WO2025127589A1 - Welding machine for synthetic resin - Google Patents

Abstract

The present invention relates to a welding machine for a synthetic resin and, more specifically, to a welding machine for a synthetic resin, the machine: having, at an upper portion, an ultrasonic generator lifted/lowered by means of a lifting stand, and having, at a lower portion, a welding roller formed at the upper end of a vertical guide pipe vertically stood up from the lower portion of a main body, such that, when a curved raw fabric is held around the welding roller, the workability of the curved fabric is improved since the fabric is held and provided without interference with a worktable or the like; and also having a friction roller formed at the side surface of an ultrasonic horn so that during entry and discharge of the raw fabric, the raw fabric can smoothly enter and be discharged between the ultrasonic horn and the welding roller, which are made of a metal material, without slipping and a uniform welding operation can be performed.

Description

Welder for synthetic resins

The present invention relates to a synthetic resin welding machine, and more specifically, to a synthetic resin welding machine that enables welding using hot air and ultrasonic vibration energy, while allowing smooth entry and exit of fabric between an upper ultrasonic horn made of metal and a lower welding roller, and in particular, facilitating work with high-quality, folded fabric.

Recently, as leisure and hobby activities have become more active, various functional clothing, coverings, tents, etc. are being widely used.

Fabrics for various types of clothing, etc., are usually required to have a basic waterproof function, and are produced using waterproof fabrics that have a waterproof function.

Accordingly, fabrics that require waterproofing, such as functional clothing, clothing, tents, and so on, are manufactured using the above-mentioned waterproof fabrics so that they faithfully perform their original function while also allowing protection against rainy weather due to their waterproof function.

Accordingly, the waterproof fabrics as described above can secure their waterproof properties by joining them together through welding, and among the welding methods, the heat welding method is mainly used.

Meanwhile, hot air, ultrasonic, high-frequency, rotation, and vibration welding methods are being applied as thermal welding methods.

Among these, hot air welding is mainly used to bond waterproof tape to the sewing part of fabric. High temperature hot air is applied to the waterproof tape to melt it to a predetermined degree, and at the same time, the waterproof tape is bonded to the sewing part of the fabric and passed between upper and lower rollers made of rubber.

However, the hot air welding method described above is one in which high-temperature hot air is discharged over a relatively large area, and although it was possible to melt and bond relatively thin waterproof tapes, there was a serious problem in that, when thick fabrics such as tents were overlapped and bonded, the waterproof coating surface around the bonding surface of the fabrics burned and peeled off due to excessive hot air.

In particular, in the past, general PE, PVC coating materials were used for waterproofing tents, etc., but recently, polymer coatings made of environmentally friendly materials are being applied to prevent environmental pollution. However, in the case of the hot air mentioned above, if weak hot air is applied, the decomposition power of the polymer decreases, preventing proper bonding, and if excessive hot air is applied, there was a problem that the coating surface burned.

Accordingly, in order to solve the above problems, an ultrasonic welding method is applied in which ultrasonic vibration energy is transmitted to the welding material through an ultrasonic horn, causing a momentary frictional heat to be generated at the joint surface of the welding material between the upper welding roller and the welding material, thereby melting and bonding the synthetic resin to form a strong molecular bond.

However, the conventional welding method using a welding roller and an ultrasonic horn as described above has a problem in that the welding wheel and the ultrasonic horn are both made of metal, and when a strong fabric enters, the frictional force is reduced, causing the fabric to slip, making it difficult to properly enter and discharge the fabric, and this has caused a serious problem in that uniform welding work cannot be performed.

In addition, conventional synthetic resin welding machines have welding rollers or ultrasonic horns mounted on a work table and configured to protrude to a predetermined degree, which has the problem of making welding difficult in the case of rigid, foldable fabrics.

[Patent Document]

(Patent Document 1) Republic of Korea Registered Patent No. 10-2088557.

(Patent Document 2) Republic of Korea Registered Patent No. 10-2405061.

The present invention has been created to solve the above-described problems, and the purpose of the present invention is to provide a synthetic resin welding machine in which an ultrasonic generator that operates to rise and fall by means of a platform is formed at the upper portion, and a welding roller is formed at the upper portion of a vertical guide pipe that is vertically installed from the lower portion of the main body at the lower portion, thereby improving the workability of the curved fabric by installing it on the welding roller without interference with a worktable, etc., when the curved fabric is placed on the welding roller.

In addition, the purpose of the present invention is to provide a synthetic resin welding machine that enables smooth entry and discharge and uniform welding operation without slipping of the fabric between the ultrasonic horn and welding roller made of metal during the entry and discharge process of the fabric by forming a friction roller on the side of the ultrasonic horn.

As a specific means for achieving the above purpose, a main body is formed with a base plate that protrudes horizontally and is supported on the ground at the bottom, a support arm that protrudes toward the upper side of the base plate and is hollow inside and open to one side, and a platform that is supported on the inside of the support arm and moves up and down and has an end that protrudes toward one side of the support arm;

A heater rod formed at a protruding position of the above elevator and raised and lowered together with the elevator, and having a hot air nozzle formed at the bottom that discharges hot air onto the supplied fabric;

An ultrasonic generator, which is installed on the front of the elevator and has a lifting operation and vertical rotational force together with the elevator, and is composed of a horizontally arranged vibrator, a booster, an ultrasonic horn having vertical rotational force, and a housing, which generates ultrasonic vibration energy;

A rotary driving means formed on the above-mentioned elevator, comprising a driving motor and a rotary shaft, the rotary shaft being connected to a belt pulley of the above-mentioned ultrasonic generator to provide rotary force to the ultrasonic generator;

An upper guide means formed on the above support arm and guiding the entry of the upper fabric to be welded;

A welding roller rotation guide part comprising a vertical support vertically installed upward from the above base plate, a vertical guide tube in the form of a hollow tube having a metal welding roller installed at the upper end in a position opposite to the ultrasonic horn and extending vertically from one side of the vertical support, and a horizontal guide tube in the form of a hollow tube connected to the main body at the lower end of the vertical guide tube;

A roller driving means formed on the inside of the above welding roller rotation guide part and providing rotational force to the above welding roller;

A lower guide means formed at the top of the vertical guide tube and guiding the entry of the lower fabric to be welded; and

It is configured to include a fabric friction means that forms and rotates on the above-mentioned elevator and provides rotational friction with the welding roller when the ultrasonic horn descends to prevent the entry and exit of the fabric.

The above fabric friction means is,

An installation bracket formed on the above-mentioned elevator and protruding rearward, with an axial portion formed at the bottom;

A cylinder having a vertical mounting bracket above and a cylinder rod that extends downwards;

A pivot member whose middle part is hinged to the above-mentioned axial part and protrudes forward and rearward from the platform, and to which the cylinder rod is connected and which rotates by the operation of the cylinder;

A pair of roller mounting bars on both sides protruding from the front sides of the above-mentioned rotary table to the lower sides of the above-mentioned ultrasonic horn;

A friction roller made of rubber and mounted on each end of the roller mounting bar and rotating; and

This can be achieved by including a stroke adjustment bolt that is vertically screwed to the front of the above-mentioned installation bracket and is supported on the upper part of the rotation table when the rotation table is operated to adjust the rotation angle.

As described above, the synthetic resin welding machine of the present invention has sufficient space formed at the bottom through the vertical arm mounting structure of the welding roller, so that even in the case of a folded fabric that protrudes upward, it is possible to obtain a very convenient welding effect.

In addition, a friction roller that protrudes downward from one side of the ultrasonic horn is formed on one side of the elevator, which provides rotational frictional force to the fabric entering and exiting during the welding process, enabling smooth entry and exit, and thereby maintaining the exit speed, thereby achieving the effect of enabling uniform welding.

Figure 1 is a perspective view of a synthetic resin welding machine of the present invention.

Figure 2 is a perspective view showing the inside of a synthetic resin welding machine of the present invention.

Figure 3 is a rear perspective view showing the inside of the synthetic resin welding machine of the present invention.

Figure 4 is a side view showing the inside of the synthetic resin welding machine of the present invention.

Figure 5 is a schematic diagram of the ultrasonic generator and rotation driving means of the synthetic resin welding machine of the present invention.

Figure 6 is a main part diagram of a guide means of a synthetic resin welding machine of the present invention.

Figure 7 is a diagram showing the main parts of the roller driving means of the synthetic resin welding machine of the present invention.

Figure 8 is a main part diagram of the fabric friction means of the synthetic resin welding machine of the present invention.

Figure 9 is a main part diagram of the cooling section of the synthetic resin welding machine of the present invention.

Figure 10 is a diagram showing the state of the raw material entering the synthetic resin welding machine of the present invention.

Figure 11 is a diagram showing the state of fabric welding and discharge of the synthetic resin welding machine of the present invention.

[Explanation of symbols]

100 : Body 110 : Base plate

120 : Support arm 130 : Lift

140: Lifting stroke control means

200: Heater rod 210: Hot air nozzle

300 : Ultrasonic generator 310 : Vibrator

320 : Booster 330 : Ultrasonic Horn

340 : Housing

400: Rotating drive means 410: Driving motor

420: Rotating shaft 421: Belt pulley

500: Upper guide means 510: Upper mounting base

520: Upper support 530: Upper guide

531: Upper fabric entry groove 532: Upper adjustment block

600: Welding roller rotation guide part 610: Vertical support

620: Vertical guide tube 621: Welding roller

630: Horizontal guide tube

700: Roller drive means 710: Upper sprocket

720: Roller drive motor 730: Rotating shaft

731 : Lower sprocket 740 : Chain

800: Lower guide means 810: Lower mounting base

820: Lower support 830: Lower extension

831: Lower adjustment block 840: Lower guide

900: Fabric friction means 910: Installation bracket

920 : Cylinder 921 : Cylinder Rod

930 : Rotating Table 931 : Hinge

940: Roller mounting bar 950: Friction roller

960 : Stroke adjustment bolt

1000: Cooling section 1010: Air supply pipe

1020: Air distribution pipe 1021,1021': Air discharge hole

The terms or words used in this specification and claims should not be interpreted as limited to their usual or dictionary meanings, but should be interpreted as having meanings and concepts that conform to the technical idea of the present invention, based on the principle that the inventor can appropriately define the concept of the term in order to explain his or her own invention in the best manner.

Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

Fig. 1 is a perspective view of a synthetic resin welder of the present invention, Fig. 2 is a perspective view showing the inside of the synthetic resin welder of the present invention, Fig. 3 is a rear perspective view showing the inside of the synthetic resin welder of the present invention, and Fig. 4 is a side view showing the inside of the synthetic resin welder of the present invention.

As illustrated in FIGS. 1 to 4, the synthetic resin welding machine (1) of the present invention is composed of a main body (100), a heater rod (200), an ultrasonic generator (300), a rotation driving means (400), an upper guide means (500), a welding roller rotation guide part (600), a roller driving means (700), a lower guide means (800), and a fabric friction means (900).

First, the main body (100) is configured to form the basis for configuring the synthetic resin welding machine (1) of the present invention, and various systems are constructed and configured to form a vertical body shape.

In addition, the main body (100) is configured with a base plate (110), and the base plate (110) protrudes horizontally to one side from the lower portion of the main body (100), and is configured with a foot switch (not shown in the drawing) for driving a synthetic resin welding machine (1).

In addition, the main body (100) is configured with a support arm (120) that protrudes horizontally in a spaced state from the upper portion of the base plate (110). The support arm (120) is configured to have a hollow interior and a body shape that is open to one side and the bottom, and a typical operation panel, etc. are constructed.

In addition, the main body (100) is configured with a platform (130), and the platform (130) is configured to operate up and down along a normal cylinder (not shown in the drawing) and an LM guide (not shown in the drawing) inside the support arm (120), and its end is configured to protrude toward the open support arm (120).

Meanwhile, in the present invention, the elevator (130) can be configured to allow for the control of the elevation stroke distance through an elevation stroke control means (140), similar to the elevation stroke control of a conventional hot air welder. At this time, the stroke control means (140) is not limited, and although not shown in the drawing, it may be possible to control the elevation by operating a screw lever mounted on a conventional support arm (120).

The above heater rod (200) is configured to apply hot air to the fabric during welding work when forming the synthetic resin welding machine (1) of the present invention.

At this time, the heater rod (200) in the present invention is not newly implemented, but a conventional heater rod (200) is formed with a hot air nozzle (210) to enable hot air to be discharged at the bottom, and the lower part is rotated left and right by a separate rotation means (not shown in the drawing), so that the hot air nozzle (210) advances between the ultrasonic horn (330) and the welding roller (621) described later and discharges hot air to the fabric to be welded.

The above ultrasonic generator (300) is configured to generate ultrasonic vibration energy for providing frictional heat when configuring the synthetic resin welding machine (1) of the present invention.

To this end, in the present invention, the ultrasonic generator (300) is formed horizontally with a conventional vibrator (310) and a booster (320), and an ultrasonic horn (330) in the form of a circular plate having a thickness corresponding to the welding area is formed vertically at the end of the booster (320).

At this time, in the present invention, with reference to FIG. 5, the ultrasonic generator (300) is formed on the elevator (130), and is configured to have a vertical rotational force by being mounted on the elevator (130) through a housing (340) that surrounds the vibrator (310) and booster (320) on the inside of the support arm (120) and an ultrasonic horn (330) exposed to the end of the support arm (120) by a bearing (not shown in the drawing).

The above-mentioned rotary driving means (400) is configured to control the vertical rotational force of the ultrasonic generator (300) in configuring the synthetic resin welding machine (1) of the present invention, and is mounted on the elevator (130) inside the support arm (120).

To this end, the rotary driving means (400) is configured with a driving motor (410) first, referring to FIG. 5, and the driving motor (410) is configured to be mounted parallel to the ultrasonic generator (300) in front of the elevator (130).

In addition, the rotary drive means (400) is configured with a rotary shaft (420), and the rotary shaft (420) is connected to the driving motor (410) to have rotary force, and is configured to be installed on the elevator platform (130).

At this time, the rotation drive means (400) has a rotation shaft (420) connected to the housing (340) of the ultrasonic generator (300) by a belt pulley (421), so that when the rotation shaft (420) rotates, the ultrasonic generator (300) can be rotated in the vertical direction.

The upper guide means (500) above is configured to guide the entry of the upper fabric to be welded when forming the synthetic resin welding machine (1) of the present invention.

To this end, the upper guide means (500) is configured with an upper mounting member (510) first, referring to FIG. 6, and the upper mounting member (510) is configured to be fixed to the front of the support arm (120).

In addition, the upper guide means (500) is configured with an upper support member (520), and the upper support member (520) is vertically penetrated into the upper mounting member (510) and fixed with a bolt (B) so that the height can be adjusted up and down, and is configured to form a bent bar shape in which the lower part is bent horizontally toward the ultrasonic horn (330).

In addition, the upper guide means (500) is configured with an upper guider (530) that substantially guides the entry of the upper fabric, and the upper guider (530) is configured with an upper adjustment block (532) through which the upper support member (520) passes through the upper portion, and is configured to be adjusted left and right and fixed with a bolt (B), and an upper fabric entry groove (531) that is opened forward, backward, and to one side is configured.

The above welding roller rotation guide part (600) is configured to be equipped with a welding roller (621) that reacts with the ultrasonic horn (330) to pressurize the fabric when forming the synthetic resin welding machine (1) of the present invention.

To this end, the welding roller rotation guide part (600) is first configured with a vertical support (610) that is installed vertically upward from the base plate (110).

In addition, the welding roller rotation guide part (600) is configured with a vertical guide tube (620) having a hollow interior that is formed on one side of the vertical support (610) and extends upward, and the upper end of the vertical guide tube (620) protrudes below the ultrasonic horn (330), and a welding roller (621) made of a metal material that opposes the ultrasonic horn (330) is configured axially at the upper end thereof.

In addition, the welding roller rotation guide part (600) is configured with a horizontal guide tube (630) having a hollow interior that is horizontally connected to the main body (100) at the bottom of the vertical guide tube (620).

The above roller driving means (700) is configured to control the rotation of the welding roller (621) in configuring the synthetic resin welding machine (1) of the present invention.

To this end, referring to Fig. 7, the roller driving means (700) is first configured with an upper sprocket (710) formed on one side of the welding roller (621) installed on the vertical guide pipe (620).

In addition, the roller driving means (700) is configured with a roller driving motor (720) that is formed horizontally on the inner lower part of the main body (100).

In addition, the roller driving means (700) is configured with a rotary shaft (730) that protrudes from the roller driving motor (720) and rotates by driving the roller driving motor (720). The rotary shaft (730) is configured to protrude and be received inside the horizontal guide tube (630) and be installed in the horizontal guide tube (630).

And the rotary shaft (730) has its end positioned at the lower inner side of the vertical guide tube (620), and a lower sprocket (731) that opposes the upper sprocket (710) is formed at the end positioned thereat.

Additionally, the roller driving means (700) is configured with a chain (740) connecting the upper sprocket (710) and the lower sprocket (731).

Accordingly, the roller driving means (700) is configured such that when the roller driving motor (720) is driven, the rotation shaft (730) rotates and the rotational power thereof is transmitted to the welding roller (621) through the chain (740), thereby enabling the rotation of the welding roller (621). At this time, it is preferable to configure the rotational direction to have the opposite rotational power to that of the ultrasonic horn (330).

The above lower guide means (800) is configured to guide the entry of the lower fabric to be welded when forming the synthetic resin welding machine (1) of the present invention.

To this end, the lower guide means (800) is configured with a lower mounting member (810) first, referring to FIG. 6, and the lower mounting member (810) is configured on the upper portion of the vertical guide tube (620).

In addition, the lower guide means (800) is configured with a lower support member (820), and the lower support member (820) is configured to penetrate horizontally into the lower mounting member (810) and be bolted (B) so as to enable left-right movement control.

In addition, the lower guide means (800) is configured with a lower extension member (830), and the lower extension member (830) is configured to vertically penetrate the lower adjustment block (831) formed at the end of the lower support member (820) and is fixed with a bolt (B), and is configured to have a bent rod shape with the upper end bent toward the ultrasonic horn (330), and is configured to be able to adjust the height up and down.

In addition, the lower guide means (800) is configured with a lower guide (840) through which the lower extension (830) is penetrated and fixed with a bolt so as to be adjustable left and right, and the lower guide (840) is configured with a lower end entry groove (841) that is opened forward, backward, and to the other side in opposition to the upper end entry groove (531) of the upper guide (530).

Meanwhile, in the present invention, the upper guide (530) and the lower guide (840) through which the upper and lower fabrics enter, respectively, of the upper guide means (500) and the lower guide means (800) formed as described above are formed with a predetermined vertical separation, but are configured to form a vertically overlapping shape.

Accordingly, the upper guide means (500) and lower guide means (800) are configured such that the upper and lower fabrics to be welded are guided into each other, but the welding surfaces are positioned in positions where they overlap each other.

The above-mentioned fabric friction means (900) provides frictional force to the fabric during the fabric welding process in configuring the synthetic resin welding machine (1) of the present invention, thereby facilitating the entry and exit of the fabric for the welding process.

To this end, the fabric friction means (900) is first configured with an installation bracket (910) with reference to FIG. 8. The installation bracket (910) is formed on the lower rear surface of the elevator (130) and configured such that the upper portion protrudes rearward, and an axial portion (911) is configured on the lower portion.

In addition, the fabric friction means (900) is configured with a cylinder (920) that controls the rotation of the rotary table (930) described later, and the cylinder (920) is configured to be vertically mounted on the installation bracket (910) and to have a cylinder rod (921) extend and retract downward.

In addition, the fabric friction means (900) is configured with a rotating member (930), and the rotating member (930) is formed so that its middle part is mounted on the axial member (911) of the installation bracket (910) and protrudes forward and backward, and the lower end of the cylinder rod (921) is connected to the front upper part thereof so that it rotates up and down by the operation of the cylinder (920).

In addition, the fabric friction means (900) is configured with a pair of roller mounting bars (940) on both sides, and the roller mounting bars (940) are formed on both sides in front of the rotating table (930) and configured to protrude forward, that is, on both sides in the lower part of the ultrasonic horn (330).

In addition, the fabric friction means (900) is configured with a friction roller (950) that is mounted on the tip of each roller mounting bar (940). The friction roller (950) is configured with a rubber material and rotates by friction with the fabric when the fabric enters.

In addition, the fabric friction means (900) is configured with a stroke adjustment bolt (960) that is vertically screwed to the installation bracket (910), and the stroke adjustment bolt (960) is configured to support the lower end of the rotational base (930) at the upper rear end when the friction roller (950) rotates downwards, thereby limiting the rotation angle of the rotational base (930), that is, adjusting the lower rotational degree of the friction roller (950).

In addition, the synthetic resin welding machine (1) of the present invention may further include a cooling unit (1000) that cools the ultrasonic horn (330) of the ultrasonic generator (300).

At this time, the cooling unit (1000) is configured with an air supply pipe (1010) that can supply air to the synthetic resin welding machine (1) of the present invention, referring to FIG. 9. The air supply pipe (1010) is formed at the front lower portion of the elevator (130) and configured to operate in an upward and downward manner together with the ultrasonic generator (300).

Meanwhile, the air supplied to the air supply pipe (1010) in the present invention may be supplied through a conventional air supply device (not shown in the drawing) such as a compressor that is separately provided with the synthetic resin welding machine (1) of the present invention, although not shown in the drawing.

In addition, the cooling unit (1000) is configured with an air distribution pipe (1020) capable of dispersing air supplied through the air supply pipe (1010). The air distribution pipe (1020) is configured to extend vertically from an end of the air supply pipe (1010) in an “L” shape, and is configured to be spaced apart from one side of the ultrasonic horn (330).

In addition, a plurality of air discharge holes (1021)(1021') are configured in the air distribution pipe (1020) to enable air discharge, and air is discharged to the side of the ultrasonic horn (330) to cool the ultrasonic horn (330).

Hereinafter, the operation of the synthetic resin welding machine of the present invention having the above configuration will be described in detail with reference to the attached drawings.

Referring to FIGS. 1 to 9, the synthetic resin welding machine (1) of the present invention comprises an ultrasonic generator (300) that operates to ascend and descend from the upper portion, and a welding roller (621) that is vertically installed through a vertical support (610) from the lower portion, thereby preventing interference by a conventional work table, etc., when welding and joining a rigid fabric that is curved in an “ㄱ” shape, for example, and providing frictional force during the entry and exit processes of the fabric, thereby enabling smooth entry and exit and uniform welding operations.

To this end, first, the fabric to be entered for welding operation is composed of an upper fabric (10) and a lower fabric (20). At this time, the upper fabric (10) is guided into entry through an upper guide means (500), and the lower fabric (20) is guided into entry through a lower guide means (800).

This means that, with reference to Fig. 10, first, the upper fabric (10) is guided into entry through the upper guide (530), so that one side of the upper fabric (10) to be welded enters through the upper fabric entry groove (531) and one side enters the upper fabric entry groove (531).

And the lower fabric (20) is guided into place through the lower guide (840), so that one side of the lower fabric (20) to be welded enters through the lower fabric entry groove (841) and one side enters the lower fabric entry groove (841), so that the upper fabric (10) and the lower fabric (20) form a state where the vertical welding portions overlap.

At this time, in the present invention, the upper fabric (10) and the lower fabric (20) entering the upper guider (530) and the lower guider (840) as described above can be adjusted in various widths depending on the area to be welded. This can be done by sliding adjustment of the upper adjustment block (532) and the lower adjustment block (831).

Accordingly, in the present invention, as described above, the upper guide (530) and the lower guide (840) enable precise position adjustment of the upper and lower fabrics (10) (20) to be joined, while the welding roller (621) is formed spaced upward by the vertical support (610), thereby enabling smooth entry of the fabric folded in the “ㄱ” shape.

Thereafter, a welding operation for joining the upper and lower fabrics (10) (20) that are introduced as described above is performed, in which the upper and lower fabrics (10) (20) are pressurized by the ultrasonic horn (330) when the elevator (130) is lowered by the operation of the synthetic resin welding machine (1), the rotational mounting of the heater rod (200), the opposite rotation of the ultrasonic generator (300) and welding roller (621), and the operation of the fabric friction means (900) enable the upper and lower fabrics (10) (20) to be welded and discharged to the rear.

This is done by inserting the upper and lower fabrics (10)(20) in a state where they are overlapped according to the operation described above with reference to Fig. 11 between the welding roller (621) and the ultrasonic horn (330).

Accordingly, the upper and lower fabrics (10)(20) are heated by hot air discharged from the hot air nozzle (210) of the heater rod (200).

Thereafter, the upper and lower fabrics (10)(20) that are introduced are introduced between the welding roller (621) and the ultrasonic horn (330), and at the same time, they are melted and pressurized by frictional heat caused by ultrasonic vibration energy between the welding roller (621) and the ultrasonic horn (330), and the introduction and discharge are continuously performed by the opposite rotational force of the welding roller (621) and the ultrasonic horn (330).

Meanwhile, as described above, when the upper and lower fabrics (10)(20) enter and exit between the welding roller (621) and the ultrasonic horn (330), the welding roller (621) and the ultrasonic horn (330) may not enter and exit properly due to a slipping phenomenon when working with strong fabrics due to the nature of being composed of metal.

Accordingly, in the present invention, frictional force with the upper fabric (10) is applied by the fabric friction means (900), and in the fabric friction means (900), the front of the rotating table (930) and the roller mounting bar (940) is rotated downward by the operation of the cylinder (920), thereby causing the friction roller (950) to protrude downward from the ultrasonic horn (330).

At this time, the protruding friction roller (950) initially protrudes below the ultrasonic horn (330), but as the elevator (130) descends and the ultrasonic generator (300) descends together, the friction roller (950) presses against the upper part of the welding roller (621) and comes into contact with it.

Accordingly, when the upper and lower fabrics (10)(20) enter, the friction roller (950) made of rubber material presses the upper surface of the upper fabric (10) to a predetermined degree, so that frictional force is applied to the upper fabric (10), enabling stable entry and rearward discharge of the welded upper and lower fabrics (10)(20).

That is, in the present invention, when the upper and lower fabrics (10)(20) enter, the friction roller (950) applies frictional force to the upper part of the upper fabric (10) by the operation of the fabric friction means (900), so that smooth supply at a uniform speed without slipping of the fabric and uniform welding work accordingly are possible.

In addition, in the present invention, when welding and joining upper and lower fabrics (10)(20) using the ultrasonic horn (330) and welding roller (621) as described above, excessive heat may be generated in the ultrasonic horn (330) other than the welding operation due to high temperature frictional heat caused by ultrasonic vibration energy. In this case, in the present invention, predetermined cooling of the ultrasonic horn (330) is possible by the cooling unit (1000).

This means that, with reference to FIG. 9, air supplied to the air supply pipe (1010) moves and is distributed to the air distribution pipe (1020) and is discharged to the side of the ultrasonic horn (330) through the air discharge hole (1021)(1021'), thereby enabling cooling of unnecessary heat generated outside the peripheral surface of the ultrasonic horn (330) required for welding.

As described above, the synthetic resin welding machine of the present invention makes it very easy to weld a curved fabric protruding upward through the upper configuration of the ultrasonic generator, and enables stable welding work especially in the process of working with high-quality fabric.

The welding machine for synthetic resin of the present invention has a vertical arm mounting structure of the welding roller so that sufficient space is formed at the bottom, and thus welding work is very convenient even in the case of a folded fabric that protrudes upward, and a friction roller that protrudes downward on one side of an ultrasonic horn is formed on one side of a lift platform, so that rotational friction is applied to the fabric entering and exiting during the welding work process to enable smooth entry and exit, and thus uniform welding work is possible by maintaining the exit speed accordingly.

Claims (5)

A main body (100) having a base plate (110) formed at the bottom that protrudes horizontally and is supported on the ground, a support arm (120) formed at the top that protrudes toward the upper side of the base plate (110) and is hollow inside and open to one side, and a platform (130) that is supported on the inside of the support arm (120) and moves up and down and has an end that protrudes to one side of the support arm (120); A heater rod (200) formed at a protruding position of the above-mentioned elevator (130) and operated to ascend and descend together with the elevator (130), and having a hot air nozzle (210) formed at the bottom to discharge hot air onto the supplied fabric; An ultrasonic generator (300) that is installed on the front of the elevator (130) and has a lifting operation and vertical rotational force together with the elevator (130), and is composed of a horizontally arranged vibrator (310), a booster (320), an ultrasonic horn (330) having vertical rotational force, and a housing (340) to generate ultrasonic vibration energy; A rotary driving means (400) formed on the above-mentioned elevator (130) and consisting of a driving motor (410) and a rotary shaft (420), the rotary shaft (420) being connected to a belt pulley of the ultrasonic generator (300) to provide rotary force to the ultrasonic generator (300); An upper guide means (500) formed on the above support arm (120) and guiding the entry of the upper fabric to be welded; A welding roller rotation guide part (600) comprising a vertical support (610) installed vertically upward from the base plate (110), a vertical guide tube (620) in the form of a hollow tube that extends vertically from one side of the vertical support (610) and has a welding roller (621) made of metal installed at the upper end in a position opposite to the ultrasonic horn (330), and a horizontal guide tube (630) in the form of a hollow tube that is connected to the main body (100) at the lower end of the vertical guide tube (620); A roller driving means (700) formed inside the above welding roller rotation guide part (600) and providing rotational force to the above welding roller (621); A lower guide means (800) formed at the upper end of the vertical guide tube (620) and guiding the entry of the lower fabric to be welded; and It is configured to include a fabric friction means (900) that is formed and rotates on the above-mentioned elevator (130) and provides rotational frictional force to the welding roller (621) when the ultrasonic horn (330) descends to prevent the entry and exit of the fabric. The above fabric friction means (900) is An installation bracket (910) formed on the above-mentioned elevator (130) and protruding rearward, and having an axial portion (911) formed at the bottom; A cylinder (920) having a vertical mounting of the above installation bracket (910) and a cylinder rod (921) that extends and operates downward; A pivot member (930) whose middle part is hinged (931) to the above-mentioned axial member (911) and protrudes forward and rearward from the elevator (130), and to which the cylinder rod (921) is connected and rotates by the operation of the cylinder (920); A pair of roller mounting bars (940) on both sides protruding from the front sides of the above-mentioned rotary table (930) to the lower sides of the above-mentioned ultrasonic horn (330); A friction roller (950) made of rubber and mounted on the end of each roller mounting bar (940) and rotating; and A synthetic resin welding machine characterized by including a stroke adjustment bolt (960) that is vertically screw-connected to the front of the above-mentioned installation bracket (910) and is supported on the upper part of the rotation table (930) to adjust the rotation angle when the rotation table (930) is rotated. In paragraph 1, The above upper guide means (500) is An upper mounting member (510) formed in front of the above support arm (120); An upper support member (520) having an upper portion vertically penetrated and bolted to the upper mounting member (510) and a lower portion formed by a horizontal bend; and A synthetic resin welding machine characterized by comprising an upper guide (530) that is formed with an upper end entry groove (531) that is formed by penetrating and bolting to an upper adjustment block (532) at the lower portion of the upper support (520) and opening forward, backward, and to one side. In paragraph 1, The above roller driving means (700) is An upper sprocket (710) formed on the above welding roller (621); A roller driving motor (720) formed horizontally on the inner lower part of the above main body (100); A rotary shaft (730) that is protruded from the roller driving motor (720) and installed inside a horizontal guide tube (630) and rotates by the roller driving motor (720), and has a lower sprocket (731) formed at the end to oppose the upper sprocket (710); and A synthetic resin welding machine characterized by comprising a chain (740) that connects the upper sprocket (710) and the lower sprocket (731) and transmits the rotational power of the rotating shaft (730) to the welding roller (621). In paragraph 1, The above lower guide means (800) is A lower mounting base (810) formed on the upper part of the vertical guide tube (620); A lower support member (820) that is horizontally penetrated and bolted to the lower mounting member (810) and protrudes horizontally; A lower extension (830) that is fixed by penetrating and bolting to the lower adjustment block (831) on the lower support (820) and is formed by protruding upward and being bent horizontally; and A synthetic resin welding machine characterized by comprising a lower guide (840) that is bolt-mounted to the upper portion of the lower extension (830) and has a lower fabric entry groove (841) formed that opens forward, backward, and to the other side. In paragraph 1, It is configured to further include a cooling unit (1000) capable of cooling the ultrasonic horn (330) of the above ultrasonic generator (300). The above cooling unit (1000) is It is mounted on the above-mentioned elevator (130) and operates in the elevator together with the ultrasonic generator (300). An air supply pipe (1010) capable of supplying air; and A synthetic resin welding machine characterized by comprising an air distribution pipe (1020) connected to an end of the air supply pipe (1010) and spaced apart from one side of an ultrasonic horn (330), and having a plurality of air discharge holes (1021)(1021') formed therein to discharge air to one side of the ultrasonic horn (330).

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