CN111633966A - A kind of polyglycolic acid secondary production equipment - Google Patents

Abstract

The invention discloses polyglycolic acid secondary production equipment which comprises a material placing disc, a laser diameter measuring instrument I, a heating and stretching platform, a cooling table, a laser diameter measuring instrument II, a tensioning guide device and a material collecting disc which are sequentially connected, wherein the heating and stretching platform comprises an air heater and a heating channel, the heating channel comprises a main heating channel and side heating channels symmetrically arranged on two sides of the main heating channel, the upper end of the main heating channel is provided with a middle air hole and side air holes which are arranged on two sides of the middle air hole and are arranged in an inwards inclined manner, the main heating channel and the side heating channels are connected to an air outlet end of the air heater, the side heating channels are provided with vertical channels, and the vertical channels are provided with flow guide devices. The hot air type product stretching machine can heat a product for the second time through hot air, stretch the product through the pulling force of the hot air product, and the product is in a suspension state in the heating and stretching processes. The hot air generated by the hot air guiding device to the product is sequentially increased along the moving direction of the product, so that the uniform degree of product stretching is improved.

Description

A kind of polyglycolic acid secondary production equipment

technical field

The invention relates to a secondary production equipment of polyglycolic acid, belonging to the technical field of polyglycolic acid processing equipment.

Background technique

Polyglycolic acid (PGA) is an ideal complete biodegradable material, which can be completely degraded within 1-3 months, non-toxic and harmless, and the final degradation products are carbon dioxide and water, which have been obtained in the United States, the European Union and Japan. Biodegradable plastic material certification.

PGA is currently mainly used in high-end medical fields such as absorbable surgical sutures, and relies on imports from the United States and Japan. It has good biocompatibility, gas barrier properties, and machinability. It has been used in the gas barrier layer of food packaging and used as raw materials for degradable plastic products. It has good applications in medical, oil and gas exploration, packaging and other fields. industrialization prospects.

Polyglycolic acid is usually linear, but because polyglycolic acid is often used in absorbable surgical sutures, it has strict requirements on its outer diameter and its own tensile strength and flexibility. Secondary processing.

SUMMARY OF THE INVENTION

In order to solve the deficiencies of the prior art, the purpose of the present invention is to provide a secondary production equipment of polyglycolic acid, which solves the technical problems of low quality and low efficiency of secondary processing of polyglycolic acid in the prior art.

In order to achieve above-mentioned goal, the present invention adopts following technical scheme:

A polyglycolic acid secondary production equipment, characterized in that it includes a discharge tray, a laser caliper, a heating and stretching platform, a cooling platform, a laser caliper 2, a tensioning guide device, and a receiving tray, which are connected in sequence. The heating and stretching platform includes a hot air blower and a heating channel. The heating channel includes a main heating channel and side heating channels symmetrically arranged on both sides of the main heating channel. The inner inclined side air holes, the main heating channel and the side heating channel are both connected to the air outlet end of the hot air blower, the side heating channel is provided with a vertical channel, and the vertical channel is provided with a diversion device.

Preferably, the aforementioned secondary production equipment for polyglycolic acid is characterized in that the air guide device comprises an air guide plate with both ends hinged to the vertical channel, and the angle between the air guide plate and the heating channel is along the direction of the heating channel increase sequentially.

Preferably, the aforementioned secondary production equipment for polyglycolic acid is characterized in that the flow guiding device further includes a sliding plate and a sliding plate driving device for driving the sliding plate to slide, and the sliding plate is provided with guide grooves whose angles increase in sequence, and the rotation of the wind deflector The shaft is provided with a driving rod, the driving rod is provided with a driving shaft, the driving shaft is connected with the guide groove, and the sliding plate is slidably connected with the side heating channel.

Preferably, the aforementioned secondary production equipment for polyglycolic acid is characterized in that the sliding plate driving device comprises an ejector rod, a tension spring and a fixing seat connected to the side heating channel, and the two ends of the tension spring are respectively connected to the sliding plate and the fixing seat, The top rod is connected to the fixed seat through threads and the end is connected to the sliding plate.

Preferably, the aforementioned secondary production equipment for polyglycolic acid is characterized in that both ends of the sliding plate are connected to the side heating channel through a chute.

Preferably, the aforementioned secondary production equipment for polyglycolic acid is characterized in that an airflow recovery channel is further provided above the heating channel, and the airflow recovery channel is connected to the air inlet of the hot air blower.

Preferably, the aforementioned secondary production equipment for polyglycolic acid is characterized in that the cooling table includes a cooling fan and a cold air groove connected to the air outlet end of the cooling fan, and the cooling air groove is provided with an air outlet groove.

Preferably, the aforementioned secondary production equipment for polyglycolic acid is characterized in that the tensioning guide device comprises an articulated arm and a movable guide wheel connected to the end of the articulated arm, and the articulated arm is provided with a spring or a torsion for driving the swing of the articulated arm. reed.

Preferably, the aforementioned secondary production equipment for polyglycolic acid is characterized in that a front guide wheel is also provided between the discharge disc and the first laser caliper, and a rear guide wheel is also provided between the second laser caliper and the tensioning device. guide wheel.

Beneficial effects achieved by the present invention:

Compared with the prior art, the present invention can heat the product twice by hot air, and then stretch the product by the pulling force of the hot air product. During the above heating and stretching process, the product can be in a suspended state under the action of the hot air. Avoid contamination or extra friction on the product.

The hot air generated by the hot air guiding device of the present invention to the product increases in sequence along the moving direction of the product, which can improve the uniformity of the stretching of the product.

The invention has high processing efficiency and can realize continuous operation.

Description of drawings

Fig. 1 is the overall structure diagram of the present invention;

2 is a cross-sectional view of a heating channel of the present invention;

Fig. 3 is the partial enlarged view of A place in Fig. 2;

Fig. 4 is the plan view of the skateboard of the present invention;

Fig. 5 is the structure diagram of the cooling stage of the present invention;

Fig. 6 is a partial enlarged view at B in Fig. 5;

The meaning of the reference signs in the figure: 1- unwinding tray; 2- laser caliper 1; 3- heating and stretching platform; 4- cooling stage; 5- laser caliper 2; 6- rear guide wheel; 7- Tensioning device; 8-receiving tray; 9-guiding device; 11-front guide wheel; 31-main heating channel; 32-side heating channel; 33-air flow recovery channel; 311-middle air hole; 312-side air hole; 321 -Vertical channel; 41- Air cooler; 42- Cold air groove; 421- Air outlet groove; 71- Articulated arm; 72- Moving guide wheel; 91- Air guide plate; 92- Drive rod; Slide plate; 931-guide groove; 932-chute; 94-fixed seat; 95-top rod; 96-tension spring.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

As shown in Fig. 1 to Fig. 6 : this embodiment discloses a secondary production equipment for polyglycolic acid, including discharge trays 1 that are connected in sequence (connected sequentially in this embodiment refers to the processing and running sequence of the product). , Laser caliper 1 2, heating and stretching platform 3, cooling table 4, laser caliper 2 5, tensioning guide device 7, receiving tray 8, heating and stretching platform 3 includes hot air blower and heating channel, heating channel It includes a main heating channel 31 and side heating channels 32 symmetrically arranged on both sides of the main heating channel 31. The upper end of the main heating channel 31 is provided with a middle air hole 311 and a side air hole 312 arranged on both sides of the middle air hole 311 and inclined inwardly. The main heating channel 31 and the side heating channel 32 are both connected to the air outlet end of the hot air blower. The side heating channel 32 is provided with a vertical channel 321 , and the vertical channel 321 is provided with a flow guiding device 9 .

Specifically, the air guide device 9 includes an air guide plate 91 hinged to the vertical channel 321 at both ends, and the angle between the air guide plate 91 and the heating channel increases sequentially along the direction of the heating channel. The sequential increase here is realized by the sliding plate 93, and the sliding plate 93 is provided with guide grooves 931 whose angles increase in sequence. Referring to FIG. 4, according to the view of FIG. The direction (viewing angle of Fig. 4) increases the angle sequentially.

The rotating shaft of the wind deflector 91 is provided with a driving rod 92, the driving rod 92 is provided with a driving shaft 921, the driving shaft 921 is connected to the chute 932, and the sliding plate 93 is slidably connected to the side heating channel 32, specifically: the two ends of the sliding plate 93 The sliding groove 932 is connected to the side heating channel 32 , and the sliding groove 932 serves as a sliding guide for the sliding plate 93 .

Specifically: the sliding plate driving device includes an ejector rod 95, a tension spring 96 and a fixing seat 94 connected to the side heating channel 32. Both ends of the tension spring 96 are respectively connected to the sliding plate 93 and the fixing seat 94, and the ejector rod 95 is threadedly connected to the fixed seat 94. The seat 94 is connected to the sliding plate 93 at the end. In this way, the end of the ejector rod 95 can always bear against the sliding plate 93 .

In order to achieve heat recovery, in this embodiment, an airflow recovery channel 33 is further provided above the heating channel, and the airflow recovery channel 33 is connected to the air inlet of the hot air blower, so that a complete hot air circulation can be formed.

Referring to FIGS. 5 and 6 , the cooling table 4 of the present embodiment includes a cooling fan 41 and a cooling air slot 42 connected to the air outlet end of the cooling fan 41 . The cooling air slot 42 is provided with an air outlet slot 421 .

The tensioning guide device 7 includes a hinged arm 71 and a movable guide wheel 72 connected to the end of the hinged arm 71. The hinged arm 71 is provided with a spring or a torsion spring for driving the hinged arm 71 to swing. The tensioning guide device 7 has two functions. First, during the winding process, the moving guide wheel 72 reciprocates so that the products are wound on the receiving tray 8 in turn, but the products are always in a tensioned state by the action of the spring or torsion spring. .

A front guide wheel 11 is also provided between the discharge tray 1 and the laser caliper 1 2 of the present embodiment, and a rear guide wheel 6 is also provided between the laser caliper 2 5 and the tensioning device 7.

When working, the unwinding tray 1 is unwound, and the outer diameter of the band-shaped polyglycolic acid is measured by the laser caliper-2, and then heated by the hot air through the heating and stretching platform 3, re-melted by the pulling rope, and then cooled by the cooling platform 4. , and then re-measured by the laser caliper 2 5 , and then 3 enters the receiving tray 8 through the tensioning device 7 .

During the hot air heating process of the above heating and stretching platform 3, the product is heated by the middle air holes 311 and the side air holes 312 at the same time, and the hot air does not contact the product and the heating channel while heating, so the heating channel will not interfere with the product. . On the side of the product, the vertical channel 321 of the side also has hot air, and the guiding effect of the hot air through the deflector 9 is along the axis of the product, and the hot air has a certain stretching effect on the product. On the other hand, along the product moving direction, the inclination angle of the wind deflector 91 increases sequentially, and the change of the angle makes the stretching effect of the hot air on the product gradually increases along the product moving direction. When the stretching force needs to be adjusted, it is only necessary to rotate the ejector rod 95 to make the sliding plate 93 move in the direction of the wind deflector 91 to operate all wind deflectors 91 to rotate synchronously and the rotation angle of the downstream wind deflector 91 in the direction of product movement. It is larger than the upstream air deflector 91, so that the pulling force of the hot air on the product can be sequentially increased with the direction of the product movement, and the uniformity of the product stretching can be improved.

Compared with the prior art, in this embodiment, the product can be heated twice by hot air, and then the product can be stretched by the pulling force of the hot air product. During the above heating and stretching process, the product can be in a suspended state under the action of hot air. , to avoid contamination of the product or the impact of additional friction on the product.

In this embodiment, the hot air generated by the hot air guiding device 9 to the product increases in sequence along the moving direction of the product, which can improve the uniformity of the stretching of the product.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the technical principle of the present invention, several improvements and modifications can also be made. These improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (9)

1. A polyglycolic acid secondary production equipment, characterized in that it comprises a discharge tray (1), a laser caliper one (2), a heating and stretching platform (3), a cooling table (4), Laser caliper two (5), tensioning guide device (7), receiving tray (8), the heating and stretching platform (3) includes a hot air blower and a heating channel, and the heating channel includes a main heating channel (31) ), side heating channels (32) symmetrically arranged on both sides of the main heating channel (31), the upper end of the main heating channel (31) is provided with a middle air hole (311) and is arranged on both sides of the middle air hole (311) and faces toward the middle air hole (311). Inwardly inclined side air holes (312), the main heating channel (31) and the side heating channel (32) are both connected to the air outlet end of the hot air blower, and the side heating channel (32) is provided with a vertical channel (321) ), the vertical channel (321) is provided with a flow guiding device (9). 2 . The secondary production equipment of polyglycolic acid according to claim 1 , wherein the air guide device ( 9 ) comprises an air guide plate ( 91 ) hinged to the vertical channel ( 321 ) at both ends, 2 . The angle between the air guide plate (91) and the heating channel increases sequentially along the direction of the heating channel. 3 . The secondary production equipment of polyglycolic acid according to claim 1 , wherein the flow guiding device ( 9 ) further comprises a sliding plate ( 93 ) and a sliding plate driving device for driving the sliding plate ( 93 ) to slide. 4 . , the slide plate (93) is provided with guide grooves (931) whose angles increase in sequence, the rotating shaft of the wind deflector (91) is provided with a driving rod (92), and the driving rod (92) is provided with a driving shaft ( 921), the drive shaft (921) is connected to the guide groove (931), and the slide plate (93) is slidably connected to the side heating channel (32). 4 . The secondary production equipment of polyglycolic acid according to claim 3 , wherein the sliding plate driving device comprises an ejector rod ( 95 ), a tension spring ( 96 ) and a A fixing seat (94), the two ends of the tension spring (96) are respectively connected to the slide plate (93) and the fixing seat (94), and the top rod (95) is threadedly connected to the fixing seat (94) and the ends are connected on skateboards (93). 5 . The secondary production equipment of polyglycolic acid according to claim 3 , wherein both ends of the sliding plate ( 93 ) are connected to the side heating channel ( 32 ) through a chute ( 932 ). 6 . 6 . The secondary production equipment of polyglycolic acid according to claim 1 , wherein an airflow recovery channel ( 33 ) is further provided above the heating channel, and the airflow recovery channel ( 33 ) is connected to the heating channel. 7 . The air inlet of the fan. 7 . The secondary production equipment of polyglycolic acid according to claim 1 , wherein the cooling table ( 4 ) comprises a cooling fan ( 41 ) and a cooling air groove connected to the air outlet end of the cooling fan ( 41 ). 8 . (42), the cold air groove (42) is provided with an air outlet groove (421). 8. A polyglycolic acid secondary production equipment according to claim 1, characterized in that, the tensioning guide device (7) comprises a hinged arm (71) and a movable arm connected to the end of the hinged arm (71). A guide wheel (72), the hinge arm (71) is provided with a spring or a torsion spring for driving the hinge arm (71) to swing. 9. A polyglycolic acid secondary production equipment according to claim 1, wherein a front guide wheel (11) is also provided between the discharge tray (1) and the laser caliper one (2). A rear guide wheel (6) is also provided between the two (5) of the laser caliper and the tensioning device (7).

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