CN100384638C - Printing unit with paper cutting device and printer with the printing unit - Google Patents

Abstract

This invention clearly discloses a printing unit with a paper cutting device and a printer with the printing unit. The printing unit includes a main frame, and one of the dynamic and static blades and a printing head are respectively arranged at the upper and lower positions of the main frame. The upper bracket is set on one side, and the upper and lower positions of the upper bracket are respectively set with the dynamic and static blade and the printing rubber roller. The lower part of the main bracket is equipped with a rotating shaft, and the two ends of the upper bracket are correspondingly provided with long holes, and the two ends of the rotating shaft pass through the long holes. , the end of the rotating shaft is provided with a wrench, the wrench is provided with handles, grooves and shifting blocks, the two ends of the print head fixing plate are provided with card slots, and the mandrel of the printing rubber roller is stuck in it when the upper bracket is closed; the casing is provided with the above For the printer of the printing unit, since the static blade of the cutter slides and opens and closes horizontally with the upper bracket, even if the movable blade of the cutter is not retracted, it presses on the static blade of the cutter, and it will not affect the opening and closing of the upper bracket .

Description

Printing unit with paper cutting device and printer with the printing unit

technical field

The invention belongs to a printer and parts thereof, in particular to a printing unit with a paper cutting device and a printer with the printing unit.

Background technique

With the improvement of the automation requirements of the printing unit, more and more printing units are equipped with a paper cutting device. At present, the structure of a general printing unit with a paper cutting device is as follows: fixed on the main body bracket of the printing unit There are printing rubber roller and printing head, wherein, under the action of the elastic device, the printing head is tangent to the printing rubber roller and pressed against it; the paper cutting device is also fixed on the main body support of the printing unit, and the paper cutting port It is basically located in the direction of the tangent of the contact line between the print head and the rubber roller on the rubber roller. In this way, when the printing medium passes through the gap between the print head and the rubber roller, it is easier to enter the paper opening of the cutter. With the cooperation of the static blade and the movable blade of the cutter, the printing medium is cut off.

In the printing unit with this structure, when installing the printing medium, it is usually necessary to manually pass the printing medium into the space between the printing head and the rubber roller, and then pass it out from the paper cutting opening of the cutter. Since the printing medium is relatively soft, there are usually Certain curl, and the structure is limited, the distance from the gap between the print head and the rubber roller to the paper cutting opening is relatively large, so that the printing medium cannot be accurately inserted into the paper cutting opening of the cutter, and it is very difficult to install the printing medium. convenient.

In order to solve the above problems, a printing unit with a split cutter has appeared, its structure is shown in Figure 1 and Figure 2, in this kind of printing unit, the cutter is a split structure, the movable blade 18 and the static blade 12 are respectively arranged on both sides of the paper output channel, wherein the movable blade 18 is fixed on the printing unit support 1 through the movable blade frame 19, the stationary blade 12 and the rubber roller 13 are fixed on the upper support 11, and the upper support 11 can be rotated through the rotating shaft 17. The rotating one is fixed on the printing unit support 1. When the printing medium needs to be installed, the upper support 11 is rotated to open, and the printing medium is installed in the printing channel. Then, the upper support 11 is closed to complete the work of installing the medium. In the printing unit with this structure, the problem of the inconvenient installation of the medium in the printing unit with the integral structure of the cutter is solved, but a new problem is brought: sometimes, due to some reasons, the cutter is damaged. Moving blade 18 is not retracted, but is pressed on the static blade 12, like this, just can not open upper support 11, causes the breakdown of printing unit.

Contents of the invention

The present invention aims at the problems existing in the above-mentioned background technology, and provides a printing unit with a paper cutting device, even if the movable blade of the cutter is not retracted, it will not affect the opening and closing of the upper support.

The present invention achieves the above purpose by changing the opening and closing mode of the upper bracket. The original rotating opening and closing mode of the upper bracket is changed into a sliding opening and closing mode. It will affect the sliding of the upper bracket.

The printing unit of the present invention includes a main body support, one of the dynamic and static blades and a printing head are respectively arranged at the upper and lower positions of the main body support, and an upper support is arranged on one side of the main body support, and the other dynamic and static blades and printing rubber rollers are respectively arranged at the upper and lower positions of the upper support. The main body bracket or the upper bracket is provided with a strip-shaped hole, and correspondingly, a rotating shaft is arranged on the upper bracket or the main body bracket, so as to realize the sliding of the upper bracket on the main body bracket.

The lower part of the main body bracket is provided with a rotating shaft, and the two ends of the upper bracket are correspondingly provided with bar-shaped holes, and the two ends of the rotating shaft pass through the bar-shaped holes; the end of the rotating shaft is provided with a wrench; the wrench is provided with a handle, a groove and a shift block; the upper bracket Correspondingly set the fixed column that can be stuck in the groove; the two ends of the print head fixed plate are provided with the card groove, and the mandrel of the printing rubber roller is stuck in it when the upper bracket is closed.

At the same time, the present invention also provides a printer with the above-mentioned printing unit, which includes a casing, and the above-mentioned printing unit is arranged on the casing.

When the wrench is rotated, driven by the rotating shaft, the upper bracket can slide along the strip-shaped opening on the main body bracket of the printing unit. When the head is separated, the static blade of the cutter fixed on the upper bracket and the movable blade of the cutter fixed on the main body bracket of the printing unit are also separated; when the printing medium is installed, pull the wrench, the rotation of the wrench drives the rotation The rotating shaft drives the upper bracket to slide, the printing medium passes through the paper feeding channel, and the upper bracket is closed to complete the paper loading work; since the static blade of the cutter slides and opens and closes with the upper bracket horizontally, even the moving blade of the cutter There is no retraction, and it is pressed on the static blade of the cutter, and the opening and closing of the upper bracket will not be affected.

Description of drawings

Fig. 1 is the sectional view of the printing unit of background technology of the present invention;

Fig. 2 is a schematic diagram of the opening of the support on the printing unit of the background technology of the present invention;

Fig. 3 is the schematic diagram of printing unit of the present invention;

Fig. 4 is a schematic diagram of the printing unit in Embodiment 1 of the present invention after the upper bracket is removed;

Fig. 5 is a left sectional view of the printing unit in Embodiment 1 of the present invention without the upper bracket;

FIG. 6 is a schematic diagram of the support on the printing unit in Embodiment 1 of the present invention;

Fig. 7 is a cross-sectional view of the bracket on the printing unit in Embodiment 1 of the present invention;

Fig. 8 is a sectional view of the left wrench of the printing unit in Embodiment 1 of the present invention;

Fig. 9 is a schematic diagram of the installation structure of the left wrench in Embodiment 1;

Figure 10 is a partially enlarged view of Figure 9;

Fig. 11 is a schematic diagram of the closed state of the upper bracket in embodiment 1;

Fig. 12 is a schematic diagram of the open state of the upper bracket in Embodiment 1;

13 is a schematic diagram of a printing unit according to Embodiment 2 of the present invention;

Fig. 14 is a schematic diagram of the printing unit according to Embodiment 2 of the present invention after removing the upper bracket;

Fig. 15 is a cross-sectional view of the printing unit according to Embodiment 2 of the present invention after removing the upper bracket;

Fig. 16 is a schematic diagram of the support on the printing unit according to Embodiment 2 of the present invention;

Fig. 17 is a cross-sectional view of the bracket on the printing unit according to Embodiment 2 of the present invention;

Fig. 18 is a schematic diagram of a printing unit according to Embodiment 2 of the present invention;

FIG. 19 is a schematic diagram of the upper support of the printing unit in Embodiment 2 of the present invention after it is opened.

Detailed ways

Example 1:

Embodiment 1 of the printing unit of the present invention includes a main body support 3, as shown in Figure 4, a movable blade fixing frame 4 is arranged on one side of the main body support 3, and a movable blade 41 is arranged on it; as shown in Figure 5, a spring is fixed at the bottom Seat 36, is provided with stage clip 37 on it, stage clip 37 connects printing head fixing plate 38, print head 39 is fixed on printing head fixing plate 38, and flange 381 is arranged on the two ends of printing head fixing plate 38, and flange 381 has Sliding groove 382 .

The other side in the main body support 3 is provided with upper support 5, and its structure is as shown in Figure 7, and the corresponding movable blade fixed mount 4 positions of upper support 5 tops are provided with static blade fixed mount 57, and static blade 58 is set on it; The top of the top is also provided with a static blade guard 52; the lower part of the upper bracket 5 is provided with a printing rubber roller 56 corresponding to the position of the printing head 39, and the end of the printing rubber roller 56 is provided with a gear 53, and the gear 53 is connected with the printing drive device 31; as shown in Figure 11 As shown, there are left flange 511 and right flange 512 on both sides of upper bracket main body 51; Column 57', and has right strip hole 59.

The main body bracket 3 is provided with a rotating shaft 32, and the two ends of the rotating shaft 32 are respectively fixed with a left wrench 33 and a right wrench 34, so that the left and right wrenches can rotate with the rotation of the rotation shaft, and the rotation shaft can also rotate with the rotation of any wrench The rotating shaft 32 passes through the left bar-shaped hole 55 and the right bar-shaped hole 56 of the upper bracket 5, so that the upper bracket 5 can slide relative to the main body bracket 3 in the horizontal direction.

The structure of wrench 33 is as shown in Figure 8, and left fixing hole 331 is arranged on the left wrench 33, is used for being fixedly connected with an end of rotating shaft 32; There is also a handle 332 on one side; a left toggle block 335 is also provided on the bottom of the left protrusion 333; a right fixing hole 341 is arranged on the right wrench 34, and a right protrusion 343 is arranged on one side, and a right groove 344 is arranged on the right protrusion 343; The bottom of the bottom is also provided with a right toggle block 345.

In actual use, when the upper bracket 5 is closed, the mandrel of the printing rubber roller 56 is stuck in the sliding groove 382 of the printing head fixing plate 38, and the printing head 39 is pressed on the surface of the printing rubber roller 56; The fixed post 54 is stuck in the left groove 334 on the left spanner 33; the right fixed post 57' on the upper support 5 is stuck in the right groove 344 on the right spanner 34; The horizontal sliding of the blade 41 can cut off the printing medium; in this state, the compression spring 37 in the printing unit applies a certain pressure to the printing head 39 through the printing head fixing plate 38, so that the printing head 39 presses the printing rubber roller 56 And the pressure is applied to the upper bracket 5 through the printing rubber roller 56. Since the fixing column on the upper bracket 5 is stuck in the slot of the main body bracket 3, the upper bracket 5 is stably fixed on the main body bracket 3.

When loading paper, it is necessary to separate the upper bracket 5 from the main body bracket 3, and turn the handle 332 of the left wrench 33 clockwise according to the direction in FIG. The left wrench 33 drives the wrench rotating shaft 32 to rotate, and the wrench rotating shaft 32 drives the right wrench 34 to rotate again, and the right fixed column 57 ' on the upper bracket 5 breaks away from the right groove 344 of the right wrench 34; under the promotion of the stage clip 37, the upper bracket 5. Move outward; at the same time, in the process of continuing to pull the left wrench 33, the left toggle block 335 of the left wrench 33 is toggled to the left fixed column 54, and the right toggle block 345 of the right wrench 34 is toggled to the right fixed column 57, also drives the upper bracket 5 to move outwards. In this way, the upper bracket 5 is separated from the main body bracket 3, as shown in FIG. 12 , and the paper loading operation can be conveniently performed.

When the upper support 5 needs to be closed, the upper support 5 is maintained in a horizontal direction, and the static blade guard plate 52 or other parts on the upper support 5 are promoted to move the upper support 5 horizontally. When the printing rubber roller 56 touches the print head 39, along Turn the handle 332 of the left wrench 33 counterclockwise in the direction in Fig. 9, so that the left fixed column 54 on the upper bracket 5 is stuck in the left groove 334 on the left wrench 33; the right fixed column 57 on the upper bracket 5 is stuck in the right In the right groove 344 on the wrench 34 ; thus the upper bracket 5 is tightened on the main body bracket 3 .

Because in the above-mentioned moving process of the upper bracket 5, the upper bracket 5 keeps moving in the horizontal direction, even if the movable blade 41 of the movable blade assembly 4 is pressed on the static blade 58 arranged on the upper bracket 5 because it cannot be retracted in time, The upper bracket 5 can also be opened smoothly without being affected by the movable blade 41 . Similarly, when the upper bracket 5 is closed, it can also be closed smoothly.

In the above-mentioned technical scheme, the method of setting strip-shaped holes on the upper bracket 5 and setting the rotating shaft on the main body bracket 3 is adopted to realize the sliding of the upper bracket 5 on the main body bracket 3; 5 is provided with a rotating shaft, and the main body bracket 3 is provided with a technical scheme of corresponding strip-shaped holes to realize the sliding of the upper bracket 5 on the main body bracket 3. The two schemes can achieve the same technical effect.

In the above technical solution, the difference between the left wrench 33 and the right wrench 34 is that the left wrench 33 has a handle 332 , and the right wrench 34 can also be provided with a handle with the same function.

In the above-mentioned technical scheme, the movable blade fixed mount 4 is fixed on the main body support 3, and the static blade fixed mount 57 is fixed on the upper support 5. Similarly, the static blade fixed mount 57 can also be fixed on the main body support 3, and the movable blade fixed mount 57 can be fixed on the main body support 3. The fixed frame 4 is fixed on the upper bracket 5, which can also achieve the same technical effect.

Example 2:

FIG. 13 is a schematic diagram of the printing unit according to Embodiment 2 of the present invention, and FIG. 14 is a schematic diagram of the printing unit of the present invention without the upper bracket. The upper part of the main body support 3 of the printing unit is respectively provided with a movable blade fixing frame 4 and an upper support 5; one side of the main body support 3 is provided with a power mechanism 31; Connecting rod 331, the left rotating shaft 32 is fixed on the left connecting rod 33, and the right rotating shaft 321 is fixed on the right connecting rod 331; The both sides of main body bracket 3 are also provided with slots 35 and 351; The two sides of main body bracket 3 are also arranged symmetrically There is a left opening 44 and a right opening 45 .

Fig. 15 is a cross-sectional view of the printing unit of the present invention without the upper support. The middle part of the main body bracket 3 is provided with an elastic member fixing seat 36, on which an elastic member 37 is arranged, and the elastic member 37 is pressed against the print head fixing plate 38 on which the print head 39 is fixed; the two sides of the print head fixing plate 38 have Flange 381, groove 382 is arranged on flange 381; Moving blade 41 is arranged in moving blade holder 4, and moving blade 41 can move left and right in the direction as shown in Figure 15.

FIG. 16 is a schematic diagram of the support on the printing unit of the present invention, and FIG. 17 is a cross-sectional view of the support on the printing unit of the present invention. There are left flange 511 and right flange 512 on both sides of the upper bracket main body 51; left strip hole 55 is opened on the left flange 511; There is a right strip hole 59 on the top, and a right locking hook 61 is rotatably fixed by the locking shaft 52, wherein the left locking hook 60 and the right locking hook 61 are integrated with the locking shaft 52 and can rotate together; The lock hook 60 and the right lock hook 61 are arranged symmetrically with respect to the upper bracket main body 51. The left lock hook 60 has a left slide groove 601 and a left flange 602 (not shown in the figure); the right lock hook 61 has a right slide Groove 611, and right flange 612 is arranged; The rubber roller 56 that can also be rotatably hinged on the upper bracket main body 51 is fixed with the gear 53 on the rubber roller 56; Static blade 58 is arranged.

Fig. 18 is a perspective view of the printing unit of the present invention, and Fig. 19 is a perspective view of the upper support of the printing unit of the present invention after opening. In Fig. 18 , after the upper bracket pivot 46 passes through the left opening 44 and the right opening 45 on the main body bracket 3, it passes through the left elongated hole 55 and the right elongated hole 59 on the upper bracket main body 51, and the The main body bracket 3 and the upper bracket 5 are connected; at this time, the mandrel of the rubber roller 56 is stuck in the slot 382 of the print head fixing plate 38, and the bracket 5 is in a locked state; the left shaft 32 on the left connecting rod 33 is worn on the In the left sliding groove 601 of the left locking hook 60, the right rotating shaft 321 on the right connecting rod 331 passes in the right sliding groove 611 of the right locking hook 61, and the extension line of the left connecting rod 33 passes through the upper bracket main body 3 and the left The hinge point of the locking hook 60 and the upper end of the left connecting rod 33 are located at the highest limit position of the left sliding groove 601; The highest limit position of the right sliding groove 611; the upper bracket main body 51, the left locking hook 60, and the left connecting rod 33 form a connecting rod system, and similarly, the upper bracket main body 51, the right locking hook 61, and the right connecting rod 331 also form a connecting rod System, these two connecting rod systems are left and right symmetrical, and act synchronously;

In this printing unit, since the rubber roller 56 in the upper bracket 5 is in contact with the fixed printing head 39 in the main body bracket 3, the force that the elastic member 37 exerts on the printing head 39 is also partially transmitted to the upper bracket 5, the force F The direction in Fig. 18 is horizontal to the right; the force F can be decomposed into two forces on the upper bracket 5, one is the vertical upward force F1, and the other is along the hinge axis of the left locking hook 60 and the upper bracket main body 51, the left The force F2 in the hinge axis direction of the rotating shaft 32, the left connecting rod 33 and the main body bracket 3, the upper bracket support shaft 46 offsets the force F1, and the force F2 passes through the left lock hook 60 and the hinge shaft 71 of the upper bracket main body 51, the left connecting rod 33 The hinge shaft 72 and the left rotation shaft 32 of the main body bracket 3 are directly transmitted to the main body bracket 3, and at this moment, the upper bracket 5 is in a relatively stable state.

When loading paper, it is necessary to separate the upper bracket 5 from the main body bracket 3, and pull the left locking hook 60 and the right locking hook 61 clockwise according to the direction shown in Figure 18. The hinge axis 71 of the upper bracket main body 51, the left rotating shaft 32, the left connecting rod 33 and the hinge axis 72 of the main body support 3 are not on the same straight line, and the right locking hook 61 and the hinge axis 73 and the right rotating shaft of the upper bracket main body 51 are not on the same straight line. 321. The right connecting rod 331 and the hinge shaft 74 (not shown in the figure) of the main body bracket 3 are not on the same straight line, which destroys the force balance of the original locked state. When the print head 39 is applied to the upper bracket 5 Driven by the force F, the upper bracket 5 is separated from the main body bracket 3, as shown in FIG. 19 .

When the upper bracket 5 needs to be closed, keep the upper bracket 5 in a horizontal direction, push the upper bracket 5, and move the upper bracket 5 horizontally. When the rubber roller 56 touches the print head 39, the extension line of the left connecting rod 33 passes through the main body of the upper bracket 3 and the hinge point of the left locking hook 60 and the upper end of the left connecting rod 33 is located at the highest limit position of the left slide groove 601; the extension line of the right connecting rod 331 passes through the hinge point of the upper bracket main body 3 and the right locking hook 61 and the right connecting rod The upper end of 331 is located at the highest limit position of the right sliding groove 611; the force balance has been reached, the upper bracket 5 is in a stable state, and the upper bracket 5 is locked on the main body bracket 3 .

Because in the above-mentioned moving process of the upper bracket 5, the upper bracket 5 keeps moving in the horizontal direction, even if the movable blade 41 of the movable blade fixed mount 4 is pressed on the static blade 58 arranged on the upper bracket 5 because it cannot be retracted in time. , the upper bracket 5 can also be opened smoothly without being affected by the movable blade 41. Similarly, when the upper bracket 5 is closed, it can also be closed smoothly.

In the above-mentioned technical scheme, the method of setting strip holes on the upper bracket 5 and setting the shaft on the main body bracket 3 is adopted to realize the sliding of the upper bracket 5 on the main body bracket 3. A shaft is arranged on the top, and a corresponding strip-shaped hole is arranged on the main body bracket 3 to realize the sliding of the upper bracket 5 on the main body bracket 3. The two solutions can achieve the same technical effect.

In the above-mentioned technical solution, the left lock hook 60 and the right lock hook 61 are respectively provided at the two ends of the upper bracket 5, and similarly, only one lock hook at one end of the upper bracket can be used to realize the above-mentioned technical effect.

In the above-mentioned technical scheme, the movable blade fixed mount 4 is fixed on the main body support 3, and the static blade 58 is fixed on the upper support 5. Similarly, the static blade can also be fixed on the main body support 3, and the movable blade fixed mount 4 is fixed on the On the upper bracket 5, the same technical effect can also be achieved.

The specific examples of the present invention disclose its preferred implementation, but are not limited to this implementation. Those skilled in the art can easily comprehend the spirit of the present invention based on the above-mentioned embodiments, and make various extensions and changes. But as long as it does not deviate from the spirit of the present invention, all within the protection scope of this patent.

Claims (7)

1. print unit, it comprises main body rack, the upper-lower position of main body rack is provided with one of sound blade and printhead respectively, in main body rack one side upper bracket is set, the upper-lower position of upper bracket correspondence respectively is provided with one of sound blade and prints rubber roll, it is characterized in that on main body rack or upper bracket, bar hole being set, on corresponding upper bracket or the main body rack rotating shaft is set, thereby realize the slip of upper bracket on main body rack.

2. print unit according to claim 1 is characterized in that the main body rack bottom is provided with rotating shaft, and the upper bracket two ends correspondingly are provided with bar hole, and rotating shaft terminal passes bar hole.

3. print unit according to claim 2 is characterized in that the end of rotating shaft is provided with spanner.

4. print unit according to claim 3 is characterized in that spanner is provided with handle, groove and shifting block; The fixed leg that may be stuck in the groove correspondingly is set on the upper bracket.

5. print unit according to claim 4 is characterized in that printhead fixed head two ends are provided with draw-in groove, and the mandrel of printing rubber roll when upper bracket is closed is stuck in wherein.

6. print unit according to claim 2, it is characterized in that hinged latch hook on the upper bracket main body, sliding tray is set on the latch hook, main body rack and connecting rod lower end are hinged, small end can slide along the sliding tray of latch hook, when upper bracket was in closed condition, the extended line of connecting rod passed the latch hook pin joint of upper bracket main body and the high limit position that small end is positioned at sliding tray; The flange on latch hook top is pressed in the upper surface of upper bracket main body.

7. printer that has claim 1 to any described print unit of claim of claim 6.

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