CN219870945U

CN219870945U - IC binding process thrust test fixture for display screen COG

Info

Publication number: CN219870945U
Application number: CN202320703662.XU
Authority: CN
Inventors: 罗刚; 赵宇; 李勇; 陈小波; 凌芳; 周文凤; 谢亚闻
Original assignee: Xinli Photoelectric Renshou Co Ltd
Current assignee: Xinli Photoelectric Renshou Co Ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-10-20
Anticipated expiration: 2033-03-31

Abstract

The utility model discloses an IC binding process thrust test fixture of a display screen COG, which comprises a base; the storage platform is arranged on the surface of the base; the pushing head is arranged on the surface of the base, the moving end of the pushing head is right opposite to the IC chip on the display screen, the pushing head can prop against the IC chip and move towards one side of the IC chip.

Description

IC binding process thrust test fixture for display screen COG

Technical Field

The utility model relates to the technical field of display screens, in particular to an IC binding process thrust test fixture for a display screen COG.

Background

The display screen is a carrier for the TFT-LCD to restore various colors, the specific restored colors are defined by driving signals input into the display screen at a certain time sequence, and the principle of TFT-LCD driving is the relation between voltage and transmittance. The display under drive control is the essence of the TFT-LCD dot optical effect. The TFT display screen requires IC chip fixing at the time of assembly. The IC chip is made by placing an integrated circuit formed by a large number of microelectronic components (transistors, resistors, capacitors and the like) on a plastic substrate, and the chip can be called as an IC chip, the volume of the IC chip is very tiny, the IC chip is very wide in the market at present, such as a bank card which is commonly used by people, the IC chip is embedded in the IC chip, and the IC chip can be used for a long time without damaging the chip in daily use. The IC chip is widely used in daily life of people, which means mass production of the IC chip, and quality detection of products is required after the production process, and since the IC chip is very tiny, auxiliary tools are required for detection.

For example, patent document CN202220876099.1 discloses a detection device for a tft display driving IC chip, which is provided with a detection mechanism, so that a chip can be scanned and projected onto a control panel, and when defective products are identified by naked eyes of a worker, an alarm sounds after confirmation, and the worker is refreshed, so that the worker is prevented from being tired, defective products are allowed to flow into the good products, and thus, the work efficiency of the worker can be improved while the detection is performed.

Although the above patent detects the quality of the IC chip by setting the detecting mechanism, it aims at the appearance of the chip, but there is a limitation to the adhesion degree after binding between the IC and the glass, because the TFT liquid crystal display may be correctly placed at the position of the IC chip after COG binding, but the stability after placing the IC chip cannot be detected, because the IC chip is fixed by adhesion when placed, if the adhesion degree cannot be detected, once the service time of the IC chip is long or the surface of the IC chip is rubbed, a sliding phenomenon easily occurs, and the product quality is affected.

Disclosure of Invention

The utility model aims to provide an IC binding process thrust test fixture for a display screen COG, and aims to solve the problem that the adhesion degree between an IC and glass after binding is limited in detection in the background art.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a thrust test fixture for an IC binding process of a display screen COG, which comprises

A base;

the storage platform is arranged on the surface of the base, and can reset positions to limit display screens and ic chips with different sizes;

the pushing head is arranged on the surface of the base, the moving end of the pushing head faces against the ic chip on the display screen, and the pushing head can prop against the ic chip and move towards one side of the ic chip.

Preferably, the storage platform comprises a pair of frame bodies symmetrically arranged about a central line in the width direction of the base, a bearing plate is arranged between the two frame bodies, a clamping groove is formed in the surface of the bearing plate, and clamping column groups capable of applying force from two sides of the display screen to clamp the display screen are arranged in the clamping groove;

the bearing plate is kept away from one side of base and is equipped with the pressure that both ends are connected with two support bodies respectively decide the pole, the surface of pressing decides the pole is offered and is followed the spout, follow the spout sliding connection has the compression post, the compression post can press the surface at the display screen after pressing from both sides tight display screen in tight post group.

Preferably, the side edge of the bearing plate, which is close to the push head, does not exceed the ic chip.

Preferably, the frame body is provided with a limit groove for limiting the bearing plate, a supporting frame for supporting the bearing plate is arranged in the limit groove, a movable cavity is arranged between the supporting frame and the bearing plate, and the clamping column group is arranged in the movable cavity;

the clamping column group comprises a movable rod which is arranged parallel to the bearing plate and two ends of the movable rod are respectively fixedly connected with two inner walls of the width direction of the movable cavity, two support column plates are arranged on the side wall of the movable rod, the movable rod can guide the two support column plates to be close to or far away from each other, and a passing column passing through the clamping groove is arranged on the support column plates.

Preferably, the width of the supporting frame is equal to the width of the bearing plate, and the supporting frame and the bearing plate are combined to form a square structure.

Preferably, a lifter is arranged on the surface of one side, close to the base, of the supporting frame, and can pull all the frame bodies, and a display screen and an ic chip placed on the bearing plate are lifted;

one side surface fixed that the support is close to the base is provided with a plurality of slide fixing posts, every slide fixing post keeps away from the support one end all runs through the base to the outside.

Preferably, the lifter comprises a pushing block connected with the surface of one side of the supporting frame, which is close to the base, an adjusting surface is arranged on one side of the pushing block, which is far away from the supporting frame, a movable sliding block connected with the surface of the base in a sliding manner is arranged on one side of the pushing block, which is far away from the supporting frame, a movable surface matched with the adjusting surface is arranged on the surface of the movable sliding block, and when the movable sliding block slides along the surface of the base, the movable surface and the adjusting surface are relatively displaced and guide the pushing block to lift along the direction vertical to the base.

Preferably, the height of the slide fixing column is larger than the sum of the heights of the pushing block and the movable sliding block.

Preferably, the distance from the base to the end of the adjusting surface near the push head is smaller than the distance from the base to the end of the adjusting surface far away from the push head.

Preferably, the pushing head is provided with a pushing table on one side far away from the ic chip, a mounting chamber is arranged at a position corresponding to the pushing table in the base, a guide groove is formed in the inner side wall of the mounting chamber, a driving block is arranged in the mounting chamber and can move in the mounting chamber along the length direction parallel to the base, and a guide strut penetrating through the guide groove and fixedly connected with the pushing table is arranged on the surface of the driving block.

The utility model has the beneficial effects that: the utility model can realize the adhesion strength test operation of the IC chip by the pushing head, and particularly, the display screens with different sizes are positioned by the storage platform, then the pushing head is driven to prop against the IC chip and move towards one side of the IC chip, the pushing head which moves at the moment can apply pushing force to the IC chip, along with the increase of the pushing force, when the IC is pushed off, the magnitude of the force application value of the pushing head at the moment is recorded, the value at the moment is the IC adhesion force value, and the whole operation process is simple and convenient and can be suitable for different display screens.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic view of a carrier structure according to the present utility model.

Fig. 3 is a schematic view of a strut plate structure in the present utility model.

Fig. 4 is a schematic view of a structure of a lifting frame in the present utility model.

Fig. 5 is a schematic view of a guide groove structure in the present utility model.

Fig. 6 is a schematic view of a guide post structure in the present utility model.

Fig. 7 is a schematic diagram of a driving block structure in the present utility model.

Fig. 8 is a schematic diagram of a pushing block structure in the present utility model.

Reference numerals illustrate: 1. a base; 2. pushing heads; 3. a storage platform; 4. a frame body; 5. a carrying plate; 6. a clamping groove; 7. pressing a fixed rod; 8. following the chute; 9. a compression column; 10. a limit groove; 11. a supporting frame; 12. a movable rod; 13. a pillar plate; 14. through the column; 15. a slide fixing column; 16. a pushing block; 17. a movable slide block; 18. a propulsion station; 19. a mounting chamber; 20. a guide groove; 21. a driving block; 22. and guiding the support post.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides an IC binding process thrust test clamp for a display screen COG.

Specifically, please refer to fig. 1-8, the IC bonding process thrust test fixture of the display panel COG includes

A base 1;

the storage platform 3 is arranged on the surface of the base 1, and the storage platform 3 can reset positions to limit display screens and ic chips with different sizes;

the pushing head 2 is arranged on the surface of the base 1, the moving end of the pushing head 2 faces the ic chip on the display screen, and the pushing head 2 can prop against the ic chip and move towards one side of the ic chip.

According to the utility model, the adhesion strength testing operation of the IC chip can be realized through the pushing head 2, specifically, the display screens with different sizes are positioned through the storage platform 3, then the pushing head 2 is driven to prop against the IC chip and move towards one side of the IC chip, the pushing head 2 which moves at the moment can apply pushing force to the IC chip, along with the increase of reasoning, when an IC is pushed off, the magnitude of the force application value of the pushing head 2 at the moment is recorded, and the value at the moment is the IC adhesion strength value, so that the whole operation process is simple and convenient.

In this embodiment, the ic chip is designated at P in FIGS. 4 and 8.

In order to make the person skilled in the art better understand the solution of the present utility model, the technical solution of the embodiment of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

It should be noted that, under the condition of no conflict, the embodiments of the present utility model and the features and technical solutions in the embodiments may be combined with each other.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

Example 1

An IC binding process thrust test fixture for a display screen COG comprises

A base 1;

According to the utility model, the adhesion strength testing operation of the IC chip can be realized through the pushing head 2, specifically, the display screens with different sizes are positioned through the storage platform 3, then the pushing head 2 is driven to prop against the IC chip and move towards one side of the IC chip, the pushing head 2 which moves at the moment can apply pushing force to the IC chip, along with the increase of the pushing force, when an IC is pushed off, the magnitude of the force application value of the pushing head 2 at the moment is recorded, the value at the moment is the IC adhesion strength value, and the whole operation process is simple and convenient and can be suitable for different display screens.

In order to achieve the purpose of limiting the display screens with different sizes, it is preferable that the storage platform 3 comprises a pair of frame bodies 4 symmetrically arranged about the central line of the base 1 in the width direction, a bearing plate 5 is arranged between the two frame bodies 4, a clamping groove 6 is formed in the surface of the bearing plate 5, and a clamping column group capable of applying force from two sides of the display screen to clamp the display screen is arranged in the clamping groove 6;

one side of the bearing plate 5 far away from the base 1 is provided with a pressing and fixing rod 7, two ends of which are respectively connected with the two frame bodies 4, the surface of the pressing and fixing rod 7 is provided with a following chute 8, a pressing column 9 is connected in a sliding manner in the following chute 8, and the pressing column 9 can be pressed on the surface of the display screen after the clamping column group clamps the display screen.

If the display screens with different sizes are required to be positioned, the display screens are directly placed on the surface of the bearing plate 5, then, force is applied to clamp the display screens from two sides of the display screens through the clamping column groups in the clamping grooves 6 (the purpose of driving the display screens to the set positions can be achieved through the operation), and then, after the display screens are clamped by the clamping column groups, the pressing columns 9 are driven to be pressed on the surface of the display screens.

In this embodiment, the pressing column 9 may be an electric push rod or a screw assembly, and the pressing column 9 may slide along the following chute 8 to adjust the position of the pressing column 9 pressed on the display screen, and the pressing rod 7 may slide between the two frames 4, which may refer to fig. 1-8 herein.

The side of the carrier plate 5 near the push head 2 does not exceed the ic chip. This is provided so that the push head 2 can be pressed against the ic chip without pressing against the side of the carrier plate 5.

The frame body 4 is provided with a limit groove 10 for limiting the bearing plate 5, a supporting frame 11 for supporting the bearing plate 5 is arranged in the limit groove 10, a movable cavity is arranged between the supporting frame 11 and the bearing plate 5, and a clamping column group is arranged in the movable cavity; the clamping column group comprises a movable rod 12 which is arranged in parallel with the bearing plate 5 and two ends of which are respectively fixedly connected with two inner walls in the width direction of the movable cavity, two column plates 13 are arranged on the side wall of the movable rod 12, the movable rod 12 can guide the two column plates 13 to be close to or far away from each other, and a passing column 14 passing through the clamping groove 6 is arranged on the column plate 13.

In order to realize the location to the not unidimensional display screen, directly through drive arrangement drive movable rod 12 rotation such as motor can, afterwards pivoted movable rod 12 can drive two pillar boards 13 and be close to each other, and when pillar board 13 is close to each other, pass post 14 and also can be driven and slide along clamping groove 6 and carry out spacingly to the display screen of placing on loading board 5 surface.

In this embodiment, the movable rod 12 may be a double-ended screw rod in the prior art, that is, two screws with opposite rotation directions are formed, the set lifting frame 11 is fixedly connected with the frame body 4, so that the two support plates 13 cannot shake during sliding, and the lifting frame 11 is further provided with two sliding rods to limit the two support plates 13, so that when the two support plates 13 are close to each other, the ends of the two support plates 13 cannot have a phenomenon that one end is high and the other end is low. Referring specifically to fig. 1-5.

Example two

The width of the supporting frame 11 is equal to that of the bearing plate 5, and the supporting frame 11 and the bearing plate 5 are combined to form a square structure. This is provided to make the position of the pillar plate 13 restricted more stable.

A lifter is arranged on the surface of one side of the supporting frame 11, which is close to the base 1, and can pull all the frame bodies 4 and the display screen and the ic chip placed on the bearing plate 5 to lift; a plurality of slide fixing columns 15 are fixedly arranged on the surface of one side of the supporting frame 11 close to the base 1, and one end of each slide fixing column 15 far away from the supporting frame 11 penetrates through the base 1 to the outer side.

In order to make the ic chip face the pusher 2, the lifter is directly driven, then the lifter guides all the frames 4 and the display screen and ic chip placed on the carrying plate 5 to rise, and all the frames 4 drive the lifting frame 11 to rise together when rising, then the rising lifting frame 11 guides the sliding posts 15 to slide along the penetrating part with the base 1, so that the lifting frame 11 has high stability when rising (for example, the rising is used for illustration, and the lowering can also refer to the above description).

The lifter comprises a pushing block 16 connected with the surface of one side of the supporting frame 11, which is close to the base 1, an adjusting surface is arranged on one side of the pushing block 16, which is far away from the supporting frame 11, a movable sliding block 17 connected with the surface of the base 1 in a sliding manner is arranged on one side of the pushing block 16, which is far away from the supporting frame 11, a movable surface matched with the adjusting surface is arranged on the surface of the movable sliding block 17, and when the movable sliding block 17 slides along the surface of the base 1, the movable surface and the adjusting surface are relatively displaced and guide the pushing block 16 to lift along the direction vertical to the base 1.

In order to realize the lifting support 11, referring to fig. 8, the movable slider 17 and the pushing block 16 may be directly guided to relatively displace by a screw or an electric push rod, that is, when the movable slider 17 slides along the surface of the base 1, the movable surface and the adjusting surface relatively displace and guide the pushing block 16 to lift in a direction perpendicular to the base 1.

The height of the slide-fixing column 15 is greater than the sum of the heights of the pushing block 16 and the movable slider 17. This is provided to prevent the slide fixing column 15 from sliding out of the penetration with the base 1 when the push block 16 and the movable slider 17 are relatively displaced.

The distance from the base 1 to the end of the adjusting surface close to the push head 2 is smaller than the distance from the base 1 to the end of the adjusting surface far away from the push head 2. Referring to fig. 8, this is so arranged that the movable slider 17 moves rightward when the push block 16 is raised and the push block 16 is lowered when the movable slider 17 moves leftward.

Example III

The side of pushing head 2 away from the ic chip is equipped with advances platform 18, and the base 1 is interior to be equipped with installation room 19 with advancing platform 18 department corresponding position department, and guide slot 20 has been seted up to the inside wall of installation room 19, is equipped with in the installation room 19 and drives piece 21, drives piece 21 and can follow the length direction activity that is on a parallel with base 1 in installation room 19, drives the surface mounting of piece 21 and has the guide pillar 22 that passes guide slot 20 and advance platform 18 fixed connection.

In order to achieve the purpose of pushing the push head 2, the driving block 21 is guided to move in the installation chamber 19 along the length direction parallel to the base 1 directly through the electric push rod or the screw rod assembly, and at this time, the moving driving block 21 moves towards the push head 2 through the guiding support 22 with the pushing table 18, that is, provides a pushing force for the push head 2.

Working principle:

in a specific operation, a thrust counter can be installed on the push head 2, one end of an ic chip on the display screen is aligned to the push head 2, then, the movable rod 12 is directly driven to rotate by a driving device such as a motor, the movable rod 12 which rotates drives the two support plates 13 to be close to each other, when the support plates 13 are close to each other, the passing column 14 is also driven to slide along the clamping groove 6 so as to limit the display screen placed on the surface of the bearing plate 5, that is, the clamping column group in the clamping groove 6 applies force from two sides of the display screen to clamp the display screen (the purpose of driving the display screen to a set position can be achieved in such an operation), and then, the clamping column 9 is driven to press the surface of the display screen after the clamping column group clamps the display screen.

The driving block 21 is guided by the electric push rod or the screw assembly to move in the installation chamber 19 along the length direction parallel to the base 1, and the moving driving block 21 moves towards the pushing head 2 through the guiding support column 22 with the pushing table 18, that is, provides a pushing force to the pushing head 2.

The pushing head 2 which moves can apply pushing force to the IC chip, and along with the increase of the pushing force, the magnitude of the force application value of the pushing head 2 at the moment is recorded when the IC is pushed off, the value at the moment is the IC adhesive force value, and the whole operation process is simple and convenient and can be suitable for different display screens.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It is apparent that the above-described embodiments are only some embodiments of the present utility model, but not all embodiments, and the preferred embodiments of the present utility model are shown in the drawings, which do not limit the scope of the patent claims. This utility model may be embodied in many different forms, but rather, embodiments are provided in order to provide a thorough and complete understanding of the present disclosure. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing description, or equivalents may be substituted for elements thereof. All equivalent structures made by the content of the specification and the drawings of the utility model are directly or indirectly applied to other related technical fields, and are also within the scope of the utility model.

Claims

1. The utility model provides a IC binding technology thrust test fixture of display screen COG which characterized in that includes

A base (1);

the storage platform (3) is arranged on the surface of the base (1), and the storage platform (3) can reset positions to limit display screens and ic chips with different sizes;

the pushing head (2), the pushing head (2) is arranged on the surface of the base (1), and the motion end of the pushing head (2) is right opposite to the ic chip on the display screen, and the pushing head (2) can prop against the ic chip and move towards one side of the ic chip.

2. The IC binding process thrust test fixture for the COG of the display screen according to claim 1, wherein the storage platform (3) comprises a pair of frame bodies (4) symmetrically arranged about a central line in the width direction of the base (1), a bearing plate (5) is arranged between the two frame bodies (4), a clamping groove (6) is formed in the surface of the bearing plate (5), and clamping column groups capable of applying force from two sides of the display screen to clamp the display screen are arranged in the clamping groove (6);

one side that base (1) was kept away from to loading board (5) is equipped with presses fixed pole (7) that both ends are connected with two support body (4) respectively, follow spout (8) have been seted up to the surface of pressing fixed pole (7), follow sliding connection in spout (8) has compression post (9), compression post (9) can press at the surface of display screen after pressing from both sides tight display screen of tight post group.

3. The IC bonding process thrust test fixture for the display panel COG according to claim 2, wherein the side edge of the carrier plate (5) close to the pusher (2) does not exceed the IC chip.

4. The IC binding process thrust test fixture for the COG of the display screen according to claim 3, wherein the frame body (4) is provided with a limit groove (10) for limiting the bearing plate (5), a supporting frame (11) for supporting the bearing plate (5) is arranged in the limit groove (10), a movable cavity is arranged between the supporting frame (11) and the bearing plate (5), and the clamping column group is arranged in the movable cavity;

the clamping column group comprises movable rods (12) which are arranged in parallel with the bearing plate (5) and are fixedly connected with two inner walls of the width direction of the movable cavity at two ends respectively, two support plates (13) are arranged on the side walls of the movable rods (12), the movable rods (12) can guide the two support plates (13) to be close to or far away from each other, and penetrating columns (14) penetrating through the clamping grooves (6) are arranged on the support plates (13).

5. The IC bonding process thrust test fixture for a display panel COG according to claim 4, wherein the width of the supporting frame (11) is equal to the width of the carrier plate (5), and the supporting frame (11) and the carrier plate (5) are combined to form a square structure.

6. The IC binding process thrust test fixture for the display screen COG according to claim 4 or 5, wherein a lifter is arranged on the surface of one side of the supporting frame (11) close to the base (1), and the lifter can pull all the frame bodies (4) and the display screen and IC chip placed on the bearing plate (5) to lift;

one side surface fixed that the support frame (11) is close to base (1) is provided with a plurality of slide fixing posts (15), every slide fixing post (15) is kept away from the one end of support frame (11) and is all run through base (1) to the outside.

7. The IC bonding process thrust test fixture for a display screen COG according to claim 6, wherein the lifter comprises a pushing block (16) connected with a surface of a side, close to the base (1), of the supporting frame (11), an adjusting surface is arranged on a side, far away from the supporting frame (11), of the pushing block (16), a movable sliding block (17) connected with the surface of the base (1) in a sliding manner is arranged on a side, far away from the supporting frame (11), of the pushing block (16), a movable surface matched with the adjusting surface is arranged on the surface of the movable sliding block (17), and when the movable sliding block (17) slides along the surface of the base (1), the movable surface and the adjusting surface are relatively displaced, and the pushing block (16) is guided to lift in a direction perpendicular to the base (1).

8. The IC bonding process thrust test fixture for a display panel COG according to claim 7, wherein the height of the slide fixing column (15) is larger than the sum of the height of the pushing block (16) and the height of the movable slider (17).

9. The IC bonding process thrust test fixture for a display panel COG according to claim 1 or 2, wherein the distance from the base (1) to the end of the adjustment surface close to the pusher (2) is smaller than the distance from the base (1) to the end of the adjustment surface remote from the pusher (2).

10. The IC bonding process thrust test fixture for the display screen COG according to claim 1 or 2, wherein a pushing table (18) is arranged on one side, away from the IC chip, of the pushing head (2), an installation chamber (19) is arranged in the base (1) at a position corresponding to the pushing table (18), a guide groove (20) is formed in the inner side wall of the installation chamber (19), a driving block (21) is arranged in the installation chamber (19), the driving block (21) can move in the installation chamber (19) along the length direction parallel to the base (1), and a guide strut (22) penetrating through the guide groove (20) and fixedly connected with the pushing table (18) is arranged on the surface of the driving block (21).