Positioning and clamping device for chip processing
By introducing the coordinated operation of positioning and clamping components into the chip processing equipment, the problem of uncertain fixture position is solved, and precise positioning and clamping of the fixture are achieved, thereby improving processing accuracy and production efficiency.
Patent Information
- Application Number
- CN202521956504.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-11
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-11
AI Technical Summary
Existing positioning and gripping devices for chip processing lack an effective positioning mechanism, resulting in uncertain fixture positions, inaccurate alignment and gripping, and easy occurrence of gaps or misalignment, affecting the continuity of the production process.
The positioning components include a stop block and a pneumatic clamping mechanism, which work in conjunction with the clamping and receiving components. Through the coordinated work of the transmission components, clamping components and receiving components, the fixture can be accurately positioned, gripped and placed. Combined with the precise movement of the motor drive and pneumatic grippers, the fixture is securely fixed in the designated position.
It enables rapid and accurate positioning and clamping of the fixture, improves the accuracy and stability of processing, reduces processing errors, shortens the production cycle, and improves production efficiency and product qualification rate.
Smart Images
Figure CN224684679U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chip processing equipment technology, and specifically to a positioning and clamping device for chip processing. Background Technology
[0002] In the field of chip manufacturing, precise positioning and non-destructive clamping of fixtures are crucial for ensuring processing quality and efficiency. Currently, positioning and clamping devices for fixture processing mostly rely on transport components to move the fixture to a designated position before subsequent operations. However, in practical use, it has been found that without an effective positioning mechanism for the fixture on the transport component, the uncertainty of the fixture's position makes it impossible to accurately align and clamp the fixture during the clamping action, easily leading to situations where the fixture is not properly clamped or misaligned. This results in the fixture not being accurately transferred to subsequent processing stations, affecting the continuity of the production process. Utility Model Content
[0003] In view of this, the purpose of this utility model is to provide a positioning and gripping device for chip processing, so as to solve the technical problems mentioned in the background art.
[0004] This utility model is achieved through the following technical solution: A positioning and gripping device for chip processing includes a worktable and further includes: A transmission component is used to transmit the fixture to be processed. A support plate is fixedly connected to one side of the tail end of the transmission component. A positioning component for positioning the fixture is fixedly installed on the top surface of the tail end of the transmission component. The positioning component includes a stop block, a pneumatic clamping mechanism and two positioning blocks. One end of the stop block is fixedly connected to the top of the support plate, and the other end extends laterally to the top surface of the tail end of the transmission component. A mounting plate is also fixedly connected to the top surface of the support plate. The mounting plate is parallel to the stop block. The pneumatic clamping mechanism is fixedly installed on the bottom surface of the mounting plate. The two positioning blocks are movably connected to the pneumatic clamping mechanism. Clamping assembly, used to clamp the fixture on the transfer component; The receiving assembly is used to store the fixture held by the clamping assembly.
[0005] The working principle of the above technical solution is as follows: the transmission component transmits the fixture to be processed to the tail end, the stop in the positioning component extends laterally to the top surface of the tail end of the transmission component, and the pneumatic clamping mechanism drives two movable positioning blocks to cooperate with the stop to position the fixture; then the clamping component clamps the positioned fixture; finally, the clamped fixture is stored in the receiving component.
[0006] Furthermore, the clamping assembly includes a support column, a fixed plate, a first guide rail, a first connecting plate, and a pneumatic gripper. One end of the fixed plate is fixedly connected to the top of the support column, and the other end extends laterally. The first guide rail is fixedly installed on one side of the fixed plate and extends along the length of the fixed plate. A first slider is fixedly connected to one side of the first connecting plate and slides on the first guide rail. The pneumatic gripper is fixedly installed on the other side of the first connecting plate. The fixed plate is also equipped with a drive assembly, which is used to drive the first connecting plate and the pneumatic gripper to slide back and forth along the first guide rail.
[0007] The working principle of the above technical solution is as follows: The first connecting plate slides against the first guide rail via a slider on one side, allowing it to move flexibly on the first guide rail. A pneumatic gripper is installed on the other side of the first connecting plate. When a fixture needs to be gripped or placed, the pneumatic gripper opens and closes via a pneumatic system. Simultaneously, the first connecting plate moves the pneumatic gripper along the first guide rail, adjusting its position to accurately grip or place the fixture at the designated location, thereby removing the fixture from the transmission component and placing it on the receiving component.
[0008] Furthermore, the drive assembly includes a motor, a transmission belt, a drive roller, and a driven roller. A support plate is fixedly mounted on the top surface of one end of the fixed plate, the motor is fixedly mounted on the support plate, a rotating rod is connected to the output shaft of the motor, the drive roller is fixedly mounted on the rotating rod, a grooved connector is fixedly connected to the other side of the fixed plate, a connecting rod is rotatably connected to the grooved connector, the driven roller is fixedly mounted on the connecting rod, the drive roller and the driven roller are connected by a transmission belt, and a driven plate is fixedly mounted on the other side of the fixed plate, the driven plate is in frictional contact with the transmission belt.
[0009] The working principle of the above technical solution is as follows: Start the motor, the motor drives the active roller to rotate, the active roller rotates the transmission belt and the driven roller to rotate at the same time, and the driven plate moves with the third transmission belt, thereby driving the first connecting plate and the pneumatic gripper connected to it to achieve precise position movement.
[0010] Furthermore, the receiving assembly includes a support block, a second guide rail, a slide plate, and multiple carriers. The support block is fixedly installed on the top surface of the workbench and extends along the length of the workbench. The second guide rail is fixedly installed on the top surface of the support block. Multiple second sliders are fixedly installed on the bottom surface of the slide plate, and the second sliders slide in cooperation with the second guide rail. Multiple carriers are fixedly installed on the top surface of the slide plate at equal intervals.
[0011] The working principle of the above technical solution is as follows: A chip placement board containing chips to be liquid soldered is placed on a carrier on the top surface of a sliding plate. Simultaneously, the sliding plate moves along a second guide rail via a second slider, aligning the carrier at the head of the sliding plate with the tail end of the transport component. Then, a pneumatic gripper in the clamping assembly clamps the fixture on the transport component and places it onto the chip placement board on the carrier, thereby fixing the chip. The sliding plate then continues to slide, transporting the chip placement board containing the chips to be liquid soldered to the processing area for processing.
[0012] Furthermore, two clamping components are fixedly installed on one side of the support block, and the two clamping components correspond to two of the carriers respectively.
[0013] The working principle of the above technical solution is as follows: Two clamping components correspond to two liquid welding mechanisms (the liquid welding mechanisms are not shown in the attached drawings of this application). When the sliding plate moves the chip placement board containing the chip to be liquid welded to the position corresponding to the liquid welding mechanism, the clamping components precisely act on the surface of the fixture. The pressure is pre-adjusted and set to firmly fix the fixture in the working position, thereby fixing the chip and preventing the chip from shifting or shaking due to external factors such as welding thermal stress and mechanical vibration during the welding process, which would affect the welding accuracy and quality.
[0014] Furthermore, the clamping assembly includes a fixing block, a cylinder, an L-plate, a second connecting plate, a connecting rod, and a pressure block. The fixing block is fixedly installed on one side of the support block, the cylinder is installed on the outside of the fixing block, the L-plate is connected to the extended end of the cylinder, one end of the second connecting plate is fixedly connected to the L-plate, and the other end extends upward. One end of the connecting rod is fixedly connected to the top of the second connecting plate, and the other end extends laterally. The pressure block is fixedly connected to the bottom surface of the end of the connecting rod away from the second connecting plate.
[0015] The working principle of the above technical solution is as follows: When the fixture needs to be clamped, the cylinder receives the start signal from the control system and begins to work. Its extended end changes from an extended state to a retracted state according to a preset stroke. Since the L-plate is tightly connected to the extended end of the first cylinder, the L-plate moves linearly under the push of the extended end. One end of the second connecting plate is fixedly connected to the L-plate. Driven by the L-plate, the second connecting plate also moves. One end of the connecting rod is fixedly connected to the top of the second connecting plate. As the second connecting plate moves, the connecting rod will also move accordingly. The other end of the connecting rod extends laterally, and the pressure block is fixedly connected to the bottom surface of the connecting rod away from the second connecting plate. Therefore, the movement of the connecting rod will drive the pressure block to move downward until the pressure block contacts the surface of the fixture and applies sufficient pressure, firmly clamping the fixture in the working position. This prevents the chip from shifting or shaking due to welding thermal stress, mechanical vibration, and other factors during the welding process, ensuring the accuracy and quality of the welding.
[0016] The beneficial effects of this utility model are as follows: 1. The positioning component, through the coordinated action of the stop block and the pneumatic clamping mechanism, can quickly and accurately position the fixture on the transmission component to the designated position and posture, providing a reliable guarantee for subsequent precise clamping and processing, effectively avoiding processing errors caused by fixture position deviation, and improving the product qualification rate.
[0017] 2. The clamping assembly adopts a drive system consisting of a motor, a conveyor belt, an active roller, and a driven roller. Combined with the sliding cooperation of the first guide rail and the first slider, it realizes the precise position movement of the pneumatic gripper, which can accurately pick up the fixture from the conveying component and place it at the designated position of the receiving component, thus improving the accuracy and stability of the operation.
[0018] 3. The components of the entire device work closely together and the workflow is seamless. From the transfer, positioning, clamping, and placement of the fixtures to the conveying, fixing, and processing, the device achieves automated operation, reduces manual intervention, greatly shortens the production cycle, improves production efficiency, and reduces production costs.
[0019] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description
[0020] Figure 1 This is a perspective view of the present invention (view 1); Figure 2 This is a perspective view of the present invention (view 2); Figure 3 This is an exploded view of the transmission component and positioning assembly of this utility model; Figure 4 This is a schematic diagram of the clamping component structure of this utility model (view 1); Figure 5 This is a schematic diagram of the clamping component structure of this utility model (view 2); Figure 6 This is a schematic diagram of the clamping component structure of this utility model.
[0021] In the diagram: 1. Workbench; 2. Transmission component; 3. Support plate; 4. Positioning assembly; 41. Stop block; 42. Pneumatic clamping mechanism; 43. Positioning block; 44. Mounting plate; 5. Clamping assembly; 51. Support column; 52. Fixing plate; 53. First guide rail; 54. First connecting plate; 55. Pneumatic gripper; 56. First slider; 57. Drive assembly; 571. Bearing plate; 572. Motor; 573. Conveyor belt; 574. Driving roller; 575. Driven roller; 576. Driven plate; 6. Receiving assembly; 61. Support block; 62. Second guide rail; 63. Slide plate; 64. Second slider; 65. Carrier; 7. Pressing assembly; 71. Fixing block; 72. Cylinder; 73. L-plate; 74. Second connecting plate; 75. Connecting rod; 76. Pressing block. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0025] In the above description of this utility model, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0026] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.
[0027] Please see Figure 1-6 This utility model provides a technical solution: a positioning and gripping device for chip processing, including a worktable 1, and further comprising: The transmission component 2 is used to transmit the fixture to be processed. A support plate 3 is fixedly connected to one side of the tail end of the transmission component 2. A positioning component 4 for positioning the fixture is fixedly installed on the top surface of the tail end of the transmission component 2. The positioning component 4 includes a stop block 41, a pneumatic clamping mechanism 42 and two positioning blocks 43. One end of the stop block 41 is fixedly connected to the top of the support plate 3, and the other end extends laterally to the top surface of the tail end of the transmission component 2. A mounting plate 44 is also fixedly connected to the top surface of the support plate 3. The mounting plate 44 is arranged parallel to the stop block 41. The pneumatic clamping mechanism 42 is fixedly installed on the bottom surface of the mounting plate 44. The two positioning blocks 43 are movably connected to the pneumatic clamping mechanism 42. The clamping assembly 5 is used to clamp the fixture on the transmission component 2. The clamping assembly 5 includes a support column 51, a fixing plate 52, a first guide rail 53, a first connecting plate 54, and a pneumatic gripper 55. One end of the fixing plate 52 is fixedly connected to the top of the support column 51, and the other end extends laterally. The first guide rail 53 is fixedly installed on one side of the fixing plate 52 and extends along the length of the fixing plate 52. A first slider 56 is fixedly connected to one side of the first connecting plate 54 and slides on the first guide rail 53. The pneumatic gripper 55 is fixedly installed on the other side of the first connecting plate 54. The fixing plate 52 is also provided with a driving assembly 57, which is used to drive the first connecting plate 54 and the pneumatic gripper 55 to slide back and forth along the first guide rail 53. The drive assembly 57 includes a motor 572, a transmission belt 573, a drive roller 574, and a driven roller 575. A support plate 571 is fixedly mounted on the top surface of one end of the fixed plate 52. The motor 572 is fixedly mounted on the support plate 571. A rotating rod is connected to the output shaft of the motor 572. The drive roller 574 is fixedly mounted on the rotating rod. A grooved connector is fixedly connected to the other side of the fixed plate 52. A connecting rod 75 is rotatably connected to the grooved connector. The driven roller 575 is fixedly mounted on the connecting rod 75. The drive roller 574 and the driven roller 575 are connected by the transmission belt 573. A driven plate 576 is fixedly mounted on the other side of the fixed plate 52. The driven plate 576 is in frictional contact with the transmission belt 573. Motor 572 drives drive roller 574 to rotate. The rotation of drive roller 574 drives conveyor belt 573 and driven roller 575 to rotate simultaneously. Driven plate 576 moves with the third conveyor belt 573, thereby driving the first connecting plate 54 and pneumatic gripper 55 connected thereto to achieve precise position movement.
[0028] The receiving assembly 6 includes a support block 61, a second guide rail 62, a slide plate 63, and multiple carriers 65. The support block 61 is fixedly installed on the top surface of the worktable 1 and extends along the length of the worktable 1. The second guide rail 62 is fixedly installed on the top surface of the support block 61. Multiple second sliders 64 are fixedly installed on the bottom surface of the slide plate 63, and the second sliders 64 slide in cooperation with the second guide rail 62. The multiple carriers 65 are fixedly installed at equal intervals on the top surface of the slide plate 63. The chip placement board containing the chip to be liquid soldered is placed on the carrier 65 on the top surface of the slide plate 63. At the same time, the slide plate 63 moves along the second guide rail 62 via the second sliders 64, so that the carrier 65 at the head end of the slide plate 63 corresponds to the tail end of the transmission member 2. Then, the pneumatic gripper 55 in the clamping assembly 5 clamps the fixture on the transmission member 2 and places it on the fixture on the carrier 65, thereby fixing the chip. Then, the slide plate 63 continues to slide, transporting the chip placement board containing the chip to be liquid soldered to the processing area for processing.
[0029] Two clamping components 7 are also fixedly installed on one side of the support block 61, and the two clamping components 7 correspond to two of the carriers 65 respectively. The two clamping components 7 correspond to two liquid welding mechanisms (the liquid welding mechanisms are not shown in the attached drawings of this application). When the slide plate 63 moves the chip and the fixture to the position corresponding to the liquid welding mechanism, the clamping components 7 act precisely on the surface of the fixture on the chip to be welded. The pressure is pre-adjusted and set to firmly fix the fixture in the working position, avoiding displacement or shaking of the chip during the welding process due to external factors such as welding thermal stress and mechanical vibration, thereby affecting the welding accuracy and quality. The clamping assembly 7 includes a fixing block 71, a cylinder 72, an L-plate 73, a second connecting plate 74, a connecting rod 75, and a pressure block 76. The fixing block 71 is fixedly installed on one side of the support block 61. The cylinder 72 is fixedly installed on the outside of the fixing block 71. The L-plate 73 is connected to the extended end of the cylinder 72. One end of the second connecting plate 74 is fixedly connected to the L-plate 73, and the other end extends upward. One end of the connecting rod 75 is fixedly connected to the top of the second connecting plate 74, and the other end extends laterally. The pressure block 76 is fixedly connected to the bottom surface of the end of the connecting rod 75 away from the second connecting plate 74. When the cylinder 72 is activated, its extended end drives the L-plate 73 to retract. The L-plate 73 pulls the second connecting plate 74 to retract synchronously. The connecting rod 75 connected to the top of the second connecting plate 74 moves accordingly, thereby pressing down the pressure block 76 on the bottom surface of the other end of the connecting rod 75, thus clamping and fixing the fixture. When the cylinder 72 reverses its movement, the pressure block 76 rises and releases the fixture.
[0030] Among them, the transmission component 2, the clamping component 5, and the receiving component 6 are all fixedly installed on the top surface of the workbench 1.
[0031] Specific working principle: S1. Fixture Transfer and Positioning: The fixture is transported to the tail end by the transfer component 2, at which time the positioning component 4 starts to work. One end of the stop block 41 is fixed to the top of the support plate 3, and the stop block 41 blocks and positions the front side of the fixture. The other end extends laterally to the top surface of the tail end of the transfer component 2. The pneumatic clamping mechanism 42 is installed on the bottom surface of the mounting plate 44 parallel to the stop block 41. The two positioning blocks 43 on it move under the drive of the pneumatic clamping mechanism 42 to position the left and right sides of the fixture. They cooperate with the stop block 41 to accurately position the fixture and ensure that the fixture is in the appropriate position and posture.
[0032] S2. Fixture clamping and placement: The motor 572 of the clamping assembly 5 starts, driving the active roller 574 to rotate. This causes the driven roller 575 to rotate synchronously via the conveyor belt 573. The driven plate 576, which is frictionally connected to the conveyor belt 573, moves accordingly, thereby driving the first connecting plate 54 (which slides on the first guide rail 53 via the first slider 56) and the pneumatic gripper 55 to move precisely to the fixture position along the first guide rail 53. After the pneumatic gripper 55 clamps the positioned fixture, the motor 572 rotates in the opposite direction, moving the fixture onto the chip on the carrier 65 on the top surface of the receiving assembly 63 and placing it down, thereby fixing the chip on the carrier.
[0033] S3. Chip and Fixture Conveying and Processing Preparation: The slide plate 63 of the receiving assembly 6 slides on the second guide rail 62 via the second slider 64, so that the carrier 65 at the head end of the slide plate 63 corresponds to the tail end of the transmission component 2 to receive the fixture. Then, it continues to slide to transport the chip placement board containing the chip to be liquid soldered to the processing area. When the slide plate 63 moves the chip and fixture to the position corresponding to the liquid soldering mechanism (the liquid soldering mechanism is not shown in the attached drawings of this application), the cylinder 72 of the clamping assembly 7 is activated, and the extended end drives the L plate to retract. The L plate pulls the second connecting plate 74, and the pressure block 76 is pressed down through the connecting rod 75 to firmly fix the fixture in the working position, preparing for the subsequent liquid soldering processing of the chip.
[0034] S4. Processing completion and reset: After the liquid welding process is completed, the cylinder 72 moves in the reverse direction, the pressure block 76 rises to release the fixture, and the slide plate 63 can continue to move to transport the processed fixture to the next process or remove it, completing one work cycle.
[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A positioning and gripping device for chip processing, comprising a worktable (1), characterized in that, Also includes: A transmission component (2) is used to transmit a fixture to be processed. A support plate (3) is fixedly connected to one side of the tail end of the transmission component (2). A positioning component (4) for positioning the fixture is fixedly installed on the top surface of the tail end of the transmission component (2). The positioning component (4) includes a stop (41), a pneumatic clamping mechanism (42), and two positioning blocks (43). One end of the stop (41) is fixedly connected to the top of the support plate (3), and the other end extends laterally to the top surface of the tail end of the transmission component (2). A mounting plate (44) is also fixedly connected to the top surface of the support plate (3). The mounting plate (44) is parallel to the stop (41). The pneumatic clamping mechanism (42) is fixedly installed on the bottom surface of the mounting plate (44). The two positioning blocks (43) are movably connected to the pneumatic clamping mechanism (42). Clamping assembly (5) is used to clamp the fixture on the transfer member (2); The receiving component (6) is used to store the fixture held by the clamping component (5).
2. The positioning and gripping device for chip processing according to claim 1, characterized in that: The clamping assembly (5) includes a support column (51), a fixing plate (52), a first guide rail (53), a first connecting plate (54), and a pneumatic gripper (55). One end of the fixing plate (52) is fixedly connected to the top of the support column (51), and the other end extends laterally. The first guide rail (53) is fixedly installed on one side of the fixing plate (52) and extends along the length of the fixing plate (52). A first slider (56) is fixedly connected to one side of the first connecting plate (54). The first slider (56) slides on the first guide rail (53). The pneumatic gripper (55) is fixedly installed on the other side of the first connecting plate (54). The fixed plate (52) is also provided with a drive assembly (57), which is used to drive the first connecting plate (54) and the pneumatic gripper (55) to slide back and forth along the first guide rail (53).
3. The positioning and gripping device for chip processing according to claim 2, characterized in that: The drive assembly (57) includes a motor (572), a transmission belt (573), a drive roller (574), and a driven roller (575). A bearing plate (571) is fixedly installed on the top surface of one end of the fixed plate (52) (44). The motor (572) is fixedly installed on the bearing plate (571). A rotating rod is connected to the output shaft of the motor (572). The drive roller (574) is fixedly installed on the rotating rod. A slotted connector is fixedly connected to the other side of the fixed plate (52). A connecting rod (75) is rotatably connected to the slotted connector. The driven roller (575) is fixedly installed on the connecting rod (75). The drive roller (574) and the driven roller (575) are connected by the transmission belt (573). A driven plate (576) is fixedly installed on the other side of the fixed plate (52). The driven plate (576) is frictionally connected to the transmission belt (573).
4. The positioning and gripping device for chip processing according to claim 1, characterized in that: The receiving assembly (6) includes a support block (61), a second guide rail (62), a slide plate (63), and multiple carriers (65). The support block (61) is fixedly installed on the top surface of the workbench (1) and extends along the length of the workbench (1). The second guide rail (62) is fixedly installed on the top surface of the support block (61). Multiple second sliders (64) are fixedly installed on the bottom surface of the slide plate (63). The second sliders (64) slide and engage with the second guide rail (62). The multiple carriers (65) are fixedly installed on the top surface of the slide plate (63) at equal intervals.
5. A positioning and gripping device for chip processing according to claim 4, characterized in that: Two clamping components (7) are also fixedly installed on one side of the support block (61), and the two clamping components (7) correspond to two of the carriers (65) respectively.
6. The positioning and gripping device for chip processing according to claim 5, characterized in that: The clamping assembly (7) includes a fixing block (71), a cylinder (72), an L-plate (73), a second connecting plate (74), a connecting rod (75), and a pressure block (76). The fixing block (71) is fixedly installed on one side of the support block (61). The cylinder (72) is installed on the outside of the fixing block (71). The L-plate (73) is connected to the extended end of the cylinder (72). One end of the second connecting plate (74) is fixedly connected to the L-plate (73), and the other end extends upward. One end of the connecting rod (75) is fixedly connected to the top of the second connecting plate (74), and the other end extends laterally. The pressure block (76) is fixedly connected to the bottom surface of the connecting rod (75) away from the second connecting plate (74).