Multi-station automatic milling machine

Abstract

The utility model relates to the technical field of milling machines, and discloses a multi-station automatic milling machine which comprises a concave block, first air cylinders are fixedly connected to the left side and the right side of the rear side of the top of the concave block, a movable clamping block is fixedly connected to one end of each first air cylinder, and fixing plates are slidably connected to the left side and the right side of each movable clamping block. The bottom of the fixing plate is fixedly connected with the concave block, a top side machining assembly is arranged on the front side of the movable clamping block, and a plurality of supporting plates are slidably connected to the front side and the rear side of the top of the concave block. The first air cylinder drives the movable clamping block to move downwards, so that the top side machining assembly works on the top of a workpiece, the fixing assembly can adjust the height of the workpiece according to needs, the transmission assembly is started, the belt drives the clamping block cylinder to rotate to enable the first milling cutter to rotate, the second air cylinder drives the movable plate to move towards the workpiece, and the groove cylinder moves along with the movable plate. And the groove and the clamping block of the clamping block cylinder keep rotating, so that the workpiece can be efficiently and accurately machined.

Description

Technical Field

[0001] The utility model relates to the technical field of milling machines, in particular to a multi-station automatic milling machine. Background Art

[0002] The multi-station automatic milling machine is an advanced machining equipment with multiple working positions and automation functions. Through program control and mechanical operation, it can complete a variety of complex milling tasks on the same equipment. This milling machine is equipped with multiple workpiece clamping devices and can process multiple workpieces simultaneously, improving production efficiency and machining accuracy. The multi-station automatic milling machine is widely used in industrial manufacturing, especially suitable for fields that require large quantities and high-precision machining, such as automotive parts, aerospace parts, and electronic device casings. With its highly automated and precise machining capabilities, the multi-station automatic milling machine not only improves production efficiency but also reduces errors in manual operations. It is one of the indispensable important equipment in modern manufacturing.

[0003] After retrieval, the Chinese patent publication number is: CN208342213U, which discloses a multi-station milling machine, including a middle body, a frame, a turntable rotatably connected to the frame and used for installing and positioning the blank of a monkey wrench, a plurality of transmission mechanisms slidably connected to the frame and distributed around the turntable, a face milling cutter, a slot milling cutter, and a drill bit respectively detachably fixed to the output shafts of the plurality of transmission mechanisms. A driving mechanism for driving the turntable to rotate is arranged on the frame, and a positioning mechanism for fixing the position of the turntable is also arranged on the frame; the utility model has the following advantages and effects: This multi-station milling machine only needs to move the blank of the monkey wrench to the designated station through the turntable during the machining process to perform milling, grooving, and drilling operations on the wrench, eliminating the process of repeatedly clamping the tool and the blank of the monkey wrench in a conventional milling machine and simplifying the operation steps. Therefore, the machining efficiency of the wrench can be improved.

[0004] However, in the actual use process, when milling long workpieces, only one side can be milled, and milling operations cannot be performed simultaneously. Moreover, it is not possible to adjust the machining parameters well for the workpiece, and only manual adjustment can be carried out, thus increasing the working intensity of the staff. Content of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a multi-station automatic milling machine, aiming to improve the problems in the prior art that only one side can be milled, milling operations cannot be performed simultaneously, and it is not possible to adjust the machining parameters well for the workpiece, and only manual adjustment can be carried out.

[0006] To achieve the above object, the utility model adopts the following technical solutions: A multi-station automatic milling machine, including a concave block, both the left and right sides of the rear side of the top of the concave block are fixedly connected with first cylinders, one end of each first cylinder is fixedly connected with a moving clamping block, the left and right sides of the moving clamping block are slidably connected with a fixing plate, the bottom of the fixing plate is fixedly connected with the concave block, a top-side processing component is arranged on the front side of the moving clamping block, a plurality of support plates are slidably connected to the front and rear sides of the top of the concave block, an adjustment and fixing component is arranged on the right side of the support plate, an L-shaped plate is fixedly connected to the top of the adjustment and fixing component, a transmission component is arranged on the top of the rear side of the L-shaped plate, a concave-notch clamping plate is fixedly connected to the middle of the top end of the L-shaped plate, a second cylinder is fixedly connected to the outside of the concave-notch clamping plate, one end of the second cylinder is fixedly connected with a moving plate, a clamping block cylinder is rotatably connected to the outside of the moving plate, a groove cylinder is slidably connected to the inner wall of the clamping block cylinder, the outside of the groove cylinder penetrates through the second cylinder and is fixedly connected with a first milling cutter, a belt is arranged between the transmission component and the outside of the clamping block cylinder, a fixed dust suction mechanism is arranged on the left side of the top of the concave block, and the fixed dust suction mechanism is used for fixing the workpiece during processing and removing dust.

[0007] As a further description of the above technical solution:

[0008] The fixed dust suction mechanism includes a fixed block, the fixed block is fixedly connected to the left side of the top of the concave block, a limit clamping plate is fixedly connected to the right side of the fixed block, support plates are fixedly connected to the left and right sides of the inner wall of the concave block, a collecting concave plate is fixedly connected to the bottom of the support plate, a plurality of holes are formed in the top of the support plate, a discharge pipe is communicated with the rear side of the collecting concave plate, the outside of the discharge pipe penetrates through the concave block, and a plurality of limit plates are fixedly connected to the top of the support plate.

[0009] As a further description of the above technical solution:

[0010] The top-side processing component includes a fixed clamping block, the fixed clamping block is fixedly connected to the front side of the moving clamping block, a moving clamping plate is slidably connected to the front side of the fixed clamping block, a drilling device is fixedly connected to the inner wall of the moving clamping plate, and a second milling cutter is arranged at the bottom of the drilling device.

[0011] As a further description of the above technical solution:

[0012] The adjustment and fixing component includes a triangular clamping plate, the triangular clamping plate is fixedly connected to the right side of the support plate, an L-shaped support plate is slidably connected to the outside of the triangular clamping plate, fixing screws are arranged on both the upper and lower sides of the front part of the L-shaped support plate, and the outside of the fixing screws penetrates through the L-shaped support plate.

[0013] As a further description of the above technical solution:

[0014] The transmission assembly includes a servo motor, which is fixedly connected to the outer top of the L-shaped plate. The output end of the servo motor penetrates through the L-shaped plate and is fixedly connected with a first gear. The outer side of the first gear is meshed with a second gear. The rear side of the second gear is fixedly connected with a cylinder, and the rear side of the cylinder penetrates through the L-shaped plate and is fixedly connected with a first pulley.

[0015] As a further description of the above technical solution:

[0016] The right side of the concave block is fixedly connected with a control console, which is electrically connected to the first cylinder, the drilling equipment and the servo motor respectively. The top of the control console is fixedly connected with an alarm lamp.

[0017] As a further description of the above technical solution:

[0018] Guide rods are slidably connected to the left and right sides of the top of the outer wall of the notch clamping plate. Buffer plates are fixedly connected to the outer sides of the guide rods. Buffer springs are arranged on the outer walls of the guide rods. Cooling nozzles I are fixedly connected to the left and right sides of the top of the notch clamping plate. A cooling nozzle II is fixedly connected to the right side of the movable clamping plate. A plurality of support columns are arranged at the bottom of the concave block. The support columns penetrate through the concave block and are threadedly connected with fixing nuts.

[0019] As a further description of the above technical solution:

[0020] Chute grooves are formed on the left and right sides of the movable clamping block, and the chute grooves are slidably connected with the corresponding fixing plates. Groove recesses are formed on the upper and lower sides of the front part of the fixed clamping block, and the groove recesses are slidably connected with the movable clamping plate. A plurality of fastening screws are arranged on the front side of the movable clamping plate, and the movable clamping plate is fixedly connected with the fixed clamping block through the fastening screws.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the first cylinder drives the movable clamping block to move downward, so that the top processing assembly operates on the top of the workpiece. The fixing assembly can adjust the height of the workpiece as required. The transmission assembly is started, and the belt drives the clamping block cylinder to rotate, which is engaged with the groove cylinder, so that the first milling cutter rotates. The second cylinder drives the movable plate to move towards the workpiece, and the groove cylinder moves along with it. By maintaining the rotation through the engagement of the groove and the clamping block of the clamping block cylinder, the workpiece can be processed efficiently and accurately.

[0023] 2. In the utility model, the workpiece is placed on the support plate, and the limiting plate and the limiting clamping plate are used to ensure the correct placement of the workpiece. The chips and dust generated during processing fall into the collecting concave plate, and then are discharged through the discharge pipe by the dust suction device, so as to keep the processing environment clean. Description of the Drawings

[0024] Figure 1 Isometric view of a multi-station automatic milling machine proposed by the present utility model;

[0025] Figure 2 Is Figure 1 Enlarged view of part A of;

[0026] Figure 3 Front view of a multi-station automatic milling machine proposed by the present utility model;

[0027] Figure 4 Top view of a multi-station automatic milling machine proposed by the present utility model;

[0028] Figure 5 Cross-sectional view of the L-shaped plate of a multi-station automatic milling machine proposed by the present utility model.

[0029] Legend description:

[0030] 1. Concave block; 2. Fixed dust suction mechanism; 201. Fixed block; 202. Limit clamping plate; 203. Support plate; 204. Collection concave plate; 205. Hole; 206. Discharge pipe; 207. Limit plate; 3. Fixed plate; 4. Movable clamping block; 5. Fixed clamping block; 6. Movable clamping plate; 7. Drilling equipment; 8. Support plate; 9. Servo motor; 10. First gear; 11. Second gear; 12. Cylinder; 13. First pulley; 14. Notch clamping plate; 15. Second cylinder; 16. Movable plate; 17. Clamping block cylinder; 18. Grooved cylinder; 19. Belt; 20. First milling cutter; 21. Second milling cutter; 22. Triangular clamping plate; 23. L-shaped support plate; 24. Fixed screw; 25. L-shaped plate; 26. Slide groove; 27. Console; 28. Alarm light; 29. Guide rail rod; 30. Buffer plate; 31. Buffer spring; 32. Cooling spray pipe 1; 33. Cooling spray pipe 2; 34. Groove; 35. Fastening screw; 36. Support column; 37. Fixed nut; 38. First cylinder. Specific implementation manner

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] Refer to Figure 1 , Figure 2 And Figure 5, An embodiment provided by the present utility model: A multi-station automatic milling machine includes a concave block 1. On the left and right sides of the rear side of the top of the concave block 1, first cylinders 38 are fixedly connected. One end of the first cylinder 38 is fixedly connected with a moving clamping block 4. The left and right sides of the moving clamping block 4 are slidably connected with a fixing plate 3. The bottom of the fixing plate 3 is fixedly connected with the concave block 1. On the front side of the moving clamping block 4, there is a top-side processing component. On the front and rear sides of the top of the concave block 1, a plurality of support plates 8 are slidably connected. On the right side of the support plate 8, there is an adjustment and fixing component. On the top of the adjustment and fixing component, an L-shaped plate 25 is fixedly connected. On the top of the rear side of the L-shaped plate 25, there is a transmission component. In the middle of the top end of the L-shaped plate 25, a concave-notch clamping plate 14 is fixedly connected. On the outside of the concave-notch clamping plate 14, a second cylinder 15 is fixedly connected. One end of the second cylinder 15 is fixedly connected with a moving plate 16. On the outside of the moving plate 16, a clamping-block cylinder 17 is rotatably connected. Inside the clamping-block cylinder 17, a groove cylinder 18 is slidably connected. The outside of the groove cylinder 18 penetrates through the second cylinder 15 and is fixedly connected with a first milling cutter 20. There is a belt 19 between the transmission component and the outside of the clamping-block cylinder 17. On the left side of the top of the concave block 1, there is a fixed dust suction mechanism 2. The fixed dust suction mechanism 2 is used to fix the workpiece during processing and remove dust;

[0033] Specifically, when processing a workpiece to be processed, the first cylinder 38 drives the moving clamping block 4 to move downward, thereby driving the top-side processing component above it to operate on the top of the workpiece. And through the adjustment and fixing component, it can be adjusted and fixed according to the height required by the workpiece to be processed. Subsequently, when the transmission component is started, the clamping-block cylinder 17 can be driven to rotate together through the belt 19. Through the engagement between the clamping-block cylinder 17 and the groove cylinder 18, the first milling cutter 20 is driven to rotate. Subsequently, by starting the second cylinder 15, the moving plate 16 can be driven to move towards the workpiece to be processed. At this time, the groove cylinder 18 will move together with the moving plate 16. Through the grooves above it and the clamping blocks on the clamping-block cylinder 17, its rotation is not affected during the moving process.

[0034] Referring to Figure 1 、 Figure 3 and Figure 4 , the fixed dust suction mechanism 2 includes a fixed block 201. The fixed block 201 is fixedly connected to the left side of the top of the concave block 1. On the right side of the fixed block 201, a limit clamping plate 202 is fixedly connected. On the left and right sides of the inner wall of the concave block 1, support plates 203 are fixedly connected. At the bottom of the support plate 203, a collecting concave plate 204 is fixedly connected. On the top of the support plate 203, a plurality of holes 205 are opened. At the rear side of the collecting concave plate 204, a discharge pipe 206 is communicated. The outside of the discharge pipe 206 penetrates through the concave block 1. On the top of the support plate 203, a plurality of limit plates 207 are fixedly connected;

[0035] Specifically, the workpiece to be processed is placed above the support plate 203 and limited by the limit plate 207. And under the limitation of the limit clamping plate 202, when placing the workpiece to be processed, if the placement position is incorrect, it cannot be clamped in the processing area above the support plate 203. When debris and dust are generated during the processing, they will fall into the collection concave plate 204 through the holes 205. Subsequently, under the suction of the dust collection device, the debris and dust will be discharged through the discharge pipe 206, thus ensuring a clean processing environment.

[0036] Refer to Figure 1 、 Figure 4 and Figure 5 , the top-side processing assembly includes a fixed clamping block 5, the fixed clamping block 5 is fixedly connected to the front side of the movable clamping block 4, a movable clamping plate 6 is slidably connected to the front side of the fixed clamping block 5, a drilling device 7 is fixedly connected to the inner wall of the movable clamping plate 6, and a second milling cutter 21 is arranged at the bottom of the drilling device 7; the adjustment fixing assembly includes a triangular clamping plate 22, the triangular clamping plate 22 is fixedly connected to the right side of the support plate 8, an L-shaped support plate 23 is slidably connected to the outside of the triangular clamping plate 22, fixing screws 24 are arranged on both the upper and lower sides of the front part of the L-shaped support plate 23, and the outside of the fixing screws 24 penetrates through the L-shaped support plate 23; the transmission assembly includes a servo motor 9, the servo motor 9 is fixedly connected to the outer top of the L-shaped plate 25, the output end of the servo motor 9 penetrates through the L-shaped plate 25 and is fixedly connected to a first gear 10, a second gear 11 is meshed and connected to the outside of the first gear 10, a cylinder 12 is fixedly connected to the rear side of the second gear 11, and the rear side of the cylinder 12 penetrates through the L-shaped plate 25 and is fixedly connected to a first pulley 13;

[0037] Specifically, the height of the movable clamping plate 6 can be limited by the fixed clamping block 5, the second milling cutter 21 can be driven by the drilling device 7 to perform top operations, the height of the L-shaped plate 25 can be adjusted by moving the L-shaped support plate 23 up and down above the support plate 8, and the adjusted position can be fixed by the fixing screws 24. By starting the servo motor 9, the first gear 10 can be driven to rotate, and the second gear 11 on the outside can be driven to rotate together. Subsequently, the rotation of the second gear 11 can drive the rotation of the first pulley 13 at the rear side.

[0038] Refer to Figure 1 、 Figure 2 and Figure 4, a control console 27 is fixedly connected to the right side of the concave block 1. The control console 27 is electrically connected to the first cylinder 38, the drilling device 7, and the servo motor 9 respectively. An alarm lamp 28 is fixedly connected to the top of the control console 27; guide rods 29 are slidably connected to the left and right sides of the outer wall top of the notch clamping plate 14. Buffer plates 30 are fixedly connected to the outer sides of the guide rods 29. Buffer springs 31 are arranged on the outer walls of the guide rods 29. Cooling nozzles 32 are fixedly connected to the left and right sides of the top of the notch clamping plate 14. A cooling nozzle 33 is fixedly connected to the right side of the movable clamping plate 6. A plurality of support columns 36 are arranged at the bottom of the concave block 1. The support columns 36 penetrate through the concave block 1 and are threadedly connected with fixing nuts 37; chutes 26 are formed on the left and right sides of the movable clamping block 4. The chutes 26 are slidably connected to the corresponding fixing plates 3. Grooves 34 are formed on the upper and lower sides of the front part of the fixed clamping block 5. The grooves 34 are slidably connected to the movable clamping plate 6. A plurality of fastening screws 35 are arranged on the front side of the movable clamping plate 6. The movable clamping plate 6 is fixedly connected to the fixed clamping block 5 through the fastening screws 35;

[0039] Specifically, the start and operating power between the first cylinder 38, the drilling device 7, and the servo motor 9 can be controlled respectively through the control console 27. The alarm lamp 28 can remind the operator in case of a failure. When the second cylinder 15 pushes the movable plate 16 towards the workpiece to be processed, the buffer plate 30 will first contact the workpiece to be processed, and then continue to be pushed, and the buffer spring 31 will be compressed. The cooling nozzle 32 can cool the first milling cutter 20 during operation. The cooling nozzle 33 can cool the second milling cutter 21. The chute 26 can limit the moving range of the movable clamping block 4 above the fixing plate 3. The groove 34 can facilitate the movable clamping plate 6, so as to adjust the left and right positions of the horizontal plane processed by the second milling cutter 21, and the adjusted position can be fixed through the fastening screw 35.

[0040] Working principle: Before using this device, first, the first cylinder 38 drives the moving block 4 to move downward, thereby pulling the top-side processing assembly above it to perform processing tasks on the top of the workpiece. At the same time, by adjusting the fixing assembly, the height required for different workpieces can be adapted and firmly fixed. Subsequently, the transmission assembly is started. This assembly drives the chuck cylinder 17 to rotate together with it by the transmission action of the belt 19. The engaging structure between the chuck cylinder 17 and the groove cylinder 18 ensures that the first milling cutter 20 can rotate smoothly and stably. Immediately afterwards, the second cylinder 15 drives the moving plate 16 to approach the workpiece to be processed. During this process, the groove cylinder 18 moves synchronously with the moving plate 16, and the groove above it remains in close fit with the chuck on the chuck cylinder 17, ensuring that even during the movement, it will not affect the rotation of the chuck cylinder 17 and the components it drives, thus realizing an efficient and precise processing process. And through the fixed dust suction mechanism 2, the workpiece to be processed is placed stably above the support plate 203 and limited by the limit plate 207 to ensure the accuracy of the workpiece position. Under the restraint of the limit clamping plate 202, if the placement position of the workpiece is deviated, it cannot be smoothly engaged into the preset processing area of the support plate 203, thus effectively preventing the occurrence of processing errors. During the processing, debris or dust impurities generated will fall into the collecting concave plate 204 below through the pre-designed holes 205. Subsequently, under the strong suction of the dust suction device, the debris and dust in the collecting concave plate 204 will be smoothly discharged through the discharge pipe 206 to ensure the cleanliness and hygiene of the processing environment, thereby maintaining the continuity and efficiency of the production process.

[0041] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-station automatic milling machine, comprising a concave block (1), characterized in that: The left and right sides of the top rear side of the concave block (1) are fixedly connected to a first cylinder (38); one end of the first cylinder (38) is fixedly connected to a moving block (4); the left and right sides of the moving block (4) are slidably connected to a fixing plate (3); the bottom of the fixing plate (3) is fixedly connected to the concave block (1); a top side processing assembly is provided on the front side of the moving block (4); a plurality of support plates (8) are slidably connected to the front and rear sides of the top of the concave block (1); an adjustment fixing assembly is provided on the right side of the support plate (8); an L-shaped plate (25) is fixedly connected to the top of the adjustment fixing assembly; a transmission assembly is provided on the top of the rear side of the L-shaped plate (25); and a top middle portion of the L-shaped plate (25) is fixedly connected to A notch card plate (14), the outer side of the notch card plate (14) is fixedly connected to a second cylinder (15), one end of the second cylinder (15) is fixedly connected to a moving plate (16), the outer side of the moving plate (16) is rotatably connected to a block cylinder (17), the inner wall of the block cylinder (17) is slidably connected to a groove cylinder (18), the outer side of the groove cylinder (18) passes through the second cylinder (15) and is fixedly connected to a first milling cutter (20), a belt (19) is provided on the outer side of the transmission assembly and the block cylinder (17), and a fixed dust suction mechanism (2) is provided on the top left side of the concave block (1), the fixed dust suction mechanism (2) is used to fix the workpiece during processing and remove dust.

2. A multi-station automatic milling machine according to claim 1, characterized in that: The fixed dust suction mechanism (2) comprises a fixed block (201), the fixed block (201) being fixedly connected to the left side of the top of the concave block (1), the right side of the fixed block (201) being fixedly connected to a limiting clamping plate (202), the left and right sides of the inner wall of the concave block (1) being fixedly connected to support plates (203), the bottom of the support plate (203) being fixedly connected to a collecting concave plate (204), the top of the support plate (203) being provided with a plurality of holes (205), the rear side of the collecting concave plate (204) being connected to a discharge pipe (206), the outer side of the discharge pipe (206) passing through the concave block (1), and the top of the support plate (203) being fixedly connected to a plurality of limiting plates (207).

3. The multi-station automatic milling machine according to claim 1, characterized in that: The top side processing assembly comprises a fixed card block (5), the fixed card block (5) being fixedly connected to the front side of the movable card block (4), the front side of the fixed card block (5) being slidably connected to a movable card plate (6), the inner wall of the movable card plate (6) being fixedly connected to a drilling device (7), and a second milling cutter (21) being arranged at the bottom of the drilling device (7).

4. The multi-station automatic milling machine according to claim 1, characterized in that: The adjusting and fixing assembly comprises a triangular clamping plate (22), the triangular clamping plate (22) being fixedly connected to the right side of the supporting plate (8), an L-shaped support plate (23) being slidably connected to the outer side of the triangular clamping plate (22), fixing screws (24) being arranged on the upper and lower sides of the front part of the L-shaped support plate (23), and the outer side of the fixing screws (24) passing through the L-shaped support plate (23).

5. The multi-station automatic milling machine according to claim 1, characterized in that: The transmission assembly comprises a servo motor (9), the servo motor (9) being fixedly connected to the outer top of the L-shaped plate (25), the output end of the servo motor (9) passing through the L-shaped plate (25) and being fixedly connected to a first gear (10), the outer side of the first gear (10) being meshingly connected to a second gear (11), the rear side of the second gear (11) being fixedly connected to a cylinder (12), and the rear side of the cylinder (12) passing through the L-shaped plate (25) and being fixedly connected to a first pulley (13).

6. The multi-station automatic milling machine according to claim 1, characterized in that: A control console (27) is fixedly connected to the right side of the concave block (1), and the control console (27) is respectively connected to the first cylinder (38), the drilling device (7) and the servo motor (9) by electric wires. An alarm light (28) is fixedly connected to the top of the control console (27).

7. The multi-station automatic milling machine according to claim 3, characterized in that: The left and right sides of the top of the outer wall of the notch card plate (14) are slidably connected to guide rails (29), the outer side of the guide rails (29) is fixedly connected to a buffer plate (30), the outer wall of the guide rails (29) is provided with a buffer spring (31), the left and right sides of the top of the notch card plate (14) are fixedly connected to cooling nozzle 1 (32), the right side of the movable card plate (6) is fixedly connected to cooling nozzle 2 (33), and the bottom of the concave block (1) is provided with a plurality of support columns (36), the support columns (36) pass through the concave block (1) and are threadedly connected to fixing nuts (37).

8. The multi-station automatic milling machine according to claim 3, characterized in that: The left and right sides of the movable card block (4) are provided with sliding grooves (26), and the sliding grooves (26) are slidably connected to the corresponding fixed plates (3). The upper and lower sides of the front of the fixed card block (5) are provided with grooves (34), and the grooves (34) are slidably connected to the movable card plate (6). The front side of the movable card plate (6) is provided with a plurality of fastening screws (35), and the movable card plate (6) is fixedly connected to the fixed card block (5) through the fastening screws (35).

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