Pneumatic control pressing device

Abstract

The utility model discloses a pneumatic control hold-down device which comprises a supporting mechanism and a hold-down mechanism, the hold-down mechanism comprises a hold-down block, a support and an air cylinder, the air cylinder is installed on the support so that a distance can be reserved between the air cylinder and the supporting mechanism, and a push-out rod of the air cylinder penetrates through the support downwards and then is connected with an air cylinder connecting column. The end, away from the air cylinder, of the air cylinder connecting column is connected with a pressing block connecting shaft, the pressing block connecting shaft is horizontally arranged, the multiple pressing blocks are connected with the pressing block connecting shaft, and the multiple pressing blocks are arranged in the length direction of the pressing block connecting shaft so that the air cylinder can apply the same acting force through the multiple pressing blocks. The pressing block connecting shaft and the multiple pressing blocks are arranged, the pressing degrees of all the pressing blocks on the workpiece to be machined are the same through the pressing block connecting shaft, and the problem that when the pressing blocks press the workpiece to be machined, due to the fact that the pressing degrees are different, and gaps exist between the pressing blocks and the workpiece to be machined, the edge of the workpiece to be machined is warped is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece clamping, in particular to a pneumatically controlled clamping device. Background Art

[0002] The screen plate is an important working part of the screen machine to complete the screening process and is widely used in the mining machinery industry. In order to improve the working efficiency of the screen plate production, a clamping device with high clamping efficiency and fast speed is required according to the process requirements. The existing cylinder-driven pressing blocks operate together. When directly pressing the processed products, due to the uneven contact surface between the pressing blocks and the processed products, when the cylinder drives the pressing blocks to press the processed products, some pressing blocks will press the processed products tightly, while some pressing blocks will have a certain gap with the processed products, making the processed products appear to be loosely pressed, which is prone to quality risks. Moreover, today's process welding has many errors, low efficiency, and high labor consumption, which cannot meet current production needs at all. Therefore, it is urgent to develop a reliable and efficient clamping device. Utility Model Content

[0003] The utility model aims to overcome the deficiencies in the above-mentioned prior art and provides a pneumatically controlled clamping device, wherein the clamping mechanism of the pneumatically controlled clamping device comprises a clamping block connecting shaft and a plurality of clamping blocks, the clamping block connecting shaft being horizontally arranged, and the plurality of clamping blocks being arranged along the length direction of the clamping block connecting shaft, thereby realizing multi-point contact of the clamping mechanism with the workpiece to be processed, and through the cylinder and the pneumatic device, the clamping degree of each clamping block on the workpiece to be processed is the same, thereby solving the problem of warping of the workpiece to be processed due to different clamping degrees and gaps between the clamping blocks and the workpiece to be processed when the clamping blocks clamp the workpiece to be processed.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a pneumatically controlled clamping device, including a supporting mechanism and a clamping mechanism, the clamping mechanism is arranged on the supporting mechanism, and a dust removal mechanism for absorbing smoke and dust is also arranged on the supporting mechanism, the dust removal mechanism is located on the upper side of the clamping mechanism, the clamping mechanism includes a clamping block, a bracket and a cylinder, the number of the clamping blocks is multiple, the cylinder is installed on the bracket so that a distance is left between the cylinder and the supporting mechanism, the cylinder push rod passes downward through the bracket and is connected to a cylinder connecting column that moves up and down with the cylinder push rod, the cylinder connecting column is connected to a clamping block connecting shaft at the end away from the cylinder, and the clamping block connecting shaft is horizontally arranged, the clamping block is connected to the clamping block connecting shaft and a clamping space is formed between the clamping block and the supporting mechanism, and multiple clamping blocks are arranged along the length direction of the clamping block connecting shaft so that the cylinder can apply multiple forces of equal size to the workpiece to be processed through multiple clamping blocks.

[0005] Preferably, the bracket is an N-shaped structure, the number of the cylinders is multiple and the multiple cylinders are installed on the upper side of the lateral end of the bracket at intervals, a cylinder connecting column is connected to the ejection rod of each cylinder, and the multiple cylinders are connected to a pneumatic device together and the pneumatic device controls the operation of the cylinders.

[0006] Preferably, the clamping block connecting shaft is a cylindrical structure, a circular connecting head is provided at the end of the cylinder connecting column, a positioning block is provided at the top of the clamping block and the positioning block is circular, and the inner diameters of the connecting head and the positioning block are consistent with the outer diameter of the clamping block connecting shaft to facilitate the connecting head and the positioning block to be respectively fastened to the clamping block connecting shaft.

[0007] Preferably, the supporting mechanism includes a base and a workbench, the workbench is installed on the base and connected to the base through a bearing, a first gear and a motor are provided on the lower side of the workbench, the first gear is tightly connected to the workbench, the first gear is meshed with the gear on the output shaft of the motor and the motor drives the workbench to rotate through the gear on the output shaft, and the vertical end portions of the bracket are respectively connected to the left and right ends of the upper side of the workbench.

[0008] Preferably, the dust removal mechanism includes a dust removal baffle and support rods, the number of the support rods is two, the two support rods are respectively connected to the left and right ends of the dust removal baffle, the ends of the two support rods away from the dust removal baffle are respectively connected to the left and right ends of the base, and the dust removal baffle is provided with a dust removal pipe interface that can adsorb gas and smoke.

[0009] Preferably, a control console is also provided on the side wall of the base, and a plurality of buttons are provided on the control console. The control console is electrically connected to the motor and controls the operation of the motor through the buttons. The control console is also electrically connected to the pneumatic device and controls the operation of the cylinder through the pneumatic device.

[0010] Preferably, the pressing block is a wedge block that is larger at the top and smaller at the bottom.

[0011] Preferably, the bracket includes a cylinder bracket and a cylinder bracket support rod, the cylinder bracket support rod is located at the inner side of the cylinder bracket and supports the cylinder bracket upward, and the cylinder is installed at a lateral end of the cylinder bracket.

[0012] Preferably, a compression strip is provided on the outer periphery of each of the plurality of compression blocks.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The clamping mechanism of the utility model comprises a clamping block connecting shaft and a plurality of clamping blocks. The clamping block connecting shaft is horizontally arranged, and the plurality of clamping blocks are arranged along the length direction of the clamping block connecting shaft, thereby realizing multi-point contact of the clamping mechanism with the workpiece to be processed, and the clamping degree of each clamping block on the workpiece to be processed is the same through the cylinder and the pneumatic device, thereby solving the problem of warping of the workpiece to be processed due to different clamping degrees and gaps between the clamping block and the workpiece to be processed when the clamping block clamps the workpiece to be processed.

[0015] 2. The utility model is provided with a cylinder, and a cylinder connecting column is provided on the cylinder push rod. The cylinder connecting column is sleeved on the clamping block connecting shaft. The cylinder connecting column is driven to move up and down by the up and down movement of the cylinder push rod. The cylinder connecting column drives the clamping block connecting shaft to move up and down, thereby improving the clamping efficiency and reducing the labor intensity of the staff.

[0016] 3. The workbench of the utility model is set on the base through bearings, and a first gear is set on the lower side of the workbench. The first gear is meshed with the gear on the output shaft of the motor. The motor drives the gear on the output shaft of the motor to rotate, and the workbench rotates under the cooperation of the first gear and the bearing, thereby realizing the processing of the workpiece to be processed without moving the workpiece to be processed, thereby improving the processing accuracy of the workpiece to be processed.

[0017] The present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the clamping mechanism of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the support mechanism of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the dust removal mechanism of the utility model.

[0022] Description of reference numerals:

[0023] 1—base; 2—cylinder; 3—bracket;

[0024] 4—Pressing block; 5—Cylinder connecting column; 6—Pressing block connecting shaft;

[0025] 7—working table; 8—first gear; 9—end cover;

[0026] 10—Dust removal pipe interface; 11—End cover support rod; 12—Pneumatic device;

[0027] 13—Electric motor; 14—Control console; 15—Cylinder bracket support rod;

[0028] 16—connector 17—positioning block; 18—button;

[0029] 19—Workpiece to be processed; 20—Cylinder bracket; 21—Bearing. DETAILED DESCRIPTION

[0030] like Figure 1 As shown, the utility model includes a supporting mechanism and a clamping mechanism, the clamping mechanism is arranged on the supporting mechanism, and is used to clamp the workpiece 19 to be processed placed on the supporting mechanism, the supporting mechanism is also provided with a dust removal mechanism for absorbing smoke and dust, the dust removal mechanism is located on the upper side of the clamping mechanism, the clamping mechanism includes a clamping block 4, a bracket 3 and a cylinder 2, the number of the clamping blocks 4 is multiple, the cylinder 2 is installed on the bracket 3 so that a distance is left between the cylinder 2 and the supporting mechanism, the push rod of the cylinder 2 passes downward through the bracket 3 and is connected to a cylinder connecting column 5 that can move up and down with the push rod of the cylinder 2, the end of the cylinder connecting column 5 away from the cylinder 2 is connected to a clamping block connecting shaft 6, and the clamping block connecting shaft 6 is horizontally arranged, the clamping block 4 is connected to the clamping block connecting shaft 6, and a clamping space is formed between the clamping block 4 and the supporting mechanism, and multiple clamping blocks 4 are arranged along the length direction of the clamping block connecting shaft 6 so that the cylinder 2 can apply multiple forces of the same size to the workpiece 19 to be processed through multiple clamping blocks 4.

[0031] Specifically, the up and down movement of the push rod of the cylinder 2 drives the clamping block 4 to move up and down in the vertical direction. The up and down movement of the clamping block 4 increases or decreases the clamping space between the clamping block 4 and the support mechanism. When the clamping space increases, the workpiece 19 to be processed can be taken out or put into the clamping space. When the clamping space decreases, the workpiece 19 to be processed in the clamping space can be fixed. A plurality of clamping blocks 4 are arranged on the clamping block connecting shaft 6. The plurality of clamping blocks 4 can be evenly distributed along the length direction of the clamping block connecting shaft 6 at equal intervals, or can be randomly distributed along the length direction of the clamping block connecting shaft 6. The cylinder 2 pushes the clamping block connecting shaft 6 to move downward, and the clamping block connecting shaft 6 drives the plurality of clamping blocks 4 to move downward synchronously. The clamping blocks 4 continue to approach the workpiece 19 to be processed until the bottom of each clamping block 4 is pressed against the upper surface of the workpiece 19 to be processed, and the cylinder 2 stops working. Multiple clamping blocks 4 can realize multi-point clamping between the clamping mechanism and the workpiece 19 to be processed. Since the cylinder 2 has the same driving force on multiple clamping blocks 4, the clamping forces of multiple contact points between multiple clamping blocks 4 and the workpiece 19 to be processed are the same, which can effectively solve the problem of edge warping caused by the irregularity of the workpiece 19 to be processed and the uneven clamping force. At the same time, the cylinder 2 drives the clamping blocks 4 to clamp the workpiece 19 to be processed, thereby improving the clamping efficiency.

[0032] like Figure 1As shown, the bracket 3 is an N-shaped structure, the number of cylinders 2 is multiple and the multiple cylinders 2 are installed on the upper side of the lateral end of the bracket 3 at intervals, and a cylinder connecting column 5 is connected to the ejection rod of each cylinder 2. The multiple cylinders 2 are connected to a pneumatic device 12 together and the pneumatic device 12 controls the operation of the cylinders 2.

[0033] According to the production environment, the number of cylinders 2 is at least two, and the cylinders 2 are evenly arranged along the length direction of the horizontal end of the bracket 3. The pneumatic device 12 drives multiple cylinders 2 to work at the same time, so that the same pressure is supplied to multiple cylinders 2 at the same time, so that multiple cylinders 2 move up and down at the same time and the movement distance is the same, so that the clamping block connecting shaft 6 always maintains a horizontal state. Each cylinder 2 is installed on the upper side of the horizontal end of the bracket 3, and the push rod of each cylinder 2 passes through the bracket 3 downward and is connected to the cylinder connecting column 5. The number of cylinder connecting columns 5 is the same as the number of cylinders 2, and each cylinder 2 applies a force downward in a direction perpendicular to the clamped surface of the workpiece 19 to be processed. Multiple cylinders 2 are evenly arranged on the bracket 3. When the cylinder 2 drives the clamping block 4 to clamp the workpiece 19 to be processed, the left and right sides of the workpiece 19 to be processed can be evenly stressed to avoid warping of the workpiece 19 to be processed during welding. The cylinder 2 is a German Rexroth cylinder with a model of SC125*150 and a pressure of 0.1MPa-0.8MPa.

[0034] The clamping block connecting shaft 6 is a cylindrical structure, a circular connecting head 16 is provided at the end of the cylinder connecting column 5, a positioning block 17 is provided at the top of the clamping block 4, and the positioning block 17 is circular, the inner diameters of the connecting head 16 and the positioning block 17 are consistent with the outer diameter of the clamping block connecting shaft 6, so that the connecting head 16 and the positioning block 17 are respectively fastened to the clamping block connecting shaft 6.

[0035] Specifically, the cylinder connecting column 5 includes a horizontal end and a vertical end. The horizontal end of the cylinder connecting column 5 is connected to the end of the ejection rod of the cylinder 2. The cylinder connecting column 5 has two vertical ends, and the two vertical ends are respectively connected to the left and right sides of the horizontal end and extend downward. A connecting head 16 is provided on the two vertical ends of the cylinder connecting column 5. The inner diameter of the connecting head 16 is consistent with the outer diameter of the clamping block connecting shaft 6. The clamping block 4 is a square block. The end of the clamping block 4 along the length direction is provided with a positioning block 17, and the inner diameter of the positioning block 17 is consistent with the outer diameter of the clamping block connecting shaft 6, so that the clamping block connecting shaft 6 can be fastened with the connecting head 16 and the positioning block 17 after passing through the connecting head 16 and the positioning block 17 respectively. Multiple clamping blocks 4 and multiple cylinder connecting columns 5 are all sleeved on a clamping block connecting shaft 6, and the clamping block 4 is driven to move up and down through the clamping block connecting shaft 6.

[0036] Furthermore, the positioning block 17 on the top of the clamping block 4 can be set to a left positioning block and a right positioning block. The tops of the left positioning block and the right positioning block are threadedly connected by screws. When the position of the clamping block 4 needs to be adjusted, the screws are unscrewed, and the left positioning block and the right positioning block are separated from the clamping block connecting shaft 6. After the position adjustment of the clamping block 4 is completed, the clamping block connecting shaft 6 is fastened to the left positioning block and the right positioning block by screws.

[0037] The pressing block connecting shaft 6 is a rectangular parallelepiped structure, the connecting head 16 and the positioning block 17 are both square structures, and the pressing block connecting shaft 6 can pass through the connecting head 16 and the positioning block 17 and be tightly connected with the connecting head 16 and the positioning block 17 .

[0038] like Figure 1 , Figure 2 and Figure 3 As shown, the supporting mechanism includes a base 1 and a workbench 7. The workbench 7 is installed on the base 1 and connected to the base 1 through a bearing 21. A first gear 8 and a motor 13 are provided on the lower side of the workbench 7. The first gear 8 is tightly connected to the workbench 7. The first gear 8 is meshed with the gear on the output shaft of the motor 13 and the motor 13 drives the workbench 7 to rotate through the gear on the output shaft. The vertical end portions of the bracket 3 are respectively connected to the left and right ends of the upper side of the workbench 7.

[0039] The output shaft of the motor 13 is provided with a gear that rotates synchronously with the output shaft of the motor 13. After the motor 13 is started, the gear on the output shaft of the motor 13 is driven to rotate, and the gear on the output shaft of the motor 13 drives the first gear 8 to rotate. Since the worktable 7 is connected to the base 1 through the bearing 21, the first gear 8 drives the worktable 7 to rotate. The motor 13 can drive the worktable 7 to rotate arbitrarily in the horizontal direction. After the worktable 7 rotates 180 degrees, the positions of the two ends of the workpiece 19 to be processed fixed on the worktable 7 are exchanged, and the two ends of the workpiece 19 to be processed can be processed separately without moving the workpiece 19 to be processed. The processing accuracy of the workpiece 19 to be processed is improved. The motor 13 is a motor produced by Taili Motor Company with a model of 51K40GN-C.

[0040] like Figure 1 , Figure 4 As shown, the dust removal mechanism includes a dust removal baffle 9 and a support rod 11. There are two support rods 11. The two support rods 11 are respectively connected to the left and right ends of the dust removal baffle 9. The ends of the two support rods 11 away from the dust removal baffle 9 are respectively connected to the left and right ends of the base 1. The dust removal baffle 9 is provided with a dust removal pipe interface 10 which can adsorb gas and smoke.

[0041] Specifically, the dust removal baffle 9 is assembled from a plurality of square plates and a plurality of triangular plates, and the support rods 11 are installed at the left and right ends of the dust removal baffle 9 in the length direction. The support rods 11 fix the dust removal baffle 9 on the base 1. When the workpiece 19 to be processed is processed, the harmful gas and smoke generated are connected to the dust removal pipeline through the dust removal pipe interface 10 on the dust removal baffle 9, and the harmful gas and smoke are discharged to realize an environmentally friendly workshop. Furthermore, an exhaust mechanism that can extract the harmful gas and smoke to the dust removal pipe interface 10 can be set inside the dust removal baffle 9 to accelerate the discharge of harmful gas and smoke, thereby improving the protection of the health of the staff.

[0042] like Figure 1 , Figure 3 As shown, a control console 14 is also provided on the side wall of the base 1, and a plurality of buttons 18 are provided on the control console 14. The control console 14 is electrically connected to the motor 13 and controls the motor 13 to work through the buttons 18. The control console 14 is also electrically connected to the pneumatic device 12 and controls the cylinder 2 to work through the pneumatic device 12. The pneumatic device 12 is a CHINT pneumatic electromagnetic reversing valve.

[0043] The plurality of buttons 18 on the console 14 include start, stop, forward rotation, reverse rotation, rise and fall buttons 18, etc. According to the processing requirements of the workpiece 19 to be processed, the forward rotation and reverse rotation of the workbench 7 and the rise and fall of the pressing block 4 can be realized. Specifically, the pneumatic device 12 and the cylinder 2 are controlled to start by the start button 18 of the control console 14, and then the workpiece 19 to be processed is placed on the workbench 7 along the length direction of the workbench 7, and the workpiece 19 to be processed is located on the lower side of the clamping block 4. The descending button 18 is pressed, and the cylinder 2 drives the clamping block connecting shaft 6 to move downward, and the clamping block connecting shaft 6 drives the clamping block 4 to press the workpiece 19 to be processed downward. At this time, the stop button 18 is pressed, and the cylinder 2 and the pneumatic device 12 stop working, and the workpiece 19 to be processed can be welded and other operations can be performed. After welding is completed, the motor 13 is started and the forward rotation button 18 is pressed. The motor 13 drives the workbench 7 to rotate. When the workbench 7 rotates 180 degrees, the stop button 18 is pressed, and the other end of the workpiece 19 to be processed is welded and other operations are performed. After welding is completed, the pneumatic device 12 and the cylinder 2 are restarted and the ascending button 18 is pressed. The cylinder 2 drives the clamping block 4 to move upward, and the processed workpiece 19 to be processed can be taken out from the workbench 7. The operation of the motor 13, the pneumatic device 12 and the cylinder 2 is controlled by a plurality of buttons 18, thereby improving the automation level of the clamping device.

[0044] Furthermore, a plurality of guide grooves are provided on the upper side of the workbench 7, and the plurality of guide grooves are respectively provided along the width direction of the workbench 7. Clamping blocks for clamping the workpiece 19 to be processed are respectively provided at both ends of the guide grooves, and the clamping blocks can slide back and forth along the guide grooves.

[0045] In order to better fix the workpiece 19 to be processed, before the workpiece 19 to be processed is pressed by the pressing block 4, the workpiece 19 to be processed can be clamped by the clamping blocks arranged on the front and rear sides of the workpiece 19 to be processed, so as to avoid the position deviation of the workpiece 19 to be processed during the pressing process, which affects the processing effect of the workpiece 19 to be processed and further affects the product quality. There are multiple clamping blocks, and a clamping block is respectively arranged at the front and rear ends of each guide groove 23. The clamping blocks can slide along the guide groove to clamp workpieces 19 of different sizes to be processed.

[0046] The pressing block 4 is a wedge block that is larger at the top and smaller at the bottom.

[0047] The clamping block 4 is configured as a wedge block that is larger at the top and smaller at the bottom, which reduces the contact area between the clamping block 4 and the workpiece 19 to be processed, avoiding a large contact area between the clamping block 4 and the workpiece 19 to be processed, resulting in a gap between the clamping block 4 and the workpiece 19 to be processed, and causing warping problems when processing the workpiece 19 to be processed.

[0048] like Figure 1 As shown, the bracket 3 includes a cylinder bracket 20 and a cylinder bracket support rod 15, the cylinder bracket support rod 15 is located at the inner side of the cylinder bracket 20 and supports the cylinder bracket 20 upward, and the cylinder 2 is installed at the lateral end of the cylinder bracket 20. The cylinder bracket 20 is supported by the cylinder bracket support rod 15, which improves the stability of the cylinder bracket 20.

[0049] The outer peripheries of the plurality of clamping blocks 4 are all provided with clamping strips (not shown in the figure). The clamping strips provided on the outer peripheries of the clamping blocks 4 can increase the friction between the clamping blocks 4 and the workpiece 19 to be processed, thereby preventing the workpiece 19 from sliding. The clamping strips can also make the clamping blocks 4 and the workpiece 19 to be processed more fully in contact.

[0050] When in use, the pneumatic device 12 and the cylinder 2 are started through the control console 14, and the rising button 18 is pressed, and the cylinder 2 drives the pressing block 4 to move upward to increase the pressing space; then the workpiece 19 to be processed is placed on the workbench 7, and the descending button 18 is pressed, and the cylinder 2 drives the pressing block 4 to move vertically downward until the workpiece 19 to be processed is pressed, and the pneumatic device 12 and the cylinder 2 are stopped, and the multiple pressing blocks 4 press the workpiece 19 to be processed respectively. Since the multiple cylinders 2 are controlled by one pneumatic device 12, the downward forces of the multiple cylinders 2 are the same, and the multiple pressing blocks 4 connected to the pressing block connecting shaft 6 press the workpiece 19 to be processed at multiple points, and the multi-point forces on the workpiece 19 to be processed are also the same. At the same time, after the multiple clamping blocks 4 clamp the workpiece 19 to be processed, the workpiece 19 to be processed is processed. After the processing is completed, the motor 13 is started through the control console 14 and the forward rotation button 18 is pressed. The gear on the output shaft of the motor 13 starts to rotate and drives the first gear 8 meshing with it to rotate. The first gear 8 drives the workbench 7 to rotate. After the workbench 7 rotates 180 degrees, the motor 13 is stopped through the control console 14, and the other end of the workpiece 19 to be processed can be operated to avoid moving the workpiece 19 to be processed to affect the processing accuracy. After the operation is completed, the start and rise buttons 18 on the control console 14 are pressed, and the cylinder 2 drives the clamping block 4 to move upward, the clamping space is increased, and the workpiece 19 to be processed can be taken out. Multiple clamping blocks 4 are used to achieve multi-point contact with the workpiece 19 to be processed, so that there are too many gaps when the clamping blocks 4 clamp the workpiece 19 to be processed, which causes the problem of warping when welding the workpiece 19 to be processed. At the same time, the cylinder 2 pushes the clamping block 4 up and down to improve the clamping efficiency.

[0051] The above description is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent structural transformation made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A pneumatically controlled clamping device, characterized in that: The invention comprises a supporting mechanism and a clamping mechanism, wherein the clamping mechanism is arranged on the supporting mechanism, and a dust removal mechanism for absorbing smoke and dust is also arranged on the supporting mechanism, and the dust removal mechanism is located on the upper side of the clamping mechanism. The clamping mechanism comprises a clamping block (4), a bracket (3) and a cylinder (2), and the number of the clamping blocks (4) is multiple. The cylinder (2) is installed on the bracket (3) so that a distance is left between the cylinder (2) and the supporting mechanism, and the push rod of the cylinder (2) passes downward through the bracket (3) and is connected to a push rod that is connected to the push rod of the cylinder (2). A cylinder connecting column (5) is provided for the rod to move up and down, the end of the cylinder connecting column (5) away from the cylinder (2) is connected to a clamping block connecting shaft (6) and the clamping block connecting shaft (6) is arranged horizontally, the clamping block (4) is connected to the clamping block connecting shaft (6) and a clamping space is formed between the clamping block (4) and the supporting mechanism, and a plurality of the clamping blocks (4) are arranged along the length direction of the clamping block connecting shaft (6) so that the cylinder (2) can apply a plurality of forces of the same magnitude to the workpiece (19) to be processed through the plurality of clamping blocks (4).

2. A pneumatically controlled pressing device according to claim 1, characterized in that: The support (3) is an N-shaped structure. The number of the cylinders (2) is multiple and the multiple cylinders (2) are installed on the upper side of the lateral end of the support (3) at intervals. The ejection rod of each cylinder (2) is connected to a cylinder connecting column (5). The multiple cylinders (2) are connected to a pneumatic device (12) and the pneumatic device (12) controls the operation of the cylinders (2).

3. A pneumatically controlled pressing device according to claim 1, characterized in that: The clamping block connecting shaft (6) is a cylindrical structure, a circular connecting head (16) is provided at the end of the cylinder connecting column (5), a positioning block (17) is provided at the top of the clamping block (4), and the positioning block (17) is circular, and the inner diameters of the connecting head (16) and the positioning block (17) are consistent with the outer diameter of the clamping block connecting shaft (6), so that the connecting head (16) and the positioning block (17) are respectively fastened to the clamping block connecting shaft (6).

4. A pneumatically controlled pressing device according to claim 1, characterized in that: The support mechanism comprises a base (1) and a workbench (7); the workbench (7) is mounted on the base (1) and connected to the base (1) via a bearing (21); a first gear (8) and a motor (13) are provided on the lower side of the workbench (7); the first gear (8) is tightly connected to the workbench (7); the first gear (8) is meshed with a gear on an output shaft of the motor (13); and the motor (13) drives the workbench (7) to rotate via the gear on the output shaft; and the vertical end portions of the bracket (3) are respectively connected to the left and right ends of the upper side of the workbench (7).

5. A pneumatically controlled pressing device according to claim 1, characterized in that: The dust removal mechanism comprises a dust removal baffle (9) and a support rod (11), wherein the number of the support rods (11) is two, and the two support rods (11) are respectively connected to the left and right ends of the dust removal baffle (9), and the ends of the two support rods (11) away from the dust removal baffle (9) are respectively connected to the left and right ends of the base (1), and the dust removal baffle (9) is provided with a dust removal pipe interface (10) capable of absorbing gas and smoke.

6. A pneumatically controlled pressing device according to claim 4, characterized in that: A control console (14) is also provided on the side wall of the base (1), and a plurality of buttons (18) are provided on the control console (14). The control console (14) is electrically connected to the motor (13) and controls the operation of the motor (13) through the buttons (18). The control console (14) is also electrically connected to the pneumatic device (12) and controls the operation of the cylinder (2) through the pneumatic device (12).

7. A pneumatically controlled pressing device according to claim 1, characterized in that: The pressing block (4) is a wedge block that is larger at the top and smaller at the bottom.

8. A pneumatically controlled pressing device according to claim 2, characterized in that: The support (3) comprises a cylinder support (20) and a cylinder support support rod (15), wherein the cylinder support support rod (15) is located inside the cylinder support (20) and supports the cylinder support (20) upward, and the cylinder (2) is mounted at a lateral end of the cylinder support (20).

9. A pneumatically controlled pressing device according to claim 1, characterized in that: The outer circumferences of the plurality of compression blocks (4) are all provided with compression leather strips.

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