A pneumatic internal support multi-mode clamp device

Abstract

This invention discloses a pneumatic internal support multi-mode clamping device, belonging to the field of clamping technology. It includes a worktable and a product component. A bridge plate is provided between a first mounting base and a second mounting base. An internal support component for internally supporting and clamping the product component is provided on the top side of the bridge plate. A connecting pull component for driving multiple sets of internal support components to work synchronously is provided at the bottom of the bridge plate. A limit component is provided at one end of the connecting pull component. This invention effectively improves the clamping efficiency of the product component by internally supporting and clamping it. The connecting pull component drives multiple sets of internal support components to simultaneously internally support and clamp multiple product components. The easily detachable connection between the internal support component and the connecting pull component allows for quick release of the limit on the internal support component, enabling convenient disassembly and replacement of its parts. The limit component positions the connecting pull component, facilitating the connection and disconnection of the connecting pull component and the internal support component.

Description

Technical Field

[0001] This invention relates to the field of clamping technology, and in particular to a pneumatic internal support multi-mode clamping device. Background Technology

[0002] In machining, tooling is essential. Suitable tooling can achieve the goals of rapid positioning, quick clamping, and improved machining efficiency. Existing standardized fixtures used to fix internally cylindrical workpieces often require assembling each workpiece individually and then clamping and fixing it by manually installing locking screws and other fasteners. This results in low efficiency of the entire operation process and a heavy workload for operators. To address these issues, various solutions have been proposed in the existing technology.

[0003] For example, Chinese Patent Publication No. CN217571984U discloses a pneumatic internal support fixture, which includes a support frame, an internal support column, a tapered connector, and a cylinder. The internal support column is connected to the support frame and is used to mount the workpiece. The tapered connector is inserted into the internal support column, expanding it to press against the inner wall of the workpiece and thus fixing it in place. The cylinder engages with the internal support column and drives the insertion and removal of the tapered connector. Therefore, the workpiece can be clamped and fixed using the driving action of the cylinder, achieving automated control, improving work efficiency, saving manpower, increasing output, stabilizing machining accuracy, and making it suitable for large-scale processing operations. The pneumatic internal support fixture has a simple structure, effectively saving space. The workpiece clamping process is simple, and the cost of maintenance and component replacement is low, meeting the needs of mass production.

[0004] When the device described in the above application is in use, the tapered connector is used to compress and expand the inner support column by means of a cylinder to pull the tapered connector. The tapered connector and the cylinder output end need to have a certain rigid connection or sufficient sealing at the connection point. This makes it inconvenient to remove multiple tapered connectors, resulting in troublesome and laborious removal and replacement of components such as tapered connectors, inner support columns and positioning cover plates. When clamping workpieces of different sizes, the efficiency of switching parts is low, which affects the overall processing efficiency. At the same time, the use of multiple cylinders working in sync results in a large number of electrical drive components, which increases the cost of use and maintenance, and has certain limitations in use.

[0005] Therefore, it is necessary to provide a pneumatic internal support multi-mode clamping device to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a pneumatic internal support multi-mode clamping device to solve the problems in the prior art where the pneumatic internal support clamping device has low efficiency in switching parts when clamping workpieces of different sizes, which affects the overall processing efficiency and has a large number of electrical drive components, resulting in high usage and maintenance costs.

[0007] To achieve the above objectives, the present invention provides the following solution to the above technical problems: a pneumatic internal support multi-mode clamping device, comprising a worktable and product parts, a bridge plate being provided above the worktable, an internal support assembly for internally supporting and clamping the product parts being provided on the top surface of the bridge plate, multiple sets of the internal support assembly being provided, and a connecting assembly being provided at the bottom of the bridge plate for driving multiple sets of internal support assemblies to simultaneously internally support and clamp multiple product parts and facilitating the disassembly and replacement of components of the internal support assembly.

[0008] As a further embodiment of the present invention, the inner support assembly includes multiple inner support bases fixed to the top side of the bridge plate. An inner support sleeve is fitted over the outer side of the inner support base. A pull rod is slidably inserted into the center of the inner support base. A stop boss is provided on the port of the inner support sleeve. A pressure plate that cooperates with the stop boss is fixed to one end of the pull rod. The product part is fitted over the outer side of the inner support sleeve. By pulling the other end of the pull rod, the pressure plate squeezes the stop boss, causing the side wall of the inner support sleeve to expand outward when sliding on the side of the inner support base, thereby clamping the product part with the inner support.

[0009] As a further embodiment of the present invention, the connecting assembly includes a pull plate arranged parallel to the bottom of the bridge plate, the output end of the cylinder is fixed to the bottom of the pull plate, a stop block is fixed to the end of the pull rod away from the pressure plate, and a plurality of U-shaped slots corresponding to the stop block are opened on one end of the pull plate. The pull rod can be inserted into the U-shaped slot, and the U-shaped slot and the stop block are matched for limiting. By pulling the pull plate, multiple pressure plates are pulled down synchronously, and multiple product parts are synchronously internally supported and clamped.

[0010] As a further embodiment of the present invention, a support plate is arranged parallel to the bottom of the pull plate, a sliding hole is provided on the side of the pull plate, and a guide post is fixed on the top surface of the support plate to slide and adapt to the sliding hole.

[0011] As a further embodiment of the present invention, an L-shaped support rod is fixed to the end of the support plate, and a T-shaped groove is provided at the bottom of the bridge plate. A connector slider that slides within the T-shaped groove is fixed to the end of the L-shaped support rod away from the support plate.

[0012] As a further aspect of the present invention, the sides of the connector slider that slide in cooperation with the T-shaped groove are all rolled with balls, and the balls are in contact with the sides of the T-shaped groove.

[0013] As a further embodiment of the present invention, a limiting component for limiting the position of the connecting assembly is provided on one end of the connecting assembly. The limiting component includes a first protruding plate fixed to one end of the support plate near the U-shaped slot, and a second protruding plate arranged aligned with the first protruding plate is fixed to the bottom of the bridge plate. A push-pull rod that slides through the second protruding plate is rotatably connected to the first protruding plate.

[0014] As a further embodiment of the present invention, an outer sleeve fitted onto the side of the second convex plate is fixed thereon, and an L-shaped groove arranged along the length of the outer sleeve is provided on the side of the outer sleeve. The limiting section on the L-shaped groove is located at the end of the outer sleeve away from the second convex plate. A locking block that cooperates with the sliding limit of the L-shaped groove is fixed on the side of the push-pull rod.

[0015] As a further embodiment of the present invention, a rubber pad is attached and fixed to the side of the limiting section of the push-pull rod, and the side of the card block opposite to the rubber pad has a certain roughness.

[0016] As a further embodiment of the present invention, a handle is fixed to the end of the push-pull rod, and a rubber sleeve is fitted onto the surface of the handle.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. A single cylinder drives a connecting assembly to simultaneously clamp multiple product parts with internal support components. Multiple product parts can be clamped with just one cylinder, effectively reducing the number of cylinders required and lowering usage and maintenance costs. The easily detachable connection between the internal support components and the connecting assembly allows for quick disengagement, releasing the limiting effect on the internal support components and facilitating component replacement. This makes it suitable for clamping product parts with different inner diameters, making component replacement easier and improving switching efficiency when clamping product parts with different inner diameters, thus increasing overall processing efficiency.

[0019] 2. Limiting the pull assembly by using a limiting component allows for positioning of the pull assembly's extreme positions, facilitating the connection and disconnection of the pull assembly and the inner support assembly. This improves the stability and accuracy of the connection between the inner support assembly and the pull assembly, and also allows for quick disconnection of the connection. It also facilitates the replacement of internal components of the inner support assembly and the clamping of different product parts, further enhancing the overall ease of use and practicality of the device. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a perspective view of the overall structure of the present invention;

[0022] Figure 2 for Figure 1 Enlarged view of the structure at point C;

[0023] Figure 3 This is a partial structural diagram of the internal support component of the present invention;

[0024] Figure 4 for Figure 3 Enlarged view of the structure at point B in the middle;

[0025] Figure 5 This is a cross-sectional view of the internal support component of the present invention;

[0026] Figure 6 for Figure 5 Enlarged view of the structure at point A in the middle;

[0027] Figure 7 This is a schematic diagram of the bottom structure of the bridge plate of the present invention. Figure 1 ;

[0028] Figure 8 This is a schematic diagram of the bottom structure of the bridge plate of the present invention. Figure 2 ;

[0029] Figure 9 This is a partial structural diagram of the U-shaped slot of the present invention;

[0030] Figure 10 This is a schematic diagram of a partial structure of the ball bearing of the present invention;

[0031] Figure 11 This is a schematic diagram of the pressure plate, tie rod, and stop boss structure of the present invention.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1. Internal support assembly; 101. Pressure plate; 102. Pull rod; 103. Stop boss; 104. Internal support base; 105. Internal support sleeve; 2. Connecting assembly; 201. Pull plate; 202. U-shaped groove; 203. Guide post; 204. Sliding hole; 205. Support plate; 206. L-shaped bracket rod; 207. Connector slider; 208. Ball bearing; 209. T-shaped slide groove; 210. Stop block; 3. Limiting assembly; 301. Push-pull rod; 302. First convex plate; 303. Handle rod; 304. Outer sleeve; 305. Locking block; 306. Rubber pad; 307. Second convex plate; 308. L-shaped groove; 4. Workbench plate; 5. Bridge plate; 6. First mounting base; 7. Second mounting base; 8. Product part; 9. Cylinder. Detailed Implementation

[0034] The present invention will be further described below with reference to embodiments.

[0035] Please see Figure 1-11 This invention provides a pneumatic internal support multi-mode clamping device, including a worktable 4 and a product part 8. A first mounting base 6 and a second mounting base 7 are fixed on the top surface of the worktable 4. A bridge plate 5 is provided between the first mounting base 6 and the second mounting base 7. An internal support assembly 1 for internally supporting and clamping the product part 8 is provided on the top side of the bridge plate 5. Multiple sets of internal support assemblies 1 are provided. A connecting assembly 2 for driving multiple sets of internal support assemblies 1 to work synchronously is provided at the bottom of the bridge plate 5. A limiting assembly 3 for limiting the connecting assembly 2 is provided at one end of the connecting assembly 2. A pneumatic actuator for driving the internal support assembly 1 is provided at the bottom of the bridge plate 5. When in use, cylinder 9, by fitting the product part 8 onto the outside of the inner support assembly 1, clamps the product part 8 internally, thus quickly fixing it. This eliminates the need for manually installing locking screws and other fixing components to hold and fix the workpiece, replacing the unstable and expensive clamps in existing technologies at a lower cost. The workpiece clamping process is simple, effectively improving the efficiency of product part 8 clamping. When clamping the product part 8 internally through the inner support assembly 1, a single cylinder 9 drives multiple sets of inner support assemblies 1 through the connecting assembly 2 to simultaneously clamp multiple product parts 8. Multiple product parts 8 can be internally clamped using a single cylinder 9, enabling the internal clamping of multi-mode product parts 8. This effectively reduces the number of cylinders 9 required for installation and use, further lowering usage and maintenance costs. Furthermore, the easily detachable connection between the internal support assembly 1 and the connecting assembly 2 allows for quick disengagement, thereby releasing the limiting effect on the internal support assembly 1. This facilitates easy disassembly and replacement of its components, making it suitable for internal clamping operations on product parts 8 with different inner diameters. This also makes component replacement in the internal support assembly 1 more convenient. This effectively improves the switching efficiency when clamping product parts 8 with different inner diameters, thereby improving the overall processing efficiency. By limiting the pull assembly 2 with the limiting component 3, the extreme position of the pull assembly 2 is located, which facilitates the connection and disconnection of the pull assembly 2 and the inner support assembly 1. This not only improves the stability and connection accuracy of the connection between the inner support assembly 1 and the pull assembly 2, but also allows for quick disconnection of the inner support assembly 1 and the pull assembly 2, making it convenient to replace the internal parts of the inner support assembly 1 and to clamp different product parts 8, further improving the overall ease of use and practicality of the device.

[0036] Further as Figure 1 , Figure 2 , Figure 3 and Figure 6As shown, it is worth noting that the inner support assembly 1 includes multiple inner support bases 104 fixed to the top side of the bridge plate 5. An inner support sleeve 105 is fitted over the inner support base 104. A pull rod 102 is slidably inserted into the center of the inner support base 104. A stop boss 103 is provided on the end of the inner support sleeve 105. A pressure plate 101 that cooperates with the stop boss 103 is fixed to one end of the pull rod 102. The product part 8 is fitted over the inner support sleeve 105. By pulling the other end of the pull rod 102, the pressure plate 101 presses the stop boss 103, causing the inner support sleeve 105 to... When the wall slides on the side of the inner support base 104, it expands outward, thus clamping the product part 8 inward. The inner support assembly 1 includes multiple inner support bases 104 fixed to the top side of the bridge plate 5. An inner support sleeve 105 is fitted on the outside of the inner support base 104. A pull rod 102 is slidably inserted into the center of the inner support base 104. A stop boss 103 is provided on the end of the inner support sleeve 105. A pressure plate 101 that cooperates with the stop boss 103 is fixed to one end of the pull rod 102. The product part 8 is fitted on the outside of the inner support sleeve 105. By pulling the other end of the pull rod 102, the pressure plate 101 squeezes the stop boss 103. The stop boss 103 causes the side wall of the inner support sleeve 105 to expand outward when sliding on the side of the inner support base 104, thus internally clamping the product part 8. By fitting the inner support sleeve 105 onto the outside of the inner support base 104, and then inserting the pull rod 102 into the center of the inner support base 104, the pressure plate 101 is placed inside the stop boss 103. The product part 8 is then fitted onto the outside of the inner support sleeve 105. By pulling down the pull rod 102, the pull rod 102 drives the pressure plate 101 to press down, and the pressure plate 101 presses against the stop boss 103, causing the side wall of the inner support sleeve 105 to expand outward on the side of the inner support base 104. When the surface slides outward, the product part 8 is internally clamped by the side wall of the inner support sleeve 105, which allows the product part 8 to be quickly fixed. This eliminates the need to clamp and fix the workpiece by manually installing locking screws and other fixing connectors. It replaces the unstable and expensive fixtures in the existing technology with a lower cost. The steps of clamping the workpiece are simple, which effectively improves the clamping efficiency of the product part 8. Depending on the inner diameter of the product part 8, the clamping operation can be quickly switched according to the inner diameter of the product part 8 by simply changing the inner support base 104 and the inner support sleeve 105. It has a wide range of applications.

[0037] Further as Figure 1 , Figure 5 , Figure 8 and Figure 11As shown, it is worth noting that the connecting assembly 2 includes a pull plate 201 disposed at the bottom of the bridge plate 5. The pull plate 201 is arranged parallel to the bridge plate 5. The cylinder 9 is disposed below the pull plate 201, and the output end of the cylinder 9 is fixed to the pull plate 201. A stop block 210 is fixed to the end of the pull rod 102 away from the pressure plate 101. A plurality of U-shaped slots 202 are provided on one end of the pull plate 201. The U-shaped slots 202 correspond to the stop blocks 210, and the U-shaped slots 202 and the pull rod 10 are also connected. When the two clamps are properly matched, pulling the pull plate 201 simultaneously pulls multiple pull rods 102 and pressure plates 101 to move downwards. When internally clamping the product part 8, the pull rods 102 are engaged in the U-shaped slots 202, and the cylinder 9 is activated. The output end of the cylinder 9 drives the pull plate 201 to move downwards. Through the cooperation of the U-shaped slots 202, the stop block 210, and the pull plate 201, multiple pull rods 102 are pulled downwards simultaneously, thereby realizing that multiple pressure plates 101 simultaneously stop multiple bosses. 103 is pressed down, causing multiple inner support sleeves 105 to simultaneously clamp multiple product parts 8. Multiple product parts 8 can be clamped using only one cylinder 9, effectively reducing the number of cylinders 9 installed and used, further reducing usage and maintenance costs. At the same time, the U-shaped slot 202 and the pull rod 102 are easily detachable. By moving the pull plate 201, the pull rod 102 is disengaged from the U-shaped slot 202, thereby quickly releasing the stop limit on the pull rod 102. The pull rod 102 and the pressure plate 101 can be easily removed from the inner support base 104 and the stop boss 103, respectively. This allows for easy replacement of the inner support base 104 and the inner support sleeve 105, making it suitable for clamping product parts 8 with different inner diameters. This makes component replacement more convenient and effectively improves the switching efficiency when clamping product parts 8 with different inner diameters, thereby improving the overall processing efficiency.

[0038] Further as Figure 7 and Figure 9As shown, it is worth noting that a sliding hole 204 is provided through the top side of the pull plate 201. There are two sliding holes 204, and the two sliding holes 204 are symmetrically distributed. A support plate 205 is provided directly below the pull plate 201 and is parallel to the pull plate 201. The cylinder 9 is fixed to the top side of the support plate 205. A guide post 203 is fixed to the top side of the support plate 205. The end of the guide post 203 away from the support plate 205 slides through the sliding hole 204. In actual operation, the support plate 205 is moved horizontally. The support plate 205 drives the pull plate 201 to move horizontally, so that the U-shaped slot 202 can quickly disengage from the pull rod 102, thereby simultaneously releasing the stop limit of multiple pull rods 102. When the pull plate 201 moves, the guide post 203 and the sliding hole 204 cooperate to guide and limit the pull plate 201, effectively reducing the warping of the pull plate 201 when it is under force, thereby improving the uniformity of the pulling force distribution when the pull plate 201 is pulled at different positions, and improving the clamping effect on the inner side of the product part 8 at different positions.

[0039] Further as Figure 8 , Figure 9 and Figure 10 As shown, it is worth noting that two symmetrically distributed L-shaped support rods 206 are fixed at the end of the support plate 205. The L-shaped support rods 206 are located at the end of the support plate 205 near the U-shaped slot 202. A connector slider 207 is fixed at the end of each L-shaped support rod 206 away from the support plate 205. A T-shaped groove 209 is provided inside the bridge plate 5 to slide and adapt to the connector slider 207. When the support plate 205 drives the pull plate 201 to move horizontally, the connector slider 207 slides in the T-shaped groove 209. Thus, the movement of the support plate 205 and the pull plate 201 is guided and limited by the cooperation of the connector slider 207 and the T-shaped groove 209, thereby improving the stability of the pull plate 201 and the support plate 205 when they move.

[0040] Further as Figure 1 , Figure 8 , Figure 9 and Figure 10 As shown, it is worth noting that the limiting component 3 includes a second protruding plate 307 fixed to the bottom of the bridge plate 5 near the U-shaped slot 202. A push-pull rod 301 slides through the side of the second protruding plate 307. A first protruding plate 302, aligned with the second protruding plate 307, is fixed to the support plate 205 near the U-shaped slot 202. The end of the push-pull rod 301 near the support plate 205 is rotatably connected to the first protruding plate 302. In actual operation, by pulling the push-pull rod 301, the push-pull rod 301 drives the support plate 205 to move, which facilitates the adjustment of the horizontal position of the support plate 205 and the pull plate 201.

[0041] Further as Figure 4 , Figure 8 and Figure 10 As shown, it is worth noting that an outer sleeve 304 is fixed on the side of the second protruding plate 307 away from the first protruding plate 302. The outer sleeve 304 is sleeved on the outside of the push-pull rod 301. The side of the push-pull rod 301 is slidably fitted with the inner side wall of the outer sleeve 304. An L-shaped groove 308 is provided on the side of the outer sleeve 304 along the length of the outer sleeve 304. The limiting section on the L-shaped groove 308 is located on the outer sleeve 304 away from the second protruding plate 302. At one end of 7, a locking block 305 is fixed on the side of the push-pull rod 301, which cooperates with the sliding limit of the L-shaped slot 308. When the pull rod 102 is inserted into the U-shaped slot 202, the locking block 305 is inserted into the limiting section of the L-shaped slot 308, thereby positioning the limit position of the pull plate 201, indicating that the pull rod 102 has been inserted into the U-shaped slot 202, improving the ease of use, and at the same time improving the stability of the pull plate 201 when pulling the pull rod 102.

[0042] This solution has the following working process: During use, the inner support sleeve 105 is fitted onto the outside of the inner support base 104. Then, the pull rod 102 is inserted into the center of the inner support base 104, causing the pressure plate 101 to be placed inside the stop boss 103. Next, the product part 8 is fitted onto the outside of the inner support sleeve 105, and the pull rod 102 is engaged in the U-shaped slot 202. The cylinder 9 is then activated, and its output end drives the pull plate 201 downwards, passing through the U-shaped slot 202, the stop block 210, and the pull plate 201. The coordinated action of 1 pulls multiple pull rods 102 downwards, which in turn causes the pressure plate 101 to press down. The pressure plate 101 presses against the stop boss 103, causing the side wall of the inner support sleeve 105 to expand outwards as it slides against the side of the inner support base 104. This allows multiple inner support sleeves 105 to simultaneously clamp multiple product parts 8. When clamping product parts 8 with different inner diameters, the push-pull rod 301 is pulled, causing the support plate 205 to move horizontally. The joint slider 207 moves in a T-shaped sliding motion. The sliding mechanism within the groove 209 guides and limits the movement of the support plate 205 and the pull plate 201 through the cooperation of the joint slider 207 and the T-shaped groove 209. The support plate 205 drives the pull plate 201 to move horizontally, allowing the U-shaped slot 202 to quickly disengage from the pull rod 102. This simultaneously releases the stop limits of multiple pull rods 102, making it easy to remove the pull rods 102 and pressure plate 101 from the inner support base 104 and the stop boss 103, respectively. The inner support base 104 and inner support sleeve 105 can be easily replaced to accommodate the inner support clamping operation of product parts 8 with different inner diameters. When the pull rod 102 is inserted into the U-shaped slot 202, the locking block 305 is inserted into the limiting section of the L-shaped slot 308, thereby positioning the limit position of the pull plate 201, indicating that the pull rod 102 has been inserted into the U-shaped slot 202, and enabling the pull plate 201 to stably pull the pull rod 102 for the inner support clamping of multi-mode product parts 8.

[0043] Further as Figure 9 and Figure 10 As shown, it is worth noting that multiple balls 208 are rolled on the side of the connector slider 207. These balls 208 are distributed on the side of the connector slider 207 that slides into the T-shaped groove 209, and the surface of the balls 208 contacts the side of the T-shaped groove 209. In actual operation, the multiple balls 208 effectively reduce the frictional resistance of the connector slider 207 when it slides in the T-shaped groove 209, thereby improving the smoothness and accuracy of the horizontal movement of the support plate 205 and the pull plate 201.

[0044] Further as Figure 4As shown, it is worth noting that rubber pads 306 are fixedly attached to both opposite sides of the limiting section of the push-pull rod 301, and the side of the locking block 305 opposite to the rubber pads 306 has a certain degree of roughness. In actual operation, the surface of the rubber pads 306 and the locking block 305 with a certain degree of roughness is used to improve the stability of the locking block 305 in the limiting section of the L-shaped slot 308 and prevent slippage.

[0045] Further as Figure 9 and Figure 10 As shown, it is worth noting that a handle rod 303 is fixed to the end of the push-pull rod 301, and a rubber sleeve is fitted onto the surface of the handle rod 303. In actual operation, by holding and rotating the handle rod 303, the push-pull rod 301 is rotated, causing the locking block 305 on the push-pull rod 301 to engage and disengage from the limiting section of the L-shaped locking groove 308. The handle rod 303 has a relatively long lever arm, making it easy to operate.

[0046] In summary: A single cylinder 9, through the connecting assembly 2, drives multiple sets of inner support assemblies 1 to simultaneously clamp multiple product parts 8. Multiple product parts 8 can be clamped using only one cylinder 9, effectively reducing the number of cylinders 9 required and further lowering usage and maintenance costs. Furthermore, the easily detachable connection between the inner support assembly 1 and the connecting assembly 2 allows for quick disengagement, releasing the limiting effect on the inner support assembly 1 and facilitating disassembly for component replacement. This makes it suitable for clamping product parts 8 with different inner diameters, ensuring efficient internal clamping. The replacement of components in the support assembly 1 is more convenient, effectively improving the switching efficiency when clamping product parts 8 with different inner diameters, thereby improving the overall processing efficiency. The limit assembly 3 limits the connection of the connecting assembly 2, thereby positioning the extreme position of the connecting assembly 2, which facilitates the connection and disconnection of the connecting assembly 2 and the inner support assembly 1. This not only improves the stability and connection accuracy when the inner support assembly 1 and the connecting assembly 2 are connected, but also allows for quick disconnection of the inner support assembly 1 and the connecting assembly 2, making it convenient to replace the internal parts of the inner support assembly 1 and clamp different product parts 8, further improving the convenience and practicality of the overall device.

[0047] Cylinder 9 can be purchased from the market. Cylinder 9 is equipped with a power supply. It is a mature technology in this field and has been fully disclosed. Therefore, it will not be described again in the specification.

Claims

1. A pneumatic internal support multi-mode clamping device, comprising a worktable and a product part, characterized in that, A bridge plate is provided above the workbench, and an internal support assembly for internally supporting and clamping the product parts is provided on the top surface of the bridge plate. Multiple sets of internal support assemblies are provided. A connecting assembly is provided at the bottom of the bridge plate to drive multiple sets of internal support assemblies to simultaneously internally support and clamp multiple product parts and facilitate the disassembly and replacement of internal support assemblies. The inner support assembly includes multiple inner support bases fixed to the top side of the bridge plate. An inner support sleeve is fitted over the outer side of the inner support base. A pull rod is slidably inserted into the center of the inner support base. A stop boss is provided on the port of the inner support sleeve. A pressure plate that cooperates with the stop boss is fixed to one end of the pull rod. The product part is fitted over the outer side of the inner support sleeve. By pulling the other end of the pull rod, the pressure plate squeezes the stop boss, causing the side wall of the inner support sleeve to expand outward when sliding on the side of the inner support base, thus clamping the product part with the inner support. The connecting assembly includes a pull plate arranged parallel to the bottom of the bridge plate. A cylinder is arranged below the pull plate, and the output end of the cylinder is fixed to the bottom of the pull plate. A stop block is fixed at the end of the pull rod away from the pressure plate. Multiple U-shaped slots corresponding to the stop blocks are opened on one end of the pull plate. The pull rod can be inserted into the U-shaped slots, and the U-shaped slots and the stop blocks cooperate to limit the movement. By pulling the pull plate, multiple pressure plates are pulled down simultaneously, and multiple product parts are clamped and supported in the same way. A support plate is arranged parallel to the bottom of the pull plate. A sliding hole is opened on the side of the pull plate. A guide post that slides and adapts to the sliding hole is fixed on the top surface of the support plate. One end of the connecting assembly is provided with a limiting component for limiting the connecting assembly. The limiting component includes a first protruding plate fixed to one end of the support plate near the U-shaped slot. The bottom of the bridge plate is fixed with a second protruding plate arranged aligned with the first protruding plate. A push-pull rod that slides through the second protruding plate is rotatably connected to the first protruding plate. An outer sleeve fitted around the push-pull rod is fixed on the side of the second convex plate. An L-shaped groove is provided on the side of the outer sleeve along the length of the outer sleeve. The limiting section on the L-shaped groove is located at the end of the outer sleeve away from the second convex plate. A locking block is fixed on the side of the push-pull rod to cooperate with the sliding limit of the L-shaped groove.

2. The pneumatic internal support multi-mode clamping device according to claim 1, characterized in that, An L-shaped support rod is fixed to the end of the support plate, and a T-shaped groove is provided at the bottom of the bridge plate. A connector slider that slides within the T-shaped groove is fixed to the end of the L-shaped support rod away from the support plate.

3. The pneumatic internal support multi-mode clamping device according to claim 2, characterized in that, The sides of the connector slider that slide in conjunction with the T-shaped groove are all connected with rolling balls, and the rolling balls are in contact with the sides of the T-shaped groove.

4. The pneumatic internal support multi-mode clamping device according to claim 1, characterized in that, A rubber pad is fixedly attached to the side of the limiting section of the push-pull rod, and the side of the card block opposite to the rubber pad has a certain roughness.

5. The pneumatic internal support multi-mode clamping device according to claim 1, characterized in that, A handle is fixed to the end of the push-pull rod, and a rubber sleeve is fitted onto the surface of the handle.

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