Quick-change pneumatic rotary workpiece adsorption device for numerical control machine tool

Abstract

The utility model discloses a quick-change pneumatic rotary type workpiece adsorption device for a numerical control machine tool. The quick-change pneumatic rotary type workpiece adsorption device comprises a cutter handle assembly, a rotary air cylinder, a hollow suction cup rotary arm and a material suction cup. The knife handle assembly comprises a knife handle main body and an air path block, a handle driving air source access port and a handle vacuum air source access port are respectively formed in two ends of the top surface of the air path block, and a handle driving air source access port communicated with the handle driving air source access port and a handle vacuum air source access port communicated with the handle vacuum air source access port are respectively formed in the bottom of the knife handle main body; the rotary air cylinder is detachably fixed to the bottom of the knife handle body and comprises a cylinder driving air source access port, a cylinder vacuum air source access port and a hollow air cylinder rod. The two ends of the hollow suction cup rotating arm are fixed to the hollow air cylinder rod and the material suction cup respectively. Compared with the prior art, the rotating device has a rotating function, can be arranged on a main shaft seat, can flexibly adjust the angle of a workpiece, omits a feeding and discharging manipulator, and reduces the equipment cost and the equipment occupied space.

Description

Technical Field

[0001] The utility model belongs to the technical field of grasping and clamping, and particularly relates to a quick-change pneumatic rotary workpiece adsorption device for a numerical control machine tool. Background Technique

[0002] When machining thin workpieces such as mobile phone or tablet computer glass covers by using a numerical control machine tool, it is necessary to realize the loading and unloading of the thin workpieces.

[0003] In the prior art, a workpiece adsorption device is used to adsorb the thin workpiece, and the workpiece adsorption device needs to be mounted on a loading and unloading robot. The loading and unloading robot carries the workpiece adsorption device and the thin workpiece as a whole to move, so as to realize the loading and unloading of the thin workpiece. The existing workpiece adsorption device is a simple suction cup structure, and the workpiece adsorption device itself has no rotation function.

[0004] The deficiencies of the prior art are as follows: on the one hand, because the workpiece adsorption device itself has no rotation function, it is impossible to adjust the angle to adsorb the thin workpiece or adjust the angle of the adsorbed thin workpiece, so the flexibility is poor and the application range is limited. On the other hand, when the existing workpiece adsorption device works, a special loading and unloading robot needs to be equipped, which greatly increases the equipment cost, and it is also necessary to provide a space for installing the loading and unloading robot outside the numerical control machine tool, resulting in a large overall space occupied by the equipment.

[0005] Therefore, it is really necessary to provide a new quick-change pneumatic rotary workpiece adsorption device for a numerical control machine tool to solve the above technical problems. Summary of the Invention

[0006] (I) Technical Problems to be Solved

[0007] Based on this, the utility model provides a quick-change pneumatic rotary workpiece adsorption device for a numerical control machine tool to solve the technical problems that the workpiece adsorption device in the prior art has poor flexibility due to no rotation function and high cost due to the need to be mounted on a robot for use.

[0008] (II) Technical Solutions

[0009] To solve the above technical problems, the present utility model provides a quick-change pneumatic rotary workpiece adsorption device for a numerical control machine tool, comprising: a tool holder assembly, a rotary cylinder, a hollow suction cup arm, and a material suction cup; the tool holder assembly includes a tool holder body and a gas circuit block which are cross-fixed in a cross shape, and at both ends of the top surface of the gas circuit block, a handle drive air source inlet and a handle vacuum air source inlet are respectively provided, and at the bottom of the tool holder body, the following are respectively provided: a handle drive air source outlet communicated with the handle drive air source inlet, and a handle vacuum air source outlet communicated with the handle vacuum air source inlet; the rotary cylinder is detachably fixed to the bottom of the tool holder body, and the rotary cylinder includes: a cylinder drive air source inlet, a cylinder vacuum air source inlet, and a hollow cylinder rod; both ends of the hollow suction cup arm are respectively fixed to the hollow cylinder rod and the material suction cup; the cylinder drive air source inlet is communicated with the handle drive air source outlet for introducing pressurized gas into the rotary cylinder to drive the overall rotation of the hollow cylinder rod, the hollow suction cup arm, and the material suction cup, and both ends of the hollow cylinder rod are respectively communicated with the handle vacuum air source outlet and the inside of the hollow suction cup arm for introducing negative pressure to provide vacuum suction for the material suction cup.

[0010] (III) Beneficial effects

[0011] Compared with the prior art, the quick-change pneumatic rotary workpiece adsorption device for a numerical control machine tool of the present utility model itself has a rotation function, can adsorb thin sheet workpieces placed vertically, and after rotation, place them horizontally; or adsorb thin sheet workpieces placed horizontally and then place them vertically, meeting the angle adjustment requirements in the actual loading and unloading operations of thin sheet workpieces on-site, greatly improving the use flexibility, meeting the loading and unloading requirements of workpieces placed at different angles, and expanding the use range. Moreover, the quick-change pneumatic rotary workpiece adsorption device for a numerical control machine tool of the present utility model can be installed on the spindle seat and is driven by the spindle seat to clamp materials. After taking out the quick-change pneumatic rotary workpiece adsorption device for a numerical control machine tool of the present utility model from the spindle seat, it does not affect the normal tool clamping of the spindle seat, eliminating the need for a loading and unloading manipulator, greatly reducing the equipment cost and the equipment occupation space. Description of the drawings

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0013] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present utility model;

[0014] Figure 2Schematic diagrams of two rotation limit states of the present utility model;

[0015] Figure 3 Disassembly of the present utility model Figure 1 ;

[0016] Figure 4 Disassembly of the present utility model Figure 2 ;

[0017] Figure 5 Schematic diagram of the application state of the present utility model (state of installing the main shaft);

[0018] Figure 6 In the present utility model: schematic diagram of the structure of the main shaft seat;

[0019] Figure 7 In the present utility model: schematic diagram of the structure of the main shaft seat;

[0020] Figure 8 Overall structure sectional view schematic diagram of the present utility model (also including the air source seat);

[0021] Figure 9 Is along Figure 8 Sectional view schematic diagram of the F-F line in.

[0022] Explanation of reference numerals:

[0023] 100, thin-walled workpiece;

[0024] 01, quick-change pneumatic rotary workpiece adsorption device for numerical control machine tools; 02, air source seat; 03, main shaft seat; 04, adapter plate; 05, first threaded connector; 06, second threaded connector; 07, third threaded connector; 08, locking seal nut; 09, locking screw; 010, seat threaded connector;

[0025] 021, seat driving air source air path; 022, seat vacuum air source air path; 023, seat sealing conical surface; 024, seat connection hole;

[0026] 031, tool shank interface; 032, shaft seat screw interface;

[0027] 041, adapter driving air path; 042, adapter vacuum air path; 043, upper connection hole of the adapter; 044, lower connection hole of the adapter;

[0028] 0411, adapter driving air inlet end; 0412, adapter driving air outlet end;

[0029] 0421, adapter vacuum air inlet end; 0422, adapter vacuum air outlet end;

[0030] 1. Tool shank assembly; 2. Rotary cylinder; 3. Hollow suction cup rotating arm; 4. Material suction cup; 5. Plug O-ring seal; 6. Support ring inner wall seal; 7. Support ring outer wall seal; 8. Cover seal; 9. Nut O-ring seal; 10. Rod O-ring seal; 11. Plug disc O-ring seal; 12. Shank O-ring seal; 13. Joint O-ring seal; 14. Direct air connection joint

[0031] 011. Tool shank body; 012. Air passage block

[0032] 21. Middle air cylinder rod; 22. Cylinder barrel assembly; 23. Compression return spring; 24. Piston assembly

[0033] 31. Rotating arm sleeve; 32. Rotating arm main pipe

[0034] 111. Insertion groove; 112. Shank threaded connection hole; 113. Shank drive air source outlet; 114. Shank vacuum air source outlet

[0035] 121. Shank drive air source inlet; 122. Shank vacuum air source inlet; 123. Shank seal groove; 124. Arc-shaped protrusion

[0036] 211. Cylinder rod body; 212. Ring-shaped pressing disc; 213. Driven block

[0037] 221. Front cover; 222. Cylinder body; 223. Rear cover; 224. Spring action chamber

[0038] 241. Piston cylinder; 242. Piston disc

[0039] 311. Pipe sealing plate

[0040] 2111. Inner rod section; 2112. Outer rod section

[0041] 2211. Cylinder drive air source inlet; 2212. Cylinder drive air passage; 2213. Cover support ring

[0042] 2221. Cylinder top connection hole; 2222. Cylinder linear sliding groove; 2223. Spring seat; 2224. Piston left limit step; 2225. Air inlet and outlet hole

[0043] 2231. Cylinder vacuum air source inlet; 2232. Cylinder vacuum air passage; 2233. Pressing disc receiving groove

[0044] 2411. Left cylinder body; 2412. Right cylinder body; 2413. Plug hole; 2414. Plug slider

[0045] 2421. Plug seal groove; 2422. Air inlet groove

[0046] 21121, rod communication hole; 21122, rod torque transmission plane; 21123, rod seal ring groove;

[0047] 22121, cylinder drive air source outlet;

[0048] 22131, piston right limit surface;

[0049] 24111, spiral drive groove. Detailed implementation manners

[0050] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific implementations disclosed below.

[0051] The following will further describe the quick-change pneumatic rotary workpiece adsorption device 01 for a numerically controlled machine tool of the present utility model with reference to the attached Figures 1-9 drawings.

[0052] Figure 8 In the figure, the arrow direction is the air flow direction, where: the blue arrow on the right is the pressure gas flow direction, and the red arrow on the left is the vacuum pumping / negative pressure gas flow direction.

[0053] The present utility model discloses a quick-change pneumatic rotary workpiece adsorption device 01 for a numerically controlled machine tool, including: a tool holder assembly 1, a rotary cylinder 2, a hollow suction cup rotating arm 3, and a material suction cup 4; the tool holder assembly 1 includes a tool holder body 011 and an air circuit block 012 that are cross-fixed in a cross shape. At both ends of the top surface of the air circuit block 012, there are respectively provided a handle drive air source inlet 121 and a handle vacuum air source inlet 122. At the bottom of the tool holder body 011, there are respectively provided: a handle drive air source outlet 113 communicated with the handle drive air source inlet 121, and a handle vacuum air source outlet 114 communicated with the handle vacuum air source inlet 122; the rotary cylinder 2 is detachably fixed to the bottom of the tool holder body 011. The rotary cylinder 2 includes: a cylinder drive air source inlet 2211, a cylinder vacuum air source inlet 2231, and a hollow cylinder rod 21; both ends of the hollow suction cup rotating arm 3 are fixed to the hollow cylinder rod 21 and the material suction cup 4 respectively; the cylinder drive air source inlet 2211 is communicated with the handle drive air source outlet 113 for introducing pressure gas into the rotary cylinder 2 to drive the overall rotation of the hollow cylinder rod 21, the hollow suction cup rotating arm 3, and the material suction cup 4. Both ends of the hollow cylinder rod 21 are communicated with the handle vacuum air source outlet 114 and the inside of the hollow suction cup rotating arm 3 respectively for introducing negative pressure to provide vacuum suction for the material suction cup 4.

[0054] The quick-change pneumatic rotary workpiece adsorption device of the present utility model is used for numerical control machine tools. Existing numerical control machine tools include: a spindle seat 03, a tool magazine tool sleeve, and an automatic tool changer. A tool shank interface 031 is provided at the bottom of the spindle seat 03. When the present utility model is in use, an air source seat 02 also needs to be added to the existing numerical control machine tool. The air source seat 02 is installed below the spindle seat 03 and moves synchronously with the spindle seat 03. The air source seat 02 is respectively connected to a pressure air source (such as an air compressor) or a vacuum air source (such as a vacuum pump) to provide a pressure air source and a vacuum air source. Specifically: The air source seat 02 is integrally block-shaped. A seat driving air source air path 021 for introducing a pressure air source and a seat vacuum air source air path 022 for introducing a vacuum air source are respectively provided on the air source seat 02; The air source seat 02 can be a two-piece split structure, which is respectively fixedly installed below the spindle seat 03. One piece is provided with the seat driving air source air path 021, and the other piece is provided with the seat vacuum air source air path 022. The air source seat 02 can also be integrally annular, and both sides of the annular structure are respectively used for accessing a pressure air source or a vacuum air source.

[0055] The present utility model includes a spindle mounting state and a tool magazine accommodating state; the spindle mounting state means that the present utility model is mounted on the spindle seat 03, and the tool magazine accommodating state means that the present utility model is mounted on the tool magazine tool sleeve. The switching between the two states is realized by the automatic tool changer. The quick-change pneumatic rotary workpiece adsorption device 01 for a numerical control machine tool of the present utility model, like the tools in the existing numerical control machine tool, can also realize the automatic replacement of the position under the action of the automatic tool changer. When in the spindle mounting state, the top of the tool shank body 011 is inserted into the tool shank interface 031 and fixed on the spindle seat 03. The upper surface of the air path block 012 abuts against the lower surface of the air source seat 02, and the shank driving air source access port 121 is communicated with the seat driving air source air path 021, and the shank vacuum air source access port 122 is communicated with the seat vacuum air source air path 022.

[0056] The structures and functions of the components in the quick-change pneumatic rotary workpiece adsorption device 01 for a numerical control machine tool in the present embodiment will be further described below.

[0057] Regarding the tool holder assembly 1: On the one hand, the tool holder assembly 1 needs to meet the functions of the existing CNC machine tool tool holders, that is, it can be docked and installed with the tool holder interface 031. In this embodiment, this function is realized by the tool holder body 011. The top of the tool holder body 011 has an interface for connecting with the tool holder interface 031, and the top of the tool holder body 011 can be inserted and fixed at the tool holder interface 031 of the spindle seat 03. Specifically, during implementation, the structure of the top of the tool holder body 011 matches the structure of the spindle seat 03. On the other hand, when the quick-change pneumatic rotary workpiece adsorption device 01 for the CNC machine tool is in the spindle installation state, the tool holder assembly 1 also needs to introduce pressurized gas and negative pressure air source into the rotary cylinder 2. To achieve this function, in this embodiment, when the tool holder body 011 is fixed at the tool holder interface 031 of the spindle seat 03, the handle drive air source connection port 121 is exactly connected to the seat drive air source gas path 021, and the handle vacuum air source connection port 122 is exactly connected to the seat vacuum air source gas path 022. Therefore, the structure of the tool holder assembly 1 adopting this embodiment can achieve the quick docking of the vacuum air source interface between the air source seat 02 and the quick-change pneumatic rotary workpiece adsorption device 01 of the present invention for the CNC machine tool, and at the same time can achieve the quick docking of the pressurized air source interface between the air source seat 02 and the quick-change pneumatic rotary workpiece adsorption device 01 of the present invention for the CNC machine tool.

[0058] Regarding the rotary cylinder 2: The rotary cylinder 2 is used to realize that under the drive of pressurized gas, the hollow cylinder rod 21 can rotate a certain angle, and after the pressurized gas is removed, the hollow cylinder rod 21 can rotate reversely and reset. The rotary cylinder 2 can be of the existing rotary cylinder 2 structure. The difference is that the hollow cylinder rod 21 in this embodiment is of a hollow structure and needs to form a vacuum extraction airway to lead the upper vacuum air source into the hollow suction cup rotating arm 3.

[0059] Regarding the hollow suction cup rotating arm 3 and the material suction cup 4: The hollow suction cup rotating arm 3 is fixedly connected and communicated with the hollow cylinder rod 21, and the hollow suction cup rotating arm 3 is also communicated with the material suction cup 4.

[0060] The usage process of the present invention is as follows: The objects of action of the present invention are thin workpieces 100 such as mobile phone glass and tablet glass.

[0061] In the initial state, the thin workpiece 100 is vertically stored in the material basket. When the CNC machine tool needs to clamp and load the thin workpiece 100, the present utility model is clamped on the spindle seat 03. The hollow cylinder rod 21 is in the vertically arranged initial state, and the present utility model is in the spindle mounting state. The spindle seat 03 drives the present utility model to move near the thin workpiece 100. The pressure air source respectively passes through: the seat driving air source air path 021, the handle driving air source inlet 121, the handle driving air source outlet 113, and the cylinder driving air source inlet 2211, and enters the rotary cylinder 2 to drive the overall rotation of the hollow cylinder rod 21, the hollow suction cup arm 3, and the material suction cup 4. After the material suction cup 4 rotates, the adsorption surface of the material suction cup 4 faces the thin workpiece 100 (at this time, the adsorption surface is parallel or substantially parallel to the thin workpiece 100). The vacuum pumping air source acts, so that a negative pressure is formed in the vacuum pumping air path, and the material suction cup 4 sucks a thin workpiece 100. After the spindle seat 03 drives the material suction cup 4 and the thin workpiece 100 to move to a preset position inside the CNC machine tool, the pressure air source stops acting. After the pressure gas is removed, the hollow cylinder rod 21 can rotate reversely and reset. The hollow cylinder rod 21 is vertically arranged, the thin workpiece 100 is located below the material suction cup 4, and the thin workpiece 100 is horizontally arranged. When the spindle seat 03 drives the material suction cup 4 and the thin workpiece 100 to move to a preset position close to the material placement table (not shown in the figure) of the machine tool, the vacuum adsorption air path is interrupted, and the thin workpiece 100 is placed on the material placement table; thus, the loading of the material is realized. Referring to the reverse process of the above process, the unloading of the material is realized.

[0062] As can be seen from the above, the quick-change pneumatic rotary workpiece adsorption device 01 for a CNC machine tool of the present utility model itself has a rotation function, can adsorb the vertically placed thin workpiece 100, and after rotation, horizontally place it; or adsorb the horizontally placed thin workpiece 100 and then vertically place it, meeting the angle adjustment requirements in the actual loading and unloading operations of the on-site thin workpiece 100, greatly improving the use flexibility, meeting the loading and unloading requirements of workpieces placed at different angles, and expanding the use range. Moreover, the quick-change pneumatic rotary workpiece adsorption device 01 for a CNC machine tool of the present utility model can be mounted on the spindle seat 03 and driven by the spindle seat 03 to clamp the material. After the quick-change pneumatic rotary workpiece adsorption device 01 for a CNC machine tool of the present utility model is taken out from the spindle seat 03, it does not affect the normal tool clamping of the spindle seat 03, does not affect the original functions of the CNC machine tool, and eliminates the loading and unloading manipulator, greatly reducing the equipment cost and the occupied space of the equipment.

[0063] According to the specific embodiment of the present utility model, an insertion groove 111 is further provided outside the tool handle main body 011, and the insertion groove 111 is located below the air path block 012; the tool handle main body 011 is in a columnar shape as a whole, and the air path block 012 is in a plate shape as a whole; and the tool handle main body 011 and the air path block 012 are of an integral structure.

[0064] In this embodiment, the insertion groove 111 is located below the air passage block 012. The provision of the insertion groove 111 facilitates the grasping by the automatic tool changer, and since the insertion groove 111 is located below the air passage block 012, it does not affect the docking of the air passage block 012 with the air source base 02. The tool shank body 011 and the air passage block 012 are of an integral structure to ensure strength and airtightness of the air passage.

[0065] According to a specific embodiment of the present utility model, the rotary cylinder 2 further includes: a cylinder block assembly 22, a compression return spring 23, and a piston assembly 24; a cylinder cavity is provided in the cylinder block assembly 22, and both ends of the hollow cylinder rod 21 are respectively an inner rod section 2111 and an outer rod section 2112. The inner rod section 2111 is located in the cylinder cavity, the outer rod section 2112 extends out of the cylinder block assembly 22 and is connected to the hollow suction cup swing arm 3, and the hollow cylinder rod 21 is rotatably connected to the cylinder block assembly 22; the piston assembly 24 is disposed in the cylinder cavity, and the piston assembly 24 divides the cylinder cavity into a pressure gas acting cavity and a spring acting cavity 224, and the piston assembly 24 is slidably connected to the cylinder block assembly 22; a plug hole 2413 axially penetrating through the piston assembly 24 is provided on the piston assembly 24, a recessed spiral drive groove 24111 is provided on the outer side wall of the piston assembly 24, the hollow cylinder rod 21 penetrates through the plug hole 2413, and a driven block 213 which protrudes and extends into the spiral drive groove 24111 is further provided on the outer side of the hollow cylinder rod 21. The driven block 213 is slidably connected to the spiral drive groove 24111; a cylinder drive air source connection port 2211 and a cylinder vacuum air source connection port 2231 are respectively provided on both sides of the top of the cylinder block assembly 22; the cylinder block assembly 22 further includes a cylinder drive air passage 2212 and a cylinder vacuum air passage 2232 formed therein; both ends of the cylinder vacuum air passage 2232 are respectively communicated with the cylinder vacuum air source connection port 2231 and the inner rod section 2111, and both ends of the cylinder drive air passage 2212 are respectively communicated with the cylinder drive air source connection port 2211 and the pressure gas acting cavity; the compression return spring 23 is located in the spring acting cavity 224; the rotation angle range of the hollow cylinder rod 21 is from 0° to 100°.

[0066] In this embodiment, a specific structure of the rotary cylinder 2 is provided.

[0067] The cylinder block assembly 22 is used to form a cylinder cavity to accommodate the compression return spring 23, the piston assembly 24, and a part of the hollow cylinder rod 21. The cylinder block assembly 22 is further used to form a pressure gas passage for introducing pressure gas into the pressure gas acting cavity, and the cylinder block assembly 22 is further used to form a vacuum gas passage for introducing vacuum gas into the hollow cylinder rod 21. The piston assembly 24 is slidably connected to the cylinder block assembly 22, and the piston assembly 24 moves linearly under the action of the pressure air source.

[0068] The middle air cylinder rod 21 has multiple functions. On the one hand, the middle air cylinder rod 21 penetrates through the piston assembly 24, and the driven block 213 is slidably connected to the spiral drive groove 24111. When the piston assembly 24 moves linearly, the spiral drive groove 24111 moves linearly synchronously, which can force the driven block 213 and the middle air cylinder rod 21 as a whole to rotate, realizing the conversion of linear power into rotational power, providing rotational power for the hollow suction cup rotating arm 3, and finally realizing the rotation of the material suction cup 4. On the other hand, the internal hollow structure of the middle air cylinder rod 21 can also be used as a vacuum air path, and the vacuum air path is extended to the hollow suction cup rotating arm 3, and finally provides power for the adsorption of the material suction cup 4.

[0069] The piston assembly 24 is used to reciprocate under the action of the pressurized gas and compress the compression return spring 23, driving the middle air cylinder rod 21 to rotate. After the pressurized gas is removed, under the elastic force of the compression return spring 23, the middle air cylinder rod 21 can rotate in the reverse direction and reset.

[0070] As can be seen from the above, the rotary cylinder 2 in this embodiment can not only convert linear power into rotational power, but also connect the vacuum air source with the material suction cup 4. The vacuum air path is an internal structure, with a clever design, and does not significantly increase the volume of the cylinder, and the overall weight is light.

[0071] More specifically, the rotation angle range of the middle air cylinder rod 21 is from 0° to 90°, and the two rotation limit states of the middle air cylinder rod 21 are the horizontal state and the vertical state respectively. During specific implementation, the rotation angle range of the middle air cylinder rod 21 is controlled by controlling the screw lift angle of the spiral drive groove 24111 and the stroke of the piston assembly 24.

[0072] According to the specific embodiments of the present utility model, the quick-change pneumatic rotary workpiece adsorption device 01 for a numerically controlled machine tool further includes an adapter plate 04 detachably fixed to the top of the cylinder block assembly 22; an adapter driving air path 041 and an adapter vacuum air path 042 are provided in the adapter plate 04. The two ends of the adapter driving air path 041 are respectively an adapter driving air inlet end 0411 and an adapter driving air outlet end 0412; the two ends of the adapter vacuum air path 042 are respectively an adapter vacuum air inlet end 0421 and an adapter vacuum air outlet end 0422; the adapter driving air inlet end 0411 is located at the top of the adapter plate 04 and is communicated with the shank driving air source connection outlet 113, and the adapter driving air outlet end 0412 is located at the bottom of the adapter plate 04 and is communicated with the cylinder driving air source connection inlet 2211; the adapter vacuum air inlet end 0421 is located at the top of the adapter plate 04 and is communicated with the shank vacuum air source connection outlet 114, and the adapter vacuum air outlet end 0422 is located at the bottom of the adapter plate 04 and is communicated with the cylinder vacuum air source connection inlet 2231; a shank threaded connection hole 112 is further provided at the bottom of the shank main body 011, and the shank threaded connection hole 112 is located between the shank driving air source connection outlet 113 and the shank vacuum air source connection outlet 114; the adapter plate 04 is rectangular, and a through upper connection hole 043 is provided at the center of the adapter plate 04, and a through lower connection hole 044 is provided at each of the four corners of the adapter plate 04; the top surface of the cylinder block assembly 22 is a rectangular plane matching the bottom surface of the adapter plate 04, and a cylinder top connection hole 2221 is provided at each of the four corners of the top surface of the cylinder block assembly 22; the quick-change pneumatic rotary workpiece adsorption device 01 for a numerically controlled machine tool further includes a first threaded connection member 05. By passing the first threaded connection member 05 through the upper connection hole 043 and extending it into the shank threaded connection hole 112, the fixed connection between the adapter plate 04 and the shank main body 011 is realized; the quick-change pneumatic rotary workpiece adsorption device 01 for a numerically controlled machine tool further includes a second threaded connection member 06. By passing the second threaded connection member 06 through the lower connection hole 044 and extending it into the cylinder top connection hole 2221, the fixed connection between the adapter plate 04 and the cylinder block assembly 22 is realized; the distance between the shank driving air source connection outlet 113 and the shank vacuum air source connection outlet 114 is P1, the distance between the adapter driving air inlet end 0411 and the adapter vacuum air inlet end 0421 is P2, and P1 = P2; the distance between the adapter driving air outlet end 0412 and the adapter vacuum air outlet end 0422 is P3, and the distance between the cylinder driving air source connection inlet 2211 and the cylinder vacuum air source connection inlet 2231 is P4, and P3 = P4; P4 > P1.

[0073] In this embodiment, the added adapter plate 04 can reduce the connection difficulty between the shank assembly 1 and the rotary cylinder 2. The "connection" between the shank assembly 1 and the rotary cylinder 2 includes "physical structure connection" and "air path connection".

[0074] (1) Regarding the physical structure connection.

[0075] If the adapter plate 04 is not provided, it is necessary to improve the structure of the tool holder body 011 or the cylinder block assembly 22 and add a connection structure. In this embodiment, the tool holder body 011 needs to simulate the existing tool holder structure to facilitate adaptation to the automatic tool changer, and it is not suitable to add a connection structure such as a flange below it; moreover, the cylinder block assembly 22 is a relatively closed cylinder structure. On the premise that the connection surface below the tool holder body 011 is small, if a connection hole or other structure is formed at the corresponding position above the cylinder block assembly 22, it is necessary to additionally add an entity structure for forming the connection hole at the top center of the cylinder block assembly 22, and it is also necessary to reserve a disassembly and assembly space for the threaded connection member, which will inevitably greatly increase the volume of the cylinder block assembly 22.

[0076] In this embodiment, after the adapter plate 04 is provided, the adapter plate 04 and the tool holder body 011 are connected by the first threaded connection member 05, and the adapter plate 04 and the cylinder block assembly 22 are connected by the second threaded connection member 06. Moreover, the first threaded connection member 05 is located at the center position of the adapter plate 04 and is exactly aligned with the tool holder body 011 above, and the second threaded connection member 06 is located at the four corners of the top surface of the cylinder block assembly 22, which will not affect the sealing performance of the cylinder cavity. Therefore, setting the adapter plate 04 effectively solves the connection problem between the tool holder assembly 1 and the rotary cylinder 2.

[0077] (2) Regarding the air circuit connection.

[0078] In this embodiment, the outer diameter value of the tool holder body 011 is smaller than the outer diameter value of the rotary cylinder 2, and the vacuum air source and the pressure air source need to enter from both sides of the cylinder cavity in the rotary cylinder 2. That is, in the case where P1 is less than P3, how to realize the connection of the air circuit between the tool holder body 011 and the rotary cylinder 2 is a technical problem that needs to be solved.

[0079] To solve the above technical problem, if the adapter plate 04 is not provided, it is necessary to add an external air pipe, which reduces the stability and integrity of the present utility model. Or, an air circuit for pressure gas and vacuum gas can also be formed in the upper solid part of the cylinder block assembly 22. To ensure strength, it is necessary to locally thicken the top of the cylinder block assembly 22 additionally, which increases the forming difficulty. Moreover, if the structure for realizing the connection of the solid structure in the above (1) part is also provided on this basis, it will inevitably lead to a complex and irregular upper structure of the cylinder block assembly 22.

[0080] In this embodiment, the air circuit between the tool holder assembly 1 and the cylinder block assembly 22 is connected through the adapter plate 04. The connection problem of the air circuit between the tool holder body 011 and the rotary cylinder 2 is effectively solved. Moreover, there is no need for an external connection air pipe, the structure is compact and stable, and the integrity is good. In addition, in this embodiment, the upper part of the cylinder block assembly 22 is a simple plane structure, the adapter plate 04 just fits the top surface plane of the cylinder block assembly 22, the upper part of the cylinder block assembly 22 is a regular rectangle, the structure is compact, the forming difficulty is small, and when in use, if the outside is adhered with water slag, it is more convenient to clean.

[0081] According to the specific embodiments of the present utility model, the cylinder barrel assembly 22 includes: a cylinder body 222, a front cover 221, and a rear cover 223. The cylinder body 222 is integrally in a cylindrical shape with both ends open; the front cover 221 and the rear cover 223 are respectively fixedly covered on the two open ends of the cylinder body 222 through third threaded connectors 07; a cylinder vacuum air source access port 2231 is provided on the top of the rear cover 223, and a cylinder vacuum air path 2232 is formed inside the rear cover 223; a cylinder driving air source access port 2211 is provided on the top of the front cover 221, and a cylinder driving air path 2212 is formed inside the rear cover 223; cylinder top connection holes 2221 are located at the four corners of the top surface of the cylinder body 222.

[0082] In this embodiment, the cylinder barrel assembly 22 is a split structure, which is convenient for split processing, reduces the processing difficulty, and is also convenient for the installation of internal components of the cylinder barrel assembly 22. The front cover 221 and the rear cover 223 are respectively located at both ends of the cylinder body 222, which is convenient for guiding the vacuum air source and the pressure air source to both sides of the cylinder body 222 respectively.

[0083] According to the specific embodiments of the present utility model, the piston assembly 24 includes a piston cylinder 241 and a piston disc 242. The piston cylinder 241 is integrally in a cylindrical shape, and a plug hole 2413 penetrates through the piston cylinder 241. The piston disc 242 divides the cylinder cavity into a pressure gas acting cavity and a spring acting cavity 224. The piston disc 242 is integrally in a disc shape fixedly surrounding the outer side of the piston cylinder 241, and the piston disc 242 divides the piston cylinder 241 into a left cylinder body 2411 and a right cylinder body 2412. A spiral driving groove 24111 is provided on the outer side wall of the left cylinder body 2411. A protruding plug slider 2414 is further provided at one end of the outer side wall of the left cylinder body 2411 away from the piston disc 242. A recessed cylinder linear sliding groove 2222 is provided on the inner wall of the cylinder body 222. Each plug slider 2414 extends into the cylinder linear sliding groove 2222 to realize the sliding connection between the piston assembly 24 and the cylinder barrel assembly 22; a recessed plug sealing ring groove 2421 is provided on the outer side of the piston disc 242, and a plug O-ring 5 is provided in the plug sealing ring groove 2421; the front cover 221 further includes a cover support ring 2213 extending into the cylinder cavity. The right cylinder body 2412 extends into the cover support ring 2213 and the two are slidably connected; a support ring inner wall sealing ring 6 is provided between the cover support ring 2213 and the outer side wall of the right cylinder body 2412; a support ring outer wall sealing ring 7 is provided between the cover support ring 2213 and the inner wall of the cylinder body 222; the cylinder driving air path 2212 includes a cylinder driving air source outlet 22121, and the cylinder driving air source outlet 22121 is located at one end of the cover support ring 2213 close to the piston disc 242, and the cylinder driving air source outlet 22121 is communicated with an air inlet groove 2422.

[0084] In this embodiment, the structures of the piston assembly 24 and the cylinder barrel assembly 22 are further designed.

[0085] First, the piston disc 242 is designed in a disc shape, and the outer sidewall of the piston disc 242 is closely attached to the inner wall of the cylinder cavity through the plug O-ring 5, so as to divide the cylinder cavity into a pressure gas acting cavity and a spring acting cavity 224. The piston cylinder 241 is used to form a plug hole 2413, the hollow cylinder rod 21 passes through the plug hole 2413 and is rotatably connected to the piston cylinder 241, the spiral drive groove 24111 on the outer sidewall of the left cylinder body 2411 cooperates with the driven block 213, and the plug slider 2414 extends into the cylinder linear sliding groove 2222 to realize the sliding connection between the piston assembly 24 and the cylinder barrel assembly 22. With the above structure, it provides a basis for realizing the conversion of the linear movement power of the piston assembly 24 into the rotational power of the hollow cylinder rod 21.

[0086] Secondly, there are three combined support and guiding structures in the rotary cylinder 2 of this embodiment. The first one is: the hollow cylinder rod 21 penetrates through the center of the piston assembly 24, and the hollow cylinder rod 21 provides support and sliding guidance for the piston assembly 24. The second one is: one side of the front cover 221 extends into the cylinder cavity to form a cover support ring 2213, and the cover support ring 2213 can accommodate and support the right cylinder body 2412, and the two are slidably connected, providing sliding support for the right side of the piston assembly 24; The third one is: a protruding plug slider 2414 is provided at the leftmost end of the piston assembly 24 (the end of the outer sidewall of the left cylinder body 2411 far from the piston disc 242), and the plug slider 2414 extends into the cylinder linear sliding groove 2222 to form a sliding connection, that is, this structure provides sliding guidance for the left side of the piston assembly 24, and this structure can also limit the rotation of the piston assembly 24. These three structures provide radial support, limit and guidance for the piston assembly 24 from the center, left and right ends of the piston assembly 24, ensuring that the piston assembly 24 slides linearly accurately and smoothly.

[0087] Thirdly, it should be noted that in addition to the function of supporting the piston assembly 24, part of the cylinder drive gas path 2212 is formed inside the cover support ring 2213 extending into the cylinder cavity, and the cylinder drive gas source outlet 22121 is arranged thereon, and this structure can smoothly introduce the pressure gas into the cylinder cavity.

[0088] In this embodiment, there are sealing rings in all the sealing grooves. The sealing rings are used for gas path sealing. On the one hand, it can prevent air leakage in the cylinder cavity. On the other hand, it can also prevent external cutting fluid, dust and water vapor from entering the quick-change pneumatic rotary workpiece adsorption device 01 for numerical control machine tools, which is beneficial to improving the overall protection level of the utility model.

[0089] According to the specific embodiments of the present utility model, the hollow cylinder rod 21 includes a cylinder rod main body 211 and an annular pressing disc 212. The cylinder rod main body 211 is integrally a circular tubular shape. The two ends of the cylinder rod main body 211 are respectively an inner rod section 2111 and an outer rod section 2112. The annular pressing disc 212 is fixedly arranged around the outer side wall of the inner rod section 2111. The cylinder rod main body 211 penetrates through the front cover 221, and the cylinder rod main body 211 is rotatably connected with the front cover 221. A cover sealing ring 8 is arranged between the cylinder rod main body 211 and the front cover 221. On one side surface of the rear cover 223 close to the cylinder block 222, there is a recessed pressing disc receiving groove 2233. The annular pressing disc 212 is completely received in the pressing disc receiving groove 2233. The joint surface between the cylinder block 222 and the rear cover 223 is a plane, and the cylinder block 222 covers the edge of the notch of the pressing disc receiving groove 2233 to prevent the annular pressing disc 212 from disengaging from the pressing disc receiving groove 2233. On the outer side wall of the outer rod section 2112, there are respectively provided: a rod communication hole 21121, a rod torque transmission plane 21122, and a rod sealing ring groove 21123. The hollow suction cup rotating arm 3 includes a rotating arm sleeve 31 and a rotating arm main pipe 32 vertically fixed on one side of the rotating arm sleeve 31. The end of the rotating arm main pipe 32 far from the rotating arm sleeve 31 is connected with the material suction cup 4. The inner wall of the rotating arm sleeve 31 is provided with a pipe torque transmission plane for cooperating with the rod torque transmission plane 21122. The rotating arm sleeve 31 is integrally a tubular shape coaxial with the cylinder rod main body 211, and one end of the rotating arm sleeve 31 has a pipe sealing plate 311. The rotating arm main pipe 32 is integrally a square tubular shape. The rotating arm sleeve 31 is sleeved on the outer rod section 2112, and the pipe sealing plate 311 abuts against the outer end surface of the outer rod section 2112, and the rod torque transmission plane 21122 is in contact with the pipe torque transmission plane, which is used for the quick-change pneumatic rotary workpiece adsorption device 01 of a numerical control machine tool. The quick-change pneumatic rotary workpiece adsorption device 01 of a numerical control machine tool further includes a locking and sealing nut 08. The locking and sealing nut 08 penetrates through the pipe sealing plate 311 and is threadedly connected with the outer rod section 2112. There is a nut O-ring 9 between the locking and sealing nut 08 and the pipe sealing plate 311. A rod O-ring 10 is arranged in the rod sealing ring groove 21123. The rod communication hole 21121 is located between the nut O-ring 9 and the rod O-ring 10.

[0090] In this embodiment, it specifically relates to: the fitting structures between the hollow cylinder rod 21 and the front cover 221, the rear cover 223, and the hollow suction cup rotating arm 3 respectively. And the structures of the hollow cylinder rod 21, the rear cover 223, and the hollow suction cup rotating arm 3 are specifically designed. The working principles and beneficial effects of each component and the structure between components are specifically described below.

[0091] Regarding the implementation structure for the rotation of the hollow cylinder rod 21 and the cylinder barrel assembly 22. In this embodiment, the left end of the cylinder rod body 211 is fitted with an annular pressing plate 212 into the pressing plate receiving groove 2233, and under the limiting effect of the cylinder block 222, a structure is formed in which the left end of the cylinder rod body 211 is rotationally connected to the cylinder barrel assembly 22. This structure makes full use of the advantage that the cylinder barrel assembly 22 is a split structure. With the side limiting of the cylinder block 222, after assembly, a rotational connection structure can be directly formed without additionally setting components for forming the rotational connection. The right end of the cylinder rod body 211 is rotationally connected to the front cover 221. Combining with the structure in which the left end of the cylinder rod body 211 is rotationally connected to the cylinder barrel assembly 22, a stable structure in which the hollow cylinder rod 21 is rotationally connected to the cylinder barrel assembly 22 can be formed.

[0092] Regarding the implementation structure for the connection of the hollow cylinder rod 21 and the hollow suction cup rotating arm 3. In this embodiment, the connection structure between the hollow cylinder rod 21 and the hollow suction cup rotating arm 3 includes the internal air path connection of components and the fixed connection of component entities. The rod communication hole 21121 is used to connect the cylinder rod body 211 and the rotating arm main pipe 32. The rod communication hole 21121 is arranged between the nut O-ring 9 and the rod O-ring 10, which is convenient for ensuring the sealing performance at the air path connection between the cylinder rod body 211 and the rotating arm main pipe 32. The rod torque transmission plane 21122 cooperates with the pipe torque transmission plane to transmit the torque of the cylinder rod body 211 to the hollow suction cup rotating arm 3. The rotating arm main pipe 32 is threadedly connected to the material suction cup 4, and the interiors of the two are connected to form an air path extending to the material suction cup 4. The rotating arm sleeve 31 is used to be fixedly connected to the cylinder rod body 211. The pipe sealing plate 311 is used for limiting during the installation of the rotating arm sleeve 31, which is convenient for installation. The pipe sealing plate 311 also plays a positioning role to ensure that the rod communication hole 21121 can be exactly aligned and connected with the rotating arm main pipe 32. The pipe sealing plate 311 also plays a role in improving the connection stability. Specifically, after the locking and sealing nut 08 is installed, the locking and sealing nut 08 presses the pipe sealing plate 311 and is connected to the cylinder rod body 211. Therefore, the connection stability between the hollow suction cup rotating arm 3 and the hollow cylinder rod 21 can be further enhanced. The rotating arm sleeve 31 is set to be coaxial with the cylinder rod body 211, and the nut O-ring 9 is sleeved before installing the locking and sealing nut 08. After installation, in addition to the aforementioned connection function, the locking and sealing nut 08 can exactly seal and block the right end outlet of the cylinder rod body 211, achieving the effect of blocking the air passage process hole, eliminating the plug for blocking the process hole here, and streamlining the structure.

[0093] In addition, the entire rotating arm main pipe 32 is a square tube, which can increase the connection area between the rotating arm main pipe 32 and the rotating arm sleeve 31 and ensure the connection strength between the rotating arm main pipe 32 and the rotating arm sleeve 31.

[0094] According to the specific embodiments of the present utility model, there are two relatively arranged rod torque transmission planes 21122, and the rod torque transmission planes 21122 are located on the side of the rod O-ring 10 away from the nut O-ring 9. The quick-change pneumatic rotary workpiece adsorption device 01 for a numerical control machine tool further includes two locking screws 09, and the two locking screws 09 respectively penetrate through the swivel arm sleeve 31 and respectively abut against the two rod torque transmission planes 21122; the cylinder rod main body 211 and the annular pressing disc 212 are of an integrally formed structure; the inner diameter of the annular pressing disc 212 is larger than the inner diameter of the cylinder rod main body 211, the inner wall of the pressing disc receiving groove 2233 extends into the inner wall of the annular pressing disc 212, and the inner wall of the pressing disc receiving groove 2233 is fitted with the inner wall of the annular pressing disc 212, and a plug disc O-ring 11 is provided between the inner wall of the pressing disc receiving groove 2233 and the inner wall of the annular pressing disc 212.

[0095] In this embodiment, the two rod torque transmission planes 21122 can transmit greater torque. The two rod torque transmission planes 21122 are relatively arranged and locked by the locking screws 09, and can be locked from opposite directions, ensuring the coaxiality of the swivel arm sleeve 31 and the cylinder rod main body 211, and further enhancing the connection stability between the hollow suction cup swivel arm 3 and the hollow cylinder rod 21.

[0096] The integral molding of the cylinder rod main body 211 and the annular pressing disc 212 is beneficial to the stable and sealed connection between the two, and has a small volume and a compact structure. The plug disc O-ring 11 is used to ensure the airtightness at the joint of the hollow cylinder rod 21 and the rear cover 223. The inner diameter of the annular pressing disc 212 is larger than the inner diameter of the piston cylinder 241, so that the inner wall of the pressing disc receiving groove 2233 just extends into the inner wall of the annular pressing disc 212. The inner wall of the pressing disc receiving groove 2233 can position the hollow cylinder rod 21. When the hollow cylinder rod 21 rotates, its rotation center is always concentric with the pressing disc receiving groove 2233, ensuring the accuracy of the rotation movement of the hollow cylinder rod 21.

[0097] According to the specific embodiments of the present utility model, on one side of the cylinder block 222 close to the rear cover 223, there is also a spring seat 2223 which is integrally cylindrical and annular. The part of the compression return spring 23 close to the rear cover 223 is sleeved on the spring seat 2223. The inner wall of the spring seat 2223 is slidably connected to the piston cylinder 241. The cylinder linear chute 2222 is arranged on the inner wall of the spring seat 2223 and is recessed from the inner wall of the spring seat 2223. The number of the cylinder linear chutes 2222 is two, and the two cylinder linear chutes 2222 are arranged oppositely. The number of the piston sliders 2414 is two, and one piston slider 2414 is arranged in each cylinder linear chute 2222. The side wall of the cylinder block 222 is provided with a piston left limit step 2224 for limiting the piston disc 242. The end face of the cover support ring 2213 close to the rear cover 223 is a piston right limit surface 22131. The end face of the piston disc 242 far from the left cylinder 2411 is provided with a recessed air inlet groove 2422.

[0098] In this embodiment, the structure of the cylinder block 222 is designed more specifically. The spring seat 2223 combines multiple functions. First, by forming the cylinder linear chute 2222 on the inner wall of the spring seat 2223, the function of the sliding connection between the piston assembly 24 and the cylinder barrel assembly 22 is realized, and the rotational freedom of the piston assembly 24 is restricted. Second, the outer side wall of the spring seat 2223 can also provide an installation and positioning basis for the compression return spring 23 to ensure the stability of the position of the compression return spring 23. Third, the inner wall of the spring seat 2223 is slidably connected to the piston cylinder 241, which can further ensure the sliding stability and sliding accuracy of the piston cylinder 241. The two oppositely arranged cylinder linear chutes 2222 and the two piston sliders 2414 are used in cooperation to improve the uniformity of the force and facilitate ensuring the smoothness of the sliding of the piston sliders 2414. The piston left limit step 2224 and the piston right limit surface 22131 respectively limit the left and right movements of the piston disc 242 and are used to accurately control the stroke of the piston disc 242.

[0099] As can be seen from the above, the design of the cylinder block 222 in this embodiment is ingenious and reasonable, and at the same time realizes: the anti-rotation function of the piston assembly 24, the sliding guiding function of the piston assembly 24, and the stable installation function of the compression return spring 23.

[0100] On this basis, by providing the recessed air inlet groove 2422 and connecting the cylinder drive air source outlet 22121 with the air inlet groove 2422, it can ensure that the pressure gas smoothly enters the pressure gas acting chamber and pushes the piston disc 242 to move.

[0101] According to the specific embodiments of the present utility model, the number of the spiral drive grooves 24111 is two. The two spiral drive grooves 24111 are uniformly arranged around the central axis of the piston cylinder 241, and the spiral drive grooves 24111 and the plug sliders 2414 are arranged alternately; the number of the driven blocks 213 is two, and one driven block 213 is arranged in each spiral drive groove 24111.

[0102] In this embodiment, the number and positions of the spiral drive grooves 24111 and the plug sliders 2414 are specifically defined. The plug slider 2414 is located at one end of the outer side wall of the left cylinder 2411 away from the piston disc 242, and the notch of the spiral drive groove 24111 is also located here. The length of the plug slider 2414 is shorter than that of the spiral drive groove 24111. Therefore, adopting this structure can ensure that the spiral drive groove 24111 will not interfere with the plug slider 2414 after extending along its spiral line.

[0103] The spiral drive grooves 24111 will reduce the strength of the piston cylinder 241, while the plug sliders 2414 will increase the strength of the piston cylinder 241. The two spiral drive grooves 24111 and the two plug sliders 2414 are evenly distributed along the central axis of the piston cylinder 241, which can ensure the uniformity of the intervals between the spiral drive grooves 24111 and ensure the overall strength of the piston cylinder 241.

[0104] In this embodiment, the drive structure (spiral drive groove 24111) and the guiding structure (plug slider 2414) are also arranged alternately, which can ensure smooth and balanced force application and further improve the smoothness of the movement.

[0105] As can be seen from the above, in the rotary cylinder 2 of the present utility model, each component cooperates with each other in terms of structure and function. For example, the rear cover 223 and the cylinder block 222 cooperate with each other in terms of structure and function, and the front cover 221 and the cylinder block 222 cooperate with each other in terms of structure and function. Finally, the rotary cylinder 2 has the advantages of small volume, delicate design, smooth movement, etc.

[0106] According to the specific embodiments of the present utility model, the handle true air source access port 122 is provided with a recessed handle seal ring groove 123, and a handle O-ring 12 is arranged in the handle seal ring groove 123. The handle drive air source access port 121 is provided with a direct air vent joint 14. The upper part of the direct air vent joint 14 is a convex cone shape, the lower part of the direct air vent joint 14 is fixedly clamped to the inner wall of the handle drive air source access port 121, and a joint O-ring 13 is arranged around the upper part of the direct air vent joint 14.

[0107] During specific implementation, a seat sealing cone 023 matching the lower end of the straight-through air passage connector 14 is provided at the lower opening of the seat driving air source air circuit 021; when the utility model is in the state of installing the spindle: the handle O-ring 12 abuts against the lower surface of the air circuit block 012; the upper part of the straight-through air passage connector 14 extends into the seat driving air source air circuit 021, and the connector O-ring 13 abuts against the outer side wall of the straight-through air passage connector 14 and the seat sealing cone 023 respectively; a seat connecting hole 024 is provided at the position of the air source seat 02 corresponding to the shaft seat screw interface 032, and the seat connecting hole 024 is staggered above the air circuit block 012; the bottom of the spindle seat 03 also includes a plurality of shaft seat screw interfaces 032 arranged around the tool handle interface 031. When the air source seat 02 is installed, the seat threaded connector 010 passes through the seat connecting hole 024 and extends into the shaft seat screw interface 032, so as to realize the fixed connection between the air source seat 02 and the spindle seat 03.

[0108] In this embodiment, the handle O-ring 12 is used to ensure the sealing of the handle vacuum air source inlet 122 between the air source seat 02 and the air circuit block 012 when the air source seat 02 and the quick-change pneumatic rotary workpiece adsorption device 01 for CNC machine tools are connected. The straight-through air-passing joint 14 is used in conjunction with the seat sealing cone 023, which has two functions. First, the upper part of the straight-through air-passing joint 14 is convexly arranged, and its upper part is conical. When the air source seat 02 and the quick-change pneumatic rotary workpiece adsorption device 01 for CNC machine tools are connected, the upper part of the straight-through air-passing joint 14 is first inserted into the seat sealing cone 023, which plays a certain guiding role. Second, the upper part of the straight-through air-passing joint 14 is provided with a joint O-ring 13. After the upper part of the straight-through air-passing joint 14 is inserted into the seat sealing cone 023, the joint O-ring 13 can ensure the sealing of the driving air circuit there.

[0109] As can be seen from the above, through the structure of this embodiment, the utility model can be quickly connected with the air source seat 02, and the effective sealing of the air path between the air source seat 02 and the air path block 012 after the air path is connected can be guaranteed. By adopting this structure, after the utility model is separated from the air source seat 02 and installed on the tool magazine guide sleeve, the handle O-ring 12 is still located in the handle sealing ring groove 123, and the straight air connection 14 and the connection O-ring 13 are still connected to the air path block 012, which does not affect the next connection, and is further conducive to the smooth implementation of the utility model.

[0110] According to a specific embodiment of the present invention, the gas circuit block 012 is rectangular as a whole, and two short sides of the gas circuit block 012 have arc-shaped protrusions 124 .

[0111] In this embodiment, the two short sides in the length direction of the air passage block 012 are matched with the shape of the air source base 02 through the structure of the arc-shaped protrusion 124. On the one hand, it is beneficial to extend the length of the air passage in the air passage block 012, so that the air passage in the air passage block 012 has the same length as the air passage in the lower air source base 02, which is conducive to the transfer of the air passage after the upper and lower docking of the air passage block 012 and the air source base 02. On the other hand, with this structure, the two ends of the air passage block 012 are flush with the outer side surface of the air source base 02, avoiding an exposed step structure at this place, which is conducive to reducing the accumulation of external dust and slag.

[0112] According to the specific embodiment of the present invention, an air inlet and outlet hole 2225 communicating with the spring action cavity 224 is further provided on the side wall of the cylinder block 222. The air inlet and outlet hole 2225 is used to adaptively discharge or inhale gas when the volume of the spring action cavity 224 changes.

[0113] As can be seen from the above, in addition to being able to be installed on the spindle base 03 and having the function of adsorption and rotation, the present invention also has the advantages of reasonable overall design, small volume and light weight, which provides favorable conditions for being loaded on the tool magazine and the spindle base 03. The structure of the tool holder assembly 1 in the present invention can be quickly docked with the spindle base 03, and the structure of the tool holder assembly 1 can also be quickly docked with the air source base 02, and can ensure the airtightness of the docking place, guiding the pressure air source and the vacuum air source from the air source base 02 to the rotary cylinder 2 through the adapter plate 04, which is convenient to use. Sealing rings are provided at the air passage connection parts of the components of the present invention, which can ensure the protection level of the present invention, so that the present invention can be applied to scenarios with cutting fluid and cutting dust.

[0114] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium. It can be the communication inside two components, or a "transmission connection", that is, power connection is carried out through various suitable methods such as belt drive, gear drive or sprocket drive. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Claims

1. A quick-change pneumatic rotary workpiece adsorption device for a CNC machine tool, characterized in that: include: A tool handle assembly, a rotating cylinder, a hollow suction cup rotating arm and a material suction cup; the tool handle assembly comprises a tool handle body and an air circuit block which are cross-fixed and arranged, the top two ends of the air circuit block are respectively provided with a handle driving air source access port and a handle vacuum air source access port, the bottom of the tool handle body is respectively provided with: a handle driving air source access port connected to the handle driving air source access port, and a handle vacuum air source access port connected to the handle vacuum air source access port; the rotating cylinder is detachably fixed to the bottom of the tool handle body, and the rotating cylinder comprises: a cylinder driving air source access port, a cylinder vacuum air source access port and a hollow cylinder rod; The two ends of the hollow suction cup rotating arm are respectively fixed to the hollow cylinder rod and the material suction cup; the cylinder driving air source inlet is connected to the handle driving air source inlet, and is used to introduce pressurized gas into the interior of the rotating cylinder to drive the hollow cylinder rod, the hollow suction cup rotating arm and the material suction cup to rotate as a whole; the two ends of the hollow cylinder rod are respectively connected to the handle vacuum air source inlet and the interior of the hollow suction cup rotating arm, and are used to introduce negative pressure to provide vacuum suction for the material suction cup.

2. The quick-change pneumatic rotary workpiece adsorption device for CNC machine tools according to claim 1, characterized in that: The outer side of the tool handle body is also provided with an insertion groove, and the insertion groove is located below the gas circuit block; the tool handle body is columnar as a whole, and the gas circuit block is plate-shaped as a whole; and the tool handle body and the gas circuit block are an integrated structure.

3. The quick-change pneumatic rotary workpiece adsorption device for CNC machine tools according to claim 2, characterized in that: The rotary cylinder also includes: a cylinder assembly, a compression return spring and a piston assembly; a cylinder cavity is provided in the cylinder assembly, and the two ends of the hollow cylinder rod are respectively an inner rod section and an outer rod section, the inner rod section is located in the cylinder cavity, the outer rod section extends out of the cylinder assembly and is connected to the hollow suction cup rotating arm, and the hollow cylinder rod is rotatably connected to the cylinder assembly; the piston assembly is arranged in the cylinder cavity, and the piston assembly divides the cylinder cavity into a pressure gas action chamber and a spring action chamber, and the piston assembly is slidably connected to the cylinder assembly; the piston assembly is provided with a plug hole running through it axially, and the outer side wall of the piston assembly is provided with a recessed spiral drive groove, and the hollow cylinder The rod passes through the plug hole, and the outer side of the hollow cylinder rod is also provided with a driven block which is protruding and extends into the spiral drive groove, and the driven block is slidably connected to the spiral drive groove; the cylinder drive air source access port and the cylinder vacuum air source access port are respectively arranged on both sides of the top of the cylinder assembly; the cylinder assembly also includes a cylinder drive air circuit and a cylinder vacuum air circuit formed therein; the two ends of the cylinder vacuum air circuit are respectively connected to the cylinder vacuum air source access port and the inner section of the rod, and the two ends of the cylinder drive air circuit are respectively connected to the cylinder drive air source access port and the pressure gas action chamber; the compression return spring is located in the spring action chamber; the rotation angle range of the hollow cylinder rod is 0° to 100°.

4. The quick-change pneumatic rotary workpiece adsorption device for CNC machine tools according to claim 3, characterized in that: The quick-change pneumatic rotary workpiece adsorption device for a CNC machine tool further comprises an adapter plate detachably fixed to the top of the cylinder assembly; a transfer drive air path and a transfer vacuum air path are arranged in the adapter plate, and the two ends of the transfer drive air path are a transfer drive air inlet end and a transfer drive air outlet end respectively; The two ends of the transfer vacuum air path are respectively a transfer vacuum air inlet end and a transfer vacuum air outlet end; The adapter drive air inlet end is located at the top of the adapter plate and is connected to the handle drive air source access port, and the adapter drive air outlet end is located at the bottom of the adapter plate and is connected to the cylinder drive air source access port; the adapter vacuum air inlet end is located at the top of the adapter plate and is connected to the handle vacuum air source access port, and the adapter vacuum air outlet end is located at the bottom of the adapter plate and is connected to the cylinder vacuum air source access port; the bottom of the tool handle body is also provided with a handle threaded connection hole, and the handle threaded connection hole is located between the handle drive air source access port and the handle vacuum air source access port; the adapter plate is rectangular, and an adapter upper connection hole is provided through it at the center of the adapter plate, and a adapter lower connection hole is provided through it at each of the four corners of the adapter plate; the top surface of the cylinder assembly is a rectangular plane matching the bottom surface of the adapter plate, and a cylinder top connection hole is provided at each of the four corners of the top surface of the cylinder assembly; the tool handle The quick-change pneumatic rotary workpiece adsorption device for CNC machine tools also includes a first threaded connector, which passes through the upper adapter connection hole and extends into the handle threaded connection hole to achieve fixed connection between the adapter plate and the tool handle body; the quick-change pneumatic rotary workpiece adsorption device for CNC machine tools also includes a second threaded connector, which passes through the lower adapter connection hole and extends into the cylinder top connection hole to achieve fixed connection between the adapter plate and the cylinder assembly; the distance between the handle drive air source connection port and the handle vacuum air source connection port is P1, the distance between the adapter drive air inlet end and the adapter vacuum air inlet end is P2, P1=P2; the distance between the adapter drive air outlet end and the adapter vacuum air outlet end is P3, the distance between the cylinder drive air source connection port and the cylinder vacuum air source connection port is P4, P3=P4; P4>P1.

5. The quick-change pneumatic rotary workpiece adsorption device for CNC machine tools according to claim 4, characterized in that: The cylinder assembly includes: a cylinder body, a front cover and a rear cover, the cylinder body as a whole is a cylinder with openings at both ends; the front cover and the rear cover are respectively fixed to the two open ends of the cylinder body by third threaded connectors; the cylinder vacuum air source access port is arranged at the top of the rear cover, and the cylinder vacuum air circuit is formed in the rear cover; the cylinder drive air source access port is arranged at the top of the front cover, and the cylinder drive air circuit is formed in the rear cover; the cylinder top connection holes are located at the four corners of the top surface of the cylinder body.

6. The quick-change pneumatic rotary workpiece adsorption device for CNC machine tools according to claim 5, characterized in that: The piston assembly includes a piston cylinder and a piston disc. The piston cylinder is cylindrical as a whole. The plug hole runs through the piston cylinder. The piston disc divides the cylinder cavity into the pressure gas action chamber and the spring action chamber. The piston disc is a disc-shaped disc fixedly surrounding the outside of the piston cylinder as a whole, and the piston disc divides the piston cylinder into a left cylinder body and a right cylinder body. The spiral drive groove is arranged on the outer wall of the left cylinder body. A protruding plug slider is also arranged at the end of the outer wall of the left cylinder body away from the piston disc. A recessed cylinder linear slide groove is arranged on the inner wall of the cylinder body. Each of the plug sliders extends into the cylinder linear slide groove to realize sliding contact between the piston assembly and the cylinder barrel assembly. connected; a recessed plug sealing ring groove is provided on the outer side of the piston disc, and a plug O-ring is provided in the plug sealing ring groove; the front cover also includes a cover support ring extending into the cylinder cavity, and the right cylinder body extends into the cover support ring, and the two are slidably connected; a support ring inner wall sealing ring is provided between the cover support ring and the outer wall of the right cylinder body; a support ring outer wall sealing ring is provided between the cover support ring and the inner wall of the cylinder body; a recessed air inlet groove is provided on the end face of the piston disc away from the left cylinder body; the cylinder drive air circuit includes a cylinder drive air source outlet, the cylinder drive air source outlet is located at one end of the cover support ring close to the piston disc, and the cylinder drive air source outlet is connected to the air inlet groove.

7. The quick-change pneumatic rotary workpiece adsorption device for CNC machine tools according to claim 6, characterized in that: The hollow cylinder rod comprises a cylinder rod body and an annular pressure plate, the cylinder rod body being a circular tubular as a whole, the two ends of the cylinder rod body being respectively the inner section of the rod and the outer section of the rod, the annular pressure plate fixing ring being arranged on the outer side wall of the inner section of the rod; the cylinder rod body passes through the front cover, and the cylinder rod body is rotatably connected to the front cover, and a cover sealing ring is arranged between the cylinder rod body and the front cover; a recessed pressure plate receiving groove is arranged on a side surface of the rear cover close to the cylinder body, the annular pressure plate is completely received in the pressure plate receiving groove, the joint surface of the cylinder body and the rear cover is a plane, and the cylinder body covers the notch edge of the pressure plate receiving groove to limit the annular pressure plate from escaping from the pressure plate receiving groove; the outer side wall of the outer section of the rod is respectively provided with: a rod connecting hole, a rod torque transmission plane and a rod sealing ring groove; the hollow suction cup swivel arm comprises a swivel arm sleeve and a swivel arm vertically fixed to one side of the swivel arm sleeve The arm main pipe, one end of the arm main pipe away from the arm sleeve is connected to the material suction cup; the inner wall of the arm sleeve is provided with a tube torque transmission plane used in conjunction with the rod torque transmission plane, the arm sleeve as a whole is tubular coaxial with the cylinder rod body, and one end of the arm sleeve is provided with a tube sealing plate; the arm main pipe as a whole is square tubular, the arm sleeve is sleeved on the rod outer section, and the tube sealing plate abuts against the outer end surface of the rod outer section, and the rod torque transmission plane is in contact with the tube torque transmission plane, the quick-change pneumatic rotary workpiece adsorption device for CNC machine tools also includes a locking sealing nut, the locking sealing nut passes through the tube sealing plate and is threadedly connected to the rod outer section, a nut O-ring is provided between the locking sealing nut and the tube sealing plate, the rod sealing ring groove is provided with a rod O-ring, and the rod connecting hole is located between the nut O-ring and the rod O-ring.

8. The quick-change pneumatic rotary workpiece adsorption device for CNC machine tools according to claim 7, characterized in that: The rod torque transmission planes are two oppositely arranged, and the rod torque transmission planes are located on the side of the rod O-ring away from the nut O-ring. The quick-change pneumatic rotary workpiece adsorption device for CNC machine tools also includes two locking screws, and the two locking screws respectively penetrate the swing arm sleeve and respectively abut the two rod torque transmission planes; the cylinder rod body and the annular pressure plate are an integrally formed structure; the inner diameter of the annular pressure plate is larger than the inner diameter of the cylinder rod body, the inner wall of the pressure plate receiving groove extends into the inner wall of the annular pressure plate, and the inner wall of the pressure plate receiving groove is in contact with the inner wall of the annular pressure plate, and a plug disc O-ring is provided between the inner wall of the pressure plate receiving groove and the inner wall of the annular pressure plate.

9. The quick-change pneumatic rotary workpiece adsorption device for CNC machine tools according to claim 8, characterized in that: A spring seat which is an integral cylindrical ring is also provided on one side of the cylinder body near the rear cover, and the part of the compression return spring near the rear cover is sleeved on the spring seat; the inner wall of the spring seat is slidably connected to the piston cylinder, the cylinder linear slide groove is provided on the inner wall of the spring seat, and the cylinder linear slide groove is formed by the depression of the inner wall of the spring seat; the number of the cylinder linear slide grooves is two, and the two cylinder linear slide grooves are arranged opposite to each other, the number of the plug sliders is two, and each cylinder linear slide groove is provided with a plug slider; the side wall of the cylinder body is provided with a piston left limiting step for limiting the position of the piston disc, and the end face of the cover support ring near the rear cover is the piston right limiting face; the number of the spiral drive grooves is two, and the two spiral drive grooves are evenly arranged around the central axis of the piston cylinder, and the spiral drive grooves and the plug slider are arranged alternately; the number of the driven blocks is two, and each of the spiral drive grooves is provided with a driven block.

10. The quick-change pneumatic rotary workpiece adsorption device for CNC machine tools according to claim 9, characterized in that: The handle vacuum air source access port is provided with a recessed handle sealing ring groove, a handle O-ring is provided in the handle sealing ring groove, a straight air connection joint is provided at the handle drive air source access port, the upper portion of the straight air connection joint is a raised cone, the lower portion of the straight air connection joint is fixedly clamped to the inner wall of the handle drive air source access port, a joint O-ring is provided around the upper portion of the straight air connection joint, the air circuit block is rectangular as a whole, and the two short sides of the air circuit block have arc-shaped protrusions.

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