Machining die

Abstract

The utility model discloses a machining die, and relates to the technical field of dies, the machining die comprises a lower die, an upper die and a stripping block, the lower die bears materials; the upper mold and the lower mold are matched in a mold closing direction, and the upper mold comprises a machining part used for machining materials in the mold closing direction; the stripping block is inserted into the side, facing the lower die, of the upper die, a stripping hole allowing a machined part to movably penetrate through is formed in the stripping block, and a spiral groove which extends in the die assembly direction and is used for containing lubricating liquid is formed in the inner wall of the stripping hole; a conveying channel communicating with the stripping hole is formed in the upper die and used for introducing lubricating liquid and / or gas into the stripping hole so that the lubricating liquid in the stripping hole can be discharged along the spiral groove. When the machining die is opened, the conveying channel introduces lubricating liquid and / or gas into the stripping hole and enables the lubricating liquid in the spiral groove to clean the machined part and the stripping hole, so that the machined part and the stripping hole can be effectively prevented from being damaged by chippings adhered to the machined part, the machining precision of the machining die is improved, and the service life of the machining die is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of molds, and particularly to a processing mold. Background Art

[0002] Currently, processing molds such as blanking molds and stamping molds all have workpieces and knockout holes. When the processing mold processes materials, the workpiece passes through the knockout hole to process the materials and form structural features such as punching holes in the materials. However, when the materials are made of easily adherent materials such as aluminum and copper, due to the large amount of frictional heat generated between the workpiece and the knockout hole, the debris formed by the workpiece processing the materials is easily adhered to the workpiece, thus causing damage to the workpiece and the knockout hole when the workpiece enters the knockout hole, and further affecting the processing accuracy and service life of the processing mold. Summary of the Utility Model

[0003] In view of the above, it is necessary to provide a processing mold to improve the processing accuracy and service life.

[0004] An embodiment of this application provides a processing mold, including a lower mold, an upper mold and a knockout block. The lower mold is used to carry materials; the upper mold is adapted to the lower mold for closing the mold along the mold closing direction, and the upper mold includes a workpiece for processing materials along the mold closing direction; the knockout block is inserted on one side of the upper mold facing the lower mold, and the knockout block is provided with a knockout hole for the workpiece to movably pass through. A spiral groove for receiving lubricating fluid is provided on the inner wall of the knockout hole and extends along the mold closing direction; a conveying channel communicating with the knockout hole is provided in the upper mold, and the conveying channel is used to introduce lubricating fluid and / or gas into the knockout hole so that the lubricating fluid in the knockout hole is discharged along the spiral groove.

[0005] The processing mold of the embodiment of this application is provided with a knockout hole for the workpiece to movably pass through in the knockout block, a spiral groove for receiving lubricating fluid is provided on the inner wall of the knockout hole, and a conveying channel communicating with the knockout hole and used to introduce lubricating fluid and / or gas into the knockout hole is provided in the upper mold. When the upper mold and the lower mold are opened, the workpiece returns through the knockout hole, and the conveying channel simultaneously introduces lubricating fluid and / or gas into the knockout hole. The lubricating fluid in the spiral groove cleans the workpiece and the knockout hole under the pressure of the lubricating fluid and / or gas introduced into the knockout hole by the conveying channel, and takes the peeled debris out of the knockout hole along the spiral groove, thus effectively avoiding the damage to the workpiece and the knockout hole caused by the debris adhered to the workpiece, and further improving the processing accuracy and service life of the processing mold. In addition, the lubricating fluid in the spiral groove can also reduce the friction between the workpiece and the knockout hole and can cool the workpiece, thus being beneficial to reducing the number of debris adhered to the workpiece, and further being beneficial to improving the processing accuracy and service life of the processing mold.

[0006] In some embodiments, the upper mold further includes a stripping supporting plate, a stripping back plate and a pad. The stripping back plate is arranged on the side of the stripping supporting plate facing away from the lower mold. The side of the stripping supporting plate facing the lower mold is provided with a mounting groove extending to the stripping back plate. The pad is arranged in the mounting groove and abuts against the stripping back plate. The stripping block is arranged in the mounting groove and is located on the side of the pad facing the lower mold. The workpiece is passed through the stripping back plate and the pad and is arranged opposite to the stripping hole. The conveying channel is opened in the stripping back plate and the pad.

[0007] In some embodiments, the delivery channel includes an oil and gas passage, a receiving chamber, an oil delivery port and an air delivery port. The receiving chamber is opened on the stripping back plate, the oil and gas passage is opened on the pad, and the two ends of the oil and gas passage are respectively connected with the receiving chamber and the stripping hole. The oil delivery port and the air delivery port are both opened on the stripping back plate, and the oil delivery port and the air delivery port are both connected with the receiving chamber. The oil delivery port is used to input lubricating liquid into the receiving chamber, and the air delivery port is used to deliver gas to the receiving chamber to increase the pressure in the receiving chamber, so that the lubricating liquid and gas pass through the receiving chamber and the oil and gas passage into the spiral groove.

[0008] In some embodiments, the upper mold further includes a first control valve and a second control valve, the first control valve being arranged at the oil delivery port, and the second control valve being arranged at the air delivery port, the first control valve and the second control valve being used to control the alternating opening and closing of the oil delivery port and the air delivery port.

[0009] In some embodiments, the upper mold further includes an upper pad, an upper clamp and a clamp insert, the upper clamp is movably arranged on the side of the stripping back plate away from the stripping carrying plate, and the upper clamp can approach or move away from the stripping back plate along the mold closing direction, a slot is provided on the side of the stripping back plate facing the upper clamp, the clamp insert is inserted on the side of the upper clamp facing the stripping back plate, and the end of the clamp insert away from the upper clamp extends into the slot, the upper pad is arranged on the side of the upper clamp away from the stripping back plate, and the end of the workpiece away from the lower mold is inserted into the clamp insert, so that the workpiece can movably pass through the stripping hole driven by the clamp insert.

[0010] In some embodiments, along the radial direction of the stripping hole, the size of the cross section of the spiral groove gradually decreases from the groove mouth of the spiral groove to the groove bottom of the spiral groove.

[0011] In some embodiments, a receiving groove coaxial with and communicating with the stripping hole is formed on a side of the stripping block away from the lower die. The diameter of the receiving groove is larger than that of the stripping hole. The receiving groove is used to receive lubricating liquid and gas so that the lubricating liquid and the gas enter the stripping hole.

[0012] In some embodiments, an avoidance groove coaxial with and communicating with the stripping hole is formed on a side of the stripping block close to the lower die. The diameter of the avoidance groove is larger than or equal to that of the stripping hole. The spiral groove is located on a side of the avoidance groove away from the lower die.

[0013] In some embodiments, along the die closing direction, the length of the avoidance groove ranges from 0.2 mm to 0.4 mm.

[0014] In some embodiments, the lower die is provided with an avoidance hole opposite to the stripping hole. The avoidance hole is used to avoid the workpiece during the processing of the workpiece material. Description of the Drawings

[0015] Figure 1 is a three-dimensional structural schematic diagram of the processing die provided by the embodiment of the present application in cooperation with the applicable material.

[0016] Figure 2 is Figure 1 the exploded structural schematic diagram of the processing die shown.

[0017] Figure 3 is Figure 1 the sectional view of the upper die in the processing die shown along the III-III direction.

[0018] Figure 4 is Figure 3 the enlarged schematic diagram of the IV area in.

[0019] Figure 5 is Figure 1 the sectional view of the upper die in the processing die shown along the V-V direction.

[0020] Figure 6 is Figure 2 the three-dimensional structural schematic diagram of the stripping block in the processing die shown.

[0021] Figure 7 is Figure 6 the sectional view of the stripping block shown along the VII-VII direction.

[0022] Description of the Main Component Symbols

[0023] Processing die 100

[0024] Upper die 10

[0025] Transport channel 101

[0026] Oil and gas passage 1011

[0027] Receiving cavity 1012

[0028] Oil outlet 1013

[0029] Gas outlet 1014

[0030] Workpiece to be processed 11

[0031] Stripping carrier plate 12

[0032] Mounting groove 121

[0033] Spacer block 13

[0034] First mounting hole 131

[0035] Perforation 132

[0036] Stripping back plate 14

[0037] Second mounting hole 141

[0038] Slot 142

[0039] First bolt 151

[0040] Second bolt 152

[0041] Upper clamping plate 16

[0042] Embedded groove 161

[0043] Clamping plate insert 17

[0044] Third mounting hole 171

[0045] Upper backing plate 18

[0046] Fourth mounting hole 181

[0047] First control valve 191

[0048] Second control valve 192

[0049] Lower die 20

[0050] Lower template 21

[0051] Assembly groove 211

[0052] Lower backing plate 22

[0053] Cutting edge insert 23

[0054] Relief hole 231

[0055] Third bolt 24

[0056] Stripping block 30

[0057] Stripping hole 31

[0058] Spiral groove 311

[0059] Connecting hole 32

[0060] Receiving groove 33

[0061] Avoidance groove 34

[0062] Material 400

[0063] Punching hole 410 Specific implementation mode

[0064] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0065] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, it should be noted that the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0066] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the term "connection" 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 or can communicate with each other, it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to specific circumstances. Some embodiments of the present application will be described in detail below with reference to the drawings.

[0067] Please refer to Figure 1, embodiments of the present application provide a processing die 100 for processing the structural features of a material 400. Among them, the processing die 100 can process the structural features of the material 400 by means of blanking, stamping, etc. The structural features of the material 400 may include punching holes 410, convex hulls (not shown in the figure), etc. For ease of understanding, in the embodiments of the present application, the example of the processing die 100 processing the punching holes 410 of the material 400 by blanking is used for illustration. Obviously, this is not a limitation on the embodiments of the present application.

[0068] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , in this embodiment, the processing die 100 includes an upper die 10, a lower die 20 and a stripper block 30.

[0069] The lower die 20 is used to carry the material 400. The upper die 10 and the lower die 20 are adapted to be closed along the die closing direction. The upper die 10 includes a processing member 11 for processing the material 400 along the die closing direction.

[0070] The stripper block 30 is inserted on the side of the upper die 10 facing the lower die 20. The stripper block 30 is provided with a stripper hole 31 for the processing member 11 to movably pass through. A spiral groove 311 for storing lubricating fluid is provided on the inner wall of the stripper hole 31 and extends along the die closing direction; a conveying channel 101 communicating with the stripper hole 31 is provided in the upper die 10. The conveying channel 101 is used to introduce lubricating fluid and / or gas into the stripper hole 31 so that the lubricating fluid in the stripper hole 31 is discharged along the spiral groove 311.

[0071] Specifically, the die closing direction is Figure 1In the Z-axis direction shown, when the processing mold 100 processes the material 400, the material 400 is first placed on the lower mold 20, and then the upper mold 10 moves toward the lower mold 20 along the mold closing direction and closes the mold with the lower mold 20. The workpiece 11 passes through the stripping hole 31 to process the material 400. The debris generated by the workpiece 11 processing the material 400 will partially adhere to the workpiece 11. When the upper mold 10 and the lower mold 20 are opened, the workpiece 11 returns to its original position through the stripping hole 31, and the conveying channel 101 is opened at the same time. When lubricating liquid and / or gas is introduced into the stripping hole 31, the lubricating liquid in the spiral groove 311 cleans the workpiece 11 and the stripping hole 31 under the pressure of the lubricating liquid and / or gas introduced into the stripping hole 31 by the conveying channel 101, and the peeled debris is brought out of the stripping hole 31 along the spiral groove 311, thereby effectively preventing the debris adhering to the workpiece 11 from damaging the workpiece 11 and the stripping hole 31, thereby improving the processing accuracy and service life of the processing mold 100. In addition, the lubricating liquid in the spiral groove 311 can also reduce the friction between the workpiece 11 and the stripping hole 31, and can cool the workpiece 11, which is beneficial to reducing the amount of debris adhering to the workpiece 11, and further beneficial to improving the processing accuracy and service life of the processing mold 100.

[0072] In this embodiment, the upper mold 10 also includes a stripping carrier plate 12, a pad 13 and a stripping back plate 14. The stripping back plate 14 is arranged on the side of the stripping carrier plate 12 facing away from the lower mold 20. The stripping carrier plate 12 is provided with a mounting groove 121 extending to the stripping back plate 14 on the side facing the lower mold 20. The pad 13 is arranged in the mounting groove 121 and abuts against the stripping back plate 14. The stripping block 30 is arranged in the mounting groove 121 and is located on the side of the pad 13 facing the lower mold 20. The workpiece 11 is passed through the stripping back plate 14 and the pad 13 and is arranged opposite to the stripping hole 31. The conveying channel 101 is opened on the stripping back plate 14 and the pad 13. In this way, by opening the mounting groove 121 on the stripping carrier plate 12, it is convenient to install the stripping block 30. By opening different parts of the conveying channel 101 on the stripping back plate 14 and the pad 13 respectively, it is convenient to process the conveying channel 101.

[0073] In this embodiment, the upper mold 10 also includes a first bolt 151, and a connecting hole 32 is provided on the stripping block 30. The diameter of the connecting hole 32 at one end close to the lower mold 20 is larger than the diameter of the other parts of the connecting hole 32. The pad 13 and the stripping back plate 14 are respectively provided with a first mounting hole 131 and a second mounting hole 141 which are arranged opposite to the connecting hole 32. The first bolt 151 passes through the connecting hole 32, the first mounting hole 131 and is threadedly connected to the second mounting hole 141, so as to facilitate fixing the stripping block 30 and the pad 13 to the stripping back plate 14, and facilitate removing the stripping block 30 and the pad 13. The end of the first bolt 151 close to the lower mold 20 is buried in the connecting hole 32, so as to effectively avoid the first bolt 151 from affecting the clamping of the upper mold 10 and the lower mold 20.

[0074] In this embodiment, the upper die 10 further includes an upper clamping plate 16, a clamping plate insert 17 and an upper backing plate 18. The upper clamping plate 16 is movably disposed on the side of the stripping back plate 14 away from the stripping carrier plate 12, and the upper clamping plate 16 can approach or move away from the stripping back plate 14 along the die closing direction. A slot 142 is formed on the side of the stripping back plate 14 facing the upper clamping plate 16. The clamping plate insert 17 is inserted into the side of the upper clamping plate 16 facing the stripping back plate 14, and one end of the clamping plate insert 17 away from the upper clamping plate 16 extends into the slot 142. The upper backing plate 18 is disposed on the side of the upper clamping plate 16 away from the stripping back plate 14. One end of the workpiece 11 away from the lower die 20 is inserted into the clamping plate insert 17, so that the workpiece 11 can movably pass through the stripping hole 31 driven by the clamping plate insert 17. Specifically, the upper clamping plate 16, the upper backing plate 18 and the clamping plate insert 17 move relative to the stripping back plate 14 when the upper die 10 and the lower die 20 are closed and opened. Under normal conditions, there is a certain distance between the upper clamping plate 16 and the stripping back plate 14. When the upper die 10 and the lower die 20 are closed, the upper clamping plate 16, the upper backing plate 18 and the clamping plate insert 17 approach the stripping back plate 14 and drive the workpiece 11 to pass through the stripping hole 31 and extend to the side of the stripping block 30 away from the spacer block 13, so as to facilitate the processing of the material 400. When the upper die 10 and the lower die 20 are opened, the upper clamping plate 16, the upper backing plate 18 and the clamping plate insert 17 move away from the stripping back plate 14 and drive the workpiece 11 into the stripping hole 31, so as to facilitate the separation of the workpiece 11 from the material 400.

[0075] In this embodiment, the slot 142 is a through slot, and a through hole 132 is formed on the spacer block 13. The through hole 132 extends along the die closing direction and the two ends of the through hole 132 are respectively communicated with the slot 142 and the stripping hole 31. The workpiece 11 passes through the slot 142 and the through hole 132 and extends into the stripping hole 31.

[0076] In this embodiment, an embedding groove 161 is formed on the side of the upper clamping plate 16 facing the stripping back plate 14 and is disposed opposite to the slot 142. The embedding groove 161 can be a through slot, and the clamping plate insert 17 is embedded in the embedding groove 161. The upper die 10 further includes a second bolt 152. Oppositely arranged third mounting holes 171 and fourth mounting holes 181 are respectively formed on the clamping plate insert 17 and the upper backing plate 18. The diameter of one end of the third mounting hole 171 away from the upper backing plate 18 is larger than the diameter of other parts of the third mounting hole 171. The second bolt 152 passes through the third mounting hole 171 and is threadedly connected with the fourth mounting hole 181, so as to facilitate the fixing of the clamping plate insert 17 to the upper backing plate 18 and facilitate the disassembly of the clamping plate insert 17. One end of the second bolt 152 away from the upper backing plate 18 is buried in the third mounting hole 171, which is beneficial to improving the structural compactness of the second bolt 152, the upper backing plate 18 and the clamping plate insert 17 after assembly.

[0077] In this embodiment, the upper die 10 further includes a guide post (not shown in the figure) and an elastic member (not shown in the figure). The guide post passes through the upper backing plate 18, the upper clamping plate 16, the stripping back plate 14, and the stripping carrier plate 12. The guide post guides the moving directions of the upper backing plate 18, the upper clamping plate 16, and the clamping insert 17 relative to the stripping back plate 14. The elastic member is disposed between the upper clamping plate 16 and the stripping back plate 14. When the upper die 10 and the lower die 20 are opened, the elastic member drives the upper clamping plate 16, the clamping insert 17, and the upper backing plate 18 away from the stripping back plate 14.

[0078] In this embodiment, the conveying channel 101 includes an oil-gas passage 1011, a storage cavity 1012, an oil injection port 1013, and a gas injection port 1014. The storage cavity 1012 is opened on the stripping back plate 14. The oil-gas passage 1011 is opened on the spacer block 13, and both ends of the oil-gas passage 1011 are respectively communicated with the storage cavity 1012 and the stripping hole 31. Both the oil injection port 1013 and the gas injection port 1014 are opened on the stripping back plate 14, and both the oil injection port 1013 and the gas injection port 1014 are communicated with the storage cavity 1012. The oil injection port 1013 is used to input lubricating fluid into the storage cavity 1012, and the gas injection port 1014 is used to convey gas into the storage cavity 1012 to increase the pressure in the storage cavity 1012, so that the lubricating fluid and the gas enter the spiral groove 311 through the storage cavity 10123 and the oil-gas passage 1011. Specifically, when the upper die 10 and the lower die 20 are closed, the lubricating fluid is injected into the storage cavity 1012 from the oil injection port 1013. When the upper die 10 and the lower die 20 are opened, the gas is injected into the storage cavity 1012 from the gas injection port 1014, so that the air pressure in the storage cavity 1012 increases, and then the lubricating fluid and the gas enter the spiral groove 311 through the storage cavity 1012 and the oil-gas passage 1011. In this way, it is beneficial to improve the cleaning effect of the lubricating fluid and the gas on the stripping hole 31 and the workpiece 11.

[0079] In this embodiment, the upper die 10 further includes a first control valve 191 and a second control valve 192. Both the first control valve 191 and the second control valve 192 can be solenoid valves. The first control valve 191 is disposed at the oil injection port 1013, and the second control valve 192 is disposed at the gas injection port 1014. The first control valve 191 and the second control valve 192 are used to control the alternate opening and closing of the oil injection port 1013 and the gas injection port 1014. Specifically, when the upper die 10 and the lower die 20 are closed, the first control valve 191 is opened, and the second control valve 192 is closed, so as to avoid the lubricating fluid from entering the air pipe (not shown in the figure) connected to the gas injection port 1014. When the upper die 10 and the lower die 20 are opened, the first control valve 191 is closed, and the second control valve 192 is opened, so as to avoid the gas from entering the oil pipe (not shown in the figure) connected to the oil injection port 1013.

[0080] In this embodiment, the lower die 20 is provided with a clearance hole 231 arranged opposite to the stripping hole 31. The clearance hole 231 is used to avoid the workpiece 11 when the workpiece 11 processes the material 400. In this way, it is convenient for the workpiece 11 to process the punching 410 and other structural features of the material 400.

[0081] In this embodiment, the lower die 20 includes a lower die plate 21, a lower backing plate 22, a blade insert 23, and a third bolt 24. The lower backing plate 22 is disposed on the side of the lower die plate 21 facing away from the upper die 10. A mounting groove 211 is defined on the side of the lower die plate 21 facing the upper die 10. The blade insert 23 is embedded in the mounting groove 211. The third bolt 24 passes through the blade insert 23 and is connected to the lower backing plate 22. A clearance hole 231 is defined in the blade insert 23. This facilitates assembly and disassembly of the blade insert 23 and facilitates replacement of the corresponding blade insert 23 based on the structural characteristics of the material 400 to be processed.

[0082] Please refer to Figure 6 and Figure 7 In this embodiment, the cross-sectional dimensions of the spiral groove 311 gradually decrease from the opening of the spiral groove 311 to the bottom of the spiral groove 311 along the radial direction of the stripping hole 31. This enhances the flow guiding effect of the spiral groove 311 and prevents debris from accumulating at the bottom of the spiral groove 311.

[0083] In this embodiment, a receiving groove 33 is provided on the side of the stripping block 30 away from the lower die 20. The receiving groove 33 is coaxially arranged with and communicates with the stripping hole 31. The diameter of the receiving groove 33 is larger than the diameter of the stripping hole 31. The receiving groove 33 is used to receive lubricating liquid and gas so that the lubricating liquid and gas enter the stripping hole 31. Specifically, the receiving groove 33 is communicated with the oil and gas passage 1011. When the gas and lubricating liquid enter the stripping hole 31 through the oil and gas passage 1011, the receiving groove 33 gathers the gas and lubricating liquid and guides them into the stripping hole 31, thereby helping to reduce the probability of the gas and lubricating liquid overflowing from the entrance of the stripping hole 31.

[0084] In this embodiment, the diameter of the stripping hole 31 ranges from 2 mm to 3.5 mm, and the diameter of the receiving groove 33 ranges from 5 mm to 6 mm.

[0085] In this embodiment, a relief groove 34 is provided on the side of the stripping block 30 near the lower die 20. The relief groove 34 is coaxially arranged with and communicates with the stripping hole 31. The diameter of the relief groove 34 is greater than or equal to the diameter of the stripping hole 31. The spiral groove 311 is located on the side of the relief groove 34 facing away from the lower die 20. The provision of the relief groove 34 effectively prevents the protrusion formed at the end of the spiral groove 311 from contacting the material 400 and damaging the surface of the material 400.

[0086] In this embodiment, along the mold closing direction, the length of the avoidance groove 34 ranges from 0.2 mm to 0.4 mm. If the depth of the avoidance groove 34 is too small, the avoidance groove 34 cannot prevent the bump formed at the end of the spiral groove 311 from contacting the material 400. If the depth of the avoidance groove 34 is too large, when the workpiece 11 returns after processing the material 400, it is easy to bring the part of the material 400 near the avoidance groove 34 into the avoidance groove 34, thus deforming the material 400. By reasonably designing the length of the avoidance groove 34, it is possible to effectively prevent the bump formed at the end of the spiral groove 311 from contacting the material 400 and damaging the surface of the material 400, and also reduce the probability of deformation of the material 400.

[0087] In some other embodiments, the length of the avoidance groove 34 can be twice the thickness of the material 400, and the embodiments of the present application do not make specific limitations on this.

[0088] In summary, the processing mold 100 of the embodiment of the present application forms a stripping hole 31 in the stripping block 30 for the workpiece 11 to pass through movably, forms a spiral groove 311 for storing lubricating fluid on the inner wall of the stripping hole 31, and forms a conveying channel 101 in the upper mold 10 that communicates with the stripping hole 31 and is used to introduce lubricating fluid and / or gas into the stripping hole 31. When the upper mold 10 and the lower mold 20 are opened, the workpiece 11 returns through the stripping hole 31, and the conveying channel 101 simultaneously introduces lubricating fluid and / or gas into the stripping hole 31. The lubricating fluid in the spiral groove 311 cleans the workpiece 11 and the stripping hole 31 under the pressure of the lubricating fluid and / or gas introduced into the stripping hole 31 by the conveying channel 101, and takes the peeled debris out of the stripping hole 31 along the spiral groove 311. Thus, it is possible to effectively prevent the debris adhered to the workpiece 11 from damaging the workpiece 11 and the stripping hole 31, and further improve the processing accuracy and service life of the processing mold 100. In addition, the lubricating fluid in the spiral groove 311 can also reduce the friction between the workpiece 11 and the stripping hole 31, and can cool the workpiece 11, which is beneficial to reducing the amount of debris adhered to the workpiece 11, and further beneficial to improving the processing accuracy and service life of the processing mold 100.

[0089] For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present application, the present application can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present application is defined by the appended claims rather than the above description. Therefore, it is intended to cover all changes falling within the meaning and scope of the equivalent elements of the claims in the present application.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A processing mold, characterized in that, include: Lower die, used to carry materials; An upper mold adapted to be clamped with the lower mold along a clamping direction, the upper mold comprising a processing part for processing the material along the clamping direction; a stripping block, inserted on a side of the upper die facing the lower die, the stripping block being provided with a stripping hole for the workpiece to movably pass through, the inner wall of the stripping hole being provided with a spiral groove extending along the mold closing direction for receiving lubricating liquid; A conveying channel connected to the stripping hole is provided in the upper die, and the conveying channel is used to introduce lubricating liquid and / or gas into the stripping hole so that the lubricating liquid in the stripping hole is discharged along the spiral groove.

2. The processing mold according to claim 1, wherein The upper mold also includes a stripping supporting plate, a stripping back plate and a pad. The stripping back plate is arranged on the side of the stripping supporting plate away from the lower mold. The side of the stripping supporting plate facing the lower mold is provided with a mounting groove extending to the stripping back plate. The pad is arranged in the mounting groove and abuts against the stripping back plate. The stripping block is arranged in the mounting groove and is located on the side of the pad facing the lower mold. The workpiece is passed through the stripping back plate and the pad and is arranged opposite to the stripping hole. The conveying channel is opened in the stripping back plate and the pad.

3. The processing die according to claim 2, wherein The conveying channel includes an oil and gas passage, a receiving chamber, an oil delivery port and an air delivery port. The receiving chamber is opened on the stripping back plate, the oil and gas passage is opened on the pad, and the two ends of the oil and gas passage are respectively connected with the receiving chamber and the stripping hole. The oil delivery port and the air delivery port are both opened on the stripping back plate, and the oil delivery port and the air delivery port are both connected with the receiving chamber. The oil delivery port is used to input lubricating liquid into the receiving chamber, and the air delivery port is used to deliver gas to the receiving chamber to increase the pressure in the receiving chamber, so that the lubricating liquid and gas pass through the receiving chamber and the oil and gas passage and enter the spiral groove.

4. The processing die according to claim 3, characterized in that, The upper mold also includes a first control valve and a second control valve. The first control valve is arranged at the oil delivery port, and the second control valve is arranged at the air delivery port. The first control valve and the second control valve are used to control the oil delivery port and the air delivery port to open and close alternately.

5. The processing mold according to claim 2, characterized in that, The upper mold also includes an upper pad, an upper clamping plate and a clamping plate insert. The upper clamping plate is movably arranged on the side of the stripping back plate away from the stripping carrying plate, and the upper clamping plate can approach or move away from the stripping back plate along the mold closing direction. A slot is provided on the side of the stripping back plate facing the upper clamping plate. The clamping plate insert is inserted on the side of the upper clamping plate facing the stripping back plate, and the end of the clamping plate insert away from the upper clamping plate extends into the slot. The upper pad is arranged on the side of the upper clamping plate away from the stripping back plate, and the end of the workpiece away from the lower mold is inserted into the clamping plate insert, so that the workpiece can movably pass through the stripping hole under the drive of the clamping plate insert.

6. The processing mold according to claim 1, characterized in that, Along the radial direction of the stripping hole, the size of the cross section of the spiral groove gradually decreases from the groove opening of the spiral groove to the groove bottom of the spiral groove.

7. The processing die according to claim 1, characterized in that, On one side of the stripping block away from the lower die, a storage groove coaxial with and communicating with the stripping hole is provided. The diameter of the storage groove is larger than that of the stripping hole. The storage groove is used for storing lubricating liquid and gas so that the lubricating liquid and the gas enter the stripping hole.

8. The processing mold according to claim 1, characterized in that, On one side of the stripping block close to the lower die, an avoidance groove coaxial with and communicating with the stripping hole is provided. The diameter of the avoidance groove is larger than or equal to that of the stripping hole. The spiral groove is located on the side of the avoidance groove away from the lower die.

9. The processing die according to claim 8, wherein, Along the die closing direction, the length of the avoidance groove ranges from 0.2 mm to 0.4 mm.

10. The processing mold according to claim 1, characterized in that, The lower die is provided with an avoidance hole opposite to the stripping hole. The avoidance hole is used for avoiding the workpiece when processing the workpiece material.

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