Stamping die convenient for deslagging

Abstract

The invention relates to the technical field of dies, in particular to a stamping die convenient for deslagging, which comprises an upper die, a middle die and a lower die, the middle mold is fixedly arranged and is provided with a surface structure, and a through hole is formed in the surface structure; the upper mold and the lower mold can move in the vertical direction, so that the lower mold can penetrate through the through hole; the upper die comprises a connecting part, a stamping part and a lower pressing head, the lower pressing head is fixedly connected with the connecting part, and the stamping part is movably connected with the connecting part, so that the stamping part and the connecting part can move relative to each other in the vertical direction; according to the stamping die convenient to discharge slag, the problems that finished products cannot be conveniently discharged, and waste materials and waste residues cannot be conveniently taken out are effectively solved, and meanwhile it is guaranteed that semi-finished products are fixed under the condition that the semi-finished products are not damaged.

Description

Technical Field

[0001] The invention belongs to the technical field of molds, and in particular relates to a stamping mold which is convenient for slag removal. Background Art

[0002] Stamping is a production technology that uses the power of conventional or special stamping equipment to directly subject the sheet metal to deformation force in the die and deform it, so as to obtain a product sheet metal of a certain shape, size and performance. Sheet metal, die and equipment are the three elements of stamping. According to the stamping temperature, it is divided into hot stamping and cold stamping. The former is suitable for sheet metal processing with high deformation resistance and poor plasticity; the latter is carried out at room temperature and is a commonly used stamping method for thin plates.

[0003] Cold stamping dies are one of the most widely used dies, including punching dies, blanking dies, bending dies, drawing dies, etc. In recent years, the application of cold stamping dies has become more and more extensive. Cold stamping has the advantages of low cost, stable product quality, and can process parts with various performances and states.

[0004] Lamps are an indispensable daily necessity in people's daily life and can be found everywhere. There are many kinds of lamps in various shapes and types. The processing of lampshades mostly adopts cold stamping dies.

[0005] During the production process of the oval lampshade, the semi-finished lampshade will be processed by curling the edges, punching the top, and assembling and installing accessories.

[0006] During the processing, two upper and lower molds are usually used. The shape of the lower mold matches the semi-finished product and can automatically position the semi-finished product, and the upper mold presses down to stamp the semi-finished product.

[0007] When processing the surface of the semi-finished product, since the surface of the semi-finished product is curved and thin, the shape is large at the bottom and small at the top, and the outer surface is curved, the semi-finished product is not stable enough on the lower mold, so the semi-finished product needs to be fixed. However, the common fixing method is clamping, which has the following problems:

[0008] ① The clamping and fixing method is difficult to take into account the clamping stability, not damaging the semi-finished product, and not deforming the semi-finished product. The clamping effect is poor, which affects the production yield;

[0009] ② After punching the semi-finished product, due to the stamping pressure, the semi-finished product will be stuck on the lower mold, making it difficult to remove the finished product from the lower mold; or there is friction between the semi-finished product and the upper mold, and when the upper mold is reset, it will drive the formed product to move upward at the same time, affecting the material removal process;

[0010] ③ The waste generated after punching will be stuck on the lower mold, making it difficult to easily remove the waste and slag. Summary of the invention

[0011] In view of the deficiencies in the prior art, an object of the present invention is to provide a stamping die that is convenient for slag removal.

[0012] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention includes:

[0013] A stamping die for facilitating slag removal, comprising an upper die, a middle die and a lower die;

[0014] The middle mold is fixedly arranged, and the middle mold has a surface structure, the surface structure is at least used to support the semi-finished product, and the surface structure is provided with a through hole;

[0015] The upper die and the lower die can both move vertically, so that the lower die can pass through the through hole and cooperate with the upper die to complete the stamping process;

[0016] The upper die comprises a connecting portion, a stamping portion and a lower pressing head, wherein the lower pressing head is fixedly connected to the connecting portion, and the stamping portion is movably connected to the connecting portion, so that the stamping portion and the connecting portion can be mutually displaced in the vertical direction; an end of the stamping portion is located below the lower pressing head, and the stamping portion is at least used to press the semi-finished product;

[0017] The top of the lower mold has the same shape as the inner surface of the top of the semi-finished product; when the lower mold contacts the inner surface of the semi-finished product, the semi-finished product can slide down along the surface of the lower mold under the action of gravity, so that the inner surface of the semi-finished product fits with the upper mold.

[0018] In the present invention, the semi-finished product can be attached to the surface of the lower mold under the action of gravity, and the automatic positioning of the semi-finished product can be achieved.

[0019] Preferably, there are multiple pressing heads, several of which are evenly distributed around the axis of the lower die, and several of which are distributed around the stamping part.

[0020] Preferably, the diameter of the through hole of the middle mold is smaller than the diameter of the bottom of the semi-finished product.

[0021] In the present invention, the diameter of the through hole is smaller than the diameter of the bottom of the semi-finished product. During the lower die descending process, the semi-finished product after stamping will be resisted by the middle die and separated from the lower die.

[0022] At the same time, when punching semi-finished products, the loading process only requires placing the semi-finished product on the middle mold so that the axis of the semi-finished product is roughly aligned with the axis of the through hole. The loading work can be completed without manual precise alignment of the loading, which is conducive to reducing the difficulty of using the stamping mold.

[0023] Preferably, the lower die is provided with a punching hole, and the punching hole and the lower punch are used together for punching work.

[0024] Preferably, the lower mold has a hollow structure, and the hollow structure is connected to the punching hole.

[0025] In the present invention, waste residue generated during the stamping process can be discharged through the hollow structure. At the same time, the hollow structure is conducive to slowing down the accumulation of heat on the lower mold, which is convenient for cooling the lower mold.

[0026] Preferably, the stamping portion has a stamping ring, and the lower die has a stamping groove matching the stamping ring.

[0027] Preferably, the lower mold is provided with an air hole, the air hole is located above the stamping groove, and the lower mold is provided with a blowing channel connected with the air hole.

[0028] In the present invention, after the stamping process is completed, the waste obtained by the stamping can be blown up by blowing air into the blowing channel, thereby achieving the removal of the waste generated by the stamping process.

[0029] Preferably, the outer diameter of the stamping ring matches the outer diameter of the stamping groove, and the inner diameter of the stamping ring is larger than the inner diameter of the stamping groove.

[0030] Preferably, the number of the air holes is at least two, and several of the air holes are connected to the blowing channel.

[0031] In the present invention, waste materials remaining on the lower mold can be blown off by blowing air into the blowing channel; and waste materials or semi-finished products on the lower mold can be adsorbed by sucking air into the blowing channel.

[0032] Preferably, a plurality of the pores are evenly distributed on the upper mold.

[0033] In the present invention, waste materials can be blown off by blowing air into the air holes.

[0034] Preferably, the plurality of pores are unevenly distributed on the lower mold.

[0035] In the present invention, the waste can be blown to the same direction through the uneven distribution of the air holes, and the falling direction of the waste can be controlled, so that the waste can be conveniently collected in a centralized manner.

[0036] Preferably, each corresponding upper die, middle die and lower die constitute a group of stamping dies, and several groups of stamping dies are arranged in parallel and work synchronously.

[0037] Compared with the prior art, the advantages of the present invention include:

[0038] (1) The present invention provides a stamping die that is convenient for slag removal. The semi-finished product can be fixed by pressing the semi-finished product with a stamping part. Since the lower die has the same shape as the inner surface of the semi-finished product, under the cooperation of the lower die and the stamping part, the stamping part will not damage the semi-finished product or deform the semi-finished product during the fixing process of the semi-finished product. At the same time, the structure is simple and maintenance is convenient.

[0039] (2) The present invention provides a stamping die that facilitates slag discharge, and waste generated by stamping can be discharged under the guidance of the hollow structure, which is conducive to the centralized collection of waste;

[0040] (3) The present invention provides a stamping die that facilitates slag removal. Since the diameter of the through hole is smaller than the diameter of the bottom of the semi-finished product, the lower die and the semi-finished product after stamping can be automatically separated under the blocking effect of the middle die;

[0041] (4) The present invention provides a stamping die that is convenient for slag removal. When the upper die is separated from the semi-finished product, the lower punch can be smoothly separated from the semi-finished product due to the pressing action of the stamping part, thereby minimizing the upward movement of the semi-finished product with the lower punch under friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 It is an overall schematic diagram of a stamping die for facilitating slag removal in the present invention;

[0044] Figure 2 It is a schematic diagram of the structure of the upper mold and the lower mold in the present invention;

[0045] Figure 3 It is a schematic structural diagram of the second embodiment of the present invention.

[0046] Reference numerals:

[0047] 11. Upper mold; 12. Middle mold; 13. Lower mold; 14. Connecting part; 15. Lower pressure head; 16. Guide rod; 17. Pressing head; 18. Spring; 19. Movable hole; 21. Limit block; 22. Stop block; 23. Through hole; 24. Anti-skid pad; 25. Punching hole; 26. Hollow structure; 27. Bottom plate; 28. Support rod; 29. ​​Top plate; 31. Upper hydraulic rod; 32. Lower hydraulic rod; 33. Punching ring; 34. Punching groove; 35. Air hole; 36. Blowing pipe. DETAILED DESCRIPTION

[0048] In view of the deficiencies in the prior art, the inventor of this case has proposed the technical solution of the present invention after long-term research and extensive practice. The following will further explain the technical solution, its implementation process and principle, etc. in conjunction with the drawings in the embodiments of this application and specific implementation cases.

[0049] It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, the present invention covers any substitution, modification, equivalent method and scheme made on the spirit, principle and scope of the present invention defined by the claims. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] In the description of the present application, "first", "second", "third" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "an" and other similar words do not indicate a quantity limitation, but indicate the existence of at least one. "Include" or "comprise" and other similar words mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0051] In the description of the present application, the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships 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 cannot be understood as a limitation on the present application. In addition, when positional terms such as both sides, outside, up and down are used, it should be understood that they are only used to facilitate understanding and description, considering that the structure may be facing other positions.

[0052] In the description of this application, unless otherwise clearly specified and limited, the technical or scientific terms used should have the usual meanings understood by persons with general skills in the field to which this application belongs. Terms such as "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a conflicting connection, or an integrated connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] The embodiment of the present invention is intended to introduce and illustrate the structural composition of a stamping die that is convenient for slag removal and the matching relationship between the various components. Unless otherwise specified, the dimensions, materials and manufacturing processes of the various components in a stamping die that is convenient for slag removal in the embodiment of the present invention can be selected according to specific circumstances and are not specifically limited or described herein.

[0054] Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the following detailed description of the present invention. For those skilled in the art, the present invention can be fully understood without the description of these details.

[0055] Example 1

[0056] See also Figure 1 and Figure 2 A stamping die for facilitating slag removal comprises an upper die 11, a middle die 12 and a lower die 13. The upper die 11, the middle die 12 and the lower die 13 are vertically arranged in sequence. The middle die 12 is fixedly arranged. Both the upper die 11 and the lower die 13 can move vertically. The middle die 12 sets off the semi-finished product, and the upper die 11 and the lower die 13 fix and stamp the semi-finished product.

[0057] The upper mold 11 includes a connecting part 14, a stamping part, an elastic member and a lower press head 15. The lower press head 15 is fixedly connected to the connecting part 14, and the stamping part is movably connected to the connecting part 14, so that the stamping part and the connecting part 14 can be displaced relative to each other in the vertical direction; the end of the stamping part is located below the lower press head 15, and the stamping part is at least used to press the semi-finished product.

[0058] Specifically, in this embodiment, the stamping part includes a guide rod 16 and a pressing head 17, the pressing head 17 is connected to the end of the guide rod 16, and the bottom surface of the pressing head 17 has the same shape as the top of the semi-finished product; the elastic member is specifically a spring 18. A vertical movable hole 19 is provided on the connecting part 14, and the guide rod 16 extends into the movable hole 19 and can move in the movable hole 19. A limit block 21 located at the movable hole 19 is provided at the lower end of the connecting part 14, and a stop block 22 is provided at the end of the guide rod 16 located in the movable hole 19. The limit block 21 is located on the moving path of the stop block 22, and the limit block 21 is used to prevent the stop block 22 from leaving the movable hole 19. The spring 18 is sleeved on the guide rod 16, one end of the spring 18 is fixedly connected to the lower end of the connecting part 14, and the other end of the spring 18 is connected to the pressing head 17. When the pressing head 17 moves downward, the spring 18 is stretched and at the same time drives the guide rod 16 to move vertically in the movable hole 19 until the pressing head 17 contacts the semi-finished product to resist the semi-finished product.

[0059] In this embodiment, the number of the pressing heads 15 is 6 and they are evenly distributed around the punching part. When the spring 18 reaches the maximum elongation, the pressing head 17 is located below the pressing head 15.

[0060] A through hole 23 is formed on the middle mold 12 . The through hole 23 penetrates the middle mold 12 and is located below the pressing head 17 . The through hole 23 , the lower mold 13 , and the pressing head 17 are coaxial.

[0061] An anti-skid pad 24 is also attached to the upper surface of the middle mold 12 . The anti-skid pad 24 is an annular structure. The anti-skid pad 24 is located at the through hole 23 and is coaxial with the through hole 23 . The anti-skid pad 24 can reduce the collision between the semi-finished product and the middle mold 12 .

[0062] In this embodiment, six punching holes 25 are provided on the lower mold 13. The six punching holes 25 are evenly distributed on the surface of the lower mold 13 and all penetrate the lower mold 13. Each lower punch head 15 corresponds to the position of each punching hole 25. When punching, the lower punch head 15 moves downward and closes with the punching hole 25 to complete the punching process of the semi-finished product.

[0063] The lower die 13 is a hollow structure 26 , and each punching hole 25 extends to communicate with the hollow structure 26 . Waste residue generated during the punching process of the semi-finished product can be directly discharged through the hollow structure 26 .

[0064] For example, a stamping equipment suitable for the stamping die that is convenient for slag discharge in this embodiment includes a bottom plate 28 and a bottom plate 2827, a support rod is provided on the base, a top plate 29 is provided on the top of the support rod, a middle mold 12 is fixed in the middle of the support rod, an upper hydraulic rod 31 is provided on the top plate 29, the upper hydraulic rod 31 is connected to the upper mold 11, the upper mold 11 is arranged below the upper hydraulic rod 31, the upper mold 11 drives the upper mold 11 to move downward, a lower hydraulic rod 32 is provided on the bottom plate 28 and the bottom plate 2827, the lower hydraulic rod 32 is arranged above the bottom plate 28 and the bottom plate 2827, the lower mold 13 is arranged at the output end of the lower hydraulic rod 32, the lower hydraulic rod 32 is used to drive the lower mold 13 to move upward, the upper mold 11 moves downward and passes through the through hole 23, and the lower mold 13 moves upward at the same time, the upper mold 11 and the lower mold 13 are both in contact with the semi-finished product, thereby realizing the function of fixing and processing the semi-finished product.

[0065] When processing the semi-finished product, the semi-finished product is placed on the anti-slip mat 24 so that the semi-finished product completely covers the through hole 23, and the lower hydraulic rod 32 is started at the same time. The lower hydraulic rod 32 pushes the lower mold 13 through the through hole 23, so that the upper surface of the lower mold 13 contacts the inner surface of the semi-finished product. As the semi-finished product is lifted up, the semi-finished product moves downward along the surface of the lower mold 13 under the action of gravity. Finally, the semi-finished product is sleeved on the outer surface of the lower mold 13, and the inner wall of the semi-finished product fits the lower mold 13. Then the upper hydraulic rod 31 is started at the same time, and the upper hydraulic rod 31 pushes the upper mold 11 downward and makes the pressing head 17 contact with the semi-finished product. The lower mold 13 and the pressing head 17 fix the semi-finished product together. After fixing, the upper mold 11 continues to move downward, driving the lower pressing head 15 to contact with the semi-finished product, and passes through the semi-finished product into the punching hole 25, thereby realizing the punching process of the semi-finished product, and the waste residue is discharged from the hollow structure 26.

[0066] After the semi-finished product is punched, the lower hydraulic rod 32 moves upward and drives the lower pressure head 15 to move out of the punching hole 25. When the lower pressure head 15 moves upward, the spring 18 slowly resets and the pressing head 17 continues to press the semi-finished product. When the lower pressure head 15 is completely moved out of the punching hole 25, the pressing head 17 is separated from the semi-finished product, thereby assisting the lower pressure head 15 to separate from the semi-finished product and preventing the semi-finished product from being stuck on the lower pressure head 15 after the punching is completed.

[0067] On the stamping equipment of the present embodiment, each corresponding upper die 11, middle die 12 and lower die 13 constitutes a group of stamping dies, and several groups of stamping dies are arranged in parallel and work synchronously.

[0068] In this embodiment, when the semi-finished product is stamped, it is only necessary to place the semi-finished product and take down the stamped semi-finished product, and the stamping process of the semi-finished product can be smoothly completed by the ingenious cooperation of the upper die 11, the middle die 12 and the lower die 13. It can be understood that multiple sets of stamping dies can improve work efficiency.

[0069] In other embodiments, the lower mold 13 may also be driven by a connecting rod structure to achieve synchronous upward movement.

[0070] Example 2

[0071] See also Figure 3 The difference between this embodiment and embodiment 1 is that the stamping portion further includes a stamping ring 33 .

[0072] Specifically, the punching ring 33 is arranged below the pressing head 17, and the height of the punching ring 33 is greater than the distance from the bottom of the punching groove 34 to the top of the semi-finished product. The lower mold 13 is provided with a punching groove 34, and the punching groove 34 cooperates with the punching ring 33, so that the top of the semi-finished product can be punched. During the punching process of the lower pressing head 15, the punching ring 33 first contacts the semi-finished product and fixes the semi-finished product. After the punching process of the lower pressing head 15 is completed, the connecting part 14 is driven to press down, so that the punching ring 33 punches the top of the semi-finished product.

[0073] Preferably, the outer diameter of the punching ring 33 matches the outer diameter of the punching groove 34, and the inner diameter of the punching ring 33 is larger than the inner diameter of the punching groove 34. Thus, the punching waste obtained in the process of punching the top of the semi-finished product is a complete whole, no waste will fall into the punching groove 34, and the waste obtained in the punching process will not be stuck on the lower mold 13.

[0074] The lower mold 13 is also provided with two air holes 35 and a blowing pipe 36. In this embodiment, the lower mold 13 is provided with a blowing pipe 36, and the blowing pipe 36 is fixedly connected to the top of the lower mold 13. The two air holes 35 are both located at the top of the lower mold 13 and above the stamping groove 34; the two air holes 35 penetrate the lower mold 13, and the two air holes 35 are connected to the blowing pipe 36. Air can be blown into the air holes 35 through the blowing pipe 36, so as to blow off the waste obtained by the opening at the top of the upper mold 11;

[0075] In other embodiments, the angle formed by the two air holes 35 and the projection of the perpendicular line of the axis of the lower mold 13 on the horizontal plane is less than 180°. Air can be blown into the air holes 35 through the blowing pipe 36 to blow off the waste obtained by the opening, thereby controlling the blowing direction of the waste residue.

[0076] In this embodiment, the blowing pipe 36 and the air hole 35 cooperate with each other to adsorb and fix the semi-finished product, thereby improving the stability of fixing the semi-finished product.

[0077] During the stamping process of the lower punch 15, the punching ring 33 first contacts the semi-finished product to fix the semi-finished product. After the stamping process of the lower punch 15 is completed, the upper hydraulic rod 31 continues to drive the lower mold 13 to move downward, so that the punching ring 33 is pressed downward, and the punching ring 33 cooperates with the punching groove 34 to realize opening a hole on the top of the semi-finished product.

[0078] After the hole is opened on the top of the semi-finished product, the upper hydraulic rod 31 is reset to drive the punch head to move upward, so that the punch head moves out of the punch hole 25, and the air is sucked through the blowing pipe 36. At the same time, when the upper hydraulic rod 31 is reset, the spring 18 is reset. After the spring 18 is completely reset, after the punch head moves out of the punch hole 25, the punch ring 33 is also moved out of the punch groove 34, and separated from the waste residue generated by the top hole. At this time, the circular waste residue will stay on the lower mold 13 due to the action of the punching and the negative pressure. Then the external setting is started to blow air to the bottom of the circular waste residue through the blowing pipe 36. Due to the asymmetrical distribution of the two air holes 35, the waste residue on the lower mold 13 can be blown to one side, achieving the effect of removing the waste residue.

[0079] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, some simple deductions or substitutions can be made without departing from the concept of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A stamping die for easy slag removal, characterized in that: The invention comprises an upper mold (11), a middle mold (12) and a lower mold (13); the middle mold is fixedly arranged, the middle mold (12) has a surface structure, the surface structure is at least used to support the semi-finished product, and a through hole (23) is arranged on the surface structure; the upper mold (11) and the lower mold (13) can both move in the vertical direction, so that the lower mold (13) can pass through the through hole (23) and cooperate with the upper mold (11) to complete the stamping process; The upper mold (11) comprises a connecting portion (14), a punching portion and a lower punch (15); the lower punch (15) is fixedly connected to the connecting portion (14); the punching portion is movably connected to the connecting portion (14), so that the punching portion and the connecting portion (14) can be displaced relative to each other in the vertical direction; the end of the punching portion is located below the lower punch (15); and the punching portion is at least used for pressing the semi-finished product; The top of the lower mold (13) has the same shape as the inner surface of the top of the semi-finished product; when the lower mold (13) contacts the inner surface of the semi-finished product, the semi-finished product can slide down along the surface of the lower mold (13) under the action of gravity, so that the inner surface of the semi-finished product fits with the upper mold (11).

2. A stamping die for facilitating slag removal according to claim 1, characterized in that: The number of the lower pressing heads (15) is multiple, and a plurality of the lower pressing heads (15) are evenly distributed around the axis of the lower die (13), and a plurality of the lower pressing heads (15) are distributed around the punching portion.

3. A stamping die for facilitating slag removal according to claim 1, characterized in that: The diameter of the through hole (23) of the middle mold (12) is smaller than the diameter of the bottom of the semi-finished product.

4. A stamping die for facilitating slag removal according to claim 1, characterized in that: The lower die (13) is provided with a punching hole (25), and the punching hole (25) and the lower punch (15) are used together for punching work.

5. A stamping die for facilitating slag removal according to claim 4, characterized in that: The lower mold (13) has a hollow structure (26), and the hollow structure (26) is connected to the punching hole (25).

6. A stamping die for facilitating slag removal according to claim 1, characterized in that: The punching portion has a punching ring (33), and the lower die (13) has a punching groove (34) matching the punching ring (33).

7. A stamping die for facilitating slag removal according to claim 6, characterized in that: The lower mold (13) is provided with an air hole (35), the air hole (35) is located above the punching groove (34), and the lower mold (13) is provided with an air blowing channel connected with the air hole (35); And / or, the outer diameter of the stamping ring (33) matches the outer diameter of the stamping groove (34), and the inner diameter of the stamping ring (33) is greater than the inner diameter of the stamping groove (34).

8. A stamping die for facilitating slag removal according to claim 7, characterized in that: The number of the air holes (35) is at least two, and a plurality of the air holes (35) are connected to the air blowing channel.

9. A stamping die for facilitating slag removal according to claim 8, characterized in that: A plurality of the air holes (35) are evenly distributed on the upper mold (11); Alternatively, the plurality of air holes (35) are unevenly distributed on the lower mold (13).

10. A stamping die for facilitating slag removal according to claim 1, characterized in that: Each corresponding upper die (11), middle die (12) and lower die (13) constitutes a group of stamping dies, and several groups of stamping dies are arranged in parallel and work synchronously.

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