Novel stopper stamping die

Abstract

The utility model discloses a novel limiting stopper stamping die, and relates to the technical field of limiting stopper dies. Comprising an upper die set and a lower die set, a punch assembly is arranged at the bottom of the upper die set, and a punching groove is formed in the top of the lower die set; the punch assembly comprises a first punch, a second punch, a third punch, a fourth punch and a fifth punch which are sequentially arranged in the advancing direction of the material belt, the first punch is used for punching the product material, the second punch is used for punching the appearance of the product material, the third punch is used for punching a groove in the product material, and the fourth punch is used for bending the product material; and the fifth punch separates the product from the material. By means of the first punch, the second punch, the third punch, the fourth punch and the fifth punch which are arranged on the upper die set, the appearance of a product is divided into a plurality of parts, round holes are punched firstly, then the appearance of the inner side and the appearance of the outer side are punched, C-shaped openings in the two ends are connected with a material belt, then bending is completed, and finally cutting is conducted, so that the size of the opening end is guaranteed, and the product quality is improved. And the use requirement of the product is met.

Description

Technical Field

[0001] This utility model relates to the field of limiter mold technology, specifically to a new type of limiter stamping mold. Background Technology

[0002] Limiters are typically used to limit the travel of valve plates inside a compressor, preventing them from moving excessively under the impact of the gas discharged from the exhaust port. This avoids the valve plates striking the support surface or the limiter, reducing the possibility of malfunctions and damage.

[0003] The limiter has a C-shaped structure, including a 1 / 2 arc limiting part and a fixing part extending tangentially at both ends of the arc. When processing the limiter, it is necessary to ensure the size of the opening end of the limiter's shape. However, when processing the limiter with existing molds, the size of the opening end is easily changed, resulting in the product quality not meeting the usage requirements. Utility Model Content

[0004] Therefore, this utility model provides a novel limiter stamping die to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A novel limiter stamping die includes an upper die assembly and a lower die assembly arranged at an interval. The bottom of the upper die assembly is provided with a punch assembly, and the top of the lower die assembly is provided with a punch groove adapted to the punch assembly.

[0007] The punch assembly includes a first punch, a second punch, a third punch, a fourth punch, and a fifth punch arranged sequentially along the material conveyor belt travel direction. The first punch punches holes in the product material, the second punch punches the product material to form a shape, the third punch punches grooves in the product material, the fourth punch bends the product material, and the fifth punch separates the product from the material.

[0008] Optionally, the upper module includes an upper mold base, an upper pad, an upper clamping plate, a stop plate, and an upper release plate arranged from top to bottom. The upper mold base, the upper pad, and the upper clamping plate are fixedly connected in sequence, and the upper release plate and the stop plate are fixedly connected.

[0009] The lower module includes a lower template, a lower pad, and a lower mold base arranged sequentially from top to bottom, and the lower mold base, lower pad, and lower template are fixedly connected in sequence.

[0010] Optionally, the first punch includes two guide hole punches and four product punches. The two guide hole punches are located on the upper template at positions corresponding to the inner edge of the material strip. The four product punches are divided into two groups, and the positions of the two groups of product punches correspond to the hole positions at both ends of the C-shaped material products on the material strip.

[0011] Optionally, there are two second punches, and the two second punches are located on the upper template at positions corresponding to the material products on the upper and lower sides of the material belt;

[0012] The second punch includes a first punching part in the shape of a 1 / 4 arc corresponding to the outer side of the material product, and another 1 / 4 arc structure symmetrically arranged along the material belt traveling direction of the first punching part. It also includes a second punching part in the shape of a 1 / 2 arc corresponding to the inner side of the material product. The two second punches are symmetrically arranged at the center and correspond to the positions of the two rows of materials on the material belt, respectively.

[0013] Optionally, there are two third punches, and the two third punches are located on the upper template at positions corresponding to the material products on the upper and lower sides of the material belt, and the two third punches are symmetrically arranged in the center.

[0014] The third punch includes a first punching part in the shape of a half-circle arc and a second punching part in the shape of a half-circle arc. The first punching part and the second punching part are arranged concentrically, and a gap is provided between the first punching part and the second punching part. The outer arc radius of the first punching part is larger than the outer arc radius of the material product, and the inner arc radius of the second punching part is smaller than the inner arc radius of the material product. The inner arc radius of the first punching part is larger than the outer arc radius of the second punching part, forming a gap at the corresponding position of the material product.

[0015] Optionally, there are two fourth punches, and the two fourth punches are located on the upper template at positions corresponding to the material products on the upper and lower sides of the material belt, and the two fourth punches are symmetrically arranged in the center.

[0016] The fourth punch has a rectangular cross-section, which is larger than the outer arc diameter of the material product. The bottom of the fourth punch has an arc-shaped structure, which is used to bend the material product.

[0017] Optionally, the fifth punch is provided in one form, which includes two punching parts. Each punching part includes a pressure plate adapted to the inner arc of the material product, and a pressure rod extending from the pressure plate toward the opening of the material product. The two punching parts are fixedly connected and are arranged symmetrically at the center.

[0018] Optionally, the upper module is further provided with a push rod, which passes through the upper ejector plate, the stop plate, the upper clamping plate and the upper pad in sequence. A second limiting hole is opened in the upper mold base, and the push rod passes through the second limiting hole. A second spring is provided in the second limiting hole. One end of the second spring is fixedly connected to the push rod, and the other end of the second spring is fixed in the second limiting hole.

[0019] Optionally, the upper module is further provided with a pin, which passes through the upper release plate, the stop plate, the upper clamping plate and the upper pad in sequence. A third limiting hole is opened in the upper mold base, and the pin passes through the third limiting hole. A third spring is provided in the third limiting hole. One end of the third spring is fixedly connected to the pin, and the other end of the third spring is fixed to the third limiting hole.

[0020] Optionally, the lower module is provided with multiple sets of sinking and floating pins, each set of sinking and floating pins including two sinking and floating pin structures, the two sinking and floating pin structures are symmetrically arranged on both sides of the material belt, the sinking and floating pins pass through the lower template and the lower pad plate from top to bottom, the lower mold base is provided with a fourth limiting hole, the fourth limiting hole is provided with a fourth spring, the bottom end of the sinking and floating pin is fixedly connected to one end of the fourth spring, and the other end of the fourth spring is fixedly connected to the fourth limiting hole.

[0021] This utility model has at least the following beneficial effects:

[0022] This utility model uses a first punch, a second punch, a third punch, a fourth punch, and a fifth punch set on the upper module to divide the product's shape into multiple parts. First, a round hole is punched, then the inner and outer shapes are punched, and the material strip is connected by C-shaped openings at both ends. Then, bending is completed, and finally, it is cut off, thereby ensuring the size of the opening end and thus meeting the product's usage requirements. Attached Figure Description

[0023] To more clearly illustrate the prior art and the present invention, the accompanying drawings used in the description of the prior art and the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other drawings from the provided drawings without any creative effort.

[0024] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this utility model can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0025] Figure 1 This is a schematic diagram of the internal structure of one embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the mold processing surface structure of one embodiment of the present invention;

[0027] Figure 3 This is a progressive die layout diagram of one embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Upper mold assembly; 101. Upper mold base; 102. Upper backing plate; 103. Upper clamping plate; 104. Stop plate; 105. Upper ejector plate; 2. Lower mold assembly; 201. Lower template; 202. Lower backing plate; 203. Lower mold base; 3. Unloading mechanism; 301. Limiting rod; 302. First limiting hole; 303. First spring; 4. First punch; 401. Guide hole punch; 402. Product punching punch; 5. Second punch 501, First punched part; 502, Second punched part; 6, Third punch; 601, First slotted part; 602, Second slotted part; 7, Fourth punch; 8, Fifth punch; 801, Pressure plate; 802, Pressure rod; 9, Push rod; 10, Second limiting hole; 11, Second spring; 12, Insert pin; 13, Third limiting hole; 14, Third spring; 15, Floating pin; 16, Fourth limiting hole; 17, Fourth spring. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0031] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," "fourth," etc. (if present), in the specification, claims, and accompanying drawings of this utility model are intended to distinguish the objects they refer to. For solutions with a sequential flow, this terminology need not be interpreted as describing a specific order or sequence; for solutions with device structures, this terminology does not distinguish between matters of importance or positional relationships.

[0032] Furthermore, the terms “comprising,” “having,” and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may also include other steps or units that are not expressly listed but are inherent to these processes, methods, products, or devices, or steps or units added based on further optimizations of the inventive concept.

[0033] like Figures 1-3 As shown, this utility model discloses a novel limiter stamping die, which includes an upper die 1 and a lower die 2.

[0034] The upper module 1 includes an upper mold base 101, an upper pad 102, an upper clamping plate 103, a stop plate 104, and an upper ejector plate 105 arranged from top to bottom. The upper mold base 101, the upper pad 102, and the upper clamping plate 103 are fixedly connected in sequence. The upper ejector plate 105 is fixedly connected to the stop plate 104. An unloading mechanism 3 is provided between the upper ejector plate 105 and the upper mold base 101.

[0035] The lower module 2 includes a lower template 201, a lower pad 202 and a lower mold base 203 arranged sequentially from top to bottom. The lower mold base 203, the lower pad 202 and the lower template 201 are fixedly connected in sequence.

[0036] The bottom of the upper stripper plate 105 is provided with a first punch 4, a second punch 5, a third punch 6, a fourth punch 7 and a fifth punch 8 from left to right. The first punch 4 punches holes in the product material, the second punch 5 punches the product material into shape, the third punch 6 punches grooves in the product material, the fourth punch 7 bends the product material, and the fifth punch 8 separates the product from the material.

[0037] The upper ejector plate 105 at the bottom of the upper module 1 is provided with a first punch 4, a second punch 5, a third punch 6, a fourth punch 7, and a fifth punch 8, as shown above. Figure 2 As shown, punches 4, 5, 6, 7, and 8 are arranged sequentially from left to right, and the material conveyor belt also moves from left to right. Punching, shaping, groove punching, bending, and blanking (cutting) operations are performed sequentially at punches 4, 5, 6, 7, and 8. Due to the special shape of the product (C-shaped opening), the center distance at the opening end is easily deformed and exceeds tolerance during punching. This mold, in its punching step design, divides the product shape into three parts: first, punching the round hole; then, punching the inner and outer sides simultaneously; connecting the material conveyor belt at both C-shaped openings; bending; and finally cutting, ensuring the dimensional accuracy of the opening end position.

[0038] The unloading structure includes a limiting rod 301. The top of the upper mold base 101 is provided with a first limiting hole 302 extending from top to bottom. A first spring 303 is provided in the first limiting hole 302. The top end of the first spring 303 is fixedly connected to the first limiting hole 302, and the bottom end of the first spring 303 is fixedly connected to the limiting rod 301. The limiting rod 301 passes through the upper pad 102, the upper clamping plate 103, and the stop plate 104 in sequence and is fixedly connected to the upper release plate 105. The upper pad 102 and the upper clamping plate 103 are slidably connected to the limiting rod 301.

[0039] In the initial state of the first spring 303, there is a gap between the stop plate 104 and the upper clamping plate 103.

[0040] The unloading mechanism 3 described above fixes the upper mold base 101, the upper pad 102 and the upper clamping plate 103 into a whole in sequence. The stop plate 104 is fixed to the upper ejector plate 105 into a whole. A first limiting hole 302 is opened on the upper mold base 101 at the top. The limiting rod 301 passes through the first limiting hole 302 to the upper ejector plate 105 and passes through a through hole on the upper ejector plate 105. A first spring 303 is set in the first limiting hole 302. The limiting hole is plugged with a screw plug. One end of the first spring 303 abuts against the limiting rod 301 and the other end abuts against the screw plug. The first spring 303 is fixed in the first limiting hole 302. The limiting rod 301 is fixed to the upper ejector plate 105 into a whole.

[0041] Furthermore, in the initial state, there is a gap between the stop plate 104 and the upper clamping plate 103, and at this time, the limiting rod 301 extends through the bottom of the upper ejector plate 105. During the process of the upper module 1 and the lower module 2 approaching each other and applying pressure, the limiting rod 301 is pressed back into the first limiting hole 302, and at the same time, the first spring 303 deforms. After the upper module 1 and the lower module 2 separate, the first spring 303 returns to its original deformation and pushes the limiting rod 301 out of the upper ejector plate 105 to separate the material belt from the punch and complete the unloading operation.

[0042] In a further embodiment, the first punch 4 includes two guide hole punches 401 and four product punches 402. The two guide hole punches 401 are disposed on the upper template at positions corresponding to the inner side of the material strip edge. The four product punches 402 are divided into two groups, and the two groups of product punches 402 correspond to the hole positions at both ends of the C-shaped material products on the material strip.

[0043] The lower template 201 has a groove corresponding to the first punch 4.

[0044] There are two second punches 5, and the two second punches 5 are located on the upper template at positions corresponding to the material products on the upper and lower sides of the material belt;

[0045] The second punch 5 includes a first punch 501 in the shape of a 1 / 4 arc corresponding to the outer side of the material product, and another 1 / 4 arc structure is symmetrically arranged along the material belt traveling direction of the first punch 501. It also includes a second punch 502 in the shape of a 1 / 2 arc corresponding to the inner side of the material product. The two second punches 5 are symmetrically arranged in the center and correspond to the positions of the two rows of materials on the material belt respectively.

[0046] The lower template 201 has a groove corresponding to the second punch 5.

[0047] There are two third punches 6, and the two third punches 6 are located on the upper template at positions corresponding to the material products on the upper and lower sides of the material belt. The two third punches 6 are symmetrically arranged in the center.

[0048] The third punch 6 includes a first punching part 601 in the shape of a half-circle arc and a second punching part 602 in the shape of a half-circle arc. The first punching part 601 and the second punching part 602 are arranged concentrically, and a gap is provided between the first punching part 601 and the second punching part 602. The outer arc radius of the first punching part 601 is larger than the outer arc radius of the material product, and the inner arc radius of the second punching part 602 is smaller than the inner arc radius of the material product. The inner arc radius of the first punching part 601 is larger than the outer arc radius of the second punching part 602, forming a gap at the corresponding position of the material product.

[0049] The lower template 201 has a groove corresponding to the third punch 6.

[0050] There are two fourth punches 7, and the two fourth punches 7 are set on the upper template at positions corresponding to the material products on the upper and lower sides of the material belt. The two fourth punches 7 are symmetrically arranged in the center.

[0051] The fourth punch 7 has a rectangular cross-section, and its cross-section is larger than the outer arc diameter of the material product. The bottom of the fourth punch 7 has an arc-shaped structure, which is used to bend the material product.

[0052] The lower template 201 has a groove corresponding to the fourth punch 7.

[0053] The fifth punch 8 is provided in one form. The fifth punch 8 includes two punching parts. Each punching part includes a pressure plate 801 that is adapted to the inner arc of the material product, and a pressure rod 802 that extends from the pressure plate 801 toward the opening direction of the material product. The two punching parts are fixedly connected and are arranged symmetrically at the center.

[0054] The arrangement of the products punched out on the material belt by the first punch 4, the second punch 5, the third punch 6, the fourth punch 7, and the fifth punch 8 is as follows:

[0055] The first product is located on the bottom of the material conveyor belt with its C-shaped opening facing upwards. The second product has its C-shaped opening facing downwards, with the front end of the C-shaped opening inside the C-shaped opening of the first product and the tail end of the C-shaped opening of the first product inside the C-shaped buckle of the second product. The third product has its C-shaped opening facing upwards, with the front end of the C-shaped opening inside the C-shaped opening of the second product and the tail end of the C-shaped opening of the second product inside the C-shaped opening of the third product. The arrangement of subsequent products is the same.

[0056] The first punch 4, the second punch 5, the third punch 6, and the fourth punch 7 mentioned above are all provided in two sets. The first punch 4 is used to punch guide holes and product round holes on the material strip. Each set of first punches 4 includes one guide hole punch 401 and two product punch punches 402. The two guide hole punches 401 are respectively located above the inner side of the two sides of the material strip. The guide holes are punched in advance on the material strip to facilitate the subsequent insertion of the pin 12 into the guide holes to position the material strip. There are four product punch punches 402 in two sets. The two first punches 4 in the first set are used to punch the round holes at both ends of the product on the lower side of the material strip. The two first punches 4 in the second set are used to punch the round holes at both ends of the product on the upper side of the material strip.

[0057] In addition, the guide hole punch 401 is also provided with a set of guide hole punches 401 corresponding to the center position of the product. The guide hole is punched at the center position of the product. When the edge material is cut off during the subsequent punching process, the subsequent positioning is carried out through the guide hole at the center position of the product.

[0058] The second punch 5 mentioned above is used to punch out the shape of the product. The second punch 5 is set to be a first punch 501 with 1 / 4 arc on both sides and a second punch 502 with 1 / 2 arc. After punching one step distance on the material strip, the product is spliced ​​on the material strip to form a semi-circular shape. This can save the overall material cost of the cutting knife and inserts, and shorten the overall size of the mold.

[0059] The aforementioned third punch 6 is used to punch grooves in the product. The first punching part 601 and the second punching part 602 on the third punch 6 are concentric circles with the product, and both the first punching part 601 and the second punching part 602 are 1 / 2 arc structures. The outer arc radius of the first punching part 601 is larger than the outer arc radius of the product, and the inner arc radius of the second punching part 602 is smaller than the inner arc radius of the product. The inner arc radius of the first punching part 601 is larger than the outer arc radius of the second punching part 602, so that the first punching part 601 and the second punching part 602 have control in the middle of the product shape. When punching grooves, the first punching part 601 and the second punching part 602 press against the upper and lower sides of the product shape, punching grooves on the upper and lower sides of the product.

[0060] The aforementioned fourth punch 7 is used to bend the product. The upper stripper plate 105 is fixed with a square structure, and its bottom is provided with an arc-shaped structure that is recessed towards the upper stripper plate 105. Correspondingly, an insert with a corresponding arc is provided on the lower template 201, so that the product is bent by applying pressure from above and below.

[0061] The aforementioned fifth punch 8 includes two punching parts. The two punching parts are pressure plates 801 structures adapted to the inner arc shape of the product, which can cut off the position where the inner side of the product connects to the material strip. Pressure rods 802 are set on the side of the two punching parts that are close to each other. The pressure rods 802 and the pressure plates 801 form a "mountain" shaped structure. The two gaps of the punching parts correspond to the two ends of two adjacent products. The two ends of the product are embedded in the interior of the "mountain" shaped punching parts, and the remaining part is cut off by the fifth punch 8, thereby completing the punching of the entire product.

[0062] In a further embodiment, the upper module 1 is also provided with a push rod 9, which passes through the upper release plate 105, the stop plate 104, the upper clamping plate 103 and the upper pad plate 102 in sequence. The upper mold base 101 is provided with a second limiting hole 10, and the push rod 9 passes through the second limiting hole 10. A second spring 11 is provided in the second limiting hole 10. One end of the second spring 11 is fixedly connected to the push rod 9, and the other end of the second spring 11 is fixed in the second limiting hole 10.

[0063] The aforementioned ejector rod 9 is located at the tail end of the mold (the side where the material enters is the head end). A second limiting hole 10 is opened on the upper mold base 101. The ejector rod 9 passes through the second limiting hole 10 and exits the upper ejector plate 105. A second spring 11 is installed in the second limiting hole 10. The second limiting hole 10 is plugged with a screw plug, and the second spring 11 is fixed between the ejector rod 9 and the screw plug. During the process of the upper mold assembly 1 and the lower mold assembly 2 approaching and contacting each other, the ejector rod 9 compresses the second spring 11 and retracts into the second limiting hole 10. After separation, the second spring 11 returns to its original position, ejecting the ejector rod 9 and ejecting the product.

[0064] The upper module 1 is also provided with a pin 12, which passes through the upper release plate 105, the stop plate 104, the upper clamping plate 103 and the upper pad 102 in sequence. The upper mold base 101 is provided with a third limiting hole 13, and the pin 12 passes through the third limiting hole 13. A third spring 14 is provided in the third limiting hole 13. One end of the third spring 14 is fixedly connected to the pin 12, and the other end of the third spring 14 is fixed to the third limiting hole 13.

[0065] Multiple pins 12 are provided and spaced apart along the direction of material conveyor belt travel. For each punch, a third limiting hole 13 is opened on the upper die base 101. The pin 12 passes through the third limiting hole 13 and exits the upper ejector plate 105. A third spring 14 is provided in the third limiting hole 13 and the third limiting hole 13 is blocked by a screw plug. The third spring 14 is fixed between the pin 12 and the screw plug. During the process of the upper die group 1 and the lower die group 2 approaching each other, the part of the pin 12 that extends out of the upper ejector plate 105 first inserts into the guide hole punched out by the first punch hole to position the material conveyor belt. Then the punch contacts the material conveyor belt to perform the punching operation. After the punching is completed, the third spring 14 returns and pushes the pin 12 out again.

[0066] The lower module 2 is provided with multiple sets of sinking and floating pins 15. Each set of sinking and floating pins 15 includes two sinking and floating pin structures. The two sinking and floating pin structures are symmetrically arranged on both sides of the material belt. The sinking and floating pins 15 pass through the lower template 201 and the lower pad 202 from top to bottom. The lower mold base 203 is provided with a fourth limiting hole 16. A fourth spring 17 is provided in the fourth limiting hole 16. The bottom end of the sinking and floating pin 15 is fixedly connected to one end of the fourth spring 17, and the other end of the fourth spring 17 is fixedly connected to the fourth limiting hole 16.

[0067] The aforementioned sinker and float pins 15 are set in multiple sets. As the shape of the material strip changes after being punched, the sinker and float pins 15 are set in various ways. Initially, the material strip is a rectangular strip structure, and round sinker and float pins 15 are used for feeding and unloading. As the product shape on the material strip is punched, the sinker and float pins 15 are set to square sinker and float pins 15. At the last fifth punch 8, the sinker and float pins 15 are set to rectangular sinker and float pins 15. After the shape is cut, the traditional round sinker and float pins cannot be used for feeding. Only rectangular guide pins can be used for lifting and feeding to achieve the bending and cutting steps.

[0068] The above specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0069] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

[0070] The present invention has been described in a relatively specific and detailed manner above through general description and specific embodiments. It should be noted that, without departing from the concept of the present invention, various modifications and improvements can be made to these specific embodiments, all of which fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.

Claims

1. A novel limiter stamping die, comprising an upper die assembly and a lower die assembly spaced apart vertically, characterized in that: The bottom of the upper module is provided with a punch assembly, and the top of the lower module is provided with a punch groove that is compatible with the punch assembly. The punch assembly includes a first punch, a second punch, a third punch, a fourth punch, and a fifth punch arranged sequentially along the material conveyor belt travel direction. The first punch punches holes in the product material, the second punch punches the product material to form a shape, the third punch punches grooves in the product material, the fourth punch bends the product material, and the fifth punch separates the product from the material.

2. The novel limiter stamping die according to claim 1, characterized in that: The upper module includes an upper mold base, an upper pad, an upper clamping plate, a stop plate, and an upper release plate arranged from top to bottom. The upper mold base, the upper pad, and the upper clamping plate are fixedly connected in sequence, and the upper release plate is fixedly connected to the stop plate. The lower module includes a lower template, a lower pad, and a lower mold base arranged sequentially from top to bottom, and the lower mold base, lower pad, and lower template are fixedly connected in sequence.

3. The novel limiter stamping die according to claim 1, characterized in that: The first punch includes two guide hole punches and four product punches. The two guide hole punches are set on the upper template at positions corresponding to the inner edge of the material strip. The four product punches are divided into two groups, and the positions of the two groups of product punches correspond to the hole positions at both ends of the C-shaped material products on the material strip.

4. The novel limiter stamping die according to claim 1, characterized in that: There are two second punches, and the two second punches are set on the upper template at positions corresponding to the material products on the upper and lower sides of the material belt; The second punch includes a first punching part in the shape of a 1 / 4 arc corresponding to the outer side of the material product, and another 1 / 4 arc structure symmetrically arranged along the material belt traveling direction of the first punching part. It also includes a second punching part in the shape of a 1 / 2 arc corresponding to the inner side of the material product. The two second punches are symmetrically arranged at the center and correspond to the positions of the two rows of materials on the material belt, respectively.

5. A novel limiter stamping die according to claim 1, characterized in that: There are two third punches, and the two third punches are set on the upper template at positions corresponding to the material products on the upper and lower sides of the material belt. The two third punches are symmetrically arranged in the center. The third punch includes a first punching part in the shape of a half-circle arc and a second punching part in the shape of a half-circle arc. The first punching part and the second punching part are arranged concentrically, and a gap is provided between the first punching part and the second punching part. The outer arc radius of the first punching part is larger than the outer arc radius of the material product, and the inner arc radius of the second punching part is smaller than the inner arc radius of the material product. The inner arc radius of the first punching part is larger than the outer arc radius of the second punching part, forming a gap at the corresponding position of the material product.

6. The novel limiter stamping die according to claim 1, characterized in that: There are two fourth punches, and the two fourth punches are set on the upper template at positions corresponding to the material products on the upper and lower sides of the material belt. The two fourth punches are symmetrically arranged in the center. The fourth punch has a rectangular cross-section, which is larger than the outer arc diameter of the material product. The bottom of the fourth punch has an arc-shaped structure, which is used to bend the material product.

7. A novel limiter stamping die according to claim 1, characterized in that: The fifth punch is provided in one form, and the fifth punch includes two punching parts. Each punching part includes a pressure plate adapted to the inner arc of the material product, and a pressure rod extending from the pressure plate toward the opening of the material product. The two punching parts are fixedly connected and are arranged symmetrically at the center.

8. A novel limiter stamping die according to claim 1, characterized in that: The upper module is also provided with a push rod, which passes through the upper release plate, the stop plate, the upper clamping plate and the upper pad in sequence. A second limiting hole is opened in the upper mold base, and the push rod passes through the second limiting hole. A second spring is provided in the second limiting hole. One end of the second spring is fixedly connected to the push rod, and the other end of the second spring is fixed in the second limiting hole.

9. A novel limiter stamping die according to claim 1, characterized in that: The upper module is also provided with a pin, which passes through the upper release plate, the stop plate, the upper clamping plate and the upper pad in sequence. A third limiting hole is opened in the upper mold base, and the pin passes through the third limiting hole. A third spring is provided in the third limiting hole. One end of the third spring is fixedly connected to the pin, and the other end of the third spring is fixed to the third limiting hole.

10. A novel limiter stamping die according to claim 2, characterized in that: The lower module is provided with multiple sets of sinking and floating pins. Each set of sinking and floating pins includes two sinking and floating pin structures, which are symmetrically arranged on both sides of the material belt. The sinking and floating pins pass through the lower template and the lower pad from top to bottom. A fourth limiting hole is opened in the lower mold base. A fourth spring is provided in the fourth limiting hole. The bottom end of the sinking and floating pin is fixedly connected to one end of the fourth spring, and the other end of the fourth spring is fixedly connected to the fourth limiting hole.

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