Non-ribbed nail support and its production process and non-ribbed nail support mold

Abstract

The present invention discloses a ribless nail support seat and its production process and a ribless nail support seat mold, including an upper die seat, a lower die seat, an upper pad, an upper clamping plate, a stripping plate, a lower template, a lower pad, a guide column, a guide sleeve, a set screw, a strong spring, and a nail groove die. An upper pad is provided below the upper die seat, and an upper clamping plate is provided below the upper pad. The upper clamping plate also clamps and fixes a nail groove punch. The nail groove punch passes through the stripping plate and is opposite to the nail groove die set on the lower template. The nail groove die adopts a structure with a high middle part and low parts at both ends. The present invention can achieve accurate processing position and high processing precision when processing the ribless nail support seat, effectively improve the process quality control capability, reduce product defective rate, reduce damage to raw materials, reduce the generation of scrapped products, and save resources.

Description

Technical Field

[0001] The invention relates to the technical field of laparoscopic staplers, and in particular to a ribless anvil seat and a production process thereof, and a ribless anvil seat mould. Background Art

[0002] At present, with the advancement of science and technology, the continuous improvement of people's living standards and the rapid development of medical services, the demand for laparoscopic staplers is increasing. Staplers are devices used in clinical surgery to replace traditional manual suturing. They are easy to use, have tight sutures, are of appropriate tightness, and have few side effects and surgical complications. They can even achieve lesion resection in tumor patients. Therefore, they are favored and respected by clinical surgeons at home and abroad. With the gradual popularization of minimally invasive surgery and the expansion of medical insurance coverage, the stapler market has broad prospects.

[0003] Laparoscopic staplers are products with the lowest import substitution rate. Since the anvil is the core component of the stapler, whether the anvil can meet high quality requirements is crucial and ultimately determines the success or failure of the operation. However, in the prior art, the back side corresponding to the nail groove on the front side of the anvil needs to be ribbed to achieve this, otherwise it cannot be achieved. In this way, the excess material squeezed out needs to be removed by grinding or milling. In this process, metal burrs will inevitably remain, causing doctors to fall off burrs during surgery, inflammation after surgery, and increase the risk of medical accidents; secondly, the process of anvil with ribs has more than a dozen processes, which is difficult to control and relatively cumbersome. It is difficult to control the key size process, the product scrap rate is high, the material utilization is low, the defective rate is also high, and the production capacity is low, and it is impossible to increase the quality of stable products in large quantities. Summary of the invention

[0004] The purpose of the present invention is to provide a ribless nail seat and its production process and a ribless nail seat mold, which can accurately process the position and have high processing precision when processing the ribless nail seat, effectively improve the process quality control capability, reduce product defective rate, reduce damage to raw materials, reduce the generation of scrapped products, and save resources.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ribless nail support mold, comprising an upper mold base and a lower mold base, characterized in that it also includes an upper pad, an upper clamping plate, a stripping plate, a lower template, a lower pad, a guide column, a guide sleeve, a stop screw, a strong spring, and a nail groove die. An upper pad is provided below the upper mold base, an upper clamping plate is provided below the upper pad, a stripping plate is provided below the upper clamping plate, a lower template is provided above the lower pad, and a lower template is provided above the lower pad. The guide column passes through the upper clamping plate and the stripping plate in sequence and can be inserted into the guide sleeve. The guide sleeve is arranged on the lower template, the stop screw passes through the upper mold base, the upper pad and the upper clamping plate in sequence, and a strong spring is provided on the stop screw. The upper clamping plate also clamps and fixes a nail groove punch, and the nail groove punch passes through the stripping plate and is opposite to the nail groove die arranged on the lower template. The nail groove die adopts a structure with a high middle part and low parts at both ends.

[0006] Preferably, it also includes a guide needle, which is arranged on the stripping plate.

[0007] Preferably, it further comprises an upper limit column and a lower limit column, wherein the upper limit column is fixed to the upper die base, and the lower limit column is fixed to the lower die base.

[0008] Preferably, it also includes an equal-height force transmission pin, one end of which is fixed to the upper pad, the other end of which is fixed to the stripping plate, and the middle part of which passes through the upper clamping plate.

[0009] Preferably, the equal-height force transmission pin and the stripping plate are fixed by screws.

[0010] The present invention also provides a process for producing a ribless nail support, comprising the following steps, in order: [1] punching; [2] trimming; [3] chamfering; [4] trimming; [5] trimming and punching; [6] nail groove; [7] punching; [8] trimming; [9] chamfering;

[10] cutting the outer shape;

[11] punching the knife groove;

[12] flanging and leveling;

[13] rounding;

[14] reserving the outer shape;

[15] bending;

[16] bending;

[17] knife groove shaping;

[18] outer width shaping;

[19] flatness shaping;

[20] dropping the product;

[21] cutting the waste.

[0011] Preferably, the material strip is placed on a processing platform consisting of a plurality of workstations, and a rib-free nail support mold is installed on each workstation.

[0012] Preferably, after the material strip is placed, a positioning hole is punched into the material strip through step [1]. When the material strip moves to the second station, the guide pin of this station is inserted into the positioning hole to position the material strip. At the same time, the guide post of this station is inserted downward into the guide sleeve on the lower die seat, the upper die seat and the lower die seat begin to close, the stripper plate and the lower die plate are closed, and the material strip is tightened at the same time. When the punch press continues to press down, the punch clamped in the upper clamp begins to move downward and contact the material strip, and the material strip is subjected to step [2] trimming processing, and then moves to the next station in sequence, and finally completes steps [3] to

[21] processing.

[0013] Preferably, when the material strip is subjected to the nail groove pressing process in step [6], as the punch press continues to press downward, the nail groove punch clamped in the upper clamp plate begins to move downward and contact the material strip, and the material is squeezed into a nail groove shape by the nail groove punch and the nail groove pressing die. When the mold is fully closed, the shape of the nail groove is completely completed. When the punch press moves upward, the upper die seat and the lower die seat open, the guide column begins to separate from the guide sleeve, and the stripping plate is forcibly ejected by squeezing the equal-height force transmission pin through a strong spring. The nail groove punch is peeled off the material by the elastic force of the strong spring. When the punch press continues to move upward, the upper die seat and the lower die seat separate. When the punch press reaches the highest point, a stroke is completed, the mold is restored to its initial state, and the shape of the nail groove on the material strip is completed.

[0014] The present invention also provides a ribless nail support seat, which is produced by the ribless nail support seat mold and / or the ribless nail support seat production process.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention produces a ribless nail support through a ribless nail support mold and a ribless nail support production process, which removes the ribs, reduces the problem of burrs falling off during surgery, and avoids the risk of inflammation caused by postoperative infection.

[0017] 2. The present invention adopts designs such as guide pins and guide sleeves, guide pins and positioning holes, upper limit pins and lower limit pins to realize multiple positioning and fixation for the ribless nail seat mold. When processing the ribless nail seat, the processing position can be accurate and the processing precision is high, which effectively improves the process quality control capability, reduces the product defective rate, reduces the damage of raw materials, reduces the generation of scrapped products, and saves resources.

[0018] 3. The present invention adopts the design of equal-height force transmission pins and strong springs. When stripping materials, the strong springs can be used to extrude the equal-height force transmission pins, quickly push out the stripping plate, and the elastic force of the strong springs can be used to quickly peel the nail groove punch off the material. This can reduce residual metal burrs and improve product quality.

[0019] 4. The nail groove die structure of the present invention adopts an inclined design, that is, a structure with a high middle part and low ends. Because the force in the middle is the greatest during the nail groove pressing process, the material is not easy to flow, which will cause the size of the middle nail groove to be smaller. Therefore, if the middle is made high, the material will be subjected to greater force. To solve the problem that the middle size cannot be reached, it is necessary to increase the pressure ribs.

[0020] 5. The rib-free nail support seat mold of the present invention can be made into a nail groove shape through one process, while the existing rib-supported nail support seat needs more than ten processes to be made into a nail groove shape. The present invention can effectively improve the process quality control capability, control the product defective rate, reduce the damage of raw materials, reduce the generation of scrapped products, save resources, and improve production efficiency.

[0021] 6. The existing rib-type nail support adopts a single-process mold, while the present invention adopts a continuous progressive mold, which greatly improves the product process route, increases production efficiency, and realizes mass production.

[0022] 7. The present invention also adopts the design of an empty step process, and places the empty step process in the entire processing flow. When the mold design position between each step is insufficient, it can be filled by the empty step. In this way, the position actually used by the mold can be larger than the size of the mold itself. A certain position and structural change space can be reserved for the mold in advance. When the mold structure needs to change, it can be modified according to the reserved size.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front view of the ribbed anvil of the laparoscopic stapler currently on the market;

[0025] Figure 2 This is a reverse view of the ribbed anvil of the laparoscopic stapler currently on the market;

[0026] Figure 3 A front view of the rib-free anvil seat of the laparoscopic stapler processed according to the present invention;

[0027] Figure 4 A rear view of the non-pressure rib anvil seat of the laparoscopic stapler of the present invention;

[0028] Figure 5 It is the general assembly drawing of the process of the non-pressing rib abutment nail seat mold of the present invention;

[0029] Figure 6 It is a cross-sectional view of the mold for the nail support seat without pressure ribs of the present invention;

[0030] Figure 7 It is a cross-sectional view of the nail pressing groove die of the present invention;

[0031] Figure 8 This is a process diagram of the production process of the non-pressing rib anvil seat of the present invention;

[0032] Fig. 9 It is a schematic diagram of the position of the ribless anvil seat mold of the present invention in the ribless anvil seat production process general assembly diagram;

[0033] Fig.10 It is a schematic diagram of the cross-sectional position of the ribless dowel seat mold of the present invention in the ribless dowel seat production process general assembly diagram.

[0034] In the figure: 1. Upper die seat; 2. Upper pad; 3. Upper clamping plate; 4. Stripper plate; 5. Lower template; 6. Lower pad; 7. Lower die seat; 8. Lower pad; 9. Base; 10. Set screw; 11. Power spring; 12. Equal height force transmission pin; 13. Screw; 14. Upper limit column; 15. Lower limit column; 16. Guide column; 17. Guide sleeve; 18. Guide needle; 19. Nail groove punch; 20. Nail groove die. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] At present, the anvil seat of the laparoscopic stapler on the market is a ribbed anvil seat. Because the structure of the anvil seat of the laparoscopic stapler is relatively special, when processing it, it is necessary to increase the ribs to process the material strip into the anvil seat, such as Figure 1-2 As shown, it is the front view and the back view of the pressure rib anvil seat. Figure 2The distribution of ribs on the ribbed dowel seat can be clearly seen. However, this method of adding ribs requires removing excess extruded material through grinding or milling. In the process, metal burrs will inevitably remain, causing burrs to fall off during surgery and inflammation after surgery, increasing the risk of medical accidents. Secondly, the process of producing dowel seats with ribs has more than a dozen steps, which is difficult to control and is relatively cumbersome. It is difficult to control the key size process, has a high defect rate, and has a low production capacity, which cannot produce stable quality products in large quantities.

[0038] Based on this, the present invention processes a ribless nail support seat through a ribless nail support seat mold and / or a ribless nail support seat production process, such as Figure 3-4 The figure shows the front view and the back view of the anchor seat without pressure ribs. Figure 4 It can be clearly seen that there is no compression rib on the non-compression rib nail seat.

[0039] The present invention provides a rib-free nail support die, such as Figure 5-6 As shown, it includes an upper die base 1, a lower die base 7, an upper pad 2, an upper clamping plate 3, a stripping plate 4, a lower template 5, a lower pad 6, a guide column 16, a guide sleeve 17, a stop screw 10, a strong spring 11, and a nail groove die 20. An upper pad 2 is provided below the upper die base 1, an upper clamping plate 3 is provided below the upper pad 2, a stripping plate 4 is provided below the upper clamping plate 3, a lower template 5 is provided above the lower pad 6, and a lower template 5 is provided above the lower pad 6. The guide column 16 passes through the upper clamping plate 3 and the stripping plate 4 in sequence and can be inserted into the guide sleeve 17. The guide sleeve 17 is arranged on the lower template 5. The stop screw 10 passes through the upper die base 1, the upper pad 2, and the upper clamping plate 3 in sequence. A strong spring 11 is provided on the stop screw 10. The upper clamping plate 3 also clamps and fixes a nail groove punch 19. The nail groove punch 19 passes through the stripping plate 4 and is opposite to the nail groove die 20 arranged on the lower template 5.

[0040] Working principle: After the material strip is put into the mold, the punch press starts to press down, driving the guide column 16 to be inserted downward into the guide sleeve 17 on the lower mold plate 5, the upper mold base 1 and the lower mold base 7 begin to close, the stripper plate 4 and the lower mold plate 5 are closed, and the material strip is tightened at the same time. When the punch press continues to press down, the nail groove punch 19 clamped in the upper clamp plate 3 begins to move downward and contact the material strip, and the material is squeezed into a nail groove shape through the nail groove punch 19 and the nail groove pressing die 20. When the mold is completely closed, the nail groove The shape of the material is completely completed. When the punch moves upward, the upper die seat 1 and the lower die seat 7 are opened, the guide column 16 begins to separate from the guide sleeve 17, and the isoheight force transmission pin 12 is squeezed by the strong spring 11 to force the stripping plate 4 out. The nail groove punch 19 is peeled off from the material by the elastic force of the strong spring 11. When the punch continues to move upward, the upper die seat 1 and the lower die seat 7 are separated. When the punch reaches the highest point, a stroke is completed, the mold is restored to its initial state, and the shape of the nail groove on the material strip is completed.

[0041] In order to eliminate the ribs of the nail support and ensure that the nail grooves pressed out of the product are of qualified size, the nail groove die 20 is designed with an inclined structure, that is, a structure with a high middle part and low ends. Figure 7 As shown. Because the force in the middle is the greatest during the nail groove pressing process, the material is not easy to flow, which will cause the size of the middle nail groove to be smaller. Therefore, if the middle is made high, the material will be subjected to greater force. To solve the problem that the middle size cannot be reached, it is necessary to increase the pressure ribs.

[0042] In another embodiment of the present invention, in order to position the material strip, a guide needle 18 is further included, and the guide needle 18 is arranged on the stripping plate 4.

[0043] When working, first punch the positioning holes in the material strip, and then insert the guide pin 18 into the positioning holes for positioning in each processing step, and then punch, press the nail groove, trim, etc. There can be one or more positioning holes, and the number of the guide pins 18 corresponds to the number of the positioning holes.

[0044] In another embodiment of the present invention, an upper limit column 14 and a lower limit column 15 are further included. The upper limit column 14 is fixed to the upper die base 1, and the lower limit column 15 is fixed to the lower die base 7. The upper limit column 14 and the lower limit column 15 are used to limit the degree of closing between the upper die base 1 and the lower die base 7 to avoid excessive stamping of the nail groove punch 19 to damage the material strip, the lower template, the nail groove die and other structures; the design of the upper limit column 14 and the lower limit column 15 can also make the degree of stamping of the material strip by the nail groove punch 19 consistent each time, so that the size of the nail seat after final processing remains consistent, thereby improving the yield rate.

[0045] In another embodiment of the present invention, it also includes a symmetrical force transmission pin 12, one end of which is fixed to the upper pad 2, the other end of which is fixed to the stripping plate 4, and the middle of the symmetrical force transmission pin 12 passes through the upper clamping plate 3. The symmetrical force transmission pin 12 and the stripping plate 4 are fixed by screws 13. The purpose of such a structural design is that when stripping, the upper die base 1 and the lower die base 7 are opened, and the symmetrical force transmission pin 12 is squeezed by the strong spring 11 to forcefully push out the stripping plate 4, and the nail groove punch 19 is peeled off from the material by the elastic force of the strong spring 11.

[0046] In another embodiment of the present invention, in order to improve the stability of the mold, it also includes lower feet 8 and a base 9. The base 9 is arranged below the lower mold plate 5. A plurality of lower feet 8 are arranged between the base 9 and the lower mold plate 5.

[0047] The rib-free nail support mold of the present invention can be made into a nail groove shape through one process, while the existing rib-supported nail support mold needs more than ten processes to be made into a nail groove shape. The present invention can effectively improve the process quality control capability, control the product defective rate, reduce the damage of raw materials, reduce the generation of scrapped products, save resources, and improve production efficiency.

[0048] The present invention also provides a production process for a non-ribbed nail support, such as Figure 8-10 As shown, the process is as follows: [1] punching; [2] trimming; [3] chamfering; [4] trimming; [5] trimming and punching; [6] pressing nail groove; [7] punching; [8] trimming; [9] chamfering;

[10] cutting shape;

[11] punching knife groove;

[12] flanging and leveling;

[13] rounding;

[14] reserving cutting shape;

[15] bending;

[16] bending;

[17] knife groove shaping;

[18] outer width shaping;

[19] flatness shaping;

[20] dropping products;

[21] cutting waste.

[0049] In another embodiment of the present invention, the material strip is placed on a processing platform composed of a plurality of workstations, and a rib-free pin holder mold is installed on each workstation to form a continuous progressive die.

[0050] The existing rib-type nail holder adopts a single-process mold, while the present invention adopts a continuous progressive mold, that is, the molds of each process are assembled together according to the processing sequence, and the material is processed during the transmission process. The whole process is processed continuously, which greatly improves the product process route, improves production efficiency, and realizes mass production.

[0051] In another embodiment of the present invention, after the material strip is placed, a positioning hole is punched in the material strip through the punching step [1]. When the material strip moves to the second station, the guide pin 18 of this station is inserted into the positioning hole to position the material strip. At the same time, the guide post 16 of this station is inserted downward into the guide sleeve 17 on the lower die base 7, the upper die base 1 and the lower die base 7 begin to close, the stripping plate 4 and the lower die plate 5 are closed, and the material strip is tightened at the same time. When the punch press continues to press down, the punch clamped in the upper clamp 3 begins to move downward and contact the material strip, and the material strip is subjected to the trimming process of step [2], and then moves to the next station in sequence, and finally completes the processing of steps [3] to

[21] .

[0052] In another embodiment of the present invention, when the material strip is subjected to the step [6] of nail groove processing, as the punch press continues to press downward, the nail groove punch 19 clamped in the upper clamp plate 3 begins to move downward and contact the material strip, and the material is squeezed into a nail groove shape by the nail groove punch 19 and the nail groove pressing die 20. When the mold is fully closed, the shape of the nail groove is completely completed. When the punch press moves upward, the upper die seat 1 and the lower die seat 7 open, and the guide column 16 begins to separate from the guide sleeve 17. The high-pressure spring 11 squeezes the equal-height force transmission pin 12 to forcibly push out the stripping plate 4, and the nail groove punch 19 is peeled off from the material by the elastic force of the strong spring 11. When the punch press continues to move upward, the upper die seat 1 and the lower die seat 7 separate. When the punch press reaches the highest point, a stroke is completed, the mold is restored to its initial state, and the nail groove shape on the material strip is completed.

[0053] In another embodiment of the present invention, the present invention also adopts the design of the empty step process, and places the empty step process in the entire processing flow. When the mold design position between each step is insufficient, it can be filled by the empty step. In this way, the actual position of the mold can be larger than the size of the mold itself, and a certain position and structural change space can be reserved for the mold in advance. When the mold structure needs to change, it can be modified according to the reserved size. Figure 8 As shown, for example, two empty steps are designed between the trimming step [4] and the trimming and punching step [5]. When the structure of the mold of the trimming step [4] needs to be changed, it can be modified within the scope of the two empty steps.

[0054] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention 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 invention.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ribless nail support die, comprising an upper die base and a lower die base, characterized in that: It also includes an upper pad, an upper clamping plate, a stripping plate, a lower template, a lower pad, a guide column, a guide sleeve, a stop screw, a strong spring, and a nail groove die. An upper pad is provided below the upper die seat, an upper clamping plate is provided below the upper pad, a stripping plate is provided below the upper clamping plate, a lower template is provided below the lower pad, and a lower die seat is provided below the lower pad. The guide column passes through the upper clamping plate and the stripping plate in sequence and can be inserted into the guide sleeve. The guide sleeve is arranged on the lower template, the stop screw passes through the upper die seat, the upper pad and the upper clamping plate in sequence, and a strong spring is provided on the stop screw. The upper clamping plate also clamps and fixes the nail groove punch, and the nail groove punch passes through the stripping plate and is opposite to the nail groove die arranged on the lower template. The nail groove die adopts a structure with a high middle portion and low ends. It also includes a uniform height force transmission pin, one end of which is fixed to the upper pad, the other end of which is fixed to the stripper plate, and the middle part of which passes through the upper clamping plate; It also includes an upper limit column and a lower limit column, wherein the upper limit column is fixed to the upper die base, and the lower limit column is fixed to the lower die base.

2. The ribless nail support die according to claim 1, characterized in that: Also included is a guide needle disposed on the stripper plate.

3. The rib-free nail support die according to claim 1, characterized in that: The equal height force transmission pin and the stripping plate are fixed by screws.

4. A production process for a non-pressing rib abutment, characterized in that: The method comprises the following steps, in order: [1] punching; [2] trimming; [3] chamfering; [4] trimming; [5] trimming and punching; [6] pressing nail grooves; [7] punching; [8] trimming; [9] chamfering; [10] cutting the outer shape; [11] punching the knife groove; [12] flanging and leveling; [13] rounding; [14] reserving the outer shape; [15] bending; [16] bending; [17] knife groove shaping; [18] outer width shaping; [19] flatness shaping; [20] dropping products; [21] cutting waste materials; When the material strip is subjected to the step [6] of pressing the nail groove, the non-pressure rib nail seat mold described in any one of claims 1 to 3 is used for processing. When the punch press continues to press down, the nail groove punch clamped in the upper clamp plate begins to move downward and contact the material strip, and the material is squeezed into a nail groove shape by the nail groove punch and the nail groove die. When the mold is fully closed, the shape of the nail groove is completely completed. When the punch press moves upward, the upper die seat and the lower die seat open, and the guide column begins to separate from the guide sleeve. The stripping plate is forcibly ejected by squeezing the equal-height force transmission pin through a strong spring, and the nail groove punch is peeled off from the material by the elastic force of the strong spring. When the punch press continues to move upward, the upper die seat and the lower die seat separate. When the punch press reaches the highest point, a stroke is completed, the mold is restored to its initial state, and the shape of the nail groove on the material strip is completed.

5. The process for producing a ribless anvil according to claim 4, characterized in that: The material strip is placed on a processing platform consisting of multiple workstations, and a non-rib pin holder mold is installed on each workstation.

6. The process for producing a ribless anvil according to claim 4, characterized in that: After the material strip is placed, a positioning hole is punched in the material strip through step [1]. When the material strip moves to the second station, the guide pin of this station is inserted into the positioning hole to position the material strip. At the same time, the guide pin of this station is inserted downward into the guide sleeve on the lower die seat. The upper die seat and the lower die seat begin to close, and the stripper plate and the lower die plate are closed. At the same time, the material strip is clamped. When the punch press continues to press down, the punch clamped in the upper clamping plate begins to move downward and contact the material strip. The material strip is trimmed in step [2] and then moved to the next station in sequence. Finally, steps [3] to [21] are completed.

7. A nail support without pressure ribs, characterized in that: It is produced by the production process of the pressure-free nail support seat as described in any one of claims 4-6.

Images