A kind of pin cap processing technology

Abstract

The present application discloses a pin cap processing technology, which relates to the technical field of pin processing. The cap processing technology includes the following steps: S1: material selection; S2: grinding; S3: feeding; S4: cutting and forming; S5: rolling and forming; S6: discharging. In step S4-5, a processing device is used, which includes a top mold, a middle mold and a bottom mold. The bottom mold cooperates with the middle mold to perform cutting operations, and the top mold cooperates with the bottom mold to perform rolling and forming. Through the above processing technology, multiple pin caps can be produced at one time, thereby improving the shortcomings of cumbersome operation steps and low processing rate in the existing pin cap production.

Description

Technical Field

[0001] The present application relates to the technical field of pin processing, and in particular to a pin cap processing technology. Background Art

[0002] A safety pin is a flexible needle, usually made of metal, with one end fixed and the other end sharp and openable, usually fixed with a metal pin cap. Safety pins are often used to fix cloth or paper to fabric or to be used as emergency buttons on clothing to make oversized clothes fit.

[0003] In the currently commonly used pin cap processing technology, it is usually necessary to first cut the metal raw material into a metal sheet of a specific shape using a mold, and then use another mold to curl and press the metal sheet of the specific shape into a pin cap.

[0004] The above processing method needs to be divided into two processes of cutting and punching, which is complicated to operate and has low processing efficiency. Summary of the invention

[0005] In order to reduce the processing steps of the pin cap, the present application provides a pin cap processing process.

[0006] The present application provides a pin cap processing technology, which adopts the following technical solutions:

[0007] A pin cap processing technology comprises the following steps:

[0008] S1: material selection, metal flake raw materials are selected;

[0009] S2: grinding, grinding both sides of the sheet material to a specified smoothness;

[0010] S3: Feeding, transferring the sheet raw material to the processing table through the first transport mechanism

[0011] S4: Cutting and forming, the sheet material is placed in a processing device on a processing table, and the processing device cuts the sheet material to form a metal sheet material of a specific shape;

[0012] S5: rolling and forming, the processing device rolls the metal sheet raw material of the specific shape produced in S4 to form a pin cap;

[0013] S6: discharging, collecting the remaining portion of the pin cap sheet raw material produced by the processing device and transporting it away from the processing table through the second transport mechanism;

[0014] Wherein, the processing device includes a top mold, a middle mold and a bottom mold, the top mold is slidably arranged on one side of the processing table, and a plurality of molding ejector pins are arranged on the side of the top mold close to the processing table, and a driving member for driving the top mold to reciprocate toward and away from the processing table is arranged at one end of the top mold away from the processing table; the middle mold is slidably arranged between the processing table and the top mold, a plurality of cutting pieces are arranged on the side of the middle mold close to the processing table, and a linkage component for driving the middle mold to move by moving the top mold is arranged on the middle mold; the bottom mold is located between the processing table and the middle mold, and includes a cutting table and a molding seat located on the side of the cutting table close to the processing table; a cutting groove for inserting cutting pieces and passing molding ejector pins is opened on the cutting table, and a roll molding groove for plugging the molding ejector pins is arranged on the molding seat.

[0015] By adopting the above technical solution, the metal sheet raw material is polished to the required smoothness of the finished pin cap after the grinding treatment before processing, and then transported to the processing table by the first transmission mechanism. Under the processing of the processing device, the top mold is first driven downward so that the cutting piece on the middle mold and the cutting groove of the bottom mold cooperate to cut the metal sheet raw material into a number of metal sheets of a certain shape; the top mold continues to move downward, and the forming push rod set on the top mold pushes the metal sheet of a certain shape into the forming seat of the bottom mold. The metal sheet of a certain shape is pressed and rolled under the cooperation of the forming push rod and the rolling groove to obtain a number of individual pin caps. By using the above processing technology, multiple pin caps can be produced at one time, which improves the shortcomings of cumbersome operation steps and low processing rate in the existing pin cap production.

[0016] Optionally, a plurality of sliding sleeves are provided at one end of the middle mold close to the bottom mold, and a plurality of sliding rods sliding in the sliding sleeves are provided at one end of the cutting table close to the middle mold.

[0017] By adopting the above technical solution, the sliding rod on the cutting table slides in the sliding sleeve arranged on the middle mold, which limits the positional relationship of the middle mold relative to the bottom mold when sliding, reduces the possibility of the middle mold gradually deviating from the bottom mold during the sliding process, ensures the one-to-one positional relationship between the cutting piece and the cutting groove, and enables the cutting process to proceed smoothly.

[0018] Optionally, the sliding rod includes a limit platform close to one end of the bottom mold, and the outer diameter of the limit platform is larger than the inner diameter of the sliding sleeve.

[0019] By adopting the above technical solution, the outer diameter of the limit table is larger than the inner diameter of the sleeve, so that when the sleeve slides to abut against the limit table, it can limit the middle mold from continuing to move downward, thereby reducing the mechanical damage to the cutting table caused by the excessive downward movement of the middle mold under the influence of the top mold.

[0020] Optionally, a rotating shaft is provided at one end of the middle mold that rotates toward the top mold, and the linkage assembly includes a cam coaxially fixed on the rotating shaft. The top mold moves toward the middle mold to drive the cam to rotate to push the middle mold to move.

[0021] By adopting the above technical solution, when the top mold moves downward and contacts the protruding part of the cam, the cam is driven to rotate, so that the protruding part gradually approaches and contacts the middle mold, thereby driving the middle mold downward to perform the cutting operation.

[0022] Optionally, a first receiving groove for receiving a common cam is provided on the middle mold, and second receiving grooves for receiving a common cam are provided on both sides of the top mold.

[0023] By adopting the above technical solution, the opening of the first accommodating groove and the second accommodating groove enables the protruding portion of the cam to be accommodated in the first accommodating groove or the second accommodating groove when the processing device stops running, thereby reducing unnecessary damage to the cam caused by the top mold and the middle mold when not in operation.

[0024] Optionally, a connecting rod is provided at one end of the top mold close to the middle mold, the connecting rod passes through the middle mold and is slidably connected to the middle mold, and a limiting ring capable of counteracting the middle mold is provided at one end of the connecting rod away from the top mold.

[0025] By adopting the above technical solution, when the middle die is at the end of its stroke after the cutting operations are completed in sequence, the connecting rod and the limit ring are used to drive the middle die to reset; the connecting rod is slidably connected to the middle die, and when the top die is reset upward under the action of the driving member, the connecting rod moves upward, and the limit ring at one end of the connecting rod is against the middle die, driving the middle die to move back to the initial position together with the top die.

[0026] Optionally, a bracket is vertically fixed at one end of the processing table close to the bottom mold, and two support rods are spaced apart at one end of the bracket away from the bottom mold, and the axes of the support rods are perpendicular to the bracket; the linkage assembly also includes a rotating block arranged at one end of the rotating shaft, the rotating block includes a clamping part for clamping the rotating shaft and a rotating part with a travel groove, and the support rods slide in the travel groove.

[0027] By adopting the above technical solution, the rotating block arranged at one end of the rotating shaft is used to drive the rotating shaft to move, and the clamping part of the rotating block clamps the rotating shaft to realize the fixed connection between the rotating block and the rotating shaft; the support rod on the bracket slides in the travel groove of the rotating part, and when the middle mold moves upward under the drive of the connecting rod, the rotating part rotates under the support of the support rod to drive the rotating shaft to rotate, so that the protruding part of the cam rotates until it is against the top mold again, preparing for the next cutting operation.

[0028] Optionally, the clamping portion includes a first clamping member and a second clamping member, and the first clamping member and the second clamping member are provided with clamping bolts, and the clamping bolts pass through the first clamping member and are threadedly connected to the second clamping member.

[0029] By adopting the above technical solution, the first clamping member and the second clamping member realize a detachable connection between the rotating block and the rotating shaft through the clamping bolts, and tightening the clamping bolts can also adjust the clamping degree of the rotating block's clamping part on the rotating shaft.

[0030] Optionally, the distance between two relative inner walls of the roll forming groove gradually decreases in the direction away from the middle mold.

[0031] By adopting the above technical solution, the distance between the two relative inner walls of the roll forming groove gradually decreases in the direction away from the middle mold, so that a metal sheet of a specific shape can be extruded in the roll forming groove under the downward pressure of the forming ejector rod, thereby realizing the roll forming function of the forming seat.

[0032] In summary, the present application includes at least one of the following beneficial effects:

[0033] 1. The use of the processing device in the pin cap processing technology enables the metal sheet raw material to complete the cutting and curling forming in the processing device at one time and be processed into the pin cap finished product. Compared with the common pin cap processing technology, the processing steps are significantly reduced, which effectively improves the pin cap processing rate;

[0034] 2. In the process of producing pin caps using this processing technology, there is no need for manual material transfer and cutting operations, which reduces the accidental injury of operators by equipment during the pin cap processing operation;

[0035] 3. The setting of the linkage assembly and the upper limit ring of the connecting rod enables the processing device to achieve repeated processing operations by installing only one driving component, which reduces the production cost of the equipment and the processing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application;

[0037] Figure 2 is a partial exploded schematic diagram showing the separation of the top mold and the middle mold in an embodiment of the present application;

[0038] Figure 3 It is a partial schematic diagram showing the bottom mold structure of an embodiment of the present application;

[0039] Figure 4 It is a cross-sectional schematic diagram of the bottom mold of the embodiment of the present application being installed on the processing table.

[0040] Explanation of the reference numerals: 1. processing table; 11. bracket; 12. support rod; 2. processing device; 21. top mold; 211. forming top rod; 212. connecting rod; 213. limiting ring; 214. first accommodating groove; 22. middle mold; 221. cutting member; 222. sliding sleeve; 223. second accommodating groove; 23. bottom mold; 231. cutting table; 232. cutting groove; 233. sliding rod; 2331. limiting table; 234. forming seat; 2341. roll forming groove; 2342. discharge port; 24. rotating sleeve; 3. linkage assembly; 31. rotating shaft; 32. cam; 33. rotating block; 331. clamping part; 3311. first clamping member; 3312. second clamping member; 3313. clamping bolt; 332. rotating part; 3321. travel groove; 4. driving member. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-4 This application is described in further detail.

[0042] The present application discloses a pin cap processing technology, and the pin cap processing technology adopts the following technical solutions:

[0043] S1: material selection, metal flake raw materials are selected;

[0044] S2: grinding, grinding both sides of the sheet material to a specified smoothness; S3: feeding, transferring the sheet material to the processing table 1 through a first conveying mechanism, and the first conveying mechanism is a conveyor belt arranged on one side of the processing table 1.

[0045] S4: Cutting and forming. A processing device 2 is arranged on the processing table. The sheet material passes through the processing device 2 located on the processing table 1 through the first transmission mechanism. The processing device 2 cuts the sheet material to form a metal sheet material of a specific shape.

[0046] S5: rolling and forming, the processing device 2 rolls the metal sheet material of the specific shape produced in S4 to form a pin cap;

[0047] Reference Figure 1 and Figure 2 The processing device 2 includes a top mold 21, a middle mold 22 and a bottom mold 23. The top mold 21 is vertically slidably arranged above the processing table 1, and a plurality of forming ejector pins 211 are welded and fixed on one side of the top mold 21 close to the processing table 1. In the present embodiment, there are five forming ejector pins 211. An end of the top mold 21 away from the processing table 1 is connected to a driving member 4 for driving the top mold 21 to move toward or away from the processing table 1. In the present embodiment, the driving member 4 is specifically a cylinder fixed above the processing device.

[0048] Reference Figure 1 and Figure 2The middle mold 22 is slidably disposed between the processing table 1 and the top mold 21. The four corner positions of the middle mold 22 near the surface of the top mold 21 are fixedly connected with rotating sleeves 24. The axis direction of the rotating sleeve 24 is horizontal and perpendicular to the feeding direction, and the axes of two adjacent rotating sleeves 24 along the feeding direction coincide. A linkage assembly 3 is installed at one end of the middle mold 22 near the top mold 21. The linkage assembly 3 includes a rotating shaft 31 rotating in two coaxial rotating sleeves 24. A cam 32 located between the two coaxial rotating sleeves 24 is fixed on the outer wall of the rotating shaft 31. In other embodiments, it can also be a convex block of a reasonable size; the cam 32 is used to abut against the top mold 21 and the middle mold 22. The top mold 21 and the middle mold 22 are respectively provided with a first receiving groove 214 and a second receiving groove 223 for accommodating the protruding portion of the cam 32. When the processing device 2 is not working, the rotating shaft 31 can be rotated so that the protruding portion of the cam 32 is accommodated in the first receiving groove 214 or the second receiving groove 223, thereby reducing the unnecessary mechanical damage to the cam 32 caused by the middle mold 22 or the bottom mold 23 and the protruding portion of the cam 32.

[0049] Reference Figure 2 and Figure 3 When the protruding part of the cam 32 abuts against the bottom of the top die 21, the driving member 4 is started to drive the top die 21 downward, and the cam 32 rotates to abut against the end surface of the middle die 22 and drives the middle die 22 downward; a plurality of cutting pieces 221 are welded and fixed to one end of the middle die 22 away from the top die 21, and in this embodiment, there are five cutting pieces 221. The bottom die 23 is located between the processing table 1 and the middle die 22, and is fixed on the processing table 1; the bottom die 23 includes a cutting table 231 and a forming seat 234 located at the bottom of the cutting table 231, and the cutting table 231 is provided with cutting grooves 232 having the same number as the cutting pieces 221. The metal sheet raw material passes through the cutting table 231 and is cut into metal sheets of a specific shape under the cooperation of the cutting pieces 221 and the cutting grooves 232.

[0050] Reference Figure 2 and Figure 3A plurality of sliding sleeves 222 are fixed to the welding machine at one end of the middle mold 22 away from the top mold 21. In this embodiment, there are four sliding sleeves 222. Four sliding rods 233 are vertically fixed to one end of the cutting table 231 close to the middle mold 22, and the sliding rods 233 slide in the sliding sleeves 222 respectively. The sliding rods 233 include a limit table 2331 close to one end of the bottom mold 23, and the outer diameter of the limit table 2331 is larger than the inner diameter of the sliding sleeve 222 to limit the vertical movement distance of the middle mold 22. When the cutting piece 221 cooperates with the cutting groove 232 to cut the metal sheet raw material into a metal sheet of a specific shape, the forming push rod 211 gradually slides into the cutting piece 221; the top mold 21 continues to move downward to drive the cam 32 to rotate, and the cam 32 drives the middle mold 22 to move to the end of the stroke of the middle mold 22. At this time, the sliding sleeve 222 and the limit platform 2331 are against each other, and the cutting piece 221 pushes the metal sheet raw material of a specific shape from the cutting groove 232 into the bottom mold 23 for forming.

[0051] Reference Figure 1 and Figure 4 The forming seat 234 is provided with a roll forming groove 2341 corresponding to the cutting groove 232, and the distance between the two opposite inner walls of the roll forming groove 2341 gradually decreases toward the discharge port 2342; the end of the roll forming groove 2341 away from the cutting table 231 is connected to the discharge port 2342. The top mold 21 continues to move downward, and the forming push rod 211 passes through the cutting piece 221 and the cutting groove 232 in sequence and enters the roll forming seat 234. The forming push rod 211 presses the metal sheet of a specific shape into the roll forming groove 2341 for curling, and a pin cap is obtained.

[0052] Reference Figure 4 The discharge port 2342 is away from the end of the bottom mold 23 by setting a collection box to collect the pin caps. The top mold 21 descends to the end of the stroke, and the forming push rod 211 pushes the pin caps out of the bottom of the roll forming groove 2341 into the discharge port 2342, and the discharge port 2342 enters the collection box.

[0053] Reference Figure 1 and Figure 2 , a plurality of connecting rods 212 are vertically fixed to one end of the top mold 21 close to the middle mold 22. In this embodiment, there are four connecting rods, and the connecting rods 212 all pass through the middle mold 22 and are slidably connected to the middle mold 22; a limit ring 213 capable of abutting against the middle mold 22 is threadedly connected to one end of the connecting rod 212 away from the top mold 21. The driving member 4 drives the top mold 21 upward, and the connecting rods 212 drive the middle mold 22 upward to restore to the initial height.

[0054] The first transport mechanism continues to transport the unprocessed sheet material to the cutting table 231, and the processed sheet material is transferred to the second transport mechanism; the second transport mechanism is started, and the second transport mechanism transports the processed sheet material away from the processing table 1 for waste collection.

[0055] Reference Figure 2 and Figure 3 A bracket 11 is vertically welded and fixed to one end of the processing table 1 close to the bottom mold 23, and bolts are passed through the bracket 11, and the bracket 11 is fixed to the bottom mold 23 by the bolts; two support rods 12 are welded at intervals on one end of the bracket 11 away from the bottom mold 23, and the axis of the support rod 12 is perpendicular to the bracket 11; the linkage assembly 3 also includes a rotating block 33 arranged on the rotating shaft 31, and the rotating block 33 includes a clamping portion 331 for clamping the rotating shaft 31 and a rotating portion 332 with a travel groove 3321; the clamping portion 331 includes a first clamping member 3311 and a second clamping member 3312, and the first clamping member 3311 is provided with a clamping bolt 3313, and the clamping bolt 3313 passes through the first clamping member 3311 and is threadedly connected with the second clamping member 3312 to clamp the rotating shaft 31; the support rod 12 slides in the travel groove 3321. When the middle die 22 moves upward, the support rod 12 slides in the travel groove 3321, and the rotating block 33 rotates to drive the rotating shaft 31 to rotate until the protruding part of the cam 32 on the rotating shaft 31 abuts against the top die 21 again, preparing to drive the middle die 22 downward for the next cutting operation.

[0056] S6: Discharging, collecting the pin caps produced by the processing device 2, and the remaining sheet material is transported away from the processing table 1 through the second transport mechanism; the second transport mechanism is a conveyor belt arranged on the side of the processing table 1 away from the first transport mechanism or a winding roller for winding the sheet material.

[0057] The implementation principle of a pin cap processing process of the embodiment of the present application is as follows: the first transport mechanism transfers the sheet material to the cutting table 231, the driving member 4 drives the top die 21 downward, and indirectly drives the middle die 22 downward to cut the sheet material into a specific shape under the cooperation of the cutting member 221 and the cutting groove 232; the middle die 22 is continued to be driven downward to push the sheet material of the specific shape into the forming seat 234; the forming ejector 211 passes through the cutting member 221 and the cutting groove 232 in sequence, and the forming ejector 211 presses the metal sheet of the specific shape into the rolling groove 2341 for curling operation to obtain the pin cap; the top die 21 continues to descend to push the pin cap out of the discharge port 2342, and the pin cap is collected in the collecting box. The top die 21 is driven upward so that the top die 21 and the middle die 22 return to the initial height so as to repeat the above work; the remaining sheet material after processing is transported out of the cutting table 231 by the second transport mechanism.

[0058] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pin cap processing technology, characterized in that: The following steps are involved: S1: material selection, metal flake raw materials are selected; S2: grinding, grinding both sides of the sheet material to a specified smoothness; S3: feeding, transferring the sheet material to the processing table (1) through the first transport mechanism; S4: Cutting and forming, the sheet material is placed in a processing device (2) on a processing table (1), and the processing device (2) cuts the sheet material to form a metal sheet material of a specific shape; S5: rolling and forming, the processing device (2) rolls the metal sheet material of the specific shape produced in S4 to form a pin cap; S6: discharging, collecting the remaining portion of the pin cap sheet material produced by the processing device (2) and transporting it away from the processing table (1) through the second transport mechanism; The processing device (2) comprises a top mold (21), a middle mold (22) and a bottom mold (23); the top mold (21) is slidably arranged on one side of the processing table (1); a plurality of molding ejector pins (211) are arranged on a side of the top mold (21) close to the processing table (1); and a driving member (4) for driving the top mold (21) to reciprocate in a direction approaching and away from the processing table (1) is arranged on an end of the top mold (21) away from the processing table (1); The middle mold (22) is slidably arranged between the processing table (1) and the top mold (21); a plurality of cutting pieces (221) are arranged on a side of the middle mold (22) close to the processing table (1); and a linkage assembly (3) is arranged on the middle mold (22) for driving the middle mold (22) to move by moving the top mold (21); A rotating shaft (31) is rotatably arranged at one end of the middle mold (22) facing the top mold (21), and the linkage assembly (3) comprises a cam (32) coaxially fixedly arranged on the rotating shaft (31), and the top mold (21) moves in a direction toward the middle mold (22) to drive the cam (32) to rotate, thereby pushing the middle mold (22) to move; The bottom mold (23) is located between the processing table (1) and the middle mold (22), and comprises a cutting table (231) and a molding seat (234) located on the side of the cutting table (231) close to the processing table (1); the cutting table (231) is provided with a cutting groove (232) for inserting a cutting piece (221) and for a molding ejector rod (211) to pass through, and the molding seat (234) is provided with a roll molding groove (2341) for inserting the molding ejector rod (211).

2. A pin cap processing technology according to claim 1, characterized in that: A plurality of sliding sleeves (222) are arranged at one end of the middle mold (22) close to the bottom mold (23), and a plurality of sliding rods (233) sliding in the sliding sleeves (222) are arranged at one end of the cutting table (231) close to the middle mold (22).

3. A pin cap processing technology according to claim 2, characterized in that: The sliding rod (233) comprises a limiting platform (2331) close to one end of the bottom mold (23), and the outer diameter of the limiting platform (2331) is greater than the inner diameter of the sliding sleeve (222).

4. A pin cap processing technology according to claim 1, characterized in that: The middle mold (22) is provided with a first receiving groove (214) for receiving the cam (32), and the top mold (21) is provided with second receiving grooves (223) for receiving the cam (32) on both sides.

5. The pin cap processing technology according to claim 1, characterized in that: A connecting rod (212) is provided at one end of the top mold (21) close to the middle mold (22), the connecting rod (212) passes through the middle mold (22) and is slidably connected to the middle mold (22), and a limiting ring (213) capable of abutting against the middle mold (22) is provided at one end of the connecting rod (212) away from the top mold (21).

6. A pin cap processing technology according to claim 1, characterized in that: A bracket (11) is vertically fixedly disposed at one end of the processing table (1) close to the bottom mold (23); two support rods (12) are spaced apart at one end of the bracket (11) away from the bottom mold (23); the axes of the support rods (12) are perpendicular to the bracket (11); The linkage assembly (3) further comprises a rotating block (33) arranged at one end of the rotating shaft (31), the rotating block (33) comprising a clamping portion (331) for clamping the rotating shaft (31) and a rotating portion (332) having a travel groove (3321), and the support rod (12) slides in the travel groove (3321).

7. A pin cap processing technology according to claim 6, characterized in that: The clamping portion (331) comprises a first clamping member (3311) and a second clamping member (3312), wherein the first clamping member (3311) and the second clamping member (3312) are provided with clamping bolts (3313), and the clamping bolts (3313) pass through the first clamping member (3311) and are threadedly connected to the second clamping member (3312).

8. The pin cap processing technology according to claim 1, characterized in that: The distance between the two relative inner walls of the roll forming groove (2341) gradually decreases in the direction away from the middle mold (22).

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