阅读说明：本技术 一种凤尾链全自动扣链机 (Full-automatic chain machine of detaining of phoenix tail chain ) 是由 吴玺 聂玉龙 孙春梅 于 2019-09-25 设计创作，主要内容包括：本发明公开了一种凤尾链全自动扣链机,其技术方案要点是：包括冲床,冲床连接有工作台,工作台连接有成型机构和扣链机构,成型机构包括上模座、上模、下模座和下模,上模下端沿料带的移动方向依次固定连接有两个拉伸冲头、两个冲切连接孔的第一冲头和两个使链节成型的第二冲头,下模上端沿料带的移动方向依次贯穿有两个拉伸孔、两个第一冲孔和两个第二冲孔,两个拉伸冲头分别插入拉伸孔内,两个第一冲头分别插入第一冲孔内,两个第二冲头分别插入第二冲孔内,两个拉伸冲头下端与料带上端的两侧接触。本发明的结构合理,利用拉伸冲头对料带施加朝向两侧的力而使料带展平,使料带在加工链节的过程中,链节的尺寸不易发生变化。(The invention discloses a full-automatic chain buckling machine for a phoenix tail chain, which has the technical scheme that: including the punch press, the punch press is connected with the workstation, the workstation is connected with forming mechanism and chain fastening mechanism, forming mechanism includes the upper die base, go up the mould, die holder and lower mould, it has two tensile drifts to go up the mould lower extreme along the moving direction in material area fixedly connected with in proper order, the first drift and two second drifts that make the chain link shaping of two die-cut connecting holes, the lower mould upper end has run through in proper order along the moving direction in material area has two tensile holes, two first punches a hole and two second punches a hole, two tensile drifts insert respectively in the tensile hole, two first drifts insert respectively in the first punch a hole, two second drifts insert respectively in the second punch a hole, two tensile drift lower extremes and the both sides contact of material. The chain link flattening device is reasonable in structure, the stretching punch is used for applying force towards two sides to the material belt to flatten the material belt, and the size of the chain link is not easy to change in the process of machining the chain link of the material belt.)

1. The utility model provides a full-automatic chain machine of buckleing of phoenix tail chain, includes punch press (1), punch press (1) is connected with workstation (11), its characterized in that: the forming mechanism (2) comprises an upper die base (21) connected with a sliding block of the punch press (1), an upper die (22) connected to the lower end of the upper die base (21), a lower die base (23) fixed to the upper end of the forming mechanism (11) and a lower die (24) fixed to the upper end of the lower die base (23), wherein the lower end of the upper die (22) is sequentially and fixedly connected with two stretching punches (221), two first punches (222) for punching connecting holes and two second punches (223) for forming chain links along the moving direction of the material strip, the upper end of the lower die (24) is sequentially penetrated with two stretching holes (241), two first punched holes (242) and two second punched holes (243) along the moving direction of the material strip, the two stretching punches (221) are respectively inserted into the stretching holes (241), and the two first punches (222) are respectively inserted into the first punched holes (242), the two second punches (223) are respectively inserted into the second punched holes (243), and the lower ends of the two stretching punches (221) are in contact with two sides of the upper end of the material belt.

2. The full-automatic chain buckling machine for the phoenix tail chain according to claim 1, which is characterized in that: go up mould (22) lower extreme and be connected with location drift (224) and locating lever (225) along the moving direction in material area, location drift (224) and locating lever (225) are located between first drift (222) and second drift (223), lower mould (24) upper end is run through have with location drift (224) complex location punch a hole (244), lower mould (24) upper end is run through have with locating lever (225) complex locating hole (245), locating lever (225) lower terminal surface is less than location drift (224) lower terminal surface.

3. The full-automatic chain buckling machine for the phoenix tail chain according to claim 2, characterized in that: and a positioning wedge-shaped surface (2251) is arranged at the edge of the lower end of the positioning rod (225).

4. The full-automatic chain buckling machine for the phoenix tail chain according to claim 1, which is characterized in that: a cutting punch (226) is connected to the position, far away from the first punch (222), of the lower end of the upper die (22), and a cutting hole (246) matched with the cutting punch (226) penetrates through the upper end of the lower die (24).

5. The full-automatic chain buckling machine for the phoenix tail chain according to claim 4, characterized in that: the lower end surface of the cutting punch (226) is higher than the lower end surface of the second punch (223).

6. The full-automatic chain buckling machine for the phoenix tail chain according to claim 4, characterized in that: go up a plurality of guide bars (25) of mould (22) lower extreme fixedly connected with, guide bar (25) are connected with jointly along its gliding pressure strip (26) from top to bottom, guide bar (25) all cup joint drive pressure strip (26) downwardly moving's guide spring (27), the upper end and last mould (22) lower extreme butt of guide spring (27), the lower extreme and the pressure strip (26) upper end butt of guide spring (27), tensile drift (221), first drift (222), location drift (224), second drift (223) and cut off drift (226) all pass pressure strip (26).

7. The full-automatic chain buckling machine for the phoenix tail chain according to claim 1, which is characterized in that: the utility model discloses a separation of chain link and separation of punch block (2231), including second punch head (223) lower extreme, second punch head (223) lower extreme all is provided with make the chain link rather than the separating mechanism (3) that breaks away from, separating mechanism (3) include with second punch head (223) separation piece (31) of sliding connection and promote separation piece (31) separating spring (32) of downstream, separating groove (2231) have been seted up to second punch head (223) lower extreme, separating block (31) are arranged in separating groove (2231) and are slided from top to bottom, and separating spring (32) are arranged in separating groove (2231) and its upper end and separating groove (2231) upper end butt, separating spring (32) lower extreme and separating block (31) upper end butt.

8. The full-automatic chain buckling machine for the phoenix tail chain according to claim 1, which is characterized in that: the blanking mechanism (4) is connected with the workbench (11) and used for driving the formed chain links to move, the blanking mechanism (4) comprises two blanking rods (41), a rotary table (44) rotationally connected with the workbench (11), a connecting rod (43) rotationally connected with the rotary table (44) and a motor (45) driving the rotary table (44) to rotate, one end, far away from a base (23) of the lower die (24), of each blanking rod (41) is jointly connected with a connecting block (42) connected with the workbench (11) in a sliding manner, one end, far away from the rotary table (44), of each connecting rod (43) is hinged with the corresponding connecting block (42), a first blanking groove (247) and a second blanking groove (248) which are respectively communicated with one second punched hole (243) are formed in the upper end of the lower die (24), the second blanking groove (248) is located on one side, close to the rotary table (44), of the first blanking groove (247), and the bottom surface of the second blanking groove (248) is lower than the bottom surface, the side wall of the lower die holder (23) far away from the rotary table (44) penetrates through a first sliding groove (2471) communicated with the first blanking groove (247), the bottom surface of the first sliding groove (2471) is overlapped with the bottom surface of the first blanking groove (247), one blanking rod (41) is inserted into the first sliding groove (2471) to slide, the side wall of the lower die (24) holder (23) far away from the rotary table (44) penetrates through a second sliding groove (2481) communicated with the second blanking groove (248), the bottom surface of the second sliding groove (2481) is overlapped with the bottom surface of the second blanking groove (248), and the other blanking rod (41) is inserted into the second sliding groove (2481) to slide.

9. The full-automatic chain buckling machine for the phoenix tail chain according to claim 8, characterized in that: a first chip removal hole (231) and a second chip removal hole (232) penetrate through the upper end face of the lower die (24) seat (23) respectively, the first chip removal hole (231) is communicated with the stretching hole (241), the first punched hole (242) and the positioning punched hole (244), and the second chip removal hole (232) is communicated with the cutting hole (246).

Technical Field

The invention belongs to a punch press, and particularly relates to a full-automatic chain buckling machine for a phoenix tail chain.

Background

The phoenix tail chain is whole to be the U font, and it runs through and has seted up two connecting holes, and the assembly method of phoenix tail chain on the existing market mainly directly assembles through the manual work, along with the increase of market demand, also increases day by day to the production demand of phoenix tail chain, and current manual assembly is inefficient, damages the material easily in the assembling process, also scratches the hand easily, and labour is with high costs, has caused a large amount of wastes of material.

Chinese patent CN105537500B discloses an automatic assembling machine of phoenix tail chain, and its technical essential is: including the feeding mechanism who is used for carrying the raw materials, with raw materials punching press horizontal model piece punching press mechanism, push mechanism, be used for rotatory horizontal or vertical rotary mechanism, toggle mechanism and the pulling mechanism with the phoenix tail chain pulling backward of model piece, rotary mechanism has two first draw-in grooves that are used for the vertical model piece of joint and two third draw-in grooves that are used for the horizontal model piece of joint, first draw-in groove and third draw-in groove can be followed rotary mechanism's rotation center and rotated, push mechanism includes vertical direction interval arrangement's first propelling movement layer and second propelling movement layer, first propelling movement layer and second propelling movement layer are used for propelling movement horizontal model piece and make horizontal model piece and vertical model piece meet in series and cooperate, toggle mechanism is used for stirring horizontal model piece, pulling mechanism is used for the pulling phoenix tail chain backward.

Above-mentioned scheme is direct with chain link stamping forming when the punching press, and the material area is scroll-like before getting into punching press mechanism, and its whole part can appear the partial bending, can lead to the size of the chain link of punching press to keep unanimous when directly punching the material area this moment to influence the quality of the product of punching press.

Therefore, a new technical solution is needed to solve the above problems.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a full-automatic buckling chain machine for a phoenix tail chain, which can keep a material belt parallel to a horizontal plane when the material belt enters a forming mechanism, so that the size of a processed chain link cannot be influenced.

In order to achieve the purpose, the invention provides the following technical scheme: a full-automatic chain buckling machine for a phoenix tail chain comprises a punch press, wherein the punch press is connected with a workbench, the workbench is connected with a forming mechanism and a chain buckling mechanism, the forming mechanism comprises an upper die base connected with a sliding block of the punch press, an upper die connected with the lower end of the upper die base, a lower die base fixed at the upper end of the workbench and a lower die fixed at the upper end of the lower die base, the lower end of the upper die is fixedly connected with two stretching punches, a first punch for punching connecting holes and two second punches for forming chain links in sequence along the moving direction of the material belt, two stretching holes, two first punched holes and two second punched holes sequentially penetrate through the upper end of the lower die along the moving direction of the material belt, the stretching punches are respectively inserted into the stretching holes, the first punches are respectively inserted into the first punched holes, the second punches are respectively inserted into the second punched holes, and the lower ends of the stretching punches are in contact with two sides of the upper end of the material belt.

By adopting the technical scheme, when the chain link is processed, the punch applies downward force to the two sides of the material belt, the material belt is flattened towards the two sides, the material belt cannot be bent in subsequent processing, the size of the processed chain link is not easy to change, and the quality of the processed chain link is not easy to influence.

The invention is further configured to: the lower end of the upper die is connected with a positioning punch and a positioning rod along the moving direction of the material belt, the positioning punch and the positioning rod are located between the first punch and the second punch, the upper end of the lower die penetrates through a positioning hole matched with the positioning rod, and the lower end face of the positioning rod is lower than the lower end face of the positioning punch.

Through adopting above-mentioned technical scheme, utilize the displacement distance of locating lever to the material area to fix a position at the in-process that the material area was carried, make the material area keep the same at every turn displacement's distance to the size that makes the chain link of processing out is difficult for producing the change.

The invention is further configured to: and a positioning wedge-shaped surface is arranged at the edge of the lower end of the positioning rod.

Through adopting above-mentioned technical scheme, when the distance that the material area removed at every turn appears the minor change, utilize the location wedge to guide the position in material area, make the locating lever still can pass the downthehole that the location drift processed, the position of connecting hole can not change on the chain link that processes this moment to the size that makes the chain link that processes is difficult for receiving the influence.

The invention is further configured to: the lower end of the upper die is connected with a cutting punch at a position far away from the first punch, and a cutting hole matched with the cutting punch penetrates through the upper end of the lower die.

Through adopting above-mentioned technical scheme, the utilization cuts off the drift and cuts off the material area, no longer need cut off the material area this moment when retrieving the material area of processing, also no longer need carry out the rolling to the material area after processing simultaneously to the course of working of messenger's chain link is more convenient.

The invention is further configured to: the lower end face of the cutting punch is higher than the lower end face of the second punch.

Through adopting above-mentioned technical scheme, utilize the second drift to take shape the chain link earlier, the chain link can not receive the pulling force that cuts off the drift and exert and produce the removal at the shaping in-process material belt to make the size of chain link can not receive the influence.

The invention is further configured to: the upper die is characterized in that the lower end of the upper die is fixedly connected with a plurality of guide rods, the guide rods are jointly connected with a pressing plate which slides up and down along the guide rods, the guide rods are all sleeved with guide springs which drive the pressing plate to move downwards, the upper ends of the guide springs are abutted to the lower end of the upper die, the lower ends of the guide springs are abutted to the upper end of the pressing plate, and the stretching punch, the first punch, the positioning punch, the second punch and the cutting punch all penetrate through the pressing plate.

Through adopting above-mentioned technical scheme, utilize the pressure strip to compress tightly the material area, make the material area be difficult for producing because of the atress and remove at the in-process of processing, make the process of processing out the chain link in material area more stable.

The invention is further configured to: the second drift lower extreme all is provided with the separating mechanism who makes the chain link rather than breaking away from, separating mechanism includes the separation piece of being connected with the second drift slides and promotes the separation spring that the separation piece moved down, the separating tank has been seted up to second drift lower extreme, the separation piece is arranged in the separating tank and is slided from top to bottom, and the separation spring is arranged in the separating tank and its upper end and separating tank upper end butt, separation spring lower extreme and separating block upper end butt.

Through adopting above-mentioned technical scheme, after the chain link shaping, utilize the separation piece to exert decurrent thrust to the chain link, make chain link and second drift break away from the connection, the condition of chain link and second drift joint can not appear this moment to make the course of working of chain link be difficult for receiving the influence.

The invention is further configured to: the working table is connected with a blanking mechanism for driving the formed chain link to move, the blanking mechanism comprises two blanking rods, a rotary table rotationally connected with the working table, a connecting rod rotationally connected with the rotary table and a motor for driving the rotary table to rotate, one end of each blanking rod, far away from the lower die holder, is jointly connected with a connecting block slidably connected with the working table, one end, far away from the rotary table, of each connecting rod is hinged with the connecting block, the upper end of each lower die block is provided with a first blanking groove and a second blanking groove which are respectively communicated with a second punched hole, the second blanking groove is positioned on one side, close to the rotary table, of the first blanking groove, the bottom surface of the second blanking groove is lower than the bottom surface of the first blanking groove, a first sliding groove communicated with the first blanking groove penetrates through the side wall, far away from the rotary table, of the lower die holder, the bottom surface of the first sliding groove is coincident with, and a second sliding groove communicated with the second blanking groove penetrates through the side wall, far away from the turntable, of the lower die holder, the bottom surface of the second sliding groove is superposed with the bottom surface of the second blanking groove, and the other blanking rod is inserted into the second sliding groove to slide.

Through adopting above-mentioned technical scheme, fall into first unloading groove and second unloading inslot respectively after the second drift makes the chain link shaping in, later utilize two unloading poles to promote the chain link and move in first sliding groove and the second sliding groove, carry out subsequent processing.

The invention is further configured to: the upper end face of the lower die base is respectively penetrated with a first chip removal hole and a second chip removal hole, the first chip removal hole is communicated with the stretching hole, the first punching hole and the positioning punching hole, and the second chip removal hole is communicated with the cutting hole.

Through adopting above-mentioned technical scheme, utilize first chip removal hole to collect the tiny piece that separates from the material area, make the piece can not drop at will, utilize the second chip removal hole to collect the material area that has amputated the chain link simultaneously, be used for subsequent processing with the material area.

In conclusion, the invention has the following beneficial effects:

1. downward pressure is applied to the two sides of the material belt by utilizing the stretching blocks, so that the upper end surface of the material belt is flattened, and the size of a chain link cannot be influenced when the chain link is processed;

2. the chain link connected with the second punch is applied with downward thrust by the separation mechanism, so that the chain link cannot be clamped with the second punch, and subsequent processing of the chain link cannot be influenced.

Drawings

FIG. 1 is a perspective view of the present embodiment;

FIG. 2 is a schematic view illustrating a structure of an upper mold according to the present embodiment;

FIG. 3 is a schematic view of the present embodiment for illustrating a lower mold structure;

fig. 4 is an enlarged view of a portion a of fig. 2.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model provides a full-automatic chain machine of phoenix tail chain, as shown in figure 1, including punch press 1, punch press 1 uses bolted connection to have workstation 11, and it still is connected with carries out fashioned forming mechanism 2 and the fashioned chain mechanism 5 of messenger's phoenix tail chain to the chain link of phoenix tail chain, and forming mechanism 2 includes and uses bolted connection's upper die base 21 with the slider of punch press 1, connects the last mould 22 of ordering in upper die base 21, uses the lower bolster 23 of bolted fixation in the upper end of workstation 11 and uses the lower mould 24 of bolted fixation in the upper end of lower bolster 23. As shown in fig. 2, two rectangular drawing punches 221, a first punch 222 for punching two connecting holes of the links, and a second punch 223 for molding the links are welded to the lower end of the upper die 22 in this order along the moving direction of the material tape. As shown in fig. 3, two drawing holes 241, two first punched holes 242, and two second punched holes 243 are sequentially formed through the upper end of the lower die 24 in the moving direction of the tape. The two drawing punches 221 are respectively inserted into the drawing holes 241, the lower ends of the two drawing punches 221 are respectively contacted with the two sides of the upper end of the material strip, the two second punches 223 are respectively inserted into the second punched holes 243, and the two first punches 222 are respectively inserted into the first punched holes 242. When the chain link is processed, the stretching punch 221 applies downward force to the two sides of the material belt, the material belt is flattened by the force towards the two sides, the material belt cannot be bent in subsequent processing, the size of the processed chain link is not easy to change, and the quality of the processed chain link is not easy to influence.

As shown in fig. 2 and 3, since the material belt cannot be moved by the same distance during the conveying process, the positions of the connecting holes of the machined links cannot be kept consistent. Therefore, the pilot punch 224 and the pilot rod 225 are connected to the lower end of the upper die 22 in the moving direction of the tape, the pilot punch 224 and the pilot rod 225 are positioned between the first punch 222 and the second punch 223, the pilot punch 224 is close to the first punch 222, and the lower end surface of the pilot rod 225 is lower than the lower end surface of the pilot punch 224. A positioning punched hole 244 engaged with the positioning punch 224 and a positioning hole 245 engaged with the positioning rod 225 penetrate through the upper end of the lower die 24, the lower end of the positioning punch 224 is inserted into the positioning punched hole 244, and the lower end of the positioning rod 225 is inserted into the positioning hole 245. The moving distance of the material belt is positioned by the positioning rod 225 in the material belt conveying process, so that the moving distance of the material belt is kept the same every time, and the size of the processed chain link is not easy to change.

As shown in fig. 2, it is troublesome to manually adjust the position of the adjustment after the moving distance of the tape changes. Therefore, a positioning wedge surface 2251 is formed at the lower end edge of the positioning rod 225, and one end of the positioning wedge surface 2251, which is far away from the axis of the positioning rod 225, is inclined toward the upper die 22. When the distance that the material area moved each time appears the slight change, utilize location wedge 2251 to guide the position of material area, make locating lever 225 still can pass the downthehole that the location drift 224 processed, the position of the connecting hole on the chain link that the processing was made this moment can not change to the size that makes the chain link that the processing was made is difficult for receiving the influence.

As shown in fig. 2 and 3, the tape needs to be continuously recycled after the chain links are molded, and the processed tape cannot be directly recycled, so that the processed tape needs to be cut by punching. Therefore, the cutting punch 226 is welded to the lower end of the upper die 22 away from the first punch 222, the cutting hole 246 engaged with the cutting punch 226 is formed through the upper end of the lower die 24, and the cutting punch 226 is inserted into the cutting hole 246. Utilize and cut off drift 226 and cut off the material area, no longer need cut off the material area this moment when retrieving the material area of processing, also no longer need carry out the rolling to the material area after processing simultaneously to make the course of working of chain link more convenient.

Since the strip of material is pulled toward the cutting punch 226 when the cutting punch 226 cuts the strip of material, the strip of material is moved toward the cutting punch 226, which affects the size of the molded links. Therefore, the lower end surface of the cutting punch 226 is higher than the lower end surface of the second punch 223, the second punch 223 is used for forming the chain link, the belt cannot be moved by the pulling force applied by the cutting punch 226 in the forming process of the chain link, and the size of the chain link cannot be influenced.

As shown in fig. 2, when the material tape is punched, the material tape moves when receiving a punching force, which affects the dimensional accuracy of the processing. Therefore, the lower end of the upper die 22 is connected with two guide rods 25 by bolts, and the two guide rods 25 are jointly penetrated by a pressing plate 26 which slides up and down along the guide rods. The guide rods 25 are respectively sleeved with a guide spring 27 which drives the pressing plate 26 to move downwards, the upper end of the guide spring 27 is abutted with the lower end of the upper die 22, and the lower end of the guide spring 27 is abutted with the upper end of the pressing plate 26. The drawing punch 221, the first punch 222, the pilot punch 224, the second punch 223, and the cutting punch 226 slide up and down through the pressing plate 26, and the pilot rod 225 is welded to the lower end surface of the pressing plate 26. The lower end of the guide rod 25 is welded with a butt block 251, the upper end of the butt block 251 is butted with the lower end of the pressing plate 26, and the lower end of the guide rod 25 can be inserted into the lower die 24. Utilize the pressure strip 26 to compress tightly the material area, make the material area be difficult for producing because of the atress and remove at the in-process of processing, make the process of processing out the chain link in material area more stable.

As shown in fig. 4, after the second punch 223 is used to form the chain link, the chain link may be deformed and connected to the second punch 223, and at this time, the chain link may not be separated from the second punch 223, which may affect the subsequent processing of the material tape. Therefore, the lower end of the second punch 223 is provided with a separating mechanism 3 for separating the chain link from the second punch, and the separating mechanism 3 comprises two separating blocks 31 connected with the second punch 223 in a sliding way and a separating spring 32 for pushing the separating blocks 31 to move downwards. The lower end surface of the second punch 223 is provided with two separating grooves 2231, the separating block 31 is respectively arranged in the separating grooves 2231 to slide up and down, the separating spring 32 is arranged in the separating groove 2231, the upper end thereof is bonded with the upper end of the separating groove 2231, and the lower end thereof is bonded with the upper end of the separating block 31. After the chain link is formed, downward thrust is applied to the chain link by the separating block 31, so that the chain link is separated from the second punch 223, the situation that the chain link is clamped with the second punch 223 does not occur, and the processing process of the chain link is not easily influenced.

As shown in fig. 1 and 3, the work table 11 is further connected with a blanking mechanism 4 for blanking the links, and the blanking mechanism 4 includes two blanking rods 41 for pushing the links to move, a turntable 44 rotatably connected to the upper end of the work table 11, and a motor 45 for driving the turntable 44 to rotate by a connecting rod 43 rotatably connected to the turntable 44. The motor 45 is fixed to the lower end face of the table 11 by bolts, and the output shaft thereof passes through the table 11 and is coaxially fixed to the turntable 44 by bolts. The two blanking rods 41 are vertically arranged, end faces of the two blanking rods, close to the rotary table 44, are connected with the connecting block 42 through bolts, the upper end of the workbench 11 is provided with a guide groove 111 perpendicular to the moving direction of the material belt, the connecting block 42 is arranged in the guide groove 111 to slide, and the lengths of the two blanking rods 41 are equal. The rotation axis of the connecting rod 43 is not coincident with the rotation axis of the turntable 44, and one end of the connecting rod 43 far away from the turntable 44 is hinged with the end face of the connecting block 42 far away from the blanking rod 41. The upper end of the lower die 24 is provided with a first blanking groove 247 and a second blanking groove 248 which are respectively communicated with a second punch 223, the second blanking groove 248 is positioned between the first blanking groove 247 and the turntable 44, and the bottom surface of the second blanking groove 248 is lower than that of the first blanking groove 247. A first sliding groove 2471 communicated with the first blanking groove 247 penetrates through the side wall of the lower die holder 23 far away from the rotary table 44, the bottom surface of the first sliding groove 2471 is overlapped with the bottom surface of the first blanking groove 247, and a blanking rod 41 is inserted into the first sliding groove 2471 to slide. A second sliding groove 2481 communicated with the second blanking groove 248 penetrates through the side wall of the lower die holder 23 far away from the rotary table 44, the bottom surface of the second sliding groove 2481 is superposed with the bottom surface of the second blanking groove 248, and the other blanking rod 41 is inserted into the second sliding groove 2481 to slide. After the second punch 223 forms the chain link, the chain link falls into the first blanking groove 247 and the second blanking groove 248 respectively, and then the two blanking rods 41 push the chain link to move in the first sliding groove and the second sliding groove, so that the subsequent processing is performed.

The upper end of the lower die base 23 is penetrated with a first clearance hole 231 and a second clearance hole 232, the upper end of the first clearance hole 231 is communicated with the two stretching holes 241, the two first punching holes 242 and the positioning punching hole 244, and the upper end of the second clearance hole 232 is communicated with the cutting hole 246. The first chip removal holes 231 are used for collecting fine chips separated from the material belt, so that the chips cannot fall off at will, and meanwhile, the second chip removal holes 232 are used for collecting the material belt with the chain links cut off, and the material belt is used for subsequent processing.

The working principle is as follows:

the material belt is arranged between the pressing plate and the lower die 24, then the sliding block of the punch press 1 pushes the upper die base 21 to move downwards, the pressing plate is abutted against the upper end of the material belt, the positioning rod 225 is inserted into the material belt, then the upper die base 21 continues to move downwards, the material belt is flattened by the stretching punch 221, a connecting hole is punched by the first punch 222, a hole for inserting the positioning rod 225 is punched on the material belt by the positioning punch 224, the connecting punch is punched and formed into the first blanking groove 247 and the second blanking groove 248 by the second punch 223, the cutting punch 226 continues to move downwards after the chain link is formed, and the material belt with the formed chain link is cut off. Then the motor 45 drives the rotating disc 44 to rotate, drives the blanking rod 41 to reciprocate, pushes out the chain links from the first blanking groove 247 and the second blanking groove 248 by the blanking rod 41, and then the material belt continues to move for the same distance to perform the molding of the next chain link.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.