A continuous stamping die for forming pins and strips at one time

Abstract

The present invention discloses a continuous stamping die for forming plug pins and material strips at one time, which relates to the technical field of stamping dies and solves the problem that the production of plug pins is scattered and leads to slow processing in subsequent processes. The upper template of the material strip and the upper template of the plug pin are fixedly connected to the upper die seat respectively, and the lower template of the material strip and the lower template of the plug pin are fixedly connected to the lower die seat respectively; the upper template of the material strip and the lower template of the material strip cooperate to process and form a material strip with a slot, and a moving material channel for the feeding belt to pass is provided between the upper template of the plug pin and the lower template of the plug pin, and a positioning device locates the slot position of the material strip; the pin blank strip on the needle feeding device conveying needle blank material channel is inserted and fixed in the slot of the upper material strip of the moving material channel, and the cutting and forming assembly is used to cut the pin blank strip inserted into the slot to form a section of the pin. The pin is fixed on the slot and sent out with the material strip, thereby realizing automatic molding of the material strip and the plug pin and assembling the pin on the material strip, which is beneficial to the processing of subsequent processes, improves the efficiency of subsequent processing, and effectively improves the quality of the finished product.

Description

Technical Field

[0001] The invention relates to the technical field of stamping dies, in particular to a continuous stamping die for forming a pin and a material strip at one time. Background Art

[0002] At present, connectors are widely used in the electrical industry, and pins are one of the important parts of connectors. The quality of the finished pins can determine the connectivity of the connector. Pins are manufactured through stamping dies, and the produced pins are very scattered, resulting in slow processing efficiency in subsequent processes and low efficiency in installing connectors. In addition, in the subsequent electroplating process, the scattered pins are easily deformed after electroplating, resulting in a high defect rate, a high degree of scrap, and poor quality of the finished product. Summary of the invention

[0003] Purpose of the present invention: In order to overcome the defects of the prior art, the present invention provides a continuous stamping die for forming pins and material strips in one step, so as to solve the problems of slow processing in subsequent steps and poor quality of finished products caused by the scattered production of pins.

[0004] The technical solution of the present invention comprises an upper die base, a lower die base, an upper template of a material strip, a lower template of a material strip, an upper template of a pin, a lower template of a pin, a positioning device, a belt transfer device and a needle feeding device. The upper template of the material strip and the upper template of the pin are respectively fixedly connected to the upper die base, and the lower template of the material strip and the lower template of the pin are respectively fixedly connected to the lower die base; the upper template of the material strip and the lower template of the material strip cooperate to form a material strip with a slot, a moving material channel for the material strip to pass through is arranged between the upper template of the pin and the lower template of the pin, and the material strip is installed on the belt transfer device to drive The material belt moves forward along the moving material channel, and the positioning device cooperates with the material belt to locate the card slot position of the material belt on the moving material channel; the needle feeding device is provided with a needle blank material channel for conveying the pin blank belt along the length direction of the pin, and the needle blank material channel is located on one side of the moving material channel and is perpendicular to the needle blank channel. The needle feeding device is connected with the positioning device by signal to convey the pin blank belt on the needle blank channel to be inserted and fixed in the card slot of the material belt on the moving material channel, and a cutting and forming component is provided on the needle blank channel, which is used to cut the pin blank belt inserted into the card slot to form a section of pin.

[0005] By adopting the above technical scheme, a material strip with a slot is first formed by the upper template and the lower template of the material strip, and the material strip is conveyed to the moving material channel, and then the pin blank strip on the needle blank material channel is conveyed by the needle feeding device and inserted into the slot, and finally the cutting and forming assembly cuts the pin blank strip into a section of pins, so that the pins are fixed on the slots and sent out with the material strip, thereby realizing automatic forming of the material strip and the pins and assembling the pins on the material strip. The produced pins have intervals and are neatly arranged on the material strip, which is beneficial to the processing of subsequent processes, improves the efficiency of subsequent processing, increases the qualified rate, reduces the scrap rate of the pins, and effectively improves the quality of the finished product.

[0006] The present invention is further configured as follows: a positioning hole forming die, a slot forming die, a trimming die and a bending die are arranged on the upper template and the lower template of the material strip; the positioning hole forming die is located at the primary working step position of the mold stamping process to stamp out continuous positioning holes with a preset distance; the positioning device is positioned in coordination with the positioning holes; the slot forming die is used to stamp out the slots on both sides of the material strip to form a slot shape of a card slot; the trimming die is used to cut off the edge material outside the slot; the bending die bends and erects the edges on the front and rear sides of the slot to form an upright card slot shape between adjacent edges.

[0007] With the above further arrangement, the positioning hole forming die first forms the positioning hole, the positioning device obtains the position of the material strip through the positioning hole, and the slot forming die, the trimming die and the bending die act to form the slot of the material strip in steps, thereby realizing the forming of the material strip for subsequent fixation of the pins.

[0008] The present invention is further configured as follows: the movable material channel extends between the upper template of the material strip and the lower template of the material strip, the positioning device includes a plurality of positioning rods and a buffer spring, the plurality of positioning rods are arranged along the movable material channel, the positioning rods can be axially moved and installed on the upper template of the material strip or the upper template of the pin, the two ends of the buffer spring are respectively pressed on the positioning rods and the upper template of the material strip or the upper template of the pin, and the end of the positioning rod is inserted into the positioning hole of the material strip to form a positioning fit.

[0009] By further adopting the above-mentioned setting, the positioning rod can accurately locate the position of the positioning hole, thereby knowing the position of the material strip or the slot, so as to facilitate the smooth progress of each stamping step. In addition, the positioning rod is elastically pressed down by the buffer spring to make the positioning smoother and avoid hard collision and damage to the material strip.

[0010] The present invention is further configured as follows: the cutting and forming assembly includes an upper cutter and a lower cutting plate, the upper cutter and the lower cutting plate are respectively linked to the upper pin template and the lower pin template, a passage groove for the pin blank strip to pass through is opened in the lower cutting plate, the passage groove is aligned with the preset slot position of the upper material strip of the movable material channel, and the upper cutter follows the upper pin template to perform a cutting action on the position of the passage groove near the movable material channel.

[0011] With the above-mentioned further arrangement, the pin blank strip can be fed from the pin blank material channel, and directly extended into the preset slot position corresponding to the upper material strip of the movable material channel through the through slot, and then the upper cutter performs a cutting action, thereby forming a section of pin; the through slot can position the pin blank strip that is about to enter the slot, so that the pin blank strip can be smoothly inserted into the preset position.

[0012] The present invention is further configured as follows: upper and lower chamfering forming dies and left and right chamfering forming dies are provided on the upper pin template and the lower pin template. The upper and lower chamfering forming dies and the left and right chamfering forming dies are located at the step position after the cutting and forming assembly is cut off along the moving material channel step sequence. The upper and lower chamfering forming dies are used to form the chamfered shapes of the upper and lower surfaces at both ends of the pin, and the left and right chamfering forming dies are used to form the chamfered shapes of the left and right sides at both ends of the pin.

[0013] By further adopting the above-mentioned arrangement, after the pin is cut off, it passes through the upper and lower chamfering forming dies and the left and right chamfering forming dies to form a prism-shaped chamfer. This not only realizes the forming process of the pin fixed on the material strip, but also can reasonably process the shape of the pin, and combines the subsequent processing of the pin shape. The mold integration degree is higher, the production process is simplified, it is more suitable for assembly line production, and the overall production efficiency is improved.

[0014] The present invention is further configured as follows: the upper and lower chamfering forming dies include an upper chamfering block and a lower chamfering block, the upper chamfering block and the lower chamfering block are installed in a linkage manner on the upper pin template and the lower pin template, and sharp corners are protruding on the working surfaces of the upper chamfering block and the lower chamfering block respectively.

[0015] With the above further arrangement, the upper and lower sharp edges are close to the end of the punchable pin, so that the upper and lower surfaces of the end are chamfered, which is simple to process and fast to form.

[0016] The present invention is further configured as follows: the left and right chamfering forming dies include an upper pressing block, a lower bottom block and left and right chamfering punches; the upper pressing block and the left and right chamfering punches are installed on the upper template of the plug pin in a linkage manner; the lower bottom block is installed on the lower template of the plug pin in a linkage manner; the upper pressing block and the lower bottom block are respectively provided with pressing grooves that fit the shape of the end of the plug pin; the left and right chamfering punches are provided with trapezoidal grooves that fit the shape of the left and right sides of the pre-processed chamfered shape.

[0017] With the above further arrangement, the trapezoidal groove can form the left and right side surfaces of the end chamfer shape and cut off excess waste outside the chamfer. The pressing groove is used to fix the end of the pin to prevent the pin from bending when the left and right chamfering punches are operating, so as to improve the finished product quality of the pin.

[0018] The present invention is further configured as follows: a cylindrical forming mold is arranged on the upper pin template and the lower pin template, and the cylindrical forming mold includes a semicircular pressing block and a semicircular bottom block, the semicircular pressing block and the semicircular bottom block are installed on the upper pin template and the lower pin template in a linkage manner, the semicircular pressing block and the semicircular bottom block are respectively provided with semi-cylindrical grooves, and the semi-cylindrical grooves of the semi-circular pressing block and the semi-circular bottom block can be closed and merged into a whole cylindrical hole.

[0019] With the above further arrangement, the semicircular pressing block and the semicircular bottom block are closed, and the punched pin is formed into a cylindrical shape, thereby increasing the shape processing of the pin.

[0020] The present invention is further configured as follows: the bending die includes a movable frame, a top pressure block and a ramp block, the movable frame and the top pressure block are movably arranged on the lower template of the material strip in horizontal and vertical directions respectively, the ramp block is linked to the upper template of the material strip, and the ramp block and the movable frame are staggered through an inclined plane to drive the movable frame to move horizontally, a first inclined groove is provided on the movable frame, a first inclined protrusion is provided at the bottom end of the top pressure block, the first inclined protrusion is inclined to the top pressure block, the first inclined protrusion is placed in the first inclined groove to form an inclined staggered cooperation to drive the top pressure block to rise.

[0021] By adopting the above-mentioned further arrangement, the template on the material strip drives the inclined surface block to move, and the movable frame moves horizontally through the inclined surface cooperation, and then the top pressure block is driven to rise due to the cooperation between the first inclined protrusion and the first inclined groove, so as to lift and bend the two sides of the material strip, thereby realizing a vertical slot for the pin to be inserted.

[0022] The present invention is further configured as follows: a bending fine-adjustment mold is arranged on the upper template and the lower template of the material strip, and the bending fine-adjustment mold is located at the working step position after the bending mold moves along the material channel working step sequence, and the bending fine-adjustment mold includes a vertical block, a middle clamping block and a horizontal frame with horizontally adjustable position, the middle clamping block is movably clamped in the vertical block, the middle clamping block is installed in linkage with the upper template of the material strip, the vertical block is movably inserted into the upper template of the material strip, and a fine-adjustment groove is provided between the vertical block and the middle clamping block; a second oblique groove is provided on the vertical block, and a second oblique protrusion is provided on the horizontal frame, the second oblique protrusion is arranged obliquely to the horizontal frame, and the second oblique protrusion is placed in the second oblique groove to form an oblique staggered fit; an adjusting bolt for adjusting the position of the horizontal frame is provided at one end of the horizontal frame, and the adjusting bolt is exposed outside the upper template of the material strip.

[0023] By further setting the above, the height of the vertical block can be adjusted by adjusting the lateral position of the transverse frame, thereby adjusting the height dimension of the fine-tuning groove. When the height dimension is not in place, there is no need to disassemble the mold, and the height dimension requirement can be achieved by directly fine-tuning the outside of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention;

[0025] Figure 2 A schematic diagram of a part of the structure of a specific embodiment of the present invention Figure 1 ;

[0026] Figure 3 A schematic diagram of a part of the structure of a specific embodiment of the present invention Figure 2 ;

[0027] Figure 4 It is a schematic diagram of the processing process of the pin and the material strip of the present invention;

[0028] Figure 5It is a schematic structural diagram of the cutting and forming assembly of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the upper and lower chamfering forming mold of the present invention;

[0030] Figure 7 It is a structural schematic diagram of the left and right chamfering forming molds of the present invention;

[0031] Figure 8 It is a cross-sectional view of the left and right chamfering forming mold of the present invention;

[0032] Fig. 9 It is a schematic structural diagram of the left and right chamfering punches of the present invention;

[0033] Fig.10 It is a structural schematic diagram of a cylindrical forming die of the present invention;

[0034] Fig.11 It is a structural schematic diagram of the bending die of the present invention;

[0035] Fig.12 It is a structural schematic diagram of the bending fine-tuning die of the present invention;

[0036] Among them, 1. lower die seat; 2. material strip lower template; 3. pin lower template; 4. positioning device; 5. needle feeding device; 6. material strip; 61. slot; 62. pin blank strip; 63. pin; 64. positioning hole; 65. slot hole; 66. edge; 7. cutting forming component; 21. positioning hole forming die; 22. slot hole forming die; 23. trimming material die; 24. bending die; 41. positioning rod; 42. buffer spring; 71. upper cutter; 72. lower cutting plate; 721. pass slot; 31. upper and lower chamfering forming die; 32. left and right chamfering forming die; 311. upper chamfering block; 312 , lower chamfer block; 313, sharp edge; 321, upper pressure block; 322, lower bottom block; 323, left and right chamfering punches; 324, pressing groove; 325, trapezoidal groove; 33, cylindrical forming die; 331, semicircular pressure block; 332, semicircular bottom block; 333, semi-cylindrical groove; 241, movable frame; 242, top pressure block; 243, inclined surface block; 244, first oblique groove; 245, first oblique convex block; 25, bending fine-tuning die; 251, vertical block; 252, middle clamping block; 253, horizontal frame; 254, fine-tuning groove; 255, second oblique groove; 256, second oblique convex block. DETAILED DESCRIPTION

[0037] like Figure 1-Figure 4The continuous stamping die for forming a pin and a material strip at one time includes an upper die base, a lower die base 1, a material strip upper template, a material strip lower template 2, a pin upper template, a pin lower template 3, a positioning device 4, a tape transfer device, and a needle feeding device 5. The material strip upper template and the pin upper template are respectively fixedly connected to the upper die base, and the material strip lower template 2 and the pin lower template 3 are respectively fixedly connected to the lower die base 1. The stamping equipment can drive the upper die base to perform stamping on the lower die base 1. The material strip upper template and the material strip lower template 2 cooperate to form a material strip 6 with a slot 61. A moving material channel for the material strip 6 to pass is set between the pin upper template and the pin lower template 3. The material strip 6 is driven by the tape transfer device to move forward along the moving material channel. The positioning device 4 cooperates with the material strip 6 to locate the slot 61 position of the material strip 6 on the moving material channel. The needle feeding device 5 is provided with a needle blank track for conveying the pin blank strip 62 along the length direction of the pin 63. The needle blank track is located on one side of the moving track and is perpendicular to the moving track. The needle feeding device 5 is connected with the positioning device 4 by signal so as to convey the pin blank strip 62 on the needle blank track and insert it into the card slot 61 of the upper belt 6 of the moving track and fix it. The needle blank track is provided with a cutting and forming component 7, which is used to cut the pin blank strip 62 inserted into the card slot 61 to form a section of the pin 63. The stamping equipment drives the upper die seat to move, and the upper template of the material strip and the upper template of the pin punch downward toward the lower template 2 of the material strip and the lower template 3 of the pin respectively. The action of the upper template of the material strip and the lower template 2 of the material strip can process the long sheet-like continuous material strip 6 into a material strip 6 with a card slot 61, and the material strip 6 is conveyed to the moving material channel by the belt shifting device. At the same time, in the lateral direction of the moving material channel, the needle feeding device 5 conveys the long strip-like continuous pin blank strip 62 into the needle blank material channel, and the needle blank material channel is aligned with the preset card slot 61 position of the moving material channel. The pin blank strip 62 is forced to be inserted into the card slot 61 from the width direction of the material strip 6, and then, the cutting and forming component 7 immediately cuts the pin blank strip 62 at the position of the card slot 61 to form a section of the pin 63, so that the pin 63 is fixed on the card slot 61 and sent out with the material strip 6. In the subsequent pin 63 work, the pin 63 can be fixedly connected in the card slot 61 for subsequent operations.

[0038] like Figure 1 , Figure 2 , Figure 4As shown, the upper and lower templates 2 of the material strip are provided with a positioning hole forming die 21, a slot forming die 22, a trimming die 23 and a bending die 24. The positioning hole forming die 21 is located at the first working step position of the die stamping process to stamp and form continuous positioning holes 64 with a preset distance. The positioning device 4 is positioned and matched with the positioning holes 64. For each stamping action, the positioning device 4 needs to first determine the position of the positioning hole 64 before the position of the material strip 6 and the slot 61 can be known. According to the working step sequence, the material strip 6 first punches the positioning hole 64, and then the slot forming die 22 punches the slots 65 on both sides of the material strip 6 to form the slot 65 shape of the slot 61. Then, the trimming die 23 cuts off the edge material outside the slot 65, and finally the bending die 24 bends and erects the edges 66 on the front and rear sides of the slot 65, thereby forming an erected slot 61 shape between adjacent edges 66.

[0039] like Figure 3 As shown, the moving material channel extends forward to between the material strip upper template and the material strip lower template 2, and the moving material channel runs through the entire set of molds. The positioning device 4 includes a plurality of positioning rods 41 and a buffer spring 42. The plurality of positioning rods 41 are arranged along the moving direction of the moving material channel. The positioning rod 41 is movably mounted on the material strip upper template or the pin upper template and can move along the axial direction of the positioning rod 41 with the upper mold base. The two ends of the buffer spring 42 are respectively pressed on the positioning rod 41 and the material strip upper template or the pin upper template. The end of the positioning rod 41 is inserted into the positioning hole 64 of the material strip 6 to form a positioning fit. The positioning rod 41 is in a low position. Before each stamping action starts, the positioning rod 41 is first elastically inserted into the positioning hole 64 of the material strip 6 to obtain the position of the material strip 6 for accurate stamping.

[0040] like Figure 5 As shown, the cutting and forming assembly 7 includes an upper cutter 71 and a lower cutting plate 72. The upper cutter 71 and the lower cutting plate 72 are respectively linked to the upper pin template and the lower pin template 3. A passage groove 721 for the pin blank strip 62 to pass through is opened in the lower cutting plate 72. The position of the passage groove 721 is aligned with the preset card slot 61 of the upper material strip 6 of the movable material channel. The upper cutter 71 follows the upper pin template to perform a cutting action on the notch position of the passage groove 721 close to the movable material channel. The pin blank tape 62 is a wire-wound blank tape roll, and the pin feeding device 5 provides the moving power. Under the drive of the pin feeding device 5, the pin blank tape 62 can be fed from the pin blank material channel, and the position is determined by the passage slot 721. The pin blank tape 62 extends vertically into the moving material channel from the side direction of the moving material channel. At the same time, under the positioning effect of the positioning device 4, the pin blank tape 62 can be accurately inserted into the preset card slot 61 position corresponding to the material tape 6, and then the upper cutter 71 performs a cutting action, thereby forming a section of the pin 63. In order to adapt to the number of card slots 61 of the material tape 6, multiple groups of cutting and forming components 7 can be set.

[0041] like Figure 3As shown, the upper and lower chamfering forming dies 31 and the left and right chamfering forming dies 32 are provided on the upper and lower templates 3 of the plug pins, and the upper and lower chamfering forming dies 31 and the left and right chamfering forming dies 32 are located at the step position after the cutting and forming assembly 7 along the moving material channel step sequence, that is, according to the moving material channel step sequence, the upper and lower chamfering forming dies 31 and the left and right chamfering forming dies 32 are located after the cutting step of the cutting and forming assembly 7. The upper and lower chamfering forming dies 31 are used to form the chamfered shapes of the upper and lower surfaces at both ends of the plug pin 63, and the left and right chamfering forming dies 32 are used to form the chamfered shapes of the left and right sides at both ends of the plug pin 63. After the plug pin 63 is cut, it passes through the upper and lower chamfering forming dies 31 and the left and right chamfering forming dies 32, and a prism-shaped chamfer can be formed at both ends of the plug pin 63.

[0042] like Figure 6 As shown, the upper and lower chamfering forming dies 31 include an upper chamfering block 311 and a lower chamfering block 312, which are installed on the upper pin template and the lower pin template 3 in a linkage manner, and sharp edges 313 are protruding from the working surfaces of the upper chamfering block 311 and the lower chamfering block 312, respectively. The cross-section of the sharp edges 313 is triangular, and the upper and lower sharp edges 313 are close to the ends of the stamped pins 63, so that the upper and lower surfaces of the ends thereof form concave chamfers.

[0043] like Figure 7-Figure 9 As shown, the left and right chamfering forming die 32 includes an upper pressing block 321, a lower bottom block 322 and left and right chamfering punches 323. The upper pressing block 321 and the left and right chamfering punches 323 are installed on the upper template of the plug pin in a linkage manner, and the lower bottom block 322 is installed on the lower template of the plug pin 3 in a linkage manner. The upper pressing block 321 and the lower bottom block 322 are respectively provided with a pressing groove 324 that fits the shape of the end of the plug pin 63. When the pressing groove 324 is closed, it is used to fix the position of the end of the limit plug pin 63. The left and right chamfering punches 323 are provided with a trapezoidal groove 325 that fits the left and right side surfaces of the pre-processed chamfered shape. The two oblique sides of the trapezoidal groove 325 can form the left and right side surfaces of the end chamfered shape, and the upper bottom surface of the trapezoidal groove 325 can cut off excess waste outside the chamfer.

[0044] like Fig.10 As shown, a cylindrical forming die 33 is provided on the upper pin template and the lower pin template 3. The cylindrical forming die 33 includes a semicircular pressing block 331 and a semicircular bottom block 332. The semicircular pressing block 331 and the semicircular bottom block 332 are installed on the upper pin template and the lower pin template 3 in a linkage manner. The semicircular pressing block 331 and the semicircular bottom block 332 are respectively provided with a semicircular cylindrical groove 333. The semicircular cylindrical grooves 333 of the semicircular pressing block 331 and the semicircular bottom block 332 can be closed and merged into a whole cylindrical hole. The cylindrical forming die 33 is aligned with the middle position of the pin 63, and the semicircular pressing block 331 is pressed down and closed with the semicircular bottom block 332 to stamp the middle part of the pin 63 so that the middle part of the pin 63 forms a cylindrical shape.

[0045] like Fig.11 As shown, the bending die 24 includes a movable frame 241, a top pressure block 242 and a ramp block 243. The movable frame 241 and the top pressure block 242 are movably arranged on the lower template 2 of the material strip in the horizontal and vertical directions respectively. The ramp block 243 is linked to the upper template of the material strip, and the bottom end of the ramp block 243 is staggered with the outer end of the movable frame 241 through an inclined surface to drive the movable frame 241 to move horizontally. A first inclined groove 244 is provided on the movable frame 241, and a first inclined protrusion 245 is provided at the bottom end of the top pressure block 242. The first inclined protrusion 245 is inclined to the top pressure block 242, and the inclination direction of the first inclined protrusion 245 has an angle of about 45° with the main body direction of the top pressure block 242. The first inclined protrusion 245 is placed in the first inclined groove 244 to form an inclined staggered fit to drive the top pressure block 242 to rise. During operation, the template on the material strip drives the inclined surface block 243 downward, and through the inclined surface cooperation, it drives the movable frame 241 to move horizontally, and then drives the pressing block 242 upward. The pressing block 242 aligns the two sides of the material strip 6 and lifts up the upwardly bent edge 66, thereby forming a vertical slot 61.

[0046] like Fig.12 As shown, a bending fine-tuning mold 25 is provided on the upper template and the lower template 2 of the material strip, and the bending fine-tuning mold 25 is located at the step position after the bending mold 24 along the moving material channel step sequence, that is, the material strip 6 first undergoes the bending step and then enters the bending fine-tuning mold 25 for operation. The bending fine-tuning die 25 includes a vertical block 251, a middle clamping block 252 and a horizontal frame 253 whose position can be adjusted horizontally. The middle clamping block 252 is movably clamped in the vertical block 251. The middle clamping block 252 is installed in conjunction with the upper template of the material strip. The vertical block 251 is movably inserted into the upper template of the material strip. A fine-tuning groove 254 is provided between the vertical block 251 and the middle clamping block 252; a second inclined groove 255 is provided on the vertical block 251, and a second inclined protrusion 256 is provided on the horizontal frame 253. The second inclined protrusion 256 is arranged obliquely to the horizontal frame 253, and the second inclined protrusion 256 is placed in the second oblique groove 255 to form an oblique staggered fit. An adjusting bolt is installed at one end of the transverse frame 253, and the adjusting bolt is exposed on the outside of the template on the material strip. The transverse frame 253 adjusts its position by rotating the adjusting bolt on the outside of the mold, thereby adjusting the height of the vertical block 251, and then fine-tuning the height dimension of the fine-tuning groove 254. The fine-tuning groove 254 can ensure that the bent edge 66 better meets the requirements. In this way, there is no need to disassemble the mold for adjustment, and the operation is simpler and more convenient.

Claims

1. A continuous stamping die for forming pins and strips at one time, characterized in that: It includes an upper die base, a lower die base, an upper die plate for material strip, a lower die plate for material strip, an upper die plate for insertion pins, a lower die plate for insertion pins, a positioning device, a tape moving device and a needle feeding device. The upper die plate for material strip and the upper die plate for insertion pins are respectively fixedly connected to the upper die base, and the lower die plate for material strip and the lower die plate for insertion pins are respectively fixedly connected to the lower die base; The upper material strip template and the lower material strip template cooperate to form a material strip with a slot, a moving material channel for the material strip to pass through is arranged between the upper pin template and the lower pin template, the material strip is installed on the belt moving device to drive the material strip to move forward along the moving material channel, and the positioning device cooperates with the material strip to locate the slot position of the material strip on the moving material channel; The needle feeding device is provided with a needle blank channel for conveying the pin blank strip along the length direction of the pin, the needle blank channel is located on one side of the moving channel and is perpendicular to the moving channel, the needle feeding device is connected with the positioning device by signal to convey the pin blank strip on the needle blank channel to be inserted and fixed in the card slot of the upper material belt of the moving channel, the needle blank channel is provided with a cutting and forming component, the cutting and forming component is used to cut the pin blank strip inserted into the card slot to form a section of the pin.

2. The continuous stamping die for forming pins and strips at one time according to claim 1, characterized in that: The upper template and the lower template of the material strip are provided with a positioning hole forming die, a slot hole forming die, a trimming die and a bending die. The positioning hole forming die is located at the primary working step position of the mold stamping process to stamp out continuous positioning holes with a preset distance. The positioning device is positioned and cooperated with the positioning holes. The slot hole forming die is used to stamp out the slot holes on both sides of the material strip to form a slot shape of a card slot. The trimming die is used to cut off the edge material outside the slot hole. The bending die bends and erects the edges on the front and rear sides of the slot hole to form an upright card slot shape between adjacent edges.

3. The continuous stamping die for forming pins and strips at one time according to claim 2, characterized in that: The movable material channel extends between the upper template of the material strip and the lower template of the material strip. The positioning device includes multiple positioning rods and buffer springs. The multiple positioning rods are arranged along the movable material channel. The positioning rods can be axially moved and installed on the upper template of the material strip or the upper template of the pin. The two ends of the buffer spring are respectively pressed on the positioning rods and the upper template of the material strip or the upper template of the pin. The end of the positioning rod is inserted into the positioning hole of the material strip to form a positioning fit.

4. The continuous stamping die for forming pins and strips at one time according to claim 1 or 2, characterized in that: The cutting and forming assembly includes an upper cutting knife and a lower cutting plate, which are respectively linked to the upper pin template and the lower pin template. A passage slot for the pin blank strip to pass through is provided in the lower cutting plate, and the passage slot is aligned with the preset slot position of the upper material strip of the movable material channel. The upper cutting knife follows the upper pin template to perform a cutting action on the passage slot position close to the movable material channel.

5. The continuous stamping die for forming pins and strips at one time according to claim 1 or 2, characterized in that: The upper and lower pin templates are provided with upper and lower chamfering forming dies and left and right chamfering forming dies, which are located at the step positions after the cutting and forming components are moved along the material path step sequence. The upper and lower chamfering forming dies are used to form the chamfered shapes of the upper and lower surfaces at both ends of the pin, and the left and right chamfering forming dies are used to form the chamfered shapes of the left and right sides at both ends of the pin.

6. The continuous stamping die for forming pins and strips at one time according to claim 5, characterized in that: The upper and lower chamfering forming dies include an upper chamfering block and a lower chamfering block, which are installed on the upper pin template and the lower pin template in a linkage manner, and sharp corners are protruding on the working surfaces of the upper chamfering block and the lower chamfering block respectively.

7. The continuous stamping die for forming pins and strips at one time according to claim 5, characterized in that: The left and right chamfering forming dies include an upper pressure block, a lower bottom block and left and right chamfering punches. The upper pressure block and the left and right chamfering punches are installed on the upper template of the pin in a linkage manner, and the lower bottom block is installed on the lower template of the pin in a linkage manner. The upper pressure block and the lower bottom block are respectively provided with pressure grooves that fit the shape of the end of the pin, and the left and right chamfering punches are provided with trapezoidal grooves that fit the left and right side surfaces of the pre-processed chamfered shape.

8. The continuous stamping die for forming pins and strips at one time according to claim 1 or 2, characterized in that: The upper pin template and the lower pin template are provided with a cylindrical forming mold, and the cylindrical forming mold includes a semicircular pressing block and a semicircular bottom block. The semicircular pressing block and the semicircular bottom block are installed on the upper pin template and the lower pin template in a linkage manner. The semicircular pressing block and the semicircular bottom block are respectively provided with semi-cylindrical grooves, and the semi-cylindrical grooves of the semi-circular pressing block and the semi-circular bottom block can be closed and merged into a whole cylindrical hole.

9. The continuous stamping die for forming pins and strips at one time according to claim 2, characterized in that: The bending die includes a movable frame, a top pressure block and a ramp block, the movable frame and the top pressure block are movably arranged on the lower template of the material strip in the horizontal and vertical directions respectively, the ramp block is linked to the upper template of the material strip, and the ramp block and the movable frame are staggered through an inclined surface to drive the movable frame to move horizontally, the movable frame is provided with a first inclined groove, the bottom end of the top pressure block is provided with a first inclined protrusion, the first inclined protrusion is inclined to the top pressure block, the first inclined protrusion is placed in the first inclined groove to form an inclined staggered cooperation to drive the top pressure block to rise.

10. The continuous stamping die for forming pins and strips at one time according to claim 3, characterized in that: The upper template and the lower template of the material strip are provided with a bending fine-adjustment mold, and the bending fine-adjustment mold is located at the working step position after the bending mold moves along the material channel working step sequence, and the bending fine-adjustment mold includes a vertical block, a middle clamping block and a horizontal frame with horizontally adjustable position, the middle clamping block is movably clamped in the vertical block, the middle clamping block is installed in linkage with the upper template of the material strip, the vertical block is movably inserted in the upper template of the material strip, and a fine-adjustment groove is provided between the vertical block and the middle clamping block; the vertical block is provided with a second inclined groove, and the horizontal frame has a second inclined protrusion, the second inclined protrusion is inclined to the horizontal frame, and the second inclined protrusion is placed in the second inclined groove to form an inclined staggered fit; an adjusting bolt for adjusting the position of the horizontal frame is provided at one end of the horizontal frame, and the adjusting bolt is exposed on the outside of the upper template of the material strip.

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