A continuous punching tool for spring leaf of stapler

Abstract

The application relates to a continuous punching tool for spring pieces of staplers, which comprises a bottom plate, a supporting plate vertically fixed on the top of the bottom plate, a supporting plate horizontally fixed on the upper side of the supporting plate, and a first punching assembly and a second punching assembly respectively arranged on the supporting plate and the supporting plate and matched with each other, two guide grooves horizontally arranged and left-right symmetrically and parallelly distributed are formed on the top outer wall of the supporting plate; the first punching assembly comprises two symmetrical folding angle units arranged in front and back; the second punching assembly comprises two second bending die groups respectively symmetrically arranged on the left and right sides of the supporting plate; a symmetrically distributed extrusion die group is arranged between the front and back sides of a first bending plate on the rear of each U-shaped block and the supporting plate; the application can carry out a continuous six-pass punching process including bending and hole opening for the spring pieces of staplers, so that the processing efficiency is greatly improved and the labor cost is reduced; meanwhile, the application avoids capital waste, effectively reduces the production cost, and ensures the processing precision.

Description

Technical Field

[0001] This invention relates to the field of stamping technology, and more particularly to a continuous stamping fixture for stapler springs. Background Technology

[0002] A stapler is a binding tool that uses metal staples to fix multiple pages of paper into a book. It is widely used in office, education, printing and other fields. The spring in the stapler is a thin, elastic metal sheet used to connect the pressure handle and the base. Because it has a flange structure that requires multiple bends and two contact pieces, its production process includes multiple stamping processes.

[0003] Existing stamping equipment can only complete a single stamping process for a single structure. Therefore, the stamping of stapler springs must be carried out individually and sequentially on multiple stamping machines. This results in the stapler springs needing to undergo repeated feeding, unloading, and transfer, which consumes a lot of time, causes intermittent processing, and ultimately leads to low processing efficiency. Moreover, each feeding, unloading, and transfer requires manual intervention, resulting in high labor costs. At the same time, since each stamping process requires a stamping machine, manufacturers need to purchase multiple stamping machines, leading to wasted funds and increased production costs. In addition, frequent equipment changes can gradually increase positioning errors, ultimately affecting processing accuracy, which urgently needs to be addressed. Summary of the Invention

[0004] In view of the current state of the prior art, the technical problem to be solved by the present invention is to provide a continuous stamping fixture for stapler springs that eliminates redundant feeding, discharging and transfer steps, thereby saving more time and realizing continuous processing, thus greatly improving processing efficiency and reducing labor costs, while avoiding capital waste to effectively reduce production costs, and also reducing positioning errors to ensure processing accuracy.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a continuous stamping fixture for stapler springs, characterized in that it includes a base plate, a support plate vertically fixed to the top of the base plate, a support plate horizontally fixed to the upper side of the support plate, and a first stamping assembly and a second stamping assembly respectively disposed on the support plate and the support plate and cooperating with each other, wherein two guide grooves are formed on the top outer wall of the support plate and are arranged horizontally and symmetrically parallel to each other.

[0006] The first stamping assembly includes two symmetrically arranged corner units. Each corner unit includes a stand fixed to the top of the support plate and located between two guide slots, a pressure block movably connected to the stand to have vertical movement function, a stamping cylinder fixed to the stand and located above the pressure block, a seat block fixed to the stand and located below the pressure block, and two first bending modules arranged on the seat blocks and symmetrically distributed left and right. The telescopic end of the stamping cylinder is vertically downward and fixed to the pressure block.

[0007] The second stamping assembly includes two second bending modules symmetrically arranged on the left and right sides of the support plate, each of the second bending modules cooperating with a first bending module on the same side; the second bending module includes a first limiting block and a first bending cylinder fixed on the outer wall of the support plate and respectively arranged vertically, a first lifting block vertically inserted in the first limiting block, and a U-shaped block fixed on the top of the first lifting block, the telescopic end of the first bending cylinder is vertically upward and fixed at the bottom of the first lifting block, and the opening of the U-shaped block is upward;

[0008] The U-shaped block has a vertically arranged first bending plate at both ends of its opening, and both first bending plates are movably embedded in the left or right outer wall of the support plate. The first bending module includes a square column that is inclined and elastically inserted into the seat block so as to always have an upward movement and reset tendency and is located between the two first bending plates. The upper ends of the square columns in the two first bending modules are respectively slidably attached to the left and right corners of the bottom of the pressure block, and the lower ends of the square columns are formed with right-angle notches.

[0009] Preferably, each of the rear sides of the first bending plate on the U-shaped block is provided with a symmetrically distributed extrusion module between the front and rear sides and the support plate. The extrusion module includes a traction block that is movably inserted into the support plate to have a left and right translation function, a screw that is horizontally inserted and screwed into the traction block, a gear that is concentrically sleeved and fixed to the inner end of the screw and movably disposed inside the support plate, and a rack that is vertically embedded in the front or rear side of the first bending plate and meshes with the gear. The inner end of the screw is rotatably connected inside the support plate.

[0010] Preferably, a first guide slope is formed on both the left and right edges of the top of the pallet, and correspondingly, a second guide slope is formed on the outer edge of the end of each of the first bending plates, which cooperates with the first guide slope; an extension block is formed on the outer top of the traction block, and a protrusion is formed on the inner side of the end of the extension block in the direction of the pallet, and a bending slope that cooperates with the first guide slope is formed at the lower corner of the end of the protrusion.

[0011] Preferably, the extrusion module further includes a punch vertically inserted into the support plate and located between the two first bending plates, and a push rod horizontally fixed to the bottom of the seat block and located inside the square column, which cooperates with the punch. The lower end of the punch is fixed inside the opening of the U-shaped block, and the upper end of the punch forms a material dropping slope with a lower outer side and a higher inner side. The upper end of the square column has a waist-shaped through hole that is longitudinally distributed between the left and right outer walls and located below the seat block, which cooperates with the outer end of the push rod. The outer end of the push rod extends movably into the waist-shaped through hole. The lower inner wall of the waist-shaped through hole and the upper inner wall of the right-angle notch have vertically distributed needle-receiving through holes that cooperate with the upper end of the punch.

[0012] Preferably, a discharge notch is provided between each of the first guide slopes and the outer wall on the same side of the tray, and the upper end of the punch in each extrusion module extends into a discharge notch on the same side. An inclined discharge slope is formed on the bottom surface of each discharge notch, and the discharge slope is set with the outer side lower and the inner side higher.

[0013] Preferably, the assembly further includes a third stamping assembly and a fourth stamping assembly, which are respectively arranged in front of and behind each other and cooperate with each other, and are both located in front of the first stamping assembly. The third stamping assembly includes two third bending modules symmetrically arranged on the left and right sides of the pallet. The third bending module includes a side frame fixed to the top of the base plate, a second bending cylinder fixed to the side frame, a second limiting block fixed to the side frame and located between the second bending cylinder and the pallet, and a pressure strip transversely inserted into the second limiting block. The telescopic end of the second bending cylinder is transversely arranged towards the pallet and fixed to the pressure strip near the end of the second bending cylinder.

[0014] Preferably, the fourth stamping assembly includes two fourth bending modules symmetrically arranged on the left and right sides of the support plate. The fourth bending module includes a third limiting block and a third bending cylinder fixed to the outer wall of the support plate and respectively arranged vertically, a second lifting block vertically inserted in the third limiting block, and a second bending plate vertically fixed to the top of the second lifting block. The telescopic end of the third bending cylinder is vertically upward and fixed to the bottom of the second lifting block. The second bending plate is movably embedded in the left or right outer wall of the support plate. Two positioning grooves are respectively distributed front and back on the upper outer wall of the second bending plate. The third bending module also includes two forming plates vertically and movably connected to the left and right outer walls of the pressure strip near one end of the support plate, each having the function of vertical movement. A forming arc surface is formed at the lower corner of the two forming plates facing the support plate.

[0015] Preferably, the top of the pallet is further provided with two symmetrically distributed cover plate assemblies. The cover plate assembly includes several cover plates fixed to the outer wall of the top of the pallet and arranged sequentially from front to back. The end edge of each cover plate extends above the opening of a guide groove on the same side. The end edge of one of the cover plates located inside the pressure strip is also provided with two forming grooves distributed front to back. The positions of the two forming grooves are respectively matched with the positions of two forming plates in a third bending module on the same side.

[0016] Preferably, it further includes a feeding mechanism located behind the pallet. The feeding mechanism includes two feeding units symmetrically arranged on the left and right sides of the pallet. Each feeding unit includes a lifting module and a pushing module that cooperate with each other and are respectively arranged front and rear. The lifting module includes a fourth limiting block fixed to the top of the base plate, a lifting column vertically inserted into the fourth limiting block, a lifting cylinder fixed to the bottom of the base plate, and a carrying block fixed to the upper end of the lifting column. The telescopic end of the lifting cylinder passes vertically upward through the base plate and is fixed to the lower end of the lifting column. The front outer wall of the carrying block slides against the rear outer wall of the pallet. The top of the carrying block has a feeding groove that cooperates with the guide groove.

[0017] Preferably, the pushing module includes a bracket fixed to the top of the base plate, a pushing block movably connected to the bracket to have a forward and backward translation function, a pushing cylinder fixed to the bracket and located behind the pushing block, and a feeding track groove horizontally fixed to the bracket and located below the pushing block and lower than the guide groove. The telescopic end of the pushing cylinder is horizontally forward and fixed to the pushing block, and the front bottom of the pushing block has a pushing strip horizontally located behind the feeding groove.

[0018] Compared with the prior art, the advantages of the present invention are as follows:

[0019] This invention enables a continuous six-step stamping process for stapler springs, including bending and punching, thereby eliminating redundant feeding, unloading, and transfer steps. Only one feeding and unloading step is required. Moreover, except for feeding, the unloading of stapler springs and the discharge of waste materials can be completed automatically without manual intervention, thus saving a lot of time and enabling continuous processing. This significantly improves processing efficiency and reduces labor costs. At the same time, the above processing can be carried out with only one machine, thus avoiding capital waste and effectively reducing production costs. In addition, eliminating the frequent switching of stapler springs reduces positioning errors, thereby ensuring processing accuracy. Attached Figure Description

[0020] The above and other features, advantages, and aspects of the embodiments of this application will become more apparent when taken in conjunction with the accompanying drawings and the following detailed description; throughout the drawings, the same or similar reference numerals denote the same or similar elements; it should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale; in the drawings:

[0021] Figure 1 This is an exploded top view of the left front side of the present invention;

[0022] Figure 2 This is a top view of the left rear side of the present invention;

[0023] Figure 3 This is a bottom view of the left rear side of the extrusion module of the present invention;

[0024] Figure 4 For the present invention in Figure 2 A magnified view of the structure at point A in the diagram;

[0025] Figure 5 For the present invention in Figure 2 A magnified view of the structure at point B in the diagram. Detailed Implementation

[0026] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly. The term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0027] To keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of known functions and known components are omitted.

[0028] like Figures 1-5As shown, a continuous stamping fixture for a stapler spring includes a base plate 1, a support plate 2 vertically fixed to the top of the base plate 1, a support plate 3 horizontally fixed to the upper side of the support plate 2, and a first stamping assembly 5 and a second stamping assembly 6 respectively disposed on the support plate 3 and the support plate 2 and cooperating with each other. Two guide grooves 31 are formed on the top outer wall of the support plate 3, which are horizontally arranged and symmetrically distributed in parallel.

[0029] The first stamping assembly 5 includes two symmetrically arranged corner units. Each corner unit includes a stand 51 fixed to the top of the support plate 3 and located between two guide slots 31, a pressure block 53 movably connected to the stand 51 to have vertical movement function, a stamping cylinder 52 fixed to the stand 51 and located above the pressure block 53, a seat block 54 fixed to the stand 51 and located below the pressure block 53, and two first bending modules arranged on the seat block 54 and symmetrically distributed left and right. The telescopic end of the stamping cylinder 52 is vertically downward and fixed to the pressure block 53.

[0030] The second stamping assembly 6 includes two second bending modules symmetrically arranged on the left and right sides of the support plate 2, and each second bending module cooperates with a first bending module on the same side. The second bending module includes a first limiting block 61 and a first bending cylinder 62 fixed on the outer wall of the support plate 2 and respectively arranged vertically, a first lifting block 63 vertically inserted in the first limiting block 61, and a U-shaped block 64 fixed on the top of the first lifting block 63. The telescopic end of the first bending cylinder 62 is arranged vertically upward and fixed at the bottom of the first lifting block 63, and the opening of the U-shaped block 64 is arranged upward.

[0031] The opening of the U-shaped block 64 has a vertically arranged first bending plate 641 at both ends. The two first bending plates 641 are movably embedded in the left or right outer wall of the support plate 3. The first bending module includes a square column 55 that is inclined and elastically inserted into the seat block 54 so as to always have an upward movement and reset tendency and is located between the two first bending plates 641. The upper ends of the square columns 55 in the two first bending modules slide and fit against the bottom left and right corners of the pressure block 53, respectively. The lower end of the square column 55 forms a right-angle notch 551.

[0032] Each U-shaped block 64 has a first bending plate 641 at the rear, and a pressing module is provided on both the front and rear sides of the first bending plate 641 and the support plate 3. The pressing module includes a traction block 65 that is movably inserted into the support plate 3 to have the function of left and right translation, a screw 66 that is horizontally inserted and screwed into the traction block 65, a gear 67 that is concentrically sleeved and fixed to the inner end of the screw 66 and movably disposed inside the support plate 3, and a rack 68 that is vertically embedded in the front or rear side of the first bending plate 641 and meshes with the gear 67. The inner end of the screw 66 is rotatably connected inside the support plate 3.

[0033] A first guide slope 32 is formed on the top left and right sides of the pallet 3. Correspondingly, a second guide slope 642 that cooperates with the first guide slope 32 is formed on the outer edge of the end of each first bending plate 641. An extension block 651 is formed on the top outer side of the traction block 65. A protrusion 652 is formed on the inner side of the end of the extension block 651 in the direction of the pallet 3. A bending slope 653 that cooperates with the first guide slope 32 is formed at the lower corner of the end of the protrusion 652.

[0034] The extrusion module also includes a punch 57 that is vertically inserted in the support plate 3 and located between the two first bending plates 641, and a push rod 56 that is horizontally fixed to the bottom of the seat block 54 and located inside the square column 55 and cooperates with the punch 57. The lower end of the punch 57 is fixed inside the opening of the U-shaped block 64, and the upper end of the punch 57 forms a material dropping slope 571 with a lower outer surface and a higher inner surface.

[0035] Between the upper left and right outer walls of the square column 55, there are longitudinally distributed waist-shaped through holes 552 located below the seat block 54 and cooperating with the outer end of the push rod 56. The outer end of the push rod 56 extends into the waist-shaped through hole 552. Between the lower inner wall of the waist-shaped through hole 552 and the upper inner wall of the right-angle notch 551, there are vertically distributed needle-accepting through holes 553 that cooperate with the upper end of the punch 57.

[0036] Each first guide slope 32 is provided with a discharge notch 33 between the outer wall of the support plate 3 on the same side. The upper end of the punch 57 in each extrusion module extends into a discharge notch 33 on the same side. Each discharge notch 33 has an inclined discharge slope 34 on its bottom surface, with the discharge slope 34 being lower on the outside and higher on the inside.

[0037] A continuous stamping fixture for stapler springs further includes a third stamping assembly 7 and a fourth stamping assembly 8, which are respectively arranged in front of and behind each other and cooperate with each other, and are both located in front of the first stamping assembly 5.

[0038] The third stamping assembly 7 includes two third bending modules symmetrically arranged on the left and right sides of the pallet 3. The third bending module includes a side frame 71 fixed to the top of the base plate 1, a second bending cylinder 74 fixed to the side frame 71, a second limiting block 72 fixed to the side frame 71 and located between the second bending cylinder 74 and the pallet 3, and a pressure strip 73 transversely inserted into the second limiting block 72. The telescopic end of the second bending cylinder 74 is transversely arranged towards the pallet 3 and fixed to the pressure strip 73 near the end of the second bending cylinder 74.

[0039] The fourth stamping assembly 8 includes two fourth bending modules symmetrically arranged on the left and right sides of the support plate 3. The fourth bending module includes a third limiting block 82 and a third bending cylinder 81 fixed on the outer wall of the support plate 2 and respectively arranged vertically, a second lifting block 83 vertically inserted in the third limiting block 82, and a second bending plate 84 vertically fixed on the top of the second lifting block 83. The telescopic end of the third bending cylinder 81 is vertically upward and fixed at the bottom of the second lifting block 83. The second bending plate 84 is movably embedded in the left or right outer wall of the support plate 3. Two positioning grooves 841 are respectively distributed front and back on the upper outer wall of the second bending plate 84.

[0040] The third bending module also includes two vertical forming plates 76 that are movably connected to the outer walls of the left and right sides of the pressure strip 73 near the end of the support plate 3, and both have the function of vertical movement up and down. A forming arc surface 761 is formed at the lower corner of the two forming plates 76 facing the support plate 3.

[0041] The top of the pallet 3 is also provided with two symmetrically distributed cover plate assemblies. The cover plate assembly includes several cover plates 4 fixed on the outer wall of the top of the pallet 3 and arranged sequentially from front to back. The end edge of each cover plate 4 extends above the opening of a guide groove 31 on the same side.

[0042] Two forming grooves 41 are also provided at the end edge of a cover plate 4 located inside the pressure strip 73, which are distributed front and back respectively. The positions of the two forming grooves 41 are respectively matched with the positions of two forming plates 76 in a third bending module on the same side.

[0043] A continuous stamping fixture for a stapler spring also includes a feeding mechanism 9 located behind a pallet 3. The feeding mechanism 9 includes two feeding units symmetrically located on the left and right sides of the pallet 3. Each feeding unit includes a lifting module and a pushing module that cooperate with each other and are respectively arranged in front and behind. The lifting module includes a fourth limiting block 91 fixed to the top of the base plate 1, a lifting column 94 vertically inserted in the fourth limiting block 91, a lifting cylinder 93 fixed to the bottom of the base plate 1, and a loading block 92 fixed to the upper end of the lifting column 94. The telescopic end of the lifting cylinder 93 passes vertically upward through the base plate 1 and is fixed to the lower end of the lifting column 94. The front outer wall of the loading block 92 slides against the rear outer wall of the pallet 3. The top of the loading block 92 is provided with a feeding groove 921 that cooperates with the guide groove 31.

[0044] The pusher module includes a bracket 99 fixed to the top of the base plate 1, a pusher block 97 movably connected to the bracket 99 to have a forward and backward translation function, a pusher cylinder 96 fixed to the bracket 99 and located behind the pusher block 97, and a feed track groove 98 horizontally fixed to the bracket 99 and located below the pusher block 97 and lower than the guide groove 31. The telescopic end of the pusher cylinder 96 is horizontally forward and fixed to the pusher block 97. The front bottom of the pusher block 97 has a pusher strip 971 horizontally located behind the feed groove 921.

[0045] An anti-overflow plate 95 is also fixed to the top of the material block 92, which is horizontally positioned above the feed chute 921.

[0046] A continuous stamping fixture for stapler springs also includes two symmetrically arranged discharge units on the left and right sides of the first stamping assembly 5. Each discharge unit includes a grooved waste discharge plate 10 that is inclinedly fixed to the top of the base plate 1. The grooved waste discharge plate 10 is set with its outer side lower than its inner side. The lower edge of the higher end opening of the grooved waste discharge plate 10 is attached to the outer wall of the support plate 3 and located below the discharge notch 33. The discharge unit also includes a waste receiving box 11 located on the top of the base plate 1 and below the lower end opening of the grooved waste discharge plate 10.

[0047] A continuous stamping fixture for stapler springs further includes a grooved discharge plate 12 that is inclinedly fixed to the top wall of the base plate 1 and located in front of the support plate 3. The grooved discharge plate 12 is arranged with a lower front and a higher rear. The lower edge of the rear opening of the grooved discharge plate 12 is attached to the front outer wall of the support plate 3 and located below the two guide grooves 31.

[0048] On the left and right outer walls of the seat block 54, there are symmetrically arranged structural inclined surfaces 541. Fixed connecting columns 59 are also fixed on the structural inclined surfaces 541 and are perpendicular to the structural inclined surfaces 541. Correspondingly, on the outer wall of the lower end of the square column 55 facing the structural inclined surface 541, there is a movable connecting column 58 that is parallel to the fixed connecting column 59 and located above the waist-shaped through hole 552. A reset spring 510 is also provided between the movable connecting column 58 and the fixed connecting column 59. The two ends of the reset spring 510 are fixed on the movable connecting column 58 and the fixed connecting column 59 respectively so that the square column 55 always has the tendency to tilt upward.

[0049] At the bottom left and right corners of the pressure block 53, there are symmetrically arranged guide arc surfaces 531. Correspondingly, the upper ends of the square columns 55 in the two first bending modules are also connected to a rotatable pulley 511. The two pulleys 511 roll and fit against the two guide arc surfaces 531 respectively.

[0050] Two recessed grooves 36 are provided on the outer walls of the left and right sides of the tray 3, respectively distributed front and back. The two first bending plates 641 on each U-shaped block 64 are respectively movably embedded in the two recessed grooves 36 on the same side. A notch 35 is provided on the inner walls of the front and rear sides of the rear recessed groove 36.

[0051] In each extrusion module, the traction block 65 is movably inserted into a corresponding notch 35. The gear 67 is movably disposed in the notch 35. The inner end of the screw 66 is rotatably connected to the inner wall of the notch 35. The side of the gear 67 facing the first bending plate 641 extends out of the notch 35 and meshes with the rack 68.

[0052] The molding plate 76 has vertically distributed guide slots 763, and horizontally arranged guide bolts 77 are also inserted and connected in the guide slots 763. The threaded end of the guide bolt 77 is inserted and screwed into the pressure strip 73 so that the head of the guide bolt 77 slides and fits against the outer wall of the molding plate 76.

[0053] The inner wall of the molding plate 76 has a side block 762 located above the pressure strip 73. A vertically arranged knob screw 75 is also screwed into the side block 762. The threaded end of the knob screw 75 is rotatably connected to the top of the pressure strip 73.

[0054] Working principle:

[0055] Multiple stapler springs are sequentially fed laterally from back to front into the feeding track groove 98 of the pushing module in each feeding unit of the feeding mechanism 9. First, the telescopic end of the lifting cylinder 93 in the lifting module is driven to retract inward, so that the lifting column 94 can move the carrying block 92 downward until the rear opening of the feeding groove 921 on the carrying block 92 is aligned with the opening of the feeding track groove 98, thereby allowing the foremost stapler spring to enter the feeding groove 921. Then, the telescopic end of the lifting cylinder 93 is driven to extend outward to move the springs downward in the same manner. The moving material block 92 moves upward until the feed groove 921 is aligned with the guide groove 31. Then, the telescopic end of the pusher cylinder 96 is driven to extend outward to drive the pusher block 97 forward, thereby inserting the end of the pusher bar 971 into the feed groove 921, thus pushing the stapler spring located in the feed groove 921 forward into the guide groove 31. This process is repeated to achieve continuous and uninterrupted feeding of the stapler spring. The middle flange on the stapler spring extends laterally to the outside of the support plate 3 through the gap between the end of the cover plate 4 and the opening of the guide groove 31.

[0056] When the stapler spring moves to the second bending module, the telescopic end of the first bending cylinder 62 extends outward to drive the U-shaped block 64 to move upward with the help of the first lifting block 63, thereby driving a first bending plate 641 to extend above the tray 3. Since the middle flange on the stapler spring is located above the first bending plate 641 at this time, the first bending plate 641 will push the middle flange to fold upward to complete the first bend.

[0057] When the first bending plate 641 moves upward, it drives the rack 68 in the extrusion module to move synchronously. Then, through the gear 67 meshing with it, it drives the screw 66 to rotate. Based on the principle of spiral connection, it drives the traction block 65 to move in the direction of the support plate 3, so that the bending slope 653 gradually approaches the first guide slope 32. Since the two contact ends on the stapler spring are located inside the traction blocks 65 in the two extrusion modules, when the bending slope 653 contacts the contact ends, it will press the contact ends onto the first guide slope 32, thus realizing the folding of the contact ends. After completion, the telescopic end of the first bending cylinder 62 is driven to retract inward to drive the U-shaped block 64 to move downward in the same way, and at the same time, the bending slope 653 gradually moves away from the contact ends in the same way.

[0058] Subsequently, the stapler spring continues to move forward until the middle flange moves to below a corner unit at the rear of the first stamping assembly 5. The telescopic end of the stamping cylinder 52 in the corner unit extends outward to drive the pressure block 53 to move downward, thereby forcing the square pillars 55 in both first bending modules to tilt and move downward. This causes the right-angle notch 551 on the square pillar 55 to tilt and press down in the direction of the middle flange, and then uses the right-angle notch 551 to press the middle flange, which has already been folded upward, outward to flatten it to complete the second bend.

[0059] In the above process, the next stapler spring completes its first bend with the help of the second bending module. As the U-shaped block 64 moves upward, it also drives the punch 57 in the extrusion module to move upward. Since the needle-receiving through hole 553 is located directly above the punch 57, the upper end of the punch 57 will extend above the support plate 3, pass through the end of the middle flange, and enter the needle-receiving through hole 553, thus realizing the punching operation. The punched waste may fall into the discharge notch 33 and then slide down the discharge slope 34 to the slotted waste discharge plate 1 in a discharge unit on the same side. In step 0, the waste material slides down the grooved waste discharge plate 10 and is automatically collected in the waste collection box 11. The flushed waste material may also remain in the waist-shaped through hole 552. However, after the second bend is completed, the telescopic end of the stamping cylinder 52 will retract inward to drive the square column 55 to tilt upward in the same way, thereby forcing the outer end of the push rod 56 to move horizontally in the direction of the needle through hole 553 until the outer end of the push rod 56 extends out of the waist-shaped through hole 552 along the lower inner wall of the waist-shaped through hole 552, thereby pushing the waste material remaining in the waist-shaped through hole 552 out of the waist-shaped through hole 552 and finally falling into the waste collection box 11.

[0060] Next, when the stapler spring moves to the middle flange and is above the first bending plate 641 in front of the second bending module, the telescopic end of the first bending cylinder 62 is driven to extend outward again to drive the U-shaped block 64 upward in the same way, thereby folding the end of the flattened middle flange upward again, thus completing the third bending.

[0061] Next, the stapler spring continues to move forward until the two contacts on the stapler spring are directly above the two positioning grooves 841 on the second bending plate 84 in a fourth bending module on the same side. Then, the telescopic end of the third bending cylinder 81 is driven to extend outward to move the second bending plate 84 upward with the help of the second lifting block 83. This causes the two contacts to first enter the two positioning grooves 841 respectively. Then, the second bending plate 84, which moves upward, is bent upward by the two positioning grooves 841, thus bending the roots of the two contacts into an upward vertical state. This completes the fourth bend. After completion, the telescopic end of the third bending cylinder 81 is driven to retract inward to move the second bending plate 84 downward in the same way, thus causing the two positioning grooves 841 to leave the two contacts respectively.

[0062] Next, the stapler spring continues to move forward until the two contacts on the stapler spring are aligned with the two forming grooves 41 on a cover plate 4 on the same side. Then, the telescopic end of the second bending cylinder 74 is driven to extend outward so that the two forming plates 76 move towards the support plate 3 with the help of the pressure strip 73. This causes the forming arc surfaces 761 on the two forming plates 76 to press the roots of the two contacts into the two forming grooves 41, thereby bending the roots of the two contacts into an inclined state. This completes the fifth bend.

[0063] After completing all bending operations, the stapler spring will leave the guide groove 31 and fall into the trough-shaped discharge plate 12, and finally slide outward to achieve automatic collection.

[0064] This invention enables a continuous six-step stamping process for stapler springs, including bending and punching, thereby eliminating redundant feeding, unloading, and transfer steps. Only one feeding and unloading step is required. Moreover, except for feeding, the unloading of stapler springs and the discharge of waste materials can be completed automatically without manual intervention, thus saving a lot of time and enabling continuous processing. This significantly improves processing efficiency and reduces labor costs. At the same time, the above processing can be carried out with only one machine, thus avoiding capital waste and effectively reducing production costs. In addition, eliminating the frequent switching of stapler springs reduces positioning errors, thereby ensuring processing accuracy.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A continuous stamping fixture for stapler springs, characterized in that, It includes a base plate, a support plate vertically fixed to the top of the base plate, a support plate horizontally fixed to the upper side of the support plate, and a first stamping assembly and a second stamping assembly respectively disposed on the support plate and the support plate and cooperating with each other. Two guide grooves are formed on the top outer wall of the support plate, which are arranged horizontally and symmetrically distributed in parallel. The first stamping assembly includes two symmetrically arranged corner units. Each corner unit includes a stand fixed to the top of the support plate and located between two guide slots, a pressure block movably connected to the stand to have vertical movement function, a stamping cylinder fixed to the stand and located above the pressure block, a seat block fixed to the stand and located below the pressure block, and two first bending modules arranged on the seat blocks and symmetrically distributed left and right. The telescopic end of the stamping cylinder is vertically downward and fixed to the pressure block. The second stamping assembly includes two second bending modules symmetrically arranged on the left and right sides of the support plate, each of the second bending modules cooperating with a first bending module on the same side; the second bending module includes a first limiting block and a first bending cylinder fixed on the outer wall of the support plate and respectively arranged vertically, a first lifting block vertically inserted in the first limiting block, and a U-shaped block fixed on the top of the first lifting block, the telescopic end of the first bending cylinder is vertically upward and fixed at the bottom of the first lifting block, and the opening of the U-shaped block is upward; The U-shaped block has a vertically arranged first bending plate at both ends of its opening. Both first bending plates are movably embedded in the left or right outer wall of the support plate. The first bending module includes a square column that is inclined and elastically inserted into the seat block to always have an upward moving and resetting tendency and is located between the two first bending plates. The upper ends of the square columns in the two first bending modules are respectively slidably attached to the left and right corners of the bottom of the pressure block, and the lower ends of the square columns are formed with right-angle notches. Each U-shaped block has a symmetrically distributed extrusion module between its front and rear sides and the support plate of the first bending plate at the rear. The extrusion module includes a traction block that is movably inserted into the support plate to have left and right translation function, a screw that is horizontally inserted and screwed into the traction block, a gear that is concentrically sleeved and fixed to the inner end of the screw and movably disposed inside the support plate, and a rack that is vertically embedded in the front or rear side of the first bending plate and meshes with the gear. The inner end of the screw is rotatably connected inside the support plate.

2. The continuous stamping fixture for a stapler spring according to claim 1, characterized in that, The top left and right edges of the pallet each have a first guide slope. Correspondingly, the outer edge of the end of each first bending plate has a second guide slope that cooperates with the first guide slope. The top outer side of the traction block has an extension block that extends upward. The inner side of the end of the extension block has a protrusion that faces the pallet. The lower corner of the end of the protrusion has a bending slope that cooperates with the first guide slope.

3. The continuous stamping fixture for a stapler spring according to claim 2, characterized in that, The extrusion module also includes a punch vertically inserted into the support plate and located between the two first bending plates, and a push rod horizontally fixed to the bottom of the seat block and located inside the square column, which cooperates with the punch. The lower end of the punch is fixed inside the opening of the U-shaped block, and the upper end of the punch forms a material dropping slope with a lower outer side and a higher inner side. The upper end of the square column has a waist-shaped through hole that is longitudinally distributed between the left and right outer walls and located below the seat block, which cooperates with the outer end of the push rod. The outer end of the push rod extends movably into the waist-shaped through hole. The lower inner wall of the waist-shaped through hole and the upper inner wall of the right-angle notch have vertically distributed needle-receiving through holes that cooperate with the upper end of the punch.

4. The continuous stamping fixture for a stapler spring according to claim 3, characterized in that, A discharge notch is provided between each of the first guide slopes and the outer wall of the support plate on the same side. The upper end of the punch in each extrusion module extends into a discharge notch on the same side. An inclined discharge slope is formed on the bottom surface of each discharge notch. The discharge slope is set with the outer side lower and the inner side higher.

5. The continuous stamping fixture for a stapler spring according to claim 1, characterized in that, It also includes a third stamping assembly and a fourth stamping assembly, which are respectively arranged in front of and behind each other and cooperate with each other, and are both located in front of the first stamping assembly. The third stamping assembly includes two third bending modules symmetrically arranged on the left and right sides of the pallet. The third bending module includes a side frame fixed to the top of the base plate, a second bending cylinder fixed to the side frame, a second limiting block fixed to the side frame and located between the second bending cylinder and the pallet, and a pressure strip transversely inserted into the second limiting block. The telescopic end of the second bending cylinder is transversely arranged towards the pallet and fixed to the pressure strip near the end of the second bending cylinder.

6. The continuous stamping fixture for a stapler spring according to claim 5, characterized in that, The fourth stamping assembly includes two fourth bending modules symmetrically arranged on the left and right sides of the support plate. Each fourth bending module includes a third limiting block and a third bending cylinder fixed to the outer wall of the support plate and respectively arranged vertically, a second lifting block vertically inserted in the third limiting block, and a second bending plate vertically fixed to the top of the second lifting block. The telescopic end of the third bending cylinder is vertically upward and fixed to the bottom of the second lifting block. The second bending plate is movably embedded in the left or right outer wall of the support plate. Two positioning grooves are respectively distributed front and back on the upper outer wall of the second bending plate. The third bending module also includes two forming plates vertically and movably connected to the left and right outer walls of the pressure strip near one end of the support plate, each having the function of vertical movement. A forming arc surface is formed at the lower corner of the two forming plates facing the support plate.

7. The continuous stamping fixture for a stapler spring according to claim 6, characterized in that, The top of the pallet is also provided with two symmetrically distributed cover plate assemblies. The cover plate assembly includes several cover plates fixed to the outer wall of the top of the pallet and arranged sequentially from front to back. The end edge of each cover plate extends above the opening of a guide groove on the same side. The end edge of one of the cover plates located inside the pressure strip is also provided with two forming grooves distributed front to back. The positions of the two forming grooves are respectively matched with the positions of two forming plates in a third bending module on the same side.

8. The continuous stamping fixture for a stapler spring according to claim 1, characterized in that, It also includes a feeding mechanism located behind the pallet. The feeding mechanism includes two feeding units symmetrically arranged on the left and right sides of the pallet. Each feeding unit includes a lifting module and a pushing module that cooperate with each other and are arranged front and rear respectively. The lifting module includes a fourth limiting block fixed to the top of the base plate, a lifting column vertically inserted into the fourth limiting block, a lifting cylinder fixed to the bottom of the base plate, and a loading block fixed to the upper end of the lifting column. The telescopic end of the lifting cylinder passes vertically upward through the base plate and is fixed to the lower end of the lifting column. The front outer wall of the loading block slides against the rear outer wall of the pallet. The top of the loading block has a feeding groove that cooperates with the guide groove.

9. A continuous stamping fixture for stapler springs according to claim 8, characterized in that, The pushing module includes a bracket fixed to the top of the base plate, a pushing block movably connected to the bracket to have a forward and backward translation function, a pushing cylinder fixed to the bracket and located behind the pushing block, and a feeding track groove horizontally fixed to the bracket and located below the pushing block and lower than the guide groove. The telescopic end of the pushing cylinder is horizontally forward and fixed to the pushing block, and a pushing strip is horizontally formed at the bottom front side of the pushing block behind the feeding groove.

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