Automatic clamping and positioning spring sheet stamping and bending die

Abstract

The application relates to the technical field of stamping dies, and discloses a spring piece stamping and bending die with automatic clamping and positioning, which comprises a lower die plate, a forming box, a bearing frame and an upper die assembly, the forming box is detachably connected to the lower die plate through a dismounting assembly; the forming box is internally provided with a bending female die, a positioning seat, a liftable positioning pin, a driving assembly and a cleaning assembly; the driving assembly drives the two side rack plates to move reversely through a motor driving gear, so that the clamping blocks synchronously clamp the spring pieces on the positioning seat, the center lines of the core components are coplanar, the stress is balanced and warping is prevented; the cleaning assembly combines blowing and suction to suck the forming area scraps to a waste box for centralized filtration, so that the product surface is prevented from being pressed to form marks; the dismounting assembly adopts a combination of a rhombic pin and a cylindrical pin to prevent over-positioning during assembly. The spring pieces are automatically clamped synchronously and the forming area is forced to discharge chips, the stamping size precision and the product yield are effectively improved, and the die can be quickly dismounted and maintained.

Description

Technical Field

[0001] This invention relates to the field of stamping die technology, specifically to an automatic clamping and positioning spring stamping and bending die. Background Technology

[0002] Springs are widely used in various electronic and electrical devices, and their forming and processing typically rely on stamping and bending dies. During the stamping and bending process, the positioning and clamping stability of the spring directly affects the dimensional accuracy of the finished product. Existing spring stamping dies mostly rely on simple limiting pins or manual pre-tightening for initial fixation during processing. When the upper die presses down, the spring is easily subjected to stamping stress, leading to localized warping or positional shifts, resulting in asymmetrical bending angles or out-of-tolerance dimensions, thus reducing the product yield.

[0003] Meanwhile, during prolonged continuous stamping, the forming area inevitably generates a large amount of fine metal debris. Traditional molds lack an effective internal automatic chip removal structure, causing debris to easily accumulate in the dead corners between the bending die and the positioning seat. With increasing stamping cycles, these residual hard debris are directly imprinted on the surface of the spring sheets being processed later, causing surface defects such as indentations and scratches, severely impacting product yield. To clean this debris, operators can only frequently stop the machine to manually clean it using air guns or brushes, which not only increases the labor intensity of workers but also significantly reduces the overall production efficiency of the equipment.

[0004] Furthermore, because easily damaged parts such as bending dies inside stamping dies require regular inspection and replacement, existing forming mold boxes are typically rigidly fixed to the lower template using multiple long bolts. This structure is very time-consuming and labor-intensive during daily disassembly and assembly, and after repeated disassembly and assembly, the multi-point rigid positioning is prone to over-positioning due to machining errors and assembly tolerances, leading to assembly jamming or decreased alignment accuracy of the upper and lower dies, increasing the later maintenance costs of the mold. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an automatic clamping and positioning spring stamping and bending die, which solves the problems of unstable clamping during processing, which can lead to product dimensional deviations, internal waste accumulation which can cause surface indentations, and the cumbersome assembly and disassembly of existing spring stamping dies, which can easily cause assembly interference.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic clamping and positioning spring sheet stamping and bending die, comprising a lower template, a forming box, a support frame, and an upper die assembly.

[0007] A support frame is fixedly connected to the upper rear side of the lower template, and an upper template assembly is fixedly connected to the upper inside of the support frame;

[0008] The forming box is detachably connected to the lower template via a disassembly assembly. The forming box contains a bending die, a positioning seat, a liftable positioning pin, a drive assembly, and a cleaning assembly. The upper die assembly corresponds vertically to the bending die, and the liftable positioning pin is slidably connected inside the positioning seat.

[0009] The drive assembly includes a gear, two rack plates, two push rods, two clamping rods, and two clamping blocks. The two rack plates are respectively meshed and connected to both sides of the gear. The output ends of the two push rods are respectively driven and connected to the two clamping rods. The two clamping blocks are respectively connected to the corresponding clamping rods and are arranged opposite to each other on both sides of the positioning seat.

[0010] The cleaning components are disposed in the outer and inner areas of the positioning seat and the bending die.

[0011] Preferably, the drive assembly further includes a drive motor, a drive shaft, and two support frames. The two support frames are respectively fixedly connected to the upper sides of the two rack plates, and the push rods are respectively fixedly connected to the upper sides of the two support frames. The drive shaft is fixedly connected to the output end of the drive motor, and the gear is fixedly connected to the outside of the drive shaft.

[0012] Preferably, the driving assembly further includes two limiting plates, which are slidably connected inside the limiting groove, and two support frames are slidably connected to the inside sides of the molding box.

[0013] Preferably, the two rack plates are parallel to each other and distributed on both radial sides of the gear, the two clamping rods are respectively connected to the two push rods, the two clamping blocks are respectively fixedly connected to one end of the two clamping rods facing the positioning seat, each clamping block is provided with a clamping surface, and the clamping surfaces of the two clamping blocks are arranged opposite to each other.

[0014] Preferably, the cleaning component includes a first chip suction hole, an air blowing hole, a second chip suction hole, a connecting cavity, a negative pressure manifold cavity, and a negative pressure channel. The first and second chip suction holes are evenly distributed inside the forming box. The air blowing hole is located inside the bending die, and the air outlet of the air blowing hole faces the forming area between the positioning seat and the bending die. The first and second chip suction holes are respectively connected to the connecting cavity, and the connecting cavity is connected to the negative pressure manifold cavity. One end of the negative pressure channel is connected to the negative pressure manifold cavity, and the other end of the negative pressure channel is connected to the negative pressure quick connector.

[0015] Preferably, the cleaning assembly further includes a connecting pipe, a waste bin, a disassembly frame, a filter screen, a connecting pipe, a filter, an air extraction pipe, and an air pump. The connecting pipe connects the negative pressure quick connector and the waste bin. The disassembly frame is fixedly connected inside the waste bin. The filter screen is slidably connected inside the disassembly frame. The connecting pipe connects the waste bin and the filter. The air extraction pipe connects the filter and the air pump.

[0016] Preferably, the assembly / disassembly assembly includes a first cylindrical positioning pin, a first positioning hole, a rhombus-shaped positioning pin, a rhombus-shaped positioning groove, a second positioning hole, and a second cylindrical positioning pin. The first cylindrical positioning pin is fixedly connected to the lower template and inserted into the first positioning hole, which is located on the lower side of the molding box. The rhombus-shaped positioning pin is fixedly connected to the lower side of the molding box and inserted into the rhombus-shaped positioning groove, which is located in the middle of the upper side of the lower template. The second cylindrical positioning pin is fixedly connected to the bottom of the molding box and inserted into the second positioning hole, which is located on the upper side of the lower template.

[0017] Preferably, the assembly further includes multiple locking screws, multiple mounting brackets, and multiple locking blocks. The multiple locking screws are evenly distributed on the upper side of the molding box and fixedly connected to the lower template. The multiple mounting brackets are fixedly connected to the four outer corners of the molding box. The multiple locking screws pass through the corresponding mounting brackets, and the multiple locking blocks are threaded to the corresponding locking screws. Each locking block abuts against the upper surface of the corresponding mounting bracket.

[0018] Preferably, the first cylindrical locating pin is in a precision clearance fit with the first locating hole, the second cylindrical locating pin is in a clearance fit with the second locating hole, and the rhomboid locating pin is provided with two opposing locating surfaces and two opposing clearance surfaces, the two locating surfaces respectively conforming to the corresponding inner walls of the rhomboid locating groove.

[0019] Preferably, the bending die and the positioning seat are detachably connected to the forming box, and the positioning center line of the liftable positioning pin, the bending center line of the bending die, and the symmetrical center line of the two clamping blocks are located in the same vertical plane.

[0020] This invention provides an automatic clamping and positioning spring sheet stamping and bending die. It has the following beneficial effects:

[0021] 1. This invention, by setting up a drive assembly consisting of a drive motor, gears, rack and pinion plates, and clamping blocks, can automatically and synchronously clamp the spring sheet to be processed on the positioning seat from both sides before stamping. It works in conjunction with the liftable positioning pin for precise initial positioning. Since the center lines of the liftable positioning pin, the bending die, and the clamping block are on the same vertical plane, it ensures that the die is subjected to balanced force during stamping, avoids warping or positional displacement of the spring sheet at the moment of bending, and ensures the dimensional accuracy of the product.

[0022] 2. The present invention provides air blowing holes, a first chip suction hole, and a second chip suction hole in the forming area. Together with an air pump and a waste bin, they form a cleaning component that combines blowing and suction. During the stamping process, air is blown into the forming area to lift up metal waste from dead corners, and negative pressure is used to suck the waste into the waste bin for centralized filtration. This avoids metal debris remaining on the mold surface, which can cause indentations on the spring sheet, thus reducing the defect rate and reducing the frequency of manual shutdown for mold cleaning.

[0023] 3. This invention achieves rapid connection between the molding box and the lower template by setting up a disassembly and assembly assembly including cylindrical positioning pins, diamond positioning pins and locking screws. The avoidance surface of the diamond positioning pins effectively compensates for machining tolerances and prevents assembly jamming or over-positioning during multi-pin assembly. Operators only need to screw the locking block to press the mounting bracket to complete the stable locking of the core components of the mold, which improves the efficiency of daily mold maintenance and internal parts replacement. Attached Figure Description

[0024] Figure 1 This is a perspective view of the present invention;

[0025] Figure 2 This is a rear view of the present invention;

[0026] Figure 3 This is a cross-sectional view of the molding box of the present invention;

[0027] Figure 4 This is a schematic diagram of the drive component structure of the present invention;

[0028] Figure 5 This is a side sectional view of the molding box of the present invention;

[0029] Figure 6 This is a schematic diagram of the cleaning component structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the disassembly and assembly components of the present invention;

[0031] Figure 8 This is a structural diagram of the bottom of the molding box of the present invention.

[0032] The components include: 1. Lower template; 2. Forming box; 201. Bending die; 3. Support frame; 4. Upper die assembly; 5. Positioning seat; 6. Liftable positioning pin; 7. Drive assembly; 701. Drive motor; 702. Drive shaft; 703. Gear; 704. Rack plate; 705. Limiting plate; 706. Limiting groove; 707. Support frame; 708. Push rod; 709. Clamping rod; 710. Clamping block; 8. Cleaning assembly; 801. First chip suction hole; 802. Air blowing hole; 803. Second chip suction hole; 804. Connecting cavity; 805. 806. Negative pressure manifold; 807. Negative pressure quick connector; 808. Connecting pipe; 809. Waste bin; 810. Assembly / disassembly frame; 811. Filter screen; 812. Connecting pipe; 813. Filter; 814. Air extraction pipe; 815. Air extraction pump; 9. Assembly / disassembly assembly; 901. Locking screw; 902. Mounting bracket; 903. Locking block; 904. First cylindrical positioning pin; 905. First positioning hole; 906. Diamond positioning pin; 907. Diamond positioning groove; 908. Second positioning hole; 909. Second cylindrical positioning pin. Detailed Implementation

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see the appendix Figure 1 -Appendix Figure 4 This invention provides an automatic clamping and positioning spring sheet stamping and bending die, comprising a lower template 1, a forming box 2, a support frame 3, and an upper die assembly 4.

[0035] A support frame 3 is fixedly connected to the upper rear side of the lower template 1, and an upper mold assembly 4 is fixedly connected to the upper side inside the support frame 3;

[0036] The molding box 2 is detachably connected to the lower template 1 via the disassembly and assembly component 9. The molding box 2 is equipped with a bending die 201, a positioning seat 5, a liftable positioning pin 6, a drive component 7, and a cleaning component 8. The upper die component 4 corresponds to the bending die 201 vertically, and the liftable positioning pin 6 is slidably connected inside the positioning seat 5.

[0037] The drive assembly 7 includes a gear 703, two rack plates 704, two push rods 708, two clamping rods 709, and two clamping blocks 710. The two rack plates 704 are respectively meshed and connected to both sides of the gear 703. The output ends of the two push rods 708 are respectively connected to the two clamping rods 709. The two clamping blocks 710 are respectively connected to the corresponding clamping rods 709 and are arranged opposite to each other on both sides of the positioning seat 5.

[0038] The cleaning component 8 is located in the outer and inner areas of the positioning seat 5 and the bending die 201.

[0039] The lower template 1 is designed to support the entire mold, thus preventing violent shaking of the equipment during stamping and stabilizing the mold's center of gravity. The upper mold assembly 4, in conjunction with the bending die 201, performs vertical reciprocating motion to achieve the effect of stamping and bending the spring sheet to be processed. The disassembly and assembly assembly 9 is used to quickly fix and disassemble the forming box 2, thus avoiding the cumbersome and time-consuming disassembly and assembly caused by traditional multi-bolt fixing, and improving the efficiency of maintenance and replacement of internal mold components. The bending die 201 is made of alloy tool steel and is used to bear the stamping stress and shape the spring sheet forming angle. The positioning seat 5 is used to support and place the spring sheet to be processed, providing a horizontal reference support.

[0040] The liftable positioning pin 6, in conjunction with the positioning seat 5, moves up and down, achieving precise insertion and positioning of the pre-drilled hole for the spring to be processed. The gear 703, in conjunction with two rack plates 704, performs gear and rack transmission, thereby driving the two rack plates 704 to move in opposite linear directions, achieving the effect of converting single rotational power into synchronous linear power from both sides. The clamping block 710 is used to synchronously abut and clamp the spring from both sides, thus preventing the spring from warping or shifting position during stamping, ensuring the dimensional accuracy of the spring during stamping and bending. The cleaning component 8 is used to suck away and discharge the metal waste generated during the stamping and bending process, thus preventing the waste from remaining in the forming area for a long time and causing indentations on the surface of the spring, reducing the generation of defective products, ensuring the product yield rate and extending the service life of the mold.

[0041] Please see the appendix Figure 3 and attached Figure 4 The drive assembly 7 also includes a drive motor 701, a drive shaft 702, and two support frames 707. The two support frames 707 are respectively fixedly connected to the upper side of the two rack plates 704. Push rods 708 are respectively fixedly connected to the upper side of the two support frames 707. The drive shaft 702 is fixedly connected to the output end of the drive motor 701. A gear 703 is fixedly connected to the outside of the drive shaft 702.

[0042] The drive motor 701 is a servo motor, which provides precise rotational drive power. The support frame 707 is used to support and install the push rod 708, thereby preventing the push rod 708 from shaking violently during operation, reducing power loss, and ensuring stable power output. The drive shaft 702 rotates in conjunction with the gear 703, achieving the effect of smoothly transmitting the torque of the drive motor 701 to the gear 703.

[0043] Please see the appendix Figure 1 -Appendix Figure 7 The drive assembly 7 also includes two limiting plates 705, which are slidably connected inside the limiting groove 706, and two support frames 707 are slidably connected to the inside sides of the molding box 2.

[0044] The limiting plate 705, in conjunction with the limiting groove 706, performs linear guiding motion, thereby limiting the movement trajectory of the rack plate 704 and preventing it from shifting or misaligning.

[0045] Please see the appendix Figure 3 and attached Figure 4 Two rack plates 704 are parallel to each other and distributed on both radial sides of the gear 703. Two clamping rods 709 are respectively connected to two push rods 708. Two clamping blocks 710 are respectively fixedly connected to one end of the two clamping rods 709 facing the positioning seat 5. Each clamping block 710 is provided with a clamping surface, and the clamping surfaces of the two clamping blocks 710 are arranged opposite to each other.

[0046] The clamping rod 709 works in conjunction with the push rod 708 to perform linear transmission, thereby driving the clamping block 710 to move synchronously closer together. This achieves the effect of bidirectional clamping and positioning of the spring. The clamping surface is used to increase the contact area with the spring to be processed, thereby avoiding the phenomenon of local stress concentration and damage to the spring surface caused by the clamping area being too small. This reduces the generation of defective products and achieves a stable and damage-free clamping effect.

[0047] Please see the appendix Figure 2 and attached Figure 5 The cleaning component 8 includes a first chip suction hole 801, an air blowing hole 802, a second chip suction hole 803, a connecting cavity 804, a negative pressure manifold cavity 805, and a negative pressure channel 806. The first chip suction hole 801 and the second chip suction hole 803 are evenly distributed inside the forming box 2. The air blowing hole 802 is located inside the bending die 201, and the air outlet of the air blowing hole 802 faces the forming area between the positioning seat 5 and the bending die 201. The first chip suction hole 801 and the second chip suction hole 803 are respectively connected to the connecting cavity 804. The connecting cavity 804 is connected to the negative pressure manifold cavity 805. One end of the negative pressure channel 806 is connected to the negative pressure manifold cavity 805, and the other end of the negative pressure channel 806 is connected to the negative pressure quick connector 807.

[0048] The first and second chip suction holes 801 and 803 are used to suck out the waste chips from the forming area, thereby avoiding the phenomenon of long-term accumulation of waste chips causing mold jamming or indentation on the workpiece surface, reducing the frequency of manual mold cleaning and lowering production costs. The air blowing hole 802 is used to blow high-pressure gas into the forming area, thereby avoiding the phenomenon of stamping waste chips adhering to dead corners and being difficult to be sucked out, and playing a role in forced chip removal in conjunction with the chip suction holes. The connecting cavity 804 works with the negative pressure manifold cavity 805 to guide and converge the airflow, achieving the effect of collecting and transporting the airflow from multiple dispersed suctions. The negative pressure channel 806 is made of stainless steel or rigid plastic pipe, and its function is to provide a robust and sealed air pressure delivery channel.

[0049] Please see the appendix Figure 2 and attached Figure 6 The cleaning component 8 also includes a connecting pipe 808, a waste bin 809, a disassembly frame 810, a filter screen 811, a connecting pipe 812, a filter 813, an air extraction pipe 814, and an air pump 815. The connecting pipe 808 connects the negative pressure quick connector 807 and the waste bin 809. The disassembly frame 810 is fixedly connected inside the waste bin 809. The filter screen 811 is slidably connected inside the disassembly frame 810. The connecting pipe 812 connects the waste bin 809 and the filter 813. The air extraction pipe 814 connects the filter 813 and the air pump 815.

[0050] The vacuum pump 815 is a commercially available industrial vacuum pump, which provides negative pressure for suction in the pipeline. The waste bin 809 is used to collect the suctioned waste, thus preventing the waste from being directly discharged into the workshop environment and causing pollution. This reduces the trouble of subsequent manual cleaning and lowers maintenance costs. The disassembly frame 810 works with the filter screen 811 to slide and pull, achieving the effect of quickly disassembling and cleaning the metal waste intercepted inside. The filter 813 is used to perform secondary filtration of fine dust in the airflow, thus preventing dust particles from entering the vacuum pump 815 and causing equipment wear or jamming, reducing equipment failure rate and maintenance costs.

[0051] Please see the appendix Figure 7 and attached Figure 8 The assembly / disassembly component 9 includes a first cylindrical positioning pin 904, a first positioning hole 905, a rhombus positioning pin 906, a rhombus positioning groove 907, a second positioning hole 908, and a second cylindrical positioning pin 909. The first cylindrical positioning pin 904 is fixedly connected to the lower template 1 and inserted into the first positioning hole 905, which is located on the lower side of the molding box 2. The rhombus positioning pin 906 is fixedly connected to the lower side of the molding box 2 and inserted into the rhombus positioning groove 907, which is located in the middle of the upper side of the lower template 1. The second cylindrical positioning pin 909 is fixedly connected to the bottom of the molding box 2 and inserted into the second positioning hole 908, which is located on the upper side of the lower template 1.

[0052] The first cylindrical positioning pin 904, in conjunction with the first positioning hole 905, performs insertion and guiding motion, achieving the effect of initial positioning and limiting horizontal displacement between the molding box 2 and the lower template 1. The rhomboid positioning pin 906 is used to limit the rotational freedom of the molding box 2, thereby preventing the molding box 2 from circumferentially deflecting during assembly or under force, and ensuring the precise alignment of the upper and lower parts of the mold.

[0053] Please see the appendix Figure 7 and attached Figure 8 The assembly 9 also includes multiple locking screws 901, multiple mounting brackets 902, and multiple locking blocks 903. The multiple locking screws 901 are evenly distributed on the upper side of the molding box 2 and are fixedly connected to the lower template 1. The multiple mounting brackets 902 are fixedly connected to the four outer corners of the molding box 2. The multiple locking screws 901 pass through the corresponding mounting brackets 902 respectively. The multiple locking blocks 903 are threaded to the corresponding locking screws 901 respectively. Each locking block 903 abuts against the upper surface of the corresponding mounting bracket 902.

[0054] The mounting bracket 902 is designed to provide a locking force fulcrum, thereby avoiding the phenomenon of shell deformation caused by applying pressure directly to the weak part of the molding box 2, reducing the risk of damage to the mold body, and extending the service life of the mold. The locking block 903 works with the locking screw 901 to perform threaded engagement and pressing movement, thereby driving the mounting bracket 902 to press downward, achieving the effect of firmly locking the molding box 2 on the lower template 1.

[0055] Please see the appendix Figure 7 and attached Figure 8 The first cylindrical positioning pin 904 is precisely clearance fitted with the first positioning hole 905, the second cylindrical positioning pin 909 is clearance fitted with the second positioning hole 908, and the rhomboid positioning pin 906 is provided with two opposing positioning surfaces and two opposing clearance surfaces, with the two positioning surfaces respectively fitting the corresponding inner walls of the rhomboid positioning groove 907.

[0056] The clearance surface is designed to compensate for the positioning pin distance error, thereby avoiding assembly jamming or over-positioning caused by machining tolerances when multiple pins are used together. This reduces assembly interference and lowers machining accuracy requirements and production costs.

[0057] Please see the appendix Figure 3 The bending die 201 and the positioning seat 5 are detachably connected to the forming box 2. The positioning center line of the lifting positioning pin 6, the bending center line of the bending die 201, and the symmetrical center line of the two clamping blocks 710 are located in the same vertical plane.

[0058] The bending die 201 is made of high-hardness alloy mold steel. Its function is to provide a hard forming cavity for stamping and bending. The three-line coplanar structure is used to ensure the balanced force during stamping, thereby avoiding the phenomenon of asymmetrical bending angle of the spring due to uneven load, reducing the generation of scrap and lowering production costs.

[0059] Working principle: Before stamping, the forming box 2 is first installed on the lower template 1. During installation, the first cylindrical positioning pin 904 is inserted into the first positioning hole 905 for initial horizontal positioning. At the same time, the diamond positioning pin 906 is inserted into the diamond positioning groove 907. The two positioning surfaces of the diamond positioning pin are used to fit against the inner wall of the groove to restrict the rotational freedom of the forming box 2, and the clearance surface is used to compensate for processing errors and avoid over-positioning jamming. The second cylindrical positioning pin 909 is inserted into the second positioning hole 908 for auxiliary positioning. After positioning is completed, multiple locking blocks 903 are rotated so that they are screwed downward on the locking screw 901, pressing the upper surface of the corresponding mounting bracket 902, thereby quickly and firmly locking the forming box 2 on the lower template 1.

[0060] After the mold is assembled, the spring to be processed is placed on the positioning seat 5. At this time, the liftable positioning pin 6 is driven by the external drive mechanism to rise inside the positioning seat 5, accurately penetrate and cooperate with the reserved hole on the spring to be processed, and complete the initial positioning of the spring.

[0061] The drive motor 701 on the support frame 707 is started. The output end of the drive motor 701 drives the drive shaft 702 and gear 703 to rotate. When the gear 703 rotates, it drives the two meshing rack plates 704 on both sides to move in opposite directions in a straight line. During this process, the limiting plate 705 slides in the limiting groove 706 to ensure that the movement trajectory of the rack plate 704 does not deviate. The two rack plates 704 drive the two clamping rods 709 to move inward synchronously through the two push rods 708. Finally, the clamping surfaces of the two clamping blocks 710 simultaneously abut against and clamp the spring on the positioning seat 5 from the left and right sides. Since the center lines of the liftable positioning pin 6, the bending die 201 and the clamping block 710 are coplanar, it is ensured that the spring is subjected to balanced force and avoids stamping deviation.

[0062] After the spring is firmly clamped, the upper mold assembly 4, which is fixed on the upper side of the support frame 3, moves downward in a straight line. In conjunction with the bending die 201 inside the forming box 2, the spring in the clamped state is stamped and bent. The bidirectional clamping effectively prevents the spring from warping during the stamping process.

[0063] During or after stamping, the vacuum pump 815 is started and connected to an external high-pressure air source. The air blowing hole 802 blows high-pressure gas into the forming area between the positioning seat 5 and the bending die 201, blowing up the metal scraps in the dead corner. At the same time, the vacuum pump 815 generates negative pressure, and the scraps in the forming area are forcefully sucked into the connecting cavity 804 through the first scrap suction hole 801 and the second scrap suction hole 803 on the positioning seat 5. Then they converge into the negative pressure manifold 805 and are transported to the scrap bin 809 through the negative pressure channel 806, the negative pressure quick connector 807 and the connecting pipe 808.

[0064] The airflow and debris entering the waste bin 809 are intercepted by the filter screen 811 inside the disassembly frame 810, leaving the metal debris inside the waste bin 809. The pre-filtered gas enters the filter 813 through the connecting pipe 812 for secondary fine dust filtration. Finally, the clean air is discharged by the vacuum pump 815 through the exhaust pipe 814, protecting the vacuum equipment. After stamping and cleaning, the upper mold assembly 4 is reset and raised, and the drive motor 701 reverses to release the clamping block 710. The lifting and lowering positioning pin 6 then descends, allowing the bent spring sheet to be removed. When a certain amount of debris accumulates in the waste bin 809, the operator can directly pull out the disassembly frame 810 to clean the debris on the filter screen 811.

Claims

1. An automatic clamping and positioning spring sheet stamping and bending die, characterized in that, It includes a lower template (1), a forming box (2), a support frame (3), and an upper mold assembly (4), characterized in that: The upper rear side of the lower template (1) is fixedly connected to a support frame (3), and the upper side of the inner upper side of the support frame (3) is fixedly connected to an upper mold assembly (4). The molding box (2) is detachably connected to the lower template (1) via the disassembly assembly (9). The molding box (2) is provided with a bending die (201), a positioning seat (5), a liftable positioning pin (6), a drive assembly (7), and a cleaning assembly (8). The upper die assembly (4) corresponds vertically to the bending die (201). The liftable positioning pin (6) is slidably connected inside the positioning seat (5). The drive assembly (7) includes a gear (703), two rack plates (704), two push rods (708), two clamping rods (709), and two clamping blocks (710). The two rack plates (704) are respectively meshed and connected to both sides of the gear (703). The output ends of the two push rods (708) are respectively connected to the two clamping rods (709). The two clamping blocks (710) are respectively connected to the corresponding clamping rods (709) and are arranged opposite to each other on both sides of the positioning seat (5). The cleaning component (8) is disposed in the outer and inner areas of the positioning seat (5) and the bending die (201).

2. The automatic clamping and positioning spring sheet stamping and bending die according to claim 1, characterized in that, The drive assembly (7) further includes a drive motor (701), a drive shaft (702), and two support frames (707). The two support frames (707) are respectively fixedly connected to the upper side of the two rack plates (704). The push rod (708) is fixedly connected to the upper side of the two support frames (707). The drive shaft (702) is fixedly connected to the output end of the drive motor (701). The gear (703) is fixedly connected to the outside of the drive shaft (702).

3. The automatic clamping and positioning spring sheet stamping and bending die according to claim 2, characterized in that, The drive assembly (7) also includes two limiting plates (705), which are slidably connected inside the limiting groove (706), and the two support frames (707) are slidably connected to the inside sides of the molding box (2).

4. The automatic clamping and positioning spring sheet stamping and bending die according to claim 3, characterized in that, The two rack plates (704) are parallel to each other and distributed on both radial sides of the gear (703). The two clamping rods (709) are respectively connected to the two push rods (708). The two clamping blocks (710) are respectively fixedly connected to one end of the two clamping rods (709) facing the positioning seat (5). Each clamping block (710) is provided with a clamping surface. The clamping surfaces of the two clamping blocks (710) are arranged opposite to each other.

5. The automatic clamping and positioning spring sheet stamping and bending die according to claim 1, characterized in that, The cleaning component (8) includes a first chip suction hole (801), an air blowing hole (802), a second chip suction hole (803), a connecting cavity (804), a negative pressure manifold cavity (805), and a negative pressure channel (806). The first chip suction hole (801) and the second chip suction hole (803) are evenly distributed inside the forming box (2). The air blowing hole (802) is located inside the bending die (201). The air outlet of the air blowing hole (802) faces the forming area between the positioning seat (5) and the bending die (201). The first chip suction hole (801) and the second chip suction hole (803) are respectively connected to the connecting cavity (804). The connecting cavity (804) is connected to the negative pressure manifold cavity (805). One end of the negative pressure channel (806) is connected to the negative pressure manifold cavity (805), and the other end of the negative pressure channel (806) is connected to the negative pressure quick connector (807).

6. The automatic clamping and positioning spring sheet stamping and bending die according to claim 5, characterized in that, The cleaning assembly (8) further includes a connecting pipe (808), a waste bin (809), a disassembly frame (810), a filter (811), a connecting pipe (812), a filter (813), an air extraction pipe (814), and an air pump (815). The connecting pipe (808) connects the negative pressure quick connector (807) and the waste bin (809). The disassembly frame (810) is fixedly connected inside the waste bin (809). The filter (811) is slidably connected inside the disassembly frame (810). The connecting pipe (812) connects the waste bin (809) and the filter (813). The air extraction pipe (814) connects the filter (813) and the air pump (815).

7. The automatic clamping and positioning spring sheet stamping and bending die according to claim 1, characterized in that, The disassembly and assembly component (9) includes a first cylindrical positioning pin (904), a first positioning hole (905), a rhombus positioning pin (906), a rhombus positioning groove (907), a second positioning hole (908), and a second cylindrical positioning pin (909). The first cylindrical positioning pin (904) is fixedly connected to the lower template (1) and inserted into the first positioning hole (905). The first positioning hole (905) is opened on the lower side of the molding box (2). The rhombus positioning pin (906) is fixedly connected to the lower side of the molding box (2) and inserted into the rhombus positioning groove (907). The rhombus positioning groove (907) is opened in the middle of the upper side of the lower template (1). The second cylindrical positioning pin (909) is fixedly connected to the bottom of the molding box (2) and inserted into the second positioning hole (908). The second positioning hole (908) is opened on the upper side of the lower template (1).

8. The automatic clamping and positioning spring sheet stamping and bending die according to claim 7, characterized in that, The assembly / disassembly component (9) also includes multiple locking screws (901), multiple mounting brackets (902), and multiple locking blocks (903). The multiple locking screws (901) are evenly distributed on the upper side of the molding box (2) and fixedly connected to the lower template (1). The multiple mounting brackets (902) are fixedly connected to the four outer corners of the molding box (2). The multiple locking screws (901) pass through the corresponding mounting brackets (902) respectively. The multiple locking blocks (903) are threaded to the corresponding locking screws (901) respectively. Each locking block (903) abuts against the upper surface of the corresponding mounting bracket (902).

9. The automatic clamping and positioning spring sheet stamping and bending die according to claim 7, characterized in that, The first cylindrical positioning pin (904) is precisely clearance-fitted with the first positioning hole (905), the second cylindrical positioning pin (909) is clearance-fitted with the second positioning hole (908), and the rhomboid positioning pin (906) is provided with two opposing positioning surfaces and two opposing clearance surfaces, and the two positioning surfaces respectively fit against the corresponding inner wall of the rhomboid positioning groove (907).

10. The automatic clamping and positioning spring sheet stamping and bending die according to claim 1, characterized in that, The bending die (201) and the positioning seat (5) are detachably connected to the forming box (2). The positioning center line of the liftable positioning pin (6), the bending center line of the bending die (201), and the symmetrical center line of the two clamping blocks (710) are located in the same vertical plane.

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