A multi-station progressive die for the production of moving spring assemblies with visual intelligent detection

Abstract

This application belongs to the field of progressive die technology and provides a multi-station progressive die for the production of moving spring combinations with visual intelligent detection. It includes an upper die assembly, a lower die assembly, and a guide assembly. Between the upper and lower die assemblies are sequentially arranged: a first material pulling assembly, a continuous stamping and bending assembly, an armature riveting assembly, a moving contact riveting assembly, a detection assembly, a blanking assembly, and a second material pulling assembly. The advantages of this application are: it realizes an intelligent stamping production process that simultaneously completes processes such as automatic strip feeding, strip stamping, moving spring bending and adjustment, armature feeding and riveting, moving contact feeding and riveting, visual intelligent detection, and intelligent screening of defective products within a single die. It has a high degree of intelligence, and the detection assembly, through automated detection cameras and image processing technology, can quickly detect the riveting status of the armature and moving contacts, greatly improving detection efficiency, reducing errors caused by human factors, and improving the accuracy and reliability of detection.

Description

Technical Field

[0001] This application belongs to the field of progressive die technology, specifically relating to a multi-station progressive die for the production of moving spring assemblies with visual intelligent detection. Background Technology

[0002] As an electronic control device, electromagnetic relays are commonly used in automatic control circuits. They are essentially "automatic switches" that use a smaller current and lower voltage to control a larger current and higher voltage. Therefore, they play roles such as automatic adjustment, safety protection, and circuit switching in circuits, and are widely used in automatic control (such as control circuits in refrigerators, automobiles, elevators, and machine tools) and communication fields.

[0003] As one of the core components of a relay, the moving spring assembly 1 (such as...) Figure 1 , Figure 2 ), generally consisting of a moving reed 11 (such as Figure 3 , Figure 4 As shown), armature 12 (as shown) Figure 5 , Figure 6 The moving spring assembly 1 consists of three parts: 11 (as shown), 12 (moving contact), and 13 (moving contact). The production and assembly process of the moving spring assembly 1 is as follows: First, the moving spring strip 2 is stamped into a structure of several connected moving spring pieces 11 (as shown). Figure 7 The process involves forming two first riveting holes 111 and one second riveting hole 112 on the moving spring 11, punching several evenly spaced guide holes 21 on the moving spring strip 2, then punching and bending the moving spring strip 2 into several moving springs 11 connected together. The angle θ on the formed moving spring 11 is 92.2±1° and the angle β is 170±08°. Then, the two riveting protrusions 121 of the armature 12 are riveted to the two first riveting holes 111 on the moving spring 11 (the side of the armature 12 away from the riveting protrusions 121 is also provided with two spaced positioning holes 122). Then, the moving contact 13 is riveted to the second riveting hole 112 on the moving spring 11. Finally, the assembled moving spring assemblies 1 are cut apart, and the finished products are manually inspected to determine whether they are qualified.

[0004] Currently, most companies in the industry assemble and produce moving spring assemblies 1 through multiple processes, including stamping moving spring strips 2, riveting moving contacts 13, bending moving springs 11, riveting armatures 12, and manual full inspection. This results in low production efficiency, high production costs, and unstable product quality. Summary of the Invention

[0005] The purpose of this application is to provide a multi-station progressive die for the production of moving springs with visual intelligent detection. This die integrates multiple production processes and realizes an intelligent stamping production process that simultaneously completes processes such as automatic strip feeding, strip punching, moving spring bending and adjustment, armature feeding and riveting, moving contact feeding and riveting, visual intelligent detection, and intelligent screening of defective products within a single die. This process has the advantages of high intelligence, high production efficiency, high product qualification rate, stable product quality, low production cost, and safe and reliable production.

[0006] The technical solution adopted by this application to solve the above-mentioned technical problems is as follows: A multi-station progressive die for the production of moving spring assemblies with visual intelligent detection is proposed, comprising: an upper die assembly, a lower die assembly, and a guide assembly. The guide assembly is connected between the upper die assembly and the lower die assembly. The upper die assembly and the lower die assembly are sequentially provided with: The first feeding assembly is used to feed the stamped moving spring strip into the progressive die; A continuous stamping and bending assembly is used to connect and press the moving spring strip entering the progressive die, thereby forming the moving spring strip into several moving springs connected together. An armature riveting assembly is used to rivet the riveting protrusion of the armature to the first riveting hole on a plurality of connected moving springs formed by the continuous stamping and bending assembly. The moving contact riveting assembly is used to rivet the moving contact to the second riveting hole on a plurality of moving springs connected together after being riveted by the armature riveting assembly. The testing component is used to test whether the armature riveting is qualified, whether the moving contact riveting is qualified, and whether the assembled moving springs connected together after production are qualified. The material feeding assembly is used to cut and feed the moving spring assembly that has passed the inspection by the detection assembly. The second feeding assembly is used to feed the moving spring strip out of the progressive die.

[0007] Based on the above technical features, during use, the moving spring strip is fed into the progressive die by the first feeding assembly. It then undergoes continuous stamping and bending by the continuous stamping and bending assembly, forming several moving springs connected together, each meeting preset angle requirements θ and β. Subsequently, the armature riveting assembly rivets the riveting protrusion of the armature to the first riveting hole on the formed moving spring after stamping and bending, completing the fixed connection between the armature and the moving spring. After the armature riveting is completed, the moving contact riveting assembly rivets the moving contact to the second riveting hole on the moving spring, achieving a fixed connection between the moving contact and the moving spring. The detection assembly monitors the entire assembly process in real time, checking the quality of the armature riveting, the moving contact riveting, and the completed assembly of connected moving springs, ensuring the quality of the armature and moving contact riveting. After these steps are completed, if the inspection is successful, the blanking assembly cuts off the qualified moving spring assembly. Finally, the second feeding assembly delivers the remaining moving spring sheet material, along with any defective moving spring assemblies, out of the progressive die.

[0008] Therefore, the multi-station progressive die of this application integrates multiple production processes, realizing an intelligent stamping production process that simultaneously completes processes such as automatic strip feeding, strip punching, bending and adjusting of moving springs, armature feeding and riveting, moving contact feeding and riveting, visual intelligent detection, and intelligent screening of defective products within a single die. It has the advantages of high level of intelligence, high production efficiency, high product qualification rate, stable product quality, low production cost, and safe and reliable production.

[0009] Preferably, the first material pulling assembly includes a first slider and a connecting rod; the first slider is slidably connected to the upper end of the lower die assembly, and a first spring pull rod is connected to one end of the outer side of the first slider. The first slider is provided with a material pulling guide pin, which is used to insert into the guide hole of the moving spring strip. The upper end of the material pulling guide pin is provided with a first guide slope that is inclined upward toward the inner side of the progressive die; the upper end of the connecting rod is connected to the lower end of the upper die assembly, and a second guide slope is provided at the lower end of the connecting rod toward the inner side of the progressive die. The first slider is provided with a connecting groove, and a third guide slope is provided at the opening of the connecting groove toward the outer side of the progressive die. When the upper mold assembly moves closer to the lower mold assembly, the plug rod is inserted into the plug groove, the first guide slope abuts against the second guide slope, the plug rod pushes the first slider to move closer to the inside of the progressive die, and the upper end of the pull guide pin is inserted into the guide hole of the moving spring strip, thereby pulling the moving spring strip to move closer to the inside of the progressive die; When the upper mold assembly moves away from the lower mold assembly, the insertion rod moves upward and out of the insertion slot, and the first spring rod drives the material guide pin to move towards the first spring rod. The material guide pin then exits the guide hole of the moving spring strip through the first guide slope.

[0010] Through the aforementioned technical features, the first slider is held in its initial position by the action of the first spring rod. The material guide pin is located below the moving spring strip and is inserted into the guide hole, ready for material pulling. When the upper die assembly moves closer to the lower die assembly (i.e., when the stamping process begins), the lower end of the insert rod is inserted into the insert groove on the first slider. Because the lower end of the insert rod has a second guide slope and the groove opening has a third guide slope, the insert rod can smoothly enter the insert groove. At the same time, the second guide slope at the lower end of the insert rod abuts against the third guide slope at the groove opening, pushing the first slider and the material guide pin towards the inside of the progressive die (i.e., the direction of movement of the moving spring strip). As the first slider moves, the upper end of the material guide pin is inserted into the guide hole of the moving spring strip, thereby pulling the moving spring strip towards the inside of the progressive die, preparing for subsequent stamping, bending, riveting, and other processes. When the stamping process is completed and the upper die assembly moves away from the lower die assembly, the insertion rod is pulled out of the insertion slot, the first spring rod returns to its original deformation, and drives the first slider and the material guide pin to move to the initial position. During the movement, due to the design of the first guide slope, the material guide pin can smoothly disengage from the guide hole of the moving spring strip, preparing for the next material pull.

[0011] The second material pulling assembly in this application has the same structure as the first material pulling assembly.

[0012] The first and second material pulling components in this application achieve automatic feeding and delivery of the moving spring strip through the up-and-down movement of the upper die assembly, improving the automation level of the entire production line. Furthermore, the first material pulling component has a relatively simple structure; through the cooperation of the inclined plane and the action of the spring, it achieves automatic insertion and disengagement of the material pulling guide pin, ensuring reliable operation and convenient maintenance. Simultaneously, it not only avoids the incompatibility of roller feeders caused by modifications and installations, but also reduces the risk of material swaying in the feeding direction due to unilateral clamping feeding by the roller feeder. This ensures accurate material feeding while reducing manufacturing costs.

[0013] Preferably, the lower die assembly is connected to a thrust guide pin at one end away from the inner side of the progressive die. The thrust guide pin is used to insert into the guide hole of the moving spring strip. The thrust guide pin is located outside the pull guide pin. The upper end of the thrust guide pin is provided with a fourth guide slope. The fourth guide slope is inclined upward towards the inner side of the progressive die. When the insertion rod pushes the first slider to move closer to the inside of the progressive die, the upper end of the thrust guide pin disengages from the guide hole of the moving spring strip through the fourth guide ramp. When the plug rod moves upward and out of the plug groove, the upper end of the thrust guide pin is inserted into the guide hole of the moving spring strip.

[0014] Based on the aforementioned technical features, the primary function of the thrust guide pin is to position the moving spring strip as it is pulled into the progressive die for processing, ensuring that the moving spring strip does not shift or retract during processing. Before processing begins, the upper end of the thrust guide pin is inserted into the guide hole of the moving spring strip, located outside the pull guide pin. At this time, the thrust guide pin contacts the moving spring strip through its fourth guide ramp (inclined upwards towards the inside of the progressive die), serving both positioning and thrust-stopping functions. When the insertion rod pushes the first slider to move towards the inside of the progressive die, the pull guide pin is inserted into the guide hole of the moving spring strip and pulls the moving spring strip towards the inside of the progressive die. Simultaneously, due to the movement of the moving spring strip, the upper end of the thrust guide pin slides along the edge of the guide hole of the moving spring strip and gradually disengages from the guide hole of the moving spring strip through its fourth guide ramp, without affecting the pulling process. When the insertion rod moves upward and out of the insertion slot, the first slider and the pull guide pin move back to their initial positions under the action of the first spring pull rod. At this time, the pull guide pin disengages from the guide hole of the moving spring strip. Since the thrust guide pin is located outside the pull guide pin, after the pull guide pin is completely disengaged from the guide hole, the upper end of the thrust guide pin will insert into the guide hole of the next processing position of the moving spring strip, playing a thrust-stopping role. This prevents the moving spring strip from moving backward due to inertia or external force after the pull guide pin is pulled out of the guide hole, which would affect the processing quality, and prepares for the next pull and thrust-stopping process. By inserting into the guide hole of the moving spring strip, the thrust guide pin can ensure the stability of the moving spring strip's position during processing and improve processing accuracy.

[0015] Preferably, the continuous stamping and bending assembly includes: A side-push adjustment mechanism includes a first adjustment component, a first push rod, a side-push adjustment block, and a second slider. The first adjustment component is connected to the upper mold assembly, and the first push rod is connected to the lower end of the first adjustment component. The first push rod can move up and down relative to the upper mold assembly. The lower mold assembly is provided with a slide groove, and the second slider is slidably connected in the slide groove. The side-push adjustment block is connected to one side of the upper end of the second slider. The side-push adjustment block is used to abut against one side of the moving spring. When the upper mold assembly drives the first push rod to insert into the slide groove, the first push rod abuts against the side of the second slider away from the side-push adjustment block. The first adjustment component drives the first push rod to move up and down, thereby pushing the second slider to slide left and right, thereby adjusting the magnitude of the force of the side-push adjustment block abutting against the moving spring. The downward adjustment mechanism includes a second adjustment component, a second push rod, and a first elastic element. The second adjustment component is connected to the upper mold assembly, and the second push rod is connected to the lower end of the second adjustment component. The second push rod can move up and down relative to the upper mold assembly. The lower end of the second push rod is used to press against the movable spring. The first elastic element connects the second push rod and the upper mold assembly. When the upper mold assembly drives the second push rod to move closer to the lower mold assembly, the lower end of the second push rod presses against the movable spring. The second adjustment component drives the second push rod to move up and down, thereby adjusting the magnitude of the force by which the second push rod presses against the movable spring.

[0016] Based on the aforementioned technical features, the moving spring is made of C5210H material, which has high bending strength, good elasticity, and good wear resistance. However, this results in poor angular stability during bending, making it prone to exceeding tolerances. Therefore, in continuous stamping and bending of the moving spring, to meet the preset angle θ requirement on the moving spring, this application incorporates a side-push adjustment mechanism in the continuous stamping and bending assembly to compensate for variations in the bending angle. When adjustment is needed, the first adjustment component controls the up-and-down position of the first push rod within the slide groove. The up-and-down movement of the first push rod pushes the second slider to slide left and right within the slide groove, thereby changing the pressure of the side-push adjustment block on the side of the moving spring, achieving the adjustment purpose, and ultimately ensuring that the angle θ remains stable within the tolerance. To meet the preset angle β requirement on the moving spring, based on the physical and chemical properties of C5210H material, a bending springback angle exceeding the tolerance limit is first compensated during bending. Then, a downward adjustment mechanism is used to achieve the desired angle tolerance. When adjustment is needed, the vertical position of the second push rod relative to the upper die assembly is controlled by adjusting the second adjustment component. The vertical movement of the second push rod changes the pressure exerted by its lower end on the top of the moving spring, achieving the adjustment purpose and ultimately ensuring that the angle remains stable within the tolerance.

[0017] Preferably, the armature riveting assembly includes an armature feeding mechanism, which includes: a first vibratory feeder with a first track connected to one side, an armature placed on the first vibratory feeder, and the first vibratory feeder being used to transport the armature along the first track to the pre-riveting position. The vertical stop assembly includes a vertical stop and a second spring rod. The second spring rod is connected to one side of the lower die assembly, and one end of the second spring rod extends into the inner side of the progressive die. The vertical stop is connected to a section of the second spring rod. The vertical stop is used to abut against one side of the armature at the feed-in pre-riveting position to position the armature in the vertical direction.

[0018] With the aforementioned technical features, when the armature is fed into the progressive die, it is first placed on a first vibratory feeder. The first vibratory feeder, through vibration, transports the armature along a first track to the pre-riveting position. When the armature is transported to the pre-riveting position, a vertical stop abuts against one side of the armature. The vertical stop is connected to one side of the lower template assembly via a second spring rod. When the armature contacts the vertical stop, the spring force ensures that the armature is accurately positioned in the vertical direction, reducing the scrap rate caused by incorrect armature positioning. After the armature is fed in, a detection component checks whether the armature is in place. If the check is qualified, the pre-riveting process begins; if not, the moving spring and armature are discarded and the material is scrapped.

[0019] Preferably, the armature riveting assembly further includes a pre-riveting mechanism, which includes a seesaw, a first pre-riveting punch, a first clamping rod, and a second clamping rod. The seesaw is rotatably connected to the lower die assembly. A pre-riveting sliding block is connected to the upper side of one end of the seesaw. The upper end of the pre-riveting sliding block is provided with spaced positioning blocks. The first pre-riveting punch, the first clamping rod, and the second clamping rod are all connected to the upper die assembly. The vertical stop is provided with an insertion hole. A first abutting inclined surface is provided in the insertion hole. A second abutting inclined surface is provided on the second clamping rod. The second abutting inclined surface cooperates with the first abutting inclined surface. When the upper die assembly moves closer to the lower die assembly, the second clamping rod passes through the insertion hole and presses against the end of the seesaw away from the pre-riveting sliding block. The second clamping rod pushes the vertical stop block away from the armature through the cooperation of the first abutting inclined surface and the second abutting inclined surface. The end of the seesaw connected to the pre-riveting sliding block moves upward, causing the positioning block of the pre-riveting sliding block to be inserted into the positioning hole of the armature. The armature pressing rod presses against the armature located at the pre-riveting position. The first pre-riveting punch pre-rivets the riveting protrusion on the armature to the two first riveting holes on the moving spring.

[0020] With the above technical features, when preparing for pre-riveting, the armature is precisely positioned vertically at the pre-riveting position by a vertical stop. The pre-riveting sliding block is connected to the lower die assembly via a seesaw, and its upper end is equipped with a positioning block for insertion into the positioning hole of the armature. When the upper die assembly moves closer to the lower die assembly, the second clamping rod passes through the insertion hole of the vertical stop and presses against the end of the seesaw away from the pre-riveting sliding block. Because the second abutting inclined surface on the second clamping rod cooperates with the first abutting inclined surface on the vertical stop, the second clamping rod will push the vertical stop to move away from the armature, thereby releasing the vertical positioning of the armature. Because one end of the seesaw is pressed by the second clamping rod, the end connected to the pre-riveting sliding block will move upward, and the positioning block of the pre-riveting sliding block will insert into the positioning hole of the armature, ensuring that the position of the armature in the horizontal direction is also fixed. At the same time, the armature pressure rod will press against the armature located at the pre-riveting position to prevent it from moving during the pre-riveting process. Simultaneously, the first pre-riveting punch begins operation, pre-riveting the riveting protrusions on the armature to the two first riveting holes on the moving spring. Therefore, through the positioning blocks of the vertical stop and the pre-riveting sliding block, the armature is precisely positioned in both the horizontal and vertical directions, greatly improving riveting accuracy. Furthermore, the pre-riveting mechanism utilizes the seesaw principle, ensuring stable and reliable clamping and positioning processes, reducing errors caused by improper operation. Thus, due to high-precision positioning and a stable pre-riveting process, the scrap rate caused by inaccurate positioning or poor riveting is reduced, improving the accuracy, stability, and production efficiency of armature riveting. After pre-riveting is completed, the pre-riveting is inspected by an inspection component. If the inspection is qualified, the first pre-riveting punch is used for another pressing and riveting process. After riveting, the process proceeds to the next step; if the inspection fails, the material is discarded.

[0021] Preferably, the upper end of the first pre-riveting punch is connected to a third adjusting component. The third adjusting component includes a third adjusting rod and a third screw. One end of the third adjusting rod is connected to the outer side of the upper die assembly via the third screw. The other end of the third adjusting rod extends into the inner side of the upper die assembly and is movably connected to the upper die assembly. The end of the third adjusting rod extending into the upper die assembly is provided with a third adjusting slope. The first pre-riveting punch is movably connected to the upper die assembly in a vertical direction. The upper end of the first pre-riveting punch is provided with a third adjusting slope. The first adjusting slope and the second adjusting slope are in contact. The third screw is used to adjust the length of the third adjusting rod inserted into the inner side of the progressive die. Thus, the stamping position and angle of the first pre-riveting punch are adjusted by the cooperation of the first adjusting slope and the second adjusting slope.

[0022] Through the aforementioned technical features, the shape and size of the riveted armature are controlled. Exceeding tolerances may result in an unreliable riveting, leading to functional loss in subsequent products. To ensure shape and size tolerances and reduce maintenance and debugging costs in actual production, this application incorporates a third adjustment component during armature riveting. When adjustment is required, the third screw can be rotated to move the third adjustment rod along its axis within the upper die assembly. This movement of the third adjustment rod causes the first third adjustment ramp to interact with the second third adjustment ramp on the first pre-riveting punch. Due to the cooperation between the two ramps, the movement of the third adjustment rod is converted into a change in the vertical position and angle adjustment of the first pre-riveting punch, achieving the adjustment purpose and ensuring that the shape and size of the riveted armature remain within tolerances.

[0023] Preferably, the moving contact riveting assembly includes: The second vibratory plate has a second track at one end and a sliding block at the end of the second track. The sliding block has a placement groove. A moving contact is placed on the second vibratory plate. The second vibratory plate is used to send the moving contact into the placement groove. The first and second inclined wedges are respectively connected to the upper mold assembly and inserted into the lower mold assembly. The sliding block is slidably connected between the first and second inclined wedges. The first and second inclined wedges are provided with parallel first inclined wedge surfaces above the sliding block, and the sliding block is provided with parallel second inclined wedge surfaces on both sides. A second pre-riveting punch is connected to the upper die assembly, and the lower end of the second pre-riveting punch extends beyond the lower end of the upper die assembly; When the upper die assembly moves toward the side closer to the lower die assembly, the first and second inclined wedges move toward the side closer to the lower die assembly, thereby pushing the sliding block to slide upward along the first inclined wedge through the second inclined wedge surface to the pre-riveting position. The second pre-riveting punch pre-rivets the moving contact located at the pre-riveting position, and rivets the moving contact to the second riveting hole on the moving spring.

[0024] Through the aforementioned technical features, during mold opening, the second vibratory feeder sends the moving contact into its second track. The moving contact moves along the track and enters the placement slot on the sliding block, thus sending the moving contact to its initial position. When the upper mold assembly moves closer to the lower mold assembly, the first and second inclined wedges also move closer to the lower mold assembly along with the upper mold assembly. The sliding block is located between the first and second inclined wedges, and the second inclined wedge surfaces on both sides of the sliding block interact with the first inclined wedge surfaces on the first and second inclined wedges. Due to the design of the inclined wedge surfaces, when the inclined wedges move towards the lower mold assembly, the sliding block rises along the first inclined wedge surfaces. When the sliding block rises to a certain position (i.e., the pre-riveting position), the moving contact is also brought to the pre-riveting position. At this time, the second pre-riveting punch extends from the upper mold assembly and performs a pre-riveting operation on the moving contact located at the pre-riveting position, riveting it to the second riveting hole on the moving spring. After the pre-riveting is completed, the detection component will detect the pre-riveting of the moving contact. If the pre-riveting is qualified, the second pre-riveting punch will press again to complete the riveting.

[0025] Preferably, the detection component includes a detection camera, which is provided with a first lens and a second lens. The detection camera is positioned above the movable spring. The first lens is used to detect the riveting state of the armature, and the second lens is used to detect the riveting state of the movable contact.

[0026] Through the aforementioned technical features, in the previous production process of moving spring assemblies, abnormal situations such as riveting damage or missing riveting often occurred due to incomplete feeding of the moving contact and armature, resulting in the scrapping of finished products after subsequent relay assembly. To avoid this situation, this application sets up a detection component to detect the positioning and missing riveting of the moving contact and armature, as well as possible defects such as poor riveting, misfeeding, poor material cutting, poor bending, and crushing. After the armature is riveted to the moving spring, the first lens will take a photo or video of the armature and its riveting part. Through image processing technology, the system can analyze the photo or video to determine whether the riveting of the armature is accurate and firm, and whether there are any defects or misalignments. After the moving contact is riveted to the moving spring, the second lens will take a photo or video of the moving contact and its riveting part. Similarly, the system uses image processing technology to analyze the photo or video to detect the riveting quality of the moving contact, including whether it is firm and whether the position is accurate. If it is determined to be a defective product, a command is sent to control the intelligent defective product screening module to perform an operation. Automated inspection cameras and image processing technology can quickly detect the riveting status of armatures and moving contacts, greatly improving inspection efficiency, reducing errors caused by human factors, and enhancing the accuracy and reliability of inspection.

[0027] Preferably, the blanking assembly includes a selective cutting punch, a first movable block, a second movable block, and a cylinder. The first movable block is slidably connected to the upper die assembly, and the cylinder is connected to one end of the first movable block. The lower end of the first movable block is provided with at least two continuous first cutting grooves, and the upper end of the second movable block is provided with several continuous second cutting grooves. The first cutting grooves cooperate with the second cutting grooves. The selective cutting punch is connected to the lower end of the second movable block, and the selective cutting punch is used to cut and blank the moving spring assembly that has passed the detection component.

[0028] Through the aforementioned technical features, after passing the inspection by the detection component, when the upper die assembly moves towards the side closer to the lower die assembly, it drives the first movable block to move towards the side closer to the lower die assembly. The first movable block pushes the second movable block and the selective cutting punch towards the side closer to the lower die assembly for punching and blanking. Simultaneously, the cylinder pulls the first movable block to slide along the upper die assembly. The first and second movable blocks are connected by a first and a second cutting groove, so as the first movable block moves, it drives the second movable block to move up and down, thereby driving the selective cutting punch to move up and down, completing multiple punching and blanking operations, fully ensuring that the qualified moving spring assembly is cut off and blanked.

[0029] In summary, this application has the following beneficial effects: (1) This application integrates multiple production processes and realizes an intelligent stamping production process that can simultaneously complete processes such as automatic feeding of strip, strip punching, bending and adjustment of moving spring, feeding and riveting of armature, feeding and riveting of moving contact, visual intelligent detection, and intelligent screening of defective products within a single mold. It has the advantages of high level of intelligence, high production efficiency, high product qualification rate, stable product quality, low production cost, and safe and reliable production. (2) The first and second material pulling components of this application realize the automatic pulling and feeding of the moving spring strip through the up and down movement of the upper mold component, which improves the automation level of the entire production line. The structure of the first material pulling component is relatively simple. Through the cooperation of the inclined surface and the action of the spring, the automatic insertion and disengagement of the material pulling guide pin is realized. The operation is reliable and the maintenance is convenient. (3) In the continuous stamping and bending of the moving spring, in order to meet the requirements of the preset angles θ and β on the moving spring, the side push adjustment mechanism and the downward pressure adjustment mechanism are used to compensate for the variation of the bending angle, and finally ensure that the angles θ and β are stable within the tolerance. Attached Figure Description

[0030] Figure 1 This is a top view of the moving spring assembly; Figure 2 This is a side view of the moving spring assembly; Figure 3 This is a side view of the movable reed; Figure 4 This is a top view of the movable reed; Figure 5 This is a top view of the armature; Figure 6 This is a side view of the armature; Figure 7 This is a top view of the moving spring strip; Figure 8 This is a schematic diagram of a stamping process according to one embodiment of the present invention; Figure 9 This is a front structural diagram of a progressive die according to one embodiment of the present invention; Figure 10 This is a side view of the progressive die according to one embodiment of the present invention; Figure 11 This is a schematic diagram of the structure of the first material pulling assembly according to one embodiment of the present invention. Figure 1 ; Figure 12 This is a schematic diagram of the structure of the first material pulling assembly according to one embodiment of the present invention. Figure 2 ; Figure 13 This is a schematic diagram of the continuous stamping and bending of a moving spring under a continuous stamping and bending assembly, according to one embodiment of the present invention. Figure 14 A schematic diagram of the structure of a continuous stamping and bending assembly according to one embodiment of the present invention. Figure 1 ; Figure 15 A schematic diagram of the structure of a continuous stamping and bending assembly according to one embodiment of the present invention. Figure 2 ; Figure 16 This is a schematic diagram of the side-push adjustment mechanism according to one embodiment of the present invention; Figure 17 This is a schematic diagram of the downward adjustment mechanism according to one embodiment of the present invention; Figure 18 This is a schematic diagram of the structure of an armature riveting assembly according to one embodiment of the present invention. Figure 1 ; Figure 19 This is a schematic diagram of the structure of an armature riveting assembly according to one embodiment of the present invention. Figure 2 ; Figure 20 A schematic diagram of the structure of a moving contact riveting assembly according to one embodiment of the present invention. Figure 1 ; Figure 21 A schematic diagram of the structure of a moving contact riveting assembly according to one embodiment of the present invention. Figure 2 ; Figure 22 A schematic diagram of the structure of a moving contact riveting assembly according to one embodiment of the present invention. Figure 3 ; Figure 23 A schematic diagram of the structure of a detection component according to one embodiment of the present invention. Figure 1 ; Figure 24 A schematic diagram of the structure of a detection component according to one embodiment of the present invention. Figure 2 ; Figure 25 This is a schematic diagram of the structure of a blanking assembly according to one embodiment of the present invention. Figure 2 .

[0031] In the diagram, 1. Moving spring assembly; 11. Moving spring sheet; 111. First riveting hole; 112. Second riveting hole; 12. Armature; 121. Riveting protrusion; 122. Positioning hole; 13. Moving contact; 2. Moving spring sheet strip; 21. Guide hole; 3. Progressive die; 31. Upper die assembly; 311. Upper die base; 312. Upper pad; 313. Upper clamping plate; 314. Stop plate; 315. Upper stripper plate; 32. Lower die assembly; 321. Slide groove; 322. Lower pad; 323. Lower die base; 32 4. Lower pad; 325. Lower template; 33. Guide assembly; 331. Inner guide post; 332. Outer guide post; 4. First material pulling assembly; 41. First slider; 411. Insertion groove; 412. Third guide slope; 42. Insertion rod; 421. Second guide slope; 43. First spring pull rod; 431. First guide rod; 432. First spring; 44. Material pulling guide pin; 441. First guide slope; 45. Thrust guide pin; 451. Fourth guide slope; 5. Continuous stamping bending Components; 51. Side-push adjustment mechanism; 511. First adjustment component; 5111. First adjustment rod; 5112. First screw; 5113. First adjustment ramp one; 512. First push rod; 5121. First adjustment ramp two; 5122. First adjustment ramp three; 513. Side-push adjustment block; 514. Second slider; 5141. First adjustment ramp four; 5142. Return spring; 52. Downward adjustment mechanism; 521. Second adjustment component; 522. Second push rod; 523. 53. First elastic element; 54. Punch head; 55. Clamping block; 6. Punch pad; 7. Armature riveting assembly; 8. Armature feeding mechanism; 9. First vibratory plate; 10. First track; 11. Vertical stop assembly; 12. Vertical stop; 13. Second spring rod; 14. Insertion hole; 15. First abutment slope; 16. Pre-riveting mechanism; 17. Seesaw; 18. First pre-riveting punch; 19. Third adjusting slope; 10. First clamping rod; 624. Second clamping rod; 6241. Second abutting inclined surface; 6242. Washer; 625. Pre-riveted sliding block; 6251. Positioning block; 63. Third adjusting assembly; 631. Third adjusting rod; 632. Third screw; 633. Third adjusting inclined surface one; 7. Moving contact riveting assembly; 71. Second vibratory plate; 72. Second track; 73. Sliding block; 731. Second inclined wedge; 732. Placement groove; 74. First inclined wedge; 75. 76. Two inclined wedges; 77. First inclined wedge surface; 78. Second pre-riveting punch; 79. Fourth adjustment assembly; 80. Detection assembly; 81. Detection camera; 82. First lens; 83. Second lens; 84. Fixed base; 85. Adjustable bracket; 86. Positioning base; 97. Unloading assembly; 98. Selective cutting punch; 99. First movable block; 90. First cutting groove; 91. Second movable block; 92. Second cutting groove; 93. Cylinder; 94. Second pulling assembly. Detailed Implementation

[0032] The following are specific embodiments of this application, which are described in conjunction with the accompanying drawings to further illustrate the technical solutions of this application. However, this application is not limited to these embodiments.

[0033] like Figure 8 , Figure 9 As shown, this application discloses a multi-station progressive die for the production of moving spring assembly with visual intelligent detection, comprising: an upper die assembly 31 and a lower die assembly 32, wherein a guide assembly 33 is provided between the upper die assembly 31 and the lower die assembly 32, and the guide assembly 33 guides the relative movement (i.e., mold opening and mold closing) of the upper die assembly 31 and the lower die assembly 32.

[0034] Between the upper die assembly 31 and the lower die assembly 32, there are sequentially arranged a first material pulling assembly 4, a continuous stamping and bending assembly 5, an armature riveting assembly 6, a moving contact riveting assembly 7, a detection assembly 8, a blanking assembly 9, and a second material pulling assembly 10. This intelligent stamping production process simultaneously completes processes such as automatic material feeding, material stamping, bending and adjustment of the moving spring 11, feeding and riveting of the armature 12, feeding and riveting of the moving contact 13, visual intelligent detection, and intelligent screening of defective products within a single die. It has the advantages of high level of intelligence, high production efficiency, high product qualification rate, stable product quality, low production cost, and safe and reliable production.

[0035] The upper mold assembly 31 in this application includes, from top to bottom: upper mold base 311, upper pad 312, upper clamping plate 313, stop plate 314, and upper stripping plate 315; the lower mold assembly 32 includes, from bottom to top: lower pad foot 322, lower mold base 323, lower pad 324, and lower template 325.

[0036] like Figure 10 As shown, the guide assembly 33 in this application uses an inner and outer guide structure with main and auxiliary pillars, including four inner guide pillars 331 and four outer guide pillars 332. The outer guide pillars 332 are connected between the upper mold base 311 and the lower mold base 323, and the inner guide pillars 331 are connected between the upper pad 312 and the lower pad 324. The outer guide pillars 332 and the inner guide pillars 331 improve the guiding accuracy, reliability and stability of the mold.

[0037] like Figure 11 , Figure 12 As shown, the first feeding assembly 4 of this application is used to feed the stamped moving spring sheet 11 strip into the progressive die 3.

[0038] The first material pulling assembly 4 includes a first slider 41 and a connecting rod 42. The first slider 41 is slidably connected to the lower end of the lower mold base 323. One end of the outer side of the first slider 41 is connected to a first spring pull rod 43. The upper end of the first slider 41 is provided with a material pulling guide pin 44, which is used to insert into the guide hole 21 of the material strip of the moving spring sheet 11. The upper end of the material pulling guide pin 44 is provided with a first guide slope 441 that is inclined upward toward the inner side of the progressive die 3. The upper end of the connecting rod 42 is connected to the lower end of the upper mold base 311. The lower end of the connecting rod 42 is provided with a second guide slope 421 toward the inner side of the progressive die 3. The first slider 41 is provided with a connecting groove 411. The opening of the connecting groove 411 is provided with a third guide slope 412 toward the outer side of the progressive die.

[0039] The first slider 41 is held in its initial position by the action of the first spring rod 43. The material guide pin 44 is located below the moving spring strip 2 and is inserted into the guide hole 21, ready for material pulling. When the upper die assembly 31 moves closer to the lower die assembly 32 (i.e., when the stamping process begins), the lower end of the insertion rod 42 is inserted into the insertion slot 411 on the first slider 41. At the same time, the second guide slope 421 at the lower end of the insertion rod 42 abuts against the third guide slope 412 at the opening of the insertion slot 411, pushing the first slider 41 and the material guide pin 44 toward the inside of the progressive die 3 (i.e., the moving direction of the moving spring strip 2). As the first slider 41 moves, the upper end of the material guide pin 44 is inserted into the guide hole 21 of the moving spring strip 11, thereby pulling the moving spring strip 2 toward the inside of the progressive die 3, preparing for subsequent stamping, bending, riveting and other processes. When the stamping process is completed and the upper die assembly 31 moves away from the lower die assembly 32, the insertion rod 42 is pulled out from the insertion slot 411, the first spring pull rod 43 recovers its deformation, and drives the first slider 41 and the material pulling guide pin 44 to move to the initial position. During the movement, due to the design of the first guide slope 441, the material pulling guide pin 44 can smoothly disengage from the guide hole 21 of the moving spring strip 2, preparing for the next material pulling.

[0040] The first spring rod 43 in this application includes a first guide rod 431 and a first spring 432. The first spring 432 is connected to one end of the first guide rod 431, and the other end of the first spring 432 is connected to the first slider 41. When the insertion rod 42 pushes the first slider 41 and the material guide pin 44 to move inward toward the progressive die 3, the first spring 432 is stretched; when the insertion rod 42 is pulled out from the insertion slot 411, the first spring 432 pulls the first slider 41 back to its initial position under the action of elastic force.

[0041] In order to prevent the moving spring strip 2 from moving backward due to inertia or external force after the pulling guide pin 44 pulls out of the guide hole 21, this application provides a thrust guide pin 45 on the lower die base 323. The thrust guide pin 45 is used to insert into the guide hole 21 of the moving spring strip 11. The thrust guide pin 45 is located outside the pulling guide pin 44. The upper end of the thrust guide pin 45 is provided with a fourth guide slope 451. The fourth guide slope 451 is inclined upward towards the inside of the progressive die 3.

[0042] Before processing begins, the upper end of the thrust guide pin 45 is inserted into the guide hole 21 of the moving spring strip 2, located outside the pull guide pin 44. At this time, the thrust guide pin 45 contacts the moving spring strip 11 through its fourth guide slope 451, serving as a positioning and thrust stop. When the insertion rod 42 pushes the first slider 41 to move closer to the inside of the progressive die 3, the pull guide pin 44 is inserted into the guide hole 21 of the moving spring strip 2, pulling the moving spring strip 2 towards the inside of the progressive die 3. Simultaneously, due to the movement of the moving spring strip 2, the upper end of the thrust guide pin 45 slides along the edge of the guide hole 21 of the moving spring strip 2, and gradually disengages from the guide hole 21 of the moving spring strip 2 through its fourth guide slope 451, without affecting the pull process. When the insertion rod 42 moves upward and moves out of the insertion slot 411, the first slider 41 and the material pulling guide pin 44 move to the initial position under the action of the first spring pull rod 43. At this time, the material pulling guide pin 44 is dislodged from the guide hole 21 of the moving spring strip 2. After the material pulling guide pin 44 is completely dislodged from the guide hole 21, the upper end of the thrust guide pin 45 will be inserted into the guide hole 21 of the next position to be processed of the moving spring strip 2, which plays the role of thrust and prepares for the next material pulling and thrusting process.

[0043] In this application, the lower ends of the pull guide pin 44 and the thrust guide pin 45 are provided with elastic elements to facilitate the pull guide pin 44 and the thrust guide pin 45 to disengage from the guide hole 21.

[0044] The second material pulling component 10 in this application has the same structure as the first material pulling component 4, so the second material pulling component 10 will not be described in detail.

[0045] The moving spring strip 2, fed into the progressive die 3 by the first feeding assembly 4, is continuously punched and bent by the continuous punching and bending assembly 5. The sequential bending shape of several connected moving springs 11 is as follows: Figure 13 As shown.

[0046] like Figure 14 , Figure 15As shown, the continuous stamping and bending assembly 5 includes a stamping head 53, a clamping block 54, and a stamping pad 55 connected together. The stamping head 53 is connected to the lower end of the upper pad 312, the clamping block 54 is connected to the lower end of the upper stripper plate 315, and the stamping pad 55 is connected to the lower die plate 325. The movable spring strip 2 is placed on the stamping pad 55. When the upper die assembly 31 moves to the lower die assembly 32, the stamping head 53 presses against the movable spring strip 2 located on the stamping pad 55, thus stamping and bending the movable spring strip 2. For stamping and bending the movable spring strip 2 at different angles, different stamping pads 55 and stamping heads 53 can be set to complete the sequential bending and forming of the movable spring 11.

[0047] like Figure 16 As shown, the material of the moving spring 11 is C5210H, which has high bending strength, good elasticity and wear resistance. However, this results in poor angular stability of the moving spring 11 when it is bent, and it is very easy to exceed the tolerance. Therefore, in order to meet the preset angle θ requirement on the moving spring 11 during continuous stamping and bending, this application provides a side push adjustment mechanism 51 in the continuous stamping and bending assembly 5 to compensate for the variation of the bending angle.

[0048] The side-push adjustment mechanism 51 includes a first adjustment component 511, a first push rod 512, a side-push adjustment block 513, and a second slider 514. The first adjustment component 511 is connected to the upper pad 312. The first push rod 512 is connected to the lower end of the first adjustment component 511. The first push rod 512 can move up and down relative to the upper mold component 31. The lower mold plate 325 is provided with a slide groove 321. The second slider 514 is slidably connected in the slide groove 321. The side-push adjustment block 513 is connected to one side of the upper end of the second slider 514. The side-push adjustment block 513 is used to abut against one side of the moving spring 11.

[0049] When adjustment is required, the first push rod 512 is controlled to move up and down in the slide groove 321 by adjusting the first adjustment component 511. The up and down movement of the first push rod 512 will push the second slider 514 to slide left and right in the slide groove 321, thereby changing the pressure of the side push adjustment block 513 on the side of the moving spring 11, so as to achieve the purpose of adjustment and ultimately ensure that the angle θ is stable within the tolerance.

[0050] The first adjustment assembly 511 in this application includes a first adjustment rod 5111 and a first screw 5112. One end of the first adjustment rod 5111 is connected to the outside of the upper pad 312 by the first screw 5112, and the other end of the first adjustment rod 5111 is slidably connected to the upper pad 312. One end of the first adjustment rod 5111 is provided with a first adjustment slope 1 5113. The upper end of the first push rod 512 is provided with a first adjustment slope 2 5121, and the lower end is provided with a first adjustment slope 3 5122. The second slider 514 is provided with a first adjustment slope 4 5141 near the first push rod 512. The first adjustment slope 1 5113 and the first adjustment slope 2 5121 are in contact with each other, and the first adjustment slope 3 5122 is in contact with the first adjustment slope 4 5141. The length of the first adjusting rod 5111 extending into the upper pad 312 is adjusted by the first screw 5112, thereby driving the first push rod 512 to move up and down, which in turn drives the second slider 514 to slide left and right in the slide groove 321.

[0051] In this application, a return spring 5142 is provided between the side of the second slider 514 away from the first push rod 512 and the groove wall of the slide groove 321. When the first push rod 512 is inserted into the slide groove 321 and pushes the second slider 514 to move closer to the moving spring 11, the return spring 5142 is compressed. When the first push rod 512 is moved out of the slide groove 321, the return spring 5142 pushes the second slider 514 back to the initial position under the action of elastic force.

[0052] like Figure 17 As shown, in order to meet the preset angle β requirement on the moving spring 11, according to the physical and chemical properties of C5210H material, a bending spring angle exceeding the tolerance limit is first compensated during bending, and then the angle tolerance is achieved through a pressing adjustment mechanism 52.

[0053] The downward adjustment mechanism 52 in this application includes a second adjustment component 521, a second push rod 522, and a first elastic element 523. The second adjustment component 521 is connected to the upper pad 312, and the second push rod 522 is connected to the lower end of the second adjustment component 521. The second push rod 522 can move up and down relative to the upper mold assembly 31. The lower end of the second push rod 522 is used to press against the moving spring 11. The first elastic element 523 connects the second push rod 522 and the upper clamping plate 313.

[0054] When adjustment is needed, the vertical position of the second push rod 522 relative to the upper mold assembly 31 is controlled by adjusting the second adjustment component 521. The vertical movement of the second push rod 522 changes the pressure of its lower end on the top of the moving spring 11, achieving the purpose of adjustment and ultimately ensuring that the angle is stable within the tolerance. During the vertical movement of the second push rod 522, the first elastic element 523 is compressed. Under the action of elastic deformation, the first elastic element 523 provides the force for the second push rod 522 to return to its initial position.

[0055] The second adjustment component 521 in this application has the same adjustment principle as the first adjustment component 511, and will not be described in detail here.

[0056] like Figure 18 , Figure 19 As shown, after the moving spring strip 2 is continuously stamped into several moving springs 11 connected together, the armature 12 is riveted together.

[0057] The armature riveting assembly 6 in this application includes an armature feeding mechanism 61 and a pre-riveting mechanism 62. The riveting of the armature 12 and the moving spring 11 requires high accuracy in the relative position between the products. Therefore, the positioning must be accurate and stable before riveting. The armature 12 is accurately fed into the pre-riveting position by the armature feeding mechanism 61, and after the detection component 8 is detected and qualified, the pre-riveting mechanism 62 performs the riveting.

[0058] The armature feeding mechanism 61 in this application includes a first vibratory feeder 611 and a vertical stop assembly 613. The first vibratory feeder 611 is used to feed the armature 12 along the first track 612 to the pre-riveting position. Figure 18 , Figure 19 (The arrow in the image indicates the feeding direction of the first vibratory feeder 611). The vertical stop assembly 613 includes a vertical stop 6131 and a second spring rod 6132. The second spring rod 6132 is connected to one side of the lower template 325 assembly. One end of the second spring rod 6132 extends into the inner side of the progressive die 3. The vertical stop 6131 is connected to a section of the second spring rod 6132. The vertical stop 6131 is used to abut against one side of the armature 12 at the pre-riveting position to position the armature 12 in the vertical direction.

[0059] The first spring rod 43 and the second spring rod 6132 in this application have the same structure.

[0060] When the armature 12 is fed into the pre-riveting position, the detection component 8 detects whether the armature 12 is fed into the correct position. If the detection is qualified, the pre-riveting mechanism 62 pre-rives the armature 12. If it is not qualified, the first material pulling component 4 and the second material pulling component 10 pull the unqualified material out of the progressive die 3 and discard it.

[0061] The pre-riveting mechanism 62 pre-rivets the armature 12 after it has been fed into the correct position. The pre-riveting mechanism 62 includes a seesaw 621, a first pre-riveting punch 622, a first clamping rod 623, and a second clamping rod 624. The seesaw 621 is rotatably connected to the lower die base 323. A pre-riveting sliding block 625 is connected to the upper side of one end of the seesaw 621. The upper end of the pre-riveting sliding block 625 is provided with spaced positioning blocks 6251. The first pre-riveting punch 622, the first clamping rod 623, and the second clamping rod 624 are all connected to the upper die assembly 31. The vertical stop block 6131 is provided with an insertion hole 6133. A first abutting inclined surface 6134 is provided in the insertion hole 6133. A second abutting inclined surface 6241 is provided on the second clamping rod 624. The second abutting inclined surface 6241 cooperates with the first abutting inclined surface 6134.

[0062] When preparing for pre-riveting, the armature 12 is precisely positioned vertically in the pre-riveting position by the vertical stop 6131. ​​The pre-riveting sliding block 625 is connected to the lower die assembly 32 via a seesaw 621, and its upper end is provided with a positioning block 6251 for insertion into the positioning hole 122 of the armature 12. During pre-riveting, when the upper die assembly 31 moves closer to the lower die assembly 32, the second clamping rod 624 passes through the insertion hole 6133 of the vertical stop 6131 and is pressed against the end of the seesaw 621 away from the pre-riveting sliding block 625. Since the second abutting slope 6241 on the second clamping rod 624 cooperates with the first abutting slope 6134 on the vertical stop 6131, the second clamping rod 624 will push the vertical stop 6131 to move away from the armature 12, thereby releasing the vertical positioning of the armature 12. Because one end of the seesaw 621 is pressed by the second clamping rod 624, the end connected to the pre-riveting sliding block 625 will move upward. The positioning block 6251 of the pre-riveting sliding block 625 will be inserted into the positioning hole 122 of the armature 12, ensuring that the position of the armature 12 in the horizontal direction is also fixed. At the same time, the armature 12 pressure rod will press against the armature 12 located at the pre-riveting position to prevent it from moving during the pre-riveting process. At this time, the first pre-riveting punch 622 starts to work, pre-riveting the riveting protrusion 121 on the armature 12 to the two first riveting holes 111 on the moving spring 11.

[0063] After pre-riveting is completed, the pre-riveting is inspected by the inspection component 8. If the inspection is qualified, the first pre-riveting punch 622 is used to press and rivet again. After the riveting is completed, the process proceeds to the next step. If the inspection is not qualified, the material is discarded.

[0064] As shown, the armature 12 is subject to shape and size control after riveting. If the tolerance is exceeded, the riveting may be unreliable, resulting in the loss of functionality of subsequent products. In order to ensure shape and size tolerance and reduce the cost of maintenance and debugging in actual production, this application sets a third adjustment component 63 when riveting the armature 12.

[0065] The third adjustment assembly 63 includes a third adjustment rod 631 and a third screw 632. One end of the third adjustment rod 631 is connected to the outer end of the upper mold assembly 31 through the third screw 632. The other end of the third adjustment rod 631 extends into the inner side of the upper mold assembly 31 and is movably connected to the upper mold assembly 31. The end of the third adjustment rod 631 extending into the upper mold assembly 31 is provided with a third adjustment slope 633. The first pre-riveting punch 622 is movably connected to the upper mold assembly 31 in the vertical direction. The upper end of the first pre-riveting punch 622 is provided with a third adjustment slope 6221. The first adjustment slope 633 and the second adjustment slope 6221 cooperate with each other.

[0066] When adjustment is required, the third adjusting rod 631 can be moved along its axis inside the upper die assembly 31 by rotating the third screw 632. The movement of the third adjusting rod 631 will cause the third adjusting inclined surface 1 633 to interact with the third adjusting inclined surface 2 6221 on the first pre-riveting punch 622. Due to the cooperation between the two inclined surfaces, the movement of the third adjusting rod 631 will be converted into a change in the position and angle of the first pre-riveting punch 622 in the vertical direction, so as to achieve the purpose of adjustment and ensure that the shape and size of the armature 12 are stable within the tolerance after riveting.

[0067] In this application, a shim 6242 is also provided between the upper end of the second clamping rod 624 and the upper mold assembly 31. During use, the shim 6242 can be adjusted to compensate for the wear of the second clamping rod 624.

[0068] like Figure 20 As shown, after the armature 12 is riveted, several movable springs 11 connected together enter the movable contact riveting assembly 7. The movable contact riveting assembly 7 is used to rivet the movable contact 13 to the second riveting hole 112 on the several movable springs 11 connected together after being riveted by the armature riveting assembly 6.

[0069] The moving contact riveting assembly 7 includes a second vibratory plate 71 on which a moving contact 13 is placed. One end of the second vibratory plate 71 has a second track 72, and the end of the second track 72 has a sliding block 73 with a placement groove 732. The second vibratory plate 71 is used to feed the moving contact 13 into the placement groove 732, thus placing the moving contact 13 into the initial position for pre-riveting. Figure 20 The arrow in the image indicates the feeding direction of the second vibratory feeder 71.

[0070] like Figure 21As shown in Figure 22, the riveting assembly of the moving contact 13 also includes a first inclined wedge 74, a second inclined wedge 75, and a second pre-riveting punch 77 arranged opposite to each other. The first inclined wedge 74 and the second inclined wedge 75 are both connected to the upper die assembly 31 and inserted into the lower die assembly 32. The sliding block 73 is slidably connected between the first inclined wedge 74 and the second inclined wedge 75. The first inclined wedge 74 and the second inclined wedge 75 are provided with parallel first inclined wedge surfaces 76 above the sliding block 73. The sliding block 73 is provided with parallel second inclined wedge surfaces 731 on both sides. The second pre-riveting punch 77 is connected to the upper die assembly 31, and the lower end of the second pre-riveting punch 77 extends out of the lower end of the upper die assembly 31.

[0071] During mold opening, the second vibratory feeder 71 sends the moving contact 13 into the second track 72 on it. The moving contact 13 moves along the track and enters the placement groove 732 on the sliding block 73, thereby sending the moving contact 13 to the initial position. During pre-riveting, when the upper mold assembly 31 moves towards the side closer to the lower mold assembly 32, the first inclined wedge 74 and the second inclined wedge 75 also move towards the side closer to the lower mold assembly 32 along with the upper mold assembly 31. The sliding block 73 is located between the first inclined wedge 74 and the second inclined wedge 75, and the second inclined wedge surfaces 731 on both sides of it interact with the first inclined wedge surfaces 76 on the first inclined wedge 74 and the second inclined wedge 75. Due to the design of the wedge surface, when the wedge rod moves towards the lower die assembly 32, the sliding block 73 will rise along the first wedge surface 76. When the sliding block 73 rises to a certain position (i.e., the pre-riveting position), the moving contact 13 is also brought to the pre-riveting position. At this time, the second pre-riveting punch 77 extends from the upper die assembly 31 and performs a pre-riveting operation on the moving contact 13 located at the pre-riveting position, riveting it to the second riveting hole 112 on the moving spring 11. After the pre-riveting is completed, the detection assembly 8 will detect the pre-riveting of the moving contact 13. If the pre-riveting is qualified, the second pre-riveting punch 77 will punch again to complete the riveting.

[0072] After the moving contact 13 is riveted, its shape and size are subject to control. Exceeding these tolerances may result in an unreliable riveting connection, leading to a loss of functionality in subsequent products. To ensure shape and size tolerances and reduce maintenance and debugging costs in actual production, a fourth adjustment component 78 is added to the riveting process of the moving contact 13. The fourth adjustment component 78 is connected to the upper end of the second pre-riveting punch 77. The fourth adjustment component 78 in this application has the same structure and working principle as the third adjustment component 63, and will not be described in detail here.

[0073] like Figure 23 , Figure 24As shown, in the previous production process of the moving spring assembly 1, abnormal situations such as riveting damage or missing riveting often occurred due to the moving contact 13 and armature 12 not being fed into the correct position, resulting in the scrapping of finished products after subsequent relay assembly. In order to avoid this situation, this application sets up a detection component 8 to detect the position and missing riveting of the moving contact 13 and armature 12, as well as to detect possible defects such as poor riveting, misfeeding, poor material cutting, poor bending, and crushing.

[0074] The detection assembly 8 includes a detection camera 81, which has a first lens 82 and a second lens 83. Below the detection camera 81 are a fixing base 84, an adjustable bracket 85, and a positioning base 86 for fixing and adjusting the detection camera 81. The fixing base 84 is connected to the upper mold assembly 31, thus fixing the detection camera 81 at the upper mold assembly 31, and the detection camera 81 is positioned above the product to be detected, i.e., the movable spring 11. The first lens 82 is used to detect the riveting status of the armature 12, and the second lens 83 is used to detect the riveting status of the moving contact 13.

[0075] After the armature 12 is riveted to the moving spring 11, the first lens 82 takes photos or videos of the armature 12 and its riveting area. Through image processing technology, the system can analyze the photos or videos to determine whether the riveting of the armature 12 is accurate and secure, and whether there are any defects or misalignments. Similarly, after the moving contact 13 is riveted to the moving spring 11, the second lens 83 takes photos or videos of the moving contact 13 and its riveting area. Likewise, the system uses image processing technology to analyze the photos or videos to detect the riveting quality of the moving contact 13, including whether it is secure and whether its position is accurate. If it is determined to be a defective product, a command is sent to control the intelligent defective product screening module. Through the automated inspection camera 81 and image processing technology, the riveting status of the armature 12 and the moving contact 13 can be quickly detected, greatly improving inspection efficiency, reducing errors caused by human factors, and improving the accuracy and reliability of the inspection.

[0076] This application includes four sets of detection components 8, which are used to detect the positioning and missing riveting of the moving contact 13 and armature 12, respectively. When a misalignment or missing riveting occurs, the detection component 8 will transmit a stop signal to the punch press, and the punch press will automatically stop production, thereby effectively avoiding the generation of defective products with missing riveting. This effectively solves the abnormal situation of missing riveting of the moving contact 13 or missing riveting of the armature 12 that often occurs in the previous production process.

[0077] like Figure 25As shown, the spring assembly 1 that has passed the inspection by the inspection component 8 is cut off by the blanking component 9. The blanking component 9 in this application includes a selective cutting punch 91, a first movable block 92, a second movable block 93, and a cylinder 94. The first movable block 92 is slidably connected to the upper mold assembly 31. The cylinder 94 is connected to one end of the first movable block 92. The lower end of the first movable block 92 is provided with at least two continuous first cutting grooves 921. The upper end of the second movable block 93 is provided with several continuous second cutting grooves 931. The first cutting grooves 921 and the second cutting grooves 931 cooperate with each other. The selective cutting punch 91 is connected to the lower end of the second movable block 93.

[0078] After passing the inspection by the inspection component 8, when the upper mold component 31 moves closer to the lower mold component 32, it drives the first movable block 92 to move closer to the lower mold component 32. The first movable block 92 pushes the second movable block 93 and the selective cutting punch 91 to move closer to the lower mold component 32 for punching and blanking. At the same time, the cylinder 94 pulls the first movable block 92 to slide along the upper mold component 31. The first movable block 92 and the second movable block 93 are connected by the first cutting groove 921 and the second cutting groove 931. Therefore, as the first movable block 92 moves, it drives the second movable block 93 to move up and down, thereby driving the selective cutting punch 91 to move up and down, completing multiple punching and blanking operations, and ensuring that the qualified moving spring assembly 1 is cut off and blanked.

[0079] Working principle: In use, the moving spring strip 2 is fed into the progressive die 3 through the first feeding assembly 4. It is then first connected and bent by the continuous stamping and bending assembly 5, forming several moving springs 11 connected together. Each moving spring 11 meets the preset angle requirements θ and β. Subsequently, the armature riveting assembly 6 rivets the riveting protrusion 121 of the armature 12 to the first riveting hole 111 on the moving spring 11 formed after stamping and bending, completing the fixed connection between the armature 12 and the moving spring 11. After the armature 12 is riveted, the moving contact riveting assembly 7 rivets the moving contact 13 to the second riveting hole 112 on the moving spring 11, achieving a fixed connection between the moving contact 13 and the moving spring 11. The inspection component 8 performs real-time monitoring throughout the assembly process, checking the riveting quality of the armature 12, the moving contact 13, and the assembled moving spring assemblies 1, ensuring the quality of the armature 12 and moving contact 13 riveting. After these steps are completed, if the inspection is successful, the blanking component 9 will cut off the qualified moving spring assemblies 1. Finally, the second pulling component 10 will carry the remaining moving spring sheet 11 and any unqualified moving spring assemblies 1 on it out of the progressive die 3.

[0080] The specific embodiments described herein are merely illustrative examples. Those skilled in the art to which this application pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the scope defined in this application.

Claims

1. A multi-station progressive die for producing moving spring assemblies with visual intelligent detection, characterized in that, include: An upper mold assembly (31), a lower mold assembly (32), and a guide assembly (33) are provided, wherein the guide assembly (33) is connected between the upper mold assembly (31) and the lower mold assembly (32), and the upper mold assembly (31) and the lower mold assembly (32) are provided with the following in sequence: The first feeding assembly (4) is used to feed the stamped moving spring strip into the progressive die (3); The continuous stamping and bending assembly (5) is used to continuously stamp and bend the moving spring strip entering the progressive die (3), thereby forming the moving spring strip into several moving springs connected together. The armature riveting assembly (6) is used to rivet the riveting protrusion of the armature to the first riveting hole on a plurality of connected moving springs formed by continuous stamping and bending of the continuous stamping and bending assembly (5). The moving contact riveting assembly (7) is used to rivet the moving contact to the second riveting hole on a plurality of moving springs connected together after being riveted by the armature riveting assembly (6); The detection component (8) is used to detect whether the armature riveting is qualified, whether the moving contact riveting is qualified, and whether the combination of several connected moving springs after production is qualified. The material feeding assembly (9) is used to cut and feed the moving spring assembly that has passed the inspection by the inspection assembly (8); The second feeding assembly (10) is used to feed the moving spring strip out of the progressive die (3); The continuous stamping and bending assembly (5) includes: The side-push adjustment mechanism (51) includes a first adjustment component (511), a first push rod (512), a side-push adjustment block (513), and a second slider (514). The first adjustment component (511) is connected to the upper mold assembly (31), the first push rod (512) is connected to the lower end of the first adjustment component (511), and the first push rod (512) can move up and down relative to the upper mold assembly (31). The lower mold assembly (32) is provided with a slide groove (321), and the second slider (514) is slidably connected in the slide groove (321). The side-push adjustment block (513) is connected to one side of the upper end of the second slider (514), and the side-push adjustment block (513) is used to abut against one side of the moving spring. The downward adjustment mechanism (52) includes a second adjustment component (521), a second push rod (522), and a first elastic element (523). The second adjustment component (521) is connected to the upper mold assembly (31), and the second push rod (522) is connected to the lower end of the second adjustment component (521). The second push rod (522) can move up and down relative to the upper mold assembly (31). The lower end of the second push rod (522) is used to press against the moving spring. The first elastic element (523) connects the second push rod (522) and the upper mold assembly (31).

2. The multi-station progressive die for producing moving spring assemblies with visual intelligent detection according to claim 1, characterized in that, The first material pulling assembly (4) includes a first slider (41) and a plug rod (42); the first slider (41) is slidably connected to the upper end of the lower mold assembly (32), and a first spring pull rod (43) is connected to one end of the outer side of the first slider (41). The first slider (41) is provided with a material pulling guide pin (44), which is used to be inserted into the guide hole of the moving spring strip. The upper end of the material pulling guide pin (44) is provided with a first guide slope (441) that is inclined upward toward the inner side of the progressive die (3); the upper end of the plug rod (42) is connected to the lower end of the upper mold assembly (31), and the lower end of the plug rod (42) is provided with a second guide slope (421) toward the inner side of the progressive die (3). The first slider (41) is provided with a plug groove (411), and the groove opening of the plug groove (411) is provided with a third guide slope (412) toward the outer side of the progressive die. When the upper mold assembly (31) moves toward the side closer to the lower mold assembly (32), the plug rod (42) is inserted into the plug groove (411), the first guide slope (441) abuts against the second guide slope (421), the plug rod (42) pushes the first slider (41) to move toward the inside of the progressive die (3), and the upper end of the pull guide pin (44) is inserted into the guide hole of the moving spring strip, thereby pulling the moving spring strip toward the inside of the progressive die (3); When the upper mold assembly (31) moves away from the lower mold assembly (32), the insertion rod (42) moves upward and moves out of the insertion slot (411), the first spring pull rod (43) drives the material pulling guide pin (44) to move towards the first spring pull rod (43), and the material pulling guide pin (44) disengages from the guide hole of the moving spring strip through the first guide slope (441).

3. The multi-station progressive die for producing moving spring assemblies with visual intelligent detection according to claim 2, characterized in that, The lower die assembly (32) is connected to a thrust guide pin (45) at one end away from the inner side of the progressive die (3). The thrust guide pin (45) is used to insert into the guide hole of the moving spring strip. The thrust guide pin (45) is located outside the pull guide pin (44). The upper end of the thrust guide pin (45) is provided with a fourth guide slope (451). The fourth guide slope (451) is inclined upward towards the inner side of the progressive die (3). When the plug rod (42) pushes the first slider (41) to move closer to the inside of the progressive die (3), the upper end of the thrust guide pin (45) disengages from the guide hole of the moving spring strip through the fourth guide ramp (451). When the plug rod (42) moves upward and moves out of the plug groove (411), the upper end of the thrust guide pin (45) is inserted into the guide hole of the moving spring strip.

4. The multi-station progressive die for producing moving spring assemblies with visual intelligent detection according to claim 1, characterized in that, When the upper mold assembly (31) drives the first push rod (512) to be inserted into the slide groove (321), the first push rod (512) abuts against the side of the second slider (514) away from the side push adjustment block (513). The first adjustment assembly (511) drives the first push rod (512) to move up and down, thereby pushing the second slider (514) to slide left and right, thereby adjusting the magnitude of the force of the side push adjustment block (513) against the moving spring. When the upper mold assembly (31) drives the second push rod (522) to move closer to the lower mold assembly (32), the lower end of the second push rod (522) presses against the moving spring. The second adjustment assembly (521) drives the second push rod (522) to move up and down, thereby adjusting the force of the second push rod (522) pressing against the moving spring.

5. The multi-station progressive die for producing moving spring assemblies with visual intelligent detection according to claim 1, characterized in that, The armature riveting assembly (6) includes an armature feeding mechanism (61), which includes: a first vibratory plate (611) with a first track (612) connected to one side, an armature placed on the first vibratory plate (611), and the first vibratory plate (611) is used to transport the armature along the first track (612) to the pre-riveting position. The vertical stop assembly (613) includes a vertical stop (6131) and a second spring rod (6132). The second spring rod (6132) is connected to one side of the lower die assembly (32). One end of the second spring rod (6132) extends into the inner side of the progressive die (3). The vertical stop (6131) is connected to one end of the second spring rod (6132). The vertical stop (6131) is used to abut against one side of the armature at the feed-in pre-riveting position to position the armature in the vertical direction.

6. The multi-station progressive die for producing moving spring assemblies with visual intelligent detection according to claim 5, characterized in that, The armature riveting assembly (6) further includes a pre-riveting mechanism (62), which includes a seesaw (621), a first pre-riveting punch (622), a first clamping rod (623), and a second clamping rod (624). The seesaw (621) is rotatably connected to the lower die assembly (32). A pre-riveting sliding block (625) is connected to the upper side of one end of the seesaw (621). The upper end of the pre-riveting sliding block (625) is provided with spaced positioning blocks (6251). The first pre-riveting punch (622), the first clamping rod (623), and the second clamping rod (624) are all connected to the upper die assembly (31). The vertical stop assembly (613) is provided with a plug hole (6133), and a first abutting slope (6134) is provided in the plug hole (6133). The second clamping rod (624) is provided with a second abutting slope (6241), and the second abutting slope (6241) cooperates with the first abutting slope (6134). When the upper die assembly (31) moves closer to the lower die assembly (32), the second clamping rod (624) passes through the insertion hole (6133) and presses against the end of the seesaw (621) away from the pre-riveting sliding block (625). The second clamping rod (624) pushes the vertical stop (6131) away from the armature through the cooperation of the first abutting inclined surface (6134) and the second abutting inclined surface (6241). The end of the seesaw (621) connected to the pre-riveting sliding block (625) moves upward, causing the positioning block (6251) of the pre-riveting sliding block (625) to be inserted into the positioning hole of the armature. The armature pressing rod presses against the armature located at the pre-riveting position. The first pre-riveting punch (622) pre-rivets the riveting protrusion on the armature to the two first riveting holes on the moving spring.

7. The multi-station progressive die for producing moving spring assemblies with visual intelligent detection according to claim 6, characterized in that, The upper end of the first pre-riveting punch (622) is connected to a third adjusting assembly (63). The third adjusting assembly (63) includes a third adjusting rod (631) and a third screw (632). One end of the third adjusting rod (631) is connected to the outer side of the upper die assembly (31) through the third screw (632). The other end of the third adjusting rod (631) extends into the inner side of the upper die assembly (31) and is movably connected to the upper die assembly (31). The end of the third adjusting rod (631) extending into the upper die assembly (31) is provided with a third adjusting inclined surface (633). A pre-riveting punch (622) is movably connected to the upper die assembly (31) in a vertical direction. The upper end of the first pre-riveting punch (622) is provided with a third adjusting slope two (6221). The third adjusting slope one (633) is in contact with the third adjusting slope two (6221). The third screw (632) is used to adjust the length of the third adjusting rod (631) inserted into the inner side of the progressive die (3). Thus, the stamping position and angle of the first pre-riveting punch (622) are adjusted by the cooperation of the third adjusting slope one (633) and the third adjusting slope two (6221).

8. The multi-station progressive die for producing moving spring assemblies with visual intelligent detection according to claim 1, characterized in that, The moving contact riveting assembly (7) includes: The second vibrating plate (71) has a second track (72) at one end, a sliding block (73) at the end of the second track (72), a placement groove (732) on the sliding block (73), a moving contact on the second vibrating plate (71), and the second vibrating plate (71) is used to send the moving contact into the placement groove (732). The first inclined wedge (74) and the second inclined wedge (75) are respectively connected to the upper mold assembly (31) and inserted into the lower mold assembly (32). The sliding block (73) is slidably connected between the first inclined wedge (74) and the second inclined wedge (75). The first inclined wedge (74) and the second inclined wedge (75) are provided with parallel first inclined wedge surfaces (76) above the sliding block (73). The sliding block (73) is provided with parallel second inclined wedge surfaces (731) on both sides. A second pre-riveting punch (77) is connected to the upper die assembly (31), and the lower end of the second pre-riveting punch (77) extends out of the lower end of the upper die assembly (31); When the upper die assembly (31) moves toward the side closer to the lower die assembly (32), the first inclined wedge (74) and the second inclined wedge (75) move toward the side closer to the lower die assembly (32), thereby pushing the sliding block (73) to slide upward along the first inclined wedge (76) through the second inclined wedge (731) to the pre-riveting position. The second pre-riveting punch (77) pre-rivets the moving contact located at the pre-riveting position and rivets the moving contact to the second riveting hole on the moving spring.

9. The multi-station progressive die for producing moving spring assemblies with visual intelligent detection according to claim 1, characterized in that, The detection component (8) includes a detection camera (81), which is provided with a first lens (82) and a second lens (83). The detection camera (81) is positioned above the moving spring. The first lens (82) is used to detect the riveting state of the armature, and the second lens (83) is used to detect the riveting state of the moving contact.

10. The multi-station progressive die for producing moving spring assemblies with visual intelligent detection according to claim 1, characterized in that, The blanking assembly (9) includes a selective cutting punch (91), a first movable block (92), a second movable block (93), and a cylinder (94). The first movable block (92) is slidably connected to the upper mold assembly (31). The cylinder (94) is connected to one end of the first movable block (92). The lower end of the first movable block (92) is provided with at least two continuous first cutting grooves (921). The upper end of the second movable block (93) is provided with several continuous second cutting grooves (931). The first cutting grooves (921) cooperate with the second cutting grooves (931). The selective cutting punch (91) is connected to the lower end of the second movable block (93). The selective cutting punch (91) is used to cut and blank the moving spring assembly that has passed the inspection of the inspection assembly (8).

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