Rapid forming device for stamping die

Abstract

The invention provides a rapid forming device for a stamping die, which is applied to the field of stamping dies and comprises a movable die set and a fixed die set, the movable die set and the fixed die set are used for simultaneously stamping and forming an N-type workpiece and a shell workpiece, a pin column is assembled between the N-type workpiece and the shell workpiece, the movable die set comprises a movable die seat, and a female die core and a female die column are arranged on the movable die seat; the fixed die set comprises a fixed die base, and a male die core and a slide mechanism are arranged on the fixed die base. Punching assembling mechanisms are further symmetrically arranged on the two sides of the fixed die base. According to the automatic pin column forming and assembling machine, the automation degree is high, forming of an N-type workpiece and a shell workpiece and assembling of pin columns can be completed at the same time in the one-time punching process, multiple traditional punching and assembling procedures are integrated into a continuous operation process, the production efficiency is improved, the production cost is reduced, and the production efficiency is improved. And the production efficiency of the automobile hinge is improved.

Description

Technical Field

[0001] The present application relates to the field of stamping dies, and in particular to a stamping die rapid prototyping device. Background Art

[0002] As the key connecting parts between the car body and the doors, hood, trunk lid and other parts, the quality and performance of automobile hinges directly affect the safety, comfort and overall quality of the car. In the automobile manufacturing industry, the production efficiency and quality requirements of automobile hinges are increasing day by day.

[0003] In the traditional stamping production process of automobile hinges, there are many problems that need to be solved. First, the production efficiency is low. Traditional stamping dies often need to go through multiple independent stamping processes to form different parts of the automobile hinges respectively, and then perform assembly operations. Each stamping process requires precise positioning and adjustment, which not only consumes a lot of time, but also easily produces cumulative errors during multiple positioning and adjustment processes, affecting the final accuracy of the product. At the same time, the operation of multiple processes increases the complexity of the production process, reduces the overall production efficiency, and cannot meet the needs of large-scale and high-efficiency production in the modern automobile manufacturing industry.

[0004] In traditional automobile hinge production, the assembly of parts such as pins is usually an independent operation after stamping. This separate assembly method is easily affected by human and environmental factors, resulting in inaccurate and unstable assembly. For example, when inserting the pin into the punched workpiece hole, the pin may not be inserted properly or tilted. At the same time, the pin holes on the two sets of accessories of the automobile hinge are distributed punched, and there is a concentricity deviation problem during assembly, which affects the connection strength and flexibility of the automobile hinge. In addition, the traditional assembly method requires additional labor and equipment, which increases production costs and production cycles.

[0005] In summary, the traditional automobile hinge stamping die has obvious deficiencies in production efficiency, molding accuracy and assembly quality, and cannot meet the needs of modern automobile manufacturing industry for high-quality and high-efficiency production. Therefore, the development of a new type of stamping die rapid prototyping device, which can simultaneously complete the molding and assembly of multiple parts of automobile hinges in one stamping process, improve production efficiency, ensure molding accuracy and assembly quality, has important practical significance and industrial application value. Summary of the invention

[0006] The purpose of the present application is to solve the technical problems of low production efficiency, poor molding accuracy and low assembly quality of the existing automobile hinge stamping die. Compared with the existing technology, a stamping die rapid prototyping device is provided, including a movable die group and a fixed die group, which are used for simultaneously stamping and forming an N-type workpiece and a shell workpiece, and assembling a pin between the N-type workpiece and the shell workpiece. The movable die group includes a movable die seat, a die core is fixed at the bottom of the movable die seat, a die column is slidably connected in the die core along the vertical direction, and a vertical slide groove matching and penetrating the die column is provided on the die core; The fixed die assembly includes a fixed die seat, a convex die core is fixed on the top of the fixed die seat, a sliding mechanism is slidably connected to one side of the fixed die seat in the horizontal direction, a side cavity matching the sliding mechanism is provided on one side of the convex die core, the sliding mechanism and the side cavity are matched to form a stamping cavity matching the N-type workpiece, the convex die core is matched to the concave die core to form a stamping cavity matching the shell workpiece, and a first arc portion is provided in the concave die core to drive the edge of the flat shell workpiece to bend; Punching assembly mechanisms for forming a first punching hole on the N-shaped workpiece and a second punching hole on the shell workpiece are symmetrically arranged on both sides of the fixed die seat; A material storage guide groove for storing pins is provided on the top of the punching assembly mechanism on one side; A transmission mechanism for driving the die column and the die core to move downward in steps is arranged on the top of the movable die assembly.

[0007] Furthermore, the N-type workpiece and the shell workpiece are both plate-shaped structures before stamping, the N-type workpiece is provided with a first assembly hole, and the shell workpiece is provided with a second assembly hole; The top of the male mold core is provided with an alignment block corresponding to the second assembly hole, and the bottom of the female mold column is provided with an alignment groove corresponding to the alignment block.

[0008] Furthermore, the slide mechanism includes a main slide block, a side slide groove is provided on one side of the punch core, the main slide block is slidably connected to one side of the punch core through a slide rail matching the side slide groove, the top of the main slide block is rotatably connected to a flip slide block, a torsion spring is sleeved on the rotating shaft of the flip slide block, and the torsion spring has an elastic force that drives the flip slide block to flip close to the inclined sliding sleeve; Two right-angle bending parts are arranged on both sides of the N-shaped workpiece, and the main slider block and the flip slider block are arranged with a second arc part and a third arc part corresponding to the right-angle bending parts after being matched. Furthermore, an inclined sliding sleeve is fixed to a side of the main slider block away from the flip slider block, and an inclined guide column matching the inclined sliding sleeve is fixed to one side of the movable mold base.

[0009] Furthermore, the movable die seat is provided with a plurality of upper sliding sleeves, the fixed die seat is fixed with a sliding column matching the upper sliding sleeves, the sliding column is also sleeved with a return spring, and the return spring has an elastic force to drive the movable die seat away from the fixed die seat.

[0010] Furthermore, the transmission mechanism includes a transmission sleeve, the top of which is fixedly connected to the output end of the main hydraulic mechanism, a transmission rod is slidably connected inside the transmission sleeve along the vertical direction, a tensioning spring is clamped between the transmission rod and the transmission sleeve, and the tensioning spring has an elastic force that drives the transmission rod to move downward and contact the top of the die column.

[0011] Furthermore, a punching slot is provided on one side of the flip slider block opposite to the main slider block, and two groups of side holes are symmetrically provided on both sides of the die core; The punching assembly mechanism comprises a guide sleeve fixed on the top of the fixed die seat, a punching rod is slidably connected in the guide sleeve, and the ends of the two groups of punching rods that are far away are fixedly connected to the output end of the auxiliary hydraulic mechanism, a plurality of pins are evenly spaced in the material storage guide groove, and a feed groove connected to the bottom of the material storage guide groove is provided on the top of the guide sleeve; A proximity sensor for controlling the opening and closing of the punching assembly mechanism is also fixed on one side of the top of the fixed die seat.

[0012] Furthermore, when the female die core moves downward to mate with the male die core, the side hole is coaxially arranged with the punch rod; when the sliding mechanism is horizontally displaced to mate with the side cavity of the male die core, the punching groove is coaxially arranged with the punch rod.

[0013] Furthermore, a material return opening groove is provided on one side opposite to the side hole, and a groove depth of the material return opening groove is greater than twice the plate thickness of the N-type workpiece or the shell workpiece.

[0014] Furthermore, the diameters of the pin, the punching rod and the side hole are equal to the diameter of the punching slot, and the diameter of the material withdrawal opening slot is larger than the diameter of the punching slot; The two ends of the pin are punched by the punching rod to form punching rivet heads, and the diameter of the punching rivet heads is smaller than the diameter of the material withdrawal opening groove.

[0015] Compared with the prior art, the advantages of this application are: The invention has a high degree of automation, reduces the number of manual operations, reduces the labor intensity and work risks of workers, and can simultaneously complete the forming of the N-type workpiece and the shell workpiece and the assembly of the pin in one stamping process, integrating the traditional multi-step stamping and assembly processes into a continuous operation process. The production efficiency of automobile hinges is improved, and the needs of large-scale production in the automobile manufacturing industry are met.

[0016] The integrated punching assembly mechanism realizes the precise assembly of the pins, and completes the punching and pin assembly simultaneously during the stamping process, avoiding the problem of inaccurate assembly caused by human and environmental factors in traditional assembly methods, improving the overall assembly quality and reliability of automobile hinges, and is suitable for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front structure of this application; Figure 2 This is a schematic diagram of the bottom structure of this application; Figure 3 A schematic diagram of the stamping process of this application; Figure 4 This is a schematic diagram of the explosion structure of this application; Figure 5 This is a schematic diagram of the bottom explosion structure of the moving mold assembly proposed in this application; Figure 6 A schematic diagram of the top explosion structure of the moving die set proposed in this application; Figure 7 This is a schematic diagram of the explosion structure of the fixed die set proposed in this application; Figure 8 It is a schematic diagram of the exploded structure of the punching assembly mechanism and the material storage guide trough proposed in this application; Fig. 9 It is a structural schematic diagram of the sliding mechanism proposed in this application; Fig.10 A schematic diagram showing the comparison of the states of the die column when it moves downwards as proposed in this application; Fig.11 It is a schematic diagram for comparing the states of the die core when it moves downwards as proposed in this application; Fig.12 It is a schematic diagram of a local cross-sectional structure in this application; Fig.13 for Fig.12 Schematic diagram of the enlarged structure of part A in the middle.

[0018] Description of the numbers in the figure: 1. Moving die set; 11. Moving die seat; 111. Upper sliding sleeve; 12. Oblique guide pillar; 13. Concave die core; 131. First arc portion; 132. Vertical slide groove; 133. Side hole; 1331. Material withdrawal opening groove; 14. Concave die pillar; 141. Alignment groove; 2. Fixed die set; 201. Proximity sensor; 21. Fixed die seat; 211. Sliding pillar; 212. Return spring; 22. Punch core; 221. Alignment block; 222. Side cavity; 223. Side slide groove; 3. Transmission mechanism; 31. Transmission sleeve; 3 2. Transmission rod; 33. Tension spring; 4. Material storage guide groove; 5. Sliding mechanism; 501. Punching groove; 502. Second arc portion; 503. Third arc portion; 51. Main sliding block; 52. Inclined sliding sleeve; 53. Flip sliding block; 6. Punching assembly mechanism; 61. Guide sleeve; 611. Feed trough; 62. Punching rod; 7. N-type workpiece; 71. First assembly hole; 72. First punching hole; 8. Shell workpiece; 81. Second assembly hole; 82. Second punching hole; 9. Pin; 91. Stamping rivet head. DETAILED DESCRIPTION

[0019] The embodiments will be combined with the drawings in the specification to clearly and completely describe the technical solution of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of the present application.

[0020] Example: The present invention provides a stamping die rapid prototyping device, please refer to Figure 1 - Fig.13 It is mainly composed of a movable die set 1 and a fixed die set 2, which cooperate with each other to complete the stamping and assembly process of the automobile hinge.

[0021] See also Figure 4 - Figure 6 The movable die set 1 includes a movable die base 11. The movable die base 11 serves as the basic supporting component of the movable die set. A die core 13 is fixed at the bottom. The die core 13 is one of the key components for realizing the stamping forming of the shell workpiece 8. A die column 14 is slidably connected in the vertical direction in the die core 13. A vertical slide groove 132 matching and penetrating the die column 14 is provided on the die core 13 to provide guidance and support for the up and down sliding of the die column 14.

[0022] See also Figure 7The fixed die set 2 includes a fixed die seat 21, which is the supporting structure of the fixed die set. A convex die core 22 is fixed on the top of the fixed die seat. The convex die core 22 cooperates with the concave die core 13 to stamp the shell workpiece 8 together. One side of the fixed die seat 21 is slidably connected with a slide mechanism 5 in the horizontal direction. One side of the convex die core 22 is provided with a side cavity 222 matching the slide mechanism 5. The slide mechanism 5 and the side cavity 222 are matched to form a stamping cavity matching the N-type workpiece 7, so as to realize the stamping of the N-type workpiece 7. The convex die core 22 is matched with the concave die core 13 to form a stamping cavity matching the shell workpiece 8. The concave die core 13 is provided with a first arc portion 131 to drive the edge of the flat shell workpiece 8 to bend. The edge of the shell workpiece 8 is bent by the first arc portion 131 during the stamping process to meet the shape requirements of the automobile hinge.

[0023] Specifically, punching assembly mechanisms 6 for forming a first punching hole 72 on the N-shaped workpiece 7 and a second punching hole 82 on the shell workpiece 8 are symmetrically provided on both sides of the fixed die base 21. A material storage guide groove 4 for storing the pin 9 is provided on the top of the punching assembly mechanism 6 on one side, providing storage and guiding functions for the automatic conveying and assembly of the pin 9.

[0024] A transmission mechanism 3 is provided on the top of the movable die assembly 1 for driving the die column 14 and the die core 13 downward in steps. Through the precise control of the transmission mechanism 3, the downward movement of the die column 14 and the die core 13 in different stages is realized to ensure the smooth progress of the stamping process.

[0025] The N-type workpiece 7 and the shell workpiece 8 are both plate-shaped structures before stamping, which is to facilitate positioning and stamping in the mold. The N-type workpiece 7 is provided with a first assembly hole 71, and the shell workpiece 8 is provided with a second assembly hole 81. These two assembly holes are pre-punched holes for assembling the N-type workpiece 7, the shell workpiece 8 and the vehicle body.

[0026] The top of the punch core 22 is provided with an alignment block 221 corresponding to the second assembly hole 81, and the bottom of the die column 14 is provided with an alignment groove 141 corresponding to the alignment block 221. Before stamping, when the N-type workpiece 7 and the shell workpiece 8 are placed in the mold, the second assembly hole 81 of the shell workpiece 8 is placed on the alignment block 221 of the punch core 22 to achieve preliminary positioning. By moving the die column 14 downward, the alignment block 221 is aligned with the alignment groove 141, so that the die column 14 and the punch core 22 are aligned and the flat shell workpiece 8 is clamped again, which can ensure the accurate alignment of the N-type workpiece 7 and the shell workpiece 8 during the stamping process and ensure the accuracy of stamping.

[0027] See also Fig. 9The slide mechanism 5 is a key component for realizing the complex shape stamping of the N-shaped workpiece 7. The slide mechanism 5 includes a main slide block 51, and a side slide groove 223 is provided on one side of the punch core 22. The main slide block 51 is slidably connected to one side of the punch core 22 through a slide rail matching the side slide groove 223. This sliding connection method can ensure the stable movement of the main slide block 51 in the horizontal direction. The top of the main slide block 51 is rotatably connected to a flip slide block 53, and a torsion spring is sleeved on the rotating shaft of the flip slide block 53. The torsion spring has an elastic force to drive the flip slide block 53 to flip close to the inclined sleeve 52.

[0028] Two right-angled bends are provided on both sides of the N-type workpiece 7, and the main slider block 51 and the flip slider block 53 are matched to form a second arc portion 502 and a third arc portion 503 corresponding to the right-angled bends. During the stamping process, when the slider mechanism 5 moves horizontally to match the side cavity 222 of the punch core 22, the second arc portion 502 and the third arc portion 503 can accurately form the right-angled bend of the N-type workpiece 7, thereby ensuring the shape accuracy of the N-type workpiece 7. An inclined sleeve 52 is also fixed to the side of the main slider block 51 away from the flip slider block 53, and an inclined guide column 12 matching the inclined sleeve 52 is fixed to one side of the movable die seat 11. During the stamping process, when the movable die holder 11 moves downward, the inclined guide column 12 will be inserted into the inclined sliding sleeve 52. Through the cooperation between the inclined guide column 12 and the inclined sliding sleeve 52, the main sliding block 51 is driven to move in the horizontal direction, thereby realizing the horizontal displacement of the sliding mechanism 5 and completing the stamping of the N-type workpiece 7.

[0029] See also Figure 2 , a plurality of upper sliding sleeves 111 are provided on the movable die seat 11, and a sliding column 211 matching the upper sliding sleeves 111 is fixed on the fixed die seat 21, and a reset spring 212 is also sleeved on the sliding column 211. The reset spring 212 has an elastic force to drive the movable die seat 11 away from the fixed die seat 21. During the stamping process, the movable die seat 11 moves downward along the sliding column 211, approaches the fixed die seat 21, and completes the stamping action. When the stamping is completed, under the action of the reset spring 212, the movable die seat 11 will move upward along the sliding column 211, away from the fixed die seat 21, to achieve the reset of the mold. This guiding and reset structure design can ensure the stability and accuracy of the movable die seat 11 during the up and down movement process, and also prepare for the next stamping.

[0030] See also Fig.10 - Fig.11Furthermore, the transmission mechanism 3 includes a transmission sleeve 31, the top of which is fixedly connected to the output end of the main hydraulic mechanism, and the main hydraulic mechanism provides power for the transmission sleeve 31 so that it can move in the vertical direction. A transmission rod 32 is slidably connected in the transmission sleeve 31 along the vertical direction, and a tension spring 33 is clamped between the transmission rod 32 and the transmission sleeve 31. The tension spring 33 has an elastic force that drives the transmission rod 32 to move downward and conflict with the top of the die column 14. At the beginning of stamping, the main hydraulic mechanism drives the transmission sleeve 31 to move downward. Under the action of the tension spring 33, the transmission rod 32 first conflicts with the top of the die column 14, driving the die column 14 to move downward. When the die column 14 moves down to conflict with the top of the punch core 22, the transmission sleeve 31 continues to move downward, and the die core 13 is pushed downward by the transmission rod 32, thereby realizing the function of driving the die column 14 and the die core 13 to move downward in steps. This step-by-step driving design can accurately control the downward movement sequence and displacement of the die column 14 and the die core 13 according to the needs of the stamping process, thereby ensuring the smooth progress of the stamping process.

[0031] For further information, please refer to Fig.12 - Fig.13 , a punching groove 501 is provided on the side opposite to the main slider block 51 of the flip slider block 53, and two groups of side holes 133 are symmetrically provided on both sides of the female die core 13. The punching assembly mechanism 6 includes a guide sleeve 61 fixed on the top of the fixed die seat 21, and a punching rod 62 is slidably connected in the guide sleeve 61. The ends of the two groups of punching rods 62 that are far away are fixedly connected to the output end of the auxiliary hydraulic mechanism, and the auxiliary hydraulic mechanism provides power for the punching rod 62 so that it can move left and right in the guide sleeve 61. A number of pins 9 are evenly spaced in the storage guide groove 4, and a feed groove 611 connected to the bottom of the storage guide groove 4 is provided on the top of the guide sleeve 61. During the stamping process, when the female die core 13 moves down to match the male die core 22, the side hole 133 is coaxially arranged with the punching rod 62; when the slider mechanism 5 is horizontally displaced to match the side cavity 222 of the male die core 22, the punching groove 501 is coaxially arranged with the punching rod 62. At this time, the auxiliary hydraulic mechanism drives the punching rod 62 to move downward, and the punching rod 62 passes through the side hole 133 and the punching slot 501 in sequence to form a second punching hole 82 on the shell workpiece 8 and a first punching hole 72 on the N-type workpiece 7 .

[0032] After completing the punching action, the two groups of punching rods 62 retract and reset. During the reset process of the punching rod 62 on one side of the storage guide groove 4, when the end retracts to the side of the storage guide groove 4 away from the mold, the pins 9 accumulated in the storage guide groove 4 lose their support and fall into the guide sleeve 61 through the feed groove 611. At this time, the two groups of punching rods 62 perform a relatively close displacement action again. The pins 9 in the guide sleeve 61 pass through the first punching hole 72 of the N-type workpiece 7 and the second punching hole 82 of the shell workpiece 8 in turn through the thrust of the punching rods 62, and then the two ends of the pins 9 are punched by the two groups of punching rods 62 to form a punching rivet head 91, thereby completing the assembly of the pins 9 between the N-type workpiece 7 and the shell workpiece 8. A proximity sensor 201 for controlling the opening and closing of the punching assembly mechanism 6 is also fixed to one side of the top of the fixed die base 21. The proximity sensor 201 can monitor the position and status of the die in real time. When the die moves to a suitable position, the auxiliary hydraulic mechanism is controlled to start and drive the punching rod 62 to perform punching and pin assembly operations, thereby ensuring the accuracy and timeliness of the punching and assembly processes.

[0033] It should be noted that a material withdrawal opening groove 1331 is provided on the opposite side of the side hole 133, and the groove depth of the material withdrawal opening groove 1331 is greater than twice the plate thickness of the N-type workpiece 7 or the shell workpiece 8. The diameters of the pin 9, the punching rod 62 and the side hole 133 are equal to the diameter of the punching groove 501, and the diameter of the material withdrawal opening groove 1331 is greater than the diameter of the punching groove 501; the two ends of the pin 9 are punched by the punching rod 62 to form a punching rivet head 91, and the diameter of the punching rivet head 91 is smaller than the diameter of the material withdrawal opening groove 1331. After the punching of the N-type workpiece 7 and the shell workpiece 8 is completed, the punched waste will stay in the punching slot 501. When the punching rod 62 pushes the pin 9 into the punching slot 501, the waste in the punching slot 501 will be extruded by the pin 9 and smoothly moved down and discharged from the mold through the material withdrawal opening slot 1331, avoiding the waste from accumulating in the punching slot 501 and affecting the normal operation of the mold and the quality of the next punching. At the same time, this material withdrawal structure design also facilitates the cleaning and maintenance of the mold.

[0034] Working principle: Mold preparation stage: Before the stamping operation, the mold needs to be prepared first. Place the plate-shaped N-type workpiece 7 and the shell workpiece 8 in the corresponding mold positions respectively. In the specific operation, place the N-type workpiece 7 between the side cavity 222 of the punch core 22 and the slide mechanism 5; place the shell workpiece 8 between the die core 13 and the punch core 22, so that the second assembly hole 81 of the shell workpiece 8 is aligned with the alignment block 221 on the punch core 22. At the same time, place an appropriate amount of pins 9 neatly in the storage guide groove 4 to ensure that the pins 9 can smoothly pass through the feed groove 611 to enter the punching position in subsequent operations.

[0035] Stamping and forming stage: After the preparation work is completed, the stamping machine is started and the main hydraulic mechanism starts to work. The main hydraulic mechanism drives the transmission sleeve 31 to move downward. Under the action of the tension spring 33, the transmission rod 32 first contacts the top of the die column 14, driving the die column 14 to move downward along the vertical slide groove 132 in the die core 13. During the downward movement of the die column 14, it gradually approaches and aligns with the punch core 22, clamping the shell workpiece 8 to avoid the occurrence of stamping deviation during the subsequent stamping process. After the die column 14 moves down to the right position, the transmission sleeve 31 continues to move down and contacts the movable die seat 11. During the downward movement of the movable die seat 11, the edge of the die core 13 presses the edge of the flat shell workpiece 8 to gradually deform downward. When the die core 13 moves down to the right position, the first arc portion 131 contacts and applies pressure to the part to be bent of the shell workpiece 8, causing it to gradually bend, forming a bending structure that meets the shape requirements of the automobile hinge.

[0036] At the same time, the inclined guide column 12 on one side of the movable mold base 11 is gradually inserted into the inclined sliding sleeve 52 on one side of the main slider block 51. As the movable mold base 11 continues to move downward, the inclined guide column 12 drives the main slider block 51 to move horizontally along the side slide groove 223 on one side of the punch core 22 through the inclined sliding sleeve 52. During the movement of the main slider block 51, the top flip slider block 53 is driven to move together. When the main slider block 51 and the flip slider block 53 move to the position of matching with the side cavity 222 of the punch core 22, the second arc portion 502 and the third arc portion 503 formed by the matching of the main slider block 51 and the flip slider block 53 are tightly fitted with the right-angled bend portion of the N-type workpiece 7, and the N-type workpiece 7 is stamped and formed to form an accurate shape.

[0037] Punching and assembly stage: While the N-type workpiece 7 and the shell workpiece 8 are being punched and formed, the punching assembly mechanism 6 starts to work. When the female die core 13 moves down to the right position, the side hole 133 is coaxially arranged with the punching rod 62; when the slide mechanism 5 is horizontally displaced and aligned with the side cavity 222 of the male die core 22, the punching slot 501 is also coaxially arranged with the punching rod 62. At this time, the proximity sensor 201 detects that the mold has reached the appropriate position, controls the auxiliary hydraulic mechanism to start, and drives the two sets of punching rods 62 to move relative to each other.

[0038] The punching rod 62 first passes through the side holes 133 on both sides of the die core 13 to punch out the second punching hole 82 on the shell workpiece 8. Then, the punching rod 62 continues to move, passes through the punching slots 501 on the flip slider 53 and the main slider 51, punches out the first punching hole 72 on the N-type workpiece 7, and pushes the punching waste into the punching slot 501 for storage. During the second relative approach displacement of the punching rod 62, on the one hand, the pin 9 in the storage guide groove 4 is pushed out through the feed slot 611, and on the other hand, the waste in the punching slot 501 is pushed to the material withdrawal opening slot 1331 by the thrust of the pin 9 to be discharged, and the pin 9 passes through the first punching hole 72 of the N-type workpiece 7 and the second punching hole 82 of the shell workpiece 8 in turn. Then, the punching rod 62 punches the two ends of the pin 9, so that the two ends of the pin 9 form a punching rivet head 91, thereby firmly assembling the N-type workpiece 7 and the shell workpiece 8 together, completing the key assembly steps of the automobile hinge.

[0039] Mold reset stage: After the stamping and assembly are completed, the main hydraulic mechanism drives the transmission sleeve 31 to move upward, and the transmission rod 32 rises accordingly. Under the action of the reset spring 212, the die column 14 and the die core 13 reset upward and return to the initial position along the slide column 211. In this process, the design of the material withdrawal opening groove 1331 makes it possible for the stamping rivet head 91 of the pin column 9 fixed in the punching groove 501 to not block the upward movement of the die core 13, thereby avoiding the reset interference phenomenon. At the same time, the movable mold seat 11 also moves upward under the action of the reset spring 212, and the inclined guide column 12 withdraws from the inclined sliding sleeve 52. The main slider block 51 and the flip slider block 53 reset horizontally under the action of the inclined guide column 12 and the inclined sliding sleeve 52, and the punching groove 501 is used to engage the pin column 9, and the N-type workpiece 7 and the shell workpiece 8 equipped with the pin column 9 are taken out of the mold and returned to the initial position. At this time, the automobile hinge that has been punched can be opened by rotating the flip slider 53 to remove the pin 9 from the punching slot 501, thereby completing a complete production cycle.

[0040] The present invention has a high degree of automation, reduces the number of manual operations, reduces the labor intensity and work risks of workers, and can simultaneously complete the forming of the N-type workpiece 7 and the shell workpiece 8 and the assembly of the pin 9 in one stamping process, integrating the traditional multi-step stamping and assembly processes into a continuous operation process. Compared with traditional molds, it reduces production time and process conversion times, avoids time waste caused by multiple positioning and adjustments, significantly improves the production efficiency of automobile hinges, and meets the needs of large-scale production in the automobile manufacturing industry.

[0041] Among them, the alignment block 221 on the punch core 22 cooperates with the alignment groove 141 on the die column 14 to ensure the accurate alignment of the N-type workpiece 7 and the shell workpiece 8 during the stamping process, avoiding the molding error caused by position deviation. The precise molding design of the right-angle bending portion of the N-type workpiece 7 by the slide mechanism 5 and the precise control of the edge bending of the shell workpiece 8 by the first arc portion 131 in the die core 13 enable the various components of the automobile hinge to obtain accurate shapes and sizes, greatly improve the consistency and stability of the product, effectively reduce the defective rate, and meet the strict requirements of the automobile manufacturing industry for high-precision parts.

[0042] The integrated punching assembly mechanism 6 realizes the precise assembly of the pin 9. Since the N-type workpiece 7 and the shell workpiece 8 are punched synchronously, the concentricity of the assembly is maintained, and the punching and pin assembly are completed synchronously during the punching process, avoiding the problem of inaccurate assembly caused by human factors and environmental factors in the traditional assembly method. The punching rod 62 punches the two ends of the pin 9 to form a firm punching rivet head 91, ensuring the connection strength and stability between the pin and the workpiece, and improving the overall assembly quality and reliability of the automobile hinge, which is of great significance to the safety performance and long-term stability of the automobile and is suitable for promotion and application.

[0043] The above is only the best implementation method adopted by this application in combination with current actual needs, but the protection scope of this application is not limited to this.

Claims

1. A stamping die rapid prototyping device, comprising a movable die set (1) and a fixed die set (2), for simultaneously stamping and forming an N-shaped workpiece (7) and a shell workpiece (8), and assembling a pin (9) between the N-shaped workpiece (7) and the shell workpiece (8), characterized in that: The movable die assembly (1) comprises a movable die seat (11), a die core (13) is fixed at the bottom of the movable die seat (11), a die column (14) is slidably connected to the die core (13) in a vertical direction, and a vertical slide groove (132) matching with and penetrating the die column (14) is provided on the die core (13); The fixed die assembly (2) comprises a fixed die seat (21), a male die core (22) is fixed on the top of the fixed die seat (21), one side of the fixed die seat (21) is slidably connected to a sliding mechanism (5) in a horizontal direction, one side of the male die core (22) is provided with a side cavity (222) matching the sliding mechanism (5), the sliding mechanism (5) and the side cavity (222) are matched to form a stamping cavity matching the N-type workpiece (7), the male die core (22) and the female die core (13) are matched to form a stamping cavity matching the shell workpiece (8), and a first arc portion (131) is provided in the female die core (13) for driving the edge of the flat shell workpiece (8) to bend; Punching assembly mechanisms (6) for forming a first punching hole (72) on the N-shaped workpiece (7) and a second punching hole (82) on the shell workpiece (8) are symmetrically provided on both sides of the fixed die seat (21); A material storage guide groove (4) for storing the pin (9) is provided on the top of the punching assembly mechanism (6) on one side; The top of the movable die assembly (1) is provided with a transmission mechanism (3) for driving the die column (14) and the die core (13) to move downward in steps.

2. A stamping die rapid prototyping device according to claim 1, characterized in that: The N-shaped workpiece (7) and the shell workpiece (8) are both plate-shaped structures before stamping; the N-shaped workpiece (7) is provided with a first assembly hole (71), and the shell workpiece (8) is provided with a second assembly hole (81); The top of the male die core (22) is provided with an alignment block (221) corresponding to the second assembly hole (81), and the bottom of the female die column (14) is provided with an alignment groove (141) corresponding to the alignment block (221).

3. A stamping die rapid prototyping device according to claim 1, characterized in that: The slide mechanism (5) comprises a main slide block (51), a side slide groove (223) is provided on one side of the punch core (22), the main slide block (51) is slidably connected to one side of the punch core (22) via a slide rail matching the side slide groove (223), the top of the main slide block (51) is rotatably connected to a flip slide block (53), a torsion spring is sleeved on the rotating shaft of the flip slide block (53), and the torsion spring has an elastic force to drive the flip slide block (53) to flip close to the inclined sleeve (52); Two right-angled bends are provided on both sides of the N-shaped workpiece (7), and the main positioning block (51) and the flip positioning block (53) are provided with a second arc portion (502) and a third arc portion (503) corresponding to the right-angled bends after being aligned.

4. A stamping die rapid prototyping device according to claim 3, characterized in that: An inclined sliding sleeve (52) is also fixed to the side of the main sliding block (51) away from the flip sliding block (53), and an inclined guide column (12) matching the inclined sliding sleeve (52) is fixed to one side of the movable mold base (11).

5. A stamping die rapid prototyping device according to claim 1, characterized in that: A plurality of upper sliding sleeves (111) are provided on the movable die seat (11), a sliding column (211) matching the upper sliding sleeves (111) is fixed on the fixed die seat (21), and a return spring (212) is sleeved on the sliding column (211), wherein the return spring (212) has an elastic force for driving the movable die seat (11) away from the fixed die seat (21).

6. A stamping die rapid prototyping device according to claim 1, characterized in that: The transmission mechanism (3) comprises a transmission sleeve (31), the top of the transmission sleeve (31) is fixedly connected to the output end of the main hydraulic mechanism, a transmission rod (32) is slidably connected in the vertical direction inside the transmission sleeve (31), a tensioning spring (33) is clamped between the transmission rod (32) and the transmission sleeve (31), and the tensioning spring (33) has an elastic force that drives the transmission rod (32) to move downward and contact the top of the die column (14).

7. A stamping die rapid prototyping device according to claim 3, characterized in that: The flip slider block (53) is provided with a punching slot (501) on one side opposite to the main slider block (51), and two groups of side holes (133) are symmetrically provided on both sides of the die core (13); The punching assembly mechanism (6) comprises a guide sleeve (61) fixed on the top of the fixed die seat (21), a punching rod (62) is slidably connected in the guide sleeve (61), and the ends of the two groups of punching rods (62) that are far away from each other are fixedly connected to the output end of the auxiliary hydraulic mechanism, a plurality of pins (9) are evenly spaced in the material storage guide groove (4), and a feed groove (611) is provided on the top of the guide sleeve (61) and is connected to the bottom of the material storage guide groove (4); A proximity sensor (201) for controlling the opening and closing of the punching assembly mechanism (6) is also fixed on one side of the top of the fixed die seat (21).

8. A stamping die rapid prototyping device according to claim 7, characterized in that: When the female die core (13) moves downward to mate with the male die core (22), the side hole (133) and the punching rod (62) are coaxially arranged; when the sliding mechanism (5) moves horizontally to mate with the side cavity (222) of the male die core (22), the punching groove (501) and the punching rod (62) are coaxially arranged.

9. A stamping die rapid prototyping device according to claim 8, characterized in that: A material return opening groove (1331) is provided on one side opposite to the side hole (133), and a groove depth of the material return opening groove (1331) is greater than twice the plate thickness of the N-shaped workpiece (7) or the shell workpiece (8).

10. A stamping die rapid prototyping device according to claim 9, characterized in that: The diameters of the pin (9), the punching rod (62) and the side hole (133) are all equal to the diameter of the punching slot (501), and the diameter of the material withdrawal opening slot (1331) is greater than the diameter of the punching slot (501); Both ends of the pin (9) are punched by the punching rod (62) to form punching rivet heads (91), and the diameter of the punching rivet heads (91) is smaller than the diameter of the material withdrawal opening groove (1331).

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