A die flanging device

Abstract

The application discloses a die flanging device, which comprises a movable die, a fixed die, a fixed cover arranged on the top of the fixed die, a positioning column, a pressing plate, a connecting plate, a limiting mechanism and a transmission mechanism.

Description

Technical Field

[0001] This invention relates to the field of mold processing technology, specifically a mold flanging device. Background Technology

[0002] Flanging is a processing method that bends or rolls the edge of a workpiece. Die flanging devices are widely used in many industries and applications. They can be used in industries and applications that require bending or rolling of metal or other materials.

[0003] Chinese Patent Publication No. CN219851567U discloses a mold flanging device, which includes a lower mold and an upper mold. Multiple connecting rods slide inside the upper mold, and the two ends of the multiple connecting rods pass through the upper mold. The bottom ends of two longitudinal connecting rods are welded together with a pressure plate for pressing the surface of the workpiece.

[0004] The aforementioned device, through the cooperation of two pressure plates and springs, ensures that when the upper die presses down on the workpiece, the pressure plates first contact the workpiece, and the two pressure plates firmly press the workpiece down through the springs. However, in actual use, since the pressure plates only target the two sides of the workpiece, the workpiece between the pressure plates may warp during stamping, resulting in uneven upper ends and affecting the quality of the workpiece's flanging and bending. Furthermore, when the upper and lower dies just come together to form the flanging and bending of the workpiece, a relatively large pressure is required. However, through the cooperation of the pressure plates and springs, the pressure of the pressure plates on the workpiece is only maximized when the upper and lower dies are fully engaged. Therefore, when the upper and lower dies just come together, the workpiece may easily slip or even fall due to its own rigidity and the relatively small pressure of the pressure plates.

[0005] Therefore, it is necessary to provide a mold flanging device to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a mold flanging device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a mold flanging device, comprising a moving mold and a fixed mold, wherein the moving mold is disposed above the fixed mold; a positioning post is fixedly disposed at the bottom of the moving mold, and a fixed cover is installed at the top of the fixed mold; the bottom of the positioning post slides through the fixed cover and extends into the side wall of the fixed mold; a pressure plate is slidably disposed on one side of the fixed cover; connecting plates are fixedly disposed at both ends of the pressure plate; the end of the connecting plate away from the pressure plate slides into the side wall of the fixed mold, and the connecting plate is elastically connected to the inner wall of the fixed mold; a limit mechanism is provided at the end of the connecting plate away from the pressure plate; and a transmission mechanism is provided between the pressure plate and the fixed mold.

[0008] When the transmission mechanism moves toward the fixed cover, the drive limit mechanism moves toward the fixed cover, and then the connecting plate drives the pressing plate to move toward the fixed mold.

[0009] As a further aspect of the present invention: the transmission mechanism includes a square plate; the square plate is slidably disposed at one end of the fixed cover near the pressing plate, and the square plate is disposed below the pressing plate. A groove is provided at the bottom center of the square plate. A short plate is slidably connected to one end of the groove near the fixed cover. The end of the short plate away from the groove is connected to a limiting mechanism, and the end of the short plate away from the groove is slidably attached to the inner wall of the fixed mold. When the square plate moves toward the fixed cover, the limiting mechanism is driven to move toward the fixed cover through the cooperation of the groove and the short plate.

[0010] As a further aspect of the present invention: a support strip is slidably provided at the bottom of the square plate, and multiple sets of support strips are arrayed at the top of the fixed mold. The top of the fixed mold is provided with support grooves that correspond to and slide with the multiple sets of support strips one by one. The bottom of the support strip is symmetrically provided with a matching groove that slides with the limiting mechanism. When the limiting mechanism moves toward the fixed cover, the support strip moves downward and separates from the bottom of the square plate. When the limiting mechanism moves away from the fixed cover, the support strip moves upward and slides against the bottom of the square plate.

[0011] As a further embodiment of the present invention: the limiting mechanism includes a movable plate; an L-plate is fixedly connected to one end of the movable plate near the short plate, the end of the L-plate away from the movable plate is slidably fitted to the bottom of the support groove, and a top block that slidably engages with the mating groove is fixedly connected to the top of the L-plate, and a limiting groove for sliding of the movable plate and the L-plate is provided on the side wall of the fixed mold.

[0012] As a further aspect of the present invention: the top of the fixed mold is provided with a positioning groove for sliding of the connecting plate, and the two ends of the movable plate are fixedly connected with second limiting rods. The second limiting rods are located on the side of the movable plate near the connecting plate, and the second limiting rods are slidably embedded in the inner wall of the fixed mold. The end of the second limiting rod away from the movable plate slides into the positioning groove. The end of the connecting plate away from the pressing plate is provided with a limiting hole, and the limiting hole slides in cooperation with the second limiting rod.

[0013] As a further aspect of the present invention: a partition is provided below the end of the connecting plate away from the pressing plate, and springs are fixedly provided between the partition and the connecting plate, and between the partition and the bottom of the positioning groove, and the partition slides against the inner wall of the positioning groove.

[0014] As a further aspect of the present invention: a first limiting rod is provided below the second limiting rod, the first limiting rod is elastically slidably disposed in the side wall of the fixed mold, and the end of the first limiting rod near the connecting plate slides into the positioning groove, and the end of the first limiting rod near the connecting plate slides into the limiting hole.

[0015] As a further aspect of the present invention: a resistance block is slidably disposed in the inner wall of the fixed mold, the resistance block is disposed below the positioning post, and a resistance groove is disposed at the bottom of the positioning post to slide and adapt to the resistance block.

[0016] As a further aspect of the present invention: a transmission groove is symmetrically arranged on the top of the fixed mold along the center, a winding shaft is rotatably connected in the transmission groove, a gear is fixedly arranged on the periphery of one end of the winding shaft, a third pull rope is wound around the end of the winding shaft away from the gear, and the end of the third pull rope away from the winding shaft slides through the side wall of the fixed mold and is fixedly connected to the bottom of the partition plate. The bottom of the square plate is symmetrically arranged with toothed grooves that cooperate with the gear transmission along the center.

[0017] As a further aspect of the present invention: trigger plates are fixedly connected to both sides of the square plate near the positioning post; an air groove is provided on the top of the fixed mold, and the air groove is located at the end of the trigger plate away from the square plate; a piston plate is elastically connected to the end of the air groove away from the trigger plate; a limit block is elastically connected to the side wall of the end of the air groove away from the trigger plate, and the limit block is symmetrically arranged along the center of the air groove; the end of the limit block near the air groove is slidably engaged with the side of the piston plate near the trigger plate, and the side of the limit block near the trigger plate is also slidably attached to the end of the trigger plate; a first pull rope is fixedly connected to the side of the piston plate away from the trigger plate, and the first pull rope passes around the piston plate and is fixedly connected to the end of the trigger plate; an air hole communicating with the air groove is provided in the side wall of the fixed mold, and the opening of the air hole away from the air groove is located between two adjacent sets of support bars.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the cooperation of the clamping plate, connecting plate, square plate, movable plate, second limiting rod, and first limiting rod, in use, one end of the workpiece is inserted into the square plate, pushing the square plate towards the fixed cover. This causes the sliding groove and short plate to cooperate in moving the L-plate and movable plate. The movement of the square plate, through the cooperation of the tooth groove and gear, causes the partition to move downward. Subsequently, when the second limiting rod separates from the limiting hole, the connecting plate and clamping plate move downward to complete the clamping and fixing of the workpiece. Then, the first limiting rod will cooperate with the limiting hole to move the connecting plate. The limit switch ensures that the clamping plate maintains a stable clamping and fixing of the workpiece, avoiding the possibility that the workpiece may warp between the pressure plates during stamping if the workpiece is pressed down by the spring alone. This would result in uneven upper parts of the workpiece, affecting the quality of the workpiece flanging and bending. At the same time, through the cooperation of the piston plate and the air groove, after the square plate moves towards the fixed cover, the piston plate moves towards the air hole through the cooperation of the trigger plate and the limit block, expelling the gas in the air groove from the air hole, thus cleaning the fixed mold between the support bars and preventing the presence of impurities from the previous processing or those that have just fallen on it. Attached Figure Description

[0019] Figure 1 This is a frontal three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the clamping plate in this invention.

[0021] Figure 3 This is a schematic diagram of the cross-section of the middle part of the fixed mold in this invention.

[0022] Figure 4 This is a schematic diagram of the piston plate in this invention.

[0023] Figure 5 In this invention Figure 4 A schematic diagram of the structure at point A in the middle.

[0024] Figure 6 In this invention Figure 4 A schematic diagram of the structure at point B.

[0025] Figure 7 This is a schematic diagram of the support strip in this invention.

[0026] Figure 8 In this invention Figure 7 A schematic diagram of the structure at point C.

[0027] Figure 9 This is a schematic diagram of the structure of the first limiting rod and the second limiting rod in this invention.

[0028] Figure 10 This is a schematic diagram of the gear structure in this invention.

[0029] Figure 11 This is a schematic diagram of the tooth groove structure in this invention.

[0030] In the diagram: 1. Moving mold; 101. Positioning pin; 2. Fixed mold; 201. Fixed cover; 202. Air groove; 3. Pressing plate; 301. Connecting plate; 4. Support bar; 401. Support groove; 402. Mating groove; 5. Square plate; 501. Slide groove; 6. Top block; 7. L-plate; 8. Short plate; 9. Trigger plate; 10. First pull rope; 11. Piston plate; 12. Limiting block; 13. Air hole; 14. Gear; 141. Transmission groove; 15. Movable plate; 16. Resistance groove; 17. Resistance block; 18. Second pull rope; 19. First limiting rod; 20. Second limiting rod; 21. Partition plate; 22. Third pull rope; 23. Gear groove. Detailed Implementation

[0031] Please see Figures 1-11 In this embodiment of the invention, a mold flanging device includes a moving mold 1 and a fixed mold 2. The moving mold 1 is disposed above the fixed mold 2. A positioning post 101 is fixedly disposed at the bottom of the moving mold 1. A fixed cover 201 is installed on the top of the fixed mold 2. The bottom of the positioning post 101 slides through the fixed cover 201 and extends into the side wall of the fixed mold 2. A pressure plate 3 is slidably disposed on one side of the fixed cover 201. A connecting plate 301 is fixedly disposed at both ends of the pressure plate 3. The end of the connecting plate 301 away from the pressure plate 3 slides into the side wall of the fixed mold 2, and the bottom of the connecting plate 301 is elastically connected to the inner wall of the fixed mold 2. A limit mechanism is provided at the end of the connecting plate 301 away from the pressure plate 3. A transmission mechanism is provided between the pressure plate 3 and the fixed mold 2.

[0032] In use, initially, the moving mold 1 and the fixed mold 2 are separated, the clamping plate 3 is away from the top of the fixed mold 2, and the transmission mechanism is below the clamping plate 3. When it is necessary to bend the workpiece, insert one end of the workpiece into the transmission mechanism below the clamping plate 3. Then, when the transmission mechanism is pushed by the workpiece to move towards the fixed cover 201, the transmission mechanism drives the limiting mechanism to move towards the fixed cover 201. Then, the clamping plate 3 moves downward towards the fixed mold 2 to fix the workpiece, so that one end of the workpiece is completely fixed. This avoids the problem of the workpiece warping in the middle due to the lack of limiting when the moving mold 1 and the fixed mold 2 are closed after simply fixing both ends, which may cause the workpiece to shift. After the workpiece is fixed, the moving mold 1 is started to move towards the fixed mold 2 to perform the bending operation.

[0033] Please see Figures 1-4 , Figure 6 , Figure 8 , Figure 11Preferably, the transmission mechanism includes a square plate 5; the square plate 5 is slidably disposed at one end of the fixed cover 201 near the pressing plate 3 by means of a spring or elastic column, and the square plate 5 is disposed below the pressing plate 3. When a workpiece is inserted, the end of the workpiece aligns with the end of the square plate 5 and is pushed under the pressing plate 3. At this time, the square plate 5 is pushed into the fixed cover 201 by the workpiece. A groove 501 is provided at the center of the bottom of the square plate 5. A short plate 8 is slidably connected to one end of the groove 501 near the fixed cover 201. Initially, when the end of the square plate 5 away from the fixed cover 201 is close to the end of the pressing plate 3 away from the fixed cover 201, the short plate 8 is located at the end of the groove 501 near the fixed cover 201. When the square plate 5 moves into the fixed cover 201, the end of the groove 501 away from the fixed cover 201 will fit against the short plate 8. Subsequently, when the square plate 5 is completely retracted into the fixed cover 201... When the square plate 5 moves towards the fixed cover 201 via the slide groove 501, the end of the short plate 8 away from the slide groove 501 is connected to the limiting mechanism. Initially, the limiting mechanism limits the connecting plate 301, thereby ensuring that the pressing plate 3 is in an initial stable state. When the short plate 8 moves, it will drive the limiting mechanism to move towards the fixed cover 201, causing the limiting mechanism to move away from the connecting plate 301, thus releasing the limiting of the connecting plate 301. Subsequently, the pressing plate 3 moves downward under the action of the connecting plate 301 to complete the pressing and fixing of the workpiece. After the connecting plate 301 moves downward, it will be limited again by the limiting mechanism, thereby ensuring the stability of the workpiece being pressed and fixed. The end of the short plate 8 away from the slide groove 501 slides and fits against the inner wall of the fixed mold 2. When the square plate 5 moves towards the fixed cover 201, the limiting mechanism is driven to move towards the fixed cover 201 through the cooperation of the slide groove 501 and the short plate 8.

[0034] Please see Figure 2 , Figure 3 , Figure 7 , Figure 9Preferably, a support strip 4 is slidably provided on the bottom of the square plate 5. Initially, the support strip 4 protrudes from the top of the fixed mold 2 and fits against the bottom of the square plate 5, thereby providing support for the workpiece when it is inserted. This reduces friction between the bottom of the workpiece and the top of the fixed mold 2, thus preventing impurities that may be present at the bottom of the workpiece from accumulating on the top of the fixed mold 2 after friction. Furthermore, multiple sets of support strips 4 are arrayed on the top of the fixed mold 2, and the top of the fixed mold 2 is provided with sliding adaptations corresponding to each set of support strips 4. The support groove 401 and the bottom of the support bar 4 are symmetrically provided with a matching groove 402 that slides with the limiting mechanism. When the limiting mechanism moves toward the fixed cover 201, the support bar 4 moves downward and separates from the bottom of the square plate 5 and retracts into the support groove 401. When the limiting mechanism moves away from the fixed cover 201, the support bar 4 moves upward and protrudes out of the support groove 401 and slides against the bottom of the square plate 5, so that the support bar 4 has the function of automatic extension and retraction, thereby avoiding affecting the subsequent work such as flanging of the workpiece.

[0035] Please see Figure 3 , Figure 7 , Figure 8 , Figure 9 Preferably, the limiting mechanism includes a movable plate 15; an L-plate 7 is fixedly connected to one end of the movable plate 15 near the short plate 8, and the end of the L-plate 7 away from the movable plate 15 slides against the bottom of the support groove 401. A top block 6 is fixedly connected to the top of the L-plate 7 and slides against the mating groove 402. The top block 6 has an inclined surface facing the support bar 4. The support bar 4 and the support groove 401 are elastically connected by a spring column. When the L-plate 7 moves toward the fixed cover 201, the support bar 4 moves downward under the action of the spring column, so that the top block 6 engages with the mating groove 402. When the L-plate 7 moves away from the fixed cover 201, the engagement of the inclined surface on the top block 6 with the mating groove 402 pushes the support bar 4 upward. The side wall of the fixed mold 2 is provided with a limiting groove for the sliding of the movable plate 15 and the L-plate 7.

[0036] Preferably, the top of the fixed mold 2 is provided with a positioning groove for the sliding of the connecting plate 301. The two ends of the movable plate 15 are fixedly connected with second limiting rods 20. The second limiting rods 20 are located on the side of the movable plate 15 near the connecting plate 301, and are slidably embedded in the inner wall of the fixed mold 2. The end of the second limiting rod 20 away from the movable plate 15 slides into the positioning groove. The end of the connecting plate 301 away from the pressing plate 3 is provided with a limiting hole, which slides with the second limiting rod 20. The second limiting rod 20 is provided below the first limiting rod 19. The two sides of the first limiting rod 19 are elastically slidably disposed within the side wall of the fixed mold 2 via springs. The end of the first limiting rod 19 near the connecting plate 301 slides into the positioning groove, and the end of the first limiting rod 19 extending into the positioning groove is provided with an inclined surface facing the pressing plate 3. The end of the first limiting rod 19 near the connecting plate 301 slides into the limiting hole. In use, in the initial state, the second limiting rod 20 and the first limiting rod 19... All 9 extend into the positioning groove, and the end of the second limiting rod 20 away from the movable plate 15 extends into the limiting hole to restrict the relative position of the connecting plate 301. This ensures that when the workpiece is inserted, the clamping plate 3 will move downwards and tightly adhere to the workpiece after being subjected to force, which would make it difficult for the workpiece to move. When the workpiece is inserted and pushes the square plate 5 to move, the square plate 5, through the cooperation of the support groove 401 and the short plate 8 and L plate 7, causes the movable plate 15 to move towards the fixed cover 201. The movement of the movable plate 15 causes the second limiting rod 20 and L plate 7 to move, allowing the support bar 4 and the clamping plate 3 to descend synchronously, so that the support bar 4 retracts into the support groove 401. The second limiting rod 20 moves and separates from the limiting hole. Then the clamping plate 3 moves downwards to press and fix the workpiece, while the connecting plate 301 moves downwards and slides with the end of the first limiting rod 19. Then it continues to move so that the limiting hole and the end of the first limiting rod 19 cooperate, so that the connecting plate 301 is limited again, thereby ensuring the stability of the clamping plate 3.

[0037] Please see Figure 9 Preferably, a partition 21 is provided below the end of the connecting plate 301 away from the pressing plate 3, and springs are fixedly provided between the partition 21 and the connecting plate 301, and between the partition 21 and the bottom of the positioning groove, and the partition 21 slides against the inner wall of the positioning groove.

[0038] Please see Figures 3-4 , Figure 6 , Figures 9-10Preferably, the top of the fixed mold 2 is symmetrically provided with a transmission groove 141 along the center. A winding shaft is rotatably connected in the transmission groove 141. A gear 14 is fixedly provided on the periphery of one end of the winding shaft. A third pull rope 22 is wound around the end of the winding shaft away from the gear 14. The end of the third pull rope 22 away from the winding shaft slides through the side wall of the fixed mold 2 and is fixedly connected to the bottom of the partition plate 21. When the winding shaft rotates, the third pull rope 22 is wound. The bottom of the square plate 5 is symmetrically provided with toothed grooves 23 that cooperate with the gear 14 in transmission. A resistance block 17 is slidably provided in the inner wall of the fixed mold 2. The top of the resistance block 17 is provided with an annular protrusion, and the protrusion... The resistance block 17 is made of silicone and is located below the positioning post 101. The bottom of the positioning post 101 is provided with a resistance groove 16 that slides and adapts to the resistance block 17. When the positioning post 101 moves downward, the resistance groove 16 will slide and engage with the resistance block 17, allowing the protrusion to extend into the resistance groove 16. The top of both the resistance groove 16 and the resistance block 17 is provided with annular grooves. When the positioning post 101 moves upward, it will drive the resistance block 17 to move upward. When the resistance block 17 moves to the limit position, as the positioning post 101 continues to move, the protrusion on the top of the resistance block 17 will deform and separate from the resistance groove 16.

[0039] In practical use, in the initial state, the springs on both the upper and lower sides of the partition 21 are in normal condition. The second limiting rod 20 extends into the limiting hole to limit the connecting plate 301, and one end of the first limiting rod 19 extends into the positioning groove. When the workpiece is inserted between the clamping plate 3 and the fixed mold 2, the square plate 5 moves towards the fixed cover 201, thereby causing the toothed groove 23 and the gear 14 to mesh and drive. At this time, the gear 14 rotates, driving the winding shaft to rotate and forming a winding of the third pull rope 22, causing the partition 21 to move downward and compressing the spring below the partition 21. The spring above it is stretched. When the square plate 5 moves completely into the fixed cover 201, the sliding groove 501 and the short plate 8 work together to push the L plate 7 and the movable plate 15 to move synchronously. This causes the top block 6 to engage with the mating groove 402, allowing the support bar 4 to move and retract into the support groove 401. At the same time, the second limiting rod 20 separates from the limiting hole. At this time, the connecting plate 301 moves downward under the action of the spring above the partition plate 21 and slides against the first limiting rod 19. Then, the first limiting rod 19 extends into the limiting hole to limit it, thereby... After the workpiece is fixed in place, the moving mold 1 can move towards the fixed mold 2 to close and complete the flanging process. This causes the positioning pin 101 to move downwards, allowing the resistance groove 16 to engage with the resistance block 17. After the flanging is completed, the moving mold 1 and the fixed mold 2 separate, and the positioning pin 101 moves away from the fixed mold 2. This causes the resistance block 17 to move upwards. The upward movement of the resistance block 17 pulls the first limiting rod 19 away from the limiting hole via the second pull rope 18. Then, the connecting plate 301 moves upwards and resets under the action of the spring. Subsequently, the square plate 5... Under the corresponding elastic action, the square plate 5 moves and resets. At this time, the tooth groove 23 drives the gear 14 to move and reset. The gear 14 moves and resets, which spreads the third pull rope 22, thereby causing the partition 21 to move and reset. The square plate 5 also drives the short plate 8 to move and reset through the slide groove 501, thereby causing the movable plate 15, L plate 7, and second limit rod 20 to move and reset, thus facilitating the next use. When the resistance block 17 moves to the limit position, it will separate from the resistance groove 16, and then the first limit rod 19 and resistance block 17 move and reset.

[0040] Please see Figures 3-5 , Figures 7-8Preferably, trigger plates 9 are fixedly connected to both sides of the square plate 5 near the positioning post 101. An air groove 202 is provided on the top of the fixed mold 2, and the air groove 202 is located at the end of the trigger plate 9 away from the square plate 5. A piston plate 11 is elastically connected to the end of the air groove 202 away from the trigger plate 9 via a spring. In the initial state where the square plate 5 extends out of the fixed cover 201, the piston plate 11 is located at the end of the air groove 202 away from the trigger plate 9. When the square plate 5 moves and retracts into the fixed cover 201, the piston plate 11 can move towards the square plate 5 under the action of the spring, thereby compressing the gas in the air groove 202 and discharging it to the outside, thus moving the air groove 202 away from the trigger plate 9. One end of the sidewall is elastically connected to a limiting block 12 via a spring, and the limiting block 12 is symmetrically arranged along the center of the air groove 202. The end of the limiting block 12 near the air groove 202 is slidably engaged with the side of the piston plate 11 near the trigger plate 9. Initially, the limiting block 12 protrudes from the sidewall of the fixed mold 2 to limit the side of the piston plate 11 near the square plate 5, and the side of the limiting block 12 near the trigger plate 9 is also slidably engaged with the end of the trigger plate 9. The end of the limiting block 12 near the trigger plate 9 is provided with a slope, so that the trigger plate 9 can press the limiting block 12 into the sidewall of the fixed mold 2 and separate it from the piston plate 11 by the slope, thus releasing the limitation on the piston plate 11. At the same time, in the active... When the piston plate 11 moves and resets, it will not get stuck with the limiting block 12, thus being limited there. A first pull rope 10 is fixedly connected to the side of the piston plate 11 away from the trigger plate 9. The first pull rope 10 passes around the piston plate 11 and is fixedly connected to the end of the trigger plate 9. A fixing post is provided at the corner of the air groove 202 near the limiting block 12. The first pull rope 10 passes around the fixing post and is fixedly connected to the trigger plate 9. In this way, when the trigger plate 9 moves away from the fixing cover 201, the piston plate 11 can be moved and reset by the first pull rope 10. When the trigger plate 9 moves towards the piston plate 11, the first pull rope 10 provides a channel for the piston plate 11 to move towards the square plate 5. The piston plate 11 is automatically reset. The side wall of the fixed mold 2 is provided with an array of air holes 13 that communicate with the air groove 202. When the piston plate 11 moves to the square plate 5, the gas between the piston plate 11 and the air groove 202 is ejected through the air holes 13. The end of the air hole 13 away from the air groove 202 is located between two adjacent sets of support bars 4. The ejected gas cleans the space between the two sets of support bars 4, so that the surface of the fixed mold 2 is kept clean when the workpiece is turned over. This prevents impurities on the workpiece from falling on the fixed mold 2 at the position corresponding to the clamping plate 3 when the workpiece is placed or turned over, and then accumulating, affecting the processing quality of the workpiece.

Claims

1. A mold flanging device, comprising a moving mold and a fixed mold, wherein the moving mold is disposed above the fixed mold; characterized in that, A positioning post is fixedly installed at the bottom of the moving mold, and a fixed cover is installed at the top of the fixed mold. The bottom of the positioning post slides through the fixed cover and extends into the side wall of the fixed mold. A clamping plate is slidably installed on one side of the fixed cover, and connecting plates are fixedly installed at both ends of the clamping plate. The end of the connecting plate away from the clamping plate slides into the side wall of the fixed mold, and the connecting plate is elastically connected to the inner wall of the fixed mold. A limit mechanism is provided at the end of the connecting plate away from the clamping plate. A transmission mechanism is provided between the clamping plate and the fixed mold. When the transmission mechanism moves toward the fixed cover, it drives the limit mechanism to move toward the fixed cover, and then the connecting plate drives the clamping plate to move toward the fixed mold. The transmission mechanism includes a square plate; the square plate is slidably disposed at one end of the fixed cover near the pressure plate, and the square plate is disposed below the pressure plate. A groove is provided at the bottom center of the square plate. A short plate is slidably connected to one end of the groove near the fixed cover. The end of the short plate away from the groove is connected to a limiting mechanism, and the end of the short plate away from the groove slides against the inner wall of the fixed mold. When the square plate moves toward the fixed cover, the limiting mechanism is driven to move toward the fixed cover through the cooperation of the groove and the short plate. The bottom of the square plate is slidably provided with support bars, and multiple sets of support bars are arrayed on the top of the fixed mold. The top of the fixed mold is provided with support grooves that slide and adapt to each set of support bars. The bottom of the support bars is symmetrically provided with matching grooves that slide and engage with the limiting mechanism. When the limiting mechanism moves toward the fixed cover, the support bars move downward and separate from the bottom of the square plate. When the limiting mechanism moves away from the fixed cover, the support bars move upward and slide and fit against the bottom of the square plate. The square plate is fixedly connected to trigger plates on both sides of one end near the positioning post. The top of the fixed mold is provided with an air groove, which is located at the end of the trigger plate away from the square plate. A piston plate is elastically connected to the end of the air groove away from the trigger plate. A first pull rope is fixedly connected to the side of the piston plate away from the trigger plate. The first pull rope passes around the piston plate and is fixedly connected to the end of the trigger plate. An air hole communicating with the air groove is provided in the side wall of the fixed mold, and the opening of the air hole away from the air groove is located between two adjacent sets of support bars.

2. The mold flanging device according to claim 1, characterized in that, The limiting mechanism includes a movable plate; an L-plate is fixedly connected to one end of the movable plate near the short plate, and the end of the L-plate away from the movable plate slides against the bottom of the support groove. A top block that slides with the mating groove is fixedly connected to the top of the L-plate, and a limiting groove for sliding between the movable plate and the L-plate is provided on the side wall of the fixed mold.

3. The mold flanging device according to claim 2, characterized in that, The top of the fixed mold is provided with a positioning groove for the sliding of the connecting plate. The two ends of the movable plate are fixedly connected with second limiting rods. The second limiting rods are located on the side of the movable plate near the connecting plate. The second limiting rods are slidably embedded in the inner wall of the fixed mold, and the end of the second limiting rod away from the movable plate slides into the positioning groove. The end of the connecting plate away from the pressing plate is provided with a limiting hole, and the limiting hole slides with the second limiting rod.

4. The mold flanging device according to claim 3, characterized in that, A partition is provided below the end of the connecting plate away from the pressing plate, and springs are fixedly provided between the partition and the connecting plate, and between the partition and the bottom of the positioning groove. The partition slides against the inner wall of the positioning groove.

5. A mold flanging device according to claim 3, characterized in that, A first limiting rod is provided below the second limiting rod. The first limiting rod is elastically slidably disposed in the side wall of the fixed mold, and the end of the first limiting rod near the connecting plate slides into the positioning groove. The end of the first limiting rod near the connecting plate slides into the limiting hole.

6. A mold flanging device according to claim 5, characterized in that, A resistance block is slidably disposed in the inner wall of the fixed mold. The resistance block is disposed below the positioning post. The bottom of the positioning post is provided with a resistance groove that is adapted to slide with the resistance block. When the moving mold moves toward the fixed mold to perform flanging processing on the workpiece, the positioning post moves downward to allow the resistance groove to cooperate with the resistance block. After the flanging work is completed, the moving mold and the fixed mold move apart. The positioning post moves away from the fixed mold and drives the resistance block to move upward. When the resistance block moves upward, it pulls the first limit rod away from the limit hole.

7. A mold flanging device according to claim 6, characterized in that, The top of the fixed mold is symmetrically provided with a transmission groove along the center. A winding shaft is rotatably connected in the transmission groove. A gear is fixedly provided on the periphery of one end of the winding shaft. A third pull rope is wound around the end of the winding shaft away from the gear. The end of the third pull rope away from the winding shaft slides through the side wall of the fixed mold and is fixedly connected to the bottom of the partition. The bottom of the square plate is symmetrically provided with toothed grooves that cooperate with the gear transmission. When the workpiece is inserted between the clamping plate and the fixed mold, the square plate moves towards the fixed cover so that the toothed grooves and the gear mesh and transmit power. The rotation of the gear drives the winding shaft to rotate, forming the winding of the third pull rope, causing the partition to move downward. After the flanging work is completed, the square plate moves back to its original position under the corresponding elastic action and drives the gear to move back to its original position through the toothed groove. The gear moves back to its original position and unwinds the third pull rope, thereby causing the partition to move back to its original position.

8. A mold flanging device according to claim 1, characterized in that, The side wall of the air groove away from the trigger plate is elastically connected to a limiting block, and the limiting block is symmetrically arranged along the center of the air groove. The end of the limiting block near the air groove is slidably engaged with the side of the piston plate near the trigger plate. Initially, the limiting block protrudes from the side wall of the fixed mold to limit the side of the piston plate near the square plate. The side of the limiting block near the trigger plate is also slidably engaged with the end of the trigger plate. The end of the limiting block near the trigger plate is provided with an inclined surface. By engaging with the inclined surface, the limiting block is squeezed into the side wall of the fixed mold and separated from the piston plate, thus releasing the limitation on the piston plate.

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