Automatic progressive stamping die

Abstract

The invention relates to the related technical field of metal stamping, discloses an automatic progressive stamping die, and aims at solving the problem that the precision of a conveying mechanism is reduced due to the fact that the workpiece demolding process is complex. The two shaping female die bases are attached together through the composite push frame, so that stamping forming of a workpiece is achieved, after stamping is completed, the stamped workpiece can be horizontally conveyed to a next punching die through separation of the shaping female die bases, and in this way, on one hand, stamping forming of the cylindrical workpiece is achieved, and on the other hand, the stamping forming efficiency is improved. And the problem that the moving path of the conveying mechanism is too complex after the workpiece is formed can be solved, and the positioning accuracy of the follow-up punching die is further guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field related to metal stamping, and in particular to an automated progressive stamping die. Background Art

[0002] The progressive die is an efficient multi-station stamping die. Its structural feature is that it is composed of multiple closely connected stations arranged in sequence. Each station undertakes a specific processing task to ensure the continuity and efficiency of the entire stamping process. In a complete stroke of the punch press, the progressive die can complete a series of different stamping operations in sequence, such as punching, trimming, bending, drawing, etc. These operations are carried out in sequence at different stations of the die. After each stroke, the feed mechanism of the punch press will accurately push the material forward according to the preset fixed step distance to prepare for the processing of the next stroke. This design allows multiple processes that originally required multiple dies and multiple stampings to be completed on a single die, greatly improving production efficiency and processing accuracy.

[0003] However, in manufacturing such as Fig.10 When it comes to the heating tank of the water dispenser shown, although the application of progressive dies can bring many advantages, it also faces some challenges in actual operation. During the manufacturing process, the heating tank workpiece 22 first needs to be stretched into a cylindrical shape using a stamping die, and then cylindrical holes are opened on its sides and bottom. At present, it is common practice to transport the stretched workpiece 22 to the next station for punching through a feeding mechanism. But the problem is that the height of the stretched workpiece 22 increases, so that the conveying mechanism needs to perform a series of complex actions such as lifting and horizontal movement when taking the formed workpiece out of the die and feeding it into the punching die. These actions not only increase the difficulty of transportation, but may also lead to a decrease in transportation accuracy.

[0004] Specifically, since the conveying mechanism needs to undergo multiple action conversions during the conveying process, it is easy to produce slight deviations. These deviations will be further amplified in the subsequent punching process, resulting in a deviation in the positional relationship between the installation bottom hole 221 and the positioning hole 220. This deviation will eventually be reflected in the dimensional accuracy of the product, resulting in an increase in the defective rate. Summary of the invention

[0005] The present invention proposes an automated progressive stamping die, which has the advantage of a split stamping die design, and is used to solve the problem in the above background technology that the demoulding process of the workpiece is complicated and thus causes a decrease in the accuracy of the conveying mechanism.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an automated progressive stamping die, comprising: a lower die seat and an upper die seat, which are correspondingly installed to the upper / lower pad parts of the hydraulic press; a shaping die seat, wherein the two shaping die seats are movably installed on the surface of the lower die seat, and the shaping die seats can form an upwardly open cylindrical tube when they are relatively close to each other, and a disengagement push spring is connected between the two shaping die seats; a compound push frame, which is tightly connected to the upper die seat, and the compound push frame can close the opened shaping die seats together when it follows the upper die seat downward; a shaping punch seat, which is arranged on the upper die seat and inserted into the shaping die seat to realize stamping forming of the workpiece.

[0007] Furthermore, a cylindrical hole is provided at the bottom of the shaping die seat, and a cylindrical tube is correspondingly connected to the lower die seat.

[0008] Furthermore, a rectangular groove is provided in the middle of the composite push frame, and an oblique angle is provided at the end of the composite push frame.

[0009] Furthermore, a feeding rack lifted by a supporting slide is provided on the lower die seat, and a positioning plate for placing workpieces is fixed on the feeding rack; a feeding motor fixed by a motor frame is provided on one side of the feeding part of the lower die seat, and a feeding wheel fixed by an output shaft of the feeding motor is fitted between the feeding rack.

[0010] Furthermore, a punching base is fastened to the surface of the lower die base, and a bottom hole punch is fixed on the upper die base.

[0011] Furthermore, a transmission slide is movably installed on the surface of the lower die seat, a reset push spring is connected between the transmission slide and the lower die seat, and a wedge-shaped slider is fixedly installed at one end of the transmission slide, a side hole punch is installed on the wedge-shaped slider, a punching top seat is fastened to the upper die seat, and a compressive spring is arranged between the shaping punch seat and the upper die seat.

[0012] Furthermore, a reset push groove is provided on the side of the shaping punch seat.

[0013] Furthermore, a one-way air valve is fixedly installed on the top of the shaping punch seat, and the one-way air valve realizes one-way air delivery from the external airflow to the inner cavity of the shaping punch seat, and an exhaust hole is opened at the end of the shaping punch seat.

[0014] Furthermore, a pair of meshing gears are movably installed at the bottom of the punching base, the outer teeth of the gears are meshed with a tooth row, the tooth row is fastened to the end of the transmission slide, the outer side of the gears is fastened to a supporting guide arm, and a detection frame is movably installed on the supporting guide arm, a guide ring frame is fastened to the outer side of the punching base, a detection push block is movably installed at the end of the detection frame, a detection tension spring is arranged between the detection push block and the detection frame, and a stop switch is fixedly installed on the side of the detection push block.

[0015] Furthermore, both stop switches serve as input terminals of the PLC controller. When both stop switches are squeezed, the PLC controller processes the signal and outputs a signal to the feeding motor to delay its operation.

[0016] The present invention has the following beneficial effects:

[0017] The core feature of the automated progressive stamping die provided by the present invention is the clever design of a split-type shaping die seat. This design allows the two shaping die seats to be closely fitted together through the precise action of the composite pusher during the stamping and stretching process of the workpiece, and to act on the workpiece together, thereby achieving precise stamping and forming. Once the stamping operation is successfully completed, the two shaping die seats can be easily separated, creating conditions for the smooth removal of the workpiece.

[0018] In this die, the stamped workpiece can be directly transported in a horizontal position to the punching die of the next process. This process is due to the ingenious design of the shaping die seat, which avoids the problem of the conveying mechanism in the traditional die having to perform a complex moving path after the workpiece is formed. Since the workpiece can be conveyed in a horizontal state inside the die, it not only greatly simplifies the conveying process, but also significantly improves the stability and accuracy of the conveying.

[0019] Moreover, this design not only meets the stamping requirements of cylindrical workpieces, but also ensures the accuracy of the subsequent punching die positioning. Since the workpiece can maintain a stable posture and position during the conveying process, the punching die can more accurately locate the punching position on the workpiece, thereby further improving the quality and consistency of the product. In general, this innovative automated progressive stamping die has shown significant advantages in improving production efficiency, reducing defective rates, and optimizing process flows. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0021] The present invention may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0022] Figure 1 It is a schematic diagram of the overall external three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall front plan structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the upper die base of the present invention;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the lower die base of the present invention;

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the feeding mechanism in the present invention;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the plastic mold in the present invention;

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the punching die in the present invention;

[0029] Figure 8 It is a schematic diagram of the bottom structure of the punching die in the present invention;

[0030] Fig. 9 It is a schematic diagram of the three-dimensional structure of the punching base in the present invention;

[0031] Fig.10 It is a schematic diagram of the three-dimensional structure of the workpiece manufactured in the present invention.

[0032] In the figure: 1. lower die seat; 2. upper die seat; 3. feeding motor; 300, feeding wheel; 4. feeding rack; 5. punching top seat; 6. shaping punch seat; 600, re-compression spring; 601, reset push groove; 7. compound push rack; 8. bottom hole punch; 9. shaping die seat; 10. disengagement push spring; 11. transmission slide; 110, reset push spring; 12. wedge-shaped slide; 13. side hole punch; 14. tooth row; 15. punching base; 16. guide ring frame; 17. detection frame; 18. detection push block; 180, detection tension spring; 19. stop switch; 20. support guide arm; 21. gear; 22. workpiece; 220, positioning hole; 221, installation bottom hole. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] For example, see Figure 1 It can be seen that the progressive die mainly includes a lower die base 1 and an upper die base 2. In actual application, the lower die base 1 is generally fixed to the lower pad part of the hydraulic press, and fasteners are used to ensure that the lower die base 1 is firmly placed on the lower pad; the upper die base 2 is generally installed on the upper pad part of the hydraulic press to ensure that the upper die base 2 can be controlled by the hydraulic system to move up and down.

[0035] Different from the prior art, the shaping die seat 9 in the first embodiment of the present invention is arranged in a split type, such as Figure 1and Figure 6 As shown, there are two shaping die seats 9, both of which are movably mounted on the surface of the lower die seat 1. The two shaping die seats 9 are guided by a round rod between the two shaping die seats 9 to achieve a directional relative approach between the shaping die seats 9, thereby forming an upwardly open cylindrical tube. A disengagement spring 10 located on the outside of the round rod is connected between the shaping die seats 9, so that the two shaping die seats 9 are pushed by the elastic force of the disengagement spring 10 to be relatively separated under normal conditions. In more detail, from Figure 6 It can be seen that a cylindrical hole is provided at the bottom of the shaping die seat 9, and a cylindrical tube is connected to the corresponding position on the lower die seat 1. When the two shaping die seats 9 are fitted together, the cylindrical tube is used to block the shaping die seat 9. Moreover, when the workpiece 22 is pressed into the inner cavity of the shaping die seat 9 and shaped, the air in the inner cavity of the shaping die seat 9 can be discharged from the cylindrical tube.

[0036] Corresponding to the above, combined with Figure 2 and Figure 3 It can be seen that the upper die seat 2 is provided with a composite push frame 7 fastened by bolts, and a rectangular groove is provided in the middle of the composite push frame 7. The width of the rectangular groove corresponds to the thickness of the side edges of the two shaping die seats 9 after being fitted together, and an angle is provided at the end of the composite push frame 7. Figure 2 , Figure 3 as well as Figure 6 It can be clearly seen that when the hydraulic press pushes the upper die seat 2 to move downward, the end of the composite push frame 7 first contacts the side of the shaping die seat 9, thereby forcing the two shaping die seats 9 to move closer to each other until the two shaping die seats 9 are completely fitted together. At this time, the rectangular groove opened in the middle of the composite push frame 7 is used to ensure that the shaping die seats 9 are always fitted together. When the upper die seat 2 moves downward, the shaping punch seat 6 set on the upper die seat 2 will move downward synchronously. Since the center line of the shaping punch seat 6 and the closed shaping die seat 9 are aligned, when the shaping punch seat 6 moves downward with the upper die seat 2, the workpiece 22 can be pressed into the inner cavity of the shaping die seat 9, thereby completing the stamping of the workpiece 22.

[0037] In actual application, the workpiece 22 is fed to the top of the shaping die seat 9 by the feeding mechanism. Figure 2 , Figure 4 and Figure 5It can be seen that the feeding mechanism includes: a feeding rack 4 for conveying the workpiece 22, and the feeding rack 4 generally has a positioning plate fixed by bolts, and the positioning plate is used to provide a placement position for the workpiece 22. The feeding rack 4 is supported by a support slide fixed on the lower die seat 1 to ensure that the feeding rack 4 can only move in one direction in the horizontal direction; secondly, it also includes a feeding wheel 300 for driving the feeding rack 4, and the feeding wheel 300 is fitted with the feeding rack 4. The feeding wheel 300 is driven by the feeding motor 3. Generally, the feeding motor 3 is fixed to the feeding position of the lower die seat 1 through the motor frame, and the feeding wheel 300 is driven to rotate by the feeding motor 3, so that the feeding rack 4 moves the positioned workpiece 22 to the top of the shaping die seat 9. It should be noted that the bottom of the positioning plate will be attached to the upper surface of the closed shaping die seat 9, and the inner diameter of the positioning plate must be larger than the inner diameter of the shaping die seat 9 after closing, so as to ensure that after the shaping punch seat 6 is pressed downward, the pressed workpiece 22 can directly enter the inner cavity of the shaping die seat 9 and perform the shaping work.

[0038] Combination Figure 2 As shown, when the hydraulic press drives the upper die seat 2 to press downward, the composite push frame 7 will preferentially contact the side parts of the shaping die seat 9, and as the upper die seat 2 moves downward, the shaping die seats 9 are forced to move closer to each other, while the disengagement push spring 10 is pressed and accumulated. At this time, the two shaping die seats 9 are closed together and form a cylinder that opens upward. As the upper die seat 2 moves downward further, the shaping punch seat 6 will press the workpiece 22 in the positioning plate, and squeeze the middle part of the workpiece 22 downward and enter the inner cavity of the shaping die seat 9. Finally, when the shaping punch seat 6 moves downward to the bottom, the shaping punch seat 6 and the shaping die seat 9 restrict the workpiece 22, forcing the workpiece 22 to form a cylinder that opens upward. Combined with Figure 3 and Figure 6 It can be seen that an annular protrusion is arranged on the outer side of the shaping punch seat 6. When the shaping punch seat 6 descends to the bottom, the annular protrusion on the outer side of the shaping punch seat 6 will be pressed into the positioning plate on the feeding rack 4. The top of the workpiece 22 is pressed together by the annular protrusion and the positioning plate, so that the top of the workpiece 22 is also relatively flat.

[0039] When the stamping is completed, the upper die seat 2 is forced to reset and lift upward by a hydraulic press. At this time, the shaping punch seat 6 and the composite push frame 7 move away from the lower die seat 1 until they are separated. When the composite push frame 7 releases the restriction on the shaping die seat 9, the two shaping die seats 9 are pushed by the elastic force of the disengagement push spring 10 to force them to move relatively apart. At this time, the top of the workpiece 22 is supported by the positioning plate and will not fall, and the distance between the two shaping die seats 9 is also relatively larger than the outer diameter of the workpiece 22. Afterwards, the feeding motor 3 drives the feeding wheel 300 to drive the feeding frame 4 to transport the workpiece 22 after stamping to the subsequent punching die, and complete the punching of the workpiece 22 after stamping in the subsequent die.

[0040] It can be seen that in the implementation of the first embodiment, since the shaping die seat 9 is arranged in a split type, it not only satisfies the requirement that the workpiece 22 can be stamped and formed as required, but also enables the workpiece 22 to be quickly separated from the shaping die seat 9 after the stamping is completed. Figure 2 It can be seen that the feeding rack 4 only needs to perform horizontal conveying to complete the handling of the workpiece 22, which greatly ensures the accuracy of the material conveying by the feeding rack 4.

[0041] The second embodiment is a further improvement on the basis of the first embodiment. Figure 2-Figure 4 and Fig. 9 It can be seen that the surface of the lower die base 1 has a punching base 15 fastened by bolts. When the positioning plate on the feed rack 4 moves the formed workpiece 22 to the top of the punching base 15, the punching base 15 can be used to firmly support the formed workpiece 22. Correspondingly, the upper die base 2 has a bottom hole punch 8 fastened by bolts. When the hydraulic press pushes the shaping punch base 6 downward to punch the workpiece 22, the bottom hole punch 8 also moves downward synchronously to punch the formed workpiece 22. Fig. 9 As shown, a corresponding feed hole is opened on the surface of the punching base 15. When the bottom hole punch 8 punches the workpiece 22, the punched waste falls from the feed hole. After that, the waste slides outward along the inclined surface set on the side of the punching base 15, ensuring that the waste can be discharged normally.

[0042] Moreover, combined with Figure 1-Figure 4 It can be clearly seen that in order to punch the side of the workpiece 22, a transmission slide 11 located below the shaping die seat 9 is movably mounted on the surface of the lower die seat 1, and the transmission slide 11 can perform horizontal unidirectional reciprocating motion along the surface of the lower die seat 1. A wedge-shaped slider 12 is fixedly mounted on one end of the transmission slide 11. Figure 2It can be seen that the side hole punch 13 is fastened to the wedge-shaped slider 12 by bolts, and correspondingly, there is a punching top seat 5 fastened by bolts on the upper die seat 2. When the upper die seat 2 pushes the punching top seat 5 downward, the cooperation between the punching top seat 5 and the wedge-shaped slider 12 forces the wedge-shaped slider 12 to push the side hole punch 13 toward the outside of the shaping die seat 9, and the side hole punch 13 is used to pass through the punching holes reserved on the outer side of the shaping die seat 9 and the workpiece 22 formed inside the shaping die seat 9, thereby realizing side punching of the formed workpiece 22. More specifically, a return spring 110 is fixedly connected to the end of the transmission slide 11 away from the wedge-shaped slider 12, and the other end of the return spring 110 is fastened to the lower die base 1. In the initial state, under the push of the elastic force of the return spring 110, the transmission slide 11 is forced to push the wedge-shaped slider 12 to move away from the shaping die base 9, and finally the side hole punch 13 moves away from the shaping die base 9 under normal conditions.

[0043] In order to ensure that the workpiece 22 is first stamped and then punched, the manufacturing process is combined with Figure 2 and Figure 3 It can be seen that the shaping punch seat 6 is movably mounted on the upper die seat 2, and a compressing spring 600 is arranged between the shaping punch seat 6 and the upper die seat 2. When the shaping punch seat 6 completes punching the workpiece 22, as the upper die seat 2 continues to move downward, the compressing spring 600 will be compressed, and the punching top seat 5 will move downward and push the wedge-shaped slider 12 toward the shaping concave die seat 9 to complete the punching work. Figure 2 It can be seen that a reset push groove 601 is provided on the side of the shaping punch seat 6. After the side hole punch 13 punches the workpiece 22, the reset push groove 601 can be used to temporarily store the waste material after the workpiece 22 is punched out. When the upper die seat 2 is completely separated from the lower die seat 1, the waste material falls downward. Since the shaping die seat 9 will be relatively far away after the upper die seat 2 rises, the fallen waste material will not fall into the inner cavity of the shaping die seat 9.

[0044] In actual application, the feeding motor 3 drives the feeding rack 4 to convey the workpiece 22 in the positioning plate forward through the feeding wheel 300, and the workpiece 22 formed in the shaping die seat 9 is conveyed to the top of the punching base 15. As the hydraulic press pushes the upper die seat 2 to move downward, the shaping punch seat 6 first presses the workpiece 22 above the shaping die seat 9, and as the shaping punch seat 6 presses the workpiece 22 into the shaping die seat 9, the stamping forming of the workpiece 22 in the shaping die seat 9 is completed.

[0045] Secondly, as the upper die seat 2 is further pressed downward, the shaping punch seat 6 will not be able to move downward any further. At this time, the descending upper die seat 2 will further suppress the recompression spring 600 and shrink it. Afterwards, as the upper die seat 2 moves further downward, the punching top seat 5 will push the wedge-shaped slider 12 toward the shaping die seat 9, and the transmission slide 11 will compress the reset push spring 110 at the same time. After passing through the punching hole reserved on the outer side of the shaping die seat 9, the side hole punch 13 will punch the side of the workpiece 22 after the stamping inside the shaping die seat 9, and the punched waste will be temporarily stored in the reset push groove 601. At the same time, the descending upper die seat 2 pushes the bottom hole punch 8 to synchronously punch the workpiece 22 on the punching base 15. At this point, the workpiece 22 on the punching base 15 has completed the punching of the bottom and sides, and the workpiece 22 is processed.

[0046] Finally, the upper die seat 2 moves upward, and the shaping punch seat 6 still cannot move under the elastic force of the compression spring 600. Afterwards, as the punching top seat 5 and the bottom hole punch 8 follow the upper die seat 2 to move upward, they are separated from their respective punching holes. The wedge-shaped slider 12 will also be pushed by the reset spring 110 to drag the side hole punch 13 relatively away from the workpiece 22. When the upper die seat 2 is completely separated from the lower die seat 1, the shaping die seat 9 is completely opened, and the feeding frame 4 conveys the formed workpiece 22 in the shaping die seat 9 to the top of the punching base 15, so as to achieve the punching of the bottom of the formed workpiece 22.

[0047] On this basis, in order to facilitate demoulding of the formed workpiece 22, Figure 2It can be clearly seen that the upper die seat 2 and the shaping punch seat 6 can move relative to each other, and when the upper die seat 2 and the shaping punch seat 6 move relative to each other, the one-way air valve fixed on the shaping punch seat 6 can quickly replenish the airflow when the pressure in the inner cavity of the shaping punch seat 6 decreases. When the upper die seat 2 moves upward, the airflow in the inner cavity of the shaping punch seat 6 cannot be quickly discharged due to the exhaust hole opened at the end of the shaping punch seat 6. Therefore, the shaping punch seat 6 will move upward synchronously with the upper die seat 2. Specifically, when the shaping punch seat 6 completely presses the workpiece 22 into the inner cavity of the shaping concave die seat 9, the stretching and stamping of the workpiece 22 is completed. As the upper die seat 2 further pushes downward and compresses the compression spring 600, the space in the inner cavity at the top of the shaping punch seat 6 is relatively increased by the downward movement of the upper die seat 2, thereby reducing the pressure in the inner cavity, and the external airflow is poured into the inner cavity at the top of the shaping punch seat 6 through the one-way air inlet valve. When the punching work is completed, the upper die seat 2 is driven by the hydraulic press to move upward. Since the airflow in the inner cavity of the shaping punch seat 6 cannot be discharged from the exhaust hole on the top in time, the shaping punch seat 6 will have a tendency to move upward synchronously. At this time, the punching top seat 5 still presses the wedge-shaped slider 12 to force the side hole punch 13 to insert into the side of the workpiece 22. Therefore, when the shaping punch seat 6 moves upward, the workpiece 22 is restricted by the insertion of the side hole punch 13 and cannot move. There is a relative movement between the upward shaping punch seat 6 and the workpiece 22, so as to achieve the separation between the workpiece 22 and the shaping punch seat 6. As the shaping punch seat 6 continues to move upward, the side hole punch 13 will also move along the reset push groove 601 opened on the side of the shaping punch seat 6. When the upper die seat 2 drives the punching top seat 5 to move further upward, the punching top seat 5 releases the pressure on the wedge-shaped slider 12. At this time, under the push of the elastic force of the reset push spring 110, the side hole punch 13 will also move away from the workpiece 22. Finally, when the upper die seat 2 is completely separated from the lower die seat 1, the shaping die seat 9 is pushed open by the spring 10 to achieve separation between the shaping die seat 9 and the workpiece 22. From the above, it can be seen that as a supplement to the second embodiment, this method can force the formed workpiece 22 and the shaping punch seat 6 / shaping die seat 9 to separate easily after the workpiece 22 is stamped.

[0048] Embodiment 3 is a further improvement on the basis of embodiment 2. In order to ensure that the position between the side hole punch 13 and the bottom hole punch 8 is more accurate after punching, please refer to Figure 2-Figure 6 as well as Figure 6-Figure 8It can be seen that a pair of meshing gears 21 are movably installed at the bottom of the punching base 15. The two gears 21 have the same diameter but different heights. The outer teeth of the higher gear 21 mesh with the tooth row 14, and the tooth row 14 is fastened to the end of the transmission slide 11 by bolts, so that the tooth row 14 can be driven to move synchronously when the transmission slide 11 moves. Since the outer teeth arranged on the side of the tooth row 14 are limited in length, when the outer teeth of the tooth row 14 and the gear 21 are disengaged, the friction between the two forces the tooth row 14 to still move.

[0049] The outer sides of the two gears 21 are both connected by bolts, and the detection frame 17 is movably mounted on the support guide arm 20. The detection frame 17 and the support guide arm 20 can move relative to each other. Figure 7 It can be seen that a guide ring frame 16 is fastened to the outside of the punching base 15 to limit the movement path of the detection frame 17. The guide ring frame 16 can force the detection frame 17 to rotate around the center line of the punching base 15. Therefore, when the gear row 14 pushes the gear 21 to move, the two gears 21 are meshed, forcing the two detection frames 17 to move along the outside of the punching base 15 respectively.

[0050] More specifically, from Figure 7 It can be seen that a detection push block 18 is movably installed at the end of the detection frame 17, and the end of the detection push block 18 forms a right triangle. A detection tension spring 180 is generally arranged between the detection push block 18 and the detection frame 17. Under the elastic pull of the detection tension spring 180, the detection push block 18 always has a tendency to move toward the middle of the punching base 15. It is important that a stop switch 19 is fixedly installed on the side of the detection push block 18. Since there are two detection push blocks 18, the number of stop switches 19 is also two. When the two stop switches 19 follow the detection push block 18 to move toward the middle of the punching base 15, the stop switch 19 will eventually reach the side of the detection frame 17, forcing the stop switch 19 to turn on. With respect to the layout of the circuit, both stop switches 19 serve as the input end of the plc controller. Only when both stop switches 19 are squeezed, the plc controller will process the signal and output the signal to the feeding motor 3, so that it starts working after the delay setting time.

[0051] In actual application, the upper die seat 2 is pushed downward by a hydraulic press, combined with Figure 2It can be seen that the length of the punching top seat 5 is relatively greater than that of the composite push frame 7 and the shaping punch seat 6. In addition, the side of the punching top seat 5 is also provided with two mutually parallel guide surfaces, and the two guide surfaces are transitioned by an oblique angle. When the upper die seat 2 moves downward, the inclined surface at the bottom of the punching top seat 5 will first reach the wedge-shaped slider 12, and then the wedge-shaped slider 12 will be pushed toward the shaping die seat 9 until the wedge-shaped slider 12 moves to the guide surface below the punching top seat 5. In this process, the side hole punch 13 approaches the shaping die seat 9, and the end of the side hole punch 13 is used to make up for the punching area opened on the side of the shaping die seat 9; in addition, the wedge-shaped slider 12 is pushed to the right, which will simultaneously push the tooth row 14 to move to the right, and the moving tooth row 14 and the gear 21 are meshed, forcing the gears 21 to rotate relative to each other, and the gear 21 supports the guide arm 20 to make the detection frame 17 move in a circle along the guide ring frame 16. Since there is a formed workpiece 22 above the punching base 15 at this time, when the detection frame 17 moves along the guide ring frame 16, the detection push block 18 always hits the outer arc surface of the workpiece 22, and is affected by the outer arc surface of the workpiece 22, forcing the detection push block 18 to pull the detection tension spring 180, and the stop switch 19 is relatively far away from the detection frame 17, and the detection frame 17 is not turned on at this time. In actual arrangement, since the detection push block 18 and the positioning hole 220 opened on the side of the workpiece 22 are at the same height, when the detection frame 17 drives the detection push block 18 to move along the outer side of the workpiece 22, if the workpiece 22 is rotated and offset, a moving detection push block 18 will be inserted into the positioning hole 220, and the detection push block 18 will drive the workpiece 22 to rotate. When the wedge-shaped slider 12 is completely moved to the guide surface at the bottom of the punching top seat 5, the outer teeth on the tooth row 14 have rotated the gear 21 and made the detection push blocks 18 fit together. At this time, the two detection push blocks 18 are pushed into the positioning hole 220 to achieve the positioning of the workpiece 22. In addition, when the two detection push blocks 18 are close to each other, the outer teeth of the tooth row 14 will also be separated from the gear 21, and finally, the side of the tooth row 14 and the gear 21 are in contact with each other.

[0052] When the two detection push blocks 18 are fitted together, an isosceles triangle is formed between the ends of the two detection push blocks 18. The detection tension spring 180 is used to pull the detection push block 18 further toward the positioning hole 220. On the one hand, the detection push block 18 is inserted into the positioning hole 220 for precise positioning; on the other hand, the stop switch 19 will also contact the detection frame 17, forcing the feeding motor 3 to start delayed start. In this process, as the upper die seat 2 continues to move downward, the composite push frame 7 contacts the side of the shaping die seat 9 before the shaping punch seat 6, and forces the shaping die seat 9 to fit together. As the shaping punch seat 6 is pressed downward, the workpiece 22 is pressed into the shaping die seat 9 and the stamping is completed. Afterwards, as the upper die seat 2 moves further downward, the wedge-shaped slider 12 moves to the guide surface of the outer side of the punching top seat 5 close to the upper die seat 2 through the inclined surface, forcing the wedge-shaped slider 12 to move further, thereby completing the punching of the side of the workpiece 22 by the side hole punch 13. Finally, the positioning hole 220 is punched out by the side hole punch 13, and the bottom hole punch 8 punches out the installation bottom hole 221. It should be noted that in this process, even if the wedge-shaped slider 12 drives the gear row 14 to move again according to the transmission slide 11, due to the relative contact between the gear row 14 and the gear 21, the gear 21 is restricted by the fit between the detection push block 18 and cannot move. Therefore, relative sliding will occur between the part of the gear 21 without external teeth and the gear row 14. Afterwards, the punching process between the side hole punch 13 and the bottom hole punch 8 is as described in the second embodiment.

[0053] At this time, the feeding motor 3 will also start to start (even if the feeding motor 3 starts in advance, the workpiece 22 after stamping is blocked by the shaping die seat 9, forcing the positioning plate to be unable to move, and the feeding rack 4 will also be unable to move. The rotation of the feeding wheel 300 will cause relative sliding between the feeding rack 4). When the upper die seat 2 moves upward, it will drag the shaping punch seat 6 to be relatively away from the feeding rack 4 first. Since the length of the punching top seat 5 extending downward is the largest, when the composite push rack 7 is separated from the shaping die seat 9, the movement of the feeding rack 4 is no longer hindered, and the relative sliding between the feeding wheel 300 and the feeding rack 4 is transformed into the feeding wheel 300 driving the feeding rack 4 to move forward until the positioning plate on the next feeding rack 4 is against the punching top seat 5. At this time, the workpiece 22 on the punching base 15 follows the feeding rack 4 to be relatively away from the detection push block 18. Under the elastic force of the detection tension spring 180, the stop switch 19 still is against the detection rack 17, that is, the stop switch 19 is still turned on. Since the movement of the positioning plate on the feeding rack 4 is blocked by the punching top seat 5, when the feeding rack 4 drives the workpiece 22 on the punching base 15 to move, the workpiece 22 will be away from the detection push block 18 and move a certain distance.

[0054] As the upper die seat 2 continues to move upward, the punching top seat 5 will also be separated from the wedge-shaped slider 12 and eventually move upward over the feed rack 4. At this time, under the push of the elastic force of the reset push spring 110, the wedge-shaped slider 12 drives the side hole punch 13 away from the workpiece 22 in the shaping die seat 9, and when the transmission slide 11 pulls the gear row 14 to move, the outer teeth of the gear row 14 engage with the gear 21, and drive the gear 21 to drive the detection frame 17 to return to the normal position through the support guide arm 20. In combination with the above, the workpiece 22 on the punching base 15 will move a certain distance. Therefore, when the detection frame 17 drives the detection push block 18 to reset, the workpiece 22 no longer exists on the punching base 15. As the workpiece 22 in the shaping die seat 9 continues to move to the right, the outer side of the workpiece 22 will eventually reach the detection push block 18, and the detection push block 18 will overcome the tension of the detection tension spring 180. The stop switch 19 is away from the detection frame 17. After the stop switch 19 is no longer connected, the feeding motor 3 also stops working and no longer feeds. After that, the upper die seat 2 descends again to realize punching after stamping, and the cycle is repeated to realize continuous progressive stamping and punching of the workpiece 22.

Claims

1. An automated progressive stamping die, characterized in that: include: The lower die base (1) and the upper die base (2) are mounted to the upper / lower pad parts of the hydraulic press correspondingly; A shaping die seat (9), wherein the two shaping die seats (9) are movably mounted on the surface of the lower die seat (1), and the shaping die seats (9) can form an upwardly open cylindrical tube when they are relatively close to each other, and a disengagement push spring (10) is connected between the two shaping die seats (9); The composite push frame (7) is firmly connected to the upper die seat (2), and when the composite push frame (7) follows the upper die seat (2) downward, it can close the opened shaping die seat (9); The shaping punch seat (6) is arranged on the upper die seat (2) and is inserted into the shaping die seat (9) to realize stamping and forming of the workpiece (22).

2. The automated progressive stamping die according to claim 1, characterized in that: A cylindrical hole is provided at the bottom of the shaping die seat (9), and a cylindrical tube is correspondingly connected to the lower die seat (1).

3. The automated progressive stamping die according to claim 1, characterized in that: A rectangular groove is provided in the middle of the composite push frame (7), and an oblique angle is provided at the end of the composite push frame (7).

4. The automated progressive stamping die according to claim 1, characterized in that: A feeding rack (4) lifted by a supporting slide is provided on the lower die base (1), and a positioning plate for placing a workpiece (22) is fixed on the feeding rack (4); a feeding motor (3) fixed by a motor rack is provided on one side of the feeding portion of the lower die base (1), and a feeding wheel (300) fixed by an output shaft of the feeding motor (3) is fitted between the feeding rack (4).

5. The automated progressive stamping die according to any one of claims 1 or 4, characterized in that: A punching base (15) is fixedly connected to the surface of the lower die base (1), and a bottom hole punch (8) is fixed on the upper die base (2).

6. The automated progressive stamping die according to claim 5, characterized in that: A transmission slide (11) is movably mounted on the surface of the lower die base (1), a return spring (110) is connected between the transmission slide (11) and the lower die base (1), and a wedge-shaped slider (12) is fixedly mounted on one end of the transmission slide (11), a side hole punch (13) is mounted on the wedge-shaped slider (12), a punching top seat (5) is fixedly connected to the upper die base (2), and a compression spring (600) is arranged between the shaping punch seat (6) and the upper die base (2).

7. The automated progressive stamping die according to claim 6, characterized in that: A resetting push groove (601) is provided on the side of the shaping punch seat (6).

8. The automated progressive stamping die according to claim 6, characterized in that: A one-way air valve is fixedly installed on the top of the shaping punch seat (6), and the one-way air valve enables the external air flow to transport air to the inner cavity of the shaping punch seat (6) in one direction, and an exhaust hole is opened at the end of the shaping punch seat (6).

9. The automated progressive stamping die according to claim 7, characterized in that: A pair of meshing gears (21) are movably mounted at the bottom of the punching base (15), the outer teeth of the gears (21) are meshed with a tooth row (14), the tooth row (14) is fastened to the end of the transmission slide (11), the outer side of the gears (21) is fastened to a support guide arm (20), and a detection frame (17) is movably mounted on the support guide arm (20), the outer side of the punching base (15) is fastened to a guide ring frame (16), the end of the detection frame (17) is movably mounted with a detection push block (18), a detection tension spring (180) is arranged between the detection push block (18) and the detection frame (17), and a stop switch (19) is fixedly mounted on the side of the detection push block (18).

10. The automated progressive stamping die according to claim 9, characterized in that: The two stop switches (19) are both used as input terminals of the PLC controller. When the two stop switches (19) are squeezed, the PLC controller processes the signal and outputs a signal to the feeding motor (3) to delay its operation.

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