Workpiece stamping die

Abstract

The workpiece stamping die comprises an upper die body and a lower die body, the lower die body comprises a blanking hole, a waste removing mechanism is arranged at the bottom of the lower die body, a transmission structure is arranged between the waste removing mechanism and the upper die body, and when the upper die body ascends or descends, the upper die body acts on the transmission structure and enables the transmission structure to move transversely. The waste removing mechanism transversely acts along with the transmission structure so as to remove blanking waste. The upper die and the waste removing mechanism are in transmission through the transmission structure, when the upper die ascends or descends, waste can be synchronously removed and discharged, it is guaranteed that waste is not accumulated after blanking, meanwhile, no power part needs to be additionally arranged, and an operator can conveniently judge the blanking quality through the waste through synchronous waste discharging.

Description

Technical Field

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

[0002] Stamping dies are special process equipment used to process materials into parts or semi-finished products in cold stamping. Stamping is a pressure processing method that uses a die installed on a press to apply pressure to the material at room temperature to separate or plastically deform it, thereby obtaining the desired parts.

[0003] Punching is a common form of stamping production. Waste is generated when the workpiece is punched. If the waste cannot be discharged in time and accumulates, it will interfere with subsequent stamping. When punching some workpieces, the quality of the punching can often be judged to a certain extent by observing the waste condition, but it is difficult for existing equipment to complete the regular waste discharge. Utility Model Content

[0004] The purpose of the present application is to provide a workpiece stamping die.

[0005] In order to achieve the above objectives, the technical solution adopted in the present application is: a workpiece stamping die, comprising an upper die and a lower die, the lower die comprising a punching hole, a waste cleaning mechanism is provided at the bottom of the lower die, a transmission structure is provided between the waste cleaning mechanism and the upper die, when the upper die rises or falls, it acts on the transmission structure and causes it to move laterally, and the waste cleaning mechanism moves laterally with the transmission structure to remove the punching waste.

[0006] Preferably, the waste cleaning mechanism comprises a waste cleaning portion which cooperates with the transmission structure to perform horizontal movement and a waste cleaning space connected to the bottom of the punching hole, and the waste cleaning space at least transversely penetrates one side wall of the lower mold; the transmission structure causes the waste cleaning portion to move toward one side of the punching hole, and when it moves to the extreme position, the outer end of the waste cleaning portion is flush with the side wall of the waste cleaning space or extends out of the side wall of the waste cleaning space.

[0007] Preferably, the transmission structure includes a transmission rod fixedly connected to the upper mold and a guide assembly arranged at the bottom of the transmission rod, the guide assembly includes a vertically arranged guide part and a laterally arranged guide block, the guide block is fixedly connected to the waste cleaning part, the top of the guide part is fixedly connected to the bottom of the transmission rod, and the transmission structure also includes a reset member acting on the guide block.

[0008] As a preferred embodiment, a loading space for moving the strip material is formed in the middle of the top of the lower mold, and the transmission rod is located outside the loading space; a through hole is provided at the corresponding position of the lower mold to allow the bottom end of the transmission rod to pass through; the lower mold is provided with a guide space on the side of the waste cleaning space, and the guide assembly acts in the guide space, and an avoidance groove is opened between the guide space and the waste cleaning space, and an extension rod is fixedly provided on the side of the waste cleaning part, and the extension rod passes through the avoidance groove and is fixedly connected to the guide block.

[0009] As a preference, the reset member acts on the guide block so that the inclined surface of the guide block and the guide portion are in close contact to form a guide. When the upper mold is lowered to close the mold, the guide portion is located above the top end of the inclined surface of the guide block. When the guide portion is lowered, the corresponding guide portion moves toward the waste cleaning side.

[0010] As another preferred embodiment, the reset member acts on the guide block so that the inclined surface of the guide block and the guide portion are tightly attached to form a guide; when the upper mold is lowered to close the mold, the guide portion is located below the top end of the inclined surface of the guide block, and when the guide portion is lowered, the guide portion correspondingly moves toward the side away from the waste cleaning.

[0011] Furthermore, the guide portion is extended in the moving direction of removing the waste material, so that the guide portion and the inner side of the top of the inclined surface of the guide block are abutted against each other.

[0012] Preferably, the lower die further comprises a stamping cavity, a demolding rod is slidably provided at the bottom of the stamping cavity, and the bottom of the demolding rod interacts with the waste cleaning part; in an initial state and in a mold closing state, the thickness of the waste cleaning part corresponding to the demolding rod is smaller than the thickness at other positions, so that the top of the demolding rod does not protrude from the stamping cavity; when demolding, the upper die rises, and the waste cleaning part is actuated to raise the demolding rod.

[0013] Compared with the prior art, the beneficial effects of this application are:

[0014] In the present application, the upper die and the waste clearing mechanism are driven by a transmission structure. When the upper die is raised or lowered, the waste can be cleared and discharged synchronously, which is beneficial to ensure that waste does not accumulate after punching. At the same time, there is no need to add additional power components. The synchronous waste discharge also makes it easy for the operator to judge the punching quality through the waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0016] Figure 2 yes Figure 1 Schematic diagram of another working state.

[0017] Figure 3 When the first transmission structure is adopted Figure 1 sectional view of .

[0018] Figure 4 It is a schematic diagram of the structure at the lower template.

[0019] Figure 5 When the second transmission structure is adopted Figure 1 sectional view of .

[0020] In the figure: 1. upper die; 2. unloading plate; 3. lower die; 4. lower template; 5. punching position; 6. waste cleaning space; 7. feeding space; 8. punching head; 9. transmission rod; 10. reset assembly; 11. punching head; 12. reset member; 13. guide block; 14. waste cleaning part; 15. guide part. DETAILED DESCRIPTION

[0021] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present application.

[0023] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0024] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0025] Embodiment 1:

[0026] Reference Figures 1 to 5This embodiment proposes a workpiece stamping die, including an upper die 1 and a lower die 3, the lower die 3 includes a punching hole, a waste cleaning mechanism is arranged at the bottom of the lower die 3, a transmission structure is arranged between the waste cleaning mechanism and the upper die 1, when the upper die 1 rises or falls, it acts on the transmission structure and causes it to move laterally, and the waste cleaning mechanism moves laterally with the transmission structure to remove the punching waste.

[0027] like Figure 1 The figure shows the initial state of the mold. The upper mold 1 and the stripper plate 2 of the mold are separated by the action of the reset component 10. The top of the upper mold 1 can be connected to a driving unit for lifting and lowering. When punching, the upper mold 1 descends, and the stripper plate 2 correspondingly descends. After the stripper plate 2 and the lower mold 3 abut, the reset component 10 is compressed, and the punching head 11 or the punching head 8 at the bottom of the upper mold 1 begins to enter the corresponding punching position for punching. After completion, the upper mold 1 rises, and the reset component 10 begins to reset, and finally the whole is restored to the initial state. Figure 1 Above the middle punching position 5 is the punching head 11 installed on the upper die 1, and below is the punching hole. Below the punching head 8, a punching cavity is opened on the lower die 3 for punching and forming. Of course, the punching head 8 here is only a schematic representation, and in fact, it can be set to other types of punching heads 8 as needed.

[0028] In the middle of the front of the upper mold 1, there is a Figures 2 to 5 The transmission structure shown in the figure moves horizontally as the upper die 1 rises or falls, and generates a stroke that can push away the waste material during the horizontal movement, thereby discharging the waste material. The transmission structure moves with the upper die 1, and no additional power equipment is required, and it can keep pace with the production process. In the blanking process, the processing quality of some blanking parts can be judged by the blanking waste. In this embodiment, the blanking waste will be discharged at each blanking, and the operator can simultaneously observe the waste situation to control the blanking quality.

[0029] Embodiment 2:

[0030] Based on Example 1, refer to Figure 2 , Figure 4 As shown, the waste cleaning mechanism includes a waste cleaning portion 14 that moves horizontally in cooperation with the transmission structure and a waste cleaning space 6 connected to the bottom of the punching hole, and the waste cleaning space 6 at least horizontally penetrates one side wall of the lower mold 3; the transmission structure moves the waste cleaning portion 14 toward the punching hole, and when it moves to the extreme position, the outer end of the waste cleaning portion 14 is flush with the side wall of the waste cleaning space 6 or extends out of the side wall of the waste cleaning space 6. Figure 4 As shown, the waste removal space 6 on the left side can extend to the right until it penetrates the right side, or only the left side can be penetrated. Figure 4 On the right side of the corresponding position of the punching hole, the waste removal part 14 can cooperate with the transmission structure to move toward Figure 4The waste removal can be ensured by moving the waste removal part 14 to the left side of the state until the left end of the waste removal part 14 is flush with the leftmost side of the waste removal space 6, or the waste removal part 14 extends out of the waste removal space 6, that is, the left side wall of the lower template 4. Obviously, the waste removal part 14 is preferably able to fit exactly with the waste removal space 6. Of course, the waste removal can also be carried out if the diameter of the waste removal part 14 is slightly smaller than the waste removal space 6. Therefore, the specific sizes of the waste removal part 14 and the waste removal space 6 are not limited in this embodiment.

[0031] Embodiment 3:

[0032] Based on Example 2, refer to Figure 3 and Figure 4 The transmission structure includes a transmission rod 9 fixedly connected to the upper mold 1 and a guide assembly arranged at the bottom of the transmission rod 9. The guide assembly includes a vertically arranged guide portion 15 and a horizontally arranged guide block 13. The guide block 13 is fixedly connected to the waste removal portion 14, and the top of the guide portion 15 is fixedly connected to the bottom of the transmission rod 9. The transmission structure also includes a reset member 12 acting on the guide block 13. The transmission rod 9 can allow the guide block 13 to move laterally through the guiding action. The transmission rod 9 moves with the upper mold 1, and the corresponding guide block 13 moves synchronously. By adding the reset member 12, it can be ensured that when the transmission rod 9 is reset, the guide block 13 is reset close to the guide portion 15, thereby ensuring cyclic synchronous movement.

[0033] like Figure 1 , Figure 4 As shown, a loading space 7 for moving the strip material is formed in the middle of the top of the lower mold 3, and the transmission rod 9 is located outside the loading space 7; a through hole is provided at the corresponding position of the lower mold 3 to allow the bottom end of the transmission rod 9 to pass through; the lower mold 3 is provided with a guide space on the side of the waste cleaning space 6, and the guide assembly acts in the guide space, and an avoidance groove is opened between the guide space and the waste cleaning space 6, and an extension rod is fixedly provided on the side of the waste cleaning part 14, and the extension rod passes through the avoidance groove and is fixedly connected to the guide block 13.

[0034] In this embodiment, by configuring the guide block 13 and the guide portion 15 differently, there are at least two feasible solutions:

[0035] (1) The reset member 12 acts on the guide block 13 so that the inclined surface of the guide block 13 and the guide portion 15 are closely attached to form a guide. When the upper mold 1 descends to close the mold, the guide portion 15 is located above the top of the inclined surface of the guide block 13. When the guide portion 15 descends, the corresponding guide portion 15 moves toward the waste removal side. Figure 3 , Figure 4 The situation shown is obviously the mold closing process at this time. No waste is generated at the beginning of this process. Therefore, this process removes the waste generated by the previous process. The initial state of the waste removal unit 14 can be referred to Figure 4, because during the punching, the guide portion 15 has acted on the guide block 13 for guidance, and the punching is specifically located in a short period of time before the mold is completed, at this time the guide block 13 has almost moved to the limit position (i.e. Figure 4 The left side of the waste cleaning part 14 is about to move to the maximum position to the left), at this time, the waste cleaning space 6 at the bottom of the punching hole is occupied by the waste cleaning part 14, so the waste will fall from the punching hole to the top surface of the waste cleaning part 14. When demolding, the guide part 15 rises and the corresponding guide block 13 is reset. At this time, the waste falls into the waste cleaning space 6. After the next punching process starts, the waste cleaning part 14 moves again to clear it, and the cycle is repeated.

[0036] (2) The reset member 12 acts on the guide block 13 so that the inclined surface of the guide block 13 and the guide portion 15 are in close contact with each other to form a guide; when the upper mold 1 descends to close the mold, the guide portion 15 is located below the top of the inclined surface of the guide block 13. When the guide portion 15 descends, the guide portion 15 moves toward the side away from the waste removal. Figure 5 As shown, since the transmission rod 9 is located at a relatively upper position, the guide portion 15 is like Figure 5 As in the embodiment, the length of the side close to the guide block 13 is extended, that is, it is extended. At this time, when the mold is just beginning to close, the upper mold 1 begins to descend. At this time, the guide block 13 is as shown in FIG. Figure 5 At the rightmost position, the corresponding waste cleaning part 14 has not occupied the waste cleaning space 6 corresponding to the punching hole, so the waste generated during mold closing can directly fall into the waste cleaning space 6. When the mold closing is completed, the punching is also completed accordingly. When demolding, the upper mold 1 rises, and the corresponding guide block 13 is guided to move to the left. At this time, the waste cleaning part 14 also moves to the left to remove the waste. Different from the guiding effect of the first type, this scheme can discharge the same punching waste generated at the same time during demolding (that is, when the upper mold 1 rises after the punching is completed).

[0037] Embodiment 4:

[0038] Based on Example 2, reference can be made to Example 3, reference Figure 1As shown, the lower mold 3 also includes a stamping cavity, and a demolding rod is slidably arranged at the bottom of the stamping cavity, and the bottom of the demolding rod interacts with the waste cleaning part 14; in the initial state and the mold closing state, the thickness of the waste cleaning part 14 corresponding to the demolding rod is smaller than the thickness at other positions, so that the top of the demolding rod does not protrude from the stamping cavity; when demolding, the upper mold 1 rises, and the waste cleaning part 14 is actuated to cause the demolding rod to rise. Since the stamping die of small workpieces often obtains multiple workpieces by stamping in one piece of material strip, as shown in the figure, the role of the waste removal part 14 and the transmission structure can be further expanded. By reducing the thickness of a part of the waste removal part 14, when the mold is closed, the bottom of the demoulding rod corresponds to the part of the waste removal part 14 with reduced thickness. Then, when the stamping is performed, the top of the demoulding rod will form a complete stamping cavity with the surface of the stamping cavity, so as not to affect the normal stamping process. After the stamping is completed, as the upper mold 1 rises, the waste removal part 14 begins to move under the action of the transmission structure, and the area with reduced thickness of the waste removal part 14 gradually passes through the demoulding rod. At this time, the demoulding rod will rise, and the demoulding rod will rise and protrude from the top surface of the stamping cavity, thereby ejecting the stamped workpiece. In order to ensure the stable rise of the demoulding rod (that is, the demoulding rod will not be stuck with the part of the waste removal part 14 with reduced thickness), the waste removal part 14 is transitioned by a bevel at the edge of the part with reduced thickness. Since the guiding role of the demoulding rod and the waste removal part 14 is similar to that of Example 3, it will not be repeated. However, this embodiment can achieve the effect of one mold for multiple purposes by arranging the punching and stamping stations in the same mold, and can also realize the two functions of removing the punching waste and ejecting the workpiece from the lower mold 3 at the same time.

[0039] Further, the width of the waste cleaning part 14 can be increased, and more stamping sites can be formed between the upper die 1 and the lower die 3. These stamping sites can be various stamping processes such as punching and bending. The punching sites 5 that need to be cleaned need to be relatively close to the side wall of the mold to facilitate waste removal. Through the setting of the laterally movable waste cleaning part 14, the two functions of demoulding and waste cleaning can be completed, and multiple stations can be set for synchronous stamping, which increases the flexibility of post-forming processing of small workpieces during the stamping process.

[0040] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A workpiece stamping die, characterized in that: It comprises an upper die and a lower die, the lower die comprises a punching hole, a waste clearing mechanism is arranged at the bottom of the lower die, a transmission structure is arranged between the waste clearing mechanism and the upper die, when the upper die rises or falls, it acts on the transmission structure and makes it move laterally, and the waste clearing mechanism moves laterally with the transmission structure to clear the punching waste.

2. The workpiece stamping die according to claim 1, characterized in that: The waste cleaning mechanism includes a waste cleaning portion that cooperates with the transmission structure to perform horizontal movement and a waste cleaning space connected to the bottom of the punching hole, and the waste cleaning space at least transversely penetrates one side wall of the lower mold; the transmission structure causes the waste cleaning portion to move toward one side of the punching hole, and when it moves to the extreme position, the outer end of the waste cleaning portion is flush with the side wall of the waste cleaning space or extends out of the side wall of the waste cleaning space.

3. The workpiece stamping die according to claim 2, characterized in that: The transmission structure includes a transmission rod fixedly connected to the upper mold and a guide assembly arranged at the bottom of the transmission rod, the guide assembly includes a vertically arranged guide part and a transversely arranged guide block, the guide block is fixedly connected to the waste cleaning part, and the top of the guide part is fixedly connected to the bottom of the transmission rod; the transmission structure also includes a reset member acting on the guide block.

4. The workpiece stamping die according to claim 3, characterized in that: A loading space for moving the strip material is formed in the middle of the top of the lower mold, and the transmission rod is located outside the loading space; a through hole is provided at the corresponding position of the lower mold to allow the bottom end of the transmission rod to pass through; the lower mold is provided with a guide space on the side of the waste cleaning space, and the guide assembly acts in the guide space, and an avoidance groove is opened between the guide space and the waste cleaning space, and an extension rod is fixedly provided on the side of the waste cleaning part, and the extension rod passes through the avoidance groove and is fixedly connected to the guide block.

5. The workpiece stamping die according to claim 3, characterized in that: The reset member acts on the guide block so that the inclined surface of the guide block and the guide part are in close contact with each other to form a guide. When the upper mold is lowered to close the mold, the guide part is located above the top end of the inclined surface of the guide block. When the guide part is lowered, the corresponding guide part moves toward the waste cleaning side.

6. The workpiece stamping die according to claim 5, characterized in that: The guide portion is extended toward the moving direction of removing the waste material so that the guide portion and the inner side of the top of the inclined surface of the guide block are abutted against each other.

7. The workpiece stamping die according to claim 3, characterized in that: The reset member acts on the guide block so that the inclined surface of the guide block and the guide part are in close contact with each other to form a guide; when the upper mold is lowered to close the mold, the guide part is located below the top end of the inclined surface of the guide block, and when the guide part is lowered, the guide part moves toward the side away from the waste cleaning accordingly.

8. The workpiece stamping die according to claim 2, characterized in that: The lower die also includes a stamping cavity, a demolding rod is slidably arranged at the bottom of the stamping cavity, and the bottom of the demolding rod interacts with the waste cleaning part; in an initial state and a mold closing state, the thickness of the waste cleaning part corresponding to the demolding rod is smaller than the thickness at other positions, so that the top of the demolding rod does not protrude from the stamping cavity; when demolding, the upper die rises, and the waste cleaning part is actuated to raise the demolding rod.

Images