A guide groove one-step punching and forming die structure

Abstract

The present invention discloses a one-step punching and forming die structure for a guide groove, comprising an upper die and a lower die, wherein the upper die comprises an upper die seat, the upper die seat is provided with a pressure plate, a forming convex die and a punching punch located next to the forming convex die, the working end of the punching punch is lower than the working end of the forming convex die, the lower die comprises a lower die seat, the lower die seat is provided with a lower module, the lower module is provided with a lower knife block and an insert, a punching hole for the punching punch to pass through is provided between the lower knife block and the insert, the insert is located below the forming convex die, a driving mechanism is provided between the upper die seat and the lower die seat, and during the process of the punching punch punching a workpiece or after the punching punch punching a workpiece, the driving mechanism provides a downward space for the insert. The present invention can realize the forming of punching and bosses in one station, thereby improving the production cycle.

Description

Technical Field

[0001] The invention relates to a mould in the field of automobile parts production research, in particular to a guide groove one-step punching and forming mould structure. Background Art

[0002] The guide grooves and guide rails are semi-finished products obtained by rolling and bending, and then punched to get finished products. Finally, the guide grooves are welded to the A-pillars, B-pillars and C-pillars, and the guide rails are welded to the brackets. The brackets are used to protect and guide the glass lifting after installation.

[0003] After being installed on the car, there is an assembly relationship between the guide groove and the guide rail, which requires a very smooth connection and transition, otherwise the glass will be obstructed during the lifting process.

[0004] The guide groove has two features, a notch and a boss, in the transition position. Conventional molds are made into 1 mold and 2 stations. First, the guide groove is placed in the first station of the mold. After the mold is closed, a notch is punched out on the guide groove. The molds are separated, and the guide groove is placed in the second station of the mold for molding. After the mold is closed again, a boss is formed on the guide groove. Since two stations are required to mold a guide groove, the production cycle is low. Summary of the invention

[0005] The purpose of the present invention is to provide a guide groove one-step punching and forming die structure, which can complete punching and forming in one station, thereby improving the production cycle.

[0006] The solution of the present invention to solve its technical problem is: a guide groove one-step punching and forming mold structure, including an upper mold and a lower mold, the upper mold includes an upper mold base, the upper mold base is provided with a pressure plate, a forming punch and a punching punch located next to the forming punch, the working end of the punching punch is lower than the working end of the forming punch, the lower mold includes a lower mold base, the lower mold base is provided with a lower module, the lower module is provided with a lower knife block and an insert, a punching hole for the punching punch to pass through is provided between the lower knife block and the insert, the insert is located below the forming punch, a driving mechanism is provided between the upper mold base and the lower mold base, and the driving mechanism provides downward space for the insert during the process of the punching punch punching the workpiece or after the punching punch completes punching the workpiece.

[0007] The above-mentioned mold structure has at least the following beneficial effects: when the mold is closed, the punching punch punches a hole on the workpiece. During the process of the punching punch punching the workpiece or after the punching punch completes punching the workpiece, the driving mechanism provides downward space for the insert, and the forming punch drives the insert downward. The forming punch and the insert form a boss on the workpiece. Compared with the existing technology, punching and boss forming are realized in one workstation, thereby improving the production cycle.

[0008] As a further improvement of the above technical solution, the driving mechanism includes an upper die block arranged on the upper die seat and a sliding assembly arranged on the lower die seat, and the execution end of the sliding assembly extends below the insert. During the mold closing process, after the upper die block is pressed against the sliding assembly, the execution end of the sliding assembly is driven to move, making room for the insert to move downward.

[0009] As a further improvement of the above technical solution, the lower end surface of the insert is provided with a first plane close to the punching hole, a second plane away from the punching hole, and a transition plane connecting the first plane and the second plane, the second plane is higher than the first plane, and during the mold closing process, the upper mold block drives the execution end of the slider assembly to move in a direction away from the punching hole, and the contact point between the execution end of the slider assembly and the insert moves from the first plane to the second plane. During the mold closing process, the forming punch drives the insert downward, and after the upper mold block is pressed against the sliding assembly, the execution end of the sliding assembly moves along the first plane and the transition plane to the second plane, making room for the insert to move downward. In the process of making room for the downward movement, the forming punch and the insert form the workpiece.

[0010] As a further improvement of the above technical solution, the sliding assembly includes a fixed block, a slider and a slider block installed on the slider, the slider block is the execution end of the sliding assembly, an elastic reset member is provided between the fixed block and the slider, the upper part of the slider is provided with a first driving surface, and the upper mold block is provided with a second driving surface. After the mold is opened, the elastic reset member drives the slider and the slider block to reset. During the reset process, the slider block moves along the second plane and the transition plane to the first plane, and the insert is reset upward.

[0011] As a further improvement of the above technical solution, a limit assembly is provided between the punching punch and the pressure plate, and the limit assembly includes a first limit portion provided on the side of the punching punch and a second limit portion provided in the pressure plate, and the first limit portion is located above the second limit portion. The first limit portion and the second limit portion prevent the punching punch from going down beyond the stroke during the mold closing process.

[0012] As a further improvement of the above technical solution, an insert spring is provided between the insert and the lower die seat. When the mold is closed, the insert moves downward and the insert spring is compressed. During the resetting process, the slider block moves along the second plane and the transition plane to the first plane, and the insert spring drives the insert to move upward and reset.

[0013] As a further improvement of the above technical solution, the lower module is provided with a mounting hole for mounting the insert, the inner wall of the mounting hole is provided with a limit cavity, and the insert is provided with a limit block that can move up and down in the limit cavity. The height of the limit cavity is the upward and downward travel of the insert.

[0014] As a further improvement of the above technical solution, the upper end surface of the insert is provided with a molding surface, and the side surface of the insert close to the lower blade block is provided with a cutting edge surface. A punching hole is formed between the cutting edge surface and the lower blade block. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the embodiment of the present invention when the mold is opened.

[0017] Figure 2 It is a schematic structural diagram of the material pressing plate in the embodiment of the present invention when pressing material.

[0018] Figure 3 It is a schematic diagram of the structure of punching in an embodiment of the present invention.

[0019] Figure 4 It is a schematic diagram of the structure when the slider block and the insert are separated in an embodiment of the present invention.

[0020] Figure 5 It is a schematic structural diagram of a boss forming process according to an embodiment of the present invention.

[0021] Figure 6 It is a structural schematic diagram of the lower module in an embodiment of the present invention.

[0022] Figure 7 Schematic diagram of the structure of the insert in the embodiment of the present invention.

[0023] Figure 8 Schematic diagram of the structure of the slider assembly in the embodiment of the present invention. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0028] Reference Figures 1 to 8 A guide groove one-step punching and forming mold structure, comprising an upper mold and a lower mold, the upper mold comprising an upper mold base 10, the upper mold base 10 is provided with a pressure plate 13, a forming punch 14 and a punching punch 15 located next to the forming punch 14, the working end of the punching punch 15 is lower than the working end of the forming punch 14, the lower mold comprises a lower mold base 20, the lower mold base 20 is provided with a lower module 21, the lower module 21 is provided with a lower knife block 22 and an insert 24, a punching hole 23 for the punching punch 15 to pass through is provided between the lower knife block 22 and the insert 24, the insert 24 is located below the forming punch 14, a driving mechanism is provided between the upper mold base 10 and the lower mold base 20, and the driving mechanism provides downward space for the insert 24 during the process of the punching punch 15 punching the workpiece or after the punching punch 15 completes punching the workpiece. The working end of the punching punch 15 and the working end of the forming punch 14 pass through the mounting hole of the pressing plate 13 .

[0029] The forming punch 14, the punching punch 15 and the pressure plate 13 are installed on the upper die base 10 through the fixed plate 11. A spring is provided between the forming punch 14 and the fixed plate 11, a spring is provided between the punching punch 15 and the fixed plate 11, and a spring is provided between the pressure plate 13 and the fixed plate 11.

[0030] A guide block and a guide groove are installed on the lower die base 20, and the guide groove is connected with the guide cavity in the lower die block 21, so that the operator can put the workpiece into place.

[0031] A positioning assembly is provided in the lower module 21 near the insert 24. The positioning assembly positions the workpiece.

[0032] When the mold is closed, the punching punch 15 punches holes on the workpiece. During the process of the punching punch 15 punching holes on the workpiece or after the punching punch 15 completes punching holes on the workpiece, the driving mechanism provides downward space for the insert 24, and the forming punch 14 drives the insert 24 downward. The forming punch 14 and the insert 24 form a boss on the workpiece. Compared with the prior art, punching and boss forming are achieved in one workstation, thereby improving the production cycle.

[0033] The driving mechanism includes an upper die block 12 disposed on the upper die base 10 and a sliding assembly disposed on the lower die base 20, and the execution end of the sliding assembly extends below the insert 24. During the mold closing process, after the upper die block 12 is pressed against the sliding assembly, the execution end of the sliding assembly is driven to move, making room for the insert 24 to move downward.

[0034] The lower end surface of the insert 24 is provided with a first plane 25 close to the punching hole 23, a second plane 28 away from the punching hole 23, and a transition plane 27 connecting the first plane 25 and the second plane 28. The second plane 28 is higher than the first plane 25. During the mold closing process, the upper mold block 12 drives the execution end of the slider assembly to move in a direction away from the punching hole 23, and the contact point between the execution end of the slider assembly and the insert 24 moves from the first plane 25 to the second plane 28. During the mold closing process, the forming punch 14 drives the insert 24 downward. After the upper mold block 12 presses against the sliding assembly, the execution end of the sliding assembly moves along the first plane 25 and the transition plane 27 to the second plane 28, making room for the insert 24 to move downward. In the process of making room for the downward movement, the forming punch 14 and the insert 24 form the workpiece.

[0035] The sliding assembly includes a fixed block 31, a slider 30 and a slider block 29 mounted on the slider 30. The slider block 29 is the execution end of the sliding assembly. An elastic reset member 32 is provided between the fixed block 31 and the slider 30. A first driving surface 33 is provided on the upper part of the slider 30. The upper mold block 12 is provided with a second driving surface 34. The first driving surface is a plane, and the second driving surface 34 can be a plane or an arc surface. After the mold is opened, the elastic reset member 32 drives the slider 30 and the slider block 29 to reset. During the reset process, the slider block 29 moves along the second plane 28 and the transition plane 27 to the first plane 25, and the insert 24 resets upward. The elastic reset member 32 includes a reset spring and a reset guide rod. The reset guide rod passes through the fixed block 31 and the slider 30. The reset spring is sleeved on the outer surface of the reset guide rod. One end of the reset spring presses on the fixed block 31, and the other end of the reset spring presses on the slider 30. The slider 30 is positioned and guided along the horizontal movement through the guide block, the guide key and the bottom plate.

[0036] A slider plane 26 matching the transition plane 27 is provided between the upper end surface and the front side surface of the slider block 29. The slider plane 26 facilitates the slider block 29 to drive the insert 24 upward to reset, and also facilitates the insert 24 to move downward smoothly when the slider block 29 moves to the left.

[0037] A limit assembly is provided between the punching punch 15 and the press plate 13, and the limit assembly includes a first limit portion 16 provided on the side of the punching punch 15 and a second limit portion 17 provided in the press plate 13, wherein the first limit portion 16 is located above the second limit portion 17. The first limit portion 16 and the second limit portion 17 prevent the punching punch 15 from descending beyond the stroke during the mold closing process.

[0038] An insert spring 38 is provided between the insert 24 and the lower die base 20. When the die is closed, the insert 24 moves downward and the insert spring 38 is compressed. During the resetting process, the slider block 29 moves along the second plane 28 and the transition plane 27 to the first plane 25, and the insert spring 38 drives the insert 24 to move upward and reset.

[0039] The lower module 21 is provided with a mounting hole for mounting the insert 24, the inner wall of the mounting hole is provided with a limit cavity, and the insert 24 is provided with a limit block 37 that can move up and down in the limit cavity. The height of the limit cavity is the stroke of the insert 24 going up and down.

[0040] The upper end surface of the insert 24 is provided with a molding surface 35, and the molding surface 35 matches the molding punch 14. The side of the insert 24 close to the lower blade block 22 is provided with a cutting surface 36. A punching hole 23 is formed between the cutting surface 36 and the lower blade block 22.

[0041] The following is the preferred working process of the present invention:

[0042] 1. Install the upper die and lower die on the punch press, guide the workpiece through the guide block and guide groove, and position the positioning assembly in place;

[0043] 2. Start the punch press, drive the upper die to move downward, and the upper die block 12 moves downward. When the upper die moves downward 25 mm, the pressing plate 13 just contacts the workpiece and starts to press the material. The pressing plate 13 will remain stationary.

[0044] 3. The upper die continues to move downward, and the spring begins to compress. When the punching punch 15 moves downward by 6 mm, the punching is completed. The punching punch 15 will not work if it continues to move downward. At the same time, the upper die block 12 and the slider 30 begin to contact.

[0045] 4. The upper die continues to move downward, the upper die block 12, the forming punch 14 and the punching punch 15 continue to move downward, and the spring continues to compress. When the upper die moves downward another 4.5 mm, the upper die block 12 drives the slider 30 to move 4.5 mm to the left, the elastic reset member is compressed 4.5 mm, and the slider block 29 moves 4.5 mm to the left along with the slider 30. The slider block 29 supports the insert 24. At this time, the slider block 29 and the insert 24 are in a critical state of disengagement;

[0046] 5. The upper die continues to move downward by 2 mm, the upper die block 12 drives the slider 30 and the slider block 29 to move 2 mm to the left, and the slider block 29 and the insert 24 are separated by 2 mm. Since the lower die of the insert 24 has two insert springs 38 floating, the insert 24 will not move downward directly. At the same time, the forming punch 14 moves downward by 2 mm, and the forming punch 14 just contacts the product surface, and the forming process begins;

[0047] 6. When the upper die continues to move downward by 0.5 mm, the upper die block 12 and the slider 30 are in parallel contact, and the upper die block 12 continues to move downward and will not drive the slider 30. After moving downward by another 2 mm, the sliding mechanism remains unchanged, and the forming punch 14 moves downward. The die begins the forming process. When it moves to 2.5 mm, the die moves to the bottom and the forming process is completed.

[0048] 7. When the punch starts to move upward, the mold starts to move in the opposite direction. The upper mold stroke is 40mm in total, and the mold moves to the initial position.

[0049] The above is a specific description of the preferred implementation mode of the present invention, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A one-step guide groove punching and forming die structure, comprising an upper die and a lower die, characterized in that: The upper die comprises an upper die seat, the upper die seat is provided with a pressure plate, a forming punch and a punching punch located next to the forming punch, the working end of the punching punch is lower than the working end of the forming punch, the lower die comprises a lower die seat, the lower die seat is provided with a lower module, the lower module is provided with a lower knife block and an insert, a punching hole for the punching punch to pass through is provided between the lower knife block and the insert, the insert is located below the forming punch, a driving mechanism is provided between the upper die seat and the lower die seat, and the driving mechanism provides a downward space for the insert during the process of the punching punch punching the workpiece or after the punching punch completes the punching of the workpiece; The driving mechanism includes an upper die block arranged on the upper die seat and a sliding assembly arranged on the lower die seat, the execution end of the sliding assembly extends below the insert, and during the mold closing process, after the upper die block is pressed against the sliding assembly, the execution end of the sliding assembly is driven to move, thereby making room for the insert to move downward; An insert spring is arranged between the insert and the lower die seat.

2. The guide groove one-step punching and forming die structure according to claim 1, characterized in that: The lower end surface of the insert is provided with a first plane close to the punching hole, a second plane away from the punching hole and a transition plane connecting the first plane and the second plane, the second plane is higher than the first plane, and during the mold closing process, the molding punch drives the insert downward, and the upper mold blocks drive the executing end of the slider assembly to move in the direction away from the punching hole, and the contact point between the executing end of the slider assembly and the insert moves from the first plane to the second plane.

3. The guide groove one-step punching and forming die structure according to claim 1 or 2, characterized in that: The sliding assembly includes a fixed block, a slider and a slider block installed on the slider, the slider block is the execution end of the sliding assembly, an elastic reset member is provided between the fixed block and the slider, a first driving surface is provided on the upper part of the slider, and the upper die block is provided with a second driving surface.

4. The guide groove one-step punching and forming die structure according to claim 1 or 2, characterized in that: A limiting assembly is provided between the punching punch and the pressing plate, and the limiting assembly includes a first limiting portion provided on the side of the punching punch and a second limiting portion provided in the pressing plate, wherein the first limiting portion is located above the second limiting portion.

5. The guide groove one-step punching and forming die structure according to claim 1, characterized in that: The lower module is provided with a mounting hole for installing the insert, the inner wall of the mounting hole is provided with a limiting cavity, and the insert is provided with a limiting block which can move up and down in the limiting cavity.

6. The guide groove one-step punching and forming die structure according to claim 1, characterized in that: The upper end surface of the insert is provided with a molding surface, and the side surface of the insert close to the lower knife block is provided with a knife edge surface.

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