Positioning tool for automobile die and positioning method of positioning tool

Abstract

The invention belongs to the technical field of polishing equipment, and particularly relates to a positioning tool for an automobile die and a positioning method.The positioning tool comprises a base, an upper die base and a lower die base, the lower die base is fixed to the upper surface of the base, the upper die base is located above the lower die base, and the lower die base is fixed to the upper surface of the base; the upper die base is connected to the supporting frame and connected with the supporting frame in an up-down sliding mode, a lifting driving mechanism is connected between the upper die base and the supporting frame, the supporting frame is fixed to the upper surface of the base, and a stamping die head is arranged on the lower surface of the upper die base. A cavity is formed in the position, corresponding to the stamping die head, of the upper surface of the lower die base, an adjusting and fixing mechanism is arranged on the periphery of the cavity of the upper surface of the lower die base, and a positioning mechanism is arranged on the periphery of the stamping die head of the lower surface of the upper die base. The positioning tool is convenient to operate, high in positioning precision, time-saving and labor-saving.

Description

Technical Field

[0001] The present invention belongs to the technical field of molds, and particularly relates to a positioning tooling for automotive molds and a positioning method thereof. Background Art

[0002] Automotive molds, in a narrow sense, refer to the general term for all stamping molds for stamping parts on an automobile body, that is, "automobile body stamping molds". In automobile production, stamping of automotive molds is an important step, and the stamping device often needs to work in cooperation with a positioning device for the mold. In the prior art, the adjustment and positioning of the sheet material are mostly manually operated by workers. This positioning method not only has low work efficiency but also has large errors, thus affecting the machining accuracy. Summary of the Invention

[0003] The purpose of the present invention is to provide a positioning tooling for automotive molds and a positioning method thereof in view of the deficiencies of the prior art. The positioning tooling is convenient to operate, has high positioning accuracy, and saves time and effort.

[0004] The purpose of the present invention is achieved as follows: A positioning tooling for automotive molds includes a base, an upper die base, and a lower die base. The lower die base is fixed on the upper surface of the base. The upper die base is located above the lower die base. The upper die base is connected to a support frame and is slidably connected to the support frame in the up and down direction. An elevating drive mechanism is connected between the upper die base and the support frame. The support frame is fixed on the upper surface of the base. A stamping die head is provided on the lower surface of the upper die base. A cavity is provided at a position corresponding to the stamping die head on the upper surface of the lower die base. An adjusting and fixing mechanism is provided around the cavity on the upper surface of the lower die base. A positioning mechanism is provided around the stamping die head on the lower surface of the upper die base.

[0005] Further, the adjusting and fixing mechanism includes two positioning clamping plates symmetrically arranged on the left and right sides of the lower die base. An adjusting drive mechanism is connected to the positioning clamping plates. The adjusting drive mechanism pushes the positioning clamping plates to slide left and right relative to the lower die base. A positioning block is provided behind the cavity on the upper surface of the lower die base. When the sheet material is placed on the lower die base, one end of the sheet material abuts against the positioning block. Then, the position of the positioning clamping plates is adjusted by the adjusting drive mechanism to adjust the position of the sheet material in the left and right directions and to perform preliminary clamping and fixing on the sheet material.

[0006] Further, the adjusting drive mechanism includes a sleeve fixed on the outer side surface of the positioning clamping plate. An adjusting screw is arranged in the sleeve. The adjusting screw is connected to the sleeve by a thread. The adjusting screw is rotatably arranged on a support seat on the upper surface of the lower die base. The two adjusting screws are connected to a rotating motor through a synchronization mechanism. The rotating motor drives the two adjusting screws to rotate synchronously through the synchronization mechanism, so that the two positioning clamping plates move synchronously relative to the base towards the center of the lower die base or away from the center of the lower die base.

[0007] Further, the synchronization mechanism includes a driven bevel gear fixed to the end of the adjusting screw. An active bevel gear is meshed with the driven bevel gear. The active bevel gear is fixed on a vertical rotating shaft. The vertical rotating shaft is rotatably connected to the lower die base. A worm gear is fixedly connected to the vertical shaft. A worm is meshed with the worm gear. The two worms are respectively connected to the two output shafts of a double-output shaft motor. The worms are arranged below the lower die base and are rotatably connected to the lower die base. The double-output motor drives the two worms to rotate synchronously, and then drives the two adjusting screws to rotate synchronously through worm and worm gear transmission and bevel gear transmission in sequence.

[0008] Further, the positioning mechanism includes a positioning plate connected to the lower surface of the upper die base. Punching holes are arranged at positions corresponding to the punching die heads on the positioning plate. The size of the punching holes is larger than that of the punching die heads. The positioning plate and the upper die base are connected through an elastic telescopic mechanism. When the elastic telescopic mechanism is at its maximum length, the positioning plate is located below the punching die head. When the elastic telescopic mechanism is at its minimum length, the positioning plate is located above the punching die head. During the process that the upper die base drives the positioning plate and the punching die head to move downward, the positioning plate first contacts the sheet material, and then compresses the elastic telescopic mechanism. The sheet material is gradually pressed by the positioning plate. During this process, the punching die head on the lower surface of the upper die base passes through the punching holes on the positioning plate to punch the sheet material. After punching, the upper die base drives the punching die head and the positioning plate to move upward, gradually unlocking the pressing and fixing of the sheet material by the positioning plate. The positioning plate can further fix the sheet material to prevent the sheet material from moving during the punching process.

[0009] Further, the elastic telescopic mechanism includes a guide shaft. A limit block is arranged at the top end of the guide shaft. The limit block is slidably arranged up and down in a guide hole on the lower surface of the upper die base. A limit plate is arranged at the bottom end of the guide hole. The guide shaft can slide up and down relative to the limit plate. The bottom end of the guide shaft is fixedly connected to the upper surface of the positioning plate. A compression spring is arranged above the limit block in the guide hole. After the positioning plate contacts the sheet material, the guide shaft and the limit block squeeze the compression spring upward along the axis of the guide hole. After the positioning plate leaves the surface of the sheet material, under the action of the gravity of the positioning plate and the compression spring, the guide shaft and the limit block move downward along the axis of the guide hole until the limit block moves to the position of the limit plate.

[0010] Further, the elastic telescopic mechanism is an adjustable elastic telescopic mechanism, and the buffer stroke of the elastic telescopic mechanism can be adjusted as needed.

[0011] Further, the limit block includes a support block and an adjustment block. The support block is arranged below the adjustment block. The adjustment block and the support block are slidably arranged up and down in the guide hole and cannot rotate relative to the inner side wall of the guide hole. The guide shaft is connected to the support block by a thread, and the top end of the guide shaft passes through the support block and is rotatably connected to the bottom end surface of the adjustment block. The compression spring is arranged above the adjustment block. The guide shaft is rotatably connected to the positioning plate. By rotating the guide shaft, the distance between the support block and the adjustment block can be adjusted, so as to achieve the purpose of adjusting the buffering stroke of the elastic telescopic mechanism.

[0012] A positioning method for an automobile mold includes the following steps: Step 1, as required, rotate the guide shaft to adjust the length of the elastic telescopic mechanism; Step 2, place the plate to be processed on the lower die base, and push the front end face of the plate to the limit plate behind the lower die base; Step 3, adjust the positions of the two positioning clamping plates through the adjustment driving mechanism to adjust and clamp the plate on the lower die base in the left-right direction; Step 4, drive the upper die base and the positioning mechanism to move towards the lower die base by the lifting driving mechanism. Through the positioning mechanism, the plate can be further pressed and positioned. Then, the upper die base drives the stamping die head to continue moving towards the plate on the upper surface of the lower die base to stamp the plate.

[0013] Advantages of the present invention: 1. The present invention is provided with an adjustment and fixing mechanism around the lower die base. Through the adjustment and fixing mechanism, the position of the plate on the upper surface of the lower die base can be initially positioned in the front-back direction, adjusted in the left-right direction, and clamped and fixed in the horizontal direction. This can reduce the degree of manual intervention, ensure the consistency of each positioning, improve the product quality, and at the same time improve the production work efficiency and processing accuracy.

[0014] 2. The present invention is provided with a positioning mechanism on the lower surface of the upper die base. Through the positioning mechanism, the plate on the lower die base can be pressed and fixed in the vertical direction, further preventing the plate from skewing during the stamping operation. Description of the drawings

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is a structural schematic diagram of a positioning tooling for an automobile mold of the present invention.

[0017] Description of the reference numerals in the drawings: 1. Base; 2. Upper die holder; 3. Lower die holder; 4. Support frame; 5. Lifting drive mechanism; 7. Stamping die head; 8. Cavity; 9. Positioning clamping plate; 10. Positioning block; 11. Adjusting screw; 12. Driven bevel gear; 13. Driving bevel gear; 14. Vertical rotating shaft; 15. Worm gear; 16. Worm; 17. Positioning plate; 18. Stamping hole; 19. Adjusting block; 20. Support block; 21. Guide shaft; 22. Guide hole; 23. Compression spring. Detailed implementation manners

[0018] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation of the present invention.

[0019] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0020] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0021] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments.

[0023] In one embodiment of the present invention, as Figure 1 shown, a positioning tooling for automotive molds includes a base 1, an upper die base 2, and a lower die base 3. The lower die base 3 is fixed on the upper surface of the base 1. The upper die base 2 is located above the lower die base 3. The upper die base 2 is connected to a support frame 4 and is slidably connected to the support frame 4 in the vertical direction. A lifting drive mechanism 5 is connected between the upper die base 2 and the support frame 4. The support frame 4 is fixed on the upper surface of the base 1. A stamping die head 7 is provided on the lower surface of the upper die base 2. A cavity 8 is provided at a position corresponding to the stamping die head 7 on the upper surface of the lower die base 3. An adjustment and fixing mechanism is provided around the cavity 8 on the upper surface of the lower die base 3. A positioning mechanism is provided around the stamping die head 7 on the lower surface of the upper die base 2.

[0024] In one embodiment of the present invention, the lifting drive mechanism 5 adopts a hydraulic rod.

[0025] In one embodiment of the present invention, as Figure 1 shown, the adjustment and fixing mechanism includes two positioning clamping plates 9 symmetrically arranged on the left and right sides of the lower die base 3. An adjustment drive mechanism is connected to the positioning clamping plates 9. The adjustment drive mechanism pushes the positioning clamping plates 9 to slide left and right relative to the lower die base 3. A positioning block 10 is provided behind the cavity 8 on the upper surface of the lower die base 3. When placing a sheet on the lower die base 3, one end of the sheet abuts against the positioning block 10, and then the position of the positioning clamping plates 9 is adjusted by the adjustment drive mechanism to adjust the position of the sheet in the left and right directions and preliminarily clamp and fix the sheet.

[0026] In one embodiment of the present invention, as Figure 1 shown, the adjustment drive mechanism includes a sleeve fixed on the outer side surface of the positioning clamping plate 9. An adjustment screw 11 is arranged in the sleeve. The adjustment screw 11 is connected to the sleeve by a thread. The adjustment screw 11 is rotatably arranged on a support seat on the upper surface of the lower die base 3. The two adjustment screws 11 are connected to a rotary motor through a synchronization mechanism. The rotary motor drives the two adjustment screws 11 to rotate synchronously through the synchronization mechanism, so that the two positioning clamping plates 9 move synchronously relative to the base 1 in the direction towards the center of the lower die base 3 or away from the center of the lower die base 3.

[0027] In one embodiment of the present invention, as Figure 1As shown in the figure, the synchronization mechanism includes a driven bevel gear 12 fixed to the end of the adjusting screw 11. A driving bevel gear 13 is meshed with the driven bevel gear 12. The driving bevel gear 13 is fixed on a vertical rotating shaft 14. The vertical rotating shaft 14 is rotatably connected to the lower die base 3. A worm gear 15 is fixedly connected to the vertical shaft. A worm 16 is meshed with the worm gear 15. The two worms 16 are respectively connected to the two output shafts of a double-output shaft motor. The worm 16 is arranged below the lower die base 3 and is rotatably connected to the lower die base 3. The double-output motor drives the two worms 16 to rotate synchronously, and then drives the two adjusting screws 11 to rotate synchronously through the transmission of the worm gear 15 and the worm 16 and the bevel gear transmission in sequence.

[0028] In one embodiment of the present invention, as Figure 1 shown, the positioning mechanism includes a positioning plate 17 connected to the lower surface of the upper die base 2. A punching hole 18 is provided at a position corresponding to the punching die head 7 on the positioning plate 17. The size of the punching hole 18 is larger than the size of the punching die head 7. The positioning plate 17 is connected to the upper die base 2 through an elastic telescopic mechanism. When the elastic telescopic mechanism is at its maximum length, the positioning plate 17 is located below the punching die head 7. When the elastic telescopic mechanism is at its minimum length, the positioning plate 17 is located above the punching die head 7. During the process that the upper die base 2 drives the positioning plate 17 and the punching die head 7 to move downward, the positioning plate 17 first contacts the sheet material, and then compresses the elastic telescopic mechanism. The sheet material is gradually pressed by the positioning plate 17. During this process, the punching die head 7 on the lower surface of the upper die base 2 passes through the punching hole 18 on the positioning plate 17 to punch the sheet material. After punching, the upper die base 2 drives the punching die head 7 and the positioning plate 17 to move upward, gradually unlocking the pressing and fixing of the sheet material by the positioning plate 17. The positioning plate 17 can further fix the sheet material to prevent the sheet material from moving during the punching process.

[0029] In one embodiment of the present invention, as Figure 1 shown, the elastic telescopic mechanism includes a guide shaft 21. A limit block is provided at the top end of the guide shaft 21. The limit block is slidably arranged in a guide hole 22 on the lower surface of the upper die base 2. A limit plate is provided at the bottom end of the guide hole 22. The guide shaft 21 can slide up and down relative to the limit plate. The bottom end of the guide shaft 21 is fixedly connected to the upper surface of the positioning plate 17. A compression spring 23 is provided above the limit block in the guide hole 22. After the positioning plate 17 contacts the sheet material, the guide shaft 21 and the limit block squeeze the compression spring 23 upward along the axis of the guide hole 22. After the positioning plate 17 leaves the surface of the sheet material, under the action of the gravity of the positioning plate 17 and the compression spring 23, the guide shaft 21 and the limit block move downward along the axis of the guide hole 22 until the limit block moves to the limit plate.

[0030] In one embodiment of the present invention, asFigure 1 As shown, the elastic telescopic mechanism is an adjustable elastic telescopic mechanism, and the buffer stroke of the elastic telescopic mechanism can be adjusted as needed.

[0031] In one embodiment of the present invention, Figure 1 As shown, the limit block includes a support block 20 and an adjusting block 19, the support block 20 is arranged below the adjusting block 19, the adjusting block 19 and the support block 20 are slidably arranged in the guide hole 22 up and down, and the adjusting block 19 and the inner wall of the guide hole 22 cannot rotate relative to each other, the guide shaft 21 and the support block 20 are connected by threads, and the top end of the guide shaft 21 passes through the support block 20 and is rotatably connected to the bottom end surface of the adjusting block 19, the compression spring 23 is arranged above the adjusting block 19, the guide shaft 21 is rotatably connected to the positioning plate 17, the guide shaft 21 is rotated, and the distance between the support block 20 and the adjusting block 19 is adjusted, so as to achieve the purpose of adjusting the buffer stroke of the elastic telescopic mechanism.

[0032] A method for positioning an automobile mold comprises the following steps: Step 1, as needed, rotate the guide shaft 21 to adjust the length of the elastic telescopic mechanism; Step 2, placing the plate to be processed on the lower die base 3, and pushing the front end surface of the plate to the limit plate behind the lower die base 3; Step 3, adjusting the positions of the two positioning clamps 9 by adjusting the driving mechanism to adjust and clamp the plate on the lower die base 3 in the left and right directions; Step 4, the lifting drive mechanism 5 drives the upper die base 2 and the positioning mechanism to move toward the lower die base 3. The plate can be further pressed and positioned by the positioning mechanism. Then the upper die base 2 drives the punching die head 7 to continue to move toward the plate on the upper surface of the lower die base 3 to punch the plate.

[0033] The above are only preferred embodiments of the present invention, and only specifically describe the technical principles of the present invention. These descriptions are only for explaining the principles of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations here, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention, and other specific implementations of the present invention that can be associated with by technicians in this field without creative labor, should be included in the scope of protection of the present invention.

Claims

1. A positioning tool for an automobile mold, comprising a base (1), an upper mold base (2) and a lower mold base (3), wherein the lower mold base (3) is fixed to the upper surface of the base (1), the upper mold base (2) is located above the lower mold base (3), the upper mold base (2) is connected to a support frame (4) and is slidably connected to the support frame (4) up and down, a lifting drive mechanism (5) is connected between the upper mold base (2) and the support frame (4), the support frame (4) is fixed to the upper surface of the base (1), a punching die (7) is arranged on the lower surface of the upper mold base (2), and a cavity (8) is arranged on the upper surface of the lower mold base (3) at a position corresponding to the punching die (7), characterized in that: An adjusting and fixing mechanism is provided around the upper surface cavity (8) of the lower die seat (3), and a positioning mechanism is provided around the lower surface punching die head (7) of the upper die seat (2).

2. The easy-to-demold stamping die for automobile parts according to claim 1, characterized in that: The adjusting and fixing mechanism comprises two positioning clamping plates (9) symmetrically arranged on the left and right sides of the lower die base (3); the positioning clamping plates (9) are connected to an adjusting driving mechanism, and the adjusting driving mechanism pushes the positioning clamping plates (9) to slide left and right relative to the lower die base (3); and a positioning block (10) is arranged behind the upper surface cavity (8) of the lower die base (3).

3. The easy-to-demold stamping die for automobile parts according to claim 2, characterized in that: The adjustment drive mechanism comprises a sleeve fixed on the outer surface of the positioning clamp (9), an adjustment screw (11) is arranged in the sleeve, the adjustment screw (11) and the sleeve are connected by a thread, the adjustment screw (11) is rotatably arranged on a support seat on the upper surface of the lower mold base (3), and the two adjustment screws (11) are connected to the rotating motor through a synchronization mechanism.

4. The easy-to-demold stamping die for automobile parts according to claim 3, characterized in that: The synchronization mechanism comprises a driven bevel gear (12) fixed to the end of the adjusting screw (11), the driven bevel gear (12) being meshedly connected with a driving bevel gear (13), the driving bevel gear (13) being fixed to a vertical rotating shaft (14), the vertical rotating shaft (14) being rotationally connected to the lower die base (3), a worm wheel (15) being fixedly connected to the vertical shaft, a worm gear (16) being meshedly connected to the worm wheel (15), two worm gears (16) being respectively connected to two output shafts of the double output shaft motor, and the worm gear (16) being arranged below the lower die base (3) and being rotationally connected to the lower die base (3).

5. The easy-to-demold stamping die for automobile parts according to claim 1, characterized in that: The positioning mechanism comprises a positioning plate (17) connected to the lower surface of the upper die seat (2); a punching hole (18) is provided on the positioning plate (17) at a position corresponding to the punching die head (7); the size of the punching hole (18) is larger than the size of the punching die head (7); the positioning plate (17) and the upper die seat (2) are connected via an elastic telescopic mechanism; when the elastic telescopic mechanism is at a maximum length, the positioning plate (17) is located below the punching die head (7); when the elastic telescopic mechanism is at a minimum length, the positioning plate (17) is located above the punching die head (7).

6. The easy-to-demold stamping die for automobile parts according to claim 5, characterized in that: The elastic telescopic mechanism comprises a guide shaft (21), a limit block is arranged at the top end of the guide shaft (21), the limit block is arranged in a guide hole (22) on the lower surface of the upper mold base (2) so as to slide up and down, a limit plate is arranged at the bottom end of the guide hole (22), the guide shaft (21) can slide up and down relative to the limit plate, the bottom end of the guide shaft (21) is fixedly connected to the upper surface of the positioning plate (17), and a compression spring (23) is arranged above the limit block in the guide hole (22).

7. The easy-to-demold stamping die for automobile parts according to claim 6, characterized in that: The elastic telescopic mechanism is an adjustable elastic telescopic mechanism.

8. The easy-to-demold stamping die for automobile parts according to claim 7, characterized in that: The limit block comprises a support block (20) and an adjustment block (19); the support block (20) is arranged below the adjustment block (19); the adjustment block (19) and the support block (20) are arranged in a guide hole (22) to slide up and down, and the adjustment block (19) and the inner wall of the guide hole (22) cannot rotate relative to each other; the guide shaft (21) and the support block (20) are connected by a thread, and the top end of the guide shaft (21) passes through the support block (20) and is rotatably connected to the bottom end surface of the adjustment block (19); the compression spring (23) is arranged above the adjustment block (19), and the guide shaft (21) is rotatably connected to the positioning plate (17).

9. A method for positioning an automobile mold, characterized in that: The following steps are involved: Step 1, rotating the guide shaft (21) to adjust the length of the elastic telescopic mechanism as required; Step 2, placing the plate to be processed on the lower die base (3), and pushing the front end surface of the plate to the limit plate behind the lower die base (3); Step 3, adjusting the positions of the two positioning clamps (9) by adjusting the driving mechanism, so as to adjust and clamp the plate on the lower die base (3) in the left-right direction; Step 4, the lifting drive mechanism (5) drives the upper die base (2) and the positioning mechanism to move in the direction of the lower die base (3), and the plate can be further pressed and positioned by the positioning mechanism. Then, the upper die base (2) drives the punching die head (7) to continue to move the plate on the upper surface of the lower die base (3) to punch the plate.

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