Punching device special for automobile engine support

Abstract

The utility model discloses a special punching device for an automobile engine support and belongs to the technical field of automobile part machining. The side hole clamping leather cleaning device solves the problem that side hole clamping leather of an existing automobile engine support is difficult to clean. Comprising a top hole punching assembly, a side hole punching assembly, a lower die plate and a workpiece placing assembly, one ends of a plurality of return needles of the top hole punching assembly are fixedly connected to the lower surface of an elastic plate, the other ends of the return needles penetrate through a middle die plate to be connected to the upper end face of a material blocking plate, and a plurality of upper punching needles are fixedly connected to the middle die plate; the punching ends of a plurality of upper punching needles are slidably connected into the striker plate in the vertical direction, a side sliding block of the side hole punching assembly is slidably connected to the lower die plate through a sliding block guide rail, a lower punch of the workpiece containing assembly is fixedly connected to a lower punch base plate, and the lower punch base plate is fixedly connected to the lower die plate. According to the utility model, the problem that the skin is too thick in the casting process of the automobile engine bracket can be solved, the production efficiency is improved, and the casting rejection rate of the automobile engine bracket is reduced.

Description

Technical Field

[0001] The utility model relates to a special punching device for an automobile engine bracket, belonging to the technical field of automobile parts processing. Background Art

[0002] The automotive engine bracket is an L-shaped product manufactured through extrusion. The casting mold utilizes a side hydraulic slide and an auxiliary pressurizing mechanism to cast the bracket. During the casting process, the side hydraulic slide with two side holes allows molten aluminum to enter the mold. The flow rate and volume of the molten aluminum are difficult to control. Furthermore, the slide's movement is perpendicular to the bracket's release direction, and the bracket is relatively large. Long-term use of the mold leads to mold aging, ultimately resulting in excessively thick side hole inserts and difficulty cleaning, significantly impacting production efficiency. Utility Model Content

[0003] The utility model aims to solve the problem that the side hole of an automobile engine bracket is too thick and difficult to clean, and further provides a special punching device for the automobile engine bracket.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] The camshaft is connected to the upper mold base and the lower mold base by a spring, and the camshaft is connected to the lower mold base by a spring. The camshaft is connected to the lower mold base by a spring. The camshaft is connected to the lower mold base by a spring. The camshaft is connected to the lower mold base by a spring. The camshaft is connected to the lower mold base by a spring.

[0006] The side hole punching assembly includes a cylinder, a side slider, a slider guide and a side punch needle. The side slider is slidably connected to the lower template through the slider guide. The extended end of the cylinder is fixedly connected to the side slider. The side slider away from the cylinder is fixedly connected to the side punch needle. The upper slider is fixedly connected to the lower surface of the middle template.

[0007] The workpiece placement assembly includes a lower punch and a lower punch pad. The lower punch is fixedly connected to the lower punch pad, and the lower punch pad is fixedly connected to the lower template. The surface of the lower punch in contact with the engine bracket is provided with a contoured fixing surface.

[0008] Furthermore, the top hole punching assembly also includes multiple upper mold feet, multiple limit columns and multiple first guide columns. The multiple upper mold feet with guide grooves are fixedly connected between the upper template and the middle template, and the corresponding middle template is provided with guide holes below the guide grooves. The multiple limit columns are fixedly connected to the lower template, and the top end of each limit column is fixedly connected to the first guide column. The guide groove and guide hole are slidably connected to the first guide column.

[0009] Furthermore, a movable long rod is fixedly connected to the middle template along the vertical direction, and a travel switch is fixedly connected to the upper surface of the lower template corresponding to the movable long rod.

[0010] Furthermore, the lower template is fixedly connected to a workpiece support.

[0011] Furthermore, the blade plate is connected to the lower surface of the middle template through a blade fixing frame bolt.

[0012] Furthermore, the lower end of the lower mold plate is fixedly connected to a plurality of lower mold feet.

[0013] Furthermore, a wear-resistant block is provided between the slider guide rail and the lower template.

[0014] Furthermore, a guide sleeve is provided between the guide groove and the guide hole.

[0015] Furthermore, a third guide column is provided inside each spring.

[0016] Furthermore, the engine bracket is cleaned by the side impact needle through the push of the upper slider to the side slider.

[0017] Compared with the prior art, the present invention has the following effects:

[0018] The utility model solves the problem of excessively thick skin during the casting process of the automobile engine bracket by using the top hole punching assembly and the side hole punching assembly. The skin is cleaned by the upper punching needle and the side punching needle, which reduces the difficulty of manual cleaning and further improves production efficiency.

[0019] The lower punch of the special punching device for automobile engine bracket of the utility model is provided with a contoured fixing surface, which can better adapt to the shape of the automobile engine bracket, improve the placement stability, and thus make the side hole punching assembly and the top hole punching assembly clean the skin accurately, thereby effectively improving the cleaning efficiency;

[0020] The workpiece placement assembly, top hole punching assembly, and side hole punching assembly of the special punching device for the automobile engine bracket of the utility model can press the product surface to be more closely fitted with the contoured fixing surface during the skin cleaning process of the engine bracket, thereby effectively controlling the deformation of the product, realizing product shaping, and greatly reducing the casting scrap rate of the automobile engine bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the first three-dimensional structure of a punching device specifically designed for an automobile engine bracket;

[0022] Figure 2 A second three-dimensional structural diagram of a punching device specifically designed for an automobile engine bracket;

[0023] Figure 3 This is the front view of the punching device for automobile engine bracket;

[0024] Figure 4 This is a top view of the lower template of the punching device specifically for automobile engine brackets;

[0025] Figure 5 This is a bottom view of the middle template of the punching device for automobile engine brackets;

[0026] Figure 6 This is a front view of the middle and upper templates of a punching device specifically designed for an automobile engine bracket.

[0027] In the figure, 1 is the upper template; 2 is the second guide post; 3 is the middle template; 4 is the spring plate; 5 is the spring; 6 is the return pin; 7 is the material stop plate; 8 is the upper punch pin; 9 is the upper slider; 10 is the side slider; 11 is the slider guide; 12 is the lower template; 13 is the side punch pin; 14 is the lower punch; 15 is the lower punch pad; 16 is the upper die foot; 17 is the limit post; 18 is the first guide post; 19 is the third guide post; 20 is the wear-resistant block; 21 is the moving long rod; 22 is the travel switch; 23 is the workpiece support; 24 is the knife edge fixing frame; 25 is the knife edge plate; 26 is the lower die foot; 27 is the guide sleeve; 28 is the cylinder. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features therein can be combined with each other in the absence of conflict, and the embodiments described are only part of the embodiments of the present invention, not all of the embodiments.

[0029] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0030] Referring to the drawings in the specification, this embodiment is described. A special punching device for an automobile engine bracket includes a top hole punching assembly, a side hole punching assembly, a lower template 12 and a workpiece placement assembly. The top hole punching assembly includes an upper template 1, multiple springs, a spring plate 4, a middle template 3, multiple upper punching needles 8, multiple return needles 6, multiple second guide pillars 2, a baffle plate 7 and an upper slider 9. The two ends of the multiple second guide pillars 2 are respectively fixedly connected to the upper template 1 and the middle template 3. The spring plate 4 is slidably connected to the multiple second guide pillars 2, and the two ends of the multiple springs are respectively fixedly connected between the upper template 1 and the spring plate 4. One end of the multiple return needles 6 is fixedly connected to the lower surface of the spring plate 4, and the other end of the multiple return needles 6 passes through the middle template 3 and is connected to the upper end surface of the baffle plate 7. The multiple upper punching needles 8 are fixedly connected to the middle template 3, and the punching ends of the multiple upper punching needles 8 are slidably connected in the baffle plate 7 along the vertical direction.

[0031] The side hole punching assembly includes a cylinder 28, a side slider 10, a slider guide 11 and a side punching needle 13. The side slider 10 is slidably connected to the lower template 12 through the slider guide 11. The extended end of the cylinder 28 is fixedly connected to the side slider 10. The side of the side slider 10 away from the cylinder 28 is fixedly connected to the side punching needle 13. The upper slider 9 is fixedly connected to the lower surface of the middle template 3.

[0032] The workpiece placement assembly includes a lower punch 14 and a lower punch pad 15. The lower punch 14 is fixedly connected to the lower punch pad 15. The lower punch pad 15 is fixedly connected to the lower template 12. The surface of the lower punch 14 in contact with the engine bracket is provided with a contoured fixing surface.

[0033] The special punching device for automobile engine bracket of the present invention solves the problem of too thick skin during the casting process of automobile engine bracket through the top hole punching assembly and the side hole punching assembly. Specifically, the upper punch needle 8 and the side punch needle 13 are determined according to the number of holes required to be punched in the engine bracket, and are connected to the lifting device through the upper template 1 to realize the rising and falling of the top hole punching assembly, and the cleaning of the skin of the top hole of the engine bracket is realized by the lowering of the top hole punching assembly, and the cleaning of the skin of the side hole of the engine bracket is realized by pushing the upper slider 9 to the side slider 10, which reduces the difficulty of manual cleaning and further improves the production efficiency; the lower punch head 14 of the present invention is provided with a profiling fixing surface, which can better adapt to the shape of the engine bracket, improve the placement stability, and thus make the side hole punching assembly and the top hole punching assembly clean the skin accurately, thereby effectively improving the cleaning efficiency; the workpiece placement assembly, the top hole punching assembly, and the side hole punching assembly can press the product surface to be more in line with the profiling fixing surface during the cleaning process of the skin of the engine bracket, thereby effectively controlling the deformation of the product, realizing product shaping, and greatly reducing the casting scrap rate of the automobile engine bracket.

[0034] The top hole punching assembly also includes a plurality of upper die feet 16, a plurality of limiting posts 17 and a plurality of first guide posts 18. The plurality of upper die feet 16 with guide grooves are fixedly connected between the upper template 1 and the middle template 3. A guide hole is provided on the corresponding middle template 3 below the guide groove. The plurality of limiting posts 17 are fixedly connected to the lower template 12. The top end of each limiting post 17 is fixedly connected to the first guide post 18. The guide groove and the guide hole are slidably connected to the first guide post 18. The limiting post 17 limits the top hole punching assembly. When the upper end face of the limiting post 17 contacts the lower surface of the middle template 3, it is the maximum stroke of the top hole punching assembly. Through the cooperation of the guide groove, the guide hole and the first guide post 18, the accuracy of the top hole punching assembly's descent process is improved, and the accuracy of the cooperation between the top hole punching assembly and the workpiece placement assembly is further ensured, thereby achieving the accuracy of the top hole punching assembly in cleaning the automobile engine jacket.

[0035] A movable rod 21 is vertically fixedly connected to the middle template 3. A travel switch 22 is fixedly connected to the upper surface of the lower template 12 corresponding to the movable rod 21. Specifically, the travel switch 22 controls the extension and retraction of the protruding end of the cylinder 28. When the top hole punching assembly descends, the movable rod 21 descends synchronously. When the movable rod 21 reaches the position of the lower template 12, the movable rod 21 triggers the travel switch 22, which controls the extension of the protruding end of the cylinder 28, thereby pushing the side slider 10 to move. The side punch pin 13 on the side slider 10 contacts the vehicle engine bracket.

[0036] The lower template 12 is fixedly connected to the workpiece support 23. Specifically, when the engine bracket has a support leg, the workpiece support 23 is set according to the position of the support leg, and the workpiece support 23 supports the support leg of the engine bracket, thereby achieving good contact between the cylinder 28 engine bracket and the anti-shape fixing surface of the lower punch 14, thereby improving the accuracy of cleaning the skin.

[0037] The blade plate 25 is bolted to the lower surface of the middle template 3 via the blade fixing bracket 24. Specifically, the engagement between the blade plate 25 and the edge of the lower punch 14 removes burrs from the side edges of the automobile engine bracket. When the retaining plate 7 descends with the lifting device and contacts the automobile engine bracket, the retaining plate 7 and the contoured fixing surface secure and clamp the engine bracket. The middle template 3 of the top hole punching assembly continues to descend with the lifting device, driving the blade plate 25 further downward. The blade plate 25 and the edge of the lower punch 14 shear off burrs on the edge of the engine bracket.

[0038] The lower end of the lower mold plate is fixedly connected to a plurality of lower mold legs 26. The lower mold legs 26 provide storage space for the scraps and burrs removed by the punching device for automobile engine brackets, preventing the scraps and burrs from accumulating on the upper surface of the lower mold plate 12, thereby preventing the scraps from obstructing the movement of the side slider 10 or reducing the accuracy and reliability of the device.

[0039] Each spring is provided with a third guide post 19. Specifically, the length of the third guide post 19 is less than the length of the spring after compression. The third guide post 19 can prevent the spring from being deflected during compression, thereby ensuring the accuracy of the travel of the baffle plate 7.

[0040] A wear-resistant block 20 is provided between the slider guide rail 11 and the lower template 12. The wear-resistant block 20 reduces the wear on the lower template 12 during the movement of the side slider 10.

[0041] A guide sleeve 27 is provided between the guide groove and the guide hole. The provision of the guide sleeve 27 can improve the accuracy of the movement of the first guide post 18 between the guide groove and the guide hole, and at the same time, can reduce the contact of the guide post with the guide groove and the guide hole during movement, thereby reducing wear.

[0042] The side punch 13 cleans the engine bracket by pushing the side slider 10 with the upper slider 9. Specifically, the cylinder 28 pushes the side slider 10 until the side punch 13 contacts the surface of the engine bracket's jacket. The upper slider 9 is lowered along with the lifting device so that the lower end inclined surface of the upper slider 9 contacts the upper end inclined surface of the side slider 10, thereby pushing the side slider 10 to complete the jacket cleaning, reducing the difficulty of manual cleaning and further improving production efficiency.

[0043] The utility model is a special punching device for automobile engine bracket, and its specific working steps are as follows:

[0044] The engine bracket is placed on the lower punch 14 and accurately fits it with the contoured fixed surface. At the same time, the support legs of the engine bracket are set on the workpiece bracket 23. The first guide column 18 of the top hole punching assembly is controlled by the lifting device to move downward along the guide groove and the guide hole. During the movement, the moving long rod 21 triggers the travel switch 22, which in turn extends the protruding end of the cylinder 28 and pushes the side slider 10 to move until the side punch needle 13 contacts the leather surface on the side of the engine bracket and stops. At the same time, the top hole punching assembly continues to move downward with the lifting device, and the baffle plate 7 contacts the upper surface of the engine bracket. The engine bracket is fixed and clamped by the baffle plate 7 and the contoured fixed surface. The top hole punching assembly continues to move downward with the lifting device. The baffle plate 7 cannot continue to move downward due to the obstruction of the engine bracket, and thus pushes back the return pin 6 and the spring plate 4 to compress the spring 5. The middle template 3 of the top hole punching assembly continues to move downward with the lifting device, so that the upper punch needle 8 protrudes from the surface of the baffle plate 7 and punches into the upper surface of the engine bracket to clean the skin. At the same time, the edge of the knife plate 25 and the edge of the lower punch 14 shear the burrs on the edge of the engine bracket. The lower end inclined surface of the upper slider 9 contacts the upper end inclined surface of the side slider 10, and pushes the side slider 10 to continue to move toward the engine bracket as the lifting device descends, thereby completing the cleaning of the side skin of the engine bracket.

[0045] The top hole punching rises with the lifting device assembly, the baffle plate 7 is out of contact with the workpiece, the spring returns to the extended state, the spring plate 4 is reset, and then the baffle plate 7 is reset, the moving long rod 21 rises and is out of contact with the travel switch 22, and the extended end of the cylinder 28 returns to its position to pull the side slider 10 to reset.

[0046] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A special punching device for automobile engine bracket, characterized by: The invention comprises a top hole punching assembly, a side hole punching assembly, a lower template (12) and a workpiece placement assembly, wherein the top hole punching assembly comprises an upper template (1), a plurality of springs (5), a spring plate (4), a middle template (3), a plurality of upper punching needles (8), a plurality of return needles (6), a plurality of second guide pillars (2), a baffle plate (7) and an upper slider (9), wherein the two ends of the plurality of second guide pillars (2) are respectively fixedly connected to the upper template (1) and the middle template (3), the spring plate (4) is slidably connected to the plurality of second guide pillars (2), the two ends of the plurality of springs (5) are respectively fixedly connected between the upper template (1) and the spring plate (4), one end of the plurality of return needles (6) is fixedly connected to the lower surface of the spring plate (4), the other end of the plurality of return needles (6) passes through the middle template (3) and is connected to the upper end surface of the baffle plate (7), the plurality of upper punching needles (8) are fixedly connected to the middle template (3), and the punching ends of the plurality of upper punching needles (8) are slidably connected in the baffle plate (7) along the vertical direction. The side hole punching assembly includes a cylinder (28), a side slider (10), a slider guide rail (11) and a side punch needle (13), wherein the side slider (10) is slidably connected to the lower template (12) through the slider guide rail (11), the extended end of the cylinder (28) is fixedly connected to the side slider (10), the side of the side slider (10) away from the cylinder (28) is fixedly connected to the side punch needle (13), and the upper slider (9) is fixedly connected to the lower surface of the middle template (3). The workpiece placement assembly comprises a lower punch (14) and a lower punch pad (15), wherein the lower punch (14) is fixedly connected to the lower punch pad (15), and the lower punch pad (15) is fixedly connected to the lower template (12), and a contoured fixing surface is provided on the surface of the lower punch (14) that contacts the engine bracket.

2. The punching device for automobile engine bracket according to claim 1, characterized in that: The top hole punching assembly further comprises a plurality of upper die feet (16), a plurality of limiting columns (17) and a plurality of first guide columns (18); the plurality of upper die feet (16) with guide grooves are fixedly connected between the upper template (1) and the middle template (3); a guide hole is provided on the corresponding middle template (3) below the guide groove; the plurality of limiting columns (17) are fixedly connected to the lower template (12); the top end of each limiting column (17) is fixedly connected to the first guide column (18); the guide groove and the guide hole are slidably connected to the first guide column (18).

3. The punching device for automobile engine bracket according to claim 1, characterized in that: The middle template (3) is fixedly connected to a movable long rod (21) in a vertical direction, and the upper surface of the lower template (12) corresponding to the movable long rod (21) is fixedly connected to a travel switch (22).

4. The punching device for automobile engine bracket according to claim 1, characterized in that: The lower template (12) is fixedly connected to a workpiece support (23).

5. The punching device for automobile engine bracket according to claim 4, characterized in that: The knife edge plate (25) is bolted to the lower surface of the middle template (3) via the knife edge fixing frame (24).

6. The punching device for automobile engine bracket according to claim 1, characterized in that: The lower end of the lower mold plate (12) is fixedly connected to a plurality of lower mold feet (26).

7. The punching device for automobile engine bracket according to claim 1, characterized in that: A wear-resistant block (20) is provided between the slider guide rail (11) and the lower template (12).

8. The special punching device for automobile engine bracket according to claim 2, characterized in that: A guide sleeve (27) is provided between the guide groove and the guide hole.

9. The punching device for automobile engine bracket according to claim 1, characterized in that: A third guide column (19) is provided inside each spring (5).

10. The special punching device for automobile engine bracket according to claim 1, characterized in that: The upper slider (9) pushes the side slider (10) to enable the side punch (13) to clean the engine bracket.

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