A machining device for sheet metal parts

Abstract

The application belongs to the technical field of plate processing, and discloses a mechanical processing device for sheet metal parts, which comprises a base, a gear box and two baffles fixedly connected to the upper surface of the base, two threaded rods rotatably installed in the middle of the baffles, and a bottom plate fixedly connected to the base and rotatably installed in the middle of the threaded rods. The distance between the sliding upper dies is the distance of stamping and bending, the driving motor is operated to drive the front threaded rod and the spur gear to rotate, the front spur gear drives the rear meshing spur gear to rotate, thereby driving the rear threaded rod to rotate, and the front and rear threaded rods rotate in opposite directions, so that the lower dies on both sides of the bottom plate move to both sides respectively, the distance between the lower dies is adjusted to an appropriate length according to the distance between the upper dies and the thickness of the stamped plate, thereby solving the problem that the stamping head needs to be replaced multiple times when stamping workpieces of different specifications of sheet metal parts, and the process is relatively complicated.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of plate processing, and particularly relates to a mechanical processing device for sheet metal parts. BACKGROUND

[0002] Sheet metal has the characteristics of light weight, high strength, electrical conductivity (can be used for electromagnetic shielding), low cost, good mass production performance, etc., and has been widely used in the fields of electronic appliances, communication, automobile industry, medical devices, etc. For example, in computer cases, mobile phones and MP3s, sheet metal is an essential component. With the increasingly wide application of sheet metal, the design of sheet metal parts has become an important part of the product development process.

[0003] In the sheet metal part processing process, the sizes of the same type of workpiece required are different, and the sheet metal part is prone to elastic deformation during the processing process and needs to be further processed. In the traditional sheet metal part stamping process, the size of the sheet metal part stamped into a workpiece is relatively single, and the types are less. When stamping different size sheet metal part workpieces, the stamping head needs to be replaced multiple times, and the process is relatively complicated. Moreover, the existing stamping equipment cannot reduce the elastic strain force generated during the stamping process of the sheet metal part, cannot reduce the probability of elastic deformation of the sheet metal part after bending, and leads to the decline of the quality of the sheet metal part workpiece, affecting the subsequent use. SUMMARY

[0004] The purpose of the present application is to provide a mechanical processing device for sheet metal parts to solve the problems raised in the background.

[0005] In order to achieve the above object, the present application provides the following technical scheme: A machining device for sheet metal parts, comprising a base, the upper surface of the base is fixedly connected with a gear box and two baffles, the middle part of the baffle is rotatably installed with two threaded rods, the middle part of the threaded rod is rotatably installed with a bottom plate fixedly connected with the base, both sides of the bottom plate are provided with a lower mold threadedly connected with the threaded rod, the front and rear sides of the lower mold are fixedly connected with a limiting mechanism, the left end of the threaded rod is fixedly installed with a straight gear, the left end of the threaded rod on the front side is fixedly connected with a driving motor fixedly connected with the base, the front and rear sides of the lower mold on the left side are provided with a sliding groove, the inside of the sliding groove is slidably connected with a fixed length mechanism, the front and rear surfaces of the base are provided with a rectangular groove, the inside of the rectangular groove is slidably connected with a plurality of supporting plates, the top of the supporting plate is fixedly connected with a connecting rod, the middle part of the connecting rod is rotatably connected with a rotating guide roller, the rear part of the upper surface of the base is fixedly connected with an L-shaped plate, the middle part of the L-shaped plate is fixedly installed with a telescopic rod, the front end of the telescopic rod is fixedly connected with a push block, the top of the L-shaped plate is fixedly connected with two hydraulic pressure rods, the bottom end of the two hydraulic pressure rods is fixedly connected with a connecting plate, the middle part of the connecting plate is fixedly connected with an intermediate block, both sides of the connecting plate are slidably connected with an upper mold, the front side of the upper mold is slidably connected with a pressing block.

[0006] Preferably, the limiting mechanism comprises a limiting shell, the inside of the limiting shell is fixedly connected with a return spring, the upper end of the return spring is fixedly connected with a limiting rod, the limiting rod is slidably connected with the limiting shell, the outer side of the limiting shell is provided with a notch.

[0007] Preferably, the fixed length mechanism comprises a shell, the inside of the shell is provided with an installation cavity, the inner side of the installation cavity is fixedly installed with an electromagnet, the outer side of the installation cavity is slidably connected with a permanent magnet, the right side of the permanent magnet is fixedly connected with a limiting plate, the lower surface of the shell is fixedly connected with a fixed plate, the middle part of the fixed plate is threadedly connected with a fixed rod.

[0008] Preferably, the thread rotation directions of the left and right sides of the threaded rod are opposite, the thread rotation directions of the front and rear sides of the threaded rod are opposite.

[0009] Preferably, the front and rear straight gears are meshedly connected, and the straight gears are located in the inside of the gear box.

[0010] Preferably, the bottom of the push block is flush with the upper surface of the bottom plate, and the bottom plate is matched with the lower molds on both sides.

[0011] Preferably, the outer side of the limiting rod is provided with a protrusion, the inner side of the pressing block is flush with the outer side of the limiting rod, and the inner side of the limiting rod is flush with the edge of the bottom plate.

[0012] The beneficial effects of the present application are as follows:

[0013] 1. This invention uses sliding upper dies, with the distance between them equal to the bending distance to be stamped. A drive motor operates, rotating the front threaded rod and spur gear. The rotation of the front spur gear drives the rear meshing spur gear, which in turn rotates the rear threaded rod. The front and rear threaded rods rotate in opposite directions, causing the lower dies on both sides of the base plate to move to opposite sides. The distance between the lower dies is adjusted to a suitable length based on the distance between the upper dies and the thickness of the sheet metal to be stamped. This solves the problem of the cumbersome process of repeatedly changing stamping heads when stamping sheet metal parts of different specifications.

[0014] 2. This invention utilizes a hydraulic pressure rod to push the connecting plate and the intermediate block downwards, thereby stamping the center of the sheet metal. This causes the center of the sheet metal to be concave downwards, while the sides of the sheet metal move towards the center. The drive motor operates, causing the threaded rod to rotate, which moves the lower dies on both sides towards the center, clamping the sheet metal and ensuring a tight fit between the sheet metal and the upper die. This also reduces the probability of the sheet metal springing back due to elastic stress. This solves the problem that existing stamping equipment cannot reduce the elastic strain force generated in sheet metal parts during stamping, and cannot reduce the probability of elastic deformation after bending, leading to a decrease in the quality of the sheet metal parts and affecting their subsequent use.

[0015] 3. This invention uses a sliding shell, which is adjusted to a suitable position according to the length of the stamped sheet. The fixing rod is tightened to fix the position of the shell. At the same time, the electromagnet is energized to generate a magnetic field that attracts the permanent magnet, thereby driving the permanent magnet and the limiting plate to move inward, thus protruding from the surface of the shell. When the sheet is between the limiting rods, the limiting rods will limit the front and rear positions of the sheet. The sheet continues to move, and stops moving when the left end of the sheet contacts the limiting plate. This completes the positioning of the sheet before stamping, preventing the sheet from sliding during the stamping process and affecting the stamping quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the appearance of the present invention;

[0017] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 For the present invention Figure 1 Enlarged view of point B in the middle;

[0019] Figure 4 This is a half-sectional schematic diagram of the gearbox of the present invention;

[0020] Figure 5 This is a schematic diagram of the length limiting mechanism of the present invention;

[0021] Figure 6 Figure 2 is a half-split schematic view of the length-limiting mechanism of the present application;

[0022] Figure 7 Figure 3 is a split view of the L-shaped plate of the present application.

[0023] In the figure: 1, base; 2, gear box; 3, baffle; 4, threaded rod; 5, bottom plate; 6, lower mold; 7, limiting mechanism; 71, limiting shell; 72, return spring; 73, limiting rod; 8, spur gear; 9, driving motor; 10, sliding groove; 11, length-limiting mechanism; 111, shell; 112, mounting cavity; 113, electromagnet; 114, permanent magnet; 115, limiting plate; 116, fixed plate; 117, fixed rod; 12, rectangular groove; 13, support plate; 14, connecting rod; 15, rotating guide roller; 16, L-shaped plate; 17, telescopic rod; 18, push block; 19, hydraulic pressure rod; 20, connecting plate; 21, intermediate block; 22, upper mold; 23, pressing block. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0025] As Figures 1 to 7As shown, the embodiment of the present application provides a kind of machining device for sheet metal part, including base 1, the upper surface of base 1 is fixedly connected with gear box 2 and two baffle 3, two threaded rods 4 are rotatably installed in the middle part of baffle 3, threaded rod 4 is rotatably installed with the fixed connection of bottom plate 5 in the middle part, the both sides of bottom plate 5 are provided with the lower mould 6 of screw connection with threaded rod 4, the front and back sides of lower mould 6 are fixedly connected with limiting mechanism 7, the left end of threaded rod 4 is fixedly installed with straight gear 8, the left end side of front threaded rod 4 is fixedly connected with the fixed connection of driving motor 9 with base 1, the front and back sides of left lower mould 6 are all provided with sliding slot 10, the inside of sliding slot 10 is all slidably connected with length limiting mechanism 11, the front and back surfaces of base 1 are all provided with rectangular slot 12, the inside of rectangular slot 12 is slidably connected with multiple support plates 13, the top of support plate 13 is fixedly connected with connecting rod 14, the middle part of connecting rod 14 is rotatably connected with rotating guide roller 15, the rear part of the upper surface of base 1 is fixedly connected with L-shaped plate 16, the middle part of L-shaped plate 16 is fixedly installed with telescopic rod 17, the front end of telescopic rod 17 is fixedly connected with push block 18, the upper surface of push block 18 is flush with the upper surface of lower mould 6, the top of L-shaped plate 16 is fixedly connected with two hydraulic pressure rods 19, the bottom end of two hydraulic pressure rods 19 is fixedly connected with connecting plate 20, the middle part of connecting plate 20 is fixedly connected with middle block 21, the both sides of connecting plate 20 are slidably connected with upper mould 22, the front side of upper mould 22 is slidably connected with pressing block 23, its role is, the work of hydraulic pressure rod 19, push connecting plate 20 and middle block 21 move downwards, so that the middle part of plate is punched, so that the middle part of plate is concave, while the both sides of plate move to the middle part, driving motor 9 works, drives threaded rod 4 to rotate, so that the both sides of lower mould 6 move to the middle part, and plate is clamped, so that plate is tightly adhered to upper mould 22, while the probability of rebound of plate due to elastic stress is less, so as to solve the problem that existing stamping equipment cannot reduce the elastic strain force generated during stamping of sheet metal part, cannot reduce the probability of elastic deformation of sheet metal part after bending, leading to the quality of sheet metal part workpiece is reduced, affect subsequent use.

[0026] The limiting mechanism 7 comprises a limiting shell 71, the inside of the limiting shell 71 is fixedly connected with a return spring 72, the upper end of the return spring 72 is fixedly connected with a limiting rod 73, the limiting rod 73 is slidingly connected with the limiting shell 71, the outer side of the limiting shell 71 is provided with a notch, the length limiting mechanism 11 comprises a shell 111, the inside of the shell 111 is provided with a mounting cavity 112, the inner side of the mounting cavity 112 is fixedly installed with an electromagnet 113, the outer side of the mounting cavity 112 is slidingly connected with a permanent magnet 114, the right side of the permanent magnet 114 is fixedly connected with a limiting plate 115, the lower surface of the shell 111 is fixedly connected with a fixed plate 116, the middle part of the fixed plate 116 is threadedly connected with a fixed rod 117, and the action is that the upper die 22 is slid, the distance between the upper die 22 is the distance of stamping and bending, the driving motor 9 works, drives the front threaded rod 4 and the spur gear 8 to rotate, the front spur gear 8 drives the rear meshing spur gear 8 to rotate, thereby driving the rear threaded rod 4 to rotate, the front and rear threaded rods 4 rotate in opposite directions, thereby moving the lower die 6 on both sides of the bottom plate 5 to two sides respectively, the distance between the lower die 6 is adjusted to a proper length according to the distance between the upper die 22 and the thickness of the stamping plate, thereby solving the problem that the stamping head needs to be replaced for many times when stamping metal parts of different specifications.

[0027] The threaded rods 4 on the left and right sides are opposite in screw direction, the threaded rods 4 on the front and rear sides are opposite in screw direction, the front and rear spur gears 8 are meshingly connected, and the spur gears 8 are located in the inside of the gear box 2, that is, the threaded rod 4 parts between the left baffle 3 and the left lower die 6 and the threaded rod 4 parts between the right baffle 3 and the right lower die 6 are opposite in screw direction, and the parts between the left baffle 3 and the left lower die 6 of the front threaded rod 4 and the parts between the left baffle 3 and the left lower die 6 of the rear threaded rod 4 are opposite in screw direction, and the action is that the driving motor 9 works, drives the front threaded rod 4 and the spur gear 8 to rotate, the front spur gear 8 drives the rear meshing spur gear 8 to rotate, thereby driving the rear threaded rod 4 to rotate, the front and rear threaded rods 4 rotate in opposite directions, thereby moving the lower die 6 on both sides of the bottom plate 5 to two sides respectively, and the distance between the lower die 6 is adjusted to a proper length according to the distance between the upper die 22 and the thickness of the stamping plate.

[0028] The bottom of the push block 18 is flush with the upper surface of the bottom plate 5, the bottom plate 5 is matched with the lower molds 6 on both sides, the outer side of the limiting rod 73 is provided with a protrusion, the inner side of the pressing block 23 is flush with the outer side of the limiting rod 73, and the inner side of the limiting rod 73 is flush with the edge of the bottom plate 5. When the plate is located between the limiting rods 73, the limiting rods 73 limit the front and rear positions of the plate. During the stamping process, the pressing block 23 contacts the protrusion of the limiting rod 73 and drives the limiting rod 73 to move downward. The downward moving limiting rod 73 extrudes the return spring 72 to slide into the inside of the limiting shell 71. After the stamping is completed, the lower mold 6 is reset, the hydraulic pressure rod 19 drives the connecting plate 20 and the upper mold 22 to move upward and reset. The upper surface of the limiting rod 73 is located inside the limiting shell 71, and the plane of the pressing block 23 above the upper surface of the limiting rod 73 is just higher than the upper surface of the plate. The telescopic rod 17 pushes the plate to move forward, and the bottom surface of the plate is located on the upper surface of the front limiting shell 71. The hydraulic pressure rod 19 continues to reset upward, and the upper surface of the limiting rod 73 slowly lifts the bottom surface of the plate until the return spring 72 drives the limiting rod 73 to reset to the uppermost position. When the hydraulic pressure rod 19 is reset, the telescopic rod 17 pushes the stamped plate out of the upper surface of the limiting rod 73, and then resets.

[0029] Working principle:

[0030] Before using the equipment, manually slide the upper mold 22 to adjust the distance between them to the distance of the stamping and bending; drive the motor 9 to work, drive the front threaded rod 4 and the straight gear 8 to rotate, the front straight gear 8 drives the rear meshing straight gear 8 to rotate, thereby driving the rear threaded rod 4 to rotate, and the front and rear threaded rods 4 rotate in opposite directions, thereby moving the lower molds 6 on both sides of the bottom plate 5 to both sides, respectively. According to the distance between the upper molds 22 and the thickness of the stamped plate, adjust the distance between the lower molds 6 to the appropriate length, and then stop the motor 9 from working; slide the pressing block 23 so that it is located directly above the limiting rod 73 on the same side; slide the support plate 13 so that it is located between the lower molds 6 and the baffle 3 at an appropriate position; slide the shell 111 to adjust to an appropriate position according to the length of the stamped plate, and tighten the fixing rod 117 to fix the position of the shell 111. At the same time, the electromagnet 113 is electrified to generate a magnetic field that attracts the permanent magnet 114, thereby driving the permanent magnet 114 and the limiting plate 115 to move inward, thereby protruding from the surface of the shell 111;

[0031] When the device is in use, the cut-off plate will be slowly moved from the left side of the baffle 3 by the existing transmission device, and when passing above the rotating guide roller 15, it will support the plate. The plate will drive the rotating guide roller 15 to rotate during the transmission process, and move to the upper surface of the lower die 6. During the movement process, when the plate is located between the limiting rods 73, the limiting rods 73 will limit the front and rear positions of the plate. The plate continues to move, and when the left end of the plate contacts the limiting plate 115, the movement stops. Then the electromagnet 113 generates a magnetic field repelling the permanent magnet 114, pushing the limiting plate 115 to the outermost side. After the cut-off plate contacts the limiting plate 115, it will no longer be moved, and thus the cut-off plate moves to the target stamping position.

[0032] The hydraulic pressure rod 19 works, pushing the connecting plate 20 and the middle block 21 to move downward, thereby stamping the middle part of the plate, making the middle part of the plate concave downward, and the two sides of the plate move to the middle part. During the stamping process, the pressing block 23 will first contact the protrusion of the limiting rod 73 and drive the limiting rod 73 to move downward. The downward moving limiting rod 73 will extrude the return spring 72 to slide into the inside of the limiting shell 71. When the lower surface of the upper die 22 is at the lowest position, the limiting rod 73 is completely located in the inside of the limiting shell 71. At this time, the driving motor 9 works, driving the threaded rod 4 to rotate, making the left and right lower dies 6 move to the middle, clamping the plate, and making the plate tightly adhere to the upper die 22, and reducing the probability of plate rebound due to elastic stress.

[0033] After stamping is completed, the lower die 6 is reset, the hydraulic pressure rod 19 drives the connecting plate 20 and the upper die 22 to move upward and reset. When the upper surface of the limiting rod 73 is located in the inside of the limiting shell 71, and the pressing block 23 above the upper surface of the limiting rod 73 is just higher than the upper surface of the plate, the telescopic rod 17 can be actively lengthened and shortened. The telescopic rod 17 actively lengthens to drive the push block 18 to push the plate to move forward, so that the bottom surface of the plate is located on the upper surface of the front limiting shell 71. The hydraulic pressure rod 19 continues to reset upward, and the upper surface of the limiting rod 73 will slowly lift the bottom surface of the plate to an inclined state until the return spring 72 pushes the limiting rod 73 to reset to the uppermost position. During the process, the telescopic rod 17 cooperates to increase the inclination of the plate. When the hydraulic pressure rod 19 is reset, the telescopic rod 17 drives the push block 18 to push the stamped plate out of the upper surface of the limiting rod 73. During the process, the part of the plate exposed in front of the lower die 6 will increase. When the center of gravity of the plate is located in front of the lower die 6, the plate will fall in front of the base 1, and then reset.

[0034] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the scope of the present application is not limited to these specific embodiments.

[0035] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the principles and spirits of the application, and it is intended that the scope of the application be limited solely by the scope of the appended claims and the equivalents thereof.

Claims

1. A machining device for sheet metal parts, comprising a base (1), the upper surface of the base (1) is fixedly connected with a gear box (2) and two baffles (3), characterized in that: The baffle (3) is rotationally installed with two threaded rods (4) in the middle, the middle of the threaded rod (4) is rotationally installed with the bottom plate (5) fixedly connected with the base (1), both sides of the bottom plate (5) are provided with the lower mold (6) threadedly connected with the threaded rod (4), the front and rear sides of the lower mold (6) are fixedly connected with the limiting mechanism (7), the left end of the threaded rod (4) is fixedly installed with the straight gear (8), the left end of the threaded rod (4) on the front side is fixedly connected with the driving motor (9) fixedly connected with the base (1), the front and rear sides of the lower mold (6) on the left side are provided with the sliding groove (10), the inside of the sliding groove (10) is slidingly connected with the length limiting mechanism (11), the front and rear surfaces of the base (1) are provided with the rectangular groove (12), the inside of the rectangular groove (12) is slidingly connected with a plurality of supporting plates (13), the top of the supporting plate (13) is fixedly connected with the connecting rod (14), the middle of the connecting rod (14) is rotationally connected with the rotating guide roller (15), the rear part of the upper surface of the base (1) is fixedly connected with the L-shaped plate (16), the middle of the L-shaped plate (16) is fixedly installed with the telescopic rod (17), the front end of the telescopic rod (17) is fixedly connected with the push block (18), the top of the L-shaped plate (16) is fixedly connected with two hydraulic pressure rods (19), the bottom ends of the two hydraulic pressure rods (19) are fixedly connected with the connecting plate (20), the middle of the connecting plate (20) is fixedly connected with the middle block (21), both sides of the connecting plate (20) are slidingly connected with the upper mold (22), the front side of the upper mold (22) is slidingly connected with the pressing block (23). The limiting mechanism (7) comprises a limiting shell (71), the inside of the limiting shell (71) is fixedly connected with a return spring (72), the upper end of the return spring (72) is fixedly connected with a limiting rod (73), the limiting rod (73) is slidingly connected with the limiting shell (71), the outer side of the limiting shell (71) is provided with a notch; The outer side of the limiting rod (73) is provided with a protrusion, the inner side of the pressing block (23) is flush with the outer side of the limiting rod (73), and the inner side of the limiting rod (73) is flush with the edge of the bottom plate (5).

2. The device for machining sheet metal parts according to claim 1, characterized in that: The length limiting mechanism (11) comprises a shell (111), the inside of the shell (111) is provided with a mounting cavity (112), the inside of the mounting cavity (112) is fixedly installed with an electromagnet (113), the outside of the mounting cavity (112) is slidingly connected with a permanent magnet (114), the right side of the permanent magnet (114) is fixedly connected with a limiting plate (115), the lower surface of the shell (111) is fixedly connected with a fixed plate (116), and the middle of the fixed plate (116) is screwedly connected with a fixed rod (117).

3. The device for machining sheet metal parts according to claim 1, characterized in that: The thread rotation directions of the left and right sides of the threaded rod (4) are opposite, and the thread rotation directions of the front and rear sides of the threaded rod (4) are opposite.

4. The device for machining sheet metal parts according to claim 1, characterized in that: The straight gears (8) are meshedly connected between the front and rear sides, and the straight gears (8) are located in the inside of the gear box (2).

5. The device for machining sheet metal parts according to claim 1, characterized in that: The bottom of the push block (18) is flush with the upper surface of the bottom plate (5), and the bottom plate (5) is matched with the lower molds (6) on both sides.

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