Pressurized force-amplified deceleration type pusher edge device and design method thereof

Abstract

The application discloses a kind of with pressing force increasing speed reduction formula push edge device and its design method, wherein, push edge device includes support frame, pressing mechanism and push edge mechanism;The pressing insert in the pressing mechanism has the pressing position of pressing the material product to be pushed edge plate;Push edge mechanism includes first driving mechanism, bell crank, guide rail and push edge insert structure;Bell crank is hinged with support frame, first driving mechanism and push edge insert structure respectively;First driving mechanism moves push edge insert structure along guide rail from position away from to pressing edge position by driving bell crank, and the material product is pushed edge, and push edge speed decreases and pressure increases in process;The device of the application integrates push edge mechanism and pressing mechanism, and does not need to arrange pressing mechanism separately;The application makes sheet metal produce plastic deformation, reduces springback, to improve the quality of pressing, and reaches the best product quality effect.

Description

Technical Field

[0001] This invention relates to the field of automotive body pressing equipment manufacturing technology, and in particular to a force-increasing and speed-reducing push-edge device with clamping and its design method. Background Technology

[0002] Body pressing equipment is divided into four categories: pressing molds, robotic roller pressing, simplified pressing, and special pressing machines. In some steep areas of the pressed product, the pre-pressing angle is large, making it difficult to form in one pressing step. If a special pressing machine is used, the pressing direction needs to consider the overall part pressing; the determined pressing direction may not be the most suitable for forming all areas, requiring the addition of a pre-flanging device to modify the forming direction. If a pressing mold is used, it typically involves two pressing steps. In some steep areas, to ensure the inner and outer panels fit together, two pressing steps are insufficient, requiring the addition of a pre-flanging device. Because the flanging area is relatively long, a large thrust is required, and it is inconvenient to arrange a separate clamping mechanism in terms of space. These problems urgently need to be solved. Summary of the Invention

[0003] The purpose of this invention is to provide a force-increasing and speed-reducing edge-pushing device with clamping and its design method, thereby improving the pressing quality of the assembled product. This invention develops an edge-pushing device that integrates a clamping mechanism and an edge-pushing mechanism. The edge-pushing process is fast in the early stages and slows down in the later stages, with the pushing force continuously increasing and reaching its maximum at the end of the pushing process. This causes plastic deformation of the sheet material, reducing the possibility of springback, thus improving the pressing quality. Furthermore, the position and direction of the installation device can be changed according to the product conditions to achieve a change in the forming direction, thereby achieving optimal product quality and solving the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a force-increasing and speed-reducing edge-pushing device with clamping for pushing edges of sheet metal products, comprising:

[0005] Support frame;

[0006] A pressing mechanism having a pressing insert, the pressing mechanism being hinged to a support frame, the pressing insert having a separation position for inserting the sheet metal product to be pushed or removing the sheet metal product after pushing, and a pressing position for pressing the sheet metal product to be pushed.

[0007] The pushing edge mechanism includes a first driving mechanism, a triangular crank, a guide rail, and a pushing edge insert structure. The triangular crank has a support end, an input end, and an output end. The support end is hinged to a support frame, the input end is hinged to the first driving mechanism, and the output end is hinged to the pushing edge insert structure. The guide rail is connected to the support frame, and the pushing edge insert structure can move along the guide rail.

[0008] When the clamping insert presses the sheet material to be pushed, the pushing insert structure has a distance position away from the clamping insert and a pressing position close to the clamping insert. The first driving mechanism drives the input end to rotate the triangular crank around the support frame through the support end, and the output end pushes the pushing insert structure to move along the guide rail from the distance position to the pressing position to push the sheet material. During the pushing process, the speed of the pushing insert structure gradually decreases and the pressure on the sheet material gradually increases until the pushing of the sheet material is completed.

[0009] Furthermore, the pushing mechanism includes a first pin, a second pin, a third pin, a first connecting rod, and a second connecting rod;

[0010] The first driving mechanism includes the pushing cylinder assembly, which includes a cylinder body and a telescopic rod. The cylinder body is connected to the support frame, and the end of the telescopic rod is rotatably connected to the input end via a second pin. The support end is rotatably connected to the support frame via a first pin, and the output end is rotatably connected to one end of a first connecting rod via a third pin. The other end of the first connecting rod is rotatably connected to one end of a second connecting rod via a fourth pin, and the other end of the second connecting rod is connected to the pushing insert structure.

[0011] Furthermore, this includes both the first and second directions;

[0012] The first direction is perpendicular to the second direction, wherein the line connecting the first pin and the second pin is the first connecting line, the line connecting the first pin and the third pin is the second connecting line, the line connecting the second pin and the third pin is the third connecting line, the first direction is the direction of the first connecting line, and the second direction is the direction of the third connecting line.

[0013] Furthermore, the triangular crank is equipped with a limit screw;

[0014] When the first drive mechanism drives the input end to rotate the triangular crank around the support frame to a preset position via the support end, the limiting screw abuts against the support frame.

[0015] The adjusting screw is height-adjustable, and the rotation stroke of the triangular crank can be adjusted by adjusting the height of the adjusting screw.

[0016] Furthermore, the guide rail also includes:

[0017] Two guide covers are connected to the support frame. Each guide cover has a groove, and the grooves on the two guide covers are arranged opposite to each other.

[0018] The guide rail slide includes a first guide plate and a second guide plate. The first guide plate is disposed on the lower inner wall of the groove, and the second guide plate is disposed on the upper and side inner walls of the groove.

[0019] Furthermore, the push-edge insert structure includes:

[0020] A slider that can move along a track;

[0021] A block holder, which is connected to the slider;

[0022] An edge-pushing insert is connected to the insert base and is disposed at one end of the edge-pushing insert structure near the pressing edge position. The output end pushes the edge-pushing insert structure to move along the guide rail from the far-away position to the pressing edge position, and the edge-pushing insert pushes the edge of the sheet material product.

[0023] Furthermore, the push-edge insert structure also includes a proximity switch;

[0024] The slider is equipped with a bending plate, which moves synchronously with the slider. The proximity switch detects the distance position and the pressing edge position by detecting the position of the bending plate.

[0025] Furthermore, the clamping mechanism includes:

[0026] The second support is connected to the support frame via the guide cover plate;

[0027] A flipping arm, one end of which is connected to the clamping insert, and the other end of which is hinged to the second support;

[0028] The second drive mechanism is connected to the flipping arm. The second drive mechanism drives the flipping arm to rotate along the hinge point with the second support. The clamping insert is rotated to the separation position or the clamping position by the flipping arm.

[0029] Furthermore, the clamping mechanism also includes:

[0030] A convex limiting block is connected to the second support, and a boss is provided on the upper surface of the convex limiting block;

[0031] A concave limiting block is provided with an inclined surface and a contact arc surface. The contact arc surface is provided with a groove. The inclined surface is connected to the flipping arm. The boss is embedded in the groove. The contact arc surface abuts against the upper surface of the convex limiting block.

[0032] The fifth shim is disposed between the convex limiting block and the second support, and the flipping angle of the flipping arm is adjusted by adjusting the height of the fifth shim.

[0033] On the other hand, a design method for a pressure-increasing and speed-reducing edge-pushing device is provided, used to manufacture an edge-pushing device with pressure as described in any of the above claims. The method involves setting the first direction and the second direction to be perpendicular to each other, so that the speed of the edge-pushing insert structure gradually decreases during the edge-pushing process of the sheet material, while the pressure applied to the sheet material gradually increases until the edge-pushing of the sheet material is completed. The design formula is as follows:

[0034]

[0035] In the formula,

[0036] L1 is the first connection, and L2 is the second connection;

[0037] F1 is the force output by the push-side cylinder assembly through the end of the telescopic rod;

[0038] F4 is the fourth component of F2, used as the forming force for the pushing edge of the sheet metal product by the pushing edge insert structure, wherein the fourth direction is the direction in which the pushing edge insert structure moves along the guide rail;

[0039] β is the angle between the direction of F1 and the component of F1 in the second direction;

[0040] Angle θ is the angle formed by the F2 direction and the fourth direction;

[0041] Angle α is the angle formed by the F2 direction and the third direction, where the third direction is the L2 direction.

[0042] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention provides a force-increasing and speed-reducing edge-pushing device with clamping, which integrates an edge-pushing mechanism and a clamping mechanism. It can clamp the product itself during the forming process, solving the problem of inconvenience in arranging a separate clamping mechanism in terms of space. During the edge-pushing process, the speed is fast in the early stage and slow in the later stage, and the edge-pushing force continuously increases, reaching its maximum at the end of the edge-pushing process. This causes plastic deformation of the sheet material, reduces the possibility of springback, solves the problem of a long flanging area requiring a large pushing force, and improves the pressing quality. The present invention can adjust the installation position and direction of the device according to the product condition to change the forming direction, thereby achieving the best product quality effect. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the connection structure of the force-increasing and speed-reducing push-edge device with clamping in an embodiment of the present invention;

[0044] Figure 2 This is an embodiment of the present invention. Figure 1 Enlarged schematic diagram of the structural connection of section H in the middle;

[0045] Figure 3This is a cross-sectional schematic diagram of the force-increasing and speed-reducing push-edge device with clamping in an embodiment of the present invention;

[0046] Figure 4 This is a top cross-sectional view of the force-increasing and speed-reducing pusher device with clamping in an embodiment of the present invention;

[0047] Figure 5 This is a cross-sectional schematic diagram of another force-increasing and speed-reducing push-edge device with clamping in an embodiment of the present invention;

[0048] Figure 6 This is a schematic diagram illustrating the force-increasing and speed-reducing principle of the triangular crank and push-edge insert structure in an embodiment of the present invention;

[0049] In the diagram: 1. Push-edge cylinder assembly; 2. Triangular crank; 3. First connecting rod; 4. Second connecting rod; 5. Slider; 6. Insert seat; 7. Push-edge insert; 8. First pin; 9. Second pin; 10. Third pin; 11. Fourth pin; 12. Limit screw; 13. Adjusting screw; 14. First washer; 15. Guide cover plate; 16. First guide plate; 17. Second guide plate; 35. Proximity switch; 36. Proximity switch bracket; 37. Proximity switch protection bracket; 38. Bending plate; 20. Clamping cylinder; 21. Fifth pin; 22. Tilting arm; 23. Second washer; 24. Third washer; 25. Clamping insert; 26. Sixth pin; 27. First support; 28. Second support; 29. ​​Fourth washer; 30. Fifth washer; 31. Protruding limit block; 32. Concave limit block; 39. Support frame. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0052] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0053] Please refer to the accompanying drawings. This invention provides a technical solution: a force-increasing and speed-reducing edge-pushing device with clamping for pushing sheet metal products, including a clamping mechanism, an edge-pushing mechanism, and a support frame 39; the clamping mechanism has a clamping insert 25, the clamping mechanism is hinged to the support frame 39, and the clamping insert 25 has a separation position for placing the sheet metal product to be pushed or removing the sheet metal product after pushing, and a clamping position for clamping the sheet metal product to be pushed; the edge-pushing mechanism includes a first driving mechanism, a triangular crank 2, a guide rail, and an edge-pushing insert structure; the triangular crank 2 has a support end, an input end, and an output end, the support end is hinged to the support frame 39, the input end is hinged to the first driving mechanism, and the output end is hinged to the edge-pushing insert. The block structure is hinged, the guide rail is connected to the support frame 39, and the pushing edge insert structure can move along the guide rail; when the pressing insert 25 presses the sheet material to be pushed edge, the pushing edge insert structure has a distance position away from the pressing insert 25 and a pressing edge position close to the pressing insert 25. The first driving mechanism drives the input end to make the triangular crank 2 rotate around the support frame 39 through the support end, and the output end pushes the pushing edge insert structure to move along the guide rail from the distance position to the pressing edge position to push the sheet material. During the pushing edge process, the speed of the pushing edge insert structure gradually decreases, and the pressure on the sheet material gradually increases until the pushing edge forming of the sheet material is completed.

[0054] In the above embodiments, the pushing mechanism preferably uses the pushing cylinder assembly 1 of the linear cylinder as the power source, and the pushing cylinder assembly is installed obliquely below the support frame 39; the triangular crank 2 and the pushing block structure are used for transmission to achieve force increase and speed reduction. The support end of the triangular crank 2 is connected to the support frame 39, and the input end is connected to the linear cylinder. The pushing block structure is guided by the guide rail; the guide rail is fixed above the support frame 39, and the pushing block structure moves forward under the guidance of the guide rail, thereby driving the pushing block 7 installed at the front end of the pushing block structure to push the edge. The push-edge operation, which increases force and reduces speed, is achieved by using components such as linear cylinders, triangular cranks 2, and push-edge inserts. The clamping mechanism is installed above the support frame 39 and is preferably driven by a clamping cylinder or hydraulic cylinder assembly. It is connected to the support frame 39 through the second support 28 and is rotatably connected to the tilting arm 22. The front end of the tilting arm 22 is connected to the clamping insert 25 to achieve the clamping function. The support frame 39 is roughly triangular in shape. When the cylinder drives the pressing, it can be a welded assembly. When the hydraulic cylinder presses the material, it is recommended to use an integral casting. The support frame 39 is drilled at the lower diagonal to install the push-edge cylinder assembly 1. A plate is welded or cast on the other side of the support frame 39 to install and fix the overall device.

[0055] Optionally, the pushing mechanism includes a first pin 8, a second pin 9, a third pin 10, a first connecting rod 3, and a second connecting rod 4; the first driving mechanism includes the pushing cylinder assembly 1, which includes a cylinder body and a telescopic rod. The cylinder body is connected to the support frame 39, and the end of the telescopic rod is rotatably connected to the input end via the second pin 9; the support end is rotatably connected to the support frame 39 via the first pin 8, and the output end is rotatably connected to one end of the first connecting rod 3 via the third pin 10. The other end of the first connecting rod 3 is rotatably connected to one end of the second connecting rod 4 via the fourth pin 11, and the other end of the second connecting rod 4 is connected to the pushing insert structure.

[0056] In the above embodiment, the push-side cylinder assembly 1 is installed diagonally below the support frame 39, and the output end at the front end is rotatably connected to the triangular crank 2 via the second pin 9; the triangular crank 2 is roughly a right-angled triangle in shape, and its fixed end is rotatably connected to the support frame 39 via the first pin 8, and the other end is rotatably connected to the first connecting rod 3 via the third pin 10; the first connecting rod 3 is rotatably connected to the second connecting rod 4 via the fourth pin 11; the second connecting rod 4 is fixedly connected to the slider 5; the side of the support frame 39 has triangular and semi-circular operating holes for adjusting the limit screw 12, as well as for disassembling and assembling the second pin 9, the third pin 10, and the fourth pin 11.

[0057] Optionally, it includes a first direction and a second direction; the first direction is perpendicular to the second direction, wherein the line connecting the first pin 8 and the second pin 9 is the first connecting line, the line connecting the first pin 8 and the third pin 10 is the second connecting line, the line connecting the second pin 9 and the third pin 10 is the third connecting line, the first direction is the direction of the first connecting line, and the second direction is the direction of the third connecting line.

[0058] Optionally, the triangular crank 2 is provided with a limiting screw 12; when the first drive mechanism drives the input end to rotate the triangular crank 2 around the support frame 39 to a preset position via the support end, the limiting screw 12 abuts against the support frame 39; the adjusting screw 12 is height-adjustable, and the rotation stroke of the triangular crank 2 can be adjusted by adjusting the height of the adjusting screw 12.

[0059] In the above embodiment, a limit screw 12 is provided on the upper side of the triangular crank 2, and the rotation stroke of the triangular crank 2 can be adjusted by adjusting the height of the screw.

[0060] Optionally, the guide rail further includes two guide cover plates 15 and a guide rail slide. The two guide cover plates 15 are connected to the support frame 39. The guide cover plates 15 are provided with grooves, and the grooves of the two guide cover plates 15 are arranged opposite to each other. The guide rail slide includes a first guide plate 16 and a second guide plate 17. The first guide plate 16 is disposed on the lower inner wall of the groove, and the second guide plate 17 is disposed on the upper and side inner walls of the groove.

[0061] In the above embodiment, the guide cover plate 15 is installed on the upper surface of the support frame 39 to form a concave cavity. The first guide plate 16 and the second guide plate 17 are attached to the inner side of the cavity to form a track, and the push-edge insert structure slides in the track.

[0062] Optionally, the edge-pushing insert structure includes: a slider 5, an insert seat 6, and an edge-pushing insert 7; the slider 5 can move along a track; the insert seat 6 is connected to the slider 5; the edge-pushing insert 7 is connected to the insert seat 6, and the edge-pushing insert 7 is disposed at one end of the edge-pushing insert structure near the pressing position. The output end pushes the edge-pushing insert structure to move along the guide rail from the farthest position to the pressing position, and the edge-pushing insert 7 pushes the edge of the sheet material product.

[0063] In the above embodiment, the first guide plate 16 and the second guide plate 17 are attached to the inner side of the cavity to form a track, and the slider 5 slides in the track; the insert seat 6 is installed on the slider 5, and the push-edge insert 7 is installed at the front end of the insert seat 6.

[0064] Optionally, the push-edge insert structure further includes a proximity switch 35; the slider 5 is provided with a bending plate 38, the bending plate 38 moves synchronously with the slider 5, and the proximity switch 35 detects the distance position and the pressing position by detecting the position of the bending plate 38.

[0065] In the above embodiment, the proximity switch 35 is mounted on the proximity switch bracket 36, the proximity switch bracket 36 and the proximity switch protection bracket 37 are mounted on the side of the support frame 39, the bending plate 38 is mounted on the slider 5, the movement of the slider drives the bending plate 38 to move, covering the proximity switch 35, and identifying the pressing position and the retracted far position signal of the front edge of the push edge insert 7.

[0066] Optionally, the clamping mechanism includes a second support 28, a flipping arm 22, and a second drive mechanism. The second support 28 is connected to the support frame 39 via the guide cover plate 15. One end of the flipping arm 22 is connected to the clamping insert 25, and the other end of the flipping arm 22 is hinged to the second support 28. The second drive mechanism is connected to the flipping arm 22, and the second drive mechanism drives the flipping arm 22 to rotate along the hinge point with the second support 28. The clamping insert 25 is rotated to a separation position or a clamping position via the flipping arm 22.

[0067] In the above embodiments, the second driving mechanism is preferably a pressing cylinder 20, or it can be a hydraulic cylinder assembly. The pressing cylinder 20 is mounted on the support frame 39 via the first support 27, and the front end of the cylinder is rotatably connected to the tilting arm 22 via the fifth pin 21. The front end of the tilting arm 22 is L-shaped, and the rear end forms an angle with the L-shape. A mounting boss is provided in the middle of the upper part as the connection position with the pressing cylinder 20. The tilting arm 22 is rotatably connected to the second support 28 via the sixth pin 26. The second support 28 is mounted on the guide cover plate 15. The front end of the tilting arm 22 is connected to the pressing insert 25 via the second shim 23, the third shim 24 and the fourth shim 29. The position of the pressing insert 25 can be adjusted by the second shim 23, the third shim 24 and the fourth shim 29.

[0068] Optionally, the clamping mechanism further includes a convex limiting block 31, a concave limiting block 32, and a fifth gasket 30; the convex limiting block 31 is connected to the second support 28, and a boss is provided on the upper surface of the convex limiting block 31; the concave limiting block 32 is provided with an inclined surface and a contact arc surface, the contact arc surface is provided with a groove, the inclined surface is connected to the flipping arm 22, the boss is embedded in the groove, and the contact arc surface abuts against the upper surface of the convex limiting block 31; the fifth gasket 30 is disposed between the convex limiting block 31 and the second support 28, and the flipping angle of the flipping arm 22 is adjusted by adjusting the height of the fifth gasket 30.

[0069] In the above embodiment, the convex limiting block 31 is fixed on the second support 28, and the top of the upper inclined surface of the concave limiting block 32 has an angle. It is installed on the flipping arm 22, and the lower contact arc surface is arc-shaped. As the flipping arm 22 rotates, the convex and concave limiting blocks cooperate with each other. By adjusting the fifth shim 30 between the convex limiting block 31 and the second support 28, the flipping angle of the flipping arm can be adjusted to ensure the accuracy of the pressing position.

[0070] On the other hand, a design method for a pressure-increasing and speed-reducing edge-pushing device is provided, used to manufacture an edge-pushing device with pressure as described in any of the above claims. The method involves setting the first direction and the second direction to be perpendicular to each other, so that the speed of the edge-pushing insert structure gradually decreases during the edge-pushing process of the sheet material, while the pressure applied to the sheet material gradually increases until the edge-pushing of the sheet material is completed. The design formula is as follows:

[0071]

[0072] In the formula: L1 is the first connecting line, L2 is the second connecting line; F1 is the output force of the pushing cylinder assembly 1 through the end of the telescopic rod; F4 is the component of F2 in the fourth direction, which is used for the forming force of the pushing insert structure on the sheet metal product, wherein F2 is the force of the first connecting rod 3 on the second connecting rod 4, and the fourth direction is the direction in which the pushing insert structure moves along the guide rail; β angle is the angle formed by the F1 direction and the component of F1 in the second direction; θ angle is the angle formed by the F2 direction and the fourth direction; α angle is the angle formed by the F2 direction and the third direction, wherein the third direction is the L2 direction.

[0073] In the above embodiments, the force-increasing and speed-reducing principle of the triangular crank 2 and the sliding push-edge insert structure is as follows: Figure 5 , 6 As shown in the figure, L4 is the telescopic rod of the push-side cylinder assembly 1, L5 is the first connecting rod 3, and L6 is the second connecting rod 4. The rotation of the triangular crank around the pivot pin indicates that:

[0074] F1×cosβ×L1=F3×L2——Formula (2);

[0075] F2×sinα=F3——Formula (3);

[0076] F2×cosθ=F4——Formula (4);

[0077] In the formula, F3 is the component of F2 in the direction perpendicular to L2;

[0078] Formula 1 can be derived from formulas 2, 3, and 4;

[0079] As the telescopic rod of the push-edge cylinder assembly 1 extends, the triangular crank 2 rotates counterclockwise. When the push-edge insert begins to work, angle α gradually approaches 0, angle β gradually approaches 0, and angle θ gradually approaches 0. Therefore, sinα gradually approaches 0, cosβ gradually approaches 1, and cosθ gradually approaches 1. According to the limit principle, F4 gradually approaches theoretical infinity, which is the maximum load that the structure can bear. Even considering the influence of friction, F4 is much greater than F1. The cylinder input power is constant. Based on the principle of energy conservation, the forming output power is also constant. According to P=FV, the greater the forming output force F4, the smaller the forming speed, thus achieving the purpose of increasing force and reducing speed.

[0080] The working principle and process of a force-increasing and speed-reducing edge-pushing device with clamping according to the present invention are described below with reference to specific embodiments:

[0081] With the push-side cylinder assembly 1 retracted and the clamping cylinder 20 retracted, the inner and outer panels of the product before pressing are placed in.

[0082] The pressing cylinder 20 extends, pushing the tilting arm 22 to rotate around the sixth pin 26 to the working position. The position of the pressing insert 25 can be adjusted by the second shim 23 and the third shim 24.

[0083] After the clamping insert 25 clamps the product, the push-edge cylinder assembly 1 extends and pushes the triangular crank 2 to rotate around the first pin 8 via the second pin 9.

[0084] The triangular crank pushes the first connecting rod 3 to move through the third pin 10, and the first connecting rod 3 pushes the second connecting rod 4 to move through the fourth pin 11.

[0085] Through the transmission of force and motion by the crank and connecting rod, the slider 5 decelerates and slides forward in the track, thereby pushing the insert seat 6 mounted on the slider 5 to drive the push-edge insert 7 to decelerate and slide forward to complete the push-edge forming.

[0086] The above completes one work cycle, realizing the edge-pushing production of one product.

[0087] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A force-increasing and speed-reducing edge-pushing device with clamping, used for edge pushing of sheet metal products, characterized in that, include: Support frame; A pressing mechanism having a pressing insert, the pressing mechanism being hinged to a support frame, the pressing insert having a separation position for inserting the sheet metal product to be pushed or removing the sheet metal product after pushing, and a pressing position for pressing the sheet metal product to be pushed. The pushing edge mechanism includes a first driving mechanism, a triangular crank, a guide rail, and a pushing edge insert structure. The triangular crank has a support end, an input end, and an output end. The support end is hinged to a support frame, the input end is hinged to the first driving mechanism, and the output end is hinged to the pushing edge insert structure. The guide rail is connected to the support frame, and the pushing edge insert structure can move along the guide rail. When the clamping insert presses the sheet material to be pushed, the pushing insert structure has a distance position away from the clamping insert and a pressing position close to the clamping insert. The first driving mechanism drives the input end to rotate the triangular crank around the support frame through the support end, and the output end pushes the pushing insert structure to move along the guide rail from the distance position to the pressing position to push the sheet material. During the pushing process, the speed of the pushing insert structure gradually decreases and the pressure on the sheet material gradually increases until the pushing of the sheet material is completed.

2. The force-increasing and speed-reducing push-edge device with clamping as described in claim 1, characterized in that, The pushing mechanism includes a first pin, a second pin, a third pin, a first connecting rod, and a second connecting rod; The first driving mechanism includes a pushing cylinder assembly, which includes a cylinder body and a telescopic rod. The cylinder body is connected to a support frame, and the end of the telescopic rod is rotatably connected to the input end via a second pin. The support end is rotatably connected to the support frame via a first pin, and the output end is rotatably connected to one end of a first connecting rod via a third pin. The other end of the first connecting rod is rotatably connected to one end of a second connecting rod via a fourth pin, and the other end of the second connecting rod is connected to a pushing insert structure.

3. The force-increasing and speed-reducing push-edge device with clamping as described in claim 2, characterized in that, Including the first direction and the second direction; The first direction is perpendicular to the second direction, wherein the line connecting the first pin and the second pin is the first connecting line, the line connecting the first pin and the third pin is the second connecting line, the line connecting the second pin and the third pin is the third connecting line, the first direction is the direction of the first connecting line, and the second direction is the direction of the third connecting line.

4. The force-increasing and speed-reducing push-edge device with clamping as described in claim 1, characterized in that, The triangular crank is equipped with a limit screw; When the first drive mechanism drives the input end to rotate the triangular crank around the support frame to a preset position via the support end, the limiting screw abuts against the support frame. The height of the limiting screw is adjustable, and the rotation stroke of the triangular crank can be adjusted by adjusting the height of the limiting screw.

5. The force-increasing and speed-reducing push-edge device with clamping as described in claim 1, characterized in that, The guide rail also includes: Two guide covers are connected to the support frame. Each guide cover has a groove, and the grooves on the two guide covers are arranged opposite to each other. The guide rail slide includes a first guide plate and a second guide plate. The first guide plate is disposed on the lower inner wall of the groove, and the second guide plate is disposed on the upper and side inner walls of the groove.

6. The force-increasing and speed-reducing push-edge device with clamping as described in claim 1, characterized in that, The push-edge inlay structure includes: A slider that can move along a track; A block holder, which is connected to the slider; An edge-pushing insert is connected to the insert base and is disposed at one end of the edge-pushing insert structure near the pressing edge position. The output end pushes the edge-pushing insert structure to move along the guide rail from the far-away position to the pressing edge position, and the edge-pushing insert pushes the edge of the sheet material product.

7. The force-increasing and speed-reducing push-edge device with clamping as described in claim 6, characterized in that, The push-edge insert structure also includes a proximity switch; The slider is equipped with a bending plate, which moves synchronously with the slider. The proximity switch detects the distance position and the pressing edge position by detecting the position of the bending plate.

8. The force-increasing and speed-reducing push-edge device with clamping as described in claim 5, characterized in that, The clamping mechanism includes: The second support is connected to the support frame via the guide cover plate; A flipping arm, one end of which is connected to the clamping insert, and the other end of which is hinged to the second support; The second drive mechanism is connected to the flipping arm. The second drive mechanism drives the flipping arm to rotate along the hinge point with the second support. The clamping insert is rotated to the separation position or the clamping position by the flipping arm.

9. A force-increasing and speed-reducing push-edge device with clamping as described in claim 8, characterized in that, The clamping mechanism further includes: A convex limiting block is connected to the second support, and a boss is provided on the upper surface of the convex limiting block; A concave limiting block is provided with an inclined surface and a contact arc surface. The contact arc surface is provided with a groove. The inclined surface is connected to the flipping arm. The boss is embedded in the groove. The contact arc surface abuts against the upper surface of the convex limiting block. The fifth shim is disposed between the convex limiting block and the second support, and the flipping angle of the flipping arm is adjusted by adjusting the height of the fifth shim.

10. A design method for a force-increasing and speed-reducing edge-pushing device with clamping, used to manufacture the force-increasing and speed-reducing edge-pushing device with clamping as described in claim 3, characterized in that, The first and second directions are set to be perpendicular to each other, so that the speed of the pushing block structure gradually decreases and the pressure on the sheet material gradually increases during the pushing process, until the pushing of the sheet material is completed. The design formula is: ； In the formula, L1 is the first connection, and L2 is the second connection; F1 is the force output by the push-side cylinder assembly through the end of the telescopic rod; F4 is the fourth component of F2, used as the forming force for the pushing edge of the sheet metal product by the pushing edge insert structure, wherein F2 is the force of the first connecting rod on the second connecting rod, and the fourth direction is the direction in which the pushing edge insert structure moves along the guide rail; β is the angle between the direction of F1 and the component of F1 in the second direction; Angle θ is the angle formed by the F2 direction and the fourth direction; Angle α is the angle formed by the F2 direction and the third direction, where the third direction is the L2 direction.

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