A compact rotary punching mechanism with double-sided flanging

Abstract

The invention discloses a double-sided flanging compact rotary punching mechanism, comprising an upper die seat and a lower die seat, a flanging base is provided at the front of the lower die seat, two flanging inserts are provided on the upper surface of the flanging base, each flanging insert is composed of a bottom rotating part and a top flanging part, a groove for the rotating part to be embedded and rotatably connected is symmetrically provided on the upper surface of the flanging base, a rotating shaft is extended outwardly at the front and rear ends of the rotating part, a convex column is extended outwardly at the front and rear ends of the flanging part, two convex columns at the front end of the two flanging parts and two convex columns at the rear end are respectively connected by tension springs, and a driving block that can move up and down in the vertical direction is provided on the upper die seat, and the driving block can be inserted between the two flanging parts and exert pressure on the two to make the two flanging inserts rotate outward around the rotating shaft. The advantages are that the structure is simple and compact, the mold production cost is reduced, and at the same time, the problems of material jamming during flanging and the space being relatively compact due to the common mold of the left and right parts are solved, and the automated production can be effectively met.

Description

Technical Field

[0001] The invention belongs to the field of stamping dies, and in particular relates to a double-sided flanging compact rotary stamping mechanism. Background Art

[0002] In the flanging process of stamping parts, for the parts flanging, especially the negative angle flanging, when the parts are pressed, the plate is prone to rebound, and the material jamming may occur. These problems will greatly reduce the quality of the flanging and increase the workload of the on-site commissioning personnel. CN106694660A discloses a negative angle flanging stamping mechanism for parts, which solves the above problems to a certain extent, but it has the following problems: it is necessary to design a lower die support block that can move up and down and a sliding wedge that moves left and right on the lower die seat, and it is necessary to design an upper wedge and an upper die forming block on the upper die seat. The upper wedge is used to drive the sliding wedge to move, and the upper die forming block can move left and right under the action of the upper driving block. The overall structure is complex and the mold processing cost is high. Summary of the invention

[0003] The purpose of the present invention is to provide a double-sided flanging compact rotary punching mechanism, aiming to overcome the above-mentioned deficiencies in the prior art.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: a double-sided flanging compact rotary stamping mechanism, comprising an upper die seat and a lower die seat, the front part of the lower die seat is provided with a flanging base, the upper surface of the flanging base is symmetrically connected with two flanging inserts, each of the flanging inserts is composed of a bottom rotating part and a top flanging part, the upper surface of the flanging base is symmetrically provided with grooves for the rotating part to be embedded and rotatably connected, and the front and rear ends of the rotating part extend outwardly with rotating holes for rotatably connecting with the shaft holes of the front and rear groove walls of the groove. Axis, the front and rear ends of the flanging part are respectively extended outward with convex columns, the two convex columns at the front ends of the two flanging parts and the two convex columns at the rear ends are respectively connected by tension spring 1 and tension spring 2, the side surfaces of the two flanging parts opposite to each other are both pressure inclined surfaces, and the sides of the two flanging parts facing away from the pressure inclined surfaces are flanging inclined surfaces, and a driving block which can move up and down in the vertical direction is provided on the upper mold base, and the driving block can be inserted between the two flanging parts and exert pressure on the two pressure inclined surfaces to make the two flanging inserts rotate outward around the rotating shaft.

[0005] Based on the above technical solution, the present invention can also be improved as follows.

[0006] Furthermore, the rotating part is cylindrical, the rotating shaft is arranged at the axis of both ends of the rotating part, and the flange part and the driving block are both wedge-shaped.

[0007] The beneficial effect of adopting the above-mentioned further scheme is that the cylindrical rotating part has better rotation performance, which can ensure close cooperation with the groove opened on the flange base below, so as to avoid opening a groove that is too large, which increases the cost and easily accumulates dust and materials and affects the use; the wedge-shaped flange part and drive block are convenient for setting the pressure slope, flange slope, etc.

[0008] Furthermore, the two flanged inserts are opened in an eight-shaped shape from front to back, the first tension spring is located at the front, the second tension spring is located at the rear, and the first tension spring is shorter than the second tension spring.

[0009] The beneficial effect of adopting the above further solution is that it is adapted to the shape of the flanged portion of the part to be processed.

[0010] Furthermore, lower punch inserts are respectively provided on the lower die seat adjacent to the outer sides of the two flanging inserts, and the lower punch inserts have a pressure-bearing surface corresponding to the flanging inclined surface.

[0011] The beneficial effect of adopting the above-mentioned further scheme is that the lower punch insert is detachably connected to the lower die base. Since the lower punch insert has a pressure-bearing surface that cooperates with the flange bevel, that is, it will constantly interact with the parts during production, be subjected to pressure and friction, etc., it will wear out due to long-term production and use. Therefore, it is designed to be a detachably connected insert with the lower die base to facilitate replacement after wear.

[0012] Furthermore, the lower die base is also provided with a floater for lifting the parts after the flanging is completed.

[0013] The beneficial effect of adopting the above further solution is that it is easy to lift the parts after the flanging is completed.

[0014] Furthermore, there are two floaters symmetrically arranged on both sides of the lower mold base, and the floater includes a top block and a telescopic cylinder located below the top block and connected to the top block through a telescopic end.

[0015] The beneficial effect of adopting the above further solution is that the structure is simple and the parts can be lifted up from both the left and right sides at the same time, which makes it easier to lift the parts and avoid bending and damage.

[0016] Furthermore, vertical channels are respectively provided on the left and right sides of the lower mold base for the telescopic end to pass through so as to be fixedly connected with the bottom of the top block.

[0017] The beneficial effect of adopting the above further solution is that the structure is simple and the floater and the lower die base are ensured to be compact as a whole.

[0018] Furthermore, the rotating portion and the flanging portion are integrally formed.

[0019] The beneficial effects of adopting the above further solution are convenient production and processing and good durability.

[0020] Technical effects and advantages of the present invention:

[0021] The present invention uses a driving block that can move up and down on the upper die base to simultaneously push the flanging inserts that are symmetrically arranged on the left and right sides of the lower die base to extrude and flanging the left and right sides of the part to be flanging. At the same time, tension springs 1 and 2 are provided at the front and rear ends of the flanging inserts. After the flanging is completed, as the driving block is pulled off the two flanging inserts, the two tension springs can return the flanging inserts to their original positions, thereby ensuring that the part can be pushed up smoothly without interfering with the flanging inserts, thereby avoiding material jamming. The present invention has a relatively simple and compact structure, and the mold production cost is reduced. At the same time, it solves the problem that the left and right parts share the same mold and the space is relatively compact, and can effectively meet the needs of automated production. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 An axonometric view of a double-sided flanging compact rotary punching mechanism provided by the present invention;

[0023] Figure 2 for Figure 1 An axonometric view of the lower die base of the punching mechanism shown;

[0024] Figure 3 for Figure 1 An axonometric view of the upper die base of the punching mechanism shown;

[0025] Figure 4 for Figure 1 The front part of the punching mechanism is provided with a vertical cross-sectional view along the left-right direction at the flanged base;

[0026] Figure 5 for Figure 2 Axonometric diagram of the middle flange base, flange insert, lower punch insert and floater;

[0027] Figure 6 for Figure 5 Axonometric diagram of the middle flange base and its upper flange insert after assembly;

[0028] Figure 7 for Figure 6 Axonometric diagram of the flanged base in FIG.

[0029] Figure 8 for Figure 6 Axonometric diagram of the middle flange insert;

[0030] Fig. 9 It is an axonometric view of a part that can be processed with flanging according to the present invention (the hollow area near the left end is the processing flanging area).

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1. Upper die seat; 2. Lower die seat; 3. Flanging base; 4. Flanging insert; 5. Rotating part; 6. Flanging part; 7. Groove; 8. Rotating shaft; 9. Boss; 10. Tension spring 1; 11. Tension spring 2; 12. Driving block; 13. Lower punch insert; 14. Top block; 15. Telescopic cylinder. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, if terms indicating orientation such as "up", "down", "left", "right", "top", "bottom", "inside" and "outside" are used, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] like Figures 1 to 9 As shown, the present invention provides a double-sided flanging compact rotary stamping mechanism, including an upper die base 1 and a lower die base 2, wherein the front portion of the lower die base 2 is provided with a flanging base 3, and the upper surface of the flanging base 3 is symmetrically connected with two flanging inserts 4, each of the flanging inserts 4 is composed of a bottom rotating portion 5 and a top flanging portion 6, and the upper surface of the flanging base 3 is symmetrically provided with grooves 7 for the rotating portion 5 to be embedded and rotatably connected, and the front and rear ends of the rotating portion 5 extend outwardly with a rotating shaft 8 for rotatably connecting with the axial holes of the front and rear groove walls of the groove 7, and the flanging portion 6 There are protrusions 9 extending outward from the front and rear ends respectively, and the two protrusions 9 at the front ends of the two flanging parts 6 and the two protrusions 9 at the rear ends are respectively connected by tension spring 10 and tension spring 2 11, and the side surfaces of the two flanging parts 6 facing each other are both pressure inclined surfaces, and the sides of the two flanging parts 6 facing away from the pressure inclined surfaces are flanging inclined surfaces. A driving block 12 which can move up and down in the vertical direction is provided on the upper mold base 1, and the driving block 12 can be inserted between the two flanging parts 6 and exert pressure on the two pressure inclined surfaces to make the two flanging inserts 4 rotate outward around the rotating shaft 8.

[0036] It should be noted that in addition to the driving block that can move up and down, the upper die base also has a pressure plate. The pressure plate has the function of pressing and fixing the parts to be flanging on the lower die base before the driving block contacts the flanging inserts, ensuring that the driving block will move downward to drive the two flanging inserts to flip over for flanging only after the parts are pressed and immobilized; the upper die base and the driving block are driven up and down by their own driving mechanisms.

[0037] In one embodiment of the present invention, Figure 8 As shown, the rotating part 5 is cylindrical, the rotating shaft 8 is arranged at the axis of both ends of the rotating part 5, and the flange part 6 and the driving block 12 are both wedge-shaped.

[0038] It should be noted that the cylindrical shape here is accurately a semi-cylinder or three-quarter cylinder, and the upper notch is used to connect the bottom of the flange part; it can be understood that when the rotating part rotates in the groove, the flange part will swing to the left or right.

[0039] In one embodiment of the present invention, Figures 5 to 7 As shown, the two flange inserts 4 are opened in an eight-shaped shape from front to back, the tension spring 10 is located at the front, and the tension spring 2 11 is located at the back, and the tension spring 10 is shorter than the tension spring 2 11. It should be noted that the two flange inserts opened in an eight-shaped shape are only to match the flange shape of the part to be processed (such as Fig. 9 As shown, the flange area on the left end of the part is in an eight-shaped shape). When the shape of the part changes, the position states of the two flange inserts should also change accordingly, which should also be included in the protection scope of the present invention.

[0040] It is understandable that when the drive block is inserted downward between the two flange inserts, it will push the two flange inserts to flip outward around the rotation axis, at which time the tension spring 1 and the tension spring 2 will be stretched. When the flange is completed and the drive block moves upward and gradually separates from the two flange inserts, the tension spring 1 and the tension spring 2 will automatically contract and rotate the two flange inserts inward back to their original positions. Figure 4 The figure shows the state where the upper die driving block 12 and the flanging insert 4 are pressed to the bottom. At this time, the flanging insert 4 has rotated around the rotating shaft 8 to contact the part and press it to fit tightly against the punch insert, achieving a state where the negative angle surface is pressed to death.

[0041] In one embodiment of the present invention, lower punch inserts 13 are respectively provided on the lower die base 2 adjacent to the outer sides of the two flanging inserts 4, and the lower punch inserts 13 have a pressure-bearing surface corresponding to the flanging slope.

[0042] In one embodiment of the present invention, the lower die base 2 is further provided with a floater for lifting the parts after the flanging is completed.

[0043] In one embodiment of the present invention, there are two floaters symmetrically arranged on both sides of the lower die base 2, and the floaters include a top block 14 and a telescopic cylinder 15 located below the top block 14 and connected to the top block 14 through a telescopic end. The telescopic cylinder can be an electric cylinder, a hydraulic cylinder or a pneumatic cylinder commonly used in the prior art.

[0044] In one embodiment of the present invention, vertical channels are respectively provided on the left and right sides of the lower mold base 2 for the telescopic end to pass through so as to be fixedly connected with the bottom of the top block.

[0045] In one embodiment of the present invention, the rotating portion 5 and the flange portion 6 are integrally formed.

[0046] The working principle of the present invention is as follows: when the part is placed on the lower punch 2, the flanging insert 4 is in a retracted state, and the flanging insert 4 and the lower punch insert are in a disengaged state (to ensure that the part can smoothly enter the mold cavity). When the upper die seat 1 moves downward, the pressure plate at the bottom of the upper die seat 1 first presses the part to ensure that the part is crushed to death. Then, the driving block 12 in the upper die seat 1 begins to contact the flanging insert 4. The two flanging inserts 4 respectively start to rotate around their own rotating shafts 8 until the part flange is crushed to death, completing the flanging forming. The driving block 12 then moves upward until it is disengaged from the flanging insert 4. At this time, the two tension springs also pull the two flanging inserts 4 back to the original state, releasing the pressure on the flanging and making way (i.e. returning to the disengaged state). The floater can then lift the part smoothly.

[0047] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-sided flanging compact rotary punching mechanism, comprising an upper die base (1) and a lower die base (2), characterized in that: The front part of the lower die base (2) is provided with a flanging base (3), and the upper surface of the flanging base (3) is symmetrically connected with two flanging inserts (4), each of the flanging inserts (4) is composed of a bottom rotating part (5) and a top flanging part (6), and the upper surface of the flanging base (3) is symmetrically provided with grooves (7) for the rotating part (5) to be embedded and rotatably connected, and the front and rear ends of the rotating part (5) extend outwardly with a rotating shaft (8) for rotatably connecting with the axial holes of the front and rear groove walls of the groove (7), and the front and rear ends of the flanging part (6) respectively extend outwardly with a convex column (9), The two protruding columns (9) at the front ends of the two flanging parts (6) and the two protruding columns (9) at the rear ends are connected respectively by a tension spring 1 (10) and a tension spring 2 (11); the side surfaces of the two flanging parts (6) facing each other are both pressure-bearing inclined surfaces; the side surfaces of the two flanging parts (6) facing away from the pressure-bearing inclined surfaces are flanging inclined surfaces; a driving block (12) which can move up and down in a vertical direction is provided on the upper die seat (1); the driving block (12) can be inserted between the two flanging parts (6) and exert pressure on the two pressure-bearing inclined surfaces to make the two flanging inserts (4) rotate outward around the rotating shaft (8); The rotating part (5) is cylindrical, the rotating shaft (8) is arranged at the axis of the two ends of the rotating part (5), the flanging part (6) and the driving block (12) are both wedge-shaped; the lower die seat (2) is adjacent to the outer sides of the two flanging inserts (4) and is respectively provided with lower punch inserts (13), and the lower punch inserts (13) have a pressure-bearing surface corresponding to the flanging inclined surface.

2. A double-sided flanging compact rotary punching mechanism according to claim 1, characterized in that: The two flanged inserts (4) are opened in an eight-shaped pattern from front to back, the tension spring 1 (10) is located at the front, the tension spring 2 (11) is located at the rear, and the tension spring 1 (10) is shorter than the tension spring 2 (11).

3. A double-sided flanging compact rotary punching mechanism according to any one of claims 1 to 2, characterized in that: The lower die base (2) is also provided with a floater for lifting the parts upward after the flanging is completed.

4. A double-sided flanging compact rotary punching mechanism according to claim 3, characterized in that: There are two floaters symmetrically arranged on both sides of the lower die base (2), and the floaters include a top block (14) and a telescopic cylinder (15) located below the top block (14) and connected to the top block (14) via a telescopic end.

5. A double-sided flanging compact rotary punching mechanism according to claim 4, characterized in that: The left and right sides of the lower die base (2) are respectively provided with vertical channels for the telescopic end to pass through so as to be fixedly connected with the bottom of the top block.

6. A double-sided flanging compact rotary punching mechanism according to claim 4, characterized in that: The rotating portion (5) and the flange portion (6) are integrally formed.

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