U-shaped bolt machining die

Abstract

The utility model discloses a U-shaped bolt processing mould, which relates to the technical field of U-shaped bolt moulds and particularly comprises a first mounting seat and a second mounting seat, two limiting plates are symmetrically arranged on one side of the first mounting seat, and telescopic mechanisms are rotatably connected to the sides, far away from each other, of the two limiting plates. The other end of the limiting plate and the other end of the telescopic mechanism are rotationally connected with the first mounting seat; a connecting plate is vertically connected to the side face of the second mounting base, the tail end of the connecting plate is vertically connected to the middle of the extrusion plate, and the two sides of the extrusion plate extend out of the edge of the connecting plate. When the device is used, the extrusion plate is driven by a machine tool to extrude the screw rod to the position between the two limiting plates to form a U-shaped structure, at the moment, the telescopic mechanism drives the limiting plates to continuously move inwards by a preset distance, the outward expansion trend of the U-shaped screw rod is eliminated, and a U-shaped bolt can be produced.

Description

Technical Field

[0001] The utility model relates to the technical field of U-shaped bolt molds, in particular to a U-shaped bolt processing mold. Background Art

[0002] U-bolts are non-standard parts, named for their U-shaped form. They have threads at both ends for use with nuts. Mass-produced, U-bolts are formed using extrusion machines equipped with a forming die. Existing U-bolt forming dies primarily consist of an upper die rod and a lower die base. During stamping, the workpiece is placed on the lower die base, and the upper die rod presses the workpiece into the U-shaped cavity of the lower die base. However, after extrusion, existing U-bolts experience springback deformation from the metal rod, causing the ends of the extruded U-bolt to expand and deform outward after removal from the die.

[0003] For example, the patent application number "201821888629.4" proposes a U-bolt processing mold. When in use, the first electric telescopic rod drives the pressure head to press downward until the pressing block (equivalent to the screw 4 in this application) is pressed to the lowest end of the U-shaped groove. At this time, the bolt is formed, and then the telescopic rod of the second electric telescopic rod moves upward to eject the formed bolt. Although this operation method can initially press the pressing block into a U-shaped structure, it cannot eliminate the tendency of the originally linear pressing block to deform outward after becoming U-shaped, which may cause the U-shaped pressing block to not be in a correct U-shaped structure. To this end, we propose a U-bolt processing mold. Utility Model Content

[0004] In view of the deficiency that the existing U-bolt processing mold cannot eliminate the tendency of the molded parts to expand outward, the utility model provides a U-bolt processing mold, which has the advantage that after the screw is formed, the telescopic mechanism can drive the screw to continue to move a certain distance inward, thereby eliminating the rebound force of the U-shaped screw, solving the problems raised in the above background technology.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A U-bolt processing mold is designed, comprising a first mounting seat and a second mounting seat. Two limiting plates are symmetrically provided on one side of the first mounting seat. A telescopic mechanism is rotatably connected to the side of the two limiting plates that are away from each other. The other ends of the limiting plates and the telescopic mechanism are respectively rotatably connected to the first mounting seat.

[0007] A connecting plate is vertically connected to the side surface of the second mounting seat, the end of the connecting plate is vertically connected to the middle of the extruded plate, and both sides of the extruded plate extend to the outside of the edge of the connecting plate;

[0008] Both the connecting plate and the extrusion plate can be placed between the limiting plates, and a gap for extruding the screw is provided between the extrusion plate, the first mounting seat and the limiting plates.

[0009] Optionally, the limiting plate, the telescopic mechanism, and the first mounting seat are distributed in a triangle.

[0010] Optionally, the connecting plate and the extruded plate are connected via at least one reinforcing rib, and a side surface of the reinforcing rib is arranged in a stepped manner with a side surface of the extruded plate.

[0011] Optionally, both the first mounting seat and the second mounting seat are provided with mounting holes.

[0012] Optionally, openings are provided on the free ends of the two limiting plates, supports are installed at both ends of the openings, support wheels are provided between the supports, and both ends of the support wheels are rotatably connected to the supports respectively.

[0013] Optionally, both sides of the extrusion plate are arc-shaped edges, and the curvature of the arc-shaped edges is consistent with the curvature of the inner bending part of the screw.

[0014] Compared with the prior art, when the present invention is in use, the extrusion plate, driven by the machine tool, squeezes the screw rod straight between the two limit plates to form a U-shaped structure. At this time, the telescopic mechanism drives the limit plates to continue to move inward by a preset distance, eliminating the tendency of the U-shaped screw rod to expand outward, and a straight U-shaped bolt can be produced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 .

[0016] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 .

[0017] Figure 3 This is a structural schematic diagram of the utility model in which the screw is pressed into between the limiting plates by the extrusion plate.

[0018] Figure 4 This is a structural schematic diagram of the utility model in which the screw is squeezed inwards to a certain angle by the limiting plate.

[0019] In the figure: 1. First mounting seat; 2. Limiting plate; 3. Support; 4. Screw; 5. Extrusion plate; 6. Connecting plate; 7. Second mounting seat; 8. Reinforcement edge; 9. Opening; 10. Support wheel; 11. Arc edge; 12. Rotating block; 13. U-shaped seat; 14. Telescopic mechanism. DETAILED DESCRIPTION

[0020] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1 to 4 The utility model provides a technical solution: a U-shaped bolt processing mold, including a first mounting seat 1 and a second mounting seat 7, the first mounting seat 1 and the second mounting seat 7 are respectively installed on the machine tool, and the first mounting seat 1 and the second mounting seat 7 are both provided with mounting holes, and the two mounting seats can be fastened to the machine tool by bolts.

[0022] Two limiting plates 2 are symmetrically provided on one side of the first mounting seat 1, and one side of the limiting plate 2 is rotatably connected to the first mounting seat 1. Specifically, a plurality of rotating blocks 12 are provided on the side of the limiting plate 2 close to the first mounting seat 1, and each rotating block 12 is rotatably installed in the U-shaped seat 13, and the U-shaped seat 13 is provided on the first mounting seat 1. The plurality of U-shaped seats 13 form a pair of support points for the side edges of the limiting plate 2, so that the limiting plate 2 can have better support while rotating.

[0023] like Figure 1 and Figure 2 As shown, a telescopic mechanism 14 is rotatably connected to the side where the two limit plates 2 are away from each other. The telescopic mechanism 14 here is preferably a hydraulic cylinder. The other end of the telescopic mechanism 14 is rotatably connected to the first mounting seat 1, and the limit plates 2, the telescopic mechanism 14, and the first mounting seat 1 are distributed in a triangular shape. Therefore, when the telescopic mechanism 14 is extended, it can drive the limit plates 2 toward the extrusion plate 5. When shortened, the two limit plates 2 can be mobilized to open into a V-shaped structure. However, in the initial state, the limit plates 2 are perpendicular to the first mounting seat 1.

[0024] The above-mentioned first mounting seat 1 and limiting plate 2 constitute an upper mold structure, and also include a lower mold structure matched therewith. Specifically, the lower mold structure is vertically connected to a connecting plate 6 on the side of the second mounting seat 7. The end of the connecting plate 6 is vertically connected to the middle of the extrusion plate 5. Both sides of the extrusion plate 5 extend to the outside of the edge of the connecting plate 6. In order to enhance the supporting strength, the connecting plate 6 and the extrusion plate 5 are connected by at least one reinforcing ridge 8. The side of the reinforcing ridge 8 is stepped with the side of the extrusion plate 5. It should be noted that the side of the reinforcing ridge 8 is stepped with the side of the extrusion plate 5 and both sides of the extrusion plate 5 extend to the outside of the edge of the connecting plate 6. The purpose of this design is to allow the screw 4 to be fully pressed between the limiting plates 2, so that there is a spacing between the screw 4 and the connecting plate 6 and the reinforcing ridge 8 (such as Figure 3The distance is indicated by the arrow A in the middle), and the distance is used for the screw 4 to continue to bend toward the connecting plate 6;

[0025] Driven by the machine tool, the connecting plate 6 and the extrusion plate 5 can be placed between the limit plates 2, such as Figure 3 As shown, a gap for squeezing the screw 4 is provided between the squeezing plate 5 and the first mounting seat 1 and the limiting plate 2. At this time, the screw 4 is firmly squeezed by the squeezing plate 5 against the side of the first mounting seat 1. Although the screw 4 is squeezed into a U-shaped structure, it still has a tendency to expand outward. Therefore, when the limiting plate 2 is removed, the screw 4 is deformed under the action of the rebound force, and thus the desired correct U-shape cannot be achieved.

[0026] So in order to eliminate the stability of deformation, such as Figure 4 As shown, at this time, the telescopic mechanism 14 drives the limit plate 2 to continue rotating toward the connecting plate 6, allowing the limit plate 2 to continue driving the screw 4 to move a certain distance toward the connecting plate 6. The movement distance is consistent with the distance of the screw 4 deforming toward the outer shape, that is, after the screw 4 bends a certain distance toward the connecting plate, the distance the screw 4 expands outward offsets the distance, making the screw 4 a positive U shape.

[0027] like Figure 1 and Figure 2 As shown, in order to reduce the friction between the ends of the screw and the limit plate 2 during the pressing process, openings 9 are provided on the free ends of the two limit plates 2, and supports 3 are installed at both ends of the openings 9. Support wheels 10 are provided between the supports 3, and the two ends of the support wheel 10 are respectively rotatably connected to the supports 3, and the surface of the support wheel 10 is flush with the surface of the limit plate 2.

[0028] In summary, both sides of the extrusion plate 5 are arc-shaped edges 11, and the curvature of the arc-shaped edges 11 is consistent with the curvature of the inner bending part of the screw 4, such as Figure 4 As shown, when the screw 4 is directed toward the connecting plate 6, the arcuate edge 11 contacts the two inner corners of the screw 4. The edge shape of the extrusion plate 5 is designed into an arc structure to protect the inner corners of the screw 4.

[0029] The complete process of the utility model is that in the initial state, the limit plate 2 is perpendicular to the first mounting seat 1, the straight screw 4 is placed at the end of the limit plate 2, and the extrusion plate 5 is driven by the machine tool to squeeze the screw straight between the two limit plates 2 to form a U-shaped structure;

[0030] At this time, the telescopic mechanism 14 drives the limit plate 2 to continue moving inward by a preset distance, and then the telescopic mechanism drives the two limit plates to open, and the extrusion plate 5 and the connecting plate 6 are pulled out from the two limit plates 2, and the formed U-shaped bolt can be blanked.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections, indirect connections through an intermediate medium, or internal connections between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Furthermore, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A U-bolt processing die, comprising a first mounting seat (1) and a second mounting seat (7), characterized in that: Two limiting plates (2) are symmetrically provided on one side of the first mounting seat (1); a telescopic mechanism (14) is rotatably connected to the sides of the two limiting plates (2) that are away from each other; and the other ends of the limiting plates (2) and the telescopic mechanism (14) are respectively rotatably connected to the first mounting seat (1); A connecting plate (6) is vertically connected to the side surface of the second mounting seat (7), the end of the connecting plate (6) is vertically connected to the middle of the extrusion plate (5), and both sides of the extrusion plate (5) extend to the outside of the edge of the connecting plate (6); The connecting plate (6) and the extrusion plate (5) can both be placed between the limiting plates (2), and a gap for extruding the screw (4) is provided between the extrusion plate (5), the first mounting seat (1), and the limiting plates (2).

2. A U-bolt processing mold according to claim 1, characterized in that: The limiting plate (2), the telescopic mechanism (14), and the first mounting seat (1) are distributed in a triangular shape.

3. A U-bolt processing die according to claim 1, characterized in that: The connecting plate (6) and the extruded plate (5) are connected via at least one reinforcing rib (8), and the side surface of the reinforcing rib (8) is arranged in a stepped manner with the side surface of the extruded plate (5).

4. A U-bolt processing die according to claim 1, characterized in that: Both the first mounting seat (1) and the second mounting seat (7) are provided with mounting holes.

5. The U-bolt processing mold according to claim 1, characterized in that: The free ends of the two limiting plates (2) are both provided with openings (9), supports (3) are installed at both ends of the openings (9), and a supporting wheel (10) is provided between the supports (3), and both ends of the supporting wheel (10) are rotatably connected to the supports (3).

6. A U-bolt processing die according to claim 1, characterized in that: Both sides of the extrusion plate (5) are arc-shaped edges (11), and the curvature of the arc-shaped edges (11) is consistent with the curvature of the inner bending part of the screw (4).

Images