Forming die for special-shaped negative-angle pipe parts

Abstract

The utility model discloses a special-shaped negative-angle pipe part forming die which comprises a workbench, the top of the workbench is fixedly connected with a base, the top of the base is provided with a first rotating groove, the inner wall of the first rotating groove is fixedly connected with a first rotating shaft, the outer wall of the first rotating shaft is rotationally connected with a rotating block, and the rotating block is fixedly connected with the base. A second rotating groove is formed in the outer side of the top of the mold petal, a second rotating shaft is fixedly connected to the inner wall of the second rotating groove, a connecting rod is rotationally connected to the outer wall of the second rotating shaft, an injection molding shaft is fixedly connected to the center of the top of the base, and a sliding groove is formed in the top of the workbench. A limiting rod is fixedly connected to the inner wall of the sliding groove, an injection mold can be formed through the mold petals and the injection molding shaft, injection molding of the special-shaped negative-angle tubular part is facilitated, meanwhile, the mold petals can be rotated by arranging a rotating block and a first rotating shaft, and therefore the mold petals can be opened, and demolding of the formed special-shaped negative-angle tubular part is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of forming special-shaped negative-angle tube parts, in particular to a forming die for special-shaped negative-angle tube parts. Background Art

[0002] Special-shaped negative-angle tubular parts are a type of tubular parts with a relatively special shape, which have unique structural characteristics and manufacturing difficulties. The negative angle refers to the feature size on the thin-walled parts of the rotating body being larger than the opening size of the thin-walled parts. The overall shape of the special-shaped parts is not a regular circular or rectangular tube, but has various irregular shapes, such as bending, twisting, and diameter reduction. Its cross-sectional shape may also not be the common circular or rectangular, but other special shapes, such as ellipse, triangle, polygon, etc.

[0003] Therefore, the existing special-shaped negative angle tubular parts will be hindered from demoulding due to the existence of negative angle after forming, and conventional molds are difficult to meet the demoulding requirements. Therefore, it is necessary to design a special-shaped negative angle tubular parts forming mold that is easy to demould. Utility Model Content

[0004] The purpose of the utility model is to provide a forming die for special-shaped negative-angle tubular parts, which solves the problem that the existing special-shaped negative-angle tubular parts are hindered from demoulding due to the existence of negative angles after forming, and conventional molds are difficult to meet the demoulding requirements.

[0005] To achieve the above-mentioned purpose, a forming mold for special-shaped negative-angle tube parts is provided, comprising: a workbench, the top of the workbench is fixedly connected to a base, the top of the base is provided with a rotating groove 1, the inner wall of the rotating groove 1 is fixedly connected to a rotating shaft 1, the outer wall of the rotating shaft 1 is rotatably connected to a rotating block, the top of the rotating block is fixedly connected to a mold flap, the top outer side of the mold flap is provided with a rotating groove 2, the inner wall of the rotating groove 2 is fixedly connected to a rotating shaft 2, the outer wall of the rotating shaft 2 is rotatably connected to a connecting rod, and the top center of the base is fixedly connected to an injection shaft, so as to facilitate the injection molding of the special-shaped negative-angle tube parts;

[0006] The top of the workbench begins to have a slide groove, the inner wall of the slide groove is fixedly connected to a limit rod, the outer wall of the limit rod is slidably connected to a slider, the top of the slider is fixedly connected to a mounting plate, the inner side of the mounting plate is fixedly connected to a rotating shaft three, the outer wall of the rotating shaft three is rotatably connected to the other end of the connecting rod, the top of the slider is fixedly connected to a fixed block, and mounting holes begin to have mounting holes on both sides of the fixed block, the inside of the mounting hole is fixedly connected to a positioning spring, the other end of the positioning spring is fixedly connected to a positioning block, and the two sides of the slide groove are fixedly connected to a positioning plate, and a positioning hole is opened inside the positioning plate to facilitate the rotation of the mold flap, thereby facilitating the demolding of the special-shaped negative-angle tube parts.

[0007] According to the described special-shaped negative-angle tube part forming mold, a movable hole is opened inside the rotating block, and the shape and size of the movable hole match the shape and size of the rotating shaft one, and the rotating block is rotatably connected to the rotating shaft one through the movable hole, which facilitates the rotation of the rotating block.

[0008] According to the described special-shaped negative-angle tube part forming mold, through holes are opened at both ends of the connecting rod, and the shape and size of the through holes match the shape and size of the rotating shaft two and the rotating shaft three, and the connecting rod is rotatably connected to the rotating shaft two and the rotating shaft three through the through holes, which facilitates the rotation of the connecting rod.

[0009] According to the aforementioned special-shaped negative-angle tubular part forming mold, the number of the mold halves is six, and the six mold halves can form a complete hollow cylinder, which is convenient for injection molding of the special-shaped negative-angle tubular part.

[0010] According to the described special-shaped negative-angle tube part forming mold, a limiting hole is opened inside the slider, and the shape and size of the limiting hole match the shape and size of the limiting rod, and the slider is slidably connected to the slide groove under the action of the limiting rod and the limiting hole, which facilitates the sliding of the slider inside the slide groove.

[0011] According to the forming die for special-shaped negative-angle tube parts, the diameter of the positioning block is smaller than the diameter of the mounting hole, and the positioning block is slidably connected to the mounting hole, so that the positioning block can be easily retracted into the interior of the mounting hole.

[0012] According to the described special-shaped negative-angle tube part forming die, the shape and size of the positioning block match the shape and size of the positioning hole, and when the positions of the positioning block and the positioning hole correspond, under the action of the positioning spring, the positioning block and the positioning hole are correspondingly connected, which facilitates the positioning of the block and the positioning hole, thereby facilitating the fixing of the position of the slider.

[0013] Compared with the prior art, the beneficial effect of the utility model is that the special-shaped negative angle tube parts forming mold can form an injection mold through the set mold flap and injection shaft, which is convenient for the injection molding of special-shaped negative angle tube parts. At the same time, after the special-shaped negative angle tube parts are injection-molded, the slider can be moved by disconnecting the connection between the positioning block and the positioning hole, and the movement of the slider in the slide groove drives the rotation of the mold flap, thereby opening the mold flap, which is convenient for the demolding of the special-shaped negative angle tube parts.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1This is a schematic diagram of the three-dimensional structure of a forming die for special-shaped negative-angle tube parts of the utility model;

[0017] Figure 2 This is a schematic diagram of the top structure of the base of a forming die for special-shaped negative-angle tube parts according to the present invention;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of a slider of a forming die for special-shaped negative-angle tube parts according to the present invention;

[0019] Figure 4 This is a cross-sectional view of a slider of a forming die for special-shaped negative angle tube parts according to the present invention;

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of a mold flap of a forming mold for special-shaped negative-angle tube parts according to the present invention;

[0021] Figure 6 This utility model is a forming die for special-shaped negative angle tube parts. Figure 2 A magnified view of location A.

[0022] In the figure: 1. Workbench; 2. Base; 3. Rotation slot 1; 4. Rotation shaft 1; 5. Mold flap; 6. Rotation block; 7. Movable hole; 8. Rotation shaft 2; 9. Rotation slot 2; 10. Injection shaft; 11. Connecting rod; 12. Slide; 13. Limit rod; 14. Slider; 15. Limit hole; 16. Mounting plate; 17. Rotation shaft 3; 18. Fixed block; 19. Mounting hole; 20. Positioning spring; 21. Positioning block; 22. Positioning plate; 23. Positioning hole. DETAILED DESCRIPTION

[0023] 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 utility model, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the utility model.

[0024] See also Figure 1-6, the embodiment of the utility model provides a technical solution: a forming mold for special-shaped negative-angle tube parts, comprising: a workbench 1, the top of the workbench 1 is fixedly connected to a base 2, the top of the base 2 is provided with a rotating groove 3, the inner wall of the rotating groove 3 is fixedly connected to a rotating shaft 4, the outer wall of the rotating shaft 4 is rotatably connected to a rotating block 6, the top of the rotating block 6 is fixedly connected to a mold flap 5, the top outer side of the mold flap 5 is provided with a rotating groove 2 9, the inner wall of the rotating groove 2 9 is fixedly connected to a rotating shaft 2 8, the outer wall of the rotating shaft 2 8 is rotatably connected to a connecting rod 11, and the top center of the base 2 is fixedly connected to an injection shaft 10. An injection mold can be formed by six mold flaps 5 and the injection shaft 10, thereby facilitating the injection molding of the special-shaped negative-angle tube parts;

[0025] There is a slide groove 12 at the top of the workbench 1, and the inner wall of the slide groove 12 is fixedly connected to the limit rod 13, and the outer wall of the limit rod 13 is slidably connected to the slider 14. The top of the slider 14 is fixedly connected to the mounting plate 16, and the inner side of the mounting plate 16 is fixedly connected to the rotating shaft 3 17. The outer wall of the rotating shaft 3 17 is rotatably connected to the other end of the connecting rod 11, and the top of the slider 14 is fixedly connected to the fixing block 18. There are mounting holes 19 on both sides of the fixing block 18, and the inside of the mounting hole 19 is fixedly connected to a positioning spring 20, and the other end of the positioning spring 20 is fixedly connected to a positioning block 21. Both sides of the slide groove 12 are fixedly connected to positioning plates 22, and a positioning hole 23 is provided inside the positioning plate 22. The movement of the slider 14 in the slide groove 12 can drive the rotation of the mold flap 5, thereby opening the mold flap 5, which is convenient for demolding the special-shaped negative-angle tube parts.

[0026] A movable hole 7 is provided inside the rotating block 6, and the shape and size of the movable hole 7 match the shape and size of the rotating shaft 4, and the rotating block 6 is rotatably connected to the rotating shaft 4 through the movable hole 7, which is convenient for the rotation of the rotating block 6, thereby facilitating the rotation of the mold flap 5. Through holes are provided at both ends of the connecting rod 11, and the shape and size of the through holes match the shape and size of the rotating shaft 2 8 and the rotating shaft 3 17, and the connecting rod 11 is rotatably connected to the rotating shaft 2 8 and the rotating shaft 3 17 through the through holes, which is convenient for the rotation of the connecting rod 11, and the rotation of the mold flap 5 can be driven by the rotation of the connecting rod 11, which is convenient for the opening and closing of the mold flap 5. The number of mold flaps 5 is six, and the six mold flaps 5 can form a complete hollow cylinder. The six mold flaps 5 and the injection shaft 10 form an injection mold, thereby facilitating the injection molding of the special-shaped negative-angle tubular part. A limiting hole 15 is provided inside the slider 14, and the limiting hole 15 The shape and size match those of the limit rod 13, and the slider 14 is slidably connected to the slide groove 12 under the action of the limit rod 13 and the limit hole 15. The limit rod 13 can limit the slider 14, thereby facilitating the sliding of the slider 14 inside the slide groove 12. The diameter of the positioning block 21 is smaller than the diameter of the mounting hole 19, and the positioning block 21 is slidably connected to the mounting hole 19, which facilitates the positioning block 21 to retract toward the inside of the mounting hole 19, thereby facilitating the control of the connection between the positioning block 21 and the positioning hole 23. The shape and size of the positioning block 21 match those of the positioning hole 23, and when the position of the positioning block 21 corresponds to the position of the positioning hole 23, under the action of the positioning spring 20, the positioning block 21 corresponds to the positioning hole 23, which facilitates the positioning block 21 and the positioning hole 23, thereby facilitating the fixing of the position of the slider 14, thereby facilitating the control of the rotation and opening and closing of the mold flap 5.

[0027] Working principle: When in use, move the six sliders 14 in sequence, and at the same time press the positioning blocks 21 on both sides of the fixed block 18 at the top of the slider 14 to make it shrink toward the inside of the mounting hole 19 and compress the positioning spring 20, and move the slider 14 until the position of the fixed block 18 corresponds to the position of the positioning plates 22 on both sides of the end of the slide 12 close to the base 2. When the position of the positioning block 21 corresponds to the position of the positioning hole 23 on the positioning plate 22, under the action of the positioning spring 20, the positioning block 21 is connected to the positioning hole 23 accordingly, thereby fixing the position of the slider 14, thereby completing the installation of the mold halves 5, and completing the installation of the six mold halves 5 in sequence. The six mold halves 5 and the injection shaft 10 at the top center of the base 2 form an injection molding machine. The mold can start injection molding of special-shaped negative-angle tube parts. After the injection molding is completed, press the positioning blocks 21 on the outside of the two positioning plates 22 at the same time to make them shrink toward the inside of the mounting hole 19 again, thereby disconnecting the connection between the positioning hole 23 and the positioning blocks 21, and then move the slider 14. As the slider 14 moves, the mold flap 5 gradually opens until the slider 14 corresponds to the positioning plates 22 on both sides of the other end of the slide groove 12. The positioning blocks 21 are connected to the positioning holes 23 under the action of the positioning spring 20, thereby fixing the position of the slider 14. At the same time, the mold flap 5 is fully opened, and the six mold flaps 5 are opened in turn to take out the formed special-shaped negative-angle tube parts, completing the demoulding of the special-shaped negative-angle tube parts.

[0028] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A forming die for special-shaped negative angle tube parts, comprising: A workbench (1), characterized in that the top of the workbench (1) is fixedly connected to a base (2), a rotating groove (3) is provided on the top of the base (2), the inner wall of the rotating groove (3) is fixedly connected to a rotating shaft (4), the outer wall of the rotating shaft (4) is rotatably connected to a rotating block (6), the top of the rotating block (6) is fixedly connected to a mold flap (5), a rotating groove (9) is provided on the outer side of the top of the mold flap (5), the inner wall of the rotating groove (9) is fixedly connected to a rotating shaft (8), the outer wall of the rotating shaft (8) is rotatably connected to a connecting rod (11), and an injection shaft (10) is fixedly connected to the center of the top of the base (2); The workbench (1) starts with a slide groove (12), the inner wall of the slide groove (12) is fixedly connected to a limit rod (13), the outer wall of the limit rod (13) is slidably connected to a slider (14), the top of the slider (14) is fixedly connected to a mounting plate (16), the inner side of the mounting plate (16) is fixedly connected to a rotating shaft three (17), the outer wall of the rotating shaft three (17) is rotatably connected to the other end of the connecting rod (11), the top of the slider (14) is fixedly connected to a fixed block (18), and mounting holes (19) are formed on both sides of the fixed block (18), the interior of the mounting hole (19) is fixedly connected to a positioning spring (20), the other end of the positioning spring (20) is fixedly connected to a positioning block (21), the two sides of the slide groove (12) are fixedly connected to positioning plates (22), and the interior of the positioning plate (22) is provided with a positioning hole (23).

2. The forming die for special-shaped negative-angle tube parts according to claim 1, characterized in that: A movable hole (7) is provided inside the rotating block (6), and the shape and size of the movable hole (7) match the shape and size of the rotating shaft (4), and the rotating block (6) is rotatably connected to the rotating shaft (4) through the movable hole (7).

3. The forming die for special-shaped negative-angle tube parts according to claim 1, characterized in that: Both ends of the connecting rod (11) are provided with through holes, and the shape and size of the through holes match the shape and size of the second rotating shaft (8) and the third rotating shaft (17), and the connecting rod (11) is rotatably connected to the second rotating shaft (8) and the third rotating shaft (17) through the through holes.

4. The forming die for special-shaped negative-angle tube parts according to claim 1, characterized in that: The number of the mold halves (5) is six, and the six mold halves (5) can form a complete hollow cylinder.

5. The forming die for special-shaped negative-angle tube parts according to claim 1, characterized in that: A limiting hole (15) is provided inside the slider (14), and the shape and size of the limiting hole (15) match the shape and size of the limiting rod (13), and the slider (14) is slidably connected to the slide groove (12) under the action of the limiting rod (13) and the limiting hole (15).

6. The forming die for special-shaped negative-angle tube parts according to claim 1, characterized in that: The diameter of the positioning block (21) is smaller than the diameter of the mounting hole (19), and the positioning block (21) is slidably connected to the mounting hole (19).

7. The forming die for special-shaped negative-angle tube parts according to claim 1, characterized in that: The shape and size of the positioning block (21) match the shape and size of the positioning hole (23), and when the positions of the positioning block (21) and the positioning hole (23) correspond, the positioning block (21) and the positioning hole (23) are connected correspondingly under the action of the positioning spring (20).

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