Novel combined elbow cold pushing machine

Abstract

The application discloses a novel combined elbow cold pushing machine, and belongs to the field of elbow machining. The cold pushing machine comprises a rack, a main die fixedly installed on the rack, a pushing rod mechanism fixedly installed on the rack at one end of the main die, a rotary motor fixedly installed on the rack at the end of the main die away from the pushing rod mechanism, a die core mechanism arranged on an output shaft of the rotary motor, and a connecting block fixedly installed on the output shaft of the rotary motor. After the elbow pipe is manufactured, the rotary motor drives the base part and the forming part to be returned to the normal position, then the demolding part is moved upward, so that the demolding part moves along the axis track of the through hole in the lifting hole, thereby pushing the end part of the elbow pipe workpiece, reducing the contact area with the elbow pipe workpiece, improving the blanking efficiency, reducing the abrasion of the outer wall of the elbow pipe workpiece, and guaranteeing the production quality.

Description

Technical Field

[0001] This application relates to the field of elbow processing technology, specifically a novel combined elbow cold pusher. Background Technology

[0002] Pipelines are widely used in industrial production, and one indispensable component in these applications is the elbow. The manufacturing process for elbows has evolved from hot-pushing to cold-pushing. Currently, the commonly used processing methods for forming steel pipe elbows in China include casting, stamping, welding, and hot / cold pushing. Existing elbow cold-pushing machines all rely on mechanical components to forcibly separate the die core from the workpiece. Because the workpiece has not been ground or polished, the newly formed workpiece has a very rough inner surface, resulting in significant friction with the die core surface. Forced separation easily leads to the formed workpiece getting stuck on the die core, making removal difficult and affecting work efficiency.

[0003] Chinese utility model patent CN 213968469 U discloses a novel combined elbow cold-pushing machine. It alters the cross-sectional area of ​​the mold core before and after processing by setting the mold core into a spliced ​​structure and inserting detachable fillers inside the mold core, thereby facilitating demolding. However, in actual operation, even after changing the cross-sectional area of ​​the mold core to reduce the contact area between the workpiece and the mold core, demolding still requires manual tapping or reverse core pulling by the equipment, which is inefficient and easily damages the workpiece surface.

[0004] Therefore, this application provides a novel combined elbow cold pusher to solve the above problems. Utility Model Content

[0005] This application provides a novel combined elbow cold pusher, which aims to solve the problems mentioned in the background art, such as the existing demolding tooling easily damaging the workpiece surface.

[0006] To achieve the above objectives, this application provides the following technical solution: a novel combined elbow cold pusher, comprising a frame, a main mold fixedly mounted on the frame, a push rod mechanism fixedly mounted on the frame at one end of the main mold, a rotary motor fixedly mounted on the frame at the end of the main mold away from the push rod mechanism, and a mold core mechanism disposed on the output shaft of the rotary motor.

[0007] A connecting block is fixedly installed on the output shaft of the rotary motor;

[0008] The mold core mechanism includes a column-shaped base fixedly mounted on a connecting block. An L-shaped forming part is fixedly mounted on one end of the base away from the connecting block. A through hole is formed along the axis inside the base. Four lifting holes arranged in a ring array and adapted to the through hole are formed on the outer wall of the base. A cross-shaped demolding part for pushing the bent workpiece is movably mounted inside the base, extending from the through hole to the outside of the lifting hole. In this way, during use, the raw material for the bent tube is placed into the main mold, the rotary motor is started, and the core mechanism on the connecting block is driven into the main mold. Then, the push rod mechanism is started to cold push the raw material for the bent tube to complete the bending process. After the bending process is completed, the rotary motor drives the base and forming parts to return to the center. Then, by moving the demolding part upward, the demolding part moves along the axis of the through hole in the lifting hole, thereby pushing the end of the bent tube and reducing the contact area with the bent tube. This improves the material feeding efficiency, reduces the wear on the outer wall of the bent tube, and ensures production quality.

[0009] Preferably, in order to improve processing efficiency, a second motor is fixedly installed on the connecting block and inserted into the through hole. The output end of the second motor is arranged along the axial direction of the through hole, and the center of the demolding part is screwed to the output end of the second motor. Compared with manual demolding, the efficiency is higher.

[0010] Preferably, in order to ensure the support effect, a push block is fixedly installed on one end of the demolding part that extends outside the lifting hole. The push block is slidably arranged along the outer wall of the base part so that the support strength is higher when the push block contacts and abuts the end of the bent tube workpiece.

[0011] Preferably, to facilitate demolding, the forming part has a spliced ​​structure, comprising a lower forming part and an upper forming part. The lower forming part is integrally formed with the base part, and the upper forming part is movably mounted on the lower forming part and completely overlaps with the outer wall surface of the base part and the lower forming part, thereby reducing the frictional resistance between the forming part and the bent tube workpiece and further improving the demolding efficiency.

[0012] Preferably, for easy adjustment, a support hole is provided at the center of the lower forming part and the upper forming part, and a matching support column is inserted into the support hole. A handle is fixedly installed on one end of the support column outside the support hole. When unloading, the support column can be pulled out to allow the upper forming part to fall and complete the separation, which is convenient and quick.

[0013] Preferably, in order to ensure the stability of the upper forming part, a limiting hole is provided on the lower forming part, and an inverted T-shaped limiting post adapted to the limiting hole is fixedly installed on the upper forming part. The limiting post is inserted into the limiting hole to avoid workpiece processing errors caused by skewing, and to ensure stability and reliability.

[0014] After the tube bending process is completed, the rotating motor drives the base and forming parts to return to the center. Then, by moving the demolding part upward, the demolding part moves along the axis of the through hole within the lifting hole, thereby pushing the end of the bent tube workpiece, reducing the contact area with the bent tube workpiece, improving material feeding efficiency, reducing wear on the outer wall of the bent tube workpiece, and ensuring production quality.

[0015] This cold pusher moves the upper forming part upward during workpiece processing, so that it and the lower forming part form an integral whole that completely overlaps with the base part and the outer contour of the lower forming part, so as to provide stable support for the bent tube workpiece. During demolding, the upper forming part moves downward, thereby reducing the cross-sectional area of ​​the lower forming part and the upper forming part, so that the entire upper forming part detaches from the inner wall of the bent tube workpiece, thereby reducing the frictional resistance between it and the bent tube workpiece and further improving the demolding efficiency. Attached Figure Description

[0016] Figure 1 A schematic diagram of the external structure of a novel combined elbow cold pusher;

[0017] Figure 2 This is a schematic cross-sectional view of a novel combined elbow cold pusher.

[0018] Figure 3 This is a schematic cross-sectional view of a novel combined elbow cold pusher.

[0019] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 5 for Figure 2 Enlarged view of point B in the middle;

[0021] Figure 6 for Figure 3 Enlarged diagram of point C in the middle.

[0022] In the picture:

[0023] 1. Frame; 2. Main mold; 3. Push rod mechanism; 4. Rotary motor; 41. Connecting block; 5. Mold core mechanism; 51. Base part; 52. Forming part; 521. Lower forming part; 522. Upper forming part; 523. Support hole; 524. Support column; 525. Handle; 526. Limiting hole; 527. Limiting post; 53. Through hole; 54. Lifting hole; 55. Demolding part; 56. Second motor; 57. Push block. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] Example 1

[0026] This embodiment provides a novel combined elbow cold pusher, such as Figure 1-6 As shown, the cold pusher includes a frame 1, a main mold 2 fixedly mounted on the frame 1, a push rod mechanism 3 fixedly mounted on the frame 1 at one end of the main mold 2, a rotary motor 4 fixedly mounted on the frame 1 at the end of the main mold 2 away from the push rod mechanism 3, and a mold core mechanism 5 disposed on the output shaft of the rotary motor 4.

[0027] A connecting block 41 is fixedly mounted on the output shaft of the rotary motor 4;

[0028] The mold core mechanism 5 includes a column-shaped base 51 fixedly mounted on the connecting block 41. An L-shaped forming part 52 is fixedly mounted on one end of the base 51 away from the connecting block 41. A through hole 53 is provided in the base 51 along the axis. Four lifting holes 54 arranged in a ring array and adapted to the through hole 53 are provided on the outer wall of the base 51. A cross-shaped demolding part 55 for pushing the bent workpiece is movably mounted in the base 51, extending from the through hole 53 to the outside of the lifting hole 54.

[0029] In use, the raw material of the bent pipe is placed into the main mold 2, the rotary motor 4 is started, and the core mechanism 5 on the connecting block 41 is driven into the main mold 2. Then the push rod mechanism 3 is started to perform cold pushing processing on the raw material of the bent pipe to complete the bending process.

[0030] After the production is completed, the rotary motor 4 drives the base part 51 and the forming part 52 to return to the center. Then, by moving the demolding part 55 upward, the demolding part 55 moves along the axis of the through hole 53 in the lifting hole 54, thereby pushing the end of the bent tube workpiece, reducing the contact area with the bent tube workpiece, improving the material feeding efficiency, reducing the wear on the outer wall of the bent tube workpiece, and ensuring production quality.

[0031] Specifically, a second motor 56 is fixedly installed on the connecting block 41 and inserted into the through hole 53. The output end of the second motor 56 is arranged axially along the through hole 53, and the center of the demolding part 55 is screwed to the output end of the second motor 56.

[0032] During use, the second motor 56 is started during demolding. The output end of the second motor 56 rotates, driving the demolding part 55 to rise and fall within the lifting hole 54. Demolding is stable and reliable, and is more efficient than manual demolding.

[0033] More specifically, a push block 57 is fixedly installed on one end of the demolding part 55 that extends outside the lifting hole 54, and the push block 57 is slidably disposed along the outer wall of the base part 51.

[0034] In use, the end of the demolding part 55 is raised by the push block 57, so that the push block 57 has higher support strength when it contacts and abuts the end of the bent tube workpiece.

[0035] Example 2

[0036] Unlike Embodiment 1, in order to reduce the frictional resistance between the base portion 51 and the forming portion 52 and the bent tube workpiece and facilitate demolding, the forming portion 52 is a spliced ​​structure. The forming portion 52 includes a lower forming portion 521 and an upper forming portion 522. The lower forming portion 521 is integrally formed with the base portion 51, and the upper forming portion 522 is movably mounted on the lower forming portion 521 and completely overlaps with the outer wall surface of the base portion 51 and the lower forming portion 521.

[0037] In use, when processing the workpiece, the upper forming part 522 is moved upward so that it and the lower forming part 521 form an integral whole that completely overlaps with the outer contour of the base part 51 and the lower forming part 521, so as to provide stable support for the bent tube workpiece. When demolding, the upper forming part 522 is moved downward, thereby reducing the cross-sectional area of ​​the lower forming part 521 and the upper forming part 522, so that the entire upper forming part 522 is separated from the inner wall of the bent tube workpiece, thereby reducing the frictional resistance between it and the bent tube workpiece and further improving the demolding efficiency.

[0038] Specifically, a support hole 523 is provided at the center of the lower forming part 521 and the upper forming part 522. A matching support column 524 is inserted into the support hole 523, and a handle 525 is fixedly installed on one end of the support column 524 located outside the support hole 523.

[0039] When in use, during workpiece processing, the support column 524 is pulled out by the handle 525 and inserted into the support hole 523 to support the upper forming part 522, ensuring support of the inner wall of the workpiece. When unloading, the support column 524 is pulled out to allow the upper forming part 522 to fall and complete the separation, which is convenient and quick.

[0040] More specifically, a limiting hole 526 is provided on the lower forming part 521, and an inverted T-shaped limiting post 527 adapted to the limiting hole 526 is fixedly installed on the upper forming part 522. The limiting post 527 is inserted into the limiting hole 526.

[0041] During use, the upper forming part 522 always moves longitudinally within the limiting hole 526 on the lower forming part 521 through the limiting post 527, ensuring that the upper forming part 522 can always maintain stable support for the inner wall of the workpiece, avoiding workpiece processing errors caused by skewing, and ensuring stability and reliability.

[0042] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A novel combined elbow cold pusher, comprising a frame (1), a main mold (2) fixedly mounted on the frame (1), a push rod mechanism (3) fixedly mounted on the frame (1) at one end of the main mold (2), a rotary motor (4) fixedly mounted on the frame (1) at the end of the main mold (2) away from the push rod mechanism (3), and a mold core mechanism (5) disposed on the output shaft of the rotary motor (4), characterized in that: A connecting block (41) is fixedly installed on the output shaft of the rotary motor (4); The mold core mechanism (5) includes a column-shaped base part (51) fixedly installed on the connecting block (41). An L-shaped forming part (52) is fixedly installed on one end of the base part (51) away from the connecting block (41). A through hole (53) is provided in the base part (51) along the axis. Four lifting holes (54) that are arranged in a ring array and are adapted to the through hole (53) are provided on the outer wall of the base part (51). A cross-shaped demolding part (55) for pushing the bent workpiece is movably installed in the base part (51) extending from the through hole (53) to the outside of the lifting hole (54).

2. The novel combined elbow cold pusher according to claim 1, characterized in that: A second motor (56) is fixedly installed on the connecting block (41) and inserted into the through hole (53). The output end of the second motor (56) is arranged axially along the through hole (53), and the center of the demolding part (55) is screwed to the output end of the second motor (56).

3. A novel combined elbow cold pusher according to claim 2, characterized in that: A push block (57) is fixedly installed on one end of the demolding part (55) extending outside the lifting hole (54), and the push block (57) is slidably disposed along the outer wall of the base part (51).

4. A novel combined elbow cold pusher according to claim 1, characterized in that: The molding part (52) is a spliced ​​structure. The molding part (52) includes a lower molding part (521) and an upper molding part (522). The lower molding part (521) is integrally formed with the base part (51). The upper molding part (522) is movably installed on the lower molding part (521) and completely overlaps with the outer wall surface of the base part (51) and the lower molding part (521).

5. A novel combined elbow cold pusher according to claim 4, characterized in that: The lower forming part (521) and the upper forming part (522) are provided with a support hole (523) at the center position. A matching support column (524) is inserted into the support hole (523). A handle (525) is fixedly installed on one end of the support column (524) located outside the support hole (523).

6. A novel combined elbow cold pusher according to claim 5, characterized in that: The lower forming part (521) has a limiting hole (526), ​​and the upper forming part (522) is fixedly installed with a limiting post (527) in the shape of an inverted T that is adapted to the limiting hole (526). The limiting post (527) is inserted into the limiting hole (526).

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