Drawing die mechanism for copper pipe machining

Abstract

A drawing die mechanism for copper pipe machining belongs to the field of machining and comprises a brake cylinder, a hanger shaft, a bearing, a hanger, a support, an outer suspension shaft, a set screw, a torsion bar, an inner suspension shaft, a cylinder positioning seat, a die box body, a dustproof cover and a bearing spacer bush. The hanging bracket is mounted between the upper and lower mounting plates of the bracket through the upper and lower hanging shafts; the die box body is installed between the left supporting plate and the right supporting plate of the hanging bracket through a left outer hanging shaft and a right inner hanging shaft, the torsion bar is in key connection with the inner hanging shafts, the brake air cylinder is installed on an installation plate on the support, one end of the air cylinder positioning seat is installed on one side of the hanging bracket on the support, and the other end of the air cylinder positioning seat is connected with the torsion bar installed on the hanging bracket. According to the mechanism, the two lifting shafts and the two suspension shafts are used for achieving free adjustment in the up-down direction, the left-right direction of the mechanism, and brake positioning can be conducted through an air cylinder so that conversion of a fixed state and a moving state can be achieved. And the guiding passing range and the self-adaptability of the copper pipe are ensured, and the labor intensity of operators is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical processing and relates to a mold mechanism, particularly a drawing mold mechanism for copper tube processing. Background Technology

[0002] As is well known, the copper tube processing process requires guiding the copper tube while simultaneously drawing it using molds to control its size and shape, thus producing the desired copper tube. Initially, copper tubes are often in a coiled, coiled state. Unwinding this coil inevitably leads to uncertain output direction and significant angle variations, making initial processing difficult and affecting subsequent finishing. Furthermore, the mold box used for initial copper tube processing is typically quite high, making manual angle adjustments time-consuming and labor-intensive. Working at such a height also poses certain safety hazards.

[0003] The State Intellectual Property Office granted a utility model patent on May 28, 2021, entitled "A Drawing Die for Copper Tube Processing," with application number 2020219827303 and authorization announcement number CN213288183U; the application date was September 11, 2020. This utility model discloses a drawing die for copper tube processing, including an installation groove. An oil bottle is provided at the top right of the installation groove. A die is provided in the installation groove. An inlet is provided in the middle right side of the die, and an outlet is provided in the middle left side of the die. A first compression neck, a second compression neck, and a third compression neck are sequentially provided between the inlet and the outlet inside the die. In this invention, the compression diameter decreases sequentially from large to small through the first, second, and third compression necks, resulting in a smoother drawing process for the copper tube in the mold and reducing the risk of breakage. When changing to a different diameter mold, the mold must be removed from the mounting slot, and a new mold of the required diameter is inserted from the right side of the mounting slot, ensuring that the groove on the fixing edge engages with the positioning block on the mounting slot. This mechanism is relatively simple but requires manual adjustment and is suitable for workshops with small batch sizes.

[0004] Therefore, it is absolutely necessary to provide a copper tube processing guide mechanism that can automatically adjust its direction according to the direction in which the copper tube enters. After improvement, this mechanism can adjust its angle in four directions (up, down, left, and right) to ensure that the initial processing of the copper tube is quick and fast, and it is also suitable for mass production. Utility Model Content

[0005] The purpose of this utility model is to provide a drawing die mechanism for copper tube processing that is compact in structure, easy to operate, has multiple angle adjustment directions, and produces good processing quality.

[0006] To achieve the above objectives, a drawing die mechanism for copper tube processing includes: a brake cylinder, a hanging shaft, a bearing, a hanger, a bracket, an outer suspension shaft, a set screw, a torsion bar, an inner suspension shaft, a cylinder positioning seat, a die box body, a dust cover, and a bearing spacer. The hanger is mounted between two mounting plates on the bracket via two hanging shafts. A bearing is mounted on the hanging shaft, and dust covers are installed on the upper and lower exposed ends of the bearing. The die box body is mounted between two support plates on the left and right sides of the hanger via two outer suspension shafts on the left and right sides, and an inner suspension shaft. The torsion bar is connected to the inner suspension shaft by a key. The brake cylinder is mounted on the mounting plate on the bracket. One end of the cylinder positioning seat is mounted on one side of the hanger on the bracket. A bearing spacer is installed in the gap between the hanger and the bracket. The other end of the cylinder positioning seat is connected to the torsion bar mounted on the hanger. The set screw is installed in the threaded hole above the torsion bar.

[0007] The bearing is fixed to the mounting hole structure on the bracket via a lifting shaft flange structure, and the lifting shaft is fixed to the bracket with screws.

[0008] The upper and lower exposed ends of the bearing are equipped with dust covers.

[0009] The external suspension shaft is connected to the hanger via a copper sleeve.

[0010] The set screw is installed in the threaded hole above the torsion bar.

[0011] The inner suspension shaft is connected to the mold box body via a copper sleeve.

[0012] The mounting hole on the cylinder positioning seat is a waist-shaped hole, and the screw passes through the waist-shaped hole on the cylinder positioning seat to install it on the side of the hanger.

[0013] The bearing spacer is installed in the gap between the hanger and the bracket.

[0014] The advantages of this utility model due to the adoption of the above-described technical solution are as follows: This utility model utilizes two hanging shafts and two suspension shafts to achieve free adjustment of the mechanism in four directions (up, down, left, and right), and can achieve the transition between fixed and moving states through cylinder braking and positioning. Furthermore, the mold box mechanism has a wide operating range, is easy to operate, has strong passability, and strong self-adjustment. It ensures the copper tube guiding passage range, reduces the accuracy required in the guiding process, and achieves a certain degree of self-adaptability, reducing unnecessary high-altitude operations, reducing personnel auxiliary work time, and reducing the operator's labor intensity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a drawing die for copper tube processing according to the present invention;

[0016] Figure 2 This is a cross-sectional structural diagram of the upper connecting part of the bracket and hanger of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the lower connecting part of the bracket and hanger of this utility model;

[0018] Figure 4 This is a cross-sectional schematic diagram of the external suspension shaft connection part of this utility model;

[0019] Figure 5 This is a cross-sectional schematic diagram of the inner suspension shaft connection part of this utility model.

[0020] In the diagram: 1. Brake cylinder; 2. Hanger shaft; 3. Bearing; 4. Hanger; 5. Bracket; 6. External suspension shaft; 7. Set screw; 8. Torsion bar; 9. Internal suspension shaft; 10. Cylinder positioning seat; 11. Mold box body; 12. Dust cover; 13. Bearing spacer. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments. For example... Figure 1-5 As shown, a drawing die mechanism for copper tube processing includes: a brake cylinder 1, a lifting shaft 2, a bearing 3, a hanger 4, a bracket 5, an outer suspension shaft 6, a set screw 7, a torsion bar 8, an inner suspension shaft 9, a dust cover 12, and bearing spacers 13. The bearing 3 is installed in the bearing mounting hole on the hanger 4. The hanger 4 and bracket 5 are connected by the lifting shaft 2. The brake cylinder 1 is mounted on a mounting plate on the bracket 5. One end of the cylinder positioning seat 10 is installed on one side of the hanger 4 on the bracket 5, and the other end of the cylinder positioning seat 10 is connected to the torsion bar 8 installed on the hanger 4. Two bearing spacers 13 are positioned within the mounting gap between the hanger 4 and bracket 5 to position the bearing 3. The flange face of the lifting shaft 2 is fixed to the lifting shaft mounting surface of the bracket 5 with screws. The dust cover 12 is installed on the pre-reserved dust cover mounting surface on the hanger 4 on the exposed bearing structure on the other side with screws.

[0022] The outer suspension shaft 6 is connected to the mold box body 11 and the hanger 4 by passing them through the side mounting holes. A key connection is used to connect the outer suspension shaft 6 to the mold box body 11 to achieve synchronous operation. A self-lubricating copper sleeve connects the outer suspension shaft 6 to the hanger 4 to ensure smooth rotation of the outer suspension shaft 6. A set screw 7 is installed in the threaded hole above the torsion bar 8 to fix the torsion bar 8 and prevent it from slipping off the outer suspension shaft 6.

[0023] The inner suspension shaft 9 is passed through the side mounting holes of the mold box body 11 and the hanger 4 to connect the two, and the inner suspension shaft 9 is connected and fixed to the hanger 4 with screws. The inner suspension shaft 9 is connected to the mold box body 11 through the self-lubricating copper sleeve to achieve smooth rotation of the hanger 4.

[0024] Its working principle is as follows: by using two upper and lower hanging shafts 2 and two left and right inner hanging shafts 9 and outer hanging shafts 6, the outer hanging shaft 6 is connected to the mold box body 11 by a key to realize the synchronous operation of the outer hanging shaft 6 and the mold box body, thereby realizing the up and down adjustment of the mold box. The key connection between the outer hanging shaft 6 and the torsion bar 8 ensures that the cylinder can control the angle of adjustment of the mold box in the up and down direction. The two hanging shafts 2 installed in the up and down direction are connected by the bearing 3 installed in the bearing mounting hole on the hanger 4 to realize smooth operation, and the hanger 4 and the bracket 5 are connected to realize the left and right adjustment of the mold box.

[0025] This utility model utilizes two hanging shafts and two suspension shafts to achieve free adjustment of the mechanism in four directions: up, down, left, and right. The mechanism has a wide operating range, is easy to operate, has strong passability, and is self-adjusting. It not only ensures the copper tube guiding passage range and reduces the accuracy required in the guiding process, but also achieves a certain degree of self-adaptability, reduces unnecessary high-altitude operations, reduces personnel auxiliary work time, and reduces the labor intensity of operators.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the entire content of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make formal modifications to the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. All formal modifications and equivalent substitutions made within the scope of the concept and teaching of this utility model should be included within the scope of protection of this utility model.

Claims

1. A drawing die mechanism for copper tube processing, comprising: Brake cylinder (1), hanger shaft (2), bearing (3), hanger (4), bracket (5), external suspension shaft (6), set screw (7), torsion bar (8), internal suspension shaft (9), cylinder positioning seat (10), mold box body (11), dust cover (12), bearing spacer (13); characterized in that: the hanger (4) is installed between the upper and lower mounting plates of the bracket (5) through two upper and lower hanger shafts (2); the hanger shaft (2) is equipped with a bearing (3), and the upper and lower exposed ends of the bearing (3) are equipped with dust covers (12); the mold box body (11) is connected to the upper and lower mounting plates of the bracket (5) through the left and right hanger shafts (6), the set screw (7), the torsion bar (8), the internal suspension shaft (9), the cylinder positioning seat (10), the mold box body (11) is connected to the mold box body (1 ... There is an outer suspension shaft (6) on each side, and an inner suspension shaft (9) is installed between the two support plates on the left and right sides of the hanger (4). The torsion bar (8) is connected to the inner suspension shaft (9) with a key. The brake cylinder (1) is installed on the mounting plate on the bracket (5). One end of the cylinder positioning seat (10) is installed on the side of the hanger (4) on the bracket (5). A bearing spacer (13) is installed in the gap between the hanger (4) and the bracket (5). The other end of the cylinder positioning seat (10) is connected to the torsion bar (8) installed on the hanger (4). The set screw (7) is installed in the threaded hole above the torsion bar (8).

2. The drawing die mechanism for copper pipe processing according to claim 1, characterized in that: The bearing (3) is fixed to the mounting hole structure on the bracket (5) through the flange structure of the lifting shaft (2), and the lifting shaft (2) is fixed to the bracket (5) by screws.

3. The drawing die mechanism for copper pipe processing according to claim 2, characterized in that: The bearing (3) is equipped with dust covers (12) on its upper and lower exposed ends.

4. The drawing die mechanism for copper pipe processing according to claim 1, characterized in that: The external suspension shaft (6) and the hanger (4) are connected by a copper sleeve.

5. The drawing die mechanism for copper pipe processing according to claim 1, characterized in that: The inner suspension shaft (9) is connected to the mold box body (11) via a copper sleeve.

6. The drawing die mechanism for copper pipe processing according to claim 1, wherein: The mounting hole on the cylinder positioning seat (10) is a waist-shaped hole, and the screw passes through the waist-shaped hole on the cylinder positioning seat (10) to install it on the side of the hanger (4).

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