A manual bending machine for capillary copper tubes

Abstract

The utility model discloses a kind of capillary copper pipe manual bending machines, comprising: fixed mould, the fixed mould is disc-like, its outer ring surface is bending working surface;End fixed part, the end fixed part is arranged in one side of fixed mould for fixing capillary copper pipe end;And when capillary copper pipe end is fixed by end fixed part, capillary copper pipe is inclined towards the axial direction of fixed mould;Rotary mould, the rotary mould can be with the center of fixed mould as center around fixed mould outer ring surface rotation, to cooperate with fixed mould and bend capillary copper pipe;The rotary mould is synchronously carried out axial motion in the process of around fixed mould rotation, and the direction of its axial motion is consistent with the inclination direction of capillary copper pipe.The utility model in the process of cooperation bending of rotary mould and fixed mould, around fixed mould rotation on one side, synchronously axial motion on one side.Capillary copper pipe is bent according to the set track, and the consistency of bending is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of capillary copper tube bending technology, and in particular relates to a tooling for manually bending capillary copper. Background Technology

[0002] Copper and copper alloy capillary tubes, also known as pure copper capillary tubes, are seamless tubes produced by pressing and drawing. They are strong, corrosion-resistant, lightweight, have good thermal conductivity, and high low-temperature strength. They are commonly used in the manufacture of heat exchange equipment (such as condensers). They are also used in oxygen production equipment for assembling cryogenic pipelines. Small-diameter copper capillary tubes are often used to transport pressurized liquids (such as in cooling systems, lubrication systems, and hydraulic systems) and as pressure measuring tubes in instruments.

[0003] like Figure 1 , Figure 2 As shown, some capillary copper tubes used as connectors need to be bent into a complete circle, which is quite difficult. Designing automated equipment would be costly, especially when the demand is small, making it not worthwhile. Utility Model Content

[0004] In view of this, the present invention provides a manual capillary copper tube bending machine, which facilitates manual bending into capillary copper tubes that meet the requirements.

[0005] To solve the above technical problems, the technical solution of this utility model is to use a manual capillary copper tube bending machine, comprising:

[0006] A fixed mold, wherein the fixed mold is disc-shaped and its outer ring surface is a bent working surface;

[0007] An end fixing member is provided on one side of the fixed mold to fix the end of the capillary copper tube; and when the end of the capillary copper tube is fixed by the end fixing member, the capillary copper tube is inclined axially toward the fixed mold.

[0008] A rotating mold, which can rotate around the outer ring surface of a fixed mold with the center of the fixed mold as the center, thereby cooperating with the fixed mold to bend capillary copper tubes;

[0009] The rotating mold moves axially synchronously as it rotates around the fixed mold, and the direction of its axial movement is consistent with the tilting direction of the capillary copper tube.

[0010] As an improvement, during the rotation of the rotating mold around the fixed mold, the distance of its synchronous axial movement is consistent with the outer diameter of the capillary copper tube.

[0011] As an improvement, a drive wheel is also included, which is concentrically arranged with the fixed mold; the rotating mold is fixedly arranged on the end face of the drive wheel.

[0012] As a further improvement, it also includes a screw coaxially arranged with the drive wheel to drive the drive wheel to rotate, the screw being threadedly engaged with the support plate I; the screw is provided with limiting retaining rings at both the front and rear of the support plate I to limit the movement of the support plate I.

[0013] As another further improvement, the limiting ring is threaded with the screw and fixed by a positioning bolt.

[0014] As an improvement, the rear end of the screw is connected to a crank for easy gripping.

[0015] As an improvement, a connecting rod is provided between the screw and the drive wheel, and a support plate II is also provided for supporting the connecting rod, wherein the connecting rod and the support plate II can slide relative to each other.

[0016] As an improvement, a support plate III for supporting the fixed mold is also included, the fixed mold being axially retractable into the support plate III.

[0017] As an improvement, a cylinder for driving the axial movement of the fixed mold is also included.

[0018] As an improvement, the rotating mold is cylindrical with a positioning step at its end.

[0019] The advantages of this utility model are:

[0020] The bending fixture with the above structure allows the rotary die to rotate around the fixed die and move synchronously axially during the bending process. Since the capillary copper tube is not perpendicular to the generatrix of the fixed die in the initial state, but is slightly inclined along the axial direction, it will gradually shift in the inclined direction during the bending process. The axial movement of the rotary die is consistent with this shift direction, ensuring the completion of the bending work.

[0021] The rotary mold described in this invention is cylindrical, with a positioning step at its end. The positioning step positions the capillary copper tube during the bending process, preventing excessive deflection that could lead to an excessively large gap between the two turns of the bent capillary copper tube.

[0022] Furthermore, after the screw engages with the support plate I, it also moves axially synchronously while rotating, thus realizing the predetermined motion pattern of the rotary mold. The two front and rear limiting rings are used to limit the axial movement distance of the rotary mold, and also limit the starting and stopping positions of the rotary mold in the circumferential direction, so that the bent capillary copper tubes have a high degree of consistency. Attached Figure Description

[0023] Figure 1 This is a top view of the bent capillary copper tube.

[0024] Figure 2This is a front view of the bent capillary copper tube.

[0025] Figure 3 This is a schematic diagram illustrating the principle of bending capillary copper tubes according to the present invention.

[0026] Figure 4 This is a schematic diagram showing the tilting of the copper tube during the bending of the capillary copper tube according to the present invention.

[0027] Figure 5 This is a front view of the present invention.

[0028] Figure 6 This is a diagram showing the usage state of the present invention.

[0029] Marked in the image:

[0030] 1. Fixed mold;

[0031] 2. Rotary mold;

[0032] 3. End fasteners;

[0033] 4 drive wheels;

[0034] 5 screws;

[0035] 6. Support plate I;

[0036] 7. Limiting rings;

[0037] 8 positioning bolts;

[0038] 9 cranks;

[0039] 10 connecting rods;

[0040] 11. Support plate II;

[0041] 12 Support Plate III;

[0042] 13 cylinders;

[0043] 14 Support plate IV;

[0044] 100 capillary copper tube. Detailed Implementation

[0045] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to specific embodiments.

[0046] Existing pipe bending devices generally cannot bend more than 360°, meaning they cannot bend beyond a full circle. For example... Figure 1 , Figure 2 As shown, after bending more than a full circle, the two ends of the capillary copper tube 100 will overlap, causing them to be out of plane and making bending difficult. Especially when winding by hand, it is very difficult to control the curvature and angle of the winding.

[0047] To solve the above technical problems, such as Figure 3 As shown, this utility model provides a manual capillary copper tube bending machine, comprising:

[0048] Fixed mold 1, wherein the fixed mold 1 is disc-shaped and its outer ring surface is a bent working surface;

[0049] End fixing member 3 is provided on one side of the fixed mold 1 to fix the end of the capillary copper tube 100; and when the end of the capillary copper tube 100 is fixed by the end fixing member 3, the capillary copper tube 100 is inclined axially toward the fixed mold 1.

[0050] Rotating mold 2, which can rotate around the outer ring surface of fixed mold 1 with the center of fixed mold 1 as the center, thereby cooperating with fixed mold 1 to bend capillary copper tube 100;

[0051] The rotating mold 2 moves axially synchronously during its rotation around the fixed mold 1, and the direction of its axial movement is consistent with the tilting direction of the capillary copper tube 100.

[0052] The principle of this invention is as follows: During the bending process in conjunction with the fixed mold 1, the rotating mold 3 rotates around the fixed mold 1 while simultaneously moving axially. Since the capillary copper tube 100 is not perpendicular to the generatrix of the fixed mold 1 in its initial state, but rather slightly inclined axially, as... Figure 4 As shown, during the bending process, it will gradually shift towards the tilt direction (that is, after one revolution, the two ends of the capillary copper tube 100 are not on the same plane, but are offset from each other), and the axial movement direction of the rotating mold 2 is consistent with this offset direction, ensuring the completion of the bending work.

[0053] In addition, in this embodiment, the rotating mold 2 is cylindrical, and its end is provided with a positioning step. The positioning step positions the capillary copper tube during the bending process, preventing excessive deflection that would cause the gap between the two turns of the bent capillary copper tube to be too large.

[0054] To ensure the spacing between the two turns of the bent capillary copper tube 100, the distance of synchronous axial movement of the rotating mold around the fixed mold 1 (2) during one revolution is consistent with the outer diameter of the capillary copper tube 100. This ensures that the two turns of the bent capillary copper tube 100 are tightly attached to each other.

[0055] like Figure 4 As shown, in order to facilitate the rotation of the rotating mold 2, this embodiment also includes a drive wheel 4, which is concentrically arranged with the fixed mold 1; the rotating mold 2 is fixedly arranged on the end face of the drive wheel 4.

[0056] In order to provide synchronous axial movement of the rotating mold 2, this embodiment also includes a screw 5 coaxially arranged with the drive wheel 4 for driving the drive wheel 4 to rotate. The screw 5 is threadedly engaged with the support plate I6. The screw 5 is provided with limiting rings 7 at both the front and rear of the support plate I6 to limit the movement.

[0057] After the screw 5 engages with the support plate I6, it will rotate and move axially synchronously, thus realizing the predetermined motion mode of the rotating mold 2. The two limiting rings 7 at the front and rear are used to limit the distance of the axial movement of the rotating mold 2, and also limit the starting position and stopping position of the rotating mold 2 in the circumferential direction, so that the bent capillary copper tube 100 has a high degree of consistency.

[0058] In addition, the limiting ring 7 described in this embodiment is threadedly engaged with the screw 5 and fixed by the positioning bolt 8. This arrangement makes the position of the limiting ring 7 adjustable, thereby adjusting the movement trajectory of the rotating mold 2.

[0059] Of course, it is foreseeable that after the screw 5 is connected to the crank 9 which is easy to hold, the screw 5 can be easily rotated manually to perform the bending work of the capillary copper tube 100.

[0060] In some implementations, a connecting rod 10 is provided between the screw 5 and the drive wheel 4, and a support plate II11 is also provided for supporting the connecting rod 10. The connecting rod 10 and the support plate II11 can slide relative to each other to prevent the screw 5 from deviating.

[0061] To facilitate material unloading, a support plate III12 is also included to support the fixed mold 1. The fixed mold 1 can be axially retracted into the support plate III12. When the fixed mold 1 retracts into the support plate III12, the bent capillary copper tube 100 naturally falls off the fixed mold 1, saving unloading time and improving work efficiency.

[0062] In this embodiment, in order to realize the extension and retraction of the fixed mold 1, a cylinder 13 for driving the axial movement of the fixed mold 1 is also included. The cylinder 13 is supported by a support plate IV14.

[0063] like Figure 5 , Figure 6As shown, during bending, the end of the capillary copper tube 100 is inserted into the slot of the end fixing member 3. Initially, the capillary copper tube 100 is not perpendicular to the generatrix of the fixed mold 1, but has a certain angle of inclination, and is clamped by the fixed mold 1 and the rotating mold 2. The operator drives the screw 5 to rotate via the crank 9. Due to the presence of the limiting retaining ring 7, the rotating mold 2 rotates exactly one revolution around the fixed mold 1 and moves axially a certain distance, which is consistent with the outer diameter of the capillary copper tube 100. Since the capillary copper tube 100 is inclined in the initial state, the bending trajectory will deviate in the inclined direction. The axial movement direction of the rotating mold 2 is consistent with this deviated direction, and due to the positioning effect of the positioning step 21, the capillary copper tube 100 is bent according to the set trajectory, forming a shape as shown in the image. Figure 1 , Figure 2 The shape shown.

[0064] The above are merely preferred embodiments of this utility model. It should be noted that the above preferred embodiments should not be considered as limitations on this utility model, and the scope of protection of this utility model should be determined by the scope defined in the claims. For those skilled in the art, several improvements and modifications can be made without departing from the spirit and scope of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A hand bender for capillary copper tubes, characterized in that include: A fixed mold, wherein the fixed mold is disc-shaped and its outer ring surface is a bent working surface; An end fixing member is provided on one side of the fixed mold to fix the end of the capillary copper tube; and when the end of the capillary copper tube is fixed by the end fixing member, the capillary copper tube is inclined axially toward the fixed mold. A rotating mold, which can rotate around the outer ring surface of a fixed mold with the center of the fixed mold as the center, thereby cooperating with the fixed mold to bend capillary copper tubes; The rotating mold moves axially synchronously during the rotation around the fixed mold, and the direction of its axial movement is consistent with the tilting direction of the capillary copper tube. It also includes a drive wheel, which is concentrically arranged with the fixed mold; the rotating mold is fixedly arranged on the end face of the drive wheel.

2. A manual capillary copper tube bending machine according to claim 1, characterized in that: During the rotation of the rotating mold around the fixed mold, the distance of its synchronous axial movement is consistent with the outer diameter of the capillary copper tube.

3. The manual capillary copper tube bending machine according to claim 1, characterized in that: It also includes a screw coaxially arranged with the drive wheel to drive the drive wheel to rotate, the screw being threadedly engaged with the support plate I; the screw is provided with limiting retaining rings at both the front and rear of the support plate I to limit the movement of the support plate I.

4. A manual capillary copper tube bending machine according to claim 3, characterized in that: The limiting retaining ring is threaded with the screw and fixed by the positioning bolt.

5. A manual capillary copper tube bending machine according to claim 3, characterized in that: The rear end of the screw is connected to a crank for easy gripping.

6. A manual capillary copper tube bending machine according to claim 4, characterized in that: A connecting rod is provided between the screw and the drive wheel, and a support plate II is also provided for supporting the connecting rod. The connecting rod and the support plate II can slide relative to each other.

7. A manual capillary copper tube bending machine according to claim 1, characterized in that: It also includes a support plate III for supporting the fixed mold, which can be axially retracted into the support plate III.

8. A manual capillary copper tube bending machine according to claim 7, characterized in that: It also includes cylinders for driving the axial movement of the fixed mold.

9. A manual capillary copper tube bending machine according to claim 1, characterized in that: The rotating mold is cylindrical, with a positioning step at its end.

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