Capillary copper pipe bending device

Abstract

The utility model discloses a capillary copper pipe bending device. The capillary copper pipe bending device comprises a fixed die with at least one section of cambered surface and an end fixing piece arranged on one side of the fixed die and used for fixing the end of a capillary copper pipe to be bent. And the rotary die can rotate around the fixed die cambered surface by taking the circle center of the fixed die cambered surface as the center. According to the capillary copper pipe bending device with the structure, the rotating die is matched with the cambered surface of the fixed die, so that the capillary copper pipe is bent into an arc shape when the rotating die rotates around the fixed die, and the radian of the bent capillary copper pipe is consistent with that of the cambered surface of the fixed die, so that the consistency after bending is ensured, and the bending quality is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of capillary copper tube bending, in particular to a device for bending a capillary copper tube. Background Art

[0002] Copper and copper alloy capillaries, also known as copper capillaries, are a type of pressed and drawn seamless tubes that are strong and corrosion-resistant, lightweight, with good thermal conductivity and high low-temperature strength. They are often used to manufacture heat exchange equipment (such as condensers, etc.). They are also used to assemble low-temperature pipelines in oxygen production equipment. Copper capillaries with small diameters are often used to transport pressurized liquids (such as cooling systems, lubrication systems, oil pressure systems, etc.) and as pressure measuring tubes for instruments.

[0003] Some capillary copper tubes used as joints need to be bent into an arc. Currently, they are all bent manually, and the bending efficiency and consistency after bending are difficult to ensure, which affects product quality. Utility Model Content

[0004] In view of this, the utility model provides a capillary copper tube bending device, which is convenient for bending the capillary copper tube.

[0005] In order to solve the above technical problems, the technical solution of the utility model is to adopt a capillary copper tube bending device, including a fixed mold having at least one arc surface, and an end fixing piece arranged on one side of the fixed mold for fixing the end of the capillary copper tube to be bent; it also includes a rotating mold, and the rotating mold can rotate around the arc surface of the fixed mold with the center of the arc surface of the fixed mold as the center.

[0006] As an improvement, it also includes a rotary drive device for driving the rotary mold to rotate; the rotary drive device includes a driving gear arranged concentrically with the arc surface of the fixed mold, and the rotary mold is fixed on the end face of the driving gear; it also includes a rack that cooperates with the driving gear to drive the gear to rotate.

[0007] As a further improvement, the rack is driven by a cylinder.

[0008] As another further improvement, a guide groove member is further included for guiding the rack.

[0009] As an improvement, it further comprises a horizontally arranged main shaft, the fixed mold is fixedly sleeved on the main shaft, and the driving gear is movably sleeved on the main shaft and can rotate around the main shaft.

[0010] As an improvement, a hose for hanging the bent capillary copper tube is connected to the main shaft.

[0011] As an improvement, the rotary mold is cylindrical, including an axis and a plastic layer outside the axis.

[0012] As an improvement, an annular groove is provided on the outer ring surface of the fixed mold.

[0013] As an improvement, a slot is provided on the end fixing piece.

[0014] As an improvement, the fixing mold is made of plastic.

[0015] The utility model is beneficial in that:

[0016] The capillary copper tube bending device with the above structure cooperates with the arc surface of the rotating mold and the fixed mold so that when the rotating mold rotates around the fixed mold, the capillary copper tube is bent into an arc shape. The curvature of the capillary copper tube after bending is consistent with the curvature of the arc surface of the fixed mold, thereby ensuring the consistency after bending and ensuring the bending quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional view of the utility model.

[0018] Figure 2 It is a front view of the utility model.

[0019] Figure 3 This is a state diagram used in the present utility model.

[0020] Markings in the figure:

[0021] 1 fixed mold;

[0022] 2 Rotary mold;

[0023] 3 main axis;

[0024] 4 driving gear;

[0025] 5 racks;

[0026] 6 end fixings;

[0027] 7 hose;

[0028] 8. Guide groove member;

[0029] 9 cylinders;

[0030] 100 capillary copper tube. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with specific implementation methods.

[0032] like Figure 1 , Figure 2As shown, the utility model provides a capillary copper tube bending device, including a fixed mold 1 having at least one arc surface, and an end fixing piece 6 arranged on one side of the fixed mold 1 for fixing the end of the capillary copper tube 100 to be bent; and also includes a rotating mold 2, and the rotating mold 2 can rotate around the arc surface of the fixed mold 1 with the center of the arc surface of the fixed mold 1 as the center.

[0033] The principle of the utility model is that the rotating mold 2 cooperates with the arc surface of the fixed mold 1 so that when the rotating mold 2 rotates around the fixed mold 1, the capillary copper tube 100 is bent into an arc shape, and the curvature of the capillary copper tube 100 after bending is consistent with the curvature of the arc surface of the fixed mold 1, thereby ensuring the consistency after bending and ensuring the bending quality.

[0034] When bending, one end of the capillary copper tube 100 is fixed on the end fixing piece 6, and the end is used as a fulcrum for bending. For example, after being fixed by the end fixing piece 6, the capillary copper tube 100 is tangent to the fixed mold, which is a better implementation method. In order to better fix the capillary copper tube 100, a slot is provided on the end fixing piece 6. When in use, it is only necessary to insert the end of the capillary copper tube 100 into the slot, so that the installation and removal of the capillary copper tube 100 are very convenient. It can be foreseen that the bending force direction of the capillary copper tube 100 and the opening direction of the slot should not be in the same straight line to avoid the capillary copper tube from falling off during bending.

[0035] In this embodiment, in order to facilitate driving the rotating mold 2 to rotate, a rotating driving device for driving the rotating mold 2 to rotate is also included; the rotating driving device includes a driving gear 4 that is concentrically arranged with the arc surface of the fixed mold 1, and the rotating mold 2 is fixed on the end face of the driving gear 4; and also includes a rack 5 that cooperates with the driving gear 4 to drive the gear 4 to rotate. The driving gear 4 and the rack 5 cooperate with each other, which can not only facilitate the rotation of the driving gear 4, but also control the rotation angle of the driving gear 4 by the distance of the linear motion of the rack 5, so as to facilitate the control of the curvature of the capillary copper tube 100. Of course, a servo motor or the like can also be used to drive the driving gear to rotate and thus drive the rotating mold, but the servo motor has a high cost and is difficult to maintain, which increases the production cost compared with the gear rack method used in this embodiment.

[0036] In addition, in this embodiment, the air compressor drives the cylinder 9 to drive the rack, thereby facilitating the linear motion distance of the rack 5. In order to prevent the rack 5 from running off, in some embodiments, a guide groove member 8 for guiding the rack 5 is also included.

[0037] More specifically, it also includes a horizontally arranged main shaft 3, the fixed die 1 is disc-shaped, and its outer ring surface is an arc surface for bending the capillary copper tube 100, and is fixedly sleeved on the main shaft 3, and the driving gear 4 is movably sleeved on the main shaft 3 and can rotate around the main shaft 3. The fixed die 1 and the driving gear 4 are coaxially arranged to ensure that the rotating die 2 fixed on the end surface of the driving gear 4 can rotate about the center of the arc surface of the fixed die 1, thereby ensuring the bending quality.

[0038] In order to improve work efficiency, in this embodiment, the main shaft 3 is connected with a hose 7 for hanging the bent capillary copper tube 100. The operator hangs the bent capillary copper tube 100 on the hose 7, so that the capillary copper tube 100 is arranged neatly.

[0039] For example, to avoid damage to the surface of the capillary copper tube 100 during the bending process, the fixed mold 1 is made of plastic, and the rotating mold 2 is cylindrical, including an axis and a plastic layer outside the axis. In addition, in order to prevent the capillary copper tube 100 from deviating during the bending process, an annular groove is opened on the outer ring surface of the fixed mold 1 for positioning the capillary copper tube 100.

[0040] like Figure 3 As shown, when the capillary copper tube 100 needs to be bent, the end of the capillary copper tube 100 is first inserted into the slot of the end fixing member 6, and the capillary copper tube 100 is clamped by the fixed mold 1 and the rotating mold 2. The driving rack 5 moves, so that the driving gear 4 rotates accordingly, thereby driving the rotating mold 2 to rotate around the outer ring surface of the fixed mold 1. During the rotation process, the rotating mold 2 bends the capillary copper tube 100 along the outer ring surface of the fixed mold 1, thereby achieving the effect of bending the capillary copper tube.

[0041] The above are only preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be regarded as limiting the present invention. The protection scope of the present invention should be based on the scope defined by the claims. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A capillary copper tube bending device, characterized in that: It includes a fixed mold with at least one arc surface, and an end fixing piece arranged on one side of the fixed mold for fixing the end of the capillary copper tube to be bent; it also includes a rotating mold, which can rotate around the fixed mold arc surface with the center of the fixed mold arc surface as the center.

2. A capillary copper tube bending device according to claim 1, characterized in that: It also includes a rotary drive device for driving the rotary mold to rotate; the rotary drive device includes a driving gear concentrically arranged with the fixed mold arc surface, and the rotary mold is fixed on the end face of the driving gear; and also includes a rack that cooperates with the driving gear to drive the gear to rotate.

3. A capillary copper tube bending device according to claim 2, characterized in that: The rack is driven by a cylinder.

4. A capillary copper tube bending device according to claim 2, characterized in that: Also included is a guide groove member for guiding the rack.

5. The capillary copper tube bending device according to claim 2, characterized in that: It also includes a horizontally arranged main shaft, the fixed mold is fixedly sleeved on the main shaft, and the driving gear is movably sleeved on the main shaft and can rotate around the main shaft.

6. A capillary copper tube bending device according to claim 5, characterized in that: The main shaft is connected with a hose for hanging the bent capillary copper tube.

7. The capillary copper tube bending device according to claim 1, characterized in that: The rotary mold is cylindrical and comprises an axis and a plastic layer outside the axis.

8. The capillary copper tube bending device according to claim 1, characterized in that: An annular groove is formed on the outer ring surface of the fixed mold.

9. The capillary copper tube bending device according to claim 1, characterized in that: The end fixing piece is provided with a slot.

10. The capillary copper tube bending device according to claim 1, characterized in that: The fixed mold is made of plastic.

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