Pipe orifice reaming device for capillary copper pipe

Abstract

The utility model provides a capillary copper pipe orifice chambering device which comprises a clamping mechanism and a chambering mechanism, the clamping mechanism vertically clamps a copper pipe, the chambering mechanism is arranged above the clamping mechanism, the chambering mechanism comprises a chambering air cylinder and a chambering die, the chambering air cylinder is vertically arranged downwards, the chambering die is arranged below the chambering air cylinder, and the chambering air cylinder is arranged below the chambering die. The chambering die is installed on the top of a piston rod of the chambering air cylinder, the chambering air cylinder drives the chambering die to push the pipe opening of the copper pipe, the capillary pipe is fixed through the clamping mechanism, and the pipe opening of the copper pipe is automatically expanded in the mode that the chambering air cylinder pushes the chambering die. And the reaming efficiency is high, and due to full-process automatic operation, high quality consistency is achieved.

Description

Technical Field

[0001] This utility model relates to the field of capillary manufacturing, and in particular to a device for expanding the orifice of a capillary copper tube. Background Technology

[0002] Copper capillary tubes are widely used in the HVAC industry. When installing and using capillary tubes, it is often necessary to enlarge the orifice of the capillary tube. Currently, the enlargement of capillary tubes is mostly done manually. However, due to the small diameter and softness of the capillary tube, the operator's enlargement efficiency is low and the quality of the enlarged product is inconsistent. Utility Model Content

[0003] The technical problem to be solved by this utility model is that the existing capillary copper tube enlargement operation is inefficient and has poor quality consistency. This utility model provides a capillary copper tube enlargement device to solve the above problems.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a device for expanding the opening of a capillary copper tube, including a clamping mechanism and an expanding mechanism. The clamping mechanism vertically clamps the copper tube, and the expanding mechanism is located above the clamping mechanism. The expanding mechanism includes an expanding cylinder and an expanding mold. The expanding cylinder is vertically downward, and the expanding mold is installed on the top of the piston rod of the expanding cylinder. The expanding cylinder drives the expanding mold to push towards the opening of the copper tube.

[0005] Further: The reaming mold includes a base and a press-in seat disposed above the base. A guide rod is fixedly disposed on the base in a vertical direction. The guide rod passes through the press-in seat. A limit step is provided at the end of the guide rod. The press-in seat slides along the guide rod. A positioning hole is provided in the middle of the base. The copper tube clamped on the clamping mechanism passes through the positioning hole from below. The press-in seat is fixedly mounted on the piston rod of the reaming cylinder. A reaming mandrel is fixedly disposed on the lower end face of the press-in seat, corresponding to the opening of the copper tube. A transition step is provided on the reaming mandrel. A return spring is provided between the press-in seat and the base.

[0006] Furthermore: a lower spring seat is provided on the base, an upper spring seat is provided on the press-in seat, and the return spring is respectively sleeved on the upper spring seat and the lower spring seat, pushing the press-in seat upward.

[0007] Furthermore: the clamping mechanism includes a clamping fixed seat, a clamping movable seat, and a clamping cylinder. The clamping fixed seat and the clamping cylinder are fixedly installed. The clamping movable seat is installed on the clamping cylinder and is pushed towards the clamping fixed seat under the drive of the clamping cylinder. The clamping fixed seat and the clamping movable seat have clamping grooves for clamping the copper tube radially.

[0008] Furthermore, a guide sleeve is provided radially on the press-in seat, and the guide rod is slidably inserted into the guide sleeve.

[0009] The beneficial effects of this utility model are that the capillary copper tube end-expansion device of this utility model uses a clamping mechanism to fix the capillary tube and uses an expansion cylinder to push the expansion mold to automatically expand the end of the copper tube. The expansion efficiency is high, and because the whole process is automated, it has high quality consistency. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Figure 1 This is a schematic diagram of the structure of a capillary copper tube orifice enlarging device during the orifice enlarging process according to this utility model.

[0012] Figure 2 This is a partial structural diagram of the hole-expanding mold after hole expansion has been completed;

[0013] Figure 3 This is a top view of the clamping mechanism when it clamps the copper tube.

[0014] In the diagram: 1. Clamping structure; 2. Copper tube; 3. Hole-expanding cylinder; 4. Hole-expanding mold; 5. Base; 6. Press-in seat; 7. Guide rod; 8. Limiting step; 9. Positioning hole; 10. Hole-expanding mandrel; 11. Transition step; 12. Return spring; 13. Lower spring seat; 14. Upper spring seat; 15. Clamping fixed seat; 16. Clamping movable seat; 17. Clamping cylinder; 18. Clamping groove; 19. Guide sleeve. Detailed Implementation

[0015] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. Rather, the embodiments of this utility model include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0016] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0017] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0018] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of the present invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order according to the functions involved, as should be understood by those skilled in the art to which embodiments of the present invention pertain.

[0019] like Figure 1-3 As shown, this utility model provides a device for expanding the opening of a capillary copper tube 2, including a clamping mechanism 1 and an expanding mechanism. The clamping mechanism vertically clamps the copper tube 2, and the expanding mechanism is located above the clamping mechanism 1. The expanding mechanism includes an expanding cylinder 3 and an expanding mold 4. The expanding cylinder 3 is vertically downward, and the expanding mold 4 is installed on the top of the piston rod of the expanding cylinder 3. The expanding cylinder 3 drives the expanding mold 4 to push towards the opening of the copper tube 2.

[0020] The enlarging device for the capillary copper tube 2 is used to enlarge the opening of the copper tube 2. Considering the small diameter of the capillary copper tube 2, this application employs a vertical enlarging operation. First, the copper tube 2 is fixed vertically using a clamping mechanism 1. Then, an enlarging cylinder 3 pushes the enlarging mold 4 towards the opening of the copper tube 2, expanding the opening. This method avoids the problems of low structural strength and softness of the capillary copper tube 2, and achieves a high-quality opening formation. After the opening expansion is complete, the enlarging cylinder 3 retracts the enlarging mold 4, eliminating the need for manual mold removal and resulting in high operational efficiency.

[0021] The enlarging mold 4 includes a base 5 and a press-in seat 6 disposed above the base 5. A guide rod 7 is fixedly disposed on the base 5 in the vertical direction. The guide rod 7 passes through the press-in seat 6. A limit step 8 is provided at the end of the guide rod 7. The press-in seat 6 slides along the guide rod 7.

[0022] The base 5 has a positioning hole 9 in the middle. The copper tube 2 clamped on the clamping mechanism 1 passes through the positioning hole 9 from below. The press-in seat 6 is fixedly installed on the piston rod of the reaming cylinder 3. A reaming mandrel 10 is fixedly installed on the lower end face of the press-in seat 6, corresponding to the opening of the copper tube 2. A transition step 11 is provided on the reaming mandrel 10. A return spring 12 is provided between the press-in seat 6 and the base 5.

[0023] The expanding die 4 is used to expand the opening of the copper tube 2. The specific operation process is as follows: The expanding die 4 moves downward to the copper tube 2 until the copper tube 2 is inserted into the positioning hole 9 for positioning. The piston rod of the expanding cylinder 3 will continue to push the pressing seat 6 downward. The pressing seat 6 will overcome the thrust of the return spring 12 and continue to move towards the base 5. The expanding mandrel 10 is aligned with the opening of the copper tube 2. The expanding mandrel 10 can be gradually inserted into the opening of the copper tube 2 under the push of the expanding cylinder 3. The diameter of the part of the expanding mandrel 10 near the upper end is larger than the existing inner diameter of the copper tube 2. Under the guidance of the transition step 11, it gradually expands the inner diameter of the copper tube 2 until the expanding work is completed.

[0024] After the hole enlargement is completed, the piston rod of the hole enlargement cylinder 3 moves upward and retracts, pulling the hole enlargement mandrel 10 out of the opening of the copper tube 2. As the pressing seat 6 continues to move upward, the return spring 12 pushes the pressing seat 6 and the base 5 apart, and the positioning hole 9 moves away from the copper tube 2. The clamping frame releases the copper tube 2 and removes the copper tube 2, thus completing a complete hole enlargement operation.

[0025] The base 5 is provided with a lower spring seat 13, and the press-in seat 6 is provided with an upper spring seat 14. The reset spring 12 is respectively sleeved on the upper spring seat 14 and the lower spring seat 13, and pushes the press-in seat 6 upward.

[0026] The upper spring seat 14 and the lower spring seat 13 can limit the return spring 12 to prevent movement and ensure that the return spring 12 applies force in the vertical direction, ensuring the normal operation of the hole enlargement process. The clamping mechanism 1 includes a clamping fixed seat 15, a clamping movable seat 16, and a clamping cylinder 17. The clamping fixed seat 15 and the clamping cylinder 17 are fixedly installed. The clamping movable seat 16 is installed on the clamping cylinder 17 and is pushed towards the clamping fixed seat 15 under the drive of the clamping cylinder 17. The clamping fixed seat 15 and the clamping movable seat 16 have clamping grooves 18 for clamping the copper tube 2 radially.

[0027] The extension and retraction of the clamping cylinder 17 will drive the movement of the clamping movable seat 16, which can realize the opening and closing of the clamping groove 18, and realize the opening and closing and clamping of the copper tube 2. This structure is easy to control and can ensure a stable clamping effect.

[0028] A guide sleeve 19 is radially arranged on the press-in seat 6, and the guide rod 7 is slidably inserted into the guide sleeve 19. The guide sleeve 19 can provide good guidance for the guide rod 7, provide sufficient support for the guide rod 7, and ensure the guiding effect of the guide rod 7.

[0029] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A device for expanding the orifice of a capillary copper tube (2), characterized in that: It includes a clamping mechanism (1) and a hole-expanding mechanism. The clamping mechanism vertically clamps the copper tube (2). The hole-expanding mechanism is located above the clamping mechanism (1). The hole-expanding mechanism includes a hole-expanding cylinder (3) and a hole-expanding mold (4). The hole-expanding cylinder (3) is set vertically downward. The hole-expanding mold (4) is installed on the top of the piston rod of the hole-expanding cylinder (3). The hole-expanding cylinder (3) drives the hole-expanding mold (4) to push towards the opening of the copper tube (2).

2. The capillary copper tube (2) orifice enlarging device as described in claim 1, characterized in that: The enlarging mold (4) includes a base (5) and a press-in seat (6) disposed above the base (5). A guide rod (7) is fixedly disposed on the base (5) in the vertical direction. The guide rod (7) passes through the press-in seat (6). A limit step (8) is provided at the end of the guide rod (7). The press-in seat (6) slides along the guide rod (7). The base (5) has a positioning hole (9) in the middle, and the copper tube (2) clamped on the clamping mechanism (1) passes through the positioning hole (9) from below. The press-in seat (6) is fixedly installed on the piston rod of the reaming cylinder (3); a reaming mandrel (10) is fixedly provided on the lower end face of the press-in seat (6) corresponding to the opening of the copper tube (2); a transition step (11) is provided on the reaming mandrel (10). A return spring (12) is provided between the press-in seat (6) and the base (5).

3. The capillary copper tube (2) orifice enlarging device as described in claim 2, characterized in that: The base (5) is provided with a lower spring seat (13), the press-in seat (6) is provided with an upper spring seat (14), the reset spring (12) is respectively sleeved on the upper spring seat (14) and the lower spring seat (13), and pushes the press-in seat (6) upward.

4. The capillary copper tube (2) orifice enlarging device as described in claim 3, characterized in that: The clamping mechanism (1) includes a clamping fixed seat (15), a clamping movable seat (16), and a clamping cylinder (17). The clamping fixed seat (15) and the clamping cylinder (17) are fixedly installed. The clamping movable seat (16) is installed on the clamping cylinder (17) and pushes against the clamping fixed seat (15) under the drive of the clamping cylinder (17). The clamping fixed seat (15) and the clamping movable seat (16) have clamping grooves (18) for clamping the copper tube (2) radially.

5. The capillary copper tube (2) orifice enlarging device as described in claim 3, characterized in that: The press-in seat (6) is provided with a guide sleeve (19) along the radial direction, and the guide rod (7) is slidably inserted into the guide sleeve (19).

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