Multifunctional forming cutting die for condenser pipe

Abstract

The utility model discloses a condenser pipe multifunctional forming cutting die, which comprises a forming core, a necking die holder and a necking die body, a mounting hole is arranged in the necking die holder, the necking die body is positioned in the mounting hole and is fixed with the necking die holder, a forming hole is arranged in the necking die body, and the forming core is arranged in the forming hole. The forming core is located in the forming hole and fixed to the necking die base, a forming guide structure is arranged between an orifice of the forming hole and the end of the forming core, a sliding hole communicated with the forming hole is formed in the necking die body, and a dotting pin is arranged in the sliding hole. And the necking die body is provided with a pressing sleeve for driving the dotting pin to move so as to punch a hole in the condenser pipe and a resetting mechanism for resetting the dotting pin. The pipe diameter of a copper pipe can be reduced through the cooperation of the necking die body and the forming core, meanwhile, a positioning point can be punched on the shrunk copper pipe by extruding the dotting pin through the pressing sleeve, therefore, one-time positioning is achieved, the processes of pipe necking and dotting can be completed at the same time, dotting can be completed without additional power, cost is greatly saved, and the production efficiency is improved. And the time is saved, so that the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a condenser tube processing device, in particular to a condenser tube multifunctional forming knife die. Background Art

[0002] Condenser is a common heat exchange pipe in air conditioner. There are many kinds of condenser. Now there is a condenser with the following structure: its end is composed of three sections with different diameters from small to large, and there are positioning points on the sections. The above condenser is generally made of copper tube. The copper tube needs to be reduced to several sections from large to small by different tube molds of the tube shrinking machine, and then the positioning points are marked on the tube section by the marking machine.

[0003] Therefore, the processing of the above-mentioned structure of the condenser tube needs to be completed by using two kinds of equipment, which not only makes the transfer and positioning troublesome, but also has low production efficiency, thereby high production cost. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a multifunctional forming knife die for a condenser tube.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The multifunctional forming knife die for condenser is characterized in that it includes a forming core, a shrinking die base and a shrinking die body, the shrinking die base is provided with a mounting hole, the shrinking die body is located in the mounting hole and is fixed to the shrinking die base, the shrinking die body is provided with a forming hole, the forming core is located in the forming hole and is fixed to the shrinking die base, a forming guide structure is provided between the orifice of the forming hole and the end of the forming core, the shrinking die body is provided with a sliding hole that passes through the forming hole, a dotting pin is provided in the sliding hole, the shrinking die body is provided with a pressing sleeve that drives the dotting pin to move and punch a hole on the condenser, and a resetting mechanism that resets the dotting pin.

[0007] A core rod connecting screw hole is provided at the bottom of the mounting hole, and a connecting stud connected to the core rod connecting screw hole is provided at the end of the forming core.

[0008] The forming guide structure comprises a conical body arranged at the end of the forming core and a conical hole arranged at the opening of the forming hole, the large opening of the conical hole faces outward, and the end of the conical body with a larger diameter faces outward.

[0009] The inner hole of the pressing sleeve is a tapered hole and the end of the shrinking die body is a cone that is slidably matched with the tapered hole.

[0010] The reset mechanism includes a reset spring, a limiting boss provided in the sliding hole, and a limiting convex cap provided at the tail end of the striking pin. The reset spring is arranged on the striking pin and one end thereof abuts against the limiting boss and the other end thereof abuts against the limiting convex cap. The sliding hole is arranged on the cone.

[0011] The top surface of the limiting convex cap is an inclined arc surface with the same inclination angle as the hole wall of the inner hole.

[0012] The beneficial effects of the utility model are as follows: the utility model can reduce the diameter of the copper tube by the cooperation of the shrinking die body and the forming core, and at the same time can mark the positioning points on the shrunk copper tube by pressing the sleeve to extrude the dotting pin, thereby realizing one-time positioning and completing the shrinking and dotting processes at the same time, and the dotting can be completed without the need for additional power, which greatly saves costs and time, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 It is the overall structural view of the utility model;

[0015] Figure 2 It is a cross-sectional structural view of the utility model. DETAILED DESCRIPTION

[0016] The advantages and features of the present disclosure and its implementation methods will be explained by the following embodiments described with reference to the accompanying drawings. However, the present disclosure can be embodied in different forms and should not be interpreted as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure will be comprehensive and complete, and will fully convey the scope of the present disclosure to those skilled in the art. In addition, the present disclosure is limited only by the scope of the claims.

[0017] The shapes, sizes, ratios, angles and numbers disclosed in the drawings for describing the embodiments of the present disclosure are only examples, and therefore the present disclosure is not limited to the details shown. Throughout this specification, the same reference numerals refer to the same elements. In the following description, when the detailed description of the relevant known functions or configurations is determined to be unnecessary to blur the focus of the present disclosure, the detailed description will be omitted. In the case of using "including", "having" and "comprising" described in this specification, other parts may be added unless "only" is used. Unless otherwise indicated, the terms in the singular may include plural forms.

[0018] When explaining an element, although not explicitly described, the element is understood to include a range of error.

[0019] When describing a positional relationship, for example, when the positional relationship is described as "on," "above," "below," and "adjacent to," unless "immediately" or "directly" is used, one or more parts may be arranged between two other parts.

[0020] When describing a time relationship, for example, when a time sequence is described as “after,” “subsequently,” “next,” and “before,” discontinuous cases may be included unless “just” or “directly” is used.

[0021] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from other elements. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present disclosure.

[0022] As those skilled in the art can fully understand, the features of the different embodiments of the present disclosure can be coupled or combined with each other in part or in whole, and can cooperate with each other in various ways and be driven technically. The embodiments of the present disclosure can be performed independently of each other, or can be performed together in a mutually dependent relationship.

[0023] Reference Figure 1 , Figure 2 The utility model discloses a multifunctional forming knife die for a condenser, comprising a forming core 1, a shrinking die base 2 and a shrinking die body 3. The shrinking die base 2 is provided with a mounting hole, the shrinking die body 3 is located in the mounting hole and is fixed to the shrinking die base 2. The above fixation is preferably a threaded connection, there are threads in the mounting hole, and there are threads on the outer wall of the die body. The above structure is not only convenient for processing, but also convenient for assembly and disassembly.

[0024] A forming hole 4 is provided in the shrinking die body 3, and the aperture size of the forming hole 4 is the size of the diameter of the copper tube to be shrunk. The forming core 1 is located in the forming hole 4 and is fixed to the shrinking die base 2. The forming core 1 is supported internally to prevent the copper tube from sinking when shrinking, and can ensure that the inner diameter of the copper tube is uniform. A core rod connecting screw hole is provided at the bottom of the mounting hole, and a connecting stud 5 connected to the core rod connecting screw hole is provided at the end of the forming core 1. The above structure is not only convenient for processing, but also convenient for assembly and disassembly.

[0025] A forming guide structure is provided between the orifice of the forming hole 4 and the end of the forming core 1. Specifically, the forming guide structure comprises a conical body 6 provided at the end of the forming core 1 and a conical hole 7 provided at the orifice of the forming hole 4. The gap between the conical hole 7 and the conical body is slightly larger than the thickness of the copper tube. The large mouth of the conical hole 7 faces outward, and the end with a larger diameter of the conical body faces outward. The copper tube is inserted from the large mouth of the conical hole 7 and is slowly shrunk to a predetermined aperture through the extrusion guidance of the conical hole 7. Of course, the conical body also cooperates with the conical hole 7 to slowly support the tube wall of the copper tube and guide the inner hole of the copper tube to reach a predetermined size.

[0026] As shown in the figure, the shrinking mold body 3 is provided with a sliding hole that passes through the forming hole 4, and a punching pin 8 is provided in the sliding hole. The shrinking mold body 3 is provided with a pressing sleeve 9 that drives the punching pin 8 to move and punch a hole on the condensing tube, and a resetting mechanism that resets the punching pin 8. The condensing tube is preferably a copper tube. Its specific structure is that the inner hole of the pressing sleeve 9 is a tapered hole and the end of the shrinking die body 3 is a cone that slides with the tapered hole, and the dotting pin 8 is gradually squeezed and punched by changing the diameter of the tapered hole. The reset mechanism includes a reset spring 10, a limiting boss 11 provided in the sliding hole, and a limiting convex cap 12 provided at the tail end of the dotting pin 8. The reset spring 10 is arranged on the dotting pin 8 and one end is against the limiting boss 11, and the other end is against the limiting convex cap 12, and the sliding hole is arranged on the cone. The above structure can ensure that the reset spring 10 can achieve the reset function. The top surface of the limiting convex cap 12 is an inclined arc surface with the same inclination angle as the hole wall of the inner hole, so that the top surface can be completely in contact with the hole wall of the inner hole, thereby reducing the point contact pressure, reducing the wear of the components, and the force is evenly distributed.

[0027] The copper tube of the present application is fixed on the mold, and the cutter head is driven to move as a whole by a driving system. The driving system is a system composed of a conventional motor, a reducer, a screw assembly and a guide rail assembly, so that the cutter head as a whole moves toward the end of the copper tube. After moving into place, the end of the copper tube will be inserted into the forming hole 4, and then the driving system drives the cutter head to continue to move until all the copper tubes of a predetermined length are completely shrunk. When the cutter head moves to a point close to the mold, the end face of the pressing sleeve 9 will be squeezed with the mold, so that the pressing sleeve 9 will move relative to the shrinking mold body 3, thereby gradually squeezing the dotting pin 8 to move into the forming hole 4 during the movement, so that the dotting pin 8 dots the copper tube. When the cutter head is reset, the dotting pin 8 will also be reset under the action of the reset spring 10, and at the same time squeeze the sub-sleeve to reset it. Of course, in order to prevent the pressing sleeve 9 from completely disengaging, a limiting convex surface is provided in the inner hole of the pressing sleeve 9, and the limiting convex surface can be stuck with the limiting convex cap 12 of the dotting pin 8, thereby preventing the pressing sleeve 9 from completely disengaging.

[0028] The above is a detailed introduction to a multifunctional forming knife die for a condenser tube provided in an embodiment of the utility model. Specific examples are used in this article to illustrate the principle and implementation mode of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model; at the same time, for general technical personnel in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. The multifunctional forming die for condenser tube is characterized by: It includes a molding core, a shrinking die base and a shrinking die body, wherein the shrinking die base is provided with a mounting hole, the shrinking die body is located in the mounting hole and is fixed to the shrinking die base, the shrinking die body is provided with a molding hole, the molding core is located in the molding hole and is fixed to the shrinking die base, a molding guide structure is provided between the orifice of the molding hole and the end of the molding core, the shrinking die body is provided with a sliding hole that passes through the molding hole, the sliding hole is provided with a striking pin, the shrinking die body is provided with a pressing sleeve that drives the striking pin to move and punch a hole on the condenser, and a resetting mechanism that resets the striking pin.

2. The multifunctional forming die for condenser tube according to claim 1, characterized in that: A core rod connecting screw hole is provided at the bottom of the mounting hole, and a connecting stud connected to the core rod connecting screw hole is provided at the end of the forming core.

3. The multifunctional forming die for condenser tube according to claim 1, characterized in that: The forming guide structure comprises a conical body arranged at the end of the forming core and a conical hole arranged at the opening of the forming hole, the large opening of the conical hole faces outward, and the end of the conical body with a larger diameter faces outward.

4. The multifunctional forming die for condenser tube according to claim 1, characterized in that: The inner hole of the pressing sleeve is a tapered hole and the end of the shrinking die body is a cone that is slidably matched with the tapered hole.

5. The multifunctional forming die for condenser tube according to claim 4, characterized in that: The reset mechanism includes a reset spring, a limiting boss provided in the sliding hole, and a limiting convex cap provided at the tail end of the striking pin. The reset spring is arranged on the striking pin and one end thereof abuts against the limiting boss and the other end thereof abuts against the limiting convex cap. The sliding hole is arranged on the cone.

6. The multifunctional forming die for condenser tube according to claim 5, characterized in that: The top surface of the limiting convex cap is an inclined arc surface with the same inclination angle as the hole wall of the inner hole.

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