Efficient special-shaped tooth internal thread copper pipe spinning forming ring

Abstract

The utility model relates to the technical field of spinning forming rings for internal-thread copper pipes, in particular to an efficient spinning forming ring for internal-thread copper pipes with special-shaped teeth, which comprises a left pressing ring sleeve and a right pressing ring sleeve, and is characterized in that a ball fixing sleeve is arranged on the right side of the left pressing ring sleeve; limiting grooves are formed in the upper side and the lower side of the interior of the ball fixing sleeve in a bilateral symmetry mode, a plurality of sets of releasing holes which are communicated are formed in the positions, corresponding to the limiting grooves, of the upper side and the lower side of the ball fixing sleeve, and releasing ejector pins are arranged in the releasing holes. The retaining ring can limit the distance between the steel balls, the steel balls are limited and fixed through clamping connection of the limiting gasket and the ball fixing sleeve, the stable position and the motion range of the steel balls in the spinning process are guaranteed, it is guaranteed that contact between the steel balls and the copper pipe is kept at the proper position all the time, uniform pressure is applied to the copper pipe, and the copper pipe is prevented from being damaged. Therefore, the consistency of deformation of the copper pipe in the pressing process is guaranteed, and the machining precision of products is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of spin forming rings of internally threaded copper tubes, specifically a high-efficiency spin forming ring of internally threaded copper tubes with irregular teeth. Background Technology

[0002] Internally threaded copper tubes, also known as non-smooth tubes, refer to copper tubes with a smooth outer surface and a certain number and regular number of internally threaded threads on the inner surface. When performing the spinning process on internally threaded copper tubes, an internally threaded copper tube spinning device is usually used.

[0003] Existing copper tube spinning devices generally include a split spinning ring and multiple balls located inside the spinning ring. The spinning ring drives the balls to rotate at high speed to spin the copper tube. However, since the multiple balls are freely dispersed in the annular groove of the split spinning ring, when the diameter of the inscribed circle is too large, there may be a positional offset between the steel balls. This causes the steel balls to apply different radial pressures, resulting in inconsistent deformation of the copper tube and making it impossible to guarantee the processing accuracy of the steel tube spinning.

[0004] Therefore, it is particularly important to design a high-efficiency non-circular toothed internal thread copper tube spinning ring to overcome the above-mentioned technical defects and improve the overall practicality. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency irregular-shaped internal thread copper tube spin-formed ring to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A high-efficiency irregular-shaped internal thread copper tube spin-formed ring includes a left pressure ring sleeve and a right pressure ring sleeve. The left pressure ring sleeve has a ball bearing retaining sleeve on its right side. The ball bearing retaining sleeve has symmetrically spaced limiting grooves on both its upper and lower sides. Multiple sets of interconnected release holes are located on both sides of the ball bearing retaining sleeve corresponding to the limiting grooves. Each release hole is equipped with a release pin. A connecting threaded ring is located on the right side of the ball bearing retaining sleeve. Connecting washers are symmetrically installed on both sides of the ball bearing retaining sleeve. A retaining ring is located on the inside of the ball bearing retaining sleeve between two sets of connecting washers. Steel balls are evenly distributed on the outer side of the retaining ring. Limiting washers are fixed on both sides of the retaining ring. Rectangular grooves are formed inwards at the top and bottom of each limiting washer. A retaining spring is installed inside each rectangular groove. A ball head seat is fixed to the other end of each retaining spring. A ball head that mates with the limiting groove is rotatably connected inside the ball head seat.

[0008] As a preferred embodiment of this utility model, the left side of the inside of the right pressure ring sleeve is provided with an internal thread that is threaded to the connecting threaded ring, and the left pressure ring sleeve and the right pressure ring sleeve are designed to be detachable.

[0009] As a preferred embodiment of this utility model, the limiting groove is a semi-circular structure with an inward opening, and the internal structure size of the limiting groove is adapted to the external structure size of the ball head.

[0010] As a preferred embodiment of this utility model, the connection between the release hole and the release pin is a plug-in connection.

[0011] As a preferred embodiment of this utility model, the connecting gasket is made of rubber.

[0012] As a preferred embodiment of this utility model, the ball retaining sleeve is designed to be separable from the connecting gasket and the retaining ring.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In this invention, a high-efficiency irregular-shaped toothed internal thread copper tube spinning ring is used to limit the spacing of the steel balls. The locking of the limiting gasket and the ball fixing sleeve limits and fixes the steel balls, ensuring the stable position and range of motion of the steel balls during the spinning process. This ensures that the contact between the steel balls and the copper tube is always maintained at an appropriate position to apply uniform pressure to the copper tube, thereby ensuring the consistency of the copper tube deformation during the pressure application process and improving the processing accuracy of the product. Attached Figure Description

[0015] Figure 1 This is a front view of the overall structure of this utility model;

[0016] Figure 2 This is a structural diagram of the overall structure of this utility model in its separated state;

[0017] Figure 3 This is an enlarged schematic diagram of structure A of this utility model.

[0018] In the diagram: 1. Left pressure ring sleeve; 2. Right pressure ring sleeve; 3. Ball retaining sleeve; 301. Limiting groove; 302. Release hole; 303. Release pin; 4. Connecting threaded ring; 5. Connecting washer; 6. Retaining ring; 601. Steel ball; 602. Limiting washer; 603. Rectangular groove; 604. Abutment spring; 605. Ball head seat; 606. Ball head. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, and several embodiments of the utility model will be provided. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and complete.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] For examples, please refer to Figure 1-3 This utility model provides a technical solution:

[0024] A high-efficiency irregular-shaped internal thread copper tube spin-formed ring includes a left pressure ring sleeve 1 and a right pressure ring sleeve 2. The left pressure ring sleeve 1 has a ball bearing retaining sleeve 3 on its right side. The ball bearing retaining sleeve 3 has symmetrically spaced limiting grooves 301 on both its upper and lower sides. Multiple sets of interconnected release holes 302 are located on the upper and lower sides of the ball bearing retaining sleeve 3, corresponding to the limiting grooves 301. Release pins 303 are installed inside the release holes 302. A connecting threaded ring 4 is provided on the right side of the ball bearing retaining sleeve 3. Connecting washers 5 are symmetrically installed inside the ball bearing retaining sleeve 3. A retaining ring 6 is located inside the ball bearing retaining sleeve 3, between two sets of connecting washers 5.

[0025] The right pressure ring sleeve 2 has an internal thread on the left side that connects to the connecting threaded ring 4. The left pressure ring sleeve 1 and the right pressure ring sleeve 2 are designed to be detachable. The release hole 302 and the release pin 303 are connected by a plug-in connection. The connecting gasket 5 is made of rubber. The ball retaining sleeve 3 is designed to be detachable from the connecting gasket 5 and the retaining ring 6.

[0026] In this embodiment, please refer to Figure 2 and Figure 3 Steel balls 601 are evenly distributed on the outer side of the retaining ring 6. Limiting pads 602 are fixed on both the left and right sides of the retaining ring 6. Rectangular grooves 603 are opened inward at the top and bottom of the limiting pads 602. Abutting spring 604 is installed inside the rectangular groove 603. A ball head seat 605 is fixed at the other end of the abutting spring 604. A ball head 606 that mates with the limiting groove 301 is rotatably connected inside the ball head seat 605.

[0027] The limiting groove 301 is a semi-circular structure with an inward opening, and the internal structure size of the limiting groove 301 is adapted to the external structure size of the ball head 606.

[0028] The working process of this utility model is as follows: The retaining ring 6 is pushed into the ball retaining sleeve 3. During the pushing process, the ball head 606 rotates inside the ball head seat 605 and is squeezed and hidden inside the rectangular groove 603. When it reaches the limiting groove 301, the ball head 606 is locked inside the limiting groove 301 by the action of the abutment spring 604. The retaining ring 6 and the two sets of connecting shims 5 on the left and right can limit the spacing of the steel balls 601. The locking of the limiting shim 602 with the ball retaining sleeve 3 realizes the limiting and fixing of the steel balls 601, ensuring the stable position and range of motion of the steel balls 601 during the spinning process. It ensures that the contact between the steel ball and the copper tube is always kept in an appropriate position to apply uniform pressure to the copper tube, thereby ensuring the consistency of the deformation of the copper tube during the pressure process and improving the processing accuracy of the product. When it is necessary to remove the retaining ring 6, the release pin 303 is inserted into the release hole 302 to squeeze the ball head 606. The operation is convenient.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency profile tooth internal thread copper pipe spinning forming ring, comprising a left pressure ring sleeve (1) and a right pressure ring sleeve (2), characterized in that: The right side of the left compression ring cover (1) is provided with a ball fixing sleeve (3), the upper and lower sides of the ball fixing sleeve (3) are symmetrically provided with limiting grooves (301), a plurality of release holes (302) are arranged on the upper and lower sides of the ball fixing sleeve (3) and correspond to the positions of the limiting grooves (301), the release holes (302) are provided with release pins (303) inside, the right side of the ball fixing sleeve (3) is provided with a connecting threaded ring (4), the ball fixing sleeve (3) is symmetrically provided with a plurality of connecting pads (5) inside, the ball fixing sleeve (3) is provided with a retaining ring (6) between the two connecting pads (5), the outer side of the retaining ring (6) is uniformly provided with steel balls (601), the left and right sides of the retaining ring (6) are fixedly provided with limiting pads (602), the top and bottom of the limiting pad (602) are inwardly provided with rectangular grooves (603), the rectangular grooves (603) are provided with abutting springs (604) inside, the other end of the abutting spring (604) is fixedly provided with a ball head seat (605), the ball head seat (605) is rotatably connected with a ball head (606) matched with the limiting groove (301).

2. A high efficiency profile tooth inner thread copper tube spinning forming ring according to claim 1, characterized in that: The left side of the right compression ring cover (2) is provided with an internal thread matched with the connecting threaded ring (4), the left compression ring cover (1) and the right compression ring cover (2) are designed as a detachable structure.

3. The high efficiency profile tooth inner thread copper tube spinning forming ring according to claim 1, characterized in that: The limiting groove (301) is designed as a semi-arc structure with an opening inward, the internal structure of the limiting groove (301) is matched with the external structure of the ball head (606).

4. The high efficiency profile tooth inner thread copper tube spinning forming ring according to claim 1, characterized in that: The connecting mode between the release hole (302) and the release pin (303) is plug connection.

5. The high efficiency profile tooth inner thread copper tube spinning forming ring according to claim 1, characterized in that: The connecting pad (5) is made of rubber material.

6. The high efficiency profile tooth inner thread copper tube spinning forming ring according to claim 1, characterized in that: The ball fixing sleeve (3) is designed as a separable structure between the connecting pad (5) and the retaining ring (6).

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