Wear-resistant hard alloy thin-walled tube thread forming core head

Abstract

The utility model relates to the technical field of internal thread pipe forming, in particular to a wear-resistant hard alloy thin-walled pipe thread forming core head which comprises a core head body and a mounting seat, one end of the core head body extends into the mounting seat, partition plates are arranged on the upper side and the lower side of an inner cavity of the mounting seat, and the side walls of the partition plates are fixedly connected with the inner wall of the mounting seat. The two partition plates are arranged on the upper side and the lower side of the core head body correspondingly, quick release assemblies are arranged on the upper side and the lower side of an inner cavity of the mounting base, each quick release assembly comprises rotating shafts arranged on the two sides of the inner cavity of the mounting base, rotating cylinders are fixedly connected to the surfaces of the two rotating shafts, and spiral grooves are formed in the surfaces of the two rotating cylinders correspondingly; and driven gears are fixedly connected to the ends, away from each other, of the surfaces of the two rotating shafts, rotating rods penetrate through the upper sides and the lower sides of the two mounting bases correspondingly, driving gears are fixedly connected to the ends, extending into the mounting bases, of the two rotating rods correspondingly, and replacement work of the core head body can be rapidly completed.

Description

Technical Field

[0001] This utility model relates to the field of internal threaded pipe forming technology, specifically to a wear-resistant carbide thin-walled pipe thread forming mandrel. Background Technology

[0002] Internally threaded copper tubes are a type of heat exchange copper tube widely used in air conditioning equipment. In the actual processing and manufacturing process, internally threaded copper tubes require the use of internally threaded mandrels and the use of four-ball or six-ball planetary ball spinning deformation technology. Internally threaded mandrels refer to threaded hard alloy parts; however, existing threaded mandrels are difficult to disassemble and assemble. When the mandrel wears or deforms after long-term use, the replacement of the mandrel is quite troublesome. Utility Model Content

[0003] The purpose of this invention is to provide a wear-resistant carbide thin-walled pipe thread forming mandrel to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A wear-resistant carbide thin-walled pipe thread forming mandrel includes a mandrel body and a mounting base. One end of the mandrel body extends into the interior of the mounting base. Partitions are provided on both the upper and lower sides of the inner cavity of the mounting base. The sidewalls of the partitions are fixedly connected to the inner wall of the mounting base. The two partitions are respectively provided on the upper and lower sides of the mandrel body. Quick-release components are provided on the upper and lower sides of the inner cavity of the mounting base.

[0006] The quick-release assembly includes rotating shafts on both sides of the inner cavity of the mounting base. Rotary cylinders are fixedly connected to the surfaces of the two rotating shafts. Each of the two rotating cylinders has a spiral groove on its surface. Driven gears are fixedly connected to the ends of the two rotating shafts that are far apart from each other. Rotating rods extend through the upper and lower sides of the two mounting bases. Driven gears are fixedly connected to the ends of the two rotating rods that extend into the interior of the mounting base. Guide rods are provided on the right side of each of the two rotating cylinders. The ends of the two guide rods that are close to each other are fixedly connected to the surfaces of two partitions, respectively. The ends of the two guide rods that are far apart from each other are fixedly connected to the inner walls of the upper and lower sides of the mounting base, respectively. Sliding blocks are fixedly connected to the surfaces of the guide rods. Extension rods are fixedly connected to the sides of the two sliding blocks that are close to the rotating cylinders. Locking rods are fixedly connected to the sides of the two sliding blocks that are close to each other.

[0007] As a preferred embodiment of this utility model, the ends of the two rotating shafts that are far apart from each other are rotatably connected to the inner walls of the upper and lower sides of the mounting base, respectively, and the ends of the two rotating shafts that are close to each other are rotatably connected to the surfaces of the two partitions.

[0008] As a preferred embodiment of this utility model, the two driving gears are respectively meshed with the two driven gears, and the ends of the two extension rods away from the sliding block extend into the interior of the two spiral grooves and are slidably connected to the inner wall of the spiral grooves.

[0009] As a preferred embodiment of this utility model, the upper and lower ends of the right side of the core head body are provided with snap-fit ​​grooves, and the ends of the two snap-fit ​​rods away from the sliding block respectively extend through the two partitions into the interior of the two snap-fit ​​grooves.

[0010] As a preferred embodiment of this utility model, the upper and lower ends of the right side of the core head body are provided with snap-fit ​​grooves, and the ends of the two snap-fit ​​rods away from the sliding block respectively extend through the two partitions into the interior of the two snap-fit ​​grooves.

[0011] As a preferred embodiment of this utility model, the inner groove is uniformly provided with a first reinforcing rib and a second reinforcing rib. The cross-section of the first reinforcing rib is circular, and the cross-section of the second reinforcing rib is trapezoidal. The first reinforcing rib and the second reinforcing rib are distributed alternately.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In this utility model, the first and second reinforcing ribs can provide certain support for the core head body, strengthen the core head body, and extend the service life of the core head body.

[0014] 2. In this utility model, the snap-fit ​​rod is snapped into the inside of the snap-fit ​​groove, which makes it easy to disassemble and assemble the core head body and quickly complete the replacement of the core head body. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the mounting base of this utility model;

[0017] Figure 3 This is an enlarged structural diagram of point A in this utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the core body of this utility model.

[0019] In the diagram: 1. Core head body; 2. Mounting base; 3. Partition plate; 4. Quick-release assembly; 401. Rotating shaft; 402. Rotating cylinder; 403. Spiral groove; 404. Driven gear; 405. Rotating rod; 406. Driving gear; 407. Guide rod; 408. Sliding block; 409. Extension rod; 410. Snap-fit ​​rod; 5. Snap-fit ​​groove; 6. Reinforcing assembly; 601. Inner groove; 602. First reinforcing rib; 603. Second reinforcing rib. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] For examples, please refer to Figure 1 , Figure 2 , Figure 3 This utility model provides a technical solution:

[0025] A wear-resistant carbide thin-walled pipe thread forming mandrel includes a mandrel body 1 and a mounting base 2. One end of the mandrel body 1 extends into the interior of the mounting base 2. Partitions 3 are provided on both the upper and lower sides of the inner cavity of the mounting base 2. The sidewalls of the partitions 3 are fixedly connected to the inner wall of the mounting base 2. The two partitions 3 are respectively located on the upper and lower sides of the mandrel body 1. Quick-release components 4 are provided on the upper and lower sides of the inner cavity of the mounting base 2. The quick-release components 4 include rotating shafts 401 located on both sides of the inner cavity of the mounting base 2. Rotary cylinders 402 are fixedly connected to the surfaces of the two rotating shafts 401. Spiral grooves 403 are formed on the surfaces of the two rotating cylinders 402. Driven gears 404 are fixedly connected to the ends of the two rotating shafts 401 that are far apart from each other. Rotating rods 405 extend through the upper and lower sides of both mounting bases 2. A drive gear 406 is fixedly connected to one end of each rotating rod 405 extending into the mounting base 2. Guide rods 407 are provided on the right side of each of the two rotating cylinders 402. The ends of the two guide rods 407 that are close to each other are fixedly connected to the surfaces of the two partitions 3, while the ends of the two guide rods 407 that are far apart from each other are fixedly connected to the inner walls of the upper and lower sides of the mounting base 2. Sliding blocks 408 are fixedly connected to the surfaces of the guide rods 407. Extension rods 409 are fixedly connected to the side of each sliding block 408 closest to the rotating cylinder 402, and locking rods 410 are fixedly connected to the side of each sliding block 408 closest to each other.

[0026] like Figure 3 As shown, the ends of the two rotating shafts 401 that are far apart from each other are rotatably connected to the inner walls of the upper and lower sides of the mounting base 2, and the ends of the two rotating shafts 401 that are close to each other are rotatably connected to the surfaces of the two partitions 3. The two driving gears 406 are meshed with the two driven gears 404, and the ends of the two extension rods 409 that are far away from the sliding block 408 extend into the interior of the two spiral grooves 403 and are slidably connected to the inner walls of the spiral grooves 403. The upper and lower ends of the right side of the core head body 1 are provided with snap-fit ​​grooves 5, and the ends of the two snap-fit ​​rods 410 that are far away from the sliding block 408 extend through the two partitions 3 and into the interior of the two snap-fit ​​grooves 5.

[0027] like Figure 4 As shown, a reinforcing component 6 is provided inside the core head body 1. The reinforcing component 6 includes an inner groove 601 formed inside the core head body 1. The cross-section of the inner groove 601 is circular. A first reinforcing rib 602 and a second reinforcing rib 603 are uniformly arranged inside the inner groove 601. The cross-section of the first reinforcing rib 602 is circular, and the cross-section of the second reinforcing rib 603 is trapezoidal. The first reinforcing rib 602 and the second reinforcing rib 603 are distributed alternately.

[0028] The working process of this utility model is as follows: During use, the drive gear 406 is rotated by the rotating rod 405. The drive gear 406 drives the rotating drum 402 to rotate by the driven gear 404. During the rotation of the rotating drum 402, the extension rod 409 slides inside the spiral groove 403 and moves away from the partition 3. The sliding block 408 slides on the surface of the guide rod 407. The snap-fit ​​rod 410 leaves the inside of the snap-fit ​​groove 5, allowing the core head body 1 to be quickly disassembled and replaced. The first reinforcing rib 602 and the second reinforcing rib 603 can provide certain support for the core head body 1, strengthen the core head body 1, and extend the service life of the core head body 1.

[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. Thread forming core pin for thin-walled cemented carbide tube, comprising a core pin body (1) and a mounting seat (2), characterized in that: One end of the core head body (1) extends to the inside of the mounting seat (2), the upper and lower sides of the inner cavity of the mounting seat (2) are provided with a partition plate (3), the side wall of the partition plate (3) is fixedly connected with the inner wall of the mounting seat (2), the two partition plates (3) are arranged on the upper and lower sides of the core head body (1), and the upper and lower sides of the inner cavity of the mounting seat (2) are provided with a quick release assembly (4). The quick release assembly (4) includes a rotating shaft (401) arranged on the two sides of the inner cavity of the mounting seat (2), the surfaces of the two rotating shafts (401) are fixedly connected with rotating cylinders (402), the surfaces of the two rotating cylinders (402) are provided with spiral grooves (403), the surfaces of the two rotating shafts (401) are fixedly connected with driven gears (404) away from each other, the upper and lower sides of the two mounting seats (2) are penetrated by rotating rods (405), the ends of the two rotating rods (405) extending to the inside of the mounting seat (2) are fixedly connected with driving gears (406), the right sides of the two rotating cylinders (402) are provided with guide rods (407), the ends of the two guide rods (407) approaching each other are fixedly connected with the surfaces of the two partition plates (3) respectively, the ends of the two guide rods (407) away from each other are fixedly connected with the inner walls of the upper and lower sides of the mounting seat (2) respectively, the surfaces of the guide rods (407) are fixedly connected with sliding blocks (408), the sides of the two sliding blocks (408) close to the rotating cylinders (402) are fixedly connected with extension rods (409), and the sides of the two sliding blocks (408) approaching each other are fixedly connected with clamping rods (410).

2. A thin-walled cemented carbide tube threading core according to claim 1, characterized in that: The ends of the two rotating shafts (401) away from each other are rotatably connected with the inner walls of the upper and lower sides of the mounting seat (2) respectively, and the ends of the two rotating shafts (401) approaching each other are rotatably connected with the surfaces of the two partition plates (3) respectively.

3. A thin-walled cemented carbide tube threading core according to claim 1, characterized in that: The two driving gears (406) are meshedly connected with the two driven gears (404) respectively, and the ends of the two extension rods (409) away from the sliding blocks (408) extend into the interiors of the two spiral grooves (403) and are slidably connected with the inner walls of the spiral grooves (403).

4. A thin-walled cemented carbide tube threading core according to claim 1, characterized in that: The upper and lower ends of the right side of the core head body (1) are provided with clamping grooves (5), and the ends of the two clamping rods (410) away from the sliding blocks (408) extend into the interiors of the two clamping grooves (5) through the two partition plates (3) respectively.

5. A thin-walled cemented carbide tube threading core according to claim 1, characterized in that: The inside of the core head body (1) is provided with a reinforcing assembly (6), the reinforcing assembly (6) includes an inner groove (601) arranged in the inside of the core head body (1), and the section surface of the inner groove (601) is circularly arranged.

6. A thin-walled cemented carbide tube threading core according to claim 5, characterized in that: The inside of the inner groove (601) is uniformly provided with a first reinforcing rib (602) and a second reinforcing rib (603), the section surface of the first reinforcing rib (602) is circularly arranged, the section surface of the second reinforcing rib (603) is trapezoidally arranged, and the first reinforcing rib (602) and the second reinforcing rib (603) are distributed in each other.

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