CN212705320U

CN212705320U - Screw thread bush dismounting device

Info

Publication number: CN212705320U
Application number: CN202021269438.7U
Authority: CN
Inventors: 杨璠; 黄贤滨; 施庆宁; 苏捷; 李锦强
Original assignee: Guangdong Jieyu Powder Coating Co ltd
Current assignee: Guangdong Jieyu Powder Coating Co ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2021-03-16
Anticipated expiration: 2030-07-01

Abstract

The utility model discloses a device is demolishd to screw rod thread bush. The device comprises a main body (1), wherein an ejection mechanism (3) and a screw clamp (4) which are arranged oppositely are arranged on the main body (1); the ejection mechanism (3) is provided with an ejector rod (5) pointing to the screw clamp (4); the central shaft of the ejector rod (5) is superposed with the central shaft of the screw rod in the screw rod clamp (4) during working. The utility model provides a screw rod thread bush demolishs device utilizes ejection mechanism (3) and screw rod anchor clamps (4) to demolish screw rod thread bush, has solved the deformation of avoiding local heating or manual work to demolish and has brought, problem that workman intensity of labour is big.

Description

Screw thread bush dismounting device

Technical Field

The utility model relates to a device is demolishd to screw rod thread bush.

Background

The screw extruder is a common device for plastic processing, and can fully plasticize and uniformly mix materials by means of pressure and shearing force generated by rotation of a screw, and the materials are molded through a neck mold. Screw extruders can be classified basically into twin-screw extruders, single-screw extruders, and less first multi-screw extruders as well as screwless extruders.

Depending on the product and process, it is often necessary to pull the screw out of the extruder and remove the threaded sleeve, and then clean, recombine or replace the threaded sleeve.

At present, the conventional method for disassembling the threaded element is: 1) a worker uses tools such as a copper bar and the like to knock the threaded element to remove the threaded element from the mandrel; 2) the threaded element is locally heated by a fire gun and then knocked manually to be detached. Due to the unique spiral shape of the threaded element, a worker cannot find an effective stress point when knocking the threaded element, so that the efficiency is low; and the screw edge of the screw element is easy to damage when knocking; the burning method is liable to cause local overheating, which leads to deformation of the threaded element and the mandrel.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the problem that above-mentioned prior art exists, provide a screw rod thread bush demolishs device, use mechanical equipment to replace the manpower to carry out the dismantlement of thread bush.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a screw thread sleeve dismounting device comprises a main body, wherein an ejection mechanism and a screw clamp which are arranged oppositely are arranged on the main body; the ejection mechanism is provided with an ejector rod pointing to the screw rod clamp; and the central shaft of the ejector rod is superposed with the central shaft of the screw rod in the screw rod clamp during working. When the threaded sleeve of the screw is detached, the screw is placed in the screw clamp firstly, the central shaft of the screw is adjusted to be overlapped with and clamped tightly with the central shaft of the ejector rod, the end part of the screw, facing the ejection mechanism, is abutted against the end part of the ejector rod, the ejection mechanism is started to eject the rod body of the screw, and the separation of the rod body and the threaded sleeve is realized.

And a bearing shaft is arranged below the section of the ejector rod close to the screw rod clamp, and the ejector rod is lapped on the bearing shaft. This bearing holds in the palm the ejector pin for the ejector pin is more stable in work, avoids leading to the fact skew because of under its self action of gravity, improves work efficiency.

The screw rod clamp is a hollow chuck, and a central shaft with a through hole in the center of the screw rod clamp is superposed with a central shaft of the ejector rod. The hollow chuck is a manual chuck, a pneumatic chuck, a hydraulic chuck, an electric chuck or a mechanical chuck. The various hollow chucks described above may be three-jaw chucks, four-jaw chucks or six-jaw chucks depending on the number of movable jaws.

The ejection mechanism comprises a jack and an ejector rod connected with the output end of the jack. The jack is an electric jack.

The utility model discloses still include the roller frame, be located the main part sets up the outside of that one side of screw rod anchor clamps, the roller frame level sets up the several roller bearing, the circumference apex of each roller bearing with the minimum that there is the through-hole in the central authorities of cavity chuck is located same horizontal plane. The lower part of the main body is provided with an underframe used for placing an electric pump station of the electric jack and other objects.

Pulleys are arranged at the bottoms of the roller frame and the main body.

The utility model has the advantages of it is following:

1. the utility model provides a device is demolishd to screw rod thread bush sets up ejection mechanism and screw rod anchor clamps, when carrying out the screw rod thread bush and dismantle, places the screw rod earlier in screw rod anchor clamps the center pin of adjusting screw rod and the central axis coincidence of ejector pin press from both sides tightly, and the screw rod offsets towards ejection mechanism's tip and ejector pin tip, starts ejection mechanism ejecting with the body of rod of screw rod, realizes pole and thread bush separation. The problems of deformation and high labor intensity of workers caused by local heating or manual dismantling are solved.

2. The utility model discloses a screw rod anchor clamps adopts the chuck, because the chuck has movable jack catch, can adapt to the screw rod of different diameters.

3. The utility model discloses set up the roller frame, play the bearing effect to the screw rod, avoid taking place the skew to increase the resistance between the body of rod and the thread bush because of body of rod self gravity in the separation process.

Drawings

Fig. 1 is an isometric view of the present invention;

fig. 2 is an isometric view of another perspective of the present invention.

In the figure: a main body 1; a chassis 11; a pulley 12; a support shaft 13; a roller frame 21; a roller 22; an ejection mechanism 3; a support plate 31; a screw clamp 4; a chuck handle 41; and a top rod 5.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, this is for convenience of description and simplicity of description, and does not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the terms describing the positional relationships in the drawings are for illustrative purposes only and should not be construed as limiting the present patent.

In the present invention, unless otherwise specified or limited, it should be noted that terms such as "mounted," "connected," and the like are used in a broad sense, and for example, the terms may be mechanically connected, electrically connected, or pneumatically connected, or may be connected inside two elements, directly connected, or indirectly connected through an intermediate medium, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Fig. 1 and fig. 2 are schematic structural diagrams of the present invention at different viewing angles. As shown in fig. 1 and 2, the present invention has two parts, a main body 1 and an additional roller frame 21. The ejection mechanism 3 and the screw clamp 4 are oppositely arranged on the main body 1. The ejection mechanism 3 is composed of a 30T electric jack and an ejector rod 5, and the ejector rod 5 is fixed at the end part of an output rod of the electric jack. The screw clamp 4 is a hollow chuck, more specifically a manual three-jaw chuck.

The main part 1 is frame construction, and upper portion is the rectangle framework, as the workstation, and the bottom at its four corners sets up four spinal branch daggers, and each spinal branch dagger bottom sets up pulley 12, and a level in rectangle framework below sets up chassis 11, and these chassis 11 four angles weld respectively on four spinal branch daggers. The undercarriage 11 is used for placing objects, such as an electric pumping station (not shown) of an electric jack or other necessary power components or other temporarily placed objects.

The manual three-jaw chuck is fixedly arranged on the inner wall of one side plate which is taken as a wide side of the rectangular frame body, and a through hole which is coaxial with the central through hole and has the same aperture is arranged at the position, corresponding to the central through hole of the manual three-jaw chuck, on the side plate. A pallet 31 is provided on the inner wall of the other side plate as the wide side of the rectangular frame, and a hydraulic cylinder of an electric jack of the ejector mechanism 3 is attached to the pallet 31. The ejector rod 5 of the ejection mechanism 3 points to the manual three-jaw chuck, and the central shaft of the ejector rod 5 is superposed with the central shaft of the central through hole of the manual three-jaw chuck. A bearing shaft 13 is arranged below the mandril 5, the bearing shaft 13 is arranged at a position close to the manual three-jaw chuck and spans the width of the rectangular frame body of the main body 1, and two ends of the bearing shaft are respectively welded and fixed at the bottoms of two side plates as long edges of the rectangular frame body. The rod body of the ejector rod 5 close to one end part of the manual three-jaw chuck is lapped on the bearing shaft 13, and during work, the ejector rod 5 is more stable and does not deviate under the action of self gravity.

The roller frame 21 is located outside the side of the main body 1 where the screw clamp 4 is provided, and is provided along the length direction of the main body 1. The roller frame 21 and the main body 1 may be connected by a non-detachable manner such as welding, or may be connected by a detachable manner such as a screw and a nut. The roller frame 21 is horizontally provided with a plurality of mutually parallel rollers 22, and each roller 22 is parallel to a side plate as a wide side of the rectangular frame of the main body 1. The top point of the circumference of each roller 22 and the lowest point of the center of the manual three-jaw chuck with the through hole are positioned on the same horizontal plane.

Use the utility model discloses a demolish the process and do: firstly, the screw rod penetrates through a central through hole of the hollow chuck, the position of the movable clamping jaw is adjusted through the chuck handle 41 to clamp the screw rod tightly, the central axis of the screw rod is coincided with the central axis of the ejector rod 5, the ejector rod 5 abuts against the end part of the rod body of the screw rod, the electric jack 3 is started, the ejector rod 5 applies force to eject the rod body, and the rod body is separated from the thread sleeve. The chuck handle 41 is then rotated to release the movable jaws and the threaded sleeve is removed. The jack 3 retracts to the initial position, and the process is completed.

Claims

1. The utility model provides a device is demolishd to screw rod thread bush, includes main part (1), its characterized in that: the main body (1) is provided with an ejection mechanism (3) and a screw clamp (4) which are arranged oppositely; the ejection mechanism (3) is provided with an ejector rod (5) pointing to the screw clamp (4); the central shaft of the ejector rod (5) is superposed with the central shaft of the screw rod in the screw rod clamp (4) during working.

2. The screw thread bushing removing device according to claim 1, wherein: the lower part of the section of the ejector rod (5) close to the screw rod clamp is provided with a bearing shaft (13), and the ejector rod (5) is lapped on the bearing shaft.

3. The screw thread bushing removing device according to claim 1, wherein: the screw rod clamp (4) is a hollow chuck, and a central shaft with a through hole in the center of the screw rod clamp is overlapped with a central shaft of the ejector rod (5).

4. The screw thread bushing removal device according to claim 3, wherein: the hollow chuck is a manual chuck, a pneumatic chuck, a hydraulic chuck, an electric chuck or a mechanical chuck.

5. The screw thread bushing removal device according to claim 4, wherein: the hollow chuck is a three-jaw chuck, a four-jaw chuck or a six-jaw chuck.

6. The screw thread bushing removing device according to claim 1, wherein: the ejection mechanism (3) comprises a jack and an ejector rod (5) connected to the output end of the jack.

7. The screw thread bushing removal device according to claim 6, wherein: the jack is an electric jack.

8. A screw thread bushing removal device according to any one of claims 3-5, wherein: the screw clamp is characterized by further comprising a roller frame (21) located on the outer side of the side, provided with the screw clamp (4), of the main body (1), the roller frame (21) is horizontally provided with a plurality of rollers (22), and the circumferential top point of each roller (22) and the lowest point of the center of the hollow chuck, provided with a through hole, are located on the same horizontal plane.

9. The screw thread bushing removal device according to claim 8, wherein: pulleys (12) are arranged at the bottoms of the roller frame (21) and the main body (1).

10. The screw thread bushing removing device according to claim 1, wherein: the lower part of the main body (1) is provided with an underframe (11) for placing an electric pump station of an electric jack.