CN216398742U

CN216398742U - Pipe fitting hole centre gripping extension mechanism

Info

Publication number: CN216398742U
Application number: CN202122237853.5U
Authority: CN
Inventors: 赵晓懿
Original assignee: Ocean Fluid Technology Shanghai Co ltd
Current assignee: Ocean Fluid Technology Shanghai Co ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-04-29
Anticipated expiration: 2031-09-16

Abstract

The utility model discloses a pipe fitting inner hole clamping and lengthening mechanism which comprises a pull rod, a lengthening rod and a connecting rod, wherein a movable cavity is arranged in the lengthening rod, a presser foot is movably arranged at the upper part of the movable cavity through a pin shaft, the inner part of the lengthening rod is communicated from left to right, and threads are arranged on the inner walls of two ends of the lengthening rod; a first screw rod and a second screw rod are fixedly connected with two ends of the pull rod respectively, a small pull head is connected with the first screw rod in a threaded mode, a large pull head is connected with the second screw rod in a threaded mode, the pull rod is arranged in the extension rod in a sliding connection mode, and the large pull head is arranged in the movable cavity; the right end of the extension bar is connected with a tensioning head, and the pull bar is in threaded connection with a small pull head after penetrating through an inner cavity of the tensioning head; the connecting rod is connected to the left end of the extension rod, and an elastic part is arranged between the connecting rod and the large pull head; the small puller and the big puller are both in a trapezoidal structure. Compared with the prior art, the utility model has the advantages that: environmental protection and energy saving, and can be reused.

Description

Pipe fitting hole centre gripping extension mechanism

Technical Field

The utility model relates to the field of pipe fitting clamping, in particular to a pipe fitting inner hole clamping lengthening mechanism.

Background

The clamping of aiming at the pipe fitting adopts the three-jaw mechanism to clamp the outer diameter of the pipe fitting at present, and in the pipe fitting machining process of some large-radius short straight line sections when the three-jaw mechanism is adopted to clamp the pipe fitting, the mould is large in size and interferes with the three jaws, so that the machining requirement can not be directly met. Aiming at the processing of the pipe fitting with the large radius and the short straight line segment, the length of the lengthened pipe fitting is increased, the interference between the three claws and the die is avoided, the lengthened pipe fitting is cut after the processing is finished, and because burrs and aluminum chips are generated at the pipe end after the cutting, the deburring and the cleaning of the pipe fitting are increased, so the material cost and the labor cost are increased.

Therefore, there is a need to develop an environment-friendly and energy-saving pipe inner hole clamping and lengthening mechanism capable of being reused to solve the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems and provide an environment-friendly and energy-saving pipe fitting inner hole clamping and lengthening mechanism capable of being repeatedly used.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: a pipe fitting inner hole clamping lengthening mechanism comprises a pull rod, a lengthening rod and a connecting rod, wherein a movable cavity is arranged inside the lengthening rod, a presser foot is movably arranged at the upper part of the movable cavity through a pin shaft, the lengthening rod is communicated from left to right, and threads are arranged on the inner walls of two ends of the lengthening rod; a first screw rod and a second screw rod are fixedly connected with two ends of the pull rod respectively, a small pull head is connected with the first screw rod in a threaded mode, a large pull head is connected with the second screw rod in a threaded mode, the pull rod is arranged in the extension rod in a sliding connection mode, and the large pull head is arranged in the movable cavity; the right end of the extension bar is connected with a tensioning head, and the pull bar is in threaded connection with a small pull head after penetrating through an inner cavity of the tensioning head; the connecting rod is connected to the left end of the extension rod, and an elastic part is arranged between the connecting rod and the large pull head; the small puller and the big puller are both in a trapezoidal structure.

Furthermore, the tensioning head comprises a fixed end and a tensioning end, the fixed end is in threaded connection with the inner wall of the right end of the extension bar, and the tensioning end is arranged on the outer side of the extension bar.

Furthermore, a pressure head which is bent downwards is arranged at the end part of the pressure foot, and the inclined surface of the large pull head is matched with the pressure head.

Further, the narrow end of the small puller is in contact with the tensioning end, and the wide end of the large puller is in contact with the elastic component.

Furthermore, the connecting rod is fixedly arranged on the inner wall of the left end of the extension rod through the threads at the end part.

Compared with the prior art, the utility model has the advantages that: the method responds to the call of energy conservation and emission reduction, protects the environment, reduces material waste and reduces the cost. To the pipe fitting processing of the major radius short straightway, adopt extension bar with the pipe fitting extension and convert the three-jaw centre gripping into the hole centre gripping, avoid the interference of three-jaw and mould, extension bar and hole fixture form an organic whole, can used repeatedly. The pipe fitting machining of the large-radius short straight line segment can be met, and cutting, deburring and cleaning operations are not needed after machining.

Drawings

FIG. 1 is a schematic structural diagram of a pipe fitting inner hole clamping lengthening mechanism.

Fig. 2 is a schematic structural view of an extension rod of the pipe fitting inner hole clamping and extension mechanism.

FIG. 3 is a schematic view of a pull rod structure of a pipe fitting inner hole clamping lengthening mechanism.

FIG. 4 is a schematic view of a tensioning head structure of a pipe clamping and lengthening mechanism of the utility model.

As shown in the figure: 1. a tensioning head; 101. a fixed end; 102. a tensioning end; 2. a small slider; 3. a pull rod; 301. a first screw; 302. a second screw; 4. lengthening a rod; 401. a movable chamber; 5. a pin shaft; 6. a presser foot; 601. a pressure head; 7. a large pull head; 8. an elastic member; 9. a connecting rod.

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings. In which like parts are designated by like reference numerals.

In the description of the present invention, it is to be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.

With reference to the attached figures 1-4, the pipe fitting inner hole clamping lengthening mechanism comprises a pull rod 3, an lengthening rod 4 and a connecting rod 9, wherein a movable cavity 401 is arranged inside the lengthening rod 4, a presser foot 6 is movably arranged at the upper part of the movable cavity 401 through a pin shaft 5, the lengthening rod 4 is communicated from left to right, and threads are arranged on the inner walls of two ends of the lengthening rod 4; a first screw 301 and a second screw 302 are fixedly connected to two ends of the pull rod 3 respectively, a small pull head 2 is connected to the first screw 301 in a threaded manner, a large pull head 7 is connected to the second screw 302 in a threaded manner, and when the pull rod 3 is slidably connected and arranged inside the extension rod 4, the large pull head 7 slides in the movable chamber 401; the right end of the extension bar 4 is connected with a tensioning head 1, the pull rod 3 is in threaded connection with a small pull head 2 after penetrating through the inner cavity of the tensioning head 1, and the tensioning head can be expanded outwards by pressing the presser foot; the connecting rod 9 is connected to the left end of the extension bar 4, and an elastic part 8 is arranged between the connecting rod 9 and the large pull head 7; the small puller 2 and the large puller 7 are both in a trapezoidal structure.

The tensioning head 1 comprises a fixed end 101 and a tensioning end 102, the fixed end 101 is in threaded connection with the inner wall of the right end of the extension bar 4, and the tensioning end 102 is arranged on the outer side of the extension bar 4.

The end of the presser foot 6 is provided with a pressure head 601 which is bent downwards, the inclined surface of the large pull head 7 is matched with the pressure head 601, and when the presser foot 6 is pressed downwards, the pressure head 601 presses downwards on the inclined surface of the large pull head 7 to push the large pull head 7 to move towards the elastic component 8.

The narrow end of the small slider 2 is in contact with the tensioning end 102, when the small slider 2 moves leftwards, the narrow end of the small slider 2 firstly enters the tensioning end 102, the tensioning end 102 gradually expands outwards along with the gradual leftward movement of the small slider 2 to clamp the pipe fitting, and the wide end of the large slider 7 is in contact with the elastic component 8.

The connecting rod 9 is fixedly arranged on the inner wall of the left end of the extension bar 4 through the screw thread of the end part.

The working principle is as follows: sleeving a pipe fitting at a tensioning end 102, pressing down a presser foot 6, wherein one end of the presser foot 6 is rotatably connected with an extension bar 4 through a pin shaft 5, a pressure head 601 is matched with an inclined plane of a large pull head 7, the large pull head 7 moves leftwards to compress an elastic component 8, the small pull head 2 is driven by a pull rod 3 to move together when the large pull head 7 moves, a narrow end enters the tensioning end 102 when the small pull head 3 moves, the tensioning end 102 is expanded outwards to clamp the pipe fitting, the outward expansion size of the tensioning end 102 can be changed through the position adjustment of the small pull head 2 on the pipe fitting so as to change the size of clamping key force, and the damage to the pipe fitting caused by overlarge clamping force is prevented; when the pipe fitting is loosened, the presser foot 6 is firstly loosened, the large pull head 7 is pushed to reset by the acting force of the spring 8, the presser foot 6 is reset, the pull rod 3 and the small pull head 2 are pushed to reset together by the large pull head 7, and the pipe fitting is loosened and clamped due to the fact that the small pull head 2 resets and the tensioning head 1 loses the expansion force, and the pipe fitting is taken. The small puller 2 and the large puller 7 can be replaced as required, and the extension rod 4 can be switched to different lengths as required to meet the processing requirements.

The present invention and the embodiments thereof have been described above, and the description is not restrictive, and the embodiments shown in the detailed description are only a part of the embodiments of the present invention, not all embodiments, and the actual configuration is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A pipe fitting inner hole clamping lengthening mechanism comprises a pull rod (3), an extension rod (4) and a connecting rod (9), and is characterized in that a movable cavity (401) is arranged inside the extension rod (4), a presser foot (6) is movably arranged on the upper portion of the movable cavity (401) through a pin shaft (5), the extension rod (4) is communicated from left to right, and threads are arranged on the inner walls of two ends of the extension rod (4); a first screw rod (301) and a second screw rod (302) are fixedly connected to two ends of the pull rod (3) respectively, a small pull head (2) is connected to the first screw rod (301) in a threaded mode, a large pull head (7) is connected to the second screw rod (302) in a threaded mode, the pull rod (3) is arranged inside the extension rod (4) in a sliding mode, and the large pull head (7) is arranged in the movable cavity (401); the right end of the extension bar (4) is connected with an expansion head (1), and the pull rod (3) is in threaded connection with a small pull head (2) after penetrating through the inner cavity of the expansion head (1); the connecting rod (9) is connected to the left end of the extension bar (4), and an elastic component (8) is arranged between the connecting rod (9) and the large pull head (7); the small pull head (2) and the large pull head (7) are both in a trapezoidal structure.

2. The pipe fitting inner hole clamping and lengthening mechanism is characterized in that the tensioning head (1) comprises a fixed end (101) and a tensioning end (102), the fixed end (101) is in threaded connection with the inner wall of the right end of the lengthening rod (4), and the tensioning end (102) is arranged on the outer side of the lengthening rod (4).

3. The pipe fitting inner hole clamping lengthening mechanism is characterized in that a pressing head (601) which is bent downwards is arranged at the end of the pressing foot (6), and the inclined surface of the large pull head (7) is matched with the pressing head (601).

4. The pipe fitting inner hole clamping lengthening mechanism is characterized in that a narrow end of the small pull head (2) is in contact with a tensioning end (102), and a wide end of the large pull head (7) is in contact with an elastic component (8).

5. The pipe fitting inner hole clamping lengthening mechanism is characterized in that the connecting rod (9) is fixedly arranged on the inner wall of the left end of the lengthening rod (4) through threads at the end part.