Pipe joint screwing equipment

Abstract

The utility model provides pipe joint screwing equipment, and belongs to the technical field of pipe joint assembly. The problem that in the prior art, the working efficiency of pipe joint screwing operation is low is solved. The pipe joint screwing equipment comprises a rack, a fixing seat with a fixing groove, a motor capable of ascending and descending relative to the rack and a lifting seat arranged on an output shaft of the motor are arranged on the rack, and the output shaft of the motor can drive the lifting seat to synchronously and circumferentially rotate relative to the fixing seat. And the lifting seat can move up and down relative to the output shaft, is positioned above the fixed seat, and is provided with a positioning groove which is arranged opposite to the fixed groove up and down. The pipe joint screwing device has the advantage that the working efficiency of pipe joint screwing operation can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe joint assembly and relates to a pipe joint tightening device. Background Art

[0002] At present, a pipe joint usually consists of a pipe body, a non-threaded socket and a nut. The pipe body has an external thread, and the nut has a matching internal thread. During assembly, first place the non-threaded socket into the nut, and then put the nut with the non-threaded socket sleeved on one side of the external thread of the pipe body and tighten it by thread engagement, so that the front end of the non-threaded socket fits the flat sealing ring of the pipe body, thereby forming an effective seal. Currently, most of the assembly workstations manually tighten the nut with the non-threaded socket and the pipe body by hand. Especially when the size of the pipe joint is large, it is very difficult for manual operation to tighten, which is time-consuming and laborious, and the assembly efficiency is low. Moreover, the tightening force of different operators and each time of the same operator is different, which easily leads to insufficient pressing force at the sealing part and the risk of water leakage. Summary of the Invention

[0003] The purpose of the utility model is to provide a pipe joint tightening device aiming at the above problems existing in the current technology. The technical problem to be solved by the utility model is how to improve the working efficiency of the pipe joint tightening operation.

[0004] The purpose of the utility model can be achieved by the following technical solutions:

[0005] A pipe joint tightening device includes a frame. It is characterized in that a fixed seat with a fixed groove, a motor that can be lifted relative to the frame, and a lifting seat arranged on the output shaft of the motor are provided on the frame. The output shaft of the motor can drive the lifting seat to rotate circumferentially synchronously relative to the fixed seat, and the lifting seat can move up and down relative to the output shaft. The lifting seat is located above the fixed seat, and a positioning groove is provided on the lifting seat and is arranged opposite to the fixed groove up and down.

[0006] During use, the user only needs to first put the non-threaded socket of the pipe joint into the nut, then pre-connect the nut with the non-threaded socket on the pipe body, and then place the pipe body in the fixed groove of the fixed seat. Because the lifting seat of this pipe joint tightening device can not only move up and down relative to the fixed seat, but also rotate circumferentially relative to the fixed seat, and at the same time when the bottom of the lifting seat is stressed, the lifting seat can move up and down relative to the output shaft of the motor, so as to realize the self-alignment of the positioning groove of the lifting seat and the nut while realizing the automatic tightening of the nut and the pipe body, that is, it can simulate manual operation to make the nut automatically snap into the positioning groove of the lifting seat, and the lifting seat drives the nut to rotate synchronously relative to the fixed seat to realize the automatic tightening of the nut and the pipe body, thereby improving the working efficiency of the pipe joint tightening operation.

[0007] In the above-mentioned pipe joint tightening device, the top of the lifting seat has a telescopic groove, the notch of the telescopic groove has an edge portion, the output shaft of the motor extends into the telescopic groove, and the output shaft of the motor has a protrusion that forms a limit fit with the edge portion, the protrusion is radially convexly arranged along the output shaft, the protrusion has a limit block, the groove wall of the telescopic groove has a limit groove opened in the vertical direction, the limit block can be embedded in the limit groove movably up and down, and a spring is arranged between the output shaft of the motor and the bottom of the telescopic groove. The limit fit of the edge portion and the protrusion can prevent the output shaft of the motor from being disconnected from the lifting seat, and the spring is arranged between the output shaft of the motor and the bottom of the telescopic groove to prevent the lifting seat from shaking up and down after the lifting seat and the output shaft of the motor are connected, and at the same time, when the bottom of the lifting seat is subjected to force, the lifting seat can better move up and down relative to the fixed seat.

[0008] In the above-mentioned pipe joint tightening device, there are multiple limit blocks and limit grooves, and the limit blocks are embedded in the limit grooves one by one. The above structure enables the output shaft of the motor and the lifting seat to form a better circumferential limit and up and down movement guide, so that the lifting seat can not only rotate synchronously with the output shaft of the motor, but also move up and down relative to the output shaft of the motor, so as to realize the self-alignment of the positioning groove of the lifting seat and the nut, and realize the automatic tightening of the nut and the pipe body, thereby improving the working efficiency of the pipe joint tightening operation.

[0009] In the above-mentioned pipe joint tightening device, a sliding seat is provided on the frame, and a slide rail and a screw nut mechanism are respectively provided vertically, the sliding seat is provided on the slide rail through a slider, the motor is fixed on the sliding seat, and the sliding seat is driven by the screw nut mechanism to move up and down along the slide rail. By providing the lifting seat on the output shaft of the motor, the lifting seat can better rotate circumferentially relative to the fixed seat under the drive of the motor, and by providing the screw nut mechanism and the slide rail, the sliding seat can better drive the lifting seat to move vertically, thereby improving the working efficiency of the pipe joint tightening operation.

[0010] In the above-mentioned pipe joint tightening device, the cross sections of the fixing groove and the positioning groove are both hexagonal. By setting the cross sections of the fixing groove and the positioning groove to be hexagonal, the shapes of the fixing groove and the positioning groove are respectively matched with the shapes of the pipe body and the nut of the pipe joint to form a circumferential limit.

[0011] In the above-mentioned pipe joint tightening device, a controller is provided on the frame, and a sensor for sensing the axial position movement of the lifting seat is provided on the fixed seat. The controller is electrically connected to the sensor and the motor respectively, and the controller is used to control the rotation of the motor according to the signal transmission of the sensor. When the position of the lifting seat drops to the lowest point, the nut is embedded in the positioning groove of the lifting seat, and the controller controls the motor to rotate at an accelerated speed to realize the rapid tightening operation of the pipe joint, thereby greatly improving the working efficiency of the pipe joint tightening operation and also improving the intelligence of this pipe joint tightening device.

[0012] Compared with the prior art, the advantages of this pipe joint tightening device are as follows: This pipe joint tightening device can realize the automation of the pipe joint tightening operation, thereby greatly improving the working efficiency of the pipe joint tightening operation. Brief Description of the Drawings

[0013] Figure 1 is a perspective structural view of this pipe joint tightening device.

[0014] Figure 2 is a partial perspective structural view of this pipe joint tightening device.

[0015] Figure 3 is a cross-sectional view of this pipe joint tightening device.

[0016] In the figure, 1, frame; 2, fixed seat; 2a, fixed groove; 3, lifting seat; 3a, positioning groove; 3b, telescopic groove; 3b1, edge part; 3b2, limiting groove; 4, sliding seat; 5, motor; 5a, output shaft; 5a1, protruding part; 5a11, limiting block; 6, slide rail; 7, screw-nut mechanism; 8, slider; 9, spring. Detailed Description of the Embodiment

[0017] The following are specific embodiments of the present invention and in combination with the drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0018] Embodiment 1

[0019] A pipe joint tightening device, referring to Figures 1-3 , includes a frame 1, a fixed seat 2 with a fixed groove 2a is provided on the frame 1, a motor 5 that can be lifted relative to the frame 1, and a lifting seat 3 provided on the output shaft 5a of the motor 5. The output shaft 5a of the motor 5 can drive the lifting seat 3 to rotate synchronously in the circumferential direction relative to the fixed seat 2, and the lifting seat 3 can move up and down relative to the output shaft 5a. The lifting seat 3 is located above the fixed seat 2, and a positioning groove 3a that is vertically opposite to the fixed groove 2a is provided on the lifting seat 3; the cross-sections of both the fixed groove 2a and the positioning groove 3a are hexagonal.

[0020] Specifically, referring to Figures 1-3 , a sliding seat 4 is provided on the frame 1, and a slide rail 6 and a lead screw nut mechanism 7 are respectively arranged vertically. The sliding seat 4 is arranged on the slide rail 6 through a slider 8. The motor 5 is fixedly arranged on the sliding seat 4, and the sliding seat 4 is driven by the lead screw nut mechanism 7 to move up and down along the slide rail 6. More specifically, referring to Figures 1-3 , the top of the lifting seat 3 has a telescopic groove 3b, and the notch of the telescopic groove 3b has an edge portion 3b1. The output shaft 5a of the motor 5 extends into the telescopic groove 3b, and a convex portion 5a1 that forms a limit fit with the edge portion 3b1 is provided on the output shaft 5a of the motor 5. The convex portion 5a1 protrudes radially along the output shaft 5a. A limit block 5a11 is provided on the convex portion 5a1. A limit groove 3b2 is vertically opened on the groove wall of the telescopic groove 3b. The limit block 5a11 is movably embedded in the limit groove 3b2 up and down, and a spring 9 is arranged between the output shaft 5a of the motor 5 and the bottom of the telescopic groove 3b.

[0021] In this embodiment, it is preferred that both the limit block 5a11 and the limit groove 3b2 have a plurality of them, and the limit block 5a11 is respectively embedded in the limit groove 3b2; preferably, one end of the spring 9 is fixedly connected to the output shaft 5a of the motor 5, and the other end of the spring 9 is fixedly connected to the bottom wall of the telescopic groove 3b.

[0022] The working principle of this pipe joint tightening device is described below:

[0023] During use, the user first places the non-threaded socket of the pipe joint into the nut, then pre-connects the nut with the non-threaded socket to the pipe body, and then places the pipe body in the fixing groove 2a of the fixing seat 2. Since the cross-section of the outer side wall of the pipe body in contact with the groove wall of the fixing groove 2a is hexagonal, and the cross-section of the fixing groove 2a is also hexagonal, the pipe body can form a mutual limit fit with the groove wall of the fixing groove 2a to prevent the pipe body from rotating circumferentially. Then the user starts the lead screw nut mechanism 7 and the motor 5. The lead screw nut mechanism 7 drives the sliding seat 4 to move downward along the slide rail 6. When the lifting seat 3 on the sliding seat 4 contacts the nut, the positioning groove 3a of the lifting seat 3 and the nut can be self-aligned.

[0024] Specifically, when the hexagon on the cross-section of the outer wall of the nut is vertically aligned with the hexagon on the cross-section of the positioning groove 3a, the nut can be smoothly inserted into the positioning groove 3a of the lifting seat 3. When the hexagons on the cross-sections of the outer wall of the nut and the positioning groove 3a are vertically misaligned, the bottom of the lifting seat 3 contacts the top of the nut. At this time, the bottom of the lifting seat 3 is stressed, causing the lifting seat 3 to move up and down relative to the fixed seat 2 (when stressed, the lifting seat 3 compresses the spring 9 and moves upward along the limiting groove 3b2. After the external force is removed, under the action of the elastic force of the spring 9, the lifting seat 3 moves downward along the limiting groove 3b2, and this process alternates to form up and down movement). At the same time, the motor 5 drives the lifting seat 3 to rotate circumferentially relative to the fixed seat 2 until their positions become vertically aligned. Then, under the action of the elastic force of the spring 9, the lifting seat 3 moves downward, enabling the nut to be smoothly inserted into the positioning groove 3a of the lifting seat 3.

[0025] Meanwhile, since the cross-sections of the outer wall of the nut and the positioning groove 3a are both hexagons, they form a mutual limiting and matching relationship to prevent the nut from rotating circumferentially relative to the lifting seat 3. At this time, under the drive of the motor 5, the lifting seat 3 drives the nut to rotate synchronously circumferentially relative to the pipe body until the nut and the pipe body are in place for threaded connection. Then, the screw-nut mechanism 7 drives the sliding seat 4 to move upward and reset along the slide rail 6. The motor 5 and the lifting seat 3 on the sliding seat 4 are reset synchronously, waiting for the next operation of tightening the pipe joint. Finally, the user can remove the assembled pipe joint.

[0026] Embodiment 2

[0027] The structure and principle of this embodiment are basically the same as those of Embodiment 1. The difference lies in that a controller is provided on the frame 1, and a sensor for sensing the axial position movement of the lifting seat 3 is provided on the fixed seat 2. The controller is electrically connected to the sensor and the motor 5 respectively, and the controller is used to control the rotation of the motor 5 according to the signal transmission of the sensor. The sensor can be arranged on the upper end surface of the fixed seat 2. When the sensor senses that the position of the lifting seat has dropped to the lowest point, at this time, the nut just fits into the positioning groove of the lifting seat. Then, the controller receives the signal of the sensor and controls the motor to rotate at an accelerated speed to achieve the rapid tightening operation of the pipe joint, thereby greatly improving the working efficiency of the pipe joint tightening operation and also improving the intelligence of this pipe joint tightening device.

[0028] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A pipe joint tightening device, comprising a frame (1), characterized in that: A frame (1) is provided with a fixed seat (2) having a fixed groove (2a), a motor (5) capable of being raised and lowered relative to the frame (1), and a lifting seat (3) arranged on an output shaft (5a) of the motor (5); the output shaft (5a) of the motor (5) can drive the lifting seat (3) to rotate synchronously in the circumferential direction relative to the fixed seat (2), and the lifting seat (3) can move up and down relative to the output shaft (5a); the lifting seat (3) is located above the fixed seat (2), and the lifting seat (3) has a positioning groove (3a) arranged vertically opposite to the fixed groove (2a).

2. A pipe joint tightening device according to claim 1, characterized in that: The top of the lifting seat (3) is provided with a telescopic slot (3b), the slot opening of the telescopic slot (3b) is provided with an edge portion (3b1), the output shaft (5a) of the motor (5) extends into the telescopic slot (3b), and the output shaft (5a) of the motor (5) is provided with a protrusion (5a1) which forms a limiting fit with the edge portion (3b1), the protrusion (5a1) is provided along the radial direction of the output shaft (5a), the protrusion (5a1) is provided with a limiting block (5a11), the slot wall of the telescopic slot (3b) is provided with a limiting slot (3b2) opened in the vertical direction, the limiting block (5a11) is embedded in the limiting slot (3b2) so as to be movable up and down, and a spring (9) is provided between the output shaft (5a) of the motor (5) and the slot bottom of the telescopic slot (3b).

3. A pipe joint tightening device according to claim 2, characterized in that: There are multiple limit blocks (5a11) and limit grooves (3b2), and the limit blocks (5a11) are embedded one by one in the limit grooves (3b2).

4. A pipe joint tightening device according to claim 1, 2 or 3, characterized in that: The frame (1) is provided with a sliding seat (4) and a sliding rail (6) and a screw nut mechanism (7) respectively arranged vertically; the sliding seat (4) is arranged on the sliding rail (6) via a slider (8); the motor (5) is fixed on the sliding seat (4); and the sliding seat (4) is driven by the screw nut mechanism (7) to move up and down along the sliding rail (6).

5. A pipe joint tightening device according to claim 1, 2 or 3, characterized in that: The cross sections of both the fixing groove (2a) and the positioning groove (3a) are hexagonal.

6. A pipe joint tightening device according to claim 1, 2 or 3, characterized in that: The frame (1) is provided with a controller, the fixed seat (2) is provided with a sensor for sensing the axial position movement of the lifting seat (3), the controller is electrically connected to the sensor and the motor (5) respectively, and the controller is used to control the rotation of the motor (5) according to the signal transmission of the sensor.

Images