Auxiliary welding device for saddle-shaped pipe fitting

Abstract

The utility model provides a saddle-shaped pipe fitting welding auxiliary device, and belongs to the technical field of pipe welding. A saddle-shaped pipe fitting welding auxiliary device comprises a machine frame and a pipe carrying support arranged at the top of the machine frame, and is characterized in that a guide piece is connected to the machine frame in a sliding mode in the vertical direction, a positioning sleeve with an inserting groove is connected to the guide piece, a groove opening of the inserting groove of the positioning sleeve faces downwards and is formed above the pipe carrying support, and the pipe carrying support is connected with the guide piece in a sliding mode. The rack is further provided with a driving mechanism capable of enabling the guiding piece to move in the sliding direction and a control motor capable of controlling the driving mechanism. The saddle-shaped pipe fitting is reliably positioned through the positioning sleeve, stable pressure is provided through the control motor and the driving mechanism, the welding time is precisely controlled, the welding strength and the welding precision are guaranteed in combination with the positioning sleeve, and deviation of the saddle-shaped pipe fitting and the pipe or deviation of the control force of the saddle-shaped pipe fitting caused by manual operation is avoided; and the welding convenience and effect are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe welding and relates to a saddle-shaped pipe fitting welding auxiliary device. Background Art

[0002] Saddle fittings are usually used at the junction of two pipes in different planes or directions. For example, when the main pipe needs to be connected to a bypass branch on the side, the saddle fitting needs to be fixed to the side of the main pipe. After the saddle fitting and the pipe are placed in the appropriate position to align their interfaces, the saddle fitting and the pipe are hot-melt welded through the heating die head. At present, PPR and PE saddle fittings are welded manually, and the strength and time cannot be accurately controlled. It is not convenient for welding and the welding strength and accuracy cannot be guaranteed, resulting in poor welding results and even the hidden danger of pipeline leakage, causing unnecessary losses. Utility Model Content

[0003] The purpose of the utility model is to solve the above problems in the existing technology and propose a saddle pipe welding auxiliary device. The technical problem to be solved by the utility model is: how to improve the convenience and welding effect of branch pipe welding.

[0004] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0005] A saddle-shaped pipe welding auxiliary device comprises a frame and a pipe carrying bracket arranged on the top of the frame, characterized in that a guide member is slidably connected to the frame in a vertical direction, a positioning sleeve with an insertion groove is connected to the guide member, and the insertion groove of the positioning sleeve is arranged downward above the pipe carrying bracket. The frame is also provided with a driving mechanism capable of moving the guide member in a sliding direction and a control motor capable of controlling the driving mechanism.

[0006] First, place the pipe horizontally on the pipe carrying bracket, and after opening a hole on the pipe wall through other devices, insert the upper end of the saddle pipe fitting with the butt end facing downward into the plug-in slot to achieve the positioning of the saddle pipe fitting, control the motor to set the pressure value and pressure time required for the positioning sleeve, and then control the motor to control the drive mechanism to drive the guide member downward, thereby driving the positioning sleeve downward and reliably positioning the saddle pipe fitting on the positioning sleeve on the pipe according to the set pressure value, and then heat the pipe and the saddle pipe fitting through the handheld heating die head. The high temperature melts the edge of the saddle pipe fitting and finally welds the saddle pipe fitting to the pipe. When the set welding time is reached, the rear drive mechanism drives the positioning sleeve to move up and separate from the saddle pipe to finally complete the welding work. The saddle pipe fitting is reliably positioned by the positioning sleeve, and the welding strength and welding accuracy are guaranteed by controlling the motor and the drive mechanism to provide stable pressure and precisely controlled welding time, and combined with the positioning sleeve, so as to avoid the deviation of the saddle pipe fitting and the pipe due to manual operation or the deviation of the control force of the saddle pipe fitting, and improve the welding convenience and effect.

[0007] In the above-mentioned saddle pipe welding auxiliary device, the guide piece is in the shape of a rectangular plate, the top of the frame is in the shape of a rectangle, two vertically arranged guide rods are respectively fixed on both sides of the width direction of the top of the frame, and the four guide rods pass through the four corners of the guide piece correspondingly. The arrangement of the four guide rods improves the stability and reliability of the movement of the guide piece and ensures the control accuracy of the driving mechanism on the movement of the positioning sleeve.

[0008] In the above-mentioned saddle pipe welding auxiliary device, a fixing plate is arranged parallel to the top of the guide member, the upper ends of the four guide rods have a columnar fixing portion, the four corners of the fixing plate have fixing holes, the rod diameters of the four guide rods are larger than the diameters of the fixing holes, the four fixing portions pass through the fixing holes correspondingly and are screwed with the fixing portions by nuts to press and fix the fixing plate. The setting of the fixing plate increases the stability of the several guide rods, and the fixing plate is pressed between the guide rods and the nuts by screwing the nuts and the fixing portions, so the structure is simple and reliable, and the installation is convenient.

[0009] In the above-mentioned saddle pipe welding auxiliary device, the driving mechanism is a cylinder, which is arranged vertically, the cylinder body of the cylinder passes through the fixing plate and is fixedly connected to the fixing plate, the piston rod of the cylinder is fixedly connected to the guide member, and the positioning sleeve is detachably connected to the lower end of the guide member. The positioning sleeve is detachably connected to the guide member, which is convenient for selecting the appropriate positioning sleeve size according to the diameter of the saddle pipe, thereby improving versatility. The cylinder as a driving mechanism has high reliability, low cost and is easy to control.

[0010] In the above-mentioned saddle pipe welding auxiliary device, the upper end of the positioning sleeve has a fixing cover, and the fixing cover is fixed to the lower bottom surface of the guide member by bolts. Fixing by bolts improves the convenience of installing the positioning sleeve, has high reliability and low cost.

[0011] In the above-mentioned saddle-shaped pipe welding auxiliary device, the pipe mounting bracket includes a mounting plate with perforations and a U-shaped bearing plate, and the mounting plate and the bearing plate are arranged opposite to each other and close to the two ends of the length direction of the top of the frame. The setting of the mounting plate can limit the circumference of the pipe to a certain extent, so as to avoid the pipe from shaking violently during the welding process and affecting the welding effect. The bearing plate can increase the operating space for subsequent work, so as to facilitate the subsequent cutting, unloading and other operations of the welded pipe.

[0012] In the above-mentioned saddle-shaped pipe welding auxiliary device, a first annular intermediate plate and a U-shaped second intermediate plate are provided between the mounting plate and the load-bearing plate, and two connecting rods are fixed between the mounting plate and the load-bearing plate. The two connecting rods are arranged on the left and right sides of the mounting plate and both pass through the first intermediate plate and the second intermediate plate. The first intermediate plate and the second intermediate plate increase the support force for the pipe, and the first intermediate plate can reduce the shaking of the pipe during welding and increase the stability of the pipe during welding.

[0013] In the above-mentioned saddle pipe welding auxiliary device, the positioning sleeve is located between the mounting plate and the first intermediate plate. When the positioning sleeve moves upward after welding, the mounting plate and the first intermediate plate can restrict the pipe, thereby assisting the saddle pipe to be separated from the positioning sleeve.

[0014] In the above-mentioned saddle pipe welding auxiliary device, a joystick is provided on the control motor, and the stroke and time of the cylinder are controlled by the joystick, and the setting of the joystick can improve the control convenience.

[0015] Compared with the prior art, the advantages of the utility model are: the saddle-shaped pipe fitting is reliably positioned by the positioning sleeve, the driving mechanism provides stable pressure and precisely controlled welding time and combines with the positioning sleeve to ensure welding strength and welding accuracy, avoiding the offset of the saddle-shaped pipe fitting and the pipe or the deviation of the control force of the saddle-shaped pipe fitting due to manual operation, and improving the convenience and effect of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the welding preparation state of the welding auxiliary device.

[0017] Figure 2 It is a schematic diagram of the welding state of the welding auxiliary device.

[0018] Figure 3It is a schematic diagram of the overall structure of the welding auxiliary device.

[0019] Figure 4 This is a partial structural exploded view of the welding auxiliary device.

[0020] In the figure, 1, frame; 2, pipe carrying bracket; 21, carrying plate; 211, perforation; 22, load-bearing plate; 23, first intermediate strap; 24, second intermediate strap; 25, connecting rod; 31, fixing plate; 311, fixing hole; 32, guide rod; 321, fixing part; 33, guide member; 4, positioning sleeve; 41, plug-in slot; 42, fixing cover; 5, driving mechanism; 6, control motor; 61, joystick; 7, nut; 8, pipe; 9, saddle pipe fitting. DETAILED DESCRIPTION

[0021] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to the following embodiments.

[0022] like Figures 1 to 4 As shown, a saddle pipe welding auxiliary device includes a frame 1, a control motor 6 arranged on the frame 1, a pipe 8 carrying bracket 2, a driving mechanism 5 electrically connected to the control motor 6, and a positioning sleeve 4 that can move up and down under the drive of the driving mechanism 5, the positioning sleeve 4 has a positioning groove with a notch facing downward and is located above the pipe 8 carrying bracket 2, the top of the frame 1 is rectangular, the pipe 8 carrying bracket 2 includes a carrying plate 21 with a perforation 211 and a U-shaped bearing plate 22, the carrying plate 21 and the bearing plate 22 are relatively arranged and are respectively close to the two ends of the length direction of the top of the frame 1, a first annular middle plate 23 and a U-shaped second middle plate 24 are arranged between the carrying plate 21 and the bearing plate 22, two connecting rods 25 are fixed between the carrying plate 21 and the bearing plate 22, the two connecting rods 25 are arranged on the left and right sides of the carrying plate 21 and both pass through the first middle plate 23 and the second middle plate 24, and the above-mentioned positioning sleeve 4 is located between the carrying plate 21 and the first middle plate 23.

[0023] A guide member 33 is slidably connected to the frame 1 in the vertical direction. The guide member 33 is in the shape of a rectangular plate. Two vertically arranged guide rods 32 are fixed on both sides of the width direction of the top of the frame 1. The four guide rods 32 pass through the four corners of the guide member 33. A fixing plate 31 is arranged parallel to the top of the guide member 33. The upper ends of the four guide rods 32 have a columnar fixing portion 321. The four corners of the fixing plate 31 have fixing holes 311. The rod diameters of the four guide rods 32 are larger than the fixing holes 311. The four fixing parts 321 pass through the fixing holes 311 and are screwed with the fixing parts 321 through nuts 7 to press and fix the fixing plate 31. The driving mechanism 5 is a cylinder, which is vertically arranged. The cylinder body of the cylinder passes through the fixing plate 31 and is fixedly connected to the fixing plate 31. The piston rod of the cylinder is fixedly connected to the guide member 33. The positioning sleeve 4 is detachably connected to the lower end of the guide member 33. Specifically, the upper end of the positioning sleeve 4 has a fixing cover 42, which is fixed to the lower bottom surface of the guide member 33 by bolts.

[0024] The control motor 6 is provided with a joystick 61 , a pressure panel and a time panel for setting the pressure and the pressurizing time of the driving mechanism 5 .

[0025] In the welding preparation state, the pipe 8 is first placed horizontally on the pipe 8 carrying bracket 2. After a hole is opened on the pipe wall by other devices, an appropriate positioning sleeve 4 is selected according to the size of the saddle pipe 9, and the saddle pipe 9 is inserted into the insertion groove 41 of the positioning sleeve 4 to position the saddle pipe 9 on the positioning sleeve 4.

[0026] During welding, the guide member 33 is driven by the driving mechanism 5 to move downward along the length direction of the guide rod 32, thereby driving the positioning sleeve 4 downward, and the saddle pipe fitting 9 on the positioning sleeve 4 is reliably positioned on the pipe 8 by setting the pressure value and the pressurizing time on the control motor 6, and then the pipe 8 and the saddle pipe fitting 9 are heated by the handheld heating die head, and the high temperature causes the edge of the saddle pipe fitting 9 to melt and finally weld the saddle pipe fitting 9 to the pipe 8. When the set pressurizing time is reached, the driving mechanism 5 drives the guide member 33 to move upward, thereby causing the positioning sleeve 4 to move upward. During the upward movement of the positioning sleeve 4, the carrying plate 21 and the first intermediate plate 23 can limit the circumference of the pipe 8, which plays an auxiliary role when the saddle pipe fitting 9 is separated from the positioning sleeve 4, so that the positioning sleeve 4 is separated from the saddle pipe 8 and finally the welding work is completed. After the welding is completed, the pipe 8 moves horizontally toward the bearing plate 22 to carry out the welding operation of the next section of the pipe 8.

[0027] The novel welding method reliably positions the saddle pipe 9 through the positioning sleeve 4, provides stable pressure and precisely controlled welding time through the driving mechanism 5, and combines the guiding effect of the positioning sleeve 4 by the guide member 33 to ensure welding strength and welding accuracy, avoids the deviation of the saddle pipe 9 and the pipe 8 due to manual positioning or the deviation of the control force of the saddle pipe 9, and improves the welding convenience and effect. The positioning sleeve 4 is detachably connected to the guide plate, which is convenient for selecting the appropriate positioning sleeve 4 size according to the diameter of the saddle pipe, and improves the versatility. The guide plate is connected to the guide rod 32, and the guide rod 32 guides the guide plate and improves the stability when moving.

[0028] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0029] Although this article uses more terms such as frame 1, pipe 8 mounting bracket 2, mounting plate 21, perforation 211, bearing plate 22, first intermediate strap 23, second intermediate strap 24, connecting rod 25, fixing plate 31, fixing hole 311, guide rod 32, fixing part 321, guide member 33, positioning sleeve 4, plug slot 41, fixing cover 42, driving mechanism 5, control motor 6, joystick 61, nut 7, pipe 8, saddle pipe 9, etc., it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the utility model. It is contrary to the spirit of the utility model to interpret them as any additional restrictions.

Claims

1. A saddle pipe welding auxiliary device, comprising a frame (1) and a pipe carrying bracket (2) arranged on the top of the frame (1), characterized in that: A guide member (33) is slidably connected to the frame (1) in a vertical direction, a positioning sleeve (4) having an insertion groove (41) is connected to the guide member (33), and the insertion groove (41) of the positioning sleeve (4) is arranged with a notch facing downward above the pipe carrying bracket (2), and the frame (1) is also provided with a driving mechanism (5) capable of moving the guide member (33) in a sliding direction and a control motor (6) capable of controlling the driving mechanism (5).

2. A saddle pipe welding auxiliary device according to claim 1, characterized in that: The guide member (33) is in the shape of a rectangular plate, the top of the frame (1) is in the shape of a rectangle, two vertically arranged guide rods (32) are respectively fixed on both sides of the width direction of the top of the frame (1), and the four guide rods (32) pass through the four corners of the guide member (33) correspondingly.

3. A saddle pipe welding auxiliary device according to claim 2, characterized in that: A fixing plate (31) is arranged parallel to the upper side of the guide member (33); the upper ends of the four guide rods (32) have columnar fixing portions (321); the four corners of the fixing plate (31) have fixing holes (311); the rod diameters of the four guide rods (32) are larger than the hole diameters of the fixing holes (311); the four fixing portions (321) pass through the fixing holes (311) respectively and are screwed to the fixing portions (321) via nuts (7) to press and fix the fixing plate (31).

4. A saddle pipe welding auxiliary device according to claim 3, characterized in that: The driving mechanism (5) is a cylinder, which is arranged vertically. The cylinder body of the cylinder passes through the fixing plate (31) and is fixedly connected to the fixing plate (31). The piston rod of the cylinder is fixedly connected to the guide member (33). The positioning sleeve (4) is detachably connected to the lower end of the guide member (33).

5. A saddle pipe welding auxiliary device according to claim 4, characterized in that: The upper end of the positioning sleeve (4) is provided with a fixing cover (42), and the fixing cover (42) is fixed to the lower bottom surface of the guide member (33) by means of bolts.

6. A saddle pipe welding auxiliary device according to any one of claims 1 to 5, characterized in that: The pipe mounting bracket (2) comprises a mounting plate (21) having a perforation (211) and a U-shaped bearing plate (22), wherein the mounting plate (21) and the bearing plate (22) are arranged opposite to each other and are respectively close to the two ends of the top of the frame (1) in the length direction.

7. A saddle pipe welding auxiliary device according to claim 6, characterized in that: A first annular intermediate strap (23) and a U-shaped second intermediate strap (24) are provided between the mounting plate (21) and the load-bearing plate (22); two connecting rods (25) are fixed between the mounting plate (21) and the load-bearing plate (22); the two connecting rods (25) are provided on the left and right sides of the mounting plate (21) and both pass through the first intermediate strap (23) and the second intermediate strap (24).

8. A saddle pipe welding auxiliary device according to claim 7, characterized in that: The positioning sleeve (4) is located between the mounting plate (21) and the first middle strap (23).

9. A saddle pipe welding auxiliary device according to claim 4, characterized in that: The control motor (6) is provided with a joystick (61).

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