Spiral pipe end expanding device

Abstract

The utility model discloses a spiral pipe end diameter expanding device which comprises a diameter expanding bin, a first electric push rod is arranged in the middle of the top of the diameter expanding bin, the output end of the first electric push rod extends into the diameter expanding bin and is provided with an annular mounting groove, and the two sides of the interior of the annular mounting groove are jointly provided with a dismounting assembly. An expanding head extending to the outside of the annular mounting groove is placed in the middle of the interior of the annular mounting groove, and a heating mechanism is arranged at the bottom of the interior of the expanding bin. Through mutual cooperation of an annular mounting groove, a limiting rod, a threaded rod, an arc-shaped fixing rod, a hinge rod and an internal thread sleeve block, an operator can conveniently disassemble and replace an expanding head in the later period, so that the device can conveniently expand ports with different diameters, the practicability and flexibility of the device in use are effectively improved, and the device is suitable for popularization and application. Compared with the traditional expansion device which can only expand a port with a single diameter, the structural design can increase the use multifunctionality of the expanding device.

Description

TECHNICAL FIELD

[0001] The utility model relates to spiral steel pipe technical field, concretely is a spiral pipe pipe end expanding device. BACKGROUND

[0002] Spiral steel pipe is with strip steel coil plate as raw material, it is warm extrusion forming, with automatic double wire double face submerged arc welding process welding and is spiral seam steel pipe, spiral steel pipe sends strip steel into weld pipe unit, through multiple pass roller rolling, strip steel gradually rolls up, forms the open gap circular pipe blank, currently when spiral steel pipe is processed, spiral steel pipe pipe end expanding device is usually used to carry out the expanding processing, therefore needs to design a spiral pipe pipe end expanding device.

[0003] The expanding device inside expanding head most is fixed mode installation to the inside of the device, the structure design is inconvenient for operating personnel to realize the disassembly replacement of the expanding head after period, further to the operating personnel cannot realize the port expanding operation of different diameter, reduced the expanding device application range and flexibility, and the expanding device is fixed in the process to the spiral steel pipe, most is the operating personnel through manual thread screwing mode and is placed, this kind of fixed mode is more complicated, and reduces the expanding efficiency of later period. UTILITY MODEL CONTENTS

[0004] The utility model discloses a spiral pipe pipe end expanding device, and convenient for realizing the replacement operation of the expanding head inside the expanding device, to facilitate realizing the expansion operation of different diameter ports, and also can conveniently improve the spiral steel pipe fixing efficiency, need not operating personnel to realize the thread screwing operation manually, improves the expanding efficiency and convenience of later period.

[0005] To realize the above-mentioned purpose, provide a kind of spiral pipe pipe end expanding device, including: expanding bin, the middle position of the top of expanding bin is equipped with electric push rod one, and the output of electric push rod one extends to the inside of expanding bin and is equipped with annular mounting groove, the both sides in the inside of annular mounting groove are commonly equipped with disassembly component, the middle position in the inside of annular mounting groove is placed with expanding head extending to its outside, the bottom of the inside of expanding bin is equipped with heating mechanism, the middle position of the both sides of the bottom of expanding bin is equipped with clamping component, the middle position of the bottom of the inside of expanding bin is placed with spiral steel pipe extending to its outside, and spiral steel pipe cooperates with heating mechanism and expanding head, the middle position of the top of the back surface one end of heating mechanism is equipped with electric push rod two, the output of electric push rod two is equipped with U-shaped connecting plate, the both sides of U-shaped connecting plate are equipped with push block at one end, convenient for realizing the replacement operation of the expanding head inside the expanding device, to facilitate realizing the expansion operation of different diameter ports, and also can conveniently improve the spiral steel pipe fixing efficiency, need not operating personnel to realize the thread screwing operation manually, improves the expanding efficiency and convenience of later period.

[0006] According to the spiral pipe end expanding device, the dismounting assembly comprises a threaded rod, a limiting rod, an arc-shaped fixing rod, a hinged rod and an internally-threaded sleeve block, the threaded rod is located at the middle position of the front end of the annular mounting groove, the outer thread of the threaded rod is sleeved with the internally-threaded sleeve block matched therewith, the limiting rods are provided in two groups, the two groups of limiting rods are located at the middle positions of the two sides of the annular mounting groove, and the two groups of limiting rods extend to the inside of the annular mounting groove, the side close to each other of the two groups of limiting rods is provided with the arc-shaped fixing rod matched with the expanding head, the side away from each other of the front end of the two groups of limiting rods is hingedly provided with the internally-threaded sleeve block, and the front end of the two groups of hinged rods is hingedly connected with the two sides of the internally-threaded sleeve block, so as to facilitate the dismounting and replacing operation of the expanding head.

[0007] According to the spiral pipe end expanding device, the clamping assembly comprises a mounting sleeve block, an arc-shaped clamping plate, a spring and a push rod, the mounting sleeve blocks are provided in two groups, the two groups of mounting sleeve blocks are located at the middle positions of the two sides of the bottom of the expanding bin, the inner bottom of the two groups of mounting sleeve blocks is penetrated with the push rod matched with the push block, the side close to each other of the two groups of push rods is provided with the arc-shaped clamping plate matched with the spiral steel pipe, and the side close to each other of the outer part of the two groups of push rods is sleeved with the spring connected with the arc-shaped clamping plate and the mounting sleeve block, so as to facilitate the fixed clamping work of the spiral steel pipe.

[0008] According to the spiral pipe end expanding device, the top of the side away from each other of the two groups of push rods is provided with a guide inclined surface close to the bottom of the two groups of push blocks, and the two groups of guide inclined surfaces are matched, so that the push block can move close to the push rod through the guide inclined surface when the push block moves downward.

[0009] According to the spiral pipe end expanding device, the middle positions of the two sides of the bottom of the expanding bin are provided with guide sliding grooves, and the inside of the two groups of guide sliding grooves is slidably provided with the guide sliding block connected with the push block, so as to facilitate the limiting and moving work of the push block.

[0010] According to the spiral pipe end expanding device, the middle position of the inner bottom of the expanding bin is provided with a feeding opening matched with the spiral steel pipe, so as to facilitate the extending and expanding operation of the spiral steel pipe.

[0011] According to the spiral pipe end expanding device, the two sides of the internally-threaded sleeve block and the side away from each other of the front end of the two groups of limiting rods are provided with hinged seats matched with the hinged rods, so as to facilitate the installation and hinging work of the hinged rods.

[0012] According to the spiral pipe end expanding device, the middle positions of the two sides of the inside of the annular mounting groove are provided with through holes matched with the limiting rods, so as to facilitate the installation and moving work of the limiting rods.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: through the mutual cooperation of the annular mounting groove, the limiting rod, the threaded rod, the arc-shaped fixing rod, the hinged rod and the internal threaded sleeve, the operator can easily disassemble and replace the diameter expanding head in the later stage, so as to facilitate the device to expand ports of different diameters, effectively improving the practicality and flexibility of the device. Compared with the traditional device that can only expand ports of a single diameter, the structural design can increase the versatility of the diameter expanding device.

[0014] At the same time, through the mutual cooperation of the push block, push rod, spring, arc-shaped clamping plate, installation sleeve, electric push rod 2 and U-shaped connecting plate, the later fixed clamping operation of the spiral steel pipe can be realized. Through the structural design of this component, only the electric push rod 2 needs to be pushed in the later stage to complete the fixed clamping of the spiral steel pipe, and there is no need for manual thread twisting work, which improves the stability and convenience of the fixed installation of the spiral steel pipe, thereby improving the working efficiency of the expansion device.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a three-dimensional back view of the expansion chamber of a spiral pipe end expansion device of the present invention;

[0018] Figure 2 This is a front view of the three-dimensional structure of the expansion chamber of a spiral pipe end expansion device of the present invention;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the arc-shaped clamping plate of the spiral pipe end expansion device of the utility model;

[0020] Figure 4 This is a front sectional view of a spiral tube end diameter expanding device according to the present invention;

[0021] Figure 5 This is a bottom sectional view of an annular mounting groove of a spiral pipe end diameter expanding device according to the present invention.

[0022] In the figure: 1. Expansion chamber; 2. Annular mounting groove; 3. Electric push rod 1; 4. Expansion head; 5. Mounting sleeve; 6. Arc-shaped clamping plate; 7. Spiral steel pipe; 8. Spring; 9. Push rod; 10. Push block; 11. Heating mechanism; 12. Threaded rod; 13. Limit rod; 14. Arc-shaped fixing rod; 15. Articulated rod; 16. Internally threaded sleeve; 17. Electric push rod 2; 18. U-shaped connecting plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative work belong to the scope of protection of the utility model.

[0024] Please refer to Figures 1-5 The utility model embodiment provides a kind of technical scheme: a spiral pipe end diameter expanding device, it include: diameter expanding bin 1, diameter expanding bin 1 top middle position is equipped with electric push rod one 3, and electric push rod one 3 output end extends to the inside of diameter expanding bin 1 and is equipped with annular mounting groove 2, the two sides of annular mounting groove 2 inside are commonly equipped with dismounting assembly, the middle position of annular mounting groove 2 inside is placed with diameter expanding head 4 extending to its outside, the bottom of diameter expanding bin 1 inside is equipped with heating mechanism 11, the middle position of diameter expanding bin 1 bottom two sides is equipped with clamping assembly, the middle position of diameter expanding bin 1 inner bottom is placed with spiral steel pipe 7 extending to its outside, and spiral steel pipe 7 is cooperated with heating mechanism 11 and diameter expanding head 4, the middle position of heating mechanism 11 back one end top is equipped with electric push rod two 17, the output end of electric push rod two 17 is equipped with U-shaped connecting plate 18, the one end of U-shaped connecting plate 18 two sides is equipped with push block 10.

[0025] Dismounting assembly includes threaded rod 12, limit rod 13, arc fixed rod 14, articulated rod 15 and internal thread sleeve block 16, threaded rod 12 is located at the middle position of the front end of annular mounting groove 2, the outside of threaded rod 12 is equipped with internal thread sleeve block 16 matched with it, limit rod 13 is equipped with two groups, two groups of limit rod 13 are located at the middle position of the two sides of annular mounting groove 2, and two groups of limit rod 13 extend to the inside of annular mounting groove 2, the side of two groups of limit rod 13 close to each other is equipped with arc fixed rod 14 matched with diameter expanding head 4, the side of two groups of limit rod 13 front end away from each other is hingedly equipped with internal thread sleeve block 16, the front end of two groups of articulated rod 15 is hingedly connected with the two sides of internal thread sleeve block 16.

[0026] Clamping assembly includes mounting sleeve block 5, arc clamping plate 6, spring 8 and push rod 9, mounting sleeve block 5 is equipped with two groups, two groups of mounting sleeve block 5 are located at the middle position of diameter expanding bin 1 bottom two sides, the inner bottom of two groups of mounting sleeve block 5 is all equipped with push rod 9, and push rod 9 is matched with push block 10, the side of two groups of push rod 9 close to each other is equipped with arc clamping plate 6 matched with spiral steel pipe 7, the side of two groups of push rod 9 outside close to each other is all equipped with spring 8 connected with arc clamping plate 6 and mounting sleeve block 5.

[0027] The tops of the two sets of push rods 9 on the sides away from each other and the bottoms of the two sets of push blocks 10 on the sides close to each other are both provided with guiding inclined surfaces, and the two sets of guiding inclined surfaces match each other.

[0028] Guide chutes are provided at the middle positions of the bottoms of both sides of the diameter-expanding bin 1 , and guide sliding blocks connected to the push blocks 10 are slidably provided inside the two sets of guide chutes.

[0029] A feed opening is provided at the middle position of the bottom of the diameter-expanding bin 1 , and the feed opening is matched with the spiral steel pipe 7 .

[0030] Both sides of the internal threaded sleeve 16 and the side away from the front ends of the two sets of limiting rods 13 are provided with hinge seats, and the hinge seats are matched with the hinge rods 15.

[0031] Through holes are provided at the middle positions of both sides of the annular mounting groove 2 , and the through holes cooperate with the limiting rods 13 .

[0032] Working principle: When in use, the device can be moved to the designated location and powered on, and then the spiral steel pipe 7 can be placed on the inner side of the two sets of arc-shaped clamping plates 6, and extended into the interior of the expanded diameter bin 1 through the feed port opened at the bottom of the expanded diameter bin 1, and then the U-shaped connecting plate 18 can be pushed by the electric push rod 2 17 to drive the push block 10 to move down outside the expanded diameter bin 1, and then the guide slope design of the top of the two sets of push blocks 10 close to each other on the side away from the two sets of push rods 9 can make the push block 10 directly push the push rod 9 in the expanded diameter bin 1. The inside of the installation sleeve 5 moves closer, and then the movement of the push rod 9 drives the two sets of arc-shaped clamping plates 6 to move closer to each other to achieve the fixed clamping operation of the spiral steel pipe 7, so as to improve the convenience and flexibility of fixing the spiral steel pipe 7 in the later stage. Finally, the movement of the arc-shaped clamping plate 6 can also achieve the stretching operation of the spring 8. When the electric push rod 2 17 drives the U-shaped connecting plate 18 and the push block 10 to move upward, the elastic restoring force of the spring 8 can drive the arc-shaped clamping plate 6 to recover, and the fixation of the spiral steel pipe 7 can be released;

[0033] Finally, the heating mechanism 11 is used to heat the end of the spiral steel pipe 7, and the electric push rod 13 and the above components can push the diameter expansion head 4 into the interior of the spiral steel pipe 7, thereby achieving the diameter expansion operation at the end of the spiral steel pipe 7;

[0034] When it is necessary to expand the end of the spiral steel pipe 7 to different diameters, the operator can directly rotate the threaded rod 12 to drive the internal threaded sleeve 16 to move, and then realize the hinged rotation of the hinged rod 15. The hinged rod 15 can pull the limit rod 13 to drive the arc-shaped fixing rod 14 to move and expand inside the annular mounting groove 2, and then release the fixation of the expanding head 4 to realize its replacement. Finally, the expanded head 4 after replacement can be fixed and installed by reverse movement of the above steps.

[0035] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A spiral tube end diameter expansion device, comprising: The expansion chamber (1) is characterized in that an electric push rod (3) is provided at the middle position of the top of the expansion chamber (1), and the output end of the electric push rod (3) extends to the interior of the expansion chamber (1) and is provided with an annular mounting groove (2), a disassembly component is provided on both sides of the interior of the annular mounting groove (2), an expansion head (4) extending to the outside of the annular mounting groove (2) is placed at the middle position of the interior of the annular mounting groove (2), a heating mechanism (11) is provided at the bottom of the interior of the expansion chamber (1), and the expansion chamber (1) A clamping assembly is provided at the middle position on both sides of the bottom, a spiral steel pipe (7) extending to the outside is placed at the middle position of the bottom of the expansion chamber (1), and the spiral steel pipe (7) is matched with the heating mechanism (11) and the expansion head (4), and an electric push rod 2 (17) is provided at the middle position of the top of one end of the back of the heating mechanism (11), and a U-shaped connecting plate (18) is provided at the output end of the electric push rod 2 (17), and push blocks (10) are provided at both ends of the U-shaped connecting plate (18).

2. A spiral tube end diameter expanding device according to claim 1, characterized in that: The disassembly assembly comprises a threaded rod (12), a limiting rod (13), an arc-shaped fixing rod (14), a hinge rod (15) and an internal threaded sleeve (16), wherein the threaded rod (12) is located at the middle position of one end of the front face of the annular mounting groove (2), and the external thread sleeve of the threaded rod (12) is provided with an internal threaded sleeve (16) matched therewith, and the limiting rod (13) is provided with two groups, and the two groups of limiting rods (13) are located at the middle positions of both sides of the annular mounting groove (2), and the two groups of limiting rods (13) extend into the interior of the annular mounting groove (2), and the sides of the two groups of limiting rods (13) that are close to each other are provided with an arc-shaped fixing rod (14) that matches the diameter expansion head (4), and the sides of the two groups of limiting rods (13) that are away from the front ends are hingedly provided with an internal threaded sleeve (16), and the front ends of the two groups of hinged rods (15) are hinged to both sides of the internal threaded sleeve (16).

3. The spiral tube end diameter expanding device according to claim 1, characterized in that: The clamping assembly includes a mounting sleeve (5), an arc-shaped clamping plate (6), a spring (8) and a push rod (9). The mounting sleeve (5) is provided with two groups. The two groups of mounting sleeves (5) are located at the middle position on both sides of the bottom of the expansion chamber (1). The inner bottoms of the two groups of mounting sleeves (5) are penetrated by push rods (9), and the push rods (9) are matched with the push blocks (10). The sides of the two groups of push rods (9) that are close to each other are provided with an arc-shaped clamping plate (6) that is matched with the spiral steel pipe (7). The sides of the two groups of push rods (9) that are close to each other are provided with a spring (8) connected to the arc-shaped clamping plate (6) and the mounting sleeve (5).

4. A spiral tube end diameter expanding device according to claim 3, characterized in that: The tops of the two groups of push rods (9) that are far away from each other and the sides of the two groups of push blocks (10) that are close to each other are both provided with guiding inclined surfaces, and the two groups of guiding inclined surfaces are matched with each other.

5. The spiral tube end diameter expanding device according to claim 1, characterized in that: Guide slots are provided at the middle positions of the bottoms of both sides of the diameter-expanding bin (1), and guide sliding blocks connected to the push blocks (10) are slidably provided inside the two sets of guide slots.

6. The spiral tube end diameter expanding device according to claim 1, characterized in that: A feed opening is provided at the middle position of the bottom of the diameter-expanding bin (1), and the feed opening is matched with the spiral steel pipe (7).

7. The spiral tube end diameter expanding device according to claim 2, characterized in that: Both sides of the internal thread sleeve (16) and the side away from the front ends of the two groups of limiting rods (13) are provided with hinge seats, and the hinge seats are matched with the hinge rods (15).

8. The spiral tube end diameter expanding device according to claim 1, characterized in that: Through holes are provided at the middle positions of both sides of the annular mounting groove (2), and the through holes are matched with the limiting rods (13).

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