Spare assembling machine for expansion control

Abstract

The invention relates to the technical field of workpiece assembling equipment, in particular to an expansion control standby assembling machine. The technical problems that when an existing assembling machine is used for assembling expansion joints, the assembling efficiency is low, an expansion pipe and a flange plate are not sufficiently attached, and then the assembling effect is poor are solved. The expansion control standby assembling machine comprises an outer frame, two supporting frames are fixedly connected to the bottom of the inner wall of the outer frame, and arc-shaped rods are rotationally connected to the two sides of the two supporting frames. An electric sliding block is driven by an electric sliding rail to move, the electric sliding block enables a flange plate to make contact with a port of an expansion pipe through a sleeve and a supporting plate, the sleeve moves to enable the flange plate to rotate through the sliding block and a sliding groove of a fixing shaft, and before contact, the sleeve moves to enable an extrusion rod to extrude the port of the expansion pipe inwards; the end opening of the expansion pipe can enter the inner side of the flange plate more easily, then the flange plate can be arranged on the end opening of the expansion pipe in a sleeving mode more quickly and conveniently, and therefore the assembling efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of workpiece assembly equipment, and in particular to an assembly machine for preparing expansion joints. Background Art

[0002] In order to avoid rupture between two pipes due to thermal expansion and contraction, expansion joints are usually used for connection. The expansion joint is mainly composed of an expansion tube and a flange. During the preparation of the expansion joint, the flange and the expansion tube need to be assembled. During assembly, the staff usually put the two flanges on the two ports of the expansion tube by rotating, so that the flanges can be put on the expansion tube more quickly.

[0003] Since the port of the expansion tube is difficult to align with the inner side of the flange, and the current assembly machine is not convenient for squeezing the port of the expansion tube inward when assembling the expansion joint, the flange is easily blocked by the port of the expansion tube and difficult to put on, resulting in low assembly efficiency. After the flange is put on the expansion tube, the expansion tube is not easy to fit the inner side of the flange, which is inconvenient for subsequent welding. The existing assembly machine is not convenient for squeezing and knocking the inner side of the port of the expansion tube, which results in insufficient fit between the expansion tube and the flange, resulting in poor assembly effect. Summary of the invention

[0004] In order to overcome the above shortcomings, the present invention provides an assembly machine for preparing expansion joints, which can squeeze the port of the expansion tube inward to make the assembly more convenient and quick, and can squeeze and knock the inside of the expansion tube to make the expansion tube fully contact with the flange, thereby enhancing the assembly effect.

[0005] An assembly machine for preparing expansion joints comprises an outer frame, two support frames are fixedly connected to the bottom of the inner wall of the outer frame, the two support frames are symmetrically arranged, both sides of the two support frames are rotatably connected with arc rods, the two arc rods on the same support frame are symmetrically arranged, a torsion spring is connected between the arc rod and the support frame, an expansion tube is placed between the two support frames, each arc rod is in contact with the outer side of the expansion tube, an electric slide rail is fixedly connected to the bottom of the outer frame, both sides of the electric slide rail are slidably connected with electric sliders, the two electric sliders are symmetrically arranged, an assembling mechanism is provided on the outer frame, a flange is provided on the assembling mechanism, the assembling mechanism is used to assemble the flange on both sides of the expansion tube, and the assembling mechanism is provided with an extrusion mechanism for extruding the ports on both sides of the expansion tube.

[0006] It is further explained that each arc-shaped rod has an inclined surface at the top.

[0007] Further description, the assembly mechanism includes a moving rod, the two moving rods are respectively fixedly connected to the two electric sliders, both sides of the inner wall of the outer frame are fixedly connected with fixed shafts, the two fixed shafts are symmetrically arranged, two sliding grooves are opened on the two fixed shafts, and sleeves are sleeved on the two fixed shafts, and two sliding blocks are fixedly connected on the sides of the two sleeves away from each other, the two sliding blocks on the same sleeve are a group, and the two sliding blocks in each group are respectively slidably connected to the two sliding grooves on the fixed shaft on the same side, and the two sleeves are respectively rotatably connected to the two moving rods, and the ends of the two sleeves close to each other are fixedly connected with support plates, and three limiting grooves are evenly opened on the two support plates, and the two flanges are respectively sleeved on the two support plates through the flange holes of the flanges.

[0008] Further explanation, the extrusion mechanism includes a bevel gear 1, two bevel gears 1 are fixedly connected to the two sleeves, and the two sleeves are rotatably connected with a rotating rod, the two rotating rods are symmetrically arranged, and the two rotating rods are fixedly connected with a bevel gear 2, the two moving rods are fixedly connected with a support rod, the two support rods are symmetrically arranged, and the two support rods are rotatably connected with a rotating shaft, and the two rotating shafts are fixedly connected with a transmission bevel gear, and the two sides of the transmission bevel gear are respectively meshed with the bevel gear 1 and the bevel gear 2, and the outer ends of the two rotating rods are evenly slidably connected with three sliding rods, and the three sliding rods on the same rotating rod form a group, and the two groups of sliding rods are symmetrically arranged, and the ends of the two groups of sliding rods close to each other are rotatably connected with three extrusion rods, and there are a total of six extrusion rods, and a torsion spring 2 is connected between each extrusion rod and each sliding rod, and a stopper is fixedly connected to each sliding rod, and the stopper is in contact with one side of the extrusion rod.

[0009] It is further explained that the end of the extrusion rod close to the flange is arranged obliquely.

[0010] Further description, it also includes a fitting mechanism, which is arranged on the rotating rod, and is used to fit the contact portion between the expansion tube and the inner wall of the flange, and the fitting mechanism includes an extrusion ring, and the two extrusion rings are respectively fixedly connected to the two rotating rods, and the limiting grooves of the two support plates are slidably connected with pressure rods, and there are six pressure rods, and the three pressure rods on the same support plate form a group, and the sides of the two groups of pressure rods that are away from each other are respectively in contact with the outer sides of the two extrusion rings, and the sides of the two support plates that are close to each other are fixedly connected with fixed blocks, and three tension springs are respectively connected between the two groups of extrusion rings and the two fixed blocks, and there are six tension springs, and each extrusion ring is fixedly connected with an extrusion plate, the curvature of the extrusion plate is consistent with the inner curvature of the expansion tube, and each extrusion plate is provided with a plurality of circular holes.

[0011] Further description, it also includes a knocking mechanism, which is arranged on the support plate, and is used to knock on the contact part between the expansion tube and the inner wall of the flange. The knocking mechanism includes a magnetic ring, and the two magnetic rings are respectively fixedly connected to the side of the two support plates close to each other, and each of the pressure rods is fixedly connected to a limiting rod, and each of the limiting rods is slidably connected to a knocking plate, and the magnetic ring magnetically absorbs the knocking plate, and a tension spring 2 is connected between the knocking plate and the limiting rod.

[0012] It is further explained that a plurality of protrusions are provided on the outer side of each of the knocking plates, and the plurality of protrusions of each of the knocking plates respectively pass through a plurality of circular holes of each of the extrusion plates.

[0013] The beneficial effects of the present invention are as follows: 1. The present invention drives the electric slider to move through the electric slide rail. The movement of the electric slider will move the flange toward the direction close to the expansion tube through the casing and the support plate. The movement of the casing will drive the sliding block along the sliding groove of the fixed axis to rotate when the flange contacts the port of the expansion tube, thereby making it easier for the flange to be put on the expansion tube. Before the flange contacts the expansion tube, the movement of the casing causes the obliquely arranged extrusion rod to move to squeeze the port of the expansion tube inward, making it easier for the port of the expansion tube to enter the inner side of the flange. The rotation of the casing drives the rotation of bevel gear one. The rotation of bevel gear one drives bevel gear two to rotate in the opposite direction through the transmission bevel gear. The reverse rotation of bevel gear two causes the extrusion rod and the flange to rotate in opposite directions, thereby making it faster and more convenient to put the flange on the port of the expansion tube, thereby improving assembly efficiency.

[0014] 2. When the flange is in contact with the expansion tube port, the rotation of the rotating rod drives the extrusion ring to rotate. The rotation of the extrusion ring will squeeze the pressure rod to move back and forth. The reciprocating movement of the pressure rod will drive the extrusion plate to repeatedly squeeze the inside of the expansion tube, thereby gradually fitting the expansion tube to the inside of the flange, making it more convenient for the staff to weld the flange and the expansion tube in the future, thereby making the assembly effect of the flange and the expansion tube better.

[0015] 3. The reciprocating movement of the compression rod will drive the limit rod to move reciprocatingly, and the reciprocating movement of the limit rod will drive the knocking plate to move reciprocatingly through the limit rod. Under the action of the magnetic ring and the tension spring, the protrusion of the knocking plate repeatedly and quickly hits the inner side of the expansion tube, causing multiple small depressions in the part where the expansion tube contacts the inner side of the flange, thereby destroying the toughness of the expansion tube, making it difficult for the expansion tube to rebound after being fitted with the inner side of the flange, thereby making the fitting more complete, thereby enhancing the assembly effect of the expansion tube and the flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention.

[0018] Figure 3 It is a partial three-dimensional structural schematic diagram of the present invention.

[0019] Figure 4 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.

[0020] Figure 5 It is a schematic diagram of a partially disassembled three-dimensional structure of the assembly mechanism of the present invention.

[0021] Figure 6 It is a partial three-dimensional structural schematic diagram of the assembling mechanism and the extrusion mechanism of the present invention.

[0022] Figure 7 It is a partial three-dimensional structural schematic diagram of the extrusion mechanism of the present invention.

[0023] Figure 8 It is a partial three-dimensional structural schematic diagram of the assembling mechanism, the fitting mechanism and the rotating rod of the present invention.

[0024] Fig. 9 It is a partial three-dimensional structural schematic diagram of the rotating rod and the extrusion ring of the present invention.

[0025] Fig.10 It is a partial three-dimensional structural schematic diagram of the laminating mechanism and flange of the present invention.

[0026] Fig.11 It is a partial cross-sectional three-dimensional structural schematic diagram of the extrusion mechanism and the support plate of the present invention.

[0027] Fig.12 It is a partial three-dimensional structural schematic diagram of the knocking mechanism, the fitting mechanism and the support plate of the present invention.

[0028] Fig.13 It is a schematic diagram of a partially disassembled three-dimensional structure of the striking mechanism of the present invention.

[0029] In the above drawings: 1: outer frame, 2: support frame, 3: arc rod, 4: torsion spring 1, 5: expansion tube, 6: electric slide rail, 7: electric slider, 81: moving rod, 82: fixed shaft, 83: sleeve, 84: sliding block, 85: support plate, 9: flange, 101: bevel gear 1, 102: rotating rod, 103: bevel gear 2, 104: support rod, 105: rotating shaft, 106: transmission bevel gear, 107: sliding rod, 108: extrusion rod, 109: torsion spring 2, 110: stopper, 111: extrusion ring, 112: pressure rod, 113: fixed block, 114: tension spring 1, 115: extrusion plate, 121: magnetic ring, 122: limit rod, 123: knocking plate, 124: tension spring 2. DETAILED DESCRIPTION

[0030] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, and bonding in the prior art, which will not be described in detail here.

[0031] Embodiment 1: An assembly machine for preparing an expansion joint, such as Figure 1-Figure 13 As shown, it includes an outer frame 1, and two support frames 2 are welded to the bottom of the inner wall of the outer frame 1, and the two support frames 2 are symmetrically arranged. Both sides of the two support frames 2 are rotatably connected with arc rods 3, and the two arc rods 3 on the same support frame 2 are symmetrically arranged. A torsion spring 4 is connected between the arc rod 3 and the support frame 2, and an expansion tube 5 is placed between the two support frames 2, each of the arc rods 3 is in contact with the outer side of the expansion tube 5, and the arc rod 3 is used to limit the movement of the expansion tube 5, and the bottom of the outer frame 1 is connected to an electric slide rail 6 by bolts, and both sides of the electric slide rail 6 are slidably connected with electric sliders 7, and the two electric sliders 7 are symmetrically arranged, and an assembling mechanism is provided on the outer frame 1, and a flange 9 is provided on the assembling mechanism. The assembling mechanism is used to assemble the flange 9 on both sides of the expansion tube 5, and the assembling mechanism is provided with an extrusion mechanism for extruding the ports on both sides of the expansion tube 5.

[0032] Each of the arc-shaped rods 3 is provided with an inclined surface at the top, and the inclined surface of the arc-shaped rod 3 can better place the expansion tube 5 .

[0033] The assembly mechanism includes a moving rod 81, and the two moving rods 81 are respectively connected to the two electric sliders 7 by bolts. Both sides of the inner wall of the outer frame 1 are connected with fixed shafts 82 by bolts. The two fixed shafts 82 are symmetrically arranged. Two sliding grooves are opened on the two fixed shafts 82, and sleeves 83 are sleeved on the two fixed shafts 82. Two sliding blocks 84 are welded on the sides of the two sleeves 83 away from each other. The two sliding blocks 84 on the same sleeve 83 form a group, and the two sliding blocks 84 of each group are respectively slidably connected to the two sliding grooves on the fixed shaft 82 on the same side. The two sleeves 83 are respectively rotatably connected to the two moving rods 81, and the ends of the two sleeves 83 close to each other are connected with support plates 85 by bolts. The support plates 85 are used to place and assemble the flanges 9. Three limiting grooves are evenly opened on the two support plates 85, and the two flanges 9 are respectively sleeved on the two support plates 85 through the flange holes of the flanges 9.

[0034] The extrusion mechanism includes a bevel gear 101, and the two bevel gears 101 are connected to the two sleeves 83 through flat keys respectively. The two sleeves 83 are rotatably connected with a rotating rod 102 respectively. The two rotating rods 102 are symmetrically arranged. The two rotating rods 102 are connected to the bevel gear 2 103 through flat keys. Support rods 104 are welded to the two moving rods 81. The two support rods 104 are symmetrically arranged. The two support rods 104 are rotatably connected with a rotating shaft 105. The two rotating shafts 105 are connected with a transmission bevel gear 106 through flat keys. The two sides of the transmission bevel gear 106 are respectively meshed with the bevel gear 101 and the bevel gear 2 103. The outer ends of the rotating rods 102 are evenly and slidably connected with three sliding rods 107. The three sliding rods 107 on the same rotating rod 102 form a group. The two groups of sliding rods 107 are symmetrically arranged. The ends of the two groups of sliding rods 107 close to each other are rotatably connected with three extrusion rods 108. There are six extrusion rods 108 in total. The extrusion rods 108 are used to squeeze the expansion tube 5. A torsion spring 109 is connected between each extrusion rod 108 and each sliding rod 107. A stopper 110 is welded on each sliding rod 107. The stopper 110 is in contact with one side of the extrusion rod 108. The stopper 110 is used to resist the extrusion rod 108 when it squeezes the expansion tube 5 and rotates.

[0035] The end of the squeezing rod 108 close to the flange 9 is arranged obliquely, and the obliquely arranged squeezing rod 108 is used to squeeze the port of the expansion tube 5 inward.

[0036] First, the staff rotates the extrusion rod 108, the torsion spring 109 is twisted, and the two flanges 9 are placed on the two support plates 85 through the flange holes of the flanges 9 respectively. Then the staff releases the extrusion rod 108, and the torsion spring 109 resets to drive the extrusion rod 108 to reset. Then the staff squeezes the arc rod 3 through the inclined surface of the arc rod 3 and places it between the two support frames 2. Then the expansion tube 5 causes the arc rod 3 to rotate first, and the torsion spring 1 4 is twisted. When the expansion tube 5 is completely placed between the two support frames 2, the torsion spring 1 4 resets to drive the arc rod 3 to reset. Under the action of the torsion spring 1 4, the arc rod 3 presses the expansion tube 5, thereby limiting the expansion tube 5. Then the staff slides the electric rail 6 is powered on, the electric slide rail 6 drives the two electric sliders 7 to move in the direction of approaching each other. The movement of the electric slider 7 will drive the sleeve 83 and the support plate 85 to move in the direction of approaching the expansion tube 5 through the moving rod 81. The movement of the support plate 85 will drive the flange 9 to move in the direction of approaching the expansion tube 5. The movement of the sleeve 83 will drive the sliding block 84 to move along the sliding groove of the fixed shaft 82 in the direction of approaching the expansion tube 5. When the flange 9 contacts the port of the expansion tube 5, the sliding groove of the fixed shaft 82 squeezes and moves the sliding block 84 to rotate the sleeve 83. The rotation of the sleeve 83 will drive the bevel gear 101, the support plate 85 and the flange 9 to rotate together, so that the flange 9 can rotate while being inserted into the expansion tube 5, so that the flange 9 is easier to be inserted into the expansion tube. 5, before the flange 9 contacts the expansion tube 5, the extrusion rod 108 contacts the port of the expansion tube 5, and then the expansion tube 5 moves a distance toward the direction close to the flange 9 against the extrusion rod 108, and then the extrusion rod 108 continues to move toward the direction close to the expansion tube 5 to squeeze the port of the expansion tube 5, and the obliquely arranged extrusion rod 108 squeezes the port of the expansion tube 5 inward, so that the port of the expansion tube 5 can enter the inner side of the flange 9 more easily, and the rotation of the bevel gear 101 drives the bevel gear 2 103 to rotate in the opposite direction through the transmission bevel gear 106, and the reverse rotation of the bevel gear 2 103 drives the rotating rod 102, the sliding rod 107 and the extrusion rod 108 to rotate in the opposite direction together, thereby causing the extrusion rod 108 and the flange 9 to rotate in opposite directions. Thereby, the flange 9 can be more quickly and conveniently sleeved on the port of the expansion tube 5, thereby improving the assembly efficiency. When the flange 9 is sleeved on the expansion tube 5, the electric slide rail 6 drives the two electric sliders 7 to move and reset in the direction away from each other. The reset of the electric slider 7 will reset the sleeve 83, the support plate 85 and the rotating rod 102 together through the moving rod 81. The sleeve 83 is reset by the sliding block 84 driving the support plate 85 and the rotating rod 102 to rotate in the opposite direction for reset. The reset of the support plate 85 will drive the flange 9 to rotate in the opposite direction and then disengage, so that the flange 9 is always sleeved on the expansion tube 5. After the rotating rod 102 resets to one end distance, it pulls the sliding rod 107 and the extrusion rod 108 to reset together, and the flange 9 will press against the extrusion rod 108 to make the extrusion rod 108 rotate.The torsion spring 2 109 is twisted, and then the extrusion rod 108 is out of contact with the flange 9. The torsion spring 2 109 is reset to drive the extrusion rod 108 to reset. After the assembly is completed, the staff will cut off the power of the electric slide rail 6, and then the staff will take out the assembled expansion tube 5 and flange 9. The expansion tube 5 will squeeze the arc rod 3 to rotate, and the torsion spring 1 4 is twisted. After the expansion tube 5 and flange 9 are completely taken out, the torsion spring 1 4 is reset to drive the arc rod 3 to reset, and then the assembly is completed.

[0037] Embodiment 2: Based on embodiment 1, Figure 8-Figure 12 As shown, it also includes a fitting mechanism, which is arranged on the rotating rod 102, and is used to fit the contact portion between the expansion tube 5 and the inner wall of the flange 9. The fitting mechanism includes an extrusion ring 111, and the two extrusion rings 111 are respectively connected to the two rotating rods 102 by bolts. The limiting grooves of the two support plates 85 are slidably connected with compression rods 112. There are six compression rods 112. The three compression rods 112 on the same support plate 85 are a group. The two groups of compression rods 112 are respectively connected to the two extrusion rings 111 on one side away from each other. The extrusion ring 111 is used to squeeze the pressure rod 112. A fixing block 113 is welded on one side of the two support plates 85 that are close to each other. Three tension springs 114 are connected between the two groups of extrusion rings 111 and the two fixing blocks 113 respectively. There are six tension springs 114. An extrusion plate 115 is connected to each of the extrusion rings 111 by bolts. The curvature of the extrusion plate 115 is consistent with the curvature of the inner side of the expansion tube 5. Each of the extrusion plates 115 is opened with a plurality of circular holes. The extrusion plate 115 is used to squeeze the inner side of the expansion tube 5.

[0038] At first, the tension spring 114 pulls the compression rod 112 so that the compression rod 112 is close to the outer side of the extrusion ring 111. When the flange 9 contacts the end of the expansion tube 5, the rotation of the rotating rod 102 will drive the extrusion ring 111 to rotate. The rotation of the extrusion ring 111 will first drive the extrusion plate 115 to move toward the inner side of the expansion tube 5 by squeezing the compression rod 112. The tension spring 114 is pulled, and then the extrusion ring 111 continues to rotate and no longer squeezes the compression rod 112. The tension spring 114 resets and drives the compression rod 112 and the extrusion plate 115 to reset together. Repeat this process. The rotation of the extrusion ring 111 will squeeze the compression rod 112 to move back and forth. The reciprocating movement of the compression rod 112 will drive the extrusion plate 115 to repeatedly squeeze the inner side of the expansion tube 5, thereby gradually fitting the expansion tube 5 to the inner side of the flange 9, making it more convenient for the staff to weld the flange 9 and the expansion tube 5 later, thereby making the assembly effect of the flange 9 and the expansion tube 5 better.

[0039] Embodiment 3: Based on Embodiment 2, as shown in FIG. Figure 12-13 As shown, it also includes a knocking mechanism, which is arranged on the support plate 85, and is used to knock on the contact part between the expansion tube 5 and the inner wall of the flange 9. The knocking mechanism includes a magnetic ring 121, and the two magnetic rings 121 are respectively connected to the side of the two support plates 85 close to each other by bolts. A limiting rod 122 is welded on each of the pressure rods 112, and a knocking plate 123 is slidably connected to each of the limiting rods 122. The knocking plate 123 is used to knock on the inner side of the expansion tube 5. The magnetic ring 121 magnetically adsorbs the knocking plate 123, and a tension spring 124 is connected between the knocking plate 123 and the limiting rod 122.

[0040] Each of the knocking plates 123 is provided with a plurality of protrusions on the outside, and the plurality of protrusions of each of the knocking plates 123 respectively pass through a plurality of circular holes of each of the extrusion plates 115 . The plurality of protrusions on the knocking plates 123 are used to destroy the toughness of the port of the expansion tube 5 when knocking.

[0041] When the pressure rod 112 moves toward the inner side of the flange 9, it will drive the limit rod 122 to move. Under the action of the magnetic ring 121, the limit rod 122 moves to pull the tension spring 124. The tension spring 124 is gradually pulled, which will gradually increase the tension on the knocking plate 123. Then, the tension of the tension spring 124 exceeds the magnetic force of the magnetic ring 121, so that the magnetic ring 121 is out of contact with the tension spring 124. The tension spring 124 is instantly reset, which will drive the knocking plate 123 to move quickly toward the inner side of the expansion tube 5. Then, the pressure rod 112 is reset, driving the limit rod 122 and the knocking plate 123 to reset together. When 123 is reset, it will contact the magnetic ring 121 again, and the magnetic ring 121 will attract the knocking plate 123 again through magnetic force. Repeating this process, the reciprocating movement of the limit rod 122 will drive the knocking plate 123 to move back and forth through the limit rod 122. Under the action of the magnetic ring 121 and the tension spring 124, the protrusion of the knocking plate 123 repeatedly and quickly hits the inner side of the expansion tube 5, causing multiple small depressions in the contact part of the expansion tube 5 with the inner side of the flange 9, thereby destroying the toughness of the expansion tube 5, and making it difficult for the expansion tube 5 to rebound after being fitted with the inner side of the flange 9, thereby making the fitting more complete, thereby enhancing the assembly effect of the expansion tube 5 and the flange 9.

[0042] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An assembly machine for preparing expansion joints, characterized by: The invention comprises an outer frame (1), wherein two support frames (2) are fixedly connected to the bottom of the inner wall of the outer frame (1), the two support frames (2) are symmetrically arranged, and arc rods (3) are rotatably connected to both sides of the two support frames (2), and the two arc rods (3) on the same support frame (2) are symmetrically arranged, and a torsion spring (4) is connected between the arc rod (3) and the support frame (2), and an expansion tube (5) is placed between the two support frames (2), and each arc rod (3) is in contact with the outer side of the expansion tube (5), and an electric slide rail (6) is fixedly connected to the bottom of the outer frame (1), and electric sliders (7) are slidably connected to both sides of the electric slide rail (6), and the two electric sliders (7) are symmetrically arranged, and an assembly mechanism is provided on the outer frame (1), and a flange (9) is provided on the assembly mechanism, and the assembly mechanism is used to assemble the flange (9) on both sides of the expansion tube (5), and the assembly mechanism is provided with an extrusion mechanism for extruding the ports on both sides of the expansion tube (5).

2. The assembly machine for expansion joint preparation according to claim 1, characterized in that: Each arc-shaped rod (3) is provided with an inclined surface at the top.

3. The assembly machine for expansion joint preparation according to claim 1, characterized in that: The assembly mechanism comprises a moving rod (81), the two moving rods (81) are respectively fixedly connected to the two electric sliders (7), the inner wall of the outer frame (1) is fixedly connected to a fixed shaft (82) on both sides, the two fixed shafts (82) are symmetrically arranged, the two fixed shafts (82) are each provided with two sliding grooves, the two fixed shafts (82) are each sleeved with a sleeve (83), the two sleeves (83) are fixedly connected to two sliding blocks (84) on the sides away from each other, and the two sliding blocks on the same sleeve (83) are fixedly connected to the two sliding blocks (84). The sliding blocks (84) form a group, and the two sliding blocks (84) in each group are respectively slidably connected to the two sliding grooves on the fixed shaft (82) on the same side, and the two sleeves (83) are respectively rotatably connected to the two moving rods (81), and the ends of the two sleeves (83) close to each other are fixedly connected to a support plate (85), and three limiting grooves are evenly opened on the two support plates (85), and the two flanges (9) are respectively sleeved on the two support plates (85) through the flange holes of the flanges (9).

4. An assembly machine for preparing expansion joints according to claim 3, characterized in that: The extrusion mechanism comprises a bevel gear 1 (101), the two bevel gears 1 (101) are respectively fixedly connected to the two sleeves (83), the two sleeves (83) are respectively rotatably connected to a rotating rod (102), the two rotating rods (102) are symmetrically arranged, the two rotating rods (102) are both fixedly connected to a bevel gear 2 (103), the two moving rods (81) are both fixedly connected to a support rod (104), the two support rods (104) are symmetrically arranged, the two support rods (104) are both rotatably connected to a rotating shaft (105), the two rotating shafts (105) are both fixedly connected to a transmission bevel gear (106), and the two sides of the transmission bevel gear (106) are respectively connected to the bevel gears. Wheel 1 (101) is meshed with bevel gear 2 (103), and the outer ends of the two rotating rods (102) are evenly slidably connected with three sliding rods (107), and the three sliding rods (107) on the same rotating rod (102) form a group. The two groups of sliding rods (107) are symmetrically arranged, and the ends of the two groups of sliding rods (107) close to each other are rotatably connected with three extrusion rods (108). There are six extrusion rods (108) in total, and a torsion spring 2 (109) is connected between each extrusion rod (108) and each sliding rod (107), and a stopper (110) is fixedly connected to each sliding rod (107), and the stopper (110) contacts one side of the extrusion rod (108).

5. The assembly machine for expansion joint preparation according to claim 4, characterized in that: One end of the extrusion rod (108) close to the flange (9) is arranged obliquely.

6. The assembly machine for expansion joint preparation according to claim 4, characterized in that: The device also includes a fitting mechanism, which is arranged on the rotating rod (102) and is used to fit the contact portion between the expansion tube (5) and the inner wall of the flange (9). The fitting mechanism includes an extrusion ring (111). The two extrusion rings (111) are respectively fixedly connected to the two rotating rods (102). The limiting grooves of the two support plates (85) are both slidably connected to pressure rods (112). There are six pressure rods (112). Three pressure rods (112) on the same support plate (85) form a group. The two groups of pressure rods (112) The sides that are away from each other are in contact with the outer sides of the two extrusion rings (111), and the sides of the two support plates (85) that are close to each other are fixedly connected to a fixing block (113). Three tension springs (114) are connected between the two groups of extrusion rings (111) and the two fixing blocks (113), and there are six tension springs (114). Each of the extrusion rings (111) is fixedly connected to an extrusion plate (115), and the curvature of the extrusion plate (115) is consistent with the curvature of the inner side of the expansion tube (5). Each of the extrusion plates (115) is provided with a plurality of circular holes.

7. An assembly machine for preparing expansion joints according to claim 6, characterized in that: The invention also comprises a knocking mechanism, which is arranged on the support plate (85) and is used to knock the contact portion between the expansion tube (5) and the inner wall of the flange (9). The knocking mechanism comprises a magnetic ring (121). The two magnetic rings (121) are respectively fixedly connected to the sides of the two support plates (85) close to each other. A limiting rod (122) is fixedly connected to each of the pressure rods (112). A knocking plate (123) is slidably connected to each of the limiting rods (122). The magnetic ring (121) magnetically absorbs the knocking plate (123). A tension spring (124) is connected between the knocking plate (123) and the limiting rod (122).

8. An assembly machine for preparing expansion joints according to claim 7, characterized in that: A plurality of protrusions are provided on the outer side of each of the knocking plates (123), and the plurality of protrusions of each of the knocking plates (123) respectively pass through the plurality of circular holes of each of the extrusion plates (115).

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