An assembly machine for manufacturing expansion joints

Abstract

The present invention relates to the technical field of workpiece assembly equipment, and particularly relates to an assembly machine for manufacturing expansion joints. The technical problem is that the current assembly machine has low assembly efficiency when assembling expansion joints, and the fit between the expansion pipe and the flange is not sufficient, resulting in poor assembly effect. An assembly machine for manufacturing expansion joints includes an outer frame, and two support frames are fixedly connected to the bottom of the inner wall of the outer frame. Arc-shaped rods are rotatably connected to both sides of the two support frames. In the present invention, the electric slider is driven to move by the electric slide rail. The electric slider makes the flange contact the port of the expansion pipe through the sleeve and the support plate. The movement of the sleeve makes the flange rotate through the sliding block and the chute of the fixed shaft. Before contact, the movement of the sleeve makes the extrusion rod squeeze the port of the expansion pipe inward, making it easier for the port of the expansion pipe to enter the inner side of the flange, and thus making it more rapid and convenient for the flange to be sleeved on the port of the expansion pipe, thereby improving the assembly efficiency.

Description

Technical Field

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

[0002] In order to avoid rupture between two pipes during thermal expansion and contraction, expansion joints are usually used for connection. An expansion joint mainly consists of an expansion pipe and a flange. During the manufacturing process of the expansion joint, the flange and the expansion pipe need to be assembled. When assembling, workers usually sleeved two flanges on two ports of the expansion pipe by rotating, so that the flange can be sleeved on the expansion pipe more quickly.

[0003] Since the port of the expansion pipe is not easy to align with the inner side of the flange, and the current assembly machine is not convenient for squeezing the port of the expansion pipe inward when assembling the expansion joint, the flange is easily blocked by the port of the expansion pipe and difficult to be sleeved, resulting in low assembly efficiency. And after the flange is sleeved on the expansion pipe, the expansion pipe is not easy to fit against the inner side of the flange, which is not convenient for subsequent welding. The existing assembly machine is not convenient for squeezing and knocking the inner side of the port of the expansion pipe, resulting in insufficient fitting between the expansion pipe and the flange, and thus poor assembly effect. Summary of the Invention

[0004] In order to overcome the above disadvantages, the present invention provides an assembly machine for manufacturing expansion joints, which can squeeze the ports of the expansion pipe inward to make the assembly more convenient and fast, and can squeeze and knock the inner side of the expansion pipe to make the expansion pipe and the flange fully contact, thereby enhancing the assembly effect.

[0005] An assembly machine for manufacturing expansion joints includes an outer frame. The bottom of the inner wall of the outer frame is fixedly connected with two support frames. The two support frames are symmetrically arranged. Both sides of the two support frames are rotatably connected with arc-shaped rods. The two arc-shaped rods on the same support frame are symmetrically arranged. A torsion spring I is connected between the arc-shaped rod and the support frame. An expansion pipe is placed between the two support frames. Each arc-shaped rod contacts the outer side of the expansion pipe. The bottom of the outer frame is fixedly connected with an electric slide rail. Both sides of the electric slide rail are slidably connected with electric sliders. The two electric sliders are symmetrically arranged. An assembly mechanism is provided on the outer frame. A flange is provided on the assembly mechanism. The assembly mechanism is used to assemble the flange on both sides of the expansion pipe. An extrusion mechanism for squeezing the ports on both sides of the expansion pipe is provided on the assembly mechanism.

[0006] Further, a slope is provided at the top of each arc-shaped rod.

[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 chutes are opened on each of the two fixed shafts. Sleeves are sleeved on each of the two fixed shafts. On each side where the two sleeves are away from each other, two sliding blocks are fixedly connected. The two sliding blocks on the same sleeve form a group. The two sliding blocks in each group are respectively slidably connected to the two chutes on the same-side fixed shaft. The two sleeves are respectively rotatably connected to the two moving rods. One end where the two sleeves are close to each other is fixedly connected with a support plate. Three limiting grooves are evenly opened on each of the two support plates. The two flange plates are respectively sleeved on the two support plates through the flange holes of the flange plates.

[0008] Further description: The extrusion mechanism includes a first bevel gear. The two first bevel gears are respectively fixedly connected to the two sleeves. Rotating rods are respectively rotatably connected to the two sleeves. The two rotating rods are symmetrically arranged. A second bevel gear is fixedly connected to each of the two rotating rods. Support rods are fixedly connected to the two moving rods. The two support rods are symmetrically arranged. A rotating shaft is rotatably connected to each of the two support rods. A transmission bevel gear is fixedly connected to each of the two rotating shafts. The two sides of the transmission bevel gear are respectively meshed with the first bevel gear and the second bevel gear. Three sliding rods are evenly and slidably connected to the outer ends of the two rotating rods. The three sliding rods on the same rotating rod form a group. The two groups of sliding rods are symmetrically arranged. One end where the two groups of sliding rods are close to each other is rotatably connected with three extrusion rods. There are a total of six extrusion rods. A second torsion spring is connected between each extrusion rod and each sliding rod. A stop block is fixedly connected to each sliding rod. The stop block contacts one side of the extrusion rod.

[0009] Further description: One end of the extrusion rod close to the flange plate is obliquely arranged.

[0010] Further description: It further includes a fitting mechanism. The fitting mechanism is arranged on the rotating rod. The fitting mechanism is used to fit the contact part between the expansion tube and the inner wall of the flange. The fitting mechanism includes a pressing ring. The two pressing rings are respectively fixedly connected to the two rotating rods. Six pressure-receiving rods are slidably connected to the limiting grooves of the two support plates. The three pressure-receiving rods on the same support plate are in a group. The sides of the two groups of pressure-receiving rods away from each other are respectively in contact with the outer sides of the two pressing rings. Fixed blocks are fixedly connected to the sides of the two support plates close to each other. Three first tension springs are connected between the two pressing rings and the two fixed blocks respectively. There are six first tension springs. An extrusion plate is fixedly connected to each pressing ring. The radian of the extrusion plate is the same as the inner radian of the expansion tube. A number of round holes are formed in each extrusion plate.

[0011] Further description: It further includes a knocking mechanism. The knocking mechanism is arranged on the support plate. The knocking mechanism is used to knock the contact part between the expansion tube and the inner wall of the flange. The knocking mechanism includes a magnetic ring. The two magnetic rings are respectively fixedly connected to the sides of the two support plates close to each other. A limiting rod is fixedly connected to each pressure-receiving rod. A knocking plate is slidably connected to each limiting rod. The magnetic ring magnetically adsorbs the knocking plate. A second tension spring is connected between the knocking plate and the limiting rod.

[0012] Further description: A number of protrusions are arranged on the outside of each knocking plate. The a number of protrusions on each knocking plate respectively pass through the a number of round holes in each extrusion plate.

[0013] The beneficial effects of the present invention are as follows: 1. In the present invention, the electric slider is driven to move by the electric slide rail. When the electric slider moves, the flange will move towards the expansion tube through the sleeve and the support plate. When the sleeve moves, it will drive the sliding block along the chute of the fixed shaft to make the flange rotate when it contacts the port of the expansion tube, so that it is easier for the flange to be sleeved on the expansion tube. Before the flange contacts the expansion tube, the movement of the sleeve makes the obliquely arranged extrusion rod move to squeeze the port of the expansion tube inward, so that it is easier for the port of the expansion tube to enter the inner side of the flange. The rotation of the sleeve drives the first bevel gear to rotate. The rotation of the first bevel gear drives the second bevel gear to rotate in the reverse direction through the transmission bevel gear. The reverse rotation of the second bevel gear makes the extrusion rod and the flange rotate in opposite directions, so that the flange can be sleeved on the port of the expansion tube more quickly and conveniently, thereby improving the assembly efficiency.

[0014] 2. When the flange contacts the port of the expansion pipe, the rotating rod rotates to drive the extrusion ring to rotate. The rotation of the extrusion ring will squeeze the pressure rod to move reciprocally. The reciprocal movement of the pressure rod will drive the extrusion plate to repeatedly squeeze the inner side of the expansion pipe, so that the inner side of the expansion pipe and the flange gradually fit together. This makes it more convenient for the staff to weld the flange and the expansion pipe subsequently, thus improving the assembly effect of the flange and the expansion pipe.

[0015] 3. While the pressure rod moves reciprocally, it will drive the limit rod to move reciprocally. The reciprocal movement of the limit rod will drive the knocking plate to move reciprocally through the limit rod. Under the action of the magnetic ring and the second tension spring, the protrusion of the knocking plate repeatedly and quickly impacts the inner side of the expansion pipe, causing multiple small depressions in the part where the expansion pipe contacts the inner side of the flange. This destroys the toughness of the expansion pipe, so that the expansion pipe is not easy to rebound after fitting with the inner side of the flange, making the fitting more sufficient, and thus enhancing the assembly effect of the expansion pipe and the flange. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0021] Figure 6 It is a partial three-dimensional structural schematic diagram of the assembly 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 assembly mechanism, the fitting mechanism and the rotating rod of the present invention.

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

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

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

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

[0028] Figure 13 This is a partial disassembled three-dimensional structural schematic diagram of the knocking mechanism of the present invention.

[0029] In the above drawings: 1: outer frame, 2: support frame, 3: arc rod, 4: torsion spring I, 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 I, 102: rotating rod, 103: bevel gear II, 104: support rod, 105: rotating shaft, 106: transmission bevel gear, 107: sliding rod, 108: extrusion rod, 109: torsion spring II, 110: stop block, 111: extrusion ring, 112: pressed rod, 113: fixed block, 114: tension spring I, 115: extrusion plate, 121: magnetic ring, 122: limiting rod, 123: knocking plate, 124: tension spring II. Detailed implementation mode

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

[0031] Embodiment 1: An assembly machine for preparing expansion joints, as Figures 1 - 13 shown, includes an outer frame 1. Two support frames 2 are welded to the bottom of the inner wall of the outer frame 1. The two support frames 2 are symmetrically arranged. Both sides of the two support frames 2 are rotatably connected with arc rods 3. The two arc rods 3 on the same support frame 2 are symmetrically arranged. A torsion spring I 4 is connected between the arc rod 3 and the support frame 2. An expansion tube 5 is placed between the two support frames 2. Each arc rod 3 contacts the outer side of the expansion tube 5. The arc rod 3 is used to limit the movement of the expansion tube 5. The bottom of the outer frame 1 is bolted with an electric slide rail 6. Both sides of the electric slide rail 6 are slidably connected with electric sliders 7. The two electric sliders 7 are symmetrically arranged. An assembly mechanism is provided on the outer frame 1. A flange 9 is provided on the assembly mechanism. The assembly mechanism is used to assemble the flange 9 on both sides of the expansion tube 5. An extrusion mechanism for extruding the two port ends of the expansion tube 5 is provided on the assembly mechanism.

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

[0033] The assembling mechanism includes a moving rod 81. The two moving rods 81 are respectively connected to the two electric sliders 7 by bolts. On both sides of the inner wall of the outer frame 1, fixed shafts 82 are connected by bolts. The two fixed shafts 82 are symmetrically arranged. Two chutes are opened on each of the two fixed shafts 82. Sleeve tubes 83 are sleeved on each of the two fixed shafts 82. On one side of each of the two sleeve tubes 83 away from each other, two sliding blocks 84 are welded. The two sliding blocks 84 on the same sleeve tube 83 form a group. The two sliding blocks 84 in each group are respectively connected to the two chutes on the same-side fixed shaft 82 in a sliding manner. The two sleeve tubes 83 are respectively connected to the two moving rods 81 in a rotational manner. At one end of the two sleeve tubes 83 close to each other, support plates 85 are connected by bolts. The support plates 85 are used for placing and assembling the flange plates 9. Three limiting grooves are evenly opened on each of the two support plates 85. The two flange plates 9 are respectively sleeved on the two support plates 85 through the flange holes of the flange plates 9.

[0034] The pressing mechanism includes a first bevel gear 101. The two first bevel gears 101 are respectively connected to the two sleeve tubes 83 by flat keys. Rotating rods 102 are respectively connected to the two sleeve tubes 83 in a rotational manner. The two rotating rods 102 are symmetrically arranged. Second bevel gears 103 are respectively connected to the two rotating rods 102 by flat keys. Support rods 104 are welded on the two moving rods 81. The two support rods 104 are symmetrically arranged. Rotating shafts 105 are respectively connected to the two support rods 104 in a rotational manner. Transmission bevel gears 106 are respectively connected to the two rotating shafts 105 by flat keys. The two sides of the transmission bevel gear 106 are respectively meshed with the first bevel gear 101 and the second bevel gear 103. Three sliding rods 107 are evenly connected to the outer ends of the two rotating rods 102 in a sliding manner. The three sliding rods 107 on the same rotating rod 102 form a group. The two groups of sliding rods 107 are symmetrically arranged. At one end of the two groups of sliding rods 107 close to each other, three pressing rods 108 are respectively connected in a rotational manner. There are a total of six pressing rods 108. The pressing rods 108 are used for pressing the expansion tube 5. A second torsion spring 109 is connected between each pressing rod 108 and each sliding rod 107. A stop block 110 is welded on each sliding rod 107. The stop block 110 contacts one side of the pressing rod 108. The stop block 110 is used for resisting the rotation of the pressing rod 108 when pressing the expansion tube 5.

[0035] One end of the pressing rod 108 close to the flange plate 9 is obliquely arranged. The obliquely arranged pressing rod 108 is used for pressing the port of the expansion tube 5 inward.

[0036] First, the staff rotates the extrusion rod 108, and the torsion spring two 109 is twisted. At the same time, the two flange plates 9 are respectively placed on the two support plates 85 through the flange holes of the flange plates 9. Then the staff releases the extrusion rod 108, and the torsion spring two 109 resets to drive the extrusion rod 108 to reset. Then the staff squeezes the arc-shaped rod 3 through the inclined surface of the arc-shaped rod 3 and places the expansion tube 5 between the two support frames 2. Further, the expansion tube 5 causes the arc-shaped rod 3 to rotate first, and the torsion spring one 4 is twisted. When the expansion tube 5 is completely placed between the two support frames 2, the torsion spring one 4 resets to drive the arc-shaped rod 3 to reset. Under the action of the torsion spring one 4, the arc-shaped rod 3 presses on the expansion tube 5, thereby limiting the expansion tube 5. Then the staff powers on the electric slide rail 6, and the electric slide rail 6 drives the two electric sliders 7 to move towards each other. The movement of the electric slider 7 will drive the sleeve 83 and the support plate 85 to move towards the expansion tube 5 through the moving rod 81. The movement of the support plate 85 will drive the flange plate 9 to move towards the expansion tube 5. The movement of the sleeve 83 will drive the sliding block 84 to move along the chute of the fixed shaft 82 towards the expansion tube 5. When the flange plate 9 contacts the port of the expansion tube 5, the chute of the fixed shaft 82 squeezes the sliding block 84 to make the sleeve 83 rotate. The rotation of the sleeve 83 will drive the bevel gear one 101, the support plate 85 and the flange plate 9 to rotate together, thereby making the flange plate 9 rotate while being sleeved on the expansion tube 5, and making it easier for the flange plate 9 to be sleeved on the expansion tube 5. Before the flange plate 9 contacts the expansion tube 5, the extrusion rod 108 will contact the port of the expansion tube 5. Then the expansion tube 5 will resist the extrusion rod 108 and move a certain distance towards the flange plate 9. Then the extrusion rod 108 continues to move towards the expansion tube 5 to squeeze the port of the expansion tube 5. The obliquely arranged extrusion rod 108 will squeeze the port of the expansion tube 5 inward, making it easier for the port of the expansion tube 5 to enter the inner side of the flange plate 9. The rotation of the bevel gear one 101 will drive the bevel gear two 103 to rotate in the reverse direction through the transmission bevel gear 106. The reverse rotation of the bevel gear two 103 will drive the rotating rod 102, the sliding rod 107 and the extrusion rod 108 to rotate in the reverse direction together, thereby making the extrusion rod 108 and the flange plate 9 rotate in opposite directions, and making the flange plate 9 more quickly and conveniently sleeved on the port of the expansion tube 5, thereby improving the assembly efficiency. When the flange plate 9 is sleeved on the expansion tube 5, the electric slide rail 6 drives the two electric sliders 7 to move away from each other to reset. The reset of the electric slider 7 will make the sleeve 83, the support plate 85 and the rotating rod 102 reset together through the moving rod 81. The reset of the sleeve 83 drives the support plate 85 and the rotating rod 102 to rotate in the reverse direction to reset through the sliding block 84. The reset of the support plate 85 will drive the flange plate 9 to rotate in the reverse direction and then separate, making the flange plate 9 always sleeved on the expansion tube 5. After the rotating rod 102 resets a certain distance, it pulls the sliding rod 107 and the extrusion rod 108 to reset together. The flange plate 9 will resist the extrusion rod 108 to make the extrusion rod 108 rotate.The torsion spring II 109 is twisted, and then the extrusion rod 108 is separated from the flange 9. The reset of the torsion spring II 109 drives the extrusion rod 108 to reset. After the assembly is completed, the staff cuts off the power of the electric slide rail 6, and then the staff takes out the assembled expansion tube 5 and the flange 9. The expansion tube 5 will squeeze the arc-shaped rod 3 to rotate, and the torsion spring I 4 is twisted. Then, after the expansion tube 5 and the flange 9 are completely taken out, the torsion spring I 4 resets to drive the arc-shaped rod 3 to reset, thus completing the assembly.

[0037] Embodiment 2: On the basis of Embodiment 1, as Figures 8 - 12 shown, it further includes a fitting mechanism. The fitting mechanism is arranged on the rotating rod 102. The fitting mechanism is used to fit the contact part 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 connected to the two rotating rods 102 by bolts. Six pressure-receiving rods 112 are slidably connected to the limiting grooves of the two support plates 85. The three pressure-receiving rods 112 on the same support plate 85 are in a group. The mutually remote sides of the two groups of pressure-receiving rods 112 are respectively in contact with the outer sides of the two extrusion rings 111. The extrusion ring 111 is used to extrude the pressure-receiving rods 112. Fixed blocks 113 are welded to the mutually close sides of the two support plates 85. Three tension springs I 114 are respectively connected between the two extrusion rings 111 and the two fixed blocks 113. There are six tension springs I 114. An extrusion plate 115 is connected to each extrusion ring 111 by bolts. The radian of the extrusion plate 115 is the same as the inner radian of the expansion tube 5. A plurality of round holes are formed in each extrusion plate 115. The extrusion plate 115 is used to extrude the inner side of the expansion tube 5.

[0038] At first, the tension spring I 114 pulls the pressure-receiving rod 112 so that the pressure-receiving rod 112 closely adheres to the outer side of the extrusion ring 111. When the flange 9 contacts the port 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 towards the inner side of the expansion tube 5 by extruding the pressure-receiving rod 112, and the tension spring I 114 is pulled. Then, the extrusion ring 111 continues to rotate and no longer extrudes the pressure-receiving rod 112. The reset of the tension spring I 114 drives the pressure-receiving rod 112 and the extrusion plate 115 to reset together. Repeating like this, the rotation of the extrusion ring 111 will squeeze the pressure-receiving rod 112 to move back and forth. The reciprocating movement of the pressure-receiving rod 112 will drive the extrusion plate 115 to repeatedly squeeze the inner side of the expansion tube 5, so that the inner sides of the expansion tube 5 and the flange 9 are gradually fitted, which is more convenient for the staff to weld the flange 9 and the expansion tube 5 in the subsequent process, and thus the assembly effect of the flange 9 and the expansion tube 5 is better.

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

[0040] A number of protrusions are provided on the outer side of each knocking plate 123. The number of protrusions of each knocking plate 123 respectively pass through the number of round holes of each pressing plate 115. The number of protrusions on the knocking plate 123 are used to break the toughness of the port of the expansion tube 5 during knocking.

[0041] When the pressure rod 112 moves towards the inner side of the flange 9, it will drive the limiting rod 122 to move. Under the action of the magnetic ring 121, the limiting rod 122 moves to pull the second tension spring 124. As the second tension spring 124 is gradually pulled, the tension received by the knocking plate 123 will gradually increase. Subsequently, the tension of the second tension spring 124 exceeds the magnetic force of the magnetic ring 121, causing the magnetic ring 121 to disengage from the second tension spring 124. The instant reset of the second tension spring 124 will drive the knocking plate 123 to quickly move towards the inner side of the expansion tube 5. Subsequently, the reset of the pressure rod 112 drives the limiting rod 122 and the knocking plate 123 to reset together. The reset of the knocking plate 123 will contact the magnetic ring 121 again, and the magnetic ring 121 magnetically adsorbs the knocking plate 123 again. Repeating this way, the reciprocating movement of the limiting rod 122 will drive the knocking plate 123 to reciprocate through the limiting rod 122. Under the action of the magnetic ring 121 and the second tension spring 124, the protrusions of the knocking plate 123 repeatedly and quickly impact the inner side of the expansion tube 5, causing multiple small depressions to occur in the part where the expansion tube 5 contacts the inner side of the flange 9, thereby breaking the toughness of the expansion tube 5. Furthermore, it makes the expansion tube 5 not easy to rebound after fitting with the inner side of the flange 9, and further makes the fitting more sufficient, thus enhancing the assembly effect of the expansion tube 5 and the flange 9.

[0042] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and what is described in the above-mentioned embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. An assembly machine for manufacturing expansion joints, characterized in that: It includes an outer frame (1). At the bottom of the inner wall of the outer frame (1), two support frames (2) are fixedly connected. The two support frames (2) are symmetrically arranged. On both sides of the two support frames (2), arc-shaped rods (3) are rotatably connected. The two arc-shaped rods (3) on the same support frame (2) are symmetrically arranged. A first torsion spring (4) is connected between the arc-shaped rod (3) and the support frame (2). An expansion tube (5) is placed between the two support frames (2). Each arc-shaped rod (3) is in contact with the outer side of the expansion tube (5). At the bottom of the outer frame (1), an electric slide rail (6) is fixedly connected. On both sides of the electric slide rail (6), electric sliders (7) are slidably connected. The two electric sliders (7) are symmetrically arranged. An assembly mechanism is provided on the outer frame (1). A flange plate (9) is provided on the assembly mechanism. The assembly mechanism is used to assemble the flange plate (9) on both sides of the expansion tube (5). A pressing mechanism for pressing the two ports of the expansion tube (5) is provided on the assembly mechanism; The assembly mechanism includes moving rods (81). The two moving rods (81) are respectively fixedly connected to the two electric sliders (7). On both sides of the inner wall of the outer frame (1), fixed shafts (82) are fixedly connected. The two fixed shafts (82) are symmetrically arranged. Two chutes are opened on each of the two fixed shafts (82). Sleeve tubes (83) are sleeved on the two fixed shafts (82). On the side of each of the two sleeve tubes (83) away from each other, two sliding blocks (84) are fixedly connected. The two sliding blocks (84) on the same sleeve tube (83) form a group. The two sliding blocks (84) in each group are respectively slidably connected to the two chutes on the same-side fixed shaft (82). The two sleeve tubes (83) are respectively rotatably connected to the two moving rods (81). At the ends of the two sleeve tubes (83) close to each other, support plates (85) are fixedly connected. Three limiting slots are evenly opened on each of the two support plates (85). The two flange plates (9) are respectively sleeved on the two support plates (85) through the flange holes of the flange plates (9).

2. The assembling machine for manufacturing expansion joints according to claim 1, characterized in that: Each top of the arc-shaped rod (3) is provided with an inclined surface.

3. The assembling machine for manufacturing expansion joints according to claim 1, characterized in that: The extrusion mechanism includes a first bevel gear (101). The two first bevel gears (101) are respectively fixedly connected to the two sleeves (83). Rotating rods (102) are respectively rotatably connected to the two sleeves (83). The two rotating rods (102) are symmetrically arranged. Second bevel gears (103) are fixedly connected to the two rotating rods (102). Support rods (104) are fixedly connected to the two moving rods (81). The two support rods (104) are symmetrically arranged. Rotating shafts (105) are respectively rotatably connected to the two support rods (104). Driving bevel gears (106) are fixedly connected to the two rotating shafts (105). The two sides of the driving bevel gear (106) are respectively meshed with the first bevel gear (101) and the second bevel gear (103). Three sliding rods (107) are evenly and slidably connected to the outer ends of the two rotating rods (102). The three sliding rods (107) on the same rotating rod (102) form a group. The two groups of sliding rods (107) are symmetrically arranged. Three extrusion rods (108) are respectively rotatably connected to the ends of the two groups of sliding rods (107) close to each other. There are a total of six extrusion rods (108). A second torsion spring (109) is connected between each extrusion rod (108) and each sliding rod (107). A stop block (110) is fixedly connected to each sliding rod (107). The stop block (110) contacts one side of the extrusion rod (108).

4. An assembling machine for manufacturing an expansion joint according to claim 3, characterized in that: One end of the extrusion rod (108) close to the flange (9) is obliquely arranged.

5. The assembling machine for manufacturing expansion joints according to claim 3, characterized in that: It further includes a fitting mechanism. The fitting mechanism is arranged on the rotating rod (102). The fitting mechanism is used to fit the contact part 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). Pressure-receiving rods (112) are respectively slidably connected to the limiting grooves of the two support plates (85). There are six pressure-receiving rods (112). The three pressure-receiving rods (112) on the same support plate (85) form a group. The sides of the two groups of pressure-receiving rods (112) away from each other are respectively in contact with the outer sides of the two extrusion rings (111). Fixed blocks (113) are fixedly connected to the sides of the two support plates (85) close to each other. Six first tension springs (114) are connected between the two extrusion rings (111) and the two fixed blocks (113) respectively. An extrusion plate (115) is fixedly connected to each extrusion ring (111). The radian of the extrusion plate (115) is the same as the inner radian of the expansion tube (5). A number of round holes are opened in each extrusion plate (115).

6. The assembling machine for manufacturing expansion joints according to claim 5, characterized in that: It further includes a knocking mechanism which is arranged on the support plate (85). The knocking mechanism is used to knock the contact part between the expansion tube (5) and the inner wall of the flange plate (9). The knocking mechanism includes a magnetic ring (121). The two magnetic rings (121) are respectively fixedly connected to one side of the two support plates (85) close to each other. A limiting rod (122) is fixedly connected to each pressure rod (112). A knocking plate (123) is slidably connected to each limiting rod (122). The magnetic ring (121) magnetically adsorbs the knocking plate (123), and a second tension spring (124) is connected between the knocking plate (123) and the limiting rod (122).

7. An assembling machine for manufacturing expansion joints according to claim 6, characterized in that: A number of protrusions are provided on the outside of each knocking plate (123), and the number of protrusions of each knocking plate (123) respectively pass through the number of round holes of each pressing plate (115).

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