Diameter expanding treatment device and diameter expanding method for manufacturing aluminum reducer pipe

Abstract

The invention discloses a diameter expanding processing device for manufacturing an aluminum reducer pipe, which comprises a diameter expanding mechanism and a pipe separating mechanism, the output end of a second hydraulic cylinder is continuously moved back, and at the moment, the two ends of an aluminum pipe cannot continuously and synchronously move upwards along with an upper clamp at the bottom of the second hydraulic cylinder due to pressing limiting and downward pressing pushing of a pushing piece in the vertical direction; therefore, the situation that in the diameter expanding process, due to the fact that the clamping force of the top clamp on a pipe body is large, the pipe body is embedded into the bottom end of the upper clamp and moves upwards synchronously along with resetting of the clamp, an operator needs to manually knock the pipe body through a tool, and the pipe body is damaged can be effectively avoided. According to the aluminum pipe expanding device, the situation that the aluminum pipe falls off from the bottom end of the upper clamp is avoided, labor input of workers in the aluminum pipe expanding process is effectively reduced, meanwhile, the production technology is simplified, and the production efficiency of aluminum pipe expanding machining is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum reducer manufacturing, and in particular to a diameter expansion processing device and a diameter expansion method for aluminum reducer manufacturing. Background Art

[0002] Aluminum reducer manufacturing refers to the process of processing aluminum into pipes of different diameters through certain process methods to meet the needs of different fluid transportation. Aluminum reducers have the advantages of light weight, corrosion resistance, and good thermal conductivity. They are widely used in automobiles, aviation, chemicals, construction and other fields. During the manufacturing process, process parameters and product quality need to be strictly controlled to ensure the performance and reliability of aluminum reducers.

[0003] At present, in the process of processing aluminum reducer tubes through diameter expansion devices, it is generally necessary to drive the hydraulic telescopic cylinder on the top of the device to cooperate with the base below to fully clamp and fix the tube body to avoid shaking during the force application of the tube body, and then the outer diameter of the tube mouth is expanded outward by the front pressure of the diameter expansion die. After completing this part of the operation, during the return movement of the hydraulic telescopic cylinder, the clamp at the top has a large clamping force on the tube body, which can easily cause the tube body to be embedded in the bottom end of the upper clamp and move up synchronously with the resetting of the clamp. At this time, the operator needs to use a tool to manually knock the tube body to make it fall off from the bottom end of the upper clamp. As the number of aluminum tubes processed increases, this operation method will greatly increase the labor consumption of the operators. At the same time, the additional knocking and falling method will also increase the time required for processing, which has a very adverse effect on the processing efficiency. Summary of the invention

[0004] The object of the present invention is to provide a diameter expansion processing device and a diameter expansion method for manufacturing an aluminum reducer tube, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a diameter expansion processing device for manufacturing an aluminum reducer tube, comprising a diameter expansion mechanism and a tube removal mechanism:

[0006] The diameter expansion mechanism comprises a first tripod fixedly connected to one side of the top of the base plate, a first hydraulic cylinder fixedly connected to one side of the first tripod, a slider fixedly connected to the output end of the first hydraulic cylinder, a warp expansion end tube fixedly connected to one side of the slider, a base fixedly connected to the top of the base plate, a main frame fixedly connected to the outside of the base plate, an inner frame fixedly connected to the bottom of the main frame, a second hydraulic cylinder fixedly connected to the inside of the inner frame, an upper clamp fixedly connected to the output end of the second hydraulic cylinder, the upper clamp is driven by the second hydraulic cylinder to cooperate with the base to clamp the aluminum tube, and then the slider is driven by the first hydraulic cylinder to move, and the warp expansion end tube squeezes one end of the tube body to expand the diameter;

[0007] The tube-releasing mechanism includes a cantilever rotatably connected to the inner side of the main tripod, the bottom of one end of the cantilever is rotatably connected to a pressure rod, the bottom of the pressure rod is fixedly connected to a bottom frame, the inner side of the bottom frame is rotatably connected to a driving gear, both sides of the driving gear are meshedly connected to driving racks, one side of the driving rack is fixedly connected to a side arm, the bottom of the side arm is fixedly connected to a shift rod, the outer side of the shift rod is slidably connected to the main frame, the bottom end of the shift rod is fixedly connected to a push piece, the bottom of the other end of the cantilever is rotatably connected to a push rod, one side of the bottom of the push rod is rotatably connected to a transfer arm, and the inner side of one end of the transfer arm is fixedly connected to the output end of the second hydraulic cylinder.

[0008] Preferably, the bottom of the slider is slidably connected to a base plate, the top of the upper clamp is fixedly connected to a first sliding rod, two first sliding rods are symmetrically arranged, the outer sides of the first sliding rods are respectively slidably connected to an inner frame and a main frame, a second foot pad is fixedly connected to the other side of the top of the base plate, the inner side of the second foot pad is threadedly connected to an advancement screw, and the outer side of one end of the advancement screw is movably connected to a cylindrical resistance block.

[0009] Preferably, the bottom of the main tripod is fixedly connected to a main frame, the inner side of the driving rack is slidably connected to a slide rail, the slide rail is a T-shaped structure, one side of the slide rail is fixedly connected to the main tripod, the inner side of the push plate is slidably connected to a second slide rod, a number of second slide rods are symmetrically arranged, and both ends of the second slide rod are fixedly connected to the main frame.

[0010] Preferably, one side of the bottom of the push piece is fixedly connected to a side frame, and a plurality of side frames are symmetrically arranged. A reciprocating slide rod is slidably connected to the inner side of the side frame, and limiting rings are fixedly connected to the outer sides of both ends of the reciprocating slide rod, and a spring is movably connected to the outer side of the reciprocating slide rod, and one end of the reciprocating slide rod is fixedly connected to a hook support block, and the hook support block is an arc-shaped structure, and an arc-shaped protrusion is arranged on the top of the hook support block.

[0011] Preferably, both sides of the main frame are fixedly connected with cavity sleeves, a plurality of the cavity sleeves are symmetrically arranged, and a shift rod is slidably connected to the inner side of the cavity sleeve.

[0012] Preferably, a limiter is fixedly connected to one side of the main tripod, two limiters are symmetrically arranged, the limiter is located above the slide rail, the limiter is an L-shaped structure and a screw is threadedly connected to the inner side.

[0013] Preferably, a stabilizing clamp is fixedly connected below the water mist on the other side of the main tripod, two stabilizing clamps are symmetrically arranged, and a top rod is slidably connected to the inner side of the stabilizing clamp.

[0014] Preferably, a touch pad is fixedly connected to one side of the bottom of the push piece, the touch pad is an arc-shaped structure, and the touch pad is made of flexible material. A shift rod is fixedly connected to the top of the push piece, and a main frame is slidably connected to the outer side of the shift rod.

[0015] Preferably, the top of the side arm on the outside of the main tripod is fixedly connected with a bracket, and a plurality of the brackets are symmetrically arranged, and the brackets are all triangular structures.

[0016] A diameter expansion method of a diameter expansion processing device for manufacturing an aluminum reducer tube, comprising the following steps:

[0017] Step 1: Place the aluminum tube to be expanded on the top of the base, and then open the second hydraulic cylinder to drive the upper clamp to move downward to the position where the bottom of the upper clamp cooperates with the top of the base to fully clamp the tube body. During the process of extending the output end of the second hydraulic cylinder, the output end drives the transfer arm to move downward synchronously, so that the transfer arm drives the top rod to slide down the inside of the main frame and the main tripod. At this time, the top of the top rod pulls down the cantilever, so that the cantilever rotates in the main tripod, driving the other end of the cantilever to rotate upward, lifting the bottom frame, and driving the driving gear on the inside of the bottom frame to move upward, and the protruding teeth on the outer wall of the driving gear hook the protruding teeth on one side of the driving rack. The driving racks are moved up synchronously. During this period, if there is a height difference between the driving racks, when the top of the higher driving rack hits the limiter, it will stop moving up. After the position is fixed, the driving gear is driven in the reverse direction to rotate, and the lower driving rack on the other side is driven in an engaged manner to continue to move up to the height where the top of the driving rack on this side also hits the limiter. At this time, the positions of the driving racks on both sides are calibrated and are at the same height. During the upward movement of the driving rack, the side arm and the corresponding shift rod at its bottom are driven to rise in height, so that the bottom of the push piece is away from the top of the base, which does not affect the downward movement of the upper clamp and cooperates with the base to clamp the aluminum tube.

[0018] Step 2: After fixing the aluminum tube, rotate the push-in screw on the inner side of the second foot pad so that the cylindrical push block at one end of the push-in screw is translated to a position that fully pushes against one end of the aluminum tube, and the tube body is assisted to be limited from the side to reduce its swing amplitude, and then the first hydraulic cylinder is turned on to drive the slider to move toward the other end of the tube body on the top of the base plate, thereby driving the expanded end tube to extrude the inner wall of the other end of the aluminum tube, thereby completing the diameter expansion operation of the aluminum tube. After the diameter expansion is completed, move the push-in screw back to make the cylindrical push block at one end of the push-in screw disengage from the contact with one end of the tube body, and control the first hydraulic cylinder to drive the slider to move back and reset, so that the expanded end tube is separated from the inner wall of the other end of the aluminum tube, and the expanded end tube is driven away from the area directly below the push plate.

[0019] Step 3: Control the output end of the second hydraulic cylinder to move upward, drive the upper fixture away from the base, and in the process of gradual lifting, the transfer arm located on the outer wall of the output end of the second hydraulic cylinder moves upward synchronously, driving the push rod to push the cantilever, so that the cantilever rotates in the opposite direction in the main tripod, thereby driving the pressure rod to move downward. In this process, when the driving gear on the inner side of the bottom frame moves downward, it also drives the driving rack to move downward in the way that the protruding teeth between the driving gear and the driving rack are hooked with each other, and drives the push piece to move downward at a uniform speed through the shift rod at the bottom of the side arm on one side of the driving rack, and continues to move the output end of the second hydraulic cylinder back, so that the bottom of the push piece contacts the upper tube wall of the aluminum tube embedded in the bottom of the upper fixture. Since the diameter of the aluminum tube is expanded, the diameter of one end will be larger than the other end, so the push piece on one side will first contact the top of the aluminum tube. At this time, the bottom of the push piece on this side is supported by the top of the large-head aluminum tube and cannot continue to move downward, so it will limit the height position of the driving rack on this side, so that the side in the fixed state The driving rack drives the driving gear to rotate in the opposite direction, and the driving gear is meshed with the driving rack on the other side to drive the driving rack on the other side to continue to move down to the position where the bottom of the pushing piece on this side fully contacts the top of the small-head aluminum tube, and continuously moves back the output end of the second hydraulic cylinder. At this time, the two ends of the aluminum tube are unable to continue to move up synchronously with the upper clamp at the bottom of the second hydraulic cylinder due to the pressing limit and downward push of the pushing piece in the vertical direction, thereby falling off from the bottom of the upper clamp, and the personnel collect the reduced-diameter aluminum tube that has fallen off, which can effectively avoid the situation in which the top clamp has a large clamping force on the tube body during the diameter expansion process, causing the tube body to be embedded in the bottom end of the upper clamp, and moving up synchronously with the resetting of the clamp, requiring the operator to use a tool to manually knock on the tube body to cause it to fall off from the bottom end of the upper clamp. While effectively reducing the labor input of personnel in the process of aluminum tube diameter expansion, it also simplifies the production process and ensures the production efficiency of aluminum tube diameter expansion processing.

[0020] The present invention has at least the following beneficial effects:

[0021] 1. When the present invention is in use, a push piece is provided, the bottom of the push piece is fixedly connected to a side frame, the top of the push piece is fixedly connected to a shift rod, the outer side of the shift rod is slidably connected to the main frame, the top of the main frame is fixedly connected to a side arm, one side of the side arm is fixedly connected to a driving rack, one side of the driving rack is meshingly connected to a driving gear, the outer side of the driving gear is rotatably connected to the bottom frame, the top of the bottom frame is fixedly connected to a pressure rod, the inner side of the top end of the pressure rod is rotatably connected to a cantilever, the outer side of the cantilever is rotatably connected to the main tripod, the other end of the cantilever is rotatably connected to a push rod, the bottom of the push rod is rotatably connected to a transfer arm, the inner side of one end of the transfer arm is fixedly connected to the output end of the second hydraulic cylinder, and in the process of the second hydraulic cylinder extending the output end, the output end drives the transfer arm to move downward synchronously, so that the transfer arm drives the push rod on the inner side of the main frame and the main tripod The gears on both sides are calibrated and are at the same height. During the upward movement of the drive rack, the side arms and the corresponding shifting rods at the bottom of the drive rack are driven to move up, so that the top of the gears on the upper and lower arms of the drive rack are moved upward. The upper clamp is moved away from the top of the base without affecting the downward movement of the upper clamp and cooperating with the base to clamp the aluminum tube, controlling the output end of the second hydraulic cylinder to move upward, driving the upper clamp away from the base. In the process of gradual lifting, the transfer arm located on the outer wall of the output end of the second hydraulic cylinder moves upward synchronously, driving the top rod to push the cantilever, causing the cantilever to rotate in the opposite direction in the main tripod, thereby driving the pressure rod to move downward. In this process, when the driving gear on the inner side of the bottom frame moves downward, the protruding teeth between the driving gear and the driving rack are hooked with each other, driving the driving rack to move downward, and driving the push piece to move downward at a uniform speed through the shift rod at the bottom of the side arm on one side of the driving rack, and continuing to move the output end of the second hydraulic cylinder back so that the bottom of the push piece contacts the upper tube wall of the aluminum tube embedded in the bottom of the upper clamp. Due to the expansion of the aluminum tube, one end The diameter of one end is larger than that of the other end, so the push piece on one side will first contact the top of the aluminum tube. At this time, the bottom of the push piece on this side is supported by the top of the large-head aluminum tube and cannot move further downward. Therefore, the height position of the driving rack on this side is limited, so that the driving rack in the fixed state of this side reversely drives the driving gear to rotate, and the driving gear is meshed with the driving rack on the other side to drive the driving rack on the other side to continue to move downward to the position where the bottom of the push piece on this side fully contacts the top of the small-head aluminum tube, and the output end of the second hydraulic cylinder is continuously moved back. At this time, the two ends of the aluminum tube are unable to continue to move upward synchronously with the upper clamp at the bottom of the second hydraulic cylinder due to the pressing limit and downward push of the push piece in the vertical direction, so that they fall off from the bottom of the upper clamp, and the reduced-diameter aluminum tube that falls off is collected by personnel.It can effectively avoid the situation that during the diameter expansion process, the top clamp has a strong clamping force on the tube body, causing the tube body to be embedded in the bottom end of the upper clamp and move up synchronously with the reset of the clamp, requiring the operator to use tools to manually knock the tube body to make it fall off from the bottom end of the upper clamp. While effectively reducing the labor input of personnel in the aluminum tube diameter expansion process, it also simplifies the production process and ensures the production efficiency of the aluminum tube diameter expansion process.

[0022] 2. The present invention provides a hook support block, the bottom of the hook support block is an arc-shaped structure, the top of the hook support block is symmetrically provided with arc-shaped convex strips, one side of the hook support block is fixedly connected with a reciprocating slide rod, the outer side of the reciprocating slide rod is slidably connected with a side frame, the top of the side frame is fixedly connected with a push piece, the outer sides of both ends of the reciprocating slide rod are fixedly connected with a limit ring, and the outer side of one end of the reciprocating slide rod is movably connected with a spring. In the process that the push piece drives the hook support block to move down and contact the aluminum tube, the top of the aluminum tube first contacts the bottom of the hook support block. In the process that the hook support block continues to move down and press the aluminum tube, the aluminum tube will press the hook support block due to the influence of the arc-shaped structure of its outer wall. The reciprocating slide rod slides on the inner side of the side frame and opens to both sides. When the aluminum tube is completely above the hook support block, the pressure on the hook support block disappears, and the spring naturally opens, and cooperates with the pushing limit ring to drive the reciprocating slide rod to slide and reset, and drives the hook support block to move toward the center until the hook support blocks are under the aluminum tube. When the push plate pushes the aluminum tube to separate from the upper clamp, the aluminum tube is supported by the hook support block under it, so it can avoid the aluminum tube from falling directly and colliding with the device to cause wear on the outer surface. Finally, the aluminum tube between the push plate and the hook support block can be pulled out.

[0023] 3. The present invention provides a bracket, one side of which is fixedly connected to the main tripod and the side arm. The bracket is a triangular structure, which can effectively improve the supporting force of the main tripod and the side arm, thereby ensuring the stability of the two structures.

[0024] 4. The present invention provides a stabilizing clamp, the inner side of which is slidably connected to a push rod, one side of the stabilizing clamp is fixedly connected to a main tripod, and the outer side of the push rod is slidably connected to the main tripod and the main frame, respectively. This can effectively ensure the stability of the position of the push rod during long-term lifting and sliding, and reduce its swing amplitude. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the axonometric structure of the present invention;

[0026] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 3 for Figure 1 A schematic diagram of the enlarged structure at B in the middle;

[0028] Figure 4 It is a schematic diagram of the decomposition structure of the present invention;

[0029] Figure 5 It is a schematic diagram of the axonometric structure of the tube-releasing mechanism of the present invention;

[0030] Figure 6 It is a schematic diagram of the exploded structure of the tube removal mechanism of the present invention;

[0031] Figure 7 It is a schematic diagram of the axonometric structure of the driving gear of the present invention;

[0032] Figure 8 It is a schematic diagram of the axonometric structure of the hook bracket of the present invention.

[0033] In the figure: expansion mechanism 1, base plate 101, first tripod 102, first hydraulic cylinder 103, slider 104, expansion end tube 105, second foot pad 106, push screw 107, base 108, main frame 109, inner frame 110, second hydraulic cylinder 111, upper clamp 112, first slide bar 113, tube removal mechanism 2, main tripod 201, cantilever 202, pressure bar 203, bottom frame 204, driving gear 205, driving rack 206, slide rail 207, side arm 208, shift rod 209, push piece 210, second slide bar 211, transfer arm 212, top rod 213, side frame 214, reciprocating slide bar 215, limit ring 216, spring 217, hook support block 218, cavity sleeve column 3, limiter 4, stabilizing clamp 5, touch pad 6, bracket 7. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-8

[0036] Embodiment 1

[0037] A diameter expansion processing device for manufacturing an aluminum reducer tube comprises a diameter expansion mechanism 1 and a tube removal mechanism 2:

[0038] The diameter expansion mechanism 1 includes a first tripod 102 fixedly connected to one side of the top of the base plate 101, a first hydraulic cylinder 103 fixedly connected to one side of the first tripod 102, a slider 104 fixedly connected to the output end of the first hydraulic cylinder 103, a warp expansion end tube 105 fixedly connected to one side of the slider 104, a base 108 fixedly connected to the top of the base plate 101, a main frame 109 fixedly connected to the outside of the base plate 101, an inner frame 110 fixedly connected to the bottom of the main frame 109, a second hydraulic cylinder 111 fixedly connected to the inside of the inner frame 110, an upper clamp 112 fixedly connected to the output end of the second hydraulic cylinder 111, the upper clamp 112 is driven by the second hydraulic cylinder 111 to cooperate with the base 108 to clamp the aluminum tube, and then the slider 104 is driven by the first hydraulic cylinder 103 to move, and the warp expansion end tube 105 squeezes one end of the tube body to expand the diameter;

[0039] The tube-releasing mechanism 2 includes a cantilever 202 rotatably connected to the inner side of the main tripod 201, a pressure rod 203 is rotatably connected to the bottom of one end of the cantilever 202, a bottom of the pressure rod 203 is fixedly connected to the bottom of the bottom frame 204, a driving gear 205 is rotatably connected to the inner side of the bottom frame 204, driving racks 206 are meshingly connected to the driving gear 205 on both sides, a side arm 208 is fixedly connected to one side of the driving rack 206, a shift rod 209 is fixedly connected to the bottom of the side arm 208, a main frame 109 is slidably connected to the outer side of the shift rod 209, a push piece 210 is fixedly connected to the bottom end of the shift rod 209, a top rod 213 is rotatably connected to the bottom of the other end of the cantilever 202, a transfer arm 212 is rotatably connected to one side of the bottom of the top rod 213, and the inner side of one end of the transfer arm 212 is fixedly connected to the output end of the second hydraulic cylinder 111.

[0040] Specific implementation process: Place the aluminum tube to be enlarged on the top of the base 108, then open the second hydraulic cylinder 111 to drive the upper clamp 112 to move downward to the position where the bottom of the upper clamp 112 cooperates with the top of the base 108 to fully clamp the tube body. During the process of the second hydraulic cylinder 111 extending the output end, the output end drives the transfer arm 212 to move downward synchronously, so that the transfer arm 212 drives the top rod 213 to slide down inside the main frame 109 and the main tripod 201. At this time, the top of the top rod 213 pulls down the cantilever 202, so that the cantilever 202 rotates inside the main tripod 201, drives the other end of the cantilever 202 to rotate upward, lifts the bottom frame 204, drives the driving gear 205 inside the bottom frame 204 to move upward, and the protruding teeth on the outer wall of the driving gear 205 hook the driving rack 206 The protruding teeth on one side allow the driving rack 206 to move up synchronously. During this period, if there is a height difference between the driving racks 206, when the top of the higher driving rack 206 abuts against the limiter 4, it will stop moving up. After the position is fixed, the driving gear 205 is driven in the reverse direction to rotate, and the lower driving rack 206 on the other side is driven in an engaged manner to continue to move up until the top of the driving rack 206 on this side also abuts against the limiter 4. At this time, the positions of the driving racks 206 on both sides are calibrated and are at the same height. During the upward movement of the driving rack 206, the side arm 208 and the corresponding shift rod 209 at the bottom are driven to rise in height, so that the bottom of the push piece 210 is away from the top of the base 108, which does not affect the downward movement of the upper clamp 112 and cooperates with the base 108 to clamp the aluminum tube, thereby fixing the aluminum tube. After that, the push-in screw 107 is rotated on the inner side of the second foot pad 106, so that the cylindrical push-in block at one end of the push-in screw 107 is translated to a position that fully pushes against one end of the aluminum tube, and the tube body is auxiliary limited from the side to reduce its swing amplitude, and then the first hydraulic cylinder 103 is opened to drive the slider 104 to move toward the other end of the tube body on the top of the base plate 101, thereby driving the expanded end tube 105 to squeeze the inner wall of the other end of the aluminum tube, thereby completing the diameter expansion operation of the aluminum tube. After the diameter expansion is completed, the push-in screw 107 is moved back to make the cylindrical push-in block at one end of the push-in screw 107 break away from the contact with one end of the tube body, and the first hydraulic cylinder 103 is controlled to drive the slider 104 to move back and reset, so that the expanded end tube 105 is separated from the inner wall of the other end of the aluminum tube, and the expanded end tube 105 is driven away from the push piece 210. In the area directly below, the output end of the second hydraulic cylinder 111 is controlled to move upward, driving the upper clamp 112 away from the base 108. In the process of gradual lifting, the transfer arm 212 located on the outer wall of the output end of the second hydraulic cylinder 111 moves upward synchronously, driving the push rod 213 to push the cantilever 202, so that the cantilever 202 rotates in the opposite direction in the main tripod 201, thereby driving the pressure rod 203 to move downward. In this process, when the driving gear 205 on the inner side of the bottom frame 204 moves downward, the protruding teeth between the driving gear 205 and the driving rack 206 are hooked with each other, driving the driving rack 206 to move downward, and the shift rod 209 at the bottom of the side arm 208 on one side of the driving rack 206 drives the push piece 210 to move downward at a uniform speed, and continues to move the output end of the second hydraulic cylinder 111 back.The bottom of the push piece 210 contacts the upper tube wall of the aluminum tube embedded in the bottom of the upper clamp 112. Since the diameter of the aluminum tube is expanded, one end of the push piece 210 will be larger than the other end. Therefore, the push piece 210 on one side will first contact the top of the aluminum tube. At this time, the bottom of the push piece 210 on this side is supported by the top of the large-head aluminum tube and cannot move down further. Therefore, the height position of the driving rack 206 on this side is limited, so that the driving rack 206 on this side in the fixed state reversely drives the driving gear 205 to rotate. The driving rack 206 on the other side is driven by the engagement drive of the driving gear 205 with the driving rack 206 on the other side, so that the driving rack 206 on the other side continues to move downward until the bottom of the push piece 210 on this side fully contacts the top of the small-head aluminum tube, and the second hydraulic cylinder 1 is continuously moved back. At the output end of 11, at this time, the two ends of the aluminum tube cannot continue to move up synchronously with the upper clamp 112 at the bottom of the second hydraulic cylinder 111 due to the pressing limit and downward push of the push piece 210 in the vertical direction, so it falls off from the bottom of the upper clamp 112, and the personnel collect the reduced diameter aluminum tube after it falls off, which can effectively avoid the situation in which the top clamp has a strong clamping force on the tube body during the diameter expansion process, causing the tube body to be embedded in the bottom end of the upper clamp, and synchronously move up with the reset of the clamp, requiring the operator to use a tool to manually knock the tube body to make it fall off from the bottom end of the upper clamp. While effectively reducing the labor input of personnel in the process of aluminum tube diameter expansion, it also simplifies the production process and ensures the production efficiency of aluminum tube diameter expansion processing.

[0041] A diameter expansion method of a diameter expansion processing device for manufacturing an aluminum reducer tube, comprising the following steps:

[0042] Step 1: Place the aluminum tube to be enlarged on the top of the base 108, and then open the second hydraulic cylinder 111 to drive the upper clamp 112 to move downward to the position where the bottom of the upper clamp 112 cooperates with the top of the base 108 to fully clamp the tube body. During the process of the second hydraulic cylinder 111 extending the output end, the output end drives the transfer arm 212 to move downward synchronously, so that the transfer arm 212 drives the top rod 213 to slide down inside the main frame 109 and the main tripod 201. At this time, the top of the top rod 213 pulls down the cantilever 202, so that the cantilever 202 rotates inside the main tripod 201, drives the other end of the cantilever 202 to rotate upward, pulls up the bottom frame 204, drives the driving gear 205 inside the bottom frame 204 to move upward, and the protruding teeth on the outer wall of the driving gear 205 hook the driving rack 206 The protruding teeth on one side allow the driving rack 206 to move up synchronously. During this period, if there is a height difference between the driving racks 206, when the top of the higher driving rack 206 abuts against the limiter 4, it will stop moving up. After the position is fixed, the driving gear 205 is driven in the reverse direction to rotate, and the lower driving rack 206 on the other side is driven in an engaged manner to continue to move up until the top of the driving rack 206 on this side also abuts against the limiter 4. At this time, the positions of the driving racks 206 on both sides are calibrated and are at the same height. During the upward movement of the driving rack 206, the side arm 208 and the corresponding shift rod 209 at the bottom are driven to rise in height, so that the bottom of the push piece 210 is away from the top of the base 108, which does not affect the downward movement of the upper clamp 112 and cooperates with the base 108 to clamp the aluminum tube.

[0043] Step 2: After fixing the aluminum tube, rotate the push-in screw 107 on the inner side of the second foot pad 106 so that the cylindrical push-in block at one end of the push-in screw 107 is translated to a position that fully pushes against one end of the aluminum tube, and the tube body is auxiliary limited from the side to reduce its swing amplitude, and then the first hydraulic cylinder 103 is turned on to drive the slider 104 to move toward the other end of the tube body on the top of the base plate 101, thereby driving the expanded end tube 105 to squeeze the inner wall of the other end of the aluminum tube, thereby completing the diameter expansion operation of the aluminum tube. After the diameter expansion is completed, move the push-in screw 107 back to make the cylindrical push-in block at one end of the push-in screw 107 disengage from the contact with one end of the tube body, control the first hydraulic cylinder 103 to drive the slider 104 to move back and reset, so that the expanded end tube 105 is separated from the inner wall of the other end of the aluminum tube, and drives the expanded end tube 105 away from the area directly below the push piece 210.

[0044] Step 3: Control the output end of the second hydraulic cylinder 111 to move upward, drive the upper clamp 112 away from the base 108, and in the process of gradual lifting, the transfer arm 212 located on the outer wall of the output end of the second hydraulic cylinder 111 moves upward synchronously, driving the push rod 213 to push the cantilever 202, so that the cantilever 202 rotates in the opposite direction in the main tripod 201, thereby driving the pressure rod 203 to move downward. In this process, the driving gear 205 on the inner side of the bottom frame 204 also drives the driving gear 205 and the driving rack 206 to hook each other when moving downward. The rack 206 moves downward, and drives the push piece 210 to move downward at a uniform speed by driving the shift rod 209 at the bottom of the side arm 208 on one side of the rack 206, and continues to move the output end of the second hydraulic cylinder 111 back, so that the bottom of the push piece 210 contacts the upper tube wall of the aluminum tube engaged with the bottom of the upper clamp 112. Since the diameter of the aluminum tube is expanded, the diameter of one end is larger than the other end, so the push piece 210 on one side will first contact the top of the aluminum tube. At this time, the bottom of the push piece 210 on this side is supported by the top of the large-head aluminum tube and cannot continue to move downward, thereby limiting the side driving gear The height position of the rack 206 is adjusted, so that the driving rack 206 in the fixed state on this side reversely drives the driving gear 205 to rotate, and the driving gear 205 is driven by the meshing drive of the driving rack 206 on the other side, so that the driving rack 206 on the other side continues to move downward to the position where the bottom of the pushing piece 210 on this side fully contacts the top of the small-head aluminum tube, and the output end of the second hydraulic cylinder 111 is continuously moved back. At this time, the two ends of the aluminum tube cannot be in contact with the upper clamp at the bottom of the second hydraulic cylinder 111 in the vertical direction due to the pressing limit and downward push of the pushing piece 210. The tool 112 continues to move upward synchronously, thereby falling off from the bottom of the upper clamp 112, and the reduced diameter aluminum tube is collected by personnel after falling off. This can effectively avoid the situation in which, during the diameter expansion process, the top clamp has a strong clamping force on the tube body, causing the tube body to be embedded in the bottom end of the upper clamp and move upward synchronously with the resetting of the clamp. The operator is required to use a tool to manually knock the tube body to make it fall off from the bottom end of the upper clamp. While effectively reducing the labor input of personnel in the process of aluminum tube diameter expansion, it also simplifies the production process and ensures the production efficiency of aluminum tube diameter expansion processing.

[0045] Embodiment 2

[0046] Based on Example 1:

[0047] The bottom of the slider 104 is slidably connected to the base plate 101, and the top of the upper clamp 112 is fixedly connected to the first slide bar 113. Two first slide bars 113 are symmetrically arranged. The outer sides of the first slide bars 113 are slidably connected to the inner frame 110 and the main frame 109 respectively. The other side of the top of the base plate 101 is fixedly connected to the second foot pad 106, and the inner side of the second foot pad 106 is threadedly connected to the push screw 107, and the outer side of one end of the push screw 107 is movably connected to a cylindrical push block. The aluminum tube is clamped and fixed by the upper clamp 112 and the base 108, and then the push screw 107 is pushed forward to contact one end of the aluminum tube. Finally, the slider 104 is driven by the first hydraulic cylinder 103 to slide, and the expansion end tube 105 is driven forward to the inner wall of the other end of the aluminum tube for extrusion and expansion, thereby completing the diameter expansion operation.

[0048] The main frame 109 is fixedly connected to the bottom of the main tripod 201, and the inner side of the driving rack 206 is slidably connected to the slide rail 207. The slide rail 207 is a T-shaped structure. One side of the slide rail 207 is fixedly connected to the main tripod 201, and one side of the inner side of the push piece 210 is slidably connected to the second slide bar 211. Several second slide bars 211 are symmetrically arranged, and both ends of the second slide bar 211 are fixedly connected to the main frame 109. The driving rack 206 can be driven to rise and fall with the driving gear 205 by hooking between the protruding racks between the driving gear 205 and the driving rack 206. At the same time, when there is a height difference between the driving racks 206, the driving rack 206 that reaches the fixed position first can reversely drive the driving gear 205 to rotate in the bottom frame 204 in a meshing manner, so that the driving gear 205 continues to drive the driving rack 206 with a lower height on the other side to continue to move to a height position flush with the already fixed driving rack 206.

[0049] A side frame 214 is fixedly connected to one side of the bottom of the push piece 210, and a plurality of side frames 214 are symmetrically arranged. A reciprocating slide rod 215 is slidably connected to the inner side of the side frame 214. The outer sides of the two ends of the reciprocating slide rod 215 are fixedly connected to limit rings 216. The outer side of the reciprocating slide rod 215 is movably connected to a spring 217. One end of the reciprocating slide rod 215 is fixedly connected to a hook support block 218. The hook support block 218 is an arc-shaped structure, and an arc-shaped protrusion is arranged on the top of the hook support block 218. In the process of the push piece 210 driving the hook support block 218 to move down and contact the aluminum tube, the top of the aluminum tube first contacts the bottom of the hook support block 218. In the process of the hook support block 218 continuing to move down and press the aluminum tube, the aluminum tube will press the hook support block 218 due to the influence of the arc structure of its outer wall. 8 cooperates with the reciprocating slide bar 215 to slide on the inner side of the side frame 214 and open to both sides. When the aluminum tube is completely above the hook support block 218, the pressure on the hook support block 218 disappears, and the spring 217 naturally opens, and cooperates with the pushing limit ring 216 to drive the reciprocating slide bar 215 to slide and reset, and drives the hook support block 218 to move toward the center direction until the hook support block 218 is under the aluminum tube. When the push piece 210 pushes the aluminum tube to separate from the upper clamp 112, since there is a hook support block 218 under the aluminum tube for support, it can prevent the aluminum tube from falling directly and colliding with the device to cause wear on the outer surface. Finally, the aluminum tube located between the push piece 210 and the hook support block 218 can be pulled out by personnel.

[0050] The main frame 109 is fixedly connected with cavity sleeve columns 3 on both sides. There are several cavity sleeve columns 3 symmetrically arranged. The inner side of the cavity sleeve column 3 is slidably connected with a shift rod 209, which can effectively ensure the position stability of the shift rod 209 during the sliding and lifting process and reduce the swing amplitude.

[0051] Embodiment 3

[0052] Based on Example 1:

[0053] A limiter 4 is fixedly connected to one side of the main tripod 201. Two limiters 4 are symmetrically arranged. The limiter 4 is located above the slide rail 207. The limiter 4 is an L-shaped structure and has a screw threaded inside, which can effectively set and adjust the height limit position of the driving rack 206.

[0054] A stabilizing clamp 5 is fixedly connected below the water mist on the other side of the main tripod 201. Two stabilizing clamps 5 are symmetrically arranged. A top rod 213 is slidably connected to the inner side of the stabilizing clamp 5, which can effectively ensure the position stability of the top rod 213 during long-term lifting and sliding, and reduce its swing amplitude.

[0055] A touch pad 6 is fixedly connected to one side of the bottom of the push piece 210. The touch pad 6 is an arc-shaped structure and is made of flexible material. A shift rod 209 is fixedly connected to the top of the push piece 210. The main frame 109 is slidably connected to the outside of the shift rod 209, which can effectively reduce the degree of wear on the outer surface of the aluminum tube during the pressing and pushing process.

[0056] The top of the side arm 208 outside the main tripod 201 is fixedly connected with a bracket 7. A plurality of brackets 7 are symmetrically arranged. The brackets 7 are all triangular structures, which can effectively increase the supporting force of the main tripod 201 and the side arm 208, thereby ensuring the stability of the two structures.

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A diameter expansion device for manufacturing an aluminum reducer tube, comprising a diameter expansion mechanism (1) and a tube removal mechanism (2), characterized in that: The diameter expansion mechanism (1) comprises a first support (102) fixedly connected to one side of the top of a base plate (101); a first hydraulic cylinder (103) is fixedly connected to one side of the first support (102); a slider (104) is fixedly connected to the output end of the first hydraulic cylinder (103); a diameter expansion end tube (105) is fixedly connected to one side of the slider (104); a base (108) is fixedly connected to the top of the base plate (101); and a main frame (108) is fixedly connected to the outside of the base plate (101). 109), the bottom of the main frame (109) is fixedly connected to an inner frame (110), the inner side of the inner frame (110) is fixedly connected to a second hydraulic cylinder (111), the output end of the second hydraulic cylinder (111) is fixedly connected to an upper clamp (112), the upper clamp (112) is driven by the second hydraulic cylinder (111) to cooperate with the base (108) to clamp the aluminum tube, and then the first hydraulic cylinder (103) drives the slider (104) to move, and the diameter of one end of the tube body is expanded by squeezing the expansion end tube (105); The tube-releasing mechanism (2) comprises a cantilever (202) rotatably connected to the inner side of the main tripod (201); the bottom of one end of the cantilever (202) is rotatably connected to a pressure rod (203); the bottom of the pressure rod (203) is fixedly connected to a bottom frame (204); the inner side of the bottom frame (204) is rotatably connected to a driving gear (205); both sides of the driving gear (205) are meshedly connected to driving racks (206); one side of the driving rack (206) is fixedly connected to a side arm (208) ), the bottom of the side arm (208) is fixedly connected to a shift rod (209), the outer side of the shift rod (209) is slidably connected to a main frame (109), the bottom of the shift rod (209) is fixedly connected to a push piece (210), the bottom of the other end of the cantilever (202) is rotatably connected to a push rod (213), one side of the bottom of the push rod (213) is rotatably connected to a transfer arm (212), and the inner side of one end of the transfer arm (212) is fixedly connected to the output end of the second hydraulic cylinder (111).

2. The diameter expansion processing device for manufacturing an aluminum reducer tube according to claim 1, characterized in that: The bottom of the slider (104) is slidably connected to a base plate (101), the top of the upper clamp (112) is fixedly connected to a first slide rod (113), two first slide rods (113) are symmetrically arranged, the outer sides of the first slide rods (113) are slidably connected to an inner frame (110) and a main frame (109), respectively, the other side of the top of the base plate (101) is fixedly connected to a second foot pad (106), the inner side of the second foot pad (106) is threadedly connected to an advancing screw rod (107), and the outer side of one end of the advancing screw rod (107) is movably connected to a cylindrical stop block.

3. The diameter expansion processing device for manufacturing an aluminum reducer tube according to claim 1, characterized in that: The bottom of the main tripod (201) is fixedly connected to a main frame (109); the inner side of the driving rack (206) is slidably connected to a slide rail (207); the slide rail (207) is a T-shaped structure; one side of the slide rail (207) is fixedly connected to the main tripod (201); one side of the inner side of the push piece (210) is slidably connected to a second slide rod (211); a plurality of second slide rods (211) are symmetrically arranged; and both ends of the second slide rod (211) are fixedly connected to the main frame (109).

4. The diameter expansion processing device for manufacturing an aluminum reducer tube according to claim 1, characterized in that: A side frame (214) is fixedly connected to one side of the bottom of the push piece (210), and a plurality of side frames (214) are symmetrically arranged. A reciprocating slide rod (215) is slidably connected to the inner side of the side frame (214), and the outer sides of both ends of the reciprocating slide rod (215) are fixedly connected to limit rings (216), and the outer side of the reciprocating slide rod (215) is movably connected to a spring (217), and one end of the reciprocating slide rod (215) is fixedly connected to a hook support block (218), and the hook support block (218) is an arc-shaped structure, and an arc-shaped protrusion is arranged on the top of the hook support block (218).

5. The diameter expansion processing device for manufacturing an aluminum reducer tube according to claim 1, characterized in that: The two sides of the main frame (109) are fixedly connected with cavity sleeves (3), a plurality of the cavity sleeves (3) are symmetrically arranged, and a shift rod (209) is slidably connected to the inner side of the cavity sleeves (3).

6. The diameter expansion processing device for manufacturing an aluminum reducer tube according to claim 1, characterized in that: One side of the main tripod (201) is fixedly connected to a limiter (4), two limiters (4) are symmetrically arranged, and the limiters (4) are located above the slide rail (207). The limiters (4) are L-shaped structures and a screw is threadedly connected to the inner side.

7. The diameter expansion processing device for manufacturing an aluminum reducer tube according to claim 1, characterized in that: A stabilizing clamp (5) is fixedly connected below the water mist on the other side of the main tripod (201), two stabilizing clamps (5) are symmetrically arranged, and a top rod (213) is slidably connected to the inner side of the stabilizing clamp (5).

8. The diameter expansion processing device for manufacturing an aluminum reducer tube according to claim 1, characterized in that: A touch pad (6) is fixedly connected to one side of the bottom of the push piece (210), the touch pad (6) is an arc-shaped structure, and the touch pad (6) is made of a flexible material. A shift rod (209) is fixedly connected to the top of the push piece (210), and a main frame (109) is slidably connected to the outside of the shift rod (209).

9. The diameter expansion processing device for manufacturing an aluminum reducer tube according to claim 1, characterized in that: The tops of the side arms (208) outside the main tripod (201) are fixedly connected with brackets (7), and a plurality of brackets (7) are symmetrically arranged, and the brackets (7) are all triangular structures.

10. The diameter expansion method of the diameter expansion processing device for manufacturing an aluminum reducer tube according to claim 1, characterized in that: The following steps are included Step 1: Place the aluminum tube to be expanded on the top of the base (108), and then open the second hydraulic cylinder (111) to drive the upper clamp (112) to move downward to the position where the bottom of the upper clamp (112) cooperates with the top of the base (108) to fully clamp the tube body. In the process of extending the output end of the second hydraulic cylinder (111), the output end drives the transfer arm (212) to move downward synchronously, so that the transfer arm (212) drives the push rod (213) to slide down inside the main frame (109) and the main tripod (201). At this time, the top of the push rod (213) pulls down the cantilever (202), so that the cantilever (202) rotates inside the main tripod (201), drives the other end of the cantilever (202) to rotate upward, pulls up the bottom frame (204), drives the driving gear (205) inside the bottom frame (204) to move upward, and the protruding teeth on the outer wall of the driving gear (205) hook the driving rack. The protruding teeth on one side of the drive rack (206) cause the drive rack (206) to move upward synchronously. During this period, if there is a height difference between the drive racks (206), when the top of the higher drive rack (206) abuts against the stopper (4), the drive rack (206) stops moving upward. After the position is fixed, the drive gear (205) is driven in the reverse direction to rotate, and the lower drive rack (206) on the other side is driven in a meshing manner to continue to move upward until the top of the drive rack (206) on this side also abuts against the stopper (4). At this time, the positions of the drive racks (206) on both sides are calibrated and are at the same height. During the upward movement of the drive rack (206), the side arm (208) and the corresponding shift rod (209) at the bottom are driven to rise in height, so that the bottom of the push piece (210) is away from the top of the base (108), without affecting the downward movement of the upper clamp (112) and cooperating with the base (108) to clamp the aluminum tube. Step 2: After fixing the aluminum tube, the push-in screw (107) is rotated on the inner side of the second foot pad (106) so that the cylindrical push-in block at one end of the push-in screw (107) is translated to a position that fully pushes against one end of the aluminum tube, and the tube body is auxiliary limited from the side to reduce its swing amplitude, and then the first hydraulic cylinder (103) is opened to drive the slider (104) to move on the top of the base plate (101) toward the other end of the tube body, thereby driving the expansion end tube (105) to squeeze the inner wall of the other end of the aluminum tube, thereby completing the diameter expansion operation of the aluminum tube. After the diameter expansion is completed, the push-in screw (107) is moved back so that the cylindrical push-in block at one end of the push-in screw (107) is separated from the contact with one end of the tube body, and the first hydraulic cylinder (103) is controlled to drive the slider (104) to move back and reset, so that the expansion end tube (105) is separated from the inner wall of the other end of the aluminum tube, and the expansion end tube (105) is driven away from the area directly below the push plate (210). Step 3: Control the output end of the second hydraulic cylinder (111) to move upward, drive the upper clamp (112) away from the base (108), and in the process of gradually lifting, the transfer arm (212) located on the outer wall of the output end of the second hydraulic cylinder (111) moves upward synchronously, driving the push rod (213) to push the cantilever (202), so that the cantilever (202) rotates in the opposite direction in the main tripod (201), thereby driving the pressure rod (203) to move downward. In this process, when the driving gear (205) on the inner side of the bottom frame (204) moves downward, the protruding teeth between the driving gear (205) and the driving rack (206) are also mutually engaged. The driving rack (206) is driven to move downward by a hooking method, and the push piece (210) is driven to move downward at a uniform speed by a shift rod (209) at the bottom of a side arm (208) on one side of the driving rack (206), and the output end of the second hydraulic cylinder (111) is continuously moved back, so that the bottom of the push piece (210) contacts the upper tube wall of the aluminum tube engaged with the bottom of the upper clamp (112). Since the diameter of the aluminum tube is expanded, one end of the push piece (210) is larger than the other end, so the push piece (210) on one side will first contact the top of the aluminum tube. At this time, the bottom of the side push piece (210) is supported by the top of the large-head aluminum tube and cannot continue to move downward. The driving rack (206) on the other side is moved, thereby limiting the height position of the driving rack (206) on the side, so that the driving rack (206) in the fixed state on the side reversely drives the driving gear (205) to rotate, and the driving gear (205) is driven by the driving rack (206) on the other side to continue to move downward to the position where the bottom of the pushing piece (210) on the side fully contacts the top of the small-headed aluminum tube, and the output end of the second hydraulic cylinder (111) is continuously moved back. At this time, the two ends of the aluminum tube cannot be in contact with the first one in the vertical direction due to the pressing limit and downward push of the pushing piece (210). The upper clamp (112) at the bottom of the second hydraulic cylinder (111) continues to move upward synchronously, thereby falling off from the bottom of the upper clamp (112), and the variable diameter aluminum tube that has fallen off is collected by personnel, which can effectively avoid the situation in which, during the diameter expansion process, the top clamp has a strong clamping force on the tube body, causing the tube body to be embedded in the bottom end of the upper clamp and move upward synchronously with the resetting of the clamp, requiring the operator to use a tool to manually knock the tube body to cause it to fall off from the bottom end of the upper clamp. While effectively reducing the labor input of personnel in the aluminum tube diameter expansion process, it also simplifies the production process and ensures the production efficiency of the aluminum tube diameter expansion processing.

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