A pipe hot melt capping machine

Abstract

The present invention discloses a pipe hot-melt capping machine, and its technical scheme includes a frame, a PLC controller, a pipe conveying mechanism, and mounting seats respectively located at both ends of the frame, wherein the mounting seats are provided with a clamping and positioning mechanism, a pipe head hot-melt mechanism, a cap delivery mechanism, and a capping mechanism, wherein the pipe conveying mechanism is installed on the upper side of the frame to convey the pipe, the clamping and positioning mechanism is located on one side of the pipe conveying mechanism, the cap delivery mechanism is located on the upper side of the capping mechanism, and the cap delivery mechanism delivers the cap opening into the capping mechanism. The conveying belt on the pipe conveying mechanism can automatically convey multiple pipes at intervals, and the pipes are automatically clamped and positioned by the PLC controller, so that the pipe head is hot-melted on one side, and multiple stations on the capping mechanism on the other side can work simultaneously to complete the conveying of the cap opening, the hot-melting of the cap opening, and the capping operation of another pipe, and the machine has the advantages of high automation, high capping efficiency, saving manual operation, and firm and stable capping.

Description

Technical Field

[0001] The invention relates to the technical field of capping, in particular to a pipe hot-melt capping machine. Background Art

[0002] In the prior art, during the production and packaging of pipes, the openings at both ends of the straight pipes should be capped before packaging. In order to improve the quality of pipes, many companies currently cap the produced pipes. If the capping method is manual capping, it will cause a large amount of human resource consumption, affect product production efficiency, and cannot guarantee timely and accurate capping. In the fully automatic production line, it will also seriously affect the degree of automation.

[0003] The pipe capping equipment on the market is complex in structure and cannot be fully automated. For example, Chinese patent literature, patent application number: CN2017213639915 discloses a pipe capping machine. The pipe conveying of the equipment may be unstable, resulting in a high error rate in capping. In addition, the pipe and the cap mouth cannot be hot-melt treated before capping, resulting in poor connection firmness, and there will be deviations in the cap delivery and assembly. The cap mouth that cannot be assembled cannot be automatically removed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a pipe hot-melt capping machine, which has the advantages of high automation, high capping efficiency, saving manual operation, and firm and stable capping.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a pipe hot-melt capping machine, comprising a frame, a PLC controller, a pipe conveying mechanism, and mounting seats respectively located at both ends of the frame, the mounting seats are provided with a clamping and positioning mechanism, a pipe head hot-melt mechanism, a capping mechanism and a capping mechanism, the pipe conveying mechanism is installed on the upper side of the frame to convey the pipe, the clamping and positioning mechanism is located on one side of the pipe conveying mechanism, and clamps the pipe on the pipe conveying mechanism, the pipe head hot-melt mechanism hot-melts the clamped pipe, the capping mechanism is located on the upper side of the capping mechanism, the capping mechanism delivers the cap mouth into the capping mechanism, and the cap mouth is assembled with the pipe through the capping mechanism.

[0006] Preferably: the pipe conveying mechanism includes a stepper motor, a rotating shaft and at least two groups of conveying components. A receiving rack is installed at the output end of the conveying component. The stepper motor is rotatably connected to the two groups of conveying components through the rotating shaft. The conveying components include a conveying frame, a conveying wheel and a conveying belt. Conveying wheels are installed on both sides of the conveying frame. The conveying belt is installed between the conveying wheels. The conveying wheel on one side of the conveying frame is connected to the rotating shaft. Several groups of positioning blocks are evenly spaced and installed on the conveying belt. Each group of positioning blocks consists of two baffles. The pipe is located between the baffles. The positioning blocks facilitate positioning of the pipe. Multiple groups of conveying components are driven by a stepper motor for conveying. The number of conveying components is determined according to the actual length of the pipe. This can save the cost of the motor. At the same time, the stepper motor is controlled by PLC, and the conveying is stable and orderly.

[0007] Preferably: the clamping and positioning mechanism includes a first positioning component and a second positioning component, the first positioning component includes a first sensor, a first upper cylinder, a first upper tube clamping block, a first lower cylinder and a first lower tube clamping block, the first upper cylinder is connected to the first upper tube clamping block, the first upper cylinder and the first lower cylinder are both fixed on the mounting seat through a cylinder seat, the first lower cylinder is connected to the first lower tube clamping block, and the first upper tube clamping block and the first lower tube clamping block cooperate to clamp the pipe; the second positioning component includes a second sensor, a second upper cylinder, a second upper tube clamping block, a second lower cylinder and a second lower tube clamping block, the second upper cylinder is connected to the second upper tube clamping block, the second upper cylinder and the second lower cylinder are both fixed on the mounting seat through a cylinder seat, the second lower cylinder is connected to the second lower tube clamping block, and the second upper tube clamping block and the second lower tube clamping block cooperate to clamp the pipe. The first positioning component is used to clamp the untreated pipe to facilitate hot melting of both ends of the pipe, while the second positioning component can clamp and position another pipe with a hot-melt treated head at the same time to cap the end of the pipe. The two can be performed simultaneously, with good positioning and clamping effects, thereby improving work efficiency. The first sensor and the second sensor can identify whether the corresponding pipe position is in place, thereby sending a signal to the PLC controller to control the corresponding cylinder to clamp the pipe, and at the same time the pipe conveying mechanism stops running, and the PLC controller controls the corresponding mechanism to work.

[0008] Preferably, the pipe head hot-melt mechanism comprises a third cylinder and a first hot-melt connector, the third cylinder is movably connected to the first hot-melt connector, and drives the die head on the first hot-melt connector to hot-melt the pipe head, which is convenient for cap installation and is very firm through hot-melt connection.

[0009] Preferably, the cap feeding mechanism includes a vibration plate, a cap opening conveying track and a cap opening pusher, wherein the vibration plate is mounted on the upper side of the mounting seat, the feeding port of the vibration plate is connected to one end of the cap opening conveying track, and the other end of the conveying track is movably matched with the cap opening pusher. The conveying track is adapted to the size of the cap opening, and the cap opening is conveyed in an orderly manner without confusion. When the cap opening reaches the discharge end of the conveying track, the cap opening pusher can automatically push the cap opening into the cap opening hole to prepare for the next operation.

[0010] Preferably: the cap mouth pusher comprises a cylinder mounting plate, a pushing cylinder, a cap delivery push rod mounting plate and a push rod, the pushing cylinder mounting plate is connected to the side plate arranged on the mounting seat, the pushing cylinder is installed on the rear side of the cylinder mounting plate, a slide rail is also arranged on the front side of the cylinder mounting plate, the pushing cylinder is connected to one end of the cap delivery push rod mounting plate, the push rod is installed on the other end of the cap delivery push rod mounting plate, the side surface of the cap delivery push rod mounting plate is slidably connected to the slide rail, the pushing cylinder drives the cap delivery push rod mounting plate to move, thereby driving the cap delivery push rod to move. The diameter of the cap delivery push rod is slightly smaller than the inner diameter of the cap mouth, which is convenient for stably pushing the cap mouth into the cap mouth hole, and has the advantage of stable feeding.

[0011] Preferably: the capping mechanism includes a servo rotary motor, a station conversion mounting plate, a station conversion plate and a cap pushing device, an opening adapted to the station conversion plate is provided on the side plate, the station conversion mounting plate and the cap pushing device are fixedly installed on the upper side of the mounting seat, the servo rotary motor is fixedly installed on one side of the station conversion mounting plate, the station conversion plate is located on the other side of the station conversion mounting plate and is connected to the rotating shaft of the servo rotary motor, at least one cap opening hole is provided on the station conversion plate, the cap opening hole is used to receive the cap opening of the cap feeding mechanism, and the cap pushing device is used to push the cap opening in the cap opening hole to assemble with the pipe. Accurate docking facilitates the cap opening feeding, and the cap pushing device is automatically operated to quickly cap the two ends of the pipe.

[0012] Preferably: the station conversion plate adopts a cross structure, and the station conversion plate is equipped with cap opening holes on the top, bottom, left and right sides. The cap opening holes on the upper side of the station conversion plate cooperate with the cap feeding mechanism, and the cap opening holes on the lower side of the station conversion plate cooperate with the cap pushing device. The cap opening holes on the left side of the station conversion plate are correspondingly provided with a cap opening hot-melting mechanism, and the cap opening holes on the right side of the station conversion plate are correspondingly provided with a waste cap removal mechanism. The servo rotary motor can orderly switch the positions of the four cap opening holes on the station conversion plate, which is convenient for the processes of coordinating the cap opening conveying, hot-melting, and assembling the cap opening. The whole process is accurately controlled by sensor induction and the cycle of the PLC controller. If the capping is unsuccessful, the waste cap can also be removed.

[0013] Preferably: the cap mouth hot-melt mechanism includes a third sensor, a mounting bracket, a fourth cylinder and a second hot-melt welder, the fourth cylinder is fixed to the side plate through the mounting bracket, the fourth cylinder is movably connected to the second hot-melt welder, and the fourth cylinder drives the die head on the second hot-melt welder to cooperate with the cap mouth; the cap-pushing device includes a cap-pushing frame, a cap-pushing cylinder, a movable connecting head and a cap-covering push rod, the cap-pushing cylinder is installed on the cap-pushing frame, the cap-pushing cylinder is connected to one end of the movable connecting head, and the other end of the movable connecting head is connected to the cap-covering push rod. The cap mouth hot-melt mechanism is used for hot-melting the cap mouth, which is convenient for installation and more firmly connected.

[0014] Preferably: the waste cap rejection mechanism comprises a cylinder stand, a fourth sensor, a sixth cylinder and a waste cap push rod, the cylinder stand is mounted on the mounting seat, the sixth cylinder is mounted on the cylinder stand, and the sixth cylinder is connected to the waste cap push rod. When the station conversion plate rotates to the next station, the fourth sensor detects that the cap mouth is located in the cap mouth hole and is not assembled successfully, and the waste cap push rod pushes it out without affecting the next operation.

[0015] The present invention has the beneficial effects of:

[0016] The conveyor belt on the pipe conveying mechanism can automatically convey multiple pipes at intervals. When the first sensor and the second sensor detect that the pipe has reached the corresponding position, they can transmit signals to the PLC controller, and the pipe can be automatically clamped and positioned through the PLC controller, so that the pipe head can be hot-melted on one side, and multiple stations on the capping mechanism on the other side can work simultaneously to complete the conveyance of the cap mouth, the hot-melting of the cap mouth and the capping operation of another pipe. It has the advantages of high degree of automation, high capping efficiency, saving manual operation, and firm and stable capping. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the pipe hot-melt capping machine of the present invention;

[0018] Figure 2 It is a structural schematic diagram of one side of the pipe hot-melt capping machine of the present invention;

[0019] Figure 3 for Figure 2 A partial enlarged view of the middle part;

[0020] Figure 4 It is a partial structural schematic diagram of the present invention;

[0021] Figure 5 for Figure 2 A schematic diagram of the structure from another angle;

[0022] Figure 6 This is a schematic diagram of the structure of the hot-melt mechanism of the pipe head of the present invention;

[0023] Figure 7 It is a partial structural schematic diagram of the cap delivery mechanism of the present invention;

[0024] Figure numerals: 1, frame; 2, PLC controller; 3, pipe conveying mechanism; 31, stepping motor; 32, rotating shaft; 33, receiving rack; 34, conveying rack; 35, conveying wheel; 36, conveying belt; 37, baffle; 4, mounting seat; 5, clamping and positioning mechanism; 51, first upper cylinder; 52, first upper clamping block; 53, first lower cylinder; 54, first lower clamping block; 55, second upper cylinder; 56, second upper clamping block; 57, second lower cylinder; 58, second lower clamping block; 6, pipe head hot-melt mechanism; 61, third cylinder; 62, first hot-melt welder; 7, cap feeding mechanism; 71, Vibrating plate; 72, cap mouth conveying track; 73, cylinder mounting plate; 74, pushing cylinder; 75, cap feeding push rod mounting plate; 76, push rod; 77, slide rail; 8, capping mechanism; 81, servo rotary motor; 82, station conversion mounting plate; 83, station conversion plate; 84, cap mouth hole; 9, cap mouth hot melting mechanism; 91, mounting bracket; 92, fourth cylinder; 93, second hot melter; 10, cap pushing device; 11, cap pushing rack; 12, cap pushing cylinder; 13, movable connector; 14, cap pushing rod; 15, waste cap rejecting mechanism; 16, cylinder stand; 17, sixth cylinder; 18, waste cap pushing rod. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are further described in detail with reference to the accompanying drawings.

[0026] like Figure 1-7 The pipe hot-melt capping machine comprises a frame 1, a PLC controller, a pipe conveying mechanism 3, and mounting seats 4 respectively located at both ends of the frame 1. The mounting seats 4 are provided with a clamping and positioning mechanism 5, a pipe head hot-melt mechanism 6, a capping mechanism 7 and a capping mechanism 8. The pipe conveying mechanism 3 is installed on the upper side of the frame 1, and the pipe is conveyed in a cyclic and orderly manner through the pipe conveying mechanism 3. The clamping and positioning mechanism 5 is located on one side of the pipe conveying mechanism 3 and is used to clamp the pipe on the pipe conveying mechanism. The pipe head hot-melt mechanism 6 hot-melts the clamped pipe. The capping mechanism 7 is located on the upper side of the capping mechanism 8. The capping mechanism 7 delivers the cap mouth to the capping mechanism 8, and the cap mouth and the pipe are assembled through the capping mechanism 8. Each mechanism is controlled by a PLC controller, and the degree of full automation is high.

[0027] The pipe conveying mechanism 3 includes a stepper motor 31, a rotating shaft 32 and at least two groups of conveying components. A material receiving frame 33 is installed at the output end of the conveying component, which can be used to place the pipes with caps. The stepper motor 31 is rotatably connected to at least two groups of conveying components through the rotating shaft 32. The conveying component includes a conveying frame 34, a conveying wheel 35 and a conveying belt 36. The conveying wheels 35 are installed on both sides of the conveying frame 34, and the conveying belt 36 is installed between the conveying wheels 35. The conveying wheel 35 on one side of the conveying frame 34 is connected to the rotating shaft 32. When the stepper motor 31 is started, it drives the rotating shaft 32 to rotate. The rotating shaft 32 drives the conveying wheel 35 connected thereto to rotate, thereby driving the conveying belt 36 to move.

[0028] Several groups of positioning blocks are evenly spaced and installed on the conveying belt 36. Each group of positioning blocks consists of two baffles 37. The pipe is located between the baffles 37. The positioning blocks are convenient for positioning the pipe to prevent shaking during movement. A stepper motor 31 can drive multiple groups of conveying components for conveying. The number of conveying components is determined according to the actual length of the pipe, which can save the cost of the motor. At the same time, the stepper motor 31 is controlled by PLC, and the conveying is stable and orderly.

[0029] The clamping and positioning mechanism 5 includes a first positioning component and a second positioning component. The first positioning component includes a first sensor, a first upper cylinder 51, a first upper tube clamping block 52, a first lower cylinder 53 and a first lower tube clamping block 54. The first upper cylinder 51 is connected to the first upper tube clamping block 52. The first upper cylinder 51 and the first lower cylinder 53 are both fixed on the mounting seat 4 through a cylinder seat. The first lower cylinder 53 is connected to the first lower tube clamping block 54; the first upper cylinder 51 drives the first upper tube clamping block 52 to move downward, and the first lower cylinder 53 drives the first lower tube clamping block 54 to move upward, and the pipe is clamped by the first upper tube clamping block 52 and the first lower tube clamping block 54.

[0030] The second positioning assembly includes a second sensor, a second upper cylinder 55, a second upper tube clamping block 56, a second lower cylinder 57 and a second lower tube clamping block 58. The second upper cylinder 55 is connected to the second upper tube clamping block 56. The second upper cylinder 55 and the second lower cylinder 57 are both fixed on the mounting base 4 through a cylinder seat. The second lower cylinder 57 is connected to the second lower tube clamping block 58. The second upper tube clamping block 56 and the second lower tube clamping block 58 cooperate to clamp the pipe.

[0031] During actual transportation, pipes are installed between adjacent conveying belts 36. The first positioning component is used to clamp untreated pipes to facilitate the equipment to hot-melt the two ends of the pipes, while the second positioning component can simultaneously clamp and position another pipe with a hot-melt head and cap the end of the pipe. The two can be performed simultaneously, with good positioning and clamping effects, thereby improving work efficiency. The first sensor and the second sensor can identify whether the corresponding pipe position is in place, thereby sending a signal to the PLC controller to control the corresponding cylinder to clamp the pipe. At the same time, the stepper motor 31 stops running, and the PLC controller controls the corresponding mechanism to work.

[0032] The pipe head hot-melt mechanism 6 includes a third cylinder 61 and a first hot-melt connector 62. The third cylinder 61 is movably connected to the first hot-melt connector 62. The hot-melt connector is a universal device for hot-melting pipes. The third cylinder 61 is used to drive the die head on the first hot-melt connector 62 to hot-melt the pipe head, which is convenient for cap installation. The hot-melt connection is very firm.

[0033] The cap feeding mechanism 7 includes a vibrating plate 71, a cap mouth conveying track 72 and a cap mouth pusher. The vibrating plate 71 is installed on the upper side of the mounting base 4. The feeding port of the vibrating plate 71 is connected to one end of the cap mouth conveying track 72. The other end of the conveying track 72 is movably cooperated with the cap mouth pusher. The conveying track 72 is vertically installed. The conveying track 72 is adapted to the size of the cap mouth. The cap mouth is transported downward in an orderly manner by gravity without confusion. The discharging end of the conveying track 72 is narrowed to prevent it from moving further downward. The discharging end of the conveying track 72 corresponds to the cap mouth hole 84 in the lateral direction. It can be automatically pushed into the cap mouth hole 84 by the cap mouth pusher to prepare for the next step of operation.

[0034] The cap mouth pusher includes a cylinder mounting plate 73, a pushing cylinder 74, a cap delivery push rod mounting plate 75 and a push rod 76. The pushing cylinder 74 mounting plate 73 is connected to the side plate provided on the mounting seat 4. The pushing cylinder 74 is installed on the rear side of the cylinder mounting plate 73. A slide rail 77 is also provided on the front side of the cylinder mounting plate 73. The pushing cylinder 74 is connected to one end of the cap delivery push rod mounting plate 75. The other end of the cap delivery push rod mounting plate 75 is installed with a push rod 76. The side of the cap delivery push rod mounting plate 75 is slidably connected with the slide rail 77. The pushing cylinder 74 drives the cap delivery push rod mounting plate 75 to move, thereby driving the cap delivery push rod 76 to move. The diameter of the cap delivery push rod 76 is slightly smaller than the inner diameter of the cap mouth, which is convenient for stably pushing the cap mouth into the cap mouth hole 84, and has the advantage of stable feeding.

[0035] The capping mechanism 8 includes a servo rotary motor 81, a station conversion mounting plate 82, a station conversion plate 83 and a cap pushing device 10. An opening is provided on the side plate to match the station conversion plate 83. The station conversion mounting plate 82 and the cap pushing device 10 are fixedly installed on the upper side of the mounting seat 4. The servo rotary motor 81 is fixedly installed on one side of the station conversion mounting plate 82. The station conversion plate 83 is located on the other side of the station conversion mounting plate 82 and is connected to the rotating shaft of the servo rotary motor 81. The station conversion plate 83 adopts a cross structure. The station conversion plate 83 is installed with cap mouth holes 84 on the top, bottom, left and right sides. The cap mouth holes 84 on the upper side of the station conversion plate 83 cooperate with the cap feeding mechanism 7, and the cap mouth holes 84 on the lower side of the station conversion plate 83 cooperate with the cap pushing device 10. The cap mouth holes 84 on the left side of the station conversion plate 83 are correspondingly provided with a cap mouth hot melting mechanism 9, and the cap mouth holes 84 on the right side of the station conversion plate 83 are correspondingly provided with a waste cap rejection mechanism 15.

[0036] The cap pushing device 10 is used to push the cap opening in the cap opening hole 84 to assemble with the pipe. The accurate docking facilitates the delivery of the cap opening. The cap pushing device 10 includes a cap pushing frame 11, a cap pushing cylinder 12, a movable connector 13 and a capping push rod 14. The cap pushing cylinder 12 is installed on the cap pushing frame 11. The cap pushing cylinder 12 is connected to one end of the movable connector 13. The bottom of the movable connector 13 can be provided with a slide rail 77 for coordinated movement, which is suitable for a long moving stroke. The other end of the movable connector 13 is connected to the capping push rod 14. The cap pushing cylinder 12 drives the capping push rod 14, which enters the cap opening hole 84 on the lower side of the station conversion plate 83, pushes the cap opening for assembly, and the automatic operation is performed to quickly cap the two ends of the pipe.

[0037] The servo rotary motor 81 can orderly switch the positions of the four cap opening holes 84 on the work station conversion plate 83, which is convenient for coordinating the multiple processes of conveying the cap opening, hot-melting the cap opening, and assembling the cap opening. The whole process is accurately controlled by sensor sensing and the cycle of the PLC controller. If the capping is unsuccessful, the waste cap can also be removed.

[0038] The cap mouth hot-melt mechanism 9 includes a third sensor, a mounting bracket 91, a fourth cylinder 92 and a second hot-melt welder. The fourth cylinder 92 is fixed to the side panel through the mounting bracket 91. The fourth cylinder 92 is movably connected to the second hot-melt welder. The fourth cylinder 92 drives the die head on the second hot-melt welder to cooperate with the cap mouth, thereby hot-melting the cap mouth, facilitating installation and making the connection more secure.

[0039] The waste cap rejecting mechanism 15 includes a cylinder stand 16, a fourth sensor, a sixth cylinder 17 and a waste cap push rod 18. The cylinder stand 16 is mounted on the mounting seat 4, the sixth cylinder 17 is mounted on the cylinder stand 16, and the sixth cylinder 17 is connected to the waste cap push rod 18. When the station conversion plate 83 rotates to the next station, if the fourth sensor detects that the cap mouth is still in the cap mouth hole 84 and has not been successfully assembled, the waste cap push rod 18 will push it out without affecting the next operation.

[0040] During actual operation of the present invention, a plurality of pipes can be automatically conveyed at intervals through the conveying belt 36 on the pipe conveying mechanism 3. When the first sensor and the second sensor detect that the pipe has reached the corresponding position, a signal can be transmitted to the PLC controller, and the pipe is automatically clamped and positioned through the PLC controller, so that the pipe head can be hot-melted on one side, and a plurality of workstations on the capping mechanism 8 can work simultaneously on the other side to complete the conveying of the cap mouth, the hot-melting of the cap mouth, and the capping operation of another pipe. The present invention has the advantages of high degree of automation, high capping efficiency, saving of manual operation, and firm and stable capping.

[0041] The above embodiments are only used to explain the inventive concept of the present invention, rather than to limit the protection of the rights of the present invention. Any non-substantial changes to the present invention using this concept shall fall within the protection scope of the present invention.

Claims

1. A pipe hot melt capping machine, characterized in that: It includes a frame, a PLC controller, a pipe conveying mechanism, and mounting seats respectively located at both ends of the frame. The mounting seats are provided with a clamping and positioning mechanism, a pipe head hot-melt mechanism, a cap delivery mechanism, and a capping mechanism. The pipe conveying mechanism is installed on the upper side of the frame to convey pipes. The clamping and positioning mechanism is located on one side of the pipe conveying mechanism and clamps the pipes on the pipe conveying mechanism. The pipe head hot-melt mechanism hot-melts the clamped pipes. The cap delivery mechanism is located on the upper side of the capping mechanism. The cap delivery mechanism delivers the cap opening into the capping mechanism, and the cap opening is assembled with the pipe through the capping mechanism. The pipe conveying mechanism includes a stepper motor, a rotating shaft and at least two groups of conveying components. A material receiving frame is installed at the output end of the conveying component. The stepper motor is rotatably connected with the two groups of conveying components through the rotating shaft. The conveying component includes a conveying frame, a conveying wheel and a conveying belt. Conveying wheels are installed on both sides of the conveying frame. The conveying belt is installed between the conveying wheels. The conveying wheel on one side of the conveying frame is connected to the rotating shaft. Several groups of positioning blocks are evenly spaced and installed on the conveying belt. Each group of positioning blocks consists of two baffles, and the pipe is located between the baffles. The clamping and positioning mechanism includes a first positioning assembly and a second positioning assembly, the first positioning assembly includes a first sensor, a first upper cylinder, a first upper pipe clamping block, a first lower cylinder and a first lower pipe clamping block, the first upper cylinder is connected to the first upper pipe clamping block, the first upper cylinder and the first lower cylinder are both fixed to the mounting seat through a cylinder seat, the first lower cylinder is connected to the first lower pipe clamping block, and the first upper pipe clamping block cooperates with the first lower pipe clamping block to clamp the pipe; the second positioning assembly includes a second sensor, a second upper cylinder, a second upper pipe clamping block, a second lower cylinder and a second lower pipe clamping block, the second upper cylinder is connected to the second upper pipe clamping block, the second upper cylinder and the second lower cylinder are both fixed to the mounting seat through a cylinder seat, the second lower cylinder is connected to the second lower pipe clamping block, and the second upper pipe clamping block cooperates with the second lower pipe clamping block to clamp the pipe; The pipe head hot-melt mechanism comprises a third cylinder and a first hot-melt welder, wherein the third cylinder is movably connected to the first hot-melt welder to drive the die head on the first hot-melt welder to hot-melt the pipe head; The cap feeding mechanism includes a vibrating plate, a cap mouth conveying track and a cap mouth pusher. The vibrating plate is installed on the upper side of the mounting seat, the vibrating plate feeding port is connected to one end of the cap mouth conveying track, and the other end of the conveying track is movably matched with the cap mouth pusher; The cap mouth pusher comprises a cylinder mounting plate, a pushing cylinder, a cap delivery push rod mounting plate and a push rod, the pushing cylinder mounting plate is connected to a side plate arranged on a mounting seat, the pushing cylinder is mounted on the rear side of the cylinder mounting plate, a slide rail is further arranged on the front side of the cylinder mounting plate, the pushing cylinder is connected to one end of the cap delivery push rod mounting plate, the push rod is installed on the other end of the cap delivery push rod mounting plate, the side surface of the cap delivery push rod mounting plate is slidably connected to the slide rail, the pushing cylinder drives the cap delivery push rod mounting plate to move, thereby driving the cap delivery push rod to move; The capping mechanism includes a servo rotary motor, a station conversion mounting plate, a station conversion plate and a cap pushing device. An opening adapted to the station conversion plate is provided on the side plate. The station conversion mounting plate and the cap pushing device are fixedly installed on the upper side of the mounting seat. The servo rotary motor is fixedly installed on one side of the station conversion mounting plate. The station conversion plate is located on the other side of the station conversion mounting plate and is connected to the rotating shaft of the servo rotary motor. At least one cap mouth hole is provided on the station conversion plate. The cap mouth hole is used to receive the cap mouth of the cap feeding mechanism. The cap pushing device is used to push the cap mouth in the cap mouth hole for assembly with the pipe.

2. The pipe hot melt capping machine according to claim 1, characterized in that: The work station conversion plate adopts a cross structure, and cap mouth holes are installed on the top, bottom, left and right of the work station conversion plate. The cap mouth holes on the upper side of the work station conversion plate cooperate with the cap feeding mechanism, and the cap mouth holes on the lower side of the work station conversion plate cooperate with the cap pushing device. The cap mouth holes on the left side of the work station conversion plate are correspondingly provided with a cap mouth hot melting mechanism, and the cap mouth holes on the right side of the work station conversion plate are correspondingly provided with a waste cap removal mechanism.

3. The pipe hot melt capping machine according to claim 1, characterized in that: The cap mouth hot-melt mechanism includes a third sensor, a mounting bracket, a fourth cylinder and a second hot-melt welder. The fourth cylinder is fixed to the side plate through the mounting bracket. The fourth cylinder is movably connected to the second hot-melt welder. The fourth cylinder drives the die head on the second hot-melt welder to cooperate with the cap mouth; the cap pushing device includes a cap pushing frame, a cap pushing cylinder, a movable connecting head and a cap pushing rod. The cap pushing frame is equipped with a cap pushing cylinder, the cap pushing cylinder is connected to one end of the movable connecting head, and the other end of the movable connecting head is connected to the cap pushing rod.

4. The pipe hot melt capping machine according to claim 2, characterized in that: The waste cap rejecting mechanism comprises a cylinder stand, a fourth sensor, a sixth cylinder and a waste cap push rod. The cylinder stand is mounted on a mounting seat, the sixth cylinder is mounted on the cylinder stand, and the sixth cylinder is connected to the waste cap push rod.

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