Plastic bottle cap welding machine

Abstract

The utility model belongs to the technical field of blowing, filling and sealing, and discloses a plastic bottle cap welding machine. Comprising a machine frame and a conveyor which penetrates through the machine frame and is used for conveying plastic bottles, the machine frame is fixedly connected with a bottle clamping lifting mechanism and a bottle cap clamping mechanism, the positions of the bottle clamping lifting mechanism and the bottle cap clamping mechanism correspond to each other, the bottle clamping lifting mechanism is used for clamping the plastic bottles on the conveyor, and the bottle cap clamping mechanism is used for grabbing bottle caps; a cap welding system is further arranged in the rack and used for welding the plastic bottles and bottle caps into an integrated structure. The cover welding system is provided with two groups of heating devices; one group of heating devices are used for heating and plasticizing bottle caps; and the other group of heating devices are used for heating and plasticizing bottle mouths of the bottles. Therefore, the function of welding the bottle cap and the bottle is achieved, the purpose of continuous production is achieved, and the production efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of blow-fill-seal technology, in particular to a plastic bottle cap welding machine. Background Art

[0002] When producing large-capacity containers with "European caps", for convenient perforation, it is usually necessary for the blow-fill-seal equipment to ensure that the bottle and the "European cap" are sealed when leaving the production line. The so-called "European cap" includes a rubber disk, and the spike penetrates the rubber disk and seals the bottle, and there is no contact between the rubber disk and the solution, which helps the spike to be tightly fixed. In order to tightly fix the bottle cap, it is necessary to weld the bottle cap and the bottle together. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the above problems, and provide a plastic bottle cap welding machine, in which the bottle cap clamping mechanism and the cap welding system cooperate to realize the automatic welding and fixing of the bottle cap and the bottle.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A plastic bottle cap welding machine includes a frame and a conveyor for conveying plastic bottles passing through the frame. The frame is fixedly connected with a bottle clamping and lifting mechanism and a bottle cap clamping mechanism corresponding in position. The bottle clamping and lifting mechanism is used for clamping plastic bottles on the conveyor, and the bottle cap clamping mechanism is used for grasping bottle caps. A cap welding system is further arranged in the frame for welding the plastic bottle and the bottle cap into an integral structure.

[0005] The cap welding system has two groups of heating devices; one group of the heating devices is used for heating and plasticizing the bottle cap; the other group of the heating devices is used for heating and plasticizing the bottle mouth of the bottle. Thus, the function of welding the bottle cap and the bottle is realized, the purpose of continuous production is achieved, and the production efficiency is effectively improved.

[0006] According to the utility model, further, the bottle cap clamping mechanism includes an electric cylinder providing power. The output end of the electric cylinder is connected with a support plate, and the electric cylinder drives the support plate to move up and down; a bottle cap chuck assembly with an opening is connected to the bottom surface of the support plate, and the opening of the bottle cap chuck assembly expands and contracts to realize the grasping or releasing of the bottle cap.

[0007] According to the utility model, further, the cap welding system includes a welding unit. One end of the welding unit is connected with a displacement driving assembly, and the position driving assembly drives the welding unit to move up, down, left and right. The opposite end has a heating part for welding and fixing the bottle cap and the plastic bottle.

[0008] The welding unit includes a hollow heating device fixing plate. The heating device fixing plate has a heating station for heating the bottle cap and the plastic bottle. The heating station has a bottle cap heating device and a bottle heating device arranged oppositely up and down, and respectively heats the corresponding bottle cap and plastic bottle.

[0009] According to the present utility model, further, the displacement driving assembly includes a moving bottom plate. A front and rear air cylinder for providing driving force is arranged at the bottom of the moving bottom plate. The front and rear air cylinder drives the moving bottom plate to approach or move away from the welding unit. A guiding structure for controlling the moving direction of the controller is further arranged at the bottom of the moving bottom plate, and the guiding structure is fixed to the reference surface. A vertical mounting plate and an adjustment fixing plate arranged in parallel therewith are fixedly connected to the top surface of the moving bottom plate. A vertical moving air cylinder is mounted on the surface of the vertical mounting plate facing the welding unit. The output end of the vertical moving air cylinder is connected to an upper and lower air cylinder connecting seat, and the upper and lower air cylinder connecting seat is connected to the adjustment fixing plate. The telescopic movement of the output end of the vertical moving air cylinder drives the upper and lower air cylinder connecting seat to move up and down, and further drives the adjustment fixing plate to move up and down;

[0010] A connecting rod with one end fixedly connected to the welding unit is arranged on the surface of the adjustment fixing plate. The up and down movement of the adjustment fixing plate drives the welding unit to move up and down through the connecting rod.

[0011] According to the present utility model, further, the bottle cap chuck assembly includes chuck fixing plates symmetrically arranged at the bottom of the support plate. The distance between the two chuck fixing plates is adjustable. The bottom surface of the chuck fixing plate is fixedly connected with a bottle cap chuck with an opening facing downward. The two chuck fixing plates approach or move away from each other to realize the tightening or loosening of the opening of the bottle cap chuck.

[0012] According to the present utility model, further, cooling water circulates inside the heating device fixing plate, which is convenient for controlling the heating temperature.

[0013] According to the present utility model, further, a hydraulic buffer is arranged at the stop position of the front and rear air cylinders to reduce the vibration when the welding unit stops moving.

[0014] According to the present utility model, further, it further includes a front and rear detection sensor for detecting the moving displacement of the moving bottom plate, and transmits the signal to the control system of the front and rear air cylinders.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: it can automatically weld the prefabricated bottle cap and the bottle together, avoiding human intervention, reducing the labor intensity of personnel, and greatly improving the production efficiency. Brief Description of the Drawings

[0016] Figure 1 It is a first perspective structural schematic diagram of the plastic bottle cap welding machine of the present utility model;

[0017] Figure 2 It is a second perspective structural schematic diagram of the plastic bottle cap welding machine of the present utility model;

[0018] Figure 3 It is a third perspective structural schematic diagram of the plastic bottle cap welding machine of the present utility model;

[0019] Figure 4Schematic three-dimensional view of the bottle cap clamping mechanism of the present utility model;

[0020] Figure 5 Schematic three-dimensional view of the cap welding system of the present utility model;

[0021] Figure 6 Schematic cross-sectional view of the cap welding unit of the present utility model.

[0022] In the figure: 1 - conveyor, 2 - frame, 3 - bottle cap clamping mechanism, 301 - electric cylinder, 302 - upper and lower guide rods, 303 - cross beam of the clamping mechanism, 304 - bottle cap chuck, 305 - chuck fixing plate, 306 - detection sensor, 307 - clamping cylinder, 308 - lateral guide rod, 309 - support plate, 4 - cap welding system, 40 - welding unit, 401 - vertical mounting plate, 402 - upper and lower cylinder connecting seat, 403 - front and rear guide rods, 404 - hydraulic buffer, 405 - front and rear cylinders, 406 - front and rear detection sensors, 407 - moving bottom plate, 408 - upper and lower moving cylinder, 409 - adjustment fixing plate, 4091 - connecting rod, 410 - horizontal adjustment plate, 41 - bottle cap, 42 - bottle cap heating device, 43 - bottle heating device, 44 - plastic bottle, 45 - heat insulation plate, 46 - heating device fixing plate, 5 - bottle clamping and lifting mechanism. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] As Figure 1 and Figure 2As shown in the figure, a plastic bottle cap welding machine in an embodiment of the present utility model is used to realize the automatic welding of a plastic bottle 44 and a bottle cap 41, reduce manual intervention, and improve production efficiency. It includes a frame 2 and a conveyor 1 passing through the frame 2. The conveyor 1 includes an input port and an output port opposite to the input port, which are respectively located on both sides of the frame 2. The frame 2 is fixedly connected with a bottle clamping and lifting mechanism 5 and a bottle cap clamping mechanism 3 that are corresponding in position and located above the conveyor 1. The frame 2 is also fixedly connected with a cap welding system 4 for welding the plastic bottle 44 and the bottle cap 41 into an integral structure. The bottle clamping and lifting mechanism 5 clamps the plastic bottle 44 entering from the input port of the conveyor 1 and cooperates with the bottle cap clamping mechanism 3 to realize the buckling of the plastic bottle 44 and the bottle cap 41. After buckling, the cap welding system 4 heats and welds the plastic bottle 44 and the bottle cap 41 to realize the integration of the bottle cap 41 and the plastic bottle 44. The plastic bottle 44 with the welded bottle cap 41 is output from the output port of the conveyor 1, completing the welding of the plastic bottle 44 and the bottle cap 41. Among them, the bottle clamping and lifting mechanism 5 is a prior art and is disclosed in CN216548222U, and will not be elaborated here.

[0025] As Figure 3 and Figure 4 shown in the figure, the bottle cap clamping mechanism 3 includes an electric cylinder 301 that provides power. The electric cylinder 301 is connected with a clamping mechanism cross beam 303, and the clamping mechanism cross beam 303 is fixedly connected with the frame 2 to realize the position fixation of the electric cylinder 301 and the frame 2. The output end of the electric cylinder 301 is fixedly connected with a support plate 309. The support plate 309 is arranged parallel to the lower part of the clamping mechanism cross beam 303. The output end of the electric cylinder 301 makes a telescopic movement, and then drives the support plate 309 to move up and down, realizing the up and down position change of the bottle cap chuck assembly, which will be described in detail below and is connected to the support plate 309. Among them, both the clamping mechanism cross beam 303 and the support plate 309 are long strip-shaped plates. The bottom surface of the support plate 309 is connected with symmetrically arranged chuck fixing plates 305. The bottom surface of the chuck fixing plates 305 is fixedly connected with bottle cap chucks 304. The bottle cap chucks 304 open downward. The two chuck fixing plates 305 can approach or move away from each other, realizing the tightening or loosening of the bottle cap chucks 304, and clamping or releasing the bottle cap 41. Among them, a plurality of bottle cap chucks 304 are arranged along the length direction of the chuck fixing plates 305, which is convenient for clamping a plurality of bottle caps 41 at the same time. Preferably, the length of the chuck fixing plates 305 corresponds to the length of the support plate 309 and is arranged along the edge in the length direction of the support plate 309. Preferably, two clamping cylinders 307 are arranged in the length direction of one of the chuck fixing plates 305. The output rod of the clamping cylinder 307 penetrates through the chuck fixing plate 305 on the opposite side, and drives the two chuck fixing plates 305 to approach or move away as the output rod of the clamping cylinder 307 makes a telescopic movement.

[0026] To further ensure that the forces in the length direction of the chuck fixing plate 305 are equal everywhere and the clamping degree is consistent, two clamping cylinders 307 divide the chuck fixing plate 305 into three equally spaced segments. Preferably, a transverse guide rod 308 passing through both sides of the chuck fixing plate 305 is also provided. The axis of the transverse guide rod 308 is parallel to the axis of the output rod of the clamping cylinder 307, controlling the movement trajectories of the chuck fixing plates 305 on both sides to move towards or away from each other, so that the bottoms of the multiple bottle cap chucks 304 fixed to the chuck fixing plate 305 are on the same horizontal plane.

[0027] In this embodiment, to ensure that the crossbeam 303 of the clamping mechanism is always in a horizontal state, the crossbeam 303 of the clamping mechanism is connected through an upper and lower guide rod 302, and one end of the upper and lower guide rod 302 passes through the support plate 309. The upper and lower guide rod 302 plays a guiding role to ensure that the crossbeam 303 of the clamping mechanism and the support plate 309 are always in a parallel state.

[0028] In this embodiment, as Figure 5 and Figure 6 shown, the cap welding system 4 includes a welding unit 40. One end of the welding unit 40 is connected to a displacement drive assembly, and the opposite end has a heating part for welding and fixing the bottle cap 41 and the plastic bottle 44. Specifically, the welding unit 40 includes a hollow heating device fixing plate 46. The heating device fixing plate 46 has a plurality of heating stations for heating the bottle cap 41 and the plastic bottle 44. The heating stations are provided with a bottle cap heating device 42 and a bottle heating device 43 arranged opposite to each other up and down, respectively heating and welding the corresponding bottle cap 41 and plastic bottle 44. To improve the heat insulation effect, heat insulation plates 45 are provided on the surfaces of the bottom and top of the heating device fixing plate 46 except for the heating stations. Preferably, cooling water is circulated inside the heating device fixing plate 46 to facilitate controlling the heating temperature and ensuring the heating quality of the heating device.

[0029] The displacement drive assembly includes a moving base plate 407. At the bottom of the moving base plate 407, there are front and rear cylinders 405 that provide driving force. The front and rear cylinders 405 drive the moving base plate 407 to approach or move away from the welding unit 40. On both sides of the front and rear cylinders 405, there are symmetrically arranged front and rear guide rods 403. A slide block 4071 fixedly connected to the bottom surface of the moving base plate 407 is sleeved on the outer periphery of the front and rear guide rods 403, and the moving base plate 407 slides along the length direction of the front and rear guide rods 403; on the top surface of the moving base plate 407, there is fixedly connected a vertical mounting plate 401 and an adjustment fixing plate 409 arranged parallel to it. The adjustment fixing plate 409 is located between the vertical mounting plate 401 and the welding unit 40. On the surface of the vertical mounting plate 401 facing the welding unit 40, there is mounted an up and down moving cylinder 408. The output end of the up and down moving cylinder 408 is connected to an up and down cylinder connecting seat 402. The up and down cylinder connecting seat 402 is connected to the adjustment fixing plate 409. The telescopic movement of the output end of the up and down moving cylinder 408 drives the up and down cylinder connecting seat 402 to move up and down, and further drives the adjustment fixing plate 409 to move up and down; on the surface of the adjustment fixing plate 409, there are a plurality of connecting rods 4091, one end of each of which is fixedly connected to the welding unit. The connecting rods 4091 are equidistantly distributed along the surface of the welding unit 40. The up and down movement of the adjustment fixing plate 409 drives the welding unit 40 to move up and down through the connecting rods 4091, so that the welding position is accurate. Preferably, a hydraulic buffer 404 is provided at the stop position of the front and rear cylinders 405, which can reduce the vibration when the welding unit stops moving. It also includes a front and rear detection sensor 406 for detecting the moving displacement of the moving base plate 407, and transmits the signal to the control system of the front and rear cylinders 405 to ensure the accurate welding position of the welding unit 40 and improve the welding efficiency.

[0030] The working process of the present utility model is as follows: The bottle clamping and lifting mechanism 5 clamps the plastic bottle 44 on the conveyor belt of the conveyor 1 and lifts it to the welding position, waiting for the welding of the bottle cap 41; the electric cylinder 301 descends, the clamping cylinder 307 is activated, and the bottle cap chuck 304 is controlled to grab the bottle cap 41 (the bottle cap 41 supply device is not shown), and the electric cylinder 301 rises back to the initial position; then the driving displacement adjustment assembly is driven to make the welding unit 40 approach the welding point, and the electric cylinder 301 drives its output end to descend, placing the bottle cap 41 on the bottle cap heating device 42 inside the welding unit 40 for heating. At the same time, the bottle clamping and lifting mechanism 5 places the plastic bottle 44 on the bottle heating device 43 inside the welding unit, and the heating devices respectively heat the corresponding bottle cap 41 and plastic bottle 44; after several seconds of heating and plasticizing, the electric cylinder 301 is controlled to rise to lift the bottle cap 41 and wait for welding, and then the welding unit 40 is controlled to retreat to leave a space for welding the cap; then the electric cylinder 301 is controlled to descend to combine the bottle cap 41 with the plastic bottle 44, so that the bottle cap 41 and the plastic bottle 44 are evenly welded together; then the bottle clamping and lifting mechanism 5 descends and releases the plastic bottle 44 onto the conveyor 1, and the conveyor 1 outputs the product from the output port and transports it to the next process. Thus, a welding process is completed, and the above steps can be repeated to achieve continuous cap welding operation.

[0031] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A plastic bottle cap welding machine, comprising a frame and a conveyor penetrating the frame for conveying plastic bottles, characterized in that: The frame is fixedly connected with a bottle clamping and lifting mechanism and a bottle cap clamping mechanism corresponding to the position, the bottle clamping and lifting mechanism is used to clamp the plastic bottles on the conveyor, and the bottle cap clamping mechanism is used to grab the bottle caps; a cap welding system is also provided in the frame for welding the plastic bottles and the bottle caps into an integrated structure; The cap welding system has two groups of heating devices; one group of heating devices is used for heating and plasticizing the bottle cap; the other group of heating devices is used for heating and plasticizing the bottle mouth.

2. A plastic bottle cap welding machine as claimed in claim 1, characterized in that: The bottle cap clamping mechanism includes an electric cylinder that provides power, the output end of the electric cylinder is connected to a support plate, and the electric cylinder drives the support plate to move up and down; the bottom surface of the support plate is connected to a bottle cap clamp assembly with an opening, and the opening of the bottle cap clamp assembly can be expanded and contracted to achieve the grasping or releasing of the bottle cap.

3. A plastic bottle cap welding machine as claimed in claim 1, characterized in that: The cap welding system comprises a welding unit, one end of which is connected to a displacement driving assembly, the position driving assembly drives the welding unit to move up, down, left and right, and the other end thereof is provided with a heating part for welding and fixing the bottle cap and the plastic bottle; The welding unit comprises a hollow heating device fixing plate, which has a heating station for heating bottle caps and plastic bottles. The heating station has a bottle cap heating device and a bottle heating device which are arranged opposite to each other up and down to heat the corresponding bottle caps and plastic bottles respectively.

4. A plastic bottle cap welding machine as claimed in claim 3, characterized in that: The displacement drive assembly includes a moving base plate, and the front and rear cylinders providing driving force are arranged at the bottom of the moving base plate, and the front and rear cylinders drive the moving base plate to approach or move away from the welding unit. The bottom of the moving base plate is also provided with a guide structure for the controller's moving direction, and the guide structure is fixed to the reference surface; The top surface of the movable bottom plate is fixedly connected with a vertical mounting plate and an adjustment fixing plate arranged parallel thereto, and the surface of the vertical mounting plate facing the welding unit is installed with an up-and-down moving cylinder, and the output end of the up-and-down moving cylinder is connected with an up-and-down cylinder connecting seat, and the up-and-down cylinder connecting seat is connected with the adjustment fixing plate, and the output end of the up-and-down moving cylinder is extended and retracted to drive the up-and-down cylinder connecting seat to move up and down, thereby driving the adjustment fixing plate to move up and down; A connecting rod having one end fixedly connected to the welding unit is arranged on the surface of the adjusting fixing plate, and the adjusting fixing plate moves up and down to drive the welding unit to move up and down through the connecting rod.

5. A plastic bottle cap welding machine as claimed in claim 2, characterized in that: The bottle cap chuck assembly includes a chuck fixing plate symmetrically arranged at the bottom of the support plate, the distance between the two chuck fixing plates is adjustable, the bottom surface of the chuck fixing plate is fixedly connected to the bottle cap chuck, the opening is downward, and the two chuck fixing plates are close to or away from each other to achieve tightening or loosening of the opening of the bottle cap chuck.

6. A plastic bottle cap welding machine as claimed in claim 3, characterized in that: Cooling water is circulated inside the fixing plate of the heating device to facilitate the control of the heating temperature.

7. A plastic bottle cap welding machine as claimed in claim 4, characterized in that: Hydraulic buffers are provided at the stop positions of the front and rear cylinders to reduce vibration when the welding unit stops moving.

8. A plastic bottle cap welding machine as claimed in claim 4 or 7, characterized in that: It also includes front and rear detection sensors for detecting the displacement of the moving base plate and transmitting signals to the control system of the front and rear cylinders.

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