Film cutting and pre-sealing device for filling and sealing

Abstract

The utility model discloses a film cutting and pre-sealing device for filling and sealing. The film cutting and pre-sealing device comprises a film cutting and pre-sealing mechanism, a film supplying mechanism and a film collecting mechanism, wherein the film cutting and pre-sealing mechanism is used for realizing film cutting and pre-sealing actions; the film supplying mechanism is arranged on one side of the film cutting and pre-sealing mechanism; the film cutting and pre-sealing mechanism comprises a lifting driving part, a lifting frame driven by the lifting driving part to move up and down, a plurality of heat sealing heads which are arranged on the lifting frame in an up-down moving mode and seal a plurality of material cups at the same time, a first air cylinder driving the heat sealing heads to move up and down, and second air cylinders arranged at the two ends of the lifting frame. The first supporting plate is driven by the second air cylinder to move up and down, the positioning module is arranged below the heat sealing head, and the first supporting plate is provided with a plurality of cutters arranged on the periphery of the heat sealing head in a sleeving mode and an elastic pressing assembly for pressing a film on a cup opening. The film cutting and pre-sealing device is compact in structure, small in occupied space, high in working efficiency and capable of improving the film cutting and pre-sealing quality.

Description

Technical field

[0001] The utility model belongs to the technical field of mechanical processing, in particular to a film cutting and pre-sealing device for filling and sealing. [Background Technology]

[0002] During the production process of cup products, the cup needs to be filled with the product first, and then it needs to be sealed with a film after filling. The film is generally in the form of a roll. Therefore, it is necessary to design a related device to first unroll the roll, then cut out the film of a size corresponding to the cup mouth and seal it, and finally recycle the remaining film after cutting. In this process, processes such as film cutting and heat sealing are required. For example, a stable positioning film cutting mechanism disclosed in Chinese patent publication number CN212557128U includes a feeding device, a positioning cutting and sealing device, and a traction device. The film at the feeding device passes through the positioning cutting and sealing device and is then pulled by the traction device. The positioning cutting and sealing device includes a cutting and sealing bracket, a Z-axis lifting component, a cutting and sealing component, and a positioning component. , a Z-axis lifting assembly is provided on the top of the cutting and sealing bracket, and a cutting and sealing assembly is installed on the lifting part of the Z-axis lifting assembly. A positioning assembly is provided on the cutting and sealing bracket below the cutting and sealing assembly, and the film passes through the positioning assembly; although this mechanism can realize the actions of film cutting and sealing, there is only one cutting and sealing assembly on the film cutting mechanism, so it can only realize the cutting and sealing operation of one cup during filling, which has low production efficiency, and the whole structure is complex and occupies a large space, which is not conducive to the layout of the filling and sealing equipment; on the other hand, the telescopic rod of the Z-axis cylinder extends to drive the lifting frame to move down, and the cutter moves down and cuts the film. The film is cut directly here. If there is a gap between the film and the cup mouth and it is not completely fitted, the cut will be incomplete, affecting the quality of the sealing.

[0003] Therefore, it is necessary to provide a film cutting and pre-sealing device for filling and sealing to solve the above technical problems. [Utility Model Content]

[0004] The main purpose of the utility model is to provide a film cutting and pre-sealing device for filling and sealing, which has a compact structure, occupies a small space, has high working efficiency, and can improve the quality of film cutting and pre-sealing.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions: a film cutting and pre-sealing device for filling and sealing, which includes a film cutting and pre-sealing mechanism for realizing film cutting and pre-sealing actions, a film supply mechanism arranged on one side of the film cutting and pre-sealing mechanism, and a film collecting mechanism arranged on the other side of the film cutting and pre-sealing mechanism; the film cutting and pre-sealing mechanism includes a lifting drive member, a lifting frame driven by the lifting drive member to move up and down, a plurality of heat sealing heads arranged on the lifting frame for moving up and down and simultaneously realizing sealing of multiple material cups, a first cylinder for driving the heat sealing head to move up and down, a second cylinder arranged at both ends of the lifting frame, a first support plate driven by the second cylinder to move up and down, and a positioning module arranged below the heat sealing head and positioning the film and the material cup, the first support plate is provided with a cutter correspondingly sleeved on the outer periphery of the heat sealing head and an elastic pressing component for pressing the film against the cup mouth.

[0006] Furthermore, the lifting frame includes a second support plate, a third support plate and a fourth support plate connected from top to bottom, a plurality of the first cylinders are arranged on the third support plate and located between the second support plate and the third support plate, the second cylinder is arranged at both ends of the fourth support plate, and the third support plate and the fourth support plate are both provided with a first avoidance hole for avoiding the heat sealing head.

[0007] Furthermore, a driving shaft extending out of the lower surface of the fourth support plate and connected to the first support plate is provided at the end of the second cylinder.

[0008] Furthermore, a second avoidance hole for avoiding the heat sealing head is provided on the first support plate, and a heat insulation plate is provided on the lower surface of the first support plate, and the heat insulation plate surrounds the outer periphery of the elastic pressing assembly.

[0009] Furthermore, the elastic pressing assembly includes a pressing block, several sealing rings arranged at the bottom of the pressing block, several guide screws whose lower ends are fixed on the pressing block and whose upper ends are arranged on the first support plate, and a spring sleeved on the outer periphery of the guide screws. The pressing block is provided with several third avoidance holes for the up and down movement of the heat sealing head.

[0010] Furthermore, the positioning module includes a positioning plate, which includes an avoidance groove arranged on the upper side for the heat sealing head and the elastic pressing assembly to extend into, a plurality of cup inlet holes arranged on the bottom for the feeding cup to extend into, a film inlet arranged on the left side and connected to the avoidance groove for the film to enter, a film outlet arranged on the right side and connected to the avoidance groove for the waste film to flow out, and limit pins arranged on the front and rear sides for limiting the lower position of the first support plate.

[0011] Furthermore, the widths of the avoidance groove, the film inlet and the film outlet are all configured to conform to the width of the film.

[0012] Furthermore, the film feeding mechanism includes a feeding roll, a first material guiding module for guiding the film on the feeding roll to the positioning module, and a film pulling mechanism arranged on the other side of the film cutting and pre-sealing mechanism.

[0013] Furthermore, the film collection mechanism includes a second rotating motor, a second rotating shaft driven to rotate by the second rotating motor, a waste roll fixed on the second rotating shaft, and a second material guiding module that guides the cut waste onto the waste roll.

[0014] Compared with the prior art, the beneficial effects of the film cutting and pre-sealing device for filling and sealing of the utility model are:

[0015] (1) It is equipped with multiple heat sealing heads, and a cutter is coaxially arranged on the periphery of the heat sealing head, which can simultaneously cut the film and pre-seal multiple cups, with high work efficiency. In addition, the entire device has a compact structure and occupies a small space.

[0016] (2) An elastic pressing component is provided to press the film against the cup mouth. After the heat sealing head, the cutter and the elastic pressing component move downward, the elastic pressing component can first contact the film and elastically press the film and the cup mouth, thereby ensuring accurate positioning between the film and the cup mouth, preventing the film from shifting when the cutter cuts, improving the quality of film cutting and pre-sealing, and making the material cup seal more neat and beautiful;

[0017] (3) When cutting the film, the second cylinder drives the first support plate to drive the cutter and the elastic pressing assembly to move downward to perform the cutting action. During cutting, the elastic pressing assembly further presses down to press the film against the cup mouth, which can ensure the integrity of the cut when the film is cut. In addition, the transmission speed driven by the second cylinder is fast, which can enable the cutter to cut the film quickly, and can further improve the cutting efficiency.

[0018] Therefore, this solution has a compact structure, occupies a small space, has high work efficiency, and can also improve the quality of film cutting and pre-sealing.

Brief Description of the Drawings

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the film cutting and pre-sealing device for filling and sealing according to an embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the film cutting and pre-sealing mechanism according to an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the film cutting and pre-sealing mechanism according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the film cutting and pre-sealing mechanism according to an embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the film cutting and pre-sealing mechanism according to an embodiment of the present utility model;

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the positioning module according to an embodiment of the present utility model;

[0025] The numbers in the figure represent:

[0026] 5- Film cutting and pre-sealing device for filling and sealing;

[0027] 51- Film cutting and pre-sealing mechanism, 511- Lifting drive, 512- Lifting frame, 5121- Second support plate, 5122- Third support plate, 5123- Fourth support plate, 5124- First avoidance hole, 5125- Buried wire groove, 513- First cylinder, 514- Heat sealing head, 515- Second cylinder, 5151- Push shaft, 516- First support plate, 517- Cutter, 518- Elastic pressing assembly , 5181-pressing block, 5182-sealing ring, 5183-guide screw, 5184-spring, 5185-third avoidance hole, 519-positioning module, 5191-positioning plate, 5192-avoidance groove, 5193-cup inlet hole, 5194-film inlet, 5195-film outlet, 5196-limiting pin, 520-heat insulation board, 530-guide column, 540-support frame, 550-junction box;

[0028] 52-film supply mechanism, 522-feeding roll, 523-film pulling mechanism, 524-first material guiding module;

[0029] 53-film collecting mechanism, 532-second rotating shaft, 533-waste roll, 534-second material guiding module. [Specific implementation method]

[0030] Please refer to Figures 1-6The present embodiment is a film cutting and pre-sealing device for filling and sealing. The film cutting and pre-sealing device 5 for filling and sealing comprises a film cutting and pre-sealing mechanism 51 for realizing film cutting and pre-sealing, a film supply mechanism 52 arranged on one side of the film cutting and pre-sealing mechanism 51, and a film receiving mechanism 53 arranged on the other side of the film cutting and pre-sealing mechanism 51; the film cutting and pre-sealing mechanism 51 comprises a lifting driving member 511, a lifting frame 512 driven by the lifting driving member 511 to move up and down, and a lifting frame 512 movable up and down and simultaneously realizing There are several heat-sealing heads 514 for sealing multiple material cups, a first cylinder 513 for driving the heat-sealing heads 514 to move up and down, a second cylinder 515 arranged at both ends of the lifting frame 512, a first support plate 516 driven by the second cylinder 515 to move up and down, and a positioning module 519 arranged under the heat-sealing head 514 and for positioning the film. The first support plate 516 is provided with a cutter 517 correspondingly mounted on the outer periphery of the heat-sealing head 514 and an elastic pressing component 518 for pressing the film to the cup mouth.

[0031] The lifting frame 512 includes a second support plate 5121, a third support plate 5122 and a fourth support plate 5123 connected from top to bottom. The lifting drive 511 directly drives the second support plate 5121 to move up and down. The first cylinder 513 is arranged on the third support plate 5122 and is located between the second support plate 5121 and the third support plate 5122. The structure is compact and it is convenient for the lifting drive 511 to drive the second support plate 5121 to drive the first cylinder 513 and the heat sealing head 514 to move up and down together; the second cylinder 515 is arranged at both ends of the fourth support plate 5123; the third support plate 5122 and the fourth support plate 5123 are both provided with a first avoidance hole 5124 for avoiding the heat sealing head 514.

[0032] In this embodiment, a total of six heat sealing heads 514 are provided, and each corresponding heat sealing head is provided with a first cylinder 513, so a total of six first cylinders 513 are provided for driving the heat sealing heads 514 to move up and down, and the six heat sealing heads 514 are arranged in a straight line. In other embodiments, the number and arrangement of the heat sealing heads 514 can be set according to actual conditions.

[0033] The end of the second cylinder 515 is provided with a driving shaft 5151 extending out from the lower surface of the fourth support plate 5123 and connected to the first support plate 516. When the lifting drive member 511 drives the lifting frame 512 to move up and down, the driving shaft 5151 can drive the first support plate 516 to move up and down, so that the heat sealing head 514, the cutter 517 and the elastic pressing component 518 move up and down at the same time, so that the elastic pressing component 518 is first pressed on the film at the cup mouth. Moreover, the second cylinder 515 can also drive the driving shaft 5151 to drive the first support plate 516 to move up and down, so that the elastic pressing component 518 is further pressed on the film at the cup mouth, and at the same time the cutter 517 cuts the film at the cup mouth.

[0034] The cutter 517 is fixed to the lower surface of the first support plate 516 and is sleeved on the outer periphery of the heat sealing head 514. Each heat sealing head 514 is sleeved with a cutter 517, and the cutter 517 and the heat sealing head 514 are arranged coaxially. The first support plate 516 is provided with a second avoidance hole for the heat sealing head 514 to avoid. Because the heat sealing head 514 is continuously performing the heat sealing action, the bottom end temperature of the heat sealing head 514 is relatively high, which will reduce the strength of the first support plate 516. Therefore, a heat insulation plate 520 is provided on the lower surface of the first support plate 516 to prevent the high temperature of the heat sealing head 514 from affecting the strength of the first support plate 516. The heat insulation plate 520 surrounds the outer periphery of the elastic compression assembly 518.

[0035] The elastic compression assembly 518 includes a compression block 5181, several sealing rings 5182 disposed at the bottom of the compression block 5181, several guide screws 5183 whose lower ends are fixed to the compression block 5181 and whose upper ends are disposed on the first support plate 516, and a spring 5184 that is sleeved around the outer periphery of the guide screws 5183. The compression block 5181 is provided with several third avoidance holes 5185 that allow the heating head 514 to move up and down. The bottom of the compression block 5181 is provided with a receiving groove for the sealing ring 5182, which is located corresponding to the outer periphery of the third avoidance holes 5185. The sealing ring 5182 is used to compress the film around the edge of the cup mouth to ensure cutting integrity. The lower end of the spring 5184 rests on the clamping block 5181 and the upper end rests on the first support plate 516. The spring 5184 can act as a buffer, and the clamping block 5181 can float elastically up and down so that the sealing ring 5182 can automatically and elastically adapt to the film at the edge of the cup mouth, and can press the film at the edge of the cup mouth well without damaging the film.

[0036] To ensure the stability of the vertical movement of the lifting frame 512 and the first support plate 516, a plurality of guide posts 530 are provided on each of the lifting frame 512 and the first support plate 516. The plurality of guide posts 530 pass through both the lifting frame 512 and the first support plate 516, and linear bearings are provided at the locations where the guide posts 530 contact the lifting frame 512 and the first support plate 516. A support frame 540 is provided at the upper end of the guide posts 530, and the lower end of the guide posts 530 is fixed to the positioning module 519. A junction box 550 is also provided on the fourth support plate 5123. The wires connected to the plurality of heat sealing heads 514 are uniformly connected to external equipment through the junction box 550 to heat the heat sealing heads 514. A wire trough 5125 is provided on the fourth support plate 5123 for the wires to pass through.

[0037] The positioning module 519 includes a positioning plate 5191. The positioning plate 5191 includes an escape groove 5192 on the upper side, into which the heat supply head 514 and the elastic pressure assembly 518 extend; a plurality of cup inlet holes 5193 on the bottom, into which the feed cup extends; a film inlet 5194 on the left side, connected to the escape groove 5192, for film entry; a film outlet 5195 on the right side, connected to the escape groove 5192, for waste film exit; and limit pins 5196 on the front and rear sides for lowering the first support plate 516. When the cutter 517 is lowered into position, the first support plate 516 abuts against the upper ends of the limit pins 5196. The widths of the escape groove 5192, the film inlet 5194, and the film outlet 5195 are all contoured to the width of the film.

[0038] The film feeding mechanism 52 includes a feeding roll 522 , a first guiding module 524 for guiding the film on the feeding roll 522 to the positioning module 519 , and a film pulling mechanism 523 provided on the other side of the film cutting and pre-sealing mechanism 51 .

[0039] The film collection mechanism 53 includes a second rotary motor, a second rotary shaft 532 driven to rotate by the second rotary motor, a waste roll 533 fixed to the second rotary shaft 532 , and a second material guiding module 534 for guiding the cut waste onto the waste roll 533 .

[0040] When the film cutting and pre-sealing device 5 for filling and sealing provided by the present invention is applied, the material cup to be sealed is conveyed to the bottom of the positioning module 519 through the mold plate (not shown in the figure), the film pulling mechanism 523 pulls out the film and conveys the film to the inside of the positioning module 519 through the first material guiding module 524. At the same time, the pushing module (not shown in the figure) below the mold plate (not shown in the figure) pushes the material cup upward into the cup inlet hole 5193 of the positioning module 519 so that the cup mouth contacts the film, and the lifting drive member 511 drives the lifting frame 512 to move downward. At this time, the heat sealing head 514, the cutter 517 and the elastic pressing component 518 all move downward, and the elastic pressing component 518 first contacts The sealing ring 5182 at the bottom of the pressing block 5181 completely presses the film onto the cup mouth, and the second cylinder 515 drives the push shaft 5151 to drive the first support plate 516 to move downward. At this time, the elastic pressing component 518 further presses the film downward on the cup mouth. At the same time, the cutter 517 quickly cuts the film. After the cutting is completed, the first cylinder 513 drives the heat sealing head 514 to descend and completes the sealing of multiple material cups at the same time. After the sealing is completed, the material cup descends. At the same time, the lifting drive 511 drives the lifting frame 512 to move upward. At this time, the heat sealing head 514, the cutter 517 and the elastic pressing component 518 are all reset upward to wait for the next material cup sealing operation.

[0041] The above descriptions are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A film cutting and pre-sealing device for filling and sealing, characterized by: It includes a film cutting and pre-sealing mechanism for realizing film cutting and pre-sealing actions, a film supply mechanism arranged on one side of the film cutting and pre-sealing mechanism, and a film collecting mechanism arranged on the other side of the film cutting and pre-sealing mechanism; the film cutting and pre-sealing mechanism includes a lifting drive member, a lifting frame driven by the lifting drive member to move up and down, a plurality of heat sealing heads arranged on the lifting frame for moving up and down and realizing sealing of multiple material cups at the same time, a first cylinder for driving the heat sealing head to move up and down, a second cylinder arranged at both ends of the lifting frame, a first support plate driven by the second cylinder to move up and down, and a positioning module arranged below the heat sealing head for positioning the film and the material cup, the first support plate is provided with a cutter correspondingly sleeved on the outer periphery of the heat sealing head and an elastic pressing component for pressing the film against the cup mouth.

2. A film cutting and pre-sealing device for filling and sealing according to claim 1, characterized in that: The lifting frame includes a second support plate, a third support plate and a fourth support plate connected from top to bottom, a plurality of first cylinders are arranged on the third support plate and located between the second support plate and the third support plate, the second cylinders are arranged at both ends of the fourth support plate, and the third support plate and the fourth support plate are both provided with a first avoidance hole for avoiding the heat sealing head.

3. A film cutting and pre-sealing device for filling and sealing according to claim 2, characterized in that: A driving shaft extending out from the lower surface of the fourth supporting plate and connected to the first supporting plate is provided at the end of the second cylinder.

4. A film cutting and pre-sealing device for filling and sealing according to claim 1, characterized in that: The first support plate is provided with a second avoidance hole for avoiding the heat sealing head, and the lower surface of the first support plate is provided with a heat insulation plate, and the heat insulation plate surrounds the outer periphery of the elastic pressing assembly.

5. The film cutting and pre-sealing device for filling and sealing according to claim 1, characterized in that: The elastic pressing assembly includes a pressing block, several sealing rings arranged at the bottom of the pressing block, several guide screws whose lower ends are fixed to the pressing block and whose upper ends are arranged on the first support plate, and a spring sleeved on the outer periphery of the guide screws. The pressing block is provided with several third avoidance holes for the up and down movement of the heat sealing head.

6. The film cutting and pre-sealing device for filling and sealing according to claim 1, characterized in that: The positioning module includes a positioning plate, which includes an avoidance groove on the upper side for the heat sealing head and the elastic pressing assembly to extend into, a plurality of cup inlet holes on the bottom for the feeding cup to extend into, a film inlet on the left side that is connected to the avoidance groove and for the film to enter, a film outlet on the right side that is connected to the avoidance groove and for the waste film to flow out, and limit pins on the front and back sides for limiting the lower position of the first support plate.

7. A film cutting and pre-sealing device for filling and sealing according to claim 6, characterized in that: The widths of the avoidance groove, the film inlet and the film outlet are all configured to conform to the width of the film.

8. The film cutting and pre-sealing device for filling and sealing according to claim 1, characterized in that: The film feeding mechanism includes a feeding roll, a first material guiding module for guiding the film on the feeding roll to the positioning module, and a film pulling mechanism arranged on the other side of the film cutting and pre-sealing mechanism.

9. The film cutting and pre-sealing device for filling and sealing according to claim 1, characterized in that: The film collection mechanism includes a second rotary motor, a second rotary shaft driven to rotate by the second rotary motor, a waste roll fixed on the second rotary shaft, and a second material guiding module for guiding the cut waste onto the waste roll.

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