A film packaging equipment

Abstract

The present invention relates to the field of film packaging technology, and discloses a film packaging device, comprising a base, wherein the lower side of the top of the bracket is connected to a movable plate via a third electric telescopic column, a vertical plate is fixed to the bottom of the movable plate, an inner sleeve and an outer sleeve are fixed to the front side of the vertical plate via a first fixing bolt, the inner sleeve passes through the outer sleeve, a cutting mechanism is provided on the movable plate, the cutting mechanism passes through the inner sleeve, a fifth electric telescopic column is fixed to the bottom of the movable plate, and an electric heating cover is fixed to the bottom of the fifth electric telescopic column via a second fixing bolt. In the film packaging device, two first oil cylinders are spaced apart from each other, making it convenient to adjust the spacing between the two piston plates according to the size of the cylindrical plastic film. When the movable block and the second piston column move upward, the piston plate moves upward, making it convenient to adjust the height of the piston plate according to the height of the plastic film. When the cylindrical plastic film is put on the material, the piston plate can support the plastic film.

Description

Technical Field

[0001] The present invention relates to the technical field of sleeve film packaging, in particular to a sleeve film packaging device. Background Art

[0002] The sleeve film machine is suitable for heat shrink packaging of various bottles with or without trays, such as cans, mineral water, beer, glass bottles, soft packaging, beverages, etc. It can be used in conjunction with a constant temperature PE shrink machine to achieve a perfect packaging effect for the items. It can also be used for sealing the mouths of bottled and barreled items and sticking labels.

[0003] Existing film packaging equipment generally needs to put a plastic film on the material before laminating. The size of the plastic film should be slightly larger than the size of the bottle mouth. During the transportation process, the plastic film is easy to shake and its position is easy to shift, which will cause the subsequent laminating effect to be not smooth and uniform, thereby affecting the appearance. In view of the above problems, the existing equipment needs to be improved. Summary of the Invention

[0004] The object of the present invention is to provide a film packaging device to solve the problem proposed in the above background technology that the existing film packaging device generally needs to put a plastic film on the material before laminating, and the size of the plastic film is slightly larger than the size of the bottle mouth. During the transportation process, the plastic film is easy to shake and its position is easy to shift, which will cause the subsequent laminating effect to be not smooth and uniform, thereby affecting the appearance of the appearance.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a film packaging device, comprising a base, support plates symmetrically fixed on both sides of the upper end surface of the base, a double-layer conveyor belt rotatably connected between the front and rear support plates, a height and spacing adjustment structure fixed on the outer surface of the double-layer conveyor belt, the height and spacing adjustment structure comprising a support seat, a first oil cylinder symmetrically and slidingly connected on both sides of the upper end surface of the support seat, a piston plate slidably connected in the first oil cylinder, a support plate slidably connected to the inner end surface of the piston plate, a limit pin fixed on the top of the support plate, and the limit pin passes through the top of the piston plate.

[0006] A bracket is fixed to the upper end surface of the base, a fixing plate is fixed to the front side of the bracket, a first electric telescopic column and a second electric telescopic column are fixed to the upper end surface of the fixing plate, a first extrusion bar is fixed to the top of the first electric telescopic column, and a second extrusion bar is fixed to the top of the second electric telescopic column.

[0007] The lower side of the top of the bracket is connected to the movable plate through the third electric telescopic column, the bottom of the movable plate is fixed with a vertical plate, the front side of the vertical plate is fixed with an inner sleeve and an outer sleeve through a first fixing bolt, the inner sleeve passes through the outer sleeve, a cutting mechanism is provided on the movable plate, the cutting mechanism passes through the inner sleeve, the bottom of the movable plate is fixed with a fifth electric telescopic column, and the bottom of the fifth electric telescopic column is fixed with an electric heating cover through a second fixing bolt.

[0008] Preferably, first sliding grooves are symmetrically provided on both sides of the upper end surface of the support seat, and a first oil storage tank is provided at the bottom of the support seat, a first piston column is slidably connected in the first oil storage tank, and the first piston column is connected to the support seat through a first compression spring.

[0009] By adopting the above technical solution, the first piston column will move upward when it is squeezed, and will automatically bounce open under the action of the first compression spring when it is not squeezed.

[0010] Preferably, a second oil storage tank and a third oil storage tank are provided in the support seat, and the second oil storage tank is connected to the first oil storage tank through a first connecting channel, a first piston rod is slidably connected to the second oil storage tank, the third oil storage tank is connected to the second oil storage tank through a second connecting channel, and a second piston rod is slidably connected to the third oil storage tank, the outer ends of the first piston rod and the outer ends of the second piston rod are fixed with a first oil cylinder, and the first oil cylinder is slidably connected to the first sliding groove.

[0011] By adopting the above technical solution, when the first piston column moves upward, the first piston rod moves left and the second piston rod moves right, which facilitates the adjustment of the distance between the two first oil cylinders.

[0012] Preferably, a first groove is provided at the bottom of the support seat, and a movable block is slidably connected in the first groove, the movable block is connected to the support seat through a second compression spring, and second piston columns are symmetrically fixed on both sides of the upper end surface of the movable block, two fourth oil storage tanks are provided in the support seat, the second piston column is slidably connected in the fourth oil storage tank, and one of the fourth oil storage tanks is connected to one of the first oil cylinders through a first connecting pipe, and the other fourth oil storage tank is connected to the other first oil cylinder through the first connecting pipe.

[0013] By adopting the above technical solution, when the movable block and the second piston column move upward, the two piston plates move upward.

[0014] Preferably, the inner end surface of the piston plate is provided with a second sliding groove, the support plate is slidably connected to the second sliding groove, and the support plate is connected to the piston plate through a third compression spring, a limiting column is fixed in the second sliding groove, the limiting column passes through the support plate, and a movable column is fixed on the top of the support plate, a second groove is provided on the top of the piston plate, and the movable column is slidably connected in the second groove.

[0015] By adopting the above technical solution, the limiting pins can be used to limit and fix the plastic film, and the limiting pins need to be removed during lamination.

[0016] Preferably, a first support bar and a second support bar are fixed to the bottom of the movable plate, and the first support bar passes through the inner sleeve, the inner side of the first support bar is connected to the first electric heating plate through a first electric telescopic rod, and the inner side of the second support bar is connected to the second electric heating plate through a second electric telescopic rod.

[0017] By adopting the above technical solution, the first electric heating plate and the second electric heating plate are attached together and heat the plastic film, so that the joint of the plastic film can be sewn and fixed conveniently.

[0018] Preferably, the cutting mechanism includes a motor, and the motor is fixed inside the movable plate, the bottom of the motor is connected to the gear, the movable plate is rotatably connected to a rotating drum, and a gear ring is fixed on the outside of the rotating drum, and the gear ring is meshed and connected to one side of the gear.

[0019] By adopting the above technical solution, the rotation of the gear can drive the rotating drum to rotate.

[0020] Preferably, a third groove is formed at the bottom of the electric heating cover, and a fifth compression spring is fixed in the third groove, and an extrusion column is fixed at the bottom of the fifth compression spring.

[0021] By adopting the above technical solution, the extrusion column can squeeze the movable column and the supporting plate, and the limiting needle is retracted into the piston plate.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The film packaging equipment can achieve the purpose of adjusting the spacing and height through the mutual cooperation of the double-layer conveyor belt, the support seat, the first piston column, the first piston rod, the second piston rod, the first oil cylinder, the movable block, the second piston column, the piston plate, the first extrusion bar and the second extrusion bar. Before using the device, it is necessary to adjust the height of the first extrusion bar and the second extrusion bar. When the support seat is transported to the right under the operation of the double-layer conveyor belt, the first extrusion bar will squeeze the first piston column, and the second extrusion bar will squeeze the movable block. When the first piston column moves up, the first piston rod and the second piston rod move, and the two first oil cylinders move away from each other, which is convenient for adjusting the spacing between the two piston plates according to the size of the tubular plastic film. When the movable block and the second piston column move up, the piston plate moves up, which is convenient for adjusting the height of the piston plate according to the sheathing height of the plastic film. When the tubular plastic film is put on the material, the piston plate can support the plastic film.

[0024] 2. The film packaging equipment can achieve the purposes of automatic seaming, limiting fixation and automatic cutting through the mutual cooperation of the piston plate, limiting needle, inner sleeve, outer sleeve, first electric heating plate, second electric heating plate, rotating drum, second oil cylinder and cutting knife. When the whole plastic film is bent and inserted between the inner sleeve and the outer sleeve and conveyed downward, the first electric heating plate and the second electric heating plate are close to each other and fit together. The first and second electric heating plates heat and fix the splicing of the tubular plastic film. Then the tubular plastic film moves down and is sleeved on the material. The tubular plastic film is placed on the piston plate. The limiting needle limits and fixes the plastic film to prevent the plastic film from deviating and causing the subsequent lamination to be uneven. After the cutting knife extends from the second oil cylinder, the second oil cylinder rotates together with the rotating drum to facilitate automatic cutting of the plastic film.

[0025] 3. The film packaging equipment can achieve the purpose of releasing the limit and automatically and completely laminating through the mutual use of the support plate, limit pins, movable column, electric heating cover and extrusion column. After the material covered with plastic film is transported to the bottom of the electric heating cover, the electric heating cover moves down and covers the outside of the material. Then the electric heating cover heats the plastic film for laminating. The extrusion column squeezes the movable column, support plate and limit pin to move downward, thereby removing the limit pin. Then the electric heating cover continues to move down, facilitating the completion of the complete laminating operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention;

[0027] Figure 2 It is a bottom-up three-dimensional structural schematic diagram of the present invention;

[0028] Figure 3 It is a schematic diagram of the front cross-sectional structure of the present invention;

[0029] Figure 4 It is a schematic diagram of the three-dimensional structure of the height and spacing adjustment structure of the present invention;

[0030] Figure 5 It is a schematic diagram of the front cross-sectional structure of the height and spacing adjustment structure of the present invention;

[0031] Figure 6 It is a schematic diagram of the left side cross-sectional structure of the height and spacing adjustment structure of the present invention;

[0032] Figure 7 This is a schematic diagram of the connection structure between the movable plate and the cutting mechanism of the present invention;

[0033] Figure 8 For the present invention Figure 3 A in the middle is an enlarged structural diagram;

[0034] Figure 9 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0035] Figure 10 For the present invention Figure 5 Enlarged structural diagram at point C in the middle.

[0036] Figure: 1, base; 2, support plate; 3, double-layer conveyor belt; 4, height and spacing adjustment structure; 401, support base; 402, first slide; 403, first oil storage tank; 404, first compression spring; 405, first piston column; 406, first connecting channel; 407, second oil storage tank; 408, first piston rod; 409, second connecting channel; 410, third oil storage tank; 411, second piston rod; 412, first oil cylinder; 413, first groove 414, second compression spring; 415, movable block; 416, second piston column; 417, fourth oil reservoir; 418, first connecting pipe; 419, piston plate; 420, second slide groove; 421, third compression spring; 422, support plate; 423, limit column; 424, limit pin; 425, movable column; 426, second groove; 5, bracket; 6, fixed plate; 7, first electric telescopic column; 8, second electric telescopic column; 9, first extrusion strip; 10 , second extrusion bar; 11, third electric telescopic column; 12, moving plate; 13, vertical plate; 14, inner sleeve; 15, outer sleeve; 16, first fixing bolt; 17, first support bar; 18, first electric telescopic rod; 19, first electric heating plate; 20, second support bar; 21, second electric telescopic rod; 22, second electric heating plate; 23, cutting mechanism; 2301, motor; 2302, gear; 2303, rotating drum; 2304, gear ring; 2305, support Column; 2306, universal ball; 2307, fourth electric telescopic column; 2308, pressure plate; 2309, first piston block; 2310, fifth oil storage tank; 2311, fourth compression spring; 2312, second connecting pipe; 2313, second oil cylinder; 2314, second piston block; 2315, cutting knife; 24, fifth electric telescopic column; 25, second fixing bolt; 26, electric heating cover; 27, third groove; 28, fifth compression spring; 29, extrusion column. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] See also Figures 1 to 10The present invention provides a technical solution: a film packaging device, including a base 1, support plates 2 are symmetrically fixed on both sides of the upper end surface of the base 1, a double-layer conveyor belt 3 is rotatably connected between the front and rear support plates 2, and a height and spacing adjustment structure 4 is fixed on the outer surface of the double-layer conveyor belt 3. The height and spacing adjustment structure 4 includes a support seat 401, and a first oil cylinder 412 is symmetrically and slidingly connected on both sides of the upper end surface of the support seat 401. A piston plate 419 is slidably connected in the first oil cylinder 412, and a support plate 422 is slidably connected to the inner end surface of the piston plate 419. A limit pin 424 is fixed to the top of the support plate 422, and the limit pin 424 passes through the top of the piston plate 419.

[0039] A bracket 5 is fixed to the upper end surface of the base 1, a fixing plate 6 is fixed to the front side of the bracket 5, a first electric telescopic column 7 and a second electric telescopic column 8 are fixed to the upper end surface of the fixing plate 6, a first extrusion bar 9 is fixed to the top of the first electric telescopic column 7, and a second extrusion bar 10 is fixed to the top of the second electric telescopic column 8.

[0040] The lower side of the top of the bracket 5 is connected to the movable plate 12 through the third electric telescopic column 11. The bottom of the movable plate 12 is fixed with a vertical plate 13. The front side of the vertical plate 13 is fixed with an inner sleeve 14 and an outer sleeve 15 through a first fixing bolt 16. The inner sleeve 14 passes through the outer sleeve 15. A cutting mechanism 23 is provided on the movable plate 12. The cutting mechanism 23 passes through the inner sleeve 14. The bottom of the movable plate 12 is fixed with a fifth electric telescopic column 24. The bottom of the fifth electric telescopic column 24 is fixed with an electric heating cover 26 through a second fixing bolt 25.

[0041] In this embodiment, Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, first sliding grooves 402 are symmetrically provided on both sides of the upper end surface of the support seat 401, and a first oil storage tank 403 is provided at the bottom of the support seat 401. A first piston column 405 is slidably connected in the first oil storage tank 403, and the first piston column 405 is connected to the support seat 401 through a first compression spring 404. Hydraulic oil is stored in the first oil storage tank 403. When the first piston column 405 is squeezed by the first squeezing bar 9 and moves upward, the hydraulic oil in the first oil storage tank 403 can be squeezed out. When the first piston column 405 is not squeezed by the first squeezing bar 9, the first piston column 405 will automatically pop open under the action of the first compression spring 404, and the hydraulic oil can be pumped back into the first oil storage tank 403 at this time.

[0042] In this embodiment, Figure 3 、 Figure 4 、 Figure 5 and Figure 6As shown, a second oil storage tank 407 and a third oil storage tank 410 are provided in the support seat 401, and the second oil storage tank 407 is connected to the first oil storage tank 403 through the first connecting channel 406, a first piston rod 408 is slidably connected in the second oil storage tank 407, the third oil storage tank 410 is connected to the second oil storage tank 407 through the second connecting channel 409, and a second piston rod 411 is slidably connected in the third oil storage tank 410, the outer ends of the first piston rod 408 and the outer ends of the second piston rod 411 are fixed with a first oil cylinder 412, and the first oil cylinder 412 is slidably connected to the first sliding In the groove 402, the first connecting channel 406 serves to connect the second oil storage tank 407 with the first oil storage tank 403, and the second connecting channel 409 serves to connect the third oil storage tank 410 with the second oil storage tank 407. When the first piston column 405 moves upward, the hydraulic oil in the first oil storage tank 403 can be pressed into the second oil storage tank 407, and the first piston rod 408 will move to the left under the action of the oil pressure. When the hydraulic oil is pressed into the third oil storage tank 410, the second piston rod 411 will move to the right under the action of the oil pressure, which is convenient for adjusting the distance between the two first oil cylinders 412 according to the material size.

[0043] In this embodiment, Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, a first groove 413 is provided at the bottom of the support base 401, and a movable block 415 is slidably connected in the first groove 413. The movable block 415 is connected to the support base 401 through a second compression spring 414, and second piston rods 416 are symmetrically fixed on both sides of the upper end surface of the movable block 415. Two fourth oil storage tanks 417 are provided in the support base 401, and the second piston rod 416 is slidably connected in the fourth oil storage tank 417, and one of the fourth oil storage tanks 417 is connected to one of the first oil cylinders 412 through a first connecting pipe 418. In addition, another fourth oil storage tank 417 is connected to another first oil cylinder 412 through a first connecting pipe 418. The first connecting pipe 418 serves to connect the fourth oil storage tank 417 and the first oil cylinder 412. When the movable block 415 is squeezed by the second extrusion bar 10 and moves upward, the second piston column 416 moves upward accordingly. Hydraulic oil is stored in the fourth oil storage tank 417, and the hydraulic oil is pressed into the first oil cylinder 412. The piston plate 419 will move upward under the action of the oil pressure, which makes it convenient to adjust the height of the piston plate 419 according to the coating height.

[0044] In this embodiment, Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 10As shown, the inner end surface of the piston plate 419 is provided with a second slide groove 420, the support plate 422 is slidably connected to the second slide groove 420, and the support plate 422 is connected to the piston plate 419 through a third compression spring 421. A limiting column 423 is fixed in the second slide groove 420, the limiting column 423 passes through the support plate 422, and a movable column 425 is fixed on the top of the support plate 422. A second groove 426 is provided on the top of the piston plate 419, and the movable column 425 is slidably connected to the second groove In 426, the third compression spring 421 and the support plate 422 are used in combination to support the limit pin 424. When the plastic film is put on the material, the plastic film will rest on the piston plate 419, and the limit pin 424 will limit the plastic film to prevent the plastic film from being displaced, thereby ensuring that the subsequent coating effect is more uniform. During the heating coating process, the limit pin 424 is squeezed and moved downward and withdrawn to prevent it from affecting the complete coating operation. The limit column 423 plays a limiting role on the support plate 422.

[0045] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 and Figure 8 As shown, a first support bar 17 and a second support bar 20 are fixed to the bottom of the movable plate 12, and the first support bar 17 passes through the inner sleeve 14, and the inner side of the first support bar 17 is connected to the first electric heating plate 19 through a first electric telescopic rod 18, and the inner side of the second support bar 20 is connected to the second electric heating plate 22 through a second electric telescopic rod 21. When the entire plastic film is bent into a cylindrical shape and inserted between the inner sleeve 14 and the outer sleeve 15 and transported downward, the first electric heating plate 19 can move to the right under the extension of the first electric telescopic rod 18, and the second electric heating plate 22 can move to the left under the extension of the second electric telescopic rod 21. The first electric heating plate 19 and the second electric heating plate 22 are attached together and heat the plastic film, which is convenient for fixing the seams of the cylindrical plastic film.

[0046] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 7 and Figure 8 As shown, the cutting mechanism 23 includes a motor 2301, and the motor 2301 is fixed inside the movable plate 12. The bottom of the motor 2301 is connected to the gear 2302. A rotating drum 2303 is rotatably connected to the movable plate 12, and a ring gear 2304 is fixed to the outside of the rotating drum 2303. The ring gear 2304 is meshed and connected to one side of the gear 2302. The gear 2302 can rotate under the action of the motor 2301. Since the gear 2302 and the ring gear 2304 are meshed and connected together, the rotation of the gear 2302 can drive the rotating drum 2303 to rotate.

[0047] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 and Figure 7 As shown, a support column 2305 runs through the top of the rotating drum 2303, and a universal ball 2306 is movably connected to the top of the supporting column 2305. A fourth electric telescopic column 2307 is fixed to the top of the movable plate 12, and a pressure plate 2308 is fixed to the bottom of the fourth electric telescopic column 2307. The pressure plate 2308 is placed on the supporting column 2305, and a first piston block 2309 is fixed to the bottom of the supporting column 2305. A fifth oil storage tank 2310 is opened at the inner bottom of the rotating drum 2303. The piston block 2309 is slidably connected to the fifth oil storage tank 2310, and the first piston block 2309 is connected to the drum 2303 through the fourth compression spring 2311. A second oil cylinder 2313 is fixed to the bottom of the drum 2303, and the second oil cylinder 2313 is connected to the fifth oil storage tank 2310 through the second connecting pipe 2312. A second piston block 2314 is slidably connected to the second oil cylinder 2313, and a cutting knife 2315 is fixed to one side of the second piston block 2314. The knife 2315 passes through one side of the second oil cylinder 2313, and the second connecting pipe 2312 serves to connect the fifth oil storage tank 2310 with the second oil cylinder 2313. When the support column 2305 rotates with the drum 2303, the universal ball 2306 rolls to reduce the friction between the support column 2305 and the pressure plate 2308. The pressure plate 2308 can move downward under the extension of the fourth electric telescopic column 2307, thereby pressing the support column 2305 downward. The first piston block 2309 moves downward, hydraulic oil is stored in the fifth oil storage tank 2310, the second piston block 2314 can slide under the action of oil pressure, the cutting knife 2315 extends from the second oil cylinder 2313, and the rotation of the rotating drum 2303 can drive the second oil cylinder 2313 to rotate, so as to automatically cut the plastic film. When the pressure plate 2308 moves upward to release the squeeze on the support column 2305, the support column 2305 and the first piston block 2309 can automatically bounce up under the action of the fourth compression spring 2311.

[0048] In this embodiment, Figure 2 、 Figure 3 and Figure 9 As shown, a third groove 27 is provided at the bottom of the electric heating cover 26, and a fifth compression spring 28 is fixed in the third groove 27, and an extrusion column 29 is fixed at the bottom of the fifth compression spring 28. When the plastic film at the limit needle 424 is heated, the limit needle 424 needs to be removed in advance. When the electric heating cover 26 moves downward and covers the outside of the material, the extrusion column 29 moves downward accordingly. The stiffness coefficient of the fifth compression spring 28 is greater than the stiffness coefficient of the third compression spring 421. The extrusion column 29 squeezes the movable column 425, the support plate 422 and the limit needle 424 to move downward, and the limit needle 424 retracts into the piston plate 419. After the limit needle 424 moves down to the bottom, the electric heating cover 26 continues to move downward, the fifth compression spring 28 is compressed, and the extrusion column 29 retracts into the third groove 27.

[0049] The use method and advantages of the present invention: The working process of the film packaging equipment is as follows:

[0050] like Figures 1 to 10 As shown: the electric heating cover 26 and the fifth electric telescopic column 24 are fixed together by the second fixing bolt 25. The electric heating cover 26 is detachable and replaceable. First, adjust the height of the first extrusion strip 9, the second extrusion strip 10 and the movable plate 12, manually bend the entire plastic film into a cylindrical shape and insert it between the inner sleeve 14 and the outer sleeve 15, and then use the external conveying equipment to convey the plastic film. When the joint of the plastic film reaches between the first electric heating plate 19 and the second electric heating plate 22, the first electric heating plate 19 and the second electric heating plate 22 are close to each other and fit together, thereby closing the joint of the plastic film. After heating and fixing, the double-layer conveyor belt 3 drives the support seat 401 to be transported to the right. Hydraulic oil is stored in the first oil storage tank 403. The first piston column 405 is squeezed by the first extrusion bar 9 and moves upward. The first piston rod 408 and the second piston rod 411 move under the action of oil pressure. The two first oil cylinders 412 move away from each other. The distance between the two piston plates 419 can be adjusted. The movable block 415 is squeezed by the second extrusion bar 10 and moves upward. Hydraulic oil is stored in the fourth oil storage tank 417. When the second piston column 416 moves upward, the piston plate 419 The piston plate 419 moves upward, and the height of the piston plate 419 is adjusted. The material is placed between the two piston plates 419. After the material is transported to the bottom of the cylindrical plastic film, the cylindrical plastic film moves downward and is covered on the material. The cylindrical plastic film is finally placed on the piston plate 419. The limit pin 424 limits and fixes the plastic film. The pressure plate 2308 moves downward and squeezes the support column 2305 and the first piston block 2309 downward. Hydraulic oil is stored in the fifth oil storage tank 2310. The second piston block 2314 and the cutting knife 2315 move, and the cutting knife 2315 extends from the second oil cylinder 2313. Afterwards, the gear 2302 rotates to drive the rotating drum 2303 and the second cylinder 2313 to rotate, and the cutting knife 2315 automatically cuts the plastic film. Then the material continues to be transported to the right. After the material reaches the bottom of the electric heating cover 26, the electric heating cover 26 moves down and covers the outside of the material. The electric heating cover 26 heats the plastic film, and the plastic film shrinks and wraps around the material. The extrusion column 29 extends into the second groove 426 and squeezes the movable column 425 to move downward. The limit pin 424 retracts into the piston plate 419, thereby withdrawing the piston plate 419. After that, the electric heating cover 26 continues to move down to facilitate complete film coating.

[0051] In summary, the film packaging equipment achieves the purpose of adjusting spacing and height, automatic seaming, limit fixing, automatic cutting, limit release and automatic and complete film covering, meeting people's usage needs.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

[0053] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the protection content of the present invention.

[0054] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A film packaging device, comprising a base, characterized in that: Support plates are symmetrically fixed on both sides of the upper end surface of the base, a double-layer conveyor belt is rotatably connected between the front and rear support plates, a height and spacing adjustment structure is fixed on the outer surface of the double-layer conveyor belt, the height and spacing adjustment structure includes a support seat, a first oil cylinder is symmetrically slidably connected on both sides of the upper end surface of the support seat, a piston plate is slidably connected in the first oil cylinder, a supporting plate is slidably connected to the inner end surface of the piston plate, a limit pin is fixed on the top of the supporting plate, and the limit pin passes through the top of the piston plate; A bracket is fixed to the upper end surface of the base; a fixing plate is fixed to the front side of the bracket, a first electric telescopic column and a second electric telescopic column are fixed to the upper end surface of the fixing plate, a first extrusion bar is fixed to the top of the first electric telescopic column, and a second extrusion bar is fixed to the top of the second electric telescopic column; The lower side of the top of the bracket is connected to the movable plate through the third electric telescopic column. The bottom of the movable plate is fixed with a vertical plate. The front side of the vertical plate is fixed with an inner sleeve and an outer sleeve through a first fixing bolt. The inner sleeve passes through the outer sleeve. A cutting mechanism is provided on the movable plate. The cutting mechanism passes through the inner sleeve. The bottom of the movable plate is fixed with a fifth electric telescopic column. The bottom of the fifth electric telescopic column is fixed with an electric heating cover through a second fixing bolt. The cutting mechanism includes a motor, which is fixed inside the movable plate, and the bottom of the motor is connected to the gear. A rotating drum is rotatably connected to the movable plate, and a gear ring is fixed to the outside of the rotating drum, and the gear ring is meshed with one side of the gear; a support column is passed through the top of the rotating drum, and a universal ball is movably connected to the top of the support column. A fourth electric telescopic column is fixed on the top of the movable plate, and a pressure plate is fixed on the bottom of the fourth electric telescopic column, and the pressure plate is placed on the support column. A first piston block is fixed on the bottom of the support column, and a fifth oil storage tank is provided at the inner bottom of the rotating drum, and the first piston block is slidably connected in the fifth oil storage tank. The first piston block is connected to the rotating drum through a fourth compression spring, and a second oil cylinder is fixed at the bottom of the rotating drum, and the second oil cylinder is connected to the fifth oil storage tank through a second connecting pipe. A second piston block is slidably connected in the second oil cylinder, and a cutting knife is fixed on one side of the second piston block, and the cutting knife passes through one side of the second oil cylinder.

2. The film packaging equipment according to claim 1, characterized in that: First sliding grooves are symmetrically provided on both sides of the upper end surface of the support seat, a first oil storage tank is provided at the bottom of the support seat, a first piston column is slidably connected in the first oil storage tank, and the first piston column is connected to the support seat through a first compression spring.

3. The film packaging equipment according to claim 1, characterized in that: A second oil storage tank and a third oil storage tank are provided in the support seat. The second oil storage tank is connected to the first oil storage tank through a first connecting channel. The first piston rod is slidably connected in the second oil storage tank. The third oil storage tank is connected to the second oil storage tank through a second connecting channel. The second piston rod is slidably connected in the third oil storage tank. The outer ends of the first piston rod and the outer ends of the second piston rod are fixed with a first oil cylinder, and the first oil cylinder is slidably connected in the first slide groove.

4. The film packaging equipment according to claim 2, characterized in that: A first groove is provided at the bottom of the support seat, and a movable block is slidably connected in the first groove. The movable block is connected to the support seat through a second compression spring, and second piston columns are symmetrically fixed on both sides of the upper end surface of the movable block. Two fourth oil storage tanks are provided in the support seat, and the second piston column is slidably connected in the fourth oil storage tank. One of the fourth oil storage tanks is connected to one of the first oil cylinders through a first connecting pipe, and the other fourth oil storage tank is connected to the other first oil cylinder through the first connecting pipe.

5. The film packaging equipment according to claim 1, characterized in that: A second sliding groove is provided on the inner end surface of the piston plate, and the support plate is slidably connected to the second sliding groove. The support plate is connected to the piston plate through a third compression spring. A limiting column is fixed in the second sliding groove, and the limiting column passes through the support plate. A movable column is fixed on the top of the support plate, and a second groove is provided on the top of the piston plate, and the movable column is slidably connected to the second groove.

6. The film packaging equipment according to claim 1, characterized in that: A first support bar and a second support bar are fixed to the bottom of the movable plate. The first support bar passes through the inner sleeve. The inner side of the first support bar is connected to the first electric heating plate through a first electric telescopic rod. The inner side of the second support bar is connected to the second electric heating plate through a second electric telescopic rod.

7. The film packaging equipment according to claim 1, characterized in that: The cutting mechanism includes a motor, which is fixed inside the moving plate. The bottom of the motor is connected to the gear. A rotating drum is rotatably connected to the moving plate. A gear ring is fixed on the outside of the rotating drum, and the gear ring is meshed with one side of the gear.

8. The film packaging equipment according to claim 1, characterized in that: A third groove is provided at the bottom of the electric heating cover, a fifth compression spring is fixed in the third groove, and an extrusion column is fixed at the bottom of the fifth compression spring.

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