Full-automatic film winding equipment and film winding method thereof

Abstract

The invention discloses full-automatic thin film winding equipment and a thin film winding method thereof. The full-automatic thin film winding equipment comprises a rack, a top thin film winding device and a side face thin film winding device. The top thin film winding device comprises a height and position detection module, a top thin film material roll, a top thin film traction rod, a traction rod driving mechanism and a top film cutting mechanism which are mounted on the rack; the side face film winding device comprises a rotating disc, a rotating disc driving mechanism, a material roll supporting base, a side face film material roll, a lifting driving mechanism, a side face film clamping mechanism, a film clamping lifting mechanism, a side face film cutting mechanism and a film cutting driving mechanism. Compared with traditional manual and semi-automatic film winding equipment, the film winding equipment provided by the invention has higher film winding efficiency, better film winding quality and lower film winding cost.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging, and in particular to a fully automatic film winding device and a film winding method thereof. Background Art

[0002] In industrial production, paper piles, packaging boxes or products need to be wrapped with film on the outer surface before entering or leaving the warehouse to prevent them from getting wet or falling or being damaged during transportation.

[0003] Currently, there are two main methods for laminating products on the market: manual wrapping and laminating, and semi-automatic wrapping equipment. However, manual wrapping is inefficient, labor-intensive, and often results in loose packaging and insecure packaging. Semi-automatic wrapping equipment requires manual intervention before and after wrapping, and its efficiency needs to be further improved, falling short of the printing and packaging industry's goal of digitalization and intelligent development. Summary of the Invention

[0004] In view of the low efficiency problem of the film winding method in the prior art, the object of the present invention is to provide a fully automatic film winding device and a film winding method thereof, so as to at least partially solve the above problem.

[0005] To achieve the above object, the technical solution of the present invention is: In a first aspect, the present invention provides a fully automatic film wrapping device, characterized in that it comprises a frame, a top film wrapping device and a side film wrapping device; The top film winding device includes a top film material roll, a top film traction rod, a traction rod driving mechanism and a top film cutting mechanism installed on the frame; the top film material roll is used to unwind the top film, the top film traction rod is slidably connected to the upper part of the frame in the horizontal direction, and the traction rod driving mechanism is used to drive the top film traction rod to move; the top film traction rod is also equipped with a top film clamping member for clamping the top film; the top film cutting mechanism is used to cut the top film; the frame is also equipped with a height and position detection module for detecting the height and position of the product; The film-cutting mechanism is used to cut the side film, and the side film-cutting mechanism can change the distance between the film-cutting mechanism and the turntable under the drive of the film-cutting mechanism.

[0006] In some preferred embodiments, the side clamping mechanism includes a frame, a clamp and a clamp driving member, the frame is connected to the turntable along a vertical sliding direction, there are no less than two clamps, and the clamp driving member is installed on the frame, the clamp driving member is used to drive the clamps to close or separate from each other, and the clamp driving member is a cylinder-driven rocker mechanism or a slider rocker mechanism.

[0007] In some preferred embodiments, the machine further comprises a composite blowing nozzle fixedly mounted relative to the turntable and / or the frame, wherein the composite blowing nozzle is used to provide airflow in multiple directions to allow the film to adhere to the product.

[0008] In some preferred embodiments, the side film cutting mechanism includes a support column, a support seat, a support plate, a brush, a cutting knife and an air nozzle; the support column is rotatably or slidingly connected to the frame, the support seat is fixed on the support column, the support plate is slidably connected to the support seat in the horizontal direction, the brush, the cutting knife and the air nozzle are all fixedly mounted on the support plate, and a position adjustment mechanism for driving the support plate to move is installed on the support seat.

[0009] In some preferred embodiments, the cutting knife is a serrated knife, a needle or an electric hot knife.

[0010] In some preferred embodiments, there are multiple air nozzles arranged at intervals in the vertical direction, and the blowing angle and blowing pressure of each air nozzle are adjustable.

[0011] In some preferred embodiments, the traction rod driving mechanism includes two chain transmission structures arranged in parallel and relatively spaced apart, and a traction motor fixedly mounted on the frame and connected to at least one of the chain transmission structures, and the top film traction rod is fixedly connected between the two chain transmission structures; the top film cutting mechanism includes a top cutter slidably connected to the frame and a top cutter driving mechanism fixedly mounted on the frame and used to drive the top cutter to move, and the movement direction of the top cutter is perpendicular to the movement direction of the top film traction rod.

[0012] In some preferred embodiments, a moving rod that moves along the product feeding and discharging direction is further included, and the moving rod is used to form a margin between the side film and the product for the side film clamping mechanism to extend into, and the moving rod is also configured with a moving rod driving member.

[0013] In a second aspect, the present invention further provides a film winding method based on a fully automatic film winding device, the method comprising the following steps: The side film clamping mechanism is driven to rise above the top surface of the turntable by the film clamping lifting mechanism, and then the material roll support seat is driven to rise and fall by the lifting drive mechanism so that the side film material roll and the side film clamping mechanism are at approximately the same height; The free end of the side film released from the side film roll is clamped by the side film clamping mechanism; The product enters above the turntable; The height and position detection module detects the height and position of the product; The top film traction rod pulls out the top film, the height drive mechanism drives the frame body to move to the specified height, and the top film cutting mechanism cuts the top film, allowing the top film to fall freely and completely cover the top of the product; The turntable is driven to rotate by the turntable driving mechanism so that the side film is wrapped around the product and the free end of the side film is wrapped tightly; The side film clamping mechanism releases the free end of the side film, and at the same time, the blowing nozzle blows air to the free end of the side film to make the free end of the side film adhere to the side of the product as much as possible. The side film clamping mechanism is driven by the film lifting mechanism to descend to the bottom of the top surface of the turntable; The turntable is driven by the turntable driving mechanism to continue rotating. At the same time, the lifting drive mechanism drives the material roll support seat to rise and fall until the product is fully wrapped by the side film at all heights. Then the turntable stops rotating. The side film clamping mechanism is driven to rise by the film clamping lifting mechanism, while the conveying device drives the product to move. The moving rod moves along the product feeding and discharging direction and pulls the side film, leaving a margin between the side film and the product for the side film clamping mechanism to work, and then the side film is clamped by the side film clamping mechanism; The film cutting drive mechanism drives the side film cutting mechanism close to the product, and the side film cutting mechanism cuts the side film. At the same time, the air nozzle on the side film cutting mechanism blows air to the cut end of the side film, so that the cut end of the side film is as close to the side of the product as possible, completing the side film wrapping of the product; The product is pushed out of the turntable by a conveyor device.

[0014] In some preferred embodiments, the turntable rotates while the material roll support is lifted and lowered by the lifting drive mechanism until the product is fully wrapped with the side film, specifically including: Divide the side of the product into three areas along the height direction: lower, middle and upper; When winding in the lower area, the turntable winds 4-5 circles at 50% of the rated speed; when winding in the middle area, the turntable winds 2-3 circles at 70% of the rated speed; when winding in the lower area, the turntable winds 3-4 circles at 70% of the rated speed.

[0015] The above-described technical solution provides the following beneficial effects: During use, the fully automatic film wrapping equipment provided by the present invention utilizes the top film wrapping device and the side film wrapping device to cover the top of the product. The side film wrapping devices then wrap around the sides of the product while also tightening the top film covering the top of the product. This wrapping method minimizes the amount of wrapping film used while ensuring sufficient wrapping strength and quality. Compared to conventional manual and semi-automatic film wrapping equipment, the film wrapping equipment provided by the present invention offers higher film wrapping efficiency, better wrapping quality, and lower wrapping costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of the present invention.

[0017] Figure 2 It is the front view of the present invention.

[0018] Figure 3 It is a side view of the present invention.

[0019] Figure 4 It is a structural schematic diagram of the side clamping mechanism in the present invention.

[0020] In the figure: 1-frame, 101-base, 102-column, 103-frame body, 2-turntable, 201-wallboard, 3-product, 4-tray, 5-turntable drive mechanism, 51-turntable motor, 52-driving gear, 53-driven gear, 6-material roll support seat, 7-lifting drive mechanism, 8-side film material roll, 9-side film clamping mechanism, 91-frame, 92-clamping claw, 93-clamping claw drive member, 94-connecting rod, 10-film clamping lifting mechanism, 11-side film cutting mechanism, 11 1-support column, 112-support seat, 113-support plate, 114-brush, 115-cutting knife, 116-air nozzle, 117-position adjustment mechanism, 12-air supply device, 13-film cutting drive mechanism, 14-compound blowing nozzle, 15-conveyor device, 16-moving rod, 19-top film traction rod, 20-top film clamping part, 21-top film material roll, 22-traction rod drive mechanism, 23-top film cutting mechanism, 24-height drive mechanism, 25-height and position detection module. DETAILED DESCRIPTION

[0021] The following is a further description of specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is intended to facilitate understanding of the present invention and does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0022] It should be noted that, in the description of the present invention, the terms "up", "down", "left", "right", "front", "back", etc. indicating directions or positional relationships are based on the description of the structure of the present invention shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it cannot be understood as a limitation on the present invention.

[0023] The "first" and "second" in this technical solution are only used to distinguish the same or similar structures, or corresponding structures with similar functions, and are not an arrangement of the importance of these structures, nor do they have any ranking, size comparison, or other meanings.

[0024] In addition, unless otherwise expressly specified or limited, the terms "installed" and "connected" should be understood broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two structures. Those skilled in the art can understand the specific meanings of the above terms in the present invention based on the overall principles of the present invention and the specific context of this solution.

[0025] Example 1 A fully automatic film winding equipment, such as Figure 1-4 As shown, it includes a frame 1, a top film winding device and a side film winding device.

[0026] The rack 1 includes a base 101, columns 102, and a rack body 103. The base 101 is fixed to the ground, for example, by screws or anchor bolts. The columns 102 are arranged vertically and fixed to the base 101. There are usually two columns 102 forming a gantry type. The rack body 103 is slidably connected to the columns 102. For example, both columns 102 are equipped with slide rails, and the rack body 103 is equipped with sliders or slide grooves for use with the slide rails. The rack body 103 is usually a flat frame structure to facilitate the placement of the top film winding device.

[0027] The side film winding device includes a turntable 2, a turntable drive mechanism 5, a material roll support seat 6, a lifting drive mechanism 7, a side film material roll 8, a side film clamping mechanism 9, a film clamping lifting mechanism 10, a side film cutting mechanism 11 and a film cutting drive mechanism 13.

[0028] Turntable 2 is rotatably connected to a support frame fixed to the ground via a shaft and bearings. Alternatively, turntable 2 is rotatably connected to base 101 via a shaft and bearings. The shaft of turntable 2 is arranged vertically (i.e., in height), and the top surface of turntable 2 is horizontal. Turntable 2 is used to carry product 3 to be wrapped with film. Product 3 is typically placed on turntable 2 on a tray 4.

[0029] The turntable drive mechanism 5 is also fixedly mounted on the ground, or fixedly mounted on the base 101. For example, the turntable drive mechanism 5 includes a turntable motor 51, a driving gear 52, and a driven gear 53. The turntable motor 51 is fixedly mounted on the ground via screws or bolts, the driving gear 52 is fixed to the motor shaft of the turntable motor 51, and the driven gear 53 is coaxially fixedly mounted on the turntable 2. Of course, in other embodiments, the turntable drive mechanism 5 can also be a turntable motor 51 that directly drives the shaft fixed to the turntable 2 through a reducer and a coupling. In this case, the turntable drive mechanism 5 is arranged on the lower side of the turntable 2 to prevent it from affecting the arrangement of the products 3 on the turntable 2.

[0030] The roll support 6 is vertically slidably connected to the frame 1. For example, a vertically arranged slide rail is fixed to the base 101, and the roll support 6 is slidably connected to the slide rail. The lifting drive mechanism 7 is fixedly mounted on the base 101. The lifting drive mechanism 7 can be any device capable of outputting linear motion in the vertical direction, such as a pneumatic cylinder, hydraulic cylinder, electric cylinder, or a gear rack transmission structure driven by a motor. The output end of the lifting drive mechanism 7 is fixedly connected to the roll support 6, thereby driving the roll support 6 to move back and forth in the vertical direction.

[0031] The side film roll 8 is used to unwind the side film, which has a hollow cavity. A fixed rod or fixed shaft with a diameter smaller than the hollow cavity is fixed on the roll support seat 6, so that the side film roll 8 can be mounted thereon and can rotate freely.

[0032] The side film clamping mechanism 9 is vertically slidably connected to the turntable 2. The side film clamping mechanism 9 includes a frame 91, a clamping jaw 92, and a clamping jaw drive 93. Typically, the side film clamping mechanism 9 is not directly mounted on the turntable 2. Instead, the wall panel 201 is first fixed to the turntable 2, for example, by screws. The frame 91 is then slidably connected to the wall panel 201 via a slide rail slot or a slide rail slider structure. The film clamping lifting mechanism 10 is fixedly mounted on the wall panel 201. The film clamping lifting mechanism 10 can be any device capable of outputting linear motion in the vertical direction, such as a pneumatic cylinder, a hydraulic cylinder, an electric cylinder, or a gear rack transmission structure driven by a motor. Its output end is connected to the frame 91, thereby driving the frame 91 to move back and forth vertically.

[0033] The two clamping jaws 92 are interlaced at their mid-length locations. The two clamping jaws 91 are rotatably connected to the frame 91 at the intersection via a common pivot axis, with the axis of rotation being horizontal. This allows the upper portions of the two clamping jaws 92 to clamp the side film being unwound from the side film roll 8 when brought together, and to release the side film when separated. The clamping jaw drive 93 is a device capable of outputting linear motion in a vertical direction, such as a pneumatic cylinder, a hydraulic cylinder, an electric cylinder, or a motor-driven rack and pinion transmission structure. It is fixedly mounted on the frame 91, and its output end is connected to two connecting rods 94, which are respectively connected to the lower ends of the two clamping jaws 92. Thus, when the output end of the clamping jaw drive 93 moves upward, it drives the two clamping jaws 93 to release the side film, and when the output end of the clamping jaw drive 93 moves downward, it drives the two clamping jaws 93 to clamp the side film.

[0034] The side film cutting mechanism 11 is movably mounted on the base 101 or can be movably mounted on the ground. The side film cutting mechanism 11 includes a support column 111, a support seat 112, a support plate 113, a brush 114, a cutting blade 115 and an air nozzle 116.

[0035] The support column 111 is arranged vertically. It can be rotatably connected to the base 101 through a bearing, or it can be slidably connected to the base 101 through a slide rail or a slide groove structure, so that the distance between the cutting knife 115 and the product 3 can be changed during sliding, so that the cutting knife 115 can approach the product 3 and cut the side film. Usually, the sliding direction of the support column 111 relative to the base 101 is roughly perpendicular to the pulling-out direction of the side film. The pulling-out direction is the direction in which the side film is pulled toward the product 3 during the winding process. Usually, the pulling-out direction is roughly parallel to the feeding and unloading direction of the product 3. Of course, in other preferred embodiments, the pulling-out direction of the side film can also be roughly perpendicular to the feeding and unloading direction of the product 3. At the same time, in order to prevent the side film cutting mechanism 11 from affecting the feeding and unloading movement of the product 3, a certain angle can be provided between the sliding direction of the support column 111 and the feeding and unloading direction of the product 3.

[0036] The support seat 112 is fixed on the support column 112. The support seat 112 is usually installed in a cantilever shape and has a certain length. The support plate 113 is slidably connected to the support seat 112 in the horizontal direction. For example, more than two guide rods are fixed on the support plate 113, and guide holes that are compatible with the guide rods are opened on the support seat 112. In addition, a position adjustment mechanism 117 for driving the support plate 113 to move is fixedly installed on the support seat 112, such as a cylinder, a hydraulic cylinder, an electric cylinder, or a gear rack transmission structure driven by a motor, and any other device that can output linear motion in the horizontal direction, and its output end is connected to the support plate 113.

[0037] The brush 114, the cutting blade 115, and the air nozzle 116 are all fixedly mounted on the side of the support plate 113 away from the support base 112. The brush 114 and the cutting blade 115 are both long and arranged vertically, with a length approximately equal to the height of the product 3. The cutting blade 115 can be a serrated blade. There are multiple air nozzles 116 and they are arranged at intervals along the vertical direction. The arrangement range is also equal to the height of the product 3. The blowing angle and gas pressure of different air nozzles 116 can be adjusted. For example, the air nozzle 116 can be configured as a universal bamboo air nozzle, and each air nozzle 116 is equipped with a valve for adjusting the blowing flow and pressure. Of course, each air nozzle 116 can also be integrated into a composite blowing nozzle. In this way, when the side film cutting mechanism 11 approaches the product 3, the brush 114 can press the side film on the product 3 and keep the side film from loosening. The cutting blade 115 can cut the side film wrapped around the product 3. The air nozzle 116 can keep the cut side film attached to the product 3 through the air flow it ejects. Typically, the base 101 is also equipped with an air supply device 12, such as a pump, air compressor, or high-pressure gas tank, which is connected to each air nozzle 116 via a pipeline (specifically, a hose). A film cutting drive mechanism 13 is fixedly mounted on the base 101. The side film cutting mechanism 13 is used to drive the side film cutting mechanism 11 to move, so that the side film cutting mechanism 11 can change the distance between itself and the product 3 on the turntable 2, allowing the cutting blade 115 to cut the side film after approaching the product 3. The specific structure of the film cutting drive mechanism 13 is related to the movement of the support column 111 relative to the base 101. For example, when the support column 111 is rotationally connected to the base 101, the film cutting drive mechanism 13 is configured as a motor, the motor shaft of which is connected to the support column 111 via a gear transmission structure. When the support column 111 is slidingly connected to the base 101, the film cutting drive mechanism 13 is configured as any device capable of outputting linear motion in the horizontal direction, such as a pneumatic cylinder, a hydraulic cylinder, an electric cylinder, or a gear rack transmission structure driven by a motor.

[0038] It is easy to understand that the side film may become loose during the winding process. Therefore, in this embodiment, a composite blow nozzle 14 is also installed on the mounting wall panel 201. The composite blow nozzle 14 is used to provide airflow to the product 3 so that the free end of the side film can be attached to the side wall of the product 3 during the winding process. At this time, the axis to which the turntable 2 belongs can be configured to be hollow, and a rotary joint for supplying air to the composite blow nozzle 14 can be arranged based on the hollow hole of the axis. The rotary joint is connected to the above-mentioned air supply device 12 through a pipeline. At this time, the composite blow nozzle 14 rotates together with the turntable 2, so the composite blow nozzle 14 can always blow toward the free end of the side film. In this case, the pressure requirement for the airflow is not high, and the blowing efficiency is high, the air path control is simple, the cost is low, and the noise is low. Of course, in other preferred embodiments, the compound blow nozzle 14 can also be fixedly installed on the frame 1, and the compound blow nozzle 14 is connected to the above-mentioned air supply device 12 through a pipeline. At this time, the compound blow nozzle 14 does not rotate with the turntable 2. At this time, there is more than one compound blow nozzle 14 and they are arranged circumferentially around the turntable 2. In this way, during the rotation of the turntable 2, the free end of the side film can be blown by each compound blow nozzle 14 at some specific positions, so that the free end of the side film can be attached to the side wall of the product 3. In this case, the compound blow nozzle 14 is far away from the product, and precise blowing is required, which has high requirements on airflow pressure, high cost, and high noise.

[0039] In this embodiment, the top film winding device includes a top film traction rod 19 installed on the frame 1, a top film clamping member 20, a top film material roll 21, a traction rod driving mechanism 22, a top film cutting mechanism 23, a height driving mechanism 24 and a height and position detection module 25.

[0040] The top film traction rod 19 is specifically arranged on the frame body 103, and is slidably connected through a slide rail slider or a slider slot structure. The top film traction rod 19 slides in the horizontal plane, and the sliding direction of the top film traction rod 19 is roughly perpendicular to the feeding and discharging direction of the product 3, and the length direction of the top film traction rod 19 itself is roughly parallel to the feeding and discharging direction of the product 3.

[0041] The top film clamping member 20 is fixedly mounted on the top film pulling rod 19. The top film clamping member 20 is used to clamp a section of the top film covering the top of the product 3. For example, the top film clamping member 20 is a pneumatic clamp or an electric clamp. Usually, there are more than two top film clamping members 20 and they are installed at intervals along the length direction of the top film pulling rod 19.

[0042] The top film roll 21 is used to unwind the top film covering the top of the product 3. A horizontally arranged crossbar is fixed on the frame 1, and the crossbar is parallel to the feeding and discharging direction of the product 3. The structure of the top film roll 21 is the same as that of the side film roll 8. The top film roll 21 is mounted on the crossbar, so that the top film roll 21 can rotate freely while being mounted on the crossbar, and the top film can be released when rotating. It is easy to understand that when the crossbar and the top film drawing rod 19 are not at the same height (for example, the crossbar is fixed on the column 102), a roller is correspondingly installed on the frame 1 to guide the top film to turn, so that the top film released by the top film roll 21 can be pulled to the top film drawing rod 19 and then clamped by the top film clamping member 20. Of course, the top film clamping member 20 can also release the top film clamped by it.

[0043] The traction rod driving mechanism 22 is fixedly mounted on the frame body 103, and is used to drive the top film traction rod 19 to slide on the frame body 103. When the top film clamping member 20 clamps the top film, the top film traction rod 19 is driven to slide on the frame body 103 by the traction rod driving mechanism 22, so that the top film can be pulled out and unfolded above the product 3.

[0044] In this embodiment, the traction rod drive mechanism 22 includes two chain drive structures, which are parallel to each other and arranged at intervals along the feeding and discharging direction of the product 3. Each chain drive structure includes two sprockets and a chain wound between the two sprockets, wherein the sprockets are rotatably connected to the frame body 103, and the length direction of the chain is parallel to the sliding direction of the top film traction rod 19, and the two ends of the top film traction rod 19 are respectively fixedly connected to the chains in the two chain drive structures. The traction rod drive mechanism 22 also includes a traction motor, which is fixed to the frame body 103. The traction motor is connected to the shaft of the sprocket in one of the chain drive structures, and the shaft is also connected to the corresponding sprocket in the other chain drive structure. In this way, when the traction motor is in operation, it can simultaneously drive the two chain drive structures to rotate synchronously in the same direction, thereby driving the top film traction rod 19 to slide back and forth on the frame body 103.

[0045] Of course, in other preferred embodiments, the traction rod drive mechanism 22 can also be any device that can output linear motion in the horizontal direction, such as a cylinder, a hydraulic cylinder, an electric cylinder, or a gear rack transmission structure driven by a motor, and its output end is fixedly connected to the top film traction rod 19.

[0046] The top film cutting mechanism 23 is installed on the frame body 103 and is located on the path of the top film. When the top film clamping member 20 on the top film pulling rod 19 clamps the top film and moves in the direction away from the top film roll 21 until the top of the product 3 is completely covered by the top film, the top film cutting mechanism 23 on the frame body 103 can cut the top film from the root. The "root" refers to the side of the frame body 103 close to the top film roll 21, so that the cut top film has a size that can cover the product 3.

[0047] In this embodiment, the top film cutting mechanism 23 includes a top cutter 231 slidably connected to the frame body 103 and a top cutter driving mechanism 232 fixedly mounted on the frame body 103 and used to drive the top cutter 231 to move. The movement direction of the top cutter 231 is perpendicular to the movement direction of the top film traction rod 19, and the top cutter driving mechanism 232 can be any device that can output linear motion in the horizontal direction, such as a cylinder, a hydraulic cylinder, an electric cylinder, or a gear rack transmission structure driven by a motor. In this way, when the top cutter 231 moves, the top film can be cut. At the same time as the top film is cut, the top film clamping member 20 also releases the top film, and then the cut top film falls and covers the top of the product 3, realizing the top wrapping operation of the product 3.

[0048] It is easy to understand that if the frame body 103 is too high from the top of the product 3, the top film may deviate due to the large falling distance, making it difficult to completely cover the top of the product 3.

[0049] Therefore, in this embodiment, the frame body 103 is configured to be vertically slidably connected to the column 102. A height drive mechanism 24 is fixedly mounted on the base 101 or the column 102. The height drive mechanism 24 can be any device capable of outputting vertical linear motion, such as a pneumatic cylinder, a hydraulic cylinder, an electric cylinder, or a gear rack transmission structure driven by a motor, with its output end fixed to the frame body 103.

[0050] At the same time, a height and position detection module 25 for detecting the height and position of the product 3 is also fixed on the rack 1 (for example, on the rack body 103 ).

[0051] It is easy to understand that when the product 3 is fully wrapped by the side film and the turntable 2 stops rotating, the gap between the side film and the product 3 may not be enough for the clamping claws 92 of the side film clamping mechanism 9 to extend into. Therefore, the turntable 2 can be rotated slightly in the opposite direction to allow the side film to slacken and provide a gap, so that the clamping claws 92 of the side film clamping mechanism 9 can extend into the gap between the side film and the product 3. Figure 1As shown, the turntable 2 is also equipped with a conveying device 15 for conveying products, such as a roller conveyor, for carrying products. The roller conveyor can be used for loading and unloading of products 3. In addition, when the product 3 is fully wrapped with the side film and the turntable 2 stops rotating, the conveying device 15 can also drive the product 3 to move, thereby loosening the side film and creating a margin between the side film and the product 3, so that the clamping claws 92 of the side film clamping mechanism 9 can extend into it.

[0052] Or as Figure 2 As shown, the apparatus further includes a moving rod 16, which is slidably connected to a slide rail disposed on the ground (or base 101). The moving rod 16 moves in a direction parallel to the product feeding and discharging direction. Furthermore, a moving rod driving member is fixed to the ground (or base 101) for driving the moving rod 16. Such a device can be, for example, a pneumatic cylinder, a hydraulic cylinder, an electric cylinder, or a motor-driven rack and pinion transmission structure, or any other device capable of outputting linear motion in a horizontal direction. Thus, when the product side film is wrapped, the moving rod 16 applies a pushing force to the side film connected between the side film roll 8 and the product 3, thereby loosening the side film and creating a gap between the side film and the product 3 for the clamping jaws 92 of the side film clamping mechanism 9 to extend.

[0053] The film winding process of a film winding device provided by an embodiment of the present invention is as follows: When the product 3 needs to be wrapped with film, the film clamping mechanism 9 is first raised to the top surface of the turntable 2 by the film clamping lifting mechanism 10, and then the roll support 6 is raised and lowered by the lifting drive mechanism 7, so that the side film roll 8 and the side film clamping mechanism 9 are at approximately the same height; The free end of the side film released from the side film roll 8 is clamped by the side film clamping mechanism 9; Place product 3 onto turntable 2; The height and position detection module 25 detects the height and position of the product 3; The height driving mechanism 24 drives the frame body 103 to move up and down so that the distance between the frame body 103 and the top of the product 3 is within the required range; When the device is used for the first time, the top film unwound from the top film roll 21 is manually pulled out and pulled to the top film drawing rod 19. Then, the top film clamping member 20 clamps the free end of the top film. The drawing rod driving mechanism 22 drives the top film drawing rod 19 to move away from the top film roll 21 until the top film completely covers the top space of the product 3. The top film cutting mechanism 23 cuts the root of the top film, and then the top film clamping member 20 releases the free end of the top film, and the cut top film falls and covers the top of the product 3, completing the top wrapping operation of the product 3. It is easy to understand that before the top film clamping member 20 releases the free end of the top film, the traction rod driving mechanism 22 and the top film traction rod 19 can also drive the cut top film to move, so that the top of the product 3 can be better covered, completing the top film covering of the product 3.

[0054] The turntable 2 is driven to rotate by the turntable driving mechanism 5 so that the side film is wrapped around the product 3 and the free end of the side film is wrapped tightly; The side film clamping mechanism 9 releases the free end of the side film and is driven by the film clamping lifting mechanism 10 to descend below the top surface of the turntable 2. After the side film clamping mechanism 9 releases the free end of the side film, air is blown toward the free end of the side film through the blowing nozzle 14 to keep it attached to the side of the product 3. The turntable 2 is driven to continue rotating by the turntable driving mechanism 5. At the same time as the turntable 2 rotates, the material roll support 6 is driven to rise and fall by the lifting driving mechanism 7 until the product 3 is fully wrapped by the side film. Then the rotation of the turntable 2 is stopped. At the same time, the top film covering the top of the product 3 can also be wrapped tightly by the side film. The side film clamping mechanism 9 is raised to the top surface of the turntable 2 by the film clamping lifting mechanism 10. The conveying device 15 on the turntable 2 drives the product 3 to move. The moving rod 16 moves along the feeding and discharging direction of the product 3, thereby pulling the side film, leaving a margin between the side film and the product 3 for the side film clamping mechanism 9 to work, and then the side film is clamped by the side film clamping mechanism 9; The film cutting drive mechanism 13 drives the side film cutting mechanism 11 close to the product 3, and the side film cutting mechanism 11 cuts the side film to complete the side film winding of the product 3, and then the side film clamping mechanism 9 and the side film cutting mechanism 11 are reset.

[0055] Usually when cutting the side film, the position where the side film is clamped by the side film clamping mechanism 9 is closer to the side film roll 8 than the position where the side film cutting mechanism 11 cuts the side film. In this way, after the side film is cut, the side film clamping mechanism 9 can still clamp the free end of the side film, which is convenient for the winding of the side film of subsequent products.

[0056] It is easy to understand that when wrapping the side film, the product 3 is divided into three areas: lower, middle and upper in the height direction. During the vertical movement of the material roll support seat 6, the lower area of ​​the product 3 is wrapped 4-5 times at a rated speed of 50%, the middle area is wrapped 2-3 times at a rated speed of 70%, and the upper area is wrapped 3-4 times at a rated speed of 70%. In this way, while maintaining the stability of the side film wrapping of the product 3, it can also save the amount of side wrapping film and improve production efficiency.

[0057] Example 2 A film winding method based on a fully automatic film winding device, the method being applied to the fully automatic film winding device provided in Examples 1 and 2, the method comprising the following steps: When the product 3 needs to be wrapped with film, the film clamping mechanism 9 is first raised to the top surface of the turntable 2 by the film clamping lifting mechanism 10, and then the roll support 6 is raised and lowered by the lifting drive mechanism 7, so that the side film roll 8 and the side film clamping mechanism 9 are at approximately the same height; The free end of the side film released from the side film roll 8 is clamped by the side film clamping mechanism 9; Place product 3 onto turntable 2; The height and position detection module 25 detects the height and position of the product 3; The height driving mechanism 24 drives the frame body 103 to move up and down so that the distance between the frame body 103 and the top of the product 3 is within the required range; When the device is used for the first time, the top film unwound from the top film roll 21 is manually pulled out and pulled to the top film drawing rod 19. Then, the top film clamping member 20 clamps the free end of the top film. The drawing rod driving mechanism 22 drives the top film drawing rod 19 to move away from the top film roll 21 until the top film completely covers the top space of the product 3. The top film cutting mechanism 23 cuts the root of the top film, and then the top film clamping member 20 releases the free end of the top film, and the cut top film falls and covers the top of the product 3, completing the top wrapping operation of the product 3. It is easy to understand that before the top film clamping member 20 releases the free end of the top film, the traction rod driving mechanism 22 and the top film traction rod 19 can also drive the cut top film to move, so that the top of the product 3 can be better covered, completing the top film covering of the product 3.

[0058] The turntable 2 is driven to rotate by the turntable driving mechanism 5 so that the side film is wrapped around the product 3 and the free end of the side film is wrapped tightly; The side film clamping mechanism 9 releases the free end of the side film and is driven by the film clamping lifting mechanism 10 to descend below the top surface of the turntable 2. After the side film clamping mechanism 9 releases the free end of the side film, air is blown toward the free end of the side film through the blowing nozzle 14 to keep it attached to the side of the product 3. The turntable 2 is driven to continue rotating by the turntable driving mechanism 5. At the same time as the turntable 2 rotates, the material roll support 6 is driven to rise and fall by the lifting driving mechanism 7 until the product 3 is fully wrapped by the side film. Then the rotation of the turntable 2 is stopped. At the same time, the top film covering the top of the product 3 can also be wrapped tightly by the side film. The product 3 placed on the tray 4 is moved by the conveying device 15, so that the side film is relaxed, and a margin is formed between the side film and the product 3 for the side film clamping mechanism 9 to extend into. The side film clamping mechanism 9 is driven to rise above the top surface of the turntable 2 by the film clamping lifting mechanism 10, and then the side film is clamped by the side film clamping mechanism 9; The film cutting drive mechanism 13 drives the side film cutting mechanism 11 close to the product 3, and the side film cutting mechanism 11 cuts the side film to complete the side film winding of the product 3, and then the side film clamping mechanism 9 and the side film cutting mechanism 11 are reset.

[0059] It is easy to understand that after the turntable 2 stops rotating and before the side film clamping mechanism 9 clamps the side film, the method further includes: driving the turntable 2 in the opposite direction via the turntable drive mechanism 5 to loosen the side film, thereby creating a gap between the side film and the product 3 for the side film clamping mechanism 9 to perform the clamping operation. Alternatively, the side film can be loosened by applying a pushing force to the side film connected between the side film roll 8 and the product 3 via the movable rod 16, thereby creating a gap between the side film and the product 3 for the clamping jaws 92 of the side film clamping mechanism 9 to extend.

[0060] It is easy to understand that after the film cutting drive mechanism 13 drives the side film cutting mechanism 11 to approach the product 3, the method further includes: The product 3 is moved by the conveying device 15 so that the side film on the product 3 contacts and is pressed against the cutting blade 115, thereby cutting off the side film. This enables the loose side film to be tightened again for cutting.

[0061] When wrapping the side film, the product 3 is divided into three areas in the height direction: the lower, middle and upper areas. During the vertical movement of the material roll support seat 6, the lower area of ​​the product 3 is wrapped 4-5 times at a rated speed of 50%, the middle area is wrapped 2-3 times at a rated speed of 70%, and the upper area is wrapped 3-4 times at a rated speed of 70%. In this way, while maintaining the stability of the side film wrapping of the product 3, it can also save the amount of side wrapping film and improve production efficiency.

[0062] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A fully automatic film wrapping device, characterized by: It includes a frame, a top film winding device and a side film winding device; The top film winding device comprises a top film roll mounted on the frame, a top film traction rod, a traction rod driving mechanism and a top film cutting mechanism; The top film roll is used to unwind the top film, the top film traction rod is slidably connected to the upper part of the frame in the horizontal direction, and the traction rod driving mechanism is used to drive the top film traction rod to move; the top film traction rod is also equipped with a top film clamping member for clamping the top film; the top film cutting mechanism is used to cut the top film; the frame is also equipped with a height and position detection module for detecting the height and position of the product; The film-cutting mechanism is used to cut the side film, and the side film-cutting mechanism can change the distance between the film-cutting mechanism and the turntable under the drive of the film-cutting mechanism.

2. The fully automatic film wrapping equipment according to claim 1, characterized in that: The side clamping mechanism includes a frame, a clamp and a clamp driving member. The frame is connected to the turntable along a vertical sliding manner. There are no less than two clamps. The clamp driving member is installed on the frame. The clamp driving member is used to drive the clamps to close or separate from each other. The clamp driving member is a cylinder-driven rocker mechanism or a slider rocker mechanism.

3. The film wrapping device according to claim 1, characterized in that: It also includes a composite blowing nozzle fixedly installed relative to the turntable and / or the frame, and the composite blowing nozzle is used to provide airflow in multiple directions to make the film adhere to the product.

4. The fully automatic film wrapping equipment according to claim 1, characterized in that: The side film cutting mechanism includes a support column, a support seat, a support plate, a brush, a cutting knife and an air nozzle; the support column is rotatably or slidably connected to the frame, the support seat is fixed on the support column, the support plate is slidably connected to the support seat in the horizontal direction, the brush, the cutting knife and the air nozzle are all fixedly mounted on the support plate, and a position adjustment mechanism for driving the support plate to move is installed on the support seat.

5. The fully automatic film wrapping equipment according to claim 4, characterized in that: The cutting knife is a serrated knife, a needle or an electric heating knife.

6. The fully automatic film wrapping equipment according to claim 4, characterized in that: There are multiple air nozzles arranged at intervals along the vertical direction, and the blowing angle and blowing pressure of each air nozzle are adjustable.

7. The fully automatic film wrapping equipment according to claim 1, characterized in that: The traction rod driving mechanism includes two chain transmission structures arranged in parallel and relatively spaced apart, and a traction motor fixedly mounted on the frame and connected to at least one of the chain transmission structures, and the top film traction rod is fixedly connected between the two chain transmission structures; the top film cutting mechanism includes a top cutter slidably connected to the frame and a top cutter driving mechanism fixedly mounted on the frame and used to drive the top cutter to move, and the movement direction of the top cutter is perpendicular to the movement direction of the top film traction rod.

8. The fully automatic film wrapping equipment according to claim 1, characterized in that: It also includes a moving rod that moves along the product feeding and discharging direction. The moving rod is used to form a margin between the side film and the product for the side film clamping mechanism to extend into, and the moving rod is also configured with a moving rod driving member.

9. A film winding method based on the fully automatic film winding equipment according to any one of claims 1 to 8, characterized in that: The method comprises the following steps: The side film clamping mechanism is driven to rise above the top surface of the turntable by the film clamping lifting mechanism, and then the material roll support seat is driven to rise and fall by the lifting drive mechanism so that the side film material roll and the side film clamping mechanism are at approximately the same height; The free end of the side film released from the side film roll is clamped by the side film clamping mechanism; The product enters above the turntable; The height and position detection module detects the height and position of the product; The top film traction rod pulls out the top film, the height drive mechanism drives the frame body to move to the specified height, and the top film cutting mechanism cuts the top film, allowing the top film to fall freely and completely cover the top of the product; The turntable is driven to rotate by the turntable driving mechanism so that the side film is wrapped around the product and the free end of the side film is wrapped tightly; The side film clamping mechanism releases the free end of the side film, and at the same time, the blowing nozzle blows air to the free end of the side film to make the free end of the side film adhere to the side of the product as much as possible. The side film clamping mechanism is driven by the film lifting mechanism to descend to the bottom of the top surface of the turntable; The turntable is driven by the turntable driving mechanism to continue rotating. At the same time, the lifting drive mechanism drives the material roll support seat to rise and fall until the product is fully wrapped by the side film at all heights. Then the turntable stops rotating. The side film clamping mechanism is driven to rise by the film clamping lifting mechanism, while the conveying device drives the product to move. The moving rod moves along the direction of product movement and pulls the side film, leaving a margin between the side film and the product for the side film clamping mechanism to work, and then the side film is clamped by the side film clamping mechanism; The film cutting drive mechanism drives the side film cutting mechanism close to the product, and the side film cutting mechanism cuts the side film. At the same time, the air nozzle on the side film cutting mechanism blows air to the cut end of the side film, so that the cut end of the side film is as close to the side of the product as possible, completing the side film wrapping of the product; The product is pushed out of the turntable by a conveyor device.

10. The film winding method according to claim 9, characterized in that: As the turntable rotates, the material roll support seat is driven to rise and fall by the lifting drive mechanism until the product is fully wrapped by the side film. Specifically, the process includes: Divide the side of the product into three areas along the height direction: lower, middle and upper; When winding in the lower area, the turntable winds 4-5 circles at 50% of the rated speed; when winding in the middle area, the turntable winds 2-3 circles at 70% of the rated speed; when winding in the lower area, the turntable winds 3-4 circles at 70% of the rated speed.

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