A cold stretch film applicator

Abstract

This invention relates to the field of packaging equipment technology, specifically a cold stretch film wrapping machine, including a lifting drive device. A film feeding device is located at the top of the lifting drive device, and a film supporting mechanism is located below the film feeding device. The film supporting mechanism can slide up and down along the axial direction of the lifting drive device under its traction. An intelligent control box is located on the side of the lifting drive device, and a flexible grooved guide rail connects the film supporting mechanism and the intelligent control box. In use, a film supporting guide is inserted into the film supporting drive device, and the film supporting drive device drives the film supporting guide to move along the guide rail. Simultaneously, a film supporting element is located at the end of the film supporting guide. The film supporting guide drives the film supporting element to stretch and loosen the packaging film. When replacing the film supporting guide, simply disassemble the film supporting element and then drive the film supporting guide away from the traction support device.

Description

Technical Field

[0001] This invention relates to the field of packaging equipment technology, specifically a cold stretch film forming machine. Background Technology

[0002] A cold stretch wrapping machine, also known as a cold shrink packaging machine, is a type of equipment suitable for reverse transport packaging and warehouse packaging of goods stacked on pallets. It primarily uses a stretching device to open the packaging film, and then a lifting device drives the stretching device to fall, allowing the opened packaging film to be wrapped over the packaged goods, thus completing the wrapping operation. Throughout the entire process, the packaging film can be packaged without heating it.

[0003] Chinese Patent Publication No. CN112960448B discloses an invention patent entitled "A Film Rolling and Stretching Device for a Cold Stretch Film Machine," which includes a mounting plate, a film rolling mechanism, and a stretching mechanism. The film rolling mechanism and the stretching mechanism are respectively mounted on the mounting plate, with the stretching mechanism located at the front end of the mounting plate. The film rolling mechanism includes a main beam, a movable seat, a cylinder, a motor, and a film rolling pressure roller. The main beam is located on the top of the mounting plate, and a guide rail is provided on the top of the main beam. The movable seat is slidably mounted on the guide rail. The cylinder is located at the end of the main beam away from the stretching mechanism, and the actuating end of the cylinder is connected to the movable seat. The motor is fixed on the movable seat.

[0004] The aforementioned existing technology mainly uses a cylinder to drive a curved panel to move and expand the packaging film. The movement distance of the curved panel is limited by the stroke of the cylinder. For example, when the size of the object to be packaged is large, a cylinder with a short stroke cannot achieve a large expansion range. In this case, either the equipment needs to be changed for packaging, or the corresponding cylinder needs to be replaced. However, the cylinder is generally fixedly connected to the mounting plate. Replacing the cylinder requires disassembling the cylinder's fixing parts, as well as disassembling the air guide pipe and the curved panel. The position of the cylinder also needs to be calibrated during the cylinder installation process, which is relatively troublesome and results in relatively weak versatility. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a cold stretching film forming machine to solve the problem of relatively weak versatility mentioned in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cold stretch film forming machine, comprising a lifting drive device, a film feeding device at the top of the lifting drive device, a film supporting mechanism below the film feeding device, the film supporting mechanism being able to slide up and down along the axial direction of the lifting drive device under the traction of the lifting drive device, an intelligent control box on the side of the lifting drive device, and a flexible groove guide rail connecting the film supporting mechanism and the intelligent control box. The membrane support mechanism includes a traction support member, which is rectangular. The outer surface of the traction support member is provided with multiple guide rails. A membrane support drive member is provided at one end of the guide rails away from the traction support member. A separable membrane support guide member is provided at the output end of the membrane support drive member. The membrane support guide member slides along the guide rails under the drive of the membrane support drive member. A membrane support member is provided at the end of the membrane support guide member. The membrane support member moves with the drive of the membrane support guide member.

[0007] Preferably, the traction support includes a support frame, the support frame is rectangular, the support frame has a wiring groove inside, and the outer surface of the support frame has a wire inlet communicating with the wiring groove. The wire inlet is connected to the end of the flexible wire groove guide rail. The support frame is provided with guide feet at each of its four corners, and the guide feet are connected to the drive device installed in the lifting drive device; The wiring trough is equipped with integrated cables. One end of the integrated cable is connected to the membrane support drive component, and the other end of the integrated cable extends into the interior of the intelligent control box through a flexible cable trough guide rail.

[0008] Preferably, the guide rail includes a U-shaped guide bar, the top of which has a limiting groove extending through both ends of the U-shaped guide bar, and the bottom of the limiting groove has a branching groove, which is connected to the wiring groove, and the integrated cable is connected to the membrane support drive component through the branching groove.

[0009] Preferably, the membrane support drive includes a protective housing, which is fixed to the end of the U-shaped guide away from the traction support. A guide rod through hole is provided at the connection between the protective housing and the U-shaped guide. A drive motor is provided inside the protective housing, and a drive worm is provided at the output end of the drive motor. A drive worm wheel is meshed with the side of the drive worm. The drive worm wheel extends into the interior of the guide rod through hole and meshes with the outer surface of the membrane support guide.

[0010] Preferably, the membrane support guide includes a traction guide rod, which passes through a guide rod through hole, and the outer surface of the traction guide rod is provided with a plurality of driven grooves at equal intervals, the driven grooves meshing with a drive worm gear; The end of the traction guide rod is provided with a threaded joint, and the membrane support is connected to the traction guide rod through the threaded joint. The end of the traction guide rod away from the membrane support is provided with a limiting baffle.

[0011] Preferably, the outer surface of the drive worm gear is provided with an arc-shaped groove, and the inner diameter of the arc-shaped groove is adapted to the diameter of the guide rod.

[0012] Preferably, the membrane support includes an L-shaped slider, and one end of the L-shaped slider near the guide rod is provided with an internal threaded joint. The L-shaped slider is connected to the guide rod through the internal threaded joint and the threaded joint.

[0013] Preferably, the guide rod is a hollow tube, and the threaded joints are located at both ends of the guide rod; The L-shaped slider has an airflow guiding channel inside, which is connected to an internal threaded connector, and the other end of the L-shaped slider has an air outlet. The integrated cable includes a ducted air hose, the outer surface of which is provided with several limiting grooves, and each limiting groove is provided with a transmission line inside, the outer surface of which is covered with a protective sleeve. The bottom of the U-shaped guide bar is provided with an air outlet connector, and the air guide hose is connected to the air outlet connector from the inside of the branch groove; A corrugated air guide tube is provided between the air outlet pipe connector and the threaded connector near the limit baffle.

[0014] Preferably, the integrated cable is provided with a repeater connector at the connection between the wiring trough and the branch trough. The repeater connector includes a three-way box. Each opening of the three-way box is provided with a terminal block. Each terminal block is electrically connected to each other and electrically connected to the transmission line. The junction box is equipped with a relay air duct inside. The relay air duct is a three-way pipe, and the three ports of the relay air duct extend to the opening of each port of the three-way box. The end of the relay air duct is connected to the air duct hose.

[0015] Preferably, the contact surface between the L-shaped slider and the outer packaging film is provided with multiple anti-slip blocks, the anti-slip blocks extending into the interior of the airflow guiding channel, and the anti-slip blocks can extend outward from the airflow guiding channel; The anti-slip block has a hinge groove that runs vertically through it, and an anti-slip block drive is hinged inside the corner of the airflow guiding channel. One end of the anti-slip block drive is hinged to the inside of the hinge groove. The anti-slip block drive component includes a curved connecting rod, which is an L-shaped rod. A pivot connecting seat is provided at the corner of the curved connecting rod, and the curved connecting rod is hinged to the inside of the airflow guiding channel through the pivot connecting seat. The upper side of the curved connecting rod is provided with a slanted insert rod, and both the upper end of the curved connecting rod and the end of the slanted insert rod are provided with anti-slip block hinge shafts and hinge grooves for hinge connection. The lower end of the hinge groove is provided with a piston connecting shaft, and a driving piston is hinged to the piston connecting shaft. The driving piston is adapted to the inner diameter of the airflow guiding channel.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. The cold stretching and wrapping machine of the present invention, by setting a film-supporting guide inserted into a film-supporting drive, and driving the film-supporting guide through the film-supporting drive, causes the film-supporting guide to move along the guiding direction of the guide rail. At the same time, a film-supporting component is set at the end of the film-supporting guide. The film-supporting guide drives the film-supporting component to stretch and loosen the packaging film. When replacing the film-supporting guide, it is only necessary to first remove the film-supporting component and then drive the film-supporting guide away from the traction support through the film-supporting drive, thereby improving the versatility of the equipment.

[0017] 2. The cold stretching and wrapping machine of the present invention, by setting the guide rod to be hollow and setting an airflow guide channel inside the L-shaped slider, and at the same time setting an air outlet at the end of the L-shaped slider, while stretching the packaging film, gas is introduced into the interior of the packaging film through the air outlet, so that the packaging film is stretched under the action of gas, thereby avoiding the inner wall of the packaging film from contacting the sharp edge of the product and damaging the packaging film during the wrapping process, thus achieving the effect of protecting the packaging film.

[0018] 3. The cold stretching and wrapping machine of the present invention provides anti-slip blocks at the contact points between the L-shaped slider and the packaging film. The anti-slip blocks increase the friction between the L-shaped slider and the packaging film, thereby preventing the packaging film from detaching from the L-shaped slider due to gas pressure during the gas delivery process, thus improving the stability of the wrapping.

[0019] 4. The cold stretching and wrapping machine of the present invention drives the anti-sliding block to move horizontally in the airflow guiding channel by setting an anti-sliding block drive component inside the airflow guiding channel. During the wrapping process, the gas pressure drives the curved connecting rod to rotate through the drive piston, so that the anti-sliding block comes into contact with the inner wall of the packaging film and increases friction. When the wrapping is completed and the L-shaped slider needs to be separated from the packaging film, the anti-sliding block drive component loses the gas pressure and drives the anti-sliding block back to the initial position, so that the outer surface of the anti-sliding block is flush with the outer surface of the L-shaped slider, thereby improving the convenience of separation and avoiding the anti-sliding block from tearing the packaging film. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the membrane support mechanism of the present invention.

[0022] Figure 3 For the present invention Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0023] Figure 4 This is a cross-sectional view of the traction support and guide rail of the present invention.

[0024] Figure 5 This is a schematic diagram of the structure of the integrated cable of the present invention.

[0025] Figure 6 This is a cross-sectional view of the relay connector in this invention.

[0026] Figure 7 This is a cross-sectional view of the structure of the membrane-supporting drive component of the present invention.

[0027] Figure 8 This is a schematic diagram of the structure of the worm gear driving the present invention.

[0028] Figure 9 This is a schematic diagram showing the connection between the membrane guide and the membrane support member of the present invention.

[0029] Figure 10 This is a schematic diagram of the assembly of the membrane guide and the membrane support component of the present invention.

[0030] Figure 11 This is a cross-sectional view of the membrane support component of the present invention.

[0031] Figure 12 This is a schematic diagram showing the connection between the anti-slip block and the anti-slip block driver of the present invention.

[0032] Figure 13 This is a schematic diagram of the anti-slip block drive component of the present invention.

[0033] Component designation explanation: 1. Lifting drive device; 2. Film feeding device; 3. Film supporting mechanism; 31. Traction support; 311. Support frame; 312. Wiring trough; 313. Cable inlet; 314. Guide foot; 315. Composite cable; 3151. Air hose; 3152. Limiting groove; 3153. Transmission line; 3154. Protective sleeve; 316. Repeater connector; 3161. T-junction box; 3162. Terminal block; 3163. Repeater air duct; 32. Guide rail; 321. U-shaped guide bar; 322. Limiting groove; 323. Dividing groove; 324. Air outlet pipe connector; 33. Membrane support drive component; 331. Protective housing; 332. Guide rod through hole; 333. Drive motor; 334. Drive worm gear; 335. Drive worm wheel; 3351. Arc groove; 34. Membrane support guide; 341. Pulling guide rod; 342. Driven groove; 343. Threaded joint; 344. Limiting baffle; 35. Membrane support; 351. L-shaped slider; 352. Airflow guide channel; 353. Internal threaded connector; 354. Air outlet; 355. Anti-slip block; 3551. Hinge groove; 356. Anti-slip block drive component; 3561. Curved connecting rod; 3562. Rotary shaft connecting seat; 3563. Anti-slip block hinge shaft; 3564. Piston connecting shaft; 3565. Drive piston; 3566. Angled insert rod; 36. Corrugated air guide tube; 4. Intelligent control box; 5. Flexible cable tray guide rail. Detailed Implementation

[0034] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0035] Please see Figures 1 to 13 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0036] like Figures 1-3As shown, this invention provides a cold stretch wrapping machine, including a lifting drive device 1. The lifting drive device 1 is a support frame with four columns. The inner wall of the columns is provided with guide grooves, and a linear drive device (linear motor, electric telescopic rod, electric threaded rod, etc.) that can realize linear up and down drive is provided in the guide grooves. A conveying device can be provided at the bottom of the lifting drive device 1 for conveying packaged goods. A film feeding device 2 is provided at the top of the lifting drive device 1. The film feeding device 2 is used to pull the packaging film wrapped on the roller into the interior of the lifting drive device 1, and to cut the packaging film after the packaging film is conveyed (the configuration of the lifting drive device 1 and the film feeding device 2 is the same as or similar to the existing device for realizing up and down drive and packaging film conveying and cutting, and can be referred to the existing cold stretch wrapping machine. Moreover, the above functions are not the technical problems to be solved by this application, and the structure will not be described in detail in the application documents). A film supporting mechanism 3 is provided below the film feeding device 2. The film supporting mechanism 3 can slide up and down along the axial direction of the lifting drive device 1 under the traction of the lifting drive device 1. During the film application process, the film-supporting mechanism 3 first rises to open the opening of the packaging film conveyed by the film-feeding device 2, then descends to cover the product with the packaging film. After film application, the film-supporting mechanism 3 releases the opening of the packaging film and continues to descend to separate the film-supporting mechanism 3 and the packaging film, thus completing the film application operation. An intelligent control box 4 is located on the side of the lifting drive device 1. The intelligent control box 4 contains a power connection device for connecting to an external power supply and / or a host computer, and includes a mainboard, PLC, microcontroller, CPU, and storage media—all necessary modules for power supply and motor control—to control the lifting drive device 1's drive of the film-supporting mechanism 3, as well as the opening and closing of the packaging film by the film-supporting mechanism 3. A flexible cable tray 5 connects the film-supporting mechanism 3 and the intelligent control box 4. Cables are installed in the flexible cable tray 5 for power supply and signal transmission; simultaneously, the flexible cable tray 5 adapts to the rising and falling of the film-supporting mechanism 3, bending and unfolding to prevent cable tangling and protect the cables.

[0037] Specifically, the film-supporting mechanism 3 includes a traction support 31, which is rectangular in shape. The outer surface of the traction support 31 is in contact with the inner wall of the four columns of the lifting drive device 1, and the four corners of the traction support 31 extend into the interior of the guide grooves of the four columns of the lifting drive device 1. Driven by the linear drive device in the guide groove, it moves up and down along the axis of the column. The outer surface of the traction support 31 is provided with multiple guide rails 32. The end of the guide rail 32 away from the traction support 31 is provided with a film-supporting drive 33. The film-supporting drive 33 is used to provide the power to open the packaging film opening and release the packaging film. The film-supporting drive 33 is connected to the power supply and control module inside the intelligent control box 4 through a cable. The output end of the membrane support drive 33 is provided with a separable membrane support guide 34. When installing the membrane support guide 34, it is inserted into the output end of the membrane support drive 33 and installed by the driving force of the membrane support drive 33. When disassembling, the membrane support drive 33 transmits power in reverse to make the membrane support guide 34 detach from the output end of the membrane support drive 33, thereby realizing the convenient installation and removal of the membrane support guide 34. The film-supporting guide 34 is driven by the film-supporting drive 33 to slide along the guide rail 32. The end of the film-supporting guide 34 is provided with a film-supporting member 35. The film-supporting member 35 moves with the drive of the film-supporting guide 34. When the film-supporting member 35 moves away from the film-supporting drive 33, all the film-supporting members 35 move closer to each other, so that they can enter the packaging film. As the film-supporting member 35 moves in the opposite direction, the opening of the packaging film can be opened by the film-supporting member 35, and the film-wrapping operation is realized with the descent of the traction support 31. After the film-wrapping is completed, the traction support 31 continues to drive the traction support 31 to descend. At this time, the top of the packaging film is constrained by the product, thereby realizing the separation of the film-supporting member 35 from the packaging film. After the product is packaged and conveyed out of the equipment, the traction support 31 rises to the inner top of the lifting drive device 1, waiting for the next traction of the packaging film for film wrapping.

[0038] like Figure 2 and Figure 4 As shown, in some embodiments, the traction support 31 of the present invention includes a support frame 311, which is made of steel and has a rectangular frame shape, thereby achieving the fit between the outer surface of the support frame 311 and the inner wall of the four columns in the lifting drive device 1. The support frame 311 has a wiring groove 312 inside, and the outer surface of the support frame 311 has an inlet 313 communicating with the wiring groove 312. The inlet 313 is connected to the end of the flexible wire groove guide rail 5. The cable led out from the intelligent control box 4 enters the wiring groove 312 from the inside of the flexible wire groove guide rail 5 through the inlet 313, and finally is introduced into the membrane support drive 33 through the guide rail 32, thereby realizing the power supply and control of the membrane support drive 33.

[0039] The support frame 311 is provided with guide feet 314 at each of its four corners. The guide feet 314 extend into the guide groove in the column of the lifting drive device 1. At least one guide foot 314 is connected to the output end of the linear drive device in the guide groove, and the other guide feet 314 are slidably connected to the traction guide slide rod in the guide groove to realize the traction and limiting of the support frame 311. The support frame 311 is driven to rise and fall by the cooperation of the drive device in the lifting drive device 1 and the guide feet 314.

[0040] The wiring trough 312 houses a composite cable 315. One end of the composite cable 315 is connected to the membrane drive component 33, and the other end extends into the interior of the intelligent control box 4 via the flexible cable trough guide rail 5. The composite cable 315 is a multi-core cable, with some cores used for power supply and others for signal transmission.

[0041] like Figures 2-4 and Figure 7 As shown, in some embodiments, each guide rail 32 of the present invention includes a U-shaped guide bar 321 made of metal. A limiting groove 322 is provided at the top of the U-shaped guide bar 321, extending through both ends of the U-shaped guide bar 321. The membrane support guide 34 moves telescopically within the limiting groove 322, while the membrane support member 35 can slide into the interior of the limiting groove 322 when it moves outward to its maximum extent. The limiting groove 322 supports and limits the membrane support member 35. A branch groove 323 is provided at the bottom inner part of the limiting groove 322. The branch groove 323 communicates with the wiring groove 312, and the integrated cable 315 arranged inside the wiring groove 312 is ultimately connected to the membrane support drive member 33 through the branch groove 323.

[0042] like Figure 7As shown, in some embodiments, the membrane support drive component 33 of the present invention includes a protective housing 331, which is fixed to the end of the U-shaped guide bar 321 away from the traction support component 31. A guide rod through hole 332 is provided at the connection between the protective housing 331 and the U-shaped guide bar 321. One end of the membrane support guide component 34 passes through the guide rod through hole 332 and extends into the interior of the limiting slide groove 322. After the membrane support guide component 34 passes through the guide rod through hole 332, a gap is left between its outer surface and the interior of the limiting slide groove 322 to reduce friction. A drive motor 333 is provided inside the protective housing 331. The drive motor 333 is a motor capable of controlling speed and direction. A composite cable 315 passes through the branch groove 323 and connects to the drive motor 333 along the side wall of the protective housing 331, thereby realizing the power supply and control of the drive motor 333. The output end of the drive motor 333 is equipped with a drive worm gear 334, and a drive worm wheel 335 is meshed with the side of the drive worm gear 334. The drive worm wheel 335 extends into the interior of the guide rod through hole 332 and meshes with the outer surface of the film-supporting guide 34. When the drive motor 333 is working, it drives the drive worm gear 334 to rotate in a predetermined direction. The rotating drive worm gear 334 drives the drive worm wheel 335 to rotate accordingly, thereby driving the film-supporting guide 34 to move along a predetermined trajectory, thereby driving the film-supporting member 35 to open the opening of the packaging film. The advantage of driving the drive worm wheel 335 to rotate via the drive worm gear 334 to drive the film-supporting guide 34 is that the power output is stable, and the self-locking between the drive worm gear 334 and the drive worm wheel 335 prevents the elastic pressure of the packaging film from pulling the film-supporting member 35 in the opposite direction.

[0043] like Figure 3 , Figure 9 and Figure 10As shown, in some embodiments, the membrane guide 34 of the present invention includes a traction guide rod 341, which is elongated or tubular. The cross-section of the guide rod through hole 332 is adapted to the cross-sectional shape of the traction guide rod 341. The traction guide rod 341 passes through the guide rod through hole 332. A plurality of driven grooves 342 are provided at equal intervals on the outer surface of the traction guide rod 341. The driven grooves 342 are at least distributed on the contact surface between the traction guide rod 341 and the drive worm gear 335. The driven grooves 342 mesh with the drive worm gear 335. When the drive worm gear 335 rotates, the teeth on the surface of the drive worm gear 335 will push the traction guide rod 341 to move in the corresponding direction through the driven grooves 342, so as to realize the extension and retraction sliding of the traction guide rod 341 in the limiting slide groove 322. When installing the guide rod 341, simply insert it into the guide rod through hole 332, allowing the driven groove 342 to engage with the drive worm gear 335. Then, drive the drive worm gear 335 via the drive motor 333 to move the guide rod 341 into the lifting drive device 1. To remove the guide rod 341, simply drive the guide rod 341 in the reverse direction via the drive motor 333, disengaging the driven groove 342 from the drive worm gear 335, allowing the guide rod 341 to be removed for replacement. The entire installation and removal process of the guide rod 341 requires no complex operations, and the guide rod 341 can be replaced at any time, thus improving the equipment's versatility.

[0044] The end of the guide rod 341 is provided with a threaded joint 343. The membrane support 35 is connected to the guide rod 341 through the threaded joint 343, thereby realizing convenient disassembly and assembly of the membrane support 35 and avoiding interference from the membrane support 35 during the disassembly of the guide rod 341. The end of the guide rod 341 away from the membrane support 35 is provided with a limiting baffle 344. The diameter of the limiting baffle 344 is larger than the inner diameter of the guide rod through hole 332. The limiting baffle 344 and the membrane support 35 cooperate to limit the maximum travel of the guide rod 341, preventing the guide rod 341 from moving excessively and falling out of the guide rod through hole 332.

[0045] like Figure 8 As shown, in some embodiments, the outer surface of the drive worm gear 335 of the present invention is provided with an arc-shaped groove 3351. The inner diameter of the arc-shaped groove 3351 is adapted to the diameter of the guide rod 341. This is used to increase the contact area between the teeth on the surface of the drive worm gear 335 and the driven groove 342, thereby improving the stress point and preventing the teeth on the surface of the drive worm gear 335 from having a small contact area with the driven groove 342, which would make it easy to break (if the guide rod 341 is a long strip, the contact point between the guide rod 341 and the drive worm gear 335 is set as an arc to increase the contact area between the drive worm gear 335 and the guide rod 341, or the arc-shaped groove 3351 is not provided).

[0046] like Figures 9-11As shown, in some embodiments, the film support member 35 of the present invention includes an L-shaped slider 351, which is horizontally arranged. The longer end of the L-shaped slider 351 is used to connect to the guide rod 341, while the shorter end is vertically arranged to support the packaging film. An internal threaded connector 353 is provided at the end of the L-shaped slider 351 near the guide rod 341. The L-shaped slider 351 is threadedly connected to the end of the guide rod 341 through the internal threaded connector 353 and the threaded connector 343, thus connecting the guide rod 341 and the L-shaped slider 351. During use, the L-shaped slider 351 can be easily installed and removed by simply rotating it, achieving a convenient user experience.

[0047] like Figure 3 , Figure 5 , Figure 10 and Figure 11 As shown, in some embodiments, the guide rod 341 of the present invention is a hollow tube, thereby allowing gas to pass through the interior of the guide rod 341. Threaded connectors 343 are provided at both ends of the guide rod 341, so that one end of the guide rod 341 can be connected to the internal threaded connector 353 to output gas, and the other end can be connected to the gas inlet.

[0048] The L-shaped slider 351 has an internal airflow guiding channel 352, which is connected to the internal threaded connector 353. The other end of the L-shaped slider 351 has an air outlet 354. Gas enters the airflow guiding channel 352 after passing through the guide rod 341 and is finally blown out from the air outlet 354. The blown gas directly enters the interior of the packaging film, causing the packaging film to expand and bulge. The expanded packaging film effectively reduces the contact force between the inner wall of the packaging film and the surface of the packaged item during the wrapping process, improving the protective properties of the packaging film (if the surface of the packaged item has sharp edges or corners, directly wrapping the film will cause the inner wall of the packaging film to adhere to the surface of the packaged item, generating significant friction and tension with the sharp edges or corners, which can easily lead to the packaging film breaking).

[0049] To facilitate wiring and gas delivery, the integrated cable 315 includes a gas-conducting hose 3151. The gas-conducting hose 3151 is a flexible, fully flexible tube that bends with the flexible cable tray guide rail 5, facilitating its placement in the wiring tray 312 and branch tray 323. The outer surface of the gas-conducting hose 3151 has several limiting grooves 3152. Each limiting groove 3152 contains a transmission line 3153, which is a sheathed wire. Each transmission line 3153 is a different color for identification during wiring. The two ends of the transmission line 3153 extend to the membrane support drive 33 and the intelligent control box 4, respectively, enabling the power supply module and control module in the intelligent control box 4 to power and control the membrane support drive 33. The outer surface of the transmission line 3153 is covered with a protective sleeve 3154. The limiting groove 3152 and the protective sleeve 3154 cooperate to limit the transmission line 3153, preventing multiple transmission lines 3153 from getting tangled together when the integrated cable 315 moves with the flexible cable tray 5. The protective sleeve 3154 also protects the air duct hose 3151 and the transmission line 3153. During use, the transmission line 3153 will heat up due to power, and some of the heat will be conducted to the air duct hose 3151. At this time, when gas is transported inside the air duct hose 3151, the flow of gas will dissipate heat from the air duct hose 3151, thereby indirectly dissipating heat from the transmission line 3153.

[0050] The bottom of the U-shaped guide bar 321 is provided with an air outlet connector 324, and the air guide hose 3151 is connected to the air outlet connector 324 from the inside of the branch groove 323. A corrugated air guide tube 36 is provided between the air outlet connector 324 and the threaded connector 343 near the end of the limit baffle 344. The corrugated air guide tube 36 has elasticity, so it can extend and retract accordingly when the guide rod 341 moves. When the device has a gas delivery function, the intelligent control box 4 integrates an air pump and is connected to the air pump through the air guide hose 3151. When the air pump is working, it delivers gas to the air outlet connector 324 through the air guide hose 3151. The gas enters the inside of the guide rod 341 through the corrugated air guide tube 36 and is finally blown into the inside of the packaging film from the air outlet 354.

[0051] like Figure 4 and Figure 6As shown, in some embodiments, the integrated cable 315 of the present invention is provided with a repeater connector 316 at the connection between each wiring trough 312 and the branch trough 323. The repeater connector 316 is used to branch off from the main line to provide power and signal transmission to the drive motor 333 at the corresponding position, and to supply gas to the guide rod 341 at the corresponding position. The repeater connector 316 includes a three-way box 3161, which has three interconnected openings. Each opening of the three-way box 3161 has a terminal block 3162 inside, and each terminal block 3162 has a terminal block adapted to the number of transmission lines 3153. The terminal block is used to connect with the transmission line 3153. The terminal blocks on each terminal block 3162 are connected in parallel to each other through cables to achieve electrical connection, thereby enabling the transmission lines 3153 in all directions of the three-way box 3161 to be electrically connected.

[0052] The junction box 3162 is equipped with a relay air guide tube 3163, which is a three-way tube. The three ports of the relay air guide tube 3163 extend to the opening of each port of the three-way box 3161, and the end of the relay air guide tube 3163 is connected to the air guide hose 3151, thereby realizing the gas diversion and enabling one gas supply source to supply gas to multiple points simultaneously.

[0053] like Figure 9 , Figure 11 and Figure 12 As shown, in some embodiments, the contact surface between the L-shaped slider 351 and the outer packaging film is provided with multiple anti-slip blocks 355. During film application, the anti-slip blocks 355 increase the friction between the L-shaped slider 351 and the packaging film, improving the stability of the packaging film during application; this prevents the gas blown upwards from the vent 354 from driving the packaging film upwards, causing it to detach from the constraint of the L-shaped slider 351. When air is not supplied, the anti-slip blocks 355 extend into the interior of the airflow guiding channel 352, with their outer surface flush with the outer surface of the L-shaped slider 351, reducing the friction between the L-shaped slider 351 and the packaging film, facilitating separation. When air is supplied, the anti-slip blocks 355 can extend outwards from the airflow guiding channel 352, protruding from the surface of the L-shaped slider 351, increasing the friction between the L-shaped slider 351 and the packaging film, making it difficult for the packaging film to detach.

[0054] The anti-slip block 355 has a hinge groove 3551 that runs vertically through it. The anti-slip block drive 356 is hinged inside the corner of the airflow guide channel 352. One end of the anti-slip block drive 356 is hinged to the inside of the hinge groove 3551. When the airflow guide channel 352 is ventilated, the gas pressure will drive the anti-slip block drive 356 to rotate around the hinge point between the anti-slip block drive 356 and the airflow guide channel 352 as the pivot point, so as to push the anti-slip block 355 to move to the outside of the L-shaped slider 351.

[0055] Specifically, the anti-slip block drive component 356 includes a curved connecting rod 3561, which is L-shaped or curved. One end of the curved connecting rod 3561 is located inside the airflow guide channel 352 at the long end of the L-shaped slider 351, and the other end is located inside the airflow guide channel 352 at the short end of the L-shaped slider 351. A pivot connecting seat 3562 is provided at the corner of the curved connecting rod 3561. The pivot connecting seat 3562 is located at the corner of the L-shaped slider 351. The curved connecting rod 3561 is hinged to the interior of the airflow guide channel 352 through the pivot connecting seat 3562, so that the curved connecting rod 3561 can swing around the pivot connecting seat 3562.

[0056] The upper end of the curved connecting rod 3561 is provided with a slanted insert rod 3566. The upper end of the curved connecting rod 3561 and the end of the slanted insert rod 3566 are both provided with anti-sliding slider hinge shafts 3563 and hinge grooves 3551. When the lower end of the curved connecting rod 3561 is activated, the upper end of the curved connecting rod 3561 and the slanted insert rod 3566 will push the anti-sliding slider 355 in the corresponding direction, thereby increasing the friction of the L-shaped slider 351 surface by the protrusion of the anti-sliding slider 355 or reducing the friction of the L-shaped slider 351 surface by the contraction of the anti-sliding slider 355.

[0057] The lower end of the hinge groove 3551 is provided with a piston connecting shaft 3564, and a drive piston 3565 is hinged to the piston connecting shaft 3564. The drive piston 3565 is adapted to the inner diameter of the airflow guiding channel 352 and is used to seal the bend of the airflow guiding channel 352. When gas enters the airflow guiding channel 352, the gas will push the drive piston 3565 to move and release the seal on the airflow guiding channel 352, allowing the gas to be blown out through the air outlet 354. At this time, the moving drive piston 3565 will push the curved connecting rod 3561 to rotate along the rotating shaft connecting seat 3562, and then drive the anti-slip block 355 to protrude from the surface of the L-shaped slider 351 under the action of the lever to increase the friction, so that the anti-slip block 355 can be driven without additional power. When the film coating is finished and it is necessary to separate the L-shaped slider 351 and the packaging film, the conveying can be stopped. At this time, the protruding anti-sliding slider 355 is squeezed into the interior of the airflow guiding channel 352 under the elastic pressure of the packaging film, which facilitates the separation between the L-shaped slider 351 and the packaging film. The squeezed anti-sliding slider 355 will drive the drive piston 3565 back to the initial position through the curved connecting rod 3561 to seal and cut off the interior of the airflow guiding channel 352.

[0058] In summary, when the cold stretching and wrapping machine of the present invention is used, the packaging film wrapped around the roller is conveyed to the inside of the lifting drive device 1 by the film feeding device 2. Then, the film supporting member 35 is driven to close in the middle by the film supporting drive member 33, and the traction support member 31 is driven to rise by the lifting drive device 1, so that the film supporting member 35 is inserted into the packaging film. Subsequently, the film supporting member 35 is driven to move backward by the film supporting drive member 33, thereby opening the opening of the packaging film. At the same time, the lifting drive device 1 drives the traction support member 31 to slowly descend and wrap the opened packaging film over the outer surface of the product. The air pump in the intelligent control box 4 synchronously delivers gas to the film supporting member 35 through the integrated cable 315. The gas is blown into the packaging film through the air outlet 354, so that the packaging film is opened and the inner wall of the packaging film is prevented from being severely scratched by the edge of the product, which would cause the packaging film to break. During the gas delivery process, the gas pressure drives the anti-sliding slider drive member 356 to rotate to push the anti-sliding slider 355 against the inner wall of the packaging film, increasing the friction of the packaging film and preventing the packaging film from detaching under gas pressure.

[0059] After the film is applied, the gas supply to the inside of the packaging film is stopped, and the film feeding device 2 cuts the packaging film from the top. At this time, the anti-sliding block 355 retracts under the pressure of gravity and the packaging film. At the same time, the traction support 31 continues to descend, causing the L-shaped slider 351 to detach from the bottom of the packaging film, thus completing the packaging process.

[0060] If the length of the guide rod 341 is not suitable for the product size, the L-shaped slider 351 can be rotated to disengage the guide rod 341 from the product, and the guide rod 341 can be separated from the corrugated air duct 36. Then, the guide rod 341 can be driven by the reverse membrane support drive 33 to disengage it from the guide rod through hole 332. Then, a guide rod 341 of the correct size can be inserted into the opening of the guide rod through hole 332, and the guide rod 341 can be driven by the membrane support drive 33 to penetrate deeper into the guide rod through hole 332. Then, the corrugated air duct 36 and the membrane support 35 can be connected respectively to replace the membrane support guide 34, without the need for a lot of disassembly and calibration operations.

[0061] The above description is merely an illustrative embodiment of the present invention and is not intended to limit the scope of the invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention should fall within the scope of protection of the present invention. Furthermore, it should be noted that the components of the present invention are not limited to the overall application described above. Each technical feature described in the specification can be used individually or in combination as needed. Therefore, the present invention naturally covers other combinations and specific applications related to the inventive points of this case.

Claims

1. A cold stretch sleeving machine characterized by, The device includes a lifting drive device (1), a film feeding device (2) is provided on the top of the lifting drive device (1), a film supporting mechanism (3) is provided below the film feeding device (2), the film supporting mechanism (3) can slide up and down along the axial direction of the lifting drive device (1) under the traction of the lifting drive device (1), an intelligent control box (4) is provided on the side of the lifting drive device (1), and a flexible wire groove guide rail (5) is provided between the film supporting mechanism (3) and the intelligent control box (4). The membrane support mechanism (3) includes a traction support (31), which is rectangular. The outer surface of the traction support (31) is provided with multiple guide rails (32). A membrane support drive (33) is provided at one end of the guide rail (32) away from the traction support (31). A separable membrane support guide (34) is provided at the output end of the membrane support drive (33). The membrane support guide (34) is driven by the membrane support drive (33) and slides along the track of the guide rail (32). A membrane support member (35) is provided at the end of the membrane support guide (34). The membrane support member (35) moves with the drive of the membrane support guide (34). The traction support (31) includes a support frame (311), which is rectangular. The support frame (311) has a wiring groove (312) inside and an inlet (313) communicating with the wiring groove (312) on the outer surface of the support frame (311). The inlet (313) is connected to the end of the flexible wire groove guide rail (5). The support frame (311) is provided with guide feet (314) at each of its four corners, and the guide feet (314) are connected to the drive device provided in the lifting drive device (1); The wiring trough (312) is equipped with a composite cable (315). One end of the composite cable (315) is connected to the membrane drive component (33), and the other end of the composite cable (315) extends into the interior of the intelligent control box (4) through the flexible cable trough guide rail (5). The membrane support guide (34) includes a traction guide rod (341), which is a hollow tube; The membrane support (35) includes an L-shaped slider (351), and an internal threaded connector (353) is provided at one end of the L-shaped slider (351) near the guide rod (341). The L-shaped slider (351) is connected to the guide rod (341) through the internal threaded connector (353) and the threaded connector (343). The L-shaped slider (351) has an airflow guiding channel (352) inside, which is connected to the internal threaded connector (353). The other end of the L-shaped slider (351) has an air outlet (354). The guide rail (32) includes a U-shaped guide bar (321). The top of the U-shaped guide bar (321) is provided with a limiting groove (322) that runs through both ends of the U-shaped guide bar (321). The bottom of the limiting groove (322) is provided with a wire distribution groove (323). The wire distribution groove (323) is connected to the wiring groove (312). The integrated cable (315) is connected to the membrane support drive (33) through the wire distribution groove (323). The membrane support drive (33) includes a protective shell (331), which is fixed to one end of the U-shaped guide (321) away from the traction support (31). The connection between the protective shell (331) and the U-shaped guide (321) is provided with a guide rod through hole (332). The protective shell (331) is provided with a drive motor (333) inside. The output end of the drive motor (333) is provided with a drive worm (334). The side of the drive worm (334) is meshed with a drive worm wheel (335). The drive worm wheel (335) extends into the interior of the guide rod through hole (332) and meshes with the outer surface of the membrane support guide (34). Both ends of the guide rod (341) are provided with threaded joints (343), the membrane support (35) is connected to the guide rod (341) through the threaded joints (343), and a limiting baffle (344) is provided at the end of the guide rod (341) away from the membrane support (35). The integrated cable (315) includes an air guide hose (3151), the outer surface of which is provided with a plurality of limiting grooves (3152), each of which is provided with a transmission line (3153), and the outer surface of the transmission line (3153) is covered with a protective sleeve (3154). The bottom of the U-shaped guide bar (321) is provided with an air outlet connector (324), and the air guide hose (3151) is connected to the air outlet connector (324) from the inside of the branch groove (323); A corrugated air guide pipe (36) is provided between the air outlet pipe connector (324) and the threaded connector (343) near the end of the limiting baffle (344).

2. A cold stretch sleeving machine according to claim 1, characterized in that: The guide rod (341) passes through the guide rod through hole (332), and the outer surface of the guide rod (341) is provided with a plurality of driven grooves (342) at equal intervals. The driven grooves (342) mesh with the drive worm gear (335).

3. A cold stretch-film wrapping machine according to claim 2, wherein: The outer surface of the drive worm gear (335) is provided with an arc groove (3351), the inner diameter of which is adapted to the diameter of the guide rod (341).

4. A cold stretch sleeving machine according to claim 3, wherein: The integrated cable (315) is provided with a relay connector (316) at the connection between the wiring trough (312) and the branch trough (323). The relay connector (316) includes a three-way box (3161). Each opening of the three-way box (3161) is provided with a terminal block (3162). Each terminal block (3162) is electrically connected to each other. The terminal block (3162) is electrically connected to the transmission line (3153). The junction box (3162) is equipped with a relay air pipe (3163), which is a three-way pipe. The three ports of the relay air pipe (3163) extend to the opening of each port of the three-way box (3161). The end of the relay air pipe (3163) is connected to the air hose (3151).

5. A cold stretch sleeving machine according to claim 4, wherein: The L-shaped slider (351) has multiple anti-slip blocks (355) on its contact surface with the outer packaging film. The anti-slip blocks (355) extend into the interior of the airflow guiding channel (352) and can also extend outward from the airflow guiding channel (352). The anti-slip block (355) has a hinge groove (3551) vertically penetrating through it. The anti-slip block drive (356) is hinged inside the corner of the airflow guide channel (352). One end of the anti-slip block drive (356) is hinged to the inside of the hinge groove (3551). The anti-slip block drive component (356) includes a curved connecting rod (3561), which is an L-shaped rod. A pivot connecting seat (3562) is provided at the corner of the curved connecting rod (3561). The curved connecting rod (3561) is hinged to the inside of the airflow guide channel (352) through the pivot connecting seat (3562). The upper side of the curved connecting rod (3561) is provided with a slanted insert rod (3566), and the upper end of the curved connecting rod (3561) and the end of the slanted insert rod (3566) are both provided with anti-slip block hinge shaft (3563) and hinge groove (3551) for hinge connection. The lower end of the hinge groove (3551) is provided with a piston connecting shaft (3564), and a driving piston (3565) is hinged to the piston connecting shaft (3564). The driving piston (3565) is adapted to the inner diameter of the airflow guiding channel (352).

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