Film coating equipment capable of automatically winding and thermally shrinking

Abstract

The invention relates to the technical field of trundle body film coating, in particular to automatic winding and thermal shrinkage film coating equipment which is characterized in that a film unwinding mechanism, a thermal shrinkage mechanism, a film coating station and a cutting mechanism are arranged on a rack; the film wrapping station is provided with a trundle positioning column rotationally connected to the rack. A rotating mechanism is arranged on the rack; the rotating mechanism is arranged between the membrane unwinding mechanism and the cutting mechanism; the rotating mechanism is used for driving the trundle body to rotate and winding the film material on the outer circle surface of the trundle body. When the trundle film coating device is used, automatic film coating can be achieved, manual winding and manual heating are not needed, the trundle film coating efficiency is improved, the old strength is reduced, and stable film coating quality can be guaranteed.

Description

Technical Field

[0001] This invention relates to the field of caster body coating technology, and in particular to an automatic wrapping and heat-shrink coating device. Background Technology

[0002] Casters are core mobility components in various fields such as industrial manufacturing, furniture and home appliances, logistics and transportation, and medical equipment. Their application scenarios are becoming increasingly complex, and performance requirements are constantly rising. To meet diverse needs such as weight reduction, shock absorption, corrosion resistance, high temperature resistance, and low temperature resistance, conventional casters on the market typically employ a coating process on the surface of metal or other substrates to form a composite structure that balances the strength of the substrate with the functional characteristics of the coating layer. Currently, a variety of materials are used for caster coating, mainly including PVC, nylon, PU, ​​TPR, and rubber. Different coating materials are suitable for different application scenarios. For example, PU material combines wear resistance and quiet operation, making it suitable for medical equipment and office furniture casters; TPR material has good elasticity and adhesion, effectively improving the caster's cushioning performance and coating adhesion, and is widely used in industrial equipment casters and other fields.

[0003] After the caster wheels undergo rubber coating, their rubber-coated surfaces are highly susceptible to damage or contamination throughout the entire process from production to final shipment. Equipment friction during production, collisions during handling, and dust accumulation during storage can all lead to scratches, stains, and other defects on the rubber-coated surface. This not only affects the caster's appearance but may also compromise the protective properties of the rubber coating, shortening the caster's lifespan and consequently impacting the product's market competitiveness and shipment qualification rate. Therefore, applying a dustproof film to the caster wheel surface after production is an essential step. This dustproof film effectively isolates dust, stains, and other contaminants, preventing scratches on the caster surface during subsequent handling and ensuring the caster's appearance quality and performance integrity upon leaving the factory.

[0004] Currently, the industry standard for dustproof film coating on casters is to use manual labor with auxiliary positioning. The specific procedure involves operators using simple positioning tools to wrap the dustproof film around the caster wheel surface. After wrapping, a heating device is used to thermoplasticize the wrapped film, ensuring a tight fit to the caster surface, thus completing the coating process. However, this traditional manual coating process has several insurmountable drawbacks, severely restricting caster production efficiency and product quality improvement. Specifically, these drawbacks include the following: First, manual operation is time-consuming and labor-intensive, resulting in low production efficiency and making it difficult to meet the needs of mass production of casters. With the large-scale development of the caster industry, especially in the fields of furniture hardware and industrial parts, the demand for mass production of casters is increasing. However, the manual wrapping method relies on the operator's skill level, and it takes a lot of manual time to complete the wrapping and thermoforming of each caster, which cannot meet the requirements of efficient production. At the same time, labor costs remain high, which is not conducive to enterprises reducing costs and increasing efficiency.

[0005] Secondly, insufficient positioning accuracy can easily lead to incomplete coverage. Manual positioning methods, aided by auxiliary tools, are heavily influenced by human factors such as operator technique and visual judgment, making it difficult to achieve precise alignment between the dustproof film and the caster wheel. Positioning deviations are quite common. This inaccurate positioning can result in the caster surface not being completely covered by the dustproof film, or the film being wrapped too loosely or too tightly. This not only fails to provide effective dust and scratch protection but may also lead to wrinkles and peeling of the film after thermoforming, resulting in defects in the caster's appearance, which in turn affects product shipment and reduces the product yield. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings and deficiencies of the prior art by providing an automatic wrapping and heat-shrinking equipment.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: The present invention discloses an automatic wrapping and heat-shrinking equipment, comprising a frame; the frame is provided with a film unwinding mechanism, a heat-shrinking mechanism, a wrapping station and a cutting mechanism; The coating station is equipped with caster positioning columns that are rotatably connected to the frame; The frame is equipped with a rotating mechanism; the rotating mechanism is located between the film unwinding mechanism and the cutting mechanism; the rotating mechanism is used to drive the caster body to rotate and to wind the film material around the outer surface of the caster body.

[0008] Furthermore, the coating station also includes a turntable mechanism; the turntable mechanism is provided with a turntable; there are two caster positioning posts; the caster positioning posts are distributed circumferentially on the turntable; there are two rotating mechanisms; the two rotating mechanisms are respectively arranged on both sides of the turntable mechanism; One of the caster positioning posts is located between the film unwinding mechanism and the cutting mechanism; the heat shrinking mechanism is a hot air blower; the air outlet of the hot air blower is positioned directly opposite the other caster positioning post.

[0009] Furthermore, a pressing assembly is provided between the two rotating mechanisms; a linear module is provided on the frame; a sliding seat is connected to the linear module; a swing arm assembly rotatably connected to the pressing assembly is connected to the sliding seat; one end of the pressing assembly is fixed to the turntable; a folding assembly is provided between the two rotating mechanisms; after the sliding seat presses the folding assembly, the two rotating mechanisms move closer to each other. In this state, the sliding seat pulls the pressing assembly away from the caster positioning post through the swing arm assembly; after the sliding seat releases the pressure on the folding assembly, the two rotating mechanisms move away from each other. In this state, the pressing assembly is pushed out towards the caster positioning post through the swing arm assembly.

[0010] Furthermore, the rotating mechanism includes a wrapping fixing plate fixed on the frame, a wrapping guide sleeve fixed on the wrapping fixing plate, a lifting guide shaft slidably connected in the wrapping guide sleeve, and a wrapping lifting plate fixed on the lifting guide shaft; a motor is fixed on the wrapping lifting plate; a pressure roller is fixed at the output end of the motor; and a drive assembly is connected to the wrapping lifting plate to drive the wrapping lifting plate away from or towards the caster positioning column.

[0011] Furthermore, the folding assembly consists of a steel cable and multiple tension rollers; multiple tension springs are connected between the rotating mechanism and the frame; one end of the steel cable is fixed to one of the rotating mechanisms; the other end of the steel cable passes through each tension roller in sequence and is fixedly connected to another rotating mechanism.

[0012] Furthermore, the sliding seat is provided with grooved rollers.

[0013] Furthermore, the pressing assembly includes multiple pressing guide rods fixed on the turntable, a pressing guide sleeve slidably connected to the pressing guide rods, and a push plate fixed on the pressing guide sleeve; a connecting fixing seat and multiple pressing heads are fixed on the push plate; a rotating seat is rotatably connected to the connecting fixing seat; one end of the swing arm assembly is hinged to the rotating seat; the other end of the swing arm assembly is hinged to the sliding seat.

[0014] Furthermore, the rocker arm assembly consists of an outer sleeve with one end hinged to a rotating seat and an inner rod with one end slidably connected inside the outer sleeve; the other end of the inner rod is hinged to the sliding seat; an external thread is provided on the surface of the inner rod; a threaded hole is provided on the side wall of the outer sleeve; a screw is internally threaded into the threaded hole; the end of the screw abuts against the external thread of the inner rod.

[0015] Furthermore, a fixture fixing plate is fixed on the caster positioning column; the fixture fixing plate is provided with two parallel first strip grooves; the turntable is provided with multiple first threaded holes; each first strip groove is provided with a bolt; the fixture fixing plate is fixed on the turntable by passing the bolt through the first strip groove and threading it into the first threaded hole.

[0016] Furthermore, the cutting mechanism includes a cutting ejector cylinder fixed at one end to the frame and a push plate slidably connected to the frame; a rear pressure bracket and a cutting cylinder are fixed on the push plate; an electric heating element is fixed to the piston rod end of the cutting cylinder; an electric heating wire is provided on the electric heating element; a second slot is provided on the rear pressure bracket of the push plate; multiple second threaded holes are provided on the rear pressure bracket; bolts pass through the second slots and are threadedly connected to the second threaded holes; a rear pressure roller is rotatably connected to the rear pressure bracket; and the piston rod end of the cutting ejector cylinder is fixedly connected to the push plate.

[0017] With the above structure, the beneficial effects of this invention are as follows: After the film unwinding mechanism unwinds the film, one end of the film is adhered and fixed to the surface of the caster body; while the rotating mechanism wraps the film around the surface of the caster body, the caster body rotates, and the heat shrinking mechanism heats the film on the surface of the caster body, causing the film to shrink and fix to the surface of the caster body; after the film of the caster body is heat-shrinked, the hopper pushing cylinder drives the receiving hopper to move to the bottom of the caster body after the film is wrapped, and then the cylinder of the pushing component drives the ejector pin through the through hole on the wrapping station, pushing the caster body out and into the receiving hopper; then the hopper pushing cylinder drives the receiving hopper to pull out to the outside of the through hole of the wrapping station. After heat shrinking, the caster body is removed from the caster positioning post and another product to be wrapped is placed in it; the wrapping equipment with this structure can realize automatic wrapping, without manual winding and manual heating, improving the efficiency of caster wrapping, reducing the strength of the caster body, and ensuring the stability of the wrapping quality. Attached Figure Description

[0018] Figure 1 This is a first-view perspective perspective view of the present invention; Figure 2 This is a second-view perspective perspective view of the present invention; Figure 3 It is a first-person three-dimensional view of the combination of the membrane unwinding mechanism, heat shrinking mechanism, wrapping station and material discharge mechanism; Figure 4 It is a second-view stereoscopic view of the combination of the membrane unwinding mechanism, heat shrinking mechanism, wrapping station and material discharge mechanism; Figure 5 This is a first-person perspective 3D view of the coating station; Figure 6 This is a second-view stereoscopic view of the coating station; Figure 7 This is a structural diagram of the cutting mechanism; Figure 8 This is a first-view perspective perspective view of the combined structure of two rotating mechanisms and a pressing assembly. Figure 9 This is a second-view perspective perspective view of the combined structure of two rotating mechanisms and a pressing assembly. Figure 10 This is a structural diagram of the pressing assembly; Figure 11 This is a structural diagram of the rotating mechanism; Figure 12 This is a structural diagram of the sliding seat and rocker arm assembly; Figure 13 This is a diagram showing the state of the steel cable and sliding seat after the two rotating mechanisms have moved away from each other; Explanation of reference numerals in the attached figures: 1. Film unwinding mechanism; 2. Heat shrinking mechanism; 3. Long cylinder; 4. Frame; 5. Rotation mechanism; 501. Lifting guide shaft; 502. Tension spring; 503. Film wrapping fixing plate; 504. Film wrapping guide sleeve; 505. Film wrapping lifting plate; 506. Motor; 507. Pressure roller; 6. Pressing assembly; 601. Connecting fixing seat; 602. Push plate; 603. Press head; 604. Material clamping guide sleeve; 605. Material clamping guide rod; 7. Coating station; 701. Fixture fixing plate; 70101. First strip groove; 702. Turntable drive motor; 703. Caster positioning pin; 704. Turntable; 70401. First threaded hole; 705. Drive gear; 706. Gear ring; 8. Cutting mechanism; 801. Cutting ejection cylinder; 802. Push plate; 80201. Second strip groove; 803. Heating assembly 804. Rear pressure bracket; 80401. Second threaded hole; 805. Rear pressure roller; 806. Heating wire; 807. Cutting cylinder; 9. Discharge mechanism; 901. Receiving hopper; 902. Hopper pusher cylinder; 10. Sliding seat; 11. Steel cable; 12. Swing rod assembly; 1201. Inner rod; 1202. Screw; 1203. Outer sleeve; 13. Rotating seat; 14. Grooved roller; 15. Tensioning roller; 16. Pushing assembly. Detailed Implementation

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] like Figures 1 to 13 As shown, the automatic wrapping and heat-shrinking equipment of the present invention includes a frame 4; the frame 4 is provided with a film unwinding mechanism 1, a heat-shrinking mechanism 2, a wrapping station 7 and a cutting mechanism 8; The coating station 7 is equipped with a caster positioning column 703 that is rotatably connected to the frame 4; The frame 4 is provided with a rotating mechanism 5; the rotating mechanism 5 is located between the film unwinding mechanism 1 and the cutting mechanism 8; the rotating mechanism 5 is used to drive the caster body to rotate and to wind the film material around the outer surface of the caster body. The unwinding mechanism 1 and the heat shrinking mechanism 2 are essentially no different from existing technologies, so they will not be described in detail. The hole in the middle of the caster body matches the caster positioning post 703. Therefore, after the caster body is inserted into the caster positioning post 703, the friction between the outer surface of the caster positioning post 703 and the inner hole of the caster body can fix the caster body on the caster positioning post 703. The film itself has adhesive force and can adhere to the surface of the caster body. The frame 4 is also equipped with a discharge mechanism 9 and a pusher assembly 16; the discharge mechanism 9 consists of a receiving hopper 901 and a hopper pusher cylinder 902 for driving the receiving hopper 901 to move. The feeding assembly 16 consists of a cylinder and an ejector pin; the coating station 7 is provided with a through hole for the ejector pin to pass through; After the unwinding mechanism 1 unwinds the film, one end of the film is adhered and fixed to the surface of the caster body. While the rotating mechanism 5 wraps the film around the surface of the caster body, the caster body rotates. The heat shrinking mechanism 2 heats the film on the surface of the caster body, so that the film shrinks and is fixed to the surface of the caster body. After the film of the caster body is heat-shrinked, the hopper pushing cylinder 902 drives the receiving hopper 901 to move to the bottom of the caster body after the film is wrapped. Then, the cylinder of the pushing component 16 drives the ejector pin to pass through the through hole on the wrapping station 7, pushes the caster body out and falls into the receiving hopper 901. Then, the hopper pushing cylinder 902 drives the receiving hopper 901 to be pulled out to the outside of the through hole of the wrapping station 7.

[0021] After heat shrinking is complete, remove the caster body from the caster positioning post 703 and put it back into another product to be wrapped; The coating equipment of this structure can achieve automatic coating without manual winding and heating, which improves the efficiency of caster coating, reduces the strength of the caster, and ensures the stability of the coating quality.

[0022] In a preferred embodiment of the present invention, the coating station 7 further includes a turntable mechanism; the turntable mechanism is provided with a turntable 704; there are two caster positioning pins 703; the caster positioning pins 703 are circumferentially distributed on the turntable 704; there are two rotating mechanisms 5; the two rotating mechanisms 5 are respectively provided on both sides of the turntable mechanism; One of the caster positioning posts 703 is located between the film unwinding mechanism 1 and the cutting mechanism 8; the heat shrinking mechanism 2 is a hot air blower; the air outlet of the hot air blower is positioned directly opposite the other caster positioning post 703; The caster positioning column 703 is fixed on the turntable 704; the gear ring 706 has a structure with multiple teeth evenly distributed on the outer side wall; the caster positioning column 703 has two workstations; the caster positioning column 703 is rotatably connected to the turntable 704; The turntable mechanism includes a turntable drive motor 702, a gear ring 706 rotatably connected to the frame 4, and a turntable 704 fixed to the gear ring 706; two caster positioning pins 703 are circumferentially distributed on the turntable 704; one end of the turntable drive motor 702 is fixed to the frame 4; the other end of the turntable drive motor 702 is fixed with a drive gear 705 that meshes with the gear ring 706; The turntable drive motor 702 rotates through the drive gear 705, the gear ring 706 and the turntable 704, causing the positions of the two caster positioning pins 703 to be exchanged, thus realizing the exchange of the two workstations.

[0023] The lower station is used for loading and unloading the caster body and heat shrinking the film; the upper station is used for wrapping the film. After the lower caster positioning pin 703 is installed into the caster body, the turntable mechanism drives the turntable 704 to rotate, and the caster positioning pin 703, which has just been installed into the caster body, rotates to the top, ready for film wrapping. Meanwhile, the caster body and caster positioning pin 703, which have just been wrapped, rotate to the bottom; the upper and lower rotating mechanisms 5 respectively drive the caster bodies of the two caster positioning pins 703 to rotate. When the upper caster body rotates, the film material is wrapped around the outer wheel surface of the caster body and pressed tightly to complete the wrapping; while when the lower caster body with the film wrapped rotates, the hot air blower works to heat shrink the film; after heat shrinking is completed, the wrapped product is taken out again, and then a caster body to be wrapped is installed; by using two workstations to replace the loading and unloading and the wrapping, the two workstations are separated, reducing the contamination of the film. Separating the hot air and the wrapping prevents the material roll from being deformed by the hot air, and allows the heat shrinking and wrapping to be carried out simultaneously without affecting the film surface, thus improving the wrapping efficiency.

[0024] In a preferred embodiment of the present invention, a pressing assembly 6 is provided between the two rotating mechanisms 5; a linear module is provided on the frame 4; a sliding seat 10 is connected to the linear module; a swing arm assembly 12 rotatably connected to the pressing assembly 6 is connected to the sliding seat 10; one end of the pressing assembly 6 is fixed to the turntable 704; a folding assembly is provided between the two rotating mechanisms 5; after the sliding seat 10 presses the folding assembly, the two rotating mechanisms 5 move closer to each other. In this state, the sliding seat 10 pulls the pressing assembly 6 away from the caster positioning post 703 through the swing arm assembly 12; after the sliding seat 10 releases the pressure on the folding assembly, the two rotating mechanisms 5 move away from each other. In this state, the pressing assembly 6 is pushed out towards the caster positioning post 703 through the swing arm assembly 12.

[0025] The linear module consists of a long cylinder 3, a guide rail and a slider; the slider is fixed on the sliding seat 10, the guide rail is fixed on the frame 4 and forms a sliding connection with the slider; the two ends of the long cylinder 3 are fixed on the sliding seat 10 and the frame 4 respectively.

[0026] During the wrapping process, as the turntable 704 rotates as a whole, the pressing assembly 6 presses against the caster side surface on the caster positioning post 703 to prevent the caster body from detaching from the caster positioning post 703 when the turntable 704 rotates. After the caster body rotates to its position, the pressing assembly 6 releases its pressure on the caster positioning post 703, and then the two rotating mechanisms 5 move closer to each other.

[0027] In this structure, a linear module drives the pressing assembly 6 and two rotating mechanisms 5 in linkage, which reduces power costs and prevents the pressing assembly 6 and the rotating mechanism 5 from being positioned with the caster body at the same time, reducing the risk of interference.

[0028] In a preferred embodiment of the present invention, the rotating mechanism 5 includes a wrapping fixing plate 503 fixed on the frame 4, a wrapping guide sleeve 504 fixed on the wrapping fixing plate 503, a lifting guide shaft 501 slidably connected in the wrapping guide sleeve 504, and a wrapping lifting plate 505 fixed on the lifting guide shaft 501; a motor 506 is fixed on the wrapping lifting plate 505; a pressure roller 507 is fixed at the output end of the motor 506; and a drive assembly is connected to the wrapping lifting plate 505 to drive the wrapping lifting plate 505 away from or towards the caster positioning column 703. After the motor 506 rotates, it drives the pressure roller 507 to rotate. The drive assembly then conveys the wrapping lifting plate 505 towards the caster positioning post 703, causing the pressure roller 507 to adhere to the caster body with film attached to one end. The motor 506 then drives the pressure roller 507 to rotate, driving the caster body to move and causing it to roll up the film. When the rollup amount exceeds one turn, the drive assembly conveys the wrapping lifting plate 505 away from the caster positioning post 703, and the film is cut by the cutting mechanism 8. Similarly, during heat shrinking of the film, the drive assembly conveys the wrapping lifting plate 505 towards the caster positioning post 703, causing the pressure roller 507 to adhere to the caster body with film wrapped to one end. The motor 506 drives the pressure roller 507 to rotate, driving the caster body to move, ensuring the film on the surface of the caster body is evenly heated. In this structure, the automatic rotation of the casters is achieved through the coordinated movement of the drive assembly and motor 506 during the wrapping and heat shrinking processes.

[0029] In a preferred embodiment of the present invention, the folding assembly comprises a steel cable 11 and a plurality of tension rollers 15; a plurality of tension springs 502 are connected between the rotating mechanism 5 and the frame 4; one end of the steel cable 11 is fixed to one of the rotating mechanisms 5; the other end of the steel cable 11 passes through each of the tension rollers 15 in sequence and is fixedly connected to another rotating mechanism 5; the tension springs 502 keep the steel cable 11 in a taut state, preventing the steel cable 11 from derailing from the tension rollers 15; and the tension springs 502 on both rotating mechanisms 5 keep the two rotating mechanisms 5 moving away from each other. The tension rollers 15 are symmetrically arranged on both sides of the sliding seat 10. Under the force of the tension spring 502, the rotating mechanisms 5 on both sides move away from each other and separate from the surface of the caster body, so that when the turntable 704 rotates, the rotating mechanisms 5 will not obstruct the movement of the caster body. After the linear module drives the sliding seat 10 to move, the sliding seat 10 presses against the middle of the steel cable 11 and folds the steel cable 11. Using the traction force of the steel cable 11 on the rotating mechanisms 5 on both sides, the two rotating mechanisms 5 move closer to each other, and finally the two rotating mechanisms 5 contact the two caster bodies respectively. In this structure, the steel cable 11 and multiple tension rollers 15 are used as the structure to drive the rotating mechanism 5. The structure is simple, easy to maintain, and reduces maintenance costs.

[0030] In a preferred embodiment of the present invention, the sliding seat 10 is provided with a grooved roller 14; the grooved roller 14 of the sliding seat 10 forms a rolling connection with the steel cable 11 by pressing and contacting it, thereby reducing damage to the steel cable 11.

[0031] In a preferred embodiment of the present invention, the pressing assembly 6 includes multiple pressing guide rods 605 fixed on a turntable 704, a pressing guide sleeve 604 slidably connected to the pressing guide rods 605, and a push plate 602 fixed on the pressing guide sleeve 604; a connecting fixing seat 601 and multiple pressing heads 603 are fixed on the push plate 602; a rotating seat 13 is rotatably connected to the connecting fixing seat 601; one end of the swing rod assembly 12 is hinged to the rotating seat 13; the other end of the swing rod assembly 12 is hinged to the sliding seat 10; The rotating seat 13 enables the rocker arm assembly 12 to rotate with the push plate 602. Therefore, when the turntable 704 and the caster body rotate together around the axis of the turntable 704, the pressure guide rod 605, push plate 602, and pressure head 603 rotate through the pressure guide rod 605. The rocker arm assembly 12 swings around the sliding seat 10. When the axis of the sliding seat 10, the rocker arm assembly 12, and the rotating seat 13 are aligned, the distance between the rotating seat 13 and the sliding seat 10 is the overall length of the rocker arm assembly 12. In this state, the push plate 602 is pushed to its maximum stroke, and the pressure head 603 presses the caster body tightly. When the turntable 704 drives the caster body to rotate, it ensures that the caster body will not come loose from the caster positioning pin 703. As the sliding seat 10 continues to move, the rocker arm assembly 12 swings, and the distance between the sliding seat 10 and the rotating seat 13 gradually decreases, causing the rocker arm assembly 12 to pull the push plate 602 away from the caster body. Using the rocker arm assembly 12 as the power structure makes the maximum stroke easy to control and reduces the risk of caster body deformation.

[0032] In a preferred embodiment of the present invention, the rocker arm assembly 12 comprises an outer sleeve 1203 hinged at one end to a rotating seat 13 and an inner rod 1201 slidably connected at one end inside the outer sleeve 1203; the other end of the inner rod 1201 is hinged to the sliding seat 10; an external thread is provided on the surface of the inner rod 1201; a threaded hole is provided on the side wall of the outer sleeve 1203; a screw 1202 is threaded into the threaded hole; the end of the screw 1202 abuts against the external thread of the inner rod 1201. The screw 1202 has a tapered end. Rotating the screw 1202 loosens it from the external thread, allowing the inner rod 1201 to slide on the outer sleeve 1203, thus adjusting the total length of the rocker arm assembly 12. This ensures that the pressure head 603 can press against the caster body when the pressure assembly 6 is at its maximum stroke.

[0033] In a preferred embodiment of the present invention, a fixture fixing plate 701 is fixed on the caster positioning column 703; the fixture fixing plate 701 is provided with two parallel first strip grooves 70101; the turntable 704 is provided with a plurality of first threaded holes 70401; a bolt is provided in each first strip groove 70101; the bolt passes through the first strip groove 70101 and is threaded into the first threaded hole 70401, thereby fixing the fixture fixing plate 701 on the turntable 704; Loosening the bolts allows adjustment of the radial position of the fixture fixing plate 701 on the turntable 704, enabling adjustment of the distance between the two caster positioning pins 703, which can be used to process caster bodies of different diameters.

[0034] In a preferred embodiment of the present invention, the cutting mechanism 8 includes a cutting ejector cylinder 801 fixed at one end to the frame 4 and a push plate 802 slidably connected to the frame 4; a rear pressure bracket 804 and a cutting cylinder 807 are fixed on the push plate 802; an electric heating component 803 is fixed to the piston rod end of the cutting cylinder 807; an electric heating wire 806 is provided on the electric heating component 803; a second strip groove 80201 is provided on the rear pressure bracket 804 of the push plate 802; a plurality of second threaded holes 80401 are provided on the rear pressure bracket 804; bolts pass through the second strip groove 80201 and are threadedly connected to the second threaded holes 80401; a rear pressure roller 805 is rotatably connected to the rear pressure bracket 804; and the piston rod end of the cutting ejector cylinder 801 is fixedly connected to the push plate 802. The heating element 803 enables the heating wire 806 to heat up, which is no different from the prior art, so it will not be described in detail. The heating element 803 heats up the heating wire 806 to cut the film material. The cutting and ejecting cylinder 801 is used to push the push plate 802 to slide, so that the rear pressure roller 805 presses the film tightly on the outer surface of the caster body, while bringing the heating wire 806 closer to the film cutting position. The cutting cylinder 807 moves further, so that the heating wire 806 continues to move towards the film, cutting the film.

[0035] Depending on the diameter of the caster body, the position of the rear pressure bracket 804 on the push plate 802 can be adjusted after loosening the bolts.

[0036] The beneficial effects of this invention are: 1. Automated operation, improved efficiency and quality, and reduced labor intensity: The caster coating is automated, eliminating the need for manual winding and heating, improving coating efficiency, reducing labor intensity, and ensuring the flatness and firmness of the coating, thus stabilizing product quality.

[0037] 2. Dual-station collaboration, high efficiency and film protection against contamination: Dual caster positioning columns and dual rotating mechanisms work together with a turntable to achieve dual-station alternation, separating each process, avoiding hot air damage to the film material, reducing film contamination, and simultaneously wrapping and heat shrinking, greatly improving efficiency.

[0038] 3. Reasonable structural linkage, cost reduction, stable operation and reduced maintenance: The lifting and lowering of the single linear module linkage pressing component and rotating mechanism reduces the number of power components and lowers costs; avoids component interference, improves operational stability and reduces maintenance costs.

[0039] 4. High adaptability and improved equipment versatility: The position of the fixture fixing plate, the rear pressure bracket and the length of the swing arm assembly can be adjusted to accommodate casters of different specifications and meet diverse wrapping needs.

[0040] The above description is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included in the scope of this patent application.

Claims

1. An automatic wrapping and heat-shrinking equipment, characterized in that: Includes a frame (4); the frame (4) is provided with a film unwinding mechanism (1), a heat shrinking mechanism (2), a wrapping station (7) and a cutting mechanism (8); The coating station (7) is equipped with a caster positioning column (703) that is rotatably connected to the frame (4). The feature is that: a rotating mechanism (5) is provided on the frame (4); the rotating mechanism (5) is located between the film unwinding mechanism (1) and the cutting mechanism (8); the rotating mechanism (5) is used to drive the caster body to rotate and to wrap the film material around the outer surface of the caster body.

2. The automatic wrapping and heat-shrinking equipment according to claim 1, characterized in that: The coating station (7) also includes a turntable mechanism; the turntable mechanism is provided with a turntable (704); there are two caster positioning posts (703); the caster positioning posts (703) are distributed in a circle on the turntable (704); there are two rotating mechanisms (5); the two rotating mechanisms (5) are respectively provided on both sides of the turntable mechanism; One of the caster positioning posts (703) is located between the film unwinding mechanism (1) and the cutting mechanism (8); the heat shrinking mechanism (2) is a hot air blower; the air outlet of the hot air blower is located opposite the other caster positioning post (703).

3. The automatic wrapping and heat-shrinking equipment according to claim 2, characterized in that: A pressing assembly (6) is provided between the two rotating mechanisms (5); a linear module is provided on the frame (4); a sliding seat (10) is connected to the linear module; a swing arm assembly (12) is rotatably connected to the pressing assembly (6) on the sliding seat (10); one end of the pressing assembly (6) is fixed on the turntable (704); a folding assembly is provided between the two rotating mechanisms (5); after the sliding seat (10) squeezes the folding assembly, the two rotating mechanisms (5) move closer to each other. In this state, the sliding seat (10) pulls the pressing assembly (6) away from the caster positioning column (703) through the swing arm assembly (12); after the sliding seat (10) releases the pressure on the folding assembly, the two rotating mechanisms (5) move away from each other. In this state, the pressing assembly (6) is pushed out towards the caster positioning column (703) through the swing arm assembly (12).

4. The automatic wrapping and heat-shrinking equipment according to claim 2, characterized in that: The rotating mechanism (5) includes a wrapping fixing plate (503) fixed on the frame (4), a wrapping guide sleeve (504) fixed on the wrapping fixing plate (503), a lifting guide shaft (501) slidably connected in the wrapping guide sleeve (504), and a wrapping lifting plate (505) fixed on the lifting guide shaft (501); a motor (506) is fixed on the wrapping lifting plate (505); a pressure roller (507) is fixed at the output end of the motor (506); and a drive assembly is connected to the wrapping lifting plate (505) to drive the wrapping lifting plate (505) away from or closer to the caster positioning column (703).

5. The automatic wrapping and heat-shrinking equipment according to claim 3, characterized in that: The folding assembly consists of a steel cable (11) and multiple tension rollers (15); multiple tension springs (502) are connected between the rotating mechanism (5) and the frame (4); one end of the steel cable (11) is fixed on one of the rotating mechanisms (5); the other end of the steel cable (11) passes around each tension roller (15) in sequence and is fixedly connected to another rotating mechanism (5).

6. The automatic wrapping and heat-shrinking equipment according to claim 5, characterized in that: The sliding seat (10) is provided with a grooved roller (14).

7. The automatic wrapping and heat-shrinking equipment according to claim 3, characterized in that: The pressing assembly (6) includes multiple pressing guide rods (605) fixed on the turntable (704), a pressing guide sleeve (604) slidably connected to the pressing guide rods (605), and a push plate (602) fixed on the pressing guide sleeve (604); a connecting fixing seat (601) and multiple pressing heads (603) are fixed on the push plate (602); a rotating seat (13) is rotatably connected to the connecting fixing seat (601); one end of the swing rod assembly (12) is hinged to the rotating seat (13); the other end of the swing rod assembly (12) is hinged to the sliding seat (10).

8. The automatic wrapping and heat-shrinking equipment according to claim 7, characterized in that: The rocker arm assembly (12) consists of an outer sleeve (1203) hinged at one end to a rotating seat (13) and an inner rod (1201) slidably connected at one end inside the outer sleeve (1203); the other end of the inner rod (1201) is hinged to the sliding seat (10); the surface of the inner rod (1201) is provided with external threads; the side wall of the outer sleeve (1203) is provided with threaded holes; a screw (1202) is connected to the internal thread of the threaded holes; the end of the screw (1202) abuts against the external thread of the inner rod (1201).

9. The automatic wrapping and heat-shrinking equipment according to claim 2, characterized in that: A fixture fixing plate (701) is fixed on the caster positioning column (703); two parallel first strip grooves (70101) are provided on the fixture fixing plate (701); a plurality of first threaded holes (70401) are provided on the turntable (704); a bolt is provided in each first strip groove (70101); the fixture fixing plate (701) is fixed on the turntable (704) by threading the bolt through the first strip groove (70101) and connecting it to the first threaded hole (70401).

10. The automatic wrapping and heat-shrinking equipment according to claim 1, characterized in that: The cutting mechanism (8) includes a cutting ejector cylinder (801) fixed at one end to the frame (4) and a push plate (802) slidably connected to the frame (4); a rear pressure bracket (804) and a cutting cylinder (807) are fixed on the push plate (802); an electric heating component (803) is fixed to the piston rod end of the cutting cylinder (807); an electric heating wire (806) is provided on the electric heating component (803); a second strip groove (80201) is provided on the rear pressure bracket (804) of the push plate (802); a plurality of second threaded holes (80401) are provided on the rear pressure bracket (804); a bolt passes through the second strip groove (80201) and is threadedly connected to the second threaded hole (80401); a rear pressure roller (805) is rotatably connected to the rear pressure bracket (804); the piston rod end of the cutting ejector cylinder (801) is fixedly connected to the push plate (802).

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