Longitudinal stretching machine for film production line

Abstract

The utility model discloses a film production line longitudinal stretching machine, and belongs to the technical field of film production. The device mainly comprises a base, two sets of mounting plates are arranged on the base, and moving grooves are formed in the mounting plates; the adjusting assembly is mounted on the mounting plate and comprises a stretching roller for stretching the PVC floor film, two groups of sliding sleeves for driving the stretching roller to move, two groups of screw rods for driving the sliding sleeves to linearly move, and two groups of second gears for driving the two groups of screw rods to rotate; the two sets of racks drive the two sets of second gears to rotate correspondingly, the two sets of racks are oppositely arranged in parallel, and the first gear is used for driving the two sets of racks to move linearly. According to the longitudinal stretching machine for the thin film production line, by means of precise cooperation of transmission assemblies such as the gear, the rack and the lead screw, synchronous lifting of the two ends of the stretching roller is guaranteed, the problem that due to inclination of the stretching roller, stress of a PVC floor film is uneven is solved, the produced floor film is uniform in thickness and stable in tensile strength, and the product quality is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of film production, in particular to a longitudinal pulling machine for a film production line. BACKGROUND

[0002] In the field of building decoration and home decoration, PVC floor has a continuously increasing market share due to its low cost, convenient installation, waterproofness and wear resistance. As a key component of PVC floor, the quality of PVC floor film directly affects the performance and market competitiveness of PVC floor. In the production process of PVC floor film, a longitudinal pulling machine plays an indispensable role, and its performance determines the quality and production efficiency of the floor film.

[0003] For example, the patent with the publication number CN216658893U discloses a film longitudinal pulling machine, which comprises an outer body, threaded holes, threaded columns, connecting seats, rolling bearings, stretching rollers, deflection rollers, fan frames and cold fans. The spacing between the stretching rollers and the deflection rollers can be adjusted, and the machine is suitable for different film tension requirements.

[0004] During the actual operation of the film longitudinal pulling machine, the rationality of the spacing adjustment operation between the stretching rollers and the deflection rollers has a decisive influence on the film stretching quality. The device relies on rotating threaded columns to adjust the spacing. Since the two threaded columns are spaced apart from each other and far apart, it is difficult for a single worker to rotate the two threaded columns synchronously. This asynchronous rotation causes the stretching rollers to be tilted, with one end being higher and the other end being lower. This results in an imbalance in the tension on both sides of the film during the stretching process. This not only reduces the film stretching quality, but also causes the thickness of the stretched film to be inconsistent and the performance to be unstable, directly affecting the quality of the product. If two workers are arranged to operate simultaneously, although the synchronization can be ensured to a certain extent, the problem of rising labor costs will be caused. Moreover, the operation of multiple people makes the entire operation process more complex, reducing the production efficiency. Therefore, it is necessary to provide a film production line longitudinal pulling machine to solve the above problems.

[0005] It should be noted that the above information disclosed in the background section of the present application is only used to understand the background technology of the concept of the present application, and therefore, it can contain information that does not constitute prior art. SUMMARY

[0006] Based on the above problems existing in the prior art, the present application solves the problem of providing a film production line longitudinal pulling machine, which solves the problem of adjusting the spacing between the stretching rollers and the deflection rollers by rotating the threaded columns that are far apart, which is difficult for a single person to operate synchronously, and the operation of two people increases the cost and complexity.

[0007] The technical scheme adopted by the present application to solve its technical problems is: a film production line longitudinal pulling machine, comprising a base, the base has two groups of mounting plates, the mounting plates are provided with moving grooves; an adjusting assembly is installed on the mounting plate, the adjusting assembly comprises a stretching roller for stretching the PVC floor film, two groups of sliding sleeves for driving the stretching roller to move, two groups of lead screws for driving the sliding sleeves to move linearly, two groups of second gears for driving the two groups of lead screws to rotate, two groups of racks for driving the two groups of second gears to rotate, the two groups of racks are arranged in parallel, and a first gear is used to drive the two groups of racks to move linearly.

[0008] Further, one side of the two groups of mounting plates is provided with a notch groove, and a material placing roller is placed between the two groups of notch grooves.

[0009] Further, a deflection roller is installed between the two groups of mounting plates through a bearing, and the deflection roller is located at the upper end of one side of the material placing roller.

[0010] Further, a material collecting roller is installed between the two groups of mounting plates through a bearing, and a driving motor is installed on one side of one group of mounting plates, and the output end of the driving motor is connected with the material collecting roller.

[0011] Further, the adjusting assembly comprises a connecting plate installed on the mounting plate, a fixed rod is movably penetrated through the center of the connecting plate, a rolling bearing is installed at one end of the fixed rod, and the stretching roller is rotatably installed between the two groups of rolling bearings.

[0012] Further, a protective cover is installed between the two groups of connecting plates, a rotating shaft is installed on the center bearing of the protective cover, the rotating shaft is penetrated through the protective cover, a rotating disc is installed on one end of the rotating shaft and attached to the upper surface of the protective cover, and the first gear is installed on the other end of the rotating shaft.

[0013] Further, the two groups of racks are slidingly installed on the inner walls of the protective cover, the two groups of racks are engaged with the first gear, the upper end of the rack is defined as the first rack, the lower end of the rack is defined as the second rack, and the side of the two groups of connecting plates is provided with a moving unit, the moving unit on the left side is defined as the first moving unit, and the moving unit on the right side is defined as the second moving unit.

[0014] Further, the moving unit comprises a side joint plate installed on the side of the connecting plate, a lead screw is installed on the bearing of the side joint plate, one end of the lead screw is penetrated through the side joint plate, two groups of guide rods are installed on the side joint plate, a sliding sleeve is threadedly connected on the lead screw, a fixed ring is installed on the side of the sliding sleeve, and the fixed ring is fixedly sleeved on the fixed rod.

[0015] The beneficial effects of the present application are: the film production line longitudinal stretching machine provided by the present application ensures synchronous lifting of the two ends of the stretching roller through precise cooperation of gear, rack, screw rod and other transmission components, avoids the problem of uneven stress on the PVC floor film caused by the inclination of the stretching roller, and produces floor film with uniform thickness and stable tensile strength, thereby improving product quality.

[0016] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The present application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings accompanying the specification of the present application serve to provide further understanding of the present application, the illustrative embodiments thereof and the explanation thereof, and do not constitute an improper limitation of the present application.

[0018] In the drawings:

[0019] Figure 1 is a schematic diagram of the overall film production line longitudinal stretching machine in the present application;

[0020] Figure 2 is an exploded schematic diagram of Figure 1 ;

[0021] Figure 3 is a partial structure schematic diagram of Figure 1 ;

[0022] Figure 4 is an enlarged view of A of Figure 3 ;

[0023] Figure 5 is an enlarged view of B of Figure 2 ;

[0024] In the drawings, various reference signs refer to:

[0025] 1, fixed component; 11, base; 12, mounting plate; 13, notch groove; 14, feeding roller; 15, deflection roller; 16, take-up roller; 17, drive motor; 18, moving groove; 2, heating component; 21, support plate; 22, heating plate; 23, heating coil; 3, adjusting component; 31, rolling bearing; 32, spring; 33, fixed rod; 34, connecting plate; 36, protective cover; 37, rotating shaft; 38, rotating disc; 39, first gear; 310, rack; 311, side plate; 312, guide rod; 313, lead screw; 314, sliding sleeve; 315, fixed ring; 316, second gear; 4, cooling component; 41, fan frame; 42, fan body. DETAILED DESCRIPTION

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0028] like Figures 1-5 As shown, this application provides a longitudinal stretching machine for a film production line, including a fixing component 1. The fixing component 1 includes a base 11, on which two sets of mounting plates 12 are fixedly mounted. On the side of the two sets of mounting plates 12 that are close to each other, notches 13 are provided. A feeding roller 14 is placed between the two sets of notches 13. A PVC floor film is wound on the feeding roller 14. A guide roller 15 is bearing-mounted between the two sets of mounting plates 12. The guide roller 15 is located at the upper end of one side of the feeding roller 14, so that one end of the PVC floor film is suitable for adhering to the upper surface of the guide roller 15.

[0029] A take-up roller 16 is mounted on a bearing between two sets of mounting plates 12, and a drive motor 17 is fixedly mounted on the side of one set of mounting plates 12. The output end of the drive motor 17 is connected to the take-up roller 16 to drive the take-up roller 16 to rotate so as to wind up the stretched PVC floor film.

[0030] To adjust the stretch of PVC flooring film, such as Figures 2-5 As shown, a moving groove 18 is provided on both sets of mounting plates 12, and an adjustment component 3 is installed on both sets of mounting plates 12. The adjustment component 3 includes a connecting plate 34 fixedly installed on the mounting plate 12, and a fixed rod 33 is movably passed through the center of the connecting plate 34. A rolling bearing 31 is fixedly installed at one end of the fixed rod 33, and a tension roller (not shown in the figure) is rotatably installed between the two sets of rolling bearings 31.

[0031] A protective cover 36 is fixedly installed between the two sets of connecting plates 34. A rotating shaft 37 is installed on the central bearing of the protective cover 36. The rotating shaft 37 passes through the protective cover 36. A turntable 38 is fixedly installed at one end of the rotating shaft 37 and attached to the upper surface of the protective cover 36. The turntable 38 is suitable for driving the rotating shaft 37 to rotate. At the same time, a first gear 39 is fixedly installed at the other end of the rotating shaft 37.

[0032] Meanwhile, two sets of gear racks 310 are slidably installed on the inner walls of the protective cover 36, and the two sets of gear racks 310 are engaged with the first gear 39 and are arranged in parallel, wherein the gear rack 310 at the upper end is defined as a first gear rack, and the gear rack 310 at the lower end is defined as a second gear rack (see Figure 2 the enlarged view), and the side surfaces of the two sets of connecting plates 34 are provided with moving units, wherein the moving unit at the left side is defined as a first moving unit, and the moving unit at the right side is defined as a second moving unit (see Figure 2 );

[0033] The moving unit comprises a side plate 311 fixedly installed on the side surface of the connecting plate 34, the side plate 311 is concave, a lead screw 313 is bearingly installed on the side plate 311, one end of the lead screw 313 penetrates through the side plate 311, two sets of guide rods 312 are fixedly installed on the side plate 311 at positions on both sides of the lead screw 313, and a sliding sleeve 314 is threadedly connected to the lead screw 313, the sliding sleeve 314 movably sleeves the two sets of guide rods 312, and the sliding sleeve 314 is adapted to linearly slide on the two sets of guide rods 312 along with the rotation of the lead screw 313;

[0034] A fixing ring 315 is fixedly installed on the side surface of the sliding sleeve 314, the fixing ring 315 fixedly sleeves the fixing rod 33, so that the fixing rod 33 is synchronously moved along with the movement of the sliding sleeve 314, and the movement of the fixing rod 33 can drive the stretching roller to move up and down to adjust the tension on the PVC floor film;

[0035] In order to drive the stretching roller to move up and down, as shown in Figures 2-5 , a second gear 316 is fixedly installed on one end of the lead screw 313 of the first moving unit and the second moving unit, wherein the second gear 316 of the first moving unit is engaged with the second gear 316 of the second moving unit (see Figure 2 );

[0036] It should be noted that one end of the PVC floor film wound on the unwinding roller 14 first passes over the upper end of the deflection roller 15, then passes over the lower surface of the stretching roller, and finally is wound on the winding roller 16;

[0037] The fixed assembly 1 of the PVC flooring film production line's longitudinal stretching machine constitutes the main frame of the equipment. The feeding roller 14 is placed between the notches 13 of two sets of mounting plates 12 on the base 11, and PVC flooring film is wound onto it. One end of the PVC flooring film first adheres to the upper surface of the guide roller 15, and with the guidance of the guide roller 15, changes direction and passes through the lower surface of the stretching roller, finally winding onto the take-up roller 16. The drive motor 17 is mounted on the side of one set of mounting plates 12. The motor's operation drives the take-up roller 16 to rotate, continuously winding up the stretched PVC flooring film, achieving continuous material flow.

[0038] Rotating the turntable 38 causes the fixed shaft 37 to rotate at the center of the protective cover 36. The first gear 39 at the other end of the shaft 37 rotates accordingly, meshing with the first and second racks 310 on both sides of the inner wall of the protective cover 36. The rotation of the first gear 39 causes the two sets of racks 310 to slide parallel to each other along the inner wall of the protective cover 36.

[0039] The sliding of the rack 310 drives the second gear 316, which meshes with it, to rotate. The second gear 316 is fixed to one end of the lead screw 313, causing the lead screw 313 to rotate on the side plate 311. When the lead screw 313 rotates, the sliding sleeve 314 slides linearly along the guide rod 312. When the sliding sleeve 314 moves, it drives the fixed rod 33 to move synchronously, which in turn drives the stretching roller installed between the rolling bearings 31 at the ends of the two sets of fixed rods 33 to move up and down, adjusting the distance between the stretching roller and the PVC floor film, changing the magnitude of the tension on the PVC floor film, and meeting different stretching process requirements.

[0040] To further improve the tensile effect on PVC flooring membranes, such as Figure 3 As shown, a heating assembly 2 is connected between two sets of mounting plates 12. The heating assembly 2 is located in front of the feeding roller 14. The heating assembly 2 includes a bracket plate 21 fixedly installed between the mounting plates 12. A heating plate 22 is connected between the two sets of bracket plates 21. A heating coil 23 is fixedly installed on the heating plate 22. The heating coil 23 is adapted to be connected to an external device to be energized. The heating coil 23 is positioned towards the PVC floor film wound on the feeding roller 14.

[0041] The heating coil 23 is connected to an external power supply. After the power is turned on, current flows through the heating coil 23. Based on the thermal effect of the current, the heating coil 23 quickly generates heat. The heat is transferred to the heating plate 22, which is closely connected to it, causing the overall temperature of the heating plate 22 to rise and forming a stable heat source.

[0042] The heating plate 22, with its temperature rising, transfers heat to the PVC flooring film wound on the unloading roller 14 through thermal radiation. This thermal radiation precisely delivers heat to the surface of the PVC flooring film without direct contact, causing the film temperature to gradually increase. Simultaneously, the molecules within the PVC flooring film gain energy and begin to accelerate, weakening the intermolecular forces and thus enhancing the plasticity of the PVC flooring film.

[0043] To cool the heated and stretched PVC flooring film for easier winding, such as... Figure 3 As shown, a cooling assembly 4 is installed on two sets of mounting plates 12. The cooling assembly 4 is located on one side of the receiving roller 16. The cooling assembly 4 includes a fan frame 41 connected and installed between the two sets of mounting plates 12. The fan frame 41 is a frame structure. Multiple fan bodies 42 are fixedly installed on the fan frame 41. The air outlet of the fan body 42 faces the PVC floor film.

[0044] When the PVC floor film is heated and stretched by the heating component 2 and is about to enter the take-up roller 16 for winding, the cooling component 4 starts to operate. The cooling component 4 is mounted on two sets of mounting plates 12 and located on one side of the take-up roller 16. The fan frame 41 is connected between the two sets of mounting plates 12, and multiple fan bodies 42 are fixed on the fan frame 41. The power supply to the fan bodies 42 is turned on to start them running.

[0045] After the fan body 42 is started, its internal motor drives the fan blades to rotate at high speed. The rotation of the fan blades causes the air to flow rapidly and blow out from the air outlet of the fan body 42, forming a directional, high-speed airflow. Since the air outlet faces the PVC floor membrane, the airflow acts directly on the surface of the PVC floor membrane.

[0046] The blown-out air, at a relatively low temperature, exchanges heat with the warmer PVC flooring membrane. The heat on the PVC flooring membrane surface is quickly carried away by the flowing air, accelerating cooling through heat conduction and convection. The cooled PVC flooring membrane exhibits more stable physical properties, and its molecular structure is re-fixed, effectively preventing problems such as adhesion and deformation caused by excessive temperature during winding. This ensures smooth winding of the PVC flooring membrane and guarantees the quality of the finished product.

[0047] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A film line stenter characterized by: The utility model relates to a PVC floor film stretching machine, which comprises: a base (11) having two groups of mounting plates (12) with moving grooves (18) formed on the mounting plates (12); an adjusting assembly (3) mounted on the mounting plates (12), the adjusting assembly (3) comprising stretching rollers for stretching PVC floor film, two groups of sliding sleeves (314) for moving the stretching rollers, two groups of lead screws (313) for driving the sliding sleeves (314) to move linearly, two groups of second gears (316) for driving the two groups of lead screws (313) to rotate, and two groups of racks (310) for respectively driving the two groups of second gears (316) to rotate, the two groups of racks (310) being arranged in parallel to each other, and a first gear (39) for driving the two groups of racks (310) to move linearly.

2. The film line stenter according to claim 1, characterized in that: The two groups of mounting plates (12) are provided with notched grooves (13) on the sides close to each other, and the notched grooves (13) are arranged to accommodate a feeding roller (14) with PVC floor film wound thereon.

3. The film line stenter according to claim 2, characterized in that: A turning roller (15) is mounted on the base (11) by bearings between the two groups of mounting plates (12), and the turning roller (15) is located at the upper end of the side of the feeding roller (14).

4. The film line stenter according to claim 3, characterized in that: A collecting roller (16) is mounted on the base (11) by bearings between the two groups of mounting plates (12), and a driving motor (17) is mounted on the side of one of the mounting plates (12), with the output end of the driving motor (17) connected to the collecting roller (16).

5. The film line stenter according to claim 4, characterized in that: The adjusting assembly (3) comprises a connecting plate (34) mounted on the mounting plates (12), a fixed rod (33) movably penetrating the center of the connecting plate (34), a rolling bearing (31) mounted on one end of the fixed rod (33), and the stretching rollers rotatably mounted between the two groups of rolling bearings (31).

6. The film line machine according to claim 5, characterized in that: A protective cover (36) is mounted between the two groups of connecting plates (34), a rotating shaft (37) is mounted on the center bearing of the protective cover (36), the rotating shaft (37) penetrates the protective cover (36), a rotating disc (38) is mounted on one end of the rotating shaft (37) and attached to the upper surface of the protective cover (36), and the first gear (39) is mounted on the other end of the rotating shaft (37).

7. The film line machine according to claim 6, characterized in that: The two groups of racks (310) are slidably mounted on the inner walls of the protective cover (36), the two groups of racks (310) are engaged with the first gear (39), the upper rack (310) is defined as the first rack, the lower rack (310) is defined as the second rack, and a moving unit is mounted on the side of each of the two groups of connecting plates (34), the moving unit on the left side is defined as the first moving unit, and the moving unit on the right side is defined as the second moving unit.

8. The film line machine according to claim 7, characterized in that: The mobile unit comprises a side connecting plate (311) installed on the side of the connecting plate (34), a screw rod (313) is bearingly installed on the side connecting plate (311), one end of the screw rod (313) penetrates through the side connecting plate (311), two groups of guide rods (312) are installed on the side connecting plate (311), a sliding sleeve (314) is threadedly connected on the screw rod (313), a fixing ring (315) is installed on the side of the sliding sleeve (314), and the fixing ring (315) is fixedly sleeved on the fixing rod (33).

9. The film line machine according to claim 8, characterized in that: The second gear (316) is installed at one end of the screw rod (313) of the first mobile unit and the second mobile unit, the second gear rack is engaged with the second gear (316) of the first mobile unit, and the first gear rack is engaged with the second gear (316) of the second mobile unit.

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