Ultrathin PVC film stretching device

Abstract

The utility model discloses an ultrathin PVC (polyvinyl chloride) film stretching device, which relates to the technical field of stretching devices, and comprises a stretching mechanism, a moving mechanism and a heating mechanism, the moving mechanism comprises supporting seats, the two supporting seats are respectively arranged on the lower surface of a workbench, an inner groove is formed in each supporting seat, the device is provided with the moving mechanism, and the heating mechanism is arranged on the moving mechanism. During movement, a worker only needs to rotate the crank to drive the four rollers to extend out of the round opening through the assembly to support the whole device, the worker can move the device through the rollers, movement of the device becomes simple, meanwhile, after movement is completed, the rollers are retracted into the inner grooves, the whole device is supported through the supporting base, and the rollers do not need to be used for supporting the device for a long time; and the device is further provided with a heating mechanism, and the heating mechanism is used for heating the film entering the stretching mechanism to move, so that the temperature of the film is increased, the stretching difficulty of the film is reduced, and the stretching effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stretching devices, in particular to a stretching device for ultra-thin PVC films. Background Art

[0002] PVC film is a kind of polymer plastic film, which is currently mainly used in fields such as covering cloth, home decoration film, laminated advertising cloth, vehicle body color change and advertising promotion, etc., to achieve the effects of covering, decoration and advertising promotion. Indoor decoration materials at home and abroad have also widely used PVC as the main raw material to replace traditional textile materials. Such plastic products have the characteristics of low price, easy cleaning, high fire resistance level, recyclability, etc. However, people hope that the PVC film is thinner and has better light transmittance to enhance its beauty, so the film needs to be stretched, and thus a film stretching device is required.

[0003] For example, the patent network discloses a film stretching machine for ultra-thin PVC films (publication number: CN104999655A). The stretching structures of this device are all installed on the frame, so when the device is moved, it needs to be carried by workers. However, most of the device is made of metal, so it is difficult to carry. If rollers are installed under the frame, although it is convenient for the device to move, the overall weight of the device acts on the rollers, which will cause too much force on the rollers and may cause the rollers to be damaged after a long time. Therefore, those skilled in the art have proposed a stretching device for ultra-thin PVC films. Content of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides a stretching device for ultra-thin PVC films. A moving mechanism is arranged on this device to help workers move the device, solving the problem that the movement of the device in the above background can only rely on carrying.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: A stretching device for ultra-thin PVC films, a stretching mechanism, which is used for the movement of the film and simultaneously conducts stretching operations on it;

[0006] A moving mechanism, on which rollers that can be lifted are arranged to help workers move the entire device;

[0007] The moving mechanism includes support seats. Two of the support seats are respectively installed on the lower surface of the workbench. An inner groove is formed inside each support seat. A unidirectional screw is rotatably installed at the center of the inner part of each inner groove. A second threaded seat is arranged on each unidirectional screw. Side plates are installed on both sides of each second threaded seat. Rollers are installed on the lower surface of each side plate. A cavity is formed above the inner groove inside each support seat. A rotating rod is rotatably installed jointly in the two cavities. The upper end of each unidirectional screw extends into the cavity and is equipped with a first bevel gear. A second bevel gear meshing with the first bevel gear is installed on the surface of the rotating rod inside each cavity.

[0008] A heating mechanism, which is used to heat the film moving on the stretching mechanism.

[0009] As a further technical solution of the present utility model, the moving mechanism further includes a hand crank. The hand crank is installed at one end of the rotating rod extending outside the support seat. A circular opening aligned with each roller is formed on the lower surface of each support seat directly below each roller.

[0010] As a further technical solution of the present utility model, the stretching mechanism includes a workbench. Two moving grooves are correspondingly formed on the upper surface of the workbench. A bidirectional screw is rotatably installed jointly between the two moving grooves. A first threaded seat is arranged on the threaded surface of the bidirectional screw inside each moving groove. A motor is installed on one side of the moving groove on the side surface of the workbench. The driving end of the motor extends into the moving groove and is fixedly connected to one end of the bidirectional screw.

[0011] As a further technical solution of the present utility model, the stretching mechanism further includes mounting plates. The two mounting plates are respectively installed on the upper surfaces of the two first threaded seats. A lower conveying structure is installed on the upper surface of each first threaded seat. An electric push rod is installed on the upper surface of each first threaded seat on one side of the lower conveying structure. An upper conveying structure is installed above the lower conveying structure at the upper end of each electric push rod.

[0012] As a further technical solution of the present utility model, the heating mechanism includes rectangular plates. The two rectangular plates are correspondingly installed on the other side surface of the workbench. A flow dividing pipe is installed between the two rectangular plates. A number of uniformly distributed jet nozzles facing upward are installed on the surface of the flow dividing pipe.

[0013] As a further technical solution of the present utility model, the heating mechanism further includes a heating box. The heating box is installed on the other side surface of the workbench and is located below the flow dividing pipe. A number of uniformly distributed air pumps are arranged inside the heating box. A heating wire with an output end extending into the heating box is installed on one side of the heating box. One end of the flow dividing pipe is installed with a connecting pipe. One end of the connecting pipe extends into the heating box.

[0014] Beneficial effects

[0015] The utility model provides a stretching device for ultra-thin PVC films. Compared with the prior art, the following beneficial effects are achieved:

[0016] 1. A stretching device for ultra-thin PVC films. The device is provided with a moving mechanism. When moving, only need to rotate the crank, and drive four rollers to extend from the round opening through the assembly to support the whole device. The staff can use the rollers to move the device, making the movement of the device simple. At the same time, after the movement is completed, the rollers are retracted into the inner groove, and the support base supports the whole device, without the need to use the rollers to support the device for a long time, thus extending the service life of the rollers.

[0017] 2. A stretching device for ultra-thin PVC films. The device is also provided with a heating mechanism, which is used to heat the film moving on the stretching mechanism, so as to increase the temperature of the film itself, reduce the stretching difficulty of the film, and improve the stretching effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a stretching device for ultra-thin PVC films;

[0019] Figure 2 It is a cross-sectional view of a stretching device for ultra-thin PVC films;

[0020] Figure 3 It is a cross-sectional view of the moving mechanism of a stretching device for ultra-thin PVC films;

[0021] Figure 4 For Figure 2 The enlarged view of part A in

[0022] Figure 5 It is a cross-sectional view of the heating mechanism of a stretching device for ultra-thin PVC films.

[0023] In the figure: 1, workbench; 2, moving groove; 3, bidirectional screw; 4, motor; 5, mounting plate; 6, lower conveying structure; 7, electric push rod; 8, upper conveying structure; 9, support base; 10, inner groove; 11, unidirectional screw; 12, second threaded seat; 13, side plate; 14, roller; 15, cavity; 16, rotating rod; 17, first bevel gear; 18, second bevel gear; 19, round opening; 20, crank; 21, rectangular plate; 22, shunt pipe; 23, air nozzle; 24, heating box; 25, air pump; 26, heating wire; 27, connecting pipe; 28, first threaded seat. DETAILED DESCRIPTION OF THE INVENTION

[0024] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant content and are not intended to limit the present disclosure. Additionally, it should be noted that for the sake of description, only parts related to the present disclosure are shown in the drawings.

[0025] It should be noted that, without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other. The technical solutions of the present disclosure will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0026] Unless otherwise specified, the exemplary embodiments / examples shown are to be understood as providing exemplary features of various details of some ways in which the technical concept of the present disclosure can be implemented in practice. Therefore, unless otherwise specified, the features of various embodiments / examples can be additionally combined, separated, interchanged, and / or rearranged without departing from the technical concept of the present disclosure.

[0027] In the drawings, cross-hatching and / or shading are generally used to make the boundaries between adjacent components clear. Thus, unless stated otherwise, the presence or absence of cross-hatching or shading does not convey or imply any preference or requirement regarding the specific material, material properties, dimensions, proportions, commonality between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. Additionally, in the drawings, for the sake of clarity and / or descriptive purposes, the dimensions and relative dimensions of the components may be exaggerated. When the exemplary embodiments can be implemented differently, the specific process sequences may be performed in a different order than described. For example, two consecutively described processes may be performed substantially simultaneously or in an order opposite to the described order. Moreover, the same reference numerals denote the same components.

[0028] When a component is referred to as being "on" or "above" another component, "connected to" or "coupled to" another component, the component can be directly on the other component, directly connected to or directly coupled to the other component, or there may be intermediate components. However, when the component is referred to as being "directly on" another component, "directly connected to" or "directly coupled to" another component, there are no intermediate components. For this reason, the term "connected" can refer to a physical connection, an electrical connection, etc., and may or may not have intermediate components.

[0029] For descriptive purposes, the present disclosure may use spatial relative terms such as "under", "below", "beneath", "lower", "above", "upper", "on", "higher", and "side (e.g., as in "sidewall")" to describe the relationship of one component to another (other) component as shown in the figures. In addition to the orientation depicted in the figures, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the figures is flipped, a component described as "under" or "beneath" another component or feature will then be positioned "above" the other component or feature. Thus, the exemplary term "under" can encompass both the "above" and "below" orientations. Additionally, the device may be otherwise positioned (e.g., rotated 90 degrees or at other orientations), and accordingly, the spatial relative descriptors used herein are to be interpreted.

[0030] The terms used herein are for the purpose of describing particular embodiments and are not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are also intended to include the plural forms. Additionally, when the terms "comprise" and / or "include" and their variants are used in this specification, it is stated that there are the stated features, integers, steps, operations, components, assemblies, and / or groups thereof, but it does not preclude the presence or addition of one or more other features, integers, steps, operations, components, assemblies, and / or groups thereof. It should also be noted that, as used herein, the terms "substantially", "about", and other similar terms are used as approximate terms and not as terms of degree, and thus they are used to explain the inherent deviations of measured, calculated, and / or provided values that would be recognized by a person of ordinary skill in the art.

[0031] Figure 1 is a schematic structural diagram of a stretching device for an ultra-thin PVC film;

[0032] Figure 2 is a cross-sectional view of a stretching device for an ultra-thin PVC film;

[0033] Figure 3 is a cross-sectional view of a moving mechanism of a stretching device for an ultra-thin PVC film;

[0034] Figure 4 is Figure 2 an enlarged view of part A in

[0035] As Figures 1-4 shown, a stretching device for an ultra-thin PVC film according to the present disclosure may include components such as a stretching mechanism, a moving mechanism, and a heating mechanism;

[0036] As Figures 1-4As shown in the figure, the stretching mechanism includes a workbench 1, moving grooves 2, a bidirectional screw 3, a motor 4, mounting plates 5, a lower conveying structure 6, electric push rods 7, an upper conveying structure 8, and a first threaded seat 28; two of the moving grooves 2 are opened on the upper surface of the workbench 1, the bidirectional screw 3 is rotatably installed in the two moving grooves 2, the output end of the motor 4 is connected to one end of the bidirectional screw 3 extending outside the workbench 1, the side surface of the motor 4 is fixedly connected to the side surface of the workbench 1, two of the first threaded seats 28 are respectively arranged on the two threads of the bidirectional screw 3, two of the mounting plates 5 are respectively installed on the upper surfaces of the two first threaded seats 28, two of the lower conveying structures 6 are respectively installed on the upper surfaces of the two mounting plates 5, two of the electric push rods 7 are respectively installed on the upper surfaces of the two mounting plates 5 and are on one side of the lower conveying structure 6, and two of the upper conveying structures 8 are respectively installed at the upper ends of the two electric push rods 7;

[0037] When the PVC film enters between the two groups of lower conveying structures 6 and upper conveying structures 8, all the lower conveying structures 6 and upper conveying structures 8 operate to drive the film forward. When a section of the film completely enters between the lower conveying structure 6 and the upper conveying structure 8, the two electric push rods 7 shorten to drive the two upper conveying structures 8 to descend. Then, each upper conveying structure 8 cooperates with the lower conveying structure 6 to clamp one side of the film, realizing the clamping and fixing of the film. After that, the motor 4 drives the bidirectional screw 3 to rotate, driving the two first threaded seats 28 to move away from each other, thereby driving the two mounting plates 5 to move away from each other, and further stretching the clamped film through the two groups of lower conveying structures 6 and upper conveying structures 8;

[0038] As Figures 1-4 shown in the figure, the moving mechanism includes support seats 9, inner grooves 10, unidirectional screws 11, second threaded seats 12, side plates 13, rollers 14, cavities 15, rotating rods 16, first bevel gears 17, and second bevel gears 18. Two of the support seats 9 are installed on the lower surface of the workbench 1, two of the inner grooves 10 are respectively opened inside the support seats 9, two of the unidirectional screws 11 are respectively rotatably installed in the corresponding inner grooves 10, two of the second threaded seats 12 are respectively arranged on the two unidirectional screws 11, two groups of side plates 13 are respectively installed on the sides of each second threaded seat 12, two groups of rollers 14 are respectively installed on the lower surfaces of the two groups of side plates 13, two of the cavities 15 are respectively opened inside the support seats 9 and are directly above the inner grooves 10, the rotating rod 16 is installed between the two cavities 15, two of the first bevel gears 17 are respectively installed at the upper ends of the unidirectional screws 11 extending into the cavities 15, and two of the second bevel gears 18 are respectively installed on the rotating rod 16 in each cavity 15 and are meshed with the first bevel gears 17;

[0039] When a mobile device is needed, rotate the crank handle 20 to drive the rotating rod 16 to rotate. The rotating rotating rod 16 drives the two one-way screws 11 to rotate through the two second bevel gears 18 and the first bevel gear 17. Each rotating one-way screw 11 drives the second thread seat 12 to descend, thereby driving the four rollers 14 to descend and extend out of the round opening 19 to support the entire device. After that, the device can be moved by using the round opening 19. After the movement is completed, reverse the rotating rod 16 and through the above operations, the four rollers 14 are retracted into the inner groove 10 from the round opening 19, and the lower surface of the support seat 9 contacts the ground to support the entire device, and the movement is completed.

[0040] The moving mechanism further includes a round opening 19 and a crank handle 20. Two groups of crank handles 20 are respectively opened on the lower surface of the two support seats 9 and are directly above each roller 14. The crank handle 20 is installed at one end of the rotating rod 16 extending outside the support seat 9.

[0041] The staff can use the crank handle 20 to drive the rotating rod 16 to rotate. Through the round opening 19, the roller 14 can be extended out of the support seat 9, and at the same time, it can also be retracted into the inner groove 10 through the round opening 19.

[0042] Figure 5 It is a cross-sectional view of the heating mechanism of an ultra-thin PVC film stretching device

[0043] As Figure 1 and Figure 5 shown, the heating mechanism includes a rectangular plate 21, a shunt pipe 22, a jet nozzle 23, a heating box 24, an air pump 25, a heating wire 26 and a connecting pipe 27. The two rectangular plates 21 are installed on the side of the workbench 1. The shunt pipe 22 is installed between the two rectangular plates 21. A plurality of jet nozzles 23 are evenly installed on the side of the shunt pipe 22 and vertically upward. The heating box 24 is installed on the side of the workbench 1 and is below the shunt pipe 22. A plurality of air pumps 25 are evenly installed inside the heating box 24. The heating wire 26 is installed on one side of the heating box 24 and the output end extends into the heating box 24. The connecting pipe 27 is installed on the other side of the heating box 24 and one end extends into the heating box 24 and the other end is communicated with the shunt pipe 22.

[0044] When the film moves upward on the film downward conveying structure 6, the heating wire 26 and the air pump 25 operate. The operating air pump 25 converts electrical energy into heat energy to generate heat. The operating heating wire 26 injects gas into the heating box 24. The gas absorbs the heat emitted by the air pump 25 and becomes hot air. Then the hot air enters the shunt pipe 22 through the connecting pipe 27. After being shunted by the shunt pipe 22, it is evenly ejected upward by each jet nozzle 23. Thus, when the film passes directly above the shunt pipe 22, each jet nozzle 23 is used to spray hot air on the passing film, thereby increasing the temperature of the film itself, reducing the stretching difficulty of the film, and improving the stretching effect.

[0045] In the description of this specification, the description with reference to terms such as "one embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment / way or example are included in at least one embodiment / way or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments / ways or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments / ways or examples described in this specification and the features of different embodiments / ways or examples.

[0046] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0047] Those skilled in the art should understand that the above embodiments are only for clearly explaining the present disclosure and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications can be made on the basis of the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. An ultra-thin PVC film stretching device, characterized in that: include: A stretching mechanism, which is used to move the film and stretch it simultaneously; A moving mechanism, wherein the moving mechanism is provided with rollers that can be raised and lowered to help the staff to move the entire device; The moving mechanism comprises a support seat (9), two of the support seats (9) are respectively mounted on the lower surface of the workbench (1), an inner groove (10) is provided inside each of the support seats (9), a one-way screw rod (11) is rotatably mounted at the inner center of each of the inner grooves (10), a second threaded seat (12) is arranged on each of the one-way screw rods (11), side plates (13) are mounted on both sides of each of the second threaded seats (12), and the lower end of each of the side plates (13) is provided with a second threaded seat (12). The surfaces of the two support seats (9) are provided with rollers (14); a cavity (15) is provided inside each support seat (9) just above the inner groove (10); a rotating rod (16) is installed in the two cavities (15) for common rotation; the upper end of each one-way screw (11) extends into the cavity (15) and is provided with a first bevel gear (17); a second bevel gear (18) meshing with the first bevel gear (17) is installed inside each cavity (15) on the surface of the rotating rod (16) A heating mechanism is used to heat the film moving onto the stretching mechanism.

2. The ultra-thin PVC film stretching device according to claim 1, characterized in that: The moving mechanism also includes a crank (20), which is mounted on an end of the rotating rod (16) extending to the outside of the support seat (9), and a circular opening (19) aligned with each roller (14) is provided on the lower surface of each support seat (9) just below each roller (14).

3. The ultra-thin PVC film stretching device according to claim 1, characterized in that: The stretching mechanism comprises a workbench (1), the upper surface of the workbench (1) is provided with two corresponding movable grooves (2), a bidirectional screw (3) is installed between the two movable grooves (2) for common rotation, a first thread seat (28) is provided on the thread surface of the bidirectional screw (3) in each movable groove (2), a motor (4) is installed on one side of the movable groove (2) on the side of the workbench (1), and the driving end of the motor (4) extends into the movable groove (2) and is fixedly connected to one end of the bidirectional screw (3).

4. The ultra-thin PVC film stretching device according to claim 3, characterized in that: The stretching mechanism also includes a mounting plate (5), wherein the two mounting plates (5) are respectively mounted on the upper surfaces of two first threaded seats (28), a lower conveying structure (6) is mounted on the upper surface of each first threaded seat (28), an electric push rod (7) is mounted on the upper surface of each first threaded seat (28) on one side of the lower conveying structure (6), and an upper conveying structure (8) is mounted on the upper end of each electric push rod (7) directly above the lower conveying structure (6).

5. The ultra-thin PVC film stretching device according to claim 1, characterized in that: The heating mechanism comprises a rectangular plate (21), two of the rectangular plates (21) are correspondingly mounted on the other side of the workbench (1), a shunt pipe (22) is mounted between the two rectangular plates (21), and a plurality of air nozzles (23) evenly distributed and facing upwards are mounted on the surface of the shunt pipe (22).

6. The ultra-thin PVC film stretching device according to claim 5, characterized in that: The heating mechanism further comprises a heating box (24), the heating box (24) being installed on the other side of the workbench (1) and being located below the shunt pipe (22), a plurality of evenly distributed air pumps (25) being arranged in the heating box (24), a heating wire (26) having an output end extending into the heating box (24) being installed on one side of the heating box (24), a connecting pipe (27) being installed at one end of the shunt pipe (22), and one end of the connecting pipe (27) extending into the heating box (24).

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