Adjustable unreeling machine for cover film production

Abstract

The utility model discloses an adjustable unreeling machine for cover film production, which comprises a base, one end of the base is fixedly provided with a fixed frame, the other end of the base is movably provided with a movable frame, and the opposite surfaces of the fixed frame and the movable frame are rotatably connected with clamping blocks. And a servo motor for driving the clamping blocks to rotate is installed on the outer side wall of the fixing frame, a pressing roller is arranged above the two clamping blocks, the two ends of the pressing roller are rotationally connected with side plates, screws are installed on the side plates, a top plate is fixed to the top of the fixing frame, and the screws slidably penetrate to the position above the top plate. The pressing roller is arranged to press the covering film, the problem that the covering film is scattered in the unwinding process is solved, continuous and stable unwinding operation is facilitated, the pressing roller can move synchronously with the clamping block, when the clamping block continuously rotates to unwind the covering film roll, the pressing roller can move downwards along with thinning of the covering film roll, and therefore the covering film roll can be conveniently unwound. And it is guaranteed that the covering film roll is always tightly abutted, and therefore the continuity and stability of the covering and pressing effect are maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of covering film production, in particular to an adjustable unwinding machine for covering film production. Background Art

[0002] Covering film is a transparent film material, usually made of PET (polyethylene terephthalate), BOPP (biaxially oriented polypropylene) and other materials. It is widely used in agricultural covering, industrial covering, daily necessities covering, printing covering, FPC covering film and other fields.

[0003] Because the covering film is thin, it is stored and transported in a roll-up manner during production. When it needs to be rolled out for use, an unwinder is required to unwind the rolled covering film. The existing unwinder does not have a pressing structure for the covering film roll during the unwinding process, so that the plastic film is easy to spread out when it is unrolled, which is not conducive to the continuous operation of the unwinding operation.

[0004] Therefore, we propose an adjustable unwinding machine for covering film production to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an adjustable unwinding machine for producing covering film, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An adjustable unwinding machine for covering film production comprises a base, a fixed frame is fixedly mounted on one end of the base, and a movable frame is movably mounted on the other end of the base, the opposite surfaces of the fixed frame and the movable frame are rotatably connected with clamping blocks, and a servo motor for driving the clamping blocks to rotate is mounted on the outer wall of the fixed frame, a pressure roller is arranged above the two clamping blocks, both ends of the pressure roller are rotatably connected with side plates, and screws are mounted on the side plates, a top plate is fixed on the top of the fixed frame, and the screw slides through to the top of the top plate;

[0008] A bevel gear 1 is rotatably installed on the lower surface of the top plate, and one of the screws penetrates the bevel gear 1 and is threadedly connected to the bevel gear 1. The edge of the bevel gear 1 is vertically meshed with the bevel gear 2, and a sprocket 1 is installed on one end of the bevel gear 2 close to the fixed frame and the end of the clamping block close to the fixed frame, and the two sprockets 1 are connected by a chain 1 transmission.

[0009] In a further embodiment, an insertion rod is connected to one end of the screw rod close to the side plate, and a slot for the insertion rod to pass through is opened inside the side plate, a spring is sleeved on the outer periphery of one end of the screw rod extending out of the side plate, and a connecting plate is fixed on the spring, the screw rod slides through the connecting plate, and a threaded sleeve is threadedly connected to the outer wall of the rod portion of the screw rod that passes through the upper surface of the connecting plate.

[0010] In a further embodiment, two screw rods pass through the same connecting plate.

[0011] In a further embodiment, a sprocket 2 is coaxially fixed to one end of the screw sleeve close to the connecting plate, and the two sprockets 2 are connected through a chain 2 transmission.

[0012] In a further embodiment, the fixing frame is connected to the base via a screw, both ends of the screw are rotatably connected to the base, and the screw passes through the bottom of the fixing frame and is threadedly connected to the fixing frame.

[0013] In a further embodiment, the bottom of the fixing frame is slidably connected to the surface of the base, and the sliding direction of the fixing frame is parallel to the axial direction of the screw.

[0014] In a further embodiment, the clamping block adopts a truncated cone structure, and the outer diameters of the opposite ends of the two clamping blocks are smaller than the outer diameters of the opposite ends.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model provides a pressure roller which can press against the surface of the covering film roll to cover the covering film and prevent the covering film from spreading out when unwinding, which is beneficial to the continuous and stable operation of the unwinding operation. The pressure roller can move synchronously with the clamping block. When the clamping block continues to rotate to unwind the covering film roll, as the thickness of the covering film roll becomes thinner, the pressure roller can move downward as the covering film roll becomes thinner, ensuring that it always presses against the covering film roll, thereby maintaining the continuity and stability of the covering pressure effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the isometric structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model when viewed from above;

[0019] Figure 3 This is a schematic diagram of the installation structure of the pressure roller and the screw rod of the utility model;

[0020] Figure 4 It is a schematic diagram of the partial cross-section structure of the pressure roller and the screw rod of the utility model.

[0021] In the figure: 1. base; 2. fixed frame; 21. movable frame; 22. screw; 3. clamping block; 4. servo motor; 5. pressure roller; 6. side plate; 61. slot; 7. screw; 71. spring; 72. plug rod; 73. connecting plate; 74. screw sleeve; 75. sprocket two; 76. chain two; 8. top plate; 9. bevel gear one; 10. bevel gear two; 11. sprocket one; 12. chain one. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0023] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood by specific circumstances.

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-2 The cam 2 is provided with a plurality of movable frames 21, each of which is provided with a plurality of movable frames 22, each of which is provided with a plurality of movable frames 23. The movable frames 21 are provided with a plurality of movable frames 24, each of which is provided with a plurality of movable frames 26. The movable frames 21 are provided with a plurality of movable frames 27, each of which is provided with a plurality of movable frames 28. The movable frames 21 are provided with a plurality of movable frames 29, each of which is provided with a plurality of movable frames 21. The movable frames 21 are provided with a plurality of movable frames 24, each of which is provided with a plurality of movable frames 26.

[0026] See also Figure 2-4 Considering that the thickness of the covering film roll becomes thinner and thinner after unwinding, if the pressure roller 5 remains in a fixed position, it will not be able to press the covering film roll. Therefore, a bevel gear 9 is rotatably installed on the lower surface of the top plate 8, one of the screws 7 penetrates the bevel gear 9 and is threadedly connected to the bevel gear 9, and the edge of the bevel gear 9 is vertically meshed with a bevel gear 2 10, and a sprocket 11 is installed on the end of the bevel gear 2 10 close to the fixed frame 2 and the end of the clamping block 3 close to the fixed frame 2. The sprocket 11 is rotatably connected to the fixed frame 2, and the two sprockets 11 are connected to the fixed frame 2. A chain 12 is sleeved therebetween to achieve synchronous transmission, so that when the clamp block 3 rotates to drive the covering film roll to unwind, the clamp block 3 drives the bevel gear 2 10 to rotate through the sprocket 11 and the chain 12, and the bevel gear 2 10 drives the bevel gear 19 to rotate. Since the bevel gear 19 is threadedly connected to the screw rod 7, the screw rod 7 moves downward under the action of the thread, thereby driving the pressure roller 5 to approach the covering film roll. The pressure roller 5 can move downward as the covering film roll becomes thinner, ensuring that it is always pressed against the covering film roll, thereby maintaining the continuity and stability of the covering pressure effect.

[0027] See also Figure 4 The locking cam 73 is pressed against the locking cam 74 to lock the locking cam 74. The locking cam 73 is pressed against the locking cam 74 when the locking cam 74 is in motion.

[0028] See also Figure 3-4 In order to facilitate the synchronous adjustment of the screw sleeves 74 on both sides, a sprocket 75 is coaxially fixed to one end of the screw sleeve 74 close to the connecting plate 73, and a chain 76 is sleeved between the two sprockets 75, so that the two screw sleeves 74 can rotate synchronously, eliminating the trouble of step-by-step adjustment and making the operation more convenient.

[0029] See also Figure 1-2In order to facilitate the loading and unloading of the covering film roll, a screw 22 is provided to connect the fixing frame 2 and the base 1. Both ends of the screw 22 are rotatably connected to the base 1, and the screw 22 passes through the bottom of the fixing frame 2 and is threadedly connected to the fixing frame 2, so that when the screw 22 is rotated, the fixing frame 2 can be driven to move, thereby adjusting the distance between the two clamping blocks 3 to facilitate clamping or loosening the covering film roll, and the bottom of the fixing frame 2 is slidably connected to the surface of the base 1, and the sliding direction of the fixing frame 2 is parallel to the axial direction of the screw 22, thereby preventing the fixing frame 2 from deflecting, making it more stable when moving and adjusting.

[0030] Furthermore, in order to improve the fixing stability of the covering film roll, the clamp block 3 is arranged to adopt a truncated cone structure, and the outer diameters of the opposite ends of the two clamp blocks 3 are smaller than the outer diameters of the opposite ends, so that the tip of the clamp block 3 can be inserted into the covering film roll drum, so as to clamp the covering film roll more firmly.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An adjustable unwinding machine for producing covering film, comprising a base (1), characterized in that: A fixed frame (2) is fixedly mounted on one end of the base (1), and a movable frame (21) is movably mounted on the other end of the base (1); opposite surfaces of the fixed frame (2) and the movable frame (21) are rotatably connected with clamping blocks (3); a servo motor (4) for driving the clamping blocks (3) to rotate is mounted on the outer wall of the fixed frame (2); a pressure roller (5) is arranged above the two clamping blocks (3); both ends of the pressure roller (5) are rotatably connected with side plates (6), and a screw rod (7) is mounted on the side plate (6); a top plate (8) is fixed on the top of the fixed frame (2), and the screw rod (7) slides through to the top of the top plate (8); A bevel gear 1 (9) is rotatably mounted on the lower surface of the top plate (8), and one of the screw rods (7) penetrates the bevel gear 1 (9) and is threadedly connected to the bevel gear 1 (9), and the edge of the bevel gear 1 (9) is vertically meshed with a bevel gear 2 (10), and a sprocket 1 (11) is mounted on one end of the bevel gear 2 (10) close to the fixed frame (2) and one end of the clamping block (3) close to the fixed frame (2), and the two sprockets 1 (11) are connected by a chain 1 (12).

2. The adjustable unwinding machine for covering film production according to claim 1, characterized in that: One end of the screw rod (7) close to the side plate (6) is connected to an insertion rod (72), and a slot (61) for the insertion rod (72) to pass through is provided inside the side plate (6). A spring (71) is sleeved on the outer periphery of one end of the screw rod (7) extending out of the side plate (6), and a connecting plate (73) is fixed on the spring (71). The screw rod (7) slides through the connecting plate (73), and a screw sleeve (74) is threadedly connected on the outer wall of the rod portion of the screw rod (7) that passes through the upper surface of the connecting plate (73).

3. The adjustable unwinding machine for covering film production according to claim 2, characterized in that: The two screw rods (7) pass through the same connecting plate (73).

4. The adjustable unwinding machine for covering film production according to claim 2, characterized in that: A second sprocket (75) is coaxially fixed to one end of the screw sleeve (74) close to the connecting plate (73), and the two second sprockets (75) are connected by a second chain (76).

5. The adjustable unwinding machine for covering film production according to claim 1, characterized in that: The fixing frame (2) and the base (1) are connected via a screw (22), both ends of the screw (22) are rotatably connected to the base (1), and the screw (22) passes through the bottom of the fixing frame (2) and is threadedly connected to the fixing frame (2).

6. The adjustable unwinding machine for covering film production according to claim 5, characterized in that: The bottom of the fixing frame (2) is slidably connected to the surface of the base (1), and the sliding direction of the fixing frame (2) and the axial direction of the screw (22) are parallel to each other.

7. The adjustable unwinding machine for covering film production according to claim 1, characterized in that: The clamping blocks (3) adopt a truncated cone structure, and the outer diameters of the opposite ends of the two clamping blocks (3) are smaller than the outer diameters of the opposite ends.

Images