Tension-adjustable winding machine for POF shrink film production

Abstract

The utility model discloses a tension-adjustable winding machine for POF shrink film production, which relates to the related technical field of shrink film production and comprises a fixed bottom plate, an unwinding roller is mounted on the left side of the top end of the fixed bottom plate, a winding roller is arranged on the right side of the top end of the fixed bottom plate, and a tensioning roller is arranged on one side between the unwinding roller and the winding roller; the extension rod is sleeved with a tensioning adjusting mechanism used for adjusting the height of the tensioning roller. According to the tension-adjustable winding machine for POF shrink film production, a driving gear can be driven to rotate through the output end of a first driving motor, and the driving gear is meshed with a rack when rotating, so that the rack is driven to move up and down in a fixing rod; the height of the tensioning roller can be adjusted according to the position relation between the extension rod and the fixed rod, so that the tensioning roller can control the adjustment of the tension degree of the shrink film, and the tensioning roller can better adjust the winding state of the shrink film according to requirements.

Description

TECHNICAL FIELD

[0001] The utility model relates to the related technical field of shrink film production, specifically to a tension adjustable type winding machine for POF shrink film production. BACKGROUND

[0002] POF shrink film, full name multi-layer co-extrusion polyolefin heat shrinkable film, is an environmentally friendly packaging material. During the production of shrink film, a winding machine is needed to separate and wind the shrink film, so that the shrink film can be stacked for storage later. During use, the conventional winding machine is inconvenient to adjust the tension of the shrink film according to the needs, which leads to the problem of loose winding caused by insufficient tension of the shrink film during use.

[0003] In order to overcome the above defects, the prior art (Chinese patent with publication number CN118270576A and publication date of 2024-07-02) is a PE film winding machine with adjustable tension and a tension adjusting method thereof, which includes a containing box, a rolling assembly, a cleaning assembly, a winding roller, a flattening assembly, and a positioning assembly. The rolling assembly, cleaning assembly, winding roller, and positioning assembly are all arranged in the containing box. The rolling assembly is used to flatten the PE film. The cleaning assembly is arranged inside the rolling assembly and is used to clean the surface of the flattened PE film. The flattening assembly is used to flatten the cleaned assembly. By arranging the rolling assembly, the PE film is fed into the rolling assembly. The rolling assembly is used to roll the PE film, which flattens the wrinkles and makes the PE film flat for winding. This avoids the accumulation of wrinkles caused by winding with the winding machine, and the thin thickness of the PE film and the accumulation of wrinkles make the surface of the PE film uneven when winding, which leads to damage of the PE film after winding due to tightness and poor use effect.

[0004] The above mechanism can press the film by using the rolling assembly to ensure the flatness of the film surface during winding. However, since the film generally has a certain elasticity, it is easy to loosen during winding, which affects the winding quality. Utility model content

[0005] The utility model aims to provide a tension adjustable type winding machine for POF shrink film production to solve the problem of insufficient tension of the shrink film during use of the conventional winding machine, which leads to loose winding.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: A kind of tension-adjustable winding machine for POF shrink film production, including fixed base plate, the left side of the top of fixed base plate is equipped with unwinding roller, the right side of the top of fixed base plate is equipped with winding roller, and one side between the unwinding roller and winding roller is equipped with tensioning roller;The front and rear ends of the tensioning roller are both equipped with extension rod, and the outer portion of extension rod is equipped with tensioning adjusting mechanism for adjusting the height of tensioning roller, the fixed rod is equipped in the outer portion of extension rod, the front end of the fixed rod is equipped with first drive motor, the output of first drive motor extends to the inside of fixed rod and is equipped with driving gear, and the side of driving gear is engaged with rack, and the bottom end of rack is connected with the top of extension rod;The front end of winding roller is equipped with second drive motor, and the output of second drive motor extends to below winding roller and is equipped with corrector mechanism for centering treatment to shrink film.

[0007] Further, the top of the extension rod is slidably connected to the inside of the fixed rod, and the extension rod is rotatably connected to the tensioning roller.

[0008] Further, the corrector mechanism includes a bidirectional threaded rod, and the bidirectional threaded rod is mounted to the output of the second drive motor through a shaft coupling, the outer portion of the bidirectional threaded rod is threadedly connected with a movable block, the top of the movable block is mounted with a push plate, the top of the push plate is mounted with a corrector ring, and the corrector ring is sleeved on the outside of the winding roller.

[0009] Further, the inside diameter of the corrector ring is greater than the outside diameter of the winding roller, and the corrector ring is in the shape of a circular ring.

[0010] Further, the top of the inside of the corrector ring is mounted with a fixed block, and the inside of the corrector ring is slidably connected with an adjusting block, and the top of the adjusting block and the bottom of the fixed block are both mounted with a conductive sheet.

[0011] Further, the front and rear ends below the winding roller are both provided with elastic air bags, and the front end of the elastic air bag is mounted with a pressing plate, the left and right sides of the pressing plate are both mounted with a connecting spring, and the side of the elastic air bag is mounted with a nozzle through a hose.

[0012] Further, the nozzle is arranged above the winding roller, and the nozzles are arranged on the left and right sides of the winding roller.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The output end of the first drive motor can drive the driving gear to rotate, the driving gear is in meshing with the rack during rotation, so that the rack is driven and moves up and down inside the fixed rod, the fixed rod moves up and down, which synchronously drives the extension rod to move up and down, the position relationship between the extension rod and the fixed rod can adjust the height of the tension roller, so that the tension roller can control the adjustment of the tension of the shrink film, and then the tension roller can better adjust the winding state of the shrink film according to the demand.

[0015] Further, the output end of the second drive motor rotates to drive the bidirectional threaded rod to rotate, the bidirectional threaded rod is in threaded connection with the movable block, so that the bidirectional threaded rod can drive the movable block to move, the movable block drives the advancing plate and the aligning ring to move left and right during movement, the aligning ring is sleeved outside the winding roller, the aligning ring can align and center the shrink film wound outside the winding roller, so that the side of the shrink film can keep a flat state, reducing the position deviation of the shrink film.

[0016] Further, when the shrink film is wound, the adjusting block moves upward due to the increase in thickness, the conductive sheet at the top end of the adjusting block is in close contact with the conductive sheet at the bottom end of the fixed block, and the conductive sheets are electrified when they are in contact, so that the unwinding roller stops rotating and unwinding, so that the shrink film can complete the winding process; the fixed block and the conductive sheet are connected through the spring, when the winding roller is disassembled and replaced, the adjusting block is automatically reset by the elastic force of the spring, so that the adjusting block can continue to remind the thickness of the next volume of shrink film.

[0017] 2. The movable block is driven to move by the bidirectional threaded rod during rotation, and the advancing plate is driven to advance and extrude the extrusion plate during movement of the movable block, so that the elastic air bag arranged on the side of the extrusion plate is stressed and the internal gas is discharged through the hose, and the nozzle can blow air on the surface of the shrink film, which can reduce the dust remaining on the surface of the shrink film and also can blow the surface of the shrink film flat, avoiding wrinkles of the shrink film during winding.

[0018] Further, the elastic air bag can be reset in position synchronously when the advancing plate is reset by the elastic force of the connecting spring, so that the elastic air bag can keep the inflation state and blow air on the surface of the shrink film. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a front view structural schematic diagram of the utility model.

[0020] Figure 2 It is a side view sectional structure schematic diagram of the utility model.

[0021] Figure 3The utility model discloses a structure diagram of the right pushing mechanism and the blowing flat mechanism.

[0022] Figure 4 The utility model discloses a structure diagram of the right pushing mechanism.

[0023] Figure 5 The utility model discloses a structure diagram of the tension adjusting mechanism.

[0024] Figure 6 The utility model discloses a structure diagram of the blowing flat mechanism.

[0025] In the drawing: 1, fixed bottom plate, 2, unwinding roller, 3, tensioning roller, 4, winding roller, 5, first drive motor, 6, driving gear, 7, rack, 8, extension rod, 9, fixed rod, 10, second drive motor, 11, two-way threaded rod, 12, movable block, 13, advancing plate, 14, right pushing ring, 15, fixed block, 16, adjusting block, 17, conducting sheet, 18, elastic air bag, 19, connecting spring, 20, extrusion plate, 21, nozzle. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the utility model.

[0027] Embodiment one: the technical scheme shown in the utility model discloses a tension adjustable type winding machine for POF shrink film production, which discloses a tension adjusting mechanism, comprising a fixed bottom plate 1, a unwinding roller 2 is installed on the left side of the top end of the fixed bottom plate 1, a winding roller 4 is arranged on the right side of the top end of the fixed bottom plate 1, a tensioning roller 3 is arranged on one side between the unwinding roller 2 and the winding roller 4, extension rods 8 are arranged at the front and back ends of the tensioning roller 3, and the extension rods 8 are externally sleeved with a tension adjusting mechanism for adjusting the height of the tensioning roller 3, the tension adjusting mechanism comprises a fixed rod 9, the fixed rod 9 is externally sleeved with the extension rod 8, a first drive motor 5 is installed at the front end of the fixed rod 9, the output end of the first drive motor 5 extends to the inside of the fixed rod 9 and is installed with a driving gear 6, the side of the driving gear 6 is engaged with a rack 7, and the bottom end of the rack 7 is connected with the top end of the extension rod 8, the top end of the extension rod 8 and the inside of the fixed rod 9 are slidingly connected, and the extension rod 8 and the tensioning roller 3 are rotationally connected. Figure 1 , Figure 2 and Figure 5 The utility model discloses a tension adjustable type winding machine for POF shrink film production, which discloses a tension adjusting mechanism, comprising a fixed bottom plate 1, a unwinding roller 2 is installed on the left side of the top end of the fixed bottom plate 1, a winding roller 4 is arranged on the right side of the top end of the fixed bottom plate 1, a tensioning roller 3 is arranged on one side between the unwinding roller 2 and the winding roller 4, extension rods 8 are arranged at the front and back ends of the tensioning roller 3, and the extension rods 8 are externally sleeved with a tension adjusting mechanism for adjusting the height of the tensioning roller 3, the tension adjusting mechanism comprises a fixed rod 9, the fixed rod 9 is externally sleeved with the extension rod 8, a first drive motor 5 is installed at the front end of the fixed rod 9, the output end of the first drive motor 5 extends to the inside of the fixed rod 9 and is installed with a driving gear 6, the side of the driving gear 6 is engaged with a rack 7, and the bottom end of the rack 7 is connected with the top end of the extension rod 8, the top end of the extension rod 8 and the inside of the fixed rod 9 are slidingly connected, and the extension rod 8 and the tensioning roller 3 are rotationally connected.

[0028] In this case, by using the unwinding roll 2 to unwind the shrink film, the height of the tensioning roll 3 is adjusted by the tensioning adjusting mechanism, so that the shrink film passes around the lower end of the tensioning roll 3, and the tensioning degree of the shrink film is controlled by the height of the tensioning roll 3, and then the shrink film can be wound by the winding roll 4; the tensioning adjusting mechanism, when in use, can drive the driving gear 6 to rotate through the output end of the first driving motor 5, and the driving gear 6 is in meshing with the rack 7 when rotating, so that the rack 7 is driven to move up and down in the fixed rod 9, and the fixed rod 9 moves up and down, which synchronously drives the extension rod 8 to move up and down, and the height of the tensioning roll 3 can be adjusted by the positional relationship between the extension rod 8 and the fixed rod 9, so that the tensioning roll 3 can control the adjustment of the tensioning degree of the shrink film, and further make the tensioning roll 3 better adjust the winding state of the shrink film according to the demand.

[0029] Embodiment two: as shown in the technical scheme of Figure 1 , Figure 2 , Figure 3 and Figure 4 , in order to solve the problem that the shrink film may deviate in angle when winding, resulting in uneven winding side: the POF shrink film production tension adjustable winding machine discloses a centering mechanism, the front end of the winding roll 4 is provided with the second driving motor 10, and the output end of the second driving motor 10 extends to the lower side of the winding roll 4 and is provided with the centering mechanism for centering the shrink film; the centering mechanism comprises a bidirectional threaded rod 11, and the bidirectional threaded rod 11 is installed on the output end of the second driving motor 10 through a shaft coupling, a movable block 12 is connected with the outside of the bidirectional threaded rod 11 in a threaded manner, a pushing plate 13 is installed at the top end of the movable block 12, a centering ring 14 is installed at the top end of the pushing plate 13, and the centering ring 14 is sleeved outside the winding roll 4; the inner diameter of the centering ring 14 is greater than the outer diameter of the winding roll 4, and the centering ring 14 is in the shape of a ring; a fixed block 15 is installed at the upper end of the inner side of the centering ring 14, and an adjusting block 16 is slidably connected with the inner side of the centering ring 14, and a conductive sheet 17 is installed at the top end of the adjusting block 16 and the bottom end of the fixed block 15.

[0030] In this case, the output end of the second drive motor 10 rotates to drive the bidirectional threaded rod 11 to rotate, and the bidirectional threaded rod 11 is threadedly connected with the movable block 12, so that the bidirectional threaded rod 11 can drive the movable block 12 to move, and the movable block 12 drives the advancing plate 13 and the centering ring 14 to move left and right when moving. The centering ring 14 is sleeved outside the winding roller 4, and the centering ring 14 can be used to center the shrink film wound outside the winding roller 4, so that the side of the shrink film can be kept flat, reducing the position deviation of the shrink film. When the shrink film is wound, the adjusting block 16 will move upward due to the increase in thickness, and the conductive sheet 17 at the top of the adjusting block 16 and the conductive sheet 17 at the bottom of the fixed block 15 are in close contact with each other. When the conductive sheets 17 are in contact with each other, power is supplied to make the unwinding roller 2 stop rotating and unwinding, so that the shrink film can complete the winding process. The fixed block 15 and the conductive sheet 17 are connected by a spring, and when the winding roller 4 is disassembled and replaced, the adjusting block 16 is automatically reset by the elastic force of the spring, so that the adjusting block 16 can continue to remind the thickness of the next winding of the shrink film.

[0031] Embodiment three: as shown in the technical scheme of Figure 1 、 Figure 2 、 Figure 3 and Figure 6 , in order to solve the problem that the surface of the shrink film may be uneven when winding: the tension adjustable winding machine for POF shrink film production, which discloses a blowing mechanism, the front and rear ends of the winding roller 4 are provided with elastic air bags 18, and the front end of the elastic air bag 18 is provided with an extrusion plate 20, the left and right sides of the extrusion plate 20 are provided with connecting springs 19, and the side of the elastic air bag 18 is provided with a nozzle 21 through a hose.

[0032] In the example, the bidirectional threaded rod 11 drives the movable block 12 to move when rotating, the movable block 12 drives the pushing plate 13 to push and extrude the extrusion plate 20 when moving, so that the elastic air bag 18 arranged on the side of the extrusion plate 20 is stressed and the internal gas is discharged through the hose, the nozzle 21 can blow the surface of the shrink film, reduce the dust remaining on the surface of the shrink film, and also blow the surface of the shrink film flat, avoid the shrink film from being wrinkled when being rolled; the air inlet of the elastic air bag 18 is provided with a one-way valve, avoiding the situation that the gas is discharged from the air inlet when the elastic air bag 18 is pressed to discharge; the air outlet of the nozzle 21 is provided with a one-way valve, avoiding the situation that the gas is reversely sucked from the nozzle 21 when the elastic air bag 18 is reset to intake; the elastic air bag 18 can be reset in position synchronously when the pushing plate 13 is reset through the elastic force of the connecting spring 19, so that the elastic air bag 18 can keep the inflation state and blow the surface of the shrink film.

[0033] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tension-adjustable winding machine for POF shrink film production, comprising a fixed base plate (1), a left side of the top end of the fixed base plate (1) is provided with a unwinding roller (2), a right side of the top end of the fixed base plate (1) is provided with a winding roller (4), and a side between the unwinding roller (2) and the winding roller (4) is provided with a tensioning roller (3); characterized in that Both ends of the tensioning roller (3) are provided with an extension rod (8), the outside of the extension rod (8) is sleeved with a tensioning adjusting mechanism for adjusting the height of the tensioning roller (3), the tensioning adjusting mechanism comprises a fixed rod (9), the fixed rod (9) is sleeved on the outside of the extension rod (8), the front end of the fixed rod (9) is provided with a first driving motor (5), the output end of the first driving motor (5) extends to the inside of the fixed rod (9) and is provided with a driving gear (6), the side of the driving gear (6) is engaged with a rack (7), and the bottom end of the rack (7) is connected with the top end of the extension rod (8); The front end of the winding roller (4) is provided with a second driving motor (10), the output end of the second driving motor (10) extends below the winding roller (4) and is provided with a centering mechanism for centering the shrink film.

2. The tension-adjustable winding machine for POF shrink film production according to claim 1, characterized in that: The top end of the extension rod (8) is connected with the inside of the fixed rod (9) in a sliding manner, and the extension rod (8) is connected with the tensioning roller (3) in a rotating manner.

3. The tension-adjustable winding machine for POF shrink film production according to claim 2, characterized in that: The centering mechanism comprises a bidirectional threaded rod (11), the bidirectional threaded rod (11) is installed on the output end of the second driving motor (10) through a shaft coupling, the outside of the bidirectional threaded rod (11) is threadedly connected with a movable block (12), the top end of the movable block (12) is provided with a pushing plate (13), the top end of the pushing plate (13) is provided with a centering ring (14), and the centering ring (14) is sleeved on the outside of the winding roller (4).

4. The tension-adjustable winding machine for POF shrink film production according to claim 3, characterized in that: The inside diameter of the centering ring (14) is greater than the outside diameter of the winding roller (4), and the centering ring (14) is in a circular ring shape.

5. The tension-adjustable winding machine for POF shrink film production according to claim 4, characterized in that: The top end of the inside of the centering ring (14) is provided with a fixed block (15), and the inside of the centering ring (14) is connected with an adjusting block (16) in a sliding manner, and the top end of the adjusting block (16) and the bottom end of the fixed block (15) are both provided with a conductive sheet (17).

6. The tension-adjustable winding machine for POF shrink film production according to claim 1, characterized in that: Both ends of the front and back of the lower part of the winding roller (4) are provided with an elastic air bag (18), the front end of the elastic air bag (18) is provided with a pressing plate (20), the left and right sides of the pressing plate (20) are both provided with a connecting spring (19), and the side of the elastic air bag (18) is provided with a nozzle (21) through a hose.

7. The tension-adjustable winding machine for POF shrink film production according to claim 6, characterized in that: The nozzle (21) is arranged above the winding roller (4), and the nozzles (21) are arranged on the left and right sides of the winding roller (4) respectively.

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