Film laminating machine

Abstract

The utility model discloses a film laminating machine and relates to the technical field of woven bag processing. Comprising a workbench, an unwinding mechanism and a winding mechanism which are arranged on the two sides of the workbench correspondingly, and a tensioning mechanism, a first extrusion mechanism, a hot pressing mechanism and a second extrusion mechanism which are sequentially arranged between the unwinding mechanism and the winding mechanism and located above the workbench. By arranging the tensioning mechanism, the tensioning degree of the thin film and the woven bag can be adjusted, and then the flatness of the thin film and the woven bag is improved; by arranging the first extrusion mechanism, a film and a woven bag can be extruded, so that the flatness and the fitting degree of the film and the woven bag are improved, and the wrinkle degree and bubbles of a woven bag finished product during hot pressing operation are effectively reduced; and by arranging the second extrusion mechanism, the hot-pressed woven bag product can be extruded, bubbles generated in the woven bag product can be extruded out, and then the flatness and the film covering quality of the woven bag finished product are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of woven bag processing, in particular to a laminating machine. Background Art

[0002] Woven bags, also known as snakeskin bags, are a type of plastic bag used for packaging. Their raw materials are generally various chemical plastic raw materials such as polyethylene and polypropylene. They are extruded and stretched into flat wires, and then woven, knitted and made into bags.

[0003] During the processing of woven bags, a laminating machine needs to use hot pressing technology to cover the surface of the woven bag with a layer of plastic film to enhance the waterproofness of the woven bag.

[0004] However, during the hot pressing operation, if the fit between the film and the woven bag is poor before hot pressing, wrinkles will easily form between the plastic film and the woven bag during the hot pressing process, reducing the flatness of the finished woven bag after hot pressing; and if the finished woven bag is not squeezed after hot pressing, bubbles will easily form in the finished woven bag, seriously affecting the lamination effect. Utility Model Content

[0005] The utility model aims to provide a laminating machine, which can effectively improve the flatness of the finished woven bag and greatly reduce the bubbles in the finished woven bag, thereby improving the laminating quality of the finished woven bag.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] A laminating machine comprises a workbench, a reeling mechanism and a reeling mechanism respectively arranged on both sides of the workbench, a tensioning mechanism sequentially arranged between the reeling mechanism and the reeling mechanism and located above the workbench, a first extrusion mechanism, a hot pressing mechanism, and a second extrusion mechanism.

[0008] Preferably, the first extrusion mechanism includes a first U-shaped frame arranged on the top of the workbench, a first hydraulic rod arranged on the first U-shaped frame, a first U-shaped plate arranged at the bottom end of the first hydraulic rod, and at least one first pressing roller arranged between the first U-shaped plates.

[0009] Preferably, the second extrusion mechanism includes a second U-shaped frame arranged on the top of the workbench, a second hydraulic rod arranged on the second U-shaped frame, a second U-shaped plate arranged at the bottom end of the second hydraulic rod, and at least one second pressing roller arranged between the second U-shaped plates.

[0010] Preferably, a limiting mechanism is also arranged between the tensioning mechanism and the first extrusion mechanism, and the limiting mechanism includes two first vertical plates arranged on the top of the workbench, a third hydraulic rod arranged on the side where the two first vertical plates are close to each other, and a first limiting plate arranged at the telescopic end of the third hydraulic rod.

[0011] Preferably, the unwinding mechanism comprises a woven bag unwinding roller and a film unwinding roller arranged above the woven bag unwinding roller.

[0012] Preferably, the winding mechanism comprises a winding roller, a surface sliding sleeve of the winding roller is provided with two second limit plates, each of the second limit plates is vertically penetrated by a screw, and one end of the screw can contact the winding roller.

[0013] Preferably, the tensioning mechanism includes two third vertical plates arranged on the top of the workbench, two connecting plates arranged between the two third vertical plates from top to bottom, fourth hydraulic rods respectively arranged at the bottom ends of the two connecting plates, third U-shaped plates arranged at the telescopic ends of the two fourth hydraulic rods, and a tensioning roller rotatably arranged between the third U-shaped plates.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] By setting up a tensioning mechanism, the tension of the film and the woven bag can be adjusted, thereby improving the flatness of the two; by setting up a first extrusion mechanism, the film and the woven bag can be extruded to improve the flatness and fit of the two, and effectively reduce the wrinkles and bubbles of the finished woven bag during the hot pressing operation; by setting up a second extrusion mechanism, the woven bag product after hot pressing can be extruded to squeeze out the bubbles generated therein, thereby improving the flatness and coating quality of the finished woven bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model in the front view direction;

[0017] Figure 2 It is a schematic diagram of the structure of the utility model in a top view;

[0018] Figure 3 This is a schematic diagram of the structure of the tensioning mechanism in the utility model when viewed from the left;

[0019] Figure 4 This is a schematic diagram of the structure of the first extrusion mechanism in the utility model when viewed from the left;

[0020] Figure 5 This is a schematic diagram of the structure of the limit mechanism of the utility model when viewed from the left;

[0021] In the figure: 100-working table, 110-first U-shaped frame, 120-first hydraulic rod, 130-first U-shaped plate, 140-first pressing roller, 190-first vertical plate, 200-third hydraulic rod, 210-first limiting plate, 220-winding roller, 230-second limiting plate, 240-screw, 250-third vertical plate, 270-connecting plate, 280-fourth hydraulic rod, 290-third U-shaped plate, 300-tensioning roller, 400-hot pressing mechanism. DETAILED DESCRIPTION

[0022] Example 1

[0023] A laminating machine, such as Figure 1 and Figure 2 As shown, it includes a workbench 100, an unwinding mechanism (on the left side of the workbench 100) and a rewinding mechanism (on the right side of the workbench 100) respectively arranged on both sides of the workbench 100, a tensioning mechanism, a first extrusion mechanism, a hot pressing mechanism 400, and a second extrusion mechanism arranged from left to right between the unwinding mechanism and the rewinding mechanism and located above the workbench 100. Further, as Figure 4 As shown, the first extrusion mechanism includes a first U-shaped frame 110 disposed on the top of the workbench 100, a first hydraulic rod 120 disposed on the first U-shaped frame 110, a first U-shaped plate 130 disposed at the bottom end of the first hydraulic rod 120, and at least one first pressing roller 140 disposed between the first U-shaped plates 130. Further, the second extrusion mechanism (left view is the same as Figure 4 ) comprises a second U-shaped frame arranged on the top of the workbench 100, a second hydraulic rod arranged on the second U-shaped frame, a second U-shaped plate arranged at the bottom end of the second hydraulic rod, and at least one second pressing roller arranged between the second U-shaped plates. Further, as Figure 3 As shown, the tensioning mechanism includes two third vertical plates 250 arranged on the top of the workbench 100, two connecting plates 270 arranged between the two third vertical plates 250 from top to bottom, fourth hydraulic rods 280 respectively arranged at the bottom ends of the two connecting plates 270, third U-shaped plates 290 arranged at the telescopic ends of the two fourth hydraulic rods 280, and a tensioning roller 300 rotatably arranged between the third U-shaped plates 290. Further, as Figure 1 As shown, the unwinding mechanism includes a first support frame (existing technology, not shown in the figure), and a woven bag unwinding roller arranged on the support frame from bottom to top and a film unwinding roller arranged above the woven bag unwinding roller.

[0024] Working principle: Pull the free end of the woven bag on the woven bag unwinding roller to the top surface of the tensioning roller 300 below, and pull the free end of the film on the film unwinding roller to the top surface of the tensioning roller 300 above, and then make the upper and lower distributed films and woven bags pass through the first pressing roller 140, the hot pressing mechanism 400 and the bottom of the second pressing roller in sequence, and be rolled up on the winding mechanism. Thereafter, the first hydraulic rod 120 and the second hydraulic rod are started to move the first U-shaped plate 130 and the first pressing roller 140 downward until the film and the woven bag are pressed on the top surface of the workbench 100, thereby improving the close fit between the film and the woven bag. Thereafter, under the action of the hot pressing mechanism 400 (the prior art, the present invention does not make any improvements to it, and any device that can achieve the hot pressing operation of the present invention can be used), the film is hot pressed onto the woven bag to form a woven bag product. Thereafter, under the action of the second hydraulic rod, the second U-shaped plate and the second pressing roller are moved downward until the woven bag product is squeezed to squeeze out the bubbles inside the woven bag product, thereby improving the flatness and coating quality of the woven bag product.

[0025] When the tension of the film and the woven bag needs to be adjusted, the fourth hydraulic rods 280 on the two connecting plates 270 are respectively started to move the tensioning roller 300 in the vertical direction.

[0026] It is worth noting that the first pressing roller 140 is rotationally connected to the first U-shaped plate 130, and the second pressing roller is rotationally connected to the second U-shaped plate. In this way, the first pressing roller 140 and the second pressing roller can perform the conveying function while performing the extrusion function.

[0027] Further, such as Figure 1 , Figure 2 and Figure 5 As shown, a limiting mechanism is also provided between the tensioning mechanism and the first extrusion mechanism, and the limiting mechanism includes two first vertical plates 190 provided on the top of the workbench 100, a third hydraulic rod 200 provided on the side where the two first vertical plates 190 are close to each other, and a first limiting plate 210 provided at the telescopic end of the third hydraulic rod 200. In this solution, by providing the third hydraulic rod 200, the distance between the two first limiting plates 210 can be adjusted, thereby adapting to films and woven bags of different widths. The utility model is applicable to films and woven bags of the same width. During actual transportation, the two sides of the film and the woven bag are respectively attached to the inner sides of the two limiting plates to achieve the purpose of limiting the film and the woven bag, thereby ensuring that the two can be completely overlapped on the basis of close fitting in the future, thereby avoiding the phenomenon of wrinkles in the woven bag product due to deflection during transportation.

[0028] Further, such as Figure 1 and Figure 2As shown, the winding mechanism includes a second support frame (existing technology, not shown in the figure), a winding roller 220 rotatably arranged on the second support frame, and a motor (existing technology, not shown in the figure) driving the winding roller 220 to rotate, and the surface of the winding roller 220 is slidingly sleeved with two second limit plates 230, each of the second limit plates 230 is vertically penetrated by a screw 240, one end of the screw 240 can contact the winding roller 220, and the two second limit plates 230 can move along the axial direction of the winding roller 220. In this solution, by setting two second limit plates 230 to be slidably set on the winding roller 220, the distance between the two second limit plates 230 can be adjusted according to the width of the woven bag product, thereby limiting the woven bag product to the two second limit plates 230; by setting the screw 240, when the end of the screw 240 is rotated to be in close contact with the winding roller 220, the second limit plate 230 can be limited to the winding roller 220 by friction force, thereby preventing it from moving along the axial direction of the winding roller 220.

[0029] In the description of this patent, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "longitudinal", "horizontal" and the like indicate the orientation or position relationship based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing this patent and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of this patent.

Claims

1. A laminating machine, characterized in that: It comprises a workbench (100), an unwinding mechanism and a rewinding mechanism respectively arranged on both sides of the workbench (100), a tensioning mechanism sequentially arranged between the unwinding mechanism and the rewinding mechanism and located above the workbench (100), a first extrusion mechanism, a hot pressing mechanism (400), and a second extrusion mechanism; The first extrusion mechanism comprises a first U-shaped frame (110) arranged on the top of the workbench (100), a first hydraulic rod (120) arranged on the first U-shaped frame (110), a first U-shaped plate (130) arranged at the bottom end of the first hydraulic rod (120), and at least one first pressing roller (140) arranged between the first U-shaped plates (130); The second extrusion mechanism comprises a second U-shaped frame arranged on the top of the workbench (100), a second hydraulic rod arranged on the second U-shaped frame, a second U-shaped plate arranged at the bottom end of the second hydraulic rod, and at least one second pressing roller arranged between the second U-shaped plates; A limiting mechanism is also provided between the tensioning mechanism and the first extrusion mechanism, the limiting mechanism comprising two first vertical plates (190) provided on the top of the workbench (100), a third hydraulic rod (200) provided on a side where the two first vertical plates (190) are close to each other, and a first limiting plate (210) provided at the telescopic end of the third hydraulic rod (200).

2. A laminating machine according to claim 1, characterized in that: The unwinding mechanism comprises a woven bag unwinding roller and a film unwinding roller arranged above the woven bag unwinding roller.

3. A laminating machine according to claim 1, characterized in that: The winding mechanism comprises a winding roller (220), the surface of the winding roller (220) being slidably sleeved with two second limit plates (230), each of the second limit plates (230) being vertically penetrated by a screw (240), one end of the screw (240) being capable of contacting the winding roller (220).

4. A laminating machine according to claim 1, characterized in that: The tensioning mechanism comprises two third vertical plates (250) arranged on the top of the workbench (100), two connecting plates (270) arranged in sequence from top to bottom between the two third vertical plates (250), fourth hydraulic rods (280) respectively arranged at the bottom ends of the two connecting plates (270), third U-shaped plates (290) arranged at the telescopic ends of the two fourth hydraulic rods (280), and a tensioning roller (300) rotatably arranged between the third U-shaped plates (290).

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