Film blowing machine clamping plate adjusting device and film blowing machine

Abstract

The utility model relates to an adjusting device and a film blowing machine, in particular to a clamping plate adjusting device of the film blowing machine and the film blowing machine. The clamping plate adjusting device of the film blowing machine comprises two end adjusting mechanisms, each end adjusting mechanism comprises a first adjusting block and a second adjusting block, a first adjusting rod is sleeved with the first adjusting block in a threaded mode, and a second adjusting rod is sleeved with the second adjusting block in a threaded mode. The end of the first adjusting rod or the end of the second adjusting rod is rotationally connected with a first stroke mechanism doing reciprocating motion, the distance between the clamping plates can be rapidly adjusted through the stroke mechanism, adjustment is convenient and fast, response is rapid, and the clamping plate distance adjusting device is suitable for clamping plate distance adjustment in plastic bag product production. The film blowing machine comprises the clamping plate adjusting device, the clamping plate and the knurling device, different knurls can be replaced under the condition that the anilox roller does not need to be replaced, the production efficiency is improved, and the film blowing machine is suitable for the film blowing procedure in the production of plastic bag products.

Description

Technical Field

[0001] The utility model relates to an adjusting device and a film blowing machine, in particular to an adjusting device for a clamping plate of a film blowing machine and the film blowing machine. Background Art

[0002] The film blowing machine generally includes an extruder, a film blowing device, a film pressing device and a winding device. The dried masterbatch is heated and melted by the extruder, extruded into strips, and then blown out into a cylindrical film containing gas by the film blowing device. The gas in the cylindrical film is squeezed out by the film pressing device and the film is rolled, and finally wound into shape by the winding device. The film pressing device mainly squeezes out the gas in the cylindrical film through the "eight"-shaped clamping plate. Due to the different thickness requirements of different products, the thickness of the same product is also unstable in the early stage of film pressing (there are large particles that are not completely squeezed in the early stage of film pressing, commonly known as "large materials"), so the spacing of the "eight"-shaped clamping plate needs to be adjusted.

[0003] The Chinese utility model patent with publication number CN203600596U discloses a film pressing mechanism of a film blowing machine, wherein the clamp adjustment device includes a first screw and a second screw that respectively drive the two clamps, the first screw and the second screw are connected by a top block, and the two screws are rotated simultaneously by turning the hand wheel at the end of the first screw, thereby simultaneously driving the two clamps to move toward or away from each other, but this adjustment method has two problems: first, it is impossible to adjust one of the clamps individually; second, the adjustment process is a slow movement of the clamp, and when encountering "large materials", the clamp spacing cannot be quickly expanded, and the clamp spacing cannot be quickly restored after the "large materials" pass. The Chinese utility model patent with publication number CN205439236U discloses an eight-shaped clamp of a film bubble tube of a film blowing machine for a PLA ground film production line, which is provided with two adjustment rods to realize the individual adjustment of any one of the clamps, but this adjustment method still has the problem of slow clamp movement during the adjustment process. Utility Model Content

[0004] In order to solve the above deficiencies in the prior art, the utility model aims to provide a film blowing machine clamping plate adjustment device and a film blowing machine, so as to achieve the purpose of not only being able to adjust any one of the clamping plates individually, but also being able to quickly adjust the clamping plate spacing to allow "large materials" to pass through and quickly return the clamping plates to their original positions.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a film blowing machine clamping plate adjustment device, including two end adjustment mechanisms symmetrically arranged at both ends of the clamping plate, the end adjustment mechanism including a first adjustment block connected to one of the ends of the clamping plate, and also including a second adjustment block connected to the end of the other clamping plate, the first adjustment block and the second adjustment block are both slidably arranged on the frame of the film blowing machine, a first adjustment rod is threadedly sleeved in the first adjustment block, and a second adjustment rod is threadedly sleeved in the second adjustment block, the first adjustment rod and the second adjustment rod are both rotatably arranged on the frame of the film blowing machine, the end of the first adjustment rod or the second adjustment rod is rotatably connected to a first stroke mechanism that performs reciprocating motion, and the corresponding adjustment rod connected to the first stroke mechanism is slidably arranged on the frame of the film blowing machine.

[0006] As a limitation of the present invention: the first travel mechanism is connected to one end of the corresponding adjusting rod close to the inside of the frame, and hand wheels are arranged at one end of the first adjusting rod and the second adjusting rod away from the inside of the frame.

[0007] As a limitation of the present invention: the first stroke mechanism is a cylinder, and the free end of the cylinder is connected to the corresponding adjusting rod.

[0008] As a limitation of the present utility model: the first stroke mechanism is connected to the end of the second adjusting rod, the second adjusting rod is slidably and rotatably arranged on the frame of the film blowing machine through a mounting block fixed on the frame of the film blowing machine, and the first adjusting rod is rotatably arranged on the frame of the film blowing machine through a mounting block fixed on the frame of the film blowing machine.

[0009] The utility model also proposes a film blowing machine, comprising a frame and a pair of clamps arranged in an "eight" shape, the frame is provided with the above-mentioned film blowing machine clamp adjustment device, wherein the two ends of the discharge side of one clamp are rotatably connected to the first adjustment blocks of the two end adjustment mechanisms, and the two ends of the discharge side of the other clamp are rotatably connected to the second adjustment blocks of the two end adjustment mechanisms.

[0010] As a limitation of the present invention: a bending portion for folding is provided in the space formed by a pair of clamping plates.

[0011] As a limitation of the utility model: an embossing device is also provided on the frame, and the discharge end of the clamping plate faces the feed end of the embossing device; the embossing device includes a pressing roller and an anilox roller, and both ends of the anilox roller are rotatably arranged at the bottom end of the longitudinal slide groove on the frame, and both ends of the pressing roller are arranged on a movable bearing seat that can slide along the longitudinal slide groove, and the movable bearing seat is connected to a second stroke mechanism that is fixed to the frame and performs reciprocating motion, and the pressing roller, anilox roller and second stroke mechanism are two or more sets, and the axes at the same end of each anilox roller are connected through a synchronous transmission mechanism, one of the anilox rollers is connected to the power device, and the outer circumference of each anilox roller has different concave and convex patterns or concave and convex pitting.

[0012] As a limitation of the present invention: the second stroke mechanism is a cylinder, and the free end of the cylinder is fixedly connected to the movable bearing seat.

[0013] As a limitation of the present invention: the synchronous transmission mechanism is a toothed belt transmission mechanism, a sprocket transmission mechanism or a gear transmission mechanism.

[0014] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0015] The splint adjustment device of the utility model is connected with a stroke mechanism on the adjustment rod. On the basis of the original thread adjustment, the distance between the splints can be quickly adjusted through the stroke mechanism to allow "large materials" to pass through, and after the "large materials" pass through, the stroke mechanism returns to its position, so that the splints quickly return to the previous preset distance, and the adjustment is convenient and the response is quick. At the same time, any one of the splints can be adjusted separately, and the adjustment is more flexible.

[0016] The film blowing machine of the utility model is also provided with an embossing device, which can be equipped with two or more sets of different anilox rollers and matching pressing rollers. Users can arbitrarily select an anilox roller for embossing according to product requirements, and no longer need to replace the anilox roller, which can enable smooth production and greatly improve production efficiency.

[0017] In summary, the splint adjustment device of the utility model can quickly adjust the spacing between the splints through the stroke mechanism, the adjustment is convenient and the response is quick, and it is suitable for the splint spacing adjustment in the production of plastic bag products. The film blowing machine of the utility model can also replace different embossings without replacing the anilox roller, thereby improving production efficiency and being suitable for the film blowing process in the production of plastic bag products. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0020] Figure 2 This is a schematic diagram of the structure of Example 2 of the utility model.

[0021] In the figure: 1-clamp, 2-first adjusting block, 3-second adjusting block, 4-slide, 5-first adjusting rod, 6-second adjusting rod, 7-mounting block, 8-frame, 9-hand wheel, 10-first stroke mechanism, 11-bending part, 12-pressure roller, 13-anilox roller, 14-movable bearing seat, 15-longitudinal slide, 16-second stroke mechanism, 17-toothed belt transmission mechanism. DETAILED DESCRIPTION

[0022] It should be understood that the film blowing machine clamping plate adjustment device and film blowing machine described herein are preferred embodiments, which are only used to illustrate and explain the present invention and do not constitute a limitation on the present invention.

[0023] The directional terms or positional relationships such as "up", "down", "left" and "right" described in the present invention are based on the directional relationships in the drawings of the present invention specification and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the content protected by the present invention.

[0024] Example 1

[0025] In this embodiment, Figure 1 As shown, a film blowing machine clamping plate adjustment device includes two end adjustment mechanisms symmetrically arranged at both ends of the clamping plate 1. This embodiment takes the structure of one of the end adjustment mechanisms as an example for explanation. The end adjustment mechanism includes a first adjustment block 2 rotatably connected to the upper end of one clamping plate 1, and also includes a second adjustment block 3 rotatably connected to the upper end of the other clamping plate 1. A slide groove 4 is provided on the frame 8 of the film blowing machine, and the first adjustment block 2 and the second adjustment block 3 are both slidably arranged on the frame 8 of the film blowing machine through the slide groove 4.

[0026] In order to enable the two adjustment blocks to act independently and thus realize independent adjustment, a first adjustment rod 5 is threadedly sleeved in the first adjustment block 2, a second adjustment rod 6 is threadedly sleeved in the second adjustment block 3, a mounting block 7 is fixedly provided on the frame 8, the first adjustment rod 5 is rotatably sleeved in a through hole provided on the mounting block 7, and the second adjustment rod 6 is slidably and rotatably sleeved in another through hole provided on the mounting block 7, so that the first adjustment rod 5 is rotatably arranged on the frame 8, and the second adjustment rod 6 is slidably and rotatably arranged on the frame 8. A hand wheel 9 is provided at one end of the first adjustment rod 5 and the second adjustment rod 6 away from the inside of the frame 8 to facilitate the rotation of the two adjustment rods.

[0027] In order to make the spacing between the two adjustment blocks change quickly, so that the "big material" in the production process can pass through, the end of the second adjustment rod 6 away from the hand wheel 9 is rotatably connected to the first stroke mechanism 10 that performs reciprocating motion through a movable joint. Since the second adjustment rod 6 is slidably arranged on the frame 8, when the stroke mechanism is actuated, the second adjustment rod 6 can be driven to slide to the left or right as a whole, thereby causing the second adjustment block 3 to slide to the left or right. When the second adjustment rod 6 slides to the right, the spacing between the two adjustment blocks increases rapidly, and the spacing between the two clamps 1 also increases rapidly, so that the "big material" can pass through. When the second adjustment rod 6 slides to the left, the two adjustment blocks quickly return to their previous positions, and production continues without stopping. In this embodiment, the first stroke mechanism 10 is a cylinder, and the free end of the cylinder is connected to the second adjustment rod 6. Of course, the first stroke mechanism 10 can also be replaced by any stroke mechanism that can perform reciprocating motion in the prior art, such as an oil cylinder.

[0028] It should be noted that the first stroke mechanism 10 can also be set at the end of the first adjusting rod 5, as long as the adjusting rod with the first stroke mechanism 10 can be slidably and rotatably set on the frame 8, and the adjusting rod without the first stroke mechanism 10 can be rotatably set on the frame 8.

[0029] When using this embodiment, the position of the corresponding clamping plate 1 is adjusted by rotating the corresponding hand wheel 9. When "large materials" need to pass through, the free end of the first stroke mechanism 10 moves to the right to quickly open the clamping plate 1. After the "large materials" pass through, the free end of the first stroke mechanism 10 moves to the left to quickly return the clamping plate 1 to its previous position.

[0030] Example 2

[0031] In this embodiment, Figure 2 As shown, a film blowing machine comprises a frame 8 and a pair of clamps 1 arranged in an "eight" shape. The frame 8 is provided with the film blowing machine clamp 1 adjustment device of Example 1. The lower end, i.e., the wide end, of the "eight"-shaped clamp 1 is the feed end, and the upper end, i.e., the narrow end, of the "eight"-shaped clamp 1 is the discharge end. The front and rear ends of the discharge end of the left clamp 1 are rotatably connected to the first adjustment block 2 of the two end adjustment mechanisms, and the front and rear ends of the discharge end of the right clamp 1 are rotatably connected to the second adjustment block 3 of the two end adjustment mechanisms. The feed end of the clamp 1 is also provided with an adjustment device for adjusting the angle of the clamp 1, and a bending portion 11 for folding is provided in the space formed by the pair of clamps 1 at an angle. The adjustment device at the feed end of the clamp 1 and the structure of the bending portion 11 are prior art and will not be described in detail here.

[0032] On the frame 8, an embossing device is also provided downstream of the feeding of the splint 1, and the discharge end of the splint 1 faces the feed end of the embossing device; the embossing device includes two or more sets (two sets are taken as an example in this embodiment) of pressing rollers 12 and anilox rollers 13, and both ends of the anilox roller 13 are rotatably arranged at the bottom end of the longitudinal slide groove 15 on the frame 8 through a bearing seat, and both ends of the pressing roller 12 are rotatably arranged on a movable bearing seat 14 that can slide along the above-mentioned longitudinal slide groove 15, and the movable bearing seat 14 equipped with a bearing is connected to a second stroke mechanism 16 that is fixed to the frame 8 and performs reciprocating motion. In this embodiment, the second stroke mechanism 16 is a cylinder with a free end facing downward, and the free end of the cylinder is connected to the movable bearing seat 14. Of course, the first stroke mechanism 10 can also be replaced by any stroke mechanism that can perform reciprocating motion in the prior art, such as an oil cylinder.

[0033] The axes at the same end of each anilox roller 13 are connected via a chain drive mechanism (not shown in the figure), and one of the anilox rollers 13 is connected to a power device via a toothed belt drive mechanism 17. The power device in this embodiment is a motor, and the above-mentioned drive mechanism can be selected from any one of the toothed belt drive mechanism 17, sprocket drive mechanism or gear drive mechanism as needed.

[0034] The outer circumferential surface of each anilox roller 13 has different concave-convex patterns or concave-convex pitting. When working, the plastic film blown out by the film blowing machine first passes through the "eight"-shaped clamping plate 1 to squeeze out the gas therein, and then the plastic film passes between the two pairs of pressure rollers 12 and the anilox roller 13. When the product needs to be embossed, the control system selects one of the pressure rollers 12 to move downward and press on the surface of the corresponding anilox roller 13 as needed, and the motor drives one of the anilox rollers 13 to rotate through the toothed belt transmission mechanism 17, and the other anilox roller 13 rotates in the same direction through the chain transmission mechanism.

Claims

1. A film blowing machine clamping plate adjustment device, comprising two end adjustment mechanisms symmetrically arranged at both ends of the clamping plate, the end adjustment mechanism comprising a first adjustment block connected to one end of the clamping plate, and also comprising a second adjustment block connected to the other end of the clamping plate, the first adjustment block and the second adjustment block are both slidably arranged on the frame of the film blowing machine, a first adjustment rod is threadedly sleeved in the first adjustment block, and a second adjustment rod is threadedly sleeved in the second adjustment block, characterized in that: The first adjusting rod and the second adjusting rod are both rotatably arranged on the frame of the film blowing machine. The end of the first adjusting rod or the second adjusting rod is rotatably connected to a first stroke mechanism that performs reciprocating motion. The corresponding adjusting rod connected to the first stroke mechanism is slidably arranged on the frame of the film blowing machine.

2. The film blowing machine clamping plate adjusting device according to claim 1 is characterized in that: The first travel mechanism is connected to one end of the corresponding adjusting rod close to the inside of the frame, and hand wheels are arranged at one end of the first adjusting rod and the second adjusting rod away from the inside of the frame.

3. The film blowing machine clamping plate adjusting device according to claim 2 is characterized in that: The first stroke mechanism is a cylinder, and the free end of the cylinder is connected to the corresponding adjusting rod.

4. The film blowing machine clamping plate adjusting device according to any one of claims 1 to 3, characterized in that: The first stroke mechanism is connected to the end of the second adjusting rod, the second adjusting rod is slidably and rotatably arranged on the frame of the film blowing machine through a mounting block fixed on the frame of the film blowing machine, and the first adjusting rod is rotatably arranged on the frame of the film blowing machine through a mounting block fixed on the frame of the film blowing machine.

5. A film blowing machine, comprising a frame and a pair of clamping plates arranged in an "eight" shape, characterized in that: The frame is provided with a film blowing machine clamp adjustment device as described in any one of claims 1 to 4, wherein the two ends of the discharge side of one clamp are rotatably connected to the first adjustment blocks of the two end adjustment mechanisms, and the two ends of the discharge side of the other clamp are rotatably connected to the second adjustment blocks of the two end adjustment mechanisms.

6. The film blowing machine according to claim 5, characterized in that: A bending portion for folding is arranged in the space formed by the pair of clamping plates.

7. The film blowing machine according to claim 5 or 6, characterized in that: An embossing device is also provided on the frame, and the discharge end of the clamping plate faces the feed end of the embossing device; the embossing device includes a pressing roller and an anilox roller, and both ends of the anilox roller are rotatably arranged at the bottom end of the longitudinal slide groove on the frame, and both ends of the pressing roller are arranged on a movable bearing seat that can slide along the longitudinal slide groove, and the movable bearing seat is connected to a second stroke mechanism that is fixed to the frame and performs reciprocating motion. The pressing roller, the anilox roller and the second stroke mechanism are two or more sets, and the axes at the same end of each anilox roller are connected through a synchronous transmission mechanism, one of the anilox rollers is connected to the power device, and the outer circumference of each anilox roller has different concave and convex patterns or concave and convex pitting.

8. The film blowing machine according to claim 7, characterized in that: The second stroke mechanism is a cylinder, and the free end of the cylinder is fixedly connected to the movable bearing seat.

9. The film blowing machine according to claim 7, characterized in that: The synchronous transmission mechanism is a toothed belt transmission mechanism, a sprocket transmission mechanism or a gear transmission mechanism.

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