Film bubble flattening and clamping mechanism of film blowing equipment

Abstract

A film bubble flattening and clamping mechanism of film blowing equipment comprises a herringbone clamping plate and a traction clamping roller, the traction clamping roller comprises a fixed roller and a movable roller, and a movable roller support is arranged at the longitudinal end of the movable roller; horizontal cylinders for driving the movable roller support to horizontally move relative to the fixed roller are respectively arranged on the front side and the rear side of the movable roller in a matched manner; the lower half section of the herringbone clamping plate, the movable roller, the fixed roller and the horizontal air cylinder are intensively arranged in a cuboid-shaped mounting box body; the front side and the rear side of the movable roller are respectively provided with a vertical plate, and a movable roller support at the end part of each side of the movable roller is arranged in the middle of the vertical plate; the horizontal position of the horizontal cylinder and the fixed roller are located on the same side of the movable roller, and the contraction direction of a piston rod of the horizontal cylinder is the same as the pressure direction of the movable roller on the fixed roller when the movable roller clamps the film. The case provided by the utility model is small in transverse size and small in occupied space.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of film blowing equipment, and particularly relates to a film bubble flattening and clamping mechanism of film blowing equipment. BACKGROUND

[0002] Plastic film can be produced by plastic film blowing equipment. The film blowing production equipment is provided with a circular extrusion die head, the extrusion die head is provided with a circular ring-shaped extrusion outlet, and the extrusion outlet faces downward. During production, the high-temperature molten resin material is extruded downward from the circular ring-shaped extrusion outlet of the extrusion die head to form a circular ring-shaped film bubble blank. In order to facilitate winding, the circular ring-shaped film bubble blank needs to be further flattened into a double-layer film, and therefore a film bubble flattening and clamping mechanism needs to be applied. The film bubble flattening and clamping mechanism comprises a herringbone-shaped clamping plate and a traction clamping roller, wherein the herringbone-shaped clamping plate is located below the circular ring-shaped extrusion outlet, and the traction clamping roller is located below the herringbone-shaped clamping plate. Figure 1 As shown in the figure, the herringbone-shaped clamping plate is composed of inclined first clamping plate 1 and second clamping plate 2, and the first clamping plate 1 and the second clamping plate 2 combine to form an inverted V-shaped structure, so it is commonly called a herringbone-shaped clamping plate in the industry. The traction clamping roller comprises a fixed roller 4 and a movable roller 3, the fixed roller 4 and the movable roller 3 are parallel to each other and have the same vertical position, and the fixed roller 4 and the movable roller 3 are in close contact and have opposite rotating directions. In this way, when the circular ring-shaped film bubble is extruded and runs downward through the herringbone-shaped clamping plate, it will be gradually flattened, then pass between the fixed roller and the movable roller, and become a double-layer sheet film after being clamped and compacted by the fixed roller and the movable roller, and then be clamped and sent downstream by the fixed roller and the movable roller.

[0003] In the initial stage of each film blowing (i.e. the bubble forming stage), when the film bubble blank is just extruded from the circular ring-shaped extrusion outlet, the end of the film bubble blank needs to be quickly moved downward by the worker to pull the film bubble downward and through the herringbone-shaped clamping plate and the traction clamping roller until it reaches the winding mechanism at the most downstream end of the production line. In the above process, if the worker pulls too slowly, the film bubble blank extruded continuously from the circular ring-shaped extrusion outlet will accumulate and entangle at a certain position, and in severe cases, the film material may become more and more disordered due to the failure to timely tension, and ultimately cannot be collected and must be stopped. In order to enable the film bubble to quickly pass through between the movable roller 3 and the fixed roller 4 of the traction clamping roller, the movable roller is also provided with a horizontal cylinder 5 for driving its horizontal movement, and the horizontal cylinder 5 drives the movable roller 3 to move away from or close to the fixed roller 4; during each pulling of the film bubble through the traction clamping roller, the movable roller moves away from the fixed roller, and after the film bubble passes through the traction clamping roller, the horizontal cylinder 5 drives the movable roller 3 to close to the fixed roller 4 to clamp the film bubble. The lower half of the herringbone-shaped clamping plate, the movable roller 3, the fixed roller 4 and the horizontal cylinder 5 are usually arranged in a rectangular box-shaped machine box 6, as shown in Figure 1 、 Figure 2 .

[0004] In the prior art, in order to let the horizontal cylinder push the movable roller close to the fixed roller to clamp the film, the traditional way of using the pushing force generated when the piston rod of the horizontal cylinder is lifted is adopted, wherein the vertical position of the horizontal cylinder is flush with the vertical position of the movable roller, that is, the central axis of the piston rod of the horizontal cylinder and the central axis of the movable roller form a vertical intersection and are located in the same plane, which means that the horizontal cylinder 5 and the fixed roller 4 are respectively located on the transversely opposite two sides of the movable roller 3, and the cylinder body of the horizontal cylinder 5, the piston rod 51 of the horizontal cylinder, the movable roller 3 and the fixed roller 4 are arranged in sequence along the transverse direction, as shown in Figure 1 Therefore, the transverse size of the case 6 of the film bubble flattening and clamping mechanism is large, and the occupied space is large. Practical new type content

[0005] The purpose of the present application is to provide a film bubble flattening and clamping mechanism of a film blowing equipment, which has a small transverse size of the case and occupies a small space.

[0006] The purpose of the present application can be achieved according to the following scheme:

[0007] A film bubble flattening and clamping mechanism of a film blowing equipment, comprising a herringbone-shaped clamp plate and a traction clamp roller, wherein the traction clamp roller is located below the herringbone-shaped clamp plate; the herringbone-shaped clamp plate is composed of two inclined left and right clamp plates, and the two clamp plates are combined to form an inverted V-shaped structure; the traction clamp roller comprises a fixed roller and a movable roller, the fixed roller and the movable roller are parallel to each other and have flush vertical positions, and the axial directions of the fixed roller and the movable roller are longitudinal; the longitudinal end portion of the movable roller is provided with a movable roller support; a horizontal cylinder for driving the movable roller support to move horizontally relative to the fixed roller is arranged on the front and rear sides of the movable roller; the lower half of the herringbone-shaped clamp plate, the movable roller, the fixed roller and the horizontal cylinder are arranged in a rectangular box-shaped mounting box; characterized in that: vertical standing plates are arranged on the front and rear sides of the movable roller, the movable roller support at each end portion of the movable roller is mounted on the middle portion of the vertical standing plate, the vertical standing plate on each side of the movable roller is connected with a sliding block, the sliding block is provided with a transverse sliding rail in a matched manner, the sliding block is transversely slidably mounted on the corresponding transverse sliding rail, the movable roller support, the vertical standing plate and the sliding block move synchronously in the transverse direction; the number of horizontal cylinders arranged on each side of the movable roller is two, the two horizontal cylinders on each side are arranged in a vertical manner and are staggered with the vertical position of the movable roller support, and the piston rods of the two horizontal cylinders are respectively connected with the upper portion and the lower portion of the vertical standing plate on the corresponding side; the horizontal cylinder is located on the same side of the movable roller as the fixed roller, and the contraction direction of the piston rod of the horizontal cylinder is the same as the pressure direction of the fixed roller when the movable roller clamps the film.

[0008] The left and right clamping plates are called first clamping plate and second clamping plate respectively, the lower end of the first clamping plate is connected with the upper part of the vertical stand, and the upper part of the first clamping plate is connected with the frame through a hinge mechanism.

[0009] The utility model has the advantages and effects that:

[0010] Firstly, the horizontal cylinder is used to drive the movable roller to tightly contact the fixed roller, the horizontal cylinder and the fixed roller are arranged on the same side (with the movable roller as the reference object), the horizontal position of the fixed roller overlaps the horizontal position of the horizontal cylinder, so that the horizontal size of the machine box of the film bubble flattening and clamping mechanism can be greatly reduced, and the space occupied by the equipment can be reduced.

[0011] Secondly, the vertical position of the horizontal cylinder is staggered with the vertical position of the fixed roller and the movable roller, and a vertical stand is additionally arranged to connect the horizontal cylinder and the movable roller support, and the lower end of the first clamping plate is also connected with the vertical stand; when the vertical stand moves left and right under the driving of the horizontal cylinder, the lower end of the first clamping plate also moves left and right, so as to drive the lower end of the herringbone clamping plate to quickly open or close; this means that during the film blowing process, the horizontal cylinder can be used to drive the lower end of the first clamping plate and the movable roller to move horizontally and transversely at the same time, so that the traction clamping roller and the herringbone clamping plate can be quickly opened before the film is pulled, and the traction clamping roller and the herringbone clamping plate can be quickly closed after the film is pulled, so that the traction clamping roller can timely assist in pulling the film bubble, which is beneficial to prevent the film bubble from being accumulated and wound in the machine box, and is beneficial to smoothly blowing the film, and the operation is simple. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic view of a film bubble flattening and clamping mechanism of a traditional film blowing equipment.

[0013] Figure 2 It is a three-dimensional structural schematic view of a machine box of a film bubble flattening and clamping mechanism.

[0014] Figure 3 It is a front view structural schematic view of a specific embodiment of the utility model when the traction clamping roller and the herringbone clamping plate are in the closed state.

[0015] Figure 4 It is Figure 3 A-A sectional view schematic view in the

[0016] Figure 5 It is Figure 4The middle C-C cross-sectional view schematic diagram.

[0017] Figure 6 The figure is a front view structural schematic diagram of the specific embodiment of the utility model in the open state of the traction clamp roller and the herringbone clamp plate.

[0018] Figure 7 The figure is Figure 6 The middle B-B cross-sectional view schematic diagram.

[0019] Figure 8 The figure is Figure 7 The middle D-D cross-sectional view schematic diagram. Specific embodiment

[0020] Figure 3 , Figure 4 , Figure 5 The figure is a bubble flattening and clamping mechanism of a film blowing equipment, including a herringbone clamp plate and a traction clamp roller, the traction clamp roller is located below the herringbone clamp plate; the traction clamp roller includes a fixed roller 4 and a movable roller 3, the fixed roller 4 and the movable roller 3 are parallel to each other and the vertical positions of the two are flush, the axial direction of the fixed roller 4 and the movable roller 3 is longitudinal, and the movable roller 3 is located on the left side of the fixed roller 4; the herringbone clamp plate is composed of two inclined left and right clamping plates, wherein the clamping plate located on the left side (the clamping plate on the same side as the movable roller 3) is a first clamping plate 1, and the clamping plate located on the right side (the clamping plate on the same side as the fixed roller 4) is a second clamping plate 2, and the first clamping plate 1 and the second clamping plate 2 combine to form an inverted V-shaped; the longitudinal end of the movable roller 3 is provided with a movable roller support 30; two horizontal air cylinders 5 for driving the movable roller support 30 to move horizontally relative to the fixed roller 4 are arranged on each side of the movable roller 3, the two horizontal air cylinders 5 on each side are arranged in an up-down manner and staggered with the vertical position of the movable roller support 30, wherein the vertical position of one of the horizontal air cylinders 5 is higher than the fixed roller 4 and the movable roller 3, and the vertical position of the other horizontal air cylinder 5 is lower than the fixed roller 4 and the movable roller 3; the lower half of the herringbone clamp plate, the movable roller 3, the fixed roller 4 and the horizontal air cylinder 5 are arranged in a rectangular box-shaped machine box 6; the front side and the rear side of the movable roller 3 are respectively provided with vertical standing plates 7, the movable roller support 30 at each end of the movable roller is installed in the middle part of the vertical standing plate 7, the vertical standing plate 7 on each side of the movable roller is respectively connected with a sliding block 8, each sliding block 8 is respectively provided with a transverse sliding rail 9, the sliding block 8 is transversely slidably installed on the corresponding transverse sliding rail 9, the movable roller support 30, the vertical standing plate 7 and the sliding block 8 move synchronously in the transverse direction, the piston rod 51 of the upper and lower horizontal air cylinders 5 respectively drives the upper part and the lower part of the vertical standing plate 7 on the corresponding side; the horizontal position of the horizontal air cylinder 5 is on the same side of the fixed roller 4 as the movable roller 3 (specifically, the horizontal air cylinder 5 and the fixed roller 4 are both on the right side of the movable roller 3), and the contraction direction of the piston rod 51 of the horizontal air cylinder is the same as the pressure direction of the fixed roller 4 when the movable roller 3 clamps the film (specifically, the contraction direction of the piston rod 51 of the horizontal air cylinder 5 is the same as the pressure direction of the fixed roller 4 when the movable roller 3 clamps the film from left to right, and the contraction direction of the piston rod 51 of the horizontal air cylinder 5 is the same as the pressure direction of the fixed roller 4 when the movable roller 3 clamps the film from right to left). Figure 3 、 Figure 5In the middle, the piston rod 51 of the horizontal cylinder 5 is retracted to the right, and the pressure direction of the movable roller 3 on the fixed roller 4 is also to the right when the movable roller 3 clamps the film, which means that the clamping force generated by the movable roller 3 and the fixed roller 4 is derived from the pulling force generated when the piston rod 51 of the horizontal cylinder 5 is retracted, rather than the pushing force when the piston rod 51 is extended. Figure 3 、 Figure 4 、 Figure 5 As shown in the figure, the lower end of the first clamping plate 1 is connected to the upper part of the vertical stand 7; a rack 64 is arranged on the upper part of the cabinet 6, and the upper part of the first clamping plate 1 is connected to the rack 64 by a hinge mechanism, which is provided with a hinge block 63, the hinge block 63 is hinged to the upper part of the first clamping plate 1 by a first longitudinal hinge shaft 61, and the hinge block 63 is hinged to the rack 64 by a second longitudinal hinge shaft 62.

[0021] During the use of the above embodiment, the horizontal cylinder 5 can be used to drive the lower end of the first clamping plate 1 and the movable roller 3 to move horizontally and transversely at the same time, and the movement is large and fast, so that the traction clamp roller and the herringbone clamping plate can be quickly opened before the film is passed (the state after being opened is shown in Figure 6 、 Figure 7 、 Figure 8 As shown in the figure), and the traction clamp roller and the herringbone clamping plate can be quickly closed after the film is passed (the state after being closed is shown in Figure 3 、 Figure 4 、 Figure 5 As shown in the figure).

Claims

1. A bubble flattening and clamping mechanism of a film blowing device, comprising a herringbone-shaped clamp plate and a traction clamp roller, the traction clamp roller being located below the herringbone-shaped clamp plate; the herringbone-shaped clamp plate is composed of two left and right clamp plates which are inclined and combined into an inverted V-shaped structure; the traction clamp roller comprises a fixed roller and a movable roller, the fixed roller and the movable roller are parallel to each other and the vertical positions of the two are flush, the axial directions of the fixed roller and the movable roller are longitudinal; the longitudinal end of the movable roller is provided with a movable roller support; a horizontal cylinder for driving the movable roller support to move horizontally relative to the fixed roller is arranged on the front and rear sides of the movable roller; the lower half of the herringbone-shaped clamp plate, the movable roller, the fixed roller and the horizontal cylinder are arranged in a rectangular box-shaped mounting box; characterized in that: The front side and the rear side of the movable roller are respectively provided with vertical upright plates, the movable roller support at each side end of the movable roller is installed at the middle part of the vertical upright plate, the vertical upright plate at each side of the movable roller is respectively connected with a sliding block, the sliding block is respectively provided with a horizontal sliding rail in a matched mode, the sliding block is installed on the corresponding horizontal sliding rail in a horizontal sliding mode, the movable roller support, the vertical upright plate and the sliding block are synchronously horizontally moved; the number of the horizontal cylinders corresponding to each side of the front and rear of the movable roller is two, the two horizontal cylinders at each side are arranged in an up-down mode and are staggered with the vertical position of the movable roller support, the piston rod of the upper and lower horizontal cylinders is respectively drivingly connected with the upper part and the lower part of the vertical upright plate at the corresponding side; the horizontal position of the horizontal cylinder is at the same side of the fixed roller with the movable roller, the contraction direction of the piston rod of the horizontal cylinder is the same as the pressure direction of the fixed roller when the movable roller clamps the film.

2. A bubble collapsing and clamping mechanism for a film blowing apparatus as claimed in claim 1, wherein: In the left and right two clamping plates, the clamping plate at the same side of the movable roller is called the first clamping plate, and the clamping plate at the same side of the fixed roller is called the second clamping plate; the lower end of the first clamping plate is connected with the upper part of the vertical upright plate; a rack is arranged on the upper part of the box body, the upper part of the first clamping plate is connected with the rack through a hinge mechanism, the hinge mechanism is provided with a hinge block, the hinge block is hinged with the upper part of the first clamping plate through a first longitudinal hinge shaft, and the hinge block is hinged with the rack through a second longitudinal hinge shaft.

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