Automatic adjusting mechanism for film gap of film blowing machine

Abstract

This utility model provides an automatic adjustment mechanism for the film nozzle gap of a blown film machine, relating to the field of film nozzle gap adjustment technology. The mechanism includes a main body; the main body is equipped with a blown film machine die head, with a threaded blind hole on the right side of the bottom end face of the die head. An adjusting electric cylinder is installed inside the threaded blind hole. The top outer circumference of the adjusting electric cylinder has a regular hexagonal structure, and the top end face of the adjusting electric cylinder has a threaded post. The bottom end of the extending shaft of the adjusting electric cylinder has a regular hexagonal prism, and the bottom end face of the regular hexagonal prism has a threaded blind hole. This facilitates the adjustment electric cylinder's threaded installation on the blown film machine die head, allowing for easy adjustment of the film nozzle gap by raising and lowering a gap adjustment block. This solves the problem that manually adjusting the film nozzle gap is time-consuming and labor-intensive, and it is inconvenient to install automatic adjustment measures on the die head for automatic film nozzle gap adjustment.

Description

Technical Field

[0001] This utility model belongs to the field of membrane gap adjustment technology, and in particular relates to an automatic membrane gap adjustment mechanism for blown film machines. Background Technology

[0002] A blown film machine is a plastic processing equipment that heats and melts plastic particles and blows them into a film. It is mainly used to produce packaging films made of materials such as PE, POF and PVC, such as tissue packaging films. Its core processes include plastic particle melt extrusion, compressed air blowing molding, cooling and shaping and traction winding, involving components such as screw extruders, dies, cooling devices and winding systems.

[0003] Based on the above, the inventors have discovered the following shortcomings in existing membrane aperture adjustment mechanisms: 1. The die opening gap is adjusted manually, which is time-consuming and laborious. It is not convenient to install automatic adjustment measures on the die head to automatically adjust the die opening gap. 2. During the adjustment of the die opening gap, it is not possible to quickly determine the size of the die opening gap, and it is inconvenient to install measuring measures on the die head to quickly determine whether the size of the die opening gap meets the requirements. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an automatic film nozzle gap adjustment mechanism for blown film machines. This mechanism solves the problems of existing manual film nozzle gap adjustments, which are time-consuming and labor-intensive, and the inconvenience of installing automatic adjustment measures on the die head to automatically adjust the film nozzle gap. Furthermore, it addresses the difficulty in quickly determining the size of the film nozzle gap during adjustment, making it inconvenient to install measuring measures on the die head to quickly determine whether the size of the film nozzle gap meets the requirements.

[0005] The purpose and effectiveness of this automatic film nozzle gap adjustment mechanism for blown film machines are achieved through the following specific technical means: An automatic adjustment mechanism for the film nozzle gap of a blown film machine includes a mechanism body; the mechanism body is provided with a blown film machine die head, a threaded blind hole is opened on the right side of the bottom end face of the blown film machine die head, an adjusting electric cylinder is installed inside the threaded blind hole of the blown film machine die head, a regular hexagonal structure is provided on the outer circumference of the top of the adjusting electric cylinder, a threaded post is provided on the top end face of the adjusting electric cylinder, a regular hexagonal prism is provided on the end of the bottom extension shaft of the adjusting electric cylinder, and a threaded blind hole is opened on the bottom end face of the regular hexagonal prism of the adjusting electric cylinder.

[0006] Furthermore, a sealing anti-detachment cylinder is installed inside the annular groove of the blown film die head by means of threads. The upper outer circumference of the sealing anti-detachment cylinder is threaded, and the lower outer circumference of the sealing anti-detachment cylinder is provided with a regular hexagonal structure.

[0007] Furthermore, a rubber sealing cylinder is inserted inside the sealing blind hole of the blown film machine die head, and a wear-resistant layer is provided on the inner circumferential surface of the rubber sealing cylinder.

[0008] Furthermore, a gap adjusting block is locked onto the regular hexagonal rod of the gap adjusting rod by a nut. The gap adjusting block is an inverted frustum structure. A regular hexagonal groove is opened at the center of the bottom end face of the gap adjusting block, and a through hole is opened at the center of the regular hexagonal groove of the gap adjusting block.

[0009] Furthermore, a gap adjustment rod is installed inside the regular hexagonal groove on the left side of the measuring ruler by bolts. A regular hexagonal rod is provided on the top end face of the gap adjustment rod, a threaded rod is provided on the top end face of the regular hexagonal rod, a regular hexagonal prism is provided on the bottom end face of the gap adjustment rod, and a threaded blind hole is opened on the bottom end face of the regular hexagonal prism of the gap adjustment rod.

[0010] Furthermore, an adjustment measuring ruler is bolted to the hexagonal prism of the electric cylinder. The adjustment measuring ruler is an L-shaped plate structure. Hexagonal grooves are opened on both sides of the top end face of the horizontal plate of the adjustment measuring ruler. A through-hole is opened in the center of the hexagonal groove of the adjustment measuring ruler. The top of the left end face of the vertical plate of the adjustment measuring ruler is provided with scale lines arranged vertically.

[0011] Furthermore, a frustum groove is provided at the center of the top end face of the blown film die head, a transition blind hole is provided at the center of the frustum groove, a threaded hole is provided on the lower left side wall of the transition blind hole, a sealing blind hole is provided at the center of the bottom end face of the blown film die head, a through hole is provided at the center of the sealing blind hole, and a threaded annular groove is provided on the inner circumference of the bottom of the sealing blind hole.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The electric cylinder is conveniently installed on the die head of the blown film machine via a thread. The gap can be easily adjusted by raising and lowering the gap adjustment block driven by the electric cylinder. This solves the problem that the adjustment of the die head is time-consuming and laborious when the gap is manually adjusted, and it is inconvenient to install automatic adjustment measures on the die head to automatically adjust the gap.

[0013] The electric cylinder is conveniently installed on the die head of the blown film machine via a thread to support the adjusting measuring scale and the gap adjusting rod. This allows for the synchronous raising and lowering of the measuring scale and the gap adjusting rod. By adjusting the scale lines of the measuring scale, the size of the film opening gap can be calculated. This solves the problem that it is not possible to quickly determine the size of the film opening gap during the adjustment process, and it is inconvenient to install measuring measures on the die head to quickly determine whether the size of the film opening gap meets the requirements. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the main structure of this utility model.

[0015] Figure 2 This is a bottom view of the structure of this utility model.

[0016] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0017] Figure 4 This is a disassembled structural diagram of the present invention.

[0018] Figure 5 This is a bottom view of the gap adjustment block of this utility model.

[0019] Figure 6 This is a bottom view of the blown film machine die head of this utility model.

[0020] In the diagram: 1. Mechanism body; 2. Blown film die head; 3. Adjusting electric cylinder; 4. Adjusting measuring scale; 5. Gap adjusting rod; 6. Gap adjusting block; 7. Rubber sealing cylinder; 8. Sealing anti-detachment cylinder. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0022] Example 1: As shown in the attached document Figure 1 To be continued Figure 6 As shown: This utility model provides an automatic adjustment mechanism for the film nozzle gap of a blown film machine, including a mechanism body 1. The mechanism body 1 is provided with a blown film machine die head 2 for easy support of various components. A threaded blind hole is opened on the right side of the bottom end face of the blown film machine die head 2 to facilitate the installation of an adjustment electric cylinder 3 via threads. The adjustment electric cylinder 3 is installed inside the threaded blind hole of the blown film machine die head 2 to facilitate the adjustment of the measuring ruler 4 for lifting and lowering. A regular hexagonal structure is provided on the outer circumference of the top of the adjustment electric cylinder 3 to facilitate the rotation and disassembly of the adjustment electric cylinder 3 using tools. A threaded post is provided on the top end face of the adjustment electric cylinder 3 to facilitate the installation of the adjustment electric cylinder 3 via threads. A regular hexagonal prism is provided at the end of the protruding shaft at the bottom of the adjustment electric cylinder 3 to facilitate insertion into the regular hexagonal groove on the right side of the measuring ruler 4. The bottom end face of the regular hexagonal prism 3 has a threaded blind hole for easy adjustment of the measuring ruler 4, which is fixed by bolts. The center of the top end face of the blown film die 2 has a chamfered truncated groove for easy insertion and fitting of the gap adjustment block 6. The center of the chamfered truncated groove of the blown film die 2 has a transition blind hole for easy material entry. The lower left side wall of the transition blind hole of the blown film die 2 has a threaded hole that runs through the left and right sides for easy connection to an external blown film machine. The center of the bottom end face of the blown film die 2 has a sealing blind hole for easy insertion of the rubber sealing cylinder 7. The center of the sealing blind hole of the blown film die 2 has a through hole that runs vertically for easy insertion of the gap adjustment rod 5. The inner circumference of the bottom of the sealing blind hole of the blown film die 2 has a threaded annular groove for easy installation of the sealing anti-detachment cylinder 8 by thread.

[0023] The electric cylinder 3 has an adjusting measuring ruler 4 bolted to its regular hexagonal prism, facilitating the measurement of the lifting distance of the gap adjusting block 6. The adjusting measuring ruler 4 has an L-shaped plate structure, providing support for the electric cylinder 3 and the gap adjusting rod 5. Both sides of the top surface of the horizontal plate of the adjusting measuring ruler 4 have regular hexagonal slots for easy insertion of the electric cylinder 3 and the gap adjusting rod 5. A through-hole is located in the center of the hexagonal slots of the adjusting measuring ruler 4, allowing for bolt-fixed installation of the electric cylinder 3 and the gap adjusting rod 5. The top left end face of the upright plate has vertically arranged scale lines for easy measurement of the lifting distance of the gap adjustment block 6. A gap adjustment rod 5 is bolted into the hexagonal slot on the left side of the adjusting ruler 4, allowing the adjusting ruler 4 to move the gap adjustment rod 5 up and down. The top end face of the gap adjustment rod 5 has a regular hexagonal prism to prevent the gap adjustment block 6 from rotating. The top end face of the regular hexagonal prism of the gap adjustment rod 5 has a threaded rod for easy installation of a nut to lock and secure the gap adjustment block 6. The bottom end face of the gap adjustment rod 5 has a regular hexagonal prism for easy insertion into the hexagonal slot of the adjusting ruler 4 to prevent rotation. The bottom end face of the hexagonal prism of the gap adjusting rod 5 has a threaded blind hole for easy adjustment. The measuring ruler 4 is fixedly installed by bolts. A gap adjusting block 6 is locked onto the hexagonal prism of the gap adjusting rod 5 by a nut, so that the gap adjusting block 6 can form a film opening with the blown film die head 2. The gap adjusting block 6 has an inverted frustum structure for easy fitting with the blown film die head 2. A regular hexagonal groove is opened at the center of the bottom end face of the gap adjusting block 6 to facilitate the insertion of the gap adjusting rod 5 to prevent rotation. A through hole is opened at the center of the regular hexagonal groove of the gap adjusting block 6 to facilitate the passage of the gap adjusting rod 5 through the blown film die head 2. A rubber sealing cylinder 7 is inserted inside the sealing blind hole to facilitate sealing of the blown film die head 2 and the gap adjustment rod 5. The inner circumferential surface of the rubber sealing cylinder 7 is provided with a wear-resistant layer to increase the service life of the rubber sealing cylinder 7. A sealing anti-detachment cylinder 8 is installed inside the annular groove of the blown film die head 2 by threads to facilitate the anti-detachment of the rubber sealing cylinder 7. The upper outer circumference of the sealing anti-detachment cylinder 8 is threaded to facilitate the disassembly and assembly of the sealing anti-detachment cylinder 8 by threads. The lower outer circumference of the sealing anti-detachment cylinder 8 is provided with a regular hexagonal structure to facilitate the rotation and disassembly of the sealing anti-detachment cylinder 8 by tools.

[0024] The specific usage and function of this embodiment are as follows: In this utility model, such as Figure 3As shown, when adjusting the gap between the gap adjusting block 6 and the blown film die head 2, the adjusting electric cylinder 3 is activated to drive the adjusting measuring ruler 4 to rise and fall. The adjusting measuring ruler 4 drives the gap adjusting rod 5 to rise and fall synchronously, and the gap adjusting rod 5 drives the gap adjusting block 6 to rise and fall synchronously. When the gap adjusting block 6 rises, the gap between the gap adjusting block 6 and the blown film die head 2 increases; when the gap adjusting block 6 falls, the gap between the gap adjusting block 6 and the blown film die head 2 decreases. This solves the problem that manually adjusting the gap is time-consuming and laborious. At the same time, the vertical plates of the gap adjusting block 6 and the adjusting measuring ruler 4 rise and fall synchronously, which makes it convenient to measure the rising and falling distance of the gap adjusting block 6 by adjusting the scale line of the measuring ruler 4, thereby determining the size of the gap between the gap adjusting block 6 and the blown film die head 2. This solves the problem that the size of the gap cannot be quickly determined during the adjustment process.

[0025] Example 2: The difference from Example 1 is that the regular hexagonal structure of the adjusting electric cylinder 3 can also be set as a regular heptagonal structure. This makes it necessary to use a special tool that works with the regular heptagonal structure to rotate the adjusting electric cylinder 3, thus preventing non-staff members from rotating or disassembling the adjusting electric cylinder 3.

[0026] Example 3: The difference from Example 1 is that the regular hexagonal structure of the sealing anti-detachment cylinder 8 can also be set as a regular heptagonal structure. This makes the sealing anti-detachment cylinder 8 require a special tool that works with the regular heptagonal structure to rotate, thus preventing non-workers from rotating and disassembling the sealing anti-detachment cylinder 8.

Claims

1. A film nip gap automatic adjustment mechanism for a film blowing machine, characterized by: The device includes a main body (1); the main body (1) is provided with a blown film die head (2), and a threaded blind hole is provided on the right side of the bottom end face of the blown film die head (2). An adjusting electric cylinder (3) is installed inside the threaded blind hole of the blown film die head (2). A regular hexagonal structure is provided on the outer circumference of the top of the adjusting electric cylinder (3). A threaded column is provided on the top end face of the adjusting electric cylinder (3). A regular hexagonal prism is provided at the end of the bottom extension shaft of the adjusting electric cylinder (3). A threaded blind hole is provided on the bottom end face of the regular hexagonal prism of the adjusting electric cylinder (3).

2. The film gap automatic adjustment mechanism of claim 1, wherein: The blown film die (2) has a truncated frustum groove at the center of its top end face, a transition blind hole at the center of the truncated frustum groove, a threaded hole that runs through the left and right sides at the lower part of the left side wall of the transition blind hole, a sealing blind hole at the center of its bottom end face, a through hole that runs through the top and bottom at the center of the sealing blind hole, and a threaded annular groove at the bottom of the sealing blind hole.

3. The film gap automatic adjustment mechanism of claim 1, wherein: An adjustment measuring ruler (4) is bolted onto the regular hexagonal prism of the adjustment electric cylinder (3). The adjustment measuring ruler (4) is an L-shaped plate structure. Regular hexagonal grooves are provided on both the left and right sides of the top end face of the horizontal plate of the adjustment measuring ruler (4). A through-hole is provided in the center of the regular hexagonal groove of the adjustment measuring ruler (4). The top of the left end face of the vertical plate of the adjustment measuring ruler (4) is provided with scale lines arranged vertically.

4. The film gap automatic adjustment mechanism of claim 3, wherein: The gap adjustment rod (5) is installed inside the regular hexagonal groove on the left side of the adjustment measuring ruler (4) by bolts. The top end face of the gap adjustment rod (5) is provided with a regular hexagonal rod, the top end face of the regular hexagonal rod of the gap adjustment rod (5) is provided with a threaded rod, the bottom end face of the gap adjustment rod (5) is provided with a regular hexagonal prism, and the bottom end face of the regular hexagonal prism of the gap adjustment rod (5) is provided with a threaded blind hole.

5. The mechanism for automatically adjusting the film gap of a film blowing machine according to claim 4, wherein: The gap adjustment rod (5) has a gap adjustment block (6) locked to the regular hexagonal rod by a nut. The gap adjustment block (6) is an inverted frustum structure. A regular hexagonal groove is opened at the center of the bottom end face of the gap adjustment block (6). A through hole is opened at the center of the regular hexagonal groove of the gap adjustment block (6).

6. The film gap automatic adjustment mechanism of claim 2, wherein: A rubber sealing cylinder (7) is inserted into the sealed blind hole of the blown film die (2), and a wear-resistant layer is provided on the inner circumferential surface of the rubber sealing cylinder (7).

7. The mechanism for automatically adjusting the film gap of a film blowing machine according to claim 6, wherein: The blown film die head (2) has a sealing anti-detachment cylinder (8) installed inside the annular groove by threads. The upper outer circumference of the sealing anti-detachment cylinder (8) is threaded, and the lower outer circumference of the sealing anti-detachment cylinder (8) is provided with a regular hexagonal structure.

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