Film blowing machine for PVC (polyvinyl chloride) heat shrinkage film

Abstract

The utility model relates to the technical field of film blowing machines, and discloses a film blowing machine for a PVC (polyvinyl chloride) heat shrink film, which comprises a device main body and a guide mechanism, one side of the top of the device main body is fixedly connected with a device bracket, the top of the device bracket is fixedly connected with a traction assembly, the other side of the bottom of the traction assembly is movably connected with the guide mechanism, and the guide mechanism is fixedly connected with the device bracket. The guide mechanism comprises a clamping plate, the back face of the top of the clamping plate is fixedly connected with a mounting rod, the middle of the outer side of the mounting rod is movably sleeved with a first sleeve, the back face of the clamping plate is fixedly connected with evenly-distributed connecting rods, and the position, close to the bottom, of the back face of the clamping plate is movably sleeved with an adjusting rod. The mounting sleeves are mounted at the two ends of the adjusting rod, the transverse rods are inserted into the mounting holes to fix the mounting sleeves and the adjusting rod, and then the transverse rods are fixed through the fixing nuts, so that the size of the herringbone structure of the guide mechanism can be adjusted by adjusting the fixing nuts, and a film can be shaped conveniently.

Description

Technical Field

[0001] This utility model relates to the field of blown film machine technology, and more specifically to a blown film machine for PVC heat shrink film. Background Technology

[0002] PVC, or polyvinyl chloride, is a polymer produced by the free radical polymerization of vinyl chloride monomer. It is a thermoplastic widely used in construction, medical, packaging, automotive and other fields. A blown film machine is a mechanical device that heats and melts plastic particles (such as PE, POF, PVC, etc.) and then produces films through processes such as extrusion, blowing, and cooling. Its core function is to transform solid plastics into continuous tubular films. The principle of blown film forming is to press the plastic raw material from the front end of the screw extruder into the die head, so that the highly elastic plastic raw material is extruded into a tube preform through the die head. Compressed air introduced at the bottom of the die head is used to evenly and freely inflate the tube preform into a tubular film with a large diameter. At the same time, the tubular film is stretched longitudinally during the upward traction process, gradually cooled, flattened by the guide roller pressure plate, pulled by the traction roller, and finally wound into a cylinder.

[0003] The existing blown film machine's traction device has a single structure and function, making it inconvenient to adjust and debug. When the shaping component of the traction device is not adjusted properly, it will cause uneven film stretching, resulting in deviations in film shaping and affecting the quality of the finished film. Secondly, when the traction device malfunctions, it is inconvenient to repair, which will affect the blown film. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a blown film machine for PVC heat shrink film to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a blown film machine for PVC heat shrink film, comprising a device body and a guiding mechanism. A device bracket is fixedly connected to one side of the top of the device body, a winding mechanism is fixedly connected to the bottom of one side of the device bracket, a traction component is fixedly connected to the top of the device bracket, a guiding mechanism is movably connected to the other side of the bottom of the traction component, an extrusion mechanism is fixedly connected to the top center of the device body, and the guiding mechanism includes a clamping plate. An installation rod is fixedly connected to the top back of the clamping plate, a first sleeve is movably sleeved on the outer center of the installation rod, evenly distributed connecting rods are fixedly connected to the back of the clamping plate, and an adjusting rod is movably sleeved on the back of the clamping plate near the bottom.

[0006] Furthermore, the adjusting rod has mounting holes at both ends, and mounting sleeves are movably sleeved at both ends of the adjusting rod. Through crossbars are movably sleeved on both sides of the mounting sleeves, and fixing nuts are movably connected to both ends of the crossbars near the mounting sleeves.

[0007] Furthermore, the traction assembly includes a support plate, a traction roller is movably connected to the other side of the back of the support plate, and a transmission roller is movably connected to one side of the back of the support plate.

[0008] Furthermore, the device support includes a support plate, the front of which has an installation groove, and a fixing block is fixedly connected to one side of the support plate near the top and bottom. A guide rod is fixedly connected to the middle of the fixing block, and a second sleeve is movably sleeved on the outer middle of the guide rod.

[0009] Furthermore, the winding mechanism includes a winding support plate, and a winding roller is movably connected to the back of the winding support plate.

[0010] Furthermore, the extrusion mechanism includes a screw extrusion body, a drive motor is fixedly connected to the other side of the screw extrusion body, a feed port is fixedly connected to the other side of the top of the screw extrusion body, and a blown film assembly is fixedly connected to one side of the top of the screw extrusion body.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. This utility model has a guiding mechanism. By installing the mounting sleeve at both ends of the adjusting rod, aligning the mounting holes on both sides of the adjusting rod with the mounting holes on both sides of the mounting sleeve, inserting the crossbar into the mounting hole to fix the mounting sleeve and the adjusting rod, and then fixing the crossbar with a fixing nut, the clamping plate forms a herringbone structure. This facilitates the adjustment of the size of the herringbone structure of the guiding mechanism by adjusting the fixing nut, which is convenient for the shaping of the film.

[0013] 2. This utility model features a guide mechanism that allows for easy disassembly of the support plate by removing the fixing bolts on the support plate, mounting the support plate with an installation rod, and then fixing the installation rod with a fastening nut. This facilitates the installation and disassembly of the guide mechanism and is beneficial for the maintenance of the traction device. Attached Figure Description

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

[0015] Figure 2 This is a schematic diagram of the guiding mechanism of this utility model.

[0016] Figure 3 This is a schematic diagram of the device support and traction assembly of this utility model.

[0017] Figure 4 This is a schematic diagram of the extrusion mechanism of this utility model.

[0018] The attached figures are labeled as follows: 1. Main body of the device; 2. Device support; 201. Support plate; 202. Fixing block; 203. Guide rod; 204. Second sleeve; 3. Winding mechanism; 301. Winding support plate; 302. Winding roller; 4. Traction assembly; 401. Support plate; 402. Traction roller; 403. Transmission roller; 5. Guiding mechanism; 501. Clamping plate; 502. Mounting rod; 503. First sleeve; 504. Connecting rod; 505. Adjusting rod; 506. Mounting sleeve; 507. Crossbar; 508. Fixing nut; 6. Extrusion mechanism; 601. Screw extrusion body; 602. Drive motor; 603. Feed inlet; 604. Blown film assembly. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The blown film machine for PVC heat shrink film involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Reference Figures 1-4 This utility model provides a blown film machine for PVC heat shrink film, including a main body 1 and a guiding mechanism 5. A device bracket 2 is fixedly connected to one side of the top of the main body 1. A winding mechanism 3 is fixedly connected to the bottom of one side of the device bracket 2. A traction component 4 is fixedly connected to the top of the device bracket 2. The guiding mechanism 5 is movably connected to the other side of the bottom of the traction component 4. An extrusion mechanism 6 is fixedly connected to the middle of the top of the main body 1. The guiding mechanism 5 includes a clamping plate 501. An installation rod 502 is fixedly connected to the back of the top of the clamping plate 501. A first sleeve 503 is movably sleeved on the middle of the outer side of the installation rod 502. A uniformly distributed connecting rod 504 is fixedly connected to the back of the clamping plate 501. An adjusting rod 505 is movably sleeved on the back of the clamping plate 501 near the bottom. By removing the fixing bolts on the support plate 401, the support plate 401 can be easily disassembled. The installation rod 502 is installed on the support plate 401, and then the installation rod 502 is fixed to the support plate 401 by tightening nuts. This makes the guiding mechanism 5 easy to install and disassemble, which is beneficial for the maintenance of the traction device.

[0021] In a preferred embodiment, the adjusting rod 505 has mounting holes at both ends, and mounting sleeves 506 are movably sleeved at both ends of the adjusting rod 505. A through crossbar 507 is movably sleeved on both sides of the mounting sleeve 506. Fixing nuts 508 are movably connected to both ends of the crossbar 507 near the mounting sleeves 506. By installing the mounting sleeves 506 at both ends of the adjusting rod 505, aligning the mounting holes on both sides of the adjusting rod 505 with the mounting holes on both sides of the mounting sleeve 506, inserting the crossbar 507 into the mounting holes to fix the mounting sleeves 506 and the adjusting rod 505, and then fixing the crossbar 507 with the fixing nuts 508, the clamping plate 501 forms a herringbone structure. This facilitates adjusting the size of the herringbone structure of the guide mechanism 5 by adjusting the fixing nuts 508, which is beneficial for the shaping of the film.

[0022] In a preferred embodiment, the device support 2 includes a support plate 201, with an installation groove on the front side of the support plate 201. A fixing block 202 is fixedly connected to one side of the support plate 201 near the top and bottom positions. A guide rod 203 is fixedly connected to the middle of the fixing block 202. A second sleeve 204 is movably sleeved on the middle of the outer side of the guide rod 203.

[0023] In a preferred embodiment, the winding mechanism 3 includes a winding support plate 301, and a winding roller 302 is movably connected to the back of the winding support plate 301.

[0024] In a preferred embodiment, the traction assembly 4 includes a support plate 401, a traction roller 402 is movably connected to the other side of the back of the support plate 401, and a transmission roller 403 is movably connected to one side of the back of the support plate 401.

[0025] In a preferred embodiment, the extrusion mechanism 6 includes a screw extrusion body 601, a drive motor 602 fixedly connected to the other side of the screw extrusion body 601, a feed port 603 fixedly connected to the other side of the top of the screw extrusion body 601, and a blown film assembly 604 fixedly connected to one side of the top of the screw extrusion body 601.

[0026] The working principle of this utility model:

[0027] By removing the fixing bolts on the support plate 401, the support plate 401 can be easily disassembled. The mounting rod 502 is installed on the support plate 401, and then the mounting rod 502 is fixed to the support plate 401 by tightening the nut. This makes the guide mechanism 5 easy to install and disassemble, which is beneficial for the maintenance of the traction device. By installing the mounting sleeve 506 on both ends of the adjusting rod 505, aligning the mounting holes on both sides of the adjusting rod 505 with the mounting holes on both sides of the mounting sleeve 506, and fixing the mounting sleeve 506 and adjusting rod 505 by inserting the crossbar 507 into the mounting hole, and then fixing the crossbar 507 by fixing the nut 508, the clamping plate 501 forms a herringbone structure. This allows the size of the herringbone structure of the guide mechanism 5 to be adjusted by adjusting the fixing nut 508, which is beneficial for the shaping of the film.

[0028] During operation, the drive motor 602 operates to make the screw extrusion body 601 work. PVC resin granules and auxiliary materials are mixed in proportion and then enter the screw extrusion body 601 through the feed port 603 for heating and melting. The molten plastic is extruded from the blown film assembly 604 to form a tubular film preform. After cooling and shaping, it is guided into a flat shape by the herringbone structure of the guide mechanism 5 and sent to the traction roller 402. After being guided by the transmission roller 403 and the second sleeve 204, it is finally wound up by the take-up roller 302.

[0029] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A film blowing machine for PVC heat-shrinkable films, comprising a machine body (1) and a guide mechanism (5), characterized in that: A device bracket (2) is fixedly connected to one side of the top of the device body (1). A winding mechanism (3) is fixedly connected to the bottom of one side of the device bracket (2). A traction component (4) is fixedly connected to the top of the device bracket (2). A guide mechanism (5) is movably connected to the other side of the bottom of the traction component (4). An extrusion mechanism (6) is fixedly connected to the middle of the top of the device body (1). The guide mechanism (5) includes a clamping plate (501). An installation rod (502) is fixedly connected to the back of the top of the clamping plate (501). A first sleeve (503) is movably sleeved on the middle of the outer side of the installation rod (502). A uniformly distributed connecting rod (504) is fixedly connected to the back of the clamping plate (501). An adjusting rod (505) is movably sleeved on the back of the clamping plate (501) near the bottom.

2. A film blowing machine for PVC heat shrinkable film as claimed in claim 1, wherein: The adjusting rod (505) has mounting holes at both ends, and mounting sleeves (506) are movably sleeved on both ends of the adjusting rod (505). Through crossbars (507) are movably sleeved on both sides of the mounting sleeves (506), and fixing nuts (508) are movably connected to both ends of the crossbars (507) near the mounting sleeves (506).

3. The film blowing machine for PVC heat shrinkable film according to claim 1, characterized in that: The traction assembly (4) includes a support plate (401), a traction roller (402) is movably connected to the other side of the back of the support plate (401), and a transmission roller (403) is movably connected to one side of the back of the support plate (401).

4. The film blowing machine for PVC heat shrinkable film according to claim 1, characterized in that: The device support (2) includes a support plate (201), the front of the support plate (201) is provided with an installation groove, a fixing block (202) is fixedly connected to one side of the support plate (201) near the top and bottom, a guide rod (203) is fixedly connected to the middle of the fixing block (202), and a second sleeve (204) is movably sleeved on the middle of the outer side of the guide rod (203).

5. The film blowing machine for PVC heat shrinkable film according to claim 1, characterized in that: The winding mechanism (3) includes a winding support plate (301), and a winding roller (302) is movably connected to the back side of the winding support plate (301).

6. A film blowing machine for PVC heat shrinkable film as claimed in claim 1, wherein: The extrusion mechanism (6) includes a screw extrusion body (601), a drive motor (602) is fixedly connected to the other side of the screw extrusion body (601), a feed port (603) is fixedly connected to the other side of the top of the screw extrusion body (601), and a blown film assembly (604) is fixedly connected to one side of the top of the screw extrusion body (601).

Images