Calender for processing flexible PVC (polyvinyl chloride) membrane material

Abstract

The utility model provides a calender for processing a flexible PVC (Polyvinyl Chloride) membrane material. The calender comprises an outer frame body, a front support arm connected to the outer side of an inner sliding block, a rear support arm connected to one end of a telescopic sleeve rod, annular seats mounted at two ends of the rear support arm, cutter holders movably mounted in the annular seats through rotating rods, and scraping cutters mounted in cutter grooves; the scraping knife supported by the vertical frame, the front support arm and the rear support arm is arranged in the outer frame body, the inner sliding seat is driven by the lead screw to slide, so that the front support arm and the rear support arm drive the scraping knife to move to a corresponding extrusion roller, the height is adjusted, the distance between the scraping knife and the extrusion roller is adjusted through the telescopic sleeve and the telescopic sleeve rod, and the scraping knife is driven to move to the extrusion roller. Meanwhile, the cutter holder can be rotated, and the inclination angle of the scraping cutter can be adjusted, so that the scraping cutter is attached to the surface of the extrusion roller, in this way, when the extrusion roller rotates, waste residues on the surface of the extrusion roller can be directly scraped off through the scraping cutter, and next PVC film material calendaring cannot be affected.

Description

Technical Field

[0001] This utility model belongs to the field of membrane material processing technology, and relates to a calendering machine for processing flexible PVC membrane materials. Background Technology

[0002] PVC is a polymer formed by the polymerization of vinyl chloride monomers under the action of initiators such as peroxides and azo compounds or under the action of light and heat according to the free radical polymerization mechanism. Vinyl chloride homopolymer and vinyl chloride copolymer are collectively referred to as vinyl chloride resin. When processing PVC film, it needs to be processed by a calender. However, after processing by a traditional calender, PVC material is easily stuck to the surface of the calender roll and adheres to the material to be processed next, thus affecting the quality of subsequent PVC calendered film.

[0003] Application No. 202120859296.8 discloses a high-coverage PVC calendered film production equipment, including a mechanical frame. A motor is fixedly connected to the right side of the mechanical frame. A first extrusion roller is movably connected to the upper left side of the motor. A third extrusion roller is movably connected to the lower left side of the motor. A second extrusion roller is movably connected to the middle left side of the motor. Extrusion rollers one, two, and three are movably connected within the mechanical frame. A cleaning device is provided within the mechanical frame. This high-coverage PVC calendered film production equipment scrapes off PVC material waste from the surface of the second extrusion roller, then removes the clips and blocks, and returns the rotating sleeve to its original position, thus completing the entire process. In traditional calendering equipment, during calendering, the PVC film deforms at high temperatures, leaving material waste on the surfaces of the second, first, and third extrusion rollers, which affects the PVC material for the next calendering.

[0004] The aforementioned calender structure has a fixed scraper blade that can only scrape off waste from one side of the extrusion roller two, while the surfaces of extrusion roller one and extrusion roller three cannot be cleaned, which requires improvement. Summary of the Invention

[0005] The purpose of this invention is to provide a calender for processing flexible PVC film materials, so as to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solution: a calender for processing flexible PVC film, comprising an outer frame, an extrusion roller one, an extrusion roller two, and an extrusion roller three. The extrusion roller one, extrusion roller two, and extrusion roller three are arranged sequentially from bottom to top inside the outer frame. A vertical frame is arranged on the inner side of the outer frame. An inner slider is slidably arranged inside the vertical frame. A front support arm is connected to the outer side of the inner slider. Telescopic sleeves are provided at both ends of the front support arm. A telescopic rod is movably fitted inside the telescopic sleeve. A rear support arm is connected to one end of the telescopic rod. Annular seats are installed at both ends of the rear support arm. A knife holder is movably installed inside the annular seat via a rotating rod. A knife groove is opened at one end of the knife holder, and a scraper is installed inside the knife groove.

[0007] In the aforementioned calender for processing flexible PVC film, cooling rods are provided on one side of the second extrusion roller and one side of the third extrusion roller, and two guide shafts are provided at the front end of the outer frame.

[0008] In the aforementioned calender for processing flexible PVC film, a motor housing is provided on the outer side of the outer frame, and a drive motor is installed inside the motor housing.

[0009] In the aforementioned calender for processing flexible PVC film, a lead screw is movably installed inside the vertical frame, and the lead screw is threadedly connected to the inner slider. The bottom end of the lead screw passes through the vertical frame and is connected to a knob at the bottom of the vertical frame.

[0010] In the aforementioned calender for processing flexible PVC film, a support rod is provided at one end of the cutter holder, and an outer support groove is provided on the side of the annular seat. The support rod is movably disposed inside the outer support groove, and one end of the support rod is threadedly connected to the locking sleeving on the outer side of the annular seat.

[0011] In the aforementioned calender for processing flexible PVC film, a positioning rod is threaded on the outer side of the telescopic sleeve, and multiple evenly spaced positioning holes are opened on the outer wall of the telescopic sleeve, with one end of the positioning rod threaded into the positioning hole.

[0012] Compared with existing technologies, the advantages of this calender for processing flexible PVC film are:

[0013] This application features a scraper blade inside the outer frame, supported by a vertical frame, front support arm, and rear support arm. When waste material adheres to the surfaces of extrusion rollers one, two, and three, the inner slide can be moved by a screw, causing the front and rear support arms to move the scraper blade to the corresponding extrusion roller. After adjusting the height, the distance between the scraper blade and the extrusion roller is adjusted by a telescopic sleeve and a telescopic rod. Simultaneously, the blade holder can be rotated to adjust the tilt angle of the scraper blade, ensuring that the scraper blade is in contact with the surface of the extrusion roller. In this way, when the extrusion roller rotates, the waste material on the surface of the extrusion roller can be directly scraped off by the scraper blade, thus avoiding any impact on the next PVC film calendering process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the calender for processing flexible PVC film materials according to this utility model.

[0015] Figure 2 This is a schematic diagram of the vertical frame structure of the calender for processing flexible PVC film materials according to this utility model.

[0016] Figure 3 This is a schematic diagram of the front support arm structure of the calender for processing flexible PVC film materials according to this utility model.

[0017] Figure 4 This is a schematic diagram of the annular seat structure of the calender for processing flexible PVC film materials according to this utility model.

[0018] Figure 5 This is a schematic diagram of the scraper structure of the calender for processing flexible PVC film.

[0019] In the diagram, 1. Outer frame; 2. Extrusion roller one; 3. Extrusion roller two; 4. Extrusion roller three; 5. Cooling rod; 6. Motor housing; 7. Guide shaft; 8. Vertical frame; 9. Scraper; 10. Inner slider; 11. Lead screw; 12. Front support arm; 13. Telescopic sleeve; 14. Telescopic sleeve rod; 15. Rear support arm; 16. Annular seat; 17. Outer support groove; 18. Tool holder; 19. Support rod; 20. Locking nut. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] A calender for processing flexible PVC film includes an outer frame 1, an extrusion roller 2, an extrusion roller 3, and an extrusion roller 4. The extrusion rollers 2, 3, and 4 are arranged sequentially from bottom to top inside the outer frame 1. A vertical frame 8 is located on the inner side of the outer frame 1. An inner slider 10 is slidably mounted inside the vertical frame 8. A front support arm 12 is connected to the outer side of the inner slider 10. Telescopic sleeves 13 are installed at both ends of the front support arm 12. A telescopic rod 14 is movably mounted inside the telescopic sleeve 13. A rear support arm 15 is connected to one end of the telescopic rod 14. Annular seats 16 are installed at both ends of the rear support arm 15. A knife holder 18 is movably mounted inside the annular seat 16 via a rotating rod. A knife groove is opened at one end of the knife holder 18, and a scraper 9 is installed inside the knife groove. The scraper 9 has a metal body and is designed to be replaceable, facilitating maintenance and replacement when damaged.

[0022] like Figure 1 , Figure 2 As shown, the calender for processing flexible PVC film of this utility model has cooling rods 5 on one side of the extrusion roller 3 and the extrusion roller 4, and two guide shafts 7 at the front end of the outer frame 1. The guide shafts 7 mainly guide the raw materials. There are two sets of cooling rods 5, located at the front end and rear end of the outer frame 1 respectively.

[0023] like Figure 1 , Figure 2 As shown, the calender for processing flexible PVC film of this utility model has a motor box 6 on the outer side of the outer frame 1. The drive motor is installed inside the motor box 6. The drive motor in this application is a well-known device that can be purchased directly from the market and is known to those skilled in the art. Here we are just using it without making any structural or functional improvements. At the same time, the structure of the drive motor driving three sets of extrusion rollers is also existing public content, and we will not go into detail here.

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the calender for processing flexible PVC film of this utility model has a lead screw 11 movably installed inside the vertical frame 8, and the lead screw 11 is threadedly connected to the inner slider 10. The bottom end of the lead screw 11 passes through the vertical frame 8 and is connected to the knob at the bottom of the vertical frame 8. The lead screw 11 of this application is a prior art structure. By rotating the lead screw 11, the inner slider 10 can be driven to slide, thereby adjusting the height of the scraper 9.

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, the calender for processing flexible PVC film of this utility model has a support rod 19 at one end of the cutter holder 18, and an outer support groove 17 is opened on the side of the annular seat 16. The support rod 19 is movably disposed inside the outer support groove 17, and one end of the support rod 19 is threadedly connected to the locking sleeving 20 on the outside of the annular seat 16. When the cutter holder 18 rotates, it can be slidably supported inside the outer support groove 17 by the support rod 19. After the angle of the scraper 9 is adjusted, the locking sleeving 20 can be rotated so that the locking sleeving 20 is pressed against the outer surface of the annular seat 16, thereby limiting the cutter holder 18. The front end of the support rod 19 of this application has a threaded head structure, which can be threadedly connected to the locking sleeving 20. The front end of the locking sleeving 20 is also provided with a rubber ring, which provides good stability and is not easy to dislodge when limiting the position.

[0026] like Figure 1 , Figure 2 , Figure 3 As shown, the calender for processing flexible PVC film of this utility model has a positioning rod threaded on the outer side of the telescopic sleeve 13. The outer wall of the telescopic sleeve 14 has multiple evenly arranged positioning holes, and one end of the positioning rod is threaded into the positioning hole. When the telescopic sleeve 14 is slid and the distance of the scraper 9 is adjusted, the positioning rod can be rotated so that the positioning rod enters the positioning hole, thereby limiting the position of the telescopic sleeve 14 and the telescopic sleeve 13.

[0027] The present invention relates to a calendering machine for processing flexible PVC film. The operation of the calendering machine in this application is as follows:

[0028] In the first step of processing, the motor inside the motor housing 6 is turned on, and the motor drives the extrusion rollers 2, 3, and 4 to rotate. The flexible PVC film to be processed enters between the extrusion rollers 2 and 3 through two guide shafts 7. It is initially calendered by the extrusion rollers 2 and 3. Then the film is cooled on the cooling rods 5 set at the rear of the outer frame 1. Natural cooling is sufficient. After cooling, the film enters the gap between the extrusion rollers 3 and 4 again for secondary calendering. After calendering, it enters the cooling rods 5 at the front of the outer frame 1 for further cooling. Then the raw material is output to the next processing step, thus realizing the calendering operation.

[0029] The second step, after the PVC film is calendered, when there is waste material adhering to the surfaces of extrusion rollers 1-2, 2-3, and 3-4, the knob can be turned to drive the lead screw 11 to rotate. The lead screw 11 drives the inner slider 10 to slide, so that the front support arm 12 and the rear support arm 15 connected to the inner slider 10 move the scraper 9 to the corresponding extrusion roller. The height of the scraper 9 is adjusted so that it is the same as the height of the extrusion roller that needs to be scraped. Then, the distance between the scraper 9 and the extrusion roller is adjusted again by sliding the telescopic sleeve 13 and the telescopic rod 14, so that the scraper 9 is closer to the extrusion roller. At the same time, the blade holder 18 can be rotated to adjust the tilt angle of the scraper 9 so that the scraper 9 is in contact with the surface of the extrusion roller. In this way, when the extrusion roller rotates again, the waste residue on the surface of the extrusion roller can be directly scraped off by the scraper 9, so as not to affect the next calendering process of the PVC film.

[0030] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A calender for processing flexible PVC film, comprising an outer frame (1), a first extrusion roller (2), a second extrusion roller (3), and a third extrusion roller (4), characterized in that, The outer frame (1) is provided with extrusion roller 1 (2), extrusion roller 2 (3) and extrusion roller 3 (4) arranged sequentially from bottom to top. The outer frame (1) is provided with a vertical frame (8) on the inner side. The vertical frame (8) is provided with an inner slider (10) slidably arranged inside. The outer side of the inner slider (10) is connected to a front support arm (12). Both ends of the front support arm (12) are provided with telescopic sleeves (13). The telescopic sleeve (13) is movably fitted with a telescopic rod (14). One end of the telescopic rod (14) is connected to a rear support arm (15). Both ends of the rear support arm (15) are installed with annular seats (16). The annular seat (16) is movably installed with a knife holder (18) through a rotating rod. One end of the knife holder (18) is provided with a knife groove. The inside of the knife groove is equipped with a scraper (9).

2. The calender for processing flexible PVC film according to claim 1, characterized in that, Cooling rods (5) are provided on one side of the second extrusion roller (3) and one side of the third extrusion roller (4), and two guide shafts (7) are provided at the front end of the outer frame (1).

3. The calender for processing flexible PVC film according to claim 1, characterized in that, A motor housing (6) is provided on the outside of the outer frame (1), and a drive motor is installed inside the motor housing (6).

4. The calender for processing flexible PVC film according to claim 1, characterized in that, The vertical frame (8) is equipped with a lead screw (11) inside, and the lead screw (11) is threadedly connected to the inner slider (10). The bottom end of the lead screw (11) passes through the vertical frame (8) and is connected to the knob at the bottom of the vertical frame (8).

5. The calender for processing flexible PVC film according to claim 1, characterized in that, One end of the tool holder (18) is provided with a support rod (19), and the side of the annular seat (16) is provided with an outer support groove (17). The support rod (19) is movably disposed inside the outer support groove (17), and one end of the support rod (19) is threadedly connected to the locking sleeve (20) on the outside of the annular seat (16).

6. The calender for processing flexible PVC film according to claim 1, characterized in that, The telescopic sleeve (13) is threaded with a positioning rod on its outer side, and the outer wall of the telescopic sleeve (14) is provided with a plurality of evenly arranged positioning holes, and one end of the positioning rod is threaded into the positioning hole.

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