PVC (polyvinyl chloride) film calendering device

Abstract

The utility model relates to the technical field of PVC (polyvinyl chloride) film production, and discloses a PVC film calendering device, which comprises a machine body comprising a pair of support plates which are oppositely distributed along the horizontal direction; the pair of calendering rollers is rotationally connected between the pair of supporting plates; the driving assembly comprises two sliding block sets arranged on the supporting plate in the vertical direction, the two sliding block sets are connected with a pair of calendering rollers respectively, the calendering rollers and the sliding block sets are rotatably fixed, a first driving assembly is arranged on the supporting plate, and the driving end of the first driving assembly is connected with the two sliding block sets through a transmission unit. The two sliding block groups are configured to be close to or far away from each other; the cleaning sponge is arranged on one side of the pair of calendering rollers and is in sliding contact with the adjacent calendering rollers, a second driving assembly is arranged on the supporting plate, and the driving end of the second driving assembly is connected with the cleaning sponge so that the cleaning sponge can ascend and descend in the vertical direction. The application range of the calendering device can be widened, and the production requirements for PVC films with different thicknesses are met.

Description

Technical Field

[0001] This utility model relates to the field of PVC film production technology, and in particular to a PVC film calendering device. Background Technology

[0002] In the PVC film production process, a calender is usually used to extrude PVC raw materials with thermoplasticity and ductility to form a film with a certain thickness and surface shape. Calenders can be classified into two-roll, three-roll, and four-roll calenders according to the mesh count of the rollers.

[0003] However, existing calendering machines still have certain drawbacks. For example, in a PVC calendering film machine with publication number CN222431369U, several calendering rollers are rotatably connected to the processing table. Although cleaning sponges are provided to clean the calendering rollers, the spacing between adjacent calendering rollers cannot be adjusted, making it impossible to meet the production needs of PVC films of different thicknesses, thus limiting calendering production. Therefore, there is an urgent need for a PVC film calendering device to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a PVC film calendering device to solve the problems existing in the prior art, thereby improving the applicability of the calendering device and meeting the production needs of PVC films of different thicknesses.

[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides a PVC film calendering apparatus, comprising:

[0006] The body includes a pair of support plates that are distributed opposite each other in the horizontal direction;

[0007] A pair of calendering rolls are connected between a pair of support plates;

[0008] The driving assembly includes two slider groups arranged vertically on the support plate. The two slider groups are respectively connected to a pair of calendering rolls. The calendering rolls are rotatably fixed to the slider groups. A first driving assembly is provided on the support plate. The driving end of the first driving assembly is respectively connected to the two slider groups through a transmission unit. The two slider groups are configured to be able to move closer to or further away from each other.

[0009] The transmission unit is a self-locking structure.

[0010] A cleaning sponge is disposed on one side of a pair of calendering rolls and slides in contact with the adjacent calendering rolls. A second drive assembly is disposed on the support plate, and the drive end of the second drive assembly is connected to the cleaning sponge so that the cleaning sponge moves up and down in the vertical direction.

[0011] Preferably, the slider group includes:

[0012] A pair of sliders are respectively slidably connected to a pair of support plates. The calendering roll is connected between the pair of sliders. A drive seat is fixed to the side of the slider near the calendering roll. A slot is opened in either of the two drive seats at the same height. A drive motor is fixed in the slot. The drive motor is coaxially fixed to the adjacent calendering roll. The end of the calendering roll away from the drive motor is connected to the other drive seat.

[0013] Preferred options also include:

[0014] A pair of fixed seats are respectively fixed to the adjacent sides of a pair of support plates. A sliding groove is provided on the fixed seat along the vertical direction. The slider is limited and slidably connected in the sliding groove. Several rollers are rotated on the opposite sides of the inner wall of the sliding groove. The slider and the rollers are in sliding contact.

[0015] Preferably, the first driving component includes:

[0016] A bidirectional lead screw is connected to the slide groove, and two sliders located on the same side slide in the same slide groove, and the two sliders are centrally symmetrically screwed to both ends of the bidirectional lead screw;

[0017] A rotating motor is fixed to the support plate, and the output shaft of the rotating motor is connected to one end of the bidirectional lead screw through the transmission unit.

[0018] Preferably, the transmission unit includes:

[0019] The worm gear is coaxially fixed to the output shaft of the rotary motor;

[0020] The worm gear extends from the fixed seat at the top of the bidirectional lead screw and is fixedly connected to the axis of the worm gear, and the worm gear meshes with the worm.

[0021] The transmission housing is fixed to the top of the fixed base, and the worm gear and worm are rotatably connected inside the transmission housing.

[0022] Preferably, the second driving component includes:

[0023] The base plate is fixed to a pair of support plates at both ends. At least one cylinder is fixed to the top surface of the base plate. The piston end of the cylinder extends vertically upward and is fixed to a support plate. The cleaning sponge is fixed to the side of the support plate near the calendering roller.

[0024] Preferred options also include:

[0025] The base is fixed to the bottom of the pair of support plates. The top of the base has a groove, and the bottom inner wall of the groove has a bevel. The bevel extends downward at an angle along the center of the groove.

[0026] Preferably, the bottom of any of the support plates is provided with a discharge port communicating with the groove, and a baffle is hinged to one side of the inner wall of the top of the discharge port.

[0027] The present invention discloses the following technical effects:

[0028] This invention utilizes two slider groups that are rotatably fixed to a pair of calendering rollers. The calendering rollers rotate relative to each other to calender PVC hot melt to prepare film. A first drive component is connected to the two slider groups to drive the two slider groups to move closer or further apart, thereby adjusting the distance between the pair of calendering rollers. This improves the applicability of the calendering device and meets the production needs of PVC films of different thicknesses.

[0029] Furthermore, the drive end of the first drive assembly is connected to two slider groups via a transmission unit. After adjusting the distance between a pair of calendering rollers, the self-locking structure of the transmission unit ensures stable fixation between the two slider groups and the support plate. This prevents changes in the distance between the pair of calendering rollers due to slider group misalignment, which could ultimately affect the calendering production of PVC film and improve production quality. Then, driven by the second drive assembly, the cleaning sponge can move vertically up and down and slide into contact with the pair of calendering rollers, effectively cleaning them and ensuring the calendering effect. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a diagram showing the positional relationship between the support plate and the calendering roll in this utility model;

[0032] Figure 2 This is a diagram showing the connection relationship between the calendering roller and the cleaning sponge in this utility model;

[0033] Figure 3 This is a diagram showing the connection relationship between the slider and the calendering roller in this utility model;

[0034] Figure 4 This is a diagram showing the connection relationship between the rotary motor and the bidirectional lead screw in this utility model;

[0035] The components are as follows: 1. Support plate; 2. Calendering roller; 3. Cleaning sponge; 4. Slider; 5. Drive seat; 6. Drive motor; 7. Fixed seat; 8. Roller; 9. Double-acting lead screw; 10. Rotary motor; 11. Worm; 12. Worm wheel; 13. Baffle; 14. Transmission housing; 15. Base plate; 16. Cylinder; 17. Support plate; 18. Base. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Reference Figures 1-4 This utility model provides a PVC film calendering device, comprising:

[0039] The body includes a pair of support plates 1 that are distributed opposite each other in the horizontal direction;

[0040] A pair of calendering rolls 2 are connected between a pair of support plates 1;

[0041] The driving assembly includes two slider groups arranged vertically on the support plate 1. The two slider groups are respectively connected to a pair of calendering rollers 2. The calendering rollers 2 and the slider groups are rotatably fixed. The support plate 1 is provided with a first driving assembly. The driving end of the first driving assembly is respectively connected to the two slider groups through a transmission unit. The two slider groups are configured to be able to move closer to or further away from each other.

[0042] The transmission unit is a self-locking structure.

[0043] The cleaning sponge 3 is disposed on one side of a pair of calendering rollers 2 and slides in contact with the adjacent calendering rollers 2. A second drive assembly is provided on the support plate 1. The drive end of the second drive assembly is connected to the cleaning sponge 3 so that the cleaning sponge 3 can move up and down in the vertical direction.

[0044] This invention utilizes two slider groups that are rotatably fixed to a pair of calendering rollers 2. The calendering rollers 2 rotate relative to each other to calender PVC hot melt to prepare film. The first drive component is connected to the two slider groups respectively to drive the two slider groups to move closer or further apart, thereby adjusting the distance between the pair of calendering rollers 2. This improves the applicability of the calendering device and meets the production needs of PVC films of different thicknesses.

[0045] Furthermore, the drive end of the first drive assembly is connected to the two slider groups respectively through the transmission unit. After adjusting the distance between the pair of calendering rollers 2, the self-locking structure of the transmission unit can stably fix the two slider groups to the support plate 1, avoiding changes in the distance between the pair of calendering rollers 2 due to slider group misalignment, which would ultimately affect the calendering production of PVC film and improve production quality. Then, driven by the second drive assembly, the cleaning sponge 3 can move up and down in the vertical direction and slide into contact with the pair of calendering rollers 2 respectively, thereby effectively cleaning the calendering rollers 2 and ensuring the calendering effect of the calendering rollers 2.

[0046] Furthermore, the slider group includes:

[0047] A pair of sliders 4 are respectively slidably connected to a pair of support plates 1. A calendering roll 2 is connected between the pair of sliders 4. A drive seat 5 is fixedly connected to the side of the slider 4 near the calendering roll 2. A slot is opened in either of the two drive seats 5 located at the same height. A drive motor 6 is fixedly connected in the slot. The drive motor 6 is coaxially fixedly connected to the adjacent calendering roll 2. The end of the calendering roll 2 away from the drive motor 6 is connected to the other drive seat 5.

[0048] The calendering roll 2 is transferred between a pair of sliders 4, and a drive motor 6 is fixed in any one of the drive seats 5 to form a drive control for the calendering roll 2. The other end of the calendering roll 2 is rotatably connected to another drive seat 5 to ensure the rotational stability of the calendering roll 2.

[0049] Furthermore, it also includes:

[0050] A pair of fixed seats 7 are respectively fixed to the adjacent sides of a pair of support plates 1. A sliding groove is provided on the fixed seat 7 along the vertical direction. The slider 4 is limited and slidably connected in the sliding groove. Several rollers 8 are rotated on the opposite side of the inner wall of the sliding groove. The slider 4 and the rollers 8 slide in contact.

[0051] The slider 4 is slidably connected to the fixed seat 7, and the sliding friction between the slider 4 and the fixed seat 7 is reduced by several rollers 8.

[0052] In this technical solution, the drive seat 5, which is fixed to the slider 4, is also limited and slidably connected in the groove, thereby improving the connection stability between the slider 4 and the fixed seat 7.

[0053] Furthermore, the first drive assembly includes: a bidirectional lead screw 9, which is transferred into a slide groove, and two sliders 4 located on the same side are slidably connected in the same slide groove, and the two sliders 4 are symmetrically screwed to both ends of the bidirectional lead screw 9 along the center; a rotary motor 10, which is fixed to the support plate 1, and the output shaft of the rotary motor 10 is connected to one end of the bidirectional lead screw 9 through a transmission unit.

[0054] The rotating motor 10 drives the bidirectional lead screw 9 to rotate, and the two sliders 4, which are symmetrically threaded on the bidirectional lead screw 9, can move closer or further away from each other. By setting fixed seats 7 and bidirectional lead screws 9 on a pair of support plates 1, the pair of sliders 4 can rise and fall synchronously, and the calendering rollers 2 connected between the pair of sliders 4 can also move synchronously. Through the cooperation of the two sets of sliders, the distance between the pair of calendering rollers 2 can be adjusted.

[0055] Furthermore, the transmission unit includes:

[0056] The worm gear 11 is coaxially fixed to the output shaft of the rotating motor 10;

[0057] The top of the worm gear 12 extends from the fixed seat 7 and is fixedly connected to the axis of the worm gear 12. The worm gear 12 meshes with the worm 11.

[0058] The transmission housing 14 is fixed to the top of the fixed base 7, and the worm gear 12 and worm 11 are rotatably connected inside the transmission housing 14.

[0059] In this technical solution, the worm gear 12 and the worm 11 work together to transmit the driving force of the rotating motor 10 to the bidirectional lead screw 9, thereby realizing the rotation of the bidirectional lead screw 9. Furthermore, the self-locking structure of the worm gear 12 and the worm 11 can prevent the slider 4 from sliding along the slide groove when the rotating motor 10 stops, thus improving the effect of adjusting the gap between the pair of calendering rollers 2.

[0060] Furthermore, the second drive component includes:

[0061] The base plate 15 is fixed to a pair of support plates 1 at both ends. At least one cylinder 16 is fixed to the top surface of the base plate 15. The piston end of the cylinder 16 extends vertically upward and is fixed to a support plate 17. The cleaning sponge 3 is fixed to the side of the support plate 17 near the calendering roller 2.

[0062] The cylinder 16 drives the support plate 17 to rise and fall, while the base plate 15 is fixed below a pair of calendering rollers 2. When calendering PVC hot melt, the support plate 17 can make structural adjustments. When it is necessary to clean the calendering rollers 2, the cylinder 16 lifts the cleaning sponge 3, which slides into contact with the pair of calendering rollers 2.

[0063] Furthermore, it also includes:

[0064] The base 18 is fixed to the bottom of a pair of support plates 1. The top of the base 18 has a groove, and the bottom inner wall of the groove has a bevel. The bevel extends downward along the center of the groove.

[0065] The groove at the top of the base 18 can collect the impurities swept by the cleaning sponge 3 and guide them along the inclined side to the center of the bottom inner wall of the groove for easy disposal.

[0066] Furthermore, the bottom of any one of the support plates 1 is provided with a discharge port that communicates with the groove, and a baffle 13 is hinged to one side of the inner wall of the top of the discharge port.

[0067] Specifically, by rotating the opening baffle 13, the collected impurities are swept along the inner wall of the bottom end of the groove, and then discharged from the outlet.

[0068] The working principle of this PVC film calendering device is as follows:

[0069] By starting the drive motor 6, a pair of calendering rollers 2 are rotated in a direction that brings them closer together. The distance between the pair of calendering rollers 2 is used as the thickness of the calendered PVC film. When different PVC film thicknesses need to be met, the rotation motor 10 is started. The rotation motor 10 drives the worm gear 11 to rotate the worm wheel 12, and the worm wheel 12 drives the bidirectional screw 9 to rotate. The two sliders 4 threaded on the bidirectional screw 9 move in opposite directions. Through the two sets of sliders, the pair of calendering rollers 2 are moved closer or further apart, thereby adjusting the distance between the calendering rollers 2 to meet the calendering requirements of the PVC film.

[0070] The cleaning sponge 3 is raised and lowered by the cylinder 16 and slides in contact with a pair of calendering rollers 2 in the vertical direction. The calendering rollers 2 are rotated by the drive motor 6, which can clean the surface of the calendering rollers 2. During the cleaning process, impurities can fall directly into the groove for collection.

[0071] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0072] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A PVC film calendering apparatus, characterized in that, include: The body includes a pair of support plates (1) that are distributed opposite each other in the horizontal direction. A pair of calendering rolls (2) are connected between a pair of support plates (1); The driving assembly includes two slider groups arranged vertically on the support plate (1), the two slider groups are respectively connected to a pair of calendering rollers (2), the calendering rollers (2) are rotatably fixed to the slider groups, the support plate (1) is provided with a first driving assembly, the driving end of the first driving assembly is respectively connected to the two slider groups through a transmission unit, and the two slider groups are configured to be able to move closer to or further away from each other; The transmission unit is a self-locking structure. A cleaning sponge (3) is disposed on one side of a pair of calendering rolls (2) and slides in contact with the adjacent calendering rolls (2). A second drive assembly is provided on the support plate (1), and the drive end of the second drive assembly is connected to the cleaning sponge (3) so that the cleaning sponge (3) moves up and down in the vertical direction.

2. The PVC film calendering apparatus according to claim 1, characterized in that, The slider group includes: A pair of sliders (4) are respectively slidably connected to a pair of support plates (1). The calendering roll (2) is connected between the pair of sliders (4). A drive seat (5) is fixedly connected to the side of the slider (4) near the calendering roll (2). A slot is opened in either of the two drive seats (5) at the same height. A drive motor (6) is fixedly connected in the slot. The drive motor (6) is coaxially fixedly connected to the adjacent calendering roll (2). The end of the calendering roll (2) away from the drive motor (6) is connected to the other drive seat (5).

3. The PVC film calendering apparatus according to claim 2, characterized in that, Also includes: A pair of fixed seats (7) are respectively fixed to the adjacent sides of a pair of support plates (1). A sliding groove is provided on the fixed seat (7) along the vertical direction. The slider (4) is limited to sliding in the sliding groove. Several rollers (8) are rotated on opposite sides of the inner wall of the sliding groove. The slider (4) and the rollers (8) are in sliding contact.

4. The PVC film calendering apparatus according to claim 3, characterized in that, The first driving component includes: A bidirectional lead screw (9) is connected in the groove, and two sliders (4) located on the same side are slidably connected in the same groove, and the two sliders (4) are symmetrically screwed to both ends of the bidirectional lead screw (9) along the center. A rotating motor (10) is fixedly connected to the support plate (1), and the output shaft of the rotating motor (10) is connected to one end of the bidirectional lead screw (9) through the transmission unit.

5. The PVC film calendering apparatus according to claim 4, characterized in that, The transmission unit includes: The worm gear (11) is coaxially fixed to the output shaft of the rotary motor (10); Worm wheel (12), the top end of the bidirectional screw (9) extends out of the fixed seat (7) and is fixedly connected to the axis of the worm wheel (12), the worm wheel (12) meshes with the worm (11); The transmission housing (14) is fixed to the top of the fixed base (7), and the worm gear (12) and worm (11) are rotatably connected inside the transmission housing (14).

6. The PVC film calendering apparatus according to claim 1, characterized in that, The second driving component includes: The bottom plate (15) is fixed at both ends to a pair of support plates (1). At least one cylinder (16) is fixed to the top surface of the bottom plate (15). The piston end of the cylinder (16) extends vertically upward and is fixed to a support plate (17). The cleaning sponge (3) is fixed to the side of the support plate (17) near the calendering roller (2).

7. The PVC film calendering apparatus according to claim 1, characterized in that, Also includes: The base (18) is fixed to the bottom of the pair of support plates (1). The top of the base (18) has a groove, and the bottom inner wall of the groove has a bevel. The bevel extends downward along the center of the groove.

8. The PVC film calendering apparatus according to claim 7, characterized in that: The bottom of any of the support plates (1) is provided with a discharge port that communicates with the groove, and a baffle (13) is hinged to one side of the inner wall of the top of the discharge port.

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