Thickness deviation control device for PVC film calender

Abstract

The utility model discloses a thickness deviation control device for a PVC (polyvinyl chloride) film calender, which belongs to the technical field of calendering equipment.The thickness deviation control device for the PVC film calender comprises a bottom plate, the upper end of the bottom plate is fixedly connected with a pair of control frames, the upper end of the bottom plate is fixedly connected with a carrying plate, and the carrying plate is positioned between the pair of control frames. A thickness control plate is slidably connected between the pair of control frames, the thickness control plate is located above the carrying plate, sliding rail grooves are formed in the ends, close to each other, of the pair of control frames, driving sliding rails are installed in the sliding rail grooves, sliding blocks are slidably connected in the sliding rail grooves, and the sliding blocks are fixedly connected with the thickness control plate; according to the PVC film stretching device, the purpose that the thicker part of a PVC film is greatly heated through the thickness control plate to be softened can be achieved, so that the thick part of the PVC film is easier to stretch, the thin part of the PVC film is tough and not prone to being stretched to be thinner, and therefore the thickness deviation of the PVC film in the stretching process is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of calendering equipment, and more specifically to a thickness deviation control device for a PVC film calender. Background Art

[0002] PVC film calender is a kind of equipment used to produce PVC film. It is usually composed of multiple rollers. By adjusting the temperature, pressure and speed between the rollers, PVC films with different thicknesses and properties can be produced.

[0003] China Patent Authorization Announcement No.: CN203957265U, provides a special thickness deviation control device for PVC film calendering machine. This patent has an air pressure control valve connected in parallel between the wind main pipeline and each wind branch pipe, and the wind force delivered by the wind branch pipe is controlled by the air pressure control valve, so that the wind force of each wind branch pipe can be adjusted; an air pressure control valve is provided between the wind main pipeline and the air compressor, which can effectively control the output gas of the air compressor and greatly improve the safety of use; the surface temperature of the PVC film can be reduced, affecting the local polymer motion state of the film, so that the PVC film product is stretched under the action of force, thereby reducing the product thickness deviation and improving the precision of the PVC film product.

[0004] However, in the above patent, when the PVC film is stretched, the surface temperature is lowered to reduce the thickness deviation. After the temperature is lowered, the thin parts of the PVC film are easily stretched thinner, while the thick parts are not easily stretched. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a thickness deviation control device for a PVC film calender, which can achieve the purpose of heating the thicker part of the PVC film through a thickness control plate to make it softer, so that the thick part of the PVC film is easier to stretch, while the thin part is tougher and less difficult to stretch and thinner, thereby effectively reducing the thickness deviation of the PVC film when it is stretched.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A thickness deviation control device for a PVC film calender comprises a base plate, a pair of control frames are fixedly connected to the upper end of the base plate, a loading plate is fixedly connected to the upper end of the base plate, and the loading plate is located between the pair of control frames, a thickness control plate is slidably connected between the pair of control frames, and the thickness control plate is located above the loading plate, a pair of control frames are provided with a slide rail groove at one end close to each other, a driving slide rail is installed in the slide rail groove, a slider is slidably connected in the slide rail groove, and the slider is fixedly connected to the thickness control plate, a pair of support rods are fixedly connected to the side ends of the loading plate and the thickness control plate, a pressure roller is rotatably connected between the pair of support rods, and the purpose of heating the thicker part of the PVC film by the thickness control plate to make it softer is to make the thick part of the PVC film easier to stretch, and the thin part is tougher and less difficult to stretch and thinner, thereby effectively reducing the thickness deviation of the PVC film when stretched.

[0010] Furthermore, the thickness control plate includes a heating plate, which is slidably connected between a pair of control frames. A heat conducting plate is fixedly connected to the lower end of the heating plate. A mounting groove is provided at the lower end of the heat conducting plate. A plurality of control strips are provided in the mounting groove. The heating plate is energized for heating, so that heat is transferred from the heat conducting plate to the control strips, and the control strips focus on heating the thicker parts.

[0011] Furthermore, the control strip includes an ironing strip, which is arranged in the mounting groove, and a reserved cavity is arranged at the upper end of the ironing strip, and a heat-conducting telescopic rod is arranged at the upper end of the reserved cavity, and the heat-conducting telescopic rod is fixedly connected to the inner wall of the mounting groove, and the lower end of the heat-conducting telescopic rod is fixedly connected to a magnetic heat-conducting sheet, and a first spring is wound around the outer end of the heat-conducting telescopic rod, and the first spring is respectively fixedly connected to the inner wall of the mounting groove and the magnetic heat-conducting sheet, and the magnetic heat-conducting sheet is attached to the ironing strip by extending the heat-conducting telescopic rod, so that heat is transferred downward, so that the high temperature directly heats the PVC film.

[0012] Furthermore, the control strip also includes a sliding hole, the sliding hole is opened in the middle of the ironing strip, an iron sliding rod is slidably connected in the sliding hole, a limiting groove is opened in the inner wall of the sliding hole, a limiting ring is slidably connected in the limiting groove, and the limiting ring is fixedly connected to the outer end of the iron sliding rod, a second spring is provided in the limiting groove, and the second spring is wound around the outer end of the iron sliding rod, and the iron sliding rod is squeezed by the thicker part of the PVC film, so that it slides to the top of the sliding hole to attract the magnetic heat conductive sheet, so that the magnetic heat conductive sheet is close to the ironing strip, and the limiting ring limits the iron sliding rod, and the iron sliding rod can be reset under the action of the elastic force of the second spring.

[0013] Furthermore, the control strip also includes a shielding strip, which is fixedly connected to the inner wall of the slide hole, and the shielding strip can shield the magnetic attraction between the magnetic heat conductive sheet and the iron slide rod.

[0014] Furthermore, a plurality of the ironing strips are fixedly connected with heat-resistant elastic threads, and the plurality of ironing strips are connected to each other by the heat-resistant elastic threads, so that the ironing strips can be reset after being moved and are not easily broken.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] (1) This solution can achieve the purpose of heating the thicker part of the PVC film by a thickness control plate to make it softer, so that the thick part of the PVC film is easier to stretch, while the thin part is tougher and less difficult to stretch and thinner, thereby effectively reducing the thickness deviation of the PVC film when it is stretched.

[0018] (2) In this solution, the thickness control plate includes a heating plate, which is slidably connected between a pair of control frames. A heat conducting plate is fixedly connected to the lower end of the heating plate. A mounting groove is provided at the lower end of the heat conducting plate. A plurality of control strips are provided in the mounting groove. When the heating plate is powered on for heating, heat is transferred from the heat conducting plate to the control strips, and the control strips heat the thicker parts intensively.

[0019] (3) In the present solution, the control strip includes an ironing strip, which is arranged in the installation groove. A reserved cavity is arranged at the upper end of the ironing strip. A heat-conducting telescopic rod is arranged at the upper end of the reserved cavity, and the heat-conducting telescopic rod is fixedly connected to the inner wall of the installation groove. A magnetic heat-conducting sheet is fixedly connected to the lower end of the heat-conducting telescopic rod. A first spring is wound around the outer end of the heat-conducting telescopic rod, and the first spring is respectively fixedly connected to the inner wall of the installation groove and the magnetic heat-conducting sheet. The heat-conducting telescopic rod is extended to drive the magnetic heat-conducting sheet to stick to the ironing strip, so that heat is transferred downward, so that the high temperature directly heats the PVC film.

[0020] (4) In the present solution, the control strip also includes a sliding hole, which is provided in the middle of the ironing strip, an iron sliding rod being slidably connected in the sliding hole, a limiting groove being provided in the inner wall of the sliding hole, a limiting ring being slidably connected in the limiting groove, and the limiting ring being fixedly connected to the outer end of the iron sliding rod, a second spring being provided in the limiting groove, and the second spring being wound around the outer end of the iron sliding rod, and the iron sliding rod being squeezed by the thicker part of the PVC film, so that the iron sliding rod slides to the top of the sliding hole to attract the magnetic heat conductive sheet, so that the magnetic heat conductive sheet is closely attached to the ironing strip, and the limiting ring limits the iron sliding rod, and the iron sliding rod can be reset under the elastic force of the second spring.

[0021] (5) In this solution, the control strip also includes a shielding strip, which is fixedly connected to the inner wall of the sliding hole. The shielding strip can shield the magnetic attraction between the magnetic heat conductive sheet and the iron sliding rod.

[0022] (6) In the present solution, multiple ironing strips are fixedly connected with heat-resistant elastic threads. The multiple ironing strips are connected to each other by the heat-resistant elastic threads, so that the multiple ironing strips can be reset after being moved and are not easily broken. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the structure of the side section view of the utility model;

[0025] Figure 3 It is a structural schematic diagram of the control strip in the utility model.

[0026] Description of the numbers in the figure:

[0027] 1. Bottom plate; 2. Control frame; 3. Loading plate; 4. Thickness control plate; 41. Heating plate; 42. Heat conducting plate; 43. Control strip; 431. Ironing strip; 432. Reserved cavity; 433. Heat conducting telescopic rod; 434. Magnetic heat conducting sheet; 435. First spring; 436. Slide hole; 437. Iron slide bar; 438. Limiting groove; 439. Limiting ring; 4310. Second spring; 4311. Shielding strip; 5. Slide groove; 6. Sliding block; 7. Support rod; 8. Pressing roller. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] Embodiment 1:

[0032] See also Figure 1-3 , a thickness deviation control device for a PVC film calender comprises a bottom plate 1, a pair of control frames 2 are fixedly connected to the upper end of the bottom plate 1, a loading plate 3 is fixedly connected to the upper end of the bottom plate 1, and the loading plate 3 is located between the pair of control frames 2, a thickness control plate 4 is slidably connected between the pair of control frames 2, and the thickness control plate 4 is located above the loading plate 3, a pair of control frames 2 are each provided with a slide rail groove 5 at one end close to each other, a driving slide rail is installed in the slide rail groove 5, a slider 6 is slidably connected in the slide rail groove 5, and the slider 6 is fixedly connected to the thickness control plate 4, and the slider 6 is driven by the driving slide rail to drive the slider 6 to move in the slide rail groove 5, so as to adjust the spacing according to the thickness of the PVC film, a pair of support rods 7 are fixedly connected to the side ends of the loading plate 3 and the thickness control plate 4, a pressure roller 8 is rotatably connected between the pair of support rods 7, and the thicker part of the PVC film is heated by the thickness control plate 4 to make it softer, so that the thick part of the PVC film is easier to stretch, and the thin part is tougher and not easy to stretch and thinner, thereby effectively reducing the thickness deviation of the PVC film when it is stretched.

[0033] The thickness control plate 4 includes a heating plate 41, which is slidably connected between a pair of control frames 2. A heat conducting plate 42 is fixedly connected to the lower end of the heating plate 41. A mounting groove is provided at the lower end of the heat conducting plate 42. A plurality of control strips 43 are provided in the mounting groove. The heating plate 41 is electrically heated to transfer heat from the heat conducting plate 42 to the control strips 43, and the control strips 43 focus on heating the thicker parts.

[0034] The control strip 43 includes an ironing strip 431, which is arranged in the installation groove. A reserved cavity 432 is provided at the upper end of the ironing strip 431. A heat-conducting telescopic rod 433 is provided at the upper end of the reserved cavity 432, and the heat-conducting telescopic rod 433 is fixedly connected to the inner wall of the installation groove. A magnetic heat-conducting sheet 434 is fixedly connected to the lower end of the heat-conducting telescopic rod 433. A first spring 435 is wound around the outer end of the heat-conducting telescopic rod 433, and the first spring 435 is respectively fixedly connected to the inner wall of the installation groove and the magnetic heat-conducting sheet 434. The heat-conducting telescopic rod 433 is extended to drive the magnetic heat-conducting sheet 434 to stick to the ironing strip 431, so that heat is transferred downward, so that the high temperature directly heats the PVC film.

[0035] The control strip 43 also includes a sliding hole 436, which is provided in the middle of the ironing strip 431, and an iron sliding rod 437 is slidably connected in the sliding hole 436. A limiting groove 438 is provided on the inner wall of the sliding hole 436, and a limiting ring 439 is slidably connected in the limiting groove 438, and the limiting ring 439 is fixedly connected to the outer end of the iron sliding rod 437, and a second spring 4310 is provided in the limiting groove 438, and the second spring 4310 is wound around the outer end of the iron sliding rod 437, and the iron sliding rod 437 is squeezed by the thicker part of the PVC film, so that it slides to the top of the sliding hole 436 to attract the magnetic heat conductive sheet 434, so that the magnetic heat conductive sheet 434 is close to the ironing strip 431, and the limiting ring 439 limits the iron sliding rod 437, and the iron sliding rod 437 can be reset under the elastic force of the second spring 4310.

[0036] The control strip 43 further includes a shielding strip 4311 , which is fixedly connected to the inner wall of the slide hole 436 . The shielding strip 4311 can shield the magnetic attraction between the magnetic heat conductive sheet 434 and the iron slide bar 437 .

[0037] Heat-resistant elastic threads are fixedly connected between the multiple ironing strips 431. The multiple ironing strips 431 are connected to each other through the heat-resistant elastic threads, so that they can be reset after being moved and are not easy to break.

[0038] When using, please refer to Figure 1-3 , place the PVC film between the loading plate 3 and the thickness control plate 4, and then a pair of pressure rollers 8 rotate and pull the PVC film to move. At the same time, the thicker part of the PVC film squeezes the control strip 43, so that the iron slide bar 437 slides to the top of the slide hole 436 to attract the magnetic heat conductive sheet 434, so that the magnetic heat conductive sheet 434 is close to the ironing strip 431, and the heat transferred by the heat conductive plate 42 is fully conducted to heat the thicker part to make it softer. Compared with the conventional thickness deviation control device for PVC film calendering machine, the utility model can achieve the purpose of heating the thicker part of the PVC film by the thickness control plate 4 to make it softer, so that the thick part of the PVC film is easier to stretch, and the thin part is tougher and not easy to stretch and thinner, thereby effectively reducing the thickness deviation of the PVC film when stretched.

[0039] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A thickness deviation control device for a PVC film calender, comprising a bottom plate (1), characterized in that: The upper end of the bottom plate (1) is fixedly connected to a pair of control frames (2), the upper end of the bottom plate (1) is fixedly connected to a loading plate (3), and the loading plate (3) is located between the pair of control frames (2), a thickness control plate (4) is slidably connected between the pair of control frames (2), and the thickness control plate (4) is located above the loading plate (3), the thickness control plate (4) comprises a heating plate (41), the heating plate (41) is slidably connected between the pair of control frames (2), and the lower end of the heating plate (41) is fixedly connected to a heat conducting plate (42) The heat conducting plate (42) has a mounting groove at its lower end, and a plurality of control strips (43) are arranged in the mounting groove. A pair of control frames (2) are provided with a slide rail groove (5) at one end close to each other, and a driving slide rail is installed in the slide rail groove (5). A slider (6) is slidably connected in the slide rail groove (5), and the slider (6) is fixedly connected to the thickness control plate (4). A pair of support rods (7) are fixedly connected to the side ends of the loading plate (3) and the thickness control plate (4), and a pressure roller (8) is rotatably connected between the pair of support rods (7).

2. A thickness deviation control device for a PVC film calender according to claim 1, characterized in that: The control strip (43) comprises an ironing strip (431), wherein the ironing strip (431) is arranged in the installation groove, a reserved cavity (432) is arranged at the upper end of the ironing strip (431), a heat-conducting telescopic rod (433) is arranged at the upper end of the reserved cavity (432), and the heat-conducting telescopic rod (433) is fixedly connected to the inner wall of the installation groove, a magnetic heat-conducting sheet (434) is fixedly connected to the lower end of the heat-conducting telescopic rod (433), and a first spring (435) is wound around the outer end of the heat-conducting telescopic rod (433), and the first spring (435) is respectively fixedly connected to the inner wall of the installation groove and the magnetic heat-conducting sheet (434).

3. A thickness deviation control device for a PVC film calender according to claim 2, characterized in that: The control strip (43) further comprises a sliding hole (436), wherein the sliding hole (436) is provided in the middle of the ironing strip (431), wherein an iron sliding rod (437) is slidably connected in the sliding hole (436), wherein a limiting groove (438) is provided on the inner wall of the sliding hole (436), wherein a limiting ring (439) is slidably connected in the limiting groove (438), and wherein the limiting ring (439) is fixedly connected to the outer end of the iron sliding rod (437), wherein a second spring (4310) is provided in the limiting groove (438), and wherein the second spring (4310) is wound around the outer end of the iron sliding rod (437).

4. A thickness deviation control device for a PVC film calender according to claim 3, characterized in that: The control strip (43) further comprises a shielding strip (4311), wherein the shielding strip (4311) is fixedly connected to the inner wall of the sliding hole (436).

5. A thickness deviation control device for a PVC film calender according to claim 2, characterized in that: Heat-resistant elastic threads are fixedly connected between the plurality of ironing strips (431).

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