Three-combination type baffle device for calender

Abstract

The utility model discloses a three combined type material baffle device for calender, including the inner baffle and outer baffle of even vertical setting, is equipped with horizontal guide hole and horizontal screw hole of horizontal screw joint with horizontal guide bar sliding cooperation on outer baffle, its characterized in that: the middle baffle is equipped between the inner baffle and outer baffle, and the middle baffle is fixed and detachably connected between the inner baffle, and the upper and lower sliding connection is between the outer side of middle baffle and the inner side of outer baffle, and the upper flat plate is fixedly arranged on the upper end of outer baffle, and the lifting driver for driving the up-and-down movement of middle baffle is arranged on the upper flat plate. The utility model discloses three combined material baffle has the advantages of high strength, good sealing effect, long service life, and only needs to drive the inner baffle to move downward after wearing, ensures not to leak material, and the utility model realizes the best balance of safety, sealing, wear resistance and economy through the combination of three different materials and structures of inner baffle, middle baffle and outer baffle.

Description

Technical Field

[0001] This utility model belongs to the field of PVC calendering production technology, specifically relating to a three-combination baffle device for calendering machines. Background Technology

[0002] The baffle plate, seemingly simple yet crucial, is a key component of a calender. Its core function can be summarized as forming a closed area at both ends of the roll gap to control and limit the processing range of the material. Specifically: 1) Controlling width and shape: It is tightly installed at the left and right ends between the two relatively rotating front and rear rolls, preventing plastic (or rubber compound) from leaking out from both ends of the roll gap, thus precisely controlling the width and edge shape of the calendered sheet. 2) Forming an "accumulation zone": At the roll gap entrance, the material confined by the baffle plate forms a rotating "pile," called the accumulation zone. Good accumulation eliminates air bubbles and air trapped in the material, making the rubber compound denser. It also helps the material enter the roll gap evenly and continuously, ensuring the uniformity of the calendered sheet thickness. 3) Maintaining temperature and pressure stability: The closed space formed by the baffle plate helps maintain a stable temperature and pressure distribution in the roll gap area. If material leaks from the baffle plate, it will cause temperature and pressure fluctuations in that area, affecting product quality. 4) Adjustability and quick replacement: The first-out baffle has adjustable width of the two baffles at both ends of the roller gap and the clamping force between them and the roller end face. It also has quick replacement of the front baffle (sealing baffle).

[0003] Traditional baffles have a double-layer structure, including an inner baffle (in contact with the material) and an outer baffle. The inner baffle is responsible for sealing, while the outer baffle is responsible for fixing the inner baffle and adjusting its height. This type of baffle has the following disadvantages: 1) poor sealing, easy leakage of adhesive, affecting product quality; 2) due to the lack of a middle baffle, the overall wear resistance of the baffle is not high, the service life is short, and the cost is high. Utility Model Content

[0004] In order to solve the above-mentioned technical problems in the prior art, this utility model provides a three-combination baffle device for calenders with good sealing performance, high wear resistance and long service life.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a three-combination baffle device for a calender, comprising an inner baffle and an outer baffle, both vertically arranged. The outer baffle has a horizontal guide hole that slides with a horizontal guide rod and a horizontal threaded hole that is screwed to a horizontal lead screw. A middle baffle is provided between the inner baffle and the outer baffle. The middle baffle is fixedly and detachably connected to the inner baffle. The outer side of the middle baffle is slidably connected to the inner side of the outer baffle. An upper plate is fixedly provided at the upper end of the outer baffle. A lifting driver for driving the middle baffle to move up and down is provided on the upper plate.

[0006] The upper end of the middle baffle is fixedly provided with a lower plate that contacts the upper side of the inner baffle. The lower plate has a first threaded connection hole. The middle baffle and the inner baffle are connected as one unit by a first countersunk bolt. A dovetail slider is fixed on the front and rear sides of the upper part of the outer side of the middle baffle. The dovetail slider is connected to the middle baffle by a second countersunk bolt.

[0007] The lifting drive is a vertically positioned cylinder. The cylinder's extension rod passes downward through the upper plate and then extends into and screws into the first threaded connection hole on the lower plate.

[0008] The inner side of the outer baffle has two vertical dovetail grooves, and the two dovetail sliders on the outer side of the middle baffle are slidably connected in one of the dovetail grooves on the same side.

[0009] The upper plate has vertical guide holes that are open at the front and rear sides of the lifting drive, and the lower plate has second threaded connection holes that correspond one-to-one with the two vertical guide holes. Each of the two second threaded connection holes is threaded with a vertical guide rod that passes through the vertical guide hole on the same side.

[0010] The lower front and rear sides of the inner baffle are provided with symmetrical first arc structures, the lower front and rear sides of the middle baffle are provided with symmetrical second arc structures, and the lower front and rear sides of the outer baffle are provided with symmetrical third arc structures. The height of the first arc structure is lower than that of the second arc structure, and the height of the second arc structure is lower than that of the third arc structure.

[0011] By adopting the above technical solution, compared with the prior art, this utility model has the following technical effects: 1) The inner baffle is made of Teflon material, which is resistant to high temperature and has a certain degree of flexibility. The first arc structure of the inner baffle contacts the roller surfaces of the front and rear rollers respectively, providing a good sealing effect. The middle baffle is sturdy and wear-resistant, providing the main structural support and wear resistance for the inner baffle. The outer baffle is a metal structural component, which is connected to the calender frame through two horizontal guide rods and one horizontal lead screw, making it easy to adjust the entire baffle device along the axial direction of the front and rear rollers. The lifting drive at the top of the outer baffle applies downward pressure to ensure that the inner and middle baffles maintain a good seal with the roller surfaces.

[0012] 2) When the first arc structure of the inner plate wears down, the gap between it and the roller surface increases, causing leakage. At this time, the lifting drive telescopic rod can be activated to extend, driving the middle baffle and inner baffle to move down, so that the first arc structure on the front and rear sides of the lower part of the inner baffle keeps in contact with the roller surfaces of the front and rear rollers respectively, and has a good seal.

[0013] 3) The middle baffle and the outer baffle are slidably connected by a dovetail slider and a dovetail groove, so that the middle baffle can only move vertically and maintains a reliable connection with the outer baffle in all other directions.

[0014] 4) If the bolts connecting the components in this utility model fall off between the front and rear rollers, they will scratch the roller surface and cause a major safety accident. Therefore, this utility model sets the first countersunk bolt and the second countersunk bolt inside each baffle, so that the bolts will not loosen or come off during operation, thus ensuring safety and reliability of connection.

[0015] 5) When the dovetail slider moves down to the lower part of the dovetail groove, or even when part of the lower end of the dovetail slider extends out of the dovetail groove, the setting of the two vertical guide rods is equivalent to extending the length of the sliding connection between the middle baffle and the outer baffle, which plays a good guiding and stabilizing role.

[0016] In summary, the three-combination baffle of this utility model has the advantages of high strength, good sealing effect and long service life. Moreover, after wear, it only needs to move the inner baffle downward to ensure no leakage. This utility model achieves the best balance of safety, sealing, wear resistance and economy by combining three inner, middle and outer baffles of different materials and structures. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 A partial cross-sectional view of the left side; Figure 3 This is a schematic diagram of the inner baffle. Figure 4 This is a schematic diagram of the middle baffle. Figure 5 This is a schematic diagram of the outer baffle. Figure 6 This is a schematic diagram of the structure for the fixed connection between the inner baffle and the middle baffle. Detailed Implementation

[0018] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] like Figures 1-6As shown, this utility model discloses a three-combination baffle device for a calender, comprising an inner baffle 1 and an outer baffle 3, both vertically arranged. The outer baffle 3 has a horizontal guide hole 4 that slides with a horizontal guide rod and a horizontal threaded hole 5 that is screwed to a horizontal lead screw. A middle baffle 2 is provided between the inner baffle 1 and the outer baffle 3. The middle baffle 2 is fixedly and detachably connected to the inner baffle 1. The outer side of the middle baffle 2 is slidably connected to the inner side of the outer baffle 3. An upper plate 6 is fixedly provided on the upper end of the outer baffle 3. A lifting driver 7 for driving the middle baffle 2 to move up and down is provided on the upper plate 6.

[0020] The upper end of the middle baffle 2 is fixedly provided with a lower plate 8 that contacts the upper side of the inner baffle 1. The lower plate 8 is provided with a first threaded connection hole 9. The middle baffle 2 and the inner baffle 1 are connected as one unit by a first countersunk bolt 10. A dovetail slider 11 is fixedly provided on the front and rear sides of the upper part of the outer side of the middle baffle 2. The dovetail slider 11 is connected to the middle baffle 2 by a second countersunk bolt 12.

[0021] The lifting drive 7 is a vertically positioned cylinder. The cylinder's telescopic rod 22 extends downward through the upper plate 6 and then into the lower plate 8, where it is screwed into the first threaded connection hole 9.

[0022] The inner side of the outer baffle 3 has two vertical dovetail grooves 13, and the two dovetail sliders 11 on the outer side of the middle baffle 2 are slidably connected in one of the dovetail grooves 13 on the same side.

[0023] The upper plate 6 has vertical guide holes 14 that are open at the front and rear sides of the lifting drive 7, and the lower plate 8 has second threaded connection holes 15 that correspond one-to-one with the two vertical guide holes 14. Each of the two second threaded connection holes 15 is threaded with a vertical guide rod 16 that passes through the vertical guide hole 14 on the same side.

[0024] The inner baffle 1 has a symmetrical first arc structure 17 on the lower front and rear sides, the middle baffle 2 has a symmetrical second arc structure 18 on the lower front and rear sides, and the outer baffle 3 has a symmetrical third arc structure 19 on the lower front and rear sides. The height of the first arc structure 17 is lower than that of the second arc structure 18, and the height of the second arc structure 18 is lower than that of the third arc structure 19.

[0025] The working principle and technical effects of this utility model are as follows: 1) The inner baffle 1 is made of Teflon material, which is resistant to high temperature and has a certain degree of flexibility. The first arc structure 17 of the inner baffle 1 contacts the roller surfaces of the front roller 20 and the rear roller 21 respectively, which has a good sealing effect. The middle baffle 2 is sturdy and wear-resistant, providing the main structural support and wear resistance for the inner baffle 1. The outer baffle 3 is a metal structural component, which is connected to the calender frame through two horizontal guide rods and a horizontal lead screw, which facilitates the adjustment of the entire baffle device along the axial direction of the front and rear rollers 21. The lifting drive 7 on the upper part of the outer baffle 3 applies downward pressure to ensure that the inner baffle 1 and the middle baffle 2 maintain a good seal with the roller surface downward.

[0026] 2) When the first arc structure 17 of the inner plate wears down, the gap between it and the roller surface increases, and leakage may occur. At this time, the extension rod 22 of the lifting drive 7 can be activated to drive the middle baffle 2 and the inner baffle 1 to move down, so that the first arc structure 17 on the front and rear sides of the lower part of the inner baffle 1 keeps in contact with the roller surfaces of the front roller 20 and the rear roller 21 respectively and has a good seal.

[0027] 3) The middle baffle 2 and the outer baffle 3 are slidably connected by the dovetail slider 11 and the dovetail groove 13, so that the middle baffle 2 can only move vertically and maintains a reliable connection with the outer baffle 3 in other directions.

[0028] 4) The first countersunk bolt 10 and the second countersunk bolt 12 are both located inside each baffle, so that the bolts will not loosen or come off during operation, thus ensuring safety and the reliability of the connection.

[0029] 5) When the dovetail slider 11 moves down to the lower part of the dovetail groove, or even when a part of the lower end of the dovetail slider 11 extends out of the dovetail groove, the setting of the two vertical guide rods 16 is equivalent to extending the length of the sliding connection between the middle baffle 2 and the outer baffle 3, which plays a good guiding and stabilizing role.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A three-combination baffle device for a calender, comprising an inner baffle and an outer baffle, both vertically arranged, wherein the outer baffle has a horizontal guide hole for sliding cooperation with a horizontal guide rod and a horizontal threaded hole for screwing into a horizontal lead screw, characterized in that: A middle baffle is provided between the inner baffle and the outer baffle. The middle baffle is fixed and detachably connected to the inner baffle. The outer side of the middle baffle is slidably connected to the inner side of the outer baffle. An upper plate is fixedly provided at the upper end of the outer baffle. A lifting driver for driving the middle baffle to move up and down is provided on the upper plate.

2. The three-combination baffle device for a calender according to claim 1, characterized in that: The upper end of the middle baffle is fixedly provided with a lower plate that contacts the upper side of the inner baffle. The lower plate has a first threaded connection hole. The middle baffle and the inner baffle are connected as one unit by a first countersunk bolt. A dovetail slider is fixed on the front and rear sides of the upper part of the outer side of the middle baffle. The dovetail slider is connected to the middle baffle by a second countersunk bolt.

3. The three-combination baffle device for a calender according to claim 2, characterized in that: The lifting drive is a vertically positioned cylinder. The cylinder's extension rod passes downward through the upper plate and then extends into and screws into the first threaded connection hole on the lower plate.

4. The three-combination baffle device for a calender according to claim 2, characterized in that: The inner side of the outer baffle has two vertical dovetail grooves, and the two dovetail sliders on the outer side of the middle baffle are slidably connected in one of the dovetail grooves on the same side.

5. A three-combination baffle device for a calender according to any one of claims 1-4, characterized in that: The upper plate has vertical guide holes that are open at the front and rear sides of the lifting drive, and the lower plate has second threaded connection holes that correspond one-to-one with the two vertical guide holes. Each of the two second threaded connection holes is threaded with a vertical guide rod that passes through the vertical guide hole on the same side.

6. A three-combination baffle device for a calender according to any one of claims 1-4, characterized in that: The lower front and rear sides of the inner baffle are provided with symmetrical first arc structures, the lower front and rear sides of the middle baffle are provided with symmetrical second arc structures, and the lower front and rear sides of the outer baffle are provided with symmetrical third arc structures. The height of the first arc structure is lower than that of the second arc structure, and the height of the second arc structure is lower than that of the third arc structure.

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