A roll gap adjusting device for a six-roll calender

Abstract

The utility model provides a kind of roll gap adjusting device of adjustable distance six-roll calender, it is related to clearance adjusting technical field, including calender main body, the outer surface of calender main body is fixedly connected with support, the inner wall slidingly connected with adjusting mechanism of support, the adjusting mechanism includes bearing, the inner wall fixedly connected with first screw rod of bearing, first screw rod one end is equipped with first thread groove. The utility model, by designing the linkage structure that first screw rod two ends are equipped with different thread grooves cooperation first slider, second slider, and second screw rod cooperation third slider, fourth slider, staff only needs to rotate screw rod to drive multiple groups of slider synchronous to inboard gather or to outside spread, the structure can effectively offset the vibration generated when calender runs, avoid the position deviation of compression roller caused by loosening of limiting component, ensure the stability of roll gap during equipment working process.

Description

Technical Field

[0001] This utility model relates to the field of gap adjustment technology, and in particular to a roller gap adjustment device for an adjustable six-roll calender. Background Technology

[0002] Calenders are core equipment in the rubber and plastics industry used to press materials into sheets or films of specific thicknesses. Among them, six-roll calenders are widely used in the processing and production of high-precision, multi-level materials due to their advantage of multi-pass continuous calendering.

[0003] Traditional six-roll calenders often use a single screw-driven, single-slider structure for adjusting the gap between the rolls. This requires independent adjustment of the slider corresponding to each roll, making it difficult to ensure synchronized changes in the gap between multiple rolls during adjustment. This can easily lead to gap deviations and uneven thickness in the calendered products. While some devices employ a linked adjustment structure, the lack of buffer components in the transmission between the screw and the slider makes the slider prone to jamming due to mechanical friction, further reducing the accuracy of gap adjustment. Utility Model Content

[0004] The purpose of this invention is to solve the problem of poor adjustment accuracy in the traditional single-roll adjustment transmission of a six-roll calender in the prior art, and to provide an adjustable gap adjustment device for the roller gap of a six-roll calender.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a roller gap adjustment device for an adjustable-gap six-roll calender, comprising a calender body, a bracket fixedly connected to the outer surface of the calender body, an adjustment mechanism slidably connected to the inner wall of the bracket, the adjustment mechanism comprising a bearing, a first lead screw fixedly connected to the inner wall of the bearing, a first threaded groove formed at one end of the first lead screw, a first slider threadedly connected to the outer surface of the first threaded groove, a second threaded groove formed on the outer surface of the first lead screw, a second slider threadedly connected to the outer surface of the second threaded groove, a first spring slidably sleeved at one end of the first lead screw, and a second spring slidably sleeved at the other end of the first lead screw.

[0006] In a preferred embodiment, a second lead screw is rotatably connected to the inner wall of the bracket, a third slider is threaded to one end of the second lead screw, a third spring is fixedly connected to the outer surface of the third slider, and a fourth slider is threaded to the other end of the second lead screw, with a fourth spring fixedly connected to the inner wall of the fourth slider.

[0007] In a preferred embodiment, a limiting mechanism is engaged with the outer surface of the bracket, the limiting mechanism including a limiting hole, the inner wall of which is formed on the inner wall of the bracket.

[0008] In a preferred embodiment, the inner wall of the limiting hole is engaged with a limiting member, and the inner wall of the limiting member is slidably connected with a fixing rod.

[0009] In a preferred embodiment, the outer surface of the bearing is fixedly connected to the inner wall of the bracket.

[0010] In a preferred embodiment, a nut is threaded onto the outer surface of the fixing rod, and a limit spring is slidably sleeved on the outer surface of the fixing rod.

[0011] In a preferred embodiment, the outer surface of the first slider is slidably connected to the inner wall of the bracket, and a pressure roller is rotatably connected to the outer surface of the first slider.

[0012] In a preferred embodiment, the outer surface of the first lead screw is rotatably connected to the inner wall of the bracket.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows: This invention utilizes a linkage structure where different threaded grooves are opened at both ends of the first lead screw to cooperate with the first and second sliders, and the second lead screw cooperates with the third and fourth sliders. Operators only need to rotate the lead screw to drive multiple sliders to synchronously retract inwards or expand outwards, thereby synchronously adjusting the gap between the pressure rollers. This avoids the roller gap deviation problem caused by independent adjustment of a single slider in traditional methods, significantly improving the accuracy of gap adjustment and ensuring the uniformity of the calendered product's thickness. The limiting mechanism, through the engagement of the limiting component with the upper limit hole of the bracket and the elastic force of the limiting spring, achieves elastic locking of the slider position. Compared to the traditional bolt tightening method, this structure effectively counteracts the vibration generated during the operation of the calender, preventing pressure roller position displacement caused by loosening of the limiting components and ensuring the stability of the roller gap during equipment operation. Attached Figure Description

[0014] Figure 1 This utility model provides a schematic diagram of the structure of an adjustable gap six-roll calender roller gap adjustment device.

[0015] Figure 2 A schematic diagram of the adjustment structure of the roller gap adjustment device for an adjustable six-roll calender provided by this utility model.

[0016] Figure 3 A cross-sectional view of the adjustment structure of an adjustable gap six-roll calender provided by this utility model.

[0017] Figure 4 A cross-sectional view of the adjustment structure of an adjustable gap six-roll calender provided by this utility model.

[0018] Figure 5 This utility model provides an adjustable gap six-roll calender roll gap adjustment device. Figure 4 Enlarged view of point A in the middle.

[0019] Legend: 1. Calender body; 2. Support frame; 3. Adjustment mechanism; 4. Limiting mechanism; 5. Pressure roller; 3. Adjustment mechanism; 31. Bearing; 32. First lead screw; 33. First threaded groove; 34. First slider; 35. Second threaded groove; 36. Second slider; 37. First spring; 38. Second spring; 39. Second lead screw; 310. Third slider; 311. Third spring; 312. Fourth slider; 313. Fourth spring; 4. Limiting mechanism; 41. Limiting hole; 42. Limiting component; 43. Fixing rod; 44. Nut; 45. Limiting spring. Detailed Implementation

[0020] 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.

[0021] Example 1 like Figures 1-5 As shown, this utility model provides a technical solution: an adjustable gap six-roll calender gap adjustment device, including a calender body 1, a bracket 2 fixedly connected to the outer surface of the calender body 1, an adjustment mechanism 3 slidably connected to the inner wall of the bracket 2, the adjustment mechanism 3 including a bearing 31, the outer surface of the bearing 31 fixedly connected to the inner wall of the bracket 2, a first lead screw 32 fixedly connected to the inner wall of the bearing 31, the outer surface of the first lead screw 32 rotatably connected to the inner wall of the bracket 2, a first threaded groove 33 opened at one end of the first lead screw 32, a first slider 34 threadedly connected to the outer surface of the first threaded groove 33, and the outer surface of the first slider 34 slidably connected to the inner wall of the bracket 2. The wall has a first slider 34 with a pressure roller 5 rotatably connected to its outer surface. The outer surface of the first lead screw 32 has a second threaded groove 35, and the outer surface of the second threaded groove 35 is threaded with a second slider 36. One end of the first lead screw 32 is slidably sleeved with a first spring 37, and the other end of the first lead screw 32 is slidably sleeved with a second spring 38. The inner wall of the bracket 2 is rotatably connected with a second lead screw 39. One end of the second lead screw 39 is threaded with a third slider 310, and the outer surface of the third slider 310 is fixedly connected with a third spring 311. The other end of the second lead screw 39 is threaded with a fourth slider 312, and the inner wall of the fourth slider 312 is fixedly connected with a fourth spring 313.

[0022] In this embodiment, a bracket 2 is fixedly connected to the outer surface of the calender body 1. A bearing 31 fixed to the inner wall of the bracket 2 fixes the first lead screw 32 to its inner wall, allowing the first lead screw 32 to be rotatably connected to the inner wall of the bracket 2. A first threaded groove 33 is opened on one side of the first lead screw 32, which cooperates with the first slider 34 to thread the first slider 34 to the outer surface of the first lead screw 32. A second threaded groove 35 is opened on the other side of the first lead screw 32, which cooperates with the second slider 36 to thread the second slider 36 to the outer surface of the first lead screw 32. When the operator rotates the first lead screw 32, the first slider 34 and the second slider 36 slide inward or to the sides, and the pressure roller 5 is rotatably connected to the first slider 34 and the second slider. The inner wall of 36 adjusts the distance between the two pressure rollers 5 on the inner wall of the bracket 2. On the inner wall of the other bracket 2, the second lead screw 39 and the third spring 311 and the fourth spring 313, which are slidably sleeved on the outer surface of the second lead screw 39, use the elastic force of the springs to push the third slider 310 and the fourth slider 312 to slide, so that the sliders on both sides can cooperate with the first lead screw 32 to slide. The third slider 310 and the fourth slider 312, which are threaded on the outer surface of the second lead screw 39, can slide inward or outward when the operator rotates the second lead screw 39. Under the elastic force of the first spring 37 and the second spring 38, which are slidably sleeved on the first lead screw 32, the two sliders drive the pressure rollers 5 to slide more smoothly, thereby adjusting the gap between the pressure rollers 5.

[0023] Example 2 like Figures 1-5 As shown, the outer surface of the bracket 2 is engaged with a limiting mechanism 4. The limiting mechanism 4 includes a limiting hole 41. The inner wall of the limiting hole 41 is opened in the inner wall of the bracket 2. The inner wall of the limiting hole 41 is engaged with a limiting member 42. The inner wall of the limiting member 42 is slidably connected to a fixing rod 43. The outer surface of the fixing rod 43 is threaded with a nut 44. The outer surface of the fixing rod 43 is slidably sleeved with a limiting spring 45.

[0024] In this embodiment, the limiting mechanism 4 is engaged with the outer surface of the bracket 2. The limiting hole 41 is opened in the bracket 2, and the limiting member 42 is engaged with the limiting hole 41. The inner wall of the limiting member 42 is slidably connected to the fixing rod 43, which is fixedly connected to the outer surface of the first slider 34. The limiting member 42 is engaged with the inside of the limiting hole 41 by the threaded nut 44. The limiting spring 45 is sleeved on the outer surface of the fixing rod 43. When the rotating nut 44 pushes the limiting member 42 to slide, the limiting member 42 disengages from the limiting hole 41, and the pressure roller 5 can move.

[0025] Working principle: like Figures 1-5 As shown, when the operator rotates the first lead screw 32, under the action of the threaded transmission, the first slider 34 and the second slider 36 will synchronously retract inward or expand outward along the axis of the lead screw, thereby driving the connected pressure roller 5 to move, realizing the adjustment of the basic gap between the two sets of pressure rollers 5. The first spring 37 and the second spring 38 sleeved at both ends of the first lead screw 32 can offset the frictional resistance when the slider slides by utilizing the elastic force of elastic deformation, making the sliding process of the slider driving the pressure roller 5 smoother. The second lead screw 39 rotatably connected to the inner wall of the other bracket 2 has its two ends threadedly connected to the third slider 310 and the fourth slider 312 respectively. The outer surface of the third slider 310 is fixed with the third spring 311, and the inner wall of the fourth slider 312 is fixed with the fourth spring 313. When the operator rotates the second lead screw 39, the third slider 310 and the fourth slider 312 will slide inward or outward along the axis of the lead screw, cooperating with the third The elastic force of the fourth spring 313 pushes the two sets of sliders to form a linkage with the slider driven by the first lead screw 32, further fine-tuning the gap of the pressure rollers 5. At the same time, the elasticity of the spring also allows the slider to better fit the position change of the pressure rollers 5 during the adjustment process, ensuring that the gap adjustment between the four rollers is accurate and synchronous. The inner wall of the bracket 2 is provided with multiple limiting holes 41. The outer surface of the first slider 34 is fixed with a fixing rod 43. The fixing rod 43 is slidably sleeved with a limiting component 42 and a limiting spring 45, and the end of the fixing rod 43 is threaded with a nut 44. When the gap of the pressure rollers 5 is adjusted to the target position, the elastic force of the limiting spring 45 pushes the limiting component 42 into the corresponding limiting hole 41 of the bracket 2. Then, the nut 44 is tightened, and the axial pressure of the nut 44 firmly presses the limiting component 42 into the limiting hole 41, so that the first slider 34 cannot slide along the bracket 2, thereby locking the position of the pressure rollers 5.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A roller gap adjustment device for an adjustable-gap six-roll calender, comprising a calender body (1), characterized in that: The outer surface of the main body (1) of the calender is fixedly connected to a bracket (2), and the inner wall of the bracket (2) is slidably connected to an adjustment mechanism (3). The adjustment mechanism (3) includes a bearing (31), and the inner wall of the bearing (31) is fixedly connected to a first lead screw (32). One end of the first lead screw (32) is provided with a first threaded groove (33), and the outer surface of the first threaded groove (33) is threadedly connected to a first slider (34). The outer surface of the first lead screw (32) is provided with a second threaded groove (35), and the outer surface of the second threaded groove (35) is threadedly connected to a second slider (36). One end of the first lead screw (32) is slidably sleeved with a first spring (37), and the other end of the first lead screw (32) is slidably sleeved with a second spring (38).

2. The roll gap adjustment device for an adjustable-gap six-roll calender according to claim 1, characterized in that: The inner wall of the bracket (2) is rotatably connected to a second lead screw (39), one end of the second lead screw (39) is threadedly connected to a third slider (310), the outer surface of the third slider (310) is fixedly connected to a third spring (311), the other end of the second lead screw (39) is threadedly connected to a fourth slider (312), and the inner wall of the fourth slider (312) is fixedly connected to a fourth spring (313).

3. The roll gap adjustment device for an adjustable-gap six-roll calender according to claim 1, characterized in that: The outer surface of the bracket (2) is engaged with a limiting mechanism (4), the limiting mechanism (4) includes a limiting hole (41), the inner wall of the limiting hole (41) is opened on the inner wall of the bracket (2).

4. The roll gap adjustment device for an adjustable-gap six-roll calender according to claim 3, characterized in that: The inner wall of the limiting hole (41) is engaged with a limiting member (42), and the inner wall of the limiting member (42) is slidably connected with a fixing rod (43).

5. The roll gap adjustment device for an adjustable-gap six-roll calender according to claim 1, characterized in that: The outer surface of the bearing (31) is fixedly connected to the inner wall of the bracket (2).

6. The roll gap adjustment device for an adjustable-gap six-roll calender according to claim 4, characterized in that: The outer surface of the fixing rod (43) is threaded with a nut (44), and the outer surface of the fixing rod (43) is slidably sleeved with a limit spring (45).

7. The roll gap adjustment device for an adjustable-gap six-roll calender according to claim 1, characterized in that: The outer surface of the first slider (34) is slidably connected to the inner wall of the bracket (2), and the outer surface of the first slider (34) is rotatably connected to the pressure roller (5).

8. The roll gap adjustment device for an adjustable-gap six-roll calender according to claim 1, characterized in that: The outer surface of the first lead screw (32) is rotatably connected to the inner wall of the bracket (2).

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