阅读说明：本技术 一种压延设备及应用该设备的压延工艺 (Calendering equipment and calendering process applying same ) 是由 张延� 孙爱祥 窦兰月 于 2021-10-12 设计创作，主要内容包括：本申请涉及一种压延设备及应用该设备的压延工艺,涉及硅胶片制备的领域,压延设备包括第一辊轴和第二辊轴,还包括驱动第一辊轴和第二辊轴相向转动的驱动组件,第一辊轴和第二辊轴之间穿设有保护膜,所述保护膜与第一辊轴之间留有用于硅胶原料经过的间隙,所述第一辊轴的转速大于第二辊轴的转速。本申请具有减小成型的硅胶片出现气孔的情况发生的效果。(The utility model relates to a calendering equipment and use calendering technology of this equipment relates to the field of silica gel piece preparation, and calendering equipment includes first roller and second roller, still includes the first roller of drive and second roller pivoted drive assembly in opposite directions, wears to be equipped with the protection film between first roller and the second roller, leave the clearance that is used for the silica gel raw materials to pass through between protection film and the first roller, the rotational speed of first roller is greater than the rotational speed of second roller. This application has the effect that the condition that reduces fashioned silica gel piece appearance gas pocket takes place.)

1. The utility model provides a calendering equipment, includes first roller (3) and second roller (4), still includes first roller of drive (3) and second roller (4) pivoted drive assembly (5) in opposite directions, wears to be equipped with protection film (6) between first roller (3) and second roller (4), its characterized in that, leave the clearance that is used for the silica gel raw materials to pass through between protection film (6) and first roller (3), the rotational speed of first roller (3) is greater than the rotational speed of second roller (4).

2. The calendering apparatus as recited in claim 1, wherein the driving assembly (5) comprises a first gear (51) fixedly connected with one end of the first roller shaft (3), and further comprises a second gear (52) fixedly connected with one end of the second roller shaft (4), the first gear (51) and the second gear (52) are meshed with each other, the diameter of the first gear (51) is smaller than that of the second gear (52), and a driving motor (53) for driving the first roller shaft (3) or the second roller shaft (4) to rotate is connected to the first roller shaft (3) or the second roller shaft (4).

3. A calendering apparatus according to claim 2, wherein a support plate (1) is provided on each side of said first roller (3), wherein rotate on one of them backup pad (1) and be connected with transition axle (54), first gear (51) fixed connection is in the one end of transition axle (54), the other end fixedly connected with driving gear (55) of transition axle (54), the one end fixedly connected with of first roller (3) and driven gear (56) of driving gear (55) meshing, ring channel (11) have all been seted up to the one side that two backup pads (1) are close to each other, ring channel (11) and transition axle (54) coaxial setting, the both ends of first roller (3) are pegged graft with a corresponding ring channel (11) slip respectively, connect on first roller (3) and drive first roller (3) around axis pivoted adjusting part (8) of transition axle (54).

4. The calendering equipment as recited in claim 3, wherein the adjusting component (8) comprises an adjusting column (81) rotatably connected with the support plate (1) far away from the transition shaft (54), the adjusting column (81) is coaxially arranged with the transition shaft (54), the adjusting column (81) is arranged towards the direction close to the first roll shaft (3), one end of the first roll shaft (3) far away from the driven gear (56) is rotatably connected with a sliding block (9), the sliding block (9) is slidably inserted with an annular groove (11) far away from the driven gear (56), a connecting rod (82) is fixedly connected between the adjusting column (81) and the sliding block (9), a locking hole (12) is formed on one side surface of the support plate (1) far away from the sliding block (9) and connected with the adjusting column (81), and a first through hole (811) and a second through hole (812) are sequentially formed on the adjusting column (81) towards the direction close to the locking hole (12), the second through hole (812) is communicated with the locking hole (12), a locking gear (83) is meshed in the locking hole (12), one side face, close to the adjusting column (81), of the locking gear (83) is fixedly connected with an adjusting rod (84), and a locking section (841) meshed with the first through hole (811) is arranged on the adjusting rod (84);

when the locking gear (83) is inserted into the second through hole (812) and is separated from the locking hole (12), the adjusting column (81) is separated from the locked state.

5. A calendering device according to claim 4, wherein the outer ring of the sliding block (9) is provided with a side elastic layer (91), the elastic layer (91) being pressed by an annular groove (11) in sliding engagement with the sliding block (9).

6. A calendering apparatus according to claim 1, wherein a plurality of traction wheels (71) are provided on one side of said first roller (3), said traction wheels (71) are closely attached to said protective film (6), and a control motor for driving said traction wheels (71) to rotate is connected to said traction wheels (71).

7. The calendering process applying the equipment is characterized by comprising the following steps:

s1, feeding the silica gel raw material from one end, far away from the traction wheel (71), of the first roll shaft (3);

s2, starting a driving motor (53) and a control motor, wherein the first roller shaft (3) and the second roller shaft (4) rotate oppositely to extrude the silica gel raw material, and the control motor drives a traction wheel (71) to rotate so as to pull a protective film (6) to move from the first roller shaft (3) to the direction of the traction wheel (71);

and S3, vulcanizing the molded silica gel sheet.

8. The calendering process using the apparatus as set forth in claim 7, wherein the following steps are added before the step S1:

the adjusting rod (84) is pulled in the direction far away from the locking hole (12), the adjusting rod (84) drives the locking gear (83) to move until the locking gear (83) is separated from the locking hole (12) and is meshed with the second through hole (812), then the adjusting rod (84) is rotated, the adjusting rod (84) rotates the adjusting column (81) to rotate, the adjusting column (81) rotates to drive the connecting rod (82), the sliding block (9) and the first roller shaft (3) to rotate around the axis of the adjusting column (81), and at the moment, the first roller shaft (3) moves in the direction far away from or close to the second roller shaft (4);

after the distance between the first roll shaft (3) and the second roll shaft (4) is adjusted, the adjusting rod (84) is pushed towards the direction close to the locking hole (12) until the locking gear (83) is meshed with the locking hole (12).

Technical Field

The application relates to the field of silica gel sheet preparation, in particular to calendering equipment and a calendering process using the same.

Background

In the conventional liquid silica gel calendering technology, a silica gel raw material is generally squeezed between an upper protective film and a lower protective film from a fluid state, the upper protective film and the lower protective film are positioned between a pair of roll shafts, and the upper protective film and the lower protective film are squeezed with each other through the pair of roll shafts to form a silica gel sheet.

The upper and lower protective films are used for continuous rolling operation on equipment with upper and lower rollers, and the upper and lower protective films move together with the manufactured silica gel sheet, so that the formed silica gel sheet is convenient to transfer in the operation.

In view of the above-mentioned related technologies, the inventor believes that the silica gel raw material rolls in the rolling process and is easily coated and brought into the air, the silica gel sheet is rolled and formed between the upper protective film and the lower protective film, the upper protective film and the lower protective film belong to a relatively closed space in the process of rolling the silica gel raw material by the pair of rollers, the air brought into the silica gel raw material is difficult to be effectively discharged, and further the formed silica gel sheet is easy to form air holes.

Disclosure of Invention

In order to reduce the condition emergence of fashioned silica gel piece appearance gas pocket, this application provides the calendering technology of calendering equipment and applied this equipment.

In a first aspect, the present application provides a calendering apparatus, which adopts the following technical solution:

the utility model provides a calendering equipment, includes first roller and second roller, still includes the first roller of drive and the second roller is to pivoted drive assembly, wears to be equipped with the protection film between first roller and the second roller, leave the clearance that is used for the silica gel raw materials to pass through between protection film and the first roller, the rotational speed of first roller is greater than the rotational speed of second roller.

By adopting the technical scheme, the silica gel raw material is fed between the first roller shaft and the protective film, and the driving assembly is started simultaneously, so that the driving assembly drives the first roller shaft and the second roller shaft to rotate oppositely, and the silica gel raw material can be extruded by the first roller shaft and the second roller shaft to form a silica gel sheet; in this in-process, thereby the protection film drives the silica gel piece along with the silica gel piece moves together and breaks away from first roller and second roller, because the rotational speed of first roller is greater than the rotational speed of second roller, first roller can play certain effect of paining, scraping to the silica gel raw materials, and the air in the silica gel raw materials is gone into by the cladding this moment, can obtain the emission to a certain extent at the in-process of calendering, and the condition that the gas pocket appears in the silica gel piece that reduces the shaping takes place.

Preferably, the driving assembly comprises a first gear fixedly connected with one end of the first roll shaft and a second gear fixedly connected with one end of the second roll shaft, the first gear is meshed with the second gear, the diameter of the first gear is smaller than that of the second gear, and a driving motor for driving the first roll shaft or the second roll shaft to rotate is connected to the first roll shaft or the second roll shaft.

Through adopting above-mentioned technical scheme, start driving motor, driving motor drives first gear and second gear and rotates in opposite directions, and first gear and second gear rotate in opposite directions can drive first roller and second roller and rotate in opposite directions, are convenient for carry out the calendering to the silica gel raw materials.

Preferably, the both sides of first roller are equipped with a backup pad respectively, rotate in one of them backup pad and be connected with the transition axle, first gear fixed connection is in the one end of transition axle, the other end fixedly connected with driving gear of transition axle, the one end fixedly connected with and the driven gear of driving gear meshing of first roller, the ring channel has all been seted up to the one side that two backup pads are close to each other, the ring channel is with the coaxial setting of transition axle, the both ends of first roller are pegged graft with a corresponding ring channel slip respectively, connect the first roller of drive on the first roller around the axis pivoted adjusting part of transition axle.

Through adopting above-mentioned technical scheme, take place to rotate around the axis of transition axle through the first roller of adjusting part control, distance between adjustable first roller and the second roller, so adjustable fashioned silica gel sheet's thickness. In the process that the first roll shaft rotates around the axis of the transition shaft, the annular groove provides a guiding function for the movement of the first roll shaft; and the first roll shaft and the second roll shaft can relatively rotate through the meshing of the driving gear and the driven gear, and the first roll shaft and the second roll shaft can normally bypass the transition shaft to rotate.

Preferably, the adjusting assembly comprises an adjusting column which is rotatably connected with a supporting plate far away from the transition shaft, the adjusting column and the transition shaft are coaxially arranged, the adjusting column is arranged towards the direction close to the first roller shaft, one end, far away from the driven gear, of the first roller shaft is rotatably connected with a sliding block, the sliding block is in sliding insertion connection with an annular groove far away from the driven gear, a connecting rod is fixedly connected between the adjusting column and the sliding block, a locking hole is formed in one side surface, far away from the sliding block, of the supporting plate connected with the adjusting column, a first through hole and a second through hole are sequentially formed in the adjusting column towards the direction close to the locking hole, the second through hole is communicated with the locking hole, a locking gear is meshed in the locking hole, an adjusting rod is fixedly connected to one side surface, close to the adjusting column, of the locking gear, and a locking section meshed with the first through hole is arranged on the adjusting rod;

when the locking gear is inserted into the second through hole and separated from the locking hole, the adjusting column is separated from the locked state.

By adopting the technical scheme, when the distance between the first roller shaft and the second roller shaft needs to be adjusted, the adjusting rod is pulled in the direction away from the locking hole, and drives the locking gear to be separated from the locking hole and be inserted into the second through hole; the locking section keeps the state with the inner gearing of first through-hole simultaneously, rotates the regulation pole, and the regulation pole rotates and drives the regulation post and rotate, adjusts the post and rotates then to drive the sliding block through the connecting rod and rotate, and the sliding block rotates and to drive the axis rotation of first roller axle sleeve transition axle, and then is convenient for adjust the distance between first roller and the second roller.

Preferably, the outer ring of the sliding block is provided with an elastic layer on one side, and the elastic layer is tightly pressed by an annular groove in sliding insertion connection with the sliding block.

Through adopting above-mentioned technical scheme, the elastic layer is sticis by corresponding ring channel for being connected of sliding block and ring channel is comparatively stable, and when being convenient for adjust the post and drive the sliding block and rotate, the sliding block is gliding slow in the ring channel, reduces the gliding comparatively agility of sliding block in the ring channel, leads to the too big or undersize condition emergence of interval adjusted in the twinkling of an eye between first roller and the second roller.

Preferably, one side of the first roll shaft is provided with a plurality of traction wheels, the traction wheels are tightly attached to the protective film, and the traction wheels are connected with a control motor for driving the traction wheels to rotate.

Through adopting above-mentioned technical scheme, the start control motor drives the traction wheel and rotates, and the traction wheel rotates and can stimulate the comparatively smooth removal of protection film, and then is convenient for the protection film to drive silica gel raw materials material loading and drive fashioned silica gel piece unloading.

In a second aspect, the present application provides a rolling apparatus, which adopts the following technical solution:

the calendering process applying the equipment comprises the following steps:

s1, feeding the silica gel raw material from one end, far away from the traction wheel, of the first roller shaft;

s2, starting a driving motor and a control motor, wherein the first roller shaft and the second roller shaft rotate oppositely to extrude the silica gel raw material, and the control motor drives a traction wheel to rotate so as to pull the protective film to move from the first roller shaft to the traction wheel;

and S3, carrying out high-temperature vulcanization treatment on the molded silica gel sheet.

Through adopting above-mentioned technical scheme, the calendering molding silica gel piece of being convenient for, and first roller direct contact silica gel raw materials, the gas of being convenient for sneaking into in the silica gel raw materials extrudes the discharge.

Preferably, the following steps are added before step S1:

pulling the adjusting rod in the direction far away from the locking hole, driving the locking gear to move by the adjusting rod until the locking gear is separated from the locking hole and is meshed with the second through hole, then rotating the adjusting rod, rotating the adjusting rod to rotate the adjusting column, driving the connecting rod, the sliding block and the first roller shaft to rotate around the axis of the adjusting column by the rotation of the adjusting column, and driving the first roller shaft to move in the direction far away from or close to the second roller shaft;

after the distance between the first roller shaft and the second roller shaft is adjusted, the adjusting rod is pushed towards the direction close to the locking hole until the locking gear is meshed with the locking hole.

Through adopting above-mentioned technical scheme, be convenient for adjust the distance between first roller and the second roller, and then be convenient for control the silica gel piece of the different thickness of shaping.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the first roll shaft can play a certain smearing and scraping role on the silica gel raw material, and air coated in the silica gel raw material can be discharged to a certain extent in the calendering process, so that the occurrence of air holes in the formed silica gel sheet is reduced;

2. and adjusting the distance between the first roller shaft and the second roller shaft to adjust the thickness of the formed silica gel sheet.

Drawings

Fig. 1 is a schematic view of the overall structure of a tandem rolling apparatus according to an embodiment of the present application.

FIG. 2 is a schematic diagram of a position of a mounting plate according to an embodiment of the present application.

FIG. 3 is a cross-sectional view of a two-stage conventional calendering apparatus according to an embodiment of the present application.

FIG. 4 is a schematic view of a damper assembly according to an embodiment of the present application.

Description of reference numerals: 1. a support plate; 11. an annular groove; 12. a locking hole; 2. a supporting seat; 3. a first roller shaft; 31. a first rotating shaft; 4. a second roller shaft; 41. a second rotating shaft; 5. a drive assembly; 51. a first gear; 52. a second gear; 53. a drive motor; 54. a transition shaft; 55. a driving gear; 56. a driven gear; 6. a protective film; 7. a traction shaft; 71. a traction wheel; 8. an adjustment assembly; 81. an adjustment column; 811. a first through hole; 812. a second through hole; 82. a connecting rod; 83. a locking gear; 84. adjusting a rod; 841. a locking section; 9. a slider; 91. an elastic layer; 10. and (7) mounting the plate.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses calendering equipment.

Example one

Referring to fig. 1, the calendering equipment includes supporting seat 2 and two backup pads 1 that vertical direction set up, and the lower extreme of two backup pads 1 all is connected with the last fixed surface of supporting seat 2. A first roller shaft 3 and a second roller shaft 4 which are arranged up and down are arranged between the two supporting plates 1.

The first pivot 31 of the equal fixedly connected with in both ends of first roller 3, the one end that first roller 3 was kept away from to every first pivot 31 all rotates with a corresponding backup pad 1 to be connected. Both ends of the second roller 4 are fixedly connected with second rotating shafts 41, and one end of each second rotating shaft 41 far away from the second roller 4 is rotatably connected with a corresponding supporting plate 1. The first roller shaft 3 and the second roller shaft 4 are connected with a driving assembly 5 which drives the first roller shaft 3 and the second roller shaft 4 to rotate oppositely.

A protective film 6 in a tensioning state penetrates between the first roll shaft 3 and the second roll shaft 4, the protective film 6 is tightly attached to the second roll shaft 4, and a gap is reserved between the first roll shaft 3 and the protective film 6. The rotation speed of the first roller shaft 3 is greater than that of the second roller shaft 4.

Liquid silica gel raw materials enter between first roller 3 and the second roller 4 along protection film 6 gradually, simultaneously through drive assembly 5 drive first roller 3 and second roller 4 rotate in opposite directions, thereby first roller 3 and second roller 4 extrude the silica gel raw materials and form the silica gel piece. The clearance between first roller 3 and the second roller 4 is the thickness of fashioned silica gel piece promptly, and fashioned silica gel piece is under the drive of protection film 6 towards the direction motion of keeping away from first roller 3, second roller 4, so accomplish the unloading of silica gel piece promptly.

Because the rotational speed of first roller 3 is very fast, and the first roller of silica gel raw materials direct contact 3, the very fast first roller of rotational speed 3 can play certain effect of paining, scraping to the silica gel raw materials, and the air in the silica gel raw materials is advanced by the cladding this moment, can obtain emission to a certain extent at the in-process of calendering.

One of the first shafts 31 penetrates the corresponding supporting plate 1, and the other second shaft 41 also penetrates the corresponding supporting plate 1. The driving assembly 5 comprises a first gear 51 fixedly connected with one end of the first rotating shaft 31 far away from the first roller shaft 3, and further comprises a second gear 52 fixedly connected with one end of the second rotating shaft 41 far away from the second roller shaft 4, the first gear 51 and the second gear 52 are meshed with each other, and the diameter of the first gear 51 is smaller than that of the second gear 52. The gear ratio of the first gear 51 and the second gear 52 in the embodiment of the present application is 1/1.15.

The driving assembly 5 further comprises a driving motor 53 fixedly connected with the second rotating shaft 41 far away from the second gear 52, the driving motor 53 is installed on the corresponding supporting plate 1, and an output shaft of the driving motor 53 is coaxially arranged with the second rotating shaft 41.

When the driving motor 53 is started, the output shaft of the driving motor 53 rotates to drive the second rotating shaft 41 and the second roller shaft 4 to rotate, and at this time, the second roller shaft 4 drives the first roller shaft 3 to rotate through the second gear 52 and the first gear 51. So realized the rotation in opposite directions of first roller 3 and second roller 4 promptly, and realized the purpose that the rotational speed of first roller 3 is greater than second roller 4.

A traction shaft 7 is rotatably connected between the two supporting plates 1, and the traction shaft 7 is positioned on one side of the first roll shaft 3 far away from the silica gel raw material feeding position. Two traction wheels 71 are fixedly connected to the traction shaft 7, and the two traction wheels 71 are located above the protective film 6 and tightly abut against the protective film 6. The molded silicone sheet is transferred between two traction wheels 71, and a control motor (not shown) for driving the traction shaft 7 to rotate is connected to the traction shaft 7.

When control motor drive pulls axle 7 and rotates, pull axle 7 and drive two traction wheels 71 and rotate, and traction wheel 71 rotates and can stimulate protection film 6 and move towards the direction of traction wheel 71 by first roller 3, and the protection film 6 of being convenient for removes, and then drives the direction motion of silica gel piece towards keeping away from first roller 3, second roller 4.

Referring to fig. 2, a pair of mounting plates 10 is disposed between the two support plates 1, the pair of mounting plates 10 are respectively disposed at both sides of the first roller shaft 3, and each mounting plate 10 is disposed below the protective film 6 and abuts against the protective film 6. The mounting plate 10 provides a certain supporting force for the protective film 6.

Example two

The difference from the first embodiment is that, referring to fig. 3, the rolling device includes a transition shaft 54 rotatably connected to the support plate 1 adjacent to the second gear 52, and the first gear 51 is fixedly connected to an end of the transition shaft 54 adjacent to the second gear 52. One end of the transition shaft 54 far away from the first gear 51 is fixedly connected with a driving gear 55, and the first gear 51, the driving gear 55 and the transition shaft 54 are coaxially arranged. A driven gear 56 is fixedly connected to the first rotating shaft 31 close to the driving gear 55, the driven gear 56 is meshed with the driving gear 55, and the diameters of the driven gear 56 and the driving gear 55 are the same.

In order to adjust the distance between the first roller shaft 3 and the second roller shaft 4 and further adjust the thickness of the formed silica gel sheet, an adjusting component 8 for adjusting the first roller shaft 3 to rotate around the axis of the transition shaft 54 is connected to one of the support plates 1.

Referring to fig. 3 and 4, an annular groove 11 is respectively formed on one side surface of each of the two support plates 1, which is close to each other, and the annular groove 11 is concentrically arranged with the transition shaft 54. The first rotating shaft 31 connected with the driven gear 56 is inserted into one of the annular grooves 11, the other first rotating shaft 31 is rotatably connected with a sliding block 9, and the sliding block 9 is coaxially arranged with the first rotating shaft 31. The sliding block 9 is in sliding insertion connection with the annular groove 11 far away from the driven gear 56, the outer ring of the sliding block 9 is provided with an elastic layer 91 on one side, and the elastic layer 91 tightly abuts against the surface wall of the annular groove 11.

The adjusting assembly 8 comprises an adjusting column 81 which is rotatably connected with the supporting plate 1 far away from the driven gear 56, the adjusting column 81 is arranged towards the direction close to the first roller shaft 3, the adjusting column 81 is coaxially arranged with the transition shaft 54, and a connecting rod 82 is fixedly connected between the side wall of the adjusting column 81 and the side wall of the sliding block 9. The adjusting column 81 is sequentially provided with a first through hole 811 and a second through hole 812 towards the direction away from the first roller shaft 3, the first through hole 811, the second through hole 812 and the adjusting column 81 are coaxially arranged, and the first through hole 811 is communicated with the second through hole 812.

One side face, away from the first roller shaft 3, of the support plate 1 connected with the sliding block 9 is provided with a locking hole 12, and the locking hole 12 is communicated with the second through hole 812 and is coaxially arranged with the second through hole. The aperture of the locking hole 12 is the same as that of the second through hole 812, and the aperture of the second through hole 812 is larger than that of the first through hole 811. A lock gear 83 is provided in the lock hole 12, and the lock gear 83 is engaged with the lock hole 12. An adjusting rod 84 is fixedly connected to one side surface of the locking gear 83 close to the adjusting column 81, and one end of the adjusting rod 84 far from the locking gear 83 sequentially passes through the second through hole 812 and the first through hole 811 and extends out of the adjusting column 81. The adjustment lever 84 includes a locking section 841 engaged with the first through hole 811, and the adjustment post 81 is rotated when the locking gear 83 is disengaged from the locking hole 12 and is completely inserted into the second through hole 812.

When the distance between the first roller shaft 3 and the second roller shaft 4 needs to be adjusted, the adjustment lever 84 is pulled in a direction away from the locking hole 12, and the adjustment lever 84 drives the locking gear 83 to move in a direction away from the locking hole 12. When the locking gear 83 is disengaged from the locking hole 12 and inserted into the second through hole 812, the adjustment lever 84 is rotated, the adjustment lever 84 rotates to drive the adjustment post 81 to rotate, and the adjustment post 81 rotates to drive the connecting rod 82 and the sliding block 9 to rotate. The sliding block 9 rotates to drive the first roller shaft 3 to rotate towards the direction close to or away from the second roller shaft 4, so that the distance between the first roller shaft 3 and the second roller shaft 4 can be adjusted conveniently.

When the first roller shaft 3 rotates to a desired position, the adjustment lever 84 is pushed in a direction approaching the locking hole 12, and the adjustment lever 84 drives the locking gear 83 to move in a direction approaching the locking hole 12 until the locking gear 83 engages with the locking hole 12, so that the adjustment column 81 is hard to rotate, and the position of the first roller shaft 3 is locked.

The embodiment of the application also discloses a calendering process applying the equipment, which comprises the following steps:

s1, the adjusting rod 84 is pulled in the direction away from the locking hole 12, the adjusting rod 84 drives the locking gear 83 to move until the locking gear 83 is separated from the locking hole 12 and is inserted into the second through hole 812, the adjusting rod 84 can be rotated at the moment, the adjusting rod 84 rotates the adjusting column 81 to rotate, the adjusting column 81 rotates to drive the connecting rod 82, the sliding block 9 and the first roller shaft 3 to rotate around the axis of the adjusting column 81, and at the moment, the first roller shaft 3 moves in the direction away from or close to the second roller shaft 4.

S2, when the distance between the first roller shaft 3 and the second roller shaft 4 reaches the required distance, the adjustment lever 84 is pushed in the direction approaching the locking hole 12 until the locking gear 83 engages with the locking hole 12.

S3, loading the silica gel raw material from one end of the first roller shaft 3 far away from the traction wheel 71, starting the driving motor 53 and the control motor simultaneously, extruding the silica gel raw material by rotating the first roller shaft 3 and the second roller shaft 4 oppositely, driving the traction shaft 7 and the traction wheel 71 to rotate by the control motor, and pulling the protective film 6 to move towards the traction wheel 71 from the first roller shaft 3.

And S4, carrying out high-temperature vulcanization treatment on the molded silica gel sheet.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.