CN107020581B

CN107020581B - Sponge sand compounding system

Info

Publication number: CN107020581B
Application number: CN201710424891.7A
Authority: CN
Inventors: 李熙瑞
Original assignee: Anhui Jincen Composites Co ltd
Current assignee: Anhui Jincen Composites Co ltd
Priority date: 2017-05-31
Filing date: 2017-06-06
Publication date: 2023-08-25
Anticipated expiration: 2037-06-06
Also published as: CN107020581A; CN206925745U

Abstract

The invention relates to production of grinding consumable materials, in particular to a sponge sand composite system which comprises a discharging unit, a gluing unit, a pressing unit and a rolling unit which are sequentially arranged, wherein the discharging unit comprises a sponge discharging roll and a film sand discharging roll, the gluing unit is positioned below a sponge travel path and is used for gluing film sand, a pre-pressing unit is arranged between the gluing unit and the pressing unit, the sponge sand and the film sand are pre-pressed at the pre-pressing unit and then enter the pressing unit for hot pressing.

Description

Sponge sand compounding system

Technical Field

The invention relates to the production of grinding consumables, in particular to a sponge sand composite system.

Background

In the prior art, in order to facilitate grinding processing of products, polishing consumables using sponge as a base material, commonly called sponge sand, are gradually derived, and a layer of grinding material with good elasticity is coated on a layer of grinding material, wherein the sponge elastomer is used as the base material. However, the foaming pores on the surface of the sponge base material can enable the liquid glue and the abrasive with the particle size smaller than the pore size of the foaming pores of the sponge to penetrate, so that the waste of the glue and the abrasive is caused. The particle size of the abrasive is only about 240 meshes due to the pore size of sponge foaming pores, so that the prior art also has the steps of coating the abrasive on carriers such as a film and the like, and then carrying out compound bonding on the film and a sponge elastomer to obtain the sponge sand paper convenient to use. However, under the action of the traction roller and the reversing roller, the extension degree difference between the sponge elastomer and the film is large, if the sponge elastomer and the film are directly laminated by glue, the extension length difference between two sides of the finished product is large, that is, after the sponge elastomer with different extension lengths is directly bonded with the film, the finished product is greatly warped due to the difference of restoring force, and the phenomenon that the two ends of the finished product are warped or the middle of the finished product is arched after being placed on a plane is particularly shown. Such finished products are inconvenient for later use, and therefore, there is a need for developing a composite system that reduces warping of the sponge sand finished product by those skilled in the art.

Disclosure of Invention

The invention aims to provide a compound system for reducing the warping degree of a sponge sand finished product.

In order to achieve the above purpose, the technical scheme of the invention is as follows: the utility model provides a compound system of sponge sand, includes blowing unit, rubber coating unit, pressfitting unit and the rolling unit that arranges in proper order, and the blowing unit includes sponge blowing volume, film sand blowing volume, and the rubber coating unit is located the below position department of sponge travel path and carries out the rubber coating operation to film sand, be equipped with pre-compression unit between rubber coating unit and the pressfitting unit, sponge, film sand carry out the pre-compression in pre-compression unit department, later get into the pressfitting unit and carry out the hot press.

Compared with the prior art, the sponge sand compounding system provided by the invention has the advantages that the pre-compression of the sponge and the film sand is carried out between the gluing unit and the compression unit, the overlarge gap between the sponge and the film sand caused in the subsequent compression process and the conveying process is reduced, the warping phenomenon of a finished product is avoided, and the flatness of the sponge sand is ensured.

Drawings

FIG. 1 is a schematic diagram of a composite system of sponge sand provided by the invention;

fig. 2 is a schematic view of a pre-compression unit according to the present invention.

Detailed Description

As shown in fig. 1 and 2, the invention provides a sponge sand compounding system, which comprises a discharging unit 10, a gluing unit 20, a laminating unit 30 and a rolling unit 40 which are sequentially arranged, wherein the discharging unit 10 comprises a sponge discharging roll 11 and a film sand discharging roll 12, the gluing unit 20 is positioned below a travel path of a sponge 1 and is used for gluing film sand 2, a pre-laminating unit 50 is arranged between the gluing unit 20 and the laminating unit 30, the sponge 1 and the film sand 2 are pre-laminated at the pre-laminating unit 50, and then the sponge 1 and the film sand 2 enter the laminating unit 30 to be thermally laminated.

Further, the diameter of the roll surface of the roll 41 of the roll unit 40 has a larger influence on the curling of the finished product 3, if the diameter of the roll surface of the roll 41 is smaller, the curling of the finished product 3 tends to be severe, the finished product 3 is caused to be warped seriously, and if the diameter of the roll surface of the roll 41 is too large, the excessive space is occupied. In the invention, the ratio of the diameter of the roller surface of the wind-up roller 41 of the wind-up unit 40 to the thickness of the finished product 3 is 50-55: 1, through the arrangement of the roller diameter, the phenomenon that the film sand with good flatness obtained in the previous procedure causes new warpage due to large difference of deformation of the inner side and the outer side during rolling is avoided.

Further, the pre-press unit 50 includes two parallel upper and lower press rolls 51, 52 arranged horizontally. In the invention, the glue coating amount of the film sand 2 is small, and is negligible compared with the total thickness of the sponge 1 and the film sand 2, in order to ensure better pre-pressing effect, the distance between the roll surfaces of the upper pressing roll 51 and the lower pressing roll 52 is 90-95% of the total thickness of the sponge 1 and the film sand 2, so that the sponge 1 and the film sand 2 coated with glue are attached through the pre-pressing unit 50, and the warping problem caused by the overlarge gap between the sponge 1 and the film sand 2 in the follow-up pressing and conveying processes is effectively avoided.

Further, the film sand 2 advances in a horizontal direction between the glue spreading unit 20 and the pre-pressing unit 50, so that uneven distribution of glue coated on the film sand 2 under the action of gravity is avoided, and the pre-pressing reliability of the film sand 2 and the sponge 1 is ensured.

Further, when the winding speed of the winding unit 40 on the finished product 3 is too high, the traction roller or the reversing roller in the composite system tends to increase to cause the sponge 1 to be excessively extended, which is extremely unfavorable for controlling the warping of the finished product 3, and in the invention, the winding speed of the winding unit 40 is 4-6m/min.

Further, in the present invention, in order to prevent heat at the pressing unit 30 from being carried into the winding unit 40 and into the coil stock of the finished product 3, a cooling unit 60 is disposed between the pressing unit 30 and the winding unit 40 to cool the finished product 3, and in addition, a printing operation can be performed on the finished product 3 as required, and an ink printing device 70 and an air drying unit 80 are disposed between the pressing unit 30 and the winding unit 40.

According to the sponge sand compounding system provided by the invention, the pre-lamination of the sponge 1 and the film sand 2 is realized before the sponge sand is subjected to the lamination process, the overlarge expansion deformation of the gap between the sponge 1 and the film sand 2 caused in the follow-up lamination process and the conveying process is effectively reduced, and meanwhile, when the laminated and treated sponge sand is rolled, the roller diameter can ensure that the rolling process can not cause new warping problem, namely, the excellent flatness of the finished sponge sand is ensured.

Claims

1. The utility model provides a compound system of sponge sand, includes blowing unit (10), rubber coating unit (20), pressfitting unit (30) and rolling unit (40) that arrange in proper order, blowing unit (10) are including sponge blowing book (11), film sand blowing book (12), and rubber coating unit (20) are located the below position department of sponge (1) stroke route and carry out rubber coating operation to film sand (2), its characterized in that: a pre-pressing unit (50) is arranged between the gluing unit (20) and the pressing unit (30), the sponge (1) and the film sand (2) are pre-pressed at the pre-pressing unit (50), and then enter the pressing unit (30) to be thermally pressed;

the glue coating thickness of the film sand (2) is smaller than the total thickness of the sponge (1) and the film sand (2), the pre-compression unit (50) comprises two parallel upper and lower compression rollers (51, 52) which are horizontally arranged, and the distance between the roller surfaces of the upper and lower compression rollers (51, 52) is 90-95% of the total thickness of the sponge (1) and the film sand (2).

2. The sponge sand compounding system as in claim 1 wherein: the ratio of the diameter of the roller surface of the wind-up roller (41) of the wind-up unit (40) to the thickness of the finished product (3) is 50-55: 1.

3. the sponge sand compounding system as in claim 1 wherein: the film sand (2) moves between the gluing unit (20) and the pre-pressing unit (50) in a horizontal direction.

4. The sponge sand compounding system as claimed in claim 1 or 2 wherein: the winding speed of the winding unit (40) is 4-6m/min.

5. The sponge sand compounding system as in claim 1 wherein: and a cooling unit (60), an ink printing device (70) and an air drying unit (80) are sequentially arranged between the pressing unit (30) and the winding unit (40).