CN115226928B

CN115226928B - Slice material splicing mechanism

Info

Publication number: CN115226928B
Application number: CN202210493772.8A
Authority: CN
Inventors: 刘坤; 高空; 邢俊美; 李明辉
Original assignee: Kunming Sanxing Zhizao Technology Co ltd
Current assignee: Kunming Sanxing Zhizao Technology Co ltd
Priority date: 2022-05-08
Filing date: 2022-05-08
Publication date: 2023-09-05
Anticipated expiration: 2042-05-08
Also published as: CN115226928A

Abstract

The invention provides a sheet material splicing mechanism, which comprises two rollers which are mutually butt-jointed and extruded, and is characterized in that the roller surfaces of the two rollers are respectively provided with a high roller surface and a low roller surface, the high roller surface on one roller is meshed with the low roller surface on the other roller, at least one raised belt and one recessed belt are arranged on the edge of the high roller surface intersected with the low roller surface from outside to inside, the positions of the raised belt of one roller and the raised belt of the other roller when the two rollers are meshed are completely staggered, the positions of the recessed belt of one roller and the recessed belt of the other roller when the two rollers are meshed are incompletely staggered, so that the head and the tail of new and old sheet materials entering the two rollers are extruded to splice at least two staggered meshing belts, one or all of the at least two meshing belts is ensured to have enough tensile strength, and the problems of serious splicing pressure loss and the like are thoroughly solved.

Description

Slice material splicing mechanism

Technical Field

The invention relates to a splicing mechanism, in particular to a splicing mechanism for heating non-combustible tobacco sheets, and belongs to the technical field of extrusion splicing device design and manufacture.

Background

In the heating non-burning tobacco processing production process, the raw materials which are automatically supplied are all rolled tobacco sheet strips, the rolled tobacco sheet strips are processed into cigarette rods through pretreatment equipment, and then the cigarette rods are wrapped by cigarette paper, and the cigarette rods are cut and rolled to form the heating non-burning cigarettes. In the processing of rolled tobacco sheets into tobacco-based rods, tobacco sheets need to be subjected to various degrees of pretreatment, namely: the tobacco sheets are processed into continuous tows with a certain width along the feeding direction so as to facilitate the convergence of tobacco shreds into rods. The pretreatment modes commonly used at present include embossing, shredding and the like. In practical production, the tobacco sheets are required to be continuously and sufficiently supplied, so that the tail of the old tobacco sheet to be used up and the head of the new tobacco sheet need to be spliced, and the spliced section still has a certain tensile strength after pretreatment, thereby controlling the breakage rate at the position to be low.

The prior art has the following defects in the tobacco sheet splicing process: because the tobacco sheet processing technology is special, pretreatment is needed before tobacco shreds are gathered into rods, and the existing splicing mode without auxiliary materials or with auxiliary materials mostly adopts a convex roller with crimping teeth on the roller surface and a smooth roller with a smooth roller surface for extrusion, so that new and old tobacco sheets entering between the two rollers are extruded from the head and the tail to be spliced into a whole. In order to ensure that two layers of materials overlapped at the head and tail of the new and old tobacco sheets still have enough strength after being spliced, the convex roller and the smooth roller need enough interference, and the excessive interference inevitably leads to serious crushing of the splicing section, so that when excessive sheet materials at the front and rear ends need to be removed in the splicing process, one of the splicing sections is inevitably damaged seriously, the tobacco sheets are inevitably broken in the subsequent pretreatment process, and finally the tobacco sheets cannot be supplied in a sufficient quantity and normally. The tobacco sheets on the convex roller side are extruded to the tobacco sheets on the smooth roller side when the head and the tail of the new and the old tobacco sheets are extruded to form two layers of materials which are overlapped at the head and the tail in the splicing process, so that the tobacco sheets on the smooth roller side are seriously crushed, the tobacco sheets on the smooth roller side are slightly crushed, and further in the splicing process, if the severely crushed tobacco sheets are removed, the splicing section is supported by the tobacco sheets with the slightly crushed side, and the tensile strength of the splicing section is stronger; however, if the tobacco sheet on the side with the lighter crushing is removed, the tensile strength of the splicing section is greatly weakened, and the tobacco sheet is broken to different degrees when entering the subsequent treatment, so that the tobacco sheet cannot be sufficiently and normally supplied. There is therefore a need for improvements in the art.

Disclosure of Invention

The invention aims to provide a sheet material splicing mechanism which can splice new and old tobacco sheets once to form at least two splicing sections, and further, one or all of the at least two splicing sections still has stronger tensile strength in the subsequent processing process, so that the yarn breakage rate at the splicing sections is always at a lower level.

The invention is completed by the following technical scheme: a slice material splicing mechanism comprises two rollers which are mutually butt-jointed and extruded, and is characterized in that the roller surfaces of the two rollers are respectively provided with a high roller surface and a low roller surface, the high roller surface on one roller is meshed with the low roller surface on the other roller, at least one raised belt and one recessed belt are arranged on the edge of the high roller surface which is intersected with the low roller surface from outside to inside, the position of the raised belt of one roller and the raised belt of the other roller when the two rollers are meshed is completely staggered, the position of the recessed belt of one roller and the recessed belt of the other roller when the two rollers are meshed is incompletely staggered, so that the head and the tail of a new slice material and an old slice material which enter between the two rollers are extruded and spliced into at least two staggered meshed belts, the raised belts of each roller can be ensured to be crimped onto the slice material, the problem of weakening of crimping strength caused by superposition of crimping areas is avoided, one or all of the at least two meshed belts is ensured to have enough tensile strength, and the wire breakage rate of the splicing position is always at a lower level.

At least one protruding belt and one groove belt at the edge of the high roll surface where the two rolls and the low roll surface are intersected are arranged to be an arc belt section and a straight belt section which extend from one end of the rolls to the other end of the rolls or an arc belt which extends from one end of the rolls to the other end of the rolls, so that the situation that the sectional area of a splicing section is overlarge is avoided, and favorable mechanical conditions are provided for front end and rear end waste removal in the splicing process.

The effective compression joint length L formed by the linear belt section and the sheet material in the splicing process is 0-0.5 times of the width E of the sheet material, and the linear belt section and the sheet material are used for providing enough compression length, so that the tension partition effect is ensured to be stable.

The arc-shaped belt sections in the convex belt and the concave belt or the convex belt and the concave belt are spiral or wavy or continuously and smoothly transited in a curve shape so as to avoid overlarge sectional area of the splicing section.

The protruding strip is provided with a plurality of polygonal protruding teeth at intervals, which are used for reinforcing extrusion marks and improving splicing reliability.

The space between the high roll surface and the low roll surface which are meshed on the two rolls is at least 2 times of the thickness of the sheet material in the meshing process, so that the sheet material has enough abdication space in the splicing process.

The depth of the groove belt on the roller surface is smaller than or equal to 2 times of the thickness of the sheet material, and the groove belt is used for ensuring that the groove belt has a yielding space required during splicing in the splicing process, so that the aims of uniform crimping and reasonable crimping strength are fulfilled.

The invention has the following advantages and effects: by adopting the technical scheme, the head and tail parts of new and old sheet materials entering between the two rollers can be conveniently extruded to be spliced into at least two staggered meshing belts, the raised belts of each roller can be ensured to be crimped onto the sheet materials, the problem of weakening of crimping strength caused by superposition of crimping areas is avoided, one or all of the at least two meshing belts is ensured to have enough tensile strength, the wire breakage rate of the spliced part is always at a lower level, and the problems that the splicing loss of the existing auxiliary material-free splicing splice or the auxiliary material-free splicing splice is serious, the front and rear end material removing parts are unreasonable, the tensile strength of the spliced section is poor, the subsequent sheet materials cannot be fully and normally supplied are solved.

Obviously, the splicing mechanism provided by the invention is also applied to splicing other sheet materials.

Drawings

FIG. 1 is a schematic view of the structure of two rolls of the present invention;

FIG. 2 is a cross-sectional view of the two roll surfaces in the splicing process of the present invention; FIG. 3 is a schematic view of another roll surface structure according to the present invention;

FIG. 4 is a schematic diagram of an application of the present invention;

FIG. 5 is a schematic illustration of two meshing bands formed by splicing the beginning and end of new and old sheet materials;

FIG. 6 is a schematic illustration of two additional strips of engagement between the beginning and end of the new and old sheet materials.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

The invention provides a sheet material splicing mechanism, which comprises two rollers 1 and 2 mutually butted and extruded, wherein: the high roll surface 11 of the roll 1, the low roll surface 12, the high roll surface 21 of the roll 2 and the low roll surface 22, the high roll surface 11 of the roll 1 is meshed with the low roll surface 22 of the roll 2, the high roll surface 21 of the roll 2 is meshed with the low roll surface 12 of the roll 1, one raised strip 13, 23 and one grooved strip 14, 24 are arranged on the edges of the high roll surfaces 11, 21 intersected by the roll 1, the roll 2 and the low roll surfaces 12, 22 from outside to inside, and the positions of the raised strip 13 of one roll 1 and the raised strip 23 of the other roll 2 when the two rolls 1, 2 are meshed are completely staggered, and the positions of the grooved strip 14 of one roll 1 and the grooved strip 24 of the other roll 2 when the two rolls 1, 2 are meshed are not completely staggered, as shown in fig. 2.

The raised strips 13, 23 and the recessed strips 14, 24 at the edges of the high roll surfaces 11, 21 of the two rolls 1, 2 are respectively provided as arc-shaped strip sections 16, 26+ straight strip sections 15, 25 extending from one end of the rolls to the other end, as shown in fig. 1, or arc-shaped strips 28 extending from one end of the rolls to the other end, as shown in fig. 3, so as to avoid overlarge sectional areas of splicing sections and provide favorable mechanical conditions for front and rear end waste removal in the splicing process.

The effective crimp length L of the linear belt segments 15, 25 and the sheet material formed in the splicing process is 0-0.5 times the width E of the sheet material, so as to provide enough compression length, thereby ensuring stable tension isolating effect.

The arcuate band segments 16, 26 in the raised and grooved bands, or the raised and grooved bands, are helically shaped, or obviously wavy, or continuously smoothly transitioned in a curved fashion to avoid excessive cross-sectional area of the splice.

A plurality of polygonal convex teeth are arranged on the convex belts 13 and 23 at intervals and used for reinforcing extrusion marks and improving splicing reliability.

The space between the high roller surfaces 11, 21 and the low roller surfaces 22, 12 which are meshed on the two rollers 1, 2 is at least 2 times of the thickness of the sheet material in the meshing process, so as to ensure that the sheet material has enough space for yielding in the splicing process.

The depth of the groove belts 14, 24 on the roll surfaces 11, 21 is less than or equal to 2 times of the thickness of the sheet material, so that the groove belts are used for ensuring that the groove belts have the abdication space required in the splicing process, and the purposes of uniform crimping and reasonable crimping strength are achieved.

The roll shafts 17, 27 of the two rolls 1, 2 are respectively connected with corresponding power machines so as to be driven by the corresponding power machines to rotate, thereby rolling the new and old sheet materials B, C entering between the two rolls 1, 2, and forming a splice of two meshing belts D1, D2 at a time in the width direction.

The roll shafts 17 and 27 of the two rolls 1 and 2 are connected with a transmission mechanism, and the transmission mechanism is connected with a power machine so as to drive the two roll shafts 17 and 27 and the rolls 1 and 2 to synchronously rotate through the transmission mechanism under the drive of the power machine, thereby rolling the new and old sheet materials B, C entering between the two rolls 1 and 2, and forming a splice of two meshing belts D1 and D2 at one time in the width direction.

When the novel and old sheet material B, C entering between the two rollers 1 and 2 is extruded and spliced into at least two staggered meshing belts D1 and D2, the convex belts 13 and 23 of each roller 1 and 2 can be ensured to be crimped onto the sheet material B, C, the problem of reduced crimping strength caused by overlapping crimping areas is avoided, one or all of the at least two meshing belts D1 and D2 is ensured to have enough tensile strength, and the yarn breakage rate at the splicing position is always at a lower level.

Claims

1. A slice material splicing mechanism comprises two rollers which are mutually butt-jointed and extruded, wherein the roller surfaces of the two rollers are respectively provided with a high roller surface and a low roller surface, and the high roller surface on one roller is meshed with the low roller surface on the other roller;

the space between the high roll surface and the low roll surface which are meshed on the two rolls in the meshing process is at least 2 times of the thickness of the sheet material;

the groove zones have a depth on the roll surface of less than or equal to 2 times the thickness of the sheet material.

2. The sheet material splicing mechanism of claim 1, wherein at least one of the raised strips and one of the recessed strips at the edges of the high roll surfaces of the two rolls are provided as arcuate strips extending from one end of the rolls to the other end + linear strips, or as arcuate strips extending from one end of the rolls to the other end.

3. The sheet material splicing mechanism of claim 2, wherein the linear band segment has an effective crimp length with the sheet material during splicing that is 0-0.5 times the width of the sheet material.

4. The sheet material splicing mechanism of claim 1, wherein the raised strips and recessed strips are arcuate or spiral or wavy.

5. The sheet material splicing mechanism of claim 1, wherein the raised strips are provided with a plurality of polygonal teeth at intervals.