CN213439986U

CN213439986U - Spreading and conveying device

Info

Publication number: CN213439986U
Application number: CN202022124967.4U
Authority: CN
Inventors: 徐毅
Original assignee: Zuiko (shanghai) Corp
Current assignee: Zuiko (shanghai) Corp
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-06-15
Anticipated expiration: 2030-09-24

Abstract

The utility model provides an expanding conveyer, including first expanding portion and the second expanding portion that has adsorption structure simultaneously, from the side of the up flow of flow direction down side see, will first expanding portion with second expanding portion is "eight" font setting, and the entrance opening that first expanding portion and second expanding portion formed is little promptly, the exit opening is big to guarantee that the arc cutter cuts the preceding absorption health supplies semi-manufactured goods at width direction's expanding function, and possess the function of adsorbing the conveying in the expanding to solve absorption health supplies semi-manufactured goods because shank elastomeric element is asymmetric, the phenomenon of fold appears in width direction, both combine together and guarantee accuracy, the cutting effect of arc cutter cutting, promote product aesthetic measure and quality.

Description

Spreading and conveying device

Technical Field

The utility model belongs to the technical field of disposable hygienic articles manufacture equipment, especially, relate to fields such as baby/adult's pull-up diaper, baby/adult panty-shape diapers, women sanitary trousers, specifically are an expanding conveyer.

Background

In the manufacturing and producing equipment of the disposable sanitary products, the arc-shaped cutter cuts the leg circumference arc-shaped opening of the product by arranging the arc-shaped cutting edge corresponding to the corresponding size, so the arc-shaped cutter is an important constituent unit of the manufacturing and producing equipment of the disposable sanitary products.

Specifically, such as disposable diapers, for example, composed of an outer cover and an inner sheet, wherein the inner sheet is fixed to the inside of the outer cover, and the inner sheet is a core structure for absorbing excreta, so that the inner sheet has a certain thickness; the outer coating layer is only formed by compounding two layers of non-woven fabric materials and an elastic component, and the thickness of the outer coating layer is relatively thin. The disposable sanitary products are also called absorbent sanitary products because they have the function of absorbing excreta. In the practical production process of the disposable diaper, at an arc-shaped cutter station, the outer cladding layer and the inner sheet of the disposable diaper are compounded, the inner sheet is compounded on the continuous outer cladding layer in a discontinuous mode, and the semi-finished product of the disposable diaper is completely in a state of uneven thickness and large tension change. According to the prior process, the disposable diaper semi-finished product shown in figure 1 enters an arc-shaped cutter mode: the arc-shaped cutter flow path is convenient for cutting under the condition of special size (namely, one size of disposable diaper corresponds to one arc-shaped cutter) when the inlet and the outlet of the semi-finished product of the disposable diaper usually form an angle a. In order to save the manufacturing cost of the arc-shaped cutter, the arc-shaped cutter can be used for multiple purposes, and leg-surrounding arc-shaped openings of different products are cut out through speed change. Because the difference of different size speed, do not have the device again to press disposable urine trousers semi-manufactured goods, consequently still adopt the case of the flow of fig. 1, can not guarantee that disposable urine trousers semi-manufactured goods are in a stable tension level around the arc cutter, restricted the precision at the cutting of arc cutter from this for the product size is inaccurate after the cutting of arc cutter, cutting effect is influenced greatly, causes the production of defective products.

The disposable diaper semi-finished product has the problem that the tension change is large before and after the arc-shaped cutter, the outer covering layer of the disposable diaper semi-finished product is formed by compounding a non-woven fabric material and an elastic part, particularly leg elastic parts are usually compounded at the crotch part, and the leg elastic parts are arranged at the positions of the abdomen and the hip part and are not symmetrical, so that the phenomenon of wrinkles is easy to appear in the width direction after being compounded with an inner piece, and the problem also restricts the cutting precision of the arc-shaped cutter and influences the quality of the whole product.

Therefore, it is urgently needed to provide a new arc-shaped cutting system for absorbent sanitary products, which is used for solving the problems of uneven tension and wrinkles in the width direction of semi-finished products of the absorbent sanitary products before and after cutting.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems: the invention provides a spreading conveyor for spreading a semi-finished product of an absorbent sanitary article in a width direction and adsorbing and conveying the semi-finished product to an arc-shaped cutter on a downstream side, wherein the semi-finished product of the absorbent sanitary article comprises a front end part and a rear end part in the width direction, the spreading conveyor is characterized by comprising: a frame provided with a front part and a rear part extending in a width direction; the first expanding part is arranged along the length direction and is arranged at the front part of the rack, and the second expanding part is arranged along the length direction and is arranged at the rear part of the rack and is arranged corresponding to the first expanding part; a first spreading part and a second spreading part which are correspondingly arranged in the width direction and respectively provided with an adsorption structure; wherein the first widening corresponds to a front end portion of the absorbent sanitary article blank, and the second widening corresponds to a rear end portion of the absorbent sanitary article blank; the first spreading part and the second spreading part are arranged in a splayed shape or in parallel when viewed from an upstream side to a downstream side in the flow direction;

further, the spreading transmission device further comprises: the driving part is connected with a motor; a conveyor belt group surrounding the driving part; the supporting plate is arranged between the first expanding part and the second expanding part and fixed on the rack, and the supporting plate is used for supporting the middle part of the semi-finished product of the absorbent sanitary product.

Furthermore, the adsorption structure of the first spreading part is provided with a first vacuum box which is internally of a hollow structure and is connected with an air suction device, and the first vacuum box adsorbs the front end part of the semi-finished product of the absorbent sanitary product; a first hole with a first origin is formed in the bottom of the first vacuum box; the adsorption structure of the second spreading part is provided with a second vacuum box which is internally of a hollow structure and is connected with the air suction device, and the second vacuum box adsorbs the rear end part of the semi-finished product of the absorbent sanitary product; and a second hole with a second origin is formed in the bottom of the second vacuum box.

Further, the first spreading part further includes: the first flange is fixedly connected with the rack and movably embedded into a first hole of the first vacuum box; the first conveying roller is arranged at the upstream position of the first vacuum box; the second conveying roller is arranged at the downstream position of the first vacuum box and is parallel to the first conveying roller; the first plate is of a uniformly distributed long waist hole structure and is detachably arranged on the surface of the first vacuum box.

Further, the second spreading part further includes: the second flange is fixedly connected with the rack and movably embedded into a second hole of the second vacuum box; the third conveying roller is arranged at the upstream position of the second vacuum box; the fourth conveying roller is arranged at the downstream position of the second vacuum box and is arranged in parallel with the third conveying roller; the second plate is of a uniformly distributed long waist hole structure and is detachably arranged on the surface of the second vacuum box.

Further, the spread width conveying device further includes: the first connecting assembly is arranged inside the rack, one end of the first connecting assembly is provided with a first mounting position, the first mounting position is connected with the bottom of the first vacuum box, and a first threaded hole is formed in the other end of the first connecting assembly; one end of the first adjusting rod is provided with a threaded part, the threaded part extends into the rack and penetrates through a first threaded hole of the first connecting assembly, and the threaded part of the first adjusting rod corresponds to the first threaded hole and is matched with the first threaded hole; the first handle is arranged at the other end, positioned outside the rack, of the first adjusting rod, and the first expanding part rotates around the first origin point by rotating the first handle; the second connecting assembly is arranged inside the rack, one end of the second connecting assembly is provided with a second mounting position, the second mounting position is connected with the bottom of the second vacuum box, and a second threaded hole is formed in the other end of the second connecting assembly; one end of the second adjusting rod is provided with a threaded part, the threaded part extends into the rack and penetrates through a second threaded hole of the second connecting assembly, and the threaded part of the second adjusting rod corresponds to and is matched with the second threaded hole; the second handle is arranged at the other end, positioned outside the rack, of the second adjusting rod, and the second expanding part rotates around the second origin point by rotating the second handle; and the limiting plate is respectively arranged at the two ends of the first vacuum box and the second vacuum box in the width direction and used for fixing, the limiting plate is provided with an arc waist hole which is arranged by taking the first original point/the second original point as the center, and the limiting plate is fixed on the rack through the arc waist hole.

Further, the driving part includes: a third driving roller corresponding to the first width expanding portion; and a fourth driving roller corresponding to the second widening portion, the third driving roller and the fourth driving roller being connected to the motor.

Further, the conveyor belt group includes: the third conveying belt is at least annularly arranged on the peripheries of the first conveying roller, the second conveying roller and the third driving roller, through holes are uniformly formed in the third conveying belt, and the through holes correspond to the long waist holes of the first plate of the first vacuum box in arrangement; and the fourth conveyor belt is at least annularly arranged on the periphery of the third conveying roller, the fourth conveying roller and the fourth driving roller, through holes are uniformly formed in the fourth conveyor belt, and the through holes correspond to the long waist holes of the second plate of the second vacuum box in arrangement.

Furthermore, a first mounting position of the first connecting assembly is provided with a long hole structure, the bottom of the first vacuum box is provided with a first threaded hole corresponding to the long hole position of the first mounting position, the size of the first threaded hole is smaller than the size of the long hole in the width direction, and a screw is screwed into the first threaded hole; and a second mounting position of the second connecting assembly is provided with a long hole structure, the bottom of the second vacuum box is provided with a second threaded hole corresponding to the long hole position of the second mounting position, the size of the second threaded hole is smaller than that of the long hole in the width direction, and the other screw is screwed into the second threaded hole.

Further, the spreading transmission device further comprises a tensioning wheel, the tensioning wheel is provided with two roller structures corresponding to the peripheries of the third transmission belt and the fourth transmission belt in the width direction, and the tensioning wheel respectively tensions the third transmission belt and the fourth transmission belt.

The utility model has the advantages that: the utility model provides an expanding conveyer, including the expanding conveyer that has adsorption structure's first expanding portion and second expanding portion simultaneously and form, from the side of the up flow of flow direction down side see, will first expanding portion with second expanding portion is "eight" font setting, and the entrance opening that first expanding portion and second expanding portion formed is little promptly, the exit opening is big to guarantee that absorptive hygienic articles semi-manufactured goods are at width direction's expanding function before the cutting of arc cutter, and possess the function of adsorbing the conveying in the expanding, thereby solved absorptive hygienic articles semi-manufactured goods because shank elastomeric element is asymmetric, the phenomenon of fold appears in width direction, both combine together and guarantee accuracy, the cutting effect of arc cutter cutting, promote product aesthetic measure and quality.

Drawings

The invention is further explained below with reference to the figures and examples.

FIG. 1 is a schematic view of a conventional flow path of a prior art curved cutter;

FIG. 2 is a disposable diaper of the arcuate cutting system of the absorbent sanitary article of the present invention;

FIG. 3 is a schematic view of the arcuate cutting system of the absorbent hygiene article of the present invention;

fig. 4 is a schematic view of an absorbent sanitary article semi-finished product corresponding to the arc cutting system of the absorbent sanitary article of the present invention;

fig. 5 is a top view of the clamping device of the present invention;

fig. 6 is a top view of the spreading conveyor of the present invention;

fig. 7 is a schematic view of a driving part of the spread-out conveyor of the present invention;

FIG. 8 is a schematic diagram of S-S structure in FIG. 6.

Reference numerals:

a semi-finished product S' of an absorbent sanitary article; disposable diaper S; an outer cladding S1;

an inner chip S2; a waist opening S3; leg openings S4; the leg surrounds an arc-shaped opening T;

a front end portion S1'; a rear end portion S2'; leg elastic members S3'; a crimping device 1;

a spread-out conveyor 2; a press roll device 3; a first spread deviation correcting device 4;

an arc-shaped cutter 5; a second spread deviation correcting device 6;

a knife roll 51; a bottom roller 52; a frame 53;

an upper nip portion 11; a lower nip portion 12; a first driving roller 111;

a first roller 112; a first conveyor belt 113; a second driving roller 121;

a second roller 122; a second conveyor belt 123; a frame 28;

the first expanding portion K1; the second spreading part K2;

a first vacuum box 20; a second vacuum box 21; a pallet 22;

a stopper plate 23; a first origin A; a second origin B; a first conveyance roller 201;

a second transfer roller 202; a first plate 203; a first aperture 204; a first rim plate 205;

a first connection assembly 24; a first adjustment lever 26; a first handle 261;

a first mounting location 241; a first threaded hole 242; a third conveyance roller 211;

a fourth transfer roller 212; a second plate 213; a second aperture 214; a second rim plate 215;

a second connecting assembly 25; a second adjusting lever 27; a second handle 271; a second mounting location 251;

a second threaded hole 252; a third driving roller 291; a fourth driving roller 292;

the third conveyor belt D1; a fourth conveyor belt D2; a first press roller 31;

a second press roll 32; the first spreader roll 41; a second spreader roll 61; a flow path L.

Detailed Description

The following description of the embodiments refers to the accompanying drawings for illustrating the specific embodiments in which the invention may be practiced. In the present invention, directional terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc. refer to directions of the attached drawings only. Accordingly, the directional terms used are used for describing and understanding the present invention, and are not used for limiting the present invention.

The utility model provides a be applied to absorbent sanitary articles ' S arc cutting system ' S expander conveyer, absorbent sanitary articles ' S arc cutting system is used for carrying out the cutting of arc shape in the appointed area to absorbent sanitary articles semi-manufactured goods S ' that upstream side combined machining accomplished, is worth explaining, because this system is the intermediate link of disposable sanitary articles manufacture equipment, when consequently stating absorbent sanitary articles (also called disposable sanitary articles) below, shows with absorbent sanitary articles semi-manufactured goods S '.

In the present embodiment, a disposable diaper S is exemplified, and as shown in fig. 2, the disposable diaper S includes an outer cover S1 and an inner panel S2.

The outer cover S1 is formed by compounding two layers of non-woven fabric material and elastic components, the inner sheet S2 is a core structure for absorbing excrement, and the inner sheet S2 is fixed inside the outer cover S1. After the disposable diaper S is folded in half, both side edges of the outer cover S1 are sealed, thereby forming a waist opening S3 and two leg openings S4. The leg openings S4 are formed by cutting the semi-finished product S' of the absorbent sanitary article that is not formed into a molded product, that is, by the arc cutting system of the absorbent sanitary article of the present invention cutting out the arc of the leg openings S4.

As shown in fig. 3, the arc cutting system for absorbent sanitary products is also defined as MD direction when viewed from the flow direction, and specifically, the arc cutting system for absorbent sanitary products comprises two clamping and pressing devices 1, a width expanding transmission device 2, a pressing roller device 3, a first width expanding deviation rectifying device 4, an arc cutting knife 5 and a second width expanding deviation rectifying device 6 which sequentially process the semi-finished products S' of the absorbent sanitary products.

The arc-shaped cutter 5 is used for cutting an arc-shaped opening T of the leg periphery of the semi-finished product S' of the absorbent sanitary product which is compositely processed on the upstream side.

The arc-shaped cutter 5 includes: knife roller 51, bottom roller 52 and frame 3. The knife roll 51 is provided with an arc-shaped knife edge, the bottom roll 52 is arranged opposite to the knife roll 51, a gap for accommodating the semi-finished product S' of the absorbent sanitary product to pass is arranged between the bottom roll 52 and the knife roll 51, and the knife roll 51 and the bottom roll 52 are arranged in the frame 3.

The arc-shaped cutter 5 is used for cutting the designated area of the semi-finished product S' of the absorbent sanitary product into an arc shape. In this embodiment, the arc-shaped cutter 5 cuts out the leg opening S4 of the absorbent sanitary article blank S' in an arc shape, i.e., cuts out the leg around the arc-shaped opening T, as shown in fig. 4.

As shown in fig. 4, the absorbent sanitary article semi-finished product S' is in a continuous drawing state, and is cut by the arc-shaped cutter 5 to form a leg-surrounding arc-shaped opening T. For convenience of the later-described explanation, the absorbent sanitary article semi-product S ' includes a front end portion S1 ' and a rear end portion S2 ' in the width direction. The front end portion S1 ' and the rear end portion S2 ' of the absorbent sanitary article semi-finished product S ' are demarcated by a center line in this embodiment. The width direction is a direction perpendicular to the MD and is also oriented in the CD direction.

Two clamping devices 1, wherein one clamping device 1 is arranged at the upstream side of the width expanding conveying device 2 and is used for clamping and conveying the composite semi-finished product S'. The other clamping and pressing device 1 is arranged at the downstream side of the arc-shaped cutter 5 and is used for clamping and conveying the semi-finished product S' of the absorbent sanitary article which is cut into the arc-shaped opening T with the leg circumference.

As shown in fig. 3, the crimping apparatus 1 includes an upper crimping portion 11 and a lower crimping portion 12 which are disposed to face each other in the vertical direction. A channel for accommodating the absorbent sanitary article semi-finished product S' is formed between the upper nip portion 11 and the lower nip portion 12.

The semi-finished product S' of the absorbent sanitary product sequentially passes through a channel of the clamping device 1 on the upstream side, a gap of the spreading conveying device 2 and the arc-shaped cutter 5 and a channel of the clamping device 1 on the downstream side to form a flow path L, and the flow path L is horizontally arranged. It is noted that the term horizontal herein also includes a substantially horizontal or substantially horizontal flow path. In this embodiment, the flow path is horizontally arranged, which is also the preferred embodiment, and further ensures the constant tension state of the absorbent sanitary article semi-finished product S'.

In the present embodiment, the upper nip portion 11 includes: a plurality of first rollers, and a first conveyor belt 113.

One of the first rollers is a first driving roller 111, and the other is a first driven roller 112, and the first driving roller 111 is connected to a motor. The first conveyor belt 113 is wound around the outer peripheries of the plurality of first rollers 112 to form at least one horizontally arranged annular path, and the first conveyor belt 113 is driven by the first driving roller 111 to perform annular conveying.

The distance between the two first rollers 112 farthest from each other on the horizontal path of the first conveyor belt 113 is set as a, and in this embodiment, in order to ensure that the tension of the absorbent sanitary article semi-finished product S' is relatively uniform and stable during the cutting process by the arc-shaped cutter 5, the dimension of the nip-pressing device 1 in the MD direction is set as a reference. As shown in fig. 2 and 4, a distance between two first rollers farthest from each other on the horizontally disposed path of the first conveyor belt 113 is set to a. In this embodiment, the two first rollers are both the first driven rollers 112, that is, the distance between the two first driven rollers 112 is a. Setting the length of the disposable sanitary product with the maximum size finally formed by the semi-finished product S' of the absorbent sanitary product as P, A needs to satisfy the following conditions: a is more than or equal to 1.5P and less than 3P. Since the disposable sanitary products manufacturing equipment usually produces products of a plurality of sizes, in order to ensure the cutting effect of each size, the disposable sanitary products of the largest size are designed as the design standard.

The lower compression part 12 and the upper compression part 11 are similar in structure, and the lower compression part 12 includes: a plurality of second rollers, and a second conveyor belt 123.

One of the plurality of second rollers is a second driving roller 121, and the other is a second driven roller 122. The second driving roller 121 is connected to a motor.

The second conveyor belt 123 forms at least one horizontally disposed loop path around the outer periphery of the plurality of second rollers, and the second conveyor belt 123 is driven by the second driving roller 121 to perform loop conveyance. The horizontally disposed path of the first conveyor 113 and the horizontally disposed path of the second conveyor 123 are disposed opposite to each other in the vertical direction to form the passage.

In this embodiment, also, in order to ensure that the semi-finished absorbent sanitary article S' is in a relatively uniform and stable state of tension during the cutting process by the arc-shaped cutter 5, the distance between the two second rollers farthest away in the horizontally arranged path of the second conveyor belt 123 in the lower nip 12 is set as B, and B satisfies: 1.5P ≤ B < 3P, and A ═ B. In this embodiment, one of the two second rollers is the second driving roller 121, and the other is the second driven roller 122, that is, the distance between one of the second driving rollers 121 and one of the second driven rollers 122 is B. Of course, the roller at the position of the second driving roller 121 may be changed to the second driven roller 122, and the structure of the upper nip portion 11 may be the same as that of the lower nip portion 12, and the specific embodiment may be determined according to the actual situation.

The spreading conveyor 2 is disposed upstream of the arc-shaped cutter 5, and the spreading conveyor 2 is configured to spread the front end portion S1 'and the rear end portion S2' of the absorbent sanitary article semi-finished product S 'in the width direction and to suction-convey the absorbent sanitary article semi-finished product S' to the arc-shaped cutter.

The spread conveyor 2 includes a frame 28, a first spread portion K1 having a suction structure, a second spread portion K2 having a suction structure, a driving portion 29, a conveyor belt group, a pallet 22, a first link assembly 24, and a second link assembly 25. The first widened portion K1 and the second widened portion K2 are disposed in correspondence in the width direction, wherein the first widened portion K1 corresponds to a front end portion of the absorbent sanitary article semi-finished product S ', and the second widened portion K2 corresponds to a rear end portion of the absorbent sanitary article semi-finished product S'.

The frame 28 is provided with a front portion 281 and a rear portion 282 extending in the width direction.

The first widening portion K1 is disposed in the longitudinal direction and is provided at the front portion 281 of the frame 28.

The suction structure of the first widening section K1 includes a first vacuum box 20 having a hollow structure inside and connected to a suction device, and the first vacuum box 20 sucks the front end portion S1 'of the absorbent sanitary article semi-finished product S'. The bottom of the first vacuum box 20 is provided with a first hole 204 with a first origin A.

As shown in fig. 6, in the present embodiment, the first expanding portion K1 further includes: a first flange 205, a first transport roller 201, a second transport roller 202, and a first plate 203.

As shown in fig. 6 and 8, the first rim plate 205 is fixedly connected to the frame 28 and movably inserted into the first hole 204 of the first vacuum box 20, and specifically, the flange portion of the first rim plate 205 is merely inserted into the first hole 204 of the first vacuum box 20, but not fixed thereto, so that the first enlarged width portion K1 can be rotated around the first origin a relative to the frame 28 by using the first rim plate 205.

The first transfer roller 201 is disposed at an upstream position of the first vacuum chamber 20, and the second transfer roller 202 is disposed at a downstream position of the first vacuum chamber 20 and is disposed in parallel with the first transfer roller 201.

The first plate 203 is a long waist hole structure distributed uniformly and is detachably mounted on the surface of the first vacuum box 20.

The first connecting assembly 24 is disposed inside the frame 28, one end of the first connecting assembly 24 has a first mounting position 241, the first mounting position 241 is connected to the bottom of the first vacuum box 20, and the other end of the first connecting assembly 24 has a first threaded hole 242 therein.

The first mounting position 241 of the first connecting member 24 is provided with a long hole structure, and in this embodiment, for convenience of detachment, the long hole is provided in a half-open manner. The bottom of the first vacuum box 20 is provided with a first threaded hole 242 corresponding to the long hole of the first mounting position 241, the size of the first threaded hole 242 is smaller than the size in the width direction of the long hole, and a screw is screwed into the first threaded hole 242. The long hole of the first mounting position 241 is larger than the first threaded hole 242 in order to satisfy the requirement of the angle of the first vacuum box 20 rotating around the first origin a, and in general, the angle is not very large, and is generally within 10 °, so the width of the long hole is not very large. When the angle is adjusted, a screw is screwed into the first threaded hole 242 to position the adjusted angle.

The spreading transmission device 2 further includes a first adjusting lever 26, a first handle 261 and a limiting plate 23 which are matched with the first spreading part K1.

The first adjusting rod 26 has a threaded portion at one end, the threaded portion of the first adjusting rod 26 extends into the frame 28 and passes through the first threaded hole 242 of the first connecting assembly 24, and the threaded portion of the first adjusting rod 26 corresponds to and mates with the first threaded hole 242. In this embodiment, the first adjustment rod 26 is fixed inside the frame 28 by a fixing block or the like.

The first handle 261 is disposed at the other end of the first adjusting lever 26 outside the frame 28, and the first flared portion K1 is rotated around the first origin a by rotating the first handle 261. Since the first mounting location 241 is connected to the bottom of the first vacuum box 20, the first flared portion K1 can rotate around the first origin a of the frame 28 by the first flange 205 being provided under the adjustment of the first handle 261.

The limiting plates 23 are disposed at two ends of the first vacuum box 20 in the width direction for fixing, the limiting plates 23 have arc-shaped waist holes 231 disposed with the first origin a as the center, and the limiting plates 23 are fixed on the rack 28 through the arc-shaped waist holes 231.

When the first widening part K1 rotates to a desired angular position around the first origin a, the limiting plate 23 fixes the first vacuum box 20, preventing the first vacuum box 20 from running out of position in the production process.

The second spreading part K2 is disposed in the longitudinal direction and at the rear part 282 of the frame 28, and is provided corresponding to the first spreading part K1.

The suction structure of the second spreading part K2 includes a second vacuum box 21 having a hollow structure inside and connected to the suction device, and the second vacuum box 21 sucks the rear end portion S2 'of the semi-finished absorbent sanitary article S'. The bottom of the second vacuum box 21 is provided with a second hole 214 with a second origin B.

As shown in fig. 6, the second widened portion K2 further includes: a second flange 215, a third transfer roller 211, a fourth transfer roller 212, and a second plate 213.

Similarly, the second flange 215 is fixedly connected to the frame 28 and movably inserted into the second hole 214 of the second vacuum chamber 21, specifically, the flange portion of the second flange 215 is merely inserted into the second hole 214 of the second vacuum chamber 21, and the flange portion and the second vacuum chamber are not fixed, so that the second enlarged width portion K2 can be rotated around the second origin B relative to the frame 28 by using the second flange 215.

The third transfer roller 211 is provided at an upstream position of the second vacuum chamber 21. The fourth transfer roll 212 is provided at a downstream position of the second vacuum chamber 21 and is arranged in parallel with the third transfer roll 211.

The second plate 213 is a long kidney-shaped hole structure distributed uniformly and is detachably mounted on the surface of the second vacuum box 21.

The second connecting assembly 25 is disposed inside the frame 28, one end of the second connecting assembly 25 has a second mounting position 251, the second mounting position 251 is connected to the bottom of the second vacuum box 21, and the other end of the second connecting assembly 25 has a second threaded hole 252 inside.

The second mounting position 251 of the second connecting assembly 25 is provided with a long hole structure, and in this embodiment, for convenience of detachment, the long hole is provided in a half-open manner. The bottom of the second vacuum box 21 is provided with a second threaded hole 252 corresponding to the long hole position of the second mounting position 251, the size of the second threaded hole 252 is smaller than the size in the width direction of the long hole, and another screw is screwed into the second threaded hole 252. The slot of the second mounting position 251 is larger than the second threaded hole 252 to meet the requirement of the angle of rotation of the second vacuum box 21 about the second origin B, which is generally not very large, and is generally within 10 °, so the slot width is not large. When the angle is adjusted, a screw is screwed into the second threaded hole 252 to position the adjusted angle.

The spreading transmission device 2 further includes a second adjusting lever 27, a second handle 271 and the limiting plate 23, which are matched with the second spreading part K2.

The second adjusting rod 27 has a threaded portion at one end, the threaded portion of the second adjusting rod 27 extends into the frame 28 and passes through the second threaded hole 252 of the second connecting assembly 25, and the threaded portion of the second adjusting rod 27 corresponds to and matches the second threaded hole 252. In this embodiment, the second adjusting rod 27 is fixed inside the frame 28 by a fixing block or the like.

The second handle 271 is provided at the other end of the second adjustment lever 27 located outside the frame 28, and the second enlarged width part K2 is rotated around the second origin B by rotating the second handle 271. Since the second mounting position 251 is connected to the bottom of the second vacuum box 21, the second widened portion K2 can rotate around the second origin B of the frame 28 by the second flange 215 provided under the adjustment of the second handle 271.

The limiting plate 23 is disposed at two ends of the second vacuum box 21 in the width direction for fixing, the limiting plate 23 has an arc-shaped waist hole 231 disposed with the second origin B as the center, and the limiting plate 23 is fixed on the rack 28 through the arc-shaped waist hole 231.

When the second spreading portion K2 winds the second origin B to rotate to a desired angular position, the limiting plate 23 fixes the second vacuum box 21, thereby preventing the second vacuum box 21 from running out of position in the production process.

The first spreading section K1 and the second spreading section K2 are arranged in a zigzag shape or in parallel as viewed from the upstream side to the downstream side in the flow direction. The angle of the first widening section K1 and the second widening section K2 is adjusted to be in a splayed arrangement, that is, in the width direction, the opening at the inlet formed by the first widening section K1 and the second widening section K2 is small, and the opening at the outlet is large, so that the front end part S1 'and the rear end part S2' of the absorbent sanitary product semi-finished product S 'respectively realize the widening function while being sucked and conveyed before entering the arc-shaped cutter 5, that is, the front end part S1' and the rear end part S2 'are separated by the suction effect of a vacuum structure, and thus the absorbent sanitary product semi-finished product S' is prevented from being wrinkled in the width direction. Wherein the first spreading section K1 corresponds to the front end section S1 'of the absorbent sanitary article semi-finished product S', and spreading and suction conveyance is performed thereon; the second widening section K2 corresponds to the rear end portion S2 'of the absorbent sanitary article semi-finished product S', and performs widening and suction conveyance thereof. When the first widening section K1 and the second widening section K2 are angularly adjusted to be horizontally disposed, the function of suction transfer, i.e., general vacuum transfer, of the front end portion S1 ' and the rear end portion S2 ' of the absorbent sanitary article semi-finished product S ' is performed, and the widening function is not obvious, and is determined according to actual needs in actual use.

In order to enable the first spreading section K1 and the second spreading section K2 to be adjustable in position in the width direction, an adjusting plate for adjusting the position in the width direction may be provided between the frame 28 and each of the first spreading section K1 and the second spreading section K2, and a corresponding connecting structure may be provided on the adjusting plate.

As shown in fig. 3 and 7, the driving part 29 is connected to a motor; the drive unit 29 includes: a third driving roller 291 and a fourth driving roller 292.

The third driving roller 291 corresponds to the first expanding portion K1.

The fourth driving roller 292 corresponds to the second widening portion K2, and the motor is connected to the third driving roller 291 and the fourth driving roller 292. In this embodiment, the third driving roller 291 and the fourth driving roller 292 are connected by a coupling and the motor is connected.

The conveyor belt group encircles the drive section 29; the conveyor belt group includes: a third conveyor D1 and a fourth conveyor D2.

The third conveyer belt D1 at least sets up in the periphery of first conveyer roller 201, second conveyer roller 202 and third drive roller 291 circularly, evenly set up the through-hole on the third conveyer belt D1, the through-hole with the first vacuum box 20 the long waist hole of first board 203 arranges correspondingly.

The third conveyor D1 makes the front end portion S1 'of the semi-finished absorbent sanitary article S' adsorbed on the surface of the third conveyor D1 by the negative pressure air inside the first vacuum box 20 and conveys the front end portion S1 'of the semi-finished absorbent sanitary article S'.

The fourth conveyer belt D2 at least the annular set up in third conveyer roller 211 fourth conveyer roller 212 and the periphery of fourth drive roller 292, evenly set up the through-hole on the fourth conveyer belt D2, the through-hole with the second vacuum chamber 21 the long waist hole of second plate 213 arranges correspondingly.

The fourth conveyor belt D2 makes the rear end portion S2 'of the semi-finished absorbent sanitary article S' adsorbed on the surface of the fourth conveyor belt D2 by the negative pressure air inside the second vacuum box 21 and conveys the rear end portion S2 'of the semi-finished absorbent sanitary article S'.

The tenter transport apparatus 2 further includes tension rollers having two roller structures provided in the width direction to correspond to the outer peripheries of the third conveyor belt D1 and the fourth conveyor belt D2, respectively, and tensioning the third conveyor belt D1 and the fourth conveyor belt D2, respectively.

The supporting plate 22 is disposed between the first spreading portion K1 and the second spreading portion K2, the supporting plate 22 is fixed to the frame 28, and the supporting plate 22 is used for supporting the middle portion of the semi-finished product S' of the absorbent sanitary product.

The press roller device 3 is installed and fixed on the width expanding transmission device 2, so that the press roller device 3 rotates along with the width expanding transmission device 2 when the width expanding transmission device rotates.

The press roller device 3 includes: a first pressure roller 31 and a second pressure roller 32.

The first pressure roller 31 is positioned above the second transfer roller 202 of the first widening section K1 and is arranged tangentially to the second transfer roller 202, and is used for nipping the front end portion S1 ' of the widened semi-finished absorbent sanitary article S ' during production, so that the front end portion S1 ' is in a stable state at a position before entering the arc-shaped cutting knife 5 for cutting.

The second pressing roller 32 is positioned above the fourth conveying roller 212 of the second widening section K2 and is arranged tangentially to the fourth conveying roller 212, and is used for pressing the rear end portion S2 ' of the widened semi-finished absorbent sanitary product S ' during production, so that the rear end portion S2 ' is in a stable state at a position before entering the arc-shaped cutting knife 5 for cutting.

The first pressing roller 31 and the second pressing roller 32 of the pressing roller device 3 are connected with an air cylinder structure, and in a stop state or a state that the semi-finished product S' of the absorbent sanitary product needs to be adjusted, the first pressing roller 31 and the second pressing roller 32 are respectively far away from the second conveying roller 202 and the fourth conveying roller 212 under the action of the air cylinder.

In order to ensure that the semi-finished product S' of the absorbent sanitary product enters the arc-shaped cutter 5 for cutting under the conditions of flatness in the width direction and relatively accurate position, the first spreading deviation correcting device 4 is also arranged between the arc-shaped cutter 5 and the spreading conveying device 2. The first spread correcting device 4 is used for correcting the front end portion S1 ' and the rear end portion S2 ' in the width direction of the absorbent sanitary article semi-finished product S '.

The first spread deviation correcting device 4 includes: two pairs of vertically adjustable first tenter rollers 41 for respectively edge-correcting and tentering the front end portion S1 ' and the rear end portion S2 ' in the width direction of the absorbent sanitary article semi-finished product S ' before cutting.

The pair of first spreading rollers 41 includes two first spreading rollers 41, the pair of first spreading rollers 41 are horizontally arranged in a front-back manner, and vertically arranged, and the absorbent sanitary article semi-finished product S' is passed between the pair of first spreading rollers 41. This is so arranged that the two pairs of first widening rollers 41 can grip the edge portions of the widthwise front end portion S1 'and the widthwise rear end portion S2' of the absorbent sanitary article semi-finished product S ', respectively, to facilitate widthwise widening of the absorbent sanitary article semi-finished product S'. The first spreading deviation correcting device 4 further includes two adjusting mechanisms respectively connected to the two pairs of first spreading rollers 41, and the two adjusting mechanisms respectively adjust positions of a front end portion S1 'and a rear end portion S2' of the absorbent sanitary article semi-finished product S 'gripped by the two pairs of first spreading rollers 41 in the width direction, so as to manually correct the position of the absorbent sanitary article semi-finished product S'. In order to ensure the cutting effect, two first spreading rollers 41 at the downstream position of the first spreading deviation rectifying device 4 are arranged inside the arc-shaped cutter 5.

The second spreading deviation correcting device 6 is arranged between the arc-shaped cutter 5 and the clamping device 1 on the downstream side of the arc-shaped cutter 5. The second spreading deviation correcting device 6 has the same structure as the first spreading deviation correcting device 4, and also comprises two pairs of second spreading rollers 61 which can be adjusted in the vertical direction. The two pairs of second spread correction devices 6 are used for respectively correcting the front end portion S1 ' and the rear end portion S2 ' in the width direction of the cut absorbent sanitary article semi-finished product S '.

The pair of second spreading rollers 61 includes two second spreading rollers 61, the pair of second spreading rollers 61 are arranged in a front-back manner in the horizontal direction and in an up-down manner in the vertical direction, and the absorbent sanitary article semi-finished product S' is passed between the pair of second spreading rollers 61.

The other clamping and pressing device 1 is arranged at the downstream side of the arc-shaped cutting knife 5, and the other clamping and pressing device 1 is used for clamping and pressing the semi-finished product S' of the absorbent sanitary product with the leg surrounding arc-shaped opening T. The utility model provides an absorptivity health supplies ' S arc cutting system sets up respectively through the side of the up flow and the side of the low stream at arc cutter 5 the nip pressure device 1 realizes the nip pressure (pressing) around arc cutter 5 to thickness uneven absorptivity health supplies semi-manufactured goods S ' to solve no matter be special sign indicating number special use/during the arc cutter 5 cutting product that many yards are used with concurrently, around the cutting absorptivity health supplies semi-manufactured goods S ' appear that tension change is big and tension is unstable, lead to cutting the size inaccuracy, appear a series of bad problems of cutting such as deckle edge.

The utility model discloses at the up-flow side nip press 1 with it forms to set up first expanding portion K1 and second expanding portion K2 that have adsorption structure simultaneously between the cutter 5 shape expanding conveyer 2, from the up-flow side down-flow side of flow direction see first expanding portion K1 with second expanding portion K2 is "eight" font setting, and the entrance opening that first expanding portion K1 and second expanding portion K2 formed is little, the exit opening is big promptly to guarantee before the cutting of arc cutter 5 the absorption health supplies semi-manufactured goods S ' is at the expanding function of width direction to possess the function of adsorbing the conveying in the expanding, thereby solved absorption health supplies semi-manufactured goods S ' is because shank elastic component S3 ' is asymmetric, appears the phenomenon of fold in width direction, both have guaranteed the accuracy of arc cutter 5 cutting that combines together, The cutting effect promotes pleasing to the eye degree of product and quality. And the requirement of the set distance between the two rollers farthest away on the horizontal line annular path of the conveyor belt of the clamping and pressing device 1 ensures that the arc-shaped cutter 5 can be in a stable clamping and pressing state before and after cutting, thereby ensuring the cutting accuracy and the cutting effect of the arc-shaped cutter 5.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A tenter conveying apparatus for tentering an absorbent sanitary article blank in a width direction while adsorbing and conveying the blank to an arc-shaped cutter on a downstream side, the absorbent sanitary article blank including a front end portion and a rear end portion in the width direction, the tenter conveying apparatus comprising:

a frame provided with a front part and a rear part extending in a width direction;

a first spreading part and a second spreading part which are correspondingly arranged in the width direction and respectively provided with an adsorption structure;

the first expanding part is arranged along the length direction and is arranged at the front part of the rack, and the second expanding part is arranged along the length direction and is arranged at the rear part of the rack and is arranged corresponding to the first expanding part;

wherein the first widening corresponds to a front end portion of the absorbent sanitary article blank, and the second widening corresponds to a rear end portion of the absorbent sanitary article blank; the first spreading part and the second spreading part are arranged in a splay shape or in parallel when viewed from an upstream side to a downstream side in the flow direction.

2. The spread sheet conveyor according to claim 1, further comprising:

the driving part is connected with a motor;

a conveyor belt group surrounding the driving part;

the supporting plate is arranged between the first expanding part and the second expanding part and fixed on the rack, and the supporting plate is used for supporting the middle part of the semi-finished product of the absorbent sanitary product.

3. The spread width conveyor as recited in claim 2,

the adsorption structure of the first spreading part is provided with a first vacuum box which is internally of a hollow structure and is connected with an air suction device, and the first vacuum box adsorbs the front end part of the semi-finished product of the absorbent sanitary product; a first hole with a first origin is formed in the bottom of the first vacuum box;

the adsorption structure of the second spreading part is provided with a second vacuum box which is internally of a hollow structure and is connected with the air suction device, and the second vacuum box adsorbs the rear end part of the semi-finished product of the absorbent sanitary product; and a second hole with a second origin is formed in the bottom of the second vacuum box.

4. The spread conveyor of claim 3, wherein the first spread portion further comprises:

the first flange is fixedly connected with the rack and movably embedded into a first hole of the first vacuum box;

the first conveying roller is arranged at the upstream position of the first vacuum box;

the second conveying roller is arranged at the downstream position of the first vacuum box and is parallel to the first conveying roller;

the first plate is of a uniformly distributed long waist hole structure and is detachably arranged on the surface of the first vacuum box.

5. The spread conveyor of claim 4, wherein the second spread portion further comprises:

the second flange is fixedly connected with the rack and movably embedded into a second hole of the second vacuum box;

the third conveying roller is arranged at the upstream position of the second vacuum box;

the fourth conveying roller is arranged at the downstream position of the second vacuum box and is arranged in parallel with the third conveying roller;

the second plate is of a uniformly distributed long waist hole structure and is detachably arranged on the surface of the second vacuum box.

6. The spread conveyor of claim 5, further comprising:

the first connecting assembly is arranged inside the rack, one end of the first connecting assembly is provided with a first mounting position, the first mounting position is connected with the bottom of the first vacuum box, and a first threaded hole is formed in the other end of the first connecting assembly;

one end of the first adjusting rod is provided with a threaded part, the threaded part extends into the rack and penetrates through a first threaded hole of the first connecting assembly, and the threaded part of the first adjusting rod corresponds to the first threaded hole and is matched with the first threaded hole;

the first handle is arranged at the other end, positioned outside the rack, of the first adjusting rod, and the first expanding part rotates around the first origin point by rotating the first handle;

the second connecting assembly is arranged inside the rack, one end of the second connecting assembly is provided with a second mounting position, the second mounting position is connected with the bottom of the second vacuum box, and a second threaded hole is formed in the other end of the second connecting assembly;

one end of the second adjusting rod is provided with a threaded part, the threaded part extends into the rack and penetrates through a second threaded hole of the second connecting assembly, and the threaded part of the second adjusting rod corresponds to and is matched with the second threaded hole;

the second handle is arranged at the other end, positioned outside the rack, of the second adjusting rod, and the second expanding part rotates around the second origin point by rotating the second handle; and

the limiting plates are respectively arranged at two ends of the first vacuum box and the second vacuum box in the width direction and used for fixing, the limiting plates are provided with arc waist holes which are arranged by taking the first original point/the second original point as centers, and the limiting plates are fixed on the rack through the arc waist holes.

7. The spread sheet conveyor according to claim 6, wherein the driving part includes:

a third driving roller corresponding to the first width expanding portion; and

and a fourth driving roller corresponding to the second widening section, the third driving roller and the fourth driving roller being connected to the motor.

8. The spread-out conveyor of claim 7, wherein the set of conveyor belts comprises:

the third conveying belt is at least annularly arranged on the peripheries of the first conveying roller, the second conveying roller and the third driving roller, through holes are uniformly formed in the third conveying belt, and the through holes correspond to the long waist holes of the first plate of the first vacuum box in arrangement; and

the fourth conveyer belt, the fourth conveyer belt at least the annular set up in the third transfer roller the fourth transfer roller and the periphery of fourth drive roll, evenly set up the through-hole on the fourth conveyer belt, the through-hole with the second vacuum chamber the long waist hole of second board is arranged correspondingly.

9. The spread sheet conveyor according to claim 6,

a first mounting position of the first connecting assembly is provided with a long hole structure, the bottom of the first vacuum box is provided with a first threaded hole corresponding to the long hole position of the first mounting position, the size of the first threaded hole is smaller than that of the long hole in the width direction, and a screw is screwed into the first threaded hole;

and a second mounting position of the second connecting assembly is provided with a long hole structure, the bottom of the second vacuum box is provided with a second threaded hole corresponding to the long hole position of the second mounting position, the size of the second threaded hole is smaller than that of the long hole in the width direction, and the other screw is screwed into the second threaded hole.

10. The spread conveyor according to claim 8, further comprising a tension wheel having a structure in which two rollers corresponding to outer peripheries of the third conveyor belt and the fourth conveyor belt are provided in a width direction, the tension wheel tensioning the third conveyor belt and the fourth conveyor belt, respectively.