JP6001967B2 - Heat-set dough manufacturing apparatus and method - Google Patents

Description

  The present invention relates to an apparatus and a method for manufacturing a heat-set dough.

  The cylindrical fabric knitted by a circular knitting machine is generally then subjected to various treatments such as bleaching, dyeing, dehydration, and drying. Will occur. In order to remove such shrinkage and wrinkles, the tubular fabric is once flattened in the cylinder radial direction and expanded in the direction of increasing the width by flattening (hereinafter sometimes referred to as “flat direction” or “width direction”). In some cases, steam is sprayed in this expanded state (see, for example, Patent Document 1). The tubular fabric after spraying steam is released from the expanded state and contracted in the width direction.

In addition, as a spreading device for spreading the tubular fabric, a device configured to spread the tubular fabric in the opposite direction from the inside with a pair of spreading molds around which an endless belt is wound is known. (For example, see Patent Document 2).
By the way, during knitting with a circular knitting machine, if a plating knitting is performed using a heat-sealing yarn such as polyurethane and other yarns, the knitted tubular fabric has a heat-sealing yarn on all loops only on one side. It is in a state of nestling. Therefore, the tubular fabric knitted in this way is then heated to a temperature at which self-adhesion occurs in the heat-bonding yarn (hereinafter referred to as “heat setting process”. In some cases, compression may be applied. And the stitches are combined. Thereby, even if it cut | judges in arbitrary places, it can finish into the fabric (fabric which can be cut off) which does not fray (for example, refer patent document 3 etc.).

The heat setting process in this case is also performed by steam heating or the like, and substantially the same method and apparatus as the above-mentioned “removing shrinkage and wrinkles” can be employed. The difference is that after the heat setting process, the stitches are combined, and subsequent shrinkage in the width direction is not performed.
However, when heat set processing was performed in the expanded state, there were cases where streaks along the longitudinal direction of the fabric were permanently generated at both side edges in the flat direction (positions to be expanded by the expansion formwork). . The cause of the streaks is that there is a difference in the degree of opening of the stitches or the density difference of the stitches between the both side edges in the flat direction and the front and back sides of the flat shape, and the stitches having a difference in the degree of opening or density difference. It is speculated that this is because they are combined as they are.

JP 59-173366 A Japanese Utility Model Publication No. 62-88794 Japanese Patent No. 3983729

There are cases where the cylindrical fabric is cut open and used as a material for a cut-and-sew (cutting out clothing part fabric), or used for the trunk, legs, arms, etc. while still in a cylindrical shape.
When using a tubular fabric as a tubular body, legs, arms, etc. (for example, when the tube diameter is the body size), finish it into a fabric that can be cut off as described above. Then, it becomes a serious problem at the point which the stripe | line | muscle generate | occur | produced in the both-sides edge part of the flat direction deteriorates the external appearance of clothing.

  In particular, when the fabric spreading rate is increased in order to make the fabric thin, such as a T-shirt, the generated streaks become remarkable. As a result, when it was used as a cylinder, it was impossible to finish it into a fabric that could be cut. In addition, in the case where the tubular fabric is made of rubber knitted fabric (bear milling), since the shrinkage in the width direction before the expansion is very large, the expansion ratio is increased and the same as described above. It was supposed to lead to a good result.

  The present invention has been made in view of the above circumstances, and in the case where heat-setting processing or the like is performed in a state where the flattened cylindrical fabric is expanded in the flat direction (width direction), the expansion is caused. As a heat-set fabric that prevents streaking along the longitudinal direction of the fabric, so that when the tubular fabric is used in a cylindrical shape, it can be finished into a fabric that can be cut off. An object is to provide a manufacturing apparatus and a manufacturing method.

In order to achieve the above object, the present invention has taken the following measures.
That is, the heat-set fabric manufacturing apparatus according to the present invention heats a tubular fabric knitted into a tubular shape using heat-bonding yarn and flattened in the tube radial direction at a temperature equal to or higher than the melting temperature of the heat-bonding yarn. to a heat-setting processing unit that Ru is fixed to the target flat width, the width of the flat direction of the tubular fabric under heating environment equivalent to the heat setting processing unit provided in the loading unit of the heat set process unit Provided with an arrangement that arranges an intermediate width- setting portion and an upstream portion in the transfer direction from the intermediate width- setting portion and a transfer distance that is not affected by heat from the heat-set processing portion with the heat-setting processing portion as a base point It is to be characterized by having a an initial open width portion to open-width to make it become the target flat width equal to or more while holding the temperature lower than the melting temperature of the tubular fabric.

A nip roller is provided in the fabric conveyance path that exits the initial spreading portion toward the intermediate width-determining portion, and applies a feed drive while pressing the cylindrical fabric from both sides, and the nip roller has a width of the cylindrical fabric. It is preferable that the roller is formed to have a roller length that is released by making the side edges of the direction non-contact.
On the other hand, in the method for producing a heat-set fabric according to the present invention, the tubular fabric knitted into a tubular shape using the heat-fusible yarn is kept at a temperature lower than the melting temperature of the heat-fusible yarn. Is expanded in a flat state in the cylinder radial direction so that the flat width is equal to or greater than the target flat width after heat setting, and the heating environment in which the width in the flat direction of the expanded cylindrical fabric is directed to the heat set And adjusting the width so as to obtain a uniform width, and heating the set-up cylindrical dough at a temperature equal to or higher than the melting temperature.

  As for the heat-set cylindrical fabric, a cylindrical shape formed by knitting is applied to a clothing shape.

  If it is the manufacturing apparatus and manufacturing method of the heat setting cloth | dough which concerns on this invention, when performing a heat setting process etc. in the state which spread the flattened cylindrical cloth | fabric in the flat direction (width direction), expansion is carried out. As a cause, streaks along the longitudinal direction of the fabric do not occur. Therefore, when the cylindrical fabric is used as it is, it can be finished into a fabric that can be cut.

It is the side view which showed typically the manufacturing apparatus of the heat setting dough concerning this invention. It is the top view which showed the condition where a cylindrical fabric is expanded in the manufacturing apparatus of the heat set fabric which concerns on this invention. It is the front view which showed the nip roller employable with the manufacturing apparatus of the heat setting dough concerning this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show a heat-set dough manufacturing apparatus 1 according to the present invention. The manufacturing apparatus 1 includes a heat set processing unit 2, an intermediate widening unit 3 provided in a carry-in unit of the heat set processing unit 2, and an initial spread provided further upstream than the intermediate widening unit 3. Part 4. The heat set processing unit 2, the intermediate widening unit 3, and the initial spreading unit 4 are connected in series by a fabric conveyance path 5 that conveys the cylindrical fabric W.

The dough conveying path 5 is a drive type or non-drive type (rolling type) pinch roller that clamps a flattened cylindrical fabric W from both sides of the flat shape, and a flattened cylindrical fabric W is wound around it. A guide roller, an idle roller, a guide bar, or the like that is guided in the conveying direction while being in a state or a single-sided contact state is configured by arranging them at a predetermined interval.
If the manufacturing apparatus 1 feeds the cylindrical fabric W from the conveyance start end side (each left side in FIGS. 1 and 2) to the initial spreading portion 4 if it follows the direction in which the cylindrical fabric W is conveyed by the fabric conveyance path 5. Next, it is said that each part (4, 3, 2) is arranged so that the cylindrical fabric W is fed into the intermediate width setting unit 3 and then the cylindrical fabric W is fed into the heat setting processing unit 2. be able to. The cylindrical dough W after passing through the heat setting processing unit 2 is carried out to the next process through the cooling conveyance band 6 that returns to normal temperature.

  It is assumed that the cylindrical fabric W processed by the manufacturing apparatus 1 has already been flattened when it is supplied to the conveyance start end portion of the fabric conveyance path 5. In addition, this tubular fabric W is knitted by performing a plating knitting using a heat fusion yarn such as polyurethane as a splicing yarn and using a yarn other than the heat fusion yarn (for example, a polyester yarn) as a ground yarn. Shall be. This cylindrical fabric W is made of rubber knitted bear mills (bear smooth and other changing structures) using a double knitting machine (a circular knitting machine having a cylinder holding a cylinder needle and a dial holding a dial needle). Included).

The initial cloth spreading section 4 is a place where the cylindrical cloth W supplied to the conveyance start end of the cloth conveyance path 5 is actively spread. In order to perform this spreading, it is an important condition to keep the temperature lower than the melting temperature of the heat-sealing yarn used as the splicing yarn.
Here, the “melting temperature” is not intended to liquefy the heat-bonding yarn, but may be melted to such an extent that the surface of the yarn causes self-adhesion, so “melting point” and “decomposition point” are not necessarily the same. It's not temperature. What is important is that self-adhesiveness is generated in the heat-fusible yarn by heating, and therefore the temperature at which the temperature is raised by heating and the temperature (numerical value) at which the temperature is kept lower than that are not particularly limited.

  The “low temperature than the melting temperature” should be a little lower than the melting temperature, but it is preferable to set the temperature to room temperature, for example, in the non-molten state of the heat fusion yarn (other than the heat fusion yarn). In order to maintain a state of being able to move freely without being coupled to the melting temperature, it is desirable to produce a clear temperature difference from the melting temperature. However, it goes without saying that the temperature is not required to be lower than normal temperature.

In addition, as long as the “heat-bonding yarn” is a yarn that is self-adhesive when heated, the material and the thickness of the yarn are not limited. Moreover, in order to produce self-adhesiveness, it is good also as a material which requires not only heating but compression.
In addition, the flat width when the cylindrical fabric W is spread by the initial spreading portion 4 should be equal to or greater than the target flat width on the basis of the target flat width to be fixed by the heat setting processing portion 2. As a guide.

For example, as shown in FIG. 2, the flat width of the cylindrical fabric W supplied to the conveyance start end of the fabric conveyance path 5 (simply flattened) is set to H0. In addition, the target flat width to be fixed by the heat setting processing portion 2 (not the flat width that is passing through the heat setting processing portion 2, but the flat width when the heat setting processing portion 2 is in a stable state that does not contract by passing through the heat setting processing portion 2) Is set to H3, the initial spreading portion 4 is set to a flat width H1 that is equal to or larger than the target flat width H3. The target flat width H3 at this time is naturally larger than the flat width H0 at the conveyance start end of the fabric conveyance path 5 (H0 <H3 ≦ H1).

As described above, in the initial spreading portion 4, the cylindrical fabric W that has been spread to have the fabric width H <b> 1 is sent out to the intermediate width-determining portion 3.
The specific configuration of the initial spreading portion 4 is not particularly limited. For example, it comprises a pair of expansion molds 10 and 10 around which an endless belt is wound, and is configured to push the cylindrical fabric W in the opposite direction from the inside by the expansion molds 10 and 10. Things (such as those shown as Patent Document 2) can be used.

The intermediate widening portion 3 causes variation in the flat width when the expanded tubular fabric W (of the flat width H1) fed from the initial widening portion 4 passes through the heat set processing portion 2. In order to prevent or correct shrinkage beyond the limit, the width is adjusted so as to be uniform with respect to the flat width H1.
Ideally, the intermediate width setting unit 3 has a processing target of a uniform width of the cylindrical fabric W. However, a small variation inevitably caused by fabric characteristics or the like is within an allowable range of processing. The intermediate width setting portion 3 is intended to widen the cylindrical fabric W passing through the heat setting processing portion 2, and therefore is disposed as close as possible to the heat setting processing portion 2 (that is, the heat setting processing portion 2), and therefore, under the influence of heat from the heat set processing unit 2, the heating environment is similar to that of the heat set processing unit 2.

Therefore, in the intermediate width-determining portion 3, it is assumed that aggressive expansion of the tubular fabric W, expansion of a large expansion rate, and long-term continuous expansion synchronized with the fabric conveyance are not performed. At the most, when passing through the intermediate width-determining portion 3, the minimum necessary expansion is performed to correct the partial width shrinkage.
In addition, since the initial spreading part 4 is a place where the cylindrical fabric W is actively spread as described above, it is preferable that the initial spreading part 4 be arranged so as not to be affected by heat from the heat setting processing part 2. It is preferable that the heat setting processing unit 2 be installed apart from each other in terms of the conveyance distance of the cylindrical fabric W. In this case, as shown in FIG. 2, the intermediate beveling portion 3 is separated in the downstream direction with respect to the initial spreading portion 4, and the flat width H <b> 1 spread by the initial spreading portion 4 reaches the intermediate spreading portion 3. Of course, it is possible to shrink gradually.

That is, when the average flat width of the cylindrical fabric W that passes through the intermediate width-determining portion 3 is set to H2, H2 <H1 may be satisfied. Therefore, in such a case, the flat width H1 when the cylindrical fabric W is expanded in the initial expansion portion 4 is the width contraction that occurs before reaching the intermediate widening portion 3 (the ratio of the flat width H2 due to the contraction). ) It is necessary to set in anticipation.
The specific configuration of the intermediate widening portion 3 is not limited. For example, a pair of magnetic material frames 11, 11 are passed through the cylindrical fabric W, and the electromagnets 12, 12 are fixed to the mold frames 11, 11 corresponding to the outside of the cylindrical fabric W. A known spreading device (disclosed in Japanese Patent Laid-Open No. 2002-13063) or the like configured to float so that the mold 11 and the electromagnet 12 are in non-contact or light contact while being attracted outward in the width direction. It can be used for widening.

In addition, when reprinted, the intermediate width extending portion 3 does not perform active expansion, expansion with a large expansion ratio, or long-term continuous expansion in synchronization with the cloth conveyance, and partial width shrinkage. Therefore, even if a known spreading device is used, the purpose and effect of use are naturally different.
The heat setting section 2 is where the cylindrical fabric W is heated. In the heat setting section 2, it is an important condition that heating is performed at a temperature equal to or higher than the melting temperature of the heat-sealing yarn used as the splicing yarn. Here, the definitions of “thermal fusing yarn” and “melting temperature” are as described above.

Specifically, in the heat setting processing unit 2, the cylindrical fabric W is conveyed in a drum shape or a meandering manner by induction by the fabric conveyance path 5, and thus the tubular fabric W is stretched along the flat direction and the conveyance direction. And heating by steam injection or the like. In addition, you may make it provide the secondary beveling apparatus 15 which has the same structure and an effect | action as the intermediate | middle beveling part 3 with respect to the carrying-out part of this heat set process part 2. FIG.

Incidentally, as shown in FIG. 3, it is preferable to provide a nip roller 17 for applying a feeding drive while pressing the cylindrical fabric W from both the front and back surfaces of the flat shape. The nip roller 17 is formed to have a roller length that releases both side edges of the cylindrical fabric W in the non-contact state.
Therefore, there exists an advantage which can prevent that a crease and a wrinkle generate | occur | produce with respect to the edge part of the width direction of the cylindrical fabric W as much as possible. Such a nip roller 17 is particularly arranged in the path from the initial spreading portion 4 to the intermediate width extending portion 3, more specifically, as close as possible to the carry-out portion of the initial spreading portion 4 (perform spreading). It is preferable that

Next, a method for manufacturing a heat-set dough (a method for manufacturing a heat-set dough according to the present invention) using the manufacturing apparatus 1 of the present invention having such a configuration will be described.
As the cylindrical fabric W, a cylindrical shape formed by knitting is applied as it is to a clothing shape (for example, a trunk, a leg, an arm, etc. of clothing).
First, the cylindrical fabric W knitted into a cylindrical shape using a heat-sealing yarn such as polyurethane is fed into the initial spreading portion 4 while being kept at a temperature lower than the melting temperature of the heat-sealing yarn, and heat set processing The cloth is spread so as to be equal to or larger than the target flat width H3 by the portion 2.

Next, the cylindrical fabric W spread by the initial spreading portion 4 is sent to the intermediate width-determining portion 3, and the cylindrical fabric W is widened. Under this circumstance, the tubular fabric W is affected by heat from the heat setting section 2.
Then, the tubular dough W that has been widened by the intermediate widening portion 3 is sent to the heat setting processing portion 2 and is heated and set at a temperature equal to or higher than the melting temperature of the heat fusion yarn.

Thereafter, the tubular dough W is returned to the room temperature while being cooled by passing it to the cooling and conveying state, and is carried out to the next step.
The cylindrical fabric W (heat set fabric) manufactured in this way has no streaking along the longitudinal direction of the fabric due to spreading even after the target flat width H3 is reached at room temperature. . For this reason, it is possible to use the tubular fabric W as a clothing form in a tubular shape without any problem. That is, it is possible to heat-set the cylindrical fabric W that has been knitted using a heat-sealing yarn such as polyurethane, and the fabric can be finished.

The present invention is not limited to the embodiment described above, and can be changed as appropriate according to the embodiment.
For example, the invention is not limited to the tubular fabric W plated with a heat-sealing yarn such as polyurethane, but is intended for all knitted fabrics using yarns other than the heat-sealing yarn. can do. Specifically, it can be employed effectively in the case of knitted fabric using a Po Li ester or nylon.

  Of course, the tubular fabric W (heat set fabric) obtained after manufacture is not limited in any way to use the tubular shape as a clothing shape as it is, and is used for cutting out the part fabric for a cut-and-sew. Also good. In this case, since no streaks along the longitudinal direction of the fabric are generated in the cylindrical fabric W, the fabric area can be effectively used, and advantages such as an improvement in yield can be obtained.

Needless to say, the tubular fabric W may be a flat sheet knitted using a single knitting machine.
The detailed configuration of the initial spreading portion 4, the detailed configuration of the intermediate width-determining portion 3, the detailed configuration of the heat setting processing portion 2, etc. may be any conventional known device, and is not limited.
The initial spreading portion 4 can be structured to be separable from the heat setting processing portion 2 and the intermediate width setting portion 3. In this case, when using the heat setting processing part 2 for a purpose other than heat setting (such as “removing shrinkage or wrinkles” as described in Patent Document 1), the initial spreading part 4 is used. There is an advantage that another line specification can be easily constructed, for example, by separating and setting it to the unused state, and instead performing the expansion by the intermediate width-determining portion 3.

  It should be noted that if a moving wheel is provided at the lower end of the frame leg of the device frame of the initial spreading part 4, the initial spreading part 4 can be disconnected and connected more easily and quickly. It becomes.

DESCRIPTION OF SYMBOLS 1 Manufacturing apparatus 2 Heat set process part 3 Intermediate | middle extending part 4 Initial spreading part 5 Material | dough conveyance path 6 Cooling conveyance zone 10 Forming frame 11 Mold 12 Electromagnet 15 Secondary width | variety apparatus 17 Nip roller H0 Initial flat width H1 Initial Flat width H2 at the expanded portion Flat width H3 at the intermediate width portion H3 Target flat width W Cylindrical fabric

Claims (4)

And heat-setting processing unit for heating the tubular cloth which is a flattened knitted and cylinder radially into a cylindrical shape using a thermal fusion yarn at a temperature higher than the melt temperature of the thermal fusion yarn Ru allowed to settle to the target flat width ,
An intermediate width setting portion that is provided in the carry-in portion of the heat-set processing portion and adjusts the width in the flat direction of the tubular fabric under a heating environment similar to the heat-set processing portion;
The tubular fabric is provided by the thermal influence from the heat-set processing unit and the heat setting processing unit a upstream portion of the conveyance direction than the intermediate tentering unit as a base point releases the inferior conveyance distance arrangement An initial spreading portion that spreads to be equal to or greater than the target flat width while maintaining a temperature lower than the melting temperature;
An apparatus for producing heat-set dough, comprising:   A nip roller is provided in the fabric conveyance path that exits the initial spreading portion toward the intermediate width-determining portion, and applies a feed drive while pressing the cylindrical fabric from both sides, and the nip roller has a width of the cylindrical fabric. 2. The apparatus for producing a heat-set dough according to claim 1, wherein the heat-set dough manufacturing apparatus is formed to have a roller length that releases the edges on both sides in a non-contact state. While maintaining the cylindrical fabric knitted into a cylindrical shape using the heat-sealing yarn at a temperature lower than the melting temperature of the heat-sealing yarn, the cylindrical fabric is equal to or more than the target flat width after heat setting. Spread in a flat state in the cylinder radial direction,
The width of the flattened direction in the expanded cylindrical fabric is adjusted so as to be a uniform width under a heating environment directed to the heat set, and the width is determined.
Heating the set-up cylindrical dough above the melting temperature and heat setting,
A method for producing a heat-set dough characterized by the above.   4. The method for producing a heat-set dough according to claim 3, wherein the heat-set tube-shaped dough is applied to a clothing form in a tubular shape formed by knitting.

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