Cooling device

Abstract

To improve operation efficiency.SOLUTION: The image forming apparatus includes a duct 31, a plurality of cooler units 33 disposed side by side along the extending direction of the duct 31, a sucking device 32 connected to one end of the duct 31 and capable of sucking air in a space Sa in the duct, and a filter 34 configured to allow the air sucked into a sucking port 32a of the sucking device 32 to pass through. The duct space Sa is connected to the yarn running spaces Sb formed in each cooling unit 33 in the direction orthogonal to the extending direction of the duct 31. The filter 34 is removably provided between the end yarn traveling space Sb, which is closest to the suction inlet 32a among the plurality of yarn traveling spaces Sb, and the suction inlet 32a. In the duct 31, a maintenance port 32a is formed between the yarn running space Sb at the end and the sucking port 31a1. A lid 36 capable of closing the 31a1 of the maintenance port is provided.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a cooling device for cooling yarn. [Background technology]

[0002] Patent Document 1 discloses a cooling device provided in a false twisting machine that applies false twisting to a running yarn. The cooling device includes a cooling unit that defines a yarn running space in which the yarn runs, a duct that defines an internal duct space, and a negative pressure generating device (hereinafter referred to as a suction device) that is located at one end of the duct. The yarn running space is connected to the internal duct space. The suction device sucks gas from the internal duct space to generate negative pressure, thereby generating an airflow from the yarn running space toward the internal duct space. This airflow cools the yarn running in the yarn running space. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2023-012097 Summary of the Invention [Problem to be solved by the invention]

[0004] Generally, yarns handled in false twisting machines are treated with an oil to ensure smooth yarn travel. Therefore, in the cooling device described above, foreign matter such as dust containing oil and lint floats in the space inside the duct connected to the yarn travel space. Therefore, a filter is fixed to the suction port of the suction device to prevent these foreign matter from entering the suction device. Accumulation of foreign matter in the filter reduces the performance of the suction device, so the filter must be cleaned periodically. The filter must be accessed through a maintenance opening formed in the duct. Therefore, cleaning the filter requires the operator to reach in through the maintenance opening in an unstable position, resulting in poor workability. Consequently, cleaning the filter takes time and reduces operating efficiency.

[0005] An object of the present invention is to provide a cooling device that can improve operating efficiency. [Means for solving the problem]

[0006] A cooling device according to a first aspect of the present invention is provided in a false twisting machine that applies false twisting to a running yarn, and includes: a duct formed of a tubular member; a plurality of cooling units arranged side by side along an extending direction of the duct; a suction device connected to one end of the duct and capable of sucking gas in a duct internal space of the duct; and a filter configured to allow gas sucked into a suction port of the suction device to pass through, wherein the duct internal space is connected to a plurality of yarn traveling spaces formed in each of the cooling units and through which the yarn travels, in a direction perpendicular to the extending direction, and the filter is detachably provided in the duct internal space between an end yarn traveling space of the plurality of yarn traveling spaces that is closest to the suction port in the extending direction and the suction port, and the duct has a duct opening formed between the end yarn traveling space and the suction port, through which the filter can pass. and a support surface capable of supporting the filter is provided on the inner surface of the filter facing the duct opening. A cover capable of closing the duct opening is provided. an elastic member that is sandwiched between the lid and the filter when the lid closes the duct opening; Prepared When the cover closes the duct opening, the filter is urged toward the support surface by the restoring force of the elastic member. .

[0007] In the present invention, the filter can be removed and removed from the duct through the duct opening before cleaning. This improves the workability of the filter cleaning work and shortens the time required for the cleaning work. Furthermore, after removing the filter, another filter can be installed and the device can be operated. This improves operating efficiency. Furthermore, when the duct opening is closed by the lid, the filter is urged toward the support surface and pressed against the support surface, thereby enabling the filter to be positioned in the opposing direction between the duct opening and the support surface.

[0008] Cooling device according to the second invention a cooling device provided in a false twisting machine that applies false twisting to a running yarn, the cooling device comprising: a duct formed of a tubular member; a plurality of cooling units arranged side by side along the extending direction of the duct; a suction device connected to one end of the duct and capable of sucking gas from a duct interior space of the duct; and a filter configured to allow gas sucked into a suction port of the suction device to pass through, the duct interior space being connected in a direction perpendicular to the extending direction to a plurality of yarn traveling spaces formed in each of the cooling units through which the yarn travels, the filter being detachably provided in the duct interior space between the suction port and an end yarn traveling space that is closest to the suction port in the extending direction among the plurality of yarn traveling spaces, the duct having a duct opening formed between the end yarn traveling space and the suction port, the duct also comprising: a lid capable of closing the duct opening; and a pair of guide members extending in a direction intersecting the opening direction of the suction port, the filter being fitted between the pair of guide members.

[0009] In the present invention, The filter can be removed and removed from the duct through the duct opening before cleaning. This improves the workability of the filter cleaning work and shortens the time required for cleaning. Furthermore, after removing the filter, another filter can be attached and the device can be operated. This improves operating efficiency. Furthermore, the filter's position in the width direction can be determined.

[0010] In the cooling device according to the third aspect of the present invention, In the second invention, the lid is integral with the filter.

[0011] In the present invention, Simply attaching the filter allows you to close the duct opening, and also prevents the cover from being lost.

[0012] In the cooling device according to the fourth aspect of the present invention, In the first or second aspect of the present invention, the cover is attached to the duct in a state where it can move between an open position where the duct opening is opened and a closed position where the duct opening is closed.

[0013] In the present invention, Since the lid does not come off the duct, it is possible to avoid losing the lid.

[0014] In the cooling device according to the fifth aspect of the present invention, In any one of the first to fourth aspects of the present invention, the filter is attached so as to cover the suction port. .

[0015] In the present invention, It is possible to more reliably prevent foreign objects from entering the suction device. .

[0016] The cooling device of the sixth invention is any of the first to fifth inventions and is provided with a fixing mechanism that can take a fixed state in which the lid is fixed with the duct opening closed, and an unfixed state in which the lid is not fixed.

[0017] In the present invention, by keeping the locking mechanism in a locked state during operation, it is possible to prevent the lid from opening unintentionally.

[0018] No. 7 The cooling device according to the present invention is 6 In any one of the above inventions, the filter includes a contact surface that can come into contact with the surface of the filter on the suction port side, and a biasing member that biases the filter against the contact surface.

[0019] In the present invention, the filter can be fixed by pressing the filter against the contact surface with the biasing member.

[0020] No. 8 In the cooling device according to the present invention, the first to second 7 In any of the above inventions, the filter has a metal frame body that forms a frame opening, and a metal mesh body welded to one side of the frame body in the opening direction of the frame opening, and the filter is attached so that the one side coincides with the suction port side.

[0021] If foreign matter adheres to the part of the mesh body that is welded to the frame body, it is difficult to remove the foreign matter from the mesh body. In this invention, the filter is attached so that the side of the frame body where the mesh body is attached coincides with the suction port side, so foreign matter carried by the airflow toward the suction port can be prevented from adhering to the part of the mesh body that is welded to the frame body. This makes filter cleaning easy. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a side view of a false twisting machine according to an embodiment of the present invention. [Figure 2] FIG. 1 is a schematic diagram showing a false twisting machine laid out along the yarn path. [Figure 3] FIG. [Figure 4] FIG. 4 is a simplified partial cross-sectional view taken along line IV-IV in FIG. 3. [Figure 5] 1(a) is a front view of the filter, and FIG. 1(b) is a cross-sectional view taken along line Vb-Vb in FIG. [Figure 6] 6A is a cross-sectional view taken along line VIa-VIa in FIG. 4, and FIG. 6B is a cross-sectional view taken along line VIb-VIb in FIG. [Figure 7] 5 is an enlarged view of the vicinity of one end of the duct in FIG. 4 in the machine base longitudinal direction. [Figure 8] (a) shows the lid in the open position, and (b) shows the lid in the closed position. [Figure 9] FIG. 10 is a top view of the duct near one end in the machine frame longitudinal direction. [Figure 10] 10A and 10B are diagrams showing a first modified example, in which FIG. 10A shows a state in which the maintenance port is open, and FIG. 10B shows a state in which the maintenance port is closed. [Figure 11] 10A and 10B are diagrams showing a second modified example, in which (a) is a cross-sectional view taken along a plane perpendicular to the height direction, and (b) is a cross-sectional view taken along a plane perpendicular to the perpendicular direction. DETAILED DESCRIPTION OF THE INVENTION

[0023] A false twisting machine 1 according to a preferred embodiment of the present invention will be described with reference to the drawings. The direction perpendicular to the plane of the paper in Fig. 1 is the machine base longitudinal direction, and the left-right direction of the paper is the machine base width direction. The direction perpendicular to both the machine base longitudinal direction and the machine base width direction is the vertical direction in which gravity acts. The machine base longitudinal direction and the machine base width direction are generally parallel to the horizontal direction.

[0024] (Overall configuration of false twisting machine) The false twisting machine 1 is configured to be able to false twist a yarn Y made of a synthetic fiber such as nylon (a polyamide fiber) or polyester. As shown in FIGS. 1 and 2, the false twisting machine 1 includes a yarn supplying section 2 for supplying the yarn Y, a processing section 3 for false twisting the yarn Y supplied from the yarn supplying section 2, and a winding section 4 for winding the yarn Y processed by the processing section 3 onto a winding bobbin Bw. As shown in FIG. 2, a plurality of components of the yarn supplying section 2, the processing section 3, and the winding section 4 are arranged in the longitudinal direction of the machine base. The longitudinal direction of the machine base is a direction perpendicular to the running plane of the yarn Y (the plane of the paper in FIG. 1) formed by the yarn path from the yarn supplying section 2 through the processing section 3 to the winding section 4.

[0025] The yarn supplying unit 2 has a creel stand 5 that holds multiple yarn supply packages Ps. The yarn supplying unit 2 supplies multiple yarns Y to the processing unit 3. The processing unit 3 false twists the yarns Y supplied from the yarn supply packages Ps. The processing unit 3 mainly includes, from upstream in the yarn running direction, a first feed roller 11, a twist stop guide 12, a first heating device 13, a cooling device 14, a false twist device 15, a second feed roller 16, an intertwining device 17, a third feed roller 18, a second heating device 19, and a fourth feed roller 20. The winding unit 4 has multiple winding devices 21. Each winding device 21 winds the yarn Y false-twisted in the processing unit 3 onto a winding bobbin Bw to form a winding package Pw.

[0026] The false twisting machine 1 has a main machine base 8 and a winding table 9 arranged at a distance in the width direction of the machine base. The main machine base 8 and the winding table 9 extend over approximately the same length in the longitudinal direction of the machine base. The main machine base 8 and the winding table 9 are arranged to face each other in the width direction of the machine base. The upper part of the main machine base 8 and the upper part of the winding table 9 are connected by a support frame 10. The devices that make up the processing unit 3 are mainly attached to the main machine base 8 and the support frame 10. The devices that make up the winding unit 4 are attached to the winding table 9. The main machine base 8, the winding table 9, and the support frame 10 form a work space A where an operator can perform tasks such as threading on each device. The yarn path is formed so that the yarn Y mainly runs around the work space A.

[0027] The false twisting machine 1 has a unit called a span, which includes a pair of a main frame 8 and a winding frame 9 arranged opposite each other. In one span, a plurality of processing units (also called spindles) are arranged in a row in the longitudinal direction of the frame, with yarn paths formed so that they pass through the devices that make up the processing section 3. This allows one span to simultaneously false twist a plurality of yarns Y running in a row in the longitudinal direction of the frame. As shown in FIG. 1, in the false twisting machine 1, the spans are arranged symmetrically on the left and right sides of the page, with the center line C of the main frame 8 in the width direction of the frame as the axis of symmetry. The main frame 8 is common to both the left and right spans. In addition, a plurality of spans are arranged in the longitudinal direction of the frame.

[0028] (Configuration of processing part) The configuration of the processing unit 3 will be described with reference to Figures 1 and 2. The first feed roller 11 is configured to unwind the yarn Y from the yarn supply package Ps attached to the yarn supplying unit 2 and feed it to the first heating device 13. For example, as shown in Figure 2, the first feed roller 11 is configured to feed one yarn Y to the first heating device 13. The first feed roller 11 may be configured to feed each of adjacent yarns Y downstream in the yarn traveling direction. The twist stop guide 12 is configured to prevent the twist imparted to the yarn Y by the false twist device 15 from propagating upstream of the twist stop guide 12 in the yarn traveling direction.

[0029] The first heating device 13 is configured to heat the yarn Y fed from the first feed roller 11. For example, as shown in FIG. 2, the first heating device 13 is configured to be able to heat two yarns Y, but is not limited to this. The first heating device 13 may be configured to be able to heat, for example, one yarn Y. Alternatively, the first heating device 13 may be configured to be able to heat three or more yarns Y.

[0030] The cooling device 14 is configured to cool the yarn Y heated by the first heating device 13. The cooling device 14 is a non-contact device that uses cooling air to cool multiple adjacent yarns Y. The detailed configuration of the cooling device 14 will be described later.

[0031] The false twist device 15 is disposed downstream in the yarn running direction of the cooling device 14. The false twist device 15 is configured to impart a twist to the yarn Y. The false twist device 15 is, for example, a known disk friction type false twist device or a known belt type false twist device, but is not limited to these.

[0032] The second feed rollers 16 are configured to feed the yarn Y processed by the false twist device 15 to the entangling device 17. The conveying speed of the yarn Y by the second feed rollers 16 is faster than the conveying speed of the yarn Y by the first feed rollers 11. As a result, the yarn Y is draw-twisted between the first feed rollers 11 and the second feed rollers 16.

[0033] The interlacing device 17 is configured to interlace the yarn Y. The interlacing device 17 has, for example, a known interlace nozzle that interlaces the yarn Y by airflow.

[0034] The third feed roller 18 is configured to feed the yarn Y traveling downstream of the interlacing device 17 in the yarn traveling direction to the second heating device 19. For example, as shown in FIG. 2 , the third feed roller 18 is configured to feed one yarn Y to the second heating device 19. The third feed roller 18 may be configured to feed each of adjacent yarns Y downstream in the yarn traveling direction. The conveyance speed of the yarn Y by the third feed roller 18 is slower than the conveyance speed of the yarn Y by the second feed roller 16. Therefore, the yarn Y is relaxed between the second feed roller 16 and the third feed roller 18.

[0035] The second heating device 19 is configured to heat the yarn Y fed from the third feed roller 18. The second heating device 19 extends in the vertical direction, and one is provided for each span.

[0036] The fourth feed roller 20 is configured to feed the yarn Y heated by the second heating device 19 to the winding device 21. For example, as shown in FIG. 2, the fourth feed roller 20 is configured to be able to feed one yarn Y to the winding device 21. The fourth feed roller 20 may be configured to be able to feed adjacent yarns Y each downstream in the yarn running direction. The conveyance speed of the yarn Y by the fourth feed roller 20 is slower than the conveyance speed of the yarn Y by the third feed roller 18. Therefore, the yarn Y is relaxed between the third feed roller 18 and the fourth feed roller 20.

[0037] In the processing unit 3 configured as described above, the yarn Y drawn between the first feed roller 11 and the second feed roller 16 is twisted by the false twist device 15. The twist formed by the false twist device 15 propagates up to the twist stop guide 12, but does not propagate upstream of the twist stop guide 12 in the yarn traveling direction. The yarn Y, to which twist has been imparted while being drawn, is heated and heat-set by the first heating device 13, and then cooled by the cooling device 14. The yarn Y is untwisted downstream of the false twist device 15 in the yarn traveling direction, but the wavy false-twisted state of the yarn Y is maintained by the heat-setting (i.e., the crimp of the yarn Y is maintained).

[0038] The false-twisted yarn Y is entangled by the entangling device 17 while being relaxed between the second feed roller 16 and the third feed roller 18, and then guided downstream in the yarn running direction. The yarn Y is then heat-treated by the second heating device 19 while being relaxed between the third feed roller 18 and the fourth feed roller 20. Finally, the yarn Y sent from the fourth feed roller 20 is wound by the winding device 21.

[0039] (Configuration of winding section) The configuration of the winding unit 4 will be described with reference to Fig. 2. The winding unit 4 has a winding device 21 provided on each spindle. Each winding device 21 is configured to be able to wind onto one winding bobbin Bw. The winding device 21 mainly has a fulcrum guide 41, a traverse device 42, and a cradle 43.

[0040] The fulcrum guide 41 is a guide that serves as a fulcrum when the yarn Y is traversed. The traverse device 42 is configured to be able to traverse the yarn Y using the traverse guide 44. The cradle 43 is configured to rotatably support the winding bobbin Bw. A contact roller 45 is disposed near the cradle 43. The contact roller 45 comes into contact with the surface of the winding package Pw and applies contact pressure.

[0041] In the winding section 4 configured as above, the yarn Y fed from the fourth feed roller 20 is wound onto the winding bobbin Bw by the winding devices 21 to form a winding package Pw.

[0042] (Detailed configuration of the cooling device) Next, the configuration of the cooling device 14 will be described in more detail with further reference to Figures 3 to 5. The vertical direction of the paper in Figure 4 is defined as the height direction. The height direction is a direction perpendicular to the longitudinal direction of the machine base. In this embodiment, the height direction has at least a vertical component. In this embodiment, one side in the height direction can be roughly rephrased as the lower side. Furthermore, the other side in the height direction can be roughly rephrased as the upper side. However, the relationship between the height direction and the vertical direction can change depending on the orientation in which the cooling device 14 is disposed. Furthermore, for convenience of explanation, the direction perpendicular to both the longitudinal direction of the machine base and the height direction will be defined as the orthogonal direction.

[0043] 3 and 4, the cooling device 14 mainly includes a duct 31, a suction device 32, and a plurality of cooling units 33. The number of cooling units 33 can be set arbitrarily. Furthermore, as shown in FIG. 4, the cooling device 14 includes a filter 34 removably provided in the duct 31.

[0044] The duct 31 is formed of a tubular member. In this embodiment, the duct 31 extends linearly as a whole. The duct 31 extends along the longitudinal direction of the machine base. The cross section of the duct 31 on a plane perpendicular to the longitudinal direction of the machine base is rectangular (see FIG. 6(b)). The duct 31 has an upper wall 31a and a lower wall 31b perpendicular to the height direction, and two side walls 31c perpendicular to the orthogonal direction. The duct 31 defines an internal duct space Sa defined by the upper wall 31a, the lower wall 31b, and the two side walls 31c.

[0045] As shown in Fig. 4, a plurality of slits 31b1 are formed in the lower wall 31b. The slits 31b1 are arranged side by side in the longitudinal direction of the machine frame. Each slit 31b1 extends in the perpendicular direction. The slits 31b1 are individually provided corresponding to each of the cooling units 33. The slits 31b1 connect the duct space Sa to a yarn traveling space Sb (described later) formed in each cooling unit 33.

[0046] 3 and 4, the suction device 32 is connected to one end of the duct 31 in the machine base longitudinal direction. The suction device 32 is capable of sucking air from the duct interior space Sa. The suction device 32 is, for example, a known blower.

[0047] 3 and 4, the cooling units 33 are arranged side by side along the longitudinal direction of the machine frame (the extension direction of the duct 31). The cooling units 33 are individually provided corresponding to the multiple yarns Y. The cooling units 33 are attached to the lower surface of the lower wall 31b of the duct 31.

[0048] As shown in FIG. 4, each cooling unit 33 has a pair of plates 33a, 33b. The plates 33a, 33b are both arranged with their thickness direction aligned with the longitudinal direction of the machine base, and extend in the perpendicular direction. The plates 33a, 33b are arranged with a gap between them in the longitudinal direction of the machine base. The space extending in the perpendicular direction between the plates 33a, 33b is a yarn traveling space Sb in which the yarn Y travels. The yarn traveling space Sb is connected to the duct internal space Sa via a slit 31b1 formed in the bottom wall 31b of the duct 31. The yarn traveling space Sb is connected to the duct internal space Sa in the height direction (the direction perpendicular to the extension direction of the duct 31).

[0049] A surface of the plate 33a facing the plate 33b is provided with a plurality of contact bodies 33a1 spaced apart from one another in the orthogonal direction. A surface of the plate 33b facing the plate 33a is provided with a plurality of contact bodies 33b1 spaced apart from one another in the orthogonal direction. The contact bodies 33a1 and 33b1 are arranged at different positions from one another in the orthogonal direction. This prevents the yarn Y traveling in the yarn traveling space Sb from unintentionally contacting portions of the surfaces of the plates 33a and 33b that define the yarn traveling space Sb, where the contact bodies 33a1 and 33b1 are not provided.

[0050] Here, the airflow generated by the cooling device 14 will be described. In FIG. 4, the arrows indicate the airflow generated when the cooling device 14 is operating. In the cooling device 14, the suction device 32 sucks air from the duct space Sa, thereby generating a negative pressure in the duct space Sa. Note that negative pressure means a pressure lower than atmospheric pressure (more specifically, in this embodiment, the atmospheric pressure in the space outside the cooling device 14). As a result, air in the yarn traveling space Sb flows out from the upper end of the yarn traveling space Sb into the duct space Sa, and outside air flows into the yarn traveling space Sb from the lower end of the yarn traveling space Sb. In other words, an airflow is generated from the yarn traveling space Sb toward the duct space Sa. This airflow cools the yarn Y traveling in the yarn traveling space Sb.

[0051] As shown in FIG. 4, the filter 34 is removably provided in the duct internal space Sa between the yarn traveling space Sb and the suction port 32a of the suction device 32. More specifically, the filter 34 is provided between the suction port 32a and the end yarn traveling space Sb that is closest to the suction port 32a in the longitudinal direction of the machine (the leftmost one in FIG. 4) among the multiple yarn traveling spaces Sb. In this embodiment, the filter 34 is attached so as to cover the suction port 32a. The filter 34 may also be attached at a position away from the suction port 32a. The filter 34 is configured to allow air sucked into the suction port 32a to pass through. As shown in FIG. 3, the removed filter 34 can be taken out of the duct 31 through a maintenance opening 31a1 (a duct opening of the present invention) formed in the upper wall 31a of the duct 31.

[0052] As shown in Figures 5(a) and 5(b), the filter 34 has a frame body 34a and a mesh body 34b. Both the frame body 34a and the mesh body 34b are made of metal. The frame body 34a is formed by subjecting a plate-shaped member to sheet metal processing. In the following description, the thickness direction of the frame body 34a will simply be referred to as the thickness direction.

[0053] The frame body 34a forms a frame opening 34a1. The frame opening 34a1 is a through-hole that penetrates the frame body 34a in the thickness direction. As shown in FIG. 5(a), the frame opening 34a1 is formed in the center of the frame body 34a when viewed from the front. As shown in FIG. 5(b), the mesh body 34b is welded to one side (the left side in the figure) of the frame body 34a in the thickness direction (the opening direction of the frame opening 34a1).

[0054] As shown in FIG. 5(a), the frame 34a has a rectangular outer shape when viewed from the front. That is, the frame 34a has four sides. A grip portion 34a2 is formed on one of the four sides of the frame 34a. As shown in FIG. 5(b), the grip portion 34a2 protrudes to the other side in the thickness direction (the right side in the figure). The grip portion 34a2 is a portion that an operator grasps when attaching or detaching the filter 34. The direction in which the side on which the grip portion 34a2 is formed extends (the left-right direction on the paper in FIG. 5(a)) is defined as the width direction.

[0055] (Filter mounting structure) Next, the mounting structure of the filter 34 will be described with further reference to Figures 6 to 9. Note that the frame 34a and mesh 34b of the filter 34 are not shown in Figures 6 to 8. As shown in Figure 6(a) and other figures, the duct 31 has an end wall 31d provided at one end in the machine base longitudinal direction. An inner surface 31d1, which is the surface of the end wall 31d facing the duct interior space Sa, is capable of coming into contact with the surface of the filter 34 facing the suction port 32a. In other words, the inner surface 31d1 is the contact surface of the present invention.

[0056] The end wall 31d is perpendicular to the longitudinal direction of the machine base. As shown in FIG. 6(b), a circular opening 31d2 is formed in the center of the end wall 31d. A suction port 32a of the suction device 32 is disposed in the opening 31d2 of the end wall 31d. The opening direction of the suction port 32a intersects with the inner surface 31d1. In this embodiment, the opening direction of the suction port 32a coincides with the longitudinal direction of the machine base and is perpendicular to the inner surface 31d1.

[0057] As shown in Figures 6(a) and 6(b), a pair of guide members 35a, 35b are arranged at one end of the duct space Sa in the machine base longitudinal direction. As shown in Figure 6(b), the pair of guide members 35a, 35b extend along the height direction (a direction intersecting with the opening direction of the suction port 32a). As shown in Figure 6(a), the guide member 35a is arranged at a portion where the side wall 31c and the end wall 31d on one side in the perpendicular direction intersect. The guide member 35b is arranged at a portion where the side wall 31c and the end wall 31d on the other side in the perpendicular direction intersect.

[0058] The filter 34 is fitted between the pair of guide members 35a, 35b with its width direction (see FIG. 5(a)) aligned with the perpendicular direction. The filter 34 is fitted between the pair of guide members 35a, 35b with its gripping portion 34a2 facing the other side in the height direction. The filter 34 is fitted between the pair of guide members 35a, 35b from the other side toward the one side in the height direction. Here, as shown in FIG. 7, a portion of the inner surface of the bottom wall 31b of the duct 31 that faces the maintenance opening 31a1 is defined as a support surface 31b2. When the filter 34 is fitted between the pair of guide members 35a, 35b, as shown in FIG. 7, the support surface 31b2 of the bottom wall 31b of the duct 31 supports the filter 34 from below.

[0059] 7, the filter 34 is fitted between the pair of guide members 35a, 35b with the side of the frame 34a from which the gripping portion 34a2 protrudes (the other side in the thickness direction in FIG. 5(b)) facing away from the suction port 32a. That is, the side of the frame 34a to which the mesh body 34b is welded (one side in the thickness direction in FIG. 5(b)) faces the suction port 32a.

[0060] The filter 34 is biased against the inner surface 31d1 by the biasing members 39. The filter 34 is pressed against the inner surface 31d1 by the biasing force of the biasing members 39. In this embodiment, as shown in FIG. 6(b), a total of four biasing members 39 are provided, two on each of the guide members 35a and 35b. The number of biasing members 39 is not limited to this. In this embodiment, the biasing members 39 are wire clips. As shown in FIG. 7, it is preferable that the end 39a of each biasing member 39 (wire clip) on the other side in the height direction bends in a direction away from the inner surface 31d1. This allows the filter 34 to be smoothly fitted from the other side in the height direction to one side without getting caught on the biasing members 39 (wire clip). The end 39a of the biasing member 39 does not have to be bent in a direction away from the inner surface 31d1.

[0061] As shown in Figures 6(b) and 7, the maintenance opening 31a1 is formed in a portion facing the pair of guide members 35a, 35b in the height direction. Also, as shown in Figure 4, the maintenance opening 31a1 is formed between the suction opening 32a and the end yarn traveling space Sb that is closest to the suction opening 32a in the machine longitudinal direction (the leftmost one in Figure 4) among the multiple yarn traveling spaces Sb. The filter 34 can pass through the maintenance opening 31a1. In this embodiment, the duct 31 is formed with one maintenance opening 31a1. The duct 31 may be formed with multiple maintenance openings 31a1.

[0062] As shown in FIGS. 7 to 9, the upper wall 31a of the duct 31 is provided with a lid 36 that can close the maintenance opening 31a1. The lid 36 is attached to the upper wall 31a by a hinge 36a. In this embodiment, the hinge 36a is attached to one end of the lid 36 in the longitudinal direction of the machine base. The hinge 36a may be attached to the other end of the lid 36 in the longitudinal direction of the machine base, for example. As shown in FIG. 9, the hinges 36a are attached to both ends of the lid 36 in the perpendicular direction, for example. The number of hinges 36a is not limited to this. This allows the lid 36 to move between an open position (see FIG. 8(a)) that opens the maintenance opening 31a1 and a closed position (see FIG. 8(b)) that closes the maintenance opening 31a1.

[0063] As shown in FIG. 9 and other figures, the upper wall 31a of the duct 31 is provided with a fixing mechanism 37 that can be in a fixed state in which the lid 36 is fixed with the maintenance opening 31a1 closed, and an unlocked state in which the lid 36 is not locked. In this embodiment, the fixing mechanism 37 is composed of a fixing member 37a that can swing about an axis 37b extending along the height direction. The fixing mechanism 37 is in the fixed state when the fixing member 37a is in a position where it overlaps with the lid 36 as viewed in the height direction (see the solid line in FIG. 9). The fixing mechanism 37 is in the unlocked state when the fixing member 37a is in a position where it does not overlap with the lid 36 as viewed in the height direction (see the dashed line in FIG. 9). The configuration of the fixing mechanism 37 is not limited to this, and a fastening mechanism such as a snap lock, for example, can also be used.

[0064] As shown in FIG. 7 and other figures, an elastic member 38 is attached to the surface of the lid 36 that faces the duct space Sa when the lid 36 is in the closed position. The elastic member 38 is, for example, rubber or a spring. As shown in FIG. 8(b), the elastic member 38 is sandwiched between the lid 36 and the filter 34 when the lid 36 closes the maintenance opening 31a1. As a result, when the lid 36 closes the maintenance opening 31a1, the filter 34 is urged toward the support surface 31b2 by the restoring force of the elastic member 38. The filter 34 is pressed against the support surface 31b2 of the lower wall 31b.

[0065] (Features of the embodiment) As described above, the cooling device 14 of this embodiment is a cooling device 14 provided in the false twisting machine 1 that applies false twisting to a running yarn Y, and includes a duct 31 formed from a tubular member, a plurality of cooling units 33 arranged in a row along the extension direction of the duct 31 (longitudinal direction of the machine frame), a suction device 32 connected to one end of the duct 31 and capable of sucking air from the duct internal space Sa, and a filter 34 configured to allow air sucked into the suction port 32a of the suction device 32 to pass through. The duct internal space Sa is connected to a plurality of yarn traveling spaces Sb formed in each cooling unit 33 and through which the yarn Y travels, in a direction (height direction) perpendicular to the extension direction of the duct 31, and the filter 34 is removably provided in the duct internal space Sa between the suction port 32a and the end yarn traveling space Sb of the plurality of yarn traveling spaces Sb that is closest to the suction port 32a in the extension direction of the duct 31. The duct 31 has a maintenance opening 31a1 formed between the yarn traveling space Sb at the end and the suction port 32a, through which the filter 34 can pass, and is provided with a lid 36 that can close the maintenance opening 31a1.

[0066] With the above-described configuration, the filter 34 can be removed and cleaned after being taken out of the duct 31 through the maintenance port 31a1. This improves the workability of cleaning the filter 34 and shortens the time required for the cleaning work. Furthermore, after removing the filter 34, another filter 34 can be attached and the cooling device 14 can be operated. This improves the operating efficiency of the cooling device 14.

[0067] Furthermore, in the cooling device 14 of this embodiment, the filter 34 is attached so as to cover the suction port 32a. With this configuration, the intrusion of foreign matter into the suction device 32 can be more reliably prevented.

[0068] Furthermore, in the cooling device 14 of this embodiment, the lid 36 is attached to the duct 31 in a state where it can move between an open position where the maintenance opening 31a1 is open and a closed position where the maintenance opening 31a1 is closed. With this configuration, the lid 36 does not come off the duct 31, which makes it possible to prevent the lid 36 from being lost, for example.

[0069] Additionally, the cooling device 14 of this embodiment includes an elastic member 38 that is sandwiched between the lid 36 and the filter 34 when the lid 36 closes the maintenance opening 31a1. The duct 31 has a support surface 31b2 that can support the filter 34 on its inner surface facing the maintenance opening 31a1, and when the lid 36 closes the maintenance opening 31a1, the filter 34 is urged toward the support surface 31b2 by the restoring force of the elastic member 38. With this configuration, when the maintenance opening 31a1 is closed by the lid 36, the filter 34 is urged toward the support surface 31b2 by the restoring force of the elastic member 38 that is sandwiched between the lid 36 and the filter 34, and is pressed against the support surface 31b2. This allows the filter 34 to be positioned in the up-down direction (the direction in which the maintenance opening 31a1 faces the support surface 31b2).

[0070] Furthermore, the cooling device 14 of this embodiment includes a fixing mechanism 37 that can be in a fixed state in which the lid 36 is fixed with the maintenance opening 31a1 closed, and an unlocked state in which the lid 36 is not locked. With this configuration, by setting the fixing mechanism 37 to the locked state during operation, it is possible to prevent the lid 36 from opening unintentionally.

[0071] Furthermore, the cooling device 14 of this embodiment includes a pair of guide members 35a, 35b extending in a direction intersecting the opening direction of the suction port 32a, and the filter 34 is fitted between the pair of guide members 35a, 35b. With this configuration, the position of the filter 34 in the width direction can be determined.

[0072] Additionally, the cooling device 14 of the present embodiment includes an inner surface 31d1 that can come into contact with the surface of the filter 34 on the suction port 32a side, and a biasing member 39 that biases the filter 34 against the inner surface 31d1. With this configuration, the filter 34 can be fixed by pressing the filter 34 against the inner surface 31d1 with the biasing member 39.

[0073] Furthermore, in the cooling device 14 of this embodiment, the filter 34 includes a metal frame 34a that defines the frame opening 34a1 and a metal mesh 34b welded to one side of the frame 34a in the direction of the frame opening 34a1. The filter 34 is attached so that the side of the frame 34a to which the mesh 34b is welded (one side in the thickness direction) coincides with the suction port 32a. If foreign matter adheres to the portion of the mesh 34b welded to the frame 34a, it is difficult to remove the foreign matter from the mesh 34b. With this configuration, the filter 34 is attached so that the side of the frame 34a to which the mesh 34b is welded coincides with the suction port 32a. This prevents foreign matter carried by the airflow toward the suction port 32a (airflow from the other side to one side in the thickness direction) from adhering to the portion of the mesh 34b welded to the frame 34a. This facilitates cleaning of the filter 34.

[0074] Although the embodiments of the present invention have been described above with reference to the drawings, the specific configurations should not be considered to be limited to these embodiments. The scope of the present invention is defined by the claims rather than the above description of the embodiments, and further includes all modifications within the meaning and scope of the claims.

[0075] In the above-described embodiment, the lid 36 is attached to the duct 31 by the hinge 36a, but this is not limiting. For example, the lid 36 may be attached to the duct 31 in a state where it can slide within a plane parallel to the upper wall 31a of the duct 31. In this case, the lid 36 can slide between an open position where the maintenance opening 31a1 is opened and a closed position where the maintenance opening 31a1 is closed.

[0076] Furthermore, the lid 36 does not have to be attached to the duct 31. That is, for example, the lid 136 according to a first modified example shown in FIGS. 10(a) and 10(b) is formed integrally with the filter 134. As shown in FIG. 10(a), the maintenance opening 31a1 is open when the filter 134 is not attached. As shown in FIG. 10(b), the maintenance opening 31a1 is closed by the lid 136 when the filter 134 is attached. In this case, it is preferable that the lid 136 be provided with a grip 136a that can be gripped by an operator. As shown in FIG. 10(b), the grip 136a is provided on a portion of the lid 136 that is exposed when the maintenance opening 31a1 is closed by the lid 136. In this modified example, the maintenance opening 31a1 can be closed simply by attaching the filter 134. Furthermore, loss of the lid 136 can be prevented.

[0077] In the above embodiment, the duct 31 extends in the horizontal direction, but this is not limiting. The duct 31 may extend in a direction intersecting the horizontal direction.

[0078] Furthermore, in the above embodiment, the maintenance opening 31a1 is formed in the upper wall 31a of the duct 31, but this is not limiting. The maintenance opening 31a1 may also be formed in the lower wall 31b or the side wall 31c of the duct 31.

[0079] Furthermore, in the above embodiment, the elastic member 38 that is sandwiched between the lid 36 and the filter 34 when the lid 36 closes the maintenance opening 31a1 is attached to the lid 36, but this is not limiting. The elastic member 38 may also be attached to the filter 34. The elastic member 38 may also be omitted.

[0080] Furthermore, in the above embodiment, the fixing mechanism 37 for fixing the lid 36 is provided, but the fixing mechanism 37 may be omitted.

[0081] Furthermore, in the above embodiment, the pair of guide members 35a, 35b that guide the filter 34 is provided, but the pair of guide members 35a, 35b may be omitted.

[0082] Additionally, in the above-described embodiment, the biasing member 39 that biases the filter 34 against the inner surface 31d1 is a wire clip, but this is not limiting. Here, FIGS. 11(a) and (b) show a biasing member 239 according to a second modified example. As shown in FIG. 11(b), the biasing member 239 is a leaf spring. The biasing member 239 is curved so as to bulge toward one side in the machine base longitudinal direction when viewed from the perpendicular direction. In other words, an end 239a of the biasing member 239 on the other side in the height direction is warped in a direction away from the inner surface 31d1. This allows the filter 34 to be fitted smoothly from the other side in the height direction to one side without getting caught on the biasing member 239 (leaf spring).

[0083] 11(a), the pair of guide members 235a, 235b are formed with opposing portions 235a1, 235b1 that face the widthwise (orthogonal) ends of the filter 34 fitted between the pair of guide members 235a, 235b. The biasing member 239 is attached to the surfaces of the opposing portions 235a1, 235b1 that face the filter 34.

[0084] The biasing members 39 and 239 may be omitted.

[0085] In the above embodiment, the filter 34 is attached so that the side of the frame 34a to which the mesh body 34b is welded faces the suction port 32a, but this is not limiting. That is, the filter 34 may be attached so that the side of the frame 34a to which the mesh body 34b is welded faces the opposite side from the suction port 32a. The mesh body 34b does not have to be welded to the frame 34a. The mesh body 34b may be attached to the frame 34a with a fixing member such as a screw. The frame 34a and the mesh body 34b do not have to be made of metal. The frame 34a and the mesh body 34b may be made of resin or the like. The frame 34a and the mesh body 34b may be made of different materials.

[0086] Additionally, in the above embodiment, the suction device 32 is disposed at one end of the duct 31 with the opening direction of the suction port 32a aligned with the extension direction of the duct 31 (longitudinal direction of the machine base), but this is not limiting. For example, the suction device 32 may be disposed at one end of the duct 31 with the opening direction of the suction port 32a aligned with a direction (e.g., height direction) perpendicular to the extension direction of the duct 31.

[0087] In the above embodiment, the entire duct 31 extends linearly along the longitudinal direction of the machine base, but this is not limiting. That is, the duct 31 may be disposed at a right angle or may include a curved portion. In this case, the multiple cooling units 33 may be attached to the curved portion of the duct 31 and arranged side by side along the extension direction of the curved duct 31.

[0088] Furthermore, in the above embodiment, the suction device 32 sucks air from the duct space Sa, but the suction device 32 may be any device that sucks gas from the duct space Sa. [Explanation of symbols]

[0089] 1 False twisting machine 14 Cooling device 31 Duct 31a Upper wall 31a1 Maintenance opening (duct opening) 31b2 Support surface 31d1 Inner surface (contact surface) 32 Suction device 32a Suction port 33 Cooling unit 34 Filters 34a frame 34a1 Frame opening 34b net body 35a, 35b Guide members 36 Lid 37 Fixing mechanism 39 biasing member 38 Elastic member 235a, 235b guide members 239 Biasing member Sa: Duct space Sb Yarn running space

Claims

1. A cooling device provided in a false twisting machine that applies false twisting to a running yarn, a duct formed of a tubular member; a plurality of cooling units arranged side by side along the extension direction of the duct; a suction device connected to one end of the duct and capable of suctioning gas in a space within the duct; a filter configured to allow gas sucked into the suction port of the suction device to pass through, the duct space is connected to a plurality of yarn traveling spaces formed in each of the cooling units and in which the yarn travels, in a direction perpendicular to the extending direction, the filter is detachably provided in the duct interior space between the suction port and a terminal yarn traveling space among the plurality of yarn traveling spaces that is closest to the suction port in the extension direction, the duct has a duct opening formed between the end yarn traveling space and the suction port through which the filter can pass, A cooling device comprising a lid capable of closing the duct opening.

2. The cooling device according to claim 1 , wherein the filter is attached so as to cover the suction port.

3. The cooling device according to claim 1 or 2, wherein the cover is attached to the duct in a manner that the cover can move between an open position that opens the duct opening and a closed position that closes the duct opening.

4. an elastic member that is sandwiched between the cover and the filter when the cover closes the duct opening, the duct has an inner surface having a support surface that is located opposite the duct opening and that is capable of supporting the filter; 4. The cooling device according to claim 1, wherein the filter is urged toward the support surface by the restoring force of the elastic member when the lid closes the duct opening.

5. The cooling device according to claim 1 or 2, wherein the lid is integral with the filter.

6. The cooling device according to any one of claims 1 to 5, further comprising a fixing mechanism that can take a fixed state in which the lid is fixed with the duct opening closed, and an unfixed state in which the lid is not fixed.

7. a pair of guide members extending in a direction intersecting with the opening direction of the suction port; 7. The cooling device according to claim 1, wherein the filter is fitted between the pair of guide members.

8. a contact surface that can come into contact with the surface of the filter on the suction port side; The cooling device according to any one of claims 1 to 7, further comprising: a biasing member that biases the filter against the contact surface.

9. The filter is a metal frame body that forms a frame opening; a metal mesh body welded to one side of the frame body in the opening direction of the frame opening, The cooling device according to any one of claims 1 to 8, wherein the filter is attached so that the one side coincides with the suction port side.

Images