Fabric stretching mechanism, fabric stretching device and shaping machine

Abstract

The present invention relates to the field of fabric processing technology, and more specifically to a fabric stretching mechanism, a fabric stretching device and a shaping machine. The fabric stretching mechanism comprises: a support shaft, a first pressing sleeve and a second pressing sleeve movably mounted on its outer periphery, and the first pressing sleeve and the second pressing sleeve are connected to a pressing sleeve driving device that drives the first pressing sleeve and the second pressing sleeve to move closer to / away from each other on the support shaft; a rotating shaft, which is spaced apart and is connected to a rotating shaft driving device that provides rotational force thereto, and the space between the rotating shaft and the support shaft forms a material feeding space for the fabric to move; and the rotating shaft is linked to a material pressing assembly that rotates with the rotating shaft and moves closer to or away from the support shaft; the material pressing assembly is adapted to be arranged in the first pressing sleeve moving area and the second pressing sleeve moving area. A preferred fabric stretching mechanism of the present invention can stretch and extend the fabric to improve the shaping quality of the fabric.

Description

Technical Field

[0001] The present invention relates to the technical field of fabric processing, and more particularly to a fabric stretching mechanism, a fabric stretching device and a setting machine. Background Art

[0002] Fabric heat setting is the process of maintaining a specific shape and structure in a fabric's fibers or yarns through heating and cooling. Heat setting can alter the fabric's appearance, feel, and performance, imparting specific characteristics and functions.

[0003] After the fabric is produced, it is usually compressed for easy storage and transportation, or it is easily squeezed by external forces during transportation. When the fabric is under pressure, the weaving structure of the fabric will move and rearrange, causing the shape of the fabric to change, and the fabric is prone to wrinkles, curling, and shrinking. In particular, considering that the fabric is generally long and is often rolled up in the extension direction, the two ends of the overall barreled fabric after rolling are formed by the two side edges of the fabric. At this time, when the rolled fabric is compressed or squeezed, both sides of the fabric are directly compressed areas, causing the two sides of the fabric to be easily compressed and wrinkled, and the fabric is prone to curling in the width direction.

[0004] During heat setting, the rolled fabric needs to be unfolded and oriented to be transported to a heat setting device for heat setting. However, after unfolding, the rolled fabric can be severely wrinkled, curled, and curled. Directly transporting the rolled fabric to the heat setting device for heat setting can reduce the quality of the fabric. Therefore, stretching the fabric is necessary to improve its quality and simultaneously stretch it to ensure that its dimensions (particularly width) meet the heat setting requirements. Summary of the Invention

[0005] One of the purposes of the present invention is to address the deficiencies of the prior art and provide a fabric stretching mechanism that can stretch and extend fabric to improve the shaping quality of the fabric.

[0006] A second object of the present invention is to provide a fabric stretching device having the above-mentioned fabric stretching mechanism.

[0007] A third object of the present invention is to provide a setting machine having the above-mentioned fabric stretching mechanism or the above-mentioned fabric stretching device.

[0008] The technical solutions of the present invention are as follows:

[0009] A fabric stretching mechanism, comprising:

[0010] A support shaft, the outer periphery of which is movably covered with a first pressing sleeve and a second pressing sleeve, and the first pressing sleeve and the second pressing sleeve are connected to: a pressing sleeve driving device for driving the first pressing sleeve and the second pressing sleeve to move closer to or away from each other on the support shaft;

[0011] A twisting shaft is placed above the support shaft at an interval and is connected to a twisting shaft driving device that provides rotational force to the twisting shaft. The interval between the twisting shaft and the support shaft forms a material feeding space for the fabric to travel.

[0012] Furthermore, the twisting shaft is linked with: a material pressing component which rotates with the twisting shaft and moves closer to or away from the support shaft;

[0013] The pressing assembly is adapted to be arranged in the first pressing sleeve moving area and the second pressing sleeve moving area so that:

[0014] When the pressing assembly is close to the supporting shaft, there is always a part of the pressing assembly that forms a clamping structure for the fabric together with the movable first pressing sleeve, and there is always another part of the pressing assembly that forms a clamping structure for the fabric together with the movable second pressing sleeve.

[0015] In the above scheme, the fabric is placed in the material feeding space between the twisting shaft and the support shaft, and the twisting shaft is driven to drive the pressing assembly to move close to the support shaft: the pressing assembly and the first pressing sleeve together form a clamping structure for the fabric, and the pressing assembly and the second pressing sleeve together form a clamping structure for the fabric, so that the fabric can be clamped; at the same time, the pressing sleeve driving device is used to drive the first pressing sleeve and the second pressing sleeve away from each other on the support shaft, so that the first pressing sleeve and the second pressing sleeve pressing the fabric can be moved to both sides respectively, and the fabric can be pushed horizontally in the moving direction of the pressing sleeve to achieve stretching and extension of the fabric, so as to improve the quality of the subsequent shaping of the fabric.

[0016] In particular, for example, Figure 4 As shown, the length direction of the rolled fabric after unfolding can be used as the travel direction to move the fabric from one side of the support shaft through the material feeding space and then to the other side of the support shaft. At this time, the movement and pushing direction of the first and second pressing sleeves conform to the width direction of the fabric, which can stretch the fabric in the width direction, solving the problem of the rolled fabric easily curling in the width direction and better smoothing the fabric wrinkles and curling. The placement characteristics of the fabric are adapted to achieve targeted stretching and extension of the unfolded fabric to improve the fabric's shaping quality.

[0017] As a further preferred solution, the sleeve pressing drive device includes:

[0018] a first lead screw, adapted to fit the position of the first pressing sleeve and inserted into the support shaft; a first connecting sleeve is threadedly connected to the first lead screw; the first connecting sleeve is protrudingly formed with: a first sliding groove passing through the support shaft and a first connecting portion fixedly connected to the first pressing sleeve;

[0019] a second lead screw, adapted to fit the position of the second pressing sleeve and inserted into the support shaft; a second connecting sleeve is threadedly connected to the second lead screw; the second connecting sleeve is protrudingly formed with: a second sliding groove passing through the support shaft and a second connecting portion fixedly connected to the second pressing sleeve;

[0020] The first lead screw and the second lead screw are connected in transmission connection via a transmission rod, and an outer end of the first lead screw or an outer end of the second lead screw is connected in transmission connection to a lead screw rotating motor that provides rotational force to the lead screw.

[0021] Alternatively, the first screw and the second screw are coaxially and integrally formed into a screw member, and the screw member is connected to a screw rotating motor that provides rotational force to the screw member.

[0022] As a further preferred embodiment, the pressing assembly includes:

[0023] A press rod adapted to be provided in the first pressing sleeve moving area and the second pressing sleeve moving area, comprising a portion for forming a fabric clamping structure together with the first pressing sleeve, and a portion for forming a fabric clamping structure together with the second pressing sleeve;

[0024] A plurality of mounting parts, each of which is connected to the rotating shaft at one end and to the pressing rod at the other end, so that the rotating rotating shaft can drive the pressing rod to approach or move away from the supporting shaft through the mounting parts.

[0025] As a further preferred solution, the press rod comprises: a first rod and a second rod spaced apart in the extending direction of the support shaft, the first rod and the second rod being linked to the rotating shaft via a plurality of the mounting members;

[0026] The first rod is adapted to be arranged in the moving area of ​​the first pressing sleeve to have a portion for forming a fabric clamping structure together with the first pressing sleeve;

[0027] The second rod is adapted to be arranged in the moving area of ​​the second pressing sleeve so as to have a portion for forming a fabric clamping structure together with the second pressing sleeve.

[0028] As a further preferred solution, the support shaft is rotatably arranged, and the support shaft is transmission-connected to a support shaft rotating motor that provides rotational force thereto.

[0029] As a further preferred embodiment, the pressing rod includes: a pressing roller rotatably arranged to contact the cloth;

[0030] Moreover, the rotation direction of the nip roller is matched with the rotation direction of the support shaft, so that when the support shaft is connected to the nip roller, the rotating support shaft can drive the nip roller to rotate synchronously.

[0031] As a further preferred solution, the outer periphery of the first rod is rotatably fitted with: a first nip roller that can move along the extending direction of the first rod;

[0032] The outer periphery of the second rod is rotatably covered with: a second nip roller that can move along the extending direction of the second rod;

[0033] Therefore, when the fabric is stretched, the first pressing roller can move along with the movement of the first pressing sleeve, and the second pressing roller can move along with the movement of the second pressing sleeve.

[0034] As a further preferred solution, both ends of the first nip roller are provided with: the mounting member for connecting the first rod to the rotating shaft in a linkage manner;

[0035] Furthermore, a reset member is provided between the end of the first nip roller and one of the mounting members adjacent to the end: a reset member that drives the first nip roller to reset;

[0036] and / or;

[0037] Both ends of the second nip roller are provided with: a mounting member for connecting the second rod to the rotating shaft in a linkage manner;

[0038] Furthermore, a reset member for driving the moving second nip roller to reset is provided between the end of the second nip roller and one of the mounting members adjacent to the end.

[0039] As a further preferred solution, one end of the mounting member is rotatably connected to the rotating shaft;

[0040] Furthermore, a shaft sleeve is fixedly connected to the rotating shaft so as to fit the mounting piece, a torsion spring is connected between the shaft sleeve and the mounting piece, one end of the torsion spring is fixedly connected to the shaft sleeve, and the other end is fixedly connected to the mounting piece.

[0041] A fabric stretching device comprising two fabric stretching mechanisms as described in any one of the above schemes;

[0042] The two fabric stretching mechanisms are arranged laterally at intervals, and the material feeding space in one fabric stretching mechanism is laterally aligned with the material feeding space in the other fabric stretching mechanism, so that the fabric can pass through the two fabric stretching mechanisms in sequence to achieve multiple stretching.

[0043] As a further preferred solution, the support shaft in one fabric stretching mechanism and the support shaft in another fabric stretching mechanism are both transmission-connected to a support shaft rotating motor.

[0044] As a further preferred solution, one fabric stretching mechanism and another fabric stretching mechanism are arranged to operate alternately, so that one fabric stretching mechanism and another fabric stretching mechanism can alternately perform stretching operations on the fabric.

[0045] As a further preferred embodiment, the following components are spaced apart below the support shaft of a fabric stretching mechanism:

[0046] A rotating shaft, the rotating shaft being in driving connection with a rotating shaft driving device for providing a rotating force thereto, and the rotating shaft being linked to: a pressing assembly which rotates with the rotating shaft and approaches or moves away from a support shaft in the fabric stretching mechanism;

[0047] and / or;

[0048] The support shaft of another fabric stretching mechanism is provided with:

[0049] A twisting shaft is connected to a twisting shaft driving device for providing rotational force thereto, and the twisting shaft is linked to a material pressing component which rotates with the twisting shaft and approaches or moves away from the support shaft in the other fabric stretching mechanism.

[0050] A setting machine comprises a fabric stretching mechanism as described in any one of the above schemes, or comprises a fabric stretching device as described in any one of the above schemes.

[0051] The main beneficial effects of the above technical solution are:

[0052] The device can stretch and extend fabrics to improve their shaping quality. In particular, it is suitable for stretching and extending fabrics after they have been rolled up for storage or transportation. This targeted stretching and extending process can eliminate fabric defects, smooth the fabric, and improve their shaping quality. Defects include curling, wrinkles, and hemming.

[0053] Further or more detailed beneficial effects will be described in conjunction with specific examples in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The present invention will be further described below with reference to the accompanying drawings:

[0055] Figure 1 This is a schematic diagram of the overall assembly of the fabric stretching mechanism.

[0056] Figure 2 This is a schematic diagram of the assembly structure of the sleeve drive device.

[0057] Figure 3 Schematic diagram of the assembly structure of the pressing component.

[0058] Figure 4 Schematic diagram of the fabric traveling and clamping structure.

[0059] Figure 5 The figure is a structural schematic diagram of a fabric stretching device.

[0060] Figure 6 Schematic diagram of the structure of another fabric stretching device.

[0061] Figure 7 This is a schematic diagram of the reset component installation structure.

[0062] As shown in the figure: support shaft-1, first sliding groove-101, second sliding groove-102, support shaft transmission gear-103, first pressing sleeve-1a, second pressing sleeve-1b, pressing sleeve driving device-2, first screw-201, first connecting sleeve-202, first connecting part-2021, second screw-203, second connecting sleeve-204, second connecting part-2041, transmission rod-205, screw rotation motor-206, screw driving gear-2061, drive rod-207, drive rod connecting gear-207 1. Twist shaft-3, sleeve-301, twist shaft transmission gear-302, twist shaft drive device-4, cylinder-401, push block-402, press assembly-5, press rod-501, first rod-501a, second rod-501b, press roller-501c, first press roller-501c1, second press roller-501c2, mounting part-502, reset part-503, support shaft rotation motor-6, first drive gear-601, second drive gear-602, torsion spring-7, fabric-a. DETAILED DESCRIPTION

[0063] The present invention is specifically described below with reference to the embodiments:

[0064] Example 1:

[0065] A fabric stretching mechanism, such as the attached Figure 1 To the attached Figure 4As shown, it includes a laterally extending support shaft 1, and a first pressing sleeve 1a and a second pressing sleeve 1b are movably mounted on the outer periphery of the support shaft 1, and the first pressing sleeve 1a and the second pressing sleeve 1b are connected to a pressing sleeve driving device 2 for driving the first pressing sleeve 1a and the second pressing sleeve 1b to move closer to / away from each other on the support shaft 1.

[0066] At the same time, a twisting shaft 3 is arranged at intervals above the support shaft 1, which is preferably extended horizontally, and the extension direction of the twisting shaft 3 is preferably in line with (preferably parallel, considering manufacturing and installation limitations, angular deviation is allowed) the extension direction of the support shaft 1.

[0067] In this embodiment, the rotating shaft 3 and the support shaft 1 are both mounted on a support bracket, and one end of the rotating shaft 3 is drivingly connected to a rotating shaft drive device 4 that provides rotational force. The gap between the rotating shaft 3 and the support shaft 1 forms a feed space for the fabric to travel. More specifically, the gap between the rotating shaft 3 and the support shaft 1 forms a feed space for the fabric to travel from one side of the support shaft 1 to the other. The specific size of this gap can be adjusted to suit the fabric size.

[0068] At the same time, the twisting shaft 3 is linked to a pressing assembly 5 that rotates with the twisting shaft 3 and moves closer to or further away from the support shaft 1. The pressing assembly 5 is adapted to be arranged in the moving area of ​​the first pressing sleeve 1a and the moving area of ​​the second pressing sleeve 1b, so that when the pressing assembly 5 is close to the support shaft 1, a portion of the pressing assembly 5 always exists to form a clamping structure for the fabric together with the movable first pressing sleeve 1a, and another portion of the pressing assembly 5 always exists to form a clamping structure for the fabric together with the movable second pressing sleeve 1b. Symmetrical clamping is preferred.

[0069] In the above scheme, the fabric is placed in the material feeding space between the twisting shaft 3 and the support shaft 1, and the twisting shaft 3 is driven to rotate to drive the pressing assembly 5 to move close to the support shaft 1 until: part of the pressing assembly 5 (for example, the first rod 501a below) and the first pressing sleeve 1a together form a clamping structure for the fabric, and at the same time, another part of the pressing assembly 5 (for example, the second rod 501b below) and the second pressing sleeve 1b together form a clamping structure for the fabric, so that the fabric can be clamped; at the same time, the pressing sleeve driving device 2 drives the first pressing sleeve 1a and the second pressing sleeve 1b to move away from each other on the support shaft 1, so that the first pressing sleeve 1a and the second pressing sleeve 1b pressing the fabric can be moved to both sides respectively, and the fabric can be pushed horizontally in the moving direction of the pressing sleeve to achieve stretching and extension of the fabric, so as to improve the quality of the subsequent shaping of the fabric.

[0070] In particular, for example, Figure 4As shown, the length direction of the rolled fabric after unfolding can be used as the travel direction to move the fabric from one side of the support shaft 1 through the material feeding space and then to the other side of the support shaft 1. At this time, the movement and pushing direction of the first pressing sleeve 1a and the second pressing sleeve 1b conform to the width direction of the fabric, which can stretch the fabric in the width direction, solve the problem of the fabric curling in the width direction after being rolled up, and better smooth the wrinkles and curling of the fabric. The placement characteristics of the fabric are adapted to achieve targeted stretching and extension of the unfolded fabric to improve the fabric's shaping quality.

[0071] After stretching, the twisting shaft 3 needs to be driven to rotate to drive the pressing assembly 5 away from the support shaft 1, moving the unstretched part of the fabric into the feeding space for stretching. At the same time, the pressing sleeve driving device 2 can drive the first pressing sleeve 1a and the second pressing sleeve 1b to move closer on the support shaft 1 without stretching the fabric, preparing for the next stretching of the fabric. After preparation is completed, the above-mentioned stretching action of the fabric can be repeated.

[0072] Furthermore, in order to avoid interference with the movement of the fabric, in this embodiment, as shown in the attached Figure 1 and attached Figure 2 As shown, the sleeve pressing drive device 2 includes a first lead screw 201 , a first connecting sleeve 202 , a second lead screw 203 , and a second connecting sleeve 204 disposed in the support shaft 1 .

[0073] Specifically, the first screw 201 is inserted into the support shaft 1 to fit the position of the first pressing sleeve 1a, and the first connecting sleeve 202 is screwed on the first screw 201. The first connecting sleeve 202 is protrudingly formed with a first sliding groove 101 that passes through the support shaft 1 and is fixed to the first pressing sleeve 1a. The first connecting portion 2021 is fixed to the first pressing sleeve 1a.

[0074] At the same time, the second screw 203 is inserted into the support shaft 1 to fit the position of the second pressing sleeve 1b. The second connecting sleeve 204 is screwed on the second screw 203. The second connecting sleeve 204 is protrudingly formed with a second sliding groove 102 that passes through the support shaft 1 and is fixed to the second pressing sleeve 1b. The second connecting portion 2041 is fixed to the second pressing sleeve 1b.

[0075] In one driving mode, the first screw 201 and the second screw 203 can be respectively connected to a rotating motor that provides rotational force to the screw. The first screw 201 and the second screw 203 are synchronously driven to rotate by the two rotating motors to drive the first pressing sleeve 1a and the second pressing sleeve 1b to approach / move away from each other on the support shaft 1.

[0076] Of course, the first lead screw 201 and the second lead screw 203 can also be coaxially and integrally formed into a lead screw member, and the lead screw member is connected to a lead screw rotating motor 206 that provides rotational force to the lead screw member.

[0077] Or, in another form, as in the attached Figure 1 , Attachment Figure 2 As shown, the first lead screw 201 and the second lead screw 203 are connected via a transmission rod 205, and the outer end of the first lead screw 201 or the outer end of the second lead screw 203 is connected to a lead screw rotating motor 206 that provides rotational force to the lead screw.

[0078] Specifically, in this embodiment, the outer end of the first lead screw 201 is transmission-connected to a drive rod 207, and a drive rod connecting gear 2071 is fixedly connected to the outer periphery of the drive rod 207. The drive rod connecting gear 2071 is meshedly connected with a lead screw driving gear 2061 fixedly connected to the rotation output shaft of the lead screw rotating motor 206, so that the lead screw rotating motor 206 can drive the first lead screw 201 and the second lead screw 203 to rotate synchronously. At this time, the thread rotation direction of the first lead screw 201 and the second lead screw 203 matches the movement setting of the pressing sleeve, so that when the lead screw driving gear 2061 drives the drive rod 207 to rotate in the forward direction, the first pressing sleeve 1a and the second pressing sleeve 1b are closer to each other on the support shaft 1; when the drive rod 207 is driven to rotate in the reverse direction, the first pressing sleeve 1a and the second pressing sleeve 1b are separated from each other on the support shaft 1.

[0079] Furthermore, the rotating shaft driving device 4 in this embodiment can be a rotating motor that can directly drive the rotating shaft 3 to rotate.

[0080] Or, as attached Figure 1 As shown, the rotating shaft driving device 4 in this embodiment includes a cylinder 401, a push block 402 is fixedly connected to the piston rod of the cylinder 401, and a rotating shaft transmission gear 302 is fixedly connected to the outer periphery of the rotating shaft 3, and the push block 402 is meshedly connected with the rotating shaft transmission gear 302, so that when the cylinder 401 drives the piston rod to move back and forth in a straight line, it can drive the rotating shaft 3 to rotate forward / reverse.

[0081] Furthermore, as attached Figure 1 , Attachment Figure 3 As shown, the pressing assembly 5 in this embodiment includes a pressing rod 501 and a mounting member 502 .

[0082] Specifically, the pressing rod 501 is adapted to the moving area of ​​the first pressing sleeve 1a and the moving area of ​​the second pressing sleeve 1b, and is provided with a part for forming a fabric clamping structure together with the first pressing sleeve 1a, and a part for forming a fabric clamping structure together with the second pressing sleeve 1b.

[0083] At the same time, the pressing rod 501 is linked to the rotating shaft 3 through several mounting parts 502. Each mounting part 502 is connected to the rotating shaft 3 at one end and to the pressing rod 501 at the other end, so that the rotating rotating shaft 3 can drive the pressing rod 501 closer to or away from the support shaft 1 through the mounting part 502.

[0084] The pressing rod 501 may be a long rod structure extending laterally in accordance with the extension direction of the support shaft 1 .

[0085] However, considering that the wrinkles and curling degrees on both sides of the fabric are generally different or the weaving structure of the fabric has different thicknesses on both sides, there will be differences in the thickness of the two sides of the fabric. A single long rod structure cannot adapt to the thickness of the two sides of the fabric well to clamp and stretch the fabric.

[0086] Based on this, as attached Figure 1 As shown, the press rod 501 in this embodiment includes: a first rod 501a extending transversely in accordance with the extension direction of the support shaft 1, and a second rod 501b extending transversely in accordance with the extension direction of the support shaft 1, which are spaced apart. The first rod 501a is adapted to be arranged in the moving area of ​​the first pressing sleeve 1a, and has a portion for forming a fabric clamping structure together with the first pressing sleeve 1a; as shown in the attached figure, Figure 1 As shown, the first rod 501a is linked to the rotating shaft 3 through a plurality of mounting members 502, so that when the rotating shaft 3 rotates, the first rod 501a can be synchronously driven to move closer to or away from the first pressing sleeve 1a. The second rod 501b is adapted to be arranged in the moving area of ​​the second pressing sleeve 1b, and has a portion for forming a fabric clamping structure together with the second pressing sleeve 1b; as shown in the attached Figure 1 As shown, the second rod 501b is linked to the rotating shaft 3 through a plurality of mounting members 502, so that when the rotating shaft 3 rotates, the second rod 501b can be synchronously driven to move closer to or away from the second pressing sleeve 1b.

[0087] In this way, the first rod 501a and the first pressing sleeve 1a, and the second rod 501b and the second pressing sleeve 1b can form two independent but synchronously operating stretching structures for the fabric, which can more specifically clamp and stretch the two sides of the fabric with different thicknesses; so as to have a targeted stretching and extension effect on the entire fabric, thereby better improving the quality of the subsequent shaping of the fabric.

[0088] At the same time, considering that there are still areas of different thicknesses near the single-side edge of the fabric, when the pressing sleeve is not moved, the thicker part of the fabric will be piled up in the area between the pressing rod 501 and the support shaft 1, which will not affect the clamping of the pressing rod 501 and the pressing sleeve. However, when the pressing sleeve moves, since the position of the pressing rod 501 cannot be adjusted, the spacing area between the pressing sleeve and the pressing rod 501 is fixed. When this spacing area cannot accommodate the part of the fabric that is difficult to flatten, the moving pressing sleeve is likely to cause pulling and damage to the fabric. In particular, this situation is more likely to occur when the fabric is stretched while moving.

[0089] Based on this, as attached Figure 1 and attached Figure 3 As shown, in this embodiment, one end of the mounting member 502 is rotatably connected to the rotating shaft 3; and, a shaft sleeve 301 is fixedly connected to the rotating shaft 3 to adapt to the mounting member 502, and a torsion spring 7 is also mounted on the rotating shaft 3, and the torsion spring 7 is placed between the shaft sleeve 301 and the mounting member 502, and one end of the torsion spring 7 is fixedly connected to the shaft sleeve 301, and the other end is fixedly connected to the mounting member 502.

[0090] In this way, when the rotating shaft 3 rotates, the pressing assembly 5 is driven to rotate along with the rotating shaft 3 and approach the pressing sleeves 1a and 1b. The gap between the pressing assembly and the pressing sleeves is adaptive to the thickness of the fabric through the torsion spring 7. That is, when the portion of the fabric with excessive thickness interferes with the pressing sleeve, the interference force is transmitted to the torsion spring 7 through the pressing assembly 5, driving the pressing assembly 5 to rotate and lift relative to the rotating shaft 3, thereby increasing the gap between the pressing sleeve and the pressing rod 501 to accommodate the portion of the fabric with excessive thickness, thereby accommodating the portion that is difficult to flatten, and realizing automatic elastic adjustment of the clamping of the fabric according to the thickness distribution of the fabric, thereby reducing the possibility of over-pressure damage to the fabric caused by the moving pressing sleeve, and improving the stability of the fabric stretching and expansion.

[0091] The fabric stretching mechanism can stretch a moving fabric, but this requires time for the first and second pressing sleeves 1a, 1b to return to the stretching starting point of the support shaft 1, depending on the fabric's travel speed and stretching time. Alternatively, the mechanism can stretch a statically placed fabric, achieving a cycle of fabric stretching and fabric movement. In this case, the fabric's travel time is the time it takes for the first and second pressing sleeves 1a, 1b to return to the stretching starting point of the support shaft 1. The stretching starting point depends on the fabric's width.

[0092] In order to facilitate the movement of the fabric between the support shaft 1 and the twisting shaft 3, and avoid adding an additional traction structure for the fabric to interfere with the stretching action of the fabric, as shown in the attached Figure 1 As shown, in this embodiment, the support shaft 1 is rotatably arranged, for example, rotatably mounted on a support frame, and the support shaft 1 is drivingly connected to a support shaft rotating motor 6 that provides rotational force thereto. In this case, the support shaft 1 serves as a power mechanism for driving the fabric to advance, and by controlling the rotational speed of the first lead screw 201 relative to the support shaft 1 and the rotational speed of the second lead screw 203 relative to the support shaft 1, the movement of the first pressing sleeve 1a and the second pressing sleeve 1b can be driven and adjusted, thereby achieving synchronous operation of fabric advancement and stretching.

[0093] Specifically, as attached Figure 1 As shown, a support shaft transmission gear 103 is fixedly connected to the outer periphery of the support shaft 1 , and a first driving gear 601 is fixedly connected to the output shaft of the support shaft rotation motor 6 . The first driving gear 601 is meshed with the support shaft transmission gear 103 .

[0094] At the same time, in order to meet the need of stretching the moving fabric, the pressing rod 501 includes a pressing roller 501c that is rotatably set and used to connect with the fabric; and the rotation direction of the pressing roller 501c is matched with the rotation direction of the support shaft 1, so that when the support shaft 1 is connected to the pressing roller 501c, the rotating support shaft 1 can drive the pressing roller 501c to rotate synchronously.

[0095] As attached Figure 1 As shown, when the first rod 501a and the second rod 501b are set.

[0096] The first rod 501a includes a first pressing roller 501c1 that is rotatably arranged and used to connect with the cloth; and the rotation direction of the first pressing roller 501c1 is matched with the rotation direction of the support shaft 1, so that when the support shaft 1 is connected with the first pressing roller 501c1, the rotating support shaft 1 can drive the first pressing roller 501c1 to rotate synchronously.

[0097] The second rod 501b includes a second pressing roller 501c2 that is rotatably arranged and used to connect with the cloth; and the rotation direction of the second pressing roller 501c2 is matched with the rotation direction of the support shaft 1, so that when the support shaft 1 is connected with the second pressing roller 501c2, the rotating support shaft 1 can drive the second pressing roller 501c2 to rotate synchronously.

[0098] Or, as attached Figure 7 As shown, the outer periphery of the first rod 501a is rotatably fitted with a first pressing roller 501c1 that can move along the extension direction of the first rod 501a; the outer periphery of the second rod 501b is rotatably fitted with a second pressing roller 501c2 that can move along the extension direction of the second rod 501b.

[0099] In this way, when the fabric is stretched, the first nip roller 501c1 and the first pressing sleeve 1a jointly clamp a portion of the fabric, and the fabric is stretched by driving the first pressing sleeve 1a to move. Under the action of the first pressing sleeve 1a, the first nip roller 501c1 can also move with the first pressing sleeve 1a, reducing the possibility that the fabric will be piled up on the surface of the first nip roller 501c1 under the pressure of the first pressing sleeve 1a and cannot be stretched well. Similarly, at this time, the second nip roller 501c2 can also move with the movement of the second pressing sleeve 1b, reducing the possibility that the fabric will be piled up on the surface of the second nip roller 501c2 under the pressure of the second pressing sleeve 1b and cannot be stretched well.

[0100] Furthermore, when the first rod 501a and the second rod 501b move away from the support shaft 1 synchronously, the first nip roller 501c1 and the second nip roller 501c2 can be reset to the stretching starting position.

[0101] As attached Figure 7 As shown, in this embodiment, both ends of the first pressing roller 501c1 are provided with mounting parts 502 that link the first rod 501a to the rotating shaft 3; and, between the end of the first pressing roller 501c1 and a mounting part 502 adjacent to the end, a reset part 503 is provided to drive the moving first pressing roller 501c1 to reset. The reset part 503 is preferably a spring or a component similar to a spring that can provide a reset elastic force.

[0102] As attached Figure 7 As shown, in this embodiment, both ends of the second pressing roller 501c2 are provided with mounting parts 502 that link the second rod 501b to the rotating shaft 3; and, a reset part 503 is provided between the end of the second pressing roller 501c2 and a mounting part 502 adjacent to the end to drive the moving second pressing roller 501c2 to reset. The reset part 503 is preferably a spring or a component similar to a spring that can provide a reset elastic force.

[0103] Example 2:

[0104] Considering the limitation of the moving stroke of the pressing sleeve, it is difficult to stretch the fabric to the required size with a single stretch. Based on this, based on the fabric stretching mechanism in any scheme in the embodiment 1, a structure as shown in the attached figure is formed. Figure 4 , Attachment Figure 5 A fabric stretching device is shown.

[0105] Specifically, a fabric stretching device, such as the attached Figure 4 , Attachment Figure 5 As shown, there are two fabric stretching mechanisms, which are arranged at intervals in the transverse direction, and the feeding space in one fabric stretching mechanism is arranged in transverse alignment with the feeding space in the other fabric stretching mechanism, so that after the fabric is stretched and output from the feeding space of one fabric stretching mechanism, it can enter the feeding space of the other fabric stretching mechanism for stretching again, so that the fabric can pass through the two fabric stretching mechanisms in sequence to achieve alternating working and continuous stretching, so that the fabric can be stretched to the required size, so as to improve the quality of the subsequent shaping of the fabric.

[0106] As attached Figure 5 As shown, in order to avoid the interference hidden danger of the rotation of the pressing assembly 5, it is preferred that the pressing assembly 5 of one fabric stretching mechanism is arranged opposite to the pressing assembly 5 of another fabric stretching mechanism.

[0107] Furthermore, in order to achieve smooth movement of the fabric, the support shaft 1 in one fabric stretching mechanism and the support shaft 1 in another fabric stretching mechanism preferably rotate at the same speed and direction; based on this, in this embodiment, the support shaft 1 in one fabric stretching mechanism and the support shaft 1 in another fabric stretching mechanism are both transmission-connected to a support shaft rotating motor 6.

[0108] Specifically, a first drive gear 601 and a second drive gear 602 are fixedly connected to the rotating output shaft of the support shaft rotating motor 6 at intervals. The support shaft transmission gear 103 on the support shaft 1 in one fabric stretching mechanism is meshed with the first drive gear 601, and the support shaft transmission gear 103 on the support shaft 1 in the other fabric stretching mechanism is meshed with the second drive gear 602.

[0109] The fabric stretching device can stretch statically placed fabric.

[0110] However, it should be further explained that in order to improve the stretching efficiency of the fabric, it is preferred that the stretching and movement of the fabric be performed synchronously, that is, the fabric is stretched while being driven to move forward by rotating the support shaft 1 .

[0111] At this time, if the pressing assembly 5 in one fabric stretching mechanism and the pressing assembly 5 in another fabric stretching mechanism operate synchronously, that is, the pressing assembly 5 in one fabric stretching mechanism and the pressing assembly 5 in another fabric stretching mechanism press the fabric synchronously, time must be reserved for the pressing assembly 5 in one fabric stretching mechanism and the pressing assembly 5 in another fabric stretching mechanism to be synchronously separated from the fabric so that the pressing sleeve can return to the stretching starting point of the support shaft 1, which will affect the stretching efficiency of the fabric.

[0112] When the pressing assembly 5 in one fabric stretching mechanism and the pressing assembly 5 in another fabric stretching mechanism clamp the fabric synchronously, the pressing and clamping effect on the fabric will be too large, affecting the fabric from moving smoothly and further affecting the overall stretching effect.

[0113] When the pressing assembly 5 in one fabric stretching mechanism and the pressing assembly 5 in another fabric stretching mechanism move away from the fabric synchronously, the moving fabric will have no guide limit, and the fabric will easily wrinkle during the moving process, which will hinder the stretching action of the fabric.

[0114] Based on this, in this embodiment, it is preferred that one fabric stretching mechanism (primarily referring to the sleeve pressing drive device 2 and the twisting shaft drive device 4 therein) and another fabric stretching mechanism (primarily referring to the sleeve pressing drive device 2 and the twisting shaft drive device 4 therein) are arranged to operate alternately, so that one fabric stretching mechanism and the other fabric stretching mechanism can alternately perform stretching operations on the fabric. This stretching operation includes providing stretching, pressing, and even twisting actions on the fabric during stretching. (For ease of description, one fabric stretching mechanism will be referred to as the first fabric stretching mechanism, and the other fabric stretching mechanism will be referred to as the second fabric stretching mechanism.)

[0115] That is, in the first step, the pressing assembly 5 of the first fabric stretching mechanism is close to the support shaft 1 of the first fabric stretching mechanism to clamp the fabric with the two pressing sleeves of the first fabric stretching mechanism and drive the two pressing sleeves to move to perform the first stretching treatment on the fabric; the pressing assembly 5 of the second fabric stretching mechanism is away from the support shaft 1 of the second fabric stretching mechanism, so that the two pressing sleeves of the second fabric stretching mechanism can be reset and moved to the stretching starting point of the support shaft 1 of the second fabric stretching mechanism, preparing for the secondary stretching of the fabric.

[0116] In the second step, the pressing assembly 5 of the first fabric stretching mechanism is away from the support shaft 1 of the first fabric stretching mechanism, and the two pressing sleeves of the first fabric stretching mechanism can be reset and moved to the stretching starting point of the support shaft 1 of the first fabric stretching mechanism; at the same time, the pressing assembly 5 of the second fabric stretching mechanism is close to the support shaft 1 of the second fabric stretching mechanism, so as to clamp the fabric flowing out of the first fabric stretching mechanism and stretched together with the two pressing sleeves of the second fabric stretching mechanism, and drive the two pressing sleeves to move to stretch this part of the fabric, thereby realizing continuous stretching of the fabric, so that the fabric can be stretched to the required size, so as to improve the quality of the subsequent shaping of the fabric.

[0117] Subsequently, the first and second steps are repeated to perform a secondary continuous stretching operation on the fabric that subsequently enters the fabric stretching device.

[0118] During this process, when the fabric moves, there is always a fabric stretching mechanism that can clamp the fabric and guide the fabric to move forward through the rotating support shaft 1 to improve the smoothness of the fabric movement. At the same time, another fabric stretching mechanism can perform the reset operation of the pressing sleeve. In this way, on the one hand, it will not cause excessive top pressure restrictions on the fabric, thereby hindering the movement of the fabric and affecting the fabric stretching effect. On the other hand, there is no need to reserve additional reset time for the pressing sleeve, and the fabric can be stretched continuously, and the overall stretching efficiency is higher.

[0119] Of course, during the alternating operation of the two fabric stretching mechanisms, a period of time is allowed during which the two fabric stretching mechanisms clamp the fabric at the same time to ensure that the alternating clamping of the fabric can be carried out more smoothly, and to avoid the possibility of the fabric being offset or stacked during movement due to the fact that both fabric stretching mechanisms do not clamp the fabric during the alternating operation.

[0120] Furthermore, the need for multiple stretching may be taken into consideration, or multiple fabrics a may be stretched synchronously.

[0121] As attached Figure 6 As shown, a twisting shaft 3 is arranged at intervals below the support shaft 1 of the first fabric stretching mechanism, and the twisting shaft 3 is connected to a twisting shaft driving device 4 that provides rotational force to it, and the twisting shaft 3 is linked to a pressing component 5 that rotates with the twisting shaft 3 and approaches or moves away from the support shaft 1 in the first fabric stretching mechanism; the twisting shaft driving device 4 can be the twisting shaft driving device 4 in the first fabric stretching mechanism, so that a twisting shaft driving device 4 can synchronously drive the upper and lower twisting shafts 3 to rotate. The specific transmission connection structure is described above and will not be described in detail here.

[0122] The support shaft 1 of the second fabric stretching mechanism can also be provided with a twisting shaft 3 at intervals below. The twisting shaft 3 is connected to a twisting shaft driving device 4 that provides rotational force to it, and the twisting shaft 3 is linked to: a pressing component 5 that rotates with the twisting shaft 3 and approaches or moves away from the support shaft 1 in the second fabric stretching mechanism; the twisting shaft driving device 4 can be the twisting shaft driving device 4 in the second fabric stretching mechanism, so that a twisting shaft driving device 4 can synchronously drive the upper and lower twisting shafts 3 to rotate. The specific transmission connection structure is described above and will not be described in detail here.

[0123] Example 3:

[0124] A setting machine includes a fabric stretching mechanism according to any one of the schemes in embodiment 1, or includes a fabric stretching device according to any one of the schemes in embodiment 2.

[0125] The above description is merely a preferred embodiment of the present invention and does not limit the scope of the present invention. In addition, the terms "vertical," "horizontal," "front," and "rear" used in the embodiments of the present invention to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product is typically placed when in use, are intended only to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. It should be further noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "fixed" used in the description should be understood broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood based on the specific circumstances. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0126] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A fabric stretching mechanism, characterized in that: include: A support shaft (1) having a first pressing sleeve (1a) and a second pressing sleeve (1b) movably sleeved on its outer periphery, wherein the first pressing sleeve (1a) and the second pressing sleeve (1b) are connected to a pressing sleeve driving device (2) for driving the first pressing sleeve (1a) and the second pressing sleeve (1b) to move closer to or further away from each other on the support shaft (1); A twisting shaft (3) is spaced apart and disposed above the support shaft (1), and is connected to a twisting shaft driving device (4) for providing a rotational force thereto, wherein the space between the twisting shaft (3) and the support shaft (1) forms a material feeding space for the fabric to travel; Furthermore, the twisting shaft (3) is linked to: a material pressing component (5) that rotates with the twisting shaft (3) and approaches or moves away from the support shaft (1); The pressing assembly (5) is adapted to be arranged in the moving area of ​​the first pressing sleeve (1a) and the moving area of ​​the second pressing sleeve (1b) so that: When the pressing assembly (5) is close to the support shaft (1), a portion of the pressing assembly (5) always forms a clamping structure for the fabric together with the movable first pressing sleeve (1a), and another portion of the pressing assembly (5) always forms a clamping structure for the fabric together with the movable second pressing sleeve (1b).

2. A fabric stretching mechanism according to claim 1, characterized in that: The sleeve pressing drive device (2) comprises: A first lead screw (201) is inserted into the support shaft (1) so as to fit the position of the first pressing sleeve (1a); a first connecting sleeve (202) is screwed onto the first lead screw (201); the first connecting sleeve (202) is convexly formed with: a first sliding groove (101) passing through the support shaft (1) and a first connecting portion (2021) fixed to the first pressing sleeve (1a); A second lead screw (203) is inserted into the support shaft (1) so as to fit the position of the second pressing sleeve (1b); a second connecting sleeve (204) is screwed onto the second lead screw (203); the second connecting sleeve (204) is convexly formed with: a second sliding groove (102) passing through the support shaft (1) and a second connecting portion (2041) fixed to the second pressing sleeve (1b); The first lead screw (201) and the second lead screw (203) are connected in transmission via a transmission rod (205), and the outer end of the first lead screw (201) or the outer end of the second lead screw (203) is connected in transmission to: a lead screw rotating motor (206) that provides a rotational force to the lead screw; Alternatively, the first lead screw (201) and the second lead screw (203) are coaxially integrally formed into a lead screw member, and the lead screw member is connected to a lead screw rotating motor (206) that provides rotational force to the lead screw member.

3. A fabric stretching mechanism according to claim 1, characterized in that: The pressing component (5) comprises: A pressing rod (501) adapted to be arranged in the moving area of ​​the first pressing sleeve (1a) and the moving area of ​​the second pressing sleeve (1b), comprising a portion for forming a fabric clamping structure together with the first pressing sleeve (1a), and a portion for forming a fabric clamping structure together with the second pressing sleeve (1b); A plurality of mounting members (502), each of the mounting members (502) is connected to the twisting shaft (3) at one end and to the pressing rod (501) at the other end, so that the rotating twisting shaft (3) can drive the pressing rod (501) to approach or move away from the support shaft (1) through the mounting member (502).

4. A fabric stretching mechanism according to claim 3, characterized in that: The pressing rod (501) comprises: a first rod (501a) and a second rod (501b) spaced apart in the extension direction of the support shaft (1); the first rod (501a) and the second rod (501b) are both linked to the twisting shaft (3) via a plurality of mounting members (502); The first rod (501a) is adapted to be arranged in the moving area of ​​the first pressing sleeve (1a) so as to have a portion for forming a fabric clamping structure together with the first pressing sleeve (1a); The second rod (501b) is adapted to be arranged in the moving area of ​​the second pressing sleeve (1b) so as to have a portion for forming a fabric clamping structure together with the second pressing sleeve (1b).

5. The fabric stretching mechanism according to claim 3, characterized in that: The support shaft (1) is rotatably arranged, and the support shaft (1) is transmission-connected to a support shaft rotating motor (6) that provides a rotating force thereto.

6. A fabric stretching mechanism according to claim 5, characterized in that: The pressing rod (501) comprises: a pressing roller (501c) rotatably arranged and used to contact the cloth; Furthermore, the rotation direction of the pressing roller (501c) is matched with the rotation direction of the support shaft (1), so that when the support shaft (1) is connected to the pressing roller (501c), the rotating support shaft (1) can drive the pressing roller (501c) to rotate synchronously.

7. The fabric stretching mechanism according to claim 4, characterized in that: The outer circumference of the first rod (501a) is rotatably fitted with: a first pressing roller (501c1) capable of moving along the extension direction of the first rod (501a); The outer circumference of the second rod (501b) is rotatably fitted with: a second pressing roller (501c2) capable of moving along the extension direction of the second rod (501b); So that when the fabric is stretched, the first pressing roller (501c1) can move along with the movement of the first pressing sleeve (1a), and the second pressing roller (501c2) can move along with the movement of the second pressing sleeve (1b).

8. The fabric stretching mechanism according to claim 7, characterized in that: Both ends of the first pressing roller (501c1) are provided with: the mounting member (502) for connecting the first rod (501a) to the rotating shaft (3) in a linkage manner; Furthermore, a reset member (503) for driving the moving first nip roller (501c1) to reset is provided between the end of the first nip roller (501c1) and one of the mounting members (502) adjacent to the end; and / or; Both ends of the second pressing roller (501c2) are provided with: the mounting member (502) for connecting the second rod (501b) to the rotating shaft (3) in a linkage manner; Furthermore, a reset member (503) for driving the moving second nip roller (501c2) to reset is provided between the end of the second nip roller (501c2) and one of the mounting members (502) adjacent to the end.

9. The fabric stretching mechanism according to claim 3, characterized in that: One end of the mounting member (502) is rotatably connected to the rotating shaft (3); Furthermore, a shaft sleeve (301) is fixedly connected to the rotating shaft (3) so as to fit the mounting member (502), a torsion spring (7) is connected between the shaft sleeve (301) and the mounting member (502), and one end of the torsion spring (7) is fixedly connected to the shaft sleeve (301) and the other end is fixedly connected to the mounting member (502).

10. A fabric stretching device, characterized in that: Comprising two fabric stretching mechanisms as claimed in any one of claims 1 to 9; The two fabric stretching mechanisms are arranged laterally at intervals, and the material feeding space in one fabric stretching mechanism is laterally aligned with the material feeding space in the other fabric stretching mechanism, so that the fabric can pass through the two fabric stretching mechanisms in sequence to achieve multiple stretching.

11. The fabric stretching device according to claim 10, characterized in that: The support shaft (1) in one fabric stretching mechanism and the support shaft (1) in another fabric stretching mechanism are both transmission-connected to a support shaft rotating motor (6).

12. The fabric stretching device according to claim 10, characterized in that: One fabric stretching mechanism and another fabric stretching mechanism are arranged to operate alternately, so that one fabric stretching mechanism and another fabric stretching mechanism can perform stretching operations on the fabric alternately.

13. A fabric stretching device according to any one of claims 10 to 12, characterized in that: A fabric stretching mechanism has the following components spaced apart below its support shaft (1): A twisting shaft (3), the twisting shaft (3) being in driving connection with a twisting shaft driving device (4) for providing a rotational force thereto, and the twisting shaft (3) being linked to: a pressing component (5) that rotates with the twisting shaft (3) and approaches or moves away from the support shaft (1) in the fabric stretching mechanism; and / or; The following are arranged at intervals below the support shaft (1) of another fabric stretching mechanism: A twisting shaft (3) is transmission-connected to a twisting shaft driving device (4) for providing a rotational force thereto, and the twisting shaft (3) is linked to a material pressing component (5) that rotates with the twisting shaft (3) and approaches or moves away from a support shaft (1) in another fabric stretching mechanism.

14. A shaping machine, characterized in that: A fabric stretching mechanism comprising any one of claims 1 to 9, or a fabric stretching device comprising any one of claims 10 to 13.

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