A tension control device suitable for light fabrics

Abstract

The invention discloses a tension control device suitable for light fabrics, comprising a left frame, a right frame, a tension roller and a transition roller, wherein the left frame is connected with a left roller bracket through a left lifting support, and the right frame is connected with a right roller bracket through a right lifting support; the upper part of the left roller bracket is connected with a left buffer linkage mechanism, the upper part of the left buffer linkage mechanism is rotationally connected with the left end of the tension roller, and the lower part of the left buffer linkage mechanism is positionally connected with the left frame; the upper part of the right roller bracket is connected with a right buffer linkage mechanism, the upper part of the right buffer linkage mechanism is connected with the right end of the tension roller, and the lower part of the right buffer linkage mechanism is positionally connected with the right frame; the transition roller is located below the tension roller, and the transition roller is connected between the lower part of the left roller bracket and the lower part of the right roller bracket through a bearing. The tension control device is more suitable for weaving low-tension variable fabrics in a high-speed operation state, and has a more novel structure and higher practicality.

Description

Technical Field

[0001] The invention relates to the field of textile machinery, and in particular to a tension control device suitable for light fabrics. Background Art

[0002] The air jet loom is a shuttleless loom that uses a jet of air to pull the weft yarn through the shed. The working principle is to use air as the weft insertion medium, and to use the ejected compressed air flow to generate friction traction on the weft yarn to pull the weft yarn, bring the weft yarn through the shed, and achieve the purpose of weft insertion through the jet generated by the air jet. During the weaving process of the warp yarn in the loom, the tension of the warp yarn is not constant. The prior art does not have a warp tension control device suitable for weaving low-tension variable fabrics in high-speed operation. The existing tension control structure is a tension roller supported on the lower transition roller core shaft. The tension changes greatly during the weaving process, and the sliding friction between the roller and the warp yarn is large. The present invention adopts innovative technology to solve the defects of the above-mentioned fabric weaving, so as to achieve the purpose of high-speed weaving of high-quality low-tension variable fabrics. Summary of the invention

[0003] The object of the present invention is to provide a tension control device suitable for light fabrics, which is more suitable for weaving low-tension variable fabrics in high-speed operation and has a more novel structure and higher practicality.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is:

[0005] A tension control device suitable for light fabrics comprises a left frame, a right frame, a tension roller and a transition roller, wherein the left frame is connected to a left roller bracket via a left lifting support, and the right frame is connected to a right roller bracket via a right lifting support; the upper part of the left roller bracket is connected to a left buffer linkage mechanism, the upper part of the left buffer linkage mechanism is rotatably connected to the left end of the tension roller, and the lower part of the left buffer linkage mechanism is positionally connected to the left frame;

[0006] The upper part of the right roller bracket is connected with a right buffer linkage mechanism, the upper part of the right buffer linkage mechanism is connected to the right end of the tension roller, and the lower part of the right buffer linkage mechanism is positioned and connected to the right frame; the transition roller is located below the tension roller, and the two ends of the transition roller are connected to the lower part of the left roller bracket and the lower part of the right roller bracket through bearings.

[0007] Preferably, the left buffer linkage mechanism includes a left tension swing assembly and a left swing buffer assembly, and the left tension swing assembly includes a left tension bracket and a first swing arm;

[0008] The middle part of the left tension bracket is rotatably connected to the left roller bracket through the first tension support shaft assembly, the left tension bracket is rotatably connected to the upper part of the first swing arm through the first swing arm support shaft assembly, and the rear end of the left tension bracket is connected to the left roller bracket through the tension sensing assembly;

[0009] The middle part of the first swing arm is rotatably connected to the left end of the tension roller through the first swing arm bearing; the lower part of the first swing arm is connected to the left swing buffer assembly.

[0010] Preferably, the left swing buffer assembly comprises a left buffer connecting rod and a left buffer mounting plate, and the front end of the left buffer connecting rod is rotatably connected to the lower part of the first swing arm through a first connecting rod shaft pin;

[0011] The left buffer mounting plate is fixedly connected to the left end surface of the left frame by bolts, and the outer end bolt of the left buffer mounting plate is connected to the left swing frame seat;

[0012] The left buffer link passes through the left swing frame seat, the rear portion of the left buffer link is positioned and connected with a first preload spring, the front portion of the left buffer link is positioned and connected with a first buffer spring, and the first preload spring and the first buffer spring are respectively located on both sides of the left swing frame seat.

[0013] Preferably, the front portion and the rear portion of the left buffer connecting rod are respectively connected with a first left spring screw sleeve and a second left spring screw sleeve;

[0014] A first swing frame through hole for the left buffer connecting rod to pass through is provided in the left swing frame seat, and a first left spring limiting shaft sleeve and a second left spring limiting shaft sleeve are respectively provided in the front part and the rear part of the first swing frame through hole;

[0015] The first buffer spring is limited between the first left spring screw sleeve and the first left spring limiting sleeve, and the first pre-compression spring is limited between the second left spring screw sleeve and the second left spring limiting sleeve;

[0016] The elastic coefficient of the first pre-compression spring is smaller than the elastic coefficient of the first buffer spring.

[0017] Preferably, the right buffer linkage mechanism includes a right tension swing assembly and a right swing buffer assembly, and the right tension swing assembly includes a right tension bracket and a second swing arm;

[0018] The middle part of the right tension bracket is rotatably connected to the right roller bracket through the second tension support shaft assembly, the right tension bracket is rotatably connected to the upper part of the second swing arm through the second swing arm support shaft assembly, and the rear end of the right tension bracket is connected to the right roller bracket through the right tension connecting rod assembly;

[0019] The middle part of the second swing arm is rotatably connected to the right end of the tension roller through the second swing arm bearing; the lower part of the second swing arm is connected to the right swing buffer assembly.

[0020] Preferably, the right swing buffer assembly comprises a right buffer connecting rod and a right buffer mounting plate, and the right buffer connecting rod is rotatably connected to the lower part of the second swing arm through a second connecting rod shaft pin;

[0021] The right buffer mounting plate is fixedly connected to the right end surface of the right frame by bolts, and the outer end bolts of the right buffer mounting plate are connected to the right swing frame seat;

[0022] The right buffer link passes through the right swing frame seat, the rear portion of the right buffer link is positioned and connected with a second pre-compression spring, the front portion of the right buffer link is positioned and connected with a second buffer spring, and the second buffer spring and the second pre-compression spring are respectively located on both sides of the right swing frame seat.

[0023] Preferably, the front portion and the rear portion of the right buffer connecting rod are respectively connected with a first right spring screw sleeve and a second right spring screw sleeve;

[0024] A second swing frame through hole for the right buffer connecting rod to pass through is provided in the right swing frame seat, and a first right spring limiting shaft sleeve and a second right spring limiting shaft sleeve are respectively provided in the front part and the rear part of the second swing frame through hole;

[0025] The second buffer spring is limited between the first right spring screw sleeve and the first right spring limiting sleeve, and the second pre-compression spring is limited between the second right spring screw sleeve and the second right spring limiting sleeve;

[0026] The elastic coefficient of the second pre-compression spring is smaller than the elastic coefficient of the second buffer spring.

[0027] Preferably, the left frame is provided with a plurality of first frame mounting holes, the left lifting support is connected to the left frame through the first frame mounting holes, and the left lifting support adjusts the installation position in the up-and-down direction through the first frame mounting holes on the left frame;

[0028] The right rack is provided with a plurality of second rack mounting holes, the right lifting support is connected to the right rack through the second rack mounting holes, and the right lifting support adjusts the installation position in the up and down directions through the second rack mounting holes on the right rack.

[0029] Preferably, a first strip-shaped mounting slot is provided on the side wall of the left lifting support, and the left roller bracket is positioned and connected to the left lifting support through the first strip-shaped mounting slot using bolts, and the left roller bracket can adjust the mounting position in the front-rear direction through the first strip-shaped mounting slot;

[0030] A second strip-shaped mounting slot is provided on the side wall of the right lifting support, and the right roller bracket is positioned and connected to the right lifting support by bolts through the second strip-shaped mounting slot; the right roller bracket can adjust the installation position in the front-rear direction through the second strip-shaped mounting slot.

[0031] Preferably, a first position positioning scale line is arranged on the outer wall of the left lifting support above the first strip-shaped installation slot hole; and a second position positioning scale line is arranged on the outer wall of the right lifting support above the second strip-shaped installation slot hole.

[0032] The beneficial effects of the present invention are:

[0033] 1. The tension roller is above the transition roller and slightly tilted forward to form a larger wrap angle. In this way, when the cloth mouth is switched between open and closed, the tension roller only needs a smaller swing amplitude to compensate for the change in the opening and closing warp yarns. In this way, the tension roller has a better tracking state during high-speed operation and the tension change is relatively small.

[0034] 2. The support shaft of the tension roller swing arm is slightly tilted forward on the upper part of the roller. The support shaft center, the tension roller center and the transition roller center are close to a 180° straight line. In this way, the length of the warp yarn behind the tension roller rarely changes when the tension roller swings. This is because the tension roller will not rotate on its own under the action of inertia when the loom is running at high speed, that is, the tension roller does not rotate (rotate on its own) while swinging with the swing arm (revolution), thus avoiding unstable tension and wear of the warp yarn caused by sliding between the tension roller and the warp yarn.

[0035] 3. In the present invention, a buffer spring and a pre-stress spring are combined. The buffer spring is compressed to a certain extent when the machine is empty and has no warp yarns through pre-stressing. The elastic coefficient of the pre-stressing spring is smaller than that of the buffer spring. During pre-stressing, the pre-stressing spring has a larger compression than that of the buffer spring. When the warp yarn tension is applied, the buffer spring increases the compression amount, and the pre-stressing spring reduces the compression amount. Due to the use of pre-stressing, the spring will not vibrate due to the small compression amount of the spring when the swing arm swings due to the high-speed response. The warp yarn tension of light fabrics is relatively small. If there is only a buffer spring, the compression amount of the spring is relatively small, which will cause vibration.

[0036] 4. In the present invention, a rotatable swing frame structure is used to support the buffer spring and the preload spring. When the swing arm drives the buffer connecting rod to swing and produce a certain rotation, the spring swing frame can rotate to avoid the spring distortion and deformation, which makes the tension sensing inaccurate. The rotatable spring swing frame structure makes the mechanism more reasonable and has a better use effect.

[0037] 5. The connecting line between the support shaft of the tension bracket and the swing arm support shaft adopts a relatively small horizontal angle, so that the pressure of the warp tension acting on the swing arm support shaft can have a larger torsional force arm, generating a larger torsional moment, so that the tension sensing connecting rod assembly can sense the warp tension size at a larger proportion, and the tension sensing is more accurate.

[0038] 6. The left lifting support and the right lifting support of the structure in the present invention can be adjusted up and down, and the left roller support and the right roller support can be adjusted forward and backward to meet the needs of the weaving process. The overall structure has strong adaptability and is easy to adjust the fabric variety.

[0039] 7. In the above-mentioned tension control device suitable for light fabrics, the buffer spring part can be removed and replaced with a warp loosening connecting rod device connected to the synchronous transmission output shaft of the loom, so as to conveniently change to an active warp loosening tension control mode, which can be used flexibly and has high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 It is an isometric schematic diagram of the overall structure of a tension control device suitable for light fabrics.

[0042] Figure 2 The left side schematic diagram of the overall structure of a tension control device suitable for light fabrics.

[0043] Figure 3 The present invention is a schematic top view of the overall structure of a tension control device suitable for light fabrics.

[0044] Figure 4 It is a side view schematic diagram of the connection structure of the left tension swing component and the left swing buffer component.

[0045] Figure 5 It is a cross-sectional schematic diagram of the connection structure of the left tension swing component and the left swing buffer component.

[0046] Figure 6 It is a side view schematic diagram of the connection structure of the right tension swing assembly and the right swing buffer assembly.

[0047] Figure 7 This is a schematic diagram of the warp yarn route in Example 2. DETAILED DESCRIPTION

[0048] The present invention provides a tension control device suitable for light fabrics. To make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0049] The present invention is described in detail below in conjunction with the accompanying drawings:

[0050] Example 1

[0051] Combination Figures 1 to 7 A tension control device suitable for light fabrics comprises a left frame 1, a right frame 11, a tension roller 12 and a transition roller 13. The left frame 1 is connected to a left roller support 15 via a left lifting support 14, and the right frame 11 is connected to a right roller support 17 via a right lifting support 16.

[0052] The upper portion of the left roller bracket 15 is connected to the left buffer linkage mechanism 2 , the upper portion of the left buffer linkage mechanism 2 is rotationally connected to the left end of the tension roller 12 , and the lower portion of the left buffer linkage mechanism 2 is positionally connected to the left frame 1 .

[0053] The upper part of the right roller bracket 17 is connected to the right buffer linkage mechanism 3, the upper part of the right buffer linkage mechanism 3 is connected to the right end of the tension roller 12, and the lower part of the right buffer linkage mechanism 3 is positioned and connected to the right frame 11; the transition roller 13 is located below the tension roller 12, and the two ends of the transition roller 13 are connected to the lower part of the left roller bracket 15 and the lower part of the right roller bracket 17 through bearings.

[0054] The left buffer linkage mechanism 2 includes a left tension swing assembly 4 and a left swing buffer assembly 5 . The left tension swing assembly 4 includes a left tension bracket 41 and a first swing arm 42 .

[0055] The middle part of the left tension bracket 41 is rotatably connected to the left roller bracket 15 through the first tension support shaft assembly 43, the left tension bracket 41 is rotatably connected to the upper part of the first swing arm 42 through the first swing arm support shaft assembly 44, and the rear end of the left tension bracket 41 is connected to the left roller bracket 15 through the tension sensing assembly 45.

[0056] The middle portion of the first swing arm 42 is rotatably connected to the left end of the tension roller 12 via a first swing arm bearing 46 ; the lower portion of the first swing arm 42 is connected to the left swing buffer assembly 5 .

[0057] The left swing buffer assembly 5 includes a left buffer link 51 and a left buffer mounting plate 52 . The front end of the left buffer link 51 is rotatably connected to the lower portion of the first swing arm 42 via a first link shaft pin 53 .

[0058] The left buffer mounting plate 52 is fixedly connected to the left end surface of the left frame 1 by bolts, and the outer end bolts of the left buffer mounting plate 52 are connected to the left swing frame seat 54.

[0059] The left buffer link 51 passes through the left swing frame seat 54 , a first preload spring 55 is positioned and connected to the rear portion of the left buffer link 51 , a first buffer spring 56 is positioned and connected to the front portion of the left buffer link 51 , and the first preload spring 55 and the first buffer spring 56 are respectively located on both sides of the left swing frame seat 54 .

[0060] A first left spring sleeve 511 and a second left spring sleeve 512 are connected to the front and rear of the left buffer connecting rod 51 respectively;

[0061] A first swing frame through hole for the left buffer link 51 to pass through is provided in the left swing frame seat 54, and a first left spring limiting shaft sleeve 541 and a second left spring limiting shaft sleeve 542 are respectively provided in the front and rear parts of the first swing frame through hole.

[0062] The first buffer spring 56 is limited between the first left spring screw sleeve 511 and the first left spring limiting sleeve 541, and the first pre-compression spring 55 is limited between the second left spring screw sleeve 512 and the second left spring limiting sleeve 542. The elastic coefficient of the first pre-compression spring 55 is smaller than the elastic coefficient of the first buffer spring 56.

[0063] The right buffer linkage mechanism 3 includes a right tension swing assembly 6 and a right swing buffer assembly 7 . The right tension swing assembly 6 includes a right tension bracket 61 and a second swing arm 62 .

[0064] The middle part of the right tension bracket 61 is rotatably connected to the right roller bracket 17 through the second tension support shaft assembly 63, the right tension bracket 61 is rotatably connected to the upper part of the second swing arm 62 through the second swing arm support shaft assembly 64, and the rear end of the right tension bracket 61 is connected to the right roller bracket 17 through the right tension connecting rod assembly 65.

[0065] The middle part of the second swing arm 62 is rotatably connected to the right end of the tension roller 12 through the second swing arm bearing 66 ; the lower part of the second swing arm 62 is connected to the right swing buffer assembly 7 .

[0066] The right swing buffer assembly 7 includes a right buffer link 71 and a right buffer mounting plate 72 . The right buffer link 71 is rotationally connected to the lower portion of the second swing arm 62 via a second link shaft pin 73 .

[0067] The right buffer mounting plate 72 is fixedly connected to the right end surface of the right frame 11 by bolts, and the outer end bolts of the right buffer mounting plate 72 are connected to the right swing frame seat 74.

[0068] The right buffer link 71 passes through the right swing frame seat 74 , a second pre-compression spring 75 is positioned and connected to the rear portion of the right buffer link 71 , a second buffer spring 76 is positioned and connected to the front portion of the right buffer link 71 , and the second buffer spring 76 and the second pre-compression spring 75 are respectively located on both sides of the right swing frame seat 74 .

[0069] The front portion and the rear portion of the right buffer link 71 are respectively connected with a first right spring screw sleeve 711 and a second right spring screw sleeve 712 .

[0070] A second swing frame through hole for the right buffer connecting rod to pass through is provided in the right swing frame seat 74, and a first right spring limiting shaft sleeve and a second right spring limiting shaft sleeve are respectively provided in the front and rear parts of the second swing frame through hole 74.

[0071] The second buffer spring 76 is limited between the first right spring screw sleeve 711 and the first right spring limiting sleeve, and the second pre-compression spring 75 is limited between the second right spring screw sleeve 712 and the second right spring limiting sleeve.

[0072] The elastic coefficient of the second preload spring 75 is smaller than the elastic coefficient of the second buffer spring 76. The left frame 1 is provided with a plurality of first frame mounting holes, and the left lifting support 14 is connected to the left frame 1 through the first frame mounting holes. The left lifting support 14 is adjusted to its installation position in the up-and-down direction through the first frame mounting holes on the left frame 1; the left lifting support 14 is installed on the first frame mounting holes at different positions, thereby realizing the adjustment of its own position and adapting to the needs of the weaving process.

[0073] The right frame 11 is provided with a plurality of second frame mounting holes, and the right lifting support 16 is connected to the right frame 11 through the second frame mounting holes. The right lifting support 16 is adjusted to the installation position in the up and down direction through the second frame mounting holes on the right frame. In order to maintain the consistency of the up and down heights of the left lifting support 14 and the right lifting support 16, the right lifting support 16 also needs to adjust the height adaptively. The right lifting support 16 is installed on the second frame mounting holes at different positions, so as to realize the adjustment of its own position and meet the needs of the weaving process.

[0074] A first strip-shaped mounting slot 141 is provided on the side wall of the left lifting support 14. The left roller bracket 15 is positioned and connected to the left lifting support 14 by bolts through the first strip-shaped mounting slot 141. The left roller bracket 15 can adjust the installation position in the front-rear direction through the first strip-shaped mounting slot.

[0075] A second strip-shaped mounting slot 161 is provided on the side wall of the right lifting support 16, and the right roller bracket 17 is positioned and connected to the right lifting support 16 by bolts through the second strip-shaped mounting slot 161; the right roller bracket 17 adjusts the installation position in the front-to-back direction through the second strip-shaped mounting slot 161.

[0076] A first position positioning scale line 142 is arranged on the outer wall of the left lifting support 14 above the first strip-shaped installation slot hole 141 ; a second position positioning scale line 162 is arranged on the outer wall of the right lifting support 16 above the second strip-shaped installation slot hole 161 .

[0077] Example 2

[0078] Combination Figures 1 to 7 When the above-mentioned tension control device suitable for light fabrics is working, the warp yarn on the weaving shaft 8 passes through the transition roller upward, then passes through the tension roller forward, and passes through the heald structure 81 to reach the cloth fell.

[0079] There are two states of warp yarn passing:

[0080] The first type is the warp yarn route in the flat weft state: the points where the warp yarn passes through are A-B0-C0-D0-E0-FG;

[0081] The second type is the warp yarn route in the weaving opening state:

[0082] The points through which the upper warp yarns of this type pass are: A-B1-C1-D1-E1-FG; the points through which the lower warp yarns of this type pass are: A-B2-C2-D1-E1-FG;

[0083] The lengths of the warp yarns in the upper and lower layers differ little, and the tension of the upper and lower layers has little effect when the tension roller is opened.

[0084] When the loom is open and closed, the tension roller swings back and forth under the action of the warp tension, and the buffer spring ensures that the tension changes less.

[0085] The pressure of the warp on the tension roller and the thrust of the left swing buffer assembly and the right swing buffer assembly work together to achieve the rotation balance of the first swing arm and the second swing arm. The combined force of the two forms the pressure of the swing arm on the left tension bracket and the right tension bracket through the swing arm support shaft. The torque generated by the tension bracket forms a pulling force on the tension sensing assembly through the tension support shaft, thereby transmitting the warp tension to the tension sensing device at a certain ratio.

[0086] The tension sensing component 45 in the present invention is installed on the left buffer linkage mechanism 2 , and the tension sensing component 45 can also be installed on the right tension link component 65 in the right buffer linkage mechanism 3 .

[0087] Example 3

[0088] Combination Figures 1 to 7 In the above-mentioned tension control device suitable for light fabrics, the tension roller is above the transition roller and is slightly tilted forward (shown as Φ2), forming a larger wrap angle (shown as Φ1). In this way, when the cloth fell A is switched between open and closed, the tension roller only needs a smaller swing amplitude to compensate for the change in the opening and closing warp yarns. In this way, the tension roller has a better tracking state during high-speed operation and a smaller tension change.

[0089] The support shaft of the tension roller swing arm is slightly tilted forward on the upper part of the roller. The support shaft center, the tension roller center and the transition roller center are close to a straight line of 180°. In this way, the length of the warp yarn behind the tension roller rarely changes when the tension roller swings. This is because the tension roller will not rotate on its own under the action of inertia when the loom is running at high speed, that is, the tension roller does not rotate (rotate on its own) while swinging with the swing arm (revolution), thus avoiding unstable tension and wear of the warp yarn caused by sliding between the tension roller and the warp yarn.

[0090] In the present invention, a buffer spring and a pre-stress spring are combined. The buffer spring is compressed to a certain extent when the machine is empty and has no warp yarns through pre-stressing. The elastic coefficient of the pre-stressing spring is smaller than that of the buffer spring. During pre-stressing, the pre-stressing spring has a larger compression than that of the buffer spring. When the warp yarn tension is applied, the buffer spring increases the compression amount, and the pre-stressing spring reduces the compression amount. Due to the use of pre-stressing, when the swing arm swings, the spring responds at a high speed and will not vibrate due to the small compression amount of the spring. The warp yarn tension of light fabrics is relatively small. If there is only a buffer spring, the compression amount of the spring is relatively small, which will cause vibration.

[0091] In the present invention, a rotatable swing frame structure is used to support the buffer spring and the preload spring. When the swing arm drives the buffer connecting rod to swing and produce a certain rotation, the spring swing frame can rotate to avoid the spring twisting and deformation to make the tension sensing inaccurate. The rotatable spring swing frame structure makes the mechanism more reasonable and has a better use effect.

[0092] The connecting line between the support shaft of the tension bracket and the swing arm support shaft adopts a relatively small horizontal angle, so that the pressure of the warp tension acting on the swing arm support shaft can have a larger torsional force arm, generating a larger torsional moment, so that the tension sensing connecting rod assembly can sense the warp tension size at a larger proportion, and the tension sensing is more accurate.

[0093] The left lifting support and the right lifting support of the structure of the present invention can be adjusted up and down, and the left roller support and the right roller support can be adjusted forward and backward to meet the needs of the weaving process. The overall structure has strong adaptability and is convenient for adjusting fabric types.

[0094] Example 4

[0095] In the above-mentioned tension control device suitable for light fabrics, the buffer spring part can be removed and replaced with a warp loosening connecting rod device connected to the synchronous transmission output shaft of the loom, so as to conveniently change to an active warp loosening tension control mode.

[0096] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0097] Parts not described in the present invention can be implemented by adopting or drawing on existing technologies.

[0098] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A tension control device suitable for light fabrics, comprising a left frame, a right frame, a tension roller and a transition roller, characterized in that: The left frame is connected to a left roller bracket via a left lifting support, and the right frame is connected to a right roller bracket via a right lifting support; the upper part of the left roller bracket is connected to a left buffer linkage mechanism, the upper part of the left buffer linkage mechanism is rotatably connected to the left end of the tension roller, and the lower part of the left buffer linkage mechanism is positionedly connected to the left frame; The left buffer linkage mechanism includes a left tension swing assembly and a left swing buffer assembly, and the left tension swing assembly includes a left tension bracket and a first swing arm; The middle part of the left tension bracket is rotatably connected to the left roller bracket through the first tension support shaft assembly, the left tension bracket is rotatably connected to the upper part of the first swing arm through the first swing arm support shaft assembly, and the rear end of the left tension bracket is connected to the left roller bracket through the tension sensing assembly; The middle part of the first swing arm is rotatably connected to the left end of the tension roller through the first swing arm bearing; the lower part of the first swing arm is connected to the left swing buffer assembly; The left swing buffer assembly comprises a left buffer connecting rod and a left buffer mounting plate, and the front end of the left buffer connecting rod is rotatably connected to the lower part of the first swing arm through a first connecting rod shaft pin; The left buffer mounting plate is fixedly connected to the left end surface of the left frame by bolts, and the outer end bolt of the left buffer mounting plate is connected to the left swing frame seat; The left buffer connecting rod passes through the left swing frame seat, the rear portion of the left buffer connecting rod is positioned and connected with a first pre-compression spring, the front portion of the left buffer connecting rod is positioned and connected with a first buffer spring, and the first pre-compression spring and the first buffer spring are respectively located on both sides of the left swing frame seat; The front and rear parts of the left buffer connecting rod are respectively connected with a first left spring screw sleeve and a second left spring screw sleeve; A first swing frame through hole for the left buffer connecting rod to pass through is provided in the left swing frame seat, and a first left spring limiting shaft sleeve and a second left spring limiting shaft sleeve are respectively provided in the front part and the rear part of the first swing frame through hole; The first buffer spring is limited between the first left spring screw sleeve and the first left spring limiting sleeve, and the first pre-compression spring is limited between the second left spring screw sleeve and the second left spring limiting sleeve; The elastic coefficient of the first pre-compression spring is smaller than the elastic coefficient of the first buffer spring; The upper part of the right roller bracket is connected with a right buffer linkage mechanism, the upper part of the right buffer linkage mechanism is connected to the right end of the tension roller, and the lower part of the right buffer linkage mechanism is positioned and connected to the right frame; the transition roller is located below the tension roller, and the two ends of the transition roller are connected to the lower part of the left roller bracket and the lower part of the right roller bracket through bearings; The right buffer linkage mechanism includes a right tension swing assembly and a right swing buffer assembly, and the right tension swing assembly includes a right tension bracket and a second swing arm; The middle part of the right tension bracket is rotatably connected to the right roller bracket through the second tension support shaft assembly, the right tension bracket is rotatably connected to the upper part of the second swing arm through the second swing arm support shaft assembly, and the rear end of the right tension bracket is connected to the right roller bracket through the right tension connecting rod assembly; The middle part of the second swing arm is rotatably connected to the right end of the tension roller through the second swing arm bearing; the lower part of the second swing arm is connected to the right swing buffer assembly; The right swing buffer assembly comprises a right buffer connecting rod and a right buffer mounting plate, wherein the right buffer connecting rod is rotatably connected to the lower part of the second swing arm through a second connecting rod shaft pin; The right buffer mounting plate is fixedly connected to the right end surface of the right frame by bolts, and the outer end bolts of the right buffer mounting plate are connected to the right swing frame seat; The right buffer connecting rod passes through the right swing frame seat, the rear portion of the right buffer connecting rod is positioned and connected with a second pre-compression spring, the front portion of the right buffer connecting rod is positioned and connected with a second buffer spring, and the second buffer spring and the second pre-compression spring are respectively located on both sides of the right swing frame seat; The front and rear parts of the right buffer connecting rod are respectively connected with a first right spring screw sleeve and a second right spring screw sleeve; A second swing frame through hole for the right buffer connecting rod to pass through is provided in the right swing frame seat, and a first right spring limiting shaft sleeve and a second right spring limiting shaft sleeve are respectively provided in the front part and the rear part of the second swing frame through hole; The second buffer spring is limited between the first right spring screw sleeve and the first right spring limiting shaft sleeve, and the second pre-compression spring is limited between the second right spring screw sleeve and the second right spring limiting shaft sleeve; The elastic coefficient of the second pre-compression spring is smaller than the elastic coefficient of the second buffer spring.

2. A tension control device suitable for light fabrics according to claim 1, characterized in that: The left frame is provided with a plurality of first frame mounting holes, the left lifting support is connected to the left frame through the first frame mounting holes, and the left lifting support is adjusted to an installation position in the up-and-down direction through the first frame mounting holes on the left frame; The right rack is provided with a plurality of second rack mounting holes, the right lifting support is connected to the right rack through the second rack mounting holes, and the right lifting support adjusts the installation position in the up and down directions through the second rack mounting holes on the right rack.

3. A tension control device suitable for light fabrics according to claim 1, characterized in that: A first strip-shaped mounting slot is provided on the side wall of the left lifting support, and the left roller bracket is positioned and connected to the left lifting support through the first strip-shaped mounting slot by using bolts, and the installation position of the left roller bracket in the front-rear direction can be adjusted through the first strip-shaped mounting slot; A second strip-shaped mounting slot is provided on the side wall of the right lifting support, and the right roller bracket is positioned and connected to the right lifting support by bolts through the second strip-shaped mounting slot; the right roller bracket can adjust the installation position in the front-rear direction through the second strip-shaped mounting slot.

4. A tension control device suitable for light fabrics according to claim 3, characterized in that: A first position positioning scale line is arranged on the outer wall of the left lifting support above the first strip-shaped installation slot hole; a second position positioning scale line is arranged on the outer wall of the right lifting support above the second strip-shaped installation slot hole.

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