A pre-tensioning system for a net weaving machine

Abstract

The present invention provides a pre-drawing tensioning system for a weaving machine, comprising two sets of tensioning brackets mounted on a machine frame, a main shaft mounted between the lower portions of the two sets of tensioning brackets, a first tension-adjusting roller and a second tension-adjusting roller mounted above and in front of the main shaft, a threading plate mounted between the two sets of tensioning brackets directly above the main shaft, a pre-drawing drive shaft mounted between the two sets of tensioning brackets behind the threading plate, a warp pre-drawing roller mounted above the pre-drawing drive shaft, a pre-drawing power assembly mounted outside the tensioning brackets, the end of the pre-drawing drive shaft contracted to form a transmission shaft, the transmission shaft passing through the tensioning brackets and connected to the pre-drawing power assembly. The adoption of this solution results in a reasonable structure and good tensioning effect.

Description

Technical Field

[0001] The present invention relates to the technical field of fishing nets, in particular to a pre-drawing and tensioning system for a net weaving machine. Background Art

[0002] The upper and lower tension adjustment rollers of traditional mesh weaving machines are adjusted by screws and springs. When the spring is adjusted, a certain pulling force will always be generated on the adjusting roller. If the pulling force is not well controlled, it will easily cause the mesh line to break or be over-tensioned, affecting the guidance and output of the mesh line. At the same time, the warp pre-drawing roller and the tension adjustment roller are relatively slender, and the middle part is prone to sinking and deformation during use, resulting in a short service life of the warp pre-drawing roller and the tension adjustment roller. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a pre-tensioning system for a weaving machine with a reasonable structure and good tensioning effect.

[0004] To achieve the above-mentioned purpose, the technical solution provided by the present invention is: a pre-drawing tensioning system for a weaving machine, which includes two groups of tensioning brackets installed on a frame, a main shaft is installed between the lower parts of the two groups of tensioning brackets, a first tension adjusting roller and a second tension adjusting roller are installed above the front side of the main shaft, a yarn feeding plate is installed between the two groups of tensioning brackets directly above the main shaft, a pre-drawing drive shaft is installed between the two groups of tensioning brackets on the rear side of the yarn feeding plate, a warp pre-drawing roller is installed above the pre-drawing drive shaft, a pre-drawing power assembly is installed on the outside of the tensioning bracket, the end of the pre-drawing drive shaft is contracted to form a transmission shaft, and the transmission shaft passes through the tensioning bracket and is connected to the pre-drawing power assembly.

[0005] A tension roller support assembly is installed on the frame between the two groups of tensioning brackets, and the tension roller support assembly includes a tensioning support seat, a polyurethane roller, a tensioning middle slider, a middle slider cover, and a tensioning middle upper cover, wherein the bottom of the tensioning support seat is fixed on the frame, the rear end of the tensioning support seat extends upward to form a support column, the upper front part of the support column expands to form a guide rail, the rear side of the tensioning middle slider is provided with a guide groove, the guide groove is also engaged with the guide rail, the top of the tensioning middle slider is provided with an middle slider cover, the top of the support column is provided with a tensioning middle upper cover, a tensioning adjusting screw is meshed on the tensioning middle upper cover, the top of the tensioning adjusting screw is connected to a tensioning handle, the bottom of the tensioning adjusting screw is downwardly connected to the top of the middle slider cover, and the top of the tensioning middle slider is provided with a first tension hole, The first tension hole is equipped with a first tension bearing ring; there are two second tension adjustment rollers and first tension adjustment rollers, which are respectively located on both sides of the tensioning middle slider. One end of the first tension adjustment roller is equipped with the first tension bearing ring, and the other end is equipped with the corresponding tensioning bracket. A long second tension hole is provided at the lower part of the tensioning middle slider, and the second tension holes are distributed along the vertical direction of the tensioning middle slider. One end of the second tension adjustment roller is movably equipped with the second tension hole, and the other end is equipped with the corresponding tensioning bracket; the support column under the guide rail is recessed backward to form a main shaft transition groove, and polyurethane rollers are installed on the support columns in the middle and bottom of the main shaft transition groove. The middle of the main shaft is located in the main shaft transition groove, and the wheel surfaces of the polyurethane rollers are respectively in contact with the rear side and the outer peripheral surface of the bottom of the main shaft.

[0006] There are two yarn threading plates, which are located on both sides of the tensioning support seat. One end of the yarn threading plate is connected to the upper rear part of the tensioning support seat, and the other end is connected to the corresponding tensioning bracket. There are several yarn threading holes evenly distributed on the yarn threading plate along the length direction of the plate body.

[0007] The pre-extraction power assembly includes a pre-extraction motor mounting frame, a pre-extraction bearing seat, and a pre-extraction reducer, wherein the pre-extraction motor mounting frame is installed on the outside of the tensioning bracket, the pre-extraction bearing seat is installed on the tensioning bracket inside the pre-extraction motor mounting frame, and the pre-extraction reducer is installed on the outside of the motor mounting frame 20. The pre-extraction reducer is driven by the corresponding pre-extraction motor, and the end of the pre-extraction drive shaft passes through the pre-extraction bearing seat and is connected to the output shaft of the pre-extraction reducer.

[0008] The frame between the two sets of tensioning brackets is equipped with a number greater than 2 support plates, and the two ends of the bottom of the support plate extend horizontally outward to form a fixed block, which is connected to the frame, and the center of the top of the support plate protrudes upward to form an intermediate reinforcement platform, and a yarn threading plate support frame is installed on the top of the intermediate reinforcement platform. The upper part of the yarn threading plate support frame is connected to the yarn threading plate, and the end of the support plate on the rear side of the intermediate reinforcement platform extends vertically upward to form a support arm, and the top of the support arm is horizontally bent toward the rear side to form a connecting arm, and the upper part of the support arm protrudes toward the yarn threading plate support frame to form a bearing platform, and a pre-extraction bearing seat is installed on the bearing platform, and the pre-extraction bearing seat is sleeved with the pre-extraction drive shaft.

[0009] The bottom two sides of the tensioning bracket are extended to form connecting blocks, which are connected to the frame through bracket bolts. The top of the tensioning bracket is concave to form a U-shaped sliding limit slot, and a tensioning end slider is movably installed in the sliding limit slot. The upper part of the tensioning end slider is provided with a penetrating upper tension adjustment roller shaft hole, and the lower part of the tensioning end slider is provided with a long strip of lower tension adjustment roller shaft hole. The lower tension adjustment roller shaft hole is distributed along the vertical direction of the tensioning end slider. The top of the tensioning end slider is connected to the end slider cover plate through slider bolts, and the tensioning side upper cover is installed on the tensioning bracket at the top of the sliding limit slot, and the tensioning side upper cover is provided with screw holes penetrating up and down, and a tensioning stud is meshed in the screw hole. The top of the tensioning stud is connected to the handwheel upward, and the bottom of the tensioning stud is connected to the end slider cover plate downward. The first tension adjusting roller is sleeved in the upper tension adjusting roller shaft hole, and the second tension adjusting roller is movably sleeved in the lower tension adjusting roller shaft hole.

[0010] The middle part of the pre-extraction drive shaft is provided with a warp pre-extraction connecting rod, the top of the warp pre-extraction connecting rod is provided with a sleeve hole, and the sleeve hole is provided with an oil-free bushing. There are two warp pre-extraction rollers, which are respectively located on both sides of the warp pre-extraction connecting rod. One end of the warp pre-extraction roller is provided in the oil-free bushing, and the other end is provided in the top of the warp end connecting rod. The bottom of the warp end connecting rod is connected to the end of the pre-extraction drive shaft.

[0011] After adopting the above-mentioned scheme, the present invention uses the pre-drawing power component to drive the pre-drawing drive shaft to move back and forth in an arc shape (up and forward), thereby pre-drawing the warp of the weaving machine. After the warp passes through the yarn feeding plate and between the first tension adjustment roller and the second tension adjustment roller, it bypasses the second tension adjustment roller, rotates around the main shaft, and is output. The structure after adopting this scheme is reasonable and the tensioning effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0013] Figure 2 It is a schematic diagram of the tensioning bracket structure of the present invention.

[0014] Figure 3 This is a schematic diagram of the distribution of the tensioning brackets of the present invention.

[0015] Figure 4 It is a schematic diagram of the support plate structure of the present invention. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with all the accompanying drawings. The preferred embodiments of the present invention are as follows: Figure 1 To the attached Figure 4The pre-drawing tensioning system of a weaving machine described in this embodiment includes two sets of tensioning brackets 32 mounted on a frame. A main shaft is mounted between the lower parts of the two sets of tensioning brackets 32. A first tension-adjusting roller 34 and a second tension-adjusting roller 35 are mounted above the front of the main shaft. A threading plate 3 is mounted between the two sets of tensioning brackets 32 directly above the main shaft. A pre-drawing drive shaft 2 is mounted between the two sets of tensioning brackets 32 behind the threading plate 3. A warp pre-drawing roller 1 is mounted above the pre-drawing drive shaft 2. A pre-drawing power assembly is mounted outside the tensioning bracket 32. The end of the pre-drawing drive shaft 2 is contracted to form a transmission shaft, which passes through the tensioning bracket 32 ​​and is connected to the pre-drawing power assembly. There are two threading plates 3, each located on either side of a tensioning support 45. One end of the threading plate 3 is connected to the upper rear part of the tensioning support 45, and the other end is connected to the corresponding tensioning bracket 32. The threading plate 3 has a plurality of threading holes evenly distributed along the length of the plate. A number greater than 2 support plates 4 are installed on the frame between the two sets of tensioning brackets 32. The two ends of the bottom of the support plate 4 extend horizontally outward to form a fixed block, which is connected to the frame. The center of the top of the support plate 4 protrudes upward to form an intermediate reinforcement platform. A yarn threading plate support frame is installed on the top of the intermediate reinforcement platform. The upper part of the yarn threading plate support frame is connected to the yarn threading plate 3. The end of the support plate 4 on the rear side of the intermediate reinforcement platform extends vertically upward to form a support arm, and the top of the support arm is horizontally bent toward the rear to form a connecting arm. The upper part of the support arm protrudes toward the yarn threading plate support frame to form a bearing platform. A pre-extraction bearing seat 8 is installed on the bearing platform, and the pre-extraction bearing seat 8 is fitted with the pre-extraction drive shaft 2.

[0017] A tension roller support assembly is installed on the frame between the two sets of tensioning brackets 32, and the tension roller support assembly includes a tensioning support seat 45, a polyurethane roller 46, a tensioning intermediate slider 47, an intermediate slider cover 48, and a tensioning intermediate upper cover 49, wherein the bottom of the tensioning support seat 45 is fixed on the frame, the rear end of the tensioning support seat 45 extends upward to form a support column, the upper front part of the support column expands to form a guide rail, the rear side of the tensioning intermediate slider 47 is provided with a guide groove, the guide groove is also engaged with the guide rail, the top of the tensioning intermediate slider 47 is provided with an intermediate slider cover 48, the top of the support column is provided with a tensioning intermediate upper cover 49, a tensioning adjusting screw is engaged with the tensioning intermediate upper cover 49, the top of the tensioning adjusting screw is connected to a tensioning handle, the bottom of the tensioning adjusting screw is downwardly connected to the top of the intermediate slider cover 48, and the top of the tensioning intermediate slider 47 is provided with a first tension Hole, the first tension hole is equipped with a first tension bearing ring; there are two second tension adjustment rollers 35 and first tension adjustment rollers 34, which are respectively located on both sides of the tensioning middle slider 47. One end of the first tension adjustment roller 34 is mounted in the first tension bearing ring, and the other end is mounted in the corresponding tensioning bracket 32. A long strip of second tension hole is provided at the lower part of the tensioning middle slider 47. The second tension holes are distributed along the vertical direction of the tensioning middle slider 47. One end of the second tension adjustment roller 35 is movably mounted in the second tension hole, and the other end is mounted in the corresponding tensioning bracket 32; the support column below the guide rail is recessed backward to form a main shaft transition groove, and polyurethane rollers 46 are installed on the support columns in the middle and bottom of the main shaft transition groove. The middle of the main shaft is located in the main shaft transition groove, and the wheel surfaces of the polyurethane rollers 46 respectively conflict with the rear side and the outer peripheral surface of the bottom of the main shaft.

[0018] The pre-extraction power assembly includes a pre-extraction motor mounting frame 20, a pre-extraction bearing seat 19, and a pre-extraction reducer 22, wherein the pre-extraction motor mounting frame 20 is installed on the outside of the tensioning bracket 32, the pre-extraction bearing seat 19 is installed on the tensioning bracket 32 ​​inside the pre-extraction motor mounting frame 20, and the pre-extraction reducer 22 is installed on the outside of the motor mounting frame 20. The pre-extraction reducer 22 is driven by the corresponding pre-extraction motor, and the end of the pre-extraction drive shaft 2 passes through the pre-extraction bearing seat 19 and is connected to the output shaft of the pre-extraction reducer 22.

[0019] The two sides of the bottom of the tensioning bracket 32 ​​are extended to form a connecting block, and the connecting block is connected to the frame through the bracket bolts. The top of the tensioning bracket 32 ​​is concave to form a U-shaped sliding limit groove 30. The tensioning end slider 29 is movably installed in the sliding limit groove 30. The upper part of the tensioning end slider 29 is provided with a through upper tension adjustment roller shaft hole 57, and the lower part of the tensioning end slider 29 is provided with a long strip of lower tension adjustment roller shaft hole 58. The lower tension adjustment roller shaft hole 58 is distributed in the vertical direction of the tensioning end slider 29. The top of the tensioning end slider 29 is provided with a through hole 57. The slider bolt 17 is connected to the end slider cover 28, and the tensioning side upper cover 16 is installed on the tensioning bracket 32 ​​at the top of the sliding limit groove 30. The tensioning side upper cover 16 is provided with a screw hole running through the upper and lower parts, and the tensioning stud 14 is engaged in the screw hole. The top of the tensioning stud 14 is connected to the handwheel 12 upward, and the bottom of the tensioning stud 14 is connected to the end slider cover 28 downward. The first tension adjustment roller 34 is sleeved in the upper tension adjustment roller shaft hole 57, and the second tension adjustment roller 35 is movably sleeved in the lower tension adjustment roller shaft hole 58.

[0020] A warp pre-extraction connecting rod 54 is mounted in the middle of the pre-extraction driving shaft 2. A sleeve hole is provided on the top of the warp pre-extraction connecting rod 54, and an oil-free bushing 55 is mounted in the sleeve hole. There are two warp pre-extraction rollers 1, which are respectively located on both sides of the warp pre-extraction connecting rod 54. One end of the warp pre-extraction roller 1 is mounted in the oil-free bushing 55, and the other end is mounted on the top of the warp end connecting rod 9. The bottom of the warp end connecting rod 9 is connected to the end of the pre-extraction driving shaft 2.

[0021] The pre-drawing power assembly drives the pre-drawing drive shaft to move back and forth in an arc shape (up and forward), thereby pre-drawing the warp of the weaving machine. After the warp passes through the threading plate and between the first tension-adjusting roller and the second tension-adjusting roller, it bypasses the second tension-adjusting roller, rotates around the main shaft and is output. The overall height of the tensioning end slider and the tensioning middle slider is adjusted by rotating the handwheel / handle, so that the first tension-adjusting roller and the second tension-adjusting roller rise or fall synchronously. The long lower tension-adjusting roller shaft hole and the second tension hole are used to allow the second tension-adjusting roller to slide freely up and down in the lower tension-adjusting roller shaft hole and the second tension hole (capable of adapting to the tension of the network cable), thereby preventing the network cable from being broken or over-tensioned, and always tensioning the network cable.

[0022] The use of an extended fixing block at the bottom of the tensioning bracket can strengthen the bottom strength and is also more convenient to install (only 5cm bolts are required for connection). The one-piece structure makes the support component more integrated and stronger; the middle reinforcement platform and bearing platform are relatively thicker, making the installation of the bearing and the yarn threading plate support frame more stable. The pre-extraction drive shaft is installed in the bearing seat to prevent the pre-extraction drive shaft from sinking and deformation. The combined bearing seat and yarn threading plate support frame are easy to replace and maintain.

[0023] The warp pre-drawing roller and tension adjustment roller are both composed of two pieces. This method can effectively prevent them from sinking and deformation, thereby greatly reducing the maintenance frequency and the service life is more than 5 times that of the traditional ones.

[0024] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any changes made based on the shape and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pre-tensioning system for a web weaving machine, comprising two sets of tensioning brackets (32) mounted on a frame, a main shaft being mounted between the lower portions of the two sets of tensioning brackets (32), and characterized in that: A first tension adjustment roller (34) and a second tension adjustment roller (35) are installed above the front side of the main shaft, a yarn threading plate (3) is installed between the two sets of tensioning brackets (32) directly above the main shaft, a pre-drawing drive shaft (2) is installed between the two sets of tensioning brackets (32) on the rear side of the yarn threading plate (3), a warp pre-drawing roller (1) is installed above the pre-drawing drive shaft (2), a pre-drawing power assembly is installed outside the tensioning bracket (32), the end of the pre-drawing drive shaft (2) is contracted to form a transmission shaft, and the transmission shaft passes through the tensioning bracket (32) and is connected to the pre-drawing power assembly; A tension roller support assembly is installed on the frame between the two sets of tensioning brackets (32), and the tension roller support assembly includes a tensioning support seat (45), a polyurethane roller (46), a tensioning intermediate slider (47), an intermediate slider cover (48), and a tensioning intermediate upper cover (49), wherein the bottom of the tensioning support seat (45) is fixed on the frame, the rear end of the tensioning support seat (45) extends upward to form a support column, the upper front part of the support column expands to form a guide rail, the rear side of the tensioning intermediate slider (47) is provided with a guide groove, and the guide groove is also engaged with the guide rail, the top of the tensioning intermediate slider (47) is provided with an intermediate slider cover (48), the top of the support column is provided with a tensioning intermediate upper cover (49), a tensioning adjustment screw is engaged with the tensioning intermediate upper cover (49), the top of the tensioning adjustment screw is connected to a tensioning handle, the bottom of the tensioning adjustment screw is downwardly connected to the top of the intermediate slider cover (48), and the top of the tensioning intermediate slider (47) is provided with a tensioning adjustment screw. a first tension hole, wherein a first tension bearing ring is mounted in the first tension hole; two second tension adjustment rollers (35) and first tension adjustment rollers (34) are respectively located on both sides of the tensioning intermediate slider (47); one end of the first tension adjustment roller (34) is mounted in the first tension bearing ring, and the other end is mounted in the corresponding tension bracket (32); a long strip-shaped second tension hole is provided at the lower portion of the tensioning intermediate slider (47); the second tension holes are distributed in the vertical direction of the tensioning intermediate slider (47); one end of the second tension adjustment roller (35) is movably mounted in the second tension hole, and the other end is mounted in the corresponding tension bracket (32); a support column below the guide rail is recessed backward to form a main shaft transition groove; polyurethane rollers (46) are mounted on the support columns in the middle and bottom of the main shaft transition groove; the middle of the main shaft is located in the main shaft transition groove; the wheel surfaces of the polyurethane rollers (46) respectively contact the rear side and the outer peripheral surface of the bottom of the main shaft; The pre-extraction power assembly includes a pre-extraction motor mounting frame (20), a pre-extraction bearing seat (19), and a pre-extraction reducer (22), wherein the pre-extraction motor mounting frame (20) is mounted on the outside of the tensioning bracket (32), the pre-extraction bearing seat (19) is mounted on the tensioning bracket (32) inside the pre-extraction motor mounting frame (20), and the pre-extraction reducer (22) is mounted on the outside of the pre-extraction motor mounting frame (20). The pre-extraction reducer (22) is driven by the corresponding pre-extraction motor, and the end of the pre-extraction drive shaft (2) passes through the pre-extraction bearing seat (19) and is connected to the output shaft of the pre-extraction reducer (22).

2. A pre-tensioning system for a net weaving machine according to claim 1, characterized in that: There are two yarn threading plates (3), which are respectively located on both sides of the tensioning support seat (45). One end of the yarn threading plate (3) is connected to the upper rear side of the tensioning support seat (45), and the other end is connected to the corresponding tensioning bracket (32). The yarn threading plate (3) has a plurality of yarn threading holes evenly distributed along the length direction of the plate body.

3. The pre-tensioning system for a net weaving machine according to claim 1, characterized in that: A number of support plates (4) greater than 2 are installed on the frame between the two sets of tensioning brackets (32), and both ends of the bottom of the support plate (4) extend horizontally outward to form a fixed block, which is connected to the frame. The center of the top of the support plate (4) protrudes upward to form an intermediate reinforcement platform, and a yarn-threading plate support frame is installed on the top of the intermediate reinforcement platform. The upper part of the yarn-threading plate support frame is connected to the yarn-threading plate (3), and the end of the support plate (4) on the rear side of the intermediate reinforcement platform extends vertically upward to form a support arm, and the top of the support arm is horizontally bent backward to form a connecting arm, and the upper part of the support arm protrudes toward the yarn-threading plate support frame to form a bearing platform, and a pre-extraction bearing seat (8) is installed on the bearing platform, and the pre-extraction bearing seat (8) is fitted with the pre-extraction drive shaft (2).

4. The pre-tensioning system for a net weaving machine according to claim 1, characterized in that: The bottom two sides of the tensioning bracket (32) are extended to form connecting blocks, which are connected to the frame through bracket bolts. The top of the tensioning bracket (32) is concave to form a U-shaped sliding limit groove (30). A tensioning end slider (29) is movably installed in the sliding limit groove (30). The upper part of the tensioning end slider (29) is provided with a through upper tension adjustment roller shaft hole (57). The lower part of the tensioning end slider (29) is provided with a long strip of lower tension adjustment roller shaft hole (58). The lower tension adjustment roller shaft hole (58) is distributed in the vertical direction of the tensioning end slider (29). The top of the tensioning end slider (29) is connected to the tensioning end slider (29) through the slider screw. The bolt (17) is connected to the end slider cover (28), and the tensioning side upper cover (16) is installed on the tensioning bracket (32) at the top of the sliding limit groove (30). The tensioning side upper cover (16) is provided with a screw hole running through the upper and lower parts, and a tensioning stud (14) is engaged in the screw hole. The top of the tensioning stud (14) is connected to the hand wheel (12) upward, and the bottom of the tensioning stud (14) is connected to the end slider cover (28) downward. The first tension adjusting roller (34) is sleeved in the upper tension adjusting roller shaft hole (57), and the second tension adjusting roller (35) is movably sleeved in the lower tension adjusting roller shaft hole (58).

5. The pre-tensioning system for a net weaving machine according to claim 1, characterized in that: A warp pre-extraction connecting rod (54) is sleeved in the middle of the pre-extraction driving shaft (2), a sleeve hole is provided on the top of the warp pre-extraction connecting rod (54), an oil-free bushing is sleeved in the sleeve hole, and two warp pre-extraction rollers (1) are respectively located on both sides of the warp pre-extraction connecting rod (54), one end of the warp pre-extraction roller (1) is sleeved in the oil-free bushing, and the other end is sleeved on the top of the warp end connecting rod (9), and the bottom of the warp end connecting rod (9) is connected to the end of the pre-extraction driving shaft (2).

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