Rapier transmission mechanism of rapier loom

Abstract

The rapier transmission mechanism comprises a rapier transmission wheel, a connecting shaft and a rapier belt, the rapier transmission wheel is connected with the connecting shaft through a bearing, a plurality of evenly-distributed convex teeth are arranged on the circumferential side of the rapier transmission wheel, a plurality of evenly-distributed tooth holes are formed in the surface of the rapier belt, the rapier belt bypasses the rapier transmission wheel so that the convex teeth can be inserted into the tooth holes, and a fixing support is fixed to the outer side of the connecting shaft. The rapier conveying wheel is located in the fixing support, belt pressing mechanisms are arranged on the upper side and the lower side in the fixing support respectively and located on the circumferential side of the rapier conveying wheel, each belt pressing mechanism comprises a rolling wheel, and the rolling wheels abut against the surface of the rapier belt so that the rapier belt can be tightly attached to the surface of the rapier conveying wheel. The belt pressing mechanism is arranged on the peripheral side of the rapier conveying wheel and can pressurize the rapier belt, so that the rapier belt and the rapier conveying wheel are matched more reliably, and the rapier belt is prevented from slipping.

Description

Technical Field

[0001] The utility model relates to the technical field of rapier looms, and more specifically, to a rapier transmission mechanism of a rapier loom. Background Art

[0002] The rapier loom is the most widely used shuttleless loom. In addition to the characteristics of high speed, high degree of automation and high efficiency of production of shuttleless looms, its active weft insertion method has strong variety adaptability and can adapt to the weft insertion of various types of yarns. The connection between the rapier wheel and the rapier belt in the existing gear transmission mechanism is simply connected by the tooth groove. Since the rapier belt itself has a certain flexibility and elasticity, when the rapier belt turns through the rapier wheel, it may cause slippage between the rapier wheel and the rapier belt under high-speed movement, affecting the normal operation of the rapier loom. Therefore, it is urgently needed to improve this. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a rapier loom's sword transmission mechanism, which can pressurize the rapier belt by arranging a belt pressing mechanism on the circumference of the rapier transmission wheel, so that the rapier belt and the rapier transmission wheel cooperate more reliably and prevent the rapier belt from slipping.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a sword transmission mechanism of a rapier loom, comprising a sword transmission wheel, a connecting shaft and a sword belt, wherein the sword transmission wheel is connected to the connecting shaft through a bearing, a plurality of evenly distributed convex teeth are arranged on the circumference of the sword transmission wheel, a plurality of evenly distributed tooth holes are arranged on the surface of the sword belt, the sword belt passes around the sword transmission wheel so that the convex teeth are inserted into the tooth holes, and is characterized in that a fixed bracket is fixed on the outer side of the connecting shaft, the sword transmission wheel is located in the fixed bracket, a belt pressing mechanism is respectively arranged on the upper and lower sides of the fixed bracket, the belt pressing mechanism is located on the circumference of the sword transmission wheel, and the belt pressing mechanism comprises a roller, and the roller abuts against the surface of the sword belt so that the sword belt is tightly attached to the surface of the sword transmission wheel.

[0006] Furthermore, the belt pressing mechanism includes a wheel frame, the roller is located in the wheel frame, and the roller is connected to the wheel frame via a rotating shaft.

[0007] Furthermore, a fastener is connected to the end of the fixed bracket, a spring is provided between the fastener and the wheel frame, protrusions are provided on both sides of the wheel frame, and a guide groove cooperating with the protrusion is provided on the inner wall of the fixed bracket. The protrusion is inserted into the guide groove, and the belt pressing mechanism can move along the guide groove to compress the spring, and the fastener can move to compress the spring.

[0008] Furthermore, an annular rib is provided on one side of the wheel frame away from the roller, an annular cover is provided on the end of the fastener located inside the fixed bracket, and both ends of the spring are respectively located in the annular rib and the annular cover.

[0009] Furthermore, the roller includes a wheel column, which is connected to the rotating shaft through a bearing, two wheel sleeves are fixed on the outside of the wheel column, the convex teeth are located between the two wheel sleeves, the circumferential surface of the wheel sleeve abuts against the surface of the sword belt, and the diameter of the wheel column is smaller than the diameter of the wheel sleeve.

[0010] Furthermore, the wheel sleeve is made of Teflon.

[0011] Furthermore, two belt pressing mechanisms connected to the fixed bracket are symmetrically arranged along the axis of the sword transmission wheel.

[0012] Furthermore, a movable bracket is connected to the outer side of the connecting shaft, and the movable bracket is connected to the connecting shaft by bolts. A belt pressing mechanism is also provided inside the movable bracket, and the belt pressing mechanism located on the movable bracket can abut against the surface of the sword belt.

[0013] The beneficial effects of the utility model are:

[0014] 1. When the sword belt is being transmitted, the roller can rotate. By setting two belt pressing mechanisms in the fixed bracket, the input end and output end of the sword belt can be pressurized respectively when the sword belt is being transmitted, which not only makes the sword belt and the sword transmission wheel cooperate more reliably, prevents the sword belt from slipping, and improves the service life of the sword belt, but also by setting the roller, it can effectively reduce the friction force generated by the belt pressing mechanism on the surface of the sword belt, reducing the wear of the surface of the sword belt;

[0015] 2. The fastener and the belt pressing mechanism are connected in a separate manner, and the belt pressing mechanism can move along the guide groove by setting a spring and cooperating with the protrusion and the guide groove. When the sword wheel is transmitting the sword belt, the pressure of the roller on the sword belt is the elastic force of the spring. When the circularity of the sword wheel is not high, the spring can play a buffering role to prevent the pressure of the roller on the sword belt from being too large or too small. By rotating the fastener, the distance between the lower end of the fastener and the wheel frame and the elastic force of the spring can be adjusted, and finally the pressure of the roller on the surface of the sword belt can be adjusted, which effectively improves the reliability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural schematic diagram of this embodiment;

[0017] Figure 2 is a cross-sectional view of this embodiment;

[0018] Figure 3 for Figure 2 A partial schematic diagram of .

[0019] Figure numerals: 1, sword wheel; 11, convex teeth; 12, connecting shaft; 2, sword belt; 21, tooth hole; 3, fixed bracket; 31, guide groove; 4, belt pressing mechanism; 5, roller; 51, wheel column; 52, wheel sleeve; 6, wheel frame; 61, protrusion; 62, rotating shaft; 63, annular convex rib; 7, fastener; 71, annular cover; 8, spring; 9, movable bracket; 91, connecting sleeve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figures 1 to 3 As shown, a sword transmission mechanism of a rapier loom comprises a sword transmission wheel 1, a connecting shaft 12 and a sword belt 2, wherein the sword transmission wheel 1 is connected to the connecting shaft 12 through a bearing, a plurality of evenly distributed convex teeth 11 are arranged on the circumference of the sword transmission wheel 1, a plurality of evenly distributed tooth holes 21 are arranged on the surface of the sword belt 2, the sword belt 2 passes around the sword transmission wheel 1 so that the convex teeth 11 are inserted into the tooth holes 21, and the sword transmission wheel 1 rotates clockwise, a fixed bracket 3 is fixed on the outer side of the connecting shaft 12, the sword transmission wheel 1 is located in the fixed bracket 3, and a belt pressing mechanism 4 is respectively arranged on the upper and lower sides of the fixed bracket 3, the belt pressing mechanism 4 is located on the circumference of the sword transmission wheel 1, and the belt pressing mechanism 4 comprises a roller 5, and the roller 5 abuts against the surface of the sword belt 2 to The sword belt 2 is made to be in close contact with the surface of the sword transmission wheel 1. The two belt pressing mechanisms 4 connected to the fixed bracket 3 are symmetrically arranged along the axis of the sword transmission wheel 1. The two belt pressing mechanisms 4 are respectively located on the upper and lower sides of the sword transmission wheel 1, that is, located at the input end and the output end of the sword belt 2. When the sword belt 2 is being transmitted, the roller 5 can rotate. By arranging two belt pressing mechanisms 4 in the fixed bracket 3, when the sword belt 2 is being transmitted, the input end and the output end of the sword belt 2 can be pressurized respectively, which not only makes the cooperation between the sword belt 2 and the sword transmission wheel 1 more reliable, prevents the sword belt 2 from slipping, and improves the service life of the sword belt 2, but also by arranging the roller 5, the friction force generated by the belt pressing mechanism 4 on the surface of the sword belt 2 can be effectively reduced, thereby reducing the wear on the surface of the sword belt 2.

[0022] The belt pressing mechanism 4 includes a wheel frame 6, and the roller 5 is located in the wheel frame 6. The roller 5 is connected to the wheel frame 6 through a rotating shaft 62. The roller 5 includes a wheel column 51. The wheel column 51 is connected to the rotating shaft 62 through a bearing. Two wheel sleeves 52 are fixed to the outer side of the wheel column 51. The convex tooth 11 is located between the two wheel sleeves 52. The circumferential surface of the wheel sleeve 52 abuts against the surface of the sword belt 2. The diameter of the wheel column 51 is smaller than the diameter of the wheel sleeve 52. The wheel sleeve 52 is made of Teflon. The wheel column 51 and the wheel sleeve 52 are connected by bolts. By setting the wheel sleeve 52 made of Teflon, not only the material strength is high, but also it has self-lubricating properties, which can reduce the wear on the surface of the sword belt 2. The diameter of the wheel sleeve 52 is larger than the diameter of the wheel column 51, which can avoid the convex tooth 11.

[0023] The end of the fixed bracket 3 is connected to a fastener 7, a spring 8 is provided between the fastener 7 and the wheel frame 6, and bumps 61 are provided on both sides of the wheel frame 6. The inner wall of the fixed bracket 3 is provided with a guide groove 31 that cooperates with the bump 61, and the bump 61 is inserted into the guide groove 31. The belt pressing mechanism 4 can move along the guide groove 31 to compress the spring 8, and the fastener 7 can move to compress the spring 8. The fastener 7 is connected to the fixed bracket 3 by a thread, and the fastener 7 is connected to the belt pressing mechanism 4 in a separate manner, and by setting the spring 8 and The cooperation between the protrusion 61 and the guide groove 31 enables the belt pressing mechanism 4 to move along the guide groove 31. When the sword wheel 1 is transmitting the sword belt 2, the pressure of the roller 5 on the sword belt 2 is the elastic force of the spring 8. When the circumference of the sword wheel 1 is not high, the spring 8 can play a buffering role to prevent the roller 5 from exerting too much or too little pressure on the sword belt 2. By rotating the fastener 7, the distance between the lower end of the fastener 7 and the wheel frame 6 and the elastic force of the spring 8 can be adjusted, and finally the pressure of the roller 5 on the surface of the sword belt 2 can be adjusted, thereby effectively improving the reliability of the structure.

[0024] The wheel frame 6 is provided with an annular rib 63 on the side away from the roller 5, and the end of the fastener 7 located inside the fixed bracket 3 is provided with an annular cover 71. The two ends of the spring 8 are respectively located in the annular rib 63 and the annular cover 71. By providing the annular rib 63 and the annular cover 71, the spring 8 can be limited to prevent it from falling off.

[0025] A movable bracket 9 is connected to the outside of the connecting shaft 12, and the movable bracket 9 is connected to the connecting shaft 12 by bolts. A belt pressing mechanism 4 is also provided inside the movable bracket 9. The belt pressing mechanism 4 located on the movable bracket 9 can abut against the surface of the sword belt 2. The connection structure between the movable bracket 9 and the belt pressing mechanism 4 is consistent with the connection structure between the fixed bracket 3 and the belt pressing mechanism 4.

[0026] The movable bracket 9 includes a connecting sleeve 91, which is sleeved on the outside of the connecting shaft 12 and connected to the connecting shaft 12 by bolts. The movable bracket 9 can rotate along the connecting shaft 12. By rotating the movable bracket 9, the position of the belt pressure mechanism 4 in the movable bracket 9 can be adjusted, thereby adjusting the pressure position on the surface of the sword belt 2, making the transmission of the sword belt 2 more reliable.

[0027] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A rapier loom's rapier mechanism, comprising a rapier wheel (1), a connecting shaft (12) and a rapier belt (2), wherein the rapier wheel (1) is connected to the connecting shaft (12) via a bearing, a plurality of evenly distributed convex teeth (11) are arranged on the circumference of the rapier wheel (1), a plurality of evenly distributed tooth holes (21) are arranged on the surface of the rapier belt (2), the rapier belt (2) bypasses the rapier wheel (1) so that the convex teeth (11) are inserted into the tooth holes (21), and the characteristics are as follows: A fixed bracket (3) is fixed on the outside of the connecting shaft (12), the sword transmission wheel (1) is located in the fixed bracket (3), and a belt pressing mechanism (4) is respectively provided at the upper and lower sides of the fixed bracket (3), the belt pressing mechanism (4) is located on the peripheral side of the sword transmission wheel (1), and the belt pressing mechanism (4) includes a roller (5), and the roller (5) abuts against the surface of the sword belt (2) so that the sword belt (2) is closely attached to the surface of the sword transmission wheel (1).

2. The rapier transmission mechanism of a rapier loom according to claim 1, characterized in that: The belt pressing mechanism (4) comprises a wheel frame (6), the roller (5) is located in the wheel frame (6), and the roller (5) is connected to the wheel frame (6) via a rotating shaft (62).

3. The rapier transmission mechanism of a rapier loom according to claim 2, characterized in that: The end of the fixed bracket (3) is connected to a fastener (7), a spring (8) is provided between the fastener (7) and the wheel frame (6), protrusions (61) are provided on both sides of the wheel frame (6), the inner wall of the fixed bracket (3) is provided with a guide groove (31) that cooperates with the protrusion (61), the protrusion (61) is inserted into the guide groove (31), the belt pressing mechanism (4) can move along the guide groove (31) to compress the spring (8), and the fastener (7) can move to compress the spring (8).

4. The rapier transmission mechanism of a rapier loom according to claim 3, characterized in that: A side of the wheel frame (6) away from the roller (5) is provided with an annular convex rib (63), an end of the fastener (7) located inside the fixed bracket (3) is provided with an annular cover (71), and two ends of the spring (8) are respectively located in the annular convex rib (63) and the annular cover (71).

5. The rapier transmission mechanism of a rapier loom according to claim 2, characterized in that: The roller (5) comprises a wheel column (51), the wheel column (51) is connected to a rotating shaft (62) via a bearing, two wheel sleeves (52) are fixed to the outside of the wheel column (51), the convex tooth (11) is located between the two wheel sleeves (52), the circumferential surface of the wheel sleeve (52) abuts against the surface of the sword belt (2), and the diameter of the wheel column (51) is smaller than the diameter of the wheel sleeve (52).

6. The rapier transmission mechanism of a rapier loom according to claim 5, characterized in that: The wheel sleeve (52) is made of Teflon material.

7. The rapier transmission mechanism of a rapier loom according to claim 1, characterized in that: Two belt pressing mechanisms (4) connected to the fixed bracket (3) are symmetrically arranged along the axis of the sword transmission wheel (1).

8. The rapier transmission mechanism of a rapier loom according to claim 1, characterized in that: A movable bracket (9) is connected to the outside of the connecting shaft (12), and the movable bracket (9) is connected to the connecting shaft (12) by bolts. A belt pressing mechanism (4) is also provided inside the movable bracket (9), and the belt pressing mechanism (4) located on the movable bracket (9) can abut against the surface of the sword belt (2).

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