Four-connecting-rod weft insertion and beating-up composite mechanism of rapier loom

Abstract

The utility model discloses a rapier loom four-connecting-rod weft insertion and beating-up composite mechanism, which belongs to the technical field of transmission mechanisms and comprises a four-connecting-rod weft insertion mechanism, a differential gear train and a four-connecting-rod beating-up mechanism, and the four-connecting-rod weft insertion mechanism comprises a weft insertion crank transmission gear, a weft insertion connecting rod and a weft insertion rocker. One end of the weft insertion connecting rod is connected with the weft insertion crank transmission gear, the other end of the weft insertion connecting rod is connected with the weft insertion rocker, and the other end of the weft insertion rocker is connected with the differential gear train; the four-connecting-rod beating-up mechanism comprises a crankshaft, a beating-up connecting rod and a beating-up rocker, one end of the crankshaft is fixedly connected with the weft insertion crank transmission gear, one end of the beating-up rocker is rotationally connected with one end of the beating-up connecting rod, and the other end of the beating-up rocker is connected with the differential gear train. The rapier driving device is compact in structure, parts are easy to manufacture and machine, the rapier driving wheel swings along with the batten, namely the beating-up rocker, relative movement is reduced, weft insertion time is relatively prolonged, and a rapier head can fly between sheds conveniently; the weft insertion requirement is met while the cost is relatively low.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission mechanisms, in particular to a four-link weft insertion and beating-up composite mechanism for a rapier loom. Background Art

[0002] At present, the weft insertion and beating-up mechanisms of rapier looms on the market generally adopt superimposed motion. The idle travel of the rapier head in the superimposed motion is too large, which increases the floor space of the loom and makes it difficult for the rapier head to enter the shed. To overcome this shortcoming, additional motion must be added to the weft insertion mechanism, which complicates the mechanism and is not suitable for high speed. It also increases the displacement, speed and acceleration of the weft insertion and beating-up mechanisms, making the design of the mechanism parts too bulky. At the same time, the length and timing of the weft insertion crank are also difficult to adjust. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a four-link weft insertion and beating-up composite mechanism for a rapier loom.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a four-link weft insertion and beating-up composite mechanism for a rapier loom, comprising a four-link weft insertion mechanism, a differential gear train and a four-link beating-up mechanism.

[0005] The four-link weft insertion mechanism comprises a weft insertion crank transmission gear, a weft insertion connecting rod and a weft insertion rocker, one end of the weft insertion connecting rod is connected to the weft insertion crank transmission gear, the other end is connected to the weft insertion rocker, and the other end of the weft insertion rocker is connected to the differential gear train;

[0006] The four-link beating mechanism comprises a crankshaft, a beating connecting rod and a beating rocker, wherein the two ends of the beating connecting rod are respectively provided with a first through hole and a second through hole, one end of the crankshaft passes through the first through hole and is fixedly connected to the weft insertion crank transmission gear, and the other end of the crankshaft is a free end;

[0007] One end of the beating rocker is rotatably connected to one end of the beating connecting rod provided with a second through hole, and the other end is connected to the differential gear train.

[0008] Furthermore, the differential gear train includes a ring gear fixed to the weft insertion rocker and a planetary carrier synchronized with the weft beating rocker.

[0009] Furthermore, a sun gear is provided at the center of the differential gear train, and a bevel gear set is provided in transmission connection with the sun gear.

[0010] Furthermore, the bevel gear set includes a first-stage active bevel gear and a second-stage driven bevel gear, the first-stage active bevel gear is coaxial with the sun gear; the second-stage driven bevel gear is coaxially connected to a sword wheel.

[0011] Furthermore, on the side of the tooth plate of the weft insertion crank transmission gear away from the crankshaft, a rotating disk and a crank length adjustment slider are detachably connected in sequence, and a mounting shaft is integrally formed on the crank length adjustment slider, and one end of the weft insertion connecting rod is sleeved on the mounting shaft to achieve connection.

[0012] Furthermore, a plurality of first mounting holes are provided on the crank length adjustment slider, and a plurality of second mounting holes are provided at corresponding positions of the rotating disk. The length adjustment bolts pass through the first mounting holes and the second mounting holes in sequence to detachably connect the crank length adjustment slider to the rotating disk; the distances between the plurality of second mounting holes and the center of the rotating disk are different.

[0013] Furthermore, a plurality of third mounting holes are provided on the rotating disk, and a plurality of fourth mounting holes are provided at corresponding positions of the tooth plate of the weft insertion crank transmission gear. The timing adjustment bolts pass through the third mounting holes and the fourth mounting holes in sequence to detachably connect the rotating disk to the weft insertion crank transmission gear; the plurality of third mounting holes are distributed in a ring shape along the center of the rotating disk.

[0014] Furthermore, a timing scale is provided on the outer ring of the weft insertion crank transmission gear.

[0015] Compared with the prior art, the utility model can achieve the following beneficial effects: compact structure, easy manufacturing and processing of parts, the sword wheel swings with the sley (beating rocker), reducing relative motion, relatively increasing the weft insertion time, and facilitating the sword head to fly between sheds; and meeting the weft insertion requirements at a relatively low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a first stereoscopic structural diagram of the four-link weft insertion and beating-up composite mechanism of the rapier loom of the utility model.

[0017] Figure 2 It is a second three-dimensional structural diagram of the four-link weft insertion and beating-up composite mechanism of the rapier loom of the utility model.

[0018] Figure 3 It is a structural diagram of the weft insertion crank transmission gear of the utility model.

[0019] Figure 4 The utility model is an installation structure diagram of the weft insertion crank transmission gear, the rotating disk and the crank length adjustment slider.

[0020] Among them: 1. weft insertion crank transmission gear; 2. weft insertion connecting rod; 3. weft insertion rocker; 4. differential gear system; 5. crankshaft; 6. weft beating connecting rod; 7. weft beating rocker; 8. first through hole; 9. second through hole; 10. first-stage active bevel gear; 11. second-stage driven bevel gear; 12. gear ring; 13. planet carrier; 14. sun gear; 15. sword transmission wheel; 16. timing scale; 17. rotating disk; 18. crank length adjustment slider; 19. mounting shaft; 20. first mounting hole; 21. second mounting hole; 22. third mounting hole; 23. fourth mounting hole. DETAILED DESCRIPTION

[0021] The following is attached to the instruction manual Figure 1-4 , the technical solution of the utility model is explained through specific embodiments.

[0022] Embodiment:

[0023] like Figure 1-4 As shown, the utility model provides a four-link weft insertion and beating-up composite mechanism for a rapier loom, comprising a four-link weft insertion mechanism, a gear train and a four-link weft beating-up mechanism.

[0024] The four-bar weft insertion mechanism includes a weft insertion crank transmission gear 1, a weft insertion connecting rod 2 and a weft insertion rocker 3. One end of the weft insertion connecting rod 2 is connected to the weft insertion crank transmission gear 1, and the other end is connected to the weft insertion rocker 3. The other end of the weft insertion rocker 3 is connected to the gear train.

[0025] The gear train comprises a differential gear train 4 and a two-stage bevel gear, and the weft insertion rocker 3 is connected to the differential gear train 4 .

[0026] The four-link beating mechanism comprises a crankshaft 5, a beating connecting rod 6 and a beating rocker 7. The two ends of the beating connecting rod 6 are respectively provided with a first through hole 8 and a second through hole 9. One end of the crankshaft 5 passes through the first through hole 8 and is fixedly connected to the weft insertion crank transmission gear 1, and the other end of the crankshaft 5 is a free end.

[0027] One end of the beating rocker 7 is rotatably connected to one end of the beating connecting rod 6 provided with the second through hole 9, and the other end is connected to the differential gear train 4.

[0028] The two-stage bevel gear includes a first-stage active bevel gear 10 and a second-stage driven bevel gear 11, and the differential gear train 4 includes a ring gear 12 fixed to the weft insertion rocker 3, a planet carrier 13 synchronized with the weft beating rocker 7, and a sun gear 14 coaxial with the first-stage active bevel gear 10. A sword transmission wheel 15 is coaxially connected to the second-stage driven bevel gear 11.

[0029] The ring gear 12 and the planet carrier 13 input in the same direction, the sun gear 14 outputs, and after the two-stage bevel gear transmission, the sword transmission wheel 15 and the second-stage driven bevel gear 11 rotate coaxially to realize the sword transmission and weft insertion movement. By replacing the two-stage bevel gears with different gear ratios, that is, the first-stage active bevel gear 10 and the second-stage driven bevel gear 11, the transmission ratio of the two-stage bevel gears can be changed to achieve the weft insertion requirements of fabrics with different widths.

[0030] The connecting rod weft insertion mechanism is composed of a weft insertion crank transmission gear 1 (motion input side), a weft insertion connecting rod 2, and a weft insertion rocker 3. The weft insertion crank makes a uniform rotational motion around the weft insertion crank transmission gear 1, so that the weft insertion rocker 3 swings periodically around the differential gear train 4. The connecting rod weft beating mechanism is composed of a crankshaft 5, a beating connecting rod 6, and a beating rocker 7. The crankshaft 4 makes a uniform rotational motion around the weft insertion crank transmission gear 1, so that the beating rocker 7 swings periodically around the differential gear train. The rotation center of the crankshaft 5 is collinear with the rotation center of the weft insertion crank, and the rotation center of the beating rocker 7 is collinear with the rotation center of the weft insertion rocker 3, and the rotation center is collinear with the rotation center of the weft insertion rocker 3.

[0031] At the same time, in order to adjust the length and timing of the weft insertion crank, a timing scale 16 is fixed on the outer ring of the weft insertion crank transmission gear 1; on the side of the tooth plate of the weft insertion crank transmission gear 1 away from the crankshaft 5, a rotating disk 17 and a crank length adjustment slider 18 are detachably connected in sequence, and an installation shaft 19 is integrally formed on the crank length adjustment slider 18, and one end of the weft insertion connecting rod 2 is sleeved on the installation shaft 19 to achieve connection.

[0032] A plurality of first mounting holes 20 are provided on the crank length adjustment slider 18, and the first mounting holes 20 are divided into two groups and arranged in parallel. A plurality of second mounting holes 21 are provided at corresponding positions of the rotating disk 17, and the plurality of second mounting holes 21 are at different distances from the center of the rotating disk 17. The length adjustment bolt passes through the first mounting hole 20 and the second mounting hole 21 in sequence to detachably connect the crank length adjustment slider 18 to the rotating disk 17.

[0033] A plurality of third mounting holes 22 are provided on the rotating disk 17, and a plurality of fourth mounting holes 23 are provided at corresponding positions on the tooth plate of the weft insertion crank transmission gear 1. The plurality of third mounting holes 22 are distributed in a ring shape along the center of the rotating disk 17. The timing adjustment bolts pass through the third mounting holes 22 and the fourth mounting holes 23 in sequence to detachably connect the rotating disk 17 to the weft insertion crank transmission gear 1.

[0034] In order to ensure that the rapier heads meet in the center at 180°, the weft insertion crank can be fine-tuned during assembly to adjust the length and timing of the weft insertion crank.

[0035] The method for adjusting the timing of the weft insertion crank is as follows: rotate the rotating disk 17 to adjust the phase angle of the rotating disk 17 in the weft insertion crank transmission gear 1, and use the timing scale 16 as a reference to align the different third mounting holes 22 and the fourth mounting holes 23. The timing adjustment bolt passes through the third mounting hole 22 and the fourth mounting hole 23 in turn to detachably connect the rotating disk 17 to the weft insertion crank transmission gear 1 to achieve timing adjustment.

[0036] Method for adjusting the length of the weft insertion crank: move the crank length adjustment slider 18 left and right (or front and back) to align different first mounting holes 20 and second mounting holes 21, and the length adjustment bolt passes through different first mounting holes 20 and second mounting holes 21 in sequence to detachably connect the crank length adjustment slider 18 to the rotating disk 17 to achieve the adjustment of the weft insertion crank length.

[0037] By rotating the rotating disk 17 in the weft insertion crank transmission gear 1 to make it rotate relative to the weft insertion crank transmission gear 1, the relative angle between the weft insertion crank and the main shaft can be adjusted. With the timing scale 16 as a reference, a fixed limit is performed when the angle is appropriate, thereby adjusting the phase of the sword head and adjusting the timing of sword entry to make it advance the sword earlier or later.

[0038] Although 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 present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A four-link weft insertion and beating-up composite mechanism for a rapier loom, characterized in that: It includes a four-link weft insertion mechanism, a differential gear train and a four-link weft beating mechanism. The four-link weft insertion mechanism comprises a weft insertion crank transmission gear, a weft insertion connecting rod and a weft insertion rocker, one end of the weft insertion connecting rod is connected to the weft insertion crank transmission gear, the other end is connected to the weft insertion rocker, and the other end of the weft insertion rocker is connected to the differential gear train; The four-link beating mechanism comprises a crankshaft, a beating connecting rod and a beating rocker, wherein the two ends of the beating connecting rod are respectively provided with a first through hole and a second through hole, one end of the crankshaft passes through the first through hole and is fixedly connected to the weft insertion crank transmission gear, and the other end of the crankshaft is a free end; One end of the beating rocker is rotatably connected to one end of the beating connecting rod provided with a second through hole, and the other end is connected to the differential gear train.

2. A four-link weft insertion and beating-up composite mechanism for a rapier loom as claimed in claim 1, characterized in that: The differential gear train comprises a gear ring fixed to the weft insertion rocker and a planet carrier synchronized with the weft beating rocker.

3. A four-link weft insertion and beating-up composite mechanism for a rapier loom as claimed in claim 2, characterized in that: A sun gear is arranged at the center of the differential gear train, and a bevel gear set is arranged in driving connection with the sun gear.

4. A four-link weft insertion and beating-up composite mechanism for a rapier loom as claimed in claim 3, characterized in that: The bevel gear set comprises a first-stage active bevel gear and a second-stage driven bevel gear, wherein the first-stage active bevel gear is coaxial with the sun gear; and the second-stage driven bevel gear is coaxially connected with a sword transmission gear.

5. A four-link weft insertion and beating-up composite mechanism for a rapier loom as claimed in claim 1, characterized in that: On the side of the tooth plate of the weft insertion crank transmission gear away from the crankshaft, a rotating disk and a crank length adjustment slider are detachably connected in sequence, and a mounting shaft is integrally formed on the crank length adjustment slider, and one end of the weft insertion connecting rod is sleeved on the mounting shaft to achieve connection.

6. A four-link weft insertion and beating-up composite mechanism for a rapier loom as claimed in claim 5, characterized in that: A plurality of first mounting holes are provided on the crank length adjustment slider, and a plurality of second mounting holes are provided at corresponding positions of the rotating disk. The length adjustment bolts pass through the first mounting holes and the second mounting holes in sequence to detachably connect the crank length adjustment slider to the rotating disk; the plurality of second mounting holes are at different distances from the center of the rotating disk.

7. A four-link weft insertion and beating-up composite mechanism for a rapier loom as claimed in claim 6, characterized in that: A plurality of third mounting holes are provided on the rotating disk, and a plurality of fourth mounting holes are provided at corresponding positions of the tooth plate of the weft insertion crank transmission gear. The timing adjustment bolts pass through the third mounting holes and the fourth mounting holes in sequence to detachably connect the rotating disk to the weft insertion crank transmission gear; the plurality of third mounting holes are distributed in a ring shape along the center of the rotating disk.

8. A four-link weft insertion and beating-up composite mechanism for a rapier loom as claimed in claim 7, characterized in that: A timing scale is arranged on the outer ring of the weft insertion crank transmission gear.

Images