Track sheet type shuttle driving device for circular weaving machine

Abstract

The invention belongs to the technical field of circular weaving machine manufacturing, and discloses a rail piece type shuttle driving device for a circular weaving machine, which comprises a cylindrical cam, a rail piece arranged above the cylindrical cam, a shuttle embedded in the rail piece and a support structure for supporting the rail piece, the rail piece is vertically connected with the support structure and can slide up and down relative to the support structure, and the rail piece is connected with the shuttle. A protrusion is formed on the upper surface of the cylindrical cam, the driving structure drives the cylindrical cam to rotate, and the rail piece moves upwards under the action of the pushing force of the cylindrical cam to drive the shuttle to move. The driving force of the shuttle is provided by the track piece, a shuttle pushing device in a traditional circular weaving machine is not needed, scraping and rolling of warp and a shuttle pushing component are avoided, the requirements for warp strength and abrasion resistance are lowered, the device can adapt to and weave various kinds of yarn with poor strength or abrasion resistance, and the fabric quality is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of circular loom manufacturing, and in particular relates to a track-plate type shuttle driving device for a circular loom. Background Art

[0002] Most traditional circular looms have a shuttle pusher assembly. During operation, the shuttle pusher, which pushes the shuttle in a circular motion, can scrape against the warp yarns. This increases the strength and wear resistance requirements of the warp yarns, making it unsuitable for weaving low-strength and less wear-resistant yarns. The circular loom shuttle drive method disclosed in patent CN201210144685.8 utilizes a meshing system of gears and circular racks to drive the shuttle. Several gears are arranged on a ring and distributed along the circumference. A synchronous belt connects the gears. A motor drives one of the gears, transmitting the motion sequence to the others via the synchronous belt. However, this drive method is not convenient for installing and tensioning the toothed belt, resulting in high maintenance costs. During operation, the shuttle must accelerate from rest to a high speed in a very short distance and brake precisely at the end of weft insertion. This places high demands on the shuttle guide motor's peak torque, power density, and control system response speed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a track-type circular loom shuttle driving device, so that the shuttle movement of the circular loom is more stable during the weaving process, the shuttle driving components do not scrape or crush the warp yarns, and the equipment reduces the requirements for the strength and wear resistance of the warp yarns, and can adapt to and weave various yarns with poor strength or wear resistance, thereby ensuring the quality of the fabric.

[0004] In order to solve the above technical problems, the present invention provides a track-piece circular loom shuttle drive device, comprising a cylindrical cam, a track piece arranged above the cylindrical cam, a shuttle embedded in the track piece, and a support structure for supporting the track piece. The track piece is vertically connected to the support structure and can slide up and down relative to the support structure. A protrusion is formed on the upper surface of the cylindrical cam; the driving structure drives the cylindrical cam to rotate, and the track piece moves upward under the action of the thrust force of the cylindrical cam, driving the shuttle to move.

[0005] According to the present invention, further, the supporting structure includes an upper door ring, a lower door ring and columns respectively connected to the upper door ring and the lower door ring at both ends. A plurality of tooth grooves are radially opened on the upper door ring and the lower door ring, and the tooth grooves pass through the upper and lower surfaces of the corresponding door rings, and the tooth grooves of the upper door ring and the tooth grooves of the lower door ring correspond one to one, and the track plate is slidably connected in the corresponding tooth grooves of the upper door ring and the lower door ring.

[0006] According to the present invention, further, the top surface of the cylindrical cam forms a plurality of equally spaced protrusions, and the number of the protrusions is consistent with the number of shuttles; each protrusion includes a lower rest section, a push section, an upper rest section and a return section, and the cylindrical cam contacts the bottom surface of the track piece; when the cylindrical cam is in the lower rest section, the track piece in contact with it remains stationary at the lowest position; when the cylindrical cam is in the push section, the track piece in contact with it moves upward; when the cylindrical cam is in the upper rest section, the track piece in contact with it remains stationary at the highest position; when the cylindrical cam is in the return section, the track piece in contact with it moves downward under the action of gravity.

[0007] According to the present invention, further, a notch is provided on the track piece, and the opening of the notch points to the axis of the circular loom.

[0008] According to the present invention, further, the upper door ring and the lower door ring are coaxially arranged in a circular ring shape, and the axes of the upper door ring and the lower door ring coincide with the axis of the cylindrical cam.

[0009] According to the present invention, further, the columns are evenly distributed between the upper and lower door rings for connecting the upper door ring and the lower door ring, and their cross-sections include but are not limited to circular, elliptical, and square.

[0010] According to the present invention, further, the shuttle is embedded in the space formed by the slots of several track plates, and the shuttle is arc-shaped as a whole, with nylon blocks installed on the upper and lower sides, the cross-section of the nylon block corresponds to the upper and lower cross-sections of the track plate slot, and there is an arc-shaped nylon guide bar on the back of the shuttle, and the arc-shaped nylon guide bar contacts the side of the track plate slot, and two tightening structures are symmetrically installed on the arc-shaped side of the shuttle recess. Each group of tightening structures includes a bobbin bracket whose bottom is fixed to the arc-shaped side of the shuttle recess, and the other end of the bobbin bracket extends vertically upward, and the top side surface of the bobbin bracket is connected to a bobbin spring bracket, and the two groups of bobbin spring brackets are arranged facing each other, and the outer periphery of the bobbin spring bracket is covered with a weft yarn tube top, and the spring is covered on the outer periphery of the bobbin spring bracket, one end is fixed to the side surface close to the inner side of the spring bracket, and the other end is fixed to the end face of the weft yarn tube top opposite to the spring bracket.

[0011] According to the present invention, further, the notch includes but is not limited to a C-shaped groove, an arc-shaped groove, and a U-shaped groove.

[0012] According to the present invention, further, the upright posts are located on a side of the two that is away from the axis of the circular loom and are distributed equidistantly along the circumference of the two.

[0013] According to the present invention, further, the driving structure includes a motor, the motor output shaft is connected to a transmission shaft, and the transmission shaft is coaxially arranged with the cylindrical cam.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. No rack is required on the back of the shuttle, and no drive components such as the guide post and guide motor need to be installed on the door ring, which reduces equipment costs, avoids rack engagement error and motor output response error caused by the shuttle hitting the guide post, and makes the shuttle movement smoother.

[0016] 2. Several track pieces separate the warp yarns, and the track pieces only move up and down, avoiding the scraping and crushing of the warp yarns and the push shuttle parts, so that the equipment reduces the requirements for the strength and wear resistance of the warp yarns. It can adapt to and weave various yarns with poor strength or wear resistance, ensuring the quality of the fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a structural schematic diagram of the upper and lower door knockers of the present invention.

[0019] Figure 3 Schematic diagram of the structure of the track piece of the present invention.

[0020] Figure 4 Schematic diagram of the combination of the door knocker and the track piece of the present invention

[0021] Figure 5 It is a structural schematic diagram of the shuttle of the present invention.

[0022] Figure 6 This is a schematic diagram of the coordination between the shuttle and the track piece after assembly of the present invention.

[0023] Figure 7 It is a structural schematic diagram of the cylindrical cam of the present invention.

[0024] In the figure: 1-upper door ring; 2-lower door ring; 3-track plate; 31-track plate C-shaped groove; 4-shuttle; 41-nylon block; 42-arc-shaped nylon guide bar; 43-bobbin bracket; 44-weft yarn tube top; 45-bobbin spring bracket; 46-spring; 6-cylindrical cam; 61-lower rest section of cylindrical cam; 62-thrust section of cylindrical cam; 63-upper rest section of cylindrical cam; 64-return section of cylindrical cam; 7-drive shaft. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] It should also be noted that any modifications, equivalent replacements, improvements, etc. made to the various specific technical features described in the above specific embodiments within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0027] Example

[0028] like Figure 1 As shown, a shuttle driving device of a track-piece circular loom comprises a cylindrical cam 6, a track piece 3, an upper door ring 1 and a lower door ring 2 arranged in parallel above and below, a column 5 connected to the upper door ring 1 and the lower door ring 2 at both ends, and a shuttle 4 embedded in the track piece 3; wherein, the track piece 3 is embedded in the tooth grooves of the upper door ring 1 and the lower door ring 2, the shuttle 4 is installed in the C-shaped groove 31 of the track piece 3, the motor drives the cylindrical cam 6 to rotate through the transmission shaft 7, the track piece 3 moves upward under the action of the thrust force of the cylindrical cam 6, and the shuttle 4 moves with the movement of the track piece 3.

[0029] like Figure 2 As shown, the upper door ring 1 and the lower door ring 2 have a number of tooth grooves in the radial direction, the tooth grooves run through the upper and lower surfaces thereof, and the tooth grooves of the upper door ring 1 and the tooth grooves of the lower door ring 2 correspond one to one on a straight line, the upper door ring 1 and the lower door ring 2 are connected by a column 5, and the column 5 is located on the side of the upper door ring 1 away from the axis of the circular loom and is evenly distributed along the circumference of the upper door ring 1 and the lower door ring 2, thereby improving the connection stability of the upper door ring 1 and the lower door ring 2 and making the force on the two evenly distributed.

[0030] like Figure 3 and Figure 4 As shown, the track piece 3 is composed of multiple pieces, which are respectively embedded in the corresponding tooth grooves of the upper door ring 1 and the lower door ring 2 and can slide freely up and down. The track piece 3 has a C-shaped groove 31, the opening of which points to the axis of the circular loom. The C-shaped groove 31 is always located between the upper door ring 1 and the lower door ring 2 during the sliding process of the track piece 3. The C-shaped groove 31 can also be U-shaped, arc-shaped, or other special-shaped opening structures to fix the shuttle 4.

[0031] like Figure 5 and Figure 6As shown, the shuttle 4 is wrapped in the space formed by several C-shaped grooves 31 of the track plates. The shuttle 4 is arc-shaped as a whole, and nylon blocks 41 are installed on the upper and lower sides. The cross-section of the nylon block 41 corresponds to the upper and lower cross-sections of the slot of the track plate 3. There is an arc-shaped nylon guide bar 42 on the back of the shuttle 4, and the arc-shaped nylon guide bar 42 contacts the side of the slot of the track plate 3. Two tightening structures are symmetrically installed on the concave arc side of the shuttle 4. Each group of tightening structures includes a bobbin bracket 43 whose bottom is fixed to the concave arc side of the shuttle 4, and the other end of the bobbin bracket 43 extends vertically upward. The top side surface of the bobbin bracket 43 is connected to the bobbin spring bracket 45. The two groups of bobbin spring brackets 45 are arranged facing each other. The outer periphery of the bobbin spring bracket 45 is covered with a weft yarn tube top 44, and the spring 46 is covered on the outer periphery of the bobbin spring bracket 45, one end is fixed to the side surface close to the inner side of the spring bracket 43, and the other end is fixed to the end face of the weft yarn tube top 44 opposite to the spring bracket 43.

[0032] like Figure 7 As shown, the top surface of the cylindrical cam 6 forms a plurality of equally spaced protrusions, the number of which is consistent with the number of the shuttles 4; each protrusion includes a lower rest section 61, a push section 62, an upper rest section 63 and a return section 64, and the cylindrical cam 6 is in contact with the bottom surface of the track piece 3.

[0033] When the cylindrical cam 6 is in the lower rest section 61, the track piece 3 in contact with it remains stationary at the lowest position; when the cylindrical cam 6 is in the push section 62, the track piece 3 in contact with it moves upward; when the cylindrical cam 6 is in the upper rest section 63, the track piece 3 in contact with it remains stationary at the highest position; when the cylindrical cam 6 is in the return section 64, the track piece 3 in contact with it moves downward under the action of gravity, thereby driving the shuttle 4 to move up and down.

[0034] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form or substance. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the present invention, and these improvements and supplements should also be regarded as the scope of protection of the present invention. Any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the spirit and scope of the present invention by using the technical content disclosed above are all equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A shuttle driving device for a track-type circular loom, characterized in that: It includes a cylindrical cam, a track piece arranged above the cylindrical cam, a shuttle embedded in the track piece and a support structure for supporting the track piece. The track piece is vertically connected to the support structure and can slide up and down relative to the support structure. A protrusion is formed on the upper surface of the cylindrical cam; the driving structure drives the cylindrical cam to rotate, and the track piece moves upward under the action of the pushing force of the cylindrical cam, driving the shuttle to move.

2. A shuttle driving device for a track-type circular loom according to claim 1, characterized in that: The supporting structure includes an upper door ring, a lower door ring and columns connected to the upper door ring and the lower door ring at both ends. A plurality of tooth grooves are radially opened on the upper door ring and the lower door ring. The tooth grooves pass through the upper and lower surfaces of the corresponding door rings, and the tooth grooves of the upper door ring and the tooth grooves of the lower door ring correspond to each other one by one. The track plate is slidably connected in the corresponding tooth grooves of the upper door ring and the lower door ring.

3. The shuttle driving device of a track-type circular loom according to claim 1, characterized in that: The number of the protrusions is consistent with the number of shuttles, and there are multiple protrusions equidistantly distributed along the top surface of the cylindrical cam, and the number of the protrusions is consistent with the number of shuttles; each protrusion includes a lower rest section, a push section, an upper rest section and a return section, and the cylindrical cam contacts the bottom surface of the track piece; when the cylindrical cam is in the lower rest section, the track piece in contact with it remains stationary at the lowest position, when the cylindrical cam is in the push section, the track piece in contact with it moves upward, when the cylindrical cam is in the upper rest section, the track piece in contact with it remains stationary at the highest position, and when the cylindrical cam is in the return section, the track piece in contact with it moves downward under the action of gravity.

4. The shuttle driving device of a track-type circular loom according to claim 1, characterized in that: The track piece is provided with a notch, and the opening of the notch points to the axis of the circular loom.

5. The shuttle driving device of a track-type circular loom according to claim 1, characterized in that: The upper door ring and the lower door ring are coaxially arranged in a circular shape, and the axes of the upper door ring and the lower door ring coincide with the axis of the cylindrical cam.

6. The shuttle driving device of a track-type circular loom according to claim 2, characterized in that: The columns are evenly distributed between the upper and lower door rings for connecting the upper door ring and the lower door ring, and their cross-sections include but are not limited to circular, oval, and square.

7. The shuttle driving device of a track-type circular loom according to claim 4, characterized in that: The shuttle is embedded in the space formed by the slots of several track plates. The shuttle is arc-shaped as a whole, and nylon blocks are installed on the upper and lower sides. The cross-section of the nylon block corresponds to the upper and lower cross-sections of the track plate slot. There is an arc-shaped nylon guide strip on the back of the shuttle, and the arc-shaped nylon guide strip contacts the side of the track plate slot. Two tightening structures are symmetrically installed on the arc-shaped side of the shuttle recess. Each group of tightening structures includes a bobbin bracket whose bottom is fixed to the arc-shaped side of the shuttle recess, and the other end of the bobbin bracket extends vertically upward. The top side surface of the bobbin bracket is connected to a bobbin spring bracket. The two groups of bobbin spring brackets are arranged facing each other, and the outer periphery of the bobbin spring bracket is covered with a weft yarn tube top, and the spring is covered on the outer periphery of the bobbin spring bracket, one end is fixed to the side surface close to the inner side of the spring bracket, and the other end is fixed to the end face of the weft yarn tube top opposite to the spring bracket.

8. The shuttle driving device of a track-type circular loom according to claim 4, characterized in that: The notch includes but is not limited to a C-shaped groove, an arc-shaped groove, and a U-shaped groove.

9. The shuttle driving device of a track-type circular loom according to claim 6, characterized in that: The upright posts are located on one side of the two looms away from the axis of the circular loom and are distributed equidistantly along the circumference of the two looms.

10. The shuttle driving device of a track-type circular loom according to claim 1, characterized in that: The driving structure includes a motor, an output shaft of the motor is connected to a transmission shaft, and the transmission shaft is coaxially arranged with the cylindrical cam.

Images