Double weave plastic circular loom

Abstract

The application discloses a double-weaving plastic circular weaving machine, which comprises a rack, a main shaft and a door ring assembly installed on the rack, the door ring assembly comprises an upper door ring, a lower door ring and a shuttle without a shuttle wheel, the shuttle has two layers and is distributed in an upper and lower mode, a plurality of supporting pieces are connected between the upper door ring and the lower door ring, the inner side of the supporting piece is provided with an installation groove, the installation groove is distributed in an upper and lower mode and has two layers, a roller is vertically installed in each installation groove, an upper limiting wheel is arranged on the upper side of each installation groove, a lower limiting wheel is arranged on the lower side of each installation groove, an upper avoiding cavity is formed between the top end of the roller and the upper side of the installation groove, a lower avoiding cavity is formed between the bottom end of the roller and the lower side of the installation groove, and the shuttle bottom plate comprises a base body, an upper eave and a lower eave. The double-weaving plastic circular weaving machine is provided, the upper and lower sides of the shuttle bottom plate can be respectively outwardly inclined and extended into the upper avoiding cavity and the lower avoiding cavity, the silk thread is not easy to touch the upper limiting wheel and the lower limiting wheel, and the vertical stability of the shuttle is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic circular weaving machines, in particular to a double-weaving plastic circular weaving machine. BACKGROUND

[0002] The existing double-weaving plastic circular weaving machine can refer to the patent with the application number CN2006101597640, which comprises a rack, a main shaft, and a door circle assembly. The door circle assembly can refer to the existing patent with the application number CN2004100854802, which comprises an upper door circle, a lower door circle, and a shuttleless shuttle. The upper door circle and the lower door circle are vertically installed with a roller body. The outer side of the shuttle contacts the roller body and makes a circular motion between the upper door circle and the lower door circle. The lower side of the upper door circle is rotationally connected with an upper limit wheel, and the upper side of the lower door circle is rotationally connected with an upper limit wheel. When the shuttle is moving, the upper limit wheel acts on the inner side of the upper side of the shuttle, and the lower limit wheel acts on the inner side of the lower side of the shuttle.

[0003] In the door circle assembly of the existing double-weaving plastic circular weaving machine, the upper end of the roller body extends to the upper door circle, and the lower end of the roller body extends to the lower door circle. The upper and lower sides of the shuttle cannot extend outward through the upper and lower ends of the roller body. At the same time, the upper limit wheel contacts the upper side of the shuttle, and the lower limit wheel contacts the lower side of the shuttle. In order to maintain the structural strength of the upper and lower sides of the shuttle, the thickness cannot be designed too thin. Therefore, even if inclined surfaces are arranged on the upper and lower sides of the shuttle to contact the upper limit wheel and the lower limit wheel, respectively, the upper limit wheel and the lower limit wheel cannot be arranged more outwardly, i.e., the upper limit wheel and the lower limit wheel are closer to the center of the door circle assembly. In actual production, the warp yarn is prone to contact the upper limit wheel and the lower limit wheel, which causes the warp yarn to wear or entangle, affecting the product quality, and in severe cases, the production cannot be carried out normally. Moreover, the outer bottom surface of the shuttle does not have upper and lower limits when contacting the roller body, which also affects the vertical stability of the shuttle when it is running. SUMMARY

[0004] The present application is proposed to solve the problems of the existing double-weaving plastic circular weaving machine, i.e., the warp yarn is prone to contact the upper limit wheel and the lower limit wheel, and the vertical stability of the shuttle when it is moving is low. The double-weaving plastic circular weaving machine is provided with upper and lower sides of the shuttle bottom plate which can be inclined outwardly into the upper and lower avoidance cavities, respectively, so as to make the upper limit wheel and the lower limit wheel away from the center of the shuttleless door circle assembly, make the warp yarn not easy to contact the upper limit wheel and the lower limit wheel, and improve the vertical stability of the shuttle when it is running.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] The application relates to a double-weaving plastic circular weaving machine, which comprises a frame, a main shaft and a door ring assembly mounted on the frame, the door ring assembly comprising an upper door ring, a lower door ring and a shuttle without a shuttle wheel, the shuttle having two layers and being distributed in an upper and lower manner, a plurality of supporting members being connected between the upper door ring and the lower door ring, the inner side of the supporting member being provided with an installation groove which is open towards the center of the door ring assembly, two installation grooves being distributed in an upper and lower manner, a roller being vertically installed in each installation groove, all the rollers forming a rolling track, the main shaft rotating to drive the shuttle to make a circular motion along the rolling track, the upper side of each installation groove being provided with an upper limiting wheel and the lower side of each installation groove being provided with a lower limiting wheel, the top end of the roller and the upper side of the installation groove having an upper avoiding cavity, the bottom end of the roller and the lower side of the installation groove having a lower avoiding cavity, the shuttle bottom plate comprising a base body, an upper eave located on the upper side of the base body and a lower eave located on the lower side of the base body, the bottom surface of the base body being in contact with the roller, the upper eave being outwardly inclined and extending into the upper avoiding cavity, the lower eave being outwardly inclined and extending into the lower avoiding cavity, the upper limiting wheel acting on the inner side of the upper eave and the lower limiting wheel acting on the inner side of the lower eave.

[0007] Through the above arrangement, the upper side of the shuttle bottom plate can be outwardly inclined and extend into the upper avoiding cavity, the lower side of the shuttle bottom plate can be outwardly inclined and extend into the lower avoiding cavity, the upper limiting wheel and the lower limiting wheel in contact with the shuttle bottom plate are facilitated to be far away from the center of the door ring assembly, and thus the warp yarn is not easy to be in contact with the upper limiting wheel and the lower limiting wheel during the operation of the double-weaving plastic circular weaving machine, the warp yarn is prevented from being abraded, and the product quality is improved; in addition, the upper limiting wheel can prevent the shuttle bottom plate from moving upward, the lower limiting wheel can prevent the shuttle bottom plate from moving downward, the vertical stability of the shuttle bottom plate is better during the movement, and the upper limiting wheel and the lower limiting wheel can also prevent the shuttle from derailing.

[0008] Further, the outward inclination angle of the upper eave is 15-60 DEG, and the outward inclination angle of the lower eave is equal to the outward inclination angle of the upper eave.

[0009] Through the above arrangement, the upper and lower sides of the shuttle bottom plate do not need to be distinguished during the installation of the shuttle, and the installation of the shuttle bottom plate is facilitated.

[0010] Further, the outer peripheral radius of the roller is R, the horizontal distance of the outward inclination of the upper eave is L, and L is greater than or equal to 0.5R.

[0011] Through the above arrangement, the upper limiting wheel and the lower limiting wheel are facilitated to be closer to the axis of the roller, and thus the upper limiting wheel and the lower limiting wheel are closer to the outer side of the door ring assembly.

[0012] Further, the width of the base body is consistent with the length of the roller.

[0013] Through the above arrangement, the stability is better during the movement of the shuttle; in addition, the upper eave and the lower eave can also share the pressure of the upper limiting wheel and the lower limiting wheel, and the abrasion of the upper limiting wheel and the lower limiting wheel is reduced.

[0014] Further, the roller is mounted on an axle, two ends of the axle are mounted on the support, upper and lower sides of the mounting slot are provided with positioning slots, at least one side of the positioning slot is provided with an opening for mounting the end of the axle, and a limiting piece is arranged at the opening to limit the end of the axle in the positioning slot.

[0015] Through the above arrangement, the roller can be conveniently mounted between the upper door ring and the lower door ring through the axle.

[0016] Further, one side of the support facing the movement direction of the shuttle or the left and right sides of the support is provided with a thread blocking plate, the inner side of the thread blocking plate avoids the movement track of the shuttle, and the projection of the thread blocking plate towards the mounting slot covers the axle and the positioning slot.

[0017] Through the above arrangement, when the shuttle is working, the thread blocking plate can further prevent the warp from contacting the upper limiting wheel and the lower limiting wheel; in addition, the thread blocking plate can also prevent the warp from winding on the axle; in addition, the thread blocking plate can also prevent the limiting piece from falling out of the positioning slot.

[0018] Further, the thread blocking plate is fixedly connected to the upper door ring and the lower door ring; or the thread blocking plate is fixedly connected to the support.

[0019] Further, one axle is provided with one roller or two rollers.

[0020] Further, the upper door ring abuts against the top end surface of the support and is connected to the top end of the support through an upper bolt and an upper pin, the upper pin is located on the inner and outer sides of the upper bolt; and / or the lower door ring abuts against the bottom end surface of the support and is connected to the bottom end of the support through a lower bolt and a lower pin, the lower pin is located on the inner and outer sides of the lower bolt.

[0021] Further, the shuttle bottom plate is a metal bottom plate, the outer periphery of the roller, the upper limiting wheel and the lower limiting wheel is provided with a plastic layer, the plastic layer contacts the shuttle bottom plate; or the shuttle bottom plate is a plastic body, the roller, the upper limiting wheel and the lower limiting wheel are metal wheels; or the bottom surface of the base body is provided with a plastic plate, the roller is a metal wheel and contacts the plastic plate; or the outer side of the upper eaves and the lower eaves is provided with a plastic layer, the upper limiting wheel and the lower limiting wheel are metal wheels and contact the plastic layer.

[0022] Through the above arrangement, when the shuttle bottom plate is moving, the noise is smaller. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic view of the door ring assembly of the double-weaving plastic circular weaving machine of the embodiment.

[0024] Figure 2 It is an enlarged view of A of Figure 1

[0025] Figure 3 It is a sectional view of the door ring assembly of the embodiment. ​

[0026] Figure 4 This is a schematic diagram of a roller mounted on a support member, as shown in the embodiment.

[0027] Figure 5 This is a cross-sectional view of a door ring assembly with two rollers in the mounting slot, as shown in the embodiment. Detailed Implementation

[0028] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0029] See Figures 1 to 5 A double-weave plastic circular loom includes a frame and a main shaft and a gate assembly mounted on the frame. The gate assembly includes an upper gate 1, a lower gate 2, and a shuttle without a shuttle wheel. The shuttle has two layers and is distributed vertically. Multiple support members 3 connect the upper gate 1 and the lower gate 2. The inner side of the support member 3 is provided with a mounting groove 4 opening towards the center of the gate assembly. There are two mounting grooves 4 distributed vertically. A roller 5 is vertically mounted in each mounting groove 4. All rollers 5 form a rolling track. The rotation of the main shaft drives the shuttle to make a circular motion along the rolling track. The support member 3 is provided with an upper limit wheel 6 on the upper side of each mounting groove 4. A lower limiting wheel 7 is provided on the lower side of each mounting groove 4. An upper clearance cavity 8 is provided between the top end of the roller 5 and the upper side of the mounting groove 4, and a lower clearance cavity 9 is provided between the bottom end of the roller 5 and the lower side of the mounting groove 4. The shuttle base plate includes a base 10 and an upper protrusion 11 located on the upper side of the base 10 and a lower protrusion 12 located on the lower side of the base 10. The bottom surface of the base 10 is in contact with the roller 5. The upper protrusion 11 is inclined outward and extends into the upper clearance cavity 8, and the lower protrusion 12 is inclined outward and extends into the lower clearance cavity 9. The upper limiting wheel 6 acts on the inner side of the upper protrusion 11, and the lower limiting wheel 7 acts on the inner side of the lower protrusion 12.

[0030] With the above configuration, the upper side of the shuttle base plate can tilt outward and extend into the upper clearance cavity, and the lower side of the shuttle base plate can tilt outward and extend into the lower clearance cavity. This makes it easier to keep the upper limit wheel and lower limit wheel that are in contact with the shuttle base plate away from the center of the gate assembly. As a result, when the double-weave plastic circular loom is working, the warp yarns are less likely to come into contact with the upper limit wheel and lower limit wheel, preventing warp yarn wear or entanglement, improving product quality, reducing the probability of warp yarn breakage, and ensuring weaving efficiency. In addition, the upper limit wheel can prevent the shuttle base plate from moving upward, and the lower limit wheel can prevent the shuttle base plate from moving downward. The vertical stability of the shuttle base plate is better during movement, and the upper limit wheel and lower limit wheel can also prevent the shuttle from derailing. After the upper eaves 11 and lower eaves 12 are tilted outward, a limiting groove can be formed on the outer bottom surface of the base. This helps the base 10 to be limited in the vertical direction relative to the roller 5. In conjunction with the upper and lower limiting wheels, the shuttle can be kept basically on a horizontal plane when it is making circular motion, reducing the shuttle's vertical jump and greatly improving the vertical stability of the shuttle during movement. This increases the equipment's uptime, reduces maintenance costs, reduces the labor intensity of workers, and also helps improve weaving quality.

[0031] Specifically, the frame and spindle are not shown in the diagram; their structure can be found in existing technology with application number CN2006101597640, and will not be elaborated here. For the door ring assembly, see... Figure 1 , Figure 2 and Figure 3The upper and lower door rings are connected by a support member. Both the upper and lower limit wheels are located on the inner side of the support member near the door ring assembly, i.e., on the side of the support member closest to the center of the door ring assembly. The upper end of the roller is lower than the upper side of the mounting groove, thus forming an upper clearance cavity between the upper end of the roller and the upper side of the mounting groove. The lower end of the roller is higher than the lower side of the mounting groove, thus forming a lower clearance cavity between the lower end of the roller and the lower side of the mounting groove. The upper clearance cavity facilitates the outward tilting of the upper protrusion of the shuttle base plate. Specifically, the upper protrusion tilts upward and away from the center of the door ring assembly, making the upper limit wheel contacting the upper protrusion closer to the outer side of the door ring assembly. The lower clearance cavity facilitates the outward tilting of the lower protrusion of the shuttle base plate. Specifically, the lower protrusion tilts downward and away from the center of the door ring assembly, making the lower limit wheel contacting the lower protrusion closer to the door ring. On the outer side of the component; in reality, the warp threads pass radially from the outside to the inside between the upper and lower gate rings. That is, the closer to the outside, the larger the spacing between the warp threads, and the less likely the upper and lower limit wheels are to contact the warp threads. The outer peripheral side of the upper limit wheel contacts the inner side of the upper convex edge, and the outer peripheral side of the upper limit wheel and the inner side of the upper convex edge are parallel, so that the contact area between the upper limit wheel and the upper convex edge is larger, which improves the stability when the two are in contact and limiting, and reduces the impact force of the upper convex edge on the upper limit wheel, thus reducing the wear of the upper limit wheel. Similarly, the outer peripheral side of the lower limit wheel contacts the inner side of the lower convex edge, and the outer peripheral side of the lower limit wheel and the inner side of the lower convex edge are parallel, so that the contact area between the lower limit wheel and the lower convex edge is larger, which improves the stability when the two are in contact and limiting, and reduces the impact force of the lower convex edge on the lower limit wheel, thus reducing the wear of the lower limit wheel.

[0032] As one implementation method, the outward tilt angle of the upper eaves 11 is 15° to 60°, such as 30°, 45°, etc., and the outward tilt angle of the lower eaves 12 is equal to the outward tilt angle of the upper eaves 11. When the outward tilt angles of the upper and lower eaves are large, the upper limit wheel and the lower limit wheel can be selected as conical wheels.

[0033] With the above settings, it is not necessary to distinguish between the upper and lower sides of the shuttle base plate when installing the shuttle, which facilitates the installation of the shuttle base plate.

[0034] For details, see Figure 3 The angle at which the upper eaves tilts outward is 'a', which refers to the angle between the tilt direction of the upper eaves and the vertical plane; similarly, the angle at which the lower eaves tilts outward is 'b', which refers to the angle between the tilt direction of the lower eaves and the vertical plane. If the outward tilt angles of the upper and lower eaves are too small, the upper and lower limit wheels cannot be installed outwards; if the outward tilt angles of the upper and lower eaves are too large, the radial limiting effect of the upper and lower limit wheels on the shuttle base plate will be reduced.

[0035] As one implementation method, the outer radius of the roller 5 is R, and the horizontal distance of the outward tilt of the upper eaves 11 is L, where L≥0.5R.

[0036] The above configuration allows the upper and lower limit rollers to be positioned closer to the axis of the rollers, thus bringing them closer to the outer side of the gate assembly. Of course, when R is large, such as in large circular looms, L can be less than 0.5R.

[0037] In one implementation, the width of the base 10 is the same as the length of the roller 5. This "same" can mean that the width of the base 10 is equal to the length of the roller 5, or that the width of the base 10 is slightly larger than the length of the roller 5.

[0038] With the above settings, the shuttle moves more stably; in addition, the upper and lower convex eaves can also share the reaction force of the upper and lower limit wheels, reducing the wear of the upper and lower limit wheels.

[0039] Specifically, at this point, see Figure 3 There is one roller. The width of the base refers to the distance between the upper and lower sides of the base. When the shuttle moves, the upper end of the roller is exactly at the lower end of the upper convex eave, which can prevent the shuttle from moving downwards. The lower end of the roller is exactly at the upper end of the lower convex eave, which can also prevent the shuttle from moving downwards, further improving the stability of the shuttle. In addition, it can also share the reaction force of the upper and lower limit rollers, reducing the wear of the upper and lower limit rollers.

[0040] In one implementation, the roller 5 is mounted on the axle 13, and both ends of the axle 13 are mounted on the support member 3. The upper and lower sides of the mounting groove 4 are provided with positioning grooves 14. At least one side of the positioning groove 14 has an opening for mounting the end of the axle 13. A limiting member 15 is provided at the opening to confine the end of the axle 13 within the positioning groove 14. The limiting member 15 can be a stop and is fixed to the opening by fasteners.

[0041] The above setup allows for easy installation of rollers between the upper and lower door rings via an axle.

[0042] For details, see Figure 4 When installing the roller, first pass the axle through the roller, then insert the upper and lower ends of the axle into the positioning groove through the opening, and then use the limiting piece to block the opening to prevent the axle from falling out of the positioning groove.

[0043] As one implementation, a wire-blocking plate 16 is provided on the side of the support member 3 facing the direction of shuttle movement or on the left and right sides of the support member 3, see [link to relevant documentation]. Figure 2 (To keep the accompanying diagrams concise, Figure 2 Only one wire stop plate is shown in the image. In reality, each support member is equipped with a wire stop plate. The inner side of the wire stop plate 16 avoids the movement trajectory of the shuttle. The projection of the wire stop plate 16 toward the mounting groove 4 covers the axle 13 and the positioning groove 14.

[0044] With the above settings, when the shuttle is working, the wire stop plate can further prevent the warp threads from hitting the upper and lower limit wheels; in addition, the wire stop plate can also prevent the warp threads from getting tangled on the wheel axle; in addition, the wire stop plate can also prevent the limiting parts from falling out of the positioning groove.

[0045] Specifically, when the shuttle is working, it passes through the gap formed after two adjacent warp threads intersect. During this process, the front end of the shuttle will contact the warp thread in front and separate the two adjacent warp threads vertically. Under the action of friction, the warp thread will slightly deviate in the direction of shuttle movement. When the projection of the baffle plate towards the mounting groove covers the wheel axle and support, the baffle plate can block the warp thread and prevent the warp thread from deviating and contacting the upper limit wheel, lower limit wheel, and roller. Similarly, the projection of the baffle plate covers the positioning groove 14 and can contact the limiting component, which can prevent the limiting component from disengaging from the positioning groove.

[0046] In one implementation, the wire baffle 16 is fixedly connected to the upper door ring 1 and the lower door ring 2; or, the wire baffle 16 is fixedly connected to the support member 3.

[0047] As one implementation, one or two rollers 5 are provided on a single axle 13. Depending on the actual needs, three or four rollers can also be provided, etc.

[0048] See Figure 5 When there are two rollers, there is a gap between them to facilitate heat dissipation. The distance between the upper end of the upper roller and the lower end of the lower roller is equal to the width of the base. The upper end of the upper roller is located at the lower end of the upper eave, and the lower end of the lower roller is located at the upper end of the lower eave, thereby suppressing the up-and-down movement of the shuttle bottom plate.

[0049] In one implementation, the upper door ring 1 abuts against the top surface of the support member 3 and is connected to the top of the support member 3 via an upper bolt 17 and an upper pin 18, with the upper pin 18 located on both the inner and outer sides of the upper bolt 17; and / or, the lower door ring 2 abuts against the bottom surface of the support member 3 and is connected to the bottom of the support member 3 via a lower bolt 19 and a lower pin 20, with the lower pin 20 located on both the inner and outer sides of the lower bolt 19. By using the pin and bolt combination, the pins share the shear force generated by the vibration of the support member, thereby reducing the shear force on the bolts caused by the vibration of the support member and improving the fixing reliability of the support member. Alternatively, the support member can be fixed using only bolts, or it can be fixed using bolts and a number of other pins.

[0050] As one implementation method, see Figure 3 The shuttle base plate is a metal base plate, and the outer periphery of roller 5, upper limit roller 6, and lower limit roller 7 is provided with a plastic layer 21, which contacts the shuttle base plate; or, the shuttle base plate is a plastic body, and roller 5, upper limit roller 6, and lower limit roller 7 are all metal wheels; or, see [link to relevant documentation]Figure 5 The bottom surface of the base 10 is provided with a plastic plate 22, and the roller 5 is a metal wheel that is in contact with the plastic plate 22; or, the outer sides of the upper eaves 11 and the lower eaves 12 are provided with a plastic layer 21, and the upper limit wheel 6 and the lower limit wheel 7 are both metal wheels that are in contact with the plastic layer 21.

[0051] With the above settings, the bobbin plate vibrates less and produces less noise when it moves.

[0052] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A double-weave plastic circular loom, comprising a frame and a main shaft and a gate assembly mounted on the frame, the gate assembly comprising an upper gate (1), a lower gate (2) and a shuttle without a shuttle wheel, the shuttle having two layers and distributed vertically, a plurality of support members (3) connecting the upper gate (1) and the lower gate (2), the inner side of the support member (3) having an installation groove (4) opening toward the center of the shuttleless gate assembly, two installation grooves (4) distributed vertically, each installation groove (4) having a roller (5) vertically mounted therein, all rollers (5) forming a rolling track, the main shaft rotating to drive the shuttle to make a circular motion along the rolling track, the support member (3) having an upper limit wheel (6) on the upper side of each installation groove (4) and a lower limit wheel (7) on the lower side of each installation groove (4), characterized in that, The roller (5) has an upper clearance cavity (8) between its top end and the upper side of the mounting groove (4), and a lower clearance cavity (9) between its bottom end and the lower side of the mounting groove (4). The bottom plate includes a base (10) and an upper protrusion (11) on the upper side of the base (10) and a lower protrusion (12) on the lower side of the base (10). The bottom surface of the base (10) is in contact with the roller (5). The upper protrusion (11) extends outward into the upper clearance cavity (8), and the lower protrusion (12) extends outward into the lower clearance cavity (9). The upper limit wheel (6) acts on the inner side of the upper protrusion (11), and the lower limit wheel (7) acts on the inner side of the lower protrusion (12).

2. The double-weave plastic circular loom according to claim 1, characterized in that, The upper eaves (11) tilt outward at an angle of 15° to 60°, and the lower eaves (12) tilt outward at the same angle as the upper eaves (11).

3. The double-weave plastic circular loom according to claim 1, characterized in that, The outer radius of the roller (5) is R, and the horizontal distance of the upper eave (11) tilting outward is L, where L≥0.5R.

4. The double-weave plastic circular loom according to claim 1, characterized in that, The width of the base (10) is the same as the length of the roller (5).

5. The double-weave plastic circular loom according to any one of claims 1 to 4, characterized in that, The roller (5) is mounted on the axle (13), and both ends of the axle (13) are mounted on the support (3). The upper and lower sides of the mounting groove (4) are provided with positioning grooves (14). At least one side of the positioning groove (14) has an opening for mounting the end of the axle (13), and a limiting member (15) is provided at the opening to limit the end of the axle (13) within the positioning groove (14).

6. The double-weave plastic circular loom according to claim 5, characterized in that, The support member (3) is provided with a wire baffle (16) on one side facing the direction of shuttle movement or on the left and right sides of the support member (3). The inner side of the wire baffle (16) avoids the movement trajectory of the shuttle. The projection of the wire baffle (16) toward the mounting groove (4) covers the wheel axle (13) and the positioning groove (14).

7. The double-weave plastic circular loom according to claim 6, characterized in that, The baffle plate (16) is fixedly connected to the upper door ring (1) and the lower door ring (2); or, the baffle plate (16) is fixedly connected to the support member (3).

8. The double-weave plastic circular loom according to claim 5, characterized in that, One roller (5) or two rollers (5) are mounted on one axle (13).

9. The double-weave plastic circular loom according to any one of claims 1 to 4, characterized in that, The upper door ring (1) abuts against the top surface of the support member (3) and is connected to the top of the support member (3) through the upper bolt (17) and the upper pin (18), with the upper pin (18) located on the inner and outer sides of the upper bolt (17); and / or, the lower door ring (2) abuts against the bottom surface of the support member (3) and is connected to the bottom of the support member (3) through the lower bolt (19) and the lower pin (20), with the lower pin (20) located on the inner and outer sides of the lower bolt (19).

10. The double-weave plastic circular loom according to any one of claims 1 to 4, characterized in that, The shuttle base plate is a metal base plate, and the outer periphery of the roller (5), upper limit wheel (6) and lower limit wheel (7) is provided with a plastic layer (21), which is in contact with the shuttle base plate; or, the shuttle base plate is a plastic body, and the roller (5), upper limit wheel (6) and lower limit wheel (7) are all metal wheels; or, the bottom surface of the base (10) is provided with a plastic plate (22), and the roller (5) is a metal wheel and is in contact with the plastic plate (22); or, the inner side of the upper eaves (11) and lower eaves (12) is provided with a plastic layer (21), and the upper limit wheel (6) and lower limit wheel (7) are both metal wheels and are in contact with the plastic layer (21).

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