Lifting opening and closing device of flat knitting machine traction rake

Abstract

The utility model provides a lifting opening and closing device for a traction rake of a flat knitting machine, which relates to the technical field of computerized flat knitting machines and comprises a mounting box, a lifting mechanism and a traction unit, and the upper end of the traction unit can move between the inside and the outside of the mounting box. A return spring used for promoting the upper end of the traction unit to extend out of the mounting box is further arranged between the lifting mechanism and the traction unit, and a driving assembly is arranged in the mounting box and used for controlling the upper end of the traction unit to move inside and outside the mounting box and pushing the lifting mechanism to move upwards in a unified mode. By reducing the complexity of the overall structure, the machining cost can be effectively reduced, the machining efficiency is improved, and by controlling continuous forward and reverse rotation of the rotating shaft, the space needed by rotation of the hook teeth can be reduced, the overall size of the mounting box can be reduced, and the cost can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of computerized flat knitting machines, in particular to a lifting and opening and closing device for a pulling rake of a flat knitting machine. Background Art

[0002] Generally, a pulling device is provided on both sides of the feeding port below the needle plate of a flat knitting machine to realize the pulling of the fabric. A pulling rake is provided on the pulling device. The pulling rake touches the fabric and moves downward to realize the pulling of the fabric downward. The existing structure for realizing the rest and pulling functions of the pulling rake lifting and closing device of the flat knitting machine is complex and has high processing cost. Utility Model Content

[0003] The utility model aims to provide a lifting and opening and closing device for a pulling rake of a flat knitting machine, aiming to solve the problems mentioned in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: it includes an installation box, wherein a plurality of lifting mechanisms that can slide up and down are arranged inside the installation box, a pulling unit is arranged on the lifting mechanism, the pulling unit can move up and down following the lifting mechanism, the upper end of the pulling unit can move between the inside and outside of the installation box, and a return spring for causing the upper end of the pulling unit to extend outside the installation box is also arranged between the lifting mechanism and the pulling unit; a driving assembly is arranged inside the installation box, and the driving assembly is used to control the upper end of the pulling unit to move inside and outside the installation box and to push the lifting mechanism to move upward.

[0005] Preferably, the lifting mechanism includes an installation groove arranged on the inner wall of the installation box, a fixing rod is arranged on the open side of the installation groove, a sliding seat is slidably connected to the fixing rod, and a tension spring for controlling the sliding seat to move downward is also arranged on the side of the sliding seat close to the inner wall of the installation box, the pulling unit is arranged on the sliding seat and hinged to the sliding seat, and a horizontal bar is arranged at the lower end of the sliding seat.

[0006] Preferably, it also includes an adjustment portion for controlling the tightness of the tension spring.

[0007] Preferably, the pulling unit includes a pulling rake and an opening and closing rod, a through groove is provided on the outer surface of the mounting box, the pulling rake can extend out of the mounting box through the through groove, the opening and closing rod is located at the lower end of the pulling rake, the sliding seat is hinged at the connection point between the pulling rake and the opening and closing rod, and the return spring is arranged at the hinge between the sliding seat and the pulling unit.

[0008] Preferably, it further comprises a limiting mechanism, wherein the limiting mechanism is used to control the lifting mechanism to move downward, and the limiting mechanism comprises a central shaft driven by a motor, and a receiving plate which can rotate along with the central shaft is arranged on the central shaft.

[0009] Preferably, the driving assembly includes a rotating shaft driven by a motor, an abutment portion is provided on the opening and closing rod, a deflection block is provided on the rotating shaft, a hook tooth is provided at the end of the deflection block, and the deflection block controls the abutment portion on the opening and closing rod through the hook tooth and pushes the opening and closing rod to rise.

[0010] Preferably, the abutment portion is a tooth-shaped protrusion arranged on the outer surface of the opening and closing rod.

[0011] Preferably, the abutment portion is a columnar protrusion arranged on the side of the opening and closing rod.

[0012] The beneficial effects of the utility model are:

[0013] By simplifying the structure of the lifting and opening and closing device of the flat knitting machine pulling rake and reducing the complexity of the overall structure, the processing cost can be effectively reduced and the processing efficiency can be improved. By controlling the continuous forward and reverse rotation of the rotating shaft, the space required for the rotation of the hook teeth can be reduced, the overall size of the installation box can be reduced, and material costs can be further saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model.

[0015] Figure 2 It is a schematic diagram of a specific embodiment of the utility model after the opening and closing rod is deflected.

[0016] Figure 3 It is a schematic diagram of the opening and closing rod of a specific embodiment of the utility model before deflection.

[0017] Figure 4 It is a partial view of a specific embodiment of the utility model after partial arrangement.

[0018] Figure 5 It is a schematic diagram of a columnar protrusion on an opening and closing rod according to a specific embodiment of the utility model.

[0019] Figure 6 It is a schematic diagram of the tooth-shaped protrusions on the opening and closing rod of a specific embodiment of the utility model.

[0020] Figure 7 It is a schematic diagram of the installation position of the return spring in a specific embodiment of the utility model.

[0021] Figure 8 It is a schematic diagram of a return spring according to a specific embodiment of the utility model.

[0022] In the figure: 1. installation box; 2. lifting mechanism; 201. installation slot; 202. fixing rod; 203. sliding seat; 204. tension spring; 205. horizontal bar; 3. pulling unit; 301. pulling rake; 302. opening and closing rod; 4. return spring; 5. columnar protrusion; 6. driving assembly; 601. rotating shaft; 602. deflection dial block; 603. hook tooth; 7. tooth-like protrusion; 8. limiting mechanism; 801. central axis; 802. receiving plate; 9. adjusting shaft; 10. rope body. DETAILED DESCRIPTION

[0023] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0024] like Figure 1-8 As shown, a lifting and opening and closing device of a pulling rake of a flat knitting machine includes an installation box 1, a plurality of lifting mechanisms 2 which can slide up and down are arranged inside the installation box 1, a pulling unit 3 is arranged on the lifting mechanism 2, the pulling unit 3 can move up and down following the lifting mechanism 2, the upper end of the pulling unit 3 can move between the inside and outside of the installation box 1, a return spring 4 for causing the upper end of the pulling unit 3 to extend outside the installation box 1 is also arranged between the lifting mechanism 2 and the pulling unit 3, and a driving assembly is arranged inside the installation box 1, and the driving assembly is used to control the upper end of the pulling unit 3 to move inside and outside the installation box 1 and to push the lifting mechanism 2 to move upward.

[0025] In this specific embodiment, the lifting mechanism 2 is composed of four groups as an installation unit and is fixedly installed in an installation box 1. A pulling unit 3 is provided on each individual lifting mechanism 2. The lifting mechanism 2 is used to drive the pulling unit 3 to move upward and downward. The return spring 4 is used to control the deflection of the pulling unit 3 on the lifting mechanism 2. When the return spring 4 is in the maximum compression state in the installation box 1, the upper end of the pulling unit 3 is completely located in the installation box 1; when the return spring 4 is in the minimum compression state in the installation box 1, the upper end of the pulling unit 3 The rake tooth part extends out of the installation box 1, and at this time, the return spring 4 pushes the lower end of the pulling unit 3 to deflect toward the direction close to the recovery mechanism 6.

[0026] Furthermore, the lifting mechanism 2 includes a mounting groove 201 arranged on the inner wall of the installation box 1, a fixed rod 202 is arranged on the open side of the mounting groove 201, a sliding seat 203 is slidably connected to at least two fixed rods 202, and a tension spring 204 for controlling the downward movement of the sliding seat 203 is also arranged on the side of the sliding seat 203 close to the inner wall of the installation box 1, the pulling unit 3 is arranged on the sliding seat 203 and is hinged to the sliding seat 203, and a horizontal bar 205 is arranged at the lower end of the sliding seat 203, and the sliding seat 203 can only move up and down on the fixed rod 202 and will not rotate, thereby ensuring that the upper end of the pulling unit 3 can stably extend out of the installation box 1, and one end of the tension spring 204 is fixedly connected to the sliding seat 203. An adjusting portion for controlling the tension of the tension spring 204 is provided at the bottom of the installation box 1, and the other end of the tension spring 204 is connected to the adjusting portion. The adjusting portion includes an adjusting shaft 9 arranged at the bottom of the installation box 1, and the adjusting shaft 9 can rotate back and forth in the installation box 1. The tension spring 204 and the adjusting shaft 9 are connected by a windable rope body 10. The more turns the rope body 10 is wound around the adjusting shaft 9, the greater the tension of the tension spring 204, and vice versa. When the sliding seat 203 moves upward, the tension spring 204 is in a stretched state. The tension spring 204 in the stretched state can provide a downward force for the sliding seat 203. When the driving assembly 6 moves downward away from the pulling unit 3, the tension spring 204 can drive the pulling unit 3 to move downward.

[0027] Furthermore, the pulling unit 3 includes a pulling rake 301 and an opening and closing rod 302. A through slot is provided on the outer surface of the installation box 1. The pulling rake 301 can extend out of the installation box 1 through the through slot. The opening and closing rod 302 is located at the lower end of the pulling rake 301. The sliding seat 203 is hinged at the connection point between the pulling rake 301 and the opening and closing rod 302. The return spring 4 is arranged at the hinge of the sliding seat 203 and the pulling unit 3. The upper end of the pulling rake 301 has a plurality of rake teeth. When the pulling rake 301 is in a vertical state, the pulling rake 301 is in a vertical state. When the rake is moved forward and backward, the teeth on the pulling rake 301 are located outside the installation box 1 and are tilted downward. When the opening and closing rod 302 and any part of the pulling rake 301 are in a vertical state, the other part is in a tilted state. With the cooperation of the rising and falling actions of the sliding seat 203, the pulling rake 301 can realize the actions of tilted forward raking and tilted backward raking. When the forward raking is completed, the teeth on the upper end of the pulling rake 301 are located outside the installation box 1. When the backward raking is completed, the teeth on the upper end of the pulling rake 301 are located inside the installation box 1.

[0028] Furthermore, it also includes a limiting mechanism 8, which is used to control the lifting mechanism 2 to move downward. The limiting mechanism 8 includes a central axis 801 driven by a motor, and a receiving plate 802 that can rotate with the central axis 801 is provided on the central axis 801. When the driving component 6 pushes the pulling rake 301 and the sliding seat upward through the opening and closing rod 302, it also drives the horizontal bar 205 located at the bottom of the sliding seat 203 to move upward. When the horizontal bar 205 moves to the top of the receiving plate 802, the central axis 801 is driven by the motor to rotate, and the central axis 801 drives the receiving plate 802 to rotate a certain angle, so that the receiving plate 802 is moved to the bottom of the horizontal bar 205, and the driving component 6 is controlled to be out of contact with the opening and closing rod 302. At this time, it is on the opening and closing rod 302. The pulling rake 301 extends out of the installation box 1 under the action of the return spring 4 and contacts the fabric outside the installation box 1. At the same time, the receiving plate 802 is controlled to rotate in the opposite direction through the central axis 801, and the receiving plate 802 moves away from the bottom of the horizontal bar 205. At this time, under the self-gravity of the sliding seat 203 and the tension of the tension spring 204, the pulling rake 301 and the opening and closing rod 302 can be driven to move downward, and a downward pulling force is provided to the fabric outside the installation box 1 that contacts the pulling rake 301. When the driving assembly 6 leaves the opening and closing rod, the receiving plate 802 can keep the pulling rake 301 at a certain height to complete the hanging rake action, so that the pulling rake 301 will not fall together with the driving assembly 6, ensuring that the pulling rake 301 has sufficient stroke for doing work.

[0029] Furthermore, the driving assembly 6 includes a rotating shaft 601 driven by a motor, an abutment portion is provided on the opening and closing rod 302, a deflection dial block 602 is provided on the rotating shaft 601, and a hook tooth 603 is provided at the end of the deflection dial block 602. The deflection dial block 602 abuts against the abutment portion on the opening and closing rod 302 through the hook tooth 603, and pushes all the opening and closing rods 302 to deflect and rise. The motor controls the rotation of the rotating shaft 601 through a gear reducer, or the motor controls the rotation of the rotating shaft 601 through a pulley. When the rotating shaft 601 rotates, the rake teeth at the upper ends of all the pulling rakes 301 can be controlled to be uniformly retracted into the installation box 1 through the deflection block 602, the hook teeth 603 and the opening and closing rod 302. When the rake teeth at the upper ends of the pulling rakes 301 are uniformly retracted into the installation box 1, the rotating shaft 601 is controlled to reverse. Under the action of the gravity of the sliding seat 203 and the tension spring 204, the upper end of the pulling rake 301 moves downward after moving outward to complete the hanging rake, and provides a downward pulling force to the fabric.

[0030] The deflection block 602 and the hook tooth 603 can be replaced by a sheet metal part bent into an L shape.

[0031] Furthermore, the abutting portion is a tooth-shaped protrusion 7 provided on the outer surface of the opening and closing rod 302 , and the deflection and rise of the opening and closing rod 302 can be controlled by the abutment between the hook teeth 603 and the tooth-shaped protrusion 7 .

[0032] Furthermore, the abutment portion is a columnar protrusion 5 provided on the side of the opening and closing rod 302 , and the deflection and rise of the opening and closing rod 302 can be controlled by the cooperation between the hook teeth 603 and the columnar protrusion 5 .

[0033] When the pulling rake 301 needs to be raised again and the fabric needs to be hung on the rake after working for a period of time, the reciprocating rotation of the deflection dial block 602 and the reciprocating rotation of the receiving plate 802 need to be repeated. The deflection dial block 602 is installed in an array on the same plane. Therefore, when the deflection dial block 602 raises the opening and closing rod 302, all the pulling rakes 301 will be retracted into the installation box 1, so that the pulling rake 301 is separated from the fabric, and the fabric is in a state without tension. Therefore, in order to optimize the working efficiency of the pulling rake 301 and not affect the machine weaving, the actions of raising the rake and hanging the rake are all set by the system in the time gap between the end of a head stroke of the computer flat knitting machine and the rotation of the head when a new head stroke is about to start. If necessary, the head rotation time can be appropriately extended.

[0034] By simplifying the structure of the lifting and opening and closing device of the flat knitting machine pulling rake 301 and reducing the complexity of the overall structure, the processing cost can be effectively reduced and the processing efficiency can be improved. By controlling the continuous forward and reverse rotation of the rotating shaft 601, the space required for the rotation of the hook teeth can be reduced, the overall size of the installation box 1 can be reduced, and material costs can be saved.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A lifting and opening and closing device for a flat knitting machine pulling rake, characterized in that: The invention comprises an installation box (1), wherein a plurality of lifting mechanisms (2) capable of sliding up and down are arranged inside the installation box (1), a pulling unit (3) is arranged on the lifting mechanism (2), the pulling unit (3) can move up and down following the lifting mechanism (2), the upper end of the pulling unit (3) can move between the inside and outside of the installation box (1), a return spring (4) for causing the upper end of the pulling unit (3) to extend outside the installation box (1) is also arranged between the lifting mechanism (2) and the pulling unit (3), and a driving component (6) is arranged inside the installation box (1), and the driving component (6) is used to control the upper end of the pulling unit (3) to move inside and outside the installation box (1) and to push the lifting mechanism (2) to move upward.

2. The lifting and opening and closing device of the flat knitting machine pulling rake according to claim 1 is characterized in that: The lifting mechanism (2) comprises a mounting groove (201) arranged on the inner wall of the mounting box (1); a fixing rod (202) is arranged on the open side of the mounting groove (201); a sliding seat (203) is slidably connected to the fixing rod (202); a tension spring (204) for controlling the sliding seat (203) to move downward is also arranged on the side of the sliding seat (203) close to the inner wall of the mounting box (1); the pulling unit (3) is arranged on the sliding seat (203) and is hinged to the sliding seat (203); and a horizontal bar (205) is arranged at the lower end of the sliding seat (203).

3. The lifting and opening and closing device of the flat knitting machine pulling rake according to claim 2 is characterized in that: It also includes an adjustment portion for controlling the tightness of the tension spring (204).

4. The lifting and opening and closing device of the flat knitting machine pulling rake according to any one of claims 2-3, characterized in that: The pulling unit (3) comprises a pulling rake (301) and an opening and closing rod (302); a through slot is provided on the outer surface of the installation box (1); the pulling rake (301) can extend out of the installation box (1) through the through slot; the opening and closing rod (302) is located at the lower end of the pulling rake (301); the sliding seat (203) is hinged at the connection point between the pulling rake (301) and the opening and closing rod (302); and the return spring (4) is arranged at the hinge between the sliding seat (203) and the pulling unit (3).

5. The lifting and opening and closing device of the flat knitting machine pulling rake according to any one of claims 2-3, characterized in that: The invention also comprises a limiting mechanism (8), wherein the limiting mechanism (8) is used to control the lifting mechanism (2) to move downward, and the limiting mechanism (8) comprises a central axis (801) driven by a motor, and a receiving plate (802) is arranged on the central axis (801) and can rotate along with the central axis (801).

6. The lifting and opening and closing device of the flat knitting machine pulling rake according to claim 4 is characterized in that: The driving assembly (6) comprises a rotating shaft (601) driven by a motor, an abutment portion is arranged on the opening and closing rod (302), a deflection block (602) is arranged on the rotating shaft (601), a hook tooth (603) is arranged at the end of the deflection block (602), and the deflection block (602) controls the abutment portions on all the opening and closing rods (302) through the hook tooth (603) and pushes the opening and closing rods (302) to rise.

7. The lifting and opening and closing device of the flat knitting machine pulling rake according to claim 6 is characterized in that: The abutment portion is a tooth-shaped protrusion (7) arranged on the outer surface of the opening and closing rod (302).

8. The lifting and opening and closing device of the flat knitting machine pulling rake according to claim 6 is characterized in that: The abutment portion is a columnar protrusion (5) arranged on the side of the opening and closing rod (302).

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