Computerized flat knitting machine with waste yarn free inlay device

Abstract

The application discloses a computerized flat knitting machine waste yarn free base raising device and belongs to the technical field of computerized flat knitting machines. The device solves the problem of yarn drawing and feeding control. The technical scheme is as follows: a driving motor, a machine base, a machine shell, a yarn feeding assembly and a yarn collecting assembly are arranged on the machine shell and are respectively provided with yarn feeding gears and yarn collecting gears; the motor is installed on the machine base and the motor shaft extends into the machine base; a clutch gear assembly is arranged between the yarn feeding gears and the yarn collecting gears; the clutch gear assembly is driven by the motor shaft; the yarn feeding gears are driven alone when the motor shaft rotates forward; and the yarn collecting gears are driven alone when the motor shaft rotates reversely. The effective clutch control is achieved, and the control is stable and reliable.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of computerized flat knitting machines, and in particular, to a computerized flat knitting machine without waste yarn in the process of starting. BACKGROUND

[0002] In order to complete the subsequent knitting, the computerized flat knitting machine must have a pull on the knitted fabric such as a garment piece, i.e. only in the pulling state can the knitting proceed smoothly. Since the general computerized flat knitting machine is not equipped with a starting board, before entering the formal knitting of the garment piece, a starting fabric of about 30-60 rows and about 20-30 mm in length is first knitted using waste yarn. After the starting fabric is captured by the vice roller (configured in pairs) of the cloth winding mechanism under the needle bed, it can enter the formal knitting stage of the garment piece. Therefore, each garment piece needs to be transitioned by the aforementioned 20-30 mm of starting fabric, which not only causes serious waste, but also affects work efficiency.

[0003] Therefore, people have configured a starting board device on the computerized flat knitting machine, which generally includes a starting board, a driving mechanism for driving the starting board to move up and down, and a steel wire pumping device. The starting board includes a board body and a plurality of starting needles with needle holes on the top of the board body. The plurality of starting needles are arranged in a straight line at intervals. The steel wire pumping device is used to pass the steel wire through the perforations of each starting needle or to pump back the steel wire passing through each perforation. The structure of the steel wire pumping device is also diversified, such as the pumping mechanism disclosed in the documents with Chinese patent application publication numbers CN1101117871A and CN212335461U. With the above-mentioned starting board device, no waste yarn is generated during the starting knitting process, thus not only saving costs, but also improving the work efficiency of the flat knitting machine.

[0004] The existing waste yarn-free starting board device has an unreasonable overall structure arrangement, a large overall volume, and wastes space. The wire pulling and feeding operation cannot be completed by one motor. SUMMARY

[0005] The present application aims to solve the technical problems in the related art to at least some extent, and provides a computerized flat knitting machine without waste yarn in the process of starting, which has the advantages of small structure and reliable operation.

[0006] In order to solve the above technical problems, the technical scheme of the present application is: a computerized flat knitting machine waste yarn starting device, comprising a driving motor, a machine base, a machine housing, a yarn feeding assembly, a yarn collecting assembly, the yarn feeding assembly and the yarn collecting assembly are arranged on the machine housing and are respectively provided with a yarn feeding gear and a yarn collecting gear, the motor is installed on the machine base and the motor shaft is extended into the machine base, a clutch gear assembly is arranged between the yarn feeding gear and the yarn collecting gear, the clutch gear assembly is driven by the motor shaft, the yarn feeding gear is driven alone when the motor shaft rotates forward, and the yarn collecting gear is driven alone when the motor shaft reverses.

[0007] Preferably, the clutch gear assembly comprises a gear frame, a driving gear, a first driven gear and a second driven gear, the gear frame is rotationally connected to the machine housing, the two ends of the gear frame are respectively rotationally connected to the first driven gear and the second driven gear, and the driving gear is coaxial with the rotation shaft of the gear frame and simultaneously engages the first driven gear and the second driven gear.

[0008] Preferably, at least one damping device is arranged on the gear frame, the damping device comprises a first spring, a screw and a ball, a shaft hole is arranged in the middle of the gear frame for the motor shaft to extend into, a channel is arranged on the gear frame and communicates with the shaft hole, the ball, the first spring and the screw are arranged in the channel, the screw is fixed on the channel and abuts against the end of the first spring for tightly abutting the ball against the motor shaft.

[0009] Preferably, an even number of damping devices are arranged and are located at the two ends of the diameter of the cross section of the motor shaft.

[0010] Preferably, the yarn collecting assembly further comprises a yarn collecting disc, the yarn collecting disc is located on the front face of the machine housing and is coaxially connected with the yarn collecting gear located on the back face of the machine housing, the back face of the yarn collecting disc forms a winding space for winding the steel wire, a stroke detection assembly is arranged on the machine housing at the winding space, and the stroke detection assembly is used for measuring the winding length of the steel wire.

[0011] Preferably, the stroke detection assembly comprises a sleeve, a top rod, a second spring and a sensor module, the top end of the top rod is provided with a pin rod, a slide is arranged on the machine housing, the sleeve is fixed on the slide and is sleeved on the top rod for the extension and contraction of the top rod, the second spring is sleeved on the top rod for abutting the end of the top rod against the steel wire, and the sensor module is located at the rear end of the top rod.

[0012] Preferably, the wire feeding assembly further comprises a transmission gear, a variable speed gear, a linkage gear, a second gear frame, a first wire feeding roller and a second wire feeding roller, the transmission gear is engaged with the second driven gear and the variable speed gear respectively, the variable speed gear is further engaged with the wire feeding gear, the wire feeding gear is engaged with the linkage gear, the linkage gear is rotatably installed on the second gear frame, one end of the second gear frame is rotatably installed on the casing, the second gear frame and the casing are connected through a tension spring for abutting the linkage gear and the wire feeding gear, the first wire feeding roller is coaxially connected with the wire feeding gear, and the second wire feeding roller is coaxially connected with the linkage gear.

[0013] Preferably, the casing is provided with a limiting assembly, the limiting assembly comprises a thrust spring, a push block and a limiting roller, one end of the thrust spring is fixed on the casing and the other end is fixed on the push block, and the limiting roller is rotatably connected on the push block and abuts against the circumferential surface of the wire collecting disc.

[0014] Preferably, the wire collecting disc is further provided with a wire collecting spiral groove in the winding space.

[0015] Compared with the background art, the technical effects of the present application mainly lie in the following aspects:

[0016] 1. The overall structure is reasonable and compact, and the inertia of the motor shaft and the gear frame can be used to control the clutching action of the gear frame, so that the clutch gear assembly is driven by the motor shaft, the wire feeding gear is driven alone when the motor shaft rotates forward, and the wire collecting gear is driven alone when the motor shaft reverses;

[0017] 2. The retracted steel wire and the conveying steel wire are controlled by the forward or reverse rotation of the driving motor, thereby improving the compactness of the structure, and the inertia clutching principle is used, and the damping force can be controlled to adjust the sensitivity, which is convenient to use;

[0018] 3. In the working process, it is very stable and reliable, and the failure rate is low, so that it can be used for a long time. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the overall structure schematic diagram in the embodiment;

[0020] Figure 2 It is the front structure schematic diagram after removing the cover plate in the embodiment;

[0021] Figure 3 It is the back structure explosion diagram in the embodiment;

[0022] Figure 4 It is the front structure explosion diagram in the embodiment;

[0023] Figure 5 It is the side structure schematic diagram;

[0024] Figure 6 It isFigure 5 A-A sectional view;

[0025] Figure 7 Structure explosion schematic diagram of stroke detection assembly;

[0026] Figure 8 Structure schematic diagram of the other side of the wire feeding disc, mainly showing the wire feeding stroke control.

[0027] Reference signs: 1, driving motor; 11, motor shaft; 2, machine base; 3, machine shell; 4, wire feeding assembly; 40, wire feeding gear; 41, transmission gear; 42, variable speed gear; 43, linkage gear; 44, second gear frame; 45, first wire feeding roller; 46, second wire feeding roller; 47, tension spring; 5, wire collecting assembly; 50, wire collecting gear; 51, wire collecting disc; 510, wire collecting spiral groove; 52, winding space; 53, stroke detection assembly; 531, sleeve; 532, ejector rod; 533, second spring; 534, sensor module; 535, pin rod; 536, slide; 537, magnet; 6, clutch gear assembly; 61, gear frame; 62, driving gear; 63, first driven gear; 64, second driven gear; 65, damping device; 651, first spring; 652, screw; 653, ball; 654, channel; 7, limit assembly; 71, thrust spring; 72, push block; 73, limit roller; 8, cover plate. DETAILED DESCRIPTION

[0028] The following will be further described in detail in combination with the accompanying drawings Figures 1-7 The specific embodiments of the present application are further described in detail to make the technical scheme of the present application easier to understand and master. EMBODIMENT

[0029] A computerized flat knitting machine waste yarn starting device, referring to Figure 1 and Figure 2 , includes a driving motor 1, a machine base 2, a machine shell 3, a wire feeding assembly 4, and a wire collecting assembly 5. A cover plate 8 is also installed on the front face of the machine shell 3. The cover plate 8 can close the overall structural opening and can be made of transparent material, such as acrylic plate. The cover plate 8 can be light-transmitting, so that the working conditions of the wire feeding assembly 4 and the wire collecting assembly 5 can be observed, facilitating maintenance and maintenance. The driving motor 1 can be a servo motor or the like.

[0030] Specifically, referring to Figure 2 and Figure 3In the embodiment, the wire feeding assembly 4 and the wire collecting assembly 5 are arranged on the machine shell 3 and are respectively provided with a wire feeding gear 40 and a wire collecting gear 50, the motor is arranged on the machine base 2 and extends the motor shaft 11 into the machine base 2, the clutch gear assembly 6 is arranged between the wire feeding gear 40 and the wire collecting gear 50, and the clutch gear assembly 6 is driven by the motor shaft 11 to drive the wire feeding gear 40 alone when the motor shaft 11 rotates in the positive direction and to drive the wire collecting gear 50 alone when the motor shaft 11 rotates in the reverse direction.

[0031] In order to achieve the clutch control purpose of the present application, the clutch gear assembly 6 comprises a gear frame 61, a driving gear 62, a first driven gear 63 and a second driven gear 64. The gear frame 61 is rotationally connected to the machine shell 3, the two ends of the gear frame 61 are respectively rotationally connected to the first driven gear 63 and the second driven gear 64, and the driving gear 62 is coaxial with the rotation shaft of the gear frame 61 and simultaneously engages the first driven gear 63 and the second driven gear 64. The driving motor 1 can directly drive the driving gear 62 to rotate in the positive direction or in the reverse direction. When rotating in the positive direction, the gear frame 61 is subjected to a positive rotation force, so that the first driven gear 63 is engaged and driven to transmit the torque to the wire feeding gear 40 when the driving motor 1 is started. Conversely, when the motor shaft 11 of the driving motor 1 rotates in the reverse direction, the gear frame 61 is subjected to a reverse force and swings, so that the transmission of the first driven gear 63 is separated and the second driven gear 64 is engaged to transmit the torque to the wire feeding assembly 4.

[0032] In order to control the reliability and stability of the clutch, it is necessary to continuously adjust and overcome the friction and other load forces in the clutch process. Therefore, the damping device 65 is arranged on the basis of the above structure. Specifically, the damping device 65 is arranged on the gear frame 61. Figure 5 and Figure 6 It is understood that at least one damping device 65 is arranged on the gear frame 61. The damping device 65 comprises a first spring 651, a screw 652 and a ball 653. The gear frame 61 is provided with a shaft hole for the motor shaft 11 to extend into, and the gear frame 61 is provided with a channel 654 communicating with the shaft hole. The channel 654 is provided with the ball 653, the first spring 651 and the screw 652. The screw 652 is fixed on the channel 654 and abuts against the end of the first spring 651 to tightly abut the ball 653 against the motor shaft 11. The screw 652 is a flat head hexagonal screw 652, which can control the compression amount of the first spring 651 by adjusting the fixed position of the screw 652. The ball 653 is squeezed by the spring, which can rotate with the motor shaft 11 and can be relatively fixed with the motor shaft 11, and is controlled by the friction and inertial force. When the motor shaft 11 starts to rotate at a low speed, the gear frame 61 is tightly subjected to the force of the ball 653, so that the gear frame 61 can be driven by the motor shaft 11. When the motor shaft 11 rotates at a high speed, the ball 653 slides relative to the motor shaft 11.

[0033] In order to effectively adjust and to adapt and to facilitate maintenance, the damping device 65 is arranged in an even number and at both ends of the diameter of the cross section of the motor shaft 11. In this way, the size of the resistance can be controlled to meet the actual operation debugging requirements. The arrangement is symmetrical, so as to be symmetrical in stress, facilitating debugging.

[0034] In combination Figure 7 It can be seen that the wire collecting assembly 5 further comprises a wire collecting disc 51, which is located on the front face of the casing 3 and coaxially connected with the wire collecting gear 50 located on the back face of the casing 3. The back face of the wire collecting disc 51 forms a winding space 52 for winding the steel wire. The casing 3 is provided with a stroke detection assembly 53 at the winding space 52, which is used to measure the winding length of the steel wire. The back face of the wire collecting disc 51 winds the steel wire, and the winding length or the length sent out of the steel wire can be detected by the above-mentioned stroke detection assembly 53. A wire collecting spiral groove 510 is arranged on the other face of the wire collecting disc 51, which limits the steel wire to ensure that the stroke detection assembly 53 can measure when the steel wire is wound.

[0035] The specific structure is that the stroke detection assembly 53 comprises a sleeve 531, a top rod 532, a second spring 533, and a sensor module 534. The top end of the top rod 532 is provided with a pin 535, the casing 3 is provided with a slide 536, the sleeve 531 is fixed on the slide 536 and sleeved on the top rod 532 for the extension and retraction of the top rod 532, the second spring 533 is sleeved on the top rod 532 for abutting the end of the top rod 532 against the steel wire, and the sensor module 534 is located at the rear end of the top rod 532. The rear end of the top rod 532 is embedded with a magnet 537, and the sensor module 534 is a Hall sensor for sensing the proximity of the magnet. According to the action of the top rod 532, when the steel wire is wound more (the number of turns is more), the top rod 532 will be pushed out in the radial direction, so as to measure or sense the position (or length) of the top rod 532 pushed out through the sensor, and then calculate through the computer. The timing of the forward and reverse switching control of the driving motor 1 can be realized through the sensor module 534. For example, after the wire collecting disc 51 winds 5 turns, the sensor module 534 senses and triggers, and then the driving motor 1 is controlled to reverse through an external controller, so as to send the wire. When the wire is sent to a certain extent, the lower limit trigger signal of the sensor module 534 is triggered, and then the wire is collected again. In this way, the wire is sent and collected alternately, and the length of the wire sent can be adjusted and controlled.

[0036] In Figure 3 And Figure 6The wire feeding assembly 4 further comprises a transmission gear 41, a gear shift 42, a linkage gear 43, a second gear frame 44, a first wire feeding roller 45 and a second wire feeding roller 46. The transmission gear 41 is engaged with the second driven gear 64 and the gear shift 42 respectively. The gear shift 42 is further engaged with the wire feeding gear 40. The wire feeding gear 40 is engaged with the linkage gear 43. The linkage gear 43 is rotatably installed on the second gear frame 44. One end of the second gear frame 44 is rotatably installed on the casing 3. The second gear frame 44 and the casing 3 are connected by a tension spring 47 for abutting the linkage gear 43 and the wire feeding gear 40. The first wire feeding roller 45 is coaxially connected with the wire feeding gear 40. The second wire feeding roller 46 is coaxially connected with the linkage gear 43.

[0037] Therefore, the transmission gear 41 realizes transmission, and the gear shift 42 realizes gear shifting. Then the first wire feeding roller 45 and the second wire feeding roller 46 can clamp and feed the steel wire. The tension spring 47 increases the friction force, so that the wire feeding is more stable and reliable.

[0038] On the basis of the above structure, the casing 3 is provided with a limiting assembly 7. The limiting assembly 7 comprises a thrust spring 71, a push block 72 and a limiting roller 73. One end of the thrust spring 71 is fixed on the casing 3 and the other end is fixed on the push block 72. The limiting roller 73 is rotatably connected on the push block 72 and abuts against the circumferential surface of the wire collecting disc 51. The limiting assembly 7 can effectively wind the steel wire and avoid the deviation of the steel wire.

[0039] Therefore, the technical advantage of the above structure lies in that the overall structure is reasonably and compactly arranged. The inertia of the motor shaft 11 and the gear frame 61 can be used to control the clutching action of the gear frame 61, so that the clutch gear assembly 6 is driven by the motor shaft 11. When the motor shaft 11 rotates forward, the wire feeding gear 40 is driven alone. When the motor shaft 11 reverses, the wire collecting gear 50 is driven alone. The contraction of the steel wire and the feeding of the steel wire are controlled by the forward or reverse rotation of the driving motor 1, so as to improve the compactness of the structure. The inertia clutching principle can be used to control the size of the damping force to adjust the sensitivity, which is convenient to use. In the working process, it is very stable and reliable, and the failure rate is low, so as to be used for a long time.

[0040] Of course, the above is only a typical example of the present application. In addition to this, the present application can have other various specific embodiments. Any technical solution formed by equivalent substitution or equivalent transformation falls within the scope of the present application.

Claims

1. A waste-free yarn raising device for a computerized flat knitting machine, comprising a drive motor (1), a machine base (2), a machine housing (3), a yarn feeding assembly (4), and a yarn taking-up assembly (5), wherein the yarn feeding assembly (4) and the yarn taking-up assembly (5) are mounted on the machine housing (3) and respectively have a yarn feeding gear (40) and a yarn taking-up gear (50), and the motor is mounted on the machine base (2) with its motor shaft (11) extending into the machine base (2), characterized in that: The wire feeding gear (40) and the wire collecting gear (50) are provided with a clutch gear assembly (6) driven by the motor shaft (11), which drives the wire feeding gear (40) alone when the motor shaft (11) rotates forwardly, and drives the wire collecting gear (50) alone when the motor shaft (11) reverses; the clutch gear assembly (6) comprises a gear frame (61), a driving gear (62), a first driven gear (63) and a second driven gear (64), the gear frame (61) is rotationally connected to the casing (3), the two ends of the gear frame (61) are rotationally connected to the first driven gear (63) and the second driven gear (64) respectively, and the driving gear (62) is coaxial with the rotation shaft of the gear frame (61) and simultaneously engages the first driven gear (63) and the second driven gear (64); at least one damping device (65) is arranged on the gear frame (61), the damping device (65) comprises a first spring (651), a screw (652) and a ball (653), the middle of the gear frame (61) is provided with a shaft hole for the motor shaft (11) to extend into, the gear frame (61) is provided with a channel (654) communicating with the shaft hole, the ball (653), the first spring (651) and the screw (652) are arranged in the channel (654), the screw (652) is fixed on the channel (654) and abuts against the end of the first spring (651) for tightly abutting the ball (653) against the motor shaft (11); the damping device (65) is provided with an even number of damping devices and is arranged at the two ends of the diameter of the cross section of the motor shaft (11); the wire collecting assembly (5) further comprises a wire collecting disc (51), which is coaxially connected to the wire collecting gear (50) located on the back of the casing (3) and located on the front of the casing (3), the back of the wire collecting disc (51) forms a winding space (52) for winding the steel wire, and the casing (3) is provided with a stroke detection assembly (53) at the winding space (52), which is used for measuring the winding length of the steel wire.

2. The computerized flat knitting machine with a waste yarn free undercasting device according to claim 1, characterized in that: The stroke detection assembly (53) comprises a sleeve (531), a top rod (532), a second spring (533) and a sensor module (534), the top end of the top rod (532) is provided with a pin rod (535), the casing (3) is provided with a slide (536), the sleeve (531) is fixed on the slide (536) and sleeved on the top rod (532) for the extension and contraction of the top rod (532), the second spring (533) is sleeved on the top rod (532) for abutting the end of the top rod (532) against the steel wire, and the sensor module (534) is located at the rear end of the top rod (532).

3. The bottom forming device of the computerized flat knitting machine without waste yarn according to any one of claims 1-2, characterized in that: The wire feeding assembly (4) further comprises a transmission gear (41), a gear shift gear (42), a linkage gear (43), a second gear frame (44), a first wire feeding roller (45) and a second wire feeding roller (46), the transmission gear (41) is engaged with the second driven gear (64) and the gear shift gear (42) respectively, the gear shift gear (42) is further engaged with the wire feeding gear (40), the wire feeding gear (40) is engaged with the linkage gear (43), the linkage gear (43) is rotatably installed on the second gear frame (44), one end of the second gear frame (44) is rotatably installed on the machine shell (3), the second gear frame (44) and the machine shell (3) are connected through the tension spring (47) for abutting the linkage gear (43) and the wire feeding gear (40), the first wire feeding roller (45) is coaxially connected with the wire feeding gear (40), and the second wire feeding roller (46) is coaxially connected with the linkage gear (43).

4. The apparatus according to claim 1, wherein: the apparatus further comprises a yarn waste collecting device. The machine shell (3) is provided with a limiting assembly (7), the limiting assembly (7) comprises a thrust spring (71), a push block (72) and a limiting roller (73), one end of the thrust spring (71) is fixed on the machine shell (3) and the other end is fixed on the push block (72), the limiting roller (73) is rotatably connected on the push block (72) and abuts against the circumferential surface of the wire collecting disc (51).

5. The waste-free yarn raising device for a computerized flat knitting machine according to claim 1, characterized in that: The wire collecting disc (51) is further provided with a wire collecting spiral groove (510) in the winding space (52).

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