A warp knitting machine with double-sided drive of comb bed assembly

Abstract

The present invention relates to the field of knitting machinery, and specifically to a warp knitting machine with a double-sided drive of a comb bed assembly, comprising a frame and a comb bed assembly mounted on the frame, a main shaft 1, a main shaft 2, and a motor 1 as a power, wherein one axial end of the main shaft 1 is transmission-connected to an output end of the motor 1, the main shaft 1 is provided with 3-6 synchronously rotating cams 1, each of which is pivotally connected to a comb bed assembly swing arm through a transmission device 1; the main shaft 2 is provided with 3-6 synchronously rotating cams 2, each of which is pivotally connected to a swing arm on the other side of the comb bed assembly through a transmission device 2, each of which has the same circumferential profile along the circumferential direction as each of which is 180 degrees out of phase with each other, and the two main shafts are synchronized through a synchronization mechanism. The present invention is applied to warp knitting machine equipment, and provides a comb bed assembly swing device suitable for high-speed production.

Description

Technical Field

[0001] The invention relates to the field of knitting machinery, and in particular to a warp knitting machine with a double-sided driven comb bed assembly. Background Art

[0002] The Jacquard warp knitting machine is a warp knitting machine with a Jacquard device, including a loop forming device, a comb device, and a transmission device. The Jacquard device is mainly used to drive the Jacquard needles to knit patterns. The knitted patterns can be very large and the shapes are not restricted. Among them, the loop forming device includes symmetrical front and rear loop undoing parts, symmetrical front and rear needle bed parts, and symmetrical front and rear sinking parts; the comb device includes a comb bed assembly, a comb seat dynamically connected to the middle of the comb bed assembly, the upper end of the comb bed assembly is suspended on the upper swing shaft of the frame, and a comb is installed on the comb bed assembly, and a yarn guide needle is connected to the comb bed assembly; the transmission device includes front and rear needle bed transmission mechanisms corresponding to the front and rear needle bed parts, front and rear sinking transmission mechanisms corresponding to the front and rear sinking parts, and the comb bed assembly upper swing transmission mechanism and the comb bed assembly lower swing transmission mechanism.

[0003] like Figure 1 As shown, it includes a comb bed assembly 1', an upper swing mechanism 2', and a lower swing mechanism 3', wherein the lower swing mechanism 3' is a high-speed swing, driving the comb bed assembly 1' to rotate around the lower swing shaft 11' as the center, and it is controlled to move by the lower swing rod 31' of the lower swing mechanism 3', and the end 32' of the lower swing rod 31' is hinged to the comb bed assembly 1'. Under this structure, the comb bed assembly 1' has a large swing amplitude, especially the two comb bars near the outer side, which often affect the quality of the output product due to the excessive swing amplitude;

[0004] In order to avoid or reduce the occurrence of the above situation, the upper swing mechanism 2' is set as a low-speed swing to drive the entire comb bed assembly 1' to rotate around the upper swing shaft 21' to compensate for the swing amplitude of the comb bed assembly 1'.

[0005] Under this structure, there are the following disadvantages:

[0006] 1. The overall structure of the equipment is complex. When adjusting the swing of the comb bed assembly, the upper swing mechanism 2' and the lower swing mechanism 3' need to be adjusted to cooperate with each other, which is inconvenient to adjust;

[0007] 2. Since the operation mechanism of the upper swing mechanism 2' and the lower swing mechanism 3' is to compensate each other, there is a situation where the upper swing mechanism 2' and the lower swing mechanism 3' are subjected to uneven forces, and the overall stability of the equipment is reduced;

[0008] 3. It is precisely because the upper swing mechanism 2' and the lower swing mechanism 3' are subjected to uneven forces that the upper swing mechanism 2', which is the main force, is subjected to a larger load.

[0009] A further improvement to the existing equipment is to eliminate the slow swing of the warp knitting machine. After the slow swing is eliminated, the opening of the groove plate is reduced, and the thickness of the fabric is reduced accordingly. Since more than 90% of the fabric can be realized without the slow swing, this cancellation is acceptable. However, for a warp knitting machine with a single-sided comb swing mechanism that eliminates the slow swing, when the main machine speed reaches 1000 rpm, the inertial force of the reciprocating parts of the main machine is unbalanced, which has a great impact on the vibration of the frame and even causes the displacement or resonance of the main machine. At the same time, when the various parts of the machine tool vibrate greatly, the life of the main machine is significantly reduced, and the yarn path is unstable during the weaving process, which is easy to cause missed stitches or broken yarn. Summary of the invention

[0010] Therefore, the present invention provides a double-sided driven comb bed assembly swing device, which solves the problem of insufficient stability of the comb part of the existing warp knitting machine when running at high speed.

[0011] To achieve the above object, the present invention is achieved through the following technical solutions:

[0012] A warp knitting machine with a double-sided drive of a comb bed assembly, comprising a frame and a comb bed assembly mounted on the frame, a main shaft 1, a main shaft 2 and a motor 1 as a power source, characterized in that: one axial end of the main shaft 1 is transmission-connected to the output end of the motor 1, the main shaft 1 is provided with 3-6 synchronously rotating cams 1, each of which is pivotally connected to a swing arm of the comb bed assembly through a transmission device 1; the main shaft 2 is provided with 3-6 synchronously rotating cams 2, each of which is pivotally connected to a swing arm on the other side of the comb bed assembly through a transmission device 2, each of the cams 1 and each of the cams 2 have the same circumferential profile along the circumferential direction, and The two are 180 degrees out of phase with each other, and the two main shafts are synchronized through a synchronization mechanism. A swing shaft is mounted on the frame above the comb bed assembly, and the comb bed assembly is pivotally connected to the swing shaft through two connecting rods. The transmission device 1 and the transmission device 2 respectively include a swing rod, a connecting arm and a connecting rod, one end of the swing rod is connected to one end of the swing arm, and the other end of the swing rod is pivotally mounted on the connecting arm, and the connecting arm is fixed on a rotating shaft rotatably mounted on the frame, one end of the connecting rod is transmission-connected to cam 1 or cam 2, and the other end of the connecting rod is transmission-connected to the rotating shaft.

[0013] Preferably, the synchronization mechanism is a synchronization wheel installed on the first main shaft and the second main shaft and a synchronization belt wound around the synchronization wheel.

[0014] Preferably, the main shaft 2 is transmission-connected to the output end of the motor 2, and the motor 1 and the motor 2 have the same specifications.

[0015] Preferably, the connecting arm is provided with two or more circular arc mounting grooves, and a joint is provided at one end of the rocker arm fixed to the connecting arm. A bearing is provided on the joint, and a pin is installed in the bearing. Both ends of the pin are fixed in the circular arc mounting groove by screws.

[0016] Preferably, one end of the swing arm connected to the swing rod is provided with a plurality of mounting adjustment holes, and the swing rod is mounted on one of the mounting adjustment holes.

[0017] By adopting the above technical solution, the beneficial effects of the present invention are:

[0018] The present invention is designed according to the basic structure of the existing warp knitting machine. Comb swing mechanisms are arranged on both sides of the comb bed assembly. At the same time, the two comb swing mechanisms are strictly synchronously driven through the main shaft synchronization mechanism and the cam synchronization mechanism, so that the comb bed swings strictly synchronously, so that the warp knitting machine can run stably at a speed of 1000 revolutions or even higher, the equipment has small vibration, the yarn path is stable, the force on both sides of the comb bed is uniform, and it is not easy to generate resonance; of course, this modification is not simply to change the comb swing mechanism from a single-side drive to a double-side drive. The drive is only a result. The core is to build a problem-solving idea and direction, and solve the strict synchronization problem faced by the double-side swing drive based on this idea. Specifically, it is necessary to synchronize the two main shafts in the frame and the two swing mechanisms at the same time. If the synchronization of the main shaft or the synchronization of the swing mechanism is not handled well, the change from a single-side drive to a double-side drive will not only fail to increase the speed, but the reaction force of the two swing mechanisms on each transmission mechanism will cause the warp knitting machine to be worse than the single-side drive and run at a lower speed.

[0019] At the same time, because the transmission parts of the comb bars on both sides are evenly stressed, the vibration of the equipment is reduced during operation, the overall noise of the machine is reduced, and the noise pollution to the working environment is reduced;

[0020] Since the comb bed assembly adopts bilateral synchronous transmission and uniform power, it is easier to achieve high-speed operation of the equipment, meet the production needs of high-speed weaving, and greatly improve production efficiency. The spindle speed can run stably at more than 1000 revolutions. For equipment users, the production profit margin increases nearly three times based on the increase in speed, and the increase in economic benefits is very obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the swing mechanism of the comb bed assembly in the prior art;

[0022] Figure 2 This is a schematic diagram of the main structure of the first embodiment of the present invention;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the first embodiment of the present invention;

[0024] Figure 4 It is a three-dimensional exploded schematic diagram of the first embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the main structure decomposition of the first embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the installation structure of the first spindle and the second spindle in the first embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the connection structure between the swing rod and the connecting arm in accordance with the first embodiment of the present invention;

[0028] Figure 8 Schematic diagram of the connection structure between the swing arm and the swing rod according to the second embodiment of the present invention. DETAILED DESCRIPTION

[0029] The following will describe the implementation methods of the present invention in detail in conjunction with specific embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. Embodiment 1

[0030] refer to Figures 2 to 5A warp knitting machine with a double-sided drive of a comb bed assembly, comprising a frame 1 and a comb bed assembly 2 mounted on the frame 1, a main shaft 2a, a main shaft 2b and a motor 3a as a power, wherein one axial end of the main shaft 2a is transmission-connected to the output end of the motor 3a, the main shaft 2a is provided with three synchronously rotating cams 4a, each of which is pivotally connected to a swing arm 21 of the comb bed assembly 2 through a transmission device 3; the main shaft 2b is provided with three synchronously rotating cams 4b, each of which is pivotally connected to a swing arm 21' on the other side of the comb bed assembly 2 through a transmission device 2', each of which has the same circumferential profile as each of which has a phase difference of 1:1. 180 degrees, the main shaft 2a and the main shaft 2b are synchronized by a synchronization mechanism, a swing shaft 4 is mounted on the frame 1 above the comb bed assembly 2, and the comb bed assembly 2 is pivotally connected to the swing shaft 4 through two connecting rods 22, and the transmission device 1 3 and the transmission device 2 3' both include a swing rod 31, a connecting arm 32 and a connecting rod 33, one end of the swing rod 31 is connected to one end of the swing arm 21, 21', and the other end of the swing rod 31 is pivotally mounted on the connecting arm 32, and the connecting arm 32 is fixed on a rotating shaft 11 rotatably mounted on the frame 1, one end of the connecting rod 33 is transmission-connected to the cam 1 4a or the cam 2 4b, and the other end is transmission-connected to the rotating shaft 11. When the equipment is running, the motor 13a drives the main shaft 12a to rotate, and drives the main shaft 2b to move synchronously through the synchronization mechanism. The comb bed assembly 2 swings under the drive of the cam 14a and the cam 24b through the transmission device 13 and the transmission device 3' respectively, and the swing of the comb bed assembly 2 is strictly synchronized;

[0031] Specific example Figure 6 As shown, the synchronization mechanism is a synchronization wheel 5 installed on the main shaft 2a and the main shaft 2b and a synchronization belt 51 wound around the synchronization wheel 5.

[0032] At the same time, in this embodiment, the main shaft 2b is connected to the output end of the motor 2 3b, and the motor 1 3a and the motor 2 3b have the same specifications. In this structure, the motor 1 3a and the motor 2 3b have the same specifications, and the two are connected to the same inverter for unified control. The motor 1 3a and the motor 2 3b can ensure the maximum degree of synchronization when running; and at this time, the synchronous wheel 5 and the synchronous belt 51 are more inclined to constrain the synchronous operation of the main shaft 1 2a and the main shaft 2 2b, which reduces the transmission of torque in the structure and reduces the bearing force of the synchronous belt;

[0033] Specifically, a transmission device 1 3 and a transmission device 2 3' are respectively arranged on both sides of the comb bed assembly 2, and the transmission device 1 3 and the transmission device 2 3' operate synchronously. The synchronous operation mentioned here means that the transmission device 1 3 and the transmission device 2 3' apply the same force to the comb bed assembly 2, so that the comb bed assembly 2 swings around the swing shaft 4, and the transmission device 1 3 and the transmission device 2 3' apply and receive force uniformly; under this structure, due to the use of bilateral transmission, the power is uniform and abundant, and it is easier to achieve high-speed operation of the machine;

[0034] It should be pointed out that if Figure 3 , Figure 4 As shown, the axial positions of the transmission device 1 3 and the transmission device 2 3' on the swing shaft 4 are staggered, so the transmission device 2 3' is affected by the relationship of the installation position during installation and has two connecting arms 32 for power transmission;

[0035] Specific and reference Figure 7 , three arc installation grooves 321 are provided on the connecting arm 32, and a joint 311 is provided at one end of the swing rod 31 fixed to the connecting arm 32, and a bearing 312 is provided on the joint 311, and a pin 313 is installed in the bearing 312, and both ends of the pin 313 are fixed in the arc installation groove 321 by screws. Under this structure, a structure with multiple arc installation grooves 321 is provided, and the swing amplitude can be changed by adjusting the position of the arc installation groove 321 corresponding to the swing rod 31 when needed; at the same time, the open arc installation groove 321 is also more conducive to installation and early processing. Embodiment 2

[0036] refer to Figure 8 Compared with the first embodiment, the end of the swing arm 21, 21' connected to the swing rod 31 in this embodiment is provided with five mounting adjustment holes 211, and the swing rod is mounted on one of the mounting adjustment holes 211. In this structure, when necessary, the mounting adjustment hole 211 where the swing rod 31 is located can be adjusted, thereby achieving the adjustment of the swing amplitude in the structure, wherein the mounting adjustment hole closer to the swing shaft 4 has a larger swing amplitude, and the mounting adjustment hole farther away from the swing shaft 4 has a smaller swing amplitude.

[0037] The present invention does not make a specific statement about the loop forming device, etc. For details, please refer to the applicant's prior application CN108642698A.

[0038] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A warp knitting machine with a double-sided drive of a comb bed assembly, comprising a frame, a comb bed assembly mounted on the frame, a first spindle, a second spindle, and a first motor as a power, characterized in that: One axial end of the main shaft is connected to the output end of the motor, and the main shaft is provided with 3-6 synchronously rotating cams, each of which is pivotally connected to the swing arm of the comb bed assembly through a transmission device; the main shaft is provided with 3-6 synchronously rotating cams, each of which is pivotally connected to the swing arm of the comb bed assembly through a transmission device, and each cam has the same circumferential profile as each cam along the circumferential direction, and the phase difference between the two is 180 degrees. The two main shafts are synchronized through a synchronization mechanism, which is located in the A swing shaft is mounted on the frame above the comb bed assembly, and the comb bed assembly is pivotally connected to the swing shaft through two connecting rods. The transmission device 1 and the transmission device 2 respectively include a swing rod, a connecting arm and a connecting rod, one end of the swing rod is connected to one end of the swing arm, and the other end of the swing rod is pivotally mounted on the connecting arm, and the connecting arm is fixed on a rotating shaft rotatably mounted on the frame, one end of the connecting rod is connected to the cam 1 or the cam 2 in a transmission manner, and the other end of the connecting rod is connected to the rotating shaft in a transmission manner; The transmission device 1 and the transmission device 2 are staggered in the axial installation positions of the swing shaft to realize the bilateral transmission of the comb bed assembly; The synchronization mechanism is a synchronization wheel installed on the first main shaft and the second main shaft and a synchronization belt wound around the synchronization wheel.

2. The warp knitting machine with double-sided drive of the bar bed assembly according to claim 1, characterized in that: The second main shaft is drivingly connected to the output end of the second motor, and the specifications of the first motor and the second motor are the same.

3. The warp knitting machine with double-sided drive of the bar bed assembly according to claim 1 or 2, characterized in that: The connecting arm is provided with more than two circular arc installation grooves, and one end of the swing arm fixedly connected to the connecting arm is provided with a joint, the joint is provided with a bearing, a pin is installed in the bearing, and both ends of the pin are fixed in the circular arc installation groove by screws.

4. The warp knitting machine with double-sided drive of the bar bed assembly according to claim 1 or 2, characterized in that: One end of the swing arm connected to the swing rod is provided with a plurality of mounting adjustment holes, and the swing rod is mounted on one of the mounting adjustment holes.

Images