Integrated Garment Computerized Flat Knitting Machine Auxiliary Traction Structure

Abstract

An auxiliary pulling structure for a flat knitting machine for one-piece ready-to-wear clothes, comprising a pulling device, a hooking device, a front-back driving mechanism and a lifting driving mechanism which are arranged on one side or both sides along the length direction of the flat knitting machine; the lifting driving mechanism is installed on the front-back driving mechanism, the front-back driving mechanism is installed on the flat knitting machine, the pulling device and the hooking device are installed on the lifting driving mechanism, and the hooking device is used for hooking the garment pieces. Under the action of the front-back driving mechanism, the front and back garment pieces are separated, and the separated garment pieces are immediately hooked by the pulling device. Under the drive of the lifting driving mechanism, local parts of the garment pieces are pulled. In the present invention, after separating the front and back garment pieces first and then performing local pulling, the whole pulling process is no longer affected by the frictional force of the front and back garment pieces being in contact, the cumbersome work of adjusting the frictional force and pressing force of the garment pieces is omitted, the debugging procedure is simplified, thereby fully ensuring the accuracy of pulling the garment pieces, greatly reducing the labor intensity of workers and the difficulty of debugging, and fully improving the production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of computer flat knitting machines, and in particular to an auxiliary pulling structure for an integrated ready-to-wear computer flat knitting machine. Background Art

[0002] As is well known, a computer flat knitting machine is a double-needle bed latch needle weft knitting machine. Its triangular device is like a set of planar cams. The stitches of the knitting needles can enter the grooves of the cams. By moving the cams, the knitting needles are forced to make regular up-and-down movements in the needle grooves of the needle bed, and through the actions of the needle hooks and needle tongues, the yarn is knitted into a knitted fabric. The general knitting process is as follows: during the upward movement of the knitting needle, the loop gradually exits the needle hook, the needle tongue is opened, and then exits the needle tongue and hangs on the needle bar; during the downward movement of the knitting needle, the needle hook hooks the newly laid yarn and pulls it into a loop, while the original loop then exits the needle hook, and the new loop passes through the old loop and is connected in series with the old loop. The loop strings knitted by numerous knitting needles are interconnected to form a knitted fabric.

[0003] During knitting, in order to prevent the loop in the needle hook from rising as the knitting needle rises, that is, to prevent the loop from floating, a pulling device is usually installed on the existing computer flat knitting machine to continuously pull the knitted fabric downward.

[0004] Currently, the pulling device installed between the left and right wallboards of the computer flat knitting machine is generally a roller assembly symmetrically arranged front and back. During operation, the knitted fabric is clamped by two symmetric roller rollers with opposite rotation directions and pulled downward. However, this pulling device is only suitable for pulling the whole knitted fabric. For a knitted fabric that needs to be pulled locally during the knitting process, only by manually setting counterweights with appropriate weights and heights at the parts that need to be pulled locally, and using the gravity of the counterweights to pull the local part of the knitted fabric downward. For example, when knitting a sweater, in order to achieve a scooped neck and dropped shoulders, it is necessary to pull the local parts such as the neckline and shoulders of the sweater where the front and back lengths are inconsistent. Since this operation method requires manual setting of counterweights at the bottom of the knitted fabric to pull its local parts downward each time, the degree of automation is low, and the labor intensity of production workers is also high.

[0005] Later, some manufacturers designed a segmented roller assembly below the original roller assembly, and defined the upper roller assembly as the high-position roller, and defined the lower segmented roller assembly as the auxiliary roller.

[0006] There are already patent applications for segmented roller assemblies (auxiliary rollers) in the market. For example, the Chinese utility model patent with the publication number CN 214694565U and the name "A segmented roller for a flat knitting machine", as well as the Chinese invention patent application with the publication number CN 113026190A and the name "Roller adjusting device". The setting of this auxiliary roller can, during the process of knitting ready-to-wear clothes, separately adjust the traction force applied to the garment piece in segments according to the requirements of the knitted fabric, so as to selectively locally pull different parts of the entire garment piece, effectively meeting the actual production needs of the fabric.

[0007] However, as we know, when knitting ready-to-wear clothes, the front garment piece and the back garment piece are attached to each other. Although the local parts of the garment piece can be pulled downward separately through the surface friction of the segmented roller and the pressing force on the garment piece, due to the certain friction between the mutually attached front and back garment pieces, in the actual production process, production workers usually need to debug the segmented roller for a long time, especially adjust the pressing force and friction applied by the segmented roller on the garment piece, in order to finally achieve the pulling effect of different speeds on the front and back garment pieces by the segmented roller. The whole process is very time-consuming and laborious. In addition, due to the existence of friction between the two attached front and back garment pieces when pulling downward, even if the production worker adjusts the position and pressing force of the segmented roller properly, it is very difficult to completely ensure the accurate downward pulling of the local part of the garment piece. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide an auxiliary pulling structure for an integrated ready-to-wear flat knitting machine. When local pulling of the garment piece is required, first separate the front and back garment pieces, and then perform the pulling, thereby avoiding the influence of the friction between the front and back garment pieces. This not only ensures the downward pulling accuracy but also greatly improves the production efficiency of production workers.

[0009] The technical solution of the present invention is to provide an auxiliary pulling structure for an integrated ready-to-wear flat knitting machine having the following structure, including a pulling device, a hooking device, a front and back driving mechanism, and a lifting driving mechanism for pulling the garment piece downward; the pulling device, the hooking device, the front and back driving mechanism, and the lifting driving mechanism are arranged on one side along the length direction of the flat knitting machine, or on both sides simultaneously; the lifting driving mechanism is installed on the front and back driving mechanism and is used to drive the pulling device to move up and down; the front and back driving mechanism is installed on the flat knitting machine and is used to drive the hooking device to move back and forth; the pulling device and the hooking device are installed on the lifting driving mechanism, and the hooking device is used to hook the garment piece. Under the action of the front and back driving mechanism, the front garment piece and the back garment piece are separated, and the separated garment piece is immediately hooked by the pulling device. Under the drive of the lifting driving mechanism, the local part of the garment piece is pulled downward.

[0010] The auxiliary pulling structure of the one-piece garment computer flat knitting machine according to the present invention, wherein the pulling device includes a climbing needle, a climbing seat and a first driving device. The climbing needle is installed on the climbing seat, and the first driving device is installed on the lifting driving mechanism. The climbing seat is used to drive the climbing needle to hook or disengage from the garment piece.

[0011] The auxiliary pulling structure of the one-piece garment computer flat knitting machine according to the present invention, wherein the hooking device is a needle-piercing suction cup. A plurality of needles are provided at the front part of the needle-piercing suction cup. When the needles extend, they hook on the garment piece, and when the needles retract, they disengage from the garment piece.

[0012] The auxiliary pulling structure of the one-piece garment computer flat knitting machine according to the present invention, wherein the lifting driving mechanism includes a torque motor, a support seat, a lead screw I and a lead screw nut I. The support seat is installed on the front-back driving mechanism. The torque motor and the lead screw I are installed on the support seat. The lead screw I is arranged vertically, and its end is connected to the rotating shaft of the torque motor. The lead screw nut I is sleeved on the lead screw I, and the pulling device is installed on the lead screw nut I.

[0013] The auxiliary pulling structure of the one-piece garment computer flat knitting machine according to the present invention, wherein the front-back driving mechanism includes a motor II, a lead screw II, a lead screw nut II, a slider and a guide rail. The motor II, the lead screw II and the guide rail are installed on the wallboard of the computer flat knitting machine. The motor II is a servo motor or a stepping motor. The end of the lead screw II is connected to the rotating shaft of the motor II. The lead screw nut II is sleeved on the lead screw II. The slider is installed on the guide rail and is connected to the lead screw nut II. The lifting driving mechanism is installed on the slider.

[0014] The auxiliary pulling structure of the one-piece garment computer flat knitting machine according to the present invention, wherein the positions of the pulling device and the hooking device can be adjusted along the length direction of the computer flat knitting machine.

[0015] The auxiliary pulling structure of the one-piece garment computer flat knitting machine according to the present invention, wherein the auxiliary pulling structure further includes a left-right driving mechanism. The left-right driving mechanism includes a motor III, a synchronous belt, synchronous belt pulleys, a cross beam, guide wheels and a guide seat. The cross beam is installed on the front-back driving mechanism. The motor III is a servo motor or a stepping motor and is installed on the cross beam. The synchronous belt is driven to rotate by the synchronous belt pulleys. The guide seat is connected to the synchronous belt and is installed on the cross beam through the guide wheels. The lifting driving mechanism is installed on the guide seat.

[0016] The auxiliary pulling structure of the one-piece garment computer flat knitting machine according to the present invention, wherein arc-shaped protrusions are provided along the length direction at the top and bottom of the cross beam. There are a plurality of guide wheels, which are respectively clamped on the top and bottom edges of the cross beam. An annular groove matching the protrusion is provided on the outer peripheral wall of the guide wheel.

[0017] For the auxiliary pulling structure of the integrated garment computer flat knitting machine described in the present invention, the pulling device and the hooking device are arranged one above the other, with the pulling device above and the hooking device below, or the hooking device above and the pulling device below.

[0018] For the auxiliary pulling structure of the integrated garment computer flat knitting machine described in the present invention, the pulling device and the hooking device are arranged side by side left and right.

[0019] After adopting the above structure, compared with the prior art, the auxiliary pulling structure of the integrated garment computer flat knitting machine of the present invention has the following advantages: The applicant has redesigned the existing segmented auxiliary roller. It includes a pulling device, a hooking device, a front and rear driving mechanism, and a lifting driving mechanism. The pulling device and the hooking device are installed on the lifting driving mechanism, the lifting driving mechanism is installed on the front and rear driving mechanism, and the front and rear driving mechanism is installed on the computer flat knitting machine. Therefore, when it is necessary to pull a local part of the garment piece, the front and rear driving mechanism will first drive the hooking device to move forward to hook the garment piece, and then drive the hooking device to move backward in the reverse direction to separate the front and rear garment pieces. Then the pulling device immediately hooks the garment piece, and the hooking device is separated from the garment piece. The lifting driving mechanism starts to drive the pulling device to pull the local part of the garment piece downward. Thus, it can be seen that when the present invention performs downward local pulling on the garment piece, it first separates the front and rear garment pieces, and then pulls the local part thereof. The whole process avoids the influence of the frictional force of the front and rear garment pieces sticking to each other. Because the present invention separates the front and rear garment pieces and then pulls the local part of the corresponding garment piece through the pulling device, rather than, like the existing segmented roller, using the frictional force on its own surface and the pressing force on the garment piece to perform local rubbing and downward pulling on the front and rear garment pieces that are in contact with different speeds. This structure of the present invention eliminates the cumbersome work of adjusting the frictional force and pressing force on the garment piece, and is no longer affected by the frictional force of the front and rear garment pieces sticking to each other during the pulling process, thus fully ensuring the accuracy when pulling the garment piece downward, greatly reducing the labor intensity of production workers, and fully improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional structural schematic diagram when the auxiliary pulling structure of the integrated garment computer flat knitting machine of the present invention is installed on the computer flat knitting machine;

[0021] Figure 2 is Figure 1 a three-dimensional structural schematic diagram when the top needle plate seat is hidden in ;

[0022] Figure 3 is Figure 2 a three-dimensional structural schematic diagram when the outer protective covers of the pulling device and the hooking device are hidden in ;

[0023] Figure 4 is Figure 3The front view three-dimensional enlarged structural schematic diagram when the middle pulling device, the hooking device, the lifting driving mechanism and the left and right driving mechanisms are installed together;

[0024] Figure 5 is Figure 4 the rear view three-dimensional enlarged structural schematic diagram;

[0025] Figure 6 is the three-dimensional structural schematic diagram of another embodiment of the present invention;

[0026] Figure 7 is Figure 6 the rear view three-dimensional enlarged structural schematic diagram when the middle pulling device, the hooking device, the lifting driving mechanism and the left and right driving mechanisms are installed together. Specific embodiments

[0027] In order to make the above-mentioned objects, features and advantages of the present application more obvious and understandable, the following will combine the drawings to make a detailed description of the specific embodiments of the embodiments of the present application. Many specific details are set forth in the following description in order to fully understand the embodiments of the present application. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. The embodiments of the present application can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the embodiments of the present application are not limited by the specific embodiments disclosed below.

[0028] It can be understood that the terms "first", "second", etc. used in the present application can be used herein to describe various technical terms, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. However, unless otherwise specifically stated, these technical terms are not limited by these terms. These terms are only used to distinguish one technical term from another. In the description of the embodiments of the present application, the meanings of "a plurality" and "several" are at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0030] In the description of the embodiments of the present application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than the horizontal height of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than the horizontal height of the second feature.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0032] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used in the description of the present application in this application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0033] The following further details the auxiliary pulling structure of the integrated garment computer flat knitting machine of the present invention with reference to the accompanying drawings:

[0034] Embodiment 1

[0035] As Figure 1 、 Figure 2 and Figure 3 shown, an auxiliary pulling structure of an integrated garment computer flat knitting machine of the present invention includes a pulling device 7 for pulling the garment piece downward, a hooking device 6, a front and rear driving mechanism 3, and a lifting driving mechanism 5. The pulling device 7, the hooking device 6, the front and rear driving mechanism 3, and the lifting driving mechanism 5 are arranged on one side along the length direction of the computer flat knitting machine, or can be arranged on both sides at the same time. The quantity can be determined according to actual knitting requirements and can be one group, two groups, three groups, etc. In the drawings of this embodiment, six groups of pulling devices 7, hooking devices 6, and lifting driving mechanisms 5, as well as two groups of front and rear driving mechanisms 3 are shown, and are symmetrically arranged on the front and rear sides along the length direction of the computer flat knitting machine. Although reducing the quantity or arranging on one side can save costs and can also achieve the functions introduced in the present invention, the effect is not as good as arranging on both the front and rear sides at the same time. Moreover, arranging three groups on each side can respectively perform local pulling on the front and rear garment pieces of the two shoulder parts and one collar part of the finished garment, with higher efficiency. Therefore, when knitting knitted fabrics such as sweaters, it is recommended to adopt the structure shown in the drawings of this embodiment.

[0036] The lifting drive mechanism 5 is installed on the front and rear drive mechanism 3 and is used to drive the pulling device 7 to move up and down. The front and rear drive mechanism 3 is installed on the wallboard 1 of the flat knitting machine and is used to drive the hooking device 6 to move back and forth (open and close). At the top of the wallboard 1, there is a needle plate seat 2, and at the top of the needle plate seat 2, there is a high-position roller. The specific structure of the high-position roller is the same as that of the prior art. The pulling device 7 and the hooking device 6 are installed on the lifting drive mechanism 5. The hooking device 6 is used to hook the garment piece. Under the action of the front and rear drive mechanism 3, the front garment piece and the rear garment piece are separated. The separated garment pieces are immediately hooked by the pulling device 7 and, under the drive of the lifting drive mechanism 5, the local parts of the garment pieces are pulled downward.

[0037] Combined Figure 4 with Figure 5 , in this embodiment, the pulling device 7 is designed as the following structure: It includes climbing needles 73, a climbing seat 72, and a first driving device 71. The first driving device 71 is a cylinder. There are several climbing needles 73, which are respectively installed in several through holes opened on the climbing seat 72. There is a lug at the rear side of the climbing seat 72. The middle part of the lug is hinged to the cylinder block of the cylinder through a lug seat, and the rear part of the lug is hinged to the piston rod of the cylinder. During operation, using the lever principle, the cylinder drives the climbing needles 73 to hook or disengage from the garment piece through the lug and the climbing seat 72. The first driving device 71 can also adopt other structures, such as using a hydraulic cylinder, a stepping motor and a ball screw pair, an electromagnetic telescopic rod, etc. to drive the climbing needles 73 to stretch and retract to hook or disengage from the garment piece. These structures are not unfamiliar to those skilled in the art, so the specific details will not be elaborated here. For the pulling device 7, an existing pulling rake assembly can also be used, as long as it has the function of stretching and retracting the climbing needles 73. Stretching is to hook the garment piece, and retracting is to disengage from the garment piece.

[0038] The hooking device 6 uses a needle-piercing suction cup, also called a needle hook gripper, a needle-shaped suction cup, etc. It is currently a commercially available product. There are several needles at the front part of the needle-piercing suction cup. During operation, it is driven by air pressure. When the needles extend, they hook on the garment piece, and when the needles retract, they disengage from the garment piece.

[0039] Of course, if the pulling device 7 is not set, and the hooking device 6 is directly used to both hook the garment piece to separate the front and rear garment pieces and to pull the garment piece downward locally, that is, integrating the two functions on the hooking device 6 is also possible. However, the effect of separating the garment piece and pulling is not very good, and it is easy to scratch or hook the garment piece out of shape. It is not as good as separating the two functions and using the hooking device 6 and the pulling device 7 to perform respectively.

[0040] Continue to refer to Figure 4 and Figure 5, the lifting drive mechanism 5 includes a torque motor 51, a support base 53, a lead screw I 52, and a lead screw nut I 54. The torque motor 51 and the lead screw I 52 are both installed on the support base 53. The lead screw I 52 is arranged vertically, and its end is connected to the rotating shaft of the torque motor 51. The lead screw nut I 54 is sleeved on the lead screw I 52, and the pulling device 7 is installed on the lead screw nut I 54. To simplify the structure, in this embodiment, the first drive device 71 and the hooking device 6 in the pulling device 7 are simultaneously installed on the lead screw nut I 54, and the pulling device 7 and the hooking device 6 are arranged one above the other. For example, the pulling device 7 is above and the hooking device 6 is below, or the hooking device 6 is above and the pulling device 7 is below. In this way, it will not affect the normal up and down movement of the pulling device 7 driven by the lifting drive mechanism 5, nor will it affect the operation of the hooking device 6 for hooking the garment piece, that is, the two do not interfere with each other, and the whole structure is simplified and the operation is more coherent. Of course, according to actual needs, it is also possible to install the two separately as long as it does not affect their normal work.

[0041] During the process of pulling the pulling device 7 downward, in order to play a role of flexible buffering and pulling down during pulling and avoid hard impact on the garment piece, an elastic component can be provided between the pulling device 7 and the lifting drive mechanism 5. Specifically in this embodiment, a buffer spring and a guide post, or an elastic component such as a rubber post can be installed between the cylinder seat and the lead screw nut I 54.

[0042] The above-mentioned lifting drive mechanism 5 is not limited to the transmission structure of the lead screw pair, and can also be existing synchronous belt drive, chain drive, or lifting drive structures of cylinders or hydraulic cylinders, which will not be shown one by one here.

[0043] See Figure 3 , the front and rear drive mechanism 3 includes a motor II 31, a lead screw II 33, a lead screw nut II 34, a slider 35, and a guide rail 32. The motor II 31, the lead screw II 33, and the guide rail 32 are installed on the wall panel 1 of the computerized flat knitting machine. The motor II 31 is a servo motor or a stepping motor. The end of the lead screw II 33 is connected to the rotating shaft of the motor II 31. The lead screw nut II 34 is sleeved on the lead screw II 33. The slider 35 is installed on the guide rail 32 and is connected to the lead screw nut II 34 by screws. The lifting drive mechanism 5 is installed on the slider 35, and the main purpose is to drive the hooking device 6 to move back and forth (opening and closing movement). The front and rear drive mechanism 3 here can also use existing chain drive mechanisms, cylinder drive mechanisms, or electromagnetic telescopic rods and other drive mechanisms as long as the front and rear movement of the hooking device 6 can be achieved. The structure of this embodiment has relatively stable performance during operation and is preferably adopted.

[0044] In order to further expand the application scope of the present invention and meet the knitting requirements of different knitted fabrics, the positions of the pulling device 7 and the hooking device 6 are designed to be adjustable along the length direction of the computerized flat knitting machine. This adjustable structure can be a conventional manual adjustment structure. After sliding adjustment, a locking screw is used to lock the current position; it can also be an automatic adjustment structure. Specifically, a left-right drive mechanism 4 is provided between the lifting drive mechanism 5 and the front-back drive mechanism 3. The left-right drive mechanism 4 includes a motor III 41, a synchronous belt 42, synchronous belt pulleys 46, a cross beam 45, guide wheels 43 and a guide seat 44. The end of the cross beam 45 is installed on the slider 35 in the front-back drive mechanism 3; the motor III 41 is a servo motor or a stepper motor and is installed on the cross beam 45 by screws; a synchronous belt pulley 46 is installed on the rotating shaft of the motor III 41, and another synchronous belt pulley 46 is fixedly installed on the cross beam 45 through a mounting seat. The two synchronous belt pulleys 46 tighten the synchronous belt 42, and then the rotation of the motor III 41 drives the synchronous belt 42 to rotate; the guide seat 44 is connected to the synchronous belt 42 by screws and is installed on the cross beam 45 through the guide wheels 43. The support seat 53 in the lifting drive mechanism 5 is installed on the guide seat 44.

[0045] In this embodiment, the number of the left-right drive mechanisms 4 is the same as that of the above-mentioned pulling devices 7, etc., that is, each group is equipped with a left-right drive mechanism 4. For example, for a structure arranged unilaterally along the length direction of the computerized flat knitting machine, if there are three parts on the garment piece that need local pulling, then three left-right drive mechanisms 4 are equipped; for a structure arranged symmetrically on the front and back sides along the length direction of the computerized flat knitting machine, then six left-right drive mechanisms 4 are equipped, three on each of the front and back sides. In short, the specific number can be determined according to the actual knitting requirements. The left-right adjustment stroke of the first embodiment is relatively short, and the three left-right drive mechanisms 4 on each side can be arranged horizontally (see Figure 3 the shown state).

[0046] Arc-shaped protrusions 451 are provided along the length direction at the top and bottom of the cross beam 45. There are several guide wheels 43, which are respectively clamped on the top and bottom edges of the cross beam 45. An annular groove 431 matching the protrusion 451 is provided on the outer peripheral wall of the guide wheel 43. Thus, when sliding, relying on the engagement of the annular groove 431 and the protrusion 451, the front-back shaking of the guide seat 44 is effectively avoided, and the operation precision is further improved.

[0047] The above-mentioned left-right drive mechanism 4 is not limited to the transmission structure of the synchronous belt, and can also be existing left-right transmission structure forms such as chain transmission, electromagnetic telescopic rod, cylinder or hydraulic cylinder, etc., which will not be elaborated one by one here.

[0048] Embodiment Two

[0049] The difference between this second embodiment and the first embodiment above is only that: seeFigure 6 , the motor III 41 in the left and right drive mechanisms 4 is installed at the end of the cross beam 45, so that the three synchronous belts 42 on each side are arranged in an upper, middle and lower form. Such a design greatly extends the length of each synchronous belt 42 along the cross beam 45, and fully increases the lateral adjustment stroke of each left and right drive mechanism 4. In addition, referring to Figure 7 , the pulling device 7 and the hooking device 6 are arranged side by side left and right. In order to improve the reliability of the work, in this embodiment, a structure form in which a pulling device 7 is clamped between two hooking devices 6 is adopted.

[0050] In summary, when the present invention needs to pull a local part of the garment piece, the front and rear drive mechanisms 3 will first drive the hooking device 6 to move forward to hook the garment piece, and then the front and rear drive mechanisms 3 drive the hooking device 6 to move backward in the reverse direction, thereby separating the front and rear garment pieces. The pulling device 7 then hooks the garment piece, the hooking device 6 is separated from the garment piece, and the lifting drive mechanism 5 starts to drive the pulling device 7 to pull the local part of the garment piece downward. The existing segmented auxiliary rollers rely on the friction on the surface of the rollers themselves and the pressing force on the garment pieces to perform local rubbing and downward pulling of the front and rear garment pieces that are in contact with different speeds. Due to the existence of friction between the mutually contacting front and rear garment pieces, the process for production workers to adjust the friction and pressing force applied by the segmented auxiliary rollers on the garment pieces is often very cumbersome, and repeated debugging is time-consuming and laborious. Compared with this, the present invention first separates the front and rear garment pieces and then performs local pulling on them. The entire pulling process is no longer affected by the friction between the front and rear garment pieces in contact, thus fully ensuring the accuracy when the garment piece is pulled downward, realizing local precise pulling of the garment piece, and at the same time eliminating the cumbersome work of adjusting the friction and pressing force of the garment piece, simplifying the debugging procedure, greatly reducing the labor intensity of production workers, and reducing the difficulty during production debugging, and fully improving the production efficiency.

[0051] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0052] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it cannot be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An auxiliary pulling structure for a flat knitting machine for one-piece ready-to-wear, comprising a pulling device (7) for pulling the garment piece downward. Characterized in that: It further comprises a hooking device (6), a front-back driving mechanism (3) and a lifting driving mechanism (5); The pulling device (7), the hooking device (6), the front-back driving mechanism (3) and the lifting driving mechanism (5) are arranged on one side along the length direction of the flat knitting machine, or on both sides simultaneously; The lifting driving mechanism (5) is mounted on the front-back driving mechanism (3) and is used to drive the pulling device (7) to move up and down; The front-back driving mechanism (3) is mounted on the flat knitting machine and is used to drive the hooking device (6) to move back and forth; The pulling device (7) and the hooking device (6) are mounted on the lifting driving mechanism (5). The hooking device (6) is used to hook the garment piece. Under the action of the front-back driving mechanism (3), the front garment piece and the back garment piece are separated. The separated garment piece is immediately hooked by the pulling device (7). Under the drive of the lifting driving mechanism (5), the local part of the garment piece is pulled downward; The pulling device (7) comprises a climbing needle (73), a climbing seat (72) and a first driving device (71). The climbing needle (73) is mounted on the climbing seat (72). The first driving device (71) is mounted on the lifting driving mechanism (5) and drives the climbing needle (73) to hook or disengage from the garment piece through the climbing seat (72); The hooking device (6) is a needle-piercing suction cup. A number of needles are provided at the front part of the needle-piercing suction cup. When the needles extend, they hook on the garment piece. When the needles retract, they disengage from the garment piece; The front-back driving mechanism (3) comprises a motor II (31), a lead screw II (33), a lead screw nut II (34), a slider (35) and a guide rail (32). The motor II (31), the lead screw II (33) and the guide rail (32) are mounted on the wall panel (1) of the flat knitting machine. The motor II (31) is a servo motor or a stepping motor. The end of the lead screw II (33) is connected to the rotating shaft of the motor II (31). The lead screw nut II (34) is sleeved on the lead screw II (33). The slider (35) is mounted on the guide rail (32) and is connected to the lead screw nut II (34). The lifting driving mechanism (5) is mounted on the slider (35); The positions of the pulling device (7) and the hooking device (6) can be adjusted along the length direction of the flat knitting machine.

2. The auxiliary pulling structure for a flat knitting machine for one-piece ready-to-wear according to claim 1, Characterized in that: The lifting driving mechanism (5) comprises a torque motor (51), a support seat (53), a lead screw I (52) and a lead screw nut I (54). The support seat (53) is mounted on the front-back driving mechanism (3). The torque motor (51) and the lead screw I (52) are mounted on the support seat (53). The lead screw I (52) is arranged vertically, and its end is connected to the rotating shaft of the torque motor (51). The lead screw nut I (54) is sleeved on the lead screw I (52). The pulling device (7) is mounted on the lead screw nut I (54).

3. The auxiliary pulling structure for a flat knitting machine for one-piece ready-to-wear according to claim 1, Characterized in that: The auxiliary pulling structure further includes a left-right driving mechanism (4). The left-right driving mechanism (4) includes a motor III (41), a synchronous belt (42), synchronous belt pulleys (46), a cross beam (45), guide wheels (43) and a guide seat (44). The cross beam (45) is mounted on the front-back driving mechanism (3). The motor III (41) is a servo motor or a stepper motor and is mounted on the cross beam (45) to drive the synchronous belt (42) to rotate through the synchronous belt pulleys (46). The guide seat (44) is connected to the synchronous belt (42) and is mounted on the cross beam (45) through the guide wheels (43). The lifting driving mechanism (5) is mounted on the guide seat (44).

4. The auxiliary pulling structure of an integrated garment computerized flat knitting machine according to claim 3, characterized in that: arc-shaped protrusions (451) with a cross-section are provided along the length direction of the top and bottom of the cross beam (45). There are several guide wheels (43) which are respectively clamped on the top and bottom edges of the cross beam (45). An annular groove (431) matching the protrusion (451) is provided on the outer peripheral wall of the guide wheel (43).

5. The auxiliary pulling structure of an integrated garment computerized flat knitting machine according to claim 1, characterized in that: The pulling device (7) and the hooking device (6) are arranged one above the other. The pulling device (7) is above and the hooking device (6) is below, or the hooking device (6) is above and the pulling device (7) is below.

6. The auxiliary pulling structure of an integrated garment computerized flat knitting machine according to claim 1, characterized in that: The pulling device (7) and the hooking device (6) are arranged side by side left and right.

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