Automatic base fabric conveying device of tufting machine

Abstract

The utility model relates to an automatic base cloth conveying device of a tufting machine. The automatic base cloth conveying device comprises a rack, base cloth and a rotating mechanism, the rotating mechanism is arranged in the machine frame and comprises an outer barrel and an inner barrel, the inner barrel is arranged in the outer barrel, the inner barrel and the outer barrel are coaxially arranged, the inner barrel can rotate around the axis and cannot rotate, the outer barrel is arranged on the machine frame in a left-right moving mode, and base cloth is conveyed into the outer barrel through a rotating part on one side of the machine frame and unfolded; a knitting needle mechanism is arranged on the rack and comprises a lead screw and a tufting needle; the lead screw is rotatably arranged at the top of the rack, the lead screw is in threaded fit with the mounting block, the mounting block is fixedly connected with the air cylinder, the air cylinder mechanism is connected with the tufting needle, the lead screw rotates, the tufting needle moves left and right along the lead screw, and the tufting needle stretches up and down through the air cylinder. The conveying device has the advantages that base cloth is attached in the conveying process, loosening and displacement are avoided, the whole production process is continuous, production efficiency is high, inaccurate matching of the base cloth and a knitting needle is avoided, and production quality is stable.

Description

Technical Field

[0001] The utility model relates to the technical field of weaving equipment, in particular to an automatic conveying device for base fabric of a tufting machine. Background Art

[0002] As tufted products such as carpets are increasingly used in people's daily lives, the devices used for these products are tufted looms, which mainly use tufting needle structures to move up and down in the device to implant tuft yarn into the base fabric of woven fabrics or non-woven fabrics. However, most of my country's tufting machines were previously introduced from abroad, and the degree of automation of the equipment used is not high enough.

[0003] Moreover, during product manufacturing and production, since the base fabric device of the current tufting machine is only equipped with an axis rotation structure, the base fabric is rotated by relying on the traction force of the motor set by the tufting machine itself, and the tufting needles are then moved up and down to perform weaving. However, the base fabric transmission speed in this manner is often not uniform, resulting in inaccurate coordination when the tufting needles move up and down, resulting in changes in the stitches on the woven product, which in turn leads to unqualified products. In addition, the bed plate groove of the current base fabric device for placing and transmitting the base fabric is narrow, so that when the base fabric moves and the needle thread is inserted, the base fabric sinks and loosens, resulting in incomplete cutting of the product surface.

[0004] Therefore, based on the customer feedback on the shortcomings of the existing devices, the inventors have made further improvements according to the proposed defects and deficiencies to overcome the above problems. Utility Model Content

[0005] In order to solve the above-mentioned deficiencies in the prior art, the present invention provides an automatic base fabric conveying device for a tufting machine, the purpose of which is to effectively solve the defects of unevenness and looseness in the base fabric transfer process in the prior art.

[0006] To achieve the above-mentioned object, the present invention adopts the following scheme: an automatic conveying device for a base fabric of a tufting machine, comprising a frame, a base fabric and a rotating mechanism;

[0007] The rotating mechanism is arranged in the frame, and the rotating mechanism includes an outer cylinder and an inner cylinder. The inner cylinder is arranged inside the outer cylinder and the two are arranged coaxially. The inner cylinder can rotate around the axis while the outer cylinder cannot rotate. The outer cylinder can be moved left and right on the frame, and the base fabric is sent to the outer cylinder of the rotating mechanism through the rotating part on one side of the frame and unfolded.

[0008] A knitting needle mechanism is also provided on the frame, and the knitting needle mechanism includes left and right screws provided on the top of the frame and a mounting block matched with the screws; a threaded through hole is provided on the mounting block, and the mounting block is provided on the screw in threaded cooperation with the screw via the through hole; a tufting needle that can be extended and retracted up and down is provided at the bottom of the mounting block.

[0009] As a further solution of the present invention, a rotating screw A is provided in the upper frame of the rack; the rotating screw A is driven by a motor A, and a moving block is installed on the rotating screw A, and the lower surface of the moving block is vertically connected to a long rod, and the long rod is fixedly connected to the outer cylinder.

[0010] As a further solution of the present invention, a through hole is opened in the moving block, and an internal thread is provided in the through hole. The internal thread matches the external thread on the rotating screw A, and the moving block can move along the length direction of the moving screw A.

[0011] As a further solution of the present invention, an inner cylinder is rotatably arranged in the outer cylinder, and a rotating shaft is opened at one end of the inner cylinder. The rotating shaft passes through the end face of one end of the outer cylinder, and the end is connected by a motor B, which is fixedly connected to the outer cylinder.

[0012] As a further solution of the present invention, a limiting protrusion is provided on the inner cylinder, which can straighten the base fabric entering the rotating mechanism to avoid disorder and unevenness of the base fabric.

[0013] As a further solution of the present invention, the outer cylinder is provided with a cloth inlet and a cloth outlet on the upper left side. The base cloth sent by the conveying part enters the cloth inlet, and the cloth outlet is arranged at the lower right side of the outer cylinder. The base cloth is sent to the cloth outlet by the inner cylinder rotating inside the outer cylinder.

[0014] As a further solution of the present invention, the conveying part includes a rotating roller A and a rotating roller B. The rotating roller A and the rotating roller B are also arranged in the left frame of the frame. The two are arranged up and down and are separated by a certain distance.

[0015] As a further solution of the present invention, the screw in the knitting needle mechanism includes screw A and screw B; screw A and screw B are both equipped with tufting needles that can be raised and lowered by cylinders to pierce the base fabric; the tufting needles can be moved left and right by screw A and screw B.

[0016] As a further solution of the present invention, the frame is further provided with a cloth guiding mechanism, which can make the base cloth introduced into the frame parallel to the tufting needles, thereby preventing the base cloth from being tilted or uneven.

[0017] The utility model has the following advantages:

[0018] (1) The automatic conveying device for the base fabric of a tufting machine designed in this scheme makes the base fabric transmission more convenient, fast and smooth by designing a reasonable base fabric transmission structure, ensuring the good coordination between the up and down reciprocating motion of the top tufting needle and the fabric feeding, and solving the problem of skipped stitches;

[0019] (2) This solution increases the distance between the bed frame and the base fabric, thereby preventing the base fabric from sinking and loosening during the cutting process, resulting in incomplete cutting of the blanket surface; and the rotating mechanism can also support and move the base fabric when the tufting needles move up and down to weave the base fabric, greatly realizing the automatic transmission and production of the base fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the utility model from the first perspective;

[0021] Figure 2 This is a schematic structural diagram of the utility model from a second viewing angle;

[0022] Figure 3 This is a schematic diagram of the structure of the installation of the rotating mechanism and the tufting needles of the utility model;

[0023] Figure 4 This is a structural diagram of the utility model after the rotating mechanism is connected to the mounting rod;

[0024] Figure 5 This is a schematic structural diagram of the rotating mechanism of the utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the inner cylinder and outer cylinder of the rotating mechanism of the utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the utility model after the base fabric is installed;

[0027] In the figure: 1-frame, 2-outer cylinder, 3-inner cylinder, 4-tufting needle, 5-rotating screw A, 6-rotating roller A, 7-rotating roller B, 8-cloth guiding mechanism, 9-motor A, 10-motor B. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0029] It should be noted that the directions or positional relationships indicated by “left”, “right”, etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the invented product is usually placed when in use, or are the directions or positional relationships commonly understood by those skilled in the art. Such terms are only used to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other.

[0031] It should be noted that the working principle of the tufting machine is to pierce the fiber yarn into the base fabric through the needle bed and the needle punching mechanism to form a velvety fabric.

[0032] It should be noted that, generally, the base fabric conveying device usually includes a base fabric discharge roller and an output roller; the wool fiber is supplied to the tufting needles 4 through the wire output roller device, the base fabric is output through the base fabric discharge roller, and then conveyed through the output roller.

[0033] It should be noted that cut pile and loop pile are two different processes. Cut pile carpets are made by cutting the carpet surface into a pile by machine, resulting in a flat and smooth surface with a generally short pile length. Loop pile carpets, on the other hand, are made by machine using a circular loop-woven pile surface, resulting in a circular pile with a longer pile length.

[0034] Therefore, based on the above questions, see Figure 1 The utility model proposes an automatic conveying device for the base fabric of a tufting machine to solve the problem.

[0035] (Example 1)

[0036] See Figures 1 to 7 , this embodiment proposes an automatic conveying device for the base fabric of a tufting machine, comprising a frame 1, a base fabric and a rotating mechanism; the rotating mechanism is arranged in the frame 1, the rotating mechanism comprises a fixed outer cylinder 2 and a rotatable inner cylinder 3, the inner cylinder 3 is arranged inside the outer cylinder 2 and the two are arranged coaxially, the rotating mechanism is controlled by the transmission mechanism in the frame 1 and can move left and right, and the base fabric is sent to the rotating mechanism via the conveying part on the frame 1; a knitting needle mechanism is also provided on the frame 1; the knitting needle mechanism includes a tufting needle 4 that can be telescopically extended up and down, which can be adapted to penetrate downward into the bottom; when working, the base fabric is extended into the rotating mechanism through the conveying part of the frame 1, the inner cylinder 3 is driven to rotate, and the rotating mechanism is driven to move from left to right, the base fabric is automatically unfolded in the frame 1, and the tufting needle 4 is driven downward to penetrate into the unfolded base fabric.

[0037] The conventional base fabric conveying device for tufted products is difficult to achieve uniform transmission at a controllable speed, which results in some base fabrics not being transported well, causing them to break at the point of stretching or unqualified stitches of the tufting needles. At the same time, the existing base frame arranged under the base fabric is not long enough, resulting in the base fabric not being well supported when the tufting needles 4 are knitting, which easily causes the base fabric to sink and loosen when the pile is cut, resulting in incomplete cutting of the product surface. The base fabric conveying device designed by the utility model is matched with the frame 1 by designing a movable rotating mechanism, and is provided with a base fabric fixing device, which fixes the base fabric to make it parallel to the tufting needles 4, avoids skipping and missing stitches of the tufting needles 4, and makes the obtained product quality pass rate higher, thereby preventing the base fabric from sinking and loosening when the pile is cut, resulting in incomplete cutting of its surface.

[0038] In the present invention, a rotating screw A5 is provided in the upper frame of the frame 1; the rotating screw A5 is driven by a motor A9, and a moving block is installed on the rotating screw A5, and a long rod is vertically connected to the lower surface of the moving block, and the outer cylinder 2 is fixedly connected to the long rod.

[0039] The moving block is provided with a through hole, in which an internal thread is provided. The internal thread matches the external thread on the rotating screw A5, and the moving block can move along the length direction of the moving screw A.

[0040] The inner cylinder 3 is rotatably arranged in the outer cylinder 2. A rotating shaft is opened at one end of the inner cylinder 3. The rotating shaft passes through the end surface of one end of the outer cylinder 2. The end is connected to the motor B10, and the motor B10 is fixedly connected to the outer cylinder 2.

[0041] Furthermore, a limiting protrusion is provided on the outer tube body of the inner tube, which can convey the base fabric and allow the base fabric to rotate with it.

[0042] In order to facilitate the operator to put the base fabric into the outer cylinder 2, the outer cylinder 2 is provided with a cloth inlet and a cloth outlet on the upper left side. The base fabric sent by the conveying part enters the cloth inlet, and the cloth outlet is set at the lower right side of the outer cylinder 2. The inner cylinder 3 rotating inside the outer cylinder 2 sends the base fabric to the cloth outlet.

[0043] In addition, in order to assist in supporting the base fabric to prepare for tufting, the conveying part includes a rotating roller A6 and a rotating roller B7. The rotating roller A6 and the rotating roller B7 are also arranged in the left frame of the frame 1. The two are arranged up and down and are separated by a certain distance.

[0044] In addition, the present invention also designs a cloth guiding mechanism 8, which can make the base cloth introduced into the frame 1 parallel to the tufting needles 4, thereby preventing the base cloth from being tilted or uneven.

[0045] Specifically: the cloth guiding mechanism 8 includes a cloth guiding roller and a cylinder; two cylinder mechanisms are set on the front and rear chassis of the frame, the cylinder axis of the cylinder is upward and the two ends are horizontally connected to a cross bar to form a cloth guiding mechanism, and the cylinder axis is driven up and down by the cylinder to drive the cross bar up and down. After the base cloth is fixed by the rotating roller A6 and the rotating roller B7, one end of the base cloth passes under the cross bar of the cloth guiding mechanism and is inserted into the cloth inlet. The parallelism of the base cloth can be adjusted by the up and down movement of the cross bar.

[0046] It should be noted that, in this embodiment, the cloth guide roller is driven to rise or fall by an air cylinder, and a structure such as an electric telescopic rod may also be used.

[0047] Furthermore, for the knitting needle mechanism; the knitting needle mechanism includes a screw and a tufting needle; the screw includes a screw A and a screw B; in the upper frame of the frame 1, screws A and screws B are respectively provided on the left and right sides of the rotating screw, and both screws A and B are equipped with tufting needles 4 that can be raised and lowered by a cylinder to penetrate the base fabric; the tufting needles 4 can be moved left and right by the screws A and B, and the working range is increased.

[0048] It should be noted that the knitting needle mechanism is threadedly matched with the lead screw and the mounting block installed on the lead screw. When the lead screw is driven to rotate by the motor, the mounting block moves left and right along the lead screw, and the bottom of the installation is connected to the top of the cylinder body, thereby driving the tufting needle to move left and right. The lead screw transmission mechanism is a common mechanism in this technical field and will not be elaborated in detail in this embodiment.

[0049] Furthermore, a slide rail groove is provided on the frame 1, and the rotating mechanism can adaptively move left and right in the left and right slide rail grooves.

[0050] Furthermore, a guillotine shearing mechanism is detachably provided at the cloth outlet of the rotating mechanism for shearing the product processed by the tufting needles 4 .

[0051] (Example 2)

[0052] Preferably, this solution can also adjust the transmission speed by adjusting the ratio of the output transmission wheel of the PIV, thereby adjusting the ratio speed to adjust the transmission speed, so that the base fabric is transmitted more smoothly and the product quality is avoided from being unqualified due to missed stitches.

[0053] Specifically, a deceleration component can also be provided, in which a turnbuckle is provided, and the distance between the center of the belt span and the center of the pulley is adjusted by locking the belt with a nut at the end of the turnbuckle.

[0054] (Example 3)

[0055] Preferably, the knitting needle mechanism includes an electric slide arranged horizontally on the left and right frames, a slider is arranged on the electric slide, the bottom of the slider is connected to the cylinder, the cylinder is connected to the tufting needle 4, and the electric slide drives the tufting needle 4 to move left and right.

[0056] The advantages of the present invention are: simple and reasonable structure, low cost, easy implementation, and high degree of automation; it enables the base fabric to automatically complete operations such as transmission, opening, and reception in the machine equipment, thereby improving production efficiency and reducing labor expenditure costs.

[0057] like Figure 7As shown, the working principle of the utility model is as follows: when working, the base fabric is wound up and down through the rotating roller A6 and the rotating roller B7 of the conveying part of the frame 1, and then one end of the base fabric is pulled into the rotating mechanism through the bottom of the cross bar of the cloth guide mechanism. At this time, part of the base fabric is located between the outer cylinder 2 and the inner cylinder 3. At this time, the inner cylinder 3 is driven to rotate, and the base fabric is rotated to the right along with the inner cylinder 3 by the limiting protrusion on the inner cylinder 3. At the same time, the rotating mechanism is driven to move from left to right, so that the base fabric is automatically unfolded in the frame 1, and the tufting needles 4 are driven downward to pierce the unfolded base fabric. The woven base fabric is rotated to the cloth outlet of the outer cylinder 2 through the inner cylinder 3 and sent out. It is very simple and convenient to weave and convey the base fabric.

[0058] The existing tufting machines for tufted products such as carpets are often not automated enough, and the automatic base fabric conveying device used in the existing tufting machines is sometimes unable to transport the base fabric evenly when conveying the base fabric, which may cause the bottom to break during drafting or the tufting needles to move downward for knitting, resulting in missed stitches or skipped stitches, resulting in unqualified product quality. At the same time, the existing bed plate for support provided under the base fabric is not suitable, which may easily cause the base fabric to sink and loosen when the pile is cut, resulting in incomplete cutting of the product surface. The base fabric conveying device designed by the utility model is matched with the frame 1 by designing a movable rotating mechanism, and is provided with a base fabric fixing device, which fixes the base fabric to make it parallel to the tufting needles 4, avoids skipped stitches and missed stitches of the tufting needles 4, and makes the product quality pass rate higher, thereby preventing the base fabric from sinking and loosening when the pile is cut, resulting in incomplete cutting of its surface.

[0059] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An automatic conveying device for base fabric of a tufting machine, characterized by: It comprises a frame (1), a base fabric and a rotating mechanism; The rotating mechanism is arranged in the frame (1), and comprises an outer cylinder (2) and an inner cylinder (3). The inner cylinder (3) is arranged inside the outer cylinder (2) and the two are arranged coaxially. The inner cylinder (3) can rotate around the axis while the outer cylinder (2) cannot rotate. The outer cylinder (2) can be arranged on the frame (1) so as to be movable left and right. The base fabric is sent to the outer cylinder of the rotating mechanism through the rotating part on one side of the frame (1) and unfolded. The frame (1) is also provided with a knitting needle mechanism, which includes screws arranged on the top of the frame on the left and right sides and a mounting block matched with the screws; a threaded through hole is provided on the mounting block, and the mounting block is arranged on the screw in threaded cooperation with the screw via the through hole; a tufting needle that can be extended and retracted up and down is provided at the bottom of the mounting block.

2. The automatic conveying device for base fabric of a tufting machine according to claim 1, characterized in that: A rotating screw A (5) is provided in the upper frame of the frame (1); the rotating screw A (5) is driven by a motor A (9); a moving block is installed on the rotating screw A (5); a long rod is vertically connected to the lower surface of the moving block, and the outer cylinder (2) is fixedly connected to the long rod.

3. The automatic conveying device for base fabric of a tufting machine according to claim 2, characterized in that: The moving block is provided with a through hole, and an internal thread is provided in the through hole. The internal thread matches the external thread on the rotating screw A (5), and the moving block can move along the length direction of the moving screw A.

4. The automatic conveying device for base fabric of a tufting machine according to claim 2, characterized in that: An inner cylinder (3) is rotatably arranged in the outer cylinder (2), and a rotating shaft is provided at one end of the inner cylinder (3). The rotating shaft passes through an end surface of the outer cylinder (2), and the end is connected to a motor B (10). The motor B (10) is fixedly connected to the outer cylinder (2).

5. The automatic conveying device for base fabric of a tufting machine according to claim 4, characterized in that: The inner cylinder (3) is provided with a limiting protrusion, which can straighten the base fabric entering the rotating mechanism and prevent the base fabric from being disordered and uneven.

6. The automatic conveying device for base fabric of a tufting machine according to claim 4, characterized in that: The outer cylinder (2) is provided with a cloth inlet and a cloth outlet on the upper left side. The base cloth sent by the conveying part enters the cloth inlet. The cloth outlet is arranged at the lower right side of the outer cylinder (2). The base cloth is sent to the cloth outlet by the inner cylinder (3) rotating inside the outer cylinder (2).

7. The automatic conveying device for base fabric of a tufting machine according to claim 6, characterized in that: The conveying part includes a rotating roller A (6) and a rotating roller B (7). The rotating roller A (6) and the rotating roller B (7) are also arranged in the left frame of the frame (1). The two are arranged up and down and are separated by a certain distance.

8. The automatic conveying device for base fabric of a tufting machine according to claim 7, characterized in that: The screws in the knitting needle mechanism include screw A and screw B; screw A and screw B are both equipped with tufting needles (4) that can be lifted up and down by cylinder drive to pierce the base fabric; the tufting needles (4) can be moved left and right by screw A and screw B.

9. The automatic conveying device for base fabric of a tufting machine according to claim 8, characterized in that: The frame (1) is also provided with a cloth guiding mechanism (8), which can make the base cloth introduced into the frame (1) parallel to the tufting needles (4), thereby preventing the base cloth from being tilted or uneven.

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