Four-side quilting machine

Abstract

The utility model discloses a four-side quilting machine which comprises a machine frame, a feeding mechanism is arranged on one side of the machine frame, a discharging mechanism is arranged on the other side of a machine head, two groups of quilting mechanisms are arranged on the machine frame, and the two groups of quilting mechanisms can realize parallel and staggered quilting actions under the driving of a driving mechanism connected with the two groups of quilting mechanisms. Compared with the prior art, the double-machine-head structure is designed, parallel cross movement of the double machine heads is achieved, the working efficiency is effectively improved, the parallel quilting seam distance is reduced to be within 10 mm, and the width of warping parts at the two ends of a cut quilt core is reduced. In addition, the distance between the machine heads of the two groups of quilting mechanisms in the scheme can be adjusted, so that the actual quilting distance can be adjusted according to actual needs, and the quilt core can be kept flat when quilting in the width direction is carried out by pulling the cloth through the left cloth pulling device and the right cloth pulling device.

Description

Technical Field

[0001] The utility model relates to a quilting machine, in particular to a four-side quilting machine for the field of making quilt cores. Background Art

[0002] The quilting machine plays a very important role in the production of quilt cores, mainly for sewing the four sides of the quilt core to ensure the stability of the combination of multiple layers of silk wadding in the quilt core. The existing quilting machines generally adopt a single-head setting. The single head realizes the horizontal and vertical sewing of the quilt core and fabric under the drive of the belt, making it difficult to improve the sewing efficiency. Since the quilt core is composed of loose fibers and is itself fluffy and difficult to be flattened smoothly, it is found during quilting that as the quilting head moves forward, the fluffy fiber fabric will be pushed to one side, and wrinkles and deformations will appear on the surface. The side seams of the quilted bedding wrinkle in the length direction, and the side seams in the width direction are wavy and distorted, making it difficult to ensure the quilting quality. With the requirements of personalization and aesthetics, the width of the two quilting lines is required to be less than 10 mm and parallel. Based on the above existing problems, the utility model patent can effectively improve the quilting efficiency, eliminate the wrinkles during quilting, and the width between parallel quilting lines is small. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a four-side quilting machine to avoid the deformation during the quilting and embroidery of the side seams of the quilt core and shorten the distance between the side seams at the ends of two quilt cores.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A frame;

[0006] A feeding mechanism, arranged on the feeding side of the frame to uniformly convey the quilt core to be sewn;

[0007] A discharging mechanism, arranged on the discharging side of the frame to synchronously convey the sewn quilt core with the feeding mechanism;

[0008] A quilting mechanism, which has two groups and is arranged between the feeding mechanism and the discharging mechanism in a parallel and staggered moving manner to simultaneously and parallelly sew the edges of the quilt core and the fabric through the two groups of quilting mechanisms.

[0009] Preferably, the quilting mechanism includes

[0010] A first guide rail group, which includes at least two first guide rails arranged along the length direction of the frame;

[0011] A second guide rail group, which includes at least two second guide rails arranged below the first guide rails and parallel to the first guide rails;

[0012] The head assembly is slidably mounted on the first guide rail group;

[0013] The base assembly is slidably mounted on the second guide rail group and moves synchronously facing the head assembly;

[0014] The driving mechanism is respectively drivingly connected to the head assembly and the base assembly to drive the opposite head assembly and base assembly to move synchronously.

[0015] Preferably, the head assembly includes a head mounting seat arranged on the first guide rail group. A first slide rail extending along the feeding and discharging direction is arranged on the head mounting seat, and the head mounting seat is slidably mounted on the first slide rail and can adjust its position; the base assembly includes a sliding seat arranged on the second guide rail group. A second slide rail parallel to the first slide rail is arranged on the sliding seat, and the base is slidably mounted on the second slide rail and can adjust its position.

[0016] Preferably, the first guide rail and the second guide rail are sliding tracks with a rectangular cross-section.

[0017] Preferably, the driving mechanism includes a first motor arranged at one end of the frame. A first transmission wheel is arranged on the output shaft of the first motor. It also includes a vertically arranged transmission shaft, which is rotatably arranged on the frame. A second transmission wheel is coaxially arranged on the transmission shaft. A first belt is wound around the first transmission wheel and the second transmission wheel. Third transmission wheels are coaxially arranged at the upper and lower ends of the transmission shaft. A fourth transmission wheel opposite to the third transmission wheel is rotatably arranged on the side of the frame away from the transmission shaft. A second belt is wound around the third transmission wheel and the fourth transmission wheel. The two second belts are respectively drivingly connected to the head mounting seat and the sliding seat.

[0018] Preferably, cloth pulling mechanisms are symmetrically arranged at both ends of the frame. When quilting in the width direction, the cloth pulling mechanisms clamp both sides of the quilt core and apply pulling in the width direction to the quilt core.

[0019] Preferably, the cloth pulling mechanism includes a horizontal telescopic cylinder. A first clamping plate is telescopically connected to the horizontal telescopic cylinder along the width direction of the quilt core. A vertical telescopic cylinder is connected to the first clamping plate. A second clamping plate is connected to the vertical telescopic cylinder. The second clamping plate approaches and moves away from the first clamping plate under the drive of the vertical telescopic cylinder.

[0020] Preferably, the feeding mechanism includes a bracket. At least two rollers are rotatably mounted on the bracket. Gears are respectively arranged at the ends of the at least two rollers. Adjacent gears are meshed. A second motor is also arranged on the bracket. Belts are respectively wound around the output shaft of the second motor and one of the rollers.

[0021] Preferably, the discharging mechanism has the same structure as the feeding mechanism and is centrally symmetric on both sides of the frame.

[0022] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0023] 1. In this solution, two quilting mechanisms are arranged on a single frame, and the two quilting mechanisms can move in parallel. When quilting the two side edges of the quilt core, the two quilting mechanisms move to both sides of the frame respectively, and synchronously and symmetrically quilt the two sides of the quilt core. This synchronous quilting action on the two side edges can effectively improve the quilting efficiency and the stability of the quilt core during quilting, avoiding the deformation in the length direction caused by the excessive distance between the two traditional quilting heads and the stretching of the quilt core by its own gravity, thus ensuring that there will be no wavy undulations in the later stage of quilting with high height in the length direction.

[0024] In addition, in this solution, since the two quilting mechanisms are arranged on a single frame and the longitudinal distance between them is small, when quilting the two ends of the quilt core, the edge seam distance between the two quilt cores can be made as small as possible while ensuring straightness. After the quilt core is cut, the width of the unstitched part at its end can be greatly shortened, ensuring the beauty and practicality of the quilt core.

[0025] It should also be noted that since the distance between the two quilting mechanisms is very small during end quilting, the longitudinal deformation amount of the quilted part is also correspondingly reduced during quilting, which can effectively ensure the straightness of the edge seam during edge quilting in the width direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural view of the present utility model;

[0027] Figure 2 is a left view of the present utility model;

[0028] Figure 3 is a sectional view of the present utility model;

[0029] Figure 4 is a partially enlarged view of the label I in the present utility model;

[0030] Figure 5 is a partially enlarged view of the label II in the present utility model.

[0031] REFERENCE NUMERALS:

[0032] 100. Frame

[0033] 200. Feeding mechanism 210. Bracket 220. Roller 230. Gear 240. Second motor 250. Third belt

[0034] 300. Discharging mechanism

[0035] 400. Quilting mechanism 410. First guide rail group 411. First guide rail 420. Second guide rail group 421. Second guide rail 430. Head assembly 431. Head 432. Head mounting seat 433. First slide rail 440. Machine base assembly 441. Machine base 442. Slide base 443. Second slide rail 450. Driving mechanism 451. First motor 452. Transmission shaft 453. First transmission wheel 454. First belt 455. Second transmission wheel 456. Third transmission wheel 457. Fourth transmission wheel 458. Second belt

[0036] 500. Fabric pulling mechanism 510. First stretching cylinder 520. First clamping plate 530. Second clamping plate 540. Second stretching cylinder. Detailed implementation mode

[0037] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the protection scope of the present utility model.

[0038] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0039] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0040] As Figures 1 to 4 shown, a four-sided quilting machine includes a frame 100. A feeding mechanism 200 and a discharging mechanism 300 are respectively arranged on both sides of the frame. The quilt core to be sewn is evenly transported through the feeding mechanism and evenly pulled through the discharging mechanism, so as to pass through the frame with a constant tension.

[0041] While the quilt core is passing at a uniform speed, two sets of quilting mechanisms 400 installed on the frame move in parallel along the length direction of the frame to perform synchronous quilting on the edge of the quilt core.

[0042] It should be noted that, in the present solution, two sets of quilting mechanisms are arranged side by side in the frame, and the spacing between the sewing needles in the two sets of quilting mechanisms is between 5 and 10 mm, so as to ensure that the spacing between the side seams quilted by the two sets of quilting mechanisms in the width direction of the quilt core is minimized as much as possible (the spacing of traditional double-head quilting machines is between 1.5 and 2 m. Because the quilt core has strong elastic tensile properties, under the action of this width, the two ends are severely deformed, and the quilting lines in the width direction are prone to skew. In order to ensure that the quilting lines in the width direction are not cut during subsequent cutting and separation, as well as the straight lines at both ends of the quilt core, the existing quilting distance between the ends of the two quilt cores usually leaves a spacing of about 50 mm, and this width will cause the two ends of the quilt core to warp more).

[0043] Specifically, Figures 1 to 4 As shown, the quilting mechanism includes a first guide rail group 410 arranged on the top of the frame, and the first guide rail group consists of at least two first guide rails 411 extending horizontally along the length direction of the frame 100.

[0044] A second guide rail group 420 is disposed at the lower portion of the rack. The second guide rail group includes at least two second guide rails 421. The two second guide rails also extend horizontally along the length direction of the rack.

[0045] like Figure 1 As shown, a head assembly 430 is mounted on the first rail assembly, and the head assembly can slide on the first rail assembly under the drive mechanism connected thereto. A base assembly 440 is mounted on the second rail assembly, and the base assembly and the head assembly face each other and can move synchronously with the head assembly under the drive of the drive assembly 450.

[0046] It should be noted that if Figure 1As shown in the figure, in this solution, to achieve the consistency of the movement of the head component and the base component, the driving mechanism 450 includes a first motor 451 installed on the side of the frame 100. A first transmission wheel 453 is coaxially installed on the output shaft of the first motor. At the same time, a transmission shaft 452 is rotatably installed on the side of the frame. A second transmission wheel 455 is coaxially installed at the middle position of the transmission shaft. A first belt 454 is wound around the first transmission wheel and the second transmission wheel to achieve the driving connection between the transmission shaft and the first motor. At the same time, a third transmission wheel 456 is coaxially installed at the upper and lower ends of the transmission shaft respectively. On the other side of the frame away from the third transmission wheel, two fourth transmission wheels 457 are rotatably installed. The two fourth transmission wheels are also distributed vertically and are in the same horizontal plane as the corresponding third transmission wheels. At this time, by winding a second belt 458 around the third transmission wheel and the fourth transmission wheel, the second belt can be driven by the rotating first motor. It should be noted that in this solution, the upper second belt is connected to the head component to ensure that the second belt can drive the head component to slide on the first guide rail group. The lower second belt is connected to the base component to synchronously drive the movement of the base component while the head component is moving.

[0047] It should be noted that when quilting the edges of quilt cores with different materials and thicknesses, different requirements are imposed on the quilting spacing between two quilt cores. Therefore, it is preferable that the spacing between the sewing needles of the two quilting mechanisms is flexibly adjustable.

[0048] Specifically, as Figures 1 to 4 shown, in this solution, the head component 430 includes a head mounting seat 432, which is mounted on two first guide rails in a sliding fit manner so as to be able to slide back and forth along the axis of the first guide rail. At the same time, a head is mounted on the head mounting seat so that the head 431 can move synchronously with the head mounting seat. It should be noted that as Figure 1 shown, in the driving mechanism, the upper second belt is connected to the head mounting seat to drive the head mounting seat to slide back and forth on the first guide rail group. In order to adjust the spacing between the sewing needles in the two quilting mechanisms, it is necessary to enable the head to adjust its position along the inlet and outlet direction of the quilt core on the head mounting seat. Specifically, a first slide rail 433 is further provided on the head mounting seat. The first guide rail extends horizontally along the advancing direction of the quilt core, and the head is assembled in sliding fit on the first slide rail so as to be able to slide along the extending direction of the slide rail. It should be noted that in order to ensure the stability of the head during quilting, bolts are provided on the head so that the head can be fixed on the head mounting seat by means of bolt tightening.

[0049] Meanwhile, the base assembly in this solution also needs to have a position adjustment function adapted to the head assembly, so as to always maintain a facing relationship with the head assembly and ensure that quilting can be carried out. Specifically, the base assembly 440 includes a slide 442 mounted on the second guide rail group 420. The slide is slidably mounted on at least two second guide rails to maintain good stability during movement. At the same time, a second slide rail 443 parallel to the first slide rail is provided on the slide, and the base portion adapted to the head is mounted on this second slide rail. It should be noted that the base portion has a chute to enable sliding for position adjustment on the second slide rail. When quilting, to maintain the stability of the base, a tightening bolt is also screwed on the base to ensure the stability between the base and the slide through the frictional force generated after the tightening bolt abuts against the second slide rail or the slide. It should be noted that the positions of the head assembly and the base assembly in the above solution are adjustable, so that the spacing of the sewing lines quilted on the quilt core between the two quilting mechanisms 400 can be flexibly adjusted according to the required specifications. That is, by adjusting the position of the head in the head mounting seat in the head assembly and the position of the base on the slide at the same time.

[0050] In addition, it should be noted that the length of the quilting machine for sewing the edge of the quilt core is usually about 3m, so the lengths of the first guide rail and the second guide rail are usually greater than 2.5m. Under such a large span, the traditional guide rod structure will inevitably bend under the gravity of the mounted head and base, thus affecting the smooth and accurate progress of quilting. To avoid the bending of the first guide rail and the second guide rail, the first guide rail and the second guide rail in this solution both adopt the form of rectangular rails that are in full contact with the frame. That is, the first guide rail and the second guide rail are fully attached to the frame and are fixed by evenly distributed bolts during this period to ensure that the guide rails will not bend and deform when the head assembly and the base assembly run on the guide rails.

[0051] It should be noted that when quilting in the width direction of the quilt core, the two sides of the quilt core can be stretched in the width direction to ensure that the quilt core remains flat during quilting and improve the flatness of quilting in the width direction. Specifically, as Figure 1 shown, two sets of fabric pulling mechanisms 500 are symmetrically arranged on both sides of the frame 100. When quilting the quilt core in the width direction, the fabric pulling mechanisms can clamp the two side edges of the quilt core and then exert a relative pulling force on the edge of the quilt core. Under this pulling force, the quilt core is straightened and stretched in the width direction to ensure that the side seams after quilting do not show undulating waves.

[0052] Specifically, it should be noted that the laying mechanism 500 in the above solution includes a first drafting cylinder 510, which is fixedly installed on one side of the frame, and the telescopic rod of the first drafting cylinder can expand and contract in the width direction of the quilt core. A first clamping plate 520 is fixedly installed on the telescopic rod of the first drafting cylinder. The first clamping plate is Y-shaped. A second drafting cylinder 540 is installed on the first clamping plate. The second drafting cylinder is vertically arranged, and a second clamping plate 530 parallel to the first clamping plate is installed on the telescopic rod of the second drafting cylinder. The second clamping plate is driven to approach or move away from the first clamping plate through the action of the second drafting cylinder.

[0053] When quilting in the width direction of the quilt core, the second drafting cylinder is in the extended state, and the second clamping plate and the first clamping plate are separated from each other. Then, the first drafting cylinder extends, the first clamping plate extends under the edge of the quilt core, and the second clamping plate extends above the edge of the quilt core. Next, the second drafting cylinder retracts, and the edge of the quilt core is clamped. Then, the first drafting cylinder retracts to straighten the quilt core in the width direction and ensure the straightness of the side seam during horizontal quilting.

[0054] It should be noted that when quilting the vertical edge of the quilt core, keeping the quilt core passing through the quilting mechanism at a constant speed and in a constant stretching state is an important factor to ensure that the side seam of the quilt core can remain straight after quilting. For this reason, the feeding mechanism 200 in this solution specifically includes a bracket 210 connected to the frame 100. Three rollers 220 are rotatably installed on the bracket. The three rollers are arranged in parallel, and a gap for the quilt core to pass through is left between adjacent rollers. At the same time, a gear 230 is coaxially installed at the end of each of the three rollers, and adjacent gears are meshed to achieve synchronous rotation of the three rollers. In addition, as Figure 1 shown, a second motor 240 is also installed on the frame 210. A third belt 250 is wound around the output shaft of the second motor, and the third belt is also wound around the end of one of the rollers, so that the second motor can drive one of the rollers to rotate as the driving roller. When quilting the edge of the quilt core, the second motor rotates and drives the three rollers to rotate. The quilt core passes through the gap between the three rollers and is squeezed and conveyed by the three rollers, and finally the quilt core is conveyed to the quilting mechanism at a constant speed. It should be noted that because the quilt core is clamped by the three rollers, during quilting, the external pulling has no effect on the quilt core during quilting, so as to ensure the stability of the stretching state of the quilt core during quilting to the greatest extent.

[0055] It should be noted that, as Figure 1 shown, in this solution, the feeding mechanism and the discharging mechanism 300 have the same structure and are symmetrically centered on the frame 100, so as to ensure that the discharging mechanism can pull out the quilt core that has been quilted at the same feeding speed as the feeding mechanism.

[0056] Working principle: When quilting the edge of the quilt core, the staff passes the quilt core to be quilted through the feeding mechanism, the quilting mechanism and the discharging mechanism in sequence, and then starts the above mechanisms simultaneously. At this time, the feeding mechanism feeds the quilt core uniformly towards the quilting mechanism through the uniform rotation of the rotating rod, and the discharging mechanism pulls and discharges the quilt core at the same speed as the feeding speed to ensure that the quilt core is in a straight state when quilting the vertical edge. When quilting the longitudinal edge in this state, it is not easy to have edge bending and wrinkling. When quilting in the transverse (width) direction, the cloth pulling mechanism pulls both sides of the quilt core. After the quilt core is straightened, it can effectively ensure the parallelism of the side seams sewn by the two quilting mechanisms. Furthermore, when narrowing the side seams of two adjacent quilt cores, there will be no skew or even crossing, effectively ensuring the quilting quality of the quilt core.

[0057] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A four-side quilting machine, characterized in that: include Rack(100); A feeding mechanism (200) is arranged on the feeding side of the frame (100) and conveys the quilt core to be sewn at a uniform speed; A discharge mechanism (300) is arranged on the discharge side of the frame (100) and synchronously delivers the stitched quilt core with the feeding mechanism (200); The quilting mechanism (400) has two groups, and is arranged between the feeding mechanism (200) and the discharging mechanism (300) in a manner capable of parallel and staggered movement, so that the quilt core and the edges of the fabric can be sewed in parallel at the same time through the two groups of quilting mechanisms.

2. A four-side quilting machine as claimed in claim 1, characterized in that: The quilting mechanism (400) comprises A first guide rail group (410), the first guide rail group (410) comprising at least two first guide rails (411), the first guide rails (411) being arranged along a length direction of the frame (100); a second guide rail group (420), the second guide rail group (420) comprising at least two second guide rails (421), the second guide rails (421) being arranged below the first guide rail (411) and arranged parallel to the first guide rail (411); A machine head assembly (430) slidably mounted on the first guide rail assembly (410); A machine base assembly (440) is slidably mounted on the second guide rail assembly (420) and moves synchronously with the machine head assembly (430) in a facing relationship; The driving mechanism is respectively connected to the head assembly (430) and the base assembly (440) to drive the head assembly (430) and the base assembly (440) to move synchronously relative to each other.

3. A four-side quilting machine as claimed in claim 2, characterized in that: The head assembly (430) comprises a head mounting seat (432) arranged on the first guide rail group (410), the head mounting seat (432) is provided with a first slide rail (433) extending along the feeding and discharging direction, and the head mounting seat (432) is slidably mounted on the first slide rail (433) in an adjustable position; the base assembly (440) comprises a slide seat (442) arranged on the second guide rail group (420), the slide seat (442) is provided with a second slide rail (443) parallel to the first slide rail (433), and the base (441) is slidably mounted on the second slide rail (443) in an adjustable position.

4. A four-side quilting machine as claimed in claim 3, characterized in that: The first guide rail (411) and the second guide rail (421) are sliding rails with rectangular cross-sections.

5. A four-side quilting machine as claimed in claim 3, characterized in that: The driving mechanism (450) comprises a first motor (451) arranged at one side end of the frame (100), a first transmission wheel (453) being arranged on the output shaft of the first motor (451), and a vertically arranged transmission shaft (452), the transmission shaft (452) being rotatably arranged on the frame (100), a second transmission wheel (455) being coaxially arranged on the transmission shaft (452), and a first belt (454) being wound around the first transmission wheel (453) and the second transmission wheel (455). On the delivery wheel (455), a third transmission wheel (456) is coaxially arranged at the upper and lower ends of the transmission shaft (452); a fourth transmission wheel (457) opposite to the third transmission wheel (456) is rotatably arranged on the side of the frame (100) away from the transmission shaft (452); a second belt (458) is wound around the third transmission wheel (456) and the fourth transmission wheel (457); and the two second belts (458) are respectively drivingly connected to the machine head mounting seat (432) and the slide seat (442).

6. A four-side quilting machine as claimed in claim 1, characterized in that: Cloth pulling mechanisms (500) are symmetrically arranged at both ends of the frame (100); during quilting in the width direction, the cloth pulling mechanisms (500) clamp the two sides of the quilt core and pull the quilt core in the width direction.

7. A four-side quilting machine as claimed in claim 6, characterized in that: The cloth pulling mechanism (500) includes a horizontal telescopic cylinder (510), a first clamping plate (520) connected to the horizontal telescopic cylinder (510) and capable of being telescoped along the width direction of the quilt core, a vertical telescopic cylinder (540) connected to the first clamping plate (520), and a second clamping plate (530) connected to the vertical telescopic cylinder (540), and the second clamping plate (530) is driven by the vertical telescopic cylinder (540) to move closer to or away from the first clamping plate (520).

8. A four-side quilting machine as claimed in claim 1, characterized in that: The feeding mechanism (200) comprises a bracket (210), on which at least two rollers (220) are rotatably mounted, gears (230) are respectively arranged at the ends of the at least two rollers (220), and adjacent gears (230) are meshed with each other. A second motor (240) is also arranged on the bracket (210), and a belt (250) is respectively wound around an output shaft of the second motor (240) and one of the rollers (220).

9. A four-side quilting machine as claimed in claim 8, characterized in that: The material discharging mechanism (300) has the same structure as the material feeding mechanism (200) and is centrally symmetrical on both sides of the frame (100).

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