Double-sided compound plush cutting machine and weaving method thereof

Abstract

The application discloses a double-sided compound plush cutting machine and a weaving method thereof, which comprises a rack, wherein the rack is provided with an upper needle cylinder, a middle needle cylinder and a lower needle cylinder; a bottom yarn needle, a bottom yarn needle slot and a bottom yarn needle triangle are arranged on the upper needle cylinder; a sinker, a sinker slot and a sinker triangle are arranged on the middle needle cylinder, and the sinker is composed of two secondary sinkers; the tail of each secondary sinker is provided with a sinker heel, and the head is provided with a pushing wool head; a groove hook needle assembly, a groove hook needle assembly slot for placing the groove hook needle assembly and a groove hook needle assembly triangle for driving the groove hook needle assembly to move are arranged on the lower needle cylinder; the double-sided weaving and plush cutting structure are formed by arranging the bottom yarn needle, the sinker and the groove hook needle assembly on the upper needle cylinder, the middle needle cylinder and the lower needle cylinder respectively, the double-sided plush fabric with the plush effect on both sides can be formed at one time, and secondary processing such as glue compounding or post-processing fluffing is not needed.

Description

Technical Field

[0001] This invention relates to the field of weaving machinery technology, specifically to a double-sided composite cut pile machine and its weaving method. Background Technology

[0002] Existing plush knitting machines typically employ a single-sided cutting structure during yarn formation. This means the cutting mechanism is only located in the lower cylinder, where loops are drawn by the latch needle before being cut by the cutting needle. This type of cutting needle usually features an integrated hook and needle design, with a hook at the top and a cutting edge at the bottom. It works in conjunction with the upper coil needle and the lower corner track to complete the drawing and cutting actions. Due to the limitations of this integrated hook and needle structure, it can only cut yarn on the same knitting surface, thus limiting it to conventional single-sided plush fabrics—only one side forms the plush layer, while the other side remains the base fabric.

[0003] Fabrics woven on single-sided cut pile machines have significant drawbacks: the base fabric is typically made of single yarns, resulting in a monotonous and coarse texture, a loose structure, and easy deformation. Therefore, only the pile side can be used as the front of the fabric; the reverse side cannot be used as the outer surface. In home textile applications, if a fabric with a pile effect on both sides is required, it often necessitates bonding two pieces of single-sided pile fabric together with glue, or treating ordinary cut pile fabric with finishing processes such as napping and brushing to create a pile effect on the back. These processes involve two molding steps, increasing production steps and costs. Furthermore, glue bonding poses environmental problems, and the napped pile from the finishing process has poor adhesion to the greige fabric, leading to easy shedding.

[0004] In recent years, the market demand for double-sided plush fabrics has been increasing, requiring that both the front and back sides of the fabric can be used as the outer surface, and that the two sides can have different patterns. To address this issue, some technical solutions attempt to achieve double-sided cutting on circular knitting machines, for example, by setting up two sets of cutting mechanisms to process the yarns on both sides separately. However, the structure is complex and the knitting stability needs improvement. Another solution uses a special sinker and cutting needle structure. By setting a yarn-blocking part on the sinker, the cutting needle hooks the yarn and passes it through the sinker to complete the cutting. However, this solution is mainly suitable for single-sided cutting scenarios and has limited effect on the plush constraint during double-sided weaving.

[0005] A key technical challenge in double-sided cut pile weaving is that after the cutter cuts the pile, the severed pile lacks external restraint and easily spreads out or even enters the yarn surface, affecting the fabric's appearance quality and weaving stability. Existing technologies lack effective pile restraint and guiding structures, making it difficult to guarantee the weaving quality of double-sided pile fabrics.

[0006] In view of the shortcomings of the prior art, the present invention provides a double-sided composite cut pile machine, which aims to solve the technical problems of double-sided pile fabrics requiring two forming processes, low production efficiency, poor environmental performance, and easy scattering and movement of pile after cutting. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to address the shortcomings of the prior art by providing a double-sided composite cut pile machine and its weaving method, which is compact in structure, formed in one step, has good pile restraint effect, and can be used as the front side of the fabric on both sides.

[0008] The technical problem to be solved by the present invention is achieved through the following technical solution: a double-sided composite shearing machine, comprising a frame, wherein the frame has an upper needle cylinder, a middle needle cylinder and a lower needle cylinder; The upper cylinder is provided with a bottom yarn needle, a bottom yarn needle groove for placing the bottom yarn needle, and a bottom yarn needle triangle for driving the bottom yarn needle to move. The middle syringe is equipped with a settling plate, a settling plate groove for placing the settling plate, and a settling plate triangle for driving the settling plate in the settling plate groove to move. The settling plate pushes the cut hair into the lower syringe. The lower syringe is provided with a grooved hook needle assembly, a grooved hook needle assembly needle groove for placing the grooved hook needle assembly, and a grooved hook needle assembly triangle for driving the grooved hook needle assembly to move.

[0009] The technical problem to be solved by the present invention can also be achieved by the following technical solution: the double-sided composite cutting wool machine described above, wherein the grooved hook needle assembly triangle includes grooved hook I, grooved hook II, cutting blade and yarn needle; Both the groove hook I and the groove hook II have a hook body at the head and a hook heel at the tail. The cutting tool has a blade body at the head and a blade heel at the tail. The head of the veil needle has a hook, and the tail has a hook heel.

[0010] The technical problem to be solved by the present invention can also be achieved through the following technical solution: In the double-sided composite shearing machine described above, the groove hook I and groove hook II are both fixed together by three secondary groove hooks in the thickness direction. The tail of each of the three secondary groove hooks has the hook heel. The heads of the secondary groove hooks on both sides have the hook body, while the head of the secondary groove hook in the middle does not have the hook body, so that a groove hook gap is formed between the heads of the secondary groove hooks on both sides.

[0011] The technical problem to be solved by the present invention can also be achieved by the following technical solution: In the above-described double-sided composite shearing machine, among the three secondary groove hooks constituting groove hook I or groove hook II, the length of the middle secondary groove hook is between one-third and two-thirds of the length of the secondary groove hooks on both sides.

[0012] The technical problem to be solved by the present invention can also be achieved through the following technical solution: the double-sided composite cutting wool machine described above, wherein the groove hook needle assembly triangle includes a groove hook track section triangle for guiding the hook heel on groove hook I, a groove hook track section triangle for guiding the hook heel on groove hook II, a cutting blade track triangle for guiding the blade heel on the cutting blade, and a yarn needle track triangle for guiding the needle hook heel on the yarn needle.

[0013] The technical problem to be solved by the present invention can also be achieved by the following technical solution: the double-sided composite shearing machine described above, wherein the settling plates are a pair; The settling plate triangle has two tracks for guiding the movement of the plate heels on the settling plate.

[0014] The technical problem to be solved by the present invention can also be achieved through the following technical solution: a weaving method using a double-sided composite cut pile machine as described above, the steps of which are as follows: Step (1): When the upper needle cylinder, middle needle cylinder and lower needle cylinder rotate synchronously, the bottom needle set in the upper needle cylinder, the sinker set in the middle needle cylinder and the grooved hook needle assembly set in the lower needle cylinder are rotated circumferentially to the corresponding working area. Step (2): The heel of the bottom yarn needle moves along the bottom yarn needle groove under the guidance of the bottom yarn needle triangle. The bottom yarn needle extends and hooks the bottom yarn. Then the bottom yarn needle retracts under the action of the bottom yarn needle triangle and weaves the bottom yarn into the base fabric structure. Step (3): During the rotation of the lower cylinder, the needle hook heel of the yarn needle in the groove hook needle assembly moves along the needle groove of the groove hook needle assembly under the guidance of the yarn needle track triangle. The yarn needle extends and hooks the yarn. Then the yarn needle continues to move under the action of the yarn needle track triangle, pulling the yarn into a loop of predetermined height. In step (4), while the yarn needle forms a loop, the heel of the groove hook I in the groove hook needle assembly moves along the needle groove of the groove hook needle assembly under the guidance of a section of the groove hook track. The groove hook I extends and its head hook body approaches the loop formed by the yarn needle. The heel of the groove hook II moves along the needle groove of the groove hook needle assembly under the guidance of a section of the groove hook track. The groove hook II extends and its head hook body is positioned opposite to the hook body of the groove hook I. The two together clamp and position the loop. The groove hook gap formed between the heads of the groove hook I and the groove hook II corresponds to the position of the loop. The timing and height of the extension of groove hook I and groove hook II are controlled by the track curves of the first and second triangular sections of the groove hook track, respectively, so that the height difference between the hook bodies of groove hook I and groove hook II when clamping the loop is less than 0.2 mm, thus ensuring the stability of the loop positioning. Step (5): After the loops are clamped and positioned by the groove hooks I and II, the heel of the cutter moves along the groove of the groove hook needle assembly under the guidance of the cutter track triangle. The cutter extends and its head passes through the groove hook gap between the groove hooks I and II, cutting the loops clamped between the groove hooks I and II to form plush. Step (6): After the cutter cuts the loops, the heel of the sinker on the middle syringe moves along the sinker groove under the guidance of the sinker triangle, and the sinker extends out to push the cut loops into the lower syringe. Step (7): After the push-down is completed, the heel of the sinker retracts and resets along the sinker groove under the continued guidance of the sinker triangle; at the same time, the heel of the groove hook I retracts and resets under the guidance of the first section of the groove hook track triangle, the heel of the groove hook II retracts and resets under the guidance of the second section of the groove hook track triangle, the heel of the cutter retracts and resets under the guidance of the cutter track triangle, and the heel of the yarn needle retracts and resets under the guidance of the yarn needle track triangle. Step (8): Repeat steps (2) to (7). As the upper, middle and lower cylinders rotate continuously, the bottom yarn needle, sinker and groove hook needle assembly circulate under the guidance of each triangular track. The base fabric structure woven in the upper cylinder and the pile formed in the lower cylinder are combined to form a double-sided composite pile fabric with pile structure on both sides.

[0015] Compared with the prior art, the beneficial technical effects of the present invention are: (1) The present invention forms a double-sided knitting and cutting structure by setting bottom yarn needles, sinkers and groove hook needles in the upper, middle and lower needle cylinders respectively, which can form a double-sided plush fabric with plush effect on both sides in one step, without the need for secondary processing such as glue bonding or post-processing such as napping.

[0016] (3) Both groove hook I and groove hook II are made of three secondary groove hooks fixed together in the thickness direction. The heads of the secondary groove hooks on both sides have hook bodies, while the head of the secondary groove hook in the middle does not have a hook body, forming a groove hook gap. This composite structure can better cooperate with the cutting knife and yarn needle during the cutting process, ensuring the cutting accuracy and improving the service life of the groove hooks.

[0017] (4) Among the three secondary groove hooks that make up groove hook I or groove hook II, the length of the middle secondary groove hook is between one-third and two-thirds of the length of the secondary groove hooks on both sides. This three-section length design allows the groove hook to have better elastic adjustment space during operation, and can adapt to different yarn specifications and weaving tension requirements.

[0018] (5) The groove hook needle assembly triangle includes a groove hook track section 1 triangle, a groove hook track section 2 triangle, a cutter track triangle, and a yarn needle track triangle, which independently guide the groove hook I, groove hook II, cutter, and yarn needle respectively; the sinker plate triangle has two tracks for guiding the movement of the sinker plate's heel. The independent control of multiple tracks makes the movements of each knitting element coordinated and stable, enabling the knitting of complex double-sided patterns. Attached Figure Description

[0019] Figure 1 This is a partial cross-sectional view of the double-sided composite shearing machine of the present invention; Figure 2 This is a schematic diagram of the structure of the bottom yarn needle triangle and the bottom yarn needle of the present invention; Figure 3 This is a schematic diagram of the structure of the triangular grooved hook needle assembly and the grooved hook needle assembly of the present invention; Figure 4 This is a schematic diagram of the triangular settling plate and the settling plate structure of the present invention; Figure 5 This is an exploded view of the structure of the groove hook II of the present invention; Figure 6 This is a schematic diagram of the front view structure of the settling sheet of the present invention; Figure 7 This is a schematic diagram of the left-side structure of the settling plate of the present invention; Figure 8 for Figure 7 A magnified schematic diagram of a portion of the structure.

[0020] Reference numerals: 1. Frame; 2. Upper cylinder; 3. Middle cylinder; 4. Lower cylinder; 5. Bottom yarn needle; 6. Bottom yarn needle triangle; 7. Sinking plate; 8. Sinking plate triangle; 9. Base fabric composite triangle; 10. Pusher head; 11. Cutting knife track triangle; 12. Groove hook needle assembly triangle; 13. Groove hook I; 14. Groove hook II; 15. Cutting knife; 16. Face yarn needle; 17. Knife body; 18. Secondary groove hook; 19. Groove hook track section 1 triangle; 20. Groove hook track section 2 triangle; 21. Face yarn needle track triangle. Detailed Implementation

[0021] The specific technical solutions of the present invention will be further described below with reference to the accompanying drawings, so as to enable those skilled in the art to further understand the present invention, without constituting a limitation on its rights.

[0022] Example 1, referring to Figure 1-4A double-sided composite shearing machine includes a frame 1, which has an upper cylinder 2, a middle cylinder 3, and a lower cylinder 4. This is existing technology, and its dimensions can be selected according to usage requirements. The upper cylinder 2 has a bottom yarn needle 5, a bottom yarn needle groove for placing the bottom yarn needle 5, and a bottom yarn needle triangle 6 for driving the bottom yarn needle 5. The middle cylinder 3 has a sinker plate 7, a sinker plate groove for placing the sinker plate 7, and a sinker plate triangle 8 for driving the sinker plate 7 within the sinker plate groove. The tail of the sinker plate 7 has a heel, the position of which can be selected according to usage requirements. The head has a pusher head 10, which can be a right-angled trapezoid with an arc-shaped hypotenuse. The sinker plate pushes the cut downy fibers into the lower cylinder. The lower cylinder 4 has a grooved hook needle assembly, a grooved hook needle assembly groove for placing the grooved hook needle assembly, and a grooved hook needle assembly triangle 12 for driving the grooved hook needle assembly.

[0023] In Example 1, the bottom yarn needles 5 are evenly arranged in the bottom yarn needle grooves along the circumference of the upper needle cylinder 2. The bottom yarn needle triangles 6 are fixed to the frame 1 and act on the heel of the bottom yarn needles 5, controlling the radial movement of the bottom yarn needles 5 to hook the bottom yarn and form the base fabric. The sinker plates 7 are evenly arranged in the sinker plate grooves along the circumference of the middle needle cylinder 3. The sinker plate triangles 8 are fixed to the frame 1 and act on the heel of the sinker plate 7, controlling the radial movement of the sinker plate 7. The groove hook needle assembly is evenly arranged in the groove of the groove hook needle assembly along the circumference of the lower needle cylinder 4. The groove hook needle assembly triangles 12 are fixed to the frame 1 and act on the heels of each component of the groove hook needle assembly, controlling the movement of each component in the groove hook needle assembly to complete the feeding, looping, and cutting of the face yarn. Through the coordinated operation of the above structures, the one-time forming of double-sided plush fabric is achieved. In addition, a base fabric composite triangle 9 can be arranged on the track of each bottom yarn needle triangle 6, such as... Figure 2 As shown.

[0024] Example 2, a double-sided composite shearing machine as described in Example 1, wherein the grooved hook needle assembly triangle 12 includes grooved hook I 13, grooved hook II 14, cutter 15 and yarn needle 16; the heads of grooved hook I 13 and grooved hook II 14 are both hook bodies, and the tails are both hook heels; the head of cutter 15 is a blade body 17, and the tail is a blade heel; the head of yarn needle 16 is a needle hook, and the tail is a needle hook heel, the positions of which can be selected according to usage requirements.

[0025] Example 3, referring to Figure 5 In the double-sided composite shearing machine described in Example 1, the groove hook I 13 and groove hook II 14 are both fixed together by three secondary groove hooks 18 in the thickness direction. The tail of each of the three secondary groove hooks 18 has the hook heel. The heads of the secondary groove hooks 18 located on both sides have the hook body, while the head of the secondary groove hook 18 located in the middle does not have the hook body, so that a groove hook gap is formed between the heads of the secondary groove hooks 18 located on both sides.

[0026] In Example 3, both the groove hook I 13 and the groove hook II 14 are formed by stacking and welding three secondary groove hooks 18 together along the thickness direction. The tails of the three secondary groove hooks 18 are each equipped with a hook heel for use with the triangular track for driving. The heads of the secondary groove hooks 18 on both sides are equipped with hook bodies for clamping the loops of wool. The head of the secondary groove hook 18 in the middle is not equipped with a hook body, thus forming a groove hook gap between the hook bodies on both sides. This groove hook gap provides a passage for the blade body 17 of the cutter 15 to pass through, enabling the cutter 15 to accurately cut the loops of wool clamped between the hook bodies on both sides, while ensuring the overall structural strength and rigidity of the groove hook and extending its service life.

[0027] Example 4: In the double-sided composite shearing machine described in Example 1, among the three secondary groove hooks 18 constituting groove hook I 13 or groove hook II 14, the length of the middle secondary groove hook 18 is between one-third and two-thirds of the length of the secondary groove hooks 18 on both sides. The specific value can be selected according to the usage requirements.

[0028] Example 5, a double-sided composite cut pile machine as described in Example 1, wherein the groove hook needle assembly triangle 12 includes a groove hook track section triangle 19 for guiding the hook heel on groove hook I 13, a groove hook track section triangle 20 for guiding the hook heel on groove hook II 14, a cutter track triangle 11 for guiding the cutter heel on cutter 15, and a face yarn needle track triangle 21 for guiding the needle hook heel on face yarn needle 16.

[0029] Example 6, refer to Figure 6-8 In the double-sided composite shearing machine described in Example 1, the settling plates 7 are a pair, and the push heads 10 on the pair of settling plates 7 face the same direction; the settling plate triangle 8 has two tracks for the heels on the settling plates 7 to move and guide.

[0030] Example 7, a weaving method using any one of Examples 1-6 of a double-sided composite cut pile machine, the steps of which are as follows: Step (1), when the upper needle cylinder 2, the middle needle cylinder 3 and the lower needle cylinder 4 rotate synchronously, the bottom yarn needle 5 set in the upper needle cylinder 2, the sinker 7 set in the middle needle cylinder 3 and the grooved hook needle assembly set in the lower needle cylinder 4 are rotated circumferentially to the corresponding working areas; Step (2), the heel of the bottom yarn needle 5 moves along the bottom yarn needle groove under the guidance of the track of the bottom yarn needle triangle 6, the bottom yarn needle 5 extends and hooks the bottom yarn, and then the bottom yarn needle 5 retracts under the action of the bottom yarn needle triangle 6, weaving the bottom yarn into a base fabric structure; Step (3), during the rotation of the lower needle cylinder 4, the heel of the hook needle of the face yarn needle 16 in the grooved hook needle assembly moves along the needle groove of the grooved hook needle assembly under the guidance of the face yarn needle track triangle 21, the face yarn needle 16 extends and hooks the face yarn, and then the face yarn needle 16 continues to move under the action of the face yarn needle track triangle 21. The yarn is pulled into a loop of predetermined height; in step (4), while the yarn needle 16 forms a loop, the heel of the groove hook I 13 in the groove hook needle assembly moves along the needle groove of the groove hook needle assembly under the guidance of the first section of the groove hook track triangle 19, and the groove hook I 13 extends and its head hook body approaches the loop formed by the yarn needle 16; the heel of the groove hook II 14 moves along the needle groove of the groove hook needle assembly under the guidance of the second section of the groove hook track triangle 20, and the groove hook II 14 extends and its head hook body is positioned opposite to the hook body of the groove hook I 13, and the two together clamp and position the loop; the groove hook gap formed between the head hook bodies of the groove hook I 13 and the groove hook II 14 corresponds to the position of the loop; the timing and height of the extension of the groove hook I 13 and the groove hook II 14 are controlled by the track curves of the first section of the groove hook track triangle 19 and the second section of the groove hook track triangle 20 respectively, so that the height difference formed by the hook bodies of the groove hook I 13 and the groove hook II 14 when clamping the loop is less than 0.2 mm, to ensure the stability of the loop positioning; Step (5), after the loop is clamped and positioned by the groove hook I 13 and groove hook II 14, the heel of the cutter 15 moves along the needle groove of the groove hook needle assembly under the guidance of the cutter track triangle 11, the cutter 15 extends and the blade 17 of its head passes through the groove hook gap between the groove hook I 13 and groove hook II 14, cutting off the loop clamped between the groove hook I 13 and groove hook II 14 to form fluff; Step (6), after the cutter 15 completes the cutting of the loop, the heel of the sinker 7 on the middle needle cylinder 3 is in the sinker triangle Guided by 8, it moves along the sinker groove, the sinker 7 extends, and the pusher head 10 on the sinker 7 pushes the cut hair out from the groove of the hook assembly of the lower syringe 4 and pushes it into the internal space of the lower syringe 4; in step (7), during the process of the sinker 7 pushing the hair into the lower syringe 4, since the maximum width of the head of the two secondary sinker 9 is greater than the width of the tail of the two secondary sinker 9, the two side walls of the head of the sinker are tightly attached to the inner side wall of the middle syringe 3 under the continuous action of the sinker triangle 8, so that the pusher gap 11 produces a small elastic deformation, from The fluff is completely pushed into the lower syringe 4 to prevent it from spreading out or getting into the yarn surface. When the two sides of the head of the sinker are pressed against the inner side of the middle syringe 3, the deformation causes the pusher head 10 to exert a continuous pushing force on the fluff until the fluff is completely inside the lower syringe 4. In step (8), after the pusher is completed, the heel of the sinker 7 retracts and resets along the sinker groove under the continued guidance of the sinker triangle 8. At the same time, the heel of the groove hook I 13 retracts and resets under the guidance of the first section of the groove hook track triangle 19, and the heel of the groove hook II 14 retracts and resets under the guidance of the second section of the groove hook track triangle 20. The cutter 15 retracts and resets under the guidance of the cutter track triangle 11, and the hook heel of the yarn needle 16 retracts and resets under the guidance of the yarn needle track triangle 21; step (9), repeat steps (2) to (8). With the continuous rotation of the upper needle cylinder 2, middle needle cylinder 3 and lower needle cylinder 4, the bottom yarn needle 5, sinker 7 and groove hook needle assembly circulate under the guidance of each triangle track. The base fabric structure woven in the upper needle cylinder 2 and the pile formed in the lower needle cylinder 4 are combined to form a double-sided composite pile fabric with pile structure on both sides.

Claims

1. A double-sided composite shearing machine, comprising a frame, characterized in that: The frame has an upper syringe, a middle syringe, and a lower syringe; The upper cylinder is provided with a bottom yarn needle, a bottom yarn needle groove for placing the bottom yarn needle, and a bottom yarn needle triangle for driving the bottom yarn needle to move. The middle syringe is equipped with a settling plate, a settling plate groove for placing the settling plate, and a settling plate triangle for driving the settling plate in the settling plate groove to move. The settling plate pushes the cut hair into the lower syringe. The lower syringe is provided with a grooved hook needle assembly, a grooved hook needle assembly needle groove for placing the grooved hook needle assembly, and a grooved hook needle assembly triangle for driving the grooved hook needle assembly to move.

2. The double-sided composite shearing machine according to claim 1, characterized in that: The aforementioned grooved hook needle assembly triangle includes grooved hook I, grooved hook II, a cutter, and a yarn needle; Both the groove hook I and the groove hook II have a hook body at the head and a hook heel at the tail. The cutting tool has a blade body at the head and a blade heel at the tail. The head of the veil needle has a hook, and the tail has a hook heel.

3. The double-sided composite shearing machine according to claim 1, characterized in that: Both the groove hook I and groove hook II are made of three secondary groove hooks fixed together in the thickness direction. The tail of each of the three secondary groove hooks has the hook heel. The heads of the secondary groove hooks on both sides have the hook body, while the head of the secondary groove hook in the middle does not have the hook body, so that a groove hook gap is formed between the heads of the secondary groove hooks on both sides.

4. A double-sided composite shearing machine according to claim 1, characterized in that: Of the three secondary slot hooks that make up slot hook I or slot hook II, the length of the middle secondary slot hook is between one-third and two-thirds of the length of the secondary slot hooks on both sides.

5. A double-sided composite shearing machine according to claim 1, characterized in that: The grooved hook needle assembly triangle includes a grooved hook track segment one triangle that guides the hook heel on grooved hook I, a grooved hook track segment two triangle that guides the hook heel on grooved hook II, a cutter track triangle that guides the cutter heel on the cutter, and a yarn needle track triangle that guides the needle hook heel on the yarn needle.

6. A double-sided composite shearing machine according to claim 1, characterized in that: The settling plates are a pair; The settling plate triangle has two tracks for guiding the movement of the plate heels on the settling plate.

7. A weaving method using a double-sided composite cut pile machine as described in any one of claims 1-6, characterized in that, The steps are as follows: Step (1): When the upper needle cylinder, middle needle cylinder and lower needle cylinder rotate synchronously, the bottom needle set in the upper needle cylinder, the sinker set in the middle needle cylinder and the grooved hook needle assembly set in the lower needle cylinder are rotated circumferentially to the corresponding working area. Step (2): The heel of the bottom yarn needle moves along the bottom yarn needle groove under the guidance of the bottom yarn needle triangle. The bottom yarn needle extends and hooks the bottom yarn. Then the bottom yarn needle retracts under the action of the bottom yarn needle triangle and weaves the bottom yarn into the base fabric structure. Step (3): During the rotation of the lower cylinder, the needle hook heel of the yarn needle in the groove hook needle assembly moves along the needle groove of the groove hook needle assembly under the guidance of the yarn needle track triangle. The yarn needle extends and hooks the yarn. Then the yarn needle continues to move under the action of the yarn needle track triangle, pulling the yarn into a loop of predetermined height. In step (4), while the yarn needle forms a loop, the heel of the groove hook I in the groove hook needle assembly moves along the needle groove of the groove hook needle assembly under the guidance of a section of the groove hook track. The groove hook I extends and its head hook body approaches the loop formed by the yarn needle. The heel of the groove hook II moves along the needle groove of the groove hook needle assembly under the guidance of a section of the groove hook track. The groove hook II extends and its head hook body is positioned opposite to the hook body of the groove hook I. The two together clamp and position the loop. The groove hook gap formed between the head hook bodies of the groove hook I and the groove hook II corresponds to the position of the loop. The timing and height of the extension of groove hook I and groove hook II are controlled by the track curves of the first and second triangular sections of the groove hook track, respectively, so that the height difference between the hook bodies of groove hook I and groove hook II when clamping the loop is less than 0.2 mm, thus ensuring the stability of the loop positioning. Step (5): After the loops are clamped and positioned by the groove hooks I and II, the heel of the cutter moves along the groove of the groove hook needle assembly under the guidance of the cutter track triangle. The cutter extends and its head passes through the groove hook gap between the groove hooks I and II, cutting the loops clamped between the groove hooks I and II to form plush. Step (6): After the cutter cuts the loops, the heel of the sinker on the middle syringe moves along the sinker groove under the guidance of the sinker triangle, and the sinker extends out to push the cut loops into the lower syringe. Step (7): After the push-down is completed, the heel of the sinker retracts and resets along the sinker groove under the continued guidance of the sinker triangle; at the same time, the heel of the groove hook I retracts and resets under the guidance of the first section of the groove hook track triangle, the heel of the groove hook II retracts and resets under the guidance of the second section of the groove hook track triangle, the heel of the cutter retracts and resets under the guidance of the cutter track triangle, and the heel of the yarn needle retracts and resets under the guidance of the yarn needle track triangle. Step (8): Repeat steps (2) to (7). As the upper, middle and lower cylinders rotate continuously, the bottom yarn needle, sinker and groove hook needle assembly circulate under the guidance of each triangular track. The base fabric structure woven in the upper cylinder and the pile formed in the lower cylinder are combined to form a double-sided composite pile fabric with pile structure on both sides.

Images