Needle selection reset mechanism of jacquard machine

Abstract

The invention provides a needle selection reset mechanism of a jacquard machine, and relates to the technical field of textile machinery, the needle selection reset mechanism comprises a supporting table, two connecting rods are arranged above the supporting table, the upper ends of the two connecting rods are both fixedly connected with connecting blocks, a needle selector is fixedly connected in the supporting table through screws, and a tissue needle is arranged in the needle selector; a controller is arranged on the front surface of the supporting table, L-shaped blocks are fixedly connected to the rear surfaces of the two connecting rods, electric signals are sent out through the controller according to preset pattern data, the needle selector receives the signals, a set of electromagnetic blocks arranged in the needle selector generate a magnetic field, and the tissue needles are made of magnetic materials. A tissue needle generates displacement under the action of magnetic force, the displacement enables the acting part of a knitting needle to change, so that whether the knitting needle participates in knitting or not is determined, and when the knitting needle ascends under the action of electromagnetic force, the knitting needle can be interwoven with warp for knitting.

Description

Technical Field

[0001] The invention belongs to the technical field of textile machinery, and more specifically, particularly relates to a needle selection and resetting mechanism of a jacquard machine. Background Art

[0002] Jacquard machine is a textile machine, which is mainly used to weave complex and diverse patterns on fabrics. It precisely controls the knitting needles so that different knitting needles participate in or do not participate in the weaving work at different times, thereby interweaving the warp and weft yarns to form a fabric with a specific pattern. Jacquard machine is widely used in the production of various fabrics that require complex patterns, such as silk, carpets, and decorative fabrics. The needle selection and reset mechanism is a key component of the jacquard machine. Its main function is to select specific knitting needles from a large number of knitting needles to participate in the weaving work, so as to achieve the weaving of a specific pattern.

[0003] The existing jacquard machine needle selection and reset mechanism still has the following disadvantages:

[0004] 1. Most jacquard machines use mechanical cams and other methods to select needles, but the mechanical parts will wear out during long-term operation. The profile of the cam will change slightly due to continuous friction with the needle selection components, and the connection parts of the connecting rod mechanism will also become loose. These changes in mechanical structure will lead to deviations in the needle selection position, and as the use time increases, the errors will gradually accumulate, reducing the accuracy of needle selection, thereby affecting the accuracy and clarity of the fabric pattern.

[0005] 2. When weaving wide fabrics, the force applied to the edge and middle needles may be different. If the clamping structure cannot be flexibly adjusted to balance the tension, the weaving density of the fabric at different positions will be inconsistent, affecting the quality and appearance of the fabric.

[0006] 3. During the fabric processing process, it needs to be moved to a special cutting device for cutting, and then the next processing operation can be carried out. This series of operations increases the complexity and tediousness of the workflow, reduces production efficiency, and is not conducive to achieving efficient mass production.

[0007] Therefore, in view of this, the existing structure and defects are studied and improved, and a needle selection and reset mechanism for a jacquard machine is provided, in order to achieve a more practical purpose. Summary of the invention

[0008] In order to solve the above technical problems, the present invention provides a needle selection and resetting mechanism for a jacquard machine to solve the above problems.

[0009] A needle selection and reset mechanism of a jacquard machine comprises a support platform, two connecting rods are arranged above the support platform, the upper ends of the two connecting rods are fixedly connected to a connecting block, a needle selector is fixedly connected to the support platform by screws, a tissue needle is arranged in the needle selector, a controller is arranged on the front surface of the support platform, the rear surfaces of the two connecting rods are fixedly connected to an L-shaped block, the rear surface of the support platform is fixedly connected to a connecting plate, the front surface of the connecting plate is rotatably connected to a gear, a fixing plate is arranged on the upper surface of the needle selector, each of the knitting needle surfaces is fixedly connected to a disc, the upper surface of each of the discs is fixedly connected to a spring, and each Each of the springs is fixedly connected to the fixed plate, a group of electromagnetic blocks is arranged in the needle selector, two limit blocks are fixedly connected to the upper surfaces of the two connecting blocks, two movable plates are arranged between the two pairs of limit blocks, the opposite surfaces of the two movable plates are fixedly connected to fixed rods, the opposite surfaces of the two connecting blocks are fixedly connected to central through tubes, the opposite surfaces of the two central through tubes are fixedly connected to extension plates, the upper surfaces of the two extension plates are fixedly connected to bottom knives, the lower ends of the two central through tubes are movably connected to collecting boxes, the left and right sides of the connecting plate are fixedly connected to fixed blocks, and the two fixed blocks are movably connected to the two L-shaped blocks respectively.

[0010] Preferably, a motor is fixedly mounted on the rear surface of the connecting plate, the motor output shaft is fixedly connected to the gear, a group of two slots are provided on the opposite surfaces of the two L-shaped blocks, the two groups of two slots are movably engaged with the gear, two pairs of blocks are fixedly connected to the upper surface of the needle selector, the two pairs of blocks are fixedly connected to the fixed plate, and the fixed plate is movably engaged with a tissue needle.

[0011] Preferably, a group of protective rings are fixedly connected to the inner wall of the needle selector, a group of the electromagnetic blocks are arranged in a group of protective rings, a group of the protective rings are respectively movably connected to a tissue needle, the lower surfaces of the two connecting rods are fixedly connected to sliders, the upper surface of the support platform is provided with two card slots 1, the two card slots 1 are respectively movably connected to the two sliders, the upper surfaces of the two connecting blocks are fixedly installed with cylinders, and the two cylinder output shafts are fixedly connected with cutting knives.

[0012] Preferably, the back sides of the two fixed rods are fixedly connected with clamping strips, the back sides of the two clamping strips are rotatably connected with a group of clamping wheels, the lower surfaces of the two movable plates are fixedly connected with two springs 2, and the two pairs of springs 2 are fixedly connected with two connecting blocks respectively.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In the present invention, the electromagnetic drive is less affected by environmental factors such as temperature and humidity. Under different working environments, the electromagnetic needle selection can maintain relatively stable performance and ensure the accuracy and reliability of needle selection. In addition, during the weaving process, the knitting needles need to overcome the tension of the yarn and other forces. The electromagnetic drive needle selection can provide sufficient driving force to ensure the smooth completion of the needle selection action. It can work stably even when the yarn tension is large.

[0015] In the present invention, the motor output shaft will drive the gear fixed to it to rotate during the rotation process, and the gear will drive the two L-shaped blocks clamped to it to move during the rotation process. The two L-shaped blocks will drive the connecting rods fixed to them to move during the relative movement process. The two connecting rods are movably connected to the support platform through the sliders fixed thereon. During the movement of the two connecting rods, they will drive the connecting blocks fixed thereon to move together. At this time, the two connecting rods can be flexibly adjusted according to the size of the fabric, thereby ensuring the stability of the fabric clamping.

[0016] In the present invention, a set of rotating clamping wheels is designed to ensure that clamping will not affect the movement of the fabric. The two sets of clamping wheels can control the tension and position of the fabric during the weaving process. Regardless of the length, width or thickness direction of the fabric, the two sets of clamping wheels can adjust the clamping position to avoid problems such as excessive stretching, shrinkage or deformation of the fabric, so that the fabric meets the designed size requirements.

[0017] In the present invention, the edges of the fabric are made clean and tidy by cutting, which not only improves the appearance of the fabric, but also reduces subsequent processing problems that may be caused by burr defects. The burrs after cutting will fall into the collection box below through the central tube for collection. The collection box is movably connected to the central tube through the groove opened thereon. This structure allows the edge of the fabric to be cut directly on the production line without transferring the fabric to other equipment for separate processing, reducing production links and production time, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the connecting rod structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the needle selector of the present invention;

[0021] Figure 4 It is a schematic diagram of the knitting needle structure of the present invention;

[0022] Figure 5 It is a schematic diagram of the L-shaped block structure of the present invention;

[0023] Figure 6It is a schematic diagram of the connection block structure of the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the movable plate of the present invention;

[0025] Figure 8 It is a schematic diagram of the structure of the cutting knife of the present invention.

[0026] In the figure, the corresponding relationship between the component names and the figure numbers is: 1. Support table; 2. Controller; 3. Needle selector; 4. Fixed plate; 5. Connecting rod; 6. Connecting block; 7. Knitting needle; 8. L-shaped block; 9. Slot 1; 10. Connecting plate; 11. Motor; 12. Spring 1; 13. Disc; 14. Block; 15. Protective ring; 16. Electromagnetic block; 17. Gear; 18. Fixed block; 19. Slot 2; 20. Cylinder; 21. Movable plate; 22. Collecting box; 23. Slider; 24. Fixed rod; 25. Clamping strip; 26. Spring 2; 28. Clamping wheel; 29. ​​Middle tube; 30. Limit block; 31. Cutting knife; 32. Bottom knife; 33. Extension plate. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0028] See also Figure 1 - Figure 8The present invention provides a needle selection and resetting mechanism of a jacquard machine, comprising a support platform 1, two connecting rods 5 are arranged above the support platform 1, the upper ends of the two connecting rods 5 are fixedly connected with connecting blocks 6, a needle selector 3 is fixedly connected to the support platform 1 by screws, a tissue needle 7 is arranged in the needle selector 3, a controller 2 is arranged on the front surface of the support platform 1, the rear surfaces of the two connecting rods 5 are fixedly connected with L-shaped blocks 8, the rear surface of the support platform 1 is fixedly connected with a connecting plate 10, the front surface of the connecting plate 10 is rotatably connected with a gear 17, a fixed plate 4 is arranged on the upper surface of the needle selector 3, each knitting needle 7 surface is fixedly connected with a disc 13, the upper surface of each disc 13 is fixedly connected with a spring 12, each spring 12 is fixedly connected to the fixed plate 4, a group of electromagnetic blocks 16 is arranged in the needle selector 3, the upper surfaces of the two connecting blocks 6 are fixedly connected with two limit blocks 30, two movable plates 21 are arranged between the two pairs of limit blocks 30, the opposite surfaces of the two movable plates 21 are fixedly connected with fixed rods 24, and the two The opposite surfaces of the connecting block 6 are fixedly connected with a central through tube 29, and the opposite surfaces of the two central through tubes 29 are fixedly connected with an extension plate 33. The upper surfaces of the two extension plates 33 are fixedly connected with a bottom knife 32. The lower ends of the two central through tubes 29 are movably connected with a collecting box 22. The left and right sides of the connecting plate 10 are fixedly connected with a fixed block 18, and the two fixed blocks 18 are movably connected with the two L-shaped blocks 8 respectively. Different knitting needles 7 are interwoven with corresponding warp yarns at different times according to the requirements of the pattern, and finally complex and diverse webbing patterns are woven. Compared with some other driving methods, electromagnetic drive is less affected by environmental factors such as temperature and humidity. Under different working environments, electromagnetic needle selection can maintain relatively stable performance to ensure the accuracy and reliability of needle selection. In addition, during the weaving process, the knitting needle 7 needs to overcome the tension of the yarn and other forces. The electromagnetic drive needle selection can provide sufficient driving force to ensure the smooth completion of the needle selection action, and can work stably even when the yarn tension is large.

[0029] A motor 11 is fixedly installed on the rear surface of the connecting plate 10, and the output shaft of the motor 11 is fixedly connected to the gear 17. A group of card slots 19 are provided on the opposite surfaces of the two L-shaped blocks 8, and the two groups of card slots 19 are movably connected to the gear 17. Two pairs of card blocks 14 are fixedly connected to the upper surface of the needle selector 3, and the two pairs of card blocks 14 are fixedly connected to the fixed plate 4, and the fixed plate 4 is movably connected to a tissue needle 7. When weaving, the left and right ends of the fabric are respectively clamped in the two connecting blocks 6 for fixing. First, the motor 11 is started by the controller 2. The output shaft of the motor 11 will drive the gear 17 fixed thereto to rotate during the rotation process. The gear 17 will drive the two L-shaped blocks 8 connected thereto to move during the rotation process. The two L-shaped blocks 8 will drive the connecting rods 5 fixed thereto to move together during the relative movement process. The two connecting rods 5 are movably connected to the support platform 1 through the sliders 23 fixed thereon. The two connecting rods 5 will drive the connecting blocks 6 fixed thereon to move together during the movement process. At this time, it can be flexibly adjusted according to the size of the fabric, thereby ensuring the stability of the fabric clamping.

[0030] A group of protective rings 15 are fixedly connected to the inner wall of the needle selector 3, a group of electromagnetic blocks 16 are arranged in the group of protective rings 15, a group of protective rings 15 are respectively movably connected with a tissue needle 7, the lower surfaces of the two connecting rods 5 are fixedly connected with sliders 23, the upper surface of the support platform 1 is provided with two card slots 9, the two card slots 9 are respectively movably connected with the two sliders 23, the upper surfaces of the two connecting blocks 6 are fixedly installed with cylinders 20, and the output shafts of the two cylinders 20 are fixedly connected with cutting knives 31, and the movable plate 21 and the clamping strip 25 fixed thereto are driven to move together by pushing the fixed rod 24 upward, and the movable plate 21 pulls up the two during the upward movement. Spring 26, the clamping strip 25 will drive a group of clamping wheels 28 rotatably arranged thereon to move. At this time, the fabric is placed between a group of clamping wheels 28 and the connecting block 6, and the elastic force of the two springs 26 drives a group of clamping wheels 28 to reset. The design of a group of clamping wheels 28 rotating can ensure clamping without affecting the movement of the fabric. The two groups of clamping wheels 28 can control the tension and position of the fabric during the weaving process. Regardless of the length, width or thickness direction of the fabric, the two groups of clamping wheels 28 can adjust the clamping position to avoid problems such as excessive stretching, shrinkage or deformation of the fabric, so that the fabric meets the designed size requirements.

[0031] The back sides of the two fixed rods 24 are fixedly connected with clamping strips 25, and the back sides of the two clamping strips 25 are rotatably connected with a group of clamping wheels 28. The lower surfaces of the two movable plates 21 are fixedly connected with two springs 26, and the two pairs of springs 26 are fixedly connected with the two connecting blocks 6 respectively. In the weaving process, some defects such as burrs and loose yarns often occur on the edges of the fabric. When the edges on both sides of the fabric need to be cut, the output shaft of the cylinder 20 is started to drive the cutting knife 31 fixed thereto to move together. The cutting knife 31 cooperates with the bottom knife 32 to cut the fabric during the downward movement. The cutting makes the edges of the fabric clean and tidy, which not only improves the appearance of the fabric, but also reduces the subsequent processing problems that may be caused by burrs. The burrs after cutting will fall into the collecting box 22 below through the middle tube 29 for collection. The collecting box 22 is movably connected to the middle tube 29 through the groove opened thereon. This structure enables the edge cutting of the fabric to be performed directly on the production line without transferring the fabric to other equipment for separate processing, thereby reducing the production links and production time and improving the production efficiency.

[0032] Working principle:

[0033] The first step is that during use, the controller 2 sends an electrical signal according to the preset pattern data, the needle selector 3 receives the signal, and a group of electromagnetic blocks 16 arranged therein generate a magnetic field. A tissue needle 7 is made of magnetic material. Under the action of the magnetic field of a group of electromagnetic blocks 16, a tissue needle 7 is displaced by the magnetic force. This displacement changes the action position of the knitting needle 7, thereby determining whether the knitting needle 7 participates in weaving. When the knitting needle 7 is raised by the electromagnetic force, it can be interwoven with the warp yarn for weaving. Otherwise, the knitting needle 7 does not participate in weaving, thereby forming different parts in the pattern. After completing the needle selection action, it is necessary to return to the initial position to prepare for the next needle selection. During the movement of the knitting needle 7, the spring 12 connected thereto is compressed. When the needle selection action is completed, the elastic restoring force of the spring 12 will cause the knitting needle 7 to move in the opposite direction and return to its initial position. During the descent, the knitting needle 7 will move downward with the hooked warp yarn. At the same time, auxiliary components such as the sinker on the loom will work together. , the sinker will press down the old coil that has been formed to prevent it from moving with the knitting needle 7. When the knitting needle 7 drops, the hooked warp yarn will bypass the needle tongue of the knitting needle 7 and form a new coil in the needle hook. The new coil is intertwined with the old coil previously pressed by the sinker. As the knitting needle 7 continues to move up and down, the new warp yarn is constantly hooked and intertwined, thereby forming a continuous weaving structure. In this process, different knitting needles 7 are intertwined with the corresponding warp yarns at different times according to the requirements of the pattern, and finally complex and diverse ribbon patterns are woven. Compared with some other driving methods, electromagnetic drive is less affected by environmental factors such as temperature and humidity. Under different working environments, electromagnetic needle selection can maintain relatively stable performance and ensure the accuracy and reliability of needle selection. In addition, during the weaving process, the knitting needle 7 needs to overcome the forces such as the tension of the yarn. The electromagnetic drive needle selection can provide sufficient driving force to ensure the smooth completion of the needle selection action, and can work stably even when the yarn tension is large.

[0034] In the second step, when weaving, the left and right ends of the fabric are clamped in the two connecting blocks 6 for fixing. First, the motor 11 is started by the controller 2. The output shaft of the motor 11 will drive the gear 17 fixed thereto to rotate during the rotation process. The gear 17 will drive the two L-shaped blocks 8 connected thereto to move during the rotation process. The two L-shaped blocks 8 will drive the connecting rods 5 fixed thereto to move during the relative movement. The two connecting rods 5 are movably connected to the support platform 1 through the sliders 23 fixed thereon. The two connecting rods 5 will drive the connecting blocks 6 fixed thereon to move during the movement. At this time, it can be flexibly adjusted according to the size of the fabric to ensure the stability of the fabric clamping. The fixing rod 24 is pushed upward to drive the fixing rod 24 to move. The fixed movable plate 21 moves together with the clamping bar 25. The movable plate 21 pulls up the two springs 26 during the upward movement, and the clamping bar 25 drives a group of clamping wheels 28 rotatably arranged thereon to move. At this time, the fabric is placed between a group of clamping wheels 28 and the connecting block 6, and the elastic force of the two springs 26 drives a group of clamping wheels 28 to reset. The design of a group of clamping wheels 28 rotating can ensure clamping without affecting the movement of the fabric. The two groups of clamping wheels 28 can control the tension and position of the fabric during the weaving process. Regardless of the length, width or thickness of the fabric, the two groups of clamping wheels 28 can adjust the clamping position to avoid problems such as excessive stretching, contraction or deformation of the fabric, so that the fabric meets the designed size requirements.

[0035] The third step is that during the weaving process, some defects such as burrs and loose yarns often occur on the edges of the fabric. When the edges on both sides of the fabric need to be cut, the cylinder 20 is started and its output shaft will drive the cutting knife 31 fixed thereto to move together. The cutting knife 31 cooperates with the bottom knife 32 to cut the fabric during the downward movement. The cutting makes the edges of the fabric clean and tidy, which not only improves the appearance of the fabric, but also reduces the subsequent processing problems that may be caused by burrs. The burrs after cutting will fall into the collection box 22 below through the middle tube 29 for collection. The collection box 22 is movably connected to the middle tube 29 through the groove opened thereon. This structure allows the edge cutting of the fabric to be performed directly on the production line without transferring the fabric to other equipment for separate processing, reducing production links and production time, and improving production efficiency.

[0036] The examples of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and to design various embodiments with various modifications suitable for specific uses.

Claims

1. A needle selection and resetting mechanism for a jacquard machine, comprising a support platform (1), characterized in that: Two connecting rods (5) are arranged above the support platform (1), and the upper ends of the two connecting rods (5) are fixedly connected to connecting blocks (6). A needle selector (3) is fixedly connected to the support platform (1) by screws, and a tissue needle (7) is arranged in the needle selector (3). A controller (2) is arranged on the front surface of the support platform (1), and the rear surfaces of the two connecting rods (5) are fixedly connected to L-shaped blocks (8). A connecting plate (10) is fixedly connected to the rear surface of the support platform (1), and a gear (17) is rotatably connected to the front surface of the connecting plate (10). A fixing plate (4) is arranged on the upper surface of the needle selector (3); The surface of each knitting needle (7) is fixedly connected to a disk (13), the upper surface of each disk (13) is fixedly connected to a spring (12), each spring (12) is fixedly connected to a fixed plate (4), a group of electromagnetic blocks (16) are arranged in the needle selector (3), the upper surfaces of the two connecting blocks (6) are fixedly connected to two limit blocks (30), two movable plates (21) are arranged between the two pairs of limit blocks (30), the opposite surfaces of the two movable plates (21) are fixedly connected to a fixed rod (24), the opposite surfaces of the two connecting blocks (6) are fixedly connected to a central tube (29), the opposite surfaces of the two central tubes (29) are fixedly connected to an extension plate (33), the upper surfaces of the two extension plates (33) are fixedly connected to a bottom knife (32), and the lower ends of the two central tubes (29) are movably connected to a collecting box (22).

2. A needle selection and reset mechanism for a jacquard machine as claimed in claim 1, characterized in that: The left and right sides of the connecting plate (10) are both fixedly connected with fixing blocks (18); The two fixed blocks (18) are movably connected to the two L-shaped blocks (8) respectively.

3. A needle selection and resetting mechanism for a jacquard machine as claimed in claim 1, characterized in that: A motor (11) is fixedly mounted on the rear surface of the connecting plate (10); Wherein, the output shaft of the motor (11) is fixedly connected to the gear (17).

4. A needle selection and resetting mechanism for a jacquard machine as claimed in claim 1, characterized in that: The two L-shaped blocks (8) are each provided with a set of second slots (19) on the opposite sides thereof; Wherein, the two groups of the second clamping grooves (19) are both movably clamped with the gear (17).

5. The needle selection and resetting mechanism of a jacquard machine as claimed in claim 1, characterized in that: Two pairs of clamping blocks (14) are fixedly connected to the upper surface of the needle selector (3), and the two pairs of clamping blocks (14) are fixedly connected to the fixing plate (4); Wherein, the fixing plate (4) is movably engaged with a tissue needle (7).

6. A needle selection and resetting mechanism for a jacquard machine as claimed in claim 1, characterized in that: A group of protective rings (15) are fixedly connected to the inner wall of the needle selector (3), and a group of electromagnetic blocks (16) are arranged in the group of protective rings (15); Wherein, a group of the protective rings (15) are respectively movably connected to a tissue needle (7).

7. A needle selection and resetting mechanism for a jacquard machine as claimed in claim 1, characterized in that: The lower surfaces of the two connecting rods (5) are fixedly connected with a slider (23), and the upper surface of the support platform (1) is provided with two card slots (9); The two card slots (9) are movably connected to the two sliders (23) respectively.

8. The needle selection and resetting mechanism of a jacquard machine as claimed in claim 1, characterized in that: A cylinder (20) is fixedly mounted on the upper surfaces of the two connecting blocks (6); Wherein, the output shafts of the two cylinders (20) are both fixedly connected with a cutting knife (31).

9. The needle selection and resetting mechanism of a jacquard machine as claimed in claim 1, characterized in that: The back surfaces of the two fixing rods (24) are fixedly connected with clamping strips (25); Wherein, the two clamping bars (25) are rotatably connected to a group of clamping wheels (28) on the back sides thereof.

10. The needle selection and resetting mechanism of a jacquard machine as claimed in claim 1, characterized in that: Two springs (26) are fixedly connected to the lower surfaces of the two movable plates (21); Wherein, the two pairs of springs (26) are fixedly connected to the two connecting blocks (6) respectively.

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