Adjustment mechanism and installation method of circular knitting machine needle cylinder and cam

Abstract

The present invention discloses an adjustment mechanism and installation method for the needle cylinder and cam of a circular knitting machine, comprising a bottom ring seat, a needle cylinder and a cam, the bottom ring seat being located on the outside of the needle cylinder, a plurality of slots being provided on the outside of the needle cylinder, a knitting needle being installed in the slot, a needle butt being provided in the middle of the knitting needle, and a bayonet being provided at the lower end of the knitting needle, a positioning ring being provided at the lower end of the needle cylinder for preventing the knitting needle from downwardly separating from the needle cylinder, and a fixing ring being provided on the outside of the needle cylinder for preventing the knitting needle from falling, a plurality of fixing components for installing the cams being provided on the bottom ring seat, the fixing components comprising a fixing seat, a movable seat, a movable bolt and an adjusting nut, the present invention designs the cams into an upper cam block and a lower cam block and improves the knitting needle structure, so that when the knitting needle is installed on the needle cylinder, there is no need to adjust the relative positions of the needle butt and the traditional cam needle groove one by one, thereby greatly simplifying the installation difficulty when replacing different cams.

Description

Technical Field

[0001] The invention discloses an adjusting mechanism and an installation method for a circular knitting machine needle cylinder and a cam, and belongs to the technical field of knitting equipment. Background Art

[0002] The knitting machine in which the knitting needles are arranged on a circular needle cylinder and is used to produce cylindrical weft-knitted fabrics is referred to as a circular knitting machine. The core structure used for knitting in the circular knitting machine includes a needle cylinder, a knitting needle and a cam. The existing cams are all installed on a cam seat, and the cam has a needle groove for the sliding of the needle butt. Since the cam includes a needle raising cam, a return needle cam and a flat needle cam, the needle raising cam is used to hook the yarn when the needle is released, the return needle cam is used to close the needle into a loop for weaving, and the flat needle cam is used to keep the needle in a floating line or non-exiting state. The needle groove trajectories on different cams vary. In the state after the needle cylinder, the knitting needle and the cam are installed, the needle butt of the knitting needle is located in the needle groove. Since the needle groove of each cam is fixed, when installing the cam and the knitting needle, the height of the knitting needle needs to be adjusted one by one so that the needle butt is aligned with each position of the needle groove, and then the cam and the cam seat are fixed. Therefore, using this cam and needle installation method, especially each time after changing the cam of a different fabric structure, the position of the knitting needle needs to be readjusted, which increases the installation workload and is also more cumbersome in operation. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems in the prior art and to provide an adjustment mechanism and an installation method for a circular knitting machine needle cylinder and a cam.

[0004] The present invention achieves the above-mentioned purpose through the following technical solutions: a circular knitting machine needle cylinder and cam adjustment mechanism, comprising a bottom ring seat, a needle cylinder and a cam, characterized in that the bottom ring seat is located on the outside of the needle cylinder, a plurality of slots are provided on the outside of the needle cylinder, a knitting needle is installed in the slot, a needle butt is provided in the middle of the knitting needle, and a bayonet is provided at the lower end of the needle cylinder, a positioning ring is provided at the lower end of the needle cylinder for preventing the knitting needle from falling down from the needle cylinder, and a fixing ring is provided on the outside of the needle cylinder for preventing the knitting needle from falling, a plurality of fixing components for installing the cam are provided on the bottom ring seat, the fixing components include a fixed seat, a movable seat, a movable bolt and an adjusting nut, the fixed seat is a stepped structure, and a needle butt is provided in the middle of the fixed seat The cam is fixed on the movable seat, and the lower cam block has a lower guide surface that slides relative to the needle butt, and the lower cam block has a lower guide surface that slides relative to the lower end of the knitting needle, and a reset member is provided between the fixed seat and the movable seat.

[0005] Preferably, the reset member includes a spring and a guide rod, one end of the guide rod is fixed on the fixed seat, and the other end is slidably arranged with the movable seat, the spring is sleeved on the outside of the guide rod, and the two ends of the spring are respectively in contact with the fixed seat and the movable seat.

[0006] Preferably, a guide column is provided on the bottom ring seat, and a sliding groove for the guide column to slide is provided on the fixed seat, and the extension line of the center of the sliding groove passes through the center of the syringe.

[0007] Preferably, a mounting platform is provided on the movable seat, one side of the lower triangular block is in contact with the mounting platform, and a latch is provided between the lower triangular block and the movable seat, and the lower end of the knitting needle is provided with a rounded corner.

[0008] A method for installing a needle cylinder and a cam of a circular knitting machine comprises the following steps:

[0009] S1: Fix the needle cylinder with the positioning ring to the transmission gear of the circular knitting machine, then fix the bottom ring seat to the support frame of the circular knitting machine, and then insert all the knitting needles into the slots one by one, and push the knitting needles down to the lowest point so that the bayonet on the knitting needle contacts the positioning ring;

[0010] S2: Insert the guide rod through the spring into the movable seat, then pass the movable bolt through the movable seat and the fixed seat from bottom to top, adjust the nut connection, and keep the movable seat at the lowest position;

[0011] S3: Fix the upper triangle block of the needle casting cam, return stitch cam and flat needle cam on the fixed seat, and then fix the lower triangle block of the needle casting cam, return stitch cam and flat needle cam on the movable seat, then install the fixed seat on the guide column and push the fixed seat toward the center of the needle cylinder until the guide column cannot slide in the slide groove, so that the lower needle guide surface of the lower triangle block is directly below the knitting needle;

[0012] S4: Turn the adjusting nut clockwise. The movable bolt cannot rotate due to the restriction of the limit part and can only drive the movable seat and the lower triangular block to move upward. When the lower guide needle surface on the lower triangular block contacts the knitting needle, the knitting needle keeps moving synchronously with the lower triangular block until the movable seat moves to a preset height, so that when the knitting needle rotates with the needle cylinder, the movable range of the knitting needle is limited between the upper guide needle surface and the lower guide needle surface.

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

[0014] The traditional triangle structure is split into two independent upper triangle blocks and lower triangle blocks. When installing the knitting needle, the knitting needle is pushed to the lowest point along the slot. When the fixing seat is installed on the bottom ring seat, the fixing seat is pushed horizontally so that the lower needle guide surface on the lower triangle block moves to directly below the knitting needle. Then the height of the movable seat and the lower triangle block is adjusted upward so that the lower triangle block pushes the knitting needle upward. Since the heights to which the knitting needle is pushed by different lower needle guide surfaces are different, the movable range of the knitting needle is limited between the upper needle guide surface and the lower needle guide surface. In this way, when the knitting needle rotates with the needle cylinder, the lower needle guide surface allows the knitting needle to be ejected smoothly, and the upper needle guide surface allows the knitting needle to close the needle for knitting. Therefore, the design structure can simplify the installation of the knitting needle and the triangle while ensuring that the knitting needle forms a loop, and the operation is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the cam and needle groove in the prior art;

[0016] Figure 2 This is a schematic structural diagram of an adjustment mechanism for a circular knitting machine needle cylinder and a cam in the present invention;

[0017] Figure 3 Schematic diagram of the structure of the needle cylinder, upper triangular block and lower triangular block in the present invention;

[0018] Figure 4 It is a structural schematic diagram of the fixed seat, movable seat and knitting needles in the present invention;

[0019] Figure 5 It is a schematic structural diagram of the fixing assembly, the upper triangular block and the lower triangular block in the present invention;

[0020] Figure 6Schematic diagram of the structure of the knitting needle in the present invention;

[0021] Figure 7 It is a structural schematic diagram of the movable bolt in the present invention;

[0022] Figure numerals: 1, needle cylinder; 2, knitting needle; 3, pressure ring; 4, fixed seat; 5, bottom ring seat; 6, upper triangular block; 7, adjusting nut; 8, fixed ring; 9, movable bolt; 10, movable seat; 11, lower triangular block; 12, guide column; 13, slide groove; 14, mounting platform; 15, upper guide needle surface; 16, guide rod; 17, spring; 18, latch; 19, lower guide needle surface; 20, bayonet; 21, needle butt; 22, limit part; 23, positioning ring. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figure 1-Figure 7 As shown, a circular knitting machine needle cylinder and cam adjustment mechanism includes a bottom ring seat 5, a needle cylinder 1 and a cam, characterized in that the bottom ring seat 5 is located on the outside of the needle cylinder 1, and a plurality of slots are provided on the outside of the needle cylinder 1, in which a knitting needle 2 is installed, a needle butt 21 is provided in the middle of the knitting needle 2, and a bayonet 20 is provided at the lower end of the needle cylinder 1, and a positioning ring 23 is provided at the lower end of the needle cylinder 1 for preventing the knitting needle 2 from downwardly escaping from the needle cylinder 1, and a fixing ring 8 is provided on the outside of the needle cylinder 1 for preventing the knitting needle 2 from falling, a plurality of fixing components for installing the cam are provided on the bottom ring seat 5, and the fixing components include a fixed seat 4, a movable seat 10, a movable bolt 9 and an adjusting nut 7, the fixed seat 4 is a stepped structure, and a hollow is provided in the middle of the fixed seat 4, and a bottom ring seat 5 is provided There is a pressure ring 3 for installing the fixed seat 4, and the movable seat 10 is installed in the hollow part. One end of the movable bolt 9 passes through the movable seat 10 and the fixed seat 4 and is threadedly connected to the adjusting nut 7. The movable bolt 9 has a limiting portion 22 on which the movable seat 10 is slidably arranged. The triangle includes a needle raising triangle, a flat needle triangle and a return needle triangle. The needle raising triangle, the flat needle triangle and the return needle triangle are all composed of an upper triangle block 6 and a lower triangle block 11. The upper triangle block 6 is fixed to the side of the fixed seat 4 close to the needle cylinder 1, and the upper triangle block 6 has an upper needle guide surface 15 that slides relative to the needle butt 21. The lower triangle block 11 is fixed on the movable seat 10, and the lower triangle block 11 has a lower needle guide surface 19 that slides relative to the lower end of the knitting needle 2. A reset member is provided between the fixed seat 4 and the movable seat 10.

[0025] The reset member includes a spring 17 and a guide rod 16. One end of the guide rod 16 is fixed on the fixed seat 4, and the other end is slidably set with the movable seat 10. The spring 17 is sleeved on the outside of the guide rod 16, and the two ends of the spring 17 are respectively in contact with the fixed seat 4 and the movable seat 10. After the fixed seat 4 and the movable seat 10 are assembled, the spring 17 is located between the fixed seat 4 and the movable seat 10 and is in a compressed state. When the adjusting nut 7 is rotated, the movable bolt 9 cannot rotate synchronously with the adjusting nut 7. In this way, the position of the adjusting nut 7 on the movable bolt 9 can be changed, so that the movable bolt 9 can move up and down, and under the action of the spring 17, the movable seat 10 and the lower triangle block 11 keep moving synchronously with the movable bolt 9.

[0026] A guide column 12 is provided on the bottom ring seat 5, and a slide groove 13 for the guide column 12 to slide is provided on the fixed seat 4. The extension line of the center of the slide groove 13 passes through the center of the needle cylinder 1. After the fixed seat 4 and the movable seat 10 are assembled, the slide groove 13 on the fixed seat 4 is aligned with the guide column 12, and then the fixed seat 4 is pushed horizontally so that the fixed seat 4 slides horizontally. In this way, the guide column 12 slides in the slide groove 13, so that the fixed seat 4 approaches the center of the needle cylinder 1, and then the lower guide surface 19 on the lower triangular block 11 moves to directly below the knitting needle 2.

[0027] A mounting platform 14 is provided on the movable seat 10, one side of the lower triangular block 11 is in conflict with the mounting platform 14, and a latch 18 is provided between the lower triangular block 11 and the movable seat 10, and the lower end of the knitting needle 2 is provided with a rounded corner. The mounting platform 14 and the latch 18 can ensure the accuracy of the installation position of the movable seat 10 and the lower triangular block 11. The rounded corner can reduce the contact area between the knitting needle 2 and the lower guide needle surface 19 on the lower triangular block 11, and allow the knitting needle 2 to slide smoothly along the lower guide needle surface 19.

[0028] A method for installing a needle cylinder and a cam of a circular knitting machine comprises the following steps:

[0029] S1: Fix the needle cylinder 1 equipped with the positioning ring 23 to the transmission gear of the circular knitting machine, then fix the bottom ring seat 5 to the support frame of the circular knitting machine, and then insert all the knitting needles 2 into the slots one by one, and push the knitting needles 2 down to the lowest point so that the bayonet 20 on the knitting needle 2 contacts the positioning ring 23;

[0030] S2: Insert the guide rod 16 through the spring 17 and into the movable seat 10. Then, pass the movable bolt 9 from bottom to top through the movable seat 10 and the fixed seat 4, and adjust the nut 7 to connect them. Keep the movable seat 10 at the lowest position.

[0031] S3: Fix the upper triangle block 6 of the needle-casting cam, the return stitch cam and the flat needle cam on the fixed seat 4, and then fix the lower triangle block 11 of the needle-casting cam, the return stitch cam and the flat needle cam on the movable seat 10, then install the fixed seat 4 on the guide column 12, and push the fixed seat 4 toward the center of the needle cylinder 1 until the guide column 12 cannot slide in the slide groove 13, so that the lower needle guide surface 19 on the lower triangle block 11 is directly below the knitting needle 2;

[0032] S4: Turn the adjusting nut 7 clockwise. The movable bolt 9 cannot rotate due to the restriction of the limit part 22 and can only drive the movable seat 10 and the lower triangular block 11 to move upward. When the lower guide surface 19 on the lower triangular block 11 contacts the knitting needle 2, the knitting needle 2 keeps moving synchronously with the lower triangular block 11 until the movable seat 10 moves to a preset height, so that when the knitting needle 2 rotates with the needle cylinder 1, the movable range of the knitting needle 2 is limited between the upper guide surface 15 and the lower guide surface 19.

[0033] When the knitting needle 2 is inserted into the slot of the needle cylinder 1, all the knitting needles 2 are pushed downward until they contact the fixed ring 8. At this time, the height of the lowest ends of all the knitting needles 2 is kept consistent. After the fixed seat 4 and the movable seat 10 are installed on the bottom ring seat 5, they slide along the slide groove 13, and the lower guide surface 19 on the lower triangle block 11 moves to just below the knitting needle 2. Then the adjusting nut 7 is rotated to make the movable bolt 9 drive the movable seat 10 to move upward. After the lower guide surface 19 contacts the knitting needle 2, it continues to move upward. In this way, due to the different heights of each position on the lower guide surface 19, when the movable seat 10 moves the same distance, the knitting needles 2 at different positions are pushed upward by different distances. Because the surface trajectory of the lower guide surface 19 is basically similar to the surface trajectory of the upper guide surface 15, it is equivalent to dividing the upper and lower surfaces of the needle groove in a triangle in the prior art into two independently controlled parts, that is, Figure 1 The relative positions of arrows A and B are fixed, and both are in contact with the butt 21 of the knitting needle 2, and Figure 4 The position of the upper needle guide surface 15 is fixed, while the position of the lower needle guide surface 19 is adjustable, and both are in contact with the butt 21 of the knitting needle 2 and the lower end of the knitting needle 2 respectively. With this design structure, when replacing the cam for knitting fabrics of different tissue structures, there is no need to adjust the height of the knitting needle 2 relative to the needle groove on the traditional cam one by one, thereby simplifying the operation.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0035] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A circular knitting machine needle cylinder and cam adjustment mechanism, comprising a bottom ring seat (5), a needle cylinder (1) and a cam, characterized in that: The bottom ring seat (5) is located on the outside of the needle cylinder (1), and a plurality of slots are provided on the outside of the needle cylinder (1). A knitting needle (2) is installed in the slot, and a needle butt (21) is provided in the middle of the knitting needle (2), and a bayonet (20) is provided at the lower end of the needle cylinder (1). A positioning ring (23) is provided at the lower end of the needle cylinder (1) for preventing the knitting needle (2) from falling out of the needle cylinder (1), and a fixing ring (8) is provided on the outside of the needle cylinder (1) for preventing the knitting needle (2) from falling. The bottom ring seat (5) is provided on the outside of the needle cylinder (1) for preventing the knitting needle (2) from falling out. ) is provided with a plurality of fixing components for installing the triangle, the fixing components including a fixed seat (4), a movable seat (10), a movable bolt (9) and an adjusting nut (7), the fixed seat (4) is a stepped structure, and the middle part of the fixed seat (4) is provided with a hollow, the bottom ring seat (5) is provided with a pressure ring (3) for installing the fixed seat (4), the movable seat (10) is installed in the hollow, one end of the movable bolt (9) passes through the movable seat (10) and the fixed seat (4) and is connected to the adjusting nut (7 ) is threadedly connected, the movable bolt (9) has a limiting portion (22) slidably arranged on the movable seat (10), the triangle includes a needle triangle, a flat needle triangle and a return needle triangle, the needle triangle, the flat needle triangle and the return needle triangle are all composed of an upper triangle block (6) and a lower triangle block (11), the upper triangle block (6) is fixed to the side of the fixed seat (4) close to the needle cylinder (1), and the upper triangle block (6) has an upper needle guide surface (15) that slides relative to the needle butt (21), the lower triangle block (11) is fixed The movable seat (10) is fixed on the movable seat, and the lower triangular block (11) has a lower needle guide surface (19) that slides relative to the lower end of the knitting needle (2). A reset member is provided between the fixed seat (4) and the movable seat (10). The adjusting nut (7) is used to adjust the height of the lower triangular block (11). When the lower needle guide surface (19) is located directly below the knitting needle (2), the adjusting nut (7) is rotated to make the lower needle guide surface (19) drive each knitting needle (2) to move upward to different heights according to the different surface heights of the lower needle guide surface (19).

2. The adjustment mechanism for the needle cylinder and cam of a circular knitting machine according to claim 1, characterized in that: The reset member includes a spring (17) and a guide rod (16), one end of the guide rod (16) is fixed to the fixed seat (4), and the other end is slidably arranged with the movable seat (10), the spring (17) is sleeved on the outside of the guide rod (16), and the two ends of the spring (17) are respectively in contact with the fixed seat (4) and the movable seat (10).

3. The adjustment mechanism for the needle cylinder and cam of a circular knitting machine according to claim 2, characterized in that: A guide column (12) is provided on the bottom ring seat (5), and a slide groove (13) for the guide column (12) to slide is provided on the fixed seat (4), and an extension line of the center of the slide groove (13) passes through the center of the needle cylinder (1).

4. The adjustment mechanism for the needle cylinder and cam of a circular knitting machine according to claim 3, characterized in that: A mounting platform (14) is provided on the movable seat (10), one side of the lower triangular block (11) contacts the mounting platform (14), and a latch (18) is provided between the lower triangular block (11) and the movable seat (10), and a rounded corner is provided at the lower end of the knitting needle (2).

5. A method for installing a circular knitting machine needle cylinder and cam, using the circular knitting machine needle cylinder and cam adjustment mechanism according to claim 4, characterized in that: The following steps are involved: S1: Fix the needle cylinder (1) equipped with the positioning ring (23) to the transmission gear of the circular knitting machine, then fix the bottom ring seat (5) to the support frame of the circular knitting machine, and then insert all the knitting needles (2) into the slots one by one, and push the knitting needles (2) down to the lowest point so that the bayonet (20) on the knitting needles (2) contacts the positioning ring (23); S2: Insert the guide rod (16) through the spring (17) into the movable seat (10), and then let the movable bolt (9) pass through the movable seat (10) and the fixed seat (4) from bottom to top, and then adjust the nut (7) to connect, and keep the movable seat (10) at the lowest position; S3: Fix the upper triangle block (6) of the needle-raising triangle, the back-stitch triangle and the flat-needle triangle on the fixed seat (4), then fix the lower triangle block (11) of the needle-raising triangle, the back-stitch triangle and the flat-needle triangle on the movable seat (10), and then install the fixed seat (4) on the guide column (12), and push the fixed seat (4) toward the center of the needle cylinder (1) until the guide column (12) cannot slide in the slide groove (13), so that the lower needle guide surface (19) on the lower triangle block (11) is located directly below the knitting needle (2); S4: The adjusting nut (7) is rotated clockwise. The movable bolt (9) cannot rotate under the restriction of the limiting portion (22) and can only drive the movable seat (10) and the lower triangular block (11) to move upward. When the lower needle guide surface (19) on the lower triangular block (11) contacts the knitting needle (2), the knitting needle (2) keeps moving synchronously with the lower triangular block (11) until the movable seat (10) moves to a preset height, so that when the knitting needle (2) rotates with the needle cylinder (1), the range of movement of the knitting needle (2) is limited between the upper needle guide surface (15) and the lower needle guide surface (19).

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