Improved knife hook assembly and computer jacquard machine

Abstract

The utility model relates to the technical field of knitting equipment, in particular to an improved knife hook assembly and a computer jacquard machine, the improved knife hook assembly comprises two groups of crochet needles and a knife needle, the knife needle is arranged at the interval between the two groups of crochet needles in an up-and-down movable mode, the knife needle comprises a cutting part, a connecting part and a first needle handle, the cutting part comprises a first cutting edge and a second cutting edge, the first cutting edge is located on the upper side of the cutting part and is obliquely arranged, the second cutting edge is located on the lower side of the cutting part and is obliquely arranged, and the cutter needle in the cutter hook assembly is provided with the first cutting edge used for cutting yarn when the cutter needle ascends and the second cutting edge used for cutting yarn when the cutter needle descends. If the yarn is not cut off by the first blade, the yarn can be cut by the second blade, so that the yarn can be reliably cut off.

Description

Technical Field

[0001] The utility model relates to the technical field of knitting equipment, in particular to an improved knife-hook combination and a computer jacquard machine. Background Art

[0002] The knife hook combination is a kind of knitting needle product, which is widely used in computer jacquard machines with the ability to produce fluffy structures. The knife hook combination includes a hook needle and a knife needle. The hook needle is used to hook and weave the yarn, and the knife needle is used to cut the yarn to form fluff. The existing knife hook combination has the following problems: different products have different knitting processes and different yarn materials. If the yarn to be cut has high toughness, high yarn strength, or low yarn tension during cutting, it is possible that a single rise of the knife needle fails to cut it, thereby affecting the knitting process and causing defects in the fabric product. Utility Model Content

[0003] In order to overcome the deficiencies in the prior art, the utility model provides an improved knife-hook combination and a computer jacquard machine which can ensure that the yarn is reliably cut.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: an improved knife hook combination, including a hook needle and a knife needle, the hook needle is provided with two groups and the two groups of hook needles are arranged at intervals, the knife needle can move up and down and is arranged at the interval between the two groups of hook needles, the knife needle includes a cutting part, a connecting part, and a first needle handle from top to bottom, the cutting part includes a first blade and a second blade, the first blade is located on the upper side of the cutting part and is inclined, the second blade is located on the lower side of the cutting part and is inclined, the low end of the first blade intersects with the low end of the second blade and forms an acute angle structure.

[0005] Furthermore, the first blade is tilted downward from the needle back side toward the front side, and the angle between the first blade and the vertical plane is 35° to 50°.

[0006] Furthermore, the second blade is arranged to be inclined downward from the needle back side toward the front side, and the angle between the second blade and the vertical plane is 60° to 80°.

[0007] Furthermore, the connecting portion is located on the needle back side of the knife needle, the lower end of the connecting portion is connected to the first needle handle, and the upper end of the connecting portion extends to connect to the cutting portion.

[0008] Furthermore, a third blade extending vertically is provided on the front side of the connecting portion, and a second acute angle structure facing upward is formed at the junction of the second blade and the third blade.

[0009] Furthermore, a first needle butt is provided on the first needle handle of the knife needle.

[0010] Furthermore, it also includes a tail piece and a jacquard needle, the tail piece is provided with a second needle butt, the lower part of the tail piece is provided with a hooking part for buckling with the jacquard piece, the crochet needle includes a second needle handle, the tail piece is arranged between two groups of crochet needles, and the upper part of the tail piece and the lower part of the second needle handle are stacked and positioned and connected with the two groups of second needle handles.

[0011] Furthermore, a plurality of first through holes are provided on the upper portion of the tail piece, a plurality of second through holes corresponding to the positions of the first through holes are provided on the lower portion of the second needle handle, a tensioning column is provided in the first through hole, both ends of the tensioning column are respectively embedded in the second through holes of the second needle handles on both sides, both ends of the tensioning column are flush with the surface of the outer side surface of the second needle handle, the tensioning column is in an interference fit with the first through hole and the second through hole, and the positioning connection between the tail piece and the two groups of crochet needles is realized through the tensioning column.

[0012] A computer jacquard machine comprises the above-mentioned improved knife-hook combination.

[0013] From the above description of the utility model, it can be seen that compared with the prior art, the improved knife hook combination and computer jacquard machine provided by the utility model have the following advantages: the knife needle in the knife hook combination of the present application has a first blade for cutting the yarn when the knife needle rises, and a second blade for cutting the yarn when the knife needle descends. If the yarn fails to be cut by the first blade, it can still be cut by the second blade, which can ensure that the yarn is cut reliably; when the knife needle descends, the yarn will be pulled down and tightened to further ensure the completion of the yarn cutting action; the connecting part is provided with a third blade to cut the yarn entering there, which further ensures the execution of the yarn cutting action; the knife hook combination is assembled by a hook needle, a knife needle, a tail piece, and a jacquard needle, and the two groups of hook needles are connected to the tail piece by a tensioning column structure, and the production process is simple and the reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of the structure of an improved knife hook combination.

[0015] Figure 2 The utility model is a schematic diagram of the structure decomposition of an improved knife hook assembly.

[0016] Figure 3 This is a schematic diagram of the knife needle structure of the utility model.

[0017] Figure 4 The utility model is a schematic diagram of a triangular trajectory corresponding to an improved knife hook assembly.

[0018] The symbols in the figure correspond to the following: 1-hook hook, 11-second needle handle, 111-second perforation, 2-knife needle, 21-cutting part, 211-first blade, 212-second blade, 22-connecting part, 221-third blade, 23-first needle handle, 231-first needle butt, 3-tail piece, 31-second needle butt, 32-hook part, 33-first perforation, 34-tensioning column, 4-jacquard needle. DETAILED DESCRIPTION

[0019] The present invention is further described below through specific implementation methods.

[0020] Reference Figures 1 to 4 As shown, an improved knife-hook combination includes a crochet needle 1, a knife needle 2, a tail piece 3, and a jacquard needle 4.

[0021] The crochet needle 1 is provided with two groups and the two groups of crochet needles 1 are arranged at intervals, and the knife needle 2 is movable up and down and is arranged at the interval between the two groups of crochet needles 1. The knife needle 2 includes a cutting part 21, a connecting part 22, and a first needle handle 23 from top to bottom. The cutting part 21 includes a first blade 211 and a second blade 212. The first blade 211 is located on the upper side of the cutting part 21 and is arranged obliquely, and the second blade 212 is located on the lower side of the cutting part 21 and is arranged obliquely. The low end of the first blade 211 intersects with the low end of the second blade 212 and forms an acute angle structure. The first blade 211 is arranged obliquely downward from the needle back side toward the front side, and the angle between the first blade 211 and the vertical plane is 35° to 50°; the second blade 212 is arranged obliquely downward from the needle back side toward the front side, and the angle between the second blade 212 and the vertical plane is 60° to 80°. In one preferred embodiment, the angle between the first blade 211 and the vertical plane is 40°, and the angle between the second blade 212 and the vertical plane is 75°. The connecting portion 22 is located on the needle back side of the knife needle 2, the lower end of the connecting portion 22 is connected to the first needle handle 23, the upper end of the connecting portion 22 extends to connect with the cutting portion 21, and the front side of the connecting portion 22 is provided with a vertically extending third blade 221, and the intersection of the second blade 212 and the third blade 221 forms a second acute angle structure facing upward. The first needle handle 23 of the knife needle 2 is provided with a first needle butt 231.

[0022] A second needle butt 31 is provided on the tail piece 3, and a hooking portion 32 for buckling with the jacquard piece 4 is provided at the lower part of the tail piece 3. The crochet needle 1 includes a second needle handle 11. The tail piece 3 is arranged between the two groups of crochet needles 1, and the upper part of the tail piece 3 and the lower part of the second needle handle 11 are stacked and positioned and connected with the two groups of second needle handles 11. A plurality of first through holes 32 are opened at the upper part of the tail piece 3, and a plurality of second through holes 111 corresponding to the positions of the first through holes 33 are provided at the lower part of the second needle handle 11. A tensioning column 34 is provided in the first through hole 33, and two ends of the tensioning column 34 are respectively embedded in the second through holes 111 of the second needle handles 11 on both sides. The two ends of the tensioning column 34 are flush with the surface of the outer side surface of the second needle handle 11, and the tensioning column 34 is in an interference fit with the first through hole 33 and the second through hole 111. The tensioning column 34 is used to realize the positioning connection between the tail piece 3 and the two groups of crochet needles 1.

[0023] A computer jacquard machine comprises the above-mentioned improved knife-hook combination.

[0024] The working principle of this improved knife hook assembly is as follows:

[0025] The knife hook combination of the present application is assembled from a hook needle 1, a knife needle 2, a tail piece 3, and a jacquard needle 4. The two groups of hook needles 1 are connected to the tail piece 3 by a tensioning column 34, and the production process is simple and has high reliability.

[0026] The improved knife hook assembly is applied to a computer jacquard machine. Two groups of crochet needles 1 move synchronously, and the lifting and lowering drive is realized by the cooperation of the second needle butt 31 on the tail piece 3 and the corresponding triangular track; the knife needle 2 is lifted and lowered by the cooperation of the first needle butt and the corresponding triangular track (refer to Figure 4 Schematic diagram of the triangular trajectory shown). The two groups of crochet needles 1 rise to hook the yarn and then pull it down, and the knife needle 2 rises to make the first blade 211 cut the yarn between the two groups of crochet needles 1. Under normal circumstances, the first blade 211 can cut the yarn. If the yarn toughness and strength are high, or the yarn tension is low, the first blade 211 fails to cut the yarn. At this time, as the knife needle 2 rises, the yarn slides through the low end of the first blade 211 and enters under the second blade 212, and then as the knife needle 2 descends, the yarn is cut by the second blade 212, which plays a second cutting action, and the descent of the knife needle 2 will increase the tension of the yarn by pulling it down, further ensuring the execution of the yarn cutting action. If during the action of the knife needle 2, the yarn does not pass through the second blade 212, but directly reaches the connecting part 22, the connecting part 22 is provided with a third blade 221, which can also cut the yarn, further ensuring the execution of the yarn cutting action.

[0027] The above is only a specific implementation of the present utility model, but the design concept of the present utility model is not limited to this. Any non-substantial changes to the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. An improved knife hook assembly, characterized in that: It includes a hook needle and a knife needle. The hook needle is provided with two groups and the two groups of hook needles are arranged at intervals. The knife needle can move up and down and is arranged at the interval between the two groups of hook needles. The knife needle includes a cutting part, a connecting part, and a first needle handle from top to bottom. The cutting part includes a first blade and a second blade. The first blade is located on the upper side of the cutting part and is inclined. The second blade is located on the lower side of the cutting part and is inclined. The low end of the first blade intersects with the low end of the second blade to form an acute angle structure.

2. The improved knife hook assembly according to claim 1, characterized in that: The first blade is tilted downward from the needle back side toward the front side, and the angle between the first blade and the vertical plane is 35° to 50°.

3. The improved knife hook assembly according to claim 1, characterized in that: The second blade is arranged to be inclined downward from the needle back side toward the front side, and the included angle between the second blade and the vertical plane is 60° to 80°.

4. The improved knife hook assembly according to claim 1, characterized in that: The connecting part is located at the needle back side of the knife needle, the lower end of the connecting part is connected to the first needle handle, and the upper end of the connecting part extends to be connected to the cutting part.

5. The improved knife hook assembly according to claim 4, characterized in that: The front side of the connecting portion is provided with a third blade extending vertically, and the intersection of the second blade and the third blade forms a second acute angle structure facing upward.

6. The improved knife hook assembly according to claim 1, characterized in that: The first needle handle of the knife needle is provided with a first needle butt.

7. The improved knife hook assembly according to claim 1, characterized in that: It also includes a tail piece and a jacquard needle, wherein the tail piece is provided with a second needle butt, the lower part of the tail piece is provided with a hooking part for buckling with the jacquard piece, the crochet needle includes a second needle handle, the tail piece is arranged between two groups of crochet needles, and the upper part of the tail piece and the lower part of the second needle handle are stacked and positioned and connected with the two groups of second needle handles.

8. The improved knife hook assembly according to claim 7, characterized in that: A plurality of first through holes are provided on the upper portion of the tail piece, a plurality of second through holes corresponding to the positions of the first through holes are provided on the lower portion of the second needle handle, a tensioning column is provided in the first through hole, both ends of the tensioning column are respectively embedded in the second through holes of the second needle handles on both sides, both ends of the tensioning column are flush with the surface of the outer side surface of the second needle handle, the tensioning column is in an interference fit with the first through hole and the second through hole, and the positioning connection between the tail piece and the two groups of crochet needles is realized through the tensioning column.

9. A computer jacquard machine, characterized in that: An improved knife hook assembly comprising any one of claims 1-8.

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