Large component of high-density separation type needle selection device and electronic jacquard machine

Abstract

The invention discloses a large component of a high-density separation type needle selection device and an electronic jacquard machine. The large assembly comprises an electromagnet plate formed by stacking 8n electromagnet units front and back, a pulley block plate formed by stacking 8n pulley block units front and back, a left armature hook plate formed by stacking 8n left armature hook units front and back, a right armature hook plate formed by stacking 8n right armature hook units front and back, a mounting frame and a driving printed circuit board. Each electromagnet unit is installed above the corresponding pulley block unit in a longitudinal separation mode, and each left armature hook unit and each right armature hook unit are installed on the left side and the right side of the corresponding electromagnet unit respectively in a lateral separation mode. By the adoption of the separated design, maintenance is convenient, shock absorption and heat dissipation of the electromagnet unit are facilitated, working requirements are better met, the movement flexibility of the armature hook is improved, the production cost is reduced, and the production quality and reliability of a high-density large assembly are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic jacquard machines of textile machinery, and in particular relates to a large assembly of a high-density separated needle selection device and an electronic jacquard machine. Background Art

[0002] In recent years, electronic jacquard machines have made great progress. Electronic jacquard machines use a key component called a needle selection device (also called a solenoid valve, electromagnet, assembly, etc.). The needle selection device is the executive component of the electronic jacquard machine, and its function is to convert electrical signals into the rise and fall of the warp yarn. The working principle of the needle selection device is a well-known technology, including a vertical hook that moves up and down with the jacquard knife, and the vertical hook is controlled by an electromagnet and its armature hook to "hang" and "take off". When "hanging", the vertical hook does not move with the knife, and when "taking off", the vertical hook moves with the knife. Since the vertical hook connects the harness and the heald to control the warp yarn, the rise and fall of the vertical hook corresponds to the rise and fall of the warp yarn.

[0003] Jacquard machines are divided into single-action and double-action types. The double-action type has a complex mechanism. One jacquard needle corresponds to two vertical hooks, and the two vertical hooks are converted into the rise and fall of a jacquard needle (first line) through a pulley block. The double-action jacquard machine causes less damage to the warp yarn, which is beneficial to weaving. Currently, most electronic jacquard machines are double-action type. The needle selection device produced in large quantities commercially often makes 8 (or multiples of 8) electromagnets and corresponding mechanisms into a combination, which is convenient for installation and maintenance. A well-known brand of electronic jacquard machine makes 8 electromagnets, corresponding mechanisms and pulley blocks into an independent component. A needle box is set in the jacquard machine, and the components are densely arranged in a rectangular shape in the needle box. The drive circuit board is electrically connected to the components through edge connectors.

[0004] This assembly is based on a plastic clip with a complex shape. All parts required for a set of needle selection devices are installed on the plastic clip or between two plastic clips, including electromagnets, two armature hooks, two springs, two vertical hooks, pulley blocks, upper pulley lines, lower pulley lines, first line joints, etc. A clip with all parts installed is a set of needle selection devices, which can realize the complete needle selection function of a jacquard needle. A commonly used 8-needle assembly is a combination of 8 such complete functional pieces. If you want to produce a 10,000-needle jacquard machine, you actually have to produce 10,000 such functional pieces.

[0005] When the electronic jacquard machine develops to a large number of needles, it is bound to put forward requirements for the density of the needle selection device. Otherwise, the jacquard machine is too large to match the loom for installation, so the demand for high-density needle selection devices is proposed. Double-layer technology is an idea to increase the density of the needle selection device, including double-layer electromagnets and double-layer pulley blocks. If the aforementioned functional sheet method is continued, the size of the functional sheet will increase, the complexity will increase, and the difficulty of assembly will increase, resulting in an increase in production costs and a decrease in product quality and reliability. At the same time, the convenience of installation, debugging, and maintenance at the weaving site must also be considered. Summary of the invention

[0006] In order to overcome the technical difficulties existing in the above-mentioned prior art, the present invention provides a high-density separated needle selection device large assembly and an electronic jacquard machine.

[0007] In order to solve the above technical problems and achieve the above technical effects, the present invention is implemented through the following technical solutions:

[0008] A high-density separation type needle selection device large assembly, comprising an electromagnet plate formed by 8n electromagnet units stacked front and back, a pulley block plate formed by 8n pulley block units stacked front and back, a left armature hook plate formed by 8n left armature hook units stacked front and back, a right armature hook plate formed by 8n right armature hook units stacked front and back, a mounting frame and a driving printed circuit board, n is a positive integer; the electromagnet plate, the left armature hook plate, the right armature hook plate and the driving printed circuit board are assembled into a whole through the mounting frame and then installed on the top of the electromagnet plate; each of the electromagnet units is installed above the corresponding pulley block unit by adopting a longitudinal separation design, and each of the left armature hook unit and each of the right armature hook units are respectively installed on the left and right sides of the corresponding electromagnet unit by adopting a lateral separation design; the electromagnet unit comprises an upper electromagnet and a lower electromagnet; The left armature hook unit comprises an upper left armature hook and a matching rotating shaft and a reset torsion spring for cooperating with the left magnetic pole surface of the upper electromagnet, and a lower left armature hook and a matching rotating shaft and a reset torsion spring for cooperating with the left magnetic pole surface of the lower electromagnet; the right armature hook unit comprises an upper right armature hook and a matching rotating shaft and a reset torsion spring for cooperating with the right magnetic pole surface of the upper electromagnet, and a lower right armature hook and a matching rotating shaft and a reset torsion spring for cooperating with the right magnetic pole surface of the lower electromagnet; the pulley block unit comprises a double-layer upper pulley block and a double-layer lower pulley block, the upper pulley line ends of the double-layer upper pulley block are respectively connected upward with a left rear vertical hook for cooperating with the upper left armature hook and a right rear vertical hook for cooperating with the upper right armature hook, and the upper pulley line ends of the double-layer lower pulley block are respectively connected upward with a left front vertical hook for cooperating with the lower left armature hook and a right front vertical hook for cooperating with the lower right armature hook.

[0009] Furthermore, the electromagnet unit also includes an electromagnet frame, the upper electromagnet and the lower electromagnet are respectively installed at the upper and lower ends of the electromagnet frame, the upper electromagnet and the lower electromagnet are symmetrically arranged up and down, a printed circuit board slot board is arranged at the top of the electromagnet frame, a printed circuit board slot is opened at the top of the printed circuit board slot board, coil pins respectively connected to the upper electromagnet coil and the lower electromagnet coil are arranged on the left and right sides of the printed circuit board slot board, a lower buckle is arranged on the front of the middle part of the electromagnet frame, and the electromagnet frame A lower card slot is provided on the back of the middle part, and the lower card buckle corresponds to the lower card slot in front and back and matches in size; an upper card buckle is provided on the front of the printed circuit board slot board, and an upper card slot is provided on the back of the printed circuit board slot board, and the upper card buckle corresponds to the upper card slot in front and back and matches in size; a through hole is opened in the middle of the electromagnet skeleton; two adjacent electromagnet skeletons are spliced ​​front and back through the cooperation of the upper card buckle and the lower card slot and the cooperation of the lower card buckle and the lower card slot, and are fixed by the cooperation of the corresponding fasteners and the through holes after splicing.

[0010] Furthermore, the upper electromagnet and the lower electromagnet have the same structure, and are both formed by winding enameled wire around the outside of an I-shaped iron core, a crossbeam at one end of the I-shaped iron core being a long magnetic pole, and a crossbeam at the other end of the I-shaped iron core being a short magnetic pole; the left and right ends of the long magnetic pole have a first bending portion bent backward, and the left and right ends of the short magnetic pole have a second bending portion bent forward, the first bending portion and the second bending portion are in a front-to-back misaligned form, and the misalignment amplitude is equal to the thickness of the straight rod portion; the concave surface of the first bending portion serves as a sliding magnetic pole surface, and the side end surface of the second bending portion serves as an attraction magnetic pole surface, the sliding magnetic pole surface and the attraction magnetic pole surface located on the same side constitute two intersecting magnetic pole surfaces; a magnetic conductive plastic upper cover is provided in front of the sliding magnetic pole surface, and there is a spacing between the magnetic conductive plastic upper cover and the sliding magnetic pole surface to form a groove for facilitating the embedding of the armature hook, and a magnetic conductive elastic member for contacting the armature hook is provided in the groove.

[0011] Furthermore, the left armature hook unit also includes a left front dividing piece and a left rear dividing piece that can be spliced ​​together front and back; the front side of the left front dividing piece is provided with a left front vertical hook guide rail for the left front vertical hook to slide up and down, the lower part of the left front dividing piece is provided with a left lower hook shaft hole and a left lower torsion spring hole, and the lower part of the left rear dividing piece is provided with a left lower hook rotating shaft that can cooperate with the left lower hook shaft hole and a left lower torsion spring rotating shaft that can cooperate with the left lower torsion spring hole; the left lower armature hook and its left lower return torsion spring are located on the front side of the left front dividing piece and on the left side of the left front vertical hook guide rail, and the shaft hole portion of the left lower armature hook is aligned with the shaft hole portion passing through the left The left lower hook shaft behind the lower hook shaft hole is rotatably connected, the lower end of the left lower return torsion spring is rotatably connected with the left lower torsion spring shaft after passing through the left lower torsion spring hole, the upper end of the left lower return torsion spring is hooked with the left side of the middle part of the left lower armature hook, and the hook tip of the left lower armature hook can keep extending to the right into the left front vertical hook guide rail under the action of the restoring force of the left lower return torsion spring; the front side of the left rear dividing piece is provided with a left rear vertical hook guide rail for the left rear vertical hook to slide up and down, the upper part of the left front dividing piece is provided with a left upper hook shaft hole and a left upper torsion spring hole, and the upper part of the left rear dividing piece is provided with a The left upper hook rotating shaft and the left upper torsion spring rotating shaft that can cooperate with the left upper torsion spring hole; the left upper armature hook and its upper left return torsion spring are located on the front side of the left rear dividing sheet, and on the left side of the left rear vertical hook guide rail, the shaft hole portion of the left upper armature hook is rotatably connected with the left upper hook rotating shaft after passing through the left upper hook shaft hole, the upper end of the left upper return torsion spring is rotatably connected with the left upper torsion spring rotating shaft after passing through the left upper torsion spring hole, and the lower end of the left upper return torsion spring is hooked with the left side of the middle part of the left upper armature hook, and the hook tip portion of the left upper armature hook can keep extending rightward into the left rear under the action of the restoring force of the left upper return torsion spring. In the vertical hook guide rail; the tops of the left front separator and the left rear separator are both provided with upper fixing holes, and the bottoms of the left front separator and the left rear separator are both provided with lower fixing holes; the left front separator and the left rear separator are spliced ​​front and back by the cooperation of the left lower hook shaft and the left lower hook shaft hole, the cooperation of the left lower torsion spring shaft and the left lower torsion spring hole, the cooperation of the left upper hook shaft and the left upper hook shaft hole, and the cooperation of the left upper torsion spring shaft and the left upper torsion spring hole; and the two adjacent left armature hook units are fixed by the cooperation of the corresponding fasteners with the upper fixing holes and the lower fixing holes after splicing;

[0012] The left armature hook unit also includes a right front dividing piece and a right rear dividing piece that can be assembled together front and back; a right front vertical hook guide rail for the right front vertical hook to slide up and down is arranged on the front side of the right front dividing piece, a right lower hook shaft hole and a right lower torsion spring hole are provided at the lower part of the right front dividing piece, and a right lower hook rotating shaft that can cooperate with the right lower hook shaft hole and a right lower torsion spring rotating shaft that can cooperate with the right lower torsion spring hole are provided at the lower part of the right rear dividing piece; the right lower armature hook and its right lower return torsion spring are located on the front side of the right front dividing piece and on the left side of the right front vertical hook guide rail, and the shaft hole portion of the right lower armature hook is aligned with the shaft hole passing through the right lower hook shaft hole The right lower hook shaft is rotatably connected to the rear, and the lower end of the right lower return torsion spring is rotatably connected to the right lower torsion spring shaft after passing through the right lower torsion spring hole, and the upper end of the right lower return torsion spring is hooked with the left side of the middle part of the right lower armature hook, and the hook tip of the right lower armature hook can keep extending to the right into the right front vertical hook guide rail under the action of the restoring force of the right lower return torsion spring; the front side of the right rear dividing piece is provided with a right rear vertical hook guide rail for the right rear vertical hook to slide up and down, the upper part of the right front dividing piece is provided with a right upper hook shaft hole and a right upper torsion spring hole, and the upper part of the right rear dividing piece is provided with a right The upper hook shaft and the upper right torsion spring shaft that can cooperate with the upper right torsion spring hole; the upper right armature hook and its upper right return torsion spring are located on the front side of the right rear dividing piece, and on the left side of the right rear vertical hook guide rail, the shaft hole portion of the upper right armature hook is rotatably connected with the upper right hook shaft after passing through the upper right hook shaft hole, the upper end of the upper right return torsion spring is rotatably connected with the upper right torsion spring shaft after passing through the upper right torsion spring hole, the lower end of the upper right return torsion spring is hooked with the left side of the middle part of the upper right armature hook, and the hook tip portion of the upper right armature hook can keep extending rightward into the right rear vertical hook under the action of the restoring force of the upper right return torsion spring. In the guide rail; the tops of the right front separator and the right rear separator are both provided with upper fixing holes, and the bottoms of the right front separator and the right rear separator are both provided with lower fixing holes; the right front separator and the right rear separator are spliced ​​front and back by the cooperation of the right lower hook shaft and the right lower hook shaft hole, the cooperation of the right lower torsion spring shaft and the right lower torsion spring hole, the cooperation of the right upper hook shaft and the right upper hook shaft hole, and the cooperation of the right upper torsion spring shaft and the right upper torsion spring hole; and the two adjacent left armature hook units are fixed by the cooperation of the corresponding fasteners with the upper fixing holes and the lower fixing holes after splicing.

[0013] Further, the lower left armature hook, the upper left armature hook, the lower right armature hook and the upper right armature hook each include a straight rod portion with a rectangular cross section, a magnetic pole surface sliding contact portion, a magnetic pole surface suction contact portion, a shaft hole portion and a hook tip portion;

[0014] In the lower left armature hook, the shaft hole portion is arranged on the left side of the bottom end of the straight rod portion through the magnetic pole surface sliding contact portion, and the hook tip portion is arranged on the right side of the top end of the straight rod portion through the magnetic pole surface suction contact portion, and the hook tip portion and the magnetic pole surface suction contact portion are both on the right side of the lower left hook shaft, and the hook tip portion presents a "lifting hook" structure opening toward the upper right; when the lower electromagnet is energized, the magnetic pole surface sliding contact portion and the magnetic pole surface suction contact portion can contact the two magnetic pole surfaces on the left side of the lower electromagnet to form a lower left closed magnetic circuit, and the shaft hole portion is located outside the lower left closed magnetic circuit;

[0015] In the upper left armature hook, the shaft hole portion is arranged on the right side of the top end of the straight rod portion through the magnetic pole surface sliding contact portion, and the hook tip portion is arranged on the right side of the bottom end of the straight rod portion through the magnetic pole surface suction contact portion, and the hook tip portion and the magnetic pole surface suction contact portion are both on the left side of the upper left hook shaft, and the hook tip portion is in the structure of a "lifting hook" opening toward the upper right; when the upper electromagnet is energized, the magnetic pole surface sliding contact portion and the magnetic pole surface suction contact portion can contact the two magnetic pole surfaces on the left side of the upper electromagnet to form an upper left closed magnetic circuit, and the shaft hole portion is located outside the upper left closed magnetic circuit;

[0016] In the lower right armature hook, the shaft hole portion is arranged on the right side of the bottom end of the straight rod portion through the magnetic pole surface sliding contact portion, and the hook tip portion is arranged on the left side of the top end of the straight rod portion through the magnetic pole surface suction contact portion, and the hook tip portion and the magnetic pole surface suction contact portion are both on the left side of the lower right hook shaft, and the hook tip portion presents a "lifting hook" structure opening toward the upper left; when the lower electromagnet is energized, the magnetic pole surface sliding contact portion and the magnetic pole surface suction contact portion can contact the two magnetic pole surfaces on the right side of the lower electromagnet to form a lower right closed magnetic circuit, and the shaft hole portion is located outside the lower right closed magnetic circuit;

[0017] In the upper right armature hook, the axial hole portion is arranged on the left side of the top end of the straight rod portion through the magnetic pole surface sliding contact portion, and the hook tip portion is arranged on the left side of the bottom end of the straight rod portion through the magnetic pole surface suction contact portion, the hook tip portion and the magnetic pole surface suction contact portion are both on the right side of the upper left hook shaft, and the hook tip portion presents a "lifting hook" structure opening toward the upper left; when the upper electromagnet is energized, the magnetic pole surface sliding contact portion and the magnetic pole surface suction contact portion can contact the two magnetic pole surfaces on the right side of the upper electromagnet to form an upper right closed magnetic circuit, and the axial hole portion is located outside the upper right closed magnetic circuit.

[0018] Further, the pulley block unit also includes a double-layer pulley block groove plate, which is composed of a first clamp and a second clamp spliced ​​together front and back, and the front groove plate of the first clamp is provided with three functional sections from top to bottom, namely, a double-layer lower pulley block upper pulley line groove section, a double-layer lower pulley block pulley slide groove section, and a double-layer lower pulley block lower pulley line groove section; the back groove plate of the first clamp is provided with three functional sections from top to bottom, namely, a double-layer upper pulley block upper pulley line groove section, a double-layer upper pulley block pulley slide groove section, and a double-layer upper pulley block lower pulley line groove section;

[0019] The upper pulley line groove section of the lower pulley block corresponds to the pulley line groove section of the upper pulley block in front and back positions, and the thickest pulley block bracket section of the upper pulley block pulley groove section is located at the center of the first clamp, and the upper pulley line groove section of the lower pulley block is located at both sides of the first clamp, and there is no conflict in space and can be nested; the pulley line groove section of the lower pulley block corresponds to the lower pulley line groove section of the upper pulley block in front and back positions, and the lower pulley line groove section of the upper pulley block is located at both sides of the first clamp and does not conflict with the pulley block bracket section of the pulley line groove section of the lower pulley block located at the center of the first clamp; the pulley groove section of the upper pulley block and the pulley groove section of the lower pulley block are designed in an up and down offset and stacked manner on the front and back sides, and the pulley groove section of the upper pulley block and the pulley groove section of the lower pulley block have the same thickness;

[0020] The left front vertical hook and the right front vertical hook are respectively slidably arranged on the left and right sides of the lower electromagnet up and down, and the double-layer lower pulley block is slidably arranged on the pulley slot section of the double-layer lower pulley block up and down, and the two ends of the upper pulley line of the double-layer lower pulley block are respectively connected with the bottom ends of the left front vertical hook and the right front vertical hook after passing through the upper pulley line slot section of the double-layer lower pulley block, and the two ends of the lower pulley line of the double-layer lower pulley block are fixed at one end after passing through the lower pulley line slot section of the double-layer lower pulley block, and the other end is connected with the first lead line joint; the left front vertical hook and the right front vertical hook drive the double-layer lower pulley block to rise and fall in the pulley slot section of the double-layer lower pulley block as the knife is lifted;

[0021] The left rear vertical hook and the right rear vertical hook are respectively slidably arranged on the left and right sides of the upper electromagnet up and down, and the double-layer upper pulley block is slidably arranged on the pulley slot section of the double-layer upper pulley block up and down, and the two ends of the upper pulley line of the double-layer upper pulley block are respectively connected with the bottom ends of the left rear vertical hook and the right rear vertical hook after passing through the upper pulley line slot section of the double-layer upper pulley block, and the two ends of the lower pulley line of the double-layer upper pulley block are fixed at one end after passing through the lower pulley line slot section of the double-layer upper pulley block, and the other end is connected with the second head line joint; the left rear vertical hook and the right rear vertical hook drive the double-layer upper pulley block to rise and fall in the pulley slot section of the double-layer upper pulley block as the knife is lifted;

[0022] The double-layer pulley block groove plate assembles the double-layer upper pulley block and its upper and lower pulley lines, the double-layer lower pulley block and its upper and lower pulley lines, the left front vertical hook, the left rear vertical hook, the right front vertical hook, the right rear vertical hook, the first first line joint and the second first line joint into a whole, and fixes them with fasteners; and the double-layer upper pulley block and the double-layer lower pulley block are realized by the front and rear concave and convex design of the double-layer lower pulley block pulley groove section and the double-layer upper pulley block pulley groove section inside the double-layer pulley block groove plate. The upper and lower pulley block is staggered and stacked in the same plane.

[0023] Furthermore, the left front vertical hook, the left rear vertical hook, the right front vertical hook and the right rear vertical hook have the same structure and all include a rod-shaped body, a side ear portion for hooking with the blade of a knife is provided in the middle portion of the outer side of the rod-shaped body, a top hook portion is provided at the top end of the inner side of the rod-shaped body, and the hook tip of the top hook portion is close to the edge of the inner side of the rod-shaped body, and the hook bottom of the top hook portion is close to the axis of the rod-shaped body; a convex edge is provided at the upper edge of the inner side of the rod-shaped body and below the top hook portion, and the convex edge can, when the vertical hook moves upward, laterally push the armature hook on the corresponding side from a static magnetic gap position away from the direction of the electromagnet to a dynamic magnetic gap position close to the direction of the electromagnet and keep it in the dynamic magnetic gap position, and the convex edge protrudes laterally from the hook tip of the top hook portion; the contour curve of the convex edge is divided into a portion located at the upper The pushing section of the upper section and the holding section located in the lower section, the pushing section is an inclined curve starting from the bottom of the hook of the top hook part, the holding section is a straight line parallel to the moving direction of the rod-shaped body, and the pushing section and the holding section are smoothly connected; the distance from the bottom of the holding section to the bottom of the hook of the top hook part is greater than the distance from the hook tip of the top hook part to the bottom of the hook of the top hook part; the length of the holding section of the convex edge corresponds to the tolerance range of the jacquard machine knife lifting height allowed by the needle selection device to which it belongs; the middle and lower parts of the inner side of the rod-shaped body are provided along their edges with a limiting convex edge for engaging with the corresponding groove type on the first clamp and ensuring that the vertical hook does not produce lateral displacement, and the top end of the limiting convex edge is connected to the bottom end of the convex edge holding section in a parallel straight line; at least one shock-absorbing groove for blocking the vibration of the knife lifting is provided between the side ear and the rod-shaped body.

[0024] Furthermore, the mounting frame is composed of a left front mounting plate, a left rear mounting plate, a right front mounting plate and a right rear mounting plate; the left front mounting plate is attached to the front end surface of the left armature hook plate after assembly, and the top end of the left front mounting plate is fixedly connected to the front end left side surface of the driving printed circuit board, and the bottom end of the left front mounting plate is fixedly connected to the front end left side surface of the pulley block plate after assembly; the left rear mounting plate is attached to the rear end surface of the left armature hook plate after assembly, and the top end of the left rear mounting plate is fixedly connected to the rear end left side surface of the driving printed circuit board, and the bottom end of the left rear mounting plate is fixedly connected to the rear end left side surface of the pulley block plate after assembly The right front mounting plate is attached to the front end face of the right armature hook plate after assembly, and the top end of the right front mounting plate is fixedly connected to the front right side face of the driving printed circuit board, and the bottom end of the right front mounting plate is fixedly connected to the front right side face of the pulley block plate after assembly; the right rear mounting plate is attached to the rear end face of the right armature hook plate after assembly, and the top end of the right rear mounting plate is fixedly connected to the rear right side face of the driving printed circuit board, and the bottom end of the right rear mounting plate is fixedly connected to the rear right side face of the pulley block plate after assembly; positioning mounting parts for cooperating with the needle box are installed on both sides of the pulley block plate.

[0025] Further, the number of the electromagnet unit, the pulley block unit, the left armature hook unit, and the right armature hook unit is a larger multiple of 8, and the larger multiple is n≥8.

[0026] An electronic jacquard machine adopts the above-mentioned high-density separated needle selection device large assembly.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention adopts a separate design for the pulley block unit, the electromagnet unit, and the left and right armature hook units of the needle selection device assembly. During on-site maintenance, the electromagnet part can be disassembled without moving the pulley block part, which is convenient for installation, debugging, and maintenance, and is beneficial to the shock absorption and heat dissipation of the electromagnet unit. The pulley block unit and the left and right armature hook units can be made of materials with different properties, which is more conducive to work requirements, improves the movement flexibility of the armature hook, improves the operating reliability of the assembly, reduces production costs, and improves the production quality and reliability of high-density large assemblies.

[0029] The plastic clip structure of the present invention is very suitable for the production and manufacturing of the pulley block, and the failure rate of the pulley block is relatively low during use. The double-layer pulley block structure makes the size of the clip longer, and the production cost of the plastic part is positively correlated with the size, so the pulley block is separated from the original functional sheet to become an independent pulley block plate.

[0030] The armature hook and the rotating shaft of the present invention are force-bearing parts. The main function of the clip structure in this part is to provide the rotating shaft and transmit the force to the needle box, which are not the strengths of plastic materials. The separation structure idea can break the boundaries of the functional sheet, adopt a metal through shaft with better performance, and add a metal rod with better load-bearing capacity. As long as the load-bearing capacity is not a problem, as many armature hooks as possible can be installed on one shaft, so a large number of components can be made.

[0031] The design of the return torsion spring of the present invention is the key to the separation structure, which not only realizes the independence of the armature hook part, but also provides the armature hook with a certain auxiliary positioning force, which is very beneficial during assembly.

[0032] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0034] Figure 1 It is a schematic diagram of the separate installation of the electromagnet plate, the left armature hook plate, the right armature hook plate, and the driving printed circuit board of the present invention;

[0035] Figure 2 It is a structural schematic diagram of the pulley block plate of the present invention;

[0036] Figure 3 It is a structural schematic diagram of the electromagnet unit of the present invention;

[0037] Figure 4 It is a structural schematic diagram of the left armature hook unit of the present invention;

[0038] Figure 5 It is a structural schematic diagram of the right armature hook unit of the present invention;

[0039] Figure 6 It is a schematic diagram of the assembly relationship between the upper electromagnet and the upper right armature hook of the present invention;

[0040] Figure 7 It is a structural schematic diagram of the pulley block unit of the present invention;

[0041] Figure 8 It is a structural schematic diagram of an embodiment of the vertical hook of the present invention;

[0042] Fig. 9It is a structural schematic diagram of another embodiment of the vertical hook of the present invention. DETAILED DESCRIPTION

[0043] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. The descriptions herein are used to provide a further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0044] See also Figure 1 and Figure 2 As shown, the present invention provides a large assembly of a high-density separated needle selection device, which mainly includes an electromagnet plate formed by 8n electromagnet units stacked front and back, a pulley block plate formed by 8n pulley block units stacked front and back, a left armature hook plate formed by 8n left armature hook units stacked front and back, a right armature hook plate formed by 8n right armature hook units stacked front and back, a mounting frame and a drive printed circuit board 10, where n is a positive integer.

[0045] The electromagnet plate, the left armature hook plate, the right armature hook plate and the drive printed circuit board 10 are assembled into a whole through the mounting frame and then mounted on the top of the electromagnet plate. Each of the electromagnet units is mounted on the top of the corresponding pulley block unit using a longitudinal separation design, and each of the left armature hook unit and each of the right armature hook units are respectively mounted on the left and right sides of the corresponding electromagnet unit using a lateral separation design.

[0046] The electromagnet unit includes an upper electromagnet 3b and a lower electromagnet 3a. The left armature hook unit includes a left upper armature hook 4a2 for cooperating with the left magnetic pole surface of the upper electromagnet 3b and its matching rotating shaft and reset torsion spring, and a left lower armature hook 4a1 for cooperating with the left magnetic pole surface of the lower electromagnet 3a and its matching rotating shaft and reset torsion spring. The right armature hook unit includes a right upper armature hook 5a2 for cooperating with the right magnetic pole surface of the upper electromagnet 3b and its matching rotating shaft, a reset torsion spring, and a right lower armature hook 5a1 for cooperating with the right magnetic pole surface of the lower electromagnet 3a and its matching rotating shaft, a reset torsion spring; the pulley block unit includes a double-layer upper pulley block 7b and a double-layer lower pulley block 7a, and the two ends of the upper pulley line of the double-layer upper pulley block 7b are upwardly connected with a left rear vertical hook 6a2 for cooperating with the upper left armature hook 4a2 and a right rear vertical hook 6b2 for cooperating with the upper right armature hook 5a2, and the two ends of the upper pulley line of the double-layer lower pulley block 7a are upwardly connected with a left front vertical hook 6a1 for cooperating with the lower left armature hook 4a1 and a right front vertical hook 6b1 for cooperating with the lower right armature hook 5a1.

[0047] See also Figure 3As shown, the electromagnet unit also includes an electromagnet frame 1, the upper electromagnet 3b and the lower electromagnet 3a are respectively installed at the upper and lower ends of the electromagnet frame 1, and the upper electromagnet 3b and the lower electromagnet 3a are symmetrically arranged up and down. A printed circuit board slot board 2 is arranged at the top of the electromagnet frame 1, and a printed circuit board slot 201 is opened at the top of the printed circuit board slot board 2. Coil pins 202 are respectively connected to the coil of the upper electromagnet 3b and the coil of the lower electromagnet 3a on the left and right sides of the printed circuit board slot board 2.

[0048] A lower buckle 101 is provided on the front of the middle part of the electromagnet skeleton 1, and a lower slot is provided on the back of the middle part of the electromagnet skeleton 1. The positions of the lower buckle 101 and the lower slot correspond to each other in front and back and the sizes match each other. An upper buckle 203 is provided on the front of the printed circuit board slot board 2, and an upper slot is provided on the back of the printed circuit board slot board 2. The positions of the upper buckle 203 and the upper slot correspond to each other in front and back and the sizes match each other. A through hole 102 is provided in the middle of the electromagnet skeleton 1. Two adjacent electromagnet skeletons 1 are spliced ​​together front and back through the cooperation between the upper buckle 203 and the lower slot and the cooperation between the lower buckle 101 and the lower slot, and are fixed by the cooperation between the corresponding fasteners and the through holes 102 after splicing.

[0049] See also Figure 6 As shown, the upper electromagnet 3b and the lower electromagnet 3a have the same structure, both of which are formed by winding enameled wire on the outside of an I-shaped iron core 301, and the cross beam at one end of the I-shaped iron core 301 is a long magnetic pole 302, and the cross beam at the other end of the I-shaped iron core 301 is a short magnetic pole 303. During installation, the long magnetic pole 302 of the upper electromagnet 3b is on the top and the short magnetic pole 303 is on the bottom, while the long magnetic pole 302 of the lower electromagnet 3a is on the bottom and the short magnetic pole 303 is on the top. The left and right ends of the long magnetic pole 302 have a first bending portion bent backward, and the left and right ends of the short magnetic pole 303 have a second bending portion bent forward, and the first bending portion and the second bending portion are in the form of front-to-back misalignment, and the misalignment amplitude is equal to the thickness of the straight rod portion 401. This is what makes the present invention different from the traditional solution. The iron core of the traditional solution is usually a planar structure with the magnetic poles facing the same direction. The iron core of the present invention is actually a spatial three-dimensional structure.

[0050] The concave surface of the first bending portion is used as the sliding magnetic pole surface 304, and the side end surface of the second bending portion is used as the magnetic pole surface 305 for attraction. The sliding magnetic pole surface 304 and the magnetic pole surface 305 for attraction on the same side constitute two intersecting magnetic pole surfaces. A magnetic conductive plastic upper cover 306 is arranged in front of the sliding magnetic pole surface 304. There is a gap between the magnetic conductive plastic upper cover 306 and the sliding magnetic pole surface 304 to form a groove for the armature hook to be embedded, and a magnetic conductive elastic member 307 for contacting the armature hook is arranged in the groove. The side end surface of the second bending portion is used as the magnetic pole surface 305 for attraction. The sliding magnetic pole surface 304 and the magnetic pole surface 305 for attraction on the same side constitute two intersecting magnetic pole surfaces.

[0051] See also Figure 4 As shown, the left armature hook unit further includes a left front partition plate 4c and a left rear partition plate 4d which can be spliced ​​together front and back.

[0052] A left front vertical hook guide rail 4c1 for the left front vertical hook 6a1 to slide up and down is arranged on the front side of the left front dividing piece 4c, a left lower hook shaft hole 4c2 and a left lower torsion spring hole 4c3 are provided at the lower portion of the left front dividing piece 4c, and a left lower hook rotating shaft 4d2 capable of cooperating with the left lower hook shaft hole 4c2 and a left lower torsion spring rotating shaft 4d3 capable of cooperating with the left lower torsion spring hole 4c3 are provided at the lower portion of the left rear dividing piece 4d. The lower left armature hook 4a1 and its lower left return torsion spring 4a3 are located on the front side of the left front dividing piece 4c and on the left side of the left front vertical hook guide rail 4c1. The shaft hole portion of the lower left armature hook 4a1 is rotationally connected to the lower left hook shaft 4d2 after passing through the lower left hook shaft hole 4c2. The lower end of the lower left return torsion spring 4a3 is rotationally connected to the lower left torsion spring shaft 4d3 after passing through the lower left torsion spring hole 4c3. The upper end of the lower left return torsion spring 4a3 is hooked with the left side of the middle part of the lower left armature hook 4a1. The hook tip of the lower left armature hook 4a1 can keep extending rightward into the left front vertical hook guide rail 4c1 under the action of the restoring force of the lower left return torsion spring 4a3.

[0053] A left rear vertical hook guide rail 4d1 for the left rear vertical hook 6a2 to slide up and down is arranged on the front of the left rear partition plate 4d, a left upper hook shaft hole 4c4 and a left upper torsion spring hole 4c5 are arranged on the upper portion of the left front partition plate 4c, and a left upper hook rotating shaft 4d4 capable of cooperating with the left upper hook shaft hole 4c4 and a left upper torsion spring rotating shaft 4d5 capable of cooperating with the left upper torsion spring hole 4c5 are arranged on the upper portion of the left rear partition plate 4d. The upper left armature hook 4a2 and its upper left return torsion spring 4a4 are located on the front side of the left rear partition plate 4d and on the left side of the left rear vertical hook guide rail 4d1. The shaft hole portion of the upper left armature hook 4a2 is rotatably connected to the upper left hook shaft 4d4 after passing through the upper left hook shaft hole 4c4. The upper end of the upper left return torsion spring 4a4 is rotatably connected to the upper left torsion spring shaft 4d5 after passing through the upper left torsion spring hole 4c5. The lower end of the upper left return torsion spring 4a4 is hooked with the left side of the middle part of the upper left armature hook 4a2. The hook tip of the upper left armature hook 4a2 can keep extending rightward into the left rear vertical hook guide rail 4d1 under the action of the restoring force of the upper left return torsion spring 4a4.

[0054] The top of the left front separator 4c and the left rear separator 4d are both provided with an upper fixing hole 17, and the bottom of the left front separator 4c and the left rear separator 4d are both provided with a lower fixing hole 18. The left front separator 4c and the left rear separator 4d are assembled front and back through the cooperation of the left lower hook shaft 4d2 and the left lower hook shaft hole 4c2, the cooperation of the left lower torsion spring shaft 4d3 and the left lower torsion spring hole 4c3, the cooperation of the left upper hook shaft 4d4 and the left upper hook shaft hole 4c4, and the cooperation of the left upper torsion spring shaft 4d5 and the left upper torsion spring hole 4c5. The two adjacent left armature hook units are fixed through the cooperation of the corresponding fasteners and the upper fixing hole 17 and the lower fixing hole 18 after assembly.

[0055] See also Figure 5 As shown, the left armature hook unit further includes a right front partition plate 5c and a right rear partition plate 5d which can be assembled together front and back.

[0056] A right front vertical hook guide rail 5c1 for the right front vertical hook 6b1 to slide up and down is arranged on the front side of the right front dividing piece 5c, a right lower hook shaft hole 5c2 and a right lower torsion spring hole 5c3 are provided at the lower portion of the right front dividing piece 5c, and a right lower hook rotating shaft 5d2 capable of cooperating with the right lower hook shaft hole 5c2 and a right lower torsion spring rotating shaft 5d3 capable of cooperating with the right lower torsion spring hole 5c3 are provided at the lower portion of the right rear dividing piece 5d. The lower right armature hook 5a1 and its lower right return torsion spring 5a3 are located on the front side of the right front dividing piece 5c and on the left side of the right front vertical hook guide rail 5c1. The shaft hole portion of the lower right armature hook 5a1 is rotationally connected to the lower right hook shaft 5d2 after passing through the lower right hook shaft hole 5c2. The lower end of the lower right return torsion spring 5a3 is rotationally connected to the lower right torsion spring shaft 5d3 after passing through the lower right torsion spring hole 5c3. The upper end of the lower right return torsion spring 5a3 is hooked with the left side of the middle part of the lower right armature hook 5a1. The hook tip of the lower right armature hook 5a1 can keep extending rightward into the right front vertical hook guide rail 5c1 under the action of the restoring force of the lower right return torsion spring 5a3.

[0057] A right rear vertical hook guide rail 5d1 for the right rear vertical hook 6b2 to slide up and down is arranged on the front of the right rear partition plate 5d, a right upper hook shaft hole 5c4 and a right upper torsion spring hole 5c5 are opened on the upper portion of the right front partition plate 5c, and a right upper hook rotating shaft 5d4 capable of cooperating with the right upper hook shaft hole 5c4 and a right upper torsion spring rotating shaft 5d5 capable of cooperating with the right upper torsion spring hole 5c5 are opened on the upper portion of the right rear partition plate 5d. The upper right armature hook 5a2 and its upper right return torsion spring 4a4 are located on the front side of the right rear partition plate 5d and on the left side of the right rear vertical hook guide rail 5d1. The shaft hole portion of the upper right armature hook 5a2 is rotatably connected to the upper right hook shaft 5d4 after passing through the upper right hook shaft hole 5c4. The upper end of the upper right return torsion spring 4a4 is rotatably connected to the upper right torsion spring shaft 5d5 after passing through the upper right torsion spring hole 5c5. The lower end of the upper right return torsion spring 4a4 is hooked with the left side of the middle part of the upper right armature hook 5a2. The hook tip of the upper right armature hook 5a2 can keep extending to the right into the right rear vertical hook guide rail 5d1 under the action of the restoring force of the upper right return torsion spring 4a4.

[0058] The top of the right front separator 5c and the right rear separator 5d are both provided with an upper fixing hole 17, and the bottom of the right front separator 5c and the right rear separator 5d are both provided with a lower fixing hole 18. The right front separator 5c and the right rear separator 5d are spliced ​​front and back through the cooperation of the right lower hook shaft 5d2 and the right lower hook shaft hole 5c2, the cooperation of the right lower torsion spring shaft 5d3 and the right lower torsion spring hole 5c3, the cooperation of the right upper hook shaft 5d4 and the right upper hook shaft hole 5c4, and the cooperation of the right upper torsion spring shaft 5d5 and the right upper torsion spring hole 5c5. The two adjacent left armature hook units are fixed through the cooperation of the corresponding fasteners and the upper fixing hole 17 and the lower fixing hole 18 after splicing.

[0059] Because the present invention arranges the two electromagnets into a vertically symmetrical structure, the present invention adopts different hook designs for a pair of upper armature hooks and a pair of lower armature hooks.

[0060] See also Figure 5 and Figure 6 As shown, the lower left armature hook 4a1, the upper left armature hook 4a2, the lower right armature hook 5a1 and the upper right armature hook 5a2 have the same structure, including a straight rod portion 401 with a rectangular cross section, a magnetic pole surface sliding contact portion 404, a magnetic pole surface suction contact portion 405, an axial hole portion 402 and a hook tip portion 403. The hook tip portion 403 of the lower left armature hook 4a1 and the lower right armature hook 5a1 and the hook tip portion 403 of the upper left armature hook 4a2 and the upper right armature hook 5a2 adopt different hook designs.

[0061] See also Figure 5 As shown, in the lower left armature hook 4a1, the shaft hole portion 402 is arranged on the left side of the bottom end of the straight rod portion 401 through the pole surface sliding contact portion 404, and the hook tip portion 403 is arranged on the right side of the top end of the straight rod portion 401 through the pole surface attraction contact portion 405, the hook tip portion 403 and the pole surface attraction contact portion 405 are both on the right side of the lower left hook shaft, and the hook tip portion 403 presents a "lifting hook" structure opening toward the upper right.

[0062] See also Figure 5 As shown, in the upper left armature hook 4a2, the shaft hole portion 402 is arranged on the right side of the top end of the straight rod portion 401 through the pole surface sliding contact portion 404, and the hook tip portion 403 is arranged on the right side of the bottom end of the straight rod portion 401 through the pole surface attraction contact portion 405, the hook tip portion 403 and the pole surface attraction contact portion 405 are both on the left side of the upper left hook shaft, and the hook tip portion 403 presents a "lifting hook" structure opening toward the upper right.

[0063] See also Figure 6As shown, in the lower right armature hook 5a1, the shaft hole portion 402 is arranged on the right side of the bottom end of the straight rod portion 401 through the pole surface sliding contact portion 404, and the hook tip portion 403 is arranged on the left side of the top end of the straight rod portion 401 through the pole surface attraction contact portion 405, the hook tip portion 403 and the pole surface attraction contact portion 405 are both on the left side of the lower right hook shaft, and the hook tip portion 403 presents a "lifting hook" structure opening toward the upper left.

[0064] See also Figure 6 As shown, in the upper right armature hook 5a2, the shaft hole portion 402 is arranged on the left side of the top end of the straight rod portion 401 through the pole surface sliding contact portion 404, and the hook tip portion 403 is arranged on the left side of the bottom end of the straight rod portion 401 through the pole surface attraction contact portion 405, the hook tip portion 403 and the pole surface attraction contact portion 405 are both on the right side of the upper left hook shaft, and the hook tip portion 403 presents a "lifting hook" structure opening toward the upper left.

[0065] See also Figure 6 As shown, taking the combination of the upper electromagnet 3b and the upper right armature hook 5a2 as an example, after assembly, the magnetic pole surface sliding contact portion 404 is tightly embedded in the groove formed by the sliding magnetic pole surface 304, the magnetic conductive plastic upper cover 306 and the magnetic conductive elastic member 307, and the magnetic pole surface suction contact portion 405 is laterally aligned with the suction magnetic pole surface 305. When the magnetic pole surface suction contact portion 405 is in contact with the suction magnetic pole surface 305, the three surfaces of the magnetic pole surface sliding contact portion 404 are in contact with the sliding magnetic pole surface 304, the magnetic conductive plastic upper cover 306 and the magnetic conductive elastic member 307, so that the sliding magnetic pole surface 304, the magnetic pole surface sliding contact portion 404, the straight rod portion 401, the magnetic pole surface suction contact portion 405 and the suction magnetic pole surface 305 constitute the closed magnetic circuit.

[0066] The shaft hole portion 402 is located outside the closed magnetic circuit and does not participate in the magnetic conduction path of the closed magnetic circuit. This design not only allows the magnetic pole surface suction contact portion 405 of the armature hook to be aligned with the suction magnetic pole surface 305 of the I-shaped iron core 301 in height position, so that the magnetic pole surface suction contact portion 405 of the armature hook can just be in close contact with the end face of the suction magnetic pole surface 305 of the I-shaped iron core 301 when the magnetic circuit is closed, but also allows the magnetic pole surface sliding contact portion 404 of the armature hook to maintain sliding contact with the sliding magnetic pole surface 304 of the I-shaped iron core 301 when the armature hook rotates around the rotating shaft at a certain angle, thereby maintaining a magnetic circuit connection with low magnetic resistance.

[0067] The magnetic pole end of the armature hook of the present invention can move between three positions: from the static magnetic gap to the dynamic magnetic gap is a section with a larger range, which is achieved by the convex edge of the vertical hook pushing the armature hook to move horizontally when the vertical hook moves upward (using external force to achieve a larger range of displacement); from the dynamic magnetic gap to the closed magnetic circuit position is a section with a smaller range, which is achieved by the electromagnetic force after the electromagnet is energized (using internal force to achieve a smaller range of displacement).

[0068] See also Figure 7 As shown, the pulley block unit also includes a double-layer pulley block groove plate, which is composed of a first clamp 11 and a second clamp 12 spliced ​​together front and back. The front groove plate of the first clamp 11 is provided with three functional sections from top to bottom, namely, a double-layer lower pulley block upper pulley line groove section, a double-layer lower pulley block pulley slide groove section, and a double-layer lower pulley block lower pulley line groove section; the back groove plate of the first clamp 11 is provided with three functional sections from top to bottom, namely, a double-layer upper pulley block upper pulley line groove section, a double-layer upper pulley block pulley slide groove section, and a double-layer upper pulley block lower pulley line groove section.

[0069] The position of the pulley line groove section on the lower pulley block corresponds to that of the pulley line groove section on the upper pulley block, and the thickest pulley block bracket section of the pulley line groove section on the upper pulley block is located at the center of the first clamp 11, while the pulley line groove section on the upper pulley block is located on both sides of the first clamp 11, and they do not conflict in space and can be nested. The pulley line groove section on the lower pulley block corresponds to that of the lower pulley line groove section on the upper pulley block, and the pulley line groove section on the lower pulley block is located on both sides of the first clamp 11, and does not conflict with the pulley block bracket section of the pulley line groove section on the lower pulley block located at the center of the first clamp 11. The pulley line groove section on the upper pulley block and the pulley line groove section on the lower pulley block are designed in an up-and-down offset and stacked manner on both sides, and the pulley line groove section on the upper pulley block has the same thickness as that on the lower pulley block, providing space for the subsequent up-and-down offset installation of the upper pulley block and the lower pulley block.

[0070] The left front vertical hook 6a1 and the right front vertical hook 6b1 are respectively slidably arranged in the left front vertical hook guide rail 4c1 and the right front vertical hook guide rail 5c1, and the double-layer lower pulley block 7a is slidably arranged in the pulley groove section of the double-layer lower pulley block. The two ends of the upper pulley line of the double-layer lower pulley block 7a pass through the upper pulley line groove section of the double-layer lower pulley block and are respectively connected to the bottom ends of the left front vertical hook 6a1 and the right front vertical hook 6b1, and the two ends of the lower pulley line of the double-layer lower pulley block 7a pass through the lower pulley line groove section of the double-layer lower pulley block. After one end is fixed, the other end is connected to the first lead wire joint 13; the left front vertical hook 6a1 and the right front vertical hook 6b1 drive the double-layer lower pulley block 7a to rise and fall in the pulley groove section of the double-layer lower pulley block as the knife is lifted.

[0071] Similarly, the left rear vertical hook 6a2 and the right rear vertical hook 6b2 are respectively slidably arranged in the left rear vertical hook guide rail 4d1 and the right rear vertical hook guide rail 5d1, and the double-layer upper pulley block 7b is slidably arranged in the pulley groove section of the double-layer upper pulley block. The two ends of the upper pulley line of the double-layer upper pulley block 7b pass through the upper pulley line groove section of the double-layer upper pulley block and are respectively connected to the bottom ends of the left rear vertical hook 6a2 and the right rear vertical hook 6b2, and the two ends of the lower pulley line of the double-layer upper pulley block 7b pass through the lower pulley line groove section of the double-layer upper pulley block and one end is fixed, and the other end is connected to the second head line joint 14; the left rear vertical hook 6a2 and the right rear vertical hook 6b2 drive the double-layer upper pulley block 7b to rise and fall in the pulley groove section of the double-layer upper pulley block as the knife is lifted.

[0072] The double-layer pulley block groove plate assembles the double-layer upper pulley block 7b and its upper and lower pulley lines, the double-layer lower pulley block 7a and its upper and lower pulley lines, the left front vertical hook 6a1, the left rear vertical hook 6a2, the right front vertical hook 6b1, the right rear vertical hook 6b2, the first first line joint 13 and the second first line joint 14 into a whole, and fixes them with fasteners. In addition, the double-layer upper pulley block 7b and the double-layer lower pulley block 7a are stacked up and down in the same double-layer pulley block groove plate through the front and rear concave-convex design of the double-layer lower pulley block pulley groove section and the double-layer upper pulley block pulley groove section inside the double-layer pulley block groove plate.

[0073] The front side of the second clamp 12 is designed with a front groove shape that matches the upper pulley line groove section of the lower pulley block, the pulley groove section of the lower pulley block, and the lower pulley line groove section of the lower pulley block on the back side of the first clamp 11, and the back side of the second clamp 12 is designed with a back groove shape that matches the upper pulley line groove section of the upper pulley block, the pulley groove section of the upper pulley block, and the lower pulley line groove section of the upper pulley block on the front side of the first clamp 11.

[0074] The first clip 11 and the second clip 12 are both plastic parts that are injection molded in one step. The front and rear surfaces of the first clip 11 and the second clip 12 are respectively provided with buckles. The rear side surface of the second clip 12 and the front side surface of the first clip 11 can be superimposed and spliced ​​through the corresponding buckles, and the rear side surface of the first clip 11 and the front side surface of the second clip 12 can be superimposed and spliced ​​through the corresponding buckles.

[0075] In addition, positioning notches for judging whether the two are correctly assembled are respectively provided on the lower side end faces of the first clip 11 and the second clip 12. When the first clip 11 and the second clip 12 are assembled facing each other with the correct side groove shape, the positioning notch on the first clip 11 and the positioning notch on the second clip 12 are fitted together front to back.

[0076] Through the above-disclosed concave-convex structural design of the first clamp 11 itself, and the cooperation of the front and rear two second clamps 12, the two groups of the lifting pulley groups are stacked in an up-and-down offset manner on the front and back sides of the first clamp 11, so that two needle selection units can be accommodated in one substrate without increasing the width and thickness of the substrate, that is, the two needle selection units only occupy the same width (35mm) and thickness (5mm) as the original one needle selection unit.

[0077] Due to the unique internal design of the double-layer pulley block groove plate of the present invention, two groups of pulley blocks with the same structure, namely the double-layer upper pulley block 7b and the double-layer lower pulley block 7a, can be accommodated at the same time without increasing the thickness of the groove plate.

[0078] Because the present invention adopts two symmetrically arranged electromagnets and two pairs of upper and lower armature hooks with different hook designs, the front and rear pairs of vertical hooks of the present invention can adopt the same shape, that is, a pair of left front vertical hooks 6a1 and right front vertical hooks 6b1 and a pair of left rear vertical hooks 6a2 and right rear vertical hooks 6b2.

[0079] See also Figure 8 and Fig. 9 As shown, the left front vertical hook 6a1, the left rear vertical hook 6a2, the right front vertical hook 6b1 and the right rear vertical hook 6b2 have the same structure, and all include a rod-shaped body 601, a side ear portion 602 for hooking with the blade of a knife is provided in the middle of the outer side of the rod-shaped body 601, a top hook portion 603 is provided at the top end of the inner side of the rod-shaped body 601, and the hook tip of the top hook portion 603 is close to the inner edge of the rod-shaped body 601, and the hook bottom of the top hook portion 603 is close to the axis of the rod-shaped body 601.

[0080] A convex edge is provided at the upper edge of the inner side of the rod-shaped body 601 and below the top hook 603. When the vertical hook moves upward, the convex edge can laterally push the armature hook on the corresponding side from the static magnetic gap position away from the electromagnet direction to the dynamic magnetic gap position close to the electromagnet direction and keep it at the dynamic magnetic gap position. The convex edge laterally protrudes from the hook tip of the top hook 603. The contour curve of the convex edge is divided into a pushing section 604a located in the upper section and a retaining section 604b located in the lower section. The pushing section 604a is an inclined curve starting from the hook bottom of the top hook 603, and the retaining section 604b is a straight line parallel to the moving direction of the rod-shaped body 601. The pushing section 604a and the retaining section 604b are smoothly connected. In the early stage of the vertical hook's upward movement, the pushing section 604a can generate an outward lateral thrust on the armature hook in contact with it, and in the middle and late stages of the vertical hook's upward movement, the retaining section 604b can exert a retaining force on the armature hook that has generated a lateral displacement.

[0081] The distance from the bottom of the retaining section 604b to the bottom of the top hook 603 is greater than the distance from the hook tip of the top hook 603 to the bottom of the top hook 603. This distance difference is also the distance between the hook tip of the armature hook and the hook tip of the vertical hook in the unhooked state, so it is defined as the unhooking margin, which is a tolerance margin. Figure 8 As shown, Figure 7 D in the middle represents the unhooking margin. Due to the existence of the unhooking margin D, the hook tip of the armature hook does not contact the top hook of the vertical hook. Even if vibration occurs, the top hook of the vertical hook will not catch the hook tip of the armature hook, avoiding the failure of unhooking. The unhooking margin ensures the reliability of the unhooking action under complex working conditions.

[0082] The length of the retaining section 604b of the convex edge corresponds to the tolerance range of the jacquard machine knife lifting height allowed by the needle selection device to which it belongs. Within this tolerance range, the armature hook in contact with the convex edge remains in the dynamic magnetic gap position. The retaining section 604b is actually a straight section. In this section of the retaining section 604b, the armature hook in contact with it will not have lateral displacement, but will remain in the dynamic magnetic gap position. The dynamic magnetic gap is the distance between the magnetic pole surface of the armature hook and the magnetic pole surface of the electromagnet under the action of the convex edge, and the value range of the dynamic magnetic gap is 0 to 0.3 mm.

[0083] A section of limiting convex edge 605 is provided along the edge of the middle and lower part of the inner side of the rod-shaped body 601, which is used to fit into the corresponding groove on the first clamp 11 and ensure that the vertical hook does not produce lateral displacement, and the top of the limiting convex edge 605 is connected in a parallel straight line with the bottom end of the convex edge retaining section 604b. Since the vertical hook is set in the corresponding vertical hook guide rail, the vertical hook needs to have a rod-shaped body 601 that cooperates with it to ensure that there is no lateral displacement when the vertical hook moves up and down in the vertical hook guide rail. Since the dynamic magnetic gap is generated by the convex edge, it has certain precision requirements. Therefore, in order to ensure precision, the vertical hook movement trajectory must be stable, and when the vertical hook moves up and down, it must be ensured that there is no other lateral displacement, otherwise the size of the dynamic magnetic gap cannot be controlled.

[0084] At least one damping groove 606 is provided between the side ear 602 and the rod-shaped body 601 to block the vibration of the knife lifting, so as to prevent the vibration of the knife lifting from being transmitted to the top hook 603 through the side ear 602, thereby improving the reliability of the operation. The number of the damping grooves 606 can be designed according to the requirements, for example, it can be designed as follows: Figure 8 The single slot method shown can also be designed as Fig. 9 Double slot method shown.

[0085] The hooking method of the left front vertical hook 6a1 and the left lower armature hook 4a1, the hooking method of the right front vertical hook 6b1 and the right lower armature hook 5a1, the hooking method of the left rear vertical hook 6a2 and the left upper armature hook 4a2, and the hooking method of the right rear vertical hook 6b2 and the right upper armature hook 5a2 are consistent, and the principle is:

[0086] When the vertical hook moves upward, the push section of the convex edge on the vertical hook pushes the armature hook in contact with it to rotate around the corresponding rotating shaft, and the magnetic pole surface suction contact part 405 of the armature hook moves from the static magnetic gap position away from the magnetic pole surface 305 of the electromagnet to the direction close to the magnetic pole surface 305 of the electromagnet, and the magnetic pole surface suction contact part 405 of the armature hook is stopped at the dynamic magnetic gap position close to the magnetic pole surface 305 of the electromagnet through the retaining section of the convex edge. If the coil of the electromagnet is energized at this time, the electromagnetic force will attract the magnetic pole surface suction contact part 405 of the armature hook to the closed magnetic circuit position, and the retaining section of the convex edge will not generate the force of the lateral displacement of the armature hook. At this time, the reset torsion spring is compressed, so that the hook tip of the armature hook is separated from the top hook part of the vertical hook, and it is in a decoupled state. Since the electromagnetic force is greater than the elastic force of the reset torsion spring, when the vertical hook moves downward, even without the effect of the convex edge on the vertical hook, the armature hook will be kept in the closed magnetic circuit position by the electromagnetic force. When the vertical hook continues to move down until its hook tip is opposite to the hook tip of the armature hook, the existence of the unhooking margin ensures that the vertical hook can smoothly move down to the bottom of the armature hook to achieve reliable unhooking. This is a new unhooking technology that uses the unhooking margin parameters in the design stage to ensure the reliability of action under complex working conditions.

[0087] When the vertical hook moves downward and the coil of the electromagnet is not energized, the electromagnet's magnetic pole surface 305 does not generate an adsorption force on the magnetic pole surface attraction contact portion 405 of the armature hook, and the reset torsion spring gives the armature hook an outward elastic force. When the vertical hook moves downward until its top hook portion is aligned with the hook tip portion of the armature hook, the reset torsion spring obtains a release space, and rotates the magnetic pole surface attraction contact portion 405 of the armature hook from the closed magnetic circuit position directly through the dynamic magnetic gap position to the static magnetic gap position. At this time, the hook tip portion of the armature hook is just stuck in the top hook portion of the vertical hook, so that the hook tip portion of the armature hook is hooked with the top hook portion of the vertical hook, forming a hooked state.

[0088] See also Figure 1 As shown, the mounting frame is composed of a left front mounting plate 901, a left rear mounting plate 902, a right front mounting plate 903 and a right rear mounting plate 904. The left armature hook plate is fixed to the left load-bearing fixed shaft 15 through the assembled upper fixing hole 17, and the right armature hook plate is fixed to the right load-bearing fixed shaft 16 through the assembled upper fixing hole 17. The driving printed circuit board 10 is inserted into the slot on the top of the electromagnet plate 3.

[0089] The left front mounting plate 901 is attached to the front end surface of the assembled left armature hook plate 4, and the top end of the left front mounting plate 901 is fixedly connected to the front left side surface of the driving printed circuit board 10, and the bottom end of the left front mounting plate 901 is fixedly connected to the front left side surface of the assembled pulley assembly plate 7.

[0090] The left rear mounting plate 902 is attached to the rear end surface of the assembled left armature hook plate 4, and the top end of the left rear mounting plate 902 is fixedly connected to the rear end left side surface of the driving printed circuit board 10, and the bottom end of the left rear mounting plate 902 is fixedly connected to the rear end left side surface of the assembled pulley assembly plate 7.

[0091] The right front mounting plate 903 is attached to the front end surface of the assembled right armature hook plate 5, and the top end of the right front mounting plate 903 is fixedly connected to the front right side surface of the driving printed circuit board 10, and the bottom end of the right front mounting plate 903 is fixedly connected to the front right side surface of the assembled pulley assembly plate 7.

[0092] The right rear mounting plate 904 is attached to the rear end surface of the assembled right armature hook plate 5, and the top end of the right rear mounting plate 904 is fixedly connected to the rear end right side surface of the driving printed circuit board 10, and the bottom end of the right rear mounting plate 904 is fixedly connected to the rear end right side surface of the assembled pulley plate 7; positioning mounting parts for cooperating with the needle box are installed on both sides of the pulley plate 7.

[0093] To facilitate installation and maintenance, different mounting frame solutions may be provided, for example, the left front mounting plate 901 and the right front mounting plate 903 may be combined into one component, and the left rear mounting plate 902 and the right rear mounting plate 904 may be combined into one component, which will not be described in detail.

[0094] The number of the electromagnet unit, the pulley unit, the left armature hook unit, and the right armature hook unit is a larger multiple of 8. Figure 1 and Figure 2 As shown, for example, there may be 8×8 units, thereby forming a large assembly of a 128-needle high-density needle selection device.

[0095] See also Figure 1 As shown, Figure 1 The electromagnet plate composed of 64 electromagnet units, the left armature hook plate composed of 64 left armature hook units and the right armature hook plate composed of 64 right armature hook units are shown. Such a separate design can isolate vibration. The vibration mainly comes from the frame and the knife lifting, and the knife lifting vibration is transmitted to the needle selection device through the vertical hook. The mounting frame of the present invention not only provides the positioning, installation and fixation of the left armature hook plate, the right armature hook plate, the drive printed circuit board and the electromagnet plate, but also should be designed and fixed in conjunction with the needle box of the jacquard machine.

[0096] See also Figure 2 As shown, Figure 2 The figure shows a pulley block plate consisting of 64 pulley block units. This is an independent component, completely separated from the electromagnet plate. The pulley block plate can be positioned and installed in the needle box of the jacquard machine through the mounting parts. Under normal circumstances, the pulley part of the electronic jacquard machine rarely fails in the first 1 to 2 years of operation. The separate large component design makes the initial maintenance work simple and fast, because only the electromagnet part needs to be disassembled, and the pulley part that does not fail can remain unchanged. The pulley part is connected to the installation wire, so the workload of disassembly and assembly during use is relatively large.

[0097] From the manufacturing aspect, the clip is a relatively long plastic sheet structure. After separation, there are at least two advantages: first, the electromagnet part is removed, the overall size is shortened, the mold cost is reduced, and the manufacturing difficulty and cost are reduced; second, the clip after separation is not subjected to force in the length direction, that is, the direction of the knife movement, and there are no high requirements for the strength and rigidity of the clip. As long as it has good wear resistance and self-lubricating properties, it can be competent. A material formula with good elasticity and toughness can be used, so that it is not easy to crack during manufacturing, assembly, and use. In addition, the pulley line of this scheme moves in the wire groove formed by the clip, which is a relatively closed environment, which is beneficial for preventing the contamination of lint and dust during the weaving process.

[0098] Such a large assembly solution is more conducive to the design of printed circuit boards. The existing solution requires many small boards, which are connected by cables and connectors. A large number of cables and connectors increase the unreliability of the circuit. The present invention concentrates a large number of needle selection devices on a printed circuit board drive, which reduces costs and improves reliability.

[0099] It should be noted that the technical solution of the present invention is not limited to the production of a large assembly of a 128-needle high-density needle selection device, but can also be used to produce a large assembly of a needle selection device with a higher density.

[0100] The present invention also provides an electronic jacquard machine adopting the above-mentioned high-density separated needle selection device large assembly.

[0101] In summary, the present invention provides a solution for a large assembly of a high-density separated needle selection device, which breaks the current composition scheme of functional sheets and separates the functional sheets into several components. These components themselves cannot realize the function of the needle selection device, but by combining a large number of these components together and installing them on the needle box, a needle selection device assembly with a large number of needles can be realized, thereby achieving positive effects such as facilitating production, reducing costs, improving performance, improving reliability, and facilitating maintenance.

[0102] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-density separation type needle selection device large assembly, characterized in that: It comprises an electromagnet plate (3) formed by stacking 8n electromagnet units front and back, a pulley block plate (7) formed by stacking 8n pulley block units front and back, a left armature hook plate (4) formed by stacking 8n left armature hook units front and back, a right armature hook plate (5) formed by stacking 8n right armature hook units front and back, a mounting frame and a driving printed circuit board (10), wherein n is a positive integer; the electromagnet plate, the left armature hook plate, the right armature hook plate and the driving printed circuit board (10) are assembled into a whole by the mounting frame and then mounted on the top of the electromagnet plate; each of the electromagnet units is mounted on the top of the corresponding pulley block unit by adopting a longitudinal separation design, and each of the left armature hook unit and each of the right armature hook unit are respectively mounted on the left and right sides of the corresponding electromagnet unit by adopting a lateral separation design; The electromagnet unit comprises an upper electromagnet (3b) and a lower electromagnet (3a); the left armature hook unit comprises a left upper armature hook (4a2) for cooperating with the left magnetic pole surface of the upper electromagnet (3b), a rotating shaft, a return torsion spring, and a left lower armature hook (4a1) for cooperating with the left magnetic pole surface of the lower electromagnet (3a), a rotating shaft, and a return torsion spring; the right armature hook unit comprises a right upper armature hook (5a2) for cooperating with the right magnetic pole surface of the upper electromagnet (3b), a rotating shaft, a return torsion spring, and a right lower armature hook (5a1) for cooperating with the right magnetic pole surface of the lower electromagnet (3a). and its rotating shaft and reset torsion spring; the pulley block unit comprises a double-layer upper pulley block (7b) and a double-layer lower pulley block (7a); the two ends of the upper pulley line of the double-layer upper pulley block (7b) are upwardly connected to a left rear vertical hook (6a2) for cooperating with the left upper armature hook (4a2) and a right rear vertical hook (6b2) for cooperating with the right upper armature hook (5a2), respectively; the two ends of the upper pulley line of the double-layer lower pulley block (7a) are upwardly connected to a left front vertical hook (6a1) for cooperating with the left lower armature hook (4a1) and a right front vertical hook (6b1) for cooperating with the right lower armature hook (5a1).

2. The high-density separation needle selection device large assembly according to claim 1 is characterized in that: The electromagnet unit also includes an electromagnet frame (1), the upper electromagnet (3b) and the lower electromagnet (3a) are respectively mounted at the upper and lower ends of the electromagnet frame (1), the upper electromagnet (3b) and the lower electromagnet (3a) are symmetrically arranged in the upper and lower directions, a printed circuit board slot plate (2) is arranged at the top of the electromagnet frame (1), a printed circuit board slot (201) is provided at the top of the printed circuit board slot plate (2), coil pins (202) respectively connected to the coil of the upper electromagnet (3b) and the coil of the lower electromagnet (3a) are arranged on the left and right sides of the printed circuit board slot plate (2), a lower buckle (101) is arranged on the front of the middle part of the electromagnet frame (1), and the electromagnet (3b) and the lower electromagnet (3a) are respectively connected to the upper electromagnet (3b) and the lower electromagnet (3a) coils. A lower slot is provided on the back of the middle part of the frame (1), and the lower snap (101) corresponds to the lower slot in front and back positions and matches in size; an upper snap (203) is provided on the front of the printed circuit board slot plate (2), and an upper slot is provided on the back of the printed circuit board slot plate (2), and the upper snap (203) corresponds to the upper slot in front and back positions and matches in size; a through hole (102) is provided in the middle of the electromagnet frame (1); two adjacent electromagnet frames (1) are spliced ​​together front and back through the cooperation of the upper snap (203) and the lower slot and the cooperation of the lower snap (101) and the lower slot, and are fixed by the cooperation of corresponding fasteners and the through hole (102) after splicing.

3. The high-density separation needle selection device large assembly according to claim 1 is characterized in that: The upper electromagnet (3b) and the lower electromagnet (3a) have the same structure, and are both formed by winding enameled wire around an I-shaped iron core (301); a cross beam at one end of the I-shaped iron core (301) is a long magnetic pole (302), and a cross beam at the other end of the I-shaped iron core (301) is a short magnetic pole (303); the left and right ends of the long magnetic pole (302) have a first bending portion bent backwards, and the left and right ends of the short magnetic pole (303) have a second bending portion bent forwards, and the first bending portion and the second bending portion are in a front-to-back offset form, and the offset amplitude is equal to the thickness of the armature hook; the first The concave surface of the bending portion serves as a sliding magnetic pole surface (304), and the side end surface of the second bending portion serves as an attraction magnetic pole surface (305). The sliding magnetic pole surface (304) and the attraction magnetic pole surface (305) located on the same side constitute two intersecting magnetic pole surfaces. A magnetic conductive plastic upper cover (306) is arranged in front of the sliding magnetic pole surface (304), and there is a distance between the magnetic conductive plastic upper cover (306) and the sliding magnetic pole surface (304) to form a groove for facilitating the embedding of the armature hook, and a magnetic conductive elastic member (307) for contacting the armature hook is arranged in the groove.

4. The high-density separation needle selection device large assembly according to claim 1 is characterized in that: The left armature hook unit also includes a left front partition (4c) and a left rear partition (4d) that can be assembled together front and back; a left front vertical hook guide rail (4c1) for the left front vertical hook (6a1) to slide up and down is arranged on the front of the left front partition (4c); a left lower hook shaft hole (4c2) and a left lower torsion spring hole (4c3) are provided at the lower part of the left front partition (4c); a left lower hook rotating shaft (4d2) that can cooperate with the left lower hook shaft hole (4c2) and a left lower torsion spring rotating shaft (4d3) that can cooperate with the left lower torsion spring hole (4c3) are provided at the lower part of the left rear partition (4d); the left lower armature hook (4a1) and its left lower return torsion spring (4a3) are located on the left front partition (4c). The front side of the left lower armature hook (4a1) is located on the left side of the left front vertical hook guide rail (4c1); the shaft hole portion of the left lower armature hook (4a1) is rotationally connected to the left lower hook shaft (4d2) after passing through the left lower hook shaft hole (4c2); the lower end of the left lower return torsion spring (4a3) is rotationally connected to the left lower torsion spring shaft (4d3) after passing through the left lower torsion spring hole (4c3); the upper end of the left lower return torsion spring (4a3) is hooked with the left side of the middle part of the left lower armature hook (4a1); the hook tip of the left lower armature hook (4a1) can be kept extending to the right into the left front vertical hook guide rail (4c1) under the action of the restoring force of the left lower return torsion spring (4a3); the front side of the left rear partition plate (4d) is provided with a useful A left rear vertical hook guide rail (4d1) slides up and down on the left rear vertical hook (6a2); a left upper hook shaft hole (4c4) and a left upper torsion spring hole (4c5) are provided on the upper part of the left front partition (4c); a left upper hook rotating shaft (4d4) capable of cooperating with the left upper hook shaft hole (4c4) and a left upper torsion spring rotating shaft (4d5) capable of cooperating with the left upper torsion spring hole (4c5) are provided on the upper part of the left rear partition (4d); the left upper armature hook (4a2) and its left upper return torsion spring (4a4) are located on the front side of the left rear partition (4d) and on the left side of the left rear vertical hook guide rail (4d1); the shaft hole portion of the left upper armature hook (4a2) and the shaft hole portion of the left upper armature hook (4a2) after passing through the left upper hook shaft hole (4c4) are connected to each other. The upper left hook shaft (4d4) is rotatably connected, the upper end of the upper left return torsion spring (4a4) is rotatably connected to the upper left torsion spring shaft (4d5) after passing through the upper left torsion spring hole (4c5), the lower end of the upper left return torsion spring (4a4) is hooked with the left middle part of the upper left armature hook (4a2), and the hook tip of the upper left armature hook (4a2) can be kept extending to the right into the left rear vertical hook guide rail (4d1) under the action of the restoring force of the upper left return torsion spring (4a4); the tops of the left front separator (4c) and the left rear separator (4d) are both provided with upper fixing holes (17), and the bottoms of the left front separator (4c) and the left rear separator (4d) are both provided with lower fixing holes (18);The left front partition plate (4c) and the left rear partition plate (4d) are spliced ​​front and back by the cooperation between the left lower hook shaft (4d2) and the left lower hook shaft hole (4c2), the cooperation between the left lower torsion spring shaft (4d3) and the left lower torsion spring hole (4c3), the cooperation between the left upper hook shaft (4d4) and the left upper hook shaft hole (4c4), and the cooperation between the left upper torsion spring shaft (4d5) and the left upper torsion spring hole (4c5); and the two adjacent left armature hook units are fixed by the cooperation between the corresponding fasteners and the upper fixing hole (17) and the lower fixing hole (18) after splicing; The left armature hook unit also includes a right front separator (5c) and a right rear separator (5d) that can be assembled together front and back; a right front vertical hook guide rail (5c1) for the right front vertical hook (6b1) to slide up and down is arranged on the front of the right front separator (5c); a right lower hook shaft hole (5c2) and a right lower torsion spring hole (5c3) are provided at the lower part of the right front separator (5c); a right lower hook rotating shaft (5d2) that can cooperate with the right lower hook shaft hole (5c2) and a right lower torsion spring rotating shaft (5d3) that can cooperate with the right lower torsion spring hole (5c3) are provided at the lower part of the right rear separator (5d); the right lower armature hook (5a1) and its right lower return torsion spring (5a3) are located on the right front separator (5c). The front side of the right lower armature hook (5a1) is located on the left side of the right front vertical hook guide rail (5c1); the shaft hole portion of the right lower armature hook (5a1) is rotationally connected with the right lower hook shaft (5d2) after passing through the right lower hook shaft hole (5c2); the lower end of the right lower return torsion spring (5a3) is rotationally connected with the right lower torsion spring shaft (5d3) after passing through the right lower torsion spring hole (5c3); the upper end of the right lower return torsion spring (5a3) is hooked with the left side of the middle part of the right lower armature hook (5a1); the hook tip of the right lower armature hook (5a1) can keep extending to the right into the right front vertical hook guide rail (5c1) under the action of the restoring force of the right lower return torsion spring (5a3); the front side of the right rear partition plate (5d) is provided with a useful A right rear vertical hook guide rail (5d1) slides up and down on the right rear vertical hook (6b2); a right upper hook shaft hole (5c4) and a right upper torsion spring hole (5c5) are provided on the upper portion of the right front partition plate (5c); a right upper hook rotating shaft (5d4) capable of cooperating with the right upper hook shaft hole (5c4) and a right upper torsion spring rotating shaft (5d5) capable of cooperating with the right upper torsion spring hole (5c5) are provided on the upper portion of the right rear partition plate (5d); the right upper armature hook (5a2) and its right upper return torsion spring (4a4) are located on the front side of the right rear partition plate (5d) and on the left side of the right rear vertical hook guide rail (5d1); the shaft hole portion of the right upper armature hook (5a2) and the shaft hole portion of the right upper armature hook (5a2) after passing through the right upper hook shaft hole (5c4) are connected to each other. The upper right hook shaft (5d4) is rotatably connected, the upper end of the upper right return torsion spring (4a4) is rotatably connected to the upper right torsion spring shaft (5d5) after passing through the upper right torsion spring hole (5c5), the lower end of the upper right return torsion spring (4a4) is hooked with the left side of the middle part of the upper right armature hook (5a2), and the hook tip of the upper right armature hook (5a2) can be kept extending to the right into the right rear vertical hook guide rail (5d1) under the action of the restoring force of the upper right return torsion spring (4a4); the tops of the right front separator (5c) and the right rear separator (5d) are both provided with upper fixing holes (17), and the bottoms of the right front separator (5c) and the right rear separator (5d) are both provided with lower fixing holes (18);The right front separator (5c) and the right rear separator (5d) are assembled front and back by the cooperation of the right lower hook shaft (5d2) and the right lower hook shaft hole (5c2), the right lower torsion spring shaft (5d3) and the right lower torsion spring hole (5c3), the right upper hook shaft (5d4) and the right upper hook shaft hole (5c4), and the right upper torsion spring shaft (5d5) and the right upper torsion spring hole (5c5); and the two adjacent left armature hook units are fixed by the cooperation of the corresponding fasteners and the assembled upper fixing hole (17) and the lower fixing hole (18). ; 5. The high-density separation needle selection device large assembly according to claim 1, characterized in that: The lower left armature hook (4a1), the upper left armature hook (4a2), the lower right armature hook (5a1) and the upper right armature hook (5a2) all comprise a straight rod portion (401) with a rectangular cross section, a magnetic pole surface sliding contact portion (404), a magnetic pole surface suction contact portion (405), an axial hole portion (402) and a hook tip portion (403); In the lower left armature hook (4a1), the shaft hole portion (402) is arranged on the left side of the bottom end of the straight rod portion (401) through the magnetic pole surface sliding contact portion (404), and the hook tip portion (403) is arranged on the right side of the top end of the straight rod portion (401) through the magnetic pole surface suction contact portion (405). The hook tip portion (403) and the magnetic pole surface suction contact portion (405) are both on the right side of the lower left hook shaft, and the hook tip portion (403) is in the form of a "lifting hook" structure that opens to the upper right. When the lower electromagnet (3a) is energized, the magnetic pole surface sliding contact portion (404) and the magnetic pole surface suction contact portion (405) can contact the two magnetic pole surfaces on the left side of the lower electromagnet (3a) to form a lower left closed magnetic circuit, and the shaft hole portion (402) is located outside the lower left closed magnetic circuit. In the upper left armature hook (4a2), the shaft hole portion (402) is arranged on the right side of the top end of the straight rod portion (401) through the magnetic pole surface sliding contact portion (404), and the hook tip portion (403) is arranged on the right side of the bottom end of the straight rod portion (401) through the magnetic pole surface suction contact portion (405), the hook tip portion (403) and the magnetic pole surface suction contact portion (405) are both on the left side of the upper left hook shaft, and the hook tip portion (403) is in the form of a "lifting hook" structure opening toward the upper right; when the upper electromagnet (3b) is energized, the magnetic pole surface sliding contact portion (404) and the magnetic pole surface suction contact portion (405) can contact the two magnetic pole surfaces on the left side of the upper electromagnet (3b) to form an upper left closed magnetic circuit, and the shaft hole portion (402) is located outside the upper left closed magnetic circuit; In the lower right armature hook (5a1), the shaft hole portion (402) is arranged on the right side of the bottom end of the straight rod portion (401) through the magnetic pole surface sliding contact portion (404), and the hook tip portion (403) is arranged on the left side of the top end of the straight rod portion (401) through the magnetic pole surface suction contact portion (405). The hook tip portion (403) and the magnetic pole surface suction contact portion (405) are both on the left side of the lower right hook shaft, and the hook tip portion (403) is in the form of a "lifting hook" structure that opens toward the upper left. When the lower electromagnet (3a) is energized, the magnetic pole surface sliding contact portion (404) and the magnetic pole surface suction contact portion (405) can contact the two magnetic pole surfaces on the right side of the lower electromagnet (3a) to form a lower right closed magnetic circuit, and the shaft hole portion (402) is located outside the lower right closed magnetic circuit. In the upper right armature hook (5a2), the shaft hole portion (402) is arranged on the left side of the top end of the straight rod portion (401) through the magnetic pole surface sliding contact portion (404), and the hook tip portion (403) is arranged on the left side of the bottom end of the straight rod portion (401) through the magnetic pole surface suction contact portion (405). The hook tip portion (403) and the magnetic pole surface suction contact portion (405) are both on the right side of the upper left hook shaft, and the hook tip portion (403) is in the form of a "lifting hook" structure opening toward the upper left. When the upper electromagnet (3b) is energized, the magnetic pole surface sliding contact portion (404) and the magnetic pole surface suction contact portion (405) can contact the two magnetic pole surfaces on the right side of the upper electromagnet (3b) to form an upper right closed magnetic circuit, and the shaft hole portion (402) is located outside the upper right closed magnetic circuit.

6. The high-density separation needle selection device large assembly according to claim 1, characterized in that: The pulley block unit further comprises a double-layer pulley block groove plate, the double-layer pulley block groove plate being formed by front and rear splicing of a first clamp (11) and a second clamp (12), wherein the front groove plate of the first clamp (11) is provided with three functional sections from top to bottom, namely, a double-layer lower pulley block upper pulley line groove section, a double-layer lower pulley block pulley slide groove section, and a double-layer lower pulley block lower pulley line groove section; the back groove plate of the first clamp (11) is provided with three functional sections from top to bottom, namely, a double-layer upper pulley block upper pulley line groove section, a double-layer upper pulley block pulley slide groove section, and a double-layer upper pulley block lower pulley line groove section; The upper pulley line groove section of the lower pulley block corresponds to the pulley line groove section of the upper pulley block in front and back positions, and the thickest pulley block bracket section of the pulley line groove section of the upper pulley block is located at the center position of the first clamping piece (11), and the upper pulley line groove section of the lower pulley block is located at both sides of the first clamping piece (11), and there is no conflict in space and they can be nested; the pulley line groove section of the lower pulley block corresponds to the lower pulley line groove section of the upper pulley block in front and back positions, and the lower pulley line groove section of the upper pulley block is located at both sides of the first clamping piece (11), and there is no conflict with the pulley block bracket section of the pulley line groove section of the lower pulley block located at the center position of the first clamping piece (11); the pulley line groove section of the upper pulley block and the pulley line groove section of the lower pulley block are designed in an up-and-down offset stacking manner on the front and back sides, and the pulley line groove section of the upper pulley block and the pulley line groove section of the lower pulley block have the same thickness; The left front vertical hook (6a1) and the right front vertical hook (6b1) are respectively slidably arranged on the left and right sides of the lower electromagnet (3a) up and down, and the double-layer lower pulley block (7a) is slidably arranged on the pulley groove section of the double-layer lower pulley block. The two ends of the upper pulley line of the double-layer lower pulley block (7a) are respectively connected to the bottom ends of the left front vertical hook (6a1) and the right front vertical hook (6b1) after passing through the upper pulley line groove section of the double-layer lower pulley block, and the two ends of the lower pulley line of the double-layer lower pulley block (7a) are fixed at one end after passing through the lower pulley line groove section of the double-layer lower pulley block, and the other end is connected to the first head line joint (13); the left front vertical hook (6a1) and the right front vertical hook (6b1) drive the double-layer lower pulley block (7a) to rise and fall in the pulley groove section of the double-layer lower pulley block as the knife is lifted; The left rear vertical hook (6a2) and the right rear vertical hook (6b2) are respectively slidably arranged on the left and right sides of the upper electromagnet (3b) up and down, and the double-layer upper pulley block (7b) is slidably arranged on the pulley groove section of the double-layer upper pulley block up and down, and the two ends of the upper pulley line of the double-layer upper pulley block (7b) are respectively connected to the bottom ends of the left rear vertical hook (6a2) and the right rear vertical hook (6b2) after passing through the upper pulley line groove section of the double-layer upper pulley block, and the two ends of the lower pulley line of the double-layer upper pulley block (7b) are fixed at one end and connected to the second head line joint (14) after passing through the lower pulley line groove section of the double-layer upper pulley block; the left rear vertical hook (6a2) and the right rear vertical hook (6b2) drive the double-layer upper pulley block (7b) to rise and fall in the pulley groove section of the double-layer upper pulley block as the knife is lifted; The double-layer pulley block groove plate assembles the double-layer upper pulley block (7b) and its upper and lower pulley lines, the double-layer lower pulley block (7a) and its upper and lower pulley lines, the left front vertical hook (6a1), the left rear vertical hook (6a2), the right front vertical hook (6b1), the right rear vertical hook (6b2), the first first line joint (13) and the second first line joint (14) into a whole, and fixes them with fasteners; and the double-layer upper pulley block (7b) and the double-layer lower pulley block (7a) are stacked up and down in the same plane through the front and rear concave-convex design of the double-layer lower pulley block pulley groove section and the double-layer upper pulley block pulley groove section inside the double-layer pulley block groove plate.

7. The high-density separation needle selection device large assembly according to claim 1 is characterized in that: The left front vertical hook (6a1), the left rear vertical hook (6a2), the right front vertical hook (6b1) and the right rear vertical hook (6b2) have the same structure, and all include a rod-shaped body (601). The middle part of the outer side of the rod-shaped body (601) is provided with a side ear part (602) for hooking with the blade of a knife. The top end of the inner side of the rod-shaped body (601) is provided with a top hook part (603), and the hook tip of the top hook part (603) is close to the inner edge of the rod-shaped body (601), and the hook bottom of the top hook part (603) is close to the inner edge of the rod-shaped body (601). The rod-shaped body (601) is provided with an upper edge on the inner side of the rod-shaped body (601) and a convex edge below the top hook portion (603). When the vertical hook moves upward, the convex edge can push the armature hook on the corresponding side laterally from a static magnetic gap position away from the electromagnet to a dynamic magnetic gap position close to the electromagnet and keep it in the dynamic magnetic gap position. The convex edge protrudes laterally from the hook tip of the top hook portion (603). The contour curve of the convex edge is divided into a pushing section (604a) located in the upper section and a holding section (604b) located in the lower section. The pushing section (604a) is an inclined curve starting from the bottom of the top hook (603); the holding section (604b) is a straight line parallel to the moving direction of the rod-shaped body (601); the pushing section (604a) and the holding section (604b) are smoothly connected; the distance from the bottom of the holding section (604b) to the bottom of the top hook (603) is greater than the distance from the hook tip of the top hook (603) to the bottom of the top hook (603); the length of the holding section (604b) of the convex edge is The needle selection device to which it belongs should be capable of controlling the tolerance range of the jacquard machine's knife lifting height allowed by the needle selection device to which it belongs; a section of limiting convex edge (605) is provided along the edge of the middle and lower inner sides of the rod-shaped body (601) for engaging with the corresponding groove on the first clamp (11) and ensuring that the vertical hook does not produce lateral displacement, and the top end of the limiting convex edge (605) is connected in a parallel straight line to the bottom end of the convex edge retaining section (604b); at least one shock-absorbing groove (606) for isolating the vibration of the knife lifting is provided between the side ear (602) and the rod-shaped body (601).

8. The high-density separation type needle selection device large assembly according to claim 1, characterized in that: The mounting frame is composed of a left front mounting plate (901), a left rear mounting plate (902), a right front mounting plate (903) and a right rear mounting plate (904); the left front mounting plate (901) is attached to the front end surface of the assembled left armature hook plate (4), and the top end of the left front mounting plate (901) is fixedly connected to the front left side surface of the driving printed circuit board (10), and the bottom end of the left front mounting plate (901) is fixedly connected to the front left side surface of the assembled pulley block plate (7); the left rear mounting plate (902) is attached to the rear end surface of the assembled left armature hook plate (4), and the top end of the left rear mounting plate (902) is fixedly connected to the rear left side surface of the driving printed circuit board (10), and the bottom end of the left rear mounting plate (902) is fixedly connected to the assembled pulley block plate (7). ) is fixedly connected to the rear left side of the right armature hook plate (5) after assembly; the right front mounting plate (903) is attached to the front end face of the right armature hook plate (5) after assembly, and the top end of the right front mounting plate (903) is fixedly connected to the front right side face of the driving printed circuit board (10), and the bottom end of the right front mounting plate (903) is fixedly connected to the front right side face of the pulley block plate (7) after assembly; the right rear mounting plate (904) is attached to the rear end face of the right armature hook plate (5) after assembly, and the top end of the right rear mounting plate (904) is fixedly connected to the rear right side face of the driving printed circuit board (10), and the bottom end of the right rear mounting plate (904) is fixedly connected to the rear right side face of the pulley block plate (7) after assembly; positioning mounting parts for cooperating with the needle box are installed on both sides of the pulley block plate (7).

9. The high-density separation type needle selection device large assembly according to claim 1, characterized in that: The number of the electromagnet unit, the pulley block unit, the left armature hook unit, and the right armature hook unit is a larger multiple of 8, and the larger multiple is n≥8.

10. An electronic jacquard machine using the large assembly of the high-density separated needle selection device as described in any one of claims 1 to 9.

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