Double-layer pulley block trough plate, needle selection device provided with trough plate and jacquard machine provided with trough plate

Abstract

The invention discloses a double-layer pulley block trough plate and a needle selection device and a jacquard machine equipped with the trough plate. The double-layer pulley block trough plate comprises a second substrate, a first substrate and a second substrate which are spliced in sequence or the first substrate, the second substrate and the first substrate which are spliced in sequence. The right groove profile of the second substrate and the left groove profile of the first substrate are spliced to form an upper pulley block vertical hook sliding groove section, an upper pulley block upper pulley line groove section, an upper pulley block pulley sliding groove section and an upper pulley block lower pulley line groove section. The right groove profile of the first substrate and the left groove profile of the second substrate are spliced to form a lower pulley block vertical hook sliding groove section, a lower pulley block upper pulley line groove section, a lower pulley block pulley sliding groove section and a lower pulley block lower pulley line groove section. The installation density of the pulley assembly is improved, and two sets of pulley assemblies are installed under the condition that the thickness of an original pulley assembly is kept unchanged. The groove plate is good in leakproofness, long in service life, convenient to produce on a large scale, convenient to install and easy to maintain, and the influence of flower hair and dust on the pulley assembly is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic jacquard machines of textile machinery, and in particular relates to a double-layer pulley block groove plate and a needle selection device and a jacquard machine equipped with the groove plate. Background Art

[0002] In recent years, electronic jacquard machines have made great progress. Electronic jacquard machines use a key component called the needle selector assembly (also called assembly). The needle selector assembly 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. Jacquard machines are divided into single-action and double-action types. The double-action type has a complex mechanism. One jacquard needle (first thread) corresponds to two vertical hooks, and the two vertical hooks are converted into the rise and fall of one jacquard needle (first thread) through a pulley group. The double-action type causes less damage to the warp yarn and is conducive to weaving. At present, most electronic jacquard machines are double-action type.

[0003] When the electronic jacquard machine develops to a large number of needles, it is bound to put forward new requirements for the density of the needle selector assembly. Otherwise, the jacquard machine is too large to match the loom and install it, so the demand for high-density needle selector assemblies is put forward. Double-layer technology is a way to increase the density of the needle selector assembly, including double-layer electromagnets and double-layer pulley blocks. There are two types of pulley blocks in existing jacquard machines, one is open type and the other is slot plate type.

[0004] The pulleys and pulley wires of the open pulley block are open without any separation or shielding. Although the cost of the open type is relatively low, the installation and debugging workload is extremely large, and it is easy to accumulate lint during operation, which is inconvenient to maintain. It is mostly used for filament lint-free fabrics. The grooved plate pulley block is to install the pulley and pulley wire in the plastic groove plate, and together with the electromagnet and armature hook part, it is made into the needle selection unit of the needle selector assembly. Usually, 8 needle selection units are made into 1 needle selector assembly, and the needle selector assembly is installed as a unit. The upper part of the needle selector assembly is the electromagnet and armature hook part, and the lower part of the needle selector assembly is the pulley block, pulley wire and the slide groove for the upper and lower movement of the limit pulley block; there is also a vertical hook guide groove, which limits the upward and downward movement of the vertical hook.

[0005] Although the cost of the grooved plate pulley block is higher, it is easy to install and maintain, and a single component can be disassembled, replaced, and maintained. In addition, the grooved plate pulley block has good airtightness. Because the pulley block moves under the guidance and limit of the slide groove, its smoothness of movement and vibration resistance are significantly better than the open pulley block (the pulleys of the open pulley block are installed in the air, and will vibrate and shake during high-speed movement, and even interfere with the adjacent pulley blocks or pulley lines). Because the adjacent pulley blocks and pulley lines are isolated from each other and will not interfere with each other, the design density can also be higher.

[0006] The size of a needle selection unit of the existing needle selector assembly (projected size on the fabric surface) is 5mm*35mm, 35mm is the distribution direction of the knife lifting. This size involves two sets of conjugate motion knife lifting, which is the core mechanical structure and motion drive of the jacquard machine. Therefore, this size cannot be changed, because once this size is changed, the entire jacquard machine is equivalent to being torn down and redesigned. The only way to improve it is to propose a plan to increase the density on the size of 5mm. There are two technical solutions:

[0007] One is to reduce the thickness of the pulley block. If the thickness of the pulley block can be reduced to 2.4mm, two pulley blocks can be directly installed in parallel to achieve double density. However, the 2.4mm ultra-thin pulley block solution is limited by ultra-thin ball bearings. It is currently difficult to apply ball bearings with a thickness of less than 2mm for jacquard pulleys. Therefore, another technical solution is to keep the pulley block structure that currently uses ball bearings unchanged, and adopt an upper and lower stacking and staggered installation solution, which is expected to achieve double density within a 5mm thickness space. Summary of the invention

[0008] In order to make up for the deficiencies of the above-mentioned prior art, the present invention provides a double-layer pulley block groove plate and a needle selection device and a jacquard machine equipped with the groove plate.

[0009] In order to solve the above technical problems and achieve the above technical effects, the present invention is implemented through the following technical solutions:

[0010] A double-layer pulley block groove plate, comprising a second substrate, a first substrate, and a second substrate which are sequentially assembled from left to right, or a first substrate, a second substrate, and a first substrate which are sequentially assembled from left to right;

[0011] The groove shape on the right side of the second substrate is combined with the groove shape on the left side of the first substrate to form an upper pulley assembly functional layer, and the upper pulley block functional layer is divided into four functional sections from top to bottom: an upper pulley block vertical hook slide groove section, an upper pulley block upper pulley line groove section, an upper pulley block pulley slide groove section, and an upper pulley block lower pulley line groove section;

[0012] The groove shape on the right side of the first substrate and the groove shape on the left side of the second substrate are combined to form a lower pulley assembly functional layer, and the lower pulley assembly functional layer is divided into four functional sections from top to bottom: a lower pulley assembly vertical hook slide groove section, a lower pulley assembly upper pulley line groove section, a lower pulley assembly pulley slide groove section, and a lower pulley assembly lower pulley line groove section;

[0013] The upper pulley assembly functional layer and the lower pulley assembly functional layer are overlapped with each other on the left and right relative to the first substrate or the second substrate, and the upper pulley block vertical hook slide groove section corresponds to the left and right positions of the lower pulley block vertical hook slide groove section and has the same thickness; the upper pulley block pulley slide groove section corresponds to the left and right positions of the upper pulley line groove section of the lower pulley block, and the thickest pulley block bracket section of the upper pulley block pulley slide groove section is located at the center of the groove plate, and the upper pulley line groove section of the lower pulley block is located at The two side positions of the groove plate do not conflict with each other in space and can be nested; the lower pulley line groove section of the upper pulley block corresponds to the left and right positions of the pulley groove section of the lower pulley block, and the lower pulley line groove section of the upper pulley block is located at the two side positions of the groove plate, and does not conflict with the pulley block bracket section of the pulley groove section of the lower pulley block located at the center position of the groove plate; the pulley groove section of the upper pulley block has the same thickness as the pulley groove section of the lower pulley block, and is designed to be staggered and stacked on the left and right sides.

[0014] Furthermore, the first substrate and the second substrate are both plastic parts that are injection molded in one step, and the left and right sides of the first substrate and the second substrate are respectively provided with buckles, and the right side of the second substrate and the left side of the first substrate are superimposed and spliced ​​through the corresponding buckles, and the right side of the first substrate and the left side of the second substrate are superimposed and spliced ​​through the corresponding buckles.

[0015] Furthermore, when the second substrate, the first substrate, and the second substrate are assembled, the first substrate in the middle is used as the center substrate. At this time, two sets of electromagnet and armature hook installation positions stacked up and down are provided on the top of the first substrate, and heat sinks corresponding to the positions of the corresponding electromagnets are respectively provided on the tops of the two second substrates on both sides;

[0016] When the first substrate, the second substrate, and the first substrate are assembled together, the second substrate in the middle is used as the center substrate. At this time, two sets of electromagnet and armature hook installation positions stacked up and down are set on the top of the second substrate, and heat sinks corresponding to the corresponding electromagnet positions are respectively set on the tops of the two first substrates on both sides.

[0017] Further, the groove types on the left side of the first substrate are, from top to bottom, the first half side groove of the upper pulley block vertical hook, the first half side groove of the upper pulley line of the upper pulley block, the first half side groove of the pulley of the upper pulley block, and the first half side groove of the lower pulley line of the upper pulley block; the groove types on the right side of the second substrate are, from top to bottom, the second half side groove of the upper pulley block vertical hook, the second half side groove of the upper pulley line of the upper pulley block, the second half side groove of the pulley of the upper pulley block, and the second half side groove of the lower pulley line of the upper pulley block;

[0018] When the right side surface of the second substrate is spliced ​​left and right with the left side surface of the first substrate, the second half-side slide groove of the vertical hook of the upper pulley block and the first half-side slide groove of the vertical hook of the upper pulley block are spliced ​​left and right to form the vertical hook slide groove section of the upper pulley block, the second half-side line groove of the upper pulley line of the upper pulley block and the first half-side line groove of the upper pulley line of the upper pulley block are spliced ​​left and right to form the upper pulley line line groove section of the upper pulley block, the second half-side line groove of the lower pulley line of the upper pulley block and the first half-side line groove of the lower pulley line of the upper pulley block are spliced ​​left and right to form the lower pulley line line groove section of the upper pulley block.

[0019] The groove types on the right side of the first substrate are, from top to bottom, the first half side groove of the vertical hook of the lower pulley group, the first half side groove of the upper pulley line of the lower pulley group, the first half side groove of the pulley of the lower pulley group, and the first half side groove of the lower pulley line of the lower pulley group; the groove types on the left side of the second substrate are, from top to bottom, the second half side groove of the vertical hook of the lower pulley group, the second half side groove of the upper pulley line of the lower pulley group, the second half side groove of the pulley of the lower pulley group, and the second half side groove of the lower pulley line of the lower pulley group;

[0020] When the right side of the first substrate and the left side of the second substrate are spliced ​​left and right, the first half side slot of the vertical hook of the lower pulley group and the second half side slot of the vertical hook of the lower pulley group are spliced ​​left and right to form the vertical hook slot section of the lower pulley group, the first half side slot of the upper pulley line of the lower pulley group and the second half side slot of the upper pulley line of the lower pulley group are spliced ​​left and right to form the upper pulley line slot section of the lower pulley group, the first half side slot of the pulley of the lower pulley group and the second half side slot of the pulley of the lower pulley group are spliced ​​left and right to form the lower pulley slot section of the lower pulley group, and the first half side slot of the lower pulley line of the lower pulley group and the second half side slot of the lower pulley line of the lower pulley group are spliced ​​left and right to form the lower pulley line slot section of the lower pulley group.

[0021] Furthermore, positioning notches for judging whether the two are correctly assembled are respectively provided on the lower side end surfaces of the first substrate and the second substrate. When the first substrate and the second substrate are assembled facing each other with the correct side groove type, the positioning notch on the first substrate is aligned with the positioning notch on the second substrate on the left and right.

[0022] Furthermore, the second substrate and the first substrate are spliced ​​together to form an A-type single-layer slot plate section; each slot in the A-type single-layer slot plate section can accommodate a set of upper pulley assemblies, and each corresponds to a needle selection unit;

[0023] A plurality of identical A-type single-layer slot plate sections are stacked from left to right in sequence and then a second substrate is assembled on the rightmost side to form a set of A-type multi-layer slot plate components. The slots formed between two adjacent A-type single-layer slot plate sections can accommodate a set of lower pulley components, and each corresponds to a needle selection unit.

[0024] Thus, a set of the A-type multi-layer slot plate components can correspond to multiple needle selection units to meet the needs of the needle selector component;

[0025] Alternatively, the first substrate and the second substrate are assembled from left to right to form a B-type single-layer slot plate section; each of the B-type single-layer slot plate sections can accommodate a set of lower pulley assemblies and corresponds to a needle selection unit;

[0026] A plurality of identical B-type single-layer slot plate sections are stacked from left to right in sequence and then a first substrate is assembled on the rightmost side to form a set of B-type multi-layer slot plate components. The slots formed between two adjacent B-type single-layer slot plate sections can accommodate a set of upper pulley components and correspond to a needle selection unit.

[0027] Thus, a group of the B-type multi-layer slot plate components can correspond to multiple needle selection units to meet the needs of the needle selector component.

[0028] Furthermore, the upper, middle and lower parts of the first substrate and the second substrate are respectively provided with fixing sections, and through holes are opened on the fixing sections. After multiple A-type single-layer slotted plate sections or multiple B-type single-layer slotted plate sections are stacked, they are fixed by the cooperation of fasteners and the through holes.

[0029] A double-layer pulley block, comprising the above-mentioned double-layer pulley block groove plate, an upper pulley assembly and a lower pulley assembly;

[0030] The upper pulley assembly comprises an upper pulley block vertical hook pair, an upper pulley block upper pulley line, an upper pulley block, a lower pulley line on the upper pulley block and an upper pulley block first line joint;

[0031] The lower pulley assembly comprises a lower pulley assembly vertical hook pair, a lower pulley assembly, an upper pulley line of the lower pulley assembly, a lower pulley line of the lower pulley assembly and a first line joint of the lower pulley assembly;

[0032] The upper pulley block vertical hook pair and the lower pulley block vertical hook pair are respectively movably arranged in the upper pulley block vertical hook slot section and the lower pulley block vertical hook slot section; the upper pulley block and the lower pulley block are respectively movably arranged in the upper pulley block pulley slot section and the lower pulley block pulley slot section; the upper pulley block and the lower pulley block are stacked in the double-layer pulley block groove plate in an up-and-down staggered manner;

[0033] The two ends of the upper pulley line of the upper pulley block go around the lower edge of the upper pulley of the upper pulley block, then go up through the upper pulley line groove section of the upper pulley block and are respectively connected to the two vertical hooks of the upper pulley block vertical hook pair; the two ends of the lower pulley line of the upper pulley block go around the upper edge of the lower pulley of the upper pulley block, then are respectively led downward through the lower pulley line groove section of the upper pulley block; the first line joint of the upper pulley block is connected to one end of the lower pulley line of the upper pulley block led downward;

[0034] The two ends of the upper pulley line of the lower pulley assembly pass around the lower edge of the upper pulley of the lower pulley assembly, then go up through the line groove section of the upper pulley of the lower pulley assembly and are respectively connected to the two vertical hooks of the lower pulley assembly vertical hook pair; the two ends of the lower pulley line of the lower pulley assembly pass around the upper edge of the lower pulley of the lower pulley assembly, then are led downwards through the line groove section of the lower pulley of the lower pulley assembly; the first line joint of the lower pulley assembly is connected to one of the ends of the lower pulley line of the lower pulley assembly led downwards.

[0035] A needle selector assembly is provided with the above-mentioned grooved plate type double-layer pulley block.

[0036] A jacquard machine is provided with the needle selector assembly mentioned above.

[0037] The beneficial effects of the present invention are:

[0038] The double pulley block groove plate of the present invention improves the installation density of the pulley assembly, and two sets of pulley assemblies are installed while keeping the thickness of the original pulley block unchanged. Compared with the existing open jacquard machine pulley block, the double pulley block groove plate of the present invention has a compact structure and good airtightness, which can minimize the impact of flower hair and dust on the pulley assembly, has a long service life, is easy to install, and is simple to maintain, and is suitable for mass production.

[0039] 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

[0040] 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:

[0041] Figure 1 It is a schematic diagram of the groove structure on the left side of the first substrate in the present invention;

[0042] Figure 2 It is a schematic diagram of the groove structure on the right side of the first substrate in the present invention;

[0043] Figure 3 It is a schematic diagram of the groove structure on the right side of the second substrate in the present invention;

[0044] Figure 4 It is a schematic diagram of the groove structure on the left side of the second substrate in the present invention;

[0045] Figure 5 An exploded view of an embodiment of an A-type double-layer grooved plate of the present invention;

[0046] Figure 6 An exploded view of an embodiment of a B-type double-layer grooved plate of the present invention;

[0047] Figure 7 An exploded view of an embodiment of an A-type multi-layer slotted plate assembly of the present invention;

[0048] Figure 8 An exploded view of an embodiment of a B-type double-layer slotted plate assembly of the present invention;

[0049] Fig. 9 An exploded view of an embodiment of a type A double-layer pulley block of the present invention;

[0050] Fig.10 An exploded view of an embodiment of a type A multi-layer pulley block of the present invention;

[0051] Fig.11 An exploded view of an embodiment of a type B double-layer pulley block of the present invention;

[0052] Fig.12 It is an exploded view of an embodiment of a B-type multi-layer pulley block of the present invention. DETAILED DESCRIPTION

[0053] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings so that the purpose, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0054] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0055] The present invention firstly proposes two substrates with different double-sided groove types, namely a first substrate 9 and a second substrate 10 .

[0056] See also Figure 1-2As shown, the groove types on the left side of the first substrate 9 are, from top to bottom, the first half-side groove 901 of the vertical hook of the upper pulley group, the first half-side groove 902 of the upper pulley line of the upper pulley group, the first half-side groove 903 of the pulley of the upper pulley group, and the first half-side groove 904 of the lower pulley line of the upper pulley group; the groove types on the right side of the first substrate 9 are, from top to bottom, the first half-side groove 905 of the vertical hook of the lower pulley group, the first half-side groove 906 of the upper pulley line of the lower pulley group, the first half-side groove 907 of the pulley of the lower pulley group, and the first half-side groove 908 of the lower pulley line of the lower pulley group.

[0057] See also Figure 3-4 As shown, the groove types on the right side of the second substrate 10 are, from top to bottom, the second half-side groove 1001 of the vertical hook of the upper pulley block, the second half-side groove 1002 of the upper pulley line of the upper pulley block, the second half-side groove 1003 of the pulley of the upper pulley block, and the second half-side groove 1004 of the lower pulley line of the upper pulley block; the groove types on the left side of the second substrate 10 are, from top to bottom, the second half-side groove 1005 of the vertical hook of the lower pulley block, the second half-side groove 1006 of the upper pulley line of the lower pulley block, the second half-side groove 1007 of the pulley of the lower pulley block, and the second half-side groove 1008 of the lower pulley line of the lower pulley block.

[0058] Preferably, the first substrate 9 and the second substrate 10 are both plastic parts that are injection molded at one time. Buckles are respectively provided on the left and right sides of the first substrate 9 and the second substrate 10. The first substrate 9 and the second substrate 10 are correctly assembled with the corresponding buckles.

[0059] Preferably, the lower side end surface of the first substrate 9 and the lower side end surface of the second substrate 10 are respectively provided with positioning notches 13 for judging whether the two are correctly assembled. When the first substrate 9 and the second substrate 10 are assembled facing each other with the correct side groove type, the positioning notch 13 on the first substrate 9 is left-to-right fitted with the positioning notch 13 on the second substrate 10.

[0060] Based on the first substrate 9 and the first substrate 10 provided above, by splicing the two in different orders, the present invention provides the following two embodiments of double-layer pulley block groove plates.

[0061] Example 1A type double-layer groove plate

[0062] See also Figure 5 As shown, one first substrate 9 and two second substrates 10 are selected, and the three are assembled in sequence from left to right in the order of the second substrate 10, the first substrate 9, and the second substrate 10.

[0063] When the right side surface of the second substrate 10 is spliced ​​with the left side surface of the first substrate 9, the second half-side chute 1001 of the vertical hook of the upper pulley block and the first half-side chute 901 of the vertical hook of the upper pulley block are spliced ​​left and right to form the vertical hook chute section of the upper pulley block, the second half-side line groove 1002 of the upper pulley line of the upper pulley block and the first half-side line groove 902 of the upper pulley line of the upper pulley block are spliced ​​left and right to form the upper pulley line line groove section of the upper pulley block, the second half-side chute 1003 of the pulley of the upper pulley block and the first half-side chute 903 of the pulley of the upper pulley block are spliced ​​left and right to form the pulley chute section of the upper pulley block, and the second half-side line groove 1004 of the lower pulley line of the upper pulley block and the first half-side line groove 904 of the lower pulley line of the upper pulley block are spliced ​​left and right to form the lower pulley line line groove section of the upper pulley block.

[0064] The four functional sections of the upper pulley block vertical hook slide section, the upper pulley block upper pulley line groove section, the upper pulley block pulley slide section, and the upper pulley block lower pulley line groove section constitute the upper pulley assembly functional layer located in the left half of the A-type double-layer groove plate.

[0065] When the right side surface of the first substrate 9 and the left side surface of the second substrate 10 are spliced ​​left and right, the first half side groove 905 of the vertical hook of the lower pulley group and the second half side groove 1005 of the vertical hook of the lower pulley group are spliced ​​left and right to form the vertical hook groove section of the lower pulley group, the first half side groove 906 of the upper pulley line of the lower pulley group and the second half side groove 1006 of the upper pulley line of the lower pulley group are spliced ​​left and right to form the upper pulley line groove section of the lower pulley group, the first half side groove 907 of the lower pulley group and the second half side groove 1007 of the lower pulley group pulley are spliced ​​left and right to form the lower pulley group pulley groove section, and the first half side groove 908 of the lower pulley line of the lower pulley group and the second half side groove 1008 of the lower pulley line of the lower pulley group are spliced ​​left and right to form the lower pulley line groove section of the lower pulley group.

[0066] The four functional sections formed by combining the right side groove of the first substrate 9 and the left side groove of the second substrate 10, namely, the lower pulley assembly vertical hook groove section, the upper pulley line groove section of the lower pulley assembly, the lower pulley assembly pulley groove section, and the lower pulley line groove section of the lower pulley assembly, constitute the lower pulley assembly functional layer located in the right half of the A-type groove plate section.

[0067] In the A-type double-layer groove plate, the functional layer of the upper pulley assembly overlaps with the functional layer of the lower pulley assembly on the left and right, and the vertical hook slide groove section of the upper pulley block corresponds to the vertical hook slide groove section of the lower pulley block on the left and right positions and has the same thickness; the pulley slide groove of the upper pulley block (actually a combination of the upper pulley line groove section of the upper pulley block and the pulley slide groove section of the upper pulley block) corresponds to the left and right positions of the upper pulley line groove section of the lower pulley block, and the thickest pulley block bracket section of the pulley slide groove section of the upper pulley block is located at the center of the groove plate, while the upper pulley line groove section of the lower pulley block is located on both sides of the groove plate, and there is no conflict in space. The lower pulley line groove section of the upper pulley block corresponds to the left and right position of the pulley line groove section of the lower pulley block (actually the combined section of the pulley line groove section of the lower pulley block and the lower pulley line groove section of the lower pulley block), and the lower pulley line groove section of the upper pulley block is located on both sides of the groove plate, 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 groove plate; 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 and are designed to be stacked up and down on the left and right sides, providing space for the subsequent up and down staggered installation of the upper pulley block and the lower pulley block.

[0068] Preferably, in the A-type double-layer slot plate, the first substrate 9 located in the middle serves as the central plate. At this time, two groups of electromagnet and armature hook mounting positions stacked up and down are provided on the top of the first substrate 9, and heat sinks corresponding to the respective electromagnet positions are provided on the tops of the two second substrates 10 located on both sides.

[0069] Therefore, each A-type double-layer slot plate can accommodate two upper and lower pulley assemblies, two upper and lower electromagnets and armature hooks, so that they can correspond to two needle selection units respectively.

[0070] Example 2 Type B double-layer grooved plate

[0071] See also Figure 6 As shown, two first substrates 9 and one second substrate 10 are selected, and the three are assembled in sequence from left to right in the order of first substrate 9, second substrate 10, and first substrate 9.

[0072] When the right side surface of the first substrate 9 and the left side surface of the second substrate 10 are spliced ​​left and right, the first half side groove 905 of the vertical hook of the lower pulley group and the second half side groove 1005 of the vertical hook of the lower pulley group are spliced ​​left and right to form the vertical hook groove section of the lower pulley group, the first half side groove 906 of the upper pulley line of the lower pulley group and the second half side groove 1006 of the upper pulley line of the lower pulley group are spliced ​​left and right to form the upper pulley line groove section of the lower pulley group, the first half side groove 907 of the lower pulley group and the second half side groove 1007 of the lower pulley group pulley are spliced ​​left and right to form the lower pulley group pulley groove section, and the first half side groove 908 of the lower pulley line of the lower pulley group and the second half side groove 1008 of the lower pulley line of the lower pulley group are spliced ​​left and right to form the lower pulley line groove section of the lower pulley group.

[0073] The four functional sections formed by combining the right side groove of the first substrate 9 and the left side groove of the second substrate 10, namely, the lower pulley assembly vertical hook groove section, the upper pulley line groove section of the lower pulley assembly, the lower pulley assembly pulley groove section, and the lower pulley line groove section of the lower pulley assembly, constitute the lower pulley assembly functional layer located in the right half of the A-type groove plate section.

[0074] When the right side surface of the second substrate 10 is spliced ​​with the left side surface of the first substrate 9, the second half-side chute 1001 of the vertical hook of the upper pulley block and the first half-side chute 901 of the vertical hook of the upper pulley block are spliced ​​left and right to form the vertical hook chute section of the upper pulley block, the second half-side line groove 1002 of the upper pulley line of the upper pulley block and the first half-side line groove 902 of the upper pulley line of the upper pulley block are spliced ​​left and right to form the upper pulley line line groove section of the upper pulley block, the second half-side chute 1003 of the pulley of the upper pulley block and the first half-side chute 903 of the pulley of the upper pulley block are spliced ​​left and right to form the pulley chute section of the upper pulley block, and the second half-side line groove 1004 of the lower pulley line of the upper pulley block and the first half-side line groove 904 of the lower pulley line of the upper pulley block are spliced ​​left and right to form the lower pulley line line groove section of the upper pulley block.

[0075] The four functional sections of the upper pulley block vertical hook slide section, the upper pulley block upper pulley line groove section, the upper pulley block pulley slide section, and the upper pulley block lower pulley line groove section constitute the upper pulley assembly functional layer located in the left half of the B-type double-layer groove plate.

[0076] In the B-type double-layer groove plate, the functional layer of the lower pulley assembly overlaps with the functional layer of the upper pulley assembly on the left and right, and the vertical hook slide groove section of the lower pulley block corresponds to the vertical hook slide groove section of the upper pulley block on the left and right positions and has the same thickness; the upper pulley line groove section of the lower pulley block corresponds to the pulley slide groove section of the upper pulley block (actually a combination section of the upper pulley line groove section of the upper pulley block and the pulley slide groove section of the upper pulley block), and the thickest pulley block bracket section of the upper pulley block pulley slide groove section is located in the center of the groove plate, while the upper pulley line groove section of the lower pulley block is located on both sides of the groove plate, and there is no conflict in space. The cam section of the lower pulley block is nested; the pulley slot section of the lower pulley block (actually a combination of the pulley slot section of the lower pulley block and the lower pulley line slot section of the lower pulley block) corresponds to the left and right positions of the lower pulley line slot section of the upper pulley block, and the lower pulley line slot section of the upper pulley block is located on both sides of the slot plate, and does not conflict with the pulley block bracket section of the pulley slot section of the lower pulley block located at the center of the slot plate; the pulley slot section of the lower pulley block has the same thickness as the pulley slot section of the upper pulley block and is designed to be stacked up and down on the left and right sides, providing space for the subsequent up and down staggered installation of the lower pulley block and the upper pulley block.

[0077] Preferably, in the B-type double-layer slot plate, the second substrate 10 located in the middle serves as the center plate. At this time, two groups of electromagnet and armature hook mounting positions stacked up and down are provided on the top of the second substrate 10, and the tops of the two first substrates 9 located on both sides are respectively provided with heat sinks corresponding to the respective electromagnet positions.

[0078] Therefore, each B-type double-layer slot plate can accommodate two upper and lower pulley assemblies, two upper and lower electromagnets and armature hooks, so that they can correspond to two needle selection units respectively.

[0079] Based on the above-provided B-type double-layer slot plate and B-type double-layer slot plate, the present invention further provides the following two embodiments of multi-layer slot plate assemblies.

[0080] Example 3A multi-layer slot plate assembly

[0081] See also Figure 7 As shown, based on the arrangement and assembly method of Example 1, a second substrate 10 and a first substrate 9 can be assembled left and right to form an A-type single-layer slot plate section, and then a plurality of the A-type single-layer slot plate sections are stacked from left to right in sequence, and finally a second substrate 10 is assembled on the rightmost side of the above-mentioned combination, thereby forming a group of A-type multi-layer slot plate components.

[0082] In this way, the groove in each of the A-type single-layer groove plate sections can accommodate a set of upper pulley assemblies, and each corresponds to a needle selection unit; at the same time, the groove between two adjacent A-type single-layer groove plate sections can also accommodate a set of lower pulley assemblies, and each corresponds to a needle selection unit.

[0083] That is, a set of upper pulley assemblies can be accommodated between the right side surface of each second substrate 10 and the left side surface of the opposite first substrate 9, and a set of lower pulley assemblies can be accommodated between the right side surface of each first substrate 9 and the left side surface of the opposite second substrate 10, so that a set of the A-type multi-layer slot plate assemblies can correspond to multiple needle selection units to meet the needs of the needle selector assembly.

[0084] For example, after 9 second substrates 10 and 8 first substrates 9 are correctly assembled from left to right, a set of A-type 16-layer slot plate assembly can be formed. The A-type 16-layer slot plate assembly can accommodate 8 sets of upper pulley assemblies and 8 sets of lower pulley assemblies alternately stacked from left to right, thereby satisfying the needle selector assembly of 16 needle selection units.

[0085] Preferably, the upper, middle and lower parts of the first substrate 9 and the second substrate 10 are respectively provided with fixing sections, each fixing section is provided with a through hole 14, and after all the second substrates 10 and the first substrates 9 are alternately stacked and assembled, further fixation is achieved by the cooperation of fasteners and the through holes 14.

[0086] Embodiment 4 Type B multi-layer slot plate assembly

[0087] See also Figure 8As shown, based on the arrangement and assembly method of Example 2, a first substrate 9 and a second substrate 10 can be assembled left and right to form a B-type single-layer slot plate section, and then a plurality of the B-type single-layer slot plate sections are stacked from left to right in sequence, and finally a first substrate 9 is assembled on the rightmost side of the above-mentioned combination, thereby forming a group of B-type multi-layer slot plate components.

[0088] In this way, the groove type in each of the B-type single-layer groove plate sections can accommodate a set of lower pulley assemblies, and each corresponds to a needle selection unit; at the same time, the groove type formed between two adjacent B-type single-layer groove plate sections can also accommodate a set of upper pulley assemblies, and each corresponds to a needle selection unit.

[0089] That is, a set of lower pulley assemblies can be accommodated between the right side surface of each first substrate 9 and the left side surface of the opposite second substrate 10, and a set of upper pulley assemblies can be accommodated between the right side surface of each second substrate 10 and the left side surface of the opposite first substrate 9, so that a set of the B-type multi-layer slot plate assemblies can correspond to multiple needle selection units to meet the needs of the needle selector assembly.

[0090] For example, eight second substrates 10 and eight first substrates 9 are correctly spaced and assembled from left to right to form a set of B-type 15-layer slot plate components. The B-type 15-layer slot plate components can accommodate eight sets of lower pulley assemblies and seven sets of upper pulley assemblies alternately stacked from left to right, thereby satisfying the needle selector assembly of 15 needle selection units.

[0091] Preferably, the upper, middle and lower parts of the first substrate 9 and the second substrate 10 are respectively provided with fixing sections, each of which is provided with a through hole 14. After m+1 first substrates 9 and m second substrates 10 are alternately stacked and assembled, further fixation is achieved by the cooperation of fasteners and the through holes 14.

[0092] Usually, a needle selector assembly contains 8 needle selection units, each of which includes an electromagnet (including an iron core, a coil, a frame, two coil lead contact pins), two armature hooks, two springs, two rotating shafts and a pulley assembly. Since the existing slot plate can only accommodate one needle selection unit, the slots on both sides of the existing slot plate are the same, and the design and production are relatively simple.

[0093] In order to accommodate two needle selection units in one slot plate without increasing the width and thickness of the slot plate, the present invention needs to design two substrates with different double-sided slot types, so as to realize the double-layer structure in the slot plate and realize the combination of two needle selection units, which only occupies the same width (35mm) and thickness (5mm) of the original one needle selection unit.

[0094] Since the present invention can accommodate two needle selection units in one slot plate, for the convenience of description, the present invention artificially defines one double-layer pulley block slot plate as a slot plate section, and multiple stacked slot plate sections as slot plate assemblies. Correspondingly, the present invention artificially defines two needle selection units accommodated in the same slot plate section as a needle selector assembly section, and multiple stacked needle selector assembly sections as needle selector assemblies.

[0095] The pulley assembly in the needle selection unit mainly includes a pulley block, an upper pulley line (including a vertical hook), and a lower pulley line (including a fixed end block and a quick connector). Based on the above four embodiments, the present invention also provides the following two embodiments of a double-layer pulley block.

[0096] Example 5A double-layer pulley block

[0097] See also Fig. 9 As shown, based on Example 1, it further includes a set of upper pulley assemblies and a set of lower pulley assemblies. The upper pulley assemblies and the lower pulley assemblies are arranged alternately in the A-type double-layer groove plate of Example 1, thereby forming a single A-type double-layer pulley block.

[0098] The upper pulley assembly comprises an upper pulley block vertical hook pair 1, an upper pulley block upper pulley line 5, an upper pulley block 3, an upper pulley block lower pulley line 6 and an upper pulley block first line joint 11.

[0099] The lower pulley assembly comprises a lower pulley block vertical hook pair 2, a lower pulley block 7, an upper pulley line 4 of the lower pulley block, a lower pulley line 8 of the lower pulley block and a first line joint 12 of the lower pulley block.

[0100] The upper pulley block vertical hook pair 1 and the lower pulley block vertical hook pair 2 are respectively movably arranged in the upper pulley block vertical hook slot section and the lower pulley block vertical hook slot section; the upper pulley block 3 and the lower pulley block 7 are respectively movably arranged in the upper pulley block pulley slot section and the lower pulley block pulley slot section; the upper pulley block 3 and the lower pulley block 7 are stacked in an up-and-down staggered manner in the double-layer pulley block groove plate.

[0101] The two ends of the upper pulley line 5 of the upper pulley block pass around the lower edge of the upper pulley of the upper pulley block 3 and then go up through the upper pulley line groove section of the upper pulley block and are respectively connected to the two vertical hooks of the upper pulley block vertical hook pair 1; the two ends of the lower pulley line 6 of the upper pulley block pass around the upper edge of the lower pulley of the upper pulley block 3 and then are respectively led downward through the lower pulley line groove section of the upper pulley block; the upper pulley block first line joint 11 is connected to one of the ends of the lower pulley line 6 of the upper pulley block led downward.

[0102] The two ends of the upper pulley line 4 of the lower pulley block bypass the lower edge of the upper pulley of the lower pulley block 7 and then go upward through the line groove section of the upper pulley of the lower pulley block and are respectively connected to the two vertical hooks of the lower pulley block vertical hook pair 2; the two ends of the lower pulley line 8 of the lower pulley block bypass the upper edge of the lower pulley of the lower pulley block 7 and then are respectively led downward through the line groove section of the lower pulley of the lower pulley block; the first line joint 12 of the lower pulley block is connected to one of the ends of the lower pulley line 8 of the lower pulley block led downward.

[0103] Embodiment 6A multi-layer pulley block

[0104] See also Fig.10 As shown, on the basis of embodiment 3, multiple groups of upper pulley assemblies and multiple groups of lower pulley assemblies are further included. The upper pulley assemblies and the lower pulley assemblies are arranged alternately in the left and right order in the A-type multi-layer groove plate of embodiment 3, thereby forming an A-type multi-layer pulley group.

[0105] The upper pulley assembly comprises an upper pulley block vertical hook pair 1, an upper pulley block upper pulley line 5, an upper pulley block 3, an upper pulley block lower pulley line 6 and an upper pulley block first line joint 11.

[0106] The lower pulley assembly comprises a lower pulley block vertical hook pair 2, a lower pulley block 7, an upper pulley line 4 of the lower pulley block, a lower pulley line 8 of the lower pulley block and a first line joint 12 of the lower pulley block.

[0107] The upper pulley block vertical hook pair 1 and the lower pulley block vertical hook pair 2 are respectively movably arranged in the upper pulley block vertical hook slot section and the lower pulley block vertical hook slot section; the upper pulley block 3 and the lower pulley block 7 are respectively movably arranged in the upper pulley block pulley slot section and the lower pulley block pulley slot section; the upper pulley block 3 and the lower pulley block 7 are stacked in an up-and-down staggered manner in the double-layer pulley block groove plate.

[0108] The two ends of the upper pulley line 5 of the upper pulley block pass around the lower edge of the upper pulley of the upper pulley block 3 and then go up through the upper pulley line groove section of the upper pulley block and are respectively connected to the two vertical hooks of the upper pulley block vertical hook pair 1; the two ends of the lower pulley line 6 of the upper pulley block pass around the upper edge of the lower pulley of the upper pulley block 3 and then are respectively led downward through the lower pulley line groove section of the upper pulley block; the upper pulley block first line joint 11 is connected to one of the ends of the lower pulley line 6 of the upper pulley block led downward.

[0109] The two ends of the upper pulley line 4 of the lower pulley block bypass the lower edge of the upper pulley of the lower pulley block 7 and then go upward through the line groove section of the upper pulley of the lower pulley block and are respectively connected to the two vertical hooks of the lower pulley block vertical hook pair 2; the two ends of the lower pulley line 8 of the lower pulley block bypass the upper edge of the lower pulley of the lower pulley block 7 and then are respectively led downward through the line groove section of the lower pulley of the lower pulley block; the first line joint 12 of the lower pulley block is connected to one of the ends of the lower pulley line 8 of the lower pulley block led downward.

[0110] Example 7: Type B double-layer pulley block

[0111] See also Fig.11As shown, based on Example 2, a group of lower pulley assemblies and a group of upper pulley assemblies are further included. The lower pulley assemblies and the upper pulley assemblies are arranged alternately left and right in the B-type double-layer groove plate of Example 2, thereby forming a single B-type double-layer pulley block.

[0112] The lower pulley assembly comprises a lower pulley block vertical hook pair 2, a lower pulley block 7, an upper pulley line 4 of the lower pulley block, a lower pulley line 8 of the lower pulley block and a first line joint 12 of the lower pulley block.

[0113] The upper pulley assembly comprises an upper pulley block vertical hook pair 1, an upper pulley block upper pulley line 5, an upper pulley block 3, an upper pulley block lower pulley line 6 and an upper pulley block first line joint 11.

[0114] The upper pulley block vertical hook pair 1 and the lower pulley block vertical hook pair 2 are respectively movably arranged in the upper pulley block vertical hook slot section and the lower pulley block vertical hook slot section; the upper pulley block 3 and the lower pulley block 7 are respectively movably arranged in the upper pulley block pulley slot section and the lower pulley block pulley slot section; the upper pulley block 3 and the lower pulley block 7 are stacked in an up-and-down staggered manner in the double-layer pulley block groove plate.

[0115] The two ends of the upper pulley line 5 of the upper pulley block pass around the lower edge of the upper pulley of the upper pulley block 3 and then go up through the upper pulley line groove section of the upper pulley block and are respectively connected to the two vertical hooks of the upper pulley block vertical hook pair 1; the two ends of the lower pulley line 6 of the upper pulley block pass around the upper edge of the lower pulley of the upper pulley block 3 and then are respectively led downward through the lower pulley line groove section of the upper pulley block; the upper pulley block first line joint 11 is connected to one of the ends of the lower pulley line 6 of the upper pulley block led downward.

[0116] The two ends of the upper pulley line 4 of the lower pulley block bypass the lower edge of the upper pulley of the lower pulley block 7 and then go upward through the line groove section of the upper pulley of the lower pulley block and are respectively connected to the two vertical hooks of the lower pulley block vertical hook pair 2; the two ends of the lower pulley line 8 of the lower pulley block bypass the upper edge of the lower pulley of the lower pulley block 7 and then are respectively led downward through the line groove section of the lower pulley of the lower pulley block; the first line joint 12 of the lower pulley block is connected to one of the ends of the lower pulley line 8 of the lower pulley block led downward.

[0117] Embodiment 8 Type B multi-layer pulley block

[0118] See also Fig.12 As shown, on the basis of Example 4, multiple sets of lower pulley assemblies and multiple sets of upper pulley assemblies are further included. The lower pulley assemblies and the upper pulley assemblies are arranged alternately in the B-type multi-layer groove plate of Example 4, thereby forming a B-type multi-layer pulley block.

[0119] The lower pulley assembly comprises a lower pulley block vertical hook pair 2, a lower pulley block 7, an upper pulley line 4 of the lower pulley block, a lower pulley line 8 of the lower pulley block and a first line joint 12 of the lower pulley block.

[0120] The upper pulley assembly comprises an upper pulley block vertical hook pair 1, an upper pulley block upper pulley line 5, an upper pulley block 3, an upper pulley block lower pulley line 6 and an upper pulley block first line joint 11.

[0121] The upper pulley block vertical hook pair 1 and the lower pulley block vertical hook pair 2 are respectively movably arranged in the upper pulley block vertical hook slot section and the lower pulley block vertical hook slot section; the upper pulley block 3 and the lower pulley block 7 are respectively movably arranged in the upper pulley block pulley slot section and the lower pulley block pulley slot section; the upper pulley block 3 and the lower pulley block 7 are stacked in an up-and-down staggered manner in the double-layer pulley block groove plate.

[0122] The two ends of the upper pulley line 5 of the upper pulley block pass around the lower edge of the upper pulley of the upper pulley block 3 and then go up through the upper pulley line groove section of the upper pulley block and are respectively connected to the two vertical hooks of the upper pulley block vertical hook pair 1; the two ends of the lower pulley line 6 of the upper pulley block pass around the upper edge of the lower pulley of the upper pulley block 3 and then are respectively led downward through the lower pulley line groove section of the upper pulley block; the upper pulley block first line joint 11 is connected to one of the ends of the lower pulley line 6 of the upper pulley block led downward.

[0123] The two ends of the upper pulley line 4 of the lower pulley block bypass the lower edge of the upper pulley of the lower pulley block 7 and then go upward through the line groove section of the upper pulley of the lower pulley block and are respectively connected to the two vertical hooks of the lower pulley block vertical hook pair 2; the two ends of the lower pulley line 8 of the lower pulley block bypass the upper edge of the lower pulley of the lower pulley block 7 and then are respectively led downward through the line groove section of the lower pulley of the lower pulley block; the first line joint 12 of the lower pulley block is connected to one of the ends of the lower pulley line 8 of the lower pulley block led downward.

[0124] Pulley block: refers to the movable pulley block, which includes two upper and lower pulleys; the fixed pulley can change the direction of force, and the movable pulley can have two functions, namely saving effort and shortening the stroke. The pulley block mainly shortens the stroke in the needle selection unit, that is, the stroke of the pulley block is 1 / 2 of the knife lifting stroke, which is equivalent to the upper pulley of the pulley block "storing" 1 / 2 of the knife lifting stroke, and then releasing it through the lower pulley. The three-position / multi-position uses this principle. The upper pulley line is in parallel, and the lower pulley line is in series. The lower pulley line can release the stroke "stored" by multiple upper pulleys.

[0125] Pulley line: The line acting on the pulley, there are two sections of pulley line, the one acting on the upper pulley is called the upper pulley line, and the one acting on the lower pulley is called the lower pulley line. Usually in the movable pulley group, the upper pulley line is the driving side, and the lower pulley line is the output side, connected to the load. In the present invention, the vertical hook connected to the end of the upper pulley line is driven by the lifting knife, one end of the lower pulley line is fixed, and the other end is the "head line", which connects the harness and heald, controls the up and down movement of the warp yarn, and is the load.

[0126] The pulley block can be installed with ball bearings or sliding bearings. Under the current pulley block structure, the load-bearing effect of ball bearings is significantly better than that of sliding bearings. However, ball bearings are limited by the balls and bearing brackets and are difficult to reduce in thickness. The pulley line itself is thin, and the space occupied by its line groove is also thin. The present invention arranges the thicker pulley assembly and the thinner pulley line groove in a left-right corresponding and complementary manner, and the two thicker pulley assemblies are stacked and staggered up and down, thereby achieving a high-density arrangement of the thicker ball bearing pulley block. This solution can also be well adapted to high-speed and high-load occasions.

[0127] Example 7

[0128] On the basis of Example 5 and Example 6, the present invention further provides a needle selector assembly, which is a double-acting needle selector assembly and is equipped with the double-layer pulley block disclosed above.

[0129] Example 8

[0130] On the basis of Example 7, the present invention further provides a jacquard machine, which is equipped with the needle selector assembly disclosed above.

[0131] 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 double-layer pulley block groove plate, characterized in that: It comprises a second substrate (10), a first substrate (9), and a second substrate (10) which are sequentially assembled from left to right, or a first substrate (9), a second substrate (10), and a first substrate (9) which are sequentially assembled from left to right; The groove shape on the right side of the second substrate (10) is combined with the groove shape on the left side of the first substrate (9) to form an upper pulley assembly functional layer, and the upper pulley block functional layer is divided into four functional sections from top to bottom: an upper pulley block vertical hook slide groove section, an upper pulley block upper pulley line groove section, an upper pulley block pulley slide groove section, and an upper pulley block lower pulley line groove section; The groove shape on the right side of the first substrate (9) and the groove shape on the left side of the second substrate (10) are assembled to form a lower pulley assembly functional layer, and the lower pulley assembly functional layer is divided into four functional sections from top to bottom: a lower pulley assembly vertical hook slide groove section, a lower pulley assembly upper pulley line groove section, a lower pulley assembly pulley slide groove section, and a lower pulley assembly lower pulley line groove section; The upper pulley assembly functional layer and the lower pulley assembly functional layer are overlapped with each other on the left and right sides relative to the first substrate (9) or the second substrate (10), and the upper pulley block vertical hook slide groove section corresponds to the left and right positions of the lower pulley block vertical hook slide groove section and has the same thickness; the upper pulley block pulley slide groove section corresponds to the left and right positions of the upper pulley line groove section of the lower pulley block, and the thickest pulley block bracket section of the upper pulley block pulley slide groove section is located at the center of the groove plate, and the upper pulley line groove section of the lower pulley block ... upper pulley line groove section of the lower pulley block is located at the center of the groove plate, and the upper pulley line groove section of the upper pulley line groove section of the lower pulley block is located at the center of the groove plate, and the upper pulley line groove section of the upper pulley line groove section of the lower pulley block is located at the center of the groove plate, and the upper pulley line groove section of the upper The groove sections are located on both sides of the groove plate and can be nested without conflict in space; the lower pulley line groove section of the upper pulley block corresponds to the left and right positions of the pulley slide groove section of the lower pulley block, and the lower pulley line groove section of the upper pulley block is located on both sides of the groove plate and does not conflict with the pulley block bracket section of the pulley slide groove section of the lower pulley block located at the center of the groove plate; the pulley slide groove section of the upper pulley block has the same thickness as the pulley slide groove section of the lower pulley block and is designed to be stacked in an up-and-down offset manner on the left and right sides.

2. The double-layer pulley block groove plate according to claim 1, characterized in that: The first substrate (9) and the second substrate (10) are both plastic parts that are molded by one-step injection molding. The left and right sides of the first substrate (9) and the second substrate (10) are respectively provided with buckles. The right side of the second substrate (10) and the left side of the first substrate (9) are superimposed and spliced ​​through the corresponding buckles, and the right side of the first substrate (9) and the left side of the second substrate (10) are superimposed and spliced ​​through the corresponding buckles.

3. The double-layer pulley block groove plate according to claim 1, characterized in that: When the second substrate (10), the first substrate (9), and the second substrate (10) are assembled, the first substrate (9) located in the middle is used as the central substrate, and two sets of electromagnet and armature hook installation positions stacked up and down are arranged on the top of the first substrate (9), and heat sinks corresponding to the positions of the corresponding electromagnets are respectively arranged on the tops of the two second substrates (10) located on the two sides; When the first substrate (9), the second substrate (10), and the first substrate (9) are assembled, the second substrate (10) located in the middle is used as the central piece. At this time, two groups of electromagnets and armature hook installation positions stacked up and down are arranged on the top of the second substrate (10), and heat sinks corresponding to the positions of the corresponding electromagnets are respectively arranged on the tops of the two first substrates (9) located on both sides.

4. The double-layer pulley block groove plate according to claim 1, characterized in that: The groove types on the left side of the first substrate (9) are, from top to bottom, the first half-side sliding groove (901) of the vertical hook of the upper pulley block, the first half-side wire groove (902) of the upper pulley line of the upper pulley block, the first half-side sliding groove (903) of the pulley of the upper pulley block, and the first half-side wire groove (904) of the lower pulley line of the upper pulley block; the groove types on the right side of the second substrate (10) are, from top to bottom, the second half-side sliding groove (1001) of the vertical hook of the upper pulley block, the second half-side wire groove (1002) of the upper pulley line of the upper pulley block, the second half-side sliding groove (1003) of the pulley of the upper pulley block, and the second half-side wire groove (1004) of the lower pulley line of the upper pulley block; When the right side surface of the second substrate (10) and the left side surface of the first substrate (9) are spliced ​​left and right, the second half-side chute (1001) of the upper pulley block vertical hook and the first half-side chute (901) of the upper pulley block vertical hook are spliced ​​left and right to form the upper pulley block vertical hook chute section, the second half-side line groove (1002) of the upper pulley line of the upper pulley block and the first half-side line groove (902) of the upper pulley line of the upper pulley block are spliced ​​left and right to form the upper pulley line line groove section of the upper pulley block, the second half-side chute (1003) of the pulley of the upper pulley block and the first half-side chute (903) of the pulley of the upper pulley block are spliced ​​left and right to form the upper pulley block pulley chute section, and the second half-side line groove (1004) of the lower pulley line of the upper pulley block and the first half-side line groove (904) of the lower pulley line of the upper pulley block are spliced ​​left and right to form the lower pulley line line groove section of the upper pulley block. The groove types on the right side of the first substrate (9) are, from top to bottom, the first half-side groove (905) of the vertical hook of the lower pulley group, the first half-side groove (906) of the upper pulley line of the lower pulley group, the first half-side groove (907) of the pulley of the lower pulley group, and the first half-side groove (908) of the lower pulley line of the lower pulley group; the groove types on the left side of the second substrate (10) are, from top to bottom, the second half-side groove (1005) of the vertical hook of the lower pulley group, the second half-side groove (1006) of the upper pulley line of the lower pulley group, the second half-side groove (1007) of the pulley of the lower pulley group, and the second half-side groove (1008) of the lower pulley line of the lower pulley group; When the right side surface of the first substrate (9) and the left side surface of the second substrate (10) are spliced ​​left and right, the first half side groove (905) of the lower pulley assembly vertical hook and the second half side groove (1005) of the lower pulley assembly vertical hook are spliced ​​left and right to form the lower pulley assembly vertical hook groove section, the first half side groove (906) of the upper pulley line of the lower pulley assembly and the second half side groove (1006) of the upper pulley line of the lower pulley assembly are spliced ​​left and right to form the upper pulley line groove section of the lower pulley assembly, the first half side groove (907) of the lower pulley assembly pulley and the second half side groove (1007) of the lower pulley assembly pulley are spliced ​​left and right to form the lower pulley assembly pulley groove section, and the first half side groove (908) of the lower pulley line of the lower pulley assembly and the second half side groove (1008) of the lower pulley line of the lower pulley assembly are spliced ​​left and right to form the lower pulley line groove section of the lower pulley assembly.

5. The double-layer pulley block groove plate according to claim 4, characterized in that: Positioning notches (13) for judging whether the two are correctly joined are respectively arranged on the lower side end surface of the first substrate (9) and the lower side end surface of the second substrate (10); when the first substrate (9) and the second substrate (10) are joined together with the correct side grooves, the positioning notch (13) on the first substrate (9) and the positioning notch (13) on the second substrate (10) are joined on the left and right.

6. The double-layer pulley block groove plate according to claim 1, characterized in that: The second substrate (10) and the first substrate (9) are assembled together to form an A-type single-layer slot plate section; the slot in each of the A-type single-layer slot plate sections can accommodate a set of upper pulley assemblies and corresponds to a needle selection unit; A plurality of identical A-type single-layer slot plate sections are stacked in sequence from left to right and then a second substrate (10) is assembled on the rightmost side to form a set of A-type multi-layer slot plate components. The slots formed between two adjacent A-type single-layer slot plate sections can accommodate a set of lower pulley components and each corresponds to a needle selection unit. Thus, a set of the A-type multi-layer slot plate components can correspond to multiple needle selection units to meet the needs of the needle selector component; Alternatively, the first substrate (9) and the second substrate (10) are assembled from left to right to form a B-type single-layer slot plate section; each of the B-type single-layer slot plate sections can accommodate a set of lower pulley assemblies and corresponds to a needle selection unit; A plurality of identical B-type single-layer slot plate sections are stacked in sequence from left to right and then a first substrate (9) is assembled on the rightmost side to form a group of B-type multi-layer slot plate components. The slots formed between two adjacent B-type single-layer slot plate sections can accommodate a group of upper pulley components and correspond to a needle selection unit. Thus, a group of the B-type multi-layer slot plate components can correspond to multiple needle selection units to meet the needs of the needle selector component.

7. The double-layer pulley block groove plate according to claim 6, characterized in that: The upper, middle and lower parts of the first substrate (9) and the second substrate (10) are respectively provided with fixing sections, each of which is provided with a through hole (14). After a plurality of the A-type single-layer slot plate sections or a plurality of the B-type single-layer slot plate sections are stacked, they are fixed by means of the cooperation of fasteners with the through holes (14).

8. A double-layer pulley block, characterized in that: A double-layer pulley block groove plate as claimed in any one of claims 1 to 7, and an upper pulley assembly and a lower pulley assembly; The upper pulley assembly comprises an upper pulley block vertical hook pair (1), an upper pulley block upper pulley line (5), an upper pulley block (3), a lower pulley line (6) on the upper pulley block and an upper pulley block first line joint (11); The lower pulley assembly comprises a lower pulley assembly vertical hook pair (2), a lower pulley assembly (7), an upper pulley line (4) of the lower pulley assembly, a lower pulley line (8) of the lower pulley assembly and a first line joint (12) of the lower pulley assembly; The upper pulley block vertical hook pair (1) and the lower pulley block vertical hook pair (2) are respectively movably arranged on the upper pulley block vertical hook slot section and the lower pulley block vertical hook slot section; the upper pulley block (3) and the lower pulley block (7) are respectively movably arranged on the upper pulley block pulley slot section and the lower pulley block pulley slot section; the upper pulley block (3) and the lower pulley block (7) are stacked in an up-and-down staggered manner in the double-layer pulley block groove plate; The two ends of the upper pulley line (5) of the upper pulley block go around the lower edge of the upper pulley of the upper pulley block (3) and then go upward through the upper pulley line groove section of the upper pulley block to be connected to the two vertical hooks of the upper pulley block vertical hook pair (1); the two ends of the lower pulley line (6) of the upper pulley block go around the upper edge of the lower pulley of the upper pulley block (3) and then go downward through the lower pulley line groove section of the upper pulley block; the upper pulley block first line connector (11) is connected to one end of the lower pulley line (6) of the upper pulley block that is led downward; The two ends of the upper pulley line (4) of the lower pulley block go around the lower edge of the upper pulley of the lower pulley block (7) and then go upward through the upper pulley line groove section of the lower pulley block to be connected to the two vertical hooks of the lower pulley block vertical hook pair (2); the two ends of the lower pulley line (8) of the lower pulley block go around the upper edge of the lower pulley of the lower pulley block (7) and then go downward through the lower pulley line groove section of the lower pulley block; the first line connector (12) of the lower pulley block is connected to one of the ends of the lower pulley line (8) of the lower pulley block that is led downward.

9. A needle selector assembly, characterized in that: The needle selector assembly is equipped with a double-layer pulley block as described in any one of claim 8.

10. A jacquard machine, characterized in that: The jacquard machine is equipped with the needle selector assembly according to claim 9.

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