CN110923894A - Electromagnetic needle lifting unit for electronic jacquard machine and electromagnetic needle lifting unit assembly - Google Patents

Abstract

The invention discloses an electromagnetic needle lifting unit and an electromagnetic needle lifting unit assembly for an electronic jacquard, which comprise a substrate, an electromagnet, two sliding hooks and two flexible reeds, wherein the two sliding hooks and the two flexible reeds are respectively fixedly positioned on the substrate; the hook head and the hook body of each sliding hook are respectively provided with a first curved surface and a second curved surface which can rigidly abut against the flexible spring, and the second curved surface is more deviated from the axis of the hook body than the first curved surface; the back sliding surface of the hook body part is matched with the side inner wall of the hook body part slideway in a sliding way. The unit has good durability and high action reliability, and the assembly formed by fixing the unit and the two end cover plates has low sealing requirement, no sliding and small longitudinal dimension.

Description

Electromagnetic needle lifting unit for electronic jacquard machine and electromagnetic needle lifting unit assembly

[ technical field ] A method for producing a semiconductor device

The invention relates to an electromagnetic needle lifting unit and an electromagnetic needle lifting unit assembly for an electronic jacquard machine, and belongs to the technical field of electronic jacquard machines.

[ background of the invention ]

At present, the needle lifting assembly used by electronic jacquard machines at home and abroad has the lifting heald principle and the structure mode generally as shown in figures 8, 9 and 10, the upper end of the swing hook is attracted and separated by the magnetism release and the magnetism break of the electromagnet 2 to generate the reciprocating swing of the swing hook, thereby realizing the hook connection fixing and the release hook connection of the lower end of the swing hook to the sliding hook. The assembly of the needle lifting units of the needle lifting assembly is as follows:

the electromagnet 2, the pressure spring K', the pressure spring K, the fixed seat 91, the rope guide seat 90 and the like are all arranged on the amplitude plate 1; the swing hooks 3 'and 3 are respectively and rotatably arranged on the fulcrum shafts 10' and 10 of the web 1; the sliding hooks 4 'and 4 are respectively installed on the curved slideways II 13' and 13 of the amplitude plate 1 in a curve sliding manner; the pulley block 8 is arranged on a long sliding hole 15 formed in the amplitude plate 1; the upper sliding rope 7 goes around the upper pulley of the pulley block 8, and both ends of the upper sliding rope are respectively connected with the sliding hooks 4' and 4, the lower sliding rope 9 goes around the lower pulley of the pulley block 8, one end of the lower sliding rope 9 is fixed on the fixed seat 91, and the other end of the lower sliding rope 9 passes through the rope guide seat 90 and is connected with the weaving harness cord through the joint 92 of the rope guide seat. Wherein, the inner side surface 31 'at the upper end of the swinging hook 3' can be used for sucking the suction head 21 'of the electromagnet 2, the inner side surface 31' at the upper end is provided with a clamping foot 32 'for installing the pressure spring K', the inner side surface 31 at the upper end of the swinging hook 3 can be used for sucking the suction head 21 of the electromagnet 2, and the inner side surface 31 at the upper end is provided with a clamping foot 32 for installing the pressure spring K; the pivoting parts of the swinging hook 3 ' are respectively provided with a shaft hole 30 ' and a convex arc-shaped contact surface 300 ', the convex arc-shaped contact surface 300 ' is contacted with the contact foot 22 ' of the electromagnet 2, similarly, the pivoting parts of the swinging hook 3 are respectively provided with a shaft hole 30 and a convex arc-shaped contact surface 300, and the convex arc-shaped contact surface 300 is contacted with the contact foot 22 of the electromagnet 2; the sliding hooks 4 'and 4 have push-assisting tabs 41', 41, respectively. In the operation process of the electronic jacquard machine, the griffes N' and N move up and down alternately due to mechanical drive.

When the griffe is not required to drive the sliding hook up and down, as in the swinging hook 3' state in fig. 9: when the electromagnet 2 is powered off and does not generate magnetic attraction, under the action of the pre-elasticity of the pressure spring K ', the swing hook 3 ' rotates around the fulcrum shaft 10 ' until the outer side surface of the upper end of the swing hook 3 ' abuts against the side surface of the web 1, then the inner side surface 31 ' of the upper end of the swing hook 3 ' is separated from the electromagnet 2, the hook part of the lower end of the swing hook 3 ' is firmly hooked with the hook part of the upper end of the sliding hook 4 ' which enters the curved sliding groove I12 ', and thus the sliding hook 4 ' is hooked and separated from the lifting knife N '.

When the lifting knife is required to drive the sliding hook to move up and down, as shown in the state of the swinging hook 3 in fig. 9: when the electromagnet 2 is electrified to generate magnetic attraction, the lifting knife N continuously moves upwards for 3-5 mm after contacting with the sliding hook 4 (at this time, the upper hook part of the sliding hook 4 enters the curve sliding groove I12), the boosting sheet 41 of the sliding hook 4 continuously pushes the lower hook part of the swinging hook 3 (as shown in fig. 10), so that the upper hook part of the sliding hook 4 is longitudinally separated from the lower hook part of the swinging hook 3, the pressure spring K is yielded under the combined action of the magnetic attraction of the electromagnet 2, the swinging hook 3 rotates around the fulcrum shaft 10, the inner side surface 31 of the upper end of the swinging hook 3 is in an attraction state with the electromagnet 2, the upper hook part of the sliding hook 4 is transversely separated from the lower hook part of the swinging hook 3, and the sliding hook 4 is in a free state and hung on the lifting knife N and reciprocates up and down along with the lifting knife N.

To sum up, it can be seen that this principle and structure are all comparatively complicated, for example above-mentioned swing hook shape is tortuous changeable, the boosting piece that above-mentioned slip colluded is complicated, leads to making the difficulty to and swing hook and above-mentioned pressure spring cooperation installation inefficiency take time, and have following technological not enough:

a plurality of movable parts (such as the fulcrum shafts and the boosting sheets and the like) in the needle lifting assembly are manually smeared with grease for lubrication, and the lubricating effect is influenced after the lubricating grease is stained with impurities such as flying and the like, so that the needle lifting assembly has high sealing requirement, and the fulcrum shafts are still easy to wear under the working conditions of high speed, high temperature and low heat dissipation.

When the needle lifting assembly operates at a high speed, the electromagnet has high heat dissipation requirements, otherwise the electromagnet is easy to damage, and the contradiction between heat dissipation and sealing is difficult to consider exists.

The suction head and the inner side surface of the upper end of the swing hook are in a rigid and high-frequency knocking type suction mode, so that the hitting abrasion is easy to generate, and after the abrasion, the swing hook is not effectively sucked to generate the defects of the woven fabric.

The boosting sheet of the sliding hook is easy to generate fatigue fracture under the high-frequency working condition: the sliding hook is in hooking and disengaging with the hooking action, the boosting sheet of the sliding hook is deformed in a high-frequency 'forced' mode, the elasticity of the boosting sheet is weakened after fatigue damage, and even the boosting sheet is broken, so that the boosting sheet is usually a 'weak structure part', and production practices also find that: elasticity of the boosting piece is attenuated at low temperature, so that normal action performance of the boosting piece is influenced, for example, the boosting piece stops for more than half a day and then starts to run, and large-area weaving defects (abnormal interweaving) of the fabric are caused due to weak elasticity of the boosting piece.

The whole needle lifting component has larger longitudinal dimension (seen from the front shed and the back shed), correspondingly causes the large longitudinal dimension of the jacquard machine with the determined needle number specification, is not beneficial to the manufacture of the jacquard machine with large needle number and super large needle number, and influences the effective utilization of the space of the whole machine: the pressure spring occupies the longitudinal space for installing the needle lifting assembly, the sliding hook is installed in a sliding manner, the hook-hook joint structure causes the space required by the large swinging action of the swinging hook, the swinging hook needs to be additionally provided with a clamping foot for installing the pressure spring, the swinging hook needs to be provided with a shaft hole and a convex arc-shaped contact surface, and the structures all occupy the actual comprehensive space of the needle lifting assembly in a large amount.

[ summary of the invention ]

In order to overcome the defects of the prior art, the invention provides an electromagnetic needle lifting unit and an electromagnetic needle lifting unit assembly for an electronic jacquard, wherein the electromagnetic needle lifting unit has the advantages of simple structure, easy processing, good durability and high action reliability, and the electromagnetic needle lifting unit assembly has low sealing requirement and small longitudinal size.

An electromagnetic needle lifting unit for an electronic jacquard machine comprises a substrate, an electromagnet and two sliding hooks, wherein the electromagnet and the two sliding hooks are fixed on the substrate, the two sliding hooks respectively comprise a rod body part and a hook body part, the head ends of the two hook body parts respectively form hook heads, the bottom surfaces of the two hook body parts respectively supply a push bearing surface for pushing a knife which alternately moves up and down, the two rod body parts are respectively vertically and slidably installed on the substrate, the two hook heads correspond to each other, and the improvement point is as follows: the flexible reeds are arranged on two sides of the electromagnet and fixedly arranged on the substrate in a positioning mode respectively, the flexible reeds extend along the length direction of the substrate and extend into corresponding hook part slideways arranged on the substrate respectively, the two flexible reeds are abutted by means of corresponding limiting bodies arranged on the substrate respectively, each limiting body is positioned on the outer side of the magnetizer and on the moving path of the corresponding flexible reed, and each flexible reed extending into the hook part slideways is provided with a hanging hole and a bending curved surface of which the bending direction faces the electromagnet; the hook head and the hook body of each sliding hook are respectively provided with a first curved surface and a second curved surface which can be in rigid collision action on the corresponding flexible spring, and the second curved surface is more deviated from the axis of the hook body than the first curved surface; the hook body part of each sliding hook can move into the corresponding hook body part slide way, and the back slide surface of the hook body part is in sliding fit with the side wall of the hook body part slide way in a vertical surface mode.

The bending curved surface is only formed at the bottom of the flexible reed, and the hanging hole is positioned on the bending curved surface and is adjacent to the bending curved surface.

In order to facilitate the hook body to stably load/unload the flexible reed when the hook body enters/exits the hook body slide way, the bending curved surface does not penetrate through the hook body slide way.

The flexible reeds are respectively provided with a positioning hole and a fastening hole at the upper part thereof, the base plate is provided with a positioning part and a screw hole at the upper part thereof, and each flexible reed is arranged on the positioning part through the positioning hole and is fixed with the base plate through a fastening piece.

After the structure is adopted, the fixing precision of the flexible spring is high, so that the station precision is improved, and compared with the known pivoting type swing hook, the mounting space and the moving space are obviously saved.

The suction surfaces of the electromagnet are positioned at two sides of the bottom of the electromagnet, each suction surface faces to a limiting body, and each limiting body is convexly arranged on the inner wall of the corresponding side of the substrate.

The rod body part is vertical and is provided with two parts with different widths and thicknesses, the cross section of the rod body part is of a horizontally-arranged convex-shaped guide sliding rod type structure, the rod body part and the hook body part are in transition to form a vertical guide groove, the base plate is provided with a vertical slide way and a vertical guide rail, the vertical slide way and the vertical guide rail are respectively matched with the rod body part and the vertical guide groove, and the sliding hook is arranged on the base plate in an overhead sliding mode.

The sliding hook which is partially mounted in an overhead sliding manner is adopted, so that the stroke resistance of the sliding hook can be reduced.

The invention also provides an electromagnetic needle lifting unit assembly for the electronic jacquard, which comprises eight electromagnetic needle lifting units as claimed in any one of claims 1 to 6, wherein the eight electromagnetic needle lifting units are sequentially arranged side by side and connected, and end cover plates are respectively fixed on two sides of each electromagnetic needle lifting unit.

The invention adopts the interaction of the positioning and fixed flexible reed and the sliding hook in the vertical moving state, the flexible reed with controllable size precision and simple shape is conveniently provided with the hanging hole and the bending curved surface, and the sliding hook is easy to be provided with the first curved surface and the second curved surface. The first curved surface and the second curved surface are used for rigid loading and abutting against the flexible reed for actuation, the first curved surface is designed to enable the moving stroke path to be positioned on the sliding hook near the top dead center, the hook head of the sliding hook is hooked into the hook hole, on the basis, the forming measure of the second curved surface can enable the flexible reed to contact the electromagnet with extremely small deformation offset amplitude and almost zero clearance when the sliding hook reaches the top dead center, the magnetic attraction force required by the electromagnet is small, so that the light flexible reed can be attracted by the magnetic force generated by extremely weak current, and the flexible reed and the sliding hook are separated from hooking; along with the next weaving cycle, the sliding hook tends to move towards the stroke of the lower dead point, the second curved surface and the first curved surface gradually and sequentially quit and collide with the flexible reed, and the flexible reed can reliably contact and stick to the limiting body with small inertia to stop static after being unloaded and moved back.

The needle lifting assembly (such as the flexible spring plate and the sliding hook) has the advantages of no lubrication and extremely low part abrasion, and can be designed in a relatively open mode which is favorable for ventilation due to low sealing requirement of the assembly, and heat dissipation of the electromagnet, the flexible spring plate and the sliding hook in the assembly is implemented.

The flexible reed is not worn, the sliding hook which generates working heat at high action frequency is durable under the working conditions of low sealing and good ventilation, and the fatigue wear and the fracture are eliminated.

The use of the flexible reed can save a pair of pressure spring parts and the space occupied by the assembly of the pressure spring, and abandon the inefficient assembly of the pressure spring and the swing hook; obviously, the thickness of the flexible reed is greatly smaller than the circumferential width of the known swing hook, and the flexible reed only occupies a narrow moving space through the structural form that the flexible reed is connected with the sliding hook through the hanging hole; the sliding hook in the vertical moving state can improve the sliding precision in the stroke and the loading interference precision of the flexible reed, and compared with the existing sliding hook which is installed in a curve sliding manner, the sliding hook only occupies a smaller running space on the base plate, so that the longitudinal dimension of the whole needle lifting assembly is greatly reduced, and the manufacturing of a jacquard with large needle number specifications is facilitated.

[ description of the drawings ]

FIG. 1(a) is an isometric view of an electromagnetic needle raising unit for an electronic jacquard machine of the present invention, and (b) is a two-dimensional view;

fig. 2(a) is a two-dimensional partial view of a first operating state of the electromagnetic needle raising unit of the present invention (showing the slide hook 4 being in the ascending stroke), (b) is a two-dimensional partial enlarged view of another operating state of the electromagnetic needle raising unit of the present invention (showing the slide hook 4 having reached the top dead center position);

FIG. 3(a) is a perspective view of a flexible spring of the present invention, and (b) is a front view of the flexible spring;

FIG. 4(a) is a perspective view of the sliding hook of the present invention, and (b) is another perspective view of the sliding hook;

FIG. 5 is a front view of the sliding hook of the present invention;

FIG. 6 is a cross-sectional view taken along line I-I of FIG. 5;

FIG. 7(a) is a front view of the electromagnetic lifting pin assembly for an electronic jacquard machine of the present invention, (b) is a right side view, and (c) is a left side view;

fig. 7A is a perspective view of an electromagnetic lifting pin assembly for an electronic jacquard machine of the present invention, and,

FIG. 8 is an isometric view of a prior art electromagnetic needle raising unit for an electronic jacquard machine;

FIG. 9 is a two-dimensional view of a prior art electromagnetic needle raising unit for an electronic jacquard machine;

fig. 10 is an enlarged view of a portion a in fig. 9.

[ detailed description ] embodiments

Referring to fig. 1-6, an electromagnetic needle lifting unit for an electronic jacquard machine is mainly composed of a substrate 1, an electromagnet 2 fixed on the substrate 1, a sliding hook 4 ' and a rope connecting pulley block, wherein the sliding hook 4 includes a hook portion 5 and a rod portion 6, the sliding hook 4 ' includes a hook portion 5 ' and a rod portion 6 ', the head end of the hook portion 5 forms a hook 51, the head end of the hook portion 5 ' forms a hook 51 ', the bottom surface 5b of the hook portion 5 and the bottom surface 5b ' of the hook portion 5 ' are respectively used as a pushing surface for pushing a knife N, N ' which alternately moves up and down, the rod portions 6 and 6 ' are respectively vertically and slidably mounted on the substrate 1, and the hook 51 ' are corresponding to each other.

The pulley block 8 mainly comprises an upper pulley 81, a lower pulley 82 and a pulley bracket 80 movably connected with the upper pulley 81 and the lower pulley 82, the pulley bracket 80 is slidably mounted in a bracket long sliding hole 15 formed in the base plate 1, two ends of the upper pulley 7 slidably matched with the upper pulley 81 are respectively connected with a sliding hook 4 and a sliding hook 4', specifically injection-molded and connected, one end of the lower pulley 9 slidably matched with the lower pulley 82 is connected with the fixed seat 91, the other end of the lower pulley 9 penetrates through the rope guide 90 and is fixedly connected with the joint 92, specifically injection-molded and connected, and the fixed seat 91 and the rope guide 90 are respectively clamped on two sides of the bottom end part of the base plate 1.

The electromagnetic needle lifting unit of the electronic jacquard machine also comprises flexible reeds 3 and 3 'which are arranged at two sides of the electromagnet 2, the flexible reeds 3 and 3' are respectively fixedly arranged on the substrate 1 in a positioning way, the flexible reeds 3 extend along the length direction of the substrate 1 and extend into a hook part slide way 12 arranged on the substrate 1, the flexible reeds 3 'also extend along the length direction of the substrate 1 and extend into a hook part slide way 12' arranged on the substrate 1, the flexible reeds 3 and 3 'are respectively abutted by corresponding limiting bodies 11 and 11' which are respectively arranged on the substrate 1 before and after flexible deformation, the limiting body 11 is positioned at the right outer side of the electromagnet 2 and on the moving path of the flexible reed 3, the limiting body 11 'is positioned at the left outer side of the electromagnet 2 and on the moving path of the flexible reed 3', the flexible reed 3 extending into the hook part slide way 12 is provided with a hanging hole 31 and a bending curved surface 32 with the bending direction facing the electromagnet 2, the flexible spring 3 'extending into the hook body slide way 12' is also provided with a hanging hole 31 'and a bending curved surface 32' with the bending direction facing the electromagnet 2.

The hook head 51 and the hook body part 5 of the sliding hook 4 are provided with a first curved surface 510 and a second curved surface 52 which can rigidly abut against and act on the flexible reed 3, the second curved surface 52 is more deviated from the axis of the hook body part 5 than the first curved surface 510, the hook head 51 ' and the hook body part 5 ' of the sliding hook 4 ' are also provided with a first curved surface 510 ' and a second curved surface 52 ' which can rigidly abut against and act on the flexible reed 3 ', and the second curved surface 52 ' is more deviated from the axis of the hook body part 5 ' than the first curved surface 510 ';

the hook body 5 of the sliding hook 4 can move into the corresponding hook body slide way 12, and the back slide surface 5a of the hook body 5 is in sliding fit with the side wall 120 of the hook body slide way 12 in a vertical surface manner, and similarly, the hook body 5 ' of the sliding hook 4 ' can move into the corresponding hook body slide way 12 ', and the back slide surface 5a ' of the hook body 5 ' is in sliding fit with the side wall 120 ' of the hook body slide way 12 ' in a vertical surface manner.

In detail, the electromagnet 2 is fixed on the upper part of the longer base plate 1; the flexible reeds 3 and 3' are respectively positioned and fixed on the upper part of the substrate 1.

The curved surfaces 32, 32' being formed only in the flexible spring 3Bottom partOf flexible spring 3Bottom partThe hanging hole 31 is located on the curved surface 32 and adjacent to the curved surface, and the hanging hole 31 'is also located on the curved surface 32' and adjacent to the curved surface. The curved surfaces 32, 32 'do not penetrate the hook portion slideways 12, 12', respectively. The flexible spring 3 is provided with a positioning hole 30 and a fastening hole 300 at the upper part thereof, the flexible spring 3 ' is provided with a positioning hole 30 ' and a fastening hole 300 ' at the upper part thereof, the substrate 1 is provided with a positioning part 10, a screw hole (not visible in the figure) and a positioning part 10 ' and a screw hole at both sides of the upper part thereof, the flexible spring 3 is mounted on the positioning part 10 through the positioning hole 30 and fixed with the substrate 1 through a fastener S (hexagon socket head cap screw), and the flexible spring 3 ' is also mounted on the positioning part 10 ' through the positioning hole 30 ' and fixedly connected with the substrate 1 through the fastener S.

The flexible reed structure and the single-end positioning and fixing structure thereof not only have no lubrication in actual operation, but also can realize the lengthening design, the length is only required to be not penetrated out of the slide way of the hook body part, and the first curved surface and the second curved surface of the sliding hook are matched in the ascending process, the first curved surface is only pressed against the bending curved surface, and when the sliding hook near the top dead center is hooked into the hanging hole, the flexible reed is only slightly deformed; the second curved surface further has a slight loading effect, the second curved surface can just move over the bent curved surface and touch the outer wall of the vertical surface of the flexible reed when the sliding hook reaches the top dead center, the deformation offset amplitude of the flexible reed at the moment is only 1-2 mm, the flexible reed can touch the electromagnet with almost zero clearance, and if the electromagnet needs to attract the flexible reed, only the deformation restoring force of 1-2 mm of the flexible reed needs to be overcome.

The attraction surfaces 21 and 21 'of the electromagnet 2 are positioned at two sides of the bottom of the electromagnet 2, the attraction surface 21 and the attraction surface 21' face the limiting bodies 11 and 11 'respectively, the limiting bodies 11 are formed by protruding from the inner walls of the corresponding sides (right side in the figure) of the base plate, and the limiting bodies 11' are formed by protruding from the inner walls of the corresponding sides (left side in the figure) of the base plate.

As can be seen in the figure, the flexible spring 3 passes through the space between the limiting body 11 and the suction surface 21 to enter the hook body part slideway 12, and the flexible spring 3 'passes through the space between the limiting body 11' and the suction surface 21 'to enter the hook body part slideway 12'.

The rod body part 6 is vertical and is provided with two parts with different widths and thicknesses, the cross section of the rod body part 6 is of a horizontally-arranged convex-shaped guide sliding rod type structure, vertical guide grooves 5-6 are formed between the rod body part 6 and the hook body part 5 in a transition mode, a vertical slide way 13 and a vertical guide rail 14 which are respectively matched with the rod body part 6 and the vertical guide grooves 5-6 are arranged on the base plate 1, and the sliding hook 4 is partially arranged on the base plate 1 in an overhead sliding mode.

Specifically, the rod portion 6 can be divided into a wider and thicker rod portion 63 and a narrower and thinner rod portion 64, the rod portion 63 is slidably mounted on the concave vertical sliding track 13, the rod portion 64 is naturally transited to the vertical guiding groove 5-6, and the rod portion 64 and the vertical guiding groove 5-6 are slidably mounted on the vertical guiding rail 14.

Similarly, the rod body 6 ' is vertical and has two parts with different widths and thicknesses, so that the cross section of the rod body 6 ' is in a horizontal convex-shaped guide sliding rod type structure, the rod body 6 ' and the hook body 5 ' are transited to form vertical guide grooves 5a ' -6a ', and the base plate 1 is provided with vertical slideways 13 ', vertical guide rails 14 ' and sliding hooks 4 ' which are respectively matched with the rod body 6 ' and the vertical guide grooves 5a ' -6a and are arranged on the base plate 1 in a partially overhead sliding manner.

In detail, the rod portion 6 'can be divided into a wider and thicker rod portion 63' and a narrower and thinner rod portion 64 ', the rod portion 63' is slidably disposed on the concave vertical slideway 13 ', the rod portion 64' is naturally transited to the vertical guiding grooves 5a '-6 a', and the rod portion 64 'and the vertical guiding grooves 5 a' -6a 'are slidably disposed on the convex vertical guiding rail 14'.

The parts arranged on the electromagnetic needle lifting unit are basically arranged along a base plate 1 of the electromagnetic needle lifting unit as a central vertical line, for example, an electromagnet 2 is fixed on the upper portion of the base plate in the middle, a pulley block 8 is installed on the lower portion of the base plate in the middle and in the lower sliding manner, a flexible reed 3 and a flexible reed 3 'are symmetrically arranged on the upper portion of the base plate, the two flexible reeds are completely identical in structure and size, the universality is favorable for reducing the manufacturing cost and subsequent part management of the whole equipment, a sliding hook 4' and the sliding hook 4 are slidably installed on two sides of the base plate, wherein a rod body portion 6 and a rod body portion 6 'can respectively slide in the middle of the base plate in a linear manner, a hook body portion 5 and a hook body portion 5' can respectively vertically enter/exit a hook body portion slideway, the two sliding hook structures are completely identical in size.

The positioning part 10, the limiting body 11 and the hook body part slide way 12 are symmetrically arranged on the upper part of the base plate from top to bottom and correspondingly arranged with the positioning part 10 ', the limiting body 11' and the hook body part slide way 12 'from top to bottom in a one-to-one manner, and the hook body part slide way 12' are respectively adjacent to the middle part of the base plate; the vertical slideway 13 and the vertical guide rail 14 are respectively arranged at the lower part of the base plate in symmetry with the vertical slideway 13 'and the vertical guide rail 14'.

The substrate is wider at the part above the hook body slide way, and narrower and equal in width at the part below the hook body slide way.

It should be noted that, when the sliding hook acts on the flexible spring, the active part is the sliding hook having the rigid first curved surface and the rigid second curved surface, and the passive part is the flexible spring.

The flexible reeds 3 and 3' are made of magnetic conductivity materials and are only punched and formed into a single part; the sliding hook 4 'and the sliding hook 4 are made of non-magnetic materials (such as carbon fiber or fiber reinforced plastic materials), and the sliding hook 4' and the sliding hook 4 are rigid (non-elastic) single parts.

The limiting bodies 11 and 11' are both in a convex block shape; the positioning portions 10 and 10 'are respectively and directly molded on the plastic substrate into rectangular bosses, the positioning holes 30 and 30' are matched and processed into square holes, of course, the positioning portions 10 and 10 'can also be processed into D-shaped holes, and the positioning holes 30 and 30' are processed into D-shaped holes, so that the shape is not limited only by the requirement of a positioning function.

The working process of the electromagnetic needle lifting unit when the electromagnetic needle lifting unit runs on the electronic jacquard machine is as follows:

in fig. 1 and 2a, the hook head 51 'of the sliding hook 4' is in the position of the hook hole 31 'hooked on the lower end of the flexible reed 3', in this state, the electromagnet 2 is powered off, the attraction surfaces 21 and 21 'do not generate attraction force, the flexible reed 3' is in a free state and is abutted against the limiting body 11 ', the sliding hook 4' and the lifting knife N 'are in a separated state, and the lifting knife N' alone reciprocates up and down.

In the figure 1, the sliding hook 4 is located in a state of being completely separated from the flexible reed 3, the electromagnet 2 is not electrified, the flexible reed 3 is also in a free state and abuts against the limiting body 11, the sliding hook 4 floats in the vertical slide way 13 and the vertical guide rail 14 of the base plate 1 through the rod body part 6 and the vertical guide grooves 5-6, the bottom surface 5b is combined with the lifting knife N, and at the moment, the sliding hook 4 reciprocates up and down along with the lifting knife N, so that the pulley block 8 is pulled to move up and down through the upper sliding rope 7.

When the weaving process requires that the sliding hook moves up and down along with the lifting knife in each cycle, the sliding hook 4 is taken as an example for explanation: the sliding hook 4 starts from the floating state in fig. 1, and as the lifting knife N pushes upwards to the position state in fig. 2(a), at this time, the first curved surface 510 of the sliding hook 4 starts to contact with the curved surface 32 at the bottom end of the flexible reed 3, the lifting knife N continues to move upwards, the pushing action of the first curved surface 510 of the sliding hook 4 causes the flexible reed 3 to deform, swing towards the middle angular displacement is generated, so that the flexible reed 3 is separated from the limiting body 11, the hook head 51 of the sliding hook 4 slides upwards until completely entering the hanging hole 31 of the flexible reed 3, then the second curved surface 52 of the sliding hook 4 starts to contact with the curved surface 32 of the flexible reed 3, the flexible reed 3 is pushed continuously to swing towards the middle by the larger deformation angular displacement until the second curved surface 52 contacts with the outer vertical surface of the flexible reed 3, and the flexible reed 3 is pushed to the state position in fig. 2(b) (i.e. the dotted line position in fig. 2 (a)), in the state position, the flexible reed 3 and the suction surface 21 of the electromagnet 2 are in a zero limit contact state, and the position of the knife lifter N is the highest position of mechanical drive, namely the sliding hook 4 is at the highest position (top dead center).

When the sliding hook 4 is at the highest position, if necessary, the sliding hook 4 descends along with the lifting knife N and continues to move to enter the next weaving cycle: the electromagnet 2 is electrified to generate attraction force, the flexible reed 3 is attracted to the attraction surface 21 of the electromagnet 2, at this time, the first curved surface 510 of the sliding hook 4 is completely separated from the flexible reed 3, as shown in the state of fig. 2(b), the sliding hook 4 starts to move downwards along with the griffe N, so that the second curved surface 52 of the sliding hook 4 is withdrawn from contact with the flexible reed 3, and the sliding hook 4 floats in the vertical slide way 13 and the vertical guide rail 14 of the substrate 1, moves downwards along with the griffe N, and returns to the position state of the sliding hook 4 in fig. 1.

When the sliding hook 4 is at the highest position, if necessary, the sliding hook 4 does not move along with the griffe N any more, but enters a hooking state as the sliding hook 4': when the sliding hook 4 is at the highest position, the electromagnet 2 is not electrified, no suction force is generated, the sliding hook 4 starts to move downwards along with the griffe N, the flexible reed 3 generates deformation recovery from the bottom end to the outside under the self elastic force, the flexible reed 3 gradually recovers to a free state under the self elastic force along with the gradual push-out of the second curved surface 52 of the sliding hook 4 to contact with the flexible reed 3 until the flexible reed abuts against the limiting body 11 of the substrate 1, in the process, the hook head 51 of the sliding hook 4 is always positioned in the hook hole 31 of the flexible reed 3, the hook head 51 of the sliding hook 4 moves downwards until the hook is hooked at the lower edge of the hook hole 31 of the flexible reed 3, the lifting knife N continues to move downwards, the sliding hook 4 is separated from the lifting knife N, and the lifting knife N independently moves up and down without load, the slide hook 4 is in a hooked state like the slide hook 4' shown in fig. 1 (a).

In the action process, all action components do not need to be lubricated by grease.

Referring to fig. 7 and 7A, eight identical electromagnetic needle lifting units are stacked in parallel in sequence, and an end cover plate 1R and another end cover 1L are respectively stacked and fixed on both sides of the electromagnetic needle lifting units.

Specifically, eight electromagnetism needle lifting units are lifted through five positioning pins (not shown), matched inner angle screws, an end cover plate and another end cover are fixedly connected into an integrated assembly, wherein one end of each positioning pin is provided with an inner angle head, the other end of each positioning pin is provided with a screw hole, the positioning pins sequentially penetrate through a through hole 1R0 of the end cover plate, a through hole 100 of the seven base plates and a through hole 1L0 of the other end cover plate according to corresponding positions, the inner angle screws are screwed down on the positioning pins, and therefore the assembly of the needle lifting assembly is completed, and the eight independent electromagnetism needle lifting units are located between the end cover plate 1R and the end cover plate 1L.

In one end cover plate 1R and the other end cover plate 1L, the longitudinal size of the other part is basically consistent with that of the base plate except for the inverted V-shaped slot part (not marked) with a bottom boss, the part above the hook body part slideway of the one end cover plate 1R and the other end cover plate 1L are respectively wider, and the part below the hook body part slideway of the one end cover plate 1R and the other end cover plate 1L are narrower and equal in width.

It can be seen from fig. 7(b) and (c) that only one end cover plate 1R and the other end cover plate 1L are needed, that is, as shown in fig. 7(b) and (c), in one end cover plate 1R and the other end cover plate 1L, the dimension of the part above the hook part slideway is D, and the dimensions of the part below the hook part slideway are both greatly smaller than the end cover plate of the existing electromagnetic needle lifting assembly.

The electromagnetic needle lift unit assembly referred to herein is known in the industry as the needle lift assembly (MODULE).

Claims (7)

1. A electromagnetism needle raising unit for electronic jacquard, including the base plate, fix electromagnet and two slip on the base plate and collude, two slip collude and include the pole somatic part respectively, collude the somatic part, two head ends that collude the somatic part form respectively and hang the eave tile, two bottom surfaces that collude the somatic part supply the broach push-up face that moves about in turn respectively, two pole body parts do not vertically ground slidable mounting on the base plate, and two are colluded the first mutual correspondence of hook, its characterized in that: the flexible reeds are arranged on two sides of the electromagnet and fixedly arranged on the substrate in a positioning mode respectively, the flexible reeds extend along the length direction of the substrate and extend into corresponding hook part slideways arranged on the substrate respectively, the two flexible reeds are abutted by means of corresponding limiting bodies arranged on the substrate respectively, each limiting body is positioned on the outer side of the magnetizer and on the moving path of the corresponding flexible reed, and each flexible reed extending into the hook part slideways is provided with a hanging hole and a bending curved surface of which the bending direction faces the electromagnet; the hook head and the hook body of each sliding hook are respectively provided with a first curved surface and a second curved surface which can be in rigid collision action on the corresponding flexible spring, and the second curved surface is more deviated from the axis of the hook body than the first curved surface; the hook body part of each sliding hook can move into the corresponding hook body part slide way, and the back slide surface of the hook body part is in sliding fit with the side wall of the hook body part slide way in a vertical surface mode.

2. The electromagnetic needle raising unit according to claim 1, characterized in that: the bending curved surface is only formed at the bottom of the flexible reed, and the hanging hole is positioned on the bending curved surface and is adjacent to the bending curved surface.

3. The electromagnetic needle raising unit according to claim 2, characterized in that: the curved surface does not penetrate through the hook body part slideway.

4. The electromagnetic needle raising unit according to claim 1, 2 or 3, wherein each of the flexible spring pieces is provided at an upper portion thereof with a positioning hole and a fastening hole, respectively, and the base plate is formed at an upper portion thereof with a positioning portion and a screw hole, and each of the flexible spring pieces is attached to the positioning portion through the positioning hole and fixed to the base plate by a fastening member.

5. The electromagnetic needle lifting unit as claimed in claim 4, wherein the attraction surfaces of the electromagnet are located at both sides of the bottom of the electromagnet, each attraction surface faces a stopper, and each stopper is protruded from the inner wall of the corresponding side of the base plate.

6. The electromagnetic needle raising unit of any preceding claim, wherein: the utility model discloses a pole body portion, including base plate, pole body portion, vertical guide rail, the pole body portion is vertical form, has two parts that width and thickness are all different, makes the transversal protruding word form's of personally submitting the horizontal direction slide bar formula structure of pole body portion, and the pole body portion with collude the transition between the body portion and form vertical guide way, be equipped with on the base plate with pole body portion, vertical guide way difference adaptation vertical slide, vertical guide rail, the slip colludes with some built on stilts ground slidable mounting at the base plate.

7. The electromagnetic needle lifting assembly is characterized by comprising eight electromagnetic needle lifting units according to any one of claims 1 to 6, wherein the eight electromagnetic needle lifting units are sequentially arranged side by side and connected, and end cover plates are respectively fixed on two sides of each electromagnetic needle lifting unit.

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