Jacquard shedding device combining conjugate cam and connecting rod

Abstract

The utility model belongs to the technical field of textile equipment, and particularly relates to a conjugate cam and connecting rod combined jacquard shedding device. The cross beam assembly comprises two cross beams which are arranged at intervals; the connecting rod mechanism comprises a connecting rod piece, a swing rod assembly and a swing arm assembly, one end of the swing rod assembly is connected with the swing arm assembly, and the center of the swing arm assembly is rotationally connected to the cross beam; the conjugate cam mechanism is arranged on the cross beam, and the output end of the conjugate cam mechanism is connected with the other end of the swing rod assembly and used for driving the swing rod assembly to swing back and forth so as to drive the swing arm assembly to synchronously swing back and forth. And the griffe assembly is connected below the swing arm assembly. The jacquard shedding device is used for solving the problems of high cost and unstable gravity center height of the jacquard shedding device. The conjugate cam mechanism and the griffe assembly are connected through the connecting rod mechanism, a concentric shaft or double shafts and left and right wallboards are omitted, and the cost of the part is saved; the connecting rod mechanism is located outside the cross beam, the overall height of the device is reduced, the gravity center is lowered, and the whole device is more stable.

Description

Technical Field

[0001] This utility model belongs to the field of textile equipment technology, specifically relating to a jacquard opening device combining a conjugate cam and a connecting rod. Background Technology

[0002] The jacquard shedding device is one of the key pieces of equipment in textile machinery. It is mainly used to control the shedding action of warp yarns during the weaving process. During weaving, the warp yarns need to move up and down according to a certain pattern to form a shed, allowing the weft yarns to pass smoothly and interweave to form the fabric. The jacquard shedding device, through its complex mechanical structure and control system, precisely controls the movement of each warp yarn, enabling the fabric to display intricate patterns.

[0003] Currently, the swing arm connection of jacquard opening devices generally adopts a concentric shaft or dual-shaft structure, supported by left and right wall plates. For example, the utility model patent CN211367889U describes a double-cam jacquard opening device, which sets conjugate cams on both sides of the concentric shaft, but still uses the concentric shaft to set on the left and right wall plates. The swing arm and left and right wall plates are generally made of castings, which have disadvantages such as unstable quality, long manufacturing cycle, and high scrap rate. Furthermore, to ensure transmission accuracy, high precision is required for the machining of the concentric shaft or dual shaft, swing arm, and left and right wall plates, generally using machining centers, which leads to high costs. Moreover, the concentric shaft and dual shaft, mounted above the wall plates, result in a high center of gravity and instability during operation. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a jacquard opening device that combines a conjugate cam and a connecting rod, so as to solve the problems of high cost, high center of gravity and instability of jacquard opening devices.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a jacquard opening device combining a conjugate cam and a connecting rod, comprising:

[0006] Two crossbeams, the two crossbeams being spaced apart;

[0007] A linkage mechanism is provided on the outside of the crossbeam. The linkage mechanism includes: a connecting rod, a swing rod assembly, and a swing arm assembly. One end of the swing rod assembly is connected to the swing arm assembly, and the center of the swing arm assembly is rotatably connected to the crossbeam.

[0008] A conjugate cam mechanism is disposed on the crossbeam. The output end of the conjugate cam mechanism is connected to the other end of the rocker arm assembly through the connecting rod, and is used to drive the rocker arm assembly to reciprocate so as to drive the rocker arm assembly to reciprocate synchronously.

[0009] The lifting blade assembly is connected below the swing arm assembly and arranged inside the two horizontal beams.

[0010] Compared with the prior art, the above technical scheme has the following beneficial effects:

[0011] The connecting rod mechanism arranged outside the horizontal beam is connected with the conjugate cam mechanism and the lifting blade assembly to realize transmission of driving force and drive the lifting blade assembly to move, thereby eliminating the concentric shaft or double shaft and left and right wall plates, and further eliminating the time cost and monetary cost of this part, so that the cost can be reduced by about 15%.

[0012] On the basis of the above technical scheme, the embodiments of the present application can also be improved as follows:

[0013] In an embodiment, the lifting blade assembly includes a plurality of lifting blade pieces, the plurality of lifting blade pieces are divided into two groups, the lifting blade pieces in the two groups are arranged in an interlaced and spaced manner, at least one blade rod seat is connected above each of the two groups of lifting blade pieces, the blade rod seats on one group of lifting blade pieces are connected to the left end of the swing arm assembly, and the blade rod seats on the other group of lifting blade pieces are connected to the right end of the swing arm assembly, for alternating up and down movement with the rotation of the swing arm assembly.

[0014] The lifting blade pieces are divided into two groups, and after being connected by the two ends of the swing arm assembly, the alternating up and down movement of the two groups of lifting blade pieces can be realized, and a double-acting opening can be realized.

[0015] In an embodiment, two first blade rod seats and two second blade rod seats are connected above each of the two groups of lifting blade pieces, and two groups of swing arm assemblies are correspondingly arranged, the two first blade rod seats are connected to the left end of one group of swing arm assemblies and the other group of swing arm assemblies respectively, and the two second blade rod seats are connected to the right end of one group of swing arm assemblies and the other group of swing arm assemblies respectively.

[0016] The blade rod seats connected with each group of lifting blade pieces are provided as two, i.e. the first blade rod seat and the second blade rod seat, which are connected to the first end and the second end of the lifting blade piece, and the first blade rod seat and the second blade rod seat at the first end and the second end correspond to the two groups of swing arm assemblies, i.e. the first blade rod seat and the second blade rod seat on the lifting blade piece in the same group are connected to the left end of the two swing arm assemblies, and the first blade rod seat and the second blade rod seat on the lifting blade piece in the other group are connected to the right end of the two swing arm assemblies, and the blade rod seats at the first end and the second end can ensure the stability of the lifting and lowering of one group of lifting blade pieces at the same time.

[0017] In an embodiment, the ends of the blade rod seat pass through the two side horizontal beams and are connected to the ends of the swing arm assemblies, guide rods are arranged on the two sides of the blade rod seat on the horizontal beam, for limiting the reciprocating movement of the blade rod seat in the vertical direction.

[0018] By setting the guide rod, the cutter bar seat is limited to move up and down, and the lifting cutter is limited to move up and down.

[0019] In an embodiment, the swing arm assembly comprises:

[0020] A swing arm shaft is rotatably connected between the two cross beams, and the swing arm shaft extends out of the cross beams at both ends thereof;

[0021] Two swing arm members are connected at the centers thereof to the both ends of the swing arm shaft, and the both ends of the swing arm members are respectively connected to the cutter bar seats of the two groups of lifting cutter assemblies.

[0022] In an embodiment, a plurality of connecting holes are respectively arranged at the both ends of the swing arm member along the length direction thereof, a pull rod member is movably connected in the connecting hole at the end of the swing arm member, and the end of the pull rod member away from the swing arm member is connected to the end of the cutter bar seat.

[0023] In an embodiment, the pull rod member comprises:

[0024] Two pull rod members are clamped at the both sides of the end of the swing arm member, and the top ends of the pull rod members are bolted in the connecting hole;

[0025] A pull rod member is clamped and connected between the bottom ends of the two pull rod members;

[0026] A cutter bar seat connector is movably connected at one end to the bottom end of the pull rod member and at the other end to the end of the cutter bar seat.

[0027] In an embodiment, at least two vertical waist-shaped holes are arranged in the pull rod member, and the bottom ends of the pull rod members are connected to the pull rod member through the waist-shaped holes.

[0028] In an embodiment, the swing rod assembly comprises:

[0029] A first swing rod member is connected at the top end thereof to the output end of the conjugate cam mechanism;

[0030] A second swing rod member is connected at the top end thereof to the rotation center of one side of the swing arm assembly;

[0031] A connecting rod member is connected at the bottom ends thereof to the first swing rod member and the second swing rod member, and is connected at the bottom ends thereof to adjacent two second swing rod members.

[0032] In an embodiment, a plurality of lifting cutter pull plates are arranged at the bottom of the cutter bar seat, a lifting cutter connector is connected at the bottom of the lifting cutter pull plate, and the lifting cutter connector is clamped and fixed at the top of the lifting cutter member.

[0033] The one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages.

[0034] 1. The conjugate cam mechanism is adopted, the conjugate cam has a pause angle, the warp yarn opening has a waiting time, compared with the eccentric wheel, chain wheel and crank mechanism, the same opening amount can obtain longer weft insertion time, or the same weft insertion time can reduce the opening amount by 20%, thereby reducing the warp yarn tension, energy consumption and production cost.

[0035] 2. The connecting rod mechanism cooperates with the cutter bar seat to realize the alternating up and down movement of the two groups of cutter lifting pieces, realizes the compound action type opening, there are no concentric shafts or double shafts, left and right wall plates and other parts, the swing arm structure is also simplified, and the cost can be reduced by about 15%.

[0036] 3. The swing arm piece is connected with the pull rod piece through a plurality of connecting holes at both ends of the swing arm piece, the cutter bar seat drives a plurality of cutter lifting pieces, and the opening amount is adjusted only by adjusting the different connecting holes of the pull rod piece at the end of the swing arm, thereby completing the adjustment of the opening amount, the adjustment workload is small, and the efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical scheme in the specific embodiment of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0038] Figure 1 It is a whole structure schematic view of the front side view angle of the present application.

[0039] Figure 2 It is a whole structure schematic view of the rear side view angle of the present application.

[0040] Figure 3 It is another whole structure schematic view of the present application. DETAILED DESCRIPTION

[0041] The embodiments of the technical scheme of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0042] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the usual meaning understood by the technical personnel in the field to which the present application belongs.

[0043] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0044] In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0045] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] Embodiment

[0047] As Figures 1-2 shown, the jacquard opening device provided by the present application combines a conjugate cam and a connecting rod, which comprises two cross beams, a connecting rod mechanism, a conjugate cam mechanism and a knife assembly.

[0048] The two cross beams are arranged at intervals, the conjugate cam mechanism comprises a cam box 18 and a conjugate cam 1 and a cam swing arm 2 installed therein, and the cam box 18 is installed on a cross beam. In the present embodiment, the two cross beams are a front cross beam 8 and a rear cross beam 9 arranged front and rear in parallel with each other, and the cam box 18 of the conjugate cam mechanism is installed on the front cross beam 8.

[0049] Among them, the conjugate cam mechanism includes a conjugate cam 1 and a cam swing arm 2, the conjugate cam 1 drives the cam swing arm 2 to swing, the power source of the jacquard opening device can use an independent driving motor (not shown in the figure), directly drive the conjugate cam 1, or be driven by the loom through a lower commutator, a vertical shaft and an upper commutator (not shown in the figure) to drive the conjugate cam 1.

[0050] A connecting rod mechanism is arranged outside the cross beams, and the connecting rod mechanism comprises a connecting rod, a swing arm assembly and a swing rod assembly, the swing arm assembly is rotationally connected at the center thereof to the cross beams, and one end of the swing rod assembly is connected to the swing arm assembly; the output end of the conjugate cam mechanism is connected to the other end of the swing rod assembly through the connecting rod, for driving the swing rod assembly to reciprocating swing so as to drive the swing arm assembly to synchronously reciprocating swing.

[0051] The cutter assembly is connected below the swing arm assembly and arranged inside the two cross beams, and is driven by the reciprocating rotation of the swing arm assembly to move up and down.

[0052] The connecting rod mechanism arranged outside the cross beams connects the conjugate cam mechanism and the cutter assembly, so that the driving force is transmitted to drive the cutter assembly to move, and the concentric shaft or double shaft and left and right wall plates are omitted, thereby saving the time cost and monetary cost of this part, and the cost can be reduced by about 15%. Moreover, the connecting rod mechanism is arranged outside the cross beams instead of above the cross beams, so that the overall height of the equipment is reduced, the gravity center is lowered, and the whole equipment is more stable.

[0053] The cutter assembly comprises a plurality of cutter pieces, in order to realize the compound opening, the plurality of cutter pieces are divided into two groups, the cutter pieces in the two groups are arranged alternately and spaced apart, and at least one cutter bar seat is connected above each group of the cutter pieces, the cutter bar seat is perpendicular to the cutter piece, and the cutter bar seat is used to lift one group of the cutter pieces to control the whole group of the cutter pieces to move up and down. Specifically, the cutter bar seat on one group of the cutter pieces is connected to the left end of the swing arm assembly, and the cutter bar seat on the other group of the cutter pieces is connected to the right end of the swing arm assembly, for alternating up and down movement with the rotation of the swing arm assembly.

[0054] The plurality of cutter pieces are divided into two groups, and the cutter pieces in the two groups are arranged alternately and spaced apart. After the two ends of the swing arm assembly are connected to the two groups of the cutter pieces, the alternating up and down movement of the two groups of the cutter pieces can be realized, and the compound opening is realized.

[0055] In order to ensure the stability of the up and down movement of the cutter pieces, two first cutter bar seats and two second cutter bar seats are respectively connected above the two groups of the cutter pieces, and two groups of the swing arm assemblies are correspondingly arranged, the two first cutter bar seats are respectively connected to the left ends of one group of the swing arm assemblies and the other group of the swing arm assemblies, and the two second cutter bar seats are respectively connected to the right ends of one group of the swing arm assemblies and the other group of the swing arm assemblies.

[0056] Two tool holders are configured to connect to each set of lifting components, located at the beginning and end of the lifting components. The tool holders in the two sets of lifting components are the first tool holder and the second tool holder, respectively. The first and second tool holders at the beginning and end correspond to the two sets of swing arm assemblies. That is, the first tool holder on the lifting component in the same set is connected to the left end of the two swing arm assemblies, and the second tool holder on the lifting component in the other set is connected to the right end of the two swing arm assemblies. The tool holders at the beginning and end can ensure the stability of a set of lifting components when they are lifted and lowered at the same time.

[0057] The tool holder is fixed to the tool lifting component by sequentially connecting the tool lifting plate and the tool lifting connector. Specifically, the bottom of the tool holder is provided with several tool lifting plates, the bottom of the tool lifting plates is connected to the tool lifting connector, and the tool lifting connector is clamped and fixed to the top of the tool lifting component.

[0058] like Figure 1 , 2 As shown, the tool holder 13a is connected to the tool lifting connector 15a via the tool lifting pull plate 14a. The tool lifting connector 15a is installed on the right end of the tool lifting component 16a. There are 18 tool lifting pull plates 14a, 9 tool lifting connectors 15a, and 9 tool lifting components 16a.

[0059] The tool holder 13b is connected to the tool lifting connector 15b via the tool lifting pull plate 14b. The tool lifting connector 15b is installed on the right end of the tool lifting component 16b. There are 16 tool lifting pull plates 14b, 8 tool lifting connectors 15b, and 8 tool lifting components 16b.

[0060] The tool holder 13c is connected to the tool lifting connector 15c via the tool lifting plate 14c. The tool lifting connector 15c is installed on the left end of the tool lifting part 16a. There are 18 tool lifting plates 14c and 9 tool lifting connectors 15c.

[0061] The tool holder 13d is connected to the tool lifting connector 15d via the tool lifting pull plate 14d. The tool lifting connector 15d is installed on the left end of the tool lifting part 16b. There are 16 tool lifting pull plates 14d and 8 tool lifting connectors 15d.

[0062] Among them, tool holder 13a and tool holder 13c are the same parts and in the same group, tool holder 13b and tool holder 13d are the same parts and in the same group, tool holder 13a and tool holder 13c move in the same direction, tool holder 13b and tool holder 13d move in the same direction, and opposite to the movement direction of tool holder 13a and tool holder 13c;

[0063] Tool holder 13a and tool holder 13b are located at the same end of the tool lifting member, and tool holder 13c and tool holder 13d are located at the same end of the tool lifting member.

[0064] Among them, the knife-lifting plate 14a, knife-lifting plate 14b, knife-lifting plate 14c, and knife-lifting plate 14d are the same parts;

[0065] The lifting tool joints 15a, 15b, 15c and 15d are identical parts.

[0066] To ensure the stability of the up and down movement of the tool bar seat, the tool bar seat is connected at both ends through the end of the swing arm assembly on both sides of the cross beam, and a guide rod is arranged on the cross beam on both sides of the tool bar seat to limit the reciprocating movement of the tool bar seat in the vertical direction. By arranging the guide rod, the tool bar seat can only move up and down, thereby limiting the lifting tool to move only up and down.

[0067] Specifically, a total of 16 guide rods 17 are installed on the cross beams 8 and 9, respectively located on the sides of both ends of the tool bar seat, for ensuring that the tool bar seats 13a, 13b, 13c and 13d can only move up and down.

[0068] In the embodiment, the swing arm assembly includes a swing arm shaft and two swing arm pieces.

[0069] The swing arm shaft is rotatably connected between the two cross beams, and the swing arm shaft extends out of the cross beams at both ends. The centers of the two swing arm pieces are connected to the two ends of the swing arm shaft, and the two ends of the swing arm piece are respectively connected to the tool bar seats of the two groups of lifting tool assemblies.

[0070] In the embodiment, the swing arm assembly is provided with two groups, which are respectively arranged corresponding to the two groups of lifting tools.

[0071] As shown in Figure 1 , 2 The swing arm piece 5a is connected to the front end of the swing arm shaft 6a, and square seat bearings 7a and 7b are respectively installed on the front and rear ends of the swing arm shaft 6a. The square seat bearing 7a is installed on the front cross beam 8, and the square seat bearing 7b is installed on the rear cross beam 9.

[0072] The swing arm piece 5b is connected to the front end of the swing arm shaft 6b, and square seat bearings 7c and 7d are respectively installed on the two ends of the swing arm shaft 6b. The square seat bearing 7c is installed on the front cross beam 8, and the square seat bearing 7d is installed on the rear cross beam 9.

[0073] The swing arm piece 5c is installed on the rear end of the swing arm shaft 6a, and the swing arm piece 5d is installed on the rear end of the swing arm shaft 6b.

[0074] A plurality of connection holes are respectively arranged at both ends of the swing arm piece along the length extension direction of the swing arm piece, and a pull rod piece is movably connected in the connection holes at both ends of the swing arm piece. One end of the pull rod piece away from the swing arm piece is connected to the end of the tool bar seat.

[0075] Both ends of the swing arm piece are connected to the end of the lower tool bar seat through the pull rod piece. Specifically, the pull rod piece includes two pull rod pieces, a pull rod piece two and a tool bar seat joint.

[0076] The top ends of the two pull rods are clamped on both sides of the end of the swing arm. The top end of the pull rod is bolted into the connecting hole. The top end of the pull rod is clamped and connected between the bottom ends of the two pull rods. One end of the tool holder connector is movably connected to the bottom end of the pull rod, and the other end is connected to the end of the tool holder.

[0077] like Figure 1 , 2 As shown, the left end of the swing arm 5a is connected to the front end of the tool holder 13a via two pull rods 10a, 11a, and the tool holder joint 12a connected in sequence, and the right end of the swing arm 5a is connected to the front end of the tool holder 13b via two pull rods 10b, 11b, and the tool holder joint 12b connected in sequence.

[0078] The left end of the swing arm 5b is connected to the front end of the tool holder 13c via two sequentially connected pull rods 10c, 11c, and 12c. The right end of the swing arm 5b is connected to the front end of the tool holder 13d via two sequentially connected pull rods 10d, 11d, and 12d.

[0079] The left end of the swing arm 5c is connected to the rear end of the tool holder 13a via two sequentially connected pull rods 10e, 11e, and tool lifting rod seat joint 12e. The right end of the swing arm 5c is connected to the rear end of the tool holder 13b via two sequentially connected pull rods 10f, 11f, and 12f.

[0080] The left end of the swing arm 5d is connected to the rear end of the tool holder 13c via two sequentially connected pull rods 10g, 11g, and 12g. The right end of the swing arm 5d is connected to the rear end of the tool holder 13d via two sequentially connected pull rods 10h, 11h, and 12h.

[0081] The swing arm components 5a, 5b, 5c, and 5d are the same parts, and the swing directions of the swing arm components 5a, 5b, 5c, and 5d are consistent.

[0082] The swing arm shaft 6a and swing arm shaft 6b are the same part, as are the square seat bearings 7a, 7b, 7c, and 7d.

[0083] The pull rod two is provided with at least two vertical waist-shaped holes, and the bottom end of the pull rod one is connected with the pull rod two through the waist-shaped holes. Specifically, the pull rod two 11a, the pull rod two 11b, the pull rod two 11c, the pull rod two 11d, the pull rod two 11e, the pull rod two 11f, the pull rod two 11g and the pull rod two 11h are all provided with three waist-shaped holes, which are not shown in the figure, for adjusting the height of the cutter bar seat 13a, the cutter bar seat 13b, the cutter bar seat 13c and the cutter bar seat 13d, so that the lifting cutter 16a and the lifting cutter 16b can reach the specified position when they are at the highest position.

[0084] The pull rod one 10a, the pull rod one 10b, the pull rod one 10c, the pull rod one 10d, the pull rod one 10e, the pull rod one 10f, the pull rod one 10g and the pull rod one 10h are the same parts.

[0085] The pull rod two 11a, the pull rod two 11b, the pull rod two 11c, the pull rod two 11d, the pull rod two 11e, the pull rod two 11f, the pull rod two 11g and the pull rod two 11h are the same parts.

[0086] By mounting the pull rod one 10a, the pull rod one 10b, the pull rod one 10c, the pull rod one 10d, the pull rod one 10e, the pull rod one 10f, the pull rod one 10g and the pull rod one 10h on different connecting holes of the swing arm 5a, the swing arm 5b, the swing arm 5c and the swing arm 5d, the lifting height of each row of the lifting cutter 16a and the lifting cutter 16b can be different, that is, the opening amount is different.

[0087] The lifting cutter 16a and the lifting cutter 16b are the same parts.

[0088] In the embodiment, the swing rod assembly comprises a first swing rod and two second swing rods and two connecting rods.

[0089] The top end of the first swing rod is connected to the output end of the conjugate cam mechanism. Specifically, as shown in the figure, the cam swing arm 2 is connected to the first swing rod 3a. Figure 1

[0090] The top end of the two second swing rods is connected to the rotation center of one side of the swing arm assembly, and the connecting rod is connected to the bottom end of the first swing rod and the second swing rod and the bottom end of the adjacent two second swing rods. Specifically, the connecting rod comprises a short connecting rod 4 and a long connecting rod 10.

[0091] The first swing rod and the second swing rod are the same parts, and the rotation axes of the first swing rod 3a, the second swing rod 3b and the second swing rod 3c, that is, the swing arm shaft 6a, the swing arm shaft 6b and the rotation axis of the cam swing arm 2 are on a horizontal line.

[0092] As shown in the figure, the first swing rod 3a is connected to the cam swing arm 2. Figure 1 ​As shown, the first swing lever 3a is connected with the second swing lever 3b through the short connecting rod 4, and the second swing lever 3b is connected with the swing arm 5a in the center; the second swing lever 3b is connected with the second swing lever 3c through the long connecting rod 10, and the second swing lever 3c is connected with the swing arm 5b in the center.

[0093] During swinging, the swinging directions of the first swing lever 3a, the second swing lever 3b and the second swing lever 3c are consistent.

[0094] The center distance of the mounting hole of the short connecting rod 4 is equal to the distance from the center of the swing arm shaft 6a to the rotation axis of the cam swing arm 2.

[0095] The center distance of the mounting hole of the long connecting rod 10 is equal to the distance from the center of the swing arm shaft 6a to the center of the swing arm shaft 6b.

[0096] On the other hand, another deformation structure of the jacquard opening device combined with the conjugate cam and connecting rod is disclosed, which comprises a front cross beam 8 and a rear cross beam 9 arranged in front and back and parallel to each other, and a cam box 18 installed on the rear cross beam 9. The structure is centrally symmetrical as shown above. Figure 3

[0097] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.​

Claims

1. A combined cam and link lift motion for a jacquard shedding motion, characterised in that, include: Two crossbeams, which are spaced apart; A linkage mechanism is provided on the outside of the crossbeam. The linkage mechanism includes: a connecting rod, a swing rod assembly, and a swing arm assembly. One end of the swing rod assembly is connected to the swing arm assembly, and the center of the swing arm assembly is rotatably connected to the crossbeam. A conjugate cam mechanism is disposed on the crossbeam. The output end of the conjugate cam mechanism is connected to the other end of the rocker arm assembly through the connecting rod, and is used to drive the rocker arm assembly to reciprocate so as to drive the rocker arm assembly to reciprocate synchronously. A blade lifting assembly is connected below the swing arm assembly and disposed inside the two crossbeams.

2. The pattern opening device according to claim 1, characterized in that The lifting assembly includes several lifting components, which are divided into two groups. The lifting components in the two groups are staggered and spaced apart. At least one blade holder is connected to the top of each of the two groups of lifting components. The blade holder on one group of lifting components is connected to the left end of the swing arm assembly, and the blade holder on the other group of lifting components is connected to the right end of the swing arm assembly, for alternating up and down movement as the swing arm assembly rotates.

3. The pattern opening device according to claim 2, characterized in that Two first tool holders and two second tool holders are respectively connected above the two sets of lifting tools. Two sets of swing arm assemblies are respectively provided. The two first tool holders are respectively connected to the left end of one set of swing arm assemblies and the other set of swing arm assemblies. The two second tool holders are respectively connected to the right end of one set of swing arm assemblies and the other set of swing arm assemblies.

4. The pattern opening device according to claim 2, wherein The two ends of the tool holder pass through the two side crossbeams and are connected to the ends of the swing arm assembly. Guide rods are provided on the crossbeams along both sides of the tool holder to limit the reciprocating movement of the tool holder in the vertical direction.

5. The pattern opening device according to claim 2, wherein The swing arm assembly includes: A swing arm shaft is rotatably connected between the two crossbeams, with both ends of the swing arm shaft passing through the crossbeams; Two swing arms are provided, with the center of each swing arm connected to both ends of the swing arm shaft. The two ends of each swing arm are respectively connected to the blade holders of the two sets of blade lifting assemblies.

6. The pattern opening device according to claim 5, wherein The swing arm has several connecting holes at both ends along its length extension direction. Pull rods are movably connected to the connecting holes at both ends of the swing arm. The end of the pull rod away from the swing arm is connected to the end of the tool holder.

7. The pattern opening device according to claim 6, characterized in that The tie rod includes: Two pull rods, the top ends of which are clamped to both sides of the end of the swing arm, and the top ends of the pull rods are bolted into the connecting holes; Pull rod two, the top of which is clamped and connected between the bottom ends of the two pull rods one; The tool holder connector has one end movably connected to the bottom end of the pull rod 2, and the other end connected to the end of the tool holder.

8. The pattern opening device according to claim 7, characterized in that The second pull rod has at least two vertical waist-shaped holes, and the bottom end of the first pull rod is connected to the second pull rod through the waist-shaped holes.

9. The pattern opening device according to claim 5, wherein The rocker arm assembly includes: The first rocker arm has its top end connected to the output end of the conjugate cam mechanism; The second swing arm has its top end connected to the rotation center on one side of the swing arm assembly; The connecting rod is connected to the bottom ends of the first swing rod and the second swing rod, and to the bottom ends of two adjacent second swing rods.

10. The pattern opening device according to claim 2, wherein The bottom of the cutter bar seat is provided with several cutter lifting plates, the bottom of the cutter lifting plate is connected with a cutter lifting joint, and the cutter lifting joint is clamped and fixed on the top of the cutter lifting piece.

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