CN223033559U - Cam shedding machine and rapier loom - Google Patents

Abstract

The utility model discloses a cam shedding machine and a rapier loom, wherein the cam shedding machine is used to drive the heald frame to reciprocate in the vertical direction, the heald frame is configured to move between the highest point and the lowest point in the vertical direction, and comprises a cam shaft, a first cam piece, a second cam piece and a swing arm, the first cam piece and the second cam piece are both fixed on the cam shaft to rotate with the cam shaft. The first cam piece and the second cam piece cooperate with the corresponding swing arm to output swing and drive the heald frame to move in the vertical direction, the second cam piece drives the corresponding swing arm to swing to drive the corresponding heald frame to move in the vertical direction, when the N first cam pieces drive the corresponding at least one heald frame to be at the highest point, and when at least one heald frame is at the lowest point, the second cam piece drives the corresponding heald frame to be at the lowest point; when the N first cam pieces drive the corresponding heald frame to be at the heald flat position, the second cam piece drives the corresponding heald frame to be at the highest point, and the structure effectively improves the weaving efficiency.

Description

Cam tapping machine and rapier loom

Technical Field

The utility model relates to the technical field of looms, in particular to a cam shedding machine and a rapier loom.

Background

The rapier loom is a mainstream machine in the loom, has the advantages of high speed, stability and good variety adaptability, and is a preferred machine for weaving clothing fabrics with various grades and other grey cloths. The rapier loom mainly drives the heald frame to move up and down through the connecting rod assembly by the cam shedding machine, so that warp yarns are divided into upper and lower layers of warp yarns to form shedding, and the rapier head can conveniently pass through the rapier loom.

When a plurality of medical bandages with narrower width are woven simultaneously, in order to facilitate the operation of the warps and the skein, the warps and the skein are generally wound on the same warp beam at the same time, and the release amount is the same due to different amounts of the warps and the skein (more skein and less warp), so that the tensions of the warps and the skein are different (small warp tension and large skein tension), and the phenomenon of broken skein is easily caused, thereby greatly influencing the weaving efficiency.

Therefore, how to effectively improve the weaving efficiency is a technical problem to be solved by those skilled in the art.

Disclosure of utility model

In view of the above, an object of the present utility model is to provide a cam tapping machine capable of effectively improving weaving efficiency.

Another object of the present utility model is to provide a rapier loom.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

A cam tapping machine for driving a heald frame to reciprocate in a vertical direction, the heald frame being configured to move in the vertical direction between a highest point and a lowest point, comprising a cam shaft, a first cam piece, a second cam piece and a swing arm, the first cam piece and the second cam piece each being fixed to the cam shaft so as to follow the rotation of the cam shaft;

The first cam pieces and the second cam pieces are matched with the corresponding swing arms to output swing and drive the heald frames to move in the vertical direction, wherein the number of the first cam pieces is N, N is more than or equal to 2;N, the first cam pieces drive the corresponding swing arms to swing so as to drive the corresponding heald frames to move, at least one heald frame is located at the highest point at a preset position, and at least one heald frame is located at the lowest point;

The second cam piece drives the corresponding swing arm to swing so as to drive the corresponding heald frame to move along the vertical direction, and the following conditions are met:

When at least one heald frame corresponding to the driving of the first cam sheet is positioned at the highest point and at least one heald frame is positioned at the lowest point, the driving of the second cam sheet is positioned at the lowest point;

And when the N first cam pieces drive the corresponding heald frames to be positioned at the heald flat position, the second cam pieces drive the corresponding heald frames to be positioned at the highest point.

Optionally, the maximum cam radius of the first cam plate is greater than the maximum cam radius of the second cam plate.

Optionally, the number of times that one first cam piece rotates for one circle to drive the corresponding heald frame to move up and down is A times;

The number of times that the second cam piece rotates for one circle to drive the corresponding heald frame to move up and down is B times, and B=nA, and n is more than or equal to 1.

Optionally, the cam further comprises a guide wheel and a swing arm arranged corresponding to the guide wheel, wherein the guide wheel is fixed on the cam shaft and is arranged between the first cam piece and the second cam piece.

Optionally, the device further comprises a driving mechanism, wherein the driving mechanism is connected with the cam shaft and can drive the cam shaft to rotate.

Optionally, the driving mechanism includes driving motor and drive assembly, driving motor pass through drive assembly with the camshaft links to each other, driving motor can pass through drive assembly with power transmission to the camshaft.

Optionally, the transmission assembly includes input shaft, first bevel gear, second bevel gear and transmission shaft, first bevel gear set up in on the input shaft, the second bevel gear set up in on the transmission shaft, first bevel gear with the second bevel gear meshes mutually, the transmission shaft with the camshaft links to each other.

The rapier loom is characterized by comprising the cam shedding cam machine, a connecting rod assembly and a heald frame, wherein the cam shedding cam machine is connected with the heald frame through the connecting rod assembly.

Optionally, the connecting rod assembly comprises a blade connecting rod connector, a diagonal draw bar, a rocker arm assembly and a lifting draw bar assembly;

One end of the blade connecting rod combining piece is connected with the swing arm, the other end of the blade connecting rod combining piece is connected with one end of the diagonal draw bar, one end of the rocker arm assembly is connected with the other end of the diagonal draw bar, the other end of the rocker arm assembly is connected with one end of the lifting draw bar assembly, and the other end of the lifting draw bar assembly is connected with the heald frame.

Optionally, the rocker arm assembly includes a rotating shaft and a blade, and the blade is rotatably disposed on the rotating shaft;

The rocker arm assemblies and the lifting rod assemblies are at least two, at least one rocker arm assembly and one lifting rod assembly are arranged on one side of the heald frame, at least one rocker arm assembly and one lifting rod assembly are arranged on the opposite side of the heald frame, and the rocker arm assemblies are connected through long connecting rods.

According to the technical scheme, when the rapier loom works, the cam shaft rotates, the first cam piece and the second cam piece are driven by the cam shaft to rotate along the circumferential direction of the cam shaft, swing arms respectively corresponding to the first cam piece and the second cam piece are continuously pushed to act in the rotating process of the first cam piece and the second cam piece, wherein when at least one heald frame corresponding to the N first cam piece is driven by the N first cam piece to be located at the highest point, and at least one heald frame is located at the lowest point, the heald frame corresponding to the N first cam piece is driven by the second cam piece to be located at the lowest point, at the moment, the second cam piece is driven by the second cam piece to be not lifted by the heald frame corresponding to the N first cam piece, the heald frame corresponding to be driven by the second cam piece to be located at the highest point, the warp feeding is achieved, a margin is reserved for the selvedge yarns, the occurrence probability of broken yarns is reduced, and the weaving efficiency is effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a cam tapping machine according to an embodiment of the present utility model;

FIG. 2 is a schematic view showing a connection structure between a cam tapping machine and a heald frame according to an embodiment of the present utility model;

FIG. 3 is an enlarged schematic view of FIG. 2A;

FIG. 4 is a schematic view of a first cam plate according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a second cam plate according to an embodiment of the present utility model;

FIG. 6 is a schematic structural view of a guide wheel according to an embodiment of the present utility model;

FIG. 7 is a schematic view showing an internal structure of a cam tapping machine (with guide wheels removed) according to an embodiment of the present utility model;

FIG. 8 is a schematic view of an arrangement of a first cam plate and a second cam plate according to an embodiment of the present utility model;

FIG. 9 is a left side view of FIG. 8;

FIG. 10 is a right side view of FIG. 8;

FIG. 11 is a schematic view showing an internal structure of a cam tapping machine according to an embodiment of the present utility model;

FIG. 12 is a schematic view of an arrangement of a first cam plate, a second cam plate and a guide wheel according to an embodiment of the present utility model;

FIG. 13 is a left side view of FIG. 12;

FIG. 14 is a right side view of FIG. 12;

Fig. 15 is a schematic view of a structure of a heald frame at the lowest point driven by a second cam plate according to an embodiment of the present utility model;

fig. 16 is a schematic view of a structure of a heald frame driven by a second cam plate according to an embodiment of the present utility model at the highest point.

Reference numerals:

100. The device comprises a driving mechanism, 101, an input shaft, 102, a first bevel gear, 103, a second bevel gear, 104, a transmission shaft, 200, a cam shaft, 300, a first cam sheet, 400, a second cam sheet, 500, a swing arm, 600 and a guide wheel;

700. Connecting rod assembly, 701, connecting rod combination piece, 702, diagonal draw bar, 703, rocker arm assembly, 704, lifting draw bar assembly, 7041, lifting draw bar threaded part, 7042, nut, 7043 and stud;

800. Heald frame, 900, cloth roll, 1000, coiling shaft, 1100, back beam guide, 1200, warp beam, 1300, warp, 1301 and shed.

Detailed Description

In view of the above, the core of the present utility model is to provide a cam tapping machine, which can effectively improve the weaving efficiency.

Another core of the present utility model is to provide a rapier loom.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be obtained by those skilled in the art without making any inventive effort, are within the scope of the present utility model based on the embodiments of the present utility model, and refer to fig. 1 to 16.

Referring to fig. 1 to 5 and 7 to 10, the cam opening machine disclosed in the embodiment of the present utility model is used for driving a heald frame 800 to reciprocate in a vertical direction, wherein the heald frame 800 is configured to move between a highest point and a lowest point in the vertical direction, the cam opening machine comprises a cam shaft 200, a first cam plate 300, a second cam plate 400 and a swing arm 500, and the first cam plate 300 and the second cam plate 400 are fixed on the cam shaft 200 to rotate along with the cam shaft 200.

The first cam plates 300 and the second cam plates 400 are matched with the corresponding swing arms 500 to output swing and drive the heald frames 800 to move in the vertical direction, the number of the first cam plates 300 is N, N is larger than or equal to 2;N, the first cam plates 300 drive the corresponding swing arms 500 to swing so as to drive the corresponding heald frames 800 to move, at least one heald frame 800 is located at the highest point and at least one heald frame 800 is located at the lowest point at a preset position, the second cam plates 400 drive the corresponding swing arms 500 to swing so as to drive the corresponding heald frames 800 to move in the vertical direction, and the following conditions are met that when the first cam plates 300 drive the corresponding at least one heald frame 800 to be located at the highest point and the at least one heald frame 800 is located at the lowest point, the second cam plates 400 drive the corresponding heald frame 800 to be located at the lowest point and the corresponding heald frame 800 is located at the highest point when the first cam plates 300 drive the corresponding heald frames 800 to be located at the heald flat position.

When the rapier loom works, the cam shaft 200 rotates, the cam shaft 200 drives the first cam piece 300 and the second cam piece 400 to rotate along the circumferential direction of the cam shaft, and in the process of rotating the first cam piece 300 and the second cam piece 400, the swing arms 500 which are respectively and correspondingly arranged are continuously pushed to act, wherein when the N first cam pieces 300 drive at least one heald frame 800 which corresponds to the N first cam pieces to be at the highest point and the at least one heald frame 800 to be at the lowest point, the second cam piece 400 drive the corresponding heald frame 800 to be at the lowest point, at the moment, the second cam piece 400 drive the heald frame 800 which corresponds to the second cam pieces to not lift yarns, the tension of the warp yarn 1300 is kept within a preset tension range, and when the N first cam pieces 300 drive the corresponding heald frames 800 to be at the heald flat position, the second cam pieces 400 drive the corresponding heald frames 800 to lift yarns to realize warp feeding, thereby leaving allowance for selvedge yarn, and effectively improving the weaving efficiency of selvedge broken yarns.

The lap 900, the winding shaft 1000, the back beam guide 1100, and the beam 1200 are all part of a rapier loom, and when the rapier loom is in operation, the warp yarn 1300 is wound around the beam 1200 through the lap 900, the winding shaft 1000, and the back beam guide 1100 in this order.

Referring to fig. 15 specifically, when N first cam plates 300 drive at least one heald frame 800 corresponding to the first cam plates at the highest point and at least one heald frame 800 at the lowest point, the second cam plates 400 drive the corresponding heald frame 800 at the lowest point, at this time, the second cam plates 400 drive the corresponding heald frame 800 not to lift yarns, and the tension of the warp yarn 1300 is kept within the preset tension range;

Referring to fig. 16 specifically, when N first cam plates 300 drive the corresponding heald frame 800 to be at the heald position, the second cam plates 400 drive the corresponding heald frame 800 to be at the highest point, and at this time, the second cam plates 400 drive the corresponding heald frame 800 to lift yarn, so as to realize let-off, and at this time, the warp 1300 releases a part of the warp beam 1200, thereby leaving a margin for the selvedge yarn and reducing the occurrence probability of breakage of the selvedge yarn.

It should be noted that two heald frames 800 are adjacent, one heald frame 800 is located at the highest point and one heald frame 800 is located at the lowest point, and the yarn is separated into two layers, i.e. upper and lower, to form the shed 1301. In each shedding motion of the cam shedding machine, all warp yarns 1300 start from a heald flat position and are separated in an upper direction and a lower direction to form a required shed 1301, and when the shed is closed, all upper and lower layers of warp yarns 1300 return to the heald flat position, and the shed 1301 is also called warp shedding or shedding.

As a further example, the maximum cam radius of the first cam plate 300 disclosed in the embodiments of the present utility model is greater than the maximum cam radius of the second cam plate 400. By the arrangement, the tension of the warp can be effectively controlled, and the excessive adjustment of the tension of the warp is prevented.

As a further embodiment, in the cam tapping machine disclosed in the present utility model, the number of times that one first cam piece 300 rotates one round to drive the corresponding heald frame 800 to move up and down is a times, the number of times that the second cam piece 400 rotates one round to drive the corresponding heald frame 800 to move up and down is B times, and b=na, n is greater than or equal to 1.

So configured, the second cam plate 400 drives the heald frame 800 corresponding thereto to have a movement frequency greater than that of the first cam plate 300 driving the heald frame 800 corresponding thereto, thereby allowing the yarn to shake and separate and avoiding adhesion.

Referring to fig. 6 and 11 to 14, in order to achieve the guiding function for the second cam plate 400, the cam tapping machine disclosed in the embodiment of the utility model further includes a guiding wheel 600 and a swing arm 500 corresponding to the guiding wheel 600, wherein the guiding wheel 600 is fixed on the cam shaft 200 and is disposed between the first cam plate 300 and the second cam plate 400.

The specific structure of the guide wheel 600 is not limited in the embodiment of the present utility model, and the structure meeting the use requirement of the present utility model is within the scope of the present utility model.

As one embodiment, the guide wheel 600 disclosed in the embodiment of the present utility model may be a ring cam, and when the cam shaft 200 drives the guide wheel 600 to rotate, the guide wheel 600 is always in contact with the swing arm 500 correspondingly disposed, so that the heald frame 800 is always in a static state.

The embodiment of the present utility model does not limit the specific structure of the driving mechanism 100, and the structure meeting the use requirements of the present utility model is within the scope of the present utility model.

As one of the embodiments, the disclosed driving mechanism 100 includes a driving motor and a transmission assembly, wherein the driving motor is connected to the camshaft 200 through the transmission assembly, and the driving motor can transmit power to the camshaft 200 through the transmission assembly.

The embodiment of the utility model does not limit the specific structure of the transmission assembly, and the structure meeting the use requirement of the utility model is within the protection scope of the utility model.

As one embodiment, the transmission assembly disclosed in the embodiment of the present utility model includes an input shaft 101, a first bevel gear 102, a second bevel gear 103, and a transmission shaft 104, where the first bevel gear 102 is disposed on the input shaft 101, the second bevel gear 103 is disposed on the transmission shaft 104, the first bevel gear 102 is meshed with the second bevel gear 103, and the transmission shaft 104 is connected to a camshaft 200.

The motor is started, the motor drives the input shaft 101 to rotate, the input shaft 101 drives the first bevel gear 102 to rotate, the first bevel gear 102 drives the second bevel gear 103 to rotate, the second bevel gear 103 drives the transmission shaft 104 to rotate, the transmission shaft 104 drives the cam shaft 200 to rotate, and the cam shaft 200 drives the first cam plate 300, the second cam plate 400 and the guide wheel 600 to rotate.

The embodiment of the utility model also discloses a rapier loom which comprises the cam shedding machine disclosed in any embodiment, a connecting rod assembly 700 and a heald frame 800, wherein the cam shedding machine is connected with the heald frame 800 through the connecting rod assembly 700.

Because the rapier loom adopts the cam shedding machine disclosed by the embodiment of the utility model, the rapier loom has the technical advantages of the cam shedding machine disclosed by the embodiment of the utility model, and the embodiment of the utility model is not repeated one by one.

The embodiment of the present utility model is not limited to the specific structure of the link assembly 700, and the structure satisfying the use requirements of the present utility model is within the scope of the present utility model.

As one example, referring to fig. 1-3, a link assembly 700 in accordance with an embodiment of the present utility model includes a blade link coupler 701, a diagonal draw bar 702, a rocker arm assembly 703, and a lift bar assembly 704.

Wherein, one end of the blade connecting rod combination part 701 is connected with the swing arm 500, the other end is connected with one end of the diagonal draw bar 702, one end of the rocker arm assembly 703 is connected with the other end of the diagonal draw bar 702, the other end is connected with one end of the lifting draw bar assembly 704, and the other end of the lifting draw bar assembly 704 is connected with the heald frame 800.

The lifting rod assembly 704 includes a lifting rod threaded portion 7041, a nut 7042, and a stud 7043, wherein the heald frame 800 is configured to be positioned on the lifting rod 704 by adjusting the height of the stud 7043 at the height position of the lifting rod threaded portion 7041, and then is fixed by the nut 7042 after being adjusted.

To promote the smoothness of the motion of the heald frame 800, the disclosed rocker arm assembly 703 of the present embodiment includes a rotating shaft and a blade rotatably disposed on the rotating shaft.

The rocker arm assemblies 703 and the lifting rod assemblies 704 are at least two, at least one rocker arm assembly 703 and one lifting rod assembly 704 are arranged on one side of the heald frame 800, at least one rocker arm assembly 703 and one lifting rod assembly 704 are arranged on the opposite side of the heald frame 800, and different rocker arm assemblies 703 are connected through long connecting rods.

When the first cam piece 300 pushes the swing arm 500 to act, the swing arm 500 drives the blade connecting rod combining piece 701 to drive the rocker arm assembly 703 to act, the rocker arm assembly 703 moves the lifting rod assembly 704 to act, and the lifting rod drives the heald frame 800 to move along the vertical direction.

Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A cam tapping machine for driving a heald frame to reciprocate in a vertical direction, the heald frame being configured to move in the vertical direction between a highest point and a lowest point, characterized by comprising a cam shaft, a first cam piece, a second cam piece and a swing arm, the first cam piece and the second cam piece being both fixed to the cam shaft so as to follow the rotation of the cam shaft;

The first cam pieces and the second cam pieces are matched with the corresponding swing arms to output swing and drive the heald frames to move in the vertical direction, wherein the number of the first cam pieces is N, N is more than or equal to 2;N, the first cam pieces drive the corresponding swing arms to swing so as to drive the corresponding heald frames to move, at least one heald frame is located at the highest point at a preset position, and at least one heald frame is located at the lowest point;

The second cam piece drives the corresponding swing arm to swing so as to drive the corresponding heald frame to move along the vertical direction, and the following conditions are met:

When at least one heald frame corresponding to the driving of the first cam sheet is positioned at the highest point and at least one heald frame is positioned at the lowest point, the driving of the second cam sheet is positioned at the lowest point;

And when the N first cam pieces drive the corresponding heald frames to be positioned at the heald flat position, the second cam pieces drive the corresponding heald frames to be positioned at the highest point.

2. The cam tapping machine of claim 1, wherein the maximum cam radius of the first cam lobe is greater than the maximum cam radius of the second cam lobe.

3. The cam tapping machine according to claim 1, wherein,

The number of times of driving the corresponding heald frame to move up and down by one first cam piece to rotate for one circle is A times;

The number of times that the second cam piece rotates for one circle to drive the corresponding heald frame to move up and down is B times, and B=nA, and n is more than or equal to 1.

4. The cam tapping machine according to claim 1, further comprising a guide wheel and the swing arm provided corresponding to the guide wheel, the guide wheel being fixed to the cam shaft and provided between the first cam piece and the second cam piece.

5. The cam tapping machine of claim 1, further comprising a drive mechanism coupled to the cam shaft, the drive mechanism capable of driving the cam shaft in rotation.

6. The cam tapping machine of claim 5, wherein the drive mechanism comprises a drive motor and a transmission assembly, the drive motor being coupled to the cam shaft by the transmission assembly, the drive motor being capable of transmitting power to the cam shaft through the transmission assembly.

7. The cam tapping machine of claim 6, wherein the drive assembly comprises an input shaft, a first bevel gear disposed on the input shaft, a second bevel gear disposed on the drive shaft, the first bevel gear engaged with the second bevel gear, and a drive shaft coupled to the cam shaft.

8. Rapier loom, characterized by comprising a cam shedding machine according to any of claims 1 to 7, further comprising a connecting rod assembly and a heald frame, said cam shedding machine being connected to said heald frame by means of said connecting rod assembly.

9. The rapier loom of claim 8, wherein said linkage assembly includes a blade linkage assembly, a diagonal draw bar, a rocker arm assembly and a lift bar assembly;

One end of the blade connecting rod combining piece is connected with the swing arm, the other end of the blade connecting rod combining piece is connected with one end of the diagonal draw bar, one end of the rocker arm assembly is connected with the other end of the diagonal draw bar, the other end of the rocker arm assembly is connected with one end of the lifting draw bar assembly, and the other end of the lifting draw bar assembly is connected with the heald frame.

10. The rapier loom of claim 9, wherein said rocker arm assembly includes a rotary shaft and a blade, said blade being rotatably disposed on said rotary shaft;

The rocker arm assemblies and the lifting rod assemblies are at least two, at least one rocker arm assembly and one lifting rod assembly are arranged on one side of the heald frame, at least one rocker arm assembly and one lifting rod assembly are arranged on the opposite side of the heald frame, and the rocker arm assemblies are connected through long connecting rods.