A controllable retracting and paying-out device

Abstract

The utility model relates to fishing net machine technical field, concretely relates to a controllable retraction wire feeding device, include: main shaft and pressure knot axle, its include with the cam fixed connection of main shaft, open the swing bar of strip movable slot, one end of main shaft penetrates movable slot and with movable slot sliding fit, swing bar is rotatoryly provided with the guide pulley of abutting with cam at its one side. The utility model adds the adjusting structure between swing bar and guide pulley, can change the position of guide pulley on swing bar along movable slot length direction, directly adjusts cam force arm length, when guide pulley position is close or far from main shaft, swing bar sliding stroke will also change accordingly when cam rotates, causes pressure knot axle swing amplitude to change along with, realizes the conversion of strong and weak pressure knot, thereby solves the problem that the traditional device because of guide pulley position fixed leads to pressure knot intensity and cannot adjust, cannot adapt to the pressure knot demand of different net line material, diameter.

Description

Technical Field

[0001] This utility model relates to the field of fishing net machine technology, and in particular to a controllable retraction and line release device. Background Technology

[0002] During the operation of a net weaving machine, the quality of the knotting effect directly affects the strength, lifespan, and operational performance of the final fishing net. Retraction is one of the steps in the knotting process of a fishing net machine, which is the process of the thread passing through the shuttle. Currently, there are two main types of retraction devices, which will be introduced below.

[0003] As attached Figure 6 As shown, the first method relies solely on the servo motor to drive the pressing shaft back. That is, a driven gear is installed on the pressing shaft (pressing rod), and a drive gear is installed on the main shaft. The drive gear meshes with the driven gear, and the main shaft is connected to the servo motor and the reducer. During operation, the servo motor drives the main shaft to rotate through the reducer, and the main shaft drives the pressing shaft to move through the drive gear and the driven gear.

[0004] As attached Figure 7 As shown, the second type combines a spring with a servo motor drive to achieve retraction, which is a subsequent improvement. The main shaft is connected to the hook mechanism and the pressing shaft through a transmission mechanism. It includes a cam fixedly connected to the main shaft and a rocker arm with a movable groove. One end of the main shaft passes through the movable groove and can slide along the movable groove. The rocker arm has a guide wheel that rotates on one side and abuts against the cam. The rocker arm and the pressing shaft are connected by a movable hinge consisting of a rocker arm, a rocker arm pin, a rocker arm shaft and a spring. When the main shaft drives the cam to rotate, the cam pushes the guide wheel to make the rocker arm drive the pressing shaft to swing back and forth.

[0005] The second type of retraction device has the following drawbacks: the profile dimensions of the cam are fixed, and the installation position of the guide wheel on the swing arm (especially along the length of the waist-shaped movable groove) is also fixed and cannot be adjusted. Since the position of the guide wheel on the swing arm directly affects the force arm of the cam on the swing arm and the sliding stroke of the swing arm, it ultimately determines the swing amplitude of the pressing shaft (i.e., the pressing strength). This fixed structure makes it impossible to flexibly adjust the pressing strength according to actual production needs (such as different wire diameters, materials of mesh, or desired knot tightness), making it difficult to adapt to diverse mesh weaving process requirements. Utility Model Content

[0006] In view of this, the purpose of this utility model is to propose a controllable retraction and feeding device to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, this utility model provides a controllable retraction and feeding device, comprising:

[0008] Main shaft and press-fit shaft;

[0009] The linkage structure includes a cam fixedly connected to the main shaft, a rocker arm with a strip-shaped movable groove, one end of the main shaft passing through the movable groove and slidingly engaging with it, a guide wheel rotatably disposed on one side of the rocker arm that abuts against the cam, and the other side of the rocker arm being movably hinged to the pressing shaft. When the main shaft drives the cam to rotate, the cam pushes the guide wheel to make the movable groove of the rocker arm slide relative to the main shaft, so that the rocker arm drives the pressing shaft to reciprocate.

[0010] An adjustment structure is used to adjust the position of the guide wheel on the swing arm along the length of the movable groove, so as to change the swing amplitude of the pressing shaft and thus adjust the pressing strength.

[0011] As a preferred embodiment of this utility model, the adjustment structure includes:

[0012] A bracket, which is rotatably connected to the guide wheel, wherein the bracket forms an insert plate on its side away from the guide wheel;

[0013] A connecting sleeve with an insertion interface at one end is fixedly connected to a swing rod. The insert plate can be inserted into the insertion port to connect the bracket to the connecting sleeve. The insert plate has a plurality of first positioning holes on its surface along its length direction. The connecting sleeve has a second positioning hole on its outside that matches the first positioning holes.

[0014] A first positioning component is used to simultaneously penetrate and connect the second positioning hole and the first positioning hole to prevent the insert plate from moving relative to the connecting sleeve.

[0015] As a preferred embodiment of the present invention, the first positioning component includes a first bolt and a first nut adapted to the first bolt.

[0016] As a preferred embodiment of this invention, the adjustment structure further includes:

[0017] A plug is located on the other side of the connecting sleeve opposite to the socket.

[0018] A fixing block with a slot is fixedly mounted on one side of the swing arm. The plug can be inserted into the slot to connect the connecting sleeve to the swing arm. A third positioning hole is provided on the side of the fixing block, and a fourth positioning hole that matches the third positioning hole is provided on the side of the plug.

[0019] A second positioning component is used to simultaneously penetrate and connect the third and fourth positioning holes to prevent the plug from moving relative to the fixing block.

[0020] As a preferred embodiment of the present invention, the second positioning component includes a second bolt and a second nut adapted to the second bolt.

[0021] As a preferred embodiment of this utility model, an observation groove is provided on one side of the connecting sleeve.

[0022] As a preferred embodiment of this utility model, the linkage structure further includes:

[0023] A swing arm shaft is located at one end of the swing arm near the pressing shaft;

[0024] A swing arm, which is fixedly connected to the pressing shaft;

[0025] A rocker arm pin with a sliding groove is provided. Both ends of the rocker arm pin are rotatably engaged with pin holes on both sides of the rocker arm. One end of the rocker arm shaft passes through the sliding groove and continues to extend in the axial direction.

[0026] An elastic component, disposed at the extension end of the swing arm shaft, is used to pull the swing arm to its reset position.

[0027] As a preferred embodiment of this utility model, the elastic component includes:

[0028] A locking nut is provided on the extended end of the swing arm shaft;

[0029] A spring is fitted outside the rocker arm shaft and between the rocker arm pin and the locking nut.

[0030] The beneficial effects of this utility model are as follows: By adding an adjustment structure between the rocker arm and the guide wheel, this utility model can change the position of the guide wheel on the rocker arm along the length of the movable groove, and directly adjust the length of the cam's force arm. When the guide wheel is close to or far from the main shaft, the sliding stroke of the rocker arm will change accordingly when the cam rotates, causing the swing amplitude of the pressing shaft to change accordingly, thereby realizing the conversion between strong and weak pressing. This solves the problem that the pressing strength of traditional devices is not adjustable due to the fixed position of the guide wheel, and cannot adapt to the pressing requirements of different wire materials and diameters. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0033] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0034] Figure 3 This is a three-dimensional structural diagram of the swing arm, guide wheel, insert plate, and fixing block of this utility model;

[0035] Figure 4 This is a three-dimensional structural diagram of the swing rod, swing arm shaft, and fixing block of this utility model;

[0036] Figure 5 This is a three-dimensional structural diagram of the swing arm, pressing shaft, and swing arm pin of this utility model;

[0037] Figure 6 This is a schematic diagram of the structure of the first type of wire retraction and feeding device in the prior art;

[0038] Figure 7 This is a schematic diagram of the structure of the second type of retraction and wire feeding device in the prior art.

[0039] The markings in the diagram are as follows: 1. Main shaft; 2. Pressing shaft; 3. Swing rod; 4. Movable groove; 5. Swing arm shaft; 6. Swing arm pin; 7. Slide groove; 8. Swing arm; 9. Pin hole; 10. Locking nut; 11. Spring; 12. Cam; 13. Bracket; 14. Guide wheel; 15. Insert plate; 16. First positioning hole; 17. Connecting sleeve; 18. Second positioning hole; 19. First bolt; 20. First nut; 21. Observation slot; 22. Plug; 23. Fixing block; 24. Slot; 25. Third positioning hole; 26. Fourth positioning hole; 27. Second bolt; 28. Second nut. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0041] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] like Figure 1 and Figure 2As shown, a controllable retraction and unloading device includes: a main shaft 1 and a pressing shaft 2; a linkage structure, which includes a cam 12 fixedly connected to the main shaft 1, a rocker arm 3 with a strip-shaped movable groove 4, one end of the main shaft 1 passing through the movable groove 4 and slidingly engaging with the movable groove 4, a guide wheel 14 rotatably disposed on one side of the rocker arm 3 that abuts against the cam 12, and the other side of the rocker arm 3 being movably hinged to the pressing shaft 2. When the main shaft 1 drives the cam 12 to rotate, the cam 12 pushes the guide wheel 14 to make the movable groove 4 of the rocker arm 3 slide relative to the main shaft 1, so that the rocker arm 3 drives the pressing shaft 2 to reciprocate; and an adjustment structure, which is used to adjust the position of the guide wheel 14 on the rocker arm 3 along the length direction of the movable groove 4, so as to change the swing amplitude of the pressing shaft 2, thereby adjusting the pressing strength.

[0043] The above technical solution can adjust the bonding strength. When the servo motor drives the main shaft 1 to rotate through the reducer, the cam 12 pushes the guide wheel 14, forcing the strip-shaped movable groove 4 of the swing rod 3 to slide around the main shaft 1. Through the hinge point of the swing rod 3, the bonding shaft 2 is driven to swing back and forth to complete the bonding. When it is necessary to adjust the bonding strength, the adjustment structure changes the position of the guide wheel 14 on the swing rod 3 along the length of the movable groove 4, directly changing the length of the cam 12's force arm. Specifically, when the guide wheel 14 is close to the main shaft 1, the sliding stroke of the swing rod 3 increases when the cam 12 rotates, resulting in a large swing amplitude of the bonding shaft 2 (strong bonding); conversely, when the guide wheel 14 is far from the main shaft 1, the sliding stroke of the swing rod 3 decreases when the cam 12 rotates, resulting in a small swing amplitude of the bonding shaft 2 (weak bonding). This solves the problem that the bonding strength of traditional devices is not adjustable due to the fixed position of the guide wheel 14, and cannot adapt to the bonding requirements of different wire materials and diameters. It realizes stepless adjustment of the bonding strength and is compatible with different wires such as nylon and polyethylene.

[0044] like Figure 3 As shown, in this embodiment, the adjustment structure includes: a bracket 13, which is rotatably connected to the guide wheel 14, and a plate 15 is formed on the side of the bracket 13 away from the guide wheel 14; a connecting sleeve 17 with an insertion interface at one end, which is fixedly connected to the rocker arm 3, and the plate 15 can be inserted into the insertion interface to connect the bracket 13 and the connecting sleeve 17; the plate 15 has a plurality of first positioning holes 16 along its length direction on its surface; the connecting sleeve 17 has a second positioning hole 18 on its outside that is adapted to the first positioning holes 16; and a first positioning component, which is used to simultaneously pass through and connect the second positioning hole 18 and the first positioning hole 16 to prevent the plate 15 from moving relative to the connecting sleeve 17; preferably, the first positioning component includes a first bolt 19 and a first nut 20 adapted to the first bolt 19.

[0045] The above technical solution can adjust the position of the guide wheel 14 on the swing arm 3. In use, loosen the first nut 20 and pull out the first bolt 19, slide the insert plate 15 until it is aligned with the target hole, insert the first bolt 19 and lock the first nut 20. Therefore, the bracket 13 is inserted into the socket of the connecting sleeve 17 through the insert plate 15. The first bolt 19 passes through the first positioning hole 16 and locks with the second positioning hole 18, thereby fixing the position of the guide wheel 14. The multiple sets of first positioning holes 16 on the insert plate 15 provide discrete adjustment positions. The position adjustment of the guide wheel 14 needs to take into account both the ease of operation and the structural stability. The insert plate 15 has strong shear resistance and avoids displacement of the guide wheel 14 under high-frequency vibration.

[0046] like Figure 3 and Figure 4 As shown, in this embodiment, the adjustment structure further includes: a plug 22, which is disposed on the other side of the connecting sleeve 17 opposite to the socket; a fixing block 23 with a slot 24, the fixing block 23 being fixedly disposed on one side of the rocker arm 3, the plug 22 being able to be inserted into the slot 24 to connect the connecting sleeve 17 to the rocker arm 3, the fixing block 23 having a third positioning hole 25 on its side, and the plug 22 having a fourth positioning hole 26 adapted to the third positioning hole 25 on its side; a second positioning component, which is used to simultaneously pass through and connect the third positioning hole 25 and the fourth positioning hole 26 to prevent the plug 22 from moving relative to the fixing block 23; preferably, the second positioning component includes a second bolt 27 and a second nut 28 adapted to the second bolt 27;

[0047] The above technical solution allows the connecting sleeve 17 to be detachably connected to the swing arm 3. When disassembly is required, loosen the second nut 28 and pull out the second bolt 27, and pull the plug 22 out of the slot 24 of the fixing block 23 to disassemble the connecting sleeve 17. The multi-modal design makes it easy to replace easily damaged and aging parts.

[0048] like Figure 1 and Figure 3 As shown, in this embodiment, an observation slot 21 is provided on one side of the connecting sleeve 17;

[0049] The above technical solution can expose the first positioning hole 16 on the insert plate 15 through the observation groove 21, realize the visualization of the hole position, and reduce the time required to align the hole position.

[0050] like Figure 1 , Figure 2 and Figure 5As shown, in this embodiment, the linkage structure further includes: a swing arm shaft 5, which is disposed at one end of the swing rod 3 near the pressing shaft 2; a swing arm 8, which is fixedly connected to the pressing shaft 2; a swing arm pin 6 with a sliding groove 7, the two ends of the swing arm pin 6 being rotatably engaged with pin holes 9 on both sides of the swing arm 8, one end of the swing arm shaft 5 passing through the sliding groove 7 and extending further in the axial direction; an elastic component, disposed at the extended end of the swing arm shaft 5 for pulling the swing rod 3 to reset; preferably, the elastic component includes: a locking nut 10, which is disposed on the extended end of the swing arm shaft 5; and a spring 11, which is sleeved on the outside of the swing arm shaft 5 and between the swing arm pin 6 and the locking nut 10.

[0051] The above technical solution enables the main shaft 1 to drive the pressing shaft 2 to swing. When the main shaft 1 is driven, it will drive the cam 12 to rotate. The cam 12 will drive the guide wheel 14 to move upward. The guide wheel 14 will drive the swing arm 3 to rise. The swing arm 3 will drive the swing arm 8 to move through the swing arm shaft 5. The swing arm 8 will drive the pressing shaft 2 to swing. This part is the prior art and will not be described in detail here.

[0052] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0053] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A controllable retraction and feeding device, comprising: Main shaft (1) and press-fit shaft (2); The linkage structure includes a cam (12) fixedly connected to the main shaft (1) and a rocker arm (3) with a strip-shaped movable groove (4). One end of the main shaft (1) passes through the movable groove (4) and slides with the movable groove (4). The rocker arm (3) has a guide wheel (14) rotatably arranged on one side that abuts against the cam (12). The other side of the rocker arm (3) is movably hinged to the pressing shaft (2). When the main shaft (1) drives the cam (12) to rotate, the cam (12) pushes the guide wheel (14) to make the movable groove (4) of the rocker arm (3) slide relative to the main shaft (1), so that the rocker arm (3) drives the pressing shaft (2) to reciprocate. The device is characterized in that it further includes: An adjustment structure is used to adjust the position of the guide wheel (14) on the swing arm (3) along the length direction of the movable groove (4) to change the swing amplitude of the pressing shaft (2) and thus adjust the pressing strength.

2. The controllable retraction and feeding device according to claim 1, characterized in that, The adjustment structure includes: A bracket (13) is rotatably connected to the guide wheel (14), and the bracket (13) forms an insert plate (15) on its side away from the guide wheel (14). A connecting sleeve (17) with an insertion interface is provided at one end. The connecting sleeve (17) is fixedly connected to the swing rod (3). The insert plate (15) can be inserted into the insertion port to connect the bracket (13) with the connecting sleeve (17). The insert plate (15) has a plurality of first positioning holes (16) on its surface along its length direction. The connecting sleeve (17) has a second positioning hole (18) on its outside that matches the first positioning holes (16). A first positioning component is used to simultaneously penetrate and connect the second positioning hole (18) and the first positioning hole (16) to prevent the insert (15) from moving relative to the connecting sleeve (17).

3. The controllable retraction and feeding device according to claim 2, characterized in that, The first positioning component includes a first bolt (19) and a first nut (20) adapted to the first bolt (19).

4. The controllable retraction and feeding device according to claim 3, characterized in that, The adjustment structure further includes: A plug (22) is disposed on the other side of the connecting sleeve (17) opposite to the socket; A fixing block (23) with a slot (24) is fixedly installed on one side of the swing arm (3). The plug (22) can be inserted into the slot (24) to connect the connecting sleeve (17) to the swing arm (3). A third positioning hole (25) is provided on the side of the fixing block (23). A fourth positioning hole (26) that matches the third positioning hole (25) is provided on the side of the plug (22). The second positioning component is used to simultaneously penetrate and connect the third positioning hole (25) and the fourth positioning hole (26) to prevent the plug (22) from moving relative to the fixing block (23).

5. The controllable retraction and feeding device according to claim 4, characterized in that, The second positioning assembly includes a second bolt (27) and a second nut (28) adapted to the second bolt (27).

6. The controllable retraction and feeding device according to claim 5, characterized in that, An observation slot (21) is provided on one side of the connecting sleeve (17).

7. The controllable retraction and feeding device according to claim 1, characterized in that, The linkage structure also includes: The swing arm shaft (5) is located at one end of the swing arm (3) near the pressing shaft (2); The swing arm (8) is fixedly connected to the pressing shaft (2); A rocker arm pin (6) with a groove (7) is provided. The two ends of the rocker arm pin (6) are rotatably engaged with the pin holes (9) on both sides of the rocker arm (8). One end of the rocker arm shaft (5) passes through the groove (7) and continues to extend in the axial direction. An elastic component is provided at the extension end of the swing arm shaft (5) for pulling the swing arm (3) to reset it.

8. The controllable retraction and feeding device according to claim 7, characterized in that, The elastic component includes: A locking nut (10) is provided on the extension end of the swing arm shaft (5); A spring (11) is fitted outside the swing arm shaft (5) and between the swing arm pin (6) and the locking nut (10).

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