A mechanism for tying knots before welding railway side terminal plates

Abstract

The present invention provides a mechanism for tying knots before welding of railway side terminal blocks, including a frame and a wire withdrawal door, the wire withdrawal door is connected to the frame, and after connection, a wire threading hole and a guide groove extending inward from the wire threading hole along the butt joint surface are formed on the butt joint surface, and the connected frame and wire withdrawal door also form a positioning hole on the end face of the butt joint surface, the direction of the positioning hole is perpendicular to the direction of the wire threading hole and the positioning hole is connected with the wire threading hole; a transmission device is arranged between the other end of the wire withdrawal door opposite to the end face and the frame; a connecting device is arranged at one end of the transmission device on the frame; and a wire clamping mechanism that can be opened and closed is arranged on the frame outside the wire threading hole. The knotting mechanism provided by the present invention can be accurately positioned, and after the wire threading hole is fed, the wire clamping plate can be controlled to clamp and loosen the wire through a pneumatic device, and the motor drives the gear to open and close the wire withdrawal door to complete the entire knotting process.

Description

Technical Field

[0001] The invention relates to the technical field of railway supporting facilities, in particular to a mechanism for tying knots before welding a railway side connection plate. Background Art

[0002] At present, the welding of railway signal side terminals is mostly done by manual welding. It is necessary to manually insert the wire into the side terminal hole and then manually twist the knot to complete the knot. Manual welding technology requires a lot of manpower and cannot guarantee the quality and accuracy of welding. With the development of science and technology, human beings have higher and higher requirements for welding. Realizing automated welding is an important aspect of current research. Automated welding can reduce the intensity of manual labor, improve welding quality, and improve the appearance and quality of welds. In order to realize the replacement of manual work by machines, relying on robotic arms to coordinate automatic welding has become an inevitable demand of society. Summary of the invention

[0003] The embodiment of the present invention provides a mechanism for tying knots before welding of railway side terminal plates, which can automatically clamp the wires after threading and automatically withdraw the wires after knotting with the help of the rotation of a mechanical arm, thereby solving the problem of low efficiency of manual knotting.

[0004] A mechanism for tying knots before welding of a railway side terminal block comprises a frame and a wire withdrawal door, one side of the wire withdrawal door is connected to the frame by a rotational connection, and after the connection, a wire threading hole and a guide groove extending inward from the wire threading hole along the butt joint surface are formed on the butt joint surface, and a positioning hole is formed on the end surface of the butt joint surface after the connection between the frame and the wire withdrawal door, and the end surface serves as a positioning plate, the direction of the positioning hole is perpendicular to the direction of the wire threading hole, and the positioning hole and the wire threading hole are connected; a transmission device capable of driving the wire withdrawal door to open and close relative to the frame is arranged between the other end of the wire withdrawal door opposite to the end surface and the frame; a connecting device is arranged at one end of the transmission device on the frame for connecting to a mechanical arm; and a wire clamping mechanism capable of opening and closing is arranged on the frame outside the wire threading hole.

[0005] The wire withdrawal door is connected to the frame through a first hinge and a pin shaft.

[0006] A half threading hole and a half guide groove are opened on the wire withdrawal door, and another half threading hole and a half guide groove are opened on the docking surface on the frame, so that the two are connected to form a circular threading hole and a cylindrical guide groove.

[0007] The transmission device comprises:

[0008] The rack is installed in a slide groove arranged on the frame and can slide back and forth along the slide groove;

[0009] A transmission gear set is mounted on the frame and meshes with the rack, thereby driving the rack to slide along the slideway;

[0010] A motor, mounted on the frame and used to drive the transmission gear set;

[0011] The connecting rod has one end hinged on the rack and the other end hinged on the end surface of the wire withdrawal door away from the pin shaft, so as to drive the rack through the transmission gear set and then control the connecting rod to drive the wire withdrawal door to flip open or close along the pin shaft.

[0012] The transmission gear set is a two-stage reduction transmission gear structure.

[0013] The connecting device comprises four sets of screws and nuts connected to the frame.

[0014] The wire clamping mechanism comprises a first clamping block and a second clamping block which are symmetrically arranged. The first clamping block and the second clamping block can move relative to each other so as to clamp the wire which enters the threading hole and is located between the first clamping block and the second clamping block.

[0015] The first clamping block is driven by a first pneumatic device; the second clamping block is driven by a second pneumatic device.

[0016] The knotting mechanism provided by the present invention can be accurately positioned. After the threading hole is threaded, the pneumatic device can control the clamping plate to clamp and loosen the thread, and the motor drives the third gear to open and close the wire withdrawal door to complete the entire knotting process. The entire mechanism is flexible and compact, and can complete both threading and threading and knotting operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereoscopic diagram of a mechanism for tying a railway side terminal plate before welding;

[0018] Figure 2 It is a three-dimensional wire frame diagram of a mechanism for tying knots before welding a railway side terminal plate;

[0019] Figure 3 It is a rear view of a mechanism for tying a railway side terminal plate before welding;

[0020] Figure 4 It is a rear perspective view of a mechanism for tying a railway side terminal plate before welding;

[0021] Figure 5 It is a side view of a mechanism for tying a knot before welding a railway side terminal plate;

[0022] Figure 6 It is an exploded view of a mechanism for tying a railway side terminal plate before welding;

[0023] Figure 7 The present invention is a bottom view of a mechanism for tying a knot before welding a railway side terminal plate.

[0024] In the figure: 1, frame; 2, slide; 3, rack; 4, first gear; 5, motor; 6, second gear; 7, bolt; 8, shaft;

[0025] 11. first nut; 12. second nut; 13. third nut; 14. fourth nut;

[0026] 9. First screw; 10. Second screw; 15. Third screw; 16. Fourth screw;

[0027] 25, fifth screw; 26, sixth screw; 21, seventh screw; 22, eighth screw;

[0028] 17. Pin; 18. Bolt; 19. Connecting rod; 20. Third gear;

[0029] 23. Wire withdrawal door; 24. First loose leaf; 27. Threading hole; 28. Second loose leaf; 29. ​​Air inlet; 30. First pneumatic device; 31. First clamping block; 32. Second clamping block; 33. Second pneumatic device; 34. Positioning plate; 35. Positioning hole. DETAILED DESCRIPTION

[0030] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is by no means limited to any specific configuration and algorithm proposed below, but covers any modification, replacement and improvement of elements, parts and algorithms without departing from the spirit of the present invention. In the following description, known structures and technologies are not shown to avoid unnecessary ambiguity to the present invention.

[0031] Example embodiments will now be described with reference, and the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concept of the example embodiments to those skilled in the art.

[0032] In addition, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present invention. However, those skilled in the art will appreciate that the technical solution of the present invention may be practiced without one or more of the specific details, or other methods, components, materials, etc. may be adopted. In other cases, known structures, materials or operations are not shown or described in detail to avoid blurring the main technical creativity of the present invention.

[0033] like Figure 1-7 As shown, the present embodiment provides a mechanism for tying knots before welding of a railway side terminal block, comprising a frame 1 and a wire withdrawal door 23, one side of the wire withdrawal door 23 is connected to the frame 1 by a rotational connection, and after the connection, a threading hole 27 and a guide groove extending inward from the threading hole along the butt joint surface are formed on the butt joint surface, and a positioning hole 35 is formed on the end surface of the butt joint surface of the connected frame 1 and the wire withdrawal door 23 at the same time, and the end surface serves as a positioning plate 34, and the direction of the positioning hole 35 is perpendicular to the direction of the threading hole and the positioning hole is connected with the threading hole 27; a transmission device capable of driving the wire withdrawal door to open and close relative to the frame is provided between the other end of the wire withdrawal door 23 opposite to the end surface and the frame; a connecting device is provided at one end of the transmission device on the frame for connecting to a mechanical arm; a wire clamping mechanism capable of opening and closing is provided on the frame 1 outside the threading hole.

[0034] The knotting mechanism is connected to the end effector of the robot arm through the first screw 9, the second screw 10, the third screw 15, the fourth screw 16, the first nut 11, the second nut 12, the third nut 13, and the fourth nut 14. The robot arm moves to the designated position of the welding plug plate, and the plug plate is positioned through the positioning hole 35 through the positioning plate 34, and the wire is passed through the hole on the plug plate through the threading hole 27. The first clamping block 31 and the second clamping block 32 are controlled by the first pneumatic device 30 and the second pneumatic device 33 to close the first clamping block 31 and the second clamping block 32 to clamp the wire. After the entire mechanism is withdrawn 30mm, it is rotated 360 degrees counterclockwise at the end of the robot arm to tie a knot, and the first pneumatic device 30 and the second pneumatic device 33 are controlled to open the first clamping block 31 and the second clamping block 32 again. The motor 5 transmits power through the meshing of the first gear 4 and the second gear 6, driving the third gear 20 to move on the rack 3, and controls the wire withdrawal door 23 to open through the connecting rod 19, withdraws the wire to complete the operation, and the entire mechanism moves outward a certain distance, and the wire withdrawal door is closed through the transmission device and returns to the designated position for the next operation.

[0035] The wire withdrawal door is connected to the frame 1 via a first hinge 24 and a pin 17 .

[0036] A half threading hole and a half groove of the guide groove are opened on the wire withdrawal door 23, and another half threading hole and a half groove of the guide groove are opened on the butt joint surface of the frame, so that the two are connected to form a circular threading hole 27 and a cylindrical guide groove. The wire withdrawal mechanism is composed of the wire withdrawal door 23, the slide 2, the rack 3, the shaft 8, the first gear 4, the motor 5, the second gear 6, the bolt 7, the third gear 20, the connecting rod 19, the bolt 18, the pin 17, the first loose leaf 24, the second loose leaf 28, the fifth screw 25, the sixth screw 26, the seventh screw 21, and the bottom plate screw 22. The first gear 4 is meshed with the second gear 6, and the first gear 4 is connected with the third gear 20 through the shaft 8. The third gear 20 is fixed on the rack 3, and the rack 3 is fixed on the slide 2. The power is transmitted by the motor 5 to drive the third gear to rotate, so that the third gear 20 rolls on the rack 3, forming a transmission device. The first hinge 24 and the second hinge 28 are respectively fixed to the wire withdrawal door 23 and the frame 1 by the seventh screw 21, the eighth screw 22, the fifth screw 25 and the sixth screw 26, and are connected together by the pin 17. The wire withdrawal door 23 is connected to the transmission device by the connecting rod 19 to control the opening and closing of the wire withdrawal door 23.

[0037] The transmission device comprises:

[0038] The rack 3 is installed in a slide groove arranged on the frame 1 and can slide back and forth along the slide groove;

[0039] The transmission gear set is mounted on the frame and meshes with the rack 3, thereby driving the rack to slide along the slide groove; the transmission gear set includes a second gear 6 connected to the output shaft of the motor, a first gear 4 with a large diameter and a third gear 20 with a small diameter connected coaxially, the second gear 6 meshes with the first gear 4, and the third gear 20 meshes with the rack 3;

[0040] The motor 5 is mounted on the frame 1 and is used to drive the transmission gear set;

[0041] The connecting rod 19 is hinged at one end on the rack 3 and at the other end on the end face of the wire withdrawal door away from the pin shaft, thereby driving the rack through the transmission gear set and then controlling the connecting rod to drive the wire withdrawal door to flip open or close along the pin shaft.

[0042] The transmission gear set is a two-stage reduction transmission gear structure.

[0043] The connecting device comprises four sets of screws and nuts connected to the frame.

[0044] The wire clamping mechanism includes two symmetrically arranged first clamping blocks 31 and second clamping blocks 32, and the two clamping blocks can move relative to each other, so as to clamp the wire that enters the threading hole and is located between the two. The first clamping block 31 is driven by the first pneumatic device 30; the second clamping block 32 is driven by the second pneumatic device 33. Specifically, the wire clamping mechanism is composed of the first clamping block 31, the second clamping block 32, the second pneumatic device 33, the first pneumatic device 30, and the left and right air inlet holes 29, wherein the first clamping block 31, the left air inlet hole 29 and the first pneumatic device 30 are fixed on the left side of the frame 1, and the second clamping block 32, the right air inlet hole 29 and the second pneumatic device 33 are fixed on the right side of the frame. The opening and closing of the first clamping block 31 and the second clamping block 32 are controlled by air intake through the left and right air inlet holes 29, so that the wire passing through the hole can be clamped and released.

[0045] The knotting mechanism provided by the present invention can be accurately positioned. After the threading hole is threaded, the pneumatic device can control the clamping plate to clamp and loosen the thread, and the motor drives the third gear to open and close the wire withdrawal door to complete the entire knotting process. The entire mechanism is flexible and compact, and can complete both threading and threading and knotting operations.

[0046] Those skilled in the art should understand that the above embodiments are exemplary rather than restrictive. Different technical features appearing in different embodiments can be combined to achieve beneficial effects. Those skilled in the art should be able to understand and implement other variations of the disclosed embodiments based on the study of the specification and claims. In the claims, the term "comprising" does not exclude other devices or steps; the indefinite article "a" does not exclude a plurality; the terms "first" and "second" are used to indicate names rather than to indicate any particular order.

Claims

1. A mechanism for tying knots before welding a railway side terminal plate, characterized in that: It comprises a frame and a wire withdrawal door, one side of which is connected to the frame by a rotating connection, and after the connection, a threading hole and a guide groove extending from the threading hole to the inside along the butt joint surface are formed on the butt joint surface, and a positioning hole is formed on the end surface of the butt joint surface of the connected frame and the wire withdrawal door at the same time, and the end surface serves as a positioning plate, and the direction of the positioning hole is perpendicular to the direction of the threading hole and the positioning hole is connected with the threading hole; a transmission device capable of driving the wire withdrawal door to open and close relative to the frame is arranged between the other end of the wire withdrawal door opposite to the end surface and the frame; a connecting device is arranged at one end of the transmission device on the frame for connecting with a mechanical arm; a wire clamping mechanism capable of opening and closing is arranged on the frame outside the threading hole; A half threading hole and a half guide groove are opened on the wire withdrawal door, and another half threading hole and a half guide groove are opened on the docking surface on the frame, so that the two are connected to form a circular threading hole and a cylindrical guide groove.

2. The mechanism according to claim 1, characterized in that: The wire withdrawal door is connected to the frame through a first hinge and a pin shaft.

3. The mechanism according to claim 1, characterized in that: The transmission device comprises: The rack is installed in a slide groove arranged on the frame and can slide back and forth along the slide groove; A transmission gear set is mounted on the frame and meshes with the rack, thereby driving the rack to slide along the slideway; A motor, mounted on the frame and used to drive the transmission gear set; The connecting rod has one end hinged on the rack and the other end hinged on the end surface of the wire withdrawal door away from the pin shaft, so as to drive the rack through the transmission gear set and then control the connecting rod to drive the wire withdrawal door to flip open or close along the pin shaft.

4. The mechanism according to claim 3, characterized in that: The transmission gear set is a two-stage reduction transmission gear structure.

5. The mechanism according to claim 1, characterized in that: The connecting device comprises four sets of screws and nuts connected to the frame.

6. The mechanism according to claim 1, characterized in that: The wire clamping mechanism comprises a first clamping block and a second clamping block which are symmetrically arranged. The first clamping block and the second clamping block can move relative to each other so as to clamp the wire which enters the threading hole and is located between the first clamping block and the second clamping block.

7. The mechanism according to claim 6, characterized in that The first clamping block is driven by a first pneumatic device; the second clamping block is driven by a second pneumatic device.

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