A heart-shaped ring forming device for processing suspension strings

Abstract

The present invention relates to a heart-shaped ring forming device for processing suspension strings, comprising a frame, a processing platform fixedly mounted on the upper surface of the frame, a jig limiting groove provided on the processing platform, a jig module fixedly mounted on the frame at the side of the jig limiting groove, the jig module comprising a copper nose fixing jig, the copper nose fixing jig being mounted in the jig limiting groove; the crimping device also comprises a crimping module fixedly mounted on the frame, the crimping module comprising a crimping cylinder providing power for crimping and a crimping die fixedly mounted at the output end of the crimping cylinder. The present invention has a simple structure and fully automated operation, can ensure consistent crimping quality, effectively ensure the processing quality of suspension strings, and can match an automated suspension string processing production line.

Description

Technical Field

[0001] The invention relates to the technical field of suspension string production equipment, and in particular to a heart-shaped ring forming device for suspension string processing. Background Art

[0002] The railway overhead contact wire is one of the important components of the chain suspension. The contact wire is hung on the load-bearing cable through the wire. Adjusting the length of the wire can ensure the structural height of the contact suspension and the working height of the contact wire from the rail surface. In order to ensure the stability of the railway overhead contact power supply system, the processing quality of the wire is required to be high. The wire must be free of loose strands and broken strands. The length deviation of the wire should not exceed 1.5mm, and the head at the end of the wire should not be less than 50mm. The wire must be pre-tensioned to ensure that the wire remains in a stressed state, effectively avoiding deformation caused by the force on the wire, and meeting the high-precision requirements of the high-speed railway for the wire. How to accurately and efficiently complete the pre-assembly processing of the wire is of great significance.

[0003] In the traditional railway electrical system construction, the hanging string is generally prepared by manual prefabrication, which has low prefabrication efficiency. In particular, the processing of the heart-shaped ring and the clamp-shaped tube is relatively complicated. The hanging string needs to pass through the clamp-shaped tube first, then be put on the heart-shaped ring, and finally tighten the hanging string to clamp the clamp-shaped tube. The traditional manual prefabrication method is inefficient and costly. Summary of the invention

[0004] The present invention aims at the technical problems existing in the prior art and provides a heart-shaped ring forming device for processing suspension strings, which can be fully automatically operated, has high processing efficiency and can effectively ensure the processing quality of the suspension strings.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: a heart-shaped ring forming device for processing a suspension string, comprising a frame, a fixed workbench for processing a heart-shaped ring is installed at the rear of the frame, a wire feeding groove for the suspension string is arranged at the front end of the fixed workbench, a clamp-shaped tube pressing mechanism for fixing and pressing a clamp-shaped tube is arranged between the wire feeding groove and the fixed workbench; the wire feeding groove comprises a wire feeding channel composed of a wire feeding limit block and a return wire guide block, and the suspension string that bypasses the heart-shaped ring passes through the clamp-shaped tube and is led out through the return wire guide block; a heart-shaped ring locking mechanism for fixing the heart-shaped ring is arranged on the fixed workbench, and a heart-shaped ring pressing mechanism for winding the suspension string onto the heart-shaped ring and a pressing guide mechanism for leading out the wound suspension string are arranged around the heart-shaped ring locking mechanism.

[0006] Based on the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the clamp-type tube clamping mechanism includes clamping assemblies symmetrically arranged on both sides of the suspension string, and the clamping assemblies include a clamping cylinder and a clamping mold.

[0008] Preferably, the clamp tube clamping mechanism also includes a telescopic wedge that is wedged into the clamping assembly when the clamp tube is pre-compressed to avoid complete compression of the clamp tube, and the telescopic wedge is slidably connected to the bottom of the wire feeding groove.

[0009] Preferably, the clamp-shaped tube clamping mechanism also includes a slide symmetrically arranged at the bottom of the wire feeding trough, and the telescopic wedge is arranged in the slide; the telescopic wedge includes a telescopic connecting rod and a wedge-shaped block arranged at the top of the telescopic connecting rod; the clamp-shaped tube clamping mechanism also includes a lifting and telescopic cylinder fixed on the frame, and the output end of the lifting and telescopic cylinder is fixedly connected to the tail end of the telescopic connecting rod.

[0010] Furthermore, the heart-shaped ring pressing mechanism includes a pressing assembly, which includes a sliding limit plate, on which a guide slider is slidably connected, and the pressing mechanism also includes a pushing cylinder for driving the guide slider, a forming motor is fixedly mounted on the guide slider, and a forming wheel for winding is mounted on the output shaft of the forming motor.

[0011] Preferably, the heart-shaped ring pressing mechanism also includes a pressing workbench, the pressing assembly and the pushing cylinder are both fixedly mounted on the pressing workbench, and the heart-shaped ring pressing mechanism also includes a lifting assembly for lifting the pressing workbench.

[0012] Preferably, the jacking assembly includes a plurality of jacking columns which are passed through the fixed workbench and fixedly connected to the pressing workbench at the upper ends, the lower ends of the jacking columns are fixedly connected to a fixed plate, and the jacking assembly also includes a jacking cylinder fixedly mounted on the frame, and the output end of the jacking cylinder is fixedly connected to the bottom of the fixed plate.

[0013] Furthermore, the pressing guide mechanism includes a guide plate for guiding the suspension string and a driving cylinder for driving the guide plate to extend and retract.

[0014] Furthermore, the heart-shaped ring locking mechanism includes a positioning block whose shape matches the heart-shaped ring, the positioning block is slidably connected in the limiting groove of the limiting plate, and a lifting cylinder is fixedly arranged at the bottom of the positioning block to drive the positioning block to move up and down.

[0015] Preferably, both side surfaces of the limit plate are slidably connected with slide rails, and a locking assembly is further provided on the side of the slide rail away from the lifting cylinder for resetting the locking positioning block so that it does not over-deviate.

[0016] Preferably, the locking assembly includes a guide rod, a return compression spring and a locking slider; one end of the guide rod is fixedly connected to one side of the limit plate, the locking slider and the return compression spring are sequentially passed through the guide rod, and one end of the return compression spring is fixedly connected to the guide rod through a locking nut, and the other end abuts against the side surface of the locking slider.

[0017] Furthermore, the heart-shaped ring forming device also includes a telescopic cover mechanism, which includes a cover for closing the top opening of the wire feeding slot, and the cover is slidably connected to the top of the wire feeding limit block; the telescopic cover mechanism also includes a telescopic cylinder for driving the cover.

[0018] Preferably, the cover plate is slidably connected to the wire feeding limit block via a dovetail groove.

[0019] Furthermore, the heart-shaped ring forming device also includes a suspension string locking mechanism arranged on the return line guide block, the suspension string locking mechanism includes a connecting rod and a locking wheel installed at the end of the connecting rod, and also includes a motor that drives the connecting rod to rotate so that the locking wheel clamps the suspension string.

[0020] The beneficial effects of the present invention are as follows: the present invention can automatically complete the pre-crimping of the clamp tube, and then automatically wind the suspension string onto the heart-shaped ring, and crimp the clamp tube after the winding is completed, and the whole process basically realizes full-automatic operation, with high processing efficiency, and can greatly reduce labor intensity; at the same time, the present invention adopts a cylinder to cooperate with a crimping mold, and uses a mechanical crimping method for crimping, and the crimping quality far exceeds that of manual crimping, and continuous processing can ensure that the crimping quality is always consistent, which greatly improves the processing quality of the suspension string; the present invention uses a simple mechanical structure to realize automatic operation of the complicated heart-shaped ring and clamp tube processing process, which can greatly reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the top view of the structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the main structure of the present invention;

[0024] Figure 4 for Figure 3 A schematic diagram of the local enlarged structure at point A in the middle;

[0025] Figure 5 It is a structural schematic diagram of the clamp-type tube clamping mechanism;

[0026] Figure 6 for Figure 5 A schematic diagram of the structure from another perspective;

[0027] Figure 7 It is a structural schematic diagram of the heart-shaped ring pressing mechanism;

[0028] Figure 8 for Figure 7 A side view structural schematic diagram of;

[0029] Fig. 9 It is a structural schematic diagram of the heart-shaped ring locking mechanism;

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1. Frame, 2. Wire feeding groove, 21. Wire feeding limit block, 22. Return wire guide block, 23. Wire feeding channel, 3. Clamp tube clamping mechanism, 31. Clamping assembly, 310. Clamping cylinder, 311. Clamping mold, 32. Telescopic wedge, 320. Wedge fast, 321. Telescopic connecting rod, 33. Slide, 34. Lifting telescopic cylinder, 4. Heart-shaped ring pressing mechanism, 41. Pressing workbench, 42. Pressing assembly, 420. Sliding limit plate, 421. Guide slide block, 422. Push cylinder, 423. forming wheel, 424, forming motor, 43, lifting cylinder, 44, lifting column, 5, pressing guide mechanism, 6, heart-shaped ring locking mechanism, 61, limit plate, 62, positioning block, 63, lifting cylinder, 64, slide rail, 65, locking assembly, 650, guide rod, 651, reset clamping spring, 652, locking slider, 66, locking nut, 67, partition, 7, fixed workbench, 8, telescopic cover mechanism, 81, telescopic cylinder, 82, cover, 9, hanging string, 10, hanging string locking mechanism. DETAILED DESCRIPTION

[0032] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0033] like Figure 1 to Figure 3 As shown, a heart-shaped ring forming device for processing a suspension string of the present invention comprises a frame 1, a fixed workbench 7 for processing a heart-shaped ring is installed at the rear of the frame 1, a wire feeding groove 2 for a suspension string 9 is arranged at the front end of the fixed workbench 7, and a clamp-shaped tube pressing mechanism 3 for fixing and pressing the clamp-shaped tube is arranged between the wire feeding groove 2 and the fixed workbench 7.

[0034] The wire feeding groove 2 includes a wire feeding channel 23 composed of a wire feeding limit block 21 and a return wire guide block 22 . The suspension wire 9 that passes around the heart-shaped ring passes through the clamp tube and is led out through the return wire guide block 22 .

[0035] The fixed workbench 7 is provided with a heart-shaped ring locking mechanism 6 for fixing the heart-shaped ring, and a heart-shaped ring pressing mechanism 4 for winding the suspension string 9 onto the heart-shaped ring and a pressing guide mechanism 5 for leading out the wound suspension string are provided around the heart-shaped ring locking mechanism 6.

[0036] like Figure 4 , Figure 6As shown, in order to prevent the suspension string 9 from falling out during processing, the heart-shaped ring forming device of the present invention also includes a telescopic cover plate mechanism 8, and the telescopic cover plate mechanism 8 includes a cover plate 82 for closing the top opening of the wire feeding groove 2. The cover plate 82 is slidably connected to the top of the wire feeding limit block 21. The telescopic cover plate mechanism 8 also includes a telescopic cylinder 81 for driving the cover plate 82.

[0037] Preferably, the cover plate 82 is slidably connected to the wire feeding limit block 21 via a dovetail groove.

[0038] In order to tighten the suspension string 9 during processing and keep the suspension string 9 in a taut state to improve the processing quality, the heart-shaped ring forming device of the present invention also includes a suspension string locking mechanism 10 arranged on the return line guide block 22. The suspension string locking mechanism 10 includes a connecting rod and a locking wheel installed at the end of the connecting rod. The connecting rod is driven to rotate by a motor, and the locking wheel can be driven to move to the wire groove of the return line guide block 22 to lock the suspension string 9.

[0039] like Figure 4 , Figure 5 As shown, the clamp-type pipe clamping mechanism 3 of the present invention may adopt the following structure: it includes clamping assemblies 31 symmetrically arranged on both sides of the suspension string 9 , and the clamping assembly 31 includes a clamping cylinder 310 and a clamping mold 311 .

[0040] In order to pre-tighten the clamp tube, the clamp tube clamping mechanism 3 may also include a telescopic wedge 32 that wedges into the clamping assembly 31 when the clamp tube is pre-tightened to avoid completely tightening the clamp tube. The telescopic wedge 32 is slidably connected to the bottom of the wire feeding groove 2.

[0041] Preferably, the clamp-shaped pipe clamping mechanism 3 further includes a slideway 33 symmetrically arranged at the bottom of the wire feeding groove 2, and the telescopic wedge 32 is arranged in the slideway 33. The slideway 33 can be composed of two sliders. The telescopic wedge 32 can adopt the following structure, including a telescopic connecting rod 321 and a wedge-shaped block 320 arranged at the top of the telescopic connecting rod 321. The clamp-shaped pipe clamping mechanism 3 also includes a lifting and telescopic cylinder 34 fixed on the frame 1, and the output end of the lifting and telescopic cylinder 34 is fixedly connected to the tail end of the telescopic connecting rod 321. The telescopic connecting rod 321 can be formed by hingedly connecting multiple rods.

[0042] In this way, the telescopic wedge 32 can be wedged into the clamping assembly 31 during the winding stage to limit the position of the clamping assembly 31 and prevent the clamp tube from being completely clamped.

[0043] like Figure 6 , Figure 7As shown, the heart-shaped ring pressing mechanism 4 of the present invention includes a pressing component 42, and the pressing component 42 includes a sliding limit plate 420, and a guide slider 421 is slidably connected to the sliding limit plate 420. The pressing mechanism 4 also includes a pushing cylinder 422 for driving the guide slider 421, and a forming motor 424 is fixedly installed on the guide slider 421. A forming wheel 423 for winding is installed on the output shaft of the forming motor 424.

[0044] Preferably, the heart-shaped ring pressing mechanism 4 also includes a pressing workbench 41 , the pressing assembly 42 and the pushing cylinder 422 are both fixedly mounted on the pressing workbench 41 , and the heart-shaped ring pressing mechanism 4 also includes a lifting assembly for lifting the pressing workbench 41 .

[0045] Preferably, the jacking assembly includes a plurality of jacking columns 44 which are passed through the fixed workbench 7 and fixedly connected to the pressing workbench 41 at the upper ends, and the lower ends of the jacking columns 44 are fixedly connected to a fixed plate. The jacking assembly also includes a jacking cylinder 43 fixedly mounted on the frame 1, and the output end of the jacking cylinder 43 is fixedly connected to the bottom of the fixed plate.

[0046] An annular guide groove may be provided at the bottom of the sliding limit plate 420 of the heart-shaped ring pressing mechanism 4 or on the pressing workbench 41 for guiding the suspension string 9 .

[0047] The pressing guide mechanism 5 of the present invention comprises a guide plate for guiding the suspension string 9 and a driving cylinder for driving the guide plate to extend and retract. A semi-annular guide groove can be provided on the guide plate for guiding the suspension string 9.

[0048] The heart-shaped ring locking mechanism 6 of the present invention includes a positioning block 62 whose shape matches the heart-shaped ring. The positioning block 62 is slidably connected in the limiting groove of the limiting plate 61. A lifting cylinder 63 is fixedly arranged at the bottom of the positioning block 62 to drive the positioning block 62 to move up and down.

[0049] Preferably, the two side surfaces of the limit plate 61 are slidably connected with slide rails 64, and the side of the slide rail 64 away from the lifting cylinder 63 is also provided with a locking assembly 65 for resetting the locking positioning block 62 so that it does not deviate too much. A partition plate 67 can also be detachably connected to the side of the slide rail 64 opposite to the locking assembly 65.

[0050] Preferably, the locking assembly 65 includes a guide rod 650, a return and compression spring 651, and a locking slider 652. One end of the guide rod 650 is fixedly connected to one side of the limit plate 61, and the locking slider 652 and the return and compression spring 651 are sequentially penetrated on the guide rod 650, and one end of the return and compression spring 651 is fixedly connected to the guide rod 650 through a locking nut 66, and the other end abuts against the side surface of the locking slider 652.

[0051] In this way, a buffer force can be provided during the process of tightening the suspension string 9 , thereby preventing the heart-shaped ring from coming out due to being touched by the suspension string 9 when the suspension string 9 is tightened.

[0052] The working principle of the present invention is as follows:

[0053] like Figure 1 , Figure 6 As shown, when the device is processed, the clamp tube is first placed in the clamping position, the telescopic wedge 32 is extended, the wedge block 320 is pushed between the two clamping dies 311 of the clamping assembly 31, the clamping cylinder 310 is started, and the clamping die 311 is pushed to clamp the clamp tube and fix it, thereby completing the pre-clamping of the clamp tube.

[0054] like Figure 4 As shown, after pre-compression is completed, the suspension string 9 is fed in through the wire feeding channel 23 of the wire feeding groove 2. When the suspension string 9 is fed in, the telescopic cover mechanism 8 is started, and the cover 82 seals the top of the wire feeding channel 23 to prevent the suspension string 9 from falling out.

[0055] like Fig. 9 As shown, after the hanging string 9 is fed into the wire feeding groove 2, the heart-shaped ring is placed at the corresponding position of the fixed workbench 7, the heart-shaped ring locking mechanism 6 is started, the lifting cylinder 63 pushes the positioning block 62 to rise, and the positioning block 62 penetrates into the heart-shaped ring to fix the heart-shaped ring.

[0056] like Figure 7 , Figure 8 As shown, after the heart-shaped ring is fixed, the wire is continuously fed, and the suspension string 9 passes through the clamp tube and enters the fixed workbench 7. At this time, the heart-shaped ring pressing mechanism 4 is started, and the lifting cylinder 43 retracts the lifting column 44, and the pressing workbench 41 is pulled back to the fixed workbench 7. Then the push cylinder 422 pulls the guide slider 421 back along the sliding limit plate 420, and the forming motor 424 is started to drive the forming wheel 423 to rotate, guiding the fed suspension string 9 to move around the heart-shaped ring in a circular direction. After the suspension string 9 runs half a circle, the pressing guide mechanism 5 is started, and the driving cylinder pushes out the guide plate to limit the running direction of the suspension string 9. At this time, the push cylinder 422 pushes the guide slider 421 along the sliding limit plate 420, and cooperates with the guide plate to allow the suspension string 9 to continue to move around the heart-shaped ring in a circular direction until the suspension string 9 passes through the clamp tube in the reverse direction and enters the wire groove of the return wire guide block 22, and the winding process is completed.

[0057] like Figure 2 , Figure 3 As shown, after the winding process is completed, the string locking mechanism 10 is started to lock and fix the string 9. Then the lifting cylinder 43 of the heart-shaped ring pressing mechanism 4 raises the lifting column 44, lifts the pressing workbench 41, and lifts it away from the fixed workbench 7, while the driving cylinder of the pressing guide mechanism 5 retracts the guide plate at the same time. Then the string 9 is reversed and pulled until the string 9 is tightly wound around the heart-shaped ring and kept in a taut state.

[0058] like Figure 6 As shown, when the suspension string 9 is in a taut state, the telescopic wedge 32 is retracted, and the clamping assembly 31 is started again. The clamping cylinder 310 pushes the clamping die 311 to clamp the clamp tube. After clamping, the clamping cylinder 310 is retracted, the suspension string locking mechanism 10 releases the suspension string 9, and the telescopic cover mechanism 8 is also retracted. The suspension string 9 is taken out, and the processing of the heart-shaped ring and the clamp tube is completed.

[0059] Repeat the above operations to realize the automatic processing of the heart-shaped ring and the clamp-shaped tube.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heart-shaped ring forming device for processing suspension strings, characterized in that: The invention comprises a frame (1), a fixed workbench (7) for processing a heart-shaped ring is installed at the rear of the frame (1), a wire feeding groove (2) for a suspension string (9) is arranged at the front end of the fixed workbench (7), and a clamp-shaped tube pressing mechanism (3) for fixing and pressing a clamp-shaped tube is arranged between the wire feeding groove (2) and the fixed workbench (7); the wire feeding groove (2) comprises a wire feeding channel (23) composed of a wire feeding limit block (21) and a return wire guide block (22), and the suspension string (9) bypassing the heart-shaped ring passes through the clamp-shaped tube and is guided out through the return wire guide block (22); a heart-shaped ring locking mechanism (6) for fixing the heart-shaped ring is arranged on the fixed workbench (7), and a heart-shaped ring pressing mechanism (3) for winding the suspension string (9) onto the heart-shaped ring is arranged around the heart-shaped ring locking mechanism (6). The invention relates to a clamp tube clamping mechanism (4) and a pressing guide mechanism (5) for guiding the wound suspension wire; the clamp tube clamping mechanism (3) comprises a pressing assembly (31) symmetrically arranged on both sides of the suspension wire (9), the pressing assembly (31) comprising a pressing cylinder (310) and a pressing mold (311); the clamp tube clamping mechanism (3) also comprises a telescopic wedge (32) which is wedged into the pressing assembly (31) when the clamp tube is pre-pressed to avoid completely pressing the clamp tube, the telescopic wedge (32) being slidably connected to the bottom of the wire feeding groove (2); the clamp tube clamping mechanism (3) also comprises a slideway (33) symmetrically arranged at the bottom of the wire feeding groove (2), the telescopic wedge (32) being arranged in the slideway (33); the telescopic wedge (32) comprises a telescopic connecting rod (321 ) and a wedge-shaped block (320) arranged at the top of the telescopic connecting rod (321); the clamp-shaped tube pressing mechanism (3) also includes a lifting telescopic cylinder (34) fixed on the frame (1), and the output end of the lifting telescopic cylinder (34) is fixedly connected to the tail end of the telescopic connecting rod (321); the heart-shaped ring pressing mechanism (4) includes a pressing component (42), and the pressing component (42) includes a sliding limit plate (420), and a guide slider (421) is slidably connected to the sliding limit plate (420), and the pressing mechanism (4) also includes a pushing cylinder (422) for driving the guide slider (421), and a forming motor (424) is fixedly installed on the guide slider (421) for winding the forming wheel (421). 23) is installed on the output shaft of the forming motor (424); the heart-shaped ring pressing mechanism (4) also includes a pressing workbench (41), the pressing assembly (42) and the pushing cylinder (422) are both fixedly installed on the pressing workbench (41), and the heart-shaped ring pressing mechanism (4) also includes a lifting assembly for lifting the pressing workbench (41); the lifting assembly includes a plurality of lifting columns (44) which are penetrated on the fixed workbench (7) and fixedly connected to the pressing workbench (41) at the upper end, and the lower end of the lifting column (44) is fixedly connected to a fixed plate, and the lifting assembly also includes a lifting cylinder (43) fixedly installed on the frame (1), and the output end of the lifting cylinder (43) is fixedly connected to the bottom of the fixed plate;The heart-shaped ring locking mechanism (6) includes a positioning block (62) whose shape matches the heart-shaped ring. The positioning block (62) is slidably connected in the limiting groove of the limiting plate (61). A lifting cylinder (63) for driving the positioning block (62) to move up and down is fixedly arranged at the bottom of the positioning block (62); the two side surfaces of the limiting plate (61) are slidably connected with slide rails (64). The side of the slide rail (64) away from the lifting cylinder (63) is also provided with a locking assembly (65) for resetting the locking positioning block (62) so that it does not deviate too much; the heart-shaped ring forming device also includes a suspension string locking mechanism (10) arranged on the return line guide block (22), and the suspension string locking mechanism (10) includes a connecting rod and a locking wheel installed at the end of the connecting rod, and also includes a motor for driving the connecting rod to rotate so that the locking wheel clamps the suspension string (9). ; 2. The heart-shaped ring forming device for processing suspension strings according to claim 1, characterized in that: The pressing guide mechanism (5) comprises a guide plate for guiding the suspension string (9) and a driving cylinder for driving the guide plate to extend and retract.

3. The heart-shaped ring forming device for processing suspension strings according to claim 1, characterized in that: The locking assembly (65) comprises a guide rod (650), a return compression spring (651) and a locking slider (652); one end of the guide rod (650) is fixedly connected to one side of the limit plate (61), the locking slider (652) and the return compression spring (651) are sequentially inserted on the guide rod (650), and one end of the return compression spring (651) is fixedly connected to the guide rod (650) through a locking nut (66), and the other end abuts against the side surface of the locking slider (652).

4. The heart-shaped ring forming device for processing suspension strings according to claim 1, characterized in that: The heart-shaped ring forming device further comprises a telescopic cover plate mechanism (8), wherein the telescopic cover plate mechanism (8) comprises a cover plate (82) for closing the top opening of the wire feeding groove (2), wherein the cover plate (82) is slidably connected to the top of the wire feeding limit block (21); the telescopic cover plate mechanism (8) further comprises a telescopic cylinder (81) for driving the cover plate (82).

5. The heart-shaped ring forming device for processing suspension strings according to claim 4, characterized in that: The cover plate (82) is slidably connected to the wire feeding limit block (21) via a dovetail groove.

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