Wire feeding mechanism capable of adjusting conveying length

Abstract

The utility model discloses a wire rod feeding mechanism capable of adjusting the conveying length. The wire rod feeding mechanism comprises a lathe bed, a feeding mechanism and a transmission mechanism. A mounting seat is arranged on the lathe bed; the feeding mechanism is arranged on the mounting seat and is used for conveying wires; the transmission mechanism comprises a first transmission gear, a feeding swing arm rotationally connected with the lathe bed, a first feeding connecting rod used for connecting the first transmission gear and the feeding swing arm, a one-way clutch connected with the feeding mechanism, a rocker arm connected with the one-way clutch and a second feeding connecting rod used for connecting the rocker arm and the feeding swing arm. A plurality of mounting holes arranged in the length direction of the feeding swing arm are formed in one end of the feeding swing arm, and one end of the first feeding connecting rod is rotationally connected with any mounting hole so as to adjust the swing angle of the swing arm. According to the wire rod feeding mechanism capable of adjusting the conveying length, the function of rapidly adjusting the conveying length of the wire rod is achieved, the adjusting precision is high, and different machining requirements can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of cold heading machines, in particular to a wire feeding mechanism with adjustable conveying length. Background Art

[0002] Cold heading machine is a device that uses a mold to upset wire at room temperature. It can minimize cutting work and directly form it into the required shape and size. It can not only save materials, but also greatly improve production efficiency and the mechanical strength of upset parts. The cold heading machine needs to use a feeding mechanism during use to realize the delivery of wire into the bed.

[0003] The feeding mechanism of the existing cold heading machine controls the feeding length of the wire by adjusting the swing angle of the rocker arm connected to the one-way clutch to meet the needs of conveying wires of different lengths forward. For example, a cold heading machine is disclosed in the patent document with the authorization announcement number CN110695284B, which specifically discloses: an adjustment disk is fixedly provided on the side of the feeding gear, a feeding adjustment groove is provided on the adjustment disk along the radial direction of the feeding gear, a feeding adjustment seat is provided in the feeding adjustment groove for sliding movement, a feeding adjustment bolt that is threadedly matched with the feeding adjustment seat is provided on the adjustment disk along the direction of the feeding adjustment groove, a feeding arm that is linked and matched through a one-way clutch is provided on the axle of the active feeding wheel, and a feeding rod is provided between the feeding arm and the feeding adjustment seat. The position of the feeding adjustment seat is adjusted by rotating the feeding adjustment bolt to adjust the eccentric distance between the feeding rod and the feeding gear, and the purpose of controlling the swing angle of the feeding arm is achieved under the transmission of the feeding rod, so as to adjust the conveying length of the wire. However, in the above-mentioned adjustment method, the adjustable stroke of the feeding adjustment slot is short, and a small movement of the adjustment disk will cause a large change in the conveying length of the wire, the adjustment accuracy is low, and it takes a long time.

[0004] It can be seen that the existing technology still needs to be improved and enhanced. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a wire feeding mechanism with adjustable conveying length, aiming to solve the technical problems of low adjustment accuracy and long time consumption.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A wire feeding mechanism with adjustable conveying length, comprising:

[0008] A bed body, wherein a mounting seat is provided on the bed body;

[0009] A feeding mechanism, arranged on the mounting seat, for conveying wire;

[0010] The transmission mechanism includes a first transmission gear, a feeding swing arm rotatably connected to the bed, a first feeding connecting rod used to connect the first transmission gear and the feeding swing arm, a one-way clutch connected to the feeding mechanism, a rocker arm connected to the one-way clutch, and a second feeding connecting rod used to connect the rocker arm and the feeding swing arm. One end of the feeding swing arm is provided with a plurality of mounting holes arranged along its length direction. One end of the first feeding connecting rod is rotatably connected to any mounting hole to adjust the swing angle of the rocker arm.

[0011] Furthermore, a long connecting portion is provided at one end of the feeding swing arm, an avoidance groove is opened in the middle of the long connecting portion, and a plurality of mounting holes are located on both sides of the long connecting portion and are connected to the avoidance groove; a first Y-shaped connecting portion is provided at the other end of the feeding swing arm, and the first Y-shaped connecting portion is rotatably connected to one end of the second feeding connecting rod.

[0012] Furthermore, a second Y-shaped connecting portion is provided at the other end of the second feeding connecting rod, and the second Y-shaped connecting portion is rotatably connected to the end of the rocker arm.

[0013] Furthermore, the first feeding connecting rod is connected to the mounting hole through a connecting rod pin, a slot is provided on the connecting rod pin, and a pressing plate which is inserted into the slot is provided on the long connecting part.

[0014] Furthermore, the feeding mechanism includes two driven components and a second transmission gear rotatably connected to the mounting base, the driven component includes a transmission shaft rotatably connected to the mounting base, a driving gear arranged at one end of the transmission shaft, a first feeding wheel arranged at the other end of the transmission shaft, a driven gear meshing with the driving gear, and a second feeding wheel coaxially connected to the driven gear, the first feeding wheel and the second feeding wheel cooperate to convey the wire, the one-way clutch is connected to one of its transmission shafts, and the two driving gears are both meshed with the second transmission gear.

[0015] Furthermore, the first feeding wheel and the second feeding wheel are provided with circumferentially arranged annular grooves.

[0016] Furthermore, a feeding guide sleeve is provided on the mounting seat, and the feeding guide sleeve is located between the two driven components.

[0017] Furthermore, the driven assembly also includes a support rod fixedly mounted on the mounting seat, a mounting box rotatably connected to the support rod, and a cylinder disposed on the mounting seat, a rotating shaft rotatably connected inside the mounting box, a driven gear and a second feeding wheel are respectively disposed at two ends of the rotating shaft, and an extending rod of the cylinder is used to drive the mounting box to rotate around the support rod so as to separate the driving gear and the driven gear.

[0018] Furthermore, a spring abutting against the mounting seat is provided at the bottom of the mounting box, and the spring and the cylinder are both arranged close to the second feeding wheel.

[0019] Furthermore, a limiting hole located above the transmission shaft is opened on the mounting seat, and the mounting box is arranged in the limiting hole.

[0020] Beneficial effect: The wire feeding mechanism with adjustable conveying length provided by the utility model drives the rocker arm to swing back and forth through the first feeding connecting rod, the feeding swing arm and the second feeding connecting rod in sequence. A plurality of mounting holes are arranged on the feeding swing arm. The first feeding connecting rod is connected to different mounting holes to adjust the swing angle of the rocker arm accordingly, thereby realizing the adjustment of the wire conveying length. The adjustment has high precision and is convenient and quick, and can meet different processing requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model provides a structure of a wire feeding mechanism with adjustable conveying length Figure 1 .

[0022] Figure 2 An exploded view of a wire feeding mechanism with adjustable conveying length provided by the utility model.

[0023] Figure 3 The utility model provides a structure of a wire feeding mechanism with adjustable conveying length Figure 2 .

[0024] Figure 4 An exploded view of a driven component in a wire feeding mechanism with adjustable conveying length provided by the utility model.

[0025] Figure 5 This is a schematic diagram of a driven component in a wire feeding mechanism with adjustable conveying length provided by the utility model in a wire conveying state.

[0026] Figure 6 This is a schematic diagram of a driven component in a wire feeding mechanism with adjustable conveying length provided by the utility model in a wire cutting state.

[0027] Description of the main component symbols: bed 1, mounting seat 2, limiting hole 21, feeding mechanism 3, driven assembly 31, transmission shaft 311, driving gear 312, first feeding wheel 313, annular groove 3131, driven gear 314, second feeding wheel 315, support rod 316, mounting box 317, cylinder 318, rotating shaft 319, spring 320, second transmission gear 32, feeding guide sleeve 33, transmission mechanism 4, first transmission gear 41, feeding swing arm 42, mounting hole 421, long connecting part 422, avoidance groove 423, first Y-shaped connecting part 424, first feeding connecting rod 43, one-way clutch 44, rocker arm 45, second feeding connecting rod 46, second Y-shaped connecting part 461, connecting rod pin 47, slot 471, pressure plate 48. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-6 The utility model provides a wire feeding mechanism with adjustable conveying length, comprising a bed 1, a feeding mechanism 3 and a transmission mechanism 4; a mounting seat 2 is provided on the bed 1; the feeding mechanism 3 is arranged on the mounting seat 2 for conveying wire; the transmission mechanism 4 comprises a first transmission gear 41, a feeding swing arm 42 rotatably connected to the bed 1, a first feeding connecting rod 43 for connecting the first transmission gear 41 and the feeding swing arm 42, a one-way clutch 44 connected to the feeding mechanism 3, a rocker arm 45 connected to the one-way clutch 44, and a second feeding connecting rod 46 for connecting the rocker arm 45 and the feeding swing arm 42, one end of the feeding swing arm 42 is provided with a plurality of mounting holes 421 arranged along its length direction, and one end of the first feeding connecting rod 43 is rotatably connected to any mounting hole 421 to adjust the swing angle of the rocker arm 45.

[0030] In actual use, the power mechanism of the cold heading machine drives the first transmission gear 41 to rotate, and one end of the first feeding connecting rod 43 rotates around the center of the first transmission gear 41, so that the other end thereof pulls the feeding swing arm 42 back and forth. When the feeding swing arm 42 swings at a certain angle, it drives the rocker arm 45 to swing back and forth through the second feeding connecting rod 46. When the rocker arm 45 swings toward the starting end of the feed, the one-way clutch 44 drives the feeding mechanism 3 to transport the wire; when the rocker arm 45 swings in the wire conveying direction, the feeding mechanism 3 does not move.

[0031] In this embodiment, four mounting holes 421 are provided. The smaller the distance between the mounting hole 421 and the rotation center of the feeding swing arm 42, the greater the swing angle of the driving swing arm 45, that is, the longer the conveying length of the wire is. Therefore, multiple mounting holes 421 are provided to connect with the first feeding connecting rod 43, so that the corresponding conveying length can be quickly adjusted according to demand. When adjusting, it is only necessary to release the connection between the first feeding connecting rod 43 and the mounting hole 421, and then reconnect it with another mounting hole 421, which is convenient and quick to operate.

[0032] Preferably, the long connecting portion 422 is provided with a plurality of marks corresponding to the mounting holes 421 for easy adjustment.

[0033] In a preferred embodiment, see Figure 2, a long connection part 422 is provided at one end of the feeding swing arm 42, and a avoidance groove 423 is provided in the middle of the long connection part 422, and a plurality of mounting holes 421 are located on both sides of the long connection part 422 and are connected to the avoidance groove 423. By providing the avoidance groove 423, the cross section of the long connection part 422 is a "C"-shaped structure, which improves the structural strength of the feeding swing arm 42, and the first feeding connecting rod 43 is located in the avoidance groove 423 and connected to the mounting hole 421. A first Y-shaped connecting part 424 is provided at the other end of the feeding swing arm 42, and the first Y-shaped connecting part 424 is rotatably connected to one end of the second feeding connecting rod 46, so as to improve the connection stability between the feeding swing arm 42 and the second feeding connecting rod 46, and make the second feeding connecting rod 46 evenly stressed.

[0034] Furthermore, the other end of the second feeding link 46 is provided with a second Y-shaped connecting portion 461, and the second Y-shaped connecting portion 461 is rotatably connected to the end of the rocker arm 45. The second Y-shaped connecting portion 461 is provided with reinforcing ribs, which can improve the structural strength of the second feeding link 46 on the one hand, and improve the connection stability between the feeding swing arm 42 and the rocker arm 45 on the other hand, and make the rocker arm 45 evenly stressed.

[0035] For further information, see Figure 2 , the first feeding connecting rod 43 is connected to the mounting hole 421 through a connecting rod pin 47, a slot 471 is provided on the connecting rod pin 47, a pressing plate 48 is provided on the long connecting part 422 and is inserted into the slot 471, and the pressing plate 48 is fixed to the long connecting part 422 by screws. When connected with the mounting hole 421, after the connecting rod pin 47 is correspondingly inserted into the mounting hole 421 and the end of the first feeding connecting rod 43, the pressing plate 48 is inserted into the slot 471 to lock the position of the connecting rod pin 47, so as to complete the connection between the mounting hole 421 and the first feeding connecting rod 43.

[0036] In a preferred embodiment, see Figure 2 , 3 The feeding mechanism 3 includes two driven components 31 and a second transmission gear 32 rotatably connected to the mounting seat 2. The driven component 31 includes a transmission shaft 311 rotatably connected to the mounting seat 2, a driving gear 312 provided at one end of the transmission shaft 311, a first feeding wheel 313 provided at the other end of the transmission shaft 311, a driven gear 314 meshing with the driving gear 312, and a second feeding wheel 315 coaxially connected with the driven gear 314. The first feeding wheel 313 and the second feeding wheel 315 cooperate to convey the wire. The one-way clutch 44 is connected to one of the transmission shafts 311, and the two driving gears 312 are meshed with the second transmission gear 32. Among them, the one-way clutch 44 has the characteristics of one-way transmission. When the one-way clutch 44 rotates in the positive direction, it can drive the transmission shaft 311 to rotate; on the contrary, when the one-way clutch 44 rotates in the reverse direction, it is idle, and the transmission shaft 311 is in a stationary state.

[0037] In this embodiment, refer to Figure 2 , preferably, the one-way clutch 44 is installed and connected to the transmission shaft 311 arranged near the first transmission gear 41. During the wire conveying process, the transmission mechanism 4 drives the rocker arm 45 to swing to the left, the one-way clutch 44 rotates clockwise, and drives the corresponding transmission shaft 311 and the driving gear 312 to rotate clockwise, the driving gear 312 and the driven gear 314 are meshed, so that the first feeding wheel 313 and the second feeding wheel 315 cooperate to convey the wire to the right direction. Since the two driving gears 312 are meshed with the second transmission gear 32, the two driving gears 312 rotate synchronously, realizing the synchronous rotation of the two sets of first feeding wheels 313 and second feeding wheels 315.

[0038] Furthermore, the first feeding wheel 313 and the second feeding wheel 315 are provided with a circumferentially arranged annular groove 3131; two groups of the first feeding wheel 313 and the second feeding wheel 315 are provided to limit the conveying direction of the wire and cooperate in conveying the wire forward.

[0039] For further information, see Figure 3 The feeding guide sleeve 33 is on the mounting seat 2 and is located between the two driven components 31. Specifically, the feeding guide sleeve 33 is located in the tangent direction of the first feeding wheel 313 and the second feeding wheel 315. The wire is conveyed forward by a group of the first feeding wheel 313 and the second feeding wheel 315, passes through the feeding guide sleeve 33, and is then conveyed forward by another group of the first feeding wheel 313 and the second feeding wheel 315 to improve the stability of wire conveying.

[0040] When the wire conveying stops, the transmission mechanism 4 drives the rocker arm 45 to swing to the right, and the one-way clutch 44 rotates counterclockwise. At the same time, the cold heading machine cuts the wire. To ensure that the wire is accurately cut, the first feeding wheel 313 and the second feeding wheel 315 clamp the wire through the offset annular groove 3131 to lock the position of the wire.

[0041] Specifically, see Figure 4 The driven assembly 31 also includes a support rod 316 fixed on the mounting seat 2, a mounting box 317 rotatably connected to the support rod 316, and a cylinder 318 disposed on the mounting seat 2. A rotating shaft 319 is rotatably connected in the mounting box 317. The driven gear 314 and the second feeding wheel 315 are respectively disposed at the two ends of the rotating shaft 319. The extended rod of the cylinder 318 is used to drive the mounting box 317 to rotate around the support rod 316 so as to separate the driving gear 312 and the driven gear 314. The support rod 316 and the mounting box 317 form a lever structure, such as Figure 6As shown, the extension rod of the cylinder 318 extends to drive the mounting box 317 to rotate around the support rod 316, and the driven gear 314 swings upward and separates from the driving gear 312. At the same time, the second feeding wheel 315 swings downward, so that the annular groove 3131 of the second feeding wheel 315 is misaligned with the annular groove 3131 of the first feeding wheel 313, so as to achieve the clamping of the wire. Figure 5 As shown, the extension rod of the cylinder 318 retracts to drive the mounting box 317 to rotate in the opposite direction around the support rod 316, the mounting box 317 is reset, the driven gear 314 is meshed with the driving gear 312, and the first feeding wheel 313 and the second feeding wheel 315 continue to transport the wire forward.

[0042] Furthermore, a spring 320 is provided at the bottom of the installation box 317 to abut against the installation seat 2. When the extension rod of the cylinder 318 extends to drive the installation box 317 to rotate, the spring 320 is compressed; and when the extension rod of the cylinder 318 retracts to drive the installation box 317 to reset, the spring 320 is extended due to the rebound force to assist the installation box 317 to quickly reset. Specifically, the spring 320 and the cylinder 318 are both arranged close to the second feeding wheel 315. According to the lever principle, the cylinder 318 applies a small downward pressure to drive the installation box 317 to rotate.

[0043] For further information, see Figure 4 The mounting seat 2 is provided with a limiting hole 21 located above the transmission shaft 311, and the mounting box 317 is arranged in the limiting hole 21. The limiting hole 21 is provided to limit the rotation of the mounting box 317 in the vertical direction to ensure the stability of the rotation of the mounting box 317.

[0044] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and the utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the utility model.

Claims

1. A wire feeding mechanism with adjustable conveying length, characterized in that: include: A bed body, wherein a mounting seat is provided on the bed body; A feeding mechanism, arranged on the mounting seat, for conveying wire; The transmission mechanism includes a first transmission gear, a feeding swing arm rotatably connected to the bed, a first feeding connecting rod used to connect the first transmission gear and the feeding swing arm, a one-way clutch connected to the feeding mechanism, a rocker arm connected to the one-way clutch, and a second feeding connecting rod used to connect the rocker arm and the feeding swing arm. One end of the feeding swing arm is provided with a plurality of mounting holes arranged along its length direction. One end of the first feeding connecting rod is rotatably connected to any mounting hole to adjust the swing angle of the rocker arm.

2. The wire feeding mechanism with adjustable conveying length according to claim 1, characterized in that: A long connecting portion is provided at one end of the feeding swing arm, a avoidance groove is opened in the middle of the long connecting portion, and a plurality of mounting holes are located on both sides of the long connecting portion and are connected to the avoidance groove; a first Y-shaped connecting portion is provided at the other end of the feeding swing arm, and the first Y-shaped connecting portion is rotatably connected to one end of the second feeding connecting rod.

3. The wire feeding mechanism with adjustable conveying length according to claim 1, characterized in that: The other end of the second feeding connecting rod is provided with a second Y-shaped connecting portion, and the second Y-shaped connecting portion is rotatably connected to the end of the rocker arm.

4. The wire feeding mechanism with adjustable conveying length according to claim 1, characterized in that: The first feeding connecting rod is connected to the mounting hole through a connecting rod pin, a slot is provided on the connecting rod pin, and a pressing plate which is inserted into the slot is provided on the long connecting part.

5. The wire feeding mechanism with adjustable conveying length according to claim 1, characterized in that: The feeding mechanism includes two driven components and a second transmission gear rotatably connected to the mounting base, the driven component includes a transmission shaft rotatably connected to the mounting base, a driving gear arranged at one end of the transmission shaft, a first feeding wheel arranged at the other end of the transmission shaft, a driven gear meshing with the driving gear and a second feeding wheel coaxially connected to the driven gear, the first feeding wheel and the second feeding wheel cooperate to convey the wire, the one-way clutch is connected to one of its transmission shafts, and the two driving gears are both meshed with the second transmission gear.

6. The wire feeding mechanism with adjustable conveying length according to claim 5, characterized in that: The first feeding wheel and the second feeding wheel are provided with circumferentially arranged annular grooves.

7. The wire feeding mechanism with adjustable conveying length according to claim 5, characterized in that: The mounting seat is provided with a feeding guide sleeve, which is located between the two driven components.

8. The wire feeding mechanism with adjustable conveying length according to claim 5, characterized in that: The driven assembly also includes a support rod fixed on the mounting seat, a mounting box rotatably connected to the support rod, and a cylinder arranged on the mounting seat, a rotating shaft rotatably connected in the mounting box, a driven gear and a second feeding wheel are respectively arranged at the two ends of the rotating shaft, and the extended rod of the cylinder is used to drive the mounting box to rotate around the support rod to separate the driving gear and the driven gear.

9. The wire feeding mechanism with adjustable conveying length according to claim 8, characterized in that: A spring abutting against the mounting seat is provided at the bottom of the mounting box, and the spring and the cylinder are both arranged close to the second feeding wheel.

10. The wire feeding mechanism with adjustable conveying length according to claim 8, characterized in that: The mounting seat is provided with a limiting hole located above the transmission shaft, and the mounting box is arranged in the limiting hole.

Images