Upper and lower cutter mechanism of spring machine

Abstract

The utility model discloses an upper and lower cutter mechanism of a spring machine, and relates to the technical field of spring machines, the scheme comprises an upper cutter mechanism, the upper cutter mechanism comprises a first driving mechanism, a first output shaft, a first eccentric wheel, a first fixed seat, a first sliding block and a first cutter, the first driving mechanism drives the first output shaft to rotate, and the first output shaft drives the first eccentric wheel to rotate; the first eccentric wheel is hinged to the end face of the first output shaft, the center axis of the first eccentric wheel and the center axis of the first output shaft are not collinear, the first sliding block is arranged on the first fixing base in a sliding mode, a first transverse groove is formed in the upper portion of the first sliding block, and the first eccentric wheel is arranged in the first transverse groove in a sliding mode; according to the utility model, the first driving mechanism can cut off the spring only by rotating in one direction, so that the service life of the spring is prolonged to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of spring machine technology, and in particular to an upper and lower cutting mechanism for a spring machine. Background Technology

[0002] In spring production, spring machines typically use a cutting mechanism to cut the finished spring from the wire. Chinese utility model CN201519724U discloses a cutting mechanism for a spring machine. This design uses a motor to drive a lead screw, which, when rotating, moves a tightening nut. The tightening nut then moves the cutter holder and cutter bar, cutting the spring through the cutter bar. The drawback of this design is that, due to the lead screw and nut structure, the up-and-down movement of the cutter bar requires the motor to change its rotation direction, which is equivalent to frequent motor start-stop, affecting its service life. Against this backdrop, the applicant has designed an upper and lower cutting mechanism for a spring machine, allowing the first drive mechanism to cut the spring by rotating in only one direction, thus extending its service life to some extent. Utility Model Content

[0003] The purpose of this invention is to enable the first drive mechanism to cut off the spring by rotating in only one direction, thereby extending its service life to a certain extent.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A spring machine has an upper and lower cutting mechanism, including an upper cutting mechanism. The upper cutting mechanism includes a first driving mechanism, a first output shaft, a first eccentric wheel, a first fixed seat, a first slider, and a first cutter. The first driving mechanism drives the first output shaft to rotate. The first eccentric wheel is hinged to the end face of the first output shaft, and the central axis of the first eccentric wheel is not collinear with the central axis of the first output shaft. The first slider is slidably mounted on the first fixed seat. A first transverse groove is provided on the upper part of the first slider, and the first eccentric wheel is slidably mounted in the first transverse groove.

[0006] Furthermore, the upper cutting mechanism also includes a first bushing, which is fixedly disposed on the end face of the first output shaft. The first eccentric wheel is hinged to the end face of the first bushing, and the central axis of the first eccentric wheel is not collinear with the central axis of the first bushing.

[0007] Furthermore, the outer wheel surface of the first eccentric wheel is provided with two sets of opposing first inclined surfaces, which are respectively slidably disposed on the top and bottom surfaces of the first transverse groove.

[0008] Furthermore, it also includes a lower cutting mechanism, which includes a second drive mechanism, a second output shaft, a second eccentric wheel, a second fixed seat, a second slider, and a second cutting blade. The second drive mechanism drives the second output shaft to rotate. The second eccentric wheel is hinged to the end face of the second output shaft, and the central axis of the second eccentric wheel is not collinear with the central axis of the second output shaft. The second slider is slidably mounted on the second fixed seat. A second transverse groove is provided on the upper part of the second slider, and the second eccentric wheel is slidably mounted in the second transverse groove.

[0009] Furthermore, the lower cutting mechanism also includes a second bushing, which is fixedly disposed on the end face of the second output shaft. The second eccentric wheel is hinged to the end face of the second bushing, and the central axis of the second eccentric wheel is not collinear with the central axis of the second bushing.

[0010] Furthermore, the outer wheel surface of the second eccentric wheel is provided with two sets of opposing second inclined surfaces, which are respectively slidably disposed on the top and bottom surfaces of the second transverse groove.

[0011] Furthermore, the first cutter and the second cutter are arranged symmetrically to each other.

[0012] Furthermore, it also includes a frame and a pusher auxiliary mandrel mechanism. The pusher auxiliary mandrel mechanism includes a first side cam, a second side cam, a first swing arm, and a push rod. The first side cam and the second side cam are both fixedly mounted on the first output shaft. One end of the push rod is hinged to the upper end of the first swing arm. The middle part of the first swing arm is hinged to the frame, and the upper part of the first swing arm cooperates with the first side cam and the second side cam.

[0013] Furthermore, the push-assisted mandrel mechanism also includes a third side cam, a fourth side cam, and a second swing arm. The third side cam and the fourth side cam are both fixedly mounted on the second output shaft. The middle part of the second swing arm is hinged to the frame. The upper end of the second swing arm is hinged to the lower end of the first swing arm. The lower part of the second swing arm cooperates with the third side cam and the fourth side cam.

[0014] Furthermore, the push-assisted mandrel mechanism also includes a connector, the upper end of the second swing arm is fixedly mounted on the connector, and the lower end of the first swing arm is hinged to the connector.

[0015] The beneficial effects of this utility model are as follows: when the cutting spring of this utility model is needed, the first output shaft is driven to rotate by the first drive mechanism. When the first output shaft rotates, it drives the first eccentric wheel to make a circular motion. When the first eccentric wheel makes a circular motion, it moves laterally in the first transverse groove. At the same time, the first eccentric wheel pushes the first slider to move vertically. The first slider drives the first cutter to move up and down.

[0016] When the first eccentric wheel is at its highest point, the first cutter is also at its highest point. When the first eccentric wheel is at its lowest point, the first cutter is also at its lowest point. When the first output shaft drives the first eccentric wheel to rotate one revolution, the first cutter also completes a downward cutting action. This allows the first drive mechanism to rotate in only one direction to drive the first eccentric wheel to rotate in a circle, thereby driving the first cutter to cut the spring. Compared with traditional technology, the drive mechanism does not need to frequently change the direction of rotation, thus extending its service life to a certain extent. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partial structural schematic diagram of the upper cutting mechanism and the auxiliary mandrel pushing mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the lower cutting mechanism and the pusher mandrel mechanism of this utility model;

[0020] The attached figures are labeled as follows:

[0021] Upper cutting mechanism 1, first drive mechanism 11, first output shaft 12, first bushing 13, first eccentric wheel 14, first fixed seat 15, first slider 16, first transverse groove 161, first cutter 17.

[0022] Lower cutting mechanism 2, second drive mechanism 21, second output shaft 22, second bushing 23, second eccentric wheel 24, second fixed seat 25, second slider 26, second transverse groove 261, second cutter 27.

[0023] The frame 3, the auxiliary mandrel pushing mechanism 4, the first side cam 41, the second side cam 42, the third side cam 43, the fourth side cam 44, the first swing arm 45, the second swing arm 46, the connecting piece 47, and the push rod 48. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] like Figures 1 to 3 The spring machine shown has an upper and lower cutting mechanism, including an upper cutting mechanism 1, a lower cutting mechanism 2, a frame 3, and an auxiliary mandrel pushing mechanism 4.

[0026] The upper cutting mechanism 1 includes a first driving mechanism 11, a first output shaft 12, a first bushing 13, a first eccentric wheel 14, a first fixed seat 15, a first slider 16, and a first cutter 17. The first driving mechanism 11 drives the first output shaft 12 to rotate. The first eccentric wheel 14 is hinged to the end face of the first output shaft 12, and the central axis of the first eccentric wheel 14 is not collinear with the central axis of the first output shaft 12. Specifically, the first bushing 13 is fixedly set on the end face of the first output shaft 12, and the first eccentric wheel 14 is hinged to the end face of the first bushing 13, and the central axis of the first eccentric wheel 14 is not collinear with the central axis of the first bushing 13. That is to say, when the first output shaft 12 rotates, it drives the first eccentric wheel 14 to rotate eccentrically, that is, to perform circular motion.

[0027] The first slider 16 is slidably mounted on the first fixed seat 15. The upper part of the first slider 16 is provided with a first transverse groove 161. The first eccentric wheel 14 is slidably mounted in the first transverse groove 161. The specific structure is as follows: the outer wheel surface of the first eccentric wheel 14 is provided with two sets of opposing first inclined surfaces. The two sets of first inclined surfaces are respectively slidably mounted on the top and bottom surfaces in the first transverse groove 161.

[0028] The first drive mechanism 11 drives the first output shaft 12 to rotate. When the first output shaft 12 rotates, it drives the first eccentric wheel 14 to make a circular motion. When the first eccentric wheel 14 makes a circular motion, it moves laterally in the first transverse groove 161. At the same time, the first eccentric wheel 14 pushes the first slider 16 to move vertically along the first fixed seat 15. The first slider 16 drives the first cutter 17 to move up and down to cut the spring.

[0029] The lower cutting mechanism 2 includes a second drive mechanism 21, a second output shaft 22, a second bushing 23, a second eccentric wheel 24, a second fixed base 25, a second slider 26, and a second cutting blade 27.

[0030] The second drive mechanism 21 drives the second output shaft 22 to rotate. The second eccentric wheel 24 is hinged to the end face of the second output shaft 22, and the central axis of the second eccentric wheel 24 is not collinear with the central axis of the second output shaft 22. Specifically, the second bushing 23 is fixedly set on the end face of the second output shaft 22, and the second eccentric wheel 24 is hinged to the end face of the second bushing 23. The central axis of the second eccentric wheel 24 is not collinear with the central axis of the second bushing 23. That is to say, when the second output shaft 22 rotates, it drives the second eccentric wheel 24 to rotate eccentrically, that is, to perform circular motion.

[0031] The second slider 26 is slidably mounted on the second fixed seat 25. The upper part of the second slider 26 is provided with a second transverse groove 261. The second eccentric wheel 24 is slidably mounted in the second transverse groove 261. The specific structure is as follows: the outer wheel surface of the second eccentric wheel 24 is provided with two sets of opposing second inclined surfaces. The two sets of second inclined surfaces are respectively slidably mounted on the top and bottom surfaces in the second transverse groove 261.

[0032] The second drive mechanism 21 drives the second output shaft 22 to rotate. When the second output shaft 22 rotates, it drives the second eccentric wheel 24 to make a circular motion. When the second eccentric wheel 24 makes a circular motion, it moves laterally in the second transverse groove 261. At the same time, the second eccentric wheel 24 pushes the second slider 26 to move vertically along the second fixed seat 25. The second slider 26 drives the second cutter 27 to move up and down to cut the spring.

[0033] In this embodiment, the first cutter 17 and the second cutter 27 are symmetrically arranged. In practical applications, either the upper cutter mechanism 1 or the lower cutter mechanism 2 can be selected to cut the spring according to actual needs.

[0034] The pusher mechanism 4 includes a first side cam 41, a second side cam 42, a first swing arm 45, a third side cam 43, a fourth side cam 44, a second swing arm 46, a connector 47, and a push rod 48. The first side cam 41 and the second side cam 42 are both fixedly mounted on the first output shaft 12. One end of the push rod 48 is hinged to the upper end of the first swing arm 45. The middle part of the first swing arm 45 is hinged to the frame 3, and the upper part of the first swing arm 45 cooperates with the first side cam 41 and the second side cam 42.

[0035] When the first output shaft 12 rotates, it simultaneously drives the first side cam 41 and the second side cam 42 to rotate. Since the first swing arm 45 is located between the first side cam 41 and the second side cam 42, when the first side cam 41 and the second side cam 42 rotate, they cooperate to move the upper part of the first swing arm 45 left and right, thereby driving the push rod 48 forward or backward, and thus pushing the auxiliary core rod.

[0036] The third side cam 43 and the fourth side cam 44 are both fixedly mounted on the second output shaft 22. The middle part of the second swing arm 46 is hinged to the frame 3. The upper end of the second swing arm 46 is hinged to the lower end of the first swing arm 45. In this embodiment, the specific structure is as follows: the upper end of the second swing arm 46 is fixedly mounted on the connector 47, and the lower end of the first swing arm 45 is hinged to the connector 47.

[0037] The lower part of the second swing arm 46 cooperates with the third side cam 43 and the fourth side cam 44. When the second output shaft 22 rotates, it simultaneously drives the third side cam 43 and the fourth side cam 44 to rotate. Since the lower part of the second swing arm 46 is located between the third side cam 43 and the fourth side cam 44, when the third side cam 43 and the fourth side cam 44 rotate, they cooperate to move the lower part of the second swing arm 46 left and right. The upper part of the second swing arm 46 drives the connecting piece 47 to swing left and right. The connecting piece 47 drives the lower part of the first swing arm 45 to swing left and right. The upper part of the first swing arm 45 drives the push rod 48 to move forward or backward, thereby pushing the auxiliary core rod.

[0038] The working principle of this utility model is as follows: In practical applications, one of the upper cutting mechanism 1 or the lower cutting mechanism 2 can be selected to cut the spring according to actual needs.

[0039] When the upper cutting mechanism 1 is selected to cut the spring, the first drive mechanism 11 drives the first output shaft 12 to rotate. When the first output shaft 12 rotates, it drives the first eccentric wheel 14 to make a circular motion. When the first eccentric wheel 14 makes a circular motion, it moves laterally in the first transverse groove 161. At the same time, the first eccentric wheel 14 pushes the first slider 16 to move vertically along the first fixed seat 15. The first slider 16 drives the first cutter 17 to move up and down to cut the spring.

[0040] When the first output shaft 12 rotates, it simultaneously drives the first side cam 41 and the second side cam 42 to rotate. Since the first swing arm 45 is located between the first side cam 41 and the second side cam 42, when the first side cam 41 and the second side cam 42 rotate, they cooperate to move the upper part of the first swing arm 45 left and right, thereby driving the push rod 48 forward or backward, and thus pushing the auxiliary core rod.

[0041] When the lower cutting mechanism 2 is selected to cut the spring, the second drive mechanism 21 drives the second output shaft 22 to rotate. When the second output shaft 22 rotates, it drives the second eccentric wheel 24 to make a circular motion. When the second eccentric wheel 24 makes a circular motion, it moves laterally in the second transverse groove 261. At the same time, the second eccentric wheel 24 pushes the second slider 26 to move vertically along the second fixed seat 25. The second slider 26 drives the second cutter 27 to move up and down to cut the spring.

[0042] When the second output shaft 22 rotates, it simultaneously drives the third side cam 43 and the fourth side cam 44 to rotate. Since the lower part of the second swing arm 46 is located between the third side cam 43 and the fourth side cam 44, when the third side cam 43 and the fourth side cam 44 rotate, they cooperate to move the lower part of the second swing arm 46 left and right. The upper part of the second swing arm 46 drives the connecting piece 47 to swing left and right. The connecting piece 47 drives the lower part of the first swing arm 45 to swing left and right. The upper part of the first swing arm 45 drives the push rod 48 to move forward or backward, thereby pushing the auxiliary core rod.

[0043] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of protection of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the patent application of the present utility model shall still fall within the scope of the present utility model. The above does not constitute any limitation on the technical scope of the present utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. An upper and lower cutting mechanism for a spring machine, characterized in that: The device includes an upper cutting mechanism, which comprises a first driving mechanism, a first output shaft, a first eccentric wheel, a first fixed seat, a first slider, and a first cutting blade. The first driving mechanism drives the first output shaft to rotate. The first eccentric wheel is hinged to the end face of the first output shaft, and the central axis of the first eccentric wheel is not collinear with the central axis of the first output shaft. The first slider is slidably mounted on the first fixed seat, and a first transverse groove is provided on the upper part of the first slider. The first eccentric wheel is slidably mounted in the first transverse groove.

2. The upper and lower cutting mechanism of a spring machine according to claim 1, characterized in that: The upper cutting mechanism also includes a first bushing, which is fixedly mounted on the end face of the first output shaft. The first eccentric wheel is hinged to the end face of the first bushing, and the central axis of the first eccentric wheel is not collinear with the central axis of the first bushing.

3. The upper and lower cutting mechanism of a spring machine according to claim 1, characterized in that: The outer wheel surface of the first eccentric wheel is provided with two sets of opposing first inclined surfaces, which are respectively slidably disposed on the top and bottom surfaces of the first transverse groove.

4. The upper and lower cutting mechanism of a spring machine according to any one of claims 1-3, characterized in that: It also includes a lower cutting mechanism, which includes a second drive mechanism, a second output shaft, a second eccentric wheel, a second fixed seat, a second slider, and a second cutting blade. The second drive mechanism drives the second output shaft to rotate. The second eccentric wheel is hinged to the end face of the second output shaft, and the central axis of the second eccentric wheel is not collinear with the central axis of the second output shaft. The second slider is slidably mounted on the second fixed seat. A second transverse groove is provided on the upper part of the second slider, and the second eccentric wheel is slidably mounted in the second transverse groove.

5. The upper and lower cutting mechanism of a spring machine according to claim 4, characterized in that: The lower cutting mechanism also includes a second bushing, which is fixedly mounted on the end face of the second output shaft. The second eccentric wheel is hinged to the end face of the second bushing, and the central axis of the second eccentric wheel is not collinear with the central axis of the second bushing.

6. The upper and lower cutting mechanism of a spring machine according to claim 4, characterized in that: The outer wheel surface of the second eccentric wheel is provided with two sets of opposing second inclined surfaces, which are respectively slidably disposed on the top and bottom surfaces of the second transverse groove.

7. The upper and lower cutting mechanism of a spring machine according to claim 4, characterized in that: The first cutter and the second cutter are arranged symmetrically to each other.

8. The upper and lower cutting mechanism of a spring machine according to claim 4, characterized in that: It also includes a frame and a pusher auxiliary mandrel mechanism. The pusher auxiliary mandrel mechanism includes a first side cam, a second side cam, a first swing arm, and a push rod. The first side cam and the second side cam are both fixedly mounted on the first output shaft. One end of the push rod is hinged to the upper end of the first swing arm. The middle part of the first swing arm is hinged to the frame, and the upper part of the first swing arm cooperates with the first side cam and the second side cam.

9. The upper and lower cutting mechanism of a spring machine according to claim 8, characterized in that: The push-assist mandrel mechanism also includes a third side cam, a fourth side cam, and a second swing arm. The third side cam and the fourth side cam are both fixedly mounted on the second output shaft. The middle part of the second swing arm is hinged to the frame. The upper end of the second swing arm is hinged to the lower end of the first swing arm. The lower part of the second swing arm cooperates with the third side cam and the fourth side cam.

10. The upper and lower cutting mechanism of a spring machine according to claim 9, characterized in that: The push-assisted mandrel mechanism also includes a connector, the upper end of the second swing arm is fixedly mounted on the connector, and the lower end of the first swing arm is hinged to the connector.

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