Pull ring forming mechanism of tension spring and tension spring machine

Abstract

The utility model provides a pull ring forming mechanism of a tension spring and a tension spring machine. The pull ring forming mechanism comprises a mandrel, a plurality of radial rods arranged around the mandrel and an air cylinder for controlling the radial rods. Wherein the radial rod comprises an outer shell, a push broach, a fixing seat and an adjusting seat, the push broach is assembled on the fixing seat, the fixing seat and the adjusting seat are mechanically connected and then integrally assembled in the outer shell, and the outer shell is fixed to the output end of the air cylinder so as to push the push broach to move and make contact with a wire; each radial rod is provided with the structure, when the push broach repeatedly acts on a wire rod, the push broach on the radial rod moves backwards due to acting force, the position of the push broach is finely adjusted through the adjusting base, the push broach is made to be in the original position, and therefore the situation that deviation occurs when the radial rods act on the wire rod, and the forming quality of a pull ring is affected is avoided; and finally, the tension spring processing quality of the tension spring machine is influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pull ring forming mechanism of tension spring and tension spring machine and belong to tension spring processing field. BACKGROUND

[0002] The tension spring is a helical spring for bearing axial tension, is widely used in medical breathing equipment, mechanical equipment, aviation equipment and other fields, and has various forms of end pull rings, and is mostly used for ensuring the tension source of the tension spring.

[0003] The tension spring machine is also a compression spring machine, can adopt programs to control feeding, compression forming and blanking, realizes the automation of production compression spring, and the number of the radial rods of the compression spring structure is large, and the radial rods are arranged around the mandrel, the radial rods of the compression spring structure are controlled to act on the wire material fed by the feeding structure, the wire material is subjected to force to be turned over, after forming, the radial rods are controlled to act on the wire material by the cutter, the wire material has different hardness, and the cutter on the radial rod is repeatedly subjected to the wire material, the cutter on the radial rod is moved backward due to the force, cannot be finely adjusted, the radial rod is subjected to the wire material after deviation, and deviation also occurs, the quality of the pull ring forming is affected, and finally the tension spring processing quality of the tension spring machine is affected.

[0004] For example, the existing application No. 201821563344.3 and the patent application name for a pull ring forming mechanism of tension spring and a tension spring machine disclose that the pull ring forming mechanism comprises a wall plate, the wall plate is provided with a spring discharge port, the pull ring forming mechanism further comprises a sliding rail fixed on the wall plate, a push knife is slidably arranged on the sliding rail, the blade of the push knife is close to the spring discharge port, the tail of the push knife is hinged to the inner end of a lever, the middle part of the lever is rotatably arranged on the wall plate, a reset mechanism capable of driving the inner end of the lever to move away from the spring discharge port is arranged between the lever and the wall plate, a threaded hole is formed in the side wall of the outer end of the lever, a moving seat is threadedly connected in the threaded hole, a motor is fixed on the wall plate, the output end of the motor is connected with an eccentric wheel abutting against the moving seat. The utility model can improve the pull ring forming quality of the tension spring.

[0005] However, the above-mentioned device cannot adjust each radial rod, and it can only adjust the cutter of one radial rod.

[0006] Therefore, the utility model provides a pull ring forming mechanism of tension spring and a tension spring machine with radial rod fine adjustment function. UTILITY MODEL CONTENTS

[0007] Therefore, the utility model provides a pull ring forming mechanism of tension spring and a tension spring machine with radial rod fine adjustment function.

[0008] The utility model is realized as follows:

[0009] A pull ring forming mechanism of a tension spring comprises a mandrel, a plurality of radial rods arranged around the mandrel, and a cylinder for controlling the radial rods;

[0010] The radial rod comprises an outer shell, a pusher, a fixing seat and an adjusting seat, the pusher is assembled on the fixing seat, the fixing seat and the adjusting seat are mechanically connected and assembled in the outer shell as a whole, and the outer shell is fixed with the output end of the cylinder to push the pusher to move and contact the wire.

[0011] As a further improvement, the adjusting seat comprises a support fixed on the outer shell;

[0012] An adjusting knob and an eccentric wheel, the support is provided with the eccentric wheel near the first end of the fixing seat, and the adjusting knob for controlling the counterclockwise or clockwise rotation of the eccentric wheel is arranged on the top surface of the eccentric wheel;

[0013] A strip groove, the number of which is two, is arranged on the support on the two sides of the eccentric wheel, and the strip groove is matched with the fixing seat.

[0014] As a further improvement, the fixing seat comprises a main body, a mounting hole and a matching groove arranged at the front and rear ends of the main body, the pusher is assembled in the mounting hole, and the matching groove is matched with the eccentric wheel;

[0015] A sliding strip, the number of which is two, is fixed on the bottom surface of the main body, and the sliding strip is slidably matched with the strip groove.

[0016] As a further improvement, an indicating scale is engraved on the top surface of the adjusting knob.

[0017] As a further improvement, a limiting strip is fixed on the two sides of the main body and matched with the inner part of the outer shell.

[0018] As a further improvement, the matching groove extends to the top surface of the main body.

[0019] As a further improvement, a resilient component is arranged between the inner wall of the first end of the strip groove and the sliding strip.

[0020] As a further improvement, the length of the strip groove is greater than that of the sliding strip.

[0021] A tension spring machine comprises the pull ring forming mechanism of the tension spring.

[0022] The beneficial effects of the present application are as follows: each radial rod has the above structure, the pusher repeatedly acts on the wire, the pusher on the radial rod moves backward due to the force, the position of the pusher is finely adjusted by the adjusting seat, the pusher is in the original position, the deviation of the radial rod acting on the wire is avoided, the quality of the pull ring forming is affected, and finally the processing quality of the tension spring machine is affected. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can be obtained without creative labor on the basis of the drawings.

[0024] Figure 1 is a plan view of a tension spring machine provided by the embodiments of the present application.

[0025] Figure 2 is a plan view of a pull ring forming mechanism of a tension spring provided by the embodiments of the present application.

[0026] Figure 3 is a structural view of an adjusting seat and a fixing seat of a pull ring forming mechanism of a tension spring provided by the embodiments of the present application.

[0027] Figure 4 is a structural view of a fixing seat of a pull ring forming mechanism of a tension spring provided by the embodiments of the present application.

[0028] Figure 5 is a structural view of an adjusting seat of a pull ring forming mechanism of a tension spring provided by the embodiments of the present application. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only to represent selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] In the description of the utility model, the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0031] Referring to Figures 1-5 The embodiment provides a pull ring forming mechanism of a tension spring, which comprises a mandrel 10, a plurality of radial rods 20 arranged around the mandrel 10, and a cylinder for controlling the movement of the radial rods 20.

[0032] The radial rod 20 comprises an outer shell 201, a push knife 202, a fixing seat 203 and an adjusting seat 204, the push knife 202 is assembled on the fixing seat 203, the fixing seat 203 and the adjusting seat 204 are mechanically connected and are integrally assembled in the outer shell 201, and the outer shell 201 is fixed with the output end of the cylinder to push the push knife 202 to move and contact the wire.

[0033] Each radial rod 20 of the utility model has the above structure, the push knife 202 on the radial rod is moved backward due to the acting force after the push knife 202 repeatedly acts on the wire for multiple times, the position of the push knife 202 is finely adjusted by using the adjusting seat 204, so that the push knife 202 is in the original position, thereby avoiding deviation of the radial rod acting on the wire, affecting the quality of the pull ring forming, and finally affecting the processing quality of the tension spring machine.

[0034] Specifically,

[0035] The adjusting seat 204 comprises a support 241 fixed on the outer shell 201.

[0036] The adjusting seat 204 comprises a support 241 fixed on the outer shell 201.

[0037] The adjusting seat 204 comprises a support 241 fixed on the outer shell 201.

[0038] The fixing seat 203 comprises a main body 231, a mounting hole 232 and a matching groove 233 opened at the front and rear ends of the main body 231, the push knife 202 is assembled in the mounting hole 232, that is, the push knife 202 is placed in the mounting hole 232 and is fixed by penetrating from top to bottom through screws, and the matching groove 233 is matched with the eccentric wheel 243.

[0039] Sliding bars 234, the number of 2, fixed in the bottom end surface of the main body 231, and the sliding bar 234 and bar groove 244 sliding fit.

[0040] Further, the main body 231 both sides are fixed limit strip 235, the limit strip 235 with the inside of the shell 201 cooperation.

[0041] That is, by adjusting the knob 242 counterclockwise or clockwise rotation eccentric wheel 243, the main body 231 to move forward, the main body 231 on the push knife 202 is also pushed to restore the original position, sliding bar 234 and bar groove 244 sliding, one is to limit the direction of movement, two is connected with the fixed seat 203 and adjusting seat 204, plus the shell 201 on the fixed seat 203 and adjusting seat 204 of the package limit, play a fixed role.

[0042] As a possible embodiment of the utility model, the top surface of the adjusting knob 242 is engraved with an indication scale, and the support 241 is engraved with an indication needle, so that the rotation angle can be seen with the naked eye, and it is easy to judge.

[0043] As a possible embodiment of the fixed seat 203, the matching groove 233 extends to the top end surface of the main body 231, so that the matching groove 233 and the eccentric wheel 243 are exposed and can be seen with the naked eye, and the contact is not good, so it is not necessary to worry about the problem of not being able to contact.

[0044] As a possible embodiment, it also contains elastic component 245, the first end inner wall of the bar groove 244 and the sliding bar 234 are installed with elastic component 245, which ensures that the matching groove 233 on the fixed seat 203 and the eccentric wheel 243 are in full contact.

[0045] As a possible embodiment, the length of the bar groove 244 is greater than the length of the sliding bar 234, so that the sliding bar 234 has a moving space for adjustment.

[0046] A tension spring machine comprises a tension spring ring forming mechanism.

[0047] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model. For those skilled in the art, the utility model can be changed and varied in various ways. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pull ring forming mechanism of a tension spring, characterized by comprising: The device comprises a mandrel (10), a plurality of radial rods (20) arranged around the mandrel (10), and a cylinder for controlling the radial rods (20). The radial rod (20) comprises an outer shell (201), a pusher (202), a fixed seat (203), and an adjusting seat (204). The pusher (202) is assembled on the fixed seat (203), and the fixed seat (203) and the adjusting seat (204) are mechanically connected and assembled in the outer shell (201) as a whole. The outer shell (201) is fixed with the output end of the cylinder to push the pusher (202) to move and contact the wire.

2. The pull ring forming mechanism for a pull spring according to claim 1, wherein The adjusting seat (204) comprises a support (241) fixed on the outer shell (201). An adjusting knob (242) and an eccentric wheel (243) are installed on the support (241) near the first end of the fixed seat (203). The eccentric wheel (243) is provided with the adjusting knob (242) on the top surface to control the rotation of the eccentric wheel (243) in the counterclockwise or clockwise direction. Two strip grooves (244) are opened on the support (241) on both sides of the eccentric wheel (243), and the strip grooves (244) are matched with the fixed seat (203).

3. The pull ring forming mechanism for a pull spring according to claim 1, wherein The fixed seat (203) comprises a main body (231), an installation port (232) and a matching groove (233) opened at the front and rear ends of the main body (231). The pusher (202) is assembled in the installation port (232), and the matching groove (233) is matched with the eccentric wheel (243). Two slide strips (234) are fixed on the bottom end surface of the main body (231), and the slide strips (234) are slidably matched with the strip grooves (244).

4. The pull ring forming mechanism for a pull spring according to claim 2, wherein An indicating scale is engraved on the top end surface of the adjusting knob (242).

5. The pull ring forming mechanism for a pull spring according to claim 3, wherein Limiting strips (235) are fixed on both sides of the main body (231), and the limiting strips (235) are matched with the inside of the outer shell (201).

6. The pull ring forming mechanism for a pull spring according to claim 3, wherein The matching groove (233) extends to the top end surface of the main body (231).

7. The pull ring forming mechanism for a pull spring according to claim 3, wherein An elastic component (245) is installed between the inner wall of the first end of the strip groove (244) and the slide strip (234).

8. The pull ring forming mechanism for a pull spring according to claim 3, wherein The length of the strip groove (244) is greater than the length of the slide strip (234).

9. A tension spring machine characterized by, The device comprises a mandrel (10), a plurality of radial rods (20) arranged around the mandrel (10), and a cylinder for controlling the radial rods (20). The radial rod (20) comprises an outer shell (201), a pusher (202), a fixed seat (203), and an adjusting seat (204). The pusher (202) is assembled on the fixed seat (203), and the fixed seat (203) and the adjusting seat (204) are mechanically connected and assembled in the outer shell (201) as a whole. The outer shell (201) is fixed with the output end of the cylinder to push the pusher (202) to move and contact the wire.

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