Winding tool with replaceable core rod for spring machine

Abstract

The utility model relates to a winding tool with a replaceable core rod for a spring machine, which comprises a sleeve and the core rod and is technically characterized in that two concentric outer supporting sleeves are axially arranged on the periphery of the sleeve at intervals, a plurality of supporting columns are arranged between the concentric outer supporting sleeves and the sleeve, and a plurality of radial springs are uniformly fixed on the inner circumferential surfaces of the concentric outer supporting sleeves. A T-shaped positioning pin is fixed to the free end of the radial spring, a guide column inserted into the radial spring is arranged on the top face of the T-shaped positioning pin, a radial guide hole matched with a pin column of the T-shaped positioning pin is formed in the sleeve, the tail end of the pin column is inserted into the sleeve, the tail end of each pin column jointly tightly holds the core rod, and a connecting plate is arranged between the opposite ends of the two concentric outer supporting sleeves. A plurality of radial thread sleeves are evenly arranged on the inner surface of the connecting plate, the positioning bolts are screwed in the radial thread sleeves, and through holes corresponding to the positioning bolts are formed in the sleeve. The tool solves the problem that the core rod is difficult to replace when the spring machine winds the spring, reduces the operation difficulty, is convenient and fast to replace the core rod, and is wide in application range.

Description

Technical Field

[0001] The utility model relates to the technical field of spring manufacturing, in particular to a winding tooling with a replaceable mandrel for a spring machine. Background Art

[0002] When a spring machine winds a spring, a mandrel needs to be replaced for each type of spring processed. However, when replacing the mandrel, it is necessary to ensure the position accuracy and positioning stability of the mandrel. During operation, it has high requirements for the working experience of the staff and is difficult to operate. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a winding tooling with a replaceable mandrel for a spring machine, which has a reasonable structure and reliable use, solves the problem of difficult mandrel replacement when the spring machine winds a spring, reduces the operation difficulty, is convenient and fast when replacing the mandrel, and has a wide application range while ensuring the adaptability to various mandrels and the stability when winding a spring.

[0004] The technical solution of the utility model is as follows:

[0005] A winding tooling with a replaceable mandrel for a spring machine includes a sleeve and a mandrel located in the sleeve. The technical key points are: two concentric outer support sleeves are arranged at intervals along the axial direction on the outer periphery of the sleeve, a plurality of support columns are arranged between the concentric outer support sleeves and the sleeve, a plurality of radial springs are uniformly fixed on the inner peripheral surface of the concentric outer support sleeves, a T-shaped positioning pin is fixed at the free end of the radial spring, a guide post inserted into the radial spring is arranged on the top surface of the T-shaped positioning pin, a radial guide hole matched with the pin column of the T-shaped positioning pin is arranged on the sleeve, the end of the pin column is inserted into the sleeve, and the ends of each pin column jointly hold the mandrel tightly. A connecting plate is arranged between the opposite ends of the two concentric outer support sleeves, a plurality of radial screw sleeves are uniformly arranged on the inner surface of the connecting plate, a positioning bolt is screwed into the radial screw sleeve, a through hole corresponding to the positioning bolt is arranged on the sleeve, and the tip of the positioning bolt passes through the through hole and enters the sleeve to press against the mandrel.

[0006] For the above-mentioned winding tooling with a replaceable mandrel for a spring machine, the arrangement angles of the T-shaped positioning pins in the two concentric outer support sleeves are the same, a positioning pressure bar is connected between two pin columns in the same direction in the sleeve, and a guide inclined surface is arranged at the front end of each positioning pressure bar.

[0007] For the above-mentioned winding tooling with a replaceable mandrel for a spring machine, the number of the radial screw sleeves is four, the number of the T-shaped positioning pins in the same concentric outer support sleeve is four, and the number of the support columns in the same concentric outer support sleeve is four and is arranged staggeredly with the T-shaped positioning pins.

[0008] For the above-mentioned winding tooling with a replaceable mandrel for a spring machine, a pair of clamping planes are symmetrically arranged on the outer wall at the rear end of the sleeve.

[0009] The beneficial effects of the present utility model are as follows:

[0010] The present utility model is suitable for sharing mandrels of various sizes, and thus is suitable for processing springs of various specifications. During use, the mandrel is inserted into the sleeve, and each radial spring pushes the T-shaped positioning pin to move towards the center of the sleeve. Then, the ends of the T-shaped positioning pins in the same concentric outer support sleeve jointly hold the outer circumference of the mandrel tightly. The T-shaped positioning pins in the front and rear two concentric outer support sleeves achieve pre-stable centering of the mandrel, and then each positioning bolt is used to tightly press the mandrel. The present utility model solves the problem of the difficult replacement of the mandrel when winding springs by a spring machine. Under the condition of ensuring the adaptability to various mandrels and the stability during spring winding, the operation difficulty is reduced, the mandrel replacement is convenient and fast, and the applicable range is wide. Description of the Drawings

[0011] Figure 1 is a structural schematic diagram of the present utility model;

[0012] Figure 2 is Figure 1 the sectional view taken along line A-A in

[0013] Figure 3 is Figure 1 the sectional view taken along line B-B in

[0014] In the figure: 1. Mandrel, 2. Concentric outer support sleeve, 3. Connecting plate, 4. Sleeve, 5. Clamping plane, 6. Radial screw sleeve, 7. Positioning bolt, 8. Radial spring, 9. T-shaped positioning pin, 10. Support column, 11. Guide column, 12. Positioning pressure strip. Detailed Embodiment

[0015] The present utility model will be described in detail according to the accompanying drawings of the specification.

[0016] As Figures 1 to 3 shown, the winding tooling with a replaceable mandrel of this spring machine includes a sleeve 4 and a mandrel 1 located in the sleeve 4.

[0017] Among them, two concentric outer support sleeves 2 are axially spaced along the outer periphery of the sleeve 4, and four support columns 10 are provided between the concentric outer support sleeve 2 and the sleeve 4. Four radial springs 8 are uniformly fixed on the inner peripheral surface of the concentric outer support sleeve 2. A T-shaped positioning pin 9 is fixed at the free end of the radial spring 8. A guide post 11 inserted into the radial spring 8 is provided on the top surface of the T-shaped positioning pin 9. Radial guide holes matching with the pin columns of the T-shaped positioning pin 9 are provided on the sleeve 4. The ends of the pin columns are inserted into the sleeve 4, and the ends of each pin column jointly hold the mandrel 1 tightly. In this embodiment, the support columns 10 in the same concentric outer support sleeve 2 are arranged staggeredly with the T-shaped positioning pins 9. The arrangement angles of the T-shaped positioning pins 9 in the two concentric outer support sleeves 2 are the same. A positioning pressure strip 12 is connected between two pin columns in the same direction in the sleeve 4, and a guide inclined surface is provided at the front end of each positioning pressure strip 12.

[0018] A connecting plate 3 is provided between the opposite ends of the two concentric outer support sleeves 2. Four radial screw sleeves 6 are uniformly provided on the inner surface of the connecting plate 3. A positioning bolt 7 is screwed into the radial screw sleeve 6. A through hole corresponding to the positioning bolt 7 is provided on the sleeve 4. The tip of the positioning bolt 7 passes through the through hole and enters the sleeve 4 to press against the mandrel 1.

[0019] In this embodiment, a pair of clamping planes 5 are symmetrically provided on the outer wall of the rear end of the sleeve 4.

[0020] Working principle:

[0021] Push the mandrel 1 into the sleeve 4, and each positioning pressure strip 12 clamps the mandrel 1. Then the operator screws the positioning bolt 7 to achieve enhanced positioning. At this time, the spring winding work can be carried out on the front part of the mandrel 1.

[0022] The above has described the embodiments of the present invention in detail, but the content described is only the preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equal changes and improvements made within the scope of the creation of the present invention shall still fall within the scope covered by this patent.

Claims

1. A winding tool for a spring machine with a replaceable mandrel, comprising a sleeve and a mandrel located in the sleeve, characterized in that: Two concentric outer support sleeves are axially spaced apart on the outer circumference of the sleeve, a plurality of support columns are arranged between the concentric outer support sleeve and the sleeve, a plurality of radial springs are evenly fixed on the inner circumference of the concentric outer support sleeve, a T-shaped locating pin is fixed on the free end of the radial spring, a guide column for inserting the radial spring is arranged on the top surface of the T-shaped locating pin, a radial guide hole is arranged on the sleeve and cooperates with the pin column of the T-shaped locating pin, the end of the pin column is inserted into the sleeve, and the ends of each pin column jointly hold the core rod, a connecting plate is arranged between the opposite ends of the two concentric outer support sleeves, a plurality of radial screw sleeves are evenly arranged on the inner surface of the connecting plate, the positioning bolts are screwed into the radial screw sleeves, a through hole corresponding to the positioning bolts is arranged on the sleeve, and the tip of the positioning bolt passes through the through hole into the sleeve and presses the core rod tightly.

2. The winding tool for a spring machine with a replaceable mandrel according to claim 1, characterized in that: The arrangement angles of the T-shaped positioning pins in the two concentric outer support sleeves are the same, and a positioning strip is connected between the two pins in the same direction in the sleeve, and a guiding inclined surface is provided at the front end of each positioning strip.

3. The winding tool for a spring machine with a replaceable mandrel according to claim 1, characterized in that: The number of the radial screw sleeves is four, the number of the T-shaped positioning pins in the same concentric outer support sleeve is four, and the number of the support columns in the same concentric outer support sleeve is four and they are arranged alternately with the T-shaped positioning pins.

4. The winding tool for a spring machine with a replaceable mandrel according to claim 1, characterized in that: A pair of clamping planes are symmetrically arranged on the rear end outer wall of the sleeve.

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