Spring press fitting tool

Abstract

The utility model discloses a spring press fitting tool which comprises a supporting seat, a pressing rod and a press fitting cylinder, and the pressing rod is movably arranged on a pressing rod seat. The supporting seat is provided with a positioning groove, and the contour shape of the positioning groove is matched with the contour shape of a seat head of a first rod piece of the closing spring assembly. The first rod piece of the closing spring assembly is supported and positioned through the supporting seat, the spring is supported in an auxiliary mode through the supporting table, positioning is accurate, more stable and reliable, deviation is not prone to occurring, one-time inserting in place is facilitated, and time and labor are saved; and the closing crank and the connecting piece are both installed in an open environment, so that alignment is more convenient, tightening operation is also convenient, and the whole assembly process is time-saving and labor-saving. And moreover, the pressing rod can be driven by the pressing cylinder to finish pressing, so that the use of a pressing machine is saved, and the equipment cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of spring pressing devices, in particular to a spring pressing tool. Background Art

[0002] Spring operating mechanisms are commonly used in high-voltage circuit breaker operating mechanisms. The closing spring assembly, the core component of the spring operating mechanism, features large dimensions and a high spring constant. During installation, the closing spring assembly requires a significant compression force before assembly.

[0003] Figure 1 、 Figure 2 An existing spring press-fitting tool is shown. A press-fitting cavity 101 is vertically opened on the press-fitting seat 100, and long grooves are opened on opposite sides of the press-fitting seat 100 to facilitate the assembly of connecting screws and nuts. During press-fitting, a spring rod and a spring 200 are vertically inserted into the press-fitting cavity 101. After the other spring rod and the spring 200 are pressed downward into place using a vertical press, a cylindrical limit pin is inserted at the connection point of the two spring rods to limit the two spring rods to prevent the springs from returning to the original position, thus completing the assembly. This spring press-fitting tool has the following problems: (1) There is no positioning structure for the spring rod in the press-fitting cavity 101. The spring rod is easily offset in the press-fitting cavity 101 and needs to be adjusted multiple times. In addition, the connecting screw and nut need to be inserted into the long groove for connection, which is not convenient for alignment and tightening operations. The entire assembly process is time-consuming and labor-intensive. (2) The tool needs to be equipped with a press, and the equipment cost is relatively high. Utility Model Content

[0004] Aiming at the above shortcomings in the existing production, the present applicant provides a device with a reasonable structure.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A spring press-fitting tool comprises a support seat, a press rod and a press-fitting cylinder. The press rod is movably arranged on the press rod seat. A positioning groove is provided on the support seat. The contour shape of the positioning groove matches the contour shape of the seat head of the first rod member of the closing spring assembly.

[0007] As a further improvement of the above technical solution:

[0008] A through hole is provided on the support seat, and the diameter of the through hole is larger than the rod diameter of the guide rod.

[0009] The bottom of the positioning groove of the support seat is an arc surface, and the upper and lower sides are inclined surfaces.

[0010] The contour shape of the press-fit end of the pressure rod matches the contour shape of the groove provided on the rod head of the second rod; the press-fit end of the pressure rod is in the shape of an elongated cylinder.

[0011] A sliding hole is transversely provided on the pressure rod seat, and the pressure rod is inserted into the sliding hole with clearance fit.

[0012] The pressure rod comprises a press-fitting portion and a limiting portion. The width and thickness of the press-fitting portion match the width and height of the sliding hole of the pressure rod seat. The width of the limiting portion is greater than the width of the sliding hole.

[0013] A support platform is arranged between the support seat and the pressure rod seat.

[0014] A pressing head is connected to the piston rod of the press-fitting cylinder.

[0015] The end of the pressure head facing the pressure rod is a hemispherical head.

[0016] The support seat, the support platform, the pressure rod seat and the press cylinder are arranged on the bottom plate at intervals; an operating component is arranged on the bottom plate and on one side of the press cylinder.

[0017] The beneficial effects of the utility model are as follows:

[0018] The utility model uses a support seat to support and position the first rod of the closing spring assembly, and a support platform to provide auxiliary support for the spring. This ensures precise positioning, greater stability and reliability, and is less likely to deviate, allowing for easy, one-time insertion and installation, saving time and effort. Furthermore, both the closing crank and the connector are installed in an open environment, making alignment and tightening operations easier, saving time and effort throughout the assembly process. Furthermore, the press rod is driven by a press cylinder to complete press installation, eliminating the need for a press and reducing equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional diagram of the existing spring press tooling.

[0020] Figure 2 This is a cross-sectional view of the existing spring press tooling.

[0021] Figure 3 It is a three-dimensional diagram of the present utility model.

[0022] Figure 4 This is a cross-sectional view of the present invention. At this time, the spring is pressed into place.

[0023] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0024] Figure 6 for Figure 4 Enlarged view of point B in the middle.

[0025] Figure 7 A three-dimensional diagram of the support base.

[0026] Figure 8 A three-dimensional diagram of the pressure rod.

[0027] In the figure: 100, press-fit seat; 101, press-fit cavity; 200, spring; 201, first rod; 2011, seat head; 202, second rod; 2021, groove; 203, guide rod;

[0028] 1. Base plate; 2. Support seat; 21. Positioning groove; 211. Arc surface; 212. Inclined surface; 22. Through hole; 3. Support platform; 4. Press rod; 41. Press-fitting part; 411. Press-fitting end; 42. Limiting part; 5. Press rod seat; 51. Sliding hole; 6. Press head; 61. Hemispherical head; 7. Press-fitting cylinder; 8. Operating assembly. DETAILED DESCRIPTION

[0029] The specific implementation of the present utility model will be described below with reference to the accompanying drawings.

[0030] like Figure 3 、 Figure 4 As shown, the present invention is a horizontal press-fitting device, which press-fits a closing spring assembly in a horizontal manner. The closing spring assembly includes a spring 200 , a first rod 201 , a second rod 202 and a guide rod 203 .

[0031] The base plate 1 of the present invention is sequentially arranged with a support base 2, a support platform 3, a pressure rod base 5, and a press cylinder 7. The pressure rod base 5 is provided with a movable pressure rod 4. The piston rod of the press cylinder 7 is connected to a pressure head 6. The press cylinder 7 drives the pressure head 6 to extend, which can push the pressure rod 4 forward to press the spring 200. An operating component 8 is provided on the base plate 1 and on one side of the press cylinder 7. The operating component 8 can be used to control the forward, backward, or stop movement of the press cylinder 7.

[0032] like Figure 3 、 Figure 4 As shown, the support seat 2 is used to support one end of the first rod 201 of the closing spring assembly, and the support platform 3 is used to support the spring 200 and keep the spring 200 horizontal. Figure 7 As shown, a positioning groove 21 is provided on the support seat 2 on the side facing the pressure rod 4. The contour of the positioning groove 21 matches the contour of the seat head 2011 of the first rod 201. The bottom of the positioning groove 21 is a circular arc surface 211, and the upper and lower sides are inclined surfaces 212; Figure 4 、 Figure 5 As shown, the arc surface 211 and the inclined surface 212 of the positioning groove 21 fit with the outer surface of the seat head 2011 of the first rod 201, with a large fitting area, precise positioning, more stable and reliable, not prone to offset, and easy to insert into place at one time, saving time and effort. Figure 5 、 Figure 7As shown, a through hole 22 is horizontally opened on the support seat 2 and at the bottom of the positioning groove 21. The aperture of the through hole 22 is larger than the rod diameter of the guide rod 203. The through hole 22 provides a moving space for the guide rod 203. During press-fitting, the guide rod 203 can pass through the through hole 22 to prevent the guide rod 203 from hitting the support seat 2 and damaging the guide rod 203.

[0033] like Figure 3 、 Figure 4 As shown, a sliding hole 51 is opened transversely on the pressure rod seat 5, and the pressure rod 4 is inserted into the sliding hole 51 with clearance fit. Figure 8 As shown, the pressing rod 4 includes a pressing portion 41 and a limiting portion 42, and the limiting portion 42 is arranged at one end of the pressing portion 41. Figure 3 As shown, the width and thickness of the press-fitting portion 41 match the width and height of the sliding hole 51 of the pressure rod seat 5. The press-fitting portion 41 passes through the sliding hole 51 and can move along the sliding hole 51. The limiting portion 42 is provided at one end of the press-fitting portion 41 close to the pressure head 6. The width of the limiting portion 42 is greater than the width of the sliding hole 51. The limiting portion 42 can limit the pressure rod 4 to prevent the pressure rod 4 from falling from the pressure rod seat 5. The other end of the press-fitting portion 41 opposite to the limiting portion 42 is a press-fitting end head 411. The contour shape of the press-fitting end head 411 matches the contour shape of the groove 2021 provided on the rod head of the second rod 202. Figure 6 、 Figure 8 As shown, the groove 2021 on the second rod 202 is an oblong groove, and the press-fitting end 411 of the pressure rod 4 is correspondingly set to be an oblong cylinder. During press-fitting, the press-fitting end 411 is completely fitted into the groove 2021, and the press-fitting is more stable and reliable.

[0034] like Figure 3 、 Figure 4 As shown, the end of the pressure head 6 facing the pressure rod 4 is set as a hemispherical head 61, which improves the operational flexibility and reduces the risk of damage.

[0035] like Figure 3 、 Figure 4 As shown, when the closing spring assembly is assembled using the present invention: first, the spring 200 is put on the first rod 201, the seat head 2011 of the first rod 201 is inserted into the positioning groove 21 of the support seat 2, the support platform 3 is supported on the other end of the spring 200, the connected second rod 202 and the guide rod 203 are inserted from the other end of the spring 200, and the pressure rod 4 is pushed forward until the press-fitting end head 411 extends into the groove 2021 of the second rod 202; then, the press-fitting cylinder 7 is started, and the press-fitting cylinder 7 drives the pressure head 6 to push the pressure rod 4 forward, and the pressure rod 4 pushes the second rod 202 and the guide rod 203 forward, and at the same time, the spring 200 is squeezed forward through the step surface of the second rod 202. When the spring 200 is pressed into place, the connecting hole of the guide rod 203 is opposite to the connecting hole of the first rod 201. Finally, the closing crank is connected together with the first rod 201 and the guide rod 203 through the connecting piece to complete the assembly.

[0036] The present invention supports and positions the first rod 201 of the closing spring assembly through the support base 2, and provides auxiliary support for the spring 200 through the support platform 3. This ensures precise positioning, greater stability and reliability, and is less prone to deviation, allowing for easy, one-time insertion and installation, saving time and effort. Furthermore, both the closing crank and the connector are installed in an open environment, making alignment and tightening operations easier, saving time and effort throughout the assembly process. Furthermore, the press rod 4 is driven by the press cylinder 7 to complete press assembly, eliminating the need for a press and reducing equipment costs.

[0037] The above description is an explanation of the present invention, not a limitation of the present invention. The present invention may be modified in any form without violating the spirit of the present invention.

Claims

1. A spring press fitting, characterized by: The invention comprises a support seat (2), a pressure rod (4) and a press cylinder (7), wherein the pressure rod (4) is movably arranged on the pressure rod seat (5); a positioning groove (21) is provided on the support seat (2), and the contour shape of the positioning groove (21) matches the contour shape of the seat head (2011) of the first rod (201) of the closing spring assembly.

2. The spring press-fitting tool according to claim 1, characterized in that: A through hole (22) is provided on the support seat (2), and the diameter of the through hole (22) is larger than the diameter of the guide rod (203).

3. The spring press-fitting tool according to claim 1, characterized in that: The bottom of the positioning groove (21) of the support seat (2) is an arc surface (211), and the upper and lower sides are inclined surfaces (212).

4. The spring press-fitting tool according to claim 1, characterized in that: The contour shape of the press-fit end head (411) of the pressure rod (4) matches the contour shape of the groove (2021) provided on the rod head of the second rod member (202); the press-fit end head (411) of the pressure rod (4) is in the shape of an elongated cylinder.

5. The spring press-fitting tool according to claim 1, characterized in that: A sliding hole (51) is transversely opened on the pressure rod seat (5), and the pressure rod (4) is inserted into the sliding hole (51) with clearance fit.

6. The spring press-fitting tool according to claim 1, characterized in that: The pressure rod (4) comprises a press-fitting portion (41) and a limiting portion (42). The width and thickness of the press-fitting portion (41) match the width and height of the sliding hole (51) of the pressure rod seat (5), and the width of the limiting portion (42) is greater than the width of the sliding hole (51).

7. The spring press-fitting tool according to claim 1, characterized in that: A support platform (3) is provided between the support seat (2) and the pressure rod seat (5).

8. The spring press-fitting tool according to claim 1, characterized in that: The piston rod of the press-fitting cylinder (7) is connected to a press head (6).

9. The spring press-fitting tool according to claim 8, characterized in that: One end of the pressure head (6) facing the pressure rod (4) is a hemispherical head (61).

10. The spring press-fitting tool according to claim 1, characterized in that: The support seat (2), the support platform (3), the pressure rod seat (5), and the press cylinder (7) are arranged at intervals on the bottom plate (1); an operating component (8) is arranged on the bottom plate (1) at one side of the press cylinder (7).

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