A two-way buffer assembly tool

Abstract

The utility model relates to a kind of two-way bumper assembly tool in buffer assembly technical field, comprising: fixed seat;Outer expansion diameter sleeve, fixed in the middle part of the fixed seat top surface, its upper segment inner cavity is inverted conical cavity, and the side wall of conical cavity is equipped with several expansion diameter grooves;Inner neck sleeve, its upper segment is inverted conical section, and the side wall of conical section is equipped with several neck grooves;Telescopic equipment, it is equipped in the fixed seat, and its output shaft is coaxially connected with inner neck sleeve lower end;The utility model drives the single action of inner neck sleeve by telescopic equipment, radial expansion (support buffer cylinder) of outer expansion diameter sleeve can be realized, the radial contraction (clamping piston rod) of inner neck sleeve upper segment can also be realized, solve the problem that traditional tool changes fixture, assembly efficiency is improved by more than 40%.

Description

Technical Field

[0001] This utility model relates to the field of buffer assembly technology, and in particular to a bidirectional buffer assembly fixture. Background Technology

[0002] In the assembly process of bidirectional buffers, traditional tooling typically requires multiple independent clamps or support devices to complete operations at different stages. For example, traditional tooling usually only has unidirectional expansion or clamping functions, which means that the support of the buffer cylinder and the clamping of the piston rod need to use different clamps. This not only increases the complexity of the assembly process, but also significantly reduces production efficiency.

[0003] To address this, we designed a bidirectional buffer assembly fixture. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model discloses a bidirectional buffer assembly fixture.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A bidirectional buffer assembly fixture, comprising:

[0007] Fixed base;

[0008] An outer diameter expansion sleeve is fixed to the middle of the top surface of the fixing seat. Its upper inner cavity is an inverted conical cavity, and the side wall of the conical cavity is provided with several diameter expansion grooves in the circumferential direction.

[0009] The inner neck sleeve has an inverted conical section at the top, and the side wall of the conical section is provided with several necking grooves in the circumferential direction.

[0010] A telescopic device is provided on the fixed base, and its output shaft is coaxially connected to the lower end of the inner retractable neck sleeve.

[0011] When the telescopic device retracts, it drives the inner retracting neck sleeve to move downward. Through the squeezing fit between the conical section and the conical cavity, the upper section of the outer expansion sleeve expands radially to support the inner wall of the buffer cylinder, or the upper section of the inner retracting neck sleeve contracts radially to clamp the buffer piston rod.

[0012] Furthermore, the lower end of the outer diameter expansion sleeve is provided with a flange, which is detachably connected to the fixing seat by bolts.

[0013] Furthermore, the top surface of the fixed seat is provided with multiple radial grooves, and each radial groove is movably fitted with a slider. The bolt passes through the flange and is screwed onto the slider.

[0014] Furthermore, the necking groove and the diameter-expanding groove are staggered in the circumferential direction.

[0015] Furthermore, the number of the expansion groove and the necking groove is 4-8.

[0016] Furthermore, the taper angle of both the conical cavity and the conical segment is 15°~30°.

[0017] Furthermore, the telescopic device is a hydraulic cylinder, a pneumatic cylinder, or an electric push rod, and its output shaft is detachably connected to the inner retractable neck sleeve.

[0018] Furthermore, the bottom of the mounting base is provided with a U-shaped mounting hole.

[0019] Furthermore, the lower section of the inner neck sleeve is a guide section, which slides in conjunction with the inner wall of the outer diameter expansion sleeve.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. By driving the inner neck sleeve with a single action of telescopic device, the radial expansion of the outer diameter sleeve (supporting the buffer cylinder) and the radial contraction of the upper section of the inner neck sleeve (clamping the piston rod) can be realized, which solves the problem of changing fixtures in traditional tooling and improves assembly efficiency by more than 40%.

[0022] 2. The expansion groove and the necking groove adopt a circumferential staggered distribution design to avoid stress concentration causing the sleeve to crack. At the same time, the sliding fit between the guide section and the inner wall of the outer expansion sleeve ensures that the inner necking sleeve moves without deviation.

[0023] 3. The slider and radial groove are designed to adapt to different models of outer diameter sleeves by adjusting the position of the slider in the groove, thereby achieving the assembly of different models of buffers. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the first structure of this utility model;

[0025] Figure 2 This is a cross-sectional view of the first structure of this utility model;

[0026] Figure 3 This is an exploded view of the first structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the second structure of this utility model.

[0028] In the diagram: 1. Fixed seat; 11. Radial groove; 12. Slider; 2. Outer expansion sleeve; 21. Conical cavity; 22. Expansion groove; 23. Flange; 3. Inner necking sleeve; 31. Conical section; 32. Necking groove; 33. Guide section; 4. Telescopic device; 5. Bolt. Detailed Implementation

[0029] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if terms such as "upper", "lower", "front", "rear", "left", "right" indicate orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention. It should be understood that if terms such as "end", "side", "end portion", "side part", "lateral", "longitudinal", etc. indicate orientation or positional relationship, they are only corresponding to the length and width of the corresponding component. That is, "end" indicates the head and tail area in the length direction of the corresponding component, and "side part" indicates the head and tail area in the width direction of the corresponding component. They are used for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation.

[0030] Example 1, in conjunction with Appendix Figure 1-3 A bidirectional buffer assembly fixture, comprising:

[0031] Two U-shaped mounting holes 13 are symmetrically opened at the bottom of the fixed base 1 for bolt fixing to the workbench (not shown in the figure); the top surface is provided with pre-made screw holes.

[0032] The lower end of the outer diameter expansion sleeve 2 is welded with a flange 23, which is bolted to the pre-made bolt hole by bolts 5 through the flange; the upper inner cavity is an inverted conical cavity 21 with a taper angle of 25°, and six equidistant expansion grooves 22 are opened on the side wall of the conical cavity.

[0033] The upper section of the inner neck sleeve 3 is an inverted conical section 31 with a taper angle of 25°. Six necking grooves 32 are opened in the circumferential direction on the side wall. The necking grooves 32 and the expansion grooves 22 of the outer expansion sleeve 2 are staggered in the circumferential direction. Preferably, the stagger angle is 30°. The lower section is a guide section 33, whose outer diameter slides with the inner wall of the outer expansion sleeve 2.

[0034] The telescopic device 4 uses a hydraulic cylinder, with the cylinder body vertically fixed to the center of the fixed base 1; the output shaft is coaxially connected to the lower end of the inner retractable neck sleeve 3 through a detachable structure such as quick-release buckles and bolts.

[0035] Working process: 1. First, the buffer cylinder body is fitted onto the outer expansion sleeve 2. Then, the hydraulic cylinder retracts, driving the inner narrowing sleeve 3 to move downwards. The conical section 31 squeezes the conical cavity 21, forcing the upper section of the outer expansion sleeve 2 to expand radially until it tightly supports the inner wall of the cylinder. At this point, the first piston rod (with a piston) and end cap can be assembled. Subsequently, the hydraulic cylinder extends and removes the workpiece. Then, after flipping the workpiece 180°, the first piston rod is inserted into the inner narrowing sleeve 3. Then, the hydraulic cylinder retracts, driving the inner narrowing sleeve 3 to move downwards. The conical section 31 squeezes the conical cavity 21, forcing the conical section 31 of the inner narrowing sleeve 3 to contract radially, thus clamping the piston rod. At this point, the second piston rod (with a piston) and end cap can be assembled.

[0036] Example 2, in conjunction with Appendix Figure 4 A bidirectional buffer assembly fixture differs from Embodiment 1 in that: four radial grooves 11 are evenly distributed along the circumference on the top surface of the fixed base 1, and a slidable T-shaped slider 12 is embedded in the groove. The slider 12 is screwed onto the flange by bolts 5. In this way, the position of the slider 12 in the radial grooves 11 can be adjusted to accommodate different models of outer diameter sleeves 2.

[0037] The telescopic device 4 is replaced with an electric push rod, and the output shaft is connected to the inner retraction neck sleeve 3 by a thread.

[0038] The number of expansion grooves 22 and necking grooves 32 was changed to 4, and the taper angle was adjusted to 18°.

[0039] Flange 23 is directly fixed to the pre-made screw holes of the fixing seat 1 by bolts (eliminating the slide block structure).

[0040] In some other embodiments, the number of expansion grooves 22 and necking grooves 32 is another number between 4 and 8.

[0041] In some other embodiments, the taper angle between the conical cavity 21 and the conical segment 31 is another angle between 15° and 30°.

[0042] In some other embodiments, the telescopic device 4 is a cylinder.

[0043] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A bidirectional buffer assembly fixture, characterized in that: include: Fixed base (1); An outer diameter expansion sleeve (2) is fixed to the middle of the top surface of the fixed base (1). Its upper inner cavity is an inverted conical cavity (21), and the side wall of the conical cavity (21) is provided with several diameter expansion grooves (22). The inner neck sleeve (3) has an inverted conical section (31) at its upper part, and the side wall of the conical section (31) is provided with several neck grooves (32) in the circumferential direction. Telescopic device (4) is provided on the fixed base (1), and its output shaft is coaxially connected to the lower end of the inner retractable neck sleeve (3); When the telescopic device (4) retracts, it drives the inner neck sleeve (3) to move downward. Through the squeezing cooperation between the conical section (31) and the conical cavity (21), the upper section of the outer diameter sleeve (2) expands radially to support the inner wall of the buffer cylinder, or the upper section of the inner neck sleeve (3) retracts radially to clamp the buffer piston rod.

2. The bidirectional buffer assembly fixture according to claim 1, characterized in that: The lower end of the outer diameter sleeve (2) is provided with a flange (23), and the flange (23) is detachably connected to the fixed seat (1) by bolts (5).

3. The bidirectional buffer assembly fixture according to claim 2, characterized in that: The top surface of the fixed seat (1) is provided with multiple radial grooves (11), and each radial groove (11) is movably fitted with a slider (12). The bolt (5) passes through the flange (23) and is screwed onto the slider (12).

4. The bidirectional buffer assembly fixture according to claim 1, characterized in that: The necking groove (32) and the diameter expansion groove (22) are staggered in the circumferential direction.

5. The bidirectional buffer assembly fixture according to claim 1, characterized in that: The number of the expansion groove (22) and the necking groove (32) is 4-8.

6. The bidirectional buffer assembly fixture according to claim 1, characterized in that: The taper angle of both the conical cavity (21) and the conical segment (31) is 15°~30°.

7. The bidirectional buffer assembly fixture according to claim 1, characterized in that: The telescopic device (4) is a hydraulic cylinder, pneumatic cylinder or electric push rod, and its output shaft is detachably connected to the inner retractable neck sleeve (3).

8. The bidirectional buffer assembly fixture according to claim 1, characterized in that: The bottom of the fixing base (1) is provided with a U-shaped mounting hole (13).

9. The bidirectional buffer assembly fixture according to claim 1, characterized in that: The lower section of the inner neck sleeve (3) is a guide section (33), which slides with the inner wall of the outer diameter sleeve (2).

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