Guide pillar with buffer structure

Abstract

The guide pillar with the buffer structure comprises a guide pillar body, the periphery of the guide pillar body is connected with a limiting disc and a supporting sleeve in a sliding mode, a plurality of guide holes are evenly formed in the circumference of the upper portion of the supporting sleeve, and oil cavity holes with the diameter larger than that of the guide holes are formed in the middles of the guide holes. A piston with a hole is arranged in the oil cavity hole in a sliding and sealing mode. After the guide sleeve is pressed on the buffering movable disc, elastic supporting force can be provided for the guide sleeve under the action of the buffering spring, the buffering effect is achieved, when the piston moves in the oil cavity hole, hydraulic oil needs to pass through the damping hole in a reciprocating mode under the action of pressure, the good damping effect can be achieved, rapid buffering is achieved, and the buffering device is extremely practical; the height of the buffer structure can be adjusted by adjusting the limiting locking screws to be matched with different limiting holes, the installation requirements of different positions are met, and convenience and rapidness are achieved.

Description

Technical Field

[0001] This utility model relates to the field of guide posts, specifically a guide post with a buffer structure. Background Technology

[0002] Guide bushings are mold accessories used in conjunction with guide pillars to provide guidance. The clearance between them is generally very small, within 0.05mm. They are indispensable components in stamping equipment to ensure the accuracy of movement. However, most existing guide pillars do not have a buffer structure. When the upper die falls, they mostly rely on the buffer structure set in the die itself to reduce shock, and the shock absorption effect is poor.

[0003] Therefore, those skilled in the art have provided a guide post with a buffer structure to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a guide post with a buffer structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A guide post with a buffer structure includes a guide post body, a limiting disk and a support sleeve slidably connected to the periphery of the guide post body, a plurality of guide holes evenly distributed around the upper circumference of the support sleeve, an oil cavity with a diameter larger than the guide hole in the center of the guide hole, a perforated piston slidably and sealed inside the oil cavity, piston rods are provided above and below the perforated piston to movably and sealably cooperate with the guide holes, a buffer movable disk is fixedly connected to the top of the piston rod, a buffer spring is provided around the support sleeve to press between the limiting disk and the buffer movable disk, and a plurality of damping holes are provided on the piston.

[0007] As a further embodiment of this utility model: the limiting plate and the support sleeve are integrally formed, and the limiting plate is set above the support sleeve. The outer wall of the limiting plate is connected to a limiting locking screw by a thread. Multiple limiting holes are opened on the symmetrical sidewalls of the guide post body. The limiting locking screw cooperates with the limiting holes to achieve locking.

[0008] As a further embodiment of this utility model: a sealing ring is pressed inside the sealing groove opened on the inner wall of the guide hole at the top and bottom of the oil cavity hole, and the piston rod and the guide hole are slidably sealed together by the sealing ring.

[0009] As a further embodiment of this utility model: the oil cavity is filled with hydraulic oil, and a bottom vent hole communicating with the bottom of the guide hole is provided on the side wall of the support sleeve.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. This utility model can provide elastic support for the guide sleeve under the action of the buffer spring after the guide sleeve is pressed on the buffer movable plate, so as to play a buffering role. When the piston moves in the oil chamber hole, the hydraulic oil has to pass through the damping hole repeatedly under the pressure, which can play a very good damping effect and achieve rapid shock absorption. It is extremely practical.

[0012] 2. This utility model can adjust the height of the buffer structure by adjusting the limiting locking screw and cooperating with different limiting holes, so as to meet the installation requirements of different positions, which is convenient and quick. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a left sectional view of the present invention;

[0015] Figure 3 This is a top view of the perforated piston in this utility model;

[0016] Figure 4 This utility model Figure 2 A magnified view of a portion of point A in the middle.

[0017] In the diagram: 1. Guide post body; 2. Limiting hole; 3. Limiting plate; 4. Limiting locking screw; 5. Support sleeve; 6. Buffer spring; 7. Buffer movable plate; 8. Piston rod; 9. Guide hole; 10. Piston with hole; 1001. Damping hole; 11. Oil chamber; 12. Sealing ring; 13. Bottom vent hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-4In this embodiment of the utility model, a guide post with a buffer structure includes a guide post body 1. A limiting disk 3 and a support sleeve 5 are slidably connected around the guide post body 1. Multiple guide holes 9 are evenly distributed around the upper circumference of the support sleeve 5. The center of the guide hole 9 is an oil cavity 11 hole with a diameter larger than the guide hole 9. A perforated piston 10 is slidably and sealed inside the oil cavity 11 hole. A piston rod 8 is provided above and below the perforated piston 10, which is movably and sealed to cooperate with the guide hole 9. A buffer movable disk 7 is fixedly connected to the top of the piston rod 8. A buffer spring 6 is provided around the support sleeve 5, which is pressed between the limiting disk 3 and the buffer movable disk 7. Multiple damping holes 1001 are provided on the piston.

[0020] By adopting the above technical solution, when using this guide post, after the guide sleeve is pressed on the buffer movable plate 7, it can provide elastic support force for the guide sleeve under the action of the buffer spring 6, thus playing a buffering role. When the piston moves in the oil chamber 11 hole, under the action of pressure, the hydraulic oil has to reciprocate through the damping hole 1001, which can play a very good damping effect, achieve rapid shock absorption, and is extremely practical.

[0021] The limiting plate 3 and the support sleeve 5 are integrally formed, and the limiting plate 3 is set above the support sleeve 5. The outer wall of the limiting plate 3 is connected by a limiting locking screw 4 through a thread. Multiple limiting holes 2 are opened on the symmetrical side wall of the guide post body 1. The limiting locking screw 4 cooperates with the limiting holes 2 to achieve locking.

[0022] After adopting the above technical solution, the height of this buffer structure can be adjusted by adjusting the limit locking screw 4 to cooperate with different limit holes 2, so as to meet the installation requirements of different positions, which is convenient and quick.

[0023] In this case, a sealing ring 12 is pressed inside the sealing groove opened on the inner wall of the guide hole 9 at the top and bottom of the oil cavity 11, and the piston rod 8 and the guide hole 9 are slidably sealed through the sealing ring 12.

[0024] The oil chamber 11 is filled with hydraulic oil, and the support sleeve 5 has a bottom vent hole 13 that communicates with the bottom of the guide hole 9, which can ensure that the piston rod 8 can move smoothly.

[0025] The working principle of this utility model is as follows: When in use, the guide sleeve is installed on the periphery of the guide post body 1. Then, according to the installation requirements, the height of the buffer can be adjusted by rotating the limiting locking screw 4 to cooperate with the limiting holes 2 of different heights. After the guide sleeve is pressed on the buffer movable plate 7, it can provide elastic support force for the guide sleeve under the action of the buffer spring 6, thus playing a buffering role. When the piston moves in the oil chamber 11 hole, under the action of pressure, the hydraulic oil has to reciprocate through the damping hole 1001, which can play a very good damping effect, achieve rapid shock absorption, and is extremely practical.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A guide post with a buffer structure, comprising a guide post body (1), characterized in that: The guide column body (1) is peripherally connected with a limiting disc (3) and a supporting sleeve (5), the supporting sleeve (5) is provided with a plurality of guide holes (9) on the upper periphery, the middle part of the guide hole (9) is an oil cavity (11) hole with a larger diameter than the guide hole (9), the oil cavity (11) hole is internally and slidingly sealed with a hole piston (10), the hole piston (10) is provided with a piston rod (8) above and below and in movable sealing cooperation with the guide hole (9), the top of the piston rod (8) is fixedly connected with a buffer movable disc (7), the supporting sleeve (5) is peripherally provided with a buffer spring (6) clamped between the limiting disc (3) and the buffer movable disc (7), and a plurality of damping holes (1001) are formed in the piston.

2. The guide pillar with a buffer structure according to claim 1, characterized in that: The limiting disc (3) is integrally formed with the supporting sleeve (5), and the limiting disc (3) is arranged above the supporting sleeve (5); a limiting locking screw (4) is threadedly connected to the outer wall of the limiting disc (3); a plurality of limiting holes (2) are formed in the symmetrical side walls of the guide column body (1) periphery; and the limiting locking screw (4) is locked in cooperation with the limiting hole (2).

3. The guide pillar with a buffer structure according to claim 1, characterized in that: A sealing groove is formed in the inner wall of the guide hole (9) and clamps a sealing ring (12) at the top and bottom of the oil cavity (11) hole.

4. The guide pillar with a buffer structure according to claim 1, wherein: The oil cavity (11) hole is filled with hydraulic oil, and a bottom air passage (13) is formed in the side wall of the supporting sleeve (5) and is in communication with the bottom of the guide hole (9).

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