Movement protection mechanism of positioning pin

Abstract

The utility model discloses a moving protection mechanism for a positioning pin, which comprises two groups of side plates and a movable plate, the inner side of one group of side plates is provided with a positioning seat, one side of the movable plate is provided with the positioning pin, the side surface of the other group of side plates is provided with an air cylinder, and the other side of the other group of side plates is provided with a telescopic rod; the first spring and the spring sleeve between the floating block and the fixed block can quickly play a role, the first spring can effectively absorb impact force generated by impact of the movable rod, the impact force is prevented from being directly transmitted to the positioning pin, the spring sleeve further buffers acting force between the floating block and the fixed block, and the service life of the movable rod is prolonged. Instantaneous impact force applied to the positioning pin is greatly reduced through double buffering, the situation that surface materials of the positioning pin are rapidly abraded due to high-strength impact is effectively prevented, the conditions of scratches, stripping and the like are avoided, and the loss risk of dimensional precision is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to positioning pin technical field, concretely is a kind of mobile protection mechanism of positioning pin. BACKGROUND

[0002] Positioning pin is a kind of mechanical parts for determining the relative position between parts, usually cylindrical or conical, material is mostly medium carbon steel, alloy steel etc., is treated by quenching, grinding etc. Process to obtain good strength, hardness and wear resistance, its structure is generally composed of head, stem and tail, head is convenient for operation and installation, stem is the main part to realize positioning, tail can be used to fix or connect other components, and is widely used in mechanical manufacturing, automobile manufacturing, aerospace, electronic equipment manufacturing etc. Many fields, such as ensuring the installation position accuracy of parts in mechanical assembly, ensuring the welding position precision of vehicle body parts in automobile welding fixture, keeping the accurate relative position of each part in aero-engine assembly, realizing the accurate positioning of circuit board on processing equipment in printed circuit board manufacturing etc., mainly plays the role of positioning, guiding, connecting and anti-rotation, can guarantee product quality and production efficiency, improve the reliability and stability of equipment;

[0003] But the existing positioning pin has significant defects under complex working conditions, when encountering external impact, such as accidental collision during equipment operation, or due to inertia of moving parts, large impact force is generated during starting, braking and high-speed operation, due to the lack of adaptive buffer and force relief design, the strong force generated in these moments will be directly applied to the positioning pin without buffer, the surface material of the positioning pin is rapidly worn under such high-intensity impact, the originally smooth cylindrical surface or conical surface appears scratch, peeling and other conditions, resulting in loss of dimensional accuracy;More seriously, excessive impact force will cause stress concentration in the internal structure of the positioning pin, causing plastic deformation, or even direct fracture, once the positioning pin is damaged, not only the service life is greatly shortened, frequent replacement increases maintenance cost and downtime, and its positioning accuracy cannot be guaranteed, resulting in deviation of the relative position of the parts matched therewith, greatly interfering with the stable operation of the equipment, eventually seriously hindering the smooth development of production activities, affecting product quality and production efficiency. UTILITY MODEL CONTENTS

[0004] The utility model aims at: in order to solve the above-mentioned problem, provide a kind of mobile protection mechanism of positioning pin.

[0005] To achieve the above object, the utility model provides the following technical scheme: a mobile protection mechanism of positioning pin, include: side plate and movable plate, the side plate number sets two groups, one group side plate inboard is installed with the positioning seat, movable plate one side is installed with the positioning pin, another group side plate side is installed with the pneumatic cylinder, and another side is installed with telescopic link, telescopic link other end is fixed with the floating block, the floating block outside is equipped with the sliding slot, movable plate other side is fixed with the fixed block, the fixed block outside is fixed with the movable rod, movable rod inboard is equipped with the sliding block, and sliding block with the sliding slot is matched, and the first spring is fixed between sliding block and the sliding slot, the floating block with spring sleeve is fixed between the fixed block.

[0006] As a further scheme of the utility model: two groups The side plate between fixed with guide rod, movable plate side is equipped with guide hole, guide hole outside is fixed with lubricating bushing, lubricating bushing inboard is equipped with oil outlet, movable plate side is fixed with oil storage tank, oil storage tank side is equipped with visible window, oil storage tank below and between The lubricating bushing is installed with oil pump, and the oil storage tank top is equipped with oil inlet.

[0007] As a further scheme of the utility model: The guide rod with The guide hole is matched and is slidably connected, and the second spring is installed at one end of the guide rod.

[0008] As a further scheme of the utility model: Two groups The side plate below is fixed with support leg, and the support leg below is fixed with base.

[0009] As a further scheme of the utility model: The sliding slot, The movable rod, sliding block and The first spring number are all set with four groups, and are set around symmetrically on the side of the floating block and the fixed block.

[0010] As a further scheme of the utility model: The oil outlet number is set with multiple groups, and is evenly arranged on the inner side of the lubricating bushing, and the oil outlet mechanism composed of the lubricating bushing, the oil outlet and the oil pump is set with two groups.

[0011] As a further scheme of the utility model: The guide rod, The guide hole and The second spring number are all set with two groups.

[0012] As a further scheme of the utility model: The support leg number is set with four groups.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] The first spring can effectively absorb the impact force generated by the movable rod due to impact, and the impact force is avoided from being directly transmitted to the positioning pin; the spring sleeve further buffers the acting force between the floating block and the fixed block, and the double buffering greatly reduces the instantaneous impact force applied on the positioning pin, which effectively prevents the surface material of the positioning pin from being rapidly abraded due to high-strength impact, avoids scratches, peeling and the like, reduces the risk of loss of dimensional accuracy, meanwhile, the second spring installed at one end of the guide rod is compressed and rebounds by itself when the movable plate is impacted, further buffers the impact force, protects the internal structure of the positioning pin from plastic deformation or fracture caused by stress concentration, thereby greatly prolongs the service life of the positioning pin and reduces the maintenance cost and downtime caused by frequent replacement. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the overall structure schematic view of the mobile protection mechanism of the positioning pin.

[0016] Figure 2 is the structure schematic view in the mobile protection mechanism of the positioning pin.

[0017] Figure 3 is the structure schematic view in the mobile protection mechanism of the positioning pin.

[0018] Figure 4 is the structure schematic view in the mobile protection mechanism of the positioning pin.

[0019] Figure 5 is the structure schematic view in the mobile protection mechanism of the positioning pin.

[0020] In the figure: 1, side plate; 2, movable plate; 3, positioning seat; 4, positioning pin; 5, air cylinder; 6, telescopic rod; 7, floating block; 8, sliding groove; 9, fixed block; 10, movable rod; 11, first spring; 12, spring sleeve; 13, guide rod; 14, guide hole; 15, lubricating sleeve; 16, oil outlet; 17, oil storage tank; 18, visual window; 19, oil pump; 20, oil inlet; 21, second spring; 22, supporting leg; 23, base. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than 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.

[0022] In the description of the utility model, it needs to explain, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the utility model, it needs to explain, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. The embodiments will be described below according to the overall structure of the utility model.

[0023] Referring to Figures 1 to 5 In the utility model embodiment, a kind of mobile protection mechanism of positioning pin, it include: side plate 1 and movable plate 2, side plate 1 It is provided with two groups, and it constructs stable frame for entire mechanism, one side of movable plate 2 is equipped with positioning pin 4, its movement is directly related to the execution of positioning operation, another side plate 1 side is equipped with cylinder 5, this cylinder 5 plays main driving role when mechanism operates, when cylinder 5 starts, telescopic rod 6 extends forward, and drives floating block 7 forward with it fixed, fixed block 9 is connected with floating block 7 by movable rod 10, the sliding block on movable rod 10 slides in the sliding slot 8 outside floating block 7, since first spring 11 is connected with sliding block and sliding slot 8, when floating block 7 moves, first spring 11 can buffer the impact force generated by movable rod 10 due to movement, play the role of preliminary protection positioning pin 4, while, spring sleeve 12 fixed between floating block 7 and fixed block 9 can further buffer the acting force between the two, enhance protection effect, sliding slot 8, movable rod 10, sliding block and first spring 11 are all provided with four groups, respectively symmetrically around setting at floating block 7 and fixed block 9 side, ensure that buffering force is evenly distributed, improve protection efficiency.

[0024] The two groups of side plates 1 are fixed with guide rods 13, which play a key guiding role in the movement of the movable plate 2. The movable plate 2 is provided with guide holes 14 on the side, and the guide rods 13 are matched with the guide holes 14 and are in sliding connection, which ensures the smooth movement of the movable plate 2 in the predetermined direction and avoids the deviation of the positioning pin 4. The guide rods 13 are provided with second springs 21 at one end, which can further buffer the impact force of the movable plate 2 through compression and rebound when the movable plate 2 is impacted by external force, thereby protecting the positioning pin 4 from excessive impact. The guide rods 13, the guide holes 14 and the second springs 21 are provided in two groups, which can guarantee the guiding and buffering effect from multiple aspects and maintain the stability of the mechanism operation.

[0025] The movable plate 2 is provided with guide holes 14 on the side, and the guide holes 14 are fixed with lubricating sleeves 15 on the outside. The lubricating sleeves 15 are provided with oil outlets 16 on the inside. The movable plate 2 is fixed with an oil storage tank 17 on the side. The oil storage tank 17 is used for storing lubricating oil. The operator can add lubricating oil to the oil storage tank 17 through the oil inlet 20 and observe the oil level through the observation window 18. When the mechanism is running, the oil pump 19 is started to extract and deliver the lubricating oil in the oil storage tank 17 to the lubricating sleeve 15. The multiple groups of oil outlets 16 evenly arranged on the inside of the lubricating sleeve 15 will evenly smear the lubricating oil on the surface of the guide rod 13, reducing the friction between the guide rod 13 and the guide hole 14, making the movement of the movable plate 2 more smooth, and also reducing the risk of damage to the positioning pin 4 due to friction. The oil outlet mechanism composed of the lubricating sleeve 15, the oil outlet 16 and the oil pump 19 is provided in two groups, which can lubricate the guide rod 13 from multiple directions to help the movable plate 2 move smoothly.

[0026] The two groups of side plates 1 are fixed with support legs 22 below. The support legs 22 are provided in four groups. The support legs 22 are fixed with a base 23 below. The entire mechanism is installed on the base 23. The four groups of support legs 22 below the side plates 1 play a stable supporting role, ensuring the stability of the mechanism during operation and providing a reliable foundation for the normal work of the positioning pin 4.

[0027] Meanwhile, the contents not described in detail in the specification all belong to the existing technology known to those skilled in the art.

[0028] The working principle of the utility model is: the operator carefully checks the side plate 1, movable plate 2, positioning seat 3, positioning pin 4, air cylinder 5, telescopic rod 6, floating block 7, fixed block 9, movable rod 10, guide rod 13, support leg 22, base 23 and other components, ensures that there is no damage, deformation or loss, the connecting part is firm, the proper amount of lubricating oil is injected into the oil storage tank 17 through the oil injection opening 20, the oil level is ensured to be in the normal range by observing the visual window 18, the oil pump 19, the lubricating sleeve 15 and the oil outlet 16 are checked, and it is ensured that the connection is normal and there is no blockage, the control switch of the air cylinder 5 is opened, the air cylinder 5 starts to work, the telescopic rod 6 extends forward, the floating block 7 fixedly connected therewith is pushed to move forward, along with the movement of the floating block 7, the fixed block 9 is connected with the movable rod 10, the sliding block on the movable rod 10 slides in the sliding groove 8 outside the floating block 7, in this process, the first spring 11 plays a buffering role, absorbs the impact force generated by the movement of the movable rod 10, and preliminarily protects the positioning pin 4, at the same time, the spring sleeve 12 further buffers the acting force between the floating block 7 and the fixed block 9, enhances the protection effect, the movable plate 2 starts to move under the driving of the floating block 7, the guide rod 13 is slidably connected with the side surface guide hole 14 of the movable plate 2, provides accurate guidance for the movement of the movable plate 2, makes it move smoothly along the determined direction, avoids the deviation of the positioning pin 4, if the movable plate 2 is impacted by external force, the second spring 21 at one end of the guide rod 13 will compress and rebound, further buffers the impact force, protects the positioning pin 4, the oil pump 19 starts, lubricating oil in the oil storage tank 17 is extracted and delivered to the lubricating sleeve 15, the multiple groups of oil outlets 16 evenly surrounded on the inner side of the lubricating sleeve 15 evenly smear the lubricating oil on the surface of the guide rod 13, continuously reduce the friction between the guide rod 13 and the guide hole 14, ensure that the movable plate 2 moves smoothly, reduce the risk of damage of the positioning pin 4 due to friction, after completing the positioning work, the control switch of the air cylinder 5 is closed, the air cylinder 5 stops working, the telescopic rod 6 retracts, drives the floating block 7, the movable plate 2 and the positioning pin 4 to reset, the wear condition of each component is checked regularly, especially the easily damaged components such as the positioning pin 4, the guide rod 13, the first spring 11 and the second spring 21, if there is serious wear or damage, replace them in time, clean the dust, sundries and the like on the surface and inside of the equipment, keep the equipment clean, check the lubricating system regularly, replace the lubricating oil in time according to the oil quality, and ensure the lubricating effect.

[0029] The above is only the preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A movable protection mechanism for a positioning pin, characterized in that, include: Side plate (1) and movable plate (2). There are two sets of side plates (1). One set of side plates (1) has a positioning seat (3) installed on the inner side. The movable plate (2) has a positioning pin (4) installed on one side. The other set of side plates (1) has a cylinder (5) installed on the side and a telescopic rod (6) installed on the other side. A floating block (7) is fixed to the other end of the telescopic rod (6). A sliding groove (8) is opened on the outer side of the floating block (7). A fixed block (9) is fixed to the other side of the movable plate (2). A movable rod (10) is fixed to the outer side of the fixed block (9). A sliding block is provided on the inner side of the movable rod (10). The sliding block is adapted to the sliding groove (8). A first spring (11) is fixed between the sliding block and the sliding groove (8). A spring sleeve (12) is fixed between the floating block (7) and the fixed block (9).

2. The positioning pin movement protection mechanism according to claim 1, characterized in that, A guide rod (13) is fixed between the two sets of side plates (1). A guide hole (14) is opened on the side of the movable plate (2). A lubrication sleeve (15) is fixed on the outside of the guide hole (14). An oil outlet (16) is provided on the inside of the lubrication sleeve (15). An oil tank (17) is fixed on the side of the movable plate (2). A viewing window (18) is provided on the side of the oil tank (17). An oil pump (19) is installed between the oil tank (17) and the lubrication sleeve (15). An oil filling port (20) is provided above the oil tank (17).

3. The positioning pin movement protection mechanism according to claim 2, characterized in that, The guide rod (13) is adapted to and slidably connected to the guide hole (14), and a second spring (21) is installed at one end of the guide rod (13).

4. The positioning pin movement protection mechanism according to claim 1, characterized in that, Both sets of side plates (1) are fixedly connected to a support leg (22) below, and a base (23) is fixedly connected to the support leg (22).

5. The positioning pin movement protection mechanism according to claim 1, characterized in that, The number of the slide groove (8), the movable rod (10), the sliding block and the first spring (11) are all provided in four sets, which are symmetrically arranged around the sides of the floating block (7) and the fixed block (9).

6. The positioning pin movement protection mechanism according to claim 2, characterized in that, The number of oil outlets (16) is set in multiple sets and is evenly arranged around the inside of the lubrication sleeve (15). The number of oil outlet mechanisms composed of the lubrication sleeve (15), the oil outlets (16) and the oil pump (19) is set in two sets.

7. The positioning pin movement protection mechanism according to claim 3, characterized in that, The guide rod (13), the guide hole (14), and the second spring (21) are each provided in two sets.

8. The positioning pin movement protection mechanism according to claim 4, characterized in that, The number of the support legs (22) is set to four.

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