Floating pin action and mold

Abstract

The utility model discloses a kind of floating pin movable mechanism and mould, floating pin movable mechanism includes inclined guide pillar, one end has hemispherical end, inclined guide pillar has two straight grooves, two straight grooves are symmetrically arranged along the axis of inclined guide pillar, linear convex rib is formed between two straight grooves;Floating pin, two floating pins are symmetrically distributed in the two sides of inclined guide pillar, two floating pins have the elasticity of approaching each other, the opposite end of two floating pins has hemispherical part, floating pin surface is provided with the plane of being flattened parallel with its axis, the cross section profile of floating pin at the place where plane of being flattened is arch;Wherein, one end of straight groove and hemispherical end meet;Plane of being flattened can be slidably contacted with straight groove. Adopt the utility model to make inclined guide pillar and floating pin respectively through spherical surface contact, to reduce friction when contacting, and prevent autorotation using the sliding fit of plane of being flattened and straight groove, improve the stability of floating pin.

Description

Technical Field

[0001] This utility model relates to the field of mold components, specifically to a floating pin movable mechanism and a mold. Background Technology

[0002] In existing molds, floating pins and inclined guide pillars are often used to drive the slider to meet the requirements of terminal insertion, product support, etc., and to ensure smooth mold opening and closing processes.

[0003] In existing molds, the pins and guide pillars mostly have inclined contact, resulting in high frictional resistance and a tendency to jam, leading to breakage of the inclined guide pillars or scratches on the surface of the floating pins. Moreover, the motion stability is poor, and the floating pins are prone to reset and failure after mold closing, affecting the movement of the slider when the mold opens. Therefore, it is sometimes necessary to have a fitter grind and maintain it, which increases maintenance costs and is difficult to adapt to the high efficiency and stability requirements of mass production. Utility Model Content

[0004] The problem to be solved by this utility model is to provide a floating pin moving mechanism and mold.

[0005] To solve the above problems, on the one hand, this utility model provides a floating pin moving mechanism. To achieve the above objectives, the technical solution adopted by this utility model to solve its technical problems is as follows: A floating pin mechanism includes: an inclined guide post with a hemispherical end at one end, the inclined guide post having two straight grooves symmetrically arranged along the axis of the inclined guide post, forming a straight ridge between the two straight grooves; and two floating pins symmetrically distributed on both sides of the inclined guide post, the two floating pins having an elastic force that moves towards each other, the opposing ends of the two floating pins having hemispherical portions, the surface of the floating pin having a chamfered plane parallel to its own axis, the cross-sectional profile of the floating pin at the chamfered plane being arc-shaped; wherein, one end of the straight groove intersects with the hemispherical end; and the chamfered plane can slide in contact with the straight groove.

[0006] As a further improvement of this utility model, one end of the cut surface intersects with the hemisphere, and the other end of the cut surface forms a stepped surface, which is perpendicular to the axis of the floating pin.

[0007] As a further improvement of this utility model, the inner wall of the straight groove includes a first inner wall surface and a second inner wall surface that are perpendicular to each other. The second inner wall surfaces of the two straight grooves together form the two side walls of the straight protrusion. The shaving plane of the floating pin is in sliding contact with the first inner wall surface.

[0008] As a further improvement of this utility model, the widths of the first inner wall surface and the second inner wall surface are both smaller than the radius of the inclined guide post, and the diameter of the inclined guide post is larger than the diameter of the floating pin.

[0009] As a further improvement of this utility model, the width of the cut surface is smaller than the diameter of the floating pin, and the radius of the floating pin is larger than the width of the first inner wall surface.

[0010] As a further improvement of this utility model, one end of the floating pin has a blind hole, and a compression spring is fitted into the blind hole, which provides elastic force to the floating pin.

[0011] As a further improvement of this utility model, the inclined guide post and the floating pin are jointly surrounded by a surrounding block. The surrounding block has a receiving groove for accommodating the inclined guide post, and the inner wall of the receiving groove is connected to a receiving hole. The floating pin is movably assembled with the receiving hole.

[0012] As a further improvement of this utility model, the opening contours of the two receiving holes facing each other are arc-shaped, and the opening contours of the two receiving holes facing away from each other are circular.

[0013] As a further improvement of this utility model, the surrounding block is fitted with a fixing plate by screws, and the fixing plate is in contact with one end of the compression spring.

[0014] On the other hand, a mold includes the aforementioned floating pin mechanism.

[0015] The beneficial technical effects of adopting the floating pin mechanism of this application are: In this mechanism, the hemispherical end of the inclined guide post and the hemispherical part of the floating pin form a spherical contact. Compared with the inclined contact between the pin and the guide post in traditional molds, the frictional resistance is greatly reduced, which can effectively avoid movement jamming, reduce the problem of inclined guide post breakage or floating pin surface scratches, ensure smooth mold opening and closing process, and meet the basic functional requirements such as terminal implantation and product support.

[0016] The two straight grooves of the inclined guide post are symmetrically arranged along the axis, and two floating pins are synchronously and symmetrically distributed on both sides of the inclined guide post. The cut surface of the floating pin can slide with the straight groove. This symmetrical structure and sliding limit design can limit the rotation of the floating pin, improve the motion stability, avoid the floating pin failing to reset due to rotation after mold closing, and ensure reliable slider action when the mold opens.

[0017] The corresponding structure of the straight groove and the straight convex edge, the bow-shaped cross-section design of the floating pin, and the dual function of spherical contact and sliding limit make the force on the mechanism more uniform, reduce local stress concentration, ensure the structural durability of the inclined guide column and the floating pin, and are more suitable for the high efficiency and stability requirements of mass production. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of one embodiment of the floating pin movable mechanism of this utility model; Figure 2 This is a perspective view of one embodiment of the floating pin movable mechanism of this utility model; Figure 3 This is an assembly drawing of the inclined guide column and floating pin in one embodiment of the floating pin movable mechanism of this utility model; Figure 4 This is an assembly drawing of the inclined guide column and floating pin in one embodiment of the floating pin movable mechanism of this utility model; Figure 5 This is a perspective view of a floating pin, representing one embodiment of the floating pin mechanism of this utility model. Figure 6 This is a perspective view of a floating pin, representing one embodiment of the floating pin mechanism of this utility model.

[0020] 1- Inclined guide post; 101- Straight groove; 1011- First inner wall surface; 1012- Second inner wall surface; 102- Straight convex ridge; 103- Hemispherical end; 104- Enlarged end; 2- Floating pin; 201- Chamfered surface; 202- Blind hole; 203- Stepped surface; 204- Hemispherical part; 3- Enclosing block; 301- Receiving groove; 302- Receiving hole; 3021- Concave curved inner wall; 3022- Flat inner wall; 4- Fixing plate; 5- Screw; 6- Compression spring. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to specific embodiments: To achieve the purpose of this utility model, please refer to Figures 1 to 6A floating pin mechanism includes: an inclined guide post 1, one end of which has a hemispherical end 103; the inclined guide post 1 has two straight grooves 101, which are symmetrically arranged along the axis of the inclined guide post 1, and the length direction of the straight grooves 101 is parallel to the axis of the inclined guide post 1; the two straight grooves 101 form a straight protrusion 102 between each other. Two floating pins 2 are symmetrically distributed on both sides of the inclined guide post 1, and the axes of the floating pins 2 are perpendicular to the axis of the inclined guide post 1. The two floating pins 2 have an elastic force that moves towards each other, and the opposing ends of the two floating pins 2 have hemispherical portions 204. The surface of the floating pin 2 is provided with a chamfered plane 201 parallel to its own axis, and the cross-sectional profile of the floating pin 2 at the chamfered plane 201 is arc-shaped. One end of the straight groove 101 intersects with the hemispherical end 103. The chamfered plane 201 can slide in contact with the inner wall of the straight groove 101.

[0022] For ease of understanding, Figure 1 and Figure 2 middle, Figure 1 The image shows the state of floating pin 2 extended forward, while... Figure 2 The image shows the retracted state of floating pin 2. Figure 1 That is, the state before the mold is opened. Figure 2 This refers to the mold closing state. During the mold closing process, floating pin 2 will slowly return to its original position.

[0023] To further demonstrate its internal structure, and Figure 1 and Figure 2 compared to, Figure 3 and Figure 4 This hides the surrounding block 3.

[0024] The beneficial effects of adopting the above technical solution are: the contact force surface of the floating pin 2 is a spherical surface, that is, the hemispherical part 204 of the floating pin 2. When the mold is closed, the spherical surfaces are in contact with each other, that is, the hemispherical part 204 of the floating pin 2 is in contact with the hemispherical end 103 of the inclined guide post 1.

[0025] The floating pin 2 is cylindrical in shape, and its design ensures a smooth surface that is less prone to jamming. To avoid the potential rotation of a cylinder, a portion of the floating pin 2 is chamfered for positioning, forming a chamfered surface 201. The chamfered stepped surface 203 is used for stroke limitation. This fully utilizes the two mutually perpendicular surfaces formed after chamfering. When the inclined guide pin 1 is pressed down, there is spherical friction between spherical surfaces, resulting in low resistance and preventing jamming.

[0026] This design ensures smooth movement of the inclined guide post 1 and the floating pin 2, preventing scratches. The shape of the inclined guide post 1 and the floating pin 2 also makes them resistant to bending and breakage. The inclined guide post 1 and the floating pin 2 exhibit good stability in mass production.

[0027] In some other embodiments of this utility model, one end of the cut surface 201 intersects with the hemispherical portion 204, and the other end of the cut surface 201 forms a stepped surface 203, which is perpendicular to the axis of the floating pin 2.

[0028] Both hemispherical portion 204 and hemispherical end 103 represent a spatial shape that is hemispherical in shape as a whole.

[0029] The beneficial effects of adopting the above technical solution are: ensuring a smooth transition of spherical contact, and forming a stepped surface 203 at the other end to provide mechanical limit, preventing excessive movement of the floating pin 2, and enhancing the reliability of mechanism reset.

[0030] like Figure 3 As shown, in some other embodiments of the present invention, the inner wall of the straight groove 101 includes a first inner wall surface 1011 and a second inner wall surface 1012 that are perpendicular to each other. The second inner wall surfaces 1012 of the two straight grooves 101 together form the two side walls of the straight protrusion 102. The shaving plane 201 of the floating pin 2 is in sliding contact with the first inner wall surface 1011.

[0031] In addition, the end of the inclined guide post 1 away from the hemispherical end 103 has an enlarged end 104.

[0032] The beneficial effects of adopting the above technical solution are: providing precise guidance, avoiding the floating pin 2 from deviating or getting stuck, while the second inner wall surface 1012 on both sides of the straight protrusion 102 enhances the structural rigidity and ensures the stability of the motion trajectory.

[0033] In some other embodiments of this utility model, the widths of the first inner wall surface 1011 and the second inner wall surface 1012 are both smaller than the radius of the inclined guide post 1, and the diameter of the inclined guide post 1 is larger than the diameter of the floating pin 2.

[0034] The beneficial effects of adopting the above technical solution are: optimizing the tank structure, the diameter of the inclined guide post 1 being larger than the diameter of the floating pin 2 makes the force distribution more reasonable, reduces local stress concentration, and improves the durability of the parts.

[0035] In some other embodiments of this utility model, the width of the cut surface 201 is smaller than the diameter of the floating pin 2, and the radius of the floating pin 2 is larger than the width of the first inner wall surface 1011.

[0036] The beneficial effects of adopting the above technical solution are: ensuring a moderate sliding contact area, reducing frictional resistance, maintaining guiding accuracy, and extending the service life of the mechanism.

[0037] In other embodiments of this utility model, such as Figure 6 As shown, one end of the floating pin 2 has a blind hole 202, as... Figure 3 As shown, the blind hole 202 is fitted with a compression spring 6, which provides elastic force to the floating pin 2.

[0038] Compression spring 6 is a MISUMI standard linear spring.

[0039] The beneficial effect of adopting the above technical solution is that the floating pin 2 obtains continuous elastic force through the compression spring 6 in the blind hole 202, and the blind hole 202 provides an assembly position for the compression spring 6.

[0040] like Figure 1 , Figure 2 As shown, in some other embodiments of this utility model, the inclined guide post 1 and the floating pin 2 are jointly enclosed by a surrounding block 3. The surrounding block 3 has a receiving groove 301 for accommodating the inclined guide post 1. The two sides of the inner wall of the receiving groove 301 are connected to receiving holes 302. The floating pin 2 is movably assembled with the receiving holes 302.

[0041] The beneficial effects of adopting the above technical solution are: providing overall support and protection, preventing external interference, accommodating the floating pin 2 of the movable assembly hole 302, and enhancing the rigidity of the mechanism.

[0042] like Figure 2 As shown, in some other embodiments of this utility model, the opposing opening contours of the two receiving holes 302 are arc-shaped, and the opposing opening contours of the two receiving holes 302 are circular.

[0043] The arc shape of the opposing opening profiles of the two receiving holes 302 is a superior arc arc shape, and the arc shape of the cross section profile of the floating pin 2 at the location of the cut plane 201 is also a superior arc arc shape.

[0044] like Figure 2 As shown, the inner walls of the opposing openings of the two receiving holes 302 have a concave curved inner wall 3021 and a straight inner wall 3022. The concave curved inner wall 3021 slides in contact with the convex curved surface in the side of the floating pin 2, and the straight inner wall 3022 slides in contact with the cut surface 201.

[0045] The beneficial effects of adopting the above technical solution are: the bow-shaped opening profile matches the bow-shaped cross section of the floating pin 2, ensuring smooth sliding, and the opposite circular opening facilitates the installation and positioning of the part of the floating pin 2 whose cross section is circular.

[0046] like Figure 1 , Figure 3 As shown, in some other embodiments of this utility model, the surrounding block 3 is fitted with a fixing plate 4 by screws 5, and the fixing plate 4 is in contact with one end of the compression spring 6.

[0047] To clearly demonstrate compression spring 6, Figure 4 Only one fixed plate 4 is shown in the image.

[0048] The beneficial effects of adopting the above technical solution are: the fixed plate 4 contacts one end of the compression spring 6, ensuring that the elastic force is applied stably and is adjustable, which facilitates maintenance and replacement.

[0049] A mold comprising the aforementioned floating pin mechanism.

[0050] The beneficial effects of adopting the above technical solution are: the mold adopts the above floating pin moving mechanism, inheriting its advantages of low friction, high stability and long service life, thereby improving the mold's operational reliability and production efficiency under mass production conditions.

[0051] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A floating pin mechanism, characterized in that, include: An inclined guide post has a hemispherical end at one end and two straight grooves. The two straight grooves are symmetrically arranged along the axis of the inclined guide post, and a straight ridge is formed between the two straight grooves. Two floating pins are symmetrically distributed on both sides of the inclined guide post. The two floating pins have elastic forces that move towards each other. The opposing ends of the two floating pins have hemispherical parts. The surface of the floating pin is provided with a cut plane parallel to its own axis. The cross-sectional profile of the floating pin at the location of the cut plane is arc-shaped. Wherein, one end of the straight groove intersects with the hemispherical end; The cut surface can slide in contact with the straight groove.

2. The floating pin mechanism according to claim 1, characterized in that: One end of the cut surface intersects with the hemisphere, and the other end of the cut surface forms a stepped surface, which is perpendicular to the axis of the floating pin.

3. The floating pin mechanism according to claim 1, characterized in that: The inner wall of the straight groove includes a first inner wall surface and a second inner wall surface that are perpendicular to each other. The second inner wall surfaces of the two straight grooves together form the two side walls of the straight protrusion. The cleaved plane of the floating pin is in sliding contact with the first inner wall surface.

4. The floating pin mechanism according to claim 3, characterized in that: The widths of both the first and second inner wall surfaces are smaller than the radius of the inclined guide post, and the diameter of the inclined guide post is larger than the diameter of the floating pin.

5. The floating pin mechanism according to claim 3, characterized in that: The width of the cut surface is less than the diameter of the floating pin, and the radius of the floating pin is greater than the width of the first inner wall surface.

6. The floating pin mechanism according to claim 1, characterized in that: One end of the floating pin has a blind hole, and a compression spring is fitted into the blind hole, which provides elastic force to the floating pin.

7. The floating pin mechanism according to claim 6, characterized in that: The inclined guide post and the floating pin are both surrounded by a surrounding block. The surrounding block has a receiving groove for accommodating the inclined guide post. The inner wall of the receiving groove is connected to a receiving hole. The floating pin is movably assembled with the receiving hole.

8. The floating pin mechanism according to claim 7, characterized in that: The opposing openings of the two receiving holes have an arc-shaped profile, while the opposing openings of the two receiving holes have a circular profile.

9. The floating pin mechanism according to claim 7, characterized in that: The surrounding block is fitted with a fixing plate by screws, and the fixing plate is in contact with one end of the compression spring.

10. A mold, characterized in that: Includes the floating pin mechanism as described in any one of claims 1 to 9.

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