Mold copper core inclined ejector seat structure with inclined graphite column

Abstract

The mold copper core pitched roof seat structure with the inclined graphite column comprises an outer sleeve block, the outer sleeve block comprises a hollowed-out hole, a circle of annular groove is formed in the inner wall of the hollowed-out hole in a sunken mode, and annular protruding edges are formed on the edges of the two sides of the annular groove; the inner sphere is a copper block with a through hole, the outer wall of the inner sphere comprises two parallel cutting planes, the outer wall of the inner sphere between the two cutting planes is a convex spherical surface, and the annular groove is provided with a concave curved surface in surface contact with the convex spherical surface; the graphite column comprises an inclined graphite column, an included angle is formed between the normal of the contact position of the convex spherical surface and one end of the inclined graphite column and the axis of the inclined graphite column, the local edge of one end of the inclined graphite column forms an acute angle part on the convex spherical surface, and the acute angle part can be broken and stripped to form graphite particles. By adopting the inclined graphite column, a trace of graphite particles are generated when the inclined ejector seat works, so that lubrication is facilitated, and the rotation resistance is further reduced.

Description

Technical Field

[0001] The invention relates to the field of mold parts, and in particular to a mold copper core inclined top seat structure with inclined graphite columns. Background Art

[0002] The mold lifter is a mechanism used in mold design to form the internal hook of the product. It is suitable for relatively simple hook situations. The mold lifter can make the product inside the mold more smoothly when demolding and reduce the friction between the mold and the product. There is generally a lifter seat at the root of the mold lifter. The lifter seat plays a role of limiting and fixing, while retaining some mechanical freedom, so that the mold lifter can play a role.

[0003] Common inclined top seats all have rotational freedom. This rotatable movable connection method generally relies on a cam mechanism that is assembled with each other. The cam has a good load-bearing capacity, but the friction resistance is relatively large, and wear will occur during long-term use of the mold. Summary of the invention

[0004] The problem to be solved by the present invention is to provide a mold copper core inclined top seat structure with inclined graphite columns. By arranging the inclined graphite columns, a small amount of graphite particles are generated when the inclined top seat is working, which is convenient for lubrication and further reduces the rotational resistance.

[0005] In order to solve the above problems, the present invention provides a mold copper core inclined top seat structure with an inclined graphite column. In order to achieve the above purpose, the technical solution adopted by the present invention to solve its technical problems is:

[0006] A copper core inclined top seat structure of a mold with inclined graphite columns, comprising: an outer sleeve block, comprising a hollow hole, the inner wall of the hollow hole is recessed with a circle of annular groove, and the edges on both sides of the annular groove constitute annular convex edges; an inner sphere, which is a copper block with a through hole, the outer wall of the inner sphere comprises two parallel cut planes, the outer wall of the inner sphere between the two cut planes is a convex spherical surface, and the annular groove has a concave curved surface that realizes surface contact with the convex spherical surface; a graphite column, a plurality of graphite columns are buried on the convex spherical surface, and the number of graphite columns decreases along the direction approaching the cut plane; when the cut plane is perpendicular to the through direction of the hollow hole itself, the annular convex edges are in contact with the graphite column; the graphite column comprises an oblique graphite column, the normal line of the contact point between the convex spherical surface and one end of the oblique graphite column forms an angle with the axis of the oblique graphite column, and the local edge of one end of the oblique graphite column forms an acute angle portion on the convex spherical surface, and the acute angle portion can be broken, peeled off and form graphite particles.

[0007] The beneficial effect of adopting the above technical solution is: this technical solution designs a copper inner sphere, which can reduce the friction resistance when the inner sphere rotates, and the inclined top is fixed to it through a through hole, which can provide sufficient rotational freedom. First of all, the annular groove can play a good limiting effect, limiting the position of the inner ball head, but does not affect the rotational freedom of the inner sphere. The graphite column can further reduce the friction resistance. At the same time, the layout of the graphite column is also particular. The closer to the middle position, the more graphite columns there are, because the probability of friction contact in these places is greater. In addition, it is also guaranteed that there are graphite columns in contact with the annular ridges. The two sides of the concave annular groove will naturally form annular ridges. From a microscopic perspective, the positive angle structure of the annular ridges often has extrusion friction, so it is guaranteed that the graphite column is in contact with the annular ridges as much as possible, further reducing friction resistance. From another perspective, the life of the inclined top seat is also improved. At the same time, the copper inner sphere is relatively soft and has low extrusion friction resistance.

[0008] The special feature of this technical solution is the oblique graphite column. By breaking the conventional oblique layout, the graphite column with relatively straight ends is turned into oblique ends, similar to the cross-section effect formed by a samurai sword chopping bamboo obliquely. This cross-section has an acute angle. The acute angle has a relatively small structural strength because its end is relatively sharp. During the rotation of the inner sphere and the outer jacket block, the outer jacket block is easy to collide and squeeze the acute angle, causing the end of the acute angle to be slightly broken, and then peeled off into some microscopically fine graphite particles. These graphite particles can be retained between the inner sphere and the outer jacket block as a lubricant, further reducing the resistance during the rotation of the inclined top seat.

[0009] As a further improvement of the present invention, the graphite columns include straight graphite columns and oblique graphite columns, the normal line of the convex spherical surface at the contact point with one end of the straight graphite column coincides with the axis of the straight graphite column; the straight graphite columns and the oblique graphite columns are arranged alternately around the axis of the through hole.

[0010] The beneficial effect of adopting the above technical solution is that the inclined top seat has both straight graphite columns and inclined graphite columns, which complement each other and are arranged alternately and spaced apart to ensure that the graphite particles on the entire surface of the convex spherical surface are relatively uniform, thereby ensuring low resistance during the rotation of the inclined top seat.

[0011] As a further improvement of the present invention, the oblique graphite column has both ends located on the convex spherical surface, and the oblique graphite column also has one end located on the convex spherical surface and the other end located on the inner wall of the through hole.

[0012] The beneficial effect of adopting the above technical solution is that some oblique graphite columns can form two acute angles on the convex spherical surface, while others can form an acute angle on the convex spherical surface and the inner wall of the through hole, which makes the graphite particles on the convex spherical surface as large as possible and ensures that the graphite on the inner wall of the through hole can be maintained within a certain range.

[0013] As a further improvement of the present invention, a plurality of graphite columns which circle around the axis of the cutting plane itself constitute a graphite column group, and a plurality of graphite column groups are arranged on the inner sphere, and there are at least five graphite column groups; along the direction approaching the cutting plane, the number of graphite columns in each graphite column group gradually decreases.

[0014] The beneficial effect of adopting the above technical solution is that the arrangement of the graphite columns is planned, and no matter which direction the graphite columns rotate in, more graphite columns participate in the friction.

[0015] As a further improvement of the present invention, the diameters of all graphite columns are equal, and the diameter of the graphite columns is smaller than the width of the annular groove.

[0016] The beneficial effect of adopting the above technical solution is that the size specifications of the graphite columns are the same, but the distribution is sparse or dense.

[0017] As a further improvement of the present invention, the distances between adjacent graphite column groups are equal, and the distance between two adjacent graphite column groups is equal to half of the width of the annular groove.

[0018] The beneficial effects of adopting the above technical solution are: the graphite columns are relatively small in size and are densely distributed.

[0019] As a further improvement of the present invention, both ends of the through hole are located in the cut planes, and the distance between the two cut planes is equal to the through length of the hollow hole.

[0020] The beneficial effect of adopting the above technical solution is that the inner sphere is exactly buried in the hollow hole in the initial state.

[0021] As a further improvement of the present invention, the hollow hole of the outer sleeve block has an expansion pit extending radially outward, the two expansion pits are arranged in mirror symmetry, and the depth of the expansion pit is equal to the depth of the annular groove.

[0022] The beneficial effect of adopting the above technical solution is that the expansion pit reduces the difficulty of assembling the inner sphere and the outer sleeve block while ensuring the functionality of the annular groove.

[0023] As a further improvement of the present invention, the outer sleeve block is made of an integral steel material, and the outer sleeve block also has a through countersunk hole, and the through direction of the countersunk hole is parallel to the through direction of the hollow hole.

[0024] The beneficial effect of adopting the above technical solution is that the countersunk hole is used for bolts to pass through, which facilitates the fixation of the inclined top seat and the mold body.

[0025] As a further improvement of the present invention, the side elevation of the outer cover block is composed of a pair of convex curved surfaces and a pair of flat surfaces, and the intersection of the convex curved surface and the flat surface constitutes a positive angle.

[0026] The beneficial effect of adopting the above technical solution is that the overall profile of the inclined top seat is similar to the shape of the waist-shaped hole, and the two parallel flat surfaces also facilitate the accurate fixing direction of the inclined top seat and the mold when fixing them. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 is a perspective view of an embodiment of the present invention;

[0029] Figure 2 is a perspective view of an embodiment of the present invention;

[0030] Figure 3 is a stereoscopic view of an inner sphere according to an embodiment of the present invention;

[0031] Figure 4 is a three-dimensional diagram of a jacket block according to an embodiment of the present invention;

[0032] Figure 5 is a top view of a jacket block according to an embodiment of the present invention;

[0033] Figure 6 is an AA cross-sectional view of an embodiment of the present invention;

[0034] Figure 7 is a BB cross-sectional view of an embodiment of the present invention;

[0035] Figure 8 is a cross-sectional view of an inner sphere according to one embodiment of the present invention;

[0036] Fig. 9 is a cross-sectional view of an inner sphere according to one embodiment of the present invention;

[0037] Fig.10 It is a partial schematic diagram of a cross-sectional view of an inner sphere according to one embodiment of the present invention.

[0038] 1-outer sleeve; 2-inner sphere; 3-convex curved surface; 4-flat surface; 5-countersunk hole; 6-hollow hole; 7-expansion pit; 8-annular groove; 9-annular convex ridge; 10-through hole; 11-cut plane; 12-graphite column; 121-straight graphite column; 122-oblique graphite column; 1221-acute angle; 1222-graphite particle; 13-convex spherical surface. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with specific embodiments:

[0040] In order to achieve the purpose of the present invention, a mold copper core inclined top seat structure with an inclined graphite column includes: a jacket block 1, including a hollow hole 6, the inner wall of the hollow hole 6 is recessed with a circle of annular grooves 8, such as Figure 4 , Figure 7 As shown, the two side edges of the annular groove 8 constitute annular convex ridges 9; the inner sphere 2 is a copper block with a through hole 10, the outer wall of the inner sphere 2 includes two parallel cut planes 11, the outer wall of the inner sphere 2 between the two cut planes 11 is a convex spherical surface 13, and the annular groove 8 has a concave curved surface that realizes surface contact with the convex spherical surface 13; graphite columns 12, a plurality of graphite columns 12 are buried on the convex spherical surface 13, and the number of graphite columns 12 gradually decreases along the direction approaching the cut plane 11; when the cut plane 11 is perpendicular to the through direction of the hollow hole 6 itself, the annular convex ridges 9 are all in contact with the graphite columns 12.

[0041] like Fig. 9 As shown, the graphite column 12 includes an oblique graphite column 122, and the normal line at the contact point between the convex spherical surface 13 and one end of the oblique graphite column 122 forms an angle with the axis of the oblique graphite column 122, and the local edge of one end of the oblique graphite column 122 forms an acute angle portion 1221 on the convex spherical surface 13, as shown in FIG. Fig.10 As shown, the acute angle portion 1221 can be broken, peeled off and form graphite particles 1222.

[0042] The beneficial effect of adopting the above technical solution is: this technical solution designs a copper inner sphere, which can reduce the friction resistance when the inner sphere rotates, and the inclined top is fixed to it through a through hole, which can provide sufficient rotational freedom. First of all, the annular groove can play a good limiting effect, limiting the position of the inner ball head, but does not affect the rotational freedom of the inner sphere. The graphite column can further reduce the friction resistance. At the same time, the layout of the graphite column is also particular. The closer to the middle position, the more graphite columns there are, because the probability of friction contact in these places is greater. In addition, it is also guaranteed that there are graphite columns in contact with the annular ridges. The two sides of the concave annular groove will naturally form annular ridges. From a microscopic perspective, the positive angle structure of the annular ridges often has extrusion friction, so it is guaranteed that the graphite column is in contact with the annular ridges as much as possible, further reducing friction resistance. From another perspective, the life of the inclined top seat is also improved. At the same time, the copper inner sphere is relatively soft and has low extrusion friction resistance.

[0043] The special feature of this technical solution is the oblique graphite column. By breaking the conventional oblique layout, the graphite column with relatively straight ends is turned into oblique ends, similar to the cross-section effect formed by a samurai sword chopping bamboo obliquely. This cross-section has an acute angle. The acute angle has a relatively small structural strength because its end is relatively sharp. During the rotation of the inner sphere and the outer jacket block, the outer jacket block is easy to collide and squeeze the acute angle, causing the end of the acute angle to be slightly broken, and then peeled off into some microscopically fine graphite particles. These graphite particles can be retained between the inner sphere and the outer jacket block as a lubricant, further reducing the resistance during the rotation of the inclined top seat.

[0044] like Figure 3 As shown, in other embodiments of the present invention, a plurality of graphite columns 12 that circle around the axis of the cutting plane 11 constitute a graphite column group, and a plurality of graphite column groups are provided on the inner sphere 2, and there are at least five graphite column groups; along the direction approaching the cutting plane 11, the number of graphite columns 12 in each graphite column group gradually decreases.

[0045] In other embodiments of the present invention, Figure 8 and Fig. 9 As shown, the graphite column 12 includes a straight graphite column 121 and an oblique graphite column 122, and the normal line of the contact point between the convex spherical surface 13 and one end of the straight graphite column 121 coincides with the axis of the straight graphite column 121; the straight graphite column 121 and the oblique graphite column 122 are arranged alternately around the axis of the through hole 10.

[0046] On the one hand, the original graphite column 12 generally forms a perfect circle on the convex spherical surface 13. The oblique graphite column 122 forms an ellipse-like contour on the convex spherical surface 13, and the minor axis of the ellipse is equal to the diameter of the perfect circle, so the oblique graphite column 122 is exposed on the convex spherical surface 13. The larger graphite area is more convenient to provide good lubrication.

[0047] On the other hand, since the acute angle portion 1221 is relatively sharp, its natural structural strength is reduced, and it is easy to break into many microscopic graphite particles 1222. The vertical section of the acute angle portion 1221 has an acute angle at its top angle. The vertical section of one end of the oblique graphite column 122 has two top angles, one acute angle and one obtuse angle. The sum of the acute angle and the obtuse angle is almost 180°. Since the acute angle is located at a more external position, it is called the acute angle portion 1221.

[0048] In addition, the friction on the acute angle portion 1221 is different when rotating from different directions. If the rotation direction of the inner sphere 2 is the same as the pointing direction of the acute angle portion 1221, the tip of the acute angle portion 1221 is more likely to break out the graphite particles 1222.

[0049] The beneficial effect of adopting the above technical solution is that the inclined top seat has both straight graphite columns and inclined graphite columns, which complement each other and are arranged alternately and spaced apart to ensure that the graphite particles on the entire surface of the convex spherical surface are relatively uniform, thereby ensuring low resistance during the rotation of the inclined top seat.

[0050] In some other embodiments of the present invention, the oblique graphite column 122 has both ends located on the convex spherical surface 13 , or the oblique graphite column 122 has one end located on the convex spherical surface 13 and the other end located on the inner wall of the through hole 10 .

[0051] The oblique graphite column 122 has both ends located on the convex spherical surface 13, which is an outer oblique graphite column. The oblique graphite column 122 has one end located on the convex spherical surface 13 and the other end located on the inner wall of the through hole 10, which is an inner oblique graphite column. On the same side of the same section of the inner sphere 2, the axes of the outer oblique graphite column and the inner oblique graphite column are parallel to each other. Since they are in the same direction and parallel to each other, it is convenient to drill the inner sphere 2 as a copper blank during machining.

[0052] The beneficial effect of adopting the above technical solution is that some oblique graphite columns can form two acute angles on the convex spherical surface, while others can form an acute angle on the convex spherical surface and the inner wall of the through hole, which makes the graphite particles on the convex spherical surface as large as possible and ensures that the graphite on the inner wall of the through hole can be maintained within a certain range.

[0053] In other embodiments of the present invention, when the acute angle portion 1221 is not broken to produce graphite particles 1222, the surfaces of the ends of the straight graphite column 121 and the oblique graphite column 122 are flush with the convex spherical surface 13, and the surfaces of the ends of the straight graphite column 121 and the oblique graphite column 122 coincide with the convex spherical surface 13 on the same spherical surface.

[0054] The beneficial effect of adopting the above technical solution is that the arrangement of the graphite columns is planned, and no matter which direction the graphite columns rotate in, more graphite columns participate in the friction.

[0055] In some other embodiments of the present invention, the diameters of all graphite columns 12 are equal, and the diameter of the graphite column 12 is smaller than the width of the annular groove 8 .

[0056] The beneficial effect of adopting the above technical solution is that the size specifications of the graphite columns are the same, but the distribution is sparse or dense.

[0057] In some other embodiments of the present invention, the distances between adjacent graphite column groups are equal, and the distance between two adjacent graphite column groups is equal to half the width of the annular groove 8 .

[0058] The beneficial effects of adopting the above technical solution are: the graphite columns are relatively small in size and are densely distributed.

[0059] In some other embodiments of the present invention, both ends of the through hole 10 are located within the cut plane 11 , and the distance between the two cut planes 11 is equal to the through length of the hollow hole 6 .

[0060] The beneficial effect of adopting the above technical solution is that the inner sphere is exactly buried in the hollow hole in the initial state.

[0061] like Figure 4 , Figure 6 As shown, in some other embodiments of the present invention, the hollow hole 6 of the outer sleeve block 1 has an expansion pit 7 extending radially outward, the two expansion pits 7 are arranged in mirror symmetry, and the depth of the expansion pit 7 is equal to the depth of the annular groove 8.

[0062] The beneficial effect of adopting the above technical solution is that the expansion pit reduces the difficulty of assembling the inner sphere and the outer sleeve block while ensuring the functionality of the annular groove.

[0063] In some other embodiments of the present invention, the outer sleeve block 1 is made of an integral steel material, such as Figure 7 As shown, the outer sleeve block 1 further comprises a through countersunk hole 5 , and the through direction of the countersunk hole 5 is parallel to the through direction of the hollow hole 6 .

[0064] The beneficial effect of adopting the above technical solution is that the countersunk hole is used for bolts to pass through, which facilitates the fixation of the inclined top seat and the mold body.

[0065] In some other embodiments of the present invention, the side elevation of the outer sleeve block 1 is composed of a pair of convex curved surfaces 3 and a pair of flat surfaces 4, and the junction between the convex curved surfaces 3 and the flat surfaces 4 forms a positive angle.

[0066] The beneficial effect of adopting the above technical solution is that the overall profile of the inclined top seat is similar to the shape of the waist-shaped hole, and the two parallel flat surfaces also facilitate the accurate fixing direction of the inclined top seat and the mold when fixing them.

[0067] In order to express the rotational freedom of the inner sphere 2, Figure 2 compared to Figure 1 , Figure 2 The inner sphere 2 in the figure is rotated at a certain angle.

[0068] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A mold copper core inclined top seat structure with inclined graphite columns, characterized in that: include: The outer sleeve block comprises a hollow hole, the inner wall of the hollow hole is sunken with a circle of annular groove, and the two side edges of the annular groove constitute annular convex ridges; The inner sphere is a copper block with a through hole, the outer wall of the inner sphere includes two parallel cut planes, the outer wall of the inner sphere between the two cut planes is a convex spherical surface, and the annular groove has a concave curved surface that is in surface contact with the convex spherical surface; Graphite columns, a plurality of graphite columns are embedded on the convex spherical surface, and the number of the graphite columns gradually decreases along the direction close to the cut plane; when the cut plane is perpendicular to the through-going direction of the hollow hole itself, the annular convex edges are all in contact with the graphite columns; The graphite column includes an oblique graphite column, the normal line of the contact point between the convex spherical surface and one end of the oblique graphite column forms an angle with the axis of the oblique graphite column, and the local edge of one end of the oblique graphite column forms an acute angle portion on the convex spherical surface, and the acute angle portion can be broken, peeled off and formed into graphite particles.

2. The mold copper core inclined top seat structure with inclined graphite columns according to claim 1, characterized in that: The graphite columns include straight graphite columns and oblique graphite columns. The normal line of the contact point between the convex spherical surface and one end of the straight graphite column coincides with the axis of the straight graphite column. The straight graphite columns and the oblique graphite columns are arranged alternately around the axis of the through hole.

3. The mold copper core inclined top seat structure with inclined graphite columns according to claim 1, characterized in that: The oblique graphite column has two ends both located on the convex spherical surface, and the oblique graphite column also has one end located on the convex spherical surface and the other end located on the inner wall of the through hole.

4. The mold copper core inclined top seat structure with inclined graphite columns according to claim 1, characterized in that: A number of graphite columns that circle around the axis of the cut plane form a graphite column group. The inner sphere is provided with a number of graphite column groups, and there are at least five graphite column groups. As the number of graphite columns in each graphite column group decreases in the direction close to the cut plane.

5. The mold copper core inclined top seat structure with inclined graphite columns according to claim 4 is characterized in that: The diameters of all graphite columns are equal, and the diameter of the graphite columns is smaller than the width of the annular groove.

6. The mold copper core inclined top seat structure with inclined graphite columns according to claim 5, characterized in that: The distances between adjacent graphite column groups are equal, and the distance between two adjacent graphite column groups is equal to half of the width of the annular groove.

7. The mold copper core inclined top seat structure with inclined graphite columns according to claim 1, characterized in that: Both ends of the through hole are located in the cut plane, and the distance between the two cut planes is equal to the through length of the hollow hole.

8. The mold copper core inclined top seat structure with inclined graphite columns according to claim 1, characterized in that: The hollow hole of the outer sleeve block is provided with an expansion pit extending radially outward, the two expansion pits are arranged in mirror symmetry, and the depth of the expansion pit is equal to the depth of the annular groove.

9. The mold copper core inclined top seat structure with inclined graphite columns according to claim 1, characterized in that: The outer sleeve block is made of an integral steel material and is also provided with a through countersunk hole, wherein the through direction of the countersunk hole is parallel to the through direction of the hollow hole.

10. The mold copper core inclined top seat structure with inclined graphite columns according to claim 9, characterized in that: The side elevation of the outer sleeve block is composed of a pair of convex curved surfaces and a pair of flat surfaces, and the junction of the convex curved surface and the flat surface forms a positive angle.

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