Rotary-cut split type sliding block positioning mechanism for stretching product

Abstract

The utility model discloses a rotary-cut split type sliding block positioning mechanism of a stretched product, which comprises an outer wrapping cylinder provided with a hollow cavity; a plurality of inclined sliding blocks are movably assembled in the hollow cavity, the inclined sliding blocks are arranged in an annular array around the axis of the outer wrapping cylinder, the inclined sliding blocks make contact with the hollow cavity through inclined planes, the inclined planes enable the width of the cross section of the hollow cavity to be gradually changed in the axial direction, and the inclined sliding blocks jointly define a through cavity; the central column is positioned in the through cavity; a first interval limiting part is arranged between the central column and the inclined sliding block, and a second interval limiting part is arranged between the inclined sliding block and the outer wrapping cylinder; the axial movement length of the central column and the inclined sliding block allowed by the first interval limiting part is larger than the axial movement length of the inclined sliding block and the outer wrapping cylinder allowed by the second interval limiting part. By the adoption of the stamping die, smooth stripping of stamped workpieces is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to punch mould field, concretely relates to a kind of positioning mechanism of split body type slide block of stretch product. BACKGROUND

[0002] Punching product needs to be stripped after stamping deformation is completed.Sometimes due to the shaking of punch or product defect, it can cause product scratch, poor stripping and other situations.The main reason is that the gap when opening mould is often not enough, which can cause the above-mentioned situation in some cases.But at the same time, the gap cannot be too large, and the size precision of mould must be guaranteed, otherwise the shape and size quality of stamping product is not good. SUMMARY

[0003] The utility model provides a kind of positioning mechanism of split body type slide block of stretch product, to facilitate the smooth stripping of stamping workpiece.

[0004] To solve the above problem, the utility model provides a kind of positioning mechanism of split body type slide block of stretch product, to achieve the above-mentioned purpose, the technical scheme that the utility model solves its technical problems is as follows:

[0005] A kind of positioning mechanism of split body type slide block of stretch product, comprising: outer sleeve, itself has hollow cavity;Oblique slide block, several oblique slide blocks are movably assembled in hollow cavity, oblique slide block is arranged in annular array around the axis of outer sleeve, oblique slide block and hollow cavity have between through inclined surface contact, the width of the cross section of hollow cavity gradually changes along the axial direction by inclined surface, oblique slide block collectively encloses through cavity;Center column, center column is located in through cavity;Wherein, center column and oblique slide block have first interval limiting portion between each other, oblique slide block and outer sleeve have second interval limiting portion between each other;First interval limiting portion can limit the axial displacement of center column and oblique slide block, second interval limiting portion can limit the axial displacement of oblique slide block and outer sleeve, the axial movement length of center column and oblique slide block allowed by first interval limiting portion is greater than the axial movement length of oblique slide block and outer sleeve allowed by second interval limiting portion.

[0006] The beneficial effects of the above technical scheme are: the oblique slide block in the technical scheme can clamp and relax workpiece, the outward movement of oblique slide block is similar to petal unfolding, because inclined surface can make the relative movement of oblique slide block and outer sleeve can be divided into a part of axial movement and a part of radial movement, radial movement can enlarge the gap between slide block and workpiece, so as to facilitate the smooth stripping of workpiece after stamping, and avoid scratching.

[0007] In addition, the second interval limiting portion is to limit the relative axial movement of oblique slide block and outer sleeve, limit the most retracted and most expanded state of oblique slide block.

[0008] And the first interval limit part in the activity interval is relatively large, that is, the axial displacement of the center column can be larger, and the second interval limit part means that as long as the inclined slider is fully released from the workpiece, the remaining is mainly relied on the action of the first interval limit part to make the center column fully move axially, so as to completely discharge the workpiece.

[0009] As a further improvement of the utility model, the center column has a radially outward protruding radial protrusion, the inclined slider has an inner groove, and the radially protruding radial protrusion and the inner groove are movably assembled to form a first interval limit part; the inclined slider has an outer groove, and the inclined slider and the outer sleeve have a cross beam block therebetween, and the cross beam block and the outer groove are movably assembled to form a first interval limit part; the length of the inner groove along the axial direction of the outer sleeve is greater than the length of the outer groove along the axial direction of the outer sleeve.

[0010] The beneficial effects of the above technical scheme are: the concave-convex engagement structure is used to limit the limit position in the axial direction.

[0011] As a further improvement of the utility model, the number of radial protrusions, cross beam blocks and inclined sliders is equal, and the cross beam blocks are clamped with the inner wall of the hollow cavity.

[0012] The beneficial effects of the above technical scheme are: the cross beam block is convenient to disassemble.

[0013] As a further improvement of the utility model, the cross section profile of the cross beam block is a rounded rectangle.

[0014] The beneficial effects of the above technical scheme are: the outer wall of the cross beam block makes the inclined slider and the outer sleeve not easy to loosen at the limit position, and also makes it can withstand many times of limiting impact, and is convenient for long-term use on the mold.

[0015] As a further improvement of the utility model, one side of the inclined slider facing the outer sleeve has a plurality of outer wall inclined lines, the hollow cavity has a plurality of inner wall inclined lines, and the outer wall inclined lines and the inner wall inclined lines are parallel to each other.

[0016] The beneficial effects of the above technical scheme are: the outer wall inclined lines and the inner wall inclined lines play a guiding role, and ensure that each inclined slider only moves in its own inclined direction.

[0017] As a further improvement of the utility model, a plurality of adjacent outer wall inclined lines in the same inclined slider form a female corner or a male corner, and a plurality of adjacent inner wall inclined lines in the hollow cavity form a female corner or a male corner.

[0018] The beneficial effects of the above technical scheme are: the male corner of the inclined slider and the female corner of the outer sleeve movably engage with each other, and the female corner of the inclined slider and the male corner of the outer sleeve movably engage with each other. Ensure the relative stability of the inclined slider.

[0019] As further improvement of the present application, the outer sleeve is provided with a gas hole communicating with the hollow cavity, and one end of the gas hole is located on the outer wall of the outer sleeve.

[0020] The beneficial effect of the above technical solution is that the gas hole is used to balance the pressure difference between the inside and outside in order to avoid the internal negative pressure from hindering the movement during the movement of the inclined sliding block.

[0021] As further improvement of the present application, the outer sleeve is provided with a gas hole communicating with the hollow cavity, and one end of the gas hole is located on the outer wall of the outer sleeve.

[0022] The beneficial effect of the above technical solution is that the gas hole is used to balance the pressure difference between the inside and outside in order to avoid the internal negative pressure from hindering the movement during the movement of the inclined sliding block.

[0023] As further improvement of the present application, the outer sleeve is provided with a gas hole communicating with the hollow cavity, and one end of the gas hole is located on the outer wall of the outer sleeve.

[0024] The beneficial effect of the above technical solution is that the gas hole is used to balance the pressure difference between the inside and outside in order to avoid the internal negative pressure from hindering the movement during the movement of the inclined sliding block.

[0025] As further improvement of the present application, the outer sleeve is provided with a gas hole communicating with the hollow cavity, and one end of the gas hole is located on the outer wall of the outer sleeve.

[0026] The beneficial effect of the above technical solution is that the gas hole is used to balance the pressure difference between the inside and outside in order to avoid the internal negative pressure from hindering the movement during the movement of the inclined sliding block. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0028] Figure 1 is a perspective view of one embodiment of the present application;

[0029] Figure 2 is a perspective view of one embodiment of the present application;

[0030] Figure 3 is a top view of one embodiment of the present application;

[0031] Figure 4 is a top view of one embodiment of the present application;

[0032] Figure 5 is an A-A sectional view of one embodiment of the present application;

[0033] Figure 6 is a B-B sectional view of an embodiment of the utility model;

[0034] Figure 7 is an explosion drawing of an embodiment of the utility model;

[0035] Figure 8 is an application schematic drawing of an embodiment of the utility model;

[0036] Figure 9 is an application schematic drawing of an embodiment of the utility model.

[0037] 1 - ejector rod;11 - flange;2 - gasket;21 - center hole;3 - outer sleeve;31 - flat surface;32 - hollow cavity;33 - air hole;34 - inner wall inclined edge;4 - cross beam block;5 - inclined sliding block;51 - inner groove;52 - outer groove;53 - through cavity;54 - outer wall inclined edge;6 - center column;61 - convex;62 - radial convex block;7 - gap;8 - workpiece. DETAILED DESCRIPTION

[0038] The utility model will be further explained in detail below in combination with specific embodiments:

[0039] In order to achieve the purpose of the utility model, as shown in Figure 7 A rotary cutting split type sliding block positioning mechanism of a stretch product, comprising: an outer sleeve 3, which has a hollow cavity 32; inclined sliding blocks 5, a plurality of inclined sliding blocks 5 are movably assembled in the hollow cavity 32, the inclined sliding blocks 5 are arranged in an annular array around the axis of the outer sleeve 3, the inclined sliding blocks 5 and the hollow cavity 32 have a slope surface contact therebetween, the slope surface causes the cross-sectional width of the hollow cavity 32 to gradually change along the axial direction, and the inclined sliding blocks 5 collectively enclose a through cavity 53; a center column 6, which is located in the through cavity 53; wherein, the center column 6 and the inclined sliding blocks 5 have a first interval limiting portion therebetween, and the inclined sliding blocks 5 and the outer sleeve 3 have a second interval limiting portion therebetween; the first interval limiting portion can limit the axial displacement of the center column 6 and the inclined sliding blocks 5, the second interval limiting portion can limit the axial displacement of the inclined sliding blocks 5 and the outer sleeve 3, and the axial movement length of the center column 6 and the inclined sliding blocks 5 allowed by the first interval limiting portion is greater than the axial movement length of the inclined sliding blocks 5 and the outer sleeve 3 allowed by the second interval limiting portion.

[0040] As shown in Figure 2 In the mold opening state, the ejector rod 1 is ejected, and the split type inclined sliding blocks 5 are expanded, so that a gap 7 with a single side gap of at least 0.2 mm can be finally formed.

[0041] When the inclined sliding blocks 5 descend, the inclined sliding blocks 5 also approach radially, and the inclined sliding blocks 5 clamp the workpiece 8 to achieve positioning. The product can be accurately positioned, facilitating smooth production and reducing the risk of mold damage and abnormal quality of the workpiece 8.

[0042] The inclined sliding blocks in the technical solution can clamp and release the workpiece, and the outward movement of the inclined sliding blocks is similar to the unfolding of a petal. Because the inclined surface allows the relative movement between the inclined sliding blocks and the outer sleeve to be divided into axial movement and radial movement, the radial movement can enlarge the gap between the sliding blocks and the workpiece, thereby facilitating smooth material removal of the workpiece after stamping and avoiding scratches. In addition, the second interval limiting part limits the relative axial movement between the inclined sliding blocks and the outer sleeve to the maximum interval, limiting the most retracted and most expanded states of the inclined sliding blocks. The relatively large active interval in the first interval limiting part means that the axial displacement of the center column can be larger, and the second interval limiting part means that the center column can move axially sufficiently to completely discharge the workpiece after the inclined sliding blocks fully release the workpiece.

[0043] As shown in Figure 6 In some other embodiments of the present application, the center column 6 has a radially outwardly protruding radial protrusion 62, the inclined sliding block 5 has an inner groove 51, and the radially protruding radial protrusion 62 and the inner groove 51 are movably assembled to form a first interval limiting part. The inclined sliding block 5 has an outer groove 52, and the inclined sliding block 5 and the outer sleeve 3 have a cross beam block 4 therebetween. The cross beam block 4 and the outer groove 52 are movably assembled to form a first interval limiting part. The length of the inner groove 51 along the axis of the outer sleeve 3 is greater than the length of the outer groove 52 along the axis of the outer sleeve 3.

[0044] The use of the concave-convex engagement structure to limit the extreme position in the axial direction has the beneficial effect.

[0045] In some other embodiments of the present application, the number of radial protrusions 62, cross beam blocks 4, and inclined sliding blocks 5 is equal, and the cross beam block 4 is connected to the inner wall of the hollow cavity 32.

[0046] The number of cross beam blocks 4 and inclined sliding blocks 5 can be four.

[0047] The cross beam block is convenient to disassemble.

[0048] In some other embodiments of the present application, the cross section of the cross beam block 4 is a rounded rectangle.

[0049] The outer wall of the cross beam block makes it difficult for the inclined sliding block and the outer sleeve to come off at the extreme position, and allows it to withstand many times of limiting impact, facilitating long-term use on the mold.

[0050] In some other embodiments of the utility model, one side of inclined sliding block 5 towards outer sleeve 3 has several outer wall inclined lines 54, hollow cavity 32 has several inner wall inclined lines 34, and outer wall inclined lines 54 and inner wall inclined lines 34 are parallel to each other.

[0051] Outer wall inclined lines 54 make the cross-sectional profile of inclined sliding block 5 form a convex shape.

[0052] The beneficial effects of the above technical solution are that outer wall inclined lines and inner wall inclined lines play a guiding role, ensuring that each inclined sliding block moves only in its own inclined direction.

[0053] In some other embodiments of the utility model, several adjacent outer wall inclined lines 54 in the same inclined sliding block 5 form a female corner or a male corner, and several adjacent inner wall inclined lines 34 in hollow cavity 32 form a female corner or a male corner.

[0054] Three adjacent outer wall inclined lines 54 or inner wall inclined lines 34 can form a right-angle female corner or a right-angle male corner.

[0055] The beneficial effects of the above technical solution are that the male corner of the inclined sliding block and the female corner of the outer sleeve move and engage with each other, and the female corner of the inclined sliding block and the male corner of the outer sleeve move and engage with each other, ensuring the relative stability of the inclined sliding block.

[0056] In some other embodiments of the utility model, outer sleeve 3 has a gas permeation hole 33 communicating with hollow cavity 32, and one end of gas permeation hole 33 is located on the outer wall of outer sleeve 3.

[0057] The beneficial effects of the above technical solution are that in order to avoid internal negative pressure hindering movement during the movement of the inclined sliding block, gas permeation hole is used to balance the internal and external pressure difference.

[0058] In some other embodiments of the utility model, along the axis of the gradually narrowing cross-sectional width of hollow cavity 32, the shaft end of center column 6 also has coaxial contact with top rod 1.

[0059] The top end of center column 6 also has a protruding convex 61, which can be hemispherical.

[0060] The beneficial effects of the above technical solution are that the top rod extends the shaft length, making it convenient to transmit force to the center column.

[0061] In some other embodiments of the utility model, along the axis of the gradually narrowing cross-sectional width of hollow cavity 32, the shaft end of outer sleeve 3 also has coaxial contact with gasket 2.

[0062] The beneficial effects of the above technical solution are that the gasket facilitates the assembly of the mechanism with suitable molds.

[0063] In some other embodiments of the utility model, the centroid of the gasket 2 is provided with a central hole 21, the central hole 21 is for the through of the ejector rod 1, the ejector rod 1 is further provided with a flange 11 radially extending away from the outer sleeve 3, the diameter of the flange 11 is greater than the diameter of the central hole 21.

[0064] The beneficial effects of the above technical scheme are that the gasket also plays a one-way limiting effect of avoiding the too far forward extension of the ejector rod.

[0065] The outer wall of the outer sleeve 3 is further provided with a pair of parallel flat surfaces 31, the flat surfaces 31 can destroy the complete circumferential surface of the outer wall of the outer sleeve 3, which is convenient for finding the specific direction of the outer sleeve 3 and limiting the rotation of the outer sleeve 3.

[0066] The through cavity 53 can be a cylindrical cavity, each inclined sliding block 5 is provided with a concave curved surface, and the collection of all the concave curved surfaces forms the inner wall of the through cavity 53.

[0067] As shown in Figs. Figure 8 , Figure 9 , Figure 8 and Figure 9 , the workpiece 8 is shown in most of the figures, which is the stretched product.

[0068] According to the relative positions of the inclined sliding blocks 5, Figure 1 , Figure 3 , Figure 5 , Figure 8 , the position states of the inclined sliding blocks 5 are the same, and the inclined sliding blocks 5 are completely buried in the hollow cavity 32, Figure 2 , Figure 4 , Figure 6 , Figure 9 , the position states of the inclined sliding blocks 5 are the same, and the inclined sliding blocks 5 are in the state of being appropriately lifted.

[0069] The above embodiments are only for illustrating the technical concept and characteristics of the utility model, the purpose is to enable the person skilled in the art to understand the content of the utility model and implement it, and it cannot limit the protection scope of the utility model, any equivalent changes or modifications according to the spirit and essence of the utility model should be covered in the protection scope of the utility model.

Claims

1. A rotary cut split-block positioning mechanism for a stretch product, characterized by include: The outer casing has a hollow cavity within it; An inclined slider is movably assembled inside the hollow cavity. The inclined sliders are arranged in a circular array around the axis of the outer sleeve. The inclined sliders and the hollow cavity are in contact through an inclined surface. The inclined surface causes the cross-sectional width of the hollow cavity to gradually change along the axial direction. The inclined sliders together enclose a through cavity. A central column, which is located within the through cavity; The central column and the inclined slider are mutually limited by a first interval, and the inclined slider and the outer casing are mutually limited by a second interval. The first interval limiting part can limit the axial displacement of the central column and the inclined slider, and the second interval limiting part can limit the axial displacement of the inclined slider and the outer casing. The axial movement length of the central column and the inclined slider allowed by the first interval limiting part is greater than the axial movement length of the inclined slider and the outer casing allowed by the second interval limiting part.

2. The rotary cut split-block product-stretching slide positioning mechanism of claim 1, wherein: The central column has radially outward protrusions, and the inclined slider has an inner groove. The radially protrusions and the inner groove are movably assembled with each other to form a first interval limiting part. The inclined slider has an outer groove, and a crossbeam block is provided between the inclined slider and the outer casing. The crossbeam block and the outer groove are movably assembled to form a first interval limiting part. The length of the inner groove along the axial direction of the outer casing is greater than the length of the outer groove along the axial direction of the outer casing.

3. The rotary cut split slide positioning mechanism for a stretch product of claim 2, wherein: The radial protrusions, crossbeam blocks, and inclined sliders are all equal in number, and the crossbeam blocks are engaged with the inner wall of the hollow cavity.

4. The rotary cut split slide positioning mechanism for a stretch product of claim 2, wherein: The cross-sectional profile of the beam block is a rounded rectangle.

5. The rotary cut split-block product-stretching slide positioning mechanism of claim 1, wherein: The inclined slider has several outer wall inclined ridges on the side facing the outer casing, and the hollow cavity has several inner wall inclined ridges, with the outer wall inclined ridges and the inner wall inclined ridges being parallel to each other.

6. The rotary cut split slide positioning mechanism for a stretch product of claim 5, wherein: In the same inclined slider, several adjacent outer wall inclined edges form a negative angle or a positive angle, and in the hollow cavity, several adjacent inner wall inclined edges form a negative angle or a positive angle.

7. The rotary cut split slide positioning mechanism for a stretch product of claim 1, wherein: The outer casing has a vent hole that connects to the hollow cavity, and one end of the vent hole is located on the outer wall of the outer casing.

8. The rotary cut split slide positioning mechanism for a stretch product of claim 1, wherein: Along the axial direction where the cross-sectional width of the hollow cavity gradually narrows, the shaft end of the central column is also in coaxial contact with a push rod.

9. The rotary cut split slide positioning mechanism for a stretch product of claim 8, wherein: Along the axial direction where the cross-sectional width of the hollow cavity gradually narrows, the shaft end of the outer sleeve is also coaxially contacted with a washer.

10. The rotary cut split-block product-stretching slide positioning mechanism of claim 9, wherein: The washer has a central hole through which the push rod passes. The end of the push rod opposite the outer casing also has a flange extending radially, and the diameter of the flange is larger than the diameter of the central hole.

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