Retractable core-pulling assembly for forming telescope product and mold of retractable core-pulling assembly

Abstract

The utility model relates to the technical field of dies, and particularly discloses a retractable core-pulling assembly for forming telescope products and a die thereof. The center guide sliding block comprises a core body, at least three first protruding blocks and at least three first grooves, the first protruding blocks are evenly distributed relative to the axis of the core body, the first grooves are evenly distributed relative to the axis of the core body, and the first protruding blocks and the first grooves are arranged at intervals. The distance between the first protruding block and the axis of the core body and the distance between the first groove and the axis of the core body are gradually reduced. The retractable sliding block assembly comprises a first sliding block which is in sliding connection with the first convex block and a second sliding block which is in sliding connection with the first groove; when the mold is opened, the second sliding blocks move upwards relative to the first grooves and get close to the axis side of the core body, and the first sliding blocks move upwards relative to the first protruding blocks and get close to the axis side of the core body. The contraction type demoulding effect is good, products are not damaged, and the accuracy and the performance of the knob are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould technical field especially a kind of shrinkable core-pulling assembly and mould for forming telescope product. BACKGROUND

[0002] Mould is a kind of high-precision industrial basic parts, is the key link indispensable in modern manufacturing, is widely used in automobile, electronic, aerospace, medical instruments and many other fields. With the continuous progress of science and technology and the increasingly fierce market competition, mould industry is developing towards high precision, high efficiency, intelligent and environmental protection.

[0003] In the production process of telescope knob, not only the screw thread is designed in the inner side of knob, but also there is relatively deep knob groove, which makes the conventional thread retreat demolding mode inapplicable, the structure of the shrinkable internal thread core-pulling mould is disclosed in the Chinese utility model patent with authorized announcement No.CN 202399475U, including a shrinkable core and a sliding core, the inner side shrinkable core-pulling can be realized, but due to the limited shrinkage distance, the relatively deep knob groove is not enough space to pull out in this case, leading to product damage or defect, affecting product quality. UTILITY MODEL CONTENT

[0004] The utility model aims at at least solving one of the technical problems existing in prior art. For this purpose, the utility model provides a kind of shrinkable core-pulling assembly and mould for forming telescope product, the structure shrinkable core-pulling assembly contraction demolding effect is good, not damage product, guarantee the precision and performance of knob.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions in the first aspect:

[0006] A kind of shrinkable core-pulling assembly for forming telescope product, comprising:

[0007] Center guide sliding block, the center guide sliding block includes core body, at least three first protrusions evenly distributed relative to the axis of the core body and at least three first recesses evenly distributed relative to the axis of the core body, the first protrusion and the first recess are arranged at intervals, in the direction along the axial direction of the core body and upwards, the first protrusion and the first recess gradually reduce the spacing to the axis of the core body;

[0008] The shrinkable slider assembly comprises at least three first sliders in sliding connection with the first protrusions and at least three second sliders in sliding connection with the first grooves, the first sliders and the second sliders each comprise a shaped part at the upper end of each; during mould closing, the shaped parts of each first slider and each second slider jointly form a shaped part for forming internal lines of a telescope product; during mould opening, each second slider moves upward relative to the first groove and approaches the axial center of the core, and each first slider moves upward relative to the first protrusion and approaches the axial center of the core.

[0009] According to some embodiments of the present application, the second slider is arranged between two adjacent first sliders, and the left and right sides of the second slider abut against the inner sides of the first sliders.

[0010] According to some embodiments of the present application, the first sliders and the second sliders are each three in number and are arranged in rotational symmetry relative to the axial center of the core by 120 degrees.

[0011] According to some embodiments of the present application, the upper end of each second slider is provided with a position-avoiding part on the side facing the axial center of the core.

[0012] According to some embodiments of the present application, each first slider and each second slider comprises a first fixing part at the lower part of each.

[0013] According to some embodiments of the present application, the central guide slider further comprises a second fixing part at the lower part of the core.

[0014] According to some embodiments of the present application, each first protrusion and each first groove is in dovetail shape, each first slider is provided with a dovetail-shaped groove matching each first protrusion, and each second slider is provided with a dovetail-shaped protrusion matching each first protrusion.

[0015] The second aspect of the present application provides a mould comprising any one of the above-mentioned shrinkable core-pulling assemblies for forming a telescope product, the mould further comprises a lower die plate, a fixing plate arranged below the lower die plate, and an ejection assembly arranged below the fixing plate and connected with the lower die plate, wherein:

[0016] The lower part of the central guide slider is connected with the fixing plate.

[0017] The shrinkable slider assembly is connected with the lower die plate.

[0018] During mould opening, the ejection assembly is used to lift the lower die plate and make the shrinkable slider assembly approach and shrink the core-pulling inwardly.

[0019] According to some embodiments of the utility model, the lower mould plate is equipped with a mould insert block connected with the ejection assembly, and the mould insert block is used for demoulding the telescope product.

[0020] According to some embodiments of the utility model, the bottom of the lower mould plate is equipped with a limiting plate used for fixing the first sliding block and the second sliding block, the bottom of the first sliding block and the second sliding block are both equipped with a first fixing part, and the bottom of the lower mould plate is equipped with a fixing groove matched with the first fixing part.

[0021] The utility model has at least the following beneficial effects:

[0022] The first protrusions and the first recesses are uniformly and interval distributed on the outer side of the core body of the center guide sliding block, the first sliding block of the retractable sliding block assembly is slidably connected on the first protrusions, and the second sliding block is slidably connected in the first recesses, when the mould is opened, the first sliding block and the second sliding block are moved upwards relative to the first protrusions and the first recesses, and are relatively close to the axial side, so that the retractable core-pulling of the larger retracting distance is realized, the internal structure of the telescope product is not damaged when the mould core-pulling demoulding of the structure is used, and the thread groove and the knob groove demoulding of the telescope product are realized. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structure schematic view of an embodiment of the retractable core-pulling assembly for forming the telescope product of the utility model.

[0024] Figure 2 It is a structure schematic view of an embodiment of the retractable core-pulling assembly for forming the telescope product of the utility model.

[0025] Figure 3 It is a structure schematic view of an embodiment of the retractable core-pulling assembly for forming the telescope product of the utility model.

[0026] Figure 4 It is a structure schematic view of an embodiment of the retractable core-pulling assembly for forming the telescope product of the utility model.

[0027] Figure 5 It is a structure schematic view of an embodiment of the mould of the utility model. DETAILED DESCRIPTION

[0028] The utility model provides the following description of reference drawings to help comprehensively understand various embodiments of the utility model as defined by the claim and its equivalents. The description includes various specific details to help understanding, but these details should be regarded as just exemplary. Therefore, those skilled in the art will realize that various changes and modifications can be made to various embodiments described herein without departing from the scope and spirit of the utility model.

[0029] In the description of the utility model, the orientation description, such as the orientation or positional relationship of the indication of up, down, front, back, left, right etc. is based on the orientation or positional relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0030] It should be understood that when an element (e.g., a first element) is "connected" with another element (e.g., a second element), the element can be directly connected with the other element, or there can be an intervening element (e.g., a third element) between the element and the other element.

[0031] The embodiment of the utility model provides a telescopic core-pulling assembly for forming telescope product, as shown in the figure, comprising: Figures 2-5 As shown in the figure, comprising:

[0032] The center guide sliding block 1 comprises a core body 101, at least three first protrusions 102 uniformly distributed relative to the axis of the core body 101, and at least three first recesses 103 uniformly distributed relative to the axis of the core body 101, the first protrusions 102 and the first recesses 103 are arranged at intervals, and in the axial and upward direction of the core body 101, the spacing of the first protrusions 102 and the first recesses 103 to the axis of the core body 101 gradually decreases;

[0033] The telescopic sliding block assembly 2 comprises at least three first sliding blocks 201 connected with the first protrusions 102 and at least three second sliding blocks 202 connected with the first recesses 103, and the first sliding blocks 201 and the second sliding blocks 202 each comprise a forming part 203 at the upper end thereof; when the mold is closed, the forming parts 203 of each first sliding block 201 and each second sliding block 202 are combined to form a forming part for forming the internal texture of the telescope product; when the mold is opened, each second sliding block 202 moves upward relative to the first recess 103 and approaches the axis of the core body 101, and each first sliding block 201 moves upward relative to the first protrusion 102 and approaches the axis of the core body 101.

[0034] Specifically, the center guide sliding block 1 is in a conical shape, and first protrusions 102 and first grooves 103 are uniformly and evenly distributed on the outer side of the center guide sliding block 1 and inclined inwardly. A first sliding block 201 is slidably connected to the first protrusion 102, and a second sliding block 202 is slidably connected to the first groove 103. The first sliding block 201 and the second sliding block 202 are arranged in a spaced manner around the outer side of the center guide sliding block 1. When the mold is closed, the respective forming portions 203 jointly form a complete forming portion for forming the internal thread and the rotation thread of the telescope product. When the mold is opened, the first sliding block 201 and the second sliding block 202 move upward relative to the first protrusion 102 and the first groove 103 and move closer to the axial side, so that the first sliding block 201 and the second sliding block 202 are separated from the inner side of the telescope product that has been formed, and the telescopic core pulling is achieved without damaging the internal structure. The first sliding block 201 and the second sliding block 202 can be arranged in an overlapping manner or in a side-by-side manner. The inclination angles of the first protrusions 102 and the first grooves 103 in the axial direction are different in different positional relationships. In the embodiment, the second sliding block 202 is arranged between two adjacent first sliding blocks 201. The inclination angle of the first groove 103 in the axial direction is smaller than the inclination angle of the first protrusion 102 in the axial direction. The moving distance of the first sliding block 201 that cooperates with the first groove 103 is greater than the moving distance of the second sliding block 202, which provides space for the contraction of the second sliding block 202 and facilitates the demolding of the thread groove and the knob groove of the telescope product.

[0035] In some embodiments, as shown in FIG. 2, the second sliding block 202 is arranged between two adjacent first sliding blocks 201, and the left and right sides of the second sliding block 202 abut the inner sides of the first sliding blocks 201. Figures 3-4

[0036] Because the left and right sides of the second sliding block 202 abut the inner sides of the first sliding blocks 201 and there is no obstruction in the inner side of the first sliding block 201, the second sliding block 202 obtains the maximum contraction space. As shown in FIG. 3, the second sliding block 202 can be contracted to the extent of abutting each other, which can enable the demolding of a deeper knob groove. In the embodiment, there are three second sliding blocks 202, which cooperate with the three first sliding blocks 201 of the semicircular shape to form a circular closed loop. The second sliding blocks 202 move closer to the axial side and are finally contracted into a triangular shape, which has a high degree of space utilization. Figure 4 Further, as shown in FIG. 4, there are three first sliding blocks 201 and three second sliding blocks 202, which are arranged in a 120° rotational symmetry relative to the axial center 101 of the core body 101.

[0037] Figures 2-4 The rotational symmetry design structure is more concise. The sizes of the first sliding blocks 201 are the same, and the sizes of the second sliding blocks 202 are the same, which is easy to process and maintain.

[0038] The rotational symmetry design structure is more concise. The sizes of the first sliding blocks 201 are the same, and the sizes of the second sliding blocks 202 are the same, which is easy to process and maintain.

[0039] ​​Further, as shown in Figure 2 、 4 the upper end of each second slider 202 is provided with a position-avoiding part 204 on the side facing the axis of the core 101.

[0040] The position-avoiding part 204 facilitates the further contraction of the second slider 202 as shown in Figure 4 .

[0041] In some embodiments, as shown in Figure 2 , each first slider 201 and each second slider 202 comprises a first fixing part 205 at the lower part thereof.

[0042] The first fixing part 205 can fix the first slider 201 and the second slider 202 on the fixed plate or the movable plate of the mold, and is used to push or fix the first slider 201 and the second slider 202, facilitating the up-and-down sliding of the center guide slider 1 relative to the contraction-type slider assembly 2.

[0043] In some embodiments, as shown in Figure 2 , the center guide slider 1 further comprises a second fixing part 104 at the lower part of the core 101.

[0044] The second fixing part 104 can fix the center guide slider 1 on the fixed plate or the movable plate of the mold, and is used to push or fix the center guide slider 1, facilitating the up-and-down sliding of the center guide slider 1 relative to the contraction-type slider assembly 2.

[0045] In some embodiments, as shown in Figure 2 , each first protrusion 102 and each first recess 103 are dovetail-shaped, each first slider 201 is provided with a dovetail-shaped recess matching each first protrusion 102, and each second slider 202 is provided with a dovetail-shaped protrusion matching each first protrusion 102.

[0046] The dovetail-shaped recess and the dovetail-shaped protrusion are matched, the dovetail-shaped structure is stable, the dovetail-shaped groove has good guiding property, the parts are accurately aligned, and the reliability of the equipment is enhanced.

[0047] The second aspect of the embodiments of the utility model discloses a mold comprising any one of the contraction-type core-pulling assemblies for forming telescope products, which further comprises a lower mold plate 301, a fixed plate 302 arranged below the lower mold plate 301 and an ejection assembly 303 arranged below the fixed plate 302 and connected with the lower mold plate 301, wherein:

[0048] The lower part of the center guide slider 1 is connected with the fixed plate 302.

[0049] The contraction-type slider assembly 2 is connected with the lower mold plate 301.

[0050] When the mold is opened, the ejection assembly 303 is used to lift the lower mold plate 301 and make the telescopic slider assembly 2 close inwardly.

[0051] The lower part of the center guide slider 1 is connected with the fixed plate 302, the fixed plate 302 is fixed, the telescopic slider assembly 2 is connected on the lower mold plate 301 and can be lifted by the ejection assembly 303 when the mold is opened, that is, the telescopic slider assembly 2 is slid upwardly relative to the center guide slider 1, so that the first slider 201 and the second slider 202 in it are relatively shrunk to the center side to demold the telescope product; the forming part 203 of the first slider 201 and the second slider 202 is protruded from the lower mold plate 301 and cooperates with the lower mold plate 301 to form the telescope product, and the ejection assembly 303 can make the telescope product demold when the lower mold plate 301 is ejected, thereby improving the production efficiency.

[0052] Further, as shown in Figure 5 , the lower mold plate 301 is provided with a mold insert block 304 connected with the ejection assembly 303, and the mold insert block 304 is used to demold the telescope product.

[0053] The lower edge of the telescope product is narrow, and if a conventional ejector pin is directly used for ejection, it is difficult to eject due to small contact area and the product is easy to be damaged, and the setting of the mold insert block 304 makes the demolding of the telescope product more convenient, and in the embodiment, the ejection assembly 303 is provided with an ejector pin connected with the mold insert block 304, which cooperates with the ejector pin of the material head to make the product demold by lifting the mold insert block 304.

[0054] Further, as shown in Figure 5 , the bottom of the lower mold plate 301 is provided with a limiting plate 305 for fixing the first slider 201 and the second slider 202, and the bottom of each of the first slider 201 and the second slider 202 is provided with a first fixing part 205, and the bottom of the lower mold plate 301 is provided with a fixing groove matched with the first fixing part 205.

[0055] In the embodiment, the first fixing part 205 at the bottom of the first slider 201 and the second slider 202 is embedded in the fixing groove, and the upper part is penetrated through the upper mold plate, and the first slider 201 and the second slider 202 are fixed on the upper mold plate through the limiting plate 305, so as to be conveniently moved with the movement of the upper mold plate.

[0056] The terms and words used in the above description and claims are not limited to the literal meaning, but are merely used by the applicant to enable a clear and consistent understanding of the present application. Therefore, it should be clear to those skilled in the art that the above description of various embodiments of the present application is only for the purpose of illustration, not for the purpose of limiting the present application as defined by the appended claims and their equivalents.

Claims

1. A shrinkable core-pulling assembly for molding telescope products, characterized in that, include: A central guide block (1) includes a core (101), at least three first protrusions (102) evenly distributed relative to the axis of the core (101), and at least three first grooves (103) evenly distributed relative to the axis of the core (101). The first protrusions (102) and the first grooves (103) are arranged at intervals. In the direction along the axial direction of the core (101) and upward, the distance between the first protrusions (102) and the first grooves (103) and the axis of the core (101) gradually decreases. The retractable slider assembly (2) includes at least three first sliders (201) slidably connected to the first protrusion (102) and at least three second sliders (202) slidably connected to the first groove (103). The first sliders (201) and the second sliders (202) each include a forming part (203) located at their respective upper ends. When the mold is closed, the forming parts (203) of each of the first sliders (201) and each of the second sliders (202) are combined to form a forming part for forming the internal texture of the telescope product. When the mold is opened, each of the second sliders (202) moves upward relative to the first groove (103) and approaches the axial side of the core (101), and each of the first sliders (201) moves upward relative to the first protrusion (102) and approaches the axial side of the core (101).

2. The shrinkable core-pulling assembly for molding telescope products according to claim 1, characterized in that: The second slider (202) is disposed between two adjacent first sliders (201), and the left and right sides of the second slider (202) abut against the inner side of the first slider (201).

3. A shrinkable core-pulling assembly for molding telescope products according to claim 2, characterized in that: There are three of each of the first slider (201) and the second slider (202), all of which are symmetrically arranged with a 120° rotation relative to the axis of the core (101).

4. A shrinkable core-pulling assembly for molding telescope products according to claim 2, characterized in that: Each of the second sliders (202) has a clearance portion (204) on the side facing the core (101) at its upper end.

5. A shrinkable core-pulling assembly for molding telescope products according to any one of claims 1-4, characterized in that: Each of the first sliders (201) and each of the second sliders (202) includes a first fixing part (205) located at its lower part.

6. A shrinkable core-pulling assembly for molding telescope products according to any one of claims 1-4, characterized in that: The central guide block (1) also includes a second fixing part (104) located at the lower part of the core (101).

7. A shrinkable core-pulling assembly for molding telescope products according to any one of claims 1-4, characterized in that: Each of the first protrusions (102) and each of the first grooves (103) are dovetail-shaped. Each of the first sliders (201) is provided with a dovetail-shaped groove that matches the first protrusions (102). Each of the second sliders (202) is provided with a dovetail-shaped protrusion that matches the first protrusions (102).

8. A mold comprising a shrinkable core-pulling assembly for molding a telescope product as described in any one of claims 1-7, characterized in that, It also includes a lower template (301), a fixing plate (302) disposed below the lower template (301), and an ejector assembly (303) disposed below the fixing plate (302) and connected to the lower template (301), wherein: The lower part of the central guide block (1) is connected to the fixed plate (302); The retractable slider assembly (2) is connected to the lower template (301); When the mold is opened, the ejector assembly (303) is used to lift the lower template (301) and move the retractable slider assembly (2) inward to shrink and pull the core.

9. The mold according to claim 8, characterized in that: The lower template (301) is provided with a mold core insert (304) connected to the ejection assembly (303), and the mold core insert (304) is used to demold the telescope product.

10. The mold according to claim 8, characterized in that: The bottom of the lower template (301) is provided with a limiting plate (305) for fixing the first slider (201) and the second slider (202). The bottom of the first slider (201) and the second slider (202) are both provided with a first fixing part (205). The bottom of the lower template (301) is provided with a fixing groove that matches the first fixing part (205).

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