Multi-angle ejector demolding structure
By designing a multi-oblique top release structure, the diagonal top sliding seat of the two sets of kit units forms a demolding angle with the surface of the ejection plate, the problem of difficult to release the complex attachment structure of the injection molded product in the prior art is solved, and the problem of the complex attachment structure of the injection molded product is realized. Efficient and safe mold release process.
Patent Information
- Application Number
- CN202411553536.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-02
- Publication Date
- 2025-02-18
AI Technical Summary
In the existing injection molding production technology, most products are difficult to achieve one-time demolding due to the complexity of the flange and the structure attached to the cab during demolding. The existing demolding scheme occupies a large space, is complex in structure, and is high in processing costs.
A multi-oblique top mold release structure is designed, including two sets of kit units, each set of units includes an oblique top, an oblique top rod, a guide sleeve, an oblique top slide seat and a sliding block. The oblique top slide seat is equipped with an oblique slide groove and The surface of the ejection plate forms a demolding angle, and the upper and lower sets of oblique top mechanisms work together to achieve effective demolding of the complex attached structure.
It realizes effective mold release of injection molded parts with complex attached structures, reduces production costs, improves production efficiency, and has scientific and reasonable structural design and safe and reliable use.
Smart Images
Figure CN119458799A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of injection molding production, in particular to a multi-slant top demoulding structure. Background Art
[0002] In injection molding production, injection molded products often have flanges and attached structures of the card seat, which cannot be demolded in one go. The demolding solutions commonly used in the existing technology include: Solution 1, Doghouse inclined top demolding, installation hole cylinder core pulling or slider tunnel core pulling; Solution 2, design a large inclined top, and design a reversing structure inside the inclined top to complete demolding at two angles. Although Solution 1 is suitable for products with card seats at the edge, it occupies a large space and has a complex structure; Solution 2 occupies a large space, and there cannot be other structures around it, the structure is complex, and the processing and manufacturing cost is high. Summary of the invention
[0003] In view of the deficiencies in the prior art, the present invention provides a multi-sloped top demoulding structure to solve the above technical problems.
[0004] The technical solution adopted by the present invention is:
[0005] A multi-slant ejector demolding structure includes two sets of kit units: kit unit one and kit unit two, each kit unit includes a sloped ejector, a sloped ejector rod, a guide sleeve, a sloped ejector sliding seat and a sliding block, the kit unit one correspondingly includes: an upper sloped ejector, an upper sloped ejector rod, a guide sleeve one, an upper sloped ejector sliding seat, and a large sliding block, the kit unit two correspondingly includes: a lower sloped ejector, a lower sloped ejector rod, a guide sleeve two, a lower sloped ejector sliding seat, and a small sliding block, and also includes an ejection plate, a punch and a bottom plate, characterized in that the upper sloped ejector sliding seat and the lower sloped ejector sliding seat are fixed on the ejection plate, and they are respectively provided with an oblique sliding groove, and the angle between the oblique sliding groove and the upper surface of the ejection plate is the demolding angle, and the ejection angle of the sliding groove of the upper sloped ejector sliding seat is The mold angle is demolding angle 1, the demolding angle of the slide groove of the lower inclined top sliding seat is demolding angle 2, the slide grooves of the upper inclined top sliding seat and the lower inclined top sliding seat are respectively provided with an angle of angle 3 with the side direction of the width of the upper surface of the ejection plate, the large sliding block and the small sliding block are respectively movably installed in the oblique slide grooves of the upper inclined top sliding seat and the lower inclined top sliding seat, the guide sleeve 1 and the guide sleeve 2 are both fixed on the punch, the upper inclined ejector rod and the lower inclined ejector rod are respectively movably installed in the guide holes of the guide sleeve 1 and the guide sleeve 2, and the upper end of the upper inclined ejector rod is fixed with an upper inclined ejector, and the lower end is fixedly connected or hinged to the large sliding block, while the upper end of the lower inclined ejector rod is fixed with a lower inclined ejector, and the lower end is fixedly connected or hinged to the small sliding block.
[0006] The multi-sloped top demoulding structure is characterized in that it includes at least two sets of kit units.
[0007] The multi-sloped ejector demolding structure is characterized in that each of the inclined ejector sliding seats of the kit unit is respectively provided with an inclined slide groove, and a demolding angle is provided between the inclined slide groove and the upper surface of the ejector plate.
[0008] The multi-sloped top demoulding structure is characterized in that it is also provided with a protection mechanism, which includes a protection rod, a fixed block one, a fixed block two and a mounting hole, wherein the mounting hole is arranged on the sliding block, and the protection rod is movably installed in the mounting hole of the sliding block, or the mounting hole is arranged on the large sliding block and / or the small sliding block, and the protection rod is movably installed in the mounting hole of the large sliding block and / or the small sliding block, and the upper end of the protection rod is fixed to the punch through the fixed block two, and the lower end is fixed to the bottom plate through the fixed block one.
[0009] The multi-sloped top demolding structure is characterized in that the sliding surface of the sliding block and / or the inclined top sliding seat slot, or the sliding surface of the large sliding block, small sliding block and / or the upper inclined top sliding seat and the lower inclined top sliding seat slot, is inlaid with a copper and graphite material sliding sheet.
[0010] The multi-sloped top demoulding structure is characterized in that the angle 3 is in the range of 0°-45°.
[0011] The multi-sloped top demoulding structure is characterized in that the demoulding angle is in the range of 3°-45°.
[0012] The multi-sloped top demoulding structure is characterized in that the first demoulding angle is in the range of 3°-45°, and the second demoulding angle is in the range of 3°-45°.
[0013] The multi-sloped top demoulding structure of the present invention has a scientific design and a reasonable structure, is suitable for injection molded parts with relatively complex structures, has a good demoulding effect, is safe and reliable, is easy to use, has high mass production efficiency, is durable, and has a low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.
[0015] Figure 1 A schematic diagram of a rear cover plate is the object of the present invention;
[0016] Figure 2 for Figure 1 A magnified schematic diagram of the M region;
[0017] Figure 3 for Figure 1 Schematic diagram of CC-direction rotation section;
[0018] Figure 4It is a schematic diagram of another rear cover plate, which is the working object of the present invention;
[0019] Figure 5 To invent a multi-sloped top demoulding structure and a three-dimensional schematic diagram of the product;
[0020] Figure 6 for Figure 5 Schematic diagram of local rotation in the top-down direction;
[0021] Figure 7 for Figure 6 A schematic cross-sectional view of the AA upward inclined ejector before ejection;
[0022] Figure 8 for Figure 6 A schematic cross-sectional view of the BB before ejection with the BB tilted downward;
[0023] Fig. 9 for Figure 6 A schematic cross-sectional view of the AA upward inclined ejector after ejection;
[0024] Fig.10 for Figure 6 A schematic cross-sectional view of the state after the BB is ejected with the downwardly inclined ejector;
[0025] In the figure: 1-lower inclined top; 2-upper inclined top; 3-lower inclined top rod; 4-upper inclined top rod; 5-guide sleeve one; 6-guide sleeve two; 7-upper inclined top sliding seat; 8-lower inclined top sliding seat; 9-ejection plate; 10-protection rod; 11-large sliding block; 12-small sliding block; 13-fixed block one; 14-fixed block two; P-rear cover; P1-flange; K-seat; K1-card hole; L-small card seat; L1-small card hole; X-transverse; Y-longitudinal; Z-vertical; α-angle one; β-angle two; μ-angle three; ε-mold release angle one; λ-mold release angle two; γ-inclination angle one; θ-inclination angle two. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described below are only used to explain the present invention. In these descriptions, the keywords that need to be noted include "card seat", "card hole", "lateral X", "longitudinal Y", "vertical Z", "length (side) direction", "width (side) direction", "height direction", "mold release angle", "kit unit", "slide groove (bottom surface or its center line)", "sliding seat (bottom surface or its center line)", etc. These are only for the convenience of describing the present invention and simplifying the description, and therefore cannot be understood as limiting the present invention.
[0027] Example 1
[0028] The multi-slant top demoulding structure of the present invention is used for demoulding an injection molded part such as a rear cover plate P produced by an injection molding machine. Figure 1 , Figure 2 and Figure 3 As shown, the injection molding machine includes an ejector plate 9, see Figure 5 As shown, the ejector plate 9, the length (side) direction of its upper surface is set to the horizontal direction X, the width (side) direction of the upper surface is set to the longitudinal direction X, and the height direction of the upper surface is set to the vertical direction Z. As a reference, the rear cover plate P, its attached structure includes: a flange P2 and a holder K. When the rear cover plate P is injection molded on the injection molding machine, the flange P2 has an angle of angle α with the horizontal direction X. The holder K is provided with a clamping hole K1. The clamping hole K1 is used to install a standard buckle. The axis of the clamping hole K1 has an angle of angle 2 β with the horizontal direction X. In this embodiment, the angle 1 α is 12°, and the angle 2 β is 6°. It can be seen that the flange P2, the base K and the hole K1 of the rear cover plate P are arranged at the upper and lower parts of the same side of the rear cover plate P, so they cannot be demolded directly and need to be processed by the so-called inclined ejector mechanism. The ejection surface of the flange P2 of the rear cover plate P and the axis of the hole K1 of the base K, if the upper surface of the ejection plate 9 (lateral X) is used as a reference, both have an angle, and their angles are different angles of angle 1 α and angle 2 β, or the ejection surface of the flange P2 of the rear cover plate P and the axis of the hole K1 of the base K have other spatial angles with the reference, and demolding cannot be completed by the single inclined ejector mechanism of the prior art. According to the ejection surface of the flange P2 of the rear cover P and the axis of the hole K1 of the socket K, there are angles α and β respectively. In order to facilitate smooth demolding, according to the actual arrangement of the flange P2 of the rear cover P and the hole K1 of the socket K, it is necessary to demold obliquely downward of the flange P2 and obliquely upward of the hole K1. Therefore, the demolding angle ε corresponding to the demolding of the flange P2 is set to be slightly larger than the angle α, which is set to 15°; the demolding angle λ corresponding to the hole K1 is set to be slightly smaller than the angle β, which is set to 5°.
[0029] See also Figures 6 to 10As shown, the multi-slant ejector demoulding structure of this embodiment is provided with two similar sets of slant ejector demoulding mechanism kit units according to the above-mentioned needs, and more than three sets of slant ejector demoulding mechanisms can also be provided according to needs, each kit unit includes a kit: a slant ejector, a slant ejector rod, a guide sleeve, a slant ejector sliding seat and a sliding block. In this embodiment, the kit unit includes a kit unit 1 and a kit unit 2. One set of slant ejector demoulding mechanism kit unit 1 correspondingly includes: an upper slant ejector 2, an upper slant ejector rod 4, a guide sleeve 1 5, an upper slant ejector sliding seat 7, and a large sliding block 11, and the other set of slant ejector demoulding mechanism kit unit 2 correspondingly includes: a lower slant ejector 1, a lower slant ejector rod 3, a guide sleeve 2 6, a lower slant ejector sliding seat 8, and a small sliding block 12, and also includes an ejector plate, a punch and a bottom plate of an injection molding machine. Both sets of slant ejector demoulding mechanisms are installed on the injection molding machine and the ejector rod. On the ejection plate 9, the upper inclined ejector 2 and the corresponding component kit unit 1 of the inclined ejector demolding mechanism, and the lower inclined ejector 1 and the corresponding component kit unit 2 of the other inclined ejector demolding mechanism, respectively correspond to the demolding of the flange P2 of the rear cover plate P and the clamping hole K1 of the clamping seat K. The upper inclined ejector sliding seat 7 and the lower inclined ejector sliding seat 8 are fixed on the ejection plate 9 for oblique ejection demolding. They are respectively provided with oblique sliding grooves, and the oblique angles of the sliding grooves (bottom surface or its center line) and the upper surface (lateral X) of the ejection plate 9 are provided, that is, the angle between the sliding grooves and the demolding angles of the upper surface of the ejection plate 9. The demolding angle of the sliding groove of the upper inclined ejector sliding seat 7 is a demolding angle ε, and the demolding angle of the sliding groove of the lower inclined ejector sliding seat 8 is a demolding angle λ. In this embodiment, the demolding angle ε is 15°, and the demolding angle λ is 5°. See Figure 6As shown, according to the need for the direction of the flange P2 of the rear cover plate P after the mold is smoothly ejected, the upper inclined top sliding seat 7 and the lower inclined top sliding seat 8 (bottom surface or its center line) are respectively provided with an angle of angle 3μ with the width side direction of the upper surface of the ejection plate 9 (longitudinal Y). The lower inclined top sliding seat 8 (bottom surface or its center line) is arranged along the longitudinal direction Y, that is, parallel to the width side direction of the upper surface of the ejection plate 9 (longitudinal Y). The angle 3μ is 0°. The angle 3μ between the upper inclined top sliding seat 7 and the width side direction of the upper surface of the ejection plate 9 is 16° in this embodiment. The angle 3μ is generally in the range of 0°-45°. The large sliding block 11 and the small sliding block 12 are arranged along the longitudinal direction Y, that is, parallel to the width side direction of the upper surface of the ejection plate 9 (longitudinal Y). The sliding blocks 12 are movably mounted in the oblique slide grooves of the upper inclined ejector sliding seat 7 and the lower inclined ejector sliding seat 8, respectively. The guide sleeve 2 6 and the guide sleeve 1 5 are respectively fixed on the punch of the injection molding machine. The upper inclined ejector rod 4 and the lower inclined ejector rod 3 are respectively movably mounted in the guide holes of the guide sleeve 1 5 and the guide sleeve 2 6, and the upper end of the upper inclined ejector rod 4 is fixed with the upper inclined ejector 2, and the lower end is fixedly connected or hinged to the large sliding block 11, while the upper end of the lower inclined ejector rod 3 is fixed with the lower inclined ejector 1, and the lower end is fixedly connected or hinged to the small sliding block 12. The inclination angle γ of the installed upper inclined ejector rod 4 and the ejection plate 9 is 75°, and the inclination angle θ of the lower inclined ejector rod 3 and the ejection plate 9 is 85°. When the mold is opened and demolded, the flange P2 of the rear cover P and the card hole K1 of the card seat K are demolded, and the ejector plate 9 is ejected along the vertical direction Z, and the upper inclined ejector sliding seat 7 and the lower inclined ejector sliding seat 8 respectively push the large sliding block 11 and the small sliding block 12 to slide along the slide groove, so that the upper inclined ejector rod 4 and the lower inclined ejector rod 3 are respectively ejected in the vertical direction Z and the preset direction of the mechanism at the same time, so that the upper inclined ejector 2 and the lower inclined ejector 1 are respectively ejected from the flange P2 of the rear cover P and the card hole K1 of the card seat K along the set demolding angle to complete the demolding.
[0030] Example 2
[0031] This embodiment is basically similar to the embodiment 1, except that, in order to increase the strength, a protection mechanism is also provided, including a protection rod 10, a fixing block 13, a fixing block 2 14 and a mounting hole, wherein the mounting hole is provided on the large sliding block 11, and the protection rod 10 is movably installed in the mounting hole of the large sliding block 11, and the upper end is fixed to the punch through the fixing block 2 14, and the lower end is fixed to the bottom plate through the fixing block 13. When demoulding, the protection rod 10 strengthens the support for the large sliding block 11. In addition, in order to facilitate demoulding, the sliding surfaces of the sliding grooves of the large sliding block 11 and the small sliding block 12, or / and the upper inclined top sliding seat 7 and the lower inclined top sliding seat 8 are inlaid with copper plus graphite sliding sheets, and the copper plus graphite material sliding sheets play a good guiding and self-lubricating role. Due to the effect of the protection mechanism and the improvement of the sliding surfaces of the inclined top sliding seat 7 and the lower inclined top sliding seat 8, the effect of their inclination on the mechanical self-locking effect of the large sliding block 11 and the small sliding block 12 can be reduced. Therefore, the demolding angle ε and the demolding angle λ of the present invention are both set in the range of 3°-45°, that is, the inclination angle γ and the inclination angle θ of the upper inclined top rod 4 and the lower inclined top rod 3 are both in the range of 45°-87°.
[0032] Example 3
[0033] This embodiment is basically similar to the embodiment 1, except that, based on the double inclined top mechanism of the embodiment 1, Figure 4 In order to meet the need of demoulding of the additional structure of the newly added injection molding component of the rear cover plate P, and to demould the newly added small card seat L and its small card hole L1, another set of inclined ejector mechanism kit unit 3 similar to the kit unit 2 of embodiment 1 is added, including an inclined ejector, and corresponding components: an inclined ejector rod, a guide sleeve, an inclined ejector sliding seat, and a sliding block, which is equivalent to (similar to) the structure of the lower inclined ejector 1, the lower inclined ejector rod 3, the guide sleeve 2 6, the lower inclined ejector sliding seat 8, the small sliding block 12 and other components of the kit unit 2 of embodiment 1, and is additionally installed on the injection molding machine and the ejector plate 9. The inclined ejector sliding seat is also provided with an inclined The slide groove is installed in the oblique slide groove of the inclined top sliding seat. The guide sleeve is fixed on the punch. The inclined top rod is installed in the guide hole of the guide sleeve, and the upper end of the inclined top rod is fixed with an inclined top. The lower end is fixedly connected or hinged to the sliding block. The demoulding angle of the angle between the oblique slide groove (bottom edge or center line) of the sliding seat and the upper surface of the ejection plate 9 is set to 9°, so the inclination angle between the installed inclined top rod and the upper surface of the ejection plate 9 is 81°, and the angle between the slide groove (bottom surface or center line) of the inclined top sliding seat and the width side direction (longitudinal Y) of the upper surface of the ejection plate 9 is 10°. The sliding surface of the sliding block or / and the inclined top sliding seat slide groove is inlaid with a copper plus graphite material slide. The additional set of inclined top mechanism in this embodiment has a similar function to the inclined top mechanism described in the second unit of the kit of the aforementioned embodiment 1, and acts on the demoulding of the corresponding attached structure small card seat L and its small card hole L1.
[0034] See also Figure 7 and Fig. 9 This embodiment may also be provided with a protection mechanism similar to the one shown in the figure, which includes a protection rod 10, a fixing block 13, a fixing block 14 and a mounting hole, wherein the mounting hole is provided on the sliding block, and the protection rod 10 is movably installed in the mounting hole of the sliding block, and the upper end is fixed to the punch through the fixing block 14, and the lower end is fixed to the base plate through the fixing block 13.
[0035] The above is only a general embodiment of the present invention. For those skilled in the art, the present invention may also have other embodiments with various modifications and variations, which are not described here one by one. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope required by the present invention.
Claims
1. A multi-sloping ejector demoulding structure, comprising two sets of kit units: kit unit 1 and kit unit 2, each kit unit comprising a sloping ejector, a sloping ejector rod, a guide sleeve, a sloping ejector sliding seat and a sliding block, and the kit unit 1 correspondingly comprises: An upper inclined ejector (2), an upper inclined ejector rod (4), a guide sleeve (5), an upper inclined ejector sliding seat (7), and a large sliding block (11), wherein the second kit unit correspondingly comprises: a lower inclined ejector (1), a lower inclined ejector rod (3), a guide sleeve (6), a lower inclined ejector sliding seat (8), and a small sliding block (12), and further comprises an ejection plate (9), a punch and a bottom plate, characterized in that the upper inclined ejector sliding seat (7) and the lower inclined ejector sliding seat (8) are fixed on the ejection plate (9), and they are respectively provided with an oblique slide groove, and a demolding angle is provided between the oblique slide groove and the upper surface of the ejection plate (9), the demolding angle of the slide groove of the upper inclined ejector sliding seat (7) is a demolding angle one (ε), the demolding angle of the slide groove of the lower inclined ejector sliding seat (8) is a demolding angle two (λ), and the upper inclined ejector sliding seat (7) ) and the lower inclined ejector sliding seat (8), and are provided with an angle of angle three (μ) in the width side direction of the upper surface of the ejector plate (9); the large sliding block (11) and the small sliding block (12) are respectively movably mounted in the oblique sliding grooves of the upper inclined ejector sliding seat (7) and the lower inclined ejector sliding seat (8); the guide sleeve 1 (5) and the guide sleeve 2 (6) are both fixed on the punch; the upper inclined ejector rod (4) and the lower inclined ejector rod (3) are respectively movably mounted in the guide holes of the guide sleeve 1 (5) and the guide sleeve 2 (6); and the upper end of the upper inclined ejector rod (4) is fixed with an upper inclined ejector (2), and the lower end is fixedly connected or hinged to the large sliding block (11); and the upper end of the lower inclined ejector rod (3) is fixed with a lower inclined ejector (1), and the lower end is fixedly connected or hinged to the small sliding block (12).
2. A multi-sloped top demoulding structure according to claim 1, characterized in that: Includes at least two kit units.
3. A multi-sloped top demoulding structure according to claim 2, characterized in that: Each of the kit unit inclined ejector sliding seats is respectively provided with an inclined slide groove, and a demoulding angle is provided between the inclined slide groove and the upper surface of the ejection plate (9).
4. The multi-sloped top demoulding structure according to claim 2, characterized in that: A protection mechanism is also provided, which comprises a protection rod (10), a fixing block 1 (13), a fixing block 2 (14) and a mounting hole, wherein the mounting hole is provided on the sliding block, and the protection rod (10) is movably mounted in the mounting hole of the sliding block, or the mounting hole is provided on the large sliding block (11) or / and the small sliding block (12), and the protection rod (10) is movably mounted in the mounting hole of the large sliding block (11) or / and the small sliding block (12), and the upper end of the protection rod (10) is fixed to the male mold through the fixing block 2 (14), and the lower end is fixed to the bottom plate through the fixing block 1 (13).
5. The multi-sloped top demoulding structure according to claim 1, characterized in that: The sliding surface of the sliding block and / or the inclined top sliding seat slot, or the sliding surface of the large sliding block (11), the small sliding block (12) and / or the upper inclined top sliding seat (7) and the lower inclined top sliding seat (8) slot, is inlaid with a copper and graphite material sliding sheet.
6. The multi-sloped top demoulding structure according to claim 1, characterized in that: The angle π (μ) is in the range of 0°-45°.
7. A multi-sloped top demoulding structure according to claim 1 or 3, characterized in that: The demoulding angle is in the range of 3°-45°.
8. The multi-sloped top demoulding structure according to claim 1, characterized in that: The draft angle 1 (ε) is in the range of 3°-45°, and the draft angle 2 (λ) is in the range of 3°-45°.