Multi-angle ejector demolding structure

Abstract

The utility model relates to the technical field of injection molding production, in particular to a multi-pitched roof demoulding structure, which at least comprises two sets of suite units, and is characterized in that each suite unit comprises a pitched roof rod, a guide sleeve, a pitched roof sliding seat and a sliding block, and is arranged on an injection molding machine and an ejector plate. The mold is suitable for injection molding parts with complex attached structures, has a good demolding effect, and is safe and reliable in action, convenient to use, high in mass production efficiency, durable in use and low in manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding production, in particular to a multi-sloping top demoulding structure. Background Art

[0002] In injection molding, products often have flanges and retaining elements, making one-shot demolding impossible. Existing demolding solutions include: Option 1: Doghouse demolding with a tilted top and core pulling from a mounting hole using a cylinder or slider tunnel; Option 2: Designing a large tilted top with a reversing structure inside to achieve two-angle demolding. While Option 1 is suitable for products with retaining elements at the edge, it occupies a large space and has a complex structure. Option 2 also requires a large footprint, precluding any surrounding structures, resulting in a complex structure and high manufacturing costs. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a multi-sloped top demoulding structure to solve the above technical problems.

[0004] The technical solution adopted by this utility model is:

[0005] A multi-sloped ejector demolding structure includes two sets of kit units: kit unit 1 and kit unit 2, each kit unit includes a tilted ejector, a tilted ejector rod, a guide sleeve, a tilted ejector sliding seat and a sliding block, the kit unit 1 correspondingly includes: an upper tilted ejector, an upper tilted ejector rod, a guide sleeve 1, an upper tilted ejector sliding seat, and a large sliding block, the kit unit 2 correspondingly includes: a lower tilted ejector, a lower tilted ejector rod, a guide sleeve 2, a lower tilted ejector sliding seat, a small sliding block, and also includes an ejection plate, a punch and a bottom plate, characterized in that the upper and lower tilted ejector sliding seats are fixed on the ejection plate, and are respectively provided with oblique sliding grooves, the angle between the oblique sliding grooves and the upper surface of the ejection plate is the demolding angle, and the ejection angle of the sliding grooves of the upper tilted ejector sliding seat is The mold angle is demoulding angle one, the demoulding angle of the slide groove of the lower inclined top sliding seat is demoulding angle two, 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 three 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 one and the guide sleeve two 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 one and the guide sleeve two, 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 ejection structure is characterized in that each of the kit unit inclined ejection sliding seats is provided with an inclined sliding groove, and a demoulding angle is provided between the inclined sliding groove and the upper surface of the ejection plate.

[0008] The multi-sloped top demolding 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. The mounting hole is provided on the sliding block, and the protection rod is movably installed in the mounting hole of the sliding block, or the mounting hole is provided 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 base 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 groove, 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 groove, are inlaid with copper and graphite material sliding sheets.

[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 utility model has a scientific design and a reasonable structure. It is suitable for injection molded parts with relatively complex structures. It has a good demoulding effect, is safe and reliable, is easy to use, has high mass production efficiency, is durable, and has 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 This is a schematic diagram of a rear cover plate, which is the object of this utility model;

[0016] Figure 2 for Figure 1 A magnified schematic diagram of the M region;

[0017] Figure 3 for Figure 1 CC-direction rotation cross-sectional diagram;

[0018] Figure 4 This is a schematic diagram of another rear cover plate, which is the object of this utility model;

[0019] Figure 5 This is a three-dimensional schematic diagram of the utility model multi-sloped top demoulding structure and 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 state before ejection of the BB with downward slanting ejection;

[0023] Figure 9 for Figure 6 A schematic cross-sectional view of the AA upward inclined ejector after ejection;

[0024] Figure 10 for Figure 6 A cross-sectional view of the state after the BB is ejected with the downward slanting top;

[0025] In the figure: 1-lower inclined ejector; 2-upper inclined ejector; 3-lower inclined ejector rod; 4-upper inclined ejector rod; 5-guide sleeve 1; 6-guide sleeve 2; 7-upper inclined ejector sliding seat; 8-lower inclined ejector sliding seat; 9-ejector plate; 10-protective rod; 11-large sliding block; 12-small sliding block; 13-fixed block 1; 14-fixed block 2; P-back cover; P1-flange; K-seat; K1-hole; L-small seat; L1-small hole; X-transverse; Y-longitudinal; Z-vertical; α-angle 1; β-angle 2; μ-angle 3; ε-demolding angle 1; λ-demolding angle 2; γ-inclination angle 1; θ-inclination angle 2. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions 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 attention include "card seat", "card hole", "horizontal X", "longitudinal Y", "vertical Z", "length (side) direction", "width (side) direction", "height direction", "mold stripping 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-sloped top demoulding structure of the utility model is used for demoulding injection molded parts such as the 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 has its upper surface length (side) direction set as the horizontal X, the upper surface width (side) direction set as the longitudinal X, and the upper surface height direction set as the vertical Z. As a reference, the rear cover plate P has an attached structure including: 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 X. The holder K is provided with a card hole K1. The card hole K1 is used to install a standard buckle. The axis of the card hole K1 has an angle of angle 2β with the horizontal X. In this embodiment, the angle α is 12° and the angle 2β is 6°. It can be seen that the flange P2 of the rear cover plate P, the base K and the hole K1 are arranged at the upper and lower parts of the same side of the rear cover plate P, so they cannot be demoulded 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 based on the upper surface of the ejection plate 9 (horizontal X) as the reference, both have an angle, and their angles are different angles of angle α and angle 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 demoulding cannot be completed by the single inclined ejector mechanism of the existing technology. According to the ejection surface of the flange P2 of the rear cover P and the axis of the clamping hole K1 of the clamping seat 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 clamping hole K1 of the clamping seat K, it is necessary to demold obliquely below the flange P2 and obliquely above the clamping 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 clamping 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 structure of this embodiment is provided with two similar sets of slant ejector mechanism kit units according to the above-mentioned needs, and can also be provided with more than three sets of slant ejector mechanisms 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 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. The other set of slant ejector 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. It also includes an ejector plate, a punch and a bottom plate of an injection molding machine. Both sets of slant ejector 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 demoulding mechanism, and the lower inclined ejector 1 and the corresponding component kit unit 2 of the other set of inclined ejector demoulding mechanism, respectively correspond to the demoulding of the flange P2 of the rear cover plate P and the card hole K1 of the card 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 demoulding. They are respectively provided with an oblique sliding groove, and the oblique angle of the sliding groove (bottom surface or its center line) and the upper surface (transverse X) of the ejection plate 9 is provided, that is, the angle between the sliding groove and the demoulding angle of the upper surface of the ejection plate 9. The demoulding angle of the sliding groove of the upper inclined ejector sliding seat 7 is a demoulding angle of 1, and the demoulding angle of the sliding groove of the lower inclined ejector sliding seat 8 is a demoulding angle of 2. In this embodiment, the demoulding angle 1 ε is 15°, and the demoulding angle 2 λ is 5°. See Figure 6As shown, according to the need for the direction of the flange P2 of the rear cover plate P to be smoothly ejected from the mold, 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 (longitudinal Y) of the upper surface of the ejection plate 9. 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 (longitudinal Y) of the upper surface of the ejection plate 9. 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 11 are arranged along the longitudinal direction Y, that is, parallel to the width side direction (longitudinal Y) of the upper surface of the ejection plate 9. 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 movably mounted in the guide holes of the guide sleeve 1 5 and the guide sleeve 2 6, respectively. 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 toward 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 embodiment 1, except that, in order to increase strength, a protective mechanism is further provided, including a protective rod 10, a fixing block 13, a fixing block 2 14, and a mounting hole. The mounting hole is provided on the large sliding block 11. The protective rod 10 is movably mounted 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 base plate through the fixing block 13. During demoulding, the protective rod 10 strengthens the support for the large sliding block 11. In addition, to ensure smooth demoulding, the sliding surfaces 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-graphite sliding sheets. The copper-graphite sliding sheets provide good guiding and self-lubricating effects. 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 utility model 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 similar to the embodiment 1, except that, based on the double-slant top mechanism of the embodiment 1, Figure 4 In order to meet the need for demoulding of the additional structure of the newly added injection molding component of the rear cover P, a set of inclined ejector mechanism kit unit 3 similar to the kit unit 2 of embodiment 1 is added for demoulding of the newly added small card seat L and its small card hole L1, including an inclined ejector and corresponding components: an inclined ejector rod, a guide sleeve, an inclined ejector sliding seat, and a sliding block. The structure is equivalent to (similar to) 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 oblique The slide is installed in the inclined slide of the lifter slide. The guide sleeve is fixed to the punch. The lift rod is installed in the guide hole of the guide sleeve. The lift rod has a lift rod fixed to its upper end and is fixedly connected or hinged to the sliding block at its lower end. The demolding angle between the inclined slide (bottom or centerline) of the sliding block and the upper surface of the ejector plate 9 is set to 9°. Therefore, the angle between the installed lift rod and the upper surface of the ejector plate 9 is 81°. The angle between the slide (bottom or centerline) of the lifter slide and the width side direction (longitudinal direction Y) of the upper surface of the ejector plate 9 is 10°. The sliding surface of the sliding block and / or the lifter slide is inlaid with a copper and graphite material slide. This embodiment also adds a set of lift mechanisms, which function similarly to the lift mechanisms described in the second unit of the kit of the first embodiment, and are used to demold the corresponding small card seat L and its small card hole L1.

[0034] See also Figure 7 and Figure 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 2 14 and a mounting hole. The mounting hole is provided on the sliding block. 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 2 14, and the lower end is fixed to the base plate through the fixing block 13.

[0035] The above description is merely a general embodiment of the present invention. Those skilled in the art will readily appreciate that the present invention may have various modifications and variations, which are not exhaustively described here. However, any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection claimed by the present invention.

Claims

1. A multi-elevator demoulding structure, comprising two sets of kit units: kit unit 1 and kit unit 2, each kit unit comprising an elevator, an elevator rod, a guide sleeve, an elevator sliding seat, and a sliding block, wherein the kit unit 1 correspondingly comprises: An upper inclined top (2), an upper inclined top rod (4), a guide sleeve (5), an upper inclined top sliding seat (7), and a large sliding block (11), wherein the second kit unit comprises: a lower inclined top (1), a lower inclined top rod (3), a guide sleeve (6), a lower inclined top 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 top sliding seat (7) and the lower inclined top sliding seat (8) are fixed on the ejection plate (9), and are respectively provided with an oblique sliding groove, and a demoulding angle is provided between the oblique sliding groove and the upper surface of the ejection plate (9), the demoulding angle of the slide groove of the upper inclined top sliding seat (7) is a demoulding angle of one (ε), the demoulding angle of the slide groove of the lower inclined top sliding seat (8) is a demoulding angle of two (λ), and the upper inclined top sliding seat (7) ) and the slide groove of the lower inclined top sliding seat (8), and are respectively provided with an angle of angle three (μ) with the width side direction of the upper surface of the ejection plate (9), the large sliding block (11) and the small sliding block (12) are respectively movably installed in the oblique slide grooves of the upper inclined top sliding seat (7) and the lower inclined top sliding seat (8), the guide sleeve one (5) and the guide sleeve two (6) are both fixed on the punch, the upper inclined top rod (4) and the lower inclined top rod (3) are respectively movably installed in the guide holes of the guide sleeve one (5) and the guide sleeve two (6), and the upper end of the upper inclined top rod (4) is fixed with the upper inclined top (2), and the lower end is fixedly connected or hinged to the large sliding block (11), while the upper end of the lower inclined top rod (3) is fixed with the lower inclined top (1), and the lower end is fixedly connected or hinged to the small sliding block (12).

2. The multi-sloped top demoulding structure according to claim 1, characterized in that: Includes at least two kit units.

3. The multi-sloped top demoulding structure according to claim 2, characterized in that: Each of the kit unit inclined ejection sliding seats is respectively provided with an inclined sliding groove, and a demoulding angle is provided between the inclined sliding 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 includes 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 punch through the fixing block 2 (14), and the lower end is fixed to the base plate through the fixing block 1 (13).

5. The multi-sloped top demoulding structure according to claim 1, characterized in that: The angle μ is in the range of 0°-45°.

6. 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°.

7. The multi-sloped top demoulding structure according to claim 1, characterized in that: The first draft angle (ε) is in the range of 3°-45°, and the second draft angle (λ) is in the range of 3°-45°.

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