Repeated ejection demolding material taking mechanism

Abstract

The utility model discloses a multi-time ejection demoulding material taking mechanism, which comprises a slide block seat, a forming slide block, a first insert core slide block and a second insert core slide block, the side end of the slide block seat is provided with the forming slide block, the outer end of the forming slide block is provided with a product forming cavity, the first insert core slide block is slidably and elastically arranged in the forming slide block, and the second insert core slide block is arranged in the product forming cavity. A first insert core sliding block is installed in the first insert core sliding block and abuts against the side wall of the inner ring of the product, a second insert core sliding block is elastically and slidably installed in the first insert core sliding block and abuts against the bottom of the inner ring of the product, and after mold opening, the first insert core sliding block and the second insert core sliding block are sequentially demolded. According to the mode, the two-time insert core sliding block ejection structure is additionally arranged, and the ejection is mistakenly opened, so that the outer ring and the inner ring of the circle structure of the product are sequentially demolded, and the product is prevented from being damaged by sticking to the mold.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a multiple ejection, demoulding and material taking mechanism. Background Art

[0002] Injection molding products such as Figure 1 As shown, the raw material of the product is PPSU, which is an amorphous thermoplastic with high transparency, high hydrolysis stability and strong viscosity. The die position of the product is a mirror surface, which is easy to stick to the film. The product is partially provided with a round structure. The molding slider needs to contact the inside and outside of the circle structure 00, which is not easy to demould and is easy to stick to the mold and damage the product. The existing die structure is as follows Figure 2 As shown, the normal slider mold opening method is adopted, and the mold slider is small and not easy to be pulled out first. Based on the above defects and shortcomings, it is necessary to improve the existing technology and design a multiple ejection demoulding and material collection mechanism. Utility Model Content

[0003] The main technical problem solved by the utility model is to provide a multiple ejection demoulding and material taking mechanism, which can eject the outer and inner circles of the product circular structure in turn by adding two sub-sliders to eject the structure and stagger the ejections, thereby avoiding mold sticking and damaging the product.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a multiple ejection demoulding and material taking mechanism, which includes a slider seat, a molding slider, a first entry slider and a second entry slider, the side end of the slider seat is installed with a molding slider, the outer end of the molding slider is provided with a product molding cavity, the first entry slider is elastically installed in the molding slider for sliding, the first entry slider is abutted against the side wall of the inner ring of the product, the second entry slider is elastically installed in the first entry slider for sliding, the second entry slider is abutted against the bottom of the inner ring of the product, and after the mold is opened, the first entry slider and the second entry slider are demoulded in turn.

[0005] Preferably, the demoulding stroke of the second sub-slider is greater than the demoulding stroke of the first sub-slider.

[0006] Preferably, the first sub-slider includes an inner ring forming portion, a guide portion and a limit portion with increasing shaft diameter from left to right, a bottom plate is installed at the right end of the first sub-slider, a cover plate is installed on the upper part of the bottom plate, the cover plate blocks the limit portion, and the bottom plate and the slider seat are elastically connected by a plurality of return springs.

[0007] Preferably, the head of the second sub-slider is provided with a boss for forming the bottom surface of the inner ring of the product, the first sub-slider is axially provided with a stepped through hole for slidingly placing the second sub-slider, the second sub-slider is slidably installed in the stepped through hole, and the bottom of the second sub-slider is provided with a spring mounting hole, in which a spring is installed, and the lower part of the spring is against the cover plate.

[0008] Compared with the prior art, the beneficial effects of the utility model are:

[0009] By adding two sub-sliders to eject the structure and staggering the ejections, the outer and inner circles of the circular structure of the product can be demoulded in sequence to avoid sticking to the mold and damaging the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the product structure.

[0011] Figure 2 This is a schematic diagram of the existing die structure of the product.

[0012] Figure 3 The figure is a schematic diagram of the structure of a multiple ejection, demoulding and material taking mechanism.

[0013] Figure 4 The expanded view is a multiple ejection demoulding and material collection mechanism.

[0014] Figure 5 It is a cross-sectional view of a multiple ejection, demoulding and material taking mechanism.

[0015] Figure 6 The figure is a schematic diagram of the structure of the first entry slider of a multiple ejection, demoulding and material taking mechanism.

[0016] Figure 7 It is a partial cross-sectional view of a multiple ejection, demoulding and material taking mechanism.

[0017] Among them, 00, circle structure, 1, slider seat, 2, molded slider, 3, first entry slider, 30, stepped through hole, 31, inner ring molding part, 32, guide part, 33, limiting part, 4, second entry slider, 41, boss, 5, bottom plate, 6, cover plate, 7, reset spring, 8, spring. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0019] See also Figures 3 to 7 , the utility model embodiment includes:

[0020] A multiple ejection demoulding and material taking mechanism, the multiple ejection demoulding and material taking mechanism comprises a slider seat 1, a molding slider 2, a first entry slider 3, a second entry slider 4, a bottom plate 5, 6, a cover plate 7, a reset spring and a spring 8, the slider seat 1 is provided with a molding slider 2 at the side end, the molding slider 2 is provided with a product molding cavity at the outer end, the molding slider 2 is elastically provided with a first entry slider 3 slidingly installed inside, the first entry slider 3 is abutted against the side wall of the inner circle of the product, the first entry slider 3 is elastically provided with a second entry slider 4 slidingly installed inside, the second entry slider 4 is abutted against the bottom of the inner circle of the product, after the mold is opened, the first entry slider 3 and the second entry slider 4 are demoulded in sequence, and by adding two ejection structures, the inner and outer circles of the product circle structure are demoulded in sequence to avoid sticking to the mold and pulling the product.

[0021] The first entry slider 3 includes an inner ring forming part 31, a guide part 32 and a limit part 33 with increasing axial diameters from left to right. A bottom plate 5 is installed at the right end of the first entry slider 3, and a cover plate 6 is installed on the upper part of the bottom plate 5. The cover plate 6 blocks the limit part 33. The bottom plate 5 and the slider seat 1 are elastically connected by a plurality of reset springs 7. In the mold closing state, the reset spring 7 is in a compressed state, and the inner ring forming part 31 is flush with the forming part of the forming slider 2, which is used for forming the product circular structure. When the mold is opened, the forming slider 2 retreats, and the first entry slider 3 supports the local circular structure of the product under the elastic force of the reset spring 7, and the periphery of the product circular structure is demolded first.

[0022] The head of the second sub-slider 4 is provided with a boss 41 for molding the bottom surface of the inner ring of the product. The first sub-slider 3 is axially provided with a stepped through hole 30 for slidingly placing the second sub-slider 4. The second sub-slider 4 is slidably installed in the stepped through hole 30. The bottom of the second sub-slider 4 is provided with a spring mounting hole 40. The spring mounting hole 40 is installed with a spring 8. The lower part of the spring 8 is against the cover plate 6. In the mold closing state, the spring 8 is in a compressed state. The boss 41 is flush with the molding part of the molding slider 2, which is used for molding the circular structure of the product. When the mold is opened, the molding slider 2 retreats, and the second sub-slider 4 supports the bottom of the product circular structure under the elastic force of the spring 8, and the periphery of the product circular structure is demolded first.

[0023] The demoulding stroke of the second sub-slider 4 is greater than the demoulding stroke of the first sub-slider 3, the elastic force of the spring 8 is greater than the elastic force of the return spring 7, the product raw material is PPSU, a high-temperature raw material with strong viscosity, and after the outer ring of the product circular structure is demoulded, the inner ring will still stick to the mold, which may damage the product. The first sub-slider 3 is demoulded before the second sub-slider 4, and the inner ring of the product circular structure is demoulded.

[0024] When the multiple ejection demoulding and material taking mechanism of the utility model is working, in the mold closing state, the reset spring 7 and the spring 8 are both in a compressed state, the molding slide block 2, the first sub-slide block 3 and the second sub-slide block 4 are used for product molding, and the mold is opened after the product is molded, the molding slide block 2 retreats, and the first sub-slide block 3 and the second sub-slide block 4 are still extended to support the local circle of the product under the elastic force of their respective springs, and the periphery of the product circle structure is demoulded first. Since the demoulding stroke of the first sub-slide block 3 is smaller than that of the second sub-slide block 4, the second sub-slide block 4 abuts against the bottom of the product circle structure 00, and the first sub-slide block 3 retreats with the molding slide block 2 to demould the inner circle of the product circle structure, and finally the second sub-slide block 4 retreats with the molding slide block 2, and the product demoulding is completed.

[0025] The utility model discloses a multiple ejection demoulding and material taking mechanism, which adds two sub-slide block ejection structures and ejects them staggered, so that the outer and inner circles of the circular structure of the product are demoulded in sequence, and the product is prevented from being stuck to the mold and being pulled.

[0026] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A multiple ejection demoulding and material taking mechanism, characterized in that: It includes a slider seat, a molding slider, a first entry slider and a second entry slider. The side end of the slider seat is installed with a molding slider, the outer end of the molding slider is provided with a product molding cavity, the first entry slider is elastically installed in the molding slider for sliding, the first entry slider is abutted against the side wall of the inner ring of the product, the second entry slider is elastically installed in the first entry slider for sliding, the second entry slider is abutted against the bottom of the inner ring of the product, and after the mold is opened, the first entry slider and the second entry slider are demolded in sequence.

2. A multiple ejection demoulding and material taking mechanism according to claim 1, characterized in that: The demoulding stroke of the second sub-slider is greater than the demoulding stroke of the first sub-slider.

3. A multiple ejection demoulding and material taking mechanism according to claim 1, characterized in that: The first entry slider includes an inner ring forming part, a guide part and a limit part with increasing shaft diameter from left to right. A bottom plate is installed at the right end of the first entry slider, and a cover plate is installed on the upper part of the bottom plate. The cover plate blocks the limit part. The bottom plate and the slider seat are elastically connected by a plurality of return springs.

4. A multiple ejection demoulding and material taking mechanism according to claim 3, characterized in that: The head of the second sub-slider is provided with a boss for forming the bottom surface of the inner ring of the product, the first sub-slider is axially provided with a stepped through hole for slidingly placing the second sub-slider, the second sub-slider is slidably installed in the stepped through hole, the bottom of the second sub-slider is provided with a spring mounting hole, a spring is installed in the spring mounting hole, and the lower part of the spring is against the cover plate.

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