Demoulding mechanism and mould

Abstract

The utility model discloses a demoulding mechanism, which comprises a positioning block, a positioning block and a demoulding mechanism, the movable block comprises a first sliding block and a second sliding block, the first sliding block is arranged on the first inclined plane in a sliding mode, the side, back on to the first inclined plane, of the first sliding block protrudes outwards to form a mold core, a sliding groove is formed in the first sliding block, the sliding groove is matched with the second sliding block, the second sliding block is arranged in the sliding groove in a sliding mode, and the second sliding block abuts against the first inclined plane; the first inclined surface drives the second sliding block to slide, and a first spring is arranged between the second sliding block and the first sliding block; the ejector pin is arranged on the second sliding block, and the second sliding block drives the ejector pin to stretch out of the mold core. The first sliding block slides along the first inclined face, the positioning block drives the second sliding block to slide along the sliding groove, the second sliding block drives the ejector pin to move, the ejector pin stretches out of the mold core face, an injection molding part is separated from the mold core face, then demolding is conducted, the demolding success rate is increased, the injection molding part is prevented from being damaged by pulling, and the production stability is improved.

Description

Technical Field

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

[0002] Injection molding involves stirring completely molten plastic material with a screw at a constant temperature, injecting it into a mold cavity at high pressure, and then cooling and solidifying it to produce a molded product. After the molded part cools within the mold, it is removed by demolding. However, during demolding, the part can sometimes stick to the cavity surface, making it difficult to remove. Forced demolding can also damage the part, affecting production quality. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a demoulding mechanism and a mold that can separate the injection molded part from the cavity surface, avoid damage to the injection molded part during demoulding, and improve production stability.

[0004] According to the first aspect of the present invention, the demolding mechanism includes: a positioning block, which is provided with a first inclined surface; a movable block, including a first slider and a second slider, the first slider being slidably arranged on the first inclined surface, the first slider protruding outward on the side facing away from the first inclined surface to form a core, a sliding groove is provided inside the first slider, the sliding groove matches the second slider, the second slider is slidably arranged in the sliding groove, the second slider abuts against the first inclined surface, the first inclined surface drives the second slider to slide, and a first spring is provided between the second slider and the first slider; a ejector pin is provided on the second slider, and the second slider drives the ejector pin to extend from the core.

[0005] The demoulding mechanism according to the embodiment of the first aspect of the present invention has at least the following beneficial effects: the first slider slides along the first inclined surface, so that the positioning block drives the second slider to slide along the slide groove, the second slider drives the ejector to move, the ejector extends from the core surface, separates the injection molded part from the core surface, and then demoulding is performed, thereby improving the demoulding success rate, avoiding damage to the injection molded part, and improving production stability.

[0006] According to some embodiments of the present invention, the second slider includes a first connecting block and a second connecting block, the first connecting block is provided with a positioning hole, the ejector pin passes through the positioning hole, one end of the ejector pin is clamped in the positioning hole, and the second connecting block is connected to the first connecting block to prevent the ejector pin from falling out.

[0007] According to some embodiments of the present invention, one end of the ejector pin protrudes radially outward to form a positioning portion, the positioning portion abuts against an end surface of the positioning hole, and the second connecting block is provided with an avoidance hole matching the positioning portion.

[0008] According to some embodiments of the present invention, the second connecting block is provided with a driving portion, the driving portion protrudes from the first sliding block, the first inclined surface is provided with a groove matching the driving portion, and the driving portion is plugged into the groove.

[0009] According to some embodiments of the present invention, the first slider is provided with a limit block and a screw, the screw passes through the limit block and is connected to the first slider, the limit block protrudes from the side wall of the slide groove, the limit block is provided at one end of the slide groove close to the first inclined surface, and the limit block abuts against the second slider.

[0010] According to some embodiments of the present invention, the first sliding block is provided with a guide groove, and a second spring is provided in the guide groove.

[0011] According to some embodiments of the present invention, a plurality of ejector pins are provided.

[0012] The mold according to the embodiment of the second aspect of the present invention includes the demoulding mechanism described in the embodiment of the first aspect of the present invention.

[0013] The mold according to the embodiment of the second aspect of the utility model has at least the following beneficial effects: the first slider slides along the first inclined surface, so that the positioning block drives the second slider to slide along the slide groove, the second slider drives the ejector pin to move, the ejector pin extends from the core surface, separates the injection molded part from the core surface, and then demolding is performed, thereby improving the demolding success rate, avoiding damage to the injection molded part, and improving production stability.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figure 1 A schematic diagram of a demoulding mechanism according to an embodiment of the first aspect of the present invention;

[0017] Figure 2 A cross-sectional view of a demoulding mechanism according to an embodiment of the first aspect of the present utility model;

[0018] Figure 3 An exploded view of a movable block in a demoulding mechanism according to an embodiment of the first aspect of the present utility model;

[0019] Figure 4 This is a schematic diagram of a positioning block in the demoulding mechanism of an embodiment of the first aspect of the present utility model.

[0020] Description of reference numerals:

[0021] Positioning block 100, first inclined surface 101, groove 102;

[0022] Movable block 200 , core 210 , ejector pin 220 , positioning portion 221 , second spring 231 , guide groove 232 , first slider 240 , slide groove 241 , second slider 250 , first connecting block 251 , second connecting block 252 , driving portion 253 , limit block 261 , screw 262 , first spring 270 . DETAILED DESCRIPTION

[0023] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0024] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0025] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] Reference Figures 1 to 4The demolding mechanism of the first embodiment of the present invention includes: a positioning block 100, which is provided with a first inclined surface 101; a movable block 200, including a first slider 240 and a second slider 250, the first slider 240 is slidably arranged on the first inclined surface 101, and the first slider 240 protrudes outward on the side facing away from the first inclined surface 101 to form a core 210, a sliding groove 241 is opened inside the first slider 240, the sliding groove 241 matches the second slider 250, the second slider 250 is slidably arranged in the sliding groove 241, the second slider 250 abuts against the first inclined surface 101, the first inclined surface 101 drives the second slider 250 to slide, and a first spring 270 is provided between the second slider 250 and the first slider 240; an ejector pin 220 is arranged on the second slider 250, and the second slider 250 drives the ejector pin 220 to extend from the core 210.

[0028] The first slider 240 slides along the first inclined surface 101, causing the positioning block 100 to drive the second slider 250 to slide along the slide groove 241. The second slider 250 drives the ejector pin 220 to move. The ejector pin 220 extends from the surface of the core 210, separating the molded part from the surface of the core 210, and then demolding is performed, thereby improving the demolding success rate, avoiding damage to the molded part, and improving production stability. The second slider 250 is then driven to return to its original position by the first spring 270. One or more ejector pins 220 can be provided. In this embodiment, multiple ejector pins 220 are provided.

[0029] It is understandable that, referring to Figure 2 and Figure 3 The second slider 250 includes a first connecting block 251 and a second connecting block 252. The first connecting block 251 has a positioning hole, through which the ejector pin 220 passes. One end of the ejector pin 220 is engaged within the positioning hole. The second connecting block 252 is connected to the first connecting block 251 to prevent the ejector pin 220 from falling out. By engaging the ejector pin 220 within the positioning hole, connecting the first and second connecting blocks 251 and 252 together with fasteners, and installing the ejector pin 220 on the first connecting block 251, assembly is facilitated and efficiency is improved.

[0030] Specifically, refer to Figure 2 and Figure 3One end of the ejector pin 220 protrudes radially outward to form a positioning portion 221, which abuts against the end surface of the positioning hole. The second connecting block 252 is provided with an avoidance hole that matches the positioning portion 221. The second connecting block 252 covers the positioning hole. The ejector pin 220 is inserted into and passed through the positioning hole so that the positioning portion 221 abuts against the end surface of the positioning hole. Then, the second connecting block 252 is connected to the first connecting block 251 so that the second connecting block 252 covers the positioning hole. The positioning portion 221 is received in the avoidance hole, so that the first connecting block 251 and the second connecting block 252 can fit tightly together and prevent the ejector pin 220 from loosening from the positioning hole, so that the second slider 250 can drive the ejector pin 220 to move.

[0031] It is understandable that, referring to Figure 1 、 Figure 2 and Figure 4 The second connecting block 252 is provided with a driving portion 253, which protrudes from the first slider 240. The first inclined surface 101 is provided with a groove 102 that matches the driving portion 253, and the driving portion 253 is plugged into the groove 102. The driving portion 253 is plugged into the groove 102. When the first slider 240 moves along the first inclined surface 101, the driving portion 253 gradually slides out of the groove 102, driving the second slider 250 to move inward, driving the ejector 220 to extend out of the core 210. The first slider 240 is provided with a guide groove 232, and a second spring 231 is provided in the guide groove 232. The second spring 231 drives the first slider 240 to move along the first inclined surface 101 until the driving portion 253 is reinserted into the groove 102. The first spring 270 can stabilize the driving portion 253 in the groove 102 to prevent the ejector 220 from being accidentally triggered to extend out of the core 210 surface.

[0032] It is understandable that, referring to Figure 2 and Figure 3 The first slider 240 is provided with a limit block 261 and a screw 262. The screw 262 passes through the limit block 261 and is connected to the first slider 240. The limit block 261 protrudes from the side wall of the chute 241 and is located at the end of the chute 241 near the first inclined surface 101. The limit block 261 abuts the second slider 250. Multiple ejector pins 220 are provided. The limit block 261 is mounted to the first slider 240 via the screw 262. The limit block 261 abuts the second slider 250, preventing the first spring 270 from ejecting the second slider 250 from the chute 241.

[0033] The mold of the second embodiment of the present invention includes the demolding mechanism of the first embodiment of the present invention. The first slider 240 slides along the first inclined surface 101, causing the positioning block 100 to drive the second slider 250 to slide along the slide groove 241. The second slider 250 drives the ejector pin 220 to move. The ejector pin 220 extends from the surface of the core 210, separating the molded part from the surface of the core 210, and then demolding is performed, thereby improving the demolding success rate, avoiding damage to the molded part, and improving production stability.

[0034] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. Demolding mechanism, characterized in that: include: A positioning block is provided with a first inclined surface; The movable block includes a first slider and a second slider, the first slider being slidably arranged on the first inclined surface, the first slider having a side facing away from the first inclined surface protruding outward to form a core, a slide groove being provided inside the first slider, the slide groove being matched with the second slider, the second slider being slidably arranged in the slide groove, the second slider being in contact with the first inclined surface, the first inclined surface driving the second slider to slide, and a first spring being provided between the second slider and the first slider; An ejector pin is provided on the second slider, and the second slider drives the ejector pin to extend from the core.

2. The demoulding mechanism according to claim 1, characterized in that: The second slider includes a first connecting block and a second connecting block. The first connecting block is provided with a positioning hole. The ejector pin passes through the positioning hole. One end of the ejector pin is clamped in the positioning hole. The second connecting block is connected to the first connecting block to prevent the ejector pin from falling out.

3. The demoulding mechanism according to claim 2, characterized in that: One end of the ejector pin protrudes outward in the radial direction to form a positioning portion, the positioning portion abuts against the end surface of the positioning hole, and the second connecting block is provided with an avoidance hole matching the positioning portion.

4. The demoulding mechanism according to claim 2, characterized in that: The second connecting block is provided with a driving portion, the driving portion protruding from the first sliding block, the first inclined surface is provided with a groove matching the driving portion, and the driving portion is plug-fitted into the groove.

5. The demoulding mechanism according to claim 1, characterized in that: The first slider is provided with a limit block and a screw, the screw passes through the limit block and is connected to the first slider, the limit block protrudes from the side wall of the slide groove, the limit block is provided at one end of the slide groove close to the first inclined surface, and the limit block abuts against the second slider.

6. The demoulding mechanism according to claim 1, characterized in that: The first sliding block is provided with a guide groove, and a second spring is arranged in the guide groove.

7. The demoulding mechanism according to claim 1, characterized in that: A plurality of ejector pins are provided.

8. A mold, characterized in that The demoulding device comprises the demoulding mechanism according to any one of claims 1 to 7.

Images