Injection mold for plastic processing with convenient demolding

Abstract

The utility model relates to injection mold technical field discloses a kind of injection mold for plastics processing of easy demoulding, including lower mould and the upper mould being arranged in one side of lower mould, the inside of lower mould is provided with knockout assembly, the side of lower mould is provided with driving assembly, knockout assembly includes fixed plate, two groups of moving plate and two groups of lugs, fixed plate is fixedly connected in the inside of lower mould, moving plate and lug are all slidingly connected in the inside of lower mould, two groups of balance plate are respectively fixedly connected in the two sides of fixed plate.The injection mold for plastics processing of easy demoulding, by the cooperation between top stick and lug, and when top stick is pushed to move horizontally, top stick will promote lug longitudinal movement, and the displacement of lug will promote top block longitudinal movement, so that top block can eject plastic parts on lower mould, so that plastic parts can be quickly demoulded, avoid the case that plastic parts stick in the device, improve the working efficiency of the device.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to an injection mold for plastic processing that facilitates demolding. Background Technology

[0002] Injection molds are core equipment in the plastics processing industry. By injecting molten plastic into a cavity and allowing it to cool and solidify, they enable the mass production of various plastic parts and are widely used in many industries such as electronics, automobiles, and home appliances. Their structural design and working efficiency directly determine the precision, appearance quality, and production economy of the parts, and are of great significance to promoting the large-scale development of the manufacturing industry.

[0003] However, existing injection molds still have shortcomings in practical applications, among which the problem of inconvenient demolding is particularly prominent. Whether it is a simple or complex plastic part, after molding, it is often difficult to demold due to problems such as tight fit with the cavity and cooling adsorption. This not only makes the operation cumbersome, but also easily causes damage to the parts. Moreover, the staff often need to manually assist in completing the demolding process, which not only increases the labor intensity, but also prolongs the production cycle and leads to a decrease in production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an injection mold for plastic processing that facilitates demolding, so as to solve the problems mentioned in the background art.

[0005] This easy-to-demold plastic injection mold includes a lower mold, an upper mold, the upper mold being disposed on one side of the lower mold, an ejector assembly, the ejector assembly including two sets of movable plates and two sets of protrusions, the protrusions being semi-elliptical, the movable plates and protrusions being slidably disposed inside the lower mold, two sets of sliders being slidably disposed on the outer side of the movable plates, an ejector pin being disposed on one side of the sliders, and the ejector pin being slidably disposed inside the protrusions, the ejector pins being pushed to move longitudinally when moving laterally, the protrusions being disposed on one side of the protrusions, the displacement of the protrusions being pushed to move the ejector pins longitudinally, thereby allowing the ejector pins to eject the plastic parts adhering to the lower mold, avoiding the situation where the plastic parts are difficult to demold, and a drive assembly, the drive assembly being disposed on one side of the lower mold.

[0006] Preferably, the lower mold has a fixed plate inside, and two sets of balance plates are respectively provided on both sides of the fixed plate. The movable plate is slidably disposed on the outside of the two sets of balance plates.

[0007] Preferably, two sets of first springs are provided on one side of the movable plate, and the end of the first spring away from the movable plate is fixedly disposed with the fixed plate.

[0008] Preferably, the protrusion is semi-elliptical, and a groove is formed inside the protrusion, with the top rod slidably disposed inside the groove.

[0009] Preferably, a limiting rod is provided inside the slider, and the limiting rod is slidably disposed inside the moving plate.

[0010] Preferably, a fixing plate is provided on the outer side of the limiting rod, a push plate is slidably provided on the outer side of the limiting rod, and a second spring is provided between the push plate and the fixing plate.

[0011] Preferably, the drive assembly includes a rotary motor and a rotating column. The rotary motor is disposed on one side of the lower mold, and the rotating column is rotatably disposed on one side of the lower mold. A first threaded tube and a second threaded tube are respectively disposed at both ends of the rotating column. The end of the first threaded tube away from the rotating column is keyed to the output end of the rotary motor. A sleeve is screwed onto the outer side of both the first threaded tube and the second threaded tube. A connecting plate is disposed on one side of the sleeve. The side of the connecting plate away from the sleeve extends into the lower mold and is fixedly disposed therewith. One side of the movable plate is in contact with the moving plate.

[0012] Preferably, a protective cover is provided on one side of the lower mold, and the protective cover is located outside the rotary motor, the first threaded tube and the second threaded tube.

[0013] By adopting the above technical solution, rapid demolding of plastic parts was achieved.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the injection mold for plastic processing that facilitates demolding, through the cooperation between the ejector roller and the protrusion, when the ejector roller is pushed to move laterally, the ejector roller will push the protrusion to move longitudinally, and the displacement of the protrusion will push the ejector block to move longitudinally, thereby enabling the ejector block to eject the plastic part on the lower mold, thus enabling the plastic part to be demolded quickly, avoiding the situation where the plastic part sticks in the device, and improving the working efficiency of the device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a side view of the structure of this utility model; Figure 2 This is a schematic diagram of the lower mold of this utility model; Figure 3 This is a partial structural cross-sectional view of the lower mold of this utility model; Figure 4This is a structural cross-sectional view of the protective cover and lower mold of this utility model; Figure 5 This is a schematic diagram of the ejection assembly of this utility model; Figure 6 This is a schematic diagram of the structure of the fixing plate of this utility model; Figure 7 This is a cross-sectional view of the slider of this utility model; Figure 8 This is a schematic diagram of the structure of the drive component of this utility model.

[0017] In the diagram: 1. Lower mold; 2. Ejector assembly; 201. Fixed plate; 202. Moving plate; 203. Ejector block; 204. Protrusion; 205. Ejector roller; 206. Slider; 207. Slide groove; 208. Anti-detachment block; 209. Balance plate; 210. First spring; 211. Limiting rod; 212. Push plate; 213. Second spring; 214. Fixed plate; 3. Drive assembly; 301. Rotary motor; 302. Connecting plate; 303. First threaded tube; 304. Rotating column; 305. Sleeve; 306. Second threaded tube; 307. Movable plate; 4. Upper mold; 5. Protective cover. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0020] Please see Figure 1-8 This utility model provides a technical solution: a plastic processing injection mold that is easy to demold, including a lower mold 1 and an upper mold 4 disposed on one side of the lower mold 1. An ejection component 2 is disposed inside the lower mold 1, and a driving component 3 is disposed on one side of the lower mold 1.

[0021] Please see Figure 2-8The ejector assembly 2 includes a fixed plate 201, two sets of movable plates 202, and two sets of protrusions 204. The fixed plate 201 is fixedly connected to the inside of the lower mold 1. The movable plates 202 and protrusions 204 are slidably connected to the inside of the lower mold 1. Two sets of balance plates 209 are fixedly connected to both sides of the fixed plate 201, and the movable plates 202 are slidably connected to the outside of the two sets of balance plates 209. Two sets of first springs 210 are fixedly connected to one side of the movable plates 202, with the first springs 210 being away from the movable plates 202. One end is fixedly connected to the fixed plate 201. A slider 206 is slidably connected to the outside of the movable plate 202. Two sets of anti-detachment blocks 208 are fixedly connected to the outside of the movable plate 202. The two sets of anti-detachment blocks 208 are located on one side of the two sets of sliders 206 respectively. A top rod 205 is fixedly connected to one side of the slider 206. A top block 203 is fixedly connected to one side of the protrusion 204. The protrusion 204 is semi-elliptical. A groove 207 is opened inside the protrusion 204, and the top rod 205 is slidably connected inside the groove 207.

[0022] Specifically, in order to maintain the balance of slider 206, a limiting rod 211 is fixedly connected inside slider 206, and the limiting rod 211 is slidably connected inside moving plate 202. Thus, on the one hand, the limiting rod 211 maintains the balance of slider 206 during movement, preventing slider 206 from becoming unbalanced and wobbling during movement, and ensuring the normal displacement of slider 206. On the other hand, the limiting rod 211 maintains the direction of slider 206, preventing the device from failing due to misalignment of slider 206, and ensuring the normal displacement of slider 206.

[0023] Meanwhile, in order to enable the slider 206 to move back quickly, a fixed plate 214 is fixedly connected to the outside of the limiting rod 211, and a push plate 212 is slidably connected to the outside of the limiting rod 211. A second spring 213 is fixedly connected between the push plate 212 and the fixed plate 214. Thus, when the slider 206 is pushed, the push plate 212 will be squeezed by the moving plate 202. At this time, the second spring 213 will be squeezed by the push plate 212. When the slider 206 is no longer pushed, the second spring 213 will bounce the slider 206 back quickly by bouncing the fixed plate 214 and the limiting rod 211.

[0024] When the movable plate 202 is pushed, the movable plate 202 will push the two sets of sliders 206 to move laterally. The displacement of the sliders 206 will push the ejector 205 to move laterally. The displacement of the ejector 205 will push the protrusion 204 to move longitudinally. The displacement of the protrusion 204 will push the ejector 205 and the slider 206 to move longitudinally. At the same time, the displacement of the protrusion 204 will push the ejector block 203 to move longitudinally, thereby causing the ejector block 203 to eject the plastic part from the lower mold 1.

[0025] Please see Figure 4 and Figure 8The drive assembly 3 includes a rotary motor 301 and a rotating column 304. The rotary motor 301 is located on one side of the lower mold 1 and is a bidirectional motor, meaning its output can rotate forward or backward. The rotating column 304 is rotatably located on one side of the lower mold 1. A first threaded tube 303 and a second threaded tube 306 are respectively provided at both ends of the rotating column 304. The threads on the outer sides of the first threaded tube 303 and the second threaded tube 306 are in opposite directions. The end of the first threaded tube 303 away from the rotating column 304 is keyed to the output end of the rotary motor 301. Sleeves 305 are screwed onto the outer sides of both the first threaded tube 303 and the second threaded tube 306. When the first threaded tube 303 and the second threaded tube 306 rotate, the two sets of sleeves 305 will move towards each other or away from each other. A connecting plate 302 is provided on one side of the sleeve 305. The side of the connecting plate 302 away from the sleeve 305 extends into the lower mold 1 and is fixedly installed with a movable plate 307. One side of the movable plate 307 contacts the movable plate 202, and the movable plate 307 is slidably connected to the outside of the two sets of balance plates 209. A protective cover 5 is provided on one side of the lower mold 1. The protective cover 5 is located outside the rotary motor 301, the first threaded tube 303 and the second threaded tube 306. Thus, the rotary motor 301, the first threaded tube 303 and the second threaded tube 306 can be protected by the protective cover 5. After the rotary motor 301 is turned on, the output end of the rotary motor 301 will drive the first threaded tube 303 to rotate. The rotation of the first threaded tube 303 will drive the second threaded tube 306 to rotate by driving the rotating column 304. The rotation of the first threaded tube 303 and the second threaded tube 306 will drive the two sets of sleeves 305 to move linearly. The displacement of the sleeves 305 will push the connecting plate 302 to move laterally. The displacement of the connecting plate 302 will push the movable plate 307 to move laterally. The displacement of the movable plate 307 will push the movable plate 202 to move laterally.

[0026] This easy-to-demold plastic injection mold, through the cooperation between the ejector roller 205 and the protrusion 204, allows the ejector roller 205 to push the protrusion 204 to move longitudinally when the ejector roller 205 is pushed to move laterally. The displacement of the protrusion 204 will push the ejector block 203 to move longitudinally, thereby allowing the ejector block 203 to eject the plastic part from the lower mold 1. This enables the plastic part to be demolded quickly, avoids the plastic part sticking to the device, and improves the working efficiency of the device.

[0027] In use, the upper mold 4 is removed from the lower mold 1, and then the rotary motor 301 is turned on so that its output end drives the first threaded tube 303 to rotate. The rotation of the first threaded tube 303 will drive the second threaded tube 306 to rotate by driving the rotating column 304. The rotation of the first threaded tube 303 and the second threaded tube 306 will drive the two sets of sleeves 305 to move linearly. The displacement of the sleeves 305 will push the connecting plate 302 to move laterally. The displacement of the connecting plate 302 will push the movable plate 307 to move laterally. The displacement of plate 307 will push the moving plate 202 to move laterally. When the moving plate 202 is pushed, the moving plate 202 will push the two sets of sliders 206 to move laterally. The displacement of sliders 206 will push the ejector 205 to move laterally. The displacement of ejector 205 will push the protrusion 204 to move longitudinally. The displacement of protrusion 204 will push ejector 205 and slider 206 to move longitudinally. At the same time, the displacement of protrusion 204 will push the ejector block 203 to move longitudinally, thereby causing the ejector block 203 to eject the plastic part in the lower mold 1.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A convenient injection mold for plastic processing, characterized in that, include: Lower mold (1); Upper mold (4), the upper mold (4) is disposed on one side of the lower mold (1); Ejection assembly (2), comprising two sets of movable plates (202) and two sets of protrusions (204), wherein the movable plates (202) and protrusions (204) are slidably disposed inside the lower mold (1), and two sets of sliders (206) are slidably disposed on the outer side of the movable plates (202), wherein a push rod (205) is disposed on one side of the slider (206), and the push rod (205) is slidably disposed inside the protrusions (204), wherein a push block (203) is disposed on one side of the protrusions (204); and A drive assembly (3) is disposed on one side of the lower mold (1).

2. The injection mold for plastic processing that facilitates demolding according to claim 1, characterized in that, The lower mold (1) is provided with a fixed plate (201) inside, and two sets of balance plates (209) are provided on both sides of the fixed plate (201). The movable plate (202) is slidably disposed on the outside of the two sets of balance plates (209).

3. The injection mold for plastic processing that facilitates demolding according to claim 2, characterized in that, Two sets of first springs (210) are provided on one side of the movable plate (202), and the end of the first spring (210) away from the movable plate (202) is fixedly disposed with the fixed plate (201).

4. The injection mold for plastic processing that facilitates demolding according to claim 1, characterized in that, The protrusion (204) is semi-elliptical, and a groove (207) is provided inside the protrusion (204), and the top rod (205) is slidably disposed inside the groove (207).

5. The injection mold for plastic processing that facilitates demolding according to claim 1, characterized in that, The slider (206) is provided with a limiting rod (211) inside, and the limiting rod (211) is slidably disposed inside the moving plate (202).

6. The injection mold for plastic processing that facilitates demolding according to claim 5, characterized in that, A fixing plate (214) is provided on the outside of the limiting rod (211), and a push plate (212) is slidably provided on the outside of the limiting rod (211). A second spring (213) is provided between the push plate (212) and the fixing plate (214).

7. The injection mold for plastic processing that facilitates demolding according to claim 1, characterized in that, The drive assembly (3) includes a rotary motor (301) and a rotating column (304). The rotary motor (301) is disposed on one side of the lower mold (1). The rotating column (304) is rotatably disposed on one side of the lower mold (1). The two ends of the rotating column (304) are respectively provided with a first threaded tube (303) and a second threaded tube (306). The end of the first threaded tube (303) away from the rotating column (304) is keyed to the output end of the rotary motor (301). The outer sides of the first threaded tube (303) and the second threaded tube (306) are both screwed with sleeves (305). A connecting plate (302) is disposed on one side of the sleeve (305). The side of the connecting plate (302) away from the sleeve (305) extends into the lower mold (1) and is fixedly disposed with a movable plate (307). One side of the movable plate (307) is in contact with a moving plate (202).

8. The injection mold for plastic processing with convenient demolding according to claim 7, characterized in that, A protective cover (5) is provided on one side of the lower mold (1). The protective cover (5) is located outside the rotary motor (301), the first threaded tube (303), and the second threaded tube (306).

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