Injection molding machine for producing plastic parts

Abstract

The utility model discloses an injection molding machine for producing plastic parts, which comprises an injection molding machine main body, the injection molding machine main body comprises an operation box, an electric push rod is fixedly mounted in the operation box, and a first mold is fixedly mounted at the output end of the electric push rod; a mold changing assembly and a demolding assembly are arranged between the electric push rod and the first mold; the die changing assembly comprises a rotating outer ring rotationally connected to the back face of the first die, a plurality of slope abutting blocks are evenly fixed to the inner side of the rotating outer ring, an inner fixing ring is arranged on the inner side of the rotating outer ring, the inner fixing ring is connected with a piston rod of an electric push rod in an inserted mode, and a movable groove is formed in the inner fixing ring. A movable column is slidably connected into the movable groove, and one end of the movable column is connected with the electric push rod in an inserted mode. By rotating the rotating outer ring, the slope abutting block moves along with the rotating outer ring, so that the movable column moves outwards and is pulled out of the locking groove, and the mold can be quickly disassembled.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, and specifically relates to an injection molding machine for plastic part production. Background Technique

[0002] The published patent No. CN214324098U discloses an injection molding machine for plastic part production, which includes a base. On one side of the upper surface of the base, a feeding hole is opened. On one side inside the base, a placement groove is opened. On one side of the top of the base, an operation box is installed. On one side inside the operation box, a support plate is installed. At the center position of the outer wall on one side of the support plate, a telescopic cylinder A is installed. The other end of the telescopic cylinder A is installed with a mounting plate A. On the outer wall on one side of the operation box, a through hole A is opened. Above and below the outer wall on the other side of the mounting plate A, connecting rods are installed. The other end of the connecting rod passes through the through hole A and is connected to a template A. Through holes B are opened on the surface of the template A. This device solves the problem of the injection molding machine producing and processing plastic parts, improves the production efficiency of the injection molding machine and the quality of the produced products. At the same time, the structure of the injection molding machine is simple, easy to operate, and has strong practicability. However, the following problems still exist in the actual use of this patent:

[0003] In order to achieve automatic demoulding, an additional telescopic cylinder is added to the above device, resulting in a substantial additional increase in the equipment cost and use cost of the injection molding machine, which is not conducive to popularization. In existing injection molding machines, the molds that need to be moved are all connected to the telescopic cylinder through a number of bolts. To ensure firm installation, these bolts all need to be tightened, resulting in inconvenience when disassembling and maintaining the molds. And because threaded holes need to be opened on the molds, long-term use will cause the threaded holes to become stripped, affecting the service life of the molds.

[0004] An injection molding machine for plastic part production is proposed to solve the problems raised above. Content of the Utility Model

[0005] The purpose of the utility model is to provide an injection molding machine for plastic part production, so as to solve the problems in the above background technique that in order to achieve automatic demoulding, an additional telescopic cylinder is added to the above device, resulting in a substantial additional increase in the equipment cost and use cost of the injection molding machine, which is not conducive to popularization. In existing injection molding machines, the molds that need to be moved are all connected to the telescopic cylinder through a number of bolts. To ensure firm installation, these bolts all need to be tightened, resulting in inconvenience when disassembling and maintaining the molds. And because threaded holes need to be opened on the molds, long-term use will cause the threaded holes to become stripped, affecting the service life of the molds.

[0006] To achieve the above object, the present utility model provides the following technical solution: An injection molding machine for plastic part production, including an injection molding machine main body, the injection molding machine main body includes an operation box, an electric push rod is fixedly installed inside the operation box, and a first mold is fixedly installed at the output end of the electric push rod;

[0007] A mold changing component and a demolding component are arranged between the electric push rod and the first mold;

[0008] Among them, the mold changing component includes a rotating outer ring rotatably connected to the back of the first mold, a number of inclined surface abutting blocks are evenly fixed inside the rotating outer ring, an inner fixed ring is arranged inside the rotating outer ring, the inner fixed ring is inserted into the piston rod of the electric push rod, a number of movable grooves are evenly opened on the inner fixed ring, a movable column is slidably connected inside the movable groove, a first spring is sleeved outside the movable column, one end of the movable column is inserted into the electric push rod, the other end of the movable column is fixedly connected with a limiting backing plate, and an auxiliary hemisphere is fixedly connected to the outside of the limiting backing plate;

[0009] Among them, the demolding component includes a moving plate slidably sleeved outside the piston rod of the electric push rod, a number of push columns evenly distributed are fixedly connected to one side of the moving plate close to the first mold, the push columns penetrate through the first mold, and a number of abutting columns are fixedly connected to the outside of the operation box.

[0010] Preferably, the outer side of the first spring fits with the inner wall of the movable groove, one end of the first spring is fixedly connected with the inner wall of the movable groove, the other end of the first spring is fixedly connected with the limiting backing plate, the auxiliary hemisphere fits with the inclined surface abutting block, the inner fixed ring is fixedly connected to the back of the first mold, and the piston rod of the electric push rod fits with the inner wall of the inner fixed ring.

[0011] Preferably, a number of locking grooves and an anti-deviation groove are evenly opened on the outer side of the piston rod of the electric push rod, the locking grooves are inserted into the movable columns, an anti-deviation block is fixedly connected to the inside of the inner fixed ring, and the anti-deviation block is engaged with the anti-deviation groove.

[0012] Preferably, a convex plate is fixedly connected to the outside of the rotating outer ring, a positioning pin is slidably connected to the convex plate, a pull ring is fixedly connected to one end of the positioning pin, a positioning sleeve is inserted into the other end of the positioning pin, the positioning sleeve is fixedly installed on the back of the first mold, and the abutting column can fit with the moving plate.

[0013] Preferably, a second spring is fixedly connected between the pull ring and the convex plate, and the second spring is sleeved outside the positioning pin.

[0014] Preferably, a third spring is fixedly connected between the moving plate and the first mold, and the third spring is sleeved outside the push column.

[0015] Preferably, one end of the push rod passing through the first mold is fixedly connected with a sealing pad, and the sealing pad fits with the inner surface of the first mold.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: for the injection molding machine for producing plastic parts, by rotating the rotating outer ring, the inclined surface abutting block moves along with the rotating outer ring, so that the movable column moves outward and is withdrawn from the locking groove, and finally pulling the first mold can complete the rapid disassembly, avoiding the inconvenience of mold disassembly and maintenance caused by the use of bolts, and realizing the automatic falling off of toy parts without additional components, which is convenient for popularization. The specific content is as follows:

[0017] 1. By pulling the pull ring, the positioning pin is withdrawn from the positioning sleeve, and then by rotating the rotating outer ring, the inclined surface abutting block moves along with the rotating outer ring, so that the movable groove pushes the limiting backing plate to move outward, and moves along with the extrusion point of the inclined surface abutting block on the auxiliary hemisphere, so that the movable column moves outward and is withdrawn from the locking groove, and finally pulling the first mold can complete the rapid disassembly of the first mold, avoiding the inconvenience of mold disassembly and maintenance caused by the use of bolts.

[0018] 2. By making the moving plate contact with the abutting column, the push rod pushes the sealing pad, so that the injection-molded toy parts automatically fall off, avoiding the use of additional components, reducing the equipment cost and the use cost, and most of the parts of the demolding assembly are installed on the first mold, with less modification to the structure of the existing injection molding machine, which is convenient for popularization. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front structural schematic diagram of the present utility model;

[0020] Figure 2 is Figure 1 an enlarged structural schematic diagram at A in

[0021] Figure 3 is a side view mounting structural schematic diagram of the rotating outer ring;

[0022] Figure 4 is Figure 3 an enlarged structural schematic diagram at C in

[0023] Figure 5 is Figure 1 an enlarged structural schematic diagram at B in

[0024] In the figure: 1. Injection molding machine body; 101. Operation box; 102. Electric push rod; 103. First mold; 2. Mold changing assembly; 201. Rotating outer ring; 202. Inclined support block; 203. Inner fixed ring; 204. Movable groove; 205. Movable column; 206. First spring; 207. Limiting pad; 208. Auxiliary hemisphere; 209. Locking groove; 210. Anti-deviation block; 211. Anti-deviation groove; 212. Convex plate; 213. Positioning pin; 214. Positioning sleeve; 215. Second spring; 216. Pull ring; 3. Demolding assembly; 301. Moving plate; 302. Support column; 303. Push column; 304. Closing pad; 305. Third spring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figures 1 - 5 The utility model provides a technical solution: an injection molding machine for producing plastic parts, comprising an injection molding machine body 1, the injection molding machine body 1 comprising an operation box 101, an electric push rod 102 is fixedly installed inside the operation box 101, and a first mold 103 is fixedly installed at the output end of the electric push rod 102;

[0027] A mold changing assembly 2 and a demoulding assembly 3 are provided between the electric push rod 102 and the first mold 103;

[0028] Among them, the mold changing assembly 2 includes a rotating outer ring 201 rotatably connected to the back side of the first mold 103, a plurality of inclined surface blocks 202 are evenly fixed on the inner side of the rotating outer ring 201, an inner fixed ring 203 is provided on the inner side of the rotating outer ring 201, the inner fixed ring 203 is plugged into the piston rod of the electric push rod 102, a plurality of movable grooves 204 are evenly opened on the inner fixed ring 203, the inner part of the movable groove 204 is slidably connected to a movable column 205, the outer part of the movable column 205 is sleeved with a first spring 206, one end of the movable column 205 is plugged into the electric push rod 102, the other end of the movable column 205 is fixedly connected to a limiting pad 207, the outer side of the limiting pad 207 is fixedly connected to an auxiliary hemisphere 208; the number of inclined surface blocks 202 is not less than six.

[0029] Among them, the demolding assembly 3 includes a moving plate 301 slidably sleeved outside the piston rod of the electric push rod 102. A plurality of push columns 303 evenly distributed are fixedly connected to one side of the moving plate 301 close to the first mold 103. The push columns 303 are connected through the first mold 103. A plurality of abutting columns 302 are fixedly connected to the outer side of the operation box 101; the number of the abutting columns 302 is not less than two. A through hole is formed in the middle of the moving plate 301 to facilitate the electric push rod 102 to pass through. The number of the push columns 303 is not less than four, and the inclined surface abutting block 202 can limit the movement of the movable column 205.

[0030] The outer side of the first spring 206 is attached to the inner wall of the movable groove 204. One end of the first spring 206 is fixedly connected to the inner wall of the movable groove 204, and the other end of the first spring 206 is fixedly connected to the limit backing plate 207. The auxiliary hemisphere 208 is attached to the inclined surface abutting block 202. The inner fixing ring 203 is fixedly connected to the back of the first mold 103. The piston rod of the electric push rod 102 is attached to the inner wall of the inner fixing ring 203; the inner side of the first spring 206 is attached to the movable column 205, so that the movable column 205 cannot shake.

[0031] A plurality of locking grooves 209 and a deviation prevention groove 211 are evenly formed on the outer side of the piston rod of the electric push rod 102. The locking grooves 209 are inserted into the movable column 205. A deviation prevention block 210 is fixedly connected to the inner side of the inner fixing ring 203. The deviation prevention block 210 is engaged with the deviation prevention groove 211; the deviation prevention block 210 and the deviation prevention groove 211 can limit the orientation when the first mold 103 is installed, avoiding the situation that the movable column 205 cannot be aligned with the locking groove 209.

[0032] A convex plate 212 is fixedly connected to the outer side of the rotating outer ring 201. A positioning pin 213 is slidably connected to the convex plate 212. One end of the positioning pin 213 is fixedly connected to a pull ring 216. The other end of the positioning pin 213 is inserted with a positioning sleeve 214. The positioning sleeve 214 is fixedly installed on the back of the first mold 103. The abutting column 302 and the moving plate 301 can be attached; a second spring 215 is fixedly connected between the pull ring 216 and the convex plate 212. The second spring 215 is sleeved outside the positioning pin 213; the second spring 215 can pull the positioning pin 213 to be always inserted into the positioning sleeve 214, avoiding the random rotation of the rotating outer ring 201.

[0033] A third spring 305 is fixedly connected between the moving plate 301 and the first mold 103. The third spring 305 is sleeved outside the push column 303; one end of the push column 303 passing through the first mold 103 is fixedly connected with a sealing pad 304. The sealing pad 304 is attached to the inner surface of the first mold 103; the third spring 305 will push the push column 303 to move outwards, so that the sealing pad 304 is always embedded in the inner surface of the first mold 103. The number of the push columns 303 is not less than four.

[0034] Working principle: Before using the injection molding machine for producing a certain plastic part, it is necessary to first check the overall condition of the device to ensure that it can work properly. According to Figure 1 - Figure 5 As shown, when it is necessary to disassemble the first mold 103, first pull the pull ring 216 to make the positioning pin 213 pull out from the positioning sleeve 214, and then rotate the rotating outer ring 201 so that the inclined surface abutting block 202 moves along with the rotating outer ring 201, thereby making the movable slot 204 push the limit backing plate 207 to move outward, and as the extrusion point of the inclined surface abutting block 202 on the auxiliary hemisphere 208 moves, the movable column 205 moves outward and pulls out from the locking slot 209. Finally, pulling the first mold 103 can complete the rapid disassembly of the first mold 103, avoiding the inconvenience of disassembling and maintaining the first mold 103 caused by the use of bolts;

[0035] When the injection molding is completed and the electric push rod 102 contracts so that the moving plate 301 contacts the abutting column 302, the moving plate 301 slides on the electric push rod 102, and then the push column 303 pushes the sealing pad 304 to make the injection-molded toy parts fall off automatically, avoiding the use of additional components, reducing the equipment cost and the use cost, and most of the parts of the demolding assembly 3 are installed on the first mold 103, with less modification to the existing injection molding machine structure, which is convenient for popularization.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An injection molding machine for producing plastic parts, comprising an injection molding machine main body (1), the injection molding machine main body (1) includes an operation box (101), an electric push rod (102) is fixedly installed inside the operation box (101), and a first mold (103) is fixedly installed at the output end of the electric push rod (102); It is characterized in that It further includes: A mold changing component (2) and a demolding component (3) are arranged between the electric push rod (102) and the first mold (103); Among them, the mold changing component (2) includes a rotating outer ring (201) rotatably connected to the back of the first mold (103), a number of inclined surface abutting blocks (202) are evenly fixed on the inner side of the rotating outer ring (201), an inner fixed ring (203) is arranged on the inner side of the rotating outer ring (201), the inner fixed ring (203) is inserted into the piston rod of the electric push rod (102), a number of moving grooves (204) are evenly opened on the inner fixed ring (203), a moving column (205) is slidably connected inside the moving groove (204), a first spring (206) is sleeved outside the moving column (205), one end of the moving column (205) is inserted into the electric push rod (102), the other end of the moving column (205) is fixedly connected with a limiting backing plate (207), and an auxiliary hemisphere (208) is fixedly connected to the outer side of the limiting backing plate (207); Among them, the demolding component (3) includes a moving plate (301) slidably sleeved outside the piston rod of the electric push rod (102), a number of evenly distributed push columns (303) are fixedly connected to one side of the moving plate (301) close to the first mold (103), the push columns (303) penetrate through the first mold (103), and a number of abutting columns (302) are fixedly connected to the outside of the operation box (101).

2. An injection molding machine for producing plastic parts according to claim 1, characterized in that: The outer side of the first spring (206) is attached to the inner wall of the moving groove (204), one end of the first spring (206) is fixedly connected to the inner wall of the moving groove (204), the other end of the first spring (206) is fixedly connected to the limiting backing plate (207), the auxiliary hemisphere (208) is attached to the inclined surface abutting block (202), the inner fixed ring (203) is fixedly connected to the back of the first mold (103), and the piston rod of the electric push rod (102) is attached to the inner wall of the inner fixed ring (203).

3. An injection molding machine for producing plastic parts according to claim 1, characterized in that: A number of locking grooves (209) and an anti-deviation groove (211) are evenly opened on the outer side of the piston rod of the electric push rod (102), the locking grooves (209) are inserted into the moving column (205), an anti-deviation block (210) is fixedly connected to the inner side of the inner fixed ring (203), and the anti-deviation block (210) is engaged with the anti-deviation groove (211).

4. An injection molding machine for producing plastic parts according to claim 1, characterized in that: A convex plate (212) is fixedly connected to the outer side of the rotating outer ring (201). A positioning pin (213) is slidably connected to the convex plate (212). One end of the positioning pin (213) is fixedly connected to a pull ring (216). The other end of the positioning pin (213) is inserted into a positioning sleeve (214). The positioning sleeve (214) is fixedly installed on the back of the first mold (103). The abutting column (302) can be attached to the moving plate (301).

5. An injection molding machine for producing plastic parts according to claim 4, characterized in that: A second spring (215) is fixedly connected between the pull ring (216) and the convex plate (212). The second spring (215) is sleeved outside the positioning pin (213).

6. An injection molding machine for producing plastic parts according to claim 5, characterized in that: A third spring (305) is fixedly connected between the moving plate (301) and the first mold (103). The third spring (305) is sleeved outside the push column (303).

7. An injection molding machine for producing plastic parts according to claim 6, characterized in that: One end of the push column (303) passing through the first mold (103) is fixedly connected to a sealing pad (304). The sealing pad (304) is attached to the inner surface of the first mold (103).

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