Injection molding machine convenient for demolding in production of automobile parts

Abstract

The utility model relates to the technical field of molds, and discloses an injection molding machine convenient for demolding in production of automobile parts, which comprises a base, a cooling box fixedly arranged on the base, a fixed plate fixedly arranged in the cooling box, and an upper mold fixedly arranged on the fixed plate; a lower mold is movably arranged in the cooling box, and the upper mold and the lower mold are oppositely arranged up and down; a driving assembly is fixedly arranged in the cooling box, and the output end of the driving assembly is in transmission connection with the lower mold. An ejector rod is fixedly arranged in the cooling box; an insertion hole is formed in the lower mold and is communicated with a mold cavity of the lower mold; the ejector rods correspond to the insertion holes and are in insertion fit with the insertion holes; a plug block is in sealed sliding fit in the insertion hole, the ejector rod is in abutting transmission fit with the plug block, and the plug block is in abutting transmission fit with a forming part in the lower die; a reset assembly is arranged in the lower die and is in transmission connection with the blocking block. A limiting assembly is arranged in the lower die and matched with the blocking block in a limiting mode. The device does not need to operate a fastener, is simple in structure, and saves time and labor.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an injection molding machine which is convenient for demoulding in the production of automobile parts. Background Art

[0002] Injection molding machine is a machine used for plastic processing. It melts plastic granules or powder by heating them, then injects them into the mold under high pressure, and forms the desired plastic products after cooling and solidification. Injection molding machines are widely used in the manufacture of various plastic products, such as toys, auto parts, electronic product housings, packaging containers, etc.

[0003] The invention discloses an injection mold for automobile interior parts that is easy to demold, and the mold comprises a cooling box, an upper mold, a lower mold, and a cavity. The bottom of the cooling box is provided with a base, the bottom of the lower mold is provided with an arc-shaped notch, the bottom of the inner cavity of the cooling box is provided with a telescopic rod, and the top of the telescopic rod is provided with an arc-shaped plate.

[0004] Based on the above technical features, the problem that arises is that in the prior art, multiple fasteners need to be operated during demoulding to separate the upper and lower molds, and the demoulding process is complicated, time-consuming and labor-intensive.

[0005] Therefore, it is necessary to solve the above problems by using an injection molding machine that facilitates demoulding of automotive parts production. Summary of the invention

[0006] The utility model aims to provide an injection molding machine which is convenient for demoulding of automobile parts production, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection molding machine that is convenient for demoulding of automobile parts production, comprising a base, a cooling box is fixedly arranged on the base, a fixed plate is fixedly arranged in the cooling box, and an upper mold is fixedly arranged on the fixed plate; a lower mold is movably arranged in the cooling box, and the upper mold and the lower mold are opposed to each other up and down; a driving component is fixedly arranged in the cooling box, and the output end of the driving component is transmission-connected with the lower mold; a push rod is fixedly arranged in the cooling box; a socket is provided on the lower mold, and the socket is connected with the mold cavity of the lower mold; the push rod corresponds to the socket and is plug-matched with the socket; a sealing sliding matching block is in the socket, the push rod is in abutment and transmission matching with the block, and the block is in abutment and transmission matching with the molded parts in the lower mold; a reset component is arranged in the lower mold, and the reset component is transmission-connected with the block; a limit component is arranged in the lower mold, and the limit component is in limit matching with the block.

[0008] Preferably, the driving assembly includes two cylinders, both of which are fixedly arranged in the cooling box; the output shafts of the two cylinders are parallel to each other and both face the upper mold; the lower mold is located between the output shafts of the two cylinders and is fixedly connected to the output shafts of the two cylinders serving as output ends.

[0009] Preferably, a first groove is provided in the lower mold, and the first groove is connected to the jack in the lower mold; a limit assembly is installed in the first groove; a positioning groove is provided on the blocking block, and the output end of the limit assembly is engaged with the positioning groove for limit cooperation.

[0010] Preferably, the limiting assembly includes a ball spring pin, which is fixedly installed in the first groove and has a hemispherical pin head at the output end; the positioning groove matches the hemispherical pin head of the ball spring pin, and the hemispherical pin head is engaged with the positioning groove in a limiting manner.

[0011] Preferably, a second groove is provided in the lower mold, and the second groove is connected to the jack in the lower mold; a reset assembly is installed in the second groove; a slider is fixedly provided on the blocking block, and the slider is limitedly slidably matched with the second groove; and the reset assembly is transmission-connected to the slider.

[0012] Preferably, the reset assembly comprises a spring, which is located in the second groove and arranged along the sliding direction of the slider; one end of the spring is fixedly connected to the slider, and the other end of the spring is fixedly connected to the lower mold.

[0013] Preferably, a casting pipe is fixedly arranged on the cooling box, and the casting pipe is fixedly connected to the upper mold and communicated with the mold cavity of the upper mold.

[0014] Preferably, an air cooler is fixedly arranged on the base, and an air outlet of the air cooler is connected to the interior of the cooling box through a pipeline.

[0015] Preferably, a mold removal opening is provided on the cooling box, and a box door is arranged in the mold removal opening; the box door is hinged to the cooling box.

[0016] The technical effects and advantages of the utility model are as follows: the utility model pushes the blocking block by the ejector rod, and the blocking block pushes the molded parts to be demoulded, and there is no need to operate fasteners, the structure is simple, and time and labor are saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0018] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the lower mold of the utility model;

[0020] Figure 4 This is a schematic diagram of the limit assembly of the utility model;

[0021] Figure 5 This is an enlarged schematic diagram of point A of the utility model;

[0022] Figure 6 This is a schematic diagram of the reset component of the utility model.

[0023] In the figure: 1. casting pipe; 2. cooling box; 3. fixing plate; 4. upper mold; 5. lower mold; 501. blocking block; 502. positioning groove; 503. ball spring pin; 504. spring; 505. slider; 506. second groove; 507. first groove; 6. cylinder; 7. push rod; 8. base; 9. air cooler; 10. box door; 11. door handle. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0025] The utility model provides an injection molding machine that facilitates demoulding of automobile parts production, including a base 8. Figure 1 As shown, the top of the base 8 is welded and fixed to the cooling box 2, and a mold removal opening is cut out on the front side of the cooling box 2. A door 10 is hinged on the cooling box 2, and the door 10 covers the mold removal opening.

[0026] The door handle 11 is fixed by screws on the box door 10.

[0027] like Figure 2 As shown, the top bolts of the base 8 fix the air cooler 9, the air outlet of the air cooler 9 is fixedly connected to the pipeline, and the pipeline is fixedly connected to the cooling box 2 for blowing cold air into the cooling box 2.

[0028] Two fixing plates 3 are welded and fixed on the inner wall of the cooling box 2, and the bottoms of the two fixing plates 3 are fixedly connected to the same upper mold 4. The top of the cooling box 2 is fixedly connected to the pouring pipe 1, which passes through the top of the cooling box 2 and is fixedly connected to the upper mold 4. The pouring pipe 1 is connected to the mold cavity of the upper mold 4 for pouring liquid plastic.

[0029] The lower mold 5 is movably assembled in the cooling box 2, and the upper mold 4 and the lower mold 5 are vertically opposed. A driving assembly is fixedly assembled in the cooling box 2, and the output end of the driving assembly is fixedly connected to the lower mold 5, which is used to drive the lower mold 5 to approach or move away from the upper mold 4 in the vertical direction.

[0030] The driving assembly includes two cylinders 6, which are bolted to the bottom of the cooling box 2. The output shafts of the two cylinders 6 are vertically upward and toward the upper mold 4. The output shafts of the two cylinders 6 are fixedly connected to the lower mold 5 as output ends. The lower mold 5 is located between the output shafts of the two cylinders 6. The output shafts of the two cylinders 6 are used to push the lower mold 5 up and down and to support the lower mold 5.

[0031] Two push rods 7 are vertically arranged in the cooling box 2, and the two push rods 7 are welded to the bottom of the cooling box 2. The two push rods 7 are located between the two cylinders 6. Figure 3 As shown, two insertion holes corresponding to the ejector pins 7 are chiseled out on the lower mold 5, and both insertion holes are connected to the mold cavity of the lower mold 5. Each ejector pin 7 is plugged into and matched with the corresponding insertion hole.

[0032] A block 501 is sealed and slidably fitted in each of the two sockets, each ejector rod 7 is in abutment and transmission fit with the block 501 in the inserted socket, and each block 501 is in abutment and transmission fit with the molded parts in the mold cavity of the lower mold 5, so as to eject the molded parts from the mold cavity of the lower mold 5.

[0033] like Figure 4 As shown, four first grooves 507 are dug out in the lower mold 5, and each plug hole is connected to two first grooves 507. The two first grooves 507 connected to the same plug hole are symmetrically distributed about the connected plug hole. A limiting component is assembled in each first groove 507, and each limiting component is limitedly matched with the block 501 in the plug hole connected by the first groove 507.

[0034] like Figure 5 As shown, each limiting assembly includes a ball spring pin 503. The ball spring pin 503 is composed of a return spring and a hemispherical pin head. The hemispherical pin head is slidably matched with the first groove 507 and faces the block 501 that is limited. One end of the return spring is fixedly connected to the lower mold 5, and the other end is fixedly connected to the hemispherical pin head. A positioning groove 502 matching the hemispherical pin head is chiseled on the block 501. The hemispherical pin head is engaged with the positioning groove 502 for limiting. It is used for limiting the block 501.

[0035] like Figure 6 As shown, four second grooves 506 are dug out in the lower mold 5, and each plug hole is connected to two second grooves 506. The two second grooves 506 connected to the same plug hole are symmetrically distributed front and back about the connected plug hole. A reset component is assembled in each second groove 506, and each reset component is transmission-connected to the block 501 in the plug hole connected to the second groove 506.

[0036] Each reset assembly includes a spring 504. Two sliders 505 are welded and fixed on each block 501, and the two sliders 505 correspond one by one to the two second grooves 506 connected to the jack where the connected block 501 is located. Each slider 505 is located in the corresponding second groove 506 and is limitedly slidably matched with the second groove 506. Each spring 504 is arranged along the sliding direction of the slider 505 in the second groove 506. One end of each spring 504 is fixedly connected to the slider 505 in the second groove 506, and the other end of each spring 504 is fixedly connected to the lower mold 5. Used for resetting the block 501.

[0037] Working principle: When closing the mold, the two cylinders 6 are started, and the output shafts of the two cylinders 6 extend upward and drive the lower mold 5 to move upward and close to the upper mold 4. When the lower mold 5 contacts and seals the upper mold 4, the two cylinders 6 are turned off.

[0038] Then, liquid plastic is poured into the part model cavity composed of the upper mold 4 and the lower mold 5 through the pouring pipe 1. After pouring, the cold air blower 9 is started, and the cold air blower 9 blows cold air into the cooling box 2 through the pipeline, thereby accelerating the solidification of the liquid plastic.

[0039] When demolding is required after solidification, the two cylinders 6 are started again, and the output shafts of the two cylinders 6 are retracted and drive the lower mold 5 to move downward away from the upper mold 4. At the same time, the lower mold 5 drives the molded parts to move downward synchronously. As the lower mold 5 continues to move downward, the two ejector rods 7 contact the corresponding blocking blocks 501. Then the two ejector rods 7 push the corresponding blocking blocks 501 to slide upward along the sockets relative to the lower mold 5, and the two blocking blocks 501 push the molded parts to slide out of the lower mold 5. At this time, the two cylinders 6 are turned off.

[0040] During this process, the two push rods 7 are inserted into the corresponding insertion holes. The two blocking blocks 501 drive the connected sliders 505 to slide upward along the second grooves 506 relative to the lower mold 5, and each spring 504 is stretched. At the same time, the hemispherical pin heads of all ball spring pins 503 slide out of the clamped positioning grooves 502, and all return springs are compressed.

[0041] After the formed parts slide out from the lower mold 5, the door handle 11 is pulled to open the material taking-out port to take out the formed parts.

[0042] After taking out the molded parts, the two cylinders 6 are started again, and the output shafts of the two cylinders 6 extend and drive the lower mold 5 to move upward close to the upper mold 4 to prepare for the next injection molding operation. During this process, the lower mold 5 and the two ejector rods 7 gradually slide away. Each spring 504 retracts and drives the connected slider 505 to slide downward relative to the lower mold 5 and reset, and each slider 505 drives the connected block 501 to slide downward relative to the lower mold 5 and reset.

[0043] When the block 501 slides back, the return springs of all the ball spring pins 503 extend and push the connected hemispherical pins to snap into the corresponding positioning grooves 502 again, thus limiting the block 501. The whole process does not require manual fasteners, has a simple structure, and saves time and effort.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An injection molding machine for facilitating demoulding of automobile parts production, comprising a base (8), characterized in that: A cooling box (2) is fixedly arranged on the base (8), a fixing plate (3) is fixedly arranged inside the cooling box (2), and an upper mold (4) is fixedly arranged on the fixing plate (3); a lower mold (5) is movably arranged inside the cooling box (2), and the upper mold (4) and the lower mold (5) are arranged opposite to each other in upper and lower directions; a driving component is fixedly arranged inside the cooling box (2), and an output end of the driving component is transmission-connected to the lower mold (5); a push rod (7) is fixedly arranged inside the cooling box (2); a plug hole is provided on the lower mold (5), and a plug hole is inserted into the lower mold (5). The hole is connected to the mold cavity of the lower mold (5); the push rod (7) corresponds to the plug hole and is plugged into the plug hole; a sealing and sliding block (501) is provided in the plug hole, the push rod (7) and the block (501) are abutted and transmission-matched, and the block (501) and the molding parts in the lower mold (5) are abutted and transmission-matched; a reset component is provided in the lower mold (5), and the reset component is transmission-connected to the block (501); a limit component is provided in the lower mold (5), and the limit component and the block (501) are limit-matched.

2. The injection molding machine for facilitating demoulding of automobile parts production according to claim 1, characterized in that: The driving assembly comprises two cylinders (6), both of which are fixedly arranged in the cooling box (2); the output shafts of the two cylinders (6) are parallel to each other and both face the upper mold (4); the lower mold (5) is located between the output shafts of the two cylinders (6) and is fixedly connected to the output shafts of the two cylinders (6) as output ends.

3. The injection molding machine for facilitating demoulding of automobile parts production according to claim 1, characterized in that: A first groove (507) is provided in the lower mold (5), and the first groove (507) is communicated with the insertion hole in the lower mold (5); a limit assembly is installed in the first groove (507); a positioning groove (502) is provided on the blocking block (501), and the output end of the limit assembly is engaged with the positioning groove (502) for limit engagement.

4. The injection molding machine for facilitating demoulding of automobile parts production according to claim 3, characterized in that: The limiting assembly comprises a ball spring pin (503), the ball spring pin (503) is fixedly installed in the first groove (507) and the output end is a hemispherical pin head; the positioning groove (502) matches the hemispherical pin head of the ball spring pin (503), and the hemispherical pin head and the positioning groove (502) are engaged and limited.

5. The injection molding machine for facilitating demoulding of automobile parts production according to claim 1, characterized in that: A second groove (506) is provided in the lower mold (5), and the second groove (506) is communicated with the insertion hole in the lower mold (5); a reset component is installed in the second groove (506); a slider (505) is fixedly provided on the blocking block (501), and the slider (505) is limitedly slidably matched with the second groove (506); and the reset component is transmission-connected to the slider (505).

6. The injection molding machine for facilitating demoulding of automobile parts production according to claim 5, characterized in that: The reset assembly comprises a spring (504), which is located in the second groove (506) and is arranged along the sliding direction of the slider (505); one end of the spring (504) is fixedly connected to the slider (505), and the other end is fixedly connected to the lower mold (5).

7. The injection molding machine for facilitating demoulding of automobile parts production according to claim 1, characterized in that: A pouring pipe (1) is fixedly arranged on the cooling box (2); the pouring pipe (1) is fixedly connected to the upper mold (4) and communicated with the mold cavity of the upper mold (4).

8. The injection molding machine for facilitating demoulding of automobile parts production according to claim 1, characterized in that: A cooling fan (9) is fixedly arranged on the base (8), and an air outlet of the cooling fan (9) is connected to the interior of the cooling box (2) through a pipeline.

9. The injection molding machine for facilitating demoulding of automobile parts production according to claim 1, characterized in that: The cooling box (2) is provided with a mold removal opening, and a box door (10) is arranged inside the mold removal opening; the box door (10) is hinged to the cooling box (2).

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