Ejection device for injection-moulding tools

Abstract

The utility model relates to injection mold technical field, and disclose a kind of injection mold demolding device, including bottom plate, bottom plate top end surface fixed mounting has lifting mechanism, bottom plate top end surface fixed mounting has automatic demolding mechanism. First, the upper die is lifted by lifting mechanism, and part of the mold is exposed, the second cylinder is opened to push down mounting block to move down, drive the first connecting rod below hinge piece to deflect with the center of circle, the first connecting rod is pulled down by second connecting rod, while the second connecting rod is driven to deflect with the center of circle above hinge piece, and the top block and the lower die installed on the top end surface of top block are offset, and the finished product of injection molding is pushed out, then it is taken out, then the second cylinder is retracted down mounting block to further drive the second connecting rod to rise, and the top block is reset, further aligns the side sealing pad on the side of lower die, can effectively improve demolding efficiency, and can protect staff from scalding, improve the practicability of the device.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to an injection mold demolding device. Background Technology

[0002] Injection molding, also known as injection molding, is a processing method that combines injection and molding. It involves injecting fully molten plastic material into a mold cavity under high pressure at a specific temperature, followed by cooling and solidification to obtain the molded part. This method is suitable for the mass production of complex-shaped parts and offers advantages such as high production speed, high efficiency, and the potential for automation.

[0003] After the molded model cools and solidifies, it needs to be removed from the mold cavity. In the current technology, some injection molding machines lack a practical demolding mechanism. After the product is formed, it is easy for the molded product to stick to the moving mold. Therefore, the staff needs to manually remove the product one by one, which is not only time-consuming and laborious, but also poses a certain danger as the residual heat can easily burn the staff.

[0004] Therefore, there is a need to provide a demolding device for injection molds. Utility Model Content

[0005] The purpose of this invention is to provide a demolding device for injection molds, so as to solve the problems mentioned in the background art, such as the adhesion of traditional molds leading to slow demolding and the high temperature of the mold causing burns.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a demolding device for injection molds, comprising a base plate, a lifting mechanism fixedly installed on the top surface of the base plate, and an automatic demolding mechanism fixedly installed on the top surface of the base plate; the automatic demolding mechanism comprises a fixed frame, the bottom end of the fixed frame being fixedly connected to the top surface of the base plate, a connecting sleeve fixedly installed on the top surface of the fixed frame, a second cylinder fixedly installed on the inner wall of the connecting sleeve, an upper mounting block fixedly installed on the top surface of the second cylinder, a lower mounting block fixedly installed on the bottom end of the second cylinder push rod, a lower hinge fixedly installed on the side of the lower mounting block, a first connecting rod fixedly installed on the side of the lower hinge, an upper hinge fixedly installed on the side of the upper mounting block, and a second connecting rod fixedly installed on the side of the upper hinge.

[0007] Preferably, a top block is fixedly installed on the top surface of the second connecting rod, and a reinforcing block is fixedly installed on the bottom surface of the top block. The side of the reinforcing block is fixedly connected to the side of the second connecting rod.

[0008] Preferably, a lower mold is fixedly installed on the top surface of the top block, a side sealing gasket is fixedly installed on the side of the lower mold, and an upper sealing gasket is fixedly installed on the top surface of the lower mold.

[0009] Preferably, the lifting mechanism includes a fixing member, the bottom end face of the fixing member is fixedly connected to the top end face of the base plate, a first cylinder is fixedly installed on the top end face of the fixing member, and a fixing sleeve is fixedly installed on the end face of the push rod of the first cylinder.

[0010] Preferably, an upper mold is fixedly installed on the side of the fixed sleeve, a sealing ring is fixedly installed on the bottom end face of the upper mold, a through hole is fixedly opened on the top end face of the upper mold, and an injection port is fixedly installed on the inner wall of the through hole.

[0011] Preferably, an anti-slip pad is fixedly installed on the bottom end surface of the base plate.

[0012] Preferably, there are two fixing sleeves, which are installed on both sides of the upper mold respectively.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1) This injection mold demolding device, after the injection molding operation is completed, firstly lifts the upper mold through the lifting mechanism to expose part of the mold. Then, the second cylinder is opened, and the second cylinder pushes the lower mounting block to move down. This further drives the first connecting rod to deflect around the lower hinge. The second connecting rod then pulls the first connecting rod down, while the upper hinge drives the second connecting rod to deflect around the second hinge. This causes the top block and the lower mold mounted on the top surface of the top block to shift, pushing out the finished product. The product is then removed. Then, the second cylinder retracts the lower mounting block, which in turn drives the second connecting rod to rise and reset the top block. This further aligns the side sealing gaskets on the side of the lower mold. This effectively improves demolding efficiency and protects workers from burns, enhancing the practicality of the device.

[0015] 2) When using this injection mold demolding device, the lower mold is first assembled by the automatic demolding mechanism. Then, the first cylinder is opened, and the first cylinder drives the fixed sleeve installed on the end face of the push rod to move down. This further drives the upper mold installed on the side of the fixed sleeve to move down, and the upper sealing ring installed on the bottom end face of the upper mold is tightly fitted with the upper sealing gasket. Then, the injection port is connected to the transfer pipe for injection operation. This can improve the automation of injection and demolding operations and effectively improve injection and demolding efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of an injection mold demolding device according to an embodiment of the present utility model;

[0017] Figure 2 This is a bottom view of the structure in an embodiment of this utility model;

[0018] Figure 3 This is a schematic diagram of the lifting mechanism structure in an embodiment of this utility model;

[0019] Figure 4 This is a schematic diagram of the upper sealing gasket structure in an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the fixing frame structure in an embodiment of this utility model;

[0021] Figure 6 This is a schematic diagram of the automatic demolding mechanism in its unfolded state in an embodiment of this utility model;

[0022] Figure 7 This is a schematic diagram of the automatic demolding mechanism in an embodiment of this utility model.

[0023] In the diagram: 1. Base plate; 2. Anti-slip mat; 3. Lifting mechanism; 301. Fixing component; 302. First cylinder; 303. Fixing sleeve; 304. Upper mold; 305. Injection port; 306. Sealing ring; 4. Automatic demolding mechanism; 401. Fixing frame; 402. Lower mounting block; 403. Second cylinder; 404. Upper mounting block; 405. Lower hinge; 406. First connecting rod; 407. Upper hinge; 408. Second connecting rod; 409. Reinforcing block; 410. Top block; 411. Lower mold; 412. Side sealing gasket; 413. Upper sealing gasket; 414. Connecting sleeve. Detailed Implementation

[0024] 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.

[0025] Example 1

[0026] Combination Figures 1-5A demolding device for injection molds includes a base plate 1, a lifting mechanism 3 fixedly mounted on the top surface of the base plate 1, and an automatic demolding mechanism 4 fixedly mounted on the top surface of the base plate 1. The automatic demolding mechanism 4 includes a fixing frame 401, the bottom surface of the fixing frame 401 being fixedly connected to the top surface of the base plate 1, a connecting sleeve 414 fixedly mounted on the top surface of the fixing frame 401, a second cylinder 403 fixedly mounted on the inner wall of the connecting sleeve 414, an upper mounting block 404 fixedly mounted on the top surface of the second cylinder 403, a lower mounting block 402 fixedly mounted on the bottom surface of the push rod of the second cylinder 403, and a lower hinge 4 fixedly mounted on the side of the lower mounting block 402. 05, a first connecting rod 406 is fixedly installed on the side of the lower hinge 405, an upper hinge 407 is fixedly installed on the side of the upper mounting block 404, a second connecting rod 408 is fixedly installed on the side of the upper hinge 407, a top block 410 is fixedly installed on the top surface of the second connecting rod 408, a reinforcing block 409 is fixedly installed on the bottom surface of the top block 410, the side of the reinforcing block 409 is fixedly connected to the side of the second connecting rod 408, a lower mold 411 is fixedly installed on the top surface of the top block 410, a side sealing gasket 412 is fixedly installed on the side of the lower mold 411, and an upper sealing gasket 413 is fixedly installed on the top surface of the lower mold 411;

[0027] Specifically, during use, after the injection molding operation is completed, the upper mold 304 is first lifted by the lifting mechanism 3 to expose part of the mold. Then, the second cylinder 403 is opened, and the second cylinder 403 pushes the lower mounting block 402 to move down. This further drives the first connecting rod 406 to deflect around the lower hinge 405. The first connecting rod 406 then pulls the second connecting rod 408 down, while the upper hinge 407 drives the second connecting rod 408 to deflect around the center. This causes the top block 410 and the lower mold 411 mounted on the top surface of the top block 410 to shift, pushing out the finished product. The product is then removed. The second cylinder 403 then retracts the lower mounting block 402, which in turn drives the second connecting rod 406 to rise and reset the top block 410. Finally, the side sealing gaskets 412 on the side of the lower mold 411 are aligned.

[0028] Example 2

[0029] See Figures 1-5 Furthermore, the lifting mechanism 3 includes a fixing member 301, the bottom end face of the fixing member 301 is fixedly connected to the top end face of the base plate 1, a first cylinder 302 is fixedly installed on the top end face of the fixing member 301, a fixing sleeve 303 is fixedly installed on the push rod end face of the first cylinder 302, an upper mold 304 is fixedly installed on the side of the fixing sleeve 303, a sealing ring 306 is fixedly installed on the bottom end face of the upper mold 304, a through hole is fixedly opened on the top end face of the upper mold 304, an injection port 305 is fixedly installed on the inner wall of the through hole, an anti-slip pad 2 is fixedly installed on the bottom end face of the base plate 1, and there are two fixing sleeves 303, which are respectively installed on both sides of the upper mold 304.

[0030] Specifically, in use, the lower mold 411 is first assembled by the automatic demolding mechanism 4, and the first cylinder 302 is further opened. The first cylinder 302 drives the fixed sleeve 303 installed on the end face of the push rod to move down, which in turn drives the upper mold 304 installed on the side of the fixed sleeve 303 to move down. The upper sealing ring 306 installed on the bottom end face of the upper mold 304 is then tightly fitted with the upper sealing gasket 413. The injection port 305 is then connected to the transfer pipe for injection molding. After injection molding is completed, the upper mold 304 is pushed up by the first cylinder 302, and the demolding operation is performed by the automatic demolding mechanism 4.

[0031] 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 the 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 demolding device for injection molds, comprising a base plate (1), characterized in that: A lifting mechanism (3) is fixedly installed on the top surface of the base plate (1), and an automatic demolding mechanism (4) is fixedly installed on the top surface of the base plate (1). The automatic demolding mechanism (4) includes a fixed frame (401), the bottom end face of the fixed frame (401) is fixedly connected to the top end face of the base plate (1), a connecting sleeve (414) is fixedly installed on the top end face of the fixed frame (401), a second cylinder (403) is fixedly installed on the inner wall of the connecting sleeve (414), an upper mounting block (404) is fixedly installed on the top end face of the second cylinder (403), a lower mounting block (402) is fixedly installed on the bottom end face of the push rod of the second cylinder (403), a lower hinge (405) is fixedly installed on the side of the lower mounting block (402), a first connecting rod (406) is fixedly installed on the side of the lower hinge (405), an upper hinge (407) is fixedly installed on the side of the upper mounting block (404), and a second connecting rod (408) is fixedly installed on the side of the upper hinge (407).

2. The injection mold demolding device according to claim 1, characterized in that: A top block (410) is fixedly installed on the top surface of the second connecting rod (408), and a reinforcing block (409) is fixedly installed on the bottom surface of the top block (410). The side of the reinforcing block (409) is fixedly connected to the side of the second connecting rod (408).

3. The injection mold demolding device according to claim 2, characterized in that: The top surface of the top block (410) is fixedly installed with a lower mold (411), the side of the lower mold (411) is fixedly installed with a side sealing gasket (412), and the top surface of the lower mold (411) is fixedly installed with an upper sealing gasket (413).

4. The injection mold demolding device according to claim 1, characterized in that: The lifting mechanism (3) includes a fixing member (301), the bottom end face of the fixing member (301) is fixedly connected to the top end face of the base plate (1), a first cylinder (302) is fixedly installed on the top end face of the fixing member (301), and a fixing sleeve (303) is fixedly installed on the push rod end face of the first cylinder (302).

5. The injection mold demolding device according to claim 4, characterized in that: The upper mold (304) is fixedly installed on the side of the fixed sleeve (303), and a sealing ring (306) is fixedly installed on the bottom end face of the upper mold (304). A through hole is fixedly opened on the top end face of the upper mold (304), and an injection port (305) is fixedly installed on the inner wall of the through hole.

6. The injection mold demolding device according to claim 1, characterized in that: The bottom end face of the base plate (1) is fixedly installed with an anti-slip pad (2).

7. The injection mold demolding device according to claim 4, characterized in that: The number of fixed sleeves (303) is two, which are respectively installed on both sides of the upper mold (304).

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