Demolding mechanism of vertical injection molding machine

Abstract

The utility model discloses a demoulding mechanism of a vertical injection molding machine, and relates to the technical field of injection molding machines. A fixed part is fixedly connected to the top of the air cylinder, a movable plate is slidably connected to the outer portion of the rotating part in a sleeving mode, an ejection block is movably connected to the interior of the lower die, a limiting spring is connected to the outer portion of the ejection block in a sleeving mode, and a connecting rod is fixedly connected to the bottom of the limiting spring; when the rotating piece rotates, the top protruding part is slidably connected into the sliding groove, the moving plate is driven to move upwards till the moving plate moves to the side face of the connecting rod, the air cylinder can drive the fixing piece and the moving plate connected with the surface to move towards one end, and in the moving process, the top inclined face of the moving plate can push the connecting rod to move towards the interior of the demolding barrel; the ejector block is driven to upwards eject out of the lower die, formed plastic is ejected out of the device, and due to the fact that the contact area between the ejector block and the formed plastic is large, the situation that the plastic is damaged in the ejection process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a demoulding mechanism for a vertical injection molding machine. Background Art

[0002] A vertical injection molding machine is a mechanical device. The injection system is one of the most important components of the injection molding machine. Generally, there are three main types: plunger type, screw type, and screw pre-plasticizing plunger injection type. The most widely used is the screw type. Its function is to heat and plasticize a certain amount of plastic within a specified time in one cycle of the injection molding machine, and then inject the molten plastic into the mold cavity through the screw under a certain pressure and speed. During the molding of the existing vertical injection molding machine after injection molding, the molded plastic needs to be manually demolded in the mold. After cooling, the plastic may shrink inside the mold and is not easy to remove. At the same time, when using the ejection tool, the contact area between the tool and the molded plastic may be too small, resulting in damage to the molded plastic during the demolding process. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a demolding mechanism for a vertical injection molding machine, which solves the problem that the molded plastic needs to be demolded manually in the mold, the plastic may shrink inside the mold after cooling and is difficult to remove, and when a push-out tool is used, the contact area between the tool and the molded plastic may be too small, resulting in damage to the molded plastic.

[0004] To achieve the above purpose, the utility model is implemented by the following technical scheme: a demoulding mechanism of a vertical injection molding machine. It includes an injection molding component, a demoulding component is arranged at the bottom of the injection molding component, the demoulding component includes an upper fixed plate, an injection molding hole is opened in the middle of the upper fixed plate, an upper mold is protruded downward from the bottom of the upper fixed plate, a protrusion is arranged on the side of the upper fixed plate and a side fixed plate is sleeved on the outside, a lower fixed plate is fixedly connected below the side fixed plate, the side of the lower fixed plate extends downward and is fixedly connected with a cylinder, a fixing piece is fixedly connected to the top of the cylinder, a movable groove is recessed inwardly on the side of the fixing piece, a rotating piece is rotatably connected in the middle of the movable groove, a movable plate is slidably sleeved on the outside of the rotating piece, a lower mold is protruded upward in the middle of the lower fixed plate, a demoulding barrel is fixedly connected to the bottom of the lower fixed plate, a top block is movably connected inside the lower mold, a limit spring is sleeved on the outside of the top block, a connecting rod is fixedly connected to the bottom of the limit spring, and the connecting rod passes through the bottom of the demoulding barrel.

[0005] Preferably, the injection molding assembly includes an injection molding machine, the bottom of the injection molding machine is fixedly connected to an injection molding tube, and the top of the injection molding machine is fixedly connected to a feeding bucket.

[0006] Preferably, a second sliding groove is opened on the surface of the side fixing plate, a connecting rod is fixedly connected inside the second sliding groove at one end of the side fixing plate, and a screw rod is rotatably connected inside the second sliding groove at the other end of the side fixing plate.

[0007] Preferably, a protrusion is provided on the side of the injection molding machine and is sleeved on the outside of the screw rod and the connecting rod, and the protrusion provided on the side of the upper fixing plate is sleeved on the outside of the screw rod and the connecting rod.

[0008] Preferably, a fixing column protrudes upward from the bottom of the demoulding barrel, and the top block is sleeved on the outside of the fixing column.

[0009] Preferably, the top of the limit spring is fixedly connected to the top of the inner cavity of the demoulding barrel, and the bottom of the top block protrudes outward and the top is clamped with the limit spring.

[0010] Preferably, a slide groove is provided inside the movable plate, the rotating member is slidably connected inside the slide groove, a plurality of limit blocks are fixedly connected to the surface of the fixed member, and the movable plate is slidably connected inside the limit blocks.

[0011] Preferably, a rotating motor is fixedly connected to the top of the side fixing plate, and an output end of the rotating motor passes through the top of the side fixing plate and is fixedly connected to a screw rod in the inner cavity of the second sliding groove.

[0012] Preferably, a motor is arranged inside the fixing member, and an output end of the motor passes through the fixing member and is fixedly connected to the surface of the movable groove with the rotating member.

[0013] The utility model provides a demoulding mechanism for a vertical injection molding machine. Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. A demoulding mechanism of a vertical injection molding machine, a moving plate slidably connected to the inside of a limit block, and a rotating part rotatably connected to the inside of a movable groove depressed downward on the surface of a fixed part, when the rotating part rotates, the top protrusion is slidably connected to the inside of the slide groove, driving the moving plate to move upward until it stops when it moves to the side of a connecting rod, and the cylinder can drive the fixed part and the moving plate connected to the surface to move toward one end. During the movement, the top inclined surface of the moving plate will push the connecting rod to move toward the inside of the demoulding barrel, driving the ejector block to eject the outside of the lower mold upward, and ejecting the molded plastic to the outside of the device. Due to the large contact area between the ejector block and the molded plastic, the plastic will not be damaged during the ejection process.

[0015] 2. A demoulding mechanism for a vertical injection molding machine, in the process of driving the ejector block to eject the lower mold through the connecting rod, since the limit spring is clamped between the top of the inner cavity of the demoulding barrel and the bottom of the ejector block, after the ejector block ejects the molded plastic, under the rebound action of the limit spring, the ejector block will be driven back to the inside of the lower mold, which will not affect the next extrusion molding of the colloid between the upper mold and the lower mold, and can continuously demould the molding mold under the cooperation of the moving plate and the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the injection molding component of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the demoulding component of the utility model;

[0019] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the demoulding component of the utility model;

[0020] Figure 5 This is a detailed diagram of the demoulding component of the utility model.

[0021] In the figure: 1. injection molding component; 2. demoulding component; 11. injection molding machine; 12. injection molding tube; 13. feeding barrel; 21. upper fixed plate; 2100. injection hole; 22. lower fixed plate; 23. upper mold; 24. lower mold; 25. demoulding barrel; 250. fixed column; 251. limit spring; 252. top block; 26. connecting rod; 27. cylinder; 28. fixing part; 280. movable groove; 281. rotating part; 29. ​​limit block; 210. movable plate; 2101. slide groove; 211. side fixing plate; 212. second slide groove; 213. screw rod; 214. connecting rod; 215. rotating motor. DETAILED DESCRIPTION

[0022] 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 described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0023] See also Figure 1-5The utility model provides a technical solution: a demoulding mechanism of a vertical injection molding machine. It includes an injection molding component 1, a demoulding component 2 is arranged at the bottom of the injection molding component 1, and the demoulding component 2 includes an upper fixed plate 21, an injection hole 2100 is opened in the middle of the upper fixed plate 21, and an injection tube 12 arranged at the top of the injection molding machine 11 is aligned with the injection hole 2100 to inject the colloid between the upper mold 23 and the lower mold 24 for shaping, the bottom of the upper fixed plate 21 is protruding downward with an upper mold 23, the side of the upper fixed plate 21 is provided with a protrusion and the outer sleeve is provided with a side fixed plate 211, the lower part of the side fixed plate 211 is fixedly connected with a lower fixed plate 22, the side of the lower fixed plate 22 extends downward and is fixedly connected with a cylinder 27, the cylinder 27 can drive the fixing part 28 fixedly connected to the top and the structure arranged on the surface of the fixing part 28 to move, the top of the cylinder 27 is fixedly connected with a fixing part 28, the side of the fixing part 28 is recessed inward with a movable groove 280, and the middle part of the movable groove 280 is rotated and connected A rotating member 281 is connected, and a movable plate 210 is slidably sleeved on the outside of the rotating member 281. The motor arranged inside the fixed member 28 can drive the movable groove 280 to rotate. When the movable groove 280 rotates, a raised part at one end can slide inside the slide groove 2101 to change the distance that the movable plate 210 moves up and down. A lower mold 24 is raised upward in the middle part of the lower fixed plate 22, and a demoulding barrel 25 is fixedly connected to the bottom of the lower fixed plate 22. A top block 252 is movably connected inside the lower mold 24, and a limiting spring 251 is sleeved on the outside of the top block 252. A connecting rod 26 is fixedly connected to the bottom of the limiting spring 251, and the connecting rod 26 passes through the bottom of the demoulding barrel 25. The connecting rod 26 can squeeze the top block 252 fixedly connected to the top into the interior of the demoulding barrel 25 under the pushing action of the movable plate 210, so that the top block 252 is ejected from the interior of the lower mold 24 to eject the molded plastic.

[0024] See also Figure 1-2 The injection molding assembly 1 includes an injection molding machine 11, and an injection molding tube 12 is fixedly connected to the bottom of the injection molding machine 11. The colloid in the injection molding machine 11 is pushed forward by a screw arranged inside, and the colloid is quickly squeezed through the injection hole 2100 into the cavity formed by the upper mold 23 and the lower mold 24 for shaping. A feed barrel 13 is fixedly connected to the top of the injection molding machine 11.

[0025] See also Figure 1-5A second slide groove 212 is provided on the surface of the side fixing plate 211, and a connecting rod 214 is fixedly connected inside the second slide groove 212 at one end of the side fixing plate 211, and a screw rod 213 is rotatably connected inside the second slide groove 212 at the other end of the side fixing plate 211. The screw rod 213 can rotate under the drive of the rotating motor 215, and under the fixing action of the connecting rod 214, the injection molding machine 11 and the lower upper fixing plate 21 are driven downward to close the mold with the lower mold 24. A protrusion is provided on the side of the injection molding machine 11 and is sleeved on the outside of the screw rod 213 and the connecting rod 214. The protrusion provided on the side of the upper fixing plate 21 is sleeved on the outside of the screw rod 213 and the connecting rod 214. The bottom of the demolding barrel 25 protrudes upward with a fixing column 250, and the top block 252 is sleeved on the outside of the fixing column 250. The top of the limit spring 251 is fixedly connected to the top of the inner cavity of the demolding barrel 25, the bottom of the top block 252 protrudes outward and the top is clamped with the limit spring 251, and the limit spring 251 can restore the top block 252 to its original position after the connecting rod 26 drives the top top block 252 to push out the plastic. A slide groove 2101 is opened inside the movable plate 210, and the rotating member 281 is slidably connected to the inside of the slide groove 2101. A plurality of limit blocks 29 are fixedly connected to the surface of the fixing member 28, and the movable plate 210 is slidably connected to the inside of the limit block 29. The top of the side fixed plate 211 is fixedly connected to the rotating motor 215, and the output end of the rotating motor 215 passes through the top of the side fixed plate 211 and is fixedly connected to the inner cavity of the second slide groove 212 with the screw rod 213.

[0026] When in use, first, the injection tube 12 fixedly connected to the top of the injection molding machine 11 overlaps with the injection hole 2100, and then the upper mold 23 fixedly connected to the bottom of the upper fixed plate 21 is rotated by the screw rod 213 and fixed by the connecting rod 214 to close the mold with the lower mold 24. The colloid in the injection molding machine 11 is pushed forward by the screw rod arranged inside, and the colloid is quickly squeezed through the injection hole 2100 to the cavity formed by the upper mold 23 and the lower mold 24 for shaping. After the molded plastic is cooled, the movable plate 210 slidably connected to the inside of the limit block 29 and the rotating member 281 rotatably connected to the inside of the movable groove 280 which is recessed downward on the surface of the fixed member 28, when the rotating member 281 rotates, the top raised part slides and connects Inside the slide groove 2101, the movable plate 210 is driven to move upward until it stops when it moves to the side of the connecting rod 26. The cylinder 27 can drive the fixing part 28 and the movable plate 210 connected on the surface to move inward. During the movement, the top inclined surface of the movable plate 210 will push the connecting rod 26 to move toward the inside of the demolding barrel 25, driving the ejector block 252 to eject the plastic from the outside of the lower mold 24. After the connecting rod 26 drives the ejector block 252 to eject the lower mold 24, the limit spring 251 is clamped between the top of the inner cavity of the demolding barrel 25 and the bottom of the ejector block 252. After the ejector block 252 ejects the molded plastic, the ejector block 252 will be driven back to the inside of the lower mold 24 under the rebound action of the limit spring 251.

[0027] In this embodiment, a demoulding mechanism of a vertical injection molding machine, among the above-mentioned components, its own structural features and working principles all adopt the existing technology and will not be described in detail here.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A demoulding mechanism of a vertical injection molding machine, comprising an injection molding assembly (1), characterized in that: A demoulding component (2) is provided at the bottom of the injection molding component (1); The demoulding assembly (2) comprises an upper fixing plate (21), an injection hole (2100) is provided in the middle of the upper fixing plate (21), an upper mold (23) is protruded downwardly from the bottom of the upper fixing plate (21), a protrusion is provided on the side of the upper fixing plate (21) and a side fixing plate (211) is sleeved on the outside, a lower fixing plate (22) is fixedly connected to the bottom of the side fixing plate (211), a side of the lower fixing plate (22) extends downwardly and is fixedly connected to a cylinder (27), a fixing piece (28) is fixedly connected to the top of the cylinder (27), and a movable groove (28) is recessed inwardly on the side of the fixing piece (28) 280), the middle of the movable groove (280) is rotatably connected to a rotating member (281), the outer portion of the rotating member (281) is slidably sleeved with a movable plate (210), the middle portion of the lower fixed plate (22) is upwardly protruding with a lower mold (24), the bottom of the lower fixed plate (22) is fixedly connected to a demoulding barrel (25), the interior of the lower mold (24) is movably connected to a top block (252), the outer portion of the top block (252) is sleeved with a limit spring (251), the bottom of the limit spring (251) is fixedly connected to a connecting rod (26), and the connecting rod (26) passes through the bottom of the demoulding barrel (25); The injection molding assembly (1) comprises an injection molding machine (11), the bottom of the injection molding machine (11) is fixedly connected to an injection molding tube (12), and the top of the injection molding machine (11) is fixedly connected to a material feeding barrel (13).

2. A demoulding mechanism for a vertical injection molding machine according to claim 1, characterized in that: A second sliding groove (212) is provided on the surface of the side fixing plate (211); a connecting rod (214) is fixedly connected inside the second sliding groove (212) at one end of the side fixing plate (211); and a screw rod (213) is rotatably connected inside the second sliding groove (212) at the other end of the side fixing plate (211).

3. A demoulding mechanism for a vertical injection molding machine according to claim 2, characterized in that: The side of the injection molding machine (11) is provided with a protrusion which is sleeved on the outside of the screw rod (213) and the connecting rod (214); the protrusion provided on the side of the upper fixing plate (21) is sleeved on the outside of the screw rod (213) and the connecting rod (214).

4. A demoulding mechanism for a vertical injection molding machine according to claim 1, characterized in that: A fixing column (250) protrudes upward from the bottom of the demoulding barrel (25), and the top block (252) is sleeved on the outside of the fixing column (250).

5. The demoulding mechanism of a vertical injection molding machine according to claim 1, characterized in that: The top of the limit spring (251) is fixedly connected to the top of the inner cavity of the demoulding barrel (25), and the bottom of the top block (252) protrudes outwards and the top is clamped with the limit spring (251).

6. A demoulding mechanism for a vertical injection molding machine according to claim 1, characterized in that: A slide groove (2101) is provided inside the movable plate (210), the rotating member (281) is slidably connected inside the slide groove (2101), a plurality of limit blocks (29) are fixedly connected to the surface of the fixed member (28), and the movable plate (210) is slidably connected inside the limit blocks (29).

7. A demoulding mechanism for a vertical injection molding machine according to claim 2, characterized in that: A rotating motor (215) is fixedly connected to the top of the side fixing plate (211), and an output end of the rotating motor (215) passes through the top of the side fixing plate (211) and is fixedly connected to the screw rod (213) in the inner cavity of the second sliding groove (212).

8. The demoulding mechanism of a vertical injection molding machine according to claim 1, characterized in that: A motor is arranged inside the fixing member (28), and an output end of the motor passes through the fixing member (28) and is fixedly connected to the surface of the movable groove (280) with the rotating member (281).

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