Exhaust device of injection mold

Abstract

The utility model relates to the technical field of injection molds, in particular to an injection mold exhaust device which comprises a base and a top plate, the base is fixedly connected with the top plate through a supporting column, the lower surface of the top plate is fixedly connected with two hydraulic cylinders, hydraulic rods of the two hydraulic cylinders are fixedly connected with an upper mold, and the lower surface of the upper mold is fixedly connected with a forming block. An exhaust mechanism is arranged in the forming block, and the forming block and the upper mold are fixedly connected with the outer wall of the injection molding pipeline. Air enters an air inlet pipe and drives a plug block to move, the plug block drives a supporting plate to rotate, the supporting plate drives a vertical rod to move, the vertical rod drives a pin rod to move through a sliding groove formed in the vertical rod, the pin rod drives a sliding rod to move, and the sliding rod slides in a sleeve and compresses a first spring. And air generated during injection molding is discharged from the gap generated by separation of the plug block and the cylinder body, and is discharged to the outside through the cylinder body, so that the air generated in the injection molding process is conveniently discharged during injection molding.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold exhaust device. Background Art

[0002] Injection molding is widely used due to its advantages such as high production efficiency, easy automation, and the ability to form parts with complex shapes. The temperature of the injection mold used in injection molding needs to be controlled during use.

[0003] For example, an injection mold with patent number CN221022218U includes a first mold, a second mold, a low-temperature storage device and a high-temperature storage device; the second mold can be moved horizontally and then molded with the first film; a temperature control channel is opened on the first mold, and the temperature control channel is arranged in a serpentine shape from top to bottom. There is temperature control liquid in the temperature control channel, and a driving pump is provided on the first mold to pump the temperature control liquid in the temperature control channel. The above document still has shortcomings. When in use, the temperature control liquid with a higher temperature in the high-temperature storage device is pumped into the temperature control channel by the driving pump, so that the mold is heated more efficiently. The driving pump can also pump the temperature control liquid at the handover temperature in the low-temperature storage device into the temperature control channel to cool the mold. However, when the injection mold is in use, the hot melt plastic flows in the cavity, squeezing and compressing the air in the cavity. If it cannot be effectively discharged, it will cause trapped air. The gas discharge is not smooth, resulting in incomplete filling of the mold groove in the mold, which will affect the injection molding of the product. Therefore, a corresponding exhaust mechanism is required to discharge the trapped air. During injection molding, it is not convenient to discharge the air generated during the injection molding process. At the same time, the exhaust mechanism will have certain wear and tear or even damage during long-term use, which will affect the exhaust. During use, it is not convenient to disassemble and maintain the exhaust mechanism. Utility Model Content

[0004] The utility model aims to solve the problem that it is inconvenient to discharge the air generated in the injection molding process, and proposes an injection mold exhaust device.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An injection mold exhaust device is designed, comprising a base and a top plate, the base is fixedly connected to the top plate through a support, two hydraulic cylinders are fixedly connected to the lower surface of the top plate, the hydraulic rods of the two hydraulic cylinders are fixedly connected to an upper mold, a molding block is fixedly connected to the lower surface of the upper mold, an exhaust mechanism is arranged inside the molding block, the molding block and the upper mold are fixedly connected to the outer wall of an injection pipe, and a clamping mechanism is arranged inside the molding block.

[0007] Preferably, the exhaust mechanism includes a cylinder, the outer wall of the cylinder is clearance-matched with the forming block, a sleeve is fixedly connected to the interior of the cylinder, a sliding rod is slidably connected to the interior of the sleeve, a first spring is arranged inside the sleeve, two ends of the first spring are respectively fixedly connected to the sleeve and the sliding rod, a pin is fixedly connected to the surface of the sliding rod, the outer wall of the pin is slidably connected to a sliding groove arranged in the vertical rod, a support plate is fixedly connected to the lower end of the vertical rod, the end of the support plate is rotatably connected to the cylinder through a pin shaft, a plug is fixedly connected to the lower surface of the support plate, and the outer wall of the plug is clearance-matched with the cylinder.

[0008] Preferably, the locking mechanism includes a locking rod, the outer wall of the locking rod is slidably connected to the forming block, the end of the locking rod is clamped with a slot provided in the cylinder, the outer wall of the locking rod is fixedly connected to a block, the outer wall of the block is slidably connected to the forming block, the outer wall of the block is fixedly connected to a support rod, the outer wall of the locking rod is sleeved with a second spring, and the two ends of the second spring are respectively fixedly connected to the block and the forming block.

[0009] Preferably, an air inlet pipe is provided inside the forming block, a lower mold is fixed to the upper surface of the base by bolts, and a forming groove is provided inside the lower mold.

[0010] Preferably, a slider is fixedly connected to the outer wall of the upper mold, and the slider is slidably connected to the outer wall of the connecting rod.

[0011] Preferably, the upper end of the connecting rod is fixedly connected to the top plate.

[0012] The utility model proposes an injection mold exhaust device, which has the beneficial effects of: through the cooperation between the cylinder, sleeve, slide rod, first spring, pin rod, vertical rod, support plate and plug block, air enters the interior of the air intake pipe and drives the plug block to move, the plug block drives the support plate to rotate, the support plate drives the vertical rod to move, the vertical rod drives the pin rod to move through the internally arranged slide groove, the pin rod drives the slide rod to move, the slide rod slides inside the sleeve and compresses the first spring, the air generated during injection molding is discharged from the notch formed by the separation of the plug block and the cylinder, and is discharged to the outside through the cylinder, so that when injection molding is performed, it is convenient to discharge the air generated during the injection molding process.

[0013] Through the cooperation between the locking rod, the block, the support rod and the second spring, when the exhaust mechanism needs to be disassembled and maintained, the two support rods are manually moved, and the two support rods move back to back, the support rod drives the block to slide, the block drives the locking rod to slide, the locking rod compresses the second spring, the end of the locking rod is separated from the slot position set in the cylinder, the cylinder is taken out, and the exhaust mechanism is maintained. When in use, the exhaust mechanism is easy to disassemble and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a structural sectional view of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the connection between the upper mold, the molding block and the injection pipe in the utility model;

[0017] Figure 4 It is a structural schematic diagram of the connection between the cylinder, sleeve and slide rod in the utility model;

[0018] Figure 5 It is a structural schematic diagram of the cylinder in the utility model;

[0019] Figure 6 It is a schematic structural diagram of the connection between the locking rod, the block and the supporting rod in the utility model.

[0020] In the figure: 1, base, 2, top plate, 3, exhaust mechanism, 301, cylinder, 302, sleeve, 303, slide rod, 304, first spring, 305, pin rod, 306, vertical rod, 307, support plate, 308, plug block, 3a1, sealing gasket, 4, clamping mechanism, 401, locking rod, 402, block, 403, support rod, 404, second spring, 5, hydraulic cylinder, 6, upper mold, 7, molding block, 8, injection pipe, 9, air inlet pipe, 10, lower mold, 11, molding groove, 12, slider, 13, connecting rod. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings:

[0022] Embodiment 1:

[0023] Refer to the attached Figure 1-6 : In this embodiment, an injection mold exhaust device includes a base 1 and a top plate 2. The base 1 is fixedly connected to the top plate 2 through a support. Two hydraulic cylinders 5 are fixedly connected to the lower surface of the top plate 2. The hydraulic rods of the two hydraulic cylinders 5 are fixedly connected to an upper mold 6. The two hydraulic cylinders 5 drive the upper mold 6 to move. A molding block 7 is fixedly connected to the lower surface of the upper mold 6. The upper mold 6 drives the molding block 7 to move. An exhaust mechanism 3 is arranged inside the molding block 7. The exhaust mechanism 3 facilitates the exhaust of air generated during injection molding.

[0024] The molding block 7 and the upper mold 6 are both fixedly connected to the outer wall of the injection molding pipe 8, and the injection molding pipe 8 is connected to the external feeding system. A clamping mechanism 4 is arranged inside the molding block 7, and the clamping mechanism 4 clamps and fixes the cylinder 301 inside the molding block 7. An air inlet pipe 9 is arranged inside the molding block 7, and the air inlet pipe 9 is connected to the notch position where the plug block 308 is located. The upper surface of the base 1 is fixedly connected to the lower mold 10 by bolts, and a molding groove 11 is arranged inside the lower mold 10. The molding groove 11 cooperates with the molding block 7 for injection molding. A slider 12 is fixedly connected to the outer wall of the upper mold 6, and the upper mold 6 drives the slider 12 to move. The slider 12 is slidably connected to the outer wall of the connecting rod 13, and the slider 12 slides on the outer wall of the connecting rod 13. The slider 12 and the connecting rod 13 guide the movement of the upper mold 6, and the upper end of the connecting rod 13 is fixedly connected to the top plate 2.

[0025] The exhaust mechanism 3 includes a cylinder 301, a sleeve 302, a slide bar 303, a first spring 304, a pin 305, a vertical rod 306, a support plate 307 and a plug block 308. The outer wall of the cylinder 301 is clearance-matched with the forming block 7. The cylinder 301 is fixedly connected with the sleeve 302. The sleeve 302 is slidably connected with the slide bar 303. The slide bar 303 slides inside the sleeve 302. The sleeve 302 is provided with a first spring 304. The two ends of the first spring 304 are respectively fixedly connected with the sleeve 302 and the slide bar 303. The first spring 304 can drive the slide bar 303 to slide under the action of elasticity.

[0026] A pin 305 is fixedly connected to the surface of the slide bar 303, and the slide bar 303 moves together with the pin 305. The outer wall of the pin 305 is slidably connected to the slide groove provided in the vertical rod 306. The pin 305 drives the vertical rod 306 to move through the slide groove provided in the vertical rod 306. The lower end of the vertical rod 306 is fixedly connected to a support plate 307, and the vertical rod 306 moves together with the support plate 307. The end of the support plate 307 is rotatably connected to the cylinder 301 through a pin shaft. A plug 308 is fixedly connected to the lower surface of the support plate 307. The support plate 307 drives the plug 308 to move. The outer wall of the plug 308 is in clearance with the cylinder 301, and the plug 308 blocks the position of the internal notch of the cylinder 301.

[0027] Air enters the interior of the air intake pipe 9 and drives the plug block 308 to move, the plug block 308 drives the support plate 307 to rotate, the support plate 307 drives the vertical rod 306 to move, the vertical rod 306 drives the pin rod 305 to move through the internally arranged slide groove, the pin rod 305 drives the slide rod 303 to move, the slide rod 303 slides inside the sleeve 302 and compresses the first spring 304, the air generated during injection molding is discharged from the gap formed by the separation of the plug block 308 and the cylinder 301, and is discharged to the outside through the cylinder 301, so that when injection molding is performed, it is convenient to discharge the air generated during the injection molding process.

[0028] The clamping mechanism 4 includes a locking rod 401, a block 402, a support rod 403 and a second spring 404. The outer wall of the locking rod 401 is slidably connected to the forming block 7. The locking rod 401 slides inside the forming block 7. The end of the locking rod 401 is clamped with a clamping groove provided in the cylinder 301. The locking rod 401 cooperates with the clamping groove provided in the cylinder 301 to clamp and fix the cylinder 301 inside the forming block 7. The outer wall of the locking rod 401 is fixedly connected to the block 402. The locking rod 401 and the block 402 move together.

[0029] The outer wall of the block 402 is slidably connected to the forming block 7, and the block 402 slides inside the forming block 7. The outer wall of the block 402 is fixedly connected with a support rod 403, and the support rod 403 drives the block 402 to move. The outer wall of the lock rod 401 is sleeved with a second spring 404, and the second spring 404 can drive the block 402 to slide under the action of elasticity. The two ends of the second spring 404 are respectively fixedly connected to the block 402 and the forming block 7. The model of the spring is selected according to the actual use requirements to meet the work needs;

[0030] When the exhaust mechanism 3 needs to be disassembled and maintained, the two support rods 403 are moved manually, and the two support rods 403 move in opposite directions, the support rods 403 drive the block 402 to slide, the block 402 drives the locking rod 401 to slide, the locking rod 401 compresses the second spring 404, and the end of the locking rod 401 is separated from the slot position set in the cylinder 301, the cylinder 301 is taken out, and the exhaust mechanism 3 is maintained. When in use, it is convenient to disassemble and maintain the exhaust mechanism 3.

[0031] Working principle:

[0032] When using an injection mold exhaust device to exhaust the injection mold;

[0033] Injection molding exhaust stage:

[0034] The two hydraulic cylinders 5 are started, and the two hydraulic cylinders 5 drive the upper mold 6 to move downward, and the upper mold 6 drives the molding block 7 to move, and the molding block 7 is inserted into the molding groove 11. The hydraulic cylinders 5 are closed, and the raw material is injected into the space between the molding block 7 and the molding groove 11 through the injection pipe 8. During the injection molding process, if there is air mixed between the molding block 7 and the molding groove 11, the air enters the interior of the air inlet pipe 9 and drives the plug 308 to move, and the plug 308 drives the support plate 307 to rotate, and the support plate 307 drives the vertical rod 306 to move, and the vertical rod 306 drives the vertical rod 306 through the internally arranged slide groove. The movable pin 305 moves, and the pin 305 drives the slide bar 303 to move. The slide bar 303 slides inside the sleeve 302 and compresses the first spring 304. The air generated during injection molding is discharged from the gap formed by the separation of the plug block 308 and the cylinder 301, and is discharged to the outside through the cylinder 301. When the injection molding is performed, it is convenient to discharge the air generated during the injection molding process. After the air is discharged, the first spring 304 drives the slide bar 303 to slide in the opposite direction under the elastic action, and then the plug block 308 blocks the gap of the cylinder 301 in the opposite direction of the above-mentioned movement.

[0035] Injection molding completion stage:

[0036] After the injection molding is completed, the hydraulic cylinder 5 is started in the reverse direction, the molding block 7 moves upward, the injection molded workpiece is inside the molding groove 11, and the molded workpiece is taken out. The bulges generated at the positions of the injection molding pipe 8 and the air intake pipe 9 after the workpiece is molded can be processed by the nozzle pliers;

[0037] Exhaust mechanism disassembly stage:

[0038] When it is necessary to disassemble and maintain the exhaust mechanism 3, the two support rods 403 are moved manually, and the two support rods 403 move in opposite directions, and the support rods 403 drive the block 402 to slide, and the block 402 drives the locking rod 401 to slide, and the locking rod 401 compresses the second spring 404, and the end of the locking rod 401 is separated from the slot position set in the cylinder 301, and the cylinder 301 is taken out to maintain the exhaust mechanism 3. When in use, it is convenient to disassemble and maintain the exhaust mechanism 3. After the maintenance is completed, the cylinder 301 is put back, and the support rods 403 on both sides are loosened. The second spring 404 drives the block 402 to slide in the opposite direction under the elastic action, and the block 402 drives the locking rod 401 to slide in the opposite direction, and the end of the locking rod 401 is inserted into the slot set in the cylinder 301 to clamp and fix the cylinder 301 inside the forming block 7.

[0039] Embodiment 2:

[0040] Refer to the attached Figure 1-6 : In this embodiment, an injection mold exhaust device, the exhaust mechanism 3 also includes a sealing gasket 3a1, the sealing gasket 3a1 is fixed to the outer wall of the plug 308, the sealing gasket 3a1 is made of graphite material, and the sealing gasket 3a1 increases the sealing between the plug 308 and the cylinder 301;

[0041] Through the action of the sealing gasket 3a1 , the sealing gasket 3a1 is fixed to the outer wall of the plug block 308 . The sealing gasket 3a1 is made of graphite material. The sealing gasket 3a1 increases the sealing performance between the plug block 308 and the cylinder body 301 .

[0042] Working principle:

[0043] The sealing gasket 3a1 is fixed to the outer wall of the plug block 308 . The sealing gasket 3a1 is made of graphite material and increases the sealing performance between the plug block 308 and the cylinder body 301 .

[0044] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. An injection mold exhaust device, comprising a base (1) and a top plate (2), wherein the base (1) is fixedly connected to the top plate (2) via a support, and characterized in that: Two hydraulic cylinders (5) are fixedly connected to the lower surface of the top plate (2); the hydraulic rods of the two hydraulic cylinders (5) are fixedly connected to an upper mold (6); the lower surface of the upper mold (6) is fixedly connected to a molding block (7); an exhaust mechanism (3) is provided inside the molding block (7); the molding block (7) and the upper mold (6) are both fixedly connected to the outer wall of an injection molding pipe (8); and a clamping mechanism (4) is provided inside the molding block (7).

2. An injection mold exhaust device according to claim 1, characterized in that: The exhaust mechanism (3) comprises a cylinder (301), the outer wall of the cylinder (301) is loosely matched with the forming block (7), a sleeve (302) is fixedly connected to the inside of the cylinder (301), a slide bar (303) is slidably connected to the inside of the sleeve (302), a first spring (304) is arranged inside the sleeve (302), two ends of the first spring (304) are fixedly connected to the sleeve (302) and the slide bar (303), respectively. A pin rod (305) is fixedly connected to the surface of the sliding rod (303), and the outer wall of the pin rod (305) is slidably connected to a sliding groove arranged in the vertical rod (306). A support plate (307) is fixedly connected to the lower end of the vertical rod (306), and the end of the support plate (307) is rotatably connected to the cylinder (301) through a pin shaft. A plug block (308) is fixedly connected to the lower surface of the support plate (307), and the outer wall of the plug block (308) is clearance-matched with the cylinder (301).

3. The injection mold exhaust device according to claim 1, characterized in that: The clamping mechanism (4) comprises a locking rod (401), the outer wall of the locking rod (401) is slidably connected to the forming block (7), the end of the locking rod (401) is clamped with a clamping groove arranged in the cylinder (301), the outer wall of the locking rod (401) is fixedly connected to a block (402), the outer wall of the block (402) is slidably connected to the forming block (7), the outer wall of the block (402) is fixedly connected to a support rod (403), the outer wall of the locking rod (401) is sleeved with a second spring (404), and the two ends of the second spring (404) are respectively fixedly connected to the block (402) and the forming block (7).

4. The injection mold exhaust device according to claim 1, characterized in that: An air inlet pipe (9) is arranged inside the molding block (7), a lower mold (10) is fixedly connected to the upper surface of the base (1) by bolts, and a molding groove (11) is arranged inside the lower mold (10).

5. The injection mold exhaust device according to claim 1, characterized in that: A slider (12) is fixedly connected to the outer wall of the upper mold (6), and the slider (12) is slidably connected to the outer wall of the connecting rod (13).

6. An injection mold exhaust device according to claim 5, characterized in that: The upper end of the connecting rod (13) is fixedly connected to the top plate (2).

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