Exhaust device for injection molding machine

Abstract

The utility model relates to an exhaust device for an injection molding machine, which belongs to the technical field of gas treatment of the injection molding machine and comprises a box body, the box body is mounted on a support plate for fixing a mold closing system, the box body is provided with a first movable channel for an injection molding screw rod to penetrate out of the box body for injection molding, and the box body is provided with a second movable channel; the first movable channel is communicated with the second movable channel, an exhaust pipe is inserted into the box body through the second movable channel, a guide groove is formed in the box body, the guide groove is communicated with the first movable channel and the second movable channel, a blowing assembly is arranged in the first box body, and the blowing assembly blows harmful gas to flow to the exhaust pipe along a guide face to be extracted. The utility model has the effects of reducing the diffusion of harmful gas to the factory building and enhancing the extraction of the harmful gas.

Description

Technical Field

[0001] The present application relates to the technical field of gas treatment for injection molding machines, and in particular to an exhaust device for injection molding machines. Background Art

[0002] Injection molding machines are the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. They are divided into vertical, horizontal, and all-electric types. Injection molding machines can heat plastics and apply high pressure to molten plastics to make them eject and fill the mold cavity.

[0003] Injection molding machines are generally composed of an injection molding system and a clamping mold system. A support plate is generally set between the clamping mold system and the injection molding system. The clamping mold system is fixed on the support plate, and the injection molding system passes through the support plate to perform injection molding in the clamping mold system. Since harmful gases are generated during the injection molding process, an exhaust pipe is generally installed above the support plate to extract the harmful gases to a designated location for unified treatment.

[0004] Regarding the above-mentioned related technologies, since the exhaust pipe is fixed on the outside of the support plate and is located directly above the extrusion screw, when the gas is released from the mouth of the support plate, the gas has diffused to the outside, and the exhaust pipe can only extract most of the gas above the extrusion screw. Although some gas is also extracted below the extrusion screw, some gas still diffuses into the factory. Utility Model Content

[0005] In order to reduce the diffusion of harmful gases into the factory and enhance the extraction of harmful gases, the present application provides an exhaust device for an injection molding machine.

[0006] The exhaust device for an injection molding machine provided in the present application adopts the following technical solution:

[0007] An exhaust device for an injection molding machine comprises a box body, wherein the box body is mounted on a support plate for fixing a mold clamping system, the box body is provided with a first movable channel for an injection molding screw to pass through the box body for injection molding, the box body is provided with a second movable channel, the first movable channel is connected to the second movable channel, an exhaust pipe is inserted into the box body through the second movable channel, a guide groove is provided in the box body, the guide groove is connected to the first movable channel and the second movable channel, a blowing assembly is arranged in the box body, and the blowing assembly blows harmful gases along a guide surface to flow to the exhaust pipe for extraction.

[0008] By adopting the above technical solution, the harmful gas flows from the support plate to the first active channel. When the harmful gas flows to the outlet of the first active channel, the blowing assembly blows the harmful gas to change its flow direction. The harmful gas flows along the guide groove in the first active channel and is finally extracted by the exhaust pipe. By changing the flow direction of the harmful gas, the harmful gas is kept in the first active channel, thereby reducing the diffusion of the harmful gas to the factory building and strengthening the extraction of the harmful gas.

[0009] Optionally, the box body includes two mounting shells, each of which is provided with a first through slot and a second through slot, and the mounting shell is detachably mounted on a support plate, the two mounting shells are spliced ​​with each other, the two first through slots form the first movable channel, and the two second through slots form the second movable channel.

[0010] By adopting the above technical solution, the two installation shells are spliced ​​with each other, the two first through grooves jointly surround the injection screw, and the two second through grooves jointly surround the exhaust pipe, which is convenient for installation.

[0011] Optionally, the blowing assembly includes a fixing plate, which is arranged in the mounting shell, a first air inlet duct is opened on the mounting shell, a second air inlet duct is opened on the fixing plate, the first air inlet duct and the second air inlet duct are connected, and an air nozzle is arranged on the fixing plate, and the air nozzle is connected to the second air inlet duct.

[0012] By adopting the above technical solution, air is pumped into the first air inlet duct, and the air flows to the second air inlet duct through the first air inlet duct, and then the air is discharged from the air nozzle after passing through the second air inlet duct, thereby blowing air into the first channel to change the flow direction of harmful gases.

[0013] Optionally, a sealing sleeve is provided on the exhaust pipe, and the sealing sleeve is sealed with the second movable channel.

[0014] By adopting the above technical solution, the sealing sleeve seals the second active channel, thereby reducing harmful leakage from the second active channel.

[0015] Optionally, the mounting shell is provided with a T-shaped block, the support plate is provided with a T-shaped slot, and the T-shaped block is slidably arranged in the T-shaped slot.

[0016] By adopting the above technical solution, the T-block of the mounting shell is inserted into the T-slot, so that the mounting shell can be moved along the T-slot, which facilitates the installation and removal of the mounting shell.

[0017] Optionally, the exhaust pipe is fixed with a mounting plate, and the mounting plate is bolted to the box body.

[0018] By adopting the above technical solution, after the exhaust pipe is inserted into the second movable groove, the mounting plate is fixed on the box body, so that the exhaust pipe is fixed on the box body to avoid leakage caused by shaking of the exhaust pipe, and at the same time strengthen the fixation of the two mounting shells.

[0019] Optionally, the guide groove is an arc-shaped groove, and a plurality of the blowing assemblies are arranged along the width direction of the mounting shell.

[0020] By adopting the above technical solution, the design direction of the arc groove is more convenient for gas reversal, and multiple blowing components blow in one direction at the same time to enable more harmful gases to be reversed, thereby reducing the leakage of harmful gases from the installation shell.

[0021] Optionally, one of the mounting shells is provided with an insertion rod, a locking groove is provided on the insertion rod, and the other mounting shell is provided with a slot, a slide groove connected to the slot is provided on the mounting shell, a spring is provided in the slide groove, the spring is connected with a plug-in block, a guide slope is provided on the side of the plug-in block facing the insertion rod, the plug-in block is connected with a pull rod, the pull rod passes through the mounting shell, and sealing rings are provided along their respective outer circumferential surfaces on the opposite sides of the two mounting shells.

[0022] By adopting the above technical solution, as the two mounting shells move along the T-slot and approach each other, the insertion rod is gradually inserted into the slot, the insertion rod first contacts the guide slope, and the insertion rod presses the plug-in block into the slide groove. When the two mounting shells are spliced ​​with each other, the plug-in block is just opposite the card slot, and the spring drives the plug-in block to extend into the card slot, thereby realizing the rapid fixation of the two mounting shells. When the two mounting shells need to be disassembled, just pull the pull rod, and the pull rod drives the plug-in block to separate from the card slot, and the two mounting shells can be pushed to separate.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The harmful gas flows from the support plate to the first movable channel. When the harmful gas flows to the outlet of the first movable channel, the blowing assembly blows the harmful gas to change its flow direction. The harmful gas flows along the guide groove in the first movable channel and is finally extracted by the exhaust pipe. By changing the flow direction of the harmful gas, the harmful gas is kept in the first movable channel, which reduces the diffusion of the harmful gas to the factory building and strengthens the extraction of the harmful gas.

[0025] 2. As the two mounting shells move along the T-slot and approach each other, the insertion rod is gradually inserted into the slot, the insertion rod first contacts the guide slope, and the insertion rod presses the plug-in block into the slide slot. When the two mounting shells are spliced ​​together, the plug-in block is just opposite the card slot, and the spring drives the plug-in block to extend into the card slot, thereby realizing the rapid fixation of the two mounting shells. When the two mounting shells need to be disassembled, just pull the pull rod, and the pull rod drives the plug-in block to separate from the card slot, and the two mounting shells can be pushed to separate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the structure of the sealing sleeve and the blowing assembly used in the embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the structure of the first air inlet duct and the second air inlet duct used in an embodiment of the present application.

[0029] Figure 4 It is a structural diagram of an embodiment of the present application for embodying the first activity channel.

[0030] Figure 5 yes Figure 4 Enlarged schematic diagram of part A.

[0031] Explanation of the reference numerals: 1. housing; 11. mounting shell; 111. first through groove; 112. second through groove; 113. guide groove; 12. T-block; 13. sealing ring; 14. plug-in rod; 141. snap-in groove; 15. slot; 151. slide groove; 16. spring; 17. plug-in block; 171. guide slope; 18. pull rod; 19. first movable channel; 110. second movable channel; 2. support plate; 21. T-slot; 3. blowing assembly; 31. fixing plate; 32. first air inlet duct; 33. second air inlet duct; 34. air nozzle; 4. exhaust pipe; 5. sealing sleeve; 6. mounting plate. Implementation

[0032] The following is combined with Figure 1-5 This application is described in further detail.

[0033] An embodiment of the present application discloses an exhaust device for an injection molding machine.

[0034] like Figure 1 , Figure 2 and Figure 3The exhaust device for an injection molding machine includes a box body 1, which includes two mounting shells 11. The two mounting shells 11 have first through grooves 111 formed on opposite sides along their respective length directions. The two first through grooves 111 face each other and pass through two ends of the mounting shells 11. The two mounting shells 11 have guide grooves 113 formed on opposite sides. The guide grooves 113 are arc-shaped grooves and communicate with the first through grooves 111. The two mounting shells 11 have second through grooves 112 formed on their respective height directions. The second through grooves 112 are located above the guide grooves 113 and pass through the top of the mounting shells 11. The support plate 2 of the injection molding machine has T-slots 21 formed on its length direction. A T-block 12 is fixed on one side of the mounting shell 11 facing the support plate 2. The T-block 12 is inserted into the T-slot 21 and slides along the T-slot 21. The opposite sides of the mounting shells 11 are both pasted with sealing rings 13 along their respective circumferential surfaces.

[0035] like Figure 4 and Figure 5 A plug rod 14 is provided on one mounting shell 11, and the plug rod 14 is provided at one end of the mounting shell 11 away from the support plate 2, and the plug rod 14 is directly facing the other mounting shell 11, and a clamping groove 141 is provided on the top of the plug rod 14, and a slot 15 is provided on the other mounting shell 11, and the slot 15 is adapted to the plug rod 14, and a slide groove 151 is provided on the inner top wall of the slot 15, and the slide groove 151 is connected to the slot 15, and a spring 16 is fixed in the slide groove 151, and the spring 16 is connected to a plug block 17, and a guide inclined surface 171 is provided on the side of the plug block 17 facing the plug rod 14, and a pull rod 18 is fixed to the plug block 17, and the pull rod 18 passes through the spring 16 and passes out from the top of the mounting shell 11.

[0036] like Figure 2 and Figure 3 The two mounting shells 11 are spliced ​​with each other so that the two first through grooves 111 are spliced ​​with each other to form a first movable channel 19, and the two second through grooves 112 are spliced ​​with each other to form a second movable channel 110. A blowing assembly 3 is arranged at one end of the guide groove 113 away from the support plate 2. The blowing assembly 3 includes a fixing plate 31, and the fixing plate 31 is fixed in the mounting shell 11. A first air inlet duct 32 is opened on the mounting shell 11, and a second air inlet duct 33 is opened on the fixing plate 31. The first air inlet duct 32 and the second air inlet duct 33 are connected. An air nozzle 34 is arranged on the fixing plate 31, and the air nozzle 34 is connected with the second air inlet duct 33. The air nozzle 34 is located above the injection screw and the air nozzle 34 blows downward.

[0037] An exhaust pipe 4 is inserted into the second movable channel 110, and a sealing sleeve 5 is wrapped on the exhaust pipe 4 to close the second movable channel 110. The exhaust pipe 4 is fixed with a mounting plate 6, and the exhaust pipe 4 passes through the mounting plate 6. Both ends of the mounting plate 6 are bolted to the tops of the two mounting shells 11.

[0038] During installation, the two mounting shells 11 move along the T-slot 21 and approach each other, the insertion rod 14 is gradually inserted into the slot 15, the insertion rod 14 first contacts the guide slope 171, and the insertion rod 14 presses the plug-in block 17 into the slide groove 151. When the two mounting shells 11 are spliced ​​with each other, the plug-in block 17 is just opposite to the snap-in groove 141, and the spring 16 drives the plug-in block 17 to extend into the snap-in groove 141, thereby realizing the rapid fixation of the two mounting shells 11, the two second through grooves 112 surround the exhaust pipe 4, and then the mounting plate 6 fixes the exhaust pipe 4.

[0039] During vacuuming, the harmful gas flows from the support plate 2 to the first active channel 19. When the harmful gas flows to the outlet of the first active channel 19, air is pumped into the first air inlet 32. The air flows through the first air inlet 32 ​​to the second air inlet 33. Then the air passes through the second air inlet 33 and is discharged from the air nozzle 34, thereby blowing the harmful gas to change its flow direction. The harmful gas flows along the guide groove 113 in the first active channel 19 and is finally extracted by the vacuum pipe 4. By changing the flow direction of the harmful gas, the harmful gas is kept in the first active channel 19, thereby reducing the diffusion of the harmful gas to the factory building and strengthening the extraction of the harmful gas.

[0040] The implementation principle of the embodiment of the present application is as follows: the harmful gas flows from the support plate 2 into the first active channel 19. When the harmful gas flows toward the outlet of the first active channel 19, the blowing assembly 3 blows the harmful gas to change its flow direction. The harmful gas flows along the guide groove 113 in the first active channel 19 and is finally extracted by the exhaust pipe 4. By changing the flow direction of the harmful gas, the harmful gas is kept in the first active channel 19, thereby reducing the diffusion of the harmful gas to the factory building and strengthening the extraction of the harmful gas.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An exhaust device for an injection molding machine, characterized in that: The invention comprises a box body (1), wherein the box body (1) is mounted on a support plate (2) for fixing a mold clamping system, the box body (1) is provided with a first movable channel (19) for an injection screw to pass through the box body (1) for injection molding, the box body (1) is provided with a second movable channel (110), the first movable channel (19) is connected to the second movable channel (110), an exhaust pipe (4) is inserted into the box body (1) through the second movable channel (110), a guide groove (113) is provided in the box body (1), the guide groove (113) is connected to the first movable channel (19) and the second movable channel (110), a blowing assembly (3) is arranged in the box body (1), and the blowing assembly (3) blows harmful gas along a guide surface to flow to the exhaust pipe (4) for extraction.

2. The exhaust device for an injection molding machine according to claim 1, characterized in that: The box body (1) comprises two mounting shells (11), the mounting shells (11) are provided with a first through slot (111) and a second through slot (112), the mounting shells (11) are detachably mounted on a support plate (2), the two mounting shells (11) are spliced ​​with each other, the two first through slots (111) enclose the first movable channel (19), and the two second through slots (112) enclose the second movable channel (110).

3. The exhaust device for an injection molding machine according to claim 2, characterized in that: The blowing assembly (3) comprises a fixing plate (31), the fixing plate (31) being arranged in the mounting shell (11), the mounting shell (11) being provided with a first air inlet passage (32), the fixing plate (31) being provided with a second air inlet passage (33), the first air inlet passage (32) being connected to the second air inlet passage (33), the fixing plate (31) being provided with an air nozzle (34), the air nozzle (34) being connected to the second air inlet passage (33).

4. The exhaust device for an injection molding machine according to claim 1, characterized in that: The exhaust pipe (4) is sleeved with a sealing sleeve (5), and the sealing sleeve (5) seals the second movable channel (110).

5. The exhaust device for an injection molding machine according to claim 2, characterized in that: The mounting shell (11) is provided with a T-shaped block (12), the support plate (2) is provided with a T-shaped slot (21), and the T-shaped block (12) is slidably arranged in the T-shaped slot (21).

6. The exhaust device for an injection molding machine according to claim 1, characterized in that: The exhaust pipe (4) is fixed with a mounting plate (6), and the mounting plate (6) is bolted to the box body (1).

7. The exhaust device for an injection molding machine according to claim 2, characterized in that: The guide groove (113) is an arc-shaped groove, and a plurality of the blowing components (3) are arranged along the width direction of the mounting shell (11).

8. The exhaust device for an injection molding machine according to claim 2, characterized in that: One of the mounting shells (11) is provided with an insertion rod (14), and a snap-in groove (141) is provided on the insertion rod (14); the other mounting shell (11) is provided with a slot (15), and a slide groove (151) connected to the slot (15) is provided on the mounting shell (11); a spring (16) is provided in the slide groove (151), and the spring (16) is connected to a plug-in block (17); a guide slope (171) is provided on the side of the plug-in block (17) facing the insertion rod (14); the plug-in block (17) is connected to a pull rod (18), and the pull rod (18) passes through the mounting shell (11); sealing rings (13) are provided on the opposite sides of the two mounting shells (11) along their respective outer peripheral surfaces.

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