Forming die for valve plug of drain valve of washing machine

Abstract

The utility model discloses a forming die for a valve plug of a drain valve of a washing machine, which belongs to the technical field of die forming, aims at solving the problem that bubbles are easy to dissolve in valve plug raw materials when the valve plug raw materials are melted, and comprises a workbench, a plurality of supporting columns are fixedly connected to the bottom of the workbench, and two supporting plates are fixedly connected to the top of the workbench. According to the utility model, the beating mechanism is matched with the exhaust valve, when a valve plug raw material is heated and melted in the conveying cylinder, the servo motor is turned on to drive the second rotating shaft to rotate, and the second rotating shaft drives the cam to rotate and intermittently beat the second connecting rod; a spring is compressed and reset in a reciprocating manner, so that a first connecting rod is driven to rotate, the first connecting rod drives a striking head to strike and vibrate a conveying barrel, bubbles in a hot-melting valve plug raw material are vibrated out through vibration and are discharged through an exhaust valve, and the situation that the bubbles are dissolved into the valve plug raw material, and consequently a cavity is formed in a formed valve plug is avoided; and the production quality of the valve plug is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mould forming technical field, concretely relates to the forming mould of washing machine drain valve plug. BACKGROUND

[0002] The washing machine is a cleaning electric appliance that uses electric energy to generate mechanical action to wash clothes, and the washing machine drain valve plug is a key component in the washing machine, responsible for controlling the discharge of water, and plays an important role in the drainage system of the washing machine, directly affecting the drainage efficiency and use safety of the washing machine, and the main role of the forming mould of the washing machine drain valve plug is to process plastic or rubber material into a plug with a specific shape and size through injection molding or other forming processes to meet the requirements of the washing machine drainage system.

[0003] The forming mould of the washing machine drain valve plug in the prior art with the patent announcement number CN203246025U, the above-mentioned patent includes a bottom mould, a sleeve mould, a plurality of mould cores and a mould sleeve, the mould core is fixed on the bottom mould, the mould sleeve is composed of two half strips, the half strip is slidingly installed on the bottom, and further includes a pneumatic demoulding mechanism for lifting the plug, the bottom mould is provided with an air channel, a through hole communicating with the air channel is arranged in each mould core, and the pneumatic demoulding mechanism is installed in the through hole, when the plug of the washing machine drain valve is demoulded, the plug is lifted upward by pushing the pneumatic demoulding mechanism to move upward, so that the plug is separated from the mould core, which greatly facilitates the demoulding operation of the plug and improves the working efficiency of the plug demoulding; but in actual use, the following problems still exist: starting from reality, the valve plug raw material will absorb external air during the melting process, which will cause the valve plug raw material to easily dissolve into air bubbles, and when the valve plug raw material is injected into the mould, the air bubbles also enter the mould, so that the formed valve plug contains cavities, thereby reducing the production quality of the valve plug.

[0004] Therefore, the forming mould of the washing machine drain valve plug is needed to solve the problem that the valve plug raw material is easily dissolved into air bubbles when melted in the prior art. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing the forming mould of the washing machine drain valve plug to solve the problems in the above background art.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: The forming die of the washing machine drain valve plug, including the workstation, a plurality of support columns are fixedly connected to the bottom of the workstation, two supporting plates are fixedly connected to the top of the workstation, a feeding cylinder is fixedly connected between the two supporting plates, a feeding hopper is fixedly connected to the top of the feeding cylinder near the rear end position, a conveying motor is installed at the rear end of the feeding cylinder, two knocking mechanisms corresponding to the feeding cylinder are arranged on the top of the workstation, an exhaust valve is fixedly connected to the top of the feeding cylinder near the front end position, a feeding pipe is fixedly connected to the front end of the feeding cylinder, a convex frame is fixedly connected to the top of the workstation near the front end position, two connecting columns are fixedly connected to the top of the convex frame, an upper die is fixedly connected to the bottom of the two connecting columns, two electric telescopic rods are fixedly connected to the top of the workstation near the front end position, a lower die is fixedly connected to the top of the two electric telescopic rods, two limiting columns are fixedly connected to the top of the lower die, and heat dissipation fans are installed on the both sides of the convex frame.

[0007] It should be noted that the feeding cylinder is internally provided with spiral conveying blades fixedly connected with the output end of the conveying motor.

[0008] Further, the knocking mechanism comprises two baffles fixedly connected to the top of the workstation, a first rotating shaft is rotatably connected between the two baffles, two pipe sleeves are fixedly connected to the outer wall of the first rotating shaft, a first connecting rod is fixedly connected to the top of each pipe sleeve, a striking head is fixedly connected to the inner side of each first connecting rod, a second connecting rod is fixedly connected to the bottom of each pipe sleeve, a fixed block is fixedly connected to the inner end of each baffle, a spring corresponding to the second connecting rod is fixedly connected to the outer wall of each fixed block, a second rotating shaft is rotatably connected to the bottom position between the two baffles, two cams corresponding to the second connecting rod are fixedly connected to the outer wall of the second rotating shaft, and a servo motor is fixedly connected to the rear end of one of the baffles.

[0009] Further, the ends of the two springs are fixedly connected to the inner side of the bottom of the corresponding second connecting rod.

[0010] As a preferred embodiment, the output end of the servo motor is fixedly connected to the second rotating shaft through the baffle.

[0011] As a preferred embodiment, the end of the feeding pipe is connected to the inside of the upper die.

[0012] As a preferred embodiment, two positioning holes corresponding to the limiting columns are formed in the bottom of the upper die.

[0013] Compared with the prior art, the forming die of the washing machine drain valve plug provided by the utility model has at least the following beneficial effects:

[0014] (1) By setting the knocking mechanism and exhaust valve cooperation, when the valve plug raw material is heated and melted in the feeding cylinder, the servo motor driven second shaft rotation, the second shaft driven cam rotation and the second connecting rod intermittent beating, so that the spring reciprocating compression and reset to drive the first connecting rod rotation, so that the first connecting rod driven striking head to the feeding cylinder for knocking vibration, using vibration will have bubbles in the hot melt valve plug raw material out, and through the exhaust valve, avoid the valve plug raw material inside the bubble into the cavity caused by the valve plug contains, improve the production quality of valve plug.

[0015] (2) By setting the cooling fan, the upper mold and the lower mold after injection are air-cooled, which can significantly shorten the cooling time of the mold, thereby improving the injection cycle, increasing the production efficiency, and effectively preventing the deformation of the mold, prolonging the service life of the mold. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the first perspective structure schematic view of the utility model;

[0017] Figure 2 is the second perspective structure schematic view of the utility model;

[0018] Figure 3 is the third perspective structure schematic view of the utility model;

[0019] Figure 4 is the structure schematic view of the knocking mechanism of the utility model.

[0020] In the figure: 1, workbench;2, support column;3, support plate;4, feeding cylinder;5, feeding hopper;6, conveying motor;7, knocking mechanism;701, baffle;702, first shaft;703, pipe sleeve;704, first connecting rod;705, striking head;706, second connecting rod;707, fixed block;708, spring;709, second shaft;710, cam;711, servo motor;8, exhaust valve;9, feeding pipe;10, convex frame;11, connecting column;12, upper mold;13, electric telescopic rod;14, lower mold;15, limiting column;16, cooling fan. DETAILED DESCRIPTION

[0021] The utility model will be further described below in combination with examples.

[0022] Please refer to Figures 1-4The utility model provides a forming die of washing machine drain valve plug, including workbench 1, a plurality of support columns 2 are fixedly connected to the bottom of workbench 1, two support plates 3 are fixedly connected to the top of workbench 1, the feeding cylinder 4 is fixedly connected between two support plates 3, the feeding cylinder 4 top near rear end position fixedly connected with feeding hopper 5, the feeding cylinder 4 rear end is installed with conveying motor 6, two knock mechanism 7 corresponding with the feeding cylinder 4 are arranged on the top of workbench 1, the feeding cylinder 4 top near front end position fixedly connected with exhaust valve 8, the feeding cylinder 4 front end fixedly connected with feeding pipe 9, the top of workbench 1 near front end position fixedly connected with convex frame 10, two connecting columns 11 are fixedly connected to the top lower surface of convex frame 10, the upper die 12 is fixedly connected to the bottom of two connecting columns 11, two electric telescopic rods 13 are fixedly connected to the top of workbench 1 near front end position, the lower die 14 is fixedly connected to the top of two electric telescopic rods 13, two limit posts 15 are fixedly connected to the top of lower die 14, and the heat dissipation fan 16 is installed on both sides of convex frame 10.

[0023] Further as Figure 1 、 Figure 2 and Figure 3 illustrated, it is worth specifically explained that the feeding cylinder 4 is internally provided with spiral conveying blades fixedly connected with the output end of conveying motor 6, and the spiral design helps to prevent the blocking phenomenon of raw materials during conveying, to maintain continuous and stable feeding.

[0024] Further as Figure 1 、 Figure 2 and Figure 3 illustrated, it is worth specifically explained that the feeding pipe 9 terminal is connected with the inside of upper die 12, to ensure that the molten injection raw materials can smoothly enter the inside of upper die 12 and lower die 14, and complete injection after cooling in the inside of upper die 12 and lower die 14.

[0025] Further as Figure 1 、 Figure 2 and Figure 3 illustrated, it is worth specifically explained that two positioning holes corresponding with limit post 15 are formed in the bottom of upper die 12, to ensure the stability and precision of the die during work, to avoid the possible misplacement or deviation during assembly.

[0026] According to the above working process, it can be known that: by setting heat dissipation fan 16, air cooling is carried out on the upper die 12 and lower die 14 after injection, which can significantly shorten the cooling time of the die, thereby improving the injection cycle, increasing the production efficiency, effectively preventing the deformation of the die, and prolonging the service life of the die.

[0027] Further as Figure 1As shown, worth specifically explained is that the knocking mechanism 7 comprises two baffles 701 fixedly connected to the top of the workbench 1, a first rotating shaft 702 rotatably connected between the two baffles 701, two pipe sleeves 703 fixedly connected to the outer wall of the first rotating shaft 702, two first connecting rods 704 fixedly connected to the top of the two pipe sleeves 703, two knocking heads 705 fixedly connected to the inner side of the two first connecting rods 704, two second connecting rods 706 fixedly connected to the bottom of the two pipe sleeves 703, two fixed blocks 707 fixedly connected to the inner end of the two baffles 701, two springs 708 fixedly connected to the outer wall of the two fixed blocks 707 and corresponding to the second connecting rods 706, a second rotating shaft 709 rotatably connected between the two baffles 701 near the bottom position, two cams 710 fixedly connected to the outer wall of the second rotating shaft 709 and corresponding to the second connecting rods 706, and a servo motor 711 fixedly connected to the rear end of one of the baffles 701.

[0028] Further as shown in Figure 2 Worth specifically explained is that the ends of the two springs 708 are fixedly connected to the inner side of the bottom of the corresponding second connecting rods 706, so that the spring 708 can drive the second connecting rod 706 to reset, thereby driving the first connecting rod 704 to rotate and providing power for the knocking of the knocking head 705.

[0029] Further as shown in Figure 3 Figure 4 Figure 4 Figure 4 Worth specifically explained is that the output end of the servo motor 711 is fixedly connected to the second rotating shaft 709 through the baffle 701, so that the servo motor 711 can drive the second rotating shaft 709 to rotate stably, thereby intermittently knocking the second connecting rod 706.

[0030] The scheme has the following working process: in actual use, the valve plug raw material is poured into the inside of the feeding cylinder 4 from the feeding hopper 5, under the action of the conveying motor 6, the raw material is injected from the feeding cylinder 4 into the feeding pipe 9, the valve plug raw material enters the inside of the upper mold 12 and the lower mold 14 through the feeding pipe 9 to complete the injection molding work, at the same time of the injection molding work, the servo motor 711 is turned on to drive the second rotating shaft 709 to rotate, the second rotating shaft 709 drives the cam 710 to rotate and intermittently knocks the second connecting rod 706, so that the spring 708 is compressed and reset reciprocatingly to drive the first connecting rod 704 to rotate, so that the first connecting rod 704 drives the knocking head 705 to knock and vibrate the feeding cylinder 4, and the bubbles in the hot-melt valve plug raw material are shaken out by vibration and discharged through the exhaust valve 8.

[0031] In summary: by setting the knocking mechanism 7, so that the first connecting rod 704 drive the impact head 705 on the feed cylinder 4 for shock vibration, use vibration will melt valve plug raw material with the bubble out, and through the exhaust valve 8, avoid the valve plug raw material inside into the bubble and cause the valve plug contains cavity, improve the production quality of valve plug; by setting the cooling fan 16, on the injection after the upper die 12 and the lower die 14 for air cooling, can significantly shorten the cooling time of the mold, thereby improving the injection cycle, increase production efficiency, but also can effectively prevent the deformation of the mold, prolong the service life of the mold.

Claims

1. A mould for forming a valve plug for a washing machine drain valve, comprising a worktable (1), characterised in that: The bottom of the workbench (1) is fixedly connected with a plurality of support columns (2), the top of the workbench (1) is fixedly connected with two support plates (3), two support plates (3) are fixedly connected with a feeding cylinder (4), the top of the feeding cylinder (4) is fixedly connected with a feeding hopper (5) near the rear end position, the rear end of the feeding cylinder (4) is provided with a conveying motor (6), the top of the workbench (1) is provided with two beating mechanisms (7) corresponding to the feeding cylinder (4), the top of the feeding cylinder (4) is fixedly connected with an exhaust valve (8) near the front end position, the front end of the feeding cylinder (4) is fixedly connected with a feeding pipe (9), the top of the workbench (1) is fixedly connected with a convex frame (10) near the front end position, the top of the convex frame (10) is fixedly connected with two connecting columns (11) on the lower surface, the bottom of the two connecting columns (11) is fixedly connected with an upper die (12), the top of the workbench (1) is fixedly connected with two electric telescopic rods (13) near the front end position, the top of the two electric telescopic rods (13) is fixedly connected with a lower die (14), the top of the lower die (14) is fixedly connected with two limiting columns (15), and the two sides of the convex frame (10) are provided with cooling fans (16).

2. A molding die for a laundry machine drain valve plug according to claim 1, characterized in that: The inside of the feeding cylinder (4) is provided with a spiral conveying blade fixedly connected with the output end of the conveying motor (6).

3. The molding die for a laundry machine drain valve plug according to claim 1, characterized in that: The beating mechanism (7) comprises two baffles (701) fixedly connected to the top of the workbench (1), a first rotating shaft (702) rotatably connected between the two baffles (701), two pipe sleeves (703) fixedly connected to the outer wall of the first rotating shaft (702), a first connecting rod (704) fixedly connected to the top of each of the two pipe sleeves (703), a striking head (705) fixedly connected to the inner side of each of the two first connecting rods (704), a second connecting rod (706) fixedly connected to the bottom of each of the two pipe sleeves (703), a fixed block (707) fixedly connected to the inner end of each of the two baffles (701), a spring (708) fixedly connected to the outer wall of each of the two fixed blocks (707) and corresponding to the second connecting rod (706), a second rotating shaft (709) rotatably connected between the two baffles (701) near the bottom position, two cams (710) fixedly connected to the outer wall of the second rotating shaft (709) and corresponding to the second connecting rod (706), and a servo motor (711) fixedly connected to the rear end of one of the baffles (701).

4. A molding die for a laundry machine drain valve plug according to claim 3, characterized in that: The ends of the two springs (708) are fixedly connected with the inner sides of the bottoms of the corresponding second connecting rods (706) respectively.

5. The molding die for a laundry machine drain valve plug according to claim 3, characterized in that: The output end of the servo motor (711) penetrates the baffle (701) and is fixedly connected with the second rotating shaft (709).

6. The molding die for a laundry machine drain valve plug according to claim 1, characterized in that: The end of the feeding pipe (9) is in through connection with the inside of the upper die (12).

7. The molding die for a washing machine drain valve plug according to claim 1, characterized by: Two positioning holes are formed in the bottom of the upper die (12) and correspond to the limiting columns (15).

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