Ultrasonic water gap cutting device

Abstract

The utility model provides an ultrasonic water gap cutting device. The ultrasonic water gap cutting device comprises a head cutting unit, a tool unit and an opening unit, wherein the head cutting unit is used for separating an injection molding product from a water gap; the tool unit is used for clamping and positioning the injection molding product; the tool unit comprises a bottom plate, a first carrying plate and a second carrying plate, the bottom plate is arranged on the working platform, the first carrying plate and the second carrying plate are located on the two sides of a discharging hole in the bottom plate respectively, a containing cavity used for clamping and positioning an injection product is jointly formed in the first carrying plate and the second carrying plate, and a through hole is formed in the position, corresponding to the water gap, of the containing cavity. And after the first carrier plate and the second carrier plate are oppositely opened and separated, the water gap falls into the through hole. According to the ultrasonic water gap cutting device, automatic discharging and waste discharging of the water gap can be completed before discharging of the injection molding product, the mechanical unit arranged beside the device only needs to suck and clamp the injection molding product, automatic feeding and discharging can also be completed for the injection molding product with the thin water gap, and manual assistance is not needed.

Description

TECHNICAL FIELD

[0001] The present application relates to a device for removing injection molding sprue of injection molding products, in particular to an ultrasonic sprue cutting device. BACKGROUND

[0002] ‌The working principle of ultrasonic sprue cutting is to separate the sprue from the plastic part by high-frequency vibration energy. When the ultrasonic energy acts on the sprue part, the friction between the plastic molecules increases due to high temperature, which causes stress increase, so that the injection molding product and the runner are broken at the sprue.

[0003] Ultrasonic sprue cutting does not cause any damage to the plastic part, so the ultrasonic sprue cutting device is widely used in the precision injection molding industry. At present, most of the ultrasonic sprue cutting devices adopt manual feeding and discharging mode, and the reason is that after the injection molding product is separated from the sprue, the sprue will still be left in the positioning fixture, and the small size sprue is difficult to be sucked and clamped by the clamping module, resulting in low working efficiency of the ultrasonic sprue cutting device. CONTENT OF THE INVENTION

[0004] Therefore, the purpose of the present application is to provide an ultrasonic sprue cutting device which at least partially solves the problems in the prior art.

[0005] According to the ultrasonic sprue cutting device provided by the present application, it comprises:

[0006] A cutting head unit is used to separate the injection molding product from the sprue, which comprises an ultrasonic cutter assembly and a driving part, and the driving part drives the ultrasonic cutter assembly to lift;

[0007] A tooling unit is used to clamp and position the injection molding product, which comprises a bottom plate, a first carrier plate and a second carrier plate, the bottom plate is arranged on a workbench, the first carrier plate and the second carrier plate are respectively located on both sides of a discharging hole on the bottom plate, a receiving cavity for clamping and positioning the injection molding product is arranged in the first carrier plate and the second carrier plate, a through hole is arranged in the receiving cavity corresponding to the sprue, and the sprue falls into the through hole after the first carrier plate and the second carrier plate are opened and separated;

[0008] An opening unit comprises two groups of opening mechanisms arranged on both sides of the tooling unit respectively; the opening mechanism comprises a hook, a first air cylinder and a second air cylinder, the first air cylinder is fixed on the workbench and is used to drive the hook to move close to or away from the tooling unit, and the second air cylinder is used to drive the hook to lift; a slot hole is arranged in the first carrier plate and the second carrier plate which is matched with the hook.

[0009] The working principle of the above device is:

[0010] After the injection product in the tooling unit is separated from the water gap by the ultrasonic cutter assembly, the first cylinder drives the hook to move above the corresponding carrier plate, the second cylinder drives the hook to insert into the slot hole of the first carrier plate and the second carrier plate to hook them, the first cylinder drives the hook to retreat to separate the first carrier plate from the second carrier plate, the injection product moves with the corresponding carrier plate, and the water gap falls into the through hole and the falling hole to complete automatic discharging.

[0011] The assembly device according to the application has the advantages that by arranging the split tooling unit and the opening unit for controlling the tooling unit, the water gap is automatically discharged after the injection product is separated from the water gap, and the external mechanical unit only needs to discharge the injection product. BRIEF DESCRIPTION OF DRAWINGS

[0012] The exemplary embodiments of the present application will be explained in more detail with reference to the accompanying drawings. In the drawings:

[0013] Figure 1 A schematic view of the ultrasonic water gap cutting device disclosed in Example One;

[0014] Figure 2 A schematic view of the tooling unit and the opening unit disclosed in Example One;

[0015] Figure 3 A schematic view of the ultrasonic water gap cutting device disclosed in Example Two;

[0016] Figure 4 A schematic view of the tooling unit and the opening unit disclosed in Example Three. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application.

[0018] Example One

[0019] Figure 1 An ultrasonic water gap cutting device shown in Example One includes a rack, a cutting head unit 100, a tooling unit 200, and an opening unit 300. The cutting head unit 100 is used to separate the injection product from the water gap, the tooling unit 200 is used to clamp and position the injection product, and the opening unit 300 is used to open the tooling unit 200.

[0020] The rack includes a fixed plate 410, a base 420, and a support column 430. The support column is connected between the fixed plate and the base.

[0021] The cutting-off unit 100 comprises an ultrasonic cutter assembly 110 and a driving part 120, preferably a pneumatic cylinder, which is installed on a fixed plate and used to drive the ultrasonic cutter assembly to move up and down.

[0022] The tooling unit 200 comprises a bottom plate 210, a first carrier plate 220 and a second carrier plate 230, and the bottom plate is arranged on the working platform of the base. The first carrier plate and the second carrier plate are provided with a containing cavity 240 for clamping and positioning the injection-molded product, and the containing cavity is provided with a through hole 250 corresponding to the water gap, and the bottom plate is provided with a blanking hole 260 corresponding to the through hole. After the first carrier plate 220 and the second carrier plate 230 are combined, the injection-molded product is placed in the containing cavity, the water gap is located on the through hole, and the connection between the water gap and the injection-molded product is located in the containing cavity 240. After the cutter assembly cuts off the injection-molded product from the water gap, the water gap will not automatically fall into the through hole 250. The connection between the water gap and the injection-molded product is placed in the containing cavity 240, and the containing cavity 240 can support the connection to prevent the injection-molded product from deforming when it is cut off. The first carrier plate 220 and the second carrier plate 230 are respectively located on both sides of the blanking hole 260 on the bottom plate 210, and after the first carrier plate and the second carrier plate are opened and separated, the water gap automatically enters the through hole. A blowing pipe can be arranged on the working platform, and the pipe opening of the blowing pipe is located above the tooling unit 200 and faces the through hole. After the first carrier plate 220 and the second carrier plate 230 are opened, the blowing pipe blows air to the water gap to help it enter the through hole and the blanking hole. The base 420 is provided with an inclined guide 500 corresponding to the blanking hole 260, and the guide 500 guides the water gap into the waste box below.

[0023] The opening unit 300 comprises two groups of opening mechanisms arranged on both sides of the tooling unit 200. The opening mechanism comprises a hook 310, a first pneumatic cylinder 320 and a second pneumatic cylinder 330. The first pneumatic cylinder is fixed on the working platform, and a mounting plate is arranged on the telescopic rod of the first pneumatic cylinder. The second pneumatic cylinder is fixed on the mounting plate, and the hook 310 is fixedly connected with the telescopic rod of the second pneumatic cylinder. First, the first pneumatic cylinder 320 drives the hook 310 to move towards the tooling unit; then, the second pneumatic cylinder 330 drives the hook 310 to descend so that the hook part of the hook 310 is inserted into the slot hole A of the first carrier plate and the second carrier plate; finally, the first pneumatic cylinder 320 drives the hook 310 to retreat, and the tooling unit is opened in the process of the retreat of the hook. After the injection-molded product in the tooling unit is taken away, the first pneumatic cylinder drives the hook to reset the first carrier plate and the second carrier plate.

[0024] Preferably, the bottom of the first carrier plate 220 and the second carrier plate 230 is provided with a guide block, and the bottom plate 210 is provided with a sliding groove. The guide block is slidingly connected in the sliding groove to guide the displacement of the first carrier plate and the second carrier plate.

[0025] Preferably, the bottom plate 210 is provided with a first stopper 271 on one side of the first carrier plate 220, and the first carrier plate and the first stopper are connected by a first elastic guide rod 281. The second carrier plate 230 is provided with a second stopper 272 on one side, and the second carrier plate and the second stopper are connected by a second elastic guide rod 282. After the injection molded product in the tooling unit is taken away, the second cylinder 330 drives the hook member 310 to move upward, and the first carrier plate is automatically reset under the action of the first elastic guide rod, and the second carrier plate is also automatically reset under the action of the second elastic guide rod.

[0026] Embodiment Two

[0027] This embodiment is based on Embodiment One.

[0028] As shown in Figure 3 , the working platform is provided with two guide rails 600 located on both sides of the blanking hole 260, and the guide direction of the guide rail is perpendicular to the driving direction of the first cylinder in the horizontal plane. The bottom plate of the tooling unit 200 is slidingly connected to the guide rail, and the base located below the working platform is provided with a third cylinder for driving the tooling unit 200 to move along the guide rail. After the nozzle is automatically blanked, the third cylinder drives the tooling unit to move along the guide rail 600 to the feeding position, so as to avoid the interference of the ultrasonic cutter assembly 110, and the mounting position of the ultrasonic cutter assembly can be closer to the tooling unit 200.

[0029] The tooling unit 200 can be closed before the third cylinder acts, that is, the hook member 310 is separated from the slot hole A, or it can still remain open when it reaches the blanking position, or it can be automatically closed during the movement along the guide rail.

[0030] Preferably, the two ends of the slot hole A are open strip slot structures, and during the process that the third cylinder moves the tooling unit 200 from below the cutting head unit 100 to the blanking position, the hook part of the hook member 310 moves along the slot hole A. When the hook member slides out of the slot hole, the tooling unit can be automatically closed. If the tooling unit moves to the blanking position and the hook part is still located in the slot hole, the tooling unit remains open.

[0031] Further preferably, the hook part of the hook member 310 is provided with a roller 311, and the second cylinder 330 drives the hook member to descend so that the roller 311 is inserted into the slot hole A. The setting of the roller can reduce the friction.

[0032] Embodiment Three

[0033] As shown in Figure 4As shown, the work platform is provided with a cover 800 sleeved outside the tooling unit 200 and the opening unit 300, the top of the cover 800 is provided with a first accommodation hole, and the ultrasonic cutter assembly enters the cover 800 from the first accommodation hole. The side of the cover 800 is provided with a second accommodation hole, and the tooling unit 200 enters the cover from the second accommodation hole. The noise of the ultrasonic wave is large during operation, and the transparent cover can reduce noise pollution.

[0034] In summary, the ultrasonic water gap cutting device provided in the embodiment can complete the automatic discharge and waste removal of the water gap before the discharge of the injection molding product, and the mechanical unit arranged beside the device only needs to suck and clamp the injection molding product. For injection molding products with thin water gaps, automatic feeding and discharging can also be completed without manual assistance.

[0035] The above description of the disclosed embodiments enables those skilled in the art to carry out or use the present application. Various modifications to the above-described embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An ultrasonic nozzle cutting device, characterized by, The utility model relates to a cutting head unit (100) for separating injection products from sprues, comprising an ultrasonic cutter assembly (110) and a drive unit (120) for driving the ultrasonic cutter assembly to move up and down. The utility model relates to a tooling unit (200) for clamping and positioning injection products, comprising a base plate (210), a first carrier plate (220) and a second carrier plate (230), wherein the base plate is arranged on a work platform, the first carrier plate and the second carrier plate are respectively arranged on both sides of a blanking hole (260) on the base plate, the first carrier plate (220) and the second carrier plate are jointly provided with a receiving cavity (240) for clamping and positioning injection products, the receiving cavity is provided with a through hole (250) corresponding to the position of the sprue, and the sprue falls into the through hole (250) after the first carrier plate and the second carrier plate are opened and separated. The utility model relates to an opening unit (300) comprising two groups of opening mechanisms arranged on both sides of the tooling unit (200), wherein each opening mechanism comprises a hook (310), a first air cylinder (320) and a second air cylinder (330), the first air cylinder is fixed on the work platform and used for driving the hook to move towards or away from the tooling unit (200), and the second air cylinder is used for driving the hook to move up and down; the first carrier plate and the second carrier plate are provided with a slot (A) matched with the hook (310). The base plate (210) is provided with a first stop block (271) on one side of the first carrier plate (220), and the first carrier plate and the first stop block are connected through a first elastic guide rod (281); and / or, the base plate (210) is provided with a second stop block (272) on one side of the second carrier plate (230), and the second carrier plate and the second stop block are connected through a second elastic guide rod (282).

2. The water-knifing device according to claim 1, characterized in that The bottom of the first carrier plate and the second carrier plate is provided with a guide block, and the base plate is provided with a sliding groove, and the guide block is slidingly connected in the sliding groove.

3. The water-knifing device of claim 2, wherein The work platform is provided with two guide rails (600) respectively arranged on both sides of the blanking hole (260), the guide direction of the guide rail is perpendicular to the driving direction of the first air cylinder (320) in the horizontal plane, the base plate (210) of the tooling unit is slidingly connected on the guide rail (600), and a third air cylinder for driving the tooling unit to move along the guide rail is arranged on a base arranged below the work platform.

4. The water-knifing apparatus of claim 1, wherein The slot (A) is an open strip slot structure, and the hook part of the hook (310) moves along the slot (A) during the process that the third air cylinder moves the tooling unit (200) from below the cutting head unit (100) to a blanking position.

5. The water-knifing device of claim 4, wherein The hook part of the hook (310) is provided with a roller (311), and the second air cylinder drives the hook to descend so that the roller (311) is inserted into the slot (A).

6. The water-knifing device of claim 5, wherein The work platform is provided with a blowing pipe, and the pipe opening of the blowing pipe is arranged above the tooling unit (200) and faces the through hole (250).

7. The water-knifing apparatus of claim 1, wherein ​ 8. The water-knifing apparatus of claim 1, wherein, The working platform is provided with a cover (800) sleeved outside the tooling unit (200) and the opening unit (300), the top of the cover is provided with a first accommodation hole, and the ultrasonic cutter assembly enters the cover from the first accommodation hole.

9. The water-knifing apparatus of claim 4, wherein, The working platform is provided with a cover (800) sleeved outside the tooling unit (200) and the opening unit (300), the side of the cover is provided with a second accommodation hole, and the tooling unit enters the cover from the second accommodation hole.

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