Anti-overflow structure of EVA injection molding machine

Abstract

The utility model discloses an anti-overflow structure of an EVA (Ethylene Vinyl Acetate) injection molding machine, which relates to the technical field of EVA injection molding machines and comprises a machine body, an injection molding pipeline is arranged in the machine body, the top of the injection molding pipeline is fixedly connected with a feed port, one end of the injection molding pipeline is fixedly connected with a nozzle, one end of the nozzle is provided with a mold body, and the other end of the nozzle is provided with an anti-overflow device. And an anti-overflow assembly is arranged at the top of the machine body. According to the anti-overflow structure of the EVA injection molding machine, molten plastic can be conveyed into the nozzle through the injection molding pipeline, a motor can be started to drive a first bevel gear to rotate, the first bevel gear can drive a second bevel gear to rotate, and the second bevel gear can drive a screw to rotate, so that the anti-overflow structure of the EVA injection molding machine is convenient to use. Through the arrangement of the threaded sleeve, the screw rod can rotate in the threaded sleeve, the threaded sleeve can push the connecting rod to move, the connecting rod can push the piston to block and seal the nozzle, and therefore when injection molding is stopped, overflow can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to EVA injection molding machine technical field, concretely is a kind of anti-overflow structure of EVA injection molding machine. BACKGROUND

[0002] Injection molding machine is also known as injection molding machine or injection machine.It is the main molding equipment for making various shapes of plastic products by thermoplastic or thermosetting plastic using plastic molding die, divided into vertical, horizontal, all-electric type.Injection molding machine can heat plastic, melt plastic and apply high pressure to make it fill the mold cavity, the role of injection system: injection system is one of the most important components of injection molding machine, generally has plunger type, screw type, screw pre-plastic plunger injection type 3 main forms, the most widely used at present is screw type.Its role is to heat and plasticize a certain amount of plastic in a cycle of injection molding machine, and then inject the molten plastic into the mold cavity at a certain pressure and speed after a certain time.After injection, the molten material injected into the mold cavity is kept in shape.

[0003] The prior art patent document with publication number CN213733230U provides an injection molding machine, which is driven by a motor, so that the structure of the injection molding machine is simpler, there is no noise, and pollution caused by hydraulic oil leakage can be avoided;And the mold opening and closing are driven by ball screws, which can ensure the stability of the mold opening and closing, and reduce the probability of excessive impact between the upper mold and the lower mold of the mold;

[0004] However, the EVA injection molding machine in the prior art does not generally have an anti-overflow structure when in use, the mold is separated during shutdown, and the residual melt in the nozzle drips out due to gravity or rebound pressure, therefore, we need an anti-overflow structure for EVA injection molding machine. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide an anti-overflow structure for EVA injection molding machine to solve the existing problems raised in the background art.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: A kind of material overflow prevention structure of EVA injection molding machine, including body, injection molding pipeline is arranged in the inside of the body, the top of the injection molding pipeline is fixedly connected with feed inlet, one end of the injection molding pipeline is fixedly connected with nozzle, the one end of the nozzle is provided with mold body, the top of the body is provided with material overflow prevention subassembly, the outer wall of the nozzle is provided with material cleaning subassembly;The material overflow prevention subassembly includes gear box, motor is fixedly connected on the side of the gear box, the output end of the motor is connected first bevel gear, the outer wall of the first bevel gear is engagedly connected with second bevel gear, the inside of the second bevel gear is fixedly connected with screw rod, the outer wall of the screw rod is threadedly connected with threaded sleeve, the bottom of the threaded sleeve is fixedly connected with connecting rod, the bottom of the connecting rod is fixedly connected with piston, the top of the nozzle is fixedly connected with mounting sleeve.

[0007] Preferably, the motor is matched with the second bevel gear in size through the first bevel gear, and the first bevel gear and the second bevel gear are arranged perpendicularly.

[0008] Preferably, the second bevel gear is matched with the threaded sleeve in size through the screw rod, and the outer wall of the screw rod is arranged in close contact with the inner wall of the threaded sleeve.

[0009] Preferably, the connecting rod is matched with the nozzle in size through the piston, and the outer wall of the piston is arranged in close contact with the inner wall of the nozzle.

[0010] Preferably, the material cleaning subassembly includes air pump, one end of the air pump is fixedly connected with connecting pipe, one end of the connecting pipe is fixedly connected with first valve, one end of the nozzle is fixedly connected with second valve, the outer wall of the nozzle is fixedly connected with discharge pipe, and the discharge pipe is provided with third valve.

[0011] Preferably, the air pump is matched with the nozzle in structure through the connecting pipe, and the connecting pipe is arranged between the air pump and the nozzle.

[0012] Preferably, the connecting pipe is matched with the discharge pipe in structure through the nozzle, and the nozzle is arranged between the connecting pipe and the discharge pipe.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] (1) through the injection pipeline can be transported to the nozzle melt plastic, and by starting the motor, the motor can be driven first bevel gear rotation, can be driven by the first bevel gear second bevel gear, can be driven by the second bevel gear screw rod, can be driven by the screw rod in the threaded sleeve rotation, can be driven by the threaded sleeve connecting rod movement, can be driven by the connecting rod piston nozzle plugging seal, in turn, when stopping injection, can reduce the flow of overflow;

[0015] (2) when the need to replace the mold, can be closed at the same time the second valve, start the air pump at the same time, the air pump can be relied on connecting pipe nozzle to exert pressure, and can be driven by the nozzle material rely on discharge pipe discharge, meet people's daily use needs. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the main body structure schematic diagram of the utility model;

[0017] Figure 2 is the nozzle and the second valve structure schematic diagram of the utility model;

[0018] Figure 3 is the anti-overflow material assembly structure schematic diagram of the utility model;

[0019] Figure 4 is the clear material assembly structure schematic diagram of the utility model.

[0020] In the drawing: 1, machine body; 2, injection pipeline; 3, feed inlet; 4, nozzle; 5, mold body; 6, anti-overflow material assembly; 601, gear box; 602, motor; 603, first bevel gear; 604, second bevel gear; 605, screw rod; 606, threaded sleeve; 607, connecting rod; 608, piston; 7, clear material assembly; 701, air pump; 702, connecting pipe; 703, first valve; 704, second valve; 705, discharge pipe; 706, third valve. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0022] The utility model embodiment provides a kind of anti-overflow material structure of EVA injection molding machine, as Figure 1 、 Figure 2 、 Figure 3 And Figure 4The utility model discloses a plastic injection machine, including the body 1, the inside of body 1 is provided with injection channel 2, the top of injection channel 2 is fixedly connected with the feed inlet 3, one end of injection channel 2 is fixedly connected with the nozzle 4, and the one end of nozzle 4 is provided with the mould body 5, and the top of body 1 is provided with the anti -overflow material subassembly 6, and the outer wall of nozzle 4 is provided with the clear material subassembly 7, the anti -overflow material subassembly 6 includes gear box 601, and one side of gear box 601 is fixedly connected with motor 602, and the output of motor 602 is connected first bevel gear 603, and the outer wall of first bevel gear 603 is engaged with second bevel gear 604, and motor 602 passes through first bevel gear 603 and second bevel gear 604 and forms rotating structure, and the outer diameter size of first bevel gear 603 is matched with the outer diameter size of second bevel gear 604, and first bevel gear 603 and second bevel gear 604 are vertically arranged, strengthen the connection effect of motor 602 and first bevel gear 603, can make motor 602 can drive first bevel gear 603 to drive second bevel gear 604 to rotate, the inside of second bevel gear 604 is fixedly connected with screw rod 605, and the outer wall of screw rod 605 is threadedly connected with threaded sleeve 606, and second bevel gear 604 passes through screw rod 605 and threaded sleeve 606 and forms screw structure, and the outer diameter size of screw rod 605 is matched with the inner diameter size of threaded sleeve 606, and the outer wall of screw rod 605 is attached with the inner wall of threaded sleeve 606 and is arranged, strengthens the connection effect of second bevel gear 604 and screw rod 605, can make second bevel gear 604 can drive screw rod 605 to rotate in threaded sleeve 606, the bottom of threaded sleeve 606 is fixedly connected with connecting rod 607, and the bottom of connecting rod 607 is fixedly connected with piston 608, and the top of nozzle 4 is fixedly connected with mounting sleeve 609, and connecting rod 607 passes through piston 608 and nozzle 4 and forms movable structure, and the outer diameter size of piston 608 is matched with the outer diameter size of nozzle 4, and the outer wall of piston 608 is attached with the inner wall of nozzle 4 and is arranged, strengthens the connection effect of connecting rod 607 and piston 608, can make connecting rod 607 can push piston 608 and move in nozzle 4, through injection channel 2 can melt the plastic delivery to nozzle 4, and by starting motor 602, can make motor 602 can drive first bevel gear 603 to rotate, can make first bevel gear 603 can drive second bevel gear 604 to rotate, can make second bevel gear 604 can drive screw rod 605 to rotate, can make screw rod 605 can rotate in threaded sleeve 606, can make threaded sleeve 606 can push connecting rod 607 and move, can make connecting rod 607 can push piston 608 and block seal nozzle 4, and then when stopping injection molding, can reduce the outflow of overflow.

[0023] In the further preferred embodiment of the utility model, Figure 1 、 Figure 2 、 Figure 3 andFigure 4 The material cleaning assembly 7 comprises an air pump 701, one end of the air pump 701 is fixedly connected with a connecting pipe 702, the air pump 701 forms a fixed structure with the nozzle 4 through the connecting pipe 702, and the connecting pipe 702 is arranged between the air pump 701 and the nozzle 4, thereby enhancing the connecting effect of the air pump 701 and the connecting pipe 702, so that the air pump 701 can exert pressure on the nozzle 4 through the connecting pipe 702, one end of the connecting pipe 702 is fixedly connected with a first valve 703, one end of the nozzle 4 is fixedly connected with a second valve 704, the outer wall of the nozzle 4 is fixedly connected with a material discharging pipe 705, the material discharging pipe 705 is provided with a third valve 706, the connecting pipe 702 forms a fixed structure with the material discharging pipe 705 through the nozzle 4, and the nozzle 4 is arranged between the connecting pipe 702 and the material discharging pipe 705, thereby enhancing the connecting effect of the connecting pipe 702 and the nozzle 4, so that the remaining material in the nozzle 4 can be discharged through the material discharging pipe 705, and when the mold needs to be replaced, the second valve 704 can be closed at the same time, and the air pump 701 can be started at the same time, so that the air pump 701 can exert pressure on the nozzle 4 through the connecting pipe 702, and the material in the nozzle 4 can be discharged through the material discharging pipe 705, thereby meeting the daily use needs of people.

[0024] Working principle: through the injection molding pipeline 2, the melted plastic can be delivered into the nozzle 4, and through the starting of the motor 602, the motor 602 can drive the first bevel gear 603 to rotate, the first bevel gear 603 can drive the second bevel gear 604 to rotate, the second bevel gear 604 can drive the screw rod 605 to rotate, the screw rod 605 can rotate in the threaded sleeve 606, the threaded sleeve 606 can push the connecting rod 607 to move, the connecting rod 607 can push the piston 608 to block and seal the nozzle 4, thereby reducing the outflow of overflow when stopping injection molding, and when the mold needs to be replaced, the second valve 704 can be closed at the same time, and the air pump 701 can be started at the same time, so that the air pump 701 can exert pressure on the nozzle 4 through the connecting pipe 702, and the material in the nozzle 4 can be discharged through the material discharging pipe 705, thereby meeting the daily use needs of people.

[0025] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An anti-overflow structure of an EVA injection molding machine, comprising a machine body (1), characterized in that: The inside of the machine body (1) is provided with an injection pipe (2), the top of the injection pipe (2) is fixedly connected with a feeding port (3), one end of the injection pipe (2) is fixedly connected with a nozzle (4), one end of the nozzle (4) is provided with a mold body (5), the top of the machine body (1) is provided with an anti-overflow assembly (6), the outer wall of the nozzle (4) is provided with a material cleaning assembly (7). The anti-overflow assembly (6) comprises a gear box (601), one side of the gear box (601) is fixedly connected with a motor (602), the output end of the motor (602) is connected with a first bevel gear (603), the outer wall of the first bevel gear (603) is engagedly connected with a second bevel gear (604), the inside of the second bevel gear (604) is fixedly connected with a screw rod (605), the outer wall of the screw rod (605) is threadedly connected with a threaded sleeve (606), the bottom of the threaded sleeve (606) is fixedly connected with a connecting rod (607), the bottom of the connecting rod (607) is fixedly connected with a piston (608), the top of the nozzle (4) is fixedly connected with a mounting sleeve (609).

2. The material overflow preventing structure of an EVA injection molding machine according to claim 1, wherein: The motor (602) is rotatably connected with the second bevel gear (604) through the first bevel gear (603), and the outer diameter of the first bevel gear (603) is matched with the outer diameter of the second bevel gear (604), and the first bevel gear (603) is arranged perpendicularly to the second bevel gear (604).

3. The material overflow preventing structure of an EVA injection molding machine according to claim 1, wherein: The second bevel gear (604) is threadedly connected with the threaded sleeve (606) through the screw rod (605), and the outer diameter of the screw rod (605) is matched with the inner diameter of the threaded sleeve (606), and the outer wall of the screw rod (605) is arranged in abutment with the inner wall of the threaded sleeve (606).

4. The material overflow preventing structure of an EVA injection molding machine according to claim 1, wherein: The connecting rod (607) is movably connected with the nozzle (4) through the piston (608), and the outer diameter of the piston (608) is matched with the outer diameter of the nozzle (4), and the outer wall of the piston (608) is arranged in abutment with the inner wall of the nozzle (4).

5. The material overflow preventing structure of an EVA injection molding machine according to claim 1, wherein: The material cleaning assembly (7) comprises an air pump (701), one end of the air pump (701) is fixedly connected with a connecting pipe (702), one end of the connecting pipe (702) is fixedly connected with a first valve (703), one end of the nozzle (4) is fixedly connected with a second valve (704), the outer wall of the nozzle (4) is fixedly connected with a material discharging pipe (705), and the material discharging pipe (705) is provided with a third valve (706).

6. The material overflow preventing structure of an EVA injection molding machine according to claim 5, wherein: The air pump (701) is fixedly connected with the nozzle (4) through the connecting pipe (702), and the connecting pipe (702) is arranged between the air pump (701) and the nozzle (4).

7. The material overflow preventing structure of an EVA injection molding machine according to claim 5, wherein: The connecting pipe (702) is fixedly connected with the material discharging pipe (705) through the nozzle (4), and the nozzle (4) is arranged between the connecting pipe (702) and the material discharging pipe (705).

Images