Injection molding machine

Abstract

The utility model relates to an injection molding machine, which comprises a rack and a mold closing unit arranged on the rack, the mold closing unit comprises a mounting seat, a guide rail extending along the length direction of the rack is arranged on the mounting seat, a guide sleeve is sleeved on the guide rail, a mounting gap is arranged between the guide sleeve and the guide rail, a dustproof piece is arranged on the mounting gap, and the dustproof piece is annular. The side, close to the guide rail, of the dustproof piece extends towards the two sides to form a main lip and an auxiliary lip, and the auxiliary lip is arranged on one side of the caulking groove. The dustproof piece is arranged between the guide rail and the guide sleeve, the main lip and the auxiliary lip are arranged on the dustproof piece, the main lip can prevent external pollutants from entering the guide rail, the auxiliary lip can prevent lubricating liquid in the guide rail from leaking out so as to keep the lubricating effect, and under the joint matching action of the main lip and the auxiliary lip, the dustproof piece forms two defense lines, so that the dustproof effect is improved. And the guide rail can effectively block external pollutants.

Description

Technical Field

[0001] This utility model relates to the field of injection molding equipment technology, specifically to an injection molding machine. Background Technology

[0002] Injection molding machines, also known as injection molding machines or injection molding machines, are the main molding equipment used to produce various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molds. They are currently widely used in home appliances, medical devices, electronics, and daily necessities. Injection molding production offers advantages such as high automation, high production precision, and high efficiency. The clamping unit of an injection molding machine contains guide rails, which are crucial components that directly affect the clamping force and injection accuracy. During daily operation, injection molding machines easily generate contaminants such as plastic flash and dust particles. If these contaminants enter the guide rails, they can scratch the guide rail surfaces or even cause jamming. Therefore, dust prevention measures are necessary for the guide rails.

[0003] For example, Chinese utility model patent ZL202022589092.5 (publication number CN215589791U), entitled "A Protective Device for Linear Guide Rails of Injection Molding Machines," discloses a device for preventing dust from entering the guide rails. This device includes a guide rail body with a track at its upper end. A first motor is housed inside the left end of the guide rail body, with a rotating shaft fixedly connected to one end of the motor. A turntable is fixedly connected to the front end of the rotating shaft, and an oil-based dustproof strip is wrapped around the outer surface of the turntable. An iron ball is attached to the end of the dustproof strip, which engages with a groove at the right end of the guide rail body. The dustproof strip ensures the cleanliness of the track by covering its surface. However, the movement of contaminants during the operation of an injection molding machine is irregular. This dustproof strip can only block contaminants moving from top to bottom, while contaminants moving in other directions can still enter the guide rails and affect their operation.

[0004] Therefore, further improvements are needed to the internal structure of the injection molding machine. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an injection molding machine that can effectively block external contaminants from the guide rail, in light of the above-mentioned existing technology.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the injection molding machine includes:

[0007] frame;

[0008] A mold-closing unit is disposed on the frame. The mold-closing unit includes a mounting base, and a guide rail extending along the length direction of the frame is disposed on the mounting base.

[0009] Its characterized in that: the guide rail is sleeved with a guide sleeve, the guide sleeve and the guide rail are provided with an installation gap, the installation gap is provided with a dustproof piece, the dustproof piece is annular, and the dustproof piece is provided with a embedding groove, the side of the dustproof piece close to the guide rail extends to both sides to form a main lip and a secondary lip, and the secondary lip forms a groove wall on one side of the embedding groove.

[0010] In order to improve the sealing, the other side of the embedding groove is provided with a back lip, and the height difference H between the back lip and the secondary lip is 1-2mm. Among them, the height of the back lip is slightly larger than that of the secondary lip, which can further play a protective role, thereby preventing the leakage of internal lubricating oil. When the height difference H between the back lip and the secondary lip is greater than 2mm, the back lip is set too long, which will cause the contact pressure between the back lip and the guide rail to be too large and produce abnormal sound; when the height difference H between the back lip and the secondary lip is less than 1mm, the back lip cannot effectively play a protective role.

[0011] In order to facilitate the supply of lubricating oil, as a preferred, the cavity of the rack is provided with a lubricating pump, the lubricating pump includes an oil tank and an oil supply pump, and the oil supply pump can supply the lubricating oil in the oil tank to the mold closing unit along the oil pipe. Among them, under the action of the oil supply pump, the lubricating oil in the oil tank can be supplied to the mold closing unit along the oil pipe, thereby avoiding the wear of the parts of the mold closing unit.

[0012] In order to facilitate observation and operation, as a preferred, the oil tank is provided with an oil inlet for oil injection and a flow meter for displaying the state of the oil tank. Among them, the operator can read the reading on the flow meter to determine the lubricating oil condition in the oil tank, and once the oil tank is in a state of oil shortage, the operator can open the oil inlet to pour lubricating oil into the oil tank.

[0013] In order to facilitate operation, as a preferred, the rack is covered with a protective cover, the side wall of the protective cover is provided with an openable operation window, and the lubricating pump is arranged on the inner side of the operation window. Among them, the operator can read the reading on the flow meter through the door body, and can make a timely judgment and reaction, and once the oil tank is in a state of oil shortage, the operator can directly inject oil into the lubricating pump through the operation window.

[0014] In order to improve safety, as a preferred, the protective cover is provided with a connecting part, the connecting part is provided with a door body for closing the operation window, and the door body is connected with the protective cover through a locking piece. Among them, during the operation of the injection molding machine, high-temperature molten plastic will splash out from the operation window, and the door body set in the operation window can effectively block the high-temperature splashes, thereby protecting the safety of the operator; secondly, the door body can effectively isolate the operator from the moving parts, thereby avoiding body contact.

[0015] In order to further improve the safety, as preferred, it is characterized in that: the rack is further provided with an electrical control unit, and the front baffle of the rack is provided with a sensor connected with the electrical control unit.

[0016] Compared with the prior art, the utility model has the advantages that: the dustproof piece is arranged in the installation gap between the guide rail and the guide sleeve, the main lip and the auxiliary lip are arranged on the dustproof piece, the main lip can block the external pollutants from entering the guide rail, the auxiliary lip can prevent the lubricating liquid in the guide rail from leaking to maintain the lubricating effect, under the joint action of the main lip and the auxiliary lip, the dustproof piece forms two lines of defense, and the guide rail can effectively block the external pollutants. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a perspective view of the utility model embodiment;

[0018] Figure 2 It is a rear view of the utility model embodiment;

[0019] Figure 3 It is a front view of the utility model embodiment;

[0020] Figure 4 It is a partial sectional view schematic diagram of Figure 2 ;

[0021] Figure 5 It is a longitudinal sectional view schematic diagram of the dustproof piece;

[0022] Figure 6 It is an explosion structure schematic diagram of the utility model embodiment.

[0023] In the drawing: 1, rack; 2, mold closing unit; 21, mounting seat; 22, guide rail; 3, guide sleeve; 4, dustproof piece; 41, embedding groove; 42, main lip; 43, auxiliary lip; 44, back lip; 5, lubricating pump; 51, oil tank; 511, oil inlet; 52, oil supply pump; 53, flowmeter; 6, protective cover; 61, operation window; 7, connecting part; 8, door body; 9, locking piece; 10, electrical control unit; 11, sensor. DETAILED DESCRIPTION

[0024] The utility model will be further described in detail in combination with the drawings.

[0025] As Figures 1 to 6The utility model discloses a kind of injection molding machines, as shown in the best embodiment of the utility model. The injection molding machine includes rack 1, the rack 1 is provided with mold clamping unit 2, mold clamping unit 2 includes mounting seat 21, mounting seat 21 is provided with guide rail 22 extending along the length direction of rack 1, guide rail 22 is provided with guide sleeve 3, guide sleeve 3 is provided with installation gap between guide rail 22, the installation gap is provided with annular dustproof piece 4, wherein dustproof piece 4 is made of high-performance polyurethane material, with higher mechanical strength and tear strength, dustproof piece 4 is provided with embedding groove 41, reference Figure 4 And Figure 5 Dustproof piece 4 extends to form main lip 42 and vice lip 43 respectively on the side close to guide rail 22, vice lip 43 constitutes the groove wall of one side of embedding groove 41, the role of main lip 42 is to prevent external pollutants from entering the inside of guide rail 22, and the role of vice lip 43 is to prevent the leakage of lubricating liquid inside guide rail 22 to maintain lubricating effect, under the joint action of main lip 42 and vice lip 43, dustproof piece 4 forms two lines of defense, effectively blocks external pollutants.

[0026] In addition, the other side of embedding groove 41 is provided with back lip 44, the height difference H of back lip 44 and vice lip 43 is 1-2mm, and the purpose of setting the height difference is to further play a protective role, so as to prevent internal lubricating oil from leaking, when the height difference H of back lip 44 and vice lip 43 is greater than 2mm, at this time, back lip 44 is set too long, which will make the contact pressure between back lip 44 and guide rail 22 too large and produce abnormal sound; when the height difference H of back lip 44 and vice lip 43 is less than 1mm, at this time, it cannot effectively play a protective role, therefore, the preferred height difference in the embodiment is 1.5mm.

[0027] Reference Figure 3 Cavity of rack 1 is provided with lubricating pump 5, lubricating pump 5 includes oil tank 51 and oil supply pump 52, under the action of oil supply pump 52, oil supply pump 52 can supply lubricating oil in oil tank 51 to mold clamping unit 2 along oil pipe, so as to avoid the wear of parts of mold clamping unit 2. Oil tank 51 is also provided with oil inlet 511 for oil injection and flowmeter 53 for displaying the state of oil tank 51, and the operator can read the reading on flowmeter 53, so as to judge the lubricating oil condition in oil tank 51, once the oil tank 51 is in the state of oil shortage, the operator can open oil inlet 511 and pour lubricating oil into oil tank 51.

[0028] The conventional injection molding machine usually sets lubricating pump 5 near mold clamping unit 2, at this time, it is inconvenient to observe the working state of lubricating pump 5, reference Figure 3The embodiment is provided with a protective cover 6 on the rack 1, the side wall of the protective cover 6 is provided with an openable operation window 61, the lubricating pump 5 is arranged on the inner side of the operation window 61, the operator can make a judgment and reaction in time after reading the indication on the flowmeter 53 through the door body 8, once the oil tank 51 is in an oil shortage state, oil can be directly injected into the lubricating pump 5 through the operation window 61. Since the molten plastic will splash from the operation window 61 during the operation of the injection molding machine, in order to improve safety, the embodiment is provided with a connecting part 7 on the protective cover 6, the connecting part 7 is preferably a hinge convenient to install, the connecting part 7 is provided with a door body 8 for closing the operation window 61, the door body 8 is hinged on the connecting part 7, and the door body 8 is connected with the protective cover 6 through a locking part 9, on the one hand, the door body 8 can effectively block the high-temperature splashes, thereby protecting the safety of the operator; on the other hand, the door body 8 can effectively isolate the operator from the moving parts, thereby avoiding body contact.

[0029] Reference Figure 6 The rack 1 is also provided with an electrical control unit 10, the front baffle of the rack 1 is provided with a sensor 11 connected with the electrical control unit 10, the sensor 11 is a photoelectric switch connected with the electrical control unit 10, once it detects the intrusion of the operator, the system will automatically alarm and prevent the injection molding machine from entering the next step.

Claims

1. An injection molding machine, comprising: Rack (1); A mold-closing unit (2) is disposed on the frame (1). The mold-closing unit (2) includes a mounting base (21) and a guide rail (22) extending along the length direction of the frame (1) is disposed on the mounting base (21). Its features are: A guide sleeve (3) is fitted on the guide rail (22). An installation gap is provided between the guide sleeve (3) and the guide rail (22). A dustproof component (4) is provided on the installation gap. The dustproof component (4) is annular and has a groove (41). The dustproof component (4) extends to both sides from the side near the guide rail (22) to form a main lip (42) and a secondary lip (43). The secondary lip (43) forms the groove wall on one side of the groove (41).

2. The injection molding machine according to claim 1, characterized in that: A back lip (44) is provided on the other side of the groove (41), and the height difference H between the back lip (44) and the secondary lip (43) is 1-2 mm.

3. The injection molding machine according to claim 1, characterized in that: A lubrication pump (5) is installed in the cavity of the frame (1). The lubrication pump (5) includes an oil tank (51) and an oil supply pump (52). The oil supply pump (52) can supply the lubricating oil in the oil tank (51) to the mold closing unit (2) along the oil pipe.

4. The injection molding machine according to claim 3, characterized in that: The oil tank (51) is provided with an oil inlet (511) for filling oil and a flow meter (53) for displaying the status of the oil tank (51).

5. The injection molding machine according to claim 4, characterized in that: The frame (1) is covered with a protective cover (6), and the side wall of the protective cover (6) is provided with an openable and closable operating window (61). The lubrication pump (5) is located inside the operating window (61).

6. The injection molding machine according to claim 5, characterized in that: The protective cover (6) is provided with a connecting part (7), and the connecting part (7) is provided with a door (8) for closing the operating window (61). The door (8) is connected to the protective cover (6) by a locking member (9).

7. The injection molding machine according to any one of claims 1 to 6, characterized in that: An electrical control unit (10) is also provided on the frame (1), and a sensor (11) connected to the electrical control unit (10) is provided on the front baffle of the frame (1).

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