Automatic lubricating device for transmission mechanism of injection molding machine

Abstract

The utility model provides an automatic lubricating device for a transmission mechanism of an injection molding machine, which comprises an equipment main body, the transmission mechanism used for driving mold closing is arranged in the equipment main body, the transmission mechanism comprises a driving gear, and a plurality of screw rod mechanisms used for driving mold closing are uniformly distributed on the periphery of the driving gear. A driven gear meshed with the driving gear is installed on the periphery of a lead screw nut of the lead screw mechanism, a rotating shaft is fixedly connected into the equipment body, the driving gear is rotationally connected to the rotating shaft, and a driving gear lubricating device is installed on the equipment body. The driving gear is reasonable in design, the problems that the front end face, the rear end face and the rotating inner ring face connected with the main shaft in a sleeved mode are prone to being burnt out due to overheating, maintenance is difficult, and replacement cost is high due to the fact that the driving gear rotates on the main shaft of equipment at a high speed for a long time are solved, and specialized injection molding production is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of automatic lubricating device of injection molding machine transmission mechanism. BACKGROUND

[0002] Injection molding is also called injection molding, which is a kind of injection molding method. The advantages of injection molding method are fast production speed, high efficiency, automatic operation, various colors and shapes, from simple to complex shape, from large to small size, accurate product size, easy to update product, complex shape parts can be formed, injection molding is suitable for mass production and complex shape product forming processing field.

[0003] The existing large workpiece injection molding machine generally uses a screw rod to realize mold closing and then injection molding. The existing screw rod driving mechanism generally uses a driving gear to drive multiple screw rod nuts to rotate, and then the screw rod body slides forward and backward to realize the driving of the equipment. However, the front and rear end faces of the driving gear and the rotating inner ring surface of the main shaft sleeve are prone to burnout due to overheating, which is difficult to maintain and has high replacement cost. INVENTION CONTENTS

[0004] Therefore, the utility model aims at overcoming the shortcomings of the prior art and providing an automatic lubricating device for injection molding machine transmission mechanism to solve the problem of burnout due to overheating of the front and rear end faces of the driving gear and the rotating inner ring surface of the main shaft sleeve, which is difficult to maintain and has high replacement cost.

[0005] The utility model adopts the following scheme: an automatic lubricating device for injection molding machine transmission mechanism includes a device main body, a transmission mechanism for driving mold closing is installed in the device main body, the transmission mechanism includes a driving gear, a plurality of screw rod mechanisms for driving mold closing are circumferentially distributed on the outer periphery of the driving gear, a driven gear meshing with the driving gear is installed on the outer periphery of the screw rod nut of the screw rod mechanism, a rotating shaft is fixedly connected in the device main body, the driving gear is rotatably connected to the rotating shaft, and a driving gear lubricating device is installed on the device main body.

[0006] Further, the driving gear is sleeved on the end portion of the rotating shaft, an end cover for limiting the driving gear from coming out is installed on the end portion of the rotating shaft, and the inner wall surface of the device main body, the rotating shaft, and the end cover jointly form an annular groove for accommodating the gear.

[0007] Further, the driving gear lubricating device includes an oil tank filled with lubricating oil, the output end of the oil tank is connected with a flow divider through a pipeline with a delivery pump, the flow divider has at least two output ends, and the output ends of the flow divider respectively spray oil to the inner wall surface of the driving gear and the external gear.

[0008] Further, at least one axial input hole is formed on the end of the rotating shaft away from the end cover, and a radial output hole is formed on the bottom of the ring groove and communicates with the axial input hole.

[0009] Further, the input end of the axial input hole is connected with the output end of a flow divider through a pipeline.

[0010] Further, a plurality of output grooves are circumferentially and axially arranged on the inner wall of the driving gear, and the two ends of the output grooves penetrate the inner edge of the end surface of the driving gear.

[0011] Further, at least one oil pipe nozzle is arranged above the driving gear on the inner wall of the equipment body, and the input end of the oil pipe nozzle is connected with the output end of a flow divider through a pipeline.

[0012] Further, a motor gear is engaged on the outer periphery of the driving gear, and a motor is installed in the equipment body to drive the motor gear to rotate.

[0013] Further, a driving gear mounting groove is formed on the equipment body for accommodating the driving gear, the rotating shaft is mounted in the middle of the driving gear mounting groove, a driven gear mounting groove is formed on the equipment body on the side of the driving gear, and each driven gear mounting groove is in communication with the edge of the driving gear and the driving gear mounting groove.

[0014] Further, the screw rod mechanism comprises a screw rod and a matched screw nut, a screw nut mounting groove is formed in the middle of the driven gear mounting groove on the equipment body, the screw nut is rotationally connected in the screw nut mounting groove, a sliding channel is formed in the middle of the screw nut mounting groove for the sliding of the screw rod, a flange plate is mounted on one end of the screw nut mounting groove where the screw nut is located, the flange plate is fixedly connected with the driven gear, and a through hole is formed in the end surface of the driven gear for the screw nut to pass through.

[0015] Compared with the prior art, the present application has the following advantages: the design is reasonable, the problems of easy burning and difficult maintenance of the front and rear end surfaces of the driving gear and the rotating inner ring surface of the main shaft sleeve due to overheating caused by long-term high-speed rotation of the driving gear on the equipment main shaft are solved, and the replacement cost is high, and the professional injection molding production is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of an embodiment of the present application;

[0017] Figure 2 It is a structure schematic view of an embodiment of the present application (remove the end cover);

[0018] Figure 3 As Figure 1 A-A cross-sectional structure schematic view in the middle;

[0019] Figure 4 As an embodiment of the utility model active gear lubricating device structure schematic view;

[0020] Figure 5 As Figure 1 B-B cross-sectional structure schematic view in the middle.

[0021] In the figure: 1 - equipment main part; 2 - transmission mechanism; 3 - driving gear; 4 - screw mechanism; 5 - screw nut; 6 - driven gear; 7 - rotating shaft; 8 - active gear lubricating device; 9 - end cover; 10 - annular groove; 11 - annular shoulder; 12 - oil tank; 13 - delivery pump; 14 - flow divider; 15 - switch valve; 16 - axial input hole; 17 - radial output hole; 18 - output channel; 19 - oil pipe nozzle; 20 - motor gear; 21 - motor; 22 - driving gear installation groove; 23 - driven gear installation groove; 24 - motor installation groove; 25 - screw rod; 26 - screw nut installation groove; 27 - sliding channel; 28 - flange plate. DETAILED DESCRIPTION

[0022] The utility model will be further explained in connection with the drawings and examples.

[0023] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0024] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form, and in addition, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0025] As Figures 1-5The utility model discloses an injection molding machine transmission mechanism automatic lubricating device, including equipment main body 1, the transmission mechanism 2 for driving clamp is installed in the equipment main body, the transmission mechanism includes driving gear 3, the driving gear is distributed several screw rod mechanism 4 for driving clamp on the circumference, the screw rod nut 5 of screw rod mechanism is installed on the circumference and is engaged with driving gear driven gear 6, the rotating shaft 7 is fixedly connected in the equipment main body, that is, the rotating shaft is fixed in the equipment main body, and the rotating shaft does not rotate, and the driving gear is rotatably connected on the rotating shaft, and the driving gear is sleeved on the rotating shaft, and the driving gear lubricating device 8 is installed on the equipment main body, when using, the front and rear end face, the inner ring surface, the outer tooth surface of driving gear are lubricated through driving gear lubricating device, solve the problem of difficult maintenance due to overheat and burnout caused by long time high speed rotation.

[0026] In the embodiment, in order to realize the installation of the driving gear, the driving gear is sleeved on the end of the rotating shaft, the end of the rotating shaft is provided with an end cover 9 for limiting the driving gear from falling out, the end cover can be fixed on the end of the rotating shaft by screwing or other existing methods, the inner wall surface of the equipment main body, the rotating shaft and the end cover jointly form a ring groove 10 for accommodating the gear, of course, the rotating shaft can also be provided with an annular shoulder 11 on the outer periphery, and the annular shoulder, the outer periphery of the rotating shaft and the end cover jointly form a ring groove for accommodating the gear.

[0027] In the embodiment, in order to realize the lubrication, the specific structure of the driving gear lubricating device is that: the driving gear lubricating device includes an oil tank 12 filled with lubricating oil, the output end of the oil tank is connected with an existing flow divider 14 through a pipeline provided with a delivery pump 13, the flow divider can be a multi-way pipe provided with a plurality of switch valves 15, the flow divider has at least two output ends, the output ends of the flow divider respectively spray oil on the inner wall surface of the driving gear and the outer gear, and the output ends of the flow divider respectively spray oil on the inner wall surface of the driving gear and the outer gear, so as to lubricate the inner ring surface and the outer tooth surface of the driving gear.

[0028] In the embodiment, further, in order to realize the lubrication of the inner ring surface of the driving gear, at least one axial input hole 16 is formed on the end of the rotating shaft away from the end cover, a radial output hole 17 is formed on the groove bottom of the ring groove and communicates with the axial input hole, the input end of the axial input hole is connected with the output end of one of the flow dividers through a pipeline, so that the lubricating oil can be input from the axial input hole and input to the inner ring surface of the driving gear and the groove bottom of the ring groove through the radial output hole, so that the inner ring surface of the driving gear is in contact with the lubricating oil during rotation, and the lubrication of the inner ring surface is realized.

[0029] In the embodiment, further, in order to realize the lubrication of the two end faces of the driving gear, a plurality of output grooves 18 are circumferentially and axially arranged on the inner wall surface of the driving gear, both ends of the output grooves penetrating the inner edge of the end face of the driving gear, so that when the lubricating oil is input between the inner wall surface of the driving gear and the bottom of the ring groove through the radial output hole, the output grooves will be in communication with the radial output hole due to the rotation of the driving gear, so that the lubricating oil is output to both sides of the driving gear through the output grooves and enters between the two end faces of the driving gear and the corresponding ring groove wall, realizing the lubrication of the two end faces of the driving gear.

[0030] In the embodiment, in order to realize the lubrication of the outer tooth surface of the driving gear, at least one oil pipe nozzle 19 is arranged above the driving gear on the inner wall of the device body, the input end of the oil pipe nozzle being connected with the output end of a branch of the pipeline, so that the lubricating oil is dripped onto the outer tooth surface of the driving gear through the oil pipe nozzle, realizing the lubrication of the outer tooth surface of the driving gear.

[0031] In the embodiment, in order to realize the rotation of the driving gear, a motor gear 20 is engaged with the outer periphery of the driving gear, and a motor 21 is installed in the device body to drive the rotation of the motor gear, so that the rotation of the driving gear is driven by the motor through the motor gear, realizing the driving of the overall mechanism.

[0032] In the embodiment, in order to facilitate the installation of the driving gear and the driven gear, a driving gear installation groove 22 is formed in the device body to accommodate the driving gear, the rotating shaft being installed in the middle of the driving gear installation groove, a driven gear installation groove 23 is formed in the device body on the side of the driving gear to accommodate the driven gear, each driven gear installation groove being in communication with the edge of the driving gear and the driving gear installation groove, and a motor installation groove 24 is formed in the device body corresponding to the motor and the motor gear, and a front cover plate is installed on the device body to prevent the driven gear from being separated from the driven gear installation groove, and a clearance groove is arranged on the front cover plate corresponding to the lead screw. Since this is prior art, no further description is given.

[0033] In the embodiment, in order to realize the installation of the lead screw, the structure of the lead screw adopted by the application is as follows: the lead screw mechanism comprises a lead screw 25 and a matched lead screw nut, a lead screw nut mounting groove 26 is formed in the middle of the driven gear mounting groove of the equipment main body, the lead screw nut is rotationally connected in the lead screw nut mounting groove, a sliding channel 27 for the sliding of the lead screw is formed in the middle of the lead screw nut mounting groove, a flange plate 28 is mounted on one end of the lead screw nut mounting groove, the flange plate is fixedly connected with the driven gear, a through hole for the lead screw nut to pass through is formed in the end face of the driven gear, in use, the driven gear is rotated by the rotation of the driving gear, and then the lead screw nut is rotated, and finally the forward and backward sliding of the lead screw is realized, the front ends of the lead screws are jointly connected with a sliding plate for mounting a mold, since this is prior art, no more description is made.

[0034] If the numerical range is disclosed in any of the technical solutions of the utility model, the disclosed numerical range is a preferred numerical range, and any person skilled in the art should understand that the preferred numerical range is only one of the many implementable values with more obvious technical effects or representative values. Since there are many values, it is impossible to enumerate all, therefore, the utility model discloses only part of the values to illustrate the technical solutions of the utility model, and the enumerated values should not be regarded as the limitation of the protection scope of the utility model.

[0035] If the terms such as "first", "second" are used to limit the components in the text, the person skilled in the art should know that: the use of "first", "second" is only for the convenience of distinguishing the components, and the above terms have no special meaning unless otherwise stated.

[0036] If the utility model discloses or involves the components or structural members fixedly connected with each other, unless otherwise stated, the fixed connection can be understood as: detachable fixed connection (for example, bolt or screw connection), and can also be understood as: non-detachable fixed connection (for example, riveting, welding), of course, the fixed connection can also be replaced by an integral structure (for example, integrally formed by using casting process) (obviously, the integral forming process cannot be used).

[0037] In addition, the position relationship indicated by the terms such as "vertical", "horizontal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like in any of the technical solutions of the utility model disclosed above is the position relationship shown in the drawings, which is only for the convenience of describing the patent and does not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the patent, and the terms used to indicate the shape in any of the technical solutions of the utility model disclosed above include shapes similar, similar or close to the shape unless otherwise stated.

[0038] Any component provided by the utility model can be assembled from a plurality of separate components, or can be a separate component manufactured by an integral forming process.

[0039] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model and not to limit them; although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the specific embodiments of the utility model can still be modified or some technical features can be replaced by equivalents; without departing from the spirit of the technical solutions of the utility model, they should all be included in the technical solutions of the utility model claimed in the utility model.

Claims

1. An automatic lubrication device for the transmission mechanism of an injection molding machine, characterized in that: The device includes a main body, within which a transmission mechanism for driving mold closing is installed. The transmission mechanism includes a drive gear, and several lead screw mechanisms for driving mold closing are evenly distributed around the outer circumference of the drive gear. A driven gear that meshes with the drive gear is installed on the outer circumference of the lead screw nut of the lead screw mechanism. A rotating shaft is fixedly connected inside the main body, and the drive gear is rotatably connected to the rotating shaft. A lubrication device for the drive gear is installed on the main body.

2. The automatic lubrication device according to claim 1, characterized in that; The drive gear is sleeved on the end of the rotating shaft, and an end cover for preventing the drive gear from disengaging is installed on the end of the rotating shaft. The inner wall of the main body of the equipment, the rotating shaft, and the end cover together form an annular groove for accommodating the gear.

3. The automatic lubrication device according to claim 2, characterized in that; The drive gear lubrication device includes an oil tank containing lubricating oil. The output end of the oil tank is connected to a distributor via a pipeline with a delivery pump. The distributor has at least two output ends, which spray oil onto the inner wall surface of the drive gear and the outer gear, respectively.

4. The automatic lubrication device according to claim 3, characterized in that; At least one axial input hole is provided on the end of the rotating shaft away from the end cover, and a radial output hole communicating with the axial input hole is provided on the bottom of the annular groove.

5. The automatic lubrication device according to claim 4, characterized in that; The input end of the axial input hole is connected to the output end of one of its splitters via a pipeline.

6. The automatic lubrication device according to claim 4, characterized in that; The inner wall of the drive gear has several output channels evenly distributed around its circumference and arranged along the axial direction. Both ends of the output channels penetrate the inner edge of the end face of the drive gear.

7. The automatic lubrication device according to claim 3, characterized in that; At least one oil nozzle is provided on the inner wall of the main body of the equipment above the drive gear, and the input end of the oil nozzle is connected to the output end of a distributor via a pipeline.

8. The automatic lubrication device according to claim 1, characterized in that; A motor gear meshes with the outer periphery of the drive gear, and a motor is installed inside the main body of the device to drive the motor gear to rotate.

9. The automatic lubrication device according to claim 1, characterized in that; The main body of the device has a drive gear mounting groove for accommodating the drive gear. The rotating shaft is installed in the middle of the drive gear mounting groove. The main body of the device has a driven gear mounting groove for accommodating the driven gear on the periphery of the drive gear. Each driven gear mounting groove is connected to the edge of the corresponding drive gear and the drive gear mounting groove.

10. The automatic lubrication device according to claim 2, characterized in that; The lead screw mechanism includes a lead screw and a matching lead screw nut. The main body of the equipment has a lead screw nut mounting groove in the middle of the driven gear mounting groove. The lead screw nut is rotatably connected in the lead screw nut mounting groove. A sliding channel for the lead screw to slide is provided in the middle of the lead screw nut mounting groove. A flange is installed on one end of the lead screw nut located at the opening of the lead screw nut mounting groove. The flange is fixedly connected to the driven gear. A through hole for the lead screw nut to pass through is provided on the end face of the driven gear.

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