CN215434867U - Hollow shaft hydraulic motor for injection molding machine - Google Patents
Hollow shaft hydraulic motor for injection molding machine Download PDFInfo
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- CN215434867U CN215434867U CN202121328617.8U CN202121328617U CN215434867U CN 215434867 U CN215434867 U CN 215434867U CN 202121328617 U CN202121328617 U CN 202121328617U CN 215434867 U CN215434867 U CN 215434867U
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- injection molding
- molding machine
- hydraulic motor
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Abstract
The utility model relates to the technical field of injection molding machines, and discloses a hollow shaft hydraulic motor for an injection molding machine, which is used for driving a screw of the injection molding machine, and comprises: the side wall of the shell is arranged in a cylinder shape; the spindle is rotatably arranged in the shell, the spindle is provided with connecting holes penetrating through two end faces of the spindle, the center line of the connecting holes and the center line of the shell are positioned on the same straight line, and one end of the screw rod is movably clamped in the connecting holes; the utility model has the advantages that the arrangement of the connecting hole simplifies the structure of the motor, saves the production cost, and one end of the screw rod can be movably clamped in the connecting hole to rotate along with the main shaft without adjusting the concentricity of the main shaft and the screw rod, thereby simplifying the installation process.
Description
Technical Field
The utility model relates to the technical field of injection molding machines, in particular to a hollow shaft hydraulic motor for an injection molding machine.
Background
An injection molding machine, also known as an injection molding machine or an injection molding machine, is a main molding device for molding thermoplastic plastics or thermosetting plastics into plastic products of various shapes by using a plastic molding mold. The injection system of an injection molding machine generally has three main forms of plunger type, screw type and screw preplasticizing plunger injection type, the most widely used at present is the screw type, and the injection system has the function of injecting molten plastic into a mold cavity through a screw at a certain pressure and speed after a certain amount of plastic is heated and plasticized within a specified time in one cycle of an injection molding machine. The rotation of screw rod is mainly driven by the motor, is equipped with an output shaft on the current motor usually, adopts the shaft coupling to connect between output shaft and the screw rod, wherein, when connecting output shaft and screw rod, need adjust the concentricity of output shaft and screw rod, guarantees the reliability of motion transmission, and the installation is comparatively complicated to need to adopt shaft coupling connection motor and screw rod, increased manufacturing cost.
Disclosure of Invention
The present invention has been made in view of the foregoing problems, and it is an object of the present invention to provide a hollow shaft hydraulic motor for an injection molding machine, which can reduce production costs and simplify the installation process.
To achieve the above object, the present invention provides a hollow shaft hydraulic motor for an injection molding machine, the hollow shaft hydraulic motor for driving a screw of the injection molding machine, comprising:
the side wall of the shell is arranged in a cylindrical shape;
the spindle is rotatably arranged in the shell, connecting holes penetrating through two end faces of the spindle are formed in the spindle, the center line of each connecting hole and the center line of the shell are located on the same straight line, and one end of the screw rod is movably clamped in the connecting hole;
the driving piece is arranged on the shell and used for driving the main shaft to rotate.
According to the hollow shaft hydraulic motor for the injection molding machine, the main shaft comprises the first rotating shaft, and the second rotating shaft and the third rotating shaft which are respectively arranged at the two ends of the main shaft, and the connecting hole penetrates through the first rotating shaft, the second rotating shaft and the third rotating shaft; the central axes of the second rotating shaft and the third rotating shaft are positioned on the same straight line and are distributed in a staggered manner with the central axis of the first rotating shaft.
According to the hollow shaft hydraulic motor for the injection molding machine, the two ends of the shell are respectively provided with the gland, the shell is internally provided with the bearing, the second rotating shaft and the third rotating shaft are respectively connected with one bearing, the gland is provided with the through hole, and the through hole is communicated with the connecting hole.
According to the hollow shaft hydraulic motor for the injection molding machine, the central line of the connecting hole and the central axis of the second rotating shaft are positioned on the same straight line.
According to the hollow shaft hydraulic motor for the injection molding machine, the connecting hole is internally provided with the first limiting part, the screw is provided with the second limiting part, and the first limiting part is connected with the second limiting part.
According to the hollow shaft hydraulic motor for the injection molding machine, the first limiting part is arranged to be the guide groove, the second limiting part is arranged to be the limiting bulge, and the limiting bulge is movably clamped in the guide groove.
According to the hollow shaft hydraulic motor for the injection molding machine, the driving part comprises a plurality of plunger cylinders which are distributed on the side wall of the shell at equal intervals, and one end of each plunger cylinder is arranged in the shell and can be abutted against the side wall of the first rotating shaft.
According to the hollow shaft hydraulic motor for the injection molding machine, the outer side of the first rotating shaft is provided with the outer sleeve, and the bottom of the plunger cylinder is provided with the pressing rod and the pressing plate; the pressure plate is arranged in the shell and can be abutted against the outer sleeve; one end of the pressure rod is connected with the plunger cylinder, and the other end of the pressure rod is connected with the pressure plate.
According to the hollow shaft hydraulic motor for the injection molding machine, the driving piece further comprises an oil supply cover, an oil distribution disc and a connecting shaft, wherein the oil supply cover is arranged on the outer side of the shell; the oil distribution disc is arranged on the inner side of the oil supply cover and used for supplying oil to the plunger type cylinder, and the connecting shaft is used for driving the oil distribution disc to rotate.
The utility model has the following beneficial effects:
1. the main shaft is provided with connecting holes penetrating through two end faces of the main shaft, one end of the screw rod can be movably clamped in the connecting holes and can rotate along with the main shaft, the production cost is saved due to the arrangement of the connecting holes, and the installation process is simplified;
2. the central axes of the second rotating shaft and the third rotating shaft are positioned on the same straight line and are distributed in a staggered manner with the central axis of the first rotating shaft to form a cam mechanism, and the cam mechanism has the characteristics of compact structure and high reliability, can obtain stable motion and can improve the rotation stability of the screw;
3. the bearing is arranged in the shell, the second rotating shaft and the third rotating shaft are both connected with one bearing, and the bearings are adopted to support the second rotating shaft and the third rotating shaft, so that the friction coefficient in the movement process can be reduced, and the rotation precision of the second rotating shaft and the third rotating shaft can be ensured;
4. a guide groove is arranged in the connecting hole, a limiting bulge is arranged on the screw rod, and the limiting bulge can be movably clamped in the guide groove, so that the relative rotation between the screw rod and the main shaft can be limited, and the screw rod can be ensured to rotate along with the main shaft;
5. the hollow shaft hydraulic motor is a radial plunger motor and has the advantages of simple structure, small volume, light weight, reliable work, long service life, low noise and the like.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is another schematic view of FIG. 1;
FIG. 3 is a schematic view of the drive member and spindle connection of the present invention;
FIG. 4 is a cross-sectional view of the spindle of the present invention;
FIG. 5 is a schematic view of the spindle and bearing connection of the present invention;
FIG. 6 is a schematic illustration of the plunger cylinder configuration of the present invention;
in the figure: 100. a housing; 110. a gland; 111. a bearing; 200. a main shaft; 210. a first rotating shaft; 211. a jacket; 220. a second rotating shaft; 230. a third rotating shaft; 231. a limiting sleeve; 240. connecting holes; 241. a first limiting part; 242. a guide groove; 300. a drive member; 310. a plunger cylinder; 311. a pressure lever; 312. pressing a plate; 320. an oil supply cover; 330. an oil distribution disc; 340. and (7) connecting the shafts.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 6, a hollow shaft hydraulic motor for an injection molding machine, the hollow shaft hydraulic motor being used for driving a screw of the injection molding machine to rotate the screw of the injection molding machine, comprising:
the casing 100, the lateral wall of casing 100 is the cylinder setting.
The spindle 200 can be rotatably arranged in the shell 100, the spindle 200 is provided with connecting holes 240 penetrating through two end faces of the spindle 200, the center line of the connecting hole 240 and the center line of the shell 100 are positioned on the same straight line, and one end of the screw rod can be movably clamped in the connecting hole 240; one end of the screw rod is movably clamped in the connecting hole 240 of the main shaft 200, the main shaft 200 drives the screw rod to rotate, compared with the prior art, the structure of the motor is simplified due to the arrangement of the connecting hole 240, production materials are saved, production cost is saved, one end of the screw rod is installed in the connecting hole 240, the screw rod can rotate along with the main shaft 200, the installation process is simplified, and working efficiency is improved.
The driving member 300, the driving member 300 is disposed on the housing 100 and is used for driving the main shaft 200 to rotate, and the driving member 300 can drive the screw to rotate, thereby completing the injection molding process.
The main shaft 200 includes a first rotating shaft 210, and a second rotating shaft 220 and a third rotating shaft 230 respectively disposed at two ends of the main shaft 200, and the connection hole 240 penetrates the first rotating shaft 210, the second rotating shaft 220 and the third rotating shaft 230; the central axes of the second rotating shaft 220 and the third rotating shaft 230 are positioned on the same straight line and are distributed in a staggered manner with the central axis of the first rotating shaft 210, and the central axes of the second rotating shaft 220 and the third rotating shaft 230 are positioned on the same straight line, so that the coaxiality of the second rotating shaft 220 and the third rotating shaft 230 is ensured, and the rotating stability of the screw is ensured; the first rotating shaft 210, the second rotating shaft 220 and the third rotating shaft 230 form a cam mechanism respectively, the cam mechanism has the characteristics of compact structure and high reliability, stable motion can be obtained by adopting the cam mechanism, synchronization can be kept when the speed is changed, and the rotation stability of the screw can be improved; and the failure rate of the cam mechanism is low, and the maintenance frequency is reduced.
The two ends of the shell 100 are respectively provided with a gland 110, the shell 100 is internally provided with a bearing 111, the second rotating shaft 220 and the third rotating shaft 230 are respectively connected with one bearing 111, the gland 110 is provided with a through hole which is communicated with the connecting hole 240, and the bearing 111 is adopted to support the second rotating shaft 220 and the third rotating shaft 230, so that the friction coefficient in the movement process can be reduced, and the rotation precision of the second rotating shaft and the third rotating shaft can be ensured; the arrangement of the gland 110 obstructs the connection between the inside of the motor and the outside, and can prevent dust from entering the inside of the motor; the through hole is provided such that one end of the screw can be disposed in the connection hole 240 through the through hole of the cover 110.
In this embodiment, a position-limiting sleeve 231 is disposed at an end of the third rotating shaft 230 away from the first rotating shaft 210, and the position-limiting sleeve 231 can abut against the bearing 111 to prevent the third rotating shaft 230 from separating from the bearing 111; the bearing 111 adopts a tapered roller bearing, and the tapered roller bearing can bear large radial load and axial load; in addition, the cover 110 on the housing includes an upper cover and a lower cover, both of which are provided with through holes.
The central line of the connecting hole 240 and the central axis of the second rotating shaft 220 are located on the same straight line, so that the connecting hole 240 and the rotating central line of the second rotating shaft 220 are the same, and the second rotating shaft 220 can drive the screw to rotate by rotating, thereby completing the injection molding process.
The first limiting part 241 is arranged in the connecting hole 240, the second limiting part is arranged on the screw, and the first limiting part 241 is connected with the second limiting part, so that relative rotation between the screw and the spindle 200 is limited, and the screw can rotate along with the spindle 200.
The first limiting part 241 is set as a guide groove 242, the second limiting part is set as a limiting bulge, and the limiting bulge is movably clamped in the guide groove 242, so that the relative rotation between the screw and the main shaft 200 is limited, the screw can rotate along with the main shaft 200, the concentricity does not need to be adjusted, and the installation process is simplified; in addition, the screw rod and the main shaft 200 can be connected through a key, the key is connected with the main shaft 200 through the key, and the key has the advantages of being simple in structure, convenient to disassemble and assemble, good in centering performance and the like, the screw rod is enabled to rotate along with the main shaft 200, the concentricity of the screw rod and the main shaft 200 does not need to be adjusted, and the installation process is simplified.
The driving member 300 comprises a plurality of plunger cylinders 310, the plunger cylinders 310 are distributed on the side wall of the shell 100 at equal intervals, one end of each plunger cylinder 310 is arranged in the shell 100 and can be abutted against the side wall of the first rotating shaft 210, the first rotating shaft 210 is driven to rotate by controlling the extension and retraction of the plunger cylinders 310, the second rotating shaft 220 and the third rotating shaft 230 are driven to rotate, the screw rod is driven to rotate, the transmission process is reliable in work, and the stability of the rotation of the screw rod can be guaranteed.
In this embodiment, the number of the plunger cylinders of the hollow shaft hydraulic motor is five, which improves the stability of the transmission process, and in addition, the number of the plunger cylinders of the hollow shaft hydraulic motor can also be seven, ten, etc., which is also within the protection scope of the present application.
The outer sleeve 211 is arranged on the outer side of the first rotating shaft 210, and the pressing rod 311 and the pressing plate 312 are arranged at the bottom of the plunger cylinder 310; the pressing plate 312 is disposed in the housing 100 and can abut against the outer cover 211; one end of the pressure rod 311 is connected with the plunger cylinder 310, the other end of the pressure rod 311 is connected with the pressure plate 312, an outer sleeve 211 is arranged between the first rotating shaft 210 and the plunger cylinder 310, the outer sleeve 211 avoids the direct contact between the plunger cylinder 310 and the first rotating shaft 210, the abrasion of the first rotating shaft 210 is reduced, and the service life of the hollow shaft hydraulic motor is prolonged.
The driver 300 further includes an oil supply cover 320, an oil distribution pan 330, and a connection shaft 340, the oil supply cover 320 being disposed outside the casing 100; the oil distribution disc 330 is arranged on the inner side of the oil supply cover 320 and is used for supplying oil to the plunger cylinder 310, and the connecting shaft 340 is used for driving the oil distribution disc to rotate; the main shaft 200 drives the connecting shaft 340 to rotate through the gear, and the connecting shaft 340 drives the oil distribution disc 330 to rotate, so that the oil supply process of the plunger cylinder 310 is completed, and the stable operation of the hollow shaft hydraulic motor is ensured.
In the present embodiment, the hollow shaft hydraulic motor is a radial piston motor, and the working principle thereof is as follows: hydraulic oil sequentially enters the plunger cylinder 310 through the oil supply cover 320, the oil distribution disc 330 and the connecting shaft 340, the pressing rod 311 extends out to tightly abut against the outer sleeve 211, the outer sleeve 211 abuts against the side wall of the first rotating shaft 210 to enable the first rotating shaft 210 to rotate, oil is continuously supplied to the next plunger cylinder 310 after the first rotating shaft 210 rotates for a certain angle to drive the first rotating shaft 210 to rotate for a certain angle again, the process is repeated, the rotation of the first rotating shaft 210 is completed, the second rotating shaft 220 and the third rotating shaft 230 are driven to rotate, and therefore the screw rod is driven to rotate; the hollow shaft hydraulic motor has the advantages of simple structure, small volume, light weight, reliable work, long service life, low noise and the like.
Of course, the hollow shaft hydraulic motor provided in the application can be applied to the technical field of injection molding machines, and can also be applied to other fields and transmission structures.
The utility model provides a hollow shaft hydraulic motor for an injection molding machine, wherein a main shaft is provided with connecting holes penetrating through two end faces of the main shaft, one end of a screw is movably clamped in the connecting holes, and the main shaft drives the screw to rotate, so that the structure of the motor is simplified, the production cost is saved, the installation process is simplified, and the working efficiency is improved; the screw rod is provided with a limiting bulge, the screw rod and the limiting bulge are connected, relative rotation between the screw rod and the main shaft is limited, and the screw rod can rotate along with the main shaft.
The technical solutions of the present invention are explained in detail above with reference to the accompanying drawings, and the described embodiments are used to help understanding the idea of the present invention. The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
Moreover, descriptions of the present invention as relating to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Claims (9)
1. A hollow shaft hydraulic motor for an injection molding machine, the hollow shaft hydraulic motor for driving a screw of the injection molding machine, comprising:
the side wall of the shell is arranged in a cylindrical shape;
the spindle is rotatably arranged in the shell, connecting holes penetrating through two end faces of the spindle are formed in the spindle, the center line of each connecting hole and the center line of the shell are located on the same straight line, and one end of the screw rod is movably clamped in the connecting hole;
the driving piece is arranged on the shell and used for driving the main shaft to rotate.
2. The hollow shaft hydraulic motor for an injection molding machine according to claim 1, wherein the main shaft includes a first rotating shaft, and a second rotating shaft and a third rotating shaft respectively provided at both ends of the main shaft, and the connecting hole penetrates the first rotating shaft, the second rotating shaft, and the third rotating shaft; the central axes of the second rotating shaft and the third rotating shaft are positioned on the same straight line and are distributed in a staggered manner with the central axis of the first rotating shaft.
3. The hollow shaft hydraulic motor for an injection molding machine as claimed in claim 2, wherein a gland is provided at each end of the housing, a bearing is provided in the housing, the second rotating shaft and the third rotating shaft are connected to one of the bearings, and a through hole is provided in the gland, the through hole communicating with the connecting hole.
4. A hollow shaft hydraulic motor for an injection molding machine according to claim 3, wherein a center line of the connecting hole is located on the same straight line as a center axis of the second rotating shaft.
5. The hollow shaft hydraulic motor for an injection molding machine according to claim 1 or 4, wherein a first limit portion is provided in the connection hole, a second limit portion is provided on the screw, and the first limit portion is connected to the second limit portion.
6. The hollow shaft hydraulic motor for an injection molding machine according to claim 5, wherein the first stopper portion is provided as a guide groove, and the second stopper portion is provided as a stopper protrusion which is movably caught in the guide groove.
7. A hollow shaft hydraulic motor for an injection molding machine as claimed in claim 2, wherein said drive member includes a plurality of plunger cylinders equidistantly distributed on a side wall of said housing, and one end of each of said plunger cylinders is disposed in said housing and is abuttable against a side wall of said first rotating shaft.
8. The hollow shaft hydraulic motor for the injection molding machine according to claim 7, wherein an outer sleeve is provided outside the first rotating shaft, and a pressing rod and a pressing plate are provided at the bottom of the plunger cylinder; the pressure plate is arranged in the shell and can be abutted against the outer sleeve; one end of the pressure rod is connected with the plunger cylinder, and the other end of the pressure rod is connected with the pressure plate.
9. The hollow shaft hydraulic motor for an injection molding machine according to claim 7, wherein the drive member further includes an oil supply cover, an oil distribution pan, and a connecting shaft, the oil supply cover being disposed outside the casing; the oil distribution disc is arranged on the inner side of the oil supply cover and used for supplying oil to the plunger type cylinder, and the connecting shaft is used for driving the oil distribution disc to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121328617.8U CN215434867U (en) | 2021-06-15 | 2021-06-15 | Hollow shaft hydraulic motor for injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121328617.8U CN215434867U (en) | 2021-06-15 | 2021-06-15 | Hollow shaft hydraulic motor for injection molding machine |
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| Publication Number | Publication Date |
|---|---|
| CN215434867U true CN215434867U (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121328617.8U Active CN215434867U (en) | 2021-06-15 | 2021-06-15 | Hollow shaft hydraulic motor for injection molding machine |
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| CN (1) | CN215434867U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116292066A (en) * | 2023-02-08 | 2023-06-23 | 宁波欧易液压有限公司 | Hydraulic motor |
-
2021
- 2021-06-15 CN CN202121328617.8U patent/CN215434867U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116292066A (en) * | 2023-02-08 | 2023-06-23 | 宁波欧易液压有限公司 | Hydraulic motor |
| CN116292066B (en) * | 2023-02-08 | 2024-04-23 | 宁波欧易液压有限公司 | Hydraulic motor |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220809 Address after: 315800 room 2-2, building 1, No. 271, Anju Road, Xiaogang street, Beilun District, Ningbo City, Zhejiang Province Patentee after: Ningbo Muzhuo Machinery Technology Co.,Ltd. Address before: 315100 Room 102, unit C, building 6, Fangzhuang second village, Qiuai Town, Yinzhou District, Ningbo City, Zhejiang Province Patentee before: Xie Keke |
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| TR01 | Transfer of patent right |