JPH08243715A - Molding press for motor rotor - Google Patents

Abstract

PURPOSE: To provide a molding press device for a motor rotor which contributes to the saving of time and a cost reduction and improves the quality of products by extruding a laminate in synchronization with a laminate loading stage during the process of a molding press. CONSTITUTION: This molding press has stationary mold means 21 and 22 and moving mold means 23 and 24 and an intermediate mold 213 formed with three cavities 29 between the stationary mold means and the moving mold means. Raw material is injected from an injection port 26 into the cavities 29 loaded with the laminate and the moving mold means are pushed and moved by hydraulic operating means, by which the intermediate mold 213 is pressed under pressure by the stationary mold means. The loading and extruding of the laminate are thus executed in synchronization with the molding press stage of the laminate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding press device for a motor rotor.

[0002]

2. Description of the Related Art A conventional motor rotor molding press device, as shown in FIG. 8, includes a fixed mold 11 and a fixed mold 12 which are connected to each other by screws, and a sleeve 15 is fitted to both members 11 and 12. A raw material injection port 16 for injecting a raw material is formed at one end thereof, and the injected raw material is injected from a raw material injection gate 18 by the operation of a piston 17. Also,
The conventional apparatus has a movable form 13 corresponding to the fixed form 11 and the fixed mold 12 and similarly screwed together.
And a movable mold 14. The movable mold 1
4 has a cavity 19 for loading a molding press product. Further, in the fixed mold 12, there is provided an annular groove 110 at one end which communicates with the cavity 19 and introduces the raw material injected from the raw material injection gate 18 into the cavity 19 filled with the product pieces, and The cavity 19 of the movable mold 14 has an annular groove 111 at the other end. Then, by the annular groove 110 at one end formed in the fixed mold 12, the cavity 19 formed in the movable mold 14, and the annular groove 111 at the other end formed continuously with the cavity 19, a motor rotor of the motor rotor is formed. A molding press shape is formed. next,
When the mold is closed, the movable mold 14 is operated by hydraulic operation means.
After pressing and pressing with the fixed mold 11 and the fixed mold, the raw material is injected from the raw material inlet 16 so that the piston 17 pushes the raw material into the cavity in which the product pieces are loaded. On the other hand, after cooling, at the time of opening the mold, the movable mold 14 is moved backward by the hydraulic operating means to open the mold, and the push rod 112 pushes out the slab that has already completed the molding press.

[0003]

However, the conventional molding press device of this kind has problems that the efficiency is not very good, the productivity is low, and the molding work process takes time, resulting in cost increase. are doing.

A main object of the present invention is to extrude the product in synchronization with the process of loading the product during the molding press, contributing to time saving and cost reduction and improving product quality. , To provide a molding press device for a motor rotor.

[0005]

In order to solve the above-mentioned problems, a molding press device for a motor rotor according to the present invention comprises a fixed mold means composed of a fixed mold and a fixed mold, and a movable mold and a movable mold. The movable mold means, and the fixed mold means and the movable mold means, which are provided between the fixed mold means and the movable mold means.
An intermediate mold in which a plurality of cavities for molding and pressing are formed. Raw materials are injected from the fixed mold means into the cavities in which the product pieces of the intermediate mold are charged, and the movable parts are moved by the hydraulic operation means. By pushing the mold, the intermediate mold is pressed by the fixed mold means, and the product can be loaded and extruded in synchronization with the molding press process of the product.

Further, in the apparatus of the present invention, the plurality of product-loading press cavities are annularly arranged in the intermediate mold at equal intervals, for example, three in a distributed arrangement.
The movable mold means has a rotating device joined to the intermediate mold with a screw and a fixed key, and rotates the intermediate mold by 120 ° when the molding press device is opened to form a cavity into which a product is loaded. While moving to the molding press position, the cavity that completed the molding press of the product is rotated to the extrusion position, and along with this, the empty cavity where the product was extruded is moved to the original position, and when the mold is closed, the product is reloaded. A circulation process of the molding press is formed so as to perform the molding press, extrusion and charging of the piece.

In the device of the present invention, the rotating device has one end joined to the intermediate mold by a connecting unit and the other end provided with a hydraulic device and a male clutch. The mold includes a drive shaft that pushes out and rotates the mold, and retracts the hydraulic device when the mold is closed; and a female clutch and a first joint that are fitted to the drive shaft. When the mold is opened, the intermediate mold is operated by the hydraulic device. To engage the male clutch with the female clutch, and when the mold is closed, retract the hydraulic device to separate the male clutch and the female clutch, and slide the link arm in the transverse direction. A push plate for preventing movement and an output part, and a second joint for the output part. The output part is moved forward and closed by the hydraulic operating means when the mold is opened. At times, the output unit is retracted, and the first joint of the link arm and the second joint of the output unit of the brake unit are connected. When the mold is opened, the output unit is operated by the action of the link assembly. By transmitting the force generated by the forward movement of the link arm to rotate the link arm to engage the male clutch and the female clutch and to rotate the intermediate mold in conjunction with the engagement. When the mold is closed, the output portion is retracted by the action of the link assembly to rotate the link arm, and the male clutch and the female clutch are separated, so that the drive shaft does not rotate and the link is rotated. And a link mechanism configured to return only the arm to the original position.

Further, in the apparatus of the present invention, the hydraulic system is a first hydraulic cylinder, the male clutch has at least one key, and correspondingly the female clutch has at least one key. The above-mentioned keys and the above-mentioned key groups are provided in the same number so as to correspond to each other so that the meshing operation is accurately performed, while the above-mentioned brake is a second hydraulic cylinder or an air cylinder. The output part of the brake is a drive bar, and the link assembly is composed of two links, so that the intermediate mold is automatically decelerated just before it is rotated by a predetermined angle, and the inertia of the rotating device is reduced. I am letting you.

Further, in the apparatus of the present invention, the fixed mold means corresponding to the molding press apparatus is
Further, a sleeve for molding and pressing the product by injecting the raw material into the cavity at the time of closing the mold, an end annular groove for introducing the raw material into the cavity, and an annular groove attached near the annular groove, the raw material injection of the product is performed. A loop-shaped knife that can automatically cut off the flash at the entrance.

Further, in the apparatus of the present invention, the movable mold means corresponding to the push-out position further comprises a third hydraulic cylinder for pushing out the molding pieces that have been molded and pressed when the mold is closed, and the movable mold means is provided at the loading position. The corresponding fixed mold means further comprises a filling device, i.e. a fourth hydraulic cylinder, for introducing the product into the empty cavity when the mold is closed, and the product is automatically adjusted to the empty cavity at the charging position. And a guide plate for preventing damage that may be introduced more easily and that may occur when the unaligned stack is loaded.

[0011]

In the molding press device for a motor rotor according to the present invention, an intermediate mold having a plurality of cavities for loading the product pieces is provided between the movable mold means and the fixed mold means. Then, the raw material is injected by the fixed mold means into the cavity in which the product pieces of the intermediate mold are loaded, and the movable mold means is pushed by the hydraulic operating means to fix the intermediate mold. It is pressed by the molding means, and the loading of the product and the extruding of the product after pressing are performed in synchronization with the molding pressing process of the product. As a result, it is possible to save time and cost for the molding press.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. Needless to say, the present invention is not limited to these examples, and it is needless to say that various design changes and modifications are allowed without departing from the technical idea of the present invention. FIG. 1 is an explanatory diagram showing a preferred embodiment of the present invention. In the figure, 21 is a fixed formwork,
Reference numeral 22 denotes a fixed mold, and a sleeve 25 having an injection port 26 at its outer end is fitted and inserted between them. The raw material is injected from the injection port 26, ejected from the raw material injection gate 28 under the action of the piston 27, introduced into the cavity 29 via the annular groove 210 at one end, and provided for the molding press. Further, 23 is a movable mold, and 24 is a movable mold. The movable mold 24 and the fixed mold 2
The intermediate mold 213 is sandwiched between the two and the cavity 29 is formed in the intermediate mold 213.
An annular groove 211 at the other end is formed at the other end of the cavity 29 corresponding to the annular groove 210 at the one end formed in the fixed mold 22 at the one end of the cavity 29. Has been formed. Then, the annular groove 210 at one end formed in the fixed mold 22,
Cavity 2 formed in the intermediate mold 213
The molding press shape of the motor rotor is formed by 9 and the annular groove 211 at the other end that is continuously formed on the movable mold 24. Further, 212 is a push rod which is provided so as to penetrate the movable mold 23 and the movable mold 24.

FIG. 2 is a plan view of the intermediate mold 213. As shown in the figure, the intermediate mold 213 has a plurality of, preferably three cavities 29A, 29.
B and 29C are arranged in an annular shape and distributed at equal intervals. When the mold is opened, the intermediate mold 213 is rotated 120 ° clockwise (clockwise) about the drive shaft 30. And
When the mold is closed, a product to be molded and pressed is loaded into the cavity 29A, a molding press is performed in the cavity 29B, and the product after completion of the molding press is pushed out in the cavity 29C.

FIG. 3 is a vertical sectional view of a preferred embodiment of the molding press device for a motor rotor of the present invention. 1 and 2 are designated by the same reference numerals, and the description thereof will be omitted. In the figure, the cavity 2
The molding press has already been completed for the stack in 9C, and the loop knife 41 automatically cuts off the flash of the material injection gate 28 of the stack. At the same time, the third hydraulic cylinder 42 pushes out the pieces. Reference numeral 401 is a piece before the molding press is applied, and is introduced into the empty cavity 29A by the fourth hydraulic cylinder 402. Four
Reference numeral 03 is a guide plate for aligning the position of the loaded product 401 with the cavity 29 in order to prevent damage caused when the unpositioned product is loaded. is there.

FIG. 4 is a vertical sectional view showing a closed state of the embodiment having a clutch. The same or corresponding parts as those in FIGS. In the figure, one end of the drive shaft 30 is connected to the intermediate mold 213 by a screw 501 and a fixed key 502,
A first hydraulic cylinder 55 and a male clutch are attached to the other end. The male clutch has three keys, but the operating principle is the same, and for the sake of simplicity, 1
Only one key 54 is displayed. Reference numeral 52 is a link arm fitted with the drive shaft 30, and has a female clutch. The female clutch also has three key groups corresponding to the male clutch, but one key group 5 for the same reason.
Only 3 is displayed. In the open state, the first hydraulic cylinder 55 is in the retracted state, and at this time, the key 54 and the key group 53 are in the separated state. Reference numeral 51 denotes a push plate for preventing the link arm 52 from slidingly moving in the lateral direction.

FIG. 5 is a vertical sectional view showing an opened state of the embodiment having a clutch. Since each component is the same as that in FIG. 4, the same reference numerals are all attached. Here, in the open state, the first hydraulic cylinder 55 is pushed forward and the key 5
Reference numeral 4 is in mesh with the key group 53.

FIG. 6 is an explanatory view showing the forward movement state of the brake output unit of the rotating device in the embodiment of the present invention, and is a state view when seen from the movable mold 23 toward the intermediate mold 213 in FIG. Next, the operation of the rotating device shown in this figure will be described. Reference numeral 701 is a pivot point of the second hydraulic cylinder 70, and one end of the drive bar 71 is connected to the second joint 7.
It is connected to the link 72 by 22. When the second hydraulic cylinder 70 propels the drive bar 71 forward, the link 72 rotates counterclockwise (counterclockwise) around the fulcrum 721, and the working force is interlocked with this by the link 73. Is transmitted to the link arm 52, and the arm 52 is rotated clockwise (clockwise) about the first joint 732.
Since the link arm 52 is fitted to the drive shaft 30 and the key 54 and the key group 53 are meshed at that time (see FIG. 5), the drive shaft 30 is rotated clockwise (clockwise), In conjunction with this, the intermediate mold 213 is also rotated clockwise (clockwise).

FIG. 7 is an explanatory view showing the retracted state of the brake output of the rotating device in the preferred embodiment of the present invention.
The reference numerals in the figure are the same as those in FIG. In this state, when the molding device is closed, the key 54 and the key group 53 are already separated, so that the drive bar 7
At the time of retreat of 1, the link arm 52 is simply returned to its original position and no rotational force acts on the drive shaft 30, and the operation of FIG. 6 is repeated at the next mold opening. The second hydraulic cylinder 70 shown in FIG. 6 may of course be replaced with an air cylinder, and since the principle is exactly the same, the description is omitted.

[0019]

As described above, according to the present invention and the construction of the appended claims, since the product can be loaded and pushed out in synchronization with the molding press process of the product, time saving and cost reduction can be achieved. In addition, production efficiency and product quality can be improved.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a molding press device for a motor rotor of the present invention.

FIG. 2 is a plan view of an intermediate mold according to this embodiment.

FIG. 3 is a vertical sectional view of the present embodiment.

FIG. 4 is a vertical cross-sectional view showing a closed state of the present embodiment including a clutch.

FIG. 5 is a vertical cross-sectional view showing an open state of the present embodiment including a clutch.

FIG. 6 is an explanatory view showing a forward state of a brake output unit of the rotating device in the present embodiment, and is a state diagram when seen from the movable mold in the intermediate mold direction in FIG.

FIG. 7 is an explanatory diagram showing a retracted state of a brake output unit of the rotating device according to the present embodiment.

FIG. 8 is an explanatory diagram of a conventional motor rotor molding press device.

[Explanation of symbols]

 21 ... Fixed form 22 ... Fixed mold 23 ... Movable form 24 ... Movable mold 25 ... Sleeve 26 ... Injection port 27 ... Piston 28 ... Raw material injection gate 29 ... Cavity 30 ... Drive shaft 41 ... Loop knife 42 ... Third Hydraulic cylinder 51 ... Push rod 52 ... Link arm 53 ... Key group 54 ... Key 55 ... First hydraulic cylinder 70 ... Second hydraulic cylinder 71 ... Drive bar 72 ... Link 73 ... Link 210 ... One end annular groove 211 ... Others End annular groove 212 ... Push rod 213 ... Intermediate mold 401 ... Stack 402 ... Fourth hydraulic cylinder 403 ... Guide plate 501 ... Screw 502 ... Fixing key

Claims (6)

[Claims] 1. A fixed mold means composed of a fixed mold and a fixed mold, a movable mold means composed of a movable mold and a movable mold, and provided between the fixed mold means and the movable mold means. An intermediate mold having a plurality of cavities for loading and molding pressing the product pieces, and the raw material is injected from the fixed mold means into the cavity in which the product pieces of the intermediate mold are installed. By pressing the movable mold by the hydraulic operating means, the intermediate mold is narrowed by the fixed mold means, and the loading and pushing out of the product pieces can be performed in synchronization with the molding press process of the product pieces. A molding press device for a motor rotor, which is characterized in that 2. The plurality of product charging press cavities are annularly equidistantly arranged in the intermediate mold, for example, 3 cavities.
The movable mold means has a rotating device joined to the intermediate mold with a screw and a fixed key, and the intermediate mold is rotated by 120 ° when the molding press device is opened. While moving the loaded cavities to the molding press position, rotate the cavities that have completed the molding press on the slab to the extrusion position, and along with this move the empty cavities from which the slab has been extruded to their original positions. The molding press device for a motor rotor according to claim 1, wherein a molding press circulation process is formed so as to perform molding press, extrusion and charging of the stack again when the mold is closed. 3. The rotating device has one end joined to the intermediate mold by a connecting unit, the other end having a hydraulic device and a male clutch, and when the mold is opened, the hydraulic device pushes out the intermediate mold to rotate it. When the mold is closed, the drive shaft for retracting the hydraulic device is provided, and the drive shaft is fitted to the female clutch and the first joint, and when the mold is opened, the intermediate mold is pushed out by the hydraulic device to push the male clutch. A link arm that meshes with the female clutch, and when the mold is closed, retracts the hydraulic device to separate the male clutch and the female clutch; and a push plate that prevents the link arm from sliding in the transverse direction. , Having an output part, having a second joint in the output part, and moving the output part forward when the mold is open and retracting the output part when the mold is closed by the hydraulic operating means. The brake, the first joint of the link arm and the second joint of the output part of the brake are connected to each other, and when the mold is opened, the force generated by the advance of the output part by the action of the link assembly is applied. By transmitting to the link arm and rotating the link arm, the male clutch and the female clutch are engaged with each other, and the intermediate mold is rotated in conjunction with the engagement, while the link assembly is engaged when closed. By retracting the output part to rotate the link arm and separating the male clutch and the female clutch, the drive shaft does not rotate and only the link arm returns to its original position. The molding press device for a motor rotor according to claim 2, further comprising a link mechanism configured to perform the above. 4. The hydraulic system is a first hydraulic cylinder, wherein the male clutch has at least one key, and correspondingly the female clutch has at least one key group, The keys and the key groups are provided in the same number so as to correspond to each other so that the operation can be performed accurately. On the other hand, the brake is a second hydraulic cylinder or an air cylinder, and the output of the brake is A drive bar, wherein the link assembly is composed of two links, so that the intermediate mold is automatically decelerated immediately before rotating by a predetermined angle to reduce inertia of the rotating device. Item 3. A molding press device for a motor rotor according to Item 3. 5. The fixed molding means corresponding to the molding press device further comprises a sleeve for pouring the raw material into the cavity at the time of closing the mold to mold the product, and an end portion for introducing the raw material into the cavity. 3. The molding press device for a motor rotor according to claim 2, further comprising: an annular groove; and a loop-shaped knife that is attached in the vicinity of the annular groove and is capable of automatically cutting off the flash of the raw material injection gate of the stack. 6. The movable mold means corresponding to the push-out position further comprises a third hydraulic cylinder for pushing out the molding pieces that have been molding-pressed when the mold is closed, and the fixed mold means corresponding to the charging position further comprises: , A filling device for introducing the product into the empty cavity when the mold is closed, that is, a fourth hydraulic cylinder, and the loading position is automatically adjusted to the empty cavity so that the product is more easily introduced and aligned. The molding press device for a motor rotor according to claim 2, further comprising: a guide plate for preventing damage caused when the stack is not loaded.