A motor bar pultrusion device

Abstract

The utility model provides a kind of motor guide bar pultrusion forming device, it is applied to motor guide bar production technical field.The device includes operation platform, by the detachable connection of base and operation platform, guide bar mould block is inserted in outer cylinder inside, outer cylinder and base are threadedly connected, when needing to replace motor guide bar mould, close heating wire power supply, the extension end of hydraulic push rod is moved to shortest position, and guide bar mould block is pushed to hydraulic push rod direction from the end of outer cylinder away from hydraulic push rod to separate guide bar mould block and outer cylinder, while without disconnecting power cord of heating wire one by one, when installing new guide bar mould block, new guide bar mould block is inserted into outer cylinder, and make the electrode contact on mounting ring and the electrode contact on heating strip power input end contact, the replacement of mould can be completed, without being connected by flange and flange seat bolt.Equipped in this way, different moulds can be replaced according to production needs, and the replacement efficiency of mould is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor guide bar production, and in particular to a motor guide bar pultrusion molding device. Background Technology

[0002] Motor conductor bars are the core conductive components of the rotor of an AC asynchronous motor. They are embedded in the rotor core slots and connected by end rings to form a "cage-type" closed loop. Their core function is to cut the rotating magnetic field of the stator to generate induced current, which in turn interacts with the magnetic field to form electromagnetic torque to drive the rotor to rotate. In terms of materials, aluminum (low cost, easy to die-cast, suitable for medium and low power), copper (high conductivity, low loss, suitable for high power), or copper-clad aluminum (balancing performance and cost) are commonly used. For special heavy-load starting scenarios, high-resistance alloys (such as brass) are used. In terms of structure, there are ordinary cage type (for normal working conditions), deep slot type (utilizing the skin effect to improve starting torque), double cage type (with upper and lower cages for starting / running, balancing starting and efficiency), and cast aluminum / cast copper integrated type (no joints, high reliability), etc. Its conductivity and structural design directly determine the motor efficiency (copper conductors are 2% to 5% more efficient than aluminum conductors), starting performance (high-resistance materials have large starting torque) and operational reliability. Motor conductors are usually made by using copper or aluminum columns through metal pultrusion molding equipment. The principle is to push the copper or aluminum column into the mold, plasticize the copper or aluminum column through the mold, and output it by the pultrusion molding device.

[0003] Currently, the dies in metal pultrusion molding equipment are typically connected to the equipment's flange seats via bolts. When different dies need to be replaced, the bolts must be removed one by one, and the die removed. After replacing the die, the bolts must be tightened one by one before the die can be reconnected to the metal pultrusion molding equipment. This makes it impossible to quickly change dies according to production needs during the production process. Therefore, there is an urgent need for a motor-guided pultrusion molding device with faster die replacement capabilities. Utility Model Content

[0004] The purpose of this invention is to provide a motor guide bar pultrusion molding device to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A motor guide bar pultrusion molding device includes: an operating platform, a guide groove at one end of the operating platform, and a hydraulic push rod fixedly connected to the top of the other end of the operating platform. The operating platform has a base slidably connected to its top surface via the guide groove at its center. The base has symmetrically arranged limit holes on both sides. The operating platform has several symmetrically arranged positioning holes on both sides of the guide groove on its top surface. Limit pins pass through the limit holes and are inserted into the positioning holes. The base has a cylindrical cavity at its top, with internal threads on the inner wall of the cavity. A detachable guide bar molding structure is connected to the internal threads of the cavity. The extension end of the hydraulic push rod is located within the guide bar molding structure.

[0007] Furthermore, the inner diameter of the cavity near the extension end of the hydraulic push rod is larger than the inner diameter of the cavity away from the extension end of the hydraulic push rod. An annular boss is formed at the intersection of the large inner diameter and the small inner diameter of the cavity. The annular boss is used to limit the guide bar forming structure.

[0008] Furthermore, the guide bar forming structure consists of an outer cylinder, a guide bar mold block, and a heating bar.

[0009] Furthermore: the outer wall of the outer cylinder is provided with threads, and the outer cylinder is connected to the cylindrical cavity at the top of the base by the threads, and the end face of the outer cylinder and the end face of the annular boss are tightly fitted.

[0010] Furthermore: several heating bars are fixedly installed in a circumferential array inside the guide bar mold block, and an installation ring is welded to one end of the inner wall of the outer cylinder. Electrode contacts are detachably installed on the installation ring, and electrode contacts are also installed at the power input end of the heating bar.

[0011] Furthermore: the guide strip mold block is inserted into the outer cylinder. When the guide strip mold block is inserted into the outer cylinder, the electrode contacts on the mounting ring and the electrode contacts on the power input terminal of the heating strip make contact.

[0012] Furthermore, the extension end of the hydraulic push rod is detachably connected to a push block, and the outer wall of the push block is in contact with the inner wall of the outer cylinder.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: By detachably connecting the base and the operating platform, the guide bar mold block is inserted into the outer cylinder, and the outer cylinder and the base are threadedly connected. When it is necessary to replace the motor guide bar mold, the heating wire power is turned off, the extension end of the hydraulic push rod is moved to the shortest position, and the guide bar mold block is pushed from the end of the outer cylinder away from the hydraulic push rod towards the hydraulic push rod to separate the guide bar mold block from the outer cylinder. At the same time, it is not necessary to disconnect the power lines of the heating wires one by one. When installing a new guide bar mold block, the new guide bar mold block is inserted into the outer cylinder, and the electrode contacts on the mounting ring and the electrode contacts on the power input end of the heating bar are made to contact, thus completing the mold replacement. It is not necessary to connect through flanges and flange seats with bolts, so that different molds can be replaced according to production needs, thereby improving the mold replacement efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This invention provides a three-dimensional structural schematic diagram of a motor guide bar pultrusion molding device.

[0016] Figure 2 This is a side cross-sectional schematic diagram of a motor guide bar pultrusion molding device according to the present invention;

[0017] Figure 3 This invention provides a front sectional view of the guide bar forming structure of a motor guide bar pultrusion forming device.

[0018] Figure 4 This invention illustrates a motor guide bar pultrusion molding apparatus. Figure 3 Enlarged view of part A in the middle;

[0019] The annotations in the attached figures are explained as follows:

[0020] 1. Operating platform; 2. Guide groove; 3. Hydraulic push rod; 4. Base; 5. Guide bar forming structure; 501. Outer cylinder; 502. Guide bar mold block; 503. Heating bar; 5001. Mounting ring; 301. Push block. Detailed Implementation

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection", and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0023] The present invention will be further described below with reference to the accompanying drawings:

[0024] like Figures 1-4 As shown, a motor guide bar pultrusion molding device includes: an operating platform 1, with a guide groove 2 starting from the middle of one end of its top surface, and a hydraulic push rod 3 fixedly installed at the top of the other end. The hydraulic push rod 3 is used to push copper or aluminum column material into the mold for extrusion molding. A base 4 is slidably connected inside the guide groove 2. Limiting holes are symmetrically opened on both sides of the base 4. It should be noted that there are at least two limiting holes. Several positioning holes are symmetrically opened on both sides of the guide groove 2 on the top surface of the operating platform 1. Limiting pins are inserted into both sides of the base 4. The limiting pins pass through the limiting holes and positioning holes respectively, thereby limiting the base 4 on the guide groove 2. The position of the base 4 on the guide groove 2 can be adjusted according to the actual production needs. The limiting pins are made of high-strength metal material to avoid deformation during the extrusion process.

[0025] The base 4 has a cylindrical cavity at its top, and the inner wall of the cylindrical cavity is provided with internal threads. The guide bar forming structure 5 is connected to the base 4 through the internal threads, and the extension end of the hydraulic push rod 3 is located inside the guide bar forming structure 5. When a copper or aluminum column is placed inside the guide bar forming structure 5, the extension end of the hydraulic push rod 3 is displaced in the direction of the guide bar forming structure 5, pushing the copper or aluminum column into the guide bar forming structure 5 to complete the pultrusion forming. The base 4 and the guide bar forming structure 5 are connected by threads, so that the base 4 and the guide bar forming structure 5 can be separated, so as to remove the guide bar forming structure 5 and clean or apply lubricant to its interior.

[0026] The inner diameter of the cavity near the extension end of the hydraulic push rod 3 is larger than the inner diameter of the cavity away from the extension end of the hydraulic push rod 3. As a result, an annular boss is formed at the intersection of the large inner diameter and the small inner diameter of the cavity. This annular boss can limit the guide strip forming structure 5 and prevent the guide strip forming structure 5 from separating from the base 4 during the pultrusion molding process.

[0027] The aforementioned guide bar forming structure 5 consists of an outer cylinder 501, a guide bar mold block 502, and a heating bar 503;

[0028] The outer cylinder 501 has threads on its outer wall. The outer cylinder 501 is connected to the cylindrical cavity at the top of the base 4 by the threads, thereby fixing the outer cylinder 501 inside the base 4. When the outer cylinder 501 is completely fixed inside the base 4, the end face of the outer cylinder 501 and the end face of the annular boss are tightly fitted together.

[0029] An installation ring 5001 is welded to one end of the inner wall of the outer cylinder 501. An electrode contact is detachably installed on the installation ring 5001. The electrode contact is electrically connected to the control terminal of the motor guide bar pultrusion molding device controller. The controller can be installed on the side of the operating platform 1. The control terminal of the controller is also electrically connected to the control terminal of the hydraulic push rod 3. The controller is a conventional PLC controller, which will not be described in detail here. Several heating bars 503 are fixedly installed in a circumferential array inside the guide bar mold block 502. The power input terminal of the heating bar 503 faces the installation ring 5001. An electric shock contact is also installed on the power input terminal of the heating bar 503.

[0030] The guide strip mold block 502 is inserted into the outer cylinder 501. When the guide strip mold block 502 is fully inserted into the outer cylinder 501, the electrode contacts on the mounting ring 5001 and the power contacts on the power input terminal of the heating strip 503 make contact, thereby powering the heating strip 503. The heating strip 503 heats the guide strip mold block 502, thereby heating and softening the copper or aluminum column blank, making it easier to pass through the guide strip mold block 502 to form a pultrusion.

[0031] The extension end of the hydraulic push rod 3 mentioned above can also be detachably connected to a push block 301. The outer wall of the push block 301 fits against the inner wall of the outer cylinder 501, thereby making the end of the copper or aluminum column blank near the hydraulic push rod 3 more evenly stressed.

[0032] By detachably connecting the base 4 and the operating platform 1, the guide bar mold block 502 is inserted into the outer cylinder 501. The outer cylinder 501 and the base 4 are threaded together. When it is necessary to replace the motor guide bar mold, the power supply of the heating bar 503 is turned off, the extension end of the hydraulic push rod 3 is moved to the shortest position, and the guide bar mold block 502 is pushed from the end of the outer cylinder 501 away from the hydraulic push rod 3 towards the hydraulic push rod 3 to separate the guide bar mold block 502 from the outer cylinder 501. At the same time, it is not necessary to disconnect the power lines of the heating bars 503 one by one. When installing a new guide bar mold block 502, the new guide bar mold block 502 is inserted into the outer cylinder 501, and the electrode contacts on the mounting ring 5001 are made to contact the electrode contacts on the power input end of the heating bar 503. The mold replacement can be completed without the need for flange and flange seat bolt connection. This allows for the replacement of different molds according to production needs and improves the mold replacement efficiency.

[0033] Working principle: In use, the copper or aluminum column blank is placed into the outer cylinder 501. The heating strip 503 is activated by the controller to heat the guide strip mold block 502. After the guide strip mold block 502 is heated, the hydraulic push rod 3 is activated by the controller. The extension end of the hydraulic push rod 3 is activated, pushing the copper or aluminum column blank into the guide strip mold block 502, plasticizing the copper or aluminum column blank, and pushing it out of the guide strip mold block 502. When the extension end of the hydraulic push rod 3 or the push block 301 installed on the extension end is in contact with the guide strip mold block 502, that is, when the extension end stops moving, the controller controls the extension end of the hydraulic push rod 3 to retract and pull the formed motor guide strip from the end away from the hydraulic push rod 3, so that it is completely separated from the guide strip mold block 502. The pultruded copper or aluminum column blank is then cut according to the actual length requirements of the motor guide strip.

[0034] The foregoing has shown and described the basic principles, main features and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are only illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A motor guide bar pultrusion molding apparatus, comprising: An operating platform (1) is provided with a guide groove (2) at one end of the operating platform (1) and a hydraulic push rod (3) is fixedly connected to the top of the other end of the operating platform (1). The operating platform (1) is characterized in that a base (4) is slidably connected to the middle of the top surface of the operating platform (1) through the guide groove (2). Limiting holes are symmetrically provided on both sides of the base (4). Several positioning holes are symmetrically provided on both sides of the top surface of the operating platform (1) located in the guide groove (2). The limiting pin passes through the limiting hole and is inserted into the positioning hole. A cylindrical cavity is provided on the top of the base (4), and an internal thread is provided on the inner wall of the cavity. A detachable guide bar forming structure (5) is connected to the internal thread of the cavity. The extension end of the hydraulic push rod (3) is located in the guide bar forming structure (5).

2. The motor guide bar pultrusion forming apparatus according to claim 1, characterized in that: The inner diameter of the cavity near the extension end of the hydraulic push rod (3) is larger than the inner diameter of the cavity away from the extension end of the hydraulic push rod (3). A ring-shaped boss is formed at the intersection of the large inner diameter and the small inner diameter of the cavity. The ring-shaped boss is used to limit the guide bar forming structure (5).

3. The motor guide bar pultrusion forming apparatus according to claim 2, characterized in that: The guide bar forming structure (5) consists of an outer cylinder (501), a guide bar mold block (502), and a heating bar (503).

4. The motor guide bar pultrusion forming apparatus according to claim 3, characterized in that: The outer cylinder (501) has threads on its outer wall. The outer cylinder (501) is connected to the cylindrical cavity at the top of the base (4) by the threads, and the end face of the outer cylinder (501) and the end face of the annular boss are tightly fitted together.

5. The motor guide bar pultrusion forming apparatus according to claim 4, characterized in that: The guide strip mold block (502) has several heating strips (503) fixedly installed in a circumferential array. An installation ring (5001) is also welded to one end of the inner wall of the outer cylinder (501). Electrode contacts are detachably installed on the installation ring (5001). Electrode contacts are also installed at the power input end of the heating strip (503).

6. The motor guide bar pultrusion forming apparatus according to claim 5, characterized in that: The guide strip mold block (502) is inserted into the outer cylinder (501). When the guide strip mold block (502) is inserted into the outer cylinder (501), the electrode contacts on the mounting ring (5001) and the electrode contacts on the power input terminal of the heating strip (503) are in contact.

7. The motor guide bar pultrusion forming apparatus according to claim 6, characterized in that: The extension end of the hydraulic push rod (3) is detachably connected to a push block (301), and the outer wall of the push block (301) and the inner wall of the outer cylinder (501) are in contact.

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