Quick die changing structure of electric control permanent magnetic chuck

Abstract

The utility model relates to the technical field of permanent magnetic chucks, and particularly discloses an electric control permanent magnetic chuck rapid mold changing structure which comprises a mold changing shell, a plurality of electric permanent magnetic poles distributed in a matrix structure are installed in the mold changing shell, and a telescopic compensation magnetizer assembly is installed at the top of each group of electric permanent magnetic poles. Each compensation magnetizer assembly comprises a telescopic rod, the telescopic rod is sleeved with a telescopic sleeve, a fixed bottom plate is fixedly installed below the telescopic sleeve, a telescopic spring is arranged between the telescopic rod and the telescopic sleeve, and the compensation magnetizer assemblies are all made of magnetic conductive materials. Limiting sliding blocks penetrating through the telescopic rods are arranged on the peripheries of the telescopic rods, locking telescopic rods are connected to the sides, close to the surfaces of the telescopic rods, of the limiting sliding blocks, and the locking telescopic rods are sleeved with locking springs. The distance between the die and the electric permanent magnet can be compensated according to the shape of the die, so that the stability of the special-shaped die during installation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of permanent magnetic chucks, in particular to a quick die-changing structure for an electro-controlled permanent magnetic chuck. Background Technique

[0002] The mold used for plastic injection molding is called an injection molding mold, abbreviated as an injection mold. The injection mold can form plastic products with complex outer shapes, high dimensional accuracy or with inserts at one time. The structure of the injection mold is determined by the type of injection molding machine and the structural characteristics of the plastic part. Each mold is composed of a moving mold and a fixed mold. The moving mold is installed on the moving plate of the injection molding machine, and the fixed mold is installed on the fixed plate of the injection molding machine; during injection molding, the moving mold and the fixed mold form a gating system and a cavity after being closed. When the mold is separated, the plastic part or the molded part remains on the side of the moving mold, and then the plastic part is ejected by the demolding mechanism arranged in the moving mold. In order to improve the mold replacement efficiency of the injection molding machine and reduce the mold replacement time, an electro-controlled permanent magnetic chuck is used, and the attraction and release of the mold are realized through the magnetic control of the electro-controlled permanent magnetic chuck to achieve the effect of chuck die-changing.

[0003] An electro-controlled permanent magnetic chuck is a fixture designed and developed by combining electromagnetic and permanent magnetic characteristics, and is also called an electro-permanent magnetic fixture or an electro-permanent magnetic chuck. It uses an electric pulse to realize the "opening and closing" of the magnetic circuit, and the time required for this process is less than 1 second. During the process of holding the workpiece for processing, the electro-controlled permanent magnetic chuck is very safe and reliable, and can maintain the magnetic suction force indefinitely after holding the workpiece with magnetic force.

[0004] In the existing publicly disclosed technical solution, the publication number CN205075263U discloses a quick die-changing structure for an electro-controlled permanent magnetic chuck. A plurality of electro-permanent magnetic poles are arranged on the die-changing body, and the magnetic control is achieved through the electro-permanent magnetic poles to realize the attraction and release, so as to achieve efficient chuck die-changing work.

[0005] The electro-controlled permanent magnetic chuck directly realizes the attraction and release of the mold through the electro-permanent magnetic poles. The mold fits the surface of the electro-permanent magnetic poles. For a mold with a special-shaped structure, the contact surface when contacting the electro-permanent magnetic poles is small, which will reduce the attraction effect and thus reduce the stability during mold installation. Summary of the Invention

[0006] The purpose of the utility model is to provide a quick die-changing structure for an electro-controlled permanent magnetic chuck, which can compensate the distance between the mold and the electro-permanent magnet according to the shape of the mold, so as to improve the stability during the installation of the special-shaped mold, and solve the problems put forward in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A quick die-changing structure for an electro-controlled permanent magnetic chuck, including a die-changing housing, wherein a plurality of electro-permanent magnetic poles distributed in a matrix structure are installed inside the die-changing housing, and a telescopic compensating magnetic conductor assembly is installed on the top of each group of electro-permanent magnetic poles;

[0008] The compensation magnetic conductor assembly includes a telescopic rod, and a telescopic sleeve is sleeved outside the telescopic rod. A fixed bottom plate is fixedly installed below the telescopic sleeve, and a telescopic spring is arranged between the telescopic rod and the telescopic sleeve. The compensation magnetic conductor assemblies are all made of magnetic conductive materials.

[0009] Preferably, a limiting slider penetrating through the telescopic rod is arranged around the telescopic rod, and a locking telescopic rod is connected to one side of the limiting slider close to the surface of the telescopic rod. A locking spring is sleeved outside the locking telescopic rod, and an inner pillar is connected to the end of the locking telescopic rod.

[0010] Preferably, the inner pillar is fixedly installed at the inner center of the telescopic rod.

[0011] Preferably, a limiting sliding groove is opened at the connection between the limiting slider and the telescopic sleeve, and the limiting sliding groove is opened on the surface of the telescopic sleeve.

[0012] Preferably, the telescopic rod moves up and down in the telescopic sleeve through the limiting slider and the limiting sliding groove, and the telescopic rod is elastically connected to the telescopic sleeve through the telescopic spring.

[0013] Preferably, mounting screw holes are opened inside the fixed bottom plate, and fixing screws are threadedly connected inside the mounting screw holes.

[0014] Preferably, an adapting screw hole adapted to the mounting screw hole is opened at the center of the electro-permanent magnetic pole, and fixing holes for fixing the electro-permanent magnetic pole are further opened on the surface of the electro-permanent magnetic pole.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. By installing a telescopic compensation magnetic conductor assembly on the top of the electro-permanent magnetic pole, the distance between the surface of the special-shaped mold and the surface of the electro-permanent magnetic pole can be compensated, and adaptive adjustment can be made according to the surface shape of the special-shaped mold, so as to increase the fitting surface between the special-shaped mold and the compensation magnetic conductor assembly, and make the installation and suction of the special-shaped mold more stable;

[0017] 2. By arranging a limiting sliding groove and a limiting slider inside the compensation magnetic conductor assembly, the telescopic direction of the telescopic rod can be limited, the stability of the telescopic rod during sliding can be improved, and the compensation magnetic conductor assembly is installed on the top of the electro-permanent magnetic pole through bolts, which is convenient for disassembling and replacing the compensation magnetic conductor assembly. The mold does not directly contact the electro-permanent magnetic pole, and can also play a certain protective role for the electro-permanent magnetic pole. Description of the Drawings

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is the overall structural view of the present invention;

[0020] Figure 2 It is the structural schematic diagram of the die-changing housing of the present invention;

[0021] Figure 3 It is the bottom view structural schematic diagram of the fixed base plate of the present invention;

[0022] Figure 4 It is the structural schematic diagram of the internal support column of the present invention.

[0023] Explanation of reference numerals:

[0024] 1. Die-changing housing; 2. Electro-permanent magnet poles; 3. Fixed holes; 4. Compensating magnetic conductor assembly; 401. Telescopic rod; 402. Limit slider; 403. Telescopic spring; 404. Telescopic sleeve; 405. Limit chute; 406. Fixed base plate; 407. Mounting screw holes; 408. Internal support column; 409. Locking telescopic rod; 410. Locking spring; 5. Connecting screw holes. Specific embodiments

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] The present invention provides a technical solution:

[0027] Please refer to Figures 1 to 3 , an electro-controlled permanent magnet chuck rapid die-changing structure, including a die-changing housing 1, several electro-permanent magnet poles 2 distributed in a matrix structure are installed inside the die-changing housing 1, and a telescopic compensating magnetic conductor assembly 4 is installed on the top of each group of electro-permanent magnet poles 2;

[0028] The compensation magnetic conductor assembly 4 includes a telescopic rod 401, and a telescopic sleeve 404 is sleeved outside the telescopic rod 401. A fixed bottom plate 406 is fixedly installed below the telescopic sleeve 404, and a telescopic spring 403 is arranged between the telescopic rod 401 and the telescopic sleeve 404. The compensation magnetic conductor assembly 4 is made of magnetic conductive material.

[0029] By adopting the above technical solution, since a set of compensation magnetic conductor assembly 4 is arranged on the top of each group of electro-permanent magnets 2, the telescopic rod 401 on the compensation magnetic conductor assembly 4 can slide inside the telescopic sleeve 404 and squeeze the telescopic spring 403. When the electro-permanent magnet 2 is energized to generate magnetism, the magnetism can attract the mold through the compensation magnetic conductor assembly 4, and the distance between the end of the telescopic rod 401 and the electro-permanent magnet 2 is changed according to the shape of the mold, so as to compensate the distance between the mold and the electro-permanent magnet 2, so that the surface of the mold always fits with the end of the telescopic rod 401, and the stability during the installation of the mold is improved.

[0030] Specifically, as Figure 3 and Figure 4 shown, a limit slider 402 penetrating through the telescopic rod 401 is arranged around the telescopic rod 401, and a locking telescopic rod 409 is connected to one side of the limit slider 402 close to the surface of the telescopic rod 401. A locking spring 410 is sleeved outside the locking telescopic rod 409, and the end of the locking telescopic rod 409 is connected to an internal support column 408. The internal support column 408 is fixedly installed at the center inside the telescopic rod 401. A limit sliding groove 405 is opened at the connection of the limit slider 402 and the telescopic sleeve 404, and the limit sliding groove 405 is opened on the surface of the telescopic sleeve 404. The telescopic rod 401 moves up and down in the telescopic sleeve 404 through the limit slider 402 and the limit sliding groove 405, and the telescopic rod 401 is elastically connected to the telescopic sleeve 404 through the telescopic spring 403. Installation screw holes 407 are opened inside the fixed bottom plate 406, and fixing screws are threadedly connected inside the installation screw holes 407. A connecting screw hole 5 adapted to the installation screw holes 407 is opened at the center of the electro-permanent magnet 2, and fixing holes 3 for fixing the electro-permanent magnet 2 are also opened on the surface of the electro-permanent magnet 2.

[0031] By adopting the above technical solution, the end of the limit slider 402 is embedded in the surface of the telescopic rod 401, and the front end of the limit slider 402 is embedded inside the limit chute 405. When it is necessary to disassemble the compensation magnetic conductor assembly 4, press the limit slider 402 inward, and the limit slider 402 will squeeze the locking telescopic rod 409 and the locking spring 410 inward, causing the limit slider 402 to move towards the inner support column 408. At this time, the limit slider 402 will retract into the limit chute 405 until the limit slider 402 is separated from the limit chute 405. At this time, the telescopic rod 401 can be separated from the inside of the telescopic sleeve 404, and the telescopic rod 401 can be disassembled. Subsequently, the fixing screws installed inside the connecting screw hole 5 and the mounting screw hole 407 can be unscrewed to complete the disassembly work of the compensation magnetic conductor assembly 4; when the telescopic rod 401 slides inside the telescopic sleeve 404, at this time, the end of the limit slider 402 is embedded in the surface of the telescopic rod 401, and the front end of the limit slider 402 is embedded inside the limit chute 405, so that the limit slider 402 slides inside the limit chute 405, playing a guiding role for the telescopic rod 401. The fixing hole 3 is used to fixedly install the electro-permanent magnet pole 2 on the die-changing housing 1. A thermostat is also installed on the die-changing housing 1 to detect the temperature of the die-changing housing 1. When the temperature exceeds the threshold value, the thermostat can control the alarm to sound an alarm to remind the user.

[0032] Working principle: According to needs, the compensation magnetic conductor assembly 4 can be installed on the top of the electro-permanent magnet pole 2. The fixing screw passes through the connecting screw hole 5 and the mounting screw hole 407 to fix the inner support column 408 on the electro-permanent magnet pole 2. Subsequently, press the limit slider 402 inward and insert the limit slider 402 into the limit chute 405 to complete the installation work of the telescopic rod 401 and the telescopic sleeve 404. After the electro-permanent magnet pole 2 is energized, it generates magnetism, and the magnetism attracts the mold through the compensation magnetic conductor assembly 4. The telescopic rod 401 slides inside the telescopic sleeve 404. Since the end of the limit slider 402 is embedded in the surface of the telescopic rod 401 and the front end of the limit slider 402 is embedded inside the limit chute 405, the limit slider 402 slides inside the limit chute 405, playing a guiding role for the telescopic rod 401, changing the distance between the end of the telescopic rod 401 and the electro-permanent magnet pole 2, and further compensating the distance between the mold and the electro-permanent magnet pole 2, so that the surface of the mold always fits with the end of the telescopic rod 401, improving the stability during mold installation.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rapid die-changing structure for an electro-permanent magnetic chuck, comprising a die-changing housing (1), characterized in that: Inside the die-changing housing (1), a number of electro-permanent magnets (2) distributed in a matrix structure are installed, and a telescopic compensating magnetic conductor assembly (4) is installed on the top of each group of electro-permanent magnets (2); The compensating magnetic conductor assembly (4) includes a telescopic rod (401), and a telescopic sleeve (404) is sleeved outside the telescopic rod (401). A fixed bottom plate (406) is fixedly installed below the telescopic sleeve (404), and a telescopic spring (403) is arranged between the telescopic rod (401) and the telescopic sleeve (404). The compensating magnetic conductor assemblies (4) are all made of magnetic conductive materials.

2. The quick die-changing structure of an electro-permanent magnetic chuck according to claim 1, characterized in that: Limit sliders (402) penetrating through the telescopic rod (401) are arranged around the telescopic rod (401), and a locking telescopic rod (409) is connected to one side of the limit slider (402) close to the surface of the telescopic rod (401). A locking spring (410) is sleeved outside the locking telescopic rod (409), and the end of the locking telescopic rod (409) is connected to an internal support column (408).

3. The quick die change structure of an electro-permanent magnetic chuck according to claim 2, characterized in that: The internal support column (408) is fixedly installed at the center inside the telescopic rod (401).

4. The quick die-changing structure of an electro-permanent magnetic chuck according to claim 3, wherein: A limit sliding groove (405) is opened at the connection of the limit slider (402) and the telescopic sleeve (404), and the limit sliding groove (405) is opened on the surface of the telescopic sleeve (404).

5. The quick die-changing structure of an electro-permanent magnetic chuck according to claim 4, characterized in that: The telescopic rod (401) moves up and down in the telescopic sleeve (404) through the limit slider (402) and the limit sliding groove (405), and the telescopic rod (401) is elastically connected to the telescopic sleeve (404) through the telescopic spring (403).

6. The quick die-changing structure of an electro-permanent magnetic chuck according to claim 1, characterized in that: Installation screw holes (407) are opened inside the fixed bottom plate (406), and fixing screws are threadedly connected inside the installation screw holes (407).

7. The rapid die-changing structure of an electro-permanent magnetic chuck according to claim 6, characterized in that: An engagement screw hole (5) adapted to the installation screw hole (407) is opened at the center of the electro-permanent magnet (2), and fixing holes (3) for fixing the electro-permanent magnet (2) are also opened on the surface of the electro-permanent magnet (2).

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