An APG current transformer casting equipment and process

Abstract

The present invention provides an APG mutual inductor casting device and process. The mutual inductor casting device includes: a frame; a moving mold and a fixed mold, which are arranged on the frame, and the moving mold can move towards or away from the fixed mold to achieve mold closing or mold opening; a manipulator, which is movably installed on the frame and is suitable for clamping the mutual inductor mold. The manipulator has a first position outside the moving mold and the fixed mold, and a second position that moves between the moving mold and the fixed mold to assemble or disassemble the mold with the moving mold. In this way, when at the first position outside the frame, the operator can install the mutual inductor mold or disassemble the cast mutual inductor mold. Compared with the prior art, such operation is safer and can avoid personal injury.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment processing, and particularly relates to an APG current transformer casting device and process. Background Art

[0002] Traditional production of current transformers is completed manually, that is, manual mixing of materials and pouring of raw materials into the mold are required. This not only has low production efficiency, but also the quality of the current transformers cannot be guaranteed.

[0003] To solve the above problems, Chinese patent document CN111070520A discloses a device and process suitable for producing current transformers by APG. It mainly includes a machine table, a frame, a fixed mold fixing seat, a moving mold fixing seat, a mold installation mechanism and a mold. During production, the current transformer coil needs to be installed on the mold first, then the mold is installed on the mold bracket of the mold installation mechanism, and then the moving mold fixing seat and the fixed mold fixing seat are closed for injection molding. The defect of the above solution is that: since the mold bracket is located between the fixed mold fixing seat and the moving mold fixing seat, during the process of installing the mold on the mold bracket, if there is a misoperation of closing the mold, it will cause harm to personnel, so there are certain safety hazards; in addition, the above device can only produce one current transformer at a time. If multiple mold installation mechanisms are set on the machine table to improve production efficiency, the mold needs to be disassembled and assembled with the mold installation mechanism one by one, which is time-consuming and laborious and has low production efficiency. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of low safety in the production process of current transformers in the prior art, so as to provide an APG current transformer casting device and process with high safety.

[0005] For this purpose, the present invention provides a current transformer casting device, including a frame, a moving mold, a fixed mold and a manipulator. The moving mold and the fixed mold are arranged on the frame, and the moving mold can move towards or away from the fixed mold to realize mold closing or mold opening; the manipulator is movably installed on the frame and is suitable for clamping the current transformer mold. The manipulator has a first position outside the moving mold and the fixed mold, and a second position that moves between the moving mold and the fixed mold to assemble or disassemble the mold with the moving mold.

[0006] Locking components that can cooperate with the mold to lock or unlock are provided on both the manipulator and the moving mold.

[0007] The locking component includes a first locking rod, a second locking rod and a locking rod driving member. The first locking rod is respectively arranged on both sides of the mold and can be inserted into the first jacks of the manipulator, the moving mold and the fixed mold. A second jack or a first slot is formed on the first locking rod; the second locking rod is arranged on the manipulator and the moving mold, and the second locking rod is suitable for being inserted and matched with the second jack or the first slot; the locking rod driving member is connected to the second locking rod and is suitable for driving the second locking rod to cooperate with the first locking rod to lock or unlock.

[0008] The second locking rod extends along the length direction or the height direction of the manipulator and the moving mold, and one second locking rod can be locked or unlocked with the first locking rods of multiple molds.

[0009] The first locking rod is threadedly connected to the mold.

[0010] The first slot is an annular groove recessed from the outer wall of the first locking rod towards its center direction.

[0011] Mounting grooves adapted to mount some or all of the molds are formed on the manipulator, the moving mold and the stationary mold.

[0012] Multiple mounting grooves are spaced apart along the length direction and / or the height direction of the manipulator, the moving mold and the stationary mold.

[0013] It further includes a driving assembly adapted to drive the manipulator to switch actions between a first position and a second position. The driving assembly includes a first mounting seat, a first driving member, a second mounting seat and a second driving member. The first driving member is connected to the first mounting seat and is adapted to drive the first mounting seat to reciprocate along the width direction of the frame. The second mounting seat is slidably mounted on the first mounting seat, and the manipulator is fixedly mounted on the second mounting seat. The second driving member is connected to the second mounting seat and is adapted to drive the second mounting seat to reciprocate along the length direction of the frame.

[0014] The present invention provides a process for an APG current transformer casting device, including the following steps: S1, putting raw materials into a material tank and stirring, and the material tank is connected to the APG device through a material pipe; S2, heating the mold in a heating box, and the heating temperature is 150 degrees; S3, installing the current transformer coil on the mold 5, then fixing the mold on the manipulator, and finally the manipulator moves the mold to the moving mold; S4, closing the mold and injecting material, the injection pressure is 0.4 - 0.5 Mpa, and the injection time is 3 - 4 minutes; S5, performing pressure holding after the injection is completed, the pressure holding pressure is 0.4 - 0.5 Mpa, and the time is 4 - 5 minutes; S6, demolding after the pressure holding time is up, and the manipulator takes out the processed current transformer.

[0015] The technical solution of the present invention has the following advantages:

[0016] 1. The APG current transformer casting device provided by the present invention includes a frame, a moving mold, a stationary mold and a manipulator. The manipulator is adapted to hold the current transformer mold, and it has a first position located outside the moving mold and the stationary mold, and a second position where it moves between the moving mold and the stationary mold to assemble or disassemble the mold with the moving mold. That is, when in the first position located outside the frame, the operator can install the current transformer mold or disassemble the cast current transformer mold. Compared with the prior art, such operation is safer and can avoid personnel injury.

[0017] 2. The APG transformer casting equipment provided by the present invention is equipped with locking components on both the manipulator and the moving mold that can be locked or unlocked in cooperation with the mold. During assembly, the operator needs to manually place the mold with the transformer coil on the manipulator first. The locking component of the manipulator is in the locked state to fix the mold on the manipulator. Then the manipulator transfers the mold to the moving mold. During this process, the locking component of the manipulator unlocks from the mold, while the locking component on the moving mold locks with the mold to fix the mold on the moving mold. The moving mold drives the mold to close with the fixed mold. After the transformer is cast, the mold is then separated. During this process, the locking component on the moving mold remains in the locked state to enable the cast transformer mold to separate from the fixed mold. Finally, the manipulator takes out the mold on the moving mold. During this process, the locking component on the moving mold unlocks from the mold, while the locking component on the manipulator locks with the mold, thereby driving the mold to separate from the moving mold. Through the locking and unlocking of the locking component, the switching of the mold among the manipulator, the moving mold, and the fixed mold is realized, achieving automated operation and improving production efficiency.

[0018] 3. The APG transformer casting equipment provided by the present invention, the locking component includes a first locking rod, a second locking rod, and a locking rod driving member. A second jack or a first slot is formed on the first locking rod. The second locking rod is adapted to be inserted into the second jack or the first slot in a matching manner to achieve locking and unlocking with the first locking rod. The first locking rod and the second locking rod have the advantage of simple structure.

[0019] 4. The APG transformer casting equipment provided by the present invention, the second locking rod extends along the length direction or the height direction of the manipulator and the moving mold, and one second locking rod can lock or unlock with the first locking rods of multiple molds. In this way, the structure is simpler and the cost is reduced.

[0020] 5. The APG transformer casting equipment provided by the present invention, the first locking rod is threadedly connected to the mold. The first slot is an annular groove recessed from the outer wall of the first locking rod towards its center. In this way, no matter how the first locking rod rotates relative to the mold to any angle, the second locking rod can be inserted into the annular groove. Compared with the method using a jack, the assembly difficulty is reduced and it is more convenient to use.

[0021] 6. The APG transformer casting equipment provided by the present invention, multiple installation grooves are spaced along the length direction and / or the height direction of the manipulator, the moving mold, and the fixed mold, that is, the equipment can process multiple transformers at one time, greatly improving production efficiency. Description of the Drawings

[0022] 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 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.

[0023] Figure 1 It is the first three-dimensional view of the APG current transformer casting equipment of the present invention;

[0024] Figure 2 It is the second three-dimensional view of the APG current transformer casting equipment;

[0025] Figure 3 It is Figure 1 the front view of

[0026] Figure 4 It is the first assembly schematic diagram of part of the manipulator and the coil to be cast;

[0027] Figure 5 It is Figure 4 the side view of

[0028] Figure 6 It is Figure 5 the enlarged structural schematic diagram of part A in

[0029] Figure 7 It is the second assembly schematic diagram of part of the manipulator and the coil to be cast;

[0030] Figure 8 It is the three-dimensional view of the moving mold;

[0031] Figure 9 It is the side view of the moving mold;

[0032] Figure 10 It is the three-dimensional view of the fixed mold;

[0033] Figure 11 It is the assembly schematic diagram of the mold and the coil to be cast;

[0034] Figure 12 It is Figure 11 the exploded structural schematic diagram of

[0035] Figure 13 It is Figure 11 the structural schematic diagram of removing the fourth module in

[0036] Figure 14 It is the three-dimensional view of the third module;

[0037] Figure 15 It is the three-dimensional view of the fourth module;

[0038] Figure 16 Schematic diagram of the assembly of the third module and the fourth module;

[0039] Figure 17 Stereogram of the current transformer after pouring is completed;

[0040] Figure 18 Schematic diagram of the structure of the coil to be poured and the mounting plate.

[0041] Explanation of reference numerals: 1, frame; 2, moving die; 3, fixed die; 4, manipulator; 5, mold; 6a / 6b, first locking rod; 7, first jack; 8a / 8b, second jack; 9a / 9b, first slot; 10a / 10b, second locking rod; 11, locking rod driving member; 12, mounting groove; 13, first mounting seat; 14, first driving member; 15, second mounting seat; 16, second driving member; 18, coil; 19, terminal; 20, mounting plate; 21, first module; 22, second module; 23, fastener; 24, accommodating cavity; 25, mounting portion; 26, pressing block; 27, third jack; 28, groove; 29, first positioning groove; 30, first positioning block; 31, third module; 32, fourth module; 33, second positioning groove; 34, second positioning block; 35, skeleton. Detailed implementation manners

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0043] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0044] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0045] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0046] Embodiment

[0047] This embodiment provides an APG transformer casting device, as Figures 1-3 shown, which includes a frame 1, a moving mold 2, a fixed mold 3, a manipulator 4, and a mold 5.

[0048] The frame 1 is provided with a moving mold 2 and a fixed mold 3. The moving mold 2 can move towards or away from the fixed mold 3 to realize mold closing or mold opening. As Figure 8 and 10 shown, both the moving mold 2 and the fixed mold 3 are formed with a plurality of installation grooves 12 that are arranged at intervals along their length and height directions and are adapted to install part or all of the mold 5. A first jack 7 communicating with the middle of the installation groove 12 is provided. As Figure 9 shown, a locking assembly is provided between the moving mold 2 and the mold 5. The locking assembly includes a first locking rod 6b, a second locking rod 10b, and a locking rod driving member 11. The second locking rod 10b moves up and down along the height direction of the moving mold 2 under the drive of the locking rod driving member 11, so as to lock or unlock with the first locking rods 6b of a plurality of molds 5. In this embodiment, there are four second locking rods 10b. The four second locking rods 10b move up and down along the height direction of the moving mold 2 under the drive of the same locking rod driving member 11, and one second locking rod 10b can cooperate with the first locking rods 6b of two molds 5 on the moving mold 2 to lock or unlock.

[0049] The manipulator 4 is used to clamp the transformer mold 5. The manipulator 4 is movably installed on the frame 1 under the action of a driving assembly. The manipulator 4 has a first position outside the moving mold 2 and the fixed mold 3, and a second position that moves between the moving mold 2 and the fixed mold 3 to assemble or disassemble the mold 5 with the moving mold 2. As Figure 4As shown, the manipulator 4 is formed with a plurality of mounting grooves 12 which are arranged at intervals along its length and height directions and are adapted to mount part or all of the molds 5. A first jack 7 communicating therewith is provided in the middle of the mounting groove 12. A locking assembly is provided between the manipulator 4 and the mold 5. The locking assembly includes a first locking rod 6a, a second locking rod 10a and a locking rod driving member 11 (not shown in the figure). As Figures 5-7 shown, there are two second locking rods 10a. The two second locking rods 10a move back and forth along the length direction of the manipulator 4 under the drive of the locking rod driving member 11, so as to lock or unlock with the first locking rods 6a of the plurality of molds 5. It should be noted that in this embodiment, a slot for inserting the second locking rod 10a is formed on the manipulator 4, and the second locking rod 10a can be inserted into the slot or withdrawn from the slot manually.

[0050] A driving assembly, adapted to drive the manipulator 4 to switch actions between the first position and the second position. As Figures 1-3 shown, the driving assembly includes a first mounting seat 13; a first driving member 14, connected to the first mounting seat 13 and adapted to drive the first mounting seat 13 to reciprocate along the width direction of the frame 1; a second mounting seat 15, slidably mounted on the first mounting seat 13, and the manipulator 4 is fixedly mounted on the second mounting seat 15; a second driving member 16, connected to the second mounting seat 15 and adapted to drive the second mounting seat 15 to reciprocate along the length direction of the frame 1. In this embodiment, the first driving member 14 is a motor, and a ball screw assembly is provided between the first driving member 14 and the first mounting seat 13. It should be noted that the ball screw assembly is a mature existing technology, so its internal structure and working principle will not be described in detail. The second driving member 16 and the locking rod driving member 11 are driven by hydraulic pressure or cylinders.

[0051] A mold 5, adapted to mount an instrument transformer. As Figure 18 shown, the instrument transformer includes a coil 18, two wiring terminals 19 connected to the coil 18 and a mounting plate 20. A skeleton 35 is provided in the middle of the coil 18. As Figure 11 and 12 shown, the mold 5 includes a first module 21, a second module 22 and a plugging block (not shown in the figure). The plugging block is adaptively mounted with the skeleton 35 and is used to plug the middle through hole of the coil instrument transformer. In this embodiment, the plugging block is made of metal material and the skeleton 35 is a plastic part. After the casting is completed, the plugging block is separated from the instrument transformer with tools.

[0052] The first module 21 has two first positioning blocks 30 and two fastening members 23 provided on its top surface. The two first positioning blocks 30 and the two fastening members 23 are respectively located at the four corners of a rectangle. In this embodiment, the fastening member 23 is a bolt.

[0053] The second module 22, asFigures 11-16 As shown, it includes a third module 31 and a fourth module 32 which are snap-fitted to each other. The third module 31 and the fourth module 32 are respectively fixed above the first module 21 by fasteners 23 and are adapted to press the mounting plate 20, such as Figures 12-14 As shown, the second module 22 has a receiving cavity 24 provided in the middle thereof, and pressing blocks 26 respectively provided on both sides in the length direction of the receiving cavity 24 and adapted to press the mounting portion 25 of the mounting plate 20. A third jack 27 or a second slot for inserting the corresponding terminal block 19 is provided on one side wall in the width direction of the receiving cavity 24. Such as Figure 16 As shown, the second module 22 has a groove 28 adjacent to the pressing block 26 and adapted to the mounting portion 25. Two first positioning grooves 29 adapted to be connected to the corresponding first positioning blocks 30 are provided on the bottom surface of the second module 22. A second positioning structure is provided between the third module 31 and the fourth module 32. The second positioning structure includes two second positioning grooves 33 provided on one of the third module 31 and the fourth module 32, and second positioning blocks 34 provided on the other and adapted to be connected to the corresponding second positioning grooves 33.

[0054] Such as Figure 11 As shown, first locking rods 6a / 6b are respectively provided on both sides of the second module 22. The first locking rods 6a / 6b are threadedly connected to the second module 22. Second jacks 8a / 8b are formed on the first locking rods 6a / 6b. Second locking rods 10a / 10b that can be adaptively inserted into the second jacks 8a / 8b are provided on the APG device.

[0055] As a transformable embodiment, first slots 9a / 9b for the corresponding insertion of the second locking rods 10a / 10b are formed on the first locking rods 6a / 6b. The first slots 9a / 9b are annular grooves recessed from the outer wall of the first locking rods 6a / 6b towards the center direction thereof.

[0056] The process of the APG transformer casting device of the present invention is as follows:

[0057] S1, Put raw materials such as epoxy resin, silica powder, and curing agent into the material tank and stir. The material tank is connected to the APG device through a material pipe;

[0058] S2, The heating pipes in the heating box heat the mold 5, and the heating temperature is 150 degrees;

[0059] S3. Install the transformer coil on the mold 5, then fix the mold 5 on the manipulator 4 (at this time, the manipulator 4 is in the first position). The second locking rod 10a of the manipulator and the first locking rod 6a of the mold 5 remain in the locked state. Finally, the manipulator 4 moves from the first position to the second position, and transfers the mold 5 to the moving mold 2. During this process, the second locking rod 10b of the moving mold 2 and the first locking rod 6b of the mold 5 remain in the locked state, the second locking rod 10a of the manipulator and the first locking rod 6a of the mold 5 are unlocked, and the manipulator 4 moves from the second position to the first position;

[0060] S4. Close the mold and inject the material. The injection pressure is 0.4 - 0.5 Mpa, and the injection time is 3 - 4 minutes;

[0061] S5. After the injection is completed, perform pressure holding. The pressure holding pressure is 0.4 - 0.5 Mpa, and the time is 4 - 5 minutes;

[0062] S6. After the pressure holding time ends, open the mold. The manipulator 4 takes out the processed transformer. During the process of the manipulator 4 taking out the mold 5, the second locking rod 10a of the manipulator and the first locking rod 6a of the mold 5 are locked, and the second locking rod 10b of the moving mold 2 and the first locking rod 6b of the mold 5 are unlocked.

[0063] The APG transformer casting equipment provided by the present invention includes a frame 1, a moving mold 2, a fixed mold 3, and a manipulator 4. The manipulator 4 is adapted to hold the transformer mold 5. It has a first position outside the moving mold 2 and the fixed mold 3, and a second position that moves between the moving mold 2 and the fixed mold 3 to assemble or disassemble the mold 5 with the moving mold 2. That is, when in the first position outside the frame 1, the operator can install the transformer mold or disassemble the cast transformer mold. Compared with the prior art, such operation is safer and can avoid personnel injury.

[0064] Obviously, the above - mentioned embodiments are only examples clearly described and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. An APG current transformer casting device, characterized in that, it includes: a frame (1); a moving mold (2) and a fixed mold (3), which are arranged on the frame (1), and the moving mold (2) can move towards or away from the fixed mold (3) to realize mold closing or mold opening; a manipulator (4), which is movably installed on the frame (1) and is suitable for clamping the current transformer mold (5). The manipulator (4) has a first position outside the moving mold (2) and the fixed mold (3), and a second position where it moves between the moving mold (2) and the fixed mold (3) to assemble or disassemble the mold (5) with the moving mold (2); locking components that can be cooperated with the mold (5) to lock or unlock are provided on both the manipulator (4) and the moving mold (2); mounting grooves (12) suitable for installing part or all of the mold (5) are formed on the manipulator (4), the moving mold (2) and the fixed mold (3); The locking component includes: a first locking rod (6a; 6b), which is respectively arranged on both sides of the mold (5) and can be inserted into the first jack (7) of the manipulator (4), the moving mold (2) and the fixed mold (3). A second jack (8a; 8b) or a first slot (9a; 9b) is formed on the first locking rod (6a; 6b); a second locking rod (10a; 10b), which is arranged on the manipulator (4) and the moving mold (2), and the second locking rod (10a; 10b) is suitable for being inserted and connected with the second jack (8a; 8b) or the first slot (9a; 9b) in a matching manner; a locking rod driving member (11), which is connected to the second locking rod (10a; 10b) and is suitable for driving the second locking rod (10a; 10b) to cooperate with the first locking rod (6a; 6b) to lock or unlock.

2. The APG current transformer casting device according to claim 1, characterized in that, the second locking rod (10a; 10b) extends along the length direction or height direction of the manipulator (4) and the moving mold (2), and one second locking rod (10a; 10b) can lock or unlock with the first locking rods (6a; 6b) of multiple molds (5).

3. The APG current transformer casting device according to claim 1, characterized in that, the first locking rod (6a; 6b) is threadedly connected to the mold (5).

4. The APG current transformer casting device according to any one of claims 1-3, characterized in that, the first slot (9a; 9b) is an annular groove that is recessed from the outer wall of the first locking rod (6a; 6b) towards its center.

5. The APG current transformer casting device according to claim 1, characterized in that, there are multiple mounting grooves (12), and the multiple mounting grooves (12) are spaced along the length direction and / or height direction of the manipulator (4), the moving mold (2) and the fixed mold (3).

6. The APG current transformer casting device according to claim 1, characterized in that, it further includes a driving component suitable for driving the manipulator (4) to switch actions between the first position and the second position. The driving component includes: The first mounting seat (13); The first driving member (14), which is connected to the first mounting seat (13) and is adapted to drive the first mounting seat (13) to reciprocate in the width direction of the frame (1); The second mounting seat (15), which is slidably mounted on the first mounting seat (13), and the manipulator (4) is fixedly mounted on the second mounting seat (15); The second driving member (16), which is connected to the second mounting seat (15) and is adapted to drive the second mounting seat (15) to reciprocate in the length direction of the frame (1).

7. A process of an APG transformer casting device Characterized in that The APG transformer casting device according to any one of claims 1-6 is adopted, and the following steps are included: S1, Put the raw materials into the material tank and stir, and the material tank is connected to the APG device through a material pipe; S2, Heat the mold (5) in the heating box, and the heating temperature is 150 degrees; S3, Install the transformer coil on the mold (5), then fix the mold (5) on the manipulator (4), and finally the manipulator (4) transfers the mold (5) to the moving mold (2); S4, Close the mold and inject the material, the injection pressure is 0.4-0.5 Mpa, and the injection time is 3-4 minutes; S5, After the injection is completed, carry out pressure holding, the pressure holding pressure is 0.4-0.5 Mpa, and the time is 4-5 minutes; S6, After the pressure holding time is up, open the mold, and the manipulator (4) takes out the processed transformer.

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