Coil hot pressing forming device

Abstract

The present invention provides a coil hot pressing forming device, comprising: a workbench; a sliding assembly, comprising a slide rail fixed on the workbench and a slide seat covering the slide rail, a heat insulation plate and a push plate for placing the coil are fixed on the slide seat from bottom to top in sequence; a hot pressing die, arranged above the push plate, the hot pressing die comprises a left hot pressing die, a right hot pressing die and a hot pressing bottom plate, the left hot pressing die and the right hot pressing die are provided with a receiving cavity for placing the coil, and a self-elastic device for resetting the hot pressing die is provided above the left hot pressing die and the right hot pressing die; a fixed seat, comprising an upper fixed seat, a left fixed seat and a right fixed seat; a driving assembly, comprising a driving device 2 and a push plate, the driving device 2 is fixed on the upper fixed seat and the output shaft of the driving device 2 is connected to the push plate, the push plate is driven by the driving device 2, and the left hot pressing die and the right hot pressing die are pushed close to the hot pressing bottom plate. The present invention has the characteristics of reasonable design and good coil hot pressing curing effect.

Description

Technical Field

[0001] The invention belongs to the technical field of motor coils and relates to a coil hot pressing forming device. Background Art

[0002] Winding is a key component of the motor. The life and operating reliability of the motor mainly depend on the manufacturing quality of the winding. The selection of insulation materials and structures, and the quality of insulation treatment during coil manufacturing are key factors affecting the manufacturing quality of the winding. The insulation between the turns of the molded coil needs to be hot-molded and gelled so that the turns are neatly bonded into a whole and obtain precise external dimensions. How to achieve this function simply and efficiently requires the design of special hot-pressing molding equipment for this type of coil.

[0003] The structure of the conventional armature winding forming coil is similar to a boat shape with a large pitch across the slots. However, for the armature winding forming coil with a small pitch across the slots (generally pitch y=1) and a special racetrack shape, the hot pressing device in the prior art cannot achieve hot pressing and curing of this type of coil.

[0004] In summary, in order to solve the structural deficiencies of the existing hot pressing forming equipment for this type of coil, the present invention designs a coil hot pressing forming device with reasonable design and good coil hot pressing curing effect. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the invention provides a coil hot pressing forming device with reasonable design and good coil hot pressing curing effect.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A coil hot pressing forming device, comprising:

[0008] Workbench;

[0009] The sliding assembly comprises a sliding rail fixed on the workbench and a sliding seat covering the sliding rail, and a heat insulation plate and a push plate for placing the coil are fixed on the sliding seat in sequence from bottom to top;

[0010] A hot pressing die is arranged above the push plate, and the hot pressing die includes a left hot pressing die, a right hot pressing die and a hot pressing bottom plate. The left hot pressing die and the right hot pressing die are provided with a receiving cavity for placing the coil, and a self-elastic device for resetting the hot pressing die is provided above the left hot pressing die and the right hot pressing die;

[0011] A fixed seat, comprising an upper fixed seat, a left fixed seat and a right fixed seat, wherein one end of the left fixed seat is fixed to the workbench, and the other end is fixed to the upper fixed seat, and an inner wall is provided with a cast aluminum heating plate and a left heat insulation plate; one end of the right fixed seat is fixed to the workbench, and the other end is fixed to the upper fixed seat, and an inner wall is provided with a cast aluminum heating plate and a right heat insulation plate, and the right heat insulation plate is driven by a driving device fixed to the right fixed seat to move longitudinally along the workbench, and the left hot pressing mold and the right hot pressing mold are fitted;

[0012] The driving assembly includes a second driving device and a push plate, wherein a second heat insulation plate is provided at the end of the push plate, the second driving device is fixed on the upper fixed seat and the output shaft of the second driving device is connected to the push plate, and the push plate is driven by the second driving device to push the left hot pressing mold and the right hot pressing mold close to the hot pressing bottom plate.

[0013] As a further improvement, the self-elastic device includes a washer, a chrome-plated rod and a spring, an upper fixing sleeve is sleeved on the washer, the spring is sleeved on the lower part of the chrome-plated rod and a cylinder sleeve is arranged outside the spring, a linear bearing is arranged between the cylinder sleeve and the chrome-plated rod, and a top block is arranged at the end of the spring. The linear bearing allows the cylinder sleeve to rotate 360 ​​degrees without getting stuck during use.

[0014] As a further improvement, the self-elastic device is slidably fixed to the upper fixed seat via a slider, and a guide rail is provided between the slider and the upper fixed seat.

[0015] As a further improvement, a side thrust structure and a side thrust plate are provided between the output shaft of the driving device 1 and the right side insulation plate. A number of reinforcing ribs are evenly distributed around the side thrust structure, and a number of insulation grooves are provided on the surface of the side thrust plate 71 close to the right side insulation plate.

[0016] As a further improvement, a cooling fan is also provided on the upper fixed seat and the cooling fan is located directly above the hot pressing mold.

[0017] As a further improvement, the first driving device is a cylinder, and the second driving device is a cylinder.

[0018] As a further improvement, the insulation board 1 and the insulation board 2 are both aluminum silicate ceramic fiber insulation boards.

[0019] As a further improvement, a plurality of heat insulation grooves are provided on a side of the heat insulation plate 2 away from the push plate.

[0020] Compared with the prior art, the present invention has a reasonable structural design. The left hot pressing mold and the right hot pressing mold are pressed in the up and down and left and right directions through the driving device 1 and the driving device 2. The self-elastic device realizes the automatic adjustment of the hot pressing mold in the up and down directions, and it can slide in the left and right directions, which saves the time of the upper and lower hot pressing mold plates, reduces the operation intensity of workers, and improves the hot pressing efficiency. In addition, the side push structure and the lower pressure plate are provided with heat dissipation grooves, which can reduce the heat transfer to the cylinder and protect the cylinder. The thermal insulation material is aluminum silicate ceramic fiber, which fully wraps the non-heating contact surface of the heating plate and has a good thermal insulation effect. The above is conducive to the smooth hot pressing curing of the coil. The coil hot pressing molding device has good versatility, simple maintenance, easy use, and high production efficiency, which can effectively ensure the production quality of the coil hot pressing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of a coil hot pressing forming device of the present invention;

[0022] Figure 2 It is a left side view of the coil hot pressing forming device of the present invention;

[0023] Figure 3 is a cross-sectional view of a self-elastic device of a coil hot pressing forming device of the present invention;

[0024] Figure 4 It is a schematic structural diagram of a workbench of a coil hot pressing forming device of the present invention;

[0025] Figure 5 It is a front view of the side push structure and the side push plate of the coil hot pressing forming device of the present invention;

[0026] Figure 6 It is a top view of a side push structure and a side push plate of a coil hot pressing forming device of the present invention;

[0027] Figure 7 It is a front view of the cast aluminum heating plate of the coil hot pressing forming device of the present invention;

[0028] Figure 8 It is a top view of the cast aluminum heating plate of the coil hot pressing forming device of the present invention;

[0029] In the figure, 10-workbench, 11 supporting leg, 20-sliding assembly, 21-slide rail, 22-slide seat, 23-insulation board 1, 24-push plate, 30-hot pressing mold, 31-left hot pressing mold, 32-right hot pressing mold, 33-hot pressing bottom plate, 34-accommodating cavity, 40-self-elastic device, 41-washer, 42-chrome-plated rod, 43-spring, 44-fixing sleeve, 45-cylinder sleeve, 46-top block, 47-bearing, 48-slider, 49-guide rail, 5 0-fixed seat, 51-upper fixed seat, 52-left fixed seat, 53-right fixed seat, 54-cast aluminum heating plate, 55-driving device one, 56-left insulation board, 57-cast aluminum heating plate, 571-heating tube, 572-terminal, 573-temperature probe, 58-right insulation board, 60-driving assembly, 61-driving device two, 62-push plate, 63-insulation board two, 70-side thrust structure, 71-side thrust plate, 80-cooling fan. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described below in conjunction with the embodiments and drawings.

[0031] like Figures 1 to 8 As shown, the coil hot pressing forming device comprises:

[0032] Example 1

[0033] A workbench 10, with support legs 11 disposed below it;

[0034] The sliding assembly 20 includes a slide rail 21 fixed on the workbench 10 and a slide seat 22 covering the slide rail 21, and a heat insulation plate 23 and a push plate 24 for placing the coil are fixed on the slide seat 22 in sequence from bottom to top;

[0035] The hot pressing mold 30 is arranged above the push plate 24. The hot pressing mold 30 includes a left hot pressing mold 31, a right hot pressing mold 32 and a hot pressing bottom plate 33. The left hot pressing mold 31 and the right hot pressing mold 32 are provided with a receiving cavity 34 for placing the coil. The left hot pressing mold 31 and the right hot pressing mold 32 are provided with a self-elastic device 40 for resetting the hot pressing mold above.

[0036] The fixed seat 50 includes an upper fixed seat 51, a left fixed seat 52 and a right fixed seat 53. One end of the left fixed seat 52 is fixed to the workbench 10, and the other end is fixed to the upper fixed seat 51, and the inner side wall is provided with a cast aluminum heating plate 54 and a left heat insulation plate 56; one end of the right fixed seat 53 is fixed to the workbench 10, and the other end is fixed to the upper fixed seat 51, and the inner side wall is provided with a cast aluminum heating plate 57 and a right heat insulation plate 58, and the right heat insulation plate 58 is driven by a driving device 55 fixed to the right fixed seat 53 to move along the longitudinal direction of the workbench 10, and the left hot pressing mold 31 and the right hot pressing mold 32 are fitted;

[0037] The driving assembly 60 includes a second driving device 61 and a push plate 62. A second heat insulation plate 63 is provided at the end of the push plate 62. The second driving device 61 is fixed on the upper fixed seat 51 and the output shaft of the second driving device 61 is connected to the push plate 62. The push plate 62 is driven by the second driving device 61 to push the left hot pressing mold 31 and the right hot pressing mold 32 close to the hot pressing bottom plate 33.

[0038] Winding is a key component of the motor. The life and operating reliability of the motor mainly depend on the manufacturing quality of the winding. The selection of insulation materials and structures, and the quality of insulation treatment during coil manufacturing are key factors affecting the manufacturing quality of the winding. The insulation between the turns of the molded coil needs to be hot-molded and gelled so that the turns are neatly bonded into a whole and obtain precise external dimensions. How to achieve this function simply and efficiently requires the design of special hot-pressing molding equipment for this type of coil.

[0039] The structure of the conventional armature winding forming coil is similar to a boat shape with a large pitch across the slots. However, for the armature winding forming coil with a small pitch across the slots (generally pitch y=1) and a special racetrack shape, the hot pressing device in the prior art cannot achieve hot pressing and curing of this type of coil.

[0040] To this end, the present invention designs a coil hot pressing forming device, through the setting of a sliding component 20, wherein the sliding component 20 includes a slide rail 21 fixed on the workbench 10 and a slide seat 22 covering the slide rail 21, and a heat insulation plate 23 and a push plate 24 for placing the coil are fixed on the slide seat 22 from bottom to top. The push plate 24 slides horizontally along the workbench 10, and can complete the placement, feeding, and removal of the coil after hot pressing and curing, which is easy to operate.

[0041] The output shaft of the driving device 55 is fixed to the right heat insulation plate 58. The driving device 55 drives the right heat insulation plate 58 to move along the longitudinal direction of the workbench 10, pushing it to the left so that the right hot pressing mold 32 is fitted with the left hot pressing mold 31, and the coil in the accommodating cavity 34 is fitted and pressed tightly with the right hot pressing mold 32 and the left hot pressing mold 31.

[0042] A self-elastic device is provided above the hot pressing mold 30 and is slidably fixed to the upper fixed seat 51. When in the original position, the contact surfaces of the left hot pressing mold 31 and the right hot pressing mold 32 in the hot pressing mold 30 are away from the hot pressing bottom plate 33. The left hot pressing mold 31 and the right hot pressing mold 32 are pushed by the driving device 2 61 and the push plate 62, so that the left hot pressing mold 31 and the right hot pressing mold 32 are close to the workbench 10, and finally the left hot pressing mold 31 and the right hot pressing mold 32 are pushed to fit the hot pressing bottom plate 33.

[0043] As shown in the figure, the cast aluminum heating plate 57 is provided with heating tubes 571 , which are evenly distributed on the cast aluminum heating plate 57 , and the side of the cast aluminum heating plate 57 is provided with terminal posts 572 and temperature measuring probes 573 .

[0044] The above operation makes the racetrack-shaped coil compacted and tightly attached in the hot pressing mold, and then the racetrack-shaped coil is cured at high temperature by the cast aluminum heating plate 57, and the two sides of the mold are heated at the same time, the heating rate is fast, and the heat transfer is uniform. Compared with the prior art, the hot pressing molding device of the present invention effectively realizes the high-temperature curing of the racetrack-shaped coil.

[0045] Example 2

[0046] Embodiment 2 is substantially the same as Embodiment 1, except that:

[0047] The self-elastic device 40 is slidably fixed to the upper fixed seat 51 , and the sliding fixing method is that the self-elastic device 40 can slide along the longitudinal direction of the upper fixed seat 51 through the slider and the slide rail.

[0048] As a further preferred embodiment, the self-elastic device 40 includes a washer 41, a chrome-plated rod 42 and a spring 43, wherein an upper fixing sleeve 44 is sleeved on the washer 41, the spring 43 is sleeved on the lower part of the chrome-plated rod 42 and a cylinder sleeve 45 is provided outside the spring 43, a linear bearing 47 is provided between the cylinder sleeve 45 and the chrome-plated rod 42, and a top block 46 is provided at the end of the spring. The cylinder sleeve 45 is fixed to the upper surface of the left hot pressing mold 31, and the cylinder sleeve 45 is fixed to the upper surface of the right hot pressing mold 32. The linear bearing allows the cylinder sleeve to rotate 360°, and will not get stuck during use.

[0049] As a further preferred embodiment, the self-elastic device 40 is fixed by sliding between the slider 48 and the upper fixed seat 51, and a guide rail 49 is provided between the slider 48 and the upper fixed seat 51. This arrangement allows the right hot pressing mold 32 to slide freely in the left and right directions, effectively saving the time of the upper and lower hot pressing mold plates.

[0050] In the non-working state, the left hot pressing mold 31 and the right hot pressing mold 32 are under the action of the self-elastic device 40, that is, the internal spring is in a contracted state, and the left and right hot pressing molds are away from the hot pressing bottom plate 33;

[0051] In the working state, that is, when the coil is hot-pressed and cured, the left hot-pressing mold 31 and the right hot-pressing mold 32 are pushed toward the workbench 10 by the second driving device 61, and the spring 43 is in a stretched state. Finally, the left hot-pressing mold 31 and the right hot-pressing mold 32 are fitted to the hot-pressing bottom plate 33, and the coil is tightly arranged in the accommodating cavity 34 of the hot-pressing mold 30. After the hot-pressing is completed, the second driving device 61 moves away from the workbench 10. Under the action of the self-elastic device 40, the left hot-pressing mold 31 and the right hot-pressing mold 32 are away from the hot-pressing bottom plate 33, the spring is reset, and the driving device 1 55 drives the right heat insulation board 58 away from the right hot-pressing mold 32, so that the staff can smoothly take out the pressurized and cured coil.

[0052] In this embodiment, by setting the self-elastic device 40, the right hot pressing mold 32 can be automatically adjusted in the upper and lower directions, and can slide in the left and right directions, saving the time of the upper and lower hot pressing mold plates, reducing the operating intensity of workers, and improving the hot pressing efficiency.

[0053] Example 3

[0054] Embodiment 3 is substantially the same as Embodiment 2, with the only difference being that a side thrust structure 70 and a side thrust plate 71 are provided between the output shaft of the driving device 55 and the right heat insulation plate 58, a plurality of reinforcing ribs 72 are evenly distributed around the side thrust structure 70, and a plurality of heat insulation grooves 73 are provided on the surface of the side thrust plate 71 close to the right heat insulation plate 58.

[0055] In this embodiment, since the sealing rubber plug of the driving device 55 is prone to aging and failure under high temperature conditions, a plurality of insulation grooves 73 are provided on the surface of the side thrust plate 71 close to the right insulation plate 58, which has a good insulation effect. The thermal conductivity of air is much lower than that of iron, which effectively increases the service life of the entire equipment and facilitates the long-term use of the hot pressing molding device.

[0056] The side thrust structure and the lower pressure plate of the linkage device are both provided with a heat insulation groove 73, which can reduce the heat transfer to the cylinder and protect the cylinder. The setting of the heat insulation groove 73 can protect the cylinder. Since the temperature is controlled at about 170° during operation, the heating time is 15 to 20 minutes, and the heat dissipation is 3 to 5 minutes, the service life of the cylinder is improved. The cylinder has a heat resistance grade, and the sealing plug has temperature requirements. Under long-term high temperature, the rubber is prone to aging and failure. The reinforcing ribs enhance the mechanical strength and mechanical strength of the side thrust plate to prevent deformation due to long-term use. During specific operations, the hot pressing curing temperature is 170° and the hot pressing time is 15 to 20 minutes. In the above process, if the drive device 55 is under high temperature for a long time, it will affect the later use. The setting of the heat insulation groove 73 effectively avoids the aging of the sealing rubber plug.

[0057] Example 4

[0058] Embodiment 4 is substantially the same as Embodiment 3, with the only difference being that a cooling fan 80 is further disposed on the upper fixing seat 51 and the cooling fan 80 is located directly above the hot pressing mold 30 .

[0059] The cooling fan 80 is fixed between the two upper fixing seats 4, that is, located directly above the hot pressing mold 30, with the wind direction facing the hot pressing mold. When the hot pressing curing temperature is 170° and the hot pressing time is 15 to 20 minutes, the cooling fan 19 can be turned on to achieve rapid cooling of the cured coil. After cooling, the coil is taken out to complete the final operation, which is convenient for the staff to operate and improves efficiency.

[0060] Example 5

[0061] Embodiment 5 is substantially the same as Embodiment 4, with the only difference being that the driving device 1 55 is a cylinder and the driving device 2 61 is a cylinder.

[0062] In this embodiment, a hot pressing mold self-elastic device is provided, which can realize automatic adjustment in the up and down directions and can slide in the left and right directions, saving time for the upper and lower hot pressing mold plates, reducing the operation intensity of workers, and improving the hot pressing efficiency. The cylinder is used as a driving device, which is easy to operate during use and convenient for manual control.

[0063] Example 6

[0064] Embodiment 6 is substantially the same as Embodiment 7, except that the insulation board 23 is an aluminum silicate ceramic fiber insulation board. The thermal conductivity of this material is extremely low, and the aluminum silicate ceramic fiber insulation board has a good thermal insulation effect.

[0065] The coil hot pressing forming device has a reasonable structural design. The hot pressing mold can be automatically adjusted in the upper and lower directions through the driving device 1, the driving device 2 and the self-elastic device. It can slide in the left and right directions, which saves the time of the upper and lower hot pressing mold plates, reduces the operation intensity of workers, and improves the hot pressing efficiency. In addition, the side push structure and the lower pressing plate are provided with heat dissipation grooves, which can reduce the heat transfer to the cylinder and protect the cylinder. The thermal insulation material is aluminum silicate ceramic fiber, which fully wraps the non-heating contact surface of the heating plate and has a good thermal insulation effect. The above is conducive to the smooth hot pressing curing of the coil. The coil hot pressing forming device has good versatility, simple maintenance, easy use, and high production efficiency, and can effectively ensure the production quality of the coil hot pressing process.

[0066] The preferred embodiments of the present invention are described herein, but the protection scope of the present invention is not limited thereto. Any modification or supplement or replacement of the specific embodiments described by those skilled in the art shall be included in the protection scope of the present invention.

Claims

1. A coil hot pressing forming device, characterized in that: include: Workbench (10); The sliding assembly (20) comprises a sliding rail (21) fixedly mounted on the workbench (10) and a sliding seat (22) covering the sliding rail (21), wherein a heat insulation plate (23) and a push plate (24) for placing a coil are fixedly mounted on the sliding seat (22) in order from bottom to top; A hot pressing die (30) is arranged above the push plate (24), the hot pressing die (30) comprising a left hot pressing die (31), a right hot pressing die (32) and a hot pressing bottom plate (33), a receiving cavity (34) for placing the coil is provided in the left hot pressing die (31) and the right hot pressing die (32), and a self-elastic device (40) for resetting the hot pressing die is provided above the left hot pressing die (31) and the right hot pressing die (32); A fixed seat (50) comprises an upper fixed seat (51), a left fixed seat (52) and a right fixed seat (53); one end of the left fixed seat (52) is fixed to the workbench (10), and the other end is fixed to the upper fixed seat (51), and the inner side wall is provided with a cast aluminum heating plate (54) and a left heat insulation plate (56); one end of the right fixed seat (53) is fixed to the workbench (10), and the other end is fixed to the upper fixed seat (51), and the inner side wall is provided with a cast aluminum heating plate (57) and a right heat insulation plate (58), and the right heat insulation plate (58) is driven by a driving device (55) fixed to the right fixed seat (53) to move longitudinally along the workbench (10), so that the left hot pressing mold (31) and the right hot pressing mold (32) are fitted together; The driving assembly (60) comprises a second driving device (61) and a second pushing plate (62), wherein a second heat insulation plate (63) is provided at the end of the second pushing plate (62), the second driving device (61) is fixed on the upper fixing seat (51) and the output shaft of the second driving device (61) is connected to the second pushing plate (62), and the second pushing plate (62) is driven by the second driving device (61) to push the left hot pressing mold (31) and the right hot pressing mold (32) close to the hot pressing bottom plate (33); The self-elastic device (40) is slidably fixed to the upper fixed seat (51) via a slider (48), and a guide rail (49) is provided between the slider (48) and the upper fixed seat (51); When in a non-working state, the left hot pressing mold (31) and the right hot pressing mold (32) are under the action of the self-elastic device (40), i.e., the internal springs are in a contracted state, and the left and right hot pressing molds are away from the hot pressing bottom plate (33); In the working state, that is, when the coil is hot-pressed and cured, the left hot-pressing mold (31) and the right hot-pressing mold (32) are pushed toward the workbench (10) by the second driving device (61), and the spring (43) is in a stretched state. Finally, the left hot-pressing mold (31) and the right hot-pressing mold (32) are fitted to the hot-pressing bottom plate (33), and the coil is tightly arranged in the accommodating cavity (34) of the hot-pressing mold (30); after the hot-pressing is completed, the second driving device (61) moves in a direction away from the workbench (10), and under the action of the self-elastic device (40), the left hot-pressing mold (31) and the right hot-pressing mold (32) are moved away from the hot-pressing bottom plate (33), the spring is reset, and the first driving device (55) drives the right heat insulation board (58) away from the right hot-pressing mold (32), so that the staff can smoothly take out the coil after pressurization and curing; The self-elastic device (40) comprises a washer (41), a chrome-plated rod (42) and a spring (43); an upper fixing sleeve (44) is sleeved on the washer (41); the spring (43) is sleeved on the lower part of the chrome-plated rod (42) and a cylinder sleeve (45) is provided outside the spring (43); a linear bearing (47) is provided between the cylinder sleeve (45) and the chrome-plated rod (42); and a top block (46) is provided at the end of the spring.

2. A coil hot pressing forming device according to claim 1, characterized in that: A side thrust structure (70) and a side thrust plate (71) are provided between the output shaft of the driving device 1 (55) and the right heat insulation plate (58); a plurality of reinforcing ribs (72) are evenly distributed around the side thrust structure (70); and a plurality of heat insulation grooves (73) are provided on the surface of the side thrust plate (71) in close contact with the right heat insulation plate (58).

3. The coil hot pressing forming device according to claim 1, characterized in that: A cooling fan (80) is also provided on the upper fixing seat (51), and the cooling fan (80) is located directly above the hot pressing mold (30).

4. The coil hot pressing forming device according to claim 1, characterized in that: The driving device 1 (55) is a cylinder, and the driving device 2 (61) is a cylinder.

5. The coil hot pressing forming device according to claim 1, characterized in that: The insulation board 1 (23) and the insulation board 2 (63) are both aluminum silicate ceramic fiber insulation boards.

6. The coil hot pressing forming device according to claim 1, characterized in that: A plurality of heat insulation grooves (73) are provided on a side of the second heat insulation plate (63) away from the second push plate (62).

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