Stator coil drying and pressing equipment

Abstract

The present invention relates to a drying and pressing device for stator coils, comprising an equipment frame, a clamping mechanism and a heating mechanism arranged on the equipment frame, the clamping mechanism having a drying and pressing cavity for placing a plurality of stator coils, the clamping mechanism comprising a first side plate and a second side plate located on both sides and movably on a support platform of the equipment frame, a core plate located between the first side plate and the second side plate, the drying and pressing cavity being formed between the first side plate and the second side plate and the core plate, the first side plate and the second side plate being able to move towards and away from each other, the clamping mechanism further comprising a pushing assembly and a pressing assembly; the drying and pressing device changes the inefficient state of traditional processing technology in which only one coil can be dried and pressed at a time, and adjusts the drying and pressing timing to before the coil is stretched, that is, the coil is dried and pressed when it is in a shuttle-shaped state, and more than 20 coils can be dried and pressed at a time, thereby improving the efficiency of coil drying and pressing by more than 10 times, greatly reducing the processing time of frame-shaped coils, and improving production efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of special winding wires, and in particular relates to a stator coil drying and pressing device. Background Art

[0002] The stator coil is the core component of the motor, and large and medium-sized stators usually use frame coils. In the processing and production of frame coils, forming the shuttle coil into a frame coil of specified size is a key step, which directly affects whether the frame coil can be smoothly embedded in the stator core slot.

[0003] The traditional manufacturing process for frame coils is as follows: winding (to form a shuttle coil) → initial wrapping → drawing → shaping → drying and pressing → insulation wrapping. Existing frame coil processing suffers from low production efficiency, as only one coil can be dried and pressed at a time. After drawing, a shaping step is often required to ensure a consistent shape for each coil after drying and pressing. The drying and pressing step primarily heat-presses and solidifies the inter-turn insulation of the wound coils, ensuring proper dimensions after assembly. Drying and pressing is the longest process in the entire frame stator coil manufacturing process. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a stator coil drying and pressing device.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is:

[0006] A drying and pressing device for a stator coil comprises an equipment frame, a clamping mechanism and a heating mechanism arranged on the equipment frame, the clamping mechanism having a drying and pressing cavity for placing a plurality of stator coils, the clamping mechanism comprising a first side plate and a second side plate which are located on both sides and are movable on a support platform of the equipment frame, a core plate located between the first side plate and the second side plate, the drying and pressing cavity being formed between the first side plate and the second side plate and the core plate, the first side plate and the second side plate being able to move towards and away from each other, the clamping mechanism also comprising a pushing assembly for driving the first side plate or the second side plate to move, and a pressing assembly for pressing the stator coil from above after the stator coil is loaded into the drying and pressing cavity.

[0007] Preferably, the plurality of stator coils are sequentially distributed in the vertical direction in the drying chamber.

[0008] Preferably, in the up-down direction, two adjacent stator coils are separated by a strip.

[0009] Preferably, the heating mechanism includes a first heat exchange coil embedded in the first side plate and the second side plate, and the first heat exchange coil is connected to an external heat source and a cold source.

[0010] Preferably, the heating mechanism further comprises a second heat exchange coil embedded in the core plate, and the second heat exchange coil is connected to an external heat source and a cold source.

[0011] Preferably, the equipment rack includes a first stand and a second stand fixed on its support platform, the first stand is located on the side of the first side plate away from the core plate, and the second stand is located on the side of the second side plate away from the core plate.

[0012] Preferably, the pushing assembly includes a plurality of first telescopic cylinders arranged on the first stand, and the power output shafts of the plurality of first telescopic cylinders are fixedly arranged on the first side plate.

[0013] Preferably, the pressing assembly includes two bars pressing against the stator coil, a plurality of pressing plates distributed along the length direction of the bars, and a power assembly pressing against the pressing plates.

[0014] Preferably, the power assembly includes a rotating arm with a middle portion rotatably arranged relative to the first stand, a second telescopic cylinder driving one end of the rotating arm to move up and down, and the other end of the rotating arm can press against the pressure plate.

[0015] Preferably, an adjustment pad is placed between the second stand and the second side plate.

[0016] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0017] The stator coil drying and pressing equipment of the present invention changes the inefficient state of the traditional processing technology in which only one coil can be dried and pressed at a time. The drying and pressing timing is adjusted to before the coil is stretched, that is, the coil is dried and pressed when it is in a shuttle-shaped state. More than 20 coils can be dried and pressed at a time, thereby increasing the coil drying and pressing efficiency by more than 10 times, greatly reducing the processing time of the frame-shaped coil and improving production efficiency.

[0018] In addition, since the straight part of the coil is shaped and pressed when the coil is still in the shuttle-shaped state, the shape of multiple coils can be kept consistent after the coil is stretched, so that the shaping step can be eliminated in the processing and production of the frame-shaped coil, saving processes and labor. At the same time, it also eliminates the probability of insulation damage caused by shaping of the coil, reducing quality risks in the product processing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic side view of the structure of the present invention is a drying and pressing device;

[0020] Figure 2 A schematic top view of the structure of the baking and pressing equipment of the present invention;

[0021] Among them: 100, stator coil; 101, strip plate; 200, connecting pipe; 21, first telescopic cylinder; 22, adjusting pad; 31, second telescopic cylinder; 32, rotating arm; 33, pressing plate; 34, strip block; b1, first side plate; b2, second side plate; b3, core plate; j1, first stand; j2, second stand. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0023] like Figure 1 As shown, a drying and pressing device for a stator coil includes an equipment frame, a clamping mechanism and a heating mechanism arranged on the equipment frame, the clamping mechanism has a drying and pressing cavity for placing a plurality of stator coils 100, the clamping mechanism includes a first side plate b1 and a second side plate b2 which are located on both sides and are movable on a support platform of the equipment frame, and a core plate b3 located between the first side plate b1 and the second side plate b2. In this example, the core plate b3 is independently movable, and the drying and pressing cavity is formed between the first side plate b1 and the second side plate b2 and the core plate b3. The first side plate b1 and the second side plate b2 can move closer to and away from each other. The clamping mechanism also includes a pushing assembly for driving the first side plate b1 to move, and a pressing assembly for pressing the stator coil 100 from above after the stator coil 100 is loaded into the drying and pressing cavity.

[0024] Multiple stator coils 100 are distributed in sequence along the vertical direction in the drying and pressing chamber; in the vertical direction, adjacent stator coils 100 are separated by strips 101; multiple stator coils 100 can be arranged vertically in the drying and pressing chamber. In this example, the height of the drying and pressing chamber can accommodate more than 20 coils for drying and pressing at a time, thereby increasing the efficiency of coil drying and pressing by more than 10 times, greatly reducing the processing time of frame-shaped coils, and improving production efficiency.

[0025] In this example, the heating mechanism includes a first heat exchange coil buried in the first side plate b1 and the second side plate b2, and the heating mechanism also includes a second heat exchange coil buried in the core plate b3. The first coil and the second coil are arranged inside the first side plate b1 and the second side plate b2, so they are not shown in the figure. In addition, the first heat exchange coil and the second heat exchange coil are connected to the external heat source and cold source through the connecting pipe 200.

[0026] Furthermore, the equipment rack includes a first stand j1 and a second stand j2 fixed on its support platform. The first stand j1 is located on the side of the first side panel b1 away from the core panel b3, and the second stand j2 is located on the side of the second side panel b2 away from the core panel b3.

[0027] The push assembly includes multiple first telescopic cylinders 21 mounted on the first upright j1. The power output shafts of these first telescopic cylinders 21 are fixed to the first side plate b1. There are six first telescopic cylinders 21, divided into two groups of three and spaced apart along the length of the coil. The three cylinders in a group are arranged vertically.

[0028] The pressing assembly comprises two bars 34 that press against the stator coil 100, two pressure plates 33 distributed along the length of the bars 34, and two power assemblies that respectively press against the two pressure plates 33. The power assembly comprises a rotating arm 32, the center of which is rotatably mounted relative to the first stand j1, and a second telescopic cylinder 31 that drives one end of the rotating arm 32 up and down. The other end of the rotating arm 32 is capable of pressing against the pressure plates 33. Furthermore, the end of the rotating arm 32 that connects to the second telescopic cylinder 31 can be detached from the telescopic rod, and the rotating arm 32 can also rotate horizontally. During loading and unloading, the rotating arm 32 can be rotated to one side to avoid obstruction.

[0029] In addition, an adjustment pad 22 is placed between the second stand j2 and the second side plate b2.

[0030] The drying and pressing equipment of the stator coil 100 of the present invention is used as follows: the shuttle-shaped stator coils 100 are placed into the drying and pressing chamber one by one, and adjacent stator coils 100 should be separated by strips 101. After all the stator coils 100 are placed, two strips 101 are placed on the upper side of the top stator coil 100, and the strip block 34 is placed above the strip 101. Before using the pressing assembly to press, the positions of the first side plates b1 and the second side plates b2 on both sides are adjusted first to ensure that the stator coil 100 is located at the center position of the downward pressure of the rotating arm 32. During subsequent pressing, the pressure of the stator coil 100 received by the pressing assembly can be evenly distributed. The adjustment process of the positions of the first side plates b1 and the second side plates b2 is mainly to adjust the second side plates b1 and b2. b2 is adjusted to a suitable position, and then the adjusting pad 22 is placed between the second side panel b2 and the second stand j2 to form a barrier, and then the first telescopic cylinder 21 of the pushing assembly is started to push the first side panel b1 toward the side where the second side panel b2 is located, thereby pressing and fixing the stator coil 100 in the horizontal direction. After that, the second telescopic cylinder 31 is started to press the stator coil 100 under the pressing plate 33 through the rotating arm 32; then a heat source (steam) is introduced into the first heating coil and the second heating coil to start heating. After the heating is completed, a cold source is introduced into the first heating coil and the second heating coil to cool. After the cooling is completed, the operation is reversed to release the pressure of the pressing assembly and the pushing assembly on the stator coil 100, and the electronic coil is taken out to complete the baking process.

[0031] In summary, the stator coil drying and pressing equipment of the present invention changes the inefficient state of the traditional processing technology in which only one coil can be dried and pressed at a time. The drying and pressing timing is adjusted to before the coil is stretched, that is, the coil is dried and pressed when it is in the shuttle-shaped state. More than 20 coils can be dried and pressed at a time, thereby increasing the coil drying and pressing efficiency by more than 10 times, which can greatly reduce the processing time of the frame-shaped coil and improve production efficiency.

[0032] In addition, since the straight part of the coil is shaped and pressed when the coil is still in the shuttle-shaped state, the shape of multiple coils can be kept consistent after the coil is stretched, so that the shaping step can be eliminated in the processing and production of the frame-shaped coil, saving processes and labor. At the same time, it also eliminates the probability of insulation damage caused by shaping of the coil, reducing quality risks in the product processing process.

[0033] The above detailed description of the present invention is intended to enable persons familiar with the art to understand the contents of the present invention and implement them. It does not limit the scope of protection of the present invention. The present invention is not limited to the above embodiments. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for baking and pressing large and medium-sized stator frame coils, which is implemented by baking and pressing equipment, wherein the baking and pressing equipment includes an equipment frame, a clamping mechanism and a heating mechanism arranged on the equipment frame, the equipment frame including a first vertical frame and a second vertical frame fixed to the support platform thereof, the clamping mechanism having a baking and pressing cavity for placing a plurality of stator coils; the clamping mechanism including a first side plate and a second side plate which are arranged between the first vertical frame and the second vertical frame and can move toward and away from each other, a core plate located between the first side plate and the second side plate, a pushing assembly for driving the first side plate or the second side plate to move, and a pressing assembly for pressing the stator coil from above after the stator coil is installed in the baking and pressing cavity, the baking and pressing cavity being formed at a position between the first side plate, the second side plate and the core plate, the heating mechanism including a first heat exchange coil embedded in the first side plate and the second side plate, and a second heat exchange coil embedded in the core plate, the first and second heat exchange coils being connected to an external heat source and a cold source; Its characteristics are: The first side panel, the second side panel and the core panel are independently movable, and an adjustment pad is placed between the second stand and the second side panel. The baking and pressing method includes: before pressing, first adjusting the position of the first and second side panels on both sides to ensure that the stator coil is located in the center of the pressing component. The position adjustment process of the first and second side panels is to first adjust the second side panel to a suitable position, then put the adjustment pad between the second side panel and the second stand to form a blockage, and then start the pushing component to push the first side panel to move toward the side where the second side panel is located, thereby pressing and fixing the stator coil in the horizontal direction, and then start the pressing component to press the stator coil; then introduce a heat source into the first and second heating coils to start heating, and after the heating is completed, introduce a cold source into the first and second heating coils for cooling, and after the cooling is completed, reverse the operation to loosen the pressing component and the pushing component, take out the stator coil, and complete the baking and pressing process.

2. The baking and pressing method according to claim 1, wherein: A plurality of stator coils are distributed in sequence along the up-down direction in the drying and pressing chamber.

3. The baking and pressing method according to claim 2, wherein: In the up and down directions, two adjacent stator coils are separated by strips.

4. The baking and pressing method according to claim 1, wherein: The first stand is located on a side of the first side plate away from the core plate, and the second stand is located on a side of the second side plate away from the core plate.

5. The baking and pressing method according to claim 4, wherein: The pushing assembly includes a plurality of first telescopic cylinders arranged on the first stand, and the power output shafts of the plurality of first telescopic cylinders are fixedly arranged on the first side plate.

6. The baking and pressing method according to claim 4, wherein: The pressing component comprises two bars pressed on the stator coil, a plurality of pressing plates distributed along the length direction of the bars, and a power component for pressing the pressing plates.

7. The baking and pressing method according to claim 6, wherein: The power assembly includes a rotating arm with a middle portion rotatably arranged relative to the first stand, a second telescopic cylinder driving one end of the rotating arm to move up and down, and the other end of the rotating arm can press the pressure plate.

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