Continuous heating device for motor shell

Abstract

The invention belongs to the technical field of motor casings, and particularly relates to a motor casing continuous heating device which comprises a fixed base, a glass sealing cover is mounted above the fixed base, a supporting frame is mounted in the glass sealing cover, and a heating rod is mounted at the end, away from the glass sealing cover, of the supporting frame. The heating end of the heating rod is arranged in a motor shell to be heated, a three-jaw chuck is rotationally arranged on the portion, close to the bottom side, of the interior of the glass sealing cover and used for fixing the motor shell to be heated, and the bottom of the three-jaw chuck is connected with the output end of a motor. The heating area of the motor shell can be wrapped, subsequent continuous machining of the motor shell is facilitated, further, an inert gas generator is designed in the glass sealing cover, inert gas is generated in the heating process of the motor shell, and the problems of workpiece oxidation and surface coating denaturation in the heating process are solved.

Description

Technical Field

[0001] This invention belongs to the field of motor housing technology, specifically a continuous heating device for motor housing. Background Technology

[0002] An electric motor includes a motor housing, and a motor stator and a motor rotor mounted within the motor housing. The motor housing includes a shell for accommodating the motor stator and rotor, and end caps mounted on the axial ends of the motor housing. The end caps are typically fixed to the housing with screws.

[0003] When installing the motor housing (mostly cast iron or aluminum alloy) and the stator core, an interference fit is required. At room temperature, the dimensions of the two interfere with each other, making direct assembly impossible. Therefore, the motor housing needs to be heated to cause it to expand. The expansion must exceed the interference fit to allow space for the stator to be assembled.

[0004] However, currently, flame heating technology is generally used when heating the motor housing. Flame heating (such as oxyacetylene flame) relies on local open flame, and the heat is concentrated at the point of action of the spray gun, resulting in an excessive temperature difference on the surface of the housing. The housing is prone to deformation. If the local overheated area of ​​the housing expands too much, while the low temperature area expands too little, the cooling and contraction after assembly will be uneven, resulting in residual stress.

[0005] Therefore, the present invention provides a continuous heating device for motor housing. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a continuous heating device for a motor housing, comprising a fixed base, a glass sealing cover installed above the fixed base, a support frame installed inside the glass sealing cover, a heating rod installed at the end of the support frame away from the glass sealing cover, the heating end of the heating rod being placed inside the motor housing to be heated, a three-jaw chuck rotatably installed inside the glass sealing cover near the bottom, the three-jaw chuck being used to fix the motor housing to be heated, the bottom of the three-jaw chuck being connected to the motor output end, an inert gas generator installed inside the glass sealing cover and on one side of the three-jaw chuck, and a feeding seat installed on the upper surface of the fixed base and on the side of the glass sealing cover, the feeding seat being used to automatically feed the motor housing to be heated onto the three-jaw chuck.

[0008] Preferably, two guide grooves are formed at the inner edge of the glass sealing cover, and a sealing baffle is slidably disposed in each guide groove. The sealing baffle is used to cover and seal the glass sealing cover. The sealing baffle is controlled by an electric push rod, which is installed above the glass sealing cover. During operation, during the normal heating of the motor housing, each sealing baffle is located inside the guide groove and seals the entire glass sealing cover. After the motor housing has been heated once, the sealing baffle is moved by controlling the electric push rod, so that the sealing baffle moves upward, that is, the outer side of the glass sealing cover is opened. This facilitates the subsequent removal of the heated three-jaw chuck and also facilitates the subsequent feeding seat to send the remaining motor housings to be heated onto the three-jaw chuck.

[0009] Preferably, two placement racks are provided on the side of the feeding seat, and a horizontal placement frame is provided at the bottom of the placement rack. The placement rack and the horizontal placement frame are used to place the motor housing to be heated. A drive unit is provided above the fixed base, and the drive unit is used to control the movement of the feeding seat. During operation, the motor housing is inside the glass sealing cover, and when the motor housing is heated, other motor housings to be heated are placed inside the placement rack and the horizontal placement frame. This design of the placement rack and the horizontal placement frame is beneficial for placing the motor housing directly on the two horizontal placement frames, and it is also convenient for the motor housing above the horizontal placement frame to fall onto the three-jaw chuck after the feeding seat enters the glass sealing cover.

[0010] Preferably, the drive unit includes a reciprocating screw, which is rotatably mounted above a fixed base. A limiting seat adapted to the reciprocating screw is provided above the fixed base. The end of the reciprocating screw is connected to the output end of a motor. A movable seat is threaded on the outer circumferential surface of the reciprocating screw. A symmetrically arranged connecting inclined frame is installed on the side wall of the movable seat. The end of the connecting inclined frame is connected to the side wall of the feeding seat. During operation, when it is necessary to control the feeding seat to move into the glass sealing cover, one of the sealing baffles has already moved upward and the side of the glass sealing cover is opened. Then, the motor is controlled to drive the reciprocating screw to rotate. The reciprocating screw drives the movable seat with its threaded outer surface to move. The movable seat can then drive the connecting inclined frame and the feeding seat to move to one side of the three-jaw chuck, thus facilitating the feeding of the subsequent motor housing.

[0011] Preferably, a rectangular block is installed on the upper end of each of the two feeding seats. The side wall of the rectangular block has multiple through holes. An elastic telescopic rod is installed inside each through hole. A connecting column is installed at the end of all the elastic telescopic rods. The end of the connecting column away from the elastic telescopic rod is connected to the side wall of the placement frame. A moving unit is provided on the side of the feeding seat. The moving unit is used to drive the connecting column to move.

[0012] Preferably, the moving unit includes a second rectangular block, which is mounted on the side wall of the feeding seat and away from the first rectangular block. A plurality of pressure springs are mounted on the side wall of the second rectangular block, and a wedge-shaped block is mounted on the end of the pressure spring away from the second rectangular block. The inclined surface of the wedge-shaped block contacts the side wall of the connecting column. A pressure rod is mounted on the inner wall of the glass sealing cover. When the feeding seat moves toward the side closer to the three-jaw chuck, the end of the pressure rod contacts the side wall of the wedge-shaped block.

[0013] Preferably, a limiting arc groove is provided at the end of the connecting column near the wedge block, and the wedge block is slidably designed inside the limiting arc groove. The groove wall of the limiting arc groove is provided with rounded corners. During operation, the limiting arc groove is provided on the side wall of the connecting column, which facilitates the movement of the wedge block on the side wall of the connecting column, thereby facilitating the movement of the connecting column and the placement frame.

[0014] Preferably, the pressure rod and the wedge block are designed on the same horizontal plane, and the elastic potential energy of the pressure spring is greater than that of the elastic telescopic rod. During operation, after the motor housing is fed once, the reciprocating screw is reversed, causing the reciprocating screw to drive the moving seat back to its initial position. That is, the wedge block will move away from the end of the pressure rod. Since the elastic potential energy of the pressure spring is greater than that of the elastic telescopic rod, the pressure spring will first drive the wedge block back to its initial position, and the wedge block will drive the connecting column, the placement frame, and the horizontal placement frame back to their initial positions. This makes it convenient for the motor housing to be placed back onto the horizontal placement frame. This design can automatically place the motor housing without the need for manual placement by the operator, making the operation simple and convenient, and ensuring high safety.

[0015] Preferably, a telescopic hydraulic cylinder is installed on the side of the fixed base away from the feeding seat. A wrapping plate is installed on the telescopic end of the telescopic hydraulic cylinder. The wrapping plate has an arc-shaped design and is elastic. During operation, after the motor housing has been heated once and needs to be removed, the sealing baffle on the corresponding side of the wrapping plate is controlled to move upward. Then, the telescopic end of the telescopic hydraulic cylinder is controlled to move the wrapping plate, causing it to move closer to the motor housing. Since the wrapping plate has an arc-shaped design and is elastic, it can wrap and fix the heated motor housing. Then, the telescopic hydraulic cylinder is controlled to remove the wrapping plate and the heated motor housing. The operation is relatively convenient.

[0016] Preferably, the inner wall of the wrapping plate is provided with friction protrusions, and the outer surface of the wrapping plate is fitted with a rubber sleeve.

[0017] The beneficial effects of this invention are as follows: 1. The continuous heating device for motor housing of the present invention uses a wedge block to compress the pressure spring on its side wall. That is, the side wall of the connecting column is gradually no longer subjected to the pressure of the inclined surface of the wedge block. Under the recovery of the elastic force of the elastic telescopic rod in the stretched state, the elastic telescopic rod will drive the connecting column to move away from the motor housing. That is, the two connecting columns respectively drive the corresponding placement frame and the horizontal placement frame to move away from each other until the horizontal placement frame is completely away from the bottom of the motor housing. At this time, the feeding seat also moves to the top of the three-jaw chuck. Then the motor housing to be heated will fall into the three-jaw chuck. In this way, the motor housing to be heated can be fixed by the three-jaw chuck, which facilitates the subsequent heating of the motor housing.

[0018] 2. The continuous heating device for motor housing of the present invention controls the motor to drive the reciprocating screw to rotate, and the reciprocating screw drives the movable seat with the thread design on its outer surface to move. The movable seat can then drive the connecting inclined frame and the feeding seat to move to one side of the three-jaw chuck, thus facilitating the feeding of the subsequent motor housing. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the glass sealing cover in this invention; Figure 3 This is a schematic diagram of the support frame in this invention; Figure 4 This is a schematic diagram of the three-jaw chuck in this invention; Figure 5 This is a schematic diagram of the feeding base in this invention; Figure 6 This is a schematic diagram of the connecting column in this invention; Figure 7 This is a schematic diagram of the wedge block structure in this invention; Figure 8 This is a schematic diagram of the limiting arc groove in this invention; Figure 9 This is a top view of the structure in this invention; Figure 10 This is a schematic diagram of the pressure bar structure in this invention; Figure 11 This is a schematic diagram of the structure when the pressure rod and the wedge block are in contact in this invention.

[0021] In the diagram: 1. Fixed base; 2. Glass sealing cover; 201. Guide groove; 202. Sealing baffle; 3. Support frame; 301. Heating rod; 4. Three-jaw chuck; 5. Inert gas generator; 6. Feeding seat; 7. Placement rack; 701. Horizontal placement frame; 8. Reciprocating screw; 801. Moving seat; 9. Connecting inclined frame; 10. Rectangular block one; 11. Through hole; 12. Elastic telescopic rod; 13. Connecting column; 131. Limiting arc groove; 14. Rectangular block two; 15. Pressure spring; 16. Wedge block; 17. Pressure rod; 18. Telescopic cylinder; 19. Wrapping plate. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] like Figures 1 to 11 As shown in the embodiment of the present invention, a continuous heating device for a motor housing includes a fixed base 1, a glass sealing cover 2 installed above the fixed base 1, a support frame 3 installed inside the glass sealing cover 2, a heating rod 301 installed at the end of the support frame 3 away from the glass sealing cover 2, the heating end of the heating rod 301 being placed inside the motor housing to be heated, a three-jaw chuck 4 rotatably installed inside the glass sealing cover 2 near the bottom, the three-jaw chuck 4 being used to fix the motor housing to be heated, the bottom of the three-jaw chuck 4 being connected to the motor output end, an inert gas generator 5 installed inside the glass sealing cover 2 and on one side of the three-jaw chuck 4, and a feeding seat 6 installed on the upper surface of the fixed base 1 and on the side of the glass sealing cover 2, the feeding seat 6 being used to automatically feed the motor housing to be heated onto the three-jaw chuck 4; During operation, the motor housing to be heated is placed in the three-jaw chuck 4, and the bottom of the motor housing is fixed by the three-jaw chuck 4. Then, the heating end of the heating rod 301 is extended into the fixed motor housing, and the heating end of the heating rod 301 is controlled to heat the inside of the motor housing. During the heating process, the motor output end is controlled to drive the three-jaw chuck 4 to rotate slowly. The three-jaw chuck 4 will drive the motor housing to rotate slowly, so that the housing can rotate at a uniform speed around the heating end of the heating rod 301 during the heating process, ensuring the uniformity of the heating of the housing. In addition, a glass sealing cover 2 is designed to cover the heating area of ​​the motor housing, which is beneficial to its subsequent processing. Furthermore, an inert gas generator 5 is designed inside the glass sealing cover 2. During the heating process of the motor housing, inert gas is generated to prevent the workpiece from oxidizing and the surface coating from deteriorating during the heating process. After one heating cycle is completed, the feeder 6 can be controlled to feed the motor housing to be heated into the three-jaw chuck 4. This enables continuous heating of the motor housing, which is beneficial for the subsequent assembly of the motor housing and the stator core. It avoids excessive expansion in the local overheated area of ​​the housing and insufficient expansion in the low-temperature area, resulting in uneven cooling and shrinkage after assembly and residual stress. It should be noted that the heating rod 301 is controlled by an electric telescopic rod, which is installed at the end of the support frame 3. It should also be noted that an infrared temperature probe is installed on the base 1 to achieve non-contact real-time temperature measurement of the casing. The probe angle and height are flexibly adjustable via a universal joint.

[0024] Two guide grooves 201 are provided at the inner edge of the glass sealing cover 2. A sealing baffle 202 is slidably arranged inside each guide groove 201. The sealing baffle 202 is used to cover and seal the glass sealing cover 2. The sealing baffle 202 is controlled by an electric push rod, which is installed above the glass sealing cover 2. During operation, during the normal heating process of the motor housing, each sealing baffle 202 is located inside the guide groove 201 and seals the entire glass sealing cover 2. After the motor housing is heated once, the sealing baffle 202 is moved by controlling the electric push rod, so that the sealing baffle 202 moves upward, that is, the outer side of the glass sealing cover 2 is opened. This makes it convenient to take out the heated three-jaw chuck 4, and also makes it convenient for the subsequent feeding seat 6 to send the remaining motor housings to be heated onto the three-jaw chuck 4.

[0025] Two placement racks 7 are provided on the side of the feeding seat 6. A horizontal placement frame 701 is provided at the bottom of each placement rack 7. The placement racks 7 and the horizontal placement frame 701 are used to place the motor housing to be heated. A drive unit is provided above the fixed base 1, and the drive unit is used to control the movement of the feeding seat 6. During operation, refer to the attached diagram. Figure 4 As shown, there is a motor housing inside the glass sealing cover 2. When the motor housing is heated, other motor housings to be heated are placed inside the placement rack 7 and the horizontal placement frame 701. The placement rack 7 and the horizontal placement frame 701 are designed in this way so that the motor housing can be placed directly above the two horizontal placement frames 701. It is also convenient for the motor housing above the horizontal placement frame 701 to fall onto the three-jaw chuck 4 after the subsequent feeding seat 6 enters the glass sealing cover 2.

[0026] The drive unit includes a reciprocating screw 8, which is rotatably mounted above a fixed base 1. A limiting seat adapted to the reciprocating screw 8 is provided above the fixed base 1. The end of the reciprocating screw 8 is connected to the output end of the motor. A movable seat 801 is threaded on the outer circumferential surface of the reciprocating screw 8. A symmetrically arranged connecting inclined frame 9 is installed on the side wall of the movable seat 801. The end of the connecting inclined frame 9 is connected to the side wall of the feeding seat 6. During operation, when it is necessary to control the feeding seat 6 to move into the glass sealing cover 2, one of the sealing baffles 202 has moved upward and the side of the glass sealing cover 2 is opened. Then, the motor drives the reciprocating screw 8 to rotate. The reciprocating screw 8 drives the movable seat 801 with its threaded outer surface to move. The movable seat 801 can then drive the connecting inclined frame 9 and the feeding seat 6 to move to one side of the three-jaw chuck 4, which facilitates the subsequent feeding of the motor housing.

[0027] like Figures 4 to 11 As shown, a rectangular block 10 is installed on the upper end of each of the two feeding seats 6. Multiple through holes 11 are formed on the sidewall of each rectangular block 10. An elastic telescopic rod 12 is installed inside each through hole 11. A connecting column 13 is installed at the end of all the elastic telescopic rods 12. The end of the connecting column 13 away from the elastic telescopic rod 12 is connected to the sidewall of the placement frame 7. A moving unit is provided on the side of each feeding seat 6. The moving unit is used to move the connecting column 13. The moving unit includes a rectangular block 10. Rectangular block 2 14 is installed on the side wall of the feeding seat 6 away from the side of rectangular block 10. Multiple pressure springs 15 are installed on the side wall of rectangular block 2 14. Wedge blocks 16 are installed at the ends of the pressure springs 15 away from rectangular block 2 14. The inclined surface of the wedge blocks 16 contacts the side wall of the connecting column 13. A pressure rod 17 is installed on the inner wall of the glass sealing cover 2. When the feeding seat 6 moves towards the side of the three-jaw chuck 4, the end of the pressure rod 17 will contact the side wall of the wedge blocks 16. During operation, in the initial state, before the feeding seat 6 moves, the elastic telescopic rod 12 is in a stretched state. When it is necessary to control the feeding seat 6 to move closer to the three-jaw chuck 4, the moving seat 801 will drive the connecting inclined frame 9, the feeding seat 6, the first rectangular block 10, and the second rectangular block 14 to move closer to the pressure rod 17. When the entire feeding seat 6 moves to the end position of the pressure rod 17, the side wall of the wedge block 16 will contact the end of the pressure rod 17, and the end of the pressure rod 17 will squeeze the wedge block 16, causing the inclined surface of the wedge block 16 to move along the side wall of the connecting column 13, i.e., refer to the attached diagram. Figure 8As shown, as the feeding seat 6 continues to move, the wedge block 16 will squeeze the pressure spring 15 on its side wall. That is, the side wall of the connecting column 13 will gradually be free from the pressure of the inclined surface of the wedge block 16. Under the recovery of the elastic force of the elastic telescopic rod 12 in the stretched state, the elastic telescopic rod 12 will drive the connecting column 13 to move away from the motor housing. That is, the two connecting columns 13 will drive the corresponding placement frame 7 and the horizontal placement frame 701 to move away from each other until the horizontal placement frame 701 is completely away from the bottom of the motor housing. At this time, the feeding seat 6 will also move to the top of the three-jaw chuck 4. Then the motor housing to be heated will fall into the three-jaw chuck 4. In this way, the motor housing to be heated can be fixed by the three-jaw chuck 4, which facilitates the subsequent heating of the motor housing.

[0028] The connecting column 13 has a limiting arc groove 131 at the end near the wedge block 16. The wedge block 16 is slidably designed inside the limiting arc groove 131. The groove wall of the limiting arc groove 131 is provided with rounded corners. During operation, the limiting arc groove 131 is provided on the side wall of the connecting column 13, which facilitates the movement of the wedge block 16 on the side wall of the connecting column 13, thereby facilitating the movement of the connecting column 13 and the placement frame 7.

[0029] The pressure rod 17 and the wedge block 16 are designed on the same horizontal plane. The elastic potential energy of the pressure spring 15 is greater than that of the elastic telescopic rod 12. During operation, after the motor housing is fed once, the reciprocating screw 8 is reversed, causing the reciprocating screw 8 to drive the moving seat 801 back to its initial position. That is, the wedge block 16 will move away from the end of the pressure rod 17. Since the elastic potential energy of the pressure spring 15 is greater than that of the elastic telescopic rod 12, the pressure spring 15 will first drive the wedge block 16 back to its initial position. The wedge block 16 will then drive the connecting column 13, the placement frame 7, and the transverse placement frame 701 back to their initial positions. This makes it convenient for the motor housing to be placed back into the transverse placement frame 701. This design allows for automatic placement of the motor housing without the need for manual placement by staff. The operation is simple and convenient, and the safety is high.

[0030] A telescopic cylinder 18 is installed on the side of the fixed base 1 away from the feeding seat 6. A wrapping plate 19 is installed on the telescopic end of the telescopic cylinder 18. The wrapping plate 19 has an arc-shaped design and is elastic. The inner wall of the wrapping plate 19 is provided with friction protrusions, and the outer surface of the wrapping plate 19 is fitted with a rubber sleeve. During operation, when the motor housing has been heated once and needs to be removed, the sealing baffle 202 on the corresponding side of the wrapping plate 19 is controlled to move upward. Then, the telescopic end of the telescopic cylinder 18 is controlled to move the wrapping plate 19, so that the wrapping plate 19 moves closer to the motor housing. Since the wrapping plate 19 has an arc-shaped design and is elastic, it can wrap and fix the heated motor housing. Then, the telescopic cylinder 18 is controlled to remove the wrapping plate 19 and the heated motor housing. The operation is relatively convenient.

[0031] During operation, the motor housing to be heated is placed in the three-jaw chuck 4, and the bottom of the motor housing is fixed by the three-jaw chuck 4. Then, the heating end of the heating rod 301 extends into the fixed motor housing and heats the inside of the motor housing. During the heating process, the motor output end drives the three-jaw chuck 4 to rotate slowly, which in turn drives the motor housing to rotate slowly. This ensures that the housing rotates at a uniform speed around the heating end of the heating rod 301 during the heating process, guaranteeing the uniformity of the heating. Furthermore, a glass sealing cover 2 is designed to cover the heated area of ​​the motor housing, facilitating subsequent processing. In addition, an inert gas generator 5 is designed inside the glass sealing cover 2. During the heating process of the motor housing, inert gas is generated to prevent the workpiece from oxidizing and the surface coating from deteriorating during the heating process. During the normal heating process of the motor housing, each sealing baffle 202 is located inside the guide groove 201 and seals the entire glass sealing cover 2. After the motor housing is heated once, the sealing baffle 202 is moved by controlling the electric push rod, so that the sealing baffle 202 moves upward, that is, the outer side of the glass sealing cover 2 is opened. This makes it convenient to take out the heated three-jaw chuck 4, and also makes it convenient for the subsequent feeding seat 6 to send the remaining motor housings to be heated onto the three-jaw chuck 4.

[0032] See attached document Figure 4As shown, a motor housing is located inside the glass sealing cover 2. When the motor housing is heated, other motor housings to be heated are placed inside the placement rack 7 and the horizontal placement frame 701. This design of the placement rack 7 and the horizontal placement frame 701 facilitates the direct placement of the motor housings above the two horizontal placement frames 701. It also makes it convenient for the motor housings above the horizontal placement frames 701 to fall onto the three-jaw chuck 4 after the feeding seat 6 enters the glass sealing cover 2. When it is necessary to control the feeding seat 6 to move into the glass sealing cover 2, one of the sealing baffles 202 has already moved upward and the side of the glass sealing cover 2 is opened. Then, the motor drives the reciprocating screw 8 to rotate. The reciprocating screw 8 drives the moving seat 801 with its threaded outer surface to move. The moving seat 801 can then drive the connecting inclined frame 9 and the feeding seat 6 to move to one side of the three-jaw chuck 4, which facilitates the feeding of the subsequent motor housings. In the initial state, when the feeding seat 6 has not yet moved, the elastic telescopic rod 12 is in a stretched state. When it is necessary to control the feeding seat 6 to move closer to the three-jaw chuck 4, the moving seat 801 will drive the connecting inclined frame 9, the feeding seat 6, the first rectangular block 10, and the second rectangular block 14 to move closer to the pressure rod 17. When the entire feeding seat 6 moves to the end position of the pressure rod 17, the side wall of the wedge block 16 will contact the end of the pressure rod 17, and the end of the pressure rod 17 will squeeze the wedge block 16, causing the inclined surface of the wedge block 16 to move along the side wall of the connecting column 13, i.e., refer to the attached diagram. Figure 8 As shown, as the feeding seat 6 continues to move, the wedge block 16 will squeeze the pressure spring 15 on its side wall. That is, the side wall of the connecting column 13 will gradually be free from the pressure of the inclined surface of the wedge block 16. And under the recovery of the elastic force of the elastic telescopic rod 12 in the stretched state, the elastic telescopic rod 12 will drive the connecting column 13 to move away from the motor housing. That is, the two connecting columns 13 will drive the corresponding placement frame 7 and the horizontal placement frame 701 to move away from each other until the horizontal placement frame 701 is completely away from the bottom of the motor housing. At this time, the feeding seat 6 will also move to the top of the three-jaw chuck 4. Then the motor housing to be heated will fall into the three-jaw chuck 4. In this way, the motor housing to be heated can be fixed by the three-jaw chuck 4, which is convenient for subsequent heating of the motor housing. After the motor housing is fed once, the reciprocating screw 8 is reversed, causing it to move the movable seat 801 back to its initial position. This means the wedge block 16 will move away from the end of the pressure rod 17. Since the elastic potential energy of the pressure spring 15 is greater than that of the elastic telescopic rod 12, the pressure spring 15 will first move the wedge block 16 back to its initial position. The wedge block 16 will then move the connecting column 13, the placement frame 7, and the transverse placement frame 701 back to their initial positions. This facilitates the re-placement of the motor housing onto the transverse placement frame 701. This design allows for automatic placement of the motor housing without manual intervention. The operation is simple and convenient, and the safety is high. After the motor housing has been heated once and needs to be removed, the sealing baffle 202 on the corresponding side of the wrapping plate 19 is moved upward. Then, the telescopic end of the telescopic cylinder 18 is controlled to move the wrapping plate 19, so that the wrapping plate 19 moves closer to the motor housing. Since the wrapping plate 19 has an arc-shaped design and is elastic, it can wrap and fix the heated motor housing. Then, the telescopic cylinder 18 is controlled to remove the wrapping plate 19 and the heated motor housing. The operation is quite convenient.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A continuous heating device for an electric motor housing, characterized in that: The device includes a fixed base, a glass sealing cover mounted on top of the fixed base, a support frame mounted inside the glass sealing cover, a heating rod mounted on the end of the support frame away from the glass sealing cover, the heating end of the heating rod being placed inside the motor housing to be heated, a three-jaw chuck rotatably mounted inside the glass sealing cover near the bottom, the three-jaw chuck being used to fix the motor housing to be heated, the bottom of the three-jaw chuck being connected to the motor output end, an inert gas generator mounted inside the glass sealing cover and on one side of the three-jaw chuck, and a feeding seat mounted on the upper surface of the fixed base and on the side of the glass sealing cover, the feeding seat being used to automatically feed the motor housing to be heated onto the three-jaw chuck.

2. The continuous heating device for motor housing according to claim 1, characterized in that: Two guide grooves are formed at the inner edge of the glass sealing cover. A sealing baffle is slidably installed in each guide groove. The sealing baffle is used to cover and seal the glass sealing cover. The sealing baffle is controlled by an electric push rod, which is installed above the glass sealing cover.

3. The continuous heating device for motor housing according to claim 2, characterized in that: Two placement racks are provided on the side of the feeding base, and a horizontal placement frame is provided at the bottom of the placement rack. The placement rack and the horizontal placement frame are used to place the motor housing to be heated. A drive unit is provided above the fixed base, and the drive unit is used to control the movement of the feeding base.

4. The continuous heating device for motor housing according to claim 3, characterized in that: The drive unit includes a reciprocating screw, which is rotatably mounted above a fixed base. A limiting seat adapted to the reciprocating screw is provided above the fixed base. The end of the reciprocating screw is connected to the output end of a motor. A movable seat is threaded on the outer circumferential surface of the reciprocating screw. A symmetrically arranged connecting inclined frame is installed on the side wall of the movable seat. The end of the connecting inclined frame is connected to the side wall of the feeding seat.

5. The continuous heating device for a motor housing according to claim 4, characterized in that: A rectangular block is installed on the upper end of each of the two feeding seats. Multiple through holes are opened on the side wall of the rectangular block. An elastic telescopic rod is installed inside each through hole. A connecting column is installed at the end of all the elastic telescopic rods. The end of the connecting column away from the elastic telescopic rod is connected to the side wall of the placement frame. A moving unit is provided on the side of the feeding seat. The moving unit is used to drive the connecting column to move.

6. The continuous heating device for a motor housing according to claim 5, characterized in that: The moving unit includes a second rectangular block, which is mounted on the side wall of the feeding seat and away from the first rectangular block. Multiple pressure springs are mounted on the side wall of the second rectangular block, and a wedge-shaped block is mounted on the end of each pressure spring away from the second rectangular block. The inclined surface of the wedge-shaped block contacts the side wall of the connecting column. A pressure rod is mounted on the inner wall of the glass sealing cover. When the feeding seat moves towards the side of the three-jaw chuck, the end of the pressure rod contacts the side wall of the wedge-shaped block.

7. A continuous heating device for a motor housing according to claim 6, characterized in that: The connecting column has a limiting arc groove at the end near the wedge block, and the wedge block is slidably designed inside the limiting arc groove. The groove wall of the limiting arc groove is provided with rounded corners.

8. A continuous heating device for a motor housing according to claim 6, characterized in that: The pressure rod and the wedge block are designed on the same horizontal plane, and the elastic potential energy of the pressure spring is greater than that of the elastic telescopic rod.

9. A continuous heating device for a motor housing according to claim 2, characterized in that: A telescopic hydraulic cylinder is installed on the side above the fixed base and away from the feeding seat. A wrapping plate is installed on the telescopic end of the telescopic hydraulic cylinder. The wrapping plate has an arc-shaped design and is elastic.

10. A continuous heating device for a motor housing according to claim 9, characterized in that: The inner wall of the wrapping plate is provided with friction protrusions, and the outer surface of the wrapping plate is fitted with a rubber sleeve.

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