A stator housing preheating and press-fitting mechanism

Abstract

The present invention discloses a preheating and press-fitting mechanism for a stator housing. Through the orderly arrangement and cooperation of a preheating component, a transfer component, and a press-fitting component, the stator housing is heated and expanded by the preheating component, the stator housing is transferred to the press-fitting component by the transfer component, and the press-fitting of the stator housing and the washer is completed by the press-fitting component. Overall, the processing is mechanized and automated, liberating the labor force, improving the processing efficiency and product quality, and ensuring that the press-fitting mechanism of the present invention is processed orderly in the overall production line.

Description

Technical Field

[0001] The present invention relates to the field of manufacturing new energy vehicle engines, and particularly to a stator housing preheating and pressing mechanism. Background Art

[0002] In the manufacturing process of new energy vehicle engines, in order to improve the level of automated manufacturing, the current production line has started to achieve unmanned automatic conveying and processing through the cooperation of various processing stations with manipulators, transfer equipment, etc., so as to improve production efficiency and liberate the labor force. Among them, washers need to be pressed on the inner side of the stator housing of the electric engine. The washer itself has an interference fit with the inner wall of the stator housing, and it is relatively difficult to press it in the normal state, which may cause deformation or wear of the washer edge and affect the final product quality. The present invention is to design a stator housing preheating and pressing mechanism, which preheats the stator housing to make it expand, facilitating subsequent pressing, and completing the orderly transfer of materials. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a stator housing preheating and pressing mechanism, which realizes the preheating and transfer of the stator housing, as well as the alignment and pressing of the washer and the stator housing through the cooperation of various components, improves the level of automation, and liberates the labor force.

[0004] The present invention adopts the following technical solutions: A stator housing preheating and pressing mechanism includes an arrangement rack, a preheating component, a transfer component, and a pressing component. The preheating component and the pressing component are arranged side by side at the lower part of the arrangement rack, and the transfer component is arranged at the upper part of the arrangement rack; the transfer component includes a translation component, a material taking cylinder, and a material taking manipulator. The material taking cylinder is arranged on the translation component, and the material taking manipulator is arranged on the material taking cylinder. The translation component drives the material taking cylinder and the material taking manipulator thereon to translate, so that the material taking manipulator corresponds up and down with the preheating component or the pressing component below; the preheating component includes a first placement mold and a heating component. The first placement mold is movably arranged up and down on several first columns, and the first columns are arranged on the arrangement rack. The first placement mold is used for the external manipulator to place the stator housing, and the middle part of the first placement mold is hollow. The heating component is arranged at the middle space position of several first columns. When the first placement mold descends, the heating component is located at the middle hollow position between the first placement mold and the stator housing; the pressing component includes a second placement mold and a third placement mold. The second placement mold is movably arranged up and down on several second columns, and the second columns are arranged on the arrangement rack. The second placement mold is used for the material taking manipulator to place the stator housing, and the middle part of the second placement mold is hollow. The third placement mold is arranged at the middle space position of several second columns. The third placement mold is used for the external manipulator to place the washer. When the second placement mold descends, the stator housing and the washer are pressed into one body.

[0005] As an improvement, there are four first columns arranged in a rectangle around the heating component. The upper parts of the four first columns are connected by a hollow first frame. The four corners of the first placement mold are sleeved on the four first columns. A first driving cylinder is arranged below the placement rack, and the cylinder shaft of the first driving cylinder is axially connected to the first placement mold.

[0006] As an improvement, the heating component includes a heat-conducting wire and a support. The heat-conducting wire is wound in a spiral to form a cylinder. The lower part of the heat-conducting wire is installed on the support, and the end of the heat-conducting wire extends outward and is connected to a control box arranged below the placement rack.

[0007] As an improvement, there are four second columns arranged in a rectangle around the third placement mold. The upper parts of the four second columns are connected by a hollow second frame. The four corners of the second placement mold are sleeved on the four second columns. A second driving cylinder is arranged below the placement rack, and the cylinder shaft of the second driving cylinder is axially connected to the second placement mold.

[0008] As an improvement, both the first placement mold and the second placement mold include a placement ring for supporting the stator housing, and a number of positioning columns are arranged on the placement ring to be aligned with the hole structures on the stator housing.

[0009] As an improvement, the third placement mold includes four positioning blocks evenly arranged in the circumferential direction, and convex blocks for contacting and limiting the washer are arranged on the inner sides of the four positioning blocks in the direction towards the center of the circle.

[0010] As an improvement, the material-taking manipulator includes a third driving cylinder and three clamping jaws. The three clamping jaws are evenly arranged in the circumferential direction. The third driving cylinder is used to drive the three clamping jaws to translate outward to open or translate inward to close. Non-heat-conducting rubber clamping blocks are arranged on the outer sides of the three clamping jaws, and the rubber clamping blocks are used to contact and clamp the inner side wall of the stator housing.

[0011] As an improvement, anti-slip tooth patterns arranged from top to bottom are provided on the surface of the rubber clamping block.

[0012] As an improvement, the translation component includes a translation track, a translation frame and a translation motor. The translation track is horizontally arranged on the placement rack. The translation frame is slidably arranged on the translation track. The translation motor is connected to the translation frame through a screw rod slider assembly for sliding drive. The material-taking cylinder is arranged on the translation frame.

[0013] Advantages of the present invention: Through the orderly arrangement and cooperation of the preheating component, transfer component, and press-fitting component, the stator housing is heated and expanded by the preheating component, the stator housing is transferred to the press-fitting component by the transfer component, and the press-fitting of the stator housing and the washer is completed by the press-fitting component. Overall, the processing is mechanized and automated, liberating the labor force, improving the processing efficiency and product quality, and ensuring the orderly processing of the press-fitting mechanism of the present invention in the overall production line. Brief Description of the Drawings

[0014] Figure 1 It is a schematic perspective view of the mechanism of the present invention with a housing, a washer, and an external manipulator.

[0015] Figure 2 It is a schematic perspective view of the mechanism of the present invention with a housing and a washer from another direction.

[0016] Figure 3 It is a schematic partial perspective view of the preheating component and the press-fitting component of the present invention.

[0017] Figure 4 It is a schematic partial perspective view of the transfer component of the present invention. Detailed Description of the Preferred Embodiment

[0018] The following detailed description of the specific embodiments of the present invention is made with reference to the accompanying drawings.

[0019] As Figure 1 、 2, as shown in FIGS. 3 and 4, is a specific embodiment of the preheating and press-fitting mechanism of the stator housing of the present invention. This embodiment includes an arrangement rack 1, a preheating assembly 2, a transfer assembly 3, and a press-fitting assembly 4. The preheating assembly 2 and the press-fitting assembly 4 are arranged side by side at the lower part of the arrangement rack 1, and the transfer assembly 3 is arranged at the upper part of the arrangement rack 1. The transfer assembly 3 includes a translation assembly 31, a pick-up cylinder 32, and a pick-up manipulator 33. The pick-up cylinder 32 is arranged on the translation assembly 31, and the pick-up manipulator 33 is arranged on the pick-up cylinder 32. The translation assembly 31 drives the pick-up cylinder 32 and the pick-up manipulator 33 thereon to translate, so that the pick-up manipulator 33 is vertically corresponding to the preheating assembly 2 or the press-fitting assembly 4 below. The preheating assembly 2 includes a first placement mold 21 and a heating assembly 22. The first placement mold 21 is movably arranged up and down on several first columns 23. The first columns 23 are arranged on the arrangement rack 1. The first placement mold 21 is used for an external manipulator to place the stator housing. And the middle of the first placement mold 21 is hollow. The heating assembly 22 is arranged at the middle space position of several first columns 23. When the first placement mold 21 descends, the heating assembly 22 is located at the middle hollow position between the first placement mold 21 and the stator housing. The press-fitting assembly 4 includes a second placement mold 41 and a third placement mold 42. The second placement mold 41 is movably arranged up and down on several second columns 43. The second columns 43 are arranged on the arrangement rack 1. The second placement mold 41 is used for the pick-up manipulator 33 to place the stator housing. And the middle of the second placement mold 41 is hollow. The third placement mold 42 is arranged at the middle space position of several second columns 43. The third placement mold 42 is used for an external manipulator to place the washer. When the second placement mold 41 descends, the stator housing and the washer are press-fitted into one body.

[0020] When the present invention is in use, the external manipulator C first clamps and conveys a stator housing A that has been processed at a previous station to the preheating assembly 2, specifically, places it in place on the first placement mold 21. Then the first placement mold 21 descends with the stator housing A, so that the heating assembly 22 is located inside the stator housing A. The heating assembly 22 is started to heat the stator housing A. After heating for a predetermined time, it stops, so that the whole stator housing A expands due to heat. Then the first placement mold 21 rises and resets again, and then leaves the heating assembly 22 to open the inside of the stator housing A.

[0021] The transfer component 3 is used for clamping and transferring the stator housing A. The material-taking cylinder 32 and the material-taking manipulator 33 have two stopping stations on the translation component 31, and the two stopping stations respectively correspond to the first placement mold 21 and the second placement mold 41 below. When the material-taking manipulator 33 corresponds to the first placement mold 21 vertically, the material-taking cylinder 32 drives the material-taking manipulator 33 to descend to clamp the stator housing A and then reset. Then, the translation component 31 moves to another stopping station to correspond to the second placement mold 41. Then, the material-taking cylinder 32 drives the material-taking manipulator 33 to descend to place the stator housing A on the second placement mold 41 and then reset.

[0022] The third placement mold 42 at the press-fitting component 4 is used for placing the washer B. The washer B is pre-placed in place by the conveying manipulator from the side. The second placement mold 41 drives the stator housing A to descend. The stator housing A expands due to the previous heating, so that the internal and external dimension gaps between the stator housing A and the washer B are expanded. As the stator housing A descends, the press-fitting with the washer B can be completed by relying on its own weight. After the stator housing A gradually cools down, the stator housing A and the washer B are firmly clamped. Then the second placement mold 41 rises and resets again, so that the stator housing A and the washer B after press-fitting reach the upper open space, which is convenient for the external manipulator C to clamp and send them to the subsequent processes.

[0023] As a whole, the present invention mechanizes and automates the component processing, liberating the labor force without manual operation. Through the heating expansion structure, the stator housing A and the washer B are better installed and formed, improving the processing efficiency and product quality, and ensuring the orderly processing of the press-fitting mechanism of the present invention in the overall production line.

[0024] As an improved specific embodiment, the first upright posts 23 are four arranged in a rectangle around the heating component 22. The upper parts of the four first upright posts 23 are connected by a hollow first frame 231. The four corners of the first placement mold 21 are sleeved on the four first upright posts 23. A first driving cylinder 24 is arranged below the layout frame 1, and the cylinder shaft of the first driving cylinder 24 is axially connected to the first placement mold 21.

[0025] As Figure 1 、 2As shown in FIGS. 2 and 3, the four first columns 23 form a stable sliding structure on which the first placing mold 21 can stably slide. The upper first frame 231 further strengthens the structural strength of the four first columns 23, ensuring the structural stability of the first placing mold 21, with relatively small wear during up and down sliding and stable up and down positions. The hollow dimension of the first frame 231 is set to be one circle around the large stator housing A, ensuring structural stability while not affecting the placement of the stator housing A. The first driving cylinder 24 is arranged below the layout rack 1, facilitating the connection of circuits and power supplies from below, making rational use of the space below and leaving the upper space undisturbed. The cylinder axis extends upward and is connected to the first placing mold 21 for lifting control. Preferably, the first driving cylinders 24 can be set as a pair symmetrically on the left and right to synchronously drive both sides of the first placing mold 21, improving the stability of lifting.

[0026] As a specific improved embodiment, the heating component 22 includes a heating wire 221 and a support 222. The heating wire 221 is wound in a spiral shape to form a cylinder. The lower part of the heating wire 221 is installed on the support 222, and the end of the heating wire 221 extends outward and is connected to a control box 223 arranged below the layout rack 1.

[0027] As Figure 1 shown in FIGS. 2 2 and 3, the heating wire 221 is wound in a spiral shape to form a cylinder. Depending on the shape of the cylinder, it is as close as possible to the inner wall of the stator housing A, improving the heating efficiency and reducing energy loss and waste. The lower part of the heating wire 221 is arranged through the support 222, increasing the distance between the heating wire 221 and the layout rack 1 below, making the heating safer. Since the layout rack 1 below is used as the layout position for mechanism components such as control modules, power modules, and the control box 223 of the heating wire 221, increasing the distance avoids heat transfer to the layout rack 1 below, thus not affecting the heat dissipation and normal use of other components below. The control box 223 specifically controls the on / off of the heating power supply, and thus controls the use of the heating wire 221.

[0028] As a specific improved embodiment, the four second columns 43 are arranged in a rectangle around the outer periphery of the third placing mold 42. The upper parts of the four second columns 43 are connected by a hollow second frame 431. The four corners of the second placing mold 41 are sleeved on the four second columns 43. A second driving cylinder 44 is arranged below the layout rack 1, and the cylinder axis of the second driving cylinder 44 is connected to the second placing mold 41.

[0029] As Figure 1 shown in FIGS. 2, as shown in FIGS. 3, the four second columns 43 form a stable sliding structure, on which the second placement mold 41 can stably slide. The upper second frame 431 further strengthens the structural strength of the four second columns 43, ensuring the structural stability of the second placement mold 41, with less wear during up and down sliding and stable up and down positions. The hollow size of the second frame 431 is set to be one circle around the large stator housing A, ensuring structural stability while not affecting the placement of the stator housing A. The space on the side of the third placement mold 42 is open, facilitating the feeding of the washer B. The second driving cylinder 44 is arranged below the layout rack 1, facilitating the connection of lines and power supply from below, making reasonable use of the lower space and leaving the upper space undisturbed. The cylinder extends axially upward and is connected to the second placement mold 41 to perform lifting control. Preferably, the second driving cylinder 44 can be set as a symmetric left and right pair, synchronously driving both sides of the second placement mold 41 to improve the stability of lifting and ensure the stable pressing of the stator housing A and the completion of the press-fitting with the washer B.

[0030] As a specific improved implementation manner, both the first placement mold 21 and the second placement mold 41 include a placement ring 5 for supporting the stator housing, and a plurality of positioning columns 6 corresponding to the hole structures on the stator housing are arranged on the placement ring 5.

[0031] As Figure 3 shown, the hollow state of the placement ring 5 is adapted to the passage of the middle heating assembly 22 and the washer B. The solid structure of the placement ring 5 supports the stator housing A. The arranged positioning columns 6 enable the stator housing A to have an accurate placement orientation and position after placement. There are hole structures on the stator housing A corresponding to the positions of the positioning columns 6, completing the structural matching placement and improving the placement stability of the stator housing A.

[0032] As a specific improved implementation manner, the third placement mold 42 includes four positioning blocks 421 uniformly arranged in the circumferential direction, and convex blocks 422 for contacting and limiting the washer are arranged on the inner sides of the four positioning blocks 421 and extend towards the center of the circle.

[0033] As Figure 3 shown, the four positioning blocks 421 form a structurally stable annular limit, which can well limit the washer B. The further arranged convex blocks 422 for contacting the washer B have a smaller size, reducing the friction between the convex blocks 422 and the washer B and facilitating the picking and placing of the washer B.

[0034] As a specific improved implementation manner, the material taking manipulator 33 includes a third driving cylinder 331 and three clamping jaws 332. The three clamping jaws 332 are uniformly arranged in the circumferential direction. The third driving cylinder 331 is used to drive the three clamping jaws 332 to translate outward to open or translate inward to close. Non-heat-conducting rubber clamping blocks 333 are arranged on the outer sides of the three clamping jaws 332, and the rubber clamping blocks 333 are used to contact and clamp the inner side wall of the stator housing.

[0035] As shown Figure 1 , 2 , as shown in Fig. 4, the three jaws 332 can be opened under the control of the third driving cylinder 331, and can stably hold the inner wall of the stator housing A. After closing, the clamping state is released; since the stator housing A is heated and raised in temperature by the heating assembly 22 during the process, the three jaws 332 are specifically provided with non-heat-conducting rubber clamping blocks 333 to reduce heat transfer and provide good friction to clamp and pick up the stator housing A.

[0036] As a specific improved embodiment, the surface of the rubber clamping block 333 is provided with anti-slip tooth patterns arranged from top to bottom.

[0037] As shown Figure 1 , 2 , as shown in Fig. 4, through the design of the anti-slip tooth patterns arranged from top to bottom, the clamping friction in the vertical direction between the three jaws 332 and the inner wall of the stator housing A is improved, and the transfer stability is improved; and the rubber clamping block 333 can be made of rubber with a higher hardness, so that the anti-slip tooth patterns will not undergo large deformation when clamping the inner wall of the stator housing A, reducing heat transfer.

[0038] As a specific improved embodiment, the translation assembly 31 includes a translation track 311, a translation frame 312 and a translation motor 313. The translation track 311 is horizontally arranged on the layout frame 1. The translation frame 312 is slidably arranged on the translation track 311. The translation motor 313 is connected to the translation frame 312 through a lead screw slider assembly 314 for sliding drive, and the pick-up cylinder 32 is arranged on the translation frame 312.

[0039] As shown Figure 1 , 2 , as shown in Fig. 4, through the translation track 311 and in cooperation with the translation motor 313 to drive the translation frame 312, a horizontal reciprocating motion can be performed, so as to horizontally transfer the pick-up cylinder 32 and the pick-up manipulator 33 thereon, so that the pick-up manipulator 33 corresponds to the first placement mold 21 or the second placement mold 41; the translation track 311 is horizontally arranged on the upper part of the layout frame 1 to form a suitable height, and maintains a good distance from the lower first placement mold 21 and the second placement mold 41 for the external manipulator C to pick up and place materials; the lead screw slider assembly 314 is horizontally arranged with the translation track 311. The lead screw is rotated by the translation motor 313, and the slider is connected to the translation frame 312 to achieve translation drive, and overall, precise translation position control is achieved.

[0040] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. Any technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. A stator housing preheating and press-fitting mechanism, characterized in that: It includes an arrangement rack (1), a preheating component (2), a transfer component (3) and a press-fitting component (4). The preheating component (2) and the press-fitting component (4) are arranged side by side at the lower part of the arrangement rack (1), and the transfer component (3) is arranged at the upper part of the arrangement rack (1). The transfer component (3) includes a translation component (31), a material-taking cylinder (32) and a material-taking manipulator (33). The material-taking cylinder (32) is arranged on the translation component (31), and the material-taking manipulator (33) is arranged on the material-taking cylinder (32). The translation component (31) drives the material-taking cylinder (32) and the material-taking manipulator (33) thereon to translate, so that the material-taking manipulator (33) corresponds vertically to the preheating component (2) or the press-fitting component (4) below. The preheating component (2) includes a first placement mold (21) and a heating component (22). The first placement mold (21) is movably arranged up and down on several first columns (23). The first columns (23) are arranged on the arrangement rack (1). The first placement mold (21) is used for an external manipulator to place the stator housing, and the middle part of the first placement mold (21) is hollow. The heating component (22) is arranged at the middle space position of several first columns (23). When the first placement mold (21) descends, the heating component (22) is located at the middle hollow position between the first placement mold (21) and the stator housing. The press-fitting component (4) includes a second placement mold (41) and a third placement mold (42). The second placement mold (41) is movably arranged up and down on several second columns (43). The second columns (43) are arranged on the arrangement rack (1). The second placement mold (41) is used for the material-taking manipulator (33) to place the stator housing, and the middle part of the second placement mold (41) is hollow. The third placement mold (42) is arranged at the middle space position of several second columns (43). The third placement mold (42) is used for an external manipulator to place the washer. When the second placement mold (41) descends, the stator housing and the washer are press-fitted into one body.

2. The preheating and press-fitting mechanism for a stator housing according to claim 1, wherein: The first columns (23) are four arranged in a rectangle around the periphery of the heating component (22). The upper parts of the four first columns (23) are connected by a hollow first frame (231). The four corners of the first placement mold (21) are sleeved on the four first columns (23). A first driving cylinder (24) is arranged below the arrangement rack (1), and the cylinder shaft of the first driving cylinder (24) is axially connected to the first placement mold (21). The heating component (22) includes a heat-conducting wire (221) and a support (222). The heat-conducting wire (221) is wound in a spiral to form a cylinder. The lower part of the heat-conducting wire (221) is installed on the support (222). The end of the heat-conducting wire (221) extends outwards and is connected to a control box (223) arranged below the arrangement rack (1).

3. The preheating and press-fitting mechanism for a stator housing according to claim 1, characterized in that: The second columns (43) are four arranged in a rectangle around the outer periphery of the third placing die (42). The upper parts of the four second columns (43) are connected by a hollow second frame (431). The four corners of the second placing die (41) are sleeved on the four second columns (43). A second driving cylinder (44) is arranged below the placing frame (1), and the cylinder axis of the second driving cylinder (44) is connected to the second placing die (41).

4. A stator housing preheating and press-fitting mechanism according to any one of claims 1-3, characterized in that: Both the first placing die (21) and the second placing die (41) include a placing ring (5) for supporting the stator housing. A plurality of positioning columns (6) corresponding to the hole structures on the stator housing are arranged on the placing ring (5).

5. A stator housing preheating and press-fitting mechanism according to any one of claims 1-3, characterized in that: The third placing die (42) includes four positioning blocks (421) evenly arranged in the circumferential direction. The inner sides of the four positioning blocks (421) are arranged towards the center of the circle to form bumps (422) for contacting and limiting the washer.

6. A stator housing preheating and press-fitting mechanism according to any one of claims 1-3, characterized in that: The material taking manipulator (33) includes a third driving cylinder (331) and three clamping jaws (332). The three clamping jaws (332) are evenly arranged in the circumferential direction. The third driving cylinder (331) is used to drive the three clamping jaws (332) to translate outwards to open or translate inwards to close. Non-heat-conducting rubber clamping blocks (333) are arranged on the outer sides of the three clamping jaws (332), and the rubber clamping blocks (333) are used to contact and clamp the inner side wall of the stator housing.

7. A stator housing preheating and pressing mechanism according to claim 6, characterized in that: Anti-slip tooth patterns are arranged on the surface of the rubber clamping block (333) from top to bottom.

8. A stator housing preheating and press-fitting mechanism according to any one of claims 1-3, characterized in that: The translation assembly (31) includes a translation track (311), a translation frame (312), and a translation motor (313). The translation track (311) is horizontally arranged on the placing frame (1). The translation frame (312) is slidably arranged on the translation track (311). The translation motor (313) is connected to the translation frame (312) through a screw rod slider assembly (314) for sliding drive. The material taking cylinder (32) is arranged on the translation frame (312).

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