Motor press-fitting equipment

Abstract

The utility model provides a motor press-fitting device, which is used for press-fitting a winding stator of a motor into a casing of the motor during motor press-fitting, and comprises a rack (10), a workpiece supporting device (20), a motor press-fitting device (30), a motor press-fitting device (30), a motor press-fitting device (40) and a motor press-fitting device (40), and the workpiece supporting device (20) is used for supporting a pre-assembled body formed by pre-assembling the casing and the winding stator; the press machine (30) is used for providing press-fitting pressure, and the inner supporting centering mechanism (40) is provided with an inner supporting claw (422) capable of moving in the radial direction relative to a first central axis and used for being matched with the end of a central hole of the machine shell so that the machine shell can be centered relative to the first central axis; the clamping centering mechanism (50) is provided with a clamping arm (522) capable of moving in the radial direction relative to a second central axis, the clamping arm (522) is used for being matched with the outer surface of the winding stator so that the winding stator can be centered relative to the second central axis, and the second central axis and the first central axis are coaxially arranged. According to the invention, the concentricity of the casing and the winding stator can be ensured in the motor press-fitting process.

Description

Technical Field

[0001] The present invention belongs to the technical field of motor assembly equipment, and in particular relates to a motor press-fitting device. Background Art

[0002] With the advancement of technology, the degree of automation of motor assembly is getting higher and higher. The motor includes a housing, a winding stator installed in the housing, and a rotor that can be placed in the winding stator. The winding stator needs to be pressed into the housing by a motor press-fitting device.

[0003] The motor press-fitting equipment generally includes a frame, a press installed on the upper part of the frame, and a workpiece support device (or press-fitting base) installed on the lower part of the frame. The housing is placed on the conveyor line and pre-assembled with the winding stator to be pressed to form a pre-assembled body, which is carried by the conveyor plate and transported to the press-fitting equipment. The press of the press-fitting equipment drives the pressure head to press the pre-assembled body and press the winding stator into the housing.

[0004] This existing motor press-fitting technology makes it difficult to ensure that the housing and the winding stator are concentric during the press-fitting process, which affects the quality of the motor.

[0005] In addition, if you want to assemble motors of different models, you can use different press-fitting equipment, or you can use the same press-fitting equipment but replace different press heads. Using different press-fitting equipment will increase production costs and occupy limited production space. Replacing the press head is done manually, and the changeover time is long, affecting production efficiency. Moreover, since the entire production line (conveyor line) is generally compact in layout and has many types of equipment, there are safety risks in the changeover process. Utility Model Content

[0006] The technical problem to be solved by the present disclosure is to provide a motor press-assembly device to at least partially eliminate the defects existing in the prior art.

[0007] A technical problem to be solved by the present disclosure is to provide a motor press-fitting device, so that the housing and the winding stator can be ensured to be concentric during the motor press-fitting process.

[0008] Another technical problem to be solved by the present disclosure is to provide a motor press-fitting device capable of quickly switching between different pressing heads during motor press-fitting.

[0009] To solve the above technical problems, the present disclosure provides a motor pressing device, which is used to press the winding stator of the motor into the casing of the motor during the motor pressing, including: a frame, a workpiece supporting device, which is installed at the lower part of the frame and is used to support a conveying plate conveyed by a conveyor line and a preassembled body formed by pre-assembling the casing and the winding stator and carried by the conveying plate; a press, which is installed at the upper part of the frame and is used to provide pressing pressure, and is characterized in that the motor pressing device also includes: an inner support centering mechanism, which has an inner support claw that can move radially relative to a first center axis, and is used to cooperate with the end of the center hole of the casing to center the casing relative to the first center axis; and a clamping centering mechanism, which has a clamping arm that can move radially relative to a second center axis, and is used to cooperate with the outer surface of the winding stator to center the winding stator relative to the second center axis, wherein the second center axis is coaxially arranged with the first center axis.

[0010] In the present disclosure, an internal support centering mechanism for centering relative to a first center axis and a clamp centering mechanism for centering relative to a second center axis are provided in the motor pressing equipment. Since the second center axis is coaxially arranged with the first center axis, the casing can be made concentric with the upper winding stator located above, thereby ensuring the concentricity of the casing and the winding stator during the motor pressing process, thereby ensuring the quality of the motor.

[0011] Further, according to an embodiment of the present disclosure, the motor pressing equipment also includes a quick-change press head device, which is connected to the press and driven by the press, including: a first press head, suitable for pressing a first model of motor; a second press head, suitable for pressing a second model of motor; and a quick-change drive mechanism, which moves the first press head and the second press head to selectively place one of the first press head and the second press head in a pressing operation position corresponding to the second center axis; and a control unit, which is connected to one or more of the workpiece support device, the press, the internal support centering mechanism, the clamping centering mechanism and the quick-change press head device to control their operation.

[0012] In this embodiment, when the motor is changed and press-fitted, the corresponding first pressing head or second pressing head adapted to the changed motor can be moved to the pressing operation position through the quick-change drive mechanism, and the casing of the changed motor can be aligned relative to the first center axis through the internal support centering mechanism at the bottom position, and the winding stator of the changed motor can be automatically aligned relative to the second center axis through the clamping centering mechanism at the upper position. Since the second center axis is coaxially arranged with the first center axis, the casing can be made concentric with the upper winding stator located above, so that when the motor is changed, there is no need for manual alignment, and the pressing head can be quickly switched and the winding stator can be concentrically press-fitted into the casing, thereby improving production efficiency.

[0013] Further, according to an embodiment of the present disclosure, the frame includes: a frame base; a frame top plate, arranged above the frame top plate; and a frame column, connected between the frame base and the frame top plate to support the frame top plate, wherein the press is installed on the frame top plate, and wherein the quick-change press head device is slidably arranged along the frame column.

[0014] In this embodiment, the quick-change press head device slides along the frame column, and the frame column also plays a guiding role, thereby making the press-fitting process more stable.

[0015] Further, according to an embodiment of the present disclosure, the inner support centering mechanism includes: a first bottom lifting assembly; a three-jaw chuck assembly, which is arranged on the first bottom lifting assembly and is lifted and lowered by the first bottom lifting assembly, and the three-jaw chuck assembly includes three inner support claws.

[0016] In this embodiment, the three-jaw chuck assembly is arranged on the first bottom lifting assembly, so that after the inner support claws complete the centering of the casing, the three-jaw chuck assembly can be lowered through the first bottom lifting assembly, so that the inner support claws leave the inner hole of the casing to avoid pressing the winding stator downward into the casing.

[0017] Further, according to an embodiment of the present disclosure, the workpiece supporting device includes: a second bottom lifting assembly, mounted on the frame base; a workpiece supporting body, arranged above the frame base, and lifted up by the second bottom lifting assembly to support the conveying plate carrying the preassembled body conveyed by the conveying line upward from a first height position of the conveying plate on the conveying line to a second height position of the conveying plate away from the conveying line; a bottom movable pad assembly, arranged on the frame base, for at least partially moving to the bottom of the workpiece supporting body after the workpiece supporting body is lifted up, so as to support the workpiece supporting body after the workpiece supporting body is lowered by the second bottom lifting assembly, and to ensure that the conveying plate is still at the first height position of the conveying plate away from the conveying line.

[0018] In this embodiment, through the second bottom lifting assembly and the bottom movable pad assembly, the workpiece support body can support the conveying plate and the preassembled body it carries away from the conveying line for pressing operations, and at the same time can provide stable bottom support during the pressing operation to ensure the pressing quality.

[0019] Further, according to an embodiment of the present disclosure, the workpiece support body includes: a workpiece support body bottom plate, which is arranged on the frame base; a workpiece support body top plate, which is arranged above the workpiece support body bottom plate and is used to support the conveying plate and the preassembled body, and the workpiece support body top plate is provided with a workpiece support body top plate center hole for the inner support claw to pass through; a workpiece support body connecting column, which is connected between the workpiece support body bottom plate and the workpiece support body top plate to support the workpiece support body top plate; and a workpiece support body guide column, which is connected between the workpiece support body bottom plate and the workpiece support body top plate, wherein the first bottom lifting assembly includes: a first lifting cylinder, which is installed on the frame base; and a lifting support plate, which is supported by the first lifting cylinder, arranged between the workpiece support body bottom plate and the workpiece support body top plate, and has a lifting support plate guide hole that cooperates with the workpiece support body guide column, and the three-jaw chuck assembly is installed on the lifting support plate.

[0020] In this embodiment, through the above arrangement, the inner support inner structure is formed in the workpiece supporting device, so that the overall structure is compact and more suitable for use with a conveyor line.

[0021] Further, according to an embodiment of the present disclosure, the bottom moving pad assembly includes: a bottom horizontal moving slide rail installed on the frame base; a bottom horizontal moving pad arranged on the frame base and guided by the bottom horizontal moving slide rail; and a bottom horizontal moving cylinder installed on the frame base and connected to the bottom horizontal moving pad to drive the bottom horizontal moving pad to move between a forward position and a backward position.

[0022] In this embodiment, by providing a bottom horizontal moving slide rail, a bottom horizontal moving pad, and a bottom horizontal moving cylinder, stable support for the workpiece support body can be conveniently achieved.

[0023] Further, according to an embodiment of the present disclosure, the press is installed on the top surface of the frame top plate, and includes a press-fitting hydraulic cylinder, the press-fitting hydraulic cylinder includes: a press-fitting cylinder body, which is installed on the top surface of the frame top plate; and a press-fitting piston rod, which extends from the press-fitting cylinder body to the bottom of the frame top plate, wherein the quick-change drive mechanism includes: a quick-change base plate, which is slidably arranged along the frame column and connected to the press-fitting piston rod; a quick-change slide rail, which is fixedly arranged on the lower surface of the quick-change base plate; a quick-change sliding plate, which is arranged on the lower surface of the quick-change base plate and guided by the quick-change slide rail, and the first pressure head and the second pressure head are fixedly arranged on the quick-change sliding plate; and a quick-change cylinder, which is installed on the quick-change base plate and connected to the quick-change sliding plate to drive the quick-change sliding plate to move between a first horizontal position and a second horizontal position, wherein, in the first horizontal position, the first pressure head is in a press-fitting operation position corresponding to the second central axis, and in the second horizontal position, the second pressure head is in a press-fitting operation position corresponding to the second central axis.

[0024] In this embodiment, the quick-change sliding plate carrying two pressing heads is driven by a quick-change cylinder to move between two positions, thereby realizing rapid switching of the pressing heads.

[0025] Further, according to an embodiment of the present disclosure, the clamp centering mechanism includes: a clamp vertical working part, including a clamp column, a clamp vertical slide that can vertically slide along the clamp column, and a clamp vertical driving part that drives the clamp vertical slide; and a clamp horizontal working part, including a clamp crossbeam, two clamp arms that can horizontally slide along the clamp crossbeam, and a clamp horizontal driving part that drives the two clamp arms to move in opposite directions, wherein the control unit is configured to, after the clamp centering mechanism enters a centering state, enable the clamp centering mechanism to maintain the clamp centering state when the quick-change ram device moves downward to perform press-fitting, and move downward synchronously with the quick-change ram device, and when the winding stator and the casing enter a predetermined interference fit state, control the inner support centering mechanism and the clamp centering mechanism to respectively release the inner support centering state and the clamp centering state to avoid press-fitting interference.

[0026] In this embodiment, the clamping and centering mechanism maintains the clamping and centering state and moves downward synchronously when the quick-change pressure head device moves downward to perform press-fitting, which can better ensure the concentric press-fitting of the winding stator and the casing, and after the winding stator and the casing enter an interference fit state such as a predetermined fit length, which can be determined by the relative position relationship between the winding stator and the casing in the vertical direction, the centering states of the inner support centering mechanism and the clamping and centering mechanism are released, which can avoid interference between the winding stator, the casing, the inner support centering mechanism and the clamping and centering mechanism during the press-fitting process, thereby ensuring smooth press-fitting and avoiding damage to equipment and products.

[0027] Further, according to an embodiment of the present disclosure, each of the clamping arms includes: a clamping arm body, mounted on the clamping vertical slide; a clamping arm slide rail assembly, oriented in the vertical direction and mounted on the clamping arm body; and a clamping contact block, mounted on the clamping arm slide rail assembly.

[0028] In this embodiment, since the clamping arm has a clamping contact block that can slide along the clamping arm slide rail assembly, it is allowed that while the winding stator is clamped and positioned by the clamping centering mechanism, the quick-change press head device can be driven by the press to perform interference fit on the winding stator for a first predetermined distance. The first predetermined distance depends on the sliding stroke range of the clamping arm slide rail assembly, thereby ensuring the press-fitting quality.

[0029] Further, according to an embodiment of the present disclosure, each of the clamping arms includes two clamping arm slide rail assemblies and two clamping contact blocks, the two clamping contact blocks are arranged in a V shape toward the second center axis, and each of the clamping contact blocks is provided with an arc-shaped contact portion extending along the circumferential direction of the winding stator.

[0030] In this embodiment, the clamping contact blocks arranged in a V-shape and the arc-shaped contact portions extending along the circumferential direction of the winding stator can better achieve clamping centering of the winding stator, thereby improving the press-fitting quality of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present disclosure. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the drawings:

[0032] Figure 1 is a schematic diagram of a main stereoscopic structure of a motor press-assembly device according to an embodiment of the present disclosure, viewed from a first perspective from the upper left front side;

[0033] Figure 2 yes Figure 1 The schematic diagram of the main stereoscopic structure of the motor press-assembly device shown is observed from a second viewing angle from the upper left of the front side;

[0034] Figure 3 yes Figure 1 The schematic diagram of the main stereoscopic structure of the motor press-assembly device shown is observed from a third perspective from the lower right side of the front side;

[0035] Figure 4 yes Figure 1 The main structural diagram of the motor press-assembly equipment shown;

[0036] Figure 5 yes Figure 1The left side structural diagram of the motor press-assembly equipment shown;

[0037] Figure 6 yes Figure 1 The rear view structural diagram of the motor press-assembly equipment shown;

[0038] Figure 7 yes Figure 1 A schematic diagram of the three-dimensional structure of the clamp centering mechanism of the motor press-fitting equipment shown;

[0039] Figure 8 yes Figure 1 The three-dimensional structural schematic diagram of the quick-change ram device of the motor press-fitting equipment is shown, which shows the connection between the quick-change ram device and the press-fitting piston rod of the press.

[0040] Description of Figure Numbers:

[0041] 10. rack; 11. rack base; 111. rack base substrate;

[0042] 112. Support feet for the rack base; 113. Adjustment bolts for the rack base; 114. Pads for the rack base;

[0043] 12. Rack top plate; 13. Rack columns;

[0044] 20. Workpiece support device; 21. Second bottom lifting assembly; 22. Workpiece support body;

[0045] 221. bottom plate of workpiece support body; 222. top plate of workpiece support body;

[0046] 222a, center hole of top plate of workpiece support body;

[0047] 223, workpiece support body connected to the column;

[0048] 224, workpiece support body guide column;

[0049] 23. Bottom moving pad assembly; 231. Bottom horizontal moving slide rail;

[0050] 232. Bottom horizontal moving pad; 233. Bottom horizontal moving cylinder;

[0051] 30. Press; 31. Hydraulic station; 32. Press-fit hydraulic cylinder;

[0052] 321. Press-fit the cylinder body; 322. Press-fit the piston rod;

[0053] 40. Inner support centering mechanism; 41. First bottom lifting assembly; 411. First lifting cylinder;

[0054] 412, lifting support plate; 42, three-jaw chuck assembly; 422, inner support claw;

[0055] 50. Clamp centering mechanism; 51. Clamp vertical working part; 511. Clamp column;

[0056] 512, clamp vertical slide; 513, clamp vertical drive unit; 52, clamp horizontal working unit;

[0057] 521, clamping crossbeam; 522, clamping arm; 522a, clamping arm body;

[0058] 522b, clamp arm slide rail assembly; 522c, clamp contact block; 522d, arc-shaped contact portion;

[0059] 523, clamping horizontal driving unit;

[0060] 60. Quick-change pressure head device; 61. First pressure head; 62. Second pressure head;

[0061] 63. Quick-change drive mechanism; 631. Quick-change base plate; 632. Quick-change slide rail;

[0062] 633. Quick-change sliding plate; 634. Quick-change cylinder. DETAILED DESCRIPTION

[0063] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0064] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form as well.

[0065] Figures 1 to 3 is a schematic diagram of a main stereoscopic structure of a motor press-assembly device according to an embodiment of the present disclosure observed from different viewing angles, Figures 4 to 6 The front view, left view and rear view of the motor press-fitting device are shown respectively. Figure 7 and Figure 8 The three-dimensional structural schematic diagrams of the clamp centering mechanism and the quick-change pressure head device are shown respectively.

[0066] The motor pressing equipment disclosed in the present invention can be arranged on a conveyor line (motor production line) to receive a pre-assembled body formed by pre-assembling the housing and the winding stator and carried by the conveyor plate, which is transported by the conveyor line. The pre-assembled body is placed on the conveyor plate carried by the conveyor line. When the conveyor plate and the pre-assembled body carried by it reach the pressing station where the motor pressing equipment is located, the motor pressing equipment stops the conveyor plate and lifts the conveyor plate to make it leave the conveyor line, and then performs a press-fitting operation on the pre-assembled body to press-fit the winding stator of the motor into the housing of the motor. After the press-fitting operation is completed, the motor pressing equipment lowers the conveyor plate to place it back on the conveyor line, and transports the conveyor plate and the pressed assembly carried by it to the next motor assembly station via the conveyor line.

[0067] See also Figures 1 to 3 , and see Figures 4 to 6 It can be seen that the motor pressing equipment according to a specific embodiment of the present disclosure includes: a frame 10, a workpiece supporting device 20, a press machine 30, an inner support centering mechanism 40, a clamping centering mechanism 50, a quick-change press head device 60 and a control unit.

[0068] The "inner support" referred to in the present disclosure refers to the process / state in which the inner support claws extend into the inner hole of the motor casing and move away from each other radially from the inside to the outside to form an opening and contact with the inner surface of the inner hole of the casing.

[0069] The workpiece support device 20 is installed at the lower part of the frame 10, and is used to support the preassembled body formed by preassembly of the casing and the winding stator. The press machine 30 is installed at the upper part of the frame 10, and is used to provide press-fitting pressure. The inner support centering mechanism 40 is installed at the lower part of the frame 10, and has an inner support claw 422 that can move radially relative to the first center axis, and is used to cooperate with a partial length of the lower end of the center hole of the casing, thereby realizing the centering of the casing relative to the first center axis. The clamping centering mechanism 50 has two clamping arms 522 that can move radially relative to the second center axis. The two clamping arms 522 can be clamped on the outer surface of the winding stator, and by cooperating with the outer surface of the winding stator, the winding stator can be centered relative to the second center axis. Among them, the second center axis is coaxially arranged with the first center axis.

[0070] Since the motor pressing equipment of this embodiment of the present disclosure is provided with an inner support centering mechanism 40 for centering relative to the first center axis and a clamping centering mechanism 50 for centering relative to the second center axis, and the second center axis is coaxially arranged with the first center axis, the casing can be made concentric with the upper winding stator located above, thereby ensuring the concentricity of the casing and the winding stator during the motor pressing process, thereby ensuring the quality of the motor.

[0071] The quick-change ram device 60 is connected to the press 30 and driven by the press 30, and includes a first ram 61, a second ram 62 and a quick-change drive mechanism 63. The first ram 61 is suitable for press-fitting a first type of motor, and the second ram 62 is suitable for press-fitting a second type of motor. When the motor is changed, the quick-change drive mechanism 63 is used to move the first ram 61 and the second ram 62 so that the one of the first ram 61 and the second ram 62 that is adapted to the motor to be assembled is in a press-fitting operation position corresponding to the second center axis. The control unit is connected to one or more of the workpiece support device 20, the press 30, the inner support centering mechanism 40, the clamp centering mechanism 50 and the quick-change ram device 60 to control their operations respectively.

[0072] When the motor is changed and press-fitted, the corresponding first pressing head or second pressing head adapted to the changed motor can be moved to the press-fitting operation position through the quick-change drive mechanism 63, and the casing of the changed motor can be aligned relative to the first center axis through the internal support centering mechanism at the bottom position, while the winding stator of the changed motor can be automatically aligned relative to the second center axis through the clamping centering mechanism at the upper position. Since the second center axis is coaxially arranged with the first center axis, the casing can be made concentric with the upper winding stator located above, so that when the motor is changed, there is no need for manual alignment, and the pressing head can be quickly switched and the winding stator can be concentrically press-fitted into the casing, thereby improving production efficiency.

[0073] Continue to see Figures 1 to 3 as well as Figures 4 to 6 The frame 10 includes: a frame base 11, a frame top plate 12 and four frame columns 13. The frame top plate 12 is arranged above the frame top plate 12. The four frame columns 13 are connected between the frame base 11 and the frame top plate 12 to support the frame top plate 12. The press 30 is installed on the frame top plate 12. The frame columns 13 can play a vertical guiding role, and the quick-change press head device 60 is slidably arranged along the frame columns 13.

[0074] Since the quick-change press head device 60 slides along the frame column 13, the frame column 13 also plays a guiding role, thereby making the motor press-fitting process more stable.

[0075] See also Figure 1 The inner support centering mechanism 40 includes a first bottom lifting assembly 41 and a three-jaw chuck assembly 42. The three-jaw chuck assembly is arranged on the first bottom lifting assembly 41 and is lifted and lowered by the first bottom lifting assembly 41. The three-jaw chuck assembly 42 includes three inner support claws 422.

[0076] In this embodiment, the three-jaw chuck assembly 42 is arranged on the first bottom lifting assembly 41, so that after the inner support claw 422 completes the centering of the casing, the three-jaw chuck assembly 42 can be lowered through the first bottom lifting assembly 41, so that the inner support claw 422 leaves the inner hole of the casing to avoid the winding stator being pressed downward into the casing.

[0077] Continue to combine with Figure 1 The workpiece support device 20 includes a second bottom lifting assembly 21, a workpiece support body 22 and a bottom movable pad assembly 23. The second bottom lifting assembly 21 is mounted on the frame base 11. The workpiece support body 22 is arranged above the frame base 11 and is lifted by the lifting action of the second bottom lifting assembly 21 to support the conveying plate carrying the pre-assembled body conveyed by the conveying line upward, so that the conveying plate is moved from the first height position of the conveying plate on the conveying line to the second height position of the conveying plate upwardly leaving the conveying line, so that the movement of the conveying line will not act on the conveying plate, and the conveying plate and the pre-assembled body carried by it can be maintained at the press-fitting operation position where the motor press-fitting device is located. The bottom movable pad assembly 23 is arranged on the frame base 11, and is used to at least partially move to the bottom of the workpiece support body 22 after the workpiece support body 22 is lifted, and then the workpiece support body 22 can be dropped onto the bottom movable pad assembly 23 by the descending action of the second bottom lifting assembly 21, and the bottom movable pad assembly 23 installed on the frame base 11 provides stable support to ensure the stable progress of the press-fitting action. At this time, the conveyor plate is still at the first height position of the conveyor plate away from the conveyor line and is not affected by the movement of the conveyor line.

[0078] In this embodiment, through the second bottom lifting assembly 21 and the bottom movable pad assembly 23, the workpiece support 22 can support the conveying plate and the preassembled body it carries away from the conveying line for pressing operations, and at the same time can provide stable bottom support during the pressing operation to ensure the pressing quality.

[0079] Continue to combine with Figure 1 The workpiece support 22 includes a workpiece support bottom plate 221, a workpiece support top plate 222, a workpiece support connecting column 223 and a workpiece support guiding column 224. The workpiece support bottom plate 221 is arranged on the frame base 11, and the workpiece support top plate 222 is arranged above the workpiece support bottom plate 221 to support the conveying plate and the pre-assembled body. The workpiece support top plate 222 is provided with a workpiece support top plate center hole 222a for the inner support claw 422 to pass through. The workpiece support connecting column 223 is connected between the workpiece support bottom plate 221 and the workpiece support top plate 222 to support the workpiece support top plate 222. The workpiece support guiding column 224 is connected between the workpiece support bottom plate 221 and the workpiece support top plate 222 to provide guidance for the first bottom lifting assembly 41.

[0080] The first bottom lifting assembly 41 includes a first lifting cylinder 411 and a lifting support plate 412. The first lifting cylinder 411 is installed on the frame base 11, and the lifting support plate 412 is supported by the first lifting cylinder 411 and arranged between the workpiece support body bottom plate 221 and the workpiece support body top plate 222. The lifting support plate 412 has a lifting support plate guide hole that cooperates with the workpiece support body guide column 224 so as to smoothly lift and lower, and at the same time support the lifting of the three-claw chuck assembly 42 installed on the lifting support plate 412.

[0081] In this embodiment, through the above arrangement, the inner support centering mechanism 40 is formed in the workpiece supporting device 20, so that the overall structure is compact and more suitable for use with a conveyor line.

[0082] See also Figure 1 and Figure 2 It can be seen that the bottom moving pad assembly 23 includes a bottom horizontal moving slide rail 231, a bottom horizontal moving pad 232 and a bottom horizontal moving cylinder 233. The bottom horizontal moving slide rail 231 is installed on the frame base 11, and the bottom horizontal moving pad 232 is arranged on the frame base 11 and guided by the bottom horizontal moving slide rail 231. The bottom horizontal moving cylinder 233 is installed on the frame base 11 and connected to the bottom horizontal moving pad 232 to drive the bottom horizontal moving pad 232 to move between the forward position and the backward position.

[0083] In this embodiment, by providing a bottom horizontal moving slide rail 231, a bottom horizontal moving pad 232, and a bottom horizontal moving cylinder 233, stable support of the workpiece support 22 can be easily achieved.

[0084] See also Figures 1 to 6 As can be seen, the press 30 is mounted on the top surface of the frame top plate 12, and includes a hydraulic station 31 and a press-fitting hydraulic cylinder 32. The hydraulic station 31 includes an oil tank and a hydraulic valve group mounted on the frame top plate 12. The press-fitting hydraulic cylinder 32 includes a press-fitting cylinder body 321 and a press-fitting piston rod 322 mounted on the top surface of the frame top plate 12. The press-fitting piston rod 322 extends from the press-fitting hydraulic cylinder 32 to the bottom of the frame top plate 12.

[0085] See also Figure 3 and Figure 6The quick-change drive mechanism 63 includes a quick-change base plate 631, a quick-change slide rail 632, a quick-change sliding plate 633 and a quick-change cylinder 634. The quick-change base plate 631 is slidably arranged along the frame column 13, and is connected to the press-fitting piston rod 322, and is driven by the press-fitting piston rod 322 to move up and down. The quick-change slide rail 632 is fixedly arranged on the lower surface of the quick-change base plate 631. The quick-change sliding plate 633 is arranged on the lower surface of the quick-change base plate 631, and is retained on the lower surface of the quick-change base plate 631 and guided by the quick-change slide rail 632. The first pressure head 61 and the second pressure head 62 are fixedly arranged on the quick-change sliding plate 633. The quick-change cylinder 634 is installed on the quick-change base plate 631 and is connected to the quick-change sliding plate 633 to drive the quick-change sliding plate 633 to move between the first horizontal position and the second horizontal position. Among them, in the first horizontal position, the first pressing head 61 is in a pressing operation position corresponding to the second central axis, and in the second horizontal position, the second pressing head 62 is in a pressing operation position corresponding to the second central axis.

[0086] In this embodiment, the quick-change sliding plate 633 carrying two pressure heads is driven by the quick-change cylinder 634 to move between two positions, thereby realizing rapid switching of the pressure heads.

[0087] See also Figure 3 and Figure 7 It can be seen that the clamp centering mechanism 50 includes a clamp vertical working part 51 and a clamp horizontal working part 52. The clamp vertical working part 51 includes a clamp column 511, a clamp vertical slide 512 that can slide vertically along the clamp column, and a clamp vertical driving part 513 that drives the clamp vertical slide 512. The clamp horizontal working part 52 includes a clamp crossbeam 521, two clamp arms 522 that can slide horizontally along the clamp crossbeam 521, and a clamp horizontal driving part 523 that drives the two clamp arms 522 to move in opposite directions.

[0088] Based on this structural configuration of the clamping and centering mechanism, the control unit can be configured to keep the clamping and centering mechanism 50 in the clamping and centering state when the quick-change ram device 60 moves downward to perform press-fitting after the clamping and centering mechanism 50 enters the centering state, and move downward synchronously with the quick-change ram device 60, and when the winding stator and the housing enter a predetermined interference fit state, control the inner support centering mechanism 40 and the clamping and centering mechanism 50 to respectively release the inner support centering state and the clamping and centering state to avoid press-fitting interference.

[0089] In this embodiment, the clamping and centering mechanism maintains the clamping and centering state and moves downward synchronously when the quick-change pressure head device 60 moves downward to perform press-fitting, which can better ensure the concentric press-fitting of the winding stator and the casing, and release the centering states of the inner support centering mechanism and the clamping and centering mechanism after the winding stator and the casing enter an interference fit state such as a predetermined fit length, which can avoid interference between the winding stator, the casing, the inner support centering mechanism and the clamping and centering mechanism during the press-fitting process, thereby ensuring smooth press-fitting and avoiding damage to equipment and products.

[0090] Here, the interference fit state of the predetermined fit length can be determined, for example, by the relative positional relationship between the winding stator and the housing in the vertical direction.

[0091] Here, the clamp vertical driving unit and the clamp horizontal driving unit both include servo motors, which can be achieved, for example, by connecting the servo motor to a worm gear mechanism.

[0092] See also Figure 7 , which shows a three-dimensional structural diagram of the clamp centering mechanism of the motor press-fitting equipment. Figure 7 As can be seen in the figure, each clamping arm 522 includes a clamping arm body 522a, a clamping arm slide rail assembly 522b and a clamping contact block 522c. The clamping arm body 522a is installed on the clamping vertical slide 512, so that the clamping centering mechanism 50 can be driven by the clamping vertical slide to move up and down as a whole. The clamping arm slide rail assembly 522b is oriented in the vertical direction and is installed on the clamping arm body 522a. The clamping contact block 522c is installed on the clamping arm slide rail assembly 522b.

[0093] Since the clamping arm 522 has a clamping contact block 522c that can slide along the clamping arm slide rail assembly 522b, it is allowed that while the winding stator is clamped and positioned by the clamping centering mechanism 50, the quick-change press head device 60, driven by the press machine 30, performs interference pressing of the winding stator for a first predetermined distance. The first predetermined distance depends on the sliding stroke range of the clamping arm slide rail assembly 522b, thereby ensuring the pressing quality.

[0094] In combination with the above-mentioned structural configuration of the clamping arm, the press-fitting operation performed by the motor press-fitting device under the control of the control unit is introduced below. The control unit can control the clamping horizontal working part 52 according to the model of the motor currently being press-fitted so that the two clamping arms 522 are separated by a predetermined distance. When the conveying plate and the pre-assembled body transported by the conveyor line arrive at the press-fitting operation position, the control unit is configured to control one or more of the workpiece support device 20, the press machine 30, the inner support centering mechanism 40, the clamp centering mechanism 50, and the quick-change press head device 60, so that the motor press-fitting device performs the following actions:

[0095] The clamp vertical driving part 513 performs a descending driving action to make the clamp horizontal working part 52 descend to a first height position of the clamp arm corresponding to the winding stator in the pre-assembled body;

[0096] Then, the clamping horizontal driving unit 523 performs a clamping driving action to clamp the clamping arm 522 on the winding stator;

[0097] Then, while the clamping arm 522 maintains the clamping state, the clamping vertical driving unit 513 first performs an ascending driving action and then performs a descending driving action, so as to drive the winding stator to first ascend and then descend in the vertical direction in the housing, so as to reach the second height position of the clamping arm;

[0098] Then, while the clamping arm 522 maintains the clamping state, the press machine 30 drives the quick-change ram device 60 to descend to the ram first height position in contact with the winding stator clamped by the clamping arm 522 to start the first press-fitting stroke until the quick-change ram device 60 descends to the ram second height position, and the clamping arm second height position is lower than the clamping arm first height position by a first predetermined distance;

[0099] Then, the quick-change ram device 60 is kept at the ram second height position, and at the same time, the clamping horizontal driving unit 523 performs the clamping release driving action to open the clamping arm to the initial position;

[0100] Then, while the clamping arm 522 remains in the open state, the press machine 30 drives the quick-change ram device 60 to start the second press-fitting stroke, and the quick-change ram device 60 descends to the ram third height position to complete the press-fitting.

[0101] The first predetermined distance and the first stroke are smaller than the sliding stroke range of the clamping arm slide rail assembly 522b.

[0102] Through such an operation process, it can be further ensured that the clamping arm can straighten and center the winding stator.

[0103] The control unit can be further configured to control the inner support centering mechanism 40 to release the inner support positioning state after the quick-change press head device 60 completes the first pressing stroke, and to lower the three-jaw chuck assembly 42 so that the three inner support claws 422 avoid being pressed downward into the winding stator in the casing.

[0104] This ensures better centering and avoids collision with the winding stator that is pressed down into the housing.

[0105] Continue to see Figure 7It can be seen that each clamping arm 522 includes two clamping arm slide rail assemblies 522b and two clamping contact blocks 522c. The two clamping contact blocks 522c are arranged in a V shape toward the second central axis, and each clamping contact block 522c is provided with an arc-shaped contact portion 522d extending along the circumferential direction of the winding stator.

[0106] In this embodiment, the clamp contact block 522c arranged in a V-shape and the arc-shaped contact portion 522d extending along the circumferential direction of the winding stator can better achieve the centering of the winding stator, thereby improving the press-fitting quality of the motor.

[0107] Let's look at it again Figure 3 It can be seen that the frame base 11 of the motor press-fitting device according to the embodiment of the present disclosure includes a frame base substrate 111, a frame base support leg 112, a frame base adjustment bolt 113 and a frame base pad 114. The frame base support leg 112 is fixedly arranged on the bottom surface of the frame base substrate 111 to support the frame base substrate 111. The frame base adjustment bolt 113 is installed on the frame base support leg 112 and extends from top to bottom, at least partially extending to the bottom of the frame base support leg 112 for height adjustment. The frame base pad 114 is arranged below the frame base adjustment bolt 113 and supports the lower end of the frame base adjustment bolt 113.

[0108] By providing the frame base adjusting bolts 113, the frame 10 can be conveniently adjusted horizontally, so that the motor press-fitting device can better press-fit the motor in the vertical direction.

[0109] The motor pressing device disclosed in the present invention can, on the one hand, automatically straighten the winding stator, and at the same time, the three claws at the bottom internally support the casing to make the casing concentric with the upper winding stator. On the other hand, it can realize quick switching of the corresponding pressing head when the motor is changed. Therefore, it is actually a concentric quick-change pressing device.

[0110] In general, the motor pressing equipment disclosed in the present invention has the following advantages: 1. fast changeover and good compatibility; 2. elimination of safety risks; and 3. concentricity of the housing and winding stator, which improves product quality and reduces scrap.

[0111] The above are only preferred embodiments of the present disclosure. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present disclosure. These improvements and modifications should also be regarded as the protection scope of the present disclosure.

Claims

1. Motor press-fitting equipment, used to press-fit the winding stator of the motor into the motor housing during motor press-fitting, including: Rack (10), A workpiece support device (20) is installed at the lower part of the frame (10) and is used to support a conveying plate conveyed by a conveying line and a pre-assembled body formed by pre-assembling the housing and the winding stator and carried by the conveying plate; A press (30) is installed on the upper part of the frame (10) and is used to provide press-fitting pressure. Characterized in that the motor press-fitting equipment also includes: An inner support centering mechanism (40) having an inner support claw (422) that can move radially relative to a first central axis and is used to cooperate with an end of a central hole of the housing to center the housing relative to the first central axis; and A clamping and centering mechanism (50) has a clamping arm (522) that can move radially relative to a second center axis and is used to cooperate with the outer surface of the winding stator to center the winding stator relative to the second center axis, wherein the second center axis is coaxially arranged with the first center axis.

2. The motor press-fitting equipment according to claim 1, characterized in that: Also includes: A quick-change press head device (60) is connected to the press machine (30) and driven by the press machine (30), comprising: a first press head (61) suitable for press-fitting a first type of motor; a second press head (62) suitable for press-fitting a second type of motor; and a quick-change drive mechanism (63) for moving the first press head (61) and the second press head (62) to selectively place one of the first press head (61) and the second press head (62) in a press-fitting operation position corresponding to the second central axis; and A control unit is connected to one or more of the workpiece support device (20), the press machine (30), the inner support centering mechanism (40), the clamp centering mechanism (50) and the quick-change press head device (60) to control their operations.

3. The motor press-fitting device according to claim 2, It is characterized in that in, The frame (10) comprises: Frame base (11); A frame top plate (12), arranged above the frame top plate (12); and A frame column (13) is connected between the frame base (11) and the frame top plate (12) to support the frame top plate (12). Wherein, the press machine (30) is mounted on the frame top plate (12), Wherein, the quick-change pressure head device (60) is slidably arranged along the frame column (13).

4. The motor press-fitting equipment according to claim 3, characterized in that: The inner support centering mechanism (40) comprises: A first bottom lifting assembly (41); The three-jaw chuck assembly (42) is arranged on the first bottom lifting assembly (41) and is lifted and lowered by the first bottom lifting assembly (41). The three-jaw chuck assembly (42) includes three inner support claws (422).

5. The motor press-fitting equipment according to claim 4, characterized in that: The workpiece supporting device (20) comprises: A second bottom lifting assembly (21) mounted on the frame base (11); A workpiece support (22) is arranged above the frame base (11) and is lifted by the second bottom lifting assembly (21) to support the conveying plate carrying the pre-assembled body conveyed by the conveying line upwardly from a first height position of the conveying plate on the conveying line to a second height position of the conveying plate away from the conveying line; A bottom movable pad assembly (23) is arranged on the frame base (11) and is used to at least partially move below the workpiece support (22) after the workpiece support (22) rises, so as to support the workpiece support (22) after the workpiece support (22) descends through the second bottom lifting assembly (21), and to ensure that the conveying plate is still at a first conveying plate height position away from the conveying line.

6. The motor press-fitting equipment according to claim 5, characterized in that: The workpiece support (22) comprises: A workpiece support body bottom plate (221) is arranged on the frame base (11); A workpiece support body top plate (222) is arranged above the workpiece support body bottom plate (221) and is used to support the conveying plate and the pre-assembled body. The workpiece support body top plate (222) is provided with a workpiece support body top plate center hole (222a) for the inner support claw (422) to pass through. A workpiece support connecting column (223) connected between the workpiece support bottom plate (221) and the workpiece support top plate (222) to support the workpiece support top plate (222); and A workpiece support body guide column (224) is connected between the workpiece support body bottom plate (221) and the workpiece support body top plate (222), Wherein, the first bottom lifting assembly (41) comprises: A first lifting cylinder (411) is installed on the frame base (11); and The lifting support plate (412) is supported by the first lifting cylinder (411), arranged between the bottom plate (221) of the workpiece support body and the top plate (222) of the workpiece support body, and has a lifting support plate guide hole that cooperates with the guide column (224) of the workpiece support body. The three-jaw chuck assembly (42) is installed on the lifting support plate (412).

7. The motor press-fitting equipment according to claim 5, characterized in that: The bottom moving pad assembly (23) comprises: A bottom horizontal movable slide rail (231) mounted on the frame base (11); A bottom horizontally movable pad (232) is disposed on the frame base (11) and is guided by the bottom horizontally movable slide rail (231); and The bottom horizontal moving cylinder (233) is installed on the frame base (11) and connected to the bottom horizontal moving pad (232) to drive the bottom horizontal moving pad (232) to move between a forward position and a backward position.

8. The motor press-fitting device according to claim 3, It is characterized in that in, The press machine (30) is mounted on the top surface of the frame top plate (12), and comprises a press-fitting hydraulic cylinder (32). The press-fitting hydraulic cylinder (32) comprises: A press-fitting cylinder (321) is mounted on the top surface of the frame top plate (12); and A press-fitting piston rod (322) extends from the press-fitting cylinder body (321) toward the bottom of the frame top plate (12). Wherein, the quick-change drive mechanism (63) comprises: A quick-change base plate (631) is slidably arranged along the frame column (13) and connected to the press-fit piston rod (322); A quick-change slide rail (632) is fixedly arranged on the lower surface of the quick-change base plate (631); A quick-change sliding plate (633) is arranged on the lower surface of the quick-change base plate (631) and is guided by the quick-change sliding rail (632), and the first pressing head (61) and the second pressing head (62) are fixedly arranged on the quick-change sliding plate (633); and A quick-change cylinder (634) is mounted on the quick-change base plate (631) and connected to the quick-change sliding plate (633) to drive the quick-change sliding plate (633) to move between a first horizontal position and a second horizontal position, wherein, in the first horizontal position, the first pressing head (61) is in a pressing operation position corresponding to the second center axis, and in the second horizontal position, the second pressing head (62) is in a pressing operation position corresponding to the second center axis.

9. The motor press-assembly equipment according to claim 2, characterized in that: in, The clamp centering mechanism (50) comprises: A clamping vertical working part (51) comprises a clamping column (511), a clamping vertical slide (512) vertically slidable along the clamping column, and a clamping vertical driving part (513) driving the clamping vertical slide (512); and The clamping horizontal working part (52) comprises a clamping crossbeam (521), two clamping arms (522) which can slide horizontally along the clamping crossbeam (521), and a clamping horizontal driving part (523) which drives the two clamping arms (522) to move in opposite directions. The control unit is configured to, after the clamping centering mechanism (50) enters the centering state, enable the clamping centering mechanism (50) to maintain the clamping centering state when the quick-change ram device (60) moves downward to perform press-fitting, and move downward synchronously with the quick-change ram device (60), and when the winding stator and the housing enter a predetermined interference fit state, control the inner support centering mechanism (40) and the clamping centering mechanism (50) to release the inner support centering state and the clamping centering state respectively to avoid press-fitting interference.

10. The motor press-assembly equipment according to claim 9, characterized in that: Each of the clamping arms (522) comprises: A clamping arm body (522a) is mounted on the clamping vertical slide (512); A clamping arm slide rail assembly (522b), oriented in a vertical direction, mounted on the clamping arm body (522a); and The clamping contact block (522c) is installed on the clamping arm slide rail assembly (522b).

11. The motor press-assembly equipment according to claim 10, characterized in that: Each of the clamping arms (522) comprises two clamping arm slide rail assemblies (522b) and two clamping contact blocks (522c), and the two clamping contact blocks (522c) are arranged in a V shape toward the second central axis, and Each of the clamping contact blocks (522c) is provided with an arc-shaped contact portion (522d) extending along the circumferential direction of the winding stator.

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