Core lamination tooling and core lamination module

Abstract

The present invention discloses a core stacking tool, comprising a base for supporting an iron core and a plurality of dovetail keys arranged along a circle to be centrally symmetrically placed for respectively inserting into the dovetail grooves of the iron core, wherein the relative position between the dovetail keys and the base is adjusted along the radial direction of the circle by an adjusting mechanism. The core stacking tool connects the dovetail keys to the base through an adjusting mechanism, so that the dovetail keys can be radially movable, so that when the core is in the middle position, it is convenient to put the core in, and when it moves outward, the core can be positioned, and when it moves radially inward, the core can be fixed, so as to facilitate subsequent welding and other operations. In summary, the core stacking tool can effectively solve the problem of inconvenient core stacking molding at present. The present invention also discloses a core stacking module including the above-mentioned core stacking tool.

Description

Technical Field

[0001] The present invention relates to the technical field of iron core manufacturing, and more specifically, to an iron core laminating tool, and also to an iron core laminating module comprising the iron core laminating tool. Background Art

[0002] The linear motor for oilfield equipment is made of many stator cores combined together. Therefore, the quality of the stator core production seriously affects the performance of the subsequent whole machine operation. In addition, the production of a large number of stator cores is labor-intensive and requires the use of a batch production process.

[0003] The current operation method is to manually position the punching sheets and gear sheets through dovetail keys and stack them into the stacking die for press-fitting. The final demolding method is also to manually knock them out. The manual labor intensity is high, and the roundness quality of the outer circle of the core after stacking is low, which affects the subsequent motor performance and is not suitable for mass production.

[0004] In summary, how to effectively solve the inconvenience of the current core stacking molding problem is an urgent problem that technicians in this field need to solve. Summary of the invention

[0005] In view of this, the first object of the present invention is to provide a core stacking tool, which can effectively solve the problem of inconvenient core stacking molding at present. The second object of the present invention is to provide a core stacking module including the above-mentioned core stacking tool.

[0006] In order to achieve the above first object, the present invention provides the following technical solutions:

[0007] A core stacking tool comprises a base for supporting an iron core and a plurality of dovetail keys arranged along a circle to be centrally symmetrical and respectively inserted into dovetail grooves of the iron core. The relative position between the dovetail keys and the base is adjusted along the radial direction of the circle by an adjustment mechanism.

[0008] In the core stacking tooling, when in use, it is suitable for the core whose dovetail groove is slightly larger than the dovetail key portion, and then the radial position of the dovetail key is adjusted by the adjustment mechanism so that the dovetail key portion is located in the middle of the corresponding dovetail groove, and then the punching sheets and tooth sheets of the core are placed one by one. Because the dovetail key portion is centered, the dovetail groove on the core tooth sheet and the punching sheet can be conveniently mounted on the dovetail key portion. After the punching sheets and tooth sheets are placed, the adjustment mechanism drives the dovetail key to move radially outward until it abuts against the two side walls of the dovetail groove. At this time, the dovetail key positions the corresponding dovetail groove, and then positions the entire core; then the adjustment mechanism pushes each dovetail key to move toward the center until it abuts against the bottom wall of the dovetail groove. At this time, each dovetail key shrinks toward the center, thereby achieving the extrusion and fixation of the core. The core stacking tool connects the dovetail key to the base through an adjustment mechanism, so that the dovetail key can move radially, so that when it is in the middle position, it is convenient to put the core in, and when it moves outward, the core can be positioned, and when it moves radially inward, the core can be fixed, so as to facilitate later welding and other operations. In summary, the core stacking tool can effectively solve the problem of inconvenient core stacking molding at present.

[0009] Preferably, the external connection portion of the radial outer end of the dovetail key slides radially with the base, and the adjustment mechanism includes an adjusting screw and an elastic device. The adjusting screw is threadedly connected to the base and abuts against the outer end of the dovetail key to push the dovetail key to move radially, and the elastic device is used to prevent the dovetail key from moving radially inward.

[0010] Preferably, the base includes a supporting base and a plurality of U-shaped seats evenly arranged along the circumference of the supporting base, the U-shaped seat is protrudingly arranged on the table surface side of the supporting base, the external connection portion is located in the inner groove cavity of the U-shaped seat, the adjusting screw is arranged through the bottom of the groove of the U-shaped seat and is threadedly matched therebetween, the inner end of the elastic device is abutted against the side surface of the supporting base, and the outer end is abutted against the dovetail key.

[0011] Preferably, the inner side of the dovetail key has a mounting groove for accommodating the elastic device, and the inner end surfaces of each of the U-shaped seats are on the same cylindrical side surface.

[0012] Preferably, it also includes a positioning core mold, and the supporting table surface of the base is provided with a positioning hole at the center position of the circumference. The positioning core mold includes a first positioning column matching the positioning hole and a second positioning column arranged at one end of the first positioning column and coaxially arranged with each other, the diameter of the second positioning column is smaller than the diameter of the circumference where the inner surface of each dovetail key is located and larger than the diameter of the first positioning column; the outer diameter of the first positioning column matches the inner hole diameter of the core punching sheet, and the outer diameter of the second positioning column matches the inner hole diameter of the tooth sheet of the core.

[0013] Preferably, it further comprises a first positioning pin, the first positioning pin is slidably matched with the support table along the direction of the support table, and the second positioning column is provided with an avoidance groove or avoidance hole matched with the first positioning pin.

[0014] Preferably, a pressing plate is further included, and a third positioning column is provided at one end of the second positioning column away from the first positioning column, and the third positioning column is slidably matched with the hole in the pressing plate along the direction of the supporting table surface.

[0015] Preferably, a screw hole is provided on an end face of the third positioning column away from the second positioning column, and a second positioning pin extending in the direction of the support table is provided between the pressure plate and the second positioning column, and both ends of the second positioning pin are respectively inserted into the pressure plate and the second positioning column.

[0016] In order to achieve the above second purpose, the present invention also provides a core stacking module, which includes any of the above core stacking tools, and also includes a core, the key parts of each dovetail key of the core stacking tool are respectively located in each dovetail groove of the core, and the cross-section of the dovetail key is smaller than the cross-section of the dovetail groove. Since the above core stacking tool has the above technical effects, the core stacking module having the core stacking tool should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of the core lamination tooling provided in an embodiment of the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the core lamination tooling AA surface;

[0020] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the core stacking tooling BB surface.

[0021] The following are marked in the accompanying drawings:

[0022] Dovetail key 1, adjusting screw 2, elastic device 3, supporting base 4, U-shaped seat 5, positioning core mold 6, first positioning pin 7, second positioning pin 8, pressure plate 9, iron core 10, punching sheet 101, gear sheet 102. DETAILED DESCRIPTION

[0023] The embodiment of the invention discloses an iron core stacking tool to effectively solve the problem of inconvenient iron core stacking molding at present.

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-Figure 3 , Figure 1 A schematic diagram of the structure of the core lamination tooling provided in an embodiment of the present invention;

[0026] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the core lamination tooling AA surface; Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the core stacking tooling BB surface.

[0027] In a specific embodiment, this embodiment provides a core stacking tool. Specifically, the core stacking tool includes a base and a plurality of dovetail keys 1.

[0028] The base is preferably provided with a support table to support the iron core 10. In order to better preliminarily position the iron core 10, a slot body matching the outer periphery of the iron core 10 can be formed, and the outer diameter of the slot body matches the clearance between the iron core 10 to ensure that the iron core 10 has sufficient margin for movement. It should be noted that the iron core 10 includes a plurality of stacked punching sheets 101 and a plurality of stacked tooth sheets 102, and the dovetail grooves on each punching sheet 101 and the dovetail grooves on each tooth sheet 102 are aligned.

[0029] A plurality of dovetail keys 1 are arranged along the circumference to be placed symmetrically along the center so as to be inserted into the dovetail grooves of the core 10 respectively. When in use, the key portion of the dovetail key 1 is inserted into the corresponding dovetail grooves on each punching sheet 101 and the corresponding dovetail grooves on each tooth sheet 102 so as to be positioned. It should be noted that when in use, the cross-section of the key portion of the dovetail key 1 between the selected core stacking tooling and the target core 10 should be slightly smaller than the cross-section of the dovetail groove of the core 10. It should be noted that the number of dovetail keys 1 is not more than the number of circumferential dovetail grooves of the core, and can be less than, but at least two dovetail keys 1 are provided so as to determine the center position of the core 10. Specifically, it is preferred to provide three dovetail keys 1 with an angle of 120 degrees between each other.

[0030] The relative position between the dovetail key 1 and the base is adjusted along the circumferential radial direction by an adjusting mechanism, that is, the adjusting mechanism can drive the dovetail key 1 to move radially toward the center, or radially away from the circumferential center. It should be noted that each dovetail key 1 can move toward the center or away from the center at the same time, or can move toward the center separately. The adjusting mechanism can be a combination of a sliding mechanism and a locking screw, or a combination of a crank slider mechanism and a motor, wherein the motor is mounted on the base, and the slider of the crank slider mechanism is connected to the dovetail key 1.

[0031] In the core stacking tooling, when in use, it is suitable for the core 10 whose dovetail groove is slightly larger than the key part of the dovetail key 1, and then the radial position of the dovetail key 1 is adjusted by the adjustment mechanism so that the key part of the dovetail key 1 is located in the middle of the corresponding dovetail groove, and then the punching sheet 101 and the tooth piece 102 of the core 10 are placed one by one. Because the key part of the dovetail key is centered, the tooth piece 102 of the core 10 and the dovetail groove on the punching sheet 101 are conveniently sleeved on the key part of the dovetail key 1. After the punching sheet 101 and the tooth piece 102 are placed, the adjustment mechanism drives the dovetail key 1 to move radially outward until it abuts against the groove walls on both sides of the dovetail groove. At this time, the dovetail key 1 positions the corresponding dovetail groove, and then positions the entire core 10; then the adjustment mechanism pushes each dovetail key 1 to move toward the center until it abuts against the groove bottom wall of the dovetail groove. At this time, each dovetail key shrinks toward the center, thereby achieving the extrusion and fixation of the core 10. The core stacking tool connects the dovetail key 1 to the base through an adjustment mechanism, so that the dovetail key 1 can move radially, so that when it is in the middle position, it is convenient to put the core 10 in, and when it moves outward, the core 10 can be positioned, and when it moves radially inward, the core 10 can be fixed, so as to facilitate later welding and other operations. In summary, the core stacking tool can effectively solve the problem of inconvenient core stacking molding at present.

[0032] It should be noted that the dovetail key 1 may only include a key portion, that is, the cross section of the dovetail key 1 is only dovetail-shaped. In order to facilitate the connection, the dovetail key may include not only a key portion, but also an external portion connected to the key portion, wherein the key portion refers to a structure with a dovetail-shaped cross section. Further, in order to facilitate the radial position adjustment of the dovetail key 1, it is preferred that the dovetail key 1 is mainly composed of two parts, that is, the dovetail key 1 mainly includes a key portion and an external portion located at the radial outer end, wherein the external portion can be directly connected to the key portion, wherein the external portion is preferably rectangular in cross section, and the edge connected to the short side end of the key portion is equal in length to the short side end of the key portion and aligned with each other, or the former may be smaller than the latter, so as to at least ensure that the external portion can enter from the notch of the dovetail groove. The external portion and the base are radially slidably matched along the above-mentioned circumference. The adjusting mechanism includes an adjusting screw 2 and an elastic device 3, wherein the adjusting screw 2 is threadedly connected to the base and abuts against the outer end of the dovetail key 1 to push the dovetail key 1 to move radially. It can directly abut against the outer end of the external connection part. If there is an exposed part at the outer end of the dovetail key 1, it can also abut against the exposed part of the outer end of the dovetail key 1. The elastic device 3 is used to prevent the dovetail key 1 from moving radially inward, so that when the adjusting screw 2 pushes the dovetail key 1 to move radially inward, the elastic device 3 is deformed, and when the adjusting screw 2 retreats, the elastic deformation force of the elastic device 3 pushes the dovetail key 1 to move radially outward.

[0033] It should be noted that when in use, the elastic device 3 should be able to push the key portion of the dovetail key 1 to move to the notch of the dovetail groove of the iron core 10, that is, correspondingly, a dovetail groove can be provided on the support base 4, and the specific position and size of the dovetail groove can correspond to the position and size of the dovetail groove of the iron core 10, so that the dovetail grooves on the support base 4 can be completely aligned with the dovetail grooves on the iron core 10, that is, correspondingly, the lower part of the key portion of the dovetail key 1 is inserted into the dovetail groove on the side of the support base 4, and the cross-section of the key portion of the dovetail key is smaller than the cross-section of the dovetail groove on the support base, so that when the locking screw is loosened, the elastic device 3 can push the two sides of the key portion of the dovetail key 1 to collide with the two side groove walls of the dovetail groove on the support base 4.

[0034] The adjusting screw 2 and the elastic device 3 can be installed accordingly as needed, and specifically, a corresponding mounting portion can be formed on the base to facilitate installation. Specifically, it is preferred that the base includes a supporting base 4 and a plurality of U-shaped seats 5 evenly arranged along the circumference of the supporting base 4, wherein the U-shaped seat 5 is protrudingly arranged on the table surface side of the supporting base 4, and the external connection portion of the dovetail key 1 is located in the inner groove cavity of the U-shaped seat 5, and the sliding fit therebetween, and the adjusting screw 2 is set through the bottom of the groove of the U-shaped seat 5 and the threads are fitted therebetween, and the adjusting screw 2 is set through the U-shaped seat 5, that is, one end of the adjusting screw 2 is located in the groove cavity of the U-shaped seat, and is against the dovetail key 1, mainly against the external connection portion, and the other end of the adjusting screw 2 is located outside the U-shaped seat 5 to facilitate the application of torque, and a screw head can be provided to facilitate the application of torque. In order to better guide the force, it is preferred that the lower part of the dovetail key 1 is slidably fitted up and down with the supporting base 4.

[0035] The inner end of the elastic device 3 abuts against the side of the support base 4, and the outer end abuts against the dovetail key 1, so as to push the dovetail key 1 to move radially outward. In order to facilitate the installation of the elastic device 3, the inner side of the dovetail key 1 can be provided with a mounting groove for accommodating the elastic device 3, wherein the outer end of the elastic device 3 is inserted into the mounting groove, and the outer diameter matches the mounting groove, so as to be limited by the mounting groove, and the inner end of the elastic device abuts against the side of the support base 4, and of course, it can also be embedded in the support base 4.

[0036] Each U-shaped seat 5 is protrudingly arranged on the table side of the support base 4, so that the U-shaped seat 5 can still limit the external connection part of the dovetail key on the table side of the support base 4. Further, the inner end faces of each U-shaped seat 5 can be on the same cylindrical side surface, thereby forming the outer periphery positioning of the iron core 10, that is, the cylindrical side surface cooperates with the outer side surface of the iron core 10 to perform preliminary positioning on the punching sheet 101 and the tooth piece 102 of the iron core 10, so as to facilitate the dovetail grooves of the punching sheet 101 and the tooth piece 102 to dock with the key part of the dovetail key 1.

[0037] Furthermore, in order to better position the punch 101 and the tooth piece 102, it is preferred that a positioning core mold 6 is also included here, wherein the support table of the base is provided with a positioning hole at the center of the circumference, that is, the table of the above-mentioned support base 4 is provided with a positioning hole. The positioning core mold 6 includes a first positioning column matched with the positioning hole and a second positioning column arranged at one end of the first positioning column, wherein the first positioning column and the second positioning column are coaxially arranged, wherein the diameter of the second positioning column is smaller than the diameter of the circumference of the inner surface of each dovetail key 1 and larger than the diameter of the first positioning column, so that the outer diameter of the first positioning column can match the inner diameter of the punch 101 of the core 10, and the outer diameter of the second positioning column can match the inner diameter of the tooth piece 102 of the core 10.

[0038] Furthermore, in order to facilitate the circumferential positioning of the punch plate 101 and / or the tooth plate 102, it is preferred that a first positioning pin 7 is also included here, wherein the first positioning pin 7 is slidably matched with the support table along the direction of the support table, that is, it is slidably matched with the corresponding pin hole on the support base 4, and is not coaxially arranged with the above-mentioned circumference, so as to enable circumferential positioning. Correspondingly, the second positioning column is provided with an avoidance groove or avoidance hole that cooperates with the first positioning pin 7, and preferably a U-shaped groove is opened on the outer edge of the second positioning column to serve as the above-mentioned avoidance groove.

[0039] In order to be able to position each tooth piece 102 and each punching piece 101 of the iron core 10 in the axial direction, it is preferred here to also include a pressure plate 9, and a third positioning column is provided at one end of the second positioning column away from the first positioning column, and the third positioning column and the hole in the pressure plate 9 slide in the direction of the support table surface to press down the iron core 10 through the pressure plate 9, and the support table surface is set upward at this time. In actual use, the third positioning, the second positioning column and the first positioning column are all coaxially arranged, and the diameters of the second positioning column, the third positioning column and the first positioning column gradually decrease, and the diameter of the pressure plate 9 is larger than the diameter of the second positioning column, preferably equal to the diameter of the circle surrounded by the inner end faces of all the above-mentioned U-shaped seats 5, and in actual applications, the diameter of the circle surrounded by the inner end faces of all the U-shaped seats 5 is slightly larger than the outer diameter of the iron core 10 to allow the clearance between them to fit.

[0040] Furthermore, in order to facilitate installation, it is preferred that a screw hole is provided on the end face of the third positioning column away from the second positioning column, and a second positioning pin 8 extending in the direction of the support table is provided between the pressure plate 9 and the second positioning column, and the two ends of the second positioning pin 8 are respectively inserted into the pressure plate 9 and the second positioning column, so that the second positioning pin positions the pressure plate 9 and the second positioning column.

[0041] Based on the core stacking tooling provided in the above embodiments, the present invention further provides a core stacking module, which includes any one of the core stacking tooling in the above embodiments, including an iron core, and the key portions of each dovetail key of the core stacking tooling are respectively located in each dovetail groove of the iron core, and the cross-section of the dovetail key key portion is smaller than the cross-section of the dovetail groove. Since the core stacking module adopts the core stacking tooling in the above embodiments, please refer to the above embodiments for the beneficial effects of the core stacking module.

[0042] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0043] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A core lamination tool, characterized in that: The invention comprises a base for supporting an iron core and a plurality of dovetail keys arranged along a circle to be centrally symmetrically placed and respectively inserted into the dovetail grooves of the iron core, wherein the relative position between the dovetail key and the base is adjusted along the radial direction of the circle by an adjusting mechanism; the external connection portion at the radial outer end of the dovetail key is radially slidably matched with the base, the adjusting mechanism comprises an adjusting screw and an elastic device, the adjusting screw is threadedly connected with the base and abuts against the outer end of the dovetail key to push the dovetail key to move radially, and the elastic device is used to prevent the dovetail key from moving radially inward; the base comprises a supporting base and a plurality of U-shaped seats uniformly arranged along the circumference of the support base, the U-shaped seat is protrudingly arranged on the table surface side of the support base, the external connection portion is located in the inner groove cavity of the U-shaped seat, the adjusting screw is arranged through the bottom of the groove of the U-shaped seat and the threads are matched therebetween, the inner end of the elastic device is against the side surface of the support base, and the outer end is against the dovetail key; the inner side of the dovetail key has a mounting groove for accommodating the elastic device, and the inner end faces of each of the U-shaped seats are on the same cylindrical side surface; the radial position of the dovetail key is adjusted by the adjusting mechanism so that the dovetail key portion is located in the middle position of the corresponding dovetail groove.

2. The core lamination tooling according to claim 1, characterized in that: It also includes a positioning core mold, the support table of the base is provided with a positioning hole at the center position of the circumference, the positioning core mold includes a first positioning column matched with the positioning hole and a second positioning column arranged at one end of the first positioning column and coaxially arranged with each other, the diameter of the second positioning column is smaller than the diameter of the circumference of the inner side surface of each dovetail key and larger than the diameter of the first positioning column; the outer diameter of the first positioning column matches the inner hole diameter of the iron core punching sheet, and the outer diameter of the second positioning column matches the inner hole diameter of the tooth sheet of the iron core.

3. The core lamination tooling according to claim 2, characterized in that: It also includes a first positioning pin, which is slidably matched with the support table along the direction of the support table, and the second positioning column is provided with an avoidance groove or avoidance hole that matches the first positioning pin.

4. The core lamination tooling according to claim 3, characterized in that: It also includes a pressing plate, and a third positioning column is provided at one end of the second positioning column away from the first positioning column, and the third positioning column is slidably matched with the hole in the pressing plate along the direction of the supporting table surface.

5. The core lamination tooling according to claim 4, characterized in that: A screw hole is provided on an end face of the third positioning column away from the second positioning column, and a second positioning pin extending along the direction of the support table is provided between the pressure plate and the second positioning column, and both ends of the second positioning pin are respectively inserted into the pressure plate and the second positioning column.

6. A core stacking module, comprising an iron core, characterized in that it also includes an iron core stacking tooling as described in any one of claims 1 to 5, wherein the key portions of each dovetail key of the core stacking tooling are respectively located in each dovetail groove of the iron core, and the cross-section of the key portion of the dovetail key is smaller than the cross-section of the dovetail groove.

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