Rotor or stator iron core pressing rivet device

Abstract

The utility model belongs to the technical field of rotor or stator processing, and particularly relates to a rotor or stator iron core pressing rivet device. A rotor or stator iron core rivet pressing device comprises a pressing head and a bearing table located below the pressing head, the bearing table is used for containing a rotor iron core or a stator iron core and provided with a plurality of punches used for enabling the ends of rivets to deform, and the rotor or stator iron core rivet pressing device is characterized in that a guide hole which is opened upwards and extends vertically is formed in the center of the bearing table; the guide hole is internally provided with a core shaft which is in sliding fit with the guide hole, the core shaft is used for circumferentially positioning the rotor iron core or the stator iron core, the core shaft is matched with a driver, and the core shaft can upwards extend out of the guide hole or downwards retract into the guide hole in the driver. The utility model has the advantage that an operator can conveniently take out the rotor or stator iron core.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotor or stator processing, and particularly relates to a rotor or stator iron core pressure riveting device. Background Art

[0002] The core of the rotor or stator of the motor is composed of several stacked punching sheets, which are fixed by riveting. For example, the Chinese patent with application number 201621245946.5 discloses a motor rotor core stacking riveting tool, including an upper pressing plate, a lower pressing plate and a bottom plate arranged from top to bottom, the rotor core to be riveted is stacked and placed between the upper pressing plate and the lower pressing plate, the center of the bottom plate is fixed with a core shaft that passes through the lower pressing plate and the rotor core to the upper pressing plate, at least three rivet rods that penetrate the rotor core punching sheets are evenly distributed along the circumference of the rotor core, the bottom surface of the upper pressing plate has a countersunk hole corresponding to the upper end of the rivet rod for pressing out the upper rivet head, and the lower bottom plate is provided with a pin corresponding to the lower end of the rivet rod for pressing out the lower rivet head.

[0003] The above scheme requires the operator to remove the rotor core mounted on the core shaft after completing the riveting of the rotor core; the core shaft is used to position the rotor core, and the gap between the outer wall of the core shaft and the inner wall of the rotor core is small and the precision is high, so it is more troublesome for the operator to remove the rotor core. Utility Model Content

[0004] The utility model aims to provide a rotor or stator core riveting device which is convenient for operators to take out the rotor or stator core.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a rotor or stator core riveting device, comprising a pressure head and a supporting platform located below the pressure head, the supporting platform is used to place the rotor core or the stator core and is provided with a plurality of punches for deforming the end of the rivet, characterized in that: a guide hole opening upward and extending vertically is provided at the center of the supporting platform, a core shaft slidingly matched with the guide hole is provided in the guide hole, the core shaft is used for circumferential positioning of the rotor core or the stator core, the core shaft is equipped with a driver, and the core shaft can extend upward to the outside of the guide hole or retract downward into the guide hole when the driver is driven.

[0006] When the present solution is in use, the operator controls the driver to extend the core shaft out of the guide hole, then adjusts the circumferential position of the rotor core or the stator core so that the rivet hole is aligned with the punch below, and sets the rotor core or the stator core on the outside of the core shaft so that the circumferential outer wall of the core shaft contacts and cooperates with the circumferential inner wall of the rotor core or the stator core, then inserts the rivet into the rivet hole, starts the press so that the pressure head presses down the rotor core or the stator core so that the end of the rivet is deformed, thereby completing the riveting operation of the rotor core or the stator core, then the operator controls the driver to retract the core shaft downward into the guide hole so that the core shaft does not contact the rotor core or the stator core, and then the operator can take out the rotor core or the stator core.

[0007] Among them, the core shaft can have any existing limiting structure for limiting the circumferential rotation of the rotor core or the stator core, for example, a limiting protrusion, which extends into the slot of the rotor core or the stator core to limit the circumferential position of the rotor core or the stator core.

[0008] This solution realizes vertical movement of the core shaft through a driver, thereby facilitating the removal of the rotor core or the stator core after the press riveting is completed.

[0009] Preferably, the supporting platform is provided with at least three matching holes which are arranged in a circular pattern with the center of the guide hole as the center of the circle. The matching holes are open upward and support members and elastic members are arranged in sequence from top to bottom in the matching holes. Under the action of the elastic members, the support members can extend upward out of the matching holes to support the rotor core or the stator core; when the pressure head is pressed downward, the support members can retract downward into the matching holes.

[0010] The support member is extended out of the matching hole in advance to support the rotor core or the stator core, so that when the pressure head presses down the rotor core or the stator core, the punching sheet of the rotor core or the stator core can be pressed in advance, and when the pressure head continues to descend, the support member will retract into the matching hole, and the lower end surface of the rotor core or the stator core will contact the bearing platform, and at the same time, the rivet will contact the punch, and the punch will deform the rivet to complete the riveting. By setting the support member, it can be ensured that the punching sheet of the rotor core or the stator core is in a compressed state during riveting. At the same time, after the riveting is completed, the pressure head rises, and the support member will extend upward under the action of the elastic member and push the rotor core or the stator core upward for a short distance, further facilitating the removal of the rotor core or the stator core. Among them, the elastic member can be a spring or a component made of polyurethane.

[0011] Preferably, the matching hole includes a narrow section and a wide section from top to bottom, and the support member includes a thin section and a thick section from top to bottom. The thin section is slidably matched with the narrow section, and the thick section is slidably matched with the wide section. The connection between the narrow section and the wide section forms a step structure to limit the extreme position of the support member extending upward.

[0012] The connection between the narrow section and the wide section forms a step structure to limit the upper extension limit position of the support member, so that when the support member is pushed out by the elastic member, the height of all the support members is the same, thereby ensuring that the rotor core or the stator core is in a horizontal state.

[0013] Preferably, a vertically extending mounting groove is provided at the circumferential edge of the core shaft, the mounting groove is laterally open outward, a convex strip is inserted into the mounting groove, the convex strip extends outward to the circumferential outer side of the core shaft, and the convex strip is used to extend into the groove of the rotor core or the stator core to position the circumferential position of the punching sheet of the rotor core or the stator core.

[0014] By setting the installation groove and the convex strip, the core shaft and the convex strip are not integrally arranged but detachably arranged. The core shaft does not need to be processed into a convex strip by wire cutting. The outer circle of the core shaft can be directly ground to ensure the accuracy and smoothness of the core shaft, so that the rotor core or the stator core can be better positioned.

[0015] Preferably, the mounting groove is a T-shaped groove, and the outer wall of the convex strip is in contact with and fits with the groove wall of the T-shaped groove.

[0016] The T-shaped groove can limit the position of the convex strip along the circumferential direction of the core shaft so that the convex strip will not be offset, and it is also convenient for the disassembly and assembly of the convex strip.

[0017] Preferably, the upper end surface of the core shaft is equipped with an upper cover, the upper cover and the core shaft are detachably fixed, and the upper cover is used to limit the axial position of the convex strip.

[0018] When the core shaft is extended or retracted, the axial position of the convex strip is limited by the upper cover, so that the convex strip can be prevented from contacting the rotor core or the stator core and causing axial movement.

[0019] Preferably, the support platform is detachably fixed on a base, the base is provided with the driver, and the core shaft and the output end of the driver are detachably fixed.

[0020] The bearing platform and the base are detachably fixed, and the core shaft and the output end of the driver are detachably fixed, so that the bearing platform and the core shaft can be easily replaced, so that rotor cores or stator cores of different sizes can be riveted, and the versatility is better.

[0021] Preferably, the supporting platform is provided with a plurality of placement holes which are arranged in a circular shape evenly spaced apart with the center of the guide hole as the center of the circle, the placement holes are open upward, and the punch is arranged in the placement holes; when the rotor core or the stator core is supported on the support, the punch does not contact the rivet.

[0022] The placement hole can limit the position of the punch to ensure that the punch is vertically upward; at the same time, when the punch is not pressed down, the rotor core or the stator core is supported on the support, and the punch does not contact the rivet, which can prevent the rivet from deforming when the punch is not pressed, thereby affecting the riveting effect.

[0023] The utility model has the advantage that it is convenient for operators to take out the rotor or stator iron core after the pressure riveting is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model when the workpiece is being riveted.

[0025] Figure 2 for Figure 1 Schematic diagram of the structure after removing the pressure head.

[0026] Figure 3 for Figure 2 Enlarged view of point A.

[0027] Figure 4 It is a schematic diagram of the structure at the core shaft.

[0028] Figure 5 for Figure 2 sectional view of .

[0029] Figure 6 for Figure 5 Enlarged view of point B.

[0030] Figure 7 It is a cross-sectional view of the support member and the elastic member.

[0031] Figure 8 This is a schematic diagram of the structure after the upper cover of the mandrel is removed.

[0032] Figure numbers: 1, bottom plate; 11, base; 2, driver; 21, output end of driver; 3, bearing platform; 31, upper part of bearing platform; 32, lower part of bearing platform; 4, pressing head; 5, core shaft; 51, upper cover; 6, convex strip; 7, supporting member; 71, elastic member; 8, punch; 100, stator core; 101, stator core slot; 102, rivet hole. DETAILED DESCRIPTION

[0033] The utility model is further described below based on the accompanying drawings and specific embodiments.

[0034] In this embodiment, the workpiece to be riveted is a stator core 100 .

[0035] like Figure 1 , Figure 2 and Figure 4As shown, this embodiment discloses a rotor or stator core riveting device, including a pressure head 4 and a bearing platform 3 located below the pressure head 4 and used to support the stator core 100; the bearing platform 3 includes a bearing platform upper part 31 and a bearing platform lower part 32 from top to bottom, and bolts are passed between the bearing platform upper part 31 and the bearing platform lower part 32 to achieve detachable fixation of the two. A first annular protrusion extending downward is provided at the center of the bearing platform upper part 31, and the outer wall of the first annular protrusion contacts and cooperates with the inner wall of the inner hole of the bearing platform lower part 32, thereby achieving positioning between the two. The bearing platform 3 is detachably fixed on the base 11, and a second annular protrusion extending downward is provided at the lower end of the bearing platform lower part 32, and the outer wall of the second annular protrusion contacts and cooperates with the inner wall of the inner hole of the base 11, thereby achieving positioning between the bearing platform 3 and the base 11. The base 11 is fixed on the bottom plate 1, and a driver 2 is fixed at the bottom of the bottom plate 1. The driver 2 is a cylinder, and the output end 21 of the driver passes through the inner holes of the base 11 and the bearing platform 3 from bottom to top. Among them, the pressing head 4 can be any pressing head used for riveting the stator core 100, and the pressing head 4 has a clearance hole for making way for the core shaft 5, and the hole of the clearance hole is larger than the diameter of the core shaft 5.

[0036] like Figures 2 to 8 As shown, the output end 21 of the driver is threadedly matched with the mandrel 5, and the upper part 31 of the bearing platform is provided with a guide hole opening upward, the guide hole extends vertically, and the mandrel 5 is slidably matched in the guide hole, and the circumferential outer wall of the mandrel 5 is in contact with the circumferential inner wall of the guide hole. The circumferential outer wall of the mandrel 5 can be in contact with the inner wall of the stator core 100 (the radial inner wall of the stator teeth), so as to realize the positioning of the stator core 100. Under the action of the driver 2, the mandrel 5 can extend upward to the outside of the guide hole, or retract inward into the guide hole. The circumferential edge of the mandrel 5 is provided with an axially extending and laterally outwardly opening mounting groove, the mounting groove is a T-shaped groove, and a convex strip 6 is inserted into the mounting groove, the convex strip 6 is T-shaped and matches the T-shaped groove, and the convex strip 6 extends outward to the circumferential outer side of the mandrel 5. The convex strip 6 can extend into the stator core slot 101 to limit the circumferential position of the stator core 100. The upper end of the core shaft 5 is equipped with an upper cover 51, which is fixed to the core shaft 5 by bolts, and the upper cover 51 can cover the convex strip 6 to limit the axial position of the convex strip 6. The width of the portion of the convex strip 6 located outside the core shaft 5 is the same as the width of the stator core slot 101.

[0037] like Figure 3 , Figure 6 and Figure 8As shown, the support platform 3 is provided with four open matching holes, and the four matching holes are circular with the center of the guide hole, and are evenly spaced in a ring. A support member 7 and an elastic member 71 located at the lower end of the support member 7 are provided in each matching hole, and the elastic member 71 is made of polyurethane material. The support member 7 has a tendency to move upward under the action of the elastic member 71. The matching hole includes a narrow section and a wide section connected to each other from top to bottom, and the support member 7 includes a thin section and a thick section from top to bottom, the thin section is slidably fitted in the narrow section, and the thick section is slidably fitted in the wide section. The connection between the thin section and the thick section of the matching hole forms a step structure to limit the extreme position of the rise of the support member 7. The elastic member 71 is arranged in the thick section and slidably fits with the thick section.

[0038] like Figure 4 , Figure 6 and Figure 8 As shown, four placement holes are provided in the supporting platform 3. The four placement holes are arranged in a circular shape with the center of the guide hole as the center. A punch 8 is provided in each placement hole. The upper end of the punch 8 has a cross-shaped punch protrusion, and the top of the punch protrusion is flush with the supporting platform 3.

[0039] During the riveting process of the stator core 100, a rivet (not shown in the figure) is first inserted into the rivet hole 102, and then the operator starts the driver 2 to make the core shaft 5 extend upward to the outside of the supporting platform 3. The operator adjusts the circumferential position of the stator core 100 so that the rivet of the stator core 100 is aligned with the punch 8 below, and then the stator core 100 is sleeved on the core shaft 5 so that the support member 7 supports the stator core 100. During the sleeve process of the stator core 100, the convex strip 6 extends into the stator core slot 101, thereby completing the circumferential positioning of the stator core 100. After that, the operator starts the press (not shown in the figure), the pressure head 4 moves downward, the punching sheet of the stator core 100 is pressed by the pressure head 4, and the elastic member 71 contracts, causing the support member 7 to descend, and the lower end surface of the stator core 100 contacts the upper end surface of the support platform 3, and finally the lower end of the rivet contacts the punch 8 and deforms, thereby completing the press riveting of the stator core 100. After that, the operator raises the pressure head, and the support member 7 lifts the stator core 100 under the action of the elastic member 71. The operator starts the driver 2 to shrink the core shaft 5 into the guide hole, and finally takes out the stator core 100.

Claims

1. A rotor or stator core riveting device, comprising a pressure head and a bearing platform located below the pressure head, wherein the bearing platform is used to place the rotor core or the stator core and is provided with a plurality of punches for deforming the ends of the rivets, characterized in that: A guide hole which opens upward and extends vertically is provided at the center of the support platform, and a core shaft which slides with the guide hole is provided in the guide hole. The core shaft is used for circumferential positioning of the rotor core or the stator core. The core shaft is equipped with a driver, and the core shaft can extend upward out of the guide hole or retract downward into the guide hole when the driver is turned on.

2. The rotor or stator core riveting device according to claim 1, characterized in that: The supporting platform is provided with at least three matching holes which are arranged in a circular pattern with the center of the guide hole as the center of the circle. The matching holes are open upward and support members and elastic members are arranged in sequence from top to bottom in the matching holes. Under the action of the elastic members, the support members can extend upward out of the matching holes to support the rotor core or the stator core; when the pressure head is pressed downward, the support members can retract downward into the matching holes.

3. The rotor or stator core riveting device according to claim 2, characterized in that: The matching hole includes a narrow section and a wide section from top to bottom, and the support member includes a thin section and a thick section from top to bottom. The thin section is slidably matched with the narrow section, and the thick section is slidably matched with the wide section. The connection between the narrow section and the wide section forms a step structure to limit the extreme position of the support member extending upward.

4. The rotor or stator core riveting device according to claim 1, characterized in that: A vertically extending mounting groove is provided at the circumferential edge of the core shaft, the mounting groove is laterally open outward, a convex strip is inserted into the mounting groove, the convex strip extends outward to the circumferential outer side of the core shaft, and the convex strip is used to extend into the groove of the rotor core or the stator core to position the circumferential position of the punching sheet of the rotor core or the stator core.

5. The rotor or stator core riveting device according to claim 4, characterized in that: The installation groove is a T-shaped groove, and the outer wall of the convex strip is in contact with and matched with the groove wall of the T-shaped groove.

6. The rotor or stator core riveting device according to claim 4, characterized in that: The upper end surface of the core shaft is matched with an upper cover, and the upper cover is detachably fixed to the core shaft, and the upper cover is used to limit the axial position of the convex strip.

7. The rotor or stator core riveting device according to any one of claims 1 to 6, characterized in that: The bearing platform is detachably fixed on a base, the base is provided with the driver, and the core shaft is detachably fixed to an output end of the driver.

8. The rotor or stator core riveting device according to claim 2 or 3, characterized in that: The support platform is provided with a plurality of placement holes which are arranged in a circular shape and evenly spaced with the center of the guide hole as the center of the circle, the placement holes are open upward, and the punch is arranged in the placement holes; when the rotor core or the stator core is supported on the support, the punch does not contact the rivet.

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