Door motor stator coil rivet one-time press-fitting forming device

Abstract

The utility model provides a door motor stator coil rivet one-time press-fitting forming device, a spherical pressure head is arranged at the lower end of a pressure head of a hydraulic machine, and the bottom end of the spherical pressure head is provided with a hemispherical pressure head part; a hanging hole is formed in the middle of the fixing plate, the neck of the spherical pressing head is sleeved with the hanging hole, the diameter of the hanging hole is smaller than that of the pressing head of the spherical pressing head, and screw holes used for being connected with connecting pieces are formed in the periphery of the fixing plate; the periphery of the top end of the connecting piece is fixed to the fixing plate through bolts, a spherical groove is formed in the center of the connecting piece corresponding to the pressing head portion of the spherical pressing head, and the connecting piece is hung on the spherical pressing head through the fixing plate. The rivet pressing head is fixed to the bottom end of the connecting piece, the bottom of the rivet pressing head is annular, and a plurality of rivet pressing grooves are evenly distributed in the annular bottom of the rivet pressing head. And the positioning bottom plate is arranged on a load bearing platform of the hydraulic machine, and the center of the positioning bottom plate is opposite to the center of the rivet pressure head. The device has the advantages that stress balance is guaranteed, production consistency is good, and production efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of door motor assembly, and specifically, to a device for one-time press-fitting and forming of rivets for a door motor stator coil. Background Art

[0002] One structural form of the door motor stator coil is a split structure. After the coil is assembled, aluminum rivets need to be inserted, and then a punch is used to perform riveting one by one. Currently, this riveting process mainly relies on manual operation.

[0003] The defects of manual operation are mainly reflected in the following aspects:

[0004] First, for completely manual riveting, the pressure, angle, etc. during the riveting process all depend on the proficiency of the operator, and it is very easy to cause insecure riveting, and the products produced lack consistency.

[0005] Second, during the riveting process, riveting needs to be carried out one by one, and the force is always uneven for the entire electronic coil, which is likely to cause the pressing ring of the coil assembly to deform.

[0006] Third, due to the uneven impact force and deformation problems suffered by the split coil assembly, the cylindricity of the coil becomes poor, and the air gap of the product is uneven after being assembled into the whole machine, resulting in abnormal shaking and increased noise during the operation of the door motor.

[0007] The efficiency of manual operation is too low, and the cost increases sharply.

[0008] To solve the above problems, those skilled in the art urgently need to propose a new press-fitting and forming device. Content of the Utility Model

[0009] The purpose of the utility model is to overcome the deficiencies of the prior art, and thus provide a device for one-time press-fitting and forming of rivets for a door motor stator coil that ensures balanced force, good production consistency, and high production efficiency.

[0010] To achieve the above purpose, the technical solution adopted by the utility model is: a device for one-time press-fitting and forming of rivets for a door motor stator coil, including a hydraulic press, a spherical punch, a fixing plate, a connecting piece, a rivet punch, and a positioning bottom plate;

[0011] The spherical punch is installed at the lower end of the punch of the hydraulic press. The neck diameter of the spherical punch is smaller than the head diameter, and the bottom end of the spherical punch has a hemispherical pressing head;

[0012] A hanging hole is arranged in the middle of the fixing plate. The hanging hole is sleeved on the neck of the spherical punch. The diameter of the hanging hole is smaller than the diameter of the pressing head of the spherical punch. Screw holes for connecting the connecting piece are arranged around the fixing plate;

[0013] The top periphery of the connecting member is fixed to the fixing plate by bolts. A spherical groove is provided at the center of the connecting member corresponding to the pressing head of the spherical pressing head. The connecting member is hung on the spherical pressing head through the fixing plate;

[0014] The rivet pressing head is fixed to the bottom end of the connecting member. The bottom of the rivet pressing head is annular, and a plurality of rivet pressing grooves are evenly distributed on the annular bottom of the rivet pressing head;

[0015] The positioning bottom plate is arranged on the bearing platform of the hydraulic press, and the positioning bottom plate is directly opposite to the center of the rivet pressing head.

[0016] Preferably, there is a clearance between the connecting member and the spherical pressing head. When there is no pressing action, a clearance is left between the spherical pressing head and the spherical groove. When there is a pressing action, the spherical pressing head is in close contact with the spherical groove.

[0017] Preferably, a horizontal step is provided at the transition area between the pressing head and the neck of the spherical pressing head. The horizontal step is parallel to the bottom surface of the fixing plate to form a supporting part during the hanging process.

[0018] Preferably, the top end of the spherical pressing head is fixed to the lower end of the pressing head of the hydraulic press by bolts.

[0019] Preferably, the top end of the rivet pressing head is fixed to the lower end of the connecting member by bolts.

[0020] Preferably, the rivet pressing head is an annular structure with a cylindrical cavity that has a top remaining, a bottom opening, and a hole in the center of the top. The rivet pressing grooves are a circle of hemispherical circular grooves opened on the annular bottom.

[0021] Preferably, a positioning step lower than the rivet pressing grooves is provided on the outer periphery of the annular bottom of the rivet pressing head.

[0022] Preferably, a circular embedding groove is provided at the center of the positioning bottom plate. An active base is installed in the circular embedding groove. A cylindrical handle is provided at the center of the active base. The height of the cylindrical handle matches the hole left at the center of the rivet pressing head.

[0023] Preferably, the number of the cylindrical handles and the active bases is multiple, which are used for transporting the stator coil of the door motor and can be adaptively installed on the positioning bottom plate in a switchable manner.

[0024] Preferably, the diameter of the pressing head of the spherical pressing head is greater than or equal to half of the width of the connecting member.

[0025] The utility model has substantial features and progress compared with the prior art. Specifically, the utility model has the following advantages:

[0026] 1. Through the cooperation of the spherical indenter and the spherical groove, the pressure from the hydraulic press can be evenly distributed on the lower rivet indenter below, making the force distribution during the riveting process more balanced, not easily causing deformation problems due to uneven pressing, and thus having good cylindricity, stable air gap, and not easily generating jitter and noise.

[0027] 2. Since all the rivets are pressed at once in a mechanical manner, the consistency is strong and the product stability is greatly improved.

[0028] 3. A rivet pressing groove is provided on the rivet indenter, and the groove surface is the same as the spherical surface of the rivet, thereby ensuring the aesthetics after the stator is pressed and the stability after the rivet is tightened.

[0029] 4. An active gap is left between the spherical indenter and the spherical groove. When the height of the assembled coil fluctuates slightly, it is not easily interfered by the height inconsistency, ensuring the qualified rate of the pressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the overall structural schematic diagram of the device for one-time pressing and forming of the rivets of the door motor stator coil in the present utility model.

[0031] Figure 2 is the structural schematic diagram of the indenter part in the present utility model.

[0032] Figure 3 is the structural schematic diagram of the rivet indenter in the present utility model.

[0033] Figure 4 is the structural schematic diagram of the pressure-bearing stage of the hydraulic press in the present utility model.

[0034] In the figure: 1. Hydraulic press; 2. Spherical indenter; 3. Fixed plate; 4. Connecting piece; 5. Rivet indenter; 6. Positioning bottom plate; 7. Cylindrical handle; 8. Movable base; 9. Stator coil; 10. Bolt; 21. Neck; 22. Pressing head part; 41. Spherical groove; 51. Rivet pressing groove; 52. Positioning step. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The following further describes in detail the technical solutions of the present utility model through specific embodiments.

[0036] As Figures 1-4 shown, a device for one-time pressing and forming of the rivets of the door motor stator coil includes a hydraulic press 1, a spherical indenter 2, a fixed plate 3, a connecting piece 4, a rivet indenter 5, and a positioning bottom plate 6.

[0037] The spherical indenter 2 is fixedly installed at the lower end of the indenter of the hydraulic press 1 through bolts. The diameter of the neck 21 of the spherical indenter 2 is smaller than the diameter of the head. The bottom end of the spherical indenter has a hemispherical indenting part 22. In this embodiment, a horizontal step 23 is provided in the transition area between the indenting part 22 and the neck 21 of the spherical indenter 2. The horizontal step 23 is parallel to the bottom surface of the fixing plate 3, forming a supporting part during the hanging process.

[0038] To ensure the effectiveness and stability of pressure transmission, in this embodiment, the diameter of the indenting part of the spherical indenter is greater than or equal to half of the width of the connecting part.

[0039] A hanging hole is provided in the middle of the fixing plate 3. The hanging hole is sleeved on the neck of the spherical indenter 2. The diameter of the hanging hole is smaller than the diameter of the indenting part of the spherical indenter. Threaded holes for connecting the connecting part 4 are provided around the fixing plate 3.

[0040] The top periphery of the connecting part 4 is fixed to the fixing plate 3 through bolts 10. A spherical groove 41 is provided at the center of the connecting part 4 corresponding to the indenting part of the spherical indenter 2. The connecting part 4 is hung on the spherical indenter 2 through the fixing plate 3.

[0041] The top end of the rivet indenter 5 is fixed to the bottom end of the connecting part 4 through bolts. The bottom of the rivet indenter 5 is annular. A number of rivet grooves 51 are evenly distributed on the annular bottom of the rivet indenter 5. Specifically, in this embodiment, the rivet indenter 5 is an annular structure with a cylindrical cavity that has a top remaining, a bottom open, and a hole left at the center of the top. The rivet grooves 51 are a circle of hemispherical circular grooves opened on the annular bottom, and their shapes are adapted to the spherical shape of the rivet. A positioning step 52 lower than the rivet groove is provided on the outer periphery of the annular bottom of the rivet indenter 5.

[0042] The positioning bottom plate 6 is arranged on the pressure-bearing platform of the hydraulic press 1. The positioning bottom plate 6 is directly opposite to the center of the rivet indenter 5. In this embodiment, a circular embedding groove is provided at the center of the positioning bottom plate 6. An active base 8 is installed in the circular embedding groove. A cylindrical handle 7 is provided at the center of the active base 8. The height of the cylindrical handle 7 matches the hole left at the center of the rivet indenter 5.

[0043] In this embodiment, the cylindrical handle 7 is used after being assembled with the active base. The number is multiple, which is used to transport the door motor stator coil 9 and can be adaptively installed with the positioning bottom plate 6 in a switchable manner.

[0044] In a preferred embodiment, due to the uneven heights of the assembled stator coils 9 and slight dimensional fluctuations, an active gap is left between the connecting part 4 and the spherical indenter 2. When there is no pressing action, an active gap is left between the spherical indenter 2 and the spherical groove 41. When there is a pressing action, the spherical indenter 2 is in close contact with the spherical groove 41.

[0045] Description of working principle:

[0046] Select multiple cylindrical handles 7 and the transfer tool after assembling with the movable base for standby, and pre-place the assembled stator coil 9 in the tool assembled with the cylindrical handle 7 and the movable base.

[0047] When riveting starts, transfer the tool assembled with the cylindrical handle 7 and the movable base together with the assembled stator coil 9 to the positioning base plate 6. After the placement position is accurate, the personnel withdraw and start operating the hydraulic press for riveting.

[0048] Control the hydraulic press to move downwards. The entire riveting punch 5 is forced to move downwards until it contacts the stator coil 9. After each rivet groove 51 and each rivet top surface come into contact, continue to press down. Since each rivet is synchronously stressed, the entire stator coil is stressed evenly and stably, achieving an improvement in the stability of the assembly, and thus ensuring the subsequent performance.

[0049] When the heights of the stator coils 9 are inconsistent, due to the design of the movable gap, the remaining movable gap can offset these height differences, thereby avoiding being affected by the height differences.

[0050] Throughout the process, with the cooperation of the spherical punch and the spherical groove, the force from top to bottom is balanced and stable, effectively preventing the problem of pressure deviation.

[0051] Finally, it should be noted that: The above has made a detailed description of the preferred embodiment of this patent. However, this patent is not limited to the above embodiment. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can also be made without departing from the purpose of this patent.

Claims

1. A one-step press-fitting device for door motor stator coil rivets, characterized in that: It includes a hydraulic press, a spherical pressing head, a fixing plate, a connecting piece, a rivet pressing head and a positioning base plate; The spherical pressure head is installed at the lower end of the pressure head of the hydraulic press, the neck diameter of the spherical pressure head is smaller than the head diameter, and the bottom end of the spherical pressure head has a hemispherical pressure head portion; A bearing hole is arranged in the middle of the fixing plate, the bearing hole is sleeved on the neck of the spherical pressure head, the diameter of the bearing hole is smaller than the diameter of the pressure head of the spherical pressure head, and screw holes for connecting the connecting parts are arranged around the fixing plate; The top of the connecting piece is fixed to the fixing plate by bolts, a spherical groove is provided at the center of the connecting piece corresponding to the pressing head of the spherical pressing head, and the connecting piece is hung on the spherical pressing head through the fixing plate; The rivet pressing head is fixed to the bottom end of the connecting piece, the bottom of the rivet pressing head is annular, and a plurality of rivet pressing grooves are evenly distributed on the annular bottom of the rivet pressing head; The positioning base plate is arranged on the pressure-bearing platform of the hydraulic press, and the positioning base plate is directly opposite to the center of the rivet pressing head.

2. The one-step press-fitting and forming device for the stator coil of a door motor according to claim 1 is characterized in that: An active gap is left between the connecting piece and the spherical pressing head. In a non-pressing action, an active gap is left between the spherical pressing head and the spherical groove. In a pressing action, the spherical pressing head is in close contact with the spherical groove.

3. The one-step press-fitting and forming device for the stator coil of a door motor according to claim 2, characterized in that: A horizontal step is provided in the transition area between the pressure head and the neck of the spherical pressure head. The horizontal step is parallel to the bottom surface of the fixing plate to form a supporting portion during the hanging process.

4. The one-step press-fitting and forming device for the stator coil of a door motor according to claim 3 is characterized in that: The top end of the spherical pressure head is fixed to the lower end of the pressure head of the hydraulic press by bolts.

5. The one-step press-fitting and forming device for the stator coil of a door motor according to claim 4, characterized in that: The top end of the rivet pressing head is fixed to the lower end of the connecting piece by a bolt.

6. The one-step press-fitting and forming device for the stator coil of a door motor according to claim 5, characterized in that: The rivet pressing head is an annular structure with a cylindrical cavity, a top portion having a top, an open bottom, and a hole in the top center, and the rivet pressing groove is a circle of hemispherical grooves opened at the bottom of the annular structure.

7. The one-step press-fitting and forming device for stator coil rivets of a door motor according to claim 6, characterized in that: The outer periphery of the annular bottom of the rivet pressing head is provided with a positioning step which is lower than the rivet pressing groove.

8. The one-step press-fitting and forming device for stator coil rivets of a door motor according to claim 7, characterized in that: A circular embedding groove is arranged at the center of the positioning base plate, a movable base is installed in the circular embedding groove, a cylindrical handle is arranged at the center of the movable base, and the height of the cylindrical handle matches the hole at the center of the rivet pressing head.

9. The one-step press-fitting and forming device for stator coil rivets of a door motor according to claim 8, characterized in that: There are multiple cylindrical handles and movable bases, which are used for transferring the stator coil of the door motor and can be switchably adapted and installed with the positioning base plate.

10. The one-step press-fitting and forming device for the stator coil of a door motor according to claim 9, characterized in that: The diameter of the pressure head of the spherical pressure head is greater than or equal to half of the width of the connecting piece.

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