Core-pulling device for integral forming of the rotor core of a torque converter

Abstract

The present invention discloses a core-pulling device for integral forming of a rotor core of a hydraulic torque converter, which comprises a lower table surface, a middle table surface, an upper-middle table surface and an upper table surface connected in sequence. A power part is arranged on the lower table surface, and a mold for forming a rotor core is installed on the upper table surface. A driving gear is meshed with the output end of the power part, a rotating shaft is fixedly connected to the driving gear, the rotating shaft passes through the middle table surface and is perpendicular to the middle table surface, and a plurality of transmission plates are arranged at intervals on the rotating shaft in the vertical direction. Adjacent transmission plates are connected by connecting columns, and a plurality of first core-pulling mechanisms and second core-pulling mechanisms distributed around the rotating shaft are arranged on the middle table surface. By the above method, the core-pulling device for integral forming of a rotor core of a hydraulic torque converter of the present invention can form the rotor core at one time and will not damage the core during the core-pulling process.

Description

Technical Field

[0001] The present invention relates to the field of machinery, and particularly to a core-pulling device for integral forming of a rotor core of a hydraulic torque converter. Background Art

[0002] The automotive hydraulic torque converter is one of the key components of an automatic transmission, directly affecting the transmission efficiency and energy consumption of the automatic transmission. Breaking through the manufacturing technology and equipment of automotive hydraulic torque converters is of great significance for realizing import substitution and improving the overall manufacturing level of China's automatic transmission industry and even the automotive industry.

[0003] The core casting of the hydraulic torque converter: the rotor, belongs to a high-precision hydraulic casting. The casting is composed of 16 - 21 blade angle values ≥ 45°, the minimum wall thickness of the blade is 3.2 ± 0.5, the R value at the root of the blade is R0.6 ± 0.25, the minimum cross-sectional size of the internal flow channel of the blade: width 4.3 ± 0.3, length 18.3 ± 0.3; the surface roughness requirement for all blades is Rz80; there shall be no burrs or sand sticking on the forming surface of the blade, and no repair by welding is allowed. The dimensional accuracy, internal quality, and surface roughness requirements of the casting are extremely strict, and the key condition determining whether the quality requirements of the casting can be met is the forming quality of the blade core. The compactness, dimensional stability, and roughness of the blade core directly determine whether the service performance of the casting can meet the design requirements, the scrap rate and cost, and whether the casting can be mass-produced. The rotor core needs to be formed by core-pulling at one time, and the existing core-pulling devices cannot meet the use requirements. Summary of the Invention

[0004] The main technical problem to be solved by the present invention is to provide a core-pulling device for integral forming of a rotor core of a hydraulic torque converter, which can form the rotor core at one time without damaging the core during the core-pulling process.

[0005] To solve the above technical problems, a technical solution adopted by the present invention is: to provide a core-pulling device for the integral forming of a rotor sand core of a hydraulic torque converter, including a lower table surface, a middle table surface, an upper-middle table surface, and an upper table surface connected in sequence. A power unit is provided on the lower table surface, and a mold for forming the rotor sand core is installed on the upper table surface. A driving gear is meshed with the output end of the power unit, and a rotating shaft is fixedly connected to the driving gear. The rotating shaft passes through the middle table surface and is perpendicular to the middle table surface. A plurality of transmission plates are arranged at intervals in the vertical direction on the rotating shaft, and adjacent transmission plates are connected by connecting columns. A plurality of first core-pulling mechanisms and second core-pulling mechanisms distributed around the rotating shaft are provided on the middle table surface. Both the first core-pulling mechanism and the second core-pulling mechanism include a first slider slidably connected to the middle table surface. A first transmission rod is rotatably connected to the first slider, and the other end of the first transmission rod is rotatably connected to the connecting column. A first chute inclined downward is provided on the first slider, and a first core-pulling block is movably connected in the first chute. The upper end of the first core-pulling block is connected to a first blade core. A second transmission rod is rotatably connected above the first slider of the second core-pulling mechanism, and the other end of the second transmission rod is rotatably connected to a second slider. The second slider is slidably connected to the upper-middle table surface, and the second slider is connected to an upper connecting rod. The upper end of the connecting rod is connected to a second blade core. The first blade core and the second blade core enter the mold. The power unit drives the rotating shaft to rotate through the driving gear, the transmission plates rotate synchronously and push the first sliders of the first core-pulling mechanism and the second core-pulling mechanism to retreat through the first transmission rods. The retreat of the first sliders causes the first core-pulling blocks to slide down along the first chutes and retreat synchronously, so that the first blade cores are withdrawn from the mold. The first slider of the second core-pulling structure retreats and synchronously pulls the second transmission rod to cause the second slider to retreat. The second slider drives the connecting rod to withdraw the second blade core from the mold together, thereby obtaining an integral rotor sand core.

[0006] In a preferred embodiment of the present invention, the first slider is perpendicular to the middle table surface and is inclined with respect to the radial direction of the rotating shaft.

[0007] In a preferred embodiment of the present invention, a first slide rail is provided on the middle table surface, and the bottom of the first slider is slidably connected to the first slide rail. The first slide rail is arranged in a first installation groove of the middle table surface.

[0008] In a preferred embodiment of the present invention, the second slider is perpendicular to the upper-middle table surface and is inclined with respect to the radial direction of the rotating shaft.

[0009] In a preferred embodiment of the present invention, a second slide rail is provided on the upper-middle table surface, and the bottom of the second slider is slidably connected to the second slide rail. The second slide rail is connected to a second installation groove of the upper-middle table surface.

[0010] In a preferred embodiment of the present invention, the number of the transmission plates is 4, and 6 connecting columns are provided between adjacent transmission plates, and the connecting columns are staggeredly distributed in space.

[0011] In a preferred embodiment of the present invention, two first core-pulling mechanisms are provided between the two second core-pulling mechanisms.

[0012] In a preferred embodiment of the present invention, the first core-pulling block includes a sliding shaft, the sliding shaft is arranged in the first sliding groove with a clearance fit, and connecting plates fixedly connected to the first blade core are connected to both ends of the sliding shaft.

[0013] In a preferred embodiment of the present invention, the power part includes a hydraulic cylinder, a toothed block is arranged at the front end of the hydraulic cylinder, the toothed block is meshed with the driving gear, and the hydraulic cylinder drives the toothed block to move back and forth to drive the driving gear to rotate reciprocally.

[0014] The beneficial effect of the present invention is that the core-pulling device for the integral forming of the hydraulic torque converter rotor core can form the rotor core at one time, and the core will not be damaged during the core-pulling process. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings, where:

[0016] Figure 1 is a schematic structural diagram of a preferred embodiment of the core-pulling device for the integral forming of the hydraulic torque converter rotor core of the present invention;

[0017] Figure 2 is Figure 1 a partial structural diagram of;

[0018] Figure 3 is Figure 2 a partial structural diagram of;

[0019] Figure 4 is Figure 1 a partial structural diagram of;

[0020] Figure 5 is Figure 4 a partial structural diagram of;

[0021] Figure 6 is a schematic structural diagram of the rotor core;

[0022] The markings of the various components in the drawings are as follows: 1. Lower tabletop, 11. Power unit, 12. Driving gear, 13. Rotating shaft, 14. Transmission plate, 15. Connecting column, 2. Middle tabletop, 21. First slide rail, 22. First installation groove, 3. Middle upper tabletop, 31. Second slide rail, 32. Second installation groove, 4. Upper tabletop, 5. Mold, 6. First core-pulling mechanism, 61. First slider, 62. First transmission rod, 63. First chute, 64. First core-pulling block, 641. Sliding shaft, 642. Connecting plate, 65. First blade core, 7. Second core-pulling mechanism, 71. Second transmission rod, 72. Second slider, 73. Connecting rod, 74. Second blade core, 8. Rotor core. Detailed implementation mode

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1 to 5, A core-pulling device for the integral forming of a torque converter rotor core, comprising a lower table surface 1, a middle table surface 2, an upper-middle table surface 3, and an upper table surface 4 connected in sequence. A power unit 11 is provided on the lower table surface 1, and a mold 5 for forming the rotor core 7 is installed on the upper table surface 4. A driving gear 12 is engaged with the output end of the power unit 11, and a rotating shaft 13 is fixedly connected to the driving gear 12. The rotating shaft 13 passes through the middle table surface 2 and is perpendicular to the middle table surface 2. A plurality of transmission plates 14 are arranged at intervals on the rotating shaft 13 in the vertical direction, and adjacent transmission plates 14 are connected by connecting columns 15. A plurality of first core-pulling mechanisms 6 and second core-pulling mechanisms 7 distributed around the rotating shaft 13 are provided on the middle table surface 2. Both the first core-pulling mechanism 6 and the second core-pulling mechanism 7 include a first slider 61 slidably connected to the middle table surface 2. A first transmission rod 62 is rotatably connected to the first slider 61, and the other end of the first transmission rod 62 is rotatably connected to the connecting column 15. A first chute 63 inclined downward is provided on the first slider 61, and a first core-pulling block 64 is movably connected in the first chute 63. The upper end of the first core-pulling block 64 is connected to a first blade core 65, and the first blade core 65 enters the mold 5. A second transmission rod 71 is rotatably connected above the first slider 61 of the second core-pulling mechanism 7, and the other end of the second transmission rod 72 is rotatably connected to a second slider 72. The second slider 72 is slidably connected to the upper-middle table surface 3, and a connecting rod 73 is connected to the second slider 72. The upper end of the connecting rod 73 is connected to a second blade core 74, and the second blade core 74 enters the mold 5. The power unit 11 drives the rotating shaft 13 to rotate through the driving gear 12, and the transmission plates 14 rotate synchronously and push the first sliders 61 of the first core-pulling mechanism 6 and the second core-pulling mechanism 7 to retreat through the first transmission rods 62. The retreat of the first slider 61 causes the first core-pulling block 64 to slide down along the first chute 63 and retreat synchronously, causing the first blade core 65 to be pulled out of the mold 5. The first slider 61 of the second core-pulling structure 7 retreats and synchronously pulls the second transmission rod 71 to cause the second slider 72 to retreat. The second slider 72 drives the connecting rod to pull the second blade core 74 out of the mold 5 together, thereby obtaining an integral rotor core 8.

[0025] In addition, the first slider 61 is perpendicular to the middle table surface 2 and is inclined with respect to the radial direction of the rotating shaft 13.

[0026] In addition, a first slide rail 21 is provided on the middle table surface 2, and the bottom of the first slider 61 is slidably connected to the first slide rail 21. The first slide rail 21 is arranged in the first installation groove 22 of the middle table surface.

[0027] In addition, the second slider 72 is perpendicular to the upper-middle table surface 3 and is inclined with respect to the radial direction of the rotating shaft 13. To better show the relationship between the upper-middle table surface and the second slider, the components for fixing the position of the upper-middle table surface in the figure are omitted, and similarly, some structures of the upper table surface are also omitted.

[0028] In addition, the middle upper table 3 is provided with a second slide rail 31, the bottom of the second slider 72 is slidably connected to the second slide rail 31, and the second slide rail 31 is arranged on the second installation groove 32 of the middle upper table 3.

[0029] In addition, the number of the transmission plates 14 is 4, and 6 connecting columns 15 are arranged between adjacent transmission plates 14. The connecting columns 15 are staggered in space. Through the staggered connecting columns 15, the first transmission rods 62 of each core-pulling mechanism will not interfere with each other during the movement process.

[0030] In addition, two first core-pulling mechanisms 6 are arranged between the two second core-pulling mechanisms 7. The number and positions of the second core-pulling mechanism and the first core-pulling mechanism are reasonably selected according to the structure of the rotor core 7. In the figure, in order to better show the structure of the first core-pulling mechanism, the other first core-pulling mechanisms are omitted. Figure 3 In order to better show the second core-pulling mechanism, the first core block and the first vane core are omitted and not drawn. Figure 4 Similarly, the connecting rod and the second vane core are omitted and not drawn.

[0031] In addition, the first core block 64 includes a sliding shaft 641, the sliding shaft 641 is arranged in the first sliding groove 63 with a clearance fit, and connecting plates 642 connected to the first vane core 65 are connected to both ends of the sliding shaft 641.

[0032] In addition, the power unit 11 includes a hydraulic cylinder. A toothed block is arranged at the front end of the hydraulic cylinder, and the toothed block is meshed with the driving gear. The hydraulic cylinder drives the toothed block to move back and forth to drive the driving gear to rotate reciprocally. The hydraulic cylinder can also be replaced with a linear driving device.

[0033] The specific working principle of the core-pulling device for the integral forming of the hydraulic torque converter rotor core is as follows: The corresponding first vane cores 65 on the first core-pulling mechanism 6 and the second vane cores 74 on the second core-pulling mechanism 7 are sent into the mold 5 according to the designed positions. The rotor core 7 is cast in the mold 5 (the mold for casting the rotor core is designed by conventional technical means). After casting is completed, the power unit 11 is activated. The hydraulic cylinder drives the tooth block to retreat, and the tooth block drives the driving gear 12 to rotate. The rotating shaft 13 on the driving gear 12 drives the transmission plate 14 to rotate. The connecting column 15 on the transmission plate 14 pushes the first slider 61 to retreat along the first slide rail 21 through the first transmission rod 62 during rotation. The first slider 61 pulls the first core-pulling block 64 to retreat during the retreat process. The first core-pulling block 64 slides down along the first chute 63 during the retreat process, and the first vane core 65 is pulled out from the rotor core 7 (the driving gear, rotating shaft, transmission plate, connecting column, first transmission rod, and first slider form a transmission structure similar to a crank-slider mechanism). For the second core-pulling mechanism 7, the part with the same structure as the first core-pulling mechanism 6 completes the same action. During the above core-pulling process, the first slider 61 pulls the second slider 72 to retreat synchronously through the second transmission rod 71 during the retreat process. The connecting rod 73 on the second slider 72 pulls the second vane core 74 to retreat synchronously, completing the synchronous core-pulling of the first core-pulling mechanism 6 and the second core-pulling mechanism 7. Finally, the mold is disassembled to obtain the integrally formed rotor core 7 (such as Figure 6 ). At position A in the rotor core 7, a void is formed by the first core-pulling mechanism, and at position B, a void is formed by the second core-pulling mechanism. The shapes and positions of the first vane core 65 and the second vane core 74 are determined by the structure of the rotor core, and are not limited to the shapes and positions disclosed in the drawings of this application.

[0034] Different from the prior art, the core-pulling device for the integral forming of the hydraulic torque converter rotor core of the present invention can form the rotor core in one step, and will not damage the core during the core-pulling process.

[0035] The above are only embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural or equivalent process transformation made using the content of the specification of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A core-pulling device for integral forming of a hydraulic torque converter rotor core, comprising a lower table surface, a middle table surface, an upper-middle table surface and an upper table surface connected in sequence, characterized in that, A power unit is provided on the lower table surface, a mold for forming a rotor core is installed on the upper table surface, a driving gear is engaged on the output end of the power unit, a rotating shaft is fixedly connected to the driving gear, the rotating shaft passes through the middle table surface and is perpendicular to the middle table surface, a plurality of transmission plates are arranged at intervals in the vertical direction on the rotating shaft, adjacent transmission plates are connected by connecting columns, a plurality of first core-pulling mechanisms and second core-pulling mechanisms distributed around the rotating shaft are provided on the middle table surface, both the first core-pulling mechanism and the second core-pulling mechanism include a first slider slidably connected to the middle table surface, a first transmission rod is rotatably connected to the first slider, the other end of the first transmission rod is rotatably connected to the connecting column, a first chute inclined downward is provided on the first slider, a first core-pulling block is movably connected in the first chute, a first vane core is connected to the upper end of the first core-pulling block, a second transmission rod is rotatably connected above the first slider of the second core-pulling mechanism, the other end of the second transmission rod is rotatably connected to a second slider, the second slider is slidably connected to the middle upper table surface, a connecting rod is connected to the second slider, a second vane core is connected to the upper end of the connecting rod, the first vane core and the second vane core enter the mold, the power unit drives the rotating shaft to rotate through the driving gear, the transmission plates rotate synchronously and push the first sliders of the first core-pulling mechanism and the second core-pulling mechanism to retreat through the first transmission rods, the retreat of the first sliders causes the first core-pulling blocks to slide down along the first chutes and retreat synchronously to pull the first vane cores out of the mold, the first slider of the second core-pulling structure retreats and synchronously pulls the second transmission rod to make the second slider retreat, and the second slider drives the connecting rod to pull the second vane core out of the mold together, so as to obtain an overall rotor core.

2. The core-pulling device for integral forming of a torque converter rotor core, as claimed in claim 1, wherein The first slider is perpendicular to the middle table surface and is inclined with respect to the radial direction of the rotating shaft.

3. The core-pulling device for integral forming of the impeller core of a hydraulic torque converter according to claim 2, characterized in that, A first slide rail is provided on the middle table surface, the bottom of the first slider is slidably connected to the first slide rail, and the first slide rail is arranged in a first installation groove on the middle table surface.

4. The core-pulling device for integral forming of the impeller core of a hydraulic torque converter according to claim 1, wherein, The second slider is perpendicular to the middle upper table surface and is inclined with respect to the radial direction of the rotating shaft.

5. The core-pulling device for integral forming of the impeller core of a torque converter according to claim 4, characterized in that A second slide rail is provided on the middle upper table surface, the bottom of the second slider is slidably connected to the second slide rail, and the second slide rail is connected to a second installation groove on the middle upper table surface.

6. The core-pulling device for integral forming of the impeller core of a torque converter according to any one of claims 1-5, characterized in that, The number of the transmission plates is 4, 6 connecting columns are provided between adjacent transmission plates, and the connecting columns are distributed in a staggered manner in space.

7. The core-pulling device for integral forming of the hydraulic torque converter rotor core, as claimed in claim 6, wherein Two first core-pulling mechanisms are provided between the two second core-pulling mechanisms.

8. The core-pulling device for integral forming of the hydraulic torque converter rotor core, as claimed in claim 7, wherein, The first core-pulling block includes a sliding shaft, the sliding shaft is arranged in the first chute with a clearance fit, and connecting plates fixedly connected to the first vane core are connected to both ends of the sliding shaft.

9. The core-pulling device for integral forming of a torque converter rotor core according to claim 8, characterized in that, The power unit includes a hydraulic cylinder, a tooth block is provided at the front end of the hydraulic cylinder, the tooth block is engaged with the driving gear, and the hydraulic cylinder drives the tooth block to move back and forth to drive the driving gear to rotate reciprocally.

Images