Stator shaft press-in special press

Abstract

The present application relates to motor assembly equipment technical field, provide a kind of stator shaft press-in special press, including rack, shaft and stator body;The inside of the rack is equipped with vertically lifting motion lifting plate, the bottom of the lifting plate is equipped with connecting pressure block, one side of the connecting pressure block is equipped with pneumatic clamp.The present application overcomes the deficiencies of prior art, reasonable in design, compact structure, through the unique eccentric boss and positioning hole of connecting pressure block and shaft top insertion fit, the circumferential angle of shaft is forcedly determined before pressing, fundamentally avoids the product scrapping caused by pressing phase error, effectively ensures product quality consistency, through elastic limiting unit and the cooperation of gap driving structure, it can provide short-term sustained pressure after pressing in place, prevent shaft springback, solve the problem of pressing not tight caused by traditional press unloading too fast, make the crimping effect more stable and reliable.

Description

Technical Field

[0001] This invention relates to the field of motor assembly equipment technology, and specifically to a special press for pressing in stator shafts. Background Technology

[0002] In the motor manufacturing process, precisely pressing the shaft into the stator body is a critical step. Traditional pressing methods usually involve manual operation or general presses, which have problems such as inaccurate alignment and inability to guarantee the shaft angle, resulting in low product qualification rate and safety hazards. In particular, for special designs with eccentric structures at the top of the shaft, general equipment is difficult to achieve precise angle positioning and pressing. To address this, we propose a special press for stator shaft pressing. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the present invention provides a special press for stator shaft pressing, which overcomes the shortcomings of the prior art, has a reasonable design and compact structure, and solves the problems of inaccurate alignment and inability to guarantee the angle of shaft parts in existing presses.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a special press for pressing stator shafts, comprising a frame, shaft components, and a stator body;

[0005] The frame is equipped with a vertically movable lifting plate. A connecting pressure block is installed at the bottom of the lifting plate. A pneumatic clamp is provided on one side of the connecting pressure block. The two clamping plates of the pneumatic clamp are symmetrically arranged below the connecting pressure block for clamping the outer wall of the shaft.

[0006] The top of the shaft is eccentrically provided with a boss and an eccentrically opened positioning hole, and the bottom of the connecting pressure block is provided with an insertion hole that matches the boss and a positioning pin that matches the positioning hole.

[0007] The stator body is positioned directly below the connecting pressure block and is used to facilitate the pressing in of the shaft.

[0008] Preferably, the frame is provided with a mounting plate, and the top of the mounting plate is provided with a clamping unit for positioning the stator body.

[0009] Preferably, the clamping unit includes a mounting block, the top of which is circumferentially provided with a cylinder, and the output end of the cylinder is fitted with a clamping block.

[0010] Preferably, the stator body has a winding groove circumferentially formed on its top for engaging with the clamping block.

[0011] Preferably, the clamping block has a T-shaped structure, with its rear end height being higher than its front end height.

[0012] Preferably, the mounting block has a support groove at the top center for supporting the stator body, and a number of limiting blocks are provided on the outer periphery of the support groove for abutting against the outer wall of the bottom of the stator body.

[0013] Preferably, the frame has a fixed plate inside, and a pair of guide rods arranged vertically are slidably connected inside the fixed plate. The bottom of the two guide rods are connected to the lifting plate. An electric cylinder is provided at the top of the frame, and the output end of the electric cylinder is connected to the top of the connecting pressure block.

[0014] Preferably, the output end of the electric cylinder is connected to a flange, the bottom of the flange is provided with a T-shaped connector, the top of the lifting plate is provided with a connecting platform, the connecting platform is provided with a through groove, the large end of the T-shaped connector is inserted into the through groove, initially there is a gap between the top of the connecting platform and the flange, the bottom of the fixing plate is provided with an elastic limiting unit, and the guide rod is symmetrically provided with slots that cooperate with the elastic limiting unit.

[0015] Preferably, the elastic limiting unit includes a U-shaped plate fixed to the bottom of the fixed plate. Sliding columns are symmetrically slidably connected in the two vertical plates of the U-shaped plate. The two sliding columns are symmetrically distributed on both sides of the guide rod. A locking block for engaging the locking groove is provided on the side of the sliding column facing the guide rod. One side of the locking block is connected to the vertical plate of the U-shaped plate by a spring.

[0016] This invention provides a special press for pressing stator shafts, which has the following advantages:

[0017] 1. By connecting the pressure block with the unique eccentric boss and positioning hole on the top of the shaft, the circumferential angle of the shaft is determined before pressing, which fundamentally avoids product scrap due to incorrect pressing phase and effectively ensures product quality consistency.

[0018] 2. By combining the elastic limiting unit with the drive structure with gap, a short period of continuous pressure can be provided after the pressing is in place to prevent the shaft from springing back. This solves the problem of loose pressing caused by excessive unloading of traditional presses, making the pressing effect more stable and reliable. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a three-dimensional schematic diagram of the fixing plate structure of the present invention;

[0021] Figure 3 This is a bottom-view perspective view of the lifting plate structure of the present invention;

[0022] Figure 4 This is a three-dimensional schematic diagram of the shaft structure of the present invention;

[0023] Figure 5 This is a three-dimensional schematic diagram of the mounting plate structure of the present invention;

[0024] Figure 6 This is a schematic diagram of the inserted shaft in the stator body structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the stator body structure of the present invention without inserted shafts;

[0026] Figure 8 This is a schematic front view of the connecting platform structure of the present invention;

[0027] Figure 9 For the present invention Figure 8 Schematic diagram of the structure from the left view.

[0028] In the diagram: 1. Frame; 11. Fixing plate; 111. U-shaped plate; 112. Sliding column; 113. Clamping block; 114. Spring; 12. Guide rod; 121. Slot; 13. Electric cylinder; 131. Flange; 132. T-shaped connector; 2. Lifting plate; 21. Connecting platform; 22. Through slot; 3. Connecting pressure block; 31. Insertion hole; 32. Positioning column; 4. Pneumatic clamp; 5. Clamping plate; 6. Shaft; 61. Boss; 62. Positioning hole; 7. Mounting plate; 81. Mounting block; 82. Cylinder; 83. Clamping block; 84. Bearing groove; 85. Limiting block; 9. Stator body; 91. Winding groove. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] See attached document Figure 1-9 A special press for pressing stator shafts includes a frame 1, a shaft 6 and a stator body 9;

[0031] The frame 1 is equipped with a vertically movable lifting plate 2. The bottom of the lifting plate 2 is fixed with a connecting pressure block 3 by bolts. A pneumatic clamp 4 is provided on one side of the connecting pressure block 3. The two clamping plates 5 of the pneumatic clamp 4 are symmetrically arranged below the connecting pressure block 3 to stabilize and clamp the outer wall of the shaft 6 before pressing in, and prevent it from shaking.

[0032] The top of the shaft 6 adopts an eccentric design and is provided with a boss 61 and an eccentrically opened positioning hole 62. Correspondingly, the bottom of the connecting pressure block 3 is provided with an insertion hole 31 that mates with the boss 61 and a positioning pin 32 that mates with the positioning hole 62. Before pressing, by inserting the boss 61 into the insertion hole 31 and the positioning pin 32 into the positioning hole 62, the stator body 9 is positioned directly below the connecting pressure block 3 to cooperate with the pressing of the shaft 6. This ensures that the shaft 6 is pressed into the stator body 9 at the correct angle. Through the unique eccentric fit between the connecting pressure block 3 and the top of the shaft 6, the precise positioning of the pressing angle of the shaft 6 is achieved, avoiding scrap problems caused by incorrect pressing angle and effectively improving the yield rate.

[0033] The frame 1 is equipped with a mounting plate 7, and the top of the mounting plate 7 is equipped with a clamping unit for positioning and fixing the stator body 9 during the pressing process.

[0034] Specifically, the clamping unit includes a mounting block 81 fixed to the mounting plate 7 by bolts. A cylinder 82 is provided on the top circumference of the mounting block 81. A clamping block 83 is installed at the output end of each cylinder 82. A winding groove 91 is provided on the top circumference of the stator body 9 to cooperate with the clamping block 83. The front end of the clamping block 83 is designed to be able to penetrate into the winding groove 91. The cylinder 82 drives the clamping block 83 to move forward, so that the front end of the clamping block 83 is inserted into the winding groove 91 of the stator body 9, thereby clamping it from multiple points in the circumference and achieving precise positioning and firm clamping.

[0035] Furthermore, the clamping block 83 has a T-shaped structure, and its rear end is higher than its front end. This T-shaped structure allows the front end of the clamping block 83 to be poured into the winding groove 91 more smoothly when clamping, while the tall rear end structure can abut against the outer wall of the stator body 9, further ensuring the stability of the clamping.

[0036] Furthermore, a support groove 84 for supporting the stator body 9 is provided at the top center of the mounting block 81. The shape of the support groove 84 is adapted to the shape of the bottom of the stator body 9, which plays a role in initial positioning. Several limiting blocks 85 are provided on the outer periphery of the support groove 84 to abut against the outer wall of the bottom of the stator body 9. With the joint action of the support groove 84, the stator body 9 is prevented from moving in the horizontal direction.

[0037] The frame 1 has a fixed plate 11 inside. A pair of guide rods 12 arranged in the vertical direction are slidably connected to the fixed plate 11 through a carton bearing. The bottom of the two guide rods 12 is fixedly connected to the lifting plate 2 to ensure that the lifting plate 2 can only move smoothly in the vertical direction specified by the guide rods 12. The top of the frame 1 is equipped with an electric cylinder 13. The output end of the electric cylinder 13 extends downward and is connected to the top of the connecting pressure block 3 through a connecting structure, thereby driving the entire pressing part to press down and rise.

[0038] Specifically, the output end of the electric cylinder 13 is connected to a flange 131. A T-shaped connector 132 is provided at the bottom center of the flange 131. Correspondingly, the top of the lifting plate 2 is provided with a connecting platform 21. A through groove 22 is opened in the connecting platform 21. During assembly, the large end of the T-shaped connector 132 is inserted into the through groove 22 from the top of the connecting platform 21. Initially, there is a gap between the top of the connecting platform 21 and the flange 131. When the shaft 6 is pressed into the stator body 9, the output end of the electric cylinder 13 drives the lifting plate 2 to move upward. The lifting plate 2 will not move upward immediately. The bottom of the fixed plate 11 is provided with an elastic limiting unit. The guide rod 12 is symmetrically provided with a slot 121 that matches the elastic limiting unit. Under the cooperation of the elastic limiting unit and the slot 121, the connecting pressure block 3 maintains a certain pressure on the shaft 6 until the T-shaped connector 132 pulls the connecting platform 21 to move upward. Then the elastic limiting unit separates from the slot 121. At this time, the connecting pressure block 3 no longer maintains pressure on the shaft 6.

[0039] Furthermore, the elastic limiting unit includes a U-shaped plate 111 fixed to the bottom of the fixed plate 11 by bolts. Sliding posts 112 are symmetrically slidably connected to the two vertical plates of the U-shaped plate 111. The two sliding posts 112 are symmetrically distributed on both sides of the guide rod 12. A locking block 113 for engaging with the locking slot 121 is provided on the side of the sliding post 112 facing the guide rod 12. The side of the locking block 113 facing away from the guide rod 12 is connected to the vertical plate of the U-shaped plate 111 by a spring 114. During the process of the shaft 6 being pressed into the stator body 9, the guide rod 12 will move downwards along with the lifting plate 2. When the shaft 6 is pressed into the stator body 9... When the sub-body 9 is inside, the slot 121 will move to the position of the block 113. At this time, under the action of the spring 114, the block 113 will enter the slot 121 and exert a certain pressure on the guide rod 12. The vertical cross-section of the block 113 and the slot 121 are both isosceles triangular structures. When the output end of the electric cylinder 13 drives the lifting plate 2 to move upward, the block 113 maintains the progressive state of the slot 121 under the push of the spring 114. At this time, the connecting pressure block 3 will not suddenly give up the pressure on the top of the shaft 6, so as to avoid the shaft 6 unloading too quickly during pressing, which would cause the paper to be not pressed tightly.

[0040] Working principle: The operator places the stator body 9 on the bearing groove 84 on the top of the mounting block 81 for initial positioning, and starts multiple cylinders 82 arranged in the circumferential direction to act simultaneously, driving the T-shaped clamping block 83 to move forward. The front end of the clamping block 83 is precisely inserted into the winding groove 91 on the top of the stator body 9, and it is held tightly from all sides to ensure that the stator body 9 will not move during the pressing process.

[0041] Send the shaft 6 to the bottom of the connecting pressure block 3, insert the boss 61 into the insertion hole 31, and at the same time insert the positioning pin 32 into the positioning hole 62. Then, the outer wall of the shaft 6 is clamped by the two clamping plates 5 of the pneumatic clamp 4 to keep it upright.

[0042] Subsequently, the electric cylinder 13 is activated, causing the lifting plate 2 to lower the connecting pressure block 3.

[0043] This allows the shaft 6 to be precisely pressed into the center hole of the stator body 9 below.

[0044] When the shaft 6 is pressed into place, the guide rod 12 fixed on the lifting plate 2 also moves to a specific position, so that the slot 121 on the rod body is aligned with the locking block 113 of the elastic limiting unit. Under the continuous thrust of the spring 114, the locking block 113 quickly locks into the slot 121. At this time, the elastic limiting unit plays a role similar to a "reverse stop", applying an upward locking force to the guide rod 12 and the lifting plate 2.

[0045] After pressing is completed, the pneumatic clamp 4 releases its grip on the outer wall of the shaft 6, and the output end of the electric cylinder 13 begins to rise. At the initial moment of rising, due to the initial gap between the top of the connecting platform 21 and the flange 131, the rising force of the electric cylinder 13 will not be immediately transmitted to the lifting plate 2. Instead, under the action of the spring 114, the clamping block 113 and the inclined surface of the clamping groove 121 are tightly fitted, so that the connecting pressure block 3 still maintains a continuous and stable pressure on the top of the shaft 6. This brief pressure holding process avoids the problem of the shaft 6 springing back or the pressing not being tight due to the instantaneous release of pressure at the end of pressing, thus ensuring the stability of the pressing quality.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A special press for pressing stator shafts, characterized in that: It includes a frame (1), shafts (6) and stator body (9); The frame (1) is equipped with a lifting plate (2) that can move vertically. A connecting pressure block (3) is installed at the bottom of the lifting plate (2). A pneumatic clamp (4) is provided on one side of the connecting pressure block (3). The two clamping plates (5) of the pneumatic clamp (4) are symmetrically arranged below the connecting pressure block (3) for clamping the outer wall of the shaft (6). The top of the shaft (6) is provided with a boss (61) and a positioning hole (62) is provided eccentrically. The bottom of the connecting pressure block (3) is provided with an insertion hole (31) that matches the boss (61) and a positioning pin (32) that matches the positioning hole (62). The stator body (9) is located directly below the connecting pressure block (3) for pressing in the shaft (6); The frame (1) is provided with a fixed plate (11) inside. A pair of guide rods (12) arranged in the vertical direction are slidably connected inside the fixed plate (11). The bottom of the two guide rods (12) is connected to the lifting plate (2). The top of the frame (1) is provided with an electric cylinder (13). The output end of the electric cylinder (13) is connected to the top of the connecting pressure block (3). The output end of the electric cylinder (13) is connected to a flange (131). The bottom of the flange (131) is provided with a T-shaped connector (132). The top of the lifting plate (2) is provided with a connecting platform (21). A through groove (22) is opened in the connecting platform (21). The large end of the T-shaped connector (132) is inserted into the through groove (22). Initially, there is a gap between the top of the connecting platform (21) and the flange (131). The bottom of the fixing plate (11) is provided with an elastic limiting unit. The guide rod (12) is symmetrically provided with slots (121) that cooperate with the elastic limiting unit. The elastic limiting unit includes a U-shaped plate (111) fixed to the bottom of the fixed plate (11). Sliding columns (112) are symmetrically slidably connected in the two vertical plates of the U-shaped plate (111). The two sliding columns (112) are symmetrically distributed on both sides of the guide rod (12). The sliding column (112) is provided with a locking block (113) for cooperating with the locking groove (121) on the side facing the guide rod (12). One side of the locking block (113) is connected to the vertical plate of the U-shaped plate (111) by a spring (114).

2. The stator shaft pressing press as described in claim 1, characterized in that: The frame (1) is provided with a mounting plate (7), and the top of the mounting plate (7) is provided with a clamping unit for positioning the stator body (9).

3. A special press for pressing stator shafts as described in claim 2, characterized in that: The clamping unit includes a mounting block (81), and a cylinder (82) is provided on the top circumferential direction of the mounting block (81). A clamping block (83) is installed at the output end of the cylinder (82).

4. A special press for pressing stator shafts as described in claim 2, characterized in that: The stator body (9) has a winding groove (91) on its top circumferentially for use with the clamping block (83).

5. A special press for pressing stator shafts as described in claim 3, characterized in that: The clamp (83) has a T-shaped structure, with its rear end height being higher than its front end height.

6. A special press for pressing stator shafts as described in claim 3, characterized in that: The mounting block (81) has a support groove (84) at the top center for supporting the stator body (9), and a number of limiting blocks (85) are provided on the outer periphery of the support groove (84) for abutting against the outer wall of the bottom of the stator body (9).

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