Quantitative gluing device and method for shafting driving motor stator and rotor seat

Abstract

The quantitative gluing device and method are characterized in that the upper end of a fixing seat and the lower end of a tray are in coaxial rotating supporting fit, the lower end of the fixing seat is in clearance insertion connection with a central hole of a bushing rotating shaft to be glued, and a central cylindrical table of the tray is fixedly connected with the bushing rotating shaft through a limiting support; a guide through hole is formed in the middle of the fixed seat; the sliding limiting rod is composed of a front rod section, a middle rod section and a tail rod section, the front rod section is fixed to the lower portion of the positioning rod in a penetrating mode, a transverse rod portion of the middle rod section and the tail rod section are in sliding fit with the guide through hole, and the tail rod section is sleeved with a spring on the outer side of the fixing base. The middle rod section of the scraper is fixedly connected with the lower end part of the vertical rod part of the middle rod section and extends into the inner cavity of the bushing rotating shaft, and a set gap is reserved between the highest point of a cutting edge and the inner cavity surface of the bushing rotating shaft; and a positioning bearing mounted at the upper end of the positioning rod is in contact with the outer ring surface of the motor stator supported and fixed in the tray. The gluing device can realize uniform gluing.

Description

Technical Field

[0001] The invention belongs to the technical field of glue coating, and in particular relates to a method for quantitatively coating glue on a stator and rotor seat of a shaft drive motor. Background Art

[0002] In the shaft assembly, the stator and rotor of the torque motor that controls the rotation of the shaft are connected and fixed to the bushing by gluing. In actual operation, the following problems often plague the assembly personnel.

[0003] 1. Before assembling the motor stator, it is difficult to control the thickness of glue when applying glue manually. It is not too much or too little, and the distribution is uneven.

[0004] 2. In the motor stator (see Figure 1 ) When there is too much glue during installation, the glue layer will be squeezed too much to the lower end of the motor, causing the stator and rotor to be unable to be installed to the bottom, and the position will be raised after curing. If the time is too long, the glue layer is close to curing and the motor cannot be taken out, which directly causes assembly failure, making the motor bushing or motor scrapped, causing too much economic loss and affecting the entire assembly cycle node. If there is too little glue layer, it is easy to make the stator and rotor of the motor not firmly bonded, affecting the reliability during later use.

[0005] In summary, through careful analysis, it is found that when manually applying glue in the groove during bonding, the amount of glue cannot be accurately controlled, and the thickness is often uneven. It is necessary to improve the existing method of applying the glue layer, increase the process of controlling the thickness of the glue layer, remove the excess glue layer, fill the insufficient position, and reduce the occurrence of the above adverse conditions. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a quantitative glue coating device and method for the stator and rotor seats of a shaft drive motor.

[0007] One of the above objects of the present invention is achieved by the following technical solution:

[0008] A quantitative glue coating device for the stator and rotor seats of a shaft drive motor, comprising a tray, a fixed seat, a sliding limit rod, a positioning rod, a limit bracket, a scraper, a positioning bearing, a spring and a nut;

[0009] The upper end of the fixing seat is coaxially rotatably supported and matched with the lower end of the tray, and the lower end of the fixing seat is plug-connected with the center hole of the rotating shaft of the bushing to be coated with glue in a clearance fit manner. A cylindrical platform is arranged at the center of the tray, and the cylindrical platform is fixedly connected with the rotating shaft of the bushing through an inverted L-shaped limiting bracket;

[0010] A guide through hole in the radial direction is provided in the middle of the fixed seat; the sliding limit rod is composed of a front rod section, a middle rod section and a tail rod section, and the middle rod section is a T-shaped rod section; the front rod section of the sliding limit rod is fixedly connected with the lower part of the positioning rod, and the cross rod part and the tail rod section of the middle rod section of the sliding limit rod form a sliding fit with the guide through hole on the fixed seat in a limited manner along the circumferential direction, and the spring is sleeved on the outside of the fixed seat on the tail rod section, and the two ends of the spring are respectively pressed and contacted with the side surface of the fixed seat and the nut installed at the tail end of the tail rod section;

[0011] The scraper is fixedly connected to the lower end of the vertical rod part of the middle rod section with the cutting edge facing outward, and extends into the inner cavity of the bushing rotating shaft. A set gap is retained between the highest point of the scraper cutting edge and the inner cavity surface of the bushing rotating shaft through a limiting arc surface arranged at the lower part of the cutting edge.

[0012] A positioning bearing is installed on the upper end of the positioning rod, and the positioning bearing is in contact with the outer ring surface of the motor stator supported and fixed in the tray.

[0013] Moreover, an upper cylindrical section is formed on the upper part of the fixed seat, and a bearing hole is formed at the center of the lower end of the tray. The upper end of the fixed seat and the lower end of the tray are coaxially rotated and supported by bearings installed in the upper cylindrical section and the bearing hole; the guide through hole in the middle part of the fixed seat is composed of a rectangular hole and a circular hole; the cross bar part of the middle rod section of the sliding limit rod is a square rod section matching the rectangular hole on the fixed seat; the square rod section forms a through-limiting fit with the rectangular hole on the fixed seat, and the tail rod section of the sliding limit rod forms a through-fitting fit with the circular hole on the fixed seat.

[0014] Moreover, a right-angled notch is provided on one side of the vertical rod part of the middle rod section of the sliding limit rod near the lower end, and a V-shaped protrusion extending in the up-down direction is provided in the middle of the vertical surface of the right-angled notch, and a screw through hole is provided on the V-shaped protrusion, and the screw through hole is an oblong hole along the up-down direction; a V-shaped groove is provided at the tail end of the scraper, and the V-shaped groove cooperates with the V-shaped protrusion of the sliding limit rod, and a threaded hole is formed in the middle of the V-shaped groove, and the scraper can be adjustably fixed on the sliding rod along the up-down direction by installing screws in the threaded hole and the corresponding screw through hole on the sliding limit rod.

[0015] Moreover, the gap between the highest point of the scraper edge and the inner cavity surface of the bushing rotating shaft is 0.05mm.

[0016] The second objective of the present invention is achieved by the following technical solutions:

[0017] A method for applying glue using the above-mentioned quantitative gluing device for the stator and rotor seats of a shaft drive motor comprises the following steps:

[0018] Step 1: Assemble the connecting tray, the fixing seat, the sliding limit rod, and install them on the bushing rotating shaft. At this time, the spring on the sliding limit rod contacts the lock nut and generates a slight elastic force;

[0019] Step 2: Place the motor stator on the pallet, fix the lever gauge seat with the lever gauge on the frame where the bearing bushing is installed, place the lever gauge head against the outer wall of the motor stator, rotate the pallet, use the cross alignment method, screw the positioning screws connected to the side ring edge of the pallet, align the motor stator, make the motor stator coaxial with the bushing rotation axis and fix it, and mark the highest point of the stator outer ring;

[0020] Step 3: Install an appropriate scraper on the sliding limit rod, and adjust the scraper height up and down to ensure that the lower end surface of the scraper is in contact with the lateral end surface connected to the inner wall of the bearing bushing;

[0021] Step 4: Fix the lower end of the limit bracket to the bearing bushing with screws, press the tail end of the limit bracket cross arm against the L-shaped notch on the pallet, and connect the screws to fix the pallet;

[0022] Step 5, install and adjust the positioning rod to ensure that the upper end bearing of the positioning rod fits with the outer ring surface of the motor stator when the arc high point of the lower end of the scraper is in contact with the inner wall of the stator bushing, and the contact point is the highest position of the mark described in step 2;

[0023] Step 6. Rotate the sliding limit rod at a constant speed to drive the scraper, and apply the glue in front of the triangular tip of the scraper as it rotates. After completing the first circle of gluing, rotate it two more circles at a constant speed to ensure that the glue layer is evenly applied, and complete the conformal gluing of the inner wall of the bearing bushing.

[0024] The advantages and positive effects of the present invention are:

[0025] (1) The present invention can achieve a uniform glue layer, and the shape of the glue layer is the same as the shape of the motor stator, which is conducive to the smooth installation of the stator into the stator bushing, and reduces the damage to the stator and rotor caused by assembly knocking and the reduction of magnetic properties.

[0026] (2) The present invention can remove excess colloid and fill insufficient areas by scraping with a special scraper.

[0027] (3) The special scraper designed by the present invention and the installation method of the scraper can adjust the position relationship of the scraper to achieve different adhesive layer retention and thickness.

[0028] (4) The present invention is simple to operate, and the work tools and supplies are easy to obtain. It is convenient and fast, low in cost, and has outstanding effects. It does not require high operating skills of workshop workers and can be operated without training. It is very easy to promote and apply.

[0029] The invention can be used for shaping after glue coating in industries such as aerospace, aviation, shipbuilding, and precision instruments, and has a very broad prospect for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a structural diagram of the motor stator bushing involved in the present invention;

[0031] Figure 2 This is the overall appearance of the quantitative glue coating device for the stator and rotor seats of the shaft drive motor of the present invention;

[0032] Figure 3 It is an overall cross-sectional view of the quantitative glue coating device for the stator and rotor seats of the shaft drive motor of the present invention;

[0033] Figure 4 It is a schematic diagram of the connection between the limiting bracket and the fixing seat in the device of the present invention;

[0034] Figure 5 It is a schematic diagram of the structure of the fixing seat in the device of the present invention;

[0035] Figure 6 It is a schematic diagram of the structure of the tray in the device of the present invention;

[0036] Figure 7 7a is a schematic diagram of the structure of the sliding limit rod in the device of the present invention; 7b is a bottom view; 7c is a front view;

[0037] Figure 8 8a is a schematic diagram of the structure of the positioning rod in the device of the present invention; 8b is a cross-sectional view;

[0038] Fig. 9 It is a schematic diagram of the structure of the limiting bracket in the device of the present invention;

[0039] Fig.10 10a is a schematic diagram of the structure of the scraper in the device of the present invention, Figure 1 ; 10b, three-dimensional Figure 2 ; 10c, partial picture. DETAILED DESCRIPTION

[0040] The structure of the present invention is further described below with reference to the accompanying drawings and by way of examples. It should be noted that the present examples are descriptive rather than restrictive.

[0041] A quantitative glue coating device for the stator and rotor seats of shaft drive motors, see Figure 1-Figure 10, mainly composed of a tray 3, a fixed seat 4, a sliding limit rod 5, a positioning rod 8, a limit bracket 2, a scraper 7, a positioning bearing 9, a spring 11 and a nut 10. As shown in the figure, 1. The inner cavity cylinder on the connecting tray is used to place the motor stator 1, and is provided with 4 equally divided radial threaded holes for adjusting the coaxiality of the motor stator and the rotating shaft of the bushing. A cylindrical platform is provided in the center of the inner cavity, and an L-shaped notch is provided on the cylindrical platform to form a right-angle mounting portion for cooperating with the limit bracket to ensure the axial rotation of the connecting tray; 2. The fixed seat is used to connect the bushing rotating shaft 6. After connection, the connecting tray can rotate simultaneously with the bushing rotating shaft. Square and circular connecting through holes are provided radially in the middle of the fixed seat, and the sliding positioning rod can produce directional sliding and limiting effects inside it. 3. The sliding limit rod plays a role in sliding and fixing. Its front end is locked and fixed with the positioning rod by screws. The positioning rod can be positioned by sliding at its front end. A protruding rectangular block is made downward in the middle of the sliding limit rod, and a V-shaped protrusion is made on the rectangular block, which cooperates with the V-shaped groove of the scraper to play a role in high-precision repeated positioning. The middle and rear part of the sliding limit rod is designed as a square connecting cylinder, which cooperates with the fixed seat. The tail end is made with threads, which cooperate with the spring and nut to play a role in adjusting the spring pressure. 4. A bearing mounting column is made at the upper end of the positioning rod, which cooperates with the inner diameter of the positioning bearing, and a square through hole is made at the lower end, which cooperates with the front end of the sliding limit rod to adjust the fixed position of the positioning rod to ensure the follow-up rotation after the positioning bearing is fitted. 5. The front end of the scraper adopts a triangular cutting edge, and a limiting arc surface is set at the lower part of the V-shaped cutting edge. The tail end of the scraper is a V-shaped groove, and a threaded hole is made in the middle of the groove, which cooperates with the sliding limit rod to fix. 6. The limit bracket is an inverted L-shaped bracket, the lower end of its vertical arm is fixed with the motor bushing, a lower limit block is set at the upper end, and two threaded holes are made on the lower limit block for adjusting and limiting the axial rotation of the motor after alignment.

[0042] Device composition:

[0043] 1. Fixed seat

[0044] The upper part of the fixed seat is provided with an upper cylindrical section 4.1 which matches the inner diameter of the bearing, and the middle part is provided with a through hole 4.2 along the radial direction. The through hole is composed of a rectangular hole and a circular hole. A limiting flange 4.3 is provided near the lower part, and the limiting flange can contact the middle upper end of the bushing rotating shaft. The lower part is provided with a lower cylindrical section 4.4 which is coaxial with the upper cylindrical hole section. The lower cylindrical section is inserted and positioned with the inner hole of the bushing rotating shaft to ensure that the fixed seat is coaxial with the bushing rotating shaft.

[0045] 2. Pallet

[0046] The inner wall diameter of the tray is 1mm larger than the motor stator. Four threaded through holes 3.1 are equally spaced on the tray ring edge to install positioning screws for aligning and fixing the motor stator. A cylindrical platform 3.2 with an inverted L-shaped notch 3.3 is provided in the middle of the tray to cooperate with the limit bracket to fix the tray. A bearing hole is provided at the center of the lower end of the tray to cooperate with the outer diameter of the bearing, and the coaxial rotation support cooperation between the tray and the fixed seat is realized through the bearing.

[0047] 3. Sliding limit rod

[0048] The sliding limit rod is composed of a front rod segment 5.3, a middle rod segment 5.2 and a tail rod segment 5.1. The front rod segment is a square rod segment, the middle rod segment is a T-shaped rod segment, the cross bar portion of the T-shaped rod segment is connected to the front rod segment, and its cross section is a square rod segment that matches the rectangular hole on the fixing seat, and the cross-sectional area of ​​the square rod segment is larger than the cross-sectional area of ​​the front rod segment. A right-angle notch is provided on one side of the vertical rod portion of the T-shaped rod segment close to the lower end, and a V-shaped protrusion 5.4 extending in the vertical direction is provided in the middle of the vertical surface of the right-angle notch, and a screw through hole 5.5 is provided on the V-shaped protrusion, and the screw through hole is an oblong hole in the vertical direction. The tail rod segment is a cylindrical rod segment, and its outer diameter matches the outer diameter of the circular hole radially arranged on the fixing seat, and an external thread is formed at the tail end of the tail rod segment.

[0049] The sliding limit rod is fitted through the horizontal side of the middle T-shaped rod section and the tail rod section and the middle through hole on the fixed seat, and is fitted with the spring sleeve on the outside of the fixed seat on the tail rod section, and is threadedly connected to the nut at the tail end to achieve the pressure adjustment function of the sliding limit rod in the horizontal direction.

[0050] 4. Positioning rod

[0051] The positioning rod is a vertical rod, and a bearing mounting column 8.1 is formed on the upper end of the positioning rod, which cooperates with the inner ring of the positioning bearing so that the positioning bearing contacts the outer ring surface of the motor stator fixed in the tray. A square through hole 8.2 is formed on the lower part of the positioning rod, and the square through hole matches the shape of the front rod section of the sliding limit rod. The positioning rod forms an insertion fit with the front rod section of the sliding limit rod through the square through hole, and a tightening threaded hole is formed on the side of the square through hole of the positioning rod. By installing a tightening screw in the tightening threaded hole, the positioning rod and the sliding limit rod are fixedly connected.

[0052] 5. Limit bracket

[0053] The limit bracket is in an inverted L-shaped structure as a whole, and an inner extension joint is provided at the lower end of the vertical arm, and the inner extension joint is fixed with the thread on the side of the bushing rotating shaft, and the vertical arm extends outward to a certain extent to avoid interference during the rotation of the pallet. A lower limit block is formed at the tail end of the horizontal arm, and two screw holes are formed on the lower limit block. The lower limit block is aligned with the L-shaped notch on the pallet, and the limit bracket is fixedly connected to the pallet by installing screws in the two screw holes and the corresponding threaded holes on the pallet.

[0054] 6. Scraper

[0055] The front end of the scraper adopts a triangular cutting edge 7.1, and a limited arc surface 7.2 is set at the bottom of the triangular cutting edge. The arc height is 1mm, and the high point of the arc is 0.05mm longer than the high point of the triangular tip, ensuring that when the high point of the arc contacts the inner wall of the bearing bushing, the gap between the triangular tip and the inner wall of the bearing bushing is 0.05mm. The tail end of the scraper is a V-shaped groove 7.3, which cooperates with the V-shaped protrusion of the sliding limit rod to play a limiting role in the XY direction. A threaded hole 7.4 is formed in the middle of the V-shaped groove. By installing screws in the threaded hole and the corresponding bolt through hole on the sliding limit rod, the scraper can be adjusted and fixed in the Z direction.

[0056] A method for quantitatively applying glue to the stator and rotor seats of a shaft drive motor, using the quantitatively applying glue device described above. The steps are as follows:

[0057] 1. Assemble the connecting tray, fixed seat, sliding limit rod, and install them on the rotating shaft of the bushing. At this time, the spring on the sliding limit rod contacts the lock nut and generates a slight elastic force;

[0058] 2. Place the motor stator on a pallet, fix the lever gauge seat equipped with the lever gauge on the frame where the bearing bushing is installed, place the lever gauge head against the outer wall of the motor stator, rotate the pallet, use the cross alignment method, screw the positioning screws connected to the side ring edge of the pallet, align the motor stator, make the motor stator coaxial with the bushing rotation axis and fix them, and mark the highest point of the stator outer ring.

[0059] 3. Install the appropriate scraper on the sliding limit rod, adjust the scraper height up and down, and ensure that the lower end face of the scraper is in contact with the lateral end face connected to the inner wall of the bearing bushing.

[0060] 4. Fix the lower end of the limit bracket to the bearing bushing with screws, press the tail end of the limit bracket cross arm against the L-shaped notch on the pallet, and connect the screws to fix the pallet.

[0061] 5. Install and adjust the positioning rod to ensure that when the arc high point at the lower end of the scraper is in contact with the inner wall of the stator bushing, the bearing at the upper end of the positioning rod is in contact with the outer ring surface of the motor stator. The contact point is the highest position of the mark described in step 2.

[0062] 6. Rotate the sliding limit rod at a constant speed to drive the scraper, and apply the glue in front of the triangular tip of the scraper as it rotates. After completing the first circle of gluing, rotate it two more circles at a constant speed to ensure that the glue layer is evenly applied, and complete the conformal gluing of the inner wall of the bearing bushing.

[0063] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A quantitative glue coating device for the stator and rotor seats of a shaft drive motor, characterized in that: It includes a tray, a fixed seat, a sliding limit rod, a positioning rod, a limit bracket, a scraper, a positioning bearing, a spring and a nut; The upper end of the fixing seat is coaxially rotatably supported and matched with the lower end of the tray, and the lower end of the fixing seat is plug-connected with the center hole of the rotating shaft of the bushing to be coated with glue in a clearance fit manner. A cylindrical platform is arranged at the center of the tray, and the cylindrical platform is fixedly connected with the rotating shaft of the bushing through an inverted L-shaped limiting bracket; A guide through hole in the radial direction is provided in the middle of the fixed seat; the sliding limit rod is composed of a front rod section, a middle rod section and a tail rod section, and the middle rod section is a T-shaped rod section; the front rod section of the sliding limit rod is fixedly connected with the lower part of the positioning rod, and the cross rod part and the tail rod section of the middle rod section of the sliding limit rod form a sliding fit with the guide through hole on the fixed seat in a limited manner along the circumferential direction, and the spring is sleeved on the outside of the fixed seat on the tail rod section, and the two ends of the spring are respectively pressed and contacted with the side surface of the fixed seat and the nut installed at the tail end of the tail rod section; The scraper is fixedly connected to the lower end of the vertical rod part of the middle rod section with the cutting edge facing outward, and extends into the inner cavity of the bushing rotating shaft. A set gap is retained between the highest point of the scraper cutting edge and the inner cavity surface of the bushing rotating shaft through a limiting arc surface arranged at the lower part of the cutting edge. A positioning bearing is installed on the upper end of the positioning rod, and the positioning bearing is in contact with the outer ring surface of the motor stator supported and fixed in the tray.

2. The quantitative glue coating device for the stator and rotor seats of the shaft drive motor according to claim 1 is characterized in that: The upper part of the fixed seat is formed with an upper cylindrical section, and the center of the lower end of the tray is formed with a bearing hole. The upper end of the fixed seat and the lower end of the tray are coaxially rotated and supported by the bearings installed in the upper cylindrical section and the bearing hole; the guide through hole in the middle part of the fixed seat is composed of a rectangular hole and a circular hole; the cross bar part of the middle rod section of the sliding limit rod is a square rod section matching the rectangular hole on the fixed seat; the square rod section forms a through-fitting limit fit with the rectangular hole on the fixed seat, and the tail rod section of the sliding limit rod forms a through-fitting fit with the circular hole on the fixed seat.

3. The quantitative glue coating device for the stator and rotor seats of the shaft drive motor according to claim 1 is characterized in that: A right-angled notch is provided on one side of the vertical rod part of the middle rod section of the sliding limit rod near the lower end, and a V-shaped protrusion extending in the up-down direction is provided in the middle of the vertical surface of the right-angled notch, and a screw through hole is provided on the V-shaped protrusion, and the screw through hole is an oblong hole along the up-down direction; a V-shaped groove is provided at the tail end of the scraper, and the V-shaped groove is limitedly matched with the V-shaped protrusion of the sliding limit rod, and a threaded hole is formed in the middle of the V-shaped groove, and the scraper can be adjustably fixed on the sliding rod along the up-down direction by installing screws in the threaded hole and the corresponding screw through hole on the sliding limit rod.

4. The quantitative glue coating device for the stator and rotor seats of the shaft drive motor according to claim 1 is characterized in that: The gap between the highest point of the scraper blade edge and the inner cavity surface of the bushing rotating shaft is 0.05mm.

5. A method for applying glue using the quantitative gluing device for the stator and rotor seats of a shaft drive motor according to any one of claims 1 to 4, comprising the following steps: Step 1: Assemble the connecting tray, the fixing seat, the sliding limit rod, and install them on the bushing rotating shaft. At this time, the spring on the sliding limit rod contacts the lock nut and generates a slight elastic force; Step 2: Place the motor stator on the pallet, fix the lever gauge seat with the lever gauge on the frame where the bearing bushing is installed, place the lever gauge head against the outer wall of the motor stator, rotate the pallet, use the cross alignment method, screw the positioning screws connected to the side ring edge of the pallet, align the motor stator, make the motor stator coaxial with the bushing rotation axis and fix it, and mark the highest point of the stator outer ring; Step 3: Install an appropriate scraper on the sliding limit rod, and adjust the scraper height up and down to ensure that the lower end surface of the scraper is in contact with the lateral end surface connected to the inner wall of the bearing bushing; Step 4: Fix the lower end of the limit bracket to the bearing bushing with screws, press the tail end of the limit bracket cross arm against the L-shaped notch on the pallet, and connect the screws to fix the pallet; Step 5, install and adjust the positioning rod to ensure that the upper end bearing of the positioning rod fits with the outer ring surface of the motor stator when the arc high point of the lower end of the scraper is in contact with the inner wall of the stator bushing, and the contact point is the highest position of the mark described in step 2; Step 6. Rotate the sliding limit rod at a constant speed to drive the scraper, and apply the glue in front of the triangular tip of the scraper as it rotates. After completing the first circle of gluing, rotate it two more circles at a constant speed to ensure that the glue layer is evenly applied, and complete the conformal gluing of the inner wall of the bearing bushing.

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