Casing upper pressure coil protection device

Abstract

The purpose of the present invention is to provide a device for pressing a protective coil on a casing, which can ensure the alignment of the protective coil with the wire clip on the casing and improve the pressing effect of the protective coil. A device for pressing a protective coil on a casing, comprising a motor positioning seat, the motor positioning seat is formed with a placement groove opening forward, a pressing plate is provided on the front side of the motor positioning seat, the pressing plate is connected and fixed to the output end of the pressing device, the pressing plate moves backward under the action of the pressing device, a positioning groove is formed on the rear end surface of the pressing plate, a positioning column extending backward is provided in the middle of the positioning groove and the positioning groove is arranged in a ring shape, the depth of the positioning groove is less than or equal to the length of the outer section of the protective coil, when the motor is placed in the placement groove, the positioning column is aligned with the wire hole on the motor casing, when the protective coil is sleeved on the positioning column, the outer wall of the outer section of the protective coil contacts the wall of the positioning groove.

Description

Technical Field

[0001] The invention relates to motor assembly equipment, in particular to a coil protection device on a casing. Background Art

[0002] The motor assembly requires the press-fitting of the coil guard and the casing, and the press-fitting of the stator and the casing. The casing and the stator must be press-fitted first, and then the lead wires of the stator must be passed through the wire holes of the casing. Finally, the coil guard must be press-fitted into the wire holes of the casing, and the lead wires must be passed through the coil guard.

[0003] The protective coil comprises an inner section of the protective coil extending into the wire hole and an outer section of the protective coil with an outer diameter larger than that of the inner section of the protective coil. The outer section of the protective coil is used for positioning to prevent the protective coil from falling into the accommodating cavity of the motor housing.

[0004] If the retaining coil is not aligned with the wire clip during press-fitting, and the axis of the retaining coil is relatively tilted with the axis of the wire hole, the press-fitting effect of the retaining coil will be poor, the retaining coil will not be pressed into place, and the retaining coil will easily detach from the housing. In addition, the retaining coils are all press-fitted by workers one by one, and the labor intensity of the workers is low, and the tooling efficiency is low. Summary of the invention

[0005] The purpose of the present invention is to provide a casing upper guard coil pressing device which can ensure the alignment of the guard coil with the casing upper line clamp and can improve the guard coil pressing effect.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a device for pressing and protecting coils on a casing, comprising a motor positioning seat, the motor positioning seat is formed with a placement groove opening forward, a pressure plate is provided on the front side of the motor positioning seat, the pressure plate is connected and fixed to the output end of the clamping device, the pressure plate moves backward under the action of the clamping device to abut against the motor in the placement groove, a positioning groove is formed on the rear end surface of the pressure plate, a positioning column extending backward is provided in the middle of the positioning groove and the positioning groove is arranged in a ring shape, the depth of the positioning groove is less than or equal to the length of the outer section of the protection coil, when the motor is placed in the placement groove, the positioning column is aligned with the wire hole on the motor casing, and when the protection coil is sleeved on the positioning column, the outer wall of the outer section of the protection coil contacts the wall of the positioning groove.

[0007] When the device of the present invention is used, the motor is placed in the placement groove, the protective coil sleeve is placed on the positioning, and the outer section of the protective coil is located in the positioning groove. The positioning groove and the positioning column are used to realize the positioning and fixing of the protective coil, and the protective coil is straightened so that the protective coil and the wire hole on the casing can be better aligned. Finally, the pressing device is started to make the pressing plate drive the protective coil to move backward to press the inner section of the protective coil into the wire hole of the motor casing. Among them, the positioning groove wall contacts the outer wall of the protective coil to realize the positioning, fixing and straightening of the protective coil, and the positioning column assists the straightening of the protective coil so that the axis of the protective coil can always be coaxial with the axis of the wire hole of the casing during the pressing process of the protective coil, so as to improve the pressing accuracy of the protective coil; at the same time, when the groove wall of the positioning groove contacts the outer wall of the protective coil, the outer diameter of the positioning column can be set smaller to reduce the friction between the protective coil and the positioning column, so as to avoid driving the protective coil to move forward and detach from the casing when the pressing plate is reset.

[0008] Preferably, the positioning column is provided with a through slot that penetrates the pressure plate in front and back for the lead wire to pass through. The above arrangement facilitates the lead wire to pass through the protective coil. Before the protective coil is pressed, the lead wire is first passed through the protective coil, and then the protective coil and the pressure plate are positioned and fixed.

[0009] Preferably, the upper surface of the pressing plate is concave to form a clearance groove connected to the through groove and the positioning groove; the width of the lower end of the clearance groove is less than the maximum distance between the left and right edges of the positioning groove. The setting of the clearance groove allows the longer lead wire to pass through the pressing plate more conveniently, so as to facilitate the press-fitting of the protective coil. The setting of the width of the lower end of the clearance groove prevents the protective coil from escaping upward from the positioning groove.

[0010] Preferably, the length of the positioning column is less than the length of the protective coil, and the length of the positioning column is less than or equal to the length of the outer section of the protective coil. The length refers to the distance along the axial direction of the protective coil. The length of the positioning column is set to make the inner section of the protective coil easier to shrink and deform, so that the inner section of the protective coil can be better pressed and tightly fitted in the wire hole of the casing.

[0011] Preferably, the inner edge shape of the positioning groove is the same as the outer edge shape of the protective coil. The above arrangement can achieve a better positioning and fixing effect between the protective coil and the pressing plate.

[0012] Preferably, the motor positioning seat is fixed on a fixed plate, and the fixed plate is provided with a dropping groove which passes through from top to bottom to communicate with the placement groove. A lifting device is provided on the lower side of the fixed plate, and a lifting block is fixed to the output end of the lifting device. The jet pipe is fixed to the lifting block and arranged upward, and the jet pipe moves upward under the action of the lifting device to extend into the placement groove.

[0013] The present invention can also be used to clean foreign matter in the casing. When using the present invention, the casing and the front cover do not need to be pressed first. After the protective coil is pressed, the pressing device is not reset first. The motor is limited by the pressing plate and the placement groove to achieve the positioning and fixation of the motor. After the stator and the casing are assembled, the motor is placed on the fixing plate, and the accommodating cavity of the motor is communicated with the drop groove. After the protective coil is pressed, the lifting device is started to allow the jet pipe to extend into the accommodating cavity of the motor casing to clean foreign matter in the casing.

[0014] Preferably, the bottom plate is provided with two motor positioning seats on the left and right, the output end of the lifting device is fixed to the middle of the lifting block, both ends of the lifting block are provided with an air jet pipe, and the output end of the pressing device is fixed to the middle of the pressing plate. The cleaning of foreign matter in the two motors of the press-fitting machine for two coil guards can be performed each time, which can improve production efficiency.

[0015] Preferably, a guide mechanism is provided between the pressing plate and the motor positioning seat, the guide mechanism comprising a guide rod fixed to the rear side of the pressing plate, and a guide slot provided on the motor positioning seat and opening forward, the guide rod extending into the guide slot, and the guide rod and the guide slot are both provided in the front-to-back direction. The above arrangement prevents the pressing plate from tilting forward and backward, so that the alignment effect of the protective coil and the casing wire hole is better.

[0016] Preferably, the inner edge of the guide groove cross section and the outer edge of the guide rod cross section are both circular, a plurality of linear bearings are fixed in the guide groove, and the guide rod is always located in the linear bearings. The above arrangement can further improve the press-fitting accuracy of the protective coil.

[0017] Preferably, the inner edges of the drop grooves are located outside the circumferential inner edges of the motor housing. The above arrangement can prevent foreign matter from falling on the fixed plate. A garbage collection box can be arranged below the fixed plate to collect foreign matter.

[0018] The invention has the advantages of being able to improve the press-fitting accuracy of the protective coil so as to improve the press-fitting tight-fitting effect of the protective coil, and also has the advantages of high production efficiency and being able to clean foreign matter in the casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A structural schematic diagram of a viewing angle of the present invention;

[0020] Figure 2 It is a structural schematic diagram of another viewing angle of the present invention;

[0021] Figure 3 A schematic diagram of the structure of the positioning groove of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the protection coil of the present invention when it cooperates with the positioning groove;

[0023] Figure 5 It is a structural schematic diagram of the guide mechanism of the present invention. DETAILED DESCRIPTION

[0024] The present invention will be further described below based on the accompanying drawings and specific embodiments.

[0025] Depend on Figures 1 to 4 As shown, a device for pressing a protective coil on a casing of the present invention comprises a fixing plate 1, on which two left and right motor positioning seats 2 are arranged, the motor positioning seats 2 are formed with a placement groove 21 opening forward, a pressing plate 3 is arranged on the front side of the motor positioning seat 2, the middle part of the pressing plate 3 is connected and fixed to the output end of a clamping device 4, the clamping device 4 is located between the two motor positioning seats 2, the pressing plate 3 moves backward under the action of the clamping device 4, a positioning groove 30 is formed on the rear end surface of the pressing plate 3, a positioning column 31 extending backward is arranged in the middle part of the positioning groove 30 and the positioning groove 30 is arranged in a ring shape, the depth of the positioning groove 30 is less than the length of the outer section 51 of the protective coil, when the motor 6 is placed in the placement groove 21, the positioning column 31 is aligned with the wire hole 61 on the casing of the motor 6, and when the protective coil 5 is sleeved on the positioning column 31, the outer wall of the outer section 51 of the protective coil contacts the circumferential groove wall of the positioning groove 30.

[0026] Among them, the positioning column 31 is provided with a through groove 32 that penetrates the pressure plate 3 front and back for the lead wire 62 to pass through. The length of the positioning column 31 is less than or equal to the length of the outer section 51 of the protective coil. The inner edge shape of the positioning groove 30 is the same as the outer edge shape of the protective coil 5.

[0027] The upper end surface of the pressing plate 3 is concave to form a clearance groove 33 connected with the through groove 32 and the positioning groove 30; the width of the lower end of the clearance groove 33 is smaller than the maximum distance between the left and right edges of the positioning groove 30, and the upper end of the clearance groove 33 is open.

[0028] The fixing plate 1 is provided with two drop grooves 11 penetrating from top to bottom to communicate with the placement groove 21. The lower side of the fixing plate 1 is fixed with a lifting device 7 through a fixing bracket 71. The output end of the lifting device 7 is fixed to the middle of the lifting block 72. The lifting block 72 is provided with an air jet 8 at both ends. The air jet 8 is fixed to the lifting block 72 and arranged upward. The air jet 8 moves upward under the action of the lifting device 7 to extend into the placement groove 21. Among them, the inner edges of the drop grooves 11 are all located on the circumferential outer side of the circumferential inner edge of the housing of the motor 6.

[0029] Depend on Figure 5As shown, a guide mechanism is provided between the pressing plate 3 and the motor positioning seat 2, and the guide mechanism includes a guide rod 91 fixed to the rear side of the pressing plate 3, and a guide groove 92 provided on the motor positioning seat 2 and opening forward, the guide rod 91 extends into the guide groove 92, and the guide rod 91 and the guide groove 92 are both provided in the front-back direction. The inner edge of the cross section of the guide groove 92 and the outer edge of the cross section of the guide rod 91 are both provided in a circular shape, a plurality of linear bearings 93 are fixed in the guide groove 92, and the guide rod 91 is always located in the linear bearing 93.

[0030] The lifting device 7 and the pressing device 4 are both cylinders and share a common air source, which is also used to supply air to the air injection pipe 8 .

[0031] When the device of the present invention is used, the motor is placed in the placement groove, the lead wire is passed through the protective coil, and then the protective coil is placed in the positioning groove of the pressing plate, and then the lead wire is straightened forward, and finally the pressing device is started to press the protective coil.

[0032] After the coil is pressed, start the lifting device and supply air to the jet pipe to clean the foreign matter in the casing. Finally, reset the lifting device and the pressing device and take out the motor.

[0033] The invention has the advantages of being able to improve the press-fitting accuracy of the protective coil so as to improve the press-fitting tight-fitting effect of the protective coil, and also has the advantages of high production efficiency and being able to clean foreign matter in the casing.

Claims

1. A casing upper pressure coil protection device, characterized in that It includes a motor positioning seat, the motor positioning seat is formed with a placement groove opening toward the front, a pressure plate is provided on the front side of the motor positioning seat, the pressure plate is connected and fixed to the output end of the clamping device, the pressure plate moves backward under the action of the clamping device, a positioning groove is formed on the rear end surface of the pressure plate, a positioning column extending backward is provided in the middle of the positioning groove and the positioning groove is arranged in a ring shape, the depth of the positioning groove is less than or equal to the length of the outer section of the protective coil, when the motor is placed in the placement groove, the positioning column is aligned with the wire hole on the motor housing, when the protective coil is sleeved on the positioning column, the outer wall of the outer section of the protective coil contacts the wall of the positioning groove; the positioning column is provided with a through groove that penetrates the pressure plate front and back for the lead-out wire to pass through; the upper end surface of the pressure plate is concave to form a clearance groove connected with the through groove and the positioning groove; the width of the lower end of the clearance groove is less than the width between the left and right edges of the positioning groove The maximum distance; the motor positioning seat is fixed on the fixing plate, and the fixing plate is provided with a dropping groove that runs through the upper and lower parts to communicate with the placement groove, and a lifting device is provided on the lower side of the fixing plate, and a lifting block is fixed to the output end of the lifting device, and the jet pipe is fixed to the lifting block and arranged upward, and the jet pipe moves upward under the action of the lifting device to extend into the placement groove; two left and right motor positioning seats are provided on the fixing plate, and the output end of the lifting device is fixed to the middle part of the lifting block, and an jet pipe is provided at both ends of the lifting block, and the output end of the clamping device is fixed to the middle part of the pressing plate; a guiding mechanism is provided between the pressing plate and the motor positioning seat, and the guiding mechanism includes a guide rod fixed to the rear side of the pressing plate, and a guide groove arranged on the motor positioning seat and opening forward, the guide rod extends into the guide groove, and the guide rod and the guide groove are both arranged along the front-rear direction.

2. The casing upper pressure coil protection device according to claim 1 is characterized in that The length of the positioning column is less than the length of the protective coil, and the length of the positioning column is less than or equal to the length of the outer section of the protective coil.

3. The casing upper pressure coil protection device according to claim 1 is characterized in that The inner edge shape of the positioning groove is the same as the outer edge shape of the protective coil.

4. The casing upper pressure coil protection device according to claim 1 is characterized in that The inner edge of the cross section of the guide groove and the outer edge of the cross section of the guide rod are both arranged in a circular shape. A plurality of linear bearings are fixed in the guide groove, and the guide rod is always located in the linear bearings.

5. The casing upper pressure coil protection device according to claim 1 is characterized in that The inner edges of the drop grooves are all located on the circumferential outer side of the circumferential inner edge of the housing of the motor.

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