CN102601607B - Automatic press bearing machine - Google Patents

Abstract

The invention relates to a bearing press-fitting device, in particular to an automatic bearing press-fitting machine for motor rotors. The invention aims at providing the automatic bearing press-fitting machine which is capable of pressing and fitting rotors at the two ends at one time, is simple to operate, safe and reliable, high in press-fitting efficiency and good in press-fitting quality. The automatic bearing press-fitting machine comprises a base, press-fitting cylinders, a left bearing supply mechanism, a right bearing supply mechanism, a left bearing locating mechanism, a right bearing locating mechanism and a rotor locating mechanism; the left and the right bearing supply mechanisms supply bearings to the left and the right bearing locating mechanisms; the bearings are located by the left and the right bearing locating mechanisms; the left bearing locating mechanism and the rotor locating mechanism are pushed by a piston rod of the press-fitting cylinders to slide to the position of the right bearing locating mechanism to press and fit the bearings at the two ends at one time. In addition, the cylinders in the whole device are all provided with magnetic switches. A PLC (programmable logic controller) can automatically control the operation of the whole device by the signals from the magnetic switches to the PLC so as to press and fit the bearings at the two ends automatically.

Description

Automatic press bearing machine

technical field

The invention relates to a bearing pressing device, in particular to an automatic bearing pressing machine for motor rotors.

Background technique

Existing motor rotor bearing press-fitting device has two kinds of vertical type and horizontal type. For the vertical bearing press-fitting device, the operator needs to manually put one bearing into the lower press-fit mold, put the rotor into the press-fitting machine, put the other bearing into the upper end of the rotor shaft, and hold the rotor by hand to carry out the bearing at both ends. Press-fitting, this kind of press-fitting device, the efficiency of the press-fitting process is low, the operation risk factor is relatively high, and the labor intensity of the operator is relatively high. Although the horizontal bearing press-fitting machine reduces the risk factor of the operator to a certain extent, when press-fitting, one end of the rotor shaft is pressed first, and then the other end of the shaft is pressed. This press-fitting method makes the rotor bearing The press-fitting efficiency is low, and the press-fitting quality of the bearings at both ends of the shaft will also be affected.

Contents of the invention

In order to solve the above technical problems, the present invention provides an automatic press-fitting machine for bearings at both ends of the rotor, which is easy to operate, safe and reliable, high in press-fit efficiency, and good in press-fit quality.

The automatic press-fit bearing machine of the present invention includes a base, a press-fit cylinder, a left bearing supply mechanism, a right bearing supply mechanism, a left bearing positioning mechanism, a right bearing positioning mechanism and a rotor positioning mechanism. mechanism and the right bearing positioning mechanism are all fixedly connected on the base, the left bearing positioning mechanism and the rotor positioning mechanism are slidingly connected on the base from left to right, the press-fit cylinder, the left bearing positioning mechanism, the rotor positioning mechanism and the right bearing positioning mechanism Set on the base from left to right; the left and right bearing positioning mechanisms all include a bearing inlet at the upper end and a bearing outlet on one side, the bearing inlet is connected with the bearing outlet, and the bearing outlets of the left and right bearing positioning mechanisms All face the rotor positioning mechanism, the axis of the piston rod of the press-fit cylinder, the bearing outlet axis of the left bearing positioning mechanism, the rotor axis of the rotor positioning mechanism and the bearing outlet axis of the right bearing positioning mechanism are on the same straight line. The piston rod is used to push the left bearing positioning mechanism and the rotor positioning mechanism to slide to the right; the left and right bearing supply mechanisms are vibrating hoppers, and the bearing outlets of the left and right vibrating hoppers are respectively connected to the bearing inlet positions of the left and right bearing positioning mechanisms. Correspondingly, the bearing outlet end of the left vibrating hopper is provided with a sliding cover plate, and the bearing outlet end of the left vibrating hopper is provided with a cover plate cylinder, and the piston rod of the cover plate cylinder extends upwards to connect with the lower end of the sliding cover plate; the rotor positioning mechanism It includes a V-shaped positioning seat and a compression cylinder located directly above the positioning seat. The end of the piston rod of the compression cylinder is provided with an elastic compression piece; A magnetic switch for detecting the position of the piston rod in the cylinder. Each magnetic switch is electrically connected to a programmable logic controller (PLC). When the magnetic switch on the compression cylinder outputs a compression signal, the PLC outputs a start signal to the cover cylinder. The cover plate cylinder starts to make its piston rod move. When the magnetic switch on the cover plate cylinder outputs a closed signal, the PLC outputs a start signal to the press-fit cylinder, and the piston rod action of the press-fit cylinder pushes the left bearing positioning mechanism to the right for two End bearing press fit.

The difference between the present invention and the prior art lies in that: the automatic bearing press-fitting machine of the present invention adopts a vibrating hopper for the bearing supply mechanism, which can automatically supply the bearings without manpower operation and saves human resources; it adopts the right bearing positioning mechanism to fix and the left bearing positioning mechanism And the rotor positioning mechanism slides to the right through the press-fitting cylinder on the left to realize the one-time press-fitting of the bearings at both ends, without the need for press-fitting of the two ends of the cylinder, saving the cost of the cylinder, good positioning effect, and high press-fitting efficiency; there are three in the device Each cylinder is provided with a magnetic switch, and the programmable controller controls the successive actions of the three cylinders according to the signal transmitted by the magnetic switch, realizing the automatic operation of the whole device. The whole process is completed automatically, the pressing effect is good, the operation is simple, and the cost is low.

The automatic press-fit bearing machine of the present invention, wherein the base is fixed with guide rails arranged in the left and right directions, and the left bearing positioning mechanism and the rotor positioning mechanism are respectively clamped on the guide rails through sliders and can slide left and right along the guide rails. The guide rail structure is adopted, the left and right direction positioning is better, and the sliding effect is good.

The automatic press-fit bearing machine of the present invention, wherein a return spring is connected between the press-fit cylinder and the left bearing positioning mechanism, and the return spring is used to drive the left bearing positioning mechanism to slide to the left to the bearing inlet of the left bearing positioning mechanism Corresponding to the bearing outlet end of the left vibrating hopper. The left bearing positioning mechanism is pulled back to the left by the return spring, the reset effect is good, the cost is low, and the automatic reset can be easily achieved, and there is no need to fix the piston rod of the press-fitted cylinder with the left bearing positioning mechanism, and the automatic operation of the whole device The effect is good.

The automatic press-fit bearing machine of the present invention, wherein the left and right bearing positioning mechanisms all include a bearing guide block, a press-fit mold and a bearing baffle fixedly connected in sequence, and a bearing guide hole is opened on the bearing guide block, and the The upper port of the bearing guide hole is the bearing inlet of the bearing positioning mechanism; the press-fitting mold is provided with a bearing positioning shaft to be press-fitted; the left end of the right-pressing mold is provided with a bearing guide groove; There is a press-fitting mold center hole connected with the guide groove, the press-fitting mold center hole is fixedly installed with the positioning shaft of the bearing to be pressed, and the left end of the positioning shaft of the bearing to be pressed is provided with a bearing buffer groove; the right The left end of the press-fit tire is fixed with a bearing baffle. The bearing baffle is provided with a center hole of the bearing baffle as the bearing outlet. The bearing guide hole, the bearing guide groove, and the bearing buffer groove are connected with the center hole of the bearing baffle. There are also two positioning holes connected to the center hole of the bearing baffle on the bearing baffle, a spring is fixed in each of the positioning holes, and a bearing sliding shaft is fixed at the end of the spring, and the sliding shaft of the bearing baffle points to the bearing baffle One end of the central hole has a hemispherical end, and when the spring is in a natural state, the hemispherical end of the sliding shaft of the retaining bearing extends into the central hole of the bearing baffle; The positional relationship between them is the same as that of the right bearing positioning mechanism.

The left and right bearing positioning mechanisms in the present invention adopt the above structure, and the bearings run smoothly after entering the bearing inlet, and can be accurately positioned in the bearing buffer groove, and the positioning is better; and the hemispherical end of the bearing sliding shaft can be gently Block the bearing to prevent the bearing from sliding out from the bearing outlet, and make full preparations for the next step of bearing press-fitting, and because the sliding shaft of the blocking bearing is set with a hemispherical end structure, it is easier for the rotor to place the bearing after the press-fitting is completed. Bring out.

The automatic press-fit bearing machine of the present invention, wherein the positioning shaft of the bearing to be press-fit is provided with two annular grooves, and rubber rings are arranged in the annular grooves. Two rubber rings are used on the positioning shaft of the bearing to be press-fitted to buffer the bearing falling to the bearing buffer groove and protect the bearing. The manufacturing is simple, the cost is low, and the use effect is good.

The automatic press-fitting bearing machine of the present invention will be further described below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is the structural representation of automatic press-fitting bearing machine of the present invention;

Fig. 2 is the perspective view of the bearing guide block in the automatic press-fitting bearing machine of the present invention;

Fig. 3-1 is a perspective view of the tire mold pressed in the automatic bearing press machine of the present invention;

Fig. 3-2 is a left view of the right press-fit mold in the automatic press-fit bearing machine of the present invention;

Figure 4-1 is a perspective view of the positioning shaft of the bearing to be pressed in the automatic bearing press machine of the present invention;

Fig. 4-2 is a top view of the positioning shaft of the bearing to be pressed in the right press-fit mold in the automatic bearing press-fit machine of the present invention;

Fig. 5 is a perspective view of the right bearing baffle in the automatic bearing pressing machine of the present invention.

Detailed ways

As shown in Figure 1, the automatic press-fitting bearing machine of the present invention comprises a rotor positioning mechanism 7, a left vibrating hopper 3 (left bearing supply mechanism), a right vibrating hopper 4 (right bearing supply mechanism) and a press-fitting cylinder 2, each of the above structures All are fixed on the base 1, the left bearing positioning mechanism 5 and the right bearing positioning mechanism 6 are respectively located at the left and right ends of the rotor positioning mechanism 7, and the press-fit cylinder 2 is fixed on the left end of the left bearing positioning mechanism 5 on the base 1. Wherein the axis of the piston rod 21 of the press-fit cylinder 2, the bearing positioning axis of the left bearing positioning mechanism 5, the rotor axis of the rotor positioning mechanism 7, and the bearing positioning axis of the right bearing positioning mechanism 6 are on the same straight line.

As shown in Figure 1, the press-fit cylinder 2 and the right bearing positioning mechanism 6 are fixed on the base 1, and two parallel guide rails 8 are fixed on the base 1, and the left bearing positioning mechanism 5 and the rotor positioning mechanism 7 pass through the slide plates 55, 75 The slide blocks 56, 76 are structurally clamped on the guide rail 8 and can slide left and right along the guide rail 8; wherein the rotor positioning mechanism 7 includes a V-shaped positioning seat 73, a compression cylinder 74 located directly above the positioning seat 73, and a compression cylinder 74 An elastic pressing member 75 is provided at the end of the piston rod, and the elastic pressing member 75 is used for clamping and positioning the rotor on the positioning seat 73 .

The left bearing positioning mechanism 5 and the right bearing positioning mechanism 6 have the same structure and relative positions, and all include bearing guide blocks 51, 61 fixedly connected in sequence (the guide blocks 51, 61 are respectively provided with bearing guide holes 511, 611, as shown in Figure 2 Shown), press-fit tires 52,62 and bearing baffles 54,64, press-fit tires 52,62 are provided with the bearing positioning shafts 53,63 to be pressed.

Since the structure of the left bearing positioning mechanism 5 and the right bearing positioning mechanism 6 is the same, the specific structures of the left and right bearing positioning mechanisms 5 and 6 will be described below by taking the right bearing positioning mechanism 6 as an example:

As shown in Figure 1, the bearing outlet end of the right vibrating hopper 4 corresponds to the upper port of the bearing guide hole 611, as shown in Figure 3-1, the left end of the right press-fit tire tool 62 is provided with a bearing guide groove 623, and the right press-fit tire Tool 62 is also provided with a center hole for press-fitting mold that communicates with guide groove 623. The center hole is composed of two sections of holes with different diameters. As shown in Figure 3-2, the diameter of the left end hole 621 pointing to the rotor side is larger than that of the right end Hole 622 diameters, the piston rod 21 outer diameter of press-fitting cylinder 2 is greater than the diameter of right end hole 622 (that is: the diameter of piston rod 21 outer diameter of press-fitting cylinder 2 is greater than the diameter of left end hole 522 on the left side press-fitting mold 52, prevents piston The rod 21 extends into the left end hole 522 of the left press-fitting tool 52, which is convenient for the piston rod 21 to push the left press-fitting tool 52 to the right), and the positioning shaft 63 of the bearing to be pressed is installed in the left end hole 621, as shown in Figure 4-1 , as shown in Figure 4-2, the left end of the positioning shaft 63 is provided with a bearing buffer groove 631; combined with Figure 1, 3-1, and 4-1, the bearing guide hole 611, the bearing guide groove 623 and the bearing buffer groove 631 are up and down Through; as shown in Fig. 1 and Fig. 5, the left end of the right press-fit mold 62 is fixed with a bearing baffle 64, and the bearing baffle 64 is provided with a center hole 641 of the bearing baffle for the rotor shaft to extend into the press-fit bearing (the bearing outlet), the bearing baffle 64 is also provided with two positioning holes 642 communicating with the center hole 641 of the bearing baffle, a spring 643 is fixed in the positioning hole 642, and a bearing sliding shaft 644 is fixed at the end of the spring 643, and the sliding shaft of the bearing 644 has a hemispherical end at one end pointing to the center hole; when the spring 643 was in a natural state, the hemispherical end of the bearing sliding shaft 644 stretched into the center hole 641 of the bearing baffle plate, and was used to place the spring in the bearing buffer groove 631. The blocking of the bearing prevents the bearing from sliding out through the center hole 641 of the bearing baffle; the end of the sliding shaft 644 of the blocking bearing is set in a hemispherical shape, so that the bearing in the bearing buffer groove 631 can be easily pressed by the rotor shaft when the bearing is pressed. Take it out after installation to reduce the resistance of taking it out.

As shown in Figure 4-2, there are two annular grooves 632 on the positioning shaft 63 of the bearing to be pressed, and rubber rings are installed on the annular grooves 632, and the positioning shaft 63 is installed in the left end hole of the press-fitting mold 62 through the rubber rings In 621, as shown in Fig. 4-1 and Fig. 5, steel ball holes 633 and 645 are provided at the relative positions on the bearing baffle plate 64 and the positioning shaft 63, and the left end of the positioning shaft 63 is fixed on the position of the positioning shaft 63 by three steel balls. The right end of bearing baffle plate 64.

As shown in Figure 1, since the left bearing positioning device 5 can slide left and right on the guide rail 8, the bearing outlet end of the left vibrating hopper 3 is provided with a sliding cover 31, which is used to move the left vibrating hopper before the left bearing positioning device 5 slides. 3 bearings at the outlet block; the cover plate cylinder 32 is fixed below the bearing outlet end of the left vibrating hopper 3, and the piston rod of the cover plate cylinder 32 stretches out upwards to connect the lower end of the sliding cover plate 31 for driving the sliding cover plate 31 to slide up and down. In addition, as shown in Figure 1, a return spring 11 is connected between the right end of the press-fit cylinder 2 and the left bearing guide block 51. After the bearing press-fit is completed and the piston rod 21 of the press-fit cylinder 2 retracts, the return spring 11 uses Its resetting elastic force slides the left bearing positioning mechanism 5 on the left slide plate 55 to the left along the guide rail 8 through the slide block 56. After the return spring 11 returns, the upper port of the left bearing guide block 51 and the bearing outlet end of the left vibrating hopper 3 relatively.

Press-fit cylinder 2, cover plate cylinder 32 and compression cylinder 74 are all provided with a magnetic switch (not shown) for detecting the position of the piston rod in the cylinder, and each magnetic switch is connected with programmable logic controller (PLC) electric When the magnetic switch on the compression cylinder 74 outputs a compression signal, the PLC outputs a start signal to the cover cylinder 32, and the cover cylinder 32 starts to make its piston rod move. When the output of the magnetic switch on the cover cylinder 32 is closed When signal, PLC output start signal to press-fit cylinder 2, and the action of piston rod 21 of press-fit cylinder 2 pushes left bearing positioning mechanism 5 to the right and carries out bearing press-fit at both ends. In addition, the stroke of the piston rod of the press-fit cylinder 2 can be adjusted by adjusting the position of the magnetic switch on the press-fit cylinder 2 to adapt to different types of rotors.

In the automatic bearing pressing machine of the present invention, except that the rotor needs to be manually placed into the V-shaped positioning seat 73, and the bearings are poured into the left and right vibrating hoppers 3 and 4, all other actions are automatically operated under the control of the PLC. Bearings at both ends are press-fitted, with high press-fitting efficiency and good press-fitting effect.

When the automatic bearing press-fitting machine of the present invention is in use, the rotor is horizontally placed left and right in the V-shaped groove of the V-shaped positioning seat 73, the bearings are poured into the left and right vibrating hoppers 3 and 4, and the start switch is pressed to press The elastic pressing member 75 at the lower end of the cylinder 74 piston rod moves downwards to fix the clamping rotor; at the same time, the bearings in the left and right vibrating hoppers 3 and 4 all move from the hopper outlet to the bearing guide block 51 upper end bearing inlet, ( The motion trajectory of the bearing after coming out from the left and right vibrating hoppers 3 and 4 takes the right bearing as an example: the bearings in the right vibrating hopper 4 pass through the bearing guide hole 611 in the bearing guide block 61 respectively, and continue downward through the bearing guide groove 623 to the bearing buffer slot 631, blocked by two bearing sliding shafts 644 in the bearing baffle 64, and will not slide out through the center hole 641 of the bearing baffle); when the magnetic switch on the compression cylinder 74 outputs a compressed signal , the PLC outputs a starting signal to the cover cylinder 32, and the cover cylinder 32 starts to make its piston rod drive the sliding cover 31 to move upward, and the bearing outlet end of the left vibrating hopper 3 is closed; when the magnetic switch on the cover cylinder 32 outputs When the signal is closed, the PLC outputs a start signal to the press-fit cylinder 2, and the piston rod 21 of the press-fit cylinder 2 begins to move to the right, and the piston rod 21 is against the left end of the left press-fit mold 52, so that the left bearing positioning device 5 moves along the guide rail. 8. Move to the right, the bearing in the left bearing buffer slot 531 is positioned at the rotating shaft at the left end of the rotor, and under the force of the piston rod 21 of the press-fit cylinder 2, the rotor and the rotor positioning mechanism 7 are further pushed to the right to press-fit the tire to the right. The bearing in the tool 62 is positioned at the rotating shaft at the right end of the rotor, and under the further thrust of the piston rod 21, the press-fitting of the bearings at both ends is realized. After the pressing is completed, the left bearing positioning device 5 slides to the left under the active force of the back-moving spring 11 and resets. Take out the press-fitted rotor, put in another press-fitted rotor again, and repeat the above-mentioned press-fitting process.

The above-mentioned embodiments are only descriptions of preferred implementations of the present invention, and are not intended to limit the scope of the present invention. Variations and improvements should fall within the scope of protection defined by the claims of the present invention.

Claims (5)

1. an automatic press mounting bearing machine, it is characterized in that: comprise base (1), press-fit cylinder (2), left bearing feed mechanism (3), right bearing feed mechanism (4), left bearing detent mechanism (5), right bearing detent mechanism (6) and rotor positioning mechanism (7), describedly press-fit cylinder (2), left, right bearing feed mechanism (3, 4) and right bearing detent mechanism (6) be all fixedly connected on base (1), described left bearing detent mechanism (5) and rotor positioning mechanism (7) horizontally slip and are connected on base (1), describedly press-fit cylinder (2), left bearing detent mechanism (5), rotor positioning mechanism (7) and right bearing detent mechanism (6) are located on base (1) from left to right,

A described left side, right bearing detent mechanism (5, 6) include the bearing entrance of upper end and the outlet of the bearing of a side, described bearing entrance is connected with bearing outlet, a described left side, right bearing detent mechanism (5, 6) bearing outlet is all towards rotor positioning mechanism (7), press-fit the axis of cylinder (2) piston rod (21), the bearing outlet axis of left bearing detent mechanism (5), the bearing outlet axis of the rotor axis of rotor positioning mechanism (7) and right bearing detent mechanism (6) is on same straight line, the described piston rod (21) that press-fits cylinder (2) is for promoting left bearing detent mechanism (5) and rotor positioning mechanism (7) slides to the right,

Described left and right bearing feed mechanism (3,4) is vibrating bunker, the bearing outlet of left and right vibrating bunker (3,4) is corresponding with the bearing entry position of left and right bearing detent mechanism (5,6) respectively, the bearing port of export of left vibrating bunker (3) is provided with slide cover (31), the bearing port of export below of left vibrating bunker (3) is provided with cover plate cylinder (32), and the piston rod of cover plate cylinder (32) protrudes upward and connects slide cover (31) lower end;

Described rotor positioning mechanism (7) comprises V-arrangement positioning seat (73) and is located at the clamping cylinder (74) directly over positioning seat (73), and the piston rod end of clamping cylinder (74) is provided with elastic pressed piece (75);

Describedly press-fit cylinder (2), on cover plate cylinder (32) and clamping cylinder (74), be equipped with the magnetic switch for detection of piston bar position, each magnetic switch is electrically connected to Programmable Logic Controller respectively, when the magnetic switch output on clamping cylinder (74) has compressed signal, Programmable Logic Controller output enabling signal is to cover plate cylinder (32), cover plate cylinder (32) starts makes its piston rod action, when the magnetic switch on cover plate cylinder (32) is exported enclosed signal, Programmable Logic Controller output enabling signal is to press-fiting cylinder (2), piston rod (21) action that press-fits cylinder (2) promotes to carry out bearings at both ends to the right by left bearing detent mechanism (5) and press-fits.

2. automatic press mounting bearing machine according to claim 1, it is characterized in that: on described base (1), be fixed with the guide rail (8) that left and right directions arranges, described left bearing detent mechanism (5) and rotor positioning mechanism (7) are installed on guide rail (8) above and can be horizontally slipped along guide rail (8) by slide block (56,76) respectively.

3. automatic press mounting bearing machine according to claim 2, it is characterized in that: described in press-fit between cylinder (2) and left bearing detent mechanism (5) and be connected with back-moving spring (11), described back-moving spring (11) is for driving described left bearing detent mechanism (5) to slide into the bearing entrance of left bearing detent mechanism (5) and the bearing port of export opposite position of left vibrating bunker (3) left.

4. automatic press mounting bearing machine according to claim 3, is characterized in that: described left and right bearing detent mechanism (5,6) includes bearing guide pad (51,61), press fitting clamping fixture (52,62) and the bearing baffle (54,64) being fixedly connected sequentially,

On described bearing guide pad (51,61), offer bearing pilot hole (511,611), the upper port of described bearing pilot hole (511,611) is the bearing entrance of bearing detent mechanism (5,6);

In described press fitting clamping fixture (52,62), be provided with and treat pressing bearing locating shaft (53,63), right press fitting clamping fixture (62) left end offers bearing gathering sill (623), on right press fitting clamping fixture (62), also offer the press fitting clamping fixture centre bore (621,622) connecting with gathering sill (623), pressing bearing locating shaft (63) is treated in fixed installation in described press fitting clamping fixture centre bore (621), described in treat that pressing bearing locating shaft (63) left end offers bearing buffer memory groove (631);

Described right press fitting clamping fixture (62) left end is fixed with bearing baffle (64), on described bearing baffle (64), offer the bearing baffle centre bore (641) as bearing outlet, bearing pilot hole (611), bearing gathering sill (623), bearing buffer memory groove (631) is connected with bearing baffle centre bore (641), on described bearing baffle (64), also offer two locating holes (642) that are connected with bearing baffle centre bore (641), in locating hole described in each (642), be fixed with spring (643), spring (643) end is fixed with gear shaft and holds slide-bar (644), one end that gear shaft holds slide-bar (644) sensing bearing baffle centre bore (641) has domed ends, described spring (643) in the raw time described in the gear shaft domed ends of holding slide-bar (644) stretch in bearing baffle centre bore (641),

Internal structure and the position relationship between each structure of described left bearing detent mechanism (5) are identical with described right bearing detent mechanism (6).

5. automatic press mounting bearing machine according to claim 4, is characterized in that: described in treat to offer two cannelures (632) on pressing bearing locating shaft (63), cannelure is equipped with rubber ring in (632).

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