CN210968289U - A bar grinder - Google Patents

Abstract

The utility model discloses a bar buffing machine belongs to the grinding equipment field. The buffing machine comprises a mounting feeding device, a material conveying device, a surface grinding device and a discharging device; the feeding device is arranged at the feeding end of the material conveying device and is used for feeding the bars to be processed into the material conveying device one by one; the surface grinding device is positioned on one side of the feeding direction of the material conveying device and is used for grinding the bar to be processed conveyed to the processing position by the material conveying device; the blanking device is arranged at the feeding tail end of the material conveying device and used for taking off the ground bar from the material conveying device. The equipment can realize the automatic operation of the whole process of feeding, processing and discharging in the bar grinding process, does not need manual intervention, effectively improves the production efficiency, and is particularly suitable for grinding and removing the surface oxide skin of the blank in the grinding process of the rotating shaft of the washing machine.

Description

A bar grinder

technical field

The utility model belongs to the field of grinding equipment, and relates to a bar material, in particular to a grinding machine for metal bar material and its application, which realizes automatic grinding and removal of oxide scale on the surface of the bar material.

Background technique

Metal bars are widely used, especially in the fields of machining, construction, bridges and aerospace. The use of steel bars in machining is particularly obvious. During the use process, the steel bars have oxide skin due to their rough outer surface. Generally, the outer skin needs to be cut off before machining, and then processed and used. There is a common method to directly cut or grind the outer surface of the steel bar through a lathe or a grinder, but generally the operator holds the bar into the machine tool for processing, and the degree of automation is low, so the manual workload is large and the production efficiency is relatively high. low.

For example, Chinese utility model patent document CN205684812U discloses a bar peeling machine, which, by arranging a cutting mechanism and a grinding mechanism on a worktable, simultaneously performs cutting processing and grinding on the bar held by the bar clamp on the base. The steel bar with higher surface smoothness can be obtained to meet the subsequent higher processing requirements. However, when the equipment is in use, the operator still clamps the bars one by one, and then manually cuts or grinds them. The final processed bars are also manually removed, that is, the loading, feeding, processing and lowering of the bars. All materials require manual operation, which inevitably reduces production efficiency.

In some special fields, such as washing machines, the rotating shaft of the washing machine is an important part that supports the drum, transmits power, and completes the laundry function. In addition, it is necessary to rotate forward and reverse, bear alternating torque, and ensure the rotation accuracy to reduce noise and achieve the required fatigue limit. Therefore, such parts have high requirements for dimensional accuracy, geometric accuracy, and fatigue strength. This type of shaft often needs cold extrusion treatment before processing. In order to ensure the quality of cold extrusion, it is necessary to have lubricant on the surface of the bar blank, which requires the surface of the bar blank to be smooth and clean. Therefore, the oxide skin layer on the surface of the bar needs to be removed. . As far as the inventors know, the bar blank of the rotating shaft of the washing machine is basically still cut or ground by the aforementioned machine tool without special grinding equipment. Existing grinding equipment specially designed for washing machines is also carried out on the finished washing machine shaft. For example, a grinding device for a washing machine rotating shaft disclosed in Publication No. CN108081042A is used for grinding the rotating shaft of the washing machine before installation. Even if the finished shaft is ground, and only to improve the uniformity of the grinding, it still requires manual operation.

To sum up, it can be seen that at present, for the removal of the skin from the bar, especially the removal of the oxide skin from the bar blank of the washing machine shaft, in the grinding process, the whole process of loading, feeding, processing and unloading requires manual operation, and the degree of automation is low. The production efficiency is relatively low and needs to be solved urgently.

In addition, when the bar is ground with abrasive belt, the problem of belt deviation often occurs.

Utility model content

The utility model provides a bar grinder, which aims to solve the problem that manual operation is required in the whole process of feeding, feeding, processing and unloading in the existing bar grinding process, the degree of automation is low, and the production efficiency is relatively low The problem.

The utility model also provides the application of the bar dermabrasion machine in grinding and removing the epidermis of the rotary shaft blank of the washing machine, and provides a method of using the bar dermabrasion machine to grind and remove the epidermis from the washing machine rotary shaft blank.

In order to solve the problem of low production efficiency of bar grinding, the utility model adopts a bar grinding machine, which includes a feeding device, a material conveying device, a surface grinding device and a blanking device installed on the frame; The feeding device is arranged at the feeding end of the material conveying device, which is used to feed the bars to be processed into the material conveying device one by one; the surface grinding device is located at one of the feeding directions of the material conveying device. On the side, grind the bar material to be processed which is conveyed by the material conveying device to the processing position; the unloading device is arranged at the feeding end of the material conveying device, and is used to remove the bar material after grinding. The material conveying device. Through the organic combination of the feeding device, the material conveying device, the surface grinding device and the unloading device, the whole process of feeding, feeding, processing and unloading can be automated in the bar grinding process without manual intervention, effectively improving the Productivity.

As a structural form of the feeding device in the above solution, it includes a feeding platform with a flat upper surface installed on the frame, a storage box located above the feeding platform, and a storage box and the feeding platform. The material storage box has a storage cavity with a width that can accommodate the length of a single bar, and the bottom of the storage box has a blanking port for a single bar to fall out; The storage box is located near the blanking port of the storage box, and can be reciprocated along the feeding direction by the pusher driving member, so that the end of the reclaiming push plate close to the blanking port opens or closes the blanking port; When moving in the reverse direction of the feeding direction, the blanking port is opened, and a bar material falls on the plane of the feeding platform. When the reclaiming push plate moves to the feeding direction, the A bar on the plane of the feeding platform is pushed out to complete the feeding. Therefore, the storage box can store multiple bars at one time, and cooperate with the reciprocating movement of the reclaiming push plate, so that the bars are taken out from the storage box one by one, and pushed into the material conveying device to realize automatic feeding.

With the above-mentioned structure of the feeding device, the pushing element can be a cylinder, an oil cylinder, a linear motor, or other materials that can realize the linear reciprocating movement of the reclaiming push plate. Of course, considering the ease of implementation and cost, the pusher drive is given priority to the cylinder.

As a further optimization of the above scheme, the bottom of the storage box can be designed as an inclined surface, that is, it has a sloping plate to form a slope for the bar material to roll off. The inner bar material can be smoothly dropped from the blanking port, and there will be no omission.

In order to feed the bar material accurately, a reclaiming slot corresponding to the blanking opening that can accommodate a single bar can be opened at the end of the reclaiming push plate close to the blanking opening, and the reclaiming slot on the reclaiming push plate faces toward the blanking opening. One side in the feeding direction is open, and the opposite side in the feeding direction has a pushing baffle for blocking the bar material. In this way, the bar material is limited by the reclaiming slot, so that the feeding position is the same every time, and the accuracy of feeding is ensured.

With the above-mentioned feeding device structure, a roller can be installed on the reclaiming push plate, and the roller can be movably supported on the plane of the feeding platform, so as to avoid the direct contact sliding friction between the reclaiming push plate and the plane of the feeding platform; The roller is installed on the inner side wall of the roller installation slot opened at the bottom of the pushing baffle, so that the roller is relatively concealed, the gap between the reclaiming push plate and the feeding platform is small, and the whole is compact.

As a structural form of the material conveying device in the above scheme, it includes a support beam installed on the frame, a chain transmission mechanism on the support beam, and a grinding station located on one side of the chain transmission mechanism in the feeding direction. At least one guide wheel mechanism; above the chain transmission mechanism on the guiding side of each guide wheel mechanism is provided with a pinch wheel whose rotation axis is parallel to the feeding direction; when the guide wheel mechanism works, the rotation direction is in the direction of the pinch wheel The side view is from bottom to top. With this scheme, through the cooperation of the chain drive mechanism, the guide wheel mechanism and the pressure roller, the chain drive mechanism can automatically feed the bar material to the grinding device, and the guide wheel mechanism drives the bar material to rotate and hang in the air when it is fed to the grinding station. For grinding of abrasive tools, the pressure wheel is suspended for the bar to complete the grinding, so that there is no need to manually hold the bar for grinding, saving labor.

In the above-mentioned material conveying device structure, the chain drive mechanism is provided with side guide plates symmetrically on both sides of the feeding direction, so that a feeding space is formed between the side guide plates on both sides and the guide wheel mechanism, and the chain drive mechanism on both sides of the chain drive mechanism where the guide wheel mechanism is located Processing vacancies remain. As a better option, the upper parts of the side guides on both sides of the chain drive mechanism extend outward, and a V-shaped flare is formed between them. In this way, the accuracy and stability of the bar material conveying on the chain drive mechanism can be effectively ensured, the material falling off is avoided, and the grinding is not affected.

In general, a support beam can be supported and mounted to a frame by means of a plurality of brackets arranged along its length.

In the above-mentioned structure of the material conveying device, in the usual way, the chain transmission mechanism includes two sprockets installed at both ends of the support beam through a wheel frame, and a chain installed between the two sprockets to realize chain transmission. Feeding structure. The guide wheel mechanism may include a guide wheel mounted on the guide wheel frame and close to the side of the chain transmission mechanism, and the guide wheel is driven by a guide wheel motor. And when there are no less than two guide pulley mechanisms, between the guide pulleys of adjacent guide pulley mechanisms, and between the guide pulleys of the first and last guide pulley mechanisms, one of the guide pulley mechanisms and the guide pulley motor may pass through a universal coupling. Drive connection, so that one power source can realize synchronous rotation among multiple guide wheel mechanisms.

On the basis of the above guide wheel mechanism structure, preferably the projection of the rotation axis of the guide wheel in the feeding plane is getting closer and closer to the chain transmission mechanism along the feeding direction, and has an included angle α with the feeding direction; The projection of the rotation axis in the plane perpendicular to the feeding is farther and farther away from the chain transmission mechanism along the feeding direction, and has an included angle β with the feeding direction. With the guide wheel being arranged in this way, there are horizontal and vertical component forces, which can not only guide the bar material to enter the grinding station well, but also enable the guide wheel to drive the bar material for suspension grinding.

On the basis of the above guide wheel mechanism structure, preferably the guide wheel frame is installed on the linear guide rail, and can be adjusted along the vertical feeding direction through the guide wheel adjusting screw, so as to adjust the distance between the guide wheel and the chain transmission mechanism, and adjust the guide and compression of the bar. quantity, and adapt to different diameter bar guide.

As a structural form of the surface grinding device, it includes a box frame mounted on the frame, a pair of grinding wheels located on the box frame and a grinding power assembly for supplying power to one of the grinding wheels, and a set of The abrasive belt between the pair of grinding wheels; the other grinding wheel in the pair of grinding wheels is installed on the adjusting shaft, and it is characterized in that it also includes a grinding adjusting mechanism; it is fixed on the box frame The support shaft vertically penetrates into the shaft hole provided on the adjustment shaft; the grinding adjustment mechanism can drive the adjustment shaft to rotate with the support shaft as a fulcrum.

As an implementation structure of the grinding adjustment mechanism in the above-mentioned surface grinding device, it includes a straightening pressure block with a pressure groove, the straightening pressure block is fixed on the box frame, and the adjustment shaft is kept away from the grinding wheel. One end is pressed into the pressure groove; the pressure groove of the correction pressure block is provided with a screw hole on the opposite two side walls, each screw hole is screwed into an adjustment screw, and the adjustment screw is placed on the side of the adjustment shaft to adjust the adjustment The screw can rotate the adjustment shaft. This is a relatively simple and cost-effective way to realize the function of the grinding adjustment mechanism. Of course, other methods can also be used. For example, the end of the adjustment shaft is set in a circular arc chute, and the rotation is realized by driving by a cylinder or an oil cylinder. Or fix at different positions of the arc chute by bolts.

As a further improvement of the above scheme, the adjusting shaft, the supporting shaft and the grinding adjusting mechanism are all installed on the grinding adjusting guide rail first, and the grinding adjusting guide rail is then fixed on the box frame. And the grinding adjustment guide rail can be driven by a lead screw nut, a tension adjustment cylinder or a linear motor. With this structure, the distance between a pair of grinding wheels can be adjusted to facilitate the installation of the abrasive belt and the adjustment of the tightness of the abrasive belt. The grinding adjustment guide rail is preferably driven by a tightness adjusting cylinder, and the tightness adjusting cylinder can be an air cylinder or an oil cylinder.

As an implementation structure of the grinding power assembly in the above scheme, it includes a grinding motor and a grinding wheel seat installed on a box frame, and a grinding wheel shaft is installed in the grinding wheel seat through a bearing; the grinding wheel shaft extends from both ends of the grinding wheel seat, and one end is installed One grinding wheel is connected to the grinding motor at the other end, so that the power of the grinding motor is transmitted to the grinding wheel, and the abrasive belt is driven for grinding.

As a preferred mode of transmission connection between the grinding motor and the grinding wheel shaft, a pulley is installed at the other end of the grinding wheel shaft, and the pulley is connected with the wheel on the output shaft of the grinding motor through a belt drive.

As a preferred way of arranging the grinding motor, the grinding motor is installed on an inclined surface of the box frame, so that the self-weight of the grinding motor has the component force of tightening the belt, so that the belt is not easy to loosen during operation and ensures the stability of the transmission. .

As a structural form of the blanking device, it includes a drive cylinder and a guide rod installed on a fixed seat, and a sliding seat slidably installed on the guide rod; the telescopic direction of the drive cylinder is parallel to the guide of the guide rod , the driving cylinder is drivingly connected to the sliding seat; a reclaiming shaft is rotatably installed on the sliding seat, and the rotation axis of the reclaiming shaft is perpendicular to the guide of the guide rod; one end of the reclaiming shaft is installed with a reclaiming material The other end is equipped with a reclaiming drive; when the reclaimer does not take the bar, the reclaimer can make the reclaimer align the end of the bar to be taken; when the reclaimer takes the bar When feeding, the reclaiming shaft can be rotated to make the bar stand up. With this structure, when the bar grinding is completed and sent to the tail of the material conveying device, the end of the bar can be grabbed by the reclaimer, and the driving cylinder drives the bar away from the conveying device, and then the reclaiming drive Stand up the bar, directly receive it or put it in the next station to prepare for the next operation and complete the reclaiming process. The device has a relatively simple structure, and can complete the complete automation of the entire reclaiming process without manual intervention, thereby effectively improving production efficiency.

In the above-mentioned unloading device structure, the reclaiming drive can use a motor to drive the reclaiming shaft to rotate electrically; a counterweight can also be used, and when the reclaimer does not take out the bar material, the self-weight of the counterweight can make the reclaimer rotate. The reclaiming part is aligned with the end of the bar to be taken; when the reclaiming part takes the bar, the reclaiming shaft is forced to rotate under the action of gravity, so that the bar stands up, so as to pass the front and rear of the reclaiming. The gravity difference forces the reclaiming shaft to rotate to complete the taking and discharging; of course, other methods can also be used. Preferably, the reclaiming drive adopts a counterweight, which does not require additional power.

When the reclaimer adopts a counterweight, one end of the counterweight can be provided with a sleeve section that is sleeved on the reclaiming shaft, and the other end is the counterweight end; and the counterweight end of the counterweight is equipped with a roller, and the axis of the roller is parallel to the axis of the counterweight. Describe the axis of the take-up shaft. A limit guide plate is installed on the sliding seat corresponding to the moving direction of the roller. The upper surface of the limit guide plate has a track surface for the roller to roll. Ramp section and high linear guide section. Through the limiting action of the limit guide plate and the telescopic action of the drive cylinder, when the bar material leaves the material conveying device, the bar material is pulled out in the axial direction, and then slowly rotates, and finally the bar material stands up. The movement of the material is relatively stable, and there will be no vibration, preventing the bar material from falling from the reclaiming part.

In the above-mentioned unloading device structure, the material reclaiming member may adopt an electromagnet, a suction cup, a manipulator, or other structures capable of grasping the bar material. It is preferable to use electromagnets for the reclaiming parts, which can be grasped by adsorbing the end face of the bar, and the control is simple.

In the above-mentioned feeding device structure, the driving cylinder is an air cylinder, a hydraulic cylinder, a linear motor, or other components that can realize linear motion. It is preferable to use an air cylinder as the driving cylinder, which is simple and easy to implement.

As a preferred solution, the above-mentioned guide rods have a pair, which are arranged below the driving cylinder, and can stably guide and support the sliding seat.

The bar grinder of the above scheme is suitable for application in the grinding process of the rotating shaft of the washing machine, and is used for grinding and removing the surface oxide scale of the blank of the rotating shaft of the washing machine.

Description of drawings

Fig. 1 is the overall structure view of the utility model bar grinder viewed from the discharge side;

Fig. 2 is the overall structure view of the utility model bar grinder after removing the cover and showing the interior from the discharge side;

Fig. 3 is a partial enlarged view of A in Fig. 2;

4 is a perspective view of the feeding device in the bar grinder of the present invention;

Fig. 5 is the front sectional view of the feeding device in Fig. 4;

FIG. 6 is a view of the matching structure of the reclaiming push plate and the pushing drive member in the feeding device shown in FIG. 4;

7 is a three-dimensional structural view of the material conveying device of the bar grinder of the utility model viewed from one side;

Fig. 8 is a partial enlarged view of the material conveying device shown in Fig. 7;

Fig. 9 is a side view of the guide wheel mechanism in the material conveying device shown in Fig. 7;

Figure 10 is a top view of the guide wheel mechanism shown in Figure 9;

Figure 11 is a left side view of the guide wheel mechanism shown in Figure 9;

Figure 12 is a side view of the surface grinding device in the bar grinder of the present invention;

Figure 13 is a front view of the surface grinding device shown in Figure 12;

Figure 14 is a top view of the surface grinding device shown in Figure 12;

Figure 15 is a side view of the unloading device in the bar grinder of the present invention;

Figure 16 is a state view of the initial position of the reclaiming material when the feeding device shown in Figure 15 is working;

Fig. 17 is a state view of the end position of reclaiming when the unloading device shown in Fig. 15 is working.

The symbols in the accompanying drawings are respectively indicated as:

100. Rack;

200, feeding device; 210, feeding platform; 220, storage box; 221, blanking port; 222, inclined plate; 230, reclaiming push plate; 231, reclaiming chute; 232, pushing baffle plate; 233 , roller; 240, pusher driving part;

300, material conveying device; 310, support beam; 320, chain transmission mechanism; 321, sprocket; 322, wheel frame; 323, chain; 324, side guide plate; 330, guide wheel mechanism; 331, guide wheel frame; 332, Guide wheel; 333, linear guide rail; 334, guide wheel adjustment screw; 340, bracket; 350, transmission gear; 360, pressure wheel;

400, surface grinding device; 410, box frame; 420, grinding wheel; 430, abrasive belt; 440, grinding power assembly; 441, grinding motor; 442, pulley; 443, belt; 444, grinding wheel seat; 450, grinding adjustment mechanism; 451, grinding adjustment guide rail; 452, adjustment shaft; 453, support shaft; 454, correction pressure block; 455, adjustment screw; 456, tightness adjustment cylinder; 460, grinding amount adjustment guide rail; 470, Grinding amount adjusting screw;

500, feeding device; 510, fixing seat; 520, driving cylinder; 530, guide rod; 540, reclaiming shaft; 550, counterweight; 560, mounting plate; 570, reclaiming part; 580, limit guide plate; 581, low linear guide section; 582, slope section; 583, high linear guide section; 590, sliding seat;

600, cover.

Detailed ways

The present utility model will be further described below with reference to specific embodiments.

As shown in FIG. 1 , the overall structure of a bar grinder is similar to that of an ordinary machine tool. The frame 100 is used as the support base. The corresponding working part is installed on the frame 100, and the working part is covered by the cover 600. Therefore, a relatively closed processing space can be formed in the casing 600 to reduce noise, reduce pollution and improve production safety; at the same time, the casing 600 has an openable door facing the operation side for convenient operation.

The working part of the bar grinder of this scheme is mainly composed of four parts: the feeding device 200 , the material conveying device 300 , the surface grinding device 400 and the unloading device 500 , which are installed on the frame 100 . Wherein, the feeding device 200 is arranged at the feeding end of the material conveying device 300, and is used for feeding the bars to be processed into the material conveying device 300 one by one; The processing station is used to grind the bar to be processed which is transported to the processing station by the material conveying device 300; Material conveying device 300. 2 is a view showing the working part after removing the cover 600, and the arrangement of the working part can be clearly seen, so that through the organic combination of the feeding device 200, the material conveying device 300, the surface grinding device 400 and the unloading device 500, During the bar grinding process, the whole process of loading, feeding, processing and unloading can be automated without manual intervention, which effectively improves production efficiency.

This equipment is suitable for automatic grinding of all bars, especially for metal bars. Of course, it is also mainly designed for pre-processing the surface of metal bar blanks before cutting, such as removing surface oxide scale. This embodiment mainly describes the application of the equipment in the grinding process of the rotating shaft of the washing machine, which is used for grinding and removing the oxide scale on the surface of the blank bar of the rotating shaft of the washing machine. The working part is described in detail below in combination with the specific structure of each part and the use method in the work.

As shown in FIG. 4 and FIG. 5 , a structural form of the feeding device 200 in this embodiment is shown. It has a box structure, and is mainly composed of a feeding platform 210, a storage box 220, a reclaiming push plate 230 and a pusher. The material driving part 240 is composed. The feeding device 200 is supported and installed on the frame 100 by the feeding platform 210 , and the upper surface of the feeding platform 210 has a flat surface for pushing out the bar material into the feeding conveying device 300 . The storage box 220 is arranged above the feeding platform 210, and has a storage cavity with a width that can accommodate the length of a single bar, and has a blanking port 221 at the bottom for a single bar to fall out, and the blanking port 221 is close to The feed end of the material conveying device 300 can be dropped onto the material conveying device 300 after being pushed out from the blanking port 221 . The reclaiming push plate 230 is arranged between the storage box 220 and the feeding platform 210, and is located near the blanking port 221 of the storage box 220, and is connected to the pushing driving member 240. The material direction reciprocates, so that one end of the reclaiming push plate 230 close to the material blanking port 221 opens or closes the blanking port 221 . When the reclaiming push plate 230 moves in the reverse direction of the feeding direction, the blanking port 221 is opened, and a bar material falls on the plane of the feeding platform 210. When the reclaiming push plate 230 moves in the feeding direction, the The push plate 230 pushes out a bar falling on the plane of the feeding platform 210, and sends it into the material conveying device 300 to complete the feeding.

In order to make the bar material fall from the storage box 220 more smoothly, in this embodiment, an inclined plate 222 is designed at the bottom of the storage box 220 to form a slope for the bar material to roll off. It can be ensured that the bars in the storage box 220 can smoothly fall out from the blanking port under the action of their own weight, and can all fall out without omission.

When the bar material falls from the blanking port 221 to the plane of the feeding platform 210, it may be offset, resulting in an inaccurate position. Correspondingly, the reclaiming chute 231 that can accommodate a single bar material, the reclaiming chute 231 on the reclaiming push plate 230 is open to one side of the feeding direction, and the opposite side of the feeding direction has a pushing baffle plate 232 that blocks the bar material, The bar material is restricted by the reclaiming groove 231, so that the feeding position is the same every time, so as to ensure the accuracy of feeding. As shown in FIG. 6 , a structural view of the pusher driver 240 connected to the reclaimer pusher 230 is given, the pusher driver 240 is connected to the rear end of the reclaimer pusher 230 , and the front end of the reclaimer pusher 230 is used as the pusher end , and open the reclaiming chute 231.

In order to reduce the movement resistance of the reclaiming push plate 230, the bottom of the reclaiming push plate 230 is provided with a roller installation groove, and the inner side wall of the roller installation groove is installed with a roller 233, so that the material reclaiming push plate 230 can be rolled and supported on the feeding platform through the roller 233. On the plane of 210, the friction between the reclaiming push plate 230 and the feeding platform 210 is reduced, and the roller 233 is relatively concealed, the gap between the reclaiming push plate 230 and the feeding platform 210 is small, and the whole is compact.

In the feeding device 200, the material pushing driving member 240 is used as the power element of the material reclaiming push plate 230, and can use an air cylinder, an oil cylinder, a linear motor, or other structures in the prior art that can provide linear reciprocating power. In this embodiment, considering the issues of ease of implementation and cost, the pushing element 240 selects an air cylinder.

When the above-mentioned feeding device 200 is used for the grinding and feeding operation of the rotating shaft blank of the washing machine, a certain amount of rotating shaft bar blanks are stored in the storage box 220; 230 is closed; when feeding, the pushing drive 240 drives the reclaiming push plate 230 to move in the reverse direction of the feeding, that is, the right side shown in FIG. 221 is aligned, a rotating shaft bar blank falls into the reclaiming chute 231; then, the pusher 240 drives the reclaiming push plate 230 to move in the feeding direction, pushes out the bar in the reclaiming chute 231, and feeds the material The conveying device 300 completes the feeding; at the same time, the feeding push plate 230 closes the blanking port 221 to prevent the bar material from falling down and prepare for the next feeding. After the grinding of the previous bar is completed, the feeding device 200 repeats the above steps again, and then feeds a bar into the material conveying device 300, and so on, intermittently and continuously feeding. Of course, a sensor can be set at the position of the blanking port 221 to detect the feeding state for reliable control.

As shown in FIG. 7 and FIG. 8 , a structural form of the material conveying device 300 in this embodiment is shown, and the bar material is conveyed in the form of a chain drive structure. Specifically, it includes a chain drive installed on the support beam 310 The mechanism 320 is at least one guide wheel mechanism 330 located at the grinding station on one side of the chain transmission mechanism 320 in the feeding direction. Generally speaking, the support beam 310 is supported and installed by a plurality of brackets 340 arranged along the length direction thereof, thereby being fixed to the rack 100 . The number of the guide wheel mechanisms 330 is matched with the surface grinding devices 400 . For example, two surface grinding devices 400 may be provided for rough grinding and fine grinding, respectively, and then there are two corresponding guide wheel mechanisms 330 .

The chain drive mechanism 320 is provided with side guide plates 324 symmetrically on both sides in the feeding direction, so that a feeding space is formed between the side guide plates 324 on both sides and the guide wheel mechanism 330, and the chain drive mechanism 320 where the guide wheel mechanism 330 is located is left on both sides of the chain drive mechanism 320. Machining vacancies so that the bar has room for grinding when it reaches this position. As a better option, the upper parts of the side guide plates 324 on both sides of the chain transmission mechanism 320 extend outward, forming a V-shaped flared opening therebetween. In this way, the accuracy and stability of the conveying of the bar material on the chain transmission mechanism 320 can be effectively ensured, the material falling is avoided, and the grinding is not affected.

The chain transmission mechanism 320 can adopt the existing conventional manner, for example, it includes two sprockets 321 installed at both ends of the support beam 310 through the wheel frame 322, and a chain 323 installed between the two sprockets 321, so as to realize the chain transmission mechanism 320. Transmission feeding structure. The sprocket 321 is driven to rotate by a motor.

In this solution, the role of the guide wheel mechanism 330 is very important, and it is the key to realize automatic grinding. It mainly plays the role of guiding and pressing the bar material to make the bar material hang in the air. Here, the guide wheel mechanism 330 includes a guide wheel 332 installed on the guide wheel frame 331 and close to the side of the chain transmission mechanism 320, and the guide wheel 332 is driven by a guide wheel motor. And when there are no less than two guide wheel mechanisms 330, between the guide wheels 332 of the adjacent guide wheel mechanisms 330, and one of the guide wheels 332 of the two guide wheel mechanisms 330 at the beginning and the end may pass through the guide wheel motor. The universal coupling is connected in a transmission, so that one power source can realize synchronous rotation among the plurality of guide wheel mechanisms 330 . As shown in FIG. 8 , the power source of the guide wheel mechanism 330 is a motor, and the power is transmitted to the transmission gear 350 through the chain drive, and the transmission gear 350 is connected to the coupling. Here, the coupling adopts a universal coupling, which can adapt to the power transmission when each part has different shafts, and can meet the individual adjustment of the pressing amount of each guide wheel mechanism 330 .

3 and 8, above the chain transmission mechanism 320 on the leading side of each guide wheel mechanism 330 is provided with a pinch roller 360 whose rotation axis is parallel to the feeding direction. The side view is from bottom to top, that is, the clockwise direction viewed from the direction shown in the figure. The guide wheel mechanism 330 can limit the vertical position of the bar during the suspension grinding process to prevent the bar from flying out. It can be seen that the triangular grinding space is formed by the action of the guide wheel mechanism 330, the pressing wheel 360 and the surface grinding device 400, and the bar material is well restricted for grinding.

Figure 9, Figure 10 and Figure 11 show the structure of the guide wheel mechanism 330 in this embodiment. In order to make the guide wheel mechanism 330 have better guidance and the effect of suspending the bar material, the rotation axis of the guide wheel 332 is in the feeding plane. The projection is getting closer and closer to the chain transmission mechanism 320 along the feeding direction, and has an included angle α with the feeding direction, and the projection of the rotation axis of the guide wheel 332 in the direction perpendicular to the feeding plane is getting farther and farther away from the chain transmission mechanism 320 along the feeding direction, And has an included angle β with the feeding direction. With the guide wheel 332 being arranged in this way, there are horizontal and vertical components, which can not only guide the bar material well into the grinding station, but also enable the guide wheel 332 to drive the bar material to be ground in the air. It is relatively appropriate to select the included angle α and included angle β within the range of 1° to 5°, so as to meet the guiding and suspension requirements on the premise of ensuring the stability of the bar.

In order to satisfy the grinding of different diameters and the adjustment of the pressing amount, the guide wheel frame 331 in the guide wheel mechanism 330 is installed on the linear guide rail 333, and can be adjusted along the vertical feeding direction by the guide wheel adjusting screw 334, so as to adjust the guide wheel The distance of 332 relative to the chain transmission mechanism, adjust the amount of bar guide pressing, and adapt to the guide of bars of different diameters.

When the above-mentioned material conveying device 300 is used for the grinding and feeding operation of the rotating shaft blank of the washing machine, the rotating shaft blank bar on the chain 323 of the material conveying device 300 from the feeding device 200 is fed forward under the driving of the chain 323; The bar material reaches the grinding station, that is, where the guide wheel mechanism 330 is located. The guide wheel 332 guides the bar material into between the guide wheel 332 and the abrasive belt 430 of the surface grinding device 400, and the guide wheel 332 has an upward direction to the bar material. The force causes the bar to suspend, and the upper side of the bar contacts the pressure roller 360 to limit the position. The pressure roller 360 rotates with the bar, and the surface grinding device 400 grinds the bar; the bar after grinding, It falls onto the chain 323, continues to be conveyed forward, enters the next step of grinding, or is sent to the end of the material conveying device 300, and waits for unloading.

The surface grinding device 400 uses the existing abrasive belt 430 grinding structure to grind the surface of the bar, but uses the abrasive belt 430 for grinding. The key to the quality of the bar is the stability of the operation of the abrasive belt 430. Therefore, in this embodiment, the surface grinding device 400 is optimally designed. As shown in FIG. 12 , FIG. 13 and FIG. 14 , a structural form of the surface grinding device 400 in this embodiment is shown, which includes a box frame 410 installed on the frame 100 , and a For the grinding wheels 420 , a grinding power assembly 440 for providing power for one of the grinding wheels 420 , an abrasive belt 430 sleeved between the pair of grinding wheels 420 , and a grinding adjustment mechanism 450 . Among them, the other grinding wheel 420 of the pair of grinding wheels 420 is installed on the adjustment shaft 452; the support shaft 453 fixed on the box frame 410 vertically penetrates into the shaft hole provided on the adjustment shaft 452; the grinding adjustment mechanism 450 can drive the adjustment shaft 452 to rotate with the support shaft 453 as a fulcrum. With this solution, the grinding adjustment mechanism 450 drives the support shaft 453 to rotate, so as to adjust the angle between the rotating shafts between the pair of grinding wheels 420 according to the deviation of the abrasive belt 430, so as to eliminate the deviation of the abrasive belt 430 and ensure The stability of the abrasive belt 430 work. The grinding end of the abrasive belt 430 in the surface grinding device 400 is aligned with the machining vacant position of the upper guide plate 324 of the material conveying device 300 , and is disposed on both sides of the chain transmission mechanism 320 opposite to the guide wheel mechanism 330 .

Here, as an implementation structure of the grinding adjustment mechanism 450, it includes a straightening pressure block 454 with a pressure groove, the straightening pressure block 454 is fixed on the box frame 410, and the end of the adjusting shaft 452 is away from the grinding wheel 420 Pressed into the pressure groove; the pressure groove of the correction pressure block 454 is provided with a screw hole on the opposite two side walls, each screw hole is screwed into the adjustment screw 455, the adjustment screw 455 is on the side of the adjustment shaft 452, and the adjustment screw 455 can be adjusted. The adjustment shaft 452 is rotated, so as to slightly adjust the angle between the rotation shafts of the two grinding wheels 420 , and make corrections according to the deviation of the abrasive belt 430 to ensure the stability of the operation of the abrasive belt 430 . This is a relatively simple and cost-effective way to realize the function of the grinding adjustment mechanism 450. Of course, other methods can also be used. For example, the end of the adjustment shaft 452 is arranged in a circular arc chute, and the realization is realized by the driving of the air cylinder or the oil cylinder. Rotation, or fixation at different positions of the arc chute by bolts.

At the same time, the adjusting shaft 452, the supporting shaft 453 and the grinding adjusting mechanism 450 are all first installed on the grinding adjusting guide rail 451, the grinding adjusting guide rail 451 is then fixed on the box frame 410, and the grinding adjusting guide rail 451 can pass the lead screw nut , The tightness adjustment cylinder 456 or the linear motor drive. With this structure, the distance between a pair of grinding wheels 420 can be adjusted, which facilitates the installation of the abrasive belt 430 and the adjustment of the looseness 430 of the abrasive belt. The grinding adjustment guide rail 451 is preferably driven by a tightness adjusting cylinder 456. The tightness adjusting cylinder 456 can be an air cylinder or an oil cylinder, preferably an air cylinder, which is simple to implement and more suitable for machine tools.

As an implementation structure of the above-mentioned grinding power assembly 440, it includes a grinding motor 441 and a grinding wheel seat 444 installed on the box frame 410. The grinding wheel seat 444 is installed with a grinding wheel shaft through a bearing; the grinding wheel shaft extends from both ends of the grinding wheel seat 444. , one end of which is installed with a grinding wheel 420, and the other end is connected to the grinding motor 441 in a driving manner, so that the power of the grinding motor 441 is transmitted to the grinding wheel 420, and the abrasive belt 430 is driven for grinding. As a preferred way of driving connection between the grinding motor 441 and the grinding wheel shaft, the other end of the grinding wheel shaft is mounted with a pulley 442, and the pulley 442 is connected with the wheel on the output shaft of the grinding motor 441 through a belt 443.

As a preferred way of arranging the grinding motor 441, the grinding motor 441 is installed on an inclined surface of the box frame 410, so that the self-weight of the grinding motor 441 has a component force that tightens the belt 443, so that the belt 443 is not easy to loosen during operation , to ensure the stability of the transmission. In addition, the box frame 410 is installed on the frame 100 through the grinding amount adjusting guide rail 460, and the box frame 410 is driven to move along the grinding amount adjusting guide rail 460 by the grinding amount adjusting screw 470. The moving direction of the box rack 410 is perpendicular to the feeding direction, so that it can be Adjust the grinding amount. The adjusting screw 470 can be connected to the hand wheel outside the operation side of the equipment, which is convenient for adjusting the grinding amount.

When the above-mentioned surface grinding device 400 is used to grind the rotary shaft blank of the washing machine, the grinding motor 441 drives the grinding wheel 420 to rotate, drives the belt to move, and grinds the bar entering between the abrasive belt 430 and the guide wheel 332 processing.

The bar material that has been ground by the surface grinding device 400 needs to be taken away in time when it is sent to the tail by the material conveying device 300, and the blanking device 500 needs to be assisted to complete it. As shown in FIG. 15 , a structural form of the unloading device 500 in this embodiment is shown, which is arranged on one side of the end of the material conveying device 300 , and includes a fixed seat 510 installed on the frame 100 , which is installed on the fixed base 510 . The driving cylinder 520 and the guide rod 530 on the seat 510 , and the sliding seat 590 slidably mounted on the guide rod 530 . The telescopic direction of the driving cylinder 520 is parallel to the guide of the guide rod 530, and drives the connecting slide 590, and the guide rod 530 is guided parallel to the conveying direction of the material conveying device 300; the slide base 590 is rotatably mounted with a reclaiming shaft 540 , the rotation axis of the reclaiming shaft 540 is guided vertically by the guide rod 530; one end of the reclaiming shaft 540 close to the chain 323 of the material conveying device 300 is installed with a reclaiming member 570 through the mounting plate 560, and the other end is installed with a reclaiming driving member. When the reclaimer 570 does not take out the bar material, the reclaiming drive part can make the reclaimer 570 align the end of the bar to be taken out on the chain 323, and grab or suck the bar; when the reclaimer 570 takes the bar When feeding, the reclaiming shaft 540 can be rotated to make the bar stand up. Here, the guide rods 530 have a pair and are arranged below the drive cylinder 520 to stably guide and support the carriage 590 .

With the above solution, when the bar material is ground and sent to the end of the material conveying device 300, the end of the bar material can be grabbed by the reclaimer 570, and the driving cylinder 520 drives the bar material to leave the conveying device 300, and then the reclaimer drives the material. Under the action of the parts, the bar is erected, directly received or placed in the next station to prepare for the next operation and complete the reclaiming process.

In order to realize the rotating and reclaiming action of the reclaiming shaft 540, the reclaiming drive member can use a motor, but the electric drive of the reclaiming shaft 540 to rotate is relatively complicated. In this embodiment, the optimized design is made, and the counterweight 550 is used as the driving member for reclaiming the material, so that the required reclaiming action can be completed without additional power. The reclaiming member 570 can be aligned with the end of the bar to be taken; when the reclaiming member 570 takes the bar, the reclaiming shaft 540 is forced to rotate under the action of gravity, so that the bar stands up, so as to pass the reclaiming The difference in gravity between the front and rear forces the reclaiming shaft 540 to rotate to complete the taking and unloading.

One end of the counterweight 550 has a sleeve section sleeved on the reclaiming shaft 540 , and the other end is the counterweight end; A limit guide plate 580 is installed on the sliding seat 590 corresponding to the moving direction of the roller. The upper surface of the limit guide plate 580 has a track surface for the roller to roll. Linear guide section 581 , ramp section 582 and high-position linear guide section 583 . Through the limiting action of the limiting guide plate 580 and the telescopic action of the driving cylinder 520, when the bar material is separated from the material conveying device 300, the bar material can be pulled out in the axial direction, and then slowly rotated, and finally the bar material is erected. During the process, the movement of the bar material is relatively stable, and no vibration is generated, so as to prevent the bar material from falling from the reclaimer 570 .

Here, the reclaiming member 570 can use an electromagnet, a suction cup, a manipulator, or other structures capable of grasping the bar. Preferably, the reclaiming member 570 is an electromagnet, which can be grasped by adsorbing the end face of the bar, and the control is simple. The driving cylinder 520 is an air cylinder, a hydraulic cylinder, a linear motor, or other components that can realize linear motion. Preferably, the driving cylinder 520 is a cylinder, which is simple and easy to implement.

16 and 17 , when the above-mentioned blanking device 500 is used for the grinding and blanking operation of the rotary shaft blank of the washing machine, the bar material is sent to the end of the material conveying device 300, and under the driving action of the driving cylinder 520, the electromagnet As the reclaimer 570 approaches and contacts the bar material, the electromagnet is energized to absorb the bar material; then, the driving cylinder 520 moves in the opposite direction, and the electromagnet drives the bar material to gradually leave the material conveying device 300. Within the distance, the roller of the counterweight 550 is always in contact with the low-position linear guide section 581 of the limit guide plate 580. When the bar material just leaves the material conveying device 300, the roller of the counterweight 550 enters the slope section 582 of the limit guide plate 580, and follows As the driving cylinder 520 continues to push forward, the bar material rotates slowly and gradually stands up; when the bar material is completely upright, the roller of the counterweight 550 enters the high-position linear guide section 583 of the limit guide plate 580, thereby ensuring the bar material Stability throughout the reclaiming process; finally, the electromagnet is powered off and the bar is put down vertically to complete the unloading. Repeat the above steps to continue the blanking operation.

In summary, through the organic combination of the feeding device 200, the material conveying device 300, the surface grinding device 400 and the unloading device 500, the whole process of loading, feeding, processing and unloading can be realized in the bar grinding process. Automatic operation without manual intervention, reducing labor intensity and effectively improving production efficiency.

The present invention and its embodiments have been schematically described above, and the description is not restrictive, and what is shown in the accompanying drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it, without departing from the purpose of creation of the present invention, without creative design of the structure and embodiment similar to the technical solution, all should belong to the present invention. protected range.

Claims (9)

1. The bar material skin grinding machine comprises a surface grinding device (400) arranged on a rack (100), wherein the surface grinding device (400) is used for grinding a bar material to be processed, and is characterized by also comprising a feeding device (200), a material conveying device (300) and a discharging device (500) which are arranged on the rack (100); the feeding device (200) is arranged at the feeding end of the material conveying device (300) and is used for feeding the bars to be processed into the material conveying device (300) one by one; the surface grinding device (400) is positioned on one side of the feeding direction of the material conveying device (300) and is used for grinding the bar to be processed conveyed to the processing position by the material conveying device (300); the blanking device (500) is arranged at the feeding tail end of the material conveying device (300) and is used for taking the ground bar down from the material conveying device (300).

2. The bar peeling machine according to claim 1, wherein the feeding device (200) comprises a feeding platform (210) mounted on the frame (100) and having a plane upper surface, a storage bin (220) located above the feeding platform (210), and a material-taking pusher plate (230) located between the storage bin (220) and the feeding platform (210); the material storage box (220) is internally provided with a material storage cavity with the width capable of accommodating the length of a single bar, and the bottom of the material storage cavity is provided with a blanking port (221) for dropping out the single bar; the material taking push plate (230) is arranged near a blanking port (221) of the material storage box (220), and can move back and forth along the feeding direction under the driving of the material pushing driving piece (240), so that one end, close to the blanking port (221), of the material taking push plate (230) opens or closes the blanking port (221); when the material taking push plate (230) moves in the reverse direction of the feeding direction, the blanking port (221) is opened, a bar material falls on the plane of the feeding platform (210), and when the material taking push plate (230) moves in the feeding direction, the material taking push plate (230) pushes out the bar material falling on the plane of the feeding platform (210) to finish feeding.

3. The bar peeling machine according to claim 2, characterized in that: the bottom of the storage box (220) is provided with an inclined plate (222) to form a slope for the bar stock to roll down, and the blanking port (221) is positioned at the lowest part of the slope; one end of the material taking push plate (230) close to the blanking port (221) is provided with a material taking groove (231) which corresponds to the blanking port (221) and can contain a single bar material; the material taking groove (231) on the material taking push plate (230) is open towards one side of the feeding direction, and the opposite side of the feeding direction is provided with a material pushing baffle plate (232) for blocking the bar stock.

4. The bar peeling machine according to claim 1, wherein the material conveying device (300) comprises a supporting beam (310) mounted on the frame (100), a chain transmission mechanism (320) on the supporting beam (310), and at least one guide wheel mechanism (330) located at a grinding station on one side of the feeding direction of the chain transmission mechanism (320); a pressing wheel (360) with a rotating shaft parallel to the feeding direction is arranged above the chain transmission mechanism (320) at one side guided by each guide wheel mechanism (330); when the guide wheel mechanism (330) works, the rotating direction is from bottom to top when viewed from the pinch roller (360) side.

5. The bar peeling machine according to claim 4, wherein: the chain transmission mechanism (320) is symmetrically provided with side guide plates (324) at two sides in the feeding direction, so that a feeding space is formed between the side guide plates (324) at two sides and the guide wheel mechanism (330), and processing gaps are reserved at two sides of the chain transmission mechanism (320) where the guide wheel mechanism (330) is located.

6. The bar grinding machine according to claim 4, characterized in that the guide wheel mechanism (330) comprises a guide wheel (332) arranged on a guide wheel frame (331) close to the side of the chain transmission mechanism (320), the guide wheel (332) is driven by a guide wheel motor, the projection of the rotating shaft of the guide wheel (332) in the feeding plane is closer to the chain transmission mechanism (320) along the feeding direction and forms an included angle α with the feeding direction, and the projection of the rotating shaft of the guide wheel (332) in the feeding plane is farther from the chain transmission mechanism (320) along the feeding direction and forms an included angle β with the feeding direction.

7. The bar peeling machine according to claim 1, characterized in that: the surface grinding device (400) comprises a box frame (410) arranged on a frame (100), a pair of grinding wheels (420) arranged on the box frame (410), a grinding power assembly (440) for providing power for one grinding wheel (420), a grinding belt (430) sleeved between the pair of grinding wheels (420), and a grinding adjusting mechanism (450); the other grinding wheel (420) of the pair of grinding wheels (420) is mounted on an adjustment shaft (452); a support shaft (453) fixed on the box frame (410) vertically penetrates into a shaft hole arranged on the adjusting shaft (452); the grinding adjusting mechanism (450) can drive the adjusting shaft (452) to rotate by taking the supporting shaft (453) as a fulcrum.

8. The bar peeling machine according to claim 7, wherein: the grinding adjustment mechanism (450) comprises a corrective compact (454) having a press groove; the correcting press block (454) is fixed on the box frame (410), and one end of the adjusting shaft (452) far away from the grinding wheel (420) is pressed in the press groove; two opposite side walls of the pressure groove of the correcting pressure block (454) are respectively provided with a screw hole, and each screw hole is screwed in an adjusting screw (455); the adjusting screw (455) is abutted against the side surface of the adjusting shaft (452), and the adjusting screw (455) is adjusted to enable the adjusting shaft (452) to rotate.

9. The bar peeling machine according to claim 1, characterized in that: the blanking device (500) comprises a driving cylinder (520) and a guide rod (530) which are arranged on a fixed seat (510), and a sliding seat (590) which is arranged on the guide rod (530) in a sliding way; the telescopic direction of the driving cylinder (520) is parallel to the guiding of the guide rod (530), and the driving cylinder (520) is in driving connection with the sliding seat (590); the sliding seat (590) is rotatably provided with a material taking shaft (540), and the rotating axis of the material taking shaft (540) is vertical to the guide of the guide rod (530); one end of the material taking shaft (540) is provided with a material taking part (570), and the other end of the material taking shaft is provided with a material taking driving part; when the material taking piece (570) does not take the bar stock, the material taking driving piece can enable the material taking piece (570) to be aligned to the end part of the bar stock to be taken; when the material taking piece (570) takes the bar stock, the material taking shaft (540) can be rotated to enable the bar stock to stand.

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