CN211465965U - Polishing device of chair for teaching - Google Patents

Abstract

The utility model discloses a grinding device for a teaching chair, which comprises: a frame; ; The support plate is located below the positioning block, two slide rails and four cylinders are provided at both ends, the slide rails are provided with sliding blocks that are slidably connected, and the opposite side of the slide blocks at both ends is provided with a grinder , the grinding discs of the grinding machine are of the same height, the piston rod of the cylinder 4 is connected with the slider, the cylinder 4 can push the sliders at both ends to slide toward each other or back on the slide rail, and the positioning grooves are located in each On the moving track of the grinding machine; the lifting component is located on the side of the frame, which can drive the support plate to rise and fall vertically; the clamping component is located on the top of the frame. Grind the four feet to ensure that the bottom of the feet is the same height to avoid the phenomenon of seat shaking.

Description

A grinding device for a teaching chair

technical field

The utility model relates to the field of seat processing equipment, in particular to a grinding device for a teaching chair.

Background technique

Teaching chairs are generally made of wood products or composite materials. The four legs of the seat and the seat itself are usually fixed with bolts. Due to the production or installation errors of the feet, the bottom of the seat is easy to be fixed after the feet are fixed. In the case of different heights, the seat is prone to a small amount of shaking during use, which affects the comfort of use. It is easy to shake during use, which reduces the comfort of subsequent use.

Utility model content

In view of this, the purpose of the present invention is to provide a grinding device for a teaching chair, so as to solve all or one of the above-mentioned defects in the background art.

Based on the above purpose, the grinding device of the teaching chair provided by the present utility model includes:

frame;

a positioning block, the upper end of which is provided with four positioning grooves distributed at the apex of a rectangle, and the lower end is provided with a pillar, and the pillar is fixed on the bottom of the frame;

The support plate is located below the positioning block, and two slide rails and four cylinders are provided at both ends. The slide rails are provided with sliding blocks that are slidably connected. The grinding discs of the grinding machine are of the same height, the piston rod of the cylinder 4 is connected with the slider, the cylinder 4 can push the sliders at both ends to slide toward each other or back on the slide rail, and the positioning grooves are respectively located in each grinding block. on the moving trajectory of the machine;

Lifting components, located on the side of the rack, can drive the support plate to rise and fall vertically;

Clamping assembly, located at the top of the frame, clamps and lifts the seat horizontally.

Optionally, the middle part of the support plate is concave downward and the lower end is provided with four cylinders 5 aligned with the positioning groove, the upper end of the piston rod of the cylinder 5 is provided with a sleeve, and the lower end of the positioning groove is provided with a guide hole. , the sleeve extends into the guide hole, the inside of the sleeve is provided with a spring 1, the top of the spring 1 is provided with a sliding rod, the sliding rod is slidably connected with the sleeve, and the top of the sliding rod is There is a groove, and a tact switch is arranged in the groove. In the unpressed state, the contact of the tact switch is higher than the upper end face of the sliding rod, and there are sliding grooves on both sides of the groove. A second spring is arranged at the bottom of the chute, and the elastic coefficient of the second spring is smaller than that of the first spring. The upper end of the second spring is provided with a connecting rod. The side of the sliding rod is provided with a warning light, the warning light is electrically connected with the light touch switch, when the light touch switch is pressed and triggered, the warning light is on, when the light touch switch is not pressed, the warning light is off, and when the cylinder five When the piston rod is extended to the maximum stroke, when the spring II is in the natural state, the height of the grinding disc of the grinding machine is the same as the height of the detection plate.

Optionally, the lifting assembly includes a motor and a fixed seat arranged on both sides of the frame, the inner ring of the bearing of the fixed seat is provided with a screw rod, one end of the screw rod is connected with the output shaft of the motor, and the support Both ends of the plate are threadedly connected with the screw rods on both sides of the frame.

Optionally, the clamping assembly includes a cylinder 1 arranged on the top of the frame, the piston rod of the cylinder 1 protrudes downward and a pressure plate is arranged at the front end, and the two ends of the top of the frame are provided with a cylinder 2, so The piston rod of the second cylinder protrudes downward and a front end is provided with a mounting plate, the lower end of the mounting plate is provided with a cylinder three, and the piston rods of the cylinder three at both ends extend horizontally toward each other or retract back, and the cylinder three The front end of the piston rod is provided with an L-shaped support rod, and the front end of the support rod is provided with a gasket.

Optionally, the upper part of the positioning groove is provided with an arc-shaped opening that expands outward.

Optionally, a support seat is provided at the close end of the mounting plates at both ends, and the support rod is slidably connected with the support seat.

Optionally, the fourth cylinder is a low-speed cylinder.

It can be seen from the above that the grinding device of the teaching chair of the present invention has the following advantages: the feet of the chair are positioned and detected through the positioning grooves, so that the feet are respectively located on the moving tracks of the grinding machines, The assembly clamps and lifts the seat horizontally, adjusts the height of the sander by lifting the assembly, and grinds the feet of the seat simultaneously with the sander with the same height of sanding blades, so that the height of the feet of the seat becomes the same. It is simple and has high grinding efficiency, which ensures that the height of the feet of the seat is consistent, and there is no shaking phenomenon during use; the height of each foot is detected by pressing the touch switch on the detection board, and when the warning lights are all on, the grinding machine At this time, the height of the grinding disc of the grinding machine is higher than the bottom of the support feet, and the height is small, and the length of grinding is reduced on the premise that the support feet can be completely ground. To avoid waste of wood, it is convenient for workers to control the height of the support plate through the lifting component; the support plate can be lifted and lowered smoothly through the rotation of the screw; Horizontal clamping of the seat; by setting an arc-shaped opening on the upper part of the positioning groove, it is convenient for workers to insert the four legs of the seat into the positioning groove, and the support rod is supported by setting a support seat on the installation plate, so as to avoid the position of the support rod. When the seat is lifted, it is bent downward to ensure that the seat is clamped horizontally; the cylinder 4 adopts a low-speed cylinder, so that the slider is slowly pushed, ensuring the low-speed movement of the grinding machine and improving the grinding effect.

Description of drawings

Fig. 1 is the structural representation of the grinding device of the teaching chair of the present invention;

Fig. 2 is the structural representation of the casing part of the utility model;

3 is a schematic view of an upper end surface of a positioning block of the present invention;

FIG. 4 is a schematic diagram of the seat support foot of the present invention inserted into the positioning groove;

5 is a schematic view of the seat of the present invention when it is clamped;

FIG. 6 is a schematic view of the seat support leg of the present invention being ground.

Among them, 1-cylinder one, 2-pressing plate, 3-frame, 4-cylinder two, 5-installation plate, 6-cylinder three, 7-support rod, 8-gasket, 9-support seat, 10-guide hole, 11-motor, 12-screw, 13-support plate, 14-fixed seat, 15-cylinder four, 16-slider, 17-slide rail, 18-grinder, 19-sleeve, 191-groove, 192 -Spring one, 193-detection plate, 194-slide bar, 195-spring two, 196-warning light, 197-chute, 198-connecting rod, 199-tact switch, 20-positioning block, 21-pillar, 22 - Positioning groove, 23- cylinder five.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

It should be noted that all expressions using "first" and "second" in the embodiments of the present utility model are for the purpose of distinguishing two entities with the same name but non-identical parameters or non-identical parameters. " is only for the convenience of expression, and should not be construed as a limitation to the embodiments of the present utility model. In addition, the direction and position terms mentioned in the present utility model, such as "up", "middle", "down", "front", " "Rear", "Left", "Right", "Inner", "Outer", "Side", etc. are only for reference to the directions and positions of the attached drawings, therefore, the terms of directions and positions used are for the purpose of explaining and understanding this document. The utility model is not intended to limit the subsequent embodiments of the present utility model, which will not be described one by one.

Based on the above purpose, a grinding device for a teaching chair is provided, comprising:

rack 3;

The positioning block 20 is provided with four positioning grooves 22 distributed at the upper end of the rectangular vertex, and the lower end is provided with a pillar 21, and the pillar 21 is fixed on the bottom of the frame 3;

The support plate 13 is located below the positioning block 20, and two slide rails 17 and four cylinders 15 are provided at both ends. The slide rails 17 are provided with slidingly connected sliders 16. A grinder 18 is provided on one side, the grinding discs of the grinder 18 are of the same height, the piston rod of the cylinder 4 15 is connected with the slider 16, and the cylinder 4 15 can push the sliders 16 at both ends on the slide rail 17 Sliding toward or away from each other, the positioning grooves 22 are respectively located on the moving track of each grinding machine 18;

The lifting component is located on the side of the frame 3, and can drive the support plate 13 to vertically lift;

Clamping assembly, located on top of frame 3, clamps and lifts the seat horizontally.

1-6, as an embodiment, in the grinding device of the teaching chair of the present invention, the four positioning grooves 22 are matched with the four legs of the seat, and the supporting plate 13 is first lowered by the lifting assembly during use. Height, insert the four legs of the seat into the positioning groove 22, if the seat can be inserted smoothly, it means that the legs of the seat are installed without deviation; There are two slide rails 17, each slide rail 17 is provided with a slider 16, and each slider 16 is provided with a grinder 18, that is, there are four grinders 18 in total, which are respectively for the four sides of the seat. After the seat is inserted, use the clamping assembly to clamp the seat horizontally and lift it up, and then use the lifting assembly to control the support plate 13 to rise, so that the sanding blade of the sander 18 is slightly higher than the height of all the legs. At the bottom, the piston rod of the control cylinder 4 15 is extended, so that the sliders 16 at both ends slide toward the feet of the seat, and the sliders 16 drive the grinder 18 to move in the direction of the feet. Grinding, the positioning groove 22 not only detects the installation of the feet of the seat, but also makes the feet of the seat located on the moving track of the grinder 18, so that the four grinders 18 can all grind them when moving toward the feet. The slider 16 The linear motion on the slide rail 17 ensures that the grinder 18 does not shake up and down when it moves horizontally. The four grinders 18 grind the four legs of the seat respectively. During the process, the clamping component clamps the seat horizontally, so the level of the bottom of the four feet after grinding is the same. The grinding device is simple to use and has high grinding efficiency. It can grind the four feet at one time to ensure that the bottoms of the feet are at the same height and avoid the phenomenon of seat shaking.

Further, the middle part of the support plate 13 is concave downward, and the lower end is provided with four cylinders 23 aligned with the positioning grooves 22. The upper end of the piston rod of the cylinder five 23 is provided with a sleeve 19, The lower end is provided with a guide hole 10, the sleeve 19 extends into the guide hole 10, the inside of the sleeve 19 is provided with a spring one 192, the top of the spring one 192 is provided with a sliding rod 194, the sliding rod 194 is slidably connected to the sleeve 19, the top of the sliding rod 194 is provided with a groove 191, and the groove 191 is provided with a tact switch 199. In the unpressed state, the contact point of the tact switch 199 is higher than the sliding On the upper end face of the rod 194, the two sides of the groove 191 are provided with chute 197, and the bottom of the chute 197 is provided with a second spring 195. The upper end of the second spring 195 is provided with a connecting rod 198, the connecting rod 198 is slidably connected with the sliding rod 194 and a detection board 193 is provided on the top, and a warning light 196 is provided on the side of the sliding rod 194, and the warning light 196 is connected with the light. The touch switch 199 is electrically connected. When the touch switch 199 is pressed and triggered, the warning light 196 lights up. When the touch switch 199 is not pressed, the warning light 196 turns off. When the piston rod of the cylinder five 23 extends to the maximum stroke , when the second spring 195 is in a natural state, the height of the grinding plate of the grinding machine 18 is the same as the height of the detection plate 193, when the clamping assembly clamps the seat horizontally and lifts it from the positioning groove 22, the supporting plate is driven by the lifting assembly 13 rises, and at the same time, the piston rod of the control cylinder 5 23 extends upward to the maximum stroke. During the rise of the support plate 13, the sleeve 19 protrudes upward from the guide hole 10, and the guide hole 10 makes the sleeve 19 move vertically. Move to prevent the sleeve 19 from shaking, which will affect the subsequent detection accuracy. After the sleeve 19 protrudes from the positioning groove 22, it moves toward the bottom of the foot of the seat. The bottom of the foot of the sled contacts, and then the second spring 195 is compressed first, the connecting rod 198 moves to the bottom of the chute 197, the distance between the detection board 193 and the top of the sliding rod 194 is reduced, and finally the detection board 193 is attached to the top of the sliding rod 194. The board 193 presses down the tact switch 199 to make the warning light 196 light up. If the warning lights 196 on the four sliding bars 194 light up at the same time, it means that the four legs of the seat are in contact with the detection board 193 at the same time and pass the detection board 193 Pressing the tact switch 199 also means that the bottoms of the four legs of the seat are at the same height and do not need to be polished. If the four warning lights 196 cannot be illuminated at the same time, it means that the heights of the bottoms of the legs of the seat are inconsistent. When the plate 13 is raised, the casing 19 whose warning light 196 has been lit continues to rise, the spring one 192 is compressed, the sliding rod 194 moves to the bottom of the casing 19, the tact switch 199 is set in the groove 191, and the detection board After 193 is in contact with the top of the slide bar 194, it does not continue to exert pressure on the tact switch 199, so as to protect the tact switch 199 , when the casing 19 with the warning light 196 not illuminated continues to rise, since the elastic coefficient of the second spring 195 is smaller than that of the first spring 192, the second spring 195 is compressed first, and the detection plate 193 first approaches the top of the sliding rod 194 , when all the warning lights 196 are on, stop the lifting of the support plate 13, while the detection plate 193 is rising and falling, the grinding machine 18 is rising and falling synchronously, and the height of the grinding sheet of the grinding machine 18 is in the natural state The height of the detection board 193 is the same. The lower the height of the bottom of the foot, the more the warning light 196 lights up first. After the last warning light 196 is turned on, the sanding plate of the sander 18 rises to the upper end of the highest foot at the bottom. The height of the grinding discs of the machine 18 is higher than the bottom of the feet, and the height is small. On the premise that the feet can be completely ground, the grinding length can be reduced and the waste of wood can be avoided. The pipe 19 is lowered to a height that does not affect the grinding, and then the grinding machine 18 is started, and at the same time, the fourth cylinder 15 is controlled to push the slider 16 to move toward the feet of the seat, so that the grinding machine 18 smoothes the feet of the seat.

Further, the lifting assembly includes a motor 11 and a fixed seat 14 arranged on both sides of the frame 3 , the inner ring of the bearing of the fixed seat 14 is provided with a screw rod 12 , and one end of the screw rod 12 is connected to the output of the motor 11 . The two ends of the support plate 13 are threadedly connected with the screw rods 12 on both sides of the frame 3. The rotation of the motor 11 drives the screw rod 12 to rotate, the support plate 13 is threadedly connected with the screw rod 12, and the screw rod 12 is rotating. , the support plate 13 is driven to rise or fall steadily.

Further, the clamping assembly includes a cylinder one 1 arranged on the top of the frame 3, the piston rod of the cylinder one 1 protrudes downward and a pressure plate 2 is provided at the front end, and both ends of the top of the frame 3 are provided with a pressure plate 2. Cylinder II 4, the piston rod of the cylinder II 4 extends downward and is provided with a mounting plate 5 at the front end, the lower end of the mounting plate 5 is provided with a cylinder III 6, and the piston rods of the cylinder III 6 at both ends extend horizontally toward each other. The front end of the piston rod of the cylinder 36 is provided with an L-shaped support rod 7, and the front end of the support rod 7 is provided with a gasket 8. When the foot of the seat is inserted into the positioning groove 22, the control The piston rod of the cylinder three 6 is extended, so that the support rod 7 is extended toward the seat. When the gasket 8 at the front end of the support rod 7 is located under the seat, stop the cylinder three 6, and then control the piston of the cylinder two 4 The rod is retracted upwards, while the piston rod of cylinder one 1 protrudes downwards, and the cylinder two 4 lifts the mounting plate 5 upward, so that the support rod 7 rises, and the gasket 8 at the front end of the support rod 7 contacts the bottom of the seat and pushes it up. From the beginning, the pressing plate 2 protruding downward presses it on the gasket 8 from the upper part of the seat, so as to realize the horizontal clamping of the seat, and the gasket 8 increases the contact area between the support rod 7 and the seat, Prevent damage to wooden seats caused by excessive force.

Further, the upper part of the positioning groove 22 is provided with an arc-shaped opening that expands outward, and the lower part of the positioning groove 22 matches the shape and size of the seat foot, which can detect whether the installation of the seat foot is qualified, and the upper part is slightly smaller. The arc-shaped opening is larger than the seat foot, which is convenient for the worker to quickly insert the seat into the positioning groove 22 .

Further, a support seat 9 is provided at the close end of the mounting plate 5 at both ends, the support rod 7 is slidably connected with the support seat 9, and the support seat 9 guides and supports the support rod 7. When the seat is lifted, the support base 9 provides a support point in the middle of the support rod 7 to prevent the support rod 7 from bending downward, so that the seat cannot be clamped horizontally.

Further, the cylinder 4 15 is a low-speed cylinder, which slowly pushes the slider 16 to move, thereby ensuring the low-speed movement of the grinding machine 18 and improving the grinding effect.

In combination with the above description, the grinding device of the teaching chair of the present invention has the following advantages: the feet of the seat are positioned and detected through the positioning grooves 22, so that the feet are respectively located on the moving trajectories of the grinding machines 18, and the clamping components The seat is clamped and lifted horizontally, the height of the grinding machine 18 is adjusted by the lifting assembly, and the feet of the seat are simultaneously ground by the grinding machine 18 with the same height of grinding discs, so that the height of the feet of the seat becomes the same. It is simple and has high grinding efficiency, which ensures that the height of the feet of the seat is consistent, and there is no shaking phenomenon during use; the height of each foot is detected by pressing the touch switch 199 on the detection plate 193, and when the warning lights 196 are all on , the grinding piece of the grinder 18 rises to the upper end of the foot that is slightly higher than the bottom. At this time, the height of the grinding piece of the grinder 18 is higher than the bottom of the foot, and the height is small, and the foot is guaranteed to be completely ground on the premise , reduce the grinding length, avoid the waste of wood, and facilitate the worker to control the height of the support plate 13 through the lifting assembly; the support plate 13 can be smoothly lifted by the rotation of the screw 12; the seat is lifted horizontally by the support rod 7, and the pressure plate 2. The seat is clamped horizontally to realize the horizontal clamping of the seat; by setting an arc-shaped opening on the upper part of the positioning groove 22, it is convenient for the worker to insert the four legs of the seat into the positioning groove 22, and through the installation plate 5 The support base 9 is arranged to support the support rod 7, so as to prevent the support rod 7 from bending downward when the seat is lifted, so as to ensure that the seat is clamped horizontally; The low-speed movement of the grinding machine 18 is ensured to improve the grinding effect.

Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is only exemplary, and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples; under the spirit of the present invention, the above embodiments Alternatively, the technical features in the different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

Additionally, to simplify illustration and discussion, and in order not to obscure the present invention, well-known power/ground connections to integrated circuit (IC) chips and other components may or may not be shown in the figures provided in the figures provided. connect. Furthermore, devices may be shown in block diagram form in order to avoid obscuring the invention, and this also takes into account the fact that the details regarding the implementation of these block diagram devices are highly dependent on the platform on which the invention will be implemented (ie, these details should be well within the understanding of those skilled in the art). Where specific details (eg, circuits) are set forth to describe exemplary embodiments of the present invention, it will be apparent to those skilled in the art that these specific details may be made without or with changes In this case, the utility model is implemented. Accordingly, these descriptions are to be considered illustrative rather than restrictive.

Although the present invention has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations to these embodiments will be apparent to those of ordinary skill in the art from the foregoing description. For example, other memory architectures (eg, dynamic RAM (DRAM)) may use the discussed embodiments.

Embodiments of the present invention are intended to cover all such alternatives, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims (7)

1. a grinding device of a teaching chair, is characterized in that, comprises: rack (3); a positioning block (20), the upper end of which is provided with four positioning grooves (22) distributed at the apex of a rectangle, and the lower end is provided with a pillar (21), and the pillar (21) is fixed on the bottom of the frame (3); The support plate (13) is located below the positioning block (20), and two slide rails (17) and four cylinders (15) are provided at both ends, and the slide rails (17) are provided with slidingly connected sliders (17). 16), a grinding machine (18) is provided on the opposite side of the sliding block (16) at both ends, the grinding sheet height of the grinding machine (18) is the same, and the piston rod of the cylinder four (15) and the sliding block are provided (16) connection, the cylinder four (15) can push the sliders (16) at both ends to slide toward or back on the slide rails (17), and the positioning grooves (22) are respectively located at the bottom of each grinding machine (18). on the moving track; The lifting component is located on the side of the frame (3), and can drive the support plate (13) to rise and fall vertically; Clamping assembly, located at the top of the frame (3), clamps and lifts the seat horizontally. 2. The grinding device for a teaching chair according to claim 1, characterized in that the middle part of the support plate (13) is concave downward and the lower end is provided with four cylinder five (23) aligned with the positioning groove (22). ), the upper end of the piston rod of the cylinder five (23) is provided with a sleeve (19), the lower end of the positioning groove (22) is provided with a guide hole (10), and the sleeve (19) extends into the guide hole In (10), a spring one (192) is arranged inside the sleeve (19), a sliding rod (194) is arranged on the top of the spring one (192), and the sliding rod (194) is connected with the sleeve (192). 19) Sliding connection, the top of the sliding rod (194) is provided with a groove (191), the groove (191) is provided with a tact switch (199), in the unpressed state, the tact switch (199) ) contact point is higher than the upper end face of the sliding rod (194), the two sides of the groove (191) are provided with sliding grooves (197), and the bottom of the sliding groove (197) is provided with a spring two (195), so The elastic coefficient of the second spring (195) is smaller than the elastic coefficient of the spring one (192). The upper end of the second spring (195) is provided with a connecting rod (198), and the connecting rod (198) slides with the sliding rod (194). connected and provided with a detection board (193) at the top, a warning light (196) is provided on the side of the sliding rod (194), the warning light (196) is electrically connected with the tact switch (199), and when the tact switch ( 199) When it is pressed and triggered, the warning light (196) lights up, when the tact switch (199) is not pressed, the warning light (196) goes out, and when the piston rod of the cylinder five (23) extends to the maximum stroke, When the second spring (195) is in a natural state, the height of the grinding disc of the grinding machine (18) is the same as the height of the detection plate (193). 3. The grinding device for a teaching chair according to claim 1, wherein the lifting assembly comprises a motor (11) and a fixing seat (14) arranged on both sides of the frame (3), the fixing seat The inner ring of the bearing (14) is provided with a screw rod (12), one end of the screw rod (12) is connected with the output shaft of the motor (11), and both ends of the support plate (13) are connected with the frame (3) The screw rods (12) on both sides are threadedly connected. 4. The grinding device for a teaching chair according to claim 1, wherein the clamping assembly comprises a cylinder one (1) arranged on the top of the frame (3), a piston of the cylinder one (1) The rod protrudes downward and the front end is provided with a pressure plate (2), the top two ends of the frame (3) are provided with a cylinder two (4), the piston rod of the cylinder two (4) is protruded downward and the front end is provided with a cylinder two (4). There is a mounting plate (5), the lower end of the mounting plate (5) is provided with three cylinders (6), the piston rods of the three cylinders (6) at both ends are horizontally extended or retracted back, the cylinder three (6) 6) The front end of the piston rod is provided with an L-shaped support rod (7), and the front end of the support rod (7) is provided with a gasket (8). 5 . The grinding device for a teaching chair according to claim 1 , wherein the upper part of the positioning groove ( 22 ) is provided with an arc-shaped opening that expands outward. 6 . 6 . The grinding device for a teaching chair according to claim 4 , wherein a support seat ( 9 ) is provided at the close end of the mounting plate ( 5 ) at both ends, and the support rod ( 7 ) and the support The seat (9) is slidably connected. 7 . The grinding device for a teaching chair according to claim 1 , wherein the cylinder four ( 15 ) is a low-speed cylinder. 8 .

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