Automatic abrasive belt feeding device

Abstract

The invention belongs to the technical field of robot grinding and polishing equipment, and particularly relates to an automatic abrasive belt feeding device which comprises a base plate, a supporting mechanism, a push plate, a motor and a transmission mechanism, the supporting mechanism and the motor are fixed to the base plate, the push plate can be installed on the supporting mechanism in a relative movement mode, and the motor is connected with the push plate through the transmission mechanism. The push plate is driven by the motor to move on the supporting mechanism in the direction away from or close to the base plate. The supporting mechanism is sleeved with a plurality of abrasive belts side by side in the moving direction of the push plate, the push plate moves between the base plate and the abrasive belts, and the abrasive belts are pushed by the push plate to move in the direction away from the supporting mechanism till the abrasive belts are sequentially away from the supporting mechanism. The motor drives the push plate to move, the abrasive belt can be automatically supplied to the abrasive belt machine, the problem that the abrasive belt cannot be replaced in the polishing and grinding process of a robot is solved, and the product machining efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of robotic grinding and polishing equipment, specifically an automatic belt feeding device. Background Technology

[0002] Currently, robotic grinding and polishing technology has been widely applied in various fields such as automotive, aviation, and aerospace. For complex curved surface parts, machining using robots equipped with belt sanders offers advantages such as high grinding efficiency and good processing consistency.

[0003] However, sanding belts, as consumables used in belt sanders, have a short lifespan and require frequent replacement. In traditional processing, changing sanding belts is mainly done manually, which cannot meet the automated requirements of robotic grinding and polishing. Summary of the Invention

[0004] To address the current problem of robots being unable to automatically replace sanding belts during belt sanding, the present invention aims to provide an automatic belt supply device to improve the efficiency of robot sanding and polishing processes.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] The present invention includes a substrate, a support mechanism, a pusher plate, a motor, and a transmission mechanism. The support mechanism and the motor are respectively fixed on the substrate. The pusher plate is movably mounted on the support mechanism. The motor is connected to the pusher plate through the transmission mechanism. The pusher plate moves on the support mechanism in a direction away from or close to the substrate, driven by the motor. Multiple sanding belts are arranged side by side on the support mechanism along the moving direction of the pusher plate. The pusher plate moves between the substrate and the sanding belts. Each sanding belt moves in a direction away from the support mechanism under the pusher plate until it sequentially detaches from the support mechanism.

[0007] The support mechanism includes a fixed support rod, a fixed rod, and a floating support rod. The fixed support rod, fixed rod, and floating support rod are all passed through by a push plate. The fixed support rod and fixed rod are respectively fixed at the upper and lower ends of the base plate. The floating support rod is located below the fixed rod and can be moved relative to the fixed rod. Each sanding belt is sleeved on the fixed support rod and the floating support rod.

[0008] A scissor lift, a spring, a guide post, and a connecting block are provided between the floating support rod and the fixed rod. The upper left and right sides of the scissor lift are respectively hinged to the fixed rod, and the lower left and right sides of the scissor lift are respectively hinged to the floating support rod. The connecting block is detachably installed at the bottom of the fixed rod. The lower end of the guide post is connected to the floating support rod, and the upper end of the guide post is inserted into the connecting block and can move relative to the connecting block. The two ends of the spring are respectively connected to the floating support rod and the fixed rod. The spring causes the floating support rod to tend to move away from the fixed rod, thereby providing tension to the sanding belt.

[0009] The spring, guide post, and connecting block are located on one side between the floating support rod and the fixed rod. The upper end of the guide post, located within the connecting block, has a limiting block. The limiting block is integral with the guide post or connected to the upper end of the guide post. The bottom of the connecting block has a mating hole for the guide post to pass through, and the size of the limiting block is larger than the size of the mating hole. The floating support rod has a connecting guide post hole and a pin hole. The lower end of the guide post is inserted into the guide post hole, and the lower end of the guide post has an insertion hole. A pin passes through the pin hole and is inserted into the insertion hole, thereby connecting the guide post and the floating support rod. The floating support rod remains parallel to the fixed rod.

[0010] A spring, a guide post, and a connecting block are provided between the floating support rod and the fixed rod. The connecting block is detachably installed at the bottom of the fixed rod. The lower end of the guide post is connected to the floating support rod, and the upper end of the guide post is inserted into the connecting block and can move relative to the connecting block. The two ends of the spring are respectively connected to the floating support rod and the fixed rod.

[0011] The connecting block is elongated, and a set of springs and guide posts are provided on each of the left and right sides between the connecting block and the floating support rod. A limiting block is provided at the upper end of the guide post within the connecting block. The limiting block is an integral structure with the guide post or connected to the upper end of the guide post. A mating hole for the guide post to pass through is provided at the bottom of the connecting block, and the size of the limiting block is larger than the size of the mating hole. Each side of the floating support rod has a guide post hole and a pin hole. The lower end of the guide post is inserted into the guide post hole, and the lower end of the guide post has an insertion hole. A pin passes through the pin hole and is inserted into the insertion hole, thereby connecting the guide post and the floating support rod. The insertion hole at the lower end of one side of the guide post is a round hole, and the insertion hole at the lower end of the guide post on the other side is a U-shaped hole. The pin inserted into the U-shaped hole can move within the U-shaped hole, thereby allowing the floating support rod to tilt relative to the fixed rod.

[0012] The lower end of the push plate is provided with a hollow floating space, through which the fixed rod and the floating support rod pass, and the floating support rod moves within the floating space.

[0013] The lower end of the push plate is slidably connected to a slider. The sliding direction of the slider relative to the push plate is the same as the moving direction of the floating support rod. The slider can be relatively moved and fitted onto the floating support rod. The slider has both the degree of freedom to move with the push plate and the degree of freedom to move with the floating support rod.

[0014] One side of the fixed support rod is fixed to the base plate, and the other side is equipped with a sensor.

[0015] The transmission mechanism includes a synchronous pulley A, a synchronous pulley B, a synchronous belt, and a lead screw. The lead screw is rotatably mounted on the base plate and threadedly connected to the push plate. The output end of the motor is connected to the synchronous pulley A, and the synchronous pulley B is connected to the lead screw. The synchronous pulley A is connected to the synchronous pulley B via the synchronous belt. The motor drives the lead screw to rotate through the synchronous pulleys A, B, and the synchronous belt. The helical pair between the lead screw and the push plate is transformed into a sliding pair on the support mechanism of the push plate.

[0016] The advantages and positive effects of this invention are as follows:

[0017] 1. This invention uses a motor-driven pusher plate to automatically supply sanding belts to the belt sander, solving the problem of not being able to replace sanding belts during robotic polishing and improving product processing efficiency.

[0018] 2. The support mechanism of the present invention is provided with a floating support rod, and the floating support rod has a tendency to move away from the fixed rod by means of a spring, so as to tension the sand belt.

[0019] 3. The floating support rod and the fixed rod of the present invention can be tilted relative to each other, so as to avoid the device from getting stuck when the force on the left and right sides of the floating support rod is uneven and tilted. Attached Figure Description

[0020] Figure 1 This is one of the overall structural schematic diagrams of the present invention;

[0021] Figure 2 This is the second schematic diagram of the overall structure of the present invention;

[0022] Figure 3 This is a schematic diagram of a connection structure between the floating support and the fixed rod of the present invention;

[0023] Figure 4 This is a schematic diagram of another connection structure between the floating strut and the fixed strut of the present invention;

[0024] Figure 5 for Figure 4 A schematic diagram of the internal structure at the connection between the two guide pillars and the floating strut;

[0025] Figure 6 This is a schematic diagram of the structure during the use of the present invention;

[0026] Wherein: 1 is the base plate, 2 is the support mechanism, 201 is the fixed support rod, 202 is the fixed rod, 203 is the floating support rod, 204 is the sensor, 205 is the scissor lift, 206 is the spring, 207 is the guide post, 208 is the connecting block, 209 is the pin hole, 210 is the guide post hole, 211 is the insertion hole, 212 is the U-shaped hole, 3 is the push plate, 301 is the slider, 4 is the motor, 401 is the synchronous pulley A, 402 is the synchronous pulley B, 403 is the synchronous belt, 404 is the lead screw, 5 is the sanding belt, and 6 is the belt sander. Detailed Implementation

[0027] The invention will now be described in further detail with reference to the accompanying drawings.

[0028] Example 1

[0029] like Figures 1-3 As shown, this embodiment includes a substrate 1, a support mechanism 2, a pusher plate 3, a motor 4, and a transmission mechanism. The support mechanism 2 and the motor 4 are respectively fixed on the substrate 1. The pusher plate 3 is movably mounted on the support mechanism 2. The motor 4 is connected to the pusher plate 3 through the transmission mechanism. The pusher plate 3 moves on the support mechanism 2 in a direction away from or close to the substrate 1, driven by the motor 4. Multiple sanding belts 5 are arranged side by side on the support mechanism 2 along the moving direction of the pusher plate 3. The pusher plate 3 moves between the substrate 1 and the sanding belts 5. Each sanding belt 5 moves in the direction of disengagement from the support mechanism 2 under the push of the pusher plate 3 until it disengages from the support mechanism 2 in sequence.

[0030] The support mechanism 2 in this embodiment includes a fixed support rod 201, a fixed rod 202, and a floating support rod 203. All three rods are passed through by a push plate 3. The fixed support rod 201 and the fixed rod 202 are fixed to the base plate 1, with the fixed support rod 201 fixed at the upper end of the base plate 1 and the fixed rod 202 fixed at the lower end. The floating support rod 203 is located below the fixed rod 202 and is movably connected to it. Each sanding belt 5 is fitted onto the fixed support rod 201 and the floating support rod 203. The floating support rod 203 moves vertically, while the push plate 3 moves horizontally.

[0031] In this embodiment, a scissor lift 205, a spring 206, a guide post 207, and a connecting block 208 are provided between the floating support rod 203 and the fixed rod 202. The left and right sides of the upper end of the scissor lift 205 are respectively hinged to the fixed rod 202, and the left and right sides of the lower end of the scissor lift 205 are respectively hinged to the floating support rod 203. The connecting block 208 is detachably installed at the bottom of the fixed rod 202, specifically on one side between the floating support rod 203 and the fixed rod 202. The lower end of the guide post 207 is connected to the floating support rod 203, and the upper end of the guide post 207 is inserted into the connecting block 208 and can move relative to the connecting block 208. In this embodiment, spring slots are provided on both the fixed rod 202 and the floating support rod 203. The two ends of the spring 206 are respectively inserted into the spring slots on the floating support rod 203 and the fixed rod 202. Alternatively, the two ends of the spring 206 can be connected to the fixed rod 202 and the floating support rod 203 respectively. The spring 206 causes the floating support rod 203 to have a tendency to move away from the fixed rod 202, thereby providing tension to the sanding belt 5.

[0032] In this embodiment, the guide post 207 is located within the connecting block 208 and has a limiting block at its upper end. The limiting block is integral with the guide post 207 or connected to the upper end of the guide post 207. The bottom of the connecting block 208 has a mating hole for the guide post 207 to pass through, and the size of the limiting block is larger than the size of the mating hole. The floating support rod 203 has a guide post hole 210 and a pin hole 209 that are connected to each other. The lower end of the guide post 207 is inserted into the guide post hole 210, and the lower end of the guide post 207 has an insertion hole 211. In this embodiment, the insertion hole 211 is a round hole. A pin passes through the pin hole 209 and is inserted into the insertion hole 211, thereby connecting the guide post 207 and the floating support rod 203. In this embodiment, the floating support rod 203 and the fixed rod 202 remain parallel. In this embodiment, the upper end of the guide post 207 is threadedly connected to the limiting block. During installation, the connecting block 208 is first removed from the fixing rod 202. The upper end of the guide post 207 is inserted into the mating hole at the bottom of the connecting block 208. Then, the limiting block is threadedly connected, and the connecting block 208 is installed on the fixing rod 202. The two ends of the spring 206 are connected to the fixing rod 202 and the floating support rod 203 respectively. The lower end of the guide post 207 is inserted into the guide post hole 210 on the floating support rod 203. The pin is inserted into the insertion hole 211 at the lower end of the guide post 207 through the pin hole 209.

[0033] In this embodiment, the lower end of the push plate 3 is provided with a hollow floating space. The fixed rod 202 and the floating support rod 203 both pass through the floating space, and the floating support rod 203 moves within the floating space. A slider 301 is slidably connected to the lower end of the push plate 3. The sliding direction of the slider 301 relative to the push plate 3 is the same as the moving direction of the floating support rod 203. The slider 301 can be relatively movable and fitted onto the floating support rod 203. The slider 301 has both the degree of freedom to move with the push plate 3 and the degree of freedom to move with the floating support rod 203.

[0034] In this embodiment, one side of the fixed support rod 201 is fixed to the base plate 1, and the other side is provided with a sensor 204, which can detect whether the sanding belt 5 has reached the predetermined position.

[0035] The transmission mechanism of this embodiment includes a synchronous pulley A401, a synchronous pulley B402, a synchronous belt 403, and a lead screw 404. There are two lead screws 404, arranged parallel to each other vertically. Each lead screw 404 is rotatably mounted on the base plate 1. The two ends of the lead screw 404 are located on the left and right sides of the base plate 1. Both lead screws 404 are threadedly connected to the push plate 3. The motor 4 is fixed below the base plate 1. The output end of the motor 4 is connected to the synchronous pulley A401. One end of each of the two lead screws 404 is connected to the synchronous pulley B402. The synchronous pulley A401 is connected to the two synchronous pulleys B402 through the synchronous belt 403. The motor 4 drives the lead screw 404 to rotate through the synchronous pulleys A401, B402, and 403. The helical pair between the lead screw 404 and the push plate 3 is transformed into a sliding pair of the push plate 3 on the support mechanism 2.

[0036] Example 2

[0037] like Figure 4 , Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that: in this embodiment, only a spring 206, a guide post 207, and a connecting block 208 are provided between the floating support rod 203 and the fixed rod 202. The connecting block 208 is elongated, and a set of springs 206 and guide posts 207 are provided on each of the left and right sides between the connecting block 208 and the floating support rod 202. The connecting block 208 is detachably installed at the bottom of the fixed rod 202. The lower end of the guide post 207 is connected to the floating support rod 203, and the upper end of the guide post 207 is inserted into the connecting block 208 and can move relative to the connecting block 208. The two ends of the spring 206 are respectively connected to the floating support rod 203 and the fixed rod 202. The spring 206 causes the floating support rod 203 to tend to move away from the fixed rod 202, thereby providing tension for the sanding belt 5.

[0038] In this embodiment, the upper end of the guide post 207 located within the connecting block 208 is provided with a limiting block. The limiting block is an integral structure with the guide post 207 or is connected to the upper end of the guide post 207. The bottom of the connecting block 208 is provided with a mating hole for the guide post 207 to pass through. The size of the limiting block is larger than the size of the mating hole. Each side of the floating support rod 203 is provided with a guide post hole 210 and a pin hole 209. The lower end of the guide post 207 is inserted into the guide post hole 210, and the lower end of the guide post 207 is provided with an insertion hole 211. The pin passes through the pin hole 209 and is inserted into the insertion hole 211, thereby realizing the connection between the guide post 207 and the floating support rod 203. In this embodiment, the insertion hole 211 at the lower end of one guide post 207 is a round hole, and the insertion hole 211 at the lower end of the other guide post 207 is a U-shaped hole 212. The opening direction of the U-shaped hole 212 is perpendicular to the height direction of the guide post 207. The pin inserted into the U-shaped hole 212 can move within the U-shaped hole 212, thereby achieving the tilting of the floating support rod 203 relative to the fixed rod 202. The left and right sides of the floating support rod 203 are supported by the guide post 207 and the fixed rod 202. When the mating surface between the guide post 207 and the mating hole is small, if the force on the left and right sides of the floating support rod 203 is uneven, the floating support rod 203 will inevitably tilt. If no treatment is done, it will cause the guide post 207 to jam. In this embodiment, the insertion hole 211 at the lower end of one guide post 207 is designed as a U-shaped hole 212, so that the device will not jam when the floating support rod 203 tilts due to uneven force.

[0039] The rest is the same as in Example 1.

[0040] The working principle of this invention is as follows:

[0041] like Figure 6 As shown, multiple sanding belts 5 are sequentially and side-by-side mounted on the fixed support rod 201 and the floating support rod 203. The motor 4 operates, driving the lead screw 404 to rotate via the synchronous pulleys A401, B402, and the synchronous belt 403. This rotation, in turn, causes the push plate 3 and slider 301 to move axially along the fixed support rod 201 through the threaded connection between the lead screw 404 and the push plate 3. Under the push of the push plate 3 and slider 301, the sanding belts 5 move forward until the sensor 204, installed at the other end (the distal end) of the fixed support rod 201, detects that the sanding belts 5 have reached their position. The sanding belts 5 continue to be pushed forward a set distance by the push plate 3 and slider 301 until they disengage from the automatic sanding belt supply device and are mounted on the waiting sander 6, completing the automatic sanding belt supply.

Claims

1. An automatic belt feeding device, characterized in that: The system includes a base plate (1), a support mechanism (2), a pusher plate (3), a motor (4), and a transmission mechanism. The support mechanism (2) and the motor (4) are fixed on the base plate (1). The pusher plate (3) is movably mounted on the support mechanism (2). The motor (4) is connected to the pusher plate (3) through the transmission mechanism. The pusher plate (3) moves on the support mechanism (2) in a direction away from or close to the base plate (1) under the drive of the motor (4). Multiple sanding belts (5) are arranged side by side on the support mechanism (2) along the moving direction of the pusher plate (3). The pusher plate (3) moves between the base plate (1) and the sanding belts (5). Each sanding belt (5) moves in the direction of disengagement from the support mechanism (2) under the push of the pusher plate (3) until it disengages from the support mechanism (2) in sequence.

2. The automatic belt feeding device according to claim 1, characterized in that: The support mechanism (2) includes a fixed support rod (201), a fixed rod (202), and a floating support rod (203). The fixed support rod (201), the fixed rod (202), and the floating support rod (203) are all passed through by the push plate (3). The fixed support rod (201) and the fixed rod (202) are respectively fixed at the upper and lower ends of the base plate (1). The floating support rod (203) is located below the fixed rod (202) and can be relatively movable to be connected to the fixed rod (202). Each of the sanding belts (5) is sleeved on the fixed support rod (201) and the floating support rod (203).

3. The automatic belt feeding device according to claim 2, characterized in that: A scissor lift (205), a spring (206), a guide post (207), and a connecting block (208) are provided between the floating support rod (203) and the fixed rod (202). The upper left and right sides of the scissor lift (205) are respectively hinged to the fixed rod (202), and the lower left and right sides of the scissor lift (205) are respectively hinged to the floating support rod (203). The connecting block (208) is detachably installed at the bottom of the fixed rod (202). The guide post (207) The lower end of the guide post (207) is connected to the floating support rod (203), and the upper end of the guide post (207) is inserted into the connecting block (208) and can move relative to the connecting block (208); the two ends of the spring (206) are connected to the floating support rod (203) and the fixed rod (202) respectively, and the floating support rod (203) tends to move away from the fixed rod (202) through the spring (206), thereby providing tension to the sand belt (5).

4. The automatic belt feeding device according to claim 3, characterized in that: The spring (206), guide post (207), and connecting block (208) are located on one side between the floating support rod (203) and the fixed rod (202); the upper end of the guide post (207) located inside the connecting block (208) is provided with a limiting block, the limiting block is integral with the guide post (207) or connected to the upper end of the guide post (207), and the bottom of the connecting block (208) is provided with a mating hole for the guide post (207) to pass through, the size of the limiting block is larger than the size of the mating hole. The floating support rod (203) is provided with a guide post hole (210) and a pin hole (209) that are connected to each other. The lower end of the guide post (207) is inserted into the guide post hole (210), and the lower end of the guide post (207) is provided with an insertion hole (211). The pin passes through the pin hole (209) and is inserted into the insertion hole (211), thereby realizing the connection between the guide post (207) and the floating support rod (203). The floating support rod (203) and the fixed rod (202) remain parallel.

5. The automatic belt feeding device according to claim 2, characterized in that: A spring (206), a guide post (207), and a connecting block (208) are provided between the floating support rod (203) and the fixed rod (202). The connecting block (208) is detachably installed at the bottom of the fixed rod (202). The lower end of the guide post (207) is connected to the floating support rod (203), and the upper end of the guide post (207) is inserted into the connecting block (208) and can move relative to the connecting block (208). The two ends of the spring (206) are respectively connected to the floating support rod (203) and the fixed rod (202).

6. The automatic belt feeding device according to claim 5, characterized in that: The connecting block (208) is elongated. A set of springs (206) and guide posts (207) are provided on each of the left and right sides between the connecting block (208) and the floating support rod (202). A limiting block is provided at the upper end of the guide post (207) within the connecting block (208). The limiting block is integral with the guide post (207) or connected to the upper end of the guide post (207). A mating hole for the guide post (207) to pass through is provided at the bottom of the connecting block (208). The size of the limiting block is larger than the size of the mating hole. Guide post holes (210) and pin holes (209) are respectively provided on each of the left and right sides of the floating support rod (203). The lower end of the guide post (207) is inserted into the guide post hole (210), and the lower end of the guide post (207) is provided with an insertion hole (211). The pin passes through the pin hole (209) and is inserted into the insertion hole (211), thereby connecting the guide post (207) with the floating support rod (203). The insertion hole (211) at the lower end of the guide post (207) on one side is a round hole, and the insertion hole (211) at the lower end of the guide post (207) on the other side is a U-shaped hole (212). The pin inserted into the U-shaped hole (212) can move within the U-shaped hole (212), thereby making the floating support rod (203) tilted towards the fixed rod (202).

7. The automatic belt feeding device according to claim 2, characterized in that: The lower end of the push plate (3) is provided with a hollow floating space. The fixed rod (202) and the floating support rod (203) both pass through the floating space, and the floating support rod (203) moves within the floating space.

8. The automatic belt feeding device according to claim 2, characterized in that: The lower end of the push plate (3) is slidably connected to a slider (301). The sliding direction of the slider (301) relative to the push plate (3) is the same as the moving direction of the floating support rod (203). The slider (301) can be relatively moved and fitted onto the floating support rod (203). The slider (301) has both the degree of freedom to move with the push plate (3) and the degree of freedom to move with the floating support rod (203).

9. The automatic belt feeding device according to claim 2, characterized in that: One side of the fixed support rod (201) is fixed to the base plate (1), and the other side is provided with a sensor (204).

10. The automatic belt feeding device according to claim 1, characterized in that: The transmission mechanism includes a synchronous pulley A (401), a synchronous pulley B (402), a synchronous belt (403), and a lead screw (404). The lead screw (404) is rotatably mounted on the base plate (1) and threadedly connected to the push plate (3). The output end of the motor (4) is connected to the synchronous pulley A (401), and the lead screw (404) is connected to the synchronous pulley B (402). The synchronous pulley A (401) is connected to the synchronous pulley B (402) through the synchronous belt (403). The motor (4) drives the lead screw (404) to rotate through the synchronous pulley A (401), the synchronous pulley B (402), and the synchronous belt (403). The helical pair between the lead screw (404) and the push plate (3) is transformed into a sliding pair of the push plate (3) on the support mechanism (2).

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