CN106041676B - Automatic polishing assembly line for mobile phone shells - Google Patents

Abstract

The invention provides an automatic polishing assembly line of a mobile phone shell, which mainly comprises a conveying mechanism, an automatic feeding and discharging area and an automatic polishing area, wherein the automatic feeding and discharging area is arranged on one side of the conveying mechanism and is formed by combining an automatic feeding and discharging device and a feeding and discharging robot, so that accurate and automatic feeding and discharging of the mobile phone shell are realized; the automatic grinding area comprises a plurality of full-automatic grinding machines which are arranged in parallel at intervals in a row, a grinding robot, a grinding controller, a mobile phone shell positioning jig, an automatic paper feeding mechanism and an automatic abrasive paper tearing mechanism are arranged on the full-automatic grinding machines, and heavy grinding and polishing work such as manual grinding, abrasive paper replacement and the like in the prior art is automatically finished; conveying barrier mechanism can block the cell-phone shell accurately, and the stop position does not have the deviation and is convenient for the accurate robot of polishing and takes, and can not produce the extruded condition of product. The invention realizes full-automatic polishing of the mobile phone shell, saves a large amount of manpower and material resources, and has capacity not influenced by the factors of workers; greatly improving the production efficiency and the production safety.

Description

An automatic polishing line for mobile phone cases

technical field

The invention relates to an automatic production line, in particular to an automatic polishing line for mobile phone cases.

Background technique

Under the premise of the rapid development of the smart phone industry in recent years, automatic polishing by robots has become an indispensable factor for industry competition, and the replacement of manual labor by robots will become a development trend in the future. But also there is following problem in prior art:

1. Manual grinding or one person corresponds to a robot automatic grinding machine, and the production capacity is basically greatly affected by the flow of personnel, and frequent personnel training is required, which wastes a lot of time.

2. The accuracy of manual grinding is not high and varies from person to person.

3. The grinding robot also needs to be controlled by an independent PLC controller to realize the sandpaper loading and unloading functions.

4. During the operation of the assembly line, there will be situations where products are superimposed or squeezed and crushed.

5. During the loading and unloading operation, the efficiency and accuracy of manual loading and unloading are not high.

Contents of the invention

Aiming at the problems of the prior art, the present invention provides an automatic polishing assembly line for mobile phone cases, which uses robots to automatically load and unload materials and polish. The polishing processing line has high production efficiency and stable operation, and the production capacity is not affected by worker factors, and the polishing effect and precision are higher.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

An automatic polishing line for mobile phone cases, including a transmission mechanism, the transmission mechanism includes an upper conveyor belt and a lower conveyor belt, the movement direction of the upper conveyor belt is opposite to that of the lower conveyor belt, and an automatic loading and unloading area and an automatic loading and unloading area are arranged on one side of the transmission mechanism. grinding area;

The automatic loading and unloading area includes an automatic loading and unloading device for supplying unpolished mobile phone cases and collecting polished mobile phone cases; a loading and unloading robot that rotates back and forth between the transmission mechanism and the automatic loading and unloading device for adsorption and grabbing phone case;

The automatic grinding area includes a plurality of fully automatic grinding machines placed side by side in a row at intervals, each fully automatic grinding machine is equipped with a grinding robot, a grinding controller, a mobile phone case positioning fixture and an automatic sandpaper loading mechanism. One side of the upper sandpaper mechanism is also equipped with an automatic sandpaper tearing mechanism, and the driving end of the grinding robot is equipped with a pneumatic grinding head that can absorb sandpaper and a mobile phone case;

The transmission mechanism is fixedly installed with a transmission blocking mechanism corresponding to each fully automatic grinding machine, which is convenient for the grinding robot to accurately take the mobile phone case.

Wherein, the automatic loading and unloading device includes a lifting control device and two vertically installed screw lifting mechanisms, one of which is used to raise and supply unpolished mobile phone cases, and the other screw lifting mechanism is used to descend and collect Polished phone case.

Further, the two screw lifting mechanisms both include a flat-shaped fixed frame, a servo motor, a transmission screw and a screw connection sleeve fixed on the flat-shaped fixed frame, and the servo motor is installed on the flat-shaped fixed frame backwards. The middle of the fixed frame, and the servo motor is electrically connected with the lifting control device; the shaft of the servo motor is connected with a coupling, and the servo motor is fixedly connected with the upper end of the transmission screw through the coupling; the lower end of the servo motor There is a fixed support frame on the top of the support frame, and a support plate for supporting the blister tray of the mobile phone case is fixed on the top of the support frame.

Wherein, the driving end of the loading and unloading robot is equipped with a multi-station suction cup device, and the multi-station suction cup device includes a suction cup mounting frame and a plurality of adsorption mechanisms for absorbing mobile phone shells, and the suction cup mounting frame extends outward in a ring There are five fixed connection ends distributed, and the adsorption mechanism includes five first adsorption components with the same structure, and a second adsorption component located under the suction cup mounting frame for a larger adsorption area, each fixed connection end Install one of the first adsorption components respectively.

Further, the first adsorption assembly and the second adsorption assembly have the same structure, which include a fixed plate and 4 vacuum nozzles, and an angle-adjustable nozzle connection block is provided between each vacuum nozzle and the fixed plate. One end of the suction nozzle connection block is hinged to the fixed plate, and an adjustment through hole is opened in the middle of the suction nozzle connection block, and the vacuum suction nozzle penetrates and can be adjusted to be installed in the adjustment through hole.

Wherein, the automatic sandpaper loading mechanism includes a support base plate, an upper frame plate positioned above the support base plate, and several surrounding rods connected between the support base plate and the upper frame plate, the support base plate, the upper frame plate and several The surrounding rods form two sandpaper bins together, each sandpaper bin is surrounded by a plurality of limit rods, a sandpaper pallet is arranged inside the sandpaper bin, and an electric push rod is arranged under the support base plate. The push rod of the push rod passes through the support base plate and is connected with the sandpaper supporting plate.

Wherein, the automatic tearing sandpaper mechanism includes a tearing paper fixing plate, a clamping cylinder and a clamping claw. Composed of clamping blocks, the left clamping block is arranged on the side of the clamping cylinder and connected with the clamping cylinder, the right clamping block is set opposite to the left clamping block and fixed on the upper end surface of the tear paper fixing plate .

Wherein, the pneumatic grinding head includes a pneumatic grinding mechanism and a suction cup for absorbing the mobile phone case. The pneumatic grinding mechanism includes sponge sandpaper, a pneumatic vibrating device, a fixing bracket and a plug connector, and the pneumatic vibrating device is fixedly installed on the On the fixed support, the sponge sandpaper adheres to the upper surface of the pneumatic vibrating device, and the plug joint is screwed on the pneumatic vibrating device; There are four elongated holes in a square shape on the top, and a suction cup nozzle is fixedly installed in each elongated hole.

Further, the side of the pneumatic grinding mechanism is fixedly provided with two pressing columns for pressing the mobile phone case on the positioning fixture of the mobile phone case, and the top of the pneumatic grinding mechanism is also provided with a water jet for aligning with the sponge sandpaper. Tube.

Wherein, the transmission blocking mechanism includes a first beam bracket and a second beam bracket that can straddle the conveyor belt. The vertical stopper; the left and right sides of the vertical stopper are provided with a left limiter and a right limiter that can be slid left and right, and an adjustable width is formed in the middle of the left limiter and the right limiter. The conveying channel, and the left limit bar and the right limit bar are respectively hinged with a guide bar at one end close to the second beam bracket, and the left limit bar is equipped with a side stopper near the second beam bracket.

Beneficial effects of the present invention:

An automatic polishing line for mobile phone cases provided by the present invention is composed of a transmission mechanism, an automatic loading and unloading area and an automatic polishing area arranged on one side of the transmission mechanism, and the automatic loading and unloading area is composed of an automatic loading and unloading device and a loading and unloading robot. It realizes accurate automatic loading and unloading of mobile phone shells; the automatic grinding area includes a plurality of automatic grinding machines arranged in a row at intervals, and a grinding robot, a grinding controller, and a mobile phone shell positioning controller are installed on the automatic grinding machines. tools, automatic sandpaper loading mechanism, and automatic sandpaper tearing mechanism, which automatically complete the heavy grinding and polishing work such as manual grinding and replacement of sandpaper in the past. The transmission blocking mechanism can accurately block the mobile phone case, and the stop position has no deviation, which is convenient for grinding robots. Precise handling without product extrusion. The invention realizes fully automatic grinding of mobile phone cases, saves a lot of manpower and material resources, and the production capacity is not affected by worker factors; the production efficiency and production safety are greatly improved.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of an automatic polishing line for a mobile phone case according to the present invention.

Fig. 2 is a schematic diagram of the overall structure of an automatic polishing line for a mobile phone case in another perspective according to the present invention.

Fig. 3 is a top view of an automatic polishing line of a mobile phone case according to the present invention.

Fig. 4 is a three-dimensional structure diagram of the automatic loading and unloading device in the present invention.

Fig. 5 is a three-dimensional structure diagram of the screw lifting mechanism in the present invention.

Fig. 6 is a three-dimensional structure diagram of the multi-station suction cup device in the present invention.

Fig. 7 is a three-dimensional structure diagram of a fully automatic grinding machine in the present invention.

Fig. 8 is a three-dimensional structure diagram of the pneumatic grinding head in the present invention.

Fig. 9 is a three-dimensional structure diagram of the automatic sandpaper loading mechanism in the present invention.

Fig. 10 is a three-dimensional structure diagram of the automatic sandpaper tearing mechanism in the present invention.

Fig. 11 is a three-dimensional structure diagram of the transmission blocking mechanism in the present invention.

Reference numerals in FIGS. 1 to 11 include:

1—transmission mechanism 11—upper conveyor belt 12—lower conveyor belt;

2—automatic loading and unloading device 21—lifting control device 22—screw lifting mechanism;

24—servo motor 25—drive screw 26—screw connecting sleeve;

27—coupling 28—type support frame 29—support plate;

3—Loading and unloading robot 31—Multi-station suction cup device 32—Suction cup mounting frame;

33—Fixed connection end 34—First adsorption component 35—Second adsorption component;

36—fixed plate 37—vacuum nozzle 38—nozzle connection block;

39—Adjust the through hole;

4—Grinding robot 5—Grinding controller 6—Mobile phone shell positioning fixture;

7—automatic sandpaper loading mechanism 71—support base plate 72—upper frame plate;

73—wrapping rod 74—limit rod 75—sandpaper pallet;

76—electric push rod;

8—automatic tearing sandpaper mechanism 81—tear paper fixing plate 82—clamping cylinder;

83—left clamping block 84—right clamping block;

9—pneumatic grinding head 91—sponge sandpaper 92—pneumatic vibration device;

93—fixed bracket 94—suction cup frame 95—suction cup mouth;

96—compression column 97—water spray pipe;

10—transmission blocking mechanism 101—first crossbeam support 102—second crossbeam support;

103—vertical blocker 104—left limit bar 105—right limit bar;

106—guide bar 107—side stopper.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention. The present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figures 1 to 3, the present invention provides an automatic polishing line for mobile phone cases, which includes a transmission mechanism 1, and the transmission mechanism 1 includes an upper conveyor belt 11 and a lower conveyor belt 12, and the upper conveyor belt 11 and the lower conveyor belt The direction of motion of 12 is opposite. In the present embodiment, the unpolished mobile phone case is put on the lower conveyor belt 12, and then sent to the full-automatic grinder, and the mobile phone shell after the full-automatic grinder is polished is put back into the upper conveyor belt 11. The transmission mechanism 1 in the present invention is provided with an automatic loading and unloading area and an automatic grinding area on the same side;

The automatic loading and unloading area includes an automatic loading and unloading device 2 for supplying unpolished mobile phone shells and collecting polished mobile phone shells; a loading and unloading robot 3 rotates back and forth between the transmission mechanism 1 and the automatic loading and unloading device 2, and uses The automatic loading and unloading area is composed of an automatic loading and unloading device 2 and a loading and unloading robot 3 to realize accurate automatic loading and unloading of the mobile phone case.

The automatic grinding area includes a plurality of fully automatic grinding machines placed side by side in a row at intervals, each fully automatic grinding machine is equipped with a grinding robot 4, a grinding controller 5, a mobile phone shell positioning fixture 6 and an automatic sandpaper loading mechanism 7. An automatic sandpaper tearing mechanism 8 is also installed on one side of the automatic sandpaper loading mechanism 7, and the driving end of the polishing robot 4 is equipped with a pneumatic grinding head 9 that can absorb sandpaper and a mobile phone case. The full-automatic grinding machine automatically completes the heavy grinding and polishing work such as manual grinding and replacing sandpaper in the past, and realizes fully automatic grinding of mobile phone cases. The automatic grinding assembly line of the present invention is put into the production of mobile phone cases. An assembly line only needs one guard. It saves a lot of manpower and material resources, and the production capacity is not affected by worker factors; it greatly improves production efficiency and production safety.

The transmission mechanism 1 is fixedly installed with a transmission blocking mechanism 10 corresponding to each fully automatic grinding machine, which is convenient for the grinding robot 4 to accurately take the mobile phone case. The transmission blocking mechanism 10 can accurately block the mobile phone case, and the stop position has no deviation, which is convenient for the polishing robot to take accurately, and the situation of product extrusion will not occur.

In the present invention, the automatic loading and unloading device 2 includes a lifting control device 21 and two vertically installed screw lifting mechanisms 22, wherein one screw lifting mechanism 22 is used to lift and supply unpolished mobile phone shells, and the other screw lifting mechanism 22 The rod elevating mechanism 22 is used for descending and collecting the polished mobile phone case. The lifting control device 21 and the screw lifting mechanism 22 are assembled together on the loading and unloading machine platform, wherein the lifting control device 21 is installed above a corner of the loading and unloading machine platform through a connecting rod, which is convenient for the operation and input of the staff. Control instruction.

Further, the two screw lifting mechanisms 22 each include a flat-shaped fixed frame, a servo motor 24, a transmission screw 25, and a screw connecting sleeve 26 fixedly arranged on the flat-shaped fixed frame, and the servo motor 24 is inverted. To be arranged in the middle of the vertical fixed frame, and the servo motor 24 is electrically connected with the lifting control device 21; the rotating shaft of the servo motor 24 is connected with a shaft coupling 27, and the servo motor 24 is connected to the transmission screw rod 25 through the shaft coupling 27 The upper end of the servomotor 24 is fixedly connected with the lower end of the servo motor 24. The lower end of the servo motor 24 is fixedly provided with a flat support frame 28, and the top of the flat support frame 28 is fixedly provided with a support plate 29 for supporting the blister tray of the mobile phone case.

The present invention realizes the lifting of the support plate 29 through the screw lifting mechanism 22. Before work, manually place a large number of mobile phone cases to be polished in the plastic tray on one of the support plates 29, and wait for the loading and unloading robot 3 to grab them. On the lower conveyor belt 12, every time the mobile phone case to be polished in a blister tray is grabbed, the servo motor 24 will drive the corresponding support plate 29 to rise by the thickness distance of a blister tray. The present invention realizes automatic loading and unloading through the screw rod lifting mechanism 22, the whole process saves time and labor, has high work efficiency and low labor intensity.

As preferably, the support plate 29 is a rectangular support plate, four corners of the rectangular support plate are respectively vertically provided with a guide column, and a guide sleeve is provided corresponding to the guide column on the loading and unloading machine platform, and the guide column Pass through the middle of the guide sleeve, and the lower end of the guide column is provided with a stop ring. The guide column and the guide sleeve cooperate with each other to ensure that the action of the screw lifting mechanism 22 is stable during the lifting process, and the stop ring can stop the servo motor 24 in time to play the role of stroke upper limit protection.

In the present invention, the driving end of the loading and unloading robot 3 is equipped with a multi-station suction cup device 31, and the multi-station suction cup device 31 includes a suction cup mounting frame 32 and a plurality of adsorption mechanisms for adsorbing mobile phone cases. The suction cup mounting frame 32 extends outwards and is provided with five fixed connection ends 33 in a circular distribution. The adsorption mechanism includes five first adsorption components 34 with the same structure, and is arranged under the suction cup mounting frame 32 for a larger adsorption area. Each of the fixed connection ends 33 is equipped with one of the first adsorption components 34 .

As shown in Figure 6, five first adsorption components 34 are installed on the suction cup mounting frame 32 at the same time. When the loading and unloading robot 3 is working, it can pick up 5 mobile phone cases at one time. Compared with the prior art, the present invention can not only greatly reduce the work intensity of the workers, but also reduce the loading and unloading due to the ability to pick up multiple workpieces at one time. The number of times that the robot 3 picks up and down increases the work efficiency several times, reduces the production cost of the enterprise, and is beneficial to the on-site management of the enterprise.

Further, the first suction assembly 34 and the second suction assembly 35 have the same structure, including a fixed plate 36 and four vacuum suction nozzles 37, and an adjustable angle is provided between each vacuum suction nozzle 37 and the fixed plate 36. The suction nozzle connection block 38, one end of the suction nozzle connection block 38 is hinged with the fixed plate 36, and an adjustment through hole 39 is opened in the middle of the suction nozzle connection block 38, and the vacuum suction nozzle 37 penetrates and is adjustable and installed on the adjustment Inside the through hole 39. The five first adsorption assemblies 34 are fixedly installed on the suction cup mounting frame 32 through the fixing plate 36, and the suction cup mounting frame 32 is turned over 72° so that one first adsorption assembly 34 can be used to absorb the mobile phone case. The four vacuum suction nozzles 37 are arranged in a square shape, and the adsorbed mobile phone case has four adsorption forces, the suction process is stable, and it is not easy to loosen and fall off. In addition, the opening angle of the vacuum nozzle 37 can be adjusted through the nozzle connection block 38, and the vacuum nozzle 37 moves in the adjustment through hole 39 to increase or reduce its adsorption range; making it suitable for adsorption of different areas. phone case. The structure of the second adsorption assembly 35 is the same as that of the first adsorption assembly 34. The vacuum suction nozzle 37 of the second adsorption assembly 34 has a larger size and a larger adsorption range, and is suitable for adsorbing larger objects, such as for adsorption Blister tray for placing phone cases.

In the present invention, the automatic sandpaper loading mechanism 7 includes a support base plate 71, an upper frame plate 72 located above the support base plate 71, and several surrounding rods 73 connected between the support base plate 71 and the upper frame plate 72. The support base plate 71, the upper frame plate 72 and several surrounding rods 73 form two sandpaper bins together, and a plurality of limit rods 74 are arranged around each sandpaper bin, and the limit rods 74 can reduce the production and manufacture of the sandpaper bins. Difficulty, it can guide the movement when loading and unloading the sandpaper, and after loading the sandpaper, the sandpaper can be kept in a good stacking order in the sandpaper bin. A sandpaper supporting plate 75 is arranged inside the sandpaper bin, and an electric push rod 76 is arranged below the supporting bottom plate 71 , and the push rod of the electric pushing rod 76 passes through the supporting bottom plate 71 and is connected with the sandpaper supporting plate 75 . Hundreds of sandpaper can be neatly stored in the two sandpaper bins, and the sandpaper can be automatically fed upwards through the electric push rod 76. The electric push rod 76 has a simple structure, is easy to install and use, and can effectively improve production efficiency, reduce manual intervention, and save manpower cost and reduce production safety hazards.

In the present invention, the automatic tearing sandpaper mechanism 8 includes a tearing paper fixing plate 81, a clamping cylinder 82 and a clamping claw. Claw is made up of left clamping piece 83 and right clamping piece 84, and described left clamping piece 83 is located at the side of clamping cylinder 82 and is connected with clamping cylinder 82, and described right clamping piece 84 and left clamping The holding blocks 83 are arranged opposite and fixed on the upper end surface of the tear paper fixing plate 81 .

When the grinding robot 4 moves to the top of the tearing paper fixing plate 81, an induction switch is provided above the automatic tearing sandpaper mechanism 8, and when the induction switch obtains the arrival signal of the grinding robot 4, it sends a signal to the clamping cylinder 82 to make the left clamping The block 83 moves to the right clamping block 84, and the sponge sandpaper 91 is clamped. When the grinding robot 4 receives the clamping signal and waits for 0.3 seconds, the grinding robot 4 moves upwards to make the sponge sandpaper 91 detach from the pneumatic grinding head 9. After the grinding robot 4 leaves, the clamping cylinder 82 retreats, and the clamping claws release the sponge Sandpaper 91 completes the action of tearing off the sandpaper automatically.

In the present invention, the pneumatic grinding head 9 includes a pneumatic grinding mechanism and a suction cup for absorbing the mobile phone case. The pneumatic grinding head 9 integrates the functions of polishing, grinding and absorbing the mobile phone case. When it is completed on the same grinding robot 4 After the positioning and installation of the mobile phone case, the polishing and grinding work can be carried out immediately, which effectively improves the working efficiency of the stand-alone polishing and grinding. The pneumatic grinding mechanism includes a sponge sandpaper 91, a pneumatic vibration device 92, a fixed bracket 93 and a plug connector (not shown in the figure), the pneumatic vibration device 92 is fixedly installed on the fixed bracket 93, and the sponge sandpaper 91 adheres to On the upper surface of the pneumatic vibrating device 92, the plug joint is screwed on the pneumatic vibrating device 92; the pneumatic grinding mechanism can produce front and rear, left and right, up and down vibrations, and through the vibration of the pneumatic vibrating device 92, the sponge sandpaper 91 and the contacted The mobile phone case produces relative motion and friction grinding, which effectively reduces the labor intensity of grinding, saves labor time, and improves the yield rate. Described suction cup device comprises suction cup frame 94, gas distribution seat (not marked in the figure) and the suction cup nozzle 95 that is communicated with gas distribution seat, has four elongated holes in a square shape on suction cup frame 94, each elongated A suction cup nozzle 95 is fixedly installed in the hole. The suction cup nozzle 95 is installed in the elongated hole to adjust the adsorption area, thereby being able to adsorb mobile phone cases with different areas, and has a simple structure, stable performance and easy maintenance.

Further, the side of the pneumatic grinding mechanism is fixedly provided with two pressing columns 96 for pressing the mobile phone case on the mobile phone case positioning jig 6, when the suction cup accurately puts the mobile phone case into the mobile phone case positioning jig 6 6, the entire pneumatic grinding head 9 is turned over 90° by the grinding robot 4, so that the compression column 96 is facing the mobile phone case, and then the compression column 96 is moved down to contact the mobile phone case, so that the mobile phone case is accurately positioned and stabilized on the mobile phone case Fixture 6 can prevent the mobile phone case from loosening during the polishing process. A water spray pipe 97 aimed at the sponge sandpaper 91 is also arranged on the top of the pneumatic grinding mechanism. The water spray pipe 97 sprays water to the sponge sandpaper 91 during grinding, so that the dust produced during grinding is directly moistened by water and taken away, effectively avoiding environmental pollution caused by dust, eliminating the risk of dust explosion, and avoiding damage to the health of employees.

In the present invention, the transmission blocking mechanism includes a first beam bracket 101 and a second beam bracket 102 that can span the conveyor belt, the first beam bracket 101 is located in front of the second beam bracket 102, and the first beam bracket The middle part of 101 is equipped with the vertical stopper 103 that can be retracted up and down; The middle of the bar 104 and the right limiting bar 105 forms a conveying channel with adjustable width. Since the first crossbeam support 101 and the second crossbeam support 102 move left and right, the width of the conveying passage can be adjusted to adapt to mobile phone cases with different widths. And the left limiting bar 104 and the right limiting bar 105 are respectively hinged with a guide bar 106 at one end close to the second beam bracket 102, and the left limiting bar 104 is equipped with a side stopper near the second beam bracket 102 107.

The first crossbeam bracket 101 and the second crossbeam bracket 102 are arranged front and rear and are fixed above the upper conveyor belt 11 or the lower conveyor belt 12 through connecting feet. When the mobile phone case is placed on the upper conveyor belt 11 or the lower conveyor belt 12, it can only pass through the middle of the conveying channel, and the vertical stopper 103 is just located in the middle of the conveying channel, so the vertical stopper 103 can extend downwards The mobile phone case is accurately blocked in front, and there is no deviation in the stop position, which is convenient for the loading and unloading robot 3 to take it accurately. This transmission blocking mechanism is provided with multiple sets of sensing optical fibers. When a product is blocked in front of the vertical blocking device 103 and is waiting for the polishing robot 4 to take it away, at this time, if there is a mobile phone case being transmitted from the back, the incoming material will be sensed. After the optical fiber senses the product, it will control the side stopper 107 to stretch out the blocking rod to prevent the product from continuing to be conveyed until the mobile phone case in front is taken away by the polishing robot 4, so as to effectively prevent product extrusion and interference in the conveying channel . Since the width of the conveyor belt is greater than that of the conveying channel, the two guide strips 106 are rotated and opened to form a trumpet-shaped entrance, so that the mobile phone cases can be accurately arranged one by one into the conveying channel without product extrusion.

The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field , without departing from the scope of the technical solution of the present invention, when using the technical content disclosed above to make some changes or modifications to equivalent embodiments with equivalent changes, but as long as it does not depart from the technical solution of the present invention, the technology of the present invention refers to the above Any simple modifications, equivalent changes and modifications made in the embodiments all belong to the scope of the technical solution of the present invention.

Claims (8)

1. An automatic polishing assembly line for mobile phone shells, characterized in that: it includes a transmission mechanism, the transmission mechanism includes an upper conveyor belt and a lower conveyor belt, the upper conveyor belt and the lower conveyor belt move in the opposite direction, and one side of the transmission mechanism is provided with Automatic loading and unloading area and automatic grinding area; The automatic loading and unloading area includes an automatic loading and unloading device for supplying unpolished mobile phone cases and collecting polished mobile phone cases; a loading and unloading robot that rotates back and forth between the transmission mechanism and the automatic loading and unloading device for adsorption and grabbing phone case; The automatic grinding area includes a plurality of fully automatic grinding machines placed side by side in a row at intervals, each fully automatic grinding machine is equipped with a grinding robot, a grinding controller, a mobile phone case positioning fixture and an automatic sandpaper loading mechanism. One side of the upper sandpaper mechanism is also equipped with an automatic sandpaper tearing mechanism, and the driving end of the grinding robot is equipped with a pneumatic grinding head that can absorb sandpaper and a mobile phone case; The transmission mechanism is fixedly installed with a transmission blocking mechanism corresponding to each fully automatic grinding machine, which is convenient for the grinding robot to accurately take the mobile phone case; The automatic loading and unloading device includes a lifting control device and two vertically installed screw lifting mechanisms, one of which is used to raise and supply unpolished mobile phone cases, and the other screw lifting mechanism is used to descend to collect polished The mobile phone case; the two screw lifting mechanisms both include a flat-shaped fixed frame, a servo motor, a transmission screw and a screw connection sleeve fixed on the flat-shaped fixed frame, and the servo motor is installed on the flat-shaped fixed frame backwards. The middle of the type fixed frame, and the servo motor is electrically connected with the lifting control device; the shaft of the servo motor is connected with a coupling, and the servo motor is fixedly connected with the upper end of the transmission screw through the coupling; the servo motor The lower end part is fixedly provided with a flat support frame, and the top of the flat support frame is fixedly provided with a support plate for supporting the blister tray carrying the mobile phone case. 2. The automatic polishing assembly line of a mobile phone shell according to claim 1, characterized in that: the driving end of the loading and unloading robot is equipped with a multi-station suction cup device, and the multi-station suction cup device includes a suction cup mounting frame and A plurality of adsorption mechanisms for absorbing the mobile phone case, the suction cup mounting bracket is extended outwards and arranged in a circular distribution with five fixed connection ends, the adsorption mechanism includes five first adsorption components with the same structure, and is located on the suction cup installation The lower part of the rack is used for the second adsorption component with larger adsorption area, and one of the first adsorption components is installed on each fixed connection end. 3. The automatic polishing assembly line of a mobile phone case according to claim 2, characterized in that: the first adsorption assembly and the second adsorption assembly have the same structure, including a fixed plate and 4 vacuum suction nozzles, each An angle-adjustable nozzle connection block is provided between the vacuum nozzle and the fixed plate. One end of the nozzle connection block is hinged to the fixed plate, and an adjustment through hole is opened in the middle of the nozzle connection block. The vacuum nozzle Through and adjustable installed in the adjustment through hole. 4. The automatic polishing assembly line of a mobile phone case according to claim 1, characterized in that: the automatic sandpaper loading mechanism includes a support base plate, an upper frame plate positioned above the support base plate, and several wires connected to the support base plate and The surrounding rods between the upper frame plates, the support base plate, the upper frame plate and several surrounding rods together form two sandpaper bins, and a plurality of limit rods are arranged around each sandpaper bin. There is a sandpaper supporting plate, and an electric push rod is arranged under the supporting bottom plate, and the push rod of the electric pushing rod passes through the supporting bottom plate and is connected with the sandpaper supporting plate. 5. The automatic polishing assembly line of a mobile phone case according to claim 1, characterized in that: the automatic tearing sandpaper mechanism includes a tearing paper fixing plate, a clamping cylinder and a clamping claw, and the clamping cylinder is laterally installed on the The upper end surface of the tear paper fixing plate, the clamping claw is composed of a left clamping block and a right clamping block, the left clamping block is arranged on the side of the clamping cylinder and connected with the clamping cylinder, the right The clamping block is arranged opposite to the left clamping block and is fixed on the upper end surface of the tear paper fixing plate. 6. An automatic polishing line for mobile phone cases according to claim 1, wherein the pneumatic polishing head includes a pneumatic polishing mechanism and a suction cup for absorbing the mobile phone case, and the pneumatic polishing mechanism includes a sponge sandpaper, a pneumatic vibration device, a fixed bracket and a plug joint, the pneumatic vibration device is fixedly installed on the fixed bracket, the sponge sandpaper adheres to the upper surface of the pneumatic vibration device, and the plug joint is screwed on the pneumatic vibration device; the suction cup It includes a suction cup frame, an air distribution seat and a suction cup mouth connected with the air distribution seat. Four elongated holes are opened in a square shape on the suction cup frame, and a suction cup nozzle is fixedly installed in each elongated hole. 7. The automatic grinding assembly line of a mobile phone case according to claim 6, characterized in that: two presses for pressing the mobile phone case on the mobile phone case positioning jig are fixedly arranged on the side of the pneumatic grinding mechanism. Tight column, the top of the pneumatic grinding mechanism is also provided with a water spray pipe aimed at the sponge sandpaper. 8. An automatic polishing assembly line for mobile phone cases according to claim 1, characterized in that: the transmission blocking mechanism includes a first beam bracket and a second beam bracket that can straddle the conveyor belt, and the first beam bracket It is located in front of the second beam bracket, and the middle part of the first beam bracket is equipped with a vertical stopper that can be stretched up and down; the left and right sides of the vertical stopper are provided with left and right limiters that can be slid left and right. The limit bar forms a width-adjustable conveying channel in the middle of the left limit bar and the right limit bar, and the left limit bar and the right limit bar are respectively hinged with a guide bar at one end close to the second crossbeam bracket, so The left limiting bar is provided with a side stopper close to the second beam bracket.