A mobile phone shell button installation production line

Abstract

The invention discloses a mobile phone case button installation production line, comprising a conveying device, on which a plurality of jigs are arranged, and a mobile phone case loading position, a button code scanning loading device, a button transfer device, a button glue obtaining device, a button installation position and a humidifying device are sequentially installed on one side of the conveying device; a switching device is arranged between the humidifying device and the conveying device, for driving the jig to switch between the two; the mobile phone case loading position is provided with a lifting mechanism 1 for opening the jig, the button installation position is provided with a lifting mechanism 2 for opening the jig, and a code scanning component for marking the mobile phone case and the jig is provided, and through the mutual cooperation of the mobile phone case loading position, the button code scanning loading device, the button transfer device, the button glue obtaining device, the button installation position, the switching device and the humidifying device, the automatic operation of the key glue dispensing is realized, and the automatic installation with the mobile phone case is realized, thereby greatly improving the production efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of mobile phone shell production equipment, in particular to a mobile phone shell button installation production line. Background Art

[0002] Mobile phones are one of the essential items in people's lives and work. With the development of society, mobile phones have more and more functions, but the only thing that remains unchanged is that the volume button and power button of the mobile phone have not been cancelled. Therefore, the mobile phone case will also reserve the corresponding volume button and power button. In terms of craftsmanship, if it is a metal or hard mobile phone case, it is usually through-hole to avoid air, while the silicone material is much simpler, and it is basically one-piece injection molding;

[0003] However, not only do mobile phones have new models, but mobile phone cases also have different requirements. The current solution is to make the mobile phone case and the buttons separately, and then connect them by dispensing glue. Since the buttons are very small and the glue is easy to stick, it is obviously impossible to meet the needs by assembling them one by one manually under the premise of large production volume.

[0004] In addition, after research, it was found that this type of glue will have cracks after natural curing, which will affect the adhesion effect. The production process takes a certain amount of time, and the glue will inevitably solidify, which will ultimately affect the quality of the product. Summary of the invention

[0005] The purpose of the present invention is to provide a mobile phone shell button installation production line to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A mobile phone shell button installation production line, comprising a conveying device, on which a plurality of jigs are arranged, and a mobile phone shell loading position, a button code scanning loading device, a button transfer device, a button acquisition and dispensing device, a button installation position and a humidifying device are sequentially installed on one side of the conveying device;

[0008] A switching device is provided between the humidifying device and the conveying device, for driving the jig to switch between the two;

[0009] The mobile phone case loading position is provided with a lifting mechanism 1 for opening the jig, the button installation position is provided with a lifting mechanism 2 for opening the jig, and a code scanning component for marking the mobile phone case and the jig is provided.

[0010] A further technical solution is that the fixture includes a base, a base is provided on the base, at least one notch is provided on one side of the base, and a retractable clamping component is provided in the base corresponding to the position of the notch, and the end of the clamping component corresponds to the position of the mobile phone case for installing buttons, and the base is provided with a vent hole corresponding to the position of the mobile phone case for installing buttons, and the vent hole is used for water vapor to enter.

[0011] The present invention is a further expansion of the jig. The clamping assembly includes a movable pressure block one passing through the base, an elastic member one being provided between the movable pressure block one and the base, a strip hole one being provided on the base, a lever one passing through the strip hole one, the lever one being connected to the movable pressure block one, notches two being provided on both sides of the notch one, corresponding to the position of the notch two, a movable pressure block two passing through the base, an elastic member two being provided between the movable pressure block two and the base, a strip hole two being provided on the base, a lever two passing through the strip hole two, the lever two being connected to the movable pressure block two, and the movable pressure block two can extend out of the edge of the base.

[0012] Further, the base includes a substrate 1 fixed on the base, one end of the substrate 1 is combined with a substrate 2, the substrate 2 can move away from or closer to the substrate 1, the substrate 1 is slidably connected to the substrate 2, and an elastic member 3 is provided between the two, a toggle block is provided at the end surface of the substrate 2, a fixing plate 1 is provided at the end of the substrate 1 close to the substrate 2, a limiting groove is provided in the fixing plate 1, a slot matching the fixing plate 1 is provided in the substrate 2, and the toggle block is placed in the limiting groove.

[0013] According to a further technical solution, the base comprises a bottom plate and a vertical plate which are perpendicularly arranged to each other, the first base plate is fixed on the vertical plate, the second end surface of the base plate is in close contact with the vertical plate, and the vertical plate is provided with a notch three corresponding to the toggle block.

[0014] A further technical solution is that the button scanning and loading device includes a material storage component, a multi-axis moving component and a button placement seat, the moving end of the multi-axis moving component is respectively installed with a visual detection component and an adsorption component, and a scanner is provided at the position corresponding to the button placement seat.

[0015] Preferably, the button placement seat includes a lifting component, the movable end of the lifting component is installed with a fixed frame, the upper end surface of the fixed frame is installed with a floating platform, an air claw is installed on the floating platform, the action end of the air claw is provided with a movable block, and the two movable blocks are combined to form a groove for fixing the button.

[0016] According to a further technical solution, the key transfer device includes a translation component 1, a rotating component 3 is installed on the movable end of the translation component, a fixed part is provided on the movable end of the rotating component 3, a rotating component 4 is installed on the fixed part, and an adsorption component 2 is provided on the end of the rotating component 4.

[0017] A further technical solution is that a button placement seat 2 is provided near a button obtaining and dispensing device, and the button obtaining and dispensing device includes a multi-axis moving component 2 and a multi-joint manipulator, a dispensing component is installed on the moving end of the multi-axis moving component 2, a mounting seat is provided at the end of the multi-joint manipulator, a cylinder 1 is fixed on the mounting seat, and an adsorption component 3 is provided at the moving end of the cylinder 1.

[0018] Preferably, it also includes a visual inspection component 2, on one side of which a recovery conveyor belt is provided, and in addition, a cleaning component for cleaning glue from the spray valve is installed at the position corresponding to the dispensing component.

[0019] According to a further technical solution, the lifting mechanism 2 includes a lifting component 2, a fixing component 2 and a code scanning component;

[0020] The second lifting component is used to trigger the pressing component to open the gap;

[0021] The second fixing component is used to limit the position of the mobile phone shell;

[0022] The code scanning component includes code scanner 2 and code scanner 3, the code scanner 2 corresponds to the mobile phone case, and the code scanner 3 corresponds to the base.

[0023] Preferably, a limiting assembly is installed at the conveying device, including two "L"-shaped limiting plates for limiting the base. Cylinder 2 is provided on both sides of the conveying device, and a shift rod is provided at the output end of cylinder 2. The two shift rods are used to abut the end of the base.

[0024] A further technical solution is that the humidifying device includes a box body, a plurality of acupuncture points for placing the jig are provided in the box body, a clamping position for fixing the jig is provided in the acupuncture points, a humidifying port corresponding to the button position is provided in the acupuncture points, the humidifying port is connected to an external atomizer through pipe one, an exhaust fan is installed in the acupuncture points, and an output end of the exhaust fan is connected to an external collection box through pipe two.

[0025] According to a further technical solution, the collection box is connected to the atomizer.

[0026] According to a further technical solution, the clamping position includes a supporting block, a fixing column is provided on the upper end surface of the supporting block, the humidification port is provided on the upper end surface of the supporting block, a recovery channel is provided around the outer circumference of the supporting block, and a recovery channel is connected to the collection box through pipe three.

[0027] According to a further technical solution, a sensor is provided in the humidifying port, and a pipe connected to the humidifying port is provided with an electronic valve.

[0028] According to a further technical solution, the switching device includes a translation component 2, a rotating component 1 is installed on the moving end of the translation component 2, a lifting component 2 is installed on the moving end of the rotating component 1, two groups of push components moving in opposite directions are installed on the moving end of the lifting component 2, and an acquisition component is installed on the output end of the push component.

[0029] According to a further technical solution, the acquisition component comprises a second fixing plate, two parallel support bars extending horizontally from the second ends of the fixing plate, a plurality of clamping columns are provided on the support bars, and the clamping columns can be clamped with the clamping holes on the fixture.

[0030] According to a further technical solution, at least one rotating component 2 is installed in the conveying device for driving the jig to lift and rotate, and the rotating component 2 includes a fixed seat, on which a ejection cylinder is installed, and a rotating cylinder is installed at the output end of the ejection cylinder, and a ejection column is fixed at the movable end of the rotating cylinder.

[0031] Beneficial effects of the present invention:

[0032] The present invention realizes the automatic operation of key dispensing and the automatic installation with the mobile phone case through the mutual cooperation of the mobile phone case loading position, the key scanning code loading device, the key transfer device, the key obtaining glue dispensing device, the key installation position, the switching device and the humidifying device, thereby greatly improving the production efficiency.

[0033] In addition, it usually takes a long time to transport the jig to the next process. By integrating the humidification device into the process, the mobile phone case with the buttons installed can only enter the humidification process in a short time, avoiding the glue from partially solidifying and cracking during the external stay time, which affects the adhesion.

[0034] In addition, the process of humidifying and curing the glue takes a certain amount of time. By setting a number of acupoints in the humidifying device, there is enough space to accommodate the mobile phone case with buttons installed. At the same time, the length of the conveying device can be shortened by switching.

[0035] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 : The overall structure diagram of the present invention.

[0037] Figure 2 : The three-dimensional structure of the fixture of the present invention Figure 1 .

[0038] Figure 3 : The three-dimensional structure of the fixture of the present invention Figure 2 .

[0039] Figure 4 : Schematic diagram of the action of the fixture of the present invention.

[0040] Figure 5 : A cross-sectional view of a fixture of the present invention.

[0041] Figure 6 : Disassembly diagram of the fixture of the present invention.

[0042] Figure 7 : Lifting mechanism 2 and limiting structure diagram of the present invention.

[0043] Figure 8 : Structural diagram of the key scanning code feeding device of the present invention.

[0044] Fig. 9 : The key acquisition dispensing device structure diagram of the present invention.

[0045] Fig.10 :Key transfer device and glue dispensing component structure of the present invention Figure 1 .

[0046] Fig.11 :T key transfer device and dispensing assembly structure of the present invention Figure 2 .

[0047] Fig.12 : Layout diagram of the humidifying device and switching device of the present invention.

[0048] Fig.13 : Humidifier structure of the present invention Figure 1 .

[0049] Fig.14 : Humidifier structure of the present invention Figure 2 .

[0050] Fig.15 : Structural diagram of the second rotating assembly of the present invention.

[0051] Fig.16 : Structural diagram of the switching device of the present invention.

[0052] Figure numerals: 1-humidifying device, 11-box, 12-acupoint, 13-bit, 131-supporting block, 132-fixed column, 133-sensor, 14-humidifying port, 15-exhaust fan, 16-pipeline one, 17-pipeline two, 18-pipeline three, 19-recovery flow channel, 2-fixture, 21-base, 211-bottom plate, 212-vertical plate, 213-notch three, 214-ventilation hole, 22-base, 221-substrate one, 222-substrate two, 223-elastic member three, 224-sliding block, 225-fixed plate one, 226-limiting groove, 231-notch one, 232-movable pressing block one, 23 3-elastic member 1, 234-hole 1, 235-lever 1, 236-notch 4, 241-notch 2, 242-movable pressure block 2, 243-elastic member 2, 244-hole 2, 245-lever 2, 3-switching device, 31-translation component 2, 32-rotation component 1, 33-lifting component 2, 34-push component, 341-frame, 342-push cylinder, 35-acquisition component, 351-fixed plate 2, 352-support bar, 353-card column, 41-conveying device, 42-rotation component 2, 421-fixed seat, 422-ejection cylinder, 423-rotation cylinder, 424-ejection column, 4 31-limiting plate, 432-cylinder 2, 433-gear lever, 5-button scanning loading device, 51-storage component 1, 52-multi-axis moving component 1, 53-button placement seat 1, 531-lifting component 1, 532-fixed frame 1, 533-floating platform, 534-air claw 1, 535-movable block, 536-groove 1, 54-visual detection component 1, 55-adsorption component 1, 56-barcode scanner 1, 57-button placement seat 2, 6-button transfer device, 61-translation component 1, 62-rotation component 3, 63-fixed part, 64-rotation component 4, 65-adsorption component 2, 7-button acquisition dispensing device , 71-multi-axis moving component 2, 72-multi-joint manipulator, 731-dispensing component, 732-visual inspection component 3, 74-mounting seat, 75-cylinder 1, 76-adsorption component 3, 77-visual inspection component 2, 78-recovery conveyor belt, 79-cleaning component, 81-lifting mechanism 1, 82-lifting mechanism 2, 821-lifting component 2, 8211-cylinder 5, 8212-cylinder 6, 8213-top plate, 822-fixed component 2, 8221-cylinder 7, 8222-fixed plate 3, 8223-positioning groove, 823-code scanning component, 8231-code scanner 2, 8232-code scanner 3. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0054] Please refer to Figure 1-16 ;

[0055] The production line described in the present invention aims to realize the automated production of mobile phone cases and buttons, as well as product tracking, and improve production efficiency; it specifically includes a conveying device 41, on which a plurality of fixtures 2 are arranged. The conveying device 41 in this embodiment can be a one-way type or a circulating type. Secondly, the fixture 2 can fix the mobile phone case and press the button on the mobile phone case; a mobile phone case loading position, a button scanning loading device 5, a button transfer device 6, a button obtaining and dispensing device 7, a button installation position and a humidifying device 1 are sequentially installed on one side of the conveying device 41;

[0056] When the jig 2 enters the mobile phone case loading position, the jig 2 used to fix the mobile phone case and the structure is opened through the lifting mechanism 81, and then the mobile phone case is placed in the jig 2. The lifting mechanism 81 is released to fix the mobile phone case on the jig 2. After that, the jig 2 with the mobile phone case installed is driven by the conveying device 41 to move toward the button installation position; at the same time, the button scanning and loading device 5 is activated. Due to the large number of devices installed in the production line, the button scanning and loading device 5 cannot directly complete the dispensing and installation actions. After obtaining the button, it scans and registers the button. , and then placed on the key transfer device 6, the scanned key is transferred to the key obtaining glue dispensing device 7 by the key transfer device 6, and glue is applied to the periphery of the key; at this time, the fixture 2 with the mobile phone case installed arrives at the key installation position, and the mobile phone case and the fixture 2 are scanned and registered at the same time, and combined with the previous key scan registration in the system, if an assembly problem is found during the quality inspection process, the mobile phone case, the key and the fixture 2 can be tracked and located to check whether there is a problem with the fixture 2. In addition, the mobile phone case and the key are entered with the manufacturer's information as early as after the code scanning is completed, which can play an anti-counterfeiting effect;

[0057] The mechanism of the jig 2 for fixing the mobile phone case is opened by the lifting mechanism 2 82, and then the key acquisition dispensing device 7 installs the key after dispensing into the corresponding position of the mobile phone case, and then the lifting mechanism 2 82 releases the structure in the jig 2. At this time, the mobile phone case can be fixed while the key is pressed on the mobile phone case. At this time, the installation of the mobile phone case and the key is completed, and then the glue curing process is carried out. The jig 2 assembled with the mobile phone case is conveyed forward by the conveying device 41, and then the jig 2 is taken out from the conveying device 41 by the switching device 3, and is placed in the humidifying device 1 for moisturizing and curing. In this embodiment, the humidifying device 1 has a plurality of acupuncture points 12, and a moisturizing operation can be performed on multiple products. After completion, the jig 2 in the humidifying device 1 is taken out by the switching device 3 and placed in the conveying device 41, and then the unloading process is entered;

[0058] The present invention realizes the automatic operation of key glue dispensing and the automatic installation with the mobile phone case through the mutual cooperation of the mobile phone case loading position, the key code scanning loading device 5, the key transfer device 6, the key acquisition glue dispensing device 7, the key installation position, the switching device 3 and the humidifying device 1, thereby greatly improving the production efficiency.

[0059] In addition, it usually takes a long time to transport the jig to the next process. By integrating the humidification device into the process, the mobile phone case with the buttons installed can only enter the humidification process in a short time, avoiding the glue from partially solidifying and cracking during the external stay time, which affects the adhesion.

[0060] In addition, the process of humidifying and curing the glue takes a certain amount of time. By setting a number of acupoints in the humidifying device, there is enough space to accommodate the mobile phone case with buttons installed. At the same time, the length of the conveying device can be shortened by switching.

[0061] One embodiment of the fixture 2 of the present invention is shown in FIG. Figure 2-Figure 6 , specifically including a base 21, on which a base 22 is provided. In this embodiment, the base 22 is placed vertically at 90° to the base 21. It should be noted that before the mobile phone case and the button are not assembled, the mobile phone case is provided with a through groove at the position corresponding to the button. When the mobile phone case is fixed on the base 22, the position of the through groove faces downward, and the base 21 is provided with a vent hole 214 corresponding to the position where the mobile phone case is installed with the button, and the vent hole 214 is used for water vapor to enter; at least one notch is provided on one side of the base 22, and a retractable clamping component is provided in the base 22 corresponding to the position of the notch, and the end of the clamping component corresponds to the position of the mobile phone case for installing the button; when the specified step is reached, the clamping component is lifted upward by the lifting mechanism 1 81 and the lifting structure 2 to make it enter the base 22, and the position is used for placing the mobile phone case and installing the button respectively. After completion, the lifting mechanism 1 81 and the lifting mechanism 2 82 release the clamping component respectively, so that it extends out from the base 22 to press the edge of the mobile phone case and the button at the same time;

[0062] The present invention further describes the clamping assembly, the clamping assembly includes a movable pressure block 232 inserted in the base 22, an elastic member 233 is provided between the movable pressure block 232 and the base 22, a strip hole 234 is provided on the base 22, a lever 235 is inserted in the strip hole 234, and the lever 235 is connected to the movable pressure block 232. The movable range of the movable pressure block 232 can be limited by the restriction of the strip hole 234 and the lever 235; first, the lever 235 is lifted upward along the strip hole 234 by the lifting mechanism 81 or the lifting mechanism 82, and the movable pressure block 232 is pulled at the same time. The movable pressure block 232 is retracted into the base 22 and compresses the elastic member 233. Then, the mobile phone case is installed into the base 22. At this time, the through groove of the mobile phone case for installing the button just corresponds to the bottom of the movable pressure block 232. Then, the button is first glued by an external device, and then transferred and placed in the through groove, so that the button passes through the inner side of the mobile phone case. At the same time, the button is bonded to the inner side of the mobile phone case, and finally the lever 235 is released. Under the action of the elastic member 233, the movable pressure block 232 is ejected from the base 22, and the end of the movable pressure block 232 will press the button tightly, so that the button is close to the mobile phone case.

[0063] Since the mobile phone case is placed in an upright manner, it is easy for the mobile phone case to tip over and deviate after being placed on the base 22. For this reason, a pre-fixed structure is provided to limit the position of the mobile phone case, specifically including two notches 241 on both sides of the notch 1 231, corresponding to the position of the two notches 241, a movable pressing block 242 is penetrated in the base 22, an elastic member 243 is provided between the movable pressing block 242 and the base 22, a strip hole 244 is provided on the base 22, a lever 245 is penetrated in the strip hole 244, and the lever 245 is connected to the movable pressing block 242, and the movable pressing block 242 can extend out of the edge of the base 22. The movable range of the movable pressing block 242 can be limited by the limitation of the two strip holes 244 and the two levers 245;

[0064] Specifically, a substrate 1 221 is fixedly mounted on the base 21, and a substrate 2 222 is combined at one end of the substrate 1 221. The substrate 1 221 and the substrate 2 222 both have the contour of the inner side of the mobile phone case. In the initial state, the substrate 2 222 is close to the substrate 1 221 under the action of external force. At this time, the model formed is smaller than the size of the mobile phone case, which is convenient for the mobile phone case to be loaded. After the mobile phone case is loaded, the substrate 2 222 moves away from the basic direction, so that the substrate 1 221 and the substrate 2 222 are respectively in conflict with the edge positions of both ends of the inner side of the mobile phone case, thereby fixing the mobile phone case;

[0065] In addition, there are two movable pressing blocks 242. When the two movable pressing blocks 242 press the edge of the mobile phone case at the same time, the two movable pressing blocks 242 form two fixed points on the edge of the mobile phone case. The position of the edge of the mobile phone case between the two fixed points will become flat, which is more conducive to installing buttons.

[0066] In this embodiment, the substrate 1 221 is fixedly arranged, and the substrate 2 22 is movably arranged. There is no limitation on the connection method of the substrate 2 22 , for example, it can be slidably connected to the substrate 1 221 , or can be movably connected to the base 21 .

[0067] This embodiment describes the connection method of the substrate 222, specifically, the substrate 1 221 and the substrate 2 222 are slidably connected, and an elastic member 3 223 is provided between the two, and a toggle block 224 is provided at the end surface of the substrate 2 222; before assembling the mobile phone case, the toggle block 224 is first pushed toward the substrate 1 221 through an external device, so that the substrate 2 222 follows the movement and approaches the substrate 1 221, and then the mobile phone case is put in, and then the toggle block 224 is released, and the substrate 2 222 is pushed to move away from the substrate 1 221 under the action of the elastic member 3 223, and finally conflicts with the inner edge of the mobile phone case.

[0068] Furthermore, one end of substrate one 221 is close to substrate two 222, and fixing plate one 225 is provided with a limiting groove 226. Substrate two 222 is provided with a slot that cooperates with fixing plate one 225. A toggle block 224 is placed in the limiting groove 226. The mutual cooperation between the toggle block 224 and the limiting groove 226 can prevent substrate one 221 from being separated from substrate two 222. At the same time, the mutual cooperation between the fixing portion 63 and the slot can limit the sliding direction of substrate two 222 from deviation.

[0069] One of the embodiments of the base 21 of the present invention specifically includes a bottom plate 211 and a vertical plate 212 that are vertically arranged. The base plate 1 221 is fixed on the vertical plate 212. The end face of the base plate 222 is in close contact with the vertical plate 212. The vertical plate 212 is provided with a notch 3 213 corresponding to the toggle block 224. The notch 3 213 is provided to provide space for the movement of the toggle block 224. In addition, the positions of the vertical plate 212 corresponding to the toggle rod 1 235 and the toggle rod 2 245 should be provided with avoidance positions to provide space for external components to move the toggle rod 1 235 and the toggle rod 2 245.

[0070] Preferably, a notch 236 is provided at the lower end of the movable pressure block 232. When the external component enters the notch 231 to assemble the button and maintains a clamped state, the clamping assembly is released, and the movable pressure block 232 presses the button against the edge of the mobile phone case. At this time, the notch 236 acts as an avoidance position. When the external component is still in the notch 231, the movable pressure block 232 can avoid the external component from falling. This can avoid the situation where the external component lacks pressure after the button is released, resulting in the displacement of the button position. After the movable pressure block 232 presses the button, the external component moves out from the position of the notch 236.

[0071] The structures of the lifting mechanism 1 81 and the lifting mechanism 2 82 in the present invention are substantially the same. This embodiment is described with reference to the structure of the lifting mechanism 2 82. Figure 7 ;

[0072] Specifically, it includes a lifting component 2 821, a fixing component 2 822 and a code scanning component 823. The lifting component 2 821 is used to trigger the pressing component to open the gap; it includes a horizontally arranged cylinder 5 8211, the output end of the cylinder 5 8211 is provided with a vertically arranged cylinder 6 8212, and the action end of the cylinder 6 8212 is installed with a horizontally arranged top plate 8213. It should be noted that the steps of the lifting mechanism 1 81 and the lifting mechanism 2 82 are different, so the top plate 8213 at the lifting mechanism 1 81 is respectively connected to the lever 1 235 and The top plate 8213 corresponds to the lever 245. When the cylinder 6 8212 drives the top plate 8213 to rise, it only conflicts with the lever 1 235 and the lever 2 245 respectively, so that the movable pressure block 1 232 and the movable pressure block 2 242 rise; and the top plate 8213 located at the lifting component 2 821 only corresponds to the lever 1 235. When the cylinder 6 8212 drives the top plate 8213 to rise, it only conflicts with the lever 1 235, so that the movable pressure block 1 232 rises to form an escape space for the button installation, but the movable pressure block 2 242 still presses the edge of the mobile phone case to avoid deviation.

[0073] There is also a fixing component 2 822 for limiting the position of the mobile phone case, specifically including a cylinder 7 8221, a fixing plate 3 8222 is fixedly provided at the output end of the cylinder 7 8221, the fixing plate 3 8222 is arranged opposite to the base 22, and a positioning groove 8223 adapted to the base 22 is provided at the end surface of the fixing plate 3 8222. When the fixture 2 reaches the specified position, the cylinder 7 8221 pushes the fixing plate 3 8222 out, so that the base 22 is embedded in the positioning groove 8223, thereby fixing the position of the mobile phone case.

[0074] There is also a code scanning component 823 including a second code scanner 8231 and a third code scanner 8232. The second code scanner 8231 corresponds to the mobile phone case, and the third code scanner 8232 corresponds to the base 21. Of course, a hole corresponding to the code scanner is provided at the fixed plate 3 8222, so that the mobile phone case is exposed for scanning.

[0075] Furthermore, a limiting assembly is installed at the conveying device 41, including two "L"-shaped limiting plates 431 for limiting the base 21, and a cylinder 2 432 is provided on both sides of the conveying device 41. A shift rod 433 is provided at the output end of the cylinder 232, and the two shift rods 433 are used to abut the end of the base 21.

[0076] One embodiment of the key scanning code feeding device 5 of the present invention is shown in FIG. Figure 8 , specifically including a material storage component 51, a multi-axis moving component 52 and a key placement seat 53. The moving end of the multi-axis moving component 52 is respectively installed with a visual detection component 54 and an adsorption component 55. The position of the key in the material storage component 51 is obtained by the visual detection component 54, and then the adsorption component 55 is driven to descend to adsorb and obtain the key, and then placed on the key placement seat 53. At this time, the key is in a horizontal state, and its side corresponds to a barcode scanner 56. The label on the side of the key is scanned by the barcode scanner 56 to enter the code information;

[0077] The key placement seat 53 includes a lifting assembly 531, a fixed frame 532 is installed on the moving end of the lifting assembly 531, a floating platform 533 is installed on the upper end surface of the fixed frame 532, an air gripper 534 is installed on the floating platform 533, and a movable block 535 is provided at the action end of the air gripper 534. The two movable blocks 535 are combined to form a groove 536 for fixing the key;

[0078] Based on the present embodiment, the key transfer device 6 does not have a lifting function, so after the code is scanned, the key placement seat 53 rises and combines with the key transfer device 6 to transfer the fixation of the key from the groove 536 to the key transfer device 6. Specifically, after the key transfer device 6 obtains the key, the air claw 534 opens the groove 536 to release the fixation of the key. At this time, the key is fixed by the key transfer device 6, and then all the components on the fixed frame 532 are driven downward by the lifting component 531 to make room for the key transfer device 6, and then the key transfer device 6 drives the key after the code is scanned to be transferred to the key placement seat 2 57; it should be noted that the key transfer device 6 first contacts the floating platform 533 to play a buffering role. In addition, the specific implementation method of the key placement seat 2 57 can refer to the key placement seat 1 53.

[0079] One embodiment of the key transfer device 6 of the present invention is shown in FIG. Fig.10Specifically, a translation component 61 is included, a rotating component 3 62 is installed at the moving end of the translation component, a fixing part 63 is provided at the movable end of the rotating component 3 62, a rotating component 4 64 is installed at the fixing part 63, an adsorption component 2 65 is provided at the end of the rotating component 4 64, and the buttons are acquired by adjusting the adsorption component 2 65 by the rotating components 3 62 and 4 64. In addition, the translation component 61 drives the various components and buttons to be transferred from the button placement seat 1 53 to the button placement seat 2 57.

[0080] One embodiment of the key-press dispensing device 7 of the present invention includes a multi-axis moving component 2 71 and a multi-joint manipulator 72. The moving end of the multi-axis moving component 2 71 is equipped with a dispensing component 731. The end of the multi-joint manipulator is provided with a mounting seat 74. A cylinder 1 75 is fixed on the mounting seat 74. The moving end of the cylinder 1 75 is provided with an adsorption component 3 76. Combined with the implementation of the key transfer component, there are different implementations for dispensing glue on the key. First of all, it should be noted that the dispensing position is a circle around the side of the key. The details are as follows:

[0081] In the first embodiment, the key is transferred from the key placement seat 1 53 to the key placement seat 2 57 by the key transfer device 6, and then the multi-joint manipulator 72 drives the adsorption component 3 76 at its mobile end to obtain the key from the key placement seat 2 57, and then transfers it to the position corresponding to the glue dispensing component 731, and the glue dispensing component 731 sprays glue from the spray valve. At the same time, the multi-joint manipulator 72 drives the key to switch positions, so as to achieve glue coating on the periphery of the key;

[0082] Implementation method 2, refer to Fig.10 and Fig.11 In this embodiment, no matter how the dispensing component 731 moves, the position of the spray valve is always kept downward or slightly tilted, and the multi-axis moving component is combined with the rotating component three 62 and the rotating component four 64 to realize five-axis linkage; further explained, since the dispensing component 731 will have a wire drawing phenomenon at the spray valve after the dispensing is completed, the spray valve must be cleaned, so after each dispensing is completed, the dispensing component 731 is driven by the multi-axis moving component to move to the cleaning component 79, specifically, the spray valve can be in contact with the dust-free cloth, and the residual glue at the spray valve can be cleaned by driving the dust-free cloth to roll;

[0083] Further, the rotating assembly three 62 and the rotating assembly four 64 in this embodiment are installed at 90°;

[0084] When the glue dispensing component 731 moves to the position corresponding to the key transfer device 6, first the rotating component three 62 drives the rotating component four 64 to rotate 90 degrees, so that the side of the key faces the spray valve of the glue dispensing component 731, and then the glue dispensing component 731 moves downward, so that the spray valve is close to the side of the key, and at the same time the spray valve sprays glue, and the rotating component four 64 drives the key to rotate 180 degrees, so that the side of the key can be completely coated with glue; it should be noted that the key is generally round or long, and when there is a height difference, the multi-axis moving component two drives the glue dispensing component to float up and down slightly; after completion, the rotating component three 62 drives the rotating component four 64 to rotate 90 degrees again to reset the key to face downward, and put the key on the key placement seat two 57, and then the multi-joint manipulator 72 drives the adsorption component three 76 to obtain the key after glue dispensing;

[0085] It should be noted that a visual inspection component 3 732 is installed on the multi-axis moving component 2 71, and the position of the button on the adsorption component 3 76 is obtained through the visual inspection component 3 732, so that the dispensing is more accurate, and the caliber of the spray valve is also very small, and the side of the button is not completely coated, and a small space is reserved on the button placement seat 2 57 to avoid glue; through such a five-axis linkage method, the dispensing operation can be achieved more accurately. In contrast, although the multi-joint manipulator 72 can achieve the dispensing operation, it requires extremely high precision, and it is more difficult for the multi-joint manipulator 72 to achieve the rotation action. This type of manipulator is expensive, has a complex structure, and the range of rotation of the joints is also very large, and the cost is extremely high. Therefore, the solution of implementation mode 2 is preferred. If the solution of implementation mode 2 is adopted, the manipulator used has fewer action requirements, a much simpler structure, and a low cost.

[0086] Regardless of which of the above methods is used, the final adsorption component three 76 obtains the key after glue dispensing and transfers it to the key installation position through the multi-joint manipulator 72. At the same time, the clamping component is opened by the lifting mechanism two 82. At this time, the key is facing the through slot of the mobile phone case, and the adsorption component three 76 is pushed downward by the cylinder one 75, so that the key is pressed against the inner edge of the mobile phone case and passes through the through slot; it should be noted that a flange is provided at the key, which is tightly bonded to the inner side of the mobile phone case and prevents the key from falling out of the through slot of the mobile phone case.

[0087] It should be noted that the adsorption component is very small and is provided with a horizontally extending extension portion, the volume of which is smaller than the space of the fourth notch 236, so when the movable pressing block 1 232 falls, the fourth notch 236 can serve as an escape position.

[0088] Preferably, after the glue dispensing is completed, the multi-joint manipulator 72 will move to an inspection position, including a visual inspection component 2 77, and the visual inspection component 2 77 will be used to inspect the key after glue dispensing. If there is a problem with the glue dispensing, the multi-joint manipulator 72 will move to the recovery conveyor belt 78, and the adsorption component 3 76 will release the adsorption of the key, causing it to fall into the recovery conveyor belt 78 for the recovery process.

[0089] Since moisturizing takes a certain amount of time, the external humidifying device 1 and the switching device 3 can avoid product accumulation; the mobile phone case and the button are installed in the fixture 2, and after the installation is completed, the fixture 2 is transferred to the moisturizing step through the conveying device 41. At this time, the fixture 2 is taken out from the conveying device 41 and transferred to the acupuncture point 12 in the humidifying device 1 by the switching device 3. Figure 12-16 ; Each acupoint 12 in the humidifying device 1 is independent of each other, and has a humidifying port 14 for independently outputting water vapor. Through such a design, each fixture 2 can have an independent moisturizing space to avoid the space being too large to ensure the humidity in each place, which affects the curing effect. In addition, it has an exhaust function. If a larger space is used, it is difficult to achieve the exhaust effect; since the moisturizing process requires a certain amount of time, as the production process progresses, more and more fixtures 2 enter the humidification process. At this time, setting up multiple acupoints 12 can play a role in accommodation and caching. At the same time, the switching device 3 can also take a fixture 2 out of the acupoint 12 and place it on the conveying device 41 to enter the next process, and then obtain another fixture 2 from the conveying device 41 and put it into the acupoint 12, and so on. The cycle is repeated. With such a design, the products can be concentrated and moisturized at the same time, which greatly shortens the length of the conveying device 41.

[0090] In one embodiment of the switching device 3 of the present invention, the switching device 3 has at least one pair of acquisition components 35, which are used to simultaneously acquire the jig 2 on the humidifying device 1 and the conveying device 41 for switching; when working, one of the acquisition components 35 acquires the jig 2 from the conveying device 41, and the other acquisition component 35 acquires the jig 2 from the acupuncture point 12, and then the switching device 3 rotates to make the two acquisition components 35 switch positions, that is, the jig 2 acquired from the conveying device 41 corresponds to the acupuncture point 12, and the jig 2 taken out from the acupuncture point 12 is transferred to the conveying device 41, and the positions of the two are swapped to complete the switching.

[0091] The switching device 3 includes a second translation component 31, a rotating component 32 is installed on the moving end of the second translation component 31, a lifting component 33 is installed on the moving end of the rotating component 32, two groups of horizontal push components 34 moving in opposite directions are installed on the moving end of the lifting component 33, and an acquisition component 35 is installed on the output end of the horizontal push component 34; the second translation component 31 drives all the upper components to move to the position corresponding to the fixture 2 or the acupoint 12, and then the horizontal push component 34 is pushed out so that the acquisition component 35 is located below the fixture 2; then the lifting component 33 drives the horizontal push component 34 and the acquisition component 35 to move upward, so that the acquisition component 35 is supported on the bottom of the fixture 2, thereby lifting the fixture 2 and suspending it in the air. Then the horizontal push assembly 34 retracts to take out the two fixtures 2 from the acupuncture point 12 and the conveying device 41 respectively, and then the rotating assembly 1 32 drives the lifting assembly 2 33 to rotate to achieve the switching of the positions of the two fixtures 2, and then the lifting assembly 2 33 drives the two horizontal push assemblies 34 to descend, and the fixtures 2 are placed on the two acupuncture points 12 and the conveying device 41 respectively, and then the horizontal push assembly 34 retracts to complete the switching; in this way, the action steps of the switching device 3 can be reduced, greatly improving the work efficiency; it should be noted that if there is a height difference between the fixture 2 located in the conveying device 41 and the acupuncture point 12, the translation assembly 2 31 and the lifting assembly 2 33 need to move multiple times to reach the position of the fixture 2 and take it out.

[0092] The rotating component 32 used in the present invention can be a rotating motor or a rotating cylinder, etc., and one embodiment of the push component 34 is to include a frame 341, in which a sliding pair and a push cylinder 342 are installed, and the acquisition component 35 is respectively connected to the output end and the sliding pair of the push cylinder 342, and the acquisition component 35 is slid back and forth along the sliding pair through the telescopic movement of the push cylinder 342; in the present invention, the acquisition component 35 includes a fixed plate 351, and two parallel support bars 352 are horizontally extended at the end of the fixed plate 351, and there is an avoidance position between the two support bars 352, which is used to avoid the placement position for supporting the fixture 2, and a plurality of clamping columns 353 are provided on the support bar 352, and the clamping columns 353 can be clamped with the clamping holes on the fixture 2, so as to fix the fixture 2 on the support bar 352.

[0093] In actual application, there is an angle difference between the position of the fixture 2 at the conveying device 41 and the position of the acupuncture point 12 in the humidifying device 1, so the switching device 3 cannot directly place the fixture 2 in its conveying device 41 into the acupuncture point 12. The bottom surface of the fixture 2 is usually close to the conveying device 41, and it is difficult for the acquisition component 35 to acquire it. Therefore, in this embodiment, at least one rotating component 2 42 is installed in the conveying device 41 to drive the fixture 2 to lift and rotate. By lifting the fixture 2, the bottom surface of the fixture 2 is separated from the conveying device 41, and then the rotation angle meets the position requirement for placement in the acupuncture point 12.

[0094] Specifically, the middle position of the conveying device 41 is hollow, and the rotating component 2 42 includes a fixed seat 421, on which is installed an ejection cylinder 422, and a rotating cylinder 423 is installed at the output end of the ejection cylinder 422. A ejection column 424 is fixed at the movable end of the rotating cylinder 423, and the ejection column 424 passes through the hollow position and contacts the bottom surface of the fixture 2, thereby lifting it.

[0095] One of the embodiments of the humidifying device 1 of the present invention includes a box body 11, and a plurality of acupuncture points 12 for placing the fixture 2 are arranged in the box body 11. One embodiment is that the humidifying device 1 is arranged on one side of the conveying device 41 and is switched with the manipulator. After the button is installed on the mobile phone case, the fixture 2 is driven to the corresponding position of the humidifying device 1 through the conveying device 41. At this time, the fixture 2 is taken out from the conveying device 41 by the manipulator and transferred to the acupuncture points 12. The box body 11 in this embodiment is in the shape of a rectangular parallelepiped and has two layers of twelve acupuncture points 12, that is, it can Twelve jigs 2 can be accommodated for humidification operation at the same time. This external humidification device 1 can shorten the length of the conveying device 41, reduce the space occupied by the equipment, and can humidify multiple mobile phone shells at one time, thereby improving production efficiency. Every time a jig 2 enters and exits the acupuncture point 12, it will be recorded on the system. During the humidification operation, timing will be performed to accurately measure the humidification time of each mobile phone shell, thereby improving the rotation efficiency of the acupuncture point 12 in the humidification device 1. After the humidification operation is completed, the jig 2 is taken out of the acupuncture point 12 by the mechanical arm and placed in the conveying device 41 to enter the next process.

[0096] Preferably, a clamping position 13 for fixing the fixture 2 is provided in the acupuncture point 12, and a humidification port 14 corresponding to the button position is provided in the acupuncture point 12, and the humidification port 14 is connected to the external atomizer through a pipe 16. The acupuncture points 12 in this embodiment are independent of each other and have independent humidification ports 14. Since the button is located at the edge of the mobile phone case and the glue position is on the inner side of the edge, the humidification port 14 is provided corresponding to the button position, so that the case can be humidified more directly to ensure the curing effect. In addition, the external atomizer should be connected to the water tank, and a small fan can be provided to blow the atomized water out of the humidification port 14. Of course, there can be other ways, which are not limited here.

[0097] Since the water vapor output from the humidification port 14 will stay in the acupuncture point 12, it will gather together to form water droplets after a long time, and finally gather together to flow out of the acupuncture point 12, resulting in water accumulation at the bottom of the device. In the embodiment of the present invention, an exhaust fan 15 is installed in the acupuncture point 12. The water vapor output from the humidification port 14 will first humidify the key position to make the case reach the best curing condition. After that, the water vapor will stay in the acupuncture point 12. At this time, the water vapor in the acupuncture point 12 is extracted by the exhaust fan 15 to avoid water accumulation. The output end of the exhaust fan 15 is connected to the external collection box through the pipeline 17, and the water vapor is transported to the collection box by the exhaust fan 15, which can be recycled.

[0098] Furthermore, the collection box is connected to the atomizer to achieve recycling and reuse.

[0099] In one of the embodiments of the utility model, the clamping position 13 includes a supporting block 131, a fixing column 132 is provided on the upper end surface of the supporting block 131, and the humidification port 14 is provided on the upper end surface of the supporting block 131. The fixture 2 is raised by the supporting block 131. When the fixture 2 needs to be taken or placed, the supporting block 131 is just placed in the avoidance position between the two support bars 352. A recovery channel 19 is provided at the bottom of the acupuncture point 12 around the outer periphery of the supporting block 131, and the recovery channel 19 is connected to the collection box through the pipeline three 18; the exhaust fan 15 cannot extract all the water vapor, and some of it will always condense into water droplets and drip onto the bottom plate 211 of the acupuncture point 12, so the recovery channel 19 is provided to make the water droplets gather together and flow out to the collection box.

[0100] In the embodiment of the present invention, a sensor 133 is provided in the humidification port 14, and a pipe 16 connected to the humidification port 14 is provided with an electronic valve. When there is no fixture 2 at the acupuncture point 12, the electronic valve is in a closed state, and water vapor does not flow out from the humidification port 14 at this time. When the fixture 2 is placed in the clamping position 13, the sensor 133 determines that there is a fixture 2 placed in the clamping position 13, and controls the electronic valve to open at this time, so that water vapor can be output from the humidification port 14 and contact the button.

[0101] The present invention describes the structure of the fixture 2, which specifically includes a base 21, on which a base 22 is provided, and the base 21 and the base 22 are installed vertically, and at least one notch is provided on the side of the base 22 close to the base 21, and a retractable clamping component is provided in the base 22 corresponding to the position of the notch, and the end of the clamping component corresponds to the position of the mobile phone case for installing the button; when the mobile phone case and the button are assembled, the clamping component is lifted up by an external device to expose the notch, and then the button after gluing is installed into the mobile phone case, and then the clamping component is released, and the button is pressed on the mobile phone case by the clamping component, at this time, the position of the button corresponds to the vent 214 on the base 21, and the vent 214 corresponds to the humidification port 14, and the water vapor flows out from the humidification port 14, and then enters the fixture 2 from the vent 214 to contact the button.

[0102] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0103] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A mobile phone shell button installation production line, characterized by: It comprises a conveying device (41), on which a plurality of jigs (2) are arranged, and on one side of the conveying device (41) are sequentially installed a mobile phone shell loading position, a key code scanning loading device (5), a key transfer device (6), a key acquisition and dispensing device (7), a key installation position and a humidifying device (1); A switching device (3) is provided between the humidifying device (1) and the conveying device (41) for driving the fixture (2) to switch between the two. The mobile phone shell loading position is provided with a first lifting mechanism (81) for opening the jig (2), the button installation position is provided with a second lifting mechanism (82) for opening the jig (2), and a code scanning component (823) for marking the mobile phone shell and the jig (2); The fixture (2) comprises a base (21), a base (22) is provided on the base (21), at least one notch is provided on one side of the base (22), a retractable pressing component is provided in the base (22) at a position corresponding to the notch, an end of the pressing component corresponds to a position of a mobile phone shell for installing a button, and a vent hole (214) corresponding to a position of a mobile phone shell for installing a button is provided on the base (21), and the vent hole (214) is used for water vapor to enter; The base (22) comprises a substrate 1 (221) fixed on the base (21); one end of the substrate 1 (221) is combined with a substrate 2 (222); the substrate 2 (222) can move away from or towards the substrate 1 (221); the substrate 1 (221) and the substrate 2 (222) are slidably connected, and an elastic member 3 (223) is provided between the two; a toggle block (224) is provided at the end surface of the substrate 2 (222); a fixing plate 1 (225) is provided at one end of the substrate 1 (221) close to the substrate 2 (222); a limiting groove (226) is provided in the fixing plate 1 (225); a slot matched with the fixing plate 1 (225) is provided in the substrate 2 (222); the toggle block (224) is placed in the limiting groove (226); The base (21) comprises a bottom plate (211) and a vertical plate (212) which are arranged perpendicular to each other, the first base plate (221) is fixed on the vertical plate (212), the end surface of the second base plate (222) is in close contact with the vertical plate (212), and the vertical plate (212) is provided with a third notch (213) corresponding to the toggle block (224).

2. A mobile phone shell button installation production line according to claim 1, characterized in that: The key scanning and loading device (5) comprises a material storage component (51), a multi-axis moving component (52) and a key placement seat (53), wherein a visual detection component (54) and an adsorption component (55) are respectively installed at the moving end of the multi-axis moving component (52), and a code scanner (56) is provided at the position corresponding to the key placement seat.

3. A mobile phone shell button installation production line according to claim 1, characterized in that: The key transfer device (6) comprises a translation component one (61), a rotating component three (62) is installed at the movable end of the translation component one (61), a fixed part (63) is provided at the movable end of the rotating component three (62), a rotating component four (64) is installed at the fixed part (63), and an adsorption component two (65) is provided at the end of the rotating component four (64).

4. A mobile phone shell button installation production line according to any one of claims 1 to 3, characterized in that: A second key placement seat (57) is provided near the key acquisition and dispensing device (7), and the key acquisition and dispensing device (7) comprises a second multi-axis moving component (71) and a multi-joint manipulator (72), a dispensing component (731) is installed at the moving end of the second multi-axis moving component (71), a mounting seat (74) is provided at the end of the multi-joint manipulator, a cylinder (75) is fixedly provided on the mounting seat (74), and an adsorption component (76) is provided at the moving end of the cylinder (75).

5. A mobile phone shell button installation production line according to claim 4, characterized in that: The second lifting mechanism (82) includes a second lifting component (821), a second fixing component (822) and a code scanning component (823); The second lifting component (821) is used to trigger the pressing component to open the gap; The second fixing component (822) is used to define the position of the mobile phone shell; The code scanning component (823) includes a second code scanning device (8231) and a third code scanning device (8232), wherein the second code scanning device (8231) corresponds to the mobile phone shell, and the third code scanning device (8232) corresponds to the base (21).

6. A mobile phone shell button installation production line according to claim 1, characterized in that: The humidifying device (1) comprises a housing (11), wherein a plurality of acupuncture points (12) for placing a fixture (2) are arranged in the housing (11), wherein a clamping position (13) for fixing the fixture (2) is arranged in the acupuncture point (12), wherein a humidifying port (14) corresponding to a key position is arranged in the acupuncture point (12), wherein the humidifying port (14) is connected to an external atomizer via a first pipe (16), wherein an exhaust fan (15) is installed in the acupuncture point (12), wherein an output end of the exhaust fan (15) is connected to an external collection box via a second pipe (17).

7. A mobile phone shell button installation production line according to claim 6, characterized in that: The clamping position (13) comprises a supporting block (131), the upper end surface of the supporting block (131) is provided with a fixing column (132), the humidification port (14) is provided on the upper end surface of the supporting block (131), and a recovery channel (19) is provided around the outer circumference of the supporting block (131) at the bottom of the acupuncture point (12), and the recovery channel (19) is connected to the collection box through a pipe three (18).

8. The mobile phone shell button installation production line according to claim 1, characterized in that: The switching device (3) comprises a second translation component (31), a first rotation component (32) is installed at the moving end of the second translation component (31), a second lifting component (33) is installed at the moving end of the first rotation component (32), two groups of horizontal push components (34) moving in opposite directions are installed at the moving end of the second lifting component (33), and an acquisition component (35) is installed at the output end of the horizontal push component (34); The acquisition component (35) comprises a second fixing plate (351), and two parallel support bars (352) extend horizontally from the end of the second fixing plate (351). The support bars (352) are provided with a plurality of clamping columns (353), and the clamping columns (353) can be clamped with the clamping holes on the fixture (2); At least one rotating assembly (42) is installed in the conveying device (41) for driving the fixture (2) to lift and rotate. The rotating assembly (42) comprises a fixed seat (421), on which an ejection cylinder (422) is installed. A rotating cylinder (423) is installed at the output end of the ejection cylinder (422), and a lift column (424) is fixed at the movable end of the rotating cylinder (423).

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