A continuous feeding device and its usage method for die pressing of mobile phone casings

Abstract

The present invention discloses a continuous feeding device and a using method for a mobile phone shell die pressing, including a support frame, characterized in that: a working frame is fixedly installed at the upper end of the support frame, an installation groove penetrating up and down is opened at the upper end of the working frame, and a transmission device is arranged in the installation groove, a plurality of groups of material conveying devices are fixedly installed at equal intervals at the upper end of the transmission device, an aggregate pipe is movably installed between the front side wall and the rear side wall of the inner cavity of the working frame, support columns are fixedly installed at the four corners of the upper end of the working frame, a top plate is fixedly installed jointly at the upper ends of the four groups of support columns, a connection groove is opened at the left part of the upper end of the top plate, and a blanking device is fixedly installed in the connection groove, an injection molding machine is fixedly installed at the middle part of the lower end of the top plate, and a die pressing machine is fixedly installed at the right part of the lower end of the top plate. The continuous feeding device and the using method for a mobile phone shell die pressing of the present invention are simple and practical in operation, and can realize the continuous and automatic control of the feeding for mobile phone shell die pressing.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent electrical appliance peripheral production equipment, and particularly relates to a continuous feeding device and a using method for a mobile phone shell die pressing. Background Art

[0002] A mobile phone shell refers to the outer shell of a mobile phone. The commonly used plastic materials for mobile phone shells mainly include three categories: PC, ABS, and PC + ABS. Japanese mobile phones mainly use PC + ABS, and even use ABS for mobile phone shells. Feeding refers to the action or process of sending the material to be processed forward (such as sending the fabric under the needle of a sewing machine) or the continuous feeding of the workpiece during machine tool processing.

[0003] Under the existing technology, the die pressing of mobile phone shells usually first injects plastic into the mold box through an injection molding machine, and then manually or with the help of internal machinery sends it to the die pressing machine for die pressing and forming. Since the injection molding machine injects molten plastic, there is a danger in the manual handling method, and the efficiency is too low and the process is not continuous. The feeding process is slow and the work efficiency is low. Therefore, we propose a continuous feeding device for mobile phone shell die pressing. Summary of the Invention

[0004] The main purpose of the present invention is to provide a continuous feeding device and a using method for mobile phone shell die pressing, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A continuous feeding device for mobile phone shell die pressing includes a support frame. A working frame is fixedly installed at the upper end of the support frame. An installation groove penetrating up and down is opened at the upper end of the working frame, and a transmission device is arranged in the installation groove. A plurality of groups of material conveying devices are fixedly installed at equal intervals at the upper end of the transmission device. An aggregate pipe is movably installed between the front side wall and the rear side wall of the inner cavity of the working frame. Support columns are fixedly installed at the four corners of the upper end of the working frame. A top plate is fixedly installed jointly at the upper ends of the four groups of support columns. A connection groove is opened at the left part of the upper end of the top plate, and a blanking device is fixedly installed in the connection groove. An injection molding machine is fixedly installed at the middle part of the lower end of the top plate. A die pressing machine is fixedly installed at the right part of the lower end of the top plate.

[0007] The material conveying device includes a base fixedly installed at the upper end of the transmission device. At the four corners of the upper end of the base, mounting columns are fixedly installed. The upper ends of the four groups of mounting columns are jointly fixedly installed with a mounting plate. A placement groove is opened on the upper end of the mounting plate. A rectangular groove penetrating up and down is opened on the bottom wall of the inner cavity of the placement groove. A feeding box is placed in the placement groove. A feeding slot is opened on the upper end of the feeding box. A vacuum pump is fixedly installed at the left part of the upper end of the base. The output end of the vacuum pump is fixedly installed with an air suction pipe. Two suction cups are fixedly installed at equal intervals on the upper part of the outer surface of the horizontal part of the air suction pipe. The transmission device includes two connecting shafts. The front and rear ends of the two connecting shafts are respectively connected by bearings to the left end of the front and rear side walls of the inner cavity of the working frame and the right end of the front and rear side walls of the inner cavity. Roller wheels are fixedly installed on the outer surfaces of the two connecting shafts. A transmission belt is sleeved between the two roller wheels. One end of the connecting shaft on the right side penetrates through the working frame and extends to the outside thereof and is fixedly installed with a stepping motor. The blanking device includes a feeding pipe fixedly installed in a connecting groove opened on the left part of the upper end of the top plate. First telescopic rods are symmetrically fixedly installed in the middle of the front side wall and the middle of the rear side wall of the inner cavity of the feeding pipe. Second telescopic rods and two sliding blocks are symmetrically fixedly installed in the lower part of the front side wall and the lower part of the rear side wall of the inner cavity of the feeding pipe. The two sliding blocks are on the same horizontal plane as the second telescopic rods and are respectively located on the left and right sides of the second telescopic rods. The end of the second telescopic rod far from the side wall of the feeding pipe is fixedly installed with a baffle plate. Chute grooves are opened at the left end and the right end of the baffle plate. The two sliding blocks are respectively slidably connected in the chute grooves to connect the baffle plate and the sliding blocks together. The distance between the upper ends of the first telescopic rods and the baffle plate is 1.4 - 1.7 times the thickness of the feeding box, preferably 1.5 times. The feeding pipe is located directly above the placement groove.

[0008] Preferably, both of the two suction cups are located in the inner cavity of the rectangular groove, and the upper end of the suction cup is in close contact with the lower end of the feeding box.

[0009] Preferably, the aggregate pipe includes a transportation pipe. Limiting blocks are symmetrically fixedly installed at the upper part of the front end and the upper part of the rear end of the transportation pipe. Limiting grooves are symmetrically opened at the right part of the front side wall and the right part of the rear side wall of the inner cavity of the working frame. The two limiting blocks are respectively slidably connected in the limiting grooves to connect the aggregate pipe and the working frame together.

[0010] A usage method of a continuous feeding device for mobile phone shell die pressing includes the following steps:

[0011] A. Continuously place the feeding box into the feeding pipe. At this time, the baffle plate in the feeding pipe will stop the feeding box and arrange them in sequence in the feeding pipe. Start the stepping motor, and the stepping motor drives the connecting shaft to rotate, thereby driving the material conveying device on the transmission belt to move;

[0012] B. When the material conveying device is transported by the conveyor belt to directly below the feeding pipe, the stepping motor stops working. Then, two first telescopic rods are activated to move towards each other and squeeze to clamp the second-to-last feeding box from the bottom. The second telescopic rod is activated to drive the baffle to move towards the front and rear side walls of the feeding pipe, causing the blocked feeding box to fall into the placement groove. After that, the second telescopic rod drives the two baffles to move towards each other to block the falling path of the feeding box, and the first telescopic rod is released. The feeding box falls onto the baffle. When the next material conveying device is transported by the conveyor belt to directly below the feeding pipe, the above steps are repeated.

[0013] C. When a feeding box falls into the placement groove of the material conveying device, the vacuum pump evacuates the air between the sucker and the feeding box contact surface to fix the feeding box. The stepping motor controls the conveyor belt to successively pass the feeding box through the injection molding machine for injection molding and the die casting machine for die casting. After that, the feeding box is transported above the aggregate pipe. At this time, the vacuum pump stops working, and there is no fixing relationship between the sucker and the feeding box. The feeding box falls into the aggregate pipe for collection due to gravity.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] By providing a blanking device and a transmission device, when the stepping motor is energized and the conveyor belt rotates, it can drive the material conveying device on the conveyor belt to move. When the material conveying device is transported by the conveyor belt to directly below the feeding pipe, two first telescopic rods are activated to move towards each other and squeeze to clamp the second-to-last feeding box from the bottom. The second telescopic rod is activated to drive the baffle to move towards the front and rear side walls of the feeding pipe, causing the blocked feeding box to fall into the placement groove. After that, the second telescopic rod drives the two baffles to move towards each other to block the falling path of the feeding box, and the first telescopic rod is released. The feeding box falls onto the baffle. Repeating the above steps can achieve automatic feeding, which is simple and convenient to operate.

[0016] By providing a material conveying device, when the vacuum pump works, it evacuates the air between the sucker and the feeding box contact surface through the suction pipe, making the space between the sucker and the feeding box in a vacuum state. The sucker firmly adsorbs the feeding box, so that the feeding box will not shake or shift when the material conveying device moves on the conveyor belt. When it is necessary to take the material, only need to stop the vacuum pump, and the material box can fall into the aggregate pipe due to gravity, realizing automatic material taking. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of a continuous feeding device for mobile phone shell die casting according to the present invention;

[0018] Figure 2 It is a schematic diagram of the overall structure of the material conveying device of a continuous feeding device for mobile phone shell die casting according to the present invention;

[0019] Figure 3Schematic diagram of the overall structure of the transmission device of a continuous feeding device for mobile phone shell die casting according to the present invention;

[0020] Figure 4 Schematic cross-sectional view of the blanking device of a continuous feeding device for mobile phone shell die casting according to the present invention;

[0021] Figure 5 Enlarged view of part A of the blanking device of a continuous feeding device for mobile phone shell die casting according to the present invention;

[0022] Figure 6 Schematic diagram of the connection structure between the aggregate pipe and the working frame of a continuous feeding device for mobile phone shell die casting according to the present invention.

[0023] In the figure: 1, support frame; 2, working frame; 21, limit groove; 3, support column; 4, transmission device; 41, connecting shaft; 42, roller; 43, transmission belt; 44, stepping motor; 5, material transporting device; 51, base; 52, mounting column; 53, vacuum pump; 54, suction pipe; 55, suction cup; 56, mounting plate; 57, placement groove; 58, rectangular groove; 59, feeding box; 60, discharging groove; 6, aggregate pipe; 61, transportation pipe; 62, limit block; 7, top plate; 8, blanking device; 81, feeding pipeline; 82, first telescopic rod; 83, second telescopic rod; 84, slider; 85, baffle; 86, sliding groove; 9, injection molding machine; 10, die casting machine. Detailed implementation manners

[0024] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0025] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, terms such as "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] As Figures 1-6 shown, a continuous feeding device for a mobile phone shell die pressing includes a support frame 1. A working frame 2 is fixedly installed at the upper end of the support frame 1. An installation groove penetrating up and down is opened at the upper end of the working frame 2, and a transmission device 4 is arranged in the installation groove. A number of groups of material conveying devices 5 are fixedly installed at equal intervals at the upper end of the transmission device 4. An aggregate pipe 6 is movably installed between the front side wall and the rear side wall of the inner cavity of the working frame 2. Support columns 3 are fixedly installed at the four corners of the upper end of the working frame 2. A top plate 7 is fixedly installed jointly at the upper ends of the four groups of support columns 3. A connection groove is opened at the left part of the upper end of the top plate 7, and a blanking device 8 is fixedly installed in the connection groove. An injection molding machine 9 is fixedly installed at the middle part of the lower end of the top plate 7. A die pressing machine 10 is fixedly installed at the right part of the lower end of the top plate 7.

[0028] As Figure 2 shown, the material conveying device 5 includes a base 51. The base 51 is fixedly installed at the upper end of the transmission device 4. Installation columns 52 are fixedly installed at the four corners of the upper end of the base 51. An installation plate 56 is fixedly installed jointly at the upper ends of the four groups of installation columns 52. A placement groove 57 is opened at the upper end of the installation plate 56. A rectangular groove 58 penetrating up and down is opened at the bottom wall of the inner cavity of the placement groove 57. A feeding box 59 is placed in the placement groove 57. A feeding groove 60 is opened at the upper end of the feeding box 59. A vacuum pump 53 is fixedly installed at the left part of the upper end of the base 51. An air extraction pipe 54 is fixedly installed at the output end of the vacuum pump 53. Two groups of suction cups 55 are fixedly installed at equal intervals on the upper outer surface of the horizontal part of the air extraction pipe 54. Both groups of suction cups 55 are located in the inner cavity of the rectangular groove 58, and the upper ends of the suction cups 55 are closely attached to the lower end of the feeding box 59.

[0029] It should be noted that when the vacuum pump 53 works, the air between the contact surfaces of the suction cups 55 and the feeding box 59 is evacuated through the air extraction pipe 54, so that a vacuum state is formed between the suction cups 55 and the feeding box 59. The suction cups 55 firmly adsorb the feeding box 59, so that the feeding box 59 will not shake or shift when the material conveying device 5 moves on the transmission belt 43. When it is necessary to take materials, only need to stop the vacuum pump 53 from working, and the material box 59 can fall into the aggregate pipe 6 under the action of gravity.

[0030] As Figure 3As shown in the figure, the transmission device 4 includes two groups of connecting shafts 41. The front and rear ends of the two groups of connecting shafts 41 are respectively connected to the left end of the front and rear side walls of the inner cavity of the working frame 2 and the right end of the front and rear side walls of the inner cavity by bearings. Roller 42 is fixedly installed on the outer surface of the two groups of connecting shafts 41. A transmission belt 43 is sleeved between the two groups of rollers 42. One end of the connecting shaft 41 on the right side penetrates through the working frame 2 and extends to the outside thereof, and a stepping motor 44 is fixedly installed.

[0031] It should be noted that when the stepping motor 44 is powered on and works, it drives the connecting shaft 41 on the right side to rotate, thereby driving the transmission belt 43 to rotate through the connecting shaft 41, that is, it can drive the material transporting device 5 on the transmission belt 43 to move.

[0032] As Figures 4-5 shown in the figure, the blanking device 8 includes a feeding pipe 81. The feeding pipe 81 is fixedly installed in the connecting groove opened in the upper left part of the top plate 7. First telescopic rods 82 are symmetrically and fixedly installed in the middle of the front side wall and the rear side wall of the inner cavity of the feeding pipe 81. Second telescopic rods 83 and two groups of sliders 84 are symmetrically and fixedly installed in the lower part of the front side wall and the rear side wall of the inner cavity of the feeding pipe 81. The two groups of sliders 84 are on the same horizontal plane as the second telescopic rods 83, and the two groups of sliders 84 are respectively located on the left and right sides of the second telescopic rods 83. One end of the second telescopic rod 83 far from the side wall of the feeding pipe 81 is fixedly installed with a baffle 85. Chutes 86 are opened at the left end and the right end of the baffle 85. The two sliders 84 are respectively slidably connected in the chutes 86 to connect the baffle 85 and the sliders 84 together.

[0033] It should be noted that the feeding box 59 is continuously placed into the feeding pipe 81. At this time, the baffle 85 in the feeding pipe 81 will stop the feeding box 59 in the feeding pipe 81 and arrange them in sequence. When the material transporting device 5 is transported to directly below the feeding pipe 81 by the transmission belt 43, the stepping motor 44 stops working. Two first telescopic rods 82 are started to move towards each other to squeeze and clamp the second-to-last feeding box 59 at the lower end. The second telescopic rod 83 is started to drive the baffle 85 to move towards the front and rear side walls of the feeding pipe 81 to drop the blocked feeding box 59 into the placement groove 57. Then, the second telescopic rod 83 drives the two baffles 85 to move towards each other to block the falling path of the feeding box 59.

[0034] In addition, after the first telescopic rod 82 is loosened and the feeding box 59 falls on the baffle 85, when the next material transporting device 5 is transported to directly below the feeding pipe 81 by the transmission belt 43, repeating the above steps can realize automatic feeding, and the operation is simple and convenient to use.

[0035] As Figures 1-4 shown in the figure, the distance between the upper end of the first telescopic rod 82 and the baffle 85 is 1.4 - 1.7 times the thickness of the feeding box 59, preferably 1.5 times.

[0036] It should be noted that this facilitates the first telescopic rod 82 to exactly clamp the second feeding box 59 at the lower end during operation.

[0037] In addition, the feeding pipe 81 is located directly above the placement groove 57 so that the first feeding box 59 at the lower end can exactly fall into the placement groove 57.

[0038] As Figure 6 shown, the aggregate pipe 6 includes a transport pipe 61. Symmetrically fixed and installed on the upper part of the front end and the upper part of the rear end of the transport pipe 61 are limiting blocks 62. Symmetrically formed in the right part of the front side wall and the right part of the rear side wall inside the working frame 2 are limiting grooves 21. The two limiting blocks 62 are respectively slidably connected in the limiting grooves 21 to connect the aggregate pipe 6 and the working frame 2 together.

[0039] It should be noted that the aggregate pipe 6 is slidably connected in the limiting groove 21 and can slide in the limiting groove 21, which facilitates timely adjustment of the distance between the aggregate pipe 6 and the conveyor belt 43 when replacing feeding boxes 59 of different specifications to adapt to the influence brought by different gravity effects of different feeding boxes 59.

[0040] As Figures 1-6 shown, a usage method of a continuous feeding device for mobile phone shell die pressing includes the following steps:

[0041] A. Continuously place multiple feeding boxes 59 into the feeding pipe 81. At this time, the baffle 85 in the feeding pipe 81 will stop the feeding boxes 59 in the feeding pipe 81 and arrange them in sequence. Start the stepping motor 44, and the stepping motor 44 drives the connecting shaft 41 to rotate, thereby driving the material transporting device 5 on the conveyor belt 43 to move.

[0042] B. When the material transporting device 5 is transported by the conveyor belt 43 to directly below the feeding pipe 81, the stepping motor 44 stops working. Start the two first telescopic rods 82 to move towards each other and squeeze to clamp the second-to-last feeding box 59 at the lower end. At this time, start the second telescopic rod 83 to drive the baffle 85 to move towards the front and rear side walls of the feeding pipe 81 to make the blocked first feeding box 59 fall into the placement groove 57 directly below. Then, the second telescopic rod 83 drives the two baffles 85 to move towards each other to block the falling path of the feeding box 59, release the first telescopic rod 82, and let the feeding box 59 fall on the baffle 85. When the next material transporting device 5 is transported by the conveyor belt 43 to directly below the feeding pipe 81, repeat the above steps.

[0043] C. When the feeding box 59 falls into the placement groove 57 of the material feeding device 5, the vacuum pump 53 evacuates the air on the contact surface between the suction cup 55 and the feeding box 59 through the suction pipe 54 to fix the feeding box 59 in the placement groove 57. The stepping motor 44 controls the transmission belt 43 to successively pass the feeding box 59 through the injection molding machine 9 for injection molding and the die pressing machine 10 for die pressing. After die pressing, the feeding box 59 is conveyed above the aggregate pipe 6. At this time, the vacuum pump 53 stops working and there is no fixed relationship between the suction cup 55 and the feeding box 59. The feeding box 59 falls into the aggregate pipe 6 for collection due to gravity.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A continuous feeding device for mobile phone shell die pressing, including a support frame, Characterized in that: A working frame is fixedly installed at the upper end of the support frame. An installation groove penetrating up and down is opened at the upper end of the working frame, and a transmission device is arranged in the installation groove. A number of groups of material conveying devices are fixedly installed at equal intervals at the upper end of the transmission device. A collecting pipe is movably installed between the front side wall and the rear side wall of the inner cavity of the working frame. Support columns are fixedly installed at the four corners of the upper end of the working frame. A top plate is fixedly installed jointly at the upper ends of the four groups of support columns. A connecting groove is opened at the left part of the upper end of the top plate, and a blanking device is fixedly installed in the connecting groove. An injection molding machine is fixedly installed at the middle part of the lower end of the top plate, and a die pressing machine is fixedly installed at the right part of the lower end of the top plate; The material conveying device includes a base, the base is fixedly installed at the upper end of the transmission device, installation columns are fixedly installed at the four corners of the upper end of the base, an installation plate is fixedly installed jointly at the upper ends of the four groups of installation columns, a placement groove is opened at the upper end of the installation plate, a rectangular groove penetrating up and down is opened at the bottom wall of the inner cavity of the placement groove, a feeding box is placed in the placement groove, a feeding groove is opened at the upper end of the feeding box, a vacuum pump is fixedly installed at the left part of the upper end of the base, an air extraction pipe is fixedly installed at the output end of the vacuum pump, two groups of suction cups are fixedly installed at equal intervals on the upper part of the outer surface of the horizontal part of the air extraction pipe. The blanking device includes a feeding pipeline, the feeding pipeline is fixedly installed in the connecting groove opened at the left part of the upper end of the top plate, first telescopic rods are symmetrically and fixedly installed at the middle parts of the front side wall and the rear side wall of the inner cavity of the feeding pipeline, second telescopic rods and two groups of sliding blocks are symmetrically and fixedly installed at the lower parts of the front side wall and the rear side wall of the inner cavity of the feeding pipeline. The two groups of sliding blocks and the second telescopic rods are located on the same horizontal plane, and the two groups of sliding blocks are respectively located on the left and right sides of the second telescopic rods. A baffle is fixedly installed at the end of the second telescopic rod far away from the side wall of the feeding pipeline. Chute grooves are opened at the left end and the right end of the baffle, and the two sliding blocks are respectively slidably connected in the chute grooves to connect the baffle and the sliding blocks together. The distance between the upper ends of the first telescopic rod and the baffle is 1.4 - 1.7 times the thickness of the feeding box. The feeding pipeline is located directly above the placement groove. The collecting pipe includes a transportation pipe, limiting blocks are symmetrically and fixedly installed at the upper parts of the front end and the rear end of the transportation pipe, limiting grooves are symmetrically opened at the right part of the front side wall and the right part of the rear side wall of the inner cavity of the working frame, and the two limiting blocks are respectively slidably connected in the limiting grooves to connect the collecting pipe and the working frame together.

2. A continuous feeding device for mobile phone shell die pressing according to claim 1, Characterized in that: Both groups of suction cups are located inside the rectangular groove, and the upper end of the suction cup is in close fit with the lower end of the feeding box.

3. A continuous feeding device for mobile phone shell die pressing according to claim 2, Characterized in that: The transmission device includes two groups of connecting shafts. The front and rear ends of the two groups of connecting shafts are respectively connected by bearings to the left ends of the front and rear side walls of the inner cavity of the working frame and the right ends of the front and rear side walls of the inner cavity. Transmission belts are sleeved jointly between the two groups of rollers. One end of the connecting shaft on the right side penetrates through the working frame and extends to the outside thereof and is fixedly installed with a stepping motor.

4. The using method of a continuous feeding device for mobile phone shell die pressing according to claim 3, Characterized in that, It includes the following steps: A. Continuously place the feeding box into the feeding pipeline. At this time, the baffle in the feeding pipeline will stop the feeding box and arrange them in sequence in the feeding pipeline. Start the stepping motor, and the stepping motor drives the connecting shaft to rotate, thereby driving the material transporting device on the conveyor belt to move; B. When the material transporting device is transported by the conveyor belt to directly below the feeding pipeline, the stepping motor stops working. Start two first telescopic rods to move towards each other and squeeze to clamp the second-to-last feeding box at the lower end. Start the second telescopic rod to drive the baffle to move towards the front and rear side walls of the feeding pipeline, and the blocked feeding box will fall into the placement groove. Then, the second telescopic rod drives the two baffles to move towards each other to block the falling path of the feeding box, release the first telescopic rod, and let the feeding box fall on the baffle. When the next material transporting device is transported by the conveyor belt to directly below the feeding pipeline, repeat the above steps; C. When the feeding box falls into the placement groove of the material transporting device, the vacuum pump evacuates the air between the sucker and the feeding box to fix the feeding box. The stepping motor controls the conveyor belt to successively pass the feeding box through the injection molding machine for injection molding and the die casting machine for die casting. Then, the feeding box is transported above the collecting pipe. At this time, the vacuum pump stops working, and there is no fixing relationship between the sucker and the feeding box. The feeding box falls into the collecting pipe due to gravity for collection.

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