A powder metallurgy sintering device for processing mobile phone middle frame

Abstract

The present invention belongs to the technical field of powder metallurgy sintering, and specifically is a powder metallurgy sintering device for processing a mobile phone middle frame, comprising a sintering furnace, the sintering furnace comprising a heating chamber and a cooling chamber, a mesh belt conveyor being arranged between the heating chamber and the cooling chamber, and an output end of the sintering furnace being provided with a feeding mechanism for feeding the mobile phone middle frame and a sintering tray; the feeding mechanism comprises an air pump connected to the side wall of the cooling chamber, and an output pipe being connected to the output end of the air pump. The present invention achieves the purpose of slowing down the falling speed of the mobile phone middle frame by blowing air upward along the inside of a guide plate, and avoids the mobile phone middle frame being scratched due to a large impact when falling into a collection box, thereby protecting the mobile phone middle frame and improving the overall sintering quality; and also simultaneously removing a small amount of residual impurities on the sintering tray during the process of recycling the sintering tray, and avoids the trace impurities on the sintering tray affecting the sintering quality of the mobile phone middle frame, thereby jointly improving the sintering quality of the mobile phone middle frame.

Description

Technical Field

[0001] The invention relates to the technical field of powder metallurgy sintering, in particular to a powder metallurgy sintering device for processing a mobile phone middle frame. Background Art

[0002] The powder metallurgy sintering device for mobile phone middle frame processing is a heat treatment equipment specially used for manufacturing mobile phone middle frames. Based on powder metallurgy technology, it transforms metal powder into a solid and high-precision mobile phone middle frame through steps such as mixing, pressing and sintering. During the sintering process, the mobile phone middle frame is evenly placed on the sintering plate and heat treated by the sintering furnace;

[0003] In traditional technology, when the mobile phone middle frame is unloaded from the sintering furnace cooling chamber at a relatively fast speed, the collision or friction between them increases due to the effects of inertia and acceleration. The impact force or friction caused by this rapid movement causes scratches or scrapes on the surface of the mobile phone middle frame, affecting the overall sintering quality.

[0004] In addition, affected by the purity of raw materials, additives, sintering process, equipment factors and human factors, the surface of the sintering disk inevitably contains some trace impurities during the sintering process. It is impossible to simultaneously remove impurities from the surface when collecting and processing the sintering disk to avoid the trace impurities on the sintering disk affecting the sintering quality of the mobile phone middle frame.

[0005] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a powder metallurgy sintering device for processing a mobile phone middle frame to solve the technical defects proposed by the background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: A powder metallurgy sintering device for processing a mobile phone middle frame, comprising a sintering furnace, the sintering furnace comprising a heating chamber and a cooling chamber, a mesh belt conveyor is arranged between the heating chamber and the cooling chamber, and a feeding mechanism for feeding the mobile phone middle frame is arranged at the output end of the sintering furnace;

[0008] The material discharge mechanism comprises an air pump connected to the side wall of the cooling chamber, the output end of the air pump is connected to an output pipe, the output end of the cooling chamber is provided with a guide plate, and the outer side of the guide plate is provided with an impurity removal mechanism for removing impurities and discharge materials from the sintering disk;

[0009] The bottom of the guide plate is connected with a slow-down assembly, the slow-down assembly includes an O-shaped tube connected to the bottom of the guide plate, the output end of the O-shaped tube is connected with a plurality of blowpipes, and the O-shaped tube is connected with the output tube through a lower connecting tube;

[0010] The top of the guide plate is connected to a collecting assembly, which includes a pushing member. An upper connecting pipe is provided at the input end of the pushing member. Two baffles are connected to the output end of the pushing member via an upper connecting plate. An electric push rod is provided on one side of the two baffles, and a push plate is provided at the output end of the electric push rod.

[0011] Furthermore, the upper connecting pipe is connected to the output pipe, and a control valve is provided on the outer wall of the upper connecting pipe.

[0012] Furthermore, the electric push rod and the pushing member are fixedly connected to the outer wall of the cooling chamber through a mounting plate, and a collecting box is provided at the output end of the guide plate.

[0013] Furthermore, the impurity removal mechanism includes two support plates connected to the outer wall of the sintering furnace, a connecting column is rotatably arranged between the two support plates, the end of the connecting column is connected to the driving shaft of the mesh belt conveyor through a transmission member, two special-shaped turntables are symmetrically fixed on the connecting column, and the interior of the connecting column is connected to the output pipe through a side connecting pipe.

[0014] Furthermore, a plurality of grooves are provided on the outer wall of the special-shaped turntable, and conveying cavities are provided on the inner walls of the special-shaped turntable on both sides of the grooves. The conveying cavity and the interior of the connecting column are connected through the connecting cavity, and a debris removal port is provided at the output end of the conveying cavity, and a sintering disk conveyor is provided between the two special-shaped turntables.

[0015] Among them, the working process of the powder metallurgy sintering device for processing the mobile phone middle frame is:

[0016] Sintering and cooling: Place the mobile phone middle frame regularly on the sintering plate, and send the sintering plate into the sintering furnace for sintering in order. The mobile phone middle frame is first preheated and sintered in the sintering chamber, and then cooled in the cooling chamber;

[0017] Protect and collect the mobile phone middle frame: When the sintering disk drives the mobile phone middle frame to move to the front of the output end of the sintering furnace, the air pump works and delivers gas to the upper connecting pipe, the lower connecting pipe and the side connecting pipe. When the sintering disk drives the mobile phone middle frame to move to the unloading area, the control valve on the upper connecting pipe is opened to allow the gas to quickly enter the pusher, and the two sides of the sintering disk are braked and limited by the pusher. Then, the electric push rod is controlled to drive the push plate to push multiple mobile phone middle frames to one side and push the mobile phone middle frames into the guide plate;

[0018] At the same time, the gas delivered by the lower connecting pipe enters the O-shaped tube, is discharged through the blowpipe through the O-shaped tube, and is blown upward along the inside of the guide plate, thereby slowing down the falling speed of the mobile phone middle frame;

[0019] Impurity removal and collection of sintering disc: After the recovery of the mobile phone middle frame is completed, the control valve is closed and the electric push rod is reset. The pusher is acted upon by the thrust spring to quickly drive the baffle to reset and limit the sintering disc. Then, the mesh belt conveyor continuously transports the sintering disc and makes the sintering disc enter the two grooves parallel to the special-shaped turntable.

[0020] At this time, the side connecting pipe transports the gas to the connecting column, and the gas is discharged through the connecting cavity, the conveying cavity and the impurity removal port. Before the sintering disk moves to the top of the sintering disk conveyor, a small amount of residual impurities on the sintering disk are removed. When the sintering disk moves to the sintering disk conveyor along with the two special-shaped turntables, the sintering disk is recovered along with the movement of the sintering disk conveyor.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. In the present invention, when the sintering disk drives the mobile phone middle frame to move to the unloading area, the control valve on the upper connecting pipe is opened to allow the pusher to brake and limit the two sides of the sintering disk, and the electric push rod is controlled to drive the push plate to push multiple mobile phone middle frames to one side, and the mobile phone middle frames are pushed into the guide plate, and the gas blown upward from the guide plate is used to slow down the falling speed of the mobile phone middle frame, so as to avoid the mobile phone middle frame from being scratched due to the large impact when it falls into the collection box, thereby protecting the mobile phone middle frame and improving the overall sintering quality;

[0023] 2. In the present invention, the sintering disk is continuously transported by a mesh belt conveyor, and the sintering disk is made to enter two grooves parallel to the special-shaped turntable, and the side connecting pipe is used to transport the gas to the connecting column. The gas is discharged through the connecting cavity, the conveying cavity and the impurity removal port, and a small amount of residual impurities on the sintering disk are removed to avoid the trace impurities on the sintering disk from affecting the sintering quality of the mobile phone middle frame, which is convenient for the next use of the sintering disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings;

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a three-dimensional diagram of the impurity removal mechanism in the present invention;

[0027] Figure 3 It is an enlarged schematic diagram of the structure of the impurity removal mechanism in the present invention;

[0028] Figure 4 It is an enlarged schematic diagram of the structure of the material unloading mechanism;

[0029] Figure 5 It is a three-dimensional diagram of the slow-drop component in the unloading mechanism;

[0030] Figure 6 It is a schematic diagram of the internal structure of the special-shaped turntable in the impurity removal mechanism;

[0031] Figure 7 It is a three-dimensional diagram of the collecting components in the unloading mechanism;

[0032] Figure 8 Schematic diagram of the internal structure of the pusher.

[0033] Figure numerals: 1. mesh belt conveyor; 2. heating chamber; 3. connecting box; 4. cooling chamber; 5. unloading mechanism; 51. guide plate; 52. collecting box; 53. air pump; 54. collecting assembly; 541. electric push rod; 542. pushing member; 543. pushing plate; 544. upper connecting plate; 545. baffle; 546. control valve; 547. upper connecting pipe; 55. slow-drop assembly; 551. lower connecting pipe; 552. O-shaped pipe; 553. blow pipe; 6. impurity removal mechanism; 61. support plate; 62. connecting column; 63. special-shaped turntable; 64. impurity removal port; 65. conveying member; 66. side connecting pipe; 68. conveying chamber; 69. connecting chamber. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiment 1: Figure 1-8 As shown, a powder metallurgy sintering device for processing a mobile phone middle frame proposed in this embodiment includes a sintering furnace, the sintering furnace includes a heating chamber 2 and a cooling chamber 4, the heating chamber 2 and the cooling chamber 4 are connected by a connecting box 3, and a mesh belt conveyor 1 is provided between the heating chamber 2, the connecting box 3 and the cooling chamber 4;

[0036] It should be noted that the heating chamber 2, the cooling chamber 4 and the mesh belt conveyor 1 are all major components of the sintering furnace and belong to the prior art, so they will not be described in detail here. It is only necessary to have the functions of sintering, cooling and conveying the mobile phone middle frame;

[0037] The output end of the sintering furnace is provided with a feeding mechanism 5 for feeding the mobile phone middle frame; the feeding mechanism 5 comprises an air pump 53 connected to the side wall of the cooling chamber 4, the output end of the air pump 53 is connected to an output pipe, a guide plate 51 is provided on one side of the output end of the cooling chamber 4, a collecting box 52 is provided at the output end of the guide plate 51, and a cleaning mechanism 6 for cleaning and feeding the sintering disc is provided on the outer side of the guide plate 51;

[0038] The bottom of the guide plate 51 is connected with a slow-down assembly 55, which includes an O-shaped tube 552 fixedly connected to the bottom of the guide plate 51, and the output end of the O-shaped tube 552 is connected with a plurality of blowpipes 553, the output end of the blowpipe 553 is arranged toward the inside of the guide plate 51, and the O-shaped tube 552 is connected with the output pipe through the lower connecting pipe 551;

[0039] The top of the guide plate 51 is connected with a collecting assembly 54, which includes a pusher 542. An upper connecting pipe 547 is provided at the input end of the pusher 542, and the upper connecting pipe 547 is connected with the output pipe. The output end of the pusher 542 is connected with two baffles 545 through the upper connecting plate 544. An electric push rod 541 is provided on one side of the two baffles 545, and a push plate 543 is provided at the output end of the electric push rod 541.

[0040] It should be noted that the length of the push plate 543 is smaller than the distance between the two baffles 545 , so as to facilitate pushing the mobile phone middle frame on the sintering disk into the guide plate 51 to be collected by the collection box 52 .

[0041] The electric push rod 541 and the push member 542 are fixedly connected to the outer wall of the cooling chamber 4 through the mounting plate. A control valve 546 is arranged on the outer wall of the upper connecting pipe 547. The cross section of the bottom of the baffle 545 is arranged in an inverted triangle shape.

[0042] It should be noted that the pusher 542 includes a limiting cylinder, a piston is slidably arranged in the limiting cylinder, a movable rod is connected to the bottom of the piston, the movable rod movably penetrates the outside of the limiting cylinder and is fixedly connected to the connecting plate, and a thrust spring is sleeved on the outer wall of the movable rod between the piston and the inner wall of the limiting cylinder;

[0043] In this embodiment, when the sintering disk drives the mobile phone middle frame to move to the unloading area, the control valve 546 on the upper connecting pipe 547 is opened to allow the gas to quickly enter the pushing member 542, and the two sides of the sintering disk are braked and limited by the pushing member 542. Subsequently, the electric push rod 541 is controlled to drive the push plate 543 to push multiple mobile phone middle frames to one side, and push the mobile phone middle frames into the guide plate 51; at the same time, the gas is discharged through the blow pipe 553 through the O-shaped tube 552, and blown out along the inside of the guide plate 51 to the top thereof, so as to slow down the falling speed of the mobile phone middle frame, avoid the mobile phone middle frame from being scratched due to the large impact when it falls into the collection box 52, play a role in protecting the mobile phone middle frame, and improve the overall sintering quality.

[0044] Embodiment 2: Figure 1-6As shown, a powder metallurgy sintering device for processing a mobile phone middle frame proposed in this embodiment is improved on the basis of embodiment 1, and the impurity removal mechanism 6 includes two support plates 61 connected to the outer wall of the sintering furnace, and a connecting column 62 is rotatably arranged between the two support plates 61. The end of the connecting column 62 is connected to the driving shaft of the mesh belt conveyor 1 through a transmission member 65. Two special-shaped turntables 63 are symmetrically fixed on the connecting column 62, and the interior of the connecting column 62 is connected to the output pipe through a side connecting pipe 66;

[0045] It should be noted that the conveying member includes two conveying wheels, one conveying wheel is connected to the driving shaft of the mesh belt conveyor 1, and the other conveying wheel is connected to the connecting column 62, and the two conveying wheels are connected through a conveyor belt transmission.

[0046] A plurality of grooves are provided on the outer wall of the special-shaped turntable 63, and the plurality of grooves are arranged in a circular array relative to the center line of the connecting column 62. A conveying cavity 68 is provided on the inner wall of the special-shaped turntable 63 on both sides of the groove. The conveying cavity 68 is connected to the inside of the connecting column 62 through a connecting cavity 69. A debris removal port 64 is provided at the output end of the conveying cavity 68, and the output end of the debris removal port 64 is arranged toward the groove. A sintering disc conveyor is provided between the two special-shaped turntables 63.

[0047] It should be noted that, since the mobile phone middle frame on the mesh belt conveyor 1 needs to be sintered and cooled, the mesh belt conveyor 1 rotates at a slow speed, while the sintering disc conveyor rotates at a fast speed, thereby completing the recovery of the sintering disc, and the gap of the groove is greater than the thickness of the sintering disc, which is convenient for conveying the sintering disc;

[0048] After the recovery of the mobile phone middle frame is completed, the control valve 546 is closed and the electric push rod 541 is reset. The push member 542 is acted upon by the thrust spring to quickly drive the baffle 545 to reset and limit the sintering disk. Then, the mesh belt conveyor 1 continues to transport the sintering disk and allows the sintering disk to enter two grooves parallel to the special-shaped turntable 63. At this time, the side connecting pipe 66 transports the gas to the connecting column 62, and the gas is discharged through the connecting cavity 69, the conveying cavity 68 and the impurity removal port 64 to remove a small amount of residual impurities on the sintering disk, which is convenient for the next use of the sintering disk and avoids trace impurities on the sintering disk from affecting the sintering quality of the mobile phone middle frame.

[0049] In the present invention, it can be known from the combination of Example 1 and Example 2 that: the device achieves the purpose of slowing down the falling speed of the mobile phone middle frame by blowing air upward along the inside of the guide plate 51, so as to avoid the mobile phone middle frame being scratched due to the large impact when falling into the collection box 52, thereby protecting the mobile phone middle frame and improving the overall sintering quality; by recycling the sintering disk, a small amount of residual impurities on the sintering disk are simultaneously removed, so as to avoid the trace impurities on the sintering disk from affecting the sintering quality of the mobile phone middle frame, facilitate the next use of the sintering disk, and jointly improve the sintering efficiency and quality of the mobile phone middle frame.

[0050] The working process and principle of the present invention are as follows:

[0051] Step 1: Place the middle frame of the mobile phone on the sintering plate regularly, and send the sintering plate into the sintering furnace for sintering in order according to the rules. The middle frame of the mobile phone is first preheated and sintered through the sintering chamber, and then cooled through the cooling chamber 4. When the sintering plate drives the middle frame of the mobile phone to move to the output end of the sintering furnace, the air pump 53 works and delivers gas to the upper connecting pipe 547, the lower connecting pipe 551 and the side connecting pipe 66. When the sintering plate drives the middle frame of the mobile phone to move to the unloading area, the control valve 546 on the upper connecting pipe 547 is opened to allow the gas to quickly enter the pusher 542 and push the sintering through the pusher 542. The two sides of the knot plate are braked and limited, and then the electric push rod 541 is controlled to drive the push plate 543 to push the multiple mobile phone middle frames to one side, and the mobile phone middle frames are pushed into the guide plate 51; at the same time, the gas transported by the lower connecting pipe 551 enters the O-shaped tube 552, and the gas is discharged through the blowpipe 553 through the O-shaped tube 552, and blown upward along the inside of the guide plate 51, so as to slow down the falling speed of the mobile phone middle frame, and avoid the mobile phone middle frame from being scratched due to the large impact when it falls into the collection box 52, which plays a role in protecting the mobile phone middle frame and improving the overall sintering quality;

[0052] Step 2: After completing the recovery of the mobile phone middle frame, close the control valve 546 and reset the electric push rod 541. The push member 542 is acted upon by the thrust spring to quickly drive the baffle 545 to reset and limit the sintering disk. Then, the mesh belt conveyor 1 continues to transport the sintering disk and allows the sintering disk to enter two grooves parallel to the special-shaped turntable 63. At this time, the side connecting pipe 66 transports the gas to the connecting column 62, and the gas is discharged through the connecting cavity 69, the conveying cavity 68 and the impurity removal port 64. Before the sintering disk moves to the top of the sintering disk conveyor, a small amount of residual impurities on the sintering disk are removed to facilitate the next use of the sintering disk. When the sintering disk moves to the sintering disk conveyor with the two special-shaped turntables 63, the sintering disk is recycled as the sintering disk conveyor moves, completing the sintering of the mobile phone middle frame.

[0053] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A powder metallurgy sintering device for processing a mobile phone middle frame, comprising a sintering furnace, wherein the sintering furnace comprises a heating chamber (2) and a cooling chamber (4), and a mesh belt conveyor (1) is arranged between the heating chamber (2) and the cooling chamber (4), wherein: The output end of the sintering furnace is provided with a material unloading mechanism (5) for unloading materials from the mobile phone middle frame; the material unloading mechanism (5) comprises an air pump (53) connected to the side wall of the cooling chamber (4); the output end of the air pump (53) is connected to an output pipe; the output end of the cooling chamber (4) is provided with a guide plate (51); the outer side of the guide plate (51) is provided with an impurity removal mechanism (6) for unloading impurities from the sintering disk; The bottom of the guide plate (51) is connected to a slow-fall assembly (55), the slow-fall assembly (55) comprising an O-shaped tube (552) connected to the bottom of the guide plate (51), the output end of the O-shaped tube (552) being connected to a plurality of blowpipes (553), the O-shaped tube (552) being connected to the output tube via a lower connecting tube (551); The top of the guide plate (51) is connected to a collecting assembly (54), the collecting assembly (54) comprising a pushing member (542), an upper connecting pipe (547) being provided at the input end of the pushing member (542), the output end of the pushing member (542) being connected to two baffles (545) via an upper connecting plate (544), an electric push rod (541) being provided on one side of the two baffles (545), and a push plate (543) being provided at the output end of the electric push rod (541); the upper connecting pipe (547) being connected to the output pipe, A control valve (546) is provided on the outer wall of the upper connecting pipe (547); the electric push rod (541) and the pushing member (542) are both fixedly connected to the outer wall of the cooling chamber (4) via a mounting plate, and a collecting box (52) is provided at the output end of the guide plate (51); the pushing member (542) comprises a limiting cylinder, a piston is slidably provided in the limiting cylinder, a movable rod is connected to the bottom of the piston, the movable rod movably penetrates outside the limiting cylinder and is fixedly connected to the connecting plate, and a thrust spring is sleeved on the outer wall of the movable rod between the piston and the inner wall of the limiting cylinder; The impurity removal mechanism (6) comprises two support plates (61) connected to the outer wall of the sintering furnace, a connecting column (62) is rotatably arranged between the two support plates (61), the end of the connecting column (62) is connected to the driving shaft of the mesh belt conveyor (1) through a transmission member (65), two special-shaped turntables (63) are symmetrically fixedly arranged on the connecting column (62), and the interior of the connecting column (62) is connected to the output pipe through a side connecting pipe (66); a plurality of grooves are formed on the outer wall of the special-shaped turntable (63), and conveying cavities (68) are formed on the inner walls of the special-shaped turntable (63) on both sides of the grooves, and the conveying cavity (68) and the interior of the connecting column (62) are connected through a connecting cavity (69), and an impurity removal port (64) is provided at the output end of the conveying cavity (68), and a sintering disk conveyor is provided between the two special-shaped turntables (63).

2. A powder metallurgy sintering device for processing a mobile phone middle frame according to claim 1, characterized in that: The method for using the powder metallurgy sintering device for processing the mobile phone middle frame is as follows: Sintering and cooling: Place the mobile phone middle frame regularly on the sintering plate, and send the sintering plate into the sintering furnace in order for sintering. The mobile phone middle frame first passes through the sintering chamber for preheating and sintering, and then passes through the cooling chamber (4) for cooling; Protecting and collecting the mobile phone middle frame: when the sintering disk drives the mobile phone middle frame to move to the front of the output end of the sintering furnace, the air pump (53) works and delivers gas to the upper connecting pipe (547), the lower connecting pipe (551) and the side connecting pipe (66). When the sintering disk drives the mobile phone middle frame to move to the unloading area, the control valve (546) on the upper connecting pipe (547) is opened to allow the gas to quickly enter the push member (542), and the two sides of the sintering disk are braked and limited by the push member (542). Subsequently, the electric push rod (541) is controlled to drive the push plate (543) to push multiple mobile phone middle frames to one side, and the mobile phone middle frames are pushed into the guide plate (51); At the same time, the gas transported by the lower connecting tube (551) enters the O-shaped tube (552), is discharged through the blowpipe (553) via the O-shaped tube (552), and is blown upward along the inside of the guide plate (51), thereby slowing down the falling speed of the mobile phone middle frame; Impurity removal and collection of sintering disk: After the recovery of the mobile phone middle frame is completed, the control valve (546) is closed and the electric push rod (541) is reset. The push member (542) is acted upon by the thrust spring to quickly drive the baffle (545) to reset without applying a limit brake to the sintering disk. Then, the mesh belt conveyor (1) continues to transport the sintering disk and allows the sintering disk to enter two parallel grooves of the special-shaped turntable (63); At this time, the side connecting pipe (66) conveys the gas into the connecting column (62), and the gas is discharged through the connecting cavity (69), the conveying cavity (68) and the impurity removal port (64). Before the sintering disk moves to the top of the sintering disk conveyor, a small amount of impurities remaining on the sintering disk are removed. When the sintering disk moves onto the sintering disk conveyor along with the two special-shaped turntables (63), the sintering disk is recovered along with the movement of the sintering disk conveyor.

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