Mobile phone middle frame bulk material placement machine
By designing a mobile phone midframe bulk material mounting machine, the induction positioning mechanism and automatic mounting mechanism are used to realize the automatic mounting of midframe and bulk material, the problems of low accuracy, slow efficiency and unstable quality caused by manual operation in the prior art are solved, and efficient and stable automated production is achieved.
Patent Information
- Application Number
- CN202421068221.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-05-16
AI Technical Summary
In the existing mobile phone production lines, the mounting process of middle frames and bulk materials relies on manual operations, resulting in low accuracy, slow efficiency and unstable quality, making it difficult to meet the needs of large-scale automated production.
A mobile phone midframe bulk material mounting machine is designed, including a workbench, conveyor belt, induction positioning mechanism, automatic mounting mechanism, feeding assembly and image monitoring mechanism, to realize the precise positioning of the midframe and automatic mounting of bulk material.
Through the automated process, high-precision bulk material mounting of the frame in the mobile phone is achieved, production efficiency and quality stability are improved, and the needs of large-scale automated production are met.
Smart Images

Figure CN222569793U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bulk material mounting of mobile phones, in particular to a bulk material mounting machine for a mobile phone middle frame. Background Art
[0002] With the rapid development of the electronic product manufacturing industry, especially the increasing demand for refined and large-scale production in the mobile phone industry, higher requirements are placed on the mounting accuracy and efficiency of the middle frame and various bulk materials in the mobile phone assembly process. The mounting process of the mobile phone middle frame and bulk materials such as buffer pads and damping sheets on the existing mobile phone production line is done manually, which often has problems such as large manual operation errors, low efficiency, and unstable quality, making it difficult to meet the growing demand for large-scale automated production. Utility Model Content
[0003] In order to solve the problems in the above-mentioned background technology, the utility model provides a mobile phone middle frame bulk material mounting machine.
[0004] The solution adopted by the utility model to solve its technical problems is: a mobile phone middle frame bulk material mounting machine, including a workbench and a conveyor belt arranged on the end surface of the workbench, the conveyor belt is provided with an entrance part, a mounting station part and an exit part in sequence along the mounting direction, the end surface of the mounting station part is provided with an induction positioning mechanism for positioning the middle frame, the surrounding side of the mounting station part is also provided with a plurality of feeding mechanisms for storing bulk materials and automatically discharging materials, and an automatic mounting mechanism for sucking bulk materials and cooperating with the induction positioning mechanism to mount them into the middle frame, the top of the workbench is also provided with a camera monitoring mechanism, and conveying mechanisms for feeding and discharging materials are provided on both sides of the conveyor belt.
[0005] By adopting the above technical scheme, the mobile phone middle frame to be mounted enters from the entrance of the conveyor belt and is transported to the mounting station where it is positioned by the induction positioning mechanism and waits for mounting. The automatic mounting mechanism on the workbench can absorb the bulk material in the feeding mechanism and then cooperate with the camera detection mechanism above to mount the middle frame in positioning, thereby completing high-precision and automatic mounting of bulk materials on the mobile phone middle frame.
[0006] Furthermore, the inductive positioning mechanism includes inductive components fixedly mounted on both sides of the mounting station portion and a lifting and pressing assembly disposed at one end of the inductive component close to the entrance portion, and the inductive component is electrically connected to the lifting and pressing assembly.
[0007] By adopting the above technical solution, the sensors fixedly installed on both sides of the mounting station can sense the middle frame of the mobile phone in time when the middle frame enters the mounting station to ensure that it is in the mounting area and transmit control signals to the lifting and pressing components to position the middle frame of the mobile phone, providing a stable mounting reference for the automatic mounting mechanism.
[0008] Furthermore, the lifting and pressing assembly includes two first lifting cylinders and lifting and pressing plates fixedly arranged on both sides of the mounting station portion, and the two sides of the bottom of the lifting and pressing plate are fixedly connected to the top lifting rods of the two first lifting cylinders.
[0009] By adopting the above technical solution, when the middle frame needs to be positioned, the first lifting cylinders on both sides can act simultaneously to make the lifting and lowering plates descend smoothly and press the middle frame to be positioned.
[0010] Furthermore, the feeding assembly includes a vibrating hopper fixedly mounted on the end surface of the workbench and a material placing trough disposed on one side of the vibrating hopper outlet.
[0011] By adopting the above technical solution, the vibrating hopper is installed on the end face of the workbench. Through the principle of vibration, the bulk material storage area can flow to the discharge port and enter the material trough. The automatic mounting mechanism can absorb the bulk material in the material trough and mount it to the middle frame of the mobile phone with the cooperation of the camera detection mechanism.
[0012] Furthermore, the automatic placement mechanism includes an electric control console fixed on the end surface of the workbench, a mechanical rotating arm connected to the electric control console for rotating from a material placement slot to a placement station, and a working component arranged under the mechanical rotating arm for placing bulk materials into the middle frame.
[0013] By adopting the above technical solution, the electronic control console, as the core control system of the automatic placement mechanism, can accurately control the mechanical rotating arm to rotate between the material trough and the placement station according to the preset program instructions, and the working component grabs the bulk material in the material trough and rotates it to the placement station for placement.
[0014] Furthermore, the working assembly includes a connecting rod inserted under the mechanical rotating arm, a plurality of second lifting cylinders arranged around the connecting rod, and a vacuum suction head fixedly connected to the lifting rod at the bottom of the second lifting cylinder.
[0015] By adopting the above technical solution, the extension and retraction of the second lifting cylinder can be controlled to accurately adjust the vertical direction of the vacuum suction head. The vacuum suction head sucks the bulk material from the material trough. Through the control of the lifting cylinder, the bulk material can be accurately mounted to the preset position of the middle frame, thereby completing the mounting work on the middle frame of the mobile phone.
[0016] Furthermore, the camera monitoring mechanism includes a frame mounted on the end surface of the workbench, a first monitoring component arranged on the top of the frame for detecting the material trough, and a second detection component arranged on the top of the frame for detecting the mounting station.
[0017] By adopting the above technical solution, the first monitoring component is used to monitor the bulk material status in the material trough. When the bulk material in the material trough is insufficient, a signal can be transmitted to the vibrating hopper to vibrate the material. The second detection component is used to observe in real time whether the bulk material is accurately installed in the preset position of the middle frame during the mounting process.
[0018] Furthermore, a centering shaping component is provided on both the entrance and the exit, and the centering shaping component includes two limit rods arranged in parallel on both sides of the end surface of the conveyor belt, and a limit channel adapted to the width of the middle frame is formed between the two limit rods, and flaring parts are also provided at both ends of the limit channel.
[0019] By adopting the above technical solution, the middle frame first enters from the flared part and gradually narrows, which helps the middle frame entering the conveyor belt to complete automatic centering and shaping, ensuring that the middle frame always remains in the correct position during transportation to avoid deviation or misalignment.
[0020] Furthermore, the conveying mechanism includes mounting frames respectively mounted on the entrance and exit portions, and a slide rail is horizontally provided on the mounting frame near the mounting station portion. A sliding member that can slide along the X-axis is slidably arranged on the slide rail, and a driving motor for driving the sliding member to slide is fixedly arranged, and a third lifting cylinder is fixedly arranged on the sliding member, and a lifting rod at the bottom of the third lifting cylinder is fixedly connected to a vacuum adsorption member for adsorbing the middle frame.
[0021] By adopting the above technical solution, the driving motor controls and drives the sliding part to slide along the slide rail on the X-axis to realize the precise horizontal movement of the middle frame. The lifting electric cylinder fixed on the sliding part can be extended and retracted in the vertical direction, thereby driving the vacuum adsorption part to rise and fall, and the middle frame can be grabbed or placed at different heights.
[0022] In summary, the beneficial effects of the utility model are:
[0023] 1. The utility model ensures that the middle frame is accurately positioned at the mounting station by means of an induction positioning mechanism jointly formed by an induction component and a lifting and pressing component, and then cooperates with an automatic mounting mechanism and a second detection component on the top to complete high-precision bulk material mounting on the mobile phone middle frame, ensuring that the bulk material can be accurately mounted to the preset position of the middle frame.
[0024] 2. The utility model realizes the automation of the whole process of conveying, positioning, feeding, mounting and discharging of the mobile phone middle frame through the coordinated work of the automatic mounting mechanism, the feeding component, the conveying mechanism and the camera monitoring mechanism.
[0025] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 Schematic diagram of the overall structure of this embodiment;
[0027] Figure 2 This is a schematic diagram of the mounting station portion of this embodiment;
[0028] Figure 3 Schematic diagram of the automatic placement mechanism of this embodiment;
[0029] Figure 4 Schematic diagram of the feeding mechanism of this embodiment;
[0030] Figure 5 Schematic diagram of the conveying mechanism of this embodiment.
[0031] In the figure: 1, workbench; 2, conveyor belt; 21, entrance; 22, mounting station; 23, exit; 3, induction positioning mechanism; 31, induction element; 32, lifting and pressing assembly; 321, first lifting cylinder; 322, lifting and pressing plate; 4, feeding mechanism; 41, vibrating hopper; 42, material trough; 5, automatic mounting mechanism; 51, electric control console; 52, mechanical rotating arm; 53, working assembly; 531, connecting rod; 53 2. Second lifting cylinder; 533. Vacuum suction head; 6. Camera detection mechanism; 61. Frame; 62. First monitoring component; 63. Second detection component; 7. Conveying mechanism; 71. Mounting frame; 72. Slide rail; 73. Sliding part; 74. Driving motor; 75. Third lifting cylinder; 76. Vacuum suction part; 8. Centering shaping component; 81. Limit rod; 82. Limit channel; 83. Expanding part; 9. Middle frame; 10. Bulk material. DETAILED DESCRIPTION
[0032] In order to make the content of the utility model more clearly understood, the utility model is further described below based on specific embodiments in combination with the accompanying drawings.
[0033] It should be noted that the terms "center", "upper", "lower", "front", "back", "left", "right", "inner", "outer" and the like used herein to indicate directions or positional relationships are based on directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. Unless otherwise specified, "plurality" means two or more.
[0034] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it 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 a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood by specific circumstances.
[0035] like Figures 1 to 5 As shown, a mobile phone middle frame bulk material mounting machine is used to mount bulk materials 10 such as buffer pads to corresponding positions of the mobile phone middle frame 9; wherein this embodiment includes a workbench 1 and a conveyor belt 2 arranged on the end surface of the workbench 1, a power supply component, a control circuit and control components such as PLC are arranged inside the workbench 1, and the conveyor belt 2 is sequentially provided with an entrance portion 21, a mounting station portion 22 and an exit portion 23 along the mounting direction, and an induction positioning mechanism 3 for positioning the middle frame 9 is provided on the end surface of the mounting station portion 22, and a plurality of feeding mechanisms 4 for storing bulk materials 10 and automatically discharging the materials and an automatic mounting mechanism 5 for sucking the bulk materials 10 and cooperating with the induction positioning mechanism 3 to mount them into the middle frame 9 are also provided on the surrounding side of the mounting station portion 22, a video monitoring mechanism is also provided on the top of the workbench 1, and conveying mechanisms 7 for feeding and discharging the materials are also provided on both sides of the conveyor belt 2.
[0036] By installing a three-stage conveyor belt 2 on the end face of the workbench 1, which is driven by three driving motors 74 respectively, the mobile phone middle frame 9 can enter from the entrance part 21 in sequence, and the induction positioning mechanism 3 can accurately sense and identify and position the middle frame 9 through the mounting station part 22, ensuring that each mounting operation is carried out at the preset position, improving the accuracy and consistency of assembly. Multiple feeding mechanisms 4 configured on the periphery can store various types of bulk materials 10 to be mounted, and the automatic mounting mechanism 5 absorbs the bulk materials 10 from the feeding mechanism 4, and accurately mounts the bulk materials 10 to the preset position of the middle frame 9 with the cooperation of the induction positioning mechanism 3. During the mounting process, there is a camera detection mechanism 6 on the top to monitor the entire mounting process in real time, timely discover and correct possible mounting deviations, and ensure the mounting quality of the bulk materials 10. Conveying mechanisms 7 are set at both ends of the conveyor belt 2, which can absorb the middle frame 9 of the upstream process and put it into the conveyor belt 2, and absorb the mounted middle frame 9 and place it in the next process, ensuring the continuity of the production line and effectively improving the overall production efficiency.
[0037] like Figure 2As shown, the induction positioning mechanism 3 of this embodiment includes an induction member 31 fixedly mounted on both sides of the mounting station 22 and a lifting and pressing assembly 32 arranged at one end of the induction member 31 close to the entrance 21, and the induction member 31 is electrically connected to the lifting and pressing assembly 32. By means of the induction members 31 fixedly mounted on both sides of the mounting station 22, when the middle frame 9 of the mobile phone enters the mounting station, the middle frame 9 can be sensed in time to ensure that it is in the mounting area and the corresponding signal is transmitted to the electrically connected lifting and pressing assembly 32 to position the middle frame 9 of the mobile phone, providing a stable mounting reference for the automatic mounting mechanism 5. The lifting and pressing assembly 32 is composed of two first lifting cylinders 321, which are electric cylinders, fixedly mounted on both sides of the mounting station 22 and a lifting and pressing plate 322 connected to the top lifting rod thereof. When the middle frame 9 needs to be positioned, the first lifting cylinders 321 on both sides will act synchronously, driving the lifting and pressing plate 322 to descend smoothly, and appropriately pressing the middle frame 9 to complete the positioning. Ensure that the middle frame 9 does not shift during the mounting process, and improve the mounting accuracy of the bulk material 10 of the mobile phone middle frame 9.
[0038] like Figure 4 As shown, the feeding assembly of this embodiment includes a vibrating hopper 41 fixed on the end surface of the workbench 1 and a material trough 42 arranged on one side of the outlet of the vibrating hopper 41. The vibrating hopper 41 is installed on the end surface of the workbench 1. Through the principle of vibration, the bulk material 10 storage area can flow to the discharge port and enter the material trough 42. The automatic mounting mechanism 5 can absorb the bulk material 10 in the material trough 42 and mount it to the mobile phone middle frame 9 in cooperation with the camera detection mechanism 6.
[0039] like Figure 3As shown, the automatic placement mechanism 5 of this embodiment includes an electric control console 51 fixed on the end surface of the workbench 1, a mechanical rotating arm 52 connected to the electric control console 51 for rotating from the material storage slot 42 to the placement station 22, and a working component 53 provided under the mechanical rotating arm 52 for placing the bulk material 10 into the middle frame 9. The electric control console 51 is the core control system of the automatic placement mechanism 5, and internally integrates a control unit, a servo drive system that can accurately control the rotation angle of the mechanical rotating arm 52, a control module of the lifting cylinder, and a control module of the vacuum generator; according to the preset program instructions, the mechanical rotating arm 52 can be accurately controlled to rotate between the material storage slot 42 and the placement station 22, and the working component 53 grabs the bulk material 10 in the material storage slot 42 and rotates it to the placement station 22 for placement. The working assembly 53 includes a connecting rod 531 inserted under the mechanical rotating arm 52, a plurality of second lifting cylinders 532 arranged around the connecting rod 531, and a vacuum suction head 533 fixedly connected to the lifting rod at the bottom of the second lifting cylinder 532, and a vacuum generator is provided on the top. The electric control console 51 controls the extension and contraction of the second lifting cylinder 532 to accurately adjust the vertical direction of the vacuum suction head 533. The suction head generates negative pressure through the vacuum generator, which can firmly absorb the bulk material 10 to be assembled in the material placement slot 42. Through the control of the lifting electric cylinder, the bulk material 10 can be accurately mounted on the preset position of the middle frame 9, completing the mounting work of the mobile phone middle frame 9.
[0040] like Figure 1 As shown, the video monitoring mechanism of this embodiment includes a frame 61 mounted on the end surface of the workbench 1, a first monitoring component 62 mounted on the top of the frame 61 for detecting the material trough 42, and a second detection component 63 mounted on the top of the frame 61 for detecting the mounting station 22. The frame 61 mounted on the end surface of the workbench 1 provides a stable support platform for the video monitoring mechanism. The first monitoring component 62 is arranged on the top of the frame 61 and points to the material trough 42. It is mainly used to monitor the status of the bulk material 10 in the material trough 42, such as the quantity and position of the bulk material 10. When the bulk material 10 in the material trough 42 is insufficient, a signal can be transmitted to the vibration hopper 41 to vibrate the material. The second detection component 63 is also arranged on the top of the frame 61, and its monitoring target is opposite to the mounting station 22, and is used to observe in real time whether the bulk material 10 is accurately installed on the preset position of the middle frame 9 during the mounting process.
[0041] like Figure 2As shown, the entrance 21 and the exit 23 of the conveyor belt 2 of this embodiment are both provided with a centering shaping assembly 8, and the centering shaping assembly 8 includes two limit rods 81 arranged in parallel on both sides of the end face of the conveyor belt 2, and a limit channel 82 adapted to the width of the middle frame 9 is formed between the two limit rods 81, and a flaring portion 83 is also provided at both ends of the limit channel 82. The two limit rods 81 arranged in parallel on both sides of the end face of the conveyor belt 2 form a limit channel 82 adapted to the width of the middle frame 9 of the mobile phone. The middle frame 9 first enters from the flaring portion 83 and gradually narrows, ensuring that the middle frame 9 always remains in the correct position during the conveying process to avoid displacement or misalignment. Help the middle frame 9 entering the conveyor belt 2 to complete automatic centering shaping. Adjustment blocks are provided on both sides, and an adjustment rod is threaded through the adjustment block. One end of the adjustment rod is fixedly connected to the limit rod 81, and the limit rod 81 can be moved by adjusting the adjustment rod to expand or narrow the limit channel 82 to adapt to the middle frames 9 of different models of mobile phones.
[0042] like Figure 5 As shown, the conveying mechanism 7 of this embodiment includes a mounting frame 71 respectively mounted on the entrance part 21 and the exit part 23, and a slide rail 72 is horizontally arranged on the mounting frame 71 near the mounting station part 22. A sliding member 73 that can slide along the slide rail 72 in the X-axis is slidably arranged on the slide rail 72, and a driving motor 74 for driving the sliding member 73 to slide is fixedly arranged. A third lifting cylinder 75 is fixedly arranged on the sliding member 73, and a vacuum adsorption member 76 for adsorbing the middle frame 9 is fixedly connected to the lifting rod at the bottom of the third lifting cylinder 75. The driving motor 74 controls and drives the sliding member 73 to slide along the slide rail 72 in the X-axis to realize the precise transfer of the middle frame 9 in the horizontal direction, and the lifting electric cylinder fixed on the sliding member 73 can be extended and retracted in the vertical direction, thereby driving the vacuum adsorption member 76 to lift and lower, and the middle frame 9 can be grabbed or placed at different heights, ensuring the automation level and overall flexibility of the conveying structure.
[0043] The working process of the bulk material 10 placement machine of this embodiment is as follows: the conveying mechanism 7 mounted on the entrance 21 can drive the sliding slide 73 to translate along the X-axis and the third lifting cylinder 75 to drive the vacuum adsorption member 76 to move up and down, and the middle frame 9 to be placed can be grabbed from the upstream process to the conveyor belt 2. After passing through the flaring portion 83, the middle frame 9 is guided to the limit rod 81 to form a limit channel 82, and the middle frame 9 is aligned in the center, and then transported from the entrance 21 to the placement station 22 by the conveyor belt 2. The sensing member 31 senses the middle frame 9 and controls the first lifting cylinder 321 to drive the lifting and lowering plate 322 to press down to position the middle frame 9. The automatic placement mechanism 5 is controlled by the electric control console 51. After receiving the command, the mechanical rotating arm 52 rotates to the material trough 42 to absorb the bulk material 10 and then transfers to the placement station 22 to cooperate with the second detection component 63 above to place the positioned middle frame 9. After the mounting is completed, the lifting and pressing plate 322 moves upward to cancel the positioning, and the conveyor belt 2 runs to transport the mounted middle frame 9 to the exit portion 23 and is transferred to the next process by the conveying mechanism 7.
[0044] In summary, the beneficial effects of this embodiment are as follows: this embodiment realizes the full process automation of the mobile phone middle frame 9 from conveying, positioning, feeding, mounting to discharging through the coordinated work of the automatic mounting mechanism 5, the feeding component, the conveying mechanism 7 and the camera monitoring mechanism. And the sensing positioning mechanism 3 composed of the sensing member 31 and the lifting and pressing component 32 ensures that the middle frame 9 is accurately positioned in the mounting station 22, and then cooperates with the automatic mounting mechanism 5 and the second top detection component 63 to complete the high-precision bulk material 10 mounting of the mobile phone middle frame 9, ensuring that the bulk material 10 can be accurately mounted to the preset position of the middle frame 9.
[0045] The embodiments described above are only preferred implementation modes of the present utility model and cannot be used to limit the protection scope of the present utility model. Any non-substantial changes and modifications made by technicians in this field on the basis of the utility model shall fall within the protection scope of the present utility model.
Claims
1. A mobile phone middle frame bulk material placement machine, characterized in that: It includes a workbench and a conveyor belt arranged on the end surface of the workbench, the conveyor belt is sequentially provided with an entrance part, a mounting station part and an exit part along the mounting direction, the end surface of the mounting station part is provided with an induction positioning mechanism for positioning the middle frame, the surrounding side of the mounting station part is also provided with a plurality of feeding mechanisms for storing bulk materials and automatically discharging the materials, and an automatic mounting mechanism for sucking the bulk materials and mounting them into the middle frame in cooperation with the induction positioning mechanism, the top of the workbench is also provided with a camera monitoring mechanism, and conveying mechanisms for feeding and discharging the materials are provided on both sides of the conveyor belt.
2. A mobile phone middle frame bulk material mounting machine according to claim 1, characterized in that: The induction positioning mechanism comprises induction parts fixedly mounted on both sides of the mounting station and a lifting and pressing assembly arranged at one end of the induction part close to the entrance part, and the induction part is electrically connected to the lifting and pressing assembly.
3. A mobile phone middle frame bulk material mounting machine according to claim 2, characterized in that: The lifting and pressing assembly includes two first lifting cylinders and a lifting and pressing plate fixedly arranged on both sides of the mounting station portion, and the bottom sides of the lifting and pressing plate are fixedly connected to the top lifting rods of the two first lifting cylinders.
4. A mobile phone middle frame bulk material mounting machine according to claim 3, characterized in that: The feeding mechanism comprises a vibrating hopper fixedly arranged on the end surface of the workbench and a material placing trough arranged on one side of the vibrating hopper outlet.
5. A mobile phone middle frame bulk material mounting machine according to claim 4, characterized in that: The automatic placement mechanism includes an electric control console fixed on the end surface of the workbench, a mechanical rotating arm connected to the electric control console for rotating from a material placement slot to a placement station, and a working component arranged under the mechanical rotating arm for placing bulk materials into a middle frame.
6. A mobile phone middle frame bulk material mounting machine according to claim 5, characterized in that: The working assembly includes a connecting rod inserted under the mechanical rotating arm, a plurality of second lifting cylinders arranged around the connecting rod, and a vacuum suction head fixedly connected to the lifting rod at the bottom of the second lifting cylinder.
7. A mobile phone middle frame bulk material mounting machine according to claim 6, characterized in that: The camera monitoring mechanism comprises a frame mounted on the end surface of the workbench, a first monitoring component arranged on the top of the frame for detecting the material placement slot, and a second detection component arranged on the top of the frame for detecting the mounting station.
8. A mobile phone middle frame bulk material mounting machine according to claim 7, characterized in that: A centering shaping component is provided on both the entrance and the exit, and the centering shaping component includes two limit rods arranged in parallel on both sides of the end surface of the conveyor belt, and a limit channel adapted to the width of the middle frame is formed between the two limit rods, and flaring parts are also provided at both ends of the limit channel.
9. A mobile phone middle frame bulk material mounting machine according to claim 8, characterized in that: The conveying mechanism includes mounting frames respectively mounted on the entrance and exit portions, wherein the mounting frame is laterally provided with a slide rail on one side close to the mounting station portion, a sliding member that can slide along the X-axis is slidably arranged on the slide rail, and a driving motor for driving the sliding member to slide is fixedly arranged, a third lifting cylinder is fixedly arranged on the sliding member, and a lifting rod at the bottom of the third lifting cylinder is fixedly connected with a vacuum adsorption member for adsorbing the middle frame.