Polishing device for mobile phone support machining

Abstract

The invention relates to the technical field of grinding devices, in particular to a grinding device for mobile phone support machining. Comprising a workbench, a fixed frame is fixedly connected to the workbench, and a sliding frame is slidably connected into the fixed frame; the connecting frame is slidably connected to the lower side of the sliding frame, the connecting frame is rotatably connected with a rotating sleeve, the rotating sleeve is in spline connection with a grinding sliding shell, and the grinding sliding shell is fixedly connected with a fixing ring; and the sliding rod is connected to the fixing ring in a sliding mode, a groove is formed in the sliding rod, a supporting frame is connected into the grinding sliding shell in a sliding mode, the supporting frame is fixedly connected with a limiting ring, and the groove in the sliding rod is matched with the limiting ring in an extrusion mode. Through the relative positions of the sliding rod and the limiting ring, the position and shape of a drilled hole in a bottom plate are detected, the bottom plate with the unqualified drilled hole specification is removed, only the bottom plate with the qualified drilled hole position and shape is polished, and it is guaranteed that the production quality of a mobile phone support is stable.

Description

Technical Field

[0001] The invention relates to the technical field of grinding devices, and in particular to a grinding device for processing a mobile phone bracket. Background Art

[0002] A mobile phone holder is a device used to fix mobile phones. It is widely used in various scenarios such as home, office and car, helping users free their hands when watching videos, navigating or making video calls. A mobile phone holder is usually composed of three parts: a base plate, a support rod and a support plate. In the production process of the mobile phone holder, after the injection molding of the base plate is completed, a drilling device is needed to drill holes in the base plate. After the drilling of the base plate is completed, a grinding device is needed to grind the edges of the drilled holes in the base plate to remove burrs and ensure surface smoothness, so as to facilitate the installation of bolts during the subsequent assembly of the mobile phone holder.

[0003] However, in the process of drilling holes in the base plate by the existing drilling device, the base plate is prone to positioning deviation or loose fixation, resulting in the deviation of the position of the drilled hole in the base plate, or the base plate will vibrate due to unstable fixation during the drilling process, resulting in irregular shape of the drilled hole in the base plate. The existing grinding device usually directly positions and grinds the drilled hole in the base plate. If the position of the drilled hole in the base plate deviates or the shape of the drilled hole is irregular, the position where the grinding device grinds the base plate will be misaligned with the edge of the drilled hole, resulting in uneven grinding of the edge of the drilled hole in the base plate, and the hole edge may be high or low, resulting in difficulty in aligning the bolt with the hole position during installation, or difficulty in the bolt passing through the hole smoothly, affecting the assembly efficiency of the mobile phone holder and reducing the production quality of the mobile phone holder.

[0004] In order to solve the above problems, a grinding device is needed that can effectively identify and deal with the position offset and shape irregularity problems that occur during the drilling process to ensure the accuracy and quality of the drilling. Summary of the invention

[0005] In view of the problem that the existing grinding device cannot identify the offset or irregular shape of the drilling position on the bottom plate, the present invention provides a grinding device for processing a mobile phone bracket.

[0006] The technical solution is: a grinding device for processing a mobile phone bracket, comprising: a workbench, a conveyor belt, a feeding mechanism and a discharging mechanism are arranged on the workbench, a fixed frame is fixedly connected to the workbench, and a sliding frame is slidably connected in the fixed frame; a connecting frame is slidably connected to the lower side of the sliding frame, the connecting frame is rotatably connected to two rotating sleeves, the rotating sleeve is splined with a grinding sliding shell, and the grinding sliding shell is fixedly connected to a fixed ring; a plurality of sliding rods are all slidably connected to the fixed ring, the sliding rods are provided with grooves, the grinding sliding shell is slidably connected to a support frame, and the support frame A spring is fixedly connected between the adjacent grinding sliding shells, the support frame is fixedly connected with a limit ring, the groove on the sliding rod is squeezed and matched with the limit ring, and the drilling of the base plate is detected according to the matching state of the grooves on the multiple sliding rods and the adjacent support frames; a power mechanism is arranged on the fixed frame, and is used to control the synchronous rotation of the two grinding sliding shells; a positioning mechanism is arranged at the lower part of the fixed frame, and is used to locate the detection position of the base plate; two sequence control mechanisms are respectively arranged on the two grinding sliding shells, and are used to control the sequence of the movement of the grinding sliding shell and the sliding rod.

[0007] As a preferred embodiment of the present invention, the groove on the sliding rod is in an isosceles trapezoidal shape, the length of the upper bottom of the groove on the sliding rod is equal to the radius difference between the inner and outer rings of the limiting ring, and the facing sides of the two polished sliding shells are in a truncated cone shape.

[0008] As a preferred embodiment of the present invention, the power mechanism includes: a first electric push rod, fixedly connected to the fixed frame, the telescopic end of the first electric push rod penetrates the fixed frame, and the telescopic end of the first electric push rod is fixedly connected to the sliding frame; a motor, fixedly connected to the connecting frame, the output shaft of the motor is fixedly connected with a transmission rod, the transmission rod is rotatably connected to the connecting frame, and the rotating sleeve and the transmission rod are transmitted by a belt and a pulley; two second electric push rods are both fixedly connected to the lower side of the connecting frame, the telescopic end of the second electric push rod is slidably connected to the adjacent grinding sliding shell through a U-shaped block, and the support frame is provided with a pressure sensing sheet that is extruded and matched with the adjacent grinding sliding shell; a grinding assembly is arranged on the connecting frame, and is used to grind the edges of the two inner holes in the bottom plate drilled hole.

[0009] As a preferred embodiment of the present invention, the grinding assembly includes: a rotating cylinder, rotatably connected to the connecting frame; two grinding heads, both of which are limitedly slidably connected in the rotating cylinder, a spring is fixedly connected between the two grinding heads, and a spring is fixedly connected between the fixing ring and the sliding rod thereon.

[0010] As a preferred embodiment of the present invention, the positioning mechanism includes: mirror-imaged inclined rods, which are commonly fixed to the lower part of the fixed frame; mirror-imaged extrusion rods, which are commonly slidably connected to the connecting frame, and a spring is fixed between the extrusion rods and the connecting frame. The inclined rods guide the base plate, and the extrusion rods limit the base plate, so that the predetermined drilling position of the base plate is moved to directly below the connecting frame; a centering assembly is arranged on the connecting frame, which is used to control the axis of the fixing ring to coincide with the axis of the preset drilling hole of the base plate.

[0011] As a preferred embodiment of the present invention, the lower side of the extrusion rod is arranged as an inclined plate, and the distance between the two inclined plates at the lower side of the extrusion rod gradually increases from top to bottom, so as to position the bottom plate.

[0012] As a preferred embodiment of the present invention, the centering assembly includes: a fixed bracket, fixedly connected to the connecting frame, and a pressure sensing sheet is arranged on the lower side of the fixed bracket; a hydraulic cylinder, fixedly connected to the extrusion rod on one side, the telescopic end of the hydraulic cylinder is fixedly connected to the extrusion rod on the other side, the hydraulic cylinder is connected with a liquid guide tube, and a liquid storage chamber is arranged at the lower part of the sliding frame, the liquid storage chamber is sealingly and slidably connected to the connecting frame, the liquid guide tube is connected with the liquid storage chamber, and the hydraulic cylinder, the liquid guide tube and the liquid storage chamber are all filled with hydraulic oil.

[0013] As a preferred embodiment of the present invention, the lower side of the fixed bracket is set as an arc plate, the distance between the highest point of the concave surface of the arc plate of the fixed bracket and the axis of the rotating sleeve in the vertical plane is the same as the relative movement distance of the sliding frame and the connecting frame, and the ratio of the movement distance of the telescopic end of the hydraulic cylinder to the movement distance of the connecting frame relative to the sliding frame is 2:1.

[0014] As a preferred embodiment of the present invention, the sequential control mechanism includes: a sliding support rod, which is slidably connected to the polishing sliding shell, a spring is fixedly connected between the polishing sliding shell and the sliding support rod thereon, and the sliding support rod is extruded and matched with the connecting frame; a connecting rope, one end of which is fixedly connected to the sliding support rod, and the connecting rope penetrates the polishing sliding shell and the supporting frame, and a rotating wheel for guiding the connecting rope is provided on the polishing sliding shell, and the multiple sliding rods on the fixed ring are commonly fixedly connected to the other end of the connecting rope, and the movement of the sliding support rod is used to control the synchronous movement or synchronous reset of the multiple sliding rods.

[0015] As a preferred embodiment of the present invention, it also includes: two locking mechanisms, respectively arranged in the two grinding sliding shells, for assisting in positioning the grinding position of the edge of the drilling hole in the base plate, the locking mechanism includes: a limit pin, slidably connected in the grinding sliding shell, a spring is fixedly connected between the limit pin and the grinding sliding shell, a blind hole is provided on the support frame, which is limitedly matched with the limit pin, and is used to lock the support frame; a sliding bent rod, slidably connected in the grinding sliding shell, the connecting rope is fixedly connected with a stopper, the stopper is extruded and matched with the sliding bent rod, and the sliding bent rod is connected to the limit pin by a pull rope.

[0016] Compared with the prior art, the present invention has the following advantages: 1. The present invention detects the position and shape of the drilled hole on the base plate through the relative position of the sliding rod and the limit ring, removes the base plate with substandard drilling specifications, and only grinds the base plate with qualified drilling position and shape, thereby ensuring the stable production quality of the mobile phone holder.

[0017] 2. The present invention guides and limits the bottom plate through the inclined rod and the extrusion rod in the positioning mechanism, and positions the preset drill holes of the bottom plate in combination with the relative movement of the sliding frame and the connecting frame, thereby ensuring the accuracy of the detection and grinding position of the device.

[0018] 3. The present invention controls the sliding rod to move only after entering the bottom plate drilled hole according to the mutual squeezing of the sliding rod and the connecting frame in the sequential control mechanism, so that the detection position of the device for different bottom plate drilled holes remains consistent.

[0019] 4. The present invention locks the support frame through the limit pin in the locking mechanism, and provides auxiliary support for both ends of the drilled hole on the bottom plate to prevent vibration during the drilling process of the bottom plate and ensure the uniformity of the grinding of the edge of the drilled hole on the bottom plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the parts of the fixed frame and the sliding frame of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the parts of the motor and the transmission rod of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the fixing bracket and the parts of the liquid storage chamber of the present invention; Figure 5 It is a cross-sectional view of the parts of the connecting frame and the rotating sleeve of the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the parts of the sliding support rod and the connecting rope of the present invention; Figure 7 It is a three-dimensional structural schematic diagram of the initial positions of the sliding rod and the limiting ring of the present invention; Figure 8 It is a three-dimensional structural schematic diagram of the parts of the extrusion rod and the hydraulic cylinder of the present invention; Fig. 9 It is a three-dimensional structural schematic diagram of the parts of the limit pin and the sliding bent rod of the present invention.

[0021] The markings of the components in the accompanying drawings are as follows: 1-workbench, 2-conveyor belt, 3-fixed frame, 4-sliding frame, 5-connecting frame, 6-rotating sleeve, 7-polishing sliding shell, 8-fixing ring, 9-sliding rod, 10-support frame, 11-limiting ring, 201-first electric push rod, 202-motor, 203-transmission rod, 204-second electric push rod, 301-rotating cylinder, 302-polishing head, 401-oblique rod, 402-extrusion rod, 501-fixed bracket, 502-hydraulic cylinder, 503-liquid guide tube, 504-liquid storage chamber, 601-sliding support rod, 602-connecting rope, 701-limiting pin, 702-sliding bent rod, 703-block. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1 -Attached Fig. 9 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0023] Example 1: If the existing drilling device has positioning deviation or vibration when drilling holes in the base plate, it will cause the drill holes on the base plate to be offset or have irregular shapes. The existing grinding device cannot accurately identify the problem of drilling holes in the base plate, and directly completes the grinding operation on the edges of the drill holes in the base plate, resulting in deviations in the degree of grinding of the edges of the drill holes in the base plate, affecting the stability of the subsequent bolt connections and reducing the production quality of the mobile phone holder.

[0024] A grinding device for processing a mobile phone bracket, please refer to Figure 1-Figure 7As shown, it includes: a workbench 1, on which a conveyor belt 2, a feeding mechanism and a discharging mechanism are arranged, a fixed frame 3 is fixedly connected to the workbench 1, and a sliding frame 4 is slidably connected in the fixed frame 3; a connecting frame 5 is slidably connected to the lower side of the sliding frame 4, and the connecting frame 5 is rotatably connected to two rotating sleeves 6, and the rotating sleeve 6 is spline-connected to a grinding sliding shell 7, and the grinding sliding shell 7 is fixedly connected to a fixed ring 8; a plurality of sliding rods 9 are all slidably connected to the fixed ring 8, and the sliding rods 9 are provided with grooves, and a supporting frame 10 is slidably connected in the grinding sliding shell 7, and a supporting frame 10 is fixedly connected to the adjacent grinding sliding shell 7. The spring, the support frame 10 is fixedly connected to the limit ring 11, the groove on the sliding rod 9 is squeezed and matched with the limit ring 11, and the bottom plate drilling is detected according to the matching state of the grooves on the multiple sliding rods 9 and the adjacent support frames 10; the power mechanism is arranged on the fixed frame 3, which is used to control the synchronous rotation of the two grinding sliding shells 7; the positioning mechanism is arranged at the lower part of the fixed frame 3, which is used to locate the detection position of the bottom plate; two sequential control mechanisms are respectively arranged on the two grinding sliding shells 7, which are used to control the order of the grinding sliding shell 7 and the sliding rod 9 to move successively, and the groove on the sliding rod 9 is an isosceles trapezoid, and the sliding rod 9 The length of the upper bottom of the upper groove is equal to the radius difference between the inner and outer circles of the limit ring 11. The facing sides of the two polished sliding shells 7 are truncated cones. The power mechanism includes: a first electric push rod 201, which is fixed to the fixed frame 3. The telescopic end of the first electric push rod 201 penetrates the fixed frame 3, and the telescopic end of the first electric push rod 201 is fixed to the sliding frame 4; a motor 202 is fixed to the connecting frame 5, and the output shaft of the motor 202 is fixed to a transmission rod 203, and the transmission rod 203 is rotatably connected to the connecting frame 5. The rotating sleeve 6 and the transmission rod 203 are driven by a belt and a pulley; two second electric push rods 204, both Fixed to the lower side of the connecting frame 5, the telescopic end of the second electric push rod 204 is slidably connected to the adjacent grinding sliding shell 7 through a U-shaped block, and a pressure sensing sheet that is squeezed and matched with the adjacent grinding sliding shell 7 is provided on the support frame 10; a grinding assembly is arranged on the connecting frame 5, and is used to grind the edges of the two inner holes in the bottom plate drilled hole, and the grinding assembly includes: a rotating cylinder 301, which is rotatably connected to the connecting frame 5; two grinding heads 302, both of which are limitedly slidably connected in the rotating cylinder 301, a spring is fixed between the two grinding heads 302, and a spring is fixed between the fixed ring 8 and the sliding rod 9 thereon.

[0025] In the above scheme, the problem that the grinding device cannot detect and deal with the qualification of the holes drilled in the base plate is solved. A control panel is arranged on the workbench 1. The power mechanism, grinding mechanism, feeding mechanism and discharging mechanism are all electrically connected to the control panel. The fixed frame 3 is located above the conveyor belt 2. The isosceles trapezoidal groove on the sliding rod 9 is composed of a plane and two inclined surfaces distributed in a mirror image. The size of the chamfer of the edge of the bottom plate drilling hole is controlled according to the moving distance of the grinding sliding shell 7. The elastic coefficient of the spring connected to the sliding rod 9 is greater than the elastic coefficient of the spring connected to the support frame 10, so that the sliding rod 9 can push the limit ring 11 through the inclined surface of its groove under the elastic force of the connected spring. The outer ends of multiple sliding rods 9 are all hemispherical, which is used to prevent the sliding rod 9 from causing scratches on the inside of the bottom plate drilling hole when rotating with the fixed ring 8, affecting the smoothness of the bolt installation when assembling the mobile phone holder. The groove plane on the sliding rod 9 and the end point on one side of its hemispherical The sum of the distance between them and the radius of the limiting ring 11 is equal to the radius of the preset drilling hole in the bottom plate. Only when the limiting ring 11 touches the plane of the groove on the sliding rod 9, multiple sliding rods 9 are in contact with the inner wall of the preset drilling hole in the bottom plate. Initially, the diameter of the circle where the outer ends of all sliding rods 9 on the same fixed ring 8 are located is smaller than the diameter of the drilling hole in the bottom plate. The spring connected to the sliding rod 9 is initially in a compressed state, and the spring connected to the support frame 10 is initially in a compressed state. The spacing between the pressure sensing sheet on the support frame 10 and the polished sliding shell 7 is equal to the depth of the groove of the sliding rod 9. Through the limiting cooperation between the groove on the sliding rod 9 and the support frame 10, the position and shape of the drilling hole in the bottom plate are detected to determine whether the drilling hole in the bottom plate is qualified, and the bottom plate is differentiated to ensure the stable production quality of the mobile phone holder. The opposite ends of the two grinding heads 302 are set to a truncated cone. The shape and size of the truncated cone on the grinding head 302 are exactly the same as the shape and size of the truncated cone on the polishing sliding shell 7.

[0026] Workflow: First, the operator places the bottom plates with holes drilled on the conveyor belt 2 in sequence, and the bottom plates are evenly distributed on the conveyor belt 2. Then, the operator starts the feeding mechanism through the control panel, and the feeding mechanism drives the conveyor belt 2 to rotate clockwise (from front to back), and the conveyor belt 2 transports the bottom plates on it to the right. After being guided by the positioning mechanism, the bottom plates are centered in the front and back directions of the conveyor belt 2. When the drilled holes of the bottom plates move to the lower part of the fixed frame 3, the control panel closes the feeding mechanism, and at the same time, the control panel starts the first electric push rod 201, and the telescopic end of the first electric push rod 201 drives the sliding The frame 4 moves downward, and the grinding sliding shell 7 and the two grinding heads 302 are close to the drilling hole of the bottom plate. The positioning mechanism moves the position of the bottom plate, so that the preset drilling hole of the bottom plate is moved to just below the connecting frame 5, and the positioning of the bottom plate is completed. In the process of the positioning mechanism moving the bottom plate, the positioning mechanism controls the connecting frame 5 to slide downward relative to the sliding frame 4. When the positioning mechanism contacts the bottom plate, the control panel closes the first electric push rod 201. At this time, the axis of the grinding sliding shell 7 coincides with the axis of the preset drilling hole of the bottom plate, completing the positioning of the preset drilling and grinding position of the bottom plate, and then the control panel starts the second electric push rod 204.

[0027] During the downward movement of the sliding frame 4, the connecting frame 5 drives the two grinding heads 302 to move downward synchronously through the rotating cylinder 301, the truncated cone-shaped inclined surface on the grinding head 302 squeezes the bottom plate, the two grinding heads 302 approach each other, the spring between the two grinding heads 302 is compressed, and the grinding head 302 moves into the rotating cylinder 301. When the grinding sliding shell 7 completes the positioning of the preset drilling and grinding position of the bottom plate, the grinding head 302 synchronously completes the positioning of the preset drilling and grinding position of the bottom plate, and the two grinding heads 302 move away from each other under the elastic force of the connected springs, and the grinding head 302 is inserted into the drilled hole of the bottom plate.

[0028] When the second electric push rod 204 is started, the telescopic end of the second electric push rod 204 contracts. Taking the polishing sliding shell 7 on the rear side as an example, the telescopic end of the second electric push rod 204 drives the polishing sliding shell 7 to move forward through the U-shaped block, and the two polishing sliding shells 7 approach each other. The polishing sliding shell 7 drives the fixing ring 8 to enter the bottom plate drilling hole, and the control panel closes the second electric push rod 204. At the same time, the sequential control mechanism releases the pulling force on the multiple sliding rods 9. The multiple sliding rods 9 move under the elastic force of the connected springs, and the multiple sliding rods 9 move away from each other. The hemispherical end of the sliding rod 9 stops moving after contacting the inner wall surface of the drilling hole. If the moving distances of the multiple sliding rods 9 on the fixing ring 8 are exactly the same, at this time, the grooves of the multiple sliding rods 9 are aligned with the limit ring 11. The support frame 10 drives the limit ring 11 to move forward under the elastic force of the connected spring, and the limit ring 11 is inserted into the grooves of the multiple sliding rods 9. The limit ring 11 fits with the plane of the grooves of the sliding rods 9. At this time, the pressure sensing sheet on the support frame 10 contacts and squeezes the polished sliding shell 7, and the pressure sensing sheet feeds back a signal to the control panel, indicating that the drilling hole of the base plate has not been offset or irregular in shape (that is, the drilling hole of the base plate completely coincides with the preset drilling hole of the base plate, and the drilling hole of the base plate is in a qualified state). Then the control panel starts the motor 202 and the second electric push rod 204, and the output shaft of the motor 202 drives the transmission rod 203 to rotate, and the transmission rod 203 drives the rotating sleeve 6 and the rotating cylinder 301 to rotate synchronously through the belt and the pulley.

[0029] During the rotation of the transmission rod 203, the grinding sliding shell 7 and the grinding head 302 rotate synchronously, and the telescopic end of the second electric push rod 204 continues to drive the grinding sliding shell 7 to move forward through the U-shaped block, and the grinding sliding shell 7 gradually grinds the edge of the bottom plate drilled hole. The grinding sliding shell 7 and the grinding head 302 gradually move into the bottom plate drilled hole in the process of grinding the edge of the bottom plate drilled hole. When the grinding sliding shell 7 and the grinding head 302 move to the limit, the drilling edge of the bottom plate is polished. At this time, the control panel turns off the motor 202 and the second electric push rod 204, and then the control panel starts the second electric push rod 204. The telescopic end of the second electric push rod 204 extends out and drives the grinding sliding shell 7 to move and reset. At the same time, the sequential control mechanism controls multiple sliding rods 9 to move and reset, and the sliding rods 9 compress and The spring connected to it and the groove of the sliding rod 9 squeeze the limiting ring 11 close to the inclined surface on the outside of the fixed ring 8. The limiting ring 11 moves out of the groove of the sliding rod 9 and drives the support frame 10 to move and reset. The support frame 10 compresses the spring connected to it. When the polished sliding shell 7 moves and resets, the control panel closes the second electric push rod 204, and then the control panel controls the telescopic end of the first electric push rod 201 to shrink and drive the sliding frame 4 to move and reset. The positioning mechanism releases the fixation of the bottom plate. At this point, the polishing of the bottom plate is completed, and all parts in the device are restored to their initial positions. After that, the control panel controls the feeding mechanism to make the conveyor belt 2 continue to rotate, and transports the next bottom plate to the lower part of the fixed frame 3, and repeats the above-mentioned bottom plate polishing operation, so that the device can perform continuous bottom plate polishing operation.

[0030] If the pressure sensing plate on the support frame 10 is not squeezed, it means that the limit ring 11 has not completely entered the groove of the sliding rod 9, the limit ring 11 is not in contact with the plane of the groove of the sliding rod 9, and the drilled hole of the bottom plate does not coincide with the preset drilled hole of the bottom plate. At this time, the motor 202 and the second electric push rod 204 are not started, and the reset operation of the sliding frame 4 is repeated. When the conveyor belt 2 transports the bottom plate to the right to the discharging mechanism, the control panel starts the discharging mechanism to push the unqualified bottom plate out of the conveyor belt 2, and the unqualified bottom plate is recovered. In the subsequent process, the above-mentioned detection and differentiation processing operations are repeated until all the bottom plates are processed, and the feeding mechanism is closed through the control panel, waiting for the next use.

[0031] Please refer to Figure 3 , Figure 4 and Figure 8 As shown, the positioning mechanism includes: mirror-image distributed inclined rods 401, which are fixed together at the lower part of the fixed frame 3; mirror-image distributed extrusion rods 402, which are slidably connected to the connecting frame 5 together, and a spring is fixed between the extrusion rod 402 and the connecting frame 5. The inclined rod 401 guides the bottom plate, and the extrusion rod 402 limits the bottom plate, so that the predetermined drilling position of the bottom plate is moved to the bottom of the connecting frame 5; a centering component is arranged on the connecting frame 5, which is used to control the axis of the fixing ring 8 to coincide with the axis of the preset drilling hole of the bottom plate, and the lower side of the extrusion rod 402 is set as an inclined plate, and the spacing between the inclined plates on the lower sides of the two extrusion rods 402 gradually increases from top to bottom, which is used to position the bottom plate. The centering component includes: a fixed bracket 501, which is fixed to the connecting frame 5, and the lower side of the fixed bracket 501 is set There is a pressure sensing sheet; a hydraulic cylinder 502, which is fixedly connected to the extrusion rod 402 on one side, and the telescopic end of the hydraulic cylinder 502 is fixedly connected to the extrusion rod 402 on the other side. The hydraulic cylinder 502 is connected with a liquid guide tube 503, and a liquid storage chamber 504 is arranged at the lower part of the sliding frame 4. The liquid storage chamber 504 is sealed and slidably connected with the connecting frame 5, and the liquid guide tube 503 is connected with the liquid storage chamber 504. The hydraulic cylinder 502, the liquid guide tube 503 and the liquid storage chamber 504 are all filled with hydraulic oil. The lower side of the fixed bracket 501 is arranged as an arc plate, and the spacing between the highest point of the concave surface of the arc plate of the fixed bracket 501 and the axis of the rotating sleeve 6 on the vertical plane is the same as the relative movement distance of the sliding frame 4 and the connecting frame 5. The ratio of the moving distance of the telescopic end of the hydraulic cylinder 502 to the moving distance of the connecting frame 5 relative to the sliding frame 4 is 2:1.

[0032] In the above scheme, the center position of the preset drilling hole of the bottom plate is located according to the specifications of the drilling hole of the bottom plate, so as to detect whether the drilling hole of the bottom plate is offset or whether the drilling hole shape is irregular. Two inclined rods 401 are fixedly connected to the lower part of the fixed frame 3. The inclined rods 401 guide the moving bottom plate so that the bottom plate is centered in the front and rear directions of the conveyor belt 2. The inclined rods 401 limit the bottom plate in the vertical direction to prevent the grinding head 302 from moving upward when it is separated from the bottom plate. Initially, the two extrusion rods 402 are in contact with each other, and the fixed bracket 501 fixes the bottom plate. Half of the distance between the two extrusion rods 402 is the relative movement distance of the sliding frame 4 and the connecting frame 5, half of the change in the spacing between the two extrusion rods 402 is equal to the distance from the preset drilling center of the bottom plate to the highest point of the bottom plate, and the two extrusion rods 402 fix the bottom plate in the left and right directions to complete the centering state of the bottom plate drilling axis in the left and right directions (the axis of the bottom plate drilling is located directly below the axes of the two grinding sliding shells 7), and the bottom plate drilling position is positioned by the inclined rod 401 and the extrusion rod 402. Combined with the fixation of the fixed bracket 501, the bottom plate drilling edge remains stable during the grinding process, thereby ensuring the uniformity of the bottom plate drilling edge grinded by the device.

[0033] Working process: After the feeding device is started, the conveyor belt 2 rotates to transport the bottom plate to the right, and the two inclined rods 401 at the bottom of the fixed frame 3 guide the bottom plate to make the bottom plate centered in the front-rear direction of the conveyor belt 2. Then, when the drilling part of the bottom plate moves to the bottom of the fixed frame 3, the control panel closes the feeding device, and the first electric push rod 201 is started. During the downward movement of the sliding frame 4, the inclined plate part of the squeezing rod 402 first contacts and squeezes the drilling part of the bottom plate, and the bottom plate moves. As the sliding frame 4 moves downward, the two squeezing rods 402 squeeze the bottom plate and move away from each other. The squeezing rod 402 compresses the spring connected to it, and the telescopic end of the hydraulic cylinder 502 When the fixing bracket 501 is pulled out, the hydraulic oil in the hydraulic cylinder 502 enters the liquid storage chamber 504 through the liquid guide tube 503, and the hydraulic oil in the liquid storage chamber 504 pushes the connecting frame 5 to move downward relative to the sliding frame 4. The distance between the highest point of the concave surface on the lower side of the fixed bracket 501 and the projection of the axis of the grinding sliding shell 7 on the vertical plane increases. When the fixed bracket 501 contacts and squeezes the bottom plate, the pressure sensing piece on the concave surface on the lower side of the fixed bracket 501 is compressed and feedbacks a signal to the control panel. The control panel closes the first electric push rod 201, and the positioning of the preset drilling hole of the bottom plate is completed. At the same time, the axis of the grinding sliding shell 7 coincides with the axis of the preset drilling hole of the bottom plate, and then the above-mentioned bottom plate drilling detection and grinding operations are repeated.

[0034] When the drilling and grinding of the bottom plate is completed or the inspection is completed, the parts at the grinding slide shell 7 are reset as mentioned above, the telescopic end of the first electric push rod 201 contracts and drives the sliding frame 4 to move upward, the inclined rod 401 limits the bottom plate, so that the bottom plate and the conveyor belt 2 remain in contact, and the pressure sensing sheet on the fixed bracket 501 loses contact with the bottom plate. Finally, the extrusion rod 402 loses contact with the bottom plate, and the extrusion rod 402 moves and resets under the elastic force of the connected spring, the telescopic end of the hydraulic cylinder 502 contracts, the hydraulic oil in the liquid guide tube 503 flows in the opposite direction, the hydraulic oil in the liquid storage chamber 504 is reduced, the connecting frame 5 moves and restores its initial relative position with the sliding frame 4, and when the sliding frame 4 returns to its initial position, the first electric push rod 201 is closed, and all parts are restored to their initial positions.

[0035] Please refer to Figure 4-Figure 7 As shown, the sequential control mechanism includes: a sliding support rod 601, which is slidably connected to the grinding sliding shell 7, a spring is fixed between the grinding sliding shell 7 and the sliding support rod 601 thereon, and the sliding support rod 601 is squeezed and matched with the connecting frame 5; a connecting rope 602, one end of which is fixedly connected to the sliding support rod 601, and the connecting rope 602 penetrates the grinding sliding shell 7 and the supporting frame 10. A rotating wheel for guiding the connecting rope 602 is provided on the grinding sliding shell 7, and multiple sliding rods 9 on the fixed ring 8 are fixedly connected to the other end of the connecting rope 602. Through the movement of the sliding support rod 601, the multiple sliding rods 9 are controlled to move or reset synchronously.

[0036] In the above scheme, the purpose is to control the sliding rod 9 to move after the polished sliding shell 7 and the fixed ring 8 drive it to enter the bottom plate drilling hole, so that the device can accurately locate and detect the inner wall of the bottom plate drilling hole, so as to achieve the purpose of detecting the position and shape of the bottom plate drilling hole. The elastic coefficient of the spring connected to the sliding support rod 601 is greater than the elastic coefficient of the spring connected to the sliding rod 9. Initially, the horizontal distance between the sliding support rod 601 and the connecting frame 5 is equal to the horizontal distance between the fixed ring 8 and the edge of the bottom plate drilling hole. Through the mutual extrusion of the sliding support rod 601 and the connecting frame 5, multiple sliding rods 9 enter the bottom plate drilling hole and then expand circumferentially.

[0037] Working process: when the telescopic end of the second electric push rod 204 contracts, the telescopic end of the second electric push rod 204 drives the grinding sliding shell 7 to move synchronously, and the two grinding sliding shells 7 approach each other. The grinding sliding shell 7 drives the sliding rod 9 to move toward the bottom plate drilling hole through the fixed ring 8. When the sliding support rod 601 contacts the connecting frame 5, the fixed ring 8 drives the sliding rod 9 to move into the bottom plate drilling hole. As the grinding sliding shell 7 moves, the sliding support rod 601 squeezes the connecting frame 5, and the sliding support rod 601 and the grinding sliding shell 7 slide with each other. The sliding support rod 601 compresses the connected spring, and the connecting rope 602 relaxes. Multiple sliding rods 9 move away from each other under the elastic force of the connected springs. The sliding rod 9 moves to contact the inner wall surface of the bottom plate drilling hole, and the limit ring 11 is matched with the groove of the sliding rod 9 according to the matching The device is closed to detect the drilling of the bottom plate. When the drilling detection or grinding is completed by the device, the control panel restarts the second electric push rod 204. The telescopic end of the second electric push rod 204 extends out and drives the grinding sliding shell 7 to move and reset. The sliding support rod 601 loses contact with the connecting frame 5 as the grinding sliding shell 7 moves. The sliding support rod 601 moves under the elastic force of the connected spring. The sliding support rod 601 pulls the multiple sliding rods 9 to reset through the connecting rope 602. The sliding rod 9 compresses the connected spring. When the grinding sliding shell 7 moves and resets, the control panel closes the second electric push rod 204, and the parts at the sliding rod 9 return to their initial positions. Repeat the above-mentioned reset operation of the sliding frame 4 movement. When the first electric push rod 201 is closed, all parts return to their initial positions.

[0038] Example 2: Based on Example 1, please refer to Figure 6 and Fig. 9 As shown, it also includes: two locking mechanisms, which are respectively arranged in the two grinding sliding shells 7, and are used to assist in positioning the grinding position of the edge of the bottom plate drilling hole. The locking mechanism includes: a limit pin 701, which is slidably connected in the grinding sliding shell 7, and a spring is fixedly connected between the limit pin 701 and the grinding sliding shell 7. A blind hole that is limited by the limit pin 701 is provided on the support frame 10, which is used to lock the support frame 10; a sliding bent rod 702, which is slidably connected in the grinding sliding shell 7, and a stopper 703 is fixedly connected to the connecting rope 602. The stopper 703 is squeezed and matched with the sliding bent rod 702, and the sliding bent rod 702 is connected to the limit pin 701 through a pull rope.

[0039] In the above scheme, it is intended to further ensure the stability of the bottom plate itself when the grinding sliding shell 7 grinds the edge of the bottom plate drilling hole, prevent the vibration of the bottom plate when the grinding sliding shell 7 grinds the bottom plate, and cause the grinding position of the bottom plate drilling hole to deviate, affecting the uniformity of grinding the edge of the bottom plate drilling hole. The spacing between the pressure sensing plate on the support frame 10 and the adjacent grinding sliding shell 7 is equal to the spacing between the limit pin 701 and the blind hole on the support frame 10. The limit pin 701 is cylindrical in shape, and the groove on the support frame 10 is cylindrical in shape, which is used to lock the support frame 10 with the limit pin 701, to ensure that when grinding the edge of the bottom plate drilling hole, the support frame 10 supports the bottom plate drilling hole through the limit ring 11 and the sliding rod 9, and the spring connected to the grinding sliding shell 7 is initially in a compressed state.

[0040] Working process: when the connecting rope 602 is loose, the sliding rod 9 moves and contacts the inner wall surface of the bottom plate drilling hole. If the bottom plate drilling hole is qualified, the limiting ring 11 is pushed into the groove of the sliding rod 9 by the support frame 10. The pressure sensing sheet on the support frame 10 contacts and squeezes the polished sliding shell 7. The limiting pin 701 is aligned with the blind hole on the support frame 10. The limiting pin 701 moves upward under the elastic force of the connected spring. The limiting pin 701 is inserted into the blind hole of the support frame 10, and the support frame 10 is locked. Subsequently, the motor 202 is started and the polishing operation of the edge of the bottom plate drilling hole is repeated. Since the support frame 10 is locked, the limiting ring 11 passes through the groove of the sliding rod 9, so that all the sliding rods 9 are relatively fixed to the fixing ring 8. The fixing rings 8 and sliding rods 9 on both sides of the bottom plate drilling hole further support and fix the bottom plate. When the grinding sliding shell 7 is grinding, it is ensured that the grinding sliding shell 7 is in uniform contact with the edge of the bottom plate drilling hole. After the bottom plate grinding is completed, when the telescopic end of the second electric push rod 204 drives the grinding sliding shell 7 to move and reset, the connecting rope 602 first pulls the sliding bent rod 702 through the block 703, and the sliding bent rod 702 pulls the limit pin 701 downward through the pull rope. The limit pin 701 compresses the connected spring, and the limit pin 701 moves out of the blind hole of the support frame 10. The lock of the support frame 10 is released, and then the above-mentioned reset operation of the grinding sliding shell 7 and the sliding frame 4 is repeated until the parts used return to their initial positions.

[0041] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions in the specification are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A grinding device for processing a mobile phone bracket, characterized in that: include: A workbench (1), wherein a conveyor belt (2), a material feeding mechanism and a material discharging mechanism are arranged on the workbench (1); a fixed frame (3) is fixedly connected to the workbench (1), and a sliding frame (4) is slidably connected inside the fixed frame (3); A connecting frame (5) is slidably connected to the lower side of the sliding frame (4); the connecting frame (5) is rotatably connected to two rotating sleeves (6); the rotating sleeves (6) are spline-connected to a grinding sliding shell (7); and the grinding sliding shell (7) is fixedly connected to a fixing ring (8); A plurality of sliding rods (9) are all slidably connected to the fixing ring (8), the sliding rods (9) are provided with grooves, a support frame (10) is slidably connected inside the grinding sliding shell (7), a spring is fixedly connected between the support frame (10) and the adjacent grinding sliding shell (7), the support frame (10) is fixedly connected to a limiting ring (11), the grooves on the sliding rods (9) are squeezed and matched with the limiting ring (11), and the bottom plate drilling is detected according to the matching state of the grooves on the plurality of sliding rods (9) and the adjacent support frames (10); A power mechanism, arranged on the fixed frame (3), for controlling the two grinding slide shells (7) to rotate synchronously; A positioning mechanism, arranged at the lower part of the fixing frame (3), and used for positioning the detection position of the bottom plate; Two sequence control mechanisms are respectively arranged on the two grinding slide shells (7) and are used to control the sequence in which the grinding slide shells (7) and the sliding rods (9) move successively.

2. A grinding device for processing a mobile phone holder according to claim 1, characterized in that: The groove on the sliding rod (9) is in the shape of an isosceles trapezoid. The length of the upper bottom of the groove on the sliding rod (9) is equal to the radius difference between the inner and outer rings of the limiting ring (11). The facing sides of the two polished sliding shells (7) are in the shape of a truncated cone.

3. A grinding device for processing a mobile phone holder according to claim 1, characterized in that: The power mechanism comprises: A first electric push rod (201) is fixedly connected to the fixed frame (3), the telescopic end of the first electric push rod (201) penetrates the fixed frame (3), and the telescopic end of the first electric push rod (201) is fixedly connected to the sliding frame (4); The motor (202) is fixedly connected to the connecting frame (5); the output shaft of the motor (202) is fixedly connected to a transmission rod (203); the transmission rod (203) is rotatably connected to the connecting frame (5); the rotating sleeve (6) and the transmission rod (203) are driven by a belt and a pulley; Two second electric push rods (204) are fixedly connected to the lower side of the connecting frame (5); the telescopic ends of the second electric push rods (204) are slidably connected to the adjacent grinding slide shell (7) through a U-shaped block; the support frame (10) is provided with a pressure sensing sheet that is extruded and matched with the adjacent grinding slide shell (7); a grinding component is arranged on the connecting frame (5) and is used to grind the edges of the two inner holes in the bottom plate drilled hole.

4. A grinding device for processing a mobile phone holder according to claim 3, characterized in that: The grinding kit includes: A rotating cylinder (301) rotatably connected to the connecting frame (5); The two grinding heads (302) are both connected in a limited sliding manner in the rotating cylinder (301), a spring is fixedly connected between the two grinding heads (302), and a spring is fixedly connected between the fixing ring (8) and the sliding rod (9) thereon.

5. A grinding device for processing a mobile phone holder according to claim 4, characterized in that: The positioning mechanism comprises: The mirror-distributed inclined rods (401) are fixedly connected to the lower part of the fixed frame (3); The extrusion rods (402) are distributed in a mirror image and are slidably connected to the connecting frame (5). A spring is fixedly connected between the extrusion rods (402) and the connecting frame (5). The bottom plate is guided by the inclined rods (401) and the bottom plate is limited by the extrusion rods (402), so that the predetermined drilling position of the bottom plate is moved to directly below the connecting frame (5). A centering assembly is arranged on the connecting frame (5) and is used to control the axis of the fixing ring (8) to coincide with the axis of a preset drilling hole in the base plate.

6. A grinding device for processing a mobile phone holder according to claim 5, characterized in that: The lower side of the extrusion rod (402) is arranged as an inclined plate, and the distance between the two inclined plates at the lower side of the extrusion rod (402) gradually increases from top to bottom, so as to position the bottom plate.

7. A grinding device for processing a mobile phone holder according to claim 5, characterized in that: The centering assembly comprises: A fixed bracket (501) is fixedly connected to the connecting frame (5), and a pressure sensing sheet is provided on the lower side of the fixed bracket (501); A hydraulic cylinder (502) is fixedly connected to the extrusion rod (402) on one side, and a telescopic end of the hydraulic cylinder (502) is fixedly connected to the extrusion rod (402) on the other side. The hydraulic cylinder (502) is connected to a liquid guide tube (503). A liquid storage chamber (504) is provided at the lower part of the sliding frame (4). The liquid storage chamber (504) is sealed and slidably connected to the connecting frame (5). The liquid guide tube (503) is connected to the liquid storage chamber (504). The hydraulic cylinder (502), the liquid guide tube (503) and the liquid storage chamber (504) are all filled with hydraulic oil.

8. A grinding device for processing a mobile phone holder according to claim 7, characterized in that: The lower side of the fixed bracket (501) is arranged as an arc-shaped plate, the distance between the highest point of the concave surface of the arc-shaped plate of the fixed bracket (501) and the axis of the rotating sleeve (6) on the vertical plane is the same as the distance of relative movement of the sliding frame (4) and the connecting frame (5), and the ratio of the distance moved by the telescopic end of the hydraulic cylinder (502) to the distance moved by the connecting frame (5) relative to the sliding frame (4) is 2:

1.

9. A grinding device for processing a mobile phone holder according to claim 8, characterized in that: The sequential control mechanism comprises: A sliding support rod (601) is slidably connected to the polishing sliding shell (7), a spring is fixedly connected between the polishing sliding shell (7) and the sliding support rod (601) thereon, and the sliding support rod (601) is extrusion-fitted with the connecting frame (5); A connecting rope (602) has one end fixedly connected to the sliding support rod (601), the connecting rope (602) penetrates the grinding sliding shell (7) and the supporting frame (10), the grinding sliding shell (7) is provided with a rotating wheel for guiding the connecting rope (602), and the plurality of sliding rods (9) on the fixing ring (8) are fixedly connected to the other end of the connecting rope (602), and the plurality of sliding rods (9) are controlled to move synchronously or reset synchronously by the movement of the sliding support rod (601).

10. A grinding device for processing a mobile phone holder according to claim 9, characterized in that: Also includes: Two locking mechanisms are respectively arranged in the two grinding slide shells (7) to assist in locating the grinding position of the edge of the bottom plate drilling hole, and the locking mechanisms include: A limit pin (701) is slidably connected in the polishing sliding shell (7), a spring is fixedly connected between the limit pin (701) and the polishing sliding shell (7), and a blind hole is provided on the support frame (10) for limiting the limit pin (701) and for locking the support frame (10); The sliding curved rod (702) is slidably connected in the polishing sliding shell (7); the connecting rope (602) is fixedly connected with a stopper (703); the stopper (703) is extruded and matched with the sliding curved rod (702); and the sliding curved rod (702) is connected to the limit pin (701) via a pull rope.

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