Fixing device and method for sound box vibrating diaphragm production

Abstract

The invention belongs to the technical field of loudspeaker box vibrating diaphragms, particularly relates to a fixing device and method for loudspeaker box vibrating diaphragm production, and aims to solve the problem that in the prior art, demolding efficiency is low due to the fact that a manipulator needs to be rearranged or a mold base needs to be manually taken out for tedious operation during demolding. Comprising a shaft rod supporting frame fixed to the position, close to the middle of the rear side, of the upper surface of the workbench, and the position, close to the top end, of the shaft rod supporting frame is rotationally connected with a main rotating shaft horizontally extending right ahead. When the arc-shaped stamping rod moves reversely after stamping is completed, the material returning mechanism is driven to move, at the moment, the material returning mechanism provides a high-pressure air source for the air channel in the die holder, and at the moment, a formed vibrating diaphragm obtained after hot press forming can be cooled in an accelerated mode and can be separated from the die groove under the action of high-speed air pressure to complete automatic demolding. And the action is smooth and coherent.

Description

Technical Field

[0001] The present invention relates to the technical field of speaker diaphragm production, and in particular to a fixing device and method for speaker diaphragm production. Background Art

[0002] A speaker is a device that can convert audio signals into sound. In layman's terms, it refers to a speaker box or a subwoofer box with a built-in power amplifier, which amplifies the audio signal and then plays it back by the speaker itself, making the sound louder. The speaker diaphragm is an indispensable key to the sound; there are many types of diaphragms, including paper diaphragms, wooden diaphragms, plastic diaphragms, metal diaphragms, biological diaphragms, etc.; generally, hot-pressed plastic diaphragms are used in medium and large speakers.

[0003] Hot pressing is a common process used in manufacturing speaker vibration membranes and other products. It involves heating plastic or other thermoplastic materials to an appropriate temperature to soften them, and then forming them into the desired shape through pressure; however, in the prior art, due to the thinness of the raw material sheet, a demoulding device and a matching fixing device need to be designed separately during hot pressing, which not only makes the surface equipment of the injection molding table cumbersome and inconvenient to operate, but also the forced demoulding from the outside is likely to cause the thin vibration membrane product to be torn. Therefore, we propose a new production equipment that integrates hot pressing and demoulding. Summary of the invention

[0004] In view of the technical problem in the prior art that demoulding requires re-equipping a manipulator or manually removing the mold base for cumbersome operations, resulting in low demoulding efficiency, the present invention adopts the following technical solutions: A fixing device for producing a speaker vibration membrane comprises a workbench with an opening downward and an overall long strip of trough steel structure, a hot pressing device is arranged near the rear side of the upper surface of the workbench, the hot pressing device comprises an axle rod support frame fixed to the upper surface of the workbench near the middle of the rear side, and the axle rod support frame is rotatably connected to a main rotating shaft extending horizontally toward the front near the top end, a folded spoke rod with an overall U-shaped structure is fixed to the front end of the main rotating shaft, and an arc-shaped stamping rod is fixed to the end of the folded spoke rod away from the main rotating shaft, and the rotation center of the arc-shaped stamping rod coincides with the axis line of the main rotating shaft; a mold base is fixed to the upper surface of the workbench near one end, and the longitudinal section of the mold base is a right-angled trapezoidal structure, and a plane slot is opened on the inclined surface of the mold base. A downwardly concave die groove is reserved at the bottom of the groove; an air duct running through the die base is opened in the center of the die groove; a hot press is fixed to the end of the arc-shaped punching rod close to the die base, and a die head block matched with the die base is provided at the working end of the hot press; when the arc-shaped punching rod rotates counterclockwise, it can drive the hot press and the die head block at its end to be pressed into the die groove, and then the raw material sheet placed on the plane slot can be hot-pressed into a required shape; a rectangular hole matched with the running track of the arc-shaped punching rod is opened at the end of the upper surface of the workbench away from the die base, and right-angle teeth are reserved at the end of the circumferential outer wall of the arc-shaped punching rod away from the hot press; and a material return mechanism is provided inside the workbench, and the material return mechanism is powered by the reverse operation of the right-angle teeth.

[0005] A further configuration of the present invention is that a discharge notch is opened in the middle of one end of the workbench close to the mold base, and a discharge guide plate for guiding the molded diaphragm to slide down is embedded in the discharge notch; by setting the discharge guide plate and cooperating with the stamping molding method on the inclined surface, the molded diaphragm can be quickly demolded after molding.

[0006] A further configuration of the present invention is that a horizontally placed support plate seat is fixed near the bottom end of the workbench, and the material unloading mechanism includes a piston barrel fixed on the support plate seat, a one-way air outlet valve is inserted into the barrel bottom of the piston barrel, and an air supply pipe is connected between the outlet of the one-way air outlet valve and the inlet of the airway, and an interface for connecting the air supply pipe is provided at the air inlet of the airway; and a strip-shaped through hole matching the diameter of the air supply pipe is opened on the workbench; a piston plate is slidably connected to the piston barrel, and a connecting rod is rotatably connected to the middle of the piston plate; a square hole is opened at the opening of the support plate seat near the piston barrel, and a rectangular barrel with an upward barrel-shaped structure is embedded in the square hole, and an axle rod frame is slidably connected to the top opening of the rectangular barrel, and the ... A bearing seat is embedded in the top of the rod frame; a compression spring is fixed between the bottom end of the shaft rod frame and the bottom of the rectangular barrel; a long rotating shaft is rotatably connected in the bearing seat, and a wheel disc and a one-way propulsion gear are respectively fixed to the front and rear ends of the long rotating shaft; the one-way propulsion gear and the right-angle teeth are meshed with each other, and the other end of the connecting rod is rotatably connected to the circumferential edge of the wheel disc; through the one-way propulsion gear pushed by the right-angle teeth, in conjunction with the compression spring at the bottom end of the shaft rod frame, when the arc-shaped stamping rod is stamped clockwise, the meshing right-angle teeth will press the one-way propulsion gear and the wheel disc to continuously press down without rotating, and when the arc-shaped stamping rod rotates in the opposite direction, that is, when demolding, the right-angle teeth can drive the one-way propulsion gear to rotate, that is, the material removal mechanism is started normally.

[0007] A further configuration of the present invention is that a card cover is fixed on the strip-shaped through hole, and the air supply pipe passes through the card cover; a handle is arranged on the top of the card cover; and the card cover and the handle can ensure that the air supply pipe is fixed to the rear side of the mold base.

[0008] A further configuration of the present invention is that a rocker arm is fixed to the rear end of the main shaft, the rocker arm is made of tough material, and a magnet bar with an arc-shaped structure is fixed to the bottom end of the rocker arm; a U-shaped frame is fixed to the rear side of the workbench below the magnet bar, and electromagnets are fixed at both ends of the U-shaped frame, and when the two electromagnets are energized, their opposite ends attract the two ends of the magnet bar; by setting the two electromagnets and the magnet bar at the bottom end of the rocker arm, it is only necessary to control the two electromagnets to be energized when the mold is required and when the mold is removed.

[0009] The present invention is further configured in that a feeding mechanism is arranged at one end of the upper surface of the workbench away from the mold base, and the feeding mechanism comprises two mutually parallel bearing frames fixed on the workbench, and a conveying pallet at the same level is fixed on the top of the bearing frames; mutually parallel conveying rollers 1 and 2 are arranged at the two ends of the conveying pallet, respectively, and a roller head frame for fixing the roller head of the conveying pallet is arranged at one end of the conveying pallet close to the conveying roller 2; and the same conveyor belt is wound between the circumferential outer walls of the conveying rollers 1 and 2; a belt groove is opened on the upper surface of the conveying pallet; and a conveyor belt is fixed at one end of the workbench close to the conveying roller 1. A roller bracket is provided to support the conveying roller 1; a driven pulley is fixed to one end of the conveying roller 2 close to the front of the device, and a motor mounting hole is opened on the upper surface of the workbench just below the driven pulley, a stepper motor is fixed to the top inner wall of the workbench close to the motor mounting hole, and a driving pulley is fixed to the top end of the output shaft of the stepper motor to form a transmission connection with the driven pulley, and a same driving belt is wound between the circumferential outer walls of the driving pulley and the driven pulley; by means of the provided conveying pallet and conveyor belt, the raw material sheets to be hot pressed can be quickly transported to the vicinity of the mold base for hot pressing processing to improve processing efficiency.

[0010] A further configuration of the present invention is that a control console is fixed on the front side of the workbench near the top, and a control switch for controlling the two electromagnets and the start of the stepper motor is provided on the control console; through the provided control console and control switch, the hot pressing process can be conveniently and accurately controlled in steps.

[0011] A further configuration of the present invention is that a baffle strip is fixed to one end of the upper surface of the conveying pallet close to the mold base, and the conveyor belt passing through the lower surface of the baffle strip can pass through the belt groove normally, but the raw material sheet above the conveyor belt is blocked in front of the baffle strip, which is convenient for static grasping, and can be loaded by a set robot or manually.

[0012] The present invention is further configured in that a vertically placed loading bucket is fixed on the upper surface of the conveying support plate at one end away from the baffle strip, and a discharge door is opened at the bottom of the loading bucket, and a gate knife is slidably connected to the front of the loading bucket, and vertical fixing blocks are fixed at both ends of the gate knife, and the tops of the two fixing blocks are fixed with tension spring springs, and the surface of the loading bucket is located on both sides of the discharge door, and C-shaped guide rails matching the outer diameter of the fixing block are respectively fixed, and the side of the loading bucket is located at the top of the C-shaped guide rail and a block is fixed; a stud rotating sleeve is fixed on the side of the loading bucket at the top of the gate knife, and an adjusting screw is screwed in the stud rotating sleeve; a circular hole is opened at the bottom of the belt groove, and an internal threaded tube is fixed at the lower mouth of the circular hole below the conveying support plate, and a threaded column is screwed in the internal threaded tube; it is used to assist in adjusting the size of the discharge gap; a through vertical groove is reserved on the back of the loading bucket for easy removal and placement of raw material sheets.

[0013] A method for producing a fixing device for a speaker diaphragm, comprising the following steps: Step 1: First, adjust the discharging speed and the number of sheets discharged each time of the loading barrel in the loading mechanism according to the processing speed. When adjusting, rotate the stud rotating sleeve so that the gap between the bottom end of the gate knife and the surface of the conveyor belt is adapted to the discharging speed; the gate knife moves downward to reduce the size of the gap, which reduces the number of sheets discharged each time, and vice versa, it increases the number of sheets discharged each time; Step 2: When the raw sheet is transferred to the plane slot, the arc punch rod and the hot press are started through the control console, that is, the corresponding electromagnet used to drive the magnet block to move is energized, and the arc punch rod drives the hot press to move toward the die slot until the raw sheet laid on the plane slot is pressed into the die slot and slowly formed; that is, the raw sheet starts to be hot-pressed, and after the hot-pressing is completed, another electromagnet is started, and the arc punch rod will rotate in the opposite direction as a whole; The compression spring at the bottom of the shaft frame will drive the one-way rotating gear to press tightly against the right-angle teeth, and then the one-way rotating gear will be rotated, and the airway will be inflated at high speed under the action of the connecting rod and the piston barrel. At this time, the molded diaphragm after hot pressing will not only be cooled faster, but also will be separated from the mold groove under the action of high-speed air pressure to complete automatic demolding; Step 3: The blown-out molded diaphragm will be discharged along the discharge guide plate.

[0014] The beneficial effects of the present invention are: 1. By setting the right-angle teeth, the material return mechanism can be driven to operate when the arc-shaped punch rod runs in the reverse direction after punching. At this time, the material return mechanism provides a high-pressure air source for the airway in the mold base. At this time, the molded diaphragm after hot pressing will not only be cooled faster, but also be separated from the mold groove under the action of high-speed air pressure to complete automatic demolding. The action is very smooth and continuous.

[0015] 2. By setting a one-way propulsion gear pushed by right-angle teeth and cooperating with the compression spring at the bottom of the shaft frame, when the arc-shaped punching rod punches clockwise, the meshing right-angle teeth will press the one-way propulsion gear and the wheel plate continuously downward without rotating. When the arc-shaped punching rod rotates in the opposite direction, that is, when demolding, the right-angle teeth can drive the one-way propulsion gear to rotate, and the material removal mechanism is started normally.

[0016] 3. Through the setting of the adjusting screw and the gate knife pulled by two tension springs, when it is necessary to adjust the number of raw material sheets coming out each time, it is only necessary to control the downward pressure of the adjusting screw. The greater the downward pressure, the fewer sheets will come out. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the rear structure of the present invention; Figure 3 is a side view of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the cross-sectional structure along line AA; Figure 5 It is a three-dimensional structural schematic diagram of the feeding mechanism in the present invention; Figure 6 It is a schematic diagram of the overall structure of the hot pressing device in the present invention; Figure 7 It is a schematic diagram of the assembly structure of the discharge baffle in the present invention; Figure 8 It is a schematic diagram of a half-cut three-dimensional structure of a mold base in the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the arc-shaped punching rod in the present invention; Fig.10 It is a schematic diagram of the assembly structure of the conveying pallet in the present invention; Fig.11 It is a three-dimensional structural schematic diagram of the material return mechanism in the present invention.

[0018] In the figure: 1. workbench; 101. motor mounting hole; 102. rectangular hole; 103. strip perforation; 2. driving pulley; 3. driving belt; 4. carrier; 5. roller bracket; 6. C-shaped guide rail; 7. loading barrel; 8. adjusting screw; 9. vertical groove; 10. conveyor plate; 1001. belt groove; 1002. round hole; 11. arc punching rod; 1101. right-angle teeth; 12. folded spoke rod; 121. main shaft; 13. shaft support; 14. hot press; 141. die block; 15. forming diaphragm; 16. die base; 161. flat slot; 162. airway; 163. die groove ;164, interface;17, discharge guide plate;18, control console;19, U-shaped frame;20, magnet strip;21, electromagnet;22, conveyor belt;23, support plate seat;24, one-way propulsion gear;25, shaft rod frame;26, wheel plate;27, rectangular barrel;28, piston barrel;29, air pipe;30, raw material sheet;31, conveyor roller one;32, threaded column;33, internal threaded pipe;34, stud rotating sleeve;341, stop block;342, tension spring;343, gate knife;344, fixed block;345, discharge door;35, baffle strip;36, roller head frame;37, conveyor roller two;38, stepper motor. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] In the present invention, reference is made to Figure 1-11 A fixing device for producing a speaker diaphragm comprises a workbench 1 with an opening downward and an overall long strip steel structure, a hot pressing device is arranged on the upper surface of the workbench 1 near the rear side, and the hot pressing device comprises an axle support frame 13 fixed to the middle of the upper surface of the workbench 1 near the rear side, and the axle support frame 13 is rotatably connected to a main shaft 121 extending horizontally forward near the top end, a folded spoke rod 12 with an overall U-shaped structure is fixed to the front end of the main shaft 121, and the same spoke rod 12 is fixed to the end of the folded spoke rod 12 away from the main shaft 121 A curved punching rod 11, the rotation center of the curved punching rod 11 coincides with the axis of the main rotating shaft 121; a die base 16 is fixed to the upper surface of the workbench 1 near one end, and the longitudinal section of the die base 16 is a right-angled trapezoidal structure, a plane slot 161 is opened on the inclined surface of the die base 16, and a downwardly concave die groove 163 is reserved at the bottom of the plane slot 161; an air channel 162 is opened in the center of the die groove 163 to penetrate the die base 16; a hot press 14 is fixed to one end of the curved punching rod 11 near the die base 16, and the working end of the hot press 14 is provided with a A die block 141 is provided which matches the die base 16; when the arc-shaped punching rod 11 rotates counterclockwise, it can drive the hot press 14 and the die block 141 at its end to be pressed into the die groove 163, and then the raw material sheet 30 placed on the plane slot 161 can be hot-pressed into a required shape; a rectangular hole 102 which matches the running track of the arc-shaped punching rod 11 is opened at one end of the upper surface of the workbench 1 away from the die base 16, and a right-angle tooth 1101 is reserved at one end of the circumferential outer wall of the arc-shaped punching rod 11 away from the hot press 14; and A material return mechanism is arranged inside the workbench 1, and the material return mechanism is powered by the reverse operation of the right-angle teeth 1101. The right-angle teeth 1101 can drive the material return mechanism to operate when the arc-shaped punching rod 11 runs in the reverse direction after completing the punching. At this time, the material return mechanism provides a high-pressure air source for the air channel 162 in the mold base 16. At this time, the molded diaphragm 15 after hot pressing will not only be cooled faster, but also will be separated from the mold groove 163 under the action of high-speed air pressure to complete automatic demolding. The action is completed in one go and is very smooth.

[0021] In the present invention, a discharge notch is provided in the middle of one end of the workbench 1 close to the mold base 16, and a discharge guide plate 17 is embedded in the discharge notch to guide the molded diaphragm 15 to slide down; by setting the discharge guide plate 17 and cooperating with the stamping molding method on the inclined surface, the molded diaphragm 15 can be quickly demolded after molding.

[0022] Please refer to Figure 6 , Figure 8-9 and Fig.11A horizontally placed support plate seat 23 is fixed near the bottom end of the workbench 1, and the material unloading mechanism includes a piston barrel 28 fixed on the support plate seat 23, a one-way air outlet valve is inserted into the bottom of the piston barrel 28, and an air supply pipe 29 is connected between the outlet of the one-way air outlet valve and the inlet of the airway 162, and an interface 164 for connecting the air supply pipe 29 is provided at the air inlet of the airway 162; and a strip-shaped through hole 103 matching the diameter of the air supply pipe 29 is opened on the workbench 1; a piston plate is slidably connected in the piston barrel 28, and a connecting rod is rotatably connected in the middle of the piston plate; a square hole is opened at the opening of the support plate seat 23 near the piston barrel 28, and a rectangular barrel 27 with an upward barrel-shaped structure is embedded in the square hole, and a shaft rod frame 25 is slidably connected to the top opening of the rectangular barrel 27, and a shaft rod frame 25 is embedded at the top of the shaft rod frame 25 The bearing seat; a compression spring is fixed between the bottom end of the shaft frame 25 and the bottom of the rectangular barrel 27; a long rotating shaft is rotatably connected in the bearing seat, and the front and rear ends of the long rotating shaft are respectively fixed with a wheel disc 26 and a one-way propulsion gear 24; the one-way propulsion gear 24 is meshed with the right-angle teeth 1101, and the other end of the connecting rod is rotatably connected to the circumferential edge of the wheel disc 26; the one-way propulsion gear 24 pushed by the right-angle teeth 1101 is arranged, and cooperates with the compression spring at the bottom end of the shaft frame 25. When the arc-shaped stamping rod 11 is stamped clockwise, the meshing right-angle teeth 1101 will press the one-way propulsion gear 24 and the wheel disc 26 to continuously press down without rotating, and when the arc-shaped stamping rod 11 rotates in the opposite direction, that is, when demolding, the right-angle teeth 1101 can drive the one-way propulsion gear 24 to rotate, that is, the material removal mechanism is normally started.

[0023] Please refer to Figure 1 and Figure 6 A card cover is fixed on the strip through hole 103, and the air supply pipe 29 passes through the card cover; a handle is provided on the top of the card cover; through the card cover and the handle, it can be ensured that the air supply pipe 29 is fixed on the rear side of the mold base 16.

[0024] Please refer to Figure 2 A swing rod is fixed at the rear end of the main shaft 121, the swing rod is made of tough material, and an arc-shaped magnet bar 20 is fixed at the bottom end of the swing rod; a U-shaped frame 19 is fixed on the rear side of the workbench 1 below the magnet bar 20, and electromagnets 21 are fixed at both ends of the U-shaped frame 19. When the two electromagnets 21 are energized, their opposite ends attract the two ends of the magnet bar 20; by setting the two electromagnets 21 and the magnet bar 20 at the bottom end of the swing rod, when the mold needs to be pressed and when the mold needs to be withdrawn, it is only necessary to control the two electromagnets 21 to be energized respectively.

[0025] Please refer to Figure 5 , Figure 7 and Fig.10A feeding mechanism is arranged at one end of the upper surface of the workbench 1 away from the die holder 16, and the feeding mechanism includes two mutually parallel carriers 4 fixed on the workbench 1, and a conveying pallet 10 of the same level is fixed on the top of the carrier 4; mutually parallel conveying rollers 1 31 and 37 are arranged at both ends of the conveying pallet 10, and a roller head frame 36 for fixing its roller head is arranged at one end of the conveying pallet 10 close to the conveying roller 2 37; and a same conveyor belt 22 is wound between the circumferential outer walls of the conveying rollers 1 31 and 37; a belt groove 1001 is opened on the upper surface of the conveying pallet 10; a conveyor belt 22 for supporting the conveying rollers 1 31 is fixed at one end of the workbench 1 close to the conveying roller 1 31 The roller bracket 5 of the conveying roller 1 31; a driven pulley is fixed to one end of the conveying roller 2 37 near the front of the device, and a motor mounting hole 101 is opened on the upper surface of the workbench 1 just below the driven pulley, a stepper motor 38 is fixed to the top inner wall of the workbench 1 near the motor mounting hole 101, and a driving pulley 2 is fixed to the top of the output shaft of the stepper motor 38 to form a transmission connection with the driven pulley, and a same driving belt 3 is wound between the circumferential outer walls of the driving pulley 2 and the driven pulley; by means of the provided conveying pallet 10 and conveyor belt 22, the raw material sheet 30 to be hot pressed can be quickly transported to the vicinity of the mold base 16 for hot pressing processing to improve processing efficiency.

[0026] Please refer to Figure 1 , Figure 2 and Figure 5 A control console 18 is fixed on the front of the workbench 1 near the top, and a control switch for controlling the two electromagnets 21 and the stepping motor 38 is provided on the control console 18; through the provided control console 18 and the control switch, the hot pressing process can be conveniently and accurately controlled.

[0027] Please refer to Figure 5 , Figure 7 and Fig.10 A baffle strip 35 is fixed to one end of the upper surface of the conveying pallet 10 close to the mold base 16, and the conveyor belt 22 passing through the lower surface of the baffle strip 35 can normally pass through the belt groove 1001, but the raw material sheet 30 located above the conveyor belt 22 is blocked in front of the baffle strip 35, which is convenient for static grasping, and can be loaded by a set robot or manually.

[0028] Please refer to Figure 5 , Figure 7 and Fig.10A vertically placed loading bucket 7 is fixed to one end of the upper surface of the conveying pallet 10 away from the baffle strip 35, and a discharge door 345 is opened at the bottom of the loading bucket 7, and a gate knife 343 is slidably connected to the front of the loading bucket 7, and vertical fixing blocks 344 are fixed to both ends of the gate knife 343, and tension springs 342 are fixed to the tops of the two fixing blocks 344, and the surface of the loading bucket 7 is located on both sides of the discharge door 345, and C-shaped guide rails 6 that are compatible with the outer diameter of the fixing blocks 344 are fixed respectively, and the side of the loading bucket 7 is located at the top of the C-shaped guide rail 6. A stopper 341 is fixed; a stud rotating sleeve 34 is fixed to the top of the gate knife 343 on the side of the loading bucket 7, and An adjusting screw 8 is threadedly connected in the stud rotating sleeve 34; a circular hole 1002 is opened at the bottom of the belt groove 1001 below the loading barrel 7, and an internal threaded tube 33 is fixed at the lower end of the circular hole 1002 below the conveying pallet 10, and a threaded column 32 is threaded in the internal threaded tube 33; it is used to assist in adjusting the size of the discharge gap; a through vertical groove 9 is reserved on the back of the loading barrel 7 to facilitate the removal and placement of the raw material sheets 30; through the provided adjusting screw 8 and the gate knife 343 pulled by two tension springs 342, when it is necessary to adjust the number of raw material sheets 30 coming out each time, it is only necessary to control the downward pressure of the adjusting screw 8, and the greater the downward pressure, the fewer the number of sheets coming out.

[0029] A method for fixing a device for producing a speaker diaphragm; comprising the following steps: Step 1: First, adjust the discharging speed and the number of sheets discharged each time of the loading barrel 7 in the loading mechanism according to the processing speed. When adjusting, rotate the stud rotating sleeve 8 so that the gap between the bottom end of the gate knife 343 at its bottom and the surface of the conveyor belt 22 is adapted to the discharging speed; the gate knife 343 moves downward to reduce the size of the gap, thereby reducing the number of sheets discharged each time, and vice versa, increasing the number of sheets discharged each time; Step 2: When the raw sheet 30 is transferred to the plane slot 161, the control console 18 controls the arc punching rod 11 and the hot press 14 to start, that is, the corresponding electromagnet 21 used to drive the magnet block 20 to move is energized, and the arc punching rod 11 drives the hot press 14 to move toward the die groove 163 until the raw sheet 30 laid on the plane slot 161 is pressed into the die groove 163 and slowly formed; that is, the raw sheet 30 is started to be hot-pressed, and after the hot-pressing is completed, another electromagnet 21 is started, and the arc punching rod 11 will rotate in the opposite direction as a whole; The compression spring at the bottom of the shaft frame 25 will drive the one-way rotating gear 24 to press tightly against the right-angle teeth 1101, and then the one-way rotating gear 24 will be rotated, and the air channel 162 will be inflated at high speed under the action of the connecting rod and the piston barrel 28. At this time, the molded diaphragm 15 after hot pressing will not only be cooled faster, but also will be separated from the mold groove 163 under the action of high-speed air pressure to complete automatic demolding; Step 3: The blown-out molded diaphragm 15 is discharged along the discharge guide plate 17 .

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fixing device for producing a speaker diaphragm, comprising a workbench (1) with an opening downward and an overall long strip-shaped channel steel structure, wherein a hot pressing device is arranged on the upper surface of the workbench (1) near the rear side, and characterized in that: The hot pressing device comprises an axial rod support frame (13) fixed to the upper surface of the workbench (1) near the middle of the rear side, and the axial rod support frame (13) is rotatably connected to a main rotating shaft (121) extending horizontally toward the front near the top, and a folded spoke rod (12) with an overall U-shaped structure is fixed to the front end of the main rotating shaft (121), and the end of the folded spoke rod (12) away from the main rotating shaft (121) is fixed to the same arc-shaped punching rod (11), and the rotation center of the arc-shaped punching rod (11) coincides with the axis of the main rotating shaft (121); a mold base (16) is fixed to the upper surface of the workbench (1) near one end, and the longitudinal section of the mold base (16) is a right-angled trapezoidal structure, and a plane slot (161) is opened on the inclined surface of the mold base (16), and a downwardly concave mold groove (163) is reserved at the bottom of the groove of the plane slot (161); the center of the mold groove (163) An air passage (162) is provided which passes through the die base (16); a hot press (14) is fixed to one end of the arc-shaped punching rod (11) close to the die base (16), and a die head pressing block (141) which matches the die base (16) is provided at the working end of the hot press (14); when the arc-shaped punching rod (11) rotates counterclockwise, it can drive the hot press (14) and the die head pressing block (141) at its end to be pressed into the die groove (163); a rectangular hole (102) which matches the running track of the arc-shaped punching rod (11) is provided at one end of the upper surface of the workbench (1) away from the die base (16), and right-angle teeth (1101) are reserved at one end of the circumferential outer wall of the arc-shaped punching rod (11) away from the hot press (14); and a material return mechanism is provided inside the workbench (1), and the material return mechanism is powered by the reverse operation of the right-angle teeth (1101).

2. A fixing device for producing a speaker diaphragm according to claim 1, characterized in that: A discharge notch is provided in the middle of one end of the workbench (1) close to the mold base (16), and a discharge guide plate (17) for guiding the molded diaphragm (15) to slide down is embedded in the discharge notch.

3. A fixing device for producing a speaker diaphragm according to claim 1, characterized in that: A support plate seat (23) is fixed near the bottom of the workbench (1), and the material return mechanism includes a piston barrel (28) fixed on the support plate seat (23), a one-way air outlet valve is inserted into the bottom of the piston barrel (28), and an air supply pipe (29) is connected between the outlet of the one-way air outlet valve and the inlet of the airway (162), and an interface (164) for connecting to the air supply pipe (29) is provided at the air inlet of the airway (162); and a strip-shaped through hole (103) matching the diameter of the air supply pipe (29) is opened on the workbench (1); a piston plate is slidably connected to the piston barrel (28), and a connecting rod is rotatably connected to the middle of the piston plate; the support plate seat (23 ) is provided with a square hole at an opening near the piston barrel (28), and a rectangular barrel (27) with an opening upwardly in a barrel-shaped structure is embedded in the square hole; a shaft rod frame (25) is slidably connected to the top opening of the rectangular barrel (27), and a bearing seat is embedded at the top of the shaft rod frame (25); a compression spring is fixed between the bottom end of the shaft rod frame (25) and the barrel bottom of the rectangular barrel (27); a long rotating shaft is rotatably connected in the bearing seat, and a wheel disc (26) and a one-way propulsion gear (24) are respectively fixed at the front and rear ends of the long rotating shaft; the one-way propulsion gear (24) is meshed with the right-angle teeth (1101), and the other end of the connecting rod is rotatably connected to the circumferential edge of the wheel disc (26).

4. A fixing device for producing a speaker diaphragm according to claim 3, characterized in that: A card cover is fixed on the strip-shaped through hole (103), and the gas delivery pipe (29) passes through the card cover.

5. A fixing device for producing a speaker diaphragm according to claim 4, characterized in that: A swing rod is fixed at the rear end of the main rotating shaft (121), the swing rod is made of a tough material, and a magnet bar (20) with an arc structure is fixed at the bottom end of the swing rod; a U-shaped frame (19) is fixed at the rear side of the workbench (1) below the magnet bar (20), and electromagnets (21) are fixed at both ends of the U-shaped frame (19), and when the two electromagnets (21) are energized, the opposite ends thereof attract the two ends of the magnet bar (20).

6. A fixing device for producing a speaker diaphragm according to claim 5, characterized in that: A feeding mechanism is provided at one end of the upper surface of the workbench (1) away from the mold base (16), and the feeding mechanism comprises two mutually parallel supporting frames (4) fixed on the workbench (1), and a conveying pallet (10) at the same level is fixed at the top of the supporting frames (4); mutually parallel conveying rollers 1 (31) and 2 (37) are provided at both ends of the conveying pallet (10), and a roller head frame (36) for fixing the roller head of the conveying pallet (10) is provided at one end of the conveying pallet (10) close to the conveying roller 2 (37); and a same conveying belt (22) is wound between the circumferential outer walls of the conveying rollers 1 (31) and 2 (37); the upper surface of the conveying pallet (10) is provided with A belt groove (1001); a roller bracket (5) for supporting the conveying roller (31) is fixed to one end of the workbench (1) close to the conveying roller one (31); a driven pulley is fixed to one end of the conveying roller two (37) close to the front of the device, and a motor mounting hole (101) is opened on the upper surface of the workbench (1) directly below the driven pulley, a stepping motor (38) is fixed to the top inner wall of the workbench (1) close to the motor mounting hole (101), and a driving pulley (2) is fixed to the top end of the output shaft of the stepping motor (38) to form a transmission connection with the driven pulley, and a same driving belt (3) is wound between the circumferential outer walls of the driving pulley (2) and the driven pulley.

7. A fixing device for producing a speaker diaphragm according to claim 6, characterized in that: A control console (18) is fixed on the front side of the workbench (1) near the top, and a control switch for controlling the start of the two electromagnets (21) and the stepping motor (38) is provided on the control console (18).

8. A fixing device for producing a speaker diaphragm according to claim 7, characterized in that: A baffle strip (35) is fixed to one end of the upper surface of the conveying support plate (10) close to the mold base (16), and the conveyor belt (22) passing through the lower surface of the baffle strip (35) can pass through the belt groove (1001) normally.

9. A fixing device for producing a speaker diaphragm according to claim 8, characterized in that: A vertically placed loading bucket (7) is fixed to one end of the upper surface of the conveying pallet (10) away from the baffle bar (35), and a discharge door (345) is opened at the bottom end of the loading bucket (7), and a gate knife (343) is slidably connected to the front of the loading bucket (7), and vertical fixed blocks (344) are fixed to both ends of the gate knife (343), and tension springs (342) are fixed to the tops of the two fixed blocks (344), and C-shaped guide rails (6) adapted to the outer diameter of the fixed blocks (344) are respectively fixed on both sides of the surface of the loading bucket (7) located at the discharge door (345), and the side of the loading bucket (7) is located at the top of the C-shaped guide rail (6). A stopper (341) is fixed at each end; a stud rotating sleeve (34) is fixed on the side of the loading barrel (7) at the top of the gate knife (343), and an adjusting screw (8) is screwed into the stud rotating sleeve (34); a round hole (1002) is opened at the bottom of the belt groove (1001) located below the loading barrel (7), and an internal threaded tube (33) is fixed at the lower end of the round hole (1002) below the conveying support plate (10), and a threaded column (32) is screwed into the internal threaded tube (33); it is used to assist in adjusting the size of the discharge gap; a through vertical groove (9) is reserved on the back of the loading barrel (7) to facilitate the placement of the raw material sheet (30).

10. A method for producing a fixing device for a speaker diaphragm, comprising a fixing device for producing a speaker diaphragm as claimed in claim 9, characterized in that; The following steps are involved: Step 1: First, the discharge speed of the loading bucket (7) in the loading mechanism and the number of sheets discharged each time are adjusted according to the processing speed. During the adjustment, the stud rotating sleeve (8) is rotated so that the gap between the bottom end of the gate knife (343) and the surface of the conveyor belt (22) is adapted to the discharge speed. The gate knife (343) moves downward to reduce the size of the gap, thereby reducing the number of sheets discharged each time, and vice versa, the number of sheets discharged each time is increased; Step 2: When the raw material sheet (30) is transferred to the plane slot (161), the control console (18) controls the arc-shaped punching rod (11) and the hot press (14) to start, that is, the corresponding electromagnet (21) used to drive the magnet block (20) to move is energized, and the arc-shaped punching rod (11) drives the hot press (14) to move toward the die groove (163) until the raw material sheet (30) laid on the plane slot (161) is pressed into the die groove (163) and slowly formed; after the hot pressing is completed, another electromagnet (21) is started, and the arc-shaped punching rod (11) will rotate in the opposite direction as a whole; The compression spring at the bottom of the shaft frame (25) will drive the one-way rotating gear (24) to press tightly against the right-angle teeth (1101), and then the one-way rotating gear (24) will be rotated, and the air passage (162) will be inflated at high speed under the action of the connecting rod and the piston barrel (28). At this time, the molded diaphragm (15) after hot pressing will not only be cooled faster, but also will be separated from the mold groove (163) under the action of the high-speed air pressure to complete automatic demolding; Step 3: The blown-out molded diaphragm (15) is discharged along the discharge guide plate (17).

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