Automatic notching device for loudspeaker basin stand

Abstract

The utility model relates to the technical field of loudspeaker basin stands, and discloses an automatic notching device for a loudspeaker basin stand, which comprises a basin stand lower punching die fixed on a workbench of a punching machine, a liftable basin stand upper punching die is arranged above the basin stand lower punching die, the basin stand lower punching die comprises a mandrel and a positioning boss which are integrally formed, and the positioning boss is arranged on the mandrel. The core shaft is inserted and fixed on the workbench; the core shaft is rotatably connected with a basin stand overturning disc, and a positioning convex pin is fixed on the basin stand overturning disc; the basin stand overturning disc is provided with a driving mechanism for driving the basin stand overturning disc to rotate in a clearance mode. The loudspeaker basin stand can be automatically driven to automatically overturn through the basin stand overturning disc and the driving mechanism, the punching work of a plurality of grooves can be completed through one-time clamping, and the production efficiency of the loudspeaker basin stand can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of speaker frames, in particular to an automatic slotting device for speaker frames. Background Art

[0002] A speaker frame is the "skeleton" of a conical speaker. It can assemble sound-producing components such as a diaphragm, a surround, a centering piece, a magnet, and a magnetic conductive element together, and can also install the speaker on corresponding external devices such as an automobile. As shown in the attached specification of the existing speaker frame 90, it includes a plurality of slots 901. The processing of the existing slots is generally formed by stamping with a stamping machine. However, after stamping one slot, the worker needs to re-clamp the speaker frame to perform the stamping work of the second slot. This stamping method has relatively low efficiency and certain potential safety hazards. Figure 5 As shown in the figure, it includes a plurality of slots 901. The processing of the existing slots is generally formed by stamping with a stamping machine. However, after stamping one slot, the worker needs to re-clamp the speaker frame to perform the stamping work of the second slot. This stamping method has relatively low efficiency and certain potential safety hazards. Content of the Utility Model

[0003] The purpose of the utility model is to provide an automatic slotting device for a speaker frame. Through a frame turnover disk and a driving mechanism, the speaker frame can be automatically driven to turn over, and the stamping work of a plurality of slots can be completed with one clamping, which can effectively improve the production efficiency of the speaker frame.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions:

[0005] An automatic slotting device for a speaker frame includes a frame lower die fixed on the workbench of a stamping machine. Above the frame lower die, there is a liftable frame upper die. The frame lower die includes an integrally formed core shaft and a positioning boss. The core shaft is inserted and fixed on the workbench.

[0006] A frame turnover disk is rotatably connected to the core shaft, and a positioning pin is fixed on the frame turnover disk. The frame turnover disk is provided with a driving mechanism for driving it to rotate intermittently.

[0007] Insert the speaker frame to be punched into the positioning boss, then insert one of the holes of the speaker frame onto the positioning pin and make the speaker frame abut against the frame turnover disk.

[0008] The frame upper die moves down to punch the slot of the frame. After punching the slot, the frame upper die moves up. At the same time, the driving mechanism drives the frame turnover disk to rotate by a certain angle, and then the frame upper die moves down to perform the punching work of the second slot.

[0009] The utility model is further arranged as follows: The core shaft and the positioning boss are arranged obliquely upward, and the included angle α between the central axes of the core shaft and the positioning boss and the horizontal plane is 10° - 15°.

[0010] The mandrel and the boss are arranged obliquely upward, so that the speaker frame turnover plate of the disaster prevention frame is also arranged obliquely upward, which can improve the stability of the speaker frame on the turnover plate of the disaster prevention frame and prevent it from falling off during the rotation process.

[0011] The utility model is further arranged as follows: a vertically arranged die groove is formed on the upper side wall of the positioning boss, and the die groove is located directly below the upper die of the speaker frame.

[0012] The utility model is further arranged as follows: the upper die of the speaker frame is fixed on a liftable punch head, the upper end of the punch head is rotatably connected to the lower end of a push-pull rod, and the upper end of the push-pull rod is rotatably connected to a crankshaft;

[0013] An annular groove is formed on the outer wall of the speaker frame turnover plate;

[0014] The driving mechanism includes a pull rope inserted into the lower end of the annular groove. The upper extending end of the pull rope bypasses the left guide wheel and is fixed on a rope fixing rod. The rope fixing rod is rotatably connected to the lower end of a second pull rod, and the upper end of the second pull rod is rotatably connected to a driving shaft. The driving shaft is eccentrically fixed on a driving wheel, and the driving wheel is fixed at the end of the crankshaft; A ratchet mechanism is arranged between the speaker frame turnover plate and the mandrel.

[0015] A weight is arranged at the lower extending end of the pull rope bypassing the right guide wheel. The left guide wheel and the right guide wheel are rotatably connected to the frame of the punching machine.

[0016] Through the above technical solution, the rotation of the crankshaft drives the driving wheel and the push-pull rod to work synchronously. While the push-pull rod pulls the punch head upward, the driving wheel drives the driving shaft to move upward. The driving shaft drives the rope fixing rod to move upward through the second pull rod, and the rope fixing rod drives the corresponding end of the pull rope to move upward. The part of the pull rope between the left guide wheel and the right guide wheel moves to the left. The pull rope drives the speaker frame turnover plate to rotate clockwise by a certain angle through the frictional force with the annular groove, and the speaker frame turnover plate drives the speaker frame to rotate together; Then the crankshaft drives the push-pull rod to move downward and the driving wheel continues to rotate. The driving shaft moves downward from the highest end. Under the action of the weight, the pull rope moves in the reverse direction. Through the ratchet mechanism, the speaker frame turnover plate can rotate counterclockwise by a certain free angle and then cannot continue to rotate, so as to position the speaker frame to be punched.

[0017] The utility model is further arranged as follows: a sleeve matched with the mandrel is formed in the middle of the turntable; A second counterbore is formed on the mandrel;

[0018] The ratchet mechanism includes a plurality of ratchet grooves uniformly formed on the inner wall of the sleeve and a spring and a pin inserted into the second counterbore. The spring is clamped between the inner end of the pin and the bottom surface of the second counterbore, and the outer end of the pin is inserted into one of the ratchet grooves.

[0019] The present utility model is further configured such that: the ratchet groove includes a flat surface and an arc surface, the junction of the arc surface and the flat surface is arranged away from the central axis of the sleeve, and the other end of the arc surface is connected to the inner wall of the sleeve.

[0020] When the basin frame flipping disc rotates clockwise, the arc surface can drive the pin to retract. When the basin frame flipping disc rotates counterclockwise, the pin can automatically move out under the action of the spring. When the flat surface presses against the pin, the basin frame flipping disc cannot continue to rotate counterclockwise, thus realizing overall one-way rotation.

[0021] The prominent effect of the present utility model is:

[0022] Compared with the prior art, through the basin frame flipping disc and the driving mechanism, the loudspeaker basin frame can be automatically driven to flip, and multiple notching stamping operations can be completed with one clamping, which can effectively improve the production efficiency of the loudspeaker basin frame;

[0023] The basin frame flipping disc and the upper punch of the basin frame are driven by the same crankshaft, which can effectively ensure the consistency of the rotation of the flipping disc and the movement of the upper punch. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the present utility model;

[0025] Figure 2 is a partial assembly schematic diagram of the lower punch of the basin frame and the basin frame flipping disc of the present utility model;

[0026] Figure 3 is Figure 1 a cross-sectional view taken along A-A;

[0027] Figure 4 is Figure 3 a cross-sectional view taken along B-B;

[0028] Figure 5 is a schematic structural diagram of the loudspeaker basin frame related to the present utility model.

[0029] Reference numerals: 10, workbench; 11,, stamping head; 12, push-pull rod; 13, crankshaft;

[0030] 20, lower punch of the basin frame; 21, upper punch of the basin frame; 22, basin frame flipping disc; 23, positioning convex pin;

[0031] 201, mandrel; 202, positioning convex platform; 203, die groove; 204, second counterbore;

[0032] 221, annular groove; 222, sleeve;

[0033] 30. Driving mechanism; 301. Pull rope; 302. Left guide wheel; 303. Rope fixing rod; 304. Second pull rod; 305. Driving shaft; 306. Driving wheel; 307. Right guide wheel; 308. Load

[0034] 40. Ratchet mechanism; 401. Ratchet groove; 402. Spring; 403. Stud

[0035] 4011. Plane; 4012. Arc surface

[0036] 90. Speaker frame, 901. Groove Detailed implementation manners

[0037] The following combines the drawings and embodiments to further describe in detail the detailed implementation manners of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0038] The following reference Figures 1 to 4 is used to illustrate the present utility model:

[0039] An automatic grooving device for a speaker frame, as Figures 1 - 3 shown, includes a lower die 20 for the speaker frame fixed on the workbench 10 of a stamping machine. Above the lower die 20 for the speaker frame, there is a liftable upper die 21 for the speaker frame. The lower die 20 for the speaker frame includes an integrally formed core shaft 201 and a positioning boss 202. The core shaft 201 is inserted and fixed on the workbench 10. Preferably, the core shaft 201 and the positioning boss 202 are arranged obliquely upward, and the included angle α between the central axes of the core shaft 201 and the positioning boss 202 and the horizontal plane is between 10° and 15°, so that the speaker frame turnover plate is also arranged obliquely upward, which can improve the stability of the speaker frame on the speaker frame turnover plate and prevent it from falling off during the rotation process. Preferably, a vertically arranged die groove 203 is formed on the upper side wall of the positioning boss 202, and the die groove 203 is located directly below the upper die 21 for the speaker frame.

[0040] A speaker frame turnover plate 22 is rotatably connected to the core shaft 201, and a positioning pin 23 is fixed on the speaker frame turnover plate 22; the speaker frame turnover plate 22 is provided with a driving mechanism 30 for driving it to rotate intermittently.

[0041] Insert the speaker frame to be punched into the positioning boss, and then insert one of the holes of the speaker frame onto the positioning pin and make the speaker frame abut against the speaker frame turnover plate;

[0042] The upper die for the speaker frame moves down to punch a groove in the speaker frame. After punching the groove, the upper die for the speaker frame moves up. At the same time, the driving mechanism drives the speaker frame turnover plate to rotate by a certain angle, and then the upper die for the speaker frame moves down to punch the second groove.

[0043] As Figure 1 、Figure 3 As shown, the upper die 21 of the basin frame is fixed on the liftable punching head 11. The upper end of the punching head 11 is rotatably connected to the lower end of the push-pull rod 12, and the upper end of the push-pull rod 12 is rotatably connected to the crankshaft 13;

[0044] An annular groove 221 is formed on the outer wall of the basin frame turning disk 22;

[0045] The driving mechanism 30 includes a pull rope 301 inserted into the lower end of the annular groove 221. The upper extending end of the pull rope 301 bypasses the left guide pulley 302 and is fixed on the rope fixing rod 303. The rope fixing rod 303 is rotatably connected to the lower end of the second pull rod 304, and the upper end of the second pull rod 304 is rotatably connected to the driving shaft 305. The driving shaft 305 is eccentrically fixed on the driving wheel 306, and the driving wheel 306 is fixed at the end of the crankshaft 13; A ratchet mechanism 40 is provided between the basin frame turning disk 22 and the core shaft 201.

[0046] A weight 308 is provided at the lower extending end of the pull rope 301 bypassing the right guide pulley 307. The weight can be a heavy object or a tension spring. The left guide pulley and the right guide pulley are rotatably connected to the frame of the punching machine.

[0047] When the crankshaft rotates, it drives the driving wheel and the push-pull rod to work synchronously. While the push-pull rod pulls the punching head upward, the driving wheel drives the driving shaft to move upward. The driving shaft drives the rope fixing rod to move upward through the second pull rod. The rope fixing rod drives the corresponding end of the pull rope to move upward, and the part of the pull rope between the left guide pulley and the right guide pulley moves to the left. The pull rope drives the basin frame turning disk to rotate clockwise by a certain angle through the frictional force between the pull rope and the annular groove. The basin frame turning disk drives the speaker basin frame to rotate together; Then the crankshaft drives the push-pull rod to move downward and the driving wheel continues to rotate. The driving shaft moves downward from the highest position. Under the action of the weight, the pull rope moves in the reverse direction. Through the ratchet mechanism, the basin frame turning disk can rotate counterclockwise by a certain free angle and then cannot continue to rotate, so as to position the speaker basin frame to be punched.

[0048] As Figure 4 shown, a sleeve 222 matching with the core shaft 201 is formed in the middle of the turning disk 22; A second counterbore 204 is formed on the core shaft 201;

[0049] The ratchet mechanism 40 includes a plurality of ratchet grooves 401 evenly formed on the inner wall of the sleeve 222, a spring 402 and a pin 403 inserted into the second counterbore 204. The spring 402 is clamped between the inner end of the pin 403 and the bottom surface of the second counterbore 204. The outer end of the pin 403 is inserted into one of the ratchet grooves 401. The ratchet groove 401 includes a flat surface 4011 and an arc surface 4012. The joint of the arc surface 4012 and the flat surface 4011 is arranged away from the center line of the sleeve 222, and the other end of the arc surface 4012 is connected to the inner wall of the sleeve 222.

[0050] When the basin frame flipping disc rotates clockwise, the arc surface can drive the pin to retract. When the basin frame flipping disc rotates counterclockwise, the pin can automatically move out under the action of the spring. When the plane presses against the pin, the basin frame flipping disc cannot continue to rotate counterclockwise, thus realizing the overall one-way rotation.

[0051] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made. These improvements and modifications under the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. An automatic notching device for a speaker frame, comprising a frame lower punching die (20) fixed to a workbench (10) of a punching machine, and a frame upper punching die (21) which can be raised and lowered is provided above the frame lower punching die (20), characterized in that: The basin frame lower punch die (20) comprises an integrally formed core shaft (201) and a positioning boss (202); the core shaft (201) is inserted into and fixed on the workbench (10); The core shaft (201) is rotatably connected to a basin frame turning plate (22), and a positioning convex pin (23) is fixed to the basin frame turning plate (22); the basin frame turning plate (22) is provided with a driving mechanism (30) for driving the basin frame turning plate (22) to rotate in a clearance.

2. The automatic notching device for a speaker frame according to claim 1, characterized in that: The core shaft (201) and the positioning boss (202) are arranged obliquely upward, and the angle α between the central axis of the core shaft (201) and the positioning boss (202) and the horizontal plane is between 10° and 15°.

3. The automatic notching device for a speaker frame according to claim 1, characterized in that: A vertically arranged die groove (203) is formed on the upper side wall of the positioning boss (202), and the die groove (203) is located directly below the upper punching die (21) of the basin frame.

4. The automatic notching device for a speaker frame according to claim 1, characterized in that: The basin frame upper punch die (21) is fixed on a liftable punch head (11), the upper end of the punch head (11) is rotatably connected to the lower end of a push-pull rod (12), and the upper end of the push-pull rod (12) is rotatably connected to a crankshaft (13); An annular groove (221) is formed on the outer wall of the basin rack turning plate (22); The driving mechanism (30) comprises a pull rope (301) inserted into the lower end of the annular groove (221); the pull rope (301) passes around the upper protruding end of the left guide wheel (302) and is fixed to the rope fixing rod (303); the rope fixing rod (303) is rotatably connected to the lower end of the second pull rod (304); the upper end of the second pull rod (304) is rotatably connected to the driving shaft (305); the driving shaft (305) is eccentrically fixed to the driving wheel (306); and the driving wheel (306) is fixed to the end of the crankshaft (13); a ratchet mechanism (40) is provided between the basin frame turning plate (22) and the core shaft (201).

5. The automatic notching device for a speaker frame according to claim 4, characterized in that: A sleeve (222) matching the core shaft (201) is formed in the middle of the rotating disk (22); a second countersunk hole (204) is formed on the core shaft (201); The ratchet mechanism (40) comprises a plurality of ratchet grooves (401) uniformly formed on the inner wall of the sleeve (222), and a spring (402) and a pin (403) inserted into the second countersunk hole (204); the spring (402) is clamped between the inner end of the pin (403) and the bottom surface of the second countersunk hole (204); and the outer end of the pin (403) is inserted into one of the ratchet grooves (401).

6. The automatic notching device for a speaker frame according to claim 5, characterized in that: The ratchet groove (401) comprises a plane (4011) and an arc surface (4012); the junction of the arc surface (4012) and the plane (4011) is arranged away from the center line of the sleeve (222); and the other end of the arc surface (4012) is connected to the inner wall of the sleeve (222).

Images