Inner punching type basin stand balance air hole punching die

Abstract

The utility model relates to the technical field of loudspeaker basin stands, and discloses an inner punching type basin stand balance air hole punching die which comprises an upper die and a lower die, the upper die comprises an upper die bottom plate, a supporting plate protruding forwards is formed on the upper die bottom plate, an upper die positioning block is fixed to the lower end of the supporting plate, and a punching die protruding downwards is fixed to the upper die positioning block; the lower die comprises a lower die bottom plate, a lower die support and a lower die main body; the lower die body comprises an obliquely-arranged supporting positioning face and a positioning boss protruding forwards, a vertically-through die hole is formed in the positioning boss, and the die hole is right opposite to the stamping die. The loudspeaker basin stand is inserted into the supporting plate and the punching die, and the punching die punches from inside to outside, so that the problem that an existing basin stand punching die cannot machine balance air holes is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeaker basin frames, in particular to an inner punching type basin frame balancing air hole punching die. Background Art

[0002] The speaker frame is an important part of the speaker as a support. The speaker frame is usually made through multiple stamping processes. Figure 4 As shown in the partial figure, when the speaker frame is installed with the damper, voice coil, magnet, paper cone, folding ring, dust cap, etc., a complete speaker is formed. However, because the damper, voice coil, magnet, etc. form a closed cavity, when the damper vibrates with the voice coil, the internal pressure of the cavity changes, affecting the movement of the damper, thereby affecting the sound quality of the speaker. To ensure the normal operation of the speaker, multiple balancing air holes are designed on the inner wall 902 of the annular groove 901 of the speaker frame. However, these balancing air holes are blocked by the outer wall 903 of the annular groove and cannot be punched from the outside. Existing frame punching dies all punch from the outside in, which cannot meet the process requirements; therefore, a corresponding new balancing air hole punching die is urgently needed. Utility Model Content

[0003] The purpose of the utility model is to provide an inner punching die for punching out balancing holes of a speaker frame, which solves the problem that the existing punching die for punching out speaker frames cannot process balancing holes by inserting the speaker frame into a support plate and a punching die and punching from the inside out.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] An inner punch type basin stand balancing air hole punching die comprises an upper die and a lower die, wherein the upper die comprises an upper die bottom plate, the upper die bottom plate is formed with a support plate protruding forward, an upper die positioning block is fixed to the lower end of the support plate, and a downwardly protruding punch is fixed to the upper die positioning block;

[0006] The lower die includes a lower die bottom plate, a lower die support and a lower die body; the lower die body includes an inclined support positioning surface and a forward protruding positioning boss, a vertically penetrating die hole is formed on the positioning boss, and the die hole is arranged opposite to the punch die.

[0007] The upper die base plate is fixed on the lifting head of the punching machine, and the lower die base plate is fixed on the workbench of the punching machine. When the basin frame is stamped, the middle through hole of the basin frame is inserted into the support plate, and the speaker basin frame is supported and positioned by the positioning boss and the support positioning surface; then the lifting head drives the upper die base plate to move downward, and the upper die base plate drives the punching die to move downward and insert into the die hole. The punching die cuts and punches out the corresponding part of the basin frame, and completes the processing and forming of the balance air hole from the inside to the outside.

[0008] The present invention further features a positioning boss comprising a concave first arcuate surface and a convex second arcuate surface. The annular groove of the speaker frame is inserted into the positioning boss, with the inner sidewall of the annular groove abutting the first arcuate surface and the outer sidewall of the annular groove abutting the second arcuate surface. The bottom surface of the speaker frame abuts the positioning boss.

[0009] The utility model is further configured as follows: a discharge tapered hole is formed at the lower end of the die hole, which is smaller at the top and larger at the bottom.

[0010] The discharge cone hole is set to be small at the top and large at the bottom to facilitate the discharge of the waste materials cut by punching.

[0011] The utility model is further configured as follows: a protective pad is fixed to the front end of the support plate. By providing the pad, the basin rack can be prevented from directly colliding with the support plate and causing bumps and scratches when the basin rack is installed.

[0012] The utility model is further configured as follows: the edges of the upper mold positioning block and the support plate are formed with give-away chamfers or give-away fillets, which can increase the movement range of the upper mold positioning block and the support plate in the middle hole of the speaker basin frame, ensuring the normal processing of the balance air hole, and also facilitating the insertion of the basin frame into the support plate.

[0013] The utility model is further configured as follows: a detection hole is formed on the support positioning surface, a displacement sensor is fixed in the detection hole, the detection rod end of the displacement sensor is arranged higher than the support positioning surface, the displacement sensor is electrically connected to a controller, and the controller is electrically connected to the corresponding punching machine.

[0014] After the basin frame is installed, the bottom surface of the basin frame can be pressed against the end of the detection rod of the displacement sensor. The detection rod of the displacement sensor will expand and contract, thereby transmitting the detected signal to the controller, making it easy to judge whether the basin frame is installed in place on the lower mold body. The controller can also respond in time and control the punching machine to perform stamping work, thereby further improving the punching efficiency.

[0015] The two displacement sensors are provided with two on each side. By providing two displacement sensors, it is possible to further improve whether the basin frame is installed in place and effectively avoid ineffective stamping work after unilateral installation.

[0016] The outstanding effects of the utility model are:

[0017] Compared with the existing technology, the speaker basin frame is inserted into the support plate and the punching die, and the punching die is punched from the inside out, which solves the problem that the existing basin frame punching die cannot process the balance pores.

[0018] By setting up protective pads, the basin frame can be prevented from bumping during the punching process;

[0019] By setting a displacement sensor, it is possible to detect whether the basin rack is installed in place. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the assembly of the punching die and the speaker frame;

[0021] Figure 2 This is a structural diagram of the punching die;

[0022] Figure 3 This is the front view of the assembly of the punching die and the speaker frame;

[0023] Figure 4 for Figure 3 About the cross-sectional view of AA;

[0024] Figure 5 for Figure 4 A partial enlarged view of B.

[0025] Reference numerals: 1, upper die;

[0026] 10. Upper die base plate; 11. Upper die positioning block; 12. Punch die;

[0027] 101, support plate;

[0028] 2. Lower mold;

[0029] 20. Lower die base plate; 21. Lower die support; 22. Lower die body; 23. Displacement sensor;

[0030] 221, support and positioning surface; 222, positioning boss; 223, die hole; 224, first arc surface; 225, second arc surface; 226, discharge cone hole;

[0031] 9. Speaker frame; 901. Annular groove; 902. Inner wall; 903. Outer wall; 904. Bottom surface; 905. Balancing vent. DETAILED DESCRIPTION

[0032] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] The following references Figures 1 to 5 The utility model is described as follows:

[0034] A die for punching and cutting balanced air holes for an inner-punch basin stand comprises an upper die 1 and a lower die 2. The upper die 1 comprises an upper die bottom plate 10, the upper die bottom plate 10 being formed with a forward-convex support plate 101, an upper die positioning block 11 being fixed to the lower end of the support plate 101, and a downward-convex punching die 12 being fixed to the upper die positioning block 11;

[0035] The lower die 2 comprises a lower die base plate 20, a lower die support 21, and a lower die body 22. The lower die body 22 comprises an inclined support positioning surface 221 and a forwardly protruding positioning boss 222. The positioning boss 222 is formed with a vertically extending die hole 223. The lower end of the die hole 223 is formed with a discharge tapered hole 226 that is smaller at the top and larger at the bottom. The die hole 223 is disposed directly opposite the punch die 12. The positioning boss 222 comprises a concave first arc surface 224 and a convex second arc surface 225. The annular groove 901 of the speaker frame 9 is inserted into the positioning boss, with the inner sidewall 902 of the annular groove 901 resting on the first arc surface and the outer sidewall 903 of the annular groove 901 pressing against the second arc surface. The bottom surface 904 of the speaker frame 9 rests on the positioning boss.

[0036] The upper die base is fixed on the lifting head of the punching machine, and the lower die base is fixed on the workbench of the punching machine. When the basin frame is stamped, the middle through hole of the basin frame is inserted into the support plate, and the speaker basin frame is supported and positioned by the positioning boss and the support positioning surface; then the lifting head drives the upper die base to move downward, and the upper die base drives the punching die to move downward and be inserted into the die hole. The punching die cuts and punches out the corresponding part of the basin frame, completing the processing and forming of the balancing air hole 905 from the inside out.

[0037] Preferably, a protective pad 13 is fixed to the front end of the support plate 101 .

[0038] Preferably, the edges of the upper mold positioning block 11 and the support plate 101 are formed with chamfers or fillets.

[0039] Preferably, a detection hole is formed on the support and positioning surface 221, and a displacement sensor 23 is fixed in the detection hole. The end of the detection rod of the displacement sensor 23 is arranged above the support and positioning surface 221. Two displacement sensors 23 are provided, and the two displacement sensors 23 are arranged on the left and right. The displacement sensors are electrically connected to a controller, and the controller is electrically connected to the corresponding stamping machine.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications based on the above assumptions should also be regarded as within the scope of protection of the present invention.

Claims

1. An internal punching type basin frame balance hole punching die, comprising an upper die (1) and a lower die (2), characterized in that: The upper die (1) comprises an upper die bottom plate (10), the upper die bottom plate (10) is formed with a support plate (101) protruding forward, an upper die positioning block (11) is fixed at the lower end of the support plate (101), and a punching die (12) protruding downward is fixed on the upper die positioning block (11); The lower die (2) comprises a lower die body (22); the lower die body (22) comprises an inclined support positioning surface (221) and a forward-protruding positioning boss (222); a vertically penetrating die hole (223) is formed on the positioning boss (222); the die hole (223) is arranged opposite to the punching die (12).

2. The die for punching and cutting the balancing air holes of an inner-punch basin stand according to claim 1, characterized in that: The positioning boss (222) comprises a concave first arc surface (224) and a convex second arc surface (225).

3. The die for punching and cutting the balancing air holes of an inner-punch basin stand according to claim 1, characterized in that: A discharge tapered hole (226) is formed at the lower end of the die hole (223) and is smaller at the top and larger at the bottom.

4. The die for punching and cutting the balancing air holes of an inner-punch basin stand according to claim 1, characterized in that: A protective pad (13) is fixed to the front end of the support plate (101).

5. The die for punching and cutting the balancing air holes of an inner-punch basin stand according to claim 1, characterized in that: The edges of the upper die positioning block (11) and the support plate (101) are formed with relief chamfers or relief fillets.

6. The die for punching and cutting the balancing air holes of an inner-punch basin stand according to claim 1, characterized in that: A detection hole is formed on the support positioning surface (221), a displacement sensor (23) is fixed in the detection hole, and the end of the detection rod of the displacement sensor (23) is arranged higher than the support positioning surface (221).

7. The die for punching and cutting the balancing air holes of an inner-punch basin stand according to claim 6, characterized in that: Two displacement sensors (23) are provided, and the two displacement sensors (23) are provided on the left and right.

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