Die head for voice diaphragm forming

Abstract

The utility model relates to the field of die heads, and discloses a die head for voice diaphragm forming, which comprises a base, a bottom die is fixedly mounted at the top of the base, a top die is arranged above the bottom die, a top connecting rod is fixedly mounted at the top of the top die, and a cutting ring is sleeved on the outer side of the bottom die. And a driving structure is arranged in the base and used for driving the cutting ring to conduct cutting motion upwards, and through the cutting ring structure driven by the air cylinder, efficient and accurate cutting of formed redundant materials can be achieved. Compared with manual cutting, the cutting efficiency is greatly improved, meanwhile, the consistency of the cutting size is guaranteed, the influence of cutting deviation on the overall quality of the voice diaphragm is avoided, and the yield of voice diaphragm products is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould head field, specifically is a mould head for sound film forming. BACKGROUND

[0002] In modern acoustic equipment, sound film as key component, its forming quality directly influences the propagation and restoration effect of sound. With the continuous progress of science and technology, the performance requirement of sound film is increasing, such as lighter, higher strength, higher sensitivity etc., which promotes the continuous development of sound film forming process.

[0003] The traditional sound film forming method exposes many problems in the actual production process. On the one hand, in the material shaping extrusion link, the shaping effect of the mold to the material is poor, it is difficult to meet the high-precision sound film shape requirement, resulting in the sound film produced in the sound quality performance exists defects. On the other hand, for the cutting of the excess material after forming, there is lack of efficient and accurate way, manual cutting not only low efficiency, but also easy to cause cutting size deviation, affect the overall quality and consistency of sound film. In addition, in the demolding process, the existing technology often appears the situation that the sound film is adhered to the mold, not only increases the production difficulty, but also easily damages the formed sound film, reduces the production efficiency and product qualification rate, for this purpose, we put forward a kind of mould head for sound film forming. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a mould head for sound film forming, which solves the above problems.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a mould head for sound film forming, comprising a base, a bottom mold is fixedly installed at the top of the base, a top mold is arranged above the bottom mold, a top connecting rod is fixedly installed at the top of the top mold, a cutting ring is sleeved on the outer side of the bottom mold, a driving structure is arranged in the base, and the driving structure is used for driving the cutting ring to cut upward.

[0006] Preferably, the driving structure comprises a gas cylinder and a connecting assembly, the connecting assembly is connected with the cutting ring, and the connecting assembly and the telescopic shaft of the gas cylinder are fixedly connected together, and the gas cylinder is fixedly installed on the bottom inner wall of the base.

[0007] Preferably, the connecting assembly comprises a cross bar and two connecting plates, two openings are formed in the base, the connecting plates are arranged in the openings, the top of the connecting plates is fixedly connected with the bottom of the cutting ring, the lower end of the connecting plates passes through the openings and is fixedly connected with the cross bar, and the cross bar is fixedly connected with the output shaft of the gas cylinder.

[0008] Preferably, the cutting ring is annular, and a cutting edge is arranged at one end of the cutting ring for cutting and trimming.

[0009] Preferably, an annular groove is formed on the inner wall of the cavity of the bottom mold, and an ejection assembly is arranged in the annular groove.

[0010] Preferably, the ejection assembly comprises an inner circular plug, a plug rod, a top block and a spring, the inner circular plug is fixedly installed in the annular groove, the plug rod is inserted into the inner circular plug, the top block is fixedly installed on the top of the plug rod, the top block is circular and the side surface of the top block is in close contact with the inner wall of the annular groove, the spring is sleeved on the outer side of the inner circular plug, and the top of the spring is fixedly connected with the bottom of the top block.

[0011] Compared with the prior art, the die head for sound film forming has the following beneficial effects:

[0012] The precise cooperation of the top mold and the bottom mold can better meet the requirement of high-precision sound film shape during material shaping and extrusion, ensure the shape accuracy of the sound film, reduce sound quality defects caused by shape deviation, improve the acoustic performance of the sound film, and effectively improve the propagation and restoration effect of sound.

[0013] Efficient and accurate cutting: the cutting ring structure driven by the air cylinder can realize efficient and accurate cutting of the excess material after forming. Compared with manual cutting, the cutting efficiency is greatly improved, the consistency of the cutting size is ensured, the influence of cutting deviation on the overall quality of the sound film is avoided, and the yield of the sound film product is improved.

[0014] Convenient demolding: the ejection assembly arranged in the annular groove of the inner wall of the cavity of the bottom mold automatically ejects the formed sound film after cutting by using the elastic force of the spring, effectively solving the problem of adhesion of the sound film to the mold. This not only reduces the production difficulty, but also avoids damage to the sound film during demolding, further ensures the quality of the sound film, and improves the production efficiency.

[0015] Reduced production cost: the die head for sound film forming improves the yield and production efficiency of the sound film, reduces the increase in cost caused by product quality problems and production process loss, reduces the production cost of the sound film as a whole, and enhances the competitiveness of the product in the market.

[0016] Stable and reliable structure: the base provides stable support for the whole die head, the connecting assembly ensures the cooperative work between the components, the overall structure design is reasonable, stable and reliable, the equipment failure and maintenance frequency are reduced, and the continuity of production is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the utility model;

[0018] Figure 2 It is a top view schematic diagram of the utility model;

[0019] Figure 3 It is Figure 2 A-A sectional view schematic diagram in it;

[0020] Figure 4 It is Figure 3 A-A sectional view schematic diagram in it;

[0021] Figure 5 It is Figure 3 A-A sectional view schematic diagram in it.

[0022] In the drawing: 1, base; 2, cylinder; 3, cutting ring; 4, top die; 5, top connecting rod; 6, crossbar; 7, opening; 8, connecting plate; 9, bottom die; 10, annular groove; 11, inner circular plug; 12, plug-in rod; 13, top block; 14, spring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Please refer to Figures 1-5 , a sound film forming die, including base 1, the top of base 1 is fixedly installed with bottom die 9, the top of bottom die 9 is provided with top die 4, the top of top die 4 is fixedly installed with top connecting rod 5, the outer side of bottom die 9 is sleeved with cutting ring 3, the inside of base 1 is provided with driving structure, driving structure is used to drive cutting ring 3 to cut upwards, when in use, the material needing die casting is placed between top die 4 and bottom die 9, then is placed on bottom die 9, at this time, hydraulic cylinder connected with top connecting rod 5 pushes top connecting rod 5 downwards, at this time, top connecting rod 5 moves downwards, cooperates bottom die 9 to shape extrusion to material, after extrusion, driving structure is started to drive cutting ring 3 to move upwards, and the material located outside the cavity of top die 4 and bottom die 9 is cut.

[0025] Further, driving structure includes cylinder 2 and connecting assembly, connecting assembly is connected with cutting ring 3, and connecting assembly and the telescopic shaft of cylinder 2 are fixedly connected together, cylinder 2 is fixedly installed on the bottom inner wall of base 1.

[0026] Further, the connecting assembly comprises the cross bar 6 and two connecting plates 8, two openings 7 are formed on the base 1, the connecting plates 8 are arranged inside the openings 7, and the top of the connecting plates 8 is fixedly connected with the bottom of the cutting ring 3, the lower end of the connecting plates 8 penetrates through the openings 7 and is fixedly connected with the cross bar 6, and the cross bar 6 is fixedly connected with the output shaft of the air cylinder 2, when it is needed to cut the side of the material after stamping, the air cylinder 2 is started, the output shaft of the air cylinder 2 drives the cross bar 6 to move downward, and then the cutting ring 3 cuts the side of the material.

[0027] Further, the cutting ring 3 is annular, and a cutting edge is arranged at one end of the cutting ring 3 for cutting.

[0028] Further, an annular groove 10 is formed on the inner wall of the mold cavity of the bottom mold 9, and an ejection assembly is arranged inside the annular groove 10.

[0029] Further, the ejection assembly comprises an inner circular plug 11, a plug rod 12, a top block 13 and a spring 14, the inner circular plug 11 is fixedly installed inside the annular groove 10, the plug rod 12 is inserted into the inner circular plug 11, the top block 13 is fixedly installed on the top of the plug rod 12, the top block 13 is circular, and the side surface of the top block 13 is in close contact with the inner wall of the annular groove 10, the spring 14 is sleeved on the outer side of the inner circular plug 11, and the top of the spring 14 is fixedly connected with the bottom of the top block 13, when the spring 14 normally rebounds, the top block 13 is located inside the mold cavity, and after cutting, the top mold 4 moves upward, and then the formed diaphragm inside the mold cavity of the bottom mold 9 is lifted by the top block 13 under the rebound of the spring 14, so that demolding is realized.

[0030] Structural description:

[0031] The base 1 is a basic support component of the whole die head, and provides a mounting and fixing platform for other components. The inside of the base 1 is used for mounting a driving structure (such as the air cylinder 2), the air cylinder 2 is fixedly installed on the inner bottom wall of the base 1, and two openings 7 are further formed on the base 1 for the penetration and connection of the connecting plates 8.

[0032] The air cylinder 2 is a power source of the driving structure, and is fixedly installed on the inner bottom wall of the base 1. Through the extension and retraction movement of the extension and retraction shaft of the air cylinder 2, the connecting assembly (the cross bar 6, the connecting plates 8, etc.) is moved, so as to drive the cutting ring 3 to move upward for cutting movement, thereby realizing the cutting of the side of the material after stamping.

[0033] Cutting ring 3: ring-shaped, one end of which is provided with a cutting edge for cutting. Its main function is to cut the excess material outside the cavity of the top die 4 and the bottom die 9 after the material shaping and extrusion is completed. The outside of the cutting ring 3 is fixedly connected to the top of the connecting plate 8, and is connected to the telescopic shaft of the air cylinder 2 through a connecting assembly, and moves up and down under the drive of the air cylinder 2.

[0034] Top die 4: located above the bottom die 9, and the top connecting rod 5 is fixedly installed on the top. During the sound film forming process, the hydraulic cylinder connected to the top connecting rod 5 pushes the top connecting rod 5 downward, and the top die 4 moves downward accordingly, cooperating with the bottom die 9 to shape and extrude the material placed between them, so that the material is shaped into the required sound film shape.

[0035] Top connecting rod 5: connected to the hydraulic cylinder at the top and fixedly connected to the top die 4 at the bottom. Its function is to transmit the power of the hydraulic cylinder and transmit the pushing force of the hydraulic cylinder to the top die 4, so that the top die 4 can move downward to extrude and shape the material.

[0036] Crossbar 6: part of the connecting assembly, fixedly connected with the output shaft of the air cylinder 2. At the same time, the two ends of the crossbar 6 are fixedly connected with the lower ends of the two connecting plates 8 respectively, and when the output shaft of the air cylinder 2 drives the crossbar 6 to move up and down, the connecting plates 8 drive the cutting ring 3 to move synchronously.

[0037] Opening 7: provided on the base 1, the number is two. The function of the opening 7 is to provide a passage for the connecting plate 8 to move up and down inside the base 1, while ensuring the connection of the connecting plate 8 with the crossbar 6 and the normal movement of the cutting ring 3.

[0038] Connecting plate 8: part of the connecting assembly, provided inside the opening 7. The top of the connecting plate 8 is fixedly connected with the bottom of the cutting ring 3, and the lower end passes through the opening 7 and is fixedly connected with the crossbar 6. Its function is to connect the cutting ring 3 with the crossbar 6, realize the power transmission of the air cylinder 2, and make the cutting ring 3 move up and down under the drive of the air cylinder 2.

[0039] Bottom die 9: fixedly installed on the top of the base 1, cooperating with the top die 4 to shape and extrude the material. The annular groove 10 is provided on the inner wall of the cavity of the bottom die 9, which is used to install the ejection assembly to help the sound film to be demolded after shaping. During the sound film forming process, the material placed on the bottom die 9 is shaped in the cavity under the extrusion of the top die 4.

[0040] Annular groove 10: opened on the inner wall of the cavity of the bottom mold 9, used for installing the ejection assembly (internal circular block 11, plug-in rod 12, ejector block 13 and spring 14). The annular groove 10 provides a mounting space for the ejection assembly, and ensures that the ejector block 13 can move normally in the groove, while the side of the ejector block 13 keeps in contact with the inner wall of the annular groove 10, ensuring the ejection effect.

[0041] Internal circular block 11: fixedly installed in the internal annular groove 10, used for inserting the plug-in rod 12. The internal circular block 11 provides support and guidance for the plug-in rod 12, enabling the plug-in rod 12 to move up and down in its interior, while ensuring the stability of the ejector block 13 during movement.

[0042] Plug-in rod 12: inserted into the internal circular block 11, and the top is fixedly connected with the ejector block 13. Its function is to connect the ejector block 13 and the internal circular block 11, and transfer the elastic force of the spring 14 to the ejector block 13, so that the ejector block 13 can move up and down under the action of the spring 14, realizing the ejection demolding of the formed acoustic film.

[0043] Ejector block 13: circular, the top is fixedly connected with the plug-in rod 12, and the side keeps in contact with the inner wall of the annular groove 10. When the spring 14 normally rebounds, the ejector block 13 is located in the interior of the cavity; after cutting, the top mold 4 moves upward, the formed acoustic film is lifted by the ejector block 13 under the rebounding action of the spring 14, realizing demolding.

[0044] Spring 14: sleeved on the outside of the internal circular block 11, and the top is fixedly connected with the bottom of the ejector block 13. The function of the spring 14 is to provide elastic force, and during the material forming and cutting process, the spring 14 is in a compressed state; after the top mold 4 moves upward, the spring 14 rebounds and pushes the ejector block 13 to move upward, ejecting the formed acoustic film out of the cavity of the bottom mold 9, completing the demolding operation.

[0045] Working principle: when in use, the material to be pressure cast is placed between the top mold 4 and the bottom mold 9, and then placed on the bottom mold 9, at this time the hydraulic cylinder connected with the top connecting rod 5 pushes the top connecting rod 5 downward, at this time the top connecting rod 5 moves downward, cooperating with the bottom mold 9 to shape and extrude the material, after the extrusion is completed, the driving structure is started to drive the cutting ring 3 to move upward, cutting the material located outside the cavity of the top mold 4 and the bottom mold 9.

[0046] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A mold for sound film molding, comprising a base (1), characterized in that, The top of the base (1) is fixedly provided with a bottom mold (9), the top of the bottom mold (9) is provided with a top mold (4), the top of the top mold (4) is fixedly provided with a top connecting rod (5), the outer side of the bottom mold (9) is sleeved with a cutting ring (3), and the inside of the base (1) is provided with a driving structure for driving the cutting ring (3) to move upward.

2. The diaphragm forming die of claim 1, wherein: The driving structure comprises a gas cylinder (2) and a connecting assembly, the connecting assembly is connected with the cutting ring (3), and the connecting assembly and the telescopic shaft of the gas cylinder (2) are fixedly connected together, and the gas cylinder (2) is fixedly installed on the bottom inner wall of the base (1).

3. The diaphragm forming die of claim 2, wherein: The connecting assembly comprises a cross rod (6) and two connecting plates (8), two openings (7) are formed in the base (1), the connecting plates (8) are arranged in the openings (7), the top of the connecting plates (8) is fixedly connected with the bottom of the cutting ring (3), the lower end of the connecting plates (8) penetrates through the openings (7) and is fixedly connected with the cross rod (6), and the cross rod (6) is fixedly connected with the output shaft of the gas cylinder (2).

4. The diaphragm forming die of claim 1, wherein: The cutting ring (3) is annular, and one end of the cutting ring (3) for cutting and cutting is provided with a cutting edge.

5. The diaphragm forming die of claim 1, wherein: An annular groove (10) is formed in the inner wall of the mold cavity of the bottom mold (9), and an ejection assembly is arranged in the annular groove (10).

6. The diaphragm forming die of claim 5, wherein: The ejection assembly comprises an inner circular plug (11), a plug rod (12), a top block (13) and a spring (14), the inner circular plug (11) is fixedly installed in the annular groove (10), the inner circular plug (11) is inserted with the plug rod (12), the top of the plug rod (12) is fixedly provided with the top block (13), the top block (13) is circular, and the side surface of the top block (13) is attached to the inner wall of the annular groove (10), the outer side of the inner circular plug (11) is sleeved with the spring (14), and the top of the spring (14) is fixedly connected with the bottom of the top block (13).

Images