Injection molding equipment for loudspeaker bracket production and use method thereof

Abstract

The invention relates to the technical field of injection molding, and discloses injection molding equipment for loudspeaker support production and a using method thereof.The injection molding equipment comprises a base, the top of the base is fixedly connected with a containing cylinder, and the top of the base is fixedly connected with a molding cylinder; materials needing injection molding are put into a containing groove formed by the top of a second piston plate, the inner wall of a containing cylinder and the outer wall of a molding cylinder, after material filling is completed, a power source of an electric telescopic rod is switched on, and the electric telescopic rod contracts to drive a U-shaped rod and a first piston plate to slide downwards along the outer wall of the molding cylinder; the outer wall of the first piston plate enters the inner wall of the containing cylinder, at the moment, the top of the containing groove is blocked by the first piston plate to form a closed environment, the pressure in the closed environment is converted from the air pressure to the high pressure along with downward movement of the first piston plate, and residual bubbles in raw materials are forced to be compressed and released through formation of the high pressure; the bubble removing process of the raw materials is achieved, and most fine bubbles of the raw materials are effectively removed.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding equipment, in particular to an injection molding equipment for producing a loudspeaker bracket and a use method thereof. Background Art

[0002] Plastic products are made of a mixture of synthetic resins and various additives, using methods such as injection, extrusion, pressing, and pouring. While plastic products are being formed, they also gain their final properties, so plastic molding is a key process in production. Injection molding, also known as injection molding, is a method of using an injection machine to quickly inject molten plastic into a mold and solidify it to obtain various plastic products.

[0003] In actual use, due to the presence of air in the mold cavity, when the air cannot be discharged in time, it is easy to cause bubbles or defects in the injection molded products. Most existing equipment discharges air through air holes or through the gaps in the mold, and the gas discharge effect is poor. In response to the above problems, the following solutions are proposed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an injection molding device for producing a speaker bracket, comprising a base, a receiving cylinder is fixedly connected to the top of the base, a molding cylinder is fixedly connected to the top of the base, a sliding ring is slidably connected to the outer wall of the molding cylinder, a piston plate 1 is fixedly connected to the side wall of the sliding ring, a feeding assembly is installed on the inner wall of the molding cylinder, and a discharging assembly is arranged on the inner wall of the base;

[0005] The pressure mechanism includes four spring telescopic rods fixedly connected to the top of the base, one end of the four spring telescopic rods away from the base is fixedly connected to the piston plate 2, the outer wall of the accommodating cylinder is fixedly connected to the electric telescopic rod, and the top of the electric telescopic rod is fixedly connected to the U-shaped rod;

[0006] The demoulding mechanism includes a hollow cylinder fixedly connected to the top of the base, a plurality of piston grooves are opened on the side wall of the hollow cylinder, and a piston plate is slidably connected to the inner wall of the plurality of piston grooves. When in use, the base is installed at the desired position, and the required injection material is passed through the Figure 3The route of middle G is invested into the gap between the accommodating cylinder and the molding cylinder. At this time, the top of the piston plate 2, the inner wall of the accommodating cylinder and the outer wall of the molding cylinder will form a accommodating groove with an open top. In the process of the raw material flowing downward, it will stay on the top of the piston plate 2. After the material filling is completed, the power of the electric telescopic rod is turned on. The electric telescopic rod contracts and drives the U-shaped rod and the piston plate 1 to slide downward along the outer wall of the molding cylinder. In this process, since the outer wall of the piston plate 1 enters the inner wall of the accommodating cylinder, the top of the accommodating groove is blocked by the piston plate to form a closed environment. As the piston plate 1 moves downward, the above closed environment will be gradually compressed, so that the pressure in the closed environment will change from this air pressure to high pressure. The formation of high pressure will force the residual bubbles in the raw material to be compressed and released, thereby realizing the defoaming process of the raw material and effectively removing most of the fine bubbles in the raw material.

[0007] Preferably, the material feeding assembly includes a material feeding port 1 provided on the side wall of the molding cylinder, a sliding ring groove is provided on the inner wall of the molding cylinder, and a material baffle plate is slidably connected to the inner wall of the sliding ring groove.

[0008] Preferably, the material feeding assembly also includes a compression spring fixedly connected to the bottom of the material baffle plate, the other end of the compression spring is fixedly connected to the inner wall of the sliding ring groove, and a second material feeding port is opened on the side wall of the material baffle plate.

[0009] Preferably, the feeding assembly also includes a fixed block fixedly connected to the side wall of the baffle plate, the outer wall of the fixed block is slidably connected to the inner wall of the feeding port 1, and a pressure ring is fixedly connected to the side wall of the fixed block. Utilizing the characteristic of high pressure in the above-mentioned closed environment, a piston plate 2 and a spring telescopic rod are arranged inside the equipment. When high pressure is formed in the closed environment, the gas released by the bubbles mostly moves upward and is separated from the raw materials in the closed space. As the electric telescopic rod contracts, the piston plate 1 continues to compress the closed space. When the compression reaches the maximum value, the piston plate 2 will slide downward along the outer wall of the molding cylinder. During the sliding of the piston plate 2, the bottom of the piston plate 2 will contact the top of the pressure ring, driving the pressure ring to move downward synchronously. The pressure ring drives the baffle plate and the feeding port 2 to slide downward along the inner wall of the sliding ring groove through the fixed block, presenting a Figure 9 In the state shown, the second feeding port will overlap with the first feeding port to form a discharge port. The raw materials in the high-pressure closed environment will enter the other side of the molding cylinder through the discharge port. The inner wall of the molding cylinder, the outer wall of the hollow cylinder and the top of the base will form a molding groove. The defoamed raw materials will enter the molding groove through the discharge port. Through the application of the above components, the traditional top-down feeding method is changed, and the high-pressure raw materials are transmitted from bottom to top, ensuring that when the raw materials enter the molding groove, external air is difficult to be mixed in the raw materials, affecting the product quality.

[0010] Preferably, the discharging assembly includes a plurality of air conveying grooves provided on the inner wall of the base, the air inlet of the air conveying groove is located between the accommodating cylinder and the molding cylinder, the other end of the air conveying groove is connected with the bottom of the hollow cylinder, and an air outlet groove is provided on the top of the inner wall of the air conveying groove. Utilizing the characteristic that the piston plate 2 slides downward under pressure, an air conveying groove and a demolding mechanism are arranged inside the equipment. When the piston plate 2 slides downward, the piston plate 2 squeezes the air at the bottom and transmits it to the inside of the hollow cylinder through the air conveying groove. As the air inside the hollow cylinder increases, the piston plate 3 moves outward along the inner wall of the piston groove, so that the outer wall of the piston plate 3 is flush with the outer wall of the hollow cylinder. As the raw material enters the molding groove and contacts with the hollow cylinder and the outer wall of the piston groove, the equipment will perform a natural cooling process. After the equipment completes cooling, the gas inside the hollow cylinder disappears as the piston plate 2 is reset, and the piston plate 3 is gradually reset under the push of the internal spring. At this time, the outer wall of the piston plate 3 will be away from the inner wall of the product, reducing the adhesion between the product and the mold, affecting the subsequent demolding efficiency.

[0011] Preferably, the discharging assembly also includes a blocking slider slidably connected to the inner wall of the air outlet groove, the bottom of the blocking slider is fixedly connected to a sliding block, a vertical air outlet groove is opened on the side wall of the sliding block, and the bottom of the sliding block is fixedly connected to a push spring.

[0012] Preferably, the discharging assembly also includes an L-shaped rod fixedly connected to the side wall of the air outlet vertical groove, one end of the U-shaped rod away from the electric telescopic rod is fixedly connected to the top of the piston plate one, the inner wall of the piston plate two is slidably connected to the outer wall of the molding cylinder, and the outer wall of the piston plate two is slidably connected to the inner wall of the accommodating cylinder. Utilizing the characteristics of the downward movement of the piston plate two and the formation of high air pressure inside the air delivery groove and the hollow cylinder, an L-shaped rod and a blocking slider are arranged inside the equipment. After the equipment is cooled, the electric telescopic rod generates a contraction force again, forcing the piston plate two to move downward and contact the top of the L-shaped rod. At this time, the L-shaped rod will drive the sliding block and the blocking slider to slide downward along the inner wall of the air outlet groove. At this time, the air inside the air delivery groove will be exhausted upward through the gap between the air outlet groove and the blocking slider and the air outlet vertical groove. At this time, the gas under high pressure will enter between the molding cylinder and the hollow cylinder, and push the molded product to move upward. In this process, the piston plate three will shrink along the inner wall of the piston groove, thereby improving the demoulding efficiency of the equipment. Through the application of the above components, the autonomous demoulding effect of the equipment is achieved.

[0013] A method for using an injection molding device for producing a speaker bracket comprises the following steps:

[0014] S1: When in use, the base is installed at the desired position, and the material to be injected is put into the gap between the receiving cylinder and the molding cylinder. At this time, the top of the second piston plate, the inner wall of the receiving cylinder and the outer wall of the molding cylinder will form a receiving groove with an open top;

[0015] S2: During the downward flow of the raw material, it will stay on the top of the second piston plate. After the material filling is completed, the power of the electric telescopic rod is turned on, and the electric telescopic rod contracts to drive the U-shaped rod and the first piston plate to slide downward along the outer wall of the molding cylinder;

[0016] S3: The outer wall of the piston plate 1 enters the inner wall of the receiving tube. At this time, the top of the receiving groove is blocked by the piston plate to form a closed environment. As the piston plate 1 moves downward, the above closed environment will be gradually compressed, so that the pressure in the closed environment changes from the current air pressure to the high pressure.

[0017] The present invention has the following beneficial effects:

[0018] (1) The present invention utilizes the characteristics of high-pressure degassing, and a piston plate 1 and a piston plate 2 are arranged inside the equipment. When in use, the base is installed at the required position, and the required injection molding material is passed through Figure 3 The route of middle G is invested into the gap between the accommodating cylinder and the molding cylinder. At this time, the top of the piston plate 2, the inner wall of the accommodating cylinder and the outer wall of the molding cylinder will form a accommodating groove with an open top. In the process of the raw material flowing downward, it will stay on the top of the piston plate 2. After the material filling is completed, the power of the electric telescopic rod is turned on. The electric telescopic rod contracts and drives the U-shaped rod and the piston plate 1 to slide downward along the outer wall of the molding cylinder. In this process, since the outer wall of the piston plate 1 enters the inner wall of the accommodating cylinder, the top of the accommodating groove is blocked by the piston plate to form a closed environment. As the piston plate 1 moves downward, the above closed environment will be gradually compressed, so that the pressure in the closed environment will change from this air pressure to high pressure. The formation of high pressure will force the residual bubbles in the raw material to be compressed and released, thereby realizing the defoaming process of the raw material and effectively removing most of the fine bubbles in the raw material.

[0019] (2) The present invention utilizes the characteristic of high pressure in the above-mentioned closed environment. A piston plate 2 and a spring telescopic rod are arranged inside the equipment. When high pressure is formed in the closed environment, the gas released by the bubbles mostly moves upward and is separated from the raw material in the closed space. As the electric telescopic rod contracts, the piston plate 1 continues to compress the closed space. When the compression reaches the maximum value, the piston plate 2 will slide downward along the outer wall of the molding cylinder. During the process of the piston plate 2 sliding downward, the bottom of the piston plate 2 will contact the top of the pressure ring, driving the pressure ring to move downward synchronously. The pressure ring drives the baffle plate and the feed port 2 to slide downward along the inner wall of the sliding ring groove through the fixed block, presenting a Figure 9In the state shown, the second feeding port will overlap with the first feeding port to form a discharge port. The raw materials in the high-pressure closed environment will enter the other side of the molding cylinder through the discharge port. The inner wall of the molding cylinder, the outer wall of the hollow cylinder and the top of the base will form a molding groove. The defoamed raw materials will enter the molding groove through the discharge port. Through the application of the above components, the traditional top-down feeding method is changed, and the high-pressure raw materials are transmitted from bottom to top, ensuring that when the raw materials enter the molding groove, external air is difficult to be mixed in the raw materials, affecting the product quality.

[0020] (3) The present invention utilizes the characteristic that the piston plate 2 slides downward under pressure, and an air conveying groove and a demolding mechanism are arranged inside the equipment. When the piston plate 2 slides downward, the piston plate 2 will squeeze the air at the bottom and transmit it to the inside of the hollow cylinder through the air conveying groove. As the air inside the hollow cylinder increases, the piston plate 3 will move outward along the inner wall of the piston groove, so that the outer wall of the piston plate 3 is flush with the outer wall of the hollow cylinder. As the raw material enters the molding groove and contacts the hollow cylinder and the outer wall of the piston groove, the equipment will perform a natural cooling process. After the equipment completes cooling, the gas inside the hollow cylinder disappears as the piston plate 2 is reset, and the piston plate 3 is gradually reset under the push of the internal spring. At this time, the outer wall of the piston plate 3 will be away from the inner wall of the product, reducing the adhesion between the product and the mold, affecting the subsequent demolding efficiency.

[0021] (4) The present invention utilizes the characteristics that the piston plate 2 moves downward and high air pressure is formed inside the air delivery groove and the hollow cylinder. An L-shaped rod and a blocking slider are arranged inside the equipment. After the equipment is cooled, the electric telescopic rod generates a contraction force again, forcing the piston plate 2 to move downward and contact the top of the L-shaped rod. At this time, the L-shaped rod will drive the sliding block and the blocking slider to slide downward along the inner wall of the air outlet groove. At this time, the air inside the air delivery groove will be exhausted upward through the gap between the air outlet groove and the blocking slider and the air outlet vertical groove. At this time, the gas under high pressure will enter between the molding cylinder and the hollow cylinder and push the molded product to move upward. In this process, the piston plate 3 will contract along the inner wall of the piston groove, thereby improving the demolding efficiency of the equipment. Through the application of the above components, the autonomous demolding effect of the equipment can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0023] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention;

[0024] Figure 2It is a cross-sectional schematic diagram of the pressure applying mechanism of the present invention;

[0025] Figure 3 It is a cross-sectional schematic diagram of the demoulding mechanism of the present invention;

[0026] Figure 4 For the present invention Figure 3 A is an enlarged schematic diagram;

[0027] Figure 5 For the present invention Figure 3 A magnified schematic diagram of B;

[0028] Figure 6 It is a cross-sectional schematic diagram of the material feeding assembly of the present invention;

[0029] Figure 7 It is a cross-sectional schematic diagram of the discharging assembly of the present invention;

[0030] Figure 8 For the present invention Figure 7 A magnified schematic diagram of middle C;

[0031] Fig. 9 For the present invention Figure 7 A magnified schematic diagram of D in the middle;

[0032] Fig.10 It is a schematic diagram of the working process of the present invention.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] In the figure: 1. base; 11. accommodating cylinder; 12. molding cylinder; 13. sliding ring; 14. piston plate one; 2. pressure mechanism; 21. spring telescopic rod; 22. piston plate two; 23. electric telescopic rod; 24. U-shaped rod; 3. demoulding mechanism; 31. hollow cylinder; 32. piston groove; 33. piston plate three; 4. feeding assembly; 41. feeding port one; 42. sliding ring groove; 43. baffle plate; 44. pressure spring; 45. feeding port two; 46. fixing block; 47. pressure ring; 5. discharging assembly; 51. air feeding groove; 52. air outlet groove; 53. blocking slider; 54. sliding block; 55. air outlet vertical groove; 56. pushing spring; 57. L-shaped rod. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] For example, see Figure 1- Figure 5 The present invention is an injection molding device for producing a speaker bracket, comprising a base 1, a receiving cylinder 11 is fixedly connected to the top of the base 1, a molding cylinder 12 is fixedly connected to the top of the base 1, a sliding ring 13 is slidably connected to the outer wall of the molding cylinder 12, a piston plate 14 is fixedly connected to the side wall of the sliding ring 13, a feeding component 4 is installed on the inner wall of the molding cylinder 12, and a discharging component 5 is arranged on the inner wall of the base 1;

[0037] The pressure mechanism 2 includes four spring telescopic rods 21 fixedly connected to the top of the base 1, one end of the four spring telescopic rods 21 away from the base 1 is fixedly connected to a piston plate 22, an electric telescopic rod 23 is fixedly connected to the outer wall of the accommodating cylinder 11, and a U-shaped rod 24 is fixedly connected to the top of the electric telescopic rod 23;

[0038] The demoulding mechanism 3 includes a hollow cylinder 31 fixedly connected to the top of the base 1, a plurality of piston grooves 32 are provided on the side wall of the hollow cylinder 31, and a piston plate 33 is slidably connected to the inner wall of the plurality of piston grooves 32. When in use, the base 1 is installed at the desired position, and the material to be injected is passed through the hollow cylinder 31. Figure 3 The route of middle G is invested into the gap between the accommodating cylinder 11 and the molding cylinder 12. At this time, the top of the piston plate 22, the inner wall of the accommodating cylinder 11 and the outer wall of the molding cylinder 12 will form a accommodating groove with an open top. In the process of the raw material flowing downward, it will stay on the top of the piston plate 22. After the material filling is completed, the power of the electric telescopic rod 23 is turned on. The electric telescopic rod 23 contracts and drives the U-shaped rod 24 and the piston plate 14 to slide downward along the outer wall of the molding cylinder 12. In this process, since the outer wall of the piston plate 14 enters the inner wall of the accommodating cylinder 11, the top of the accommodating groove is blocked by the piston plate 14 to form a closed environment. As the piston plate 14 moves downward, the above closed environment will be gradually compressed, so that the pressure in the closed environment will change from this air pressure to high pressure. The formation of high pressure will force the residual bubbles in the raw material to be compressed and released, thereby realizing the defoaming process of the raw material and effectively removing most of the fine bubbles in the raw material.

[0039] For example 2, please refer to Figure 6 - Fig.10 The present invention is an injection molding device for producing a speaker bracket. On the basis of the first embodiment, the feeding component 4 includes a feeding port 41 opened on the side wall of the molding cylinder 12, a sliding ring groove 42 is opened on the inner wall of the molding cylinder 12, and a baffle plate 43 is slidably connected to the inner wall of the sliding ring groove 42.

[0040] The material feeding assembly 4 further comprises a compression spring 44 fixedly connected to the bottom of the material baffle plate 43 , the other end of the compression spring 44 is fixedly connected to the inner wall of the sliding ring groove 42 , and a second material feeding port 45 is provided at the side wall of the material baffle plate 43 .

[0041] The feeding assembly 4 also includes a fixed block 46 fixedly connected to the side wall of the baffle plate 43, the outer wall of the fixed block 46 is slidably connected to the inner wall of the feeding port 41, and a pressure ring 47 is fixedly connected to the side wall of the fixed block 46. Taking advantage of the high pressure in the above-mentioned closed environment, a piston plate 22 and a spring telescopic rod 21 are arranged inside the equipment. When the high pressure is formed in the closed environment, the gas released by the bubbles mostly moves upward and is separated from the raw materials in the closed space. As the electric telescopic rod 23 contracts, the piston plate 14 continues to compress the closed space. When the compression reaches the maximum value, the piston plate 22 will slide downward along the outer wall of the molding cylinder 12, and in the process of the piston plate 22 sliding down, the bottom of the piston plate 22 will contact the top of the pressure ring 47, driving the pressure ring 47 to move downward synchronously, and the pressure ring 47 drives the baffle plate 43 and the feeding port 245 to slide downward along the inner wall of the sliding ring groove 42 through the fixed block 46, presenting a Figure 9 In the state shown, the feed port 2 45 will overlap with the feed port 1 41 to form a discharge port. The raw materials in the high-pressure closed environment will enter the other side of the molding tube 12 through the above discharge port. The inner wall of the molding tube 12, the outer wall of the hollow tube 31 and the top of the base 1 will form a molding groove. The raw materials that have been defoamed will enter the molding groove through the discharge port. Through the application of the above components, the traditional top-down feeding method is changed, and the high-pressure raw materials are transmitted from bottom to top, ensuring that when the raw materials enter the molding groove, external air is difficult to be mixed in the raw materials, affecting the product quality.

[0042] The discharge assembly 5 includes a plurality of air delivery grooves 51 provided on the inner wall of the base 1. The air inlet of the air delivery groove 51 is located between the accommodating cylinder 11 and the molding cylinder 12. The other end of the air delivery groove 51 is connected to the bottom of the hollow cylinder 31. An air outlet groove 52 is provided on the top of the inner wall of the air delivery groove 51. By utilizing the characteristic that the piston plate 22 slides downward under pressure, the air delivery groove 51 and the demoulding mechanism 3 are provided inside the device. When the piston plate 22 slides downward, the piston plate 22 transmits the air squeezed at the bottom to the inside of the hollow cylinder 31 through the air delivery groove 51. As the inside of the hollow cylinder 31 is compressed, the air is discharged from the bottom of the hollow cylinder 31. With the increase of internal air, the piston plate three 33 will move outward along the inner wall of the piston groove 32, so that the outer wall of the piston plate three 33 is flush with the outer wall of the hollow cylinder 31. As the raw material enters the molding groove and contacts the hollow cylinder 31 and the outer wall of the piston groove 32, the equipment will perform a natural cooling process. After the equipment completes cooling, the internal gas of the hollow cylinder 31 disappears with the reset of the piston plate two 22, and the piston plate three 33 is gradually reset under the push of the internal spring. At this time, the outer wall of the piston plate three 33 will be away from the inner wall of the product, reducing the adhesion between the product and the mold, affecting the subsequent demolding efficiency.

[0043] The discharging assembly 5 also includes a blocking slider 53 slidably connected to the inner wall of the air outlet groove 52, a sliding block 54 is fixedly connected to the bottom of the blocking slider 53, an air outlet vertical groove 55 is opened on the side wall of the sliding block 54, and a push spring 56 is fixedly connected to the bottom of the sliding block 54.

[0044] The discharging assembly 5 also includes an L-shaped rod 57 fixedly connected to the side wall of the air outlet vertical groove 55, and one end of the U-shaped rod 24 away from the electric telescopic rod 23 is fixedly connected to the top of the piston plate 14. The inner wall of the piston plate 22 is slidably connected to the outer wall of the molding cylinder 12, and the outer wall of the piston plate 22 is slidably connected to the inner wall of the accommodating cylinder 11. By utilizing the characteristics of the downward movement of the piston plate 22 and the high air pressure formed inside the air delivery groove 51 and the hollow cylinder 31, an L-shaped rod 57 and a blocking slider 53 are arranged inside the equipment. After the equipment is cooled, the electric telescopic rod 23 generates a contraction force again, forcing the piston plate 22 to move downward. Move downward and contact with the top of the L-shaped rod 57. At this time, the L-shaped rod 57 will drive the sliding block 54 and the blocking slider 53 to slide downward along the inner wall of the air outlet groove 52. At this time, the air inside the air supply groove 51 will be exhausted upward through the gap between the air outlet groove 52 and the blocking slider 53 and the air outlet vertical groove 55. At this time, the gas under high pressure will enter between the molding cylinder 12 and the hollow cylinder 31, and push the molded product to move upward. In this process, the piston plate three 33 will shrink along the inner wall of the piston groove 32 to improve the demolding efficiency of the equipment. Through the application of the above components, the autonomous demolding effect of the equipment can be achieved.

[0045] The method for using the injection molding device comprises the following steps:

[0046] S1: When in use, the base 1 is installed at the desired position, and the material to be injected is put into the gap between the receiving cylinder 11 and the molding cylinder 12. At this time, the top of the piston plate 22, the inner wall of the receiving cylinder 11 and the outer wall of the molding cylinder 12 will form a receiving groove with an open top;

[0047] S2: During the downward flow of the raw material, it will stay on the top of the second piston plate 22. After the material filling is completed, the power of the electric telescopic rod 23 is turned on, and the electric telescopic rod 23 contracts to drive the U-shaped rod 24 and the piston plate 14 to slide downward along the outer wall of the molding cylinder 12;

[0048] S3: The outer wall of the piston plate 14 enters the inner wall of the receiving tube 11. At this time, the top of the receiving groove is blocked by the piston plate 14 to form a closed environment. As the piston plate 14 moves downward, the above closed environment will be gradually compressed, so that the pressure in the closed environment changes from the current air pressure to the high pressure.

[0049] A specific application of this embodiment is: when in use, the base 1 is installed at a desired position, and the required injection molding material is passed through Figure 3The route of middle G is invested into the gap between the accommodating cylinder 11 and the molding cylinder 12. At this time, the top of the piston plate 22, the inner wall of the accommodating cylinder 11 and the outer wall of the molding cylinder 12 will form a accommodating groove with an open top. In the process of the raw material flowing downward, it will stay on the top of the piston plate 22. After the material filling is completed, the power of the electric telescopic rod 23 is turned on. The electric telescopic rod 23 contracts and drives the U-shaped rod 24 and the piston plate 14 to slide downward along the outer wall of the molding cylinder 12. In this process, since the outer wall of the piston plate 14 enters the inner wall of the accommodating cylinder 11, the top of the accommodating groove is blocked by the piston plate 14 to form a closed environment. As the piston plate 14 moves downward, the above closed environment will be gradually compressed, so that the pressure in the closed environment will change from this air pressure to high pressure. The formation of high pressure will force the residual bubbles in the raw material to be compressed and released, thereby realizing the defoaming process of the raw material and effectively removing most of the fine bubbles in the raw material.

[0050] Taking advantage of the high pressure characteristic of the above-mentioned closed environment, a piston plate 22 and a spring telescopic rod 21 are arranged inside the equipment. When high pressure is formed in the closed environment, the gas released by the bubbles mostly moves upward and is separated from the raw materials in the closed space. As the electric telescopic rod 23 contracts, the piston plate 14 continues to compress the closed space. When the compression reaches the maximum value, the piston plate 22 will slide downward along the outer wall of the molding cylinder 12. During the sliding of the piston plate 22, the bottom of the piston plate 22 will contact the top of the pressure ring 47, driving the pressure ring 47 to move downward synchronously. The pressure ring 47 drives the baffle plate 43 and the feed port 2 45 to slide downward along the inner wall of the sliding ring groove 42 through the fixed block 46, presenting a Figure 9In the state shown, the feed port 2 45 will overlap with the feed port 1 41 to form a discharge port. At this time, the raw materials in the high-pressure closed environment will enter the other side of the molding cylinder 12 through the above discharge port. At this time, the inner wall of the molding cylinder 12, the outer wall of the hollow cylinder 31 and the top of the base 1 will form a molding groove, and the raw materials that have completed defoaming will enter the molding groove through the discharge port. Through the application of the above components, the traditional top-to-bottom feeding method is changed, and the high-pressure raw materials are transmitted from bottom to top, ensuring that when the raw materials enter the molding groove, external air is difficult to be mixed in the raw materials and affect the product quality. Utilizing the characteristic that the piston plate 22 slides downward under pressure, an air delivery groove 51 and a demolding mechanism 3 are arranged inside the equipment. When the plug plate 22 slides downward, the piston plate 22 will squeeze the air at the bottom and transmit it to the inside of the hollow cylinder 31 through the air transmission groove 51. As the air inside the hollow cylinder 31 increases, the piston plate 33 will move outward along the inner wall of the piston groove 32, so that the outer wall of the piston plate 33 is flush with the outer wall of the hollow cylinder 31. As the raw material enters the molding groove and contacts the outer walls of the hollow cylinder 31 and the piston groove 32, the equipment will perform a natural cooling process. After the equipment completes cooling, the gas inside the hollow cylinder 31 disappears as the piston plate 22 is reset, and the piston plate 33 is gradually reset under the push of the internal spring. At this time, the outer wall of the piston plate 33 will be away from the inner wall of the product, reducing the adhesion between the product and the mold, affecting the subsequent demolding efficiency.

[0051] Taking advantage of the fact that the piston plate 22 moves downward and high air pressure is formed inside the air delivery groove 51 and the hollow cylinder 31, an L-shaped rod 57 and a blocking slider 53 are arranged inside the equipment. After the equipment is cooled down, the electric telescopic rod 23 generates a contraction force again, forcing the piston plate 22 to move downward and contact the top of the L-shaped rod 57. At this time, the L-shaped rod 57 will drive the sliding block 54 and the blocking slider 53 to slide downward along the inner wall of the air outlet groove 52. At this time, the air inside the air delivery groove 51 will be exhausted upward through the gap between the air outlet groove 52 and the blocking slider 53 and the air outlet vertical groove 55. At this time, the gas under high pressure will enter between the molding cylinder 12 and the hollow cylinder 31 and push the molded product to move upward. In this process, the piston plate 33 will shrink along the inner wall of the piston groove 32, thereby improving the demolding efficiency of the equipment. Through the application of the above components, the autonomous demolding effect of the equipment can be achieved.

[0052] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An injection molding device for producing a speaker bracket, comprising a base (1), a receiving cylinder (11) being fixedly connected to the top of the base (1), a molding cylinder (12) being fixedly connected to the top of the base (1), a sliding ring (13) being slidably connected to the outer wall of the molding cylinder (12), a piston plate (14) being fixedly connected to the side wall of the sliding ring (13), a feeding assembly (4) being installed on the inner wall of the molding cylinder (12), and a discharging assembly (5) being arranged on the inner wall of the base (1), characterized in that: Also includes: A pressure mechanism (2), the pressure mechanism (2) comprising four spring telescopic rods (21) fixedly connected to the top of the base (1), one end of the four spring telescopic rods (21) away from the base (1) being fixedly connected to a piston plate 2 (22), an electric telescopic rod (23) being fixedly connected to the outer wall of the accommodating cylinder (11), and a U-shaped rod (24) being fixedly connected to the top of the electric telescopic rod (23); The demoulding mechanism (3) comprises a hollow cylinder (31) fixedly connected to the top of the base (1), a plurality of piston grooves (32) are provided on the side wall of the hollow cylinder (31), and a piston plate three (33) is slidably connected to the inner walls of the plurality of piston grooves (32).

2. The injection molding equipment for producing a speaker bracket according to claim 1, characterized in that: The material feeding assembly (4) comprises a material feeding port (41) provided on the side wall of the molding cylinder (12), a sliding ring groove (42) provided on the inner wall of the molding cylinder (12), and a material blocking plate (43) slidably connected to the inner wall of the sliding ring groove (42).

3. The injection molding equipment for producing a speaker bracket according to claim 2, characterized in that: The material conveying assembly (4) also includes a compression spring (44) fixedly connected to the bottom of the material baffle plate (43), the other end of the compression spring (44) is fixedly connected to the inner wall of the sliding ring groove (42), and a second material conveying port (45) is provided on the side wall of the material baffle plate (43).

4. The injection molding equipment for producing a speaker bracket according to claim 3, characterized in that: The material feeding assembly (4) further comprises a fixed block (46) fixedly connected to the side wall of the material baffle plate (43), the outer wall of the fixed block (46) being slidably connected to the inner wall of the material feeding port (41), and a pressure ring (47) being fixedly connected to the side wall of the fixed block (46).

5. The injection molding equipment for producing a speaker bracket according to claim 4, characterized in that: The discharge assembly (5) comprises a plurality of gas delivery grooves (51) provided on the inner wall of the base (1); the gas inlet of the gas delivery groove (51) is located between the accommodating cylinder (11) and the molding cylinder (12); the other end of the gas delivery groove (51) is connected to the bottom of the hollow cylinder (31); and a gas outlet groove (52) is provided on the top of the inner wall of the gas delivery groove (51).

6. The injection molding equipment for producing a speaker bracket according to claim 5, characterized in that: The discharge assembly (5) further comprises a blocking slider (53) slidably connected to the inner wall of the air outlet groove (52); a sliding block (54) is fixedly connected to the bottom of the blocking slider (53); a vertical air outlet groove (55) is provided on the side wall of the sliding block (54); and a pushing spring (56) is fixedly connected to the bottom of the sliding block (54).

7. The injection molding equipment for producing a speaker bracket according to claim 6, characterized in that: The discharge assembly (5) also includes an L-shaped rod (57) fixedly connected to the side wall of the air outlet vertical groove (55), the end of the U-shaped rod (24) away from the electric telescopic rod (23) is fixedly connected to the top of the piston plate 1 (14), the inner wall of the piston plate 2 (22) is slidably connected to the outer wall of the molding cylinder (12), and the outer wall of the piston plate 2 (22) is slidably connected to the inner wall of the accommodating cylinder (11).

8. A method for using an injection molding device for producing a speaker bracket, using the injection molding device as claimed in claim 7, characterized in that: The following steps are included: S1: When in use, the base (1) is installed at a desired position, and the material to be injected is put into the gap between the receiving cylinder (11) and the molding cylinder (12). At this time, the top of the second piston plate (22), the inner wall of the receiving cylinder (11) and the outer wall of the molding cylinder (12) form a receiving groove with an open top; S2: During the downward flow of the raw material, it will stay on the top of the second piston plate (22). After the material filling is completed, the power of the electric telescopic rod (23) is turned on, and the electric telescopic rod (23) contracts to drive the U-shaped rod (24) and the first piston plate (14) to slide downward along the outer wall of the molding cylinder (12); S3: The outer wall of the piston plate 1 (14) enters the inner wall of the receiving tube (11). At this time, the top of the receiving groove is blocked by the piston plate 1 (14) to form a closed environment. As the piston plate 1 (14) moves downward, the closed environment is gradually compressed, causing the pressure in the closed environment to change from the current air pressure to the high pressure.

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