Injection molding equipment for producing speaker brackets and method of using the same

Abstract

The present invention relates to the field of injection molding technology, and discloses an injection molding device for producing a loudspeaker bracket and a method of using the same, comprising a base, a accommodating cylinder fixedly connected to the top of the base, and a molding cylinder fixedly connected to the top of the base. When in use, the material required for injection molding is put into the accommodating groove formed by the top of the second piston plate, the inner wall of the accommodating cylinder and the outer wall of the molding cylinder. 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 piston plate 1 to slide downward along the outer wall of the molding cylinder. 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 1 to form a closed environment. As the piston plate 1 moves downward, the pressure in the closed environment is converted 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.

Description

Technical Field

[0001] The present 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 from a mixture of synthetic resins and various additives through methods such as injection, extrusion, pressing, and casting. Since plastic products achieve their ultimate properties while being formed, this process is a key manufacturing process. Injection molding, also known as injection molding, uses an injection molding machine to rapidly inject molten plastic into a mold, where it solidifies to produce 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. Existing equipment mostly discharges air through air holes or gaps in the mold, but the gas discharge effect is poor. To address the above problems, the following solutions are proposed. Summary of the Invention

[0004] 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 fixedly connected to the top of the base, a molding cylinder fixedly connected to the top of the base, a sliding ring slidably connected to the outer wall of the molding cylinder, a piston plate 1 fixedly connected to the side wall of the sliding ring, a material feeding assembly installed on the inner wall of the molding cylinder, and a material discharging assembly provided 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 an electric telescopic rod, and the top of the electric telescopic rod is fixedly connected to a 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 in the desired position and the material to be injected is passed through the Figure 3The route of middle G is put 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 raw materials flowing downward, they 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, and 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 tiny 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 is slidably connected to the inner wall of the sliding ring groove.

[0008] Preferably, the material feeding assembly further comprises 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 provided at 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, and a pressure ring is fixedly connected to the side wall of the fixed block. Utilizing the characteristic of the high pressure presented by the above-mentioned closed environment, a piston plate 2 and a spring telescopic rod are provided 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 press 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. In the process of the piston plate 2 sliding down, 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 above 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 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-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] The top of the inner wall of the air delivery groove is provided with an air outlet, and the bottom of the air delivery groove is connected with the bottom of the hollow cylinder. The air outlet groove is provided at the top of the inner wall of the air delivery groove. Utilizing the characteristic that the piston plate 2 slides downward under pressure, an air delivery groove and a demolding mechanism are provided 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 delivery 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. 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] When the cam is in the air, the piston plate is moved downwards and the air pressure inside the cam is increased, and the L-shaped rod is driven by the piston to move upwards, thereby improving the demolding efficiency of the equipment.

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

[0014] S1: When in use, install the base in the desired position and put the required injection molding material into the gap between the accommodating cylinder and the molding cylinder. At this time, the top of the second piston plate, the inner wall of the accommodating cylinder and the outer wall of the molding cylinder will form an open-top accommodating groove;

[0015] S2: When the raw material flows 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.

[0016] S3: The outer wall of the piston plate 1 enters the inner wall of the accommodating cylinder. At this time, 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, causing the pressure in the closed environment to change 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 defoaming, and a piston plate 1 and a piston plate 2 are provided inside the equipment. When in use, the base is installed in the desired position, and the material to be injected is passed through the piston plate 1 and the piston plate 2. Figure 3 The route of middle G is put 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 raw materials flowing downward, they 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, and 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 tiny bubbles in the raw material.

[0019] (2) The present invention utilizes the characteristic of the closed environment presenting high pressure, and a piston plate 2 and a spring telescopic rod are provided 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 down, 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 the following 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 above 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 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-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 demoulding mechanism are provided 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 demoulding 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 provided 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 demoulding efficiency of the equipment. Through the application of the above components, the autonomous demoulding 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 following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without 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 middle B;

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

[0029] Figure 7 This is a schematic cross-sectional view of a discharge assembly of the present invention;

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

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

[0032] Figure 10 Schematic diagram of the workflow of the present invention.

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

[0034] In the figure: 1. Base; 11. Accommodating cylinder; 12. Molding cylinder; 13. Sliding ring; 14. Piston plate one; 2. Pressurizing mechanism; 21. Spring telescopic rod; 22. Piston plate two; 23. Electric telescopic rod; 24. U-shaped rod; 3. Demolding 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. Fixed 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. Push spring; 57. L-shaped rod. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0036] For example 1, please refer to 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 fixedly connected to the top of the base 1, a molding cylinder 12 fixedly connected to the top of the base 1, a sliding ring 13 slidably connected to the outer wall of the molding cylinder 12, a piston plate 14 fixedly connected to the side wall of the sliding ring 13, a feeding component 4 installed on the inner wall of the molding cylinder 12, and a discharging component 5 provided 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. The ends of the four spring telescopic rods 21 away from the base 1 are fixedly connected to the piston plate 22. The outer wall of the accommodating cylinder 11 is fixedly connected to an electric telescopic rod 23. The top of the electric telescopic rod 23 is fixedly connected to a U-shaped rod 24.

[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 opened 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 in the desired position and the material to be injected is passed through the hollow cylinder 31. Figure 3 The route of middle G is put 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 at 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 - Figure 10 The present invention is an injection molding device for producing speaker brackets. On the basis of embodiment one, the feeding component 4 includes a feeding port 41 opened on the side wall of the molding cylinder 12, and a sliding ring groove 42 is opened on the inner wall of the molding cylinder 12. A baffle plate 43 is slidably connected to the inner wall of the sliding ring groove 42.

[0040] The feeding assembly 4 further includes a compression spring 44 fixedly connected to the bottom of the 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 feeding port 45 is provided on the side wall of the 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 1 41, and a pressure ring 47 is fixedly connected to the side wall of the fixed block 46. Taking advantage of the high pressure characteristic of the above-mentioned closed environment, a piston plate 22 and a spring telescopic rod 21 are provided 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 23 contracts, the piston plate 14 continues to press 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. 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. The pressure ring 47 drives the baffle plate 43 and the feeding port 2 45 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. 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-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 equipment. 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 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 as the piston plate two 22 is reset, 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, the bottom of the blocking slider 53 is fixedly connected to a sliding block 54, a vertical air outlet groove 55 is opened on the side wall of the sliding block 54, and the bottom of the sliding block 54 is fixedly connected to a push spring 56.

[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 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 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, the 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 provided 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. It moves downward and contacts 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 33 will shrink along the inner wall of the piston groove 32, thereby improving the demoulding efficiency of the equipment. Through the application of the above components, the autonomous demoulding effect of the equipment can be achieved.

[0045] The method for using the injection molding device includes 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 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 an open-top accommodating groove;

[0047] S2: As the raw material flows downward, it stays 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. 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.

[0048] S3: The outer wall of the piston plate 14 enters the inner wall of the accommodating tube 11. At this time, 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 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 the desired position, and the required injection molding material is passed through Figure 3The route of middle G is put 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 at 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 provided 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. 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. 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 the following 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-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 and affect the product quality. By utilizing the characteristic that the above piston plate 22 slides downward under pressure, an air delivery groove 51 and a demoulding mechanism 3 are provided 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 wall 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 gradually resets 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 characteristics 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 provided 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 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 demoulding efficiency of the equipment. Through the application of the above components, the autonomous demoulding effect of the equipment can be achieved.

[0052] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An injection molding device for producing a loudspeaker bracket, comprising a base (1), a accommodating cylinder (11) fixedly connected to the top of the base (1), a molding cylinder (12) fixedly connected to the top of the base (1), a sliding ring (13) slidably connected to the outer wall of the molding cylinder (12), a piston plate (14) fixedly connected to the side wall of the sliding ring (13), a feeding assembly (4) installed on the inner wall of the molding cylinder (12), and a discharging assembly (5) provided 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); A demoulding mechanism (3), the demoulding mechanism (3) comprising a hollow cylinder (31) fixedly connected to the top of the base (1), a plurality of piston grooves (32) being provided on the side wall of the hollow cylinder (31), and a piston plate (33) being slidably connected to the inner walls of the plurality of piston grooves (32); 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) being located between the accommodating cylinder (11) and the shaping cylinder (12), the other end of the air delivery groove (51) being connected to the bottom of the hollow cylinder (31), and an air outlet groove (52) being provided on the top of the inner wall of the air delivery groove (51); 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) being fixedly connected to the bottom of the blocking slider (53), a vertical air outlet groove (55) being provided on the side wall of the sliding block (54), and a push spring (56) being fixedly connected to the bottom of the sliding block (54); The discharge assembly (5) further includes an L-shaped rod (57) fixedly connected to the side wall of the air outlet vertical groove (55), 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 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).

2. The injection molding equipment for producing a loudspeaker bracket according to claim 1, characterized in that: The feeding assembly (4) includes a 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 baffle plate (43) slidably connected to the inner wall of the sliding ring groove (42).

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

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

5. A method for using an injection molding device for producing a speaker bracket, using the injection molding device according to claim 4, characterized in that: The following steps are included: S1: When in use, the base (1) is installed in 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 second 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; 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 supply of the electric telescopic rod (23) is turned on, and the electric telescopic rod (23) contracts, driving 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 will be gradually compressed, causing the pressure in the closed environment to change to high pressure.

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