Precise ceramic injection molding device

Abstract

The utility model provides a precise ceramic injection molding device and belongs to the technical field of molding devices. Comprising a driving block mounted in a forming device; the multiple piston blocks are arranged, and the multiple piston blocks are installed in the driving block in a sliding mode; the air tap is mounted on the driving block, and the air tap is used for being externally connected with an air inflation and exhaust device; the multiple ejector rods are detachably installed on the driving block, and the ejector rods are used for demolding of the ceramic part; and the piston block is used for pushing the ejector rod to demold the ceramic part. Through cooperation of the ejector rod, the fixing plate, the ejector plate, the piston rod, the piston block, the driving block, the air tap and other structures, the aim of avoiding direct contact between the surface of a ceramic part and a rigid part in the demolding process is achieved; and by means of the synergistic effect of the contact block, the ejector rod and other structures, the purposes of dispersing the ejection force and avoiding overlarge local stress of the ceramic piece are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to forming device technical field, especially to the precision ceramic injection moulding device. BACKGROUND

[0002] In modern industrial production, precision ceramics have been widely used in many fields such as electronics, aerospace, medical treatment and the like due to their excellent high-temperature resistance, wear resistance, corrosion resistance and good insulation and the like. With the increasing demand for precision ceramic products in various industries, the requirements for its forming process and quality are becoming increasingly stringent.

[0003] However, in the traditional precision ceramic injection moulding device, the demoulding is realized by relying on the mechanical hard top mode after the injection moulding process is completed, and the ejector pin directly acts on the ceramic part under the drive of the mechanical structure. This ejection mode is prone to scratch the surface of the ceramic part during the ejection process, resulting in the damage of the appearance, thereby affecting the qualified rate and production efficiency of the product. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is to provide a precision ceramic injection moulding device to solve the technical problem that the traditional precision ceramic injection moulding device is prone to scratch the surface of the ceramic part during demoulding, resulting in the damage of the appearance, and when the ejector pin is used for demoulding, the ceramic part is brittle and the stress point is small, which is prone to cause the local stress concentration of the ceramic part, resulting in the damage such as cracks and breakage.

[0005] Technical solution: To achieve the above purpose, the utility model discloses the following technical scheme: precise ceramic injection molding device, including: drive block, install in the molding device, piston block, be equipped with a plurality of, and a plurality of piston block sliding installation is in drive block, air nozzle, install on drive block, the air nozzle is used for external connection of the inflation and exhaust device, the top rod is equipped with a plurality of, and a plurality of top rod can be detachably installed on drive block, the top rod is used for ceramic piece demolding, the piston block is used for pushing the top rod to demold ceramic piece, the inflation and exhaust device is used for controlling piston block to go up or go down, wherein the shape and size of drive block are according to the internal space of molding device and demolding power layout design, can adopt high-strength alloy material, can bear the inflation and exhaust pressure and the acting force of piston block reciprocating motion piston block quantity is determined according to the size of ceramic piece, shape and required balanced ejection force, and multiple piston blocks can more evenly transmit power, the air nozzle and external connection inflation and exhaust device can adopt quick plug connector connection, convenient maintenance and replacement device, the top rod can adopt detachable installation mode of screw connection, facilitate quick dismounting and installation when its wear or need to replace different specifications, the internal structure design of drive block ensures that piston block slides smoothly, and the inner wall is treated with smoothness. The piston block selects the material with good wear resistance and low friction coefficient, the air nozzle interface specification is matched with commonly used inflation and exhaust device, has good sealing property, and the inflation and exhaust device can select small air compressor, micro vacuum pump or vacuum generator etc., and the diameter and length of top rod are calculated and determined according to the actual situation of ceramic piece and mould.

[0006] In further embodiments, the core is stably installed in the core fixing plate in the molding device, and the core is used for ceramic piece molding, wherein the core can be made by high-precision numerical control processing to ensure the size precision and surface quality of the internal molding cavity; the core fixing plate can be made of thick metal plate and is tightly connected with the main frame of the molding device by a plurality of bolts to ensure that the core does not displace during injection molding and demolding; the core is made of mold steel material with good thermal stability and strong wear resistance; the installation precision of the core in the core fixing plate is extremely high to ensure the accurate position of the molding cavity; and the thickness of the core fixing plate is determined according to the size of the molding device and the pressure borne by the core.

[0007] In further embodiments, the air cavity is opened in a plurality of positions corresponding to the positions of the piston blocks, and the piston blocks and the air cavities are adapted, wherein the air cavities are opened to match the movement of the piston blocks, and the shape and size thereof are accurately adapted to the piston blocks to ensure that the gas can efficiently drive the piston blocks to move; the inner wall of the air cavity is finely processed and polished to reduce the gas flow resistance and the friction of the piston blocks; the inner wall of the air cavity is smooth, the diameter of the air cavity is adapted to the outer diameter of the piston blocks to ensure that the piston blocks can flexibly slide and have good sealing property; and the depth of the air cavity is designed according to the stroke of the piston blocks and the required gas compression amount.

[0008] In a further embodiment, an air passage is arranged in the driving block, the air passage is in communication with the plurality of air cavities, the air passage is in communication with the air nozzle, and the air passage is used for the inflation and deflation device to inflate or deflate the air cavities, wherein the air passage serves as a gas transmission channel, and the design of the air passage takes into account the gas flow rate, pressure loss, and connection mode with the air cavities; the cross section of the air passage is generally circular to reduce the gas flow resistance, and the air passage is in communication with the air cavities through radial or axial through holes to ensure that the gas uniformly enters each air cavity. The connection part of the air passage and the air nozzle is sealed to prevent gas leakage; the inner diameter of the air passage is determined according to the gas flow rate and pressure requirement of the inflation and deflation device; the inner wall of the air passage is treated to ensure smooth gas flow; and the number and distribution of the communication holes of the air passage and the air cavities are designed according to the air cavity layout and the requirement of uniform gas distribution.

[0009] In a further embodiment, a contact block is slidingly arranged in the forming cavity of the core, the contact block is connected to one end of the ejector rod close to the core, and the contact block is used for pushing out the ceramic part in the core, wherein the contact block can be made of a material with a certain elasticity and wear resistance, and is embedded or screw-connected with the ejector rod to ensure firm connection; the surface hardness of the contact block is moderate, which can ensure the friction force for pushing the ceramic part and will not damage the surface of the ceramic part; and the connection strength of the contact block and the ejector rod needs to meet the requirement that the contact block will not fall off under the maximum demolding force.

[0010] In a further embodiment, a piston rod is slidingly arranged in the driving block, one end of the piston rod is connected with the piston block, and the other end penetrates through the driving block; a top plate is installed at the other end of the piston rod, and the top plate is used for pushing the ejector rod to move, wherein the piston rod connects the piston block and the top plate, and transmits the linear motion of the piston block to the top plate, and then pushes the ejector rod to demold; the piston rod is made of high-strength alloy steel material to ensure that it will not deform or break when bearing a large pressure and tension; the piston rod is welded or connected with the piston block and the top plate by high-strength bolts to ensure reliable connection; the diameter of the piston rod is determined according to the required transmitted force and the movement speed of the piston block; the straightness of the piston rod is good to ensure smooth movement. The connection part of the piston rod, the piston block and the top plate needs to be detected.

[0011] In a further embodiment, a fixing plate is installed on the top plate, and the fixing plate is used for fixing the ejector rod on the top plate, wherein the fixing plate is used for firmly fixing the ejector rod on the top plate to ensure that the ejector rod moves synchronously during demolding without displacement or shaking; the fixing plate is made of the same material as the top plate, is made of a metal plate, and is connected with the top plate by bolts or welding, and the distribution of the connection points ensures that the fixing plate can uniformly fix the ejector rod; the thickness of the fixing plate is determined according to the number of the ejector rods and the stress condition; and the position precision of the ejector rod mounting holes on the fixing plate is high to ensure that the ejector rod is perpendicular to the top plate after installation and accurately acts on the ceramic part.

[0012] In a further embodiment, the contact block is adapted to the shape of the ceramic piece and the forming cavity in the core, wherein the contact block is adapted to the shape of the ceramic piece and closely fits the surface of the ceramic piece to provide uniform pushing force during ejection; the contact block is adapted to the forming cavity in the core to ensure that the ceramic piece is not damaged when being ejected and moves smoothly in the forming cavity; the adaptability of the contact block is ensured by accurate mold design and manufacturing process, and the contact block is profiled according to the three-dimensional model of the ceramic piece during manufacturing; the contact block has good adhesion to the ceramic piece and appropriate clearance with the forming cavity. The surface of the contact block is smoothed to reduce friction between the ceramic piece and the forming cavity.

[0013] Beneficial effects: 1. Through the cooperation of the ejector rod, the fixed plate, the top plate, the piston rod, the piston block, the driving block and the air nozzle, the purpose of avoiding direct contact between the surface of the ceramic piece and the rigid part during demolding is achieved; the ejector rod is connected with the top plate through the fixed plate, the piston rod connects the piston block and the top plate, the piston block in the driving block is driven by the air pressure provided by the air charging and exhausting device through the air nozzle, which drives a series of components to push the contact block to stably eject the ceramic piece, and because the pneumatic ejection has the characteristics of soft and uniform force, the impact force on the surface of the ceramic piece during the entire demolding process is extremely small; finally, the effect of effectively protecting the appearance of the ceramic piece is achieved when the ceramic piece is demolded.

[0014] 2. The cooperative action of the contact block and the ejector rod realizes the purpose of dispersing the ejection force and avoiding excessive local stress on the ceramic piece; a plurality of ejector rods are evenly distributed on the contact block and firmly connected with the contact block. When the demolding action starts, the external power acts on the ejector rod through a series of transmission structures, and the ejector rod transmits the force to the contact block. Because the contact block is in large-area contact with the ceramic piece, the ejection force originally concentrated on a small area is evenly dispersed to each part of the ceramic piece; thereby the demolding success rate of the ceramic piece is improved and the product quality is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, a brief introduction will be given below to the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any inventive labor.

[0016] Figure 1 It is a structural schematic diagram of the present application.

[0017] Figure 2 It is Figure 1 a main sectional structural schematic diagram.

[0018] Figure 3 It is Figure 1A schematic diagram of the side section structure.

[0019] Figure 4 for Figure 2 A schematic diagram of the structure at point A.

[0020] Figure 5 for Figure 3 A schematic diagram of the structure at point B.

[0021] The reference numerals in the figure are as follows: 1. Core; 2. Fixing plate; 3. Top plate; 4. Drive block; 401. Air passage; 402. Air chamber; 5. Air nozzle; 6. Contact block; 7. Push rod; 8. Piston rod; 801. Piston block. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in this utility model are described clearly and completely. Obviously, the described embodiments are only some, not all, of the embodiments in this utility model. All other embodiments obtained by those skilled in the art based on the embodiments in this utility model without creative effort are within the scope of protection of this utility model.

[0023] This application provides a precision ceramic injection molding apparatus, which solves the technical problems of traditional precision ceramic injection molding apparatuses, such as easy scratching of the ceramic part surface during demolding, leading to damage to its appearance, and the tendency for localized stress concentration in the ceramic part due to its brittleness and small stress point when using ejector pins for demolding, resulting in cracks and breakage. In practical use, it achieves the goal of preventing surface scratches during demolding of ceramic parts, effectively protecting their appearance; at the same time, it avoids localized stress concentration caused by small stress points, thereby reducing the probability of cracks and breakage in ceramic parts.

[0024] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0025] Reference Figures 1-5 A precision ceramic injection molding device includes: a drive block 4, installed inside the molding device; multiple piston blocks 801, which are slidably installed inside the drive block 4; an air nozzle 5, installed on the drive block 4, which is used to connect an external inflation / extraction device; multiple ejector rods 7, which are detachably installed on the drive block 4, and which are used for demolding ceramic parts; the piston blocks 801 are used to push the ejector rods 7 to demold ceramic parts; and the inflation / extraction device is used to control the piston blocks 801 to move upward or downward.

[0026] The driving block 4 as a core component carries the piston block 801 and the air nozzle 5 and other structures, and the external charging and pumping device controls the up and down movement of the piston block 801 in the driving block 4 through the air nozzle 5. The piston block 801 further pushes the detachable top rod 7, and then transmits the demolding force to the ceramic part, accurately and effectively providing power for the demolding action.

[0027] The core 1 is stably installed in the core 1 fixing plate 2 in the molding device, and the core 1 is used for molding of a ceramic part.

[0028] The core 1 is stably installed in the core 1 fixing plate 2, and the molding cavity inside provides a molding space for ceramic material in the injection molding process, ensuring that the ceramic part can be molded according to the preset shape and size.

[0029] The air cavity 402 is provided with a plurality of air cavities, and the air cavity 402 is provided with a plurality of air cavities. The position of the air cavity 402 corresponds to the position of the piston block 801, and the piston block 801 is matched with the air cavity 402.

[0030] A plurality of air cavities 402 correspond to and match the piston block 801, and the air cavity 402 can provide a stable motion track for the piston block 801. During the charging and pumping process, the air cavity 402 cooperates with the piston block 801 to convert the gas pressure into the linear motion of the piston block 801, and provides stable power for the subsequent demolding action.

[0031] The air passage 401 is provided in the driving block 4, and the air passage 401 communicates with a plurality of air cavities 402. The air passage 401 communicates with the air nozzle 5, and the air passage 401 is used for the charging and pumping device to charge or pump air into the air cavity 402.

[0032] The air passage 401 connects the air nozzle 5 and the plurality of air cavities 402 in the driving block 4, so that the gas output or sucked by the charging and pumping device can quickly and uniformly reach each air cavity 402, accurately control the movement of the piston block 801, and then effectively control the demolding process.

[0033] The contact block 6 is slidably arranged in the molding cavity of the core 1, and the contact block 6 is connected to one end of the top rod 7 close to the core 1. The contact block 6 is used for pushing out the ceramic part in the core 1.

[0034] The contact block 6 is connected with the top rod 7 and located in the molding cavity of the core 1. During demolding, the contact block 6 uniformly disperses the force transmitted by the top rod 7 to the ceramic part by virtue of the large-area contact with the ceramic part, avoiding cracks or breakage of the ceramic part due to excessive local stress.

[0035] The piston rod 8 is slidably arranged in the driving block 4, one end of the piston rod 8 is connected with the piston block 801, and the other end penetrates the driving block 4; the top plate 3 is installed at the other end of the piston rod 8, and the top plate 3 is used to push the top rod 7 to move.

[0036] The piston rod 8 slides in the driving block 4, one end of which is connected to the piston block 801, and the other end is connected to the top plate 3. When the piston block 801 moves under the driving of the air cavity 402, the piston rod 8 can accurately and accurately transmit the linear motion of the piston block 801 to the top plate 3, so that the top plate 3 can push the ejector rod 7 to perform the demolding operation.

[0037] The fixed plate 2 is installed on the top plate 3, and the fixed plate 2 is used to fix the ejector rod 7 on the top plate 3.

[0038] The fixed plate 2 is installed on the top plate 3, and the fixed plate 2 is used to fix the ejector rod 7 on the top plate 3.

[0039] The contact block 6 is matched with the peripheral shape of the ceramic part, and the contact block 6 is matched with the forming cavity in the core 1.

[0040] The contact block 6 is matched with the peripheral shape of the ceramic part, and the contact block 6 is matched with the forming cavity in the core 1.

[0041] In use, when precise ceramic injection molding is performed, first, the ceramic raw material is injected into the forming cavity of the core 1 in the fixed plate 2 of the core 1 installed in the forming device, and the injection molding is completed; after the mold is opened, the external air charging device charges air into the air passage 401 in the driving block 4 through the air nozzle 5, the air passage 401 uniformly delivers the gas to the plurality of air cavities 402, and drives the piston block 801 matched with the air cavity 402 to move upward; the piston block 801 drives the piston rod 8 connected thereto to move upward, the piston rod 8 penetrates the driving block 4 and drives the top plate 3, the fixed plate 2 installed on the top plate 3 firmly fixes the plurality of ejector rods 7, so that the movement of the top plate 3 can drive the ejector rod 7 to move synchronously; the ejector rod 7 is connected to the contact block 6 matched with the peripheral shape of the ceramic part and matched with the forming cavity in the core 1 at one end close to the core 1, the ejector rod 7 drives the contact block 6 to move upward, the contact block 6 uniformly applies force, and the ceramic part is smoothly pushed out of the core 1, and the demolding process is completed; if reset is required, the air charging device draws air through the air nozzle 5, the piston block 801 drives each component to move downward, and waits for the next injection molding operation.

[0042] The figures in the drawings are example figures, and the purpose is only to more intuitively show the key structure and connection relationship of the precise ceramic injection molding device of the utility model; in actual application, the appearance and size of the device can be adjusted and optimized according to specific needs.

[0043] The utility model covers any alternative, modification, equivalent method and scheme which are made on the essence and range of the utility model. In order to make the public have the thorough understanding of the utility model, the specific details are explained in the above preferred embodiment of the utility model, and the utility model can also be completely understood without the description of these details for the person skilled in the art. In addition, in order to avoid unnecessary confusion to the essence of the utility model, the well-known method, process, flow, element and circuit etc. are not explained in detail.

[0044] The above is only the preferred embodiment of the utility model, and it should be pointed out that, for ordinary skilled person in the art, under the premise of not departing from the principle of the utility model, a plurality of improvements and refinements can also be made, and these improvements and refinements should also be regarded as the protection range of the utility model.

Claims

1. A precision ceramic injection molding apparatus, characterized by, The utility model relates to a ceramic forming device, including: Driving block (4) is installed in the forming device, Piston block (801) is equipped with a plurality of, and a plurality of piston block (801) slidingly installed in the driving block (4), Air nozzle (5) is installed on the driving block (4), and the air nozzle (5) is used for external connection of the air charging and pumping device, The ejector rod (7) is provided with a plurality of, and a plurality of ejector rod (7) is detachably installed on the driving block (4), and the ejector rod (7) is used for ceramic piece demolding, The piston block (801) is used to push the ejector rod (7) and demolds the ceramic piece, and the air charging and pumping device is used to control the piston block (801) to go up or go down.

2. The precision ceramic injection molding apparatus of claim 1, wherein, Further including: Core (1) is stably installed in the core (1) fixed plate (2) in the forming device, and the core (1) is used for ceramic piece forming.

3. The precision ceramic injection molding apparatus of claim 1, wherein, Further including: Air cavity (402) is opened with a plurality of, and the air cavity (402) opening position corresponds to the position of piston block (801), and the piston block (801) is adapted to the air cavity (402).

4. The precision ceramic injection molding apparatus of claim 3, wherein, Further including: Air passage (401) is arranged in the driving block (4), the air passage (401) is communicated with a plurality of air cavities (402), the air passage (401) is communicated with the air nozzle (5), and the air passage (401) is used for the air charging and pumping device to charge or pump air in the air cavity (402).

5. The precision ceramic injection molding apparatus of claim 1, wherein, Further including: Contact block (6) is slidably arranged in the forming cavity of core (1), the contact block (6) is connected to the one end of ejector rod (7) close to core (1), and the contact block (6) is used to push out the ceramic piece in core (1).

6. The precision ceramic injection molding apparatus of claim 1, wherein, Further including: Piston rod (8) is slidably arranged in the driving block (4), one end of the piston rod (8) is connected with piston block (801), and the other end penetrates the driving block (4), Top plate (3) is installed on the other end of piston rod (8), and the top plate (3) is used to push the ejector rod (7) to move.

7. The precision ceramic injection molding apparatus of claim 6, wherein: Further including: Fixed plate (2) is installed on the top plate (3), and the fixed plate (2) is used to fix the ejector rod (7) on the top plate (3).

8. The precision ceramic injection molding apparatus of claim 5, wherein: The contact block (6) is adapted to the peripheral shape of the ceramic piece, and the contact block (6) is adapted to the forming cavity in the core (1).

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