Cleaning type demolding device of injection mold

Abstract

The cleaning type demolding device comprises a lifting plate installed on one side of a lower mold, a plurality of hollow ejector rods are arranged on the lifting plate, ejector heads are arranged at the ends, away from the lifting plate, of the hollow ejector rods, and the ejector heads and the ends, away from the lifting plate, of the hollow ejector rods penetrate through the lower mold; a plurality of inclined openings are formed in the ejector head, a cavity is formed in the lifting plate and communicates with the hollow ejector rod, the lifting plate is connected with a conveying piece, the conveying piece is used for conveying compressed air into the cavity, and the compressed air is sprayed out from the inclined openings after passing through the cavity, the hollow ejector rod and the ejector head so as to clean the lower die. After the product is ejected out of the lower mold, the inclined opening is exposed along with the ejection head and air is sprayed, the lower mold can be directly cleaned in a targeted mode, residual plastic chippings can be blown away in time, the influence of the chippings on subsequent injection molding products is reduced, the cleaning function is integrated in the demolding process, extra shutdown for manual cleaning is not needed, and the production period is shortened.

Description

Technical Field

[0001] This invention relates to the field of demolding technology, and more specifically, to a clean demolding device for injection molds. Background Technology

[0002] In the injection molding process, demolding is a crucial step. Traditional injection mold demolding devices usually use a simple ejector pin structure, which uses the linear movement of the ejector pin to push the molded product out of the mold to achieve the demolding operation. However, traditional demolding devices have shortcomings in actual production: during injection molding, some plastic debris inevitably remains inside the mold. If not cleaned in time, it will adhere to the surface of new products during subsequent injection molding processes. Traditional cleaning methods often require manual cleaning after machine shutdown, reducing production efficiency. Therefore, we have made improvements and proposed a cleaning-type demolding device for injection molds. Summary of the Invention

[0003] This invention provides a cleaning demolding device for injection molds, including a lifting plate installed on one side of the lower mold. The lifting plate is provided with a plurality of hollow ejector rods, and the end of each hollow ejector rod away from the lifting plate is provided with a top. The top and the end of the hollow ejector rod away from the lifting plate pass through the lower mold. The top is provided with a plurality of oblique openings. A cavity is provided inside the lifting plate, and the cavity is connected to the hollow ejector rods. The lifting plate is connected to a conveying component for conveying compressed air into the cavity. The compressed air passes through the cavity, the hollow ejector rods, and the top and is ejected from the oblique openings to clean the lower mold.

[0004] As a preferred technical solution of this application, the end of the top head near the hollow top rod is fixedly connected to an external threaded pipe, and the end of the hollow top rod near the top head is provided with a threaded opening for threaded connection with the external threaded pipe.

[0005] As a preferred technical solution of this application, the conveying component includes a first connecting pipe fixedly installed on one side of the lifting plate and communicating with the chamber, and the first connecting pipe is connected to a solenoid valve, the solenoid valve is connected to a second connecting pipe, the second connecting pipe being used to connect to a compressed air source.

[0006] As a preferred technical solution of this application, the lifting plate is connected to a driving unit, which is used to drive the hollow top rod and the top head to move through the lifting plate.

[0007] As a preferred technical solution of this application, the top head and the hollow ejector rod push the product in the lower mold when the lifting plate approaches the lower mold, so as to achieve demolding.

[0008] As a preferred technical solution of this application, the driving unit includes a support member located on the side of the lifting plate away from the lower mold. A cylinder is provided on the support member, and the piston rod of the cylinder is provided with a connecting sleeve, which is fixedly connected to the side of the lifting plate away from the lower mold.

[0009] As a preferred technical solution of this application, the piston rod of the cylinder is inserted into the inner wall of the connecting sleeve, and a bolt is provided between the piston rod of the cylinder and the connecting sleeve.

[0010] As a preferred technical solution of this application, the support includes a fixed plate, the fixed plate has an opening in the middle, the connecting sleeve passes through the opening, a limit rod is installed on the fixed plate, and the outer surface of the limit rod passes through the lifting plate.

[0011] As a preferred technical solution of this application, a plurality of connecting rods are fixedly connected to the side of the fixed plate away from the lifting plate, and an mounting plate is fixedly connected between the ends of the plurality of connecting rods away from the fixed plate, and the cylinder is mounted on the mounting plate.

[0012] As a preferred technical solution of this application, the fixing plate is fixedly connected to a support frame, and the top of the support frame is connected to the lower mold.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: In the scheme of this application: This application utilizes a slanted nozzle and a conveyor to deliver compressed air into the cavity. The compressed air passes through the cavity, the hollow ejector rod, and the ejector head before being ejected from the slanted nozzle to clean the lower mold. Specifically, after the product is ejected from the lower mold, the slanted nozzle protrudes along with the ejector head and sprays air, enabling targeted cleaning of the lower mold and timely removal of residual plastic debris. This reduces the impact of debris on subsequent injection molded products. This application integrates the cleaning function into the demolding process, eliminating the need for additional machine shutdowns for manual cleaning, reducing the production cycle, and enabling continuous production. Attached Figure Description

[0014] Figure 1 A schematic diagram of the cleaning demolding device for the injection mold provided in this application; Figure 2 A bottom view of the cleaning demolding device for the injection mold provided in this application; Figure 3 This is a schematic diagram of the structure of the solenoid valve provided in this application; Figure 4 A schematic diagram of the structure when the top end is extended, as provided in this application; Figure 5 A side view of the fixing plate provided in this application; Figure 6 A schematic diagram of the limiting rod provided in this application; Figure 7 A schematic diagram of the cavity structure provided in this application; Figure 8 A structural schematic diagram of the hollow push rod and push head provided in this application; Figure 9 A schematic diagram of the threaded port and externally threaded pipe provided in this application; Figure 10 This is a cross-sectional structural diagram of the top head provided in this application.

[0015] The image shows: 1. Lifting plate; 101. Hollow top rod; 102. Top head; 103. Angled opening; 104. Chamber; 105. Solenoid valve; 106. Threaded port; 107. External threaded pipe; 2. Fixing plate; 201. Connecting rod; 202. Mounting plate; 203. Cylinder; 204. Connecting sleeve; 205. Through port; 206. Limiting rod; 3. Support frame. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0017] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0018] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0019] For an example, please refer to... Figures 1-10A cleaning demolding device for injection molds includes a lifting plate 1 installed on one side of the lower mold. The lifting plate 1 has several hollow ejector pins 101. Each hollow ejector pin 101 has a top 102 at its end away from the lifting plate 1. The top 102 and the end of the hollow ejector pins 101 away from the lifting plate 1 pass through the lower mold. The top 102 has several oblique openings 103. A cavity 104 is provided inside the lifting plate 1, communicating with the hollow ejector pins 101. A conveying component is connected to the lifting plate 1 for conveying material to the cavity 104. Compressed air is supplied in chamber 104, and after passing through chamber 104, hollow ejector rod 101 and ejector head 102, the compressed air is ejected from the inclined nozzle 103 to clean the lower mold. That is, after the product is ejected from the lower mold, the inclined nozzle 103 is exposed along with the ejector head 102 and sprays air, which can directly and specifically clean the lower mold, promptly blow away residual plastic debris, and reduce the impact of debris on subsequent injection molded products. This application integrates the cleaning function into the demolding process, eliminating the need for additional machine stoppage for manual cleaning, reducing the production cycle, and realizing continuous production.

[0020] Furthermore, an externally threaded tube 107 is fixedly connected to one end of the top head 102 near the hollow top rod 101, and a threaded opening 106 is provided at one end of the hollow top rod 101 near the top head 102, which is threaded to the externally threaded tube 107. The threaded opening 106 and the externally threaded tube 107 enable a detachable connection between the top head 102 and the hollow top rod 101, so that the top head 102 can be replaced after damage.

[0021] Furthermore, the conveying component includes a first connecting pipe fixedly installed on one side of the lifting plate 1 and communicating with the chamber 104, and the first connecting pipe is connected to a solenoid valve 105. The solenoid valve 105 is connected to a second connecting pipe, which is used to connect to a compressed air source, which is provided by an air compressor.

[0022] Furthermore, the lifting plate 1 is connected to a drive unit, which is used to drive the hollow ejector rod 101 and the ejector head 102 to move through the lifting plate 1; the ejector head 102 and the hollow ejector rod 101 push the product in the lower mold when the lifting plate 1 approaches the lower mold, so as to achieve demolding.

[0023] Furthermore, the drive unit includes a support member located on the side of the lifting plate 1 away from the lower mold. A cylinder 203 is provided on the support member. The piston rod of the cylinder 203 is provided with a connecting sleeve 204, and the connecting sleeve 204 is fixedly connected to the side of the lifting plate 1 away from the lower mold. The piston rod of the cylinder 203 is inserted into the inner wall of the connecting sleeve 204, and a bolt is provided between the piston rod of the cylinder 203 and the connecting sleeve 204. The piston rod of the cylinder 203 and the connecting sleeve 204 are connected together by the bolt, so that the piston rod of the cylinder 203 and the connecting sleeve 204 can be disassembled.

[0024] Furthermore, the support includes a fixed plate 2, with a through-hole 205 in the middle of the fixed plate 2. The connecting sleeve 204 passes through the through-hole 205. A limit rod 206 is installed on the fixed plate 2, and the outer surface of the limit rod 206 passes through the lifting plate 1. The limit rod 206 can limit the lifting plate 1 to improve the stability of the lifting plate 1 when it moves. The position of the limit rod 206 does not coincide with the position of the chamber 104.

[0025] Furthermore, a number of connecting rods 201 are fixedly connected to the side of the fixed plate 2 away from the lifting plate 1, and an mounting plate 202 is fixedly connected between the ends of the connecting rods 201 away from the fixed plate 2. The cylinder 203 is mounted on the mounting plate 202, and the cylinder 203 is connected to the mounting plate 202 by bolts.

[0026] Furthermore, the fixed plate 2 is fixedly connected to the support frame 3, the top of the support frame 3 is connected to the lower mold, and the support frame 3 can support the fixed plate 2 and the lower mold. For ease of understanding, this application uses A to represent the lower mold and marks it in the figure. The side of the lower mold away from the support frame 3 is provided with the upper mold.

[0027] After injection molding is completed, the upper mold and lower mold separate. The cylinder 203 pushes the lifting plate 1 to move towards the lower mold through the connecting sleeve 204. The lifting plate 1 drives the hollow ejector rod 101 and the ejector head 102 to move, so that the ejector head 102 passes through the lower mold and is exposed. During this process, the product in the lower mold is ejected and demolded through the ejector head 102. The inclined opening 103 is exposed from the lower mold, and the solenoid valve 105 is turned on, and compressed air enters the chamber 104. After passing through the hollow ejector rod 101 and the ejector head 102, it is sprayed out from the inclined opening 103 to clean the lower mold. After cleaning is completed, the solenoid valve 105 is closed, and the cylinder 203 drives the lifting plate 1 away from the lower mold through the connecting sleeve 204, so that the ejector head 102 and the hollow ejector rod 101 are reset and retracted into the lower mold.

[0028] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. A clean-type demolding device for injection molds, characterized in that, The system includes a lifting plate (1) installed on one side of the lower mold. The lifting plate (1) is provided with several hollow push rods (101). The end of the hollow push rod (101) away from the lifting plate (1) is provided with a top head (102). The top head (102) and the end of the hollow push rod (101) away from the lifting plate (1) pass through the lower mold. The top head (102) is provided with several oblique openings (103). The lifting plate (1) is provided with a cavity (104). The cavity (104) is connected to the hollow push rod (101). The lifting plate (1) is connected to a conveying component. The conveying component is used to deliver compressed air into the cavity (104). After passing through the cavity (104), the hollow push rod (101) and the top head (102), the compressed air is ejected from the oblique openings (103) to clean the lower mold.

2. The clean-type demolding device for injection molds according to claim 1, characterized in that, The top head (102) is fixedly connected to an external threaded tube (107) at one end near the hollow top rod (101), and the hollow top rod (101) is provided with a threaded opening (106) for threaded connection with the external threaded tube (107) at one end near the top head (102).

3. The cleanable demolding device for injection molds according to claim 1, characterized in that, The conveying component includes a first connecting pipe fixedly installed on one side of the lifting plate (1) and communicating with the chamber (104), and the first connecting pipe is connected to a solenoid valve (105). The solenoid valve (105) is connected to a second connecting pipe, which is used to connect to a compressed air source.

4. The cleanable demolding device for injection molds according to claim 1, characterized in that, The lifting plate (1) is connected to a drive unit, which is used to drive the hollow top rod (101) and the top head (102) to move through the lifting plate (1).

5. The cleanable demolding device for injection molds according to claim 4, characterized in that, The top head (102) and the hollow push rod (101) push the product in the lower mold when the lifting plate (1) approaches the lower mold, so as to achieve demolding.

6. The cleanable demolding device for injection molds according to claim 5, characterized in that, The drive unit includes a support member located on the side of the lifting plate (1) away from the lower mold. A cylinder (203) is provided on the support member. The piston rod of the cylinder (203) is provided with a connecting sleeve (204), and the connecting sleeve (204) is fixedly connected to the side of the lifting plate (1) away from the lower mold.

7. The cleanable demolding device for injection molds according to claim 6, characterized in that, The piston rod of the cylinder (203) is inserted into the inner wall of the connecting sleeve (204), and a bolt is provided between the piston rod of the cylinder (203) and the connecting sleeve (204).

8. The cleanable demolding device for injection molds according to claim 7, characterized in that, The support includes a fixed plate (2), with a through-hole (205) in the middle of the fixed plate (2), through which the connecting sleeve (204) passes. A limit rod (206) is installed on the fixed plate (2), and the outer surface of the limit rod (206) passes through the lifting plate (1).

9. The cleaning demolding device for injection molds according to claim 8, characterized in that, The fixed plate (2) is fixedly connected to a number of connecting rods (201) on the side away from the lifting plate (1), and an mounting plate (202) is fixedly connected between the ends of the connecting rods (201) away from the fixed plate (2), and the cylinder (203) is mounted on the mounting plate (202).

10. The cleaning demolding device for injection molds according to claim 8, characterized in that, The fixed plate (2) is fixedly connected to the support frame (3), and the top of the support frame (3) is connected to the lower mold.

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