Injection molding device with automatic demolding function

Abstract

The utility model discloses an automatic demolding injection molding device, which belongs to the field of automatic demolding injection molds and is characterized in that protective strips are placed in two opposite embedding grooves, mounting holes are formed in two ends of each protective strip, bolts are inserted into the mounting holes to fix the protective strips on an inner core footstock, and a pinch bar extends into an insertion opening to facilitate demolding of the inner core footstock and the injection mold. Or the protection strip is pulled to separate the inner core top seat from the injection mold and prevent hands from being pinched. Due to the arc-shaped and anti-skid texture design of the protective strip and the embedded groove in the inner wall of the inserting opening, the operation safety and comfort are improved, and the inner core top base can be pried more accurately in a more labor-saving mode. By means of the design, mold operation efficiency is improved, errors are reduced, and performance is enhanced. The protection strips are fixed through hole sites, stability is enhanced, damage caused by vibration or impact is reduced, and abrasion is reduced. The design also prevents fingers from accidentally stretching into the die, and reduces the risk of hand clamping. And the mold maintenance work is simplified through regular maintenance, long-term stable operation is ensured, and the downtime is shortened.

Description

Technical Field

[0001] The utility model relates to the field of automatic demoulding injection molds, in particular to an automatic demoulding injection molding device. Background Art

[0002] Automatic ejection injection molds are an advanced manufacturing technology that enables automatic demolding of products during the injection molding process, significantly improving production efficiency and product quality while reducing reliance on manual operation. During the injection molding process, molten plastic is injected into the mold cavity and solidifies into the product after cooling. Automatic ejection injection molds utilize a specific mechanical or hydraulic system to automatically eject the product from the mold at the end of the injection cycle. These molds typically consist of a fixed mold, a movable mold, and auxiliary devices (such as core pullers, tilting mechanisms, and automatic ejection mechanisms) to ensure smooth product ejection.

[0003] While automatic demolding injection molds play an important role in modern manufacturing, the large number of bolts during maintenance makes disassembly and installation complex and time-consuming. Maintenance personnel spend a significant amount of time tightening and loosening bolts, which not only prolongs maintenance cycles but also reduces production efficiency. The excessive number of bolts complicates the operation, forcing maintenance personnel to inspect and operate each bolt individually, increasing the difficulty and potentially leading to omissions or errors. During disassembly, due to the high tightening force of the bolts, specialized equipment such as pry bars is sometimes required. This not only increases the difficulty of maintenance but can also damage the mold, shortening its service life.

[0004] When using tools such as pry bars for demoulding, improper operation may lead to safety accidents such as tool slipping or mold damage. Frequent use of these specialized equipment for demoulding not only increases maintenance costs, but may also further extend downtime due to equipment wear and repair. Utility Model Content

[0005] The main purpose of the utility model is to provide an automatic demoulding injection molding device, which can effectively solve the problems raised in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] An automatic demoulding injection molding device comprises a mounting frame, an injection nozzle, and an injection mold. Two sets of mounting frames are respectively located at both ends of the injection mold and connected to the automatic demoulding device of the injection molding machine through the mounting frames. The injection nozzle is located at an opening at one end of the injection mold, and material is injected into the injection mold through the injection nozzle.

[0008] The inner cavity of the injection mold is equipped with an inner core base and an inner core top seat. Tightening blocks are provided at both ends of the inner core base and the inner core top seat. The inner core base is fixed to the injection mold through the tightening blocks. An insertion hole is opened at the upper end of the inner core top seat, and the injection nozzle passes through the insertion hole and extends to the injection molding chamber between the inner core top seat and the inner core base. Materials are injected into the injection molding chamber to achieve the injection molding of the terminal;

[0009] Sockets are opened at the edge of the inner core top seat, and an embedding groove is formed on the inner wall of the socket. Protective strips are placed in two opposite embedding grooves, and mounting holes are opened at both ends of the protective strips. Bolts are inserted into the mounting holes to fix the protective strips on the inner core top seat. A pry bar is inserted into the socket to facilitate the demolding of the inner core top seat from the injection mold, or the protective strip is toggled to separate the inner core top seat from the injection mold and prevent pinching of the hand.

[0010] In a further preferred embodiment of the present utility model, the mounting frame and the injection mold are fixed through bolts and anti-slip gaskets, and the mounting frame and the automatic demolding device of the injection molding machine are connected through bolts, nuts and anti-slip gaskets. The injection mold is divided into a fixed mold and a movable mold, and the fixed mold and the movable mold are respectively connected to the inner core base and the inner core top seat, and the terminals formed in the injection molding chamber are separated;

[0011] In a further preferred embodiment of the present utility model, the inner cavity of the injection mold is designed in a "middle" shape, and the "middle" shaped cavity is adapted to the inner core base, the inner core top seat and the tightening blocks. The tightening blocks are located at both ports of the "middle" shaped cavity, and the tightening blocks are fixed to the injection mold through bolts;

[0012] In a further preferred embodiment of the present utility model, a partial block of the tightening block is inserted into the slots opened on the side walls of the inner core base and the inner core top seat, and an anti-slip strip is provided between the tightening block and the inner core base;

[0013] In a further preferred embodiment of the present utility model, the edge of the protective strip is designed in an arc shape, and anti-slip textures are provided on the surfaces of the protective strip and the socket;

[0014] In a further preferred embodiment of the present utility model, the mounting hole is a screw hole, and the mounting hole is aligned with the threaded hole at the bottom of the embedding groove.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] In this utility model, the curved design and anti-slip texture of the protective strip, as well as the embedded groove on the inner wall of the socket, can effectively improve the safety and comfort of the operator, making the prying of the inner core top seat more accurate and labor-saving. This design helps to improve the efficiency of mold operation, reduce operating errors, and thus enhance the overall performance of the mold. The protective strip is fixed to the inner core top seat through the mounting holes. This structural design enhances the stability of the inner core top seat and reduces damage to the mold caused by vibration or impact. At the same time, the anti-slip strip and bolt fixing also reduce the wear and tear of the mold during daily use.

[0017] The protective strip and socket design prevents operators from accidentally inserting their fingers into the mold, reducing the risk of pinching. This safety feature is crucial for ensuring the safety of production workers. The integrated groove and protective strip between the core top seat and the injection mold facilitate the demolding process. This design reduces damage to plastic parts caused by demolding difficulties and improves product yield. Cleaning and lubricating the contact surfaces of the protective strip and socket, as well as inspecting and tightening the bolts and nuts, simplify mold maintenance. Regular maintenance ensures long-term stable mold operation and reduces downtime. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a diagram showing the inner core and the abutting block of the present invention;

[0020] Figure 3 This is a diagram showing the inner core top seat of the utility model;

[0021] Figure 4 for Figure 3 Enlarged schematic diagram of point A in the middle.

[0022] In the figure: 1. Mounting frame; 2. Injection nozzle; 3. Injection mold; 4. Tightening block; 5. Inner core base; 6. Inner core top seat; 7. Insertion hole; 8. Socket; 9. Protective strip; 10. Embedded groove; 11. Mounting hole. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1 - Figure 4As shown in the figure, an injection molding device with automatic demolding, its main components include a mounting frame 1, an injection nozzle 2 and an injection mold 3. Specifically, two groups of mounting frames 1 are respectively arranged at both ends of the injection mold 3, and are connected to the automatic demolding device of the injection molding machine through these mounting frames 1. The injection nozzle 2 is located at the opening at one end of the injection mold 3, and is used to inject materials into the injection mold 3.

[0025] An inner core base 5 and an inner core top seat 6 are installed in the inner cavity of the injection mold 3. Tightening blocks 4 are provided at both ends of the inner core base 5 and the inner core top seat 6. The inner core base 5 is fixed to the injection mold 3 through the tightening blocks 4, and an insertion hole 7 is opened at the upper end of the inner core top seat 6. The injection nozzle 2 passes through the insertion hole 7 and extends to the injection molding chamber between the inner core top seat 6 and the inner core base 5, so as to realize the injection molding of the terminal block.

[0026] An insertion port 8 is opened at the edge of the inner core top seat 6, and an embedding groove 10 is formed on the inner wall of the insertion port 8. A protective strip 9 is placed in two opposite embedding grooves 10. Mounting hole positions 11 are opened at both ends of the protective strip 9, and the protective strip 9 is fixed to the inner core top seat 6 by inserting bolts. A pry bar is inserted into the insertion port 8, which is convenient for the demolding of the inner core top seat 6 and the injection mold 3. In addition, by pulling the protective strip 9, the separation of the inner core top seat 6 and the injection mold 3 can be realized, and it can prevent pinching hands.

[0027] The mounting frame 1 and the injection mold 3 are fixed by bolts and anti-slip gaskets. The mounting frame 1 and the automatic demolding device of the injection molding machine are connected by bolts, nuts and anti-slip gaskets. The injection mold 3 is divided into a fixed mold and a movable mold, which are respectively connected to the inner core base 5 and the inner core top seat 6, so as to realize the separation of the terminal block formed in the injection molding chamber.

[0028] The inner cavity of the injection mold 3 is designed in a "middle" shape, and this "middle" shaped cavity is adapted to the inner core base 5, the inner core top seat 6 and the tightening blocks 4. The tightening blocks 4 are located at both ports of the "middle" shaped cavity and are fixed to the injection mold 3 by bolts. Part of the block of the tightening block 4 is inserted into the side wall grooves of the inner core base 5 and the inner core top seat 6, and an anti-slip strip is provided between the tightening block 4 and the inner core base 5.

[0029] The edge of the protective strip 9 is designed in an arc shape, and anti-slip textures are provided on the surfaces of the protective strip 9 and the insertion port 8. The mounting hole positions 11 are screw holes, which are opposite to the threaded holes at the bottom of the embedding groove 10.

[0030] Demolding process: Preparations before demolding ensure that the injection molding process has been completed and the plastic part has cooled and solidified within the injection mold 3. The temperature of the injection mold 3 is checked to ensure it has dropped to a suitable level for demolding to avoid component damage or demolding difficulties caused by thermal expansion. The mold is opened, and the injection molding machine's automatic demolding device is activated, first actuating the connection mechanism between the mounting frame 1 and the injection mold 3, causing the molds to begin separating. The fixed and movable molds (the two halves of the injection mold 3) begin to move along the mold's opening and closing direction, gradually separating. To remove the plastic part, when the fixed and movable molds have separated to a certain distance, the inner core support 6, which is fitted into the groove 10 and the protective strip 9 between the inner core support 6 and the injection mold 3, can be pried open. An operator or an automated device inserts a pry bar into the socket 8 to pry the inner core support 6 further away from the injection mold 3. During this process, the plastic part will escape from the molding cavity of the injection mold 3 as the inner core support 6 moves. Cleaning and maintenance of the mold. After removing the plastic parts, check whether there is any residual plastic or dirt in the molding cavity of the injection mold 3. Use appropriate tools to clean the residue in the mold to ensure the cleanliness of the mold and avoid affecting the quality of the next injection molding. Check whether the inner core base 5, inner core top seat 6, tightening block 4 and other components are worn or damaged, and replace or repair them if necessary. Clean and lubricate the contact surface of the protective strip 9 and the socket 8 to ensure that they can operate smoothly during the next demolding process. Check and tighten all bolts and nuts to ensure that the connection between the mounting frame 1, injection mold 3, inner core base 5 and inner core top seat 6 is firm. The injection molding device completes the demolding process of the plastic parts and ensures the cleaning and maintenance of the mold, preparing for the next injection molding.

[0031] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. However, the terms "include", "comprises", or any other variations are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or elements that are inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "includes a..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An automatic demoulding injection molding device, comprising a mounting frame (1), an injection nozzle (2) and an injection mold (3), wherein two sets of the mounting frames (1) are respectively located at both ends of the injection mold (3) and connected to the automatic demoulding device of the injection molding machine through the mounting frames (1), the injection nozzle (2) is located at an opening at one end of the injection mold (3), and the material is injected into the injection mold (3) through the injection nozzle (2), characterized in that: The inner cavity of the injection mold (3) is installed with an inner core base (5) and an inner core top seat (6). Tightening blocks (4) are provided at both ends of the inner core base (5) and the inner core top seat (6). The inner core base (5) is fixed on the injection mold (3) through the tightening blocks (4). An insertion hole (7) is opened at the upper end of the inner core top seat (6). The injection nozzle (2) passes through the insertion hole (7) and extends to the injection molding chamber between the inner core top seat (6) and the inner core base (5). Materials are injected into the injection molding chamber to realize the injection molding of the terminal block. A socket (8) is opened at the edge of the inner core top seat (6), and an embedding groove (10) is formed on the inner wall of the socket (8). A protective strip (9) is placed in two opposite embedding grooves (10). Installation holes (11) are opened at both ends of the protective strip (9). Bolts are inserted into the installation holes (11) to fix the protective strip (9) on the inner core top seat (6). A pry bar is inserted into the socket (8) to facilitate the demolding of the inner core top seat (6) from the injection mold (3), or the protective strip (9) is pulled to separate the inner core top seat (6) from the injection mold (3) and prevent pinching hands.

2. The automatic demoulding injection molding device according to claim 1, characterized in that: The mounting bracket (1) and the injection mold (3) are fixed by bolts and anti-slip gaskets. The mounting bracket (1) and the automatic demolding device of the injection molding machine are connected by bolts, nuts and anti-slip gaskets. The injection mold (3) is divided into a fixed mold and a movable mold. The fixed mold and the movable mold are respectively connected to the inner core base (5) and the inner core top seat (6), and the terminal block formed in the injection molding chamber is separated.

3. The automatic demoulding injection molding device according to claim 2, characterized in that: The inner cavity of the injection mold (3) is designed in a "middle" shape. The "middle" shaped cavity is adapted to the inner core base (5), the inner core top seat (6) and the tightening blocks (4). The tightening blocks (4) are located at both ends of the "middle" shaped cavity, and the tightening blocks (4) are fixed on the injection mold (3) by bolts.

4. The automatic demoulding injection molding device according to claim 3, characterized in that: Part of the block of the tightening block (4) is inserted into the grooves opened on the side walls of the inner core base (5) and the inner core top seat (6). An anti-slip strip is provided between the tightening block (4) and the inner core base (5).

5. The automatic demoulding injection molding device according to claim 4, characterized in that: The edge of the protective strip (9) is designed in an arc shape, and anti-slip textures are provided on the surfaces of the protective strip (9) and the socket (8).

6. The automatic demoulding injection molding device according to claim 5, characterized in that: The installation hole (11) is a screw hole, and the installation hole (11) is aligned with the threaded hole at the bottom of the embedding groove (10).

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