Negative pressure adsorption and detection deep cavity injection mold

Abstract

The utility model discloses a negative pressure adsorption and detection deep cavity injection mold, which comprises a movable mold (1), a fixed mold (2) and a cavity formed between the movable mold (1) and the fixed mold (2), the movable mold (1) is provided with a negative pressure detection device (4), the negative pressure detection device (4) comprises a suction loading assembly (41) and an air exhaust assembly (42), and the suction loading assembly (41) is provided with an air exhaust opening. The end part of the sucking and carrying assembly (41) is used for sucking an insert and enabling the insert (5) to be located in a cavity, and the air exhaust assembly (42) is communicated with the sucking and carrying assembly (41) and controls sucking and releasing of the sucking and carrying assembly (41). By means of the mode, when the mold is closed, the negative pressure system can continuously detect and accurately know that the metal piece falls off and the falling-off position, and the yield of products is improved.

Description

Technical Field

[0001] This utility model relates to the field of injection molds, and in particular to a negative pressure adsorption and detection deep cavity injection mold. Background Technology

[0002] Injection molds are widely used tools for producing plastic products. In plastic injection molding, some plastic products require embedded metal parts inside or outside. These metal parts need to be placed in their corresponding positions within the mold before injection molding. They are usually placed manually by operators or gripped by a robotic arm and embedded into a slider. Because the slider holding the metal part moves when the mold closes, there is a risk of the metal part falling off during this process. If a detached metal part is not detected in time, it will cause serious damage to the mold. Utility Model Content

[0003] The main technical problem solved by this utility model is to provide a negative pressure adsorption and detection deep cavity injection mold, which can continuously detect during mold closing, accurately know the metal parts falling off and the location of the falling off, and improve the product yield.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a negative pressure adsorption and detection deep cavity injection mold, including a fixed mold, a moving mold, and a cavity formed between the fixed mold and the moving mold. A negative pressure detection device is provided on the moving mold. The negative pressure detection device includes a suction component and an air extraction component. The end of the suction component is used to suction the insert and place the insert in the cavity. The air extraction component is connected to the suction component and controls the suction and release of the suction component.

[0005] Slider assemblies are symmetrically installed on both sides of the cavity. Each slider assembly includes a slider insert and a slider seat. The suction assembly includes multiple sets of parallel air passages disposed within the slider insert and pipes for connecting the multiple sets of air passages to the suction assembly.

[0006] The direction of the multiple sets of air passages is set perpendicular to the product.

[0007] The airway includes at least one through hole, in which an air tube is installed, and the end of the air tube extends out of the through hole and is inserted into an insert.

[0008] The air passage also includes at least one air hole, which is used to adsorb the inner end face of the insert.

[0009] The negative pressure detection device also includes a pressure sensor, which is installed on the pipeline.

[0010] The slider seat is movably mounted on the moving mold, and a slider insert is fixedly mounted on the inner side of the slider seat. The slider seat is provided with an inclined hole that slopes from the inside out.

[0011] The mold closing device further includes a guide post fixedly installed on the fixed mold, the guide post being inclined and the inclination angle being the same as that of the inclined hole.

[0012] The <s>Certainly< / s> The moving mold core also includes a cooling device, which includes at least two sets of cooling pipes in different directions, as well as an inlet pipe and an outlet pipe connected to the cooling pipes, and the cooling pipes are located inside the mold cavity.

[0013] The cooling pipe and the inlet and outlet pipes connected thereto are manufactured by 3D printing. The beneficial effect of this utility model is that the negative pressure adsorption and detection deep cavity injection mold of this utility model can continuously detect the metal parts and their locations when the mold is closed, thereby improving the product yield. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a negative pressure adsorption and detection deep cavity injection mold during mold closing according to the present invention;

[0015] Figure 2 This is a schematic diagram of the structure of the moving mold and slider assembly of a negative pressure adsorption and detection deep cavity injection mold according to the present invention;

[0016] Figure 3 This is a schematic diagram of the sliding component assembly structure for negative pressure adsorption and detection of deep cavity injection mold according to this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of a slider assembly for negative pressure adsorption and detection of deep cavity injection molds according to this utility model. Figure 1 ;

[0018] Figure 5 This is a schematic diagram of the structure of a slider assembly for negative pressure adsorption and detection of deep cavity injection molds according to this utility model. Figure 2 ;

[0019] Figure 6 yes Figure 5 Enlarged image;

[0020] Figure 7 This is a schematic diagram of the air passage structure of a negative pressure detection device for negative pressure adsorption and detection of deep cavity injection molds according to the present invention. Figure 8 This is a schematic diagram of the structure of a negative pressure adsorption and detection cooling device for deep cavity injection molds according to this utility model. Detailed Implementation

[0021] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0022] Please see Figures 1-8 The embodiments of this utility model include:

[0023] A negative pressure adsorption and detection deep cavity injection mold includes a moving mold 1, a fixed mold 2, and a cavity formed between the moving mold 1 and the fixed mold 2. A slider assembly 3 and a negative pressure detection device 4 are symmetrically installed on both sides of the cavity. The slider assembly 3 includes a slider insert 31 and a slider seat 32. The negative pressure detection device 4 includes a suction assembly 41 and a vacuum assembly 42. The suction assembly 41 is disposed in the slider insert 31 and is used to adsorb and fix multiple inserts 5. The vacuum assembly 42 is connected to the suction assembly 41 and controls the suction and release of the suction assembly 41. In its specific implementation, the product produced by the injection mold is a deep-cavity box with eight chambers. During injection molding, an insert is embedded in the outer wall of each chamber, with four inserts on each side of the product. The inserts on each side are set on the outer wall of every other chamber. Before injection molding, the eight inserts are pre-embedded in the mold closing device. The negative pressure detection device continuously detects whether the inserts have fallen off. If the insert falls off and causes the negative pressure value to exceed the set range, the system will send a signal to the injection molding machine, which will immediately stop and issue an alarm. When it is ensured that the inserts have not fallen off before mold closing, the fixed mold and the moving mold close, and polycarbonate melt is injected into the cavity and cooled to form the product.

[0024] The suction assembly 41 includes multiple sets of parallel air passages 411 disposed within the slider insert 31 and a conduit 412 for connecting the multiple sets of air passages 411 to the suction assembly.

[0025] The direction of the multiple sets of air passages 411 is set perpendicular to the product.

[0026] The airway 411 includes at least one through hole, in which an air tube 4111 is installed. The end of the air tube 4111 extends out of the through hole and is inserted into the insert 5.

[0027] The air passage 411 also includes at least one air hole 4112, which is used to adsorb the inner end face of the insert. In a specific implementation of this application, the air passage includes two through holes and one air hole. The two through holes are located above the air hole and are arranged in an inverted V shape. Each of the two channels is equipped with an air pipe, and the ends of the two air pipes extend out of the through holes. This ensures that when the adsorption assembly adsorbs the insert, the angle of each insert is the same, that is, the installation angle of the insert on each product is the same, which greatly improves the product yield.

[0028] The negative pressure detection device 4 also includes a pressure sensor, which is installed on the pipeline 412. More preferably, the pipeline includes a main pipeline and multiple branch pipelines connected to the main pipeline. Each branch pipeline is connected to multiple air passages, and each branch pipeline is equipped with a pressure sensor. Each pressure sensor is connected to at least one air vent via a circuit. Before the insert is embedded, the air pipes and air vents in the air passages are in a vented state. After the insert is embedded, the insert blocks the ends of the air pipes and air vents, creating a sealed state between the air passages and the insert. The pressure values ​​of all air passages should be the same. When the insert on the slider insert falls off, the corresponding air vent cannot be sealed, causing a change in pressure value. This allows for precise determination of the specific location of the fallen insert, improving the accuracy of insert embedding and preventing damage to the mold or the production of defective products.

[0029] The slider seat 32 is movably mounted on the moving mold 1. A slider insert 31 is fixedly mounted on the inner side of the slider seat 32. The slider seat 32 is provided with an inclined hole 34 that slopes from the inside out.

[0030] The slider assembly 3 also includes a guide post 33 fixedly installed on the fixed mold 2. The guide post 33 is inclined and the inclination angle is the same as that of the inclined hole 34. In a specific implementation of this application, when the injection mold begins to close, the moving mold core moves towards the fixed mold core, and the guide post passes into the inclined hole, causing the slider to drive the slider insert to slide inward and form a cavity with the moving mold. Polycarbonate melt is injected into the cavity and cooled to form a product. After the mold opens, the mold moving guide post drives the slider seat and slider insert to open outward, and the product is taken out by the part removal robot. At the same time, the insert is embedded in the slider insert, the negative pressure detection device sucks the insert in place, and the pressure sensor monitors the pressure value of the air pipe of each insert in real time to ensure that the insert does not fall off when the mold closes.

[0031] The moving mold 1 also includes a cooling device 6, which includes at least two sets of cooling pipes 61 with different directions, as well as an inlet pipe and an outlet pipe connected to the cooling pipes. The cooling pipes 61 are located inside the cavity.

[0032] The cooling pipe 61 and the inlet and outlet pipes connected thereto are manufactured using 3D printing. The injection mold of this application requires a high mold temperature of over 100°C; therefore, the mold heating rate, temperature stability, and temperature consistency at various locations must be considered. Taking all factors into account, it was decided to use 3D printing to manufacture several key parts related to product molding. Compared with traditional processing methods, 3D-printed parts can have water channels designed according to their shape, and the water channels can change with the part's structure, ensuring uniform heating of all parts; simultaneously, the water channels are longer, have more contact area, and have a better heat conduction rate. The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or process transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A deep cavity injection mold for negative pressure adsorption and detection, characterized in that, It includes a moving mold (1), a fixed mold (2) and a cavity formed between the moving mold (1) and the fixed mold (2). The moving mold (1) is provided with a negative pressure detection device (4). The negative pressure detection device (4) includes a suction component (41) and an air extraction component (42). The end of the suction component (41) is used to suction the insert and place the insert (5) in the cavity. The air extraction component (42) is connected to the suction component (41) and controls the suction and release of the suction component (41).

2. The negative pressure adsorption and detection deep cavity injection mold according to claim 1, characterized in that, The cavity is symmetrically mounted with slider assemblies (3) on both sides. The slider assembly (3) includes a slider insert (31) and a slider seat (32). The suction assembly (41) includes multiple sets of parallel air passages (411) disposed in the slider insert (31) and a pipe (412) for connecting the multiple sets of air passages (411) with the suction assembly (42).

3. The negative pressure adsorption and detection deep cavity injection mold according to claim 2, characterized in that, The direction of the multiple sets of air passages (411) is set perpendicular to the product.

4. The negative pressure adsorption and detection deep cavity injection mold according to claim 3, characterized in that: The airway (411) includes at least one through hole, in which an air tube (4111) is installed. The end of the air tube (4111) extends out of the through hole and is inserted into the insert (5).

5. The negative pressure adsorption and detection deep cavity injection mold according to claim 4, characterized in that: The air passage (411) also includes at least one air hole (4112), which is used to adsorb the inner end face of the insert.

6. The negative pressure adsorption and detection deep cavity injection mold according to claim 2, characterized in that: The negative pressure detection device (4) also includes a pressure sensor, which is installed on the pipeline (412).

7. The negative pressure adsorption and detection deep cavity injection mold according to claim 2, characterized in that: The slider seat (32) is movably mounted on the moving mold (1). A slider insert (31) is fixedly mounted on the inner side of the slider seat (32). An inclined hole (34) is provided on the slider seat (32) from the inside out.

8. The negative pressure adsorption and detection deep cavity injection mold according to claim 7, characterized in that: The slider assembly (3) also includes a guide post (33) fixedly installed on the fixed mold (2), the guide post (33) being inclined and the inclination angle being the same as that of the inclined hole (34).

9. The negative pressure adsorption and detection deep cavity injection mold according to claim 1, characterized in that: The moving mold (1) also includes a cooling device (6), which includes at least two sets of cooling pipes (61) with different directions and an inlet pipe and an outlet pipe connected to the cooling pipes. The cooling pipes (61) are located inside the cavity.

10. A negative pressure adsorption and detection deep cavity injection mold according to claim 9, characterized in that: The cooling pipe (61) and the inlet pipe and outlet pipe connected thereto are made by 3D printing.

Images