Three-plate mold structure with automatic material head falling function and material taking method of three-plate mold structure

Abstract

The invention relates to the technical field of injection molding molds, and particularly discloses a three-plate mold structure with a material head capable of automatically falling and a material taking method of the three-plate mold structure. The structure comprises a fixing plate, a female mold plate and a male mold plate which are sequentially arranged in the working direction, a containing cavity used for containing products is defined by the female mold plate and the male mold plate, a filling nozzle is arranged on the fixing plate, a containing groove is formed in the side, close to the fixing plate, of the female mold plate in a concave mode, a stripper plate is arranged in the containing groove, and a material head is arranged on the side, close to the fixing plate, of the stripper plate. The stripper plate can move in the working direction relative to the fixed plate, the material head comprises a flow dividing part and a plurality of runner pipes connected to the flow dividing part, the runner pipes extend in the working direction, the flow dividing part is detachably connected with the filling nozzle, and the runner pipes can penetrate through the stripper plate and the female mold plate and extend into the containing cavity. According to the structure, the material head does not need to be automatically clamped, so that the length of the runner pipe is reduced, the specific structure is simplified, and the forming period of a product is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding molds, in particular to a three-plate mold structure with automatically falling material heads and a material taking method thereof. Background Art

[0002] As people's pursuit of appearance quality of various daily and industrial products increases, the appearance of plastic products has become a key factor in evaluating the beauty and practicality of products. In product design, details such as gate position, gate traces and weld lines have become important factors affecting user acceptance and product evaluation.

[0003] Molds are indispensable in the injection molding process. Injection molding is a processing method that injects hot molten plastic material into a closed mold cavity with the desired shape at high speed. After the plastic material cools and solidifies, the mold is opened to eject the solidified plastic product to obtain a molded product. This method has been widely used in the field of plastic product manufacturing because of its advantages such as low cost, short cycle, simple process and the ability to easily mold plastic products of complex shapes.

[0004] The mold is mainly composed of a mold frame and the mold core product installed in it. Among them, the mold frame is divided into two-plate molds and three-plate molds. In particular, the three-plate mold, such as Figure 1 As shown, it includes a plurality of parts such as a fixing plate 100', a stripping plate 200', a female mold plate 300', a male mold plate 400', and components such as a sprue 500'. These components work together between the female mold plate 300' and the male mold plate 400' to ensure smooth injection molding.

[0005] However, the existing mold structure is relatively complex, and the workflow is also relatively slow. It is necessary to first separate the stripper plate 200' and the fixed plate 100' from the female mold plate 300', so that the material head 500' is separated from the product 900' under the action of the puller needle; then separate the stripper plate 200' from the fixed plate 100', so that the puller needle is separated from the material head 500'; finally separate the female mold plate 300' from the male mold plate 400', and finally take out the material head 500' through the automatic robot. This results in the mold requiring a longer material head 500' to facilitate the robot to clamp the material head 500'.

[0006] Therefore, there is an urgent need for a three-plate mold structure in which the material head automatically falls off, without the need for automatic clamping of the material head, which helps to reduce the length of the runner tube, simplify the specific structure, and shorten the molding cycle of the product. Summary of the invention

[0007] The purpose of the present invention is to provide a three-plate mold structure with automatic material head dropping and a material taking method thereof, which does not require automatic material head clamping, thereby helping to reduce the length of the runner tube, simplify the specific structure, and shorten the product molding cycle.

[0008] To achieve this object, the present invention adopts the following technical solutions:

[0009] A three-plate mold structure with automatic material head falling includes a fixed plate, a mother mold plate and a male mold plate which are arranged in sequence along a working direction, the mother mold plate and the male mold plate form a receiving cavity for receiving the product, a filling nozzle is provided on the fixed plate, a receiving groove is recessed on the side of the mother mold plate close to the fixed plate, a stripper plate is provided in the receiving groove, a material head is provided on the side of the stripper plate close to the fixed plate, the stripper plate can move relative to the fixed plate along the working direction, the material head includes a diverter and a plurality of flow channel tubes connected to the diverter, the flow channel tubes extend along the working direction, the diverter is detachably connected to the filling nozzle, the flow channel tubes can pass through the stripper plate and the mother mold plate, and extend into the receiving cavity.

[0010] As an optional technical solution for a three-plate mold structure with automatic material head falling, the three-plate mold structure with automatic material head falling also includes a plurality of guide bolts 700, wherein the guide bolts 700 extend along the working direction, and the screw rods of the guide bolts 700 pass through the stripping plate and are screwed to the fixed plate; when the stripping plate is located at an extreme position away from the fixed plate, the stripping plate is pressed against the screw heads of the guide bolts 700.

[0011] As an optional technical solution for the three-plate mold structure with automatic material head falling, the stripping plate is penetrated by a first avoidance hole, the first avoidance hole is the same in number as the guide bolts 700 and corresponds one to one, and the guide bolts 700 are clearance-matched with the first avoidance hole.

[0012] As an optional technical solution for the three-plate mold structure with automatic material head falling, a guide column extending along the working direction is also fixedly connected to the fixed plate, and the guide column passes through the female mold plate and can be detachably plugged into the male mold plate.

[0013] As an optional technical solution for the three-plate mold structure with automatic material head falling, a linear bearing is provided on the mother mold plate, and the linear bearing is slidably matched with the guide column.

[0014] As an optional technical solution for the three-plate mold structure with automatic material head falling, the female mold plate is provided with a plurality of first positioning grooves, and the male mold plate is provided with a plurality of positioning columns, the number of the positioning columns is the same as the first positioning grooves, and each of the positioning columns can be removably inserted into one of the first positioning grooves.

[0015] As an optional technical solution for the three-plate mold structure with automatic material head falling, the positioning column is made of nylon.

[0016] As an optional technical solution for the three-plate mold structure with automatic material head falling, the stripping plate is penetrated by a second avoidance hole, the second avoidance holes are the same in number and correspond one to one with the flow channel tubes, and the flow channel tubes are gap-matched with the second avoidance holes.

[0017] As an optional technical solution for the three-plate mold structure with automatic material head falling, the working direction is parallel to the ground.

[0018] The material taking method of the three-plate mold structure with the material head automatically falling is applied to the above-mentioned three-plate mold structure with the material head automatically falling, and comprises the following steps:

[0019] S1: Control the fixing plate to move away from the mother template along the working direction, so that the diverter is separated from the filling nozzle;

[0020] S2: Continue to control the fixed plate to move away from the mother template, so that the fixed plate drives the stripper plate to move away from the mother template along the working direction until the flow channel tube is separated from the mother template and then falls from the stripper plate;

[0021] S3: Control the female template to move away from the male template, and then take out the product.

[0022] Beneficial effects of the present invention:

[0023] The three-plate mold structure with automatic material head dropping realizes the functions of product accommodating, filling and automatic material head dropping by setting a mother template, a male template and a fixed plate. The mother template is provided with a accommodating groove and a stripping plate, thereby realizing the miniaturized design of the stripping plate, so that the three-plate mold structure with automatic material head dropping does not need to consider the thickness of the stripping plate, thereby reducing the space occupied by the three-plate mold structure with automatic material head dropping as a whole, and at the same time it also helps to shorten the flow channel tube, thereby reducing the length of the material head. Combined with the stripping plate being able to move along the working direction driven by the fixed plate, and the design of the diverter and the flow channel tube, the material head separated from the mother template can automatically detach from the stripping plate and drop due to its own weight, and there is no need to perform the operation of clamping the material head, thereby simplifying the material picking process, improving the efficiency of material picking, and shortening the product molding cycle. The optimization and automatic operation of the three-plate mold structure with automatic material head dropping are realized, with significant technical effects.

[0024] The method completes a series of precise control steps by controlling the movement of the fixed plate, thereby realizing the automatic detachment of the material head and the smooth removal of the product, simplifying the operation process and improving work efficiency. The above method has the advantages of convenient operation, high efficiency and strong stability, and can effectively improve production efficiency and finished product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an exploded view of the existing three-plate mold structure with automatic material head falling;

[0026] Figure 2 It is an exploded view of a three-plate mold structure with automatic falling of the slug provided by an embodiment of the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of the material head provided by an embodiment of the present invention;

[0028] Figure 4 It is a cross-sectional view of a three-plate mold structure in which a sprue automatically falls off in an injection molding state provided by an embodiment of the present invention;

[0029] Figure 5 is a cross-sectional view of a three-plate mold structure in a first state with the sprue automatically falling, provided by an embodiment of the present invention;

[0030] Figure 6 is a cross-sectional view of a three-plate mold structure in a second state with the slug automatically falling, provided by an embodiment of the present invention;

[0031] Figure 7 It is a cross-sectional view of a three-plate mold structure in which a slug automatically falls off in a third state provided by an embodiment of the present invention.

[0032] Figure 1 middle:

[0033] 100', fixed plate; 200', stripping plate; 300', female template; 400', male template; 500', material head; 900', product;

[0034] Figures 2 to 7 middle:

[0035] 100, fixing plate; 110, filling nozzle; 120, guide column; 200, stripping plate; 300, female template; 310, accommodating groove; 320, linear bearing; 400, male template; 410, second positioning groove; 420, positioning column; 500, material head; 510, diverter; 520, flow channel tube; 700, guide bolt; 900, product. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0040] like Figures 2 to 7As shown, the present embodiment provides a three-plate mold structure with automatic material head falling, including a fixed plate 100, a mother mold plate 300 and a male mold plate 400 arranged in sequence along the working direction, the mother mold plate 300 and the male mold plate 400 form a receiving cavity for receiving the product 900, a filling nozzle 110 is provided on the fixed plate 100, a receiving groove 310 is recessed on the side of the mother mold plate 300 close to the fixed plate 100, a stripping plate 200 is arranged in the receiving groove 310, a material head 500 is provided on the side of the stripping plate 200 close to the fixed plate 100, the stripping plate 200 can move relative to the fixed plate 100 along the working direction, the material head 500 includes a diverter 510 and a plurality of flow channel tubes 520 connected to the diverter 510, the flow channel tubes 520 extend along the working direction, the diverter 510 is detachably connected to the filling nozzle 110, the flow channel tubes 520 can pass through the stripping plate 200 and the mother mold plate 300, and extend into the receiving cavity.

[0041] The three-plate mold structure with automatic material head dropping realizes the functions of product 900 accommodating, material filling and automatic material head dropping 500 by setting a female mold plate 300, a male mold plate 400 and a fixed plate 100. The mother template 300 is provided with a receiving groove 310 and a stripper plate 200, thereby realizing a miniaturized design of the stripper plate 200, so that the three-plate mold structure with the material head automatically falling does not need to consider the thickness of the stripper plate 200, thereby reducing the space occupied by the three-plate mold structure with the material head automatically falling, and at the same time, it is also helpful to shorten the flow channel tube 520, thereby reducing the length of the material head 500. Combined with the stripper plate 200 being able to move along the working direction driven by the fixed plate 100, and the design of the diverter 510 and the flow channel tube 520, the material head 500 separated from the mother template 300 can automatically detach from the stripper plate 200 and fall due to its own weight, and there is no need to perform the operation of clamping the material head 500, thereby simplifying the material taking process, improving the material taking efficiency, and shortening the molding cycle of the product 900. The optimization and automatic operation of the three-plate mold structure with the material head automatically falling is realized, with significant technical effects.

[0042] In this embodiment, the three-plate mold structure with automatic material head falling also includes a plurality of guide bolts 700, which extend along the working direction. The screw rods of the guide bolts 700 pass through the stripping plate 200 and are screwed to the fixed plate 100; when the stripping plate 200 is located at the extreme position away from the fixed plate 100, the stripping plate 200 presses against the screw heads of the guide bolts 700.

[0043] By providing the guide bolt 700, the stripper plate 200 can move along the guide of the guide bolt 700, so that the position of the stripper plate 200 can be accurately controlled, and at the same time, the stability of the stripper plate 200 during the movement is ensured, and the stripper plate 200 can press against the screw head at a specific position to achieve positioning, thereby facilitating the smooth falling of the material head 500. The above improvements enhance the stability and operability of the three-plate mold structure with automatic falling of the material head.

[0044] Furthermore, the stripping plate 200 is penetrated by a first avoidance hole, the number of the first avoidance holes is the same as the number of the guide bolts 700 and they correspond one to one, and the guide bolts 700 are clearance-matched with the first avoidance holes.

[0045] The clearance between the first avoidance hole provided on the stripping plate 200 and the guide bolt 700 is matched, which reduces the probability of the guide bolt 700 driving the stripping plate 200 to move in advance, making the stripping plate 200 move more smoothly and enabling the stripping plate 200 to move as expected, thereby optimizing the movement trajectory of the stripping plate 200, reducing friction resistance, and extending the service life of the three-plate mold structure with automatic material head falling.

[0046] In this embodiment, a guide post 120 extending along the working direction is further fixedly connected to the fixing plate 100 . The guide post 120 passes through the female template 300 and can be detachably plugged into the male template 400 .

[0047] The design of the guide column 120 on the fixed plate 100 not only provides a guide for the movement of the female template 300, but also enhances the overall stability of the three-plate mold structure with the material head automatically falling. At the same time, the detachable plug-in design of the guide column 120 and the male template 400 facilitates the assembly and disassembly of the three-plate mold structure with the material head automatically falling, thereby enhancing the integrity and adjustability of the structure and reducing the difficulty of taking the product 900.

[0048] In this embodiment, the male template 400 is provided with a second positioning groove 410, and the guide column 120 is matched and inserted into the second positioning groove 410. Specifically, there are four guide columns 120, which are located at the four corners of the fixed plate 100, and the number of the second positioning grooves 410 and the number of the guide columns 120 are the same and correspond one to one.

[0049] Furthermore, a linear bearing 320 is provided on the mother template 300 , and the linear bearing 320 is slidably matched with the guide column 120 .

[0050] The sliding cooperation between the linear bearing 320 and the guide column 120 on the mother template 300 reduces friction loss, improves the smoothness of the movement of the three-plate mold structure with automatic material head falling, and further ensures the stability and accuracy of the movement of the mother template 300.

[0051] Exemplarily, a plurality of first positioning grooves are recessed on the female template 300, and a plurality of positioning posts 420 are disposed on the male template 400. The number of the positioning posts 420 is the same as the number of the first positioning grooves, and each positioning post 420 can be detachably inserted into a first positioning groove.

[0052] Through the cooperation of the first positioning groove and the positioning column 420, the female template 300 and the male template 400 can be accurately aligned and fixed, thereby achieving accurate positioning and connection, improving the assembly accuracy of the three-plate mold structure with automatic material head falling, and improving the accuracy and stability of the structure.

[0053] Furthermore, the positioning column 420 is made of nylon.

[0054] The positioning column 420 made of nylon has good wear resistance and self-lubricating properties, which can reduce the friction between the positioning column 420 and the template, extend the service life, reduce the overall weight of the three-plate mold structure with automatic material head falling, and at the same time have good wear resistance and impact resistance.

[0055] In this embodiment, the stripping plate 200 is penetrated by second avoidance holes, the number of the second avoidance holes is the same as that of the flow channel tubes 520 and they correspond one to one, and the flow channel tubes 520 and the second avoidance holes are gap-matched.

[0056] The second avoidance hole on the stripping plate 200 cooperates with the clearance of the flow tube 520, so that the flow tube 520 can smoothly pass through the stripping plate 200, reducing friction resistance and further optimizing the specific structure of the three-plate mold structure with automatic material head falling.

[0057] Exemplarily, the working direction is parallel to the ground.

[0058] The design of the working direction being parallel to the ground reduces the difficulty of the material head 500 falling from the stripping plate 200, and also makes the material taking operation more convenient, improves the work efficiency, and facilitates the disassembly and assembly of the three-plate mold structure with the material head automatically falling.

[0059] This embodiment also provides a material taking method for a three-plate mold structure with a material head automatically falling, which is applied to the above-mentioned three-plate mold structure with a material head automatically falling, and includes the following steps:

[0060] Step 1: Control the fixing plate 100 to move away from the mother plate 300 along the working direction, so that the diverter 510 is separated from the filling nozzle 110 .

[0061] Step 2: Continue to control the fixed plate 100 to move away from the mother template 300, so that the fixed plate 100 drives the stripping plate 200 to move away from the mother template 300 along the working direction until the flow channel tube 520 is separated from the mother template 300 and then falls from the stripping plate 200.

[0062] Step three: Control the female template 300 to move away from the male template 400, and then take out the product 900.

[0063] When performing step one, the three-plate mold structure with the material head automatically falling is switched from the injection molding state to the first state; when performing step two, the three-plate mold structure with the material head automatically falling is switched from the first state to the second state; when performing step three, the three-plate mold structure with the material head automatically falling is switched from the second state to the third state.

[0064] The method completes a series of precise control steps by controlling the movement of the fixing plate 100, thereby realizing the automatic separation of the material head 500 and the smooth removal of the product 900, simplifying the operation process and improving work efficiency. The above method has the advantages of convenient operation, high efficiency and strong stability, and can effectively improve production efficiency and finished product quality.

[0065] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A three-plate mold structure with automatic material head falling, comprising a fixed plate (100), a female mold plate (300) and a male mold plate (400) arranged in sequence along a working direction, wherein the female mold plate (300) and the male mold plate (400) enclose a receiving cavity for receiving a product (900), and a filling nozzle (110) is provided on the fixed plate (100), characterized in that: A receiving groove (310) is recessed on one side of the mother template (300) close to the fixed plate (100), a stripping plate (200) is arranged in the receiving groove (310), a material head (500) is arranged on one side of the stripping plate (200) close to the fixed plate (100), the stripping plate (200) can move relative to the fixed plate (100) along the working direction, the material head (500) includes a diverter (510) and a plurality of flow channel tubes (520) connected to the diverter (510), the flow channel tubes (520) extend along the working direction, the diverter (510) is detachably connected to the filling nozzle (110), and the flow channel tubes (520) can pass through the stripping plate (200) and the mother template (300) and extend into the receiving cavity.

2. The three-plate mold structure with automatic material head falling according to claim 1 is characterized in that: The three-plate mold structure with automatic material head falling also includes a plurality of guide bolts (700), wherein the guide bolts (700) extend along the working direction, and the screw rods of the guide bolts (700) pass through the stripping plate (200) and are screwed to the fixed plate (100); when the stripping plate (200) is located at an extreme position away from the fixed plate (100), the stripping plate (200) presses against the screw heads of the guide bolts (700).

3. The three-plate mold structure with automatic material head falling according to claim 2 is characterized in that: The stripping plate (200) is penetrated by a first avoidance hole, the first avoidance holes are the same in number and correspond one to one with the guide bolts (700), and the guide bolts (700) are clearance-matched with the first avoidance holes.

4. The three-plate mold structure with automatic material head falling according to claim 1 is characterized in that: The fixing plate (100) is also fixedly connected with a guide column (120) extending along the working direction. The guide column (120) passes through the female template (300) and can be detachably plugged into the male template (400).

5. The three-plate mold structure with automatic material head falling according to claim 4 is characterized in that: The mother template (300) is provided with a linear bearing (320), and the linear bearing (320) is slidably matched with the guide column (120).

6. The three-plate mold structure with automatic material head falling according to claim 4 is characterized in that: The female template (300) is provided with a plurality of first positioning grooves, and the male template (400) is provided with a plurality of positioning columns (420). The number of the positioning columns (420) is the same as the number of the first positioning grooves, and each of the positioning columns (420) can be detachably inserted into one of the first positioning grooves.

7. The three-plate mold structure with automatic material head falling according to claim 6 is characterized in that: The material of the positioning column (420) is nylon.

8. The three-plate mold structure with automatic material head falling according to claim 1 is characterized in that: The stripping plate (200) is penetrated by a second avoidance hole, the second avoidance holes are the same in number and correspond one to one with the flow channel tubes (520), and the flow channel tubes (520) are clearance-matched with the second avoidance holes.

9. The three-plate mold structure with automatic material head falling according to any one of claims 1 to 8, characterized in that: The working direction is parallel to the ground.

10. A material taking method for a three-plate mold structure with automatic material head falling, applied to the three-plate mold structure with automatic material head falling as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1: controlling the fixing plate (100) to move away from the mother template (300) along the working direction, so that the flow dividing member (510) is separated from the filling nozzle (110); S2: Continue to control the fixed plate (100) to move away from the mother template (300), so that the fixed plate (100) drives the stripping plate (200) to move away from the mother template (300) along the working direction until the flow channel tube (520) is separated from the mother template (300) and then falls off the stripping plate (200); S3: Control the female template (300) to move away from the male template (400), and then take out the product (900).

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