A method of using a rail open mode injection mold

Abstract

The application discloses a kind of guide rail opening mode injection mold's use method, comprising the following steps: clamping, moving base upwards, make lower mould assembly synchronous upward movement, drive rod is limited under the drive slot group and opposite, first module and second module also opposite, so that lower mould assembly is folded to form a whole, at this time, after moving upper mould assembly with lower mould assembly, first cavity and second cavity cooperate to form cavity, half type hole group forms type hole, half gate group forms gate;Injection, melt glue is injected from the glue passage on upper mould assembly, melt glue flows in injection channel and enters the workpiece injection cavity formed by type hole and cavity from gate, until melt glue is cooled in injection cavity, ready to open mold;Open mold, move base downwards, because drive rod is and base as a whole, so drive rod will also slide relative to guide rail plate, under the restraint of drive slot group, so that the barb structure of cooled injection part is separated from type hole.

Description

Technical Field

[0001] This invention relates to the field of mold technology, and in particular to a method of using a guide rail opening type injection mold. Background Technology

[0002] When injection molding complex products with barbs, a guide rail opening method is needed to prevent mechanical interference between the barbs and the mold during mold opening. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a method for using a guide rail open-type injection mold, which can injection mold product parts with barbs.

[0004] A method of using a guide rail opening type injection mold according to a first aspect embodiment of the present invention is applied to a guide rail opening type injection mold, the guide rail opening type injection mold comprising:

[0005] Base;

[0006] The lower mold assembly includes a mold core, a first module, and a second module. The mold core is embedded in the base. Both the first module and the second module are provided with semi-shaped holes. Two opposite semi-shaped holes form a molded hole. Both the first module and the second module are provided with semi-sprue gates. The semi-sprue gates are connected to the corresponding semi-shaped holes. Two opposite semi-sprue gates form a sprue gate. The sprue gate is connected to the molded hole. The mold core is provided with an arc-shaped first mold cavity.

[0007] A glue injection block is disposed on the base. The glue injection block is provided with a glue injection channel, which is connected to the water inlet. The glue injection block is provided with a first waist-shaped sliding hole.

[0008] A limiting block is connected to the base. The limiting block is provided with a second waist-shaped sliding hole. A sliding channel is defined between the limiting block and the injection block. The first module and the second module are both slidably disposed in the sliding channel. The first module and the second module in the same lower mold assembly can be relatively close or far apart in the sliding channel.

[0009] A drive rod is provided, which is connected to both the first module and the second module. The drive rod passes through the first waist-shaped sliding hole and the second waist-shaped sliding hole.

[0010] The guide rail plate is provided with a drive groove group, the upper end of the drive groove group is narrowed, the drive groove group includes two drive grooves, and the end of the drive rod passes through the corresponding drive groove.

[0011] An upper mold assembly is used to be close to or away from the lower mold assembly. The upper mold assembly is provided with a second mold cavity, which cooperates with the first mold cavity to form a mold cavity.

[0012] The method includes the following steps:

[0013] The mold is closed, and the base is moved upward, causing the lower mold assembly to move upward synchronously. The drive rods close towards each other under the constraint of the drive groove group, and the first module and the second module also close towards each other, so that the lower mold assembly is closed to form a whole. At this time, the upper mold assembly is moved and closed with the lower mold assembly, so that the first mold cavity and the second mold cavity cooperate to form a cavity, the half-holes form the hole, and the half-gates form the gate.

[0014] Injection: Molten glue is injected from the glue channel on the upper mold assembly. The molten glue flows in the injection channel and enters the workpiece injection cavity formed by the sprue and the mold cavity from the gate. After the molten glue cools in the injection cavity, the mold is ready to be opened.

[0015] The mold is opened, and the base is moved downward. Since the driving rod is an integral part of the base, the driving rod will also slide relative to the guide plate. Under the constraint of the driving groove group, the first module or the second module will be driven to move away from each other by its corresponding driving rod, thereby causing the barb structure of the cooled injection molded part to separate from the cavity.

[0016] According to an embodiment of the present invention, a method for using a guide rail-type injection mold has at least the following beneficial effects: Under the drive of the drive rod, the first module and the second module can close or open relative to the mold core, thereby allowing the die hole to separate or combine. This facilitates the smooth ejection of the injection molded part when a barb structure is formed in the die hole. The guide rail plate, in conjunction with the drive rod and the first and second waist-shaped sliding holes, allows the first module and the second module to separate or close using the path of the drive groove group when the drive rod slides relative to the drive groove group. The structure is simple, easy to implement, and easy to operate.

[0017] According to some embodiments of the present invention, a plurality of lower mold assemblies are provided, and the plurality of lower mold assemblies are arranged along the extension direction of the sliding channel. The drive slot group is provided in a one-to-one correspondence with the lower mold assembly, thereby increasing the number of lower mold assemblies and improving production efficiency.

[0018] According to some embodiments of the present invention, the lower ends of the limiting block and the glue injection block are provided with sliding grooves, and the lower ends of the first module and the second module are provided with sliding platforms that match the sliding grooves. The sliding platforms are slidably engaged with the corresponding sliding grooves. The sliding grooves can serve both as guides and as anti-detachment mechanisms.

[0019] According to some embodiments of the present invention, the workpiece ejector pin is further included, which is configured to correspond one-to-one with the molded hole. The workpiece ejector pin is slidably disposed vertically on the injection block. The workpiece ejector pin is coaxially disposed with the molded hole. The workpiece ejector pin is used to eject the injection molded part on the lower mold assembly. The workpiece ejector pin is ejected from the molded hole and contacts the barb structure of the injection molded hole on the front, which facilitates ejecting the product.

[0020] According to some embodiments of the present invention, a sprue ejector pin is further included, which is slidably disposed vertically on the injection block. The sprue ejector pin is used to eject the sprue part on the injection block to prevent the sprue part from blocking the injection channel.

[0021] According to some embodiments of the present invention, a discharge step is also included, in which the sprue ejector first pushes upward, so that the sprue part on the injection block is lifted, thereby separating the injection molded part from the sprue part, and then the workpiece ejector pushes upward to eject the entire injection molded part.

[0022] According to some embodiments of the present invention, the lower mold assembly is provided on both sides of the injection block, making full use of the space on both sides of the injection block, so that the entire mold layout is symmetrical and saves space.

[0023] According to some embodiments of the present invention, a guide pad is also included, and the lower mold assembly is disposed on the guide pad.

[0024] According to some embodiments of the present invention, both the injection block and the limiting block are fixed to the base by bolts.

[0025] According to some embodiments of the present invention, both the first module and the second module are provided with guide slopes, which facilitate the mating and docking of the lower mold assembly and the upper mold assembly.

[0026] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0028] Figure 1This is a schematic diagram of the structure of the guide rail opening injection mold according to an embodiment of the present invention;

[0029] Figure 2 for Figure 1 The explosion of the guide rail opening mode injection mold shown Figure 1 ;

[0030] Figure 3 for Figure 1 The explosion of the guide rail opening mode injection mold shown Figure 2 ;

[0031] Figure 4 for Figure 1 The diagram shows a top-view view of the upper mold assembly of a guide rail open-type injection mold.

[0032] Base 100;

[0033] Lower mold assembly 200, slide table 200a, mold core 210, first mold cavity 211, first module 220;

[0034] Second module 230, orifice 231, sprue 232;

[0035] Glue injection block 300, glue injection channel 310, first waist-shaped sliding hole 320;

[0036] Limiting block 400, second oblong sliding hole 410, sliding channel 420;

[0037] Drive rod 500, guide rail plate 600, drive slot group 610, drive slot 611;

[0038] 700 chute, 800a workpiece ejector pin, 800b sprue ejector pin;

[0039] Upper mold assembly 900, second mold cavity 910, guide sliding pad 920, guide insertion inclined surface 900a. Detailed Implementation

[0040] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0041] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0042] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0043] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0044] Reference Figures 1 to 4 A method for using a guide rail open-type injection mold is disclosed. The guide rail open-type injection mold includes: a base 100; and a lower mold assembly 200, including a mold core 210, a first module 220, and a second module 230. The mold core 210 is embedded in the base 100. Both the first module 220 and the second module 230 are provided with semi-circular holes, and two opposing semi-circular holes form a single cavity 231. Both the first module 220 and the second module 230 are provided with semi-circular water... The sprue 232 is formed by two half-sprues connected to the corresponding half-holes. The sprue 232 connects to the half-hole 231. An arc-shaped first mold cavity 211 is provided on the mold core 210. An injection block 300 is provided on the base 100, and an injection channel 310 is provided on the injection block 300, connecting to the sprue 232. A first waist-shaped sliding hole 320 is provided on the injection block 300. A limiting block 400 is connected to the base 100, and a limiting block 400 is provided with... A second waist-shaped sliding hole 410 is provided, and a sliding channel 420 is defined between the limiting block 400 and the injection block 300. The first module 220 and the second module 230 are both slidably disposed in the sliding channel 420. The first module 220 and the second module 230 in the same lower mold assembly 200 can be relatively close or far apart in the sliding channel 420. A drive rod 500 is provided, and the first module 220 and the second module 230 are both connected to the drive rod 500. The drive rod 500 passes through the first waist-shaped sliding hole 410. Hole 320 and second waist-shaped sliding hole 410; guide plate 600, provided with drive groove group 610, the upper end of drive groove group 610 is narrowed, drive groove group 610 includes two drive grooves 611, the end of drive rod 500 passes through the corresponding drive groove 611; upper mold assembly 900, upper mold assembly 900 is used to approach or move away from lower mold assembly 200, upper mold assembly 900 is provided with second mold cavity 910, second mold cavity 910 cooperates with first mold cavity 211 to form a cavity;

[0045] The method includes the following steps:

[0046] The mold is closed, and the base 100 is moved upward, causing the lower mold assembly 200 to move upward synchronously. The drive rods 500 close towards each other under the restriction of the drive groove group 610. The first module 220 and the second module 230 also close towards each other, so that the lower mold assembly 200 closes to form a whole. At this time, the upper mold assembly 900 is moved and closes with the lower mold assembly 200, so that the first mold cavity 211 and the second mold cavity 910 cooperate to form a cavity, the half-hole forms the mold hole 231, and the half-gate forms the gate 232.

[0047] Injection: Molten glue is injected from the glue channel on the upper mold assembly 900. The molten glue flows in the injection channel 310 and enters the workpiece injection cavity formed by the sprue 232 and the mold cavity. After the molten glue cools in the injection cavity, the mold is ready to be opened.

[0048] The mold is opened and the base 100 is moved downward. Since the drive rod 500 is an integral part of the base 100, the drive rod 500 will also slide relative to the guide plate 600. Under the constraint of the drive groove group 610, the first module 220 or the second module 230 will be driven to move apart by its corresponding drive rod 500, thereby causing the barb structure of the cooled injection molded part to separate from the hole 231.

[0049] Driven by the drive rod 500, the first module 220 and the second module 230 can close or open relative to the mold core 210, thereby allowing the cavity 231 to separate or combine. When a barb structure is formed in the cavity 231, it can also facilitate the smooth ejection of the injection molded part. The guide plate 600, in conjunction with the drive rod 500 and the first waist-shaped sliding hole 320 and the second waist-shaped sliding hole 410, drives the first module 220 and the second module 230 to separate or close using the path of the drive groove group 610 when the drive rod 500 slides relative to the drive groove group 610. The structure is simple and easy to implement and operate.

[0050] It is understandable that when the base 100 and the guide rail plate 600 slide relative to each other in the vertical direction, since the drive rod 500 is an integral part of the base 100, the drive rod 500 will also slide relative to the guide rail plate 600. Under the constraint of the drive groove group 610 on the guide rail plate 600, the drive rod 500 will generate movement in the horizontal plane. Since the drive rod 500 is connected to the first module 220 or the second module 230, the first module 220 or the second module 230 will be driven to slide by its corresponding drive rod 500. The first waist-shaped sliding hole 320 and the second waist-shaped sliding hole 410 play a role in making way for the drive rod 500, and also play a role in limiting the sliding distance of the drive rod 500. That is, the sliding distance of the first module 220 or the second module 230 will also be limited by the length of the first waist-shaped sliding hole 320 and the second waist-shaped sliding hole 410.

[0051] In some embodiments, a plurality of lower mold assemblies 200 are provided, arranged along the extension direction of the sliding channel 420. The drive slot group 610 is correspondingly arranged one-to-one with each lower mold assembly 200, increasing the number of lower mold assemblies 200 and improving production efficiency. It is understood that the lower mold assemblies 200 are distributed on both sides of the injection block 300, which is a cuboid block. The two sides refer to the two sides along the length extension direction of the injection block 300. The same number of lower mold assemblies 200 are provided on both sides of the injection block 300, and the lower mold assemblies 200 on both sides of the injection block 300 are symmetrically arranged about the axis of the injection block 300.

[0052] In some embodiments, the lower ends of both the limiting block 400 and the glue injection block 300 are provided with sliding grooves 700, and the lower ends of both the first module 220 and the second module 230 are provided with sliding platforms 200a that match the sliding grooves 700. The sliding platforms 200a are slidably engaged with the corresponding sliding grooves 700. The sliding grooves 700 serve both as guides and as anti-detachment mechanisms. It is understood that the sliding grooves 700 are inverted T-shaped, while the sliding platforms 200a are T-shaped. Their interlocking ensures smooth sliding and prevents the sliding platforms 200a from detaching from the sliding grooves 700.

[0053] In some embodiments, the system further includes a workpiece ejector pin 800a, which is configured to correspond one-to-one with the molded hole 231. The workpiece ejector pin 800a is vertically slidably disposed on the injection block 300 and coaxially disposed with the molded hole 231. The workpiece ejector pin 800a is used to eject the injection molded part from the lower mold assembly 200. The workpiece ejector pin 800a is ejected from the molded hole 231 and contacts the barb structure of the injection molded hole 231 on its front side, facilitating the ejection of the product. It is understood that both the workpiece ejector pin 800a and the sprue ejector pin 800b are driven by a cylinder or hydraulic cylinder, or by a linear motor, or by a crank-slider mechanism.

[0054] In some embodiments, the system further includes a sprue ejector pin 800b, which is slidably disposed vertically on the injection block 300. The sprue ejector pin 800b is used to eject the sprue part on the injection block 300 to prevent the sprue part from blocking the injection channel.

[0055] In some embodiments, the base 100 is provided with a positioning mounting groove, and the limiting block 400 is provided with a positioning insert, and the limiting block 400 is positioned and installed in the positioning mounting groove by the positioning insert.

[0056] In some embodiments, a discharge step is also included, in which the sprue ejector pin 800b first pushes upward, causing the sprue part on the injection block 300 to be lifted, thus separating the injection molded part from the sprue part, and then the workpiece ejector pin 800a pushes upward to eject the entire injection molded part.

[0057] In some embodiments, lower mold components 200 are provided on both sides of the injection block 300, making full use of the space on both sides of the injection block 300, so that the entire mold layout is symmetrical and saves space.

[0058] In some embodiments, a guide plate 920 is also included, and the lower mold assembly 200 is disposed on the guide plate 920. It is understood that the guide plate 920 is made of materials such as ceramic or stainless steel.

[0059] In some embodiments, both the injection block 300 and the limiting block 400 are fixed to the base 100 by bolts.

[0060] In some embodiments, both the first module 220 and the second module 230 are provided with guide slopes 900a, which facilitate the lower mold assembly 200 and the upper mold assembly 900 to cooperate and connect.

[0061] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A method of using a guide rail opening type injection mold, characterized in that, This is applied to a guide rail opening type injection mold, the guide rail opening type injection mold comprising: Base (100); The lower mold assembly (200) includes a mold core (210), a first module (220), and a second module (230). The mold core (210) is embedded in the base (100). The first module (220) and the second module (230) are each provided with a semi-shaped hole. Two opposite semi-shaped holes form a shaped hole (231). The first module (220) and the second module (230) are each provided with a semi-sprue. The semi-sprue connects to the corresponding semi-shaped hole. Two opposite semi-sprue form a sprue (232). The sprue (232) connects to the shaped hole (231). The mold core (210) is provided with an arc-shaped first mold cavity (211). A glue injection block (300) is disposed on the base (100). A glue injection channel (310) is provided on the glue injection block (300). The glue injection channel (310) is connected to the sprue (232). A first waist-shaped sliding hole (320) is provided on the glue injection block (300). A limiting block (400) is connected to the base (100). The limiting block (400) is provided with a second waist-shaped sliding hole (410). A sliding channel (420) is defined between the limiting block (400) and the injection block (300). The first module (220) and the second module (230) are both slidably disposed in the sliding channel (420). The first module (220) and the second module (230) in the same lower mold assembly (200) can be relatively close or far apart in the sliding channel (420). The drive rod (500) is connected to both the first module (220) and the second module (230). The drive rod (500) passes through the first waist-shaped sliding hole (320) and the second waist-shaped sliding hole (410). The guide plate (600) is provided with a drive groove group (610), the upper end of the drive groove group (610) is narrowed, the drive groove group (610) includes two drive grooves (611), and the end of the drive rod (500) passes through the corresponding drive groove (611). An upper mold assembly (900) is provided to be close to or away from the lower mold assembly (200). The upper mold assembly (900) is provided with a second mold cavity (910), which cooperates with the first mold cavity (211) to form a mold cavity. The workpiece ejector pin (800a) is configured to correspond one-to-one with the molded hole (231). The workpiece ejector pin (800a) is slidably disposed vertically on the injection block (300). The workpiece ejector pin (800a) is coaxially disposed with the molded hole (231). The workpiece ejector pin (800a) is used to eject the injection molded part on the lower mold assembly (200). A sprue ejector pin (800b) is vertically slidably disposed on the glue injection block (300), and the sprue ejector pin (800b) is used to eject the sprue part on the glue injection block (300); The method includes the following steps: The mold is closed, and the base (100) is moved upward, causing the lower mold assembly (200) to move upward synchronously. The drive rods (500) close towards each other under the constraint of the drive groove group (610). The first module (220) and the second module (230) also close towards each other, so that the lower mold assembly (200) closes to form a whole. At this time, the upper mold assembly (900) is moved and then closed with the lower mold assembly (200), so that the first mold cavity (211) and the second mold cavity (910) cooperate to form a cavity. The half-holes form the mold hole (231), and the half-gates form the gate (232). Injecting molten adhesive: Molten adhesive is injected from the adhesive channel on the upper mold assembly (900). The molten adhesive flows in the injection channel (310) and enters the workpiece injection cavity formed by the sprue (232) and the cavity. After the molten adhesive cools in the injection cavity, the mold is ready to be opened. Open the mold and move the base (100) downward. Since the drive rod (500) is an integral part of the base (100), the drive rod (500) will also slide relative to the guide plate (600). Under the constraint of the drive groove group (610), the first module (220) or the second module (230) will be driven to move apart by their respective drive rods (500), thereby causing the barb structure of the cooled injection molded part to separate from the hole (231). During material discharge, the sprue ejector pin (800b) first pushes upward, causing the sprue part on the injection block (300) to be lifted, thus separating the injection molded part from the sprue part. Then, the workpiece ejector pin (800a) pushes upward, ejecting the entire injection molded part.

2. The method of using a guide rail opening injection mold according to claim 1, characterized in that: The lower mold assembly (200) is provided in a plurality of such assemblies, which are arranged along the extension direction of the sliding channel (420). The drive slot group (610) is provided in a one-to-one correspondence with the lower mold assembly (200).

3. The method of using a guide rail opening injection mold according to claim 2, characterized in that: The lower ends of the limiting block (400) and the glue injection block (300) are provided with a sliding groove (700), and the lower ends of the first module (220) and the second module (230) are provided with a sliding table (200a) that matches the sliding groove (700). The sliding table (200a) is slidably engaged with the corresponding sliding groove (700).

4. The method of using a guide rail opening injection mold according to claim 1, characterized in that: The lower mold assembly (200) is provided on both sides of the injection block (300).

5. The method of using a guide rail opening injection mold according to claim 1, characterized in that: It also includes a guide plate (920), on which the lower mold assembly (200) is disposed.

6. The method of using a guide rail opening injection mold according to claim 1, characterized in that: Both the glue injection block (300) and the limiting block (400) are fixed to the base (100) by bolts.

7. The method of using a guide rail opening injection mold according to claim 1, characterized in that: Both the first module (220) and the second module (230) are provided with guide slopes (900a).

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