Sliding block submarine gate structure capable of being automatically ejected out and application method

Abstract

The invention relates to a sliding block diving gate structure capable of being automatically ejected out and an application method, the sliding block diving gate structure comprises a front mold and a rear mold, the front mold is provided with a main runner, the rear mold is provided with a sliding block sliding transversely, and the sliding block is provided with two branch runners connected with the main runner and runner inserts matched with the branch runners; an inclined guide column for driving the sliding block to move is arranged on the front mold, and an inclined guide groove matched with the inclined guide column is formed in the sliding block; according to the injection mold, the insert plays a role in prolonging the ejector rod while playing a role in prolonging the ejector rod, meanwhile, the sliding block is used for separating the runner, locking and unlocking the state of the insert, and adjusting the relative position of the insert and the ejector rod, so that smooth injection molding is guaranteed, and the service life of the injection mold is prolonged. Therefore, the problem that interference exists when the insert and the ejector rod are arranged can be well solved, the structure is reasonable and compact, the automation degree is high, and additional manual intervention is not needed.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, and more specifically to a submerged gate structure of a slider capable of automatically ejecting and an application method thereof. Background Art

[0002] In practical applications, injection molds involve the processing of a type of plastic products with relatively high requirements on the surface appearance. Submersible gates are required for injection molding. After the processing is completed, a longer ejector pin needs to be designed to eject the submersible gate. For example, the Chinese application, application number 201922266151.2 discloses a submersible gate injection structure based on an inclined top. The gate ejector pin has a large stroke and the overall mold structure is relatively complex. If a gate insert needs to be set to cooperate with the injection molding, there will be interference between the ejector pin and the insert position. The existing submersible gate structure cannot cope with this problem. In order to solve this industry problem, a slider submersible gate structure with automatic ejection and an application method are needed. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a slider submersible gate structure that can be automatically ejected in view of the above-mentioned defects of the prior art, and also provide an application method of the slider submersible gate structure that can be automatically ejected.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A slider submerged gate structure capable of automatic ejection is constructed, wherein the structure comprises a front mold and a rear mold, wherein the front mold is provided with a main flow channel, the rear mold is provided with a slider for transverse sliding, the slider is provided with two branch flow channels connected to the main flow channel and a flow channel insert matched with the branch flow channels; the front mold is provided with an inclined guide column for driving the slider to move, the slider is provided with an inclined guide groove matched with the inclined guide column; the flow channel insert comprises three insert rods distributed in a triangular shape, the upper ends of the three insert rods are provided with a groove matched with the branch flow channel, and the slider is provided with a groove matched with the guide column. The first step of the mold is closed; three movable grooves cooperating with the insert rod are arranged on the slider, the lower end of the insert rod is formed with an L-shaped second step, and the inner wall of the movable groove is movably provided with a limit block for limiting the second step; when the mold is closed, the limit block locks the corresponding insert rod, and when the mold is opened, the slider first moves a first set stroke, and then drives the limit block to move a second set stroke to unlock the insert rod; it also includes three ejectors corresponding to the insert rods, respectively, and the ejectors are used to provide support force for the insert rod and lift the insert rod.

[0006] The automatically ejectable slider submersible gate structure of the present invention is characterized in that the lateral sides of the three second steps are distributed in a T-shape, and the length direction of the longitudinal side of the T-shape is consistent with the sliding direction of the slider.

[0007] The automatically ejectable slider submersible gate structure described in the present invention is characterized in that the limit block is in the shape of a vertical plate, and a movable hole for the limit block to move horizontally is provided in the slider, and the movable hole connects the corresponding movable groove and the inclined guide groove.

[0008] The slider submersible gate structure capable of automatic ejection described in the present invention is characterized in that a reset spring for resetting the limit block is arranged in the movable hole.

[0009] The automatically ejectable slider submersible gate structure described in the present invention is characterized in that the limit block is provided with a driving block extending into the inclined guide groove; when the mold is opened, the slider first moves a first set stroke and the driving block is in a state of being pressed by the inclined guide column. When the driving block is out of the state of being pressed by the inclined guide column, the limit block is driven to move a second set stroke under the action of the return spring to unlock the insert rod.

[0010] The slider submersible gate structure capable of automatic ejection described in the present invention is characterized in that the cross section of the inclined guide column is rectangular.

[0011] The automatically ejectable slider submersible gate structure of the present invention is characterized in that the two branch runners are distributed in a π shape, and the three first steps correspond to the three sides of the π shape respectively.

[0012] An application method of a slider submersible gate structure capable of automatic ejection is applied to the slider submersible gate structure capable of automatic ejection as described above, wherein the method comprises the steps of:

[0013] When the mold is closed, the three insert rods are supported by the corresponding ejector pins, the upper mold moves downward, and the slide block is driven to slide horizontally inward through the cooperation of the inclined guide column and the inclined guide groove, and the limit block locks the corresponding insert rod; after the mold is closed, the upper mold presses the upper end of the insert rod;

[0014] After the injection molding is completed, the mold is opened, the upper mold moves upward, and the slider is driven to slide horizontally outward through the cooperation of the inclined guide column and the inclined guide groove. The slider first moves the first set stroke to drive the runner to move away from the product, and then the limit block moves the second set stroke to unlock the insert rod;

[0015] The ejector pin provides support for the insert rod during the mold opening and closing processes, and lifts up the insert rod after the limit block releases the lock on the insert rod when the mold is opened, so that the runner is separated from the slider.

[0016] The beneficial effects of the present invention are as follows: when the mold is closed, the three insert rods are supported by the corresponding ejector pins, the upper mold moves downward, and the cooperation of the inclined guide column and the inclined guide groove drives the slider to slide laterally inward, and the limit block locks the corresponding insert rod; after the mold is closed, the upper mold presses the upper end of the insert rod; after the injection molding is completed, the mold is opened, the upper mold moves upward, and the cooperation of the inclined guide column and the inclined guide groove drives the slider to slide laterally outward, the slider first moves a first set stroke to drive the runner to move away from the product, and then the limit block moves a second set stroke to unlock the insert rod; the ejector pin is used in the mold opening and mold closing process The middle provides support force for the insert rod, and when the mold is opened, the limit block releases the lock on the insert rod and lifts up the insert rod, so that the runner is separated from the slider; when the injection mold of the present application is applied, the insert not only plays its own function, but also plays the role of extending the push rod. At the same time, the slider is not only used to separate the runner, but also to lock and unlock the state of the insert, and adjust the relative position of the insert and the push rod to ensure the smooth progress of injection molding, thereby effectively solving the problem of interference between the insert and the push rod when setting. The structure is reasonable and compact, with a high degree of automation and no additional manual intervention is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work:

[0018] Figure 1 It is a cross-sectional view of a submersible gate structure of a slider capable of automatic ejection according to a preferred embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the matching structure of the runner and runner insert of the automatically ejectable slider submersible gate structure of a preferred embodiment of the present invention (partially showing the limit block). DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0021] The slider submersible gate structure capable of automatic ejection in a preferred embodiment of the present invention is as follows: Figure 1 As shown, Figure 2As shown, it comprises a front mold and a rear mold, the front mold is provided with a main flow channel, the rear mold is provided with a slider 1 for transverse sliding, the slider 1 is provided with two branch flow channels 2 connecting the main flow channel and a flow channel insert 3 cooperating with the branch flow channels 2; the front mold is provided with an inclined guide column 4 for driving the slider 1 to move, the slider 1 is provided with an inclined guide groove 10 cooperating with the inclined guide column; the flow channel insert 3 comprises three insert rods 30 distributed in a triangular shape, the upper ends of the three insert rods 30 are all provided with a first step 300 cooperating with the branch flow channel 2; the slider 1 is provided with three first steps 300 cooperating with the insert The movable groove 11 cooperates with the insert rod 30, and the lower end of the insert rod 30 is formed with an L-shaped second step 301, and the inner wall of the movable groove 11 is movably provided with a limit block 12 for limiting the second step 301; when the mold is closed, the limit block 12 locks the corresponding insert rod 30, and when the mold is opened, the slider 1 first moves the first set stroke, and then drives the limit block 12 to move the second set stroke to unlock the insert rod 30; it also includes three ejector pins 5 corresponding to the insert rod 30, and the ejector pins 5 are used to provide support force for the insert rod 30 and lift the insert rod 30;

[0022] When the mold is closed, the three insert rods 30 are supported by the corresponding ejector pins 5, and the upper mold moves downward, and the slide block 1 slides laterally inward through the cooperation of the inclined guide column 4 and the inclined guide groove 10, and the limit block 12 locks the corresponding insert rod 30;

[0023] After the mold is closed, the upper mold presses the upper end of the insert rod 30; after the injection molding is completed, the mold is opened, and the upper mold moves upward, and the slider 1 is driven to slide laterally outward through the cooperation of the inclined guide column 4 and the inclined guide groove 10. The slider 1 first moves the first set stroke to drive the flow channel to move away from the product, and then the limit block 12 moves the second set stroke to unlock the insert rod 30;

[0024] The ejector pin 5 provides support force to the insert rod 30 during the mold opening and mold closing processes, and lifts up the insert rod 30 after the limit block releases the lock on the insert rod 30 during mold opening, so that the runner is separated from the slider 1;

[0025] When applying the injection mold of the present application, the insert not only performs its own function, but also serves to extend the ejector rod. At the same time, the slider is not only used to separate the flow channel, but also can lock and unlock the state of the insert and adjust the relative position of the insert and the ejector rod to ensure the smooth progress of injection molding, thereby effectively solving the problem of interference between the insert and the ejector rod when setting. The structure is reasonable and compact, with a high degree of automation and no additional manual intervention is required.

[0026] Preferably, the lateral sides of the three second steps 301 are distributed in a T-shape, and the length direction of the longitudinal sides of the T-shape is consistent with the sliding direction of the slider 1. This layout design is adopted to ensure that the three limit blocks 12 can lock and unlock the three insert rods 30 at the same time to avoid interference.

[0027] Preferably, the limit block 12 is in the shape of a vertical plate, and a movable hole 13 for the limit block 12 to move horizontally is provided in the slider 1, the movable hole 13 is connected to the corresponding movable groove 11 and the oblique guide groove 10, and a reset spring 14 for resetting the limit block 12 is provided in the movable hole; the limit block 12 is provided with a driving block 120 extending into the oblique guide groove;

[0028] When the mold is opened, the slider 1 first moves the first set stroke and the driving block 120 is in a state of being pressed by the inclined guide column 4. When the driving block 120 is out of the state of being pressed by the inclined guide column 4, the limit block 12 is driven by the force of the reset spring 14 to move the second set stroke to unlock the insert rod 30. The structure is reasonable and compact, and the two-stage driving stroke has good stability.

[0029] Preferably, the cross section of the inclined guide pillar 4 is rectangular to ensure synchronous driving of the three driving blocks 120 .

[0030] Preferably, the two branch flow channels 2 are distributed in a π shape (connected by the middle flow channel), and the three first steps 301 correspond to the three sides of the π shape respectively.

[0031] An application method of a slider submersible gate structure capable of automatic ejection is applied to the slider submersible gate structure capable of automatic ejection as described above, wherein the method comprises the steps of:

[0032] When the mold is closed, the three insert rods are supported by the corresponding ejector pins, the upper mold moves downward, and the slide block is driven to slide horizontally inward through the cooperation of the inclined guide column and the inclined guide groove, and the limit block locks the corresponding insert rod; after the mold is closed, the upper mold presses the upper end of the insert rod;

[0033] After the injection molding is completed, the mold is opened, the upper mold moves upward, and the slider is driven to slide horizontally outward through the cooperation of the inclined guide column and the inclined guide groove. The slider first moves the first set stroke to drive the runner to move away from the product, and then the limit block moves the second set stroke to unlock the insert rod;

[0034] The ejector pin provides support for the insert rod during mold opening and mold closing, and lifts up the insert rod after the limit block releases the lock on the insert rod when the mold is opened, so that the runner is separated from the slider;

[0035] By applying the method and technique of the present application, the insert not only performs its own function, but also serves to extend the ejector rod. At the same time, the slider is not only used to separate the flow channel, but also can lock and unlock the state of the insert and adjust the relative position of the insert and the ejector rod to ensure the smooth progress of injection molding, thereby effectively solving the problem of interference between the insert and the ejector rod when setting. The structure is reasonable and compact, with a high degree of automation and no additional manual intervention is required.

[0036] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A slider submersible gate structure capable of automatic ejection, characterized in that: The mold comprises a front mold and a rear mold, wherein the front mold is provided with a main flow channel, the rear mold is provided with a slider for sliding laterally, the slider is provided with two branch flow channels connecting the main flow channel and a flow channel insert matched with the branch flow channels; the front mold is provided with an inclined guide column for driving the slider to move, and the slider is provided with an inclined guide groove matched with the inclined guide column; the flow channel insert comprises three insert rods distributed in a triangular shape, and the upper ends of the three insert rods are all provided with a first step matched with the branch flow channel; the slider is provided with three movable grooves matched with the insert rods, the lower end of the insert rod is formed with an L-shaped second step, and the inner wall of the movable groove is movably provided with a limit block for limiting the second step; when the mold is closed, the limit block locks the corresponding insert rod, and when the mold is opened, the slider first moves a first set stroke and then drives the limit block to move a second set stroke to unlock the insert rod; and it also comprises three ejectors corresponding to the insert rods respectively, and the ejectors are used to provide support force to the insert rod and lift the insert rod.

2. The slider submersible gate structure capable of automatic ejection according to claim 1, characterized in that: The transverse sides of the three second steps are distributed in a T-shape, and the length direction of the longitudinal side of the T-shape is consistent with the sliding direction of the slider.

3. The slider submersible gate structure capable of automatic ejection according to claim 2, characterized in that: The limit block is in the shape of a vertical plate, and a movable hole for the limit block to move horizontally is arranged in the sliding block, and the movable hole is connected to the corresponding movable groove and the inclined guide groove.

4. The slider submersible gate structure capable of automatic ejection according to claim 3 is characterized in that: A return spring for returning the limit block to its original position is arranged in the movable hole.

5. The slider submersible gate structure capable of automatic ejection according to claim 4, characterized in that: The limit block is provided with a driving block extending into the inclined guide groove; when the mold is opened, the driving block is in a state of being pressed by the inclined guide column when the slider first moves a first set stroke, and when the driving block is out of the state of being pressed by the inclined guide column, the limit block is driven to move a second set stroke under the action of the return spring to unlock the insert rod.

6. The slider submersible gate structure capable of automatic ejection according to claim 1, characterized in that: The cross section of the inclined guide column is rectangular.

7. The slider submersible gate structure capable of automatic ejection according to claim 1, characterized in that: The two branch flow channels are distributed in a π shape, and the three first steps correspond to the three sides of the π shape respectively.

8. An application method of a slider submersible gate structure capable of automatic ejection, applied to the slider submersible gate structure capable of automatic ejection as claimed in any one of claims 1 to 7, characterized in that: The method comprises the steps of: When the mold is closed, the three insert rods are supported by the corresponding ejector pins, the upper mold moves downward, and the slide block is driven to slide horizontally inward through the cooperation of the inclined guide column and the inclined guide groove, and the limit block locks the corresponding insert rod; after the mold is closed, the upper mold presses the upper end of the insert rod; After the injection molding is completed, the mold is opened, the upper mold moves upward, and the slider is driven to slide horizontally outward through the cooperation of the inclined guide column and the inclined guide groove. The slider first moves the first set stroke to drive the runner to move away from the product, and then the limit block moves the second set stroke to unlock the insert rod; The ejector pin provides support for the insert rod during the mold opening and closing processes, and when the mold is opened, the limit block releases the lock on the insert rod and lifts the insert rod, so that the runner is separated from the slider.

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