Parison mold and injection molding machine system

Abstract

The injection molding system comprises a core plate, a top plate and at least one slide plate assembly; the core plate is provided with guide columns, the top plate is configured to be guided to move by the guide columns; the slide plate assembly comprises at least a slide plate group comprising a first slide plate group and a second slide plate group, and is configured to have the following two opening and closing states: when the first slide plate group is opened in the state that the top plate moves along the guide columns, at least the second slide plate group remains in a closed state; when the second slide plate group is opened in the state that the top plate moves along the guide columns, at least the first slide plate group remains in a closed state; the first slide plate group and the second slide plate group are set to two opposite opening and closing states; the plastic products molded in the injection molding system are demolded in two times, thereby avoiding the problem that the first slide plate group and the second slide plate group need to be opened at the same time in one-time demolding and occupy the space of the injection molding system.

Description

Technical Field

[0001] This invention belongs to the field of mold technology, specifically relating to injection molds and injection molding machine systems. Background Technology

[0002] Generally, the manufacturing process of plastic bottles requires injection molding to form a preform, an intermediate product, which is then blow molded to form the finished plastic bottle. The preform is formed by injecting raw materials into the cavity of an injection mold under specific temperature and pressure conditions using an injection molding machine. To improve preform production efficiency, the injection mold is equipped with multiple cavities, allowing it to process multiple preforms at once. However, existing injection molds, such as the Chinese utility model patent with patent application number 201320315465.7, disclose a cam-driven mold opening and closing mechanism, including a template, a linkage assembly slidably disposed on the template, at least one set of mold lip mounting assemblies fixed to the linkage assembly, a mold lip fixed to the mold lip mounting assembly, a roller assembly fixed to the same end of the mold lip mounting assembly, and a guide groove movable plate disposed on one side of the roller assembly; wherein, the linkage assembly includes a first and a second linkage slidably disposed parallel to each other in the horizontal direction, and the mold lip mounting assembly includes two parallel adjacent mold lip mounting plates, with the same end of the two mold lip mounting plates respectively fixed... The roller assembly is fixed on the first and second connecting rods. It includes a first roller and a second roller. One end of one mold lip mounting plate fixed to the first connecting rod is fixedly connected to the shaft portion of the first roller, and one end of one mold lip mounting plate fixed to the second connecting rod is fixedly connected to the shaft portion of the second roller. A first guide groove and a second guide groove are provided on the side of the guide groove movable plate facing the roller assembly. The pulley portions of the first and second rollers are slidably disposed within the first and second guide grooves, respectively. The guide groove movable plate is movably mounted on the template in the vertical direction, and the distance between the first and second guide grooves gradually decreases in the vertical direction. During mold opening, all mold lip mounting assemblies open simultaneously. Therefore, space needs to be reserved between each set of mold lip mounting assemblies for mold opening. With this structure, the number of cavities is limited while the overall mold dimensions remain unchanged, making it difficult to increase the number of products injected at one time, and difficult to reduce production costs and improve production efficiency. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the present invention provides a technical solution for injection molding mold and injection molding machine system.

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

[0005] The injection mold includes a core plate, a top plate, and at least one sliding plate assembly; the core plate is provided with guide pillars, and the top plate is configured to be guided to move by the guide pillars; the sliding plate assembly includes a sliding plate group comprising at least a first sliding plate group and a second sliding plate group, configured to have the following two opening and closing states:

[0006] When the first sliding plate assembly is opened in the state of being pushed out along the guide post, at least the second sliding plate assembly remains closed.

[0007] When the second sliding plate assembly is opened in the state of being pushed out along the guide post, at least the first sliding plate assembly remains closed.

[0008] In this invention, the injection mold further includes a pull rod assembly corresponding to the slide plate assembly. The pull rod assembly includes a pull rod group comprising at least a first pull rod group and a second pull rod group. The first pull rod group and the second pull rod group are respectively associated with the first slide plate group and the second slide plate group.

[0009] In this invention, the first sliding plate group and the second sliding plate group open and close under the action of the first pull bar group and the second pull bar group, respectively, and the first pull bar group and the second pull bar group can slide relative to the second sliding plate group and the first sliding plate group, respectively.

[0010] In this invention, the injection mold further includes a slide groove assembly corresponding to the pull bar assembly. The slide groove assembly includes a slide groove plate assembly comprising at least a first slide groove plate assembly and a second slide groove plate assembly, wherein the first slide groove plate assembly and the second slide groove plate assembly are respectively associated with the first pull bar assembly and the second pull bar assembly.

[0011] In this invention, the pull bar assembly and the slide rail assembly have the following two modes of operation:

[0012] The first slide plate group guides the first pull bar group to generate lateral displacement, thereby driving the first slide plate group to open. The second pull bar group slides relative to the first slide plate group, and the second slide plate group guides the second pull bar group to remain in a closed state.

[0013] The second slide plate group guides the second pull bar group to generate lateral displacement, thereby driving the second slide plate group to open. The first pull bar group slides relative to the second slide plate group, and the first slide plate group guides the first pull bar group to remain in a closed state.

[0014] In this invention, there is a gap between the first and second sliding plate groups, which allows for displacement movement when the first or second sliding plate group is opened. The opening and closing actions of the first and second sliding plate groups located on both sides of the gap are opposite.

[0015] In this invention, the width of the gap is set to 1 to 2 times the displacement value on one side when the first or second sliding plate group is opened.

[0016] In this invention, the injection mold further includes a driving device, which drives the first slide plate group and the second slide plate group to move synchronously, so that the first slide plate group and the second slide plate group respectively guide the first pull bar group and the second pull bar group to switch between generating lateral displacement and maintaining a closed state.

[0017] In this invention, the working process of the injection mold is as follows:

[0018] S1, before the top plate is ejected for the first time: the drive device drives the slide rail assembly to slide synchronously along the X-axis direction, and slides to the curved track of the opening and closing slide rail of the first slide rail group and the roller of the first pull bar group, and the straight track of the straight slide rail of the second slide rail group and the roller of the second pull bar group.

[0019] S2, when the top plate ejects for the first time: the first pull bar group, guided by the first slide plate group, drives the two slide plates in the first slide plate group to move in opposite directions along the Y-axis, and the plastic product in the cavity of the first slide plate group is demolded; the second pull bar group, guided by the second slide plate group, drives the two slide plates in the second slide plate group to move in the same direction along the Z-axis at the same time, and maintains a relatively stationary state on the Y-axis, and the cavity in the second slide plate group remains closed.

[0020] S3, Top plate retraction for the first time: Under the guidance of the first slide plate group, the first pull rod group drives the two slide plates in the first slide plate group to move towards each other along the Y-axis, and the cavity in the first slide plate group returns to the mold-closed state; Under the guidance of the second slide plate group, the second pull rod group drives the two slide plates in the second slide plate group to move in the same direction along the Z-axis at the same time, and maintain a relatively stationary state on the Y-axis, and the cavity in the second slide plate group remains closed.

[0021] S4, before the top plate is ejected for the second time: the drive device drives the slide rail assembly to slide synchronously along the X-axis direction, and slides to the straight track of the straight slide rail plate of the first slide rail plate group and cooperates with the roller of the first pull bar group, and the curved track of the opening and closing slide rail plate of the second slide rail plate group cooperates with the roller of the second pull bar group.

[0022] S5, when the top plate ejects for the second time: the second pull rod group, guided by the second slide plate group, drives the two slide plates in the second slide plate group to move in opposite directions along the Y-axis, and the cavity in the second slide plate group returns to the mold-closing state; the first pull rod group, guided by the first slide plate group, drives the two slide plates in the first slide plate group to move in the same direction along the Z-axis at the same time, and maintains a relatively stationary state on the Y-axis, and the cavity in the first slide plate group remains closed;

[0023] S6, the top plate retracts for the second time. Under the guidance of the second slide plate group, the second pull rod group drives the two slide plates in the second slide plate group to move towards each other along the Y axis, and the plastic product in the cavity of the second slide plate group is demolded. Under the guidance of the first slide plate group, the first pull rod group drives the two slide plates in the first slide plate group to move in the same direction along the Z axis at the same time, and maintains a relatively stationary state on the Y axis, and the cavity in the first slide plate group remains closed.

[0024] Based on the above-described injection mold, the present invention also provides an injection molding machine system, including a top plate drive device, a valve needle control device, an extraction control device, and the above-described injection mold; the top plate drive device is used to drive the top plate to move; the valve needle control device is used to control the valve needle to move; and the extraction control device is used to control the extraction of the plastic product.

[0025] The beneficial effects of this invention are: the first and second sliding plate groups are set to two opposite opening and closing states; the plastic products injection molded in the injection mold are demolded in two separate processes, avoiding the problem that the first and second sliding plate groups need to open simultaneously during demolding, thus occupying space in the injection mold; the movement range between adjacent first and second sliding plate components during opening and closing can overlap, and with the overall size of the injection mold remaining unchanged, the saved space can be used to set more sliding plate components, allowing the injection mold to injection mold more molded products at one time; and with the same number of molded products injectiond at one time, the volume of the injection mold can be reduced, the weight of the injection mold can be reduced, and the material cost of the injection mold can be lowered. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the injection mold in the mold-closed state in this embodiment;

[0027] Figure 2 This is a schematic diagram of the first skateboard assembly in the mold-opening state in this embodiment;

[0028] Figure 3 This is a schematic diagram of the second slide plate assembly in the mold-opening state in this embodiment;

[0029] Figure 4 This is a schematic diagram of the installation structure of the pull strip assembly in this embodiment;

[0030] Figure 5 for Figure 2 Enlarged view of section A;

[0031] Figure 6 This is a schematic diagram of the opening and closing sliding plate in this embodiment;

[0032] Figure 7 This is a schematic diagram of the straight slide plate in this embodiment. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0034] Example:

[0035] like Figures 1 to 7 As shown, this embodiment discloses a preform injection mold, including a core plate 1, a top plate 2, and at least one slide assembly 3; the core plate 1 is provided with guide posts 11, and the top plate 2 is configured to be guided to move by the guide posts 11; the slide assembly 3 includes a slide group comprising at least a first slide group 31 and a second slide group 32, and is configured to have the following two opening and closing states:

[0036] When the first sliding plate assembly 31 is opened in the state of the top plate 2 moving out along the guide post 11, at least the second sliding plate assembly 32 remains closed;

[0037] When the second sliding plate assembly 32 is opened in the state of the top plate 2 moving out along the guide post 11, at least the first sliding plate assembly 31 remains closed.

[0038] In this embodiment, the injection mold further includes a pull rod assembly 4 corresponding to the slide plate assembly 3. The pull rod assembly 4 includes a pull rod group comprising at least a first pull rod group 41 and a second pull rod group 42. The first pull rod group 41 and the second pull rod group 42 are respectively associated with the first slide plate group 31 and the second slide plate group 32. Specifically, the first slide plate group 31 and the second slide plate group 32 open and close under the action of the first pull rod group 41 and the second pull rod group 42, respectively, and the first pull rod group 41 and the second pull rod group 42 can slide relative to the second slide plate group 32 and the first slide plate group 31, respectively.

[0039] In this embodiment, the injection mold further includes a slide rail assembly 5 corresponding to the pull bar assembly 4. The slide rail assembly 5 includes a slide rail plate group comprising at least a first slide rail plate group 51 and a second slide rail plate group 52. The first slide rail plate group 51 and the second slide rail plate group 52 are respectively associated with the first pull bar group 41 and the second pull bar group 42. Specifically, there are the following two modes of operation:

[0040] The first slide plate group 51 guides the first pull bar group 41 to generate lateral displacement, thereby driving the first slide plate group 31 to open. The second pull bar group 42 slides relative to the first slide plate group 31, and the second slide plate group 52 guides the second pull bar group 42 to remain in a closed state.

[0041] The second slide plate group 52 guides the second pull bar group 42 to generate lateral displacement, thereby driving the second slide plate group 32 to open. The first pull bar group 41 slides relative to the second slide plate group 32, and the first slide plate group 51 guides the first pull bar group 41 to remain in a closed state.

[0042] In specific implementation, the skateboard assembly 3 includes multiple first skateboard groups 31 and second skateboard groups 32, which are alternately arranged. When the first skateboard groups 31 and second skateboard groups 32 are long, two or more first pull bar groups 41 and second pull bar groups 42 are provided. Each first skateboard group 31 is associated with a first pull bar group 41, and each second skateboard group 32 is associated with a second pull bar group 42. The number of first slide plate groups 51 and second slide plate groups 52 corresponds to the number of first pull bar groups 41 and second pull bar groups 42, respectively. Usually, the number of first slide plate groups 51, second slide plate groups 52, first pull bar groups 41 and second pull bar groups 42 are equal.

[0043] In this embodiment, there is a gap 33 between the first slide group 31 and the second slide group 32. The gap 33 allows for displacement movement when the first slide group 31 or the second slide group is opened. The opening and closing actions of the first slide group 31 and the second slide group 32 located on both sides of the gap 33 are opposite, that is, the first slide group 31 and the second slide group 32 are controlled to open selectively, and will not open at the same time. Therefore, the width of the gap 33 only needs to be set to 1 to 2 times the displacement value on one side when the first slide group 31 or the second slide group 32 is opened.

[0044] In this embodiment, the injection mold also includes a driving device 6, which drives the first slide plate group 51 and the second slide plate group 52 to move synchronously, so that the first slide plate group 51 and the second slide plate group 52 respectively guide the first pull bar group 41 and the second pull bar group 42 to switch between generating lateral displacement and maintaining a closed state.

[0045] In this embodiment, the injection mold operates in the following two ways:

[0046] 1. Configure the slide rail assembly 5 so that the opening and closing slide rail plate 53 of the first slide rail plate group 51 cooperates with the roller 43 of the first pull bar group 41 corresponding to the first slide plate group 31, and the straight slide rail plate 54 of the second slide rail plate group 52 cooperates with the roller 43 of the second pull bar group 42 corresponding to the second slide plate group 32.

[0047] The second pull bar group 42 and the first slide plate group 31 are configured so that the second pull bar group 42 and the first slide plate group 31 can slide relative to each other;

[0048] The top plate 2 is pushed out, causing the rollers 43 of the first pull bar group 41 to move laterally under the guidance of the curved track 531 in the opening and closing slide plate 53, thereby causing the two first pull bars of the first pull bar group 41 to move laterally, and then the first pull bars drive the first slide plate group 31 to open; the rollers 43 of the second pull bar group 42 are guided by the straight track 541 in the straight slide plate 54 to maintain the lateral position of the second pull bar group 42, and the second slide plate group 32 remains in the closed state;

[0049] The top plate 2 retracts, causing the roller 43 of the first pull bar group 41 to move laterally under the guidance of the curved track 531 in the opening and closing slide plate 53, thereby causing the first pull bar to close the corresponding first slide plate group 31; the roller 43 of the second pull bar group 42 maintains the lateral position of the second pull bar group 42 under the guidance of the straight track 541 in the straight slide plate 54, and the second slide plate group 32 remains in the closed state.

[0050] 2. Configure the slide rail assembly 5 so that the opening and closing slide rail plate 53 of the second slide rail group cooperates with the roller 43 of the second pull bar group 42 corresponding to the second slide plate group 32, and the straight slide rail plate 54 of the first slide rail plate group 51 cooperates with the roller 43 of the first pull bar group 41 corresponding to the first slide plate group 31.

[0051] The first pull bar group 41 and the second slide plate group 32 are configured so that the first pull bar group 41 and the second slide plate group 32 can slide relative to each other;

[0052] The top plate 2 is pushed out, causing the rollers 43 of the second pull bar group 42 to move laterally under the guidance of the curved track 531 in the opening and closing slide plate 53, thereby causing the two second pull bars of the second pull bar group 42 to move laterally. In turn, the second pull bars drive the second slide plate group 32 to open; the rollers 43 of the first pull bar group 41 are guided by the straight track 541 in the straight slide plate 54 to maintain the lateral position of the first pull bar group 41, and the first slide plate group 31 remains in the closed state.

[0053] The top plate 2 retracts, causing the roller 43 of the second pull bar group 42 to move laterally under the guidance of the curved track 531 in the opening and closing slide plate 53, and then the second pull bar drives the corresponding second slide plate group 32 to close; the roller 43 of the first pull bar group 41 maintains the lateral position of the first pull bar group 41 under the guidance of the straight track 541 in the straight slide plate 54, and the first slide plate group 31 remains in the closed state.

[0054] The working process of the injection molding die is as follows:

[0055] S1, before the top plate 2 is ejected for the first time: the drive device 6 drives the slide rail assembly 5 to slide synchronously along the X-axis direction, and slides until the curved track 531 of the opening and closing slide rail plate 53 of the first slide rail plate group 51 cooperates with the roller 43 of the first pull bar group 41, and the straight track 541 of the straight slide rail plate 54 of the second slide rail plate group 52 cooperates with the roller 43 of the second pull bar group 42.

[0056] S2, when the top plate 2 ejects for the first time: the first pull rod group 41, guided by the first slide plate group 51, drives the two slide plates in the first slide plate group 31 to move in opposite directions along the Y-axis, and the plastic product in the cavity of the first slide plate group 31 is demolded; the second pull rod group 42, guided by the second slide plate group 52, drives the two slide plates in the second slide plate group 32 to move in the same direction along the Z-axis at the same time, and maintains a relatively stationary state on the Y-axis, and the cavity in the second slide plate group 32 remains closed;

[0057] S3, Top plate 2 retracts for the first time: Under the guidance of the first slide plate group 51, the first pull rod group 41 drives the two slide plates in the first slide plate group 31 to move towards each other along the Y-axis, and the cavity in the first slide plate group 31 returns to the mold-closed state; Under the guidance of the second slide plate group 52, the second pull rod group 42 drives the two slide plates in the second slide plate group 32 to move in the same direction along the Z-axis at the same time, and maintain a relatively stationary state on the Y-axis, and the cavity in the second slide plate group 32 remains closed;

[0058] S4, before the top plate 2 is ejected for the second time: the drive device 6 drives the slide rail assembly 5 to slide synchronously along the X-axis direction, and slides to the straight track 541 of the straight slide rail plate 54 of the first slide rail plate group 51 and the roller 43 of the first pull bar group 41, and the curved track 531 of the opening and closing slide rail plate 53 of the second slide rail plate group 52 and the roller 43 of the second pull bar group 42.

[0059] S5, when the top plate 2 ejects for the second time: the second pull rod group 42, guided by the second slide plate group 52, drives the two slide plates in the second slide plate group 32 to move in opposite directions along the Y-axis, and the cavity in the second slide plate group 32 returns to the mold-closing state; the first pull rod group 41, guided by the first slide plate group 51, drives the two slide plates in the first slide plate group 31 to move in the same direction along the Z-axis at the same time, and maintains a relatively stationary state on the Y-axis, and the cavity in the first slide plate group 31 remains closed;

[0060] S6, the top plate 2 retracts for the second time. Under the guidance of the second slide plate group 52, the second pull strip group 42 drives the two slide plates in the second slide plate group 32 to move towards each other along the Y axis, and the plastic product in the cavity of the second slide plate group 32 is demolded. Under the guidance of the first slide plate group 51, the first pull strip group 41 drives the two slide plates in the first slide plate group 31 to move in the same direction along the Z axis at the same time, and maintains a relatively stationary state on the Y axis, and the cavity in the first slide plate group 31 remains closed.

[0061] The above describes the working process of one cycle of a preform injection mold. After completing one cycle, the next cycle begins.

[0062] Based on the injection mold disclosed in the above embodiments, this embodiment also discloses an injection molding machine system, including a top plate 2 driving device 6, a valve needle control device, an extraction control device, and the aforementioned injection mold; the top plate 2 driving device 6 is used to drive the top plate 2 to move; the valve needle control device is used to control the valve needle to move; and the extraction control device is used to control the extraction of the plastic product. The top plate 2 driving device 6, the valve needle control device, and the extraction control device adopt existing technology solutions, which will not be described in detail here. They are configured to achieve the following injection molding method:

[0063] Depending on the application of the injection mold, the injection molding machine system executes different injection methods:

[0064] B1, when only the molding cavity corresponding to the first slide block 31 is used in the injection mold, the valve needle control device controls the valve needle of the corresponding molding cavity in the hot runner to open, and the other valve needles to close. The injection mold closes and injects molten plastic into the molding cavity. The molten plastic only enters the corresponding molding cavity and is molded into a plastic product in the molding cavity.

[0065] The top plate 2 driving device 6 drives the top plate 2 to be pushed out, which, after being configured, causes the first sliding plate group 31 to open and the second sliding plate group 32 to remain closed, and the plastic product corresponding to the first sliding plate group 31 is separated from the first mold core.

[0066] The removal control device controls the removal plate to move to the removal position. The removal plate removes the demolded plastic product from the first slide block 31. The removal plate leaves the removal position, and the pickup plate picks up and releases the plastic product from the removal plate.

[0067] The top plate 2 is driven by the drive device 6 to retract, thereby closing the first slide block group 31 and the second slide block group 32. The molding machine system then completes one automatic injection molding operation.

[0068] B2, When all the molding cavities in the injection mold are molding the same plastic product, the valve needle control device controls the valve needles corresponding to all molding cavities in the hot runner to open, the preform mold closes, and molten plastic is injected into the molding cavity. The molten plastic enters all the molding cavities of the preform mold and is molded into a plastic product in the molding cavity.

[0069] The top plate 2 driving device 6 drives the top plate 2 to be pushed out, which, after being configured, causes the first sliding plate group 31 to open and the second sliding plate group 32 to remain closed, and the plastic product corresponding to the first sliding plate group 31 is separated from the first mold core.

[0070] The removal control device controls the removal plate to move to the removal position, and the removal plate removes the demolded plastic product from the first slide group 31.

[0071] The top plate 2 drive device 6 drives the top plate 2 to retract, and the configuration makes the first sliding plate group 31 and the second sliding plate group 32 in a closed state;

[0072] The top plate 2 driving device 6 drives the top plate 2 to be pushed out again, which, after being configured, causes the second sliding plate group 32 to open, while the first sliding plate group 31 remains closed, and the plastic product corresponding to the second sliding plate group 32 is removed from the second mold core.

[0073] The removal control device controls the removal plate to move to the removal position, and the removal plate removes the demolded plastic product from the second slide block group 32;

[0074] The take-out plate leaves the take-out position, and the pickup plate picks up and releases the plastic product from the take-out plate.

[0075] The top plate 2 drive device 6 drives the top plate 2 to retract again, which, after configuration, puts the first slide block group 31 and the second slide block group 32 into a closed state. The instant molding machine system completes one automatic injection molding operation.

[0076] B3, when two different plastic products are being molded simultaneously in the injection mold, the valve needle control device controls the valve needles corresponding to all molding cavities in the hot runner to open, the injection mold closes, and molten plastic is injected into the molding cavity. The molten plastic enters all molding cavities of the injection mold and is molded into plastic products within the molding cavity.

[0077] The top plate 2 driving device 6 drives the top plate 2 to be pushed out, which, after being configured, causes the first sliding plate group 31 to open and the second sliding plate group 32 to remain closed, and the plastic product corresponding to the first sliding plate group 31 is separated from the first mold core.

[0078] The removal control device controls the removal plate to move to the removal position, and the removal plate removes the demolded plastic product from the first slide group 31.

[0079] The top plate 2 drive device 6 drives the top plate 2 to retract, and the configuration makes the first sliding plate group 31 and the second sliding plate group 32 in a closed state;

[0080] The top plate 2 driving device 6 drives the top plate 2 to be pushed out again, which, after being configured, causes the second sliding plate group 32 to open, while the first sliding plate group 31 remains closed, and the plastic product corresponding to the second sliding plate group 32 is removed from the second mold core.

[0081] The removal control device controls the removal plate to move to the removal position, and the removal plate removes the demolded plastic product from the second slide block group 32;

[0082] The take-out plate leaves the take-out position, and the pickup plate picks up the plastic product from the take-out plate;

[0083] The pickup plate releases a plastic product formed in the molding cavity of the first slide group 31 at one position and a plastic product formed in the molding cavity of the second slide group 32 at another position; or the pickup plate first releases a plastic product formed in the molding cavity of the first slide group 31 and then releases a plastic product formed in the molding cavity of the second slide group 32.

[0084] The top plate 2 drive device 6 drives the top plate 2 to retract again, which, after configuration, puts the first slide block group 31 and the second slide block group 32 into a closed state. The instant molding machine system completes one automatic injection molding operation.

[0085] The above description is only a preferred embodiment of the present invention. Any technical solution that achieves the purpose of the present invention by essentially the same means is within the protection scope of the present invention.

Claims

1. A casting mold, characterized in that: The system includes a core plate, a top plate, and at least one sliding plate assembly; the core plate is provided with guide posts, and the top plate is configured to be guided to move by the guide posts; the sliding plate assembly includes a sliding plate group comprising at least a first sliding plate group and a second sliding plate group, and is configured to have the following two open / closed states: When the first sliding plate assembly is opened in the state of being pushed out along the guide post, at least the second sliding plate assembly remains closed. When the second sliding plate assembly is opened in the state of being pushed out along the guide post, at least the first sliding plate assembly remains closed; The injection mold also includes a pull rod assembly corresponding to the slide plate assembly. The pull rod assembly includes a pull rod group that includes at least a first pull rod group and a second pull rod group. The first pull rod group and the second pull rod group are respectively associated with the first slide plate group and the second slide plate group. The injection mold also includes a slide rail assembly corresponding to the pull bar assembly. The slide rail assembly includes a slide rail plate assembly that includes at least a first slide rail plate assembly and a second slide rail plate assembly. The first slide rail plate assembly and the second slide rail plate assembly are respectively associated with the first pull bar assembly and the second pull bar assembly. The injection mold also includes a drive device, and the working process of the injection mold is as follows: S1, before the top plate is ejected for the first time: the drive device drives the slide rail assembly to slide synchronously along the X-axis direction, and slides to the curved track of the opening and closing slide rail of the first slide rail group and the roller of the first pull bar group, and the straight track of the straight slide rail of the second slide rail group and the roller of the second pull bar group. S2, when the top plate ejects for the first time: the first pull bar group, guided by the first slide plate group, drives the two slide plates in the first slide plate group to move in opposite directions along the Y-axis, and the plastic product in the cavity of the first slide plate group is demolded; the second pull bar group, guided by the second slide plate group, drives the two slide plates in the second slide plate group to move in the same direction along the Z-axis at the same time, and maintains a relatively stationary state on the Y-axis, and the cavity in the second slide plate group remains closed. S3, Top plate retraction for the first time: Under the guidance of the first slide plate group, the first pull rod group drives the two slide plates in the first slide plate group to move towards each other along the Y-axis, and the cavity in the first slide plate group returns to the mold-closed state; Under the guidance of the second slide plate group, the second pull rod group drives the two slide plates in the second slide plate group to move in the same direction along the Z-axis at the same time, and maintain a relatively stationary state on the Y-axis, and the cavity in the second slide plate group remains closed. S4, before the top plate is ejected for the second time: the drive device drives the slide rail assembly to slide synchronously along the X-axis direction, and slides to the straight track of the straight slide rail plate of the first slide rail plate group and cooperates with the roller of the first pull bar group, and the curved track of the opening and closing slide rail plate of the second slide rail plate group cooperates with the roller of the second pull bar group. S5, when the top plate ejects for the second time: the second pull rod group, guided by the second slide plate group, drives the two slide plates in the second slide plate group to move in opposite directions along the Y-axis, and the plastic product in the cavity of the second slide plate group is demolded; the first pull rod group, guided by the first slide plate group, drives the two slide plates in the first slide plate group to move in the same direction along the Z-axis at the same time, and maintains a relatively stationary state on the Y-axis, and the cavity in the first slide plate group remains closed; S6, the top plate retracts for the second time. Under the guidance of the second slide plate group, the second pull rod group drives the two slide plates in the second slide plate group to move towards each other along the Y axis, and the cavity in the second slide plate group returns to the mold-closing state. Under the guidance of the first slide plate group, the first pull rod group drives the two slide plates in the first slide plate group to move in the same direction along the Z axis at the same time, and maintains a relatively stationary state on the Y axis. The cavity in the first slide plate group remains closed.

2. The injection mold according to claim 1, characterized in that: The first and second skateboard groups open and close under the action of the first and second pull strip groups, respectively, and the first and second pull strip groups can slide relative to the second and first skateboard groups, respectively.

3. The injection mold according to claim 1, characterized in that: The pull bar assembly and the slide rail assembly have the following two modes of operation: The first slide plate group guides the first pull bar group to generate lateral displacement, thereby driving the first slide plate group to open. The second pull bar group slides relative to the first slide plate group. The second slide plate group guides the second pull bar group to remain in a closed state. The second slide plate group guides the second pull bar group to generate lateral displacement, thereby driving the second slide plate group to open. The first pull bar group slides relative to the second slide plate group, and the first slide plate group guides the first pull bar group to remain in a closed state.

4. The injection mold according to claim 1, characterized in that: There is a gap between the first and second sliding plate groups, which allows for displacement movement when the first or second sliding plate group is opened. The opening and closing actions of the first and second sliding plate groups located on both sides of the gap are opposite.

5. The injection mold according to claim 4, characterized in that: The width of the gap is set to 1 to 2 times the displacement value on one side when the first or second sliding plate group is opened.

6. The injection mold according to claim 1, characterized in that: The driving device drives the first slide plate group and the second slide plate group to move synchronously, so that the first slide plate group and the second slide plate group respectively guide the first tie rod group and the second tie rod group to switch between generating lateral displacement and maintaining a closed state.

7. An injection molding machine, characterized in that: The invention includes a top plate drive device, a valve needle control device, an extraction control device, and a preform mold as described in any one of claims 1-6; the top plate drive device is used to drive the top plate to move; the valve needle control device is used to control the valve needle to move; and the extraction control device is used to control the extraction of the plastic product.

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