A core mold for molding a multi-cavity plastic product

Abstract

The utility model provides a kind of core mould of multiple cavity plastic product forming, it is related to mould technical field, comprising: mould frame;The mould frame is fixed on workbench, base block is slid on mould frame, and upper mould is fixed in base block bottom end surface, first hydraulic cylinder is fixed on mould frame, and the extension end of first hydraulic cylinder is fixed on base block upper end surface, lower mould is fixed on mould frame, and core mould is fixed in lower mould, and two fixed screw rods for the fixing of core mould are threadedly connected on lower mould.This application realizes the convenient replacement of core mould by fixed screw rod, replaces upper mould, satisfies the processing needs of different kinds of plastic products;The manual operation of emergency part is matched with the hydraulic drive of demoulding part, to ensure that demolding process is stable and reliable, avoid equipment failure to cause production stagnation;The active vibration of vibrator is combined with the elastic clamping vibration of auxiliary part, significantly improves demolding efficiency, solves the problems of poor applicability, single demolding mode and low efficiency of existing mould.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, and more specifically, it relates to a core mold for molding multi-cavity plastic products. Background Technology

[0002] In the molding and processing of plastic products, the core mold is one of the key pieces of equipment, and its performance directly affects product quality and production efficiency.

[0003] Existing core molds have many shortcomings: First, they have poor applicability, with complex core mold fixing structures that are inconvenient to replace and difficult to quickly adapt to the processing needs of different types of plastic products; second, they have a single demolding method that relies heavily on hydraulic drive, which means that demolding cannot be completed in time when the hydraulic system fails, leading to production stoppage; and third, they have low demolding efficiency and lack effective auxiliary demolding structures, making it easy for products to stick to the mold and affecting production progress. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a core mold for molding multi-cavity plastic products, thereby solving the problems of poor applicability, limited demolding methods, and low efficiency of existing molds.

[0005] The purpose and function of this utility model for a core mold for molding multi-cavity plastic products are achieved by the following specific technical means:

[0006] A core mold for molding multi-cavity plastic products includes a mold frame; the mold frame is fixed on a worktable, a base block slides on the mold frame, an upper mold is fixed on the bottom end face of the base block, a first hydraulic cylinder is fixed on the mold frame, the extended end of the first hydraulic cylinder is fixed on the upper end face of the base block, a lower mold is fixed on the mold frame, a core mold is fixed inside the lower mold, and two fixing screws for fixing the core mold are threadedly connected to the lower mold.

[0007] Furthermore, a demolding rod slides on the core mold and the lower mold, and a second hydraulic cylinder is fixed at one end of the demolding rod. The bottom end face of the second hydraulic cylinder contacts the mold frame, and the second hydraulic cylinder and the demolding rod together form the demolding part.

[0008] Furthermore, the mold frame is provided with an emergency unit, which consists of a sliding groove, an extrusion block and a handle. The mold frame has a sliding groove on which the extrusion block slides.

[0009] Furthermore, the extrusion block is aligned with the second hydraulic cylinder, the extrusion block has an isosceles trapezoidal structure, and a handle is welded onto the extrusion block.

[0010] Furthermore, an auxiliary part is installed on the lower mold, which consists of protrusions, mounting arms, and contact rods. Protrusions are welded at equal intervals on the left and right end faces of the lower mold, and the protrusions are semi-cylindrical structures. Two mounting arms are welded on the left and right end faces of the base block, and all four mounting arms are L-shaped structures. A contact rod is welded on each mounting arm. One inner end of each of the four contact rods contacts the left and right end faces of the base block, respectively. The contact rods are aligned with the protrusions. When the base block moves up and down, the contact rods and protrusions are in a continuous elastic engagement state.

[0011] Furthermore, the upper end face of the lower mold has two symmetrical mounting slots, each of which contains a vibrator, and both vibrators are electrically connected to an external power supply.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This application enables quick assembly and disassembly of the core mold through a threaded fixing screw, which, combined with the flexible replacement of the mold, greatly improves the mold's adaptability to different types of plastic products, reduces equipment replacement costs, and increases production flexibility.

[0014] This application innovatively sets up a dual demolding structure that combines a hydraulically driven demolding section with a manually operated emergency section. The hydraulic demolding ensures efficient and stable production during normal operations, while the emergency section achieves manual demolding through an isosceles trapezoidal extrusion block, effectively responding to hydraulic system failures, avoiding production interruptions, and improving equipment operational reliability.

[0015] The semi-cylindrical protrusion of the auxiliary part of this application forms a continuous elastic engagement with the contact rod on the L-shaped mounting arm. When the base block moves, it vibrates and works in conjunction with the vibrator in the mounting groove to actively vibrate. The dual vibration effect effectively reduces the adhesion between the product and the mold, significantly improves the demolding efficiency, and ensures the production schedule. Attached Figure Description

[0016] Figure 1 This is a perspective view of the core mold for molding multi-cavity plastic products according to this utility model.

[0017] Figure 2 This is a front view of the core mold for molding multi-cavity plastic products according to this utility model.

[0018] Figure 3 This is a left view of the core mold for molding multi-cavity plastic products according to this utility model.

[0019] Figure 4 This is a three-dimensional view of a partially cut-open core mold for molding multi-cavity plastic products according to this utility model.

[0020] Figure 5 This is a utility model Figure 4 Enlarged view of point A.

[0021] Figure 6 This is a three-dimensional schematic diagram of the extrusion block and grip of this utility model.

[0022] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0023] 1. Mold frame; 101. Lower mold; 102. Base block; 103. Upper mold; 104. First hydraulic cylinder; 105. Core mold; 106. Fixing screw; 107. Mounting groove; 108. Vibrator; 2. Demolding section; 201. Second hydraulic cylinder; 202. Demolding rod; 3. Emergency section; 301. Sliding groove; 302. Extrusion block; 303. Handle; 4. Auxiliary section; 401. Protrusion; 402. Mounting arm; 403. Contact rod. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The use of terms such as "a," "an," or "the" in this utility model patent application specification and claims does not indicate a quantity limitation, but rather indicates the presence of at least one. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0026] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0027] Example 1: As shown in the attached document Figure 1 To be continued Figure 6 As shown:

[0028] This utility model provides a core mold for molding multi-cavity plastic products, including a mold frame 1; the mold frame 1 is fixed on a worktable, a base block 102 slides on the mold frame 1, an upper mold 103 is fixed on the bottom surface of the base block 102, a first hydraulic cylinder 104 is fixed on the mold frame 1, the extended end of the first hydraulic cylinder 104 is fixed on the upper surface of the base block 102, a lower mold 101 is fixed on the mold frame 1, a core mold 105 is fixed inside the lower mold 101, and two fixing screws 106 for fixing the core mold 105 are threadedly connected to the lower mold 101. When processing different parts, the two fixing screws 106 are loosened to remove the core mold 105 for replacement, and then the upper mold 103 is replaced, which facilitates the processing of different types of plastic products.

[0029] Among them, a demolding rod 202 slides on the core mold 105 and the lower mold 101. A second hydraulic cylinder 201 is fixed at one end of the demolding rod 202. The bottom end face of the second hydraulic cylinder 201 contacts the mold frame 1. The second hydraulic cylinder 201 and the demolding rod 202 together form the demolding part 2. During demolding, the second hydraulic cylinder 201 is driven to extend, and the second hydraulic cylinder 201 drives the demolding rod 202 to move upward to complete the demolding action.

[0030] The mold frame 1 is equipped with an emergency unit 3, which consists of a sliding groove 301, an extrusion block 302 and a handle 303. The mold frame 1 has a sliding groove 301, and the extrusion block 302 slides on the sliding groove 301.

[0031] The extrusion block 302 is aligned with the second hydraulic cylinder 201. The extrusion block 302 has an isosceles trapezoidal structure and a handle 303 is welded onto it. When performing emergency demolding, the user holds the handle 303 and pulls it forward. Under the extrusion action of the extrusion block 302, the second hydraulic cylinder 201 and the demolding rod 202 are pushed upward, thus achieving manual emergency demolding.

[0032] The lower mold 101 is equipped with an auxiliary part 4, which consists of a protrusion 401, a mounting arm 402, and a contact rod 403. The left and right end faces of the lower mold 101 are equidistantly welded with protrusions 401, which are semi-cylindrical structures. The left and right end faces of the base block 102 are each welded with two mounting arms 402, which are all L-shaped structures. Each mounting arm 402 is welded with a contact rod 403. The inner end of the four contact rods 403 contacts the left and right end faces of the base block 102, respectively. The contact rods 403 are aligned with the protrusions 401. When the base block 102 moves up and down, the contact rods 403 and the protrusions 401 are in a continuous elastic engagement state. Through the continuous elastic engagement between the contact rods 403 and the protrusions 401, vibration can be generated, which can help with demolding.

[0033] Example 2: Based on Example 1, two mounting slots 107 are symmetrically opened on the upper end face of the lower mold 101. A vibrator 108 is fixed in each mounting slot 107. Both vibrators 108 are electrically connected to an external power supply. When vibration demolding is achieved, the power supply of the two vibrators 108 is turned on, and the vibration generated by the vibrators 108 can achieve demolding assistance.

[0034] Working principle: In use, first fix the mold frame 1 on the worktable. According to the specifications of the plastic product to be processed, install the appropriate core mold 105 through the fixing screw 106 and replace the corresponding upper mold 103. Start the first hydraulic cylinder 104, which drives the base block 102 and the upper mold 103 to move downward and close with the lower mold 101 to complete the injection molding operation. After molding, demolding operation is performed: Under normal conditions, drive the second hydraulic cylinder 201 to extend, drive the demolding rod 202 to move upward and push out the product. If the hydraulic system malfunctions, hold the handle 303 and pull the extrusion block 302 forward. Use its isosceles trapezoidal structure to extrude the second hydraulic cylinder 201, which indirectly pushes the demolding rod 202 to achieve emergency demolding. During the demolding process, when the base block 102 moves up and down, the contact rod 403 on the mounting arm 402 and the semi-cylindrical protrusion 401 on the lower mold 101 form a continuous elastic engagement, generating vibration to assist demolding. At the same time, the power supply of the vibrator 108 can be turned on to further improve the demolding efficiency through active vibration and avoid product sticking.

[0035] Although this application has been described with reference to the foregoing embodiments, those skilled in the art will understand that various changes can be made without departing from the spirit and scope of this application as defined by the appended claims. While this specification contains details of many specific implementations, these should not be construed as limiting the scope of the claims, but rather as descriptions of features specific to particular embodiments. The scope of this application is defined by the appended claims and their equivalents, and is not limited to the embodiments described above.

Claims

1. A core mold for molding multi-cavity plastic products, characterized in that: The system includes a mold frame (1); the mold frame (1) is fixed on a workbench, a base block (102) slides on the mold frame (1), an upper mold (103) is fixed on the bottom surface of the base block (102), a first hydraulic cylinder (104) is fixed on the mold frame (1), the extended end of the first hydraulic cylinder (104) is fixed on the upper surface of the base block (102), a lower mold (101) is fixed on the mold frame (1), a core mold (105) is fixed inside the lower mold (101), and two fixing screws (106) for fixing the core mold (105) are threadedly connected to the lower mold (101).

2. The core mold for molding multi-cavity plastic products as described in claim 1, characterized in that: A demolding rod (202) slides on the core mold (105) and the lower mold (101). A second hydraulic cylinder (201) is fixed at one end of the demolding rod (202). The bottom end face of the second hydraulic cylinder (201) contacts the mold frame (1). The second hydraulic cylinder (201) and the demolding rod (202) together form the demolding part (2).

3. The core mold for molding multi-cavity plastic products as described in claim 2, characterized in that: The mold frame (1) is provided with an emergency section (3), which consists of a sliding groove (301), an extrusion block (302) and a handle (303). The mold frame (1) has a sliding groove (301) and the extrusion block (302) slides on the sliding groove (301).

4. The core mold for molding multi-cavity plastic products as described in claim 3, characterized in that: The extrusion block (302) is aligned with the second hydraulic cylinder (201). The extrusion block (302) has an isosceles trapezoidal structure and a handle (303) is welded onto the extrusion block (302).

5. The core mold for molding multi-cavity plastic products as described in claim 4, characterized in that: The lower mold (101) is equipped with an auxiliary part (4), which consists of a protrusion (401), a mounting arm (402), and a contact rod (403). The left and right end faces of the lower mold (101) are welded with protrusions (401) at equal intervals. The protrusions (401) are semi-cylindrical structures. The left and right end faces of the base block (102) are welded with two mounting arms (402). The four mounting arms (402) are all L-shaped structures. Each mounting arm (402) is welded with a contact rod (403). The inner end of the four contact rods (403) is in contact with the left and right end faces of the base block (102) respectively. The contact rods (403) are aligned with the protrusions (401). When the base block (102) moves up and down, the contact rods (403) and the protrusions (401) are in a continuous elastic engagement state.

6. The core mold for molding multi-cavity plastic products as described in claim 5, characterized in that: The lower mold (101) has two symmetrical mounting slots (107) on its upper end face. Each mounting slot (107) has a vibrator (108) fixed in it. Both vibrators (108) are electrically connected to an external power supply.

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