Water gap self-breaking type mold

Abstract

The utility model relates to the technical field of mold production, and discloses a water gap self-breaking type mold which comprises an upper mold base and a lower mold base. An upper mold core is arranged in the upper mold base; a lower mold core is arranged in the lower mold base, and the lower mold core and the upper mold core can be buckled with each other; a middle ejection block for ejecting materials is arranged in the lower mold core; the upper mold core, the lower mold core and the middle ejector block are combined to form a runner and two groups of forming cavities distributed left and right, and the runner is communicated with the two groups of forming cavities; a glue inlet channel is arranged between the runner and the forming cavity; and a breaking part extending outwards is arranged at one end, close to the forming cavity, of the glue inlet channel. Through the arrangement of the rubber inlet channel and the breaking part, when the mold is opened, the middle ejection block is ejected before the runner, the middle ejection block drives a product to move upwards and automatically breaks the breaking part of the rubber inlet channel, so that the product is separated from plastic materials in the runner and the rubber inlet channel, automatic water gap breaking is realized, the manual operation cost is reduced, the production quality of the product is improved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mold production, in particular to a water inlet self-breaking mold. Background Art

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. At a certain temperature, the completely molten plastic material is stirred by a screw and injected into the mold cavity with high pressure. After cooling and solidification, the molded product can be obtained.

[0003] At present, in the design of injection molding molds, the side gate, which has a simple shape and is easy to process, is the most widely used injection molding method. That is, the molten plastic material is injected into the mold cavity of the mold through an injection molding device connected to the injection port on the side of the upper mold core of the mold, and the upper mold core of the mold is driven to move, so that the molded product is demolded from the upper mold core and the lower mold core of the mold, and the molded product can be taken out.

[0004] After molding, the side wall of the product adheres to the molten plastic material at the connection between the injection molding device and the injection port, and the connection between the two forms a sprue, which is usually sheared by manual shearing to obtain the product. However, manual shearing of the molded product is inefficient, time-consuming and labor-intensive, and increases the fatigue intensity of the staff. In addition, the manual cutting error is large, which can easily damage the surface of the product and affect the quality of the product.

[0005] Therefore, a water nozzle self-breaking type mold is urgently needed to solve the above problems. Utility Model Content

[0006] Based on the above, the purpose of the utility model is to provide a self-breaking sprue mold to solve the problem that manual cutting of the product after molding is inefficient, time-consuming and labor-intensive, and has large manual cutting errors and is easy to damage the surface of the product.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A water inlet self-breaking mold, comprising an upper mold base and a lower mold base; an upper mold core is arranged in the upper mold base; a lower mold core is arranged in the lower mold base, and the lower mold core and the upper mold core can be buckled with each other; a middle ejector block for ejecting material is arranged in the lower mold core;

[0009] The upper mold core, the lower mold core and the middle top block are combined to form a flow channel and two groups of left and right distributed molding cavities, the flow channel is connected with the two groups of molding cavities; a glue inlet channel is provided between the flow channel and the molding cavities; the glue inlet channel is provided with a breaking portion extending outward near one end of the molding cavity.

[0010] As a preferred solution for a water inlet self-breaking mold, the glue inlet channel is provided with a glue inlet and a glue outlet; the glue inlet is arranged between the glue inlet channel and the flow channel; the glue outlet is arranged between the glue inlet channel and the breaking portion.

[0011] As a preferred solution of the self-breaking sprue mold, the outer diameter of the glue inlet is greater than the outer diameter of the glue outlet; and the outer diameter of the breaking portion is equal to the outer diameter of the glue outlet.

[0012] As a preferred solution of a water inlet self-breaking mold, the flow channel includes a main flow channel and two groups of flow channels; the two groups of branch flow channels are arranged on both sides of the main flow channel; and the branch flow channels are connected to the glue inlet channel.

[0013] As a preferred solution for the self-breaking sprue mold, two groups of push rods for lifting the middle top block are fixedly connected to the middle top block; the two groups of push rods are distributed on the left and right sides of the bottom end of the middle top block.

[0014] As a preferred solution for the water inlet self-breaking mold, two groups of guide rods are provided on the lower mold core; the two groups of guide rods pass through the two ends of the middle top block and extend into the upper mold core.

[0015] As a preferred solution for a water gate self-breaking mold, the two groups of guide rods are relatively arranged at the bottom end of the lower mold core and are located outside the two groups of ejector rods.

[0016] As a preferred solution for a self-breaking sprue mold, both ends of the middle top block are provided with outwardly extending protrusions; the protrusions are respectively provided with a first groove and a second groove between the upper mold core and the lower mold core, and the first groove and the second groove form an installation cavity for placing the protrusion; the middle top block is provided with two groups of forming parts distributed on the left and right.

[0017] As a preferred solution for a self-breaking water inlet mold, the upper mold base includes a top plate, a runner plate and an upper mold plate; the runner plate is arranged at the bottom end of the top plate; the upper mold plate is arranged at the bottom end of the runner plate; and the center of the upper mold plate is connected to the upper mold core.

[0018] As a preferred solution for a self-breaking water gate mold, the lower mold base includes a bottom plate and a lower mold plate; the bottom plate is arranged at the bottom end of the lower mold plate; the lower mold plate is arranged at the bottom end of the upper mold plate and is connected to the lower mold core; when the mold is closed, the upper mold plate conflicts with the lower mold plate.

[0019] The beneficial effects of the utility model are:

[0020] By setting the glue inlet channel and the breaking part, when opening the mold, the middle top block is lifted up before the runner, and the middle top block drives the product to move upward and automatically breaks the breaking part of the glue inlet channel, so that the product is separated from the runner and the plastic material in the glue inlet channel, realizing automatic water cut-off, reducing manual labor costs, improving product production quality, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the overall structure of a water nozzle self-breaking type mold provided by the utility model;

[0022] Figure 2 A schematic diagram of the overall structure of the upper die core and the lower die core provided by the utility model;

[0023] Figure 3 A schematic diagram of the overall structure of the lower mold core provided by the utility model;

[0024] Figure 4 A schematic diagram of the overall structure of the middle top block provided by the utility model;

[0025] Figure 5 This is a schematic diagram of the overall structure of the flow channel and the glue inlet channel provided by the utility model;

[0026] Figure 6 for Figure 5 A is an enlarged schematic diagram.

[0027] Among them, the reference numerals in the figure are:

[0028] 10. Upper die seat; 11. Upper die core; 12. Top plate; 13. Runner plate; 14. Upper mold plate; 20. Lower die seat; 21. Lower die core; 22. Guide rod; 23. Bottom plate; 24. Lower mold plate; 30. Middle top block; 31. Top rod; 32. Raised portion; 33. Mounting cavity; 34. Molding portion; 40. Runner; 401. Main runner; 402. Branch runner; 41. Glue inlet; 42. Breaking portion. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0032] In the description of this embodiment, terms such as "up", "down", "left", and "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present utility model.

[0033] In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more than two. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0034] In one embodiment of the present invention, Figure 1-6 As shown, a water inlet self-breaking type mold is provided, comprising an upper mold base 10 and a lower mold base 20. An upper mold core 11 is arranged in the upper mold base 10. A lower mold core 21 is arranged in the lower mold base 20, and the lower mold core 21 and the upper mold core 11 can be buckled with each other. A middle ejector block 30 for ejecting material is arranged in the lower mold core 21.

[0035] The upper mold core 11, the lower mold core 21 and the middle top block 30 are combined to form a flow channel 40 and two groups of molding cavities distributed on the left and right. The flow channel 40 is connected to the two groups of molding cavities. A glue inlet channel 41 is provided between the flow channel 40 and the molding cavity. A breaking portion 42 extending outward is provided near one end of the molding cavity.

[0036] In this embodiment, an ejector pin is provided at the bottom end of the flow channel 40. When the mold is opened, the middle ejector block 30 is lifted up by the ejector rod 31 in the lower mold base 20 before the flow channel 40, so that the middle ejector block 30 drives the product to move upward and automatically breaks the broken portion 42 of the glue inlet channel 41, and then the plastic material in the flow channel 40 is lifted up by the ejector pin.

[0037] By providing the glue inlet channel 41 and the breaking portion 42, when the mold is opened, the middle top block 30 is lifted up before the flow channel 40, and the middle top block 30 drives the product to move upward and automatically breaks the breaking portion 42 of the glue inlet channel 41, so that the product is separated from the plastic material in the flow channel 40 and the glue inlet channel 41, realizing automatic water cut-off, reducing manual operation costs, improving product production quality, and improving production efficiency.

[0038] Preferably, a glue inlet and a glue outlet are provided on the glue inlet channel 41. The glue inlet is provided between the glue inlet channel 41 and the flow channel 40. The glue outlet is provided between the glue inlet channel 41 and the breaking portion 42. When the mold is closed, the plastic melt is injected into the flow channel 40, enters the glue inlet channel 41 from the glue inlet along the flow channel 40, enters the breaking portion 42 from the glue outlet, and finally flows into the molding cavity through the breaking portion 42, and the product is obtained by injection molding after solidification.

[0039] Furthermore, the outer diameter of the glue inlet is greater than the outer diameter of the glue outlet. The outer diameter of the breaking portion 42 is equal to the outer diameter of the glue outlet. In this embodiment, the glue inlet channel 41 is a conical structure, so that the plastic melt can flow into the molding cavity better, and the breaking portion 42 is a cylinder with the same outer diameter as the glue outlet, which is convenient for breaking the molded product and the plastic material when opening the mold.

[0040] Preferably, the flow channel 40 includes a main flow channel 401 and two groups of flow channels 402. The two groups of flow channels 402 are relatively arranged on both sides of the main flow channel 401. The branch flow channel 402 is connected to the glue inlet channel 41. By providing the branch flow channel 402, the production of one mold with multiple cavities is realized, the production time is shortened, and the work efficiency is improved.

[0041] Preferably, two groups of push rods 31 for lifting the middle top block 30 are fixedly connected to the middle top block 30, and a spring is sleeved on the outer side of the push rods 31, and the spring is located between the lower mold plate 24 and the bottom plate 23 of the lower mold base 20. The two groups of push rods 31 are distributed on the left and right sides of the bottom end of the middle top block 30. When the mold is opened, the push rods 31 lift the middle top block 30 before the flow channel 40, so that the molded product and the plastic material are automatically pulled apart, realizing automatic water cut-off, reducing manual labor costs, improving product production quality, and improving production efficiency.

[0042] Furthermore, two sets of guide rods 22 are provided on the lower mold core 21. The two sets of guide rods 22 pass through the two ends of the middle top block 30 and extend into the upper mold core 11. The two sets of guide rods 22 are relatively arranged at the bottom end of the lower mold core 21 and are located outside the two sets of top rods 31. By providing two sets of guide rods 22, a guiding role is played when the middle top block 30 is lifted up, thereby improving the moving stability of the middle top block 30.

[0043] Furthermore, both ends of the middle top block 30 are provided with protrusions 32 extending outward. The protrusions 32 are provided with a first slot and a second slot respectively between the upper mold core 11 and the lower mold core 21, and the first slot and the second slot form a mounting cavity 33 for placing the protrusions 32. The middle top block 30 is provided with two groups of molding parts 34 distributed on the left and right. By providing the protrusions 32, the strength and stability of the middle top block 30 are improved, and at the same time, the installation cavity 33 and the protrusions 32 are installed in coordination with each other, which is convenient for the staff to quickly locate and improve the installation efficiency.

[0044] Preferably, the upper mold base 10 includes a top plate 12, a flow channel plate 13 and an upper mold plate 14. The flow channel plate 13 is arranged at the bottom end of the top plate 12. The upper mold plate 14 is arranged at the bottom end of the flow channel plate 13. The center of the upper mold plate 14 is connected to the upper mold core 11. The lower mold base 20 includes a bottom plate 23 and a lower mold plate 24. The bottom plate 23 is arranged at the bottom end of the lower mold plate 24. The lower mold plate 24 is arranged at the bottom end of the upper mold plate 14 and connected to the lower mold core 21.

[0045] When the mold is closed, the upper mold core 11 and the lower mold core 21 are interlocked, and the upper mold plate 14 and the lower mold plate 24 are in contact with each other, thereby completing the injection molding of the product. When the mold is opened, the upper mold base 10 and the upper mold core 11 move upward, and the middle top block 30 is lifted before the flow channel 40 under the action of the top rod 31, thereby achieving automatic separation of the molded product and the plastic material, realizing automatic water cut-off, and improving production efficiency.

[0046] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A water nozzle self-breaking mold, characterized in that: include: An upper die base, wherein an upper die core is arranged in the upper die base; A lower die seat, wherein a lower die core is provided in the lower die seat, and the lower die core and the upper die core can be interlocked; a middle ejecting block for ejecting material is provided in the lower die core; Among them, the upper mold core, the lower mold core and the middle top block are combined to form a flow channel and two groups of molding cavities distributed on the left and right, and the flow channel is connected with the two groups of molding cavities; a glue inlet channel is provided between the flow channel and the molding cavities; the glue inlet channel is provided with a breaking portion extending outward near one end of the molding cavity.

2. A water nozzle self-breaking mold according to claim 1, characterized in that: The glue inlet and glue outlet are arranged on the glue inlet channel; the glue inlet is arranged between the glue inlet channel and the flow channel; the glue outlet is arranged between the glue inlet channel and the breaking part.

3. A water nozzle self-breaking mold according to claim 2, characterized in that: The outer diameter of the glue inlet is greater than the outer diameter of the glue outlet; the outer diameter of the broken portion is equal to the outer diameter of the glue outlet.

4. A water nozzle self-breaking mold according to claim 1, characterized in that: The flow channel includes a main flow channel and two groups of flow channels; the two groups of branch flow channels are arranged on both sides of the main flow channel opposite to each other; and the branch flow channels are connected to the glue inlet channel.

5. The self-breaking nozzle mold according to claim 1, characterized in that: Two groups of push rods for lifting the middle top block are fixedly connected to the middle top block; the two groups of push rods are distributed on the left and right sides of the bottom end of the middle top block.

6. A water nozzle self-breaking mold according to claim 5, characterized in that: Two groups of guide rods are arranged on the lower die core; the two groups of guide rods pass through the two ends of the middle top block and extend into the upper die core.

7. A water nozzle self-breaking mold according to claim 6, characterized in that: The two groups of guide rods are arranged at the bottom end of the lower mold core opposite to each other and are located outside the two groups of ejector rods.

8. A water nozzle self-breaking mold according to claim 7, characterized in that: Both ends of the middle top block are provided with protruding parts extending outward; the protruding parts are respectively provided with a first slot and a second slot between the upper mold core and the lower mold core, and the first slot and the second slot form an installation cavity for placing the protruding parts; the middle top block is provided with two groups of forming parts distributed on the left and right.

9. A water nozzle self-breaking mold according to any one of claims 1 to 8, characterized in that: The upper mold base includes a top plate, a flow channel plate and an upper mold plate; the flow channel plate is arranged at the bottom end of the top plate; the upper mold plate is arranged at the bottom end of the flow channel plate; and the center of the upper mold plate is connected to the upper mold core.

10. A water nozzle self-breaking mold according to claim 9, characterized in that: The lower mold base includes a bottom plate and a lower mold plate; the bottom plate is arranged at the bottom end of the lower mold plate; the lower mold plate is arranged at the bottom end of the upper mold plate and connected to the lower mold core; when the mold is closed, the upper mold plate conflicts with the lower mold plate.

Images