Exhaust block with sawtooth meshing structure and mold

Abstract

The utility model discloses an exhaust block with a sawtooth meshing structure and a mold, which comprise a first exhaust block, a second exhaust block and a third exhaust block, wherein the outer surface of the first exhaust block is provided with a convex first sawtooth part; the outer surface of the second exhaust block is provided with a concave lower pit, and the bottom surface of the lower pit is provided with a convex second sawtooth part; the second exhaust block is provided with a downward concave part, the downward concave part comprises a first downward concave part, a second downward concave part and a third downward concave part, and the downward concave depth is gradually increased; the first sawtooth part and the second sawtooth part are matched with each other in a concave-convex manner and form a wavy exhaust passage; the third lower concave part is sunken in the bottom surface of the second lower concave part and is communicated with one side vertical surface of the second exhaust block; the first downward concave part is an exhaust inlet, and the third downward concave part is an exhaust outlet. According to the utility model, three steps are equivalently divided in the depth direction, so that air flow can be smoothly extruded, and molten materials are not easy to extrude. In addition, more subtractive machining is concentrated on the second exhaust block, and all parts can be conveniently machined according to needs.

Description

Technical Field

[0001] This utility model relates to the field of mold exhaust blocks, specifically to an exhaust block and mold with a serrated interlocking structure. Background Technology

[0002] In the field of mold making such as injection molding and die casting, venting blocks are sometimes needed in molds. A venting block is a detachable mold insert or module whose main function is to efficiently expel gas from the mold cavity.

[0003] When molten plastic or molten metal fills a mold cavity at high speed, the air inside the cavity must be expelled quickly. If the gas cannot be expelled smoothly, it will be compressed and trapped in the melt, leading to various defects in the product.

[0004] Although the performance of venting blocks has basically reached a stable level, optimizing the air path of venting blocks is still a direction that mold engineers are working hard on. For example, can the gas discharge be smoother? Can the air path be easier to clean? How can the shape design of the venting block itself be made easier to process? Utility Model Content

[0005] The problem to be solved by this utility model is to provide an exhaust block and mold with a serrated interlocking structure.

[0006] To solve the above problems, this utility model provides an exhaust block and mold with a serrated interlocking structure. To achieve the above objectives, the technical solution adopted by this utility model to solve its technical problems is as follows:

[0007] An exhaust block with a serrated interlocking structure includes: a first exhaust block having a first serrated portion protruding outwards on its surface; a second exhaust block having a recessed pit on its surface, the bottom surface of which has a second serrated portion protruding outwards on its surface; and a recessed portion, wherein the second exhaust block also has a recessed portion on the side having the recessed pit, the recessed portion including a first recessed portion, a second recessed portion, and a third recessed portion, the recessed depths of which gradually increase; wherein the first serrated portion and the second serrated portion are mutually convex and concave, forming a wave-shaped exhaust channel between them; the first recessed portion and the second recessed portion are respectively located on both sides of the recessed pit and connected to a pair of side surfaces of the second exhaust block; the third recessed portion is recessed into the bottom surface of the second recessed portion and connects to one side surface of the second exhaust block; the first recessed portion corresponds to an exhaust inlet, and the third recessed portion corresponds to an exhaust outlet.

[0008] As a further improvement of this utility model, the width of the first recessed part is equal to the width of the recessed pit, and the bottom surface outline of the first recessed part is a flat rectangular surface.

[0009] As a further improvement of this utility model, the bottom contour of the second recess is an isosceles trapezoid with a third recess, and the width of the second recess gradually narrows from the exhaust inlet to the exhaust outlet.

[0010] As a further improvement of this utility model, from the perspective of the depth direction of the recess, the opening outline of the third recess is a doorway shape, which is composed of a rectangle and a semicircle. The side length of the rectangle at the junction of the rectangle and the semicircle is equal to the diameter of the semicircle.

[0011] As a further improvement of this utility model, the bottom surface of the third recessed part is a concave curved surface.

[0012] As a further improvement of this utility model, the height of the top of the second serration is lower than the height of the opening of the recess.

[0013] As a further improvement of this utility model, the first sawtooth portion includes a plurality of first protruding teeth arranged in parallel and at equal intervals, and a first tooth groove is formed between two adjacent first protruding teeth; the second sawtooth portion includes a plurality of second protruding teeth arranged in parallel and at equal intervals, and a second tooth groove is formed between two adjacent second protruding teeth; the first protruding teeth enter the second tooth groove, and the second protruding teeth enter the first tooth groove.

[0014] As a further improvement of this utility model, the protrusion height of the first tooth is smaller than the protrusion height of the second tooth.

[0015] As a further improvement of this utility model, the length direction of the first sawtooth portion is perpendicular to the length direction of the first exhaust block, and the length direction of the second sawtooth portion is perpendicular to the length direction of the second exhaust block.

[0016] On the other hand, a mold includes the aforementioned venting block with a serrated interlocking structure.

[0017] The beneficial effects of the exhaust block with a serrated interlocking structure described in this application are:

[0018] The first and second serrated sections interlock to form a wave-shaped exhaust channel. This tortuous path effectively increases the contact area and turbulence of the gas flow, improving gas flow efficiency and making gas discharge smoother.

[0019] Furthermore, and importantly, the depths of the first, second, and third recesses gradually increase, creating a gradient. Combined with the design where the first recess corresponds to the exhaust inlet and the third recess to the exhaust outlet, this depth gradient utilizes the pressure difference to naturally guide the gas flow towards the outlet, achieving directional flow and reducing stagnation and eddies.

[0020] The first, second, and third recesses are essentially three steps in the depth direction, facilitating smooth airflow and preventing molten material from being easily extruded. The third recess also makes external observation and cleaning easier.

[0021] Moreover, the second serrated part protrudes from the bottom of the recess, which means that more material reduction is done on the second exhaust block, making it easier for each component to be processed as needed. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a front view of one embodiment of the present invention;

[0024] Figure 2 This is a cross-sectional view (AA) of one embodiment of the present invention;

[0025] Figure 3 This is a partial enlarged view of section B of one embodiment of this utility model;

[0026] Figure 4 This is a perspective view of one embodiment of the present utility model;

[0027] Figure 5 This is a perspective view of one embodiment of the present utility model;

[0028] Figure 6 This is a perspective view of the first exhaust block according to one embodiment of the present invention;

[0029] Figure 7 This is a perspective view of the second exhaust block according to one embodiment of the present invention.

[0030] 1-First exhaust block; 2-Second exhaust block; 3-First flow channel; 301-First transverse channel; 302-First longitudinal channel; 4-Second flow channel; 401-Second transverse channel; 402-Second longitudinal channel; 5-Wave-shaped exhaust channel; 6-Inlet slot; 7-Outlet hole; 8-First serrated part; 801-First convex tooth; 802-First tooth groove; 9-Second serrated part; 901-Second convex tooth; 902-Second tooth groove; 10-Lower recess; 11-First lower recess; 12-Second lower recess; 13-Third lower recess. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to specific embodiments:

[0032] To achieve the purpose of this utility model, an exhaust block with a serrated interlocking structure includes: a first exhaust block 1, as shown in the figure. Figure 6 As shown, the first serrated portion 8 protrudes outwards. The second exhaust block 2 has a recessed pit 10 on its surface, as shown. Figure 7 As shown, the bottom surface of the recess 10 has an outwardly protruding second serrated portion 9. The second exhaust block 2 also has a recessed portion on the side with the recess 10, comprising a first recessed portion 11, a second recessed portion 12, and a third recessed portion 13, with the depths of the first recessed portion 11, the second recessed portion 12, and the third recessed portion 13 gradually increasing. The first serrated portion 8 and the second serrated portion 9 are mutually convex and concave, as shown... Figure 2 As shown, a wavy exhaust channel 5 is formed between the first serrated portion 8 and the second serrated portion 9. The first recess 12 and the second recess 13 are located on both sides of the recess 10 and connect to a pair of side surfaces of the second exhaust block 2. The third recess 13 is recessed into the bottom surface of the second recess 12 and connects to one side surface of the second exhaust block 2. The first recess 11 corresponds to the exhaust inlet, i.e., as shown... Figure 4 The air intake slit 6 is shown. The third recessed part 13 corresponds to the exhaust outlet, as shown in the figure. Figure 5 The air outlet 7 is shown.

[0033] like Figure 7 As shown, in some other embodiments of this utility model, the width of the first recess 11 is equal to the width of the recess 10, and the bottom surface of the first recess 11 is a flat rectangular surface.

[0034] The beneficial effects of adopting the above technical solution are: the width of the first recess 11 is equal to the width of the recess 10 and the bottom surface is a flat rectangular surface, which ensures that the exhaust inlet is a very narrow gap.

[0035] like Figure 7 As shown, in some other embodiments of the present invention, the bottom contour of the second recess 12 is an isosceles trapezoid with a third recess 13 cut out, and the width of the second recess 12 gradually narrows from the exhaust inlet to the exhaust outlet.

[0036] The beneficial effects of adopting the above technical solution are: the second recess 12 adopts an isosceles trapezoidal profile with a third recess 13 carved on the bottom surface, and the width gradually narrows towards the exhaust outlet, forming a gradually narrowing flow channel and providing a natural transition foundation.

[0037] In some other embodiments of this utility model, from the perspective along the depth direction of the recess 10, the opening outline of the third recess 13 is a doorway shape, which is composed of a rectangle and a semicircle. The side length of the rectangle at the junction of the rectangle and the semicircle is equal to the diameter of the semicircle.

[0038] The beneficial effects of adopting the above technical solution are as follows: the opening profile of the third recess 13 is designed as a doorway. The semi-circular part can reduce the gas turning resistance to a certain extent, while the rectangular part maintains the stability of the flow velocity. The dimensions at the junction of the two are matched to avoid vortices caused by abrupt changes in the profile and improve the outlet flow efficiency.

[0039] In some other embodiments of this utility model, the bottom surface of the third recessed portion 13 is a concave curved surface.

[0040] The beneficial effects of adopting the above technical solution are: the bottom surface of the third recessed part 13 adopts a concave curved surface, which follows the natural trajectory of gas flow towards the outlet, further reducing flow resistance and guiding the gas to converge towards the center of the outlet.

[0041] In some other embodiments of this invention, the top of the second serrated portion 9 is at a height lower than the opening of the recess 10.

[0042] The beneficial effect of adopting the above technical solution is that the top height of the second serrated part 9 is lower than the height of the opening of the lower recess 10, which can prevent the top of the second serrated part 9 from being damaged by foreign objects.

[0043] In some other embodiments of this utility model, the first serrated portion 8 includes a plurality of first protruding teeth 801 arranged parallel to each other and at equal intervals, and a first tooth groove 802 is formed between two adjacent first protruding teeth 801. The second serrated portion 9 includes a plurality of second protruding teeth 901 arranged parallel to each other and at equal intervals, and a second tooth groove 902 is formed between two adjacent second protruding teeth 901. The first protruding teeth 801 enter the second tooth groove 902, and the second protruding teeth 901 enter the first tooth groove 802.

[0044] The beneficial effects of adopting the above technical solution are: precise meshing ensures that the wavy exhaust channel 5 has a regular shape, avoiding local leakage or blockage.

[0045] In some other embodiments of this utility model, the protrusion height of the first tooth 801 is less than the protrusion height of the second tooth 901.

[0046] The beneficial effect of adopting the above technical solution is that the height of the first tooth 801 is less than the height of the second tooth 901, forming an asymmetrical interlocking structure upon close inspection. This can avoid the phenomenon that the first serrated part 8 and the second serrated part 9 will jam against each other and block the wavy exhaust channel 5 in certain local areas.

[0047] In some other embodiments of this utility model, the length direction of the first serrated portion 8 is perpendicular to the length direction of the first exhaust block 1, and the length direction of the second serrated portion 9 is perpendicular to the length direction of the second exhaust block 2.

[0048] The beneficial effects of adopting the above technical solution are: optimizing the internal space utilization of the exhaust block, and maintaining a certain number of serrations in the first serrated part 8 and the second serrated part 9.

[0049] A mold comprising the aforementioned venting block with a serrated interlocking structure.

[0050] In one embodiment, the top of the first tooth 801 and the second tooth 901 are provided with outer rounded corners, and the bottom of the first tooth groove 802 and the second tooth groove 902 are provided with inner rounded corners.

[0051] In one embodiment, the first exhaust block 1 has a first flow channel 3 inside, which includes a first transverse channel 301 and a first longitudinal channel 302, and the first transverse channel 301 and the first longitudinal channel 302 are perpendicularly connected to each other. The second exhaust block 2 has a second flow channel 4 inside, which includes a second transverse channel 401 and a second longitudinal channel 402, and the second transverse channel 401 and the second longitudinal channel 402 are perpendicularly connected to each other. The opening of the first transverse channel 301 and the first serrated portion 8 are respectively located on the front and back sides of the first exhaust block 1, and the opening of the second transverse channel 401 and the second serrated portion 9 are respectively located on the front and back sides of the second exhaust block 2. Cooling liquid can be introduced into the first flow channel 3 and the second flow channel 4.

[0052] The first venting block 1 and the second venting block 2 are assembled side by side. This significantly improves the gas venting effect of the mold cavity and enhances the product molding quality.

[0053] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. An exhaust block with a serrated interlocking structure, characterized in that, include: The first exhaust block has an outwardly protruding first serrated part on its surface; The second exhaust block has an inwardly recessed pit on its outer surface, and the bottom surface of the recessed pit has an outwardly protruding second serrated portion. The second exhaust block also has a recessed portion on the side with the recessed pit. The recessed portion includes a first recessed portion, a second recessed portion, and a third recessed portion, and the recessed depth of the first recessed portion, the second recessed portion, and the third recessed portion gradually increases in depth. The first serrated portion and the second serrated portion are mutually concave and convex, and a wave-shaped exhaust channel is formed between the first serrated portion and the second serrated portion. The first recessed portion and the second recessed portion are located on both sides of the recessed pit and are connected to a pair of side surfaces of the second exhaust block; The third recess is recessed into the bottom surface of the second recess, and the third recess is connected to one side surface of the second exhaust block; The first recessed portion corresponds to the exhaust inlet, and the third recessed portion corresponds to the exhaust outlet.

2. The exhaust block with a serrated interlocking structure according to claim 1, characterized in that: The width of the first recessed portion is equal to the width of the recessed pit, and the bottom surface of the first recessed portion is a flat rectangular surface.

3. The exhaust block with a serrated interlocking structure according to claim 1, characterized in that: The bottom contour of the second recess is an isosceles trapezoid with a third recess. The width of the second recess gradually narrows from the exhaust inlet to the exhaust outlet.

4. The exhaust block with a serrated interlocking structure according to claim 1, characterized in that: From the perspective of the depth of the recess, the opening outline of the third recess is a doorway shape, which is composed of a rectangle and a semicircle. The side length of the rectangle at the junction of the rectangle and the semicircle is equal to the diameter of the semicircle.

5. The exhaust block with a serrated interlocking structure according to claim 1, characterized in that: The bottom surface of the third recessed portion is a concave curved surface.

6. The exhaust block with a serrated interlocking structure according to claim 1, characterized in that: The top of the second sawtooth portion is at a height lower than the opening of the recess.

7. The exhaust block with a serrated interlocking structure according to claim 1, characterized in that: The first sawtooth portion includes a plurality of first protruding teeth arranged parallel to each other and at equal intervals, and a first tooth groove is formed between two adjacent first protruding teeth; The second sawtooth portion includes a plurality of parallel and equally spaced second convex teeth, with a second tooth groove formed between two adjacent second convex teeth; The first protruding tooth enters the second tooth groove, and the second protruding tooth enters the first tooth groove.

8. The exhaust block with a serrated interlocking structure according to claim 7, characterized in that: The protrusion height of the first tooth is less than the protrusion height of the second tooth.

9. The exhaust block with a serrated interlocking structure according to claim 1, characterized in that: The length direction of the first sawtooth portion is perpendicular to the length direction of the first exhaust block, and the length direction of the second sawtooth portion is perpendicular to the length direction of the second exhaust block.

10. A mold, characterized in that, The exhaust block having a serrated interlocking structure as described in any one of claims 1 to 9.

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