Cavity cooling groove structure, cavity and injection mold

Abstract

A mold cavity cooling groove structure, a mold cavity and an injection mold, including a cooling groove located on the mold body of the mold cavity, which guides the flow of cooling medium and provides cooling to at least part of the mold body through the cooling groove; the cooling groove includes a side flow part and a circulation area; the side flow part includes a first drainage area, a second drainage area, a first side flow area and a second side flow area, the first drainage area includes a first drainage groove extending in the direction of the circulation area and a first guide groove extending along the circumference of the mold body; the second drainage area includes a second drainage groove extending in the direction of the circulation area and a second guide groove extending along the circumference of the mold body; the distance between the first slot or the second slot of the mold cavity and the end of the mold body can be flexibly adjusted as needed, and the position of the first slot or the second slot can be flexibly adjusted to realize flexible entry and exit of coolant, so that the mold cavity can be adapted to different mold cavity plate cooling channels, and has good versatility.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molds, and in particular relates to a mold cavity cooling groove structure, a mold cavity and an injection mold. Background Art

[0002] The main function of the mold cavity cooling trough structure is to cool the mold cavity by introducing coolant into it so that the heat on the outer wall of the mold cavity is taken away by the coolant. The existing mold cavity cooling trough structure is shown in the Chinese utility model patent with patent number 202120582068.0, which discloses a mold cavity water trough structure with uniform cooling, including a mold body, a mold cavity arranged in the mold body, reinforcing ribs spirally arranged on the outer surface of the mold body, and a continuous water trough formed by the reinforcing ribs. The outer surface of the mold body is provided with a front end flange, a guide convex ring, a partition plate connected to the front end flange and the reinforcing rib at both ends, and a rib plate connected to the guide convex ring and the reinforcing rib at both ends. The front end flange, the guide convex ring and the reinforcing rib are arranged in sequence along the axial direction of the mold body. A first annular water groove is provided between the guide convex ring and the front flange, and a second annular water groove is provided between the guide convex ring and the reinforcing rib; the partition plate and the rib plate both extend axially along the mold body, and a water inlet groove is provided between the partition plate and the rib plate, and a water inlet is provided in the water inlet groove, which is away from the front flange and coplanar with the second annular water groove; a first water groove is provided on the side of the partition plate away from the water inlet groove, and a second water groove is provided on the side of the rib plate away from the water inlet groove. The water inlet groove, the first annular water groove, the first water groove, the second annular water groove, the second water groove, and the continuous water groove are connected in sequence to form a cooling water channel. In the cooling groove of this mold cavity, the positions of the water inlet and outlet are relatively fixed and cannot be flexibly adjusted according to needs. They can only be adapted to the corresponding mold cavity plate water channel, and have poor versatility. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a mold cavity cooling groove structure, a mold cavity and an injection mold.

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

[0005] A mold cavity cooling groove structure includes a cooling groove located on the mold body of the mold cavity, which guides the flow of cooling medium through the cooling groove to provide cooling to at least part of the mold body; the cooling groove includes a side flow part and a circulation area; the side flow part includes a first drainage area, a second drainage area, a first side flow area and a second side flow area, the first drainage area includes a first drainage groove extending in the direction of the circulation area and a first guide groove extending along the circumference of the mold body; the second drainage area includes a second drainage groove extending in the direction of the circulation area and a second guide groove extending along the circumference of the mold body; the first drainage groove, the first guide groove, the first side flow area, the circulation area, the second side flow area, the second guide groove, and the second drainage groove are connected in sequence.

[0006] In the present invention, the first drainage area and the second drainage area include a first notch and a second notch, respectively. The first notch and the second notch are communicated with the first drainage groove and the second drainage groove, respectively.

[0007] In the present invention, the first notch and the second notch are located at the ends of the first drainage groove and the second drainage groove, respectively.

[0008] In the present invention, the first drainage area and the first lateral flow area are rotationally symmetrical with the second drainage area and the second lateral flow area respectively about the central axis of the mold body.

[0009] In the present invention, the first side flow area includes at least one first side flow groove, which is arranged along the circumference of the outer wall of the mold body; the second side flow area includes a second side flow groove corresponding to the first side flow groove, which is arranged along the circumference of the outer wall of the mold body.

[0010] In the present invention, the first side flow groove adjacent to the first guide groove is opposite to the guiding direction defined by the first guide groove; the second side flow groove adjacent to the second guide groove is opposite to the guiding direction defined by the second guide groove.

[0011] In the present invention, the circulation zone includes a first circulation groove, a second circulation groove and a diversion groove, and the first side flow zone, the first circulation groove, the diversion groove, the second circulation groove and the second side flow zone are connected in sequence.

[0012] Based on the mold cavity cooling groove structure provided above, the present invention also provides a mold cavity, including a mold body, the outer wall of the mold body is provided with the above mold cavity cooling groove structure, and the hollow part inside the mold cavity defines at least a part of the molding cavity.

[0013] In the present invention, a first annular flange and a second annular flange are provided at both ends of the mold body, and the cooling groove is defined by the first annular flange, the second annular flange and the reinforcing ribs located between the first annular flange and the second annular flange; the number of the reinforcing ribs is two, and the two reinforcing ribs are rotationally symmetrical about the axis of the mold body.

[0014] Based on the mold cavity provided above, the present invention also provides an injection mold, comprising at least one molding component defined by a core structure, a mold lip, a mold cavity bottom and the above mold cavity, wherein the molding component at least defines a portion of the molding cavity.

[0015] The beneficial effects of the present invention are: by arranging the first drainage area, the second drainage area, the first side flow area, the second side flow area and the circulation area on the mold body; the distance between the coolant inlet and outlet and the end of the mold body can be adjusted, so that the position of the coolant inlet and outlet on the mold cavity can be flexibly set, so that the mold cavity is not restricted by the position of the coolant channel of the existing mold cavity plate, and the size range of the existing mold forming products is enhanced.

[0016] By symmetrically arranging the first notch and the second notch, the first drainage area and the second drainage area, the first side flow area and the second side flow area on both sides of the mold body, when the coolant enters the side flow part and flows, an inflow area and an outflow area are formed on both sides of the mold body, and the coolant enters the circulation area through the inflow area, the circulation area wraps the outside of the mold body, and then enters the outflow area for discharge after passing through the circulation area; therefore, according to needs, the distance between the first notch or the second notch of the mold cavity and the end of the mold body can be flexibly adjusted, and the position of the first notch or the second notch can be flexibly adjusted to realize flexible inflow and outflow of coolant, so that the mold cavity can be adapted to different mold cavity plate cooling channels, and has good versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the cooling groove structure of the mold cavity when N=1 in this embodiment;

[0018] Figure 2 Schematic diagram of the cooling groove structure of the mold cavity when N=2 in this embodiment;

[0019] Figure 3 Schematic diagram of the mold cavity when N=1 in this embodiment;

[0020] Figure 4 Schematic diagram of the mold cavity when N=2 in this embodiment;

[0021] Figure 5 This is a schematic diagram of a spiral cooling groove structure in which the first and second circulating grooves on the outer side wall of the mold cavity are formed when N=1 in this embodiment. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0023] Example:

[0024] like Figures 1 to 5As shown, this embodiment discloses a mold cavity cooling groove structure, which is located on the mold body 1 of the mold cavity and includes a cooling groove opened on the outer wall of the mold body 1; the cooling groove includes a side flow part 2 for guiding the coolant to flow on one side of the mold body 1 and a circulation area 3 for guiding the coolant to flow around the mold body 1; the side flow part 2 includes a first drainage area 21 and a second drainage area 22 for guiding the coolant into the cooling groove, and the first drainage area 21 and the second drainage area 22 are rotationally symmetric about the central axis of the mold body 1; the side flow part 2 also includes a first side flow area 23 and a second side flow area 24 for guiding the coolant to flow on both sides of the mold body 1 respectively, and the first side flow area 23 and the second side flow area 24 are rotationally symmetric about the central axis of the mold body 1; the ends of the first drainage area 21 and the second drainage area 22 are respectively provided with a first notch 211 and a second notch 221; the first notch 211, the first drainage area 21, the first side flow area 23, the circulation area 3, the second side flow area 24, the second drainage area 22 and the second notch 221 are connected in sequence. By setting the first drainage area 21 and the second drainage area 22, after the coolant enters the first drainage area 21 from the first slot 211, it enters the first side flow area 23 under the drainage action of the first drainage area 21. The coolant flows on one side of the mold body 1 under the guidance of the first side flow area 23, then enters the circulation area 3 and flows around the mold body 1, and then enters the second side flow area 24. The coolant flows on the other side of the mold body 1 under the guidance of the second side flow area 24, and then is discharged from the second slot 221 under the drainage action of the second drainage area 22. Therefore, the mold cavity cooling groove structure of this embodiment is symmetrically arranged on both sides of the mold body 1 by arranging the first notch 211 and the second notch 221, the first drainage area 21 and the second drainage area 22, the first side flow area 23 and the second side flow area 24; so that when the coolant enters the side flow part 2 and flows, an inflow area and an outflow area are formed on both sides of the mold body 1, and the coolant enters the circulation area 3 through the inflow area, and the circulation area 3 wraps the outer side of the mold body 1, and then enters the outflow area for discharge after passing through the circulation area 3; therefore, the distance between the first notch 211 or the second notch 221 of the mold cavity and the end of the mold body 1 can be flexibly adjusted as needed, and the position of the first notch 211 or the second notch 221 can be flexibly adjusted to achieve flexible inflow and outflow of coolant, so that it can be adapted to different mold cooling liquid channels and has good versatility.

[0025] In this embodiment, the first drainage area 21 includes a first drainage groove 212 extending toward the circulation area 3 and a first guide groove 213 extending circumferentially along the mold body 1. The first notch 211, the first drainage groove 212, the first guide groove 213, and the first side flow area 23 are sequentially connected. Similarly, the second drainage area 22 includes a second drainage groove 222 extending toward the circulation area 3 and a second guide groove 223 extending circumferentially along the mold body 1. The second notch 221, the second drainage groove 222, the second guide groove 223, and the second side flow area 24 are sequentially connected.

[0026] In this embodiment, the first side flow area 23 includes at least one first side flow groove 231, and the second side flow area 24 is provided with a corresponding number of second side flow grooves 241 as the first side flow grooves 231. The first side flow grooves 231 are arranged around the circumference of the outer wall of the mold body 1. According to the width requirement of the axial coverage of the outer wall of the mold body 1 by the side flow part 2, N first side flow grooves 231 can be provided. When N=1, a first side flow groove 231 is provided in the first side flow area 23, and first connecting grooves 235 are provided at both ends of the first side flow groove 231 to respectively connect the first drainage area 21 and the circulation area 3; at this time, the first side flow groove 231 is opposite to the guiding direction defined by the first guide groove 213. When N=2, two first side flow channels 231 are provided in the first side flow area 23. The two first side flow channels 231 are divided into a front first side flow channel 232 near the first guide channel 213 and a rear first side flow channel 234 near the circulation area 3. A first connecting channel 235 is provided to connect the first guide channel 213 with the front first side flow channel 232, between the front first side flow channel 232 and the rear first side flow channel 234, and between the rear first side flow channel 234 and the circulation area 3. The guiding directions defined by the first guide channel 213 and the front first side flow channel 232 are opposite, and the guiding directions defined by the front first side flow channel 232 and the rear first side flow channel 234 are opposite. When N=3, three first side flow grooves 231 are provided in the first side flow zone 23, and the three first side flow grooves 231 are divided into the first section first side flow groove 231, the middle section first side flow groove and the last section first side flow groove 234 along the axial direction of the mold body 1. The first section first side flow groove 231 is arranged near the first guide groove 213, and the last section first side flow groove 234 is arranged near the circulation zone 3. A first connecting groove 235 is provided between the first guide groove 213 and the front section first side flow groove 232, between the front section first side flow groove 232 and the middle section first side flow groove, between the middle section first side flow groove and the last section first side flow groove 234, and between the last section first side flow groove 234 and the circulation zone 3. The first guide groove 213 is opposite to the guiding direction defined by the first side flow groove 232 of the front section; the guiding direction defined by the first side flow groove 232 of the front section is opposite to the guiding direction defined by the first side flow groove of the middle section; the guiding direction defined by the first side flow groove of the middle section is opposite to the guiding direction defined by the first side flow groove 234 of the last section.By analogy, when N>3, N first side flow grooves 231 are provided in the first side flow zone 23, and the N first side flow grooves 231 are divided into the first section first side flow groove 231, the middle section first side flow groove and the last section first side flow groove 234 along the axial direction of the mold body 1, and there are N-2 middle section first side flow grooves. The first section first side flow groove 231 is arranged near the first guide groove 213, and the last section first side flow groove 234 is arranged near the circulation zone 3. A first connecting groove 235 is provided between the first guide groove 213 and the front section first side flow groove 232, between the front section first side flow groove 232 and the middle section first side flow groove, between adjacent middle section first side flow grooves, between the middle section first side flow groove and the last section first side flow groove 234, and between the last section first side flow groove 234 and the circulation zone 3. The first guide groove 213 and the front first side flow groove 232 have opposite guiding directions; the front first side flow groove 232 and the adjacent middle first side flow groove have opposite guiding directions; the adjacent middle first side flow grooves have opposite guiding directions; and the rear first side flow groove 234 and the adjacent middle first side flow groove have opposite guiding directions. In other words, the coolant flows in the side flow portion 2 in a reverse zigzag manner. Preferably, the length of the first connecting groove 235 corresponds to the width of the first side flow groove 231.

[0027] In this embodiment, the first side flow zone 23 and the second side flow zone 24 are rotationally symmetrical about the central axis of the mold body 1. The second side flow zone 24 is provided with a second side flow groove 241 corresponding to the first side flow groove 231 and a second connecting groove 242 corresponding to the first connecting groove 235. The first side flow groove 231 and the second side flow groove 241 are located between the first connecting groove 235 and the second connecting groove 242. The structure of the second side flow zone 24 is the same as that of the first side flow zone 23, and is specifically set with reference to the first side flow zone 23. The second side flow zone 24 will not be described in detail here.

[0028] In this embodiment, the circulation area 3 includes a first circulation groove 31, a second circulation groove 32 and a transfer groove 33, and the first side flow area 23, the first circulation groove 31, the transfer groove 33, the second circulation groove 32 and the second side flow area 24 are connected in sequence. The first circulation groove 31 and the second circulation groove 32 are synchronously arranged around the outer wall of the mold body 1; in order to make the coolant flow smoothly and evenly in the cooling groove; the width of the first drainage groove 212, the second drainage groove 222, the first guide groove 213, the second guide groove 223, the first side flow groove 231, the second side flow groove 241, the first circulation groove 31, the second circulation groove 32 and the transfer groove 33 are equal, so that the flow rate of the coolant is uniform during circulation, the cooling of each part of the mold body 1 is uniform, and the cooling and molding of the product is ensured.

[0029] In this embodiment, the first circulation groove 31 includes a plurality of first circulation segments 311 extending circumferentially along the outer wall of the mold body 1 and a first direct current segment 312 extending axially along the outer wall of the mold body 1. The first circulation segments 311 and the first direct current segments 312 are alternately connected in sequence. The plurality of first circulation segments 311 are arranged axially along the outer wall of the mold body 1, and the plurality of first direct current segments 312 are staggered along the outer wall of the mold body 1. Correspondingly, the second circulation groove 32 includes a second circulation segment 321 corresponding to the first circulation segment 311 and a second direct current segment 322 corresponding to the first direct current segment 312. The arrangement structure of the second circulation segment 321 and the second direct current segment 322 is the same as that of the first circulation segment 311 and the first direct current segment 312, and the arrangement structure of the second circulation segment 321 and the second direct current segment 322 is not further described herein. When the circumferential angle between the first and second circulation sections 311, 321 of adjacent diversion grooves 33 changes by 180°, the width changes accordingly in the axial direction; that is, the first and second circulation sections 311, 321 of a layer change to the first and second circulation sections 311, 321 of the next layer. Both the first and second circulation sections 311, 321 are perpendicular to the axis of the mold body 1. Adjacent first circulation sections 311 are connected by a first direct current section 312, and the angle between the first direct current section 312 and the first circulation section 311 is within the range of 90°-135°. Similarly, adjacent second circulation sections 321 are connected by a second direct current section 322, and the angle between the second direct current section 322 and the second circulation section 321 is within the range of 90°-135°.

[0030] like Figure 5 As shown, in addition, the first circulation groove 31 and the second circulation groove 32 can also be a spiral cooling groove structure spirally surrounding the outer wall of the mold body.

[0031] Based on the mold cavity cooling groove structure disclosed in the above embodiment, this embodiment further discloses a mold cavity, comprising a mold body 1, wherein the outer wall of the mold body 1 is provided with the above mold cavity cooling groove structure, and the hollow portion inside the mold cavity defines at least a portion of the molding cavity. A first annular flange 11 and a second annular flange 12 are respectively provided at both ends of the mold body 1, and the first annular flange 11 and the second annular flange 12 are both provided around the outer wall of the mold body 1; the outer wall of the mold body 1 is also provided with an outwardly protruding reinforcing rib 13, and the reinforcing rib 13 is provided between the first annular flange 11 and the second annular flange 12. The cooling groove is defined by the first annular flange 11, the second annular flange 12, and the reinforcing rib 13, and the width of the cooling groove remains unchanged. Preferably, there are two reinforcing ribs 13, and the two reinforcing ribs 13 are rotationally symmetrical about the axis of the mold body 1; one end of the reinforcing rib 13 is connected to the first annular flange 11, and the two reinforcing ribs 13 and the first annular flange 11 respectively define a first drainage area 21 and a second drainage area 22.

[0032] Based on a mold cavity disclosed in the above embodiment, this embodiment also discloses an injection mold. Based on a mold cavity provided above, the present invention also provides an injection mold, comprising at least one molding component defined by a mold core structure, a mold lip, a mold cavity bottom and the above mold cavity, wherein the molding component at least defines a portion of the molding cavity.

[0033] The above description is only a preferred embodiment of the present invention. Any technical solution that achieves the purpose of the present invention by substantially the same means shall fall within the protection scope of the present invention.

Claims

1. A mold cavity cooling groove structure, comprising a cooling groove located on a mold body of the mold cavity, guiding a cooling medium to flow through the cooling groove to provide cooling to at least a portion of the mold body; characterized in that: The cooling groove includes a side flow part and a circulation area; the side flow part includes a first drainage area, a second drainage area, a first side flow area and a second side flow area, the first drainage area includes a first drainage groove extending in the direction of the circulation area and a first guide groove extending along the circumference of the mold body; the second drainage area includes a second drainage groove extending in the direction of the circulation area and a second guide groove extending along the circumference of the mold body; the first drainage groove, the first guide groove, the first side flow area, the circulation area, the second side flow area, the second guide groove and the second drainage groove are connected in sequence; the first drainage area and the first side flow area are rotationally symmetrical with the second drainage area and the second side flow area respectively about the central axis of the mold body.

2. The mold cavity cooling groove structure according to claim 1, characterized in that: The first drainage area and the second drainage area include a first notch and a second notch, respectively. The first notch and the second notch are communicated with the first drainage groove and the second drainage groove, respectively.

3. The mold cavity cooling groove structure according to claim 2, characterized in that: The first notch and the second notch are respectively located at the ends of the first drainage groove and the second drainage groove.

4. The mold cavity cooling groove structure according to claim 1, characterized in that: The first side flow area includes at least one first side flow groove, which is arranged along the circumference of the outer wall of the mold body; the second side flow area includes a second side flow groove corresponding to the first side flow groove, which is arranged along the circumference of the outer wall of the mold body.

5. The mold cavity cooling groove structure according to claim 4, characterized in that: The first side flow groove adjacent to the first guide groove is opposite to the guiding direction defined by the first guide groove; the second side flow groove adjacent to the second guide groove is opposite to the guiding direction defined by the second guide groove.

6. The mold cavity cooling groove structure according to claim 1, characterized in that: The circulation area includes a first circulation groove, a second circulation groove and a diversion groove, and the first side flow area, the first circulation groove, the diversion groove, the second circulation groove and the second side flow area are connected in sequence.

7. A mold cavity, including a mold body, characterized in that: The outer side wall of the mold body is provided with a mold cavity cooling groove structure as described in any one of claims 1 to 6, and the hollow portion inside the mold cavity defines at least a portion of the molding cavity.

8. The mold cavity according to claim 7, characterized in that: A first annular flange and a second annular flange are provided at both ends of the mold body, and the cooling groove is defined by the first annular flange, the second annular flange and the reinforcing ribs located between the first annular flange and the second annular flange; there are two reinforcing ribs, and the two reinforcing ribs are rotationally symmetrical about the axis of the mold body.

9. Injection mold, characterized in that: The mold assembly comprises at least one mold component defined by a core structure, a mold lip, a mold cavity bottom and the mold cavity according to claim 8, wherein the mold component defines at least a portion of the molding cavity.

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