A mold cavity structure capable of deep under-lip engagement and cooling

Abstract

A kind of die cavity structure that can be deeply into die lip cooperation and cool, including die cavity main body, forming cavity for bottle blank forming is equipped in die cavity main body, die cavity main body includes die cavity connecting portion and die cavity cooling portion, die cavity connecting portion at least includes the die cavity deep portion that is deeply into die lip inner side cooperation;Die cavity main body is formed with first die cavity cooling channel and second die cavity cooling channel, first die cavity cooling channel is located in die cavity cooling portion, first die cavity cooling channel is at least formed by first die cavity cooling groove close to die cavity deep portion, second die cavity cooling channel extends to die cavity deep portion, second die cavity cooling channel is in the circumference with first die cavity cooling groove It is communicated with.Bottle blank mould field belongs to the utility model, the second die cavity cooling flow path of the utility model is designed, can cool die cavity deep portion, such cooling mode can make entire forming cavity all can be cooled sufficiently, effectively guarantee the forming quality of bottle blank same,

Description

Technical Field

[0001] This utility model relates to the field of preform mold technology, specifically to a mold cavity structure that can deeply fit and cool the mold lip. Background Technology

[0002] In existing multi-cavity injection molding technology, due to the limitations of the mold platen size, mold design typically needs to minimize the radial space of the molding components to accommodate more cavities within a limited space. However, this design poses a challenge to the structural stability of the mold lip. In traditional mold lip designs, the support ring forming part of the preform opening is usually located at the second end of the mold lip, mating with the mold cavity. When the radial dimension of the second end of the mold lip is compressed, the distance between the support ring forming part of the preform opening and the outer peripheral surface of the second end of the mold lip becomes too small, making it difficult to ensure the stability of the mold lip structure. To solve this problem, it is usually necessary to move the support ring forming part of the preform opening into the mold lip platen, and accordingly design the mold cavity 2 as a mating structure that extends deep into the second end of the mold lip 1, such as... Figure 1 As shown.

[0003] In the preform molding process using this structure, the preform neck and a small portion of the preform neck are primarily cooled by the die lip channel, while the majority of the preform neck and body are cooled by the mold cavity channel. However, because the die lip channel cannot extend to the second end of the die lip, and the mold cavity channel cannot extend to the flange portion of the mold cavity (i.e., the part connecting the mold cavity locking ring) and the deep portion of the mold cavity (i.e., the part extending into the second end of the die lip), or, when the mold cavity and the mold cavity locking ring are an integral structure, the mold cavity channel cannot extend into the deep portion of the mold cavity large plate, the cooling effect on most of the preform neck and body areas is poor. This results in the molding cavity as a whole not being adequately cooled, thus severely affecting the quality of the final preform. Utility Model Content

[0004] To address the technical problems existing in the prior art, the purpose of this utility model is to provide a mold cavity structure that can deeply engage and cool the mold lip. It is designed with a second mold cavity cooling flow path that can penetrate deep into the mold lip to cool the mold cavity flange and the deep part of the mold cavity, or to cool the large plate part of the mold cavity, especially the deep part of the mold cavity. This cooling method can ensure that the entire molding cavity is fully cooled, effectively guaranteeing the molding quality of the preform.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a mold cavity structure that can deeply fit and cool the mold lip, comprising a mold cavity body, a molding cavity for preform forming inside the mold cavity body, the mold cavity body including a mold cavity connecting part and a mold cavity cooling part, the mold cavity connecting part including at least a mold cavity deep part that fits deeply inside the mold lip;

[0006] The main body of the mold cavity has a first mold cavity cooling channel and a second mold cavity cooling channel. The first mold cavity cooling channel is located in the mold cavity cooling part and is formed by at least a first mold cavity cooling groove near the deep part of the mold cavity. The second mold cavity cooling channel extends to the deep part of the mold cavity and communicates with the first mold cavity cooling groove in the circumferential direction.

[0007] As a preferred embodiment, the second mold cavity cooling channel includes:

[0008] The internal cooling channel surrounds the molding cavity in the circumferential direction with its beginning and end spaced apart, and extends in the axial direction following the shape of the molding cavity.

[0009] The connecting channel surrounds the molding cavity in the circumferential direction with its beginning and end spaced apart. One side connects to the internal cooling channel, and the other side connects to the cooling tank of the first mold cavity.

[0010] As a preferred embodiment, the outer wall of the mold cavity cooling section is provided with at least a first straight section reinforcing rib and a first ring section reinforcing rib;

[0011] One end of the first straight reinforcing rib is connected to the mold cavity connection part, and the other end extends in a positive direction parallel to the main axis of the mold cavity.

[0012] One end of the first ring-section reinforcing rib is connected to the other end of the first straight-section reinforcing rib, and the other end extends in the circumferential direction and has a gap with the first straight-section reinforcing rib.

[0013] A first mold cavity cooling groove is formed between the first ring-section reinforcing rib and the mold cavity connection part. A first channel inlet is formed between one end of the first ring-section reinforcing rib and the mold cavity connection part. A first channel outlet is formed between the other end of the first ring-section reinforcing rib and the mold cavity connection part. The first channel outlet is connected to the end face of the mold cavity cooling part.

[0014] As a preferred embodiment, the mold cavity connecting portion further includes a mold cavity flange portion, a mold cavity cooling portion, a mold cavity flange portion, and a mold cavity in-depth portion connected in sequence; or, the mold cavity connecting portion is a mold cavity large plate, the end face of which is provided with a mold cavity large plate groove to form a mold cavity in-depth portion;

[0015] One end of the first straight reinforcing rib is connected to the mold cavity flange or the mold cavity disc.

[0016] The first ring-shaped reinforcing rib forms a first mold cavity cooling groove between itself and the mold cavity flange or the mold cavity plate. One end of the first ring-shaped reinforcing rib and the first straight reinforcing rib form a first channel inlet between itself and the mold cavity flange or the mold cavity plate. The other end of the first ring-shaped reinforcing rib and the first straight reinforcing rib form a first channel outlet between itself and the mold cavity flange or the mold cavity plate.

[0017] As a preferred embodiment, one end of the first annular reinforcing rib is connected to the other end of the first straight reinforcing rib via a water inlet reinforcing rib assembly, and a first channel inlet is formed between the water inlet reinforcing rib assembly, the first straight reinforcing rib, and the connection portion with the mold cavity. The water inlet reinforcing rib assembly includes:

[0018] The first water inlet straight section reinforcing rib has one end connected to the other end of the first straight section reinforcing rib, and the other end extends in a positive direction parallel to the main axis of the mold cavity.

[0019] The water inlet ring section reinforcing rib has one end connected to the other end of the first water inlet straight section reinforcing rib, and the other end extends along the circumferential direction of the mold cavity body.

[0020] The second water inlet straight section reinforcing rib has one end connected to the other end of the water inlet ring section reinforcing rib, and the other end extends in the opposite direction parallel to the main axis of the mold cavity.

[0021] As a preferred embodiment, the first mold cavity cooling channel further includes a second mold cavity cooling groove, the outlet of the first groove is connected to the inlet of the second groove of the second mold cavity cooling groove, and the outlet of the second groove of the second mold cavity cooling groove is connected to the end face of the mold cavity cooling section.

[0022] As a preferred embodiment, the second mold cavity cooling tank includes multiple auxiliary cooling tanks, which are arranged sequentially between the end face of the first mold cavity cooling tank and the mold cavity cooling part. The outlet of the first channel is connected to the first auxiliary cooling tank through the inlet of the second channel. Adjacent auxiliary cooling tanks are connected through auxiliary channel connecting ports. The last auxiliary cooling tank is connected to the end face of the mold cavity cooling part through the outlet of the second channel.

[0023] As a preferred embodiment, the end face of the mold cavity cooling section is provided with a mold cavity cooling recess, and the first channel outlet or the second channel outlet is connected to the mold cavity cooling recess.

[0024] As a preferred embodiment, the mold cavity cooling section is provided with an outer peripheral wall of the mold cavity, which encloses the first mold cavity cooling groove, and the outer peripheral wall of the mold cavity is provided with a mold cavity inlet and outlet corresponding to the inlet of the first channel.

[0025] As a preferred option, the entire mold cavity body is manufactured using additive manufacturing.

[0026] Alternatively, the section of the mold cavity body corresponding to the cooling channel of the second mold cavity may be manufactured by additive manufacturing, while the remaining sections may be manufactured by subtractive manufacturing.

[0027] In summary, this utility model has the following advantages:

[0028] This invention features a second mold cavity cooling channel extending deep into the inner side of the mold lip. This channel can cool the mold cavity flange and the deeper portion of the mold cavity, or specifically the large mold cavity plate, particularly the deeper portion. This ensures thorough cooling of the entire molding cavity. Furthermore, reinforcing ribs form a specific structure for the first and second mold cavity cooling channels. This structure improves the mold cavity strength while maintaining a similar flow rate of the cooling medium in each cooling channel, resulting in uniform cooling and ensuring the molding quality of the preform. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the molding part of an existing injection mold with a cavity extending into the mold lip.

[0030] Figure 2 This is a schematic diagram of embodiment 1 of the mold cavity structure.

[0031] Figure 3 for Figure 2 A perspective view of the mold cavity structure shown.

[0032] Figure 4 This is a schematic diagram of embodiment 2 of the mold cavity structure.

[0033] Figure 5 for Figure 4 A schematic cross-sectional view of the mold cavity structure shown.

[0034] Figure 6 This is a perspective view of embodiment 3 of the mold cavity structure.

[0035] Figure 7 for Figure 6 The cross-sectional view of the mold cavity structure shown from one perspective.

[0036] Figure 8 for Figure 6 The cross-sectional view of the mold cavity structure shown from another perspective.

[0037] Figure 9 for Figure 6 A schematic diagram of the mold cavity structure shown.

[0038] Figure 10 for Figure 9 A perspective view of the mold cavity structure shown.

[0039] Figure 11 This is a cross-sectional schematic diagram of embodiment 4 of the mold cavity structure.

[0040] Among them, 1 is the lip and 2 is the cavity.

[0041] 21 Molding cavity, 22 Mold cavity connection part, 23 Mold cavity cooling part, 221 Mold cavity depth part, 222 Mold cavity flange part, 211 Blank neck forming cavity, 212 Blank body forming cavity, 24 First mold cavity cooling channel, 25 Second mold cavity cooling channel.

[0042] 232 Outer wall of mold cavity, 251 Internal cooling channel, 252 Connecting channel.

[0043] 2311 First straight section reinforcing rib, 2312 First ring section reinforcing rib, 2313 First water inlet straight section reinforcing rib, 2314 Water inlet ring section reinforcing rib, 2315 Second water inlet straight section reinforcing rib, 2316 Auxiliary straight section reinforcing rib, 2317 Auxiliary ring section reinforcing rib.

[0044] 2321 Mold cavity inlet and outlet.

[0045] 241 First channel inlet, 242 First mold cavity cooling channel, 243 First channel outlet, 244 Second channel inlet, 245 Auxiliary cooling channel, 246 Second channel outlet. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0047] Example 1

[0048] like Figures 2-3 As shown, a mold cavity structure capable of deep fitting and cooling of the mold lip is provided, including a mold cavity body, a molding cavity 21 for preform molding is provided inside the mold cavity body, the mold cavity body includes a mold cavity connecting portion 22 and a mold cavity cooling portion 23, the mold cavity connecting portion 22 includes at least a mold cavity deep portion 221 that fits deep into the inner side of the mold lip; the mold cavity body forms a first mold cavity cooling channel 24 and a second mold cavity cooling channel 25, the first mold cavity cooling channel 24 is located in the mold cavity cooling portion 23, the first mold cavity cooling channel 24 is formed by at least a first mold cavity cooling groove 242 near the mold cavity deep portion 221, the second mold cavity cooling channel 25 extends to the mold cavity deep portion 221, and the second mold cavity cooling channel 25 communicates with the first mold cavity cooling groove 242 in the circumferential direction.

[0049] The forming cavity 21 includes a neck forming cavity 211 and a neck forming cavity 212. The neck forming cavity 211 is used to form most of the neck, and the neck forming cavity 212 is used to form the entire body. The neck forming cavity 211 and a part of the neck forming cavity 212 are cooled by the second mold cavity cooling channel 25, and the other part of the neck forming cavity 212 is cooled by the first mold cavity cooling groove 242.

[0050] The second mold cavity cooling channel 25 includes an internal cooling channel 251 and a connecting channel 252. The internal cooling channel 251 surrounds the molding cavity 21 circumferentially with its beginning and end spaced apart, and extends axially following the shape of the molding cavity 21. The connecting channel 252 surrounds the molding cavity 21 circumferentially with its beginning and end spaced apart, one side connecting to the internal cooling channel 251 and the other side connecting to the first mold cavity cooling groove 242. In other embodiments, at least one gap is provided between the beginning and end of the connecting channel 252, and the gaps and / or the gaps between the beginning and end connect the internal cooling channel 251 and the first mold cavity cooling groove 242. By providing the gaps, the turbulence of the cooling medium in the internal cooling channel 251 and the first mold cavity cooling groove 242 is increased, resulting in more uniform and sufficient cooling.

[0051] The outer wall of the mold cavity cooling section 23 is provided with at least a first straight reinforcing rib 2311 and a first annular reinforcing rib 2312; one end of the first straight reinforcing rib 2311 is connected to the mold cavity connecting part 22, and the other end extends in a positive direction parallel to the positive axis of the mold cavity body, which is the direction from the mold cavity connecting part 22 to the mold cavity cooling section 23; one end of the first annular reinforcing rib 2312 is connected to the other end of the first straight reinforcing rib 2311, and the other end extends in a circumferential direction and is connected to the first straight reinforcing rib 2311. The ribs 2311 are spaced apart; a first mold cavity cooling groove 242 is formed between the first annular reinforcing rib 2312 and the mold cavity connection portion 22; a first channel inlet 241 is formed between one end of the first annular reinforcing rib 2312 and the first straight reinforcing rib 2311 and the mold cavity connection portion 22; a first channel outlet 243 is formed between the other end of the first annular reinforcing rib 2312 and the first straight reinforcing rib 2311 and the mold cavity connection portion 22; and the first channel outlet 243 connects to the end face of the mold cavity cooling portion 23. In implementation, the end face of the mold cavity cooling portion 23 is provided with a mold cavity cooling recess, and the first channel outlet 243 connects to the mold cavity cooling recess.

[0052] The mold cavity connection portion 22 has multiple implementations. Specifically, in this embodiment, the mold cavity connection portion 22 further includes a mold cavity flange portion 222, a mold cavity cooling portion 23, a mold cavity flange portion 222, and a mold cavity depth portion 221 connected in sequence; one end of the first straight reinforcing rib 2311 is connected to the mold cavity flange portion 222; a first mold cavity cooling groove 242 is formed between the first annular reinforcing rib 2312 and the mold cavity flange portion 222; a first channel inlet 241 is formed between one end of the first annular reinforcing rib 2312, the first straight reinforcing rib 2311, and the mold cavity flange portion 222; and a first channel outlet 243 is formed between the other end of the first annular reinforcing rib 2312, the first straight reinforcing rib 2311, and the mold cavity flange portion 222.

[0053] In implementation, one end of the first annular reinforcing rib 2312 is connected to the other end of the first straight reinforcing rib 2311 through the water inlet reinforcing rib group. The water inlet reinforcing rib group, the first straight reinforcing rib 2311 and the mold cavity connection part 22 form a first channel inlet 241. The water inlet reinforcing rib group includes: a first water inlet straight reinforcing rib 2313, one end of which is connected to the other end of the first straight reinforcing rib 2311, and the other end extends in the positive direction parallel to the axis of the mold cavity body; a water inlet annular reinforcing rib 2314, one end of which is connected to the other end of the first water inlet straight reinforcing rib 2313, and the other end extends in the circumferential direction of the mold cavity body; and a second water inlet straight reinforcing rib 2315, one end of which is connected to the other end of the water inlet annular reinforcing rib 2314, and the other end extends in the opposite direction parallel to the axis of the mold cavity body.

[0054] In practice, the main body of the mold cavity is made entirely by additive manufacturing; or the main body of the mold cavity is composed of at least two parts assembled by welding.

[0055] Example 2

[0056] like Figures 4-5 As shown, the difference between this embodiment and embodiment 1 is that the mold cavity cooling part 23 is provided with an outer peripheral wall 232 of the mold cavity, the outer peripheral wall 232 of the mold cavity closes the first mold cavity cooling groove 242, and the outer peripheral wall 232 of the mold cavity is provided with a mold cavity inlet and outlet 2321 corresponding to the first channel inlet 241, so as to allow the cooling medium to enter and exit the mold cavity cooling channel.

[0057] Example 3

[0058] like Figures 6-10 As shown, in conjunction with Embodiments 1 and 2, in this embodiment, the first mold cavity cooling channel 24 further includes a second mold cavity cooling groove, the first groove outlet 243 is connected to the second groove inlet 244 of the second mold cavity cooling groove, and the second groove outlet 246 of the second mold cavity cooling groove is connected to the end face of the mold cavity cooling part 23.

[0059] The second mold cavity cooling tank includes multiple auxiliary cooling tanks 245, which are sequentially arranged between the end faces of the first mold cavity cooling tank 242 and the mold cavity cooling section 23. A first channel outlet 243 communicates with the first auxiliary cooling tank 245 via a second channel inlet 244. Adjacent auxiliary cooling tanks 245 are connected via auxiliary channel connecting openings. The last auxiliary cooling tank 245 communicates with the end face of the mold cavity cooling section 23 via a second channel outlet 246. In one embodiment, the end face of the mold cavity cooling section 23 is provided with a mold cavity cooling recess, and the second channel outlet 246 communicates with the mold cavity cooling recess.

[0060] In implementation, the 245 auxiliary cooling channels are defined by auxiliary reinforcing rib groups and the corresponding outer walls of the mold cavity. The auxiliary reinforcing rib groups include multiple corresponding auxiliary straight reinforcing ribs 2316 and multiple auxiliary annular reinforcing ribs 2317; the first straight reinforcing rib 2311 and the multiple auxiliary straight reinforcing ribs 2316 are arranged sequentially along the positive direction parallel to the main axis of the mold cavity and spaced sequentially in the counter-circumferential direction; the first annular reinforcing rib 2312 and the multiple auxiliary annular reinforcing ribs 2317 are arranged sequentially along the positive direction parallel to the main axis of the mold cavity and spaced sequentially in the circumferential direction between their first or last ends; one end of the auxiliary straight reinforcing rib 2316 is connected to the other end of the first annular reinforcing rib 2312 or the previous auxiliary annular reinforcing rib 2317, and the other end is connected to one end of the corresponding auxiliary annular reinforcing rib 2317; the corresponding auxiliary annular reinforcing ribs 2316 are arranged sequentially along the positive direction parallel to the main axis of the mold cavity and spaced sequentially between their first or last ends in the circumferential direction ... There is a gap between the other end of the reinforcing rib 2317 and the corresponding auxiliary straight reinforcing rib 2316, which forms an auxiliary channel connection port; multiple auxiliary cooling channels 245 are formed between the first annular reinforcing rib 2312 and the auxiliary annular reinforcing rib 2317, and between two adjacent auxiliary annular reinforcing ribs 2317; a second channel inlet 244 is formed between one end of the first auxiliary annular reinforcing rib 2317, one end of the first auxiliary straight reinforcing rib 2316 and one end of the first annular reinforcing rib 2312, and a second channel outlet 246 is formed between the other end of the last auxiliary annular reinforcing rib 2317, and the other end of the last auxiliary straight reinforcing rib 2316 and the first annular reinforcing rib 2312 or the next last auxiliary annular reinforcing rib 2317.

[0061] In practice, the mold cavity is made entirely by additive manufacturing; or the mold cavity is made by welding together at least two parts; or the section of the mold cavity corresponding to the second mold cavity cooling channel 25 is made by additive manufacturing, and the remaining sections are made by subtractive manufacturing.

[0062] In practice, when the cooling medium enters the mold cavity through the inlet, it flows through the second mold cavity cooling channel 25 and the first mold cavity cooling tank 242 before converging into the second mold cavity cooling tank. Preferably, the sum of the cross-sectional areas of the inlet, the second mold cavity cooling channel 25, and the first mold cavity cooling tank 242 is equal. The sum of the cross-sectional areas of the second mold cavity cooling channel 25 and the first mold cavity cooling tank 242, as well as the cross-sectional area of ​​the second mold cavity cooling tank, are equal. By doing so, the cooling medium maintains a stable flow rate during the cooling process, and the influence of the convergence of the cooling medium is reduced when it enters the second mold cavity cooling tank, thus maintaining a flow rate that is basically the same as that of the second mold cavity cooling channel 25 and the first mold cavity cooling tank 242. In one embodiment, the widths of the first mold cavity cooling groove 242 and the second mold cavity cooling groove are equal. The first mold cavity cooling groove 242 is covered by the outer peripheral wall 232 of the mold cavity and / or the mold cavity mounting plate, so that the height of the first mold cavity cooling groove 242 is lower than the height of the second mold cavity cooling groove, thereby reducing the cross-sectional area of ​​the first mold cavity cooling groove 242, and making the cross-sectional area of ​​the second mold cavity cooling channel 25 equal to the sum of the cross-sectional areas of the first mold cavity cooling groove 242 and the cross-sectional area of ​​the second mold cavity cooling groove. In another embodiment, the cross-sectional area of ​​the first mold cavity cooling groove 242 is reduced by reducing its width, so that the cross-sectional area of ​​the second mold cavity cooling channel 25 is equal to the sum of the cross-sectional areas of the first mold cavity cooling groove 242 and the cross-sectional area of ​​the second mold cavity cooling groove.

[0063] In one embodiment, the diameter of the mold cavity inlet / outlet 2321 is 8 mm, corresponding to a cross-sectional area of ​​approximately 50 mm². 2 The cross-sectional area of ​​the cooling channel in the second mold cavity is approximately 10 mm². 2 The cross-sectional area of ​​the first mold cavity cooling groove 242 is approximately 40 mm². 2 The cross-sectional area of ​​the cooling groove in the second mold cavity is approximately 50 mm². 2 The internal cooling channel 251, which extends deep into the mold lip, is connected to the adjacent mold cavity cooling channel and has similar circumferential flow, so that the flow rate of the cooling medium in each mold cavity channel is almost equal, thereby making the cooling effect uniform.

[0064] Example 4

[0065] like Figure 11 As shown, in this embodiment, the mold cavity connection part 22 adopts a different implementation method than in embodiment 2, while the other unmentioned parts are the same as in embodiment 2.

[0066] In this embodiment, the mold cavity connection portion 22 is a mold cavity large plate. The end face of the mold cavity large plate is provided with a mold cavity large plate groove, forming a mold cavity deep portion 221. One end of the first straight reinforcing rib 2311 is connected to the mold cavity large plate; a first mold cavity cooling groove 242 is formed between the first annular reinforcing rib 2312 and the mold cavity large plate; a first channel inlet 241 is formed between one end of the first annular reinforcing rib 2312, the first straight reinforcing rib 2311 and the mold cavity large plate; and a first channel outlet 243 is formed between the other end of the first annular reinforcing rib 2312, the first straight reinforcing rib 2311 and the mold cavity large plate.

[0067] The above embodiments are preferred embodiments of the utility model, but the implementation of the utility model is not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the utility model shall be considered equivalent substitutions and shall be included within the protection scope of the utility model.

Claims

1. A mold cavity structure capable of deep fitting and cooling of the mold lip, comprising a mold cavity body, wherein the mold cavity body is provided with a molding cavity for preform molding, characterized in that: The main body of the mold cavity includes a mold cavity connecting part and a mold cavity cooling part. The mold cavity connecting part includes at least a mold cavity in-depth part that fits into the inner side of the mold lip. The main body of the mold cavity has a first mold cavity cooling channel and a second mold cavity cooling channel. The first mold cavity cooling channel is located in the mold cavity cooling part and is formed by at least a first mold cavity cooling groove near the deep part of the mold cavity. The second mold cavity cooling channel extends to the deep part of the mold cavity and communicates with the first mold cavity cooling groove in the circumferential direction.

2. A mold cavity structure according to claim 1, capable of deep fitting and cooling of the mold lip, characterized in that: The second mold cavity cooling channel includes: The internal cooling channel surrounds the molding cavity in the circumferential direction with its beginning and end spaced apart, and extends in the axial direction following the shape of the molding cavity. The connecting channel surrounds the molding cavity in the circumferential direction with its beginning and end spaced apart. One side connects to the internal cooling channel, and the other side connects to the cooling tank of the first mold cavity.

3. A mold cavity structure according to claim 1, capable of deep engagement and cooling of the mold lip, characterized in that: The outer wall of the mold cavity cooling section is provided with at least a first straight section reinforcing rib and a first ring section reinforcing rib; One end of the first straight reinforcing rib is connected to the mold cavity connection part, and the other end extends in a positive direction parallel to the main axis of the mold cavity. One end of the first ring-section reinforcing rib is connected to the other end of the first straight-section reinforcing rib, and the other end extends in the circumferential direction and has a gap with the first straight-section reinforcing rib. A first mold cavity cooling groove is formed between the first ring-section reinforcing rib and the mold cavity connection part. A first channel inlet is formed between one end of the first ring-section reinforcing rib and the mold cavity connection part. A first channel outlet is formed between the other end of the first ring-section reinforcing rib and the mold cavity connection part. The first channel outlet is connected to the end face of the mold cavity cooling part.

4. A mold cavity structure according to claim 3, capable of deep engagement and cooling of the mold lip, characterized in that: The mold cavity connection part also includes a mold cavity flange part, a mold cavity cooling part, a mold cavity flange part, and a mold cavity depth part connected in sequence; or, the mold cavity connection part is a mold cavity large plate, and the end face of the mold cavity large plate is provided with a mold cavity large plate groove to form a mold cavity depth part; One end of the first straight reinforcing rib is connected to the mold cavity flange or the mold cavity disc. The first ring-shaped reinforcing rib forms a first mold cavity cooling groove between itself and the mold cavity flange or the mold cavity plate. One end of the first ring-shaped reinforcing rib and the first straight reinforcing rib form a first channel inlet between itself and the mold cavity flange or the mold cavity plate. The other end of the first ring-shaped reinforcing rib and the first straight reinforcing rib form a first channel outlet between itself and the mold cavity flange or the mold cavity plate.

5. A mold cavity structure according to claim 3, capable of deep fitting and cooling of the mold lip, characterized in that: One end of the first ring-shaped reinforcing rib is connected to the other end of the first straight-section reinforcing rib via a water inlet reinforcing rib assembly. A first channel inlet is formed between the water inlet reinforcing rib assembly, the first straight-section reinforcing rib, and the mold cavity connection. The water inlet reinforcing rib assembly includes: The first water inlet straight section reinforcing rib has one end connected to the other end of the first straight section reinforcing rib, and the other end extends in a positive direction parallel to the main axis of the mold cavity. The water inlet ring section reinforcing rib has one end connected to the other end of the first water inlet straight section reinforcing rib, and the other end extends along the circumferential direction of the mold cavity body. The second water inlet straight section reinforcing rib has one end connected to the other end of the water inlet ring section reinforcing rib, and the other end extends in the opposite direction parallel to the main axis of the mold cavity.

6. A mold cavity structure according to claim 5, capable of deep engagement and cooling of the mold lip, characterized in that: The first mold cavity cooling channel also includes a second mold cavity cooling groove. The outlet of the first groove is connected to the inlet of the second groove of the second mold cavity cooling groove, and the outlet of the second groove of the second mold cavity cooling groove is connected to the end face of the mold cavity cooling part.

7. A mold cavity structure according to claim 6, capable of deep engagement and cooling of the mold lip, characterized in that: The second mold cavity cooling tank includes multiple auxiliary cooling tanks, which are arranged sequentially between the end face of the first mold cavity cooling tank and the mold cavity cooling part. The outlet of the first channel is connected to the first auxiliary cooling tank through the inlet of the second channel. Adjacent auxiliary cooling tanks are connected through auxiliary channel connecting ports. The last auxiliary cooling tank is connected to the end face of the mold cavity cooling part through the outlet of the second channel.

8. A mold cavity structure according to claim 7, capable of deep fitting and cooling of the mold lip, characterized in that: The end face of the mold cavity cooling section is provided with a mold cavity cooling recess, and the first channel outlet or the second channel outlet is connected to the mold cavity cooling recess.

9. A mold cavity structure according to claim 3 that can deeply engage with and cool the mold lip, characterized in that: The mold cavity cooling section is provided with an outer peripheral wall of the mold cavity, which encloses the first mold cavity cooling groove, and the outer peripheral wall of the mold cavity is provided with mold cavity inlets and outlets corresponding to the inlet of the first channel.

10. A mold cavity structure according to claim 1, capable of deep engagement and cooling of the mold lip, characterized in that: The main body of the mold cavity is manufactured entirely by additive manufacturing. Alternatively, the section of the mold cavity body corresponding to the cooling channel of the second mold cavity may be manufactured by additive manufacturing, while the remaining sections may be manufactured by subtractive manufacturing.

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