Hot nozzle cooling water jacket and injection mold

Abstract

The utility model discloses a hot nozzle cooling water jacket and an injection mold, the hot nozzle cooling water jacket comprises an outer sleeve and an inner cylinder, the peripheral wall of the outer sleeve is provided with a water inlet and a water outlet, the water inlet and the water outlet are distributed in the peripheral direction of the outer sleeve at intervals, and both penetrate through the inner wall surface of the outer sleeve; the inner barrel is detachably installed in the outer sleeve, a first cooling cavity is formed between the inner barrel and the outer sleeve, the water inlet and the water outlet are both communicated with the first cooling cavity, the inner barrel is used for being arranged outside a hot nozzle in a sleeving mode, and when the hot nozzle cooling water sleeve is installed in the installation hole, the inner barrel can be used for cooling the hot nozzle. And a second cooling cavity is formed between the outer sleeve and the hole wall of the mounting hole. According to the technical scheme, the heat dissipation effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a hot nozzle cooling water jacket and an injection mold. Background Art

[0002] An injection mold is a mold used for plastic injection molding, which usually includes a mold body for forming an injection cavity. The mold body includes a movable mold and a fixed mold. After the movable mold and the fixed mold are molded together, an injection cavity is formed inside. Generally, a hot nozzle is provided on the fixed mold, and the molten plastic is injected into the cavity through the hot nozzle. In order to avoid the local high temperature of the hot nozzle and the gate affecting the molding quality of the product, in some injection molds, a cooling cylinder is provided outside the hot nozzle, so that a cooling water channel is formed between the cooling cylinder and the fixed mold plate to avoid the hot nozzle being too high. However, the cooling cylinder is currently limited by the heat dissipation area, and the heat dissipation effect is limited. Utility Model Content

[0003] The main purpose of the utility model is to provide a hot nozzle cooling water jacket, aiming to improve the heat dissipation effect.

[0004] To achieve the above-mentioned purpose, the hot nozzle cooling water jacket proposed in the utility model is used for an injection mold, wherein the injection mold is provided with a water inlet channel, a drainage channel and a mounting hole, wherein the water inlet channel and the drainage channel both penetrate the inner wall surface of the mounting hole, and the mounting hole is communicated with the cavity of the injection mold, and the hot nozzle cooling water jacket comprises:

[0005] An outer sleeve, wherein a water inlet and a water outlet are provided on a peripheral wall of the outer sleeve, wherein the water inlet and the water outlet are spaced apart in the circumferential direction of the outer sleeve and both penetrate the inner wall surface of the outer sleeve; and

[0006] The inner cylinder is detachably installed in the outer sleeve, a first cooling cavity is formed between the inner cylinder and the outer sleeve, the water inlet and the water outlet are both connected to the first cooling cavity, the inner cylinder is used to be sleeved outside the hot nozzle, when the hot nozzle cooling water sleeve is inserted into the mounting hole, a second cooling cavity is formed between the outer sleeve and the hole wall of the mounting hole.

[0007] Optionally, the water inlet and the water outlet are arranged opposite to each other.

[0008] Optionally, the water inlet and the water outlet are both in the shape of long strips extending axially along the outer sleeve.

[0009] Optionally, the inner cylinder includes a cylinder portion and a fixed flange connected to one end of the cylinder portion, a gate portion is protruding from the end of the cylinder portion away from the fixed flange, the outer sleeve is sleeved outside the cylinder portion and abuts against the fixed flange, the first cooling cavity is formed between the outer sleeve and the cylinder portion, and the gate portion is adapted to be embedded in the inner hole of the end of the outer sleeve away from the fixed flange.

[0010] Optionally, a first annular groove is provided on the surface of the fixed flange facing the cylindrical body, the first annular groove is arranged around the cylindrical body, a second annular groove is provided on the outer peripheral surface of the outer sleeve, the water inlet and the water outlet are both located between the second annular groove and the first annular groove, and the first annular groove and the second annular groove are both used for the installation of a sealing ring.

[0011] Optionally, a locking screw hole is provided on the peripheral wall of the outer sleeve, and the locking screw hole passes through the inner wall surface of the outer sleeve so that a screw can be used to abut against the inner cylinder body through the locking screw hole.

[0012] Optionally, the inner cylinder has a gate end, and the first cooling chamber includes a confluence chamber and a plurality of cooling chambers, the confluence chamber, the confluence chamber is located at the gate end, the plurality of cooling chambers are distributed at intervals along the circumference of the inner cylinder, and are all connected to the gate end, the water inlet is arranged corresponding to one or two of the cooling chambers, and the water outlet is arranged corresponding to another one or two of the cooling chambers.

[0013] Optionally, the inner wall surface of the outer sleeve is a rotating surface, so that the outer sleeve can rotate relative to the inner cylinder.

[0014] The utility model also proposes an injection mold, comprising a mold body, a hot nozzle and a hot nozzle cooling water jacket as described above, the mold body is provided with a water inlet channel, a drainage channel and a mounting hole, the water inlet channel and the drainage channel both penetrate the inner wall surface of the mounting hole, the mounting hole is connected to the cavity of the mold body, the hot nozzle cooling water jacket is installed in the mounting hole, and a second cooling cavity is formed between the outer sleeve of the hot nozzle cooling water jacket and the hole wall of the mounting hole, and the hot nozzle is installed in the inner cylinder of the hot nozzle cooling water jacket.

[0015] Optionally, the water inlet channel and the drainage channel are arranged on opposite sides of the mounting hole, the water inlet channel corresponds to the water inlet on the hot nozzle cooling jacket, and the drainage channel corresponds to the water outlet of the hot nozzle cooling water jacket.

[0016] The technical solution of the utility model is to arrange an outer sleeve outside the inner cylinder so that a first cooling cavity is formed between the inner cylinder and the outer sleeve, and to arrange a water inlet and a water outlet connected to the first cooling cavity on the peripheral wall of the outer sleeve, so that when the hot nozzle cooling water sleeve is inserted into the mounting hole, a second cooling cavity is formed between the outer sleeve and the hole wall of the mounting hole. In this way, when in use, the inner cylinder can conduct heat to the outer sleeve, and when the coolant enters the mounting hole from the water inlet channel, part of the water can flow to the drainage channel through the second cooling cavity, and the other part of the water can flow from the water inlet to the first cooling cavity, and finally flow from the water outlet to the drainage channel. In this way, the contact area between the coolant and the hot nozzle cooling sleeve is increased, and the coolant can fully contact the inner cylinder and the outer sleeve after diversion, thereby improving the cooling efficiency of the hot nozzle cooling sleeve and improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 This is a structural schematic diagram of an embodiment of a hot nozzle cooling water jacket of the utility model;

[0019] Figure 2 for Figure 1 A cross-sectional view of the cooling water jacket of the hot nozzle;

[0020] Figure 3 for Figure 1 Exploded view of the cooling water jacket of the hot nozzle;

[0021] Figure 4 for Figure 1 A schematic diagram of the structure when the inner and outer sleeves rotate to correspond to two cooling chambers;

[0022] Figure 5 It is a partial structural schematic diagram of an embodiment of the injection mold of the utility model.

[0023] Description of Figure Numbers:

[0024] 10. Hot nozzle cooling water jacket; 11. Outer sleeve; 111. Water inlet; 112. Water outlet; 113. Second annular groove; 114. Locking screw hole; 12. Inner cylinder; 121. Cylinder part; 122. Fixed flange; 123. First annular groove; 124. Gate part; 125. Water retaining part; 13. First cooling cavity; 131. Confluence cavity; 132. Cooling cavity; 14. Second cooling cavity; 20. Mold body; 21. Mounting hole; 22. Water inlet channel; 23. Drainage channel.

[0025] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions, taking "A and / or B as an example", including solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0029] The utility model provides a hot nozzle cooling water jacket for an injection mold. The injection mold is provided with a water inlet channel, a drainage channel and a mounting hole. The water inlet channel and the drainage channel both penetrate the inner wall surface of the mounting hole. The mounting hole is communicated with a cavity of the injection mold.

[0030] In the embodiment of the present utility model, Figures 1 to 5As shown, the hot nozzle cooling water jacket 10 includes an outer sleeve 11 and an inner cylinder 12. The peripheral wall of the outer sleeve 11 is provided with a water inlet 111 and a water outlet 112. The water inlet 111 and the water outlet 112 are distributed at intervals in the circumferential direction of the outer sleeve 11 and both penetrate the inner wall surface of the outer sleeve 11; the inner cylinder 12 is detachably installed in the outer sleeve 11, and a first cooling cavity 13 is formed between the inner cylinder 12 and the outer sleeve 11. The water inlet 111 and the water outlet 112 are both connected to the first cooling cavity 13. The inner cylinder 12 is used to be sleeved on the outside of the hot nozzle. When the hot nozzle cooling water jacket 10 is installed in the mounting hole 21, a second cooling cavity 14 is formed between the outer sleeve 11 and the hole wall of the mounting hole 21.

[0031] Specifically, when the hot nozzle cooling water jacket 10 is used for the injection mold, the hot nozzle is installed in the inner cylinder 12, and the outer sleeve 11 is sleeved outside the inner cylinder 12. In this way, after the hot nozzle and the hot nozzle cooling cylinder are installed together in the mounting hole 21, a second cooling cavity 14 is formed between the outer cylinder and the hole wall of the mounting hole 21. When water (coolant) enters the mounting hole 21 from the water inlet channel 22, part of the water flows to the drainage channel 23 through the second cooling cavity 14, and part of the water flows from the water inlet 111 to the first cooling cavity 13, and finally flows to the drainage channel 23 from the water outlet 112.

[0032] The technical solution of the utility model is to arrange the outer sleeve 11 outside the inner cylinder 12, so that a first cooling cavity 13 is formed between the inner cylinder 12 and the outer sleeve 11, and the water inlet 111 and the water outlet 112 which are connected to the first cooling cavity 13 are arranged on the peripheral wall of the outer sleeve 11, so that when the hot nozzle cooling water jacket 10 is installed in the mounting hole 21, a second cooling cavity 14 is formed between the outer sleeve 11 and the hole wall of the mounting hole 21. In this way, when in use, the inner cylinder 12 can conduct heat to the outer sleeve 11, and when the coolant enters the mounting hole 21 from the water inlet channel 22, part of the water can flow to the drainage channel 23 through the second cooling cavity 14, and the other part of the water can flow from the water inlet 111 to the first cooling cavity 13, and finally flow to the drainage channel 23 from the water outlet 112. In this way, the contact area between the coolant and the hot nozzle cooling jacket is increased, and the coolant can fully contact the inner cylinder 12 and the outer sleeve 11 after diversion, so that the cooling efficiency of the hot nozzle cooling jacket can be improved, and the heat dissipation effect can be improved.

[0033] In some embodiments, the water inlet 111 and the water outlet 112 are arranged opposite to each other. After the coolant enters the first cooling chamber 13 from the water inlet 111, it can flow to the water outlet 112 in two ways. By arranging the water inlet 111 and the water outlet 112 opposite to each other, the two ways in the first cooling chamber 13 can be made the same, which can improve the heat dissipation uniformity. Of course, in other embodiments, the water inlet 111 and the water outlet 112 can also be adjacent to each other.

[0034] In some embodiments, the water inlet 111 and the water outlet 112 are both in the shape of long strips extending axially along the outer sleeve 11. This can not only make the structure of the water inlet 111 and the water outlet 112 simple and easy to process, but also make the size of the water inlet 111 and the water outlet 112 larger, thereby increasing the flow rate of the coolant.

[0035] In some embodiments, the inner cylinder 12 includes a cylinder portion 121 and a fixed flange 122 connected to one end of the cylinder portion 121, a gate portion 124 is convexly provided at one end of the cylinder portion 121 away from the fixed flange 122, the outer sleeve 11 is sleeved outside the cylinder portion 121 and abuts against the fixed flange 122, a first cooling cavity 13 is formed between the outer sleeve 11 and the cylinder portion 121, and the gate portion 124 is adapted to be embedded in the inner hole at the end of the outer sleeve 11 away from the fixed flange 122. This can not only facilitate the positioning and assembly of the outer sleeve 11 and the inner cylinder 12, but also improve the sealing between the gate portion 124 and the inner hole at the end of the outer sleeve 11. Optionally, a sealing ring is provided between the outer periphery of the gate portion 124 and the outer sleeve 11 to further improve the sealing.

[0036] In some embodiments, at least one first annular groove 123 is provided on the surface of the fixed flange 122 facing the barrel portion 121, and the first annular groove 123 is arranged around the barrel portion 121. The outer peripheral surface of the outer sleeve 11 is provided with a second annular groove 113, and the water inlet 111 and the water outlet 112 are both located between the second annular groove 113 and the first annular groove 123, and the first annular groove 123 and the second annular groove 113 are both used for installing the sealing ring. In this way, the sealing performance of the second cooling chamber 14 can be improved and the risk of coolant leakage can be reduced. Optionally, there are more than two second annular grooves 113 to improve the sealing performance.

[0037] In some embodiments, the peripheral wall of the outer sleeve 11 is provided with a locking screw hole 114, and the locking screw hole 114 passes through the inner wall surface of the outer sleeve 11, so that a screw can be used to abut against the inner cylinder 12 through the locking screw hole 114. In this way, the inner cylinder 12 and the outer sleeve 11 can be locked by screws to prevent the outer sleeve 11 from rotating relative to the inner cylinder 12. Of course, it is also possible not to use screws to lock the inner cylinder 12 and the outer sleeve 11, which can be selected according to actual needs.

[0038] In some embodiments, the inner cylinder 12 has a gate end, the first cooling chamber 13 includes a confluence chamber 131 and multiple cooling chambers 132, the confluence chamber 131 is located at the gate end, the multiple cooling chambers 132 are distributed at intervals along the circumference of the inner cylinder 12, and are all connected to the gate end, the water inlet 111 is set corresponding to one or two cooling chambers 132, and the water outlet 112 is set corresponding to the other one or two cooling chambers 132.

[0039] Specifically, the gate portion 124 is located at the gate end, and any two adjacent cooling chambers 132 are separated by a water retaining portion 125. When the coolant enters the corresponding cooling chamber 132 from the water inlet 111, it can flow from the cooling chamber 132 to the guide chamber. Under the action of water pressure, the coolant in the guide chamber is diverted to each cooling chamber 132. When entering the cooling chamber 132 connected to the water outlet 112, the coolant in the cooling chamber 132 can be discharged from the water outlet 112. With the continuous injection of coolant, under the action of pressure, the coolant in the remaining cooling chambers 132 (the water inlet 111 corresponds to the cooling chamber 132 and the water outlet 112 corresponds to other cooling chambers 132 outside the cooling chamber 132) can be continuously exchanged with the guide chamber, and the coolant can eventually flow out from the water outlet 112, which can prevent the generation of dead water in the cooling chamber 132, thereby continuously causing heat to the hot nozzle and the hot nozzle cooling cylinder. By adjusting the water inlet and water flow rate of the cooling liquid circuit, heat regulation can be achieved to avoid excessive heat affecting the product molding quality.

[0040] Such arrangement makes each cooling chamber 132 separated from each other, and the water inlet 111 and the water outlet 112 are arranged on opposite sides of the hot nozzle cooling barrel, and each is arranged toward one or two cooling chambers 132. When the coolant is injected through the water inlet 111, the coolant first enters the cooling chamber 132 corresponding to the water inlet 111, then flows into the diversion chamber from the cooling chamber 132, and finally is diverted from the diversion chamber to the remaining cooling chambers 132, and the coolant after absorbing heat flows out from the cooling chamber 132 and the water outlet 112 on the other side. In this way, the water flow path between the water inlet 111 and the water outlet 112 is longer, which increases the retention time of the coolant at the hot nozzle cooling barrel, allowing the coolant to have enough time to absorb the heat on the hot nozzle, thereby improving the cooling efficiency. In addition, this also makes the water temperature of the coolant entering each cooling chamber 132 from the diversion chamber closer, so that the heat dissipation around the hot nozzle cooling barrel is more uniform, which is conducive to improving the heat dissipation effect. Optionally, a plurality of water retaining portions 125 are evenly spaced and distributed in the circumferential direction of the inner cylinder 12 so that the sizes of the cooling chambers 132 are comparable, the heat dissipation effect is uniform, and molding is also facilitated.

[0041] Of course, in other embodiments, multiple cooling chambers 132 may be connected in sequence in a chain, and the cooling chamber 132 at the first section is connected to the water inlet 111, and the cooling chamber 132 at the tail end is connected to the water outlet 112, so that the coolant flows through all cooling chambers 132 in sequence and then flows out from the water outlet 112. Alternatively, multiple cooling chambers 132 are connected end to end in sequence, and the two ports of each cooling chamber 132 are staggered, and the water inlet 111 and the water outlet 112 are arranged on opposite sides of the mounting hole 21, so that the coolant entering from the water inlet 111 flows to the water outlet 112 in two ways. In addition, in other embodiments, an annular groove may be provided on the outer circumference of the cylinder, and the annular groove and the hole wall of the mounting hole 21 enclose the cooling chamber 132. Or the outer circumference of the cylinder is spaced from the hole wall of the mounting hole 21 to form the cooling chamber 132.

[0042] In some embodiments, the inner wall surface of the outer sleeve 11 is a revolving surface, so that the outer sleeve 11 can rotate relative to the inner cylinder 12. This makes it easy to rotate the outer sleeve 11 to adjust the position so that the water inlet 111 and the water outlet 112 are arranged toward one cooling chamber 132 or toward two cooling chambers 132 (i.e., corresponding to the water retaining portion 125 located between the two cooling chambers 132).

[0043] The utility model also proposes an injection mold, which includes a mold body 20, a hot nozzle and a hot nozzle cooling water jacket 10. The specific structure of the hot nozzle cooling water jacket 10 refers to the above embodiment. Since the injection mold adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. Among them, the mold body 20 is provided with a water inlet channel 22, a drainage channel 23 and a mounting hole 21. The water inlet channel 22 and the drainage channel 23 both penetrate the inner wall surface of the mounting hole 21. The mounting hole 21 is connected to the mold cavity of the mold body 20. The hot nozzle cooling water jacket 10 is installed in the mounting hole 21, and a second cooling cavity 14 is formed between the outer sleeve 11 of the hot nozzle cooling water jacket 10 and the hole wall of the mounting hole 21. The hot nozzle is installed in the inner cylinder 12 of the hot nozzle cooling water jacket 10.

[0044] Specifically, the mold body 20 includes a movable mold part and a fixed mold part, which together enclose a cavity. The fixed mold part is provided with a mounting hole 21, a water inlet channel 22 and a drainage channel 23, that is, the hot nozzle and the hot nozzle cooling water jacket 10 are installed on the fixed mold part.

[0045] Optionally, the water inlet channel 22 and the drainage channel 23 are arranged on opposite sides of the mounting hole 21, the water inlet channel 22 corresponds to the water inlet 111 on the hot nozzle cooling jacket, and the drainage channel 23 corresponds to the water outlet 112 of the hot nozzle cooling water jacket 10. In this way, the flow rate of the coolant can be increased and the heat dissipation effect can be improved.

[0046] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A hot nozzle cooling water jacket for an injection mold, wherein the injection mold is provided with a water inlet channel, a drainage channel and a mounting hole, wherein the water inlet channel and the drainage channel both penetrate the inner wall surface of the mounting hole, and the mounting hole is connected to the cavity of the injection mold, characterized in that: The hot nozzle cooling water jacket comprises: An outer sleeve, wherein a water inlet and a water outlet are provided on a peripheral wall of the outer sleeve, wherein the water inlet and the water outlet are spaced apart in the circumferential direction of the outer sleeve and both penetrate the inner wall surface of the outer sleeve; and The inner cylinder is detachably installed in the outer sleeve, a first cooling cavity is formed between the inner cylinder and the outer sleeve, the water inlet and the water outlet are both connected to the first cooling cavity, the inner cylinder is used to be sleeved outside the hot nozzle, when the hot nozzle cooling water sleeve is inserted into the mounting hole, a second cooling cavity is formed between the outer sleeve and the hole wall of the mounting hole.

2. The hot nozzle cooling water jacket according to claim 1, characterized in that: The water inlet and the water outlet are arranged opposite to each other.

3. The hot nozzle cooling water jacket according to claim 2, characterized in that: The water inlet and the water outlet are both in the shape of long strips extending axially along the outer sleeve.

4. The hot nozzle cooling water jacket according to claim 1, characterized in that: The inner cylinder includes a cylinder portion and a fixed flange connected to one end of the cylinder portion, a gate portion is protruding from one end of the cylinder portion away from the fixed flange, the outer sleeve is sleeved outside the cylinder portion and abuts against the fixed flange, the first cooling cavity is formed between the outer sleeve and the cylinder portion, and the gate portion is adapted to be embedded in the inner hole of the end of the outer sleeve away from the fixed flange.

5. The hot nozzle cooling water jacket according to claim 4, characterized in that: A first annular groove is provided on the surface of the fixing flange facing the cylindrical body, and the first annular groove is arranged around the cylindrical body. A second annular groove is provided on the outer peripheral surface of the outer sleeve, and the water inlet and the water outlet are both located between the second annular groove and the first annular groove, and the first annular groove and the second annular groove are both used for the installation of a sealing ring.

6. The hot nozzle cooling water jacket according to claim 1, characterized in that: The peripheral wall of the outer sleeve is provided with a locking screw hole, and the locking screw hole penetrates the inner wall surface of the outer sleeve so that a screw can be used to abut against the inner cylinder body through the locking screw hole.

7. The hot nozzle cooling water jacket according to any one of claims 1 to 6, characterized in that: The inner cylinder has a gate end, the first cooling cavity includes a confluence cavity and a plurality of cooling cavities, the confluence cavity, the confluence cavity is located at the gate end, the plurality of cooling cavities are distributed at intervals along the circumference of the inner cylinder, and are all connected to the gate end, the water inlet is arranged corresponding to one or two of the cooling cavities, and the water outlet is arranged corresponding to the other one or two of the cooling cavities.

8. The hot nozzle cooling water jacket according to claim 7, characterized in that: The inner wall surface of the outer sleeve is a rotating surface, so that the outer sleeve can rotate relative to the inner cylinder.

9. An injection mold, characterized in that: The invention comprises a mold body, a hot nozzle and a hot nozzle cooling water jacket as claimed in any one of claims 1 to 8, wherein the mold body is provided with a water inlet channel, a drainage channel and a mounting hole, the water inlet channel and the drainage channel both pass through the inner wall surface of the mounting hole, the mounting hole is communicated with the cavity of the mold body, the hot nozzle cooling water jacket is installed in the mounting hole, and a second cooling cavity is formed between the outer sleeve of the hot nozzle cooling water jacket and the hole wall of the mounting hole, and the hot nozzle is installed in the inner cylinder of the hot nozzle cooling water jacket.

10. The injection mold according to claim 9, characterized in that: The water inlet channel and the drainage channel are arranged on opposite sides of the mounting hole, the water inlet channel corresponds to the water inlet on the hot nozzle cooling jacket, and the drainage channel corresponds to the water outlet of the hot nozzle cooling water jacket.

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