Rapid plastic injection mold

Abstract

The utility model belongs to the technical field of silica gel injection molds, and particularly relates to a rapid plastic injection mold which comprises a mold main body, the mold main body comprises a movable module and a fixed module; the movable die set and the fixed die set can be attached to each other to define a die cavity. The movable module is provided with a mounting groove penetrating from the top to the bottom, and a drainage piece is arranged in the mounting groove; the drainage piece is provided with a drainage channel which is used for enabling plastic liquid to enter the mold cavity from the outside of the mold main body; a heat insulation sleeve is clamped between the outer side wall of the drainage piece and the inner side wall of the mounting groove, so that heat on the drainage piece does not easily enter the movable module and then enter the mold cavity, and the condensation speed of plastic liquid in the mold cavity is increased; the heat transfer between the drainage piece and the mold cavity is reduced through the heat insulation sleeve, so that the injection molding of plastic liquid is accelerated, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of silicone injection molds, in particular to a plastic rapid injection mold. Background Art

[0002] People often use molds to make plastic products. When using them, the silicone raw material is heated and melted, and the liquid silicone passes through the injection port into the mold. Then, the internal plastic liquid is cooled and shaped by low temperature to obtain plastic products. When the plastic liquid passes through the injection port, it must be kept in a liquid state to reduce the blockage of the injection port caused by the solidification of the plastic liquid.

[0003] For example, Chinese utility model patent CN219855778U discloses a plastic injection port device for preventing blockage, wherein a pipe A and a pipe B are arranged in the injection hole; the bottom of pipe A passes through the injection hole and extends to the bottom of the mold body, and a plurality of discharge ports A are provided at the bottom of pipe A; a plurality of heating wires are provided inside pipe A, and a heating plate is provided at the bottom of pipe A, and a plurality of discharge ports B are provided on the outer side of pipe B near the bottom; pipe A and pipe B can be pulled out from the inside of the injection hole by pulling upward, and the residual material at the bottom of pipe A is cut off by the contact point between discharge port A and the injection hole to prevent the material from sticking to the outside of pipe A; when the outside temperature is low, pipe A is heated by the heating plate and the heating wire to prevent the plastic stock solution inside pipe A from solidifying rapidly and causing the material port to be blocked, and pipe A is heated and melted by the residual plastic stock solution from the previous processing, so as to prevent the discharge ports A and B from being blocked and unable to feed.

[0004] However, in the above utility model patent and the silicone mold in the prior art, the heating state of the injection port and the condensation state inside the mold are likely to affect each other. The heat on the injection port will be transferred to the plastic product through the mold core, prolonging the condensation time of the plastic product and reducing work efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a plastic rapid injection mold, aiming to solve the technical problem in the prior art that "the heating state of the injection port and the condensation state inside the mold are likely to affect each other, and the heat on the injection port will be transferred to the plastic product through the mold core, which will prolong the condensation time of the plastic product and reduce work efficiency."

[0006] To achieve the above-mentioned purpose, an embodiment of the utility model provides a plastic rapid injection mold, including a mold body; the mold body includes a movable mold group and a fixed mold group; the movable mold group and the fixed mold group can be fitted together to form a mold cavity; the movable mold group is provided with an installation groove extending from the top to the bottom thereof, and a drainage piece is provided in the installation groove; the drainage piece is provided with a drainage channel, and the drainage channel is used to allow plastic liquid to enter the mold cavity from the outside of the mold body; an insulating sleeve is sandwiched between the outer wall of the drainage piece and the inner wall of the installation groove.

[0007] Optionally, the movable mold assembly includes a movable mold base, a movable mold fixing part, and a movable mold core connected in sequence; the guide part includes a feed part, a guide part, and a discharge part connected in sequence; the feed part, the guide part, and the discharge part are respectively correspondingly arranged on the movable mold base, the movable mold fixing part, and the movable mold core; and the heat insulation sleeve is arranged on the outside of the guide part and the discharge part.

[0008] Optionally, the heat insulation sleeve and the guide piece, and the heat insulation sleeve and the mounting groove are detachably connected.

[0009] Optionally, the inner side wall of the installation groove is provided with a second clamping groove, the outer side wall of the heat insulation sleeve is provided with a second clamping piece, and the second clamping piece is adapted to be clamped with the second clamping groove.

[0010] Optionally, the top end of the feed portion extends to the top of the movable mold base; the feed portion is provided with a reinforcement ring on the top surface of the movable mold base.

[0011] Optionally, the outer wall of the guide piece is provided with a first card slot, the inner wall of the heat insulation sleeve is provided with a first card member, and the first card member is adapted to be card-engaged with the first card slot.

[0012] Optionally, the thermal insulation sleeve includes a heat absorbing layer arranged on the inner layer and a thermal insulation layer arranged on the outer layer.

[0013] Optionally, the heat insulation sleeve is formed by connecting a first set and a second set; a positioning structure is provided between the first set and the second set, and the positioning structure is used to facilitate the connection between the two sets.

[0014] Optionally, the positioning structure includes a positioning protrusion and a positioning groove; the positioning protrusion and the positioning groove are adapted to be plugged in.

[0015] Compared with the prior art, the above one or more technical solutions in the plastic rapid injection mold provided by the embodiment of the utility model have at least one of the following technical effects: the movable mold group is provided with an installation groove, a guide piece is provided in the installation groove, the guide piece is provided with a guide channel, the plastic liquid enters the guide channel from the outside of the mold body, and then flows into the mold cavity to be further condensed into a plastic product; an insulating sleeve is provided between the installation groove and the guide piece, and the insulating sleeve is used to separate the guide piece from the movable mold group to increase the heat on the guide piece. It is not easy to enter the movable mold group and then enter the mold cavity, so as to shorten the condensation speed of the plastic liquid in the mold cavity; the utility model reduces the heat transfer between the guide piece and the mold cavity through the insulating sleeve to accelerate the injection molding of the plastic liquid and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a three-dimensional cutaway view of the utility model.

[0019] Figure 3 It is a three-dimensional cutaway view of the drainage piece.

[0020] Figure 4 for Figure 2 Enlarged schematic diagram of circle A in the middle.

[0021] Figure 5 It is a top view of the utility model.

[0022] Figure 6 For along Figure 5 Sectional view along line AA.

[0023] Figure 7 A top view of the thermal insulation sleeve.

[0024] Figure 8 This is a cutaway view of the insulation sleeve.

[0025] Among them, the reference numerals in the figure are:

[0026] 1. Mold body; 2. Moving mold group; 3. Fixed mold group; 4. Mold cavity; 5. Drainage piece; 6. Heat insulation sleeve;

[0027] 21. movable mold seat; 22. movable mold fixing piece; 23. movable mold core; 24. mounting slot; 241. second slot;

[0028] 51. feeding part; 511. reinforcing ring; 52. flow guide part; 53. discharging part; 54. drainage channel; 551. first card slot;

[0029] 611, first clamp; 612, second clamp; 621, heat absorption layer; 622, heat insulation layer; 63, first set; 64, second set; 65, positioning structure; 651, protrusion; 652, positioning groove. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0033] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0034] In one embodiment of the present invention, a plastic rapid injection mold is provided for injection molding a plastic liquid into a plastic product, referring to Figure 1 and Figure 2 , including a mold body 1; the mold body 1 includes a movable mold group 2 and a fixed mold group 3; the movable mold group 2 and the fixed mold group 3 can be fitted together to enclose a mold cavity 4.

[0035] Furthermore, the movable mold assembly 2 is provided with a mounting groove 24 extending from the top to the bottom thereof, and a drainage member 5 is provided in the mounting groove 24 ; the drainage member 5 is provided with a drainage channel 54 , and the drainage channel 54 is used to allow the plastic liquid to enter the mold cavity 4 from the outside of the mold body 1 .

[0036] Furthermore, a heat insulating sleeve 6 is sandwiched between the outer wall of the flow guiding member 5 and the inner wall of the mounting groove 24 .

[0037] Among them, the fixed mold group 3 is fixed below the movable mold group 2, and the movable mold group 2 can be close to or away from the fixed mold group 3; when the movable mold group 2 is close to the fixed mold group 3, the sides of the two that are close to each other jointly form the mold cavity 4; the plastic liquid condenses in the mold cavity 4 to form a plastic product; when the movable mold group 2 is away from the fixed mold group 3, the plastic product can be separated from the mold cavity 4 to enter the next process; the top end of the drainage channel 54 extends to the top of the drainage member 5 to communicate with the outside, and the bottom end of the drainage channel 54 extends to the bottom of the drainage member 5 to communicate with the mold cavity 4, so that the mold cavity 4 can be connected with the outside of the mold body 1 through the drainage channel 54, which is convenient for the injection of plastic liquid; a gap is formed between the outer wall of the drainage member 5 and the inner wall of the mounting groove 24, and the insulation sleeve 6 is arranged in the gap, so that the drainage member 5 and the mounting groove 24 can cooperate with each other to clamp the insulation sleeve 6 to fix the insulation sleeve 6.

[0038] Compared with the prior art, the above one or more technical solutions in the plastic rapid injection mold provided by the embodiment of the utility model have at least one of the following technical effects:

[0039] The movable mold assembly 2 is provided with a mounting groove 24, and a guide piece 5 is provided in the mounting groove 24. The guide piece 5 is provided with a guide channel 54. The plastic liquid enters the guide channel 54 from the outside of the mold body 1, and then flows into the mold cavity 4 to be further condensed into a plastic product; a heat insulation sleeve 6 is provided between the mounting groove 24 and the guide piece 5, and the heat insulation sleeve 6 is used to separate the guide piece 5 from the movable mold assembly 2, so that the heat on the guide piece 5 is not easy to enter the movable mold assembly 2 and then enter the mold cavity 4, so as to increase the condensation speed of the plastic liquid in the mold cavity 4; in addition, when the plastic liquid in the mold cavity 4 is condensed, the plastic liquid inside the guide channel 54 is not easy to condense together, so as to speed up the rate of the next injection of the plastic liquid; the utility model reduces the heat transfer between the guide piece 5 and the mold cavity 4 through the heat insulation sleeve 6, so as to speed up the injection molding of the plastic liquid and improve the work efficiency.

[0040] In one embodiment of the present invention, reference Figure 2 and Figure 3The movable mold assembly 2 includes a movable mold seat 21, a movable mold fixing member 22, and a movable mold core 23 connected in sequence; wherein the movable mold seat 21 can be connected to other fixing devices to fix the movable mold assembly 2, the movable mold core 23 is used to cooperate with the fixed mold assembly 3 to form a mold cavity 4 to form a plastic product, and the movable mold fixing member 22 is used to fix the movable mold core 23 to the movable mold seat 21; the mounting groove 24 sequentially penetrates the movable mold seat 21, the movable mold fixing member 22, and the movable mold core 23; the guide member 5 includes a feed portion 51, a guide portion 52, and a discharge portion 53 connected in sequence; wherein the feed portion 51 is used to be connected to a feed pipe outside the mold body 1 to facilitate the injection of plastic liquid, and the discharge portion 53 is used to communicate with the mold cavity 4 to facilitate When the plastic liquid is positioned to flow into the mold cavity 4, the guide portion 52 is used to guide the plastic liquid to flow from the feed portion 51 to the discharge portion 53; the drainage channel 54 sequentially penetrates the feed portion 51, the guide portion 52, and the discharge portion 53 to achieve the drainage of the plastic liquid by the guide member 5; the feed portion 51, the guide portion 52, and the discharge portion 53 are respectively correspondingly arranged on the movable mold seat 21, the movable mold fixing member 22, and the movable mold core 23; the heat insulation sleeve 6 is arranged on the outside of the guide portion 52 and the discharge portion 53 to concentrate on isolating the heat transfer between the guide portion 52 and the movable mold fixing member 22, and between the discharge portion 53 and the movable mold core 23, so as to improve the utilization rate of the heat insulation sleeve 6 and reduce the waste of resources caused by useless structures or low-efficiency structures.

[0041] In one embodiment of the present invention, reference Figure 2 The heat insulation sleeve 6 and the drainage member 5, and the heat insulation sleeve 6 and the mounting groove 24 are detachably connected; wherein the movable mold base 21, the movable mold fixing member 22, and the movable mold core 23 are connected by a longitudinally arranged fixed shaft (not shown in the figure), and the fixed shaft is provided with fixed limit members at the top of the movable mold base 21 and the bottom of the movable mold core 23, and the fixed shaft and the fixed limit members are detachably connected by a threaded connection or a clamping connection. The movable mold base 21, the movable mold fixing member 22, and the movable mold core 23 can be separated from each other by removing the fixed limit members, and after separation, the movable mold base 21, the movable mold fixing member 22, and the movable mold core 23 can be separated from each other. The integral body formed by the drainage piece 5 and the heat-insulating sleeve 6 is taken out from the installation groove 24 to facilitate the maintenance and replacement of the drainage piece 5 and the heat-insulating sleeve 6; the heat-insulating sleeve 6 can be put on the outside of the drainage piece 5 by direct contact, and can also be connected to the drainage piece 5 by snap-on connection; when the integral body formed by the heat-insulating sleeve 6 and the drainage piece 5 is installed inside the installation groove 24, the inner side wall of the installation groove 24 and the outer side wall of the drainage piece 5 jointly clamp the heat-insulating sleeve 6, so that the heat-insulating sleeve 6 is firmly connected, and the position of the drainage piece 5 in the installation groove 24 is stable and not prone to shaking.

[0042] Further, refer to Figure 4A second card slot 241 is provided on the inner side wall of the mounting groove 24, and a second card member 612 is provided on the outer side wall of the heat insulating sleeve 6, and the second card member 612 is adapted to be engaged with the second card slot 241; the shape of the second card member 612 can be set to be cylindrical, boss-shaped, or other shapes, and the shape of the second card slot 241 corresponds thereto; the number of second card members 612 depends on the size and shape of the guide member 5. In some embodiments, when the size of the guide member 5 is larger and has two or more discharge parts 53, a plurality of second card members 612 can be provided to improve the stability of the connection between the heat insulating sleeve 6 and the mounting groove 24.

[0043] In one embodiment of the present invention, reference Figure 6 The top of the feed part 51 extends to the top of the movable mold base 21; the feed part 51 is provided with a reinforcement ring 511 on the top surface of the movable mold base 21, and the reinforcement ring 511 is used to strengthen the connection between the feed part 51 and the movable mold base 21, so that the feed part 51 is not easy to shake in the mounting groove 24, so as to facilitate the connection between the feed part 51 and the feed pipe outside the mold body 1, so that the injection of plastic liquid is smoother.

[0044] In one embodiment of the present invention, reference Figure 3 The outer wall of the drainage piece 5 is provided with a first card slot 551, and the inner wall of the heat insulating sleeve 6 is provided with a first card member 611, and the first card member 611 is adapted to be snap-connected with the first card slot 551; the snap connection is a detachable snap connection, so as to separate the heat insulating sleeve 6 from the drainage piece 5, thereby maintaining or replacing the heat insulating sleeve 6; of course, in other embodiments, the first card slot 551 can be provided on the inner wall of the heat insulating sleeve 6, and the first card slot 551 can be provided on the outer wall of the drainage piece 5, which can also make the drainage piece 5 and the heat insulating sleeve 6 detachable and snap-connected.

[0045] In one embodiment of the present invention, reference Figure 8 The heat-insulating sleeve 6 includes a heat-absorbing layer 621 arranged on the inner layer and a heat-insulating layer 622 arranged on the outer layer; the heat-absorbing layer 621 is close to the outer wall of the guide piece 5 to absorb the heat transferred from the guide piece 5, and metals such as aluminum and steel can be used; the heat-insulating layer 622 is close to the inner wall of the mounting groove 24 to reduce the heat transfer between the guide piece 5 and the movable module 2, and glass wool, rock wool, etc. can be used; the heat-absorbing layer 621 and the heat-insulating layer 622 cooperate with each other, so that most of the heat of the guide piece 5 can be limited to the space wrapped by the heat-insulating sleeve 6, so as to keep the guide piece 5 warm, so that the plastic liquid in the drainage channel 54 is not easy to cool and solidify to form a blockage.

[0046] In one embodiment of the present invention, reference Figure 7 The heat insulating sleeve 6 is formed by connecting a first set 63 and a second set 64. By separating the first set 63 from the second set 64, the heat insulating sleeve 6 can be separated from the drainage piece 5, so that the heat insulating sleeve 6 can be removed from the drainage piece 5 for maintenance or replacement.

[0047] Furthermore, a positioning structure 65 is provided between the first set 63 and the second set 64 , and the positioning structure 65 is used to facilitate the connection between the two sets.

[0048] Furthermore, the positioning structure 65 includes a positioning protrusion 651 and a positioning groove 652; the positioning protrusion 651 and the positioning groove 652 are adapted to be plugged in; the positioning protrusion 651 and the positioning groove 652 are respectively correspondingly arranged on the first kit 63 and the second kit 64, and their specific positions can be set as needed, such as the positioning protrusion 651 is arranged on the first kit 63, and the positioning groove 652 is arranged on the second kit 64; or the first kit 63 is provided with a positioning protrusion 651 and a positioning groove 652 at the same time, and the second kit 64 is also provided with a positioning protrusion 651 and a positioning groove 652 at the same time, and the positioning protrusion 651 and the positioning groove 652 between the two kits are connected one by one.

[0049] The rest of this embodiment is the same as the first embodiment. The features not explained in this embodiment are all based on the explanations in the first embodiment and will not be described in detail here.

[0050] The above content is a further detailed description of the utility model in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, its architecture can be flexible and can derive a series of products. Just making a few simple deductions or substitutions should be regarded as belonging to the patent protection scope of the utility model determined by the submitted claims.

Claims

1. A plastic rapid injection mold, comprising a mold body (1); the mold body (1) comprises a movable mold group (2) and a fixed mold group (3); the movable mold group (2) and the fixed mold group (3) can be attached to each other to enclose a mold cavity (4); characterized in that: The movable mold assembly (2) is provided with a mounting groove (24) extending from the top to the bottom thereof, and a flow guide member (5) is provided in the mounting groove (24); the flow guide member (5) is provided with a flow guide channel (54), and the flow guide channel (54) is used to allow plastic liquid to enter the mold cavity (4) from the outside of the mold body (1); and a heat insulation sleeve (6) is sandwiched between the outer wall of the flow guide member (5) and the inner wall of the mounting groove (24).

2. The plastic rapid injection mold according to claim 1, characterized in that: The movable mold assembly (2) comprises a movable mold base (21), a movable mold fixing member (22), and a movable mold core (23) which are connected in sequence; the flow guide member (5) comprises a feed portion (51), a flow guide portion (52), and a discharge portion (53) which are connected in sequence; the feed portion (51), the flow guide portion (52), and the discharge portion (53) are respectively arranged on the movable mold base (21), the movable mold fixing member (22), and the movable mold core (23); and the heat insulation sleeve (6) is arranged on the outer sides of the flow guide portion (52) and the discharge portion (53).

3. The plastic rapid injection mold according to claim 2, characterized in that: The heat insulation sleeve (6) and the flow guide member (5), and the heat insulation sleeve (6) and the installation groove (24) are detachably connected.

4. The plastic rapid injection mold according to claim 2, characterized in that: The inner side wall of the installation groove (24) is provided with a second clamping groove (241), and the outer side wall of the heat insulation sleeve (6) is provided with a second clamping piece (612), and the second clamping piece (612) is adapted to be clamped with the second clamping groove (241).

5. The plastic rapid injection mold according to claim 2, characterized in that: The top end of the feed portion (51) extends to the top of the movable die seat (21); the feed portion (51) is provided with a reinforcement ring (511) on the top surface of the movable die seat (21).

6. The plastic rapid injection mold according to any one of claims 1 to 5, characterized in that: The outer wall of the flow guide member (5) is provided with a first clamping groove (551), and the inner wall of the heat insulation sleeve (6) is provided with a first clamping member (611), and the first clamping member (611) is adapted to be clamped with the first clamping groove (551).

7. The plastic rapid injection mold according to any one of claims 1 to 5, characterized in that: The heat insulating sleeve (6) comprises a heat absorbing layer (621) arranged on an inner layer and a heat insulating layer (622) arranged on an outer layer.

8. The plastic rapid injection mold according to any one of claims 1 to 5, characterized in that: The heat insulation sleeve (6) is formed by connecting a first sleeve (63) and a second sleeve (64).

9. The plastic rapid injection mold according to claim 8, characterized in that: A positioning structure (65) is provided between the first set (63) and the second set (64), and the positioning structure (65) is used to facilitate the connection between the two sets.

10. The plastic rapid injection mold according to claim 9, characterized in that: The positioning structure (65) comprises a positioning protrusion (651) and a positioning groove (652); the positioning protrusion (651) and the positioning groove (652) are adapted to be plugged in.

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