A water-cooled liquid silicone screw barrel device

Abstract

The present invention discloses a water-cooled liquid silicone screw barrel device, which includes a first nozzle, a second nozzle, a flange and a barrel that are arranged in sequence and have hollow cavities; it also includes a glue-sealing assembly arranged in the piston chamber of the second nozzle, wherein: the glue-sealing assembly is a piston structure composed of a glue-sealing valve core, a baffle and two valve core fixing seats respectively arranged on both sides of the baffle; the glue-sealing valve core and the baffle fixed thereon can move left and right relative to the two valve core fixing seats in the piston chamber under the action of a gas source to open or close the inner orifice of the nozzle for injecting glue. The water-cooled liquid silicone screw barrel device provided by the present invention, by adding a pneumatic or hydraulic glue-sealing device in the second nozzle, not only solves the problem of easy overflow of materials at the gate position, but also effectively solves the problem that the silicone at the nozzle mouth is easily cured at the mold gate position.

Description

Technical Field

[0001] The present invention belongs to the technical field of injection molding, and relates to a screw injection molding machine, in particular to a water-cooled liquid silicone screw barrel device. Background Art

[0002] Nowadays, the injection molding industry is mainly divided into two categories: one is thermoplastic plastics, and the other is thermosetting plastics. Thermoplastic plastics are the most common and widely used. Among thermosetting plastics, there is also a widely used one, commonly known as silicone. Silicone products are widely used in the baby products industry and the medical industry. Silicone products have many characteristics that other plastics do not have, such as non-toxicity, transparency, and high temperature resistance.

[0003] At present, the requirements for silicone molding technology are also gradually increasing. Silicone molding generally involves A glue and B glue. When the two glues are stored separately, they are always in a liquid state. However, when A and B are mixed, a chemical reaction will occur and the temperature will rise. Since silicone is a thermosetting plastic, the silicone will solidify and cannot flow after the temperature rises. Therefore, when molding silicone, it is necessary to not only overcome the heat generated by its own chemical reaction, but also enable the A and B glues to be fully fused to meet the requirements of the desired product. Summary of the Invention

[0004] In order to solve the defect in the prior art that the silicone solidifies and cannot flow due to the temperature rise after the mixing of A and B, the present invention proposes a water-cooled liquid silicone screw barrel device.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides a water-cooled liquid silicone screw barrel device, which includes a first nozzle, a second nozzle, a flange, and a barrel that are sequentially arranged and have a hollow cavity; it also includes a sealant assembly disposed in the piston chamber of the second nozzle, wherein:

[0007] The sealant assembly is a piston structure composed of a sealant valve core, a retaining piece, and two valve core fixing seats respectively arranged on both sides of the retaining piece;

[0008] The sealant valve core and the retaining piece fixed thereto can move left and right relative to the two valve core fixing seats in the piston chamber under the action of a pressure air source to open or close the inner opening of the nozzle for injecting glue.

[0009] Further, on the water-cooled liquid silicone screw barrel device, wherein:

[0010] The side wall of the second nozzle is sequentially provided with a first driving hole and a second driving hole from left to right, and the first driving hole and the second driving hole are respectively arranged corresponding to the two valve core fixing seats;

[0011] The glue-sealing valve core has a head-end valve core for closing or opening the nozzle inner opening of the sub-nozzle and a rear-end valve core with a valve core inner hole; the diameter of the front end of the rear-end valve core gradually decreases to a straight section, and at least two material holes communicating with the valve core inner hole are provided on the surface of its front end along the circumferential direction; the discharge ports of the material holes can communicate with the nozzle inner opening, and the feed ports can communicate with the feeding cavity of the material pipe through the valve core inner hole;

[0012] The baffle is fixedly installed at the tail end of the glue-sealing valve core, and its outer edge is hermetically connected to the side wall of the piston chamber; and

[0013] The two valve core fixing seats are respectively symmetrically fixed on the mother nozzle and the flange, and are sleeved on the tail end of the glue-sealing valve core;

[0014] A pressure air source is filled into the piston chambers on both sides of the baffle through the first driving hole or the second driving hole to drive the baffle and the glue-sealing valve core to move left and right, so as to open or close the nozzle inner opening for injecting glue.

[0015] Furthermore, on the water-cooled liquid silicone rubber screw material pipe device, it further includes:

[0016] A nozzle sleeve with a hollow cavity, the front end and the rear end of which are respectively hermetically sleeved on the mother nozzle;

[0017] Wherein, a first cooling water channel is formed in the sealed cavity between the inner side wall and the outer side wall of the nozzle sleeve, and a first water inlet and a first water outlet communicating with the first cooling water channel are provided on the nozzle sleeve.

[0018] Furthermore, on the water-cooled liquid silicone rubber screw material pipe device, sealing grooves are provided on the inner side walls at the front and rear ends of the nozzle sleeve, and the first water inlet and the first water outlet are arranged diagonally.

[0019] Furthermore, on the water-cooled liquid silicone rubber screw material pipe device, a second cooling water channel is spirally arranged along the circumferential direction of the feeding cavity at the front end of the material pipe, and the second water inlet and the second water outlet of the second cooling water channel are arranged diagonally.

[0020] Furthermore, on the water-cooled liquid silicone rubber screw material pipe device, a feeding port communicating with the feeding cavity is provided in the middle of the material pipe, and an installation nut is detachably installed at the rear end.

[0021] Furthermore, on the water-cooled liquid silicone rubber screw material pipe device, it further includes:

[0022] A screw assembly arranged in the feeding cavity of the material pipe, which includes a screw head assembly and a screw body; wherein:

[0023] The screw head assembly includes a screw head, a compression spring, a check ring, and a spacer sleeved on the screw head in sequence. At least one spacer hole is formed in the circumferential direction of the spacer; and

[0024] The screw body sequentially includes a first mixing section, a second mixing section, a third mixing section, a feeding section, a sealing groove, and a transmission key groove from left to right. The first mixing section is detachably connected to the screw head.

[0025] Further, on the water-cooled liquid silicone screw and barrel device, the flange has a flange channel. The feeding port at the rear end of the flange channel is in a flared shape, and the discharging port at the front end of the flange channel is in a stepped shape with a continuously increasing diameter.

[0026] Further, on the water-cooled liquid silicone screw and barrel device, the sealant valve core further includes:

[0027] A first transition section and a second transition section sequentially arranged between the head end valve core and the rear end valve core. The first transition section is smoothly connected to the head end valve core, and the second transition section is smoothly connected to the rear end valve core; and

[0028] At least two limiting protrusions are arranged in the middle of the rear end valve core, and the limiting protrusions are sequentially arranged along the outer circumferential surface thereof.

[0029] Further, on the water-cooled liquid silicone screw and barrel device, first and second convex rings that cooperate with the valve core fixing seat are respectively arranged on both sides of the retaining piece. At least two card slots corresponding to the limiting protrusions are formed on the first convex ring; a sealing groove is formed on the outer circumferential end surface of the retaining piece.

[0030] Further, on the water-cooled liquid silicone screw and barrel device, at least one sealing groove is formed on both the inner side wall and the outer side wall of the hollow cavity of the valve core fixing seat.

[0031] Adopting the above technical solutions, compared with the prior art, the present invention has the following technical effects:

[0032] (1) The water-cooled liquid silicone screw and barrel device provided by the present invention replaces the traditional heating-type screw and barrel group, cancels the heating device, saves the heating coil, temperature sensing wire, and the temperature control module of the machine, and greatly reduces the risk of deformation and friction of the screw and barrel at high temperatures;

[0033] (2) The water-cooled liquid silicone screw and barrel device provided by the present invention is provided with a pneumatic sealant device, which not only solves the problem of easy overflow of the sprue position, but also effectively solves the problem that the silicone in the inner mouth of the nozzle is easily cured at the mold sprue position;

[0034] (3) The water-cooled liquid silicone screw barrel device provided by the present invention designs an overall cooling water circulation structure, which can keep the water temperature constant under the control of special equipment, making the production more stable.

[0035] (4) The water-cooled liquid silicone screw barrel device provided by the present invention has a specially designed screw, which can fully blend the AB glue, thus meeting the requirements of the product. Brief Description of the Drawings

[0036] Figure 1 It is a schematic structural diagram of the water-cooled liquid silicone screw barrel device of the present invention in a closed state;

[0037] Figure 2 is Figure 1 a schematic overall assembly structural diagram of the water-cooled liquid silicone screw barrel device shown;

[0038] Figure 3 is Figure 1 a schematic structural diagram of the screw head assembly in the water-cooled liquid silicone screw barrel device shown;

[0039] Figure 4 is Figure 1 a schematic structural diagram of the screw body in the water-cooled liquid silicone screw barrel device shown;

[0040] Figure 5 is Figure 1 a schematic structural diagram of the barrel in the water-cooled liquid silicone screw barrel device shown;

[0041] Figure 6 is Figure 1 a schematic structural diagram of the sealant assembly in the water-cooled liquid silicone screw barrel device shown;

[0042] Figure 7 and Figure 8 are respectively Figure 1 the sectional view and side view structural diagrams of the sub-nozzle in the water-cooled liquid silicone screw barrel device shown;

[0043] Figure 9 and Figure 10 are respectively Figure 1 the side view and sectional view structural diagrams of the nozzle sleeve in the water-cooled liquid silicone screw barrel device shown;

[0044] Figure 11 and Figure 12 are respectively Figure 1 the side view and sectional view structural diagrams of the female nozzle in the water-cooled liquid silicone screw barrel device shown;

[0045] Figure 13 and Figure 14 are respectively Figure 1Schematic diagram of the sectional view and side view of the flange in the shown water-cooled liquid silicone screw barrel device;

[0046] Figure 15 and Figure 16 are respectively Figure 1 Schematic diagram of the sectional view and side view of the sealant valve core in the shown water-cooled liquid silicone screw barrel device;

[0047] Figure 17 and Figure 18 are respectively Figure 1 Schematic diagram of the side view and sectional view of the baffle in the shown water-cooled liquid silicone screw barrel device;

[0048] Figure 19 is Figure 1 Schematic diagram of the assembly structure of the sealant valve core and the baffle in the shown water-cooled liquid silicone screw barrel device;

[0049] Figure 20 and Figure 21 are respectively Figure 1 Schematic diagram of the sectional view and side view of the valve core fixing seat piece in the shown water-cooled liquid silicone screw barrel device;

[0050] Figure 22 and Figure 23 are respectively Figure 1 Schematic diagram of the sectional view and side view of the mounting nut in the shown water-cooled liquid silicone screw barrel device;

[0051] Figure 24 、 Figure 25 、 Figure 26 and Figure 27 are respectively Figure 1 Schematic diagram of the sectional view of the barrel in the shown water-cooled liquid silicone screw barrel device and the sectional structure diagrams at positions A / B / C;

[0052] Figure 28 、 Figure 29 、 Figure 30 、 Figure 31 、 Figure 32 、 Figure 33 、 Figure 34 and Figure 35 are respectively Figure 1 Schematic diagram of the front view of the screw body in the shown water-cooled liquid silicone screw barrel device and the sectional structure diagrams at positions A / B / C / D / X / Y;

[0053] Figure 36 is Figure 1 Schematic diagram of the structure of the shown water-cooled liquid silicone screw barrel device in the open state. Detailed implementation method

[0054] The present invention will be described in detail and specifically through specific embodiments to better understand the present invention. However, the following embodiments do not limit the scope of the present invention.

[0055] Referring to Figure 1 As shown, this embodiment provides a water-cooled liquid silicone screw barrel device, which includes a first nozzle 100 with a hollow cavity, a second nozzle 300, a flange 400, and a barrel 800 arranged in sequence; characterized in that it further includes a sealant assembly disposed in the piston chamber 330 of the second nozzle 300, wherein: the sealant assembly is a piston structure composed of a sealant valve core 500, a baffle 600, and two valve core fixing seats 700 respectively arranged on both sides of the baffle 600; the sealant valve core 500 and the baffle 600 fixed thereon can move left and right relative to the two valve core fixing seats 700 in the piston chamber 330 under the action of a pressure air source to open or close the inner nozzle opening 110 of the nozzle for injecting glue, and high-pressure gas is used as the pressure air source for driving the movement of the piston structure. The water-cooled liquid silicone screw barrel device of this embodiment, by adding a pneumatic or hydraulic sealant device in the second nozzle 300, not only solves the problem of easy overflow of materials at the nozzle position, but also effectively solves the problem that the silicone at the inner nozzle of the nozzle is easily cured at the nozzle position of the mold.

[0056] Referring to Figure 1-2 and Figures 15-19 As shown, as a preferred embodiment, on the water-cooled liquid silicone screw barrel device, wherein: the side wall of the second nozzle 300 is sequentially provided with a first driving hole 310 and a second driving hole 320 from left to right, and the first driving hole 310 and the second driving hole 320 are respectively arranged corresponding to the two valve core fixing seats 700; the sealant valve core 500 has a head end valve core 510 for closing or opening the inner nozzle opening 110 of the first nozzle 100 and a rear end valve core 540 with a valve core inner hole 541; the diameter of the front end of the rear end valve core 540 gradually decreases to a straight section, and at least two material holes 542 communicating with the valve core inner hole 541 are opened on the surface of its front end along the circumferential direction; the discharge port of the material hole 542 can communicate with the inner nozzle opening 110, and the feed port can communicate with the feeding chamber 810 of the barrel 800 through the valve core inner hole 541; the baffle 600 is fixedly installed at the tail end of the sealant valve core 500, and its outer edge is hermetically connected with the side wall of the piston chamber 330; and the two valve core fixing seats 700 are respectively symmetrically fixed on the second nozzle 300 and the flange 400, and are sleeved on the tail end of the sealant valve core 500; by injecting a pressure air source into the piston chamber 330 on both sides of the baffle 600 through the first driving hole 310 or the second driving hole 320, the baffle 600 and the sealant valve core 500 are driven to move left and right to open or close the inner nozzle opening 110 for injecting glue.

[0057] Refer to Figure 1-2 、 Figure 6 and Figures 9-10 As shown in, as a preferred embodiment, on the water-cooled liquid silicone screw barrel device, it further includes: a nozzle sleeve 200 with a hollow cavity, the front end and the rear end of which are respectively sealed and sleeved on the female nozzle 300; wherein, a sealed cavity between the inner side wall and the outer side wall of the nozzle sleeve 200 forms a first cooling water channel 210, and a first water inlet 211 and a first water outlet 212 communicating with the first cooling water channel 210 are arranged on the nozzle sleeve 200, and the first water inlet 211 and the first water outlet 212 are arranged diagonally, and can also be arranged at different angles according to the actual installation space. By forming a first cooling water channel 210 between the female nozzle 300 and the nozzle sleeve 200, circulating cooling water enters the first cooling water channel 210 from the first water inlet 211 to cool the female nozzle 300, and the heat-exchanged cooling water is discharged from the first water outlet 212. The cooling circulation system adopted in this embodiment replaces the traditional heating type screw barrel group, cancels the heating device, saves the heating coil, the temperature sensing wire, and the temperature control module of the machine, and greatly reduces the risk of the female nozzle being easily deformed and abraded at high temperature.

[0058] In this embodiment, please continue to refer to Figure 9 and Figure 10 As shown in, sealing grooves 213 are respectively arranged on the inner side walls at the front and rear ends of the nozzle sleeve 200. Specifically, two sealing grooves 213 are arranged on the inner side wall at the front end of the nozzle sleeve 200, and one sealing groove 213 is arranged on the inner side wall at the front end of the nozzle sleeve 200. Sealing rings are respectively embedded in the sealing grooves 213, and the front and rear ends of the nozzle sleeve 200 are respectively sealed and connected with the female nozzle 300 through the sealing rings, so as to form a sealed first cooling water channel 210 between the inner side wall of the nozzle sleeve 200 and the outer side wall of the female nozzle 300.

[0059] Refer to Figure 1-2 、 Figure 5 and Figures 22-27 As shown in, as another preferred embodiment, a second cooling water channel 830 is spirally arranged along the circumferential direction of the feeding cavity 810 at the front end of the barrel 800, and the second water inlet 831 and the second water outlet 832 of the second cooling water channel 830 are arranged diagonally. A threaded hole 840 is arranged on the side surface at the front end of the barrel 800. A feeding port 820 communicating with the feeding cavity 810 is arranged in the middle of the barrel 800, and a mounting nut 860 is detachably installed at the rear end. A positioning pin 850 is arranged on the barrel 800 between the mounting nut 860 and the feeding port 820 to prevent the barrel 800 from rotating during the production process.

[0060] Refer to Figures 1-3 、Figure 5 and Figures 28-35 As shown in Figures 28-35 , as another preferred embodiment, the water-cooled liquid silicone screw barrel device further includes: a screw assembly 900 disposed in the feeding cavity 810 of the barrel 800, which includes a screw head assembly 910 and a screw body; wherein: the screw head assembly 910 includes a screw head 911, a compression spring 915, a check ring 912 and a spacer 913 sequentially sleeved on the screw head 911, and at least one spacer hole 914 is formed on the circumference of the spacer 913; and the screw body sequentially includes a first mixing section 920, a second mixing section 930, a third refining section 940, a feeding section 950, a sealing groove 960 and a driving key groove 970 from left to right, and the first mixing section 920 is detachably connected to the screw head 911.

[0061] In this embodiment, referring to Figure 29 and Figure 30 As shown in Figure 30 , a connection hole 921 is formed on the far end surface of the first mixing section 920, and the screw head 911 is threadedly connected in the connection hole 921 of the first mixing section 920, and spiral mixing teeth 922 are spirally arranged on the outer circumferential surface of the first mixing section 920 along its length direction.

[0062] In this embodiment, referring to Figure 35 As shown in Figure 35 , a plurality of diamond-shaped protrusions 931 are uniformly arranged on the surface of the second mixing section 930 along its circumferential direction. The angle of the diamond-shaped protrusions 931 facing the length direction of the screw body is 120°, and the angle along its circumferential direction is 60°, so as to improve the mixing degree of the silicone.

[0063] In this embodiment, referring to Figure 31 and Figure 32 As shown in Figure 32 , the third refining section 940 includes a smooth section 941 and a protruding section 942 disposed at the end of the smooth section 941. The diameter of the protruding section 942 is slightly larger than that of the smooth section 941, and a plurality of linear mixing grooves 943 are alternately arranged on the outer circumferential surface of the third refining section 940, and corresponding linear mixing teeth are formed between adjacent linear mixing grooves 943.

[0064] In this embodiment, referring to Figure 33 and Figure 34 As shown in Figure 34 , spiral feeding teeth 951 are arranged on the outer circumferential surface of the feeding section 950 along its length direction. The angle between the left side of the feeding teeth 951 and the screw body is 90°, and the angle between the right side of the feeding teeth 951 and the screw body is 120°.

[0065] Referring to Figure 1-2 , Figure 6 and Figures 13-14As shown, as another preferred embodiment, the flange 400 has a flange channel 410. The feed port at the rear end of the flange channel 410 is flared, and the discharge port at the front end of the flange channel 410 is stepped with a continuously increasing diameter. A number of threaded holes 420 and 430 are respectively provided on the flange 400 along its circumferential direction. The flange 400 is fixed on the material pipe 800 through the threaded hole 420, and the valve core fixing seat 700 on this side is fixed on the flange 400 through the threaded hole 430.

[0066] Refer to Figure 1-2 , Figure 6 , Figure 15 and Figure 19 As shown, as another preferred embodiment, the sealant valve core 500 further includes: a first transition section 520 and a second transition section 530 sequentially arranged between the head end valve core 510 and the rear end valve core 540. The first transition section 520 is smoothly connected to the head end valve core 510, and the second transition section 530 is smoothly connected to the rear end valve core 540; and at least two limiting protrusions 543 are provided in the middle of the rear end valve core 540. The limiting protrusions 543 are arranged in sequence along its outer circumferential surface. The retaining piece 600 is fixed on the rear end valve core 540 through the limiting protrusions 543, thereby forming the piston of the sealant assembly.

[0067] Refer to Figure 1-2 , Figure 6 , Figures 17-18 As shown, as another preferred embodiment, first convex rings 601 and second convex rings 602 that cooperate with the valve core fixing seat 700 are respectively provided on both sides of the retaining piece 600. At least two card slots 604 corresponding to the limiting protrusions 543 are provided on the first convex ring 601. Preferably, both the card slots 604 and the limiting protrusions 543 are 4 and are evenly distributed; a sealing groove 605 is provided on the outer circumferential end surface of the retaining piece 600.

[0068] Refer to Figure 1-2 , Figure 6 , Figures 20-21 As shown, as another preferred embodiment, at least one sealing groove 703 is provided on both the inner side wall and the outer side wall of the hollow cavity 701 of the valve core fixing seat 700; preferably, three sealing grooves 703 are provided on the inner side wall of the hollow cavity 701 of the valve core fixing seat 700; two sealing grooves 703 are provided on the outer side wall of the hollow cavity 701 of the valve core fixing seat 700. A number of threaded holes 702 are provided on the periphery of the valve core fixing seat 700 along its circumferential direction. The two valve core fixing seats 700 are respectively fixed on the flange 400 and the female nozzle 300 through bolts and the threaded holes 702.

[0069] Please refer to Figure 1 and Figure 36As shown in the figure, the working principle of the water-cooled liquid silicone screw barrel device is as follows: Silicone enters the feed port 820 of the barrel 800 simultaneously from the glue applicator AB. Under the rotation of the screw assembly 900, the silicone reaches the screw head 911 through the mesopore 914 between the spacer 913 and the check ring 912. Under the reverse force of the silicone, the screw assembly 900 will move backward, and a material pad will be formed between the rear valve core 540 of the glue-sealing valve core 500 and the screw head 911, thereby achieving the purpose of storing materials. The hollow cavity at the front end of the glue-sealing valve core 500 (equivalent to the cylinder piston) will have an air valve opened during or before injection to blow air from the first driving hole 310, forcing the baffle 600 and the glue-sealing valve core 500 to move backward. Then the silicone will reach the cavity of the sub-nozzle 100 from the inner hole 541 of the valve core of the glue-sealing valve core 500 through the material hole 542. While the injection cylinder continues to push the screw assembly 900, the silicone is continuously injected from the inner orifice 110 of the small nozzle at the front end of the sub-nozzle 100. When the sub-nozzle 100 contacts the mold, the silicone will enter the mold to achieve the purpose of forming products.

[0070] The specific embodiments of the present invention have been described in detail above, but they are only examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions made to the present invention are also within the scope of the present invention. Therefore, all equivalent transformations and modifications made without departing from the spirit and scope of the present invention should be covered within the scope of the present invention.

Claims

1. A water-cooled liquid silicone screw barrel device, comprising a first nozzle (100) with a hollow cavity, a second nozzle (300), a flange (400) and a barrel (800) arranged in sequence; Characterized in that, It further comprises a glue-sealing assembly arranged in the piston chamber (330) of the second nozzle (300), wherein: The glue-sealing assembly is a piston structure composed of a glue-sealing valve core (500), a baffle (600) and two valve core fixing seats (700) respectively arranged on both sides of the baffle (600); The glue-sealing valve core (500) and the baffle (600) fixed thereon move left and right relative to the two valve core fixing seats (700) in the piston chamber (330) under the action of a gas source, so as to open or close the inner orifice (110) of the nozzle of the first nozzle (100) for injecting glue; On the side wall of the second nozzle (300), a first driving hole (310) and a second driving hole (320) are arranged in sequence from left to right, and the first driving hole (310) and the second driving hole (320) are respectively arranged corresponding to the two valve core fixing seats (700); The glue-sealing valve core (500) has a head-end valve core (510) for closing or opening the inner orifice (110) of the nozzle of the first nozzle (100) and a rear-end valve core (540) with a valve core inner hole (541); the diameter of the front end of the rear-end valve core (540) gradually decreases to a straight section, and at least two material holes (542) communicating with the valve core inner hole (541) are arranged on the surface of its front end along the circumferential direction; the discharge port of the material hole (542) communicates with the inner orifice (110) of the nozzle, and the feed port communicates with the feeding chamber (810) of the barrel (800) through the valve core inner hole (541); The baffle (600) is fixedly installed at the tail end of the glue-sealing valve core (500), and the outer edge thereof is hermetically connected with the side wall of the piston chamber (330); and The two valve core fixing seats (700) are respectively symmetrically fixed on the second nozzle (300) and the flange (400), and are sleeved on the tail end of the glue-sealing valve core (500); By filling a pressure gas source into the piston chamber (330) on both sides of the baffle (600) through the first driving hole (310) or the second driving hole (320), the baffle (600) and the glue-sealing valve core (500) are driven to move left and right, so as to open or close the inner orifice (110) of the nozzle for injecting glue; It further comprises: A screw assembly (900) arranged in the feeding chamber (810) of the barrel (800), which includes a screw head assembly (910) and a screw body; wherein: The screw head assembly (910) includes a screw head (911), a compression spring (915), a check ring (912) and a spacer (913) sequentially sleeved on the screw head (911), and at least one spacer hole (914) is arranged on the spacer (913) along the circumferential direction; and The screw body sequentially includes a first kneading section (920), a second kneading section (930), a third kneading section (940), a feeding section (950), a second sealing groove (960), and a transmission key groove (970) from left to right. The first kneading section (920) is detachably connected to the screw head (911). It further includes: A nozzle sleeve (200) having a hollow cavity, the front end and the rear end of which are respectively and sealingly sleeved on the female nozzle (300). Wherein, a sealing cavity between the inner side wall and the outer side wall of the nozzle sleeve (200) forms a first cooling water channel (210), and a first water inlet (211) and a first water outlet (212) communicating with the first cooling water channel (210) are arranged on the nozzle sleeve (200).

2. The water-cooled liquid silicone screw and barrel device according to claim 1, characterized in that First sealing grooves (213) are respectively arranged on the inner side walls at the front and rear ends of the nozzle sleeve (200), and the first water inlet (211) and the first water outlet (212) are diagonally arranged.

3. The water-cooled liquid silicone screw and barrel device according to claim 1, characterized in that A second cooling water channel (830) is spirally arranged along the circumferential direction of the feeding cavity (810) at the front end of the barrel (800), and the second water inlet (831) and the second water outlet (832) of the second cooling water channel (830) are diagonally arranged.

4. The water-cooled liquid silicone screw and barrel device according to claim 1, characterized in that A feeding port (820) communicating with the feeding cavity (810) is arranged in the middle of the barrel (800), and a mounting nut (860) is detachably installed at the rear end.

5. The water-cooled liquid silicone screw and barrel device according to claim 1, characterized in that The flange (400) has a flange channel (410). The feeding port at the rear end of the flange channel (410) is in a flared shape, and the discharging port at the front end of the flange channel (410) is in a stepped shape with a continuously increasing diameter.

6. The water-cooled liquid silicone screw and barrel device according to claim 1, characterized in that The sealant valve core (500) further includes: A first transition section (520) and a second transition section (530) sequentially arranged between the head end valve core (510) and the rear end valve core (540). The first transition section (520) is smoothly connected to the head end valve core (510), and the second transition section (530) is smoothly connected to the rear end valve core (540); and At least two limiting protrusions (543) arranged in the middle of the rear end valve core (540), and the limiting protrusions (543) are sequentially arranged along the outer circumferential surface thereof.

7. The water-cooled liquid silicone screw and barrel device according to claim 6, characterized in that First convex rings (601) and second convex rings (602) matched with the valve core fixing seat (700) are respectively arranged on both sides of the retaining piece (600), and at least two card slots (604) corresponding to the limiting protrusions (543) are arranged on the first convex ring (601).

Images