Hot runner nozzle adjusting and assembling module and fixed mold

Abstract

The invention relates to the technical field of injection molds, and discloses a hot runner nozzle adjusting and assembling module and a fixed mold, the hot runner nozzle adjusting and assembling module comprises a runner seat and a nozzle, a plurality of nozzle mounting seats are distributed on the runner seat, each nozzle mounting seat comprises a fixedly arranged heating seat and a rotating seat rotating on the heating seat, and a hot flow cavity is formed in each rotating seat; an annular open groove is formed in the outer ring wall of the rotating base, a sealing ring matched with the annular open groove in a rotating and sealing mode is fixed to the flow channel base, flow passing grooves are formed in the positions, between the adjacent heat flow cavities, in the flow channel base, the sealing ring is provided with insertion rings connected with the flow passing grooves in a sealed and inserted mode, and the flow channel base is provided with a limiting component allowing or limiting rotation of the rotating base. The upper end face of the rotating base is provided with a plurality of assembling openings capable of being connected with nozzles or sealing plugs in a sealed mode, ejector pins blocking discharging openings of the nozzles in a normal state elastically ascend and descend in the nozzles, ascending and descending of the ejector pins are controlled by electrifying or de-electrifying of the high-temperature-resistant electromagnets, the module is high in adaptability and can be produced and sold in batches, and the manufacturing cost of the fixed mold is reduced.

Description

Technical Field

[0001] This invention relates to the field of injection mold technology, and in particular to a hot runner nozzle adjustment assembly module and a fixed mold. Background Technology

[0002] An injection mold with a hot runner structure can be described by referring to the Chinese patent application No. 202410260625.5, which discloses a replaceable insert type two-color injection mold with a sensor and a hot runner structure. The mold has a cavity embedded in the fixed mold, and the cavity is provided with a replaceable insert structure. The insert structure has a hot runner inside.

[0003] Injection molding, such as Figure 14 When designing elongated automotive trim parts, multiple nozzles need to be distributed along the edge of the product within a molding cavity to ensure that the flow path during injection molding is not too long and can smoothly fill the cavity. Because different products have significant differences in length-to-width ratios and contour shapes, in the above design, the hot runner and nozzles are mounted on inserts, and their positions cannot be adjusted. This design can only accommodate one type of product; different products require replacement of the entire insert with the hot runner and nozzles, resulting in high replacement costs. Summary of the Invention

[0004] This invention addresses the shortcomings of existing molds where hot runners and nozzles are located inside replaceable inserts, with fixed nozzle positions and numbers, resulting in low insert adaptability and high costs, leading to high replacement costs. The primary objective of this invention is to provide a hot runner nozzle adjustment assembly module that can be mass-produced and adapted to various inserts. The inserts it adapts to do not require hot runners and nozzles, thereby significantly reducing the cost of the inserts.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: The hot runner nozzle adjusting assembly module comprises a runner seat and a plurality of nozzles, the runner seat is provided with a plurality of circular assembly grooves, each assembly groove is provided with a nozzle mounting seat, the nozzle mounting seat comprises a rotating seat and a heating seat arranged in sequence, the heating seat is fixed in the assembly groove, the rotating seat is rotatably arranged on the heating seat, the inside of the rotating seat is a hot flow chamber, the outer ring wall of the rotating seat is provided with an annular groove in communication with the hot flow chamber, the inner wall of the assembly groove is fixedly provided with a sealing ring in rotatable sealing cooperation with the annular groove, the adjacent assembly grooves are provided with a flow channel in communication, the sealing ring is protrudingly provided with a plug ring in sealing plug-in cooperation with the flow channel, the flow channel and the hot flow chamber form a hot flow channel, the rotating seat is provided with a plurality of assembly openings on the upper end face, the assembly openings are sealingly connected with the nozzles or sealing plugs, the inside of the nozzle is elastically and vertically provided with a ejector pin, the ejector pin blocks the discharge port of the nozzle in a normal state, the runner seat is provided with a high-temperature-resistant electromagnet, and the lifting of the ejector pin is controlled by the power-on or power-off state of the high-temperature-resistant electromagnet.

[0006] According to the above scheme, the operator can rotate the rotating seat to adjust the position of the assembly opening according to the requirements of different product cavities, thereby changing the mounting position of the nozzle, and the rotating seat is limited by the limiting part. The operator can also assemble 0 to multiple nozzles on each rotating seat, and the assembly opening without the nozzle is sealed with a sealing plug. When the rotating seat rotates, the sealing ring fixed in the assembly groove rotates in sealing cooperation, thereby avoiding material leakage. The position of the nozzle in the module can be flexibly adjusted, the number of nozzles can be flexibly adjusted, and the on-off of the nozzle discharge port at any mounting position can be controlled by the power-on or power-off of the high-temperature-resistant electromagnet. The mold plate or insert cooperating with it only needs to be provided with a hole for the nozzle to pass through and a cavity. The assembly module can reduce the cost of the mold plate or insert and adapt to multiple mold plates or inserts. The high adaptability also allows it to be mass-produced and widely sold.

[0007] Preferably, the assembly openings are distributed at intervals along the radial direction of the rotating seat.

[0008] According to the above scheme, the assembly openings are distributed at intervals along the radial direction of the rotating seat. With the rotation of the rotating seat, different sizes and shapes of cavities can be more comprehensively covered. Especially for some product cavities with large radial size changes, the hot flow can be uniformly filled in each area of the cavity by installing nozzles at different radial positions, thereby reducing product defects such as bubbles and shrink marks caused by uneven hot flow distribution, and further improving the quality and yield of injection molded products.

[0009] Preferably, the limiting part comprises a gear ring integrally arranged on the upper end outer ring wall of the heating seat, the gear ring is arranged concentrically with the heating seat, and a plurality of limiting teeth members are detachably fixed on the upper end face of the runner seat by bolts. Each limiting tooth member can engage with at least one gear ring.

[0010] With the above scheme, the tooth ring is engaged with the limiting tooth piece to lock the rotating seat, and the limiting mode of the tooth engagement has high stability and reliability, which can effectively prevent the rotating seat from accidentally rotating due to vibration and other factors during the injection molding process, and ensure the stability of the nozzle position. At the same time, the limiting tooth piece is detachably fixed on the flow channel seat by bolts, when the position of the rotating seat needs to be adjusted, only need to unscrew the bolts and remove the limiting tooth piece, and after the rotating seat is adjusted in place, the limiting tooth piece can be reinstalled, which is simple and convenient to operate, and reduces the working difficulty of the operator. In addition, each limiting tooth piece is engaged with at least one tooth ring, and if multiple rotating seats are provided on the flow channel seat, the adjustment time can be shortened.

[0011] As a preferred, the sealing ring comprises an annular metal framework and a first sealing piece fixed on the upper and lower ends of the metal framework and sealingly matched with the upper and lower ends of the annular groove, the plug ring is integrally formed with the metal framework, and the plug ring is provided with a second sealing piece for sealing connection with the overflow groove. The first sealing piece and the second sealing piece are made of FFKM.

[0012] With the above scheme, the metal framework provides good support for the sealing ring, ensuring that the sealing ring is not easily deformed during the rotation of the rotating seat, and ensuring that the first sealing piece and the upper and lower ends of the annular groove always maintain good sealing fit. The plug ring is integrally formed with the metal framework, which enhances the connection strength of the plug ring and the sealing ring as a whole, and further improves the stability of the sealing structure. FFKM (perfluoroether rubber) has excellent high-temperature resistance and can maintain good elasticity and sealing performance in high-temperature environment, and is not prone to aging, deformation or failure. The first sealing piece and the second sealing piece are made of FFKM, effectively solving the problem of sealing performance decline of traditional sealing materials under high temperature, prolonging the service life of the sealing ring and reducing the equipment maintenance cost.

[0013] As a preferred, the assembly port is provided with an internal thread, and the nozzle or the sealing plug is sealingly screwed to the assembly port. The upper end of the sealing plug is recessed with a driving groove for facilitating the tool to drive the rotation thereof.

[0014] With the above scheme, the threaded connection has good sealing performance and connection strength, which can effectively prevent the heat flow from leaking from the connection part of the assembly port and the nozzle or the sealing plug. The driving groove can be inserted by a screwdriver and the like, which is used to realize the disassembly and assembly of the sealing plug, and facilitates the driving of the rotating seat to rotate.

[0015] As a preferred, a guide structure is provided between the high-temperature-resistant electromagnet and the ejector pin to ensure the vertical lifting of the ejector pin. The guide structure comprises a guide groove recessed at the bottom of the ejector pin and a guide pin fixedly protruding on the high-temperature-resistant electromagnet. The number of guide pins is consistent with the number of assembly ports and is arranged one by one corresponding to the assembly ports. The guide pin is made of metal.

[0016] By adopting the scheme, the guide structure can avoid the ejection pin from being deviated or tilted, prevent problems such as poor discharging and material leakage caused by the deviation of the ejection pin, and improve the precision of the nozzle discharging control. The guide pin is arranged in the same number as the assembly openings and in one-to-one correspondence, so that the ejection pin inside any nozzle assembled on the rotating seat can be independently and accurately guided, and the stability and reliability of the ejection pin movement are further ensured.

[0017] The second object of the present application is to provide a fixed mold, comprising a fixed mold base and a hot runner plate fixed on the fixed mold base, and a fixed mold plate with a cavity is assembled on the upper end of the hot runner plate, characterized in that: the bottom of the hot runner plate is recessed with an assembly cavity, the assembly cavity and the fixed mold base are assembled with the hot runner nozzle adjusting assembly module, and a displacement circular groove corresponding to the assembly groove is arranged on the upper end of the hot runner plate, a supporting turntable is rotatably arranged on the displacement circular groove, and a displacement slot is arranged on the supporting turntable, which can expose all assembly openings and allow the nozzles to pass through.

[0018] By adopting the scheme, the fixed mold is assembled with the hot runner nozzle adjusting assembly module, has the advantage that the position and number of the module nozzles are adjustable, and the fixed mold can adapt to fixed mold plates with various cavities, so that the fixed mold plate does not need to be assembled with nozzles and built-in hot runners, and the cost can be significantly reduced. The turntable is used to adapt to the rotation adjustment of the rotating seat, and the displacement slot can allow the assembled nozzles to pass through the turntable.

[0019] As a preferred, the fixed mold plate comprises a plurality of frame seats selectively assembled on the upper end of the fixed mold base and having different assembly grooves, the assembly groove of each frame seat is provided with an avoidance slot through which the nozzles in the adjusted position pass in turn, and at least two insert blocks with different cavities but sharing the nozzles are detachably fixed in each frame seat.

[0020] By adopting the scheme, the fixed mold plate adopts a plurality of selectively assembled frame seats, each frame seat has a different assembly groove, and the operator can select the corresponding frame seat to be assembled on the fixed mold base according to the production requirements. The assembly groove of the different frame seats cooperates with the avoidance slot to adapt to the nozzles in the adjusted position, so that the fixed mold can further adapt to more different types and structures of products, and the application range of the fixed mold is expanded. At least two insert blocks with different cavities but sharing the nozzles are detachably fixed in each frame seat, so that when different cavity products need to be produced, the frame seat and the nozzle position do not need to be replaced, and only the original insert block needs to be disassembled and the insert block with the corresponding cavity needs to be installed. This design not only reduces the auxiliary operation time in the insert block replacement process and improves the production switching efficiency, but also reduces the number of nozzles used by sharing a set of nozzles by multiple insert blocks, and reduces the equipment procurement and maintenance cost.

[0021] As preferred, a protective sleeve is detachably fixed at the bottom of the assembly groove of the frame seat by bolts, and is sleeved on the nozzle to avoid accidental contact with the nozzle when replacing the insert block.

[0022] With the above scheme, the protective sleeve is sleeved on the nozzle, and in the process of replacing the insert block, accidental contact between the operator or the insert block and the nozzle can be effectively avoided, the nozzle is prevented from being damaged, deformed or displaced due to external force, the normal working state of the nozzle is ensured, the service life of the nozzle is prolonged, and the equipment maintenance cost and the production interruption risk are reduced.

[0023] As preferred, the inner top end of the protective sleeve is designed in a conical shape with the pointed end upward.

[0024] With the above scheme, the conical design can achieve the effect of glue sealing.

[0025] The present application has the following technical effects due to the use of the above technical scheme: Through the rotation of the rotating seat and the cooperation of the limiting parts, the position of the nozzle is freely adjusted; the flexible selection of the assembly port cooperates with the nozzle and the sealing plug to realize the on-demand configuration of the number of nozzles; the fixed mold is further expanded in the adaptation range through the selective assembly of the frame seat and the detachable design of the insert block, which can meet the injection molding needs of various different cavities and different specifications of products, overcome the limitations of single adaptation of traditional molds, greatly improve the universality and utilization rate, and thus batch production and independent sales can be realized; The double sealing structure of the sealing ring and the annular slot, the ring and the flow groove is adopted, and the FFKM material resistant to high temperature is selected to make the sealing element, which effectively prevents the leakage of molten material; The temperature-resistant electromagnet controls the lifting of the ejector pin, and under the guidance of the guide structure, the ejector pin in the nozzle at any installation position can realize vertical movement, realize precise control of nozzle discharge, and improve product forming precision. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the isometric view of the hot runner nozzle adjusting and assembling module of the present embodiment Figure 1 ; Figure 2 is the isometric view of the hot runner nozzle adjusting and assembling module of the present embodiment Figure 2 ; Figure 3 is the isometric view of the hot runner nozzle adjusting and assembling module of the present embodiment Figure 4 is the isometric view of the hot runner nozzle adjusting and assembling module of the present embodiment Figure 5 is Figure 4 the sectional view of A-A of Figure 6 the sectional view of A-A ofFigure 4 a sectional view of B-B of Fig. 1; Figure 7 is an axonometric view of the hot runner nozzle adjusting assembly module of the present embodiment placed on the fixed die holder; Figure 8 is an axonometric view of the hot runner plate assembled with the fixed die holder of the present embodiment; Figure 9 is an axonometric view of the frame seat assembled on the hot runner plate of the present embodiment; Figure 10 is an axonometric view of the hot runner nozzle adjusting assembly module assembled with the protective bushing of the present embodiment; Figure 9 Figure 11 is an axonometric view of the fixed die of the present embodiment; Figure 12 is an axonometric view of the limiting tooth of the present embodiment; Figure 13 is an axonometric view of the heating wire of the present embodiment; Figure 14 is a prior art long strip-shaped plastic automobile ornament.

[0027] The names of the parts referred to by the respective reference numerals in the above drawings are as follows: 1, flow channel seat; 2, assembly groove; 3, heating seat; 4, flow passage; 5, rotating seat; 501, hot runner chamber; 503, connecting column; 502, assembly opening; 6, tooth ring; 7, sealing plug; 701, driving groove; 8, nozzle; 9, limiting tooth; 901, anti-rotation bump; 10, heating wire; 11, sealing ring; 1101, metal framework; 1102, first sealing member; 12, insertion ring; 13, second sealing member; 14, high-temperature-resistant electromagnet; 15, guide needle; 16, ejector pin; 17, spring; 18, fixed die holder; 19, hot runner plate; 20, support turntable; 21, clearance slot; 22, frame seat; 23, assembly recess; 24, protective bushing; 25, insert block; 26, cavity. DETAILED DESCRIPTION

[0028] The present application will be described in further detail below with reference to the accompanying drawings and embodiments.

[0029] A fixed die comprises a fixed die holder 18 and a hot runner plate 19 fixed on the fixed die holder 18, as shown in Figures 7-8 The upper end of the hot runner plate 19 is assembled with a fixed die plate with a cavity 26, and the bottom of the hot runner plate 19 is recessed with an assembly cavity, and the hot runner nozzle adjusting assembly module is assembled between the assembly cavity and the fixed die holder 18.

[0030] The hot runner nozzle adjusting assembly module, as shown in Figures 1-2 ​As shown, including flow channel seat 1 and several nozzles 8, the length of nozzle 8 is different, flow channel seat 1 is provided with a plurality of circular assembly groove 2, assembly groove 2 is distributed in matrix, assembly groove 2 of this embodiment is provided with two rows and five in each row, a nozzle mounting seat is arranged in each assembly groove 2, nozzle mounting seat includes rotation seat 5 and heating seat 3 arranged above and below, heating seat 3 is fixed in assembly groove 2, heating seat 3 bottom is provided with spiral mounting groove, heating wire 10 is embedded in spiral mounting groove, combined with Figure 13 As shown, heating wire 10 is spirally distributed, rotation seat 5 is rotatably arranged on heating seat 3, the inside of rotation seat 5 is heat flow chamber 501, combined with Figures 4-6 As shown, the outer ring wall of rotation seat 5 is provided with annular slot in communication with heat flow chamber 501, the upper and lower ends of rotation seat 5 are connected through a plurality of connecting columns 503, the inner wall of assembly groove 2 is fixedly provided with sealing ring 11 in rotatable sealing cooperation with annular slot, the adjacent assembly grooves 2 are provided with communication overflow groove 4, the sealing ring 11 is protrudingly provided with plug ring 12 in sealing plug-in cooperation with overflow groove 4, overflow groove 4 and heat flow chamber 501 form heat flow channel.

[0031] Sealing ring 11 includes annular metal framework 1101 and first sealing member 1102 fixed on the upper and lower ends of metal framework 1101 and in sealing cooperation with the upper and lower ends of annular slot, the cross section of first sealing member 1102 is stepped, plug ring 12 is integrally formed with metal framework 1101 of the same material, which can be made of stainless steel, second sealing member 13 is arranged between plug ring 12 and the inner wall of overflow groove 4, second sealing member 13 is ring sleeve arranged at the end of plug ring 12, first sealing member 1102 and second sealing member 13 are made of FFKM.

[0032] The upper end surface of rotation seat 5 is provided with a plurality of assembly ports 502 along the radial direction, combined with Figure 3 And Figure 5 As shown, assembly port 502 can be sealingly connected with nozzle 8 or sealing plug 7, assembly port 502 is provided with internal thread, nozzle 8 or sealing plug 7 is sealingly screwed on assembly port 502, the upper end of sealing plug 7 is recessed with driving groove 701 for facilitating tool to drive its rotation, driving groove 701 is hexagonal groove.

[0033] Needle 16 is elastically and vertically arranged in nozzle 8, refer to Figure 5As shown, the outer wall of the ejector pin 16 is provided with a limiting ring, and the ejector pin 16 is sleeved with a spring 17 which is elastically abuts against the bottom of the nozzle 8 and the limiting ring respectively, the spring 17 is made of stainless steel, and the ejector pin 16 is in a state of closing the discharge port of the nozzle 8 under the driving of the spring 17. A high-temperature-resistant electromagnet 14 is arranged in the flow channel seat 1, the lifting of the ejector pin 16 is controlled by the electrification or de-electrification of the high-temperature-resistant electromagnet 14, the ejector pin 16 is made of iron as a whole or the bottom part is made of iron, when the high-temperature-resistant electromagnet 14 is electrified, the ejector pin 16 is lowered, and the discharge port of the nozzle 8 is opened; when the high-temperature-resistant electromagnet 14 is de-electrified, the ejector pin 16 is raised, and the discharge port of the nozzle 8 is closed.

[0034] The high-temperature-resistant electromagnet 14 is composed of a magnetic core and a coil insulation material, the magnetic core is made of soft iron, the magnetism of the soft iron can be stabilized to 700 DEG C, the coil insulation material includes high-temperature-resistant enameled wire, coil framework and insulation material, the high-temperature-resistant enameled wire adopts polyimide or PTFE coating and can resist temperature of 250 DEG C and above, the coil framework adopts ceramic, after the coil is wound, the coil is packaged by using high-temperature-resistant silicone varnish, and the lead wire is a high-temperature-resistant wire insulated by Teflon, the lead wire is sealed out of the upper end of the rotating seat 5 and is in a relaxed state, and can adapt to the 360 DEG rotation of the rotating seat 5.

[0035] A guide structure for ensuring the vertical lifting of the ejector pin 16 is arranged between the high-temperature-resistant electromagnet 14 and the ejector pin 16, referring to Figure 5 As shown, the guide structure includes a guide groove recessed at the bottom of the ejector pin 16 and a guide pin 15 fixedly protruding on the high-temperature-resistant electromagnet 14, the number of the guide pin 15 is consistent with that of the assembly slots 5 and is arranged one by one in correspondence with the assembly slots 5, and the guide pin 15 is made of stainless steel or iron.

[0036] A limiting component for locking or unlocking the rotating seat 5 is arranged between the rotating seat 5 and the flow channel seat 1, referring to Figure 1 and Figure 12 As shown, the limiting component includes a gear ring 6 integrally arranged on the outer ring wall of the upper end of the heating seat 3, the gear ring 6 is arranged concentrically with the heating seat 3, a plurality of limiting tooth pieces 9 are detachably fixed on the upper end surface of the flow channel seat 1 by bolts, each limiting tooth piece 9 can be engaged with at least one gear ring 6, in the embodiment, each limiting tooth piece 9 can be engaged with four gear rings 6 at the same time, the center bottom of the limiting tooth piece 9 protrudes a regular hexagonal anti-rotation protruding block 901, the upper end of the flow channel seat 1 is recessed with an anti-rotation groove for inserting the anti-rotation protruding block 901, and the bolts are sequentially threaded through the limiting tooth block, the anti-rotation protruding block 901 and are screw-connected with the threaded groove at the bottom of the anti-rotation groove.

[0037] A let-go circular groove corresponding to the assembly groove 2 is arranged on the upper end of the hot runner plate 19, and a support turntable 20 is rotatably arranged on the let-go circular groove, referring to Figure 8As shown, the support turntable 20 is provided with a clearance slot 21 which can expose all assembly openings 502 and allow the nozzles 8 to pass through, and the outer ring wall of the support turntable 20 is recessed with a guide groove, and the inner wall of the clearance slot is provided with a support guide block which is guided and matched with the guide groove, and the support guide block is annular or block-shaped, if it is annular, it is concentrically arranged with the support turntable 20; if it is block-shaped, it is uniformly and spacedly provided on the inner wall of the clearance slot and at least three or more are arranged.

[0038] The fixed mold plate comprises a plurality of frame seats 22 which are selectively assembled on the upper end of the fixed mold base 18 and are provided with different assembly grooves 23, as shown in Figures 9-11 As shown, the frame seat 22 is fixedly connected with the fixed mold base 18 through a plurality of bolts, and the assembly groove 23 of each frame seat 22 is provided with an avoidance slot at the bottom which can be sequentially passed through by the nozzles 8 which are adjusted to the right position, and at least two insert blocks 25 which are provided with different cavities 26 but can share the nozzles 8 are detachably fixed in each frame seat 22 through bolts, and the inside of these insert blocks 25 is provided with a cooling channel which can pass cooling water or cooling gas.

[0039] The protection sleeve 24 which is sleeved outside the nozzle 8 to avoid accidental touch of the nozzle 8 when the insert block 25 is replaced is detachably fixed at the bottom of the assembly groove 23 of the frame seat 22 through bolts, as shown in Figure 10 As shown, the inside top end of the protection sleeve 24 is provided with a tapered shape with a pointed end upward, and the insert block 25 is provided with a through slot which can be passed through by the protection sleeve 24.

[0040] The adaptability adjustment process of the hot runner nozzle adjustment assembly module and the frame seat 22 is as follows: 1. According to the cavity 26 structure of the product to be injection molded, select the appropriate frame seat 22; 2. According to the avoidance slot position on the frame seat 22, select the rotating disc which needs to be assembled with the nozzle 8; 3. According to the avoidance slot position on the frame seat 22, rotate the rotating seat 5 to the required angle, and then use the limiting tooth ring 6 to limit; 4. According to the avoidance slot position on the frame seat 22, find the assembly opening 502 which is suitable for the nozzle 8; 5. According to the distance from the insert block 25 of the product to be injection molded to the fixed mold base 18, select the nozzle 8 with a suitable height and diameter; 6. Install the selected nozzle 8 on the selected assembly opening 502 in sequence; 7. Assemble the flow channel seat nozzle adjustment assembly module between the assembly cavity of the hot runner plate 19 and the flow channel seat 1, and make the nozzles 8 sequentially pass out of the clearance slot 21 of the corresponding support turntable 20; 8. Fix the frame seat 22 on the upper end surface of the hot runner plate 19, and make the nozzles 8 sequentially pass through the avoidance slot of the fixed mold base 18; 9. Assemble the protection sleeve 24 on the fixed mold base 18 in sequence; 10. Fix the insert 25 on the frame seat 22, and protect the bush 24 in turn through the corresponding through slot of the insert 25.

[0041] For the replacement of several inserts 25 with different cavity 26 which can fit one frame seat 22, only the insert 25 needs to be disassembled.

[0042] The above only describes the preferred embodiments of the present application, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical scheme which belongs to the idea of the present application is within the protection scope of the present application. It should be pointed out that for ordinary skilled in the art, several improvements and refinements without departing from the principles of the present application, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A hot runner nozzle adjustment assembly module comprising a runner block (1) and a number of nozzles (8), characterized in that, The flow channel seat (1) is provided with a plurality of circular assembly grooves (2), each assembly groove (2) is provided with a nozzle mounting seat, the nozzle mounting seat comprises a rotating seat (5) and a heating seat (3) arranged in sequence, the heating seat (3) is fixed in the assembly groove (2), the rotating seat (5) is rotatably arranged on the heating seat (3), the inside of the rotating seat (5) is a hot flow chamber (501), the outer ring wall of the rotating seat (5) is provided with an annular groove in communication with the hot flow chamber (501), the inner wall of the assembly groove (2) is fixedly provided with a sealing ring (11) in rotatable sealing cooperation with the annular groove, the adjacent assembly grooves (2) are provided with a flow-through groove (4) in communication, the sealing ring (11) is provided with a plug ring (12) in sealing plug-in cooperation with the flow-through groove (4), the flow-through groove (4) and the hot flow chamber (501) form a hot flow channel, a limiting component for locking or unlocking the rotating seat (5) is arranged between the rotating seat (5) and the flow channel seat (1), the upper end surface of the rotating seat (5) is provided with a plurality of assembly openings (502), the assembly openings (502) are sealingly connected with nozzles (8) or sealing plugs (7), the inside of the nozzle (8) is elastically and vertically arranged with a thimble (16), the thimble (16) blocks the discharge port of the nozzle (8) in a normal state, a high-temperature-resistant electromagnet (14) is arranged in the flow channel seat (1), the lifting of the thimble (16) is controlled by the electrification or de-electrification state of the high-temperature-resistant electromagnet (14).

2. The hot- flow nozzle adjustment assembly module of claim 1, wherein: The assembly openings (502) are distributed in the radial direction of the rotating seat (5).

3. The hot- flow nozzle adjustment assembly module of claim 1, wherein: The limiting component comprises a gear ring (6) integrally arranged on the upper end outer ring wall of the heating seat (3), the gear ring (6) is arranged concentrically with the heating seat (3), a plurality of limiting tooth pieces (9) are detachably fixed on the upper end surface of the flow channel seat (1) by bolts, and each limiting tooth piece (9) can engage with at least one gear ring (6).

4. The hot-foil duct nozzle adjustment assembly module of claim 1, wherein: The sealing ring (11) comprises an annular metal framework (1101) and first sealing pieces (1102) fixed on the upper and lower ends of the metal framework (1101) and in sealing cooperation with the upper and lower ends of the annular groove, the plug ring (12) is integrally formed with the metal framework (1101) and is made of the same material, the plug ring (12) is provided with second sealing pieces (13) for sealing connection with the flow-through groove (4), and the first sealing pieces (1102) and the second sealing pieces (13) are made of FFKM.

5. The hot- flow nozzle conditioning module of claim 1 or 2, wherein: The assembly openings (502) are provided with internal threads, the nozzles (8) or the sealing plugs (7) are sealingly screwed on the assembly openings (502), and the upper end of the sealing plug (7) is recessed with a driving groove (701) for facilitating the rotation of the sealing plug (7) driven by a tool.

6. The hot- flow nozzle conditioning module of claim 1 or 2, wherein: A guide structure is arranged between the high-temperature-resistant electromagnet (14) and the thimble (16) to ensure the vertical lifting of the thimble (16), the guide structure comprises a guide groove recessed on the bottom of the thimble (16) and guide needles (15) fixedly and protrudingly arranged on the high-temperature-resistant electromagnet (14), the number of the guide needles (15) is consistent with the number of the assembly openings (502) and is arranged one-to-one corresponding to the assembly openings (502), and the guide needles (15) are made of metal.

7. A fixed die comprising a fixed die seat (18) and a hot runner plate (19) fixed to the fixed die seat (18), the hot runner plate (19) being fitted at its upper end with a fixed die plate having a cavity (26), characterized in that: The bottom of the hot runner plate (19) is concave with assembly cavities, the assembly cavities and the fixed mold base (18) are assembled with the hot runner nozzle adjusting assembly module as claimed in any one of claims 1-6, the upper end of the hot runner plate (19) is provided with a corresponding circular slot, the circular slot is provided with a support turntable (20) rotating thereon, the support turntable (20) is provided with a corresponding circular slot (21) exposing all assembly openings (502) and allowing the nozzles (8) of the assembly openings (502) to pass through.

8. A fixed die according to claim 7, wherein: The fixed mold plate includes a plurality of frame seats (22) selectively assembled on the upper end of the fixed mold base (18) and provided with different assembly grooves (23), the assembly groove (23) of each frame seat (22) is provided with a corresponding avoiding groove at the bottom, allowing the nozzles (8) in the adjusted position to pass through in sequence, and at least two insert blocks (25) with different cavity shapes (26) but sharing the nozzles (8) are detachably fixed in each frame seat (22).

9. A fixed die according to claim 8, wherein: The bottom of the assembly groove (23) of the frame seat (22) is detachably fixed with a protective bushing (24) sleeved on the nozzle (8) to avoid accidental contact with the nozzle (8) when the insert block (25) is replaced, and the insert block (25) is provided with a through groove allowing the protective bushing (24) to pass through.

10. A fixed die according to claim 9, wherein: The inner top end of the protective bushing (24) is provided with a tapered shape with a pointed end upward.

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