A hot nozzle structure for a hot runner mold

Abstract

The application discloses a hot nozzle structure for a hot runner mold and relates to the field of molds, which comprises a mounting mechanism connected with a flow channel, the mounting mechanism comprises a first mounting seat and a second mounting seat, the first mounting seat and the second mounting seat are symmetrically distributed, the outer side of the first mounting seat is provided with a connecting and positioning mechanism, the connecting of the first mounting seat and the second mounting seat is controlled, and the inner side of the first mounting seat and the inner side of the second mounting seat are both provided with a nozzle head cover. The hot nozzle structure for the hot runner mold hides the nozzle core in the inside through the detachable structure of the first mounting seat and the second mounting seat and the cooperation of the nozzle head cover, the heating module is located on the inner side of the nozzle head cover, heat can be transmitted faster, the heat dissipation can be reduced, the nozzle core can be taken out after the nozzle head cover is separated, the blockage in the nozzle core and the nozzle head cover can be cleaned, or the nozzle core can be replaced, so that the hot nozzle structure can be adapted to the use of various recycled plastics.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of molds, in particular to a hot nozzle structure for a hot runner mold. BACKGROUND

[0002] With the continuous development of plastic recycling technology, more and more recycled plastics are applied in injection molding field. Due to the difference in melt flow characteristics between recycled plastics and virgin plastics, the melt flow properties of recycled plastics also differ from those of virgin plastics. Therefore, the requirements for hot nozzles when injecting recycled plastics are also different.

[0003] Prior art 1 (Chinese patent with application number CN202420208059.9, published on January 28, 2025) is a hot nozzle structure based on a hot runner mold, which includes a main body, the main body is surrounded by a fastening device, the main body includes a shell, a hot nozzle body is movably connected inside the shell, a heating element is fixedly installed at the bottom of the hot nozzle body, the fastening device includes a left hoop, the left hoop is movably connected with a right hoop on one side, an insertion hole is fixedly provided on the side wall of the left hoop, and an insertion piece is movably connected to the right hoop. The hot nozzle structure based on the hot runner mold, by setting the fastening device, the fixed block drives the insertion piece to slide in the slide way and sends the insertion piece into the insertion hole to complete the fastening effect, and then the fixed block drives the insertion piece to slide in the slide way and separates the insertion piece from the insertion hole to complete the disassembly work. By setting the heating element, the heating element is arranged at the bottom end of the hot nozzle body and surrounded by the flow channel, which can ensure that the flow channel can be heated at the same time, preventing internal solidification; Prior art 2 (Chinese patent with application number CN202322232683.0, published on March 12, 2024) is a hot nozzle structure of a hot runner mold, which includes a hot nozzle body, a nozzle core is installed inside the hot nozzle body, a spring is installed inside the hot nozzle body, a nozzle head is screwedly installed inside the top end of the hot nozzle body, a positioning flange is installed on the outer surface of the bottom end of the hot nozzle body, and a rotating shaft is rotatably installed inside the positioning flange. The hot nozzle structure of the hot runner mold, by using a tool to clamp the rotating shell in the groove, the rotating shell is rotated, the rotating shell is rotated with the gear ring, the gear ring is rotated with the gear and the rotating shaft fixedly connected inside, the rotating shaft is rotated with the four lead screws to enter the flow channel plate wire hole and tighten, realizing the fixation of the positioning flange and the installation of the hot nozzle body, avoiding the traditional hot runner hot nozzle which adopts flange and screw during installation, the screw needs to be installed diagonally to ensure that the hot nozzle does not deviate, and repeated adjustment of the diagonal screw leads to slow hot nozzle installation speed and increases the difficulty of hot nozzle installation.

[0004] The current hot nozzle structure is directly provided with a heating module outside the hot nozzle in use, heat is slowly transferred to the inside, heat dissipation is easy, the hot nozzle is a whole structure, the internal channel cannot be disassembled and repaired when the internal channel is blocked, and the hot nozzle continues to drip material after stopping injection only by relying on the external control circuit, which affects the use stability of the hot nozzle. SUMMARY

[0005] The purpose of the present application is to provide a hot nozzle structure for a hot runner mold to solve the problem of the current hot nozzle structure in use, which is directly provided with a heating module outside the hot nozzle, heat is slowly transferred to the inside, heat dissipation is easy, the hot nozzle is a whole structure, the internal channel cannot be disassembled and repaired when the internal channel is blocked, and the hot nozzle continues to drip material after stopping injection only by relying on the external control circuit, which affects the use stability of the hot nozzle.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a hot nozzle structure for a hot runner mold, comprising a mounting mechanism connected with a flow channel, the mounting mechanism comprising a first mounting seat and a second mounting seat, the first mounting seat and the second mounting seat being symmetrically distributed left and right, and the outer side of the first mounting seat being provided with a connecting positioning mechanism to control the connection of the first mounting seat and the second mounting seat, the inner side of the first mounting seat and the inner side of the second mounting seat being provided with a nozzle head cover, the nozzle head cover being in a closed structure after being connected, and the inner side of the nozzle head cover being provided with a heating module, the inner side of the nozzle head cover being provided with a nozzle core, and the upper end of the nozzle core and the inside of the nozzle head cover being in communication with each other, and the inner side of the nozzle head cover being fixed with a ring body for providing positioning of the upper end of the nozzle core, the inside of the nozzle core being provided with a discharging groove, and the upper side of the discharging groove being provided with a discharging control mechanism.

[0007] Further optimization of the technical scheme, the abutting portion of the first mounting seat and the second mounting seat is provided with a conductive abutting mechanism, so that the heating module circuits of the inner side of the first mounting seat and the inner side of the second mounting seat are in communication, and the outer side of the first mounting seat is provided with a terminal for connecting an external control wire harness.

[0008] Further optimization of the technical scheme, the connecting positioning mechanism comprises an abutting piece and a connecting cap;

[0009] The abutting piece is fixed to the right side of the first mounting seat, and the abutting piece penetrates the inside of the second mounting seat;

[0010] The connecting cap is arranged at the right end of the abutting piece, and the connecting cap and the abutting piece are in threaded connection.

[0011] Further optimization of the technical scheme, the blanking control mechanism between the core is detachable connection, and the upper end of the blanking control mechanism is detachably installed in the inner side of the first mounting seat and the second mounting seat.

[0012] Further optimization of the technical scheme, the blanking control mechanism includes a closure block, a control rod, a connecting seat, a docking interface and a driving mechanism;

[0013] The closure block is arranged above the blanking groove to shield the blanking groove;

[0014] The control rod is fixed above the closure block to control the vertical movement of the closure block;

[0015] The connecting seat is arranged above the control rod, and the control rod and the connecting seat are slidably connected;

[0016] The docking interface is opened in the inner side of the first mounting seat and the second mounting seat, and the docking interface and the end of the connecting seat are inserted and matched;

[0017] The driving mechanism is connected with the control rod to drive the movement of the control rod.

[0018] Further optimization of the technical scheme, the driving mechanism includes a control panel, a driving block and a telescopic device;

[0019] The control panel is fixed to the upper end of the control rod, and the end of the control panel penetrates the end of the connecting seat;

[0020] The driving block is arranged inside the first mounting seat and the second mounting seat, and the inner side of the driving block is provided with a connecting groove, and the control panel and the connecting groove form a concave-convex matching structure;

[0021] The telescopic device is connected with the driving block to control the vertical movement of the driving block.

[0022] Further optimization of the technical scheme, the middle part of the control rod is provided with a heating rod, the circuit of the heating rod is connected through the control panel and the driving block, and the driving block is connected with the transmission line outside to output the circuit.

[0023] Further optimization of the technical scheme, the length of the connecting seat is greater than the outer diameter of the core, and the connecting seat is made of polytetrafluoroethylene material.

[0024] Further optimization of the technical scheme, the upper side of the control rod is provided with a self-limiting mechanism to limit the control rod after the connecting seat is disconnected from the driving block.

[0025] Further optimization of the technical scheme, the self-limiting mechanism includes a limiting block, a linkage plate, a movable plate and a return spring;

[0026] The limiting block is arranged inside the control rod and slidably connected with the control rod;

[0027] Linkage plate, fixed on the inner side of the limiting block to control the movement of the limiting block;

[0028] Movable plate, fixed on the outer side of the linkage plate, and the outer end of the movable plate penetrates the outer end of the control plate;

[0029] Reset spring, connected with the control plate to provide outward thrust for the control plate.

[0030] Compared with the prior art, the beneficial effects of the present application are:

[0031] The first mounting seat and the second mounting seat are detachably connected with the mouthpiece, and the heating module is located inside the mouth cover, so that the heat can be transmitted faster, the heat dissipation can be reduced, the mouthpiece can be taken out after the mouth cover is separated, and the blockage in the mouthpiece and the mouth cover can be cleaned or the mouthpiece can be replaced, so that the mouthpiece can be adapted to various recycled plastics.

[0032] The opening and closing of the feeding groove can be controlled by the movement of the closing block, so that the injection molding is controlled, and the heating rod is arranged in the control rod above the closing block, which can heat the injection plastic from the inside, so that the injection plastic can be heated faster and more uniformly, and the subsequent injection stability is ensured.

[0033] The connecting seat, the mouthpiece, the first mounting seat and the second mounting seat are detachably connected, the connecting seat can be detached from the mouthpiece, the closing block can be taken out, and the connecting seat and the closing block can be used after the new mouthpiece is replaced, which is more environmentally friendly and energy-saving, and the inside of the closing block is not blocked, so that the subsequent cleaning is more convenient.

[0034] The first mounting seat and the second mounting seat are stably and tightly spliced by the connection between the connecting piece and the connecting cap, and the heating modules in the mouth cover can be connected with each other after splicing by cooperating with the conductive docking mechanism, so that they can be uniformly and stably controlled through the control circuit.

[0035] The movement of the control rod can be limited by the connection between the limiting block and the connecting seat, so that the position of the control rod remains stable after the connecting seat is detached, the accuracy of the subsequent docking position is ensured, and the limiting effect of the limiting block is also released after the connecting seat is installed, which does not affect the movement of the closing block driven by the control rod. DETAILED DESCRIPTION

[0036] Figure 1 It is a three-dimensional structure diagram of the present application.

[0037] Figure 2 It is a bottom view structure diagram of the present application.

[0038] Figure 3 It is a top view structure diagram of the present application.

[0039] Figure 4 Split structure schematic diagram of the present application.

[0040] Figure 5 The head cover of the present application is a three-dimensional structure schematic diagram.

[0041] Figure 6 The main section structure schematic diagram of the present application.

[0042] Figure 7 The main section structure schematic diagram of the present application.

[0043] Figure 8 The connecting seat of the present application is a three-dimensional structure schematic diagram.

[0044] Figure 9 The main section structure schematic diagram of the present application.

[0045] Figure 10 The driving block and control board of the present application is a docking structure schematic diagram.

[0046] In the figure: 1, the first mounting seat; 2, the second mounting seat; 3, the nozzle cover; 4, the terminal; 5, the nozzle core; 6, the heating module; 7, the docking piece; 8, the connecting cap; 9, the blanking groove; 10, the closure block; 11, the control rod; 12, the heating rod; 13, the connecting seat; 14, the docking port; 15, the control board; 16, the driving block; 1601, the connecting groove; 17, the telescopic device; 18, the limiting block; 19, the linkage plate; 20, the movable plate; 21, the reset spring. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0048] Embodiment one: the present application provides the following technical solutions: a hot nozzle structure for hot runner mold, as shown in Figures 1-7As shown, the installation mechanism connected with the flow channel includes a first mounting seat 1 and a second mounting seat 2, and the first mounting seat 1 and the second mounting seat 2 are distributed in left-right symmetry, and the outer side of the first mounting seat 1 is provided with a connecting positioning mechanism to control the connection of the first mounting seat 1 and the second mounting seat 2, and the inner side of the first mounting seat 1 and the inner side of the second mounting seat 2 are both provided with a nozzle cover 3, which is in a closed structure after docking, and the inner side of the nozzle cover 3 is provided with a heating module 6, and the inner side of the nozzle cover 3 is provided with a nozzle core 5, and the upper end of the nozzle core 5 and the inside of the nozzle cover 3 are communicated with each other, and the inner side of the nozzle cover 3 is fixed with a ring body for providing upper end positioning for the nozzle core 5, and the inside of the nozzle core 5 is provided with a discharging groove 9, and the upper side of the discharging groove 9 is provided with a discharging control mechanism.

[0049] The first mounting seat 1 and the second mounting seat 2 are detachably arranged, and the nozzle core 5 can be disassembled or replaced after the first mounting seat 1 and the second mounting seat 2 are detached, as shown in Figure 4 As shown, after the nozzle core 5 is installed, the upper end of the nozzle core 5 is positioned by the ring body on the inner side of the nozzle cover 3, and the lower sharp end protrudes from the nozzle cover 3, and during subsequent injection molding, the material is heated by the heating module 6 on the inner side of the nozzle cover 3, so that it is heated faster, and at the same time, the outer part of the nozzle cover 3 can be made of heat preservation material to reduce heat dissipation.

[0050] Example two: based on example one, as shown in Figures 4-7 Further disclosed is that the abutting portion of the first mounting seat 1 and the second mounting seat 2 is provided with a conductive abutting mechanism, so that the circuit of the heating module 6 on the inner side of the first mounting seat 1 and the inner side of the second mounting seat 2 is communicated, and the outer side of the first mounting seat 1 is provided with a wire head 4 for connecting an external control wire harness, the connecting positioning mechanism includes an abutting piece 7 and a connecting cap 8, the abutting piece 7 is fixed on the right side of the first mounting seat 1 and penetrates through the inside of the second mounting seat 2, the connecting cap 8 is arranged at the right end of the abutting piece 7, and a threaded connection is formed between the connecting cap 8 and the abutting piece 7, the nozzle core 5 between the discharging control mechanism is detachably connected, and the upper end of the discharging control mechanism is detachably mounted on the inner side of the first mounting seat 1 and the second mounting seat 2.

[0051] When the first mounting seat 1 and the second mounting seat 2 are abutted, in combination with Figure 2 and Figure 4 As shown, the abutting piece 7 on the first mounting seat 1 can pass through the second mounting seat 2, and then the connecting cap 8 and the abutting piece 7 are connected, the connecting cap 8 is rotated, the first mounting seat 1 and the second mounting seat 2 are pressed tightly, the splicing is stable, and at the same time, the circuits of the two groups of heating modules 6 on the nozzle cover 3 after splicing are also communicated, which is convenient for subsequent unified control

[0052] Example three: based on example one, as shown in Figures 7-10As shown, further disclosed are the blanking control mechanism, which comprises a closing block 10, a control rod 11, a connecting seat 13, a docking interface 14 and a driving mechanism. The closing block 10 is arranged above the blanking groove 9 to shield the blanking groove 9. The control rod 11 is fixed above the closing block 10 to control the vertical movement of the closing block 10. The connecting seat 13 is arranged above the control rod 11, and the control rod 11 and the connecting seat 13 are slidably connected. The docking interface 14 is arranged inside the first mounting seat 1 and the second mounting seat 2, and the docking interface 14 and the end of the connecting seat 13 are inserted and matched. The driving mechanism is connected with the control rod 11 to drive the movement of the control rod 11. The driving mechanism comprises a control plate 15, a driving block 16 and a telescopic device 17. The control plate 15 is fixed at the upper end of the control rod 11, and the end of the control plate 15 penetrates the end of the connecting seat 13. The driving block 16 is arranged inside the first mounting seat 1 and the second mounting seat 2, and a connecting groove 1601 is arranged inside the driving block 16. The control plate 15 and the connecting groove 1601 form a concave-convex matching structure. The telescopic device 17 is connected with the driving block 16 to control the vertical movement of the driving block 16. The middle part of the control rod 11 is provided with a heating rod 12. The circuit of the heating rod 12 is connected with the control plate 15 and the driving block 16. The driving block 16 is connected with a transmission line outside to output the circuit. The length of the connecting seat 13 is greater than the outer diameter of the core 5, and the connecting seat 13 is made of polytetrafluoroethylene material. A self-limiting mechanism is arranged above the control rod 11 to limit the control rod 11 after the connecting seat 13 is separated from the driving block 16. The self-limiting mechanism comprises a limiting block 18, a linkage plate 19, a movable plate 20 and a return spring 21. The limiting block 18 is arranged inside the control rod 11 and slidably connected with the control rod 11. The linkage plate 19 is fixed inside the limiting block 18 to control the movement of the limiting block 18. The movable plate 20 is fixed outside the linkage plate 19, and the outer end of the movable plate 20 penetrates the outer end of the control plate 15. The return spring 21 is connected with the control plate 15 to provide an outward thrust for the control plate 15.

[0053] The heating rod 12 in the control rod 11 can heat the material in the core 5. The circuit of the heating rod 12 can be connected with the control plate 15 and the driving block 16. When the movement of the closing block 10 needs to be controlled, the control rod 11 is moved to the left or right to control the movement of the closing block 10. Figure 6 and Figure 9 As shown, the telescopic device 17 can be used to control the upward movement of the driving block 16. The driving block 16 drives the control plate 15 to move, and the control plate 15 drives the closing block 10 to move through the control rod 11, so as to open the blanking groove 9. When it needs to be closed, the telescopic device 17 can be controlled to shrink downward. When the core 5 needs to be disassembled subsequently, the first mounting seat 1 and the second mounting seat 2 can be separated first, and then the connecting seat 13 can be pulled out from the docking interface 14. Figure 10As shown, after the connecting seat 13 is taken out from the docking port 14, the connection between the connecting groove 1601 and the control plate 15 is released, the extrusion force on the movable plate 20 is released, the reset spring 21 pushes the movable plate 20 to drive the linkage plate 19 and the limiting block 18 to move outward, the limiting block 18 contacts the connecting seat 13, the movement of the control rod 11 is limited, and the docking position of the control plate 15 and the connecting groove 1601 is kept consistent when the subsequent connecting seat 13 is installed.

[0054] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0055] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "arranged", "mounted" and the like connecting words should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A hot nozzle structure for a hot runner mold, comprising a mounting mechanism connected with a runner; characterized in that The mounting mechanism comprises a first mounting seat (1) and a second mounting seat (2), and the first mounting seat (1) and the second mounting seat (2) are symmetrically distributed, and the outer side of the first mounting seat (1) is provided with a connecting positioning mechanism to control the connection of the first mounting seat (1) and the second mounting seat (2), the inner side of the first mounting seat (1) and the inner side of the second mounting seat (2) are provided with a nozzle cover (3), the nozzle cover (3) is in an enclosed structure after being connected, and a heating module (6) is mounted on the inner side of the nozzle cover (3), the inner side of the nozzle cover (3) is provided with a nozzle core (5), the upper end of the nozzle core (5) and the inside of the nozzle cover (3) are in communication with each other, and the inner side of the nozzle cover (3) is fixed with a ring body for providing positioning for the upper end of the nozzle core (5), and the inside of the nozzle core (5) is provided with a discharging groove (9), and the upper side of the discharging groove (9) is provided with a discharging control mechanism; The discharging control mechanism comprises a closing block (10), a control rod (11), a connecting seat (13), a connecting interface (14) and a driving mechanism; The closing block (10) is arranged above the discharging groove (9) to shield the discharging groove (9); The control rod (11) is fixed above the closing block (10) to control the vertical movement of the closing block (10); The connecting seat (13) is arranged above the control rod (11), and the control rod (11) and the connecting seat (13) are in sliding connection; The connecting interface (14) is arranged on the inner side of the first mounting seat (1) and the second mounting seat (2), and the connecting interface (14) and the end of the connecting seat (13) are in plug-in cooperation; The driving mechanism is connected with the control rod (11) to drive the movement of the control rod (11); The driving mechanism comprises a control plate (15), a driving block (16) and a telescopic device (17); The control plate (15) is fixed on the upper end of the control rod (11), and the end of the control plate (15) penetrates the end of the connecting seat (13); The driving block (16) is arranged in the first mounting seat (1) and the second mounting seat (2), and the inner side of the driving block (16) is provided with a connecting groove (1601), and the control plate (15) and the connecting groove (1601) form a concave-convex cooperation structure; The telescopic device (17) is connected with the driving block (16) to control the vertical movement of the driving block (16).

2. The hot nozzle structure for a hot- flow die according to claim 1, wherein: The first mounting seat (1) and the second mounting seat (2) are provided with a conductive connecting mechanism at the connecting position, so that the heating module (6) circuits in the inner side of the first mounting seat (1) and the inner side of the second mounting seat (2) are in communication, and the outer side of the first mounting seat (1) is provided with a terminal (4) for connecting an external control wire harness.

3. The hot nozzle structure for a hot- flow die according to claim 1, wherein: The connecting positioning mechanism comprises a connecting piece (7) and a connecting cap (8); The connecting piece (7) is fixed on the right side of the first mounting seat (1), and penetrates the inside of the second mounting seat (2); The connecting cap (8) is arranged on the right end of the connecting piece (7), and the connecting cap (8) and the connecting piece (7) are in threaded connection.

4. The hot nozzle structure for a hot- flow die according to claim 1, wherein: The blanking control mechanism bit core (5) is detachably connected, and the upper end of the blanking control mechanism is detachably installed on the inner side of the first mounting seat (1) and the second mounting seat (2).

5. The hot nozzle structure for a hot- flow die of claim 1, wherein: The middle part of the control rod (11) is provided with a heating rod (12), and the circuit of the heating rod (12) is connected through the control panel (15) and the driving block (16). The driving block (16) is externally connected with a transmission line to output the circuit.

6. The hot nozzle structure for a hot- flow die according to claim 4, wherein: The length of the connecting seat (13) is greater than the outer diameter of the bit core (5), and the connecting seat (13) is made of polytetrafluoroethylene material.

7. The hot nozzle structure for a hot- flow die according to claim 5, wherein: The upper part of the control rod (11) is provided with a self-limiting mechanism, which limits the control rod (11) after the connecting seat (13) is disconnected from the driving block (16).

8. The hot nozzle structure for a hot- flow die according to claim 7, wherein: The self-limiting mechanism comprises a limiting block (18), a linkage plate (19), a movable plate (20) and a reset spring (21). The limiting block (18) is arranged inside the control rod (11) and is in sliding connection with the control rod (11). The linkage plate (19) is fixed to the inner side of the limiting block (18) to control the movement of the limiting block (18). The movable plate (20) is fixed to the outer side of the linkage plate (19), and the outer end of the movable plate (20) penetrates the outer end of the control panel (15). The reset spring (21) is connected with the control panel (15) to provide an outward pushing force for the control panel (15).

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