Internal heating type hot runner nozzle

Abstract

The utility model provides an internal heating type hot runner nozzle which comprises a nozzle body, the nozzle body is composed of a nozzle head, a nozzle seat and a connecting seat, the nozzle head, the nozzle seat and the connecting seat are sequentially communicated, the connecting seat is in threaded connection with the connecting end of a charging barrel, and one end of the inner wall of the nozzle seat is movably connected with a first limiting block. A second limiting block is arranged at the end, away from the nozzle opening, of the nozzle head, a heating assembly is arranged in the nozzle base, the two ends of the heating assembly abut against the first limiting block and the second limiting block respectively, the heating assembly is composed of a heat conduction shell and three heating plates, and the heat conduction shell is of a three-fork-shaped structure and is arranged in the length direction of the nozzle body; according to the utility model, the heat conduction shell with the three-fork-shaped structure and the three heating plates are arranged, and the three heating plates are arranged at equal intervals in the circumferential direction, so that heat on the heating plates is in full contact with melt plastic, and the heating effect on the melt plastic is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding machine nozzle technical field especially relates to a internal heating hot runner nozzle. BACKGROUND

[0002] Injection molding machine nozzle is the important part on injection molding machine, main function is to melt the plastic injection into the mould, form the plastic product required, and the design and performance of nozzle directly influence the efficiency of injection process and the quality of finished product, internal heating hot runner nozzle is a kind of injection molding machine nozzle, and the heater is installed in the middle of the flow channel, the nozzle has the advantages such as high thermal efficiency, good heat transfer effect, the heater of the existing internal heating hot runner nozzle is usually strip-shaped, and is arranged in the middle of the flow channel, since the heat is concentrated in the middle of the heater, the heat is not effectively transmitted to the melt plastic, and the heating effect for the melt plastic is limited. SUMMARY

[0003] The utility model solves the problem of the limited heat transfer effect of the existing heater.

[0004] In order to solve the above technical problem, the utility model provides a internal heating hot runner nozzle, including nozzle body, the nozzle body is by nozzle head, nozzle seat and connecting seat constitutes, nozzle head, nozzle seat and connecting seat inside are penetrated in proper order, and the connecting seat is connected with the threaded connection of cylinder connecting end, and the first limit block is movably connected to the inner wall one end of nozzle seat, and the second limit block is arranged at the end away from the nozzle of nozzle head, and the heating assembly is arranged in the inside of nozzle seat, and the heating assembly is respectively abutted with the first limit block and the second limit block at both ends, and the heating assembly is constituted by heat conduction shell and three heating plates, the heat conduction shell is three-pronged structure and is arranged along the length direction of nozzle body, and the three heating plates are arranged in the heat conduction shell with equidistant interval in the circumferential direction of nozzle body, and the mounting hole is set up on the nozzle seat, and the lead is connected to one end of heating plate and extends to the outside through mounting hole, and the heat conduction shell is sealingly connected with mounting hole.

[0005] Preferably, the heat conduction shell is provided with three lead holes equidistantly spaced apart in the circumferential direction of the nozzle body, and the three lead holes correspond to the leads of the three heating plates respectively, and the three lead holes are sealingly connected with the mounting hole.

[0006] Preferably, the number of mounting holes is three and corresponds to the three lead holes respectively, and the nozzle seat surface is provided with three fixed shells, and the three fixed shells are respectively covered on the surfaces of the three leads.

[0007] Preferably, one end of the nozzle head is provided with a mounting block, one end of an elastic member is connected in the mounting block, and the second limit block is connected to the end of the elastic member away from the mounting block.

[0008] Preferably, the nozzle seat is provided with a mounting groove at one end away from the connecting seat, which is threadedly connected with the nozzle head.

[0009] Preferably, the mounting block is internally provided with a fixing groove along the circumferential direction, and the opening faces the second limiting block, and part of the elastic member is arranged in the fixing groove, and the second limiting block is slidingly connected in the mounting groove.

[0010] Preferably, the elastic member is a metal elastic sheet.

[0011] Preferably, the first limiting block is threadedly connected with a threaded structure provided in the inner wall of the nozzle seat.

[0012] Preferably, the outer portion of the nozzle seat and the inner wall of the first limiting block are provided with a hexagonal mounting section.

[0013] Preferably, the first limiting block and the second limiting block are circular rings.

[0014] Compared with the prior art, the utility model provides a kind of inner heating hot runner nozzle, with following

[0015] Beneficial effects:

[0016] 1, the utility model discloses a heat-conducting shell and three heating plates of trifid structure are set, heat is transmitted to the inside of nozzle seat by heat-conducting shell, by setting trifid structure, three heating plates are equidistantly spaced in the circumferential direction, so that the heat on heating plate and melt plastic are fully contacted, effectively improve the heating effect of melt plastic, compared with prior art inner heating hot runner nozzle has better heat transfer effect, solve the problem of limited heat transfer effect of existing heater. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the main body structure schematic diagram of the utility model;

[0018] Figure 2 It is the main body cut structure explosion drawing of the utility model;

[0019] Figure 3 It is the main body structure cut view of the utility model;

[0020] Figure 4 It is the heating assembly structure schematic diagram of the utility model.

[0021] In the drawing: 1, nozzle body;101, nozzle head;102, nozzle seat;103, connecting seat;2, first limiting block;3, second limiting block;4, heating assembly;41, heat-conducting shell;42, heating plate;5, mounting hole;6, lead wire;7, lead wire hole;8, fixed shell;9, mounting block;10, elastic member;11, mounting groove;12, fixing groove. DETAILED DESCRIPTION

[0022] The utility model relates to a kind of inner heating hot runner nozzle, as shown in figure Figures 1-4 It includes nozzle body 1, the nozzle body 1 is made of nozzle head 101, nozzle seat 102 and connecting seat 103, nozzle head 101, nozzle seat 102 and connecting seat 103 inside are sequentially penetrated, connecting seat 103 is threadedly connected with barrel connecting end, first limit block 2 is movably connected with the inner wall one end of nozzle seat 102, second limit block 3 is provided at the end of nozzle head 101 away from spout, heating assembly 4 is provided in the inside of nozzle seat 102, heating assembly 4 two ends are respectively abutted with first limit block 2 and second limit block 3, heating assembly 4 is made of heat-conducting shell 41 and three heating plates 42, heat-conducting shell 41 is three-pronged structure and is arranged along the length direction of nozzle body 1, three heating plates 42 are arranged equidistantly in the inside of heat-conducting shell 41 with the circumferential direction of nozzle body 1, mounting hole 5 is opened on nozzle seat 102, lead 6 is connected with one end of heating plate 42 and extends to outside through mounting hole 5, heat-conducting shell 41 is sealingly connected with mounting hole 5, nozzle body 1 is formed by setting nozzle head 101, nozzle seat 102 and connecting seat 103, barrel connecting end is connected with connecting seat 103, barrel injects melt plastic into connecting seat 103, melt plastic sequentially penetrates connecting seat 103, nozzle seat 102, nozzle head 101, and then is injected into mold from spout, heat-conducting shell 41 can be placed into the inside of nozzle seat 102 from one end of connecting seat 103 or one end of nozzle head 101, heating assembly 4 is fixed firmly in nozzle seat 102 by abutting from two ends of heating assembly 4 with first limit block 2 and second limit block 3, the temperature of heating plate 42 is raised by connecting lead 6 with external power supply, heat is transmitted to the inside of nozzle seat 102 by heat-conducting shell 41, the heat on heating plate 42 is fully contacted with melt plastic by setting three-pronged structure and arranging three heating plates 42 equidistantly in the circumferential direction, effectively improve the heating effect on melt plastic, compared with the prior art, the heat transfer effect of the inner heating hot runner nozzle is better, and the problem of limited heat transfer effect of the existing heater is solved.

[0023] In the embodiment of the utility model, three lead holes 7 are equidistantly and separately arranged in the circumferential direction of nozzle body 1, three lead holes 7 correspond to the corresponding lead 6 of three heating plates 42 respectively, three lead holes 7 are sealingly connected with mounting hole 5, lead 6 is led out to the outside of nozzle body 1 through lead hole 7 and mounting hole 5 by setting lead hole 7, and the normal flow of melt plastic in the inside of nozzle seat 102 is ensured by sealingly connecting lead hole 7 and mounting hole 5.

[0024] The number of the mounting holes 5 is three and respectively corresponds to three lead holes 7, the nozzle seat 102 is provided with three fixed shells 8 on the surface, and the three fixed shells 8 are respectively covered on the surface of the three leads 6, the fixed shell 8 is arranged, and the lead 6 is fixed.

[0025] The embodiment of the utility model, nozzle head 101 one end is provided with mounting block 9, mounting block 9 inside is connected with the one end of elastic part 10, the one end of elastic part 10 is connected with second limit block 3 away from mounting block 9, by setting mounting block 9 and elastic part 10, elastic part 10 is fixed in the inner wall of nozzle head 101 through mounting block 9, the buffering and damping effect of second limit block 3 in the axial direction of nozzle body 1 is improved through elastic part 10, and the close connection effect of heating assembly 4 is improved, and the stable operation of system is ensured.

[0026] The embodiment of the utility model, nozzle seat 102 is away from the one end of connecting seat 103 and is provided with installation groove 11 connected with nozzle head 101 screw, by setting installation groove 11, nozzle head 101 is connected with nozzle seat 102 screw through installation groove 11, and the stability of the connection of nozzle head 101 and nozzle seat 102 is improved.

[0027] The embodiment of the utility model, mounting block 9 is internally provided with fixed groove 12 along the circumferential direction, and the opening is towards second limit block 3, part of elastic part 10 is arranged in fixed groove 12, and second limit block 3 is slidingly connected in mounting groove 11, by setting fixed groove 12, elastic part 10 is arranged in fixed groove 12, and the stability of the installation of elastic part 10 is improved.

[0028] The embodiment of the utility model, the elastic part 10 is metal elastic sheet, by setting metal elastic sheet, the vibration and impact that heating assembly 4 receives are buffered, and the abutting fixing of heating assembly 4 is convenient.

[0029] The embodiment of the utility model, first limit block 2 is connected with the threaded structure of the inner wall of nozzle seat 102 screw, by setting the above structure, first limit block 2 and the inner wall of nozzle seat 102 realize detachable connection, so as to facilitate the installation and dismounting of heating assembly 4, and first limit block 2 moves in the axial direction of nozzle body 1, so that first limit block 2 and heating assembly 4 abut.

[0030] The embodiment of the utility model, the outer portion of nozzle seat 102 and the inner wall of first limit block 2 are provided with hexagonal mounting section, by setting the above structure, the installation and dismounting of nozzle body 1 and barrel connecting end can be facilitated, and the installation and dismounting of first limit block 2 and nozzle seat 102 inner wall can be facilitated.

[0031] The first limiting block 2 and the second limiting block 3 are circular annular, the above structure is arranged, and normal flow of the melt plastic is guaranteed.

[0032] In use, first, the heating assembly 4 and the nozzle body 1 are fixed inside, the heat-conducting shell 41 is placed into the nozzle seat 102 from one end of the connecting seat 103 or one end of the nozzle head 101, the lead hole 7 and the mounting hole 5 are corresponded, the lead wire 6 is passed through the lead hole 7 and the mounting hole 5 to the outside of the nozzle body 1, the lead wire 6 is fixed on the surface of the nozzle seat 102 by the fixed shell 8, then the first limiting block 2 is screwed with the inner wall screw structure of the nozzle seat 102, the nozzle head 101 is screwed with the mounting groove 11, one end of the second limiting block 3 abuts against the heat-conducting shell 41 and compresses the elastic piece 10, then the connecting seat 103 and the connecting end of the barrel are screwed, the barrel injects the melt plastic into the connecting seat 103, the melt plastic sequentially penetrates the connecting seat 103, the nozzle seat 102 and the nozzle head 101, and then is injected into a mold from a nozzle, the lead wire 6 is connected with an external power supply, the heating plate 42 is powered to heat, and the heating plate 42 transmits heat to the flow channel through the heat-conducting shell 41, so that the melt plastic flowing through the heat-conducting shell 41 in the flow channel is heated, and the melt plastic passes through the heating assembly 4 and enters the nozzle head 101.

[0033] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model.In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model.Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.

Claims

1. An internal hot hot-runner nozzle comprising a nozzle body (1), characterized in that, The nozzle body (1) is composed of a nozzle head (101), a nozzle seat (102) and a connecting seat (103), the nozzle head (101), the nozzle seat (102) and the connecting seat (103) are sequentially penetrated inside, the connecting seat (103) is threadedly connected with the barrel connecting end, the first limiting block (2) is movably connected with the inner wall of the nozzle seat (102) at one end, the second limiting block (3) is arranged on the nozzle head (101) away from the nozzle, the heating assembly (4) is arranged in the nozzle seat (102), the heating assembly (4) is abutted with the first limiting block (2) and the second limiting block (3) at both ends, the heating assembly (4) is composed of a heat-conducting shell (41) and three heating plates (42), the heat-conducting shell (41) is a three-prong structure and is arranged along the length direction of the nozzle body (1), the three heating plates (42) are arranged in the heat-conducting shell (41) at equidistant intervals in the circumferential direction of the nozzle body (1), the mounting hole (5) is arranged on the nozzle seat (102), the lead wire (6) is connected with one end of the heating plate (42) and extends to the outside through the mounting hole (5), and the heat-conducting shell (41) is sealingly connected with the mounting hole (5).

2. An internal hot thermoflow nozzle according to claim 1, characterized in that: The heat-conducting shell (41) is provided with three lead wire holes (7) at equidistant intervals in the circumferential direction of the nozzle body (1), the three lead wire holes (7) correspond to the three lead wires (6) corresponding to the three heating plates (42) respectively, and the three lead wire holes (7) are sealingly connected with the mounting hole (5).

3. A hot internal hot- flow nozzle as claimed in claim 2, characterized in that: The number of the mounting hole (5) is three and corresponds to the three lead wire holes (7) respectively, the nozzle seat (102) is provided with three fixing shells (8) on the surface, and the three fixing shells (8) are respectively arranged on the surfaces of the three lead wires (6).

4. A flow channeling nozzle according to claim 1, wherein: One end of the nozzle head (101) is provided with the mounting block (9), one end of the elastic member (10) is connected in the mounting block (9), and the second limiting block (3) is connected with the other end of the elastic member (10) away from the mounting block (9).

5. A flow channeling nozzle according to claim 4, wherein: One end of the nozzle seat (102) away from the connecting seat (103) is provided with the mounting groove (11) threadedly connected with the nozzle head (101).

6. A flow channeling nozzle according to claim 5, wherein: The mounting block (9) is provided with the fixing groove (12) in the circumferential direction in the inside, and the opening faces the second limiting block (3), part of the elastic member (10) is arranged in the fixing groove (12), and the second limiting block (3) is slidingly connected in the mounting groove (11).

7. A flow channeling nozzle according to claim 4, wherein: The elastic member (10) is a metal elastic sheet.

8. A flow channel nozzle according to claim 1 wherein: The first limiting block (2) is threadedly connected with the threaded structure arranged on the inner wall of the nozzle seat (102).

9. A flow channel nozzle according to claim 1 wherein: The outer part of the nozzle seat (102) and the inner wall of the first limiting block (2) are provided with a hexagonal mounting section.

10. A hot internal hot- flow nozzle as claimed in claim 1, characterized in that: The first limiting block (2) and the second limiting block (3) are circular rings.

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