A nozzle for an injection molding machine

Abstract

The utility model discloses a kind of pouring head for injection molding machine, including pouring head main part, the heating shell is equipped in pouring head main part outer end, the heating coil is equipped in heating shell, the heating coil is arranged around pouring head main part, the heat dissipation shell is equipped in heating shell outer end, the heat dissipation shell is equipped with heat dissipation opening, the heat dissipation shell is rotatably connected with the closure cap, the closure cap is matched with heat dissipation opening, the pouring head main part one end is equipped with mounting frame, the mounting bolt is equipped on the mounting frame, the heating shell side end is equipped with insert block, the limit groove is opened in the insert block, the insert slot is opened in the mounting frame, the insert block and insert slot, the limit block is rotatably connected and is equipped in the insert slot, the adjusting bolt is equipped on the mounting frame, the adjusting bolt is matched with mounting frame, and is rotatably connected with limit block, the limit block is matched with limit groove, the equipment is convenient to heat and heat dissipation, and dismounting portable, it is convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of injection molding equipment technology, and more specifically, it relates to a pouring head for an injection molding machine. Background Technology

[0002] An injection molding machine is a device that heats plastic materials and injects them into various molds to produce plastic products of different shapes. The injection head is the structure at the front end of the injection molding machine that discharges the material, and it is an important structure that enables the injection molding machine to cooperate with the mold.

[0003] Common injection molding machines typically have internal heating equipment to heat the added plastic material before it exits through the sprue head. To prevent premature cooling and solidification of the material, heating coils and other heating structures are also installed on the sprue head to prevent premature heat loss. However, the structure of common sprue heads is relatively simple. The heat generated by the heating coils is not only transferred to the material inside the sprue head but also leaks out through the outer shell, resulting in heat waste. If insulation structures were added to reduce heat loss from the outside, the sprue head would remain at a high temperature after the injection molding machine stops operating, preventing immediate removal and requiring operators to wait for a considerable period. The injection head needs time to cool down before subsequent operations can proceed, such as disassembling and assembling it. Excessive waiting time is inconvenient for workers. Furthermore, common injection heads are usually bolted to the injection molding machine, requiring tools for installation and disassembling multiple bolts, making operation inconvenient. Replacing the injection head can affect worker efficiency and equipment usability. Additionally, typical injection heads have simple structures and unobstructed discharge points; during injection, material may leak from the injection head after leaving the mold, resulting in material waste and affecting the work environment. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a gating head for injection molding machines to solve the technical problems mentioned in the background art, such as the simple structure of the gating head and its inconvenience in use.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a casting head for an injection molding machine, comprising a casting head body, a heating shell provided at the outer end of the casting head body, a heating coil provided inside the heating shell, the heating coil being arranged around the casting head body, a heat dissipation shell provided at the outer end of the heating shell, a heat dissipation opening provided on the heat dissipation shell, and a sealing cover rotatably connected to the heat dissipation shell, the sealing cover cooperating with the heat dissipation opening;

[0008] The main body of the pouring head is provided with a mounting frame at one end, and mounting bolts are provided on the mounting frame. The heating shell is provided with a plug block at one side end, and a limiting groove is provided on the plug block. A socket is provided on the mounting frame. The plug block and the socket are slidably connected. A limiting block is provided in the socket. An adjusting bolt is provided on the mounting frame. The adjusting bolt cooperates with the mounting frame and is rotatably connected with the limiting block. The limiting block cooperates with the limiting groove.

[0009] The present invention is further configured such that a sliding groove is provided at the front end of the pouring head body, a sliding rod is provided in the sliding groove, a return spring is provided between the sliding rod and the inner wall of the sliding groove, and a sealing head is provided between the sliding rods to reduce material leakage and save resources.

[0010] The present invention is further configured such that the sliding rod is provided with a connecting strip, the connecting strip is connected to the closed head, and the front end of the pouring head body is provided with a mating groove so that the pouring head is adapted to the mold.

[0011] The present invention is further configured such that heat insulation pads are provided on the inner sides of the heating shell, the heat dissipation shell and the sealing cover, and a heat-conducting wall is provided on the outer end of the pouring head body, so as to further reduce heat loss.

[0012] The present invention is further configured such that a sealing strip is provided on the inner side of the sealing cover, and a sealing groove is provided on the heat dissipation shell, wherein the sealing strip and the sealing groove cooperate to improve the sealing effect.

[0013] The present invention is further configured such that a limiting hook is rotatably connected to one end of the sealing cover, and a limiting frame is provided on the heat dissipation shell, wherein the limiting hook cooperates with the limiting frame to make the sealing stable.

[0014] The present invention is further configured such that the mounting frame has bolt holes and recessed grooves, both of which are engaged with mounting bolts to avoid structural interference with installation.

[0015] The present invention is further configured such that the limiting block is provided with a beveled head, and the limiting groove is provided with a beveled block, and the beveled head cooperates with the beveled block to make the installation more secure.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a gating head for injection molding machines, which has the following beneficial effects:

[0018] 1. Through the cooperation of the heating shell, heating coil, and pouring head body, the heating coil provides heating capacity, and the heating shell reduces heat loss, thereby reducing heat waste and improving heating effect. Furthermore, the cooperation of the heat dissipation shell, heat dissipation port, and sealing cover forms an openable and closable heat dissipation structure. When the pouring head body is working, the sealing cover blocks the heat dissipation port to ensure heat preservation. When cooling is required, the sealing cover is opened to expose the heat dissipation port, providing a heat dissipation structure to accelerate cooling, facilitating equipment use and improving work efficiency.

[0019] 2. A transition structure is provided through the cooperation of the mounting frame and mounting bolts, allowing the mounting frame to be fixed to the mounting structure on the injection molding machine. The mounting structure is provided through the cooperation of the insert block, mounting slot, limiting groove, and limiting block. The movement of the limiting block is controlled by the adjusting bolt. When installing the main body of the injection head, simply insert the insert block into the mounting slot and control the adjusting bolt to insert the limiting block into the limiting groove for fixation, thereby completing the installation of the main body of the injection head. The operation is convenient during disassembly and assembly, eliminating the need for cumbersome operations using tools and facilitating the work of workers.

[0020] 3. A driving structure is provided by the cooperation of a sliding groove, a sliding rod, and a return spring. When the pouring head body is engaged with the sliding rod, the sliding rod moves the closing head, allowing the pouring head body to perform normal injection. When the pouring head body is separated from the injection mold, the return spring pushes the sliding rod to move, causing the closing head to block the front end of the pouring head body, thereby preventing the leakage of plastic raw materials and reducing material waste. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the front structure of a casting head for an injection molding machine according to the present invention;

[0022] Figure 2 This is a schematic diagram of the assembly structure of the pouring head body and the mounting frame after separation in this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the heat dissipation shell and the pouring head body when the closed cover is opened in this utility model;

[0024] Figure 4 This is a cross-sectional view of the internal structure of the pouring head body and its cooperation with the heating coil in this utility model;

[0025] Figure 5 This is a cross-sectional view of the internal structure of the pouring head body and the heat-conducting wall in this utility model.

[0026] In the diagram: 1. Pouring head body; 2. Heating shell; 3. Heating coil; 4. Heat dissipation shell; 5. Heat dissipation port; 6. Sealing cover; 7. Mounting frame; 8. Mounting bolt; 9. Insertion block; 10. Limiting groove; 11. Insertion slot; 12. Limiting block; 13. Adjusting bolt; 14. Sliding groove; 15. Sliding rod; 16. Return spring; 17. Sealing head; 18. Connecting strip; 19. Mating groove; 20. Heat insulation pad; 21. Heat-conducting wall; 22. Sealing strip; 23. Sealing groove; 24. Limiting hook; 25. Limiting frame; 26. Bolt hole; 27. Recessed groove; 28. Angled head; 29. ​​Angled block. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] Please see Figure 1-5 A casting head for an injection molding machine includes a casting head body 1, a heating shell 2 at the outer end of the casting head body 1, a heating coil 3 inside the heating shell 2, the heating coil 3 surrounding the casting head body 1, a heat dissipation shell 4 at the outer end of the heating shell 2, a heat dissipation port 5 on the heat dissipation shell 4, and a sealing cover 6 rotatably connected to the heat dissipation shell 4, the sealing cover 6 cooperating with the heat dissipation port 5.

[0031] The main body 1 of the pouring head is provided with a mounting frame 7 at one end, and a mounting bolt 8 is provided on the mounting frame 7. The heating shell 2 is provided with a mounting block 9 at the side end, and a limiting groove 10 is provided on the mounting block 9. A mounting slot 11 is provided on the mounting frame 7. A limiting block 12 is slidably connected to the mounting block 9 and the mounting slot 11. An adjusting bolt 13 is provided on the mounting frame 7. The adjusting bolt 13 cooperates with the mounting frame 7 and is rotatably connected to the limiting block 12. The limiting block 12 cooperates with the limiting groove 10.

[0032] In this embodiment, when using the casting head body 1, the heating coil 3 operates to heat the casting head body 1, and the heating shell 2 covers the heating coil 3. At this time, the sealing cover 6 blocks the heat dissipation port 5 to prevent heat loss, thereby ensuring the heating effect. After the equipment finishes working, the sealing cover 6 is opened to expose the heat dissipation port 5. Through the heat dissipation structure provided by the heat dissipation shell 4 and the heat dissipation port 5, the heat inside the heating shell 2 is quickly dissipated, thereby rapidly cooling the casting head body 1.

[0033] More specifically, when using this casting head, first install the mounting frame 7 onto the injection molding equipment and fix it in place with the mounting structure of the injection molding machine using the mounting bolts 8. Then install the casting head body 1, insert the insert block 9 into the mounting slot 11, align the limiting groove 10 with the limiting block 12, and then control the rotation of the adjusting bolt 13 to engage with the mounting frame 7, pushing the limiting block 12 to move and insert it into the limiting groove 10, thus positioning the insert block 9 and completing the installation of the casting head body 1. When it is necessary to replace the casting head body 1, simply rotate the adjusting bolt 13, which is convenient for operation.

[0034] Please see Figures 1-5 As one method of preventing material leakage: a sliding groove 14 is provided at the front end of the pouring head body 1, a sliding rod 15 is provided in the sliding groove 14, a return spring 16 is provided between the sliding rod 15 and the inner wall of the sliding groove 14, and a sealing head 17 is provided between the sliding rods 15.

[0035] Specifically, when the injection head body 1 is engaged with the injection mold, it will contact the mold through the sliding rod 15. As the discharge part of the injection head body 1 engages with the receiving part of the mold, the sliding rod 15 will be squeezed into the sliding groove 14, thereby driving the closing head 17 to move. The closing head 17 moves into the injection head body 1, thereby providing space for the raw material to flow out and complete the injection molding. When the injection head body 1 is separated from the mold, the return spring 16 will push the sliding rod 15 to move, causing the sliding rod 15 to move the closing head 17 outward, so that the closing head 17 blocks the discharge part of the injection head body 1, preventing the raw material from leaking out.

[0036] Please see Figure 1 and Figure 2 As a further embodiment of the sliding rod: the sliding rod 15 is provided with a connecting strip 18, the connecting strip 18 is connected to the closed head 17, and the front end of the pouring head body 1 is provided with a mating groove 19.

[0037] Specifically, the sliding rod 15 moves the closed head 17 via the connecting strip 18, and the connecting strip 18 retracts into the mating groove 19 during movement to avoid affecting the fit with the mold.

[0038] Please see Figure 5As a further embodiment of the heating shell: the inner sides of the heating shell 2, the heat dissipation shell 4 and the sealing cover 6 are all provided with heat insulation pads 20, and the outer end of the pouring head body 1 is provided with a heat-conducting wall 21.

[0039] Specifically, the heat insulation pad 20 provides insulation, further slowing down heat dissipation, and the heat conduction wall 21 makes it easier for heat to be transferred to the interior of the pouring head body 1 to heat the raw materials.

[0040] Please see Figures 2-4 As a further embodiment of the sealing cover: a sealing strip 22 is provided on the inner side of the sealing cover 6, and a sealing groove 23 is provided on the heat dissipation shell 4, with the sealing strip 22 cooperating with the sealing groove 23.

[0041] Specifically, when the cover 6 is closed, the sealing strip 22 is inserted into the sealing groove 23, and the sealing structure is provided by the cooperation between the sealing strip 22 and the sealing groove 23.

[0042] Please see Figures 1-3 As a further embodiment of the sealing cover: a limiting hook 24 is rotatably connected to one end of the sealing cover 6, and a limiting frame 25 is provided on the heat dissipation shell 4, with the limiting hook 24 cooperating with the limiting frame 25.

[0043] Specifically, after the cover 6 is closed, the control hook 24 is rotated so that the hook 24 engages with the limit frame 25 and hooks onto the limit frame 25. The limit frame 25 prevents the hook 24 from moving, thereby keeping the cover 6 stable.

[0044] Please see Figure 1 and Figure 2 As a further embodiment of the mounting frame: the mounting frame 7 has bolt holes 26, and the bolt holes 26 have recessed grooves 27, both of which are engaged with mounting bolts 8.

[0045] Specifically, the structure is provided by bolt hole 26 and recessed groove 27 for mounting bolt 8, and the space provided by recessed groove 27 is for the nut structure of mounting bolt 8 to be recessed, so that the outer end of mounting frame 7 remains flat, which facilitates the installation of casting head body 1.

[0046] Please see Figure 4 and Figure 5 As a further implementation of the limiting block: the limiting block 12 is provided with a beveled head 28, and the limiting groove 10 is provided with a beveled block 29, with the beveled head 28 cooperating with the beveled block 29.

[0047] Specifically, when the limiting block 12 is inserted into the limiting slot 10, the inclined head 28 cooperates with the inclined block 29, and the pressing cooperation of the inclined surface causes the thrust of the limiting block 12 to be redirected, causing the insertion block 9 to move into the insertion slot 11, thus maintaining a tight and stable installation.

[0048] In summary, during the use or operation of the overall equipment:

[0049] When using the casting head equipment, the casting head installation process involves first installing the mounting frame 7 onto the injection molding machine and fixing it with the mounting structure of the injection molding machine using mounting bolts 8. The bolt holes 26 and recessed grooves 27 provide the structure for installing the mounting bolts 8. The recessed groove 27 provides space for the nut structure of the mounting bolts 8 to be recessed, keeping the outer end of the mounting frame 7 flat for easy installation of the casting head body 1. Then, the casting head body 1 is installed by inserting the mounting block 9 into the mounting slot 11, aligning the limiting groove 10 with the limiting block 12, and then controlling the adjusting screw... Rotating bolt 13 engages with mounting frame 7, pushing limiting block 12 to move and insert it into limiting groove 10, positioning insert block 9. When limiting block 12 is inserted into limiting groove 10, it engages with inclined block 29 via inclined head 28. The pressure of the inclined surface causes the thrust of limiting block 12 to be redirected, moving insert block 9 into mounting slot 11, maintaining a tight and stable installation, thus completing the installation of pouring head body 1. When it is necessary to replace pouring head body 1, simply rotate adjusting bolt 13 for easy operation.

[0050] The heating coil 3 heats the casting head body 1, and the heating shell 2 covers the heating coil 3. At this time, the sealing cover 6 blocks the heat dissipation port 5 to prevent heat loss. The heat insulation pad 20 provides insulation, further slowing down heat dissipation. The heat is transferred more easily to the inside of the casting head body 1 through the heat-conducting wall 21 to heat the raw materials, thus ensuring the heating effect. After the equipment finishes working, the sealing cover 6 is opened to expose the heat dissipation port 5. The heat dissipation structure provided by the heat dissipation shell 4 and the heat dissipation port 5 allows the heat inside the heating shell 2 to dissipate quickly, thereby rapidly cooling the casting head body 1. In addition, when the sealing cover 6 is closed, the sealing strip 22 is inserted into the sealing groove 23. The cooperation between the sealing strip 22 and the sealing groove 23 provides a sealing structure. After the sealing cover 6 is closed, the control hook 24 rotates, so that the control hook 24 cooperates with the control frame 25 and hooks onto the control frame 25. The control frame 25 prevents the movement of the control hook 24, thus keeping the sealing cover 6 stable and ensuring stable operation of the equipment.

[0051] When the injection head body 1 and the injection mold are used for injection molding, the sliding rod 15 contacts the mold. As the discharge part of the injection head body 1 mates with the receiving part of the mold, the sliding rod 15 is squeezed into the sliding groove 14. This causes the connecting strip 18 to move the sealing head 17, which moves into the injection head body 1. The connecting strip 18 retracts into the mating groove 19 during movement to avoid affecting the fit between the equipment and the mold, thus providing space for the raw material to flow out and complete the injection molding. When the injection head body 1 separates from the mold, the return spring 16 pushes the sliding rod 15 to move, causing the sliding rod 15 to move the sealing head 17 outward. This causes the sealing head 17 to block the discharge part of the injection head body 1, preventing the raw material from leaking out.

[0052] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gating head for an injection molding machine, comprising a gating head body (1), characterized in that: The outer end of the pouring head body (1) is provided with a heating shell (2), and a heating coil (3) is provided inside the heating shell (2). The heating coil (3) is arranged around the pouring head body (1). The outer end of the heating shell (2) is provided with a heat dissipation shell (4). A heat dissipation port (5) is opened on the heat dissipation shell (4). A sealing cover (6) is rotatably connected to the heat dissipation shell (4). The sealing cover (6) cooperates with the heat dissipation port (5). The pouring head body (1) has an installation frame (7) at one end, and an installation bolt (8) is provided on the installation frame (7). The heating shell (2) has an insertion block (9) at one side end, and a limiting groove (10) is provided on the insertion block (9). An installation slot (11) is provided on the installation frame (7). The insertion block (9) and the installation slot (11) are slidably connected. A limiting block (12) is provided in the installation slot (11). An adjusting bolt (13) is provided on the installation frame (7). The adjusting bolt (13) cooperates with the installation frame (7) and is rotatably connected with the limiting block (12). The limiting block (12) cooperates with the limiting groove (10).

2. The injection head for an injection molding machine according to claim 1, characterized in that: The front end of the pouring head body (1) is provided with a sliding groove (14), a sliding rod (15) is provided in the sliding groove (14), a return spring (16) is provided between the sliding rod (15) and the inner wall of the sliding groove (14), and a sealing head (17) is provided between the sliding rods (15).

3. The injection head for an injection molding machine according to claim 2, characterized in that: The sliding rod (15) is provided with a connecting strip (18), which is connected to the closed head (17). The front end of the pouring head body (1) is provided with a mating groove (19).

4. The injection head for an injection molding machine according to claim 1, characterized in that: The inner sides of the heating shell (2), the heat dissipation shell (4) and the sealing cover (6) are all provided with heat insulation pads (20), and the outer end of the pouring head body (1) is provided with a heat-conducting wall (21).

5. A gating head for an injection molding machine according to claim 4, characterized in that: The inner side of the closed cover (6) is provided with a sealing strip (22), and the heat dissipation shell (4) is provided with a sealing groove (23), and the sealing strip (22) cooperates with the sealing groove (23).

6. The injection head for an injection molding machine according to claim 5, characterized in that: One end of the closed cover (6) is rotatably connected to a limiting hook (24), and the heat dissipation shell (4) is provided with a limiting frame (25). The limiting hook (24) cooperates with the limiting frame (25).

7. The injection head for an injection molding machine according to claim 1, characterized in that: The mounting frame (7) has bolt holes (26) and recessed grooves (27) on the bolt holes (26). Both the bolt holes (26) and the recessed grooves (27) are fitted with mounting bolts (8).

8. The injection head for an injection molding machine according to claim 1, characterized in that: The limiting block (12) is provided with a beveled head (28), and the limiting groove (10) is provided with a beveled block (29). The beveled head (28) and the beveled block (29) cooperate with each other.

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