Injection head convenient to maintain

Abstract

The utility model relates to the technical field of injection molding machine manufacturing, in particular to an injection head convenient to maintain. One end of the outer side of the material guide cavity is fixedly provided with a nut, one end of the material guide cavity penetrates through the nut and is fixedly provided with a threaded connection pipe, the other end of the material guide cavity is connected with a nozzle in a sliding mode, sliding grooves are evenly formed in one end in the nozzle, limiting grooves are formed in the two ends in the material guide cavity, and a heating mechanism is arranged on the outer side of the material guide cavity. According to the injection head convenient to maintain, the nut is rotated through the wrench to enable the threaded connection pipe and the injection molding machine to be in threaded connection, the injection molding machine conveys molten materials into a mold through the material guide cavity and the nozzle, and when hot molten materials enter the cold material guide cavity, the molten materials are easily solidified on the inner wall of the material guide cavity; and at the moment, the solidified melt is dissolved through the heating mechanism, so that the melt is convenient to recycle.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machine manufacturing, in particular to an injection head convenient for maintenance. Background Art

[0002] The nozzle head is generally connected to the discharge port of the injection molding machine screw. The heated and molten material enters the mold from the nozzle, thereby achieving injection molding.

[0003] For example, patent CN210851090U discloses an injection molding machine nozzle, which includes an adjacent connection between a mold and a heated injection barrel of an injection molding machine. The nozzle has a nozzle body processed by metal. The nozzle body is symmetrically arranged around a central axis. The nozzle body has a first end and a second end opposite thereto. The output hole is arranged at the first end, and the air inlet hole is arranged at the second end. The output hole and the air inlet hole are concentrically arranged and the centers are all on the central axis. The nozzle body has a curved contact surface, a tip part, a nut part and a threaded part. The curved contact surface extends radially, and the radius of curvature of the curved contact surface matches the radius of curvature used on the sprue bushing. The curved contact surface extends to a first transition line. The tip part of the nozzle body extends from the first transition line to the nut part. When the tip part extends away from the first transition line, the diameter of the tip part linearly decreases, minimizing the mass of the tip part and forming a low point on the outside of the nozzle body.

[0004] When using the above technology, it is found that the following technical problems exist in the prior art: during injection molding, the hot molten material is likely to cool and solidify when entering the cold spray cavity, so that the injection molding nozzle will be blocked after long-term operation; secondly, when cleaning the nozzle, it is difficult to clean the molten material adhering to the inner wall of the spray cavity. Therefore, we design an injection head convenient for maintenance to provide another technical solution for the above technical problems. Summary of the Utility Model

[0005] Based on this, in view of the above technical problems, it is necessary to provide an injection head convenient for maintenance. The threaded connection pipe is threadedly connected to the injection molding machine by turning the nut with a wrench. The injection molding machine transports the molten material into the mold through the material guiding cavity and the nozzle. When the hot molten material enters the cold material guiding cavity, it is easy to solidify on the inner wall of the material guiding cavity, causing blockage of the inner wall of the material guiding cavity. At this time, the heating mechanism is used to dissolve the solidified molten material, so as to facilitate recycling.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An injection head convenient for maintenance, comprising a material guiding cavity, one end outside the material guiding cavity is fixed with a nut, one end of the material guiding cavity passes through the nut and is fixed with a threaded connecting pipe, the other end of the material guiding cavity is slidably connected with a nozzle, a plurality of sliding grooves are evenly arranged at one end inside the nozzle, limiting grooves are arranged at both ends inside the material guiding cavity, and a heating mechanism is arranged outside the material guiding cavity.

[0008] As a preferred embodiment of the injection head convenient for maintenance provided by the present utility model, the heating mechanism includes a heating block, the heating blocks are slidably connected to the top and bottom of the outside of the material guiding cavity, a semi-cylindrical shell is slidably connected to the outside of the heating block, a power supply connecting head is fixed to the outside of the heating block, the top of the power supply connecting head is slidably connected to the semi-cylindrical shell, both ends inside the semi-cylindrical shell are slidably connected to the material guiding cavity, limiting rods are fixed to both ends inside the semi-cylindrical shell, and the bottom ends of the limiting rods are slidably connected to the limiting grooves.

[0009] As a preferred embodiment of the injection head convenient for maintenance provided by the present utility model, second limiting blocks are fixed to both ends on both sides of one of the semi-cylindrical shells, first limiting blocks are fixed to both ends on both sides of the other semi-cylindrical shell, and a clamping assembly is arranged inside the first limiting block.

[0010] As a preferred embodiment of the injection head convenient for maintenance provided by the present utility model, the clamping assembly includes a limiting rotating rod, the limiting rotating rod is rotatably connected inside the first limiting block, a threaded rod is threadedly connected inside the limiting rotating rod, the top end of the threaded rod passes through the second limiting block and is rotatably connected to a limiting pressure-applying rotating buckle, and a gasket is slidably connected to the outside of the threaded rod and at the top of the second limiting block.

[0011] As a preferred embodiment of the injection head convenient for maintenance provided by the present utility model, a semi-cylindrical mounting block is fixed to one end of the semi-cylindrical shell, and a disassembly mechanism is arranged inside the semi-cylindrical mounting block.

[0012] As a preferred embodiment of the injection head convenient for maintenance provided by the present utility model, the disassembly mechanism includes a manual pull rod, the manual pull rod is slidably connected inside the semi-cylindrical mounting block, the bottom end of the manual pull rod is slidably connected to the sliding groove, a spring is sleeved on the outside of the manual pull rod, the bottom end of the spring is fixed to the semi-cylindrical mounting block, and the top end of the spring is fixed to the manual pull rod.

[0013] It can be undoubtedly seen that through the above technical solutions of the present application, the technical problems to be solved by the present application can surely be solved.

[0014] Meanwhile, through the above technical solutions, the present utility model at least has the following beneficial effects:

[0015] The utility model provides an injection head convenient for maintenance. The heating mechanism heats the cooling and solidifying material in the material guiding cavity, so that the new molten material conveyed by the injection molding machine impacts the dissolved molten material into the mold, avoiding blockage inside the nozzle.

[0016] The clamping mechanism facilitates the limiting and fixing of the heating block. When the heating block needs to be repaired, the two semi-cylindrical shells are disassembled and repaired through the clamping mechanism, thus improving the convenience of the device.

[0017] The disassembly mechanism limits or disassembles the nozzle. When the nozzle is blocked, the manual pull rod is pulled to disengage from the inside of the nozzle for cleaning. After cleaning, the manual pull rod and the sliding groove are slidably limited by the elasticity of the spring, thereby limiting the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for description in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 It is a schematic diagram of the positional structure of the semi-cylindrical shell and the heating block of the present utility model;

[0021] Figure 3 It is a schematic diagram of the clamping mechanism structure of the present utility model;

[0022] Figure 4 For the present utility model Figure 1 The enlarged schematic diagram at A in;

[0023] Figure 5 It is a schematic diagram of the connection structure between the second limiting block and the gasket of the present utility model;

[0024] Figure 6 For the present utility model Figure 3 The enlarged schematic diagram at B in.

[0025] In the figure: 1, threaded connecting pipe; 2, nut; 3, semi-cylindrical shell; 4, power supply connecting head; 5, manual pull rod; 6, nozzle; 7, semi-cylindrical mounting block; 8, threaded rod; 9, first limiting block; 10, second limiting block; 11, material guiding cavity; 12, heating block; 13, sliding groove; 14, limiting rotating rod; 15, gasket; 16, limiting rod; 17, limiting groove; 18, spring; 19, limiting pressure rotating buckle. Detailed implementation manners

[0026] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0027] In order to enable those skilled in the art of this technology to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

[0028] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments can be combined with each other.

[0029] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] Embodiment 1

[0031] Referring to Figures 1 - 5 , an injection head facilitating maintenance includes a material guiding cavity 11. One end outside the material guiding cavity 11 is fixedly provided with a nut 2. One end of the material guiding cavity 11 passes through the nut 2 and is fixedly provided with a threaded connection pipe 1. The threaded connection pipe 1 is threadedly connected to an injection molding machine by rotating the nut 2 with a wrench. The other end of the material guiding cavity 11 is slidably connected with a nozzle 6. Plasticity is performed by inserting the end of the nozzle 6 far from the material guiding cavity 11 into a mold. A plurality of chutes 13 are evenly arranged at one end inside the nozzle 6. The chutes 13 are used to limit the nozzle 6 to prevent the nozzle 6 from rotating. Limit grooves 17 are provided at both ends inside the material guiding cavity 11, and the limit grooves 17 are also used for limiting. A heating mechanism is arranged outside the material guiding cavity 11;

[0032] The heating mechanism includes a heating block 12. The heating block 12 is slidably connected to the outer top and bottom of the material guiding cavity 11. The heating block 12 keeps the molten material inside the material guiding cavity 11 in a liquid state to flow into the mold. A semi-cylindrical shell 3 is slidably connected to the outer side of the heating block 12. The semi-cylindrical shell 3 is used to limit the heating block 12 to prevent the heating block 12 from failing to fit with the material guiding cavity 11, resulting in poor heat conduction of the heating block 12. A power connection head 4 is fixed to the outer side of the heating block 12. The heating block 12 is electrically conducted by connecting it to the power supply through the power connection head 4. The top of the power connection head 4 is slidably connected to the semi-cylindrical shell 3. The two ends inside the semi-cylindrical shell 3 are slidably connected to the material guiding cavity 11. The heating block 12 is wrapped outside the material guiding cavity 11 by the semi-cylindrical shell 3. Limiting rods 16 are fixed to both ends inside the semi-cylindrical shell 3. The bottom end of the limiting rod 16 is slidably connected to the limiting groove 17. The semi-cylindrical shell 3 and the heating block 12 are limited by the limiting rod 16 to prevent the semi-cylindrical shell 3 and the heating block 12 from rotating;

[0033] Specifically, by fitting the inside of the heating block 12 with the material guiding cavity 11, the heating block 12 heats the inside of the material guiding cavity 11, dissolving the solidified molten material inside the material guiding cavity 11. And by the injection molding machine transporting new molten material, the dissolved molten material is impacted into the mold, preventing the molten material from solidifying and blocking inside the nozzle 6;

[0034] Second limiting blocks 10 are fixed to both ends on both sides of one of the semi-cylindrical shells 3, and first limiting blocks 9 are fixed to both ends on both sides of the other semi-cylindrical shell 3. A clamping assembly is arranged inside the first limiting block 9;

[0035] Specifically, the first limiting block 9 and the second limiting block 10 are clamped by the clamping assembly, and the first limiting block 9 and the second limiting block 10 drive the two semi-cylindrical shells 3 to limit the heating block 12;

[0036] The clamping assembly includes a limiting rotating rod 14. The limiting rotating rod 14 is rotatably connected inside the first limiting block 9. A threaded rod 8 is threadedly connected inside the limiting rotating rod 14. The top end of the threaded rod 8 passes through the second limiting block 10 and is rotatably connected to a limiting pressure-applying rotating buckle 19. A gasket 15 is slidably connected to the outer side of the threaded rod 8 and at the top of the second limiting block 10. The gasket 15 is used to clamp the second limiting block 10, facilitating the improvement of the clamping stability;

[0037] Specifically, by rotating the limiting pressure-applying rotating buckle 19, the limiting pressure-applying rotating buckle 19 drives the threaded rod 8 to rotate with the limiting rotating rod 14;

[0038] Thus, adjust according to the distance between the second limit block 10 and the first limit block 9. Finally, rotate the limit pressing turnbuckle 19 to squeeze the gasket 15, so that the two semi-cylindrical shells 3 are fixed, thereby limiting the heating block 12 inside the semi-cylindrical shell 3 to ensure that the heating block 12 is in contact with the material guiding cavity 11. When the heating block 12 needs to be disassembled, rotate the limit pressing turnbuckle 19 to release the extrusion of the gasket 15, and rotate the threaded rod 8 to extend, so that the gasket 15 slides away from the second limit block 10, thereby disassembling the two semi-cylindrical shells 3 and the heating block 12.

[0039] Embodiment 2

[0040] Refer to Figure 6 A syringe head convenient for maintenance, one end of the semi-cylindrical shell 3 is fixed with a semi-cylindrical mounting block 7, and a disassembly mechanism is arranged inside the semi-cylindrical mounting block 7. The disassembly mechanism includes a manual pull rod 5. The manual pull rod 5 is slidably connected inside the semi-cylindrical mounting block 7. The bottom end of the manual pull rod 5 is slidably connected with the chute 13. A spring 18 is sleeved outside the manual pull rod 5. The bottom end of the spring 18 is fixed to the semi-cylindrical mounting block 7, and the top end of the spring 18 is fixed to the manual pull rod 5;

[0041] Specifically, when the nozzle 6 is blocked, at this time, pull the manual pull rod 5 and disengage from the inside of the chute 13, so as to disassemble and clean the nozzle 6. Finally, after the cleaning is completed, slide through the inside of the nozzle 6 and the material guiding cavity 11, and release the manual pull rod 5. The elastic force of the spring 18 slides and limits the manual pull rod 5 and the chute 13, so as to limit the nozzle 6.

[0042] The use process of a syringe head convenient for maintenance provided by the present utility model is as follows: When in use, rotate the nut 2 with a wrench to threadedly connect the threaded connecting pipe 1 with the injection molding machine. The injection molding machine transports the molten material to the inside of the mold through the material guiding cavity 11 and the nozzle 6. When the hot molten material enters the cold material guiding cavity 11, it is easy to cause the molten material on the inner wall of the material guiding cavity 11 to solidify, thereby causing the inner wall of the material guiding cavity 11 to be blocked. The heating block 12 is used to keep the molten material in a liquid state, which is convenient for flowing into the mold through the material guiding cavity 11 for plastic shaping;

[0043] The heating block 12 is placed inside the semi-cylindrical housing 3, and the limiting rod 16 is aligned with the limiting groove 17 for limiting. At this time, the limiting pressure rotating buckle 19 is rotated, so that the limiting pressure rotating buckle 19 drives the threaded rod 8 and the limiting rotating rod 14 to rotate, and thus the adjustment is made according to the distance between the second limiting block 10 and the first limiting block 9. When the limiting pressure rotating buckle 19 drives the threaded rod 8 and the gasket 15 to slide with the second limiting block 10, at this time, the limiting pressure rotating buckle 19 is rotated to squeeze the gasket 15 and the second limiting block 10, so as to fix the semi-cylindrical housing 3, and the semi-cylindrical housing 3 wraps the heating block 12, so that the heating block 12 is in close contact with the material guiding cavity 11 for heating, so that the solidified molten material in the material guiding cavity 11 is dissolved. The new molten material is conveyed by the injection molding machine to impact the dissolved molten material into the mold, avoiding blockage inside the nozzle 6;

[0044] When the nozzle 6 is blocked, at this time, the manual pull rod 5 is pulled to disengage from the inside of the sliding groove 13, so as to disassemble and clean the nozzle 6. Finally, after the cleaning is completed, the inside of the nozzle 6 slides with the material guiding cavity 11, and the manual pull rod 5 is released. The elastic force of the spring 18 is used to slide and limit the manual pull rod 5 with the sliding groove 13, so as to limit the nozzle 6.

[0045] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific embodiments. Obviously, according to the content of this specification, many modifications and changes can be made. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art in the technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An injection head that is convenient for maintenance, characterized in that It includes a material guiding cavity (11). One end outside the material guiding cavity (11) is fixed with a nut (2). One end of the material guiding cavity (11) passes through the nut (2) and is fixed with a threaded connecting pipe (1). The other end of the material guiding cavity (11) is slidably connected with a nozzle (6). A plurality of chutes (13) are evenly arranged at one end inside the nozzle (6). Limiting grooves (17) are arranged at both ends inside the material guiding cavity (11). A heating mechanism is arranged outside the material guiding cavity (11).

2. The syringe head convenient for maintenance according to claim 1, characterized in that, The heating mechanism includes heating blocks (12). Heating blocks (12) are slidably connected to both the top end and the bottom end outside the material guiding cavity (11). A semi-cylindrical shell (3) is slidably connected to the outside of the heating block (12). A power connection head (4) is fixed to the outside of the heating block (12). The top end of the power connection head (4) is slidably connected to the semi-cylindrical shell (3). Both ends inside the semi-cylindrical shell (3) are slidably connected to the material guiding cavity (11). Limiting rods (16) are fixed to both ends inside the semi-cylindrical shell (3). The bottom end of the limiting rod (16) is slidably connected to the limiting groove (17).

3. The injection head convenient for maintenance according to claim 2, wherein, Second limiting blocks (10) are fixed to both ends on both sides of one of the semi-cylindrical shells (3). First limiting blocks (9) are fixed to both ends on both sides of the other semi-cylindrical shell (3). A clamping assembly is arranged inside the first limiting block (9).

4. The injection head convenient for maintenance according to claim 3, characterized in that, The clamping assembly includes a limiting rotating rod (14). A limiting rotating rod (14) is rotatably connected inside the first limiting block (9). A threaded rod (8) is threadedly connected inside the limiting rotating rod (14). The top end of the threaded rod (8) passes through the second limiting block (10) and is rotatably connected with a limiting pressure turning buckle (19). A gasket (15) is slidably connected to the outside of the threaded rod (8) and at the top of the second limiting block (10).

5. The injection head according to claim 2, which is easy to repair, is characterized in that, One end of the semi-cylindrical shell (3) is fixed with a semi-cylindrical mounting block (7). A disassembly mechanism is arranged inside the semi-cylindrical mounting block (7).

6. The injection head according to claim 5, which is convenient for maintenance, is characterized in that The disassembly mechanism includes a manual pull rod (5). A manual pull rod (5) is slidably connected inside the semi-cylindrical mounting block (7). The bottom end of the manual pull rod (5) is slidably connected to the chute (13). A spring (18) is sleeved on the outside of the manual pull rod (5). The bottom end of the spring (18) is fixed to the semi-cylindrical mounting block (7). The top end of the spring (18) is fixed to the manual pull rod (5).

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