Self-discharging device for injection molding of tool box

Abstract

The utility model relates to the technical field of discharging devices, in particular to a self-discharging device for injection molding of a tool box, which comprises an upper die holder, a lower die holder and a connecting pipe, and a feeding pipe is arranged on the inner side of the upper die holder; the sealing device further comprises a control assembly, the guide rod can be relatively limited through the movable groove, so that the guide rod is forced to stir the rotating disc to rotate, the stirring groove formed in the top face of the rotating disc can stir the first stirring rod, and the first stirring rod can drive the sealing block to move together when sliding; a shifting rod II at the top end of the sealing block does not slide when sliding to the tail end of a limiting groove, and the shifting groove continuously shifts to enable the shifting rod II to be subjected to collision force to force the sealing block to rotate to a certain degree, so that the six groups of sealing blocks arranged in a circumferential array are unfolded; therefore, molten plastic can enter a cavity formed after the upper mold base and the lower mold base are assembled through the injection molding head and the feeding pipe, injection molding work is completed, automatic discharging can be achieved during connection, and convenience and rapidness are achieved.

Description

Technical Field

[0001] This utility model relates to the field of material discharge device technology, specifically to a self-discharging device for injection molding of a toolbox. Background Technology

[0002] Toolboxes are manufactured using injection molding, which involves heating and melting plastic granules, injecting them into a mold cavity, and then demolding them after cooling and solidification to obtain the finished product. Commonly used materials include engineering plastics such as ABS, PP, and PC, which possess properties such as wear resistance, impact resistance, and chemical corrosion resistance. The production process encompasses mold design, injection molding machine parameter setting, pressure holding and cooling, automatic demolding, and post-processing. Key control points include mold precision, molding cycle optimization, and quality control. This process is suitable for mass production, ensuring the structural strength and appearance consistency of the toolboxes, and can be integrated with automated parts handling, stacking, or assembly processes to reduce costs.

[0003] Toolbox production requires molds and injection molding equipment. The discharge end of the injection molding equipment is the discharge device that injects molten plastic into the mold. However, the existing discharge device is directly connected to the mold. If the injection of plastic is not stopped when the discharge end of the injection is disconnected, the molten plastic inside will leak. Furthermore, the existing discharge end cannot achieve the function of opening when connected and closing when disconnected, which makes it inconvenient to connect during injection molding in toolbox production.

[0004] In view of this, we propose a self-discharging device for injection molding of a toolbox. Utility Model Content

[0005] The purpose of this utility model is to provide a self-discharging device for injection molding of toolboxes, which solves the problem that the injection end of the toolbox cannot automatically open and close during the connection process.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An injection molding self-ejecting device for a toolbox includes an upper mold base, a lower mold base, and a connecting pipe. An inlet pipe is provided inside the upper mold base. The device also includes a control component for automatically opening and closing the connecting pipe during injection molding. The control component includes an internal threaded sleeve, the top surface of which is fixedly connected to the bottom surface of the connecting pipe. An external threaded post is threadedly connected to the inner side of the internal threaded sleeve. A fixing pipe is fixedly connected to the bottom surface of the external threaded post. A sliding sleeve is slidably connected to the bottom end of the fixing pipe. A support rod is fixedly connected to the bottom surface of the external threaded post. The bottom end of the support rod is inserted into the inner side of the sliding sleeve and slidably connected to it. A control panel is fixedly connected to the bottom surface of the fixing pipe. A bracket is fixedly connected to the inner side of the control panel, and a limit groove is formed on the surface of the bracket.

[0008] Preferably, the control panel has a movable groove on its side, a turntable is rotatably connected to the inner side of the control panel, and a guide rod is fixedly connected to the side of the turntable, with the guide rod passing through the movable groove.

[0009] Preferably, a spring is sleeved on the outer side of the support rod, one end of the spring is fixedly connected to the bottom surface of the external threaded column, and the other end of the spring is fixedly connected to the top surface of the sliding sleeve.

[0010] Preferably, the top surface of the turntable is provided with a hexagonal groove, and a lever is inserted into the inner side of the groove.

[0011] Preferably, a sealing block is fixedly connected to the top surface of the first lever, and a second lever is fixedly connected to the top surface of the sealing block, with the top end of the second lever inserted into the inner side of the limiting groove.

[0012] Preferably, the inner side of the sliding sleeve is provided with a guide groove, and there are two sets of guide grooves. The two sets of guide grooves are respectively opened on the inner side of the sliding sleeve, and the guide rod passes through the movable groove and is inserted into the inner side of the guide groove.

[0013] Preferably, an injection head is fixedly connected to the bottom surface of the control panel, and the diameter of the bottom end of the injection head is smaller than the inner diameter of the feed pipe.

[0014] By employing the above technical solution, this utility model provides a self-discharging device for injection molding of a toolbox. It possesses at least the following beneficial effects:

[0015] 1. This utility model uses a movable groove to limit the guide rod, thereby forcing the guide rod to rotate the turntable. The actuation groove on the top surface of the turntable actuates the first lever, causing the sealing block to move along with it as the lever slides. The second lever at the top of the sealing block will not slide when it reaches the end of the limiting groove. The continuous actuation of the groove will cause the second lever to be subjected to a resistance force, forcing the sealing block to rotate to a certain extent. This will unfold the six sets of circumferentially arrayed sealing blocks, allowing the molten plastic to enter the cavity after the upper and lower mold bases are closed through the injection head and the feed pipe, thus completing the injection molding process. This means that the material can be automatically discharged upon connection, which is convenient and fast.

[0016] 2. By pulling up the fixed tube, the compressed spring will push the sliding sleeve back, causing the sliding sleeve to move downward. In the same way, the guide rod will also rotate the turntable in the opposite direction along the guide groove, thereby driving the six sets of circumferentially arrayed sealing blocks to close, thus realizing the closure of the entire self-discharging device. This will not cause excessive material leakage, save materials, and make operation convenient. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is an enlarged cross-sectional view of the upper mold base in this utility model;

[0020] Figure 3 This is a partially enlarged structural diagram of the present invention;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the fixed tube in this utility model;

[0022] Figure 5 This is a schematic diagram of the unfolded structure of the control panel in this utility model;

[0023] Figure 6 This is a schematic diagram of the inner structure of the sliding sleeve in this utility model.

[0024] In the diagram: 1. Upper mold base; 2. Control component; 21. Internal threaded sleeve; 22. External threaded post; 23. Fixed tube; 24. Sliding sleeve; 25. Support rod; 26. Spring; 27. Control panel; 28. Bracket; 29. ​​Limiting groove; 210. Movable groove; 211. Turntable; 212. Actuating groove; 213. Guide rod; 214. Actuating rod one; 215. Sealing block; 216. Actuating rod two; 217. Guide groove; 218. Injection head; 3. Lower mold base; 4. Feed pipe; 5. Connecting pipe. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] A toolbox injection molding self-discharging device, such as Figure 1 - Figure 6As shown, the system includes an upper mold base 1, a lower mold base 3, and a connecting pipe 5. The upper mold base 1 has an inner feed pipe 4. It also includes a control component 2, which is used to automatically open and close the connecting pipe 5 during injection molding. The control component 2 includes an internal threaded sleeve 21, the top surface of which is fixedly connected to the bottom surface of the connecting pipe 5. An external threaded post 22 is threadedly connected to the inner side of the internal threaded sleeve 21. A fixing pipe 23 is fixedly connected to the bottom surface of the external threaded post 22. A sliding sleeve 24 is slidably connected to the bottom end of the fixing pipe 23. A support rod 25 is fixedly connected to the bottom surface of the external threaded post 22. The bottom end of the support rod 25 is inserted into the inner side of the sliding sleeve 24 and slidably connected to the sliding sleeve 24. A control panel 27 is fixedly connected to the bottom surface of the fixing pipe 23. A bracket 28 is fixedly connected to the inner side of the control panel 27. A limit groove 29 is formed on the surface of the bracket 28. A movable groove 210 is provided on the side of the control panel 27. A turntable 211 is rotatably connected to the inner side of the control panel 27. A guide rod 213 is fixedly connected to the side of the turntable 211 and passes through the movable groove 210. A spring 26 is sleeved on the outer side of the support rod 25. One end of the spring 26 is fixedly connected to the bottom surface of the external threaded post 22, and the other end of the spring 26 is fixedly connected to the top surface of the sliding sleeve 24. When the fixed tube 23 and the injection head 218 are aligned with the feed tube 4 and pushed in, since the diameter of the injection head 218 is smaller than the inner diameter of the feed tube 4, the bottom of the sliding sleeve 24 will be blocked by the feed tube 4 when the injection head 218 is inserted into the feed tube 4. As the fixed tube 23 is pushed in, the sliding sleeve 24 will be forced to slide upward along the outer side of the fixed tube 23, and the sliding sleeve 24 will compress the spring 26. The top surface of the turntable 211 has a hexagonal groove 212, and a lever 214 is inserted into the inner side of the groove. A sealing block 215 is fixedly connected to the top surface of the lever 214. When the sliding sleeve 24 moves upward, the guide groove 217 on its inner side will abut against the guide rod 213 located in the movable groove 210. The movable groove 210 will limit the guide rod 213, thereby forcing the guide rod 213 to rotate the turntable 211. The groove 212 on the top surface of the turntable 211 will actuate the lever 214, so that when the lever 214 slides, it will drive the sealing block 215 to move together. A lever 216 is fixedly connected to the top surface of the sealing block 215, and the top of the lever 216 is inserted into the inner side of the limiting groove 29. The inner side of the sliding sleeve 24 is provided with a guide groove 217. There are two sets of guide grooves 217, and the two sets of guide grooves 217 are respectively opened on the inner side of the sliding sleeve 24. The guide rod 213 passes through the movable groove 210 and is inserted into the inner side of the guide groove 217.The bottom surface of the control panel 27 is fixedly connected to the injection head 218. When the lever 214 slides, it will drive the sealing block 215 to move together. When the lever 216 at the top of the sealing block 215 slides to the end of the limiting groove 29, it will not slide. When the toggle groove 212 is continuously toggled, the lever 216 will be subjected to a resistance force, which will force the sealing block 215 to rotate to a certain extent, thereby unfolding the six sets of circumferentially arrayed sealing blocks 215. Then the molten plastic can enter the cavity after the upper mold base 1 and the lower mold base 3 are closed through the injection head 218 and the feed pipe 4. The diameter of the bottom end of the injection head 218 is smaller than the inner diameter of the feed pipe 4.

[0027] In the use of the self-discharging device for injection molding of a toolbox according to this utility model, when injection begins, molten plastic enters the connecting pipe 5 through the feed pipe 4. At this time, the control component 2 is in a closed state to prevent leakage. The core function of the control component 2 is to achieve automatic opening and closing through threaded transmission and spring 26 reset: the inner threaded sleeve 21 is fixed to the connecting pipe 5, and the outer threaded post 22 is screwed into the inner threaded sleeve 21. When the fixed pipe 23 and the injection head 218 are aligned with the feed pipe 4 and pushed in, because the diameter of the injection head 218 is smaller than the inner diameter of the feed pipe 4, the bottom of the sliding sleeve 24 is blocked by the feed pipe 4 when the injection head 218 is inserted into the feed pipe 4. As the fixed pipe 23 is pushed in, it forces the sliding sleeve 24 to slide upward along the outside of the fixed pipe 23, and the sliding sleeve 24 will compress the spring 26. As the sliding sleeve 24 moves upward, its inner guide groove 217 will abut against the guide rod 213 located in the movable groove 210. The movable groove 210 will relatively move against the guide rod. 213 is limited, thereby forcing the guide rod 213 to rotate the turntable 211. The actuation groove 212 on the top surface of the turntable 211 will actuate the lever 214. When the lever 214 slides, it will drive the sealing block 215 to move together. When the lever 216 at the top of the sealing block 215 slides to the end of the limiting groove 29, it will not slide. The continuous actuation of the actuation groove 212 will cause the lever 216 to be subjected to the resistance force, forcing the sealing block 215 to rotate to a certain extent. This will cause the six sets of circumferentially arrayed sealing blocks 215 to unfold. Then the molten plastic can enter the cavity after the upper mold base 1 and the lower mold base 3 are closed through the injection head 218 and the feed pipe 4, thereby completing the injection molding work. That is, the material can be automatically discharged when connected, which is convenient and fast.

[0028] After injection molding is completed, the fixed tube 23 is pulled up, and the compressed spring 26 pushes back the sliding sleeve 24, causing the sliding sleeve 24 to move downward. In the same way, the guide rod 213 will also move the turntable 211 to rotate in the opposite direction along the guide groove 217, thereby driving the six sets of circumferentially arrayed sealing blocks 215 to close, so as to realize the closure of the entire self-discharging device, which will not cause excessive material leakage, save materials, and is easy to operate.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A toolbox injection molding self-ejection device, comprising an upper mold base (1), a lower mold base (3), and a connecting pipe (5), characterized in that: The upper mold base (1) is provided with a feed pipe (4) on its inner side. It also includes a control component (2) for the connection tube (5) to automatically open and close during injection molding; The control component (2) includes an internal threaded sleeve (21), the top surface of which is fixedly connected to the bottom surface of the connecting pipe (5), an external threaded post (22) is threadedly connected to the inner side of the internal threaded sleeve (21), a fixed pipe (23) is fixedly connected to the bottom surface of the external threaded post (22), a sliding sleeve (24) is slidably connected to the bottom end of the fixed pipe (23), a support rod (25) is fixedly connected to the bottom surface of the external threaded post (22), the bottom end of the support rod (25) is inserted into the inner side of the sliding sleeve (24) and slidably connected to the sliding sleeve (24), a control panel (27) is fixedly connected to the bottom surface of the fixed pipe (23), a bracket (28) is fixedly connected to the inner side of the control panel (27), and a limit groove (29) is opened on the surface of the bracket (28).

2. The self-discharging device for injection molding of a toolbox according to claim 1, characterized in that: The control panel (27) has a movable groove (210) on its side. A turntable (211) is rotatably connected to the inner side of the control panel (27). A guide rod (213) is fixedly connected to the side of the turntable (211). The guide rod (213) passes through the movable groove (210).

3. The self-discharging device for injection molding of a toolbox according to claim 1, characterized in that: A spring (26) is fitted on the outside of the support rod (25). One end of the spring (26) is fixedly connected to the bottom surface of the external threaded column (22), and the other end of the spring (26) is fixedly connected to the top surface of the sliding sleeve (24).

4. The self-discharging device for injection molding of a toolbox according to claim 2, characterized in that: The top surface of the turntable (211) is provided with a toggle groove (212), which is hexagonal in shape, and a lever (214) is inserted into the inner side of the toggle groove (212).

5. The self-discharging device for injection molding of a toolbox according to claim 4, characterized in that: A sealing block (215) is fixedly connected to the top surface of the first lever (214), and a second lever (216) is fixedly connected to the top surface of the sealing block (215). The top end of the second lever (216) is inserted into the inner side of the limiting groove (29).

6. The self-discharging device for injection molding of a toolbox according to claim 2, characterized in that: The inner side of the sliding sleeve (24) is provided with a guide groove (217). There are two sets of guide grooves (217), and the two sets of guide grooves (217) are respectively opened on the inner side of the sliding sleeve (24). The guide rod (213) passes through the movable groove (210) and is inserted into the inner side of the guide groove (217).

7. The self-discharging device for injection molding of a toolbox according to claim 1, characterized in that: The bottom surface of the control panel (27) is fixedly connected to an injection head (218), and the diameter of the bottom end of the injection head (218) is smaller than the inner diameter of the feed pipe (4).

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