Lipstick tube injection mold with mold temperature closed-loop control

Abstract

The invention discloses a lipstick tube injection mold with mold temperature closed-loop control, and relates to the field of plastic injection molds. A preset mold setting part and a preset movable mold part are in butt joint through a hydraulic driving part, and a fixed support is arranged at the lower end of the preset mold setting part; and the preset movable mold component transversely moves along the upper end of the fixed support through the hydraulic driving component to conduct mold opening and closing work, a reserved mold rod is arranged on the outer side of the preset movable mold component, and a movable demolding component is arranged in the preset movable mold component in a nested mode. According to the lipstick tube injection mold with the mold temperature closed-loop control function, the auxiliary secondary positioning mechanism is arranged, secondary anti-falling ejection work is conducted on a forming object making contact with the auxiliary secondary positioning mechanism through the auxiliary secondary positioning mechanism, formed finished product taking operation does not need to be conducted in a traditional secondary driving mode, the working effect of secondary ejection discharging can be achieved through the single driving step, and the working efficiency is improved. The technical defect that finished products are bonded is overcome, and the machining stability and efficiency of the device are improved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic injection molds, in particular to a lipstick tube injection mold with mold temperature closed-loop control. Background Art

[0002] As one of the main components of lipstick products, the lipstick tube requires an injection mold to be used for molding during the injection molding process of the lipstick tube shell. Traditional lipstick tube injection molds are prepared by injection rapid molding between the movable die set and the fixed die set. For example, the patent with publication number CN120170983A discloses an injection mold for processing lipstick tubes, which includes a main frame, a mold fixing frame fixedly mounted on one end of the top of the main frame, a fixed mold assembly fixedly mounted on one side of the mold fixing frame, and a heat exhaust assembly fixedly mounted on the other side of the mold fixing frame. A circulating cooling assembly is connected between the heat exhaust assembly and the fixed mold assembly. The circulating cooling assembly makes the product size more stable during the injection molding process, avoiding the generation of bubbles and making it difficult to demold; the heat of the mold is continuously and efficiently removed by the heat exhaust assembly, thereby ensuring the stability of product quality and production efficiency; the conveying assembly allows the lipstick tubes that have been demolded to be neatly loaded and then proceed to the next process, without the need for manual collection and arrangement of the products one by one, thereby improving work efficiency; Another example is a lipstick-based injection mold disclosed in the patent with publication number CN213405200U. The bottom of the module is fixed to the top of the base plate, a mold cavity is provided on the top of the module, a fitting block is placed on the top of the module, an auxiliary cavity is provided between the top and bottom of the fitting block, and connecting blocks are fixedly connected on both sides of the fitting block. The fitting blocks can drive two ropes to reel in and out, thereby indirectly driving the fitting block to move upward. By limiting the lipstick with the ejector rod, the lipstick can be moved out of the auxiliary cavity. At this time, the lipstick is removed from the mold, which not only facilitates the disassembly of the mold and reduces the amount of lipstick in the cavity, but also facilitates the demoulding of the solidified lipstick, effectively avoiding the breakage of the lipstick during demoulding. For example, the patent with publication number CN209965542U discloses a lipstick injection mold, which includes an upper mold fixing plate connected to an upper mold base at one end, an upper mold base connected to a lower mold base at one end, a pad iron connected to a lower mold fixing plate at one end, a garbage pin located between a buffer bottom plate and the lower mold fixing plate, one end of the buffer bottom plate connected to an ejector bottom plate, and one end of the ejector bottom plate connected to a spring. This allows lipstick solution to flow into the mold and form the mold quickly through cooling, thereby improving the working efficiency of the device. Furthermore, the device has a simple structure, reasonable design, and is easy to use. Most of the above-mentioned existing technologies have improved their overall structure, but during the processing of the existing lipstick tube injection mold, most of them require a secondary drive method to perform the material removal operation of the finished plastic product after molding. There are redundant links in the driving steps, and during the driving and unloading process, due to the problem of molding temperature, there is a certain state of adhesion of the molding material, which makes it difficult to unload quickly, and requires subsequent multiple material removal processes, which has certain usage limitations. Summary of the Invention

[0003] The purpose of the present invention is to provide a lipstick tube injection mold with mold temperature closed-loop control to solve the problem proposed in the above background technology that a secondary drive is required to carry out the material removal operation of the finished plastic product after molding, and there are redundant links in the driving steps. In addition, during the driving and unloading process, due to the problem of molding temperature, there is a certain state of adhesion of the molding material, which makes it difficult to unload quickly, and requires subsequent multiple material removal processes.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a lipstick tube injection mold with mold temperature closed-loop control, comprising a preset movable mold component and a preset mold component, the preset mold component and the preset movable mold component are docked with each other by a hydraulic drive component, a fixed support is provided at the lower end of the preset mold component, and the preset movable mold component is laterally movable along the upper end of the fixed support by the hydraulic drive component to perform mold opening and closing operations, a reserved mold rod is provided on the outer side of the preset movable mold component; a movable demolding component is nested inside the preset movable mold component, and the preset movable mold component and the reserved mold rod are molded and injection molded along the inner side of the preset mold component, and the movable demolding component is movable along the inner side of the preset movable mold component for demolding, an adaptive temperature control adjustment mechanism is provided between the preset movable mold component and the movable demolding component, and the traditional secondary drive method is not required to perform the finished product removal operation after molding, and a single drive step can achieve the working effect of secondary ejection and unloading, thereby avoiding the technical defect of finished product adhesion.

[0005] Furthermore, the adaptive temperature control adjustment mechanism is provided with a mold temperature control component, and the mold temperature control component is installed on the inner side of the preset movable mold component. The mold temperature control component performs constant temperature closed-loop control on the temperature inside the preset movable mold component through the coolant supply state in the preset pipeline inside the equipment. The inner side of the movable demolding component is docked with a built-in docking part, and the built-in docking part is arranged on the inner side of the preset movable mold component, and the middle end of the built-in docking part corresponds to the outer protruding part of the fixed support, and a first return spring is fixedly connected between the built-in docking part and the inner side of the preset movable mold component.

[0006] Furthermore, a reserved supply channel is opened on the inner side of the preset movable mold component, and a fixed reserved piston component is fixedly connected to the outer side of the built-in docking component, and the positions of the fixed reserved piston component and the reserved supply channel correspond to each other.

[0007] Furthermore, the preset movable mold component and the movable demolding component are moved laterally along the upper end of the fixed support by the hydraulic drive component, and when the preset movable mold component moves to contact the outer protruding component of the fixed support, the built-in docking parts inside the preset movable mold component are synchronously subjected to force, driving the movable demolding component to move outward along the outer side of the reserved mold rod.

[0008] Furthermore, the built-in docking part drives the fixed reserved piston part to move laterally along the inner side of the preset movable mold part synchronously, and the fixed reserved piston part performs negative pressure fitting movement along the inner side of the reserved supply channel.

[0009] Furthermore, an auxiliary secondary positioning mechanism is provided inside the movable demolding component, and the auxiliary secondary positioning mechanism is used to perform secondary anti-ejection and ejection work on the molded object in contact; the auxiliary secondary positioning mechanism is provided with a built-in ejection docking piece, and the built-in ejection docking piece is nested and docked inside the reserved mold rod, and the outer side of the reserved mold rod is fixedly connected to an external guide piece, and the outer side of the external guide piece corresponds to the position of the inner protruding part of the movable demolding component.

[0010] Furthermore, a reserved through hole is opened on the inner side of the built-in ejection docking piece, and a second return spring is fixedly connected to the outer side of the built-in ejection docking piece, and the second return spring and the inner side of the reserved mold rod are docked with each other.

[0011] Furthermore, when the movable demoulding component is forced to move outward, the external guide member in contact pushes the docking built-in ejection docking component to move laterally along the inner side of the reserved mold rod until the built-in ejection docking component moves to the outer end of the reserved mold rod.

[0012] Furthermore, the built-in ejection docking piece forms an elastic support structure along the inner side of the reserved mold rod through the second return spring, and after the built-in ejection docking piece moves to the outside of the reserved mold rod, the reserved through hole outside the built-in ejection docking piece is in an open and non-closed state.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The lipstick tube injection mold with mold temperature closed-loop control is provided with an auxiliary secondary positioning mechanism, which performs secondary anti-slip ejection work on the contacted molded object through the auxiliary secondary positioning mechanism. The molded plastic molded part will move outward along with the drive of the reserved mold rod, and when the preset movable mold part moves to contact the outer protruding part of the fixed support, the built-in docking part inside it will be synchronously stressed, driving the movable demoulding part to move outward along the outer side of the reserved mold rod, thereby realizing the working state of preliminary material discharge. At the same time, the outward-moving movable demoulding part will push the built-in ejection docking part to move laterally along the inner side of the reserved mold rod through the contacted external guide part until the built-in ejection docking part moves to the outer side of the reserved mold rod, and the secondary ejection processing is realized by the built-in ejection docking part in the protruding state. There is no need for the traditional secondary drive method to perform the finished product removal operation after molding. Its single drive step can achieve the working effect of secondary ejection and unloading, avoiding the technical defect of finished product adhesion, and improving the processing stability and efficiency of the device. Furthermore, when the built-in ejector docking piece is pressed and moved outward, it will move along the inner side of the reserved mold rod to the outer side of the reserved mold rod through the second return spring. At this time, the reserved through hole on the outer side of the built-in ejector docking piece will be in a connected non-closed state, and the hot air accumulated inside the preset movable mold component can be discharged and recovered in a closed-loop process through the built-in ejector docking piece, thereby improving the multiple use effect of the entire preset movable mold component during the blanking process; Furthermore, an adaptive temperature control adjustment mechanism is provided, and the fixed reserved piston part docked on the outside of the built-in docking part will be forced to move laterally along the inner side of the preset movable mold part until the fixed reserved piston part performs negative pressure fitting through the inner side of the reserved supply channel, so that it can adaptively discharge the hot air accumulated in the equipment through the reserved through-hole on the outside of the built-in ejection docking part in a protruding state. While discharging the hot air accumulated in the preset movable mold part, the non-cold air flow is adaptively passed through the built-in ejection docking part to assist in applying pressure to the inside of the carried molding material, thereby improving its unloading state and performing closed-loop recovery and discharge processing on the hot air accumulated in the equipment, and effectively avoiding the situation where the molding material is difficult to unload quickly due to the problem of molding temperature. The single-drive structure achieves the technical effect of secondary unloading, and there is no need for subsequent secondary material collection processing steps, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the movable mold component of the present invention; Figure 3 This is a schematic diagram of the partial three-dimensional structure of the preset movable mold component of the present invention; Figure 4 This is a schematic diagram of the partial three-dimensional structure of the movable demoulding component of the present invention; Figure 5 For the present invention Figure 4 Schematic diagram of the partially enlarged structure; Figure 6 A schematic diagram of a half-cut three-dimensional structure of a reserved mold rod of the present invention; Figure 7 This is a schematic diagram of a half-cut three-dimensional structure of a fixed reserved piston member of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the first return spring of the present invention; Figure 9 A schematic diagram of the three-dimensional structure of the supply channel reserved for the present invention; Figure 10 This is a schematic diagram of the three-dimensional structure of the reserved through hole of the present invention.

[0015] In the figure: 1. Preset movable mold component; 2. Preset mold component; 3. Fixed support; 4. Movable demoulding component; 5. First return spring; 6. Mold temperature control component; 7. Built-in docking part; 8. Reserved supply channel; 9. Fixed reserved piston part; 10. Reserved mold rod; 11. External guide part; 12. Built-in ejection docking part; 13. Reserved through hole; 14. Second return spring. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] Example 1: Please refer to Figure 1 and Figure 4-10 The present invention provides the following technical solution: a lipstick tube injection mold with mold temperature closed-loop control. To solve the technical problem that during the driving and unloading process, due to the problem of molding temperature, there is a state in which the molding material is bound to each other, which makes it difficult to unload quickly, and thus requires subsequent multiple material removal processes, the invention discloses that a preset mold part 2 and a preset movable mold part 1 are connected to each other by a hydraulic drive component. The lower end of the preset mold part 2 is provided with a fixed support 3, and the preset movable mold part 1 is laterally movable along the upper end of the fixed support 3 by the hydraulic drive component to perform mold opening and closing operations. A reserved mold rod 10 is provided on the outer side of the preset movable mold part 1; A movable demolding component 4 is nested inside the preset movable mold component 1, and the preset movable mold component 1 and the reserved mold rod 10 perform mold closing injection molding along the inner side of the preset mold component 2, and the movable demolding component 4 is demolded along the inner side of the preset movable mold component 1. An adaptive temperature control adjustment mechanism is provided between the preset movable mold component 1 and the movable demolding component 4. The adaptive temperature control adjustment mechanism is provided with a mold temperature control component 6. A mold temperature control component 6 is installed on the inner side of the preset movable mold component 1. The mold temperature control component 6 performs constant temperature closed-loop control on the temperature inside the preset movable mold component 1 through the coolant supply state in the preset pipeline inside the equipment. The inner side of the movable demolding component 4 is docked with a built-in docking part 7, and the built-in docking part 7 is arranged on the inner side of the preset movable mold component 1, and the middle end of the built-in docking part 7 and the outer protruding part of the fixed support 3 are aligned with each other. In response, a first return spring 5 is fixedly connected between the built-in docking part 7 and the inner side of the preset movable mold part 1, a reserved supply channel 8 is opened on the inner side of the preset movable mold part 1, and a fixed reserved piston part 9 is fixedly connected to the outer side of the built-in docking part 7, and the positions of the fixed reserved piston part 9 and the reserved supply channel 8 correspond to each other. The preset movable mold part 1 and the movable demolding part 4 are moved laterally along the upper end of the fixed support 3 through the hydraulic drive part, and when the preset movable mold part 1 moves to contact the outer protruding part of the fixed support 3, the built-in docking part 7 inside the preset movable mold part 1 is synchronously subjected to force, driving the movable demolding part 4 to move outward along the outer side of the reserved mold rod 10, and the built-in docking part 7 drives the fixed reserved piston part 9 to move laterally along the inner side of the preset movable mold part 1 synchronously, and the fixed reserved piston part 9 performs negative pressure fitting activity along the inner side of the reserved supply channel 8.

[0018] Before injection molding, the user can use laser engraving to locally heat the mold material inside the pre-set mold part 2 using the high energy density of the laser, causing physical or chemical changes, thereby forming the desired pattern or text on the mold surface. Depending on the mold material, different types of lasers and different laser parameters can be selected to achieve the best engraving effect, thereby controlling the injection molding inside the pre-set mold part 2 according to the processing requirements of different types of lipstick tubes. After the preset movable mold part 1 is closed along the outer side of the preset mold part 2 by the driving part, the injection molding process can be carried out. During the process of opening the mold of the preset movable mold part 1 along the outer side of the fixed support 3, the molded plastic molded part will move outward along with the drive of the reserved mold rod 10. When the preset movable mold part 1 moves to contact the outer protruding part of the fixed support 3, the built-in docking part 7 inside it will be synchronously stressed, driving the movable demoulding part 4 to move outward along the outer side of the reserved mold rod 10, thereby realizing the preliminary discharge working state. At the same time, the outward moving demoulding part 4 will push the built-in ejection docking part 12 to move laterally along the inner side of the reserved mold rod 10 through the contacted external guide part 11 until the built-in ejection docking part 12 moves to the outside of the reserved mold rod 10. There is no need for the traditional secondary drive method to perform the finished product material removal operation after molding, and its single drive step can achieve the working effect of secondary ejection and unloading.

[0019] Example 2: Please refer to Figure 3-10 On the basis of the first embodiment, in order to solve the technical problem that the traditional secondary drive method is used to remove the finished plastic product after molding, and the driving steps have redundant links, an auxiliary secondary positioning mechanism is also disclosed, and its specific structure is as follows: The movable demoulding component 4 is provided with an auxiliary secondary positioning mechanism inside, which performs a secondary anti-ejection and ejection operation on the contacted molded object through the auxiliary secondary positioning mechanism; The auxiliary secondary positioning mechanism is provided with a built-in ejection docking piece 12, and the built-in ejection docking piece 12 is nested and docked inside the reserved mold rod 10, and the outer side of the reserved mold rod 10 is fixedly connected with an external guide piece 11, and the outer side of the external guide piece 11 corresponds to the position of the inner protruding part of the movable demoulding part 4, and a reserved through hole 13 is opened on the inner side of the built-in ejection docking piece 12, and the outer side of the built-in ejection docking piece 12 is fixedly connected with a second return spring 14, and the second return spring 14 is fixedly connected to the reserved mold rod 10. The inner sides of the rods 10 are butted against each other. During the process of the movable demoulding part 4 being forced to move outward, the outer guide 11 in contact pushes the docked built-in ejection docking part 12 to move laterally along the inner side of the reserved mold rod 10 until the built-in ejection docking part 12 moves to the outer end of the reserved mold rod 10. The built-in ejection docking part 12 forms an elastic support structure along the inner side of the reserved mold rod 10 through the second return spring 14. After the built-in ejection docking part 12 moves to the outer side of the reserved mold rod 10, the outer side of the built-in ejection docking part 12 is The reserved through hole 13 on the side is in an open and non-closed state. When the built-in docking part 7 contacts the extrusion force of the protruding part of the fixed support 3 and moves outward, the fixed reserved piston part 9 docked on the outside will be subjected to force, and then move laterally along the inner side of the preset movable mold part 1 until the fixed reserved piston part 9 performs negative pressure fitting through the inner side of the reserved supply channel 8, so that it can adaptively discharge the hot air accumulated in the equipment through the reserved through hole 13 on the outside of the built-in ejection docking part 12 in the protruding state. While discharging the hot air accumulated in the preset movable mold part 1, the non-cold air flow adaptively applies auxiliary pressure to the inside of the carried molding material through the built-in ejection docking part 12, thereby improving its unloading state and performing closed-loop recovery and discharge processing on the hot air stored in the equipment, and effectively avoiding the situation where the molding material is difficult to unload quickly due to the molding temperature problem. The single-drive structure achieves the technical effect of secondary unloading without the need for subsequent secondary material collection processing steps.

[0020] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0021] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lipstick tube injection mold with mold temperature closed-loop control, comprising a preset movable mold part (1) and a preset mold part (2), wherein the preset mold part (2) and the preset movable mold part (1) are connected to each other via a hydraulic drive part, a fixed support (3) is provided at the lower end of the preset mold part (2), and the preset movable mold part (1) is moved laterally along the upper end of the fixed support (3) by the hydraulic drive part to perform mold opening and closing operations, and a reserved mold rod (10) is provided on the outer side of the preset movable mold part (1); Its characteristics are: The preset movable mold part (1) is nested with a movable demoulding part (4), and the preset movable mold part (1) and the reserved mold rod (10) are molded and injection molded along the inner side of the preset mold part (2), and the movable demoulding part (4) is demoulded along the inner side of the preset movable mold part (1), and an adaptive temperature control adjustment mechanism is provided between the preset movable mold part (1) and the movable demoulding part (4).

2. The lipstick tube injection mold with closed-loop mold temperature control according to claim 1, characterized in that: The adaptive temperature control mechanism is provided with a mold temperature control component (6), the mold temperature control component (6) is installed on the inner side of the preset movable mold component (1), and the mold temperature control component (6) performs a constant temperature closed-loop control process on the temperature inside the preset movable mold component (1) through the supply state of the coolant in the preset pipeline inside the equipment. The inner side of the movable demoulding component (4) is docked with a built-in docking piece (7), and the built-in docking piece (7) is arranged on the inner side of the preset movable mold component (1), and the middle end of the built-in docking piece (7) corresponds to the position of the outer protruding part of the fixed support (3), and a first return spring (5) is fixedly connected between the built-in docking piece (7) and the inner side of the preset movable mold component (1).

3. The lipstick tube injection mold with closed-loop mold temperature control according to claim 2, characterized in that: A reserved supply channel (8) is provided on the inner side of the preset movable mold component (1), and a fixed reserved piston component (9) is fixedly connected to the outer side of the built-in docking component (7), and the positions of the fixed reserved piston component (9) and the reserved supply channel (8) correspond to each other.

4. The lipstick tube injection mold with closed-loop mold temperature control according to claim 3, characterized in that: The preset movable mold part (1) and the movable demoulding part (4) are moved laterally along the upper end of the fixed support (3) by the hydraulic drive part, and when the preset movable mold part (1) moves to contact the outer protruding part of the fixed support (3), the built-in docking part (7) inside the preset movable mold part (1) is synchronously stressed, driving the movable demoulding part (4) to move outward along the outer side of the reserved mold rod (10).

5. The lipstick tube injection mold with closed-loop mold temperature control according to claim 4, characterized in that: The built-in docking member (7) drives the fixed reserved piston member (9) to move synchronously along the inner side of the preset movable mold member (1) laterally, and the fixed reserved piston member (9) performs negative pressure fitting along the inner side of the reserved supply channel (8).

6. The lipstick tube injection mold with closed-loop mold temperature control according to claim 3, characterized in that: The movable demoulding component (4) is provided with an auxiliary secondary positioning mechanism inside, and the auxiliary secondary positioning mechanism performs a secondary anti-ejection and ejection operation on the contacted molded object; The auxiliary secondary positioning mechanism is provided with a built-in ejection docking piece (12), and the built-in ejection docking piece (12) is nested and docked inside the reserved mold rod (10), and the outer side of the reserved mold rod (10) is fixedly connected to an external guide piece (11), and the outer side of the external guide piece (11) corresponds to the position of the inner protruding part of the movable demoulding part (4).

7. The lipstick tube injection mold with closed-loop mold temperature control according to claim 6, characterized in that: A reserved through hole (13) is provided on the inner side of the built-in ejection docking piece (12), and a second return spring (14) is fixedly connected to the outer side of the built-in ejection docking piece (12), and the second return spring (14) and the inner side of the reserved mold rod (10) are docked with each other.

8. The lipstick tube injection mold with closed-loop mold temperature control according to claim 7, characterized in that: During the process of the movable demoulding component (4) being forced to move outward, the built-in ejection docking component (12) is pushed by the contacting external guide member (11) to move laterally along the inner side of the reserved mold rod (10) until the built-in ejection docking component (12) moves to the outer end of the reserved mold rod (10).

9. The lipstick tube injection mold with closed-loop mold temperature control according to claim 8, characterized in that: The built-in ejection docking piece (12) forms an elastic support structure along the inner side of the reserved mold rod (10) through the second return spring (14), and after the built-in ejection docking piece (12) moves to the outer side of the reserved mold rod (10), the reserved through hole (13) outside the built-in ejection docking piece (12) is in an open non-closed state.

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