A mold assembly for paste secondary forming and a full-automatic lipstick machine thereof

Abstract

The present application relates to lipstick machine technical field, especially to a kind of mould assembly of paste secondary forming and its full-automatic lipstick machine, including mould guide slide, paste forming mould and die changing mechanism, paste forming mould includes sliding plate slidingly connected on mould guide slide, the mould cavity piece for forming paste and opening upward, fixed plate for positioning device mould cavity piece and fixedly installed on sliding plate, transition plate for fixing mould cavity piece by being positioned cover on fixed plate, and insert plate positioned on transition plate and acting on mould cavity piece, transition through hole corresponding to the opening of mould cavity piece is formed on transition plate;Mould is moved to specified position by mould guide slide and then cooling operation is carried out, then the operation of automatically taking and placing transition plate and insert plate is achieved by die changing mechanism, so that mould cavity piece can realize paste secondary forming operation, and the operation can achieve the purpose of die changing automation.

Description

Technical Field

[0001] This invention relates to the field of lipstick machine technology, and in particular to a mold assembly for secondary molding of lipstick paste and its fully automatic lipstick machine. Background Technology

[0002] Lipstick, as a cosmetic product, enhances facial beauty and corrects lip contours. After the raw materials for lipstick are formulated, a filling machine fills the mold with the raw materials in a predetermined amount. After cooling and solidification, the lipstick is removed and packaged to make lipstick.

[0003] To automate the above steps, thereby eliminating labor costs and improving production efficiency, the inventors have proposed an automated small linear lipstick machine as described in patent application publication number CN114259120A. The cooling mechanism, mold conveying mechanism, paste filling mechanism, packaging material positioning and conveying mechanism, and packaging material clamping paste filling mechanism are all integrated with the frame. The cooling tunnel is designed as a ring structure, with one air inlet and two air outlets. The cooling tunnel is divided into upper and lower layers. The upper layer is inlaid with strip-shaped wear-resistant tracks for the paste forming mold to slide and be conveyed. The lower layer is open and sealed, through which cold air passes and circulates, achieving cooling throughout the process while the paste forming mold is being conveyed. Its simple structure allows the cooling mechanism and mold conveying mechanism to work together, with low precision requirements and significantly reduced costs, thus achieving the goal of fully automated lipstick production.

[0004] However, as people's demands for lipsticks continue to increase, some lipsticks have a sandwich structure, with an inner layer of lip balm and an outer layer of tinted lipstick, or the inner and outer layers being different colors, which improves the lipstick's functionality and richness. Lipsticks that sandwich another lipstick in the middle of the traditional lipstick are basically produced manually and cannot achieve fully automated production. Therefore, it is necessary to propose a new technical solution to address the above problems. Summary of the Invention

[0005] To overcome the shortcomings mentioned above, the present invention aims to provide a technical solution that can solve the above problems.

[0006] A mold assembly for secondary molding of paste includes a mold guide slide, a paste molding mold, and a mold changing mechanism. The paste molding mold includes a sliding plate slidably connected to the mold guide slide, a mold cavity component for molding paste with its opening facing upward, a fixing plate fixedly mounted on the sliding plate for positioning the mold cavity component, a transition plate positioned and covered on the fixing plate for fixing the mold cavity component, and an insert plate positioned on the transition plate and acting on the mold cavity component. A transition through hole corresponding to the opening of the mold cavity component is provided on the transition plate, and a downwardly extending sandwich insert is provided on the insert plate. The sandwich insert extends into the inner bottom of the mold cavity component along the transition through hole. The mold changing mechanism includes a first fixed frame fixed relative to the mold guide slide, a first transverse linear module mounted on the first fixed frame and located above the sliding plate, and a mold clamping manipulator powered by the first transverse linear module. The mold clamping manipulator includes a first longitudinal linear module powered by the first transverse linear module and a mold clamping cylinder powered by the first longitudinal linear module. Mold release parts are respectively provided on both sides of the fixed plate on the sliding plate. Gripping parts for being gripped by the mold clamping cylinder are provided on the transition plate and the insert plate. The transition plate and the insert plate are gripped by the mold clamping cylinder through the gripping parts, and the transition plate or insert plate is placed on the mold release part or connected to the fixed plate by the action of the first transverse linear module and the first longitudinal linear module.

[0007] Preferably, the insert plate is provided with a filling notch that aligns with the transition through hole on one side of the insert plate located in the sandwich insert.

[0008] Preferably, the sliding plate has a first mold-laying portion for placing the insert plate and a second mold-laying portion for placing the transition plate. Both the first and second mold-laying portions are provided with clearance portions and first positioning holes, and the positions of the first positioning holes on the first and second mold-laying portions are different. A first positioning pin is formed at the lower end of the insert plate, engaging with the first positioning hole. The insert plate is positioned on the first mold-laying portion by the cooperation of the first positioning pin and the first positioning hole, and the first mold-laying portion allows for clearance cooperation with the sandwich insert. A second positioning hole corresponding to the first positioning pin is provided at the upper end of the transition plate. The insert plate is positioned on the transition plate by the cooperation of the first positioning pin and the second positioning hole. A second positioning pin is provided at the lower end of the transition plate. The transition plate is positioned on the second mold-laying portion by the cooperation of the second positioning pin and the first positioning hole, and the second mold-laying portion allows for clearance cooperation with the transition through hole. A third positioning hole corresponding to the second positioning pin is provided on the fixed plate. The transition plate is positioned on the fixed plate by the cooperation of the second positioning pin and the third positioning hole.

[0009] Preferably, a first magnet that magnetically attracts each other is embedded in both the fixed plate and the transition plate, and the fixed plate and the transition plate are magnetically attracted through the first magnet; a second magnet that magnetically attracts each other is embedded in both the transition plate and the insert plate, and the transition plate and the insert plate are magnetically attracted through the second magnet.

[0010] Preferably, the clamping manipulator has two clamping cylinders, each with four grippers. The gripping parts on the transition plate and insert plate are slot structures located at their four corners, and the four grippers are adapted to the slot structures.

[0011] A fully automatic lipstick machine includes a mold assembly for secondary molding of lipstick as described above, and also includes a machine body. The mold guide slide is provided in multiple sections, and the multiple mold guide slide sections form an enclosing slide by right-angle turns and are installed on the machine body. Each mold guide slide section has multiple lipstick molding molds. The machine body is provided with a mold pushing mechanism at each mold guide slide section for pushing at least one lipstick molding mold. The lipstick molding mold on each mold guide slide section moves stepwise by being pushed by the mold pushing mechanism. Along the moving direction of the paste forming mold, the machine body is provided with a first raw material injection mechanism corresponding to the mold cavity, a first paste cooling chamber covering at least a section of the mold guide slide, a second raw material injection mechanism corresponding to the mold cavity, and a second paste cooling chamber covering at least a section of the mold guide slide. A cooling circulation system connected to the first paste cooling chamber and the second paste cooling chamber is provided inside the machine body. The enclosing slide is provided with a receiving part between the first raw material injection mechanism and the second paste cooling chamber. The machine body is also equipped with a packaging material conveying mechanism that docks with the receiving part and a paste receiving mechanism for picking up and placing the paste formed on the receiving part onto the packaging material conveying mechanism. The mold changing mechanism includes a first mold changing mechanism, a second mold changing mechanism, a third mold changing mechanism, and a fourth mold changing mechanism. The first and second mold changing mechanisms are located between the first raw material injection mechanism and the paste receiving mechanism. The first and second mold changing mechanisms are used to pick up the transition plate and the insert plate from the mold release position and place them on the fixed plate, respectively. The third mold changing mechanism is located between the first paste cooling chamber and the second raw material injection mechanism. The third mold changing mechanism is used to pick up the insert plate from the fixed plate and place it on the mold release position. The fourth mold changing mechanism is located between the second cooling chamber and the paste receiving mechanism. The fourth mold changing mechanism is used to pick up the transition plate from the fixed plate and place it on the mold release position.

[0012] Preferably, the packaging material conveying mechanism includes a circular conveyor line, multiple packaging material positioning fixtures disposed on the circular conveyor line and periodically moving in a circular motion driven by the circular conveyor line, and ointment packaging material inserted into the packaging material positioning fixtures.

[0013] Preferably, the paste receiving mechanism includes a second fixed frame, a second transverse linear module mounted on the second fixed frame, a second longitudinal linear module powered by the second transverse linear module, a flipping bracket powered by the second linear module, a rotating seat rotatably connected to the flipping bracket, a transfer motor mounted on the flipping bracket and powered by the rotating seat, and a clamping cylinder mounted on the rotating seat for clamping the paste packaging material; the clamping cylinder moves between the receiving area and the packaging material conveying mechanism via the second transverse linear module, moves up and down via the second longitudinal linear module, and rotates 180° via the transfer motor.

[0014] Preferably, an air supply port and an exhaust port connected to the cooling circulation system are provided on the machine body at a position inside the first paste cooling chamber and the second paste cooling chamber. A closed groove is provided on the machine body at a position inside the mold guide slide. The air supply port and the exhaust port are located at the two ends of the closed groove, and the closed groove is connected to the lower end of the fixed plate, so that the mold cavity is placed in the closed groove.

[0015] Preferably, the machine body is further provided with a first hot air mechanism, a second hot air mechanism, a third hot air mechanism, and a blower mechanism corresponding to the paste forming mold. The first hot air mechanism acts on the paste forming mold between the second mold changing mechanism and the first raw material injection mechanism; the second hot air mechanism acts on the paste forming mold between the first cooling chamber and the third mold changing mechanism; the third hot air mechanism acts on the paste forming mold between the second raw material injection mechanism and the second paste cooling chamber; and the blower mechanism acts on the paste forming mold between the second hot air mechanism and the third mold changing mechanism.

[0016] Compared with the prior art, the beneficial effects of the present invention are: By using a sliding plate, mold cavity components, fixed plate, transition plate, and insert plate to form a paste molding mold, the mold assembly incorporates a mold guide slide, a sliding plate, and a mold changing mechanism. Through the sliding cooperation between the sliding plate and the mold guide slide, the entire mold assembly can be applied to an automated production line. The mold guide slide moves the mold to a designated position for injection or cooling operations. Then, the mold changing mechanism automatically picks up and places the transition plate and insert plate, enabling the mold cavity components to perform secondary paste molding operations. This operation also achieves the goal of automating mold changing. A fully automatic lipstick machine is set up using a mold assembly for secondary molding of lipstick. Multiple lipstick molding molds are moved in a cyclical stepping manner by using an enclosing slide combined with a mold pushing mechanism. A first raw material injection mechanism, a first lipstick cooling chamber, a second raw material injection mechanism, a second lipstick cooling chamber, a packaging material conveying mechanism, and a lipstick receiving mechanism are set up along this moving path. This achieves fully automated operation of two injections, two coolings, and lipstick receiving. Users only need to replenish raw materials periodically and collect finished products and replenish empty lipstick packaging materials in a timely manner, which can greatly reduce labor costs and improve production efficiency. The arrangement of the first mold changing mechanism, the second mold changing mechanism, the third mold changing mechanism and the fourth mold changing mechanism enables the paste molding mold to perform insert plate and transition plate picking and placing operations on the moving path, thereby achieving fully automatic secondary injection operation of the paste molding mold on the moving path, thus realizing fully automated mold changing operation.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the mold assembly in this invention; Figure 2 This is a schematic diagram of the paste forming mold and clamping cylinder in this invention; Figure 3 This is an exploded structural diagram of the paste forming mold in this invention; Figure 4 This is a schematic diagram of the fully automatic lipstick machine in this invention; Figure 5 This is a structural schematic diagram of the installation positions of the enclosing slide and the mold pushing mechanism in this invention; Figure 6 This is a schematic diagram of the structure of each mechanism of the present invention installed on the main plate of the machine body; Figure 7 This is a schematic diagram of the packaging material conveying mechanism in this invention; Figure 8 This is a schematic diagram of the paste receiving mechanism in this invention; Figure 9This is a schematic diagram of the structure of the body of the present invention at the location corresponding to the second paste cooling chamber.

[0020] The reference numerals and names in the figure are as follows: Mold guide slide 10, material receiving part 11, paste molding mold 20, sliding plate 21, mold releasing part 211, clearance part 212, first positioning hole 213, mold cavity part 22, fixing plate 23, third positioning hole 231, transition plate 24, transition through hole 241, second positioning hole 242, second positioning pin 243, insert plate 25, sandwich insert 251, injection notch 252, first positioning pin 253, gripping part 26, first magnet 27, second magnet 28, mold changing mechanism 30, first mold changing mechanism 301, second mold changing mechanism 302, third mold changing mechanism 303, fourth mold changing mechanism 304, first fixing frame 31, first transverse linear module 32, first longitudinal linear module 33. Clamping cylinder; 34. Clamping jaw; 341. Machine body; 40. Mold pushing mechanism; 41. First raw material injection mechanism; 42. First paste cooling chamber; 43. Second raw material injection mechanism; 44. Second paste cooling chamber; 45. Cooling circulation system; 46. Air supply port; 47. Exhaust port; 48. Sealing groove; 49. Packaging material conveying mechanism; 50. Circular conveyor line; 51. Packaging material positioning fixture; 52. Paste packaging material; 53. Paste receiving mechanism; 60. Second fixing frame; 61. Second transverse linear module; 62. Second longitudinal linear module; 63. Flipping bracket; 64. Rotating seat; 65. Transfer motor; 66. Clamping cylinder; 67. First hot air mechanism; 70. Second hot air mechanism; 80. Third hot air mechanism; 90. Blowing mechanism; 100. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1-3In this embodiment of the invention, a mold assembly for secondary molding of paste includes a mold guide slide 10, a paste molding mold 20, and a mold changing mechanism 30. The paste molding mold 20 includes a sliding plate 21 slidably connected to the mold guide slide 10, a mold cavity 22 for molding paste with its opening facing upward, a fixing plate 23 fixedly installed on the sliding plate 21 for positioning the mold cavity 22, a transition plate 24 positioned and covered on the fixing plate 23 for fixing the mold cavity 22, and an insert plate 25 positioned on the transition plate 24 and acting on the mold cavity 22. A transition through hole 241 corresponding to the opening of the mold cavity 22 is provided on the transition plate 24. A sandwich insert 251 extending downward is provided on the insert plate 25. The sandwich insert 251 extends into the inner bottom of the mold cavity 22 along the transition through hole 241. The mold changing mechanism 30 includes a first fixed frame 31 fixed relative to the mold guide slide 10, a first transverse linear module 32 mounted on the first fixed frame 31 and located above the sliding plate 21, and a mold clamping manipulator powered by the first transverse linear module 32. The mold clamping manipulator includes a first longitudinal linear module 33 powered by the first transverse linear module 32 and a mold clamping cylinder 34 powered by the first longitudinal linear module 33. Mold release parts 211 are respectively provided on the sliding plate 21 at positions on both sides of the fixed plate 23. Grasping parts 26 for being gripped by the mold clamping cylinder 34 are provided on the transition plate 24 and the insert plate 25. The transition plate 24 and the insert plate 25 are gripped by the mold clamping cylinder 34 through the gripping parts 26, and the transition plate 24 or the insert plate 25 is placed on the mold release part 211 or connected to the fixed plate 23 by the action of the first transverse linear module 32 and the first longitudinal linear module 33.

[0023] A paste forming mold 20 is constructed using a sliding plate 21, a mold cavity 22, a fixed plate 23, a transition plate 24, and an insert plate 25. The mold cavity 22 serves as the main mold cavity for paste forming. The mold cavity 22 is fixed to the fixed plate 23, and then the fixed plate 23 is fixedly installed on the sliding plate 21. The sliding plate 21 has two mold placement parts 211 to place the transition plate 24 and the insert plate 25 respectively. The transition through hole 241 on the transition plate 24 and the mold cavity 22 are used to form the entire paste. By removing and placing the transition plate 24, the upper end of the formed paste can be exposed. The insert plate 25 is designed to facilitate the removal of the paste from the mold cavity 22. The insert plate 25 is designed to extend into the bottom of the mold cavity 22 by setting a sandwich insert 251. After the paste is injected into the mold cavity 22, the sandwich insert 251 restricts the paste so that a through hole is formed in the middle of the molded paste. After the insert plate 25 is placed on the mold release part 211, the mold cavity 22 is injected again. The injection is carried out along the through hole after the sandwich insert 251 is pulled out, so that the through hole is filled with other raw materials. After cooling and molding, a paste with a sandwich structure is formed. The mold assembly incorporates a mold guide slide 10, a sliding plate 21, and a mold changing mechanism 30. Through the sliding cooperation between the sliding plate 21 and the mold guide slide 10, the entire mold assembly can be used on an automated production line. The mold guide slide 10 moves the mold to a designated position for injection or cooling operations. Then, the mold changing mechanism 30 automatically picks up and places the transition plate 24 and the insert plate 25, enabling the mold cavity 22 to perform secondary molding of the paste. This operation achieves the purpose of automating mold changing.

[0024] Please see Figure 3 During the first injection of raw materials, the raw materials can be injected into the mold cavity 22 first, and then the insert plate 25 can be closed. The raw materials after closing can just fill the transition through hole 241. Alternatively, the insert plate 25 can be closed on the transition plate 24. The insert plate 25 has an injection notch 252 on one side of the sandwich insert 251 that aligns with the transition through hole 241. After the insert plate 25 is closed, the raw materials are injected into the mold cavity 22 along the injection notch 252. After the raw materials cool and solidify, the insert plate 25 can be removed, and the sandwich insert 251 can be extracted, thus allowing for the second injection of raw materials.

[0025] Based on the cooperation between the insert plate 25 and the transition plate 24 with the mold-laying portion 211, this embodiment provides a first mold-laying portion 211 for placing the insert plate 25 and a second mold-laying portion 211 for placing the transition plate 24 on the sliding plate 21. Both the first and second mold-laying portions 211 are provided with clearance portions 212 and first positioning holes 213, and the positions of the first positioning holes 213 on the first and second mold-laying portions 211 are different. A first positioning pin 253 is formed at the lower end of the insert plate 25, which engages with the first positioning hole 213. The insert plate 25 is positioned on the first mold-laying portion 211 by the cooperation of the first positioning pin 253 and the first positioning hole 213, and the first mold-laying portion 211 is positioned by the clearance portions 212 and 213. 2. The insert plate 25 is positioned on the transition plate 24 by the cooperation of the first positioning pin 253 with the sandwich insert 251. The upper end of the transition plate 24 is provided with a second positioning hole 242 corresponding to the first positioning pin 253. The insert plate 25 is positioned on the transition plate 24 by the cooperation of the first positioning pin 253 with the second positioning hole 242. The lower end of the transition plate 24 is provided with a second positioning pin 243. The transition plate 24 is positioned on the second mold release part 211 by the cooperation of the second positioning pin 243 with the first positioning hole 213. The second mold release part 211 is provided with a clearance part 212 to cooperate with the transition through hole 241. The fixed plate 23 is provided with a third positioning hole 231 corresponding to the second positioning pin 243. The transition plate 24 is positioned on the fixed plate 23 by the cooperation of the second positioning pin 243 with the third positioning hole 231. The positioning pins are designed with rounded ends, and the positioning holes are chamfered to provide guidance when they are mated. Generally, at least two sets of positioning pins and positioning holes are required to ensure the stability and accuracy of the positioning between the insert plate 25 and the transition plate 24, and between the transition plate 24 and the fixed plate 23. Similarly, this also ensures the stability and accuracy of the placement of the insert plate 25 and the transition plate 24 on the first mold placement part 211 and the second mold placement part 211, respectively.

[0026] Furthermore, first magnets 27 that magnetically attract each other are embedded in both the fixed plate 23 and the transition plate 24, and the fixed plate 23 and the transition plate 24 are magnetically attracted through the first magnets 27; second magnets 28 that magnetically attract each other are embedded in both the transition plate 24 and the insert plate 25, and the transition plate 24 and the insert plate 25 are magnetically attracted through the second magnets 28; by adopting the magnetic attraction method, the fit between the insert plate 25, the transition plate 24 and the positioning plate can be made tighter and more secure.

[0027] Please see Figure 2The clamping manipulator has two clamping cylinders 34, each with four grippers 341. The gripping parts 26 on the transition plate 24 and the insert plate 25 are slot structures located at their four corners. The four grippers 341 are adapted to the slot structures. This configuration enables stable lifting and lowering operations after gripping the insert plate 25 and the transition plate 24. In particular, for the operation of removing the insert plate 25 from the core insert 251, the use of four grippers 341 and four slot structures can ensure the efficiency of removing the core insert 251.

[0028] Please see Figure 4-9 Based on the aforementioned mold assembly for secondary molding of lipstick paste, a fully automatic lipstick machine is provided, including a machine body 40. The mold guide slide 10 has multiple segments, which form an enclosing slide at right angles and are mounted on the machine body 40. Each segment of the mold guide slide 10 has multiple lipstick molding molds 20. A mold pushing mechanism 41 for pushing at least one lipstick molding mold 20 is provided on the machine body 40 at the position of each segment of the mold guide slide 10. The paste forming mold 20 moves in a step-by-step manner by being pushed by the mold pushing mechanism 41. The mold pushing mechanism 41 generally uses a cylinder as a power source to push the paste forming mold 20 one by one. Each mold guide slide 10 has a space for one paste forming mold 20. All mold pushing mechanisms 41 operate at the same time, so that the paste forming mold 20 at the end of each mold guide slide 10 is pushed into the beginning of the next mold guide slide 10, thereby achieving the function of step-by-step pushing of the paste forming mold 20. By periodically moving the paste in a stepping motion, the machine body 40 is sequentially equipped with a first raw material injection mechanism 42 corresponding to the mold cavity 22, a first paste cooling chamber 43 covering at least one section of the mold guide slide 10, a second raw material injection mechanism 44 corresponding to the mold cavity 22, and a second paste cooling chamber 45 covering at least one section of the mold guide slide 10. A cooling circulation system 46 is provided inside the machine body 40, connecting to the first paste cooling chamber 43 and the second paste cooling chamber 45. This allows the paste molding mold 20 to perform sequential operations of primary injection, cooling, secondary injection, and cooling during the stepping motion, and further enhances the cooling effect by enclosing the slide. The part located between the first raw material injection mechanism 42 and the second paste cooling chamber 45 is provided with a receiving part 11. The machine body 40 is also equipped with a packaging material conveying mechanism 50 that docks with the receiving part 11 and a paste receiving mechanism 60 for picking up the paste formed on the receiving part 11 and placing it onto the packaging material conveying mechanism 50; so that the formed paste can be automatically removed from the paste forming mold 20; preferably, since the second forming of the paste is for the sandwich part, the ratio of the outer paste to the sandwich paste is generally 3:1. Therefore, the first paste cooling chamber 43 is provided with three sections to cover three sections of the mold guide slide 10, while the second paste cooling chamber 45 is provided with one section to cover one section of the mold guide slide 10; Furthermore, based on the loading and unloading operations of the insert plate 25 and the transition plate 24 during the entire movement of the paste molding mold 20, the position and number of the mold changing mechanism 30 were set. The mold changing mechanism 30 is provided with a first mold changing mechanism 301, a second mold changing mechanism 302, a third mold changing mechanism 303, and a fourth mold changing mechanism 304. The first mold changing mechanism 301 and the second mold changing mechanism 302 are located between the first raw material injection mechanism 42 and the paste receiving mechanism 60. The first mold changing mechanism 301 and the second mold changing mechanism 302 are separate. The third mold changing mechanism 303 is located between the first paste cooling chamber 43 and the second raw material injection mechanism 44. The third mold changing mechanism 303 is used to pick up the insert plate 25 from the fixed plate 23 and place it onto the mold releasing part 211. The fourth mold changing mechanism 304 is located between the second cooling chamber and the paste receiving mechanism 60. The fourth mold changing mechanism 304 is used to pick up the transition plate 24 from the fixed plate 23 and place it onto the mold releasing part 211.

[0029] The steps for forming the entire paste are as follows: Step 1: The first mold changing mechanism 301 and the second mold changing mechanism 302 respectively stack the insert plate and the transition plate 24 onto the fixed plate 23 to complete the mold cavity closing operation. Step 2: The molded paste molding mold 20 after mold closing is pushed to the position of the first raw material injection mechanism 42 by the mold pushing mechanism 41, and the raw material injection mechanism injects a raw material into the paste molding mold 20. Step 3: The paste forming mold 20, into which a raw material is injected, is pushed by the mold pushing mechanism 41 to the first paste cooling chamber 43 for cooling, so that the raw material is cooled to form a preliminary paste. Step 4: The mold 20 for forming the preliminary paste is pushed to the third mold changing mechanism 303 by the mold pushing mechanism 41. The third mold changing mechanism 303 vertically picks up the insert plate 25 and places it on the first mold placement part 211, so that the middle part of the preliminary paste is empty. Step 5: The paste molding mold 20 with the insert plate 25 removed is pushed to the position of the second raw material injection mechanism 44 by the mold pushing mechanism 41. The raw material injection mechanism injects another raw material into the paste molding mold 20. Step 6: The mold 20 containing another raw material is pushed to the second paste cooling chamber 45 by the mold pushing mechanism 41 for cooling, so that the other raw material is cooled and combined with the preliminary paste to form the finished paste. Step 7: The mold 20 containing the finished paste is pushed to the fourth mold changing mechanism 304 by the mold pushing mechanism 41. The fourth mold changing mechanism 304 vertically places the transition plate 24 onto the second mold release part 211, so that the upper end of the finished paste is exposed. Step 8: The mold 20 containing the finished paste is pushed to the receiving part 11 by the mold pushing mechanism 41. The finished paste is then picked up and placed into the paste packaging material 53 by the paste receiving mechanism 60, and then placed on the packaging material conveying mechanism 50 to complete the discharge.

[0030] Therefore, by using a mold assembly for secondary molding of lipstick, a fully automatic lipstick machine is set up. By adopting an enclosing slide combined with a mold pushing mechanism 41, multiple lipstick molding molds 20 are moved in a cyclic stepping manner. A first raw material injection mechanism 42, a first lipstick cooling chamber 43, a second raw material injection mechanism 44, a second lipstick cooling chamber 45, a packaging material conveying mechanism 50, and a lipstick receiving mechanism 60 are set up on this moving path. This achieves fully automated operation of two injections, two coolings, and lipstick receiving. Users only need to replenish raw materials regularly and collect finished products and replenish empty lipstick packaging materials 53 in a timely manner, which can greatly reduce labor costs and improve production efficiency. The arrangement of the first mold changing mechanism 301, the second mold changing mechanism 302, the third mold changing mechanism 303 and the fourth mold changing mechanism 304 enables the paste molding mold 20 to perform the picking and placing operations of the insert plate 25 and the transition plate 24 on the moving path, thereby achieving fully automatic secondary injection operation of the paste molding mold 20 on the moving path, thus realizing the fully automated operation of mold changing.

[0031] Please see Figure 7 The packaging material conveying mechanism 50 includes a ring conveyor line 51, multiple packaging material positioning fixtures 52 disposed on the ring conveyor line 51 and periodically moving in a ring shape driven by the ring conveyor line 51, and a paste packaging material 53 inserted into the packaging material positioning fixtures 52; the packaging material conveying mechanism 50 can refer to the lipstick machine dispensing mechanism with an automatic packaging material rotating assembly described in the invention patent authorization announcement number CN219524382U.

[0032] Please see Figure 8 The paste receiving mechanism 60 includes a second fixed frame 61, a second transverse linear module 62 mounted on the second fixed frame 61, a second longitudinal linear module 63 powered by the second transverse linear module 62, a flipping bracket 64 powered by the second linear module, a rotating seat 65 rotatably connected to the flipping bracket 64, a transfer motor 66 mounted on the flipping bracket 64 and powered by the rotating seat 65, and a clamping cylinder 67 mounted on the rotating seat 65 for clamping the paste packaging material 53. The clamping cylinder 67 moves between the receiving part 11 and the packaging material conveying mechanism 50 via the second transverse linear module 62, moves up and down via the second longitudinal linear module 63, and rotates 180° via the transfer motor 66. The assembly of the material-receiving mechanism 60, including the material-turning bracket 64, rotating seat 65, material-turning motor 66, and clamping cylinder 67, can refer to the flipping clamping mechanism for a small straight-line lipstick machine described in the invention patent authorization announcement number CN216468767U.

[0033] Please see Figure 9 On the machine body 40, air supply ports 47 and exhaust ports 48 are provided at positions within the first paste cooling chamber 43 and the second paste cooling chamber 45, respectively, and are connected to the cooling circulation system 46. A sealing groove 49 is provided on the machine body 40 at a position within the mold guide slide 10. The air supply ports 47 and exhaust ports 48 are located at the two ends of the sealing groove 49, and the sealing groove 49 is connected to the lower end of the fixing plate 23, so that the mold cavity 22 is placed in the sealing groove 49. Through the setting of the sealing groove 49, the mold cavity 22 at the lower end of the paste forming mold 20 passing through the sealing groove 49 can be sealed in the sealing groove 49. Then, through the cooperation of the air supply ports 47 and exhaust ports 48, cold air is circulated to fully cool the paste in the mold cavity 22.

[0034] Please see Figure 6 The machine body 40 is also equipped with a first hot air mechanism 70, a second hot air mechanism 80, a third hot air mechanism 90, and a blower mechanism 100 corresponding to the paste forming mold 20. The first hot air mechanism 70 acts on the paste forming mold 20 between the second mold changing mechanism 302 and the first raw material injection mechanism 42; the second hot air mechanism 80 acts on the paste forming mold 20 between the first cooling chamber and the third mold changing mechanism 303; the third hot air mechanism 90 acts on the paste forming mold 20 between the second raw material injection mechanism 44 and the second paste cooling chamber 45; and the blower mechanism 100 acts on the paste forming mold 20 between the second hot air mechanism 80 and the third mold changing mechanism 303. The first hot air mechanism 70 is used to fully heat the mold cavity 22, so that no air bubbles are generated between the injected raw material and the mold cavity; the second hot air mechanism 80 is used to heat the sandwich insert 251, so that the paste in contact with the sandwich insert 251 is melted to a certain extent, so that the sandwich insert 251 will not damage the empty part in the middle of the paste during the extraction process; the blower mechanism 100 rapidly cools down the sandwich insert, so as to prevent the sandwich insert 251 from being heated for too long and causing the paste to melt further; the third hot air mechanism 90 is used to heat the secondary injected raw material, so that the secondary injected raw material and the already formed paste are fully combined, and the upper ends of the two materials can remain flat.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0036] The machine body is also equipped with a first hot air mechanism, a second hot air mechanism, a third hot air mechanism, and a blower mechanism corresponding to the paste forming mold. The first hot air mechanism acts on the paste forming mold between the second mold changing mechanism and the first raw material injection mechanism; the second hot air mechanism acts on the paste forming mold between the first cooling chamber and the third mold changing mechanism; the third hot air mechanism acts on the paste forming mold between the second raw material injection mechanism and the second paste cooling chamber; and the blower mechanism acts on the paste forming mold between the second hot air mechanism and the third mold changing mechanism.

Claims

1. A fully automatic lipstick machine characterized in that, The mold includes a mold guide slide, a paste forming mold, and a mold changing mechanism. The paste forming mold includes a sliding plate slidably connected to the mold guide slide, a mold cavity component for forming paste with its opening facing upward, a fixing plate fixedly mounted on the sliding plate for positioning the mold cavity component, a transition plate positioned and covered on the fixing plate for fixing the mold cavity component, and an insert plate positioned on the transition plate and acting on the mold cavity component. A transition through hole corresponding to the opening of the mold cavity component is provided on the transition plate, and a sandwich insert extending downward is provided on the insert plate. The sandwich insert extends into the inner bottom of the mold cavity component along the transition through hole. The mold changing mechanism includes a first fixed frame fixed relative to the mold guide slide, a first transverse linear module mounted on the first fixed frame and located above the sliding plate, and a mold clamping manipulator powered by the first transverse linear module. The mold clamping manipulator includes a first longitudinal linear module powered by the first transverse linear module and a mold clamping cylinder powered by the first longitudinal linear module. Mold release parts are respectively provided on both sides of the fixed plate on the sliding plate. Gripping parts for being gripped by the mold clamping cylinder are provided on the transition plate and the insert plate. The transition plate and the insert plate are gripped by the mold clamping cylinder through the gripping parts, and the transition plate or insert plate is placed on the mold release part or connected to the fixed plate by the action of the first transverse linear module and the first longitudinal linear module. It also includes the machine body, and the mold guide slide is provided in multiple sections. The multiple mold guide slides form an enclosing slide by right-angle turns and are installed on the machine body. Each mold guide slide has multiple paste forming molds. The machine body is provided with a mold pushing mechanism at the position of each mold guide slide for pushing at least one paste forming mold. The paste forming mold on each mold guide slide moves stepwise by being pushed by the mold pushing mechanism. Along the moving direction of the paste forming mold, the machine body is provided with a first raw material injection mechanism corresponding to the mold cavity, a first paste cooling chamber covering at least a section of the mold guide slide, a second raw material injection mechanism corresponding to the mold cavity, and a second paste cooling chamber covering at least a section of the mold guide slide. A cooling circulation system connected to the first paste cooling chamber and the second paste cooling chamber is provided inside the machine body. The enclosing slide is provided with a receiving part between the first raw material injection mechanism and the second paste cooling chamber. The machine body is also equipped with a packaging material conveying mechanism that docks with the receiving part and a paste receiving mechanism for picking up and placing the paste formed on the receiving part onto the packaging material conveying mechanism. The mold changing mechanism includes a first mold changing mechanism, a second mold changing mechanism, a third mold changing mechanism, and a fourth mold changing mechanism. The first and second mold changing mechanisms are located between the first raw material injection mechanism and the paste receiving mechanism. The first and second mold changing mechanisms are used to pick up the transition plate and the insert plate from the mold release position and place them on the fixed plate, respectively. The third mold changing mechanism is located between the first paste cooling chamber and the second raw material injection mechanism. The third mold changing mechanism is used to pick up the insert plate from the fixed plate and place it on the mold release position. The fourth mold changing mechanism is located between the second cooling chamber and the paste receiving mechanism. The fourth mold changing mechanism is used to pick up the transition plate from the fixed plate and place it on the mold release position.

2. The full-automatic lipstick machine according to claim 1, characterized in that, The insert plate is also provided with a slurry notch that aligns with the transition through hole on one side of the insert plate.

3. The full-automatic lipstick machine according to claim 1, characterized in that, The sliding plate has a first mold-laying section for placing the insert plate and a second mold-laying section for placing the transition plate. Both the first and second mold-laying sections are provided with clearance sections and first positioning holes, and the positions of the first positioning holes on the first and second mold-laying sections are different. A first positioning pin is formed at the lower end of the insert plate, which mates with the first positioning hole. The insert plate is positioned on the first mold-laying section by the cooperation of the first positioning pin and the first positioning hole, and the first mold-laying section makes room for the sandwich insert through the clearance section. A second positioning hole corresponding to the first positioning pin is provided at the upper end of the transition plate. The insert plate is positioned on the transition plate by the cooperation of the first positioning pin and the second positioning hole. A second positioning pin is provided at the lower end of the transition plate. The transition plate is positioned on the second mold-laying section by the cooperation of the second positioning pin and the first positioning hole, and the second mold-laying section makes room for the transition through hole through the clearance section. A third positioning hole corresponding to the second positioning pin is provided on the fixed plate. The transition plate is positioned on the fixed plate by the cooperation of the second positioning pin and the third positioning hole.

4. The full-automatic lipstick machine according to claim 3, characterized in that, Both the fixed plate and the transition plate are inlaid with first magnets that magnetically attract each other, and the fixed plate and the transition plate are magnetically attracted by the first magnets; both the transition plate and the insert plate are inlaid with second magnets that magnetically attract each other, and the transition plate and the insert plate are magnetically attracted by the second magnets.

5. The full-automatic lipstick machine according to claim 1, characterized in that, The clamping robot arm has two clamping cylinders, each with four grippers. The gripping parts on the transition plate and insert plate are slot structures located at the four corners, and the four grippers are adapted to the slot structures.

6. The full-automatic lipstick machine according to claim 1, characterized in that, The packaging material conveying mechanism includes a circular conveyor line, multiple packaging material positioning fixtures arranged on the circular conveyor line and moving in a periodic circular motion driven by the circular conveyor line, and ointment packaging materials inserted into the packaging material positioning fixtures.

7. The fully automatic lipstick machine according to claim 6, characterized in that, The paste receiving mechanism includes a second fixed frame, a second transverse linear module mounted on the second fixed frame, a second longitudinal linear module powered by the second transverse linear module, a flipping bracket powered by the second linear module, a rotating seat rotatably connected to the flipping bracket, a transfer motor mounted on the flipping bracket and powered by the rotating seat, and a clamping cylinder mounted on the rotating seat for clamping the paste packaging material; the clamping cylinder moves between the receiving area and the packaging material conveying mechanism via the second transverse linear module, moves up and down via the second longitudinal linear module, and rotates 180° via the transfer motor.

8. The full-automatic lipstick machine according to claim 1, characterized in that, Air supply ports and exhaust ports that connect to the cooling circulation system are provided on the machine body at positions inside the first and second paste cooling chambers. A closed groove is provided on the machine body at a position inside the mold guide slide. The air supply ports and exhaust ports are located at the two ends of the closed groove, and the closed groove connects to the lower end of the fixed plate, so that the mold cavity is placed in the closed groove.

9. The full-automatic lipstick machine according to claim 1, characterized in that, The machine body is also equipped with a first hot air mechanism, a second hot air mechanism, a third hot air mechanism, and a blower mechanism corresponding to the paste forming mold. The first hot air mechanism acts on the paste forming mold between the second mold changing mechanism and the first raw material injection mechanism; the second hot air mechanism acts on the paste forming mold between the first cooling chamber and the third mold changing mechanism; the third hot air mechanism acts on the paste forming mold between the second raw material injection mechanism and the second paste cooling chamber; and the blower mechanism acts on the paste forming mold between the second hot air mechanism and the third mold changing mechanism.

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