Injection mold, injection molding machine, injection molding method and simulation plant

Abstract

The invention relates to the field of injection molds, in particular to an injection mold, an injection molding machine, an injection molding method and a simulation plant, the injection mold further comprises a multi-layer upper mold, the multi-layer upper mold comprises a third mold core plate and a fourth mold core plate, the third mold core plate is provided with a plurality of protruding third hollow columns, and the fourth mold core plate is provided with a plurality of second hollow columns. A plurality of convex fourth hollow columns are arranged on the fourth mold core plate; the fourth hollow column is arranged on the outer side of the third hollow column in a sleeving mode, a side cavity is formed between the third hollow column and the fourth hollow column, and the side cavity is in an inverted conical surface shape; the lower die comprises a lower die plate and a plurality of core pulling blocks connected to the lower die plate in a sliding mode and further comprises lower forming parts which are in an annular protruding shape, and the lower forming parts are distributed on the two or more core pulling blocks. A lower cavity is formed in the core pulling block, and the top of the lower cavity is communicated with the middle of the lower forming part; a main cavity is formed between the fourth hollow column and the lower forming part, and the side cavity is communicated with the main cavity. The method can be used for integrated injection molding of the artificial flower, the pedicel and the flower do not need to be manually assembled, and the formed flower is located at different heights on the pedicel.

Description

Technical Field

[0001] This invention relates to the field of injection molds, and in particular to an injection mold, an injection molding machine, an injection molding method, and artificial plants. Background Technology

[0002] Existing artificial flowers include flower stems and flowers. The flowers contain several layers of petals, which are sewn together by hand. The flower stems can have multiple branches of different lengths and heights, and then the flowers are attached to the top of the branches by hand.

[0003] For example, Chinese Patent Publication No. CN205030572U discloses "a simulated rose, including a hollow tubular stem portion with elasticity, a receptacle portion with elasticity sealed to the upper end of the stem portion, and a plurality of petal portions fixedly connected to the upper end of the receptacle portion; "a connector is integrally formed below the receptacle portion, the connector is inserted into the stem portion, and the outer wall of the connector is fixed to the inner wall of the stem portion by adhesive."

[0004] Artificial flowers with multiple blossoms on a single stem, such as baby's breath, multi-headed roses, and multi-headed lilies, require more manual labor, and manual installation has a higher defect rate, with the risk of the blossoms separating from the stem.

[0005] For example, Chinese Patent No. CN220088669U discloses "a simulated gerbera, including a support rod, multiple flowers and leaves, the support rod including a main support rod and multiple branch rods, each branch rod being arranged radially on the main support rod", and "each flower, from the inside out, includes a stamen, a corolla, a receptacle and a pedicel, the corolla including a first petal layer and a second petal layer, the upper end of the pedicel is connected to the stamen, and the pedicel passes through a first through hole, a second through hole and a third through hole in sequence to install the first petal layer, the second petal layer and the receptacle on the pedicel from top to bottom". Therefore, existing artificial flowers require manual assembly between the flowers and stems, resulting in low production efficiency, high cost, and the flowers are prone to falling off. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the purpose of this invention is to provide an injection mold, injection molding machine, injection molding method, and artificial plant that can be used for one-piece injection molding of artificial flowers without the need for manual assembly of flower stems and flowers, and the flowers can have various heights.

[0007] The technical solution adopted by this invention to solve the problem is: An injection mold includes a lower mold and a multi-layer upper mold. The multi-layer upper mold includes a third core plate and a fourth core plate. The third core plate has a plurality of raised third hollow pillars, and the fourth core plate has a plurality of raised fourth hollow pillars. The fourth hollow pillars are sleeved on the outside of the third hollow pillars, and a side cavity is provided between the third hollow pillars and the fourth hollow pillars. The side cavity is in the shape of an inverted cone. The lower mold includes a lower template and a plurality of core-pulling blocks slidably connected to the lower template. It also includes a lower forming part with an annular protrusion. One lower forming part is distributed on two or more core-pulling blocks. The core-pulling block has a lower cavity, and the top of the lower cavity is connected to the middle of the lower forming part. There is a main cavity between the fourth hollow pillars and the lower forming part, and the side cavity is connected to the main cavity.

[0008] As a preferred technical solution, each side cavity includes multiple spaced-apart side cavity units in the form of polygonal sheets.

[0009] As a preferred technical solution, different lower forming parts have the same or different heights, at least one of the core-pulling blocks is provided with a lower groove, and at least one of the lower forming parts is provided in the lower groove; the fourth mold core plate is provided with an upper groove, and at least part of the fourth hollow column is provided in the upper groove; different upper grooves have the same or different depths; different lower grooves have the same or different depths.

[0010] As a preferred technical solution, it further includes a first mold core plate and a second mold core plate. The first mold core plate is provided with a raised first hollow column, and the second mold core plate is provided with a raised second hollow column. The third hollow column is sleeved on the outside of the second hollow column, and a side cavity is provided between the second hollow column and the third hollow column. The second hollow column is sleeved on the outside of the first hollow column, and a side cavity is provided between the first hollow column and the second hollow column.

[0011] As a preferred technical solution, it also includes a sprue sleeve, which extends into the first hollow column, and a side cavity is also provided between the sprue sleeve and the first hollow column.

[0012] As a preferred technical solution, the multi-layer upper mold further includes an upper template, on which a hot runner plate is installed. The hot runner plate is provided with a horizontally arranged hot runner channel and a vertically arranged through-hole channel. The sprue sleeve is installed on the upper template, and the through-hole channel is connected to the sprue sleeve.

[0013] An injection molding machine includes the aforementioned injection mold, and further includes a first upper mold, an upper mounting plate, and a lower mounting plate. The upper mounting plate and the upper and lower mounting plates are arranged opposite each other vertically, and the lower mounting plate is rotatable in a horizontal plane. The lower mounting plate is provided with at least two lower molds, and the upper mounting plate is provided with the first upper mold and the multi-layer upper mold. The lower molds and the first upper molds cooperate to form a first mold cavity. The first upper mold is provided with a plurality of columnar upper mold cores, the end faces of the upper mold cores are provided with spherical surfaces, and the centers of the spherical surfaces are provided with blind holes. The first mold cavity includes the blind holes and the lower mold cavity.

[0014] An injection molding method, based on the aforementioned injection molding machine, includes the following steps: Step 1: The lower mold and the first upper mold are joined together to injection mold the flower stem; Step 2: The first upper mold opens, the lower mold drives the flower stem and the sprue on the flower stem to rotate at a certain angle, the multi-layer upper mold moves downward and closes with the lower mold, and the flower is injection molded on the flower stem to obtain the injection molded product; Step 3: The multi-layered upper mold moves upward to open, and the lower mold rotates at a certain angle; Step four: The core-pulling block moves and disengages from the flower stem. The external robotic arm moves to the vicinity of the lower mold, grips the sprue material, and lifts the injection-molded product upward to detach it from the lower mold.

[0015] An artificial plant, comprising flowers and a stem, wherein the flowers contain at least two layers of petals, is integrally molded using the injection molding method described above.

[0016] The beneficial effects of this invention are: 1. The multi-layer upper mold of this application can be used for injection molding of layered petals, and can be used to mold at least one layer of petals at one time. It can be used in conjunction with the peripheral, existing lower mold to integrally mold flowers and stems. 2. Due to the upper groove, at least part of the fourth hollow column is located in the upper groove, so the formed flower is located at different heights on the flower stem, and the shape is lifelike. Attached Figure Description

[0017] The present invention will be further explained and described below with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a top view of the multi-layered upper and lower molds of the present invention; Figure 2 for Figure 1 BB cross-sectional view; Figure 3 for Figure 2 Enlarged view of the H section; Figure 4 This is a three-dimensional view of the fourth core plate from an oblique angle. Figure 5 This is a three-dimensional view of the fourth core plate from a slightly lower angle. Figure 6 This is a sectional view of the first upper and lower molds after they are assembled. Figure 7 yes Figure 6 Enlarged view of part K; Figure 8 It is a three-dimensional image of the flower and its stem; Figure 9 yes Figure 10 AA section view; Figure 10 This is a bottom view of the multi-layered upper mold; Figure 11 This is a top view of the lower mold and the multi-layered upper mold after they are assembled; Figure 12 yes Figure 11 CC section view; Figure 13 This is a bottom view of the lower mold; Figure 14 yes Figure 13 DD sectional view; Figure 15 This is a schematic diagram of an injection molding machine.

[0019] In the diagram: 1-First mold core plate, 10-First hollow pillar, 2-Second mold core plate, 21-Second hollow pillar, 3-Third mold core plate, 31-Third hollow pillar, 4-Fourth mold core plate, 41-Fourth hollow pillar, 42-Upper groove, 5-Side cavity, 51-Side cavity unit, 6-Main cavity, 7-Sprue sleeve, 8-Upper template, 9-Hot runner plate, 91-Through hole runner, 11-Lower mold, 110-Core pulling block, 111-Lower template, 112-Lower groove, 113-Lower forming part, 12-Lower cavity, 13-First upper mold, 131-Upper mold core, 1311-Blind hole, 14-First mold cavity, 16-Flower, 17-Flower stem, 171-Flower holder, 18-Upper mounting plate, 19-Lower mounting plate. Detailed Implementation

[0020] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0021] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0022] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0024] Reference Figures 1 to 15 This is an embodiment of the present invention.

[0025] An injection mold includes a lower mold 11: It also includes a multi-layer upper mold, which includes a third mold core plate 3 and a fourth mold core plate 4. The third mold core plate 3 is provided with a plurality of protruding third hollow pillars 31, and the fourth mold core plate 4 is provided with a plurality of protruding fourth hollow pillars 41. The fourth hollow column 41 is sleeved on the outside of the third hollow column 31, and a side cavity 5 is provided between the third hollow column 31 and the fourth hollow column 41. The side cavity 5 is in the shape of an inverted cone. The lower mold includes a lower template 111 and a plurality of core-pulling blocks 110 slidably connected to the lower template 111, and also includes a lower forming part 113 with an annular protrusion, one of the lower forming parts 113 being distributed on two or more of the core-pulling blocks 110; the core-pulling block 110 is provided with a lower cavity 12, and the top of the lower cavity 12 is connected to the middle of the lower forming part 113; The main cavity 6 is located between the fourth hollow column 41 and the lower forming part 113, and the side cavity 5 is connected to the main cavity 6.

[0026] The special design of the injection mold in this application lies in the fact that a side cavity 5 is provided between the third hollow column 31 and the fourth hollow column 41. The side cavity 5 is inverted conical in shape and can be used to form layered petals. The flower 16 is composed of petals, and the main cavity 6 forms the flower stem 17, the receptacle 171, and the outermost petals. Alternatively, the main cavity 6 can form the flower stem 17 and the receptacle 171 separately. (Refer to...) Figure 4-5 The inner wall of the fourth hollow column 41 serves as the cavity wall for the upper petals, while the outer wall of the fourth hollow column 41 and the lower molding part 113 serve as the cavity wall for the outermost petals. Therefore, the flower stem 17 and the flower 16 can be integrally injection molded, significantly improving molding efficiency compared to manual assembly of the flower stem 17 and the flower 16. Figure 3 Only a portion of the core-pulling block 110 is displayed; not all of the core-pulling blocks 110 are shown.

[0027] Preferably, refer to Figure 4 In a preferred embodiment, each side cavity 5 includes a plurality of spaced-apart polygonal side cavity units 51. One side cavity unit 51 can form a polygonal petal.

[0028] Preferably, the lower forming parts 113 are at the same or different heights, at least one of the core-pulling blocks 110 is provided with a lower groove 112, and at least one of the lower forming parts 113 is disposed in the lower groove 112; the fourth mold core plate 4 is provided with an upper groove 42, and at least part of the fourth hollow column 41 is disposed in the upper groove 42; the different upper grooves 42 have the same or different depths; the different lower grooves 112 have the same or different depths. This allows the flower 16 to be located at different heights on the flower stem 17.

[0029] In a preferred embodiment, the system further includes a first mold core plate 1 and a second mold core plate 2. The first mold core plate 1 has a raised first hollow column 11, and the second mold core plate 2 has a raised second hollow column 21. A third hollow column 31 is sleeved on the outside of the second hollow column 21, and a side cavity 5 is provided between the second hollow column 21 and the third hollow column 31. The second hollow column 21 is sleeved on the outside of the first hollow column 11, and a side cavity 5 is provided between the first hollow column 11 and the second hollow column 21. This system is used to form multi-layered petals.

[0030] Reference Figure 2-3In a preferred embodiment, a sprue sleeve 7 is also included, which extends into the first hollow column 10. A side cavity 5 is also provided between the sprue sleeve 7 and the first hollow column 10. The sprue sleeve 7 is a commonly used part in the field of injection molds. However, the sprue sleeve in the prior art is only used to allow the plastic melt to flow from the mold gate to the mold cavity. In this application, a side cavity 5 is also provided between the sprue sleeve 7 and the first hollow column 10, that is, the sprue sleeve 7 also serves as a cavity for product molding, increasing the number of petal layers of the flower 16 and improving the molding effect of the flower 16.

[0031] Reference Figure 2 In a preferred embodiment, the multi-layer upper mold further includes an upper template 8, on which a hot runner plate 9 is installed. The hot runner plate 9 is provided with a horizontally arranged hot runner channel and a vertically arranged through-hole channel 91. The sprue sleeve 7 is installed on the upper template 8, and the through-hole channel 91 is connected to the sprue sleeve 7.

[0032] In a preferred embodiment, there are multiple through-hole channels 91, sprue sleeves 7, first hollow columns 10, and second hollow columns 21. This is used for simultaneous injection molding of multiple flowers 16.

[0033] This application also provides an injection molding machine, including the aforementioned injection mold, as described above. Figure 15 It also includes a first upper mold 13, an upper mounting plate 18, and a lower mounting plate 19. The upper mounting plate 18 and the upper and lower mounting plates 19 are arranged opposite each other vertically. The lower mounting plate 19 can rotate in the horizontal plane. The lower mounting plate 19 is provided with at least two lower molds 11. The upper mounting plate 18 is provided with the first upper mold 13 and the multi-layer upper mold. The lower mold 11 and the first upper mold 13 cooperate to form a first mold cavity 14. The first upper mold 13 is provided with a plurality of columnar upper mold cores 131. The end face of the upper mold core 131 is provided with a spherical surface. The center of the spherical surface is provided with a blind hole 1311. The first mold cavity 14 includes the blind hole 1311 and the lower cavity 12.

[0034] When the first material is injected in the two-color injection molding process, the lower mold 11 and the first upper mold 13 cooperate to form the flower stem 17, or the flower stem 17 and the flower base 171, in the first mold cavity 14. Then the mold is opened, and the flower stem 17 in the lower mold 11 is not removed. Then the lower mold is transferred to cooperate with the multi-layer upper mold to inject the second material and form the flower 16 at the upper end of the flower stem 17.

[0035] An injection molding method, based on the aforementioned injection molding machine, includes the following steps: Step 1: The lower mold 11 and the first upper mold 13 are joined together to injection mold the flower stem 17; Step 2: The first upper mold 13 opens, the lower mold 11 drives the flower stem 17 and the sprue material on the flower stem 17 to rotate at a certain angle, the multi-layer upper mold moves downward and closes with the lower mold 11, and the flower is injection molded on the flower stem 17 to obtain the injection molded product. Step 3: The multi-layer upper mold moves upward to open, and the lower mold 11 rotates at a certain angle; Step four, the core-pulling block 110 moves and is disconnected from the flower stem detachment 17. The external robot arm moves to the vicinity of the lower mold 11, the robot arm clamps the sprue material, and lifts the injection molded product upward to detach it from the lower mold 11.

[0036] An artificial plant includes a flower 16 and a flower stem 17, wherein the flower 16 comprises at least two layers of petals and is integrally molded using the injection molding method as described in claim 8.

[0037] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct or indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An injection mold, comprising a lower mold (11), characterized in that: It also includes a multi-layer upper mold, which includes a third mold core plate (3) and a fourth mold core plate (4). The third mold core plate (3) is provided with a plurality of protruding third hollow columns (31), and the fourth mold core plate (4) is provided with a plurality of protruding fourth hollow columns (41). The fourth hollow column (41) is sleeved on the outside of the third hollow column (31), and a side cavity (5) is provided between the third hollow column (31) and the fourth hollow column (41). The side cavity (5) is in the shape of an inverted cone. The lower mold includes a lower template (111) and a plurality of core-pulling blocks (110) slidably connected to the lower template (111), and also includes a lower forming part (113) with an annular protrusion, one of the lower forming parts (113) being distributed on two or more of the core-pulling blocks (110); the core-pulling block (110) is provided with a lower cavity (12), and the top of the lower cavity (12) is connected to the middle part of the lower forming part (113); The main cavity (6) is between the fourth hollow column (41) and the lower forming part (113), and the side cavity (5) is connected to the main cavity (6).

2. The injection mold as described in claim 1, characterized in that: Each side cavity (5) includes multiple spaced-apart polygonal side cavity units (51).

3. The injection mold as described in claim 1, characterized in that: Different lower forming parts (113) are at the same or different heights, at least one of the core-pulling blocks (110) is provided with a lower groove (112), and at least one of the lower forming parts (113) is provided in the lower groove (112); The fourth core plate (4) is provided with an upper groove (42), and at least part of the fourth hollow column (41) is provided in the upper groove (42); The different upper grooves (42) have the same or different depths; the different lower grooves (112) have the same or different depths.

4. The injection mold as described in claim 1, characterized in that: It also includes a first mold core plate (1) and a second mold core plate (2). The first mold core plate (1) is provided with a first hollow column (11) with a protrusion, and the second mold core plate (2) is provided with a second hollow column (21) with a protrusion. The third hollow column (31) is sleeved on the outside of the second hollow column (21), and a side cavity (5) is provided between the second hollow column (21) and the third hollow column (31). The second hollow column (21) is sleeved on the outside of the first hollow column (11), and a side cavity (5) is provided between the first hollow column (11) and the second hollow column (21).

5. The injection mold as described in claim 4, characterized in that: It also includes a sprue sleeve (7), which extends into the first hollow column (10), and a side cavity (5) is also provided between the sprue sleeve (7) and the first hollow column (10).

6. The injection mold as described in claim 5, characterized in that: The multi-layer upper mold also includes an upper template (8), on which a hot runner plate (9) is installed. The hot runner plate (9) is provided with a horizontally arranged hot runner channel and a vertically arranged through hole channel (91). The sprue sleeve (7) is installed on the upper template (8), and the through hole channel (91) is connected to the sprue sleeve (7).

7. An injection molding machine, comprising an injection mold as described in claim 1, characterized in that: It also includes a first upper mold (13), an upper mounting plate (18), and a lower mounting plate (19). The upper mounting plate (18) and the upper and lower mounting plates (19) are arranged opposite each other vertically, and the lower mounting plate (19) can rotate in the horizontal plane. The lower mounting plate (19) is provided with at least two lower molds (11), and the upper mounting plate (18) is provided with the first upper mold (13) and the multi-layer upper mold. The lower mold (11) and the first upper mold (13) are combined to form a first mold cavity (14). The first upper mold (13) is provided with a plurality of columnar upper mold cores (131), the end face of the upper mold core (131) is provided with a spherical surface, the center of the spherical surface is provided with a blind hole (1311), and the first mold cavity (14) includes the blind hole (1311) and the lower mold cavity (12).

8. An injection molding method, based on the injection molding machine of claim 7, characterized in that, Includes the following steps: Step 1: The lower mold (11) and the first upper mold (13) are joined together to injection mold the flower stem (17). Step 2: The first upper mold (13) opens, and the lower mold (11) drives the flower stem (17) and the sprue on the flower stem (17) to rotate at a certain angle. The multi-layer upper mold moves downward and closes with the lower mold (11). The flower is injected onto the flower stem (17) to obtain the injection molded product. Step 3: The multi-layer upper mold moves upward to open, and the lower mold (11) rotates at a certain angle; Step four, the core-pulling block (110) moves, the core-pulling block (110) is disconnected from the flower stem (17), the external robot moves to the vicinity of the lower mold (11), the robot grips the sprue material, and lifts the injection molded product upward to separate it from the lower mold (11).

9. A simulated plant, characterized in that, It includes a flower (16) and a flower stem (17), wherein the flower (16) comprises at least two layers of petals and is integrally molded using the injection molding method as described in claim 8.

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