Mould

Abstract

The present invention provides a mold for forming a hose and a cover in one piece, which includes a movable mold assembly and a fixed mold assembly. The movable mold assembly and the fixed mold assembly form a cavity when the mold is closed. The cavity has two sub-cavities, which are connected by a thin flow channel. The second sub-cavity is used to form the cover, and the first sub-cavity and the thin flow channel are used to form a connecting portion that connects the cover and the hose as one piece. The movable mold assembly is provided with a liquid flow channel for molten material to flow into the two sub-cavities, and a pin assembly extending into the second sub-cavity for forming an inner column in the cover. The fixed mold assembly is provided with a cooling pipeline and a core rod extending into the first sub-cavity for inserting the hose. The core rod is provided with a cooling channel, and the cooling pipeline and the cooling channel are connected. The mold of the present invention directly produces the cover on the basis of the hose, so that the hose and the cover are directly connected as one piece without bolts, which improves production efficiency and saves production costs. In addition, the materials of the two are consistent, which is convenient for recycling.

Description

Technical Field

[0001] The invention relates to the technical field of hose production, in particular to a mold for integrally molding a hose and a cover. Background Art

[0002] The current cosmetic packaging tube is composed of a PE hose 201 and a PP cap 202. Figure 1 , the PE hose 201 and the PP cap 202 are connected by threads. Since the two are made of different materials, they need to be subdivided during terminal recycling. That is, the PP cap 202 needs to be separated from the PE hose 201. An additional recycling process will increase the cost and is not conducive to complete recycling. Moreover, the current conventional cosmetic packaging tubes require multiple processes in the product manufacturing process, that is, the PP cap 202 and the PE hose 201 are produced separately, and matching threads need to be formed on them. Therefore, multiple sets of molds are required during production, and the front-end energy consumption occupies a large proportion.

[0003] Therefore, a mold is needed to facilitate the production of a hose and a cover for integrally forming the hose, so that the produced product can be easily recycled. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a mold for integrally forming a hose and a cover, so as to solve the problem that the production process of the hose and the cover in the prior art is complicated and difficult to recycle.

[0005] In order to solve the above technical problems, the present invention provides a mold for integrally molding a hose and a cap, comprising a movable mold assembly and a fixed mold assembly, wherein the movable mold assembly and the fixed mold assembly form a cavity when the mold is closed, wherein the cavity has two sub-cavities, the two sub-cavities are connected by a thin flow channel, the second sub-cavity is used to form the cap, and the first sub-cavity and the thin flow channel are used to form a connecting portion in which the cap and the hose are integrally connected;

[0006] The movable mold assembly is provided with a material flow channel for the molten material to flow into the two sub-cavities, and a pin assembly extending into the second sub-cavity for forming an inner column in the cover;

[0007] The fixed mold assembly is provided with a cooling pipeline and a core rod extending into the first sub-cavity and inserted with a hose, a cooling channel is provided in the core rod, and the cooling pipeline is connected to the cooling channel.

[0008] Preferably, a positioning sleeve for positioning the hose is provided on the core rod.

[0009] Preferably, the movable mold assembly is provided with an insert for constituting part of the cavity wall of the second sub-cavity, a cooling pipeline is provided in the insert, and the outer diameter of the insert matches the inner diameter of the cover; the pin assembly is arranged in the insert.

[0010] Preferably, the needle inserting assembly comprises a needle inserting sleeve rod and a needle inserted in the needle inserting sleeve rod, and on the second sub-cavity side, there is a gap between the needle inserting sleeve rod to form an inner column in the cover, and the gap is communicated with the second sub-cavity.

[0011] Preferably, a top column is further provided between the insert pin assembly and the insert block, and the bottom of the top column constitutes a part of the cavity wall of the second sub-cavity.

[0012] Preferably, the movable mold assembly is provided with a locking wedge block, and the fixed mold assembly is provided with a fixed mold slider, the fixed mold slider cooperates with the wedge surface of the locking wedge block to slide under the drive of the locking wedge block, and the two cavities are respectively surrounded by the fixed mold slider and the movable mold assembly.

[0013] Preferably, the movable mold assembly is provided with a protruding column extending into the first sub-cavity, and the protruding column has an ejector pin portion inserted into the hose inserted on the core rod.

[0014] Preferably, the mold has a plurality of cavities.

[0015] Preferably, the movable mold assembly includes a panel, a runner plate and a movable mold plate which are stacked in sequence and connected to each other, the movable mold plate is located on a side close to the fixed mold assembly, the panel is provided with a feed port, the runner plate and the movable mold plate have interconnected channels for the molten material to flow through, the channels are connected to the feed port, and the runner plate is also provided with a pulling needle for extending into the channel.

[0016] Preferably, the fixed mold assembly further includes an airflow pipeline, an airflow channel is provided in the core rod, the airflow pipeline is connected to the airflow channel, and the core rod has an airflow outlet communicating with the airflow channel.

[0017] Preferably, the air flow jet port is located at the top of the core rod, and the air flow jet port is inclined relative to the axis of the core rod.

[0018] As described above, the mold of the present invention has the following beneficial effects: a core rod is extended into a cavity, a hose is sleeved on the core rod, and then the molds are closed to introduce molten material into the two cavities. Since the two cavities are connected, the molten material is filled in the two cavities and the thin flow channel, thereby forming a cover and a connecting portion that connects the cover and the hose into one. The mold of the present invention produces the cover directly on the basis of the hose, so that the hose and the cover are directly connected as one without the need for bolts, thereby improving production efficiency and saving production costs. In addition, the materials of the two are made consistent for easy recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shown is a schematic diagram of a cosmetic packaging tube in the prior art.

[0020] Figure 2Shown is a side schematic view of a mold of the present invention.

[0021] Figure 3 Shown is a top perspective view of a mold of the present invention.

[0022] Figure 4 Display as Figure 3 AA line section view.

[0023] Figure 5 Display as Figure 3 BB line cross-sectional view.

[0024] Figure 6 Shown is the cover and hose molding state diagram.

[0025] Figure 7 Shown is a schematic diagram of the production and use of the cap and hose.

[0026] Component number description

[0027] 1 Panel

[0028] 2. Flow channel plate

[0029] 3 Dynamic Templates

[0030] 4 Fixed template

[0031] 5 Support columns

[0032] 6 Support plate

[0033] 7 Bottom Plate

[0034] 8 Feed port

[0035] 9 Pin

[0036] 10 Needle sleeve rod

[0037] 11. Column

[0038] 111 Ejector

[0039] 12 Top column

[0040] 13 Inlay

[0041] 14 Mother mold

[0042] 15a, 15b clamping wedge

[0043] 16a, 16b Fixed die slide

[0044] 17 Hose

[0045] 18 Positioning sleeve

[0046] 19 Mandrel

[0047] 191 Airflow Channel

[0048] 192 Cooling channels

[0049] 20, 21 Sealing ring

[0050] 22 Cover

[0051] 23 Air flow line

[0052] 24 Cooling lines

[0053] 25 Pulling needle

[0054] 26 Guide block

[0055] 27 Rack

[0056] 28 Glue feeding rod

[0057] 101 First sub-chamber

[0058] 102 Second sub-chamber

[0059] 201 PE hose

[0060] 202 PP cover DETAILED DESCRIPTION

[0061] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0062] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0063] like Figures 2 to 6 As shown, this embodiment provides a mold for integrally molding a hose 17 and a cover 22, which includes a movable mold assembly and a fixed mold assembly. The movable mold assembly and the fixed mold assembly form a cavity when the mold is closed. The cavity has two sub-cavities, and the two sub-cavities are connected by a thin flow channel. The second sub-cavity 102 is used to form the cover, and the first sub-cavity 101 and the thin flow channel are used to form a connecting portion that integrates the cover 22 and the hose 17.

[0064] The movable mold assembly is provided with a material flow channel for the molten material to flow into the two sub-cavities, and a pin assembly extending into the second sub-cavity 102 for forming an inner column in the cover 22;

[0065] The fixed mold assembly is provided with a cooling pipeline 24 and a core rod 19 extending into the first sub-cavity 101 and used to insert the hose 17. A cooling channel 192 is provided in the core rod 19, and the cooling pipeline 24 is connected to the cooling channel 192.

[0066] In this embodiment, two connected cavities are arranged in the mold, one of which is provided with a core rod 19. Figure 7 As shown, the tube body of the hose 17 is inserted on the core rod 19, the mold is closed, and molten material is introduced into the two cavities. The molten material forms a cover 22 in the second sub-cavity 102 and is molded on the tube body of the hose 17 in the first sub-cavity 101, so that the hose 17 and the cover 22 are formed as an integral whole. In addition, since the two cavities are connected, the hose 17 and the cover 22 are connected as a whole, and the formed cover 22 can be turned relative to the tube body to achieve closing.

[0067] An embodiment of the mold is described in detail below.

[0068] See Figure 2 As shown, the mold of this embodiment includes a frame 27, and a movable mold assembly and a fixed mold assembly placed on the frame 27. Figure 3 and Figure 5 As shown, in this embodiment, the movable mold assembly includes a panel 1, a runner plate 2 and a movable mold plate 3 which are stacked in sequence and connected to each other. The movable mold plate 3 is located on a side close to the fixed mold assembly. The panel 1 is provided with a feed port 8. The runner plate 2 and the movable mold plate 3 have interconnected channels for the molten material to flow through, and the channels are connected to the feed port 8. In this embodiment, when the mold is closed, the panel 1, the runner plate 2 and the movable mold plate 3 move toward the fixed mold assembly together to complete the mold closing; when the mold is separated, the movable mold plate 3 is separated from the runner plate 2 first, and then the runner plate 2 is separated from the panel 1. Finally, the panel 1, the runner plate 2 and the movable mold plate 3 are separated from the fixed mold assembly together to complete the mold opening.

[0069] See Figure 4 As shown, in this embodiment, the flow channel plate 2 is provided with a feeding rod 28 extending to the two sub-cavities respectively, so as to transport the molten material into the two sub-cavities. In order to empty the molten material in the feeding rod, this embodiment is also provided with a pulling needle 25 adjacent to the flow channel plate. When the mold is opened, the pulling needle 25 can be extended into the feeding rod 28 to complete the cleaning of the residual material.

[0070] To better form the above cover, see Figure 2 and Figure 5As shown, in this embodiment, a mother mold core 14 is provided on the movable template 3 corresponding to the second sub-cavity 102, an insert 13 is provided in the mother mold core 14, a cooling pipeline is provided in the insert 13, the end of the insert 13 protrudes from the bottom surface of the mother mold core 14 to form a part of the cavity wall of the second sub-cavity, the outer diameter of the insert 13 matches the inner diameter of the cover 22, the setting of the insert 13 forms the inner wall surface of the cover, and the setting of the cooling pipeline facilitates rapid molding.

[0071] In order to prevent the molten material from sticking to the insert 13 and making it difficult to demold, a top column 12 is further provided between the insert needle assembly and the insert 13 in this embodiment, and the bottom of the top column 12 constitutes part of the cavity wall of the second sub-cavity, and its top is arranged on the inner wall of the molded cover to facilitate demolding.

[0072] In this embodiment, the needle assembly includes a needle sleeve rod 10 and a needle 9 placed in the needle sleeve rod 10. Figure 5 As shown, there is a gap between the needle 9 and the needle sleeve rod 10 to form an inner column in the cover 22, and the gap is communicated with the second sub-cavity 102.

[0073] At the first sub-cavity 101, see Figure 5 As shown, in this embodiment, the movable mold assembly is provided with a protruding column 11 extending into the first sub-cavity 101, and the protruding column 11 has a pin portion 111 inserted into the hose 17 inserted on the core rod 19. The pin portion 111 forms an opening at the connection portion between the cover and the hose 17, which is convenient for the use of cosmetics or other fluid items in the hose; the opening corresponds to the inner column in the cover, and the inner column can seal the cover opening when the cover is closed. More preferably, the size and shape of the gap between the above-mentioned needle 9 and the needle sleeve rod 10 are consistent with the size and shape of the pin portion 111 on the protruding column 11, ensuring the sealing when the cover is closed.

[0074] In this embodiment, the needle assembly is connected to the panel 1, the top column 12 is connected to the flow channel plate 2, and the needle 9, the needle sleeve rod 10, the top column 12 and the insert 13 are sequentially sleeved from the inside to the outside.

[0075] In order to improve the mold closing accuracy, in this embodiment, the movable mold assembly is provided with a locking wedge block 15a, 15b corresponding to each cavity, and the fixed mold assembly is provided with a fixed mold slider 16a, 16b. At each cavity, the fixed mold slider 16a, 16b cooperates with the wedge surface of the locking wedge block 15a, 15b to slide under the drive of the locking wedge block 15a, 15b, and the two cavities are respectively surrounded by the fixed mold slider 16a, 16b and the female mold core 14 on the movable mold plate 3. During the mold closing process, the panel 1, the runner plate 2, and the movable mold plate 3 are molded together, and the locking wedge blocks 15a, 15b drive the fixed mold slider 16a, 16b to slide until the mold is completely closed; when opening the mold, the locking wedge blocks 15a, 15b drive the fixed mold slider 16a, 16b to slide, which is convenient for demolding at the undercut position on the product (i.e., the cover, the connection between the cover and the hose).

[0076] Specifically, in this embodiment, the fixed mold assembly includes a fixed mold plate 4 in contact with the movable mold plate 3 , the fixed mold sliders 16 a and 16 b are both slidably disposed in the fixed mold plate, and the fixed mold plate 4 is supported on the support columns 5 .

[0077] In this embodiment, in order to facilitate the positioning of the core rod 19, the fixed mold assembly further includes a bottom plate 7 and a support plate 6, the support column 5 is supported on the bottom plate 7, the support plate 6 is located above the bottom plate 7, and the core rod 19 is clamped in the support plate 6. In order to facilitate the arrangement of the cooling pipeline 24, the cooling pipeline 24 in this embodiment is composed of a hole on the bottom plate 7, and a sealing ring 21 is provided at the connection between the cooling pipeline 24 and the core rod 19.

[0078] To facilitate demoulding, the fixed mold assembly of this embodiment further includes an airflow pipeline 23, an airflow channel 191 is provided in the core rod 19, the airflow pipeline 191 is connected to the airflow channel 23, and the core rod 19 has an airflow outlet communicated with the airflow channel 191. During demoulding, gas can be introduced into the core rod through the airflow pipeline 23, and the gas is ejected from the airflow outlet to float the above-mentioned hose, thereby realizing demoulding. A sealing ring 20 is provided at the connection between the airflow pipeline 191 and the airflow channel 23. In this embodiment, the airflow pipeline 23 is composed of the channel on the above-mentioned bottom plate 7.

[0079] In order to increase the air flow ejection speed and facilitate demoulding, in this embodiment, the air flow ejection port is located at the top of the core rod 19, and the air flow ejection port is inclined relative to the axis of the core rod 19.

[0080] In order to realize the separation of the hose from the core rod, it is not limited to separation by gas blowing, and it can also be achieved by other mechanical structures, such as a liftable ejection mechanism.

[0081] In order to facilitate the insertion of the tube body of the hose 17 on the above-mentioned mandrel 19, and to adapt to hoses of different lengths, and to ensure that each hose fits with the top of the mandrel, see Figure 5 , Figure 6 As shown, in this embodiment, a positioning sleeve 18 for positioning the hose 17 is provided on the mandrel 19 , and the height of the hose 17 is positioned by the positioning sleeve 18 .

[0082] In order to improve production efficiency, the mold of this embodiment has multiple cavities as described above. Figure 3 As shown, each cavity is provided with the second sub-cavity 102 and the first sub-cavity 101, that is, the mold of this embodiment can produce multiple hoses with covers at one time. The internal structures of the movable mold assembly and the fixed mold assembly corresponding to each molding area are the same.

[0083] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0084] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A mold for integrally molding a hose and a cover, characterized in that: The invention comprises a movable mold assembly and a fixed mold assembly, wherein the movable mold assembly and the fixed mold assembly form a mold cavity when the mold is closed, wherein the mold cavity has two sub-cavities, the two sub-cavities are connected through a thin flow channel, the second sub-cavity is used to form a cover, and the first sub-cavity and the thin flow channel are used to form a connecting portion in which the cover and the hose are integrated; The movable mold assembly is provided with a material flow channel for the molten material to flow into the two sub-cavities, and a pin assembly extending into the second sub-cavity for forming an inner column in the cover; the movable mold assembly is provided with an insert for forming a part of the cavity wall of the second sub-cavity, the insert is provided with a cooling pipeline, and the outer diameter of the insert matches the inner diameter of the cover; the pin assembly is arranged in the insert; the pin assembly includes a pin sleeve rod and a pin arranged in the pin sleeve rod, and on the second sub-cavity side, there is a gap between the pin and the pin sleeve rod for forming the inner column in the cover, and the gap is communicated with the second sub-cavity; The fixed mold assembly is provided with a cooling pipeline and a core rod extending into the first sub-cavity and inserted with a hose, the core rod is provided with a cooling channel, and the cooling pipeline is connected to the cooling channel; the fixed mold assembly also includes an airflow pipeline, the core rod is provided with an airflow channel, the airflow pipeline is connected to the airflow channel, and the core rod is provided with an airflow nozzle communicating with the airflow channel; the airflow nozzle is located at the top of the core rod, and the airflow nozzle is inclined relative to the axis of the core rod.

2. The mold according to claim 1, characterized in that: The core rod is provided with a positioning sleeve for positioning the hose.

3. The mold according to claim 1, characterized in that: A top column is also provided between the insert needle assembly and the insert block, and the bottom of the top column constitutes a part of the cavity wall of the second sub-cavity.

4. The mold according to claim 1, characterized in that: The movable mold assembly is provided with a locking wedge block, and the fixed mold assembly is provided with a fixed mold slider. The fixed mold slider cooperates with the wedge surface of the locking wedge block to slide under the drive of the locking wedge block. The two cavities are respectively surrounded by the fixed mold slider and the movable mold assembly.

5. The mold according to claim 1, characterized in that: The movable mold assembly is provided with a protruding column extending into the first sub-cavity, and the protruding column has an ejector pin portion inserted into the hose inserted on the core rod.

6. The mold according to claim 1, characterized in that: The mold has a plurality of cavities.

7. The mold according to claim 1, characterized in that: The movable mold assembly includes a panel, a runner plate and a movable mold plate which are stacked in sequence and connected to each other. The movable mold plate is located on a side close to the fixed mold assembly. The panel is provided with a feed port. The runner plate and the movable mold plate have interconnected channels for molten material to flow through. The channels are connected to the feed port. The runner plate is also provided with a pulling needle for extending into the channel.

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