Children bathtub rubber coating injection mold

Abstract

The utility model belongs to the technical field of molds, and particularly relates to a rubber coating injection mold for a child bathtub. The bathtub forming mold comprises a bathtub forming lower mold and a bathtub forming upper mold, a forming convex part is arranged on the bathtub forming lower mold, a forming concave part is arranged in the bathtub forming upper mold, the forming convex part and the forming concave part correspond to each other in position and are matched with each other in shape, an injection molding main board is arranged above the bathtub forming upper mold, and the injection molding main board is connected with the bathtub forming lower mold. And an inclined needle valve pouring assembly is arranged between the injection molding main plate and the bathtub forming upper mold and corresponds to the forming convex part in position. According to the utility model, the inclined needle valve pouring component is arranged, and particularly the inclined needle valve pouring pipe is obliquely arranged, so that a mold cavity can be more uniformly filled with plastic melt, the forming defects are reduced, and the product quality is improved. Compared with a traditional straight pouring mode, inclined needle valve pouring can better control the flowing direction and speed of the melt, and the problems of material shortage, obvious weld marks and the like are avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mould technical field relates to a child bath basin rubber coating injection mold. BACKGROUND

[0002] In the production process of children's bath basin, injection mold plays a vital role. The traditional injection mold of children's bath basin has some deficiencies in design and use. For example, the feeding mode is not reasonable enough, which leads to uneven flow of plastic melt in the mold cavity, and easily causes the bath basin product to have forming defects, such as material shortage, obvious weld marks and other problems, affecting the quality and appearance of the product. Moreover, the structure design of the mold is not optimized, which makes the manufacturing and maintenance cost of the mold higher and the production efficiency lower. Therefore, a child bath basin rubber coating injection mold is needed to solve the above problems.

[0003] In order to overcome the deficiencies of the prior art, people have explored various solutions, such as a folding bath basin injection mold [application number: 202320423220.X] disclosed by Chinese patent, which includes a bath basin forming lower mold and a bath basin forming upper mold. The bath basin forming upper mold is provided with an injection part above, and the bath basin forming lower mold is provided with a detachable auxiliary forming protrusion assembly inside. However, in the injection process, the straight-through injection feeding method is still used, which still easily leads to uneven flow of plastic melt in the mold cavity, and easily causes the bath basin product to have forming defects, such as material shortage, obvious weld marks and other problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at the above problems, and provides a child bath basin rubber coating injection mold.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A child bath basin rubber coating injection mold, which includes a bath basin forming lower mold and a bath basin forming upper mold, the bath basin forming lower mold is provided with a forming convex part, the bath basin forming upper mold is provided with a forming concave part inside, the position of the forming convex part corresponds to that of the forming concave part and the shape of the forming convex part matches that of the forming concave part, the bath basin forming upper mold is provided with an injection main plate above, the injection main plate is provided with a inclined needle valve feeding assembly between the bath basin forming upper mold, and the position of the inclined needle valve feeding assembly corresponds to that of the forming convex part.

[0007] In the above child bath basin rubber coating injection mold, the inclined needle valve feeding assembly includes a shunt injection plate arranged between the injection main plate and the bath basin forming upper mold, the shunt injection plate is provided with inclined needle valve feeding pipes below both ends, and the position of the inclined needle valve feeding pipes corresponds to that of the forming convex part.

[0008] The injection connecting piece is connected with the inclined needle valve runner at one end and connected with the shunt injection plate at the other end.

[0009] The injection connecting piece comprises two obliquely arranged material connecting blocks arranged between the inclined needle valve runner and the shunt injection plate.

[0010] The obliquely arranged material connecting blocks are corresponded in position and matched in shape with the letting-in fixed notch.

[0011] The inclined needle valve runner is arranged obliquely.

[0012] The injection main plate is provided with an injection main hole connected with the shunt injection plate.

[0013] The forming convex part comprises a forming protrusion arranged on the bathtub forming lower die.

[0014] The forming concave part comprises an injection concave cavity arranged in the bathtub forming upper die, and the injection concave cavity is corresponded in position and matched in shape with the forming protrusion.

[0015] The injection concave cavity is provided with a plurality of bathtub supporting leg forming grooves.

[0016] Compared with the prior art, the injection connecting piece is connected with the inclined needle valve runner at one end and connected with the shunt injection plate at the other end.

[0017] 1、The obliquely arranged material connecting blocks are corresponded in position and matched in shape with the letting-in fixed notch.

[0018] 2、The obliquely arranged material connecting blocks are corresponded in position and matched in shape with the letting-in fixed notch.

[0019] Other advantages, objects, and features of the present application will become apparent from the following specification. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic diagram of the present application.

[0021] Figure 2 is a partial structural schematic diagram of the present application.

[0022] Figure 3 is a structural schematic diagram of the inclined needle valve pouring assembly.

[0023] Figure 4 is a structural schematic diagram of the bathtub forming upper mold.

[0024] In the figure: bathtub forming lower mold 1, bathtub forming upper mold 2, forming convex part 3, forming concave part 4, injection main plate 5, inclined needle valve pouring assembly 6, shunt injection plate 7, inclined needle valve pouring pipe 8, injection connecting piece 9, inclined material connecting block 10, let go of fixed gap 11, injection main hole 12, forming convex 13, injection concave cavity 14, bathtub support foot forming groove 15. DETAILED DESCRIPTION

[0025] The present application will be further described below in conjunction with the drawings.

[0026] As Figures 1-4 shown, a child bathtub rubber-coated injection mold, comprising a bathtub forming lower mold 1 and a bathtub forming upper mold 2, the bathtub forming lower mold 1 is provided with a forming convex part 3, the bathtub forming upper mold 2 is provided with a forming concave part 4, the forming convex part 3 and the forming concave part 4 correspond in position and match in shape, the bathtub forming upper mold 2 is provided with an injection main plate 5 above, the injection main plate 5 and the bathtub forming upper mold 2 are provided with an inclined needle valve pouring assembly 6, the inclined needle valve pouring assembly 6 corresponds in position with the forming convex part 3.

[0027] In this embodiment, during the injection molding process, the bathtub forming lower mold 1 and the bathtub forming upper mold 2 are clamped, at this time the forming convex part 3 is embedded in the forming concave part 4, and the two are tightly matched, together forming a forming cavity of the child bathtub, the injection main plate 5 is located above the bathtub forming upper mold 2, providing a channel for the injection of material, the inclined needle valve pouring assembly 6 is connected between the injection main plate 5 and the bathtub forming upper mold 2, and its position corresponds to the forming convex part 3, ensuring that the injection material can accurately enter the forming cavity, the structural design of the mold enables the mold to accurately form the shape of the child bathtub, ensuring the dimensional accuracy and appearance quality of the product, the design of the inclined needle valve pouring assembly 6 corresponding to the forming convex part 3 optimizes the pouring position, which is beneficial to the uniform distribution of plastic melt in the cavity and reduces the forming defects.

[0028] In combination Figures 1-4 As shown, the inclined needle valve gating assembly 6 comprises a shunt injection plate 7 arranged between the injection main plate 5 and the bathtub forming upper mold 2, and the shunt injection plate 7 is provided with inclined needle valve gating pipes 8 at the lower ends of both ends, which correspond to the positions of the forming convex parts 3.

[0029] Specifically, the injection main plate 5 delivers the injection material to the shunt injection plate 7, which plays a role in preliminary shunting of the material, and the inclined needle valve gating pipes 8 at the lower ends of both ends of the shunt injection plate 7 further guide the material to the mold cavity, and the positions of the inclined needle valve gating pipes 8 correspond to the forming convex parts 3, so that the material can directly enter the forming area composed of the forming convex parts 3 and the forming concave parts 4. The arrangement of the shunt injection plate 7 makes the material evenly distributed before entering the inclined needle valve gating pipes 8, ensuring the consistency of the material output of each inclined needle valve gating pipe 8. The inclined needle valve gating pipes 8 correspond to the forming convex parts 3, which can more accurately control the gating position and make the plastic melt fill the cavity more uniformly, improve the product forming quality, and reduce defects such as bubbles and shrink marks caused by uneven gating.

[0030] The injection connecting piece 9 is connected to the inclined needle valve gating pipe 8 at one end and connected to the shunt injection plate 7 at the other end, and the injection connecting piece 9 comprises two obliquely arranged material connecting blocks 10 arranged between the inclined needle valve gating pipe 8 and the shunt injection plate 7, and the obliquely arranged material connecting blocks 10 have material conveying channels inside, which are connected to the inclined needle valve gating pipe 8 at one end and connected to the shunt injection plate 7 at the other end.

[0031] In this embodiment, the two obliquely arranged material connecting blocks 10 are respectively located between the inclined needle valve gating pipe 8 and the shunt injection plate 7, and the material conveying channels inside them are connected to the shunt injection plate 7 and the inclined needle valve gating pipe 8 in sequence, forming a continuous material conveying path.

[0032] The bathtub forming upper mold 2 is provided with a let-in fixed notch 11, and the obliquely arranged material connecting blocks 10 correspond to the positions of the let-in fixed notches 11 and are matched in shape.

[0033] In this embodiment, during mold assembly, the obliquely arranged material connecting blocks 10 are embedded in the let-in fixed notches 11 in the bathtub forming upper mold 2, and the two are tightly matched to realize the positioning and fixing of the obliquely arranged material connecting blocks 10 on the bathtub forming upper mold 2.

[0034] In combination Figures 2-3 As shown in the figure, the inclined needle valve runner 8 is arranged obliquely.

[0035] In this embodiment, the inclination angle of the inclined needle valve runner 8 is matched with the structure of the mold cavity and the flow requirement of the plastic melt, so that the material can enter the cavity at a specific angle and speed.

[0036] The injection molding main plate 5 has an injection molding main hole 12 connected with the shunt injection plate 7.

[0037] In this embodiment, the injection molding equipment injects the molten plastic material into the injection molding main plate 5 through the injection molding main hole 12, which is connected with the shunt injection plate 7, so that the material can flow smoothly into the shunt injection plate 7 for subsequent shunting and conveying.

[0038] In combination Figures 1-4 As shown in the figure, the forming convex part 3 includes a forming protrusion 13 arranged on the bathtub forming lower mold 1, and the forming concave part 4 includes an injection molding cavity 14 arranged in the bathtub forming upper mold 2, which corresponds in position and is matched in shape with the forming protrusion 13.

[0039] In this embodiment, the injection molding cavity 14 is located in the bathtub forming upper mold 2, which corresponds in position and is matched in shape with the forming protrusion 13 on the bathtub forming lower mold 1. In the clamped state, the forming protrusion 13 is embedded in the injection molding cavity 14, and the space between them forms a forming cavity of the child bathtub.

[0040] In combination Figure 4 As shown in the figure, the injection molding cavity 14 has a plurality of bathtub support leg forming grooves 15.

[0041] In this embodiment, the bathtub support leg forming grooves 15 are arranged in the injection molding cavity 14, and during the injection molding process, the plastic melt fills the forming grooves, thereby forming the support legs of the bathtub. The design of the bathtub support leg forming grooves 15 enables the bathtub support legs to be molded at one time during the injection molding process, ensuring the dimensional accuracy of the support legs and the connection strength with the bathtub body, improving the production efficiency, and also ensuring the stability of the bathtub during use.

[0042] The working principle of the utility model is:

[0043] In actual production, first, the bathtub forming lower mold 1 and the bathtub forming upper mold 2 are installed on the injection molding machine to ensure that their positions are accurate and fixed firmly, then the molten plastic material is injected into the injection molding main hole 12 of the injection molding main plate 5 through the injection molding equipment,

[0044] After the material enters the main injection hole 12, it flows into the distribution injection plate 7. The distribution injection plate 7 initially distributes the material, and then the material is transported into the mold cavity through the inclined needle valve inlet pipe 8. Because the inclined needle valve inlet pipe 8 is inclined, the material enters the cavity at a specific angle and speed, which allows the plastic melt to be distributed more evenly in the cavity, effectively avoiding molding defects that may be caused by traditional injection methods.

[0045] The inclined material connecting block 10 plays a crucial role in connecting the inclined needle valve inlet pipe 8 and the flow divider injection plate 7 throughout the process. Its internal material conveying channel ensures smooth material flow. At the same time, the inclined material connecting block 10 is compatible with the clearance fixing notch 11 in the bathtub molding upper mold 2, which not only ensures its own stability but also facilitates the assembly and disassembly of the mold.

[0046] During the molding process, the molding protrusion 3 and the molding concave part 4 cooperate with each other. The molding protrusion 13 on the lower mold 1 of the bathtub and the injection cavity 14 in the upper mold 2 of the bathtub work together to form the main shape of the children's bathtub. The bathtub support foot molding groove 15 in the injection cavity 14 is used to form the support foot of the bathtub, ensuring the practicality and stability of the bathtub.

[0047] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model.

[0048] Although this document frequently uses terms such as bathtub molding lower mold 1, bathtub molding upper mold 2, molding protrusion 3, molding recess 4, injection main board 5, oblique needle valve inlet assembly 6, flow divider injection plate 7, oblique needle valve inlet pipe 8, injection connector 9, oblique material connecting block 10, clearance fixing notch 11, injection main hole 12, molding protrusion 13, injection cavity 14, bathtub support foot molding groove 15, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A child bath tub overmolding injection mold comprising a bath tub forming lower mold (1) and a bath tub forming upper mold (2), characterized in that, The bathtub forming lower die (1) is provided with a forming protrusion (3), the bathtub forming upper die (2) is provided with a forming recess (4), the forming protrusion (3) and the forming recess (4) correspond in position and match in shape, the bathtub forming upper die (2) is provided with an injection main plate (5) above, the injection main plate (5) and the bathtub forming upper die (2) are provided with a inclined needle valve pouring assembly (6) between, and the inclined needle valve pouring assembly (6) corresponds to the position of the forming protrusion (3).

2. The child tub overmold injection mold of claim 1, wherein, The inclined needle valve pouring assembly (6) comprises a shunt injection plate (7) arranged between the injection main plate (5) and the bathtub forming upper die (2), and the shunt injection plate (7) is provided with a inclined needle valve pouring pipe (8) below at both ends, and the inclined needle valve pouring pipe (8) corresponds to the position of the forming protrusion (3).

3. The child tub overmold injection mold of claim 2, wherein, The inclined needle valve pouring pipe (8) and the shunt injection plate (7) are provided with an injection connecting piece (9), one end of the injection connecting piece (9) is connected with the inclined needle valve pouring pipe (8), and the other end is connected with the shunt injection plate (7).

4. The child tub overmold injection mold of claim 3, wherein, The injection connecting piece (9) comprises two obliquely arranged material connecting blocks (10) arranged between the inclined needle valve pouring pipe (8) and the shunt injection plate (7), the obliquely arranged material connecting block (10) has a material conveying channel therein, one end of the material conveying channel is connected with the inclined needle valve pouring pipe (8), and the other end is connected with the shunt injection plate (7).

5. The child tub overmold injection mold of claim 4, wherein, The bathtub forming upper die (2) is provided with a let-out fixed notch (11), and the obliquely arranged material connecting block (10) corresponds to the position of the let-out fixed notch (11) and matches in shape.

6. The child bath tub package injection mold of claim 5, wherein, The inclined needle valve pouring pipe (8) is arranged obliquely.

7. The child bath tub package injection mold of claim 6, wherein, The injection main plate (5) has an injection main hole (12) therein, and the injection main hole (12) is connected with the shunt injection plate (7).

8. The child tub overmold injection mold of claim 7, wherein, The forming protrusion (3) comprises a forming protrusion (13) arranged on the bathtub forming lower die (1).

9. The child tub overmold injection mold of claim 8, wherein, The forming recess (4) comprises an injection recess (14) arranged in the bathtub forming upper die (2), and the injection recess (14) corresponds to the position of the forming protrusion (13) and matches in shape.

10. The child tub overmold injection mold of claim 9, wherein, The injection recess (14) has a plurality of bathtub supporting leg forming grooves (15) therein.

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