Die for front decorating part of oil tank

Abstract

The invention relates to the technical field of molds, in particular to an oil tank front decorating part mold which comprises an upper mold body and a lower mold body, mold cavities are formed in the upper mold body and the lower mold body, the mold cavities in the upper mold body and the lower mold body are correspondingly arranged and communicate with each other, an excess material cavity is formed in the middle of each mold cavity, and the excess material cavity is formed between the two mold cavities. The excess material cavity is communicated with the mold cavities on the two sides, the upper mold is provided with an injection molding pipe corresponding to the excess material cavity, the bottom of the injection molding pipe is fixedly provided with a cutting plate, the cutting plate is arranged corresponding to the position and shape of the excess material cavity, the injection molding pipe is slidably connected with the upper mold, and the injection molding pipe can drive the cutting plate to move towards the excess material cavity. And a cutting blade is arranged at the edge of the cutting plate. The die cavities of the upper die and the lower die are correspondingly communicated and can be used for forming the oil tank front decorating part, and the excess material cavity is formed between the two die cavities and communicated with the die cavities so that excess materials can be conveniently collected. The injection molding pipe is used for injecting materials and can drive the cutting plate to move towards the excess material cavity, the cutting blade on the edge of the cutting plate can cut the materials between the excess material cavity and the mold cavity at proper time, the excess materials in the excess material cavity can be cut after injection molding is completed and waiting for forming, and secondary cutting does not need to be carried out after the excess materials are taken out. And the machining efficiency and the overall production efficiency can be improved to a certain extent.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of molds, in particular to a front oil tank decoration part mold. BACKGROUND

[0002] The front oil tank decoration part is a plastic part in front of the oil tank of a motorcycle, which can play a decorative and protective role and is fixed on the motorcycle body by bolts. The plastic part needs to be completely symmetrical, so it is usually necessary to injection mold in pairs, cut after injection molding, and then pair them one by one.

[0003] The mold of the front oil tank decoration part in the prior art is usually injection molded from the middle of the decoration part, and the whole is taken out after injection molding, and then the two plastic parts are separated by cutting, which can be used on the motorcycle. Each product needs to be cut again, the overall processing efficiency is low, and the production efficiency is affected. Some molds are provided with two injection ports and two corresponding mold cavities, but this method is equivalent to using two molds, and a special injection molding machine is needed during injection, which is still inconvenient. SUMMARY

[0004] To solve the problem that the mold of the front oil tank decoration part in the prior art is usually injection molded from the middle of the decoration part, the whole is taken out after injection molding, and then the two plastic parts are separated by cutting, which can be used on the motorcycle. Each product needs to be cut again, the overall processing efficiency is low, and the production efficiency is affected. The present application provides a front oil tank decoration part mold, and the specific scheme is as follows.

[0005] A front oil tank decoration part mold, comprising an upper mold and a lower mold, the upper mold and the lower mold are provided with mold cavities, the mold cavities in the upper mold and the lower mold are correspondingly arranged and communicated with each other, characterized in that: a surplus material cavity is arranged in the middle of the mold cavity, the surplus material cavity is arranged between the two mold cavities and communicated with the mold cavities on both sides, an injection pipe is arranged on the upper mold corresponding to the surplus material cavity, a cutting plate is fixedly arranged at the bottom of the injection pipe, the position and shape of the cutting plate corresponding to the surplus material cavity are arranged, the injection pipe is slidably connected with the upper mold, the cutting plate can be driven by the injection pipe to move towards the surplus material cavity, and a cutting blade is arranged at the edge of the cutting plate.

[0006] By adopting the above technical scheme, the mold cavities of the upper mold and the lower mold are correspondingly communicated and can be used for forming the front oil tank decoration part, the surplus material cavity is arranged between the two mold cavities and communicated with the mold cavities, which is convenient for collecting excess materials; the injection pipe is used for injecting materials and can drive the cutting plate to move towards the surplus material cavity, and the cutting blade at the edge of the cutting plate can cut the materials between the surplus material cavity and the mold cavity at the appropriate time. After the injection molding is completed and the forming is waited, the excess materials in the surplus material cavity can be cut, without the need for taking out and then cutting again, which can improve the processing efficiency and the overall production efficiency to a certain extent.

[0007] Optionally, a clearance slot is arranged on one side of the cutting plate close to the excess material cavity, the clearance slot is arranged corresponding to the shape of the excess material cavity and is used to wrap the excess material in the excess material cavity, the cutting blade is arranged around the clearance slot, and a cutting bevel is arranged on the cutting blade and located on the side close to the clearance slot.

[0008] By adopting the above technical scheme, the clearance slot corresponding to the shape of the excess material cavity wraps the excess material in the excess material cavity, so that the cutting is more accurate, the cutting blade arranged around the clearance slot can cut the excess material, and the cutting bevel on the side of the cutting blade close to the clearance slot can make the cutting more smooth and efficient.

[0009] Optionally, a heating plate is arranged in the clearance slot of the cutting plate, and the heating plate is used to abut the product in the excess material cavity, and the heating plate can melt the product in the excess material cavity.

[0010] By adopting the above technical scheme, the part of the product in the excess material cavity is heated by the heating plate, which can be softened or even melted, so that it is more convenient to cut the excess material from the product during cutting, facilitates the cutting and processing of the excess material, and further improves the production efficiency.

[0011] Optionally, a heating plate is also arranged at the injection pipe, the heating plate is arranged along the injection pipe, and the heating plate is used to heat the injection pipe.

[0012] By adopting the above technical scheme, the heating plate is arranged at the injection pipe, so that the material in the injection pipe can be kept at a suitable temperature, the material is prevented from being cooled and solidified, and the injection process is ensured to be smooth.

[0013] Optionally, a heat insulation plate is further arranged on the cutting plate, the heat insulation plate is arranged on the side close to the mold cavity, the heat insulation plate can abut the product at the connection between the mold cavity and the excess material cavity, and the heat insulation plate can also abut the cavity wall of the excess material cavity.

[0014] By adopting the above technical scheme, the heat insulation plate can prevent the heat of the cutting plate and the heating plate from being transferred to the product in the mold cavity, so as to ensure the stable quality of the product in the mold cavity, better realize heat insulation of the product at the connection between the mold cavity and the excess material cavity and the cavity wall of the excess material cavity, reduce the heat influence on the normally formed product, and reduce the re-melting of the already formed product.

[0015] Optionally, a recovery pipe is arranged at the position corresponding to the excess material cavity of the lower mold, a recovery valve is arranged at the position where the recovery pipe communicates with the excess material cavity, the recovery valve is used to open and close the recovery pipe, and the recovery pipe is used to recover the melted excess material.

[0016] By adopting the above technical scheme, the excess material melted in the excess material cavity can be effectively recycled by the recycling pipe and the recycling valve, waste of the excess material is avoided, resource utilization is improved, and the processing efficiency is further improved without the additional step of taking out the excess material from the excess material cavity.

[0017] Optionally, a recycling box is arranged in the lower die corresponding to the recycling pipe, the recycling box is arranged below the recycling pipe and communicates with the recycling pipe, and a heating plate is also arranged in the recycling box, which is used to heat the excess material in the recycling box.

[0018] By adopting the above technical scheme, the recycling box arranged in the lower die of the oil tank front trim mold corresponding to the recycling pipe can collect the melted excess material discharged from the recycling pipe, realize recycling of the excess material, and the heating plate arranged in the recycling box can continuously heat the excess material in the recycling box to prevent the excess material from solidifying, facilitate subsequent processing and reuse, and improve material utilization.

[0019] Optionally, the heating plate in the injection pipe is electrically connected with the heating plate in the cutting plate, and the heating plate in the injection pipe works synchronously with the heating plate in the cutting plate.

[0020] By adopting the above technical scheme, the heating plate in the injection pipe works synchronously with the heating plate in the cutting plate, the heating state of the injection pipe and the product in the excess material cavity is ensured to be consistent, the consistency and stability of the mold heating control are improved, the product forming quality is ensured, the situation that the raw material in the injection pipe solidifies when the unfinished excess material is collected is reduced, and the collection rate of the excess material is further improved.

[0021] Optionally, a sealing air cushion is further arranged on the cutting slope of the cutting piece, the sealing air cushion is arranged in a circumferential direction of the cutting plate, the sealing air cushion is arranged on the side close to the excess material cavity, and the sealing air cushion can be inflated to abut against the cavity wall of the excess material cavity.

[0022] By adopting the above technical scheme, since the excess material in part of the injection pipe also falls into the excess material cavity when the excess material in the excess material cavity needs to be heated, overflow may occur, but the sealing air cushion inflated to abut against the cavity wall of the excess material cavity can prevent the excess material from leaking, improve the sealing property and stability of the mold, and avoid that the excess material overflows to affect the product quality.

[0023] Optionally, a thermal expansion and contraction element is further arranged on the cutting plate, and the thermal expansion and contraction element can move towards the side of the excess material cavity after being heated.

[0024] By adopting the above technical scheme, the thermal expansion and contraction element can push the excess material to rise towards the excess material when the excess material is melted, so that the excess material is pushed into the recycling pipe, the recycling efficiency of the excess material is improved, and the In summary, the present application has at least the following beneficial effects: 1.The application solves the problem of the low overall processing efficiency and the impact on production efficiency of the prior art oil tank front decoration piece mold, which is usually injected from the middle of the decoration piece, the entire product is taken out after injection molding, and then the two plastic parts are separated by cutting, which can be used on a motorcycle, each product needs to be cut again, the overall processing efficiency is low, and the production efficiency is affected. The application sets a special excess material cavity on the mold, thereby reducing the step of processing excess material, without the need to cut after taking down the product, thereby improving the production efficiency.

[0025] 2.The application also re-heats and collects the excess material cut off, so that the excess material cut off can be re-melted and collected, and the excess material is directly re-collected and processed, further improving the resource utilization rate. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a front view of example one.

[0027] Figure 2 is a sectional view of example one.

[0028] Figure 3 is a sectional view of example one, mainly used to show the situation in the excess material cavity.

[0029] Figure 4 is a sectional view of example two, mainly used to show the situation in the excess material cavity.

[0030] Figure 5 is a sectional view of example three, mainly used to show the situation in the excess material cavity.

[0031] BRIEF DESCRIPTION OF DRAWINGS 1, upper mold; 11, mold cavity; 12, injection tube; 13, cutting plate; 131, cutting blade; 132, clearance groove; 133, cutting slope; 134, heating plate; 135, heat insulation plate; 136, sealed air cushion; 137, thermal expansion and cold shrinkage part; 2, lower mold; 21, excess material cavity; 22, recovery tube; 221, recovery valve; 23, recovery box. DETAILED DESCRIPTION

[0032] The application will be further described in detail below in combination with the drawings.

[0033] Example one An oil tank front decoration piece mold, such as Figure 1 and Figure 2As shown, it comprises an upper die 1 and a lower die 2, the upper die 1 and the lower die 2 are both provided with a die cavity 11, the die cavities 11 in the upper die 1 and the lower die 2 are correspondingly arranged and interconnected, the middle part of the die cavity 11 is provided with a surplus material cavity 21, the surplus material cavity 21 is arranged between the two die cavities 11, the surplus material cavity 21 is communicated with the die cavities 11 on both sides. In specific implementation, the upper die 1 and the lower die 2 are connected by the components on the injection molding machine and driven by the injection molding machine, and can realize the movement of approaching and separating. When injection molding, the raw material is first heated to a liquid state, then the raw material enters the surplus material cavity 21, and then flows from the surplus material cavity 21 to the die cavities 11 on both sides, gradually forming a product in the die cavity 11. Then wait for the product to solidify, and separate the upper die 1 and the lower die 2. The common processing method is to cut the surplus material at the surplus material cavity 21 and the product, and then collect the surplus material.

[0034] As shown in Figure 2 and Figure 3 , the upper die 1 is provided with an injection pipe 12 corresponding to the surplus material cavity 21, the bottom of the injection pipe 12 is fixedly provided with a cutting plate 13, the position and shape of the cutting plate 13 corresponding to the surplus material cavity 21 are arranged, the injection pipe 12 is slidingly connected with the upper die 1, the injection pipe 12 can drive the cutting plate 13 to move towards the surplus material cavity 21, and the edge of the cutting plate 13 is provided with a cutting blade 131. In specific implementation, the injection pipe 12 can be connected with a separate driving element, and can move along the vertical direction of the upper die 1 and the lower die 2 independently, and remain stationary during injection molding. When the injection molding is completed to a certain extent, the cutting plate 13 can be driven by the injection pipe 12 to move towards the surplus material cavity 21, and the unformed surplus material can be separated from the product on both sides by extrusion. Since the raw material has been stopped at this time, the surplus material will be re-pressed into the injection pipe 12, and the connection between the surplus material and the product will be cut off. The surplus material can be separated from the product in advance before the product is taken off. At this time, the surplus material will solidify on the cutting plate 13 and the injection pipe 12, and there is no need to further process the surplus material. Then, the surplus material can be heated and melted again to be injected into the die cavity 11 for injection molding, further improving the production efficiency.

[0035] As shown in Figure 2 and Figure 3 , the side of the cutting plate 13 close to the surplus material cavity 21 is provided with a recess 132, the recess 132 is arranged corresponding to the shape of the surplus material cavity 21 and is used to wrap the surplus material in the surplus material cavity 21, the cutting blade 131 is arranged around the recess 132, the cutting blade 131 is provided with a cutting inclined surface 133, and the cutting inclined surface 133 is arranged on the side close to the recess 132. In specific implementation, when cutting, the cutting inclined surface 133 can improve the cutting convenience and keep the flatness of the cutting surface on one side of the product, thereby improving the product quality and reducing the problem that the cut surplus material moves towards one side of the product and causes the product to malfunction.

[0036] AsFigure 2 And Figure 3 As shown in the cutting plate 13 in the slot 132 is provided with a heating plate 134, heating plate 134 for abutting the product in the excess material cavity 21, heating plate 134 can melt the product in the excess material cavity 21. Injection pipe 12 also provided with a heating plate 134, heating plate 134 along the injection pipe 12 is provided, heating plate 134 for heating injection pipe 12. In particular, the injection pipe 12 in the heating plate 134 and the heating plate 134 in the cutting plate 13 are electrically connected, the injection pipe 12 in the heating plate 134 and the heating plate 134 in the cutting plate 13 work synchronously, when the excess material of the excess material cavity 21 appears solidification, cutting action is difficult to continue, therefore in the cutting plate 13 is provided with heating plate 134, can reduce the product in the excess material cavity 21 solidification and affect the cutting problem, at the same time in the injection pipe 12 is also provided with heating plate 134 and synchronous heating, can make the excess material cavity 21 and injection pipe 12 in the raw material can be heated simultaneously, can reduce the excess material is squeezed into the injection pipe 12 after solidification, further improve the cutting effect of excess material, heating plate 134 using electric heating plate can realize heating, using copper wire or other power can be heated to heat the material to complete the excess material cutting, waiting for the injection pipe 12 in the excess material preliminary solidification can be opened mold to take out the product, then quickly after injection can be used in the injection pipe 12 in the raw material.

[0037] As Figure 2 And Figure 3 As shown in the cutting plate 13 is also provided with a heat insulation plate 135, heat insulation plate 135 is provided in the side close to the mold cavity 11, heat insulation plate 135 can abut the product at the connection of the mold cavity 11 and the excess material cavity 21, heat insulation plate 135 can also abut the cavity wall of the excess material cavity 21. In particular, the heat insulation plate 135 can be composed of, such as ceramic fiber, ultrafine glass wool, etc., with high temperature resistance and high heat insulation effect, can effectively reduce the product in the mold cavity 11 in the heating plate 134 heating excess material thus produced melting and other conditions, reduce the product thus damaged, further improve the product quality.

[0038] As Figure 2 And Figure 3As shown, a recovery pipe 22 is provided in the lower mold 2 corresponding to the residual material cavity 21. A recovery valve 221 is provided at the position where the recovery pipe 22 communicates with the residual material cavity 21. The recovery valve 221 is used to open and close the recovery pipe 22, which is used to recover the melted residual material. A recovery box 23 is provided in the lower mold 2 corresponding to the recovery pipe 22. The recovery box 23 is located below the recovery pipe 22 and communicates with it. A heating plate 134 is also provided in the recovery box 23, which is used to heat the residual material in the recovery box 23. In specific implementation, when injection molding is performed, it is no longer necessary to keep the raw material in the cutting plate 13 or the injection tube 12. The raw material can be directly injected into the recovery box 23 through the recovery pipe 22 by opening the recovery valve 221 for collection, further reducing the situation where the raw material is blocked in the injection tube 12 and difficult to melt, and further improving production efficiency. In other embodiments, the recovery box 23 can be directly connected to the box for storing raw materials and a pump can be set to extract and reuse the residual material.

[0039] Working principle: By setting a special material storage cavity 21 on the mold, the material is pre-processed, thereby reducing the steps of handling the material and eliminating the need to remove the product for cutting, thus improving production efficiency.

[0040] Example 2 like Figure 4 As shown, the main difference between Embodiment 2 and Embodiment 1 is that, in Embodiment 2, a sealing air cushion 136 is further provided on the cutting bevel 133 of the cutting blade. The sealing air cushion 136 is arranged circumferentially around the cutting plate 13 and is located on the side near the waste material cavity 21. The sealing air cushion 136 can expand and abut against the cavity wall of the waste material cavity 21. In specific implementation, the sealing air cushion 136 can seal the gaps, thereby reducing the leakage of waste material during the heating and melting process, and further improving product quality.

[0041] Working principle: The basic working principle is the same as in Example 1, but a sealing gasket 136 is added, which can reduce the leakage of residual material when it melts during heating and improve product quality.

[0042] Example 3 like Figure 5 As shown in Embodiment 3 and Embodiment 2, the cutting plate 13 is further provided with a thermal expansion and contraction component 137, which can move toward the waste material cavity 21 after being heated. In specific implementation, the thermal expansion and contraction component 137 can expand when heated, so it can push the waste material toward the recycling pipe 22 when the waste material melts, thereby improving the waste material recycling efficiency.

[0043] Working principle: The basic working principle is the same, but it can push the waste material during the heating and recycling process, thereby further improving the recycling efficiency of the waste material.

[0044] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and thus: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An oil tank front ornament mold, comprising an upper mold (1) and a lower mold (2), the upper mold (1) and the lower mold (2) are provided with a mold cavity (11), the mold cavity (11) in the upper mold (1) and the lower mold (2) is correspondingly arranged and communicated with each other, characterized in that: The middle part of the mold cavity (11) is provided with a flash cavity (21), the flash cavity (21) is arranged between two mold cavities (11), the flash cavity (21) is communicated with the mold cavities (11) on both sides, the upper die (1) is provided with an injection tube (12) corresponding to the flash cavity (21), the bottom of the injection tube (12) is fixedly provided with a cutting plate (13), the cutting plate (13) is arranged corresponding to the position and shape of the flash cavity (21), the injection tube (12) is slidably connected with the upper die (1), the injection tube (12) can drive the cutting plate (13) to move towards the flash cavity (21), the cutting plate (13) is provided with a cutting blade (131) at the edge thereof.

2. An oil tank front trim molding mold according to claim 1, characterized by: The cutting plate (13) is provided with a cutting blade (131) around the cutting plate (13), the cutting blade (131) is provided with a cutting slope (133), and the cutting slope (133) is arranged on the side close to the cutting plate (13).

3. An oil tank front trim molding mold according to claim 2, characterized by: The cutting plate (13) is provided with a heating plate (134) in the cutting plate (13), the heating plate (134) is used for abutting the product in the flash cavity (21), and the heating plate (134) can melt the product in the flash cavity (21).

4. The fuel tank fascia mold of claim 3, wherein: The injection tube (12) is also provided with a heating plate (134), the heating plate (134) is arranged along the injection tube (12), and the heating plate (134) is used for heating the injection tube (12).

5. An oil tank front trim molding mold according to claim 4, characterized by: The cutting plate (13) is also provided with a heat insulation plate (135), the heat insulation plate (135) is arranged on the side close to the mold cavity (11), the heat insulation plate (135) can abut the product at the connection between the mold cavity (11) and the flash cavity (21), and the heat insulation plate (135) can also abut the cavity wall of the flash cavity (21).

6. An oil tank front trim molding mold according to claim 4, wherein: The lower die (2) is provided with a recovery tube (22) corresponding to the position of the flash cavity (21), the recovery tube (22) is provided with a recovery valve (221) at the position communicated with the flash cavity (21), the recovery valve (221) is used for opening and closing the recovery tube (22), and the recovery tube (22) is used for recovering the melted flash.

7. An oil tank front trim molding mold according to claim 6, wherein: The lower die (2) is provided with a recovery tank (23) corresponding to the recovery tube (22), the recovery tank (23) is arranged below the recovery tube (22) and communicated with the recovery tube (22), and the recovery tank (23) is also provided with a heating plate (134), the heating plate (134) is used for heating the flash in the recovery tank (23).

8. A tank fascia mould as claimed in claim 7, wherein: The heating plate (134) in the injection tube (12) is electrically connected with the heating plate (134) in the cutting plate (13), and the heating plate (134) in the injection tube (12) and the heating plate (134) in the cutting plate (13) work synchronously.

9. A tank fascia mould as claimed in claim 8, wherein: The cutting slope (133) of the cutting piece is further provided with a sealing air cushion (136), which is arranged circumferentially around the cutting plate (13) and is arranged on the side close to the excess material cavity (21). The sealing air cushion (136) can be expanded to abut the cavity wall of the excess material cavity (21).

10. A tank fascia mould as claimed in claim 9, wherein: The cutting plate (13) is further provided with a thermal expansion and contraction element (137), which can move towards the side of the excess material cavity (21) after being heated.

Images