Sled car wind shield production mold

Abstract

The invention relates to the technical field of molds, in particular to a sled car windshield production mold which comprises an upper mold and a lower mold, mold grooves are formed in the upper mold and the lower mold and correspond to the shape of a product, the mold grooves of the upper mold and the lower mold can be matched to form a mold cavity for injection molding, a guide rod is arranged on the lower mold, and the upper mold is slidably connected to the guide rod. An injection molding groove is formed in the upper mold, an injection molding rod is arranged in the injection molding groove, the injection molding rod is embedded in the upper mold, and the injection molding rod is used for injecting an injection molding raw material into the mold cavity; a plurality of demolding grooves are formed in the lower mold, demolding rods are arranged in the demolding grooves, the demolding rods are slidably connected into the demolding grooves, pressure sensors are arranged at the top ends of the demolding rods, the pressure sensors are used for abutting against raw materials, and the pressure sensors stop moving when detecting that the pressure is smaller than a set value. When the pressure is low, it can be judged that the product is not completely solidified, and therefore jacking demolding is not conducted on the product at the moment, and the situation that the product is damaged is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of molds, in particular to a mold for producing a snowmobile windshield. Background Art

[0002] A sled or snowmobile originated from military technology. It is a vehicle developed for transporting supplies on the snow. It usually has rubber tracks instead of tires to reduce slipping. It is currently used in ski resorts and other venues as a special vehicle for rescue, transportation, and entertainment. It is generally a skid in front and tracks in the rear. It can move quickly on the snow. Small ski resorts can also hang a snow plow to level the snow trails.

[0003] Since sleds need to travel fast on the snow, in order to reduce the impact of wind resistance in the reverse direction of fast travel on the driver's field of vision and the impact of flying objects in front on the driver's field of vision, sleds are usually equipped with windshields for shielding. When manufacturing the windshield, the windshield is usually manufactured by injection molding. However, after injection molding, the mold under the existing technology is not only difficult to be ejected when it is not completely solidified, but also easily causes damage and deformation to the product, which has a greater impact on the wind resistance of windshield products. Summary of the invention

[0004] In order to solve the problem that after the mold is injected in the prior art, it is not only difficult to be ejected when it is not completely solidified, but also easily causes damage to the product, and has a great impact on the wind resistance of windshield products, the present application provides a sled windshield production mold, and the specific plan is as follows.

[0005] A snowmobile windshield production mold, comprising an upper mold and a lower mold, wherein mold grooves are arranged in the upper mold and the lower mold, wherein the mold grooves correspond to the shape of the product, and the mold grooves of the upper mold and the lower mold can cooperate to form a mold cavity for injection molding, characterized in that: a guide rod is arranged on the lower mold, the upper mold is slidably connected to the guide rod, an injection molding groove is arranged in the upper mold, an injection molding rod is arranged in the injection molding groove, the injection molding rod is embedded in the upper mold, and the injection molding rod is used to inject injection molding raw materials into the mold cavity; A plurality of demoulding grooves are provided in the lower mold, and a demoulding rod is provided in the demoulding groove. The demoulding rod is slidably connected in the demoulding groove. A pressure sensor is provided at the top of the demoulding rod. The pressure sensor is used to abut against the raw material. The pressure sensor stops moving when it detects that the pressure is less than a set value.

[0006] By adopting the above technical scheme, the snowmobile windshield production mold can realize efficient and precise injection molding and demolding processes. The coordinated design of the upper mold and the lower mold enables the injection molding material to evenly fill the mold cavity to ensure product quality. The setting of the injection molding groove and the injection molding rod facilitates the injection of the injection molding material and improves the injection molding efficiency. The design of the demolding groove and the demolding rod enables the product to be smoothly separated from the mold after the injection molding is completed, reducing manual intervention and improving the degree of production automation. The setting of the pressure sensor can monitor the pressure changes of the raw materials in real time. When the pressure is lower than the set value, the movement of the demolding rod will be automatically stopped. When the pressure is low, it can be judged that the product is not completely solidified. Therefore, the product is not demolded at this time to reduce damage to the product.

[0007] Optionally, a top support groove is opened in the lower mold, the top support groove is connected with the demoulding groove, the top support groove is used for injection molding raw materials to penetrate, and a rubber ring is arranged around the pressure sensor, and the rubber ring is used to abut the groove wall of the top support groove.

[0008] By adopting the above technical scheme, a top support groove is opened in the lower mold, and the injection molding material can be injected into the top support groove to form a protruding part. When stripping, the stripping rod can enter the top support groove along the stripping groove to push the product out. When the stripping rod ejects the uncooled product, it will not directly contact the product, but will first push the part in the top support groove to cause the part in the top support groove to deform, thereby reducing the impact on the product and further improving the product quality.

[0009] Optionally, a heat absorbing groove is provided at a position of the lower mold corresponding to the top support groove, the heat absorbing groove is not connected to the top support groove, oil for absorbing heat is provided in the heat absorbing groove, and the heat absorbing groove is arranged around the top support groove.

[0010] By adopting the above technical solution and setting a heat absorption groove, the part in the supporting groove can be cooled and the part is cooled to solidify. At this time, the solidified product is supported to reduce the impact on the product.

[0011] Optionally, a shearing head is also provided in the heat absorption groove, and the shearing head is respectively arranged on both sides of the top support groove, the shearing head is slidably connected in the heat absorption groove, the shearing head is arranged on the upper side of the top support groove, and the shearing head can shear the product when driven.

[0012] By adopting the above technical solution, a shearing blade is arranged in the heat absorption groove, so that the part of the product in the top support groove can be ejected, and the excess part can be separated from the product during demoulding, thereby further improving production efficiency.

[0013] Optionally, the shearing blade head is set to correspond to the shape of the top support groove, and the shearing blade head can completely block the top support groove during shearing.

[0014] By adopting the above technical solution and setting the shearing blade to correspond to the shape of the top support groove, the excess part can be completely cut off, thereby further improving the demoulding efficiency and further improving the production efficiency.

[0015] Optionally, a shearing bevel is provided on the shearing blade head, and a side of the shearing bevel away from the heat absorption groove is higher than a side close to the heat absorption groove.

[0016] By adopting the above technical solution and setting a shearing slope, it is easier to separate the excess part from the product during shearing, thereby improving the shearing efficiency, further improving the demoulding efficiency, reducing the excess residue on the product, and further improving the product quality.

[0017] Optionally, the oil in the heat absorption groove includes petroleum, which expands when heated and can push the shearing head to move. A return spring is also provided in the heat absorption groove, and the return spring has a tendency to pull the shearing head to move toward the heat absorption groove.

[0018] By adopting the above technical solution, petroleum is used as the oil. The thermal transmission performance of petroleum is high, and it can absorb heat quickly to help the product cool and solidify. After the petroleum is heated, its volume increases and requires a larger space, so it will push the shear head to cut the excess part of the product. That is, the excess part of the product can be cut after it cools and solidifies, reducing the situation where it is difficult to cut when it is not cooled or the adhesion causes the impact on the product.

[0019] Optionally, a heat dissipation channel is further provided in the lower mold, and the heat dissipation channel is also filled with the same petroleum and the petroleum circulates in the heat dissipation channel.

[0020] By adopting the above technical solution, a heat dissipation channel also using oil is set in the lower mold. The heat absorption efficiency of the oil in the heat dissipation channel is similar to that of the oil in the heat absorption groove. Therefore, when the oil in the heat absorption groove completes heat absorption, the oil in the heat dissipation channel can also be judged to have completed heat absorption, thereby judging whether demolding can be carried out, thereby further improving demolding efficiency and demolding quality.

[0021] Optionally, a reset rod is also provided in the lower mold, and the reset rod is transmission-connected to the demolding rod. The reset rod is arranged on both sides of the heat absorption groove, and a reset magnet is arranged at the end of the reset rod. The reset magnet is arranged corresponding to the reset spring and is used to adsorb the reset spring to pull the shearing head.

[0022] By adopting the above technical solution, a reset rod is set to assist the shear head to return to its original position when the oil has not completely cooled down after shearing is completed, and to assist the reset spring to recover the shear head. The reset is performed while the material is lifted up, so that the demoulding rod is not blocked by the shear head when lifting the product, thereby reducing the situation of being blocked during demoulding.

[0023] Optionally, a connecting rod is provided between the reset rod and the demoulding rod, one end of the connecting rod is fixedly connected to the reset rod, and the other end of the connecting rod is fixedly connected to the demoulding rod, and a clearance groove for the connecting rod to move is opened in the lower mold.

[0024] By adopting the above technical solution, a connecting rod is set for direct connection, which is more direct and the linkage is more stable. The clearance groove can enable the connecting rod to move normally, further improving the demoulding stability.

[0025] In summary, this application has at least the following beneficial effects: 1. The present application solves the problem that after the mold is injected under the prior art, it is not only difficult to be ejected when it is not completely solidified, but also easily causes damage to the product, which has a great impact on the wind resistance of windshield products. The present application uses a pressure sensor to detect during demolding to determine whether the product is in an unsolidified state, thereby determining whether demolding can continue. When the product does not meet the demolding conditions, the demolding rod stops working, reducing the situation where the product is not completely solidified and is damaged by extrusion, reducing the impact on the product during demolding, and thus improving product quality.

[0026] 2. The present application also provides a heat absorption groove that can cool down the excess part, which can assist in cooling the excess part and facilitate ejection during demoulding. At the same time, a shearing head is provided to cut the excess part, which can reduce the situation where the excess part affects demoulding.

[0027] 3. The present application also sets up a heat dissipation channel and uses oil to absorb heat and cool down. The heat dissipation channel and the oil in the heat absorption groove can absorb heat synchronously. When the oil in the heat absorption groove absorbs heat, the excess part can be cut off at any time when the excess part is between the soft state and the solidified state, which is then convenient for demolding. At the same time, it can be judged whether the product has completed cooling and solidification. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a stereogram of the first embodiment, mainly used to show the internal structure.

[0029] Figure 2 It is a cross-sectional view of the first embodiment.

[0030] Figure 3 It is a cross-sectional view of the second embodiment.

[0031] Figure 4 It is a cross-sectional view of the second embodiment, mainly used to show the heat absorption groove.

[0032] Figure 5 It is a cross-sectional view of the third embodiment, mainly used to show the heat absorption groove.

[0033] Description of reference numerals: 1. Upper mold; 11. Mold groove; 12. Injection groove; 121. Injection rod; 2. Lower mold; 21. Demolding groove; 211. Demolding rod; 212. Pressure sensor; 213. Rubber ring; 22. Top support groove; 23. Heat absorption groove; 24. Shearing blade; 241. Shearing slope; 242. Reset spring; 25. Heat dissipation channel; 26. Reset rod; 261. Reset magnet; 27. Connecting rod; 28. Give way groove; 3. Guide rod. DETAILED DESCRIPTION

[0034] The present application is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0035] Embodiment 1 A snowmobile windshield production mold, such as Figure 1 and Figure 2 As shown, it includes an upper mold 1 and a lower mold 2, both of which are provided with a mold groove 11, and the mold groove 11 is set corresponding to the shape of the product. The mold grooves 11 of the upper mold 1 and the lower mold 2 can cooperate to form a mold cavity for injection molding, and the lower mold 2 is provided with a guide rod 3, and the upper mold 1 is slidably connected to the guide rod 3. An injection groove 12 is provided in the upper mold 1, and an injection rod 121 is provided in the injection groove 12. The injection rod 121 is embedded in the upper mold 1, and the injection rod 121 is used to inject injection molding raw materials into the mold cavity. The lower mold 2 is also provided with the same injection groove 12 and injection rod 121. In specific implementation, the injected raw material is melted plastic, and the plastic is injected into the mold cavity and waits for the plastic to solidify and form to form a product, thereby completing the production.

[0036] like Figure 1 and Figure 2 As shown, a plurality of demoulding grooves 2111 are provided in the lower mold 2, and demoulding grooves 2111 are provided with demoulding rods 211, which are slidably connected in demoulding grooves 2111, and a pressure sensor 212 is provided at the top of demoulding rod 211, which is used to abut against the raw material, and stops moving when the pressure sensor 212 detects that the pressure is less than the set value. In specific implementation, the product can be ejected by demoulding rod 211 after the plastic is solidified and fixed, and when the plastic is not completely solidified, it is in a soft state, and at this time, demoulding rod 211 will squeeze the product when pushing the plastic, and the product will be deformed, so the pressure is small, and the pressure data received by pressure sensor 212 is also small, so demoulding can be stopped, thereby reducing the situation where the unsolidified product is squeezed and damaged.

[0037] like Figure 1 and Figure 2As shown, a supporting groove 22 is provided in the lower mold 2, and the supporting groove 22 is connected with the demoulding groove 2111, and the supporting groove 22 is used for the injection molding raw material to penetrate, and a rubber ring 213 is provided around the pressure sensor 212, and the rubber ring 213 is used to abut against the groove wall of the supporting groove 22. In specific implementation, a part can be injected into the supporting groove 22 during injection molding, and an excess part for supporting is formed in the supporting groove 22, so that the product will not be directly damaged during supporting, and the excess part can be cut after the production is completed, thereby further reducing the damage of the product during demoulding.

[0038] Working principle: Close the upper mold 1 and the lower mold 2, inject the injection molding material into the injection molding cavity, and wait for the product to solidify and form. Then, the upper mold 1 and the lower mold 2 of the product can be opened, and then the product can be demoulded and ejected to realize the manufacturing of the product. After the product solidifies, the product can be ejected to complete the production.

[0039] Embodiment 2 like Figure 3 and Figure 4 As shown, the main difference between the second embodiment and the first embodiment is that the lower mold 2 of the second embodiment is provided with a heat absorbing groove 23 at the position corresponding to the top supporting groove 22, the heat absorbing groove 23 and the top supporting groove 22 are not connected to each other, and oil for absorbing heat is arranged in the heat absorbing groove 23, and the heat absorbing groove 23 is arranged around the top supporting groove 22. In specific implementation, the oil in the heat absorbing groove 23 can absorb the oil in the top supporting groove 22, thereby assisting in cooling the excess part in the top supporting groove 22, accelerating the cooling of the product, and facilitating the cooling and solidification of the product at the position where the demoulding rod 211 needs to support, thereby further improving the demoulding efficiency and reducing the deformation of the demoulding position due to support.

[0040] like Figure 3 and Figure 4 As shown, a shearing blade 24 is also provided in the heat absorbing groove 23, and the shearing blade 24 is respectively provided on both sides of the top supporting groove 22, and the shearing blade 24 is slidably connected in the heat absorbing groove 23, and the shearing blade 24 is provided on the upper side of the top supporting groove 22, and the shearing blade 24 can shear the product under driving. In specific implementation, the excess part is cut off before demoulding is completed, so as to further improve the production efficiency of the product.

[0041] like Figure 3 and Figure 4 As shown, the shearing blade 24 is arranged in a shape corresponding to the top support groove 22, and the shearing blade 24 can completely block the top support groove 22 when shearing. A shearing bevel 241 is arranged on the shearing blade 24, and the side of the shearing bevel 241 away from the heat absorption groove 23 is higher than the side close to the heat absorption groove 23. In specific implementation, the shearing blade 24 can completely cut off the excess part when cutting, and the shearing bevel 241 can further increase the cutting efficiency, thereby improving the cutting efficiency and effect.

[0042] like Figure 3 and Figure 4 As shown, the oil in the heat absorbing groove 23 includes petroleum oil, which expands after being heated and can push the shearing blade 24 to move. A return spring 242 is also provided in the heat absorbing groove 23, and the return spring 242 has a tendency to pull the shearing blade 24 to move toward the heat absorbing groove 23. A heat dissipation channel 25 is also provided in the lower mold 2, and the heat dissipation channel 25 is also filled with the same petroleum oil and the petroleum oil circulates in the heat dissipation channel 25. In specific implementation, oil has high thermal conductivity and is not easy to evaporate. It can quickly absorb the heat of plastic to accelerate the cooling of plastic. After absorbing heat, the volume of oil will expand. Therefore, oil can be quickly pressurized after being heated. At this time, the product is between soft and solidified states, which is easier to cut. At this time, the excess part can be cut off to complete the removal of the excess part. Since the heat dissipation channel 25 and the inclined groove are filled with oil, the heat absorption efficiency of the two is similar, and the solidification state of the product can also be compared. After waiting for the oil temperature to drop, the reset spring 242 will retract the shear head 24. At this time, demolding can be performed to eject the excess part together with the product, thereby achieving demolding.

[0043] Working principle: The basic working principle is the same as that of the first embodiment, but a heat absorption groove 23 is added during the demoulding process. The heat absorption groove 23 can not only assist the cooling and solidification of the product at the demoulding point, but also quickly cut off the excess part during solidification to determine whether the product has completed cooling and solidification. At this time, the pressure sensor 212 is used to determine the demoulding timing and demoulding.

[0044] Embodiment 3 like Figure 5 As shown, a reset rod 26 is also provided in the lower mold 2, and the reset rod 26 is transmission-connected with the demoulding rod 211. The reset rod 26 is provided on both sides of the heat absorption groove 23, and a reset magnet 261 is provided at the end of the reset rod 26. The reset magnet 261 is provided corresponding to the reset spring 242 and is used to absorb the reset spring 242 to pull the shearing blade 24. A connecting rod 27 is provided between the reset rod 26 and the demoulding rod 211, one end of the connecting rod 27 is fixedly connected to the reset rod 26, and the other end of the connecting rod 27 is fixedly connected to the demoulding rod 211. A clearance groove 28 for the connecting rod 27 to move is provided in the lower mold 2. In specific implementation, when the volume of oil decreases slowly, the reset rod 26 can assist the reset of the product, thereby further improving the processing efficiency.

[0045] Working principle: The basic working principle is the same as that of the second embodiment, but a reset rod 26 is added to reset the shearing blade 24, further improving the processing efficiency.

[0046] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A snowmobile windshield production mold, comprising an upper mold (1) and a lower mold (2), wherein both the upper mold (1) and the lower mold (2) are provided with a mold groove (11), wherein the mold groove (11) is arranged corresponding to the shape of the product, and the mold grooves (11) of the upper mold (1) and the lower mold (2) can cooperate to form a mold cavity for injection molding, characterized in that: The lower mold (2) is provided with a guide rod (3), the upper mold (1) is slidably connected to the guide rod (3), an injection groove (12) is provided in the upper mold (1), an injection rod (121) is provided in the injection groove (12), the injection rod (121) is embedded in the upper mold (1), and the injection rod (121) is used to inject injection raw materials into the mold cavity; A plurality of demoulding grooves (21) (11) are provided in the lower mold (2), and a demoulding rod (211) is provided in the demoulding groove (21) (11). The demoulding rod (211) is slidably connected in the demoulding groove (21) (11), and a pressure sensor (212) is provided at the top end of the demoulding rod (211). The pressure sensor (212) is used to abut against the raw material, and the pressure sensor (212) stops moving when it detects that the pressure is less than a set value.

2. A snowmobile windshield production mold according to claim 1, characterized in that: A top supporting groove (22) is provided in the lower mold (2), the top supporting groove (22) is communicated with the demoulding groove (21) (11), the top supporting groove (22) is used for allowing injection molding raw materials to penetrate, and a rubber ring (213) is provided around the pressure sensor (212), and the rubber ring (213) is used to abut against the groove wall of the top supporting groove (22).

3. A snowmobile windshield production mold according to claim 2, characterized in that: A heat absorbing groove (23) is provided at a position of the lower mold (2) corresponding to the top supporting groove (22); the heat absorbing groove (23) and the top supporting groove (22) are not connected to each other; oil for absorbing heat is provided in the heat absorbing groove (23); and the heat absorbing groove (23) is provided around the top supporting groove (22).

4. A snowmobile windshield production mold according to claim 3, characterized in that: A shearing blade (24) is also provided in the heat absorption groove (23). The shearing blade (24) is respectively provided on both sides of the top supporting groove (22). The shearing blade (24) is slidably connected in the heat absorption groove (23). The shearing blade (24) is provided on the upper side of the top supporting groove (22). The shearing blade (24) can shear the product when driven.

5. A snowmobile windshield production mold according to claim 4, characterized in that: The shearing blade head (24) is arranged to correspond to the shape of the top support groove (22), and the shearing blade head (24) can completely block the top support groove (22) during shearing.

6. A snowmobile windshield production mold according to claim 4, characterized in that: The shearing blade (24) is provided with a shearing bevel (241), and a side of the shearing bevel (241) away from the heat absorption groove (23) is higher than a side close to the heat absorption groove (23).

7. A snowmobile windshield production mold according to claim 4, characterized in that: The oil in the heat absorption groove (23) includes petroleum, which expands after being heated and can push the shearing blade (24) to move. A return spring (242) is also provided in the heat absorption groove (23), and the return spring (242) has a tendency to pull the shearing blade (24) to move toward the heat absorption groove (23).

8. The snowmobile windshield production mold according to claim 7, characterized in that: A heat dissipation channel (25) is also provided in the lower mold (2), and the heat dissipation channel (25) is also filled with the same petroleum, and the petroleum circulates in the heat dissipation channel (25).

9. The snowmobile windshield production mold according to claim 7, characterized in that: A reset rod (26) is also provided in the lower mold (2), and the reset rod (26) is transmission-connected to the demoulding rod (211). The reset rod (26) is provided on both sides of the heat absorption groove (23). A reset magnet (261) is provided at the end of the reset rod (26). The reset magnet (261) is provided corresponding to the reset spring (242) and is used to absorb the reset spring (242) to pull the shearing blade (24).

10. A snowmobile windshield production mold according to claim 9, characterized in that: A connecting rod (27) is provided between the reset rod (26) and the demoulding rod (211); one end of the connecting rod (27) is fixedly connected to the reset rod (26), and the other end of the connecting rod (27) is fixedly connected to the demoulding rod (211); a clearance groove (28) for the connecting rod (27) to move is provided in the lower mold (2).

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