Injection mechanism of road cone machine and material blocking mechanism thereof

Abstract

The utility model discloses a material blocking mechanism which comprises a driving piece and a material blocking piece, and the driving piece drives the material blocking piece to move in the axial direction. The material blocking piece is telescopically connected to the mold cover plate, the mold cover plate is provided with a material injection channel, and the material blocking piece is used for opening and closing the material injection channel; the material blocking part can penetrate through the mold cover plate and eject off or eject to loosen residual materials on the mold cover plate through stretching and retracting. And in addition, the material blocking mechanism can be used for ejecting and falling the residual materials under the action of opening and closing the material injection channel, so that the residual materials are more convenient to treat.

Description

Technical Field

[0001] The utility model relates to a road cone machine, in particular to an injection mechanism and a material blocking mechanism of the road cone machine. Background Art

[0002] The molding process for plastic and rubber products typically requires a mold and an injection molding machine. The machine injects molten raw materials into the mold, where they are formed, and then removes the molded product through demolding. After each injection, the injection molding machine requires sealing the material channel to prevent any impact on the molding process and prevent material from leaking out and being wasted.

[0003] In the prior art, the specification drawing of the utility model patented two-color rubber injection system (CN219522948U) discloses an existing blocking structure, which directly injects material into the mold. This injection method makes it difficult to handle the residual material after molding. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention aims to provide an injection mechanism for a road cone machine and a material blocking mechanism thereof, which can facilitate the handling of residual materials.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A blocking mechanism includes a driving member and a blocking member, wherein the driving member drives the blocking member to move axially; the blocking member is telescopically connected to a mold cover plate, the mold cover plate has an injection channel, and the blocking member is used to open and close the injection channel; the blocking member can penetrate the mold cover plate and push down or loosen the residual material on the mold cover plate by telescoping.

[0007] As a further improvement of the present invention, the driving part includes a cylinder body, and the blocking part includes a telescopic rod connected to the cylinder body and a blocking rod connected to the cylinder body; a coupling is provided between the telescopic rod and the blocking rod, and the cylinder body drives the telescopic rod to move telescopically, and drives the blocking rod to open and close the injection channel through the coupling; the temperature transfer effect between the telescopic rod and the blocking rod is weakened by the coupling.

[0008] As a further improvement of the present invention, a plurality of heat dissipation slots or heat dissipation fins are provided on the coupling.

[0009] As a further improvement of the present invention, the two ends of the coupling used to connect the telescopic rod and the blocking rod are respectively provided with a connecting groove 1 and a connecting groove 2 that pass through the coupling laterally, and the openings of the connecting groove 1 and the connecting groove 2 both form a closing structure, and the ends of the telescopic rod and the blocking rod are provided with lateral protrusions for cooperating with the closing structure to limit the escape, and the lateral protrusions are located in the connecting groove 1 or the connecting groove 2 and move; the connecting groove 1 and the connecting groove 2 are circumferentially staggered on the coupling to form an angle to limit the telescopic rod and the blocking rod from sliding laterally out of the connecting groove 1 and the connecting groove 2.

[0010] As a further improvement of the present invention, the connecting groove 1 and the connecting groove 2 are circumferentially staggered on the coupling to form a 90° angle.

[0011] A road cone machine injection mechanism comprises an injection head, a mold cover plate, and a blocking mechanism; the blocking mechanism adopts any one of the blocking mechanisms described above; the injection head is used to inject material into an injection channel on the mold cover plate, the mold cover plate is provided with an injection cavity for cooperating with a feed port on the mold surface, the injection channel is connected to the injection cavity, and the blocking member pushes down or loosens the residual material in the injection cavity by telescoping.

[0012] As a further improvement of the present invention, a detachable docking joint is provided on the mold cover plate, and the injection channel is located in the docking joint; the blocking member opens and closes the injection channel in the docking joint by axial movement.

[0013] As a further improvement of the present invention, a docking port is provided on the docking head, which is concave and connected to the injection channel. The shape of the docking port is adapted to the shape of the injection head and is used for the injection head to be inserted into the docking port.

[0014] The beneficial effect of the present invention is that the present invention can allow the mold residue to remain outside the mold, and the blocking mechanism can be used to push down the residue under the action of opening and closing the injection channel, making the residue processing more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the assembly state of the utility model;

[0016] Figure 2 This is a schematic structural diagram of the injection mechanism of the road cone machine of the present utility model;

[0017] Figure 3 This is a schematic cross-sectional view of the injection mechanism of the road cone machine of the present invention;

[0018] Figure 4 This is a schematic diagram of the plugging structure of the utility model;

[0019] Figure 5 for Figure 2 A magnified view of part A in FIG;

[0020] Figure 6 for Figure 3 Enlarged view of part B in .

[0021] Figure numbers: 1. Cylinder body; 2. Blocking piece; 21. Telescopic rod; 22. Blocking rod; 23. Lateral protrusion; 3. Coupling; 31. Heat dissipation fin; 32. Connecting groove 1; 33. Connecting groove 2; 4. Injection head; 5. Butt joint; 6. Mold cover; 61. Injection cavity; 7. Injection channel. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0023] Reference Figure 1-6 As shown,

[0024] A blocking mechanism includes a driving member and a blocking member 2, the driving member drives the blocking member 2 to move axially; the blocking member 2 is telescopically connected to the mold cover plate 6, the mold cover plate 6 has an injection channel 7, and the blocking member 2 is used to open and close the injection channel 7; the blocking member 2 can penetrate the mold cover plate 6 and push down or loosen the residual material on the mold cover plate 6 by telescoping.

[0025] The driving member (such as a pneumatic cylinder or a hydraulic cylinder) drives the blocking member 2 to move along the axial direction of the injection channel 7 through the axial driving force. When injection is required, the driving member drives the blocking member 2 to retract, so that the injection channel 7 is opened, and the molten raw material can enter the mold through the injection channel 7; after the injection is completed, the driving member pushes the blocking member 2 to extend, blocking the injection channel 7 to prevent the raw material from overflowing. In addition, the design of the blocking member 2 passing through the mold cover 6 enables it to directly contact the residual material in the injection channel 7 during the extension and retraction process. When the blocking member 2 is extended, its end can push the residual material to make it fall off from the injection channel 7 or the surface of the mold cover 6, solving the problem of difficult to handle residual material accumulation in the prior art. This structure realizes the opening and closing of the injection channel 7 and the cleaning of residual material through the axial movement of the blocking member 2, simplifies the residual material processing process, and improves production efficiency.

[0026] The mold cover plate 6 in this solution is a cover plate used to press on the mold. On the one hand, it can position the mold, and on the other hand, it can cooperate with the mold to form an injection structure. For example, there are multiple holes on the mold. The mold cover plate 6 cooperates with the injection channel 7 to introduce the material into each hole and enter the mold. At this time, the residual material will remain between the mold cover plate 6 and the mold and will not be formed in the mold. At the same time, the ejection method of the blocking piece 2 makes it more convenient to handle the residual material.

[0027] The drive element includes a cylinder body 1, and the blocking element 2 includes a telescopic rod 21 connected to the cylinder body 1 and a blocking rod 22 connected to the cylinder body 1. A coupling 3 is provided between the telescopic rod 21 and the blocking rod 22. The cylinder body 1 drives the telescopic rod 21 to move telescopically, and drives the blocking rod 22 through the coupling 3 to block or release the material. The cylinder body 1 can be an oil cylinder, and the telescopic rod 21 can be directly the piston shaft of the cylinder body 1. The telescopic rod 21 is connected to the blocking rod 22 via the coupling 3. The end of the blocking rod 22 is used to block the injection channel 7.

[0028] When cylinder body 1 is operating, telescopic rod 21 telescopes and retracts, transmitting this motion to blocking rod 22 via coupling 3. Due to the provision of coupling 3, telescopic rod 21 and blocking rod 22 are not directly rigidly connected (or integrally formed with each other), but rather force is transmitted through coupling 3. During the injection process, blocking rod 22 comes into contact with high-temperature material, which is relatively hot. If directly connected to telescopic rod 21, this heat would be transferred along telescopic rod 21 to cylinder body 1, causing the cylinder body 1 to heat up. This high temperature can particularly degrade the hydraulic fluid performance and cause oil leaks. However, the isolation provided by coupling 3 effectively reduces heat transfer to telescopic rod 21 during heat transfer, thereby reducing the thermal impact on cylinder body 1. To further enhance the temperature isolation effect, coupling 3 could be made of ceramic or insulating metal, for example, which has a low thermal conductivity and significantly blocks the heat transfer path. At the same time, when the cylinder body 1 drives the telescopic rod 21 to move, the coupling 3 can still accurately drive the blocking rod 22 to complete the blocking or unblocking action, ensuring effective opening and closing control of the injection channel 7. Through the provision of the coupling 3, this structure effectively isolates the high-temperature area from the cylinder body 1 without affecting the normal operation of the blocking mechanism, alleviates the problem of oil leakage in the cylinder, and improves the reliability of the mechanism.

[0029] In a further configuration, the coupling 3 is provided with a plurality of heat dissipation slots or heat dissipation fins 31. The heat dissipation slots can be strip-shaped, ring-shaped, etc. and distributed on the outer circumference or inside of the coupling 3, and the heat dissipation fins 31 are sheet-like structures extending outward and evenly arranged on the surface of the coupling 3.

[0030] When the blocking rod 22 heats up due to contact with high-temperature material, some of this heat will still be transferred to the coupling 3. In this case, the heat dissipation grooves or fins 31 on the coupling 3 increase the contact area with the air, accelerating heat dissipation. For example, by increasing the surface area, the fins 31 and heat dissipation grooves utilize the principle of air convection to quickly dissipate heat from the coupling 3 to the surrounding environment, lowering the temperature of the coupling 3 and, in turn, reducing the heat transferred to the telescopic rod 21. This further improves the protection of the cylinder body 1, ensuring that the cylinder operates at a lower temperature and reducing the risk of oil leakage.

[0031] To facilitate installation, the two ends of the coupling 3 used to connect the telescopic rod 21 and the blocking rod 22 are respectively provided with a connecting groove 1 32 and a connecting groove 2 33 that pass through the coupling 3 laterally. The openings of the connecting groove 1 32 and the connecting groove 2 33 both form a closing structure, and the ends of the telescopic rod 21 and the blocking rod 22 are provided with lateral protrusions 23 for cooperating with the closing structure to limit their escape. The lateral protrusions 23 are located in the connecting groove 1 32 or the connecting groove 2 33 and move; the connecting groove 1 32 and the connecting groove 2 33 are circumferentially dislocated on the coupling 3 to form an angle to limit the telescopic rod 21 and the blocking rod 22 from sliding laterally out of the connecting groove 1 32 and the connecting groove 2 33.

[0032] When the telescopic rod 21 drives the coupling 3, the lateral protrusions 23 within the first connecting groove 32 push the coupling 3 to rotate or move, which in turn drives the blocking rod 22 via the lateral protrusions 23 within the second connecting groove 33. The closed-end structure restricts the lateral protrusions 23 to movement within the connecting groove and prevents them from dislodging from the opening, thus ensuring the stability of the connection between the telescopic rod 21, the coupling 3, and the blocking rod 22. Furthermore, the first connecting groove 32 and the second connecting groove 33 are circumferentially offset to form an angle (e.g., 30°, 45°, etc.). This allows the lateral protrusions 23 to be restrained by the groove walls as they slide within the grooves, preventing the telescopic rod 21 and the blocking rod 22 from sliding laterally during transmission and enhancing the reliability of the connection. For example, when the blocking rod 22 is subjected to lateral force, the offset angle allows the groove walls to effectively block the sliding of the lateral protrusions 23, preventing connection failure. This connection structure not only enables motion transmission between the telescopic rod 21 and the blocking rod 22, but also ensures the stability of the connection through mechanical limiters, preventing the components from falling out due to vibration or external forces. By setting a gap between the lateral protrusion 23 and the groove wall, a certain range of movement is allowed to accommodate possible installation errors or displacement during operation, ensuring the long-term stable operation of the blocking mechanism.

[0033] During installation, the connection can be completed by simply sliding the lateral protrusion 23 into the side of the connecting groove. After installation, the blocking rod 22 is inserted into the position where blocking is required, and the cylinder body 1 is fixed at the same time to complete the installation.

[0034] Preferably, the connecting groove 1 32 and the connecting groove 2 33 are circumferentially offset to form a 90° angle on the coupling 3. This angle enables the connecting groove 1 32 and the connecting groove 2 33 to be vertically distributed in the circumferential direction.

[0035] When the connection groove 1 32 and the connection groove 2 33 are misaligned by 90°, the misalignment angle can provide a stronger limiting effect, prevent the components from loosening or falling off, ensure the reliability and stability of the blocking mechanism, and do not affect the normal telescopic transmission function.

[0036] Preferably, the ends of the coupling 3, which are used to connect the telescopic rod 21 and the blocking rod 22, are respectively provided with a connecting groove 1 32 and a connecting groove 2 33 that pass through the coupling 3 laterally. Both the connecting groove 1 32 and the connecting groove 2 33 are T-shaped slots. The telescopic rod 21 and the blocking rod 22 are respectively located in the connecting groove 1 32 and the connecting groove 2 33, and the ends are adapted to the T-shaped slots to form a sliding fit with the T-shaped slots while restricting the telescopic rod 21 and the blocking rod 22 from axially disengaging from the T-shaped slots. The connecting groove 1 32 and the connecting groove 2 33 are circumferentially offset from the coupling 3 to form an angle to restrict the telescopic rod 21 and the blocking rod 22 from sliding laterally out of the connecting groove 1 32 and the connecting groove 2 33. The cross section of the T-shaped slot is T-shaped, and the T-shaped blocks at the ends of the telescopic rod 21 and the blocking rod 22 can slide axially within the slot but cannot escape from the opening of the T-shaped slot.

[0037] The above describes a blocking mechanism, which is used in the injection mechanism of a road cone machine, and includes an injection head 4, a blocking mechanism, and a docking port for docking the injection head 4; the blocking mechanism adopts an upper blocking mechanism. The cylinder body 1 is fixedly connected at a position close to the docking port, and the blocking rod 22 extends into the docking port to form or release the blockage by telescoping the docking port, and the cylinder body 1 and the blocking rod 22 are both separated from the injection head 4. The cylinder body 1 is installed on the equipment frame next to the injection head 4 by a fixing structure such as a bracket or bolts, maintaining a certain distance from the injection head 4. The axis of the blocking rod 22 is aligned with the axis of the docking port to ensure that the docking port can be accurately blocked.

[0038] When the injection head 4 injects molten material into the mold, the cylinder body 1 drives the blocking rod 22 to retract, opening the docking port, and the material is injected into the mold through the docking port; after the injection is completed, the cylinder body 1 drives the blocking rod 22 to extend, blocking the docking port to prevent material leakage. Since the blocking mechanism adopts the structure of the above embodiment, the cylinder body 1 and the blocking rod 22 are connected by a coupling 3, and the cylinder body 1 and the blocking rod 22 are separated from the injection head 4, avoiding the high temperature of the injection head 4 from being directly transferred to the cylinder body 1. For example, the high temperature of the injection head 4 is mainly concentrated at the discharge end, and the blocking rod 22 extends into the docking port to contact the high-temperature material, but it is connected to the telescopic rod 21 through the coupling 3, and the heat is blocked by the coupling 3 and cannot be transferred to the cylinder body 1 in large quantities; at the same time, the cylinder body 1 is fixed in a position close to the docking port but separated from the injection head 4, and there is a certain space between the two, which further reduces the influence of heat conduction and heat radiation. This design enables the cylinder body 1 (especially the oil cylinder) to operate in a relatively low temperature environment, effectively alleviating the oil leakage problem caused by high temperature, improving the working stability and service life of the injection mechanism, while ensuring the accuracy and reliability of the blocking action, and ensuring the smooth progress of the injection process.

[0039] In another embodiment, an injection mechanism of a road cone machine includes an injection head 4, a mold cover plate 6, and a blocking mechanism; the blocking mechanism adopts a blocking mechanism as described in any of the above-mentioned improved schemes; the injection head 4 is used to inject material into the injection channel 7 on the mold cover plate 6, and the mold cover plate 6 is provided with an injection cavity 61 for cooperating with the feed port on the mold surface, the injection channel 7 is connected to the injection cavity 61, and the blocking member 2 is telescopically pushed down or loosened to remove the residual material in the injection cavity 61.

[0040] The injection head 4 injects the molten plastic raw material into the injection cavity 61 through the injection channel 7. The injection cavity 61 is docked with the feed port on the surface of the mold, and the raw material enters the mold cavity through the feed port for molding. After the injection is completed, the blocking member 2 of the blocking mechanism extends to block the injection channel 7. At the same time, its end extends into the injection cavity 61 to push down or loosen the residual raw material (such as the cooled material head or waste material) in the injection cavity 61. The residual material can be pushed out of the injection cavity 61 by the telescopic action of the blocking member 2, avoiding the accumulation of residual material and affecting the accuracy of the next injection. Compared with the prior art method of directly injecting into the mold, which makes it difficult to clean the residual material, this structure concentrates the residual material in the injection cavity 61 area through the cooperation between the injection cavity 61 and the blocking member 2, which is convenient for unified cleaning and reduces the difficulty of residual material handling. In addition, the design of the blocking member 2 passing through the mold cover plate 6 allows it to directly act on the injection cavity 61, and the cleaning effect is more thorough.

[0041] In order to facilitate use and replacement, a detachable docking joint 5 is provided on the mold cover 6, and an injection channel 7 is located in the docking joint 5; the blocking member 2 opens and closes the injection channel 7 in the docking joint 5 by axial movement.

[0042] The docking joint 5 is fixed to the mold cover plate 6 by means of threaded connection, snap fasteners or flanges, and the injection channel 7 is set through the docking joint 5. During injection, the injection head 4 is aligned with the injection channel 7 of the docking joint 5 to inject material; when the blocking member 2 moves axially, its end extends into the injection channel 7 of the docking joint 5 to realize the opening and closing of the channel. The detachable docking joint 5 is designed to facilitate maintenance and replacement: when the docking joint 5 is worn or blocked due to long-term contact with high-temperature raw materials, the docking joint 5 can be directly disassembled for cleaning or replacement without disassembling the entire mold cover plate 6, reducing maintenance time and cost. In addition, the docking joint 5 can be manufactured separately from high-temperature resistant and wear-resistant materials (such as cemented carbide) to increase the service life of local components, while the main body of the mold cover plate 6 can be made of conventional materials to reduce overall costs.

[0043] In order to facilitate precise docking, in an optional solution, a docking port is provided on the docking head 5, which is concave and connected to the injection channel 7. The shape of the docking port is adapted to the shape of the injection head 4 for insertion of the injection head 4 for docking.

[0044] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A blocking mechanism, comprising a driving member and a blocking member, characterized in that: The driving member drives the blocking member to move axially; the blocking member is telescopically connected to the mold cover plate, the mold cover plate has an injection channel, and the blocking member is used to open and close the injection channel; the blocking member can penetrate the mold cover plate and push down or loosen the residual material on the mold cover plate by telescoping.

2. The blocking mechanism according to claim 1, characterized in that: The driving part includes a cylinder body, and the blocking part includes a telescopic rod connected to the cylinder body and a blocking rod connected to the cylinder body; a coupling is provided between the telescopic rod and the blocking rod, and the cylinder body drives the telescopic rod to move telescopically, and drives the blocking rod to open and close the injection channel through the coupling; the temperature transfer effect between the telescopic rod and the blocking rod is weakened by the coupling.

3. The material blocking mechanism according to claim 2, characterized in that: The coupling is provided with a plurality of heat dissipation slots or heat dissipation fins.

4. The material blocking mechanism according to claim 2 or 3, characterized in that: The coupling is used to connect the telescopic rod and the blocking rod, and both ends of the coupling are respectively provided with a connecting groove 1 and a connecting groove 2 that pass through the coupling laterally. The openings of the connecting groove 1 and the connecting groove 2 both form a closing structure. The ends of the telescopic rod and the blocking rod are provided with lateral protrusions for cooperating with the closing structure to limit their escape. The lateral protrusions are located in the connecting groove 1 or the connecting groove 2 and move freely. The connecting groove 1 and the connecting groove 2 are circumferentially staggered on the coupling to form an angle to limit the telescopic rod and the blocking rod from sliding laterally out of the connecting groove 1 and the connecting groove 2.

5. The blocking mechanism according to claim 4, characterized in that: The connecting groove 1 and the connecting groove 2 are circumferentially staggered on the coupling to form a 90° angle.

6. A road cone machine injection mechanism, characterized in that: It includes an injection head, a mold cover plate, and a blocking mechanism; the blocking mechanism adopts the blocking mechanism described in any one of claims 1 to 5; the injection head is used to inject material into the injection channel on the mold cover plate, and the mold cover plate is provided with an injection cavity for cooperating with the feed port on the mold surface, the injection channel is connected to the injection cavity, and the blocking piece is telescopically pushed down or loosened by the residual material in the injection cavity.

7. The road cone injection mechanism according to claim 6, characterized in that: The mold cover plate is provided with a detachable butt joint, and the injection channel is located in the butt joint; the blocking member opens and closes the injection channel in the butt joint by axial movement.

8. The road cone injection mechanism according to claim 7, characterized in that: The docking head is provided with a docking port, which is concave and communicated with the injection channel. The shape of the docking port is adapted to the shape of the injection head and is used for the injection head to be inserted into the docking port.

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