Hydraulic mold unloading device

Abstract

The utility model belongs to the technical field of lead extruders, and relates to a hydraulic die unloading device which comprises a connecting mechanism, a hydraulic driving mechanism and an ejector rod, one end of the connecting mechanism is fixedly connected with the hydraulic driving mechanism, the other end of the connecting mechanism is used for being fixed on a lead extruder, the ejector rod comprises a die unloading end and a stress end, and the hydraulic driving mechanism drives the die unloading end to disassemble a die core through the stress end. Through the connection design of the connecting mechanism, the hydraulic driving mechanism and the lead extruding machine and the matching of the ejector rod, the fixed connection between the mold core and the lead extruding machine is relieved, the simple, convenient and safe separation between the mold core and the lead extruding machine is realized, the production efficiency is improved, and the safety of operators is guaranteed. The device has the advantages of safety, reliability and easiness in maintenance, and is particularly suitable for the operation of the lead extruding machine.

Description

Technical Field

[0001] The utility model belongs to the technical field of lead extruders, and in particular relates to a hydraulic die unloader. Background Art

[0002] Lead extruder is a kind of equipment specially used for producing wires and cables. It can evenly coat the lead liquid on the cable to form a protective lead sheath. This lead sheath has the characteristics of high voltage insulation, corrosion resistance and electromagnetic interference shielding, so it is widely used in mines, cross-river cables, cross-sea cables and other occasions that require special protection. Lead extruder usually includes die base body, die core base, die core, flow guide die core, hydraulic die adjustment device, die cover, adjustment screw, front screw sleeve, pressure equalizing ring, water spray ring and lifting device. These parts work together to ensure the normal operation of the lead extruder and ensure that the lead liquid can be evenly coated on the cable to form a smooth and dense lead sheath. Among them, the die core is one of the most critical parts. After the lead extruder runs for a long time, the die core may be worn or attached with residual materials. In order to ensure the normal operation of the lead extruder and the extrusion quality of the lead sheath, it is very important to regularly maintain and service the die core. In addition, the outer diameter of the lead tube extruded by the commonly used 150 / 5 lead extruder is Φ20~Φ80mm, Φ40~Φ110mm. With the expansion of the application range of cables and the continuous growth of market demand, users have higher and higher requirements for cable diameters. If users need to produce cables with lead tubes of Φ20~Φ140mm specifications, they need to replace the matching mold core. Therefore, in the production of wires and cables, disassembling the mold core in the lead extruder is a necessary work procedure.

[0003] However, due to the influence of stress and pressure, the mold core is tightly fixed in the mold base, and it is difficult for the operator to manually remove it from the mold base. In addition, after the lead extruder is finished, since the mold core is still in a high temperature state, in order to ensure operational safety, the operator usually waits for it to cool down naturally before manually removing it. Although this reduces the risk of safety accidents, it prolongs the production cycle and affects production efficiency. Therefore, how to easily and safely remove the mold core in the lead extruder is an important issue currently facing the operation of the lead extruder. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned problems existing in the prior art and to provide a hydraulic mold unloader, which, through the cooperation of a connecting mechanism, a hydraulic drive mechanism and a push rod, enables the mold core to be easily and safely ejected from the mold base body by the push rod, thereby improving production efficiency and ensuring the safety of operators, and effectively solving the technical problem of difficulty in manually unloading the mold core.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] The utility model discloses a hydraulic mold unloader, comprising a connecting mechanism, a hydraulic driving mechanism and a push rod, wherein one end of the connecting mechanism is fixedly connected to the hydraulic driving mechanism, and the other end is used to be fixed on a lead extruder, the push rod comprises a mold unloading end and a force-bearing end, and the hydraulic driving mechanism drives the mold unloading end to disassemble the mold core via the force-bearing end.

[0007] The connecting mechanism includes a movable plate and a holding ring for fixing on the lead extruder, the movable plate is detachably connected to the holding ring, the hydraulic drive mechanism is fixed on the movable plate, and the force-bearing end of the push rod passes through the holding ring and cooperates with the hydraulic drive mechanism to control the movement of the unloading end.

[0008] Connecting columns facing the hydraulic drive mechanism are symmetrically fixed on both sides of the holding ring, and the two ends of the movable plate are movably connected between the connecting columns through column pins. After any column pin is removed, the movable plate can rotate around the other column pin. After all the column pins are removed, the movable plate is separated from the holding ring.

[0009] Positioning columns are integrally formed at both ends of the movable plate, and through holes are provided on the positioning columns and the connecting columns, and column pins are inserted into the through holes of the positioning columns and the connecting columns.

[0010] The hydraulic drive device includes a manual oil pump, an oil cylinder and a base plate. The manual oil pump is fixed above the oil cylinder through the base plate. One end of the oil cylinder is fixed in the middle of the movable plate, and the other end is connected to the manual oil pump through a high-pressure hose. The oil cylinder is fixed below the base plate.

[0011] The holding ring is formed by connecting two holding hoops through bolts.

[0012] The advantages of adopting the utility model are:

[0013] 1. The hydraulic mold unloader described in the utility model, firstly, through the cooperation of the connecting mechanism, the hydraulic driving mechanism and the ejector rod, the operator can easily control the ejector rod to dismantle the mold core, which greatly simplifies the operation process and improves the convenience of operation.

[0014] Secondly, the cooperation between the hydraulic drive mechanism and the ejector rod makes it easy to overcome the tightly fixed state of the mold core and the mold base, avoiding direct contact between the operator and the high-temperature mold core, significantly reducing the risks during operation and enhancing the safety of operation.

[0015] Thirdly, the cooperation between the hydraulic drive mechanism and the ejector rod enables the mold core to be disassembled quickly and accurately, avoiding the time of waiting for the mold core to cool naturally, further improving production efficiency and achieving high efficiency of disassembly.

[0016] In summary, the hydraulic mold unloader of the utility model realizes the simple, safe and efficient disassembly of the mold core through the cooperation of the connecting mechanism, the hydraulic drive mechanism and the ejector rod, and significantly improves the production efficiency and operational safety.

[0017] 2. The hydraulic mold unloader described in the utility model is designed to be detachably connected to the holding ring through the movable plate, so that the hydraulic mold unloader can be assembled and disassembled as needed, and has the advantage of high flexibility.

[0018] 3. The hydraulic mold unloader described in the utility model avoids the tediousness of overall disassembly of the movable plate by connecting the column and the column pin in cooperation with the movable plate, thereby greatly simplifying the assembly and disassembly process of the movable plate and improving the convenience of operating the hydraulic mold unloader.

[0019] 4. The hydraulic mold unloader described in the utility model further improves the convenience of disassembly and assembly of the hydraulic mold unloader through the cooperation of the positioning column, the connecting column and the through hole.

[0020] 5. The hydraulic mold unloader described in the utility model controls the manual oil pump to make the piston rod of the oil cylinder apply thrust to the force-bearing end of the push rod, thereby driving the unloading end to eject the mold core, simplifying the operation process of unloading the mold core, allowing operators to work more safely and efficiently.

[0021] 6. The hydraulic mold unloader described in the utility model adopts a ring design formed by two clamps connected by bolts, which not only simplifies the installation and disassembly process, but also significantly enhances the stability of the hydraulic mold unloader during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional schematic diagram of the utility model in a state of being connected with a mold base body;

[0023] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0025] The numbers in the figure are: 1. push rod, 2. holding ring, 3. manual oil pump, 4. oil cylinder, 5. high-pressure hose, 6. positioning column, 7. column pin, 8. mold base body, 9. bottom plate, 10. mold core, 11. movable plate, 12. connecting column. DETAILED DESCRIPTION

[0026] The following will be described in detail in conjunction with the drawings and specific implementation methods of the specification. In the present utility model, for the convenience of description, the description of the relative position relationship of each component is described according to the layout of the drawings in the specification, such as: the position relationship of front, back, top, bottom, left, right, etc. is determined according to the layout direction of the drawings in the specification.

[0027] like Figure 1-2As shown, a hydraulic mold unloader includes a connecting mechanism, a hydraulic drive mechanism and a push rod 1, one end of the connecting mechanism is fixedly connected to the hydraulic drive mechanism, and the other end is used to be fixed on the lead extruder. Specifically, the other end of the connecting mechanism is connected to the end of the mold base body 8. In the field of lead extruders, the installation positions and connection methods of components such as the mold core 10 and the mold base body 8 are conventional, so they are not repeated here. The push rod 1 includes a mold unloading end and a force-bearing end, and the hydraulic drive mechanism drives the mold unloading end to disassemble the mold core 10 through the force-bearing end. When the hydraulic drive mechanism is started, the push rod 1 can release the fixed connection between the mold core 10 and the lead extruder under the thrust of the hydraulic drive mechanism, thereby realizing the disassembly of the mold core 10. It should be noted that the push rod 1 and the hydraulic drive mechanism can be either a split structure or a fixed connection structure. When the split structure is adopted, the ejector rod 1 has no connection with the hydraulic drive mechanism. When the disassembly process is started, the force-bearing end and the mold-discharging end of the ejector rod 1 respectively contact the hydraulic drive mechanism and the mold core 10 to be ejected, thereby ejecting the mold core 10. When the fixed connection structure is adopted, the force-bearing end of the ejector rod 1 is fixedly connected with the driving end of the hydraulic drive mechanism. When the disassembly process is started, the mold-discharging end of the ejector rod 1 contacts the mold core 10 to be ejected, thereby ejecting the mold core 10. The connection mechanism, the hydraulic drive mechanism and the ejector rod 1 cooperate to ensure that the mold core can be easily, safely and efficiently disassembled from the lead extruder.

[0028] like Figure 1-2 As shown, the connection mechanism includes a movable plate 11 and a ring 2 for fixing on the lead extruder, the movable plate 11 is detachably connected to the ring 2, and the hydraulic drive mechanism is fixed on the movable plate 11. The design that the movable plate 11 is detachably connected to the ring 2 allows the hydraulic mold unloader to be assembled and disassembled as needed, which has the advantage of high flexibility. When the hydraulic mold unloader enters the disassembly working procedure, the push rod 1 is located between the mold core 10 and the hydraulic drive mechanism. Under the thrust of the hydraulic drive mechanism, the push rod 1 moves along the axial direction of the ring 2 to push the mold core 10 out of the lead extruder.

[0029] like Figure 2-3 As shown, both sides of the holding ring 2 are symmetrically fixed with connecting columns 12 facing the hydraulic drive mechanism, and the two ends of the movable plate 11 are movably connected between the connecting columns 12 through column pins 7. After any column pin 7 is removed, the movable plate 11 can rotate around the other column pin 7. After all the column pins 7 are removed, the movable plate 11 is separated from the holding ring 2, and the movable plate 11 can be removed from the holding ring 2. Specifically, the connecting columns 12 can be set to four, so that Figure 2Taking the direction shown as an example, four connecting columns 12 are symmetrically arranged in groups of two on the front and rear sides of the holding ring 2, and there is a gap between the holding ring 2 and the movable plate 11. Through the cooperation of the connecting columns 12 and the column pins 7, the movable plate 11 can be disassembled in two ways: first, the column pins 7 at both ends of the movable plate 11 are removed at the same time, and the movable plate 11 can be completely disassembled and separated from the connecting columns 12; second, only the column pin 7 at one end needs to be removed, and the movable plate 11 can rotate around the column pin 7 at the other end. During the operation of the lead extruder, this design avoids the tediousness of disassembling the movable plate 11 as a whole, thereby greatly simplifying the assembly and disassembly process of the movable plate 11 and improving the convenience of the hydraulic unloader operation.

[0030] like Figure 2-3 As shown, positioning columns 6 are formed integrally at both ends of the movable plate 11, and through holes are provided on the positioning columns 6 and the connecting columns 12, and the through holes on the positioning columns 6 correspond to the through holes on the connecting columns 12, and the column pins 7 are inserted into the through holes of the positioning columns 6 and the connecting columns 12. The cooperation of the positioning columns 6, the connecting columns 12 and the through holes further improves the convenience of disassembly and assembly of the hydraulic unloader.

[0031] like Figure 2-3 As shown, the hydraulic drive mechanism includes a manual oil pump 3, an oil cylinder 4 and a bottom plate 9. The manual oil pump 3 is fixed above the oil cylinder 4 through the bottom plate 9. The oil cylinder 4 is fixed in the middle of the movable plate 11 and connected to the manual oil pump 3 through a high-pressure hose 5. The oil cylinder 4 can also be fixed below the bottom plate 9 by existing connection methods such as bolts and clamps. The piston rod of the oil cylinder 4 passes through the movable plate 11 and connects to the force-bearing end of the ejector 1. By controlling the manual oil pump 3, the piston rod of the oil cylinder 4 applies a thrust to the force-bearing end of the ejector 1, thereby driving the ejector 1 to eject the mold core 10. This design simplifies the operation process of unloading the mold core 10, allowing operators to work more safely and efficiently.

[0032] Furthermore, in the working state, if Figure 3 As shown, the axis of the push rod 1 coincides with the axis of the oil cylinder 4, ensuring that the thrust force received by the push rod 1 during movement is along its axis, thereby improving the movement stability and accuracy of the push rod 1. The outer diameter of the ejection end of the push rod 1 is also adapted to the outer diameter of the mold core 10. Figure 2 As shown, the holding ring 2 is formed by two holding hoops connected by bolts. This connection mode is easier to install and disassemble, and makes the hydraulic mold unloader more stable during operation.

[0033] In this embodiment, the following parameters of the oil cylinder can be used:

[0034] (1) Model: Single-acting cylinder LL80 / 350

[0035] (2) Cylinder diameter: ∅ = 80

[0036] (3) Pressure: P = 20 tons

[0037] (4) Oil inlet pressure: P = 6.3Kg / MPa

[0038] In this embodiment, a manual oil pump with the following parameters can be used:

[0039] (1) Model: Manual oil pump SYB-2

[0040] (2) Pressure: P = 7kg / MPa

[0041] (3) Flow rate: Q = 0.7 liters / hour

[0042] In summary, the working principle of the utility model is: the hydraulic unloader is fixed as a whole at the end of the die base body 8 of the lead extruder through the holding ring 2, and the force-bearing end and the unloading end of the push rod 1 are respectively abutted against the oil cylinder 4 and the mold core 10 to be ejected, and then the manual oil pump 3 is operated to make the oil cylinder 4 generate thrust, thereby pushing the push rod 1 to eject the mold core 10 from the mold base body 8. It should be noted that before preparing to eject the mold core 10, the adjusting screw, front screw sleeve, pressure equalizing ring, water spray ring and other components at the outlet end of the lead liquid must be disassembled first. In the process of the push rod 1 pushing the mold core 8, the mold cover will also be ejected and removed together with the mold core 8.

[0043] After the core mold 10 is disassembled, in order to facilitate the next disassembly of the core mold 10 and not affect the normal operation of the lead extruder, the pin 7 at one end of the movable plate 11 can be removed so that the movable plate 11 rotates around the pin 7 at the other end to the side of the lead extruder to avoid obstruction. Alternatively, the pins 7 at both ends can be removed to remove the movable plate 11 and the ejector rod 1. When the core mold 10 needs to be ejected again, the movable plate 11 only needs to be reset to the connecting column 12 to perform the operation.

[0044] The above description is only a specific implementation method of the present utility model. Any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes; all disclosed features, or all methods or steps in the process, except for mutually exclusive features and / or steps, can be combined in any way.

Claims

1. A hydraulic mold unloader, characterized in that: It comprises a connecting mechanism, a hydraulic drive mechanism and a push rod (1); one end of the connecting mechanism is fixedly connected to the hydraulic drive mechanism, and the other end is used to be fixed on a lead extruder; the push rod (1) comprises a demoulding end and a force-bearing end; the hydraulic drive mechanism drives the demoulding end to dismantle the mold core (10) via the force-bearing end.

2. The hydraulic mold unloader according to claim 1, characterized in that: The connecting mechanism comprises a movable plate (11) and a holding ring (2) for fixing on the lead extruder, the movable plate (11) being detachably connected to the holding ring (2), the hydraulic drive mechanism being fixed on the movable plate (11), and the force-bearing end of the ejector rod (1) passing through the holding ring (2) cooperates with the hydraulic drive mechanism to control the movement of the unloading end.

3. The hydraulic mold unloader according to claim 2, characterized in that: Connecting columns (12) facing the hydraulic drive mechanism are symmetrically fixed on both sides of the holding ring (2), and the two ends of the movable plate (11) are movably connected between the connecting columns (12) via column pins (7). When any column pin (7) is removed, the movable plate (11) can rotate around the other column pin (7), and when all the column pins (7) are removed, the movable plate (11) is separated from the holding ring (2).

4. The hydraulic mold unloader according to claim 3, characterized in that: The movable plate (11) has positioning columns (6) integrally formed at both ends thereof, and through holes are provided on the positioning columns (6) and the connecting columns (12), and the column pins (7) are inserted into the through holes of the positioning columns (6) and the connecting columns (12).

5. The hydraulic mold unloader according to claim 4, characterized in that: The hydraulic drive mechanism comprises a manual oil pump (3), an oil cylinder (4) and a base plate (9); the manual oil pump (3) is fixed above the oil cylinder (4) via the base plate (9); one end of the oil cylinder (4) is fixed to the middle of the movable plate (11); the other end is connected to the manual oil pump (3) via a high-pressure hose (5); and the oil cylinder (4) is fixed below the base plate (9).

6. The hydraulic mold unloader according to claim 5, characterized in that: The holding ring (2) is formed by two holding hoops connected by bolts.

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