Extruder pin taking-out device

Abstract

The utility model discloses a device for taking out a pin of an extruder, which relates to the technical field of extruder maintenance equipment and comprises a fixing bolt, a jacking component and a cylindrical seat capable of being divided into a plurality of sections, the jacking assembly comprises a fixing base, a chuck, connecting rods, a lifting plate and a jacking device, the fixing base comprises an arc-shaped bottom plate, supporting rods and a top plate, the arc-shaped bottom plate and the top plate are connected through the four supporting rods, and the lifting plate and the chuck are located on the upper side and the lower side of the top plate respectively and connected through the two connecting rods; the bottom of the jacking device is fixed to the top plate, and the output end of the jacking device is fixedly connected with the lifting plate. A clamping groove matched with a screw of the fixing bolt is formed in the chuck, the inner diameter of the cylindrical seat is matched with the outer diameter of the extruder, and two annular guide rails are symmetrically arranged on the outer wall of the cylindrical seat; the jacking assembly of the device can move along the annular guide rail on the cylindrical seat, and pins on the side portion or the lower portion of the extruder can be taken down more freely.

Description

Technical Field

[0001] This utility model relates to the technical field of extruder maintenance equipment, specifically to an extruder pin removal device. Background Technology

[0002] After the extruder is heated, the pin expands and fits too tightly with the machine body, making replacement time-consuming and laborious, and difficult to remove quickly.

[0003] Chinese patent CN212044476U discloses an extruder screw pin remover, comprising: a pin inserted into the extruder screw with a threaded hole at its outer end; a lifting bracket with a locking hole on its bottom surface and lifting wings on both sides of its top; a fixing bolt for passing through the locking hole and locking between the threaded hole of the pin and the lifting bracket; and a lifting element supported between the extruder screw and the lifting wings for pulling the pin out of the extruder screw. Since the extruder has several pins evenly distributed on it, this remover is difficult to install and has poor practicality when it is necessary to remove pins from the side or bottom of the extruder.

[0004] Therefore, there is an urgent need to develop a new type of extruder pin removal device. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing an extruder pin removal device.

[0006] The technical solution of this utility model is: an extruder pin removal device, including a fixing bolt for threaded connection with the pin, a lifting assembly and a cylindrical seat that can be divided into multiple sections;

[0007] The lifting assembly includes a fixed base, a chuck, a connecting rod, a lifting plate, and a lifting device. The fixed base includes an arc-shaped base plate, a support rod, and a top plate. The arc-shaped base plate and the top plate are connected by multiple support rods. The lifting plate and the chuck are located on the upper and lower sides of the top plate, respectively, and are connected by multiple connecting rods. The connecting rod slides vertically through the top plate. The bottom of the lifting device is fixed to the top plate, and its output end is fixedly connected to the lifting plate. The chuck has a slot adapted to the fixing bolt screw, and the arc-shaped base plate has a clearance opening corresponding to the fixing bolt.

[0008] The inner diameter of the cylindrical seat is adapted to the outer diameter of the extruder, and an annular guide rail is provided on its outer wall. The cylindrical seat also has several openings corresponding to the pin holes. The arc-shaped base plate is slidably connected to the annular guide rail, and the slot, clearance opening and opening are located on the same vertical plane.

[0009] Preferably, the cylindrical seat is divided into two sections, namely a first arc-shaped plate and a second arc-shaped plate; one end of the first arc-shaped plate and one end of the second arc-shaped plate are hinged together, and the other ends of the two are connected by fastening bolts.

[0010] Preferably, the outer wall of the cylindrical seat is provided with two symmetrically arranged annular guide rails, and the left and right sides of the arc-shaped base plate are respectively slidably connected to the corresponding annular guide rails.

[0011] Preferably, the top plate is provided with a plurality of guide sleeves that are slidably connected to the connecting rod.

[0012] Preferably, the jacking device is a hydraulic jack.

[0013] Preferably, the bottom of the lifting device is fixed at the center of the top plate, and there are two connecting rods, which are symmetrically arranged with the lifting device as the center.

[0014] Preferably, the screw of the fixing bolt is adapted to the threaded hole at the end of the pin.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] The lifting assembly of this device can move along the annular guide rail on the cylindrical base, allowing for easier removal of pins from the side or bottom of the extruder. This reduces maintenance time and labor intensity for workers, effectively improving the practicality of the device. Attached Figure Description

[0017] Figure 1 This is a perspective view of the lifting component of this utility model;

[0018] Figure 2 This is a three-dimensional view of the cylindrical base;

[0019] Figure 3 This is a structural diagram of the extruder and fixing bolts.

[0020] In the diagram: 1. Extruder, 101. Pin hole, 2. Fixing bolt, 3. Arc-shaped base plate, 301. Clearance opening, 4. Support rod, 5. Top plate, 6. Lifting plate, 7. Connecting rod, 8. Chuck, 801. Slot, 9. Guide sleeve, 10. Lifter, 11. First arc-shaped plate, 12. Second arc-shaped plate, 13. Annular guide rail, 14. Opening. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1

[0022] Reference Figure 1 and 3 As shown, an extruder 1 pin removal device includes a fixing bolt 2 for threaded connection with the pin, a lifting assembly, and a cylindrical seat.

[0023] The lifting assembly includes a fixed base, a chuck 8, connecting rods 7, a lifting plate 6, and a lifting device 10. The fixed base includes an arc-shaped base plate 3, support rods 4, and a top plate 5. The arc-shaped base plate 3 and the top plate 5 are connected by four support rods 4. The lifting plate 6 and the chuck 8 are located on the upper and lower sides of the top plate 5, respectively, and are connected by two connecting rods 7. The connecting rods 7 slide vertically through the top plate 5. The bottom of the lifting device 10 is fixed at the center of the top plate 5, and its output end is fixedly connected to the lifting plate 6. Specifically, the two connecting rods 7 are symmetrically arranged with the lifting device 10 as the center. The chuck 8 has a slot 801 adapted to the screw of the fixing bolt 2, and the arc-shaped base plate 3 has a clearance opening 301 corresponding to the fixing bolt 2. More specifically, in this embodiment, the lifting device 10 is a hydraulic jack, and the top plate 5 has two guide sleeves 9 that are slidably connected to the connecting rods 7.

[0024] The cylindrical seat can be divided into three sections. Its inner diameter is adapted to the outer diameter of the extruder 1. An annular guide rail 13 is provided on its outer wall. Several openings 14 corresponding to the pin holes 101 are opened on the cylindrical seat. The arc-shaped bottom plate 3 is slidably connected to the annular guide rail 13. The slot 801, the clearance port 301 and the opening 14 are located on the same vertical plane.

[0025] In addition, the screw of fixing bolt 2 is adapted to the threaded hole at the end of the pin.

[0026] In use, assemble the cylindrical seat onto the extruder 1, ensuring that the opening 14 and the pin hole 101 to be removed are on the same vertical plane. First, remove the plug from the first pin hole 101, and tighten the fixing bolt 2 into the threaded hole at the end of the pin. Then, slide the lifting assembly along the annular guide rail 13, causing the screw of the fixing bolt 2 to engage in the slot 801. Subsequently, operate the hydraulic lifting plate 6 to lift the pin, thereby driving the chuck 8 through the connecting rod 7 to pull out the pin. Repeat the above operation until all the pins in one ring are removed.

[0027] After all the pins in one ring have been removed, move the cylindrical seat to the other ring of pins until all the pins on the extruder 1 have been removed. Example 2

[0028] The difference between this embodiment and Embodiment 1 lies in the structure of the cylindrical seat, specifically:

[0029] Reference Figure 2 As shown, the cylindrical seat in this embodiment is divided into two sections, namely a first arc plate 11 and a second arc plate 12; one end of the first arc plate 11 and one end of the second arc plate 12 are hinged together, and the other ends of the two are connected by fastening bolts.

[0030] More specifically, the outer wall of the cylindrical base is provided with two symmetrically arranged annular guide rails 13, and the left and right sides of the arc-shaped base plate 3 are respectively slidably connected to the corresponding annular guide rails 13.

[0031] In use, the first arc plate 11 and the second arc plate 12 are mounted onto the extruder 1, ensuring that the opening 14 and the pin hole 101 to be removed are on the same vertical plane. After adjustment, the first arc plate 11 and the second arc plate 12 are locked in place using the fastening bolts. First, remove the plug from the first pin hole 101 and tighten the fixing bolt 2 into the threaded hole at the end of the pin. Then, slide the lifting assembly along the annular guide rail 13, causing the screw of the fixing bolt 2 to engage in the slot 801. Subsequently, operate the hydraulic lifting plate 6 to pull out the pin via the connecting rod 7 and the chuck 8. Repeat the above operation until all the pins in a circle are removed.

[0032] After all the pins in one ring are removed, the first arc plate 11 and the second arc plate 12 are then attached to the other ring of pins until all the pins on the extruder 1 are removed.

[0033] In summary, the lifting assembly of this device can move along the annular guide rail 13 on the cylindrical seat, allowing for more convenient removal of the pins on the side or bottom of the extruder 1. This reduces maintenance time and labor intensity for workers, effectively improving the practicality of the device.

[0034] This utility model is not limited to the above-described embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model, and the changed content still falls within the protection scope of this utility model.

Claims

1. An extruder pin removal device, comprising a fixing bolt for threaded connection with the pin, characterized in that: It also includes a lifting assembly and a cylindrical base that can be divided into multiple sections; The lifting assembly includes a fixed base, a chuck, a connecting rod, a lifting plate, and a lifting device. The fixed base includes an arc-shaped base plate, a support rod, and a top plate. The arc-shaped base plate and the top plate are connected by multiple support rods. The lifting plate and the chuck are located on the upper and lower sides of the top plate, respectively, and are connected by multiple connecting rods. The connecting rod slides vertically through the top plate. The bottom of the lifting device is fixed to the top plate, and its output end is connected to the lifting plate. The chuck has a slot adapted to the fixing bolt screw, and the arc-shaped base plate has a clearance opening corresponding to the fixing bolt. The inner diameter of the cylindrical seat is adapted to the outer diameter of the extruder, and an annular guide rail is provided on its outer wall. The cylindrical seat also has several openings corresponding to the pin holes. The arc-shaped base plate is slidably connected to the annular guide rail, and the slot, clearance opening and opening are located on the same vertical plane.

2. The extruder pin removal device according to claim 1, characterized in that: The cylindrical seat is divided into two sections, namely a first arc plate and a second arc plate; one end of the first arc plate and one end of the second arc plate are hinged together, and the other ends of the two are connected by fastening bolts.

3. The extruder pin removal device according to claim 1, characterized in that: The outer wall of the cylindrical seat is provided with two symmetrically arranged annular guide rails, and the left and right sides of the arc-shaped base plate are respectively slidably connected to the corresponding annular guide rails.

4. The extruder pin removal device according to claim 1, characterized in that: The top plate is provided with multiple guide sleeves that are slidably connected to the connecting rod.

5. The extruder pin removal device according to claim 1, characterized in that: The lifting device is a hydraulic jack.

6. The extruder pin removal device according to claim 1, characterized in that: The bottom of the lifting device is fixed at the center of the top plate, and there are two connecting rods, which are symmetrically arranged with the lifting device as the center.

7. The extruder pin removal device according to claim 1, characterized in that: The screw of the fixing bolt is adapted to the threaded hole at the end of the pin.

Images