Device capable of assisting in disassembling extruder screw

Abstract

The utility model discloses a device capable of assisting in disassembling an extruder screw, and belongs to the technical field of extruders. The problem that in the prior art, a screw on an extruder for a film blowing machine is inconvenient to disassemble is solved. The device mainly comprises a moving trolley, an ejector rod and a telescopic cylinder, the moving trolley comprises a base, supporting legs are installed at the bottom of the base, wheels are installed at the bottoms of the supporting legs, a positioning barrel is installed at the front end of the top of the base, a guide plate is installed at the rear end of the positioning barrel, and a guide hole allowing the ejector rod to penetrate through is formed in the middle of the guide plate; the telescopic cylinder is installed on the top of the base and located on the rear side of the guide plate, and the front end of a piston rod of the telescopic cylinder is detachably connected with the rear end of the ejector rod.

Description

TECHNICAL FIELD

[0001] The utility model belongs to extruder technical field, concretely speaking, especially relate to a device of extruder screw rod can be assisted dismounting. BACKGROUND

[0002] The film blowing machine is a kind of equipment that melts plastic particles and then blows into film, and generally includes an extruder.The main function of the extruder is to heat and extrude plastic materials to form the initial shape of the film, which is usually composed of a feed inlet, a screw rod, a heater, a cooler, a filter screen and other components.The screw rod is an important part of the extruder, which pushes the plastic materials forward by rotating and heats the materials to a certain temperature through the heater to make the materials form a flowing state and finally extrude into film.The screw rod on the extruder of the film blowing machine is sometimes dismounted and installed for maintenance inspection or repair and replacement during long-term use.Currently, when dismounting the screw rod on the extruder, an iron rod or a copper rod is usually used to knock the screw rod out of the fixing hole through the screw rod hole of the speed reducer.The screw rod hole of the speed reducer is narrow, and the iron rod or the copper rod is not easy to operate and can easily damage the extruder, reduce the running stability of the equipment, and the position of the screw rod and the screw rod fixing hole is also easily connected together after the plastic particles are melted, so it takes time and effort to dismount the screw rod. SUMMARY

[0003] The utility model aims at providing a device of extruder screw rod can be assisted dismounting to overcome the problem of inconvenient dismounting of the screw rod on the extruder of the film blowing machine in the prior art.

[0004] The utility model is adopted the following technical scheme realizes, a device of extruder screw rod can be assisted dismounting, including moving car, jacks and telescopic cylinder, the moving car includes base, the bottom installation support leg of base, the bottom installation wheel of support leg, the top front end of base installs positioning cylinder, the rear end of positioning cylinder installs guide plate, the middle part of guide plate is equipped with the guide hole that top jack passes, telescopic cylinder installs at the top of base and in the rear side of guide plate, and the front end of piston rod of telescopic cylinder is detachably connected with the rear end of top jack.

[0005] Further, the top of the positioning cylinder is provided with a protrusion, and a fixing hole is formed in the top of the protrusion.

[0006] Further, the bottom of the positioning cylinder is provided with a fixing seat, and the fixing seat is fixedly connected with the base by bolts.

[0007] Further, the front end of the top jack is provided with a threaded head, and the threaded head is threadedly connected with a push block.

[0008] Further, the rear end of the top rod is provided with a slot, the slot is provided with a first insertion hole, the front end of the piston rod of the telescopic cylinder is provided with a plug which can be inserted into the slot, the plug is provided with a second insertion hole matched with the first insertion hole, and the pin is inserted into the first insertion hole and the second insertion hole.

[0009] Further, the telescopic cylinder is fixedly installed on the base through bolts.

[0010] Further, the supporting leg comprises a thick rod and a thin rod, the bottom surface of the thick rod is provided with an expansion hole, the base is fixedly installed on the thick rod, the top of the thin rod is inserted into the expansion hole of the thick rod, and the wheel is installed at the bottom of the thin rod, the lower side of the base is provided with a supporting plate, the supporting plate is fixedly connected with the lower side of the thin rod, the top of the supporting plate is fixedly installed with a screw rod elevator, and the screw rod elevator comprises a screw rod, a lifting nut is sleeved on the screw rod, the lifting nut is fixedly connected with a supporting cylinder, and the top of the supporting cylinder is fixedly connected with the base.

[0011] Further, the input shaft of the screw rod elevator is connected with a handle.

[0012] Further, the telescopic cylinder is an oil cylinder.

[0013] Further, the wheel is a universal wheel.

[0014] Compared with the prior art, the screw rod can be assisted to be disassembled from the extruder, the screw rod can be assisted to be installed on the extruder, the disassembly and installation of the screw rod on the extruder can be accelerated, the labor intensity of workers can be reduced, and the extruder can be prevented from being damaged in the process of disassembly and installation of the screw rod.

[0015] The screw rod can be assisted to be disassembled from the extruder, the screw rod can be assisted to be installed on the extruder, the disassembly and installation of the screw rod on the extruder can be accelerated, the labor intensity of workers can be reduced, and the extruder can be prevented from being damaged in the process of disassembly and installation of the screw rod. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the utility model;

[0017] Figure 2 is a perspective view of the utility model;

[0018] Figure 3 is a perspective view of the utility model in another direction;

[0019] Figure 4 is a use schematic view of the utility model.

[0020] In the figure: 1, mobile car; 2, top rod; 3, telescopic cylinder; 4, base; 5, support leg; 6, wheel; 7, positioning cylinder; 8, guide plate; 9, guide hole; 10, protruding block; 11, fixed hole; 12, piston rod; 13, fixed seat; 14, threaded head; 15, push block; 16, slot; 17, first jack; 18, plug; 19, second jack; 20, pin shaft; 21, thick rod; 22, thin rod; 23, support plate; 24, screw rod elevator; 25, screw rod; 26, lifting nut; 27, support cylinder; 28, handle. DETAILED DESCRIPTION

[0021] In order to make the person skilled in the art better understand the technical scheme in the utility model, the technical scheme in the utility model embodiment will be described clearly and completely below in combination with the drawings in the utility model embodiment. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor should belong to the protection scope of the utility model.

[0022] A device capable of assisting in disassembling extruder screw rod, comprising mobile car 1, top rod 2 and telescopic cylinder 3, the mobile car 1 comprises base 4, four support legs 5 are installed at the bottom of the base 4, the wheels 6 are installed at the bottom of the support legs 5, the wheels 6 adopt universal wheels, the base 4 on the mobile car 1 can be designed as a lifting structure, by making the base 4 liftable, the utility model can be applied to extruders with different installation heights.

[0023] Therefore, the support legs 5 at the bottom of the base 4 are designed as telescopic rod structure, specifically, the support legs 5 comprise thick rod 21 and thin rod 22, the bottom surface of the thick rod 21 is provided with telescopic hole, the base 4 is fixedly installed on the thick rod 21, the top of the thin rod 22 is inserted into the telescopic hole of the thick rod 21, and the wheels 6 are installed at the bottom of the thin rod 22, when the base 4 is lifted, the thick rods 21 on the four support legs 5 move up and down relative to the thin rod 22, and the thin rod 22 is inserted into the thick rod 21.

[0024] The lower side of the base 4 is provided with a support plate 23, the support plate 23 is fixedly connected with the lower side of the thin rod 22, the top of the support plate 23 is fixedly installed with a screw rod lifter 24, the screw rod lifter 24 adopts a nut lifting type worm gear screw rod lifter, the screw rod lifter 24 comprises a screw rod 25, the screw rod 25 is sleeved with a lifting nut 26, the lifting nut 26 is fixedly connected with a support cylinder 27, the top of the support cylinder 27 is fixedly connected with the base 4. The input shaft of the screw rod lifter 24 is connected with a handle 28, the handle 28 adopts a ring handle. When the base 4 needs to be lifted, the handle 28 is manually rotated to rotate the input shaft of the screw rod lifter 24, when the screw rod 25 rotates, since the lifting nut 26 is fixedly connected with the base 4 through the support cylinder 27, the lifting nut 26 rises or falls, thereby driving the base 4 to rise or fall.

[0025] The front end of the top of the base 4 is installed with a positioning cylinder 7, the position of the utility model can be positioned through the positioning cylinder 7, in use, the positioning cylinder 7 is aligned with the connecting cylinder on the screw hole at the rear end of the extruder reduction gearbox, and the connecting cylinder on the screw hole at the rear end of the reduction gearbox is inserted into the positioning cylinder 7, at this time, the guide hole 9 on the guide plate 8 is aligned with the screw of the extruder.

[0026] The rear end of the positioning cylinder 7 is installed with a guide plate 8, the middle part of the guide plate 8 is provided with a guide hole 9 for the top rod 2 to pass through, the guide plate 8 and the guide hole 9 can be arranged to enable the top rod 2 to move horizontally along the guide hole 9, so that the top rod 2 is always aligned with the screw of the extruder.

[0027] The telescopic cylinder 3 is installed on the top of the base 4 and at the rear side of the guide plate 8, the telescopic cylinder 3 adopts an oil cylinder, the piston rod 12 of the telescopic cylinder 3 is aligned with the guide hole 9 of the guide plate 8.

[0028] The front end of the piston rod 12 of the telescopic cylinder 3 is detachably connected with the rear end of the top rod 2, the rear end of the top rod 2 is provided with a slot 16, the slot 16 is provided with a first insertion hole 17, the front end of the piston rod 12 of the telescopic cylinder 3 is provided with a plug 18 which can be inserted into the slot 16, the plug 18 is provided with a second insertion hole 19 which cooperates with the first insertion hole 17, the first insertion hole 17 and the second insertion hole 19 are inserted with a pin shaft 20. When the top rod 2 and the piston rod 12 of the telescopic cylinder 3 are connected, only the plug 18 of the piston rod 12 is inserted into the slot 16 of the top rod 2, and the pin shaft 20 is inserted into the first insertion hole 17 and the second insertion hole 19, the first insertion hole 17 and the second insertion hole 19 are both perforations. In use, the top rod 2 is first inserted into the guide hole 9 of the guide plate 8, and then the plug 18 of the piston rod 12 is inserted into the slot 16 of the top rod 2.

[0029] The top of the positioning cylinder 7 is provided with a mounting lug 10, and a fixing hole 11 is formed in the top of the lug 10. The lug 10 is fixed to the top of the positioning cylinder 7, and the fixing hole 11 is formed in the top of the lug 10. The utility model realizes relative fixation with the extruder, and the utility model is pre-welded with a fixed plate on the upper side of the connecting cylinder on the rear end screw hole of the reducer box of the extruder. The fixed plate is provided with a through hole matched with the fixing hole 11 of the lug 10. When the connecting cylinder of the reducer box is completely inserted into the positioning cylinder 7, the through hole of the fixed plate of the reducer box is aligned with the fixing hole 11 of the lug 10. At this time, a pin shaft is inserted between the through hole of the fixed plate of the reducer box and the fixing hole 11 of the lug 10, so that the movable trolley 1 and the extruder are relatively fixed, and the telescopic cylinder 3 drives the screw rod to move.

[0030] The bottom of the positioning cylinder 7 is provided with a fixing seat 13, and the fixing seat 13 is fixedly connected with the base 4 through bolts. The telescopic cylinder 3 is fixedly installed on the base 4 through bolts.

[0031] The front end of the jacking rod 2 is provided with a threaded head 14, and the threaded head 14 is threadedly connected with a push block 15. The push block 15 is arranged, so that the contact area of the jacking rod 2 and the screw rod is increased. When the screw rod needs to be pushed out of the extruder, the push block 15 is threadedly connected with the threaded head 14. When the screw rod needs to be pulled into the extruder, the push block 15 is separated from the threaded head 14, and the threaded head 14 is threadedly connected with the threaded hole at the rear end of the screw rod. At this time, the piston rod 12 on the telescopic cylinder 3 can pull the jacking rod 2 and the screw rod when the piston rod 12 is retracted.

[0032] The working process of the utility model is as follows:

[0033] When the screw rod needs to be pushed out of the extruder, the push block 15 is threadedly connected with the threaded head 14 of the jacking rod 2, the jacking rod 2 is inserted into the guide hole 9 on the guide plate 8, the plug 18 of the piston rod 12 is inserted into the insertion slot 16 of the jacking rod 2, the pin shaft 20 is inserted into the first insertion hole 17 and the second insertion hole 19, the piston rod 12 and the jacking rod 2 are connected, the movable trolley 1 is moved, the positioning cylinder 7 is aligned with the connecting cylinder on the rear end screw hole of the reducer box of the extruder, the connecting cylinder on the rear end screw hole of the reducer box is completely inserted into the positioning cylinder 7, the through hole of the fixed plate of the reducer box is aligned with the fixing hole 11 of the lug 10, the pin shaft is inserted between the through hole of the fixed plate of the reducer box and the fixing hole 11 of the lug 10, the movable trolley 1 and the extruder are relatively fixed, the telescopic cylinder 3 is started, the piston rod 12 on the telescopic cylinder 3 pushes the jacking rod 2 to move horizontally forward, the jacking rod 2 contacts the screw rod of the extruder and drives the screw rod to move forward, and the pushing effect is realized.

[0034] When the screw needs to be pulled into the extruder, first insert the jack 2 into the guide hole 9 on the guide plate 8, then move the moving car 1, make the positioning cylinder 7 align with the connecting cylinder on the rear end screw hole of the reduction box of the extruder, and make the connecting cylinder on the rear end screw hole of the reduction box completely inserted into the positioning cylinder 7, at this time the perforation on the fixing plate of the reduction box will align with the fixing hole 11 of the protrusion 10, at this time we insert the pin shaft 20 between the perforation on the fixing plate of the reduction box and the fixing hole 11 of the protrusion 10, realize the relative fixation of the moving car 1 and the extruder, at this time the front end of the jack 2 is in the reduction box, then move the jack 2 forward until it contacts with the screw, then rotate the jack 2, make the threaded head 14 of the jack 2 threadedly connected with the threaded hole on the rear end surface of the screw, and then realize the threaded connection of the jack 2 and the screw, then start the telescopic cylinder 3, the piston rod 12 on the telescopic cylinder 3 extends forward until the plug 18 of the piston rod 12 is inserted into the slot 16 of the jack 2, and the pin shaft 20 is inserted into the first insertion hole 17 and the second insertion hole 19 to realize the connection of the piston rod 12 and the jack 2, finally start the telescopic cylinder 3 to make the piston rod 12 retract, the piston rod 12 retracts at the same time to drive the jack 2 and the screw to move backward, and then the screw is pulled into the installation position of the reduction box.

Claims

1. A device that can assist in the disassembly of an extruder screw, characterized in that, The utility model relates to a movable vehicle (1), a top rod (2) and a telescopic cylinder (3), the movable vehicle (1) includes a base (4), the bottom of base (4) is installed with a supporting leg (5), the bottom of supporting leg (5) is installed with a wheel (6), the top of base (4) is installed with a positioning cylinder (7) at the front end, the rear end of positioning cylinder (7) is installed with a guide plate (8), the middle part of guide plate (8) is provided with a guide hole (9) for the top rod (2) to pass through, the telescopic cylinder (3) is installed on the top of base (4) and at the rear side of guide plate (8), the front end of piston rod (12) of telescopic cylinder (3) is detachably connected with the rear end of top rod (2).

2. A device to assist in the removal of an extruder screw according to claim 1, wherein, The top of positioning cylinder (7) is installed with a lug (10), the top of lug (10) is provided with a fixing hole (11).

3. A device to assist in the removal of an extruder screw according to claim 1, wherein, The bottom of positioning cylinder (7) is installed with a fixing base (13), and the fixing base (13) is fixedly connected with base (4) through bolts.

4. A device to assist in the removal of an extruder screw according to claim 1, wherein, The front end of top rod (2) is provided with a threaded head (14), and the threaded head (14) is threadedly connected with a push block (15).

5. A device to assist in the removal of an extruder screw according to claim 1, wherein, The rear end of top rod (2) is provided with a slot (16), the slot (16) is provided with a first insertion hole (17), the front end of piston rod (12) of telescopic cylinder (3) is provided with a plug (18) that can be inserted into the slot (16), the plug (18) is provided with a second insertion hole (19) matched with the first insertion hole (17), and a pin shaft (20) is inserted into the first insertion hole (17) and the second insertion hole (19).

6. A device to assist in the removal of an extruder screw according to claim 1, wherein, The telescopic cylinder (3) is fixedly installed on the base (4) through bolts.

7. A device to assist in the removal of an extruder screw according to claim 1, wherein, The supporting leg (5) includes a thick rod (21) and a thin rod (22), the bottom surface of thick rod (21) is provided with an expansion hole, the base (4) is fixedly installed on the thick rod (21), the top of thin rod (22) is inserted into the expansion hole of thick rod (21), and the wheel (6) is installed at the bottom of thin rod (22), the lower side of base (4) is provided with a supporting plate (23) fixedly connected with the lower side of thin rod (22), the top of supporting plate (23) is fixedly installed with a screw rod elevator (24), the screw rod elevator (24) includes a screw rod (25), the screw rod (25) is sleeved with a lifting nut (26), the lifting nut (26) is fixedly connected with a supporting cylinder (27), and the top of supporting cylinder (27) is fixedly connected with base (4).

8. A device to assist in the removal of an extruder screw according to claim 7, wherein, The input shaft of screw rod elevator (24) is connected with a handle (28).

9. A device to assist in the removal of an extruder screw according to claim 1, wherein, The telescopic cylinder (3) is an oil cylinder.

10. A device to assist in dismounting an extruder screw according to any one of claims 1-9, characterized in that, The wheel (6) is a universal wheel.

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