CN116039021A

CN116039021A - Injection molding machine convenient to annotate plastic bucket unloading

Info

Publication number: CN116039021A
Application number: CN202310022583.7A
Authority: CN
Inventors: 李科
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-01-08
Filing date: 2023-01-08
Publication date: 2023-05-02

Abstract

The invention relates to an injection molding machine, in particular to an injection molding machine convenient for blanking of an injection plastic barrel. The invention aims to provide an injection molding machine convenient for blanking an injection molding barrel. The invention provides an injection molding machine convenient for blanking an injection molding barrel, which comprises a support frame, a first mold, an injection molding machine and the like, wherein the top of the support frame is connected with the first mold, one side of the top of the support frame is connected with the injection molding machine for injecting plasticizing raw materials, and a discharge hole of the injection molding machine is communicated with the first mold. According to the invention, the air cylinder is used for extruding the rotating plate to rotate, so that the vent pipe is abutted with the butt joint hole, and air in the air cylinder is extruded by the connecting frame and then enters a space between the glue barrel and the second die through the vent pipe, so that the influence of atmospheric pressure on the discharging of the glue barrel can be avoided, and the glue barrel can be conveniently taken down by people.

Description

Injection molding machine convenient to annotate plastic bucket unloading

Technical Field

The invention relates to an injection molding machine, in particular to an injection molding machine convenient for blanking of an injection plastic barrel.

Background

Injection molding machines are also known as injection molding machines or injection molding machines. It is a main forming equipment for making thermoplastic plastics or thermosetting plastics into various shaped plastic products by using plastic forming mould. The device is divided into vertical type, horizontal type and full-electric type. The injection molding machine heats the plastic and applies high pressure to the molten plastic to fill the mold cavity.

At present, when the existing injection molding machine is used for producing the rubber barrel, the rubber barrel after injection molding can be clung to the inner wall of the mold, and because the inside of the mold is sealed, when people take out the rubber barrel, the space between the rubber barrel and the mold can be increased, but air cannot enter the space between the rubber barrel and the mold, and under the action of atmospheric pressure, people are difficult to take out the rubber barrel after injection molding.

In view of the foregoing, there is a strong need for an injection molding machine that facilitates the feeding of plastic barrels, and solves the above problems.

Disclosure of Invention

In order to overcome the defect that the plastic barrel after injection molding is difficult to take out under the action of atmospheric pressure when the traditional injection molding machine is used for producing the plastic barrel, the invention aims to provide the injection molding machine convenient for blanking the plastic barrel.

The invention is realized by the following technical approaches:

the utility model provides an injection molding machine convenient to annotate plastic bucket unloading, including the support frame, first mould, injection molding machine and second mould, the support frame top is connected with first mould, support frame top one side is connected with the injection molding machine that is used for injecting plasticizing raw materials, the discharge gate and the first mould intercommunication of injection molding machine, one side sliding type that the injection molding machine was kept away from at the support frame top is connected with the second mould that is used for gluey bucket fashioned, can contact with first mould when the second mould removes, it has the buffer hole to open on the second mould, still including electric putter, pressing mechanism and chucking mechanism, be connected with at least one electric putter on the support frame, electric putter's telescopic link is connected with the second mould, be provided with the pressing mechanism that is used for ventilating on the second mould, be provided with the pressing mechanism that is used for extrusion gas on the support frame, the second mould is provided with the chucking mechanism that is used for fixing.

Further, the pressing mechanism comprises a vent pipe, a connecting block, a rotating plate and a first elastic piece, the vent pipe is connected inside the second die in a sliding mode, the vent pipe is contacted with the second die, the second die blocks the vent pipe, one side of the second die is connected with the connecting block at intervals, the rotating plate is connected between the adjacent connecting blocks in a rotating mode, the opposite side of the rotating plate is connected with the vent pipe in a sliding mode, and the first elastic piece is connected between the rotating plate and the second die.

Further, the pressurizing mechanism comprises a connecting frame, an air cylinder, a second elastic piece and a sliding block, the connecting frame is connected to the supporting frame, the air cylinder is connected to the connecting frame in a sliding mode, the rotating plate is in contact with the air cylinder, the second elastic piece is connected between the air cylinder and the connecting frame, the sliding block is connected to the bottom of the air cylinder, the sliding block is connected with the supporting frame in a sliding mode, a butt joint hole is formed in the air cylinder, and the butt joint hole is aligned with the air pipe.

Further, the clamping mechanism comprises a clamping block, a limiting frame and a third elastic piece, the clamping block is connected to the air cylinder and aligned with the buffer hole, one side, close to the clamping block, of the second die is slidably connected with the limiting frame, the clamping block clamps the limiting frame, the limiting frame is contacted with the vent pipe when moving, and the third elastic piece is connected between the limiting frame and the second die.

Further, the automatic glue barrel pushing device comprises an ejection mechanism for pushing out the glue barrel, the ejection mechanism comprises a movable rod, an annular push plate, telescopic long rods and a lantern ring, the movable rod corresponding to the electric push rod in number is connected to the first die in a sliding mode, the annular push plate is connected between the left sides of the movable rod, the telescopic long rods are connected to the back sides of the movable rod, the lantern ring is connected to the telescopic rods of the electric push rod, and the lantern ring is connected with the adjacent telescopic long rods respectively.

Further, still including being used for scribbling the first spraying mechanism of degum agent to first mould inner wall, first spraying mechanism is including the mount, the stock solution bucket, the lid, the pump, first hose and annular sponge piece, be connected with the mount on the support frame, be connected with the stock solution bucket on the mount, be connected with the lid on the stock solution bucket, be connected with the pump on the mount, pump and stock solution bucket intercommunication, be connected with first hose and intercommunication on the pump, first hose is connected with adjacent movable rod, annular push pedal external connection has annular sponge piece, annular sponge piece and first mould inner wall contact, annular push pedal outside interval has the liquid outlet, open inside the liquid passageway with the movable rod of first hose connection, liquid passageway and the inside intercommunication of annular push pedal, first hose and liquid passageway intercommunication.

Further, the second spraying mechanism is used for spraying the degumming agent to the second die and comprises a connecting ring, an annular spray pipe and a second hose, wherein one side, close to the second die, of the outer portion of the first die is connected with the connecting ring at intervals, the annular spray pipe is connected between the connecting rings, and the second hose is connected and communicated between the annular spray pipe and the first hose.

Further, the inside of the annular push plate is of a hollow structure.

The invention provides an injection molding machine convenient for blanking an injection molding barrel, which has the advantages that:

1. according to the invention, the air cylinder is used for extruding the rotating plate to rotate, so that the vent pipe is abutted with the butt joint hole, and air in the air cylinder is extruded by the connecting frame and then enters a space between the glue barrel and the second die through the vent pipe, so that the influence of atmospheric pressure on the discharging of the glue barrel can be avoided, and the glue barrel can be conveniently taken down by people.

2. According to the invention, the annular push plate moves leftwards, so that the annular push plate can push out the rubber barrel adsorbed on the inner wall of the first die, and people can conveniently take out the rubber barrel adsorbed on the inner wall of the first die.

3. According to the invention, the degelling agent is added into the liquid storage barrel, the annular sponge block can be used for smearing the degelling agent on the inner wall of the first die by starting the pumping pump, and the annular spray pipe can be used for spraying the degelling agent on the second die, so that the glue barrel can conveniently fall off from the first die or the second die.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic cross-sectional perspective view of the present invention.

Fig. 3 is a schematic perspective view of the pressing mechanism of the present invention.

Fig. 4 is a schematic perspective view of the pressurizing mechanism of the present invention.

Fig. 5 is a schematic perspective view of the components such as the vent pipe, the rotary plate and the inflator of the present invention.

Fig. 6 is a schematic perspective view of the clamping mechanism of the present invention.

Fig. 7 is a schematic perspective view of an ejector mechanism according to the present invention.

Fig. 8 is a schematic perspective view of a first spraying mechanism according to the present invention.

Fig. 9 is a schematic perspective view of a second spraying mechanism according to the present invention.

Part names and serial numbers in the figure: 1_support, 2_first mold, 3_injection molding machine, 4_second mold, 41_buffer, 5_electric ram, 6_press, 61_vent, 62_connection block, 63_rotation plate, 64_first spring, 7_press, 71_connection frame, 72_air cylinder, 73_second spring, 74_slider, 75_interface, 8_clamp, 81_clamp, 82_limit, 83_third spring, 9_ejector, 91_movable bar, 92_push plate, 93_telescoping long bar, 94_collar, 10_first spray, 101_mount, 102_reservoir, 1021_lid, 103_pump, 104_first hose, 105_annular sponge, 106_liquid outlet, 107_liquid channel, 11_second spray, 1101_connection ring, 1102_annular nozzle, 1103_second hose.

Detailed Description

The invention is further elucidated below in conjunction with the drawings of the specification, and embodiments of the invention are given in conjunction with the drawings of the specification.

Example 1

1-6, see the injection molding machine of plastic barrel unloading convenient to, including support frame 1, first mould 2, injection molding machine 3, second mould 4, electric putter 5, push down mechanism 6, pressurizing mechanism 7 and chucking mechanism 8, be connected with first mould 2 in the middle of the support frame 1 top, there is injection molding machine 3 support frame 1 top right side bolt, open through injection molding machine 3, can pour into after the raw materials heating plasticization, the discharge gate and the first mould 2 intercommunication of injection molding machine 3, support frame 1 top left side slidingtype is connected with second mould 4, the raw materials after the heating plasticization is through the shaping in the confined space, can form the plastic barrel, can contact with first mould 2 when second mould 4 moves rightwards, the buffer hole 41 is opened to second mould 4 left side lower part, both sides all bolt have electric putter 5 around support frame 1 top, the telescopic link of two electric putter 5 all is connected with second mould 4, be provided with push down mechanism 6 on the second mould 4, support frame 1 left side upper portion is provided with pressurizing mechanism 7, second mould 4 left side lower part is provided with chucking mechanism 8.

Referring to fig. 3, the pressing mechanism 6 includes a vent pipe 61, a connecting block 62, a rotating plate 63 and a first elastic member 64, the inside sliding connection of the second mold 4 has the vent pipe 61, after air enters the space between the glue barrel and the second mold 4 through the vent pipe 61, the air can avoid the atmospheric pressure to affect the blanking of the glue barrel, the right end of the vent pipe 61 is an inclined plane, the right end of the vent pipe 61 contacts with the second mold 4, the second mold 4 blocks the right end of the vent pipe 61, the front and rear sides of the upper part of the left side of the second mold 4 are connected with a group of connecting blocks 62, the number of each group of connecting blocks 62 is two, each group of connecting blocks 62 is connected with the rotating plate 63 in a rotating manner, the opposite sides of the two rotating plates 63 are connected with the vent pipe 61 in a sliding manner, and the opposite sides of the right sides of the two rotating plates 63 are connected with the first elastic member 64 between the opposite sides of the two rotating plates 63 and the second mold 4, and the first elastic member 64 is an elastic rope.

Referring to fig. 4, 5 and 6, the pressurizing mechanism 7 includes a connecting frame 71, an air cylinder 72, a second elastic member 73 and a sliding block 74, the connecting frame 71 is welded at the upper part of the left side of the supporting frame 1, the air cylinder 72 is slidingly connected at the right side of the upper part of the connecting frame 71, air in the air cylinder 72 is extruded to enter the ventilation pipe 61, the opposite sides of the left sides of the two rotating plates 63 are contacted with the right side of the air cylinder 72, the second elastic member 73 is connected between the left side of the air cylinder 72 and the connecting frame 71, the second elastic member 73 is a spring, the sliding block 74 is connected at the bottom of the air cylinder 72, the sliding block 74 is slidingly connected with the supporting frame 1, the middle part of the right side of the air cylinder 72 is provided with a butt hole 75, and the butt hole 75 is aligned with the ventilation pipe 61.

Referring to fig. 6, the clamping mechanism 8 includes a clamping block 81, a limiting frame 82 and a third elastic member 83, the lower right side of the air cylinder 72 is connected with the clamping block 81, the clamping block 81 is aligned with the buffer hole 41, the lower left side of the second mold 4 is slidably connected with the limiting frame 82, the air pipe 61 is clamped by the limiting frame 82, the air pipe 61 can be limited, the clamping block 81 clamps the limiting frame 82, the limiting frame 82 contacts with the air pipe 61 when moving upwards, the third elastic member 83 is connected between the limiting frame 82 and the lower left side of the second mold 4, and the third elastic member 83 is a spring.

In the initial state, as the clamping block 81 clamps the limiting frame 82, the third elastic piece 83 is in a compressed state, when people need to use the injection molding machine which is convenient for the blanking of the injection molding barrel, firstly, raw materials are added into the injection molding machine 3, then the electric push rod 5 is started, the telescopic rod of the electric push rod 5 is controlled to be shortened, the second mold 4 is driven to move rightwards, the second mold 4 is contacted with the first mold 2, meanwhile, the second mold 4 drives the connecting block 62, the rotating plate 63 and the limiting frame 82 to move rightwards, the rotating plate 63 is separated from the air cylinder 72, when the limiting frame 82 is separated from the clamping block 81, the third elastic piece 83 drives the limiting frame 82 to move upwards, the limiting frame 82 is contacted with the air pipe 61, thus the limiting frame 82 clamps the air pipe 61, after the second mold 4 is contacted with the first mold 2, the electric push rod 5 is closed, the second mould 4 and the first mould 2 form a sealed space, the injection moulding machine 3 is started, the injection moulding machine 3 heats and plasticizes the raw materials, then the raw materials are injected into the sealed space, when a proper amount of heated and plasticised raw materials are injected into the sealed space, the injection moulding machine 3 is closed, the heated and plasticised raw materials are formed in the sealed space, when the heated and plasticised raw materials form a glue barrel in the sealed space, the electric push rod 5 is started, the expansion rod of the electric push rod 5 is controlled, thereby driving the second mould 4 to move leftwards and reset, the second mould 4 is separated from the first mould 2, thereby driving the second mould 4 to drive the glue barrel to move leftwards, simultaneously the second mould 4 drives the connecting block 62, the rotating plate 63 and the limiting frame 82 to move leftwards and reset, the rotating plate 63 is contacted with the air cylinder 72, when the limiting frame 82 is contacted with the clamping block 81, the clamping block 81 is extruded by the limiting frame 82 to move downwards and reset, the third elastic piece 83 is compressed, the limiting frame 82 is separated from the vent pipe 61, so that the limiting frame 82 releases the vent pipe 61, then the telescopic rod of the electric push rod 5 is controlled to extend continuously, so that the second die 4, the rubber barrel, the connecting block 62 and the rotating plate 63 are driven to move leftwards, at the moment, the clamping block 81 enters the buffer hole 41, the air barrel 72 is extruded to rotate, the first elastic piece 64 deforms, the rotating plate 63 pulls the vent pipe 61 to move leftwards, the vent pipe 61 is abutted with the abutting hole 75, the right end of the vent pipe 61 is separated from the second die 4, the second die 4 is prevented from blocking the right end of the vent pipe 61, when the connecting block 62 and the rotating plate 63 move leftwards continuously, the rotating plate 63 extrudes the air barrel 72 and the sliding block 74, the second elastic piece 73 compresses, air in the air barrel 72 is extruded by the connecting frame 71 and enters a space between the rubber barrel and the second die 4, so that the air pressure between the glue barrel and the second mould 4 is increased, then people can take down the glue barrel from the second mould 4, air can assist the glue barrel to carry out blanking, in the blanking process, the air pressure between the glue barrel and the second mould 4 can be slowly reduced to be consistent with the external atmospheric pressure, the telescopic rod of the electric push rod 5 is controlled to be shortened, thereby driving the second mould 4, the connecting block 62 and the rotating plate 63 to move rightwards for resetting, when the rotating plate 63 is separated from the air barrel 72, the second elastic piece 73 is restored to the original shape, the second elastic piece 73 drives the air barrel 72 and the sliding block 74 to move rightwards for resetting, so that the air barrel 72 is contacted with the rotating plate 63, when the second mould 4, the connecting block 62 and the rotating plate 63 continue to move rightwards for resetting, at the moment, the clamping block 81 can leave from the buffer hole 41, and the rotating plate 63 is separated from the air barrel 72 again, the first elastic piece 64 is restored to the original shape, the first elastic member 64 drives the rotating plate 63 to reversely reset, so that the rotating plate 63 contacts with the air cylinder 72, and meanwhile, the rotating plate 63 pulls the vent pipe 61 to move rightwards for resetting, so that the vent pipe 61 is separated from the butt joint hole 75, the right end of the vent pipe 61 contacts with the second die 4, the second die 4 is further enabled to block the right end of the vent pipe 61 again, and then the electric push rod 5 is closed.

Example 2

On the basis of embodiment 1, see fig. 1, 2 and 7, still including ejection mechanism 9, ejection mechanism 9 is including movable rod 91, annular push pedal 92, flexible stock 93 and lantern ring 94, the front and back both sides on first mould 2 right side all are connected with movable rod 91 in the slip, be connected with annular push pedal 92 between two movable rod 91 left sides, can promote the glue bucket adsorbed on first mould 2 inner wall through annular push pedal 92 left movement, annular push pedal 92 is inside to be hollow structure, the right side that two movable rods 91 were on the side of facing away from all is connected with flexible stock 93, all be connected with lantern ring 94 on the telescopic link of two electric putter 5, the lantern ring 94 of front and back both sides is connected with flexible stock 93 left side of front and back both sides respectively.

When the telescopic rod of the electric push rod 5 is shortened, the telescopic rod of the electric push rod 5 drives the sleeve ring 94 to move rightwards, so that the telescopic long rod 93 is contracted, when the telescopic long rod 93 cannot be contracted again, the sleeve ring 94 extrudes the telescopic long rod 93 to move rightwards, so that the movable rod 91 and the annular push plate 92 are driven to move rightwards, the annular push plate 92 is contacted with the inner right wall of the first die 2, when the telescopic rod of the electric push rod 5 is extended, the second die 4 is driven to move leftwards to reset, the second die 4 is separated from the first die 2, at the moment, a glue barrel can be adsorbed on the inner wall of the first die 2, meanwhile, the telescopic rod of the electric push rod 5 drives the sleeve ring 94 to move leftwards to reset, so that the telescopic long rod 93 is stretched, when the telescopic long rod 93 cannot be stretched again, the sleeve ring 94 drives the telescopic long rod 93 to move leftwards to reset, so that the movable rod 91 and the annular push plate 92 are driven to move leftwards to reset, the annular push plate 92 is separated from the inner right wall of the first die 2, so that the annular push plate 92 pushes out the glue barrel adsorbed on the inner wall of the first die 2, and people can be conveniently taken out.

Referring to fig. 1, 2 and 8, the first spraying mechanism 10 is further included, the first spraying mechanism 10 includes a fixing frame 101, a liquid storage barrel 102, a cover 1021, a pump 103, a first hose 104 and an annular sponge block 105, the right side of the upper portion of the supporting frame 1 is connected with the fixing frame 101, the liquid storage barrel 102 is bolted on the fixing frame 101, the cover 1021 is screwed on the upper portion of the front side of the liquid storage barrel 102, the pump 103 is bolted on the right side of the fixing frame 101, the pump 103 is communicated with the liquid storage barrel 102, the pump 103 is connected with the first hose 104 and is communicated with the pump 103, the upper end of the first hose 104 is connected with a movable rod 91 on the front side, the annular push plate 92 is externally connected with the annular sponge block 105, the annular sponge block 105 can be used for smearing the degumming agent on the inner wall of the first die 2, the annular sponge block 105 is contacted with the inner wall of the first die 2, a liquid outlet hole 106 is spaced on the outer portion of the annular push plate 92, a liquid channel 107 is formed in the inner portion of the movable rod 91 on the front side, the liquid channel 107 is communicated with the inner portion of the annular push plate 92, and the first hose 104 is communicated with the liquid channel 107.

When people need to use the injection molding machine convenient for blanking the plastic injection barrel, the cover 1021 can be rotated and twisted open, then the degumming agent is added into the liquid storage barrel 102, then the cover 1021 is reversely twisted back, when the telescopic rod of the electric push rod 5 drives the lantern ring 94 to move rightwards, the pumping pump 103 can be started, the pumping pump 103 pumps the degumming agent in the liquid storage barrel 102 into the liquid channel 107 through the first hose 104, thereby the degumming agent flows into the annular push plate 92 through the liquid channel 107, further the degumming agent in the annular push plate 92 flows out on the annular sponge block 105 through the liquid outlet 106, when the annular push plate 92 moves rightwards, the annular push plate 92 drives the annular sponge block 105 to move rightwards, the annular sponge block 105 is smeared on the inner wall of the first die 2, when the annular push plate 92 moves rightwards, the annular push plate 92 drives the annular sponge block 105 to move leftwards to reset, and when the annular push plate 92 pushes out the adhesive barrel adsorbed on the inner wall of the first die 2, and the degumming agent can fall off the inner wall of the first die 2 under the action of the auxiliary die 2.

Referring to fig. 1, 2 and 9, the device further comprises a second spraying mechanism 11, the second spraying mechanism 11 comprises a connecting ring 1101, annular spraying pipes 1102 and a second hose 1103, the connecting ring 1101 is connected to the left side of the outer portion of the first die 2 at intervals, the annular spraying pipes 1102 are connected between the connecting rings 1101, the degelling agent is sprayed on the second die 4 through the annular spraying pipes 1102, and the second hose 1103 is connected and communicated between the front side of the annular spraying pipes 1102 and the first hose 104.

When the pump 103 is turned on, part of the degelling agent in the first hose 104 flows into the annular spraying pipe 1102 through the second hose 1103, so that the annular spraying pipe 1102 sprays the part of the degelling agent, when the second mold 4 passes through the annular spraying pipe 1102 and enters the first mold 2, the annular spraying pipe 1102 sprays the part of the degelling agent onto the second mold 4, when the pump 103 is turned off, the annular spraying pipe 1102 stops spraying the degelling agent, and when people take down the glue barrel from the second mold 4, under the action of the degelling agent, people can be assisted to take down the glue barrel from the second mold 4.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made hereto without departing from the spirit and principles of the present invention.

Claims

1. Injection molding machine convenient to annotate plastic bucket unloading, including support frame (1), first mould (2), injection molding machine (3) and second mould (4), support frame (1) top is connected with first mould (2), support frame (1) top one side is connected with injection molding machine (3) that are used for injecting plasticizing raw materials, the discharge gate and the first mould (2) intercommunication of injection molding machine (3), one side sliding type that is kept away from injection molding machine (3) at support frame (1) top is connected with second mould (4) that are used for gluey bucket shaping, can contact with first mould (2) when second mould (4) remove, it has slow punch hole (41) to open on second mould (4), a serial communication port, still including electric putter (5), pressing mechanism (6), pressing mechanism (7) and chucking mechanism (8), be connected with at least one electric putter (5) on support frame (1), the telescopic link and second mould (4) of electric putter (5) are provided with pressing mechanism (6) that are used for ventilating, be provided with on support frame (1) pressing mechanism (7) and second mould (8) are used for fixing chucking mechanism (8).

2. The injection molding machine convenient for plastic barrel blanking according to claim 1, characterized in that the pressing mechanism (6) comprises a vent pipe (61), a connecting block (62), a rotating plate (63) and a first elastic piece (64), the vent pipe (61) is connected inside the second mold (4) in a sliding manner, the vent pipe (61) is contacted with the second mold (4), the second mold (4) blocks the vent pipe (61), one side of the second mold (4) is connected with the connecting block (62) at intervals, the rotating plate (63) is connected between the adjacent connecting blocks (62) in a rotating manner, the opposite side of the rotating plate (63) is connected with the vent pipe (61) in a sliding manner, and the first elastic piece (64) is connected between the rotating plate (63) and the second mold (4).

3. The injection molding machine convenient for blanking of plastic injection barrels according to claim 2, characterized in that the pressurizing mechanism (7) comprises a connecting frame (71), an air cylinder (72), a second elastic piece (73) and a sliding block (74), the connecting frame (71) is connected to the supporting frame (1), the air cylinder (72) is connected to the connecting frame (71) in a sliding mode, the rotating plate (63) is in contact with the air cylinder (72), the second elastic piece (73) is connected between the air cylinder (72) and the connecting frame (71), the sliding block (74) is connected to the bottom of the air cylinder (72), the sliding block (74) is connected with the supporting frame (1) in a sliding mode, the abutting hole (75) is formed in the air cylinder (72), and the abutting hole (75) is aligned with the ventilation pipe (61).

4. An injection molding machine convenient for plastic barrel blanking according to claim 3, characterized in that, the clamping mechanism (8) comprises a clamping block (81), a limiting frame (82) and a third elastic piece (83), the clamping block (81) is connected to the air cylinder (72), the clamping block (81) is aligned with the buffer hole (41), the limiting frame (82) is slidingly connected to one side, close to the clamping block (81), of the second mold (4), the clamping block (81) clamps the limiting frame (82), the limiting frame (82) contacts with the air pipe (61) when moving, and the third elastic piece (83) is connected between the limiting frame (82) and the second mold (4).

5. The injection molding machine convenient for plastic barrel blanking according to claim 4, further comprising an ejection mechanism (9) for pushing out the plastic barrel, wherein the ejection mechanism (9) comprises a movable rod (91), an annular push plate (92), a telescopic long rod (93) and a sleeve ring (94), the first mold (2) is connected with the movable rods (91) corresponding to the electric push rods (5) in number in a sliding manner, the annular push plate (92) is connected between the left sides of the movable rods (91), the telescopic long rods (93) are connected to the back sides of the movable rods (91), the sleeve ring (94) is connected to the telescopic rods of the electric push rods (5), and the sleeve rings (94) are respectively connected with the adjacent telescopic long rods (93).

6. The injection molding machine for facilitating plastic barrel blanking according to claim 5, further comprising a first spraying mechanism (10) for smearing degumming agent on the inner wall of the first mold (2), wherein the first spraying mechanism (10) comprises a fixing frame (101), a liquid storage barrel (102), a cover (1021), a pump (103), a first hose (104) and an annular sponge block (105), the fixing frame (101) is connected to the supporting frame (1), the liquid storage barrel (102) is connected to the fixing frame (101), a cover (1021) is connected to the liquid storage barrel (102) in a threaded manner, the pump (103) is connected to the fixing frame (101), the pump (103) is communicated with the liquid storage barrel (102), the pump (103) is connected with the first hose (104) and is communicated with an adjacent movable rod (91), the annular push plate (92) is externally connected with the annular sponge block (105), the annular sponge block (105) is contacted with the inner wall of the first mold (2), the annular push plate (92) is externally provided with a liquid outlet hole (106) in a spacing manner, the annular push plate (92) is connected with the movable rod (92) and the inner part (107) is communicated with the liquid channel (107), the first hose (104) communicates with the liquid passage (107).

7. The injection molding machine convenient for plastic barrel blanking according to claim 6, further comprising a second spraying mechanism (11) for spraying degumming agent to the second mold (4), wherein the second spraying mechanism (11) comprises a connecting ring (1101), an annular spray pipe (1102) and a second hose (1103), the connecting ring (1101) is connected to one side, close to the second mold (4), of the outer portion of the first mold (2) at intervals, the annular spray pipe (1102) is connected between the connecting rings (1101), and the second hose (1103) is connected and communicated between the annular spray pipe (1102) and the first hose (104).

8. The injection molding machine for facilitating the blanking of plastic barrels according to claim 5, wherein the annular pushing plate (92) is internally of a hollow structure.