Blowing structure for blow molding

Abstract

The utility model relates to the technical field of blowing structures of blow molding machines, and discloses a blowing structure for blow molding, which comprises a mounting frame, a supporting plate is fixedly assembled on the outer wall of the mounting frame, a hydraulic oil cylinder is mounted at the top of the supporting plate, a limiting rod is movably sleeved in an inner cavity of the supporting plate, and a hydraulic cylinder is mounted at the top of the hydraulic oil cylinder. And a lifting plate is fixedly assembled on the outer wall of the limiting rod. According to the blowing structure for blow molding, a sealing sleeve is arranged on the outer wall of an air guide pipe, and the sealing sleeve can be lifted under the action of an electric push rod, so that the inner wall and the bottom of the sealing sleeve can be in contact with a connecting gap between the air guide pipe and a mold, and air is supplied to an inner cavity of the sealing sleeve under the action of a micro air pump; and the inner wall and the bottom of the sealing sleeve are expanded, so that a gap between the gas-guide tube and the mold is blocked, good sealing can be formed between the gas-guide tube and the mold, and leakage at the joint between the gas-guide tube of traditional equipment and the mold is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of blowing structures of blow molding machines, in particular to a blowing structure used for blow molding. Background Art

[0002] The production of plastic packaging bottles usually uses a blow molding process, which involves feeding a cylindrical molten plastic material into a mold cavity. A blowing device is then used to inflate the mold cavity, causing the plastic material to expand and adhere to the mold cavity wall. After cooling, the finished packaging bottle is formed, which requires the use of a blowing structure.

[0003] When using a traditional blowing device, the blowing pipe needs to extend into the top of the mold to supply air to the inner cavity of the mold. However, the seal between the blowing pipe of the traditional equipment and the air inlet on the top of the mold has certain defects. The lack of a sealing component between the blowing pipe and the air inlet of the mold leads to incomplete sealing, which in turn affects the normal air supply of the blowing pipe to the inner cavity of the mold, causing gas leakage, thereby affecting the normal molding of the bottle blank. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a blowing structure for blow molding, which has the advantages of good sealing effect and detection of whether the sealing is good, and solves the problems raised by the above-mentioned background technology.

[0005] The utility model provides the following technical solutions: a blowing structure for blow molding, comprising a mounting frame, the outer wall of the mounting frame is fixedly equipped with a support plate, the top of the support plate is equipped with a hydraulic cylinder, the inner cavity of the support plate is movably sleeved with a limit rod, the outer wall of the limit rod is fixedly equipped with a lifting plate, the bottom of the lifting plate is fixedly equipped with an air pipe, the outer wall of the air pipe is fixedly equipped with an air guide pipe, the outer wall of the air pipe is fixedly equipped with a mounting plate, the inner cavity of the mounting plate is fixedly equipped with an electric push rod, the outer wall of the air pipe is movably sleeved with a sealing sleeve, the outer wall of the sealing sleeve A detection chamber is fixedly assembled, the inner wall of the sealing sleeve is fixedly assembled with a sealing liner, the bottom of the sealing sleeve is fixedly assembled with a sealing ring, the top of the sealing sleeve is fixedly assembled with a bellows, the top of the lifting plate is fixedly assembled with a micro air pump, the outer wall of the detection chamber is fixedly assembled with a connecting pipe, the inner wall of the connecting pipe is fixedly assembled with a front eardrum, the inner wall of the connecting pipe is fixedly assembled with a rear eardrum, the outer wall of the front eardrum is fixedly assembled with an electrode sheet, the inner wall of the connecting pipe is fixedly assembled with a button battery, the outer wall of the connecting pipe is fixedly assembled with an indicator light, and a mold is installed on the top of the mounting frame.

[0006] As a preferred technical solution of the present invention: the inner wall diameter of the sealing sleeve is equal to the outer wall diameter of the blowing pipe, and the sealing liner and the sealing ring are both made of natural rubber.

[0007] As a preferred technical solution of the present invention: the outer wall of the bellows away from one end of the sealing sleeve is connected to the micro air pump, and the bottom of the electric push rod is connected to the top of the sealing sleeve.

[0008] As a preferred technical solution of the present invention: there are two electric push rods, and the two electric push rods are respectively installed on both sides of the outer wall of the blowing pipe.

[0009] As a preferred technical solution of the present invention: the inner cavity of the connecting tube is communicated with the inner cavity of the detection chamber, and the front eardrum and the rear eardrum are both made of natural rubber.

[0010] As a preferred technical solution of the present invention: the button battery is electrically connected to the electrode sheet and the indicator light, and the outer wall of the front eardrum is also installed with an electrode sheet.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The blowing structure for blow molding uses a sealing sleeve arranged on the outer wall of the air duct. The sealing sleeve can be raised and lowered under the action of an electric push rod, so that the inner wall and bottom of the sealing sleeve can contact the connection gap between the air duct and the mold. Under the action of a micro air pump, air is supplied to the inner cavity of the sealing sleeve, causing the inner wall and bottom of the sealing sleeve to expand, thereby sealing the gap between the air duct and the mold, so that a good seal can be formed between the air duct and the mold, avoiding leakage at the connection between the air duct and the mold in traditional equipment.

[0013] 2. The blowing structure for blow molding has a detection chamber arranged on the outer wall of the sealing sleeve, a connecting tube arranged on the outer wall of the detection chamber, and a front tympanic membrane and a rear tympanic membrane arranged in the inner cavity of the connecting tube. When gas leakage occurs, the gas will pass through the bottom of the sealing sleeve into the detection chamber, thereby causing the front tympanic membrane to deform, so that the front and rear tympanic membranes contact each other, thereby forming a connected circuit, and the indicator light is lit under the action of the button battery to remind the user of gas leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the lifting plate structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the air guide tube of the utility model;

[0017] Figure 4 This is a schematic diagram of the sealing sleeve structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the connecting pipe structure of the utility model.

[0019] In the figure: 1. Mounting frame; 2. Support plate; 3. Hydraulic cylinder; 4. Lifting plate; 5. Limit rod; 6. Air blow pipe; 7. Air guide pipe; 8. Mounting plate; 9. Electric push rod; 10. Sealing sleeve; 11. Sealing liner; 12. Sealing ring; 13. Bellows; 14. Micro air pump; 15. Detection chamber; 16. Connecting pipe; 17. Front eardrum; 18. Rear eardrum; 19. Electrode sheet; 20. Button battery; 21. Indicator light; 22. Mold. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1 - Figure 5 A blowing structure for blow molding includes a mounting frame 1, the outer wall of the mounting frame 1 is fixedly equipped with a support plate 2, the top of the support plate 2 is equipped with a hydraulic cylinder 3, the inner cavity of the support plate 2 is movably sleeved with a limit rod 5, the outer wall of the limit rod 5 is fixedly equipped with a lifting plate 4, the bottom of the lifting plate 4 is fixedly equipped with a blowing pipe 6, the outer wall of the blowing pipe 6 is fixedly equipped with an air guide pipe 7, the outer wall of the blowing pipe 6 is fixedly equipped with a mounting plate 8, the inner cavity of the mounting plate 8 is fixedly equipped with an electric push rod 9, the outer wall of the blowing pipe 6 is movably sleeved with a sealing sleeve 10, the outer wall of the sealing sleeve 10 is fixedly equipped with a detection chamber 15, the sealing sleeve 10 The inner wall of the sealing sleeve 10 is fixedly equipped with a sealing liner 11, the bottom of the sealing sleeve 10 is fixedly equipped with a sealing ring 12, the top of the sealing sleeve 10 is fixedly equipped with a bellows 13, the top of the lifting plate 4 is fixedly equipped with a micro air pump 14, the outer wall of the detection chamber 15 is fixedly equipped with a connecting tube 16, the inner wall of the connecting tube 16 is fixedly equipped with a front eardrum 17, the inner wall of the connecting tube 16 is fixedly equipped with a rear eardrum 18, the outer wall of the front eardrum 17 is fixedly equipped with an electrode sheet 19, the inner wall of the connecting tube 16 is fixedly equipped with a button battery 20, the outer wall of the connecting tube 16 is fixedly equipped with an indicator light 21, and a mold 22 is installed on the top of the mounting frame 1.

[0022] In the above structure, by installing a plate 8 on the outer wall of the blowing tube 6 and an electric push rod 9 installed in the inner cavity of the installing plate 8, the electric push rod 9 can drive the sealing sleeve 10 below, so that the outer wall of the sealing sleeve 10 can move downward along the outer wall of the electric push rod 9, so that when the blowing tube 6 enters the inner cavity of the mold 22 and supplies air to the inner cavity of the mold 22, the sealing sleeve 10 can cover the top of the mold 22 and seal the position where the blowing tube 6 contacts the mold 22.

[0023] In a preferred embodiment, the inner diameter of the sealing sleeve 10 is equal to the outer diameter of the blowing tube 6 , and the sealing liner 11 and the sealing ring 12 are both made of natural rubber.

[0024] In the above structure, a sealing sleeve 10 is provided on the outer wall of the blowing tube 6, a sealing liner 11 is installed on the inner wall of the sealing sleeve 10, and a sealing ring 12 is installed at the bottom of the sealing sleeve 10. Air is supplied to the inner cavity of the sealing sleeve 10 under the action of a micro air pump 14 and a bellows 13, so that the air pressure in the inner cavity of the sealing sleeve 10 increases, thereby causing the sealing liner 11 and the outer wall of the sealing sleeve 10 to deform, and then the outer walls of the sealing liner 11 and the sealing ring 12 can fit against the outer walls of the blowing tube 6 and the mold 22, thereby sealing the gap between the blowing tube 6 and the mold 22.

[0025] In a preferred embodiment, the outer wall of the bellows 13 away from one end of the sealing sleeve 10 is connected to the micro air pump 14 , and the bottom of the electric push rod 9 is connected to the top of the sealing sleeve 10 .

[0026] In the above structure, a micro air pump 14 is provided on the outer wall of the lifting plate 4, and air can be supplied to the inner cavity of the bellows 13 under the action of the micro air pump 14, so that the gas enters the inner cavity of the sealing sleeve 10 along the bellows 13, thereby increasing the inner cavity pressure of the sealing sleeve 10 and performing the sealing operation. When the sealing sleeve 10 is used, the sealing sleeve 10 can be driven under the action of the electric push rod 9, so that the bottom of the sealing sleeve 10 can fit well on the top of the mold 22.

[0027] In a preferred embodiment, there are two electric push rods 9 , and the two electric push rods 9 are respectively installed on both sides of the outer wall of the blowing pipe 6 .

[0028] In the above structure, the two electric push rods 9 installed on both sides of the outer wall of the blowing pipe 6 can drive the sealing sleeve 10 under the action of the electric push rods 9, so that the sealing sleeve 10 can move up and down along the outer wall of the blowing pipe 6, and then the sealing sleeve 10 can cover the top of the mold 22 during the movement, thereby sealing the gap between the blowing pipe 6 and the mold 22.

[0029] In a preferred embodiment, the inner cavity of the connecting tube 16 is communicated with the inner cavity of the detection chamber 15 , and the front eardrum 17 and the rear eardrum 18 are both made of natural rubber.

[0030] In the above structure, by setting the detection chamber 15 on the outer wall of the sealing sleeve 10, after the sealing sleeve 10 and the detection chamber 15 are covered on the top of the mold 22, the sealing effect of the sealing sleeve 10 can be detected under the action of the detection chamber 15. If the seal of the sealing sleeve 10 leaks, the gas will pass through the bottom of the sealing sleeve 10 into the inner cavity of the detection chamber 15, and enter the inner cavity of the connecting tube 16, driving the front tympanic membrane 17, causing the outer wall of the front tympanic membrane 17 to deform.

[0031] In a preferred embodiment, the button battery 20 is electrically connected to the electrode sheet 19 and the indicator light 21 , and the outer wall of the front eardrum 17 is also installed with the electrode sheet 19 .

[0032] In the above structure, by installing the electrode sheet 19 on the outer wall of the front eardrum 17 and the rear eardrum 18, after the front eardrum 17 is deformed by the action of gas, the electrode sheet 19 on the outer wall of the front eardrum 17 will contact the electrode sheet 19 on the outer wall of the rear eardrum 18, thereby forming a connecting circuit. At this time, the indicator light 21 can be lit under the action of the button battery 20 to remind the user that the seal of the sealing sleeve 10 is leaking.

[0033] Working principle: During the use of the above-mentioned equipment, when it is necessary to inflate the inner cavity of the mold 22, the bottle blank is expanded in the inner cavity of the mold 22. At this time, the height of the blow pipe 6 is lowered by the action of the hydraulic cylinder 3, so that the outer wall of the blow pipe 6 is inserted into the inner cavity of the mold 22. At this time, the height of the sealing sleeve 10 is lowered by the electric push rod 9, so that the bottom of the sealing sleeve 10 contacts the top of the mold 22, so that the sealing sleeve 10 is completely covered at the connection between the blow pipe 6 and the mold 22. Then the micro air pump 14 is started, and under the action of the micro air pump 14, air is supplied to the inner cavity of the bellows 13, and enters the inner cavity of the sealing sleeve 10 along the bellows 13, so that the pressure in the inner cavity of the sealing sleeve 10 increases, thereby causing the outer walls of the sealing liner 11 and the sealing ring 12 to deform, so that the sealing liner 1 1 and the outer wall of the sealing ring 12 fit into the gap between the air blowing tube 6 and the mold 22 to seal the gap between the air blowing tube 6 and the mold 22. At this time, air can be supplied to the inner cavity of the air blowing tube 6 through the air guide tube 7, thereby inflating the bottle blank in the inner cavity of the mold 22 to expand it. When the sealing sleeve 10 is sealing, if there is still air leakage between the air blowing tube 6 and the mold 22, the leaked gas will enter the inner cavity of the detection chamber 15, thereby acting on the inner cavity of the connecting tube 16, thereby causing the outer wall of the front eardrum 17 to deform, causing the electrode sheet 19 on the outer wall of the front eardrum 17 to contact the electrode sheet 19 on the outer wall of the rear eardrum 18, forming a connected circuit, thereby lighting the indicator light 21 under the action of the button battery 20, to remind the user that there is a gas leakage and to take timely measures.

[0034] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blowing structure for blow molding, comprising a mounting frame (1), characterized in that: The outer wall of the mounting frame (1) is fixedly equipped with a support plate (2), the top of the support plate (2) is equipped with a hydraulic cylinder (3), the inner cavity of the support plate (2) is movably sleeved with a limit rod (5), the outer wall of the limit rod (5) is fixedly equipped with a lifting plate (4), the bottom of the lifting plate (4) is fixedly equipped with an air blowing pipe (6), the outer wall of the air blowing pipe (6) is fixedly equipped with an air guide pipe (7), the outer wall of the air blowing pipe (6) is fixedly equipped with a mounting plate (8), the inner cavity of the mounting plate (8) is fixedly equipped with an electric push rod (9), the outer wall of the air blowing pipe (6) is movably sleeved with a sealing sleeve (10), the outer wall of the sealing sleeve (10) is fixedly equipped with a detection chamber (15), and the inner wall of the sealing sleeve (10) is fixedly equipped with a sealing The inner lining (11) is fixedly equipped with a sealing ring (12) at the bottom of the sealing sleeve (10), a bellows (13) is fixedly equipped at the top of the sealing sleeve (10), a micro air pump (14) is fixedly equipped at the top of the lifting plate (4), a connecting tube (16) is fixedly equipped on the outer wall of the detection chamber (15), a front eardrum (17) is fixedly equipped on the inner wall of the connecting tube (16), a rear eardrum (18) is fixedly equipped on the inner wall of the connecting tube (16), an electrode sheet (19) is fixedly equipped on the outer wall of the front eardrum (17), a button battery (20) is fixedly equipped on the inner wall of the connecting tube (16), an indicator light (21) is fixedly equipped on the outer wall of the connecting tube (16), and a mold (22) is installed on the top of the mounting frame (1).

2. The blowing structure for blow molding according to claim 1, characterized in that: The inner wall diameter of the sealing sleeve (10) is equal to the outer wall diameter of the blowing pipe (6), and the sealing liner (11) and the sealing ring (12) are both made of natural rubber.

3. The blowing structure for blow molding according to claim 2, characterized in that: The outer wall of the bellows (13) away from one end of the sealing sleeve (10) is connected to the micro air pump (14), and the bottom of the electric push rod (9) is connected to the top of the sealing sleeve (10).

4. The blowing structure for blow molding according to claim 1, characterized in that: There are two electric push rods (9), and the two electric push rods (9) are respectively installed on both sides of the outer wall of the blowing pipe (6).

5. The blowing structure for blow molding according to claim 4, characterized in that: The inner cavity of the connecting tube (16) is in communication with the inner cavity of the detection chamber (15), and the front eardrum (17) and the rear eardrum (18) are both made of natural rubber.

6. The blowing structure for blow molding according to claim 1, characterized in that: The button battery (20) is electrically connected to the electrode sheet (19) and the indicator light (21), and the outer wall of the front eardrum (17) is also installed with an electrode sheet (19).

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