End sealing device of plastic bottle blowing machine

Abstract

The utility model relates to the technical field of beverage bottle processing, and discloses an end socket device of a plastic bottle blowing machine, which comprises a blow molding pipe, a fixed disc is fixed on the outer wall surface of the blow molding pipe, and the blow molding pipe is communicated with a blowing nozzle positioned below the fixed disc and a connecting pipe positioned above the fixed disc. A locking assembly for fixing the blow molding pipe to the connecting pipe is connected between the blow molding pipe and the connecting pipe, a plurality of through holes are formed in the blowing nozzle, four sliding seats are arranged on the fixing disc in a sliding mode, a baffle located below the fixing disc is fixed to the sliding seats, and the blow molding pipe and the connecting pipe are connected through the sliding seats. And a driving assembly for controlling the four sliding seats to vertically slide towards the center of the fixed disc is mounted on the fixed disc. The utility model has the following advantages and effects: the bottle opening can be prevented from deforming in the blow molding process, the bottle blowing quality is improved, the blow molding pipe is convenient to mount and dismount, and the processing convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of beverage bottle processing, in particular to a head sealing device for a plastic bottle blowing machine. Background Art

[0002] A bottle blowing machine is a machine that blows plastic particles softened into liquid or finished bottle preforms into bottles through certain process means. The bottle preforms are heated and softened in the heating system through a conveyor chain, and then transferred to the mold through mechanical fingers, and sealed by a sealing device. After sealing, the bottle preforms are stretched by a stretching device, and then blown into shape to complete the entire bottle blowing process; the current bottle blowing machine sealing device has a sealing head that is directly inserted into the bottle mouth of the preform for blowing. In the prior art, the bottle mouth is usually exposed outside the bottle blowing mold, which makes the bottle mouth easy to deform during the blow molding process, and the blow molding tube is easy to be damaged after long-term use. The existing blow molding tube is connected to the workbench by bolts, which is troublesome to disassemble and replace the blow molding tube, and inconvenient to operate. Utility Model Content

[0003] The utility model aims to provide a head sealing device for a plastic bottle blowing machine, which has the effects of preventing the bottle mouth from deforming during the blowing process, improving the quality of the bottle blowing, facilitating the installation and disassembly of the blowing tube, and improving the processing convenience.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions: a head sealing device for a plastic bottle blowing machine, comprising a blow molding tube, a fixed disk fixed on the outer wall of the blow molding tube, the blow molding tube is connected to a blowing nozzle located below the fixed disk and a connecting tube located above the fixed disk, a locking assembly for fixing the blow molding tube to the connecting tube is connected between the blow molding tube and the connecting tube, a plurality of through holes are provided on the blow molding nozzle, a sliding seat is slid on the fixed disk, a baffle located below the fixed disk is fixed on the sliding seat, the sliding seats are set to four, and a driving assembly for controlling the four sliding seats to slide perpendicularly to the center of the fixed disk is installed on the fixed disk.

[0005] By adopting the above technical scheme, the connecting pipe is connected to the main body of the bottle blowing machine. During processing, the blow molding tube and the blowing nozzle are inserted into the bottle mouth of the preform for blowing. Before blowing, the driving component drives the four sliding seats to move toward the center of the fixed disk, so that the baffle can clamp and limit the outer wall of the bottle mouth, thereby avoiding deformation of the bottle mouth during the blow molding process and improving the quality of bottle blowing. The locking component is used to relatively fix the blow molding tube and the connecting pipe or remove the blow molding tube from the connecting pipe, so that the blow molding tube can be repaired and replaced easily, thereby improving the processing convenience.

[0006] The utility model is further configured as follows: the driving assembly comprises two driving cylinders located on both sides of the blow molding tube, the output end and the main body end of the driving cylinder are respectively fixed to two sliding seats on the same horizontal line, four sliding seats are hinged with V-shaped connecting rods near one end of the blow molding tube, connecting plates are hinged between the ends of the four V-shaped connecting rods, and the upper end of the blow molding tube is connected to the connecting tube after passing through the connecting plate.

[0007] By adopting the above technical scheme, when clamping and limiting the outer wall of the bottle mouth, the two driving cylinders are started, and the return stroke of the output end of the driving cylinder shortens the driving cylinder as a whole, driving the two sliding seats connected to the cylinder output end and the cylinder body end to slide toward the center of the fixed plate relative to the fixed plate, so that the sliding seat drives the V-shaped connecting rod to rotate, and the rotation of the other end of the V-shaped connecting rod pushes the connecting plate to rotate relative to the blow molding tube, and the rotation of the connecting plate pulls the other two V-shaped connecting rods to rotate, and the end of the V-shaped connecting rod pulls the other two sliding seats to slide toward the center of the fixed plate, and finally the four sliding seats respectively drive the baffle to move toward the direction close to the bottle mouth and finally fit the outer wall of the bottle mouth, so as to clamp and limit the bottle mouth and prevent the bottle mouth from deforming during the blow molding process.

[0008] The utility model is further configured as follows: the baffle is configured as an arc.

[0009] By adopting the above technical solution, the outer wall of the bottle mouth is attached to the outer wall of the bottle mouth to block the outer wall of the bottle mouth, thereby avoiding deformation of the bottle mouth during the blow molding process, improving the quality of the blow molding, and being suitable for bottle mouths of different sizes, thereby improving the applicability of the device.

[0010] The utility model is further configured as follows: the fixed plate is provided with a through groove for the sliding seat to slide.

[0011] By adopting the above technical solution, when the output end of the driving cylinder returns or extends, the sliding seat connected to it is driven to slide in the through groove on the fixed plate. At the same time, the four sliding seats are moved toward or away from the center of the fixed plate through the V-shaped connecting rod and the connecting plate, thereby clamping and limiting the bottle mouth or releasing the bottle mouth.

[0012] The utility model is further configured as follows: both sides of the sliding seat are provided with limiting grooves for the fixing plates on both sides of the through groove to be embedded.

[0013] By adopting the above technical solution, the sliding seat is restricted from moving up and down relative to the fixed plate, so that the sliding seat can only move horizontally along the through groove direction on the fixed plate, thereby increasing the bottle mouth clamping stability.

[0014] The utility model is further configured as follows: the locking assembly includes a ring and an internal threaded sleeve which are sleeved on the upper end of the blow molding tube, the bottom end of the ring is provided with a first outer conical surface, the internal threaded sleeve is provided with a first inner conical surface which matches the first outer conical surface, the bottom end of the connecting tube is provided with an outer thread which matches the internal threaded sleeve, the upper end of the ring is provided with a second outer conical surface, and the bottom end of the connecting tube is provided with a second inner conical surface which matches the second outer conical surface.

[0015] By adopting the above technical scheme, when installing the blow molding tube, the upper end of the blow molding tube is extended into the inner cavity of the connecting tube, the internal thread of the internal thread sleeve is threadedly connected with the external thread at the bottom end of the connecting tube, the second outer cone surface of the collar is embedded in the second inner cone surface at the bottom end of the connecting tube, and then the internal thread sleeve is rotated relative to the connecting tube thread to move the internal thread sleeve upward, and at the same time, the internal thread sleeve pushes the first outer cone surface through the first inner cone surface, thereby pushing the collar upward, so that the second outer cone surface is finally completely embedded in the second inner cone surface, completing the rapid installation and connection of the blow molding tube and the connecting tube, and also facilitating rapid disassembly, facilitating the inspection and maintenance of the blow molding tube, and improving processing convenience.

[0016] The utility model is further configured as follows: the connecting pipe is provided with an inner notch for inserting the upper end of the blow molding pipe, a first sealing ring abutting against the inner notch is fixed to the upper end of the blow molding pipe, and a second sealing ring abutting against the bottom end of the connecting pipe is fixed outside the collar.

[0017] By adopting the above technical solution, the upper end of the blow molding tube is inserted into the connecting tube through the inner groove, so that the inner cavity of the blow molding tube is connected with the inner cavity of the connecting tube, the first sealing ring forms a first layer of seal between the blow molding tube and the connecting tube, and the second sealing ring forms a second layer of seal between the sleeve and the connecting tube, so that the sealing of the connecting tube and the blow molding tube is maintained while achieving quick installation, thereby improving the quality of bottle blowing.

[0018] The utility model is further configured as follows: a limiting plate located below the internal threaded sleeve is fixed outside the blow molding tube.

[0019] By adopting the above technical solution, when disassembling the blow molding tube, the internal threaded sleeve is rotated in the opposite direction relative to the connecting pipe so that the internal threaded sleeve is unscrewed from the bottom end of the connecting pipe, and the upper end of the ring is also extended from the bottom end of the connecting pipe. The limit plate prevents the internal threaded sleeve and the ring from detaching from the blow molding tube from the bottom, which is convenient for the next installation.

[0020] The utility model is further configured as follows: the blow molding tube is fixed with a sealing plate located below the fixing plate.

[0021] By adopting the above technical solution, when the blow molding tube and the blow nozzle are inserted into the bottle mouth of the preform for blowing, the sealing plate contacts the upper end surface of the bottle mouths of different sizes, thereby sealing the ends of the bottle mouths of different sizes and improving the quality of bottle blowing.

[0022] The utility model is further configured as follows: a third sealing ring is fixed below the sealing plate.

[0023] By adopting the above technical solution, the third sealing ring further improves the sealing performance.

[0024] The beneficial effects of the utility model are:

[0025] 1. Start the two driving cylinders, and the return stroke of the output end of the driving cylinder shortens the driving cylinder as a whole, driving the two sliding seats connected to the output end of the cylinder and the main end of the cylinder to slide relative to the fixed plate toward the center of the fixed plate, so that the sliding seat drives the V-shaped connecting rod to rotate. The other end of the V-shaped connecting rod rotates to push the connecting plate to rotate relative to the blow molding tube. The rotation of the connecting plate pulls the other two V-shaped connecting rods to rotate. The ends of the V-shaped connecting rod pull the other two sliding seats to slide toward the center of the fixed plate. Finally, the four sliding seats drive the baffles to move toward the bottle mouth and finally fit the outer wall of the bottle mouth, so as to clamp and limit the bottle mouth to prevent the bottle mouth from deforming during the blow molding process.

[0026] 2. When installing the blow molding tube, the upper end of the blow molding tube is extended into the inner cavity of the connecting tube, the inner thread of the inner thread sleeve is threadedly connected with the outer thread of the bottom end of the connecting tube, and the second outer cone surface of the collar is embedded in the second inner cone surface of the bottom end of the connecting tube. Then the inner thread sleeve is rotated relative to the connecting tube thread to move the inner thread sleeve upward. At the same time, the inner thread sleeve pushes the first outer cone surface through the first inner cone surface, thereby pushing the collar upward, so that the second outer cone surface is finally completely embedded in the second inner cone surface, completing the rapid installation and connection of the blow molding tube and the connecting tube, and also facilitating rapid disassembly, facilitating the maintenance of the blow molding tube, and improving processing convenience;

[0027] 3. When the blow molding tube and the blow nozzle are inserted into the bottle mouth of the preform for blowing, the sealing plate contacts the upper end surface of the bottle mouths of different sizes, thereby sealing the ends of the bottle mouths of different sizes and improving the quality of bottle blowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a structural schematic diagram of embodiment 1 of the utility model.

[0030] Figure 2 It is a schematic diagram of the top structure of Example 1 of the utility model.

[0031] Figure 3 It is a cross-sectional structural schematic diagram of embodiment 1 of the present utility model.

[0032] Figure 4 yes Figure 3 Enlarged view of point A.

[0033] Figure 5 It is a schematic diagram of the bottom structure of Example 1 of the utility model.

[0034] In the figure, 1, blow molding tube; 2, fixed plate; 3, blowing nozzle; 4, connecting pipe; 5, locking assembly; 501, collar; 502, internal thread sleeve; 503, first outer cone; 504, first inner cone; 505, external thread; 506, second outer cone; 507, second inner cone; 508, inner notch; 509, first sealing ring; 510, second sealing ring; 6, through hole; 7, sliding seat; 8, baffle; 9, driving assembly; 91, driving cylinder; 92, V-shaped connecting rod; 93, connecting plate; 10, through groove; 11, limit groove; 12, limit plate; 13, sealing plate; 14, third sealing ring. DETAILED DESCRIPTION

[0035] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] Embodiment 1, a head sealing device for a plastic bottle blowing machine, such as Figure 1-5 As shown, it includes a blow molding tube 1, a fixed disk 2 is fixed on the outer wall of the blow molding tube 1, the blow molding tube 1 is connected to a blowing nozzle 3 located below the fixed disk 2 and a connecting tube 4 located above the fixed disk 2, a locking assembly 5 is connected between the blow molding tube 1 and the connecting tube 4 to fix the blow molding tube 1 to the connecting tube 4, a plurality of through holes 6 are provided on the blowing nozzle 3, a sliding seat 7 is slidably provided on the fixed disk 2, a baffle 8 located below the fixed disk 2 is fixed on the sliding seat 7, four sliding seats 7 are provided, and a driving assembly 9 is installed on the fixed disk 2 to control the four sliding seats 7 to slide perpendicularly to the center of the fixed disk 2.

[0037] Furthermore, the driving assembly 9 includes two driving cylinders 91 located on both sides of the blow molding tube 1, and the output end and the main body end of the driving cylinder 91 are respectively fixed to two sliding seats 7 on the same horizontal line. The four sliding seats 7 are hinged with V-shaped connecting rods 92V at one end close to the blow molding tube 1, and connecting plates 93 are hinged between the ends of the four V-shaped connecting rods 92V. The upper end of the blow molding tube 1 passes through the connecting plate 93 and is connected to the connecting tube 4.

[0038] Furthermore, the baffle 8 is designed to be arc-shaped.

[0039] Furthermore, the fixed plate 2 is provided with a through groove 10 for the sliding seat 7 to slide.

[0040] Furthermore, limiting grooves 11 are provided on both sides of the sliding seat 7 for the fixing plates 2 on both sides of the through groove 10 to be embedded.

[0041] Furthermore, the locking assembly 5 includes a ring 501 and an internal threaded sleeve 502 which are sleeved on the upper end of the blow molding tube 1, the bottom end of the ring 501 is provided with a first outer conical surface 503, the internal threaded sleeve 502 is provided with a first inner conical surface 504 which is adapted to the first outer conical surface 503, the bottom end of the connecting tube 4 is provided with an outer thread 505 which is adapted to the internal threaded sleeve 502, the upper end of the ring 501 is provided with a second outer conical surface 506, and the bottom end of the connecting tube 4 is provided with a second inner conical surface 507 which is adapted to the second outer conical surface 506.

[0042] Furthermore, the connecting tube 4 is provided with an inner notch 508 for inserting the upper end of the blow molding tube 1 , a first sealing ring 509 abutting against the inner notch 508 is fixed to the upper end of the blow molding tube 1 , and a second sealing ring 510 abutting against the bottom end of the connecting tube 4 is fixed outside the ring 501 .

[0043] Furthermore, a limiting plate 12 located below the internal threaded sleeve 502 is fixed outside the blow molding tube 1 .

[0044] Furthermore, the blow molding tube 1 is fixed with a sealing plate 13 located below the fixing plate 2 .

[0045] Furthermore, a third sealing ring 14 is fixed below the sealing plate 13 .

[0046] The working principle of the utility model is as follows: the connecting tube 4 is connected to the main body of the bottle blowing machine. During processing, the blowing tube 1 and the blowing nozzle 3 are inserted into the bottle mouth of the preform for blowing. Before blowing, the two driving cylinders 91 are started, and the return stroke of the output end of the driving cylinder 91 shortens the driving cylinder 91 as a whole, driving the two sliding seats 7 connected to the cylinder output end and the cylinder main body end to slide relative to the fixed disk 2 toward the center of the fixed disk 2, so that the sliding seat 7 drives the V-shaped connecting rod 92V to rotate, and the other end of the V-shaped connecting rod 92V rotates to drive the connecting rod 92V to rotate. The connecting plate 93 rotates relative to the blow molding tube 1, and the rotation of the connecting plate 93 pulls the other two V-shaped connecting rods 92V to rotate. The ends of the V-shaped connecting rods 92V push the other two sliding seats 7 to slide toward the center of the fixed plate 2. Finally, the four sliding seats 7 respectively drive the baffles 8 to move toward the bottle mouth and finally fit the outer wall of the bottle mouth, thereby clamping and limiting the bottle mouth to prevent the bottle mouth from deforming during the blow molding process. When the blow molding tube 1 and the blowing nozzle 3 are inserted into the bottle mouth of the preform for blowing, the sealing plate 13 is in contact with the upper end surfaces of the bottle mouths of different sizes. When installing the blow molding tube 1, the upper end of the blow molding tube 1 is inserted into the inner cavity of the connecting tube 4, the inner thread of the inner thread sleeve 502 is threadedly connected with the outer thread 505 at the bottom end of the connecting tube 4, and the second outer cone 506 of the collar 501 is embedded in the second inner cone 507 at the bottom end of the connecting tube 4, and then the inner thread sleeve 502 is rotated relative to the thread of the connecting tube 4 to move the inner thread sleeve 502 upward, and at the same time, the inner thread sleeve 502 pushes the first outer cone through the first inner cone 504. 503 pushes the collar 501 to move upward, so that the second outer cone 506 is finally completely embedded in the second inner cone 507, completing the quick installation and connection of the blow molding tube 1 and the connecting tube 4. When disassembling the blow molding tube 1, the internal threaded sleeve 502 is rotated in the opposite direction relative to the connecting tube 4 so that the internal threaded sleeve 502 is unscrewed from the bottom end of the connecting tube 4. At the same time, the upper end of the collar 501 also extends out from the bottom end of the connecting tube 4. The limit plate 12 prevents the internal threaded sleeve 502 and the collar 501 from detaching from the blow molding tube 1 from the bottom, which is convenient for the next installation.

Claims

1. A head sealing device for a plastic bottle blowing machine, comprising a blowing tube (1), characterized in that: A fixed disk (2) is fixed on the outer wall of the blow molding tube (1); the blow molding tube (1) is connected to a blowing nozzle (3) located below the fixed disk (2) and a connecting tube (4) located above the fixed disk (2); a locking assembly (5) for fixing the blow molding tube (1) to the connecting tube (4) is connected between the blow molding tube (1) and the connecting tube (4); a plurality of through holes (6) are provided on the blowing nozzle (3); a sliding seat (7) is slidably provided on the fixed disk (2); a baffle (8) located below the fixed disk (2) is fixed to the sliding seat (7); four sliding seats (7) are provided; and a driving assembly (9) for controlling the four sliding seats (7) to slide perpendicularly toward the center of the fixed disk (2) is installed on the fixed disk (2).

2. A head sealing device for a plastic bottle blowing machine according to claim 1, characterized in that: The driving assembly (9) comprises two driving cylinders (91) located on both sides of the blow molding tube (1); the output end and the main body end of the driving cylinder (91) are respectively fixed to two sliding seats (7) on the same horizontal line; four sliding seats (7) are hingedly connected with V-shaped connecting rods (92) at one end close to the blow molding tube (1); connecting plates (93) are hingedly connected between the ends of the four V-shaped connecting rods (92); and the upper end of the blow molding tube (1) passes through the connecting plate (93) and is connected to the connecting tube (4).

3. A head sealing device for a plastic bottle blowing machine according to claim 1, characterized in that: The baffle (8) is designed to be arc-shaped.

4. A head sealing device for a plastic bottle blowing machine according to claim 1, characterized in that: The fixed plate (2) is provided with a through groove (10) for the sliding seat (7) to slide.

5. A head sealing device for a plastic bottle blowing machine according to claim 4, characterized in that: The two sides of the sliding seat (7) are provided with limiting grooves (11) for the fixing plates (2) on both sides of the through groove (10) to be embedded.

6. A head sealing device for a plastic bottle blowing machine according to claim 1, characterized in that: The locking assembly (5) comprises a collar (501) and an internally threaded sleeve (502) which are sleeved on the upper end of the blow molding tube (1); the collar (501) has a first outer conical surface (503) at its bottom end; the internally threaded sleeve (502) has a first inner conical surface (504) which matches the first outer conical surface (503); the connecting tube (4) has an outer thread (505) which matches the internally threaded sleeve (502); the collar (501) has a second outer conical surface (506) at its top end; and the connecting tube (4) has a second inner conical surface (507) which matches the second outer conical surface (506) at its bottom end.

7. A head sealing device for a plastic bottle blowing machine according to claim 6, characterized in that: The connecting tube (4) is provided with an inner notch (508) for inserting the upper end of the blow molding tube (1), a first sealing ring (509) abutting against the inner notch (508) is fixed to the upper end of the blow molding tube (1), and a second sealing ring (510) abutting against the bottom end of the connecting tube (4) is fixed outside the collar (501).

8. The head sealing device for a plastic bottle blowing machine according to claim 6, characterized in that: A limiting plate (12) located below the internal threaded sleeve (502) is fixed outside the blow molding tube (1).

9. The head sealing device for a plastic bottle blowing machine according to claim 1, characterized in that: The blow molding tube (1) is fixed with a sealing plate (13) located below the fixing plate (2).

10. A head sealing device for a plastic bottle blowing machine according to claim 9, characterized in that: A third sealing ring (14) is fixed below the sealing plate (13).

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