Bottle blowing mold for blow molding of PET plastic bottle

Abstract

The utility model discloses a bottle blowing mold for blow molding of PET (polyethylene terephthalate) plastic bottles, which belongs to the technical field of plastic bottle production molds and comprises a base, a support frame fixedly mounted on the base, a blow molding head arranged above the base and a connecting plate arranged on the base. Through cooperative use of the devices, when two half molds need to be replaced, a plurality of pressing rings are manually pressed, through cooperation of a telescopic rod, a first spring, an inserting block, the pressing rings, a sliding rod, a baffle ring and a second spring, limiting of the inserting rod can be stopped, then the half mold is taken out, and therefore the half mold is conveniently replaced with a new half mold; the situation that the size precision, the surface smoothness and the overall quality of the plastic bottle are affected due to the fact that the two half molds are prone to abrasion after being used for a long time is reduced, and the shapes of the plastic bottle can be rich and diversified.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic bottle production mould, specifically is a PET plastic bottle blow mould for blow moulding. BACKGROUND

[0002] PET plastic bottles are not only widely used for packaging carbonated beverages, drinking water, fruit juice, enzymes and tea beverages, etc. and are the most widely used beverage packaging today, but also widely used in food, chemical, pharmaceutical packaging and many other fields. PET plastic has a wide range of applications in the packaging field. Whether it is packaging film or coiled material, PET plastic is used. PET plastic bottles are made by injection molding method, first the plastic is made into a bottom blank, and then the blank is moved to the blow molding mold while hot to blow molding.

[0003] According to the search, the utility model discloses a kind of blow molding mould for plastic bottle (publication number: CN213382933U), including bottom plate, the upper end of the bottom plate is fixedly connected with base, the left and right sides of the base are both equipped with half mould, the upper end of the bottom plate is fixedly connected with two vertical plates, driving mechanism for driving two half moulds is equipped between two vertical plates, the upper of the base is equipped with blow head, the upper end of the blow head is fixedly connected with horizontal plate, lifting mechanism for lifting horizontal plate is equipped between two vertical plates.

[0004] In the above patent, the first motor drives the rotating shaft to rotate, the rotating shaft drives the two first threaded rods to move, the two first threaded rods drive the two half molds to move, until the two half molds match with the base and the mold is closed, then the second motor drives the two second threaded rods to rotate, the two second threaded rods drive the horizontal plate to lift, the two horizontal plates drive the blow head to lift, so that the blow head can be inserted into the mold and blow molded, which is convenient to use and simple to close the mold. However, the mold cannot be changed flexibly, the two half molds are prone to wear after long-term use, which may affect the size accuracy, surface finish and overall quality of the plastic bottle, and different models of plastic bottles require different molds, which may result in a single plastic bottle model.

[0005] Therefore, the utility model provides a PET plastic bottle blow molding blow molding mould to solve the above problems. UTILITY MODEL CONTENTS

[0006] (I) Technical problem solved

[0007] The utility model provides a PET plastic bottle blow molding blow molding mould, which aims to solve the problems in the background art.

[0008] (II) Technical solution

[0009] In order to achieve the above object, the utility model provides the following technical scheme: a kind of bottle blowing mould for PET plastic bottle blow molding, the bottle blowing mould for PET plastic bottle blow molding includes base, support frame fixedly installed on base, blow head being set above base, connecting plate being set on base, half mould being set in one side of connecting plate and dismounting mechanism being set in connecting plate inside for the convenience and quick replacement and installation half mould.

[0010] Dismounting mechanism includes a plurality of fixed installation in one side of half mould Inserting rod, a plurality of control groove being opened in connecting plate for the inserting rod insertion, connecting block being fixedly installed in control groove inner wall, telescopic rod being fixedly installed in one side of connecting block, first spring being set on the side surface of telescopic rod, inserting block being fixedly installed on the movable end of telescopic rod, pressing ring being slidably installed in control groove, a plurality of sliding rods being fixedly installed in one side of pressing ring, stop ring being slidably installed in control groove and second spring being set in control groove, the side surface of inserting rod is opened with the insertion slot for the insertion of inserting block.

[0011] As a preferred technical scheme of the application, one end of the first spring is fixedly connected to one side of the connecting block, the other end of the first spring is fixedly connected to one side of the inserting block, the side of the sliding rod away from the pressing ring is attached to one side of the stop ring, one end of the second spring is fixedly connected to the side of the stop ring away from the sliding rod, and the other end of the second spring is fixedly connected to one side of the control groove.

[0012] As a preferred technical scheme of the application, the opposite sides of the two support frames are fixedly connected with electric push rods, the movable ends of the electric push rods are fixedly connected with push plates, and the sides of the two push plates are fixedly connected with the sides of the two connecting plates.

[0013] As a preferred technical scheme of the application, the top of the support frame is fixedly connected with a sleeve, a threaded rod is rotatably connected in one of the sleeves, a limiting rod is fixedly connected in the other sleeve, and the top of one of the sleeves is fixedly connected with a motor.

[0014] As a preferred technical scheme of the application, the output end of the motor penetrates the sleeve, the output end of the motor is fixedly connected with one end of the threaded rod, and a horizontal plate is slidably connected in the sleeve.

[0015] As a preferred technical scheme of the application, one end of the horizontal plate is screwed on the side surface of the threaded rod, the other end of the horizontal plate is slidably connected on the side surface of the limiting rod, and one side of the blow head is fixedly connected with one side of the horizontal plate.

[0016] (Three) beneficial effects

[0017] The utility model discloses simple structure, convenient to use, when needing to replace two half moulds, manually press multiple press rings, through the cooperation between telescopic link, first spring, insert block, press ring, slide bar, baffle ring and second spring, can stop to insert rod spacing, then take out half mould to replace new half mould conveniently, reduce the situation that because two half moulds are easy to produce abrasion after long time use to influence the size precision, surface finish and overall quality of plastic bottle, and can make the modelling of plastic bottle rich and varied. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a kind of PET plastic bottle blow mould structure diagram for blowing mould Figure 1 ;

[0019] Figure 2 It is a kind of PET plastic bottle blow mould structure diagram for blowing mould Figure 2 ;

[0020] Figure 3 It is a kind of PET plastic bottle blow mould structure diagram for blowing mould

[0021] Figure 4 It is Figure 3 A enlarged schematic view in place

[0022] Figure 5 It is a kind of PET plastic bottle blow mould structure diagram for blowing mould

[0023] Figure 6 It is Figure 5 B enlarged schematic view in place

[0024] In the drawing:

[0025] 1, base; 2, support frame; 3, blow head; 4, connecting plate; 5, half mould; 6, insert rod; 7, connecting block; 8, telescopic link; 9, first spring; 10, insert block; 11, press ring; 12, slide bar; 13, baffle ring; 14, second spring; 15, electric push rod; 16, push plate; 17, sleeve; 18, threaded rod; 19, limit rod; 20, motor; 21, cross plate. DETAILED DESCRIPTION

[0026] The technical scheme in the utility model embodiments will be described clearly and completely below in conjunction with the drawings in the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0027] The utility model provides a kind of bottle blowing mould for PET plastic bottle blow molding, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 And Figure 6 As shown, the bottle blowing mould for PET plastic bottle blow molding includes base 1, support frame 2 fixedly installed on base 1, blow head 3 arranged above base 1, connecting plate 4 arranged on base 1, half mould 5 arranged on one side of connecting plate 4 and dismounting mechanism arranged inside connecting plate 4 for conveniently and quickly replacing and installing half mould 5.

[0028] Dismounting mechanism includes a plurality of plug rods 6 fixedly installed on one side of half mould 5, a plurality of control grooves opened in connecting plate 4 for plug rod 6 insertion, connecting block 7 fixedly installed on inner wall of control groove, telescopic rod 8 fixedly installed on one side of connecting block 7, first spring 9 sleeved on side surface of telescopic rod 8, plug block 10 fixedly installed on movable end of telescopic rod 8, pressing ring 11 slidingly installed inside control groove, a plurality of sliding rods 12 fixedly installed on one side of pressing ring 11, stop ring 13 slidingly installed inside control groove and second spring 14 arranged inside control groove, and side surface of plug rod 6 is provided with insertion groove for plug block 10 insertion.

[0029] One end of first spring 9 is fixedly connected on one side of connecting block 7, the other end of first spring 9 is fixedly connected on one side of plug block 10, one side of sliding rod 12 away from pressing ring 11 is attached to one side of stop ring 13, one end of second spring 14 is fixedly connected on one side of stop ring 13 away from sliding rod 12, and the other end of second spring 14 is fixedly connected on one side of control groove.

[0030] The PET plastic bottle blow molding blow molding mold in use, first the base 1 is placed in the appropriate position, after the blow molding head 3 into the mold inside and blow molding, when the two half die 5 need to be replaced, by pressing the plurality of pressing ring 11, the movement of the pressing ring 11 drive the plurality of slide rod 12 synchronous movement, through the movement of the slide rod 12 to push the blocking ring 13 synchronous movement, and extrusion of the second spring 14, because the slide rod 12 with the slope of the block 10 fit, by the movement of the slide rod 12 drive the block 10 to both sides, and extrusion of the first spring 9, at the same time, the block 10 synchronous contraction, until the two block 10 from the inside of the slot, stop limiting the plug rod 6, after the two half die 5 and two connecting plate 4 is separated, by the elastic potential energy of the second spring 14, to the blocking ring 13 a reverse thrust, the blocking ring 13 together with the slide rod 12 and pressing ring 11, until the slide rod 12 and pressing ring 11 return to the initial position, by the elastic potential energy of the first spring 9, the block 10 is restored to the initial position, at the same time, the telescopic rod 8 extension, when replacing the new half die 5, by the half die 5 on the plurality of plug rod 6 is aligned and inserted into the plurality of control groove on the connecting plate 4 inside, the plug rod 6 first contact to the block 10, because the block 10 and the plug rod 6 contact with the slope, so as to push the two block 10 outward, and extrusion of the first spring 9, at the same time, the block 10 synchronous contraction, the plug rod 6 continues to insert, until the block 10 and the slot in the same vertical direction, by the elastic potential energy of the first spring 9 to push the block 10 into the slot, so as to complete the installation of the new half die 5.

[0031] Further, in order to facilitate the control of two half die 5, as shown in Figure 1 、 Figure 2 and Figure 3 , the opposite side of the two support frame 2 is fixedly connected with the electric push rod 15, the movable end of the electric push rod 15 is fixedly connected with the push plate 16, one side of the two push plate 16 is fixedly connected with one side of the two connecting plate 4.

[0032] The PET plastic bottle blow molding blow molding mold in use, by starting the two electric push rod 15 at the same time, the movable end of the electric push rod 15 drive the two push plate 16 synchronous inward movement, by the movement of the push plate 16 drive the two connecting plate 4 and half die 5 synchronous inward movement, until the two half die 5 combination, that is, the blow molding head 3 into the mold inside and blow molding.

[0033] Among them, in order to facilitate the control of blow molding head 3, as shown in Figure 1 、 Figure 2 and Figure 3 , the top of the support frame 2 is fixedly connected with the sleeve 17, one of the sleeve 17 is rotatably connected with the threaded rod 18, the other sleeve 17 is fixedly connected with the limiting rod 19, one of the sleeve 17 is fixedly connected with the motor 20.

[0034] The output end of the motor 20 penetrates the sleeve 17, and is fixedly connected with one end of the threaded rod 18. The inside of the sleeve 17 is slidingly connected with the cross plate 21.

[0035] One end of the cross plate 21 is screwed on the side surface of the threaded rod 18, and the other end of the cross plate 21 is slidingly connected with the side surface of the limiting rod 19. One side of the blow molding head 3 is fixedly connected with one side of the cross plate 21.

[0036] When the two half-molds 5 are combined through the cooperation of the two electric push rods 15 and the two push plates 16, the motor 20 is started, the output shaft of the motor 20 drives the threaded rod 18 to rotate synchronously, the threaded rod 18 drives the cross plate 21 to move synchronously along the threaded rod 18, the cross plate 21 is limited by the limiting rod 19 at this time, the blow molding head 3 is driven to move synchronously through the movement of the cross plate 21, so that the blow molding head 3 is driven to extend into the mold and blow molding is performed.

[0037] The above is only the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, should be covered in the protection scope of the present application.

Claims

1. A blow molding die for PET plastic bottles, characterized in that: The blow molding mold for PET plastic bottles includes a base (1), a support frame (2) fixedly installed on the base (1), a blow molding head (3) set above the base (1), a connecting plate (4) set on the base (1), a half mold (5) set on one side of the connecting plate (4), and a loading and unloading mechanism set inside the connecting plate (4) for convenient and quick replacement and installation of the half mold (5). The loading and unloading mechanism includes multiple insertion rods (6) fixedly installed on one side of the half mold (5), multiple control slots opened on the connecting plate (4) for the insertion rods (6) to be inserted, a connecting block (7) fixedly installed on the inner wall of the control slot, a telescopic rod (8) fixedly installed on one side of the connecting block (7), a first spring (9) sleeved on the side surface of the telescopic rod (8), an insertion block (10) fixedly installed on the movable end of the telescopic rod (8), a pressing ring (11) slidably installed inside the control slot, multiple sliding rods (12) fixedly installed on one side of the pressing ring (11), a retaining ring (13) slidably installed inside the control slot, and a second spring (14) provided inside the control slot. The side surface of the insertion rod (6) is provided with a slot for the insertion block (10) to be inserted.

2. The blow molding die for PET plastic bottles according to claim 1, characterized in that: One end of the first spring (9) is fixedly connected to one side of the connecting block (7), and the other end of the first spring (9) is fixedly connected to one side of the insert block (10). The side of the slide rod (12) away from the pressing ring (11) is in contact with one side of the retaining ring (13). One end of the second spring (14) is fixedly connected to the side of the retaining ring (13) away from the slide rod (12), and the other end of the second spring (14) is fixedly connected to one side of the control groove.

3. The blow molding die for PET plastic bottles according to claim 1, characterized in that: Electric push rods (15) are fixedly connected to opposite sides of the two support frames (2), and push plates (16) are fixedly connected to the movable ends of the electric push rods (15). One side of each of the two push plates (16) is fixedly connected to one side of each of the two connecting plates (4).

4. The blow molding die for PET plastic bottles according to claim 1, characterized in that: The top of the support frame (2) is fixedly connected to a sleeve (17), one of the sleeves (17) is rotatably connected to a threaded rod (18), the other sleeve (17) is fixedly connected to a limit rod (19), and the top of the one of the sleeves (17) is fixedly connected to a motor (20).

5. A blow molding die for PET plastic bottles according to claim 4, characterized in that: The output end of the motor (20) passes through the sleeve (17), and the output end of the motor (20) is fixedly connected to one end of the threaded rod (18). A cross plate (21) is slidably connected inside the sleeve (17).

6. A blow molding die for PET plastic bottles according to claim 5, characterized in that: One end of the horizontal plate (21) is screwed to the side surface of the threaded rod (18), and the other end of the horizontal plate (21) is slidably connected to the side surface of the limiting rod (19). One side of the blow molding head (3) is fixedly connected to one side of the horizontal plate (21).

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