Injection-blowing-drawing forming device for packaging bottle

Abstract

The utility model relates to the technical field of packaging bottle production, in particular to an injection-blowing-drawing forming device of a packaging bottle, which comprises an upper die and a lower die, the upper die is positioned above the lower die, two forming dies and an adjusting mechanism are arranged between the upper die and the lower die, and the upper die is provided with a lifting mechanism in a matching manner. According to the utility model, the bottom die and the arc-shaped die with proper specifications are selected and spliced to form the cylindrical die, and then the plastic is injected into the cylindrical die and compressed air is injected through the pipe body, so that the plastic forms a hollow sleeve shape; then the hollow sleeve-shaped plastic is put into a forming mold, and compressed air is utilized to enable the plastic to be tightly attached to the inner wall of the forming mold to form a product, so that a user can manufacture the hollow sleeve-shaped plastic with the shape similar to that of the product by replacing arc-shaped molds or bottom molds with different specifications of the inner walls; therefore, when the hollow sleeve-shaped plastic enters the forming mold and is blown up by the compressed gas, the situation that the thickness is seriously uneven does not occur easily.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bottle production, in particular to an injection-blow-stretch molding device for packaging bottles. Background Art

[0002] When producing plastic packaging bottles, blow molding is usually used. In the general production process, the plastic is first placed in an injection molding machine, which melts the plastic and injects it into the mold to form a tubular shape. The thickness of the tubular plastic is uniform, and the diameters of the outer wall of the tubular plastic are similar. The tubular plastic is then placed in a mold for forming the body of the plastic bottle, and compressed air is injected into the mold. The compressed air will inflate the plastic from the inside of the tubular plastic, so that the plastic clings to the inner wall of the mold to form a product. The mold and the internal product are then cooled and shaped, then taken out for trimming, and the production of the plastic packaging bottle is completed. However, for some special-shaped plastic packaging bottles, such as those with a bottle body whose lower half is wider than the upper half, and those with a bottle body that has a greatly protruding area, the production of such bottles may result in a thinner bottle body in the more protruding part and an extremely uneven overall thickness of the bottle body during inflation, which is inconvenient. Utility Model Content

[0003] The utility model aims to provide an injection-blow-stretch molding device for packaging bottles to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An injection blow molding device for packaging bottles, comprising an upper mold and a lower mold, wherein the upper mold is located above the lower mold, two molding molds and an adjustment mechanism are arranged between the upper mold and the lower mold, and the upper mold is equipped with a lifting mechanism;

[0006] The adjustment mechanism includes multiple arc-shaped molds and multiple bottom molds. An injection port is opened at the center of one side of any bottom mold, a gate is opened at one end of the lower mold, a tube body is arranged on the top surface of the upper mold, and the bottom end of the tube body passes through the bottom surface of the upper mold and is fixedly connected to the bottom surface of the upper mold.

[0007] Furthermore, multiple insertion holes are provided at both ends of the top and bottom of any arc-shaped mold and at the top of any bottom mold, and multiple insertion rods are fixedly connected to both ends of the top and bottom of any arc-shaped mold and at the top of any bottom mold, and the insertion rods are movably inserted into adjacent insertion holes.

[0008] Furthermore, a positioning ring is fixedly connected to the top surface of the lower mold.

[0009] Furthermore, a connecting block is arranged below the upper mold, and a circular hole is opened at the center of the top surface of the connecting block, and the inner side wall of the circular hole is fixedly sleeved with the outer side wall of the tube body.

[0010] Furthermore, a plurality of positioning holes are provided on the bottom surface of the upper mold, and the insertion rods are movably inserted into adjacent positioning holes.

[0011] Furthermore, the other end of the lower mold is fixedly connected to an L-shaped frame, and the top end of the short arm of the L-shaped frame is fixedly connected to a cylinder, the movable end of the cylinder is fixedly connected to one side of a forming mold, and the bottom end of the other forming mold is fixedly connected to the top surface of the lower mold.

[0012] Furthermore, the lifting mechanism includes a U-shaped frame, and a protective shell is fixedly connected to the top surface of the U-shaped frame, an automatic winch is arranged inside the protective shell, and a pull rope is fixedly wound around the automatic winch, one end of the pull rope passes through the top surface of the U-shaped frame and is fixedly connected to the center of the top surface of the upper mold, the adjacent sides of the two arms of the U-shaped frame are fixedly connected to guide rails, the opposite sides of the upper mold are fixedly connected to clamping plates, and one end of the two clamping plates are respectively slidably clamped in the inside of the two guide rails.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The user manually selects two bottom molds to embed into the positioning ring, and then selects arc molds of appropriate specifications and quantity and stacks them on the two bottom molds in sequence to form a cylindrical mold. Then, the molten plastic is injected into the cylindrical mold by an injection molding machine, and compressed air is injected through the tube body to make the plastic close to the inner wall of the cylindrical mold to form a hollow sleeve-shaped plastic, and its shape is the same as the inner wall of the cylindrical mold. The hollow sleeve-shaped plastic is then placed into the molding mold and compressed gas is injected through the tube body again to make the hollow sleeve-shaped plastic close to the inner wall of the molding mold and cool it to obtain a finished product. In this way, the user can replace arc molds or bottom molds with different specifications of the inner wall to make a hollow sleeve-shaped plastic with a shape similar to the product, so that the hollow sleeve-shaped plastic is not prone to serious uneven thickness when it enters the molding mold and is inflated by compressed gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the neutralization forming die and the adjusting mechanism of the utility model;

[0017] Figure 3 It is an exploded diagram of the regulating mechanism structure in the utility model;

[0018] Figure 4 It is an exploded view of the lifting mechanism structure in the utility model.

[0019] In the figure: 100, lower mold; 101, gate; 102, positioning ring; 110, upper mold; 111, tube body; 112, connecting block; 113, positioning hole; 120, cylinder; 200, forming mold; 300, adjustment mechanism; 301, plug rod; 302, plug hole; 310, arc mold; 320, bottom mold; 321, injection port; 400, lifting mechanism; 410, U-shaped frame; 420, protective shell; 421, pull rope; 430, guide rail; 440, pallet. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0021] See also Figures 1 to 4 In an embodiment of the utility model, an injection blow stretch molding device for a packaging bottle includes an upper mold 110 and a lower mold 100, and the upper mold 110 is located above the lower mold 100, two molding molds 200 and an adjustment mechanism 300 are arranged between the upper mold 110 and the lower mold 100, and the upper mold 110 is equipped with a lifting mechanism 400;

[0022] The adjustment mechanism 300 includes multiple arc-shaped molds 310 and multiple bottom molds 320. An injection port 321 is opened at the center of one side of any bottom mold 320. A gate 101 is opened at one end of the lower mold 100. A tube body 111 is arranged on the top surface of the upper mold 110, and the bottom end of the tube body 111 passes through the bottom surface of the upper mold 110 and is fixedly connected to the bottom surface of the upper mold 110.

[0023] Specifically, the lower mold 100 is connected to the injection unit of the injection molding machine through a connecting piece, so that the nozzle of the injection molding machine is located at the gate 101, the specifications of the multiple arc molds 310 are different, and the inner arc surface sizes of the multiple arc molds 310 are different, the outer side wall sizes of the multiple arc molds 310 are equal, the inner bottom surface diameters of the multiple bottom molds 320 are different, and the bottom surface diameters of the multiple bottom molds 320 and the inner diameter of the positioning ring 102 are equal. When using, the user can select two bottom molds 320 of appropriate specifications to abut against each other, so that the two injection ports 321 are connected to each other and connected to the gate 101. 01 is connected, and then a suitable number of arc molds 310 are selected and stacked on the two bottom molds 320 in sequence, so that the multiple arc molds 310 and the two bottom molds 320 form a cylindrical mold, and then the lifting mechanism 400 is used to clamp and fix the cylindrical mold with the upper mold 110 and the lower mold 100, and the tube body 111 is located inside the cylindrical mold, and then the injection molding machine is started to inject the molten plastic from the gate 101 and inject it into the cylindrical mold through the two injection ports 321, and at the same time, the tube body 111 is used to inject compressed air into the cylindrical mold, so that the molten plastic flows along the circular The inner wall of the cylindrical mold is attached to form a hollow sleeve structure, and the plastic on the top of the cylindrical mold is attached to the upper mold 110, and then the upper mold 110 and the hollow sleeve-shaped plastic are driven to leave the cylindrical mold by the lifting mechanism 400, and then the lower mold 100 is moved to move the tube body 111 to the molding mold 200, and then the hollow sleeve-shaped plastic is placed in the molding mold 200 and compressed air is injected through the tube body 111, so that the hollow sleeve-shaped plastic is attached to the inner wall of the molding mold 200 for shaping, and then the molding mold 200 is cooled and the molding mold is closed. The plastic in 200 is shaped into a product, and then the product is taken out and trimmed. The user can manually replace the bottom mold 320 or the arc mold 310 on the cylindrical mold according to the shape requirements of the product, so as to adjust the shape of the hollow sleeve plastic shaped by the cylindrical mold, so that the hollow sleeve plastic is partially concave and partially convex. After the hollow sleeve plastic enters the forming mold 200, the hollow sleeve plastic can better fit the shape of the product, and is not prone to serious uneven thickness when blown against the inner wall of the forming mold 200 by compressed air, which is convenient for product production.

[0024] Embodiment 1

[0025] like Figure 1-3As shown, in the present embodiment, a plurality of insertion holes 302 are provided at both ends of the top and bottom of any arc-shaped mold 310 and at the top of any bottom mold 320, a plurality of insertion rods 301 are fixedly connected to both ends of the top and bottom of any arc-shaped mold 310 and at the top of any bottom mold 320, and the insertion rods 301 are movably inserted into adjacent insertion holes 302, a positioning ring 102 is fixedly connected to the top surface of the lower mold 100, a connecting block 112 is provided below the upper mold 110, and a circular hole is provided at the center of the top surface of the connecting block 112, and the inner side wall of the circular hole is fixedly sleeved with the outer side wall of the tube body 111, a plurality of positioning holes 113 are provided on the bottom surface of the upper mold 110, and the insertion rods 301 are movably inserted into adjacent positioning holes 113.

[0026] In this embodiment, when the user manually splices the cylindrical mold, the user can splice the two bottom molds 320 and place them inside the positioning ring 102 to limit the two bottom molds 320, and the user can insert the insertion rod 301 on any arc mold 310 into the insertion hole 302 on the adjacent arc mold 310 or the bottom mold 320 to position the cylindrical mold and prevent the arc mold 310 from moving. When the upper mold 110 is pressed down, the positioning hole 113 on the upper mold 110 can be inserted by the insertion rods 301 of the two uppermost arc molds 310 of the cylindrical mold to position the cylindrical mold. Then, after the molten plastic is injected into the cylindrical mold, the molten plastic can enter the space between the connecting block 112 and the upper mold 110 under the drive of compressed air to form a hollow sleeve-shaped plastic, which is convenient for the upper mold 110 to drive the hollow sleeve-shaped plastic to move out of the cylindrical mold.

[0027] like Figure 1-4 As shown, in this embodiment, the other end of the lower mold 100 is fixedly connected to an L-shaped frame, and the top of the short arm of the L-shaped frame is fixedly connected to a cylinder 120, the movable end of the cylinder 120 is fixedly connected to one side of a molding mold 200, and the bottom end of the other molding mold 200 is fixedly connected to the top surface of the lower mold 100.

[0028] During specific implementation, the user can drive a molding die 200 to move by opening and closing the cylinder 120, so that one molding die 200 is closed or separated from another molding die 200, so that the molding die 200 can wrap the hollow sleeve-shaped plastic to produce the product, or take out the product.

[0029] Embodiment 2

[0030] On the basis of the first embodiment, a lifting mechanism 400 is provided to control the movement of the upper mold 110 .

[0031] like Figure 4As shown, in this embodiment, the lifting mechanism 400 includes a U-shaped frame 410, and a protective shell 420 is fixedly connected to the top surface of the U-shaped frame 410, an automatic winch is arranged inside the protective shell 420, and a pull rope 421 is fixedly wound around the automatic winch, one end of the pull rope 421 passes through the top surface of the U-shaped frame 410 and is fixedly connected to the center of the top surface of the upper mold 110, the adjacent sides of the two arms of the U-shaped frame 410 are fixedly connected to the guide rails 430, the opposite sides of the upper mold 110 are fixedly connected to the clamping plates 440, and one end of the two clamping plates 440 are respectively slidably clamped in the inside of the two guide rails 430.

[0032] In specific implementation, the U-shaped frame 410 can be installed on the ground or other fixed equipment through a connecting piece, and it does not move itself. After the cylindrical mold is manually spliced ​​by the user, the user can start the automatic winch to drive the pull rope 421 to lower it, so that the upper mold 110 is pressed on the cylindrical mold and the molding mold 200 due to its own weight, and then after the hollow sleeve-shaped plastic inside the cylindrical mold is formed, the automatic winch is started to drive the pull rope 421 to pull up the upper mold 110, so that the hollow sleeve-shaped plastic is separated from the cylindrical mold, and then the lower mold 100 is driven to move by the injection unit of the injection molding machine, so that the two molding molds 200 are moved to the tube. The cylinder 120 is then started to drive one molding mold 200 to separate from the other molding mold 200, and then the automatic winch is started to drive the hollow sleeve-shaped plastic to move between the two molding molds 200, and then the cylinder 120 is started again to cooperate with the injection unit of the injection molding machine to move, so that the two molding molds 200 wrap the hollow sleeve-shaped plastic, and then compressed air is injected through the tube body 111 to make the hollow sleeve-shaped plastic close to the inner walls of the two molding molds 200, and the cooling water channel on the molding mold 200 is used to cool the plastic inside the molding mold 200, so as to form the product.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An injection blow molding device for packaging bottles, comprising an upper mold (110) and a lower mold (100), wherein the upper mold (110) is located above the lower mold (100), characterized in that: Two molding dies (200) and an adjustment mechanism (300) are arranged between the upper die (110) and the lower die (100), and the upper die (110) is matched with a lifting mechanism (400); The adjustment mechanism (300) comprises a plurality of arc-shaped moulds (310) and a plurality of bottom moulds (320), an injection port (321) is provided at the centre of one side of any bottom mould (320), a gate (101) is provided at one end of the bottom mould (100), a tube body (111) is provided on the top surface of the upper mould (110), and the bottom end of the tube body (111) penetrates through the bottom surface of the upper mould (110) and is fixedly connected to the bottom surface of the upper mould (110).

2. The injection blow stretch molding device for packaging bottles according to claim 1, characterized in that: A plurality of insertion holes (302) are provided at both ends of the top and bottom of any arc-shaped mold (310) and at the top of any bottom mold (320), and a plurality of insertion rods (301) are fixedly connected to both ends of the top and bottom of any arc-shaped mold (310) and at the top of any bottom mold (320), and the insertion rods (301) are movably inserted into adjacent insertion holes (302).

3. The injection blow stretch molding device for packaging bottles according to claim 2, characterized in that: A positioning ring (102) is fixedly connected to the top surface of the lower mold (100).

4. The injection blow stretch molding device for packaging bottles according to claim 3, characterized in that: A connecting block (112) is provided below the upper mold (110), and a circular hole is provided at the center of the top surface of the connecting block (112), and the inner side wall of the circular hole is fixedly sleeved with the outer side wall of the tube body (111).

5. The injection blow stretch molding device for packaging bottles according to claim 4, characterized in that: The bottom surface of the upper mold (110) is provided with a plurality of positioning holes (113), and the insertion rods (301) are movably inserted into adjacent positioning holes (113).

6. The injection blow stretch molding device for packaging bottles according to claim 5, characterized in that: The other end of the lower mold (100) is fixedly connected to an L-shaped frame, and the top end of the short arm of the L-shaped frame is fixedly connected to a cylinder (120), the movable end of the cylinder (120) is fixedly connected to one side of a molding mold (200), and the bottom end of the other molding mold (200) is fixedly connected to the top surface of the lower mold (100).

7. The injection blow stretch molding device for packaging bottles according to claim 6, characterized in that: The lifting mechanism (400) comprises a U-shaped frame (410), and a protective shell (420) is fixedly connected to the top surface of the U-shaped frame (410), an automatic winch is arranged inside the protective shell (420), and a pull rope (421) is fixedly wound around the automatic winch, one end of the pull rope (421) passes through the top surface of the U-shaped frame (410) and is fixedly connected to the center of the top surface of the upper mold (110), the adjacent sides of the two arms of the U-shaped frame (410) are fixedly connected to guide rails (430), the opposite sides of the upper mold (110) are fixedly connected to clamping plates (440), and one end of the two clamping plates (440) is respectively slidably clamped inside the two guide rails (430).

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