Plastic bottle blank demolding and discharging device

Abstract

The utility model relates to the technical field of plastic bottle blanks, and discloses a plastic bottle blank demolding and discharging device which comprises a second air cylinder and a mold, the output end of the second air cylinder is fixedly provided with a mold core, the outer wall of the output end of the second air cylinder is fixedly connected with a first electromagnet, and the outer wall of the mold core is slidably connected with a permanent magnet. A clamp is arranged outside the mold core, a vacuum pump is arranged on the upper side of the clamp, a second electromagnet is fixedly connected to the side, close to the second air cylinder, of the clamp, the mold core penetrates through the second electromagnet, a first air cylinder is arranged on one side of the clamp, and third air cylinders are fixedly arranged on the two sides of the mold. The device comprises a cylinder III, a die, a cylinder II, a cylinder I, a clamp, an electromagnet I, a permanent magnet, an electromagnet II, a die core and a vacuum pump, the problems that an existing ejection mechanism is not uniform in ejection force, and when large-size or thin-wall bottle preforms are ejected, the bottle preforms deform are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to plastic bottle embryo technical field especially relates to a plastic bottle embryo demolding and discharging device. BACKGROUND

[0002] The plastic bottle is mainly made of polyethylene or polypropylene and a plurality of organic solvents, and is made after adding a plurality of organic solvents, and is made of polyester, polyethylene and polypropylene as raw materials, and is made after adding corresponding organic solvents, and is made through blow molding, extrusion blow or injection molding after high-temperature heating through a plastic mold, and is mainly used for beverage, food, pickles, honey, dried fruit, edible oil, agricultural and veterinary drug liquid or solid disposable plastic packaging containers. The plastic bottle has the characteristics of not easy to break, low cost, high transparency, food-grade raw materials and the like.

[0003] In the prior art, when producing the plastic bottle, the plastic bottle embryo needs to be blown in the mold, but when demolding the plastic bottle embryo, the formed bottle embryo is usually pushed out from the mold by the ejection mechanism. However, the current ejection mechanism has the problem of uneven ejection force or unreasonable distribution of ejection points, which may cause deformation of the bottle embryo when the bottle embryo with large size or thin wall is ejected. UTILITY MODEL CONTENT

[0004] In order to make up for the above shortcomings, the utility model provides a plastic bottle embryo demolding and discharging device, which aims to solve the problem of uneven ejection force of the current ejection mechanism, which may cause deformation of the bottle embryo when the bottle embryo with large size or thin wall is ejected.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a plastic bottle embryo demolding and discharging device, comprising a cylinder two and a mold, the output end of the cylinder two is fixedly provided with a mold core, the outer wall of the output end of the cylinder two is fixedly connected with an electromagnet one, the outer wall of the mold core is slidably connected with a permanent magnet, the outside of the mold core is provided with a clamp, the upper side of the clamp is provided with a vacuum pump, the side of the clamp close to the cylinder two is fixedly connected with an electromagnet two, the mold core passes through the electromagnet two, one side of the clamp is provided with a cylinder one, and the two sides of the mold are both fixedly provided with a cylinder three.

[0006] Preferably, the side of the permanent magnet away from the electromagnet one is provided with a heat insulation layer.

[0007] Preferably, the front of the cylinder one is provided with a conveying belt, and the mold core and the clamp are in interference fit.

[0008] Preferably, the right side of the mold is provided with a mold cavity, the mold core is arranged in the inside of the mold cavity, and the mold core and the mold cavity are in interference fit.

[0009] Preferably, the inside of the mold is provided with a connecting pipe, and one end of the connecting pipe is arranged on the side of the mold cavity away from the mold core.

[0010] Preferably, an injection tube is slidably connected to one side of the mold, and the other end of the connecting tube is attached to one side of the injection tube.

[0011] Preferably, a locking block is fixedly connected to the outer wall of the output end of the second cylinder, and the locking block is disposed between the permanent magnet and the first electromagnet.

[0012] Preferably, a controller is provided on one side of one of the cylinders three, and the controller is electrically connected to cylinder one, vacuum pump, conveyor belt, cylinder two, electromagnet one, electromagnet two, and cylinder three.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the mold is separated by the drive of the three output ends of the cylinder, so that the preform is demolded from the mold; the preform is demolded from the mold core by the second cylinder, the first cylinder, the clamp, the first electromagnet, the permanent magnet, the second electromagnet, the mold core and the vacuum pump; thus solving the problem that the current ejection mechanism has uneven ejection force, which causes the preform to deform when ejecting preforms with large size or thin wall.

[0015] 2. In this utility model, the effect of high temperature on the magnetic force of permanent magnet is reduced by the heat insulation layer. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a plastic preform demolding and discharging device proposed in this utility model;

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 This is a schematic diagram of the mold cross-section structure of a plastic preform demolding and discharging device proposed in this utility model;

[0019] Figure 4 for Figure 3 Enlarged diagram of point B in the middle.

[0020] Legend:

[0021] 1. Mold; 2. Mold cavity; 3. Cylinder 1; 4. Vacuum pump; 5. Conveyor belt; 6. Cylinder 2; 7. Electromagnet 1; 8. Electromagnet 2; 9. Fixture; 10. Controller; 11. Cylinder 3; 12. Injection tube; 13. Clamping block; 14. Permanent magnet; 15. Mold core; 16. Connecting pipe; 17. Heat insulation layer. Detailed Implementation

[0022] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Reference Figures 1-3 An embodiment of this utility model provides a plastic preform demolding and discharging device, including a second cylinder 6 and a mold 1. A mold core 15 is fixedly provided at the output end of the second cylinder 6. An electromagnet 7 is fixedly connected to the outer wall of the output end of the second cylinder 6. A permanent magnet 14 is slidably connected to the outer wall of the mold core 15. A clamp 9 is provided outside the mold core 15. A vacuum pump 4 is provided on the upper side of the clamp 9. An electromagnet 8 is fixedly connected to the side of the clamp 9 near the second cylinder 6. The mold core 15 passes through the electromagnet 8. A first cylinder 3 is provided on one side of the clamp 9. Cylinders 3 11 are fixedly provided on both sides of the mold 1.

[0024] In this embodiment, Figure 1 The orientation is indicated by front, back, left, and right. Specifically, mold 1 has two parts. After the preform is injected and cooled, the two mold parts 1 are separated by the output end of cylinder 3 11, allowing the preform to be demolded from mold 1. The preform is moved to the right by the retraction of the output end of cylinder 2 6. The clamp 9 is moved forward by the extension of the output end of cylinder 1 3, so that the right side of the clamp 9 is opposite to the output end of cylinder 2 6. The preform is then slid into the interior of the clamp 9 by the extension of the output end of cylinder 2 6. Finally, electromagnet 1 7 is activated, causing it to interact with permanent magnet 14. A repulsive force is generated between the two. By activating electromagnet 28, an attractive force is generated between it and permanent magnet 14. Through the sliding connection between permanent magnet 14 and mold core 15, permanent magnet 14 slides to the left, applying force to the bottle mouth of the preform. By activating vacuum pump 4, a negative pressure is generated inside clamp 9, which adsorbs the bottle body of the preform, thus completing the demolding of the preform from mold core 15. This solves the problem of uneven ejection force in the current ejection mechanism, which causes deformation of the preform when ejecting preforms with large size or thin walls.

[0025] Reference Figure 4 A heat insulation layer 17 is provided on the side of the permanent magnet 14 away from the electromagnet 7.

[0026] Specifically, the heat insulation layer 17 reduces the impact of high temperature on the magnetism of the permanent magnet 14.

[0027] Reference Figures 1-3 A conveyor belt 5 is installed in front of cylinder 3, and the mold core 15 and fixture 9 are interference-fitted.

[0028] Specifically, the cylinder one 3 is a rotary telescopic cylinder, which can be telescopic and right-angled rotary, which is the prior art; after the bottle embryo is demolded from the mold core 15, the bottle embryo is adsorbed by the negative pressure in the clamp 9, and the clamp 9 is driven to move backward and rotate by the contraction of the output end of the cylinder one 3, so that the right side of the clamp 9 faces the upper side of the conveying belt 5; the negative pressure in the clamp 9 disappears by closing the vacuum pump 4, and then the bottle embryo in the clamp 9 falls onto the conveying belt 5 under the action of gravity, thereby completing the discharge of the bottle embryo.

[0029] With reference to Figures 1-3 , the right side of the mold 1 is provided with a mold cavity 2, and the mold core 15 is arranged in the mold cavity 2; the mold core 15 and the mold cavity 2 are in interference fit.

[0030] Specifically, when the two molds 1 are combined together, a complete mold cavity 2 is formed on the abutting side wall, and the mold cavity 2 and the mold core 15 are in interference fit, so that the injection liquid during injection filling is between the mold cavity 2 and the mold core 15, thereby realizing the molding of the bottle embryo.

[0031] With reference to Figure 3 , the mold 1 is provided with a connecting pipe 16, one end of the connecting pipe 16 being arranged on the side of the mold cavity 2 away from the mold core 15.

[0032] Specifically, the injection liquid enters the mold cavity 2 through the connecting pipe 16, thereby realizing the injection operation process.

[0033] With reference to Figure 3 , the mold 1 is slidably connected with an injection pipe 12 on one side, and the other end of the connecting pipe 16 is abutted with one side of the injection pipe 12.

[0034] Specifically, when injection is performed, the injection pipe 12 slides into the mold 1 and is abutted with the other end of the mold core 15; the injection liquid enters the connecting pipe 16 through the injection pipe 12, thereby realizing the injection of the injection liquid.

[0035] With reference to Figures 1-3 , the output end of the cylinder two 6 is fixedly connected with a clamping block 13, and the clamping block 13 is arranged between the permanent magnet 14 and the electromagnet one 7.

[0036] Specifically, when the bottle embryo is molded and injected, the mold core 15 is inserted into the mold cavity 2 by the extension of the output end of the cylinder two 6, and the bottle mouth of the bottle embryo is molded by the abutment of the permanent magnet 14 and the mold 1; in this process, the permanent magnet 14 and the mold 1 are in abutting and sealing effect by the interference of the clamping block 13 on the permanent magnet 14.

[0037] With reference to Figures 1-3The side of the cylinder three 11 is provided with a controller 10, and the controller 10 is electrically connected with the cylinder one 3, the vacuum pump 4, the conveying belt 5, the cylinder two 6, the electromagnet one 7, the electromagnet two 8 and the cylinder three 11.

[0038] Specifically, the controller 10 controls the cylinder three 11 to realize the demolding of the bottle embryo from the mold 1; the controller 10 controls the cooperation between the cylinder one 3, the cylinder two 6, the electromagnet one 7, the electromagnet two 8 and the vacuum pump 4 to realize the demolding of the bottle embryo from the mold core 15; and the controller 10 controls the cooperation between the vacuum pump 4, the cylinder one 3 and the conveying belt 5 to realize the ejection of the bottle embryo.

[0039] Working principle: when injection molding, the injection tube 12 slides into the mold 1, and is attached to one end of the connecting tube 16, the injection liquid enters the connecting tube 16 through the injection tube 12, and then enters the mold cavity 2, and the mold cavity 2 and the mold core 15 are in interference fit, so that the injection liquid during injection is filled between the mold cavity 2 and the mold core 15, thereby completing the molding of the bottle embryo.

[0040] When demolding, the controller 10 controls the cylinder three 11 output end to drive the mold 1 to be separated, so that the bottle embryo is demolded from the mold 1, the cylinder two 6 output end is retracted to move the bottle embryo to the right, the cylinder one 3 output end is extended to move the clamp 9 forward, so that the right side of the clamp 9 is opposite to the output end of the cylinder two 6, the cylinder two 6 output end is extended to slide the bottle embryo to the inside of the clamp 9, the electromagnet one 7 is started to generate repulsion between the electromagnet one 7 and the permanent magnet 14, the electromagnet two 8 is started to generate attraction between the electromagnet two 8 and the permanent magnet 14, and the permanent magnet 14 and the mold core 15 are slidably connected, so that the permanent magnet 14 slides to the left to apply force to the bottle mouth of the bottle embryo, and the vacuum pump 4 is started to generate negative pressure in the clamp 9 to adsorb the bottle body of the bottle embryo, thereby completing the demolding of the bottle embryo from the mold core 15.

[0041] When ejection, the controller 10 controls the cylinder one 3 output end to retract to drive the clamp 9 to move backward and rotate, so that the right side of the clamp 9 is opposite to the upper side of the conveying belt 5, the vacuum pump 4 is closed to make the negative pressure in the clamp 9 disappear, and the bottle embryo in the clamp 9 falls onto the conveying belt 5 under the action of gravity, thereby completing the ejection of the bottle embryo, so as to solve the problem that the ejecting force of the current ejecting mechanism is uneven, and the bottle embryo is deformed when the ejecting size is large or the wall is thin.

[0042] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A plastic preform demolding and unloading device, comprising a cylinder (6) and a mold (1), characterized in that: The output end of the cylinder 2 (6) is fixedly provided with a mold core (15). The outer wall of the output end of the cylinder 2 (6) is fixedly connected with an electromagnet 1 (7). The outer wall of the mold core (15) is slidably connected with a permanent magnet (14). A clamp (9) is provided on the outside of the mold core (15). A vacuum pump (4) is provided on the upper side of the clamp (9). An electromagnet 2 (8) is fixedly connected on the side of the clamp (9) near the cylinder 2 (6). The mold core (15) passes through the electromagnet 2 (8). A cylinder 1 (3) is provided on one side of the clamp (9). Cylinder 3 (11) is fixedly provided on both sides of the mold (1).

2. The plastic preform demolding and discharging device according to claim 1, characterized in that: A heat insulation layer (17) is provided on the side of the permanent magnet (14) away from the electromagnet (7).

3. The plastic preform demolding and discharging device according to claim 1, characterized in that: A conveyor belt (5) is provided in front of the cylinder (3), and the mold core (15) and the fixture (9) are interference fit.

4. The plastic preform demolding and discharging device according to claim 1, characterized in that: The mold (1) has a mold cavity (2) on its right side, and the mold core (15) is located inside the mold cavity (2). The mold core (15) and the mold cavity (2) are interference-fitted.

5. The plastic preform demolding and discharging device according to claim 1, characterized in that: The mold (1) is provided with a connecting pipe (16) inside, and one end of the connecting pipe (16) is located on the side of the mold cavity (2) away from the mold core (15).

6. The plastic preform demolding and discharging device according to claim 5, characterized in that: The mold (1) is slidably connected to one side of an injection tube (12), and the other end of the connecting tube (16) is attached to one side of the injection tube (12).

7. The plastic preform demolding and discharging device according to claim 1, characterized in that: A locking block (13) is fixedly connected to the outer wall of the output end of the cylinder two (6), and the locking block (13) is located between the permanent magnet (14) and the electromagnet one (7).

8. The plastic preform demolding and discharging device according to claim 1, characterized in that: A controller (10) is provided on one side of one of the cylinders (11), and the controller (10) is electrically connected to cylinder (3), vacuum pump (4), conveyor belt (5), cylinder (6), electromagnet (7), electromagnet (8), and cylinder (11).

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