Special bottle preform high-speed manipulator with cooling function

Abstract

The utility model discloses a special high-speed manipulator for a bottle preform with a cooling function, which comprises a bottle preform jig arranged on a rack, the bottle preform jig is provided with a plurality of preform taking cylinders, the rack is provided with a moving mechanism and a rotating mechanism, the rotating mechanism is connected with the bottle preform jig and drives the bottle preform jig to rotate, and the preform taking cylinders are arranged on the moving mechanism. The rotating mechanism is arranged on the moving mechanism, and the moving mechanism drives the rotating mechanism and the bottle preform jig to move back and forth; the bottle preform jig is provided with a cooling main pipeline and a plurality of cooling branch pipelines which are connected with each other, and the cooling branch pipelines pass through the interior of the preform taking cylinder in a one-to-one correspondence mode. According to the high-speed manipulator special for the bottle preform and with the cooling function, the production efficiency of a bottle preform injection system is improved in a more economical manner, the cost of the preform injection system is reduced, pollution and scratches possibly occurring in the ejection and falling process of products are avoided, and the appearance quality and cleanliness of the products are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a high-speed manipulator dedicated to bottle preforms with a cooling function. Background Art

[0002] With the booming growth of industries like food and healthcare, the demand for production efficiency in preform injection molding equipment is increasing. Traditionally, the primary method for improving production efficiency has been to increase the number of mold cavities, from 24 and 48 cavities in the early days to 96 and 128 cavities today. While this continuous increase in mold cavities can directly improve production efficiency, it also places higher demands on machine tonnage and mold complexity. For preform manufacturers, complex molds and large-tonnage injection molding machines mean high equipment costs, making this unacceptable to many small and medium-sized preform manufacturers.

[0003] On the other hand, industries such as food and medical also have extremely high requirements for the appearance quality and cleanliness of products. The traditional direct ejection method is easy to be contaminated by oil stains on the injection molding machine during the product falling process, which will contaminate the product; the falling process is also easy to cause scratches on the product, affecting the product yield.

[0004] Therefore, it is necessary to solve the above technical problems. Summary of the Invention

[0005] In response to the above technical problems, the utility model provides a high-speed manipulator for preforms with a cooling function, which improves the production efficiency of the preform injection system in a more economical way, reduces the cost of the preform injection system, and avoids the contamination and scratches that may occur in the product during the ejection and falling process, thereby improving the appearance quality and cleanliness of the product.

[0006] In order to achieve the above purpose, the technical solution of the utility model is:

[0007] A high-speed robot arm for preforms with a cooling function includes a preform jig mounted on a frame. The preform jig is provided with a plurality of preform removal cylinders. The frame is provided with a moving mechanism and a rotating mechanism. The rotating mechanism is connected to the preform jig and drives it to rotate. The rotating mechanism is mounted on the moving mechanism and drives the rotating mechanism and the preform jig to move back and forth. The preform jig is provided with a main cooling pipeline and a plurality of cooling branch pipelines connected to each other. The cooling branch pipelines pass through the interior of the preform removal cylinders in a one-to-one correspondence.

[0008] The high-speed mechanical hand with cooling function is used to take out the bottle preform product on the moving mold of the injection molding machine, and the bottle preform product is cooled in the bottle preform jig through the cooling sub-pipeline in the taking-out cylinder. The injection molding machine can continue the production of the next mold, and the cooling of the bottle preform product is not required to wait on the injection molding machine. The production efficiency of the whole bottle preform system is improved. Meanwhile, the pollution and scratches caused by the falling process of the product are avoided, and the appearance quality and cleanliness of the bottle preform product are improved.

[0009] Further optimization scheme, the cooling main pipeline includes a cooling liquid inlet and a cooling liquid outlet, which are respectively arranged at the head end of the bottle preform jig. The cooling main pipeline is provided with the cooling liquid inlet and the cooling liquid outlet to facilitate the pipeline connection of the external cooling device.

[0010] Further optimization scheme, the bottle preform jig is provided with a gas main pipeline and a plurality of gas sub-pipelines connected with each other, and the gas sub-pipelines are connected with the tail portions of the taking-out cylinders one by one. The gas main pipeline and the gas sub-pipeline corresponding to each taking-out cylinder are arranged in the bottle preform jig, and the vacuum or gas blowing is performed according to the requirement, so that the injection molding bottle preform is taken out from the injection mold, and the cooled bottle preform is blown off from the bottle preform jig.

[0011] Further optimization scheme, the gas main pipeline is provided with a gas inlet and outlet located at the head end of the bottle preform jig. The gas main pipeline is provided with the gas inlet and outlet to facilitate the gas pipeline connection of the external gas device.

[0012] Further optimization scheme, further including a cooling system, and the cooling main pipeline is connected with the cooling system. The cooling system can be a cooling system of the whole factory, such as a water chiller, or a cooling system separately provided for the mechanical hand.

[0013] Further optimization scheme, further including a dehumidification system, and the top of the rack is provided with a dehumidification air duct connected with the dehumidification system. The dehumidification system can reduce the condensate water generated in the cooling process of the bottle preform product, keep the cooling system dry, improve the cooling efficiency of the bottle preform product, and the dehumidification system can be a dehumidifier.

[0014] Further optimization scheme, the lower part of the rack is provided with a vacuum pump and a vacuum tank connected with each other, and the vacuum tank pipeline is connected with the gas main pipeline. The vacuum pump and the vacuum tank are used to supply the negative pressure gas required for taking out the bottle preform.

[0015] Further optimization scheme, the lower part of the rack is provided with a positive pressure gas tank, and the positive pressure gas tank pipeline is connected with the gas main pipeline. The positive pressure gas tank is used to supply the positive pressure gas required for falling the bottle preform, and the positive pressure gas tank can be connected with the gas source of the factory.

[0016] In a further optimized solution, the moving mechanism comprises a first servo motor, a speed reducer, a driving synchronous pulley, a synchronous belt, and a driven synchronous pulley connected in sequence. It also includes a toothed plate, a movable plate, and a linear guide. The synchronous belt is connected to the movable plate via the toothed plate, and the linear guide is connected to the movable plate to guide and constrain its reciprocating motion. The moving mechanism drives the synchronous belt through the rotation of the first servo motor, thereby driving the toothed plate and the connected movable plate to move back and forth on the linear guide.

[0017] In a further optimized solution, the rotation mechanism includes a second servo motor, a drive shaft, and a transition plate connected in sequence. The preform jig is connected to the drive shaft via the transition plate. Rotation of the second servo motor drives the drive shaft, which in turn drives the preform jig via the transition plate, thereby discharging the preformed product from the preform jig's cup removal tube.

[0018] According to a further optimized solution, the moving mechanism further includes a pallet seat and a plurality of columns, the linear guide rail is arranged on the pallet seat, and the pallet seat is arranged on the frame through the columns.

[0019] A further optimized solution further includes a conveyor belt, which carries and transports the cooled preforms in the preform jig, and transports the preform products out for packaging via the conveyor belt.

[0020] Compared with the prior art, the present invention has the following technical advantages:

[0021] The cooling time of preform products accounts for a large proportion of the production process, usually 50% to 60% of the entire cycle. Therefore, if the cooling step can be synchronized with other actions of the injection molding machine, the production efficiency of the preform injection system can be greatly improved.

[0022] The high-speed robot with cooling function for preforms disclosed in this utility model can remove products before they are completely cooled and continue cooling them in the robot fixture, thereby improving the production efficiency of the preform injection system. This greatly improves the production efficiency of preforms with relatively low equipment costs, while avoiding contamination and scratches that may occur during the ejection and dropping process of the products. The details are as follows:

[0023] 1. The preform injection system of the injection molding machine saves the cooling time of the preform during production, and improves the production efficiency of the preform injection system by nearly 50%;

[0024] 2. Compared with increasing the number of mold cavities of the injection molding machine, the cost of the robot is low;

[0025] 3. The preform product is taken out by the preform fixture and does not come into contact with other parts of the injection molding machine, thus avoiding contamination and scratches by oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a special high-speed mechanical hand for bottle embryo with cooling function according to the embodiment of the utility model;

[0027] Figure 2 is Figure 1 the three-dimensional view of the moving mechanism and the rotating mechanism in the embodiment;

[0028] Figure 3 is Figure 1 the three-dimensional view of the mechanical hand and the injection molding machine connected together in the embodiment;

[0029] Figure 4 is Figure 1 the three-dimensional view of the mechanical hand taking bottle embryo on the mold of the injection molding machine in the embodiment;

[0030] Figure 5 is Figure 1 the three-dimensional view of the mechanical hand turning over the bottle embryo fixture and dropping the bottle embryo on the conveying belt in the embodiment.

[0031] In the drawing: frame 1, bottom foot 1a, bottle embryo fixture 2, embryo taking cylinder 2a, cooling liquid inlet 2b, cooling liquid outlet 2c, gas inlet and outlet 2d, moving mechanism 3, first servo motor 3a, speed reducer 3b, driving synchronous wheel 3c, synchronous belt 3d, driven synchronous wheel 3e, toothed plate 3f, movable plate 3g, linear guide rail 3h, supporting plate seat 3i, stand column 3j, rotating mechanism 4, second servo motor 4a, transmission shaft 4b, transition plate 4c, dehumidification air duct 5, vacuum pump 6, vacuum tank 7, positive pressure gas tank 8, conveying belt 9, injection molding machine A, movable mold A1, fixed mold A2. DETAILED DESCRIPTION

[0032] The utility model will be further explained in detail in combination with the embodiment in the drawing.

[0033] As Figures 1 to 5 shown, the utility model discloses a special high-speed mechanical hand for bottle embryo with cooling function according to the embodiment.

[0034] As Figure 1 and Figure 2 shown, the special high-speed mechanical hand for bottle embryo with cooling function according to the embodiment, including setting bottle embryo fixture 2 on frame 1, frame 1 is fixed on the ground through a plurality of bottom feet 1a, bottle embryo fixture 2 is equipped with a plurality of embryo taking cylinder 2a, and the embryo taking cylinder 2a on bottle embryo fixture 2 corresponds with bottle embryo mould on injection molding machine A mould, frame 1 is equipped with moving mechanism 3 and rotating mechanism 4, rotating mechanism 4 is connected with bottle embryo fixture 2 and drives it to rotate, rotating mechanism 4 is arranged on moving mechanism 3, and moving mechanism 3 drives rotating mechanism 4 and bottle embryo fixture 2 to move back and forth, bottle embryo fixture 2 is equipped with cooling main pipeline and a plurality of cooling branch pipelines connected with each other, and the cooling branch pipeline passes through the inside of embryo taking cylinder 2a one by one.

[0035] This high-speed robot dedicated to preforms with cooling function takes another approach. It removes the uncooled preform products from the injection molding machine mold through the preform fixture, and continues to cool them in the preform fixture through the cooling branch pipes in the preform removal cylinder. The injection molding machine can continue to produce the next mold without waiting for the preform products to be completely cooled on the injection molding machine. This improves the production efficiency of the entire preform injection system and avoids possible contamination and scratches caused by the products falling during ejection, thereby improving the appearance quality and cleanliness of the preform products.

[0036] like Figure 2 As shown, the cooling main pipeline includes a coolant inlet 2b and a coolant outlet 2c, which are respectively arranged at the head end of the preform fixture 2. The cooling main pipeline is provided with a coolant inlet and a coolant outlet to facilitate the connection of the pipeline to an external cooling device.

[0037] like Figure 2 As shown, the preform jig 2 is equipped with an interconnected main gas pipeline and several branch gas pipelines, each of which is connected to the rear end of the preform removal cylinder 2a. The main gas pipeline and branch gas pipelines corresponding to each preform removal cylinder are set up inside the preform jig. Vacuuming or blowing air as needed to remove the injected preforms from the injection mold and blow the cooled preforms off the preform jig.

[0038] like Figure 2 As shown, the gas main pipeline is provided with a gas inlet and outlet 2d, which is located at the head end of the preform fixture 2. The gas main pipeline is provided with a gas inlet and outlet to facilitate the gas circuit to be connected to external gas equipment.

[0039] like Figure 1 As shown, the high-speed preform-specific robot with cooling function in this embodiment also includes a cooling system, and the cooling main pipeline is connected to the cooling system. The cooling system can be the cooling system of the entire factory, such as a chiller, or it can be a cooling system that supplies cooling to the robot separately.

[0040] like Figure 1 As shown, the high-speed preform cooling robot of this embodiment also includes a dehumidification system. A dehumidification duct 5 is provided on the top of the frame 1 and is connected to the dehumidification system. The dehumidification system reduces condensation generated during the cooling of preform products during production, maintains dryness in the cooling system, and improves the cooling efficiency of the preform products. A dehumidifier can be used as the dehumidification system.

[0041] like Figure 1 As shown, the lower part of the frame 1 is provided with a vacuum pump 6 and a vacuum tank 7 connected to each other, and the vacuum tank 7 is connected to the gas main pipeline. The vacuum pump and the vacuum tank are used to supply the negative pressure gas required for embryo retrieval.

[0042] like Figure 1As shown, a positive pressure gas tank 8 is provided at the bottom of the frame 1, and a pipeline of the positive pressure gas tank 8 is connected to the gas main pipeline. The positive pressure gas tank is used to supply the positive pressure gas required for embryo drop, and the positive pressure gas tank can be connected to the gas source of the factory.

[0043] like Figure 2 As shown, the moving mechanism 3 comprises a first servo motor 3a, a speed reducer 3b, a driving synchronous pulley 3c, a timing belt 3d, and a driven synchronous pulley 3e, connected in sequence. It also includes a toothed plate 3f, a movable plate 3g, and a linear guide 3h. The timing belt 3d is connected to the movable plate 3g via the toothed plate 3f, and the linear guide 3h is connected to the movable plate 3g, guiding and constraining its reciprocating motion. The rotation of the first servo motor drives the timing belt, which in turn drives the toothed plate and its connected movable plate to move back and forth on the linear guide.

[0044] like Figure 2 As shown, the rotating mechanism 4 includes a second servo motor 4a, a transmission shaft 4b, and a transition plate 4c, which are connected in sequence. The preform jig 2 is connected to the transmission shaft 4b via the transition plate 4c, and the transmission shaft 4b is connected to the second servo motor 4a via a bearing. The rotation of the second servo motor drives the transmission shaft, which in turn drives the preform jig via the transition plate, thereby discharging the preformed product from the preform jig's cup removal tube.

[0045] like Figure 2 As shown, the moving mechanism 3 further includes a pallet seat 3i and a plurality of columns 3j. The linear guide rail 3h is arranged on the pallet seat 3i, and the pallet seat 3i is arranged on the frame 1 through the columns 3j.

[0046] like Figure 3 As shown, the high-speed robot arm dedicated to preforms with a cooling function in this embodiment further includes a conveyor belt 9 , which carries and conveys the cooled preforms in the preform jig 2 . Figure 3 The robot shown is connected to the injection molding machine A, and the preformed bottle products are transported out for packaging via the conveyor belt 9.

[0047] like Figure 4 As shown, the preform product is injected into the injection molding machine A and is in the mold opening state. The preform jig 2 is moved between the movable mold A1 and the fixed mold A2 of the injection molding machine A by the moving mechanism 3. The cup-taking cylinder of the preform jig 2 is aligned with the preform product on the movable mold A1. The ejector pin of the injection molding machine A ejects the preform. At the same time, the preform-taking cylinder 2a of the preform jig 2 is vacuumed and the preform is sucked into the preform-taking cylinder 2a.

[0048] like Figure 5 As shown, the moving mechanism 3 of the manipulator moves the preform fixture 2 to the top of the conveyor belt 9 , the rotating mechanism 4 is activated, the second servo motor 4 a rotates, and the preform fixture 2 is flipped 90 degrees, and the preform product is dropped onto the conveyor belt 9 .

[0049] The working process of the high-speed robot for preforms with cooling function in this embodiment is as follows:

[0050] 1. After the injection molding machine is finished, the moving mechanism drives the preform fixture forward to align with the mold. Figure 4 As shown;

[0051] 2. The ejector of the injection molding machine ejects the preform. At the same time, the preform removal cylinder of the preform fixture is vacuumed and the preform is sucked into the cylinder.

[0052] 3. The moving mechanism drives the preform fixture to retreat and exit the mold area to continue cooling. At this time, the injection molding machine can continue to close the mold to produce the next mold;

[0053] 4. After the preform product is cooled, the rotating mechanism rotates and drives the preform fixture to flip 90 degrees. After the flip is completed, the vacuum in the preform cylinder is cut off and positive pressure gas is supplied to blow the preform out. At this time, the preform falls on the conveyor belt and is transported out for packaging. Figure 5 As shown;

[0054] 5. After the preform is dropped, the rotating mechanism drives the preform fixture to rotate 90 degrees in the opposite direction to return to its initial state, waiting for the injection molding machine to move to the next cycle.

[0055] The cooling time of preform products accounts for a large proportion of the production process, usually 50% to 60% of the entire cycle. Therefore, the cooling step can be synchronized with other actions of the injection molding machine to greatly improve the production efficiency of the preform injection system.

[0056] Both the moving mechanism and the rotating mechanism are equipped with high-speed and high-response servo motors to shorten the time of entering and exiting the mold area when removing the parts, thereby shortening the overall cycle time of the embryo injection system.

[0057] Movable parts such as preform jigs and movable plates all use lightweight designs (such as using aluminum alloy materials and adding weight-reducing holes). While ensuring strength, the weight is reduced as much as possible to reduce inertia during high-speed operation, making the robot run more smoothly.

[0058] The high-speed robot arm for preforms with a cooling function disclosed in the utility model can remove products before they are completely cooled, and continue cooling them in the robot arm fixture, thereby improving the production efficiency of the preform injection system; it greatly improves the production efficiency of preform products with a relatively low equipment cost, and at the same time avoids possible contamination and scratches caused by the products falling during ejection.

[0059] In summary, the present invention, as described in the specification and illustrations, has been manufactured into actual samples and tested multiple times. The test results demonstrate that the present invention can achieve its intended purpose and its practicality is unquestionable. The above embodiments are merely intended to facilitate the description of the present invention and are not intended to be formally limiting. Any equivalent embodiments that are partially modified or modified by a person skilled in the art, without departing from the scope of the present invention and similar features, utilizing the technical features disclosed in the present invention, fall within the scope of protection of the present invention.

Claims

1. A high-speed robot for preforms with a cooling function, comprising a preform jig (2) arranged on a frame (1), wherein the preform jig (2) is provided with a plurality of preform removal cylinders (2a), and is characterized in that: The frame (1) is provided with a moving mechanism (3) and a rotating mechanism (4), the rotating mechanism (4) is connected to the preform jig (2) and drives it to rotate, the rotating mechanism (4) is arranged on the moving mechanism (3), and the moving mechanism (3) drives the rotating mechanism (4) and the preform jig (2) to move back and forth; the preform jig (2) is provided with a cooling main pipeline and a plurality of cooling branch pipelines that are interconnected, and the cooling branch pipelines pass through the interior of the preform removal cylinder (2a) in a one-to-one correspondence.

2. The high-speed robot for preforms with cooling function according to claim 1 is characterized in that: The cooling main pipeline comprises a cooling liquid inlet (2b) and a cooling liquid outlet (2c), which are respectively arranged at the head end of the preform jig (2).

3. The high-speed robot for preforms with cooling function according to claim 1 or 2, characterized in that: The preform jig (2) is provided with a gas main pipeline and a plurality of gas branch pipelines that are interconnected, and the gas branch pipelines are connected to the tail of the preform removal cylinder (2a) in a one-to-one correspondence.

4. The high-speed robot for preforms with cooling function according to claim 3 is characterized in that: The gas main pipeline is provided with a gas inlet and outlet (2d) located at the head end of the preform jig (2).

5. The high-speed robot for preforms with cooling function according to claim 1 is characterized in that: A cooling system is also included, and the cooling main pipeline is connected to the cooling system.

6. The high-speed robot for preforms with cooling function according to claim 1 is characterized in that: It also includes a dehumidification system. A dehumidification air duct (5) is provided on the top of the rack (1), and the dehumidification air duct (5) is connected to the dehumidification system.

7. The high-speed robot for preforms with cooling function according to claim 3 is characterized in that: A vacuum pump (6) and a vacuum tank (7) connected to each other are provided at the lower portion of the frame (1), and a pipeline of the vacuum tank (7) is connected to the main gas pipeline.

8. The high-speed robot arm for preforms with cooling function according to claim 3 is characterized in that: A positive pressure gas tank (8) is provided at the lower portion of the frame (1), and a pipeline of the positive pressure gas tank (8) is connected to the main gas pipeline.

9. The high-speed robot for preforms with cooling function according to claim 1, characterized in that: The moving mechanism (3) includes a first servo motor (3a), a reducer (3b), an active synchronous wheel (3c), a synchronous belt (3d) and a driven synchronous wheel (3e) connected in sequence, and also includes a toothed plate (3f), a movable plate and a linear guide rail (3h). The synchronous belt (3d) is connected to the movable plate through the toothed plate (3f), and the linear guide rail (3h) is connected to the movable plate and guides and constrains its back-and-forth movement.

10. The high-speed robot for preforms with cooling function according to claim 9, characterized in that: The rotating mechanism (4) comprises a second servo motor (4a), a transmission shaft (4b), and a transition plate (4c) connected in sequence, and the preform jig (2) is connected to the transmission shaft (4b) via the transition plate (4c).

11. The high-speed robot for preforms with cooling function according to claim 9, characterized in that: The moving mechanism (3) further comprises a support plate seat (3i) and a plurality of columns (3j), the linear guide rail (3h) is arranged on the support plate seat (3i), and the support plate seat (3i) is arranged on the frame (1) through the columns (3j).

12. The high-speed robot arm for preforms with cooling function according to claim 1, characterized in that: It also includes a conveyor belt (9), which carries and conveys the cooled bottle preforms in the bottle preform jig (2).

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