A plastic bottle defective product screening device

Abstract

The application relates to the technical field of plastic bottle manufacturing, in particular to a plastic bottle defective product screening device. The plastic bottle defective product screening device comprises a clamp used for clamping a plastic bottle after blow molding; a driving component, wherein the clamp is installed at the output end of the driving component, and the driving component is used for driving the clamp to move towards the plastic bottle; a linear guide rail, wherein the linear guide rail is installed on the driving component; a nozzle, wherein the nozzle is installed on the linear guide rail, the linear guide rail is used for driving the nozzle to move towards or away from the clamp, and the nozzle can be inserted into the mouth of the plastic bottle; and an air pressure monitor, wherein the air pressure monitor is installed on the nozzle and used for monitoring the air pressure in the plastic bottle. The application can screen the broken plastic bottles and ensure the product yield.

Description

Technical Field

[0001] This application relates to the field of plastic bottle manufacturing technology, and in particular to a plastic bottle defective product screening device. Background Technology

[0002] With the rapid development of the plastic packaging industry, plastic bottles, as common packaging containers, are widely used in beverages, daily chemicals, pharmaceuticals, and other fields. The production process of plastic bottles requires first producing preforms, which are then blow-molded using a blow molding machine to form the final plastic bottle.

[0003] During the blow molding process, plastic bottles may break. If they are not removed in time, the final product yield will be too low, affecting subsequent production. Utility Model Content

[0004] The purpose of this application is to provide a plastic bottle defect screening device that can screen broken plastic bottles to ensure product yield.

[0005] The defective plastic bottle screening device provided in this application adopts the following technical solution: A defective plastic bottle sorting device includes: Clamps are used to hold blow-molded plastic bottles. A driving component, wherein the clamp is mounted on the output end of the driving component, and the driving component is used to drive the clamp to move toward the plastic bottle; A linear guide rail, which is mounted on the drive component; A nozzle is mounted on a linear guide rail, which is used to move the nozzle toward or away from the clamp, and the nozzle can be inserted into the mouth of a plastic bottle. A pressure monitor, installed on the nozzle, is used to monitor the pressure inside the plastic bottle.

[0006] Optionally, a sealing ring is also included, which is installed on the nozzle and abuts against the opening of the plastic bottle when the nozzle is inserted into the plastic bottle.

[0007] Optionally, the nozzle is conical and downward-facing, and the sealing ring is detachably mounted on the nozzle.

[0008] Optionally, the nozzle is conical and downward-facing, and the sealing ring is detachably mounted on the nozzle.

[0009] Optionally, it also includes a fixing bolt, wherein the nozzle sidewall has a threaded blind hole, and the fixing bolt can pass through the sealing ring and be threadedly engaged with the threaded blind hole.

[0010] Optionally, a plurality of threaded blind holes are provided along the axis of the nozzle.

[0011] Optionally, the sealing ring is made of rubber.

[0012] This application uses a nozzle inserted into a plastic bottle to ventilate the bottle, and combined with a pressure monitor, it enables the inspection of blow-molded plastic bottles, allowing broken bottles to be picked out to ensure a high yield rate.

[0013] Furthermore, by setting up a sealing ring that works in conjunction with a linear guide rail, the sealing ring is kept in a compressed state under the action of the linear guide rail, ensuring the sealing performance at the connection between the nozzle and the plastic bottle opening, and further ensuring the accuracy of plastic bottle detection.

[0014] Furthermore, this application also incorporates several threaded blind holes to allow for the replacement of different sealing rings and the installation of sealing rings of different specifications at different positions on the nozzle, ensuring a stable sealing effect on plastic bottles of different specifications and increasing applicability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a plastic bottle defective product screening device according to an embodiment of this application.

[0016] Figure 2 This is a schematic diagram of the nozzle structure in an embodiment of this application.

[0017] Figure 3 This is a cross-sectional view of the nozzle in an embodiment of this application.

[0018] In the diagram, 1 is the drive component; 2 is the clamp; 3 is the linear guide rail; 4 is the nozzle; 41 is the threaded blind hole; 5 is the sealing ring; and 6 is the fixing bolt. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 This application will be described in further detail below.

[0020] A defective plastic bottle screening device, referring to Figure 1 It includes a drive component 1 and a clamp 2. The clamp 2 is installed at the output end of the drive component 1 and is used to drive the clamp 2 to move towards the plastic bottle.

[0021] In some embodiments, the driving component 1 can be a vertical driving guide rail, that is, when the plastic bottle is transported vertically, the driving component 1 can drive the clamp 2 to move down, so that the clamp 2 can clamp the plastic bottle, so as to facilitate the monitoring of the plastic bottle.

[0022] In some embodiments, the driving component 1 can be a three-dimensional moving platform or a robotic arm. The driving component 1 can drive the clamp 2 to clamp the plastic bottle located in the mold and unload the plastic bottle. During the unloading process, the plastic bottle is checked for damage, thereby saving inspection time and increasing efficiency.

[0023] In some embodiments, the system further includes a linear guide rail 3 and a nozzle 4. The linear guide rail 3 is mounted on the drive component 1, meaning that when the drive component 1 moves the gripper, the linear guide rail 3 moves along with the gripper. This ensures that during the unloading process of the plastic bottle by the gripper (i.e., after the plastic bottle is removed from the mold and placed on the conveyor belt), the plastic bottle can be inspected to determine whether it is damaged. Since the inspection process and the unloading process partially overlap, the overall process can be streamlined, increasing efficiency.

[0024] The nozzle 4 is fixedly installed at the output end of the linear guide rail 3. The linear guide rail 3 is used to drive the nozzle 4 to move closer to or further away from the clamp 2. When the clamp 2 clamps the plastic bottle, the linear guide rail 3 drives the nozzle 4 to move down, so that the nozzle 4 is inserted into the plastic bottle and the nozzle 4 is adapted to the mouth of the plastic bottle to avoid air leakage. At this time, air is sprayed into the plastic bottle through the nozzle 4 to detect whether the plastic bottle is broken.

[0025] Specifically, a pressure monitor (not shown in the figure) is installed on the nozzle 4. The pressure monitor is used to monitor the pressure inside the plastic bottle. That is, when the nozzle 4 sprays high-pressure gas into the plastic bottle, if the plastic bottle leaks, the pressure drops. At this time, the pressure monitor will sound an alarm. The damaged plastic bottle can be moved to the designated position (waste collection position) by controlling the drive component 1. If the pressure does not change significantly, the plastic bottle is not damaged. At this time, the plastic bottle is moved to the designated position (discharge position).

[0026] Reference Figure 2 and Figure 3 In some embodiments, a sealing ring 5 is also included. The sealing ring 5 is installed on the nozzle 4, and when the nozzle 4 is inserted into the plastic bottle, the sealing ring 5 abuts against the bottle opening. Specifically, the sealing ring 5 is arranged around the nozzle 4. When the plastic bottle needs to be inspected, the linear guide 3 moves the nozzle 4 downward, so that the nozzle 4 is inserted into the plastic bottle until the sealing ring 5 abuts against the bottle opening. At this time, due to the movement of the linear guide 3, the sealing ring 5 undergoes elastic deformation, thereby completely sealing the contact point between the nozzle 4 and the bottle opening, further ensuring the seal between the nozzle 4 and the plastic bottle, and ensuring the accuracy of the plastic bottle inspection.

[0027] In some embodiments, the nozzle 4 is configured as a cone and facing downwards. When encountering plastic bottles of different sizes, the depth of insertion of the nozzle 4 can ensure that the outer peripheral wall of the nozzle 4 is tightly pressed against the mouth of the plastic bottle, ensuring the first seal at the connection between the plastic bottle and the nozzle 4. This increases the applicability of the nozzle 4 while ensuring a good sealing effect on plastic bottles of different sizes.

[0028] In some embodiments, the sealing ring 5 is detachably connected to the nozzle 4. When testing plastic bottles of different diameters, the position of the sealing ring 5 needs to be changed because the insertion depth of the nozzle 4 is different. By setting the sealing ring 5 to be detachably connected, when testing plastic bottles of different diameters, the position of the sealing ring 5 can be adjusted to a suitable position first, so as to ensure that when the nozzle 4 is inserted into the plastic bottle, the sealing ring 5 is pressed against the plastic bottle mouth for secondary sealing, thus ensuring the sealing between the nozzle 4 and the plastic bottle mouth.

[0029] In some embodiments, a fixing bolt 6 is also included. The sealing ring 5 is fixed to the nozzle 4 by the fixing bolt 6, which facilitates the disassembly and installation of the sealing ring 5 and makes replacement convenient. Specifically, a threaded blind hole 41 is provided on the side wall of the nozzle 4. The fixing bolt 6 can pass through the sealing ring 5 and is threadedly engaged with the threaded blind hole 41 to fix the sealing ring 5.

[0030] In some embodiments, two fixing bolts 6 are symmetrically arranged, and the two fixing bolts 6 simultaneously fix the sealing ring 5 to ensure the stability of the sealing ring 5 and reduce the possibility of the sealing ring 5 tilting and slipping.

[0031] In some embodiments, a groove may be formed on the side wall of the nozzle 4, and the sealing ring 5 may be partially embedded in the groove. The groove limits the movement of the sealing ring 5 along the axial direction of the nozzle 4.

[0032] In some embodiments, in order for the sealing ring 5 to be smoothly embedded in the groove and to fit tightly against the inner wall of the groove, the sealing ring 5 is made of rubber. In other embodiments, the sealing ring 5 may be made of other materials that can undergo elastic deformation.

[0033] In some embodiments, a plurality of threaded blind holes 41 are provided along the axis of the nozzle 4. Each threaded blind hole 41 corresponds to a plastic bottle opening diameter. That is, when a plastic bottle of a different specification is replaced, the sealing ring 5 needs to be removed and replaced with a new sealing ring 5. The sealing ring 5 is then installed at the corresponding threaded blind hole 41 position to adapt to the insertion depth of the nozzle 4 and the size of the plastic bottle opening, thereby ensuring the sealing of the connection between the plastic bottle and the nozzle 4.

[0034] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for screening defective plastic bottles, characterized in that, include: Clamp (2) is used to clamp the blow-molded plastic bottle; A driving component (1) is provided, and the clamp (2) is installed at the output end of the driving component (1). The driving component (1) is used to drive the clamp (2) to move towards the plastic bottle. Linear guide (3), the linear guide (3) is mounted on the drive component (1); The nozzle (4) is mounted on the linear guide (3), which is used to drive the nozzle (4) to move toward or away from the clamp (2). The nozzle (4) can be inserted into the mouth of a plastic bottle. A pressure monitor is installed on the nozzle (4) to monitor the pressure inside the plastic bottle.

2. The plastic bottle defective product screening device according to claim 1, characterized in that, It also includes a sealing ring (5), which is installed on the nozzle (4). When the nozzle (4) is inserted into the plastic bottle, the sealing ring (5) is pressed against the opening of the plastic bottle.

3. The plastic bottle defective product screening device according to claim 2, characterized in that, The nozzle (4) is conical and downward-facing, and the sealing ring (5) is detachably installed on the nozzle (4).

4. The plastic bottle defective product screening device according to claim 3, characterized in that, It also includes a fixing bolt (6), and the nozzle (4) has a threaded blind hole (41) on its side wall. The fixing bolt (6) can pass through the sealing ring (5) and is threadedly engaged with the threaded blind hole (41).

5. The plastic bottle defective product screening device according to claim 4, characterized in that, Several threaded blind holes (41) are provided along the axis of the nozzle (4).

6. The plastic bottle defective product screening device according to claim 2, characterized in that, The sealing ring (5) is made of rubber.

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