An automatic ring pressing device

Abstract

An automatic ring pressing device provided by the present invention includes a workbench. Above the workbench, there is a bottle conveyor belt for conveying plastic bottles. On the front side of the bottle conveyor belt, there is a ring conveying mechanism for conveying ring handles. The ring conveying mechanism includes a ring handle conveyor belt and a number of identically structured ring pressing guiding jigs placed on the ring handle conveyor belt. The ring pressing guiding jigs are used for placing ring handles. The ring handle conveyor belt is arranged parallel to the bottle conveyor belt. Above the bottle conveyor belt, there is a ring pressing mechanism for pressing the ring handle onto the bottle. On the left side of the ring handle conveyor belt, there is a loading manipulator for moving the ring pressing guiding jig onto the plastic bottle. On the right side of the ring handle conveyor belt, there is an unloading manipulator for moving the ring pressing guiding jig on the plastic bottle to the ring handle conveyor belt. For the automatic ring pressing device provided in this application, the plastic bottle is automatically loaded. The ring pressing guiding jig is used to position and automatically load the ring handle onto the bottle, and the efficiency of pressing the ring handle is high.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic production equipment, and specifically to an automatic ring pressing device. Background Art

[0002] At present, the medium packaging of 5L - 10L plastic bottles in China is very common in the liquid filling fields such as food and chemical industry. In order to make the plastic bottles easy to carry, it is often necessary to add a lifting ring at the barrel mouth of the bottle body. At present, for pressing the lifting ring, many use manual feeding of the bottle body and then pressing the lifting ring. The speed of manual feeding and pressing the lifting ring is relatively slow and the labor intensity is large, which is not suitable for large - batch and high - speed production. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatic ring pressing device to solve the technical problems in the background art.

[0004] To achieve the above - mentioned purpose, the present invention provides the following technical solutions:

[0005] An automatic ring pressing device includes a workbench. Above the workbench, there is a bottle body conveyor belt for conveying plastic bottles. In front of the bottle body conveyor belt, there is a lifting ring conveying mechanism for conveying lifting rings. The lifting ring conveying mechanism includes a lifting ring conveyor belt and a number of identically - structured ring pressing guiding jigs placed on the lifting ring conveyor belt. The ring pressing guiding jigs are used for placing the lifting rings. The lifting ring conveyor belt is arranged parallel to the bottle body conveyor belt. Above the bottle body conveyor belt, there is a ring pressing mechanism for pressing the lifting ring onto the bottle body. On the left side of the lifting ring conveyor belt, there is a loading manipulator for moving the ring pressing guiding jig to the plastic bottle body. On the right side of the lifting ring conveyor belt, there is an unloading manipulator for moving the ring pressing guiding jig on the plastic bottle body to the lifting ring conveyor belt.

[0006] The ring pressing mechanism includes a ring pressing driving cylinder and a number of identically - structured ring pressing heads. Above the workbench, there is an installation bracket. The ring pressing driving cylinder is fixed inside the installation bracket. The ring pressing driving cylinder is above the workbench. The ring pressing driving cylinder drives the ring pressing heads to move up and down. The ring pressing heads are above the bottle body conveyor belt.

[0007] The pressing ring head includes a pressing ring plate, a limiting plate, a plurality of pressing rods and compression springs. The pressing ring plate and the limiting plate are both disc structures. The limiting plate is located below the pressing ring plate and is fixedly connected to the pressing ring plate coaxially. The diameter of the limiting plate is smaller than that of the pressing ring plate. The plurality of pressing rods are arranged equidistantly along the circumference of the axis of the pressing ring plate. The pressing rods are arranged vertically. The top of the pressing rod is hinged to the pressing ring plate. The compression springs are wound around the outside of all the pressing rods on the pressing ring plate for at least one turn. The upper part of the pressing rod abuts against the side of the limiting plate under the action of the compression spring. The limiting plate is provided with a limiting groove with a concave structure to abut against the pressing rod. The bottom of the pressing rod abuts against the lifting ring.

[0008] The pressing rod includes a fixed block and a support rod. The fixed block is fixedly connected to the pressing ring plate. An installation groove is provided below the fixed block. The support rod is located in the installation groove and is rotatably connected to the fixed block. A rotating shaft is installed above the support rod and is rotatably connected to the fixed block. The support rod swings back and forth along the rotating shaft. A placement part for placing the compression spring is provided below the support rod. A cushion block made of an elastic material is installed at the bottom of the support rod.

[0009] The placement part includes a first stop block and a second stop block. The first stop block and the second stop block are arranged at an interval up and down and are fixed on the support rod. The distance between the first stop block and the second stop block forms a placement groove for placing the compression spring.

[0010] The pressing ring driving cylinder is fixedly connected to the installation bracket through a first support plate. There are four pressing ring heads. The four pressing ring heads are arranged side by side and are connected by a first driving plate. The pressing ring driving cylinder is drivingly connected to the first driving plate. The first driving plate is below the first support plate. The pressing ring heads are all fixed below the first driving plate. At least one guide rod is provided on each pressing ring head. The top of the guide rod is fixedly connected to the first support plate. The bottom of the guide rod passes through the first driving plate and the pressing ring plate.

[0011] The loading manipulator and the unloading manipulator have the same structure. The loading manipulator includes a Y-axis driving member, a Z-axis loading cylinder and a loading rack. The Y-axis driving member is fixedly connected to the workbench through a loading support frame. The Y-axis driving member is drivingly connected to the Z-axis loading cylinder. The loading rack is below the Z-axis loading cylinder and is drivingly connected to the Z-axis loading cylinder. The loading rack includes a loading plate and a plurality of vacuum suction nozzles installed under the loading plate.

[0012] The lifting ring conveyor belt includes a base belt, a first motor, a driving shaft and a driven shaft. The first motor is drivingly connected to the driving shaft. The base belt moves repeatedly between the driving shaft and the driven shaft. Limiting columns are equidistantly arranged along the front and back sides of the base belt respectively. The limiting columns are vertically fixed on the base belt. The pressing ring guiding jig is placed on the base belt, and the limiting columns are inserted into the pressing ring guiding jig.

[0013] The pressing ring guiding jig includes a positioning cylinder and a supporting backing plate fixed above the positioning cylinder. The positioning cylinder is provided with an inner cavity with an open bottom structure. The positioning cylinder is made of metal material, and the supporting backing plate is made of plastic. The supporting backing plate is of a disc structure. The supporting backing plate and the positioning cylinder are fixedly connected by screws. The positioning cylinder includes an upper supporting part and a lower supporting part. The upper supporting part is of a frustum structure, and the lower supporting part is of a cylindrical structure. The outer diameter of the lower supporting part is greater than or equal to the outer diameter of the bottom end surface of the upper supporting part. The diameter of the supporting backing plate is less than or equal to the diameter of the top end surface of the upper supporting part. The inner hole diameter of the lower supporting part is matched with the outer diameter of the bottle mouth of the bottle body. The bottle mouth of the bottle body is inserted into the lower supporting part. A protruding annular retaining strip is arranged in the inner cavity of the positioning cylinder. The annular retaining strip is arranged along the top of the lower supporting part, and the annular retaining strip is coaxially arranged with the lower supporting part.

[0014] A number of sets of clamping and positioning members with the same structure are arranged on the bottle body conveyor belt. The clamping and positioning members include a first clamping member and a second clamping member. The first clamping member and the second clamping member have the same structure and are symmetrically installed on the front and back sides of the bottle body conveyor belt. The first clamping member includes a clamping driving cylinder and a clamping seat. The clamping driving cylinder is fixed on one side of the bottle body conveyor belt. The clamping driving cylinder is drivingly connected to the clamping seat. The clamping driving cylinder drives the clamping seat to move back and forth. The clamping seat includes a number of sets of clamping frames with the same structure. A number of sets of the clamping frames are connected and fixed by a linkage plate. The linkage plate is drivingly connected to the clamping driving cylinder. The clamping frames are fixed on the linkage plate. The clamping frame includes an upper clamping block, a lower clamping block and a spacer. The upper clamping block and the lower clamping block are symmetrically installed on the upper and lower sides of the spacer. The upper clamping block and the lower clamping block have the same structure. An inwardly concave clamping groove is arranged on the upper clamping block. The clamping groove matches the outer shape of the bottle body.

[0015] Compared with the prior art, an automatic pressing ring device provided by the present application realizes automatic feeding of plastic bottles, then uses the clamping and positioning members to position and clamp the plastic bottles on the bottle body conveyor belt, uses the pressing ring guiding jig to position and automatically feed the lifting ring onto the bottle body, and then realizes automatic pressing ring operation on the lifting ring and the bottle body through the pressing ring head, improves the efficiency of the pressing and lifting ring operation on the bottle body, ensures the stability of the pressing ring operation, reduces the labor cost, can realize the rapid and accurate pressing of the lifting ring onto the bottle body, has high pressing and lifting ring efficiency, and can meet the requirements of high-speed production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 : Schematic diagram of the three-dimensional structure of the present application;

[0017] Figure 2 : Schematic diagram of the structure of the bottle body conveyor belt;

[0018] Figure 3 : Schematic diagram of the structure of the clamping and positioning member;

[0019] Figure 4 : Schematic diagram of the structure of the loading manipulator;

[0020] Figure 5 : Schematic diagram of the structure of the ring lifting conveyor mechanism;

[0021] Figure 6 : Figure 5 Enlarged view of part A of

[0022] Figure 7 : Three-dimensional structure diagram of the press ring guiding jig;

[0023] Figure 8 : Schematic diagram of the internal structure of the press ring guiding jig;

[0024] Figure 9 : Schematic diagram of the structure of the press ring mechanism;

[0025] Figure 10 : Schematic diagram of the structure of the press ring head;

[0026] Figure 11 : Schematic diagram of the structure of the pressure rod;

[0027] Figure 12 : Schematic diagram of the structure of the limit plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0029] Specific Embodiment 1: Please refer to Figures 1 to 3, in the embodiment of the present application, an automatic ring pressing device includes a workbench 1. Above the workbench 1, there is a bottle conveyor belt 2 for conveying plastic bottles. On the front side of the bottle conveyor belt 2, there is a ring conveyor mechanism 3 for conveying lifting rings. On the bottle conveyor belt 2, there are several groups of clamping and positioning members 6 with the same structure. In this embodiment, there are three groups of clamping and positioning members 6 with the same structure on the bottle conveyor belt 2. The clamping and positioning member 6 includes a first clamping member 601 and a second clamping member 602. The first clamping member 601 and the second clamping member 602 have the same structure and are symmetrically installed on the front and rear sides of the bottle conveyor belt 2. The first clamping member 601 includes a clamping driving cylinder 601-1 and a clamping seat. The clamping driving cylinder 601-1 is fixed on one side of the bottle conveyor belt 2. The clamping driving cylinder 601-1 is drivingly connected to the clamping seat. The clamping driving cylinder 601-1 drives the clamping seat to move back and forth. The clamping seat includes several groups of clamping brackets 601-3 with the same structure. In this embodiment, four groups of clamping brackets 601-3 are used. The four groups of clamping brackets 601-3 are connected and fixed side by side through a linkage plate 601-2. The linkage plate 601-2 is drivingly connected to the clamping driving cylinder 601-1. The clamping brackets 601-3 are fixed on the linkage plate 601-2. The clamping bracket 601-3 includes an upper clamping block 603-1-1, a lower clamping block 603-1-2, and a spacer 603-1-3. The upper clamping block 603-1-1 and the lower clamping block 603-1-2 are symmetrically installed on the upper and lower sides of the spacer 603-1-3. The upper clamping block 603-1-1 and the lower clamping block 603-1-2 have the same structure. An inwardly concave clamping groove 601-3-1-1 is provided on the upper clamping block 603-1-1. The clamping groove 601-3-1-1 matches the outer shape of the bottle. The four bottles on the bottle conveyor belt 2 are clamped and positioned by the first clamping member 601 and the second clamping member 602 at the same time.

[0030] Please refer to Figures 5 to 8 , the ring conveyor mechanism 3 includes a ring conveyor belt 4 and several ring pressing guide jigs 5 with the same structure placed on the ring conveyor belt 4. The ring pressing guide jigs 5 are used for placing lifting rings. The lifting rings are placed on the ring pressing guide jigs 5 individually by manual or robotic means. The ring conveyor belt 4 is arranged in parallel with the bottle conveyor belt 2. Above the bottle conveyor belt 2, there is a ring pressing mechanism 10 for pressing the lifting ring onto the bottle. On the left side of the ring conveyor belt 4, there is a loading robot 7 for moving the ring pressing guide jig 5 onto the plastic bottle. On the right side of the ring conveyor belt 4, there is an unloading robot 8 for moving the ring pressing guide jig 5 on the plastic bottle to the ring conveyor belt 4.

[0031] The lifting ring conveyor belt 4 includes a base belt 404, a first motor 401, a driving shaft 402 and a driven shaft 403. The first motor 401 is drivingly connected to the driving shaft 402. The base belt 404 moves repeatedly between the driving shaft 402 and the driven shaft 403. Limit posts 405 are equidistantly arranged along the front and rear sides of the base belt 404 respectively. The limit posts 405 are vertically fixed on the base belt 404. The pressing ring guiding jig 5 is placed on the base belt 404. The limit posts 405 are inserted into the pressing ring guiding jig 5. In this embodiment, four limit posts 405 are inserted into a single pressing ring guiding jig 5. By setting the limit posts 405, it can prevent the pressing ring guiding jigs 5 from colliding with each other or other defects when moving on the lifting ring conveyor belt 4, and position and place the pressing ring guiding jigs 5, which is convenient for the loading manipulator 7 and the unloading manipulator 8 to orientedly pick up the pressing ring guiding jigs 5.

[0032] The pressing ring guiding jig 5 includes a positioning cylinder 502 and a supporting backing plate 501 fixed above the positioning cylinder 502. An inner cavity 501-3 with an opening at the bottom is provided in the positioning cylinder 502. The positioning cylinder 502 is made of a metal material. In this embodiment, the positioning cylinder 502 is made of stainless steel material, and the supporting backing plate 501 is made of plastic. In this embodiment, the supporting backing plate 501 is made of bakelite. The supporting backing plate 501 is of a disc structure. The supporting backing plate 501 and the positioning cylinder 502 are fixedly connected by screws. The positioning cylinder 502 includes an upper supporting part 501-1 and a lower supporting part 501-2. The upper supporting part 501-1 is of a frustum structure, and the lower supporting part 501-2 is of a cylindrical structure. The outer diameter of the lower supporting part 501-2 is greater than or equal to the outer diameter of the bottom end face of the upper supporting part 501-1. In this embodiment, the outer diameter of the lower supporting part 501-2 is equal to the outer diameter of the bottom end face of the upper supporting part 501-1. The diameter of the supporting backing plate 501 is less than or equal to the diameter of the top end face of the upper supporting part 501-1. The inner hole diameter of the lower supporting part 501-2 is matched with the outer diameter of the bottle mouth of the bottle body. The bottle mouth of the bottle body is inserted into the lower supporting part 501-2. The lifting ring is supported at the connection of the upper supporting part 501-1 and the lower supporting part 501-2. The lifting ring is sleeved from the position of the supporting backing plate 501 to the positioning cylinder 502 for positioning and placement. A raised annular rib 501-4 is provided in the inner cavity 501-3 of the positioning cylinder 502. The annular rib 501-4 is arranged along the top of the lower supporting part 501-2. The annular rib 501-4 is coaxially arranged with the lower supporting part 501-2. The provided annular rib 501-4 can play a limiting role when the positioning cylinder 501 is sleeved on the bottle mouth of the bottle body, and the annular rib 501-4 abuts against the top end face of the bottle mouth.

[0033] Please refer to Figure 4, the loading manipulator 7 and the unloading manipulator 8 have the same structure. The loading manipulator 7 includes a Y-axis driving member 701, a Z-axis loading cylinder 702 and a loading rack 703. The Y-axis driving member 701 is fixedly connected to the workbench 1 through a loading support frame. The Y-axis driving member 701 is drivingly connected to the Z-axis loading cylinder 702. The loading rack 703 is below the Z-axis loading cylinder 702 and is drivingly connected to the Z-axis loading cylinder 702. The loading rack 703 includes a loading plate 703-1 and a plurality of vacuum suction nozzles 703-2 installed under the loading plate 703-1. The loading manipulator 7 adsorbs the pressing ring guiding fixture 5 on the lifting ring conveyor belt 4 to the bottle on the bottle conveyor belt 2. After the pressing ring operation is completed, the empty pressing ring guiding fixture 5 is adsorbed by the unloading manipulator 8 and returned to the lifting ring conveyor belt 4 for lifting ring loading.

[0034] Please refer to Figures 9 to 12 , the pressing ring mechanism 10 includes a pressing ring driving cylinder 11 and a plurality of pressing ring heads 12 with the same structure. An installation bracket 9 is provided on the workbench 1. The pressing ring driving cylinder 11 is fixed in the installation bracket 9. The pressing ring driving cylinder 11 is above the workbench 1. The pressing ring driving cylinder 11 drives the pressing ring head 12 to move up and down. The pressing ring head 12 is above the bottle conveyor belt 2.

[0035] The pressing ring head 12 includes a pressing ring plate 1201, a limiting plate 1202, a plurality of pressing rods 1203 and a compression spring 1204. Both the pressing ring plate 1201 and the limiting plate 1202 are disc structures. The limiting plate 1202 is below the pressing ring plate 1201 and is fixedly connected coaxially with the pressing ring plate 1201. The diameter of the limiting plate 1202 is smaller than the diameter of the pressing ring plate 1201. A plurality of pressing rods 1203 are arranged equidistantly along the axis of the pressing ring plate 1201 in a circle. The pressing rods 1203 are arranged in the vertical direction. The top of the pressing rod 1203 is hinged to the pressing ring plate 1201. The compression spring 1204 winds around the outside of all the pressing rods 1203 on the pressing ring plate 1201 for at least one circle. Since the compression spring 1204 winds around the outside of all the pressing rods 1203, there is a contracting force on the periphery of all the pressing rods 1203, which contracts the pressing rods 1203 towards the limiting plate 1202. That is, the pressing rods 1203 are in contact with the side of the limiting plate 1202 under the action of the compression spring 1204. The limiting plate 1202 is provided with a limiting groove with an inward concave structure in contact with the pressing rod 1203. The bottom of the pressing rod 1203 is in contact with the lifting ring.

[0036] The compression bar 1203 includes a fixed block 1203-1 and a support bar 1203-2. The fixed block 1203-1 is fixedly connected to the compression ring plate 1201. An installation groove 1203-1-1 is provided below the fixed block 1203-1. The support bar 1203-2 is located in the installation groove 1203-1-1 and is rotatably connected to the fixed block 1203-1. A rotating shaft 1203-3 is installed above the support bar 1203-2 and is rotatably connected to the fixed block 1203-1. The support bar 1203-2 swings back and forth along the rotating shaft. A placement part 1203-4 for placing the compression spring 1204 is provided below the support bar 1203-2. A cushion block 1203-5 made of elastic material is installed at the bottom of the support bar 1203-2.

[0037] The placement part 1203-4 includes a first stop block 1203-4-1 and a second stop block 1203-4-2. The first stop block 1203-4-1 and the second stop block 1203-4-2 are arranged at an interval up and down and are fixed on the support bar 1203-2. The distance between the first stop block 1203-4-1 and the second stop block 1203-4-2 forms a placement groove for placing the compression spring 1204. The compression spring 1204 wound around the compression bar 1203 is placed in a limited way through the placement part 1203-4. In addition to the structure of this embodiment, a concave placement groove can also be directly processed on the compression bar 1203 for placing the compression spring 1204 in a limited way.

[0038] The compression ring driving cylinder 11 is fixedly connected to the installation bracket 9 through the first support plate 13. There are four compression ring heads 12. The four compression ring heads 12 are arranged side by side and are connected by the first driving plate 14. The compression ring driving cylinder 11 is drivingly connected to the first driving plate 14. The first driving is below the first support plate 13. The compression ring heads 12 are all fixed below the first driving plate 14. At least one guide rod 15 is provided on each compression ring head 12. In this embodiment, two guide rods 15 are adopted. The top end of the guide rod 15 is fixedly connected to the first support plate 13. The bottom of the guide rod 15 passes through the first driving plate 14 and the compression ring plate 1201. By providing the guide rod 15, the up and down movement of the compression ring head 12 is made more stable.

[0039] Workflow: Manually or using a robotic arm, thread the lifting rings individually through the support backing plate 501 onto the positioning cylinder 502. After the feeding robotic arm 7 adsorbs the entire pressing ring guiding fixture 5 with the lifting rings sleeved thereon, place it correspondingly on the plastic bottle body on the bottle conveyor belt 2. Insert the positioning cylinder 502 into the bottle mouth position of the bottle body. As the bottle conveyor belt 2 moves, transfer the bottle body with the pressing ring guiding fixture 5 to below the pressing ring head 12. The pressing ring driving cylinder 11 drives the pressing ring head 12 to move downward to above the corresponding pressing ring guiding fixture 5. As the pressing rod 1203 continues to press down, the pressing rod 1203 abuts against the lifting ring along the outer shape of the positioning cylinder 502, pressing the lifting ring onto the bottle body to complete the pressing ring operation for the lifting ring. After the pressing ring operation is completed, the bottle body is transferred to the right side of the bottle conveyor belt 2. The empty pressing ring guiding fixture 5 is adsorbed by the discharging robotic arm 8 and placed on the lifting ring conveyor belt 4, and is transferred by the lifting ring conveyor belt 4 in the direction of the feeding robotic arm 7 for feeding of the lifting rings. Repeat the pressing ring operation in this way.

[0040] Compared with the prior art, an automatic pressing ring device provided by the present application realizes automatic feeding of plastic bottles, then uses the clamping and positioning member to position and clamp the plastic bottles on the bottle conveyor belt, uses the pressing ring guiding fixture to realize positioning and automatic feeding of the lifting rings onto the bottle body, and then realizes automatic pressing ring operation on the lifting rings and the bottle body through the pressing ring head, improving the efficiency of the pressing and lifting ring operation on the bottle body, ensuring the stability of the pressing ring operation, reducing the manual operation cost, being able to realize rapid and accurate pressing of the lifting rings onto the bottle body, having a high pressing and lifting ring efficiency, and being able to meet the requirements of high-speed production.

[0041] For those skilled in the art, it is obvious that the present invention is not limited to the details of the foregoing exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the foregoing description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0042] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic ring pressing device, characterized in that: It includes a workbench. Above the workbench, there is a bottle conveyor belt for conveying plastic bottles. In front of the bottle conveyor belt, there is a ring conveying mechanism for conveying lifting rings. The ring conveying mechanism includes a ring conveyor belt and a number of ring pressing guide jigs with the same structure placed on the ring conveyor belt. The ring pressing guide jigs are used to place the lifting rings. The ring conveyor belt is arranged parallel to the bottle conveyor belt. Above the bottle conveyor belt, there is a ring pressing mechanism for pressing the lifting ring onto the bottle. On the left side of the ring conveyor belt, there is a loading manipulator for moving the ring pressing guide jig onto the plastic bottle body. On the right side of the ring conveyor belt, there is an unloading manipulator for moving the ring pressing guide jig on the plastic bottle body to the ring conveyor belt; The ring pressing mechanism includes a ring pressing driving cylinder and a number of ring pressing heads with the same structure. Above the workbench, there is an installation bracket. The ring pressing driving cylinder is fixed inside the installation bracket. The ring pressing driving cylinder is above the workbench. The ring pressing driving cylinder drives the ring pressing head to move up and down. The ring pressing head is above the bottle conveyor belt; The ring pressing head includes a ring pressing plate, a limiting plate, a number of pressing rods and a compression spring. Both the ring pressing plate and the limiting plate are disc structures. The limiting plate is below the ring pressing plate and is coaxially and fixedly connected to the ring pressing plate. The diameter of the limiting plate is smaller than that of the ring pressing plate. The number of pressing rods is arranged equidistantly along the circumference of the axis of the ring pressing plate. The pressing rods are arranged vertically. The top of the pressing rod is hinged to the ring pressing plate. The compression spring winds around the outside of all the pressing rods on the ring pressing plate for at least one turn. The upper part of the pressing rod is in contact with the side of the limiting plate under the action of the compression spring. The limiting plate is provided with a concave limiting groove in contact with the pressing rod. The bottom of the pressing rod is in contact with the lifting ring; On the bottle conveyor belt, there are a number of groups of clamping and positioning parts with the same structure. The clamping and positioning parts include a first clamping part and a second clamping part. The first clamping part and the second clamping part have the same structure and are symmetrically installed on the front and back sides of the bottle conveyor belt. The first clamping part includes a clamping driving cylinder and a clamping seat. The clamping driving cylinder is fixed on one side of the bottle conveyor belt. The clamping driving cylinder is drivingly connected to the clamping seat. The clamping driving cylinder drives the clamping seat to move back and forth. The clamping seat includes a number of groups of clamping frames with the same structure. The number of groups of clamping frames is connected and fixed by a linkage plate. The linkage plate is drivingly connected to the clamping driving cylinder. The clamping frame is fixed on the linkage plate. The clamping frame includes an upper clamping block, a lower clamping block and a spacer. The upper clamping block and the lower clamping block are symmetrically installed on the upper and lower sides of the spacer. The upper clamping block and the lower clamping block have the same structure. The upper clamping block is provided with a concave clamping groove, and the clamping groove matches the outer shape of the bottle.

2. The automatic ring pressing device according to claim 1, characterized in that: The pressure bar includes a fixed block and a support bar. The fixed block is fixedly connected to the pressure ring plate. An installation groove is provided below the fixed block. The support bar is located in the installation groove and is rotatably connected to the fixed block. A rotating shaft is installed above the support bar and is rotatably connected to the fixed block. The support bar swings back and forth along the rotating shaft. A placement part for placing a compression spring is provided below the support bar. A cushion block made of an elastic material is installed at the bottom of the support bar.

3. The automatic pressure ring device according to claim 2, characterized in that: The placement part includes a first stop block and a second stop block. The first stop block and the second stop block are arranged at intervals up and down and are fixed on the support bar. The distance between the first stop block and the second stop block forms a placement groove for placing a compression spring.

4. The automatic pressure ring device according to claim 3, characterized in that: The pressure ring driving cylinder is fixedly connected to the installation bracket through a first support plate. There are four pressure ring heads. The four pressure ring heads are arranged side by side and are connected by a first driving plate. The pressure ring driving cylinder is drivingly connected to the first driving plate. The first driving plate is arranged below the first support plate. The pressure ring heads are all fixed below the first driving plate. At least one guide rod is provided on each pressure ring head. The top end of the guide rod is fixedly connected to the first support plate. The bottom of the guide rod passes through the first driving plate and the pressure ring plate.

5. The automatic pressure ring device according to any one of claims 1-4, characterized in that: The loading manipulator and the unloading manipulator have the same structure. The loading manipulator includes a Y-axis driving member, a Z-axis loading cylinder, and a loading rack. The Y-axis driving member is fixedly connected to the workbench through a loading support frame. The Y-axis driving member is drivingly connected to the Z-axis loading cylinder. The loading rack is arranged below the Z-axis loading cylinder and is drivingly connected to the Z-axis loading cylinder. The loading rack includes a loading plate and a plurality of vacuum suction nozzles installed below the loading plate.

6. The automatic pressure ring device according to claim 5, characterized in that: The ring lifting conveyor belt includes a base belt, a first motor, a driving shaft, and a driven shaft. The first motor is drivingly connected to the driving shaft. The base belt moves back and forth between the driving shaft and the driven shaft. Limiting columns are equidistantly arranged on the front and back sides of the base belt respectively. The limiting columns are vertically fixed on the base belt. The pressure ring guiding jig is placed on the base belt. The limiting columns are inserted into the pressure ring guiding jig.

7. The automatic pressure ring device according to claim 6, characterized in that: The pressing ring guiding fixture includes a positioning cylinder and a supporting backing plate fixed above the positioning cylinder. An inner cavity with an open bottom structure is provided in the positioning cylinder. The positioning cylinder is made of a metal material, and the supporting backing plate is made of plastic. The supporting backing plate is of a disc structure. The supporting backing plate and the positioning cylinder are fixedly connected by screws. The positioning cylinder includes an upper supporting part and a lower supporting part. The upper supporting part is of a frustum structure, and the lower supporting part is of a cylindrical structure. The outer diameter of the lower supporting part is greater than or equal to the outer diameter of the bottom end face of the upper supporting part. The diameter of the supporting backing plate is less than or equal to the diameter of the top end face of the upper supporting part. The inner hole diameter of the lower supporting part is matched with the outer diameter of the bottle mouth of the bottle body. The bottle mouth of the bottle body is inserted into the lower supporting part. A protruding annular retaining strip is provided in the inner cavity of the positioning cylinder. The annular retaining strip is arranged along the top of the lower supporting part. The annular retaining strip is coaxially arranged with the lower supporting part.

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