Automatic detection device for plastic bottle blank

Abstract

The utility model relates to the technical field of plastic bottle blanks, in particular to a plastic bottle blank automatic detection device which comprises a base, a supporting plate and a supporting block, the supporting plate is arranged on the side face of the base, the supporting block is arranged at the upper end of the base, and an inflation structure is arranged at the upper end of the base; when the device is used and a bottle preform needs to be mounted, a first hydraulic rod is shrunk, a soft convex block is shrunk, the length of the first hydraulic rod is shortened, then the top end of the bottle preform is screwed into a threaded mounting seat to be fixed, and at the moment, the first hydraulic rod is opened, so that the first hydraulic rod extends out, and the soft convex block is pushed to extend out; according to the bottle preform length detection device, the soft protruding block is attached to the bottom end of the bottle preform, so that the device can detect the bottle preforms with different lengths, the length of the bottle preform can be detected by extending the first hydraulic rod out of the attaching distance between the soft protruding block and the bottom end of the bottle preform, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bottle preforms, and particularly relates to an automatic detection device for plastic bottle preforms. Background Art

[0002] Plastic bottle preforms are important tools in the bottle production process. The quality of the preforms determines the quality of the bottles. Most of the existing preform detection devices rely on manual detection or semi-automatic devices. Therefore, an automatic detection device for plastic bottle preforms needs to be set up to meet the existing detection requirements. However, the existing devices still have certain defects in use, such as:

[0003] A preform wall thickness detection device disclosed in the patent number "CN202022995338.9". When this device is in use, the first motor drives the rotating shaft to rotate slowly, and the lead screw assembly drives the sliding table, the rotating shaft and the preform to slide horizontally, thereby effectively replacing manual rotation or sliding of the preform and realizing linear measurement of the overall wall thickness of the preform, effectively improving the measurement accuracy and efficiency of the preform. However, when this device is in use, since the protruding part is fixed, the length specification of the preform that can be fixed is fixed, resulting in the inability to detect preforms of different lengths and reducing the practicability of the device. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an automatic detection device for plastic bottle preforms to solve the above problems, improving the problem that the existing automatic detection device for plastic bottle preforms cannot detect preforms of different lengths.

[0005] An automatic detection device for plastic bottle preforms includes a base, a support plate and a support block: a support plate is arranged on the side of the base, a support block is arranged on the upper end of the base, and an inflation structure is arranged on the upper end of the base;

[0006] The inflation structure includes an air inflation pump and an air inlet block. The air inflation pump is arranged on the upper end of the base, the air inlet block is arranged on the side of the support block, and the air inlet block penetrates through the support block.

[0007] Preferably, a protective shell is arranged on the side of the support block, a driving motor is arranged on the side of the support plate, a rotating shaft is arranged at the top of the driving motor, and the rotating shaft penetrates through the support plate and the support block.

[0008] Preferably, a gear is arranged at the top of the rotating shaft, the rotating shaft penetrates through the protective shell, a threaded mounting seat is arranged on the side of the support block, a tooth block is arranged on the surface of the threaded mounting seat, and the tooth block is meshed with the gear.

[0009] Preferably, an air outlet hole is opened inside the air inlet block, a first hydraulic rod is arranged inside the air inlet block, and a soft convex block is arranged at the top of the first hydraulic rod.

[0010] Preferably, a fixing block is provided at the upper end of the first hydraulic rod, a movable convex block is provided at the upper end of the fixing block, a support spring is provided inside the fixing block, and the movable convex block is slidably connected to the fixing block.

[0011] Preferably, a second hydraulic rod is provided on the side of the support block, a connecting plate is provided at the upper end of the second hydraulic rod, and a dial indicator is provided at the upper end of the connecting plate, and the dial indicator penetrates through the connecting plate.

[0012] Preferably, a first motor is provided on the side of the base, a lead screw is provided at the top of the first motor, and a sliding plate is provided on the surface of the lead screw.

[0013] Preferably, a limiting block is provided on the side of the sliding plate, the sliding plate is threadedly connected to the lead screw, and the sliding plate is slidably connected to the base.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. Through the settings of the threaded mounting seat, the first hydraulic rod and the soft convex block, when the device is in use and it is necessary to install the preform, first, the first hydraulic rod contracts to retract the soft convex block and shorten the length of the first hydraulic rod. Subsequently, the top of the preform is screwed into the inside of the threaded mounting seat for fixation. At this time, the first hydraulic rod is opened to extend the first hydraulic rod, pushing the soft convex block to extend so that the soft convex block fits with the bottom end of the preform. In this way, the device can detect preforms of different lengths, and the length of the preform can be detected by the distance that the first hydraulic rod extends the soft convex block to fit with the bottom end of the preform, thereby increasing the practicability of the device. Description of the Drawings

[0016] Figure 1 is the overall front view three-dimensional structure schematic diagram of the present utility model;

[0017] Figure 2 is the overall rear view three-dimensional structure schematic diagram of the present utility model;

[0018] Figure 3 is the three-dimensional structure schematic diagram of the gear and the tooth block installation of the present utility model;

[0019] Figure 4 is the three-dimensional structure schematic diagram of the installation of the movable convex block and the support spring of the present utility model;

[0020] Figure 5 is the three-dimensional structure schematic diagram of the installation of the first motor and the lead screw of the present utility model.

[0021] In the figure: 1, base; 2, support plate; 3, support block; 4, connecting plate; 5, air pump; 6, air inlet block; 7, drive motor; 8, rotating shaft; 9, protective housing; 10, gear; 11, threaded mounting seat; 12, tooth block; 13, first hydraulic rod; 14, soft bump; 15, second hydraulic rod; 16, dial indicator; 17, fixed block; 18, movable bump; 19, support spring; 20, first motor; 21, lead screw; 22, sliding plate; 23, limit block; 24, inflation structure. Detailed implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] During specific implementation: As Figures 1-5 shown, an automatic plastic bottle preform detection device includes a base 1, a support plate 2 and a support block 3: A support plate 2 is arranged on the side of the base 1, a support block 3 is arranged on the upper end of the base 1, and an inflation structure 24 is arranged on the upper end of the base 1;

[0024] The inflation structure 24 includes an air pump 5 and an air inlet block 6. An air pump 5 is arranged on the upper end of the base 1, an air inlet block 6 is arranged on the side of the support block 3, and the air inlet block 6 penetrates through the support block 3;

[0025] When the device is in use, first screw the bottle preform into the inside of the threaded mounting seat 11 to fix the bottle preform, and make the air inlet block 6 snap into the bottle mouth of the bottle preform and make the air inlet block 6 fit against the inner wall of the bottle mouth. Then turn on the air pump 5 to make the air pump 5 inflate the air inlet block 6, and enter the inside of the bottle preform through the air outlet of the air inlet block 6. When the inside of the bottle preform is filled with air, if inflation can continue, it means that there is a breakage on the surface of the bottle preform and it is not completely sealed. When inflation cannot be carried out, it indicates that the sealing performance of the bottle preform is intact.

[0026] A protective housing 9 is arranged on the side of the support block 3, a drive motor 7 is arranged on the side of the support plate 2, a rotating shaft 8 is arranged at the top of the drive motor 7, and the rotating shaft 8 penetrates through the support plate 2 and the support block 3;

[0027] A gear 10 is arranged at the top of the rotating shaft 8. The rotating shaft 8 penetrates through the protective housing 9. A threaded mounting seat 11 is arranged on the side of the support block 3. A tooth block 12 is arranged on the surface of the threaded mounting seat 11, and the tooth block 12 is meshed with the gear 10;

[0028] When the device is in use, screw the top of the preform into the inside of the threaded mounting base 11. Subsequently, when the preform needs to be rotated, turn on the drive motor 7, so that the drive motor 7 drives the rotating shaft 8 to rotate. The rotating shaft 8 drives the gear 10 to rotate. Since the gear 10 meshes with the tooth block 12, the gear 10 drives the threaded mounting base 11 to rotate, and the rotating direction of the threaded mounting base 11 is opposite to the direction in which the preform is screwed into the threaded mounting base 11, so as to achieve the purpose of rotating the preform.

[0029] An air outlet hole is provided inside the air inlet block 6, and a first hydraulic rod 13 is arranged inside the air inlet block 6. A soft convex block 14 is arranged at the top end of the first hydraulic rod 13;

[0030] When the device is in use, first retract the first hydraulic rod 13, and then screw the preform into the inside of the threaded mounting base 11 to prevent the first hydraulic rod 13 from being too long and causing the installation of a shorter preform to fail. Subsequently, the first hydraulic rod 13 extends, pushing the soft convex block 14 to fit against the inner bottom end of the preform. In this way, according to the length of the extension of the first hydraulic rod 13 plus a fixed different length, the length of the preform can be measured.

[0031] A fixed block 17 is arranged at the upper end of the first hydraulic rod 13. A movable convex block 18 is arranged at the upper end of the fixed block 17. A support spring 19 is arranged inside the fixed block 17. The movable convex block 18 is slidably connected to the fixed block 17;

[0032] A second hydraulic rod 15 is arranged on the side of the support block 3. A connecting plate 4 is arranged at the upper end of the second hydraulic rod 15. A dial indicator 16 is arranged at the upper end of the connecting plate 4. The dial indicator 16 penetrates through the connecting plate 4;

[0033] When the device is in use, first press the movable convex block 18 to compress the movable convex block 18 into the inside of the fixed block 17. Then screw the preform into the inside of the threaded mounting base 11. Subsequently, the movable convex block 18 is pushed out by the support spring 19 to make the movable convex block 18 fit against the inner wall of the preform. Then turn on the second hydraulic rod 15 to make the second hydraulic rod 15 contract, drive the connecting plate 4 downward, and drive the dial indicator 16 to fit against the outer wall of the preform through the connecting plate 4. Subsequently, the preform rotates to enable the dial indicator 16 to display the wall thickness change of the preform in real time to detect the wall thickness of the preform.

[0034] A first motor 20 is arranged on the side of the base 1. A lead screw 21 is arranged at the top end of the first motor 20. A sliding plate 22 is arranged on the surface of the lead screw 21;

[0035] A limiting block 23 is arranged on the side of the sliding plate 22. The sliding plate 22 is threadedly connected to the lead screw 21. The sliding plate 22 is slidably connected to the base 1;

[0036] When the device is in use and the preform is screwed into the inside of the threaded mounting seat 11, the first motor 20 is turned on at this time, so that the first motor 20 drives the lead screw 21 to rotate. Since the threads on both sides of the lead screw 21 are opposite, the two sliding plates 22 move inward on the surface of the lead screw 21 at the same time, and push the limit block 23 to fit with the preform to limit the preform and prevent it from falling off during rotation.

[0037] When the utility model is in use, first press the movable convex block 18, then pass the mouth of the preform through the first hydraulic rod 13 and screw it into the inside of the threaded mounting seat 11, so that the air inlet block 6 fits with the inner wall of the mouth of the preform. Then turn on the air pump 5 to inflate the inside of the preform to detect the airtightness of the preform. Then turn on the second hydraulic rod 15 to make the second hydraulic rod 15 contract, driving the connecting plate 4 to move downward, so that the connecting plate 4 drives the dial indicator 16 to move downward and fit with the outer wall of the preform. The movable convex block 18 fits with the inner wall of the preform through the rebound of the support spring 19. Then turn on the drive motor 7 to make the drive motor 7 drive the threaded mounting seat 11 to rotate, so as to drive the preform to rotate, thereby detecting the thickness of the preform through the dial indicator 16, and the motors used in this device all have a self-locking function.

[0038] 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 way 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. A plastic preform automatic detection device, characterized in that: The invention comprises a base (1), a support plate (2) and a support block (3): the side of the base (1) is provided with a support plate (2), the upper end of the base (1) is provided with a support block (3), and the upper end of the base (1) is provided with an inflatable structure (24); The inflation structure (24) comprises an inflation pump (5) and an air intake block (6); the inflation pump (5) is arranged at the upper end of the base (1); the air intake block (6) is arranged on the side of the support block (3); and the air intake block (6) penetrates the support block (3).

2. The automatic detection device for plastic preforms according to claim 1, characterized in that: A protective shell (9) is provided on the side of the support block (3), a drive motor (7) is provided on the side of the support plate (2), a rotating shaft (8) is provided at the top end of the drive motor (7), and the rotating shaft (8) passes through the support plate (2) and the support block (3).

3. The automatic detection device for plastic preforms according to claim 2, characterized in that: A gear (10) is arranged at the top end of the rotating shaft (8), the rotating shaft (8) passes through the protective shell (9), a threaded mounting seat (11) is arranged on the side of the supporting block (3), a tooth block (12) is arranged on the surface of the threaded mounting seat (11), and the tooth block (12) is meshedly connected with the gear (10).

4. The automatic detection device for plastic preforms according to claim 2, characterized in that: An air outlet hole is provided inside the air intake block (6), a first hydraulic rod (13) is provided inside the air intake block (6), and a soft bump (14) is provided at the top end of the first hydraulic rod (13).

5. The automatic detection device for plastic preforms according to claim 4, characterized in that: A fixed block (17) is provided at the upper end of the first hydraulic rod (13), a movable protrusion (18) is provided at the upper end of the fixed block (17), a supporting spring (19) is provided inside the fixed block (17), and the movable protrusion (18) is slidably connected to the fixed block (17).

6. The automatic detection device for plastic preforms according to claim 1, characterized in that: A second hydraulic rod (15) is arranged on the side of the support block (3); a connecting plate (4) is arranged on the upper end of the second hydraulic rod (15); a micrometer (16) is arranged on the upper end of the connecting plate (4); and the micrometer (16) passes through the connecting plate (4).

7. The automatic detection device for plastic preforms according to claim 1, characterized in that: A first motor (20) is arranged on the side of the base (1), a screw rod (21) is arranged on the top of the first motor (20), and a sliding plate (22) is arranged on the surface of the screw rod (21).

8. The automatic detection device for plastic preforms according to claim 7, characterized in that: A limit block (23) is provided on the side of the sliding plate (22); the sliding plate (22) is threadedly connected to the screw rod (21); and the sliding plate (22) is slidably connected to the base (1).

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