Wall thickness detection device for plastic bottle blank production

Abstract

The utility model discloses a wall thickness detection device for plastic bottle blank production, and belongs to the technical field of plastic bottle detection. The utility model discloses a wall thickness detection device for plastic bottle blank production. The clamping assembly is fixedly arranged on the measuring table so as to fix the plastic bottle blank; the push plate is movably arranged on the measuring table; the main machine is fixedly arranged on the push plate; the upper push rod can be movably arranged on the host; the first detection head is fixedly arranged at the bottom end of the upper push rod; the lower substrate is fixedly arranged on the push plate and is arranged below the first detection head; the telescopic cylinder is fixedly arranged on the lower substrate, and the second detection head is movably arranged in the telescopic cylinder and corresponds to the first detection head in position; and the second detection head is connected with the telescopic cylinder through a first spring. The wall thickness detection device for production of the plastic bottle blanks has the beneficial effect that the wall thickness detection device for production of the plastic bottle blanks can adapt to bottle bodies with different diameters.

Description

Technical Field

[0001] The present application relates to the technical field of plastic bottle detection, and in particular to a wall thickness detection device for plastic bottle preform production. Background Art

[0002] The production of plastic bottle preforms is an important link in the plastic bottle manufacturing process. The preforms are manufactured through the injection molding process and then made into the final plastic bottles through the blow molding process. After the plastic bottle preforms are produced, they need to go through multiple testing processes, and wall thickness testing is one of them. The wall thickness testing used in the production of plastic bottle preforms requires the use of professional monitoring equipment.

[0003] For example, the patent number (CN208139990U) is a device for detecting the wall thickness of plastic bottle blanks, which includes a base, a column, an upper cross bar, a lower cross bar, a dial indicator, and an adjusting sleeve. The column is arranged on the base, and the column is provided with a horizontal upper cross bar and a lower cross bar from top to bottom. The dial indicator is arranged on the end of the upper cross bar away from the column, and the adjusting sleeve is sleeved on the lower cross bar. The adjusting sleeve is provided with a screw locking bolt, and an annular sleeve is provided on the side of the adjusting sleeve away from the column so that the bottle blank mouth can be sleeved on the annular sleeve. The end of the lower cross bar away from the column measures the zeroing convex point, and the measurement The zero calibration convex point contacts the measuring head of the dial indicator, and is characterized in that: the dial indicator is an electronic dial indicator, a control box is provided on the side of the column, a guide rail is provided on the base opposite to the lower cross bar, a screw motor is provided at the end of the guide rail, the screw sleeve of the screw motor is provided with a slider, and the slider slides with the guide rail, a drive motor is provided on the slider, the power output shaft of the drive motor is provided with a rotary joint, and the rotary joint corresponds to the end of the lower cross bar away from the column, the surface of the rotary joint is concave, and the surface is provided with an anti-slip pad, and the control box is electrically connected to the electronic dial indicator, the screw motor, and the drive motor respectively.

[0004] In the above structure, the measurement zero calibration convex point is placed in the plastic bottle preform and fits against the inner wall of the plastic bottle preform, and then a dial indicator is used to detect the wall thickness. However, since the bottle mouth diameter and bottle body diameter of the plastic bottle preform are different, the measurement zero calibration convex point in the above structure cannot adapt to plastic bottle preforms with bottle mouths and bottle bodies of different sizes.

[0005] In view of this, the purpose of the present invention is to provide a wall thickness detection device for producing plastic bottle blanks that can adapt to bottles of different diameters. Utility Model Content

[0006] The content of this application is used to briefly introduce concepts that will be described in detail in the detailed description section below. The content of this application is not intended to identify key features or essential features of the technical solution for which protection is sought, nor is it intended to limit the scope of the technical solution for which protection is sought.

[0007] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide a wall thickness detection device for plastic bottle preform production, comprising:

[0008] Measuring platform;

[0009] A clamping assembly is fixedly arranged on the measuring table to fix the plastic bottle blank;

[0010] A push plate, movably arranged on the measuring table;

[0011] The main unit is fixed on the push plate;

[0012] An upper push rod is movable and can be set on the host;

[0013] The first detection head is fixedly arranged at the bottom end of the upper push rod;

[0014] The lower base plate is fixedly mounted on the push plate and is disposed below the first detection head;

[0015] The telescopic cylinder is fixed on the lower base plate.

[0016] The second detection head is movably arranged in the telescopic cylinder and corresponds to the position of the first detection head;

[0017] The second detection head is connected to the telescopic cylinder via a first spring.

[0018] During operation, the clamping assembly can clamp and fix the plastic bottle preform. When the wall thickness needs to be detected, the push plate is driven to move, and the push plate can drive the first detection head and the second detection head to move in the direction close to the plastic bottle preform. When the second detection head moves to the bottle mouth of the plastic bottle preform, since the second detection head is movably arranged in the telescopic cylinder, the second detection head and the telescopic cylinder can be extended into the plastic bottle preform by driving the second detection head into the telescopic cylinder. Since the second detection head and the telescopic cylinder are connected by a first spring, when the second detection head enters the interior of the plastic bottle preform, the first spring can drive the second detection head to move out of the telescopic cylinder until the top of the second detection head contacts the inner wall of the plastic bottle preform. At this time, the upper push rod is moved to make the first detection head fit against the outer wall of the plastic bottle preform, and the wall thickness of the plastic bottle preform is measured by induction of the first detection head and the second detection head.

[0019] Furthermore, a mounting groove is formed through a surface portion of the lower base plate, and the telescopic cylinder is fixedly disposed in the mounting groove. The telescopic cylinder and the mounting groove are centrally symmetrical along the height direction.

[0020] Furthermore, a first moving groove is formed on the telescopic cylinder, and a second moving groove corresponding to the first moving groove is formed on the lower base plate;

[0021] A driving plate is fixedly arranged on the second detection head. An inclined first driving surface is formed on the driving plate. The driving plate is movably arranged in the first moving groove and the second moving groove.

[0022] Furthermore, a guide groove extending along the length direction of the measuring platform is formed through a surface portion of the measuring platform, and the push plate is movably arranged in the guide groove;

[0023] The bottom surface of the push plate is fixedly connected to the rack, and the bottom surface of the measuring table is rotatably provided with a gear, and the gear is meshed with the rack;

[0024] A driving motor is fixedly installed on the measuring table, and an output shaft of the driving motor is fixedly connected to the gear and is coaxially arranged.

[0025] Furthermore, the rack and gear outer covers are provided with dust covers.

[0026] Furthermore, the clamping assembly includes:

[0027] A base plate, fixedly arranged on the measuring platform;

[0028] A plurality of fixed plates are provided, and the plurality of fixed plates are fixedly arranged on the bottom plate in a circular array;

[0029] A plurality of clamping plates are provided and are arranged corresponding to the fixing plate. The clamping plates are arranged on the inner side of the fixing plate and are connected to the fixing plate through a second spring.

[0030] Furthermore, a second inclined driving surface is formed on a side of the clamping plate away from the bottom plate.

[0031] The beneficial effects of this application are:

[0032] First, since the second detection head is connected to the telescopic cylinder through the first spring, when the second detection head enters the interior of the plastic bottle preform, the second detection head can automatically fit with the inner wall of the plastic bottle preform according to the bottle body diameter of the plastic bottle preform.

[0033] Second, by providing the driving plate and the first driving surface, when the second detection head moves to the bottle mouth of the plastic bottle blank, the first driving surface can come into contact with the bottle mouth, thereby driving the second detection head to move into the telescopic cylinder, so that the second detection head can smoothly enter the plastic bottle blank from the bottle mouth.

[0034] 3. When placing the plastic bottle blank into the clamping assembly, by providing a second driving surface, the second driving surface can contact the plastic bottle to drive the clamping plate to move, so that the plastic bottle blank can smoothly enter between the multiple clamping plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings constituting a part of this application are used to provide a further understanding of this application and make other features, purposes and advantages of this application more apparent. The drawings and descriptions of the exemplary embodiments of this application are used to explain this application and do not constitute an improper limitation on this application.

[0036] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the elements and components are not necessarily drawn to scale.

[0037] In the attached figure:

[0038] Figure 1 This is an overall schematic diagram according to the embodiment of the present application Figure 1 ;

[0039] Figure 2 It is a schematic cross-sectional view of part of the embodiment, mainly showing the positions of the plastic bottle blank and the second detection head;

[0040] Figure 3 This is an overall schematic diagram according to the embodiment of the present application Figure 2 ;

[0041] Figure 4 This is an exploded view of the installation of a portion of the structure according to an embodiment of the present application, mainly showing the connection structure between the second detection head and the telescopic cylinder;

[0042] Figure 5 It is a partial structural cross-sectional schematic diagram according to an embodiment of the present application, mainly showing the connection structure of the gear and the rack.

[0043] Reference numerals:

[0044] 1. Measuring table; 2. Clamping assembly; 3. Push plate; 4. Main unit; 5. Display screen; 6. Upper push rod; 7. First detection head; 8. Lower base plate; 9. Telescopic cylinder; 10. Second detection head; 11. First spring; 12. Mounting slot; 13. First movable slot; 14. Second movable slot; 15. Drive plate; 16. First drive surface; 17. Guide slot; 18. Rack; 19. Gear; 20. Dust cover; 21. Drive motor; 22. Bottom plate; 23. Fixed plate; 24. Clamping plate; 25. Second spring; 26. Second drive surface. DETAILED DESCRIPTION

[0045] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.

[0046] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0047] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0048] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more".

[0049] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0050] A wall thickness detection device for plastic bottle preform production includes a measuring platform 1 and a clamping assembly 2 fixedly arranged on the measuring platform 1, the clamping assembly 2 can clamp and fix the plastic bottle preform; a push plate 3 is movably arranged on the measuring platform 1, a main unit 4 is fixedly mounted on the push plate 3, and a display screen 5 is provided on the main unit 4 to display measurement data; an upper push rod 6 is movably arranged on the main unit 4, a first detection head 7 is fixedly arranged at the bottom end of the upper push rod 6, a lower base plate 8 is fixedly arranged on the push plate 3 below the first detection head 7, a telescopic cylinder 9 is fixedly arranged on the lower base plate 8, a second detection head 10 is movably arranged in the telescopic cylinder 9, the second detection head 10 corresponds to the position center of the first detection head 7, and the bottom surface of the second detection head 10 is connected to the bottom wall of the telescopic cylinder 9 by a first spring 11.

[0051] During use, the plastic bottle preform is clamped and fixed on the clamping assembly 2, and the push plate 3 is moved to move the first detection head 7 and the second detection head 10 closer to the plastic bottle preform. When the second detection head 10 moves to the bottle mouth of the plastic bottle preform, the second detection head 10 is driven to move into the telescopic cylinder 9, so that the telescopic cylinder 9 and the second detection head 10 can smoothly enter the plastic bottle preform from the bottle mouth. After the second detection head 10 enters the interior of the plastic bottle preform, since the bottom surface of the second detection head 10 is connected to the bottom wall of the telescopic cylinder 9 by the first spring 11, the first spring 11 can push the second detection head 10 out of the telescopic cylinder 9 until the top of the second detection head 10 contacts the inner wall of the plastic bottle preform. At this time, the upper push rod 6 is moved, and the upper push rod 6 pushes the first detection head 7 to contact the outer wall of the plastic bottle preform. The wall thickness of the plastic bottle preform is measured by the induction of the first detection head 7 and the second detection head 10 and the data is transmitted to the host 4; by moving the push plate 3, the first detection head 7 and the second detection head 10 are moved to different depths inside the plastic bottle preform, so that the wall thickness of the plastic bottle preform at different positions can be detected.

[0052] Furthermore, in order to facilitate the telescopic cylinder 9 and the second detection head 10 to enter the plastic bottle blank from the bottle mouth, the surface portion of the lower base plate 8 is penetrated to form a mounting groove 12, and the telescopic cylinder 9 is fixedly set in the mounting groove 12. The telescopic cylinder 9 and the mounting groove 12 are centrally symmetrical along the height direction, and the middle part of the lower base plate 8 is aligned with the center of the plastic bottle blank.

[0053] A first movable groove 13 is formed through the side wall portion of the telescopic cylinder 9, and a second movable groove 14 corresponding to the first movable groove 13 is formed through the surface portion of the lower base plate 8; a driving plate 15 is fixedly arranged on the second detection head 10, and an inclined first driving surface 16 is formed on the driving plate 15. The driving plate 15 is movably arranged in the first movable groove 13 and the second movable groove 14. When the second detection head 10 moves to the bottle mouth of the plastic bottle preform, the bottle mouth of the plastic bottle preform can contact the first driving surface 16 to drive the second detection head 10 to move into the telescopic cylinder 9, so that the second detection head 10 and the telescopic cylinder 9 can smoothly enter the plastic bottle preform.

[0054] Specifically, a guide groove 17 extending along the length direction of the measuring platform 1 is formed through the surface portion of the measuring platform 1, and the push plate 3 is movably arranged in the guide groove 17; the bottom surface of the push plate 3 is fixedly connected to the rack 18, and a gear 19 is rotatably set on the bottom surface of the measuring platform 1. The gear 19 is meshed with the rack 18, and a dust cover 20 is provided on the outer cover of the gear 19 and the rack 18 to prevent dust from falling on the gear 19 and the rack 18 and affecting the transmission effect. The dust cover 20 is fixedly installed on the measuring platform 1, and a drive motor 21 is fixedly installed on the bottom surface of the dust cover 20. The output shaft of the drive motor 21 is inserted through the dust cover 20 and fixedly connected to the gear 19 and is coaxially arranged; the drive motor 21 can drive the gear 19 to rotate, thereby driving the rack 18 and the push plate 3 to move.

[0055] Specifically, the clamping assembly 2 includes a base plate 22, a fixed plate 23 and a clamping plate 24. The base plate 22 is fixedly set on the measuring table 1. Six fixed plates 23 are provided, and the six fixed plates 23 are arranged in a circular array. Six clamping plates 24 are also provided and are arranged on the inner side of the fixed plate 23 and correspond to the fixed plates 23 one by one. The clamping plates 24 and the fixed plates 23 are connected by a second spring 25. The side of the clamping plate 24 away from the base plate 22 forms an inclined second driving surface 26; when the plastic bottle preform is inserted inward, the plastic bottle preform will conflict with the second driving surface 26, driving the clamping plate 24 to move in the direction close to the fixed plate 23, so that the plastic bottle preform can smoothly enter between the multiple clamping plates 24, and the second spring 25 gives the clamping plate 24 a thrust to clamp the plastic bottle preform.

[0056] The specific working principle is as follows:

[0057] Insert the plastic bottle into the middle of the clamping plate 24, and the plastic bottle contacts the second driving surface 26 on the clamping plate 24 to drive the clamping plate 24 to move so that the plastic bottle can smoothly enter between the clamping plates 24. The second spring 25 gives the clamping plate 24 a thrust to clamp the plastic bottle; start the driving motor 21 to drive the push plate 3 to move in the direction close to the plastic bottle, and the push plate 3 drives the first detection head 7 and the second detection head 10 to move. When the second detection head 10 reaches the bottle mouth of the plastic bottle, the first driving surface 16 contacts the plastic bottle. The bottle mouth of the plastic preform contacts and drives the first detection head 7 to move into the telescopic cylinder 9. When the second detection head 10 and the telescopic cylinder 9 successfully enter the interior of the plastic bottle preform, the first spring 11 drives the second detection head 10 to move out of the telescopic cylinder 9 until it contacts the inner wall of the plastic bottle preform; the upper push rod 6 is moved to make the first detection head 7 contact the outer wall of the plastic bottle preform. The wall thickness of the plastic bottle preform can be measured through the induction of the first detection head 7 and the second detection head 10, and the data is transmitted to the host 4, and the host 4 displays the data on the display screen 5 for easy viewing.

[0058] The above description is only an illustration of some preferred embodiments of the present disclosure and the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A wall thickness detection device for plastic bottle preform production, comprising: Measuring platform (1); A clamping assembly (2) is fixedly arranged on the measuring table (1) to fix the plastic bottle blank; Its characteristics are: The wall thickness detection device for producing plastic bottle blanks further comprises: A push plate (3) is movably arranged on the measuring platform (1); A main machine (4) is fixedly mounted on the push plate (3); An upper push rod (6) is movably disposed on the main machine (4); A first detection head (7) is fixedly arranged at the bottom end of the upper push rod (6); A lower base plate (8) is fixedly mounted on the push plate (3) and is disposed below the first detection head (7); The telescopic cylinder (9) is fixedly arranged on the lower base plate (8). A second detection head (10) is movably disposed in the telescopic cylinder (9) and corresponds to the position of the first detection head (7); The second detection head (10) is connected to the telescopic cylinder (9) via a first spring (11).

2. A wall thickness detection device for plastic bottle preform production according to claim 1, characterized in that: A mounting groove (12) is formed through a surface portion of the lower base plate (8), the telescopic cylinder (9) is fixedly arranged in the mounting groove (12), and the telescopic cylinder (9) and the mounting groove (12) are centrally symmetrical along the height direction.

3. A wall thickness detection device for plastic bottle preform production according to claim 2, characterized in that: A first movable groove (13) is formed on the telescopic cylinder (9), and a second movable groove (14) corresponding to the first movable groove (13) is formed on the lower base plate (8); A driving plate (15) is fixedly arranged on the second detection head (10), and an inclined first driving surface (16) is formed on the driving plate (15). The driving plate (15) is movably arranged in the first movable groove (13) and the second movable groove (14).

4. The wall thickness detection device for plastic bottle preform production according to claim 1, characterized in that: A guide groove (17) extending along the length direction of the measuring platform (1) is formed through a surface portion of the measuring platform (1), and the push plate (3) is movably arranged in the guide groove (17); The bottom surface of the push plate (3) is fixedly connected to a rack (18), and the bottom surface of the measuring platform (1) is rotatably provided with a gear (19), and the gear (19) is meshedly connected with the rack (18); A driving motor (21) is fixedly mounted on the measuring platform (1), and an output shaft of the driving motor (21) is fixedly connected to the gear (19) and is coaxially arranged.

5. The wall thickness detection device for plastic bottle preform production according to claim 4, characterized in that: The rack (18) and the gear (19) are covered with a dust cover (20).

6. The wall thickness detection device for plastic bottle preform production according to claim 1, characterized in that: The clamping assembly (2) comprises: A bottom plate (22) is fixedly mounted on the measuring platform (1); A plurality of fixed plates (23) are provided, wherein the plurality of fixed plates (23) are fixedly provided on the bottom plate (22) in a circular array; A plurality of clamping plates (24) are provided and are arranged corresponding to the fixing plate (23). The clamping plates (24) are arranged on the inner side of the fixing plate (23) and are connected to the fixing plate (23) via a second spring (25).

7. A wall thickness detection device for plastic bottle preform production according to claim 6, characterized in that: A second inclined driving surface (26) is formed on a side of the clamping plate (24) away from the bottom plate (22).

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