Cosmetic bottle silk screen positioning device

Abstract

The utility model discloses a cosmetic bottle silk screen positioning device relates to silk screen positioning field. Cosmetic bottle silk screen positioning device workstation, install the support board on the workstation and install the silk screen machine on the support board, the just below of silk screen machine is provided with the positioning rod for positioning cosmetic bottle, the surface of positioning rod is equipped with the reset unit for pushing the reset of cosmetic bottle, and the device pushes the horizontal movement of push -pad to the direction of cosmetic bottle through electric push -rod, and push -pad gently pushes cosmetic bottle into the clamping area between two positioning plates in the process of advancing, and the positioning rod that sets up in the just above of positioning plate inserts into the inside of cosmetic bottle simultaneously, and the end portion of it is pressed against the inside of bottle bottom, under the joint action of the outside thrust of push -pad and the inside support of positioning rod, cosmetic bottle is firmly clamped and accurately positioned, and is limited by positioning plate left and right, and this double positioning mechanism effectively overcomes the offset or shaking problem that the bottle body of the different type is caused because of the complex curve, the unstable gravity.

Description

Technical Field

[0001] This utility model relates to the field of screen printing positioning technology, specifically a screen printing positioning device for cosmetic bottles. Background Technology

[0002] In the cosmetic packaging manufacturing industry, screen printing machines are widely used to precisely print patterns, logos, or decorative text on the surface of cosmetic bottles using screen printing technology. Among them, the positioning device, as the core component of the screen printing machine, directly determines the repeatability and registration accuracy of the printing—especially in multi-color printing or complex layer alignment processes, it is essential to ensure that the bottle's position and height are consistent with each printing.

[0003] In the prior art, such as the high-precision screen printing machine disclosed in Chinese Utility Model Patent CN211280154U, the structure includes a printing assembly, a screen printing stencil, and a worktable that can move horizontally along the X and Y directions, arranged sequentially from top to bottom on a base. A dedicated screen printing fixture is provided on the worktable, equipped with an alignment component, while the bottom surface of the screen printing stencil has corresponding sensing points, which, in conjunction with the sensing components on the worktable, achieve fixture positioning and stencil alignment.

[0004] However, this design has obvious limitations in practical applications: its positioning mechanism is mainly optimized for regular-shaped bottles (such as cylindrical or square bottles), and it is difficult to achieve stable and high-precision clamping and positioning when facing irregularly shaped cosmetic bottles with complex curved transitions and irregular contours (such as oval bottles, conical bottles, curved bottles, etc.).

[0005] In view of the shortcomings of the existing technology, this utility model provides a screen printing positioning device for cosmetic bottles to solve the above problems. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a cosmetic bottle screen printing positioning device, which solves the problem of achieving stable and high-precision clamping and positioning for irregularly shaped cosmetic bottles with complex curved transitions and irregular contours (such as oval bottles, conical bottles, curved bottles, etc.).

[0007] To achieve the above objectives, this utility model provides the following technical solution: a cosmetic bottle screen printing positioning device, a worktable, a support plate mounted on the worktable, and a screen printing machine mounted on the support plate. The device is characterized in that: a positioning rod for positioning the cosmetic bottle is provided directly below the screen printing machine; a reset unit for pushing the cosmetic bottle back to its original position is provided on the surface of the positioning rod; a positioning plate fixedly mounted on the worktable is provided directly below the positioning rod; a conveying unit mounted on the worktable is provided at the insertion port of the positioning rod for conveying the cosmetic bottle; and a pushing unit mounted on the worktable is provided in front of the insertion port of the positioning rod, causing the pushing unit to push the cosmetic bottle to move, thus inserting the positioning rod into the cosmetic bottle.

[0008] Preferably, the reset unit includes:

[0009] The reset plate is slidably connected to the positioning rod.

[0010] A spring is fitted onto the outer surface of the positioning rod and installed between the reset plate and the support plate.

[0011] Preferably, a plurality of ball bearings are movably mounted on the inner side of the positioning plate.

[0012] Preferably, the conveying unit includes:

[0013] Two conveyor wheels are rotatably connected to the worktable;

[0014] The conveyor belt is rotatably connected to the two conveyor wheels;

[0015] A power unit is connected to the conveyor wheel, enabling the power unit to drive the conveyor wheel to rotate.

[0016] Preferably, the power unit includes:

[0017] The motor is fixedly connected to the worktable;

[0018] The first synchronous pulley is fixedly connected to the output shaft of the motor;

[0019] A timing belt is rotatably connected to the first timing pulley;

[0020] The second synchronous pulley is fixedly connected to the shaft of the conveyor pulley and rotatably connected to the synchronous belt.

[0021] Preferably, a plurality of limiting plates are fixedly installed on the surface of the conveyor belt, and two of the limiting plates form a placement groove for placing cosmetic bottles. Limiting blocks are fixedly installed on the worktable on both sides of the conveyor belt. A push-out hole is opened in the center of each limiting block, and the position of the push-out hole is on the same horizontal line as the positioning rod.

[0022] Preferably, the pushing unit includes:

[0023] An electric push rod is fixedly connected to the worktable;

[0024] The push plate is fixedly connected to the telescopic end of the electric push rod.

[0025] Preferably, positioning sensors are installed on the front of both positioning plates. The positioning sensors are used to locate the position of the limiting plates so that the two limiting plates are aligned with the two positioning plates respectively.

[0026] The technical effects and advantages of this utility model are as follows:

[0027] This cosmetic bottle screen printing positioning device uses an electric push rod to move a push plate horizontally towards the cosmetic bottle. As the push plate moves forward, it gently pushes the cosmetic bottle into the clamping area between two positioning plates. Simultaneously, a positioning rod positioned directly above the positioning plates inserts into the cosmetic bottle, with its end pressing against the inner side of the bottle bottom. Under the combined action of the outer pushing force of the push plate and the inner support of the positioning rod, the cosmetic bottle is firmly clamped and precisely positioned, with the left and right sides limited by the positioning plates. This dual positioning mechanism effectively overcomes the problem of offset or swaying caused by the complex curved surface and unstable center of gravity of irregularly shaped bottles, providing a stable and reliable clamping foundation for subsequent high-precision screen printing.

[0028] This cosmetic bottle screen printing positioning device uses a spring-driven push unit to push and compress the reset plate forward, applying a reverse thrust to the cosmetic bottle. With the spring's thrust and the assistance of the ball bearings, the cosmetic bottle smoothly slides out between the positioning plates and accurately falls back between the corresponding two limit plates on the conveyor line, completing the automatic reset. This structure, through a coordinated mechanism of "push-in positioning - spring energy storage - ball bearing guidance - automatic retraction," achieves precise clamping and efficient release of the cosmetic bottle in the screen printing process. It not only ensures printing positioning accuracy but also guarantees the continuity of the cycle time, effectively improving the automation level and production efficiency of the equipment. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0031] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0032] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0033] Figure 4 For the present utility model Figure 1 A magnified structural diagram of point A in the middle.

[0034] In the diagram: 1. Workbench; 101. Support plate; 2. Screen printing machine; 3. Conveying unit; 31. Conveyor belt; 32. Conveyor wheel; 33. Power unit; 331. Motor; 332. First synchronous pulley; 333. Synchronous belt; 334. Second synchronous pulley; 4. Limiting plate; 5. Limiting block; 6. Pushing unit; 61. Electric push rod; 62. Push plate; 7. Positioning plate; 8. Positioning rod; 9. Reset unit; 91. Reset plate; 92. Spring. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] This embodiment discloses a screen printing positioning device for cosmetic bottles, according to the attached... Figure 1 To be continued Figure 4 As shown, it includes a workbench 1, a support plate 101 fixedly installed on the top of the workbench 1, and a screen printing machine 2 for screen printing on cosmetic bottles installed on the support plate 101.

[0037] A positioning rod 8 is fixedly installed on the side of the support plate 101 directly below the screen printing machine 2. The positioning rod 8 is used to insert into the inside of the cosmetic bottle. A buffer pad is fixedly installed at the insertion end of the positioning rod 8 to prevent the positioning rod 8 from damaging the cosmetic bottle. The buffer pad is made of soft material, which can be rubber. Two positioning plates 7 are set directly below the positioning rod 8. The two positioning plates 7 are used to assist the positioning rod 8 in positioning the cosmetic bottle. Several equally spaced ball bearings are movably installed on the inner side of each positioning plate 7. The surface of the ball bearings is covered with a rubber pad to reduce scratches on the cosmetic bottle.

[0038] A reset unit 9 is provided on the surface of the positioning rod 8, so that the reset unit 9 pushes the cosmetic bottle to reset. The reset unit 9 consists of a reset plate 91 and a spring 92. The reset plate 91 is slidably installed on the surface of the positioning rod 8, and the spring 92 is fixedly installed on the inner side of the reset plate 91, so that the spring 92 is sleeved on the outer periphery of the positioning rod 8. The other end of the spring 92 is fixedly installed on the side wall of the support plate 101.

[0039] A conveying unit 3 for conveying cosmetic bottles is provided directly in front of the insertion end of the positioning rod 8. The conveying unit 3 consists of a conveyor belt 31, two conveyor wheels 32, and a power unit 33. The power unit 33 consists of a motor 331, a first synchronous wheel 332, a synchronous belt 333, and a second synchronous wheel 334. The conveyor wheels 32 are rotatably mounted on both sides of the workbench 1. The conveyor belt 31 is rotatably mounted on the surface of the two conveyor wheels 32. Several equally spaced limiting plates 4 are fixedly mounted on the top of the conveyor belt 31. A placement groove is formed between the two limiting plates 4 for placing cosmetic bottles. The second synchronous wheel 334 is fixedly mounted on the shaft of the conveyor wheel 32. The surface of the second synchronous wheel 334 is rotatably connected to the synchronous belt 333. The first synchronous wheel 332 is rotatably mounted on the other side of the synchronous belt 333. The first synchronous wheel 332 is drivenly connected to the motor 331, and the motor 331 is fixedly mounted on the workbench 1.

[0040] Limiting blocks 5 are fixedly installed on the workbench 1 on both sides of the conveyor belt 31, so that the limiting blocks 5 are restricted to the cosmetic bottles in the placement groove. Then, a push hole is opened in the center of the limiting block 5. The position of the push hole is on the same horizontal line as the positioning rod 8. A pushing unit 6 is provided in front of the insertion end of the positioning rod 8. The pushing unit 6 consists of an electric push rod 61 and a push plate 62. The electric push rod 61 is fixedly installed on the workbench 1. The extension end of the electric push rod 61 is fixedly installed on the push plate 62, and the push plate 62 is made of rubber material. At the same time, the push hole provides space for the push plate 62 to pass through.

[0041] A pressure sensor is installed at the center of the push plate 62 to monitor the pressure of the electric push rod 61 pushing the push plate 62 on the cosmetic bottle in real time. When the pressure on the cosmetic bottle exceeds the preset threshold, the electric push rod stops running.

[0042] Positioning sensors are fixedly installed on the front of the two positioning plates 7, so that the positioning sensors can detect the position of the two limit plates 4 and align the two limit plates 4 with the two positioning plates 7. The positioning sensors are connected to the controller fixedly installed on the workbench 1. The controller is connected to the motor 331, the electric push rod 61, the screen printing machine 2 and the pressure sensor respectively, so that the controller coordinates the operation of the motor 331, the electric push rod 61 and the screen printing machine 2.

[0043] Example 1: This example uses a cosmetic bottle for positioning, combined with the attached... Figure 1Detailed Workflow: The workflow is as follows: The controller starts the motor 331, driving its output shaft to rotate the first synchronous pulley 332; the first synchronous pulley 332 transmits power to the second synchronous pulley 334 via the synchronous belt 333, thereby driving the conveyor wheel 32 to rotate synchronously. The rotation of the conveyor wheel 32 further drives the conveyor belt 31 to operate continuously, and the limiting plate 4 installed on the conveyor belt 31 moves accordingly, driving the cosmetic bottles carried on it to be conveyed forward together;

[0044] When both positioning sensors simultaneously detect that the corresponding limit plate 4 has reached the preset position, the system determines that the cosmetic bottle has entered the precise alignment area and then issues a command to stop the motor 331, bringing the conveyor belt 31 and the limit plate 4 to a stop. At this time, the two limit plates 4 are spatially aligned with the two positioning plates 7 fixed on the equipment, completing the initial positioning.

[0045] Subsequently, the controller activates the electric push rod 61, which pushes the push plate 62 to move horizontally towards the cosmetic bottle. As the push plate 62 moves forward, it gently pushes the cosmetic bottle into the clamping area between the two positioning plates 7. At the same time, the positioning rod 8, which is located directly above the positioning plate 7, is inserted into the cosmetic bottle and its end presses against the inside of the bottle bottom.

[0046] Under the combined action of the outer pushing force of the push plate 62 and the inner support of the positioning rod 8, the cosmetic bottle is firmly clamped and precisely positioned, with the left and right sides limited by the positioning plate 7. This dual positioning mechanism effectively overcomes the problem of offset or shaking caused by the complex curved surface and unstable center of gravity of the irregular bottle, providing a stable and reliable clamping foundation for subsequent high-precision screen printing.

[0047] Example 2: This example uses the repositioning of a cosmetic bottle as an example, combined with the attached... Figure 1 Detailed Workflow: The workflow is as follows: Activating the electric push rod 61 moves the push plate 62 forward, smoothly pushing the delivered cosmetic bottle into the clamping area between the two positioning plates 7. During this process, the positioning rod 8 simultaneously inserts into the cosmetic bottle and presses against the bottom, achieving internal positioning. At the same time, the front end of the cosmetic bottle contacts and pushes the reset plate 91, compressing the rear spring 92 and storing elastic potential energy for subsequent reset actions.

[0048] After the screen printing machine 2 completes the printing operation on the surface of the cosmetic bottle, the controller issues a command to retract the electric push rod 61, which drives the push plate 62 to move backward, releasing the lateral pressure on the cosmetic bottle. At this time, the compressed spring 92 releases its energy, pushing the reset plate 91 to spring forward and apply a reverse thrust to the cosmetic bottle;

[0049] In addition, multiple balls or rollers are provided on the inner surfaces of the two positioning plates 7, which significantly reduces the frictional resistance when in contact with the bottle body. With the push of the spring 92 and the assistance of the balls, the cosmetic bottle smoothly slides out from between the positioning plates 7 and accurately falls back between the two corresponding limit plates 4 on the conveyor line, completing the automatic reset;

[0050] This structure achieves precise clamping and efficient release of cosmetic bottles in the screen printing process through a coordinated mechanism of "push-in positioning - spring energy storage - ball bearing guidance - automatic retraction". It not only ensures the printing positioning accuracy, but also ensures the continuity of the cycle, effectively improving the automation level and production efficiency of the equipment.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A screen printing positioning device for cosmetic bottles, comprising a worktable (1), a support plate (101) mounted on the worktable (1), and a screen printing machine (2) mounted on the support plate (101), characterized in that: A positioning rod (8) for positioning cosmetic bottles is provided directly below the screen printing machine (2). A reset unit (9) for pushing cosmetic bottles to reset is provided on the surface of the positioning rod (8). A positioning plate (7) fixedly installed on the worktable (1) is provided directly below the positioning rod (8). A conveying unit (3) installed on the worktable (1) is provided at the insertion port of the positioning rod (8). The conveying unit (3) is used to convey cosmetic bottles. A pushing unit (6) installed on the worktable (1) is provided in front of the insertion port of the positioning rod (8). The pushing unit (6) pushes the cosmetic bottle to move, so that the positioning rod (8) is inserted into the cosmetic bottle.

2. The cosmetic bottle screen printing positioning device according to claim 1, characterized in that, The reset unit (9) includes: The reset plate (91) is slidably connected to the positioning rod (8); A spring (92) is fitted on the outer surface of the positioning rod (8) and installed between the reset plate (91) and the support plate (101).

3. The cosmetic bottle screen printing positioning device according to claim 1, characterized in that, Several ball bearings are movably installed on the inner side of the positioning plate (7).

4. The cosmetic bottle screen printing positioning device according to claim 1, characterized in that, The conveying unit (3) includes: Two conveyor wheels (32) are rotatably connected to the worktable (1); The conveyor belt (31) is rotatably connected to the two conveyor wheels (32); The power unit (33) is connected to the conveyor wheel (32) so that the power unit (33) drives the conveyor wheel (32) to rotate.

5. A screen printing positioning device for cosmetic bottles according to claim 4, characterized in that, The power unit (33) includes: The motor (331) is fixedly connected to the worktable (1); The first synchronous pulley (332) is fixedly connected to the output shaft of the motor (331); The timing belt (333) is rotatably connected to the first timing pulley (332); The second synchronous pulley (334) is fixedly connected to the shaft of the conveyor pulley (32) and rotatably connected to the synchronous belt (333).

6. The cosmetic bottle screen printing positioning device according to claim 4, characterized in that, Several limiting plates (4) are fixedly installed on the surface of the conveyor belt (31). Two of the limiting plates (4) form a placement groove for placing cosmetic bottles. Both sides of the conveyor belt (31) are provided with limiting blocks (5) fixedly installed on the workbench (1). The center of the limiting block (5) is provided with a push hole, and the position of the push hole is on the same horizontal line as the positioning rod (8).

7. The cosmetic bottle screen printing positioning device according to claim 1, characterized in that, The pushing unit (6) includes: An electric push rod (61) is fixedly connected to the worktable (1); The push plate (62) is fixedly connected to the telescopic end of the electric push rod (61).

8. The cosmetic bottle screen printing positioning device according to claim 1, characterized in that, Positioning sensors are installed on the front of both positioning plates (7). The positioning sensors are used to position the limiting plates (4) so ​​that the two limiting plates (4) are aligned with the two positioning plates (7).

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