Laser marking device for penicillin bottle

Abstract

The utility model provides a laser marking device for penicillin bottles, which comprises a cabinet (1), a laser marking mechanism (2), a movement mechanism (3), a penicillin bottle transmission mechanism (4) and penicillin bottles (5), the movement mechanism (3) and the penicillin bottle transmission mechanism (4) are arranged on the cabinet (1), the laser marking mechanism (2) is arranged on the movement mechanism (3) and is driven by the movement mechanism (3) to move along the Z-axis direction, and the penicillin bottles (5) are arranged on the penicillin bottle transmission mechanism (4). The movement mechanism (3), the penicillin bottle conveying mechanism (4) and the photoelectric sensor (6) are all electrically connected with the PLC (8). According to the utility model, under the condition that the mechanical strength of penicillin bottles with different curvatures is not changed, automatic identification with high reading rate can be realized, and the yield is high. And compared with a traditional marking method, the risks of mark deformation and bottle breaking are avoided, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to a laser marking device for a vial, belonging to the technical field of biomedicine manufacturing and glass medicine bottle packaging. Background Art

[0002] A vial is a small-capacity medicinal glass bottle sealed with a rubber stopper and an aluminum-plastic combination. It is generally used to package vaccines, biological preparations, powder injections, freeze-dried drugs, and other medicines. During the production and sales process, different information needs to be marked on the bottle, such as production information, drug information, and expiration date, so that it can be traced and controlled in production and sales. Currently, labels are mainly written manually or printed with ink. However, these methods have the following problems:

[0003] (1) Direct manual writing may result in missing labels or label errors;

[0004] (2) Information written directly by humans has inconsistent font sizes and styles, making it difficult to identify;

[0005] (3) Manually written information will become blurred or disappear in high temperature, humid environment or over a long period of time;

[0006] (4) Manual writing is inefficient;

[0007] (5) Paper labels can also fall off, and labels are easily affected by the environment and time, resulting in missing and blurred information;

[0008] (6) The printing process of paper labels consumes consumables and introduces other sources of pollution, posing a potential threat to safety.

[0009] Laser marking technology is a highly accurate and pollution-free surface treatment technology. Compared with traditional printing or printing technology, it can not only easily obtain permanent and difficult-to-remove marks, but also add anti-counterfeiting and traceability functions by marking other graphic information, including logos, QR codes, barcodes, batches, dates, etc. At the same time, the characteristic of laser that it can only act on glass at the focus makes it possible to accurately control the position and depth of the marking when it acts on transparent materials, especially glass, to avoid problems such as thermal damage, cracks, and fractures.

[0010] However, glass is a hard and brittle material, and the curvature of vials varies. There is a risk of deformation and bottle breakage during marking. Therefore, it is quite challenging to mark vials with highly readable, stable and consistent labels, especially QR codes. Utility Model Content

[0011] The technical problem to be solved by the utility model is to provide a laser marking device for a vial, which is used in conjunction with a control program to mark on the curved surface of a vial with different curvatures, thereby achieving high-quality label printing while ensuring that the strength of the vial is not affected and there is no risk of the vial breaking, and the label reading rate is high and cannot be removed or changed.

[0012] In order to solve the above problems, the technical solution adopted by the utility model is as follows:

[0013] A laser marking device for a vial includes a cabinet, a laser marking mechanism, a motion mechanism, a vial transmission mechanism, a vial, a photoelectric sensor and a PLC controller.

[0014] The motion mechanism and the vial transport mechanism are installed on the cabinet, the laser marking mechanism is installed on the motion mechanism, and is driven by the motion mechanism to move along the Z-axis direction, the photoelectric sensor is located below the laser marking mechanism, and the photoelectric sensor is directly opposite to the laser marking position, and the vial transport mechanism is used to transport the vial to the bottom of the laser marking mechanism for label printing, and complete the material collection work after marking;

[0015] The motion mechanism, the vial transmission mechanism and the photoelectric sensor are all electrically connected to the PLC controller, and the laser marking mechanism is electrically connected to the photoelectric sensor.

[0016] Furthermore, the laser marking mechanism includes a laser, a beam expander, a beam combiner, a galvanometer, a field lens and a red light indicator. The red light indicator is connected to the laser. The light beam emitted by the laser enters the beam expander. The laser beam after expansion enters the beam combiner. The laser beam after combination enters the galvanometer and the field lens. The laser beam emitted from the field lens is focused on the area indicated by the red light on the surface of the vial.

[0017] Furthermore, the vial conveying mechanism includes a loading bin, a bottle separation mechanism, a vertical-to-horizontal mechanism, a horizontal conveying mechanism, a horizontal-to-vertical mechanism and a vertical receiving bin.

[0018] The bottle separation mechanism is located downstream of the loading bin, and the horizontal conveying mechanism is located below the laser marking mechanism. The bottle separation mechanism and the horizontal conveying mechanism are both driven by a double-output shaft motor, and the double-output shaft motor drives the bottle separation screw and the horizontal conveying mechanism to move synchronously.

[0019] One end of the loading bin is connected to the bottle separating screw, the vertical-to-horizontal mechanism is installed below the bottle separating screw side of the bottle separating mechanism, one end of the vertical-to-horizontal mechanism is connected to the horizontal conveying mechanism, the other end of the horizontal conveying mechanism is connected to one end of the horizontal-to-vertical mechanism, and the other end of the horizontal-to-vertical mechanism is connected to the vertical material receiving bin.

[0020] Furthermore, the loading bin is a flat conveyor chain, which conveys the vials to the thread groove of the bottle separation screw. Driven by the spiral groove, the vials move toward the horizontal conveying mechanism.

[0021] Furthermore, the vertical-to-horizontal mechanism is a vertical-to-horizontal guide block, which is installed below the side of the bottle-dispensing screw and works together with the bottle-dispensing screw to gradually convert the vial from a vertical state to a horizontal state;

[0022] The surface of the vertical-to-horizontal guide block is provided with an arc-shaped inclined surface from top to bottom along the pushing direction of the bottle-distributing screw, and a strip-shaped plane is provided below the arc-shaped inclined surface. The tail ends of the arc-shaped inclined surface and the strip-shaped plane are connected to a transition plane, and the transition plane is connected to a horizontal conveying mechanism. The spiral groove of the bottle-distributing screw, the arc-shaped inclined surface and the strip-shaped plane together form a track for the vials to pass through, so that the vials moving along the track are slowly turned from vertical to horizontal.

[0023] The horizontal-to-vertical mechanism is a horizontal-to-vertical guide block, which includes an arc-shaped inclined plane conversion area smoothly connected to the horizontal conveying channel, a vertical groove and a turning groove, the depth of the vertical groove is greater than the depth of the horizontal conveying channel, and the turning groove is connected to the vertical material receiving bin;

[0024] The vials conveyed by the horizontal conveying mechanism advance to the arc-shaped slope conversion area through the horizontal conveying channel. The state of the vials gradually changes after passing through the arc-shaped slope conversion area, and the state changes to a vertical state when being pushed to the vertical slot.

[0025] Furthermore, the horizontal conveying mechanism includes a roller conveyor belt and two parallel guide rods. The syringe bottle is positioned between the two rollers of the roller conveyor belt. The guide rods are fixed on the baffles on both sides of the conveyor belt. The upper and lower ends of the syringe bottle are restricted between the two guide rods to prevent the bottle body from sliding in the vertical conveying direction during conveyance.

[0026] Furthermore, the material of the vial is high borosilicate, the glass thickness of the vial is in the range of 0.9mm-1mm, and the depth of the mark is 80-160um.

[0027] Furthermore, the motion mechanism can drive the laser marking mechanism to move within a range of 10-200 mm in the z-axis direction, and its minimum adjustable accuracy reaches 80u.

[0028] Furthermore, the laser energy density focused on the marking surface by the laser marking mechanism is 4.7-5.0 J / cm 2 .

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] 1. The utility model cooperates with the control program to accurately control the Z-axis accuracy to 80u through the motion mechanism, and the depth of the laser marking is 80u-60u, thereby ensuring that the vials with different curvatures can achieve high reading rate marking without changing the mechanical strength.

[0031] 2. The marking method of the utility model has high working efficiency. During the cleaning, high pressure sterilization and depyrogenation process at a temperature of up to 600°C, the mark can remain stable and the risk of particulate contamination can be avoided.

[0032] 3. The utility model is easy to operate, can realize automatic marking with the help of control program, and has high yield rate. Compared with the traditional marking method, it avoids the risk of mark deformation and bottle breakage, and greatly improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0034] Figure 2 This is a schematic diagram of the laser marking mechanism involved in the utility model.

[0035] Figure 3 It is a structural schematic diagram of the vertical-to-horizontal module involved in the utility model.

[0036] Figure 4 The utility model is a schematic structural diagram of the bottle separation screw and the horizontal transmission mechanism involved in the utility model.

[0037] Figure 5 The utility model is a schematic structural diagram of the horizontal-to-vertical module.

[0038] Figure 6 This is a connection principle diagram of the utility model. DETAILED DESCRIPTION

[0039] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the purpose, technical solution and advantages of the utility model will become clearer. It should be noted that the described embodiments are preferred embodiments of the utility model, but not all embodiments.

[0040] Combination Figure 1 As shown, a laser marking device for a vial includes a cabinet 1, a laser marking mechanism 2, a motion mechanism 3, a vial transmission mechanism 4, a vial 5, a photoelectric sensor 6 and a PLC controller 8.

[0041] The vial conveying mechanism 4 is used to convey the vial 5 to the bottom of the laser marking mechanism 2 for label printing and to complete the material collection work after marking;

[0042] The motion mechanism 3 and the vial conveying mechanism 4 are installed on the cabinet 1, and the cabinet 1 is used for support and laser protection. The laser marking mechanism 2 is installed on the motion mechanism 3, and is driven by the motion mechanism 3 to move along the Z-axis direction, so as to accurately adjust the position of the focused laser beam. The motion mechanism 3 can drive the laser marking mechanism 2 to move within the range of 10-200mm in the z-axis direction, and its minimum adjustable accuracy is 80u, and the mark is adjusted on the surface or sub-surface of the glass bottle to ensure high quality and high readability without affecting the strength of vials with different curvatures. The photoelectric sensor 6 is located below the laser marking mechanism 2, and the photoelectric sensor 6 is opposite to the laser marking position, and can be installed on the cabinet 1, or on the guide rod 44b described below. The vial conveying mechanism 4 is used to transfer the vial 5 to the bottom of the laser marking mechanism 2 for label printing, and complete the material collection work after marking. Reference Figure 6 The motion mechanism 3 , the vial transmission mechanism 4 and the photoelectric sensor 6 are all electrically connected to the PLC controller 8 , and the laser marking mechanism 2 is electrically connected to the photoelectric sensor 6 .

[0043] Combination Figure 2 As shown, the laser marking mechanism 2 includes a laser 21, a beam expander 22, a beam combiner 23, a galvanometer 24, a field lens 25 and a red light indicator 26. The red light indicator 26 is connected to the laser 21. The light beam emitted by the laser enters the beam expander 22, the laser beam after beam expansion enters the beam combiner 23, the laser beam after beam combination enters the galvanometer 24 and the field lens 25, and the laser beam emitted from the field lens 25 is focused on the area indicated by the red light on the surface of the vial. Among them, the laser wavelength emitted by the laser 21 is 355nm, the laser power is greater than 5W, the frequency is 20KHz-100KHz, and the pulse width is about 15ns. The beam expander 22 adopts an electric variable magnification beam expander with a continuously adjustable magnification of 2-5X. According to d=2fλ / D, it can cooperate with the field lens to adjust the laser power density at the focus and improve the focal depth of the system.

[0044] Continue to refer Figure 1 The vial conveying mechanism 4 includes a loading bin 41, a bottle separation screw 42, a vertical-to-horizontal mechanism 43, a horizontal conveying mechanism 44, a horizontal-to-vertical mechanism 45 and a vertical receiving bin 46. The bottle separation screw 42 is located downstream of the loading bin 41, and the horizontal conveying mechanism 44 is located below the laser marking mechanism 2.

[0045] refer to Figure 4The bottle separation mechanism is located below the upper bin 41, and the horizontal conveying mechanism 44 is located below the laser marking mechanism 2. The bottle separation mechanism and the horizontal conveying mechanism 44 are both driven by a double-output shaft motor 48. The double-output shaft motor 48 drives the bottle separation screw 42 and the horizontal conveying mechanism 44 to move synchronously through belt drive or chain drive and other common transmission methods in the prior art. One end of the upper bin 41 is connected to the bottle separation screw 42. The upper bin 41 is a flat conveyor chain. The flat conveyor chain conveys the vials 5 to the thread groove of the bottle separation screw. Under the push of the spiral groove, the vials 5 move toward the horizontal conveying mechanism 44. The vertical rotation mechanism 43 is installed at the lower side of the bottle separation screw 42. As the bottle separation screw rotates, the vials enter the vertical rotation mechanism. One end of the vertical-to-horizontal mechanism 43 is connected to the horizontal conveying mechanism 44 , the other end of the horizontal conveying mechanism 44 is connected to one end of the horizontal-to-vertical mechanism 45 , and the other end of the horizontal-to-vertical mechanism 45 is connected to the vertical material receiving bin 46 .

[0046] The horizontal conveying mechanism 44 includes a roller conveyor belt 44a and two parallel guide rods 44b, and the vial 5 is positioned between the two rollers of the roller conveyor belt 44a. Figure 1 The guide rods 44b are fixed on the guard plates 44c on both sides of the conveyor belt, and the upper and lower ends of the vials are restricted between the two guide rods 44b to prevent the bottles from sliding in the vertical conveying direction during conveying.

[0047] Combination Figure 3 As shown, the vertical-to-horizontal mechanism 43 is a vertical-to-horizontal guide block, which is installed at the lower side of the bottle-distributing screw to gradually convert the vial 5 on the bottle-distributing screw 42 from a vertical state to a horizontal state. The surface of the vertical-to-horizontal guide block is provided with an arc-shaped inclined surface 43a from top to bottom along the pushing direction of the bottle-distributing screw. Below the arc-shaped inclined surface 43a is a strip plane 43b. The tail ends of the arc-shaped inclined surface 43a and the strip plane 43b are connected to a transition plane 43c. The transition plane 43c is connected to the horizontal conveying mechanism 44. The spiral groove of the bottle-distributing screw, the arc-shaped inclined surface and the strip plane 43b together form a track for the vial to pass through, so that the state of the vial moving along the track is slowly converted from vertical to horizontal.

[0048] Combination Figure 5 As shown, the horizontal-to-vertical mechanism 45 is a horizontal-to-vertical guide block, which includes a horizontal conveying channel 45d, an arc-shaped inclined plane conversion area 45a smoothly connected to it, a vertical groove 45b and a turning groove 45c, and the depth of the vertical groove 45b is greater than the depth of the horizontal conveying channel 45d. The vials 5 transmitted by the horizontal conveying mechanism 44 advance to the arc-shaped inclined plane conversion area 45a through the horizontal conveying channel 45d, and the state of the vials gradually changes after passing through the arc-shaped inclined plane conversion area 45a, and the state is converted to a vertical state when being pushed to the vertical groove 45b.

[0049] The material of the vial 5 is high borosilicate, the glass thickness of the vial 5 is in the range of 0.9mm-1mm, and the depth of the mark is 80-160um. It can ensure that the mark can remain stable during cleaning, high pressure sterilization and depyrogenation at a high temperature of 600°C. It can also avoid the risk of introducing particulate contamination and ensure that the strength of the vial is not affected. At the same time, it is guaranteed that the reading rate of the mark is 100%, and the mark after marking cannot be removed or changed.

[0050] The laser energy density focused on the marking surface by the laser marking mechanism 2 is 4.7-5.0 J / cm 2 If the laser energy density is too low, it will not reach the glass abrasion threshold and cannot form a mark; if the laser energy density is too high, it will affect the strength of the vial 5 and there is a risk of breakage.

[0051] The laser marking method of the utility model comprises the following steps:

[0052] S1. According to the size of the vial 5, the laser focal length is adjusted by the motion mechanism 3, and the printing position of the label on the vial is adjusted by the red light preview function of the red light indicator 26;

[0053] S2, manually loading the vials into the flat conveyor chain, the vials are initially in an upright position, the motor of the flat conveyor chain is started, and the vials are transported to the bottle separation screw 42 through the flat conveyor chain;

[0054] S3, the photoelectric sensor 6 under the laser marking mechanism 2 detects whether there is material on the roller conveyor belt. If so, the horizontal transmission line 44 will continue to work; if not, return to step S2 and manually load the material;

[0055] S4, the bottle-distributing screw 42 rotates to push the vial into the vertical-to-horizontal mechanism 43, the vertical-to-horizontal mechanism 43 flips the vial from an upright state to a horizontal state, and the roller conveyor conveys the horizontal vial to the bottom of the laser marking mechanism 2;

[0056] S5, the photoelectric sensor 6 under the laser marking mechanism 2 will determine whether the vial has reached the marking area. If yes, the synchronous belt drive system 47 stops working, and the laser marking mechanism 2 performs marking. After the marking is completed, the synchronous belt drive system 47 restarts and continues to execute step S4; if no, the synchronous belt drive system 47 continues to work;

[0057] S6. The horizontal conveying mechanism 44 conveys the marked vials to the horizontal-to-vertical mechanism 45. The horizontal-to-vertical mechanism 45 converts the lying vials into an upright state and delivers them to the vertical material receiving bin 46.

[0058] The above is only a description of the preferred embodiment of the utility model, and is not a limitation of the protection scope of the utility model. Obviously, any technician familiar with the field can easily think of replacement or change to obtain other embodiments based on the above embodiments, which should all be included in the protection scope of the utility model.

Claims

1. A laser marking device for vials, characterized in that: It comprises a cabinet (1), a laser marking mechanism (2), a motion mechanism (3), a vial transmission mechanism (4), a vial (5), a photoelectric sensor (6) and a PLC controller (8), The motion mechanism (3) and the vial transport mechanism (4) are mounted on the cabinet (1); the laser marking mechanism (2) is mounted on the motion mechanism (3) and is driven by the motion mechanism (3) to move along the Z-axis direction; the photoelectric sensor (6) is located below the laser marking mechanism (2), and the photoelectric sensor (6) is directly opposite to the laser marking position; the vial transport mechanism (4) is used to transport the vial (5) to the bottom of the laser marking mechanism (2) for label printing, and complete the material collection work after marking; The motion mechanism (3), the vial transmission mechanism (4) and the photoelectric sensor (6) are all electrically connected to the PLC controller (8), and the laser marking mechanism (2) is electrically connected to the photoelectric sensor (6).

2. The laser marking device for vials according to claim 1, characterized in that: The laser marking mechanism (2) comprises a laser (21), a beam expander (22), a beam combiner (23), a galvanometer (24), a field lens (25) and a red light indicator (26); the red light indicator (26) is connected to the laser (21); a light beam emitted by the laser enters the beam expander (22); the laser light beam after beam expansion enters the beam combiner (23); the laser light after beam combination enters the galvanometer (24) and the field lens (25); and the laser light beam emitted from the field lens (25) is focused on an area indicated by the red light on the surface of the vial.

3. The laser marking device for vials according to claim 1, characterized in that: The vial conveying mechanism (4) comprises a loading bin (41), a bottle distributing mechanism, a vertical-to-horizontal mechanism (43), a horizontal conveying mechanism (44), a horizontal-to-vertical mechanism (45) and a vertical material receiving bin (46). The bottle separation mechanism is located downstream of the loading bin (41), and the horizontal conveying mechanism (44) is located below the laser marking mechanism (2). The bottle separation mechanism and the horizontal conveying mechanism (44) are both driven by a double-output shaft motor (48). The double-output shaft motor (48) drives the bottle separation screw (42) and the horizontal conveying mechanism (44) to move synchronously. One end of the loading bin (41) is connected to the bottle separation screw (42), the vertical-horizontal mechanism (43) is installed below the bottle separation screw (42) of the bottle separation mechanism, one end of the vertical-horizontal mechanism (43) is connected to the horizontal conveying mechanism (44), the other end of the horizontal conveying mechanism (44) is connected to one end of the horizontal-vertical-vertical mechanism (45), and the other end of the horizontal-vertical-vertical mechanism (45) is connected to the vertical material receiving bin (46).

4. The laser marking device for vials according to claim 3, characterized in that: The loading bin (41) is a flat conveyor chain, which conveys the vials (5) to the thread groove of the bottle separation screw. Under the push of the thread groove, the vials (5) move toward the horizontal conveying mechanism (44).

5. The laser marking device for vials according to claim 3, characterized in that: The vertical-to-horizontal mechanism (43) is a vertical-to-horizontal guide block, which is installed below the side of the bottle-dispensing screw and works together with the bottle-dispensing screw (42) to gradually convert the vial (5) from a vertical state to a horizontal state. The surface of the vertical-rotating-horizontal guide block is provided with an arc-shaped inclined surface (43a) from top to bottom along the pushing direction of the bottle-distributing screw, and a strip-shaped plane (43b) is provided below the arc-shaped inclined surface (43a). The tail ends of the arc-shaped inclined surface (43a) and the strip-shaped plane (43b) are connected to a transition plane (43c), and the transition plane (43c) is connected to a horizontal conveying mechanism (44). The spiral groove of the bottle-distributing screw, the arc-shaped inclined surface and the strip-shaped plane (43b) together form a track for the passage of the vials, so that the state of the vials moving along the track is slowly changed from vertical to horizontal. The horizontal-to-vertical mechanism (45) is a horizontal-to-vertical guide block, which includes a horizontal conveying channel (45d), an arc-shaped inclined plane conversion area (45a) smoothly connected thereto, a vertical groove (45b) and a turning groove (45c), the depth of the vertical groove (45b) being greater than the depth of the horizontal conveying channel (45d), and the turning groove (45c) being connected to a vertical material receiving bin (46); The vials (5) conveyed by the horizontal conveying mechanism (44) advance to the arc-shaped inclined plane conversion zone (45a) through the horizontal conveying channel (45d), and the state of the vials gradually changes after passing through the arc-shaped inclined plane conversion zone (45a), and the state of the vials changes to a vertical state when they are pushed to the vertical groove (45b).

6. The laser marking device for vials according to claim 3, characterized in that: The horizontal conveying mechanism (44) comprises a roller conveyor belt (44a) and two parallel guide rods (44b), the vial (5) is positioned between two rollers of the roller conveyor belt (44a), the guide rod (44b) is fixed on baffles (44c) on both sides of the conveyor belt, and the upper and lower ends of the vial are restricted between the two guide rods (44b) to prevent the bottle from sliding in the vertical conveying direction during the conveying process.

7. The laser marking device for vials according to claim 1, characterized in that: The material of the vial (5) is high borosilicate, the glass thickness of the vial (5) is in the range of 0.9 mm-1 mm, and the depth of the marking is 80-160 um.

8. The laser marking device for vials according to claim 1, characterized in that: The motion mechanism (3) can drive the laser marking mechanism (2) to move within a range of 10-200 mm in the z-axis direction, and its minimum adjustable accuracy reaches 80u.

9. The laser marking device for vials according to claim 1, characterized in that: The laser energy density focused on the marking surface by the laser marking mechanism (2) is 4.7-5.0 J / cm 2 .

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