Intelligent laser cutting system for medicinal glass bottle

Abstract

The invention discloses a medicinal glass bottle laser intelligent cutting system which comprises a machine table, a rotating disc unit, a positioning thickness measuring unit and a laser cutting unit, the rotating disc unit is arranged in the middle of the upper end face of the machine table, and the positioning thickness measuring unit is vertically installed on the side, located on the rotating disc unit, of the machine table; the positioning thickness measuring unit vertically positions the glass bottle on the turntable unit, so that the glass bottle and the turntable unit are concentrically arranged; the laser cutting unit is horizontally mounted on the other side of the turntable unit on the machine table; according to the wall-breaking cutting device, wall-breaking cutting can be conducted on the thick-wall medicinal glass bottle in the laser cutting process of the thick-wall medicinal glass bottle, so that the side wall of the thick-wall medicinal glass bottle reaches the expected thickness, and then cutting separation is conducted through the main laser cutter along the wall-breaking track.

Description

Technical Field

[0001] The invention belongs to the technical field of laser cutting, and in particular is a laser intelligent cutting system for medicinal glass bottles. Background Art

[0002] Pharmaceutical glass bottles are usually made of high-quality borosilicate glass (such as neutral glass), which has high chemical stability, thermal stability and compressive strength. Traditional methods for cutting pharmaceutical glass bottles mainly include mechanical cutting and flame cutting, but they are prone to microcracks and debris, affecting product quality. Laser cutting has fast speed, concentrated heat, and a very small heat-affected zone, which reduces the risk of cracks and deformation and ensures smooth and neat cutting edges of pharmaceutical glass bottles.

[0003] However, most laser cutting systems in the prior art have difficulty in effectively regulating the laser energy density and focusing accuracy in the cutting of thick-walled pharmaceutical glass bottles, which easily causes the glass to be completely penetrated during cutting or causes excessive melting, evaporation, etc., forming irregular cutting edges. Therefore, it is necessary to provide a laser intelligent cutting system for pharmaceutical glass bottles to solve the problems raised in the above background technology. Summary of the invention

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a laser intelligent cutting system for medicinal glass bottles, comprising a machine platform, a turntable unit, a positioning thickness measuring unit and a laser cutting unit, wherein the turntable unit is arranged in the middle of the upper end surface of the machine platform, and the positioning thickness measuring unit is vertically installed on one side of the turntable unit on the machine platform, and the positioning thickness measuring unit vertically positions the glass bottle on the turntable unit so that the glass bottle and the turntable unit are arranged concentrically; the laser cutting unit is horizontally installed on the other side of the turntable unit on the machine platform.

[0005] Further, as a preference, the turntable unit comprises a rotatably arranged carrier plate, a fixed plate is arranged parallel to the upper end surface of the carrier plate, a plurality of spring telescopic rods are vertically connected between the fixed plate and the carrier plate, and an electric lifting column is vertically arranged in the middle of the carrier plate;

[0006] A backing plate is fixed to the upper end surface of the fixed disk.

[0007] Further, preferably, the laser cutting unit comprises:

[0008] A three-axis frame, an X-axis frame is slidably mounted on the upper end surface thereof, and a movable plate is slidably mounted on the X-axis frame;

[0009] A truss is fixed on the movable plate, and a main laser cutter is horizontally mounted on one side of the truss;

[0010] An adjusting column is slidably connected to the truss, and a side frame is rotatably mounted on the adjusting column;

[0011] The mainboard is symmetrically mounted on the side frame, the mainboard is fixed to the side frame, and a rotating plate is rotatably connected to the mainboard;

[0012] A connecting plate, bolted to each of the rotating plates;

[0013] The auxiliary laser cutting head is fixed in parallel on each of the connecting plates.

[0014] Further, as a preference, the laser cutting lines of the two auxiliary laser cutting heads intersect with each other, and the angle formed by them ranges from 40° to 70°;

[0015] A first propulsion cylinder is fixed on the truss, and one end of the first propulsion cylinder is connected to the adjustment column.

[0016] Further, as a preference, an L-shaped baffle is fixed on one side of the main board, a liner is slidably connected between the L-shaped baffle and the main board, and the cross section of the liner is a U-shaped structure;

[0017] A shaft pin is fixed at one end of the rotating plate, and the shaft pin is slidably connected in the notch of the shifting bushing. A bidirectional screw is vertically rotatably connected between the main plates, and each of the shifting bushings is threadedly connected to the bidirectional screw.

[0018] A transmission tooth is fixed on the bidirectional screw, and a driving part is arranged on the side frame. The driving part is connected with the transmission tooth for transmission through gear meshing.

[0019] Further, preferably, the positioning thickness measuring unit comprises:

[0020] A base plate is fixed to the external frame, two guide rails are arranged in parallel on the base plate, and a gear plate is slidably mounted on the guide rails;

[0021] A central gear seat is rotatably mounted on the middle of the base plate, and both of the two gear plates are meshed with the central gear seat;

[0022] A lifting rod frame is vertically fixed on each of the gear plates, and a positioning plate is fixed at the lower end of each of the lifting rod frames;

[0023] A clamping plate is vertically fixed on one end surface of the positioning plate, and two clamping units are symmetrically distributed on one end surface of the clamping plate;

[0024] An ultrasonic thickness gauge is mounted on the clamping plate.

[0025] Further, as a preference, the clamping unit is composed of two symmetrically arranged clamping arms, both of which are rotatably connected to the clamping plate, and one end of the clamping arm is rotatably mounted with a vertically arranged roller;

[0026] A limit spring is horizontally connected between the clamping arms.

[0027] Further, as a preference, a telescopic guide rod is horizontally fixed on each of the clamping plates, the sound-generating part of the ultrasonic thickness gauge is fixed on the telescopic guide rod, a second propulsion cylinder is installed on the clamping plate, and one end of the second propulsion cylinder is connected to the telescopic guide rod.

[0028] Furthermore, preferably, a control system is provided in the machine, and the control system adjusts the laser cutting scheme based on the glass bottle thickness measurement data obtained by the laser cutting unit.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The laser cutting unit provided in the present invention adopts two auxiliary laser cutting heads and one main laser cutter. The laser lines of the two auxiliary laser cutting heads can intersect with each other. Therefore, in the laser cutting of thick-walled medicinal glass bottles, the two auxiliary laser cutting heads perform wall-breaking cutting on the thick-walled medicinal glass bottles, so that the side walls of the thick-walled medicinal glass bottles reach the expected thickness, and then the main laser cutter performs cutting and separation along the wall-breaking trajectory. On the one hand, it can shorten the overall laser cutting time and improve the cutting efficiency. On the other hand, it can adjust the cutting plan according to the specific thickness of the thick-walled medicinal glass bottles, improve the cutting flexibility, so as to adapt to a variety of medicinal glass bottles with different thicknesses; in particular, the cutting process is divided into wall-breaking cutting and cutting truncation, which avoids excessive heat concentration on the surface of the glass bottle in a short period of time, reduces local overheating, and effectively reduces the heat affected zone. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 A top view of the laser cutting unit of the present invention;

[0033] Figure 3 It is a schematic diagram of the structure of two auxiliary laser cutting heads in the present invention;

[0034] Figure 4 It is a schematic diagram of the cross-sectional structure of the dial liner in the present invention;

[0035] Figure 5 It is a structural schematic diagram of the positioning thickness measuring unit in the present invention;

[0036] Figure 6 A top view of a positioning thickness measuring unit in the present invention;

[0037] Figure 7 It is a schematic diagram of thick-wall cutting of a glass bottle for Chinese medicine of the present invention;

[0038] In the figure: 1, machine table; 11, carrier plate; 12, spring telescopic rod; 13, pad; 19,; 2, positioning thickness measuring unit; 21, base plate; 22, gear plate; 23, center gear seat; 24, lifting rod frame; 25, positioning plate; 3, laser cutting unit; 31, three-axis frame; 32, X-axis frame; 33, movable plate; 34, truss; 35, main laser cutter; 36, adjustment column; 37, first propulsion cylinder; 4, side frame; 41, main board; 42, rotating plate; 43, connecting plate; 44, auxiliary laser cutting head; 45, L-shaped baffle; 46, bushing; 47, shaft pin; 48, transmission gear; 49, bidirectional screw; 5, clamping plate; 51, ultrasonic thickness gauge; 52, clamping arm; 53, roller; 54, limit spring; 55, second propulsion cylinder. DETAILED DESCRIPTION

[0039] See also Figure 1-Figure 7 In an embodiment of the present invention, a pharmaceutical glass bottle laser intelligent cutting system includes a machine table 1, a turntable unit, a positioning thickness measuring unit 2 and a laser cutting unit 3. The turntable unit is arranged in the middle of the upper end surface of the machine table 1, and the positioning thickness measuring unit 2 is vertically installed on one side of the turntable unit on the machine table. The positioning thickness measuring unit 2 vertically positions the glass bottle on the turntable unit so that the glass bottle and the turntable unit are arranged concentrically, so that the turntable unit provides a rotational driving force for the pharmaceutical glass bottle during the laser cutting process; the laser cutting unit 3 is horizontally installed on the other side of the turntable unit on the machine table 1, and the laser cutting unit 3 can cut and separate the pharmaceutical glass bottle in a rotating state as a whole.

[0040] In this embodiment, the turntable unit includes a rotatably arranged carrier plate 11, a fixed plate is arranged parallel to the upper end surface of the carrier plate 11, a plurality of spring telescopic rods 12 are vertically connected between the fixed plate and the carrier plate 11, and an electric lifting column is vertically arranged in the middle of the carrier plate 11, and the electric lifting column can make the fixed plate abut against the medicinal glass bottle placed in the positioning thickness measuring unit 2 during the lifting drive;

[0041] A pad 13 is fixed to the upper end surface of the fixed plate. The pad 13 has a high elastic deformation capacity and can fully contact the bottom of the medicinal glass bottle. Therefore, when the carrier plate 11 rotates, the pad 13 can generate static friction with the medicinal glass bottle and drive the medicinal glass bottle to rotate synchronously.

[0042] As a preferred embodiment, the laser cutting unit 3 includes:

[0043] A three-axis frame 31, on the upper end surface of which an X-axis frame 32 is slidably mounted, and a movable plate 33 is slidably mounted on the X-axis frame 32;

[0044] A truss 34 is fixed on the movable plate 33, and a main laser cutter 35 is horizontally mounted on one side of the truss 34; when the X-axis frame 32 is slidably adjusted along the horizontal direction of the three-axis frame 31, the horizontal distance between the main laser cutter 35 and the medicinal glass bottle can be effectively adjusted;

[0045] An adjusting column 36 is slidably connected to the truss 34, and a side frame 4 is rotatably mounted on the adjusting column 36;

[0046] The main board 41 is symmetrically mounted on the side frame 4, and the main board 41 is fixed to the side frame 4. A rotating plate 42 is rotatably connected to the main board 41.

[0047] A connecting plate 43, fixed by bolts on each of the rotating plates 42;

[0048] The auxiliary laser cutting head 44 is fixed in parallel on each of the connecting plates 43; wherein, the auxiliary laser cutting head 44 can be perpendicular to the side wall of the medicinal glass bottle during the rotation adjustment of the side frame 4. At this time, by sliding the X-axis frame 32 and the movable plate 33 on the X-axis frame 32, the effective distance between the auxiliary laser cutting head 44 and the medicinal glass bottle can be effectively adjusted.

[0049] In this embodiment, the laser cutting lines of the two auxiliary laser cutting heads 44 intersect with each other, and the angle range of the angle formed by them is 40° to 70°; so that the two auxiliary laser cutting heads 44 work simultaneously in the cutting of thick-walled medicinal glass bottles, and at this time, an annular cutting groove can be formed on the surface of the medicinal glass bottle during rotation, and the cutting waste in the annular cutting groove is discharged and then the glass bottle is completely cut by the main laser cutter 35, thereby realizing the rapid laser cutting operation of the thick-walled medicinal glass bottle; when the cutting waste is discharged, the two auxiliary laser cutting heads 44 can be driven to deflect inward, and after the glass bottle is rotated to different angles, the laser cutting line emitted by the laser cutting head 44 can perform multi-point cutoff on the waste;

[0050] For medicinal glass bottles made of different specifications, excessive heat concentration can be effectively avoided and local overheating can be reduced by adjusting the intersection angle of the laser cutting lines of the auxiliary laser cutting head 44;

[0051] A first propulsion cylinder 37 is fixed on the truss 34 , and one end of the first propulsion cylinder 37 is connected to the adjustment column 36 .

[0052] In this embodiment, an L-shaped baffle 45 is fixed to one side of the main board 41, and a shifting bushing 46 is slidably connected between the L-shaped baffle 45 and the main board 41, and the cross section of the shifting bushing 46 is a U-shaped structure;

[0053] A shaft pin 47 is fixed to one end of the rotating plate 42, and the shaft pin 47 is slidably connected to the notch of the shifting bushing 46. A bidirectional screw 49 is vertically rotatably connected between the main plates 41, and each of the shifting bushings 46 is threadedly connected to the bidirectional screw 49, so that in the forward and reverse rotation adjustment of the bidirectional screw 49, the two shifting bushings 46 above and below can slide up and down along the bidirectional screw 49, and at this time, the rotating plate 42 can be rotated and adjusted by the shifting action of the shifting bushing 46 on the shaft pin 47;

[0054] A transmission tooth 48 is fixed on the bidirectional screw 49 , and a driving part (not shown in the figure) is provided on the side frame 4 , and the driving part is connected with the transmission tooth 48 for transmission through gear meshing.

[0055] In this embodiment, the positioning thickness measuring unit 2 includes:

[0056] A base plate 21 is fixed to the external frame, and two guide rails are arranged in parallel on the base plate 21, and a gear plate 22 is slidably mounted on the guide rails;

[0057] A central gear seat 23 is rotatably mounted in the middle of the base plate 21, and the two gear plates 22 are meshed with the central gear seat 23;

[0058] A lifting rod frame 24 is vertically fixed on each of the gear plates 22, and a positioning plate 25 is fixed at the lower end of each of the lifting rod frames 24;

[0059] The clamping plate 5 is vertically fixed on one side end surface of the positioning plate 25, and two clamping units are symmetrically distributed on one side end surface of the clamping plate 5, and the two clamping units can clamp the upper and lower parts of the cut surface of the glass bottle respectively, so that when the medicinal glass bottle is completely laser cut, the two clamping units at the upper and lower parts can stably clamp the cut and truncated parts respectively;

[0060] The ultrasonic thickness gauge 51 is mounted on the clamping plate 5. The ultrasonic probe is placed on the outer surface of the glass bottle. The ultrasonic wave is reflected back by the wall of the glass bottle, and the thickness is calculated based on the measured reflection time.

[0061] As a preferred embodiment, the clamping unit is composed of two symmetrically arranged clamping arms 52, both of which are rotatably connected to the clamping plate 5, and one end of the clamping arm 52 is rotatably mounted with a vertically arranged roller 53, and the roller 53 can roll and contact the outer surface of the medicinal glass bottle;

[0062] A limit spring 54 is horizontally connected between the clamping arms 52, wherein when the center gear seat 23 drives the two gear plates 22 to slide synchronously, the clamping plate 5 on the gear plate 22 can gradually clamp the medicinal glass bottle from both sides through the clamping unit, and the clamping arms 52 in the clamping unit are gradually separated, and the limit spring 54 is gradually compressed; therefore, when the fixed plate in the turntable unit is pushed upward by the electric lifting column, the pad 13 is fully in contact with the bottom of the medicinal glass bottle, and can drive the medicinal glass bottle to rotate during the rotation of the carrier plate 11.

[0063] In this embodiment, a telescopic guide rod is horizontally fixed on each of the clamping plates 5, the sound-generating part of the ultrasonic thickness gauge 51 is fixed on the telescopic guide rod, and a second propulsion cylinder 55 is installed on the clamping plate 5, and one end of the second propulsion cylinder 55 is connected to the telescopic guide rod.

[0064] In this embodiment, a control system is provided in the machine 1, and the control system adjusts the laser cutting scheme based on the glass bottle thickness measurement data obtained by the laser cutting unit 2. That is to say, for thick-walled medicinal glass bottles of different thicknesses, the cutting depth during wall breaking cutting and cutting truncation can be adjusted according to the specifications of the glass bottles to improve the cutting efficiency; and for thin-walled medicinal glass bottles, the main laser cutter 35 can be directly used for laser cutting operations.

[0065] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A laser intelligent cutting system for medicinal glass bottles, comprising a machine platform (1), a turntable unit, a positioning thickness measuring unit (2) and a laser cutting unit (3), characterized in that: A turntable unit is arranged in the middle of the upper end surface of the machine platform (1), and a positioning thickness measuring unit (2) is vertically installed on one side of the turntable unit on the machine platform, wherein the positioning thickness measuring unit (2) vertically positions the glass bottle on the turntable unit so that the glass bottle and the turntable unit are arranged concentrically; and a laser cutting unit (3) is horizontally installed on the other side of the turntable unit on the machine platform (1).

2. According to claim 1, a laser intelligent cutting system for medicinal glass bottles is characterized by: The turntable unit comprises a rotatably arranged carrier plate (11), a fixed plate being arranged parallel to the upper end surface of the carrier plate (11), a plurality of spring telescopic rods (12) being vertically connected between the fixed plate and the carrier plate (11), and an electric lifting column being vertically arranged in the middle of the carrier plate (11); A backing plate (13) is fixed to the upper end surface of the fixed disk.

3. The medical glass bottle laser intelligent cutting system according to claim 1 is characterized by: The laser cutting unit (3) comprises: A three-axis frame (31) has an X-axis frame (32) slidably mounted on its upper end surface, and a movable plate (33) is slidably mounted on the X-axis frame (32); A truss (34) is fixed on the movable plate (33), and a main laser cutter (35) is horizontally mounted on one side of the truss (34); An adjustment column (36) slidably connected to the truss (34), and a side frame (4) is rotatably mounted on the adjustment column (36); A main board (41) is symmetrically mounted on the side frame (4) in an upper and lower manner, the main board (41) is fixed to the side frame (4), and a rotating plate (42) is rotatably connected to the main board (41); A connecting plate (43) fixed to each of the rotating plates (42) by bolts; The auxiliary laser cutting head (44) is fixed in parallel on each of the connecting plates (43).

4. The medical glass bottle laser intelligent cutting system according to claim 3 is characterized by: The laser cutting lines of the two auxiliary laser cutting heads (44) intersect with each other, and the angle formed by them ranges from 40° to 70°; A first propulsion cylinder (37) is fixed on the truss (34), and one end of the first propulsion cylinder (37) is connected to the adjustment column (36).

5. The medical glass bottle laser intelligent cutting system according to claim 3 is characterized by: An L-shaped baffle (45) is fixed on one side of the main board (41), a shifting bush (46) is slidably connected between the L-shaped baffle (45) and the main board (41), and the cross section of the shifting bush (46) is a U-shaped structure; A shaft pin (47) is fixed at one end of the rotating plate (42), and the shaft pin (47) is slidably connected in a notch of a shift bushing (46). A bidirectional screw (49) is vertically rotatably connected between the main plates (41), and each of the shift bushings (46) is threadedly connected to the bidirectional screw (49); A transmission tooth (48) is fixed on the bidirectional screw (49), and a driving part is provided on the side frame (4), and the driving part is connected to the transmission tooth (48) for transmission through gear meshing.

6. The medical glass bottle laser intelligent cutting system according to claim 1 is characterized by: The positioning thickness measuring unit (2) comprises: A base plate (21) is fixed to the external frame, two guide rails are arranged in parallel on the base plate (21), and a gear plate (22) is slidably mounted on the guide rails; A central gear seat (23) is rotatably mounted on the middle portion of the base plate (21), and the two gear plates (22) are both meshed with the central gear seat (23); A lifting rod frame (24) is vertically fixed on each of the gear plates (22), and a positioning plate (25) is fixed at the lower end of each of the lifting rod frames (24); A clamping plate (5) is vertically fixed to one end surface of the positioning plate (25), and one end surface of the clamping plate (5) has two clamping units symmetrically distributed in an upper and lower manner; An ultrasonic thickness gauge (51) is mounted on the clamping plate (5).

7. The medical glass bottle laser intelligent cutting system according to claim 6 is characterized by: The clamping unit is composed of two symmetrically arranged clamping arms (52), both of which are rotatably connected to the clamping plate (5), and one end of the clamping arm (52) is rotatably mounted with a vertically arranged roller (53); A limit spring (54) is horizontally connected between the clamping arms (52).

8. The medical glass bottle laser intelligent cutting system according to claim 6 is characterized by: A telescopic guide rod is horizontally fixed on each of the clamping plates (5), a sound-generating part of the ultrasonic thickness gauge (51) is fixed on the telescopic guide rod, a second propulsion cylinder (55) is installed on the clamping plate (5), and one end of the second propulsion cylinder (55) is connected to the telescopic guide rod.

9. The medical glass bottle laser intelligent cutting system according to claim 1 is characterized by: A control system is provided in the machine (1), and the control system adjusts the laser cutting scheme based on the glass bottle thickness measurement data acquired by the laser cutting unit (2).

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