A device for grinding the surface of the cone head of a prefilled syringe barrel

Abstract

The utility model discloses a device for grinding the surface of a cone head of a prefilled syringe barrel, comprising a workbench, a conveying mechanism is arranged on the workbench, a driving wheel mechanism and a grinding mechanism are correspondingly arranged on both sides along the conveying direction of the conveying mechanism, an installation position is reserved on the workbench, a lifting mechanism passes through the installation position from under the workbench and then cooperates with the conveying mechanism, and is located between the driving wheel mechanism and the grinding mechanism, so that not only can the cone head have a uniform rough surface, but also a smaller diamond grinding wheel is used, which is wear-resistant and dust-reduced, and the grinding mechanism can be adjusted in angle, and the grinding wheel is well fitted with the taper of the cone head of the prefilled syringe barrel, so that the grinding surface is sufficiently uniform, thereby improving the quality of the prefilled syringe.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment preparation devices, in particular to a device for grinding the surface of a cone head of a prefilled syringe barrel. Background Art

[0002] Prefilled syringes are a new type of drug packaging developed in the 1990s. They are mainly used for packaging and storage of high-end drugs and for direct injection or for flushing in ophthalmology, otology, orthopedics and other surgeries. The cone head of the prefilled syringe just out of the mold has a smooth surface and needs to be frosted to give it a uniform and rough surface to facilitate the firm assembly of the subsequent syringe.

[0003] For example, the Chinese utility model patent with publication number CN206839847U and patent name "Grinding head for filled syringes" discloses a grinding head for pre-filled syringes, including a conveying device, a pressure wheel is provided on the upper part of the conveying device, a grinding head is provided on one side of the conveying device, and the grinding head is connected to the grinding head driving device; the conveying device includes conveying wheels arranged crosswise in sequence, and a V-shaped opening is provided on the outer edge of the conveying wheel, which can arbitrarily control the grinding force and grinding time of the pre-filled syringe, thereby improving the grinding accuracy and reducing the scrap rate.

[0004] This method of the prior art generates a lot of dust during processing, which affects the quality of the prefilled syringe. In addition, the sanding angle cannot be adjusted, and the taper of the grinding wheel and the cone of the prefilled syringe barrel cannot fit well, making the sanding surface uneven, which affects the quality of the prefilled syringe. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a device for grinding the surface of the cone head of a prefilled syringe barrel, which not only produces less processing dust but also provides a uniformly rough surface, thereby effectively improving the quality of the prefilled syringe.

[0006] In order to solve the above technical problems, the utility model solves them through the following technical solutions: a device for grinding the surface of a cone head of a prefilled syringe barrel, comprising a workbench, on which a conveying mechanism is arranged, and a driving wheel mechanism and a grinding mechanism are correspondingly arranged on both sides along the conveying direction of the conveying mechanism, and an installation position is reserved on the workbench, and a lifting mechanism passes through the installation position from under the workbench and cooperates with the conveying mechanism, and is located between the driving wheel mechanism and the grinding mechanism.

[0007] In the above technical solution, the conveying mechanism includes a first conveying belt and a second conveying belt arranged in parallel, and a limiting portion is provided on both the first conveying belt and the second conveying belt.

[0008] In the above technical solution, the jacking mechanism includes a jacking seat arranged under the workbench, a transmission connecting rod is arranged on the jacking seat, the cam is driven by a follower arranged on one side of the transmission connecting rod, and a jacking elastic part is connected to the other side of the transmission connecting rod. The lower end of the jacking column is linked with the transmission connecting rod, and the upper end of the jacking column passes through the mounting position from under the workbench and is connected to the jacking components located on both sides of the first conveyor belt.

[0009] In the above technical solution, one end of the lifting elastic member is connected to the transmission connecting rod, and the other end of the lifting elastic member is connected to the lower working surface of the workbench.

[0010] In the above technical solution, the jacking seat includes a first jacking seat and a second jacking seat that are relatively arranged. The jacking column is inserted into the second jacking seat. The upper end of the jacking column is connected to the jacking assembly. The lower end of the jacking column is linked to the transmission connecting rod. The other end of the transmission connecting rod is rotatably connected to the first jacking seat.

[0011] In the above technical solution, the jacking assembly includes a jacking frame and a roller group located on the jacking frame.

[0012] In the above technical solution, the driving wheel mechanism is arranged on the outside of the first conveyor belt, including a driving wheel seat fixed on the workbench, a driving wheel group arranged on the driving wheel seat, and a limiting block located below the driving wheel group and corresponding to the position of the roller group.

[0013] In the above technical solution, the grinding mechanism is arranged outside the second conveyor belt and corresponds to the position of the driving wheel mechanism. The grinding mechanism includes a grinding wheel assembly and a position adjustment assembly and an angle adjustment assembly arranged in cooperation with the grinding wheel assembly.

[0014] In the above technical solution, the position adjustment component includes a guide plate, a guide seat is arranged on the guide plate, the adjustment drive motor is installed through the adjustment motor bracket, and the output shaft of the adjustment drive motor drives the slide on the guide seat through the eccentric wheel to achieve position adjustment.

[0015] In the above technical solution, the angle adjustment component is connected to the outer side of the guide plate and is movably connected to the grinding seat.

[0016] Compared with the prior art, the utility model has the following beneficial effects: a driving wheel mechanism and a grinding mechanism are correspondingly arranged on both sides of the conveying direction of the conveying mechanism, and a lifting mechanism is arranged between the driving wheel mechanism and the grinding mechanism, so that the prefilled syringe barrel can be driven by the driving wheel mechanism under the action of the lifting mechanism, and the prefilled syringe barrel rotates around its own axis with the driving wheel mechanism while the grinding mechanism starts to grind the cone head. This method not only allows the cone head to have a uniform rough surface, but also uses a smaller diamond grinding wheel, which is wear-resistant and reduces dust. At the same time, the grinding mechanism can be adjusted in angle, and the grinding wheel fits well with the taper of the cone head of the prefilled syringe barrel, so that the frosted surface is sufficiently uniform, thereby improving the quality of the prefilled syringe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the explosion structure of the utility model.

[0020] Figure 3 It is a schematic diagram of the lifting mechanism structure.

[0021] Figure 4 Schematic diagram of the structure of the grinding mechanism.

[0022] Figure 5 Schematic diagram of the driving wheel mechanism structure.

[0023] Figure 6 This is a schematic diagram of the structure of a prefilled syringe barrel. DETAILED DESCRIPTION

[0024] The utility model is described in further detail below in conjunction with the accompanying drawings.

[0025] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be used for other implementation schemes, variations, improvements, equivalent schemes, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0026] Those skilled in the art should understand that, in the disclosure of the present invention, the directions or positions indicated by the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, which are only simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limitations on the present invention.

[0027] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0028] See also Figures 1 to 6 A device for grinding the surface of a cone head of a prefilled syringe barrel comprises a workbench 1 on which a conveying mechanism 2 is arranged, and the prefilled syringe barrel 6 is conveyed through the conveying mechanism 2.

[0029] See also Figure 6 The prefilled syringe barrel 6 includes a barrel 61 and a cone head 62. When the prefilled syringe barrel 6 is transferred to the position of the driving wheel mechanism 3 and the grinding mechanism 4 through the conveying mechanism 2, the prefilled syringe barrel 6 is lifted to the working position of the driving wheel mechanism 3 and the grinding mechanism 4 by the lifting mechanism 5, and the cone head 62 is polished. The specific structure is as follows.

[0030] A conveying mechanism 2 is arranged on the workbench 1, including a first conveyor belt 21 and a second conveyor belt 22 arranged in parallel. A limiting portion 20 is arranged on the first conveyor belt 21 and the second conveyor belt 22. The limiting portion 20 is symmetrically arranged on the first conveyor belt 21 and the second conveyor belt 22, and adopts a V-shaped notch to stably limit the prefilled syringe syringe 6 in the V-shaped groove. At the same time, the cone head 62 is located in the direction of the second conveyor belt 22.

[0031] A driving wheel mechanism 3 and a grinding mechanism 4 are correspondingly arranged on both sides of the conveying direction of the conveying mechanism 2. The driving wheel mechanism 3 is used to drive the prefilled syringe barrel 6 to rotate around its own axis, and the grinding mechanism 4 completes the grinding of the cone head 62 while the prefilled syringe barrel 6 rotates. Obviously, the driving wheel mechanism 3 is located on the outside of the first conveyor belt 21, and the grinding mechanism 4 is arranged on the outside of the second conveyor belt 22.

[0032] The driving wheel mechanism 3 includes a driving wheel seat 31, a driving wheel group 32 and a limiting block 33. The driving wheel seat 31 is fixedly set on the workbench 1, the adjusting column 302 is installed on the driving wheel seat 31, the height adjustment block 301 can be adjusted up and down along the height direction of the adjusting column 302, the driving wheel group 32 is set on the height adjustment block 301, the driving wheel group 32 includes a driving wheel 321 and a driving wheel motor 322, and the limiting block 33 is set below the driving wheel 321 through the connecting plate 34. Obviously, the limiting block 33 can also be adjusted through the connecting plate 34 to adapt to the limit position of the prefilled syringe barrel 6.

[0033] The grinding mechanism 4 corresponding to the driving wheel mechanism 3 includes a grinding wheel assembly 41, a position adjustment assembly and an angle adjustment assembly 43. The position adjustment assembly and the angle adjustment assembly 43 are used to adjust the grinding height and grinding angle of the grinding wheel assembly 41. The grinding wheel assembly 41 includes a grinding wheel 411 and a grinding wheel drive motor 412. The grinding wheel adopts a smaller diamond grinding wheel, which is wear-resistant and has less grinding dust. The grinding wheel 411 and the grinding wheel drive motor 412 are installed through a grinding wheel seat 413.

[0034] The position adjustment assembly includes a guide plate 421, a guide seat 422, an adjustment drive motor 423, and an adjustment motor bracket 424. The adjustment drive motor 423 is installed through the adjustment motor bracket 424. The guide seat 422 is set on the guide plate 421. The guide seat 422 is provided with a slide groove. The slide seat 426 is slidably set on the guide seat 422. The grinding wheel seat 413 is connected to the seat 426. The output shaft of the adjustment drive motor 423 drives the slide seat 426 on the guide seat 422 through the eccentric wheel 425 to realize the position adjustment of the grinding wheel assembly 41.

[0035] The angle adjustment component 43 is connected to the outer side of the guide plate 421 and is movably connected to the grinding seat 40 at the same time, that is, the position adjustment component and the angle adjustment component 43 are both suspended through the grinding seat 40. The angle adjustment component 43 is specifically an adjustment plate, which adjusts the installation angle with the grinding seat 40 bracket to achieve the adjustment of the grinding wheel assembly 41.

[0036] When the prefilled syringe barrel 6 in the V-shaped groove is transferred to the position of the driving wheel mechanism 3 and the grinding mechanism 4, it is lifted to the processing position of the grinding mechanism 4 by the lifting mechanism 5, and the cone head 62 is ground.

[0037] An installation position 11 is reserved on the workbench 1, and the lifting mechanism 5 is located below the workbench 1. It can pass through the installation position 11 from below the workbench 1 to cooperate with the first conveyor belt 21 and the second conveyor belt 22, and is located between the driving wheel mechanism 3 and the grinding mechanism 4.

[0038] The lifting mechanism 5 includes a lifting seat arranged below the workbench 1, a transmission connecting rod 52, a cam 53 and a lifting assembly 56. The lifting seat includes a first lifting seat 511 and a second lifting seat 512 arranged opposite to each other. The lifting column 55 is inserted into the second lifting seat 512. The upper end of the lifting column 55 passes through the installation position 11 from the bottom of the workbench 1 and is connected to the lifting assemblies 56 located on both sides of the first conveyor belt 21. The lower end of the lifting column 55 is linked with the transmission connecting rod 52, and the other end of the transmission connecting rod 52 is rotatably connected to the first lifting seat 511. The cam 53 is transmitted through a follower 521 arranged on one side of the transmission connecting rod 52. The other side of the transmission connecting rod 52 is connected to a lifting elastic member 54. One end of the lifting elastic member 54 is connected to the transmission connecting rod 52, and the other end of the lifting elastic member 54 is connected to the lower working surface of the workbench 1. The lifting elastic member 54 is a tension spring.

[0039] The lifting assembly 56 includes a lifting frame 561 and a roller group 562 located on the lifting frame 561. The lifting frame 561 is a vertical part including a horizontal connecting part and vertically extending from the two ends of the horizontal connecting part. The roller groups 562 are respectively arranged at the extended ends of the two vertical parts. During assembly, one of the vertical parts passes through the space between the first conveyor belt 21 and the second conveyor belt 22, and the other vertical part is located on the outside of the first conveyor belt 21, that is, the driving wheel mechanism 3. In other words, the other vertical part is located between the first conveyor belt 21 and the driving wheel mechanism 3.

[0040] The working principle of the above technical solution is as follows: in the initial state, under the elastic force of the lifting elastic member 54, the lifting column 55 lifts the lifting assembly 56 to a position higher than the working surface of the first conveyor belt 21. When the prefilled syringe barrel 6 in the V-shaped groove begins to be conveyed, the cam 53 is driven through the follower 521, so that the transmission connecting rod 52 drives the lifting column 55 connected thereto downward, overcomes the elastic force of the lifting elastic member 54, that is, pulls the lifting elastic member 54 down, so that the lifting assembly 56 is lower than the working surface of the first conveyor belt 21, until the prefilled syringe barrel 6 is conveyed to the position of the driving wheel mechanism 3 and the grinding mechanism 4, the cam 53 returns to its original position, and under the elastic force of the lifting elastic member 54, the lifting column 55 lifts the lifting assembly 56 again to a position higher than the working surface of the first conveyor belt 21. At this time, the prefilled syringe barrel 6 at this position is lifted by the roller group 562 and separated from the V-shaped groove to the working position of the driving wheel mechanism 3 and the grinding mechanism 4. Obviously, in order to To ensure the stability of the prefilled syringe barrel 6 during the lifting process, each pair of roller groups 562 is provided with two, so that the prefilled syringe barrel 6 is just located between the two rollers. At this time, the barrel 61 of the prefilled syringe barrel 6 contacts the driving wheel 321, and the cone head 62 contacts the grinding wheel 411. The driving wheel 321 rotates, driving the prefilled syringe barrel 6 to rotate around its own axis, and the grinding wheel 411 grinds the cone head. At the same time, the grinding angle and fit between the cone head 62 are adjusted by the position adjustment component and the angle adjustment component 43, so that the cone head 62 has a uniform and rough surface. After grinding, the cam 53 is driven again through the follower 521, so that the transmission connecting rod 52 drives the lifting column 55 connected thereto downward, overcomes the elastic force of the lifting elastic member 54 and pulls the lifting elastic member 54 down, and the lifting column 55 resets downward, and the lifting component 56 returns to its position, and the prefilled syringe barrel 6 returns to the V-shaped groove and is transmitted to the next station. This is repeated to achieve automated production.

[0041] Through the above technical scheme, the overall structure has a high degree of integration and is suitable for production lines of different specifications. The grinding wheel adopts a smaller diamond grinding wheel, which is wear-resistant and reduces dust, thereby improving the quality of prefilled syringes. There is no need to frequently change the grinding wheel to increase production. A position adjustment component and an angle adjustment component are added, and the grinding wheel can be adjusted at an angle. The grinding wheel fits well with the taper of the cone head of the prefilled syringe barrel, so that the frosted surface is sufficiently uniform, thereby improving the quality of the prefilled syringes. The problems of the prior art that the frosted structure is large, the grinding wheel is easy to wear, the frosting of the cone head surface is uneven, and the quality and output of the prefilled syringes are low are solved.

[0042] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed or modified in any way.

Claims

1. A device for grinding the surface of a cone head of a prefilled syringe barrel, comprising a workbench (1), characterized in that: The workbench (1) is provided with a conveying mechanism (2), and driving wheel mechanisms (3) and grinding mechanisms (4) are correspondingly provided on both sides along the conveying direction of the conveying mechanism (2). An installation position (11) is reserved on the workbench (1), and a lifting mechanism (5) passes through the installation position from under the workbench (1) and cooperates with the conveying mechanism (2), and is located between the driving wheel mechanism (3) and the grinding mechanism (4).

2. The cone head surface grinding device for a prefilled syringe barrel according to claim 1, characterized in that: The conveying mechanism (2) comprises a first conveying belt (21) and a second conveying belt (22) which are arranged in parallel, and a limiting portion (20) is arranged on both the first conveying belt (21) and the second conveying belt (22).

3. The cone head surface grinding device for a prefilled syringe barrel according to claim 2, characterized in that: The lifting mechanism (5) comprises a lifting seat arranged below the workbench (1), a transmission connecting rod (52) being arranged on the lifting seat, a cam (53) being driven by a follower (521) arranged on one side of the transmission connecting rod (52), a lifting elastic member (54) being connected to the other side of the transmission connecting rod (52), a lower end of a lifting column (55) being linked to the transmission connecting rod (52), and an upper end of the lifting column (55) passing through the mounting position (11) from below the workbench (1) and connected to lifting assemblies (56) located on both sides of the first conveyor belt (21).

4. The cone head surface grinding device for a prefilled syringe barrel according to claim 3, characterized in that: One end of the lifting elastic member (54) is connected to the transmission connecting rod (52), and the other end of the lifting elastic member (54) is connected to the lower working surface of the workbench (1).

5. The cone head surface grinding device for a prefilled syringe barrel according to claim 3, characterized in that: The jacking seat comprises a first jacking seat (511) and a second jacking seat (512) which are arranged opposite to each other. The jacking column (55) is inserted into the second jacking seat (512). The upper end of the jacking column (55) is connected to the jacking assembly (56). The lower end of the jacking column (55) is linked to the transmission connecting rod (52). The other end of the transmission connecting rod (52) is rotatably connected to the first jacking seat (511).

6. The device for grinding the surface of the cone head of a prefilled syringe barrel according to claim 5, characterized in that: The lifting assembly (56) comprises a lifting frame (561) and a roller assembly (562) located on the lifting frame (561).

7. The device for grinding the surface of the cone head of a prefilled syringe barrel according to claim 6, characterized in that: The driving wheel mechanism (3) is arranged on the outside of the first conveyor belt (21), and comprises a driving wheel seat (31) fixed on the workbench (1), a driving wheel group (32) arranged on the driving wheel seat (31), and a limiting block (33) located below the driving wheel group (32) and corresponding to the position of the roller group (562).

8. The device for grinding the surface of the cone head of a prefilled syringe barrel according to claim 7, characterized in that: The grinding mechanism (4) is arranged outside the second conveyor belt (22) and corresponds to the position of the driving wheel mechanism (3). The grinding mechanism (4) comprises a grinding wheel assembly (41) and a position adjustment assembly and an angle adjustment assembly (43) arranged in cooperation with the grinding wheel assembly (41).

9. The device for grinding the surface of the cone head of a prefilled syringe barrel according to claim 8, characterized in that: The position adjustment component comprises a guide plate (421), a guide seat (422) is arranged on the guide plate (421), an adjustment drive motor (423) is installed via an adjustment motor bracket (424), and an output shaft of the adjustment drive motor (423) drives a slide seat (426) on the guide seat (422) via an eccentric wheel (425) to achieve position adjustment.

10. The device for grinding the surface of the cone head of a prefilled syringe barrel according to claim 9, characterized in that: The angle adjustment assembly (43) is connected to the outer side of the guide plate (421) and is also movably connected to the grinding seat (40).

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