Automatic unloading tool for sterile injection needle rolling

Abstract

This utility model discloses an automatic unloading fixture for roller printing of sterile injection needles, including a worktable with a steel plate engraved with the characters to be printed fixed on it. A rubber head assembly is located above the worktable, and the rubber head assembly achieves forward and backward movement and up and down movement of the rubber head through a sliding component and a lifting component. An automatic unloading component is located in front of the worktable, fixed to a slider, which is slidably connected to a support plate. A rack is arranged parallel to the top of the support plate. The automatic unloading component includes a base, a rotating shaft, a push rod, and a cylinder. The fixture achieves roller printing by driving the automatic unloading component to move horizontally through the slider. The push rod, driven by the cylinder, pushes out the product with a stable force, automatically unloading the material. This significantly shortens the production cycle and avoids accidental manual contact with the printing surface, effectively preventing quality defects such as scale wear and ink displacement.

Description

Technical Field

[0001] This utility model relates to the field of roller printing device technology, and in particular to an automatic unloading tooling for roller printing with sterile injection needles. Background Technology

[0002] Disposable sterile injection needles are widely used in the medical field due to their ability to precisely adjust the needle length, effectively ensuring that operators can complete medical tasks efficiently and accurately. Currently, the markings on these injection needles are generally printed using a pad printing (roll printing) process. The principle is to use a rubber tip to transfer the content of a steel plate with the text to be printed onto a substrate. While the rubber tip is in contact with the product, the two rotate relative to each other, thus completing the roll printing operation.

[0003] In the current production process, the unloading of sterile injection needles after the graduations are printed mainly relies on manual operation. However, this traditional manual unloading method has many drawbacks: on the one hand, manual unloading is slow, which seriously restricts production efficiency; on the other hand, because sterile injection needles are small in size, it is easy to accidentally touch the printed content during manual unloading, resulting in problems such as blurred text and unclear graduations, which increases the defect rate and production costs.

[0004] Therefore, traditional manual unloading methods are no longer sufficient to meet the demands of modern production. There is an urgent need to design a roller printing fixture that can automatically unload material during the roller's retraction phase, thereby improving production efficiency and ensuring product quality. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the existing technology and provide an automatic unloading tooling for sterile injection needle roller printing that can improve production efficiency and ensure product quality.

[0006] The technical solution adopted by this utility model to solve its technical problem is: an automatic unloading tooling for printing with sterile injection needles, including a worktable, a steel plate with the characters to be printed engraved fixed on the worktable, a glue head assembly above the worktable, the glue head assembly realizing the back-and-forth and up-and-down movement of the glue head through a sliding assembly and a lifting assembly, an automatic unloading assembly in front of the worktable, the automatic unloading assembly being fixed on a slider, the slider being slidably connected to a support plate, and a rack being arranged parallel above the support plate;

[0007] The automatic unloading assembly includes a base, a rotating shaft, a push rod, and a cylinder. The base is fixed to the slider. The rotating shaft passes through the base and has a gear that meshes with a rack at one end and is connected to the product to be printed at the other end. The push rod passes through the center of the rotating shaft and comes into contact with the product to be printed when the cylinder is activated. The other end is connected to the screw of the cylinder. The screw and the push rod are arranged parallel to each other.

[0008] Furthermore, a positioning block is fixedly installed at one end of the rotating shaft on the product to be printed, and the end of the positioning block is provided with a bayonet and a collar that cooperate with the inside of the product to be printed.

[0009] Furthermore, the screw and the push rod are connected by a connecting plate.

[0010] Furthermore, a bearing is installed between the rotating shaft and the base.

[0011] Furthermore, the cylinder is fixed to the base by an L-shaped bracket.

[0012] The beneficial effects of this utility model's automatic unloading fixture for sterile injection needle roller printing are:

[0013] 1. The tooling uses a slider to drive the automatic unloading component to move horizontally to achieve roller printing. The ejector rod, driven by the cylinder, pushes out the product with a stable force, automatically unloading the product. This transforms the tedious process of manually unloading one piece at a time into automated continuous operation, significantly shortening the production cycle. At the same time, it avoids accidental manual contact with the roller printing surface, effectively preventing quality defects such as scale wear and ink displacement.

[0014] 2. By using a rack and pinion drive to synchronize product rotation and printing, combined with the linkage design of the unloading component, automatic unloading can be triggered the instant the printing process is completed, achieving integrated automatic operation of "printing-unloading". This not only simplifies the process flow but also provides technical support for the automation and intelligent upgrading of sterile injection needle production. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a structural schematic diagram of the automatic unloading assembly of this utility model;

[0018] Figure 3 This is a schematic diagram of the automatic unloading assembly of this utility model from another perspective;

[0019] Figure 4 This is a schematic diagram of the positioning block of this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the product to be printed according to this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the positioning block of this utility model when it is installed and matched with the product to be printed;

[0022] In the diagram: 1. Workbench, 2. Steel plate, 3. Glue head assembly, 4. Automatic unloading assembly, 5. Slider, 6. Support plate, 7. Rack, 8. Product to be printed, 41. Base, 42. Rotary shaft, 43. Top rod, 44. Cylinder, 441. Screw, 45. Gear, 46. Positioning block, 461. Bayonet, 462. Collar, 47. Connecting plate, 48. Bearing, 49. L-shaped bracket. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0024] like Figure 1 An automatic unloading fixture for printing on sterile injection needles is shown, including a worktable 1, a steel plate 2 with the characters to be printed engraved fixed on the worktable 1, a glue head assembly 3 above the worktable 1, the glue head assembly 3 realizes the back-and-forth and up-and-down movement of the glue head through a sliding assembly and a lifting assembly, an automatic unloading assembly 4 is provided in front of the worktable 1, the automatic unloading assembly 4 is fixed on a slider 5, the slider 5 is slidably connected to a support plate 6, and a rack 7 is fixed parallel to the top of the support plate 6.

[0025] The automatic unloading assembly 4 includes a base 41, a rotating shaft 42, a push rod 43, and a cylinder 44. The base 41 is fixed to the slider 5. The rotating shaft 42 passes through the base 41, and a bearing 48 is installed between the rotating shaft 42 and the base 41. A gear 45 that meshes with the rack 7 is installed at one end of the rotating shaft 42, and a positioning block 46 is fixedly installed at the other end of the rotating shaft 42. The end of the positioning block 46 is provided with a bayonet 461 and a collar 462 that cooperate with the inside of the product 8 to be printed.

[0026] The push rod 43 passes through the center of the rotating shaft 42 and comes into contact with the product 8 to be printed under the action of the cylinder 44. The other end of the push rod 43 is connected to the screw 441 of the cylinder 44. The screw 441 is arranged parallel to the push rod 43 and is connected by a connecting plate 47. The cylinder 44 is fixed to the base 41 by an L-shaped bracket 49.

[0027] Before starting the roller printing operation, the operator needs to precisely position the printing head assembly 3 at a suitable height directly above the product 8 (sterile injection needle) to be printed via the sliding and lifting components. Once ready, the slider drive device is activated, and the automatic unloading assembly 4 begins to move horizontally left and right under the drive of the slider 5. During this movement, a cleverly utilized rack and pinion transmission mechanism causes the gear 45, which meshes with the rack 7, to rotate. The gear 45 is fixedly connected to the rotating shaft 42, thus driving the rotating shaft 42 to rotate synchronously. Because there is a reliable connection between the product 8 to be printed and the rotating shaft 42, the rotation of the shaft 42 will cause the product 8 to rotate as well. With the combined effect of the automatic unloading assembly 4's left and right movement and the rotation of the product 8, the printing head assembly 3 accurately transfers the scale pattern onto the circumferential surface of the product, completing the entire circumferential scale transfer process.

[0028] After the scale transfer process is successfully completed, the system enters the unloading stage. At this time, the cylinder drive device is activated, and the cylinder screw 441 starts working, driving the push rod 43 to move along a specific trajectory towards the product 8 to be printed. During the movement, the push rod 43 gradually contacts and applies a pushing force to the transferred product, breaking the fixed constraint between the product 8 to be printed and the positioning block 46, and successfully pushing the product 8 out of the positioning position, realizing automatic unloading. After unloading, the push rod 43 is reset under the action of the cylinder 44, waiting for the next unloading command; at the same time, the automatic unloading component 4 also returns to the initial position, ready to receive the next batch of products to be printed and unloaded. Throughout the process, the various components of the tooling system cooperate and work together to realize the automated operation of sterile injection needle printing and unloading, effectively improving production efficiency and product quality stability.

[0029] It should be noted that the structural design of the sliding component and the lifting component in this embodiment adopts the following scheme:

[0030] The sliding assembly includes a slide rail, a slider, and a drive device. The slide rail is fixedly mounted on the worktable and perpendicular to the translational direction of the automatic unloading assembly. The rubber head assembly is connected to the slider of the sliding assembly via a mounting base. The drive device adopts a combination structure of a motor and a lead screw. The motor is fixed at one end of the worktable, and the lead screw is set parallel to the slide rail. The lead screw and the slider are connected by a lead screw and nut pair. When the motor drives the lead screw to rotate, it can drive the slider to slide back and forth along the slide rail, thereby realizing the back and forth movement of the rubber head assembly.

[0031] The lifting assembly includes an electric push rod and a connecting frame. The electric push rod is vertically fixed on the slider of the sliding assembly. One end of the connecting frame is fixedly connected to the output end of the electric push rod, and the other end is connected to the glue head assembly. After the electric push rod is powered on, its output end can move vertically, which drives the glue head assembly to move up and down through the connecting frame. This enables the glue head assembly to be accurately positioned in the vertical direction to meet the working requirements of different height positions between the glue head assembly and the product to be printed.

[0032] The design of sliding and lifting components is a conventional design, which can be implemented by technicians based on common sense, and is not limited to the above solutions.

[0033] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An automatic unloading tool for sterile injection needle rolling, comprising a workbench (1), a steel plate (2) with a to-be-transferred font fixed on the workbench (1), a rubber head assembly (3) arranged above the workbench (1), and the rubber head assembly (3) achieving forward and backward and up and down movements of the rubber head through a sliding assembly and a lifting assembly, characterized in that: An automatic unloading assembly (4) is provided in front of the workbench (1). The automatic unloading assembly (4) is fixed on the slider (5). The slider (5) is slidably connected to the support plate (6). A rack (7) is fixed parallel above the support plate (6). ​ The automatic unloading assembly (4) includes a base (41), a rotating shaft (42), a push rod (43), and a cylinder (44). The base (41) is fixed to the slider (5). The rotating shaft (42) passes through the base (41) and has a gear (45) that meshes with the rack (7) installed at one end. The other end is connected to the product to be printed (8). The push rod (43) passes through the center of the rotating shaft (42) and contacts the product to be printed (8) under the starting action of the cylinder (44). The other end of the push rod (43) is connected to the screw (441) of the cylinder (44). The screw (441) and the push rod (43) are arranged parallel to each other.

2. The automatic unloading tool for sterile injection needle roll marking according to claim 1, characterized in that: The rotating shaft (42) has a positioning block (46) fixedly installed at one end of the product to be printed (8). The end of the positioning block (46) is provided with a bayonet (461) and a collar (462) that cooperate with the inside of the product to be printed (8).

3. The automatic unloading fixture for sterile injection needle roller printing according to claim 1, characterized in that: The screw (441) and the push rod (43) are connected by a connecting plate (47).

4. The automatic unloading fixture for sterile injection needle roller printing according to claim 1, characterized in that: A bearing (48) is installed between the rotating shaft (42) and the base (41).

5. The automatic unloading fixture for sterile injection needle roller printing according to claim 1, characterized in that: The cylinder (44) is fixed to the base (41) by an L-shaped bracket (49).

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