Special manufacturing tool for clamping jaw head body of glass needle cylinder of pre-filled syringe

Abstract

The utility model discloses a special manufacturing tool for a pre-filled syringe glass needle cylinder clamping jaw head body, which comprises a bottom plate fixed on a machine tool workbench through a bolt and a positioning seat fixedly mounted on the bottom plate, one end part of the positioning seat is provided with an opening end for accommodating a columnar end part at the upper end of the clamping jaw head body, and the other end part of the positioning seat is provided with an opening end for accommodating the columnar end part at the lower end of the clamping jaw head body. One side of the open end is provided with a groove part for accommodating the clamping jaw supporting body; a through hole for accommodating the hollow sleeve of the clamping jaw head body is formed in the opening end of the positioning seat, and a fastening nut is screwed at the other end, penetrating through the through hole, of the hollow sleeve; correction holes are formed in the positions, perpendicular to the vertical projection of the bottom plate, of the intersection points of the center lines of the inclined holes of the three clamping jaw supporting bodies. The tool can replace a traditional five-axis machine tool which is manufactured at high cost, manufacturing of multiple batches of clamping jaw heads is completed on the tool at present, the requirement is completely met, the effect is good, and the manufacturing cost is greatly reduced.

Description

Technical Field

[0001] This invention belongs to the field of pre-filled syringe glass syringe molding and processing technology. Specifically, this invention relates to a special tooling for manufacturing the gripper head body of a pre-filled syringe glass syringe. Background Technology

[0002] Prefilled syringes integrate "drug storage" and "injection" functions. Due to their advantages such as safety, convenience, high drug utilization rate, and prevention of secondary cross-contamination, they are highly favored in the biopharmaceutical field and are increasingly accepted by pharmaceutical companies, clinical medical staff, and patients, resulting in a continuous increase in market demand.

[0003] The applicant, Nanjing Light Machinery Packaging Machinery Co., Ltd., has filed an invention patent application entitled "A Pre-filled Syringe Glass Syringe Clamping Mechanism" with application number 202510349796X, which discloses a core component, the gripper head, i.e., the gripper head body. The gripper head body includes a hollow sleeve with a columnar end at the top of the sleeve. The center of the columnar end has a threaded hole for mounting a bottle holder. At least two gripper supports are provided on the outer circle of the columnar end. The gripper supports are provided with oblique holes for accommodating the gripper rods. The center lines of all the oblique holes intersect at a single point with the center line of the threaded hole for mounting the bottle holder.

[0004] The instruction manual clearly states that the gripper head is a key component of this mechanism, and its precision directly affects the forming quality of the glass syringe. The dimensional and positional accuracy of the three oblique holes is extremely important, especially the angular dimensions and consistency of the three oblique holes, which determine the fitting accuracy of the three grippers. Traditional machining methods are difficult to meet the precision requirements, and completing all machining in one clamping operation requires a five-axis machine tool, resulting in extremely high machining costs.

[0005] To address the aforementioned technical problems, this utility model proposes a set of tooling specifically for manufacturing the aforementioned gripper head body. Utility Model Content

[0006] This invention provides a special tooling for manufacturing the gripper head of a pre-filled syringe glass syringe.

[0007] The technical solution of this utility model is:

[0008] A special tooling for manufacturing a pre-filled syringe glass syringe gripper head body includes a base plate 2 fixed to a machine tool worktable 1 by bolts, and a positioning seat 3 fixed on the base plate 2. One end of the positioning seat 3 has an open end 301 for accommodating the upper columnar end of the gripper head body 8. One side of the open end 301 has a groove 302 for accommodating the gripper support body 81. At the position of the open end 301 of the positioning seat 3, a through hole 303 is provided for accommodating the hollow sleeve of the gripper head body 8. The other end of the hollow sleeve passing through the through hole 303 is screwed with a fastening nut 4. Among them, a correction hole 201 is provided at the intersection of the center lines of the three oblique holes of the gripper support body 81, which is perpendicular to the vertical projection position of the base plate 2.

[0009] The preferred technical solution provided by this utility model is:

[0010] The base plate 2 is positioned and connected to the positioning seat 3 via positioning pin 5.

[0011] The further preferred technical solution provided by this utility model is:

[0012] The base plate 2 is also fastened to the positioning seat 3 by means of hexagon socket head cap screws 6.

[0013] Another preferred technical solution provided by this utility model is:

[0014] One side of the base plate 2 is set as a bevel 202, and the bevel 202 is aligned with the side of the machine tool worktable 1 to achieve leveling.

[0015] Another preferred technical solution provided by this utility model is:

[0016] The outer side of one side of the groove portion 302 is also provided with a wing bolt 7 for clamping the gripper support body 81.

[0017] Beneficial effects:

[0018] This invention can replace the traditional high-cost manufacturing method using five-axis machine tools. Currently, multiple batches of gripper heads have been manufactured using the tooling of this invention, fully meeting the requirements, with good results, and significantly reducing manufacturing costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall assembly structure of this utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure;

[0021] Figure 3 for Figure 1 A three-dimensional structural diagram of the positioning seat 3 in the diagram;

[0022] Meaning of the markings in the attached diagram:

[0023] Machine tool worktable 1, base plate 2, alignment hole 201, bevel 202

[0024] Positioning seat 3, open end 301, groove portion 302, through hole 303.

[0025] 4. Fastening nut, 5. Locating pin, 6. Socket head screw, 7. Wing bolt, 8. Clamp head body, 81. Clamp support body. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Figure 1 This is a schematic diagram of the overall assembly structure of this utility model. Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure. Figure 3 for Figure 1 A three-dimensional structural diagram of the positioning seat 3 in the diagram, combined with the attached diagram. Figure 1 , Figure 2 as well as Figure 3 As shown, a special tooling for manufacturing a pre-filled syringe glass syringe gripper head body according to the present invention includes a base plate 2 fixed to the machine tool workbench 1 by bolts, and a positioning seat 3 fixed on the base plate 2. One end of the positioning seat 3 has an opening end 301 for accommodating the upper columnar end of the gripper head body 8. One side of the opening end 301 is provided with a groove portion 302 for accommodating the gripper support body 81. The outer side of one side of the groove portion 302 is also provided with a wing bolt 7 for clamping the gripper support body 81.

[0028] At the opening end 301 of the positioning seat 3, a through hole 303 is provided to accommodate the hollow sleeve of the gripper head body 8. A fastening nut 4 is screwed onto the other end of the hollow sleeve that passes through the through hole 303. A correction hole 201 is provided at the intersection of the center lines of the oblique holes of the three gripper supports 81, which is perpendicular to the vertical projection of the base plate 2.

[0029] The base plate 2 is positioned and connected to the positioning seat 3 by the positioning pin 5. The base plate 2 is also fastened to the positioning seat 3 by the internal hexagonal head screw 6. One side of the base plate 2 is set as a bevel 202, which is aligned with the side of the machine tool worktable 1 to achieve leveling.

[0030] The specific usage process of this utility model is as follows:

[0031] The tooling must be assembled before processing:

[0032] Position the positioning seat 3 and the base plate 2 using the positioning pin 5, and then fasten the positioning seat 3 and the base plate 2 together using the socket head cap screw 6. See Figure 1 .

[0033] After assembly, the coordinate measuring machine used for the tooling must be inspected to ensure the accuracy requirements are met.

[0034] How to use the tooling:

[0035] Step S1: Align the inclined edge 202 of the tooling with the side of the machine tool worktable 1, so that the inclined edge 202 is exactly parallel to the inclined hole of the gripper head body 8. Figure 2 Then, use screws to press the tooling onto the machine tool worktable 1;

[0036] Step S2: Use the machine tool spindle to align the correction hole 201 on the tooling base plate 2. The center of the correction hole 201 is exactly the projection of the intersection of the center lines of the three oblique holes.

[0037] Step S3: Insert the hollow sleeve of the gripper head body 8 into the through hole 303 of the positioning seat 3, tighten the other end of the hollow sleeve with the fastening nut 4, and at the same time press the side of a gripper support body 81 of the gripper head body 8 with the wing bolt 7.

[0038] Step S4: Finally, use a custom-made tool to machine one of the oblique holes according to the center height dimension;

[0039] Step S5: Repeat steps S3 to S4 to complete all processing.

[0040] Multiple batches of gripper heads have been manufactured using this tooling, fully meeting the requirements and achieving excellent results, significantly reducing manufacturing costs.

[0041] The described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A special manufacturing tool for a pre-filled syringe glass barrel clamp jaw head body, comprising a bottom plate (2) fixed on a machine tool workbench (1) by bolts, and a positioning seat (3) fixed on the bottom plate (2), characterized in that, The end of the positioning seat (3) is provided with an open end (301) for accommodating the upper columnar end of the clamping jaw head body (8), and one side of the open end (301) is provided with a groove part (302) for accommodating the clamping jaw support body (81); the open end (301) of the positioning seat (3) is provided with a through hole (303) for accommodating the hollow sleeve of the clamping jaw head body (8), and the other end of the hollow sleeve penetrating through the through hole (303) is screwed with a fastening nut (4); wherein the center lines of the inclined holes of the three clamping jaw support bodies (81) intersect perpendicularly to the vertical projection position of the bottom plate (2), and a correction hole (201) is arranged at the vertical projection position.

2. A special purpose manufacturing tool for a glass barrel gripper head body of a pre-filled syringe according to claim 1, characterized in that, The bottom plate (2) is positioned and connected with the positioning seat (3) through the positioning pin (5).

3. A special purpose manufacturing tool for a glass barrel gripper head body of a pre-filled syringe according to claim 2, wherein The bottom plate (2) is further fastened and connected with the positioning seat (3) through the inner hexagonal cylindrical head screw (6).

4. A special purpose manufacturing tool for a glass barrel gripper head body of a pre-filled syringe according to claim 3, wherein One side of the bottom plate (2) is provided as an inclined side (202), and the inclined side (202) is aligned with the side surface of the machine tool workbench (1) to realize the alignment.

5. A special purpose manufacturing tool for a glass barrel gripper head body of a pre-filled syringe according to claim 1, wherein The outer side surface of one side of the groove part (302) is further provided with a butterfly bolt (7) for clamping the clamping jaw support body (81).

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