Method for manufacturing a bottle feeding mechanism of a pharmaceutical filling machine

Abstract

The application relates to a manufacturing method of a bottle feeding mechanism of a medical filling machine. First, a cylindrical bar material 316L is blanked; a numerical control lathe is used to process a mandrel, and the mandrel is finely machined to a number, to the length and the outer diameter size of the mandrel; then, a cylindrical polyoxymethylene resin POM is blanked; the numerical control lathe is used to clamp an outer circle, position an end face, roughly machine an outline, and finely machine to a number; the length and the outer diameter size of the mandrel are matched with the outer diameter of the polyoxymethylene resin POM to be punched; the polyoxymethylene resin POM is pressed into the mandrel; then, the numerical control machine tool is used to clamp an outer circle, position an end face, roughly machine an outline, semi-finely machine, and finely machine to a number; the numerical control lathe is used to clamp the opposite face, position the end face, roughly machine an outline, semi-finely machine, and finely machine to a number; finally, a stainless steel screw sleeve is installed, installation holes are punched in the outer circle, locking holes are matched and punched on the mandrel, a stainless steel threaded pin is installed, and a helical line is processed. The stainless steel mandrel is assembled into the polyoxymethylene resin part for integral processing, the helical line is processed, and deformation is avoided.

Description

Technical Field

[0001] This invention relates to a method for manufacturing a bottle feeding mechanism for a pharmaceutical filling machine. Background Technology

[0002] The bottle feeding mechanism of the pharmaceutical filling machine is an assembly consisting of an internal spindle and an external screw rod. The spindle is a central shaft made of 316L stainless steel. Figures 1a-1c As shown, the external screw is an exposed screw conveyor shaft made of polyoxymethylene resin (POM), with an outer diameter of φ100 and a length of 560 mm. Figure 2 As shown; install 6 M5×10 stainless steel threaded inserts on this basis, as follows. Figures 3a-3c As shown, and one M6×20 stainless steel threaded pin, as Figure 4 As shown. It is assembled and CNC machined. The existing manufacturing process processes the two materials separately. The processing of polyoxymethylene resin has the following difficulties: processing polyoxymethylene resin separately is greatly affected by external factors, the workpiece is prone to deformation, which makes it difficult to control the dimensional accuracy. The final product is defective due to the influence of the size of the parts (polyoxymethylene resin material), which wastes a lot of manpower and resources, is inefficient, has a high defect rate, and has high production costs. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a method for manufacturing the bottle feeding mechanism of a pharmaceutical filling machine.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] A method for manufacturing a bottle-feeding mechanism for a pharmaceutical filling machine, the mechanism comprising an internal spindle and an external helical rod, characterized by the following manufacturing steps:

[0006] 1) Using a cylindrical bar stock, material 316L, cut to 556×25m6 ( (mm dimension)

[0007] 2) CNC lathe machining of the mandrel: Positioning by end face, rough machining of the outer shape with a roughing feed of 1mm and a allowance of 1mm, adjusting the machine tool, semi-finishing with a allowance of 0.5mm, and then finishing to the specified dimensions. The mandrel length is 543 (mm). ) mm, spindle outer diameter 25m6 ( mm, chamfer 0.5×45°;

[0008] 3) Use a cylindrical polyoxymethylene resin (POM) material, cut to a size of 570×100mm;

[0009] 4) Clamp the outer diameter on the CNC lathe, position the end face, rough machine the outer shape with a roughing feed of 1mm and a allowance of 1mm. Adjust the machine tool, semi-finish machine with a allowance of 0.5mm, and then finish machine to the specified dimensions, turning a length of 560mm. ) mm, outer diameter of the machine is 100 mm, the center is drilled to match the outer diameter of the spindle, the center hole is 25H7 ( );

[0010] 5) A mandrel is pressed into the center of the polyoxymethylene (POM) resin core;

[0011] 6) CNC machine tool processing

[0012] 6a. Clamp the outer diameter, position the end face, rough machine the outer shape, start with a roughing feed of 1mm, leave a 1mm allowance, adjust the machining tool, semi-finish machine with a 0.5mm allowance, then finish machine to the specified diameter, drill holes in the end face of the polyoxymethylene resin (POM) with a diameter of 43 (mm). ) mm, depth 15 mm, drill six evenly distributed threaded sleeve holes on a circle with a diameter of φ34 mm, φ7.2 mm, depth 13 mm, ensuring the dimensions are accurate. Use a 4 mm diameter tungsten carbide drill bit to machine the inner hole of the 316L mandrel to 20 (mm). mm, depth 65 mm;

[0013] 6b. Clamp on the CNC lathe from the reverse side, position the end face, rough machine the outer shape with a roughing feed of 1mm and a allowance of 1mm. Adjust the machine tool, semi-finish machine with a allowance of 0.5mm, then finish machine to the specified diameter. Drill holes in the end face of the polyoxymethylene (POM) resin with a diameter of 47mm. ) mm, depth 15 ( ) mm, 316L mandrel end face machining diameter φ21mm, depth 11.5mm, end face machining diameter φ17f7 ( ) mm, depth 9.5 ( ) mm, chamfer 2×30°, milling machine clamps the outer circle of the mandrel, end face positioning, machine the mandrel, leaving φ8.5 ( ) mm, depth 7 ( mm, ensure all dimensions are accurate to the nearest whole number, and chamfer 1×30°;

[0014] 7) Install 6 M5×10 stainless steel threaded inserts, positioned by the largest outer diameter, clamped at the small end face using a pin clamping method, and clamped at the large end face using an M5×10 screw fixing method with a fixture; first, drill mounting holes on the 100mm diameter outer diameter, and drill locking holes on the mandrel with a diameter of 6×1mm, and install M6×20 stainless steel threaded pins; then machine the spiral, clamp on four axes, center and use a dial indicator, rough feed of 1mm, allowance of 1mm, adjust the machining tool, semi-finish machining with a allowance of 0.5mm, and then finish machining to the specified value; the screw helix outer diameter is 100mm, the inner diameter is 65mm and constant, and the length is 322mm when the number of thread turns is 5; the diameter of the medicine bottle conveyed by the thread groove is φ36mm; the first section pitch s1=36mm is constant, and the length L1=54mm. The second pitch s2 is linear, transitioning from s1=36mm to S3=55mm, with a length L2=5mm. The third pitch s3=55mm is constant, with a length L3=421mm. The fourth pitch s4 is linear, transitioning from s3=55mm to S5=137.4mm, with a length L4=5mm. The fifth pitch s5=137.4mm is constant, with a length L5=75mm.

[0015] 8) Process the internal mandrel and external spiral rod, install stainless steel threaded sleeves and stainless steel threaded pins to form the bottle feeding mechanism of the pharmaceutical filling machine.

[0016] Furthermore, in the manufacturing method of the above-mentioned pharmaceutical filling machine bottle feeding mechanism, in step 1), a saw is used to clamp the material from the side and cut it to a size of 556×25m6. (mm size)

[0017] Furthermore, in the above-mentioned manufacturing method of the bottle feeding mechanism of the pharmaceutical filling machine, in step 2), the mandrel is processed on a CNC lathe, and the outer circle of the workpiece is clamped by a three-jaw chuck of the lathe for end face positioning and rough machining of the outer shape.

[0018] Furthermore, in the manufacturing method of the above-mentioned pharmaceutical filling machine bottle feeding mechanism, step 3) uses a saw to clamp the material from the side and cut it to a size of 570×100mm.

[0019] Furthermore, in the above-mentioned manufacturing method of the bottle feeding mechanism of the pharmaceutical filling machine, in step 7), a stainless steel screw sleeve is installed, and on the OKUMA machining center MB56VAR machine tool, it is positioned with the maximum outer circle, clamped by the small end face ejector pin method, and clamped by the large end face using a fixture to install M5×10 screws for fixing.

[0020] Furthermore, in the above-mentioned manufacturing method of the bottle feeding mechanism of the pharmaceutical filling machine, in step 5), the mandrel is interference-fitted with polyoxymethylene resin (POM).

[0021] Compared with the prior art, the present invention has significant advantages and beneficial effects, specifically reflected in the following aspects:

[0022] ① This invention adopts an integral assembly processing method. During the manufacturing process, the stainless steel mandrel is installed into the white polyoxymethylene resin part and processed as a whole. The spiral line is processed. After adopting the integral assembly processing method, the product deformation caused by the tool processing the polyoxymethylene resin alone is avoided, which greatly ensures the dimensional accuracy and significantly reduces the defect rate of the final product.

[0023] ②The overall assembly process reduces assembly time, greatly improves processing efficiency, is convenient and quick, and reduces waste of manpower and material resources;

[0024] ③ It has stable dimensions, a simple manufacturing process, significantly reduces production costs, and improves processing and manufacturing efficiency.

[0025] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing specific embodiments of the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1a : Front view of the mandrel;

[0028] Figure 1b : Figure 1a A magnified view of part X;

[0029] Figure 1c : Figure 1a A magnified schematic diagram of part Z;

[0030] Figure 2 Schematic diagram of a polyoxymethylene (POM) resin screw rod;

[0031] Figure 3a : A three-dimensional schematic diagram of a stainless steel threaded insert;

[0032] Figure 3b : Side view of a stainless steel threaded insert;

[0033] Figure 3c : Figure 3b DD cross-sectional view;

[0034] Figure 4 Schematic diagram of stainless steel threaded pin;

[0035] Figure 5 : A schematic diagram of the manufacturing process in step 1;

[0036] Figure 6 : A schematic diagram of the manufacturing process in step 2;

[0037] Figure 7 : A schematic diagram of the manufacturing process in step 3;

[0038] Figure 8 : A schematic diagram of the manufacturing process in step 4;

[0039] Figure 9a : A schematic diagram of the manufacturing process in step 5;

[0040] Figure 9b Another schematic diagram of the manufacturing process in step 5;

[0041] Figure 10a : A schematic diagram of the manufacturing process in step 6a;

[0042] Figure 10b Another schematic diagram of the manufacturing process in step 6a;

[0043] Figure 11a : A schematic diagram of the manufacturing process in step 6b;

[0044] Figure 11b Another schematic diagram of the manufacturing process in step 6b;

[0045] Figure 12a : A schematic diagram of the manufacturing process in step 7;

[0046] Figure 12b Another schematic diagram of the manufacturing process in step 7;

[0047] Figure 13a : Finished product illustration;

[0048] Figure 13b Another schematic diagram of the finished product;

[0049] Figure 13c Another schematic diagram of the finished product. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0051] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this invention, directional and ordinal terms are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0052] Compared to traditional techniques that process two materials separately before assembling, this invention optimizes the processing technology by integrating the stainless steel mandrel into a white polyoxymethylene resin part for overall processing, resulting in better performance.

[0053] The manufacturing process steps of the bottle feeding mechanism of the pharmaceutical filling machine of the present invention are as follows:

[0054] 1) Prepare a cylindrical bar stock, material 316L, use a saw to clamp the outer circumference of the side, and cut it to 556×25m6 ( ) mm size, such as Figure 5 As shown;

[0055] 2) CNC lathe machining of mandrel: The workpiece outer diameter is clamped by the lathe's three-jaw chuck, positioned by the end face. Rough machining of the outer shape is performed with a roughing feed of 1mm and a allowance of 1mm. The machine tool is adjusted, and semi-finishing is performed with a allowance of 0.5mm. Then, finish machining is performed to the specified dimensions. The mandrel length is 543 (mm). ) mm, spindle outer diameter 25m6 ( mm, chamfer 0.5×45°, such as Figure 6 As shown;

[0056] 3) Prepare a cylindrical white polyoxymethylene (POM) resin piece. Using a saw, clamp the outer circumference of the side and cut it to a size of 570×100mm. Figure 7 As shown;

[0057] 4) Clamp the outer diameter on the CNC lathe, position the end face, rough machine the outer shape with a roughing feed of 1mm and a allowance of 1mm. Adjust the machine tool, semi-finish machine with a allowance of 0.5mm, and then finish machine to the specified dimensions, turning a length of 560mm. ) mm, outer diameter of the machine is 100 mm, the center is drilled to match the outer diameter of the spindle, the center hole is 25H7 ( ),like Figure 8 As shown;

[0058] 5) A white polyoxymethylene (POM) resin core is pressed into the mandrel with an interference fit, such as... Figure 9a , 9b ;

[0059] 6) CNC machine tool processing

[0060] 6a. Clamp the outer diameter, position the end face, rough machine the outer shape, start with a roughing feed of 1mm, leave a 1mm allowance, adjust the machining tool, semi-finish machine with a 0.5mm allowance, then finish machine to the specified diameter, drill holes in the end face of the white polyoxymethylene resin (POM) with a diameter of 43 (mm). ) mm, depth 15 mm, drill six evenly distributed threaded sleeve holes on a circle with a diameter of φ34 mm, φ7.2 mm, depth 13 mm, ensuring the dimensions are accurate. Use a 4 mm diameter tungsten carbide drill bit to machine the inner hole of the 316L mandrel to 20 (mm). mm, depth 65 mm, such as Figure 10a , 10b ;

[0061] 6b. Clamp on the CNC lathe from the reverse side, position the end face, rough machine the outer shape with a roughing feed of 1mm and a allowance of 1mm. Adjust the machine tool, semi-finish machine with a allowance of 0.5mm, then finish machine to the specified dimensions. Drill holes in the end face of the white polyoxymethylene resin (POM) with a diameter of 47mm. ) mm, depth 15 ( mm, such as Figure 11a , 11b The end face of the 316L mandrel has a machining diameter of φ21mm and a depth of 11.5mm, and the end face has a machining diameter of φ17f7. ) mm, depth 9.5 ( ) mm, chamfer 2×30°, milling machine clamps the outer circle of the mandrel, end face positioning, machine the mandrel, leaving φ8.5 ( ) mm, depth 7 ( mm, ensure all dimensions are accurate to the nearest whole number, and chamfer 1×30°;

[0062] 7) Install 6 M5×10 stainless steel threaded inserts. The workpieces are located on the machining center, positioned by the largest outer diameter, clamped using a pin clamp on the small end face, and secured with M5×10 screws using a fixture on the large end face. First, drill mounting holes on the outer diameter of the polyoxymethylene resin insert, and drill locking holes with a diameter of 6×1 mm on the mandrel. Install M6×20 stainless steel threaded pins. Then, machine the helix using a four-axis clamping system, centering and dial indicator, with a roughing feed of 1 mm and a 1 mm allowance. Adjust the machine tool, perform semi-finishing with a 0.5 mm allowance, and then finish machining to the specified dimensions. The screw has an outer helix diameter of 100 mm and an inner diameter of 65 mm. With a constant thread pitch of 5 turns, the length is 322mm; the thread groove conveys a medicine bottle with a diameter of φ36mm; the first segment has a constant pitch s1=36mm and a length L1=54mm; the second segment has a linear pitch s2, transitioning from s1=36mm to S3=55mm, with a length L2=5mm; the third segment has a constant pitch s3=55mm and a length L3=421mm; the fourth segment has a linear pitch s4, transitioning from s3=55mm to S5=137.4mm, with a length L4=5mm; the fifth segment has a constant pitch s5=137.4mm and a length L5=75mm; (The last sentence appears to be a separate, unrelated statement.) Figure 12a , 12b ;

[0063] like Figure 13a , 13b After processing, the product consists of an internal 316L mandrel and an external polyoxymethylene resin POM spiral, fitted with stainless steel threaded sleeves and stainless steel threaded pins. Through assembly and CNC machining, it becomes the bottle feeding mechanism for a pharmaceutical filling machine.

[0064] In summary, this invention employs an integrated machining process. The manufacturing process involves inserting a stainless steel mandrel into a white polyoxymethylene resin part and machining the spiral. By using an integrated machining process, product deformation caused by machining polyoxymethylene resin with individual tools is avoided, which greatly ensures dimensional accuracy and significantly reduces the defect rate of the final product.

[0065] The overall assembly process reduces assembly time, greatly improves processing efficiency, is convenient and quick, and reduces waste of manpower and material resources.

[0066] It features stable dimensions, a simple processing procedure, significantly reduced production costs, and improved manufacturing efficiency.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0068] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

[0069] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A method for manufacturing a bottle-feeding mechanism for a pharmaceutical filling machine, the mechanism comprising an internal spindle and an external helical rod, characterized in that: The manufacturing process includes the following steps: 1) Using a cylindrical bar stock, material 316L, cut to 556×25m6 ( (mm dimension) 2) CNC lathe machining of the mandrel: Positioning by end face, rough machining of the outer shape with a roughing feed of 1mm and a allowance of 1mm, adjusting the machine tool, semi-finishing with a allowance of 0.5mm, and then finishing to the specified dimensions. The mandrel length is 543 (mm). ) mm, spindle outer diameter 25m6 ( mm, chamfer 0.5×45°; 3) Use a cylindrical polyoxymethylene resin (POM) material, cut to a size of 570×100mm; 4) Clamp the outer diameter on the CNC lathe, position the end face, rough machine the outer shape with a roughing feed of 1mm and a allowance of 1mm. Adjust the machine tool, semi-finish machine with a allowance of 0.5mm, and then finish machine to the specified dimensions, turning a length of 560mm. ) mm, outer diameter of the machine is 100 mm, the center is drilled to match the outer diameter of the spindle, the center hole is 25H7 ( ); 5) A mandrel is pressed into the center of the polyoxymethylene (POM) resin core; 6) CNC machine tool processing 6a. Clamp the outer diameter, position the end face, rough machine the outer shape, start with a roughing feed of 1mm, leave a 1mm allowance, adjust the machining tool, semi-finish machine with a 0.5mm allowance, then finish machine to the specified diameter, drill holes in the end face of the polyoxymethylene resin (POM) with a diameter of 43 (mm). ) mm, depth 15 mm, drill six evenly distributed threaded sleeve holes on a circle with a diameter of φ34 mm, φ7.2 mm, depth 13 mm, ensuring the dimensions are accurate. Use a 4 mm diameter tungsten carbide drill bit to machine the inner hole of the 316L mandrel to 20 (mm). mm, depth 65 mm; 6b. Clamp on the CNC lathe from the reverse side, position the end face, rough machine the outer shape with a roughing feed of 1mm and a allowance of 1mm. Adjust the machine tool, semi-finish machine with a allowance of 0.5mm, then finish machine to the specified diameter. Drill holes in the end face of the polyoxymethylene (POM) resin with a diameter of 47mm. ) mm, depth 15 ( ) mm, 316L mandrel end face machining diameter φ21mm, depth 11.5mm, end face machining diameter φ17f7 ( ) mm, depth 9.5 ( ) mm, chamfer 2×30°, milling machine clamps the outer circle of the mandrel, end face positioning, machine the mandrel, leaving φ8.5 ( ) mm, depth 7 ( mm, ensure all dimensions are accurate to the nearest whole number, and chamfer 1×30°; 7) Install 6 M5×10 stainless steel threaded inserts, positioned by the largest outer diameter, clamped at the small end face using a pin clamping method, and clamped at the large end face using an M5×10 screw fixing method with a fixture; first, drill mounting holes on the 100mm diameter outer diameter, and drill locking holes on the mandrel with a diameter of 6×1mm, and install M6×20 stainless steel threaded pins; then machine the spiral, clamp on four axes, center and use a dial indicator, rough feed of 1mm, allowance of 1mm, adjust the machining tool, semi-finish machining with a allowance of 0.5mm, and then finish machining to the specified value; the screw helix outer diameter is 100mm, the inner diameter is 65mm and constant, and the length is 322mm when the number of thread turns is 5; the diameter of the medicine bottle conveyed by the thread groove is φ36mm; the first section pitch s1=36mm is constant, and the length L1=54mm. The second pitch s2 is linear, transitioning from s1=36mm to S3=55mm, with a length L2=5mm. The third pitch s3=55mm is constant, with a length L3=421mm. The fourth pitch s4 is linear, transitioning from s3=55mm to S5=137.4mm, with a length L4=5mm. The fifth pitch s5=137.4mm is constant, with a length L5=75mm. 8) Process the internal mandrel and external spiral rod, install stainless steel threaded sleeves and stainless steel threaded pins to form the bottle feeding mechanism of the pharmaceutical filling machine.

2. The manufacturing method of the bottle feeding mechanism of the pharmaceutical filling machine according to claim 1, characterized in that: Step 1), using a saw, clamp the material from the side and cut it to 556×25m6 ( (mm size) 3. The manufacturing method of the bottle feeding mechanism of the pharmaceutical filling machine according to claim 1, characterized in that: Step 2), CNC lathe machining mandrel, lathe three-jaw chuck clamps the outer circle of the workpiece, positioning it with the end face, rough machining the shape.

4. The manufacturing method of the bottle feeding mechanism of the pharmaceutical filling machine according to claim 1, characterized in that: Step 3), using a saw to clamp the material from the side and cut it to a size of 570×100mm.

5. The manufacturing method of the bottle feeding mechanism of the pharmaceutical filling machine according to claim 1, characterized in that: Step 7) Install the stainless steel threaded sleeve. On the OKUMA machining center MB56VAR machine tool, use the maximum outer diameter for positioning, clamp the small end face with a pin, and use a fixture to install M5×10 screws to fix the large end face.

6. The manufacturing method of the bottle feeding mechanism of the pharmaceutical filling machine according to claim 1, characterized in that: Step 5), the mandrel is interference-fitted with polyoxymethylene resin (POM).

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