Molding device and molding method for thin-wall hollow pipe for fixing antimony metal ball

Abstract

The invention relates to the field of hollow pipe preparation, and provides a molding device and a molding method for a thin-wall hollow pipe for fixing an antimony metal ball in order to solve the problems that an existing hollow pipe is poor in consistency, low in efficiency and the like, the molding device comprises a base, an upper pressing assembly and a side pressing assembly; a transverse boss is arranged in the middle of the base, the upper pressing module comprises an upper pressing block and two upper guide rods fixed to the transverse boss, and the two upper guide rods located between the upper pressing block and the transverse boss are each sleeved with an upper compression spring used for providing return thrust for the upper pressing block; the side pressing assembly comprises two side guide rods, a left side module and a right side module, the left side module and the right side module are the same in structure, the left side module comprises a mounting plate and two side pressing blocks, rectangular through grooves are formed in the transverse side face of the mounting plate, and the two side pressing blocks are slidably mounted in the two rectangular through grooves respectively; and side compression springs sleeve the side guide rods between the left side module and the base and between the base and the right side module and are used for providing return thrust for the left side module and the right side module.

Description

Technical Field

[0001] The present invention relates to the field of preparation of thin-walled tubular objects, and particularly to a shaping device and a shaping method for a thin-walled hollow tube for fixing antimony metal balls. Background Art

[0002] During the preparation of a photocathode of a vacuum optoelectronic device, it is necessary to perform shaping processing on a thin-walled hollow tube for fixing antimony metal balls to fix the antimony balls. The processing consistency of the thin-walled hollow tube for fixing antimony metal balls is one of the important factors to ensure the stability of the preparation of the photocathode of the vacuum optoelectronic device. The existing processing method of the thin-walled hollow tube mainly relies on the manual clamping method to perform the plasticity of the hollow tube. The operation process is complex, the labor cost is high, the work efficiency is low, and at the same time, it is impossible to ensure that the shaping length and shaping shape of the hollow tubes produced in batches are exactly the same during the manual operation process. As a result, there are many comprehensive problems in the subsequent production and processing process, which increases the difficulty of troubleshooting the photocathode failure and affects the preparation survival rate. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems of high labor cost, low work efficiency, poor consistency in the existing processing of thin-walled hollow tubes for fixing antimony metal balls, and inability to ensure the same shaping length and shaping shape of the thin-walled hollow tubes for fixing antimony metal balls in the same batch. Therefore, a shaping device and a shaping method for a thin-walled hollow tube for fixing antimony metal balls are proposed.

[0004] To achieve the above purpose, the technical solution proposed by the present invention is as follows:

[0005] A shaping device for a thin-walled hollow tube for fixing antimony metal balls, characterized in that it includes a base, an upper pressing assembly and a side pressing assembly;

[0006] A transverse boss is provided in the middle of the upper surface of the base, and transverse through holes penetrating through both ends are symmetrically opened on the base on both sides of the transverse boss; an arc-shaped groove is longitudinally opened in the middle of the transverse boss for placing the tube to be processed;

[0007] The upper pressing module includes an upper pressing block and two upper guide rods fixed on the transverse boss and located on both sides of the arc-shaped groove. The upper pressing block is movably connected to the tops of the two upper guide rods; upper compression springs are sleeved on the two upper guide rods between the upper pressing block and the transverse boss to provide a return thrust for the upper pressing block; a shaping table is provided at a position corresponding to the lower surface of the upper pressing block and the arc-shaped groove for performing shaping on the tube to be processed in the vertical direction;

[0008] The side pressing assembly includes two side guide rods, a left-side module and a right-side module symmetrically distributed on both sides of the base along the arc-shaped groove. The left-side module and the right-side module have the same structure, and both include a mounting plate formed by a horizontally arranged plate and a vertically arranged plate connected perpendicularly, and two side pressing blocks. The lower surface of the horizontally arranged plate is in sliding contact with the upper surface of the base. At the position corresponding to the horizontal boss on the middle of the horizontally arranged plate, a groove penetrating through its end and upper and lower surfaces is provided. Rectangular through grooves penetrating horizontally are provided at the ends of the horizontally arranged plate on both sides of the groove. The two side pressing blocks are respectively slidably installed in the two rectangular through grooves, and the sliding direction is parallel to the axis of the pipe to be processed. The two side pressing blocks are used to shape the pipe to be processed in the horizontal direction. At the positions corresponding to the two side through holes on the vertically arranged plate, side mounting holes are respectively provided.

[0009] The two side guide rods respectively pass through the two side through holes and are connected to the base. The left-side module and the right-side module are respectively sleeved at both ends of the side guide rod through the two side mounting holes. Side compression springs are sleeved on the side guide rod between the left-side module and the base and between the base and the right-side module, respectively, for providing a return thrust for the left-side module and the right-side module.

[0010] Further, a straight notch communicating with the rectangular through groove is provided on the upper surface of the horizontally arranged plate. The length direction of the straight notch is parallel to the axis of the pipe to be processed. A set screw for fixing the side pressing block is provided on the straight notch.

[0011] A threaded hole is provided at the position corresponding to the straight notch on the side pressing block. When the side pressing block moves along the rectangular through groove to the fixed position, the set screw and the threaded hole cooperate with each other to fix the side pressing block. By adjusting the positional relationship between the side pressing block and the rectangular through groove, the compressed length of the pipe to be processed in the horizontal direction is adjusted.

[0012] Further, limit nuts are provided at both ends of the two side guide rods for forming a stroke limit for the left-side module and the right-side module sleeved at both ends of the side guide rod.

[0013] Further, the upper pressing block is a concave pressing block, and two upper through holes are provided on its concave bottom surface. The upper pressing block is movably connected to the tops of the two upper guide rods through the two upper through holes.

[0014] Two upper mounting holes are provided at the positions corresponding to the two upper through holes on the horizontal boss. The bottom parts of the two upper guide rods are respectively fixed in the two upper mounting holes.

[0015] Further, counterbores are provided at both ends of the two side through holes, and external threads are provided at the positions corresponding to the counterbores on the side guide rod.

[0016] After the side guide rod passes through the side through hole, its two ends are fixed to the base through the cooperation of nuts and the external threads, and the nuts are embedded in the corresponding counterbores.

[0017] Furthermore, scale marks are provided on the upper surface of the transverse plates on each of the rectangular through slots for accurately positioning the moving position of the side pressing block relative to the axis of the pipe to be processed.

[0018] Furthermore, alignment scales are provided on the upper surface of the base for calibrating the axial position of the pipe to be processed.

[0019] Furthermore, transition rounded corners are provided at the edges of the pressure application surface of the side pressing block for forming a smooth transition between the processed surface and the unprocessed surface of the pipe to be processed.

[0020] Furthermore, chamfers are provided at the edges of both sides of the upper end of the base opposite to the left-side placement module and the right-side placement module.

[0021] Meanwhile, the present invention also proposes a shaping method for a thin-walled hollow pipe for fixing an antimony metal ball. Using the above-mentioned shaping device for a thin-walled hollow pipe for fixing an antimony metal ball, the special features are as follows: including the following steps:

[0022] S1. Place the pipe to be processed in the arc-shaped groove on the base;

[0023] S2. Apply a vertically downward pressure to the upper pressing block through an external pressing device, so that the upper pressing block moves vertically downward along the two upper guide rods, complete the vertical shaping of the pipe to be processed through the shaping table, and then make the upper pressing block return to its original position through the upper compression springs on the two upper guide rods;

[0024] S3. Place the antimony metal ball at a preset position inside the pipe to be processed, and adjust the positions of the respective side pressing blocks on the left-side placement module and the right-side placement module so that they move to the corresponding positions required for processing the pipe to be processed;

[0025] S4. Apply a horizontally inward pressure to the left-side placement module and the right-side placement module simultaneously through an external pressing device, so that the left-side placement module and the right-side placement module slide inward along the two ends of the side guide rods respectively, fix the antimony metal ball inside the pipe to be processed through the respective side pressing blocks, complete the horizontal shaping of the pipe to be processed, and then make the left-side placement module and the right-side placement module return to their original positions through the side compression springs on the two side guide rods, thereby completing the shaping of the thin-walled hollow pipe.

[0026] Advantages of the present invention:

[0027] (1) The shaping device for a thin-walled hollow pipe for fixing an antimony metal ball in the present invention has a simple structure, small volume, light weight, low cost, and convenient use. It can not only adjust the shaped lengths on both sides of the thin-walled hollow pipe according to different requirements, but also adjust the compressed length of the pipe to be processed in the horizontal direction by adjusting the relative position relationship between the side pressing block and the rectangular through slot, effectively improving the applicability of the shaping device and can be applied to the precision shaping of various thin-walled tubular objects.

[0028] (2) The present invention forms the shaping of the pipe to be processed in the vertical and horizontal directions through the cooperation of the upper pressing module and the side pressing module, which can effectively reduce the amount of manual participation, save labor costs, ensure the processing accuracy of the thin-walled hollow pipe, effectively improve the processing efficiency and processing safety, and ensure the consistency of the shaping length and shaping shape of the thin-walled hollow pipes in the same batch.

[0029] (3) The present invention ensures the reliability of the processing position of the workpiece to be processed through the scale marks on the side pressing module and the scale marks on the base, further ensuring the processing accuracy of the thin-walled hollow pipe.

[0030] (4) The present invention sets a transition fillet at the outer edge of the side pressing block, which can form a transition between the side pressing block and the workpiece to be processed, ensure that the outer shape of the thin-walled hollow pipe shell after shaping is beautiful and smooth, and effectively improve the processing accuracy of the device.

[0031] (5) The shaping method of the thin-walled hollow pipe for fixing the antimony metal ball of the present invention has a simple operation process and is easy to implement. The shaping of the thin-walled hollow pipe is realized through the cooperation of the upper pressing module and the side pressing module. By adjusting the processing position of the side pressing block, the length of the thin-walled hollow pipe to be shaped can be changed, improving the practicability and usability of the device. At the same time, by fixing the position of the side pressing block with set screws, the processing consistency of the thin-walled hollow pipes in the same batch can be ensured, effectively improving the production efficiency and production yield. Description of the Drawings

[0032] Figure 1 is a schematic structural diagram of an embodiment of the shaping device for the thin-walled hollow pipe for fixing the antimony metal ball of the present invention;

[0033] Figure 2 is an exploded view of an embodiment of the shaping device for the thin-walled hollow pipe for fixing the antimony metal ball of the present invention;

[0034] Figure 3 is a schematic installation structure diagram of the base, upper guide rod and side guide rod in the embodiment of the present invention;

[0035] Figure 4 is a schematic structural diagram of the upper pressing block in the embodiment of the present invention;

[0036] Figure 5 is a schematic structural diagram of the right-side module in the embodiment of the present invention;

[0037] Figure 6 is a schematic structural diagram of the side pressing block in the embodiment of the present invention;

[0038] Figure 7 is a schematic structural diagram of the side guide rod in the embodiment of the present invention;

[0039] Reference Signs:

[0040] 1 - Base, 2 - Transverse boss, 3 - Arc-shaped groove, 4 - Upper pressing block, 5 - Upper guide rod, 6 - Upper compression spring, 7 - Shaping table, 8 - Side guide rod, 9 - Left-side module, 10 - Right-side module, 11 - Mounting plate, 12 - Side pressing block, 13 - Groove, 14 - Rectangular through slot, 15 - Side mounting hole, 16 - Side compression spring, 17 - Set screw, 18 - Threaded hole, 19 - Straight notch, 20 - Locking nut, 21 - Upper through hole, 22 - Upper mounting hole, 23 - Scale mark, 24 - Alignment scale, 25 - Transition fillet, 26 - Chamfer. Detailed implementation mode

[0041] As Figure 1 And Figure 2 shown, the shaping device for the thin-walled hollow tube for fixing the antimony metal ball includes a base 1, an upper pressing assembly and a side pressing assembly. The base 1, the upper pressing assembly and the side pressing assembly are all processed from aluminum alloy, which can not only ensure the structural strength of the shaping device but also effectively reduce the overall mass of the shaping device;

[0042] As Figure 3 shown, a transverse boss 2 is provided in the middle of the upper surface of the base 1, and side through holes penetrating through both ends horizontally are symmetrically opened on the base 1 on both sides of the transverse boss 2; an arc-shaped groove 3 is longitudinally opened in the middle of the transverse boss 2 for placing the tube to be processed; upper mounting holes 22 are symmetrically provided on the transverse boss 2 on both sides of the arc-shaped groove 3; an alignment scale 24 is provided on the upper surface of the base 1 for calibrating the axial position of the tube to be processed;

[0043] The upper pressing module includes an upper pressing block 4 and two upper guide rods 5 fixed on the transverse boss 2 and located on both sides of the arc-shaped groove 3. As Figure 4 shown, the upper pressing block 4 is a concave pressing block, and two upper through holes 21 are opened on its concave bottom surface. The upper pressing block 4 is movably connected to the tops of the two upper guide rods 5 through the two upper through holes 21, and the bottoms of the two upper guide rods 5 are press-fitted into the two upper mounting holes 22 respectively; upper compression springs 6 are sleeved between the two upper guide rods 5 located between the upper pressing block 4 and the transverse boss 2 for providing a return thrust for the upper pressing block 4; the upper compression springs 6 can also ensure that there is a certain shaping allowance between the upper pressing block 4 and the transverse boss 2. While ensuring shaping in the vertical direction, it can also ensure the effective release of compressed gas during the compression process; a shaping table 7 is provided at the position corresponding to the lower surface of the upper pressing block 4 and the arc-shaped groove 3 for shaping the tube to be processed in the vertical direction;

[0044] The side pressing assembly includes two side guide rods 8, a left-side module 9 and a right-side module 10 symmetrically distributed on both sides of the base 1 along the arc-shaped groove 3. As Figure 5 And Figure 6As shown in the figure, the left-side module 9 and the right-side module 10 have the same structure, both including a mounting plate 11 and two side pressing blocks 12. The mounting plate 11 includes a horizontal plate and a vertical plate connected vertically. The lower surface of the horizontal plate is in sliding contact with the upper surface of the base 1. At the position corresponding to the horizontal boss 2 in the middle of the horizontal plate, a groove 13 penetrating through its ends and upper and lower surfaces is provided. Rectangular through slots 14 are provided at the ends of the horizontal plate on both sides of the groove 13. The two side pressing blocks 12 are respectively slidably installed in the two rectangular through slots 14 for plastic shaping the pipe to be processed in the horizontal direction. A straight notch 19 parallel and communicating with the rectangular through slot 14 is provided on the upper surface of the horizontal plate. A set screw 17 for fixing the side pressing block 12 is provided on the straight notch 19; scale marks 23 are provided on the upper surface of the horizontal plate of each rectangular through slot 14 for accurately positioning the moving position of the side pressing block 12 relative to the axial direction of the pipe to be processed. A transition fillet 25 with a radius of 1 mm is provided at the edge of the pressing surface of the side pressing block 12 for forming a smooth transition between the processed surface and the unprocessed surface of the pipe to be processed, ensuring the beauty and smooth transition of the shell shape of the thin-walled hollow pipe after plastic shaping; side mounting holes 15 are respectively provided at the positions corresponding to the two side through holes on the vertical plate.

[0045] Threaded holes 18 are provided at the positions corresponding to the straight notch 19 on the two side pressing blocks 12. When the side pressing block 12 moves along the rectangular through slot 14 to a fixed position, the set screw 17 and the threaded hole 18 cooperate with each other to fix the side pressing block 12. By adjusting the positional relationship between the side pressing block 12 and the rectangular through slot 14, the compressed length of the pipe to be processed in the horizontal direction is adjusted; side mounting holes 15 are respectively provided at the positions corresponding to the two side through holes on the vertical plate.

[0046] Counterbores are provided at both ends of the two side through holes. External threads are provided at the positions corresponding to the counterbores on the side guide rod 8; as Figure 7 shown, after the side guide rod 8 passes through the side through hole, its two ends are fixed to the base 1 by nuts cooperating with the external threads, and the nuts are embedded in the corresponding counterbores; limit nuts 20 are provided at both ends of the two side guide rods 8 for forming a stroke limit for the left-side module 9 and the right-side module 10 sleeved at both ends of the side guide rod 8.

[0047] Chamfers 26 with a size of 1.5 mm are provided at the edges of both sides of the base 1 opposite to the left-side module 9 and the right-side module 10 for closely fitting the lower horizontal surfaces of the base 1 and the left-side module 9 and the right-side module 10.

[0048] Side compression springs 16 are sleeved on the side guide rod 8 between the left-side module 9 and the base 1 and between the base 1 and the right-side module 10 for providing a return thrust for the left-side module 9 and the right-side module 10.

[0049] This embodiment also proposes a shaping method for a thin-walled hollow tube for fixing an antimony metal ball. Using the shaping device for the thin-walled hollow tube for fixing the antimony metal ball described above, it includes the following steps:

[0050] S1. Place the tube to be processed in the arc-shaped groove 3 on the base 1;

[0051] S2. Apply a vertically downward pressure to the upper pressing block 4 through an external pressing device, so that the upper pressing block 4 moves vertically downward along the two upper guide rods 5, and complete the vertical shaping of the tube to be processed through the shaping table 7. Then, the upper pressing block 4 is reset by the upper compression springs 6 on the two upper guide rods 5;

[0052] S3. Place the antimony metal ball at a preset position inside the tube to be processed, and adjust the positions of the respective side pressing blocks 12 on the left-side module 9 and the right-side module 10 to move them to the corresponding positions where the tube to be processed needs to be processed;

[0053] S4. Apply a horizontally inward pressure to the left-side module 9 and the right-side module 10 simultaneously through an external pressing device, so that the left-side module 9 and the right-side module 10 slide inward along the two ends of the side guide rods 8 respectively, and fix the antimony metal ball inside the tube to be processed through the respective side pressing blocks 12, completing the horizontal shaping of the tube to be processed. Then, the left-side module 9 and the right-side module 10 are reset by the side compression springs 16 on the two side guide rods 8, thus completing the shaping of the thin-walled hollow tube.

Claims

1. A plastic shaping device for a thin-walled hollow tube for fixing an antimony metal ball, characterized in that: It includes a base (1), an upper pressing component and a side pressing component; In the middle of the upper surface of the base (1), a transverse boss (2) is provided. On both sides of the transverse boss (2), side through holes running through both ends horizontally are symmetrically opened on the base (1). In the middle of the transverse boss (2), an arc-shaped groove (3) is longitudinally opened for placing the pipe to be processed; The upper pressing module includes an upper pressing block (4) and two upper guide rods (5) fixed on the transverse boss (2) and located on both sides of the arc-shaped groove (3). The upper pressing block (4) is movably connected to the tops of the two upper guide rods (5). Upper compression springs (6) are sleeved on both of the upper guide rods (5) between the upper pressing block (4) and the transverse boss (2) to provide a return thrust for the upper pressing block (4). At the position corresponding to the arc-shaped groove (3) on the lower surface of the upper pressing block (4), a shaping table (7) is provided for shaping the pipe to be processed in the vertical direction; The side pressing component includes two side guide rods (8), a left-side module (9) and a right-side module (10) symmetrically distributed on both sides of the base (1) along the arc-shaped groove (3). The left-side module (9) and the right-side module (10) have the same structure and both include a mounting plate (11) formed by a horizontally connected transverse plate and a vertically connected vertical plate and two side pressing blocks (12). The lower surface of the transverse plate is in sliding contact with the upper surface of the base (1). At the position corresponding to the transverse boss (2) in the middle of the transverse plate, a groove (13) running through its end and upper and lower surfaces is opened. On the end parts of the transverse plate on both sides of the groove (13), rectangular through grooves (14) running through horizontally are provided. The two side pressing blocks (12) are respectively slidably installed in the two rectangular through grooves (14), and the sliding direction is parallel to the axis of the pipe to be processed. The two side pressing blocks (12) are used for shaping the pipe to be processed in the horizontal direction. Side mounting holes (15) are respectively opened at the positions corresponding to the two side through holes on the vertical plate; The two side guide rods (8) respectively pass through the two side through holes to be connected to the base (1). The left-side module (9) and the right-side module (10) are respectively sleeved on both ends of the side guide rods (8) through the two side mounting holes (15). Side compression springs (16) are sleeved on the side guide rods (8) between the left-side module (9) and the base (1) and between the base (1) and the right-side module (10) respectively to provide return thrusts for the left-side module (9) and the right-side module (10).

2. The shaping device for a thin-walled hollow pipe for fixing an antimony metal ball according to claim 1, characterized in that: On the upper surface of the transverse plate, a straight notch (19) communicating with the rectangular through groove (14) is provided. The length direction of the straight notch (19) is parallel to the axis of the pipe to be processed. On the straight notch (19), a set screw (17) for fixing the side pressing block (12) is provided; A threaded hole (18) is provided at a position on the side pressing block (12) corresponding to the straight slot (19). When the side pressing block (12) moves along the rectangular through slot (14) to a fixed position, the set screw (17) cooperates with the threaded hole (18) to fix the side pressing block (12). By adjusting the positional relationship between the side pressing block (12) and the rectangular through slot (14), the compressed length of the pipe to be processed in the horizontal direction is adjusted.

3. The plastic shaping device for a thin-walled hollow pipe for fixing antimony metal balls according to claim 2, characterized in that: Limit nuts (20) are provided at both ends of the two side guide rods (8) for forming a stroke limit for the left placement module (9) and the right placement module (10) sleeved at both ends of the side guide rods (8).

4. The plastic shaping device for a thin-walled hollow pipe for fixing antimony metal balls according to claim 3, characterized in that: The upper pressing block (4) is a concave pressing block, and two upper through holes (21) are opened on the concave bottom surface thereof. The upper pressing block (4) is movably connected to the tops of the two upper guide rods (5) through the two upper through holes (21); Two upper mounting holes (22) are provided at positions on the transverse boss (2) corresponding to the two upper through holes (21), and the bottoms of the two upper guide rods (5) are respectively fixed in the two upper mounting holes (22).

5. The plastic shaping device for the thin-walled hollow tube for fixing antimony metal balls according to claim 4, characterized in that: Counterbores are provided at both ends of the two side through holes, and external threads are provided at positions on the side guide rods (8) corresponding to the counterbores; After the side guide rods (8) pass through the side through holes, the two ends thereof are fixed to the base (1) by nuts cooperating with the external threads, and the nuts are embedded in the corresponding counterbores.

6. The plastic shaping device for a thin-walled hollow pipe for fixing antimony metal balls according to claim 5, characterized in that: Scale marks (23) are provided on the upper surface of the transverse plate of each rectangular through slot (14) for accurately positioning the moving position of the side pressing block (12) relative to the axis of the pipe to be processed.

7. The plastic shaping device for a thin-walled hollow pipe for fixing antimony metal balls according to claim 6, characterized in that: An alignment scale (24) is provided on the upper surface of the base (1) for calibrating the axial position of the pipe to be processed.

8. The plastic shaping device for a thin-walled hollow pipe for fixing antimony metal balls according to claim 7, characterized in that: A transition fillet (25) is provided at the edge of the pressing surface of the side pressing block (12) for forming a smooth transition between the processed surface and the unprocessed surface of the pipe to be processed.

9. The plastic shaping device for a thin-walled hollow pipe for fixing antimony metal balls according to claim 8, characterized in that: Chamfers (26) are provided at the edges of both sides of the upper end of the base (1) opposite to the left placement module (9) and the right placement module (10).

10. A shaping method for a thin-walled hollow tube for fixing an antimony metal ball, using the shaping device for a thin-walled hollow tube for fixing an antimony metal ball according to any one of claims 1-9, characterized in that, Including the following steps: S1. Place the pipe to be processed in the arc-shaped groove (3) on the base (1); S2. Apply a vertically downward pressure to the upper pressing block (4) through an external pressing device, so that the upper pressing block (4) moves vertically downward along the two upper guide rods (5), complete the vertical shaping of the pipe to be processed through the shaping table (7), and then return the upper pressing block (4) through the upper compression springs (6) on the two upper guide rods (5). S3. Place the antimony metal ball at a preset position inside the tube to be processed, and adjust the positions of the respective side pressing blocks (12) on the left placement module (9) and the right placement module (10) so that they move to the corresponding positions required for processing the tube to be processed. S4. Apply horizontal inward pressure to the left placement module (9) and the right placement module (10) simultaneously through an external pressing device, so that the left placement module (9) and the right placement module (10) slide inward along the two ends of the side guide rod (8) respectively. Fix the antimony metal ball inside the tube to be processed through the respective side pressing blocks (12) to complete the shaping of the tube to be processed in the horizontal direction. Then, use the side compression springs (16) on the two side guide rods (8) to return the left placement module (9) and the right placement module (10) to their original positions, thereby completing the shaping of the thin-walled hollow tube.

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