A positioning device for machining the center seam of a pen tip

Abstract

This invention discloses a positioning device for pen tip seam processing, relating to the field of pen tip processing. It includes a seam processing table with a positioning groove. A tray for placing a pen tip prototype is mounted on the seam processing table via a tray lifting assembly. Both the seam processing table and the tray have infeed grooves. Side grooves are provided on the walls around the positioning groove. Clamping plates are slidably mounted within the side grooves. The clamping plates are connected to the tray via a linkage assembly. The tray lifting assembly drives the tray to rise and fall, facilitating the placement and removal of the pen tip prototype from the positioning groove. Furthermore, the linkage assembly connects multiple clamping plates to the tray, enabling the clamping plates to clamp, center, and release the pen tip prototype on the tray accordingly as the tray rises and falls, ensuring the accuracy of the pen tip seam processing.

Description

Technical Field

[0001] This invention belongs to the field of pen tip processing, and specifically relates to a positioning device for processing the center seam of a pen tip. Background Technology

[0002] A fountain pen consists of four parts: nib, ink cartridge, grip, and barrel. The nib directly affects the writing experience, making its manufacturing quality particularly important. Nib manufacturing typically involves stamping a metal sheet into the basic nib shape, welding an iridium tip onto the nib, and machining a breather hole and center seam. Finally, the nib is ground and polished. If the center seam deviates significantly from the nib's center line, it will cause asymmetry between the metal sheets and the iridium tips on both sides of the nib, affecting both the nib's appearance and the writing experience.

[0003] Currently, when machining the center seam of a pen tip, the basic pen tip shape is typically placed into a positioning groove on the machining table that matches its shape. The machining table has a feed groove connected to the positioning groove for the cutting tool to enter, allowing the tool to cut the center seam on the pen tip within the positioning groove. However, using a positioning groove to position the pen tip is not only inconvenient for inserting and removing the pen tip, but the size of the positioning groove must also be slightly larger than the size of the pen tip, leading to an increase in the error in the center seam machining position. Summary of the Invention

[0004] The purpose of this invention is to provide a positioning device for the processing of the center seam of a pen tip, so as to solve the above-mentioned defects caused by the prior art.

[0005] A positioning device for machining the center seam of a pen tip includes a center seam machining table with a positioning groove. A tray for placing a pen tip prototype is mounted on the center seam machining table via a tray lifting assembly. Both the center seam machining table and the tray are provided with infeed grooves. Side grooves are provided on the groove walls around the positioning groove. A clamping plate is slidably disposed in the side groove. The clamping plate and the tray are connected by a linkage assembly. While the tray is driven to move downward into the positioning groove by the tray lifting assembly, the tray, with the aid of the linkage assembly, drives the clamping plate to clamp the pen tip prototype.

[0006] Preferably, the linkage assembly includes a hinge linkage rod and a translational sliding shaft. The hinge linkage rod and the clamping plate are rotatably disposed in the side groove via the translational sliding shaft, and the end of the translational sliding shaft is slidably disposed on the groove wall of the positioning groove. The pallet is hinged to the hinge linkage rod. While the pallet is driven to rise and fall by the pallet lifting assembly, the clamping plate is driven to move closer to and away from the pallet by means of the hinge linkage rod and the translational sliding shaft.

[0007] Preferably, the hinge linkage rod is provided with a cooperating protrusion extending to the lower part of the clamping plate, and a translation guide block is provided in the side groove. The translation guide block is located below the clamping plate. The clamping plate is supported on the translation guide block as the hinge linkage rod swings downward, so that the clamping plate can translate along the translation guide block.

[0008] Preferably, the bottom of the pallet is provided with a lifting play component, which is used to adjust the distance between the hinge linkage rod and the pallet in a direction perpendicular to the pallet. The pallet is connected to the pallet lifting component and the hinge linkage rod through the lifting play component.

[0009] The center seam processing table is provided with a clearance groove that connects to the positioning groove and allows the lifting clearance component to enter. The lifting clearance component and the clearance groove are used to allow the hinge linkage rod to continue to swing downward after the support plate descends to contact the bottom wall of the positioning groove, so that the clamp on the translation guide block can move closer to the pen tip prototype on the support plate in a translational manner.

[0010] Preferably, the lifting and lowering vacancy assembly includes a telescopic link and a linkage plate. The linkage plate is connected to the pallet through a plurality of telescopic links with telescopic functions. A plurality of hinged linkage rods are all hinged to the linkage plate. The pallet lifting assembly is located below the linkage plate and is connected to the linkage plate.

[0011] Preferably, the hinge linkage rod is provided on both sides of the clamping plate, and the side groove has a jump-stop flat hole for the clamping plate to pass through and a clearance vertical hole for the hinge linkage rod to swing. The jump-stop flat hole is located between the clearance vertical holes on both sides.

[0012] The advantages of this invention are:

[0013] 1. The present invention uses a pallet lifting assembly to drive the pallet to rise and fall, so as to facilitate the placement and removal of the pen tip prototype into the positioning slot.

[0014] 2. The present invention connects multiple clamping plates and a support plate through a linkage component, thereby enabling the clamping plates to clamp, center, and release the pen tip prototype on the support plate as the support plate descends and rises, thus ensuring the precision of the pen tip seam processing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the linkage component of the present invention.

[0017] Figure 3This is a schematic diagram of the linkage plate of the present invention.

[0018] Figure 4 This is a partial view of the lifting virtual positioning component of the present invention.

[0019] The labels in the diagram represent the following:

[0020] 1-Positioning groove; 2-Center seam processing table; 3-Plate lifting assembly; 4-Plate; 5-Infeed groove; 6-Side groove; 7-Clamping plate; 8-Linkage assembly; 9-Cooperating protrusion; 10-Translation guide block; 11-Lifting play-off assembly;

[0021] 601 - Anti-jump flat hole; 602 - Yield vertical hole;

[0022] 801 - Hinged linkage rod; 802 - Translational sliding shaft;

[0023] 1101-Telescopic linkage; 1102-Linkage plate. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0025] like Figures 1 to 4 As shown, a positioning device for processing the center seam of a pen tip includes a center seam processing table 2 with a positioning groove 1 and a cutting groove 5. A tray 4 for placing a pen tip prototype is provided on the center seam processing table 2 via a tray lifting assembly 3. Side grooves 6 are provided on the groove walls around the positioning groove 1. Clamping plates 7 are slidably arranged in the side grooves 6. The clamping plates 7 and the tray 4 are connected by a linkage assembly 8. While the tray 4 is driven by the tray lifting assembly 3 to move downward into the positioning groove 1, the tray 4 drives the clamping plates 7 to clamp the pen tip prototype with the help of the linkage assembly 8.

[0026] The tray lifting assembly 3 drives the tray 4 to rise and fall, facilitating the placement and removal of the pen tip prototype from the positioning slot 1. Furthermore, multiple clamping plates 7 are connected to the tray 4 via a linkage assembly 8, enabling the clamping plates 7 to clamp, center, and release the pen tip prototype on the tray 4 as the tray 4 rises and falls, ensuring the precision of the pen tip seam processing and facilitating the placement and removal of the pen tip.

[0027] The linkage component 8 includes a hinge linkage rod 801 and a translational sliding shaft 802. Both the hinge linkage rod 801 and the clamping plate 7 have shaft holes at one end. The hinge linkage rod 801 and the clamping plate 7 are connected by the translational sliding shaft 802, which is rotatably inserted into the shaft hole. The end of the translational sliding shaft 802 is slidably disposed on the groove wall of the positioning groove 1. The support plate 4 is hinged to the hinge linkage rod 801. While the support plate 4 is driven to rise and fall by the support plate lifting component 3, the clamping plate 7 is driven to move closer to and away from the support plate 4 by means of the hinge linkage rod 801 and the translational sliding shaft 802.

[0028] A coordinating protrusion 9 is provided on the hinge linkage rod 801, extending to the lower part of the clamping plate 7. A translation guide block 10 is provided in the side groove 6. The translation guide block 10 is located below the clamping plate 7. The clamping plate 7 is supported on the translation guide block 10 as the hinge linkage rod 801 swings downward, so that the clamping plate 7 can translate along the translation guide block 10.

[0029] When the pallet lifting assembly 3 drives the pallet 4 to rise, the hinge linkage rod 801 is driven by the top plate to swing upward. At the same time, the hinge linkage rod 801, with the help of the cooperating protrusion 9, lifts the clamping plate 7 on the translation guide block 10 and drives the clamping plate 7 to swing upward together. As the clamping plate 7 swings downward with the hinge linkage rod 801, the clamping plate 7 falls on the translation guide block 10, so that the clamping plate 7 can continue to move downward with the hinge linkage rod 801 and translate into the positioning groove 1 to achieve clamping of the pen tip prototype.

[0030] The purpose of setting the cooperating protrusion 9 is to prevent the hinge linkage rod 801 from swinging upward to the same plane as the clamping plate 7, and then the clamping plate 7 moves back into the positioning groove 1 as the hinge linkage rod 801 continues to swing upward, thus preventing the clamping plate 7 from clamping the rising support plate 4.

[0031] The bottom of the pallet 4 is provided with a lifting doubling component 11. The lifting doubling component 11 is used to adjust the distance between the hinge linkage rod 801 and the pallet 4 in a direction perpendicular to the pallet 4. The pallet 4 is connected to the pallet lifting component 3 and the hinge linkage rod 801 through the lifting doubling component 11.

[0032] The lifting and lowering virtual component 11 is used to enable the hinge linkage rod 801 to continue to swing downward after the support plate 4 descends to abut the groove wall of the positioning groove 1, so that the clamping plate 7 on the translation guide block 10 can move closer to the pen tip prototype on the support plate 4 in a translational manner.

[0033] The lifting and lowering component 11 includes a telescopic link 1101 and a linkage plate 1102. The linkage plate 1102 is connected to the pallet 4 through several telescopic links 1101 with telescopic function. Several hinged linkage rods 801 are all hinged to the linkage plate 1102. The pallet lifting component 3 is located below the linkage plate 1102 and is connected to the linkage plate 1102.

[0034] When the support plate 4 descends to touch the bottom wall of the positioning groove 1, the clamping plate 7 and the pen tip prototype on the support plate 4 are at the same height. When the hinge linkage rod 801 continues to swing downward, the hinge linkage rod 801 drives the clamping plate 7 to move closer to the pen tip prototype by means of the translation sliding shaft 802, so as to improve the alignment accuracy between the clamping plate 7 and the pen tip prototype and improve stability.

[0035] The clamping plate 7 passes through the anti-jump flat hole 601 and the clearance vertical hole 602 for the hinge linkage rod 801 to swing. The anti-jump flat hole 601 is located between the clearance vertical holes 602 on both sides. The function of the anti-jump flat hole 601 is to prevent the clamping plate 7 from jumping in the vertical direction, and the function of the clearance vertical hole 602 is to provide sufficient space for the movement of the hinge linkage rod 801.

[0036] The pallet lifting assembly 3 generally includes a motor, a lead screw, and several guide columns. One end of each guide column is located at the bottom of the pallet 4. The center seam processing table 2 is provided with an internal threaded hole for installing the lead screw and several guide holes. The guide holes are connected to the positioning groove 1 and are slidably connected to the corresponding guide columns. The lead screw is connected to the positioning groove 1 and is rotatably connected to the bottom of the pallet 4. The motor is located on the center seam processing table 2 and is connected to the lead screw.

[0037] The working principle of this invention is as follows:

[0038] The pallet lifting assembly 3 supports the pallet 4 with the help of the linkage plate 1102 and multiple telescopic linkages 1101. When the linkage plate 1102 is driven to rise, multiple hinged linkages 801 connected to the linkage plate 1102 swing upward. The hinged linkages 801 drive the clamping plate 7 to release the pen tip prototype by means of the translation sliding shaft 802. When the telescopic linkages 1101 change from the extended state to the retracted state where they can no longer retract, the linkage plate 1102 drives the top plate to rise with the help of multiple retracted telescopic linkages 1101. During this process, the hinged linkages 801 lift the clamping plate 7 on the translation guide block 10 by means of the cooperating protrusion 9 and drive the clamping plate 7 to swing upward together, so that the pen tip with the center seam processed on the pallet 4 is exposed in the positioning groove 1, so as to facilitate the transfer of the pen tip and the placement of the pen tip to be processed later. When the pen tip to be processed is placed on the tray 4, the tray 4 is driven down to contact the bottom wall of the positioning groove 1. At this time, the clamping plate 7 is placed on the translation guide block 10. When the linkage plate 1102 is driven by the tray lifting assembly 3 to continue moving into the clearance groove 12 below the tray 4, the telescopic linkage 1101 extends. At the same time, multiple hinged linkage rods 801 drive multiple clamping plates 7 to move synchronously along the top of the corresponding translation guide block 10 towards the pen tip prototype on the tray 4, thereby achieving the clamping and centering of the pen tip prototype.

[0039] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A positioning device for machining the center seam of a pen tip, comprising a center seam machining table (2) provided with a positioning groove (1), characterized in that, The center seam processing table (2) is equipped with a tray (4) for placing the pen tip prototype through a tray lifting assembly. Both the center seam processing table (2) and the tray (4) are provided with a cutting groove (5). Side grooves (6) are provided on the groove walls around the positioning groove (1). A clamping plate (7) is slidably arranged in the side groove (6). The clamping plate (7) is connected to the tray (4) through a linkage assembly (8). While the tray (4) is driven by the tray lifting assembly to move downward into the positioning groove (1), the tray (4) uses the linkage assembly (8) to drive the clamping plate (7) to clamp the pen tip prototype. The linkage component (8) includes a hinged linkage rod (801) and a translational sliding shaft (802). The bottom of the pallet (4) is provided with a lifting doubling component (11). The lifting doubling component (11) is used to adjust the distance between the hinge linkage rod (801) and the pallet (4) in a direction perpendicular to the pallet (4). The pallet (4) is connected to the pallet lifting component and the hinge linkage rod (801) through the lifting doubling component (11). The lifting and lowering virtual component (11) is used to enable the hinge linkage rod (801) to continue to swing downward after the pallet (4) descends to abut against the bottom wall of the positioning groove (1).

2. The positioning device for processing the center seam of a pen tip according to claim 1, characterized in that, The hinge linkage rod (801) and the clamping plate (7) are rotatably disposed in the side groove (6) via the translation sliding shaft (802), and the end of the translation sliding shaft (802) is slidably disposed on the groove wall of the positioning groove (1). The pallet (4) is hinged to the hinge linkage rod (801). While the pallet (4) is driven to rise and fall by the pallet lifting assembly, the clamping plate (7) is driven to move closer to and away from the pallet (4) by means of the hinge linkage rod (801) and the translation sliding shaft (802).

3. A positioning device for processing the center seam of a pen tip according to claim 2, characterized in that, The hinge linkage rod (801) is provided with a cooperating protrusion (9) extending to the lower part of the clamping plate (7). A translation guide block (10) is provided in the side groove (6). The translation guide block (10) is located below the clamping plate (7). The clamping plate (7) is supported on the translation guide block (10) as the hinge linkage rod (801) swings downward, so that the clamping plate (7) can translate along the translation guide block (10).

4. A positioning device for processing the center seam of a pen tip according to claim 1, characterized in that, The lifting and lowering dummy position assembly (11) includes a telescopic link (1101) and a linkage plate (1102). The linkage plate (1102) is connected to the pallet (4) through several telescopic links (1101) with telescopic function. Several hinged linkage rods (801) are all hinged to the linkage plate (1102). The pallet lifting assembly is located below the linkage plate (1102) and is connected to the linkage plate (1102).

5. A positioning device for processing the center seam of a pen tip according to claim 2, characterized in that, The clamping plate (7) is provided with the hinge linkage rod (801) on both sides. The side groove (6) has a jump-stop flat hole for the clamping plate (7) to pass through and a clearance vertical hole for the hinge linkage rod (801) to swing. The jump-stop flat hole is located between the clearance vertical holes on both sides.

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