A cutting tool for machining low-temperature and oil-resistant rubber seals

Abstract

This utility model discloses a low-temperature resistant and oil-resistant rubber sealing ring processing tool, including a stamping tool holder. The lower end surface of the stamping tool holder is provided with two sets of annular positioning grooves, one inner and one outer. An outer ring blade is snapped into the outer annular positioning groove of the stamping tool holder, and an inner ring blade is snapped into the inner annular positioning groove of the stamping tool holder. A variable diameter positioning pin is slidably inserted into the inner surface of the stamping tool holder. The upper ends of the outer and inner ring blades are provided with variable diameter insertion ports. The outer surface of the variable diameter positioning pin is slidably inserted into the inner surface of the outer and inner ring blades. A nut is threadedly connected to the outer end of the variable diameter positioning pin. The variable diameter positioning pin is inserted and positioned, and the outer end is locked and fixed by the nut. It can compress and fix the blade. When disassembling, the nut and the variable diameter positioning pin can be removed to replace the blade. The inner ring extrusion assembly can be sleeved and installed on the outside of the inner ring blade. It is detachable and easy to assemble and use.

Description

Technical Field

[0001] This utility model relates to the field of cutting tools for processing rubber sealing rings, and more specifically, to a cutting tool for processing low-temperature and oil-resistant rubber sealing rings. Background Technology

[0002] Currently, the processing of sealing rings generally adopts die stamping. Different sizes of dies are designed according to different sealing rings. The die consists of a punch and a die. During processing, the punch and die are fixed on a punch press or manual stamping equipment. The shearing force between the punch and die causes the sealing material to deform and move against each other to shear the sealing material to form a sealing ring. The sealing ring is generally made of non-metallic material with high toughness. It is prone to collapse during the stamping process. The friction and impact between the punch and die cause significant wear on the punch cutting edge. In the Chinese patented sealing ring processing tool (patent number: CN201792370U), the device includes a tool holder with an annular outer blade and an inner blade on the tool holder. The outer blade and the inner blade are located on the same axis, and the sides of the outer blade and the inner blade are provided with inlet ports. The structure is simple and easy to operate, and the sealing ring can be processed in one go, reducing processing steps, reducing waste, and saving costs. It is suitable for the needs of small-batch sealing ring production. However, after the sealing ring processing tool cuts the sealing ring raw material, the cut sealing ring body is easy to get stuck in the gap between the outer blade and the inner blade, which is troublesome to remove, wastes manpower, and affects the processing efficiency of the sealing ring. In addition, it is not disassembled, difficult to repair, and has high operating costs. In the aforementioned patent, the inner and outer ring blades are fixed to the lower surface of the blade top plate by screws. The screw fixation is simple and not stable enough. Four screws need to be removed to remove the inner and outer ring blades, which is inconvenient to disassemble and install. In addition, the inner end stripping component is integrated with the blade plate, which is also inconvenient to assemble and disassemble. Utility Model Content

[0003] To address the problems existing in the prior art, the purpose of this utility model is to provide a low-temperature resistant and oil-resistant rubber sealing ring processing tool. The inner and outer ring blades are snapped into the stamping tool holder and positioned by a variable diameter locating pin. The outer end is locked and fixed by a nut, which can compress and fix the blade. The blade can be replaced by removing the nut and the variable diameter locating pin. The inner ring extrusion and stripping component can be sleeved and installed on the outside of the inner ring blade. It is detachable and easy to assemble and use.

[0004] To solve the above problems, the present invention adopts the following technical solution.

[0005] A tool for machining low-temperature and oil-resistant rubber sealing rings includes a stamping tool holder. The lower end surface of the stamping tool holder has two sets of annular positioning grooves, inner and outer. An outer ring blade is engaged with the outer annular positioning groove of the stamping tool holder, and an inner ring blade is engaged with the inner annular positioning groove of the stamping tool holder. A variable-diameter positioning pin is slidably inserted into the inner surface of the stamping tool holder. The upper ends of the outer and inner ring blades have variable-diameter insertion openings. The outer surface of the variable-diameter positioning pin slidably inserts into the inner surfaces of the outer and inner ring blades. The outer end surface of the variable-diameter positioning pin is connected by a thread. A nut is attached, and a spring is pressed onto the lower surface of the stamping cutter holder. A mounting ring is welded and fixed to the lower surface of the spring. The mounting ring is sleeved on the outer surface of the inner ring blade. A compression ring is fixed to the lower surface of the mounting ring by screws. The inner and outer ring blades are snapped into the stamping cutter holder and positioned by a variable diameter locating pin. The outer end is locked and fixed by a nut. It can compress and fix the blade. The blade can be replaced by removing the nut and the variable diameter locating pin. The inner ring compression stripping assembly can be sleeved and installed on the outside of the inner ring blade. It is detachable and easy to assemble and use.

[0006] Furthermore, the outer end of the nut is provided with an outer ring protrusion, which is engaged with the inner surface of the stamping tool holder.

[0007] Furthermore, the outer surface of the extrusion ring slides against the inner surfaces of the outer ring blade and the inner ring blade.

[0008] Furthermore, the variable diameter locating pin has a variable diameter round pin structure, and its outer end is provided with a threaded protrusion. The nut is connected to the outer surface of the threaded protrusion by thread.

[0009] Furthermore, a first positioning block is provided on the outer surface of the outer ring blade, and the outer surface of the first positioning block is engaged with the lower outer inner surface of the stamping tool holder.

[0010] Furthermore, a second positioning block is provided on the inner end surface of the inner ring blade, and the outer surface of the second positioning block is engaged with the inner end surface of the lower end of the stamping tool holder.

[0011] Furthermore, the outer surfaces of the outer and inner ring blades are tightly fitted into the annular positioning groove of the stamping tool holder.

[0012] Compared with existing technologies, the advantages of this utility model are: (1) The inner ring blade and the outer ring blade are snapped into the stamping tool holder and positioned by the variable diameter positioning pin. The outer end is locked by the nut. It can squeeze and fix the blade. When disassembling, the nut and the variable diameter positioning pin can be removed to replace the blade. The inner ring extrusion assembly can be installed on the outside of the inner ring blade. It is detachable and easy to assemble and use. Attached Figure Description

[0013] Figure 1 This is a first schematic diagram of the overall structure of this utility model; Figure 2 This is a second schematic diagram of the overall structure of this utility model; Figure 3 This is a bottom view of the overall structure of this utility model; Figure 4 This is a schematic cross-sectional view of the overall structure of this utility model; Figure 5 This is a partial structural diagram of the variable diameter locating pin of this utility model.

[0014] Explanation of the labels in the diagram: 1. Stamping tool holder, 2. Annular positioning groove, 3. Outer ring blade, 4. Inner ring blade, 6. Variable diameter positioning groove, 7. Nut, 8. Spring, 9. Mounting ring, 10. Extrusion ring, 11. Screw, 60. Threaded protrusion, 12. First positioning block, 12. Second positioning block. Detailed Implementation

[0015] 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.

[0016] Example 1: Please refer to Figure 1-5 A tool for machining low-temperature and oil-resistant rubber sealing rings includes a stamping tool holder 1. The lower end surface of the stamping tool holder 1 has two sets of annular positioning grooves 2, one inner and one outer. An outer ring blade 3 is snapped into the outer annular positioning groove 2 of the stamping tool holder 1, and an inner ring blade 4 is snapped into the inner annular positioning groove 2 of the stamping tool holder 1. A variable diameter positioning pin 6 is slidably inserted into the inner surface of the stamping tool holder 1. The upper ends of the outer ring blade 3 and the inner ring blade 4 are provided with variable diameter insertion ports. The outer surface of the variable diameter positioning pin 6 slidably inserts into the inner surfaces of the outer ring blade 3 and the inner ring blade 4. The outer end surface of the variable diameter positioning pin 6 is connected by a screw... The stamping cutter holder 1 is connected with a nut 7. A spring 8 is pressed onto the lower surface of the stamping cutter holder 1. A mounting ring 9 is welded and fixed to the lower surface of the spring 8. The mounting ring is sleeved on the outer surface of the inner ring blade 4. A pressing ring 10 is fixed to the lower surface of the mounting ring 9 by a screw 11. The inner ring blade and the outer ring blade are snapped into the stamping cutter holder and positioned by a variable diameter positioning pin. The outer end is locked and fixed by a nut. It can press and fix the blade. When disassembling, the nut and the variable diameter positioning pin can be removed to replace the blade. The inner ring pressing stripping component can be sleeved and installed on the outside of the inner ring blade. It is detachable and easy to assemble and use. The outer end of the nut 7 is provided with an outer ring protrusion, which is engaged with the inner surface of the stamping cutter holder 1; it can be locked in place when locked, and the locking is firm, the support is stable, and it will not slide up and down; The outer surface of the extrusion ring 10 slides against the inner surfaces of the outer ring blade 3 and the inner ring blade 4; the extrusion is stable, and the extrusion ring 10 can fit against the outer ring blade 3 and the inner ring blade 4. When the sealing ring is punched out, the ring material can be ejected. The reducing locating pin 6 has a reducing round pin structure, and its outer end is provided with a threaded protrusion 60. The nut 7 is connected to the outer surface of the threaded protrusion 60 by thread; the installation is stable. The outer surface of the outer ring blade 3 is provided with a first positioning block 12, and the outer surface of the first positioning block 12 is engaged with the inner surface of the lower outer side of the stamping tool holder 1; during installation, the outer ring blade 3 can be engaged into the inner side of the stamping tool holder 1 through the first positioning block 12, and it can be positioned and installed. The inner end surface of the inner ring blade 4 is provided with a second positioning block 13, and the outer surface of the second positioning block 13 is engaged with the inner end surface of the lower end of the stamping tool holder 1. During installation, the inner ring blade 4 can be engaged into the inner side of the stamping tool holder 1 through the second positioning block 13, and it can be positioned and installed. In use, the lower end surface of the stamping cutter holder 1 is provided with two sets of annular positioning grooves 2, one inner and one outer. An outer ring blade 3 is snapped into the outer annular positioning groove 2 of the stamping cutter holder 1, and an inner ring blade 4 is snapped into the inner annular positioning groove 2 of the stamping cutter holder 1. The outer surfaces of the outer ring blade 3 and the inner ring blade 4 are tightly fitted to the annular positioning groove 2 of the stamping cutter holder 1; the fit is tight and the installation is stable. The inner surface of the stamping tool holder 1 is slidably inserted with a variable diameter positioning pin 6. The upper ends of the outer ring blade 3 and the inner ring blade 4 are provided with variable diameter insertion ports. The outer surface of the variable diameter positioning pin 6 is slidably inserted into the inner surface of the outer ring blade 3 and the inner ring blade 4. The outer end surface of the variable diameter positioning pin 6 is connected to a nut 7 by a thread, which is easy to install. The outer end of the nut 7 is provided with an outer ring protrusion, which is engaged with the inner surface of the stamping tool holder 1. When locked, it can be locked in place, which is secure and stable, and will not slide up and down. After locking, it can tightly fix the inner ring blade 4 and the outer ring blade 3. It can be tightened and fixed, which is secure and convenient. After removing the nut 7, the variable diameter positioning pin 6 can be removed, and the inner ring blade 4 and the outer ring blade 3 can be disassembled, which is convenient. A spring 8 is pressed onto the lower surface of the stamping cutter holder 1. A mounting ring 9 is welded and fixed to the lower surface of the spring 8. The mounting ring is sleeved on the outer surface of the inner ring blade 4. A pressing ring 10 is fixed to the lower surface of the mounting ring 9 by screws 11. The pressing ring 10 and the mounting ring 9 are easy to install and can be installed together with the inner ring blade 4 at the lower end of the stamping cutter holder 1. After the inner ring blade 4 is removed, it can be pulled down to disassemble the pressing ring 10, the spring 8 and the mounting ring 9. The installation and disassembly are convenient. When in use, the stamping cutter 1 descends to press the outer ring blade 3 and inner ring blade 4 to descend, and can press and cut the rubber ring downwards. After it rises, the spring 8 presses the mounting ring 9 to descend, which can drive the extrusion ring 10 to extrude the rubber ring downwards, so that it will not get stuck.

Claims

1. A tool for machining low-temperature resistant and oil-resistant rubber sealing rings, comprising a stamped tool holder (1), characterized in that: The lower end surface of the stamping cutter holder (1) is provided with two sets of annular positioning grooves (2), one inner and one outer. An outer ring blade (3) is snapped into the outer annular positioning groove (2) of the stamping cutter holder (1), and an inner ring blade (4) is snapped into the inner annular positioning groove (2) of the stamping cutter holder (1). A variable diameter positioning pin (6) is slidably inserted into the inner surface of the stamping cutter holder (1). The upper ends of the outer ring blade (3) and the inner ring blade (4) are provided with variable diameter insertion ports, and the variable diameter positioning pins are... (6) The outer surface of the variable diameter positioning pin (6) slides through the inner surface of the outer ring blade (3) and the inner ring blade (4). The outer end surface of the variable diameter positioning pin (6) is connected to the nut (7) by thread. The lower surface of the stamping tool holder (1) is provided with a spring (8). The lower surface of the spring (8) is welded and fixed with an installation ring (9). The installation ring is sleeved on the outer surface of the inner ring blade (4). The lower surface of the installation ring (9) is fixed with a compression ring (10) by screws (11).

2. The cutting tool for machining low-temperature resistant and oil-resistant rubber sealing rings according to claim 1, characterized in that: The outer end of the nut (7) is provided with an outer ring protrusion, which is engaged with the inner surface of the stamping tool holder (1).

3. The cutting tool for machining low-temperature resistant and oil-resistant rubber sealing rings according to claim 1, characterized in that: The outer surface of the extrusion ring (10) slides against the inner surfaces of the outer ring blade (3) and the inner ring blade (4).

4. The cutting tool for machining low-temperature resistant and oil-resistant rubber sealing rings according to claim 1, characterized in that: The variable diameter positioning pin (6) has a variable diameter round pin structure, and its outer end is provided with a threaded protrusion (60). The nut (7) is connected to the outer surface of the threaded protrusion (60) by thread.

5. The cutting tool for machining low-temperature resistant and oil-resistant rubber sealing rings according to claim 1, characterized in that: The outer surface of the outer ring blade (3) is provided with a first positioning block (12), and the outer surface of the first positioning block (12) is engaged with the lower outer inner surface of the stamping tool holder (1).

6. The cutting tool for machining low-temperature resistant and oil-resistant rubber sealing rings according to claim 1, characterized in that: The inner end surface of the inner ring blade (4) is provided with a second positioning block (13), and the outer surface of the second positioning block (13) is engaged with the inner end surface of the lower end of the stamping tool holder (1).

7. The cutting tool for machining low-temperature resistant and oil-resistant rubber sealing rings according to claim 1, characterized in that: The outer surfaces of the outer ring blade (3) and the inner ring blade (4) are tightly fitted to the annular positioning groove (2) of the stamping tool holder (1).

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