A sealing ring cutting device for detecting the internal dimensions of sealing rings

Abstract

This utility model discloses a sealing ring cutting device for detecting the internal dimensions of a sealing ring. It relates to the technical field of cutting a sealing ring in half. The device includes a cutting assembly and a protective insert. The cutting assembly includes a base and a boss fixed to the top surface of the base. A square recess is formed on the top surface of the base, and a notch extending through its front and rear ends is formed inside the base. An opening A is formed in the center of the top surfaces of both the base and the boss. A cutter is hinged to the opening A of the boss, and a counterweight is fixed to the other end of the cutter. The outer contour of the protective insert matches the square recess. A circular countersunk hole is formed on the top surface of the protective insert, the diameter of which is equal to the outer diameter of the sealing ring. Openings B and C are also formed on the top surface of the protective insert. The advantages of this utility model are: it greatly reduces the labor intensity of workers and prevents deformation and burr formation.

Description

Technical Field

[0001] This utility model relates to the technical field of cutting a sealing ring in half, and in particular to a sealing ring cutting device for detecting the internal dimensions of a sealing ring. Background Technology

[0002] The structure of a certain manufactured sealing ring is as follows: Figures 1-2 As shown, the material is plastic. The sealing ring includes a sealing ring body 1, a first annular platform 2 fixed on the inner wall of the sealing ring body 1, and a second annular platform 3 fixed on the inner wall of the first annular platform 2. The sealing ring body 1, the first annular platform 2 and the second annular platform 3 are coaxially arranged and integrally formed.

[0003] After each batch of sealing rings is produced in the workshop, workers must select 20 sealing rings to inspect their internal dimensions. That is, they must check the horizontal distance H between the inner walls of the first annular platform 2 and the second annular platform 3 of the 20 sealing rings. After inspection, if the horizontal distance H is within the design range, the inspected sealing ring is judged to be a qualified product; if the horizontal distance H is not within the design range, the inspected sealing ring is judged to be a defective product.

[0004] If one of the 20 randomly selected sealing rings is defective, the worker will determine that all sealing rings produced in this batch are defective; otherwise, the worker will consider all sealing rings produced in this batch to be qualified.

[0005] Before inspecting the internal dimensions of the sealing ring, the worker uses a utility knife to radially cut the sealing ring in half along its center. After cutting, the worker then cuts each half in half again, thus dividing the sealing ring into four parts. Only after this division can the cut parts be measured using measuring instruments [without division, it is impossible to measure the dimensions using measuring instruments], and only then can the internal dimensions of the sealing ring, namely the horizontal spacing H, be measured.

[0006] However, although workers can cut the sealing ring in half with a utility knife, the following technical defects still exist in actual operation: I. Up to 20 sealing rings need to be cut every day, and the sealing rings are made of hard material, requiring both hands to press down hard to cut them. The repeated cutting causes pain to the workers' hands (especially for female workers). Therefore, using a utility knife to cut the sealing rings undoubtedly increases the workers' workload.

[0007] II. The sealing ring can only be cut by pressing down with both hands using a utility knife. Due to the uneven pressure and non-perpendicularity of the downward force, the inner edge of the second annular platform 3 will deform, forming a ring of burrs 4. Figure 3As shown, this leads to the measuring instrument actually measuring a horizontal distance H that is not the true value, which in turn affects the test results. That is, workers may mistakenly judge qualified products as unqualified products.

[0008] Therefore, there is an urgent need for a sealing ring cutting device that greatly reduces the workload of workers and does not cause deformation or burrs. Utility Model Content

[0009] The purpose of this invention is to overcome the shortcomings of the prior art and provide a sealing ring cutting device for detecting the internal dimensions of sealing rings that greatly reduces the labor intensity of workers and does not produce burrs after cutting.

[0010] The purpose of this utility model is achieved through the following technical solution: a sealing ring cutting device for detecting the internal size of a sealing ring, which includes a cutting component and a protective insert. The cutting component includes a base and a boss fixed on the top surface of the base. A square groove is formed on the top surface of the base. A notch is formed in the base, penetrating its front and rear ends. The notch is connected to the square groove. An opening A is formed in the center of the top surface of the base and the boss. A cutter is hinged in the opening A of the boss. A counterweight is fixed at the other end of the cutter. The outer contour of the edge protector fits the square recess. A circular recess is provided on the top surface of the edge protector. The diameter of the circular recess is equal to the outer diameter of the sealing ring. An opening B and an opening C are provided on the top surface of the edge protector. The opening B (14) is perpendicular to the opening C, and both the opening B and the opening C radially penetrate the center of the circular recess.

[0011] The boss is fixed with a pin that passes through the front end face of the boss, the opening A of the boss, and the rear end face of the boss in sequence. The cutter has a through hole, which is sleeved on the pin to hinge the cutter in the opening A of the boss.

[0012] The height of the edge protector is less than the depth of the square recess.

[0013] The width of the slot in opening A is equal to the width of the slot in opening B, and the width of the slot in opening B is equal to the width of the slot in opening C.

[0014] The thickness of the cutter is equal to the longitudinal width of the opening A.

[0015] This invention has the following advantages: it greatly reduces the workload of workers and does not produce burrs after cutting. Attached Figure Description

[0016] Figure 1 This is an isometric view of the sealing ring; Figure 2 for Figure 1 AA section view; Figure 3This is a schematic diagram showing burrs forming in the four parts of a sealing ring; Figure 4 This is a schematic diagram of the slitting component of this utility model; Figure 5 for Figure 4 The main view; Figure 6 for Figure 4 Top view; Figure 7 This is a schematic diagram of the edge protector insert of this utility model; Figure 8 for Figure 7 Top view; Figure 9 A schematic diagram showing the fit between the edge protector insert and the cut assembly; Figure 10 for Figure 9 Top view; Figure 11 This is a schematic diagram of the cutting blade's movement; Figure 12 This is a physical image of the cutting component of this utility model; Figure 13 This is a photograph of the assembled sectional components and edge protector inserts. In the picture: 1-Sealing ring body, 2-First annular platform, 3-Second annular platform, 4-Burst; 5-Edge protector insert, 6-Base, 7-Boss, 8-Square recess, 9-Notch, 10-Opening A, 11-Cutter, 12-Counterweight, 13-Circular countersunk hole, 14-Opening B, 15-Pin, 16-Opening C. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the following description: like Figures 4-8 As shown, a sealing ring cutting device for detecting the internal dimensions of a sealing ring includes a cutting assembly and a protective insert 5. The cutting assembly includes a base 6 and a boss 7 fixed on the top surface of the base 6. A square groove 8 is formed on the top surface of the base 6, and a notch 9 is formed inside the base 6, penetrating its front and rear ends. The notch 9 is connected to the square groove 8. An opening A10 is formed in the center of the top surface of both the base 6 and the boss 7. A cutter 11 is hinged in the opening A10 of the boss 7, and a counterweight 12 is fixed at the other end of the cutter 11. A pin 15 is fixed inside the boss 7, passing sequentially through the front end face of the boss 7, the opening A10 of the boss 7, and the rear end face of the boss 7. A through hole is formed in the cutter 11, and the through hole of the cutter 11 is sleeved on the pin 15 to hinge the cutter 11 in the opening A10 of the boss 7.

[0018] The outer contour of the edge protector 5 matches the square recess 8. A circular countersunk hole 13 is provided on the top surface of the edge protector 5. The diameter of the circular countersunk hole 13 is equal to the outer diameter of the sealing ring. An opening B14 and an opening C16 are provided on the top surface of the edge protector 5. The openings B14 and C16 are perpendicular to each other, and both the openings B14 and C16 radially penetrate the center of the circular countersunk hole 13. The height of the edge protector 5 is less than the depth of the square recess 8.

[0019] The groove width of opening A10 is equal to the groove width of opening B14, and the groove width of opening B14 is equal to the groove width of opening C16; the thickness of the cutter 11 is equal to the longitudinal width of opening A10.

[0020] The method by which the workers cut the 20 randomly selected sealing rings in half was as follows: S1. Assembly of the edge protector insert 5 and the cutting assembly: The worker inserts the edge protector insert 5 from top to bottom into the square recess 8 of the base 6 of the cutting assembly. At this time, the opening B14 of the edge protector insert 5 is connected to the opening A10 of the boss 7, thus realizing the assembly of the edge protector insert 5 and the cutting assembly. Figures 9-10 As shown; S2, The worker takes out a... Figures 1-2 The sealing ring shown is placed flat in the circular countersunk hole 13 of the edge insert 5. Since the diameter of the circular countersunk hole 13 is equal to the outer diameter of the sealing ring, the sealing ring is positioned. At this time, the center of the sealing ring, the opening A10 of the boss 7 and the opening B14 of the edge insert 5 are on the same horizontal straight line. S3. The worker holds the counterweight 12 and rotates it upwards. The counterweight 12 drives the cutter 11 to rotate clockwise around the pin 15. The cutter 11 moves towards the sealing ring. The direction of movement of the cutter 11 is as follows: Figure 11 As shown by the middle arrow, when the cutter 11 cuts into the opening B14, the sealing ring can be cut into two halves, thus achieving the goal of cutting the first sealing ring into two halves; S4. The worker removes the edge protector insert 5 from the base 6, rotates it horizontally by 90 degrees, and then places it into the square recess 8 of the base 6. At this time, the opening C16 of the edge protector insert 5 and the boss 7 are on the same horizontal line. The worker then repeats step S3 once to cut the two halves that have already been cut, thus finally cutting the sealing ring into four parts. After cutting, the worker can measure the horizontal distance H of the four parts using a measuring instrument. S5. The worker repeats steps S2 to S4 multiple times to cut the remaining 19 sealing rings into four parts.

[0021] In steps S3 to S4, when the cutter 11 cuts the sealing ring into four parts, the edge protector 5 fits the bottom surface of the sealing ring, so the inner edge of the second annular platform 3 will not deform and will not form burrs. This ensures that the horizontal distance H actually measured by the measuring instrument is the true value, thereby improving the accuracy of workers in detecting the internal dimensions of the sealing ring.

[0022] In addition, since the other end of the cutter 11 is connected to the counterweight 12, the counterweight 12 increases the downward pressure of the cutter 11, making the cutting more labor-saving. This makes it easier for workers to easily cut the sealing ring of hard material into two halves, which greatly reduces the labor intensity of workers compared to the method of workers using a utility knife to cut.

[0023] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sealing ring cutting device for detecting the internal dimensions of a sealing ring, characterized in that: It includes a cutting assembly and a protective insert (5). The cutting assembly includes a base (6) and a boss (7) fixed on the top surface of the base (6). A square groove (8) is provided on the top surface of the base (6). A notch (9) is provided in the base (6) that runs through its front and rear ends. The notch (9) is connected to the square groove (8). An opening A (10) is provided in the center of the top surface of the base (6) and the boss (7). A cutter (11) is hinged in the opening A (10) of the boss (7). A counterweight (12) is fixed at the other end of the cutter (11). The outer contour of the edge protector (5) matches the square recess (8). A circular recess (13) is provided on the top surface of the edge protector (5). The diameter of the circular recess (13) is equal to the outer diameter of the sealing ring. An opening B (14) and an opening C (16) are provided on the top surface of the edge protector (5). The opening B (14) and the opening C (16) are perpendicular to each other, and both the opening B (14) and the opening C (16) radially penetrate the center of the circular recess (13).

2. The sealing ring cutting device for detecting the internal dimensions of a sealing ring according to claim 1, characterized in that: The boss (7) is fixed with a pin (15) that passes through the front end face of the boss (7), the opening A (10) of the boss (7) and the rear end face of the boss (7) in sequence. The cutter (11) has a through hole and the through hole of the cutter (11) is sleeved on the pin (15) so as to hinge the cutter (11) in the opening A (10) of the boss (7).

3. A sealing ring cutting device for detecting the internal dimensions of a sealing ring according to claim 1, characterized in that: The height of the edge protector (5) is less than the depth of the square groove (8).

4. A sealing ring cutting device for detecting the internal dimensions of a sealing ring according to claim 1, characterized in that: The groove width of opening A (10) is equal to the groove width of opening B (14), and the groove width of opening B (14) is equal to the groove width of opening C (16).

5. A sealing ring cutting device for detecting the internal dimensions of a sealing ring according to claim 1, characterized in that: The thickness of the cutter (11) is equal to the longitudinal width of the opening A (10).

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