Piston guide pipe O-shaped ring loading tool

Abstract

The utility model discloses a piston conduit O-shaped ring loading tool, the loading tool is used for loading an O-shaped ring into a piston conduit, the loading tool comprises a mounting assembly, an O-shaped ring rod and a guide rod, a groove type photoelectric sensor is arranged in the mounting assembly; the O-shaped ring rod is tubular and comprises a thick pipe section, a thin pipe section and a transition section connecting the thick pipe section and the thin pipe section, the outer diameter of the thin pipe section is smaller than the inner diameter of the O-shaped ring in the natural state, the outer diameter of the thick pipe section is larger than the inner diameter of the O-shaped ring in the natural state, the inner diameter of the thick pipe section is larger than the outer contour of the piston guide pipe, and the end of the thin pipe section is installed on the installation assembly; the guide rod is movably installed in the pipe of the O-shaped ring rod, the tail of the guide rod is connected with the groove-shaped photoelectric sensor, and the head of the guide rod is located on the thick pipe section. According to the utility model, continuous operation can be realized, and an operator can know whether the O-shaped ring is correctly mounted in real time.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical manufacturing, in particular to a piston guide tube O-ring installation tool. Background Art

[0002] Piston guides are widely used in mechanical applications, converting piston motion into mechanical energy to achieve specific operations. O-rings are a crucial component in these applications, effectively preventing liquid or gas leaks and ensuring the guide remains stable during movement.

[0003] Chinese invention patent application publication CN111702703A discloses a tool and method for installing an O-ring for a small-diameter shaft. The tool primarily consists of an O-ring adapter and a connecting rod. During operation, the operator inserts the O-ring to be installed onto the O-ring adapter, then holds the connecting rod and moves the O-ring along the increasing axial cross-section of the O-ring adapter to the installation position. The operator then places the O-ring into the installation position using the connecting rod, and then presses the O-ring into the installation position. While more efficient than manually inserting the O-ring onto the piston guide, this method is prone to installation deviations and unstable installation. Furthermore, the operator must install each O-ring individually, which is inefficient and prevents continuous operation and improved installation efficiency.

[0004] Chinese patent CN201619077U discloses a tool for fitting an O-ring on a pressure cap of a high-pressure valve, the tool mainly consisting of a guide rod, the guide rod being mainly divided into a guide section with a smooth transition from thin to thick and a cylindrical insertion section connected to the thick end of the guide section, and an installation cavity that matches the pressure cap head is provided on the end face of the insertion section; when the tool is fitting the O-ring, the O-ring can be inserted into the specified groove without contacting the thread on the pressure cap head, thereby avoiding damage to the O-ring due to contact with the thread on the pressure cap and ensuring the surface quality of the O-ring; although the O-ring can be installed, the key issue is to avoid direct contact between the O-ring and the threaded workpiece to avoid damage, so the operator needs to visually or feel the connection during the docking installation process, and the technical requirements for the operator are high, and it is easy to have problems such as position deviation and loose installation.

[0005] Although the existing patented solution has improved the efficiency and accuracy of O-ring installation to a certain extent, it still has the following shortcomings:

[0006] ① Unable to achieve continuous work: The existing technology requires installing O-rings one by one or in small quantities and then installing the product, which cannot achieve continuous operation.

[0007] ② Unable to ensure installation reliability: Existing technologies cannot completely avoid the misalignment and damage of O-rings, which affects the quality of the product.

[0008] ③ Lack of effective feedback mechanism: It is difficult for operators to understand whether the installation is correct in real time, resulting in difficulty in timely detection and correction of installation errors.

[0009] ④ Unable to realize automatic counting: During continuous and efficient operation, operators are prone to omissions and duplications when relying on their own records.

[0010] The utility model aims to overcome the above-mentioned shortcomings and provide a more efficient, accurate and reliable piston catheter O-ring installation method through innovative structural design and automation technology. Utility Model Content

[0011] One of the technical problems to be solved by the present invention is that the existing process cannot realize continuous operation and it is difficult for the operator to know whether the installation is correct in real time, which leads to installation errors.

[0012] In order to solve the above problems, the present application discloses a piston catheter O-ring loading tool, which is used to load the O-ring into the piston catheter. The loading tool includes: a mounting assembly, an O-ring rod and a guide rod, wherein a slot-type photoelectric sensor is provided in the mounting assembly; the O-ring rod is tubular, and includes a thick tube section, a thin tube section and a transition section connecting the thick tube section and the thin tube section, the outer diameter of the thin tube section is smaller than the inner diameter of the O-ring in its natural state, the outer diameter of the thick tube section is larger than the inner diameter of the O-ring in its natural state, the inner diameter of the thick tube section is larger than the outer contour of the piston catheter, and the end of the thin tube section is mounted on the mounting assembly; the guide rod is movably mounted in the tube of the O-ring rod, the tail of the guide rod is connected to the slot-type photoelectric sensor, and the head of the guide rod is located in the thick tube section.

[0013] The piston catheter O-ring insertion tool provided by the aforementioned solution pre-arranges multiple O-rings to be installed on the outer surface of the thin O-ring rod. The piston catheter is installed on the thicker end of the O-ring rod and abuts against the guide rod. A transition section with a specific curvature guides the O-rings in sequence to smoothly reach the notch of the piston catheter. A movable guide rod is provided inside the O-ring rod. When the O-ring is installed in the piston catheter, the piston catheter presses against the guide rod, causing its displacement to be detected by a slot-shaped photoelectric sensor at the end of the guide rod, which verifies whether the piston catheter is correctly inserted. This solution enables continuous operation and provides real-time information on whether the installation is correct.

[0014] In order to achieve automatic rebound of the guide rod when the O-ring is installed into the piston guide tube using the O-ring installation tool, a better improvement is that the front end of the guide rod is a cylindrical section and the rear end is a stud section, the cylindrical section is limited to the transition section, and a spring is installed between the cylindrical section and the transition section.

[0015] In order to reduce the friction resistance when the guide rod moves, a better improvement is that the front end of the guide rod is provided with a first bushing, and the spring is arranged between the first bushing and the cylindrical section.

[0016] In order to reduce the friction resistance when the guide rod moves, another better improvement is that the rear end sleeve of the guide rod is provided with a second bushing, and the rear end stud section of the guide rod is installed with a bushing fixing block.

[0017] In order to install the O-ring rod and the groove type photoelectric sensor, as an option of the above-mentioned piston guide O-ring installation tool, the installation assembly includes an O-ring rod installation assembly and a photoelectric installation assembly.

[0018] The O-ring rod installation assembly includes an O-ring rod seat, an O-ring rod sleeve is provided on the O-ring rod seat, and the tail of the thin tube section is installed in the O-ring rod sleeve.

[0019] To quickly install and secure O-ring rods of varying sizes, an improvement to the aforementioned O-ring rod mounting assembly features a notch in both the O-ring rod sleeve and the O-ring rod holder. An eccentric cam stopper is located on one side of the notch, allowing for the clamping of O-ring rods of varying sizes. The O-ring rod can be replaced based on the size of the piston tube, and the O-ring rod holder and sleeve can accommodate the tail end of the thin tube section of all O-ring rods.

[0020] As an alternative to the aforementioned slot-type photoelectric sensor, the slotted opening of the sensor serves as a light detection point. The sensor is fixedly mounted on a photoelectric mounting plate, and a photoelectric protection plate is positioned outside the sensor. Both the mounting plate and the protection plate are mounted on the mechanism base. A light detection point is positioned within the slotted opening to detect the position of the stud end at the rear end of the guide rod. This light detection point can be used to detect guide rod displacement and, therefore, determine whether the O-ring is properly installed in the piston guide.

[0021] A preferred improvement is that the loading fixture further includes an indicator light, which is electrically connected to the slot-shaped photoelectric sensor and mounted on a side of the photoelectric mounting assembly via an indicator light mounting plate. The slot-shaped photoelectric sensor transmits detection signals to the indicator light, which is fixedly mounted on the side of the photoelectric protective plate via the indicator light mounting plate. The indicator light's direction is easily visible to the operator, and changes in the indicator light provide real-time feedback to the operator.

[0022] To count the number of O-rings installed, as an improvement to the slot-type photoelectric sensor, the loading fixture also includes a counter. This counter is electrically connected to the slot-type photoelectric sensor and is fixed to the other side of the photoelectric mounting assembly via a counter mounting plate. The slot-type photoelectric sensor transmits detection signals to the counter, which is fixed to the side of the photoelectric protection plate via a counter mounting plate. The counter is oriented for easy viewing by the operator, and changes in the counter automatically record the number of piston guides installed.

[0023] The technical effects of the utility model are:

[0024] 1. By pre-arranging multiple O-rings to be installed on the outer surface of the O-ring rod's thin tube section and using a conical cylindrical section with a specific curvature to guide the O-rings smoothly into the notch of the piston guide tube, continuous operation is achieved, greatly improving production efficiency. Compared with the existing technology of installing one O-ring at a time, this significantly improves efficiency and can meet the needs of large-scale production.

[0025] 2. A movable guide rod and slotted photoelectric sensor detect whether the piston guide tube is correctly inserted and provide real-time feedback to the operator through an indicator light, ensuring installation reliability. This design avoids misalignment and damage to the O-ring, improves product quality, and reduces scrap rates.

[0026] 3. By setting a counter, the number of installed piston catheters is automatically recorded, effectively avoiding the problems of omission and duplication of manual recording and improving data accuracy.

[0027] 4. The handle and cutout groove design make it easy for the operator to quickly disassemble and fix the O-ring rod, reducing the difficulty of installation and improving the convenience of operation.

[0028] 5. The O-ring rod can be replaced according to the specifications of the piston catheter, and the O-ring rod seat and O-ring rod sleeve can adapt to the installation of the rear end of the thin tube section of the O-ring rod of all specifications, with good adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of a piston catheter O-ring installation tool provided in an embodiment of the present application;

[0030] Figure 2 This is a diagram of a piston catheter O-ring installation tool provided in an embodiment of the present application;

[0031] Figure 3 This is a cross-sectional view of a piston catheter O-ring installation tool provided in an embodiment of the present application;

[0032] Figure 4 This is a schematic diagram of the working of the piston catheter tool provided in an embodiment of the present application;

[0033] Figure 5 This is a schematic diagram of the working of the tooling without the piston catheter provided in the embodiment of the present application;

[0034] In the picture:

[0035] 1. Piston catheter;

[0036] 2. O-ring;

[0037] 3. O-ring rod; 31. thick tube section; 32. thin tube section; 33. transition section;

[0038] 4. Guide rod; 401. Cylindrical section; 402. Stud section; 41. Spring; 42. Bushing fixing block; 431. First bushing; 432. Second bushing;

[0039] 5. Mechanism base; 51. O-ring rod seat; 52. O-ring rod sleeve; 53. Eccentric cam limiter; 54. Screw;

[0040] 6. Slot-type photoelectric sensor; 61. Photoelectric fixing plate; 62. Photoelectric protection plate; 63. Slot detection light;

[0041] 7. Indicator light; 71. Indicator light mounting plate;

[0042] 8. Counter; 81. Counter mounting plate. DETAILED DESCRIPTION

[0043] The following will be combined with the Figures 1 to 5 The following embodiments of the technical solution of the present application are described in detail. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only used as examples and are not intended to limit the scope of protection of the present application.

[0044] Example 1

[0045] like Figures 1-2The figure shows the overall structure of a piston guide O-ring installation tool, which is used to install the O-ring 2 into the piston guide 1. The installation tool includes: a mounting assembly, an O-ring rod 3, and a guide rod 4; the O-ring rod 3 is divided into two functional sections, one end is a thick tube section 31, and the other end is a thin tube section 32. The thick tube section 31 and the thin tube section 32 are connected by a transition section 33. The transition section 33 has a specific curvature, which can ensure that the O-ring 2 can be smoothly transitioned to the groove of the piston guide 1. The curvature design of the transition section 33 of the O-ring rod 3 is very important. The maximum outer diameter of the conical cylindrical transition section 33 must not only ensure that it does not exceed the maximum safe elastic expansion inner diameter of the O-ring 2, but also ensure that the conical surface of the transition section 33 is easy and smooth when guiding the transition O-ring 2; the rear end is a thin tube section, and a number of O-rings 2 to be installed can be pre-arranged on its outer surface. Through appropriate layout and fixing methods, it is ensured that the maximum required number of O-rings 2 can be installed on the surface of the thin tube section of the O-ring rod;

[0046] A movable guide rod 4 is installed inside the O-ring rod 3. A slot-shaped photoelectric sensor 6 is provided at the tail of the guide rod to detect whether the piston catheter 1 is correctly inserted. It can accurately detect the insertion status of the piston catheter, thereby improving the reliability of the entire installation process.

[0047] Example 2

[0048] like Figure 3 The diagram shows the internal structure of an O-ring rod 3 for a piston guide O-ring installation tool. The guide rod 4 is divided into three sections, each with its own specific function. The front end is a cylindrical section 401, the middle is a thin tube section, and the rear end is a stud section 402. Bushings are installed at the front and rear ends of the guide rod 4 to reduce friction resistance when the guide rod moves. Specifically, the front end of the guide rod 4 is provided with a first bushing 431, and a spring 41 is provided between the first bushing 431 and the cylindrical section 401. The rear end of the guide rod 4 is provided with a second bushing 432. The rear end stud section of the guide rod 4 is provided with a bushing fixing block 42. The bushing material has a certain self-lubricating effect, such as brass or composite. Materials, etc., the cylindrical section 401 at the front end of the guide rod 4 cooperates with the first bushing 431 and the spring 41, which can provide a buffer when the piston guide tube 1 is inserted, reduce the impact on the O-ring rod 3 and the bushing 43, and at the same time realize the automatic rebound of the guide rod 4 during the process of installing the O-ring into the piston guide tube using the O-ring installation tool; the thin tube section in the middle ensures the stability of the guide rod and sufficient space for movement; the threaded hole of the bushing fixing block 42 is installed and connected with the rear end stud of the guide rod 4, and the rear end stud of the guide rod 4 leaks out of the bushing fixing block 42. The installation of the bushing fixing block 42 limits the activity space of the bushing 43, ensuring the stability of the guide rod during the movement.

[0049] Example 3

[0050] like Figures 2-3The diagram shows the structure of an O-ring rod seat 51 for installing an O-ring into a tooling for a piston catheter. The tail end of the thin tube section at the rear end of the O-ring rod 3 is fixedly installed in the O-ring rod sleeve 52. The O-ring rod sleeve 52 is fixedly installed in the O-ring rod seat 51 by screws 54. The O-ring rod seat 51 is fixedly installed on the mechanism base 5. Both the O-ring rod sleeve 52 and the O-ring rod seat 51 have cutouts designed for fine-tuning and fixing the O-ring rod 3, and the cutout directions of the O-ring rod sleeve 52 and the O-ring rod seat 51 remain consistent during the installation process. An eccentric cam limiter 53 is provided on the O-ring rod seat 51 for The O-ring rod 3 can be quickly disassembled and fixed. The eccentric cam limiter 53 is specifically an eccentric cam clamping wrench. When the thin tube section of the O-ring rod 3 needs to be supplemented with an O-ring, the operator can use the handle 53 to easily and labor-savingly disassemble and assemble it quickly; the O-ring rod 3 can be replaced according to the specifications of the piston catheter 1, and the O-ring rod seat 51 and the O-ring rod sleeve 52 can adapt to the installation of the rear end thin tube section of the O-ring rod 3 of all specifications. The operator can quickly replace the O-ring rod according to different piston catheter specifications. This flexibility allows the device to adapt to parts of different specifications, enhancing the versatility of the tooling.

[0051] Example 4

[0052] like Figure 2 、 Figure 4 、 Figure 5 The figure shows an automated detection feedback structure for the O-ring installation of a piston guide tube. The slot-type photoelectric sensor 6 is fixedly mounted on a photoelectric fixing plate 61, and a photoelectric protection plate 62 is provided on the outside of the slot-type photoelectric sensor 6. The photoelectric fixing plate 61 and the photoelectric protection plate 62 are both mounted on the mechanism base 5. A slot detection light 63 is provided inside the slot of the slot-type photoelectric sensor 6 for detecting the position of the stud end at the rear end of the guide rod 4.

[0053] The slot-type photoelectric sensor 6 can transmit the detection signal to the indicator light 7, which is fixedly mounted on the side of the photoelectric protection plate 62 by the indicator light mounting plate 71. The direction of the indicator light 7 can be easily viewed by the operator, and the changes of the indicator light 7 can be fed back to the operator in real time.

[0054] The slot-type photoelectric sensor 6 can transmit the detection signal to the counter 8, which is fixedly mounted on the side of the photoelectric protection plate 62 by the counter mounting plate 81. The direction of the counter 8 can be convenient for the operator to view, and the changes in the counter 8 can be used to automatically record the number of installed piston catheters 1.

[0055] Working process and principle:

[0056] Step 1: Pre-install multiple O-rings 2 on the outer surface of the thin tube section of the O-ring rod 3, and install the piston guide tube 1 at the end of the conical column section;

[0057] Step 2: The end of the piston guide tube 1 contacts the front cylindrical section of the guide rod 4 and drives the guide rod 4 to move, and compresses the internal spring 41. The slot-type photoelectric sensor 6 detects the rear end stud section of the guide rod 4 and transmits the signal to the indicator light 7 and the counter 8 at the same time. The change of the indicator light 7 feedbacks the operator to install the piston guide tube 1 in place.

[0058] Step 3: Guide the O-ring into the groove of the piston guide tube 1 and pull out the piston guide tube 1. The spring 41 gradually returns to its original shape and drives the guide rod 4 to return to its initial position. The slot-type photoelectric sensor 6 detects that the rear end stud section of the guide rod 4 has left, and at the same time transmits the signal to the indicator light 7 and the counter 8. The indicator light 7 changes again to feedback the operator that the piston guide tube 1 has left, and the number displayed on the counter 8 changes to feedback the operator that it is completed.

[0059] Finally, it should be noted that unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0060] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0061] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0062] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A piston guide tube O-ring installation tool for installing an O-ring (2) into a piston guide tube (1), characterized by: The loading tooling comprises: A mounting assembly, wherein a slot-type photoelectric sensor (6) is provided in the mounting assembly; A tubular O-ring rod (3), the O-ring rod (3) comprising a thick tube section (31), a thin tube section (32), and a transition section (33) connecting the thick tube section (31) and the thin tube section (32), the outer diameter of the thin tube section (32) being smaller than the inner diameter of the O-ring (2) in its natural state, the outer diameter of the thick tube section (31) being larger than the inner diameter of the O-ring (2) in its natural state, the inner diameter of the thick tube section (31) being larger than the outer contour of the piston guide tube (1), and the end of the thin tube section (32) being mounted on the mounting assembly; A guide rod (4) is movably installed in the O-ring rod (3) tube, the tail of the guide rod (4) is connected to the slot-type photoelectric sensor (6), and the head of the guide rod (4) is located in the thick tube section (31).

2. The piston guide tube O-ring installation tool according to claim 1, characterized in that: The front end of the guide rod (4) is a cylindrical section (401) and the rear end is a stud section (402). The cylindrical section (401) is limited to the transition section (33). A spring (41) is installed between the cylindrical section (401) and the transition section (33).

3. The piston guide tube O-ring installation tool according to claim 2, characterized in that: The front end of the guide rod (4) is sleeved with a first bushing (431), and the spring (41) is arranged between the first bushing (431) and the cylindrical section (401).

4. The piston guide tube O-ring installation tool according to claim 2, characterized in that: The rear end sleeve of the guide rod (4) is provided with a second bushing (432), and the rear end stud section of the guide rod (4) is installed with a bushing fixing block (42).

5. The piston guide tube O-ring installation tool according to claim 1, characterized in that: The mounting assembly includes an O-ring rod mounting assembly and a photoelectric mounting assembly.

6. The piston guide tube O-ring installation tool according to claim 5, characterized in that: The O-ring rod installation assembly comprises an O-ring rod seat (51), an O-ring rod sleeve (52) is provided on the O-ring rod seat (51), and the tail of the thin tube section (32) is installed in the O-ring rod sleeve (52).

7. The piston guide tube O-ring installation tool according to claim 6, characterized in that: The O-ring rod sleeve (52) and the O-ring rod seat (51) are both provided with a notch groove, and an eccentric cam limiting member (53) is provided on one side of the notch groove on the O-ring rod seat (51).

8. The piston guide tube O-ring installation tool according to claim 1, characterized in that: The notch of the slot-shaped photoelectric sensor (6) is a light detection position.

9. The piston guide tube O-ring installation tool according to claim 4, characterized in that: The loading tool further comprises an indicator light (7), and the indicator light (7) is electrically connected to the slot-shaped photoelectric sensor (6).

10. The piston guide tube O-ring installation tool according to claim 4, characterized in that: The loading tool further comprises a counter (8), and the counter (8) is electrically connected to the slot-shaped photoelectric sensor (6).

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