Snap spring limiting and transferring device and snap spring press-fitting tool

Abstract

The utility model discloses a clamp spring limiting and transferring device and a clamp spring press-fitting tool, and relates to the field of clamp spring mounting equipment. The transition sliding sleeve is used for installing and transferring the snap spring, a cylindrical through cavity is formed in the transition sliding sleeve, and an opening groove penetrating from the top end is formed in the side wall of the transition sliding sleeve; the pressing rod A is used for installing a clamping spring into the transition sliding sleeve, and the side wall of the pressing rod A is provided with a limiting pin matched with the open groove; the pressing rod B is used for pushing the clamping spring out of the transition sliding sleeve; therefore, the aim of movably limiting the clamp spring is fulfilled.

Description

Technical Field

[0001] The utility model relates to the field of clamp spring installation equipment, in particular to a clamp spring limit transfer device and a clamp spring press-fitting tool. Background Art

[0002] In the automobile engine assembly industry, the installation of piston pin retaining rings is a process with high technical requirements. In response to the installation problem of piston pin retaining rings, Chinese Patent No. ZL201702747U has proposed a solution. The device shown in the patent uses a guide sleeve with a conical guide surface and a pressure rod with a retractable elastic claw to adapt to the change in the diameter of the wire retaining ring, thereby smoothly pressing the retaining ring into the retaining ring groove of the piston. This design optimizes the installation process of the wire retaining ring and realizes the convenience and efficiency of manual operation.

[0003] Nevertheless, the device of the prior art still has limitations in actual operation. The main manifestation is that when faced with different models and specifications of retaining springs, the adaptability of the existing device is limited and it cannot be quickly adjusted to adapt to the diverse retaining spring diameters and thicknesses. In addition, even in manual operation, the operation of the existing device is still relatively complicated and requires high skills of the operator, which may lead to a decrease in assembly efficiency in emergency situations. Utility Model Content

[0004] The utility model aims to provide a clamp spring limit transfer device to achieve the purpose of movable limit of the clamp spring.

[0005] In order to achieve the above purpose, the utility model adopts the following technical means:

[0006] A retaining spring limit transfer device, comprising:

[0007] The transition sleeve is used for loading and transferring the retaining spring, and has a cylindrical through cavity inside and an open groove penetrating from the top end on the side wall;

[0008] A pressure rod A, used for installing the retaining ring into the transition sleeve, and having a side wall thereof provided with a limit pin matching the opening groove;

[0009] The pressure rod B is used to push the retaining ring out of the transition sleeve.

[0010] Preferably, the transition sleeve includes a positioning section and a guide section which are arranged vertically, the positioning section has the same inner diameter as the guide section, the outer diameter of the guide section gradually decreases from top to bottom, and the opening groove is arranged on the side wall of the positioning section.

[0011] Furthermore, there are at least two opening slots, and two adjacent opening slots are equidistantly arranged.

[0012] Furthermore, the pressure rod A includes a pressure head A, a positioning rod A and a limiting rod A which are coaxially arranged;

[0013] The limiting pin is arranged on the side wall of the positioning rod, and the limiting pin is arranged perpendicular to the axis of the positioning rod.

[0014] Furthermore, the pressure rod B includes a pressure head B, a positioning rod B, a push head and a limit rod B which are coaxially arranged;

[0015] The outer diameter of the push head is greater than the outer diameter of the limit rod B, and the push head is used to extend into the transition sleeve to push out the retaining spring embedded in the transition sleeve.

[0016] The utility model relates to a clamp spring limit transfer device, which has the following beneficial effects during use:

[0017] The clamping spring is pushed into the transition sleeve by the pressure rod A. During the installation process, the limit pin gradually enters the open groove. When the limit pin abuts against the open groove, the clamping spring is pushed in. At this time, the clamping spring is completely positioned and installed in the transition sleeve. At the same time, under the abutment of the limit pin and the open groove, it can also ensure that the clamping spring can maintain a horizontal state after the installation is completed, so that when the installed compression spring is pushed and installed by the pressure rod B in the future, the compression spring can be pushed out horizontally from the bottom of the transition sleeve to the installation position. In addition, before installation is required, the clamping spring embedded in the transition sleeve can maintain a stable engagement state, so that it can maintain a relatively static state and move with the transition sleeve. In this way, when the clamping spring needs to be transferred, after the transfer is completed, as long as the position state of the transition sleeve is the same, the state of the clamping spring is also the same. After the transfer of the clamping spring is completed, the clamping spring can be quickly adjusted to the same state, which greatly improves the uniformity of installation.

[0018] In addition, in order to achieve the purpose of quickly and accurately installing the retaining spring into the piston pin, the utility model also provides a simple piston pin retaining spring press-fitting tool, including:

[0019] A base, used for carrying the operating mechanism;

[0020] A support, which is disassembled and arranged on the top surface of the base, and has a vertically penetrating limiting channel inside the support;

[0021] The transition sleeve is used for loading and transferring the retaining spring, and has a cylindrical through cavity inside and an open groove penetrating from the top end on the side wall;

[0022] A pressure rod A, used for installing the retaining ring into the transition sleeve, the side wall of which is configured with a limit pin matching the opening groove, and a limit rod A extending into the limit channel;

[0023] The pressure rod B is used to push the retaining ring out of the transition sleeve, and a limit rod B is also constructed.

[0024] Preferably, the top surface of the support is constructed with a sunken functional groove, which includes a sliding sleeve positioning groove and an auxiliary unloading groove. The sliding sleeve positioning groove is arranged above the auxiliary unloading groove, and the inner diameter of the auxiliary unloading groove is the same as the inner diameter of the cylindrical through cavity.

[0025] Furthermore, the guide section of the transition sleeve is embedded in the sleeve positioning groove, the outer diameter of the guide section gradually decreases from top to bottom, and the inner diameter of the sleeve positioning groove gradually increases from bottom to top and matches the outer diameter of the guide section.

[0026] Furthermore, a positioning pin is constructed on the top surface of the base, the top end of the positioning pin extends to the top of the base, the support is inserted into the top surface of the positioning pin, and the top surface of the positioning pin extends into the limiting channel.

[0027] Furthermore, a shock-absorbing rubber pad is provided between the support and the base.

[0028] The press-fitting tooling involved in the utility model has the following beneficial effects when installing the retaining spring:

[0029] Lay the base flat and place the transition sleeve on the top of the support, so that the support can keep the transition sleeve in a horizontal and stable state, then use the pressure rod A to install the retaining ring into the transition sleeve, and use the limit rod A to extend into the limit channel of the support to prevent the limit rod from causing the retaining ring to tilt when pushing the retaining ring. At the same time, use the limit pin and the open groove to prevent the pressure rod A from axially rotating during the process of pushing the retaining ring and causing the retaining ring to tilt. At the same time, use the abutment positioning of the limit pin and the open groove to ensure that the retaining ring enters the state of the transition sleeve, and prevent the bottom end of the retaining ring from leaking out from the bottom end of the transition sleeve during the process of pushing the transition sleeve, or make the bottom end of the retaining ring too far away from the bottom end of the transition sleeve. After the retaining ring is installed into the transition sleeve, the support is removed from the top surface of the base together with the transition sleeve, and then the piston assembly is placed on the base. The transition sleeve is removed from the support, and the bottom end of the transition sleeve is aligned with the position where the retaining ring is to be installed. The retaining ring is pushed out of the transition sleeve and installed using the pressure rod B, and the limit rod B is extended into the piston pin at the same time, so as to avoid the displacement of the pressure rod B during the process of installing the retaining ring using the pressure rod B, thereby affecting the accuracy of the installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the clamp spring limit transfer device of the utility model.

[0031] Figure 2It is a schematic diagram of the cross-sectional structure of the cooperation between the pressure rod A and the transition sleeve in the retaining spring limit transfer device of the utility model.

[0032] Figure 3 The utility model is a schematic diagram of the structure of a simple piston pin retaining spring press-fitting tooling.

[0033] Figure 4 It is a schematic diagram of the cross-sectional structure of the assembly pressure rod A in the simple piston pin retaining spring press-fitting tooling of the utility model.

[0034] Among them, 1-transition sleeve, 2-cylindrical through cavity, 3-opening groove, 4-pressure rod A, 41-pressure head A, 42-positioning rod A, 43-limiting rod A, 5-limiting pin, 6-pressure rod B, 61-pressure head B, 62-positioning rod B, 63-push head, 64-limiting rod B, 7-positioning section, 8-guide section, 9-base, 10-support, 11-limiting channel, 12-sleeve positioning groove, 13-auxiliary unloading trough, 14-positioning pin, 15-shock-absorbing rubber pad. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Please refer to Figure 1 and Figure 2 As shown, a retaining spring limit transfer device comprises:

[0042] The transition sleeve 1 is used for loading and transferring the retaining spring, and has a cylindrical through cavity 2 inside, and an open groove 3 penetrating from the top end thereof on the side wall;

[0043] A pressure rod A4, used for installing the retaining ring into the transition sleeve 1, and a side wall of which is provided with a limit pin 5 matching the opening groove 3;

[0044] The pressure rod B6 is used to push the retaining ring out of the transition sleeve 1.

[0045] In this way, the clamping spring is pushed into the transition sleeve 1 by the pressure rod A4. During the installation process, the limit pin 5 gradually enters the opening groove 3. When the limit pin 5 abuts against the opening groove 3, the clamping spring is pushed in. At this time, the clamping spring is completely positioned and installed in the transition sleeve 1. At the same time, under the abutment of the limit pin 5 and the opening groove 3, it can also ensure that the clamping spring can maintain a horizontal state after the installation is completed, so that when the installed compression spring is pushed and installed by the pressure rod B6 in the future, the compression spring can be pushed out horizontally from the bottom of the transition sleeve 1 to the installation position. In addition, before installation is required, the clamping spring embedded in the transition sleeve 1 can maintain a stable engagement state, so that it can remain relatively static and move with the transition sleeve 1. In this way, when the clamping spring needs to be transferred, after the transfer is completed, as long as the position state of the transition sleeve 1 is the same, the state of the clamping spring is also the same. After the transfer of the clamping spring is completed, the clamping spring can be quickly adjusted to the same state, which greatly improves the uniformity of installation.

[0046] Furthermore, in order to facilitate the matching stability and installation accuracy of the transition sleeve 1 and the component to be installed, the transition sleeve 1 includes a positioning section 7 and a guide section 8 arranged up and down, the positioning section 7 and the guide section 8 have the same inner diameter, the outer diameter of the guide section 8 gradually decreases from top to bottom, and the opening groove 3 is arranged on the side wall of the positioning section 7.

[0047] In this way, the guide section 8 of the transition sleeve 1 can be installed into the hole to be installed, thereby achieving the positioning stability of the transition sleeve 1 during the installation process of the retaining spring.

[0048] Furthermore, there are at least two opening grooves 3, and two adjacent opening grooves 3 are equidistantly arranged. Here, the equidistant arrangement means that the central angle formed by the two adjacent opening grooves 3 is the same as the central angle formed by the other two adjacent opening grooves 3.

[0049] Thereby, the transition sleeve 1 can better limit the position of the pressure rod A4.

[0050] More specifically, the pressure rod A4 includes a coaxially arranged pressure head A41, a positioning rod A42 and a limiting rod A43;

[0051] The limiting pin 5 is arranged on the side wall of the positioning rod, and the limiting pin 5 is arranged perpendicular to the axis of the positioning rod.

[0052] In this way, the pressure head A41 is used by the operator to apply force to the pressure rod A4, the end face of the positioning rod A42 is used to push the retaining spring, and the limiting rod A43 is used to extend into the limiting space under the transition sleeve 1 to prevent the limiting rod A43 from being offset when pushing the retaining spring.

[0053] Furthermore, the pressure rod B6 includes a coaxially arranged pressure head B61, a positioning rod B62, a push head 63 and a limit rod B64;

[0054] The outer diameter of the push head 63 is greater than the outer diameter of the limit rod B64 , and the push head 63 is used to extend into the transition sleeve 1 to push out the retaining spring embedded in the transition sleeve 1 .

[0055] In this way, the pressure head B61 is used to facilitate the operator to apply force to the pressure rod B6, and the push head 63 is used to push the retaining ring, so as to push the retaining ring out of the transition sleeve 1 and install it into the part to be installed. At the same time, the limit rod B64 is extended into the limit space under the transition sleeve 1 to prevent the pressure rod B6 from being offset when the retaining ring is pressed down to install it, thereby affecting the installation accuracy of the retaining ring.

[0056] In addition, please combine Figure 3 and Figure 4 As shown, the utility model also provides a simple piston pin retaining spring press-fitting tool, comprising:

[0057] A base 9, used for carrying the operating mechanism;

[0058] The support 10 is detachably arranged on the top surface of the base 9, and has a vertically penetrating limiting channel 11 inside;

[0059] The transition sleeve 1 is used for loading and transferring the retaining spring, and has a cylindrical through cavity 2 inside, and an open groove 3 penetrating from the top end thereof on the side wall;

[0060] A pressure rod A4, used for installing the retaining ring into the transition sleeve 1, whose side wall is constructed with a limit pin 5 matching the opening groove 3, and a limit rod A43 extending into the limit channel 11;

[0061] The pressure rod B6 is used to push the retaining ring out of the transition sleeve 1, and is also configured with a limit rod B64.

[0062] Then, the base 9 is laid flat, and the transition sleeve 1 is placed on the top of the support 10, so that the support 10 allows the transition sleeve 1 to be in a horizontal and stable state, and then the pressure rod A4 is used to install the retaining ring into the transition sleeve 1, and the limiting rod A43 is used to extend into the limiting channel 11 of the support 10 to prevent the retaining ring from tilting when the limiting rod pushes the retaining ring. At the same time, the limiting pin 5 and the opening groove 3 are used to prevent the pressure rod A4 from axially rotating during the process of pushing the retaining ring and causing the retaining ring to tilt. At the same time, the abutment positioning of the limiting pin 5 and the opening groove 3 is used to ensure that the retaining ring enters the state of the transition sleeve 1, to prevent the bottom end of the retaining ring from leaking out from the bottom end of the transition sleeve 1 during the process of pushing the transition sleeve 1, or to prevent the bottom end of the retaining ring from being too far away from the bottom end of the transition sleeve 1. After the retaining ring is installed into the transition sleeve 1, the support 10 together with the transition sleeve 1 is removed from the top surface of the base 9, and then the piston assembly is placed on the base 9, the transition sleeve 1 is removed from the support 10, and the bottom end of the transition sleeve 1 is aligned with the position where the retaining ring is to be installed. The retaining ring is pushed out of the transition sleeve 1 and installed by the pressure rod B6, and the limit rod B64 is extended into the piston pin at the same time, so as to avoid the displacement of the pressure rod B6 during the process of installing the retaining ring by using the pressure rod B6, thereby affecting the accuracy of the installation.

[0063] Specifically, the top surface of the support 10 is constructed with an inwardly recessed functional groove, and the functional groove includes a sleeve positioning groove 12 and an auxiliary unloading groove 13. The sleeve positioning groove 12 is arranged above the auxiliary unloading groove 13. The aforementioned sleeve positioning groove 12 is used for embedding and positioning the bottom end of the transition sleeve 1. The aforementioned auxiliary unloading groove 13 is used to receive the retaining ring that has escaped from the transition sleeve 1. The inner diameter of the auxiliary unloading groove 13 is the same as the inner diameter of the cylindrical through cavity 2.

[0064] In this way, the support 10 can not only realize the positioning function of the transition sleeve 1, but also, when it is found that there is a problem with the retaining spring and it needs to be pushed out of the transition sleeve 1 for replacement, the pressure rod B6 can be used to push the retaining spring located in the transition sleeve 1 out, so that the retaining spring is pushed into the auxiliary unloading trough 13, thereby avoiding the retaining spring splashing when it is directly pushed out of the transition sleeve 1.

[0065] The guide section 8 of the transition sleeve 1 is embedded in the sleeve positioning groove 12 , the outer diameter of the guide section 8 gradually decreases from top to bottom, and the inner diameter of the sleeve positioning groove 12 gradually increases from bottom to top and matches the outer diameter of the guide section 8 .

[0066] Furthermore, a positioning pin 14 is constructed on the top surface of the base 9 , the top end of the positioning pin 14 extends above the base 9 , the support 10 is inserted on the top surface of the positioning pin 14 , and the top surface of the positioning pin 14 extends into the limiting channel 11 .

[0067] In addition, a shock-absorbing rubber pad 15 is provided between the support 10 and the base 9 .

[0068] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A retaining spring limit transfer device, characterized in that: include: A transition sleeve (1) is used for loading and transferring the retaining spring, and has a cylindrical through cavity (2) inside, and a side wall thereof has an open groove (3) extending through the top end; A pressure rod A (4), used for installing the retaining ring into the transition sleeve (1), and having a side wall thereof provided with a limit pin (5) matching the opening groove (3); The pressure rod B (6) is used to push the retaining ring out of the transition sleeve (1).

2. A retaining spring limit transfer device according to claim 1, characterized in that: The transition sleeve (1) comprises a positioning section (7) and a guide section (8) which are arranged vertically, the positioning section (7) and the guide section (8) having the same inner diameter, the outer diameter of the guide section (8) gradually decreasing from top to bottom, and the opening groove (3) being arranged on a side wall of the positioning section (7).

3. A retaining spring position limiting transfer device according to claim 1 or 2, characterized in that: There are at least two opening slots (3), and two adjacent opening slots (3) are arranged at equal distances.

4. A retaining spring position limiting transfer device according to claim 1, characterized in that: The pressure rod A (4) comprises a pressure head A (41), a positioning rod A (42) and a limiting rod A (43) which are coaxially arranged; The limiting pin (5) is arranged on a side wall of the positioning rod A (41), and the limiting pin (5) is arranged perpendicular to the axis of the positioning rod A (41).

5. The retaining spring position limiting transfer device according to claim 1, characterized in that: The pressing rod B (6) comprises a pressing head B (61), a positioning rod B (62), a pushing head (63) and a limiting rod B (64) which are coaxially arranged; The outer diameter of the push head (63) is greater than the outer diameter of the limit rod B (64), and the push head (63) is used to extend into the transition sleeve (1) to push out the retaining spring embedded in the transition sleeve (1).

6. A simple piston pin retaining spring press-fitting tool, characterized in that: include: A base (9) for carrying the operating mechanism; A support (10) is detachably arranged on the top surface of the base (9), and has an internal structure with a vertically penetrating limiting channel (11); A transition sleeve (1) is used for loading and transferring the retaining spring, and has a cylindrical through cavity (2) inside, and a side wall thereof has an open groove (3) extending through the top end; A pressure rod A (4) is used to install the retaining ring into the transition sleeve (1), and its side wall is configured with a limit pin (5) matching the opening groove (3), and is also configured with a limit rod A (43) extending into the limit channel (11); The pressure rod B (6) is used to push the retaining spring out of the transition sleeve (1), and a limit rod B (64) is also constructed.

7. The simple piston pin retaining spring press-fitting tool according to claim 6, characterized in that: The top surface of the support (10) is configured with an inwardly recessed functional groove, the functional groove comprising a sleeve positioning groove (12) and an auxiliary discharge groove (13), the sleeve positioning groove (12) being arranged above the auxiliary discharge groove (13), the inner diameter of the auxiliary discharge groove (13) being the same as the inner diameter of the cylindrical through cavity (2).

8. The simple piston pin retaining spring press-fitting tool according to claim 7, characterized in that: The guide section (8) of the transition sleeve (1) is embedded in the sleeve positioning groove (12), the outer diameter of the guide section (8) gradually decreases from top to bottom, and the inner diameter of the sleeve positioning groove (12) gradually increases from bottom to top and matches the outer diameter of the guide section (8).

9. The simple piston pin retaining spring press-fitting tool according to claim 6, characterized in that: The top surface of the base (9) is structured with a positioning pin (14), the top end of the positioning pin (14) extends above the base (9), the support (10) is inserted into the top surface of the positioning pin (14), and the top surface of the positioning pin (14) extends into the limiting channel (11).

10. A simple piston pin retaining spring press-fitting tool according to claim 6 or 9, characterized in that: A shock-absorbing rubber pad (15) is provided between the support (10) and the base (9).

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