A tool for assembling a piston connecting rod pin

Abstract

The utility model discloses a kind of tool for piston connecting rod pin assembly, which belongs to piston connecting rod pin assembly technical field, including tool main body, the top surface one side of tool main body is clamped with workpiece, the tool main body includes base frame, and the top surface one side of base frame is fixed with pneumatic control switch, the top surface one end center of base frame is fixed with cylinder frame, and one end center of cylinder frame is connected with striker, the top end of cylinder frame is fixed with lubricating box, and the inside of lubricating box is attached with sponge block. The assembly tool is the main structure carrier and support by base frame, provides stable space for assembly process, and the center of cylinder frame is aligned with positioning groove and clamping groove frame center, the striker of cylinder frame can be opened by cooperating with pneumatic control switch, the pin sleeve is quickly pushed into shaft hole, reduces manpower consumption, and relies on the clamping limiting of clamping groove frame to piston frame, further improves assembly stability, to improve overall assembly efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the field of piston connecting rod pin assembly technology, specifically a tooling for piston connecting rod pin assembly. Background Technology

[0002] The piston connecting rod, also known as the piston rod, is a key transmission component connecting the piston and the crankshaft. Its main function is to convert the linear reciprocating motion of the piston into the rotational motion of the crankshaft, and at the same time, to convert the force acting on the piston into the torque output by the crankshaft to drive the car wheels. It is a transmission component of the engine, transmitting the pressure of combustion gases to the crankshaft, causing the crankshaft to rotate and output power. The piston connecting rod assembly mainly consists of the piston, piston rings, piston pin, connecting rod, and connecting rod bearings. In the common processing of such parts, the connecting rod and piston need to be assembled. During the assembly process, the pin is directly driven into the connecting hole of the connecting rod and piston using an air gun to complete the installation, so that the connecting rod and piston form a partially rotatable shaft connection.

[0003] In the existing assembly process of connecting rods and pistons, the pin is usually sleeved on the air gun head. Then, the operator holds the connecting rod and piston, aligns the shaft hole of the connecting rod with the bearing of the piston, and then inserts the pin sleeve on the air gun head into one side of the shaft hole. Then, the air gun drives the pressure to push the connecting pin into the shaft hole of the connecting rod and piston to complete the installation process.

[0004] During the installation of the connecting rod and piston, the operator mainly holds the piston and connecting rod by hand to keep their shaft holes aligned, and then uses a handheld air gun to drive the pin in. This process is cumbersome. Furthermore, relying solely on hand positioning of the piston and connecting rod makes it difficult to maintain stable alignment during long-term operation, which can easily lead to pin misalignment and other issues, reducing the yield rate. This is not only inefficient but also quite tedious. Therefore, we propose a tooling for piston and connecting rod pin assembly. Utility Model Content

[0005] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0006] The purpose of this utility model is to provide a tooling for assembling piston connecting rod pins to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a tooling for assembling piston connecting rod pins, comprising a tooling body, a workpiece being engaged on one side of the top surface of the tooling body, the tooling body including a base frame, a pneumatic control switch fixed on one side of the top surface of the base frame, a cylinder frame fixed at the center of one end of the top surface of the base frame, a striker connected at the center of one end of the cylinder frame, a lubrication box fixed at the top of the cylinder frame, a sponge block being fitted inside the lubrication box, a positioning groove fixed at the center of the top surface of the base frame, and limiting cavities formed at the centers of both ends of the positioning groove, a slot frame fixed at the other end of the top surface of the base frame, a discharge hole formed at the center of the rear end of the slot frame, a recycling box aligned with the rear end of the slot frame, and a support base fixed on the bottom surface of the base frame.

[0008] Furthermore, the support bases are symmetrically distributed around the bottom surface of the base frame, and the recycling box is fixedly connected to one end of the base frame in an inclined manner.

[0009] Furthermore, the card slot frame, positioning slot, and cylinder frame are fixedly connected to the center of the top surface of the base frame, and the card slot frame, positioning slot, and cylinder frame are arranged sequentially along a straight line.

[0010] Furthermore, the firing pin is connected to the base frame via a cylinder bracket to form a telescopic structure, and the cylinder bracket is connected to a pneumatic control switch.

[0011] Furthermore, the base frame engages with the workpiece via a slot frame, and the center of the slot frame is aligned with the center of the positioning groove.

[0012] Furthermore, the workpiece includes a piston frame, and a connecting rod frame is fitted into the center of the top surface of the piston frame. A shaft hole is opened in the center of the piston frame, a pin sleeve is embedded in the inner wall of the shaft hole, and a pin core is fitted into the inner wall of the pin sleeve. A ejector pin is fitted to one end of the pin sleeve, and a striking pin is aligned on one end of the ejector pin.

[0013] Furthermore, the ejector pin is aligned with the center of the striking pin, and one end of the ejector pin is aligned with the pin sleeve and the shaft hole.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This assembly fixture uses the base frame as the main structural carrier and support, providing a stable space for the assembly process. The center of the cylinder frame is aligned with the center of the positioning groove and the slot frame. It can be used with the pneumatic switch to open the cylinder frame's striker to quickly push the pin into the shaft hole, reducing manpower consumption. At the same time, the slot frame's locking and limiting of the piston frame further improves the assembly stability, thereby improving the overall assembly efficiency and quality. After the piston frame is engaged and limited by the slot bracket, this assembly fixture can be used to align the pin sleeve with the shaft hole. The impact pin is the main impact force, and the ejector pin is used to stably embed the pin sleeve into the shaft hole. The pin core provides stable internal pushing force for the pin sleeve, so that the piston frame and the connecting rod frame are connected. At the same time, the ejector pin can quickly push out the pin core, which is convenient for the assembly of the next set of workpieces. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the tooling body of this utility model; Figure 2 This is a three-dimensional structural diagram of the cylinder frame of this utility model; Figure 3 This is a three-dimensional structural diagram of the card slot frame of this utility model; Figure 4 This is a schematic diagram of the three-dimensional structure of the workpiece of this utility model.

[0016] In the diagram: 1. Tooling body; 101. Base frame; 102. Pneumatic control switch; 103. Cylinder frame; 104. Impact pin; 105. Lubrication box; 106. Sponge block; 107. Positioning groove; 108. Limiting cavity; 109. Slot frame; 110. Discharge hole; 111. Recycling box; 112. Support base; 2. Workpiece; 201. Piston frame; 202. Connecting rod frame; 203. Shaft hole; 204. Pin sleeve; 205. Pin core; 206. Ejector pin. Detailed Implementation

[0017] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0018] It should also be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0019] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies. It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0020] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] This utility model provides, for example Figure 1-4 The tooling for assembling piston connecting rod pins shown includes a tooling body 1. A workpiece 2 is engaged on one side of the top surface of the tooling body 1. The tooling body 1 includes a base frame 101, and a pneumatic switch 102 is fixed on one side of the top surface of the base frame 101. A cylinder frame 103 is fixed at the center of one end of the top surface of the base frame 101, and a firing pin 104 is connected to the center of one end of the cylinder frame 103. A lubrication box 105 is fixed at the top of the cylinder frame 103, and a sponge block 106 is attached inside the lubrication box 105. A positioning groove 107 is fixed at the center of the top surface of the base frame 101, and a limiting cavity 108 is opened at the center of both ends of the positioning groove 107. A slot frame 109 is fixed at the other end of the top surface of the base frame 101. A discharge hole 110 is opened at the center of the rear end of the slot frame 109. A recycling box 111 is aligned with the rear end of the slot frame 109. A support base 112 is fixed on the bottom surface of the base frame 101. To ensure the stability of this assembly fixture during the assembly of workpiece 2, such as Figure 1-3 As shown, this assembly fixture can use the base frame 101 as the main structural carrier and support to provide a stable space for the assembly process. The center of the cylinder frame 103 is aligned with the center of the positioning groove 107 and the slot frame 109. It can work with the pneumatic switch 102 to open the firing pin 104 of the cylinder frame 103 to quickly push the pin sleeve 204 into the shaft hole 203, reducing manpower consumption. At the same time, the engagement and limiting of the piston frame 201 by the slot frame 109 further improves the assembly stability, thereby improving the overall assembly efficiency and quality.

[0022] like Figure 4 As shown, workpiece 2 includes piston frame 201, and connecting rod frame 202 is fitted into the center of the top surface of piston frame 201. Piston frame 201 has a shaft hole 203 in the center. A pin sleeve 204 is embedded in the inner wall of shaft hole 203, and a pin core 205 is fitted into the inner wall of pin sleeve 204. A ejector pin 206 is sleeved on one end of pin sleeve 204, and a striker pin 104 is aligned on one end of ejector pin 206. To ensure the stability of the striker 104 during the assembly of the piston holder 201 and connecting rod holder 202, such as Figure 4 As shown, this assembly fixture can align the pin sleeve 204 with the shaft hole 203 after the piston frame 201 is engaged and limited by the slot bracket 109. The impact pin 104, together with the ejector pin 206, stably embeds the pin sleeve 204 into the shaft hole 203. The pin core 205 provides stable internal pushing force for the pin sleeve 204, so that the piston frame 201 and the connecting rod frame 202 are connected. At the same time, the ejector pin 206 can quickly push out the pin core 205, which is convenient for the assembly of the next set of workpieces 2.

[0023] In summary, when using this assembly fixture, the user first applies lubricating oil to one end of the pin sleeve 204 to be installed, which is then soaked in lubricating oil on the sponge block 106 inside the lubrication box 105. Next, the pin core 205 is inserted into the pin sleeve 204, and simultaneously the ejector pin 206 is inserted into the port, so that the end of the ejector pin 206 engages with the port of the pin sleeve 204 and simultaneously adheres to the pin core 205. Then, the bottom of the piston holder 201 is engaged and positioned with the slot holder 109, while the angle of the ejector pin 206 is aligned with the center of the limiting cavity 108 of the positioning groove 107, completing the installation. Afterwards, the user can press the pneumatic control switch 102. At this time, the connected cylinder frame 103 drives the impact pin 104 to impact the ejector pin 206. Subsequently, the ejector pin 206 generates an ejection force on the pin sleeve 204 and the pin core 205 until the pin sleeve 204 is embedded in the shaft hole 203 of the piston frame 201 and the connecting rod frame 202. At the same time, after the pin sleeve 204 is in place, as the ejector pin 206 continues to impact, the pin core 205 on its inner wall will also be pushed out synchronously. As it falls into the recycling box 111 through the discharge hole 110, the recycling is completed, and the next set of assembly operations can be carried out. The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in the embodiments of this disclosure is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A tooling for assembling piston connecting rod pins, comprising a tooling body (1), characterized in that, The workpiece (2) is engaged on one side of the top surface of the tooling body (1). The tooling body (1) includes a base frame (101), and a pneumatic switch (102) is fixed on one side of the top surface of the base frame (101). A cylinder frame (103) is fixed at the center of one end of the top surface of the base frame (101), and a firing pin (104) is connected to the center of one end of the cylinder frame (103). A lubrication box (105) is fixed at the top of the cylinder frame (103), and a lubricating agent is attached to the inside of the lubrication box (105). The base frame (101) has a positioning groove (107) fixed at the center of its top surface, and a limiting cavity (108) is opened at the center of both ends of the positioning groove (107). The other end of the top surface of the base frame (101) is fixed with a card slot frame (109). The rear end of the card slot frame (109) is provided with a discharge hole (110). The rear end of the card slot frame (109) is aligned with a recycling box (111). The bottom surface of the base frame (101) is fixed with a support base (112).

2. The tooling for assembling a piston connecting rod pin according to claim 1, characterized in that, The support base (112) is symmetrically distributed around the bottom surface of the base frame (101), and the recycling box (111) is inclined and fixedly connected to one end of the base frame (101).

3. The tooling for assembling a piston connecting rod pin according to claim 1, characterized in that, The card slot frame (109), positioning slot (107), and cylinder frame (103) are fixedly connected to the center of the top surface of the base frame (101), and the card slot frame (109), positioning slot (107), and cylinder frame (103) are arranged in a straight line.

4. The tooling for assembling a piston connecting rod pin according to claim 1, characterized in that, The striker (104) forms a telescopic structure with the base frame (101) via the cylinder frame (103), and the cylinder frame (103) is connected to the pneumatic switch (102).

5. The tooling for assembling a piston connecting rod pin according to claim 1, characterized in that, The base frame (101) engages with the workpiece (2) via the slot frame (109), and the center of the slot frame (109) is aligned with the center of the positioning groove (107).

6. The tooling for assembling a piston connecting rod pin according to claim 1, characterized in that, The workpiece (2) includes a piston frame (201), and a connecting rod frame (202) is fitted into the center of the top surface of the piston frame (201). A shaft hole (203) is opened in the center of the piston frame (201). A pin sleeve (204) is embedded in the inner wall of the shaft hole (203), and a pin core (205) is fitted into the inner wall of the pin sleeve (204). A ejector pin (206) is sleeved at one end of the pin sleeve (204), and a striker pin (104) is aligned on one side of the end of the ejector pin (206).

7. The tooling for assembling a piston connecting rod pin according to claim 6, characterized in that, The ejector pin (206) is aligned with the center of the striker pin (104), and one end of the ejector pin (206) is aligned with the pin sleeve (204) and the shaft hole (203).

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