A quick positioning and pinning device

Abstract

The utility model relates to the field of mechanical device and quick positioning press pin, relates to a quick positioning and wear pin device, including upper die plate, lower die plate and rolling guide piece, and the lower end of rolling guide piece is connected with lower die plate, and the upper end is with upper module sliding fit, and spring no.

Description

Technical Field

[0001] This utility model relates to the field of mechanical devices and quick positioning pins, and to a quick positioning and pin insertion device designed for interference fits, enabling quick and accurate positioning of pins. Background Technology

[0002] rocker arm assembly such as Figure 1 As shown, during the assembly of the rocker arm assembly, the pins need to pass through the bearing and rocker arm hole respectively, both of which are interference fits. It is also necessary to ensure that the exposed length of the pins at both ends is consistent. Currently, the assembly is done manually. During manual assembly, it is not easy to align the pins with the holes, the length of the pins at both ends cannot be precisely controlled, the pin surface is easily damaged, and the assembly efficiency is low. Utility Model Content

[0003] The purpose of this utility model is to provide a quick positioning and pin insertion device to solve problems such as difficulty in aligning the pins of the rocker arm assembly with the bearings and rocker arm holes, and the inability to control the exposed length of the pins at both ends during assembly.

[0004] The technical solution of this utility model: A quick positioning and pin insertion device includes an upper template 11, a lower template 4, and a rolling guide 1. The lower end of the rolling guide 1 is connected to the lower template 4, and the upper end is slidably engaged with the upper template 11. A second spring 10 is sleeved on the rolling guide 1. The upper end of the second spring 10 abuts against the upper template 11, and the lower end abuts against the lower template 4. A pad 5 is provided on the lower template 4, and a guide rod 14 is provided on the pad 5. A guide block 7 is provided on the guide rod 14. A through hole is provided inside the guide block 7. An upper top pin 9 is provided on the lower end face of the upper template 11. The upper top pin 9 is directly opposite the through hole of the guide block 7 and can be inserted into the through hole of the guide block 7 under the action of the upper template. A second through hole is provided inside the lower template 4, and a first spring 2 is provided inside the second through hole. The rod end of the lower top pin 6 passes through the pad 5 and is slidably engaged with the through hole of the guide block 7. The nut end of the lower top pin 6 is slidably engaged with the second through hole and is supported by the first spring 2.

[0005] Furthermore, the upper pin 9 is fixed to the upper template 11 by screws 8.

[0006] Furthermore, the pad 5 is positioned onto the lower template 4 by the pin 13, and the pad 5 is fixed onto the lower template 4 by the screw 12.

[0007] Furthermore, a screw plug 3 is provided at the lower part of the through hole 2 inside the lower template 4, and the screw plug 3 abuts against the lower end of the spring 2.

[0008] Furthermore, the upper top pin 9 includes a pin rod and a positioning block. The pin rod can be inserted into the through hole of the guide block 7 under the drive of the upper template. The diameter of the limiting block is larger than the inner diameter of the through hole of the guide block 7.

[0009] Furthermore, the area between the lower end face of the guide block 7 and the pad 5 is the mounting area for the rocker arm assembly.

[0010] Beneficial effects This invention utilizes a lower top pin for quick positioning and fixing of the rocker arm and bearing. The lower top pin can move up and down via a spring, and a guide block ensures that the pin is aligned with the rocker arm and bearing hole. When the pin is pressed in, the lower top pin moves downward to ensure smooth insertion. The guide block limits the pin to ensure that the exposed lengths at both ends are consistent. The implementation of this invention improves the pin insertion efficiency of the rocker arm assembly by 3 times and avoids damage to the pin surface. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A schematic diagram along direction A (excluding the detachable rolling guide 1, screw 8, upper top pin 9, spring 2 10, and upper template 11). Detailed Implementation

[0012] The invention will now be further described with reference to the accompanying drawings: The device of this utility model includes components such as a detachable rolling guide, an upper template, a lower template, an upper top pin, a lower top pin, a spring, a guide block, and a guide rod.

[0013] The detachable rolling guide 1 passes through the spring 10. Both ends of the detachable rolling guide 1 are connected to the upper template 11 and the lower template 4, respectively. The upper template 11 can slide on the detachable rolling guide 1.

[0014] The upper pin 9 is fixed to the upper template 11 by the screw 8. The pin 13 positions the pad 5 on the lower template 4. The guide rod 14 passes through the guide block 7 and the pad 5 and is pressed into the hole of the lower template 4. The guide block is installed on the guide rod, and the pad 5 is fixed to the lower template 4 by the screw 12.

[0015] Insert the lower top pin 6 and spring 2 into the hole of the lower template 4 respectively. The lower top pin 6 passes through the hole of the pad 5, and the screw plug 3 is screwed into the hole of the lower template 4 to fix the spring 2.

[0016] In use, first thread the rocker arm, shim, and bearing onto the lower pin 6 in sequence. Then, insert the pin into the hole of the guide block 7. Use a press to press the upper template 11. The upper template 11 moves downward along the detachable rolling guide 1, causing the upper top pin 9 to move downward, gradually pressing the pin into the bearing and rocker arm holes. The lower top pin 6 moves downward as well. When the end face of the upper top pin 9 contacts the end face of the guide block 7, the pressing is complete. Release the pressure from the press, and the upper template 11 returns to its initial position under the action of the spring 10. Remove the rocker arm assembly, and the lower top pin 6 resets under the action of the spring 2. The small shafts at the ends of the upper top pin 9 and lower top pin 6 are fitted with the countersunk holes at both ends of the pin with a small clearance. The outer circle of the lower top pin 6 is fitted with the bearing and rocker arm holes with a small clearance. The hole of the guide block 7 is fitted with the pin with a small clearance. During the pin insertion process, the lower top pin 6, lower top pin 9, and guide block 7 are used to position and ensure that the pin is aligned with the bearing and rocker arm holes, allowing the pin to be smoothly pressed into the bearing and rocker arm holes in sequence, effectively avoiding damage to parts caused by misalignment. When inserting the pin, the end face 1 of the upper top pin 9 contacts and limits the contact with the end face 2 of the guide block 7, preventing the upper top pin 9 from moving further downward, ensuring that the exposed lengths at both ends of the pin are consistent after insertion.

[0017] This utility model of a quick positioning and pin pressing device has been put into production and use. The pin insertion efficiency has been increased by 3 times, and the damage rate of parts has been reduced from the original 18% to 0. It effectively solves the problems of difficulty in aligning the pins of the rocker arm assembly, easy damage to the pins, and low efficiency.

Claims

1. A rapid positioning and pin-threading device, characterized in that, The assembly includes an upper template, a lower template, and a rolling guide. The lower end of the rolling guide is connected to the lower template, and the upper end slides with the upper template. A second spring is sleeved on the rolling guide, with the upper end of the second spring abutting against the upper template and the lower end abutting against the lower template. A pad is provided on the lower template, and a guide rod is provided on the pad. A guide block is provided on the guide rod, and a through hole is provided inside the guide block. An upper top pin is provided on the lower end face of the upper template, and the upper top pin is directly opposite the through hole of the guide block. The upper top pin can be inserted into the through hole of the guide block under the action of the upper template. A second through hole is provided inside the lower template, and a first spring is provided inside the second through hole. The rod end of the lower top pin passes through the pad and slides with the through hole of the guide block, and the nut end of the lower top pin slides with the second through hole and is supported by the first spring.

2. The rapid positioning and pin-threading device according to claim 1, characterized in that, The top pin is fixed to the upper template with screws.

3. The rapid positioning and pin-threading device according to claim 1, characterized in that, The pad is positioned onto the lower template by pins and then fixed onto the lower template by screws.

4. The rapid positioning and pin-threading device according to claim 1, characterized in that, A screw plug is installed at the lower part of the second through hole inside the lower template, and the screw plug abuts against the lower end of the spring.

5. The rapid positioning and pin-threading device according to claim 1, characterized in that, The upper top pin includes a pin rod and a positioning block. The pin rod can be inserted into the through hole of the guide block under the action of the upper template. The diameter of the limiting block is larger than the inner diameter of the through hole of the guide block.

6. The rapid positioning and pin-threading device according to claim 1, characterized in that, The area between the lower end face of the guide block and the pad is the mounting area for the rocker arm assembly.

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