CN201089148Y - Simple spiral pin puller - Google Patents

Abstract

The utility model relates to a pin puller. A simple spiral pin puller is characterized by comprising a handle nut (1), a guide key (3), a sleeve (4), a pull rod (5) and a screw rod (6), wherein the external thread of the lower end part of the screw rod (6) is matched with the internal thread in the internal thread hole of a positioning pin (7) to be pulled; the upper end part of the screw rod (6) is in threaded connection with the lower end part of the pull rod (5); the sleeve (4) is sleeved on the pull rod (5), a guide groove is formed in the pull rod (5) along the axial direction, a guide key hole is formed in the sleeve (4) along the direction vertical to the axial line, one end of the guide key (3) is located in the guide groove of the pull rod (5), and the other end of the guide key (3) is located in the guide key hole of the sleeve (4); the upper end part of the pull rod (5) is screwed into the internal thread hole of the handle nut (1) to form a screw rod pair, and the handle nut (1) is positioned above the sleeve (4). The utility model has the characteristics of pull out that the round pin is efficient, easy operation, pull out the round pin laborsaving, the security is good.

Description

A Simple Spiral Pin Puller

technical field

The utility model relates to a pin puller.

Background technique

In various fixtures, molds and other process equipment or equipment, in order to ensure the positioning accuracy between parts and components, it is necessary to use positioning pins for positioning, but in some parts the positioning pins are installed in blind holes. To take out the positioning pin, generally use the internal thread positioning pin, and use the internal thread to take out the positioning pin. At present, the ram-type pin puller is mainly used to remove the internal thread positioning pin. This method is operated by knocking with manual force. It is troublesome to use, labor-intensive, easy to drop, and has certain potential safety hazards. , and its impact force can easily damage the positioning pin, and eventually the positioning pin cannot be taken out.

Contents of the invention

The purpose of the utility model is to provide a simple screw-type pin puller with high pin pulling efficiency and good safety.

In order to achieve the above object, the technical solution of the utility model is: a simple screw-type pin puller, which is characterized in that it includes a handle nut 1, a guide key 3, a sleeve 4, a pull rod 5, a screw rod 6, and the lower end of the screw rod 6 The external thread of the screw rod 6 is matched with the internal thread in the internal screw hole of the positioning pin 7 to be pulled out. When the pin is pulled out, the lower end of the screw rod 6 is screwed into the internal thread hole of the positioning pin 7; The lower end is threadedly connected; the sleeve 4 is set on the pull rod 5, and the pull rod 5 has a guide groove along the axial direction, and the sleeve 4 is provided with a guide key hole along the vertical axis, and one end of the guide key 3 is located in the guide groove of the pull rod 5 , the other end of the guide key 3 is located in the guide key hole of the sleeve 4;

The pull rod 5 is covered with a washer 2 , and the washer 2 is located between the handle nut 1 and the sleeve 4 .

The utility model abandons the traditional ram-type pin pulling principle, and converts the rotational motion of the nut into the linear motion of the screw rod by adding a guide key to the nut (handle nut 1) and the screw rod, and can be pulled out by applying a small pulling force. The positioning pin can effectively improve the efficiency of pin removal, the operation is simple, the pin removal is labor-saving, and the problem of potential safety hazards is solved; at the same time, the utility model only needs to replace the pull rod and the screw rod (galvanized screw rod) to realize internal threads of different sizes and specifications The extraction function of the positioning pin. Both ends of the tie rod can be designed as interfaces connected with the screw rod, reducing the number of varieties.

Description of drawings

Fig. 1 is a structural representation of the utility model

Fig. 2 (1) is the first step diagram of the utility model operation process

Fig. 2 (2) is the second step diagram of the utility model operation process

Fig. 2 (3) is the third step figure of the utility model operation process

Among the figure: 1-handle nut, 2-washer, 3-guide key, 4-sleeve, 5-pull rod, 6-screw rod, 7-locating pin, 8-equipment provided with positioning pin.

Detailed ways

As shown in Figure 1, a simple screw-type pin puller is composed of a handle nut 1, a washer 2, a guide key 3, a sleeve 4, a pull rod 5, and a screw 6. The screw 6 is a galvanized screw, and the screw 6 The lower end is provided with an external thread, and the external thread of the lower end of the screw rod 6 is matched with the internal thread in the internal screw hole of the positioning pin 7 to be pulled out. When the pin is pulled out, the lower end of the screw rod 6 is screwed into the internal thread of the positioning pin 7 In the hole; the lower end of the pull rod 5 is provided with an internally threaded hole (both ends of the pull rod 5 can be provided with an internally threaded hole), and the upper end of the screw rod 6 is provided with an external thread, and the external thread on the upper end of the screw rod 6 is consistent with that of the pull rod 5 The internal threads in the internally threaded holes are matched, and the upper end of the screw rod 6 is screwed into the internally threaded hole at the lower end of the pull rod 5 (that is, the upper end of the screw rod 6 is threadedly connected with the lower end of the pull rod 5); the sleeve 4 is sleeved on the pull rod 5 Above, the tie rod 5 is provided with a guide groove in the axial direction, and the sleeve 4 is provided with a guide key hole along the vertical axis. in the guide key hole; the pull rod 5 is provided with an external thread, the handle nut 1 is provided with an internal thread hole in the axial direction, the external thread of the pull rod 5 is matched with the internal thread in the internal thread hole of the handle nut 1, and the upper end of the pull rod 5 passes through The internally threaded hole of the handle nut 1 is threadedly connected with the handle nut 1 (that is, the upper end of the pull rod 5 is screwed into the internally threaded hole of the handle nut 1 to form a screw pair), and the handle nut 1 is positioned above the sleeve 4 . The pull rod 5 is covered with a washer 2 , and the washer 2 is located between the handle nut 1 and the sleeve 4 .

Figure 2(1) is the first step, Figure 2(2) is the second step, and Figure 2(3) is the third step in the pin removal process. The first step is to thread the screw rod 6 and the pull rod 5, and screw the lower end of the screw rod 6 into the internal thread hole of the positioning pin 7; the second step is to screw the handle nut 1, washer 2, guide key 3, sleeve 4, The pull rod 5 is assembled in place, and the lower end of the sleeve 4 is against the surface of the equipment 8 provided with the positioning pin; the third step is to turn the handle nut 1 to convert the rotational motion of the nut into the linear motion of the pull rod, and the positioning pin is driven by the screw rod to move axially. Move until the alignment pins are removed.

Claims (2)

1. A simple screw type pin puller is characterized in that it includes a handle nut (1), a guide key (3), a sleeve (4), a pull rod (5), a screw rod (6), and the lower end of the screw rod (6) The external thread of the part is matched with the internal thread in the internal screw hole of the positioning pin (7) to be pulled out. When pulling the pin, the lower end of the screw rod (6) is screwed into the internal thread hole of the positioning pin (7); the screw rod ( The upper end of 6) is threadedly connected with the lower end of the pull rod (5); the sleeve (4) is sleeved on the pull rod (5), the pull rod (5) has a guide groove along the axial direction, and the sleeve (4) is along the vertical axis direction A guide key hole is provided, one end of the guide key (3) is located in the guide groove of the pull rod (5), and the other end of the guide key (3) is located in the guide key hole of the sleeve (4); The upper end is screwed into the internally threaded hole of the handle nut (1) to form a screw pair, and the handle nut (1) is positioned above the sleeve (4). 2. A simple screw pin puller according to claim 1, characterized in that: the pull rod (5) is covered with a washer (2), and the washer (2) is located between the handle nut (1) and the sleeve (4) between.

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