Air cylinder stretching-out anti-return mechanism

Abstract

The utility model discloses a cylinder extension anti-return mechanism which comprises a positioning pin, a guide rod cylinder, a cylinder seat, a mounting frame, a push rod seat, a push rod, a strong magnet and a handle driving mechanism, the cylinder seat is mounted on the mounting frame, the guide rod cylinder is mounted on the cylinder seat, and the positioning pin is mounted on a fixing plate of the guide rod cylinder; the push rod seat is located on the side, away from the guide rod air cylinder, of the air cylinder seat, the push rod is installed on the side, facing the air cylinder seat, of the push rod seat, and the push rod and a guide rod of the guide rod air cylinder are coaxially arranged and can be inserted into a guide rod receding hole of the guide rod air cylinder. The handle driving mechanism drives the push rod seat to drive the push rod to move along the axis of a guide rod receding hole of the guide rod air cylinder. The strong magnet is fixed to the side, facing the air cylinder base, of the push rod base and can be attracted to the air cylinder base. According to the utility model, the strong magnet is arranged on the push rod seat and is adsorbed on the air cylinder seat, so that the positioning pin is locked, the sliding of the positioning pin caused by the sliding of the piston of the air cylinder before ventilation is prevented, and the problem that the product quality is influenced due to inaccurate positioning of the positioning pin is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a cylinder extension and anti-retraction mechanism. Background Art

[0002] The mass production of products involves a wide variety of fixtures. In the production of automotive welding products, manually actuated locating pins are frequently required for locking and unlocking. Existing locating pins require a pneumatic cylinder to apply force after manual actuation. However, in actual use, vertically or diagonally pointing locating pins are prone to sliding downward because the cylinders fail to lock after they are pushed into position. This can lead to inaccurate product positioning and compromise product quality. Utility Model Content

[0003] The utility model provides a cylinder extension anti-retraction mechanism to solve the above technical problems.

[0004] In order to achieve the above purpose, the technical solution of the utility model is:

[0005] A cylinder extension anti-return mechanism comprises: a locating pin, a guide rod cylinder, a cylinder seat, a mounting bracket, a push rod seat, a push rod, a strong magnet and a handle driving mechanism; the cylinder seat is mounted on the mounting bracket, the guide rod cylinder is mounted on the cylinder seat, and the locating pin is mounted on the fixing plate of the guide rod cylinder; the push rod seat is located on the side of the cylinder seat away from the guide rod cylinder, the push rod is mounted on the side of the push rod seat facing the cylinder seat, the push rod is coaxially arranged with the guide rod of the guide rod cylinder and can be inserted into the guide rod clearance hole of the guide rod cylinder; the handle driving mechanism drives the push rod seat and then drives the push rod to move along the axis of the guide rod clearance hole of the guide rod cylinder; the strong magnet is fixed on the side of the push rod seat facing the cylinder seat, and the strong magnet can be adsorbed on the cylinder seat.

[0006] Preferably, the outer diameter of the push rod matches the diameter of the guide rod clearance hole of the guide rod cylinder.

[0007] Preferably, the push rod seat is arranged parallel to the cylinder seat, and the push rod is arranged perpendicular to the push rod seat.

[0008] Preferably, the handle drive mechanism includes: a bracket, a rocker and a connecting rod; one end of the bracket is fixedly connected to the cylinder seat, and the other end is rotatably connected to the rocker on the first rotation axis, and the first rotation axis is located between the two ends of the rocker; one end of the connecting rod is rotatably connected to the push rod seat, and the other end is rotatably connected to one end of the rocker toward the push rod seat.

[0009] Preferably, when the strong magnet is adsorbed on the cylinder seat, the connecting rod is parallel to the movement direction of the push rod, and the center of gravity of the rocker arm and the first rotation axis are located in the same vertical plane.

[0010] Preferably, a handle is provided at one end of the rocker away from the push rod seat.

[0011] Preferably, the positioning pin is mounted on a regulating block, and the regulating block is fixedly connected to a fixing plate of the guide rod cylinder.

[0012] Preferably, a protective cover is provided on the fixing plate of the guide rod cylinder, and the protective cover covers the guide rod and the piston rod of the guide rod cylinder.

[0013] Beneficial effects:

[0014] The present application discloses a cylinder extension anti-retraction mechanism which achieves locking of the locating pin by arranging a strong magnet on the push rod seat and adsorbing the strong magnet on the cylinder seat, thereby preventing the locating pin from slipping due to the downward movement of the cylinder piston before ventilation, thereby avoiding the problem of product quality being affected by inaccurate positioning of the locating pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 This is a structural diagram of a cylinder extension anti-retraction mechanism disclosed in the utility model;

[0017] Figure 2 for Figure 1 Cross-sectional view of AA in the figure.

[0018] 1. Locating pin; 2. Guide rod cylinder; 21. Fixing plate; 31. Cylinder seat; 32. Mounting bracket; 41. Push rod seat; 42. Push rod; 5. Strong magnet; 61. Bracket; 62. Rocker; 63. Connecting rod; 7. Regulating block; 8. Protective cover. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0020] A cylinder extension anti-return mechanism, such as Figure 1 and Figure 2As shown, it includes: a locating pin 1, a guide rod cylinder 2, a cylinder seat 31, a mounting bracket 32, a push rod seat 41, a push rod 42, a strong magnet 5 and a handle driving mechanism; the cylinder seat 31 is mounted on the mounting bracket 32, the guide rod cylinder 2 is mounted on the cylinder seat 31, and the locating pin 1 is mounted on the fixing plate 21 of the guide rod cylinder 2; the push rod seat 41 is located on the side of the cylinder seat 31 away from the guide rod cylinder 2, and the push rod 42 is mounted on the side of the push rod seat 41 facing the cylinder seat 31, and the push rod 42 is coaxially arranged with the guide rod of the guide rod cylinder 2 and can be inserted into the guide rod clearance hole of the guide rod cylinder 2; the handle driving mechanism drives the push rod seat 41 and then drives the push rod 42 to move along the axis of the guide rod clearance hole of the guide rod cylinder 2; the strong magnet 5 is fixed on the side of the push rod seat 41 facing the cylinder seat 31, and the strong magnet 5 can be adsorbed on the cylinder seat 31. The handle drive mechanism of the anti-retraction mechanism of the present application drives the push rod seat 41 and then drives the push rod 42 to move synchronously. The push rod 42 moves along the axis of the guide rod yielding hole of the guide rod cylinder 2 and drives the guide rod of the guide rod cylinder 2 to move, thereby driving the locating pin 1 to move. The anti-retraction mechanism of the present application is provided with a strong magnet 5 on the push rod seat 41. When the locating pin 1 moves to a specific position, the distance between the push rod seat 41 and the cylinder seat 31 is reduced, and the strong magnet 5 is adsorbed on the cylinder seat 31, so that the push rod 42 presses against the guide rod of the guide rod cylinder 2 to achieve the locking of the locating pin 1, preventing the locating pin 1 from slipping due to the downward movement of the piston of the guide rod cylinder 2 before ventilation, thereby avoiding the problem of affecting product quality due to inaccurate positioning of the locating pin 1.

[0021] Specifically, the guide rod cylinder 2 can adopt the AirTac TCL, TCM series three-axis cylinder.

[0022] Preferably, the outer diameter of the push rod 42 matches the aperture of the guide rod clearance hole of the guide rod cylinder 2, so that the guide rod clearance hole of the guide rod cylinder 2 guides the push rod 42 and avoids excessive shaking of the push rod seat 41 and the push rod 42.

[0023] Preferably, the push rod seat 41 is arranged parallel to the cylinder seat 31 , and the push rod 42 is arranged perpendicular to the push rod seat 41 , so as to facilitate the processing, installation and debugging of the push rod seat 41 and the push rod 42 .

[0024] Specifically, after the positioning pin 1 moves to a specific position, a 15 mm gap is reserved between the push rod seat 41 and the cylinder seat 31 , and the diameter of the strong magnet 5 is 20 mm and the height is 10 mm.

[0025] Preferably, the handle drive mechanism includes a bracket 61, a rocker 62, and a connecting rod 63. One end of the bracket 61 is fixedly connected to the cylinder base 31, and the other end is rotatably connected to the rocker 62 about a first rotation axis, which is located between the two ends of the rocker 62. One end of the connecting rod 63 is rotatably connected to the push rod base 41, and the other end is rotatably connected to the end of the rocker 62 facing the push rod base 41. The bracket 61, rocker 62, connecting rod 63, push rod base 41, push rod 42, and cylinder base 31 together constitute a rocker slider mechanism. Manually pushing and pulling the rocker 62 enables the push rod 42 to move within the guide rod clearance hole of the guide rod cylinder 2.

[0026] Preferably, when the strong magnet 5 is adsorbed on the cylinder seat 31, the connecting rod 63 is parallel to the movement direction of the push rod 42, ensuring that the direction of the force exerted by the connecting rod 63 on the push rod seat 41 is along the movement direction of the push rod 42; the center of gravity of the rocker 62 and the first rotation axis are located in the same vertical plane, avoiding the gravity of the rocker 62 from generating a torque around the first rotation axis, so as to reduce the magnetic force required to be generated by the strong magnet 5, which is conducive to reducing costs.

[0027] Preferably, a handle is provided at one end of the rocker 62 away from the push rod seat 41 to improve the comfort of holding.

[0028] Preferably, the positioning pin 1 is installed on the regulating block 7, and the regulating block 7 is fixedly connected to the fixing plate 21 of the guide rod cylinder 2. The shape of the regulating block 7 can be set to various shapes according to the specific requirements of the product to prevent interference.

[0029] Preferably, a protective cover 8 is provided on the fixed plate 21 of the guide rod cylinder 2, which covers the guide rod and piston rod of the guide rod cylinder 2 to prevent debris, dust, oil, etc. from splashing onto the guide rod and piston rod of the guide rod cylinder 2 during processing, thereby affecting the service life of the guide rod cylinder 2.

[0030] Working principle of this application device:

[0031] Step 1. Pull the joystick and swing it into place;

[0032] Step 2: The push rod seat drives the strong magnet to reduce the distance between it and the cylinder seat, and the fixed plate of the guide rod cylinder drives the positioning pin to move;

[0033] Step 3: The strong magnet generates magnetic attraction to adsorb on the cylinder seat, and the positioning pin moves into place; the magnetic attraction generated by the strong magnet is greater than the downward force generated by gravity on the guide rod cylinder, preventing the positioning pin from slipping;

[0034] Step 4: Press the start button to ventilate the guide cylinder and apply force to the positioning pin.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention 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 deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cylinder extension anti-retraction mechanism, characterized in that: include: Positioning pin (1), guide rod cylinder (2), cylinder seat (31), mounting frame (32), push rod seat (41), push rod (42), strong magnet (5) and handle driving mechanism; The cylinder seat (31) is mounted on the mounting frame (32), the guide rod cylinder (2) is mounted on the cylinder seat (31), and the positioning pin (1) is mounted on the fixing plate (21) of the guide rod cylinder (2); The push rod seat (41) is located on a side of the cylinder seat (31) away from the guide rod cylinder (2), and the push rod (42) is installed on a side of the push rod seat (41) facing the cylinder seat (31). The push rod (42) is coaxially arranged with the guide rod of the guide rod cylinder (2) and can be inserted into the guide rod clearance hole of the guide rod cylinder (2); The handle driving mechanism drives the push rod seat (41) and then drives the push rod (42) to move along the axis of the guide rod yielding hole of the guide rod cylinder (2); The strong magnet (5) is fixed on the side of the push rod seat (41) facing the cylinder seat (31), and the strong magnet (5) can be adsorbed on the cylinder seat (31).

2. A cylinder extension anti-retraction mechanism according to claim 1, characterized in that: The outer diameter of the push rod (42) matches the diameter of the guide rod clearance hole of the guide rod cylinder (2).

3. The cylinder extension anti-retraction mechanism according to claim 1, characterized in that: The push rod seat (41) is arranged parallel to the cylinder seat (31), and the push rod (42) is arranged perpendicular to the push rod seat (41).

4. A cylinder extension anti-retraction mechanism according to claim 1, characterized in that: The handle driving mechanism comprises: a bracket (61), a rocker (62) and a connecting rod (63); one end of the bracket (61) is fixedly connected to the cylinder seat (31), and the other end is rotatably connected to the rocker (62) at a first rotation axis, and the first rotation axis is located between the two ends of the rocker (62); one end of the connecting rod (63) is rotatably connected to the push rod seat (41), and the other end is rotatably connected to the rocker (62) toward one end of the push rod seat (41).

5. The cylinder extension anti-retraction mechanism according to claim 4, characterized in that: When the strong magnet (5) is adsorbed on the cylinder seat (31), the connecting rod (63) is parallel to the movement direction of the push rod (42), and the center of gravity of the rocker (62) and the first rotation axis are located in the same vertical plane.

6. A cylinder extension anti-retraction mechanism according to claim 4, characterized in that: A handle is provided at one end of the rocker (62) away from the push rod seat (41).

7. The cylinder extension anti-retraction mechanism according to claim 1, characterized in that: The positioning pin (1) is mounted on a regulating block (7), and the regulating block (7) is fixedly connected to a fixing plate (21) of the guide rod cylinder (2).

8. The cylinder extension anti-retraction mechanism according to claim 1, characterized in that: A protective cover (8) is provided on the fixing plate (21) of the guide rod cylinder (2), and the protective cover (8) covers the guide rod and the piston rod of the guide rod cylinder (2).

Images