Tolerance type hook pin clamping air cylinder with dustproof function
By introducing a dustproof copper sleeve and guide block structure into the hook-pin clamping cylinder, the problem of insufficient dustproof performance in the prior art is solved, achieving dustproof effect and a larger tolerance range under complex working conditions, and extending the service life of the cylinder.
Patent Information
- Application Number
- CN202423280873.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing hook-pin clamping cylinders lack dustproof performance under complex working conditions, resulting in a shortened cylinder lifespan and difficulty in adapting to various plate parts with different thicknesses and large deviations, thus failing to meet the usage requirements of complex working conditions.
A tolerance-type hook clamping cylinder with dustproof function was designed. By setting a dustproof copper sleeve between the hook and the internal chamber, the piston rod cooperates with the guide block to realize the rotational movement to reduce the gap. A chip discharge groove is set on the shell to discharge dust. Combined with the grooved guide rail and roller structure of the guide block, the stability of the hook movement trajectory and the dustproof effect are ensured.
It effectively prevents dust from entering the cylinder, extends the cylinder's service life, adapts to clamping requirements under various working conditions, and has a large tolerance range and good dustproof performance.
Smart Images
Figure CN223524117U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to air cylinder structure technical field especially, relate to a kind of tolerance type hook pin clamping air cylinder with dustproof function. BACKGROUND
[0002] In automobile welding or other production workshop, in automobile welding assembly process, welding processing, large workpiece positioning etc. Often use air cylinder with positioning and locking function simultaneously, due to complex working condition leads to and satisfy multiple use demand application characteristics, so the air cylinder used has the following requirements:
[0003] ①Volume is small, with multiple installation methods to adapt to complex installation application environment.
[0004] ②Stable structure, high reliability, can be accompanied by self-locking function, to prevent clamping workpiece from loosening and causing adverse consequences.
[0005] ③Need to have large tolerance range, to adapt to complex working conditions of multiple plate and workpiece deviation.
[0006] In prior art, the device capable of clamping includes rotary clamping air cylinder, zero rotation air cylinder and lever clamping air cylinder.The hook pin clamping air cylinder on the market has complex structure, low stability, is difficult to adapt to complex working conditions of multiple different plate thickness in automobile welding, has small application range, large gap between air cylinder mechanisms, and dust is easy to enter the inside of cylinder body.
[0007] Existing hook pin clamping air cylinder is widely used in automobile industry, automatic assembly of large workpieces and other occasions, but most of the installation space and mode have great limitation, and cannot be applied to multiple different thickness and large deviation plates in complex working conditions, and a large amount of welding slag, dust and the like are generated during welding processing.
[0008] 1.No thickness compensation function or small compensation range, low adaptability in complex working conditions;
[0009] 2.No dustproof effect, and the service life of air cylinder is shortened.
[0010] Therefore, an air cylinder with tolerance and positioning hook pin is needed, which can be equipped with a dustproof component, has good dustproof performance in complex working conditions and meets the service life of the product. INVENTION CONTENTS
[0011] The utility model aims at providing a kind of tolerance type hook pin clamping air cylinder with dustproof function, to solve the problem that prior art does not have dustproof performance in complex working conditions.
[0012] In order to realize the above-mentioned purpose, the specific technical scheme of the tolerance type hook pin clamping pneumatic cylinder with dustproof function is as follows:
[0013] The tolerance type hook pin clamping pneumatic cylinder with dustproof function comprises a cylinder composed of a rear cover, a shell and a supporting block, the left and right ends of the shell are connected with the rear cover and the supporting block respectively, an inner chamber is arranged in the middle of the rear cover, the shell and the supporting block, a piston rod is arranged in the inner chamber, the piston rod is connected with a hook through a connecting piece, the piston rod and the hook are both fixed on the two ends of the connecting piece through connecting shafts, a guide block is further fixed on the connecting shaft of the hook, the hook-shaped one end of the hook is arranged outside the cylinder from the inner chamber, a dustproof copper sleeve matched with the hook is arranged in the inner chamber of the shell near the supporting block, a sensing block is arranged on the piston rod near the connecting piece, and a piston is arranged on the end of the piston rod away from the guide block.
[0014] Further, the sensing block is arranged on the piston rod near the connecting piece.
[0015] Further, a groove guide rail is arranged in the guide block, a roller is arranged on the connecting shaft, and the roller moves along the groove guide rail.
[0016] Further, a cylinder barrel is further arranged at the connecting part of the shell and the rear cover, a chip removal groove for discharging dust on the upper part of the shell is formed in the cylinder barrel, and the dust on the upper part of the shell can be discharged through the chip removal groove.
[0017] Further, the dustproof copper sleeve is a round copper sleeve, and the round copper sleeve is matched with the inner chamber.
[0018] Further, a dustproof pin for dustproof limiting of the hook is further arranged at the opening of the inner chamber of the cylinder.
[0019] Further, a nut for limiting and adjusting is further arranged on the end of the piston rod away from the sensing block.
[0020] Further, the guide block comprises two types of models with tolerance ranges of 5mm and 7mm. The setting of multiple types of models meets the use requirements of multiple working conditions and different sites, and in complex working conditions, the guide block has good clamping performance and can meet the service life of products.
[0021] The tolerance type hook pin clamping pneumatic cylinder with dustproof function has the following advantages:
[0022] 1. Good dustproof effect, through the dustproof copper sleeve adhered to the inner wall of the internal chamber, always adhering to the shell rotation during the operation of the cylinder, effectively reducing the gap, realizing the dustproof function.
[0023] 2. Simple structure, through the movement structure along the groove of the guide block, the movement track of the hook can be completed.
[0024] 3. Compact structure, with a conventional tolerance range of 5mm and a customizable tolerance range of 7mm, suitable for working environments with large tolerance ranges. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 A whole clamping state cross-sectional view of the cylinder is provided for the utility model;
[0026] Figure 2 A whole loosening state cross-sectional view of the cylinder is provided for the utility model;
[0027] Figure 3 An enlarged view of A is provided for the utility model;
[0028] Figure 4 A top view of the piston rod and hook part with the piston is provided for the utility model.
[0029] In the figure: 1, piston rod; 2, nut; 3, piston; 4, connecting piece; 5, guide block; 6, dustproof copper sleeve; 7, rear cover; 8, cylinder barrel; 9, shell; 10, supporting block; 11, hook; 12, dustproof pin; 13, internal chamber; 14, connecting shaft; 15, groove guide rail; 16, sensing block. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.
[0031] Example one
[0032] Referring to Figures 1-3The utility model provides a kind of tolerance formula hook pin clamping pneumatic cylinder with dustproof function, for automobile welding assembly occasion, a kind of tolerance formula hook pin clamping pneumatic cylinder with dustproof function, including the pneumatic cylinder by rear cover 7, shell 9 and support block 10, the left and right ends of shell 9 are connected rear cover 7 and support block 10 respectively, rear cover 7, shell 9 and support block 10 are opened in the middle for internal chamber 13, the internal chamber 13 of rear cover 7 and shell 9 part is provided with piston rod 1 as power transmission component, piston rod 1 and hook 11 are all fixed in the two ends of connecting piece 4 by connecting shaft 14 respectively, guiding block 5 is further fixed on the connecting shaft 14 of hook 11, the hook-shaped one end of hook 11 is stretched out from internal chamber 13 outside the pneumatic cylinder, dustproof copper sleeve 6 that is combined with hook 11 is provided in the internal chamber 13 of the side of shell 9 close to support block 10, inductive block 16 is provided in the part close to connecting piece 4 in piston rod 1, and the end of piston rod 1 away from guiding block 5 is provided with piston 3.
[0033] The pneumatic cylinder is sequentially composed of rear cover 7, cylinder barrel 8, shell 9 and support block 10 from left to right, and the internal chamber 13 is formed in the pneumatic cylinder, which is penetrated from the right to the left on the side of the support block 10 to the rear cover 7; the piston rod 1 is arranged in the internal chamber 13 where the rear cover 7, the cylinder barrel 8 and the shell 9 are located, and the nut 2 for limiting adjustment is fixed at one end of the piston rod 1 on the rear cover 7, and the other end is fixed at the left end of the connecting piece 4; the inductive block 16 is sleeved on the piston rod 1 close to the connecting piece 4; the hook 11 is arranged in the internal chamber 13 of the shell 9 and the support block 10, wherein the hook-shaped one end is stretched out of the internal chamber 13, and the one end of the hook 11 in the internal chamber 13 of the shell 9 is fixed at the right end of the connecting piece 4; the connecting piece 4 is in the shape of an ellipse with two fixing grooves formed in the middle, and the piston rod 1 and the hook 11 are fixed by the connecting shaft 14 matched with the fixing grooves on the connecting piece 4; the guiding block 5 is in the shape of an ellipse and the width thereof is matched with the inner wall of the internal chamber 13, and the recessed guide rail 15 is formed in the middle, the roller is arranged on the fixed shaft of the hook 11, the hook 11 is arranged on the guiding block 5 by the roller, and moves along the recessed guide rail 15 by the connecting shaft 14 on the roller; the dustproof copper sleeve 6 is a round copper sleeve, which is sleeved on the hook 11 and matched with the inner wall of the internal chamber 13 in size; the dustproof pin 12 is a columnar with one side opening, which is arranged at the opening part of the internal chamber 13 of the support block 10, and the hook-shaped one end of the hook 11 is arranged in the dustproof pin 12 which is stretched out of the internal chamber 13 part.
[0034] As Figure 1As shown, this is the clamping state of the tolerance hook clamping cylinder with dustproof function of this application: the cylinder draws in air, the piston 3 is located at the end of the piston rod 1 away from the sensing block 16, forming a sealed space with the internal cavity 13 of the cylinder. At this time, a negative pressure is formed on the left inner wall of the cylinder, and the piston rod 1 moves under the pressure. Through the connector 4, the roller of the connecting shaft 14 moves along the track in the groove guide rail 15 of the guide block 5, and causes one end of the connecting shaft 14 of the hook 11 to rotate counterclockwise along the elliptical trajectory. Through the connector 4 and the connecting shaft 14 connected to the hook 11, the force is transmitted to make the hook 11 rotate to the clamping state. During the movement, the dustproof copper sleeve 6 is in contact with the inner wall of the internal cavity 13 and rotates to reduce the gap at this point, which can prevent dust from entering the internal cavity 13.
[0035] like Figure 2 As shown, the opening process of the dustproof tolerance hook clamping cylinder of this application is as follows: the cylinder is depressurized, the piston 3 is located at the end of the piston rod 1 away from the sensing block 16, forming a sealed space with the internal cavity 13 of the cylinder. When the cylinder is depressurized, the piston 3 loses the force provided by the cylinder when it is vented. Through the connector 4, the roller of the connecting shaft 14 is driven to retract along the groove in the guide block 5, and one end of the connecting shaft 14 of the hook 11 rotates clockwise along an elliptical trajectory. Through the connector 4 and the connecting shaft 14 connected to the hook 11, the force is transmitted to rotate the hook 11 to the open state, and the dustproof pin 12 limits the extension of the hook 11 and provides initial dust protection.
[0036] Preferably, since the hook 11 part in the cylinder moves along the groove guide rail 15 of the guide block 5, rather than the irregular movement of the traditional hook pin cylinder, the dustproof self-locking hook pin clamping cylinder can be customized with the guide block 5, which has a larger tolerance range and realizes a larger material thickness compensation function than the traditional cylinder.
[0037] Preferably, the cylinder of this utility model uses a conventional guide block 5, which has a conventional tolerance range of 5mm. By customizing the guide block 5, it can have a tolerance range of 7mm.
[0038] Preferably, the housing 9 has a chip removal groove, through which dust entering the upper part of the housing 9 can be discharged. During the opening or clamping of the cylinder, the dustproof copper sleeve 6 remains in contact with the housing 9, preventing welding slag, iron filings, and other debris from entering the cylinder, thus achieving the cylinder's dustproof function.
[0039] In summary, the dustproof tolerance-type hook-and-pin clamping cylinder of this utility model achieves its hook-and-pin function by having the piston assembly move up / down, the connecting piece 4 drives the roller to move up / down along the groove of the guide block 5, pushing the hook 11 to open / clamp, and the dustproof copper sleeve 6 engages with the hook 11 to rotate counterclockwise / clockwise within the housing 9. This effectively prevents dust from entering the cylinder during operation.
[0040] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A tolerance hook pin clamping cylinder with dustproof function, comprising a cylinder composed of a rear cover (7), a shell (9) and a supporting block (10), characterized in that, The left and right ends of the shell (9) are connected with the rear cover (7) and the supporting block (10) respectively, the rear cover (7), the shell (9) and the supporting block (10) are provided with an internal cavity (13) in the middle, the internal cavity (13) is provided with a piston rod (1), the piston rod (1) is connected with a hook (11) through a connecting piece (4), the piston rod (1) and the hook (11) are both fixed on the two ends of the connecting piece (4) through connecting shafts (14), the connecting shaft (14) of the hook (11) is further fixed with a guide block (5), the hook-shaped end of the hook (11) extends out of the cylinder from the internal cavity (13), the internal cavity (13) of the shell (9) near the supporting block (10) is provided with a dustproof copper sleeve (6) sleeved with the hook (11), the piston rod (1) is provided with a sensing block (16) near the connecting piece (4), and the end of the piston rod (1) away from the guide block (5) is provided with a piston (3).
2. The tolerance type hook pin clamping pneumatic cylinder with dustproof function according to claim 1, characterized in that, The piston rod (1) is provided with a sensing block (16) near the connecting piece (4).
3. The tolerance type hook pin clamping pneumatic cylinder with dustproof function according to claim 1, characterized in that, The guide block (5) is provided with a groove guide rail (15), and the connecting shaft (14) is provided with a roller which moves along the groove guide rail (15).
4. The tolerance type hook pin clamping pneumatic cylinder with dustproof function according to claim 1, characterized in that, The connecting part of the shell (9) and the rear cover (7) is further provided with a cylinder barrel (8), and the cylinder barrel (8) is provided with a chip removal groove for discharging dust on the upper part of the shell (9).
5. The dustproof tolerance hook pin clamping cylinder according to claim 1, characterized in that, The dustproof copper sleeve (6) is a round copper sleeve which is attached to the internal cavity (13).
6. The dustproof tolerance hook pin clamping cylinder according to claim 1, characterized in that, The opening of the internal cavity (13) of the cylinder is further provided with a dustproof pin (12) for dustproof and limiting of the hook (11).
7. The dustproof tolerance hook pin clamping cylinder according to claim 1, characterized in that, The end of the piston rod (1) away from the sensing block (16) is further provided with a nut (2) for limiting and adjusting.
8. The dustproof tolerance hook pin clamping cylinder according to claim 1, characterized in that, The guide block (5) includes two tolerance range models of 5mm and 7mm.