Air cylinder pressing arm opening angle limiting structure

Abstract

The utility model relates to the technical field of automobile clamp device structures, in particular to an air cylinder pressing arm opening angle limiting structure. Comprising a clamping air cylinder, a pressing arm installed at the telescopic end of the clamping air cylinder and driven by the clamping air cylinder to rotate around a rotating shaft of the clamping air cylinder, a connecting block fixedly connected with the pressing arm, an adjusting structure and a stopping structure, the adjusting structure comprises an extending part with an adjustable angle position; the stop structure is fixed to a shell of the clamping air cylinder and used for limiting further rotation of the extending part and the adjusting structure when the extending part rotates around the rotating shaft along with the adjusting structure to make contact with the stop structure. The air cylinder pressing arm opening angle limiting structure is simple in structure and convenient to operate and use, the rotation angle of the pressing arm can be adjusted, switching of different opening angles of the air cylinder pressing arm is very convenient, original equipment is slightly changed, and cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile clamp device structures, in particular to an opening angle limiting structure of a cylinder pressure arm. Background Art

[0002] The opening angle range of the existing integrated clamping cylinder pressure arm is generally 0° to 135°. To achieve the limit position within this angle range, there are currently two ways: the first is to change the sensor position, loosen the sensor on the cylinder, move the sensor up and down to the appropriate position and then tighten it. The second is to change the stroke of the cylinder, loosen the original adjustment screw at the end of the cylinder and replace it with an adjustment screw of the appropriate angle.

[0003] Both of these adjustment methods have certain defects. In the first adjustment method, you must pay close attention to the gap between the sensor and the cylinder joint. Generally, this gap should be controlled within 1.5mm, otherwise poor sensing may occur, leading to cylinder failure. The second adjustment method requires the replacement of additional adjustment screws. Different adjustment screws need to be replaced for different angles, and during the replacement process, the adjustment screws are prone to poor sealing, leading to cylinder leakage.

[0004] Some people have also proposed that the angle can be adjusted through the design of mechanical structure, such as the Chinese patent with patent number "CN106736173B" and titled "A tool clamping device and method". This patent introduces a tool clamping device, which includes a cylinder, a cylinder joint, a mounting seat, a shell, a connecting rod, and a pressure arm. The cylinder is connected to the bottom of the mounting seat, and the shell is connected to the top of the mounting seat. The mounting seat is provided with a cylinder hole. The bottom of the cylinder joint passes through the cylinder hole and is connected to the cylinder. Its top is hinged to the shell and the pressure arm respectively through a connecting rod. The shell is provided with a first limit block near the pressure arm, and the first limit block limits the maximum opening angle of the pressure arm. The device is provided with a first limit block near the pressure arm of the shell. The first limit block is set to a variety of limit angles and limit heights. The first limit block is realized by different profiles, that is, limit blocks with different angles and heights. The angled profile of the limit block and the connecting rod act to achieve the limit function. The limit block can be replaced at any time according to the requirements of the limit angle. Although this structure can achieve the effect of angle adjustment, this method has many limitations and needs to be configured with a special limit structure for use. The structure of the first limit block has many limitations and only has a fixed angle adjustment value. In order to achieve adjustment of other angles, the entire structure needs to be modified. The operation is extremely complicated and is not suitable for promotion and use. Utility Model Content

[0005] The purpose of the utility model is to solve the deficiencies of the above-mentioned background technology and provide a cylinder pressure arm opening angle limiting structure.

[0006] The technical solution of the utility model is: a cylinder pressure arm opening angle limiting structure, including a clamping cylinder, a pressure arm installed at the telescopic end of the clamping cylinder and driven by the clamping cylinder to rotate around the rotating axis of the clamping cylinder, and a connecting block fixedly connected to the pressure arm.

[0007] Also includes,

[0008] An adjustment structure, wherein the adjustment structure is fixed to the connection block and rotates along with the connection block around the rotation axis, and the adjustment structure comprises an extension portion with an adjustable angle position;

[0009] The stop structure is fixed on the housing of the clamping cylinder and is used to limit the further rotation of the extending part and the adjusting structure when the extending part follows the adjusting structure to rotate around the rotation axis until it contacts the stop structure.

[0010] According to a cylinder pressure arm opening angle limiting structure provided in the present application, the stop structure includes:

[0011] A fixing block, which is an L-shaped structure installed on the side of the clamping cylinder and includes a horizontal part and a vertical part;

[0012] The cushion block is a flexible structure fixed to the upper end of the vertical part of the fixed block.

[0013] According to a cylinder pressure arm opening angle limiting structure provided in the present application, a U-shaped protective groove with an upper end opening for accommodating the extension portion is installed on the cushion block.

[0014] According to a cylinder pressure arm opening angle limiting structure provided in the present application, the adjustment structure includes:

[0015] The adjusting block is fixed on the connecting block and is provided with a plurality of adjusting holes which are arranged at intervals along the circumference of the rotating shaft and are used for installing the extension part.

[0016] According to a cylinder pressure arm opening angle limiting structure provided in the present application, the adjustment block is an arc-shaped component installed on the connecting block, the center of the adjustment block coincides with the axis of the rotating shaft, and a plurality of adjustment holes extending radially are provided on the circumferential outer surface of the adjustment block.

[0017] According to a cylinder pressure arm opening angle limiting structure provided in the present application, the multiple adjustment holes are arranged at equal intervals along the circumference of the adjustment block.

[0018] According to a cylinder pressure arm opening angle limiting structure provided in the present application, a scale for marking the angle of the adjustment hole is provided on the axial end surface of the adjustment block away from the clamping cylinder.

[0019] According to a cylinder pressure arm opening angle limiting structure provided in the present application, the extension portion is a columnar rod-shaped structure with one end capable of being inserted into an adjustment hole.

[0020] The advantages of the present application are as follows: 1. The present application improves the integrated clamping cylinder by installing an adjustment structure on the pressure arm and the connecting block of the movable part and installing a stop structure on the housing of the clamping cylinder of the fixed part. When the adjustment structure and the extension part rotate to the stop structure, they will be blocked by the stop structure to prevent them from further moving, thereby achieving the purpose of limiting the opening angle of the pressure arm. At the same time, the extension part can adjust the angle position on the adjustment structure to adapt to the rotation stop at different angles, thereby achieving the required opening requirement. The overall structure is simple and easy to operate. There are few structures involved in modification, which will not cause a significant increase in cost. In addition, the adjustment method of the extension part on the adjustment structure is simple and the adjustment range is wide, which is suitable for promotion and application.

[0021] 2. The stopper structure of the present application is very simple. A fixing block is installed on the side of the clamping cylinder, and a cushion block is installed on the top of the fixing block. The cushion block is a flexible structure, which is convenient for stopping the protruding part. The overall structure is very simple and is installed on the outside of the clamping cylinder. It is very convenient to install and disassemble, and there is no need to make too much adjustment to the original device.

[0022] 3. The cushion block of the present application is provided with a protection groove structure, which is convenient for limiting the further rotation of the extension part when the extension part rotates to the stop structure, so as to prevent the extension part from slipping out when rotating to the cushion block, and the stability of the limit is guaranteed;

[0023] 4. The adjustment structure of the present application includes an adjustment block, which is installed on the connecting block. The overall structure is simple. The installation and adjustment of the extension part are facilitated by setting the adjustment hole. It is very convenient to use, easy to disassemble and install, and the modification of the original equipment is minimal.

[0024] 5. The adjustment block of the present application is an arc-shaped member, and the center of the arc-shaped member coincides with the axis of the rotating shaft, so that the rotation of the adjustment block can always be regular and consistent with the rotation of the pressure arm and the connecting block. It is more convenient to set the adjustment hole on the arc-shaped adjustment block, which is more regular to use and has higher adjustment accuracy;

[0025] 6. The adjustment holes of the present application are equidistantly distributed. Such an arrangement makes it more convenient to adjust the extension part and the angle adjustment easier;

[0026] 7. The present application provides a scale on the adjustment block, which marks the angular position of the adjustment hole, so that the angle corresponding to the adjustment hole into which the extension is inserted can be easily obtained, which facilitates the adjustment control of the extension;

[0027] 8. The extension part of the present application has a simple structure and is extremely convenient to install and use. It can be conveniently installed by simply inserting it into the corresponding adjustment hole.

[0028] The cylinder pressure arm opening angle limiting structure of the present application has a simple structure and is easy to operate and use. It can adjust the angle of rotation of the pressure arm. The switching of different opening angles of the cylinder pressure arm is very convenient. The change to the original equipment is minimal, the cost is low, and it has great promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 : Axial view of the cylinder pressure arm opening angle limiting structure of the present application;

[0030] Figure 2 : The front view of the cylinder pressure arm opening angle limiting structure of the present application;

[0031] Figure 3 : A side view of the cylinder pressure arm opening angle limiting structure of the present application;

[0032] Figure 4 : Schematic diagram of the cylinder pressure arm opening angle limiting structure of the present application when the pressure arm is opened to the designed angle;

[0033] Among them: 1-clamping cylinder; 2-pressure arm; 3-connecting block; 4-extending part; 5-fixing block; 6-pad; 7-adjusting block; 8-adjusting hole; 9-scale. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0035] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] The present application relates to a cylinder pressure arm opening angle limiting structure. The present application is an improvement on the existing integrated clamping cylinder. By improving the existing integrated clamping cylinder, the pressure arm of the integrated clamping cylinder can be switched according to the set angle position, so as to meet different opening angle adjustment requirements.

[0039] The clamping cylinder structure of the present application is as follows Figures 1 to 4 As shown, it includes a clamping cylinder 1, a pressing arm 2 installed at the telescopic end of the clamping cylinder 1 and driven by the clamping cylinder 1 to rotate around the rotating axis of the clamping cylinder 1, and a connecting block 3 fixedly connected to the pressing arm 2. The clamping cylinder 1 includes a shell part and a telescopic end part. The shell part is a fixed part, and the telescopic end part can telescopically move vertically. The telescopic end part is connected to the pressing arm 2, and the pressing arm 2 is fixedly connected to the connecting block 3. When the telescopic end of the clamping cylinder 1 is driven vertically, a force can be applied to the pressing arm 2. The pressing arm 2 itself is installed on the clamping cylinder 1 through a rotating shaft. When one end of the pressing arm 2 is acted upon by the clamping cylinder 1, it can rotate around the axial direction of the rotating shaft. The other end of the pressing arm 2 cooperates with other pressing arm structures to clamp and fix the workpiece. When the reverse operation is performed, the pressing arm 2 can be opened to facilitate the picking and placing of the workpiece.

[0040] In order to facilitate the adjustment of the opening angle of the pressure arm 2, the cylinder pressure arm opening angle limiting structure of the present application also includes an adjustment structure and a stop structure. The adjustment structure is fixed to the connecting block 3 and rotates around the rotation axis with the connecting block 3. The adjustment structure includes an extension part 4 with adjustable angle position; the stop structure is fixed on the housing of the clamping cylinder 1, and is used to limit the further rotation of the extension part 4 and the adjustment structure when the extension part 4 rotates around the rotation axis with the adjustment structure until it contacts the stop structure.

[0041] During use, when the clamping cylinder 1 drives the pressing arm 2 and the connecting block 3 to rotate around the rotation axis, the adjusting structure installed on the connecting block 3 rotates around the rotation axis together with the connecting block 3, and at the same time, the extension 4 on the adjusting structure also rotates together with the adjusting structure, while the stop structure fixed on the housing of the clamping cylinder 1 is stationary; when the extension 4 rotates to the stop structure, it contacts the stop structure, and the stop structure limits the further rotation of the extension 4, and the extension 4 transmits this limiting effect to the adjusting structure, the connecting block 3 and the pressing arm 2, so that the pressing arm 2, the connecting block 3 and the adjusting structure are limited to the current angle, so as to achieve the purpose of adjusting the opening angle of the pressing arm 2; when it is necessary to adjust the opening angle of the pressing arm 2 accordingly, the angular position of the extension 4 on the adjusting structure can be adjusted accordingly, and each angular position of the extension 4 on the adjusting structure corresponds to an opening angle of the pressing arm 2. If the pressing arm 2 needs to be at the required opening angle, the corresponding angular position of the extension 4 on the adjusting structure can be adjusted accordingly, and the overall adjustment is very convenient.

[0042] Since the adjustment structure and stop structure of the present application are installed on the connecting block 3 and the clamping cylinder 1, there is no need to make substantial improvements to the existing equipment. Only fixed points need to be set on the original equipment. The overall modification cost is extremely low and the use is extremely convenient.

[0043] In some embodiments of the present application, the present embodiment further optimizes the above-mentioned stop structure. Specifically, Figures 1 to 4 As shown, the stop structure of this embodiment includes a fixed block 5 and a cushion block 6. The fixed block 5 is an L-shaped structure installed on the side of the clamping cylinder 1 and includes a horizontal part and a vertical part. The cushion block 6 is a flexible structure fixed to the upper end of the vertical part of the fixed block 5.

[0044] In this embodiment, the fixing block 5 is designed as an L-shaped structure, the purpose of which is to facilitate the fixing of the cushion block 6. A protrusion structure is provided on the fixing block 5, which corresponds to the groove structure on the clamping cylinder 1. During installation, it is only necessary to insert the protrusion structure on the fixing block 5 into the corresponding groove structure to complete the positioning of the two, and then tighten the horizontal part of the fixing block 5 to the side of the clamping cylinder 1 through a bolt structure, and tighten the vertical part of the fixing block 5 to the side of the clamping cylinder 1 near the connecting block 3 through a bolt structure. In actual application, other forms of fixing block structures can be used as long as they can meet the needs.

[0045] The cushion block 6 is designed to be a flexible structure to avoid rigid collision when the extension 4 contacts the cushion block 6 during rotation. The contact between the extension 4 and the cushion block 6 is softer, avoiding damage caused by collision and improving safety in use.

[0046] In addition, in order to prevent the extension part 4 from slipping off the cushion block 6 when it contacts the cushion block 6, a protective groove is provided at the upper end of the cushion block 6 in this embodiment. The protective groove is a U-shaped groove structure with an open upper end, which is used to accommodate the extension part 4 when the extension part 4 rotates to the position of the cushion block 6, thereby limiting the extension part 3 from falling off the cushion block 6.

[0047] During use, when the clamping cylinder 1 drives the pressing arm 2 and the connecting block 3 to rotate around the rotation axis, the adjusting structure installed on the connecting block 3 rotates around the rotation axis together with the connecting block 3, and at the same time, the extending part 4 on the adjusting structure also rotates together with the adjusting structure, while the stop structure fixed on the housing of the clamping cylinder 1 is stationary, that is, the fixed block 5 and the cushion block 6 are stationary; when the extending part 4 rotates to the cushion block 6, it contacts the cushion block 6, and the extending part 4 rotates into the protective groove of the cushion block 6, and the cushion block 6 limits the further rotation of the extending part 4, and the extending part 4 transmits this limiting effect to the adjusting structure, the connecting block 3 and the pressing arm 2, so that the pressing arm 2, the connecting block 3 and the adjusting structure are limited to the current angle, thereby achieving the purpose of adjusting the opening angle of the pressing arm 2.

[0048] In other embodiments of the present application, the present embodiment optimizes the above-mentioned adjustment structure. Specifically, Figures 1 to 4 As shown, the adjustment structure of this embodiment includes an adjustment block 7, which is fixed on the connecting block 3. The adjustment block 7 is provided with a plurality of adjustment holes 8 for mounting the extension part 4 and arranged at intervals along the circumference of the rotating shaft.

[0049] Furthermore, the adjustment block 7 of the present embodiment is an arc-shaped component installed on the connecting block 3, the center of the adjustment block 7 coincides with the axis of the rotating shaft, a plurality of adjustment holes 8 extending radially are provided on the circumferential outer surface of the adjustment block 7, and the extension portion 4 is a cylindrical rod-shaped structure with one end of which can be inserted into the adjustment hole 8.

[0050] Furthermore, the plurality of adjustment holes 8 of the present embodiment are arranged at equal intervals along the circumference of the adjustment block 7 .

[0051] In addition, a scale 9 for marking the angle of the adjustment hole 8 is provided on the axial end surface of the adjustment block 7 away from the clamping cylinder 1 .

[0052] When in use, when the clamping cylinder 1 drives the pressure arm 2 and the connecting block 3 to rotate around the rotation axis, the adjusting block 7 installed on the connecting block 3 rotates around the rotation axis along with the connecting block 3. At this time, a protruding portion 4 is inserted into a certain adjusting hole 8 of the adjusting block 7, and the protruding portion 4 also rotates along with the adjusting block 7, while the stopper structure fixed on the housing of the clamping cylinder 1 is stationary, that is, the fixed block 5 and the cushion block 6 are stationary; when the protruding portion 4 rotates to the cushion block 6, it contacts the cushion block 6, and the protruding portion 4 rotates into the protective groove of the cushion block 6, and the cushion block 6 limits the further rotation of the protruding portion 4, and the protruding portion 4 will This limiting effect is transmitted to the adjusting block 7, the connecting block 3 and the pressing arm 2, so that the pressing arm 2, the connecting block 3 and the adjusting block 7 are limited to the current angle, so as to achieve the purpose of adjusting the opening angle of the pressing arm 2; when the opening angle of the pressing arm 2 needs to be adjusted accordingly, the extension part 4 in the adjusting hole 8 is pulled out, and then the appropriate adjusting hole 8 is selected according to the scale 9 on the adjusting block 7, and the extension part 4 is inserted into the selected adjusting hole 8, and then the above steps are followed until the extension part 3 is rotated into the protective groove of the cushion block 6, at which time the opening angle of the pressing arm 2 reaches the required opening angle.

[0053] The axial direction of the present application refers to the axial direction of the rotating shaft of the pressing cylinder 1, such as Figure 2 In the direction perpendicular to the paper, the radial direction of the present application refers to the radial direction of the rotating axis of the pressing cylinder 1, such as Figure 2 The direction perpendicular to the paper plane is the radial direction of the axis, and the circumferential direction of the present application refers to the circumferential direction of the rotating axis of the pressing cylinder 1, such as Figure 2 The circumferential direction of the axis is the direction perpendicular to the paper plane.

[0054] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A cylinder pressure arm opening angle limiting structure, comprising a clamping cylinder (1), a pressure arm (2) installed at the telescopic end of the clamping cylinder (1) and driven by the clamping cylinder (1) to rotate around the rotating axis of the clamping cylinder (1), and a connecting block (3) fixedly connected to the pressure arm (2), Features: Also includes, An adjustment structure, the adjustment structure being fixed to the connection block (3) and rotating along with the connection block (3) around the rotation axis, the adjustment structure comprising a protruding portion (4) having an adjustable angular position; A stop structure is fixed on a housing of the clamping cylinder (1) and is used to limit further rotation of the extending portion (4) and the adjusting structure when the extending portion (4) follows the adjusting structure and rotates around the rotation axis until it contacts the stop structure.

2. A cylinder pressure arm opening angle limiting structure as claimed in claim 1, characterized in that: The stop structure comprises: A fixing block (5), the fixing block (5) being an L-shaped structure installed on the side of the clamping cylinder (1) and comprising a transverse portion and a vertical portion; The cushion block (6) is a flexible structure fixed to the upper end of the vertical part of the fixed block (5).

3. A cylinder pressure arm opening angle limiting structure as claimed in claim 2, characterized in that: The cushion block (6) is provided with a U-shaped protective groove with an open upper end for accommodating the extension portion (4).

4. The cylinder pressure arm opening angle limiting structure according to claim 1, characterized in that: The regulating structure comprises: The adjusting block (7) is fixed on the connecting block (3), and a plurality of adjusting holes (8) for mounting the extension part (4) are arranged at intervals along the circumference of the rotating shaft on the adjusting block (7).

5. A cylinder pressure arm opening angle limiting structure as claimed in claim 4, characterized in that: The adjusting block (7) is an arc-shaped component mounted on the connecting block (3); the center of the adjusting block (7) coincides with the axis of the rotating shaft; and a plurality of adjusting holes (8) extending in the radial direction are provided on the outer circumferential surface of the adjusting block (7).

6. A cylinder pressure arm opening angle limiting structure as claimed in claim 5, characterized in that: The plurality of adjustment holes (8) are arranged at equal intervals along the circumference of the adjustment block (7).

7. The cylinder pressure arm opening angle limiting structure according to claim 5, characterized in that: A scale (9) for marking the angle of the adjustment hole (8) is provided on the axial end surface of the adjustment block (7) away from the clamping cylinder (1).

8. A cylinder pressure arm opening angle limiting structure as claimed in any one of claims 4 to 7, characterized in that: The protruding portion (4) is a columnar rod-shaped structure, one end of which can be inserted into the adjustment hole (8).

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