Round bar grabbing mechanism

Abstract

The invention provides a round bar grabbing mechanism, and belongs to the technical field of machinery. The problem that the position of an existing grabbing mechanism is inconvenient to adjust is solved. The round bar grabbing mechanism comprises a fixing plate and a vertical beam arranged on the front side of the fixing plate, a driving piece used for driving the vertical beam to ascend and descend is installed on the fixing plate, a pneumatic finger is vertically arranged below the vertical beam, and the pneumatic finger comprises a cylinder body and two fingers which are arranged in parallel front and back. An upper plate body and a lower plate body are horizontally arranged between the vertical beam and the cylinder body in sequence from top to bottom; the middle of the top wall of the cylinder body is hinged to the lower plate body through a horizontally-arranged shaft body, and the axis of the shaft body extends front and back. The upper side of the upper plate body is fixedly connected with a vertical beam, the lower side of the upper plate body is connected with the lower plate body in a front-back sliding mode, and the lower plate body is provided with an unlocking structure capable of locking the lower plate body at the sliding position. According to the round bar grabbing mechanism, the position is convenient to adjust.

Description

Technical Field

[0001] This invention belongs to the field of mechanical technology and relates to a gripping mechanism, particularly a gripping mechanism for round bars. Background Technology

[0002] Existing bar gripping mechanisms, such as the bar gripping and conveying device disclosed in the Chinese Patent Database (application number: 201610788573.4), include a gripping mechanism, a telescopic mechanism, and a rotating mechanism connected in sequence. The gripping mechanism is used to grip the bar, and the rotating mechanism allows the bar gripping and conveying device to rotate as a whole in a vertical plane. A lateral movement mechanism is provided, and the bar gripping and conveying device moves horizontally through the lateral movement mechanism. The gripping mechanism includes a parallel pneumatic gripper and an extended gripper. One end of the parallel pneumatic gripper is connected to the extended gripper, and the other end is connected to the telescopic mechanism. The telescopic mechanism includes a telescopic arm and an extension arm. The telescopic arm has one end fitted inside the telescopic cylinder and the other end connected to the gripping mechanism. The telescopic mechanism also has at least one guide post, one end of which is connected to the telescopic cylinder and the other end of which is connected to the gripping mechanism. The guide post is parallel to the telescopic arm. The rotating mechanism includes a connecting seat fixed to the transverse mechanism, a first rotating cylinder, and a connecting component. The first rotating cylinder is fixed to the connecting seat. The first rotating shaft fitted to the first rotating cylinder is arranged horizontally and perpendicular to the bar gripping device. The connecting component is fixed to the first rotating shaft and connected to the telescopic mechanism.

[0003] In the aforementioned conveying device, the installation of the parallel gripper mainly relies on multiple bolts, which means that adjusting its position in different directions requires operating multiple bolts, making the operation cumbersome and inconvenient. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing an easily adjustable round bar gripping mechanism.

[0005] The objective of this invention can be achieved through the following technical solution: A round bar gripping mechanism, comprising a fixed plate and a vertical beam disposed on the front side of the fixed plate, a driving component for driving the vertical beam to rise and fall is mounted on the fixed plate, and a pneumatic finger is vertically disposed below the vertical beam, the pneumatic finger comprising a cylinder and two fingers arranged side by side, characterized in that an upper plate and a lower plate are arranged horizontally from top to bottom between the vertical beam and the cylinder; the top wall of the cylinder is hinged to the lower plate through a horizontally disposed shaft, and the shaft axis extends front and back; the upper side of the upper plate is fixedly connected to the vertical beam, the lower side of the upper plate and the lower plate are slidably connected front and back, and the lower plate is provided with a lockable structure that can lock the lower plate in the sliding position.

[0006] This gripping mechanism is used to grip small-sized round bars.

[0007] The cylinder of the pneumatic finger is hinged to the upper plate via a horizontal shaft, allowing the pneumatic finger to automatically align itself using its own weight and maintain a vertical position. Simultaneously, the upper and lower plates are slidably connected, enabling fine-tuning of the pneumatic finger in the forward and backward directions. The movement of the pneumatic finger is controlled by locking or unlocking a locking structure. This effectively reduces the number of steps required to adjust the pneumatic finger position, offering advantages such as convenient and easy adjustment.

[0008] In the aforementioned round bar gripping mechanism, the upper plate is attached to the lower plate. A sliding groove runs through the upper side of the lower plate from front to back. A slider, whose shape and size match the sliding groove, is formed at the bottom of the lower plate. The slider is slidably positioned within the sliding groove, and a limiting structure is provided between the slider and the sliding groove to restrict the downward movement of the lower plate. The slider and the sliding groove are formed at the bottom and top of the upper plate, respectively, effectively shortening the height after their connection and reducing the space occupied by the gripping mechanism.

[0009] In the above-mentioned round bar gripping mechanism, the left and right sides of the slider are two symmetrically arranged inclined surfaces, and the distance between the two inclined surfaces gradually increases from top to bottom; the two side walls of the slide groove are inclined surfaces that match the inclined surfaces, and the two inclined surfaces are respectively attached to the two inclined surfaces. The above-mentioned limiting structure consists of inclined surfaces and inclined surfaces. The above design has the advantages of simple structure and convenient processing.

[0010] In the above-mentioned round bar gripping mechanism, the bottom of the slider extends downward to form a long strip-shaped locking block, and the length of the locking block extends front and back; there are two locking blocks arranged side by side; two shaped grooves matching the locking blocks are opened on the bottom wall of the slide groove, the strip grooves are arranged to run through the front and back, and the two locking blocks are respectively inserted into the two shaped grooves to realize two sliding guides, improve the sliding stability and accuracy of the pneumatic finger, and further facilitate adjustment.

[0011] In the above-mentioned round bar gripping mechanism, the strip groove includes two side walls arranged side by side. The above-mentioned unlockable structure makes the two locking blocks tend to move towards each other and press against the corresponding side walls of the strip groove.

[0012] In the aforementioned round bar gripping mechanism, the unlocking structure includes threaded holes horizontally formed on the left and right side walls of the lower plate, with each threaded hole connected to a corresponding slot. A rod-shaped limiting member is threaded into each threaded hole, with one end of the limiting member pressing against a corresponding locking block. Rotating the limiting member controls the locking or unlocking of the lower plate, further facilitating the adjustment of the pneumatic finger position.

[0013] In the above-mentioned round bar gripping mechanism, the limiting component is a bolt, and the bolt head is outside the threaded hole.

[0014] In the above-mentioned round bar gripping mechanism, the sides of the two locking blocks that are far apart are both vertical planes, which are used to increase the contact area between the limiting component and the locking block, thereby locking the lower plate more stably.

[0015] In the above-mentioned round bar gripping mechanism, the distance between the two vertical planes is greater than the distance between the two inclined planes, and the vertical planes and the corresponding inclined planes are connected by a horizontal plane to provide more vertical support to the lower plate and improve the working and structural stability of the gripping mechanism.

[0016] Compared with existing technologies, this round bar gripping mechanism has the following advantages: 1. The cylinder of the pneumatic finger is hinged to the upper plate using a horizontal shaft, so that the pneumatic finger can automatically adjust itself using its own weight and keep itself in a vertical position. At the same time, the upper plate and the lower plate are slidably connected to each other, so that the pneumatic finger can be finely adjusted in the front and back directions. The movement of the pneumatic finger is controlled by locking or unlocking the locking structure. This effectively reduces the number of steps for adjusting the position of the pneumatic finger and has the advantages of convenient and easy adjustment.

[0017] 2. With the cooperation of inclined plane one and inclined plane two, as well as the cooperation of the horizontal plane and the top wall of the strip groove, the lower plate body obtains multiple vertical supports, improving the working and structural stability of the gripping mechanism. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the bar gripping mechanism in Embodiment 1.

[0019] Figure 2 This is a cross-sectional schematic diagram of the round bar gripping mechanism in Embodiment 1.

[0020] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0021] Figure 4 This is a schematic diagram of the structure of Embodiment 2.

[0022] In the diagram, 1. Fixed plate; 2. Driving component; 3. Vertical beam; 4. Pneumatic finger; 4a. Cylinder; 4b. Finger; 4c. Finger tip; 4d. Connecting block; 5. Upper plate; 5a. Slider; 5a1. Inclined surface one; 5b. Locking block; 6. Lower plate; 6a. Positioning block; 6b. Slide groove; 6c. Strip groove; 6d. Threaded hole; 7. Shaft; 8. Limiting component. Detailed Implementation

[0023] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0024] Example 1: As Figure 1As shown, this round bar gripping mechanism includes a fixed plate 1, a driving component 2, and a vertical beam 3 vertically arranged on the front side of the fixed plate 1.

[0025] in, The drive component 2 is installed on the front side of the fixed plate 1 and is located on the left or right side of the vertical beam 3. The drive component 2 is used to drive the vertical beam 3 to rise and fall. Specifically, the drive component 2 is a cylinder, which is vertically arranged and fixed to the fixed plate 1 by a support. The lower end of the piston rod of the cylinder is connected to the vertical beam 3 through a fisheye joint.

[0026] A pneumatic finger 4 is vertically mounted below the vertical beam 3. The pneumatic finger 4 is an existing product and includes a cylinder 4a and two fingers 4b arranged side-by-side. Each finger 4b has two fingertips 4c arranged side-by-side with a left-right gap, and the two fingertips 4c arranged side-by-side form a clamping opening for horizontally gripping the round bar. Preferably, the adjacent sides of the two fingertips 4c arranged side-by-side form a V-shape for more stable gripping of the round bar.

[0027] like Figures 1 to 3 As shown, an upper plate 5 and a lower plate 6 are horizontally arranged sequentially from top to bottom between the vertical beam 3 and the cylinder body 4a. The top wall of the cylinder body 4a is hinged to the lower plate 6 via a horizontally arranged shaft 7, and the axis of the shaft 7 extends back and forth. The upper side of the upper plate 5 is fixedly connected to the vertical beam 3, and the lower side of the upper plate 5 and the lower plate 6 are slidably connected back and forth. The lower plate 6 is provided with a lockable structure that can lock the lower plate 6 in the sliding position.

[0028] This gripping mechanism is used to grip small-sized round bars.

[0029] The cylinder 4a of the pneumatic finger 4 is hinged to the upper plate 5 via the horizontal shaft 7, so that the pneumatic finger 4 can automatically adjust itself by its own weight and keep itself in a vertical position. At the same time, the upper plate 5 and the lower plate 6 are slidably connected to each other, so that the pneumatic finger 4 can be finely adjusted in the front and back directions. The movement of the pneumatic finger 4 can be controlled by locking or unlocking the locking structure. This can effectively reduce the number of steps for adjusting the position of the pneumatic finger 4 and has the advantages of convenient and easy adjustment.

[0030] Specifically, in this embodiment... The shaft 7 is installed as follows: A connecting block 4d is vertically formed in the middle of the top wall of the cylinder 4a. Positioning blocks 6a are vertically formed on both the front and rear sides of the connecting block 4d at the bottom of the lower plate 6, and the two positioning blocks 6a are respectively attached to both sides of the connecting block 4d. A connecting hole is formed on the connecting block 4d, extending through the shaft. The shape and size of the shaft 7 match the connecting hole. The shaft 7 is inserted into the connecting hole, and the two are engaged through circumferential contact. Two positioning blocks 6a are fixedly connected to both ends of the shaft 7.

[0031] like Figure 2and Figure 3 As shown, the sliding connection between the upper plate 5 and the lower plate 6 is as follows: the upper plate 5 is attached to the lower plate 6, and a sliding groove 6b runs through the upper side of the lower plate 6. A slider 5a, whose shape and size match the sliding groove 6b, is formed at the bottom of the lower plate 6. The slider 5a is slidably disposed within the sliding groove 6b, and a limiting structure is provided between the slider 5a and the sliding groove 6b to restrict the downward movement of the lower plate 6. The slider 5a and the sliding groove 6b are formed at the bottom and top of the upper plate 5, respectively, which effectively shortens the height after the connection and reduces the space occupied by the gripping mechanism.

[0032] In this design, the left and right sides of the slider 5a are symmetrically arranged with two inclined surfaces 5a1, and the distance between the two inclined surfaces 5a1 gradually increases from top to bottom; the two side walls of the groove 6b are inclined surfaces 2 that match the inclined surfaces 5a1, and the two inclined surfaces 5a1 are respectively attached to the two inclined surfaces 2. The aforementioned limiting structure consists of inclined surfaces 5a1 and inclined surfaces 2. This design has the advantages of simple structure and convenient processing.

[0033] To further explain, the bottom of the slider 5a extends downward to form a long, narrow locking block 5b, and the length of the locking block 5b extends front to back. There are two locking blocks 5b arranged side by side. The bottom wall of the slide groove 6b has two shaped grooves 6c that match the locking blocks 5b. The shaped grooves 6c are arranged to run through the entire slide, and the two locking blocks 5b are respectively inserted into the two shaped grooves 6c to achieve two sliding guides, improve the sliding stability and accuracy of the pneumatic finger 4, and further facilitate adjustment. Preferably, the cross-section of the locking block 5b is rectangular or square, and in this case, the cross-section of the shaped groove 6c is a corresponding rectangle or square.

[0034] like Figure 2 and Figure 3 As shown, the strip groove 6c includes two side walls arranged side by side. The unlockable structure allows the two locking blocks 5b to move towards each other and press against the corresponding side walls of the strip groove 6c. Specifically, the unlockable structure includes threaded holes 6d horizontally opened on the left and right side walls of the lower plate 6, and the threaded holes 6d are connected to the corresponding strip groove 6c. Each threaded hole 6d is threaded with a rod-shaped limiting member 8, and one end of the limiting member 8 is pressed against the corresponding locking block 5b. By rotating the limiting member 8, the lower plate 6 can be locked or unlocked, further facilitating the adjustment of the position of the pneumatic finger 4. Preferably, the limiting member 8 is a bolt, and the bolt head is outside the threaded hole 6d. Of course, the solution of "the limiting member 8 is a threaded pin, and the end of the threaded pin away from the strip groove 6c extends out of the corresponding threaded hole 6d" is also acceptable.

[0035] In the actual product, the sides of the two locking blocks 5b that are far apart are both vertical planes, which are used to increase the contact area between the limiting member 8 and the locking block 5b, thereby locking the lower plate 6 more stably. The distance between the two vertical planes is greater than the distance between the two inclined planes 5a1, and the vertical planes and the corresponding inclined planes 5a1 are connected by a horizontal plane, so that the lower plate 6 can obtain more vertical support and improve the working and structural stability of the gripping mechanism.

[0036] Example 2: The structure and principle of Example 2 are basically the same as those of Example 1. The difference is that the limiting structure includes blocks formed on the left and right side walls of the slide groove 6b, and both blocks press against the upper end of the slider 5a to limit the upward movement of the slider 5a.

[0037] Example 3: The structure and principle of Example 3 are basically the same as those of Example 1, except that: Figure 4 As shown, there are two sets of round bar gripping mechanisms arranged side by side. The two round bar gripping mechanisms share a fixed plate 1 to form a dual-station structure, which can achieve alternating lifting and lowering for fast and automatic loading and unloading.

[0038] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A round bar grabbing mechanism, comprising a fixed plate (1) and a vertical beam (3) arranged on the front side of the fixed plate (1), a driving member (2) is installed on the fixed plate (1) for driving the vertical beam (3) to lift, a pneumatic finger (4) is vertically arranged below the vertical beam (3), the pneumatic finger (4) comprises a cylinder body (4a) and two fingers (4b) arranged side by side in front and back, characterized in that, The upper plate body (5) is attached to the lower plate body (6), the upper side of the lower plate body (6) is provided with a sliding groove (6b) extending front to back, and the bottom of the lower plate body (6) is formed with a sliding block (5a) matching the sliding groove (6b) in shape and size, which is slidingly arranged in the sliding groove (6b), and a limiting structure for limiting the downward movement of the lower plate body (6) is arranged between the sliding block (5a) and the sliding groove (6b).

2. The round bar grab mechanism of claim 1, wherein, The left and right sides of the sliding block (5a) are two symmetrical inclined surfaces (5a1), and the distance between the two inclined surfaces (5a1) gradually increases from top to bottom; the two side walls of the sliding groove (6b) are both inclined surfaces (5a1) matching the inclined surfaces (5a1), and the two inclined surfaces (5a1) are attached to the two inclined surfaces (5a1), respectively. The above-mentioned limiting structure is the inclined surface (5a1) and the inclined surface.

3. The round bar grab mechanism of claim 2, wherein, The bottom of the sliding block (5a) extends downward to form a long strip-shaped locking block (5b), and the locking block (5b) extends front to back in length; the locking block (5b) has two blocks and is arranged side by side; the bottom wall of the sliding groove (6b) is provided with two strip-shaped grooves (6c) matching the locking block (5b), the strip-shaped grooves (6c) are arranged front to back, and the two locking blocks (5b) are respectively inserted into the two strip-shaped grooves (6c).

4. A round bar gripping mechanism according to claim 2 or 3, wherein The strip-shaped groove (6c) includes two side walls arranged side by side, and the above-mentioned releasable locking structure makes the two locking blocks (5b) have the tendency to move towards each other and be pressed against the side walls of the corresponding strip-shaped groove (6c).

5. The round bar gripping mechanism of claim 4, wherein, The releasable locking structure includes screw holes (6d) horizontally arranged on the left and right side walls of the lower plate body (6), and the screw holes (6d) communicate with the corresponding strip-shaped grooves (6c). Each screw hole (6d) is threadedly connected with a rod-shaped limiting member (8), and one end of the limiting member (8) is pressed against the corresponding locking block (5b).

6. The round bar gripping mechanism of claim 5, wherein, The type of the limiting member (8) is a bolt, and the head of the bolt is outside the screw hole (6d).

7. The round bar gripping mechanism of claim 6, wherein, The sides of the two locking blocks (5b) away from each other are both vertical planes.

8. The round bar gripping mechanism of claim 6, wherein, The distance between the two vertical planes is greater than the distance between the two inclined surfaces (5a1), and the vertical plane and the corresponding inclined surface (5a1) are transitioned by a horizontal plane.

9. The round bar gripping mechanism of claim 8, wherein, ​

Images