Manipulator for grabbing bars

Abstract

The utility model relates to the technical field of mechanical manufacturing, and discloses a manipulator for grabbing bars, which comprises a cylindrical base and a pair of clamping arms, the clamping arms are hinged at the cylindrical bottom of the base, the clamping arms are respectively positioned on two sides of the base, a push rod is mounted in the base in a sliding manner, the push rod penetrates through the cylindrical bottom of the base, and the push rod is fixed on the base. Two fixed shafts are fixed to the end, penetrating through the cylinder bottom, of the push rod, long circular through holes are formed in the clamping arms, the fixed shafts slide along the corresponding long circular through holes, and the pair of clamping arms is opened or closed through sliding of the fixed shafts. The automatic bar taking and placing device has the advantages that the base is held by a hand, then the push rod is pushed and pulled, the clamping arms are opened and closed, bars are taken and placed, hand pressing accidents caused by the fact that the bars are taken and placed by hands are avoided, meanwhile, manufacturing cost is low, capital investment is small, and capital tension of small and micro enterprises is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical manufacturing, in particular to a manipulator for grabbing bar materials. Background Art

[0002] During the mechanical processing, for some short bar blanks, such as short bars with a length of less than 8 cm, it is often necessary to use a cold extruder or a punch press to process them into finished products of different structural shapes. However, in the traditional processing process, manual loading or unloading is usually used. Due to the small size of the short bar blanks, and the short bars often need to be in a vertical state and sent into the processing mold, safety accidents such as crushing hands are very likely to occur.

[0003] The Chinese utility model patent (authorization announcement number: CN204487547U name: a multi-arm manipulator) includes a base and a manipulator body arranged on the base, at least two manipulator arms at a certain angle to each other are arranged on the manipulator body, and a manipulator finger is arranged at the end of each manipulator arm, the manipulator body can slide on the base under the action of a first power device, the manipulator arm can be lifted and lowered relative to the base under the action of a second power device, the manipulator arm can be horizontally rotated relative to the base under the action of a third power device, and the manipulator finger has a pair of knuckles that can move relative to each other to open and close the manipulator finger, and the pair of knuckles can move relative to each other under the action of a fourth power device. The utility model sets at least two manipulator arms, and the manipulator arms can translate, lift and rotate under the action of a power device, so as to achieve a good connection between taking and putting workpieces, save processing time, and thus improve production efficiency. However, the manipulator occupies a large area, has a complex structure, and is inconvenient to maintain. At the same time, its initial investment is large, which aggravates the financial tension of small and micro enterprises. Utility Model Content

[0004] The utility model aims to provide a manipulator for grabbing bar materials to overcome the shortcomings of the prior art.

[0005] The purpose of the utility model is achieved through the following technical solutions: a manipulator for grasping bar materials, comprising a cylindrical base and a clamping arm, the clamping arm is hinged at the bottom of the base, the clamping arm is a pair and is respectively located on both sides of the base, a push rod is slidably installed in the base, the push rod passes through the bottom of the base, two fixed shafts are fixed at one end of the push rod passing through the bottom of the base, an oblong through hole is opened on the clamping arm, the fixed shaft slides along the corresponding oblong through hole, and the pair of clamping arms are opened or closed by the sliding of the fixed shaft.

[0006] Preferably, a handle is fixed on the outer wall of the base away from the clamping arm, and the handle extends parallel to the clamping surface of the clamping arm. The push rod is bent into an L shape, and one end of the push rod passes through the bottom of the cylinder and is screwed with a top block, and the fixed axis is fixed on the top block.

[0007] Preferably, the clamping surface in the middle of the clamping arm is in the shape of an arch bridge, and the arch top of the arch bridge faces the outside of the clamping arm.

[0008] Preferably, a slot is formed at one end of the base away from the clamp arm, the slot extends toward the handle, and the bent portion of the push rod is clamped in the slot.

[0009] Preferably, a reinforcing rod is fixed on the outer wall of one end of the base away from the clamping arm, and a strap is fixed on the reinforcing rod, and the strap is used to fix the reinforcing rod on the arm.

[0010] Preferably, the push rod located in the base is sleeved with an A spring, and the A spring is compressed and installed in the base.

[0011] Preferably, a blind hole is provided at one end of the slider away from the push rod, a push rod is inserted into the blind hole, a slide groove connected to the blind hole is also provided on the outer wall of the slider, the slide groove extends along the opening direction of the blind hole, a pin is installed on the push rod located in the blind hole, the pin slides along the slide groove, a B spring is also installed in the blind hole, and the B spring is compressed and installed in the blind hole by the pin.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] Hold the base and push and pull the push rod to open and close the clamp arm to pick up and place the bar material, avoiding the use of manual bar picking and placing and accidents of hand crushing. At the same time, the manufacturing cost is low, the capital investment is small, and the capital tension of small and micro enterprises is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0016] Figure 3 for Figure 2 A local enlarged schematic diagram of the middle A;

[0017] In the figure, 1-base, 2-clamp arm, 3-push rod, 4-fixed axis, 5-oblong through hole, 6-handle, 7-slider, 8-slot, 9-reinforcement rod, 10-binding strap, 11-A spring, 12-top rod, 13-pin, 14-B spring. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme 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 described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model 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 utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figure 1-3 As shown, a robot arm for grasping bar materials comprises a cylindrical base 1 and a clamping arm 2, the clamping arm 2 is hinged at the bottom of the base 1, the clamping arm 2 is a pair and is respectively located on both sides of the base 1, a push rod 3 is slidably installed in the base 1, the push rod 3 passes through the bottom of the base 1, and two fixed shafts 4 are fixed at one end of the push rod 3 passing through the bottom of the tube, an oblong through hole 5 is opened on the clamping arm 2, the fixed shaft 4 slides along the corresponding oblong through hole 5, and the pair of clamping arms 2 are opened or closed by sliding the fixed shaft 4, the base 1 is held by hand and then the push rod 3 is pushed and pulled to open and close the clamping arm 2, and the bar materials are taken and placed, thereby avoiding the use of manual bar taking and placing to avoid hand crushing accidents, and at the same time, the manufacturing cost is low, the capital investment is small, and the capital tension of small and micro enterprises is reduced.

[0025] In this embodiment, if Figure 1 As shown, a handle 6 is fixed on the outer wall of the base 1 away from the clamping arm 2, and the handle 6 extends along the clamping surface parallel to the clamping arm 2. The push rod 3 is bent into an L shape, and a slider 7 (threaded connection is adopted) is screwed on one end of the push rod 3 that passes through the bottom of the cylinder, and the fixed shaft 4 is fixed on the slider 7. The structure is simple and convenient to disassemble. When in use, the handle 6 is held by hand, and then the thumb is buckled on the push rod 3. By clenching the palm, the push rod 3 is moved closer to the handle 6, so that the two clamping arms 2 are closed to clamp the bar material. It can be operated with one hand and is easy to use.

[0026] In this embodiment, if Figure 1 As shown, the clamping surface in the middle of the clamping arm 2 is in the shape of an arch bridge, with the top of the arch bridge facing the outside of the clamping arm 2. The arc-shaped clamping surface makes the clamping of the bar more stable, and the clamping surface at the front end also facilitates the clamping of the plate.

[0027] In this embodiment, if Figure 1 As shown, a slot 8 is formed at one end of the base 1 away from the clamp arm 2 , and the slot 8 extends toward the handle 6 . The bending part of the push rod 3 is stuck in the slot 8 to prevent the push rod 3 from rotating and causing the slider 7 to separate from the push rod 3 .

[0028] In this embodiment, if Figure 1 As shown, a reinforcing rod 9 is fixed on the outer wall of one end of the base 1 away from the clamp arm 2, and a strap 10 is fixed on the reinforcing rod 9. The strap 10 is used to fix the reinforcing rod 9 on the arm. With the support of the reinforcing rod 9, it is easier to clamp the bar material when used with one hand.

[0029] In this embodiment, if Figure 2 As shown, a spring A 11 is sleeved on the push rod 3 in the base 1. The spring A 11 is compressed and installed in the base 1. When the fist is released, the push rod 3 is automatically reset under the action of the spring A 11, avoiding manual reset and making it faster and more convenient to use.

[0030] In this embodiment, if Figure 3As shown, a blind hole is provided at one end of the slider 12 away from the push rod 3, and a push rod 12 is inserted into the blind hole. A slide groove connected to the blind hole is also provided on the outer wall of the slider 12, and the slide groove extends along the opening direction of the blind hole. A pin 13 is installed on the push rod 12 in the blind hole, and the pin 13 slides along the slide groove. A B spring 14 is also installed in the blind hole, and the B spring 14 is compressed and installed in the blind hole by the pin 13. After the bar is clamped, the push rod 12 presses on the bar to provide a pre-pressure, so that the clamping of the bar is more stable and not easy to fall.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A manipulator for grasping bar materials, comprising a cylindrical base (1) and a clamping arm (2), wherein the clamping arm (2) is hinged to the bottom of the base (1), and the clamping arm (2) is a pair and is respectively located on both sides of the base (1). Features: A push rod (3) is slidably mounted in the base (1), the push rod (3) passing through the bottom of the base (1), two fixed shafts (4) are fixed to one end of the push rod (3) passing through the bottom of the tube, an oblong through hole (5) is provided on the clamp arm (2), the fixed shaft (4) slides along the corresponding oblong through hole (5), and the pair of clamp arms (2) are opened or closed by sliding the fixed shaft (4).

2. A bar grabbing manipulator according to claim 1, Features: A handle (6) is fixed on the outer wall of the base (1) away from the clamp arm (2), and the handle (6) extends along a clamping surface parallel to the clamp arm (2). The push rod (3) is bent into an L shape, and a slider (7) is screwed on one end of the push rod (3) that passes through the bottom of the cylinder, and the fixed shaft (4) is fixed on the slider (7).

3. A bar grabbing manipulator according to claim 2, Features: The clamping surface in the middle of the clamping arm (2) is in the shape of an arch bridge, and the top of the arch bridge faces the outside of the clamping arm (2).

4. A bar grabbing manipulator according to claim 2, Features: A slot (8) is provided at one end of the base (1) away from the clamp arm (2), the slot (8) extending towards the handle (6), and the bent portion of the push rod (3) is clamped in the slot (8).

5. A bar grabbing manipulator according to claim 2, Features: A reinforcing rod (9) is fixed on the outer wall of one end of the base (1) away from the clamp arm (2), and a binding belt (10) is fixed on the reinforcing rod (9), and the binding belt (10) is used to fix the reinforcing rod (9) on the arm.

6. A bar grabbing manipulator according to claim 2, Features: The push rod (3) located in the base (1) is sleeved with an A spring (11), and the A spring (11) is compressed and installed in the base (1).

7. A bar grabbing manipulator according to claim 3, Features: A blind hole is formed at one end of the slider (7) away from the push rod (3), a push rod (12) is inserted into the blind hole, a slide groove connected to the blind hole is also formed on the outer wall of the slider (7), the slide groove extends along the opening direction of the blind hole, a pin (13) is installed on the push rod (12) in the blind hole, the pin (13) slides along the slide groove, a B spring (14) is also installed in the blind hole, and the B spring (14) is compressed and installed in the blind hole by the pin (13).

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