Clamping device for metal bar

Abstract

The utility model provides a clamping device for a metal bar. The clamping device for the metal bar comprises a base, the top face of the base is fixedly connected with a fixing seat, and the fixing seat is provided with two adjusting and clamping mechanisms and a protection mechanism; the adjusting and clamping mechanism comprises an air cylinder, a top plate, a push box, an adjusting box, five top columns, five arc-shaped chucks, five telescopic rods, two net bags and a plurality of steel balls, the air cylinder is fixedly installed on the fixing base, the top plate is fixedly connected to the output end of the air cylinder, the push box is slidably installed on the fixing base, and the adjusting box is fixedly connected to the top plate. The rear end of the push box is fixedly connected with the surface of one side of the top plate, the adjusting box is slidably mounted in the push box, and the five top columns are slidably mounted in the adjusting box. The clamping device for the metal bar provided by the utility model can be used for self-adaptively clamping metal castings and clamping the metal castings with different diameters, and has the advantages of wide universality and long service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of bar material clamps, in particular to a clamping device for metal bar materials. Background Art

[0002] The clamping device is a commonly used mechanical device in industry, and is very common on machining machine tools. During the processing of the bar, the bar needs to be effectively tightened so that the bar can be accurately processed.

[0003] After searching, the existing patent (authorization announcement number: CN218396220U) discloses a bar clamping device, including: a first clamping member fixedly mounted on a workbench, the first clamping member is provided with a slide groove; a second clamping member movably arranged on the workbench, the second clamping member is provided with a slide rod, the slide rod passes through the slide groove and can move along the slide groove; a driving mechanism connected to the second clamping member, the driving mechanism pushes the second clamping member to move along the direction of the slide groove, so that the second clamping member and the second clamping member clamp the bar, the first clamping member includes a first clamping plate and a first top plate, the slide groove is arranged on the first top plate, the second clamping member includes a second clamping plate and a second top plate, and the slide rod is arranged on the second top plate. Compared with the prior art, the bar clamping device provided by the invention has a simple structure, is easy to operate, can clamp multiple bars at one time, is more reliable in clamping, and has higher clamping efficiency.

[0004] However, there are still some shortcomings in the above structure. When the device is used to clamp circular metal castings, the upper and lower positions of the castings are limited and the use is single. Moreover, since each circular casting has only four effective clamping points, the castings may roll during rotation processing, resulting in insufficient effective clamping force.

[0005] Therefore, it is necessary to provide a new clamping device for metal bars to solve the above-mentioned technical problems. Utility Model Content

[0006] The technical problem solved by the utility model is to provide a clamping device for metal bars which can perform adaptive clamping on metal castings and clamp metal castings with different diameters, has wide versatility and long service life.

[0007] In order to solve the above technical problems, the clamping device for metal bars provided by the utility model comprises: a base, the top surface of the base is fixedly connected with a fixing seat, and the fixing seat is provided with two adjusting clamping mechanisms and a protection mechanism;

[0008] The adjusting and clamping mechanism comprises a cylinder, a top plate, a push box, an adjusting box, five top columns, five arc-shaped chucks, five telescopic rods, two net bags and a plurality of steel balls. The cylinder is fixedly mounted on a fixed seat, the top plate is fixedly connected to the output end of the cylinder, the push box is slidably mounted on the fixed seat, the rear end of the push box is fixedly connected to a side surface of the top plate, the adjusting box is slidably mounted in the push box, the five top columns are all slidably mounted in the adjusting box, the five arc-shaped chucks are respectively hinged at the front ends of the five top columns, the five telescopic rods are respectively fixedly connected to the rear ends of the five top columns, the two net bags are respectively fixedly connected to the rear ends of the two top columns, the several steel balls are placed inside the adjusting box, and the other ends of the five telescopic rods and the other ends of the two net bags are fixedly connected to the inner wall of the adjusting box.

[0009] As a further solution of the utility model, the protection mechanism includes a telescopic tube, a ejector pin, a spring, a pressure plate and a control button. The telescopic tube is fixedly mounted on the outer wall of the fixed seat, the ejector pin is slidably mounted in the telescopic tube, the spring is fixedly connected to the ejector pin, the pressure plate is fixedly connected to one end of the ejector pin, and the control button is arranged in the telescopic tube.

[0010] As a further solution of the utility model, two T-shaped frames are symmetrically arranged on the surface of the base, and the casting body is placed on the top surface of the T-shaped frames.

[0011] As a further solution of the utility model, the telescopic rod is located at the center of the rear surface of the top column, and a return spring is also arranged inside the telescopic rod.

[0012] As a further solution of the utility model, the cylinder, the top plate and the push box are located on the same horizontal center line, and the size of the adjustment box is matched with the size of the push box.

[0013] As a further solution of the utility model, the two net bags divide the steel balls into three equal groups and place them in the adjustment box, and the total volume of the steel balls is smaller than the inner cavity volume of the adjustment box.

[0014] Compared with the related art, the clamping device for metal bars provided by the utility model has the following beneficial effects:

[0015] 1. The utility model can perform adaptive clamping work on metal castings through the adjustment mechanism, and can also complete the clamping work of metal castings with different diameters, thereby improving versatility;

[0016] 2. The utility model is provided with a protection mechanism, which can stop the advancement of the cylinder while performing the clamping work, thereby protecting the clamping device and increasing its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 A schematic diagram of the three-dimensional structure of the clamping device for metal bars provided by the utility model;

[0019] Figure 2 A schematic diagram of the structure of the adjustment mechanism of the clamping device for metal bars provided by the utility model;

[0020] Figure 3 The utility model is a schematic diagram of the protection mechanism structure of the clamping device for metal bars provided by the utility model.

[0021] In the figure: 1. base; 2. fixing seat; 3. cylinder; 4. ejector plate; 5. push box; 6. adjusting box; 7. ejector column; 8. arc chuck; 9. telescopic rod; 10. net bag; 11. steel ball; 12. telescopic tube; 13. ejector pin; 14. spring; 15. pressure plate; 16. control button; 17. T-shaped frame; 18. casting body. DETAILED DESCRIPTION

[0022] Please refer to Figure 1 , Figure 2 and Figure 3 ,in, Figure 1 It is a three-dimensional structural schematic diagram of the clamping device for metal bars of the utility model; Figure 2 It is a schematic diagram of the structure of the adjustment mechanism of the clamping device for metal bars of the utility model; Figure 3 The schematic diagram of the protection mechanism structure of the clamping device for metal bars of the utility model is shown in FIG. The clamping device for metal bars comprises: a base 1, a fixing seat 2 is fixedly connected to the top surface of the base 1, and two adjusting clamping mechanisms and a protection mechanism are arranged on the fixing seat 2;

[0023] The adjusting clamping mechanism comprises a cylinder 3, a top plate 4, a push box 5, an adjusting box 6, five top columns 7, five arc-shaped chucks 8, five telescopic rods 9, two net bags 10 and a plurality of steel balls 11. The cylinder 3 is fixedly mounted on the fixing seat 2, the top plate 4 is fixedly connected to the output end of the cylinder 3, the push box 5 is slidably mounted on the fixing seat 2, the rear end of the push box 5 is fixedly connected to the one side surface of the top plate 4, the adjusting box 6 is slidably mounted in the push box 5, the five top columns 7 are all slidably mounted in the adjusting box 6, the five arc-shaped chucks 8 are respectively hinged at the front ends of the five top columns 7, the five telescopic rods 9 are respectively fixedly connected to the rear ends of the five top columns 7, the two net bags 10 are respectively fixedly connected to the rear ends of the two top columns 7, the several steel balls 11 are placed inside the adjusting box 6, and the other ends of the five telescopic rods 9 and the other ends of the two net bags 10 are fixedly connected to the inner wall of the adjusting box 6.

[0024] like Figure 3 As shown, the protection mechanism includes a telescopic tube 12, an ejector pin 13, a spring 14, a pressure plate 15 and a control button 16. The telescopic tube 12 is fixedly mounted on the outer wall of the fixing seat 2, the ejector pin 13 is slidably mounted in the telescopic tube 12, the spring 14 is fixedly connected to the ejector pin 13, the pressure plate 15 is fixedly connected to one end of the ejector pin 13, and the control button 16 is arranged in the telescopic tube 12;

[0025] By setting the protection mechanism, when the casting body 18 pushes the ejector pin 13 in the pressure plate 15 to the control button 16 , the cylinder 3 can be controlled to stop advancing, which is beneficial to the protection of the cylinder 3 and the casting body 18 .

[0026] like Figure 1 As shown, two T-shaped frames 17 are symmetrically arranged on the surface of the base 1, and a casting body 18 is placed on the top surface of the T-shaped frame 17;

[0027] By means of two symmetrically arranged T-shaped frames 17, the casting body 18 can be placed at a suitable position for adjusting the clamping machine, which is beneficial to the clamping work and reduces mistakes.

[0028] like Figure 2 As shown, the telescopic rod 9 is located at the center of the rear surface of the top column 7, and a return spring is also arranged inside the telescopic rod 9.

[0029] The telescopic rod 9 is also provided with a return spring, so that the top column 7 can be returned to a certain position after the clamping work is completed, and the steel ball 11 can be loosened again to prepare for the next clamping work on the other side.

[0030] like Figure 2 As shown, the cylinder 3, the top plate 4 and the push box 5 are located on the same horizontal center line, and the size of the adjustment box 6 is adapted to the size of the push box 5;

[0031] By arranging the cylinder 3, the top plate 4 and the push box 5 on the same horizontal center line, the loss of the cylinder 3 and the push box 5 can be reduced.

[0032] like Figure 2 As shown, the two net bags 10 divide the steel balls 11 into three equal groups and place them in the adjustment box 6, and the total volume of the steel balls 11 is smaller than the inner cavity volume of the adjustment box 6;

[0033] The arrangement of dividing a plurality of steel balls 11 into three groups and placing them in the adjustment box 6 by means of the net bag 10 can greatly alleviate the situation where the steel balls 11 accumulate at the bottom due to gravity, thereby improving the smoothness of the operation of the adjustment mechanism.

[0034] The working principle of the clamping device for metal bars provided by the utility model is as follows:

[0035] The first step: when in use, first place the casting body 18 on the T-shaped frame 17, then start the cylinder 3 to push the adjustment box 6 out, and then push the casting body 18 to contact the arc-shaped clamp 8 on the other side, and when the top column 7 is pushed inward, the steel ball 11 is squeezed. Since the steel ball 11 is not fully placed in the adjustment box 6, the shape of the casting body 18 can be adapted to the shape, and the arc-shaped clamp 8 is hinged, so that the shape of the casting body 18 can be clamped to a certain extent;

[0036] The second step: when the arc-shaped chuck 8 adaptively clamps the casting body 18, the casting body 18 contacts the pressure plate 15, thereby pressing the ejector pin 13 onto the control button 16, wherein the distance between the ejector pin 13 and the control button 16 and the distance that the pressure plate 15 exceeds the arc-shaped chuck 8 are just right, so when the arc-shaped chuck 8 clamps the casting body 18, the control button 16 controls the cylinder 3 to stop advancing, thereby protecting the device;

[0037] The third step: after completing the clamping work, the cylinder 3 returns, and at the same time, the return spring inside the telescopic rod 9 returns the top column 7 to a certain extent, which is convenient for the next clamping work. The pressure plate 15 will also return under the action of the spring 14.

[0038] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above utility model, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field;

[0039] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0040] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations or direct or indirect applications may be made to these embodiments without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the attached claims and their equivalents, which are equally included in the scope of patent protection of the present invention.

Claims

1. A clamping device for metal bars, characterized in that: include: A base, the top surface of which is fixedly connected to a fixing seat, on which two adjusting clamping mechanisms and a protection mechanism are provided; The adjusting and clamping mechanism comprises a cylinder, a top plate, a push box, an adjusting box, five top columns, five arc-shaped chucks, five telescopic rods, two net bags and a plurality of steel balls. The cylinder is fixedly mounted on a fixed seat, the top plate is fixedly connected to the output end of the cylinder, the push box is slidably mounted on the fixed seat, the rear end of the push box is fixedly connected to a side surface of the top plate, the adjusting box is slidably mounted in the push box, the five top columns are slidably mounted in the adjusting box, the five arc-shaped chucks are respectively hinged at the front ends of the five top columns, the five telescopic rods are respectively fixedly connected to the rear ends of the five top columns, the two net bags are respectively fixedly connected to the rear ends of the corresponding two top columns, a plurality of steel balls are placed inside the adjusting box, and the other ends of the five telescopic rods and the other ends of the two net bags are fixedly connected to the inner wall of the adjusting box.

2. The clamping device for metal bars according to claim 1, characterized in that: The protection mechanism includes a telescopic tube, an ejector pin, a spring, a pressure plate and a control button. The telescopic tube is fixedly mounted on the outer wall of the fixing seat, the ejector pin is slidably mounted in the telescopic tube, the spring is fixedly connected to the ejector pin, the pressure plate is fixedly connected to one end of the ejector pin, and the control button is arranged in the telescopic tube.

3. The clamping device for metal bars according to claim 1, characterized in that: Two T-shaped frames are symmetrically arranged on the surface of the base, and the casting body is placed on the top surface of the T-shaped frames.

4. The clamping device for metal bars according to claim 1, characterized in that: The telescopic rod is located at the center of the rear surface of the top column, and a return spring is also arranged inside the telescopic rod.

5. The clamping device for metal bars according to claim 1, characterized in that: The cylinder, the top plate and the push box are located on the same horizontal center line, and the size of the adjustment box is matched with the size of the push box.

6. The clamping device for metal bars according to claim 1, characterized in that: The two net bags divide the steel balls into three equal groups and place them in the regulating box, and the total volume of the steel balls is smaller than the inner cavity volume of the regulating box.

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