Bar clamp tool

Abstract

The utility model discloses a bar stock fixture tooling, including base, fixed seat, rotating groove, bi-directional screw, moving block, clamping block, driving mechanism and auxiliary locating piece, the fixed seat is provided with the rotating groove on the fixed seat, the bi-directional screw is rotatingly provided in the rotating groove, the moving block is provided with the clamping block, the driving mechanism is provided with the auxiliary locating piece, and the moving block is provided with the clamping block. One end of the two-way screw rod penetrates through the side wall of the fixed seat and extends outwards, the outer wall of the two-way screw rod is in threaded connection with the two moving blocks, clamping blocks are connected to the upper portions of the two moving blocks, the clamping blocks are symmetrically arranged, and a driving mechanism is arranged on the side wall of the fixed seat; the driving mechanism is used for driving the two-way screw rod to rotate forwards and backwards, the two auxiliary positioning blocks are fixedly installed above the fixing base and are symmetrically arranged, and a placing plate is installed in the middle of the upper portion of the fixing base and located on a rotating groove. Meanwhile, the practicability is higher.

Description

Technical Field

[0001] This utility model relates to the technical field of bar stock processing, and in particular to the technical field of bar stock clamping fixtures. Background Technology

[0002] Bar stock generally refers to straight strip-shaped processed materials with simple cross-sectional shapes such as circles, squares, and hexagons. Bar stock is usually one of the most common materials in machining, such as steel bars, aluminum bars, wooden bars, and plastic bars. Bar stock usually needs to be straightened, chamfered, shot blasted, flawed, and ground to improve the overall performance of the bar stock and facilitate subsequent bar stock cutting and other processing steps.

[0003] Currently, bar stock typically requires a fixed structure for fixation and limiting during processing to ensure its stability. However, existing fixed structures cannot clamp workpieces of different sizes, resulting in low practicality.

[0004] To address the problems mentioned above, for example, a Chinese patent document with authorization announcement number CN20532828U describes a manual cutting machine, including a cutting base, a cutting frame at one end of the cutting base, a cutting blade mounted on the cutting frame, a rotating clamping plate that can rotate around itself, and a pushing clamping plate that can move away from or towards the rotating clamping plate along the length of the cutting base. An angle measuring plate is provided on the cutting base at the position of the rotating clamping plate. The rotating clamping plate and the pushing clamping plate can rotate around itself to achieve the effect of fixing and clamping different workpieces. At the same time, it can also clamp the workpieces according to different angle requirements, thereby cutting inclined surfaces with different inclination angles. However, this device still has the following drawbacks:

[0005] After the workpiece is installed, the device needs to tighten the loosening bolts to fix the rotating clamp in a fixed state, thereby securing the workpiece. When the angle of the rotating clamp needs to be readjusted, the loosening bolts need to be rotated again to loosen or tighten them, which is troublesome, time-consuming and labor-intensive.

[0006] To address the problems mentioned above, for example, a Chinese patent document with authorization announcement number CN206794933U describes a bar cutting machine, including a base, a cutting frame mounted on the base, a cutting blade mounted on the cutting frame, a rotating clamping plate, a pushing clamping plate, and a pushing assembly that drives the pushing clamping plate closer to or away from the rotating clamping plate to clamp the bar. The base has a rotating shaft perpendicular to its surface, and the rotating clamping plate is rotatably connected to the rotating shaft. The rotating clamping plate rotates around the rotating shaft at a certain angle, and after rotation, the elastic locking tooth assembly engages with the locking hole to fix it, thus fixing the rotating clamping plate after rotation without the need for bolt tightening. This makes fixing the rotating clamping plate after adjustment more convenient. However, this device still has the following drawbacks:

[0007] Although the device uses clamping plates and rotating clamping plates to clamp the workpiece, the cross-sections of the clamping plates and rotating clamping plates are planar, which means that the clamping plates and rotating clamping plates cannot concentrate all the clamping force on the force-bearing surface, thus affecting the subsequent processing effect. Summary of the Invention

[0008] The purpose of this invention is to solve the problems in the prior art and to propose a bar stock clamping fixture that can improve the stability of the bar stock during the processing and is more practical.

[0009] To achieve the above objectives, this utility model proposes a bar stock clamping fixture, including a base, a fixed seat, a rotating groove, a bidirectional screw, a moving block, a clamping block, a driving mechanism, and auxiliary positioning blocks. The fixed seat is located at the upper center of the base, and a rotating groove is formed on the fixed seat. The bidirectional screw is rotatably mounted within the rotating groove. One end of the bidirectional screw penetrates the side wall of the fixed seat and extends outward. Two moving blocks are threadedly connected to the outer wall of the bidirectional screw. A clamping block is connected above each of the two moving blocks, and the clamping blocks are symmetrically arranged. A driving mechanism is located on the side wall of the fixed seat, and the driving mechanism drives the bidirectional screw to rotate in both directions. Two auxiliary positioning blocks are fixedly mounted above the fixed seat, and the auxiliary positioning blocks are symmetrically arranged.

[0010] Preferably, a placement plate is installed at the upper center of the fixed base and on the rotating groove, the placement plate being located between the two clamping blocks.

[0011] Preferably, the two clamping blocks have a V-shaped structure on the side that is close to each other.

[0012] Preferably, the drive mechanism includes an L-shaped support plate, a motor, an output shaft, a main gear, and a secondary gear. The motor is mounted on the side wall of the L-shaped support plate, and the output end of the motor is connected to the output shaft through the side wall of the L-shaped support plate. The main gear is rotatably connected to the outer wall of the output shaft, and the secondary gear is located on the outermost outer wall of the bidirectional screw. The main gear and the secondary gear are meshed together.

[0013] Preferably, both auxiliary positioning blocks have notches on their sides that are close to each other, and the size of the notches is larger than the size of the V-shaped structure on the clamping block.

[0014] Preferably, the base is symmetrically provided with U-shaped brackets above it, and each U-shaped bracket is provided with a vertical guide rail above it. A vertical electric slider is slidably fitted on each vertical guide rail. A horizontal bracket is provided between two vertical electric sliders. A horizontal guide rail is provided above the horizontal bracket. A horizontal electric slider is slidably fitted on the horizontal guide rail. A support plate is connected to the side wall of the horizontal electric slider. A cylinder is provided on the support plate. The output end of the cylinder passes through the lower part of the support plate and is connected to a hydraulic rod. The end of the hydraulic rod is connected to a cylinder gripper.

[0015] The beneficial effects of this utility model are:

[0016] This invention improves the clamping effect on bar stock through the combined action of clamping blocks, a drive mechanism, and an auxiliary positioning block. First, the vertical and horizontal electric sliders move along the vertical and horizontal guide rails until the cylinder clamping jaws are positioned directly above the bar stock. Then, the cylinder drives the hydraulic rod to descend, which in turn lowers and opens the clamping jaws to hold the bar stock. Next, the hydraulic rod rises until the end of the bar stock is aligned with the notch on the auxiliary positioning block. The vertical electric slider then moves, causing the bar stock to pass through the notch in the auxiliary positioning block and between the two clamping blocks. Finally, the cylinder clamping jaws are released, the motor is started, and the motor drives the output shaft to rotate. The main gear rotates, which in turn drives the secondary gear to rotate, and the secondary gear drives the bidirectional screw to rotate. This causes the two moving blocks on the bidirectional screw to move closer together, which in turn drives the two clamping blocks to move closer to the bar stock until the clamping blocks are tightly pressed against the outer wall of the bar stock. By setting the cross-section of the clamping blocks into a V-shaped structure, the clamping blocks can concentrate all the clamping force on the force-bearing surface, thereby improving the clamping effect and facilitating subsequent processing. The clamping blocks in this application have stronger clamping force and higher practicality. This solves the problem that in the previous structure, the cross-sections of the clamping plate and the rotating clamping plate were both planar, which prevented the clamping plate and the rotating clamping plate from concentrating all the clamping force on the force-bearing surface, thus affecting the subsequent processing effect. Attached Figure Description

[0017] Figure 1 This is a front view of a bar stock clamping fixture according to this utility model;

[0018] Figure 2 This is a schematic diagram of the clamping block of a bar stock clamping fixture according to the present invention;

[0019] Figure 3 This is a schematic diagram of the drive mechanism of a bar stock clamping fixture according to the present invention;

[0020] Figure 4 This is a schematic diagram of an auxiliary positioning block for a bar stock clamping fixture according to this utility model;

[0021] In the diagram: 1-base, 2-fixed seat, 21-placement plate, 3-rotating groove, 4-bidirectional screw, 5-moving block, 6-clamping block, 7-drive mechanism, 71-L-shaped support plate, 72-motor, 73-output shaft, 74-main gear, 75-secondary gear, 8-auxiliary positioning block, 81-notch, 9-U-shaped bracket, 10-vertical guide rail, 11-vertical electric slider, 12-horizontal bracket, 13-transverse guide rail, 14-transverse electric slider, 15-support plate, 16-cylinder, 17-hydraulic rod, 18-cylinder gripper. Detailed Implementation

[0022] See Figures 1 to 4 This utility model discloses a bar stock clamping fixture, comprising a base 1, a fixed seat 2, a rotating groove 3, a bidirectional screw 4, moving blocks 5, clamping blocks 6, a driving mechanism 7, and an auxiliary positioning block 8. The fixed seat 2 is located at the upper center of the base 1. The fixed seat 2 has a rotating groove 3, within which the bidirectional screw 4 is rotatably mounted. One end of the bidirectional screw 4 penetrates the side wall of the fixed seat 2 and extends outward. Two moving blocks 5 are threadedly connected to the outer wall of the bidirectional screw 4. Clamping blocks 6 are connected above each of the two moving blocks 5, and the clamping blocks 6 are symmetrically arranged. The driving mechanism is located on the side wall of the fixed seat 2. 7. The driving mechanism 7 is used to drive the bidirectional screw 4 to rotate in both directions. Two auxiliary positioning blocks 8 are fixedly installed above the fixed base 2. The auxiliary positioning blocks 8 are symmetrically arranged. Since the two moving blocks 5 are threadedly connected to the bidirectional screw 4, and the bidirectional screw 4 has a completely closed spiral groove, these spiral grooves allow the moving blocks 5 to reciprocate on the bidirectional screw 4. Therefore, when the bidirectional screw 4 rotates in the forward direction, the two moving blocks 5 can move closer to each other and clamp the bar. When the bidirectional screw 4 rotates in the reverse direction, it can drive the two moving blocks 5 away from each other, thereby releasing the bar and achieving clamping and fixing of the bar.

[0023] See Figure 2 A placement plate 21 is installed on the upper center of the fixed base 2 and on the rotating groove 3. The placement plate 21 is located between the two clamping blocks 6. By setting the placement plate 21, the bar can be placed flat on the placement plate 21. At the same time, a certain gap is left between the placement plate 21 and the bidirectional screw 4, so as to avoid affecting the rotation of the bidirectional screw 4.

[0024] See Figure 2 The two clamping blocks 6 have a V-shaped structure on the side that is close to each other. By setting the cross section of the clamping block 6 into a V-shaped structure, the clamping block 6 can concentrate all the clamping force on the force-bearing surface, thereby improving the clamping effect.

[0025] See Figure 3 The driving mechanism 7 includes an L-shaped support plate 71, a motor 72, an output shaft 73, a main gear 74, and a secondary gear 75. The motor 72 is mounted on the side wall of the L-shaped support plate 71. The output end of the motor 72 passes through the side wall of the L-shaped support plate 71 and is connected to the output shaft 73. The main gear 74 is rotatably connected to the outer wall of the output shaft 73. The secondary gear 75 is located on the outermost wall of the bidirectional screw 4. The main gear 74 and the secondary gear 75 are meshed together. In this application, the input end of the motor 72 is connected to an external power source, so it is controlled by an external power source. When the motor 72 drives the output shaft 73 to rotate, the output shaft 73 drives the main gear 74 to rotate, the main gear 74 drives the secondary gear 75 to rotate, and the secondary gear 75 drives the bidirectional screw 4 to rotate, so that the two moving blocks 5 on the bidirectional screw 4 move closer to each other, thereby achieving clamping and fixing of bars of different sizes, which is more practical.

[0026] See Figure 4 Both auxiliary positioning blocks 8 have notches 81 on their sides that are close to each other. The size of the notches 81 is larger than the size of the V-shaped structure on the clamping block 6. By setting the notches 81, the bar can pass through the notches 81 and then be clamped and fixed by the clamping block 6, thereby improving the stability of the bar.

[0027] See Figure 1A U-shaped bracket 9 is symmetrically arranged above the base 1. A vertical guide rail 10 is arranged above each U-shaped bracket 9. A vertical electric slider 11 is slidably fitted on each vertical guide rail 10. A horizontal bracket 12 is provided between two vertical electric sliders 11. A horizontal guide rail 13 is provided above the horizontal bracket 12. A horizontal electric slider 14 is slidably fitted on the horizontal guide rail 13. A support plate 15 is connected to the side wall of the horizontal electric slider 14. A cylinder 16 is provided on the support plate 15. The output end of the cylinder 16 passes through the lower part of the support plate 15 and is connected to a hydraulic rod 17. The end of the hydraulic rod 17 is connected to a cylinder clamp. The claw 18 is equipped with an electric motor (not shown in the figure) on both the vertical guide rail 10 and the horizontal guide rail 13 in this application. The electric motor drives the vertical electric slider 11 and the horizontal electric slider 14 to move linearly and laterally on the vertical guide rail 10 and the horizontal guide rail 13, thereby driving the cylinder gripper 18 to move back and forth and left and right, which facilitates the clamping and transfer of the bar stock. At the same time, the working principle of the cylinder gripper 18 is to drive the piston (not shown in the figure) to move by compressed air, so that the piston moves under force. When the air pressure acts on the piston, the piston will move outward or retract inward, thereby driving the gripper to open or close, thereby realizing the clamping and fixing of the bar stock.

[0028] The working process of this utility model:

[0029] In operation, this utility model discloses a bar stock clamping fixture. First, the vertical electric slider 11 and the horizontal electric slider 14 move along the vertical guide rail 10 and the horizontal guide rail 13, respectively, until the cylinder gripper 18 moves directly above the bar stock. Then, the cylinder 16 drives the hydraulic rod 17 to descend, which in turn lowers the cylinder gripper 18 and opens it to clamp the bar stock. Next, the hydraulic rod 17 rises until the end of the bar stock is aligned with the notch 81 on the auxiliary positioning block 8. Then, the movement of the vertical electric slider 11 causes the bar stock to enter through the notch 81 on the auxiliary positioning block 8 and pass between the two clamping blocks 6. After releasing the cylinder gripper 18, start the motor 72. The motor 72 drives the output shaft 73 to rotate, which in turn drives the main gear 74 to rotate. The main gear 74 drives the secondary gear 75 to rotate, which in turn drives the bidirectional screw 4 to rotate. This causes the two moving blocks 5 on the bidirectional screw 4 to move closer to each other, which in turn drives the two clamping blocks 6 to move closer to the bar stock until the clamping blocks 6 are pressed tightly against the outer wall of the bar stock, thus clamping the bar stock for subsequent processing. After the bar stock is processed, the bidirectional screw 4 rotates in the opposite direction to move the clamping blocks 6 away from each other. Finally, the cylinder gripper 18 picks up the bar stock and transfers it to the loading device.

[0030] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0031] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A bar clamp tool, characterized by: The utility model provides a kind of double-sided clamp, including base (1), fixed seat (2), rotating groove (3), bidirectional screw rod (4), moving block (5), clamping block (6), drive mechanism (7) and auxiliary positioning block (8), the upper middle part of the base (1) is equipped with fixed seat (2), the fixed seat (2) is equipped with rotating groove (3), the rotating groove (3) is equipped with bidirectional screw rod (4) rotation, the one end of the bidirectional screw rod (4) penetrates the side wall of fixed seat (2) and extends outward, the outer wall of the bidirectional screw rod (4) is screw-connected with two the moving block (5), the upper of two the moving block (5) is connected with clamping block (6), the clamping block (6) is symmetrically arranged, the side wall of the fixed seat (2) is equipped with drive mechanism (7), the drive mechanism (7) is used to drive bidirectional screw rod (4) positive and negative rotation, the upper of the fixed seat (2) is fixedly installed with two the auxiliary positioning block (8), the auxiliary positioning block (8) is symmetrically arranged.

2. A bar clamp tool as claimed in claim 1, wherein: The upper middle part of the fixed seat (2) and on the rotating groove (3) is installed with a placing plate (21), and the placing plate (21) is located between the two clamping blocks (6).

3. A bar clamp tool as claimed in claim 1, wherein: The side of the two clamping blocks (6) close to each other is in V-shaped structure.

4. A bar clamp tool as claimed in claim 1, wherein: The drive mechanism (7) includes L-shaped support plate (71), motor (72), output shaft (73), main gear (74) and secondary gear (75), the side wall of the L-shaped support plate (71) is installed with motor (72), the output end of the motor (72) is connected with output shaft (73) penetrating the side wall of the L-shaped support plate (71), the outer wall of the output shaft (73) is rotatably connected with the main gear (74), the secondary gear (75) is located on the outermost end of the bidirectional screw rod (4), and the main gear (74) is engaged with the secondary gear (75).

5. A bar clamp tool as claimed in claim 1, wherein: The side of the two auxiliary positioning blocks (8) close to each other is provided with a notch (81), and the size of the notch (81) is greater than the size of the V-shaped structure on the clamping block (6).

6. A bar clamp tool as claimed in claim 1, wherein: The upper of the base (1) is symmetrically provided with concave-shaped support (9), and the upper of the concave-shaped support (9) is provided with vertical guide rail (10), the vertical guide rail (10) is slidably connected with vertical electric sliding block (11), the horizontal support (12) is arranged between the two vertical electric sliding blocks (11), the upper of the horizontal support (12) is provided with horizontal guide rail (13), the horizontal guide rail (13) is slidably connected with horizontal electric sliding block (14), the side wall of the horizontal electric sliding block (14) is connected with support plate (15), the support plate (15) is provided with air cylinder (16), the output end of the air cylinder (16) is connected with hydraulic rod (17) penetrating the lower of the support plate (15), and the tail end of the hydraulic rod (17) is connected with air cylinder clamping jaw (18).

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