Automatic feeding clamping jig for CNC hardware machining

Abstract

The invention relates to the technical field of clamping jigs, in particular to an automatic feeding clamping jig for CNC hardware machining, solves the problem that an action chain is long due to the fact that multi-dimensional action is needed during feeding of a traditional clamping jig, and relates to the technical field of clamping jigs, in particular to an automatic feeding clamping jig for CNC hardware machining. The workbench is guided by an electric guide rail set to move in the length direction of the rack, a plugging assembly is slidably installed at the bottom of the storage bin, coherent notches are formed in the front face, the side, close to the workbench, of the bottom of the storage bin and the back face of the bottom of the storage bin, a guide groove is formed in the side, close to the workbench, of the storage bin, and a protection assembly is slidably installed in the guide groove. In the process that the workbench moves in the length direction of the rack and pushes the plugging assembly, the workbench replaces the position of the plugging assembly and controls the protection assembly to move upwards along the guide groove. The mode of primary bearing and in-situ clamping is adopted, secondary transferring of hardware original pieces is not needed, time consumed by single-time feeding is effectively shortened, and the fault probability can be reduced by reducing the action steps.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of clamping jigs, in particular to a CNC hardware machining automatic feeding clamping jig. BACKGROUND

[0002] The traditional feeding clamping jig process is usually to drive the clamping jaw to move in multiple dimensions, then to reach the storage position to clamp the hardware original piece, and then to move in multiple dimensions again to the machining station, and then to clamp and position again by the station clamp. This process needs multiple start-stop and posture adjustment, resulting in a long overall action chain; and in the multiple dimension moving process of the return stroke, the hardware original piece is also prone to falling down due to the loosening of the clamping jaw. SUMMARY

[0003] In view of the deficiencies of the prior art, the purpose of the present application is to provide a CNC hardware machining automatic feeding clamping jig to solve the problem of long action chain caused by multiple dimension action during feeding of the traditional clamping jig.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a CNC hardware machining automatic feeding clamping jig, comprising a storage bin on a rack for storing hardware original pieces, a workbench provided on the rack, the workbench being guided to move along the length direction of the rack by an electric guide rail group, and a blocking assembly being slidably installed at the bottom of the storage bin; The bottom of the storage bin is provided with a continuous notch on the front side, near the workbench, and on the back side, the side of the storage bin near the workbench is provided with a guide groove, and a protection assembly is slidably installed in the guide groove; during the movement of the workbench along the length direction of the rack and the pushing of the blocking assembly, the workbench replaces the position of the blocking assembly and controls the upward movement of the protection assembly along the guide groove; a clamping assembly is installed on the workbench, and the clamping assembly is used to clamp the lowest hardware original piece in the storage bin along the front and back sides of the notch.

[0005] As a preferred, the clamping assembly comprises a bidirectional screw rod rotatably connected in the groove on the top surface of the workbench, a motor is installed on the back surface of the workbench and in transmission connection with the bidirectional screw rod, and a clamp is sleeved on the bidirectional screw rod.

[0006] As a preferred, the clamp comprises a sliding block installed on the bidirectional screw rod, two clamping blocks arranged in an up-down manner are hinged on the sliding block, the opposite sides of the two clamping blocks are each provided with a sliding groove, the sliding grooves are arranged in a T shape, the depth of the sliding grooves decreases from the side near the sliding block to the other side, a vertical plate is embedded between the two sliding grooves, and an adjusting screw rod is rotatably installed between the extension end of the middle part of the sliding block and the vertical plate.

[0007] As a preferred, the blocking assembly comprises a blocking plate provided at the bottom of the storage bin, the top surface of the blocking plate is level with the top surface of the workbench, two hangers are installed on the front and back surfaces of the blocking plate, and the hangers are slidably embedded with the guide rail strips on the surface of the storage bin.

[0008] Preferably, a reset spring is connected between the hanging piece away from the side of the workbench and the surface of the storage bin, and the blocking plate coincides with the bottom of the storage bin when the reset spring is not pulled.

[0009] Preferably, the protection assembly includes a baffle that is slidingly fitted with the guide groove, the baffle is made of heavy metal material, the surface of the baffle is provided with a connecting strip, the front and back surfaces of the storage bin are provided with two guide wheels, the top of the connecting strip is connected with a lifting rope, one end of the lifting rope passes through the two guide wheels and is connected with the top of the hanging piece away from the side of the workbench.

[0010] Preferably, when the workbench does not push the blocking plate, the lowest position of the bottom of the baffle is within the height range between the top surface of the blocking plate and the middle of the lowest hardware element.

[0011] Preferably, when the side of the workbench close to the blocking plate coincides with the inner wall of the side of the storage bin away from the guide groove, the gap between the top of the baffle and the top wall of the guide groove is not less than 1 cm.

[0012] Through the above technical scheme, the present application provides a CNC hardware machining automatic feeding clamping jig, which has at least the following beneficial effects: 1. The present application drives the workbench to move along the length direction of the rack, pushes the blocking plate to move and replaces its position, can directly receive the lowest hardware element of the storage bin, cooperates with the clamping assembly to clamp the lowest hardware element in the storage bin at this time, and the workbench is reset, directly clamps the hardware element to be processed in the workbench receiving position, without the need for secondary transfer of the hardware element, which can effectively shorten the time consumption of single feeding, and the action steps are reduced to reduce the failure probability.

[0013] 2. In the process of clamping the hardware element by the clamping assembly until the workbench is reset, the bottom of the hardware element is supported by the workbench, and the condition of the hardware element falling off does not occur.

[0014] 3. The present application drives the upright plate to move along the T-shaped sliding groove by rotating the adjusting screw rod, which can adjust the clamping angle of the two clamping blocks to adapt to hardware elements of different thickness and width, without the need for frequent replacement of the clamp, and the universality is improved.

[0015] 4. The baffle of the present application is linked with the blocking assembly through the lifting rope and the guide wheel, so that the movement of the workbench can not only control the movement of the blocking plate, but also control the lifting of the baffle. When there is no feeding, the baffle is in a low position to block the hardware element from sliding off, and when feeding, the baffle automatically rises with the blocking plate, which can effectively save the cost of power source.

[0016] 5、 The storage bin, the workbench, the clamping assembly and the protection assembly of the application are integrated on the same rack, the structure is compact, the workbench moves in a single direction, and no multi-dimensional moving space needs to be reserved, so that workshop installation space can be saved, and high-density production line layout can be adapted. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the present application, constitute a part of the present application, the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings: Figure 1 It is a schematic diagram of the overall structure of the application; Figure 2 It is a schematic diagram of the plane structure of the application; Figure 3 It is a schematic diagram of the structure of the clamping assembly of the application; Figure 4 It is a schematic diagram of the split structure of the clamp of the application; Figure 5 It is a schematic diagram of the installation structure of the plugging assembly of the application; Figure 6 It is a schematic diagram of the installation structure of the guide rail strip of the application; Figure 7 It is a schematic diagram of the structure of the lifting piece and the lifting rope of the application.

[0018] In the drawings: 1, rack; 2, storage bin; 201, notch; 202, guide groove; 203, guide rail strip; 3, electric guide rail group; 4, workbench; 5, plugging assembly; 501, plugging plate; 502, lifting piece; 503, return spring; 6, protection assembly; 601, baffle; 602, link strip; 603, guide wheel; 604, lifting rope; 7, clamping assembly; 701, bidirectional screw; 702, motor; 703, clamp; 7031, sliding block; 7032, clamping block; 7033, sliding groove; 7034, upright plate; 7035, adjusting screw. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, not all the embodiments. In the description of the application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the application and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0020] Embodiment One Please refer to Figures 1-7 The application discloses a CNC hardware machining automatic feeding clamping jig which can effectively shorten the time consumption of single feeding. The automatic feeding clamping jig comprises a hardware component machining rack 1 and a detachable storage bin 2 installed on the extension end of the front and rear sides of the top surface of the rack 1, the storage bin 2 is used for placing a plurality of stacked hardware components, and the bottom slidingly installed blocking component 5 is used as a bottom support to block the bottom opening of the storage bin 2, so that the hardware components are prevented from being separated from the inner cavity of the storage bin 2. The rack 1 is also provided with a workbench 4 installed through an electric guide rail set 3, and the workbench 4 is guided to move along the length direction of the rack 1 through the electric guide rail set 3.

[0021] The bottom of the storage bin 2 is provided with a continuous notch 201 on the front side, the side close to the workbench 4 and the back side, the storage bin 2 can be provided in a form matched with the hardware components to be machined, the height of the notch 201 is greater than the height of the hardware components to be machined, so that the subsequent hardware components can be discharged from the storage bin 2. The side close to the workbench 4 of the storage bin 2 is provided with a guide groove 202, the guide groove 202 is slidably provided with a protection component 6, the protection component 6 comprises a baffle 601 slidably embedded in the guide groove 202, in the conventional state, the bottom of the baffle 601 of the protection component 6 is flush with the bottom of the storage bin 2, so that the hardware components in the storage bin 2 are prevented from rolling out.

[0022] In the above, the blocking assembly 5 includes a blocking plate 501 arranged at the bottom of the storage bin 2, the top surface of the blocking plate 501 is flush with the top surface of the workbench 4, the front surface and the back surface of the blocking plate 501 are both provided with two lifting members 502, the lifting members 502 are slidingly fitted with the guide rail strips 203 on the surface of the storage bin 2, the lifting member 502 away from the workbench 4 is connected with a reset spring 503 between the surface of the storage bin 2, when the reset spring 503 is not pulled, the blocking plate 501 is coincided with the bottom of the storage bin 2. Therefore, in the process of moving the workbench 4 along the length direction of the rack 1 to the side of the storage bin 2 by driving the electric guide rail assembly 3, the workbench 4 will gradually generate a pushing force on the blocking plate 501, so as to drive the lifting members 502 to slide along the guide rail strips 203, and the reset spring 503 is stretched at the same time. In this stage, the workbench 4 will gradually replace the position of the blocking plate 501, so that the lowest hardware components in the storage bin 2 are transferred from the blocking plate 501 to the workbench 4. Moreover, due to the linkage between the protection assembly 6 and the blocking assembly 5, the baffle 601 of the protection assembly 6 will gradually move upward along the guide groove 202, so that the slot 201 is not blocked on the discharging side. After that, by driving the clamping assembly 7 arranged on the workbench 4, the clamping assembly 7 clamps the lowest hardware components in the storage bin 2 along the front and back sides of the slot 201, and the electric guide rail assembly 3 is driven again to return the workbench 4 to the original position, so that the hardware component loading and clamping are completed. In the process of returning the workbench 4 to the original position, the pushing effect of the workbench 4 on the blocking plate 501 is gradually removed, and the reset spring 503 drives the blocking plate 501 to return to the original position under the elastic and reset properties of the reset spring 503, so as to timely block the bottom opening of the storage bin 2.

[0023] It is worth mentioning that, in the embodiment, the workbench 4 is driven to move along the length direction of the single rack 1 by the electric guide rail assembly 3, so as to drive the blocking plate 501 to move and replace the position of the blocking plate 501. Since the top surface of the workbench 4 is flush with the top surface of the blocking plate 501, the workbench 4 replaces the position of the blocking plate 501 as the blocking plate 501 without height difference when blocking the bottom of the storage bin 2, and the lowest hardware components in the storage bin 2 are directly dropped into the receiving position of the workbench 4. The clamping assembly 7 does not need to be additionally moved, and directly clamps the hardware components to be processed in the receiving position of the workbench 4, without the need for secondary transfer of the hardware components. The clamping assembly 7 adopts the mode of one-time receiving and in-situ clamping, eliminates the cumulative error of secondary clamping, and saves the multi-dimensional actions of moving the clamping assembly 7, transferring the hardware components and positioning the workbench 4, so as to effectively shorten the time consumption of single loading and reduce the failure probability by reducing the action steps.

[0024] In addition, during the process that the hardware components are clamped by the clamping assembly 7 until the workbench 4 returns to the original position, the bottom of the hardware components is supported by the workbench 4, and the hardware components will not fall off.

[0025] Embodiment two The conventional clamping assembly 7 generally has poor adaptability and uneven clamping force, especially for hardware components of different thickness and width, which needs to frequently replace the clamping tool, resulting in low efficiency. Therefore, based on the first embodiment, the adjustable clamping assembly 7 is provided to realize accurate and stable clamping of hardware components of multiple sizes. As shown in Figure 1 、 Figure 3 and Figure 4 The clamping assembly 7 includes a bidirectional screw rod 701 rotatably connected in the groove on the top surface of the workbench 4, and a motor 702 is installed on the back surface of the workbench 4 and connected with the bidirectional screw rod 701, and a clamp 703 is sleeved on the bidirectional screw rod 701. The forward and reverse rotation of the bidirectional screw rod 701 driven by the motor 702 can drive the two clamps 703 to move towards opposite or opposite directions, realizing clamping and loosening of the hardware components.

[0026] The clamp 703 includes a sliding block 7031 installed on the bidirectional screw rod 701, and two clamping blocks 7032 arranged above and below are hinged on the sliding block 7031, and the clamping blocks 7032 can rotate along the hinge point under the action of external force. The opposite sides of the two clamping blocks 7032 are provided with sliding grooves 7033, the sliding grooves 7033 are arranged in T shape, a vertical plate 7034 is embedded between the two sliding grooves 7033, and an adjusting screw rod 7035 is rotatably installed between the extension end of the middle part of the sliding block 7031 and the vertical plate 7034. The adjusting screw rod 7035 can be manually or electrically adjusted as needed, which is not limited here. The clamp 703 drives the vertical plate 7034 to move along the T-shaped sliding groove 7033 towards the direction away from the sliding block 7031 by rotating the adjusting screw rod 7035. Since the depth of the T-shaped sliding groove 7033 decreases from the side close to the sliding block 7031 to the other side, when the vertical plate 7034 moves away from the sliding block 7031, the clamping ends of the two clamping blocks 7032 move away from each other, the clamping angle increases, and the hardware components of larger thickness or width are adapted; on the contrary, when the vertical plate 7034 moves towards the sliding block 7031, the clamping ends of the two clamping blocks 7032 move close to each other, the clamping angle decreases, and the hardware components of smaller thickness or width are adapted. At the same time, the structure of the T-shaped sliding groove 7033 can ensure that the vertical plate 7034 does not fall off when moving, ensuring the stability of the adjustment.

[0027] Embodiment Three In the above-mentioned first embodiment, when the workbench 4 pushes the blocking plate 501 to move, the notch 201 close to the workbench 4 side of the storage bin 2 will form an opening. If the baffle 601 does not timely intercept, after the workbench 4 resets, the hardware components in the storage bin 2 may slide along the notch 201 close to the workbench 4 side, resulting in damage to the hardware components. To solve this blind area of protection for the linkage feeding, based on the first embodiment, the protection assembly 6 linked with the blocking assembly 5 is provided to realize the coordinated control of the movement of the blocking plate 501 and the automatic lifting of the baffle 601. As shown in Figure 1、 Figure 2 、 Figures 5-7 As shown in the figure, the surface of the baffle 601 is provided with a connecting strip 602, the front and back surfaces of the storage bin 2 are provided with two guide wheels 603, the top of the connecting strip 602 is connected with a lifting rope 604, one end of the lifting rope 604 is wound around the two guide wheels 603 and connected with the top of the lifting piece 502 away from the workbench 4. When the blocking plate 501 is pushed by the workbench 4, the lifting piece 502 generates a pulling force on the lifting rope 604 away from the workbench 4, the lifting rope 604 generates an upward pulling force on the baffle 601 under the traction of the two guide wheels 603, so as to promote the baffle 601 to move upward in the guide groove 202, and promote the bottom of the baffle 601 to be adjusted to a position higher than the bottom of the guide groove 202. Conversely, when the workbench 4 moves to the original position and the return spring 503 is contracted to control the blocking plate 501 to return, the lifting rope 604 is loosened, and the baffle 601 is made of heavy metal material, so that the baffle 601 moves downward along the guide groove 202 under the action of its own gravity until the baffle 601 returns to the initial height.

[0028] When the workbench 4 does not push the blocking plate 501, the lowest position of the bottom of the baffle 601 is within the height range between the top surface of the blocking plate 501 and the middle part of the lowest hardware original element. It neither blocks the butt joint of the lowest hardware original element and the workbench 4, nor blocks the side surface of the stacked hardware original element above, so as to prevent side sliding.

[0029] When the side of the workbench 4 close to the blocking plate 501 coincides with the inner wall of the storage bin 2 away from the guide groove 202, the gap between the top of the baffle 601 and the top wall of the guide groove 202 is not less than 1 cm. It avoids the situation that the protection assembly 6 hinders the movement of the blocking plate 501, so that the workbench 4 cannot completely replace the original position of the blocking plate 501.

[0030] It is worth mentioning that the protection assembly 6 does not need to additionally configure a power source for driving the baffle 601 to move up and down. It uses the movement of the blocking plate 501 as power, and realizes the automatic lifting of the baffle 601 through the transmission of the lifting rope 604 and the guide wheel 603. It not only avoids the cost increase and control complexity brought by the additional driving source, but also ensures the precise cooperation of the feeding protection avoidance and the protection closure when there is no feeding, and solves the risk of sliding of the hardware original element in the storage bin 2 in the linkage feeding process.

[0031] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A CNC hardware machining automatic feeding clamping jig, comprising a rack (1) and a storage bin (2) for storing hardware raw materials, characterized in that: The rack (1) is provided with a workbench (4), the workbench (4) is guided to move along the length direction of the rack (1) through the electric guide rail group (3), the bottom of the storage bin (2) is slidably provided with a blocking assembly (5); The bottom of the storage bin (2) is provided with a continuous notch (201) on the front side, the side close to the workbench (4) and the back side, the side of the storage bin (2) close to the workbench (4) is provided with a guide groove (202), the guide groove (202) is slidably provided with a protection assembly (6), during the process that the workbench (4) moves along the length direction of the rack (1) and pushes the blocking assembly (5), the workbench (4) replaces the position of the blocking assembly (5) and controls the protection assembly (6) to move upwards along the guide groove (202), the workbench (4) is provided with a clamping assembly (7), the clamping assembly (7) is used for clamping the lowest hardware component in the storage bin (2) along the front and back sides of the notch (201).

2. The CNC hardware machining automatic feeding clamping jig according to claim 1, characterized in that: The clamping assembly (7) comprises a bidirectional screw rod (701) rotatably connected in the groove of the top surface of the workbench (4), a motor (702) is installed on the back surface of the workbench (4) and is in transmission connection with the bidirectional screw rod (701), and a clamp (703) is sleeved on the bidirectional screw rod (701).

3. The CNC hardware machining automatic feeding clamping jig according to claim 1, characterized in that: The clamp (703) comprises a sliding block (7031) installed on the bidirectional screw rod (701), two clamping blocks (7032) arranged in an up-down mode are hinged to the sliding block (7031), the opposite sides of the two clamping blocks (7032) are each provided with a sliding groove (7033), the sliding groove (7033) is arranged in a T shape, the depth of the sliding groove (7033) decreases from the side close to the sliding block (7031) to the other side, a vertical plate (7034) is embedded between the two sliding grooves (7033), and an adjusting screw rod (7035) is rotatably installed between the extension end of the middle part of the sliding block (7031) and the vertical plate (7034).

4. The CNC hardware machining automatic feeding clamping jig according to claim 1, characterized in that: The blocking assembly (5) comprises a blocking plate (501) arranged at the bottom of the storage bin (2), the top surface of the blocking plate (501) is level with the top surface of the workbench (4), the front and back surfaces of the blocking plate (501) are each provided with two hangers (502), and the hangers (502) are slidably embedded with guide rail strips (203) on the surface of the storage bin (2).

5. The CNC hardware machining automatic feeding clamping jig according to claim 1, characterized in that: The hangers (502) away from the workbench (4) are connected with the surface of the storage bin (2) through return springs (503), and when the return springs (503) are not pulled, the blocking plate (501) coincides with the bottom of the storage bin (2).

6. The CNC hardware machining automatic feeding clamping jig according to claim 1, characterized in that: The protection assembly (6) comprises a baffle (601) slidably embedded with the guide groove (202), the surface of the baffle (601) is provided with a link strip (602), the front and back surfaces of the storage bin (2) are each provided with two guide wheels (603), the top of the link strip (602) is connected with a lifting rope (604), one end of the lifting rope (604) passes through the two guide wheels (603) and is connected with the top of the hanger (502) away from the workbench (4).

7. The CNC hardware machining automatic feeding clamping jig according to claim 1, characterized in that: When the workbench (4) does not push the blocking plate (501), the lowest position of the bottom of the baffle (601) is within the height range between the top surface of the blocking plate (501) and the middle part of the lowest hardware component.

8. The CNC hardware machining automatic feeding clamping jig according to claim 1, characterized in that: When the workbench (4) is close to the side of the sealing plate (501) and coincides with the inner wall of the side of the storage bin (2) away from the guide groove (202), the gap between the top of the baffle (601) and the top wall of the guide groove (202) is not less than 1 cm.

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