A workpiece series clamping device

Abstract

The present invention relates to the technical field of numerical control machining, and in particular to a workpiece serial clamping device, comprising a base plate, a plurality of sliding seats, a driving source, a driving source fixing plate, and a fixing seat, wherein the driving source fixing plate and the fixing seat are respectively fixed on both sides of the base plate, a linear guide is fixed on the base plate, a plurality of sliding seats are arranged on the linear guide, the driving source drives the clamping push rod to perform telescopic movement along the length direction of the linear guide, and the clamping push rod provides a clamping force by abutting against the workpiece or the sliding seat; between adjacent sliding seats and between the fixing seat and the adjacent sliding seat, there are product support plates fixed on either adjacent side, and both sides of the plurality of sliding seats and the inner side of the fixing seat are provided with product push rods. The workpiece serial clamping device of the present invention not only ensures the consistency of the processed workpieces, but also increases the number of workpieces processed in each batch, improves the space utilization rate of the processing platform, greatly reduces the cost of processing workpieces, and is conducive to the implementation of automatic loading and unloading of manipulators.

Description

Technical Field

[0001] The invention relates to the technical field of numerical control machining, and in particular to a workpiece serial clamping device. Background Art

[0002] With the continuous progress of enterprise technological transformation, a large number of CNC processing equipment has entered the mechanical processing industry. When processing various mechanical workpieces, if the traditional "one-to-one clamping device" is used for processing workpieces, it will cause a waste of space on the working platform of the CNC processing equipment. Although the consistency of the processing quality of the workpiece by the CNC processing equipment is effectively guaranteed, the number of workpieces processed in each batch is small, and the efficiency of the CNC processing equipment cannot be effectively improved, and the processing cost is increased a lot. An improvement scheme of the prior art, such as the patent document with publication number CN202180355U, discloses a pneumatic clamping device for processing workpieces of CNC machine tools, including a base plate and a bridge plate, a CNC rotary table is installed at one end of the base plate, a disc tailstock is installed at the other end of the base plate, the CNC rotary table is connected to the CNC turntable servo motor, three cylinder-shaped cylinders are arranged above the bridge plate, and three workpiece seats for placing the processed workpieces are arranged above the bridge plate, and the cylinder-shaped cylinder is provided with a hand-pull valve. Although the above technical solution realizes the simultaneous processing of three workpieces in the same batch, its essence is actually equivalent to the arrangement and simultaneous use of multiple CNC clamping devices in the prior art. The consistency of the processing quality of the workpieces is affected by the parameter differences of different devices. At the same time, the manufacturing cost of the equipment is relatively high.

[0003] In view of the above technical problems, it is necessary to improve them. Summary of the invention

[0004] The purpose of the present invention is to provide a workpiece series clamping device in view of the defects of the prior art.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A workpiece serial clamping device comprises a base plate, a plurality of sliding seats, a driving source, a driving source fixing plate, and a fixed seat, wherein the driving source fixing plate and the fixed seat are respectively fixed on both sides of the base plate, a linear guide rail is fixed on the base plate, the plurality of sliding seats are arranged on the linear guide rail, and the plurality of sliding seats are slidably connected to the linear guide rail; the driving source is fixed to the driving source fixing plate, the driving source drives the clamping push rod to perform a telescopic action along the length direction of the linear guide rail, and the clamping push rod provides a clamping force by abutting against the workpiece or the sliding seat; a product pallet fixed on any adjacent side is provided between adjacent sliding seats and between the fixed seat and the adjacent sliding seat, the product pallet is used to place the workpiece, and product push rods are provided on both sides of the plurality of sliding seats and on the inner side of the fixed seat, which are used to abut against the placed workpiece or the clamping push rod to transmit the clamping force, and the length of the product pallet is less than or equal to the length of the placed workpiece.

[0007] As a preferred solution, the bottoms of the multiple sliding seats are fixedly connected to ball sliders, and are slidably connected to the linear guide rails through the ball sliders.

[0008] As a preferred solution, there are reset mechanisms between the adjacent sliding seats and between the fixed seat and the adjacent sliding seats, which are used to reset the spacing distance between the adjacent sliding seats and the spacing distance between the fixed seat and the adjacent sliding seat respectively.

[0009] As a preferred embodiment, the reset mechanism includes a bolt rod, a return spring, a bolt fixing structure, and a bolt limiting block. The bolt fixing structure and the bolt limiting block are respectively installed under adjacent sliding seats, and under the fixed seat and the adjacent sliding seat. The bolt rod passes through the bolt limiting block and is fixedly connected to the bolt fixing structure. The return spring is sleeved on the bolt rod between the bolt limiting block and the bolt fixing structure.

[0010] As a preferred solution, a chip guard plate is arranged on the linear guide rail.

[0011] As a preferred solution, the product pallet has a support rod.

[0012] As a preferred solution, a product support plate fixed to the sliding seat side is provided between the driving source fixing plate and the adjacent sliding seat.

[0013] As a preferred solution, there are multiple product ejector rods on both sides of the multiple sliding seats and on the inner side of the fixed seat, and the multiple product ejector rods are arranged in parallel in a direction perpendicular to the length direction of the linear guide rail.

[0014] Compared with the prior art, the workpiece serial clamping device of the present invention not only ensures the consistency of the processed workpieces, but also increases the number of processed workpieces in each batch, improves the space utilization of the processing platform, greatly reduces the cost of processing workpieces, and is conducive to the implementation of automatic loading and unloading of robots. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a workpiece series clamping device according to Embodiment 1 of the present invention;

[0016] Figure 2 It is an exploded schematic diagram of the overall structure of the workpiece series clamping device according to the first embodiment of the present invention;

[0017] Figure 3 It is an exploded schematic diagram of the overall structure of the workpiece series clamping device according to the first embodiment of the present invention under the front view;

[0018] Figure 4 It is a structural schematic diagram of a reset mechanism of a workpiece series clamping device according to a first embodiment of the present invention;

[0019] Figure 5This is a schematic diagram of the overall structure of the workpiece series clamping device according to the second embodiment of the present invention after clamping the workpiece;

[0020] Among them: 1. Base plate; 2. Sliding seat; 3. Cylinder; 4. Drive source fixing plate; 5. Fixed seat; 6. Product support plate; 7. Product push rod; 11. Linear guide; 12. Chip guard plate; 21. Ball slider; 31. Pressing push rod; 61. Support rod; 81. Bolt rod; 82. Return spring; 83. Bolt fixing block; 84. Bolt limit block. DETAILED DESCRIPTION

[0021] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0022] Embodiment 1:

[0023] like Figure 1-4 As shown, the workpiece serial clamping device of this embodiment is used for performing a simultaneous clamping process when processing multiple workpieces, and includes a base plate 1, multiple sliding seats 2, a driving source, a driving source fixing plate 4, and a fixing seat 5. The workpiece is placed between the multiple sliding seats 2, and the clamping force is provided by the driving source to perform serial clamping.

[0024] Specifically, the driving source can be selected to be pneumatically driven, hydraulically driven or servo motor driven. This embodiment is described by taking the driving source cylinder 3 of pneumatically driven driving source with low cost as an example. The driving source fixing plate 4 and the fixing seat 5 are respectively fixed on both sides of the bottom plate 1. The driving source fixing plate 4 fixes the cylinder 3 by bolts. The cylinder 3 drives its clamping push rod 31 to perform telescopic movement along the length direction of the linear guide 11. The clamping push rod 31 provides a clamping force by abutting against the workpiece or the sliding seat 2; the fixing seat 5 is used to limit multiple sliding seats 2 and as a support end for clamping the workpiece. The fixing method can be bolted or welded.

[0025] A linear guide 11 is fixed on the base plate 1. The number is adjusted according to the volume and weight of the workpiece. The general number is designed to be 2, which can ensure the smoothness of sliding and the convenience of device assembly. Multiple sliding seats 2 are arranged on the linear guide 11. The number of sliding seats 2 is increased or decreased according to the processing speed requirements or the size of the workpiece. Multiple sliding seats 2 are slidably connected to the linear guide 11 so that multiple sliding seats 2 can slide in the length direction of the linear guide 11. The connection method of the sliding connection is not limited, such as through a pulley connection or a slider connection. More preferably, a ball slider 21 is fixedly connected to the bottom of the multiple sliding seats 2, and the ball slider 21 is slidably connected to the linear guide 11. The ball slider 21 has the low resistance of pulley sliding and the stability of slider sliding, which can improve the stability and accuracy of the workpiece clamping process. More preferably, a chip guard plate 12 is arranged on the linear guide 11 to prevent the debris from the workpiece processing from affecting the sliding. The chip guard plate 12 is designed as a telescopic structure to adapt to the sliding of the sliding seat 2.

[0026] The product support plate 6 is fixed to any adjacent side between adjacent sliding seats 2 and between fixed seats 5 and adjacent sliding seats 2. Any adjacent side can be on the side close to the driving source fixed plate 4 or on the side close to the fixed seat 5, or either side is acceptable. The direction of the fixed connection is not limited, as long as only one side is fixedly connected. The product support plate 6 is used to place the workpiece to be clamped. Different types of product support plates 6 can be adapted according to products of different shapes. Product push rods 7 are provided on both sides of multiple sliding seats 2 and on the inner side of the fixed seat 5 for abutting against the placed workpiece or clamping push rod 31 to transmit the clamping force. The shape of the product push rod 7 is adapted to the shape of the workpiece abutted so that the product push rod 7 and the workpiece can be stably abutted. More preferably, the product push rods 7 on both sides of the sliding seat 2 are integrally formed parts, which are connected by clamping, welding or pinning through the through holes by opening a through hole on the sliding seat 2. The integrally formed part can transmit the clamping force more stably when the device is clamped in series, and can avoid the displacement caused by the assembly accuracy causing the workpiece or parts to pop out during clamping, thereby improving the safety of the device. The length of the product support plate 6 is designed to be less than or equal to the length of the workpiece to be placed, so that when the workpiece is pressed, the product support plate 6 will not be pressed between the adjacent sliding seats 2 or fixed seats 5, affecting the pressing of the workpiece. Furthermore, a support rod 61 is designed and fixed on the product support plate 6, which can be adapted to support and stably place products of different shapes, and enhance the stability of the pressing device. More preferably, the support rod 61 is designed as a telescopic structure with adjustable height to adapt to different types of workpieces.

[0027] Furthermore, a reset mechanism is designed between adjacent sliding seats 2 and between the fixed seat 5 and the adjacent sliding seat 2, which is used to reset the spacing distance between adjacent sliding seats 2 and the spacing distance between the fixed seat 5 and the adjacent sliding seat 2, respectively, to improve the practicality of the device. The reset mechanism can be a designed manual reset handle or a compression cylinder between adjacent sliding seats 2 for compression reset, etc. More preferably, the design includes a bolt rod 81, a return spring 82, a bolt fixing structure, and a bolt limit block 84, wherein the bolt fixing structure includes a bolt fixing block 83 and a bolt fixing hole, and the bolt fixing block 83 and the bolt limit block 84 are respectively installed under the adjacent sliding seats 2 The bolt fixing hole is opened at the bottom of the fixing seat 5, the bolt rod 81 passes through the bolt limit block 84 and is fixedly connected with the bolt fixing block 83 or the bolt fixing hole, and the return spring 82 is sleeved on the bolt rod 81 between the bolt limit block 84 and the bolt fixing block 83 or the bolt fixing hole. When the device is tightened, the bolt limit block 84 and the bolt fixing block 83 or the bolt fixing hole are close to each other, compressing the return spring 82. After the tightening is completed, the tightening push rod 31 removes the tightening force, and the return spring 82 pushes the bolt limit block 84 back to complete the reset. At the same time, the bolt is restricted from disengaging from the bolt limit block 84 to prevent the position of the sliding seat 2 from being too deviated from the practical position.

[0028] When the workpiece series clamping device is in use, the workpieces are placed in sequence on the product tray with multiple sliding seats 2. The cylinder 3 drives the cylinder 3 push rod to press against the adjacent product push rod to provide clamping force. The multiple sliding seats 2 are connected in series to transmit the clamping force to each other for synchronous series clamping to complete the clamping process. After the clamping is completed, the cylinder 3 drives the cylinder 3 to unload the force, the reset mechanism is activated, the multiple sliding seats 2 return to their positions, and the workpieces are released.

[0029] The workpiece serial clamping device of this embodiment not only ensures the consistency of the processed workpieces, but also increases the number of processed workpieces in each batch, improves the space utilization of the processing platform, greatly reduces the cost of processing the workpieces, and is conducive to the implementation of automatic loading and unloading of the robot.

[0030] Embodiment 2:

[0031] The difference between the workpiece serial clamping device of this embodiment and the first embodiment is that:

[0032] like Figure 5 As shown, there is a product support plate fixed to the side of the sliding seat between the driving source fixing plate and the adjacent sliding seat, and the cylinder drives the clamping push rod to apply a clamping force against the placed workpiece. Compared with the first embodiment, the gap between the driving source fixing plate and the adjacent sliding seat is utilized to further improve the space utilization of the platform space.

[0033] For other structures, please refer to Example 1.

[0034] Embodiment three:

[0035] The difference between the workpiece serial clamping device of this embodiment and the first embodiment is that:

[0036] In this embodiment, there are multiple product push rods on both sides of the multiple sliding seats and the inner side of the fixed seat. The multiple product push rods are arranged in parallel in a direction perpendicular to the length direction of the linear guide rail. The spacing between the product push rods is adapted to the size of the product workpiece, so that several workpieces can be placed in parallel on the same pallet at the same time. When pressing, the multiple product push rods are pressed against different workpieces at the same time, further increasing the number of workpieces processed in each batch. More preferably, the connection between the product push rod and the sliding seat and the fixed seat is a connection structure with adjustable height, such as the product push rod is movably connected to the sliding seat and the fixed seat, and locked at the required height through a locking mechanism to adapt to workpieces of different heights.

[0037] For other structures, please refer to Example 1.

[0038] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A workpiece series clamping device, characterized in that: The invention comprises a base plate, a plurality of sliding seats, a driving source, a driving source fixing plate, and a fixing seat, wherein the driving source fixing plate and the fixing seat are respectively fixed on both sides of the base plate, and a linear guide rail is fixed on the base plate, the plurality of sliding seats are arranged on the linear guide rail, and the plurality of sliding seats are slidably connected with the linear guide rail; the driving source is fixed to the driving source fixing plate, and the driving source drives the clamping push rod to perform a telescopic movement along the length direction of the linear guide rail, and the clamping push rod provides a clamping force by abutting against the workpiece or the sliding seat; a product support plate fixed to any adjacent side is provided between adjacent sliding seats and between the fixed seat and the adjacent sliding seat, the product support plate is used for placing the workpiece, and product push rods are provided on both sides of the plurality of sliding seats and on the inner side of the fixed seat, for abutting against the placed workpiece or the clamping push rod to transmit the clamping force; the length of the product support plate is less than or equal to the length of the placed workpiece; the product push rods on both sides of the sliding seat are integrally formed parts, and a through through hole is provided on the sliding seat to pass through the through hole for clamping or welding or bayonet connection; The bottoms of the multiple sliding seats are fixedly connected to the ball sliders, and are slidably connected to the linear guide rails through the ball sliders.

2. A workpiece tandem clamping device as claimed in claim 1, characterized in that: A reset mechanism is provided between the adjacent sliding seats and between the fixed seat and the adjacent sliding seat, which is used to reset the spacing distance between the adjacent sliding seats and the spacing distance between the fixed seat and the adjacent sliding seat respectively.

3. A workpiece tandem clamping device as claimed in claim 2, characterized in that: The reset mechanism includes a bolt rod, a return spring, a bolt fixing structure, and a bolt limiting block. The bolt fixing structure and the bolt limiting block are respectively installed under the adjacent sliding seat, and under the fixed seat and the adjacent sliding seat. The bolt rod passes through the bolt limiting block and is fixedly connected to the bolt fixing structure. The return spring is sleeved on the bolt rod between the bolt limiting block and the bolt fixing structure.

4. A workpiece tandem clamping device as claimed in claim 3, characterized in that: A chip guard plate is arranged on the linear guide rail.

5. A workpiece tandem clamping device as claimed in claim 4, characterized in that: The product support plate is provided with a support rod.

6. A workpiece tandem clamping device as claimed in claim 5, characterized in that: A product support plate fixed to the side of the sliding seat is provided between the driving source fixing plate and the adjacent sliding seat.

7. A workpiece tandem clamping device as claimed in claim 6, characterized in that: There are multiple product ejector rods on both sides of the multiple sliding seats and the inner side of the fixed seat, and the multiple product ejector rods are arranged in parallel in a direction perpendicular to the length direction of the linear guide rail.

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