Clamp structure for machining workpieces in stacked mode

Abstract

The invention relates to a stacked fixture structure for machining workpieces, which is characterized by comprising an up-down driving unit, a front-back driving unit, a top plate core assembly, a wire cutting machine worktable, a right-angle supporting seat and a bottom plate, the top plate core assembly is movably connected onto the bottom plate and is provided with a plurality of top blocks, and the top blocks are combined in a multi-layer and multi-column manner. A stacked structure is formed; the front-and-back driving wheel is arranged at the rear end of the top plate core assembly to drive the top plate core assembly to move front and back to form a top plate core assembly front-and-back movement structure; the up-down driving unit is arranged at the top end of the top plate core assembly to drive the top plate core assembly to move up and down to form a top plate core assembly up-down movement structure; each ejection block is connected with a front-back adjusting element, the ejection plate core assembly is positioned front and back through the front-back driving unit, the ejection plate core assembly is positioned up and down through the up-down driving unit so that the ejection blocks at different positions can correspond to workpieces of different heights, and the ejection blocks can move front and back through the front-back adjusting elements to form a positioning and clamping structure for the workpieces. The device has the characteristics of short labor time of workers, low labor intensity, high efficiency and the like.

Description

Technical Field

[0001] The present invention relates to a fixture structure for stacked machining workpieces, which is applicable to local wire cutting machining of multiple pin shafts. In particular, it is applicable to the machining of the pin shaft pressing plate groove of an injection molding machine. It belongs to the technical field of cutting machining fixtures. Background Art

[0002] Currently, due to the unreasonable structure of the fixture, only a single workpiece can be clamped each time. Therefore, during the wire cutting machining process, generally, a fixture (workpiece fixture) is used to position and clamp single workpieces one by one, and then wire cutting parameters are set to perform local machining on single workpieces, and only one workpiece can be clamped and machined each time. Therefore, workers have a long repetitive labor time, high labor intensity, and low efficiency on the operating table. Especially in the case of batch processing, there are problems such as long repetitive labor time, high labor intensity, low efficiency, and large consumption of man-hours and manpower.

[0003] After searching the Chinese patent announcements, no technical solutions identical to the wire cutting stacked pin shaft pressing fixture and the wire cutting stacked pin shaft pressing fixture have been found to be publicly disclosed in the Chinese patent announcements. Although the Chinese patent announcements also disclose some technical solutions of positioning fixtures, for example: the inventions with application numbers 2023108771660 and 2023105865948 and the utility model patent with application number 2023206042708. Although the said technical solutions can solve the clamping and positioning problems of special-shaped parts such as springs and arc-shaped workpieces and also have certain technical effects, they cannot solve the problems existing in the prior art such as inability to perform multi-axis simultaneous machining and low efficiency. Therefore, there is a need to provide a positioning fixture that can be used for multi-axis simultaneous machining to solve the problems of low machining efficiency and inability to meet production requirements existing in the prior art. Therefore, the fixtures of the prior art cannot meet the production needs, and an innovative fixture needs to be designed that can clamp multiple workpieces simultaneously at one time to achieve simultaneous machining of multiple workpieces, so as to reduce the labor intensity of workers and improve the machining efficiency. Summary of the Invention

[0004] The object of the present invention is to solve the problems of long repetitive labor time, high labor intensity, low efficiency, and consumption of man-hours and human resources existing in the existing wire cutting machining fixtures, and to provide a fixture structure for stacked machining workpieces. It has outstanding substantial features and remarkable technical progress such as short labor time for workers, low labor intensity, high efficiency, and saving of man-hours and human resources.

[0005] The object of the present invention can be achieved by adopting the following technical solutions:

[0006] A fixture structure for stacked machining workpieces, which generally includes a wire cutting machine workbench, a right-angle support seat and a bottom plate arranged on the wire cutting machine workbench. Its structural characteristics are as follows: The main structure includes an up-and-down drive unit, a front-and-back drive unit and a top plate core assembly. The top plate core assembly is movably connected to the bottom plate. The top plate core assembly has a number of top blocks, and the number of top blocks is combined in multiple layers and multiple columns to form a stacked structure; front-and-back drive wheels are arranged at the rear end of the top plate core assembly to drive the top plate core assembly to move back and forth, constituting the front-and-back movement structure of the top plate core assembly; the up-and-down drive unit is arranged at the top of the top plate core assembly to drive the top plate core assembly to move up and down, constituting the up-and-down movement structure of the top plate core assembly; each top block is connected with a front-and-back adjustment element. The top plate core assembly is positioned front and back through the front-and-back drive unit, and the top plate core assembly is positioned up and down through the up-and-down drive unit so that the top blocks at different positions correspond to workpieces at different heights. The top blocks are moved back and forth through the front-and-back adjustment elements to form a positioning and clamping structure for the workpieces; thus forming a fixture structure for stacked machining workpieces.

[0007] The object of the present invention can also be achieved by adopting the following technical solutions:

[0008] Further, the top plate core assembly includes a top block core, a left side plate, a right side plate, a top block core bottom plate, an upper plate, a rear top plate and a number of top blocks. The number of top blocks are movably built in the top block core and are combined in multiple layers and multiple columns to form a stacked movable pressing structure; the left side of the top block core is movably connected to the left side plate, and the right side is movably connected to the right side plate, forming an up-and-down sliding connection structure of the top block core; the top block core bottom plate is connected to the bottom plate by bolts and forms a front-and-back position adjustment structure through the strip-shaped through holes in the bottom plate; the drive output end of the up-and-down drive unit passes through the upper plate and is connected to the top of the top block core to form an up-and-down movement drive structure; the drive output end of the front-and-back drive unit is connected to the top block core bottom plate to form a front-and-back movement drive structure.

[0009] Further, the up-and-down drive unit is a manual drive structure, which includes an up-and-down handwheel, an up-and-down lead screw and a lead screw base. The power output end of the up-and-down handwheel is connected to the top of the up-and-down lead screw. The bottom end of the up-and-down lead screw passes through the upper plate and is connected to the lead screw base. The lead screw base is fixedly connected to the top of the top block core, forming a front-and-back movement drive structure for the top plate core assembly.

[0010] Further, the top surface of the top block core is provided with a concave position for placing the lead screw base. The lead screw base is fixedly connected to the top block core through a pin; a flange is provided at the connection between the lead screw base and the top block core, and the flange is fixedly connected to the top block core through an internal hexagonal bolt 8; a copper round flange is provided at the connection between the up-and-down lead screw and the upper plate.

[0011] Furthermore, the front and rear drive units are manual drive structures, including front and rear handwheels, front and rear lead screws, and nut seats. The power output end of the front and rear handwheels is connected to the rear end of the front and rear lead screws. The front end of the front and rear lead screws passes through the lead screw fixing seat and is connected to the nut seat. The lead screw fixing seat is fixedly connected to the middle groove of the bottom plate. The nut seat passes through the middle groove of the bottom plate and is fixedly connected to the bottom surface of the top block core bottom plate. The middle groove is a through-type strip groove, forming an up-and-down movement drive structure for the top block core.

[0012] Furthermore, the lead screw fixing seat is fixedly connected to the middle groove of the bottom plate by an internal hexagonal bolt; the front and rear lead screws are connected to the lead screw fixing seat through bearings and connected to the front and rear handwheels through nuts; the nut seat is fixedly connected to the bottom surface of the top block core bottom plate by an internal hexagonal bolt.

[0013] Furthermore, on both sides of the middle groove 31-1 of the bottom plate, there is a side groove respectively. The side groove is a through-type strip groove. The top block core bottom plate is connected to the bottom plate by bolts 18, forming a front and rear position adjustable connection structure.

[0014] The characteristics and beneficial technical effects of the present invention are as follows:

[0015] 1. Since the main structure of the present invention is provided with an up-and-down drive unit, a front-and-rear drive unit, and a top plate core assembly, the top plate core assembly is movably connected to the bottom plate. The top plate core assembly has a number of top blocks, and the number of top blocks is combined in multiple layers and multiple columns, forming a superimposed structure; the front-and-rear drive wheels are arranged at the rear end of the top plate core assembly to drive the top plate core assembly to move back and forth, constituting a front-and-rear movement structure of the top plate core assembly; the up-and-down drive unit is arranged at the top of the top plate core assembly to drive the top plate core assembly to move up and down, constituting an up-and-down movement structure of the top plate core assembly; each top block is connected with a front-and-rear adjustment element. The top plate core assembly is positioned front and back through the front-and-rear drive unit, and the top plate core assembly is positioned up and down through the up-and-down drive unit so that the top blocks at different positions correspond to workpieces at different heights. The top blocks move back and forth through the front-and-rear adjustment elements to form a positioning and clamping structure for the workpieces, forming a jig structure for superimposed processing workpieces. Therefore, it can solve the problems existing in the existing wire cutting processing jigs, such as long repetitive labor time, high labor intensity, low efficiency, and consumption of working hours and human resources. It has outstanding substantial characteristics and remarkable technical progress, such as short worker labor time, low labor intensity, high efficiency, and saving of working hours and human resources.

[0016] 2. Since the present invention is a superimposed jig structure, multiple workpieces can be clamped and processed at the same time, so it has the characteristics of saving resources and significantly improving production efficiency.

[0017] 3. Since the present invention uses a top plate core assembly to stack and clamp multiple workpieces, and the multiple workpieces are clamped by multiple stacked top blocks installed in a top block core, and the lengths of the multiple top blocks can be ejected by adjusting bolts, it has the characteristics of convenient clamping, high flexibility, and stable reliability.

[0018] 4. Using the present invention to process products can make the processing size deviation of the same batch of products small, the surface of the products is not damaged, and zero defects are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of Specific Embodiment 1 of the present invention.

[0020] Figure 2 is Figure 1 the bottom view structural diagram.

[0021] Figure 3-1 is a schematic structural diagram of the front and rear drive units of Specific Embodiment 1 of the present invention.

[0022] Figure 3-2 is an exploded view of the front and rear drive units of Specific Embodiment 1 of the present invention.

[0023] Figure 4 is a schematic partial structural diagram of Specific Embodiment 1 of the present invention.

[0024] Figure 5-1 is a schematic structural diagram of the upper and lower drive units of Specific Embodiment 1 of the present invention.

[0025] Figure 5-2 is an exploded view of the upper and lower drive units of Specific Embodiment 1 of the present invention.

[0026] Figure 6 is a schematic exploded structural diagram of Specific Embodiment 1 of the present invention.

[0027] Figure 7 is a schematic partial structural diagram of the present invention in the use state. DETAILED DESCRIPTION OF THE EMBODIMENTS Specific Embodiment 1:

[0029] Figures 1-6 constitutes Specific Embodiment 1 of the present invention.

[0030] Refer to Figures 1-6, the overall structure of this embodiment includes a wire cutting machine workbench 32, a right-angle support base 29 and a bottom plate 31 disposed on the wire cutting machine workbench 32. The main structure of this embodiment includes an up-and-down drive unit 1, a front-and-rear drive unit 25 and a top plate core assembly. The top plate core assembly is movably connected to the bottom plate 31. The top plate core assembly has a number of top blocks, and the number of top blocks is combined in multiple layers and multiple columns to form a stacked structure; the front-and-rear drive wheels 25 are disposed at the rear end of the top plate core assembly to drive the top plate core assembly to move back and forth, constituting the front-and-rear movement structure of the top plate core assembly; the up-and-down drive unit 1 is disposed at the top end of the top plate core assembly to drive the top plate core assembly to move up and down, constituting the up-and-down movement structure of the top plate core assembly; each top block is connected with a front-and-rear adjustment element. The top plate core assembly is positioned front and back by the front-and-rear drive unit 25, and the top plate core assembly is positioned up and down by the up-and-down drive unit 1 so that the top blocks at different positions correspond to workpieces at different heights. The top blocks are moved back and forth by the front-and-rear adjustment elements to form a positioning and clamping structure for the workpieces; a fixture structure for stacking and processing workpieces is formed.

[0031] In this embodiment:

[0032] Further, the top plate core assembly includes a top block core 16, a left side plate 15-1, a right side plate 15-2, a top block core bottom plate 17, an upper plate 5, a rear top plate 12 and a number of top blocks 12. The number of top blocks 12 is movably built in the top block core 16 and is combined in multiple layers and multiple columns to form a stacked movable pressing structure; the left side of the top block core 16 is movably connected to the left side plate 15-1, and the right side is movably connected to the right side plate 15-2 to form an up-and-down sliding connection structure of the top block core 16; the top block core bottom plate 17 is connected to the bottom plate 31 by bolts and forms a front-and-rear position adjustment structure through the strip-shaped through holes in the bottom plate 31; the drive output end of the up-and-down drive unit 1 passes through the upper plate 5 and is connected to the top end of the top block core 16 to form an up-and-down movement drive structure; the drive output end of the front-and-rear drive unit 25 is connected to the top block core bottom plate 17 to form a front-and-rear movement drive structure.

[0033] Further, the up-and-down drive unit 1 is a manual drive structure, including an up-and-down handwheel 1-1, an up-and-down lead screw 2 and a lead screw base 10. The power output end of the up-and-down handwheel 1-1 is connected to the top end of the up-and-down lead screw 2. The bottom end of the up-and-down lead screw 2 passes through the upper plate 5 and is connected to the lead screw base 10. The lead screw base 10 is fixedly connected to the top of the top block core 16 to form a front-and-rear movement drive structure for the top plate core assembly.

[0034] Further, a concave position is provided on the top surface of the top block core 16 for placing the lead screw base 10. The lead screw base 10 is fixedly connected to the top block core 16 by a pin 7; a flange 9 is provided at the connection between the lead screw base 10 and the top block core 16, and the flange 9 is fixedly connected to the top block core 16 by an internal hexagonal bolt 8; a copper round flange 4 is provided at the connection between the up-and-down lead screw 2 and the upper plate 5.

[0035] Further, the front and rear drive units 25 are manually driven structures, including front and rear handwheels 25-1, front and rear lead screws 21, and nut seats 19. The power output end of the front and rear handwheels 25-1 is connected to the rear end of the front and rear lead screws 21. The front end of the front and rear lead screws 21 passes through the lead screw fixing seat 23 and is connected to the nut seat 19. The lead screw fixing seat 23 is fixedly connected in the middle groove 31-1 of the bottom plate 31. The nut seat 19 passes through the middle groove 31-1 of the bottom plate 31 and is fixedly connected to the bottom surface of the top block core bottom plate 17. The middle groove 31-1 is a through-type strip groove, forming an up-and-down movement drive structure for the top block core 16.

[0036] Further, the lead screw fixing seat 23 is fixedly connected in the middle groove 31-1 of the bottom plate 31 by an internal hexagonal bolt 26. The front and rear lead screws 21 are connected to the lead screw fixing seat 23 through bearings 22 and are connected to the front and rear handwheels 25-1 through nuts 24. The nut seat 19 is fixedly connected to the bottom surface of the top block core bottom plate 17 by an internal hexagonal bolt 20.

[0037] Further, side grooves 31-2 are provided on both sides of the middle groove 31-1 of the bottom plate 31. The side grooves 31-2 are through-type strip grooves. The top block core bottom plate 17 is connected to the bottom plate 31 by bolts 18, forming a front and rear position adjustable connection structure.

[0038] Refer to Figure 7 , the connection relationship of this embodiment is as follows: First, connect the right-angle support seat 29 and the bottom plate 31 to the workbench surface 32 of the wire cutting machine 35 with internal hexagonal bolts 30. Then, with the top block core 16 as the connection core, insert the top block 11 made of brass into the top block core hole, assemble the top plate on the top block core 16 with bolts 13, and screw on the adjusting bolt 14. Fasten the left side plate 15-1 and the right side plate 15-2 of the top block core on the side of the top block core. Fasten the top plate of the top block core 5 on the top of the top block core, and fasten the bottom plate of the top block core 17 on the bottom of the top block core with bolts to form a component. Finally, assemble the component on the bottom plate 17 with fixing bolts 27, and finally install the front and rear drive units and the up and down drive units according to FIGS. 3 and 5.

[0039] Refer to Figure 7 , the working principle of this embodiment is as follows: Rotate the handwheel 25-1 of the drive unit 25 to move the top block core assembly forward and backward, and tighten the fixing bolt 27 to lock the forward and backward movement of the top block core assembly. Rotate the handwheel 1-1 of the up and down drive unit 1 to move the top block core up and down, and tighten the set bolts on the side plates of the top block core to lock the up and down movement of the top block core. Then adjust the adjusting bolt to push out the brass top block 11, which abuts the stacked workpieces 34 at different heights, and then perform wire cutting on the local part of the workpieces 34.

[0040] The above are the preferred embodiments of the present invention. Those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the above specific embodiments, and any obvious improvements, substitutions, or variations made by those skilled in the art based on the present invention fall within the protection scope of the present invention.

Claims

1. A fixture structure for stacking workpieces, comprising a wire cutting machine workbench (32) and a right-angle support seat (29) and a bottom plate (31) arranged on the wire cutting machine workbench (32), Features: The utility model also comprises an up-down driving unit 1, a front-back driving unit (25) and a top plate core assembly, wherein the top plate core assembly is movably connected to the bottom plate (31), and the top plate core assembly has a plurality of top blocks, wherein the plurality of top blocks are combined in a multi-layer and multi-row manner to form a stacked structure; the front-back driving wheels (25) are arranged at the rear end of the top plate core assembly to drive the top plate core assembly to move forward and backward, thereby forming a top plate core assembly front-back movement structure; the up-down driving unit 1 is arranged at the top end of the top plate core assembly to drive the top plate core assembly to move up and down, thereby forming a top plate core assembly up and down movement structure; each top block is connected to a front-back adjustment element, and the top plate core assembly is positioned forward and backward by the front-back driving unit 25, and the top plate core assembly is positioned up and down by the up-down driving unit (1) so that top blocks at different positions correspond to workpieces of different heights, and the top blocks are moved forward and backward by the front-back adjustment element to form a positioning and clamping structure for the workpiece; thus, a fixture structure for processing the workpiece in a stacked manner is formed.

2. A fixture structure for stacking workpieces according to claim 1, Features: The top plate core assembly comprises a top block core (16), a left side plate (15-1), a right side plate (15-2), a top block core bottom plate (17), an upper plate (5), a rear top plate (12) and a plurality of top blocks (12), wherein the plurality of top blocks (12) are movably built into the top block core (16) and are combined in multiple layers and multiple columns to form a stacked movable top tightening structure; the left side of the top block core (16) is movably connected to the left side plate (15-1), and the right side is movably connected to the right side plate (15-2), to form an up-and-down sliding connection structure of the top block core (16); the top block core bottom plate (17) is connected to the bottom plate (31) by bolts and forms a front-and-back position adjustment structure through strip-shaped through holes in the bottom plate 31; the driving output end of the up-and-down driving unit 1 passes through the upper plate (5) to connect to the top end of the top block core (16) to form an up-and-down motion driving structure; the driving output end of the front-and-back driving unit 25 is connected to the top block core bottom plate (17) to form a front-and-back motion driving structure.

3. A fixture structure for stacking workpieces according to claim 2, Features: The upper and lower drive units (1) are manual drive structures, comprising upper and lower hand wheels (1-1), upper and lower screw rods (2) and screw rod bases (10); the power output ends of the upper and lower hand wheels (1-1) are connected to the top ends of the upper and lower screw rods (2); the bottom ends of the upper and lower screw rods (2) pass through the upper plate (5) and are connected to the screw rod bases (10); the screw rod bases (10) are fixedly connected to the top of the top block core (16), forming a forward and backward movement drive structure for the top plate core assembly.

4. A fixture structure for stacking workpieces according to claim 3, Features: The top surface of the top block core (16) is provided with a recessed position for placing a screw base (10), and the screw base (10) is fixedly connected to the top block core (16) via a latch 7; a flange (9) is provided at the connection between the screw base (10) and the top block core (16), and the flange (9) is fixedly connected to the top block core (16) via a hexagon socket bolt (8); and a copper round flange (4) is provided at the connection between the upper and lower screws (2) and the upper plate (5).

5. A fixture structure for stacking workpieces according to claim 2, Features: The front and rear drive unit (25) is a manual drive structure, comprising a front and rear hand wheel (25-1), a front and rear screw rod (21) and a nut seat (19); the power output end of the front and rear hand wheel (25-1) is connected to the rear end of the front and rear screw rod (21); the front end of the front and rear screw rod (21) passes through a screw rod fixing seat (23) and is connected to the nut seat (19); the screw rod fixing seat (23) is fixedly connected to the middle groove (31-1) of the bottom plate (31); the nut seat (19) passes through the middle groove (31-1) of the bottom plate (31) and is fixedly connected to the bottom surface of the top block core bottom plate (17); the middle groove (31-1) is a transparent strip groove; a driving structure for the top block core (16) to move up and down is formed.

6. A fixture structure for stacking workpieces according to claim 5, Features: The screw rod fixing seat (23) is fixedly connected to the middle groove (31-1) of the bottom plate (31) through the hexagon socket bolt 26; the front and rear screw rods (21) are connected to the screw rod fixing seat (23) through the bearing (22) and are connected to the front and rear hand wheels (25-1) through the nut (24); the nut seat (19) is fixedly connected to the bottom surface of the top block core bottom plate (17) through the hexagon socket bolt (20).

7. A fixture structure for stacking workpieces according to any one of claims 1 to 6, Features: A side groove (31-2) is provided on each side of the middle groove (31-1) of the bottom plate (31), and the side groove (31-2) is a transparent strip groove. The top block core bottom plate (17) is connected to the bottom plate (31) by bolts (18) to form a front-to-back position adjustable connection structure.

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