Pressing and holding tool for low working space

Abstract

The utility model discloses a hold-down tool for a low working space, which comprises a base plate and at least one hold-down assembly, the base plate is provided with a hold-down surface for placing a workpiece, one end of the hold-down assembly is suspended on the hold-down surface and tightly presses the workpiece on the hold-down surface, the base plate is provided with a plurality of vertical mounting holes, and the mounting holes are arranged on the base plate. A plurality of mounting holes are formed in the pressing and holding surface, the pressing and holding assembly is of an L-shaped structure, the bottom of the pressing and holding assembly is connected with the mounting holes in a clamped mode, and one end of the pressing and holding assembly is tightly pressed on a workpiece. The pressing and holding assembly can be installed according to the size of a workpiece and matched with the pressing and holding assembly to press and hold the workpiece, meanwhile, the equipment clearance requirement is met, the pressing and holding assembly is fast to disassemble and assemble, the universality for small workpieces is high, the requirement for clamping operation of the workpiece in a low working space can be met, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece clamps, and more specifically, to a pressing tool used in a low working space. Background Art

[0002] In the production process of precision electronic devices, multiple workpieces are combined and compounded. In addition to limiting the workpieces to be processed by tools such as fixtures, positioning blocks, and pressure plates, they also need to be clamped and fixed on the workbench. For scenes such as laser processing and local precision machining, the processing clamping force requirements are not large, but the working space between the equipment and the workpiece is generally low in height and has high requirements for avoiding air. Commonly used clamping methods such as thread tightening, cylinder drive, press buckle, and buckle have large structural volumes and cannot be used in smaller working spaces. The equipment needs to avoid air by adjusting the processing path, which reduces production efficiency, and the loading and unloading structure is complex and has poor versatility.

[0003] CN110962089B discloses a circuit board processing clamping platform, comprising a processing platform, a clamping area is arranged in the middle of the processing platform, a positioning hole penetrating the processing platform is provided in the clamping area, a clamping unit is plugged into the positioning hole, an X slide groove and a Y slide groove penetrating the processing platform are respectively provided in the clamping area, the X slide groove and the Y slide groove are both equipped with symmetrically distributed sliding blocks, wherein an X extrusion guide rail is fixedly installed on the sliding block of the X slide groove, a Y extrusion guide rail is fixedly installed on the sliding block of the Y slide groove, an X sliding sleeve is slidably connected with the X extrusion guide rail, and a symmetrically distributed Y sliding sleeve is installed on the Y extrusion guide rail, wherein the clamping unit is engaged with the X sliding sleeve / Y sliding sleeve; the clamping unit of the invention is plugged into the peripheral side of the circuit board according to the actual model and size of the actual circuit board, and then correspondingly clamped by the X sliding sleeve / Y sliding sleeve, so that the invention is suitable for production and fixation of circuit boards of different models, but the structure of the invention is complex and it is difficult to meet the clamping operation of workpieces with low working space. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a holding tool for a low working space, which can clamp the workpiece according to the size of the workpiece through one or more holding components detachably connected to the clamping surface, and at the same time meet the air avoidance requirements of the processing equipment. The holding components are quick to disassemble and assemble, which is convenient for batch operations of workpieces. It is suitable for clamping operations in a low working space and improves the efficiency of workpiece processing.

[0005] To achieve the above-mentioned purpose, the present technical solution is a holding tool for a low working space, comprising a base plate and at least one holding assembly, wherein the base plate has a holding surface for placing a workpiece, one end of the holding assembly is suspended from the holding surface and presses the workpiece on the holding surface, the base plate is provided with a plurality of vertical mounting holes, and the plurality of mounting holes are arranged in an array on the holding surface, the holding assembly is an L-shaped structure, the bottom of the holding assembly is engaged with the mounting hole, and one end of the holding assembly is pressed on the workpiece.

[0006] In this technical solution, technicians perform laser processing, welding or local precision machining on workpieces. However, in this scenario, the workspace is generally low in height. The technicians need to place the workpiece on the holding surface of the substrate, select an appropriate number of holding components according to the size of the workpiece, and install one end of the holding component on the holding surface. The other end of the holding component presses the workpiece. Since the substrate and the holding structure are simple and small in size, the need to avoid air can be met when the equipment processes the workpiece. After the workpiece is processed, the workpiece can be removed by disassembling the holding component. In order to meet the needs of various processes, The installation requirements of the size of the parts are met. When the workpiece is pressed and held, the bottom of the pressing and holding assembly extends into the mounting hole, and the other end of the pressing and holding assembly suspended on the pressing and holding surface is pressed against the workpiece, and the workpiece generates a reaction force for the pressing and holding assembly to make the pressing and holding assembly have a tendency to flip. Since the bottom of the pressing and holding assembly is inserted into the mounting hole, the mounting hole generates a reaction force on the bottom of the pressing and holding assembly to clamp the pressing and holding assembly, thereby realizing the rapid installation of the pressing and holding assembly. When the pressing and holding assembly needs to be disassembled, a force in the opposite direction to the above-mentioned flipping tendency is provided to the pressing and holding assembly and the assembly is pulled out, thereby realizing the rapid disassembly of the pressing and holding assembly.

[0007] As a preferred scheme, the pressing and holding assembly includes a support rod, a connecting block and a pressure bar, the support rod is fixed to the bottom of the connecting block, one end of the pressure bar is connected to one side of the connecting block, and the other end of the pressure bar is suspended on the outside of the connecting block, and the diameter of the support rod is adapted to the mounting hole. When the other end of the pressure bar presses the workpiece located on the pressing and holding surface, the support rod is engaged with the mounting hole, and the pressure bar and the support rod form an L-shaped structure, and one end of the pressure bar presses the workpiece. Since the pressure bar is small in size and the covering area of ​​the workpiece during the pressing and holding operation is small, the air avoidance requirement can be met. When the technician inserts the support rod into the mounting hole, he applies appropriate pressure to it, causing the pressure bar to produce a certain deformation, and the middle part of the pressure bar arches downward. When the pressure bar recovers its deformation, both ends tend to press downward, so that one end of the pressure bar presses the workpiece, and the other end of the pressure bar is clamped in the mounting hole.

[0008] As a preferred solution, in order to increase the reliability of pressing and holding, an angle A is formed between one end of the pressure bar and the pressing and holding surface, and the angle A is 20° to 70°. According to the material of the pressure bar, one end of the pressure bar is bent to form an angle A. When the pressure bar is in a pressing and holding state, the pressure bar is deformed. The angle A can reduce the contact area when one end of the pressure bar is used to press the workpiece against the surface of the workpiece, thereby achieving air avoidance of the equipment.

[0009] As a preferred solution, the connecting block is provided with a slot, one end of the pressure bar is inserted into the slot and fixed by a fastener, and the pressure bar is connected to the slot by the fastener, so that the pressure bar can be quickly replaced, and pressure bars of different sizes and bending angles can be selected according to the size of the workpiece.

[0010] As a preferred solution, the pressure strip, the support rod and the connecting block are all made of rigid materials, so that the pressing component can be clamped in the mounting hole and simultaneously achieve a pressing effect on the workpiece.

[0011] As a preferred solution, in order to ensure the strength of the pressure bar, support rod and connecting block, the pressure bar is one of titanium alloy, copper alloy, aluminum alloy, stainless steel and white steel, and the support rod and connecting block are one of copper alloy, aluminum alloy, stainless steel and white steel.

[0012] As a preferred solution, the support rod and the connecting block are made of the same material and are both rigid materials, the pressure bar is a torsion spring, both ends of the torsion spring extend to both ends respectively, one end of the torsion spring is connected to one side of the connecting block, and the other end of the torsion spring is suspended on the outside of the connecting block. When the technician presses down the torsion spring, the two ends of the torsion spring are tilted and tend to reset downward, so that one end of the torsion spring presses the workpiece. Since the torsion spring is located on one side of the support rod, the tension force of the other end of the torsion spring when it resets will cause the support rod to flip over, thereby causing the support rod to be clamped in the mounting hole.

[0013] As a preferred solution, in order to facilitate the removal of the pressing assembly, a protrusion is provided on the top of the connecting block, and one end of the protrusion protrudes to the side away from the pressure bar. After processing the workpiece, the technician presses the protrusion and lifts it upward, so that the support rod offsets the flipping tendency, thereby reducing the friction with the inside of the mounting hole, and the pressing assembly can be easily removed.

[0014] As a preferred solution, in order to increase the friction between the surface of the support rod and the inner wall of the mounting hole to ensure that the support rod can be clamped on the mounting hole, the surface of the support rod and the inner wall of the mounting hole are sandblasted.

[0015] As a preferred solution, in order to prevent the pressing and holding assembly from falling out during non-pressing operation, a magnetic component is embedded in the inner wall of the mounting hole, and the support rod is made of magnetic material. The pressing and holding assembly is magnetically connected to the mounting hole to prevent the pressing and holding assembly from falling out due to its own gravity when the substrate is flipped.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model can clamp the bottom of the pressing component in the corresponding mounting hole according to the size of the workpiece. The L-shaped structure of the pressing component enables the reaction force generated by the pressing component when the workpiece is pressed to fix the pressing component, which is quick to install and reliable to clamp.

[0018] 2. The holding component can be taken out by flipping the direction and lifting it up. The disassembly is simple and quick. The workpieces can be operated in batches to improve the processing efficiency.

[0019] 3. The clamping assembly can press the workpiece to meet the air avoidance requirements of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the pressing tool used in a low working space of the utility model;

[0021] Figure 2 is a schematic diagram of the structure of the pressing assembly;

[0022] Figure 3 It is a schematic diagram of the state of the pressing component in the pressing operation;

[0023] Figure 4 It is a structural schematic diagram of Example 2.

[0024] In the figure: base plate 1; holding surface 101; mounting hole 102; support rod 2; connecting block 3; slot 301; protrusion 302; accommodating cavity 303; pressure bar 4; fastener 5; first fixing pin 6; second fixing pin 7; workpiece 8. DETAILED DESCRIPTION

[0025] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0026] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0028] Embodiment 1:

[0029] like Figures 1 to 3 As shown, this embodiment provides a holding tool for a low working space, including a substrate 1 and at least one holding assembly, wherein the substrate 1 has a holding surface 101 for placing a workpiece 8, one end of the holding assembly is suspended from the holding surface 101 and presses the workpiece 8 located on the holding surface 101, a plurality of vertical mounting holes 102 are provided on the substrate 1, and the plurality of mounting holes 102 are arranged in an array on the holding surface 101, the holding assembly is an L-shaped structure, the bottom of the holding assembly is clamped with the mounting hole 102, and one end of the holding assembly is pressed on the workpiece 8.

[0030] In this embodiment, 7*8 mounting holes 102 are vertically provided on the substrate 1, and the mounting holes 102 penetrate the substrate 1. The penetrating mounting holes 102 can discharge the debris left over from processing in time to avoid the accumulation of debris and wear of the workpiece or equipment. The mounting holes 102 cover the pressing surface 101, and the surface of the pressing surface 101 is flat. When the pressing assembly presses the workpiece 8, the back of the workpiece 8 is balanced.

[0031] In this embodiment, when the workpiece 8 requires more holding force during processing, technicians can use four holding components to hold the workpiece 8 downward from the four corners, and the holding components cover a small area of ​​the workpiece 8, which can meet the air avoidance requirements.

[0032] Specifically, the pressing assembly includes a support rod 2, a connecting block 3 and a pressure bar 4, the support rod 2 is fixed to the bottom of the connecting block 3, one end of the pressure bar 4 is connected to one side of the connecting block 3, and the other end of the pressure bar 4 is suspended on the outside of the connecting block 3, the diameter of the support rod 2 is adapted to the mounting hole 102, when the other end of the pressure bar 4 presses the workpiece 8 located on the pressing surface 101, the support rod 2 is clamped with the mounting hole 102, and an angle A is formed between one end of the pressure bar 4 and the pressing surface 101, and the angle A is 20° to 70°.

[0033] In this embodiment, the diameter of the support rod 2 is less than or equal to the inner diameter of the mounting hole 102, the support rod 2 and the mounting hole 102 are clearance fit or transition fit rather than interference fit, the front end of the pressure bar 4 is bent 70°, and an L-shaped structure is formed between the pressure bar 4 and the support rod 2. This structure allows the height of the pressing assembly to be lower after the pressing assembly is inserted into the mounting hole 102, which can meet the equipment processing needs of low working workpieces.

[0034] Specifically, the connection block 3 is provided with a slot 301 , and one end of the pressure bar 4 is inserted into the slot 301 and fixed by a fastener 5 .

[0035] In this embodiment, the tail of the pressure bar is inserted into the slot 301 and fixed by a fastener 5 , and the fastener 5 may be a screw. A threaded hole communicating with the slot 301 is provided on the top of the connection block 3 .

[0036] Specifically, the pressure bar 4 is made of elastic material, and the support rod 2 and the connecting block 3 are made of the same material and are both rigid materials.

[0037] In this embodiment, the elastic force of the elastic material can be used to clamp the support rod 2 made of a rigid material in the mounting hole 102 .

[0038] Specifically, the pressure bar 4 is made of titanium alloy, and the support rod 2 and the connecting block 3 are made of aluminum alloy.

[0039] In this embodiment, the titanium alloy not only has high elasticity, but also has high strength, good corrosion resistance, and high heat resistance. It will not be damaged by long-term close contact with processing equipment. The aluminum alloy has high hardness and is not easy to deform.

[0040] Specifically, a protrusion 302 is provided on the top of the connection block 3 , and one end of the protrusion 302 protrudes toward a side away from the pressure bar 4 .

[0041] In this embodiment, the protrusion 302 is integrally formed with the connection block 3 and is formed by milling the lower right side of the connection block 3. The technician can use the protrusion 302 to better exert force and conveniently remove the pressing component.

[0042] Specifically, the surface of the support rod 2 and the inner wall of the mounting hole 102 are sandblasted.

[0043] In this embodiment, the friction between the surface of the support rod 2 and the inner wall of the mounting hole 102 can be increased by sandblasting.

[0044] In this embodiment, if Figure 3 As shown, the technician inserts the support rod 2 of the pressing assembly into the mounting hole 102 and applies downward pressure to the top of the connecting block 3 again, so that the front end of the pressure bar 4 presses the workpiece 8, and the pressure bar 4 is bent and deformed under the force. Under the reaction force of the pressure bar 4 restoring and deforming, the pressing assembly tends to flip clockwise, so that the upper and lower ends of the support rod 2 located in the mounting hole 102 are respectively pressed against the two sides of the mounting hole 102. Under the action of friction, the pressing assembly is firmly fixed. When the processing is completed, the technician buckles the protrusion 302 and pulls it upward to offset the clockwise flipping trend of the pressing assembly, so as to reduce the force of the two ends of the support rod 2 on the mounting hole 102 and reduce the friction. The pressing assembly can then be easily removed.

[0045] Embodiment 2:

[0046] This embodiment is similar to Embodiment 1, except that, in this embodiment, Figure 4 As shown, specifically, the support rod 2 and the connecting block 3 are made of the same material and are both rigid materials, the pressure bar 4 is a torsion spring, both ends of the torsion spring extend to both ends respectively, one end of the torsion spring is connected to one side of the connecting block 3, and the other end of the torsion spring is suspended on the outside of the connecting block 3.

[0047] In this embodiment, one end of the connecting block 3 is provided with a receiving cavity 303 for receiving the middle part of the torsion spring, one end of the torsion spring is suspended above the holding surface 101, and the other end of the torsion spring is fixed by a first fixing pin 6 and a second fixing pin 7 to prevent rotation.

[0048] Embodiment 3:

[0049] This embodiment is similar to Embodiment 1, except that, in this embodiment, a magnetic attraction member is embedded in the inner wall of the mounting hole 102, and the support rod 2 is made of magnetic attraction material.

[0050] In this embodiment, the magnetic attraction member enables the pressing component to be magnetically connected in the mounting hole 102, thereby preventing the pressing component from loosening and falling off when in a non-pressing state.

[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

[0052] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A holding tool for low working space, characterized in that: The invention comprises a base plate (1) and at least one pressing component, wherein the base plate (1) has a pressing surface (101) for placing a workpiece (8), one end of the pressing component is suspended on the pressing surface (101) and presses the workpiece (8) located on the pressing surface (101), the base plate (1) is provided with a plurality of vertical mounting holes (102), the plurality of mounting holes (102) are arranged in an array on the pressing surface (101), the pressing component is an L-shaped structure, the bottom of the pressing component is snap-fitted with the mounting hole (102), and one end of the pressing component is pressed on the workpiece (8).

2. A holding fixture for low working space according to claim 1, characterized in that: The pressing assembly comprises a support rod (2), a connecting block (3) and a pressure bar (4); the support rod (2) is fixed to the bottom of the connecting block (3); one end of the pressure bar (4) is connected to one side of the connecting block (3); the other end of the pressure bar (4) is suspended outside the connecting block (3); the diameter of the support rod (2) is adapted to the mounting hole (102); when the other end of the pressure bar (4) presses the workpiece (8) located on the pressing surface (101), the support rod (2) is clamped with the mounting hole (102).

3. A holding tool for low working space according to claim 2, characterized in that: An angle A is formed between one end of the pressure strip (4) and the pressing surface (101), and the angle A is 20° to 70°.

4. A holding fixture for low working space according to claim 2, characterized in that: The connection block (3) is provided with a slot (301), and one end of the pressure bar (4) is inserted into the slot (301) and fixed by a fastener (5).

5. A holding fixture for low working space according to any one of claims 2 to 4, characterized in that: The pressure bar (4), the support rod (2) and the connecting block (3) are all made of rigid materials.

6. A holding fixture for low working space according to claim 5, characterized in that: The pressure bar (4) is one of titanium alloy, copper alloy, aluminum alloy, stainless steel and white steel, and the support rod (2) and the connecting block (3) are one of copper alloy, aluminum alloy, stainless steel and white steel.

7. A holding fixture for low working space according to any one of claims 2 to 4, characterized in that: The support rod (2) and the connecting block (3) are made of the same material and are both rigid materials. The pressure bar (4) is a torsion spring. The two ends of the torsion spring extend to two ends respectively. One end of the torsion spring is connected to one side of the connecting block (3), and the other end of the torsion spring is suspended on the outside of the connecting block (3).

8. A holding fixture for low working space according to claim 2, characterized in that: A protrusion (302) is provided on the top of the connection block (3), and one end of the protrusion (302) protrudes toward a side away from the pressure bar (4).

9. A holding tool for low working space according to claim 2, characterized in that: The surface of the support rod (2) and the inner wall of the mounting hole (102) are sandblasted.

10. A holding tool for low working space according to claim 2, characterized in that: A magnetic attraction component is embedded in the inner wall of the mounting hole (102), and the support rod (2) is made of magnetic attraction material.

Images