Clamp for right-angle workpiece machining

Abstract

The utility model provides a clamp for processing a right-angle type workpiece, which comprises one or more clamping units, each clamping unit comprises a fixed pressing block mechanism and a movable pressing block mechanism, the fixed pressing block mechanism and the movable pressing block mechanism respectively comprise a plurality of fixed pressing heads and a plurality of movable pressing heads arranged corresponding to the fixed pressing heads, and a wedge block and a plywood can be tightly pressed along two mutually perpendicular directions. The right-angle workpiece is clamped and fixed through the clamping device, and the relative position of the right-angle workpiece is positioned, so that nailing and other machining are easier to operate, and the finished right-angle workpiece can have better dimensional precision and consistency. Particularly, the fixed pressure heads comprise two fixed pressure heads for alignment, and the height of the pressing surfaces of the two fixed pressure heads for alignment is at least greater than half of the total thickness of the stacked wedge block and plywood, so that the fixed pressure heads can be matched with the corresponding movable pressure heads through the pressing surfaces of the two fixed pressure heads; the two side edges of the plywood are aligned with the two corresponding side edges of the wedge block respectively, and therefore a J-shaped workpiece or an L-shaped workpiece can be machined more conveniently and reliably.

Description

Technical Field

[0001] The utility model belongs to the technical field of workpiece clamps, and in particular relates to a clamp for processing a right-angle workpiece. Background Art

[0002] In a liquefied natural gas (LNG) ship, an insulating box with a complex structure is used to form a silo for storing and keeping liquefied natural gas at a low temperature. The structure of one end of the insulating box 200 is as follows: Figure 11 As shown, two right-angle grooves 210 are formed at one end, and a right-angle workpiece is embedded in each groove 210. When viewed from the outside of one end of the insulation box 200, one of the right-angle workpieces is in a right-angle J shape and the other is in an L shape. Therefore, they are usually referred to as J-shaped workpieces 220J and L-shaped workpieces 220L, respectively. Figure 12 The J-shaped workpiece 220J and the L-shaped workpiece 220L are made of the same two parts, a long square column wedge 221 and a rectangular plywood 222. The only difference is that the J-shaped workpiece 220J and the L-shaped workpiece 220L are mirror-symmetrical structures.

[0003] During the manufacturing of these two workpieces, glue is applied to the corresponding positions of wedge block 221. Then, wedge block 221 and plywood 222 are partially overlapped and fixed relative to each other. Finally, nails are driven into the overlapped portion to form a J-shaped or L-shaped workpiece. Furthermore, the adjacent two sides of plywood 222 must be aligned with the two sides of wedge block 221, and high dimensional accuracy is required for the finished J-shaped or L-shaped workpiece.

[0004] Currently, in the processing of the J-shaped or L-shaped workpiece, the relative positions of the wedge and the plywood are fixed by relatively simple auxiliary tools. For example, two wooden strips are used to press the two sides of the wedge, and the plywood is manually aligned with the two sides of the wedge before nailing. This is inconvenient to operate, has a very low processing efficiency, and is difficult to ensure the dimensional accuracy of the finished J-shaped or L-shaped workpiece. Utility Model Content

[0005] The present invention is designed to solve the above-mentioned problem and aims to provide a clamp capable of clamping and positioning a set of wedges and plywood, thereby making nailing and other processing operations on right-angled panels more convenient and achieving higher finished product precision. The present invention adopts the following technical solutions:

[0006] The utility model provides a fixture for processing right-angle workpieces, which is used to process square column-shaped wedge blocks and rectangular plate-shaped plywood into right-angled workpieces. The fixture has the following technical features: it comprises: one or more clamping units, wherein the clamping units comprise: a fixed pressure block mechanism, comprising a plurality of fixed pressure heads; a movable pressure block mechanism, comprising a plurality of movable pressure heads, which respectively correspond to the fixed pressure heads and can move relative to the corresponding fixed pressure heads, thereby cooperating with the corresponding fixed pressure heads to press the wedge block and the plywood along two horizontal directions perpendicular to each other to fix their relative positions, the plurality of fixed pressure heads comprise two alignment fixed pressure heads, each of which has a pressing surface, the height of the two alignment fixed pressure heads being at least greater than half of the total thickness of the stacked wedge blocks and the plywood, the two pressing surfaces being respectively perpendicular to the two horizontal directions, and being used to align the corresponding two side edges of the wedge block and the plywood.

[0007] The right-angle workpiece processing fixture provided by the present invention can also have such technical features, wherein the fixed pressure block mechanism also includes an L-shaped fixed frame, the fixed pressure heads are all fixed on the inner side of the fixed frame, the two horizontal directions are respectively the x-axis direction and the y-axis direction, the two alignment fixed pressure heads are respectively the X-axis alignment fixed pressure head and the Y-axis alignment fixed pressure head, and their pressing surfaces are respectively perpendicular to the x-axis direction and the y-axis direction, and the multiple fixed pressure heads also include an X-axis wedge fixed pressure head, whose pressing surface is perpendicular to the x-axis direction, and the multiple movable pressure heads include: an X-axis wedge movable pressure head, which can be moved along the x-axis direction, and its pressing surface is correspondingly arranged opposite to the pressing surface of the X-axis wedge fixed pressure head in the x-axis direction; a Y-axis wedge movable pressure head, which can be moved along the y-axis direction, and its pressing surface is opposite to the pressing surface of the Y-axis alignment fixed pressure head in the y-axis direction. and a plurality of pressing surfaces of the fixed pressure head for alignment in the X-axis direction, the fixed pressure head for alignment in the Y-axis direction, the X-plate movable pressure head being movable along the X-axis direction, the pressing surface thereof being correspondingly arranged opposite to the pressing surface of the fixed pressure head for alignment in the Y-axis direction, and the pressing surfaces being correspondingly arranged opposite to each other in the Y-axis direction, and the pressing surfaces are all planes, and a wedge placement portion corresponding to the shape of the wedge is formed between the plurality of pressing surfaces of the fixed pressure head for alignment in the X-axis direction, the fixed pressure head for alignment in the Y-axis direction, the fixed pressure head for alignment in the Y-axis direction, the X-wedge fixed pressure head, the Y-wedge movable pressure head, the first X-wedge movable pressure head and the second X-wedge movable pressure head, and a plywood placement portion corresponding to the shape of the plywood is formed between the plurality of pressing surfaces of the fixed pressure head for alignment in the X-axis direction, the fixed pressure head for alignment in the Y-axis direction, the X-plate movable pressure head and the Y-plate movable pressure head.

[0008] The clamp for processing right-angle workpieces provided by the utility model may also have such technical features, wherein the movable clamping mechanism includes: a first movable component, including a first X-axis cylinder, and the X-axis plate movable pressure head arranged on the end of the piston rod of the first X-axis cylinder; a second movable component, including a guide rail extending along the x-axis direction, a slide component arranged on the guide rail, a slide driving cylinder for driving the slide component to move, the X-axis wedge movable pressure head arranged on one side of the upper end of the slide component, a second Y-axis cylinder arranged on the upper end of the slide component, and the Y-axis plate movable pressure head arranged on the end of the piston rod of the second Y-axis cylinder; and a third movable component, including a third Y-axis cylinder, a mounting plate arranged on the end of the piston rod of the third Y-axis cylinder, and the Y-axis wedge movable pressure head arranged on the mounting plate.

[0009] The fixture for processing right-angle workpieces provided by the present invention may also have such technical features, wherein the clamping unit also includes a base and a loading frame arranged on the base, the loading frame includes a loading plate spaced apart from the base, the first X-axis cylinder is fixed on the upper surface of the loading plate, the third Y-axis cylinder is fixed on the lower surface of the loading plate, the loading plate is provided with a clearance hole, the upper end of the slide component passes through the clearance hole, the second Y-axis cylinder, the Y-axis plate movable pressure head, and the X-axis wedge block movable pressure head are all located above the loading plate.

[0010] The right-angle workpiece processing fixture provided by the utility model can also have such technical features, and also includes: an electronic control unit, including a sensor assembly and a relay assembly, wherein the loading plate is also provided with a sensor hole, and a sensor mounting hole is provided on one end of the Y-direction alignment fixed pressure head, the sensor assembly includes a wedge detection sensor and a plywood detection sensor, the wedge detection sensor is fixed under the loading plate, and its detection end is arranged in the sensor hole and faces the wedge placement part, for detecting whether the wedge is placed in the wedge placement part, the plywood detection sensor is fixed on the Y-direction alignment fixed pressure head, and its detection end is arranged in the sensor mounting hole and faces the plywood placement part, for detecting whether the wedge is placed in the plywood placement part, and the relay assembly includes multiple relays, which are respectively used to control the slide drive cylinder, the first X-direction cylinder, the second Y-direction cylinder, and the third Y-direction cylinder.

[0011] The right-angle workpiece processing fixture provided by the present invention can also have such technical features, wherein the telescopic end of the piston rod of the first X-direction cylinder and the telescopic end of the piston rod of the second Y-direction cylinder are respectively covered with sheet-like cylinder protection parts, and the fixed pressure head, the movable pressure head, and the cylinder protection part are all stainless steel parts.

[0012] The fixture for processing right-angled workpieces provided by the present invention may also have such technical features, wherein the clamping units are two adjacent ones, and the two clamping units are in a mirror-symmetrical structure along the midline of their arrangement direction, and are respectively used for processing a J-shaped workpiece in a right-angle J shape and an L-shaped workpiece in an L shape.

[0013] The fixture for processing right-angle workpieces provided by the utility model may also have such technical features, wherein the guide rails of the two clamping units are unified guide rails, a slide limiting component is provided between the slide components of the two clamping units, for limiting the relative distance between the two slide components, the third Y-axis cylinders of the two clamping units are the same cylinder, the two mounting plates are an integral plate, and the Y-axis wedge movable pressure heads of the two clamping units are respectively fixed at both ends of the plate.

[0014] The right-angle workpiece processing fixture provided by the present invention may also have such technical features, and also includes: a nailing auxiliary unit, used to cooperate with the nail gun to perform nailing on the overlapping part of the wedge block and the plywood, wherein the nailing auxiliary unit includes: a flipping drive cylinder; a flipping arm, which is connected to the flipping drive cylinder through a corresponding transmission assembly and can be flipped relative to the plywood placement part; and two nailing positioning auxiliary parts, which are respectively arranged on the outer end parts of the flipping arms and respectively correspond to the plywood placement parts of the two clamping units, and the nailing positioning auxiliary parts have one or more nailing positioning holes, and the nailing positioning holes have a gradually smaller aperture from one surface of the nailing positioning auxiliary part to the other surface.

[0015] The right-angle workpiece processing fixture provided by the present invention may also have such technical features, wherein the transmission assembly includes: an adapter, which is arranged on the piston rod of the flip drive cylinder; a rotating shaft, which is arranged on the adapter; a flip bracket, which is closer to the plywood placement part relative to the flip drive cylinder, and has a flip support rod for providing a rotation fulcrum; a flip limiter, which is closer to the plywood placement part relative to the flip bracket, and is used to abut against the flip arm to limit its flip angle, wherein the flip arm is T-shaped, the bottom end of the T is connected to the rotating shaft, and the nailing positioning auxiliary parts are respectively provided at both ends of the upper horizontal bar of the T.

[0016] Function and effect of utility model

[0017] The fixture for processing right-angled workpieces according to the present invention includes one or more clamping units, each of which includes a fixed pressure block mechanism and a movable pressure block mechanism, each of which includes multiple fixed pressure heads and multiple corresponding movable pressure heads. These clamping units can compress the wedge block and plywood in two mutually perpendicular directions, thereby clamping and fixing them and positioning them relative to each other, making nailing and other processing operations easier to operate, and the finished right-angled workpiece can have better dimensional accuracy and consistency. In particular, the fixed pressure heads include two fixed pressure heads for alignment, and the height of the pressing surfaces of the two fixed pressure heads for alignment is at least greater than half the total thickness of the stacked wedge block and plywood. Therefore, the two pressing surfaces can cooperate with the corresponding movable pressure heads to align the two sides of the plywood with the corresponding two sides of the wedge block, thereby more conveniently and reliably processing J-shaped or L-shaped workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram of a right-angle workpiece processing fixture according to an embodiment of the present utility model;

[0019] Figure 2 This is a side view of the structure of a fixture for processing a right-angle workpiece according to an embodiment of the present invention;

[0020] Figure 3 This is a perspective view of the structure of a fixture for processing a right-angle workpiece according to an embodiment of the present invention;

[0021] Figure 4 This is a top view of the structure of the fixture for processing a right-angle workpiece in an embodiment of the present utility model;

[0022] Figure 5 This is a three-dimensional diagram of the X-direction wedge fixing pressure head in the embodiment of the present utility model;

[0023] Figure 6 This is a three-dimensional diagram of a fixed pressure head for Y-direction alignment in an embodiment of the present utility model;

[0024] Figure 7 This is a three-dimensional diagram of a nail positioning auxiliary member in an embodiment of the present utility model;

[0025] Figure 8 This is a schematic diagram of the use state of the structure of the right-angle workpiece processing fixture in the embodiment of the present utility model;

[0026] Figure 9 This is a schematic diagram of the use state of the right-angle workpiece processing fixture in the embodiment of the present utility model;

[0027] Figure 10 This is a flow chart of processing a right-angle workpiece using the above-mentioned right-angle workpiece processing fixture and nail gun in an embodiment of the present utility model;

[0028] Figure 11 It is a structural diagram of one end of an insulating box in the prior art;

[0029] Figure 12 It is a schematic structural diagram of a J-shaped workpiece and an L-shaped workpiece in the prior art.

[0030] Reference numerals:

[0031] Right-angle workpiece machining fixture 100; L-shaped clamping unit 10; carrier 11; column 111; carrier plate 112; clearance hole 112a; sensor hole 112b; limiting notch 112c; fixed pressing mechanism 12; fixed frame 121; X-axis wedge fixed pressure head 122; pressing surface 122a; X-axis alignment fixed pressure head 123; pressing surface 123a; Y-axis alignment fixed pressure head 124; pressing surface 124a; sensor mounting Hole 124b; movable pressing mechanism 13; first movable assembly 131; first X-direction cylinder 1311; X-direction plate movable pressure head 1312; cylinder protection member 1313; second movable assembly 132; guide rail 1321; slide member 1322; slide drive cylinder 1323; first X-direction wedge movable pressure head 1324; second X-direction wedge movable pressure head 1325; second Y-direction cylinder 1326; cylinder protection member 1327; Y-direction plate movable pressure head 1 328; third movable assembly 133; third Y-axis cylinder 1331; mounting plate 1332; Y-axis wedge movable pressure head 1333; Y-axis pressing stopper 1334; wedge placement portion 134; plywood placement portion 135; J-shaped clamping unit 20; mounting frame 21; fixed pressing mechanism 22; movable pressing mechanism 23; base 30; base plate 31; positioning hole 311; pull ring 32; nailing auxiliary unit 40; flip drive cylinder 41; transmission Movable assembly 42; adapter 421; rotating shaft 422; flip bracket 423; flip limiter 424; flip arm 43; nail positioning auxiliary member 44; nail positioning hole 441; buffer layer 442; electronic control unit 50; J-type sensor assembly 51; L-type sensor assembly 52; relay assembly 53; center line A1; insulation box 200; groove 210; J-shaped workpiece 220J; L-shaped workpiece 220L; wedge 221; plywood 222. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the following is a detailed description of the L-shaped workpiece nailing fixture of the present invention in conjunction with the embodiments and drawings.

[0033] <Example>

[0034] This embodiment provides a right-angle workpiece processing fixture for cooperating with a processing tool to process a wedge block 221 and a plywood 222 into a right-angle workpiece (ie, a J-shaped workpiece 220J or an L-shaped workpiece 220L).

[0035] In this embodiment, the J-shaped workpiece 220J or L-shaped workpiece 220L has a nominal length of 85mm to 95mm, a width of 70mm to 80mm, and a thickness of 8mm to 10mm. The nominal width of the end face of the insulating box 200 to which it is adapted is 970mm to 990mm. Therefore, the dimensions of a right-angled workpiece are relatively small.

[0036] Figure 1 1 is a perspective view of a right-angle workpiece processing fixture in this embodiment. Figure 2 1 is a side view of the structure of the fixture for processing a right-angle workpiece in this embodiment. Figure 3 1 is a perspective view of the structure of the fixture for processing a right-angle workpiece in this embodiment. Figure 4 It is a top view of the partial structure of the fixture for processing right-angle workpieces in this embodiment.

[0037] like Figures 1 to 4 As shown, a jig 100 for processing a right-angled plate (hereinafter referred to as jig 100 ) includes a base 30 , an L-shaped clamping unit 10 , a J-shaped clamping unit 20 , a nailing auxiliary unit 40 , and an electric control unit 50 .

[0038] The base 30 includes a base plate 31 with multiple through holes and four pull rings 32 arranged at its four corners. The through holes on the base plate 31 include multiple mounting holes and one or more positioning holes 311. The positioning holes 311 are used to cooperate with the corresponding pinning mechanism so that the base 30 and the workpiece thereon can be positioned to the specified position corresponding to the nail gun.

[0039] The L-shaped clamping unit 10 and the J-shaped clamping unit 20 are used to clamp and position a set of wedge blocks 221 and plywood 222 respectively, so as to form an L-shaped workpiece 220L and a J-shaped workpiece 220J.

[0040] The L-shaped clamping unit 10 includes a mounting frame 11 , a fixed clamping mechanism 12 , and a movable clamping mechanism 13 .

[0041] The mounting frame 11 includes multiple columns 111 and a mounting plate 112. The columns 111 are mounted parallel to each other between the base plate 31 and the mounting plate 112. At least the top surface of the mounting plate 112 is flat, with a central opening 112a with a rounded rectangular cross-section. A smaller sensor hole 112b with a circular cross-section is located to one side of the opening 112a. A square retaining notch 112c is defined along one side of the first mounting plate 112's width.

[0042] The fixed pressure block mechanism 12 has multiple fixed pressure blocks, and the movable pressure block mechanism 13 has multiple movable pressure blocks. These fixed pressure blocks cooperate with the corresponding movable pressure blocks to simultaneously press a wedge block 221 and a plywood 222 used to assemble a J-shaped workpiece 220J along two mutually perpendicular horizontal directions (i.e., the x-axis direction and the y-axis direction in the figure), thereby fixing their relative positions.

[0043] The fixed pressing block mechanism 12 includes a fixed frame 121 , an X-direction wedge fixed pressing head 122 , an X-direction alignment fixed pressing head 123 , and a Y-direction alignment fixed pressing head 124 .

[0044] The fixing frame 121 is L-shaped, and the three pressing heads are fixedly mounted on the inner side of the fixing frame 121. The X-direction wedge fixing head 122 is located at the outer end of the long side of the fixing frame 121, the X-direction alignment fixing head 123 is located at the other end of the long side of the fixing frame 121 (i.e., where the long and short sides of the fixing frame 121 meet), and the Y-direction alignment fixing head 124 is located at the outer end of the short side of the fixing frame 121.

[0045] Figure 5 It is a three-dimensional diagram of the X-direction wedge fixing pressure head in this embodiment.

[0046] like Figure 5 As shown, the X-direction wedge fixed pressure head 122 is located at the outer end of the long side of the L-shaped shape, and is in the shape of a rectangular block as a whole, and has a pressing surface 122a, which is a plane perpendicular to the x-axis direction. The pressure head also has a plurality of through holes, one end of which is located on the pressing surface 122a. Some of the through holes are countersunk holes for fitting screws to fix the pressure head to the fixing frame 121, and other through holes are used to reduce the weight of the pressure head. The height of the pressing surface 122a (the height in the z-axis direction in the figure) is at least greater than half the height (thickness) of the wedge block, and is preferably 70% to 95% of the height of the wedge block.

[0047] The structure of the X-direction alignment fixed pressure head 123 is similar to that of the X-direction wedge fixed pressure head 122, the difference being that the X-direction alignment fixed pressure head 123 is higher, and its height is at least greater than half of the total thickness of the wedge and the plywood when stacked, preferably 70% to 95% of the total thickness.

[0048] Figure 6 It is a three-dimensional diagram of the fixed pressure head for Y-direction alignment in this embodiment.

[0049] like Figure 6As shown, the fixed pressure head 124 for Y-direction alignment is in the shape of a long strip as a whole. One end has a relatively larger size and is provided with a hole 124b for a sensor. The middle part and the other end are in the shape of a cuboid, and the structure is similar to that of the fixed pressure head 122 for X-direction wedge. This pressure head also has a pressing surface 124a, which is a plane perpendicular to the y-axis direction.

[0050] Except for the fixed pressure head for alignment, the structures of the following multiple pressure heads are basically the same as that of the fixed pressure head 122 for X-direction wedge, and will not be repeated.

[0051] The movable block mechanism 13 includes a first movable component 131, a second movable component 132, and a third movable component 133.

[0052] The first movable component 131 is used to cooperate with the fixed pressure head 123 for X-direction alignment and the fixed pressure head 124 for Y-direction alignment to clamp and position the plywood 222 in the x-axis direction. The first movable component 131 includes a first X-direction cylinder 1311, an X-direction plate movable pressure head 1312, and a first cylinder protection part 1313.

[0053] Among them, the first X-direction cylinder 1311 is installed on the upper surface of the first placement rack 11, and its piston rod can extend and retract along the x-axis direction.

[0054] The structure of the X-direction plate movable pressure head 1312 is similar to that of the fixed pressure head 122 for X-direction wedge, and also has a pressing surface perpendicular to the x-axis direction. The X-direction plate movable pressure head 1312 is fixed on the piston rod of the first X-direction cylinder 1311 through a corresponding mounting plate.

[0055] The first cylinder protection part 1313 is a metal sheet part generally in the shape of a "U". The middle part is fixed on the mounting plate and generally covers one end where the piston rod of the first X-direction cylinder 1311 extends and retracts. The middle part of the first cylinder protection part 1313 has a square notch. It plays a role in protecting the moving parts of the cylinder, preventing adhesives such as glue used in processing from sticking to the piston rod of the cylinder and affecting its expansion and contraction. In this embodiment, the first cylinder protection part 1313 is made of stainless steel.

[0056] The second movable component 132 is used to cooperate with the fixed pressure head 122 for X-direction wedge to clamp and position the wedge 221 in the x-axis direction. The second movable component 132 includes two guide rails 1321, a slide table component 1322, a slide table driving cylinder 1323, an X-direction wedge movable pressure head 1324, a second Y-direction cylinder 1325, a second cylinder protection part 1326, and a Y-direction plate movable pressure head 1327.

[0057] The two guide rails 1321 are arranged in parallel on the base flat plate 31.

[0058] The slide member 1322 is movably engaged with the two guide rails 1321. The slide member 1322 is generally in the shape of an I-shape, and its upper end passes through the clearance hole 112a on the carrier plate 112. The upper surface of the slide member 1322 is located above the carrier plate 112.

[0059] The slide drive cylinder 1323 is set on the base plate 31 and is located next to one end of the two guide rails 1321. The piston rod of the cylinder is connected to the lower part of the slide component 1322 through a joint component to drive the slide component 1322 to move along the guide rail 1321.

[0060] The first X-axis wedge movable ram 1324 is fixed to one side of the upper end of the slide member 1322 and is located above the carrier plate 112. Its pressing surface is perpendicular to the x-axis direction, and this pressing surface is correspondingly arranged opposite to the pressing surface 122a of the X-axis wedge fixed ram 122 in the x-axis direction. The second X-axis wedge movable ram 1325 is also fixed to the same side of the upper end of the slide member 1322 and is located above the carrier plate 112. Its pressing surface is perpendicular to the x-axis direction, and this pressing surface is correspondingly arranged opposite to the pressing surface of the X-axis alignment fixed ram 123 in the x-axis direction. In an alternative embodiment, the first X-axis wedge movable ram 1324 and the second X-axis wedge movable ram 1325 can also be made into a single component, that is, a longer movable ram that corresponds to the two fixed rams.

[0061] A second Y-axis cylinder 1326 is mounted on the upper end of the slide assembly 1322 and positioned above the first carrier 11. One end of the cylinder's piston rod faces the Y-axis alignment fixed ram 124 and is extendable along the Y-axis. A second cylinder protector 1327 covers one end of the piston rod of the second Y-axis cylinder 1325 and has a structure similar to that of the first cylinder protector 1313.

[0062] The Y-plate movable pressure head 1328 is fixed to the end of the piston rod of the second Y-direction cylinder 1325 through the corresponding mounting plate, and its pressing surface is perpendicular to the Y-axis direction, and the pressing surface is correspondingly arranged opposite to the Y-direction alignment fixed pressure head 124 in the Y-axis direction.

[0063] That is, the two alignment fixing pressure heads are used to clamp and fix the plywood 222 in two directions, and to align the two side edges of the plywood 222 with the two side edges of the wedge block 221 respectively.

[0064] The third movable assembly 133 includes a third Y-direction cylinder 1331 , a mounting plate 1332 , a Y-direction wedge movable pressure head 1333 , and a Y-direction pressing limiter 1334 .

[0065] The third Y-axis cylinder 1331 is mounted on the lower surface of the carrier plate 112. It has a piston rod with one end facing outward from the carrier plate 112, and the piston rod is extendable along the y-axis. A mounting plate 1332 is fixed to the outer end of the piston rod, with one end of the mounting plate 1332 positioned above the carrier plate 112. A Y-axis movable wedge ram 1333 is fixed to this end of the mounting plate 1332, i.e., positioned above the carrier plate 112. The pressing surface of the Y-axis movable wedge ram 1333 is perpendicular to the y-axis and is positioned opposite the pressing surface of the Y-axis alignment fixed ram 124 in the y-axis direction.

[0066] Y-axis clamping stopper 1334 is a rectangular parallelepiped and is fixed to mounting plate 1332 on the same surface as the Y-axis wedge movable ram 1333. Its position corresponds to the limiting notch 112c on the mounting plate 112. When the piston rod of the third Y-axis cylinder 1331 is retracted, the Y-axis clamping stopper 1334 engages with the limiting notch 112c and abuts against one side of the notch, thereby limiting the travel of the Y-axis wedge movable ram 1333.

[0067] Therefore, a long strip of wedge placement section 134 is formed between the multiple pressing surfaces of the X-axis alignment fixed ram 123, the Y-axis alignment fixed ram 124, the X-axis wedge fixed ram 122, the Y-axis wedge movable ram 1333, the first X-axis wedge movable ram 1324, and the second X-axis wedge movable ram 1325, and the upper surface of the mounting plate 112. A roughly rectangular plywood placement section 135 is formed between the pressing surfaces of the X-axis alignment fixed ram 123, the Y-axis alignment fixed ram 124, the X-axis plate movable ram 1312, and the Y-axis plate movable ram 1328.

[0068] In this embodiment, the material of the above-mentioned pressing head is stainless steel. Glue may overflow from the contact area between the plywood 222 and the wedge block 221. The stainless steel pressing head can easily remove the glue even if it sticks to the pressing head.

[0069] The J-shaped clamping unit 20 includes a loading frame 21, a fixed clamping mechanism 22, and a movable clamping mechanism 23. Their structures are basically the same as the corresponding structures of the first clamping unit 10. The only difference is that the L-shaped clamping unit 10 and the J-shaped clamping unit 20 are arranged in a mirror-symmetrical manner along the midline of their side-by-side arrangement direction.

[0070] In addition, in this embodiment, some parts of the L-shaped clamping unit 10 and the J-shaped clamping unit 20 are formed integrally, which makes the overall number of parts relatively better and the structure more compact, and is also conducive to making the processed pair of J-shaped workpieces and L-shaped workpieces have better consistency. For example, the loading plate 112 of the L-shaped clamping unit 10 and the loading plate 212 of the J-shaped clamping unit 20 are an integrated plate, which is arranged on the base plate 31 through four columns. The two limit notches on the two loading plates are connected to form a single notch, and the single notch is located in the middle of one side of the above-mentioned plate; the guide rail 1321 of the L-shaped clamping unit 10 and the guide rail of the J-shaped clamping unit 20 are two integrated guide rails; the third Y-axis cylinder 1331 of the L-shaped clamping unit 10 and the third Y-axis cylinder of the J-shaped clamping unit 20 are the same cylinder, and the mounting plate 1332 is also the same mounting plate. The Y-axis wedge movable pressure heads of the two are respectively fixed on the two ends of the mounting plate, and the Y-axis clamping limit member 1334 is fixed in the middle of the mounting plate and corresponds to the above-mentioned single notch.

[0071] In addition, a slide limit component 24 that is roughly in the shape of a right-angled U is provided between the two slide components to limit the relative distance between the two slide components. When the two slide components approach each other to a certain distance, the two ends of the slide limit component 24 respectively abut against the opposite sides of the two slide components, thereby achieving limitation.

[0072] In this embodiment, after the wedge and plywood are stacked and positioned relative to each other using the fixture 100, a nail gun is used to drive nails at the overlapping position of the two, thereby securing the two together to form a right-angled workpiece. The nailing auxiliary unit 40 is used to cooperate with the nail gun to make nailing easier and more accurate.

[0073] The nailing auxiliary unit 40 includes a flip driving cylinder 41 , a transmission assembly 42 , a flip arm 43 and two nailing positioning auxiliary parts 44 .

[0074] The flip drive cylinder 41 is set on the base plate 31, located next to the side of the carrier where the alignment fixed pressure head is set. The cylinder is set vertically, and one end of the piston rod is facing upward and the piston rod can be extended and retracted along the z-axis.

[0075] The transmission assembly 42 includes an adapter 421, a rotating shaft 422, a bearing, a flip bracket 423, and a flip limiter 424. The adapter 421 is Y-shaped, and the rotating shaft 422 is mounted on both ends of the upper part of the adapter 421 through a pair of bearings. The axial direction of the rotating shaft 422 is the x-axis direction. The nailing flip bracket 423 is provided on the base plate 31 and is closer to the carrier relative to the flip drive cylinder 41. The upper end of the flip bracket 423 is a flip support rod, which is a short round rod, and its axial direction is also the x-axis direction. The flip limiter 424 is provided on the flip bracket 423 and is relatively closer to the carrier. Its upper end has a square groove for abutting against the flip arm 32 to limit its flip angle.

[0076] The flip arm 43 is in a T-shape, with the lower end of the T connected to the rotating shaft 422, and a plurality of mounting holes are provided on the upper crossbar of the T. The middle portion of the flip arm 43 rests on the flip support rod of the flip bracket 423, and rotates with it as a fulcrum.

[0077] Two nail positioning auxiliary parts 44 are respectively fixed on the two ends of the upper horizontal bar of the T-shape of the flip arm 43, and are used to nail and position a group of wedge blocks and plywood clamped and fixed by the L-shaped clamping unit 10 and a group of wedge blocks and plywood clamped and fixed by the J-shaped clamping unit 20, so as to facilitate nailing using a nail gun.

[0078] That is, in this embodiment, the L-shaped clamping unit 10 and the J-shaped clamping unit 20 share a nailing auxiliary unit 40. In an alternative solution, a separate nailing auxiliary unit can be provided for each of the two clamping units.

[0079] Figure 7 It is a three-dimensional view of the nail positioning auxiliary component in this embodiment.

[0080] like Figure 7 As shown, the nail positioning aid 44 is a rectangular plate with a missing corner. It is provided with multiple nail positioning holes 441. These holes 441 are through-holes with a gradually varying diameter and a rectangular cross-section. The nail positioning aid 44 includes a buffer layer 442, one surface of which, along its thickness, serves as the outer surface of the buffer layer 442. During use, the side of the nail positioning aid 44 with the buffer layer 442 faces the workpiece. In this embodiment, the buffer layer 442 is made of nylon. The nail positioning aid 44 has two nail positioning holes 441, arranged roughly along one of its diagonals.

[0081] The distance between the two nail positioning aids 44 corresponds to the distance between the two clamping units.

[0082] Figure 8 Schematic diagram of the use state of the fixture structure for processing a right-angle workpiece in this embodiment. Figure 9It is a schematic diagram of the use status of the right-angle workpiece processing fixture in this embodiment.

[0083] like Figure 8 and Figure 9 As shown, when in use, the clamp 100 is positioned under the two nail guns 300 through the positioning holes 311 on the base plate 31, and then the two nail guns 300 can be operated separately or simultaneously to nail a group of wedges and plywood clamped and fixed by the L-shaped clamping unit 10 and a group of wedges and plywood clamped and fixed by the J-shaped clamping unit 20. When nailing, the nozzle of the nail gun 300 is roughly aligned with the nail positioning hole 441 on the nail positioning auxiliary component 44.

[0084] In an alternative solution, the stacked wedges and plywood may be fixed by other methods known in the art. Therefore, the clamp 100 may optionally not have the nailing auxiliary unit 40 or may have a processing auxiliary unit corresponding to other fixing tools.

[0085] The electronic control unit 50 includes a J-type sensor assembly 51 , an L-type sensor assembly 52 , and a relay assembly 53 .

[0086] The J-type sensor assembly 51 is provided in the L-type clamping unit 10 and is used to detect the presence of wedges and plywood, thereby enabling automated control. The J-type sensor assembly 51 includes a wedge detection sensor 511 and a plywood detection sensor 512, both of which are photoelectric sensors. The wedge detection sensor 511 is mounted on the lower surface of the loading plate 112 via a bracket plate, with its detection end portion being disposed in the sensor hole 112b and capable of detecting whether a wedge is placed in the wedge placement portion 134 via the sensor hole 112b. The plywood detection sensor 512 is mounted in the sensor mounting hole 124b via a snap ring, with its detection end portion facing the plywood placement portion 135 and capable of detecting whether a plywood is placed in the plywood placement portion 135.

[0087] The L-shaped sensor assembly 52 is substantially identical to the J-shaped sensor assembly 51 and is disposed at a corresponding position in the J-shaped clamping unit 20 .

[0088] The relay assembly 53 includes a plurality of relays, each of which is used to control the plurality of cylinders.

[0089] Figure 10 This is a flow chart of processing a right-angled workpiece using the above-mentioned right-angled workpiece processing fixture and nail gun in this embodiment.

[0090] like Figure 10 As shown, the process of using the fixture 100 and the nail gun 300 to form a right-angle workpiece (taking the L-shaped workpiece 220L as an example) includes the following steps:

[0091] In step S1 , the wedge block 221 coated with glue at the position to be overlapped is placed in the wedge block placement portion 134 of the L-shaped clamping unit 10 , and then the plywood 222 is placed in the plywood placement portion 135 .

[0092] Before step S1, the flip arm 43 and multiple movable pressure heads are in the reset state, and the distance between the corresponding movable pressure heads and the fixed pressure heads is slightly larger than the corresponding size of the wedge block or the plywood. Preferably, the distance between the corresponding movable pressure heads and the fixed pressure heads is 3 mm larger than the corresponding size of the wedge block or the plywood.

[0093] In step S2, the sensor assembly detects the wedge block 221 and the plywood 222. Under the control of the corresponding relay, the movable pressing mechanism 13 drives multiple movable pressure heads to press toward the corresponding fixed pressure heads, thereby clamping and fixing the stacked wedge block 221 and the plywood 222 and positioning their relative positions.

[0094] In step S2, each movable pressure head can be pressed in sequence according to a predetermined order. For example, the slide drive cylinder 1323 can first drive the first X-direction wedge movable pressure head 1324 and the second X-direction wedge movable pressure head 1325 to move toward the X-direction alignment fixed pressure head 123 and the X-direction wedge fixed pressure head 122 to press the wedge 222 in the x-axis direction; then the third Y-direction cylinder 1331 can drive the Y-direction wedge movable pressure head 1333 to move toward the Y-direction alignment fixed pressure head The fixed pressure head 124 moves, pressing the wedge 222 in the y-axis direction. The first X-axis cylinder 1311 then drives the X-plate movable pressure head 1312 toward the X-alignment fixed pressure head 123, pressing the plywood 221 in the x-axis direction. Finally, the second Y-axis cylinder 1326 drives the Y-plate movable pressure head 1328 toward the Y-alignment fixed pressure head 124, pressing the plywood 221 in the y-axis direction, thereby securing and positioning the two components. Alternatively, several movable pressure heads can perform pressing simultaneously.

[0095] In step S3 , the flip driving cylinder 41 drives the flip arm 43 to flip toward the workpiece, so that the nail positioning auxiliary member 44 is pressed on the overlapping position of the wedge block 221 and the plywood 222 .

[0096] In step S4 , nailing is performed on the overlapping positions of the wedge block 221 and the plywood 222 using the nail gun 300 and the nail positioning holes 441 on the nail positioning auxiliary member 44 to fix the two together to form an L-shaped workpiece 220L.

[0097] In step S5, the flipping drive cylinder 41 drives the flipping arm 43 to flip and open in the opposite direction, and the movable clamping mechanism 13 drives multiple movable pressure heads to move in the direction away from the corresponding fixed pressure heads, so that the clamp 100 is opened, and then the processed L-shaped workpiece 220L can be taken out.

[0098] The processing flow of the J-shaped workpiece 220J is also similar and will not be described in detail. In addition, a J-shaped workpiece 220J and an L-shaped workpiece 220L can also be processed simultaneously according to similar steps.

[0099] Functions and Effects of the Embodiments

[0100] The fixture for processing right-angled workpieces provided in this embodiment includes one or more clamping units, each comprising a fixed pressure block mechanism and a movable pressure block mechanism, each of which includes multiple fixed pressure heads and multiple corresponding movable pressure heads. These clamping units can compress the wedge and plywood in two mutually perpendicular directions, thereby clamping and fixing them and positioning them relative to each other, making nailing and other processing operations easier, and achieving better dimensional accuracy and consistency for the finished right-angled workpiece. In particular, the fixed pressure heads include two alignment fixed pressure heads, and the height of the pressing surfaces of the two alignment fixed pressure heads is at least greater than half the total thickness of the stacked wedge and plywood. Therefore, the two pressing surfaces can cooperate with the corresponding movable pressure heads to align the two sides of the plywood with the corresponding two sides of the wedge, thereby more conveniently and reliably processing J-shaped or L-shaped workpieces.

[0101] In the embodiment, three fixed pressing heads arranged in an L-shape and five movable pressing heads driven by four cylinders are provided, which can effectively press the stacked wedges and plywood along the x-axis and y-axis directions.

[0102] Furthermore, since the J-shaped workpiece and the L-shaped workpiece are relatively small in size, the space available for arranging the clamping structure around them is very limited. Therefore, the second movable component adopts a structural design with a high degree of coupling and a smaller overall size. It achieves clamping of the wedge block and the plywood in two horizontal directions in a very limited space, and also reduces the overall size of the fixture.

[0103] Furthermore, since glue may overflow between the wedge and the plywood during the processing, the cylinder is covered with a stainless steel cylinder protector, and all multiple pressure heads are also made of stainless steel. This can prevent glue from sticking to the piston rod of the cylinder and affecting its movement. Even if the pressure head is stuck with glue, it can be easily removed.

[0104] Furthermore, the fixture of the embodiment includes a J-shaped clamping unit and an L-shaped clamping unit, so a group of J-shaped workpieces and L-shaped workpieces for the same insulation box can be easily processed, and the operation is more convenient.

[0105] Furthermore, the guide rails of the J-shaped clamping unit and the L-shaped clamping unit are unified guide rails, and their third movable components use the same cylinder to drive the same mounting plate, and two Y-direction wedge movable pressure heads are installed on both ends of the mounting plate. Therefore, not only is the structure more streamlined, but it is also conducive to better consistency of a group of J-shaped workpieces and L-shaped workpieces being processed.

[0106] Furthermore, the clamp also includes a nailing auxiliary unit, which can flip two nailing positioning auxiliary parts with nailing positioning holes to the top of the J-shaped clamping unit and the L-shaped clamping unit respectively by flipping, and the nailing positioning holes have a gradient aperture, so they can play an auxiliary role when using a nail gun for nailing, and easily locate the position where nails should be placed on the overlapping part of the wedge block and the plywood, making the nailing operation more efficient.

[0107] The above embodiments are merely examples of specific implementation methods of the present invention, and the present invention is not limited to the scope of the description of the above embodiments. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

[0108] For example, in the above embodiment, the right-angle workpiece processing fixture includes a J-shaped clamping unit and an L-shaped clamping unit. In an alternative embodiment, the right-angle workpiece processing fixture may also include only one J-shaped clamping unit, or one L-shaped clamping unit, or multiple side-by-side J-shaped clamping units, or multiple side-by-side L-shaped clamping units.

[0109] In the above embodiment, the J-shaped clamping unit and the L-shaped clamping unit share some structural components. In an alternative solution, the two units may also have independent structures, for example, the mounting frames are completely separate and are provided with two nailing auxiliary units.

Claims

1. A fixture for processing a right-angled workpiece, used for processing a square column-shaped wedge and a rectangular plate-shaped plywood into a right-angled workpiece, characterized in that: include: one or more clamping units, Wherein, the clamping unit comprises: A fixed pressing block mechanism, comprising a plurality of fixed pressing heads; The movable pressure block mechanism includes a plurality of movable pressure heads, each corresponding to the fixed pressure head and movable relative to the corresponding fixed pressure head, thereby cooperating with the corresponding fixed pressure head to press the wedge block and the plywood in two mutually perpendicular horizontal directions to fix their relative positions. The plurality of fixed pressure heads include two alignment fixed pressure heads, each of which has a pressing surface. The height of the pressing surfaces of the two fixed alignment pressure heads is at least greater than half of the total thickness of the stacked wedge blocks and the plywood. The two pressing surfaces are respectively perpendicular to the two horizontal directions and are used to align the corresponding two side edges of the wedge blocks and the plywood.

2. The right-angle workpiece processing fixture according to claim 1, characterized in that: in, The fixed pressure block mechanism also includes an L-shaped fixing frame, and the fixed pressure heads are all fixed on the inner side of the fixing frame. The two horizontal directions are the x-axis direction and the y-axis direction, The two alignment fixed pressure heads are respectively an X-axis alignment fixed pressure head and a Y-axis alignment fixed pressure head, and their pressing surfaces are respectively perpendicular to the x-axis direction and the y-axis direction. The plurality of fixed pressure heads also include an X-direction wedge fixed pressure head, the pressing surface of which is perpendicular to the x-axis direction. The plurality of movable pressure heads include: The movable pressure head of the X-direction wedge block is movable along the x-axis direction, and its pressing surface is arranged opposite to the pressing surface of the fixed pressure head of the X-direction wedge block in the x-axis direction; The movable pressure head of the Y-direction wedge block is movable along the y-axis direction, and its pressing surface is correspondingly arranged opposite to the pressing surface of the fixed pressure head for Y-direction alignment in the y-axis direction; An X-direction plate movable pressure head is movable along the x-axis direction, and its pressing surface is correspondingly arranged opposite to the pressing surface of the X-direction alignment fixed pressure head in the x-axis direction; and The Y-plate movable pressure head can move along the Y-axis direction, and its pressing surface is arranged opposite to the pressing surface of the Y-alignment fixed pressure head in the Y-axis direction. The pressing surfaces are all flat surfaces, A wedge placement portion corresponding to the shape of the wedge is formed between the multiple pressing surfaces of the X-direction alignment fixed pressure head, the Y-direction alignment fixed pressure head, the X-direction wedge fixed pressure head, the Y-direction wedge movable pressure head, and the X-direction wedge movable pressure head. A plywood placement portion corresponding to the shape of the plywood is formed between the plurality of pressing surfaces of the X-direction alignment fixed pressing head, the Y-direction alignment fixed pressing head, the X-direction plate movable pressing head, and the Y-direction plate movable pressing head.

3. The right-angle workpiece processing fixture according to claim 2, Its characteristics are: Wherein, the movable pressing block mechanism includes: A first movable assembly includes a first X-direction cylinder and the X-direction plate movable pressure head provided on the end of the piston rod of the first X-direction cylinder; The second movable assembly includes a guide rail extending along the x-axis direction, a slide member provided on the guide rail, a slide drive cylinder for driving the slide member to move, the X-direction wedge movable pressure head provided on one side of the upper end of the slide member, a second Y-direction cylinder provided on the upper end of the slide member, and the Y-direction plate movable pressure head provided on the end of the piston rod of the second Y-direction cylinder; and The third movable component includes a third Y-direction cylinder, a mounting plate arranged on the end of the piston rod of the third Y-direction cylinder, and the Y-direction wedge movable pressure head arranged on the mounting plate.

4. The right-angle workpiece processing fixture according to claim 3, characterized in that: in, The clamping unit further includes a base and a loading frame arranged on the base. The loading frame includes a loading plate spaced apart from the base. The first X-direction cylinder is fixed on the upper surface of the mounting plate. The third Y-direction cylinder is fixed on the lower surface of the mounting plate. The loading plate is provided with a clearance hole. The upper end of the slide component passes through the clearance hole, and the second Y-direction cylinder, the Y-direction plate movable pressure head, and the X-direction wedge block movable pressure head are all located above the loading plate.

5. The right-angle workpiece processing fixture according to claim 4, characterized in that: Also includes: Electronic control unit, including sensor components and relay components, The mounting plate is also provided with a sensor hole. A sensor mounting hole is provided on one end of the Y-axis alignment fixed pressure head. The sensor assembly includes a wedge detection sensor and a plywood detection sensor, The wedge block detection sensor is fixed below the loading plate, and its detection end is arranged in the sensor hole and faces the wedge block placement portion, for detecting whether the wedge block is placed in the wedge block placement portion. The plywood detection sensor is fixed to the Y-axis alignment fixed pressure head, and its detection end is arranged in the sensor mounting hole and faces the plywood placement portion, for detecting whether the wedge is placed in the plywood placement portion. The relay assembly includes a plurality of relays, which are respectively used to control the slide drive cylinder, the first X-direction cylinder, the second Y-direction cylinder, and the third Y-direction cylinder.

6. The right-angle workpiece processing fixture according to claim 4, characterized in that: in, The telescopic end of the piston rod of the first X-direction cylinder and the telescopic end of the piston rod of the second Y-direction cylinder are respectively covered with a sheet-like cylinder protection member. The fixed pressure head, the movable pressure head and the cylinder protection component are all made of stainless steel.

7. The right-angle workpiece processing fixture according to claim 3, characterized in that: in, There are two adjacent clamping units, and the two clamping units are mirror-symmetrical along the midline of their arrangement direction, and are respectively used to process a J-shaped workpiece with a right angle J shape and an L-shaped workpiece with an L shape.

8. The right-angle workpiece processing fixture according to claim 7, characterized in that: in, The guide rails of the two clamping units are unified guide rails, A slide limiting component is provided between the slide components of the two clamping units to limit the relative distance between the two slide components. The third Y-direction cylinders of the two clamping units are the same cylinder, and the two mounting plates are integrated plates. The Y-direction wedge movable pressure heads of the two clamping units are respectively fixed to the two ends of the plate.

9. The right-angle workpiece processing fixture according to claim 7, characterized in that: Also includes: The nailing auxiliary unit is used to cooperate with the nail gun to nail the overlapping part of the wedge block and the plywood. Wherein, the nailing auxiliary unit includes: Flip drive cylinder; a turning arm connected to the turning drive cylinder via a corresponding transmission assembly and capable of turning relative to the plywood placement portion; and Two nailing positioning auxiliary parts are respectively arranged on the outer ends of the flip arms and respectively corresponding to the plywood placement parts of the two clamping units. The nail positioning auxiliary piece has one or more nail positioning holes. The nail positioning hole has a gradually smaller hole diameter from one surface to the other surface of the nail positioning aid.

10. The right-angle workpiece processing fixture according to claim 9, Its characteristics are: Wherein, the transmission assembly includes: An adapter, provided on the piston rod of the flip driving cylinder; A rotating shaft is provided on the adapter; a flip bracket, closer to the plywood placement portion than the flip drive cylinder, and having a flip support rod for providing a rotation fulcrum; The flip limiter is closer to the plywood placement portion than the flip bracket and is used to abut against the flip arm to limit its flip angle. The flip arm is T-shaped, the bottom end of the T is connected to the rotating shaft, and the two ends of the upper horizontal bar of the T are respectively provided with the nail positioning auxiliary parts.

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