An automatic stretching, distance - setting, positioning and clamping device for an assembly

Abstract

The present invention discloses an automatic stretching, distance - fixing, positioning and clamping device for an assembly, which comprises a first base and a second base arranged at intervals on a bottom plate. A first cylinder with a mounting seat is arranged on the first base, and a notch for mounting a second cylinder is provided on the first base. The piston rod of the first cylinder passes through the mounting seat and faces the second base, and the piston rod of the second cylinder is perpendicular to the piston rod of the first cylinder. A positioning block is arranged on the second base. Above the first base and the second base, there is a bracket with a bend that partially spans the first base and the second base. First pressing cylinders and second pressing cylinders passing through the bracket are arranged at intervals on the bracket, and the piston rods of the first pressing cylinders and the second pressing cylinders both face the bottom plate. A clamping motion unit is arranged above the first base, and a distance - fixing unit is arranged on the bottom plate between the first base and the second base. This device can achieve automatic and accurate positioning, clamping and distance - fixing of the assembly, and can realize the full automation of the entire processing process.

Description

Technical Field

[0001] The invention relates to automatic feeding and clamping technology, in particular to an automatic stretching, spacing, positioning and clamping device for a combined part. Background Art

[0002] At present, the processing of multiple mating surfaces of combined components usually adopts the method of first processing and then assembly, which is difficult to meet the requirements when the relevant precision requirements are high; or if the processing is adopted after assembly, the combined state is mostly adjusted manually before processing, and full automation is not realized. For example, in the processing of digital calipers and vernier calipers, in order to improve the surface measurement accuracy, the ruler frame and ruler body can be combined and then fine-ground as a whole; the conventional method is to manually pull the ruler frame and ruler body of the combined component to the appropriate specified position size, and then install, position and clamp, or use semi-automatic methods to pull the assembly apart by a fixed distance separately, and then enter the precision grinding process through the intermediate transfer process; if the assembly state adjustment process and the loading, processing and other processes are integrated together to achieve full automation, it will further improve production automation and efficiency.

[0003] The same problem also exists in processing occasions similar to the above-mentioned caliper combination processing. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies in the prior art and to provide an automatic stretching, spacing, positioning and clamping device for assemblies. The device can realize automatic and accurate positioning, clamping and spacing of assemblies, and can realize full automation of the entire processing process.

[0005] The technical solution for achieving the purpose of the present invention is:

[0006] A device for automatically extending a distance, positioning and clamping a combined part, comprising a first base and a second base arranged at intervals on a bottom plate, a first cylinder with a mounting seat being arranged on the first base, a notch for mounting the second cylinder being arranged on the first base, wherein a piston rod of the first cylinder passes through the mounting seat toward the second base, and a direction of the piston rod of the second cylinder is perpendicular to a direction of the piston rod of the first cylinder; a positioning block is arranged on the second base; a bracket with a bend partially spanning the first base and the second base is arranged above the first base and the second base, a first clamping cylinder and a second clamping cylinder passing through the bracket are arranged at intervals on the bracket, and the piston rods of the first clamping cylinder and the second clamping cylinder both face the bottom plate; a clamping movement unit is arranged above the first base, and a distance unit is arranged on the bottom plate between the first base and the second base.

[0007] The clamping motion unit comprises a longitudinal beam frame with an X-direction sliding seat, a cross beam with a Y-direction sliding seat and a lifting arm capable of Z-direction movement on the cross beam slide, wherein the cross beam is fixed on the slide of the longitudinal beam frame, and the longitudinal beam frame is horizontally fixed to the side of the bottom plate through a supporting rod; a combination plate is provided at the lower end of the lifting arm, and a first suction nozzle, a second suction nozzle and a clamping claw are sequentially arranged on the bottom surface of the combination plate, and the perpendicular midlines of the first suction nozzle, the second suction nozzle and the clamping claw are in the same straight line, and the first suction nozzle is close to the first cylinder.

[0008] The distance unit includes a support with a bend fixed on the bottom plate, and the first guide rail and the second guide rail are respectively provided on both sides of the support, and the first guide rail and the second guide rail are respectively provided with a first pressing plate and a second pressing plate on the outside, and a moving seat is arranged across the first guide rail and the second guide rail, and the rear ends of the first pressing plate and the second pressing plate are connected with a third cylinder, and the piston rod of the third cylinder is connected with the moving seat; the front end of the moving seat is provided with a trapezoidal block and a wedge-shaped distance block in the longitudinal direction, that is, from the inside to the outside in the X direction, wherein the inclined surface of the trapezoidal block cooperates with the inclined surface of the wedge-shaped distance block, and the upper surface of the wedge-shaped distance block is connected with the first pressing gas The piston rods of the cylinder and the second pressing cylinder are close to each other; the moving seat is also provided with a fourth cylinder vertically close to the bottom plate, the piston rod of the fourth cylinder is fixedly connected to the trapezoidal block, the two sides of the wedge-shaped distance block that do not contact the trapezoidal block are respectively provided with a first guide baffle with a bend and a second guide baffle, the side of the wedge-shaped distance block away from the trapezoidal block is provided with an L-shaped limiting angle plate, a first spring is provided between the limiting angle plate and the wedge-shaped distance block, a group of second springs is provided between the bottom surface of the limiting angle plate and the moving seat, a limiting plate for limiting the limiting angle plate is also provided on the moving seat, and a cover plate is also provided on the moving seat.

[0009] A processing assembly for processing the assembly is provided in front of the spacing unit, a rotating baffle with a rotating spring is provided on the bottom plate, and a baffle that cooperates with the rotating baffle to close is provided on the bracket.

[0010] The movements of the first cylinder, the second cylinder, the third cylinder, the fourth cylinder, the first pressing cylinder, the second pressing cylinder, the longitudinal beam, the cross beam and the lifting arm, the first suction nozzle, the second suction nozzle and the clamping claw are all controlled by the control console.

[0011] The inclined surface angles of the two inclined surfaces of the trapezoidal block and the wedge-shaped distance block are not greater than the self-locking angle.

[0012] The support is also provided with a detection unit located below the moving seat, which is used to detect the position status of the moving seat.

[0013] When the assembly is placed on the first base, the piston rod of the first cylinder is extended and contacts the assembly.

[0014] The installation position of the support is determined according to the distance and position of the assembly extended to ensure the accuracy of assembly processing.

[0015] The piston rod of the second cylinder contacts the side surface of the assembly for lateral positioning of the assembly.

[0016] An elastic component is arranged between the lifting arm and the combined plate to avoid interference with the lifting arm during movement.

[0017] Working principle:

[0018] (1) When the assembly is initially closed, under the control of the console, the clamps clamp the ruler frame of the assembly, and the first and second suction nozzles suck the ruler body of the assembly under negative pressure, thereby picking up the assembly and moving it to the specified positions of the first and second bases; then the negative pressure of the first and second suction nozzles is released, and the piston rod of the first cylinder is pushed out, driving the ruler body of the assembly to move relative to the ruler frame to the positioning block to stop, realizing the pulling movement, and then the first cylinder and the second cylinder act alternately, the first cylinder retreats - the second cylinder presses - the first cylinder presses, and the ruler body of the assembly is positioned;

[0019] (2) Then, the third cylinder is actuated, the piston rod is pushed out, and the movable seat is pushed on the combined guide rail composed of the first guide rail, the second guide rail, the first guide rail pressure plate, and the second guide rail pressure plate to move between the two claw measuring surfaces of the assembly; during the forward movement, the cylinder body of the fourth cylinder rotates and presses the rotary baffle plate down, and then the fourth cylinder is actuated, the piston rod is extended, and the trapezoidal block is pushed upward. By utilizing the wedge shape of the wedge-shaped distance block and under the action of the first guide baffle plate, the second guide baffle plate and the second spring, the wedge-shaped distance block is driven to extend upward and outward at the same time until the fourth cylinder moves into place;

[0020] (3) The sliding seat of the longitudinal beam frame moves in the X direction, and the combined plate, together with the first suction nozzle, the second suction nozzle and the clamping claw, is driven by the crossbeam and the lifting arm to push the ruler frame in the assembly to move appropriately toward the moving seat. Through elastic displacement, the measuring surface of the ruler frame jaw is pressed against the wedge-shaped distance block, so that the accurate distance between the measuring surface of the ruler frame jaw and the measuring surface of the ruler body jaw is achieved;

[0021] (4) The first pressing cylinder and the second pressing cylinder above the assembly are activated, and the piston rods of the first pressing cylinder and the second pressing cylinder extend downward, respectively pressing the ruler frame and the ruler body of the assembly close to the processing area, thereby achieving reliable pressing of the assembly near the processing area;

[0022] (5) The clamping jaw releases the assembly, the lifting arm is lifted in the Z direction, and the crossbeam and longitudinal beam frame components then move in the X and Y directions, driving the combined plate to move back to the initial position or the next working position. At the same time, the fourth cylinder moves in the opposite direction, and its piston rod drives the trapezoidal block to move downward. Under the action of the first spring and the second spring, the wedge-shaped distance block retracts in the horizontal direction to avoid friction with the assembly parts during the subsequent downward movement; when the trapezoidal block moves downward and hits the lower retaining edge of the wedge-shaped distance block, it directly drives it to move downward until the fourth cylinder moves in the opposite direction and reaches the lower limit, so that the wedge-shaped distance block retracts horizontally and vertically to the initial position; then the third cylinder moves in the opposite direction, and its piston rod drives the moving seat together with the wedge-shaped distance block to retreat to the initial position, and at the same time, the rotary baffle automatically rebounds to the initial vertical state, close to the baffle, forming a seal to prevent the cutting fluid from splashing in;

[0023] (6) The assembly is stretched, spaced, positioned and clamped, and the wedge-shaped spacing block exits the processing area and the processing state is entered. The processing component is controlled by the console to process the stretched opening part of the assembly through the processing movement;

[0024] (7) After the processing is completed, the first clamping cylinder, the second clamping cylinder, the first cylinder, and the second cylinder move in the opposite direction and retract to release the assembly; the longitudinal beam slide, the crossbeam, and the lifting arm work together to move in the X, Y, and Z directions, and the assembly is picked up and transferred to the specified position through the clamping claws, the first suction nozzle and the second suction nozzle on the assembly plate and the negative pressure conversion, completing the unloading, and starting the next round of loading, stretching, spacing, positioning and clamping, and processing cycles; according to another unloading requirement, before the first suction nozzle and the second suction nozzle are converted to negative pressure, the slide on the longitudinal beam is first moved in the X direction, and the corresponding part of the assembly is driven by the clamping claw to move to close with the other part, and the first suction nozzle and the second suction nozzle are then converted to negative pressure to suck the assembly, and the subsequent unloading movement is carried out;

[0025] (8) Each movement link is detected by the detection unit and the built-in sensing elements of each cylinder for position and status detection, and the control console performs corresponding control based on the detection signal.

[0026] This technical solution can be applied to the automated intelligent processing system, and has the following functional characteristics: it can realize the automatic relative extension of the two parts of the assembly to the specified accurate distance to meet the processing requirements; it can automatically and accurately position and clamp; after the distance is completed, the distance component can be linked to shrink and retract to avoid friction with the distance processing parts. This device is combined with the automatic processing link to realize the full automation of the entire processing process including the assembly extension and distance setting link.

[0027] This device can realize automatic and accurate positioning, clamping and spacing of the assembly, and can realize full automation of the entire processing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of an embodiment;

[0029] Figure 2 for Figure 1 Sectional view at AA in the figure;

[0030] Figure 3 for Figure 1 A top view of

[0031] Figure 4 for Figure 2 The cross-sectional view at BB in FIG.

[0032] Figure 5 for Figure 2 Sectional view at CC in FIG.

[0033] Figure 6 for Figure 3 Sectional view at DD in the figure;

[0034] Figure 7 for Figure 4 The cross-sectional view at EE in FIG.

[0035] Figure 8 This is a schematic diagram of the closed state of the assembly in the embodiment;

[0036] Fig. 9 It is a schematic diagram of the assembly in the embodiment in the extended state.

[0037] In the figure, 1, first cylinder; 2, first base; 3, lifting arm; 4, first pressing cylinder; 5, bracket; 6, second pressing cylinder; 7, assembly; 9, positioning block; 10, second base; 11, clamping claw; 12, first suction nozzle; 13, assembly plate; 14, second suction nozzle; 15, bottom plate; 16, support; 17, third cylinder; 18, moving seat; 20. Elastic component; 22. Processing component; 23. Detection unit; 24. Second cylinder; 26. First guide rail; 27. Fourth cylinder; 28. Cover plate; 29. ​​Trapezoidal block; 30. Wedge-shaped distance block; 31. First spring; 32. Limit angle plate; 33. Second spring; 34. Limit plate; 35. Second guide rail; 36. First guide rail pressure plate; 37. Second guide rail pressure plate; 38. First guide baffle; 39. Second guide baffle; 40. Rotating baffle; 41. Baffle; 42. Longitudinal beam; 43. Crossbeam. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the present invention is not limited thereto.

[0039] Example:

[0040] Reference Figure 1-Figure 7, a device for automatically extending a distance, positioning and clamping a combined part, comprising a first base 2 and a second base 10 arranged at intervals on a bottom plate 15, a first cylinder 1 with a mounting seat is arranged on the first base 2, a notch for installing a second cylinder 24 is arranged on the first base 2, wherein a piston rod of the first cylinder 1 passes through the mounting seat toward the second base 10, and a piston rod of the second cylinder 24 is perpendicular to the piston rod direction of the first cylinder 1; a positioning block 9 is arranged on the second base 10, a bracket 5 with a bend partially spanning the first base 2 and the second base 10 is arranged above the first base 2 and the second base 10, a first clamping cylinder 4 and a second clamping cylinder 6 passing through the bracket 5 are arranged at intervals on the bracket 5, and the piston rods of the first clamping cylinder 4 and the second clamping cylinder 6 are both facing the bottom plate 15; a clamping motion unit is arranged above the first base 2, and a distance unit is arranged on the bottom plate 15 between the first base 2 and the second base 10,

[0041] like Figure 2 As shown, the clamping motion unit includes a longitudinal beam frame 42 with an X-direction sliding seat, a cross beam 43 with a Y-direction sliding seat, and a lifting arm 3 that can move in the Z direction on the cross beam slide, wherein the cross beam 43 is fixed on the slide of the longitudinal beam frame 42, and the longitudinal beam frame 42 is horizontally fixed to the side of the bottom plate through a support rod; a combination plate 13 is provided at the lower end of the lifting arm 3, and a first suction nozzle 12, a second suction nozzle 14 and a clamping claw 11 are sequentially arranged on the bottom surface of the combination plate 13, and the perpendicular midlines of the first suction nozzle 12, the second suction nozzle and the clamping claw 11 are on the same straight line, and the first suction nozzle 12 is close to the first cylinder 1.

[0042] like Figure 2-Figure 5As shown, the distance unit includes a bent support 16 fixed on the bottom plate 15, and the two sides of the support 16 are respectively provided with a first guide rail 26 and a second guide rail 35, and the outer sides of the first guide rail 26 and the second guide rail 35 are respectively provided with a first pressing plate 36 and a second pressing plate 37, and a moving seat 18 is cross-arranged on the first guide rail 26 and the second guide rail 35. The rear ends of the first pressing plate 36 and the second pressing plate 37 are connected with a third cylinder 17, and the piston rod of the third cylinder 17 is connected to the moving seat 18. The front end of the moving seat 18 is longitudinally, that is, from the inside to the outside in the X direction, and a trapezoidal block 29 and a wedge-shaped distance block 30 are sequentially provided, wherein the inclined surface of the trapezoidal block 29 cooperates with the inclined surface of the wedge-shaped distance block 30, and the upper surface of the wedge-shaped distance block 30 is close to the piston rods of the first clamping cylinder 4 and the second clamping cylinder 6, and the moving seat 18 is moved. The movable seat 18 is also provided with a fourth cylinder 27 which is vertically close to the bottom plate 15, and the piston rod of the fourth cylinder 27 is fixedly connected to the trapezoidal block 29. The two sides of the wedge-shaped distance block 30 which are not in contact with the trapezoidal block 29 are respectively provided with a first guide baffle 38 and a second guide baffle 39 with a bend, and the side of the wedge-shaped distance block 30 away from the trapezoidal block 29 is provided with an L-shaped limiting angle plate 32, a first spring 31 is provided between the limiting angle plate 32 and the wedge-shaped distance block 30, and a group of second springs 33 are provided between the bottom surface of the limiting angle plate 32 and the movable seat 18, and a limiting plate 34 for limiting the limiting angle plate 32 is also provided on the movable seat 18, and a cover plate 28 is also provided on the movable seat 18, and the first guide baffle 38 and the second guide baffle 39 play a guiding role in the horizontal movement of the wedge-shaped distance block 30.

[0043] like Figure 2 As shown, a processing assembly 22 for processing the assembly 7 is provided in front of the spacing unit, a rotating baffle 40 with a rotating spring is provided on the bottom plate 15, and a baffle 41 closed with the rotating baffle 40 is provided on the bracket 5. The rotating baffle 40 is a simple hinged plate mechanism, and a rotating spring is installed at the hinge. When subjected to a force, it has the function of rotating forward and automatically rebounding. The rotating baffle 40 cooperates with the baffle 41 to form a closed area to prevent the processing chip liquid from splashing in.

[0044] The movements of the first cylinder 1, the second cylinder 24, the third cylinder 17, the fourth cylinder 27, the first clamping cylinder 4, the second clamping cylinder 6, the longitudinal beam 42, the cross beam 43 and the lifting arm 3, the first suction nozzle 12, the second suction nozzle 14 and the clamping claw 11 are all controlled by the control console.

[0045] like Figure 4 As shown, the inclined surface angle α of the two inclined surfaces of the trapezoidal block 29 and the wedge-shaped distance block 30 is not greater than the self-locking angle.

[0046] The support 16 is also provided with a detection unit 23 located below the moving seat 18 for detecting the position status of the moving seat 18 .

[0047] When the assembly 7 is placed on the first base 2 , the piston rod of the first cylinder 1 is extended to contact the assembly 7 .

[0048] The installation position of the support 16 is determined according to the distance L and position of the assembly 7 to ensure the accuracy of the processing of the assembly 7.

[0049] like Figure 6 As shown, the piston rod of the second cylinder 24 contacts the side of the assembly 7 for lateral positioning of the assembly 7 .

[0050] An elastic component 20 is provided between the lifting arm 3 and the combined plate 13 to avoid interference with the lifting arm 3 during movement.

[0051] This example uses a vernier caliper as an example of an assembly, and the processing component in this example is a grinding wheel.

[0052] Working principle:

[0053] (1) When the assembly 7 is initially in the closed state, Figure 8 As shown, under the control of the console, the clamping jaws 11 clamp the ruler frame part of the assembly 7, and the first suction nozzle 12 and the second suction nozzle 14 suck the ruler body part of the assembly 7 with negative pressure, so as to pick up the assembly 7 and move it to the specified positions of the first base 2 and the second base 10; then the negative pressure of the first suction nozzle 12 and the second suction nozzle 14 is released, and the piston rod of the first cylinder 1 is pushed out, driving the ruler body of the assembly 7 to move relative to the ruler frame to the positioning block 9 to stop, and realize the pulling-out movement; then the first cylinder 1 and the second cylinder 24 act alternately, the first cylinder 1 retreats - the second cylinder 24 presses - the first cylinder 1 presses, and the ruler body of the assembly 7 is positioned;

[0054] (2) Then, the third cylinder 17 is actuated, the piston rod is pushed out, and the movable seat 18 is pushed on the combined guide rail composed of the first guide rail 26, the second guide rail 35, the first guide rail pressure plate 36, and the second guide rail pressure plate 37 to move between the two claw measuring surfaces of the ruler frame and the ruler body of the assembly 7; during the forward movement, the cylinder body of the fourth cylinder 27 rotates and presses the rotary baffle 40 downward, and then the fourth cylinder 27 is actuated, the piston rod is extended, and the trapezoidal block 29 is pushed upward. By utilizing the wedge shape of the wedge-shaped distance block 30 and under the action of the first guide baffle 38, the second guide baffle 39 and the second spring 33, the wedge-shaped distance block 30 is driven to extend upward and outward at the same time until the fourth cylinder 27 moves into place;

[0055] (3) The slide of the longitudinal beam frame 42 moves in the X direction, and drives the combination plate 13, the first suction nozzle 12, the second suction nozzle 14 and the clamping claw 11 through the cross beam 43 and the lifting arm 3 to drive the ruler frame in the assembly 7 to move appropriately toward the moving seat 18, and through elastic displacement, the measuring surface of the ruler frame measuring claw is close to the wedge-shaped distance block 30, so as to achieve accurate distance between the measuring surface of the ruler frame measuring claw and the measuring surface of the ruler body measuring claw;

[0056] (4) The first pressing cylinder 4 and the second pressing cylinder 6 above the assembly 7 are activated, and the piston rods of the first pressing cylinder 4 and the second pressing cylinder 6 extend downward, respectively pressing the ruler frame and the ruler body of the assembly 7 close to the processing area, thereby achieving reliable pressing of the assembly 7 near the processing area;

[0057] (5) The clamping jaw 11 releases the assembly 7, and the lifting arm 3 is lifted in the Z direction. The cross beam 43 and the longitudinal beam frame 42 then move in the X and Y directions, driving the assembly plate 13 to move back to the initial position or the next working position. At the same time, the fourth cylinder 27 moves in the opposite direction, and its piston rod drives the trapezoidal block 29 to move downward. Under the action of the first spring 31 and the second spring 33, the wedge-shaped distance block 30 retracts in the horizontal direction to avoid friction with the parts of the assembly 7 during the subsequent downward movement; when the trapezoidal block 29 moves downward and hits the lower retaining edge of the wedge-shaped distance block 30, it directly drives it to move downward until the fourth cylinder 27 moves in the opposite direction and reaches the lower limit, so that the wedge-shaped distance block 30 retracts horizontally and vertically to the initial position; then the third cylinder 17 moves in the opposite direction, and its piston rod drives the moving seat 18 together with the wedge-shaped distance block 30 to retreat to the initial position. At the same time, the rotary baffle 40 automatically rebounds to the initial vertical state, close to the baffle 41, forming a seal to prevent the cutting fluid from splashing in;

[0058] (6) The assembly 7 is stretched, spaced, positioned and clamped, such as Fig. 9 As shown, the wedge-shaped distance block 30 exits the processing area and the movement is completed, and the processing state can be entered. The processing assembly 22 is controlled by the console to process the extended opening portion of the assembly 7 through the processing movement;

[0059] (7) After the processing is completed, the first clamping cylinder 4, the second clamping cylinder 6, the first cylinder 1, and the second cylinder 24 move in the opposite direction and retract to release the assembly 7; the longitudinal beam frame 42 slide, the crossbeam 43, and the lifting arm 3 work together to move in the X, Y, and Z directions, and through the clamping claws 11, the first suction nozzle 12 and the second suction nozzle 14 on the assembly plate 13 and the negative pressure conversion, the assembly 7 is picked up and transferred to the specified position, the unloading is completed, and the next round of loading, stretching, spacing, positioning and clamping, and processing cycles are started; according to another unloading requirement, before the first suction nozzle 12 and the second suction nozzle 14 are converted to negative pressure, the slide on the longitudinal beam frame 42 is first moved in the X direction, and the clamping claw drives the scale frame of the assembly 7 to move to close with the scale body, and the first suction nozzle 12 and the second suction nozzle 14 are then converted to negative pressure to suck the assembly 7, and the subsequent unloading movement is carried out;

[0060] (8) Each movement link is detected by the detection unit 23 and the built-in sensing elements of each cylinder for position and state detection, and the control console performs corresponding control according to the detection signal.

Claims

1. An automatic stretching, spacing, positioning and clamping device for a combination, characterized in that, it includes a first base and a second base spaced on a bottom plate. A first cylinder with a mounting seat is provided on the first base, and a notch for mounting a second cylinder is provided on the first base. The piston rod of the first cylinder passes through the mounting seat and faces the second base, and the direction of the piston rod of the second cylinder is perpendicular to the direction of the piston rod of the first cylinder; a positioning block is provided on the second base; above the first base and the second base, there is a bracket with a bend that partially spans the first base and the second base, and a first pressing cylinder and a second pressing cylinder passing through the bracket are spaced on the bracket. The piston rods of the first pressing cylinder and the second pressing cylinder both face the bottom plate; a clamping movement unit is provided above the first base, and a spacing unit is provided on the bottom plate between the first base and the second base, The clamping movement unit includes a longitudinal beam frame with an X-direction sliding seat, a cross beam with a Y-direction sliding seat, and a lifting arm that can move in the Z-direction on the cross beam seat. The cross beam is fixed on the sliding seat of the longitudinal beam frame, and the longitudinal beam frame is horizontally fixed on the side of the bottom plate through a support rod; a combined plate is provided at the lower end of the lifting arm, and a first suction nozzle, a second suction nozzle and a clamping jaw are sequentially spaced on the bottom surface of the combined plate. The perpendicular bisectors of the first suction nozzle, the second suction nozzle and the clamping jaw are on the same straight line, and the first suction nozzle is close to the first cylinder, The spacing unit includes a bent support fixed on the bottom plate. A first guide rail and a second guide rail are respectively provided on both sides of the support. A first pressing plate and a second pressing plate are respectively provided outside the first guide rail and the second guide rail. A moving seat spans across the first guide rail and the second guide rail. A third cylinder is connected to the rear ends of the first pressing plate and the second pressing plate, and the piston rod of the third cylinder is connected to the moving seat; at the front end of the moving seat in the longitudinal direction, that is, in the X-direction, a trapezoidal block and a wedge-shaped spacing block are sequentially arranged from the inside out. The inclined surface of the trapezoidal block cooperates with the inclined surface of the wedge-shaped spacing block, and the upper surface of the wedge-shaped spacing block is close to the piston rods of the first pressing cylinder and the second pressing cylinder; a vertical fourth cylinder close to the bottom plate is also provided on the moving seat, and the piston rod of the fourth cylinder is fixedly connected to the trapezoidal block. First guiding baffles and second guiding baffles with bends are respectively provided on both sides of the wedge-shaped spacing block where it does not contact the trapezoidal block. An L-shaped limiting angle plate is provided on the side of the wedge-shaped spacing block away from the trapezoidal block. A first spring is provided between the limiting angle plate and the wedge-shaped spacing block, and a group of second springs are provided between the bottom surface of the limiting angle plate and the moving seat. A limiting plate for limiting the limiting angle plate is also provided on the moving seat, and a cover plate is also provided on the moving seat, A processing component for processing the combination is provided in front of the spacing unit, a rotary baffle with a rotary spring is provided on the bottom plate, and a baffle that cooperates and closes with the rotary baffle is provided on the bracket, The movements of the first cylinder, the second cylinder, the third cylinder, the fourth cylinder, the first pressing cylinder, the second pressing cylinder, the longitudinal beam frame, the cross beam and the lifting arm, the first suction nozzle, the second suction nozzle and the clamping jaw are all controlled by a console.

2. An automatic stretching, spacing, positioning and clamping device for a combination according to claim 1, characterized in that, the inclined surface angles of the two inclined surfaces of the trapezoidal block and the wedge-shaped spacing block are not greater than the self-locking angle.

3. An automatic stretching, spacing, positioning and clamping device for a combination part according to claim 1, characterized in that, a detection unit located below the moving seat is further provided on the support.

4. An automatic stretching, spacing, positioning and clamping device for a combination part according to claim 1, characterized in that, when the combination part is placed on the first base, the piston rod of the first cylinder extends and contacts the combination part after extension.

5. An automatic stretching, spacing, positioning and clamping device for a combination part according to claim 1, characterized in that, the installation position of the support is determined according to the stretching distance and position of the combination part.

6. An automatic stretching, spacing, positioning and clamping device for a combination part according to claim 1, characterized in that, the piston rod of the second cylinder contacts the side surface of the combination part.

7. An automatic stretching, spacing, positioning and clamping device for a combination part according to claim 1, characterized in that, an elastic component is provided between the lifting arm and the combination plate.

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