Synchronous variable pitch belt buffer suction structure

Abstract

The application discloses a synchronous variable-distance belt buffer suction structure and relates to the technical field of workpiece suction tools, which comprises a mounting frame, a linear motor mounted on one side of the mounting frame and a connecting seat arranged on the outer wall of a sliding seat of the linear motor, and the front end surface of the mounting frame is provided with a stabilizing seat; the front end surface of the mounting seat is provided with a plurality of moving plates, the front end surface of the moving plate is provided with a positioning seat, and a suction pipe is arranged in a guide opening; a first-stage buffer mechanism is arranged in the lower part of the suction pipe; a second-stage buffer mechanism is mounted on the connecting pipe; a transmission mechanism is arranged in the mounting cavity; a gas guiding mechanism is arranged between the vacuum pump and the connecting pipe; through cooperation of the suction pipe, the first-stage buffer mechanism and the gas guiding mechanism, the pre-pressing and exhaust effect of the suction cup before workpiece suction is improved, the workpiece suction deviation during workpiece suction by the suction cup is avoided, the situation that the suction cup is broken by the edge of the bottom of the suction pipe is avoided, rigid collision between the suction pipe and the workpiece is effectively avoided, and the stability of the workpiece during suction and transfer is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of workpiece suction devices, and particularly relates to a synchronous variable-distance buffer suction structure. BACKGROUND

[0002] When a workpiece is processed, a suction structure needs to be used to move and position the workpiece. However, the variable-distance range of a conventional variable-distance mechanism is fixed, and the interval A of multiple products is converted to the interval B. The fixed interval conversion from A to B is inconvenient. Before the workpiece is sucked, the workpiece cannot be pre-pressed by the suction cylinder. If the workpiece is not pre-pressed between the workpiece and the suction cylinder, a gap is easily formed between the flat-bottomed suction cylinder and the workpiece when the workpiece is sucked. The gap causes the suction cylinder to be unable to stably suck the workpiece, and the workpiece at the bottom of the suction cylinder is easily dropped and displaced during movement, which easily causes a subsequent material shortage. Therefore, the present application proposes a synchronous variable-distance buffer suction structure to solve the above technical problems. SUMMARY

[0003] The present application aims to solve the shortcomings in the prior art and proposes a synchronous variable-distance buffer suction structure.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a synchronous variable-distance buffer suction structure, comprising a mounting frame, a linear motor vertically mounted on one side of the mounting frame, and a connecting seat provided on the outer wall of the sliding seat of the linear motor, the front end surface of the mounting frame is slidably provided with a stabilizing seat, one end of the stabilizing seat is fixedly connected with the connecting seat, the top front end of the mounting frame is transversely provided with a supporting plate, and a plurality of controllers are equidistantly mounted on the supporting plate; a drive box is mounted on the outer side surface of the connecting seat, and a mounting seat is transversely mounted on one side of the front end of the connecting seat, a plurality of moving plates are equidistantly and transversely slidably provided on the front end surface of the mounting seat, a positioning seat is provided on the front end surface of the moving plate, a guide seat is provided on the lower part of the front end surface of the moving plate, a guide hole is vertically provided on the top surface of the guide seat, and a suction pipe for workpiece suction is movably arranged in the guide hole; a first buffer mechanism is arranged in the lower part of the suction pipe; a stabilizing hole is vertically provided on the top of the positioning seat, a connecting pipe is vertically arranged in the stabilizing hole, the bottom end of the connecting pipe is in communication with the suction pipe, and a second buffer mechanism is mounted on the connecting pipe; an installation cavity is transversely provided in the mounting seat, and a transmission mechanism for synchronous variable-distance movement of the plurality of moving plates is arranged in the installation cavity; a vacuum pump for internal suction of the suction pipe is transversely mounted on the front end surface of the stabilizing seat; and a gas guide mechanism is arranged between the vacuum pump and the connecting pipe.

[0005] Preferably, the stable seat is a horizontally arranged L-shaped plate structure, and arc-shaped guide bars are vertically fixed to the middle and both sides of the front end face of the mounting frame, and arc-shaped guide grooves are vertically arranged on the rear end face of the stable seat and the mounting seat in cooperation with the arc-shaped guide bars.

[0006] Preferably, the air guide mechanism comprises a collecting pipe horizontally mounted at the bottom of the vacuum pump, a plurality of rotating joint pipes equidistantly and rotatably connected to the bottom of the collecting pipe, and a connecting hose mounted at the bottom end of each rotating joint pipe, and the outer end of the connecting hose is sealingly connected to the top end of the connecting pipe through a flange.

[0007] Preferably, the transmission mechanism comprises a lead screw horizontally rotatably arranged in the mounting cavity, a plurality of threaded pipes equidistantly sleeved on the lead screw, and a connecting plate vertically fixed to the top of the threaded pipe, the upper part of the rear end face of each moving plate is longitudinally fixed with a sliding plate, the bottom face of the sliding plate is slidingly attached to the top face of the mounting seat, a rectangular slot is horizontally arranged on the inner top face of the mounting cavity, and the outer end of the connecting plate extends out of the rectangular slot and is fixed to the bottom face of the sliding plate, and the driving box is provided with a driving assembly for forward and reverse rotation of the lead screw.

[0008] Preferably, the driving assembly comprises a servo motor arranged on the upper part of one side face of the driving box, a belt pulley arranged on the upper part of the driving box, and a transmission belt sleeved between the two belt pulleys, the driving shaft of the servo motor is movably penetrated into the inside of the driving box and is fixedly connected with the belt pulley on the upper part of the box body, one end of the lead screw is movably penetrated into the inside of the driving box and is fixedly connected with the belt pulley on the lower part of the box body, and the floating end of the mounting seat is provided with a positioning frame for improving the stable rotation performance of the lead screw, and the other end of the lead screw is movably inserted into the stable shaft hole in the center of the positioning frame.

[0009] Preferably, the inner diameter of the suction pipe is narrow at the top and wide at the bottom, the bottom pipe body of the connecting pipe is sealingly connected and fixed in the upper pipe port of the suction pipe, and a purification assembly for filtering gas is mounted in the wide-diameter pipe body of the lower part of the suction pipe.

[0010] Preferably, the first-order buffer mechanism comprises a suction cup arranged below the suction pipe, a guide pipe vertically arranged at the top opening of the suction cup, a limiting ring seat arranged in the bottom opening of the suction pipe, and a anti-falling plate movably arranged above the limiting ring seat, the bottom surface of the anti-falling plate is provided with a stepped internal threaded hole, the pipe body of the guide pipe movably passes through the limiting ring seat and is screwed into the internal threaded hole of the anti-falling plate, a plurality of vertically arranged first-order buffer springs are equidistantly arranged on the outer circle of the top of the anti-falling plate, and the top end of the first-order buffer spring abuts against the bottom surface of the dust screen plate, and an electronic valve is arranged in the lower part of the guide pipe, and a gas pressure detection transmitter is arranged on the upper part of the side wall of the guide pipe.

[0011] Preferably, the second-order buffer mechanism comprises a second-order buffer spring movably sleeved on the middle pipe body of the connecting pipe and an anti-falling ring fixedly sleeved on the upper pipe body of the connecting pipe, the second-order buffer spring is located between the positioning seat and the guide seat, the top end of the second-order buffer spring abuts against the bottom of the positioning seat, and the bottom end abuts against the top end surface of the suction pipe, and the bottom surface of the anti-falling ring abuts against the top surface of the positioning seat.

[0012] Compared with the prior art, the beneficial effects of the present application are:

[0013] 1. The present application can improve the pre-pressing and exhaust effect of the suction cup before the workpiece is sucked, and can also limit the initial pressure of the workpiece before the suction cup adsorbs the workpiece, effectively avoiding the situation that the workpiece is sucked out of position due to the gap when the suction cup adsorbs the workpiece, and can effectively avoid the situation that the suction cup is broken by the edge of the suction pipe when the installation seat is lowered by a certain distance, and can effectively avoid the rigid collision between the suction pipe and the workpiece, and can effectively improve the pre-pressing operation of the suction cup before the workpiece is adsorbed, and can improve the stability of the workpiece during the sucking and transferring.

[0014] 2. The transmission mechanism, the driving assembly and the moving plate cooperate to facilitate the synchronous and same-distance movement of the plurality of suction pipes after the workpiece is sucked, so that the distance between the sucked workpieces before and after the workpiece is discharged remains the same, effectively improving the distance control during the next process of processing the workpiece, thereby improving the work efficiency during the processing of the workpiece, and the gas pressure sensor can monitor the gas pressure value in the guide pipe in real time and transmit the data to the controller, thereby facilitating the monitoring of the unstable sucking of the suction cup during the workpiece taking and placing or before the workpiece is taken, and the controller and the external alarm cooperate to alarm and prompt the situation of the workpiece falling off, thereby effectively avoiding the situation of the subsequent lack of material. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0016] Figure 1 is a schematic view of the overall structure of the present application;

[0017] Figure 2 is a schematic view of the overall structure of the present application from another perspective;

[0018] Figure 3 is a schematic view of the overall structure of the present application from another perspective;

[0019] Figure 4 is a schematic view of the internal structure of the drive box of the present application;

[0020] Figure 5 is a schematic view of the rear structure of the present application;

[0021] Figure 6 is a schematic view of the drive box of the present application in a disassembled state;

[0022] Figure 7 is a schematic view of the drive box of the present application in a disassembled state from one perspective;

[0023] Figure 8 is a schematic view of the connection between the stabilizing seat and the connecting seat of the present application;

[0024] Figure 9 is a schematic view of the connection between the stabilizing seat and the connecting seat of the present application from one perspective;

[0025] Figure 10 is a schematic view of the vacuum pump and the air guiding mechanism of the present application;

[0026] Figure 11 is a schematic view of the vacuum pump and the air guiding mechanism of the present application from one perspective;

[0027] Figure 12 is a schematic view of the vacuum pump and the manifold of the present application;

[0028] Figure 13 is a schematic view of the connection between the manifold and the connecting hose of the present application;

[0029] Figure 14 is a schematic view of the connection between the manifold and the connecting hose of the present application from one perspective;

[0030] Figure 15 is a schematic view of the connection between the manifold and the connecting hose of the present application from another perspective;

[0031] Figure 16Structure schematic diagram of moving plate, positioning seat and suction pipe of the present application;

[0032] Figure 17 Structure schematic diagram of moving plate and sliding plate of the present application;

[0033] Figure 18 Structure schematic diagram of suction pipe, guide seat and suction disc of the present application;

[0034] Figure 19 Structure schematic diagram of suction pipe and connecting pipe in connected state of the present application;

[0035] Figure 20 Structure sectional view of upper part of suction pipe and connecting pipe of the present application;

[0036] Figure 21 Structure sectional view of lower part of suction pipe, suction disc and dustproof screen plate of the present application.

[0037] In the figure, serial number: 1, mounting frame; 2, connecting seat; 3, controller; 4, stabilizing seat; 5, linear motor; 6, drive box; 7, mounting seat; 8, moving plate; 9, positioning seat; 10, guide seat; 11, suction pipe; 12, connecting pipe; 13, vacuum pump; 14, servo motor; 15, lead screw; 16, positioning frame; 17, belt pulley; 18, transmission belt; 19, collecting pipe; 20, connecting hose; 21, suction disc; 22, limiting ring seat; 23, guide pipe; 24, anti-dropping plate; 25, dustproof screen plate; 26, filter screen plate; 27, adsorption core cylinder group; 28, first-order buffer spring; 29, anti-dropping ring; 30, second-order buffer spring. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0039] Embodiment: see Figures 1 to 21The application discloses a synchronous variable-distance belt buffer suction structure which comprises a mounting frame 1, a linear motor 5 vertically mounted on one side of the mounting frame 1 and a connecting seat 2 arranged on the outer wall of a sliding seat of the linear motor 5, a stable seat 4 slidably arranged on the front end surface of the mounting frame 1, one end of the stable seat 4 being fixedly connected with the connecting seat 2, a supporting plate horizontally arranged on the top front end of the mounting frame 1, a plurality of controllers 3 being equidistantly arranged on the supporting plate, a driving box 6 being arranged on the outer side surface of the connecting seat 2, a mounting seat 7 being horizontally arranged on the front end of one side of the connecting seat 2, a plurality of moving plates 8 being equidistantly and horizontally slidably arranged on the front end surface of the mounting seat 7, a positioning seat 9 being arranged on the front end surface of the moving plate 8, a guide seat 10 being arranged on the lower part of the front end surface of the moving plate 8, a guide hole being vertically arranged on the top surface of the guide seat 10, a suction pipe 11 for workpiece suction being movably arranged in the guide hole, a first buffer mechanism being arranged in the lower part of the suction pipe 11, a stable hole being vertically arranged on the top of the positioning seat 9, a connecting pipe 12 being vertically arranged in the stable hole and being in communication with the suction pipe 11, a second buffer mechanism being arranged on the connecting pipe 12, an installation cavity being horizontally arranged in the mounting seat 7, a transmission mechanism for synchronous variable-distance movement of the moving plates 8 being arranged in the installation cavity, a vacuum pump 13 for suction in the suction pipe 11 being horizontally arranged on the front end surface of the stable seat 4, a gas guiding mechanism being arranged between the vacuum pump 13 and the connecting pipe 12, and the first buffer mechanism and the gas guiding mechanism being matched with the suction pipe 11, so that the pre-pressing and exhaust effect of a suction disc 21 before workpiece suction is improved, the workpiece is pre-pressed and limited before the workpiece is sucked by the suction disc 21, and the workpiece suction deviation caused by a gap when the workpiece is sucked by the suction disc 21 is avoided.

[0040] The stable seat 4 is an L-shaped plate structure arranged horizontally, arc-shaped guide bars are vertically fixed on the middle and both sides of the front end surface of the mounting frame 1, and arc-shaped guide grooves are vertically arranged on the stable seat 4 and the rear end surface of the mounting seat 7 in cooperation with the arc-shaped guide bars; the air guide mechanism comprises a collecting pipe 19 horizontally mounted at the bottom of the vacuum pump 13, a plurality of rotating joint pipes equally spaced and rotatably connected to the bottom of the collecting pipe 19, and a connecting hose 20 mounted at the bottom end of each rotating joint pipe, the collecting pipe 19 is fixedly connected to the vacuum pump 13, and the outer end of the connecting hose 20 is sealingly connected to the top end of the connecting pipe 12 through a flange; the transmission mechanism comprises a lead screw 15 horizontally rotatably arranged in the mounting cavity, a plurality of threaded pipes equally sleeved on the lead screw 15, and a connecting plate vertically fixed on the top of the threaded pipe, the rear end surface of each moving plate 8 is longitudinally fixed with a sliding plate, the bottom surface of the sliding plate is slidingly attached to the top surface of the mounting seat 7, the inner top surface of the mounting cavity is horizontally provided with a rectangular slot, the outer end of the connecting plate extends out of the rectangular slot and is fixed to the bottom surface of the sliding plate, and the driving box 6 is provided with a driving assembly for forward and reverse rotation of the lead screw 15; the driving assembly comprises a servo motor 14 arranged on the upper part of one side surface of the driving box 6, a belt pulley 17 arranged on the upper part of the driving box 6, and a transmission belt 18 sleeved between the two belt pulleys 17, the driving shaft of the servo motor 14 is movably inserted into the inside of the driving box 6 and fixedly connected with the belt pulley 17 on the upper part of the box body; one end of the lead screw 15 is movably inserted into the inside of the driving box 6 and fixedly connected with the belt pulley 17 on the lower part of the box body; the free end of the mounting seat 7 is provided with a positioning frame 16 for improving the stable rotation performance of the lead screw 15, and the other end of the lead screw 15 is movably inserted into the stable shaft hole in the center of the positioning frame 16; through the cooperation of the transmission mechanism, the driving assembly and the moving plate 8, the plurality of suction pipes 11 can be synchronously and equally spaced moved after sucking the workpiece, the distance between the sucked workpieces before and after the workpiece is discharged is kept the same, the distance control during the next process is effectively improved, and the work efficiency during the workpiece processing is improved.

[0041] In the application, the caliber of the suction pipe 11 is narrow at the top and wide at the bottom, the bottom pipe body of the connecting pipe 12 is sealingly connected and fixed in the upper pipe opening of the suction pipe 11, and the purification assembly for gas filtration is installed in the lower wide-diameter pipe body of the suction pipe 11; the purification assembly comprises a filter screen plate 26, an adsorption core cylinder group 27 arranged at the bottom of the filter screen plate 26, and a dustproof screen plate 25 connected at the bottom of the adsorption core cylinder group 27, the top of the filter screen plate 26 abuts against the inner wall of the top of the wide-diameter pipe body of the suction pipe 11, and the top surface of the dustproof screen plate 25 is provided with an external thread ring in the middle, the adsorption core cylinder group 27 is composed of a plurality of core cylinder structures with different diameters, and is clamped and installed between the filter screen plate 26 and the dustproof screen plate 25; through the arrangement of the purification assembly, the air entering the connecting pipe 12 through the suction pipe 11 can be effectively dispersed and filtered, so that the metal slag is prevented from entering the vacuum pump 13 through the pipeline, the use of the vacuum pump 13 is affected, and the purification assembly installed in the suction pipe 11 can be easily disassembled and cleaned.

[0042] In the application, the first-order buffering mechanism comprises a suction disc 21 arranged below the suction pipe 11, a guide pipe 23 vertically installed at the top opening of the suction disc 21, a limiting ring seat 22 installed in the bottom opening of the suction pipe 11 in a threaded connection manner, and a anti-falling plate 24 movably sealingly arranged above the limiting ring seat 22, the limiting ring seat 22 is installed in the bottom of the suction pipe 11 in a threaded connection manner, so that it can be easily disassembled and cleaned, and the purification assembly installed in the suction pipe 11 can be easily disassembled and cleaned, the bottom surface of the anti-falling plate 24 is provided with a stepped internal thread hole, the pipe body of the guide pipe 23 movably sealingly passes through the limiting ring seat 22 and is screwed into the internal thread hole of the anti-falling plate 24, a plurality of vertical first-order buffering springs 28 are equidistantly arranged on the outer circle of the top of the anti-falling plate 24, and the top end of the first-order buffering spring 28 abuts against the bottom surface of the dustproof screen plate 25; by arranging the first-order buffering spring 28 between the dustproof screen plate 25 and the anti-falling plate 24, the suction disc 21 can play a first-stage buffering role after abutting against the workpiece, after the suction disc 21 is pressed on the workpiece, the lowering of the connecting seat 2 and the mounting seat 7 driven by the linear motor 5 can make the suction disc 21 play a role of initial pressure limiting before adsorbing the workpiece, so that the workpiece is not deviated when the suction disc 21 adsorbs the workpiece due to the gap; an electronic valve is installed in the lower part of the guide pipe 23, and a gas pressure detection transmitter is installed on the upper part of one side wall of the guide pipe 23; through the arrangement of the gas pressure sensor, the gas pressure value in the guide pipe 23 can be monitored in real time, and the data can be transmitted to the controller 3, so that the unstable suction of the suction disc 21 during the workpiece taking and placing or before taking can be monitored, the suction disc 21 that drops the workpiece can be monitored in real time, and the controller 3 and the external alarm can cooperate to alarm and prompt the dropping of the workpiece, so that the subsequent lack of the workpiece can be effectively avoided.

[0043] In the application, the second-order buffering mechanism comprises a second-order buffering spring 30 movably sleeved on the middle pipe body of the connecting pipe 12 and an anti-disengagement ring 29 fixedly sleeved on the upper pipe body of the connecting pipe 12, the second-order buffering spring 30 is located between the positioning seat 9 and the guide seat 10, the top end of the second-order buffering spring 30 abuts against the bottom of the positioning seat 9, and the bottom end abuts against the top end surface of the bottom end of the suction pipe 11; the bottom surface of the anti-disengagement ring 29 abuts against the top surface of the positioning seat 9; meanwhile, when the descending distance of the mounting seat 7 deviates, the cooperation of the second-order buffering spring 30 and the anti-disengagement ring 29 can effectively avoid the situation that the bottom edge of the suction pipe 11 breaks the suction disc 21, and can effectively avoid the rigid collision between the suction pipe 11 and the workpiece, and can effectively improve the pre-pressing operation of the suction disc 21 before the workpiece is adsorbed, and can improve the stability of the workpiece during the suction and transfer.

[0044] Working principle: in this embodiment, the application also proposes a use method of the synchronous variable-distance buffering suction structure, comprising the following steps:

[0045] Step one, first, the device is installed on the rotary table support where the workpiece transfer operation is needed through the mounting frame 1, then the linear motor 5, the vacuum pump 13, the servo motor 14, the electronic valve and the air pressure detection sensor are electrically connected with the controller 3 respectively, the controller 3 is connected with an external alarm, and the electronic valve and the air pressure detection sensor inside each suction pipe 11 installed on the moving plate 8 are electrically connected with the corresponding controller 3, and the multiple controllers 3 can control the corresponding suction pipes 11 to take and place the material respectively;

[0046] Step two, when the material needs to be taken, the upper pulley 17 is driven to rotate by starting the servo motor 14, the lower pulley 17 is driven to rotate under the action of the transmission belt 18, and the lead screw 15 is driven to rotate when the lower pulley 17 rotates, the lead screw 15 is first driven to rotate in the positive direction by the driving assembly, so that all the threaded pipes on the lead screw 15 move to the left, and when all the threaded pipes move synchronously, the multiple moving plates 8 are driven to move synchronously and at the same distance under the action of the connection between the connecting plate and the sliding plate, until they move to the workpiece to be sucked.

[0047] Step three, then the linear motor 5 is started, the sliding seat of the linear motor 5 drives the connecting seat 2 to move up and down, the stable seat 4 and the mounting seat 7 are synchronously lowered by the lowering of the connecting seat 2, the multiple suction pipes 11 installed on the guide seat 10 are synchronously lowered when the mounting seat 7 is lowered, if the length of the workpiece is greater than the length of one suction pipe 11, the workpiece can be sucked by two or more suction pipes 11.

[0048] Step four, when the suction pipe 11 with the mounting seat 7 and the moving plate 8 is lowered, the suction disc 21 at the bottom end of the suction pipe 11 will first contact the surface of the workpiece, and when the suction disc 21 contacts the workpiece, the first-stage buffer spring 28 will be extruded by the connecting action of the guide pipe 23 and the anti-dropping plate 24, and by arranging the first-stage buffer spring 28 between the dust screen plate 25 and the anti-dropping plate 24, the suction disc 21 can play a first-stage buffer role after abutting against the workpiece, and after the suction disc 21 is pressed on the workpiece, the lowering of the connecting seat 2 and the mounting seat 7 driven by the linear motor 5 can make the suction disc 21 play a pre-pressing limiting role before adsorbing the workpiece, avoiding the workpiece adsorption deviation due to the gap when the suction disc 21 adsorbs the workpiece;

[0049] Step five, and by movably arranging the suction pipe 11 in the guide seat 10, when the mounting seat 7 has too much lowering height error, the suction pipe 11 can continue to rise after the suction disc 21 and the first-stage buffer spring 28 complete the first-stage buffer, and when the suction pipe 11 rises, the second-stage buffer spring 30 sleeved on the connecting pipe 12 can play a role in stabilizing the unloading force of the suction pipe 11, avoiding the suction disc 21 being broken by the bottom edge of the suction pipe 11, and effectively avoiding the rigid collision between the suction pipe 11 and the workpiece, which can effectively improve the pre-pressing operation of the suction disc 21 before adsorbing the workpiece;

[0050] Step six, after the suction disc 21 completes the pre-pressing operation on the workpiece, the vacuum pump 13 is started, the connecting pipe 12 can perform air extraction on the inside of the suction pipe 11 through the cooperation of the manifold 19 and the connecting hose 20, so that the suction disc 21 can stably adsorb the workpiece, and by arranging the electronic valve in the guide pipe 23, the suction disc 21 that is not in use can be closed, avoiding the situation that the unused suction disc 21 is in long-term ventilation with the outside world, affecting the adsorption force of the other suction disc 21 in use, and through the arrangement of the air pressure sensor, the air pressure value in the guide pipe 23 can be monitored in real time, and the data can be transmitted to the controller 3, so that the suction disc 21 that has dropped can be monitored during the workpiece taking and placing process, and the controller 3 cooperates with the external alarm to alarm and prompt the situation of dropping; after the suction disc 21 stably adsorbs the workpiece, the driving assembly drives the transmission mechanism to rotate, so that the reversed lead screw 15 drives the threaded pipe to move back to the other side, and then the suction pipe 11 installed in the guide seat 10 can drive the workpiece to move synchronously and at the same distance through the moving plate 8, so that the distance between the workpieces before and after the workpiece is taken remains the same; it can improve the distance control when the next process processes the workpiece.

[0051] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A synchronous variable pitch belt buffer suction structure, comprising a mounting frame (1), a linear motor (5) vertically mounted on one side of the mounting frame (1), and a connecting seat (2) disposed on the outer wall of the sliding seat of the linear motor (5), characterized in that: The mounting bracket (1) has a slidable stabilizing seat (4) on its front end face, and one end of the stabilizing seat (4) is fixedly connected to the connecting seat (2). The mounting bracket (1) has a horizontal support plate at the top front end, and multiple controllers (3) are installed on the support plate at equal intervals. The connecting seat (2) has a drive box (6) on its outer side, and a horizontal mounting seat (7) is installed on one side front end of the connecting seat (2). Multiple moving plates (8) are slidably arranged on the front end face of the mounting seat (7) at equal intervals. The moving plate (8) has a positioning seat (9) at the upper part of its front end face, and a guide seat (10) is provided at the lower part of its front end face. The guide seat (10) has a guide opening vertically on its top surface, and a suction pipe (11) for adsorbing workpieces is movably arranged inside the guide opening. A first-stage buffer mechanism is provided in the lower part of the suction pipe (11). The top of the positioning seat (9) is vertically provided with a stabilizing hole, and the bottom end of the stabilizing hole is vertically provided with a connecting pipe (12) that communicates with the suction pipe (11), and a second-stage buffer mechanism is installed on the connecting pipe (12); the mounting seat (7) is horizontally provided with a mounting cavity, and the mounting cavity is provided with a transmission mechanism for synchronous variable pitch movement of multiple moving plates (8); a vacuum pump (13) for suction inside the suction pipe (11) is horizontally installed on the front end face of the stabilizing seat (4); a gas guiding mechanism is provided between the vacuum pump (13) and the connecting pipe (12); The transmission mechanism includes a lead screw (15) that is laterally rotated in the mounting cavity, multiple threaded tubes that are equidistantly sleeved on the lead screw (15), and a connecting plate that is vertically fixed to the top of the threaded tubes. Each movable plate (8) has a sliding plate that is longitudinally fixed to the upper part of its rear end face, and the bottom surface of the sliding plate slides against the top surface of the mounting base (7). The inner top surface of the mounting cavity has a rectangular slot that is laterally opened, and the outer end of the connecting plate extends out from the rectangular slot and is fixed to the bottom surface of the sliding plate. The drive box (6) is provided with a drive assembly for the forward and reverse rotation of the lead screw (15). The suction pipe (11) has a narrow upper diameter and a wide lower diameter, and the bottom tube of the connecting pipe (12) is sealed and fixed inside the upper opening of the suction pipe (11). A purification component for gas filtration is installed inside the lower wide diameter tube of the suction pipe (11). The purification component includes a filter screen plate (26), an adsorption core cylinder assembly (27) located at the bottom of the filter screen plate (26), and a dustproof screen plate (25) connected to the bottom of the adsorption core cylinder assembly (27). The top of the filter screen plate (26) abuts against the top inner wall of the wide diameter tube of the suction pipe (11), and an external threaded ring protrudes from the middle of the top surface of the dustproof screen plate (25). The adsorption core cylinder assembly (27) is composed of multiple core cylinder structures with different diameters, and the adsorption core cylinder assembly (27) is clamped and installed between the filter screen plate (26) and the dustproof screen plate (25). The first-stage buffer mechanism includes a suction cup (21) located below the suction pipe (11), a guide tube (23) vertically installed at the top opening of the suction cup (21), a limiting ring seat (22) installed in the bottom opening of the suction pipe (11), and an anti-detachment plate (24) movably sealed above the limiting ring seat (22). The bottom surface of the anti-detachment plate (24) is provided with a stepped internal thread hole. The tube body of the guide tube (23) movably seals through the limiting ring seat (22) and is screwed into the internal thread hole of the anti-detachment plate (24). The outer ring at the top of the anti-detachment plate (24) is provided with a plurality of vertically placed first-stage buffer springs (28) at equal intervals, and the top of the first-stage buffer springs (28) abuts against the bottom surface of the dustproof mesh plate (25). An electronic valve is installed in the lower part of the guide tube (23), and a pneumatic detection actuator is installed on the upper part of one side wall of the guide tube (23). The second-stage buffer mechanism includes a second-stage buffer spring (30) movably sleeved on the middle tube body of the connecting pipe (12) and an anti-detachment ring (29) fixedly sleeved on the upper tube body of the connecting pipe (12). The second-stage buffer spring (30) is located between the positioning seat (9) and the guide seat (10). The top end of the second-stage buffer spring (30) abuts against the bottom of the positioning seat (9) and the bottom end abuts against the top and bottom ends of the suction pipe (11). The bottom surface of the anti-detachment ring (29) abuts against the top surface of the positioning seat (9).

2. The synchronous variable pitch belt buffer suction structure according to claim 1, characterized in that: The stabilizer (4) is a horizontally arranged L-shaped plate structure. The front end face of the mounting bracket (1) is vertically fixed with arc-shaped guide bars on the middle and both sides. The rear end faces of the stabilizer (4) and the mounting bracket (7) are both vertically provided with arc-shaped guide grooves in cooperation with the arc-shaped guide bars.

3. The synchronous variable pitch belt buffer suction structure according to claim 2, characterized in that: The gas guiding mechanism includes a manifold (19) horizontally installed at the bottom of the vacuum pump (13), multiple rotating joint pipes equidistantly rotating and connected at the bottom of the manifold (19), and a connecting hose (20) installed at the bottom of each rotating joint pipe. The outer end of the connecting hose (20) is sealed to the top end of the connecting pipe (12) by a flange.

4. The synchronous variable-pitch belt buffer suction structure according to claim 1, characterized in that: The drive assembly includes a servo motor (14) located on the upper side of one side of the drive box (6), pulleys (17) located at the upper and lower ends of the drive box (6), and a transmission belt (18) sleeved between the two pulleys (17). The drive shaft of the servo motor (14) is movably inserted into the drive box (6) and is connected and fixed to the pulley (17) in the upper part of the box. One end of the lead screw (15) is movably inserted into the drive box (6) and is connected and fixed to the pulley (17) in the lower part of the box. The suspended end of the mounting base (7) is equipped with a positioning frame (16) for improving the stable rotation performance of the lead screw (15), and the other end of the lead screw (15) passes out from the mounting cavity and is movably inserted into the stable shaft hole at the center of the positioning frame (16).

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