A sheet transfer device

Abstract

The present invention discloses a sheet transferring device, which comprises a frame, a carriage slidably arranged on the frame, and a traction mechanism for driving the carriage to move back and forth. A plurality of material supporting arms extending in the front-back direction and a constant pressure mechanism for pressing the sheet against the material supporting arms are arranged on the carriage. A material lifting roller and a lifting driving mechanism for driving the material lifting roller to move up and down are arranged upstream of the material supporting arms; an auxiliary supporting mechanism for supporting the front end of the sheet is arranged on the material supporting arms. The lifting driving mechanism drives the material lifting roller to continuously perform reciprocating actions of rising and falling within a set time. After the sheet is lifted by the material lifting roller, the sheet directly slides onto the top surface of the material supporting arms without jamming. In addition, the front end of the sheet is supported by the supporting bar, so as to avoid the front end of the sheet from bending downward under the action of gravity, and the sheet is smoothly fed horizontally onto the welding device, thereby avoiding jamming when the front edge of the sheet is connected with the welding device.

Description

Technical Field

[0001] The present invention relates to the field of laser welding, and particularly to a sheet transfer device. Background Art

[0002] In the cold rolling continuous production process, in order to form continuous rolling, it is very important to weld the end of the forward sheet and the head of the subsequent sheet into one body. Before laser welding, the subsequent sheet needs to be positioned by a positioning device first, and then the head of the subsequent sheet is sent into the welding device through a transfer device, that is, the transfer device is located upstream of the welding device. The transfer device mainly presses the sheet against the material supporting arm through a constant pressure mechanism, and then pulls the sheet forward in the direction of the welding device. However, during the process of the sheet transitioning from the positioning device to the material supporting arm, the front end of the sheet bends downward due to lack of support, which causes the sheet to be unable to maintain a horizontal conveying state, resulting in a jamming problem when the sheet is connected to the material supporting arm, that is, the sheet gets stuck on the rear end head of the material supporting arm and cannot be flatly pressed on the top surface of the material supporting arm. In addition, when the sheet is pulled forward in the direction of the welding device, in order to enable the front end of the subsequent sheet to be connected to the welding device without the material supporting arm interfering with the welding device, the front end of the sheet will extend beyond the front end of the material supporting arm, which will cause the front end of the sheet to bend downward due to lack of support, making it easy to have a jamming problem when the front end of the sheet is connected to the welding device, that is, the sheet interferes with the components of the welding device and changes its normal transmission path.

[0003] It can be seen that the existing technology still needs to be improved. Summary of the Invention

[0004] In view of the above deficiencies of the prior art, the purpose of the present invention is to provide a sheet transfer device, aiming to solve the jamming problem that occurs when the sheet transitions from the positioning device to the material supporting arm by setting a top roller, and to solve the jamming problem that occurs when the front end of the sheet is connected to the welding device by setting an auxiliary supporting mechanism.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A sheet transfer device includes a frame, a carriage slidably arranged on the frame, a traction mechanism for driving the carriage to move back and forth, a plurality of material supporting arms extending in the front-rear direction arranged on the carriage, and a constant pressure mechanism for pressing the sheet against the material supporting arms. A top roller and a lifting drive mechanism for driving the top roller to move up and down are arranged upstream of the material supporting arms; an auxiliary supporting mechanism for supporting the front end of the sheet is arranged on the material supporting arms.

[0007] As a further improvement of the above technical solution, the lifting roller extends in the left-right direction, and the lifting drive mechanism includes two lifting linear drivers arranged upward, and the output ends of the two lifting linear drivers are respectively connected to the two ends of the lifting roller.

[0008] As a further improvement of the above technical solution, the auxiliary supporting mechanism includes a bracket, a support bar and an avoidance linear driver installed on the side of the support arm, the support bar includes a flat plate portion horizontally arranged above the bracket and a first vertical plate portion arranged at one end of the flat plate portion, the avoidance linear driver is transmission-connected to the first vertical plate portion and is used to drive the support bar to move forward and backward.

[0009] As a further improvement of the above technical solution, the support bar also includes a second vertical plate portion arranged at the other end of the flat plate portion, the bracket is provided with a guide seat and a guide rod horizontally inserted in the guide seat, one end of the guide rod is connected to the first vertical plate portion, and the other end of the guide rod is connected to the second vertical plate portion.

[0010] As a further improvement of the above technical solution, the frame is provided with a first travel switch, a second travel switch, a third travel switch and a fourth travel switch arranged in sequence from back to front; the slide is provided with a front trigger plate and a rear trigger plate for triggering the travel switch, the front trigger plate is installed on the front end surface of the slide, and the rear trigger plate is installed on the rear end surface of the slide.

[0011] As a further improvement of the above technical solution, the support arm is made of a square tube, and a notch is provided at the bottom of the front end of the support arm, so that the entire support arm is shape.

[0012] As a further improvement of the above technical solution, the constant pressure mechanism includes a gantry frame arranged on the slide, a plurality of downward-pressing linear actuators arranged downward on the crossbeam of the gantry frame, and a pressure block is arranged at the output end of each downward-pressing linear actuator.

[0013] As a further improvement of the above technical solution, the frame includes two first square tubes symmetrically arranged and extending in the front-to-back direction and a second square tube connecting the two first square tubes, and a right-angle support is fixedly provided at the bottom of the first square tube.

[0014] As a further improvement of the above technical solution, each first square tube is provided with a guide rail extending in the front-to-back direction, the bottom of the slide is slidably connected to the guide rail through a slider, and the first square tube is provided with two groups of limit assemblies for limiting the forward and backward strokes of the slide; each group of limit assemblies includes a limit seat, a buffer arranged on the limit seat, and a limit adjustment screw arranged on the limit seat.

[0015] As a further improvement of the above technical solution, the traction mechanism includes two groups of synchronous belt drive components respectively arranged on the corresponding first square tubes and a linkage mechanism that drives the two synchronous belt drive components to move synchronously, each group of synchronous belt drive components includes a rear receiving seat installed at the rear end of the first square tube, a driving wheel rotatably installed on the rear receiving seat, a front receiving seat installed at the front end of the first square tube, and a driven wheel rotatably installed on the front receiving seat, each driving wheel is connected to the corresponding driven wheel through a synchronous belt, and the two ends of the synchronous belt are connected to the slide through tensioners.

[0016] Beneficial effects:

[0017] Compared with the prior art, by adding a material lifting roller upstream of the supporting arm, the lifting drive mechanism drives the material lifting roller to continuously perform a reciprocating action of rising and falling within the set time. Under the guidance of the arc surface of the material lifting roller and its own elastic deformation, the front end of the sheet material gradually turns over from a downwardly bent state to be flat on the top of the material lifting roller; at the same time, the material lifting roller continuously moves up and down reciprocatingly, and after the sheet material is lifted by the material lifting roller, the sheet material directly slides onto the top surface of the supporting arm, and no jamming problem occurs. In addition, by providing an auxiliary supporting mechanism on the supporting arm, the front end of the sheet material is supported by the supporting strip, thereby preventing the front end of the sheet material from bending downward under the action of gravity, and ensuring that the front end of the sheet material always maintains a horizontally unfolded state during the transfer process; then the constant pressure mechanism presses the sheet material against the supporting arm, and finally the traction mechanism drives the slide to move the sheet material toward the welding device. When the sheet is about to be transferred to the welding device, the auxiliary supporting mechanism avoids the welding device to avoid collision between the auxiliary supporting mechanism and the welding device, and the sheet is smoothly and horizontally fed into the welding device, thereby avoiding jamming problems when the front edge of the sheet is connected with the welding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The three-dimensional sheet material transfer device provided by the present invention Figure 1 .

[0019] Figure 2 for Figure 1 A partial enlarged view of area A.

[0020] Figure 3 The three-dimensional sheet material transfer device provided by the present invention Figure 2 .

[0021] Figure 4 for Figure 3 A partial enlarged view of area B.

[0022] Figure 5 A schematic diagram of the working state of the auxiliary supporting mechanism provided by the present invention in which the sheet material is supported and the sheet material is waiting to be transferred.

[0023] Figure 6 It is a schematic diagram of the working state where the supporting bar on the auxiliary supporting mechanism retracts and gives way after the sheet metal is transferred in place.

[0024] Figure 7 For Figure 6 The partial enlarged view of area C in

[0025] Figure 8 It is a perspective view of the auxiliary supporting mechanism provided by the present invention.

[0026] Description of main component symbols: 1 - frame, 11 - first square tube, 12 - second square tube, 13 - right-angle support, 14 - guide rail, 15 - slider, 2 - carriage, 3 - traction mechanism, 31 - rear receiving seat, 32 - driving wheel, 33 - front receiving seat, 34 - driven wheel, 35 - synchronous belt, 36 - tensioner, 4 - sheet supporting arm, 41 - notch, 5 - constant pressure mechanism, 51 - portal frame, 52 - downward pressing linear driver, 53 - pressing block, 61 - sheet ejecting roller, 62 - sheet ejecting linear driver, 7 - auxiliary supporting mechanism, 71 - bracket, 72 - supporting bar, 721 - flat plate part, 722 - first vertical plate part, 723 - second vertical plate part, 73 - retracting linear driver, 74 - guiding seat, 75 - guiding rod, 81 - first travel switch, 82 - second travel switch, 83 - third travel switch, 84 - fourth travel switch, 85 - front trigger piece, 86 - rear trigger piece, 9 - limiting component, 91 - limiting seat, 92 - buffer, 93 - limiting adjustment screw. Specific embodiments

[0027] The present invention provides a sheet metal transfer device. To make the purpose, technical solution and effects of the present invention clearer and more definite, the following further describes the present invention in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the protection scope of the present invention.

[0028] In this article, "front" is Figure 1 and Figure 3 the direction indicated by the arrow in

[0029] Please refer to Figure 1 and Figure 4, the present invention provides a sheet transferring device, which includes a frame 1, a carriage 2 slidably arranged on the frame 1, and a traction mechanism 3 for driving the carriage 2 to move back and forth. A plurality of material supporting arms 4 extending in the front-rear direction and a constant pressure mechanism 5 for pressing the sheet against the material supporting arms 4 are arranged on the carriage 2. A material pushing roller 61 and a lifting driving mechanism for driving the material pushing roller 61 to move up and down are provided upstream of the material supporting arms 4; an auxiliary supporting mechanism 7 for supporting the front end of the sheet is arranged on the material supporting arms 4. The traction mechanism 3, the constant pressure mechanism 5, the lifting driving mechanism and the auxiliary supporting mechanism 7 are all electrically connected by a control system (such as a PLC control system).

[0030] From Figure 2 It can be seen that a positioning device S is arranged upstream of the sheet transferring device. The positioning device S is installed on the frame 1. A plurality of sheet position sensors S1 are arranged on the positioning device S from front to back. When the sheet position sensor S1 closest to the sheet moving device senses the sheet D, it means that a sheet D needs to be conveyed forward soon. At this time, the sheet position sensor S1 feeds back a signal to the control system, and the control system controls the lifting driving mechanism to act, so that the lifting driving mechanism drives the material pushing roller 61 to continuously perform reciprocating actions of rising and falling within a set time. When the front end of the sheet D passes through the material pushing roller 61, the front end of the sheet first abuts against the arc surface of the material pushing roller 61. Under the action of the pushing force, the sheet continues to move forward. Under the guiding action of the arc surface of the material pushing roller 61 and the action of its own elastic deformation, the sheet gradually turns over and flattens above the material pushing roller 61 from the downwardly bent state; at the same time, the material pushing roller 61 continuously moves up and down reciprocally, and the front edge of the sheet also swings up and down with the material pushing roller 61. Generally, after the sheet is lifted by the material pushing roller 61, the sheet directly slides onto the top surface of the material supporting arms 4 without getting stuck; even if the front edge of the sheet is temporarily stuck at the rear end of the material supporting arms 4 and cannot continue to move forward, the material pushing roller 61 will quickly lift the sheet upward, so that the front edge of the sheet can smoothly cross the top surface of the material supporting arms 4 and press on the material supporting arms 4, thus solving the problem of getting stuck.

[0031] It should be understood that the action duration of the control system for controlling the lifting driving mechanism can be realized by setting the existing control program.

[0032] Such as Figure 5 And Figure 6As shown, when the sheet is completely pressed on the support bar 72 and the support arm 4, the sheet stops being conveyed forward, and the front end of the sheet is supported by the support bar 72, thereby preventing the front end of the sheet from bending downward under the action of gravity, ensuring that the front end of the sheet always remains in a horizontally unfolded state during the transfer process; then the constant pressure mechanism 5 presses the sheet against the support arm 4, and finally the traction mechanism 3 drives the slide 2 to move the sheet toward the welding device. When the sheet is about to be transferred to the welding device, the auxiliary support mechanism 7 avoids the welding device to avoid collision between the auxiliary support mechanism 7 and the welding device, and the sheet is smoothly and horizontally fed to the welding device, thereby avoiding the jamming problem when the front edge of the sheet is connected with the welding device.

[0033] Specifically, the lifting roller 61 extends in the left-right direction, and the lifting drive mechanism includes two lifting linear drivers 62 arranged upward, the output ends of the two lifting linear drivers 62 are respectively connected to the two ends of the lifting roller 61, and the roller end of the lifting roller 61 is fixed to the lifting linear driver 62 by a locking screw 63, and the lifting linear driver 62 is fixed to the slide 2 by a mounting bracket. It should be noted that in the initial state of the lifting roller 61, the height of the lifting roller 61 is flush with the height of the supporting arm 4. After the lifting linear driver 62 drives the lifting roller 61 to complete the up and down reciprocating movement within the set time, the lifting linear driver 62 keeps the lifting roller 61 in the lifting state, that is, the height of the lifting roller 61 is higher than the supporting arm 4. Through such a setting, the height of the sheet material between the positioning device and the supporting arm 4 can be maximized to avoid the sheet material in this part bending downward due to gravity during the transfer process and rubbing against the corners of the slide 2 to affect the product quality. When the welding of the sheet metal is completed, the constant pressure mechanism 5 releases the sheet metal, and the ejection linear driver 62 drives the ejection roller 61 to return to the initial position.

[0034] For details, please refer to Figure 7 and Figure 8 The auxiliary supporting mechanism 7 includes a bracket 71 installed on the side of the supporting arm 4, a supporting bar 72 and an avoidance linear driver 73. The supporting bar 72 includes a flat plate portion 721 horizontally arranged above the bracket 71 and a first vertical plate portion 722 arranged at one end of the flat plate portion 721. The avoidance linear driver 73 is transmission-connected to the first vertical plate portion 722 and is used to drive the supporting bar 72 to move forward and backward.

[0035] In actual application, the number of the auxiliary supporting mechanisms is the same as that of the material supporting arms 4, and one auxiliary supporting mechanism is correspondingly installed on each material supporting arm 4; the auxiliary supporting mechanism is installed on the side surface of the material supporting arm 4, the flat plate portion 721 is flush with the top surface of the material supporting arm 4, and the avoidance linear driver 73 can drive the supporting bar 72 to move in the front-back direction (i.e., the direction close to / away from the welding device). In the initial state, the flat plate portion 721 extends forward, that is, the front end portion of the flat plate portion 721 is closer to the welding device than the front end portion of the material supporting arm 4. During operation, the sheet metal is first conveyed to the material supporting arm 4 through the positioning device. When the sheet metal completely covers the supporting bar 72 and the material supporting arm 4, the front end portion of the sheet metal is supported by the supporting bar 72, as Figure 5 shown, preventing the front end portion of the sheet metal from bending downward under the action of gravity, ensuring that the sheet metal forms a flat front edge of the sheet metal again after cutting, so as to be butt-jointed with the previous sheet metal during the next welding to achieve a better welding effect; then the constant pressure mechanism 5 presses the sheet metal tightly on the material supporting arm 4, and finally the traction mechanism 3 drives the carriage 2 to move the sheet metal forward in the direction of the welding device.

[0036] In order to perform avoidance control on the support bar 72, a first travel switch 81, a second travel switch 82, a third travel switch 83, and a fourth travel switch 84 are sequentially arranged on the frame 1 from the rear to the front; all travel switches and the drive mechanism are electrically connected to the control system. A front trigger piece 85 and a rear trigger piece 86 for triggering the travel switch are arranged on the carriage 2. The front trigger piece 85 is installed on the front end face of the carriage 2, and the rear trigger piece 86 is installed on the rear end face of the carriage 2. In the initial state, the rear trigger piece 86 triggers the first travel switch 81, indicating that the carriage 2 is in the initial position; under the drive of the traction mechanism 3, the carriage 2 moves forward in the direction of the welding device. Although the front trigger piece 85 triggers the second travel switch 82, at this time the support bar 72 is in the extended state and no action will occur; then the front trigger piece 85 triggers the third travel switch 83, indicating that the support bar 72 is very close to the welding device. The third travel switch 83 feeds back a signal to the control system, and the control system controls the avoidance linear actuator 73 to drive the support bar 72 to retreat and avoid, so as to prevent the support bar 72 from colliding with the welding device during the continuous forward movement of the carriage 2. At the same time, the carriage 2 continues to move forward, and the sheet material is smoothly fed horizontally onto the welding device, thus avoiding the problem of jamming when the front end of the sheet material is connected to the welding device. When the front contact piece triggers the fourth travel switch 84, it indicates that the sheet material has been transferred in place, and the welding device welds the head of this sheet material to the tail of the downstream sheet material. After the welding is completed, the constant pressure mechanism 5 releases the sheet material; then the traction mechanism 3 drives the carriage 2 to move backward and reset. Although the rear trigger piece 86 triggers the third travel switch 83, at this time the support bar 72 is in the retracted state and no action will occur. Then the rear trigger piece 86 triggers the second travel switch 82, and the second travel switch 82 feeds back a signal to the control system, causing the avoidance linear actuator 73 to drive the support bar 72 to extend forward again; when the rear trigger piece 86 triggers the first travel switch 81, the carriage 2 resets to the initial position.

[0037] Further, the supporting bar 72 further includes a second vertical plate portion 723 provided at the other end of the flat plate portion 721. A guiding seat 74 is provided on the bracket 71, and a guiding rod 75 is horizontally inserted into the guiding seat 74. One end of the guiding rod 75 is connected to the first vertical plate portion 722, and the other end of the guiding rod 75 is connected to the second vertical plate portion 723. In order to achieve a better welding effect, the front end of the sheet material is cut and leveled, and the auxiliary supporting mechanism supports the sheet material to prevent the front end portion of the sheet material from bending downward under the action of gravity, ensuring that the sheet material forms a flat front edge of the sheet material again after cutting, so as to be butt-jointed with the previous sheet material during the next welding. By such a setting, the guiding rod 75 better supports the supporting bar 72, improves the compressive load of the supporting bar 72, and prevents the supporting bar 72 from deforming under force. When the supporting bar 72 moves horizontally, through the cooperation of the guiding seat 74 and the guiding rod 75, on the one hand, it can ensure that the supporting bar 72 does not have a vertical offset, making the flat plate portion 721 of the supporting bar 72 flush with the top surface of the material supporting arm 4, and preventing the avoidance linear actuator 73 from being damaged by a vertical force.

[0038] In this embodiment, two guiding seats 74 are provided and are linear bearing seats, and the guiding rod 75 is a cylindrical shaft rod and horizontally penetrates through the two guiding seats 74. Providing two linear bearing seats can share the downward pressure of the guiding rod 75, better bear the guiding rod 75 and the supporting bar 72, and the guiding rod 75 slides in cooperation with the linear bearing seats to ensure smooth horizontal sliding of the guiding rod 75.

[0039] Preferably, the material supporting arm 4 is processed from a square tube, which is convenient for procurement and processing and has a low manufacturing cost. The top surface of the material supporting arm 4 forms a smooth supporting surface, and the sheet material is flattened on the supporting surfaces of multiple material supporting arms 4; a notch 41 is opened at the bottom of the front end portion of the material supporting arm 4, making the entire material supporting arm 4 in a shape, and a plurality of mounting holes are opened on the side surface of the material supporting arm 4. The staff can put the screws into the interior of the material supporting arm 4 through the notch 41 and cooperate with the mounting holes for assembly.

[0040] Specifically, the constant pressure mechanism 5 includes a portal frame 51 provided on the carriage 2 and a plurality of downward pressing linear actuators 52 provided on the cross beam of the portal frame 51, and a pressing block 53 is provided at the output end of each downward pressing linear actuator 52. Before transfer, the sheet material is placed on the material supporting arm 4 and the auxiliary supporting mechanism, and the downward pressing linear actuator 52 drives the pressing block 53 to move downward, and the pressing block 53 fixes the sheet material on the material supporting arm 4. On the one hand, the sheet material can move forward with the forward movement of the carriage 2, avoiding the sheet material from shifting during the transfer process; on the other hand, during the cutting and welding processes of the sheet material, the pressing block 53 still presses the sheet material tightly to avoid the sheet material from shifting. It can be understood that after the welding process is completed, the downward pressing linear actuator 52 will drive the pressing block 53 to move upward to release the sheet material.

[0041] The ejector linear driver 62, the avoidance linear driver 73, and the pressing-down linear driver 52 can all be cylinders, electric push rods, hydraulic push rods, linear modules, linear motion modules, lead screw mechanisms, etc. Their main effect is to provide an output end for linear motion. In this embodiment, the ejector linear driver 62 and the pressing-down linear driver 52 adopt double-rod cylinders, and the avoidance linear driver 73 adopts a single-rod cylinder.

[0042] The frame 1 includes two first square tubes 11 symmetrically arranged and extending in the front-rear direction, and a second square tube 12 connecting the two first square tubes 11. A right-angle support 13 is fixedly provided at the bottom of the first square tube 11. By such an arrangement, the sheet material transfer device can form a module and be installed on the production line through the right-angle support.

[0043] To ensure the smooth and stable movement of the carriage 2, a guide rail 14 extending in the front-rear direction is provided on each first square tube 11. The bottom of the carriage 2 is slidably connected to the guide rail 14 through a slider 15.

[0044] Furthermore, two groups of limit assemblies 9 for restricting the forward and backward travel of the carriage 2 are provided on the first square tube 11; each group of limit assemblies 9 includes a limit seat 91, a buffer 92 provided on the limit seat 91, and a limit adjustment screw 93 provided on the limit seat 91. When the carriage 2 is about to reach the position, it first contacts the buffer 92. The buffer 92 absorbs the inertial impact of the movement, decelerates the carriage 2, and then abuts against the end of the limit adjustment screw 93. By turning the limit adjustment screw 93, the final stop position of the carriage 2 can be adjusted, achieving the effect of adjusting the transfer distance of the sheet material and the initial position of the carriage 2.

[0045] Preferably, the traction mechanism 3 includes two groups of synchronous belt drive components respectively arranged on the corresponding first square tubes 11 and a linkage mechanism for driving the two synchronous belt drive components to move synchronously, each group of synchronous belt drive components includes a rear receiving seat 31 installed at the rear end of the first square tube 11, a driving wheel 32 rotatably installed on the rear receiving seat 31, a front receiving seat 33 installed at the front end of the first square tube 11, and a driven wheel 34 rotatably installed on the front receiving seat 33, each driving wheel 32 is connected to the corresponding driven wheel 34 through a synchronous belt 35, and the two ends of the synchronous belt 35 are connected to the slide 2 through a tensioner 36. The tightener 36 includes an L-shaped clamp block 361 and a clamp plate 362, which clamp one end of the synchronous belt 35 together. Two screws 363 are provided at one end of the L-shaped clamp block, and the two screws are fixed to the slide 2 through nuts 364. When tightening the synchronous belt 35, the L-shaped clamp block 361 and the clamp plate 362 can be moved toward the slide 2 by screwing the nuts, so that the synchronous belt 35 is closely meshed with the driving wheel 32 and the driven wheel 34 to ensure the transmission effect. Since the first square tube 11 has an inner cavity, a part of the synchronous belt 35 can be installed in the inner cavity of the first square tube 11, thereby avoiding interference with the frame 1, making the overall structure more compact.

[0046] The linkage mechanism includes a transmission shaft 37 and a reduction motor 38 that is transmission-connected to the transmission shaft 37 . The two driving wheels 32 are sleeved on the transmission shaft. The transmission shaft 37 is rotationally connected to the rear receiving seat 31 .

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] It will be understood that those of ordinary skill in the art can make equivalent substitutions or modifications based on the technical solutions and inventive concepts of the present invention, and all such changes or substitutions shall fall within the protection scope of the present invention.

Claims

1. A sheet material transfer device, characterized in that, It includes a frame, a carriage slidably arranged on the frame, and a traction mechanism for driving the carriage to move back and forth. A plurality of material supporting arms extending in the front-rear direction and a constant pressure mechanism for pressing the sheet material against the material supporting arms are provided on the carriage. A material ejecting roller and a lifting drive mechanism for driving the material ejecting roller to move up and down are arranged upstream of the material supporting arms; an auxiliary supporting mechanism for supporting the front end of the sheet material is provided on the material supporting arms; the material ejecting roller extends in the left-right direction, and the lifting drive mechanism includes two upwardly arranged material ejecting linear drivers, and the output ends of the two material ejecting linear drivers are respectively connected to both ends of the material ejecting roller; during the period when the front end of the sheet material is conveyed forward from the positioning device to the material supporting arms, the lifting drive mechanism drives the material ejecting roller to continuously perform reciprocating actions of rising and falling; the auxiliary supporting mechanism includes a bracket, a supporting strip and an avoidance linear driver installed on the side of the material supporting arm. The supporting strip includes a flat plate portion horizontally arranged above the bracket and a first vertical plate portion arranged at one end of the flat plate portion. The avoidance linear driver is in transmission connection with the first vertical plate portion and is used to drive the supporting strip to move back and forth; the supporting strip further includes a second vertical plate portion arranged at the other end of the flat plate portion. A guide seat and a guide rod horizontally inserted into the guide seat are provided on the bracket. One end of the guide rod is connected to the first vertical plate portion, and the other end of the guide rod is connected to the second vertical plate portion; the material supporting arm is processed from a square tube, and a notch is formed at the bottom of the front end portion of the material supporting arm, so that the whole material supporting arm is in the shape of shape.

2. The sheet material transfer device according to claim 1, characterized in that, The frame is provided with a first travel switch, a second travel switch, a third travel switch and a fourth travel switch arranged in sequence from back to front; the slide is provided with a front trigger plate and a rear trigger plate for triggering the travel switches, the front trigger plate is installed on the front end surface of the slide, and the rear trigger plate is installed on the rear end surface of the slide.

3. The sheet material transfer device according to claim 1, characterized in that, The constant pressure mechanism comprises a gantry frame arranged on the slide, and a plurality of downward pressing linear drivers arranged downward on the cross beam of the gantry frame, and a pressure block is arranged at the output end of each downward pressing linear driver.

4. The sheet material transfer device according to claim 1, characterized in that, The frame comprises two first square tubes which are symmetrically arranged and extend in the front-rear direction and a second square tube which connects the two first square tubes. A right-angle support is fixedly arranged at the bottom of the first square tube.

5. The sheet material transfer device according to claim 4, characterized in that, Each first square tube is provided with a guide rail extending in the front-to-back direction, and the bottom of the slide is slidably connected to the guide rail through a slider. The first square tube is provided with two groups of limit assemblies for limiting the forward and backward travel of the slide; each group of limit assemblies includes a limit seat, a buffer arranged on the limit seat, and a limit adjustment screw arranged on the limit seat.

6. The sheet material transfer device according to claim 5, characterized in that, The traction mechanism includes two groups of synchronous belt drive assemblies respectively arranged on the corresponding first square tubes and a linkage mechanism for driving the two synchronous belt drive assemblies to move synchronously. Each group of synchronous belt drive assemblies includes a rear receiving seat installed at the rear end of the first square tube, a driving wheel rotatably installed on the rear receiving seat, a front receiving seat installed at the front end of the first square tube, and a driven wheel rotatably installed on the front receiving seat. Each driving wheel is connected to the corresponding driven wheel through a synchronous belt, and both ends of the synchronous belt are connected to the slide through a tightener.

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