Plate feeding device

Abstract

The utility model belongs to the technical field of workpiece processing machinery, and particularly relates to a plate feeding device which is characterized in that a rack is provided with a discharging bin, a feeding cavity is formed in the discharging bin, workpieces are stacked in the feeding cavity, the rack is provided with a feeding device, the feeding device comprises a feeding part and a feeding driving part, the feeding part is connected to the rack in a sliding mode, and the feeding driving part is connected to the rack in a sliding mode; the feeding piece is provided with a roller assembly, the feeding driving piece drives the feeding piece to move to push workpieces to be sent out, and rollers make rolling contact with the workpieces to reduce damage to the workpieces. The rack is provided with lifting devices, the lifting devices are distributed on the two opposite sides of the feeding piece in the sliding direction in a one-to-one correspondence mode, the lifting devices are located below the discharging bin, each lifting device comprises a lifting rod and a lifting driving piece, the lifting rods are connected to the rack in a sliding mode, and the lifting driving pieces drive the lifting rods to be used for lifting the workpieces in the feeding cavity. And the roller assemblies are in rolling contact with the workpieces, so that the feeding pieces are prevented from being mutually propped against the workpieces, the abrasion of the workpieces is reduced, and the quality of the workpieces is ensured.

Description

Technical Field

[0001] The technical solution relates to the technical field of workpiece processing machinery, and in particular to a plate feeding device. Background Art

[0002] The plate feeding device is an automated device used to automatically feed the workpiece into the processing equipment for processing. The workpiece automatic feeding machine is used in conjunction with the workpiece processing equipment.

[0003] For example, Chinese patent CN106006051A discloses a novel workpiece feeding mechanism, including a front end bracket, a groove, a lifting device and a workpiece support frame. The lifting device is installed in the groove, the workpiece support frame is arranged on the lifting device, the groove is arranged behind the front end bracket, and a cylinder push rod and a light sensor are also arranged on the top of the front end bracket. The existing workpiece 22 adopts a sheet structure with a specific shape. Several sheet workpieces 22 are stacked in sequence. The bottom sheet of the stacked workpieces 22 is pushed to the loading station for loading, and the stacked workpieces 22 above fall down one by one to realize loading.

[0004] The above-mentioned new workpiece loading mechanism, the current existing workpiece loading method is to push the material from the bottom layer. The workpiece has a large resistance force due to gravity. During the process of the push rod returning after sending the workpiece out, the center of gravity of the workpiece gradually shifts, which can easily cause side tilting, causing the workpiece to be pressed against the edge of the push rod, resulting in greater wear and poor workpiece quality, which needs to be improved. Summary of the invention

[0005] In order to improve the problem of poor workpiece quality caused by easy wear when pushing the workpiece, this technical solution provides a plate feeding device.

[0006] The purpose of this technical solution is achieved in this way:

[0007] A plate feeding device comprises a frame, the frame is provided with a discharge bin, the discharge bin is formed with a feeding cavity, the feeding cavity is used for stacking workpieces, the frame is provided with a feeding device, the feeding device comprises a feeding member and a feeding driving member, the feeding member is slidably connected to the frame, and the feeding driving member drives the feeding member to move to push the workpiece out;

[0008] The frame is provided with a lifting device, and the lifting devices are distributed one by one on the opposite sides of the feeding member along the sliding direction, and the lifting device is located below the discharge bin. The lifting device includes a lifting rod and a lifting driving member, the lifting rod is slidably connected to the frame, and the lifting driving member drives the lifting rod to rise to lift the workpiece in the feeding chamber.

[0009] Through the above technical scheme, when the plate loading device is used normally, the workpieces are stacked layer by layer and placed in the feeding cavity of the discharge bin. After the workpieces are stacked, they are fed downward in the vertical direction based on gravity. The feeding drive of the frame drives the feeding part to slide, so that the feeding part pushes the workpiece at the bottom layer under the feeding cavity forward to realize feeding, thereby ensuring the stability and accuracy of feeding.

[0010] When the feeding piece completes the pushing operation, based on the lifting device being located below the discharge bin, the lifting drive member of the frame drives the lifting rod to slide upward in the vertical direction into the feeding chamber until the stacked workpieces above are pushed upward and lifted to a certain height, so as to avoid the stacked workpieces from pressing against the feeding piece and provide space for the retreat of the feeding piece. The feeding drive member drives the feeding piece to slide backward to the initial position, and the lifting drive member drives the lifting rod to slide downward again to reset the workpiece in preparation for the next feeding, so that the lifting rod and the feeding piece can better coordinate, prevent the feeding piece and the workpiece from conflicting with each other, reduce the wear of the workpiece, and ensure the quality of the workpiece.

[0011] Preferably, a loading groove is provided on the upper end surface of the feeding piece, and the side of the loading groove facing the pushing direction passes through the side wall of the feeding piece. The side of the loading groove opposite to the through end has a pushing surface, and the pushing surface is used to abut against the side wall of the workpiece.

[0012] Through the above technical scheme, the shape of the loading trough is adapted to the workpiece, and based on the side of the top loading trough facing the pushing direction and penetrating the side wall of the feeding piece, the workpiece can be embedded in the loading trough for positioning when it falls, thereby further improving the positioning accuracy. The pushing surface in the loading trough first abuts against the side wall of the workpiece, and the pushing surface is adapted to the workpiece so that the pushing surface and the side wall of the workpiece are accurately abutted to form a stable contact surface, thereby ensuring that the pushing force is evenly distributed so that the workpiece is pushed smoothly and forcefully to the specified position, while effectively avoiding the tilting or deviation of the workpiece, thereby improving the pushing stability.

[0013] Preferably, the frame is provided with a limit block, the limit block is arranged at one end in the sliding direction of the feeding piece, the limit block is provided with a strip hole, the length direction of the strip hole is parallel to the sliding direction of the feeding piece, the frame is provided with a bolt hole, and the limit block is fixed by threading the bolt through the strip hole.

[0014] Through the above technical solution, the feeding piece slides along a preset direction, and the limit block of the frame is fixed along the sliding path of the feeding piece, so that the feeding piece stops when pushing the workpiece against the position of the limit block, thereby improving the accuracy of the operation.

[0015] The limit block is fixed in the bolt hole by a bolt passing through the strip hole and then being threadedly connected. By loosening the bolt, the limit block changes different fixed positions along the length direction of the strip hole, thereby adjusting the limit block to a suitable position corresponding to the sliding direction of the feeding part, thereby improving applicability.

[0016] Preferably, the discharge bin is provided with a positioning groove, and two positioning grooves are provided, and the two positioning grooves are located in the opposite side walls of the feeding cavity along the sliding direction of the feeding piece in a one-to-one correspondence;

[0017] A support section is installed in each of the positioning grooves, and a through hole is opened in the support section. The position of the through hole corresponds to the lifting device one by one for the lifting rod to pass through;

[0018] The opposite side walls of the two support sections are provided with guide grooves, the bottom of the guide grooves is flush with the bottom of the charging groove, and the support sections on both sides cooperate to provide support for the workpiece.

[0019] Through the above technical scheme, positioning grooves are opened on the opposite side walls along the sliding direction of the feeding piece in the material cavity, so that the support sections in the positioning grooves are located on both sides of the feeding piece, and the through holes of the support sections are aligned with the lifting columns so that the lifting columns pass through. Based on the fact that the bottom of the guide groove and the bottom of the loading trough are flush, when the workpiece is embedded in the loading trough, the workpiece can be simultaneously embedded in the guide grooves on both sides and supported against the corresponding bottom of the guide grooves. The two support sections cooperate to jointly support the workpiece and disperse the pressure of the stacked workpieces on the feeding piece, thereby reducing the friction between the lower end surface of the workpiece and the bottom of the loading trough.

[0020] Preferably, the frame is provided with a limit device, and the limit device is located one-to-one below the support section. The limit device includes a limit column and a limit driving component. The limit column is slidably connected to the frame, and the limit driving component drives the limit column to rise and protrude from the upper end surface of the support section.

[0021] Through the above technical solution, after a workpiece is pushed, the limit devices are located one by one under the support section, and the limit driving member drives the limit rod to slide upward in the vertical direction until the limit rod protrudes from the upper end surface of the support section, so as to avoid the feeding member from bringing back the sent workpiece when it retreats, thereby ensuring the normal feeding.

[0022] Preferably, the discharge bin is provided with a limiting portion, which is arranged on the opposite side wall of the feeding cavity along the workpiece insertion direction, and is used to limit the workpiece from escaping, and a gap is left between the limiting portion and the feeding piece for the feeding piece to pass through.

[0023] Through the above technical solution, the limiting part of the discharge bin is located on the opposite side wall along the workpiece insertion direction in the feed cavity, and the limiting part is used to limit the front and rear tipping of the workpieces when they are stacked. A gap is left between the lower end surface of the limiting part and the feeding piece to reduce the friction between the lower end surface of the limiting part and the feeding piece.

[0024] Preferably, the gap distance between the lower end surface of the limiting portion and the bottom of the charging trough is 1.2d-1.8d, where d is the thickness of the corresponding workpiece.

[0025] Through the above technical solution, the gap distance between the lower end surface of the limiting part and the bottom of the charging trough is limited to the range of 1.2d-1.8d, d is the thickness of the corresponding workpiece, based on the fact that the bottom of the charging trough is flush with the bottom of the guide groove, the gap spacing between the limiting part and the bottom of the charging trough and the bottom of the guide groove is just enough for one workpiece to pass through at the same time, avoiding the limiting part from interfering with the workpiece and being unable to discharge the material, and avoiding pushing and driving more than one workpiece to discharge the material, thereby ensuring normal operation.

[0026] Preferably, the feeding member is provided with a mounting groove, in which a rolling assembly is installed, the rolling assembly comprises a rolling spindle and a rolling sleeve arranged on the rolling spindle, and the rolling sleeve is used for contacting with the workpiece to provide rolling guidance.

[0027] Through the above technical solution, multiple rolling assemblies are arranged in sequence in the installation groove. During the process of the feeding part being pushed forward, the rolling assemblies can contact the workpiece one by one, so that the roller sleeve and the workpiece are in rolling contact and guided forward by the rolling assemblies, thereby further reducing the damage to the workpiece surface.

[0028] Preferably, the roller sleeve comprises a plurality of bearings distributed along the axis.

[0029] Through the above technical solution, the roller sleeve is composed of a plurality of bearings, each bearing can share a part of the weight, thereby improving the load-bearing capacity of the entire roller sleeve, and the bearings operate independently of each other, which makes it easy to replace the corresponding bearings when damaged, reducing the difficulty of maintenance and improving practicality and convenience of use.

[0030] Preferably, the feeding piece is also provided with a roller assembly, and the roller assembly is located on the side of the feeding piece close to the frame. The roller assembly includes a roller main shaft and two bearings 2, and the bearings 2 are sleeved on both ends of the roller main shaft. The bearings 2 are coaxially arranged with the roller main shaft. When the feeding piece slides, the bearings 2 contact and roll with the frame for guiding movement.

[0031] Through the above technical solution, when the feeding piece slides on the frame, the two bearings arranged on the roller main shaft contact and roll with the surface of the frame, forming rolling friction with the surface of the frame, playing the role of guiding and moving support, reducing the friction between the feeding piece and the frame, making the feeding piece move more smoothly, and improving work efficiency.

[0032] Compared with the prior art, the technical solution has the following outstanding and beneficial technical effects:

[0033] 1. This technical solution is provided with a discharge bin on the frame, the discharge bin is provided with a feeding cavity, workpieces are stacked in the feeding cavity, the frame is provided with a feeding device, the feeding device includes a feeding member and a feeding driving member, the feeding driving member drives the feeding member to slide, thereby pushing a workpiece located at the bottom layer below the feeding cavity forward to achieve feeding, and ensure feeding stability and accuracy;

[0034] 2. This technical solution is to provide a lifting device on the frame, the lifting device is located below the discharge bin, the lifting device includes a lifting rod and a lifting drive component. When the feeding piece completes the pushing operation, the lifting drive component drives the lifting rod to slide upward into the feeding chamber to push other stacked workpieces to lift, providing space for the feeding piece to retreat, avoiding the stacked workpieces from pressing against the feeding piece, reducing the friction between the feeding piece and the workpiece, reducing the risk of workpiece wear, and ensuring the quality of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0036] Figure 2 It is a partial explosion schematic diagram of this embodiment;

[0037] Figure 3 It is a partial cross-sectional schematic diagram of this embodiment;

[0038] Figure 4 For this embodiment Figure 3 A partial enlarged schematic diagram;

[0039] Figure 5 It is a schematic diagram of the overall structure of the feeding device in the embodiment;

[0040] Figure 6 The feeding device in the embodiment Figure 5 Schematic diagram of local explosion;

[0041] Figure 7 The feeding device in the embodiment Figure 6 Schematic diagram from another perspective;

[0042] Figure 8 It is a schematic diagram of the overall structure of the workpiece in the background technology;

[0043] Fig. 9 This is a schematic diagram of the operating structure after the workpiece is loaded in this embodiment.

[0044] : 1. frame; 2. discharge bin; 3. feeding chamber; 4. feeding device; 41. feeding member; 42. feeding drive member; 5. lifting device; 51. lifting rod; 52. lifting drive member; 6. pushing surface; 7. loading trough; 8. limiting block; 9. strip hole; 10. bolt hole; 11. positioning groove; 12. supporting section; 13. through hole; 14. guide groove; 15. limiting device; 151. limiting column; 152. limiting drive member; 17. limiting part; 18. mounting groove; 19. rolling assembly; 191. rolling spindle; 192. bushing; 20. roller assembly; 201. roller spindle; 202. bearing two; 21. bearing one; 22. workpiece. DETAILED DESCRIPTION

[0045] The specific implementation of the technical solution is further described in detail below with reference to the accompanying drawings.

[0046] Example:

[0047] See also Figure 1 A workpiece 22 loading device includes a frame 1, the frame 1 is provided with a discharge bin 2, the discharge bin 2 is composed of two parts spliced ​​together, the discharge bin 2 is formed with a feeding cavity 3, and the feeding cavity 3 is formed with openings at the upper and lower ends of the discharge bin 2 along the vertical direction, so that a plurality of workpieces 22 can be stacked from the upper opening of the discharge bin 2 into the feeding cavity 3, and fed from the opening below the feeding cavity 3.

[0048] The discharge bin 2 is provided with a limit portion 17, which includes multiple parts. Each limit portion 17 extends into the feed chamber 3. Multiple limit portions 17 are arranged on opposite side walls of the feed chamber 3 along the direction in which the workpiece 22 is placed. Multiple limit portions 17 cooperate to make the cross-sectional area of ​​the feed chamber 3 match the shape of the workpiece 22. The limit portions 17 cooperate to limit the workpieces 22 from detaching from the front and rear sides of the discharge bin 2 and tipping over after being stacked.

[0049] The frame 1 is provided with a feeding device 4, which is located above the frame 1. The feeding device 4 includes a feeding piece 41 and a feeding drive piece 42. One end of the feeding piece 41 extends to the bottom of the discharge bin 2. The upper end surface of the feeding piece 41 corresponding to the position of the feeding cavity 3 is provided with a loading groove 7. The loading groove 7 is adapted to the workpiece 22 so that the workpiece 22 can be embedded in the loading groove 7. The feeding piece 41 is slidably connected relative to the frame 1. The sliding direction of the feeding piece 41 is set along the horizontal direction of the upper end surface of the frame 1. The feeding drive piece 42 can be a motor or a cylinder. The feeding drive piece 42 is located on the side of the feeding piece 41 away from the discharge bin 2. The feeding piece 41 is set on the output shaft of the feeding drive piece 42. The feeding drive piece 42 drives the feeding piece 41 to slide. In this example, a guide rail and a guide groove are set between the feeding piece 41 and the frame 1 to guide the sliding.

[0050] See also Figure 2 and Figure 4 The discharge bin 2 is provided with a positioning groove 11, and there are two positioning grooves 11. The two positioning grooves 11 are located in the opposite side walls of the feeding chamber 3 along the sliding direction of the feeding member 41, and the directions of the two positioning grooves 11 are opposite. The length direction of each positioning groove 11 is parallel to the sliding direction of the feeding member 41. The support sections 12 on both sides are provided with guide grooves 14, and the positions of the guide grooves 14 on both sides are relatively set. The bottom of the guide groove 14 is flush with the bottom of the loading trough 7, so that when the workpiece 22 is embedded in the loading trough 7, the workpiece 22 rests on the bottom of the loading trough 7 and can rest on the bottom of the guide grooves 14 on both sides for support at the same time, and when the feeding member 41 pushes the workpiece 22, the workpiece 22 can be limited to guide and move between the support sections 12 on both sides.

[0051] A gap is left between the lower end surface of the limiting portion 17 and the upper end surface of the feeding member 41, so that the feeding member 41 will not be interfered when sliding through the limiting portion 17. The gap distance between the lower end surface of the limiting portion 17 and the bottom of the loading trough 7 is a, and the value range of a is limited to between 1.2d-1.8d, see Figure 8 workpiece 22, d is the thickness of a corresponding workpiece. In this example, the value of a is 1.5d and d is 1.2mm. At this time, the value of a is 1.8mm. The thickness of a single workpiece 22 is always less than a, so that after the workpiece 22 is embedded in the loading trough 7, the gap size is only large enough for a single workpiece 22 to pass through at the same time.

[0052] See also Figure 2 and Figure 3 The frame 1 is also provided with a lifting device 5, and there are four lifting devices 5, each of which is located below the discharge bin 2, and the four lifting devices 5 are distributed on the opposite sides of the feeding member 41 along the sliding direction in pairs, and each lifting device 5 includes a lifting rod 51 and a lifting driving member 52, and the lifting driving member 52 is installed in the frame 1. The lifting driving member 52 can be a cylinder or a motor, and the lifting rod 51 is arranged on the output shaft of the corresponding lifting driving member 52, and the lifting rod 5 1 is slidably connected to the frame 1, the sliding direction of the lifting rod 51 is perpendicular to the sliding direction of the feeding member 41 along the vertical direction, and the support sections 12 on both sides are penetrated with through holes 13, and the position of each through hole 13 corresponds to the position of the lifting rod 51, so that the lifting rod 51 is embedded in the corresponding through hole 13 and slides along the through hole 13, and the lifting driving member 52 drives the lifting rod 51 to slide up and down, so that the four lifting rods 51 are aligned with the four corners of the workpiece 22 in the feeding chamber 3 and then lifted.

[0053] A limit block 8 is also provided on the frame 1. The limit block 8 is arranged at one end along the sliding path of the feeding piece 41. The limit block 8 is fixed to the upper end surface of the frame 1. The specific fixing method can be to open a strip hole 9 on the limit block 8. The strip hole 9 is a long strip hole. The length direction of the strip hole 9 is parallel to the sliding direction of the feeding piece 41. Two bolt holes 10 are passed through the frame 1. The two bolt holes 10 are spaced apart in the length direction of the strip hole 9. After the position of the strip hole 9 is aligned with the two bolt holes 10, the bolts are passed through the strip hole 9 and then connected to the bolt holes 10 one by one to achieve fixation. Loosening the bolts allows the limit block 8 to adjust to different fixed positions along the length range of the strip hole 9.

[0054] The frame 1 is also provided with a limit device 15, and two limit devices 15 are provided. The two limit devices 15 correspond to the positions of the two support sections 12 one by one. The limit devices 15 are located below the corresponding support sections 12 of the frame 1. Each limit device 15 includes a limit column 151 and a limit drive 152. The limit drive 152 can be a cylinder or a motor. The limit column 151 is arranged on the output axis of the limit drive 152. The limit column 151 is slidably connected relative to the frame 1. The sliding direction of the limit column 151 is In the sliding direction parallel to the lifting rod 51, the limit column 151 passes through the frame 1 and the corresponding support section 12 and then protrudes from the upper end surface of the support section 12. When the feeding member 41 pushes a workpiece 22 to abut against the limit block 8 and the feeding member 41 retreats, the distance between the limit column 151 and the limit block 8 is greater than the size of the workpiece 22. The position driving members on both sides drive the limit column 151 to protrude and slide at the same time, so that the limit column 151 is away from the end surface of one side of the discharge bin 2 and contacts the workpiece 22 to limit the workpiece 22 from being driven back.

[0055] See also Figure 5 and Figure 6 The feeding member 41 has a pushing surface 6, which is arranged on the side wall of the loading trough 7 away from the feeding driving member 42. The shape of the pushing surface 6 is adapted to the shape of the side wall of the workpiece 22, so that when the feeding member 41 moves toward the discharge bin 2, the pushing surface 6 is used to abut against the side wall of the workpiece 22 to push the workpiece 22 to move.

[0056] The feeding piece 41 is provided with a mounting groove 18, in which a rolling assembly 19 is installed. There are multiple rolling assemblies 19, and the distribution direction of the multiple rolling assemblies 19 is arranged along the sliding direction of the feeding piece 41. Each rolling assembly 19 includes a rolling main shaft 191 and a sleeve 192. The sleeve 192 is coaxially arranged on the rolling main shaft 191. In this example, the sleeve 192 includes a plurality of bearings 21, and the plurality of bearings 21 are distributed on the rolling main shaft 191 along the axis. The rotation axis of each bearing 21 is perpendicular to the sliding direction of the lifting rod 51 and the sliding direction of the feeding piece 41. Alternatively, the sleeve 192 can also adopt a structure that is entirely a sleeve.

[0057] See also Figure 7 The feeding piece 41 is also provided with a roller assembly 20, and two roller assemblies 20 are provided. Each roller assembly 20 is located on one side of the feeding piece 41 below the feeding piece 41 and close to the frame 1. The two roller assemblies 20 are respectively arranged at both ends of the feeding piece 41. Each roller assembly 20 includes a roller main shaft 201 and two bearings 202. The two bearings 202 are coaxially arranged at both ends of the roller. The rotation axes of the two bearings 202 are parallel to the rotation axis of the sleeve 192. Several bearings 202 are in contact with the frame 1 and roll for guiding movement.

[0058] See also Figure 8 and Fig. 9 , stack several workpieces 22 in the feeding chamber 3 in sequence, the feeding drive 42 drives the feeding part 41 to slide toward the discharge chamber, the feeding part 41 pushes a workpiece 22 located at the bottom layer to be sent forward, and several bearings 21 are used to contact with other workpieces 22 above for rolling guidance between the driving part and the workpiece 22. When the feeding part 41 completes the pushing operation, the lifting driving part 52 drives the lifting rod 51 to slide upward until the stacked workpiece 22 above is pushed upward to a certain height to avoid the stacked workpiece 22 from pressing against the feeding part 41. The feeding driving part 42 drives the feeding part 41 to slide in the opposite direction, and the lifting driving part 52 drives the lifting rod 51 to slide downward again to reset the workpiece 22 to prepare for the next feeding.

[0059] The specific working process of this program is as follows:

[0060] In the technical solution, workpieces 22 are stacked in the feeding cavity 3 of the discharge bin 2. The workpieces 22 are discharged downward in the vertical direction based on gravity. The workpieces 22 are embedded in the loading trough 7. The feeding drive 42 of the frame 1 drives the feeding member 41 to slide. The pushing surface 6 contacts the workpiece 22, so that the workpiece 22 is pushed through the gap between the lower end surface of the limiting portion 17 and the bottom of the loading trough 7 to realize feeding. In the process of pushing the feeding member 41 forward, the rolling assembly 19 rolls and rubs against the workpiece 22 to reduce the damage to the workpiece surface. When the feeding member 41 completes pushing, the lifting of the frame 1 The driving member 52 drives the lifting rod 51 to slide in the vertical direction toward the feeding chamber 3, and the lifting rod 51 lifts the stacked workpieces 22 to prevent the stacked workpieces 22 from pressing against the feeding member 41, providing space for the feeding member 41 to retreat, and the feeding driving member 42 drives the feeding member 41 to slide in the opposite direction back to the initial position, and the lifting driving member 52 then drives the lifting rod 51 to slide to reset the workpiece 22, so that the lifting rod 51 and the feeding member 41 have better coordination, prevent the feeding member 41 from conflicting with the workpiece 22, reduce the wear of the workpiece 22, and ensure the quality of the workpiece 22.

[0061] The above shows and describes the basic principle and main features of the technical solution and the advantages of the technical solution. The technicians in this industry should understand that the technical solution is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the technical solution. Without departing from the spirit and scope of the technical solution, the technical solution will have various changes and improvements, which fall within the scope of the technical solution to be protected. The scope of protection claimed by the technical solution is defined by the attached claims and their equivalents.

Claims

1. A plate feeding device, comprising a frame (1), characterized in that: The frame (1) is provided with a discharge bin (2), the discharge bin (2) is formed with a feeding cavity (3), the feeding cavity (3) is used for stacking workpieces (22), the frame (1) is provided with a feeding device (4), the feeding device (4) comprises a feeding member (41) and a feeding drive member (42), the feeding member (41) is slidably connected to the frame (1), and the feeding drive member (42) drives the feeding member (41) to move to push the workpiece (22) out; The frame (1) is provided with a lifting device (5), and the lifting devices (5) are distributed one by one on the opposite sides of the feeding member (41) along the sliding direction, and the lifting device (5) is located below the discharge bin (2). The lifting device (5) includes a lifting rod (51) and a lifting driving member (52). The lifting rod (51) is slidably connected to the frame (1), and the lifting driving member (52) drives the lifting rod (51) to rise to lift the workpiece (22) in the feeding chamber (3).

2. The plate material feeding device according to claim 1, characterized in that: The upper end surface of the feeding piece (41) is provided with a loading groove (7), the side of the loading groove (7) facing the pushing direction passes through the side wall of the feeding piece (41), and the side of the loading groove (7) opposite to the through end is provided with a pushing surface (6), and the pushing surface (6) is used to abut against the side wall of the workpiece (22).

3. The plate material feeding device according to claim 1, characterized in that: The frame (1) is provided with a limit block (8), the limit block (8) is arranged at one end of the feeding member (41) in the sliding direction, the limit block (8) is provided with a strip hole (9), the length direction of the strip hole (9) is parallel to the sliding direction of the feeding member (41), the frame (1) is provided with a bolt hole (10), and the limit block (8) is fixed by a bolt passing through the strip hole (9) and then being threadedly connected to the bolt hole (10).

4. The plate material feeding device according to claim 2, characterized in that: The discharge bin (2) is provided with a positioning groove (11), and two positioning grooves (11) are provided, and the two positioning grooves (11) are located in a one-to-one correspondence on opposite side walls of the feeding cavity (3) along the sliding direction of the feeding member (41); A support section (12) is installed in each of the positioning grooves (11), and a through hole (13) is provided in the support section (12). The position of the through hole (13) corresponds to the lifting device (5) one by one for allowing the lifting rod (51) to pass through. The opposite side walls of the two support sections (12) are each provided with a guide groove (14), the bottom of the guide groove (14) being flush with the bottom of the charging groove (7), and the support sections (12) on both sides cooperate to provide support for the workpiece (22).

5. The plate material feeding device according to claim 4, characterized in that: The frame (1) is provided with a limiting device (15), the limiting device (15) is located one-to-one below the supporting section (12), the limiting device (15) comprises a limiting column (151) and a limiting driving member (152), the limiting column (151) is slidably connected to the frame (1), and the limiting driving member (152) drives the limiting column (151) to rise and protrude from the upper end surface of the supporting section (12).

6. The plate material feeding device according to claim 2, characterized in that: The discharge bin (2) is provided with a limiting portion (17), and the limiting portion (17) is arranged on the opposite side wall of the feeding chamber (3) along the direction in which the workpiece (22) is placed, and the limiting portion (17) is used to limit the workpiece (22) from escaping, and a gap is left between the limiting portion (17) and the feeding piece (41) for the feeding piece (41) to pass through.

7. The plate material feeding device according to claim 6, characterized in that: The gap distance between the lower end surface of the limiting portion (17) and the bottom of the charging trough (7) is 1.2d-1.8d, where d is the thickness of the corresponding workpiece (22).

8. The plate material feeding device according to claim 1, characterized in that: The feeding member (41) is provided with a mounting groove (18), a rolling assembly (19) is installed in the mounting groove (18), the rolling assembly (19) comprises a rolling main shaft (191) and a rolling sleeve (192) arranged on the rolling main shaft, and the rolling sleeve (192) is used to contact with the workpiece (22) to provide rolling guidance.

9. The plate material feeding device according to claim 8, characterized in that: The roller sleeve (192) includes a plurality of bearings (21) distributed along the axis.

10. The plate material feeding device according to claim 1, characterized in that: The feeding member (41) is also provided with a roller assembly (20), the roller assembly (20) being located on a side of the feeding member (41) close to the frame (1), the roller assembly (20) comprising a roller main shaft (201) and two bearings (202), the bearings (202) being sleeved at both ends of the roller main shaft (201), the bearings (202) being coaxially arranged with the roller main shaft (201), and when the feeding member (41) slides, the bearings (202) contact and roll with the frame (1) for guiding movement.

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