Plate loading and unloading machine

Abstract

The utility model relates to the technical field of feeding and discharging equipment, in particular to a plate feeding and discharging machine which comprises a machine table and a plate feeding and discharging device, the plate feeding and discharging device comprises a feeding and discharging frame mechanism, a first lifting driving mechanism, a translation driving mechanism, an overturning driving mechanism, a plate suction mechanism and a conveying mechanism, and an avoiding space is formed in the middle of the feeding and discharging frame mechanism. The first lifting driving mechanism and the avoiding space are correspondingly arranged, the translation driving mechanism is in driving connection with the lifting end of the first lifting driving mechanism and located in the avoiding space, the overturning driving mechanism is in driving connection with the translation end of the translation driving mechanism, and one end of the plate suction mechanism is arranged at the overturning end of the overturning driving mechanism; the conveying mechanism is located on the discharging side of the feeding and discharging frame mechanism, an overturning space is formed in the middle of the conveying mechanism, the overturning driving mechanism drives the plate suction mechanism to overturn between the feeding and discharging frame mechanism and the conveying mechanism, and the plate suction mechanism can overturn into the overturning space. The plate feeding and discharging stability is good, the plate feeding quality is improved, and plate damage is not likely to be caused.

Description

TECHNICAL FIELD

[0001] The utility model relates to feeding and discharging equipment technical field especially is a kind of upper and lower plate machine. BACKGROUND

[0002] In the processing and production process of circuit board, sheet metal plate and other plate parts, the plate parts need to be fed, discharged or taken. In the prior art, the plate parts are generally flipped from the rack to the conveying mechanism by a flipping mechanism to realize feeding, or the plate parts on the conveying mechanism are flipped to the rack by the flipping mechanism to realize discharging. In the prior art, the Chinese patent document with application number 202020122641.5 discloses a PCB discharging device, which includes a discharging rack, a conveying unit, a plate suction unit and a flipping unit. The discharging rack includes longitudinal support plates, transverse vertical plates and backrest plates. The conveying unit includes groove-type support blocks, belt conveyors and auxiliary support plates. The longitudinal support plates on both sides of the discharging rack are placed on the belt conveyors. The plate suction unit includes air cylinders, cross plates and a plurality of vacuum nozzles arranged side by side along the cross plates. The flipping unit includes a horizontal shaft, a motor driving the horizontal shaft to rotate, a rotating arm fixed vertically on the horizontal shaft and a hook plate connected to the rotating arm. The patent document separates the first plate on the discharging rack from the remaining PCBs by the plate suction unit, and then the motor of the flipping unit drives the horizontal shaft to rotate. The horizontal shaft rotation drives the hook plate to rotate. The hook plate hooks the first PCB during the flipping process and flips the PCB to be placed on the production line conveyor, thereby realizing the discharging operation. The PCB is flipped by the hook plate and can only be placed on the conveying unit in an inclined manner, which can easily damage the PCB and has poor discharging stability. Therefore, the defect is obvious, and a solution is urgently needed. SUMMARY

[0003] To solve the above technical problems, the purpose of the utility model is to provide an upper and lower plate machine.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The application discloses a board feeding and discharging machine which comprises a machine table and a board feeding and discharging device arranged on the machine table, wherein the board feeding and discharging device comprises a feeding and discharging frame mechanism, a first lifting driving mechanism, a translation driving mechanism, a turnover driving mechanism, a suction plate mechanism and a conveying mechanism; the middle part of the feeding and discharging frame mechanism is provided with an avoiding space; the first lifting driving mechanism is arranged in correspondence with the avoiding space and below the avoiding space; the translation driving mechanism is drivingly connected with the lifting end of the first lifting driving mechanism and located in the avoiding space; the turnover driving mechanism is drivingly connected with the translation end of the translation driving mechanism; one end of the suction plate mechanism is arranged on the turnover end of the turnover driving mechanism; the conveying mechanism is located on the discharging side of the feeding and discharging frame mechanism; the middle part of the conveying mechanism is provided with a turnover space; the turnover driving mechanism is used for driving the suction plate mechanism to reciprocatingly turn over above the feeding and discharging frame mechanism and above the conveying mechanism; and the suction plate mechanism can be turned over into the turnover space.

[0006] Further, the suction plate mechanism comprises a turnover frame drivingly connected with the turnover end of the turnover driving mechanism, a plurality of suction plates arranged on the turnover frame and a translation stroke controller arranged on the turnover frame and electrically connected with the translation driving mechanism.

[0007] Further, the translation stroke controller comprises a fixing sleeve arranged on the turnover frame, a sensor arranged on the middle part of the fixing sleeve, a guide sleeve arranged on the fixing sleeve, a sliding rod slidingly penetrating the inner hole of the guide sleeve, a cap arranged on the inner end of the sliding rod and located in the fixing sleeve, a contact block arranged on the outer end of the sliding rod and located outside the guide sleeve, an elastic member clamped between the contact block and the guide sleeve and a trigger rod arranged on the cap and used for triggering the sensor; the cap is used for abutting against the inner end surface of the guide sleeve; the middle part of the fixing sleeve is provided with a radial hole; the sensing end of the sensor extends into the fixing sleeve through the radial hole; and the sensor is electrically connected with the translation driving mechanism.

[0008] Further, the turnover frame is provided with a sensor.

[0009] Further, the feeding and discharging frame mechanism comprises two roller guide rail groups arranged in parallel on the machine table, a front stopper arranged on the inner end of the roller guide rail groups or / and the machine table and a movable limiting mechanism arranged on the machine table and close to the outer end of the roller guide rail groups; and the avoiding space is formed between the two roller guide rail groups.

[0010] Further, the movable limiting mechanism comprises a fixing base arranged on the machine table, a swing frame rotatably connected with the fixing base, a rubber roller rotatably connected with the free end of the swing frame and a swing driver arranged on the fixing base and used for driving the swing frame to swing reciprocatingly.

[0011] Further, the board feeding and discharging machine further comprises a second lifting driving mechanism arranged on the machine table; and the conveying mechanism is arranged on the lifting end of the second lifting driving mechanism.

[0012] Further, the outer side wall of the machine table is provided with a positioning block or / and a locking mechanism.

[0013] Further, the conveying mechanism comprises a base, two groups of conveying belts arranged in parallel on the base, and a rotating drive module arranged on the base and used for driving rotation of the two groups of conveying belts, and a turnover space is formed between the two groups of conveying belts.

[0014] Further, the number of the up-and-down plate devices is two, and the two up-and-down plate devices are arranged side by side.

[0015] The utility model discloses a beneficial effect: the utility model can be used to go up the board, also can be used to go down the board, in the embodiment, go up the board with the up-and-down plate device is illustrated by example. In practical application, the inclined vertical material rack filled with board parts is placed on the up-and-down material rack mechanism, the translation drive mechanism drives the turnover drive mechanism to be coupled with the plate suction mechanism and move close to the board part carried by the inclined vertical material rack, until the plate suction mechanism sucks the board part tightly, then the first lifting drive mechanism drives the translation drive mechanism to be coupled with the turnover drive mechanism, the plate suction mechanism and the board part that is sucked tightly to rise, make the board part that is sucked tightly separate from the up-and-down material rack mechanism, then the translation drive mechanism drives the turnover drive mechanism to be coupled with the plate suction mechanism and the board part and move close to the conveying mechanism translation to the turnover position, then the turnover drive mechanism drives the plate suction mechanism to be coupled with the board part and overturns the preset angle, and the plate suction mechanism overturns to the turnover space, make the board part overturn from the inclined vertical material rack to the conveying surface of the conveying mechanism, until the board part is parallel to the conveying surface of the conveying mechanism, then the first lifting drive mechanism drives the translation drive mechanism to be coupled with the turnover drive mechanism, the plate suction mechanism and the board part and descend, when the conveying surface of the conveying mechanism supports the board part, the plate suction mechanism releases the suction force to the board part, and the plate suction mechanism continues to descend, until the conveying surface of the conveying mechanism carries the board part and carries out the outward conveying to the board part, to realize the feeding (go up the board) of the board part. In the process of going up the board, the sucked board part is lifted first when taking the board, and then the board part is moved to the turnover position, avoiding the direct movement of the bottom of the board along the inclined vertical material rack and causing the wear of the board, and when placing the board, the board is overturned to be horizontal first, and then the board is placed on the conveying surface of the conveying mechanism, so as to ensure that the board can be placed horizontally, avoid the damage or deformation of the board caused by the inclined placement, and improve the quality and stability of the board. The utility model goes up the board stably, improves the quality of the board, and is not easy to cause the damage of the board. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic diagram of the utility model.

[0017] Figure 2 It is another three-dimensional structure schematic diagram of the utility model from another perspective.

[0018] Figure 3 It is a three-dimensional structure schematic diagram of the first lifting drive mechanism, the translation drive mechanism, the turnover drive mechanism, the plate suction mechanism and the board part of the utility model.

[0019] Figure 4 is a sectional view of the translation stroke controller of the utility model.

[0020] Figure 5 is a perspective structural schematic view of the conveying mechanism, the second lifting driving mechanism, the feeding and discharging frame mechanism, the positioning block and the car locking mechanism of the utility model.

[0021] Figure 6 is a perspective structural schematic view of the movable limiting mechanism of the utility model.

[0022] Explanation of reference signs:

[0023] 1, machine table; 2, up and down plate device; 3, feeding and discharging frame mechanism; 4, first lifting driving mechanism; 5, translation driving mechanism; 6, turnover driving mechanism; 7, plate suction mechanism; 8, conveying mechanism; 9, avoiding space; 10, turnover space; 11, turnover frame; 12, suction disc; 13, translation stroke controller; 14, fixed sleeve; 15, sensor; 16, guide sleeve; 17, sliding rod; 18, cap; 19, abutting block; 20, elastic member; 21, trigger rod; 22, radial hole; 23, inductor; 24, roller guide rail group; 25, front stop block; 26, movable limiting mechanism; 27, fixed seat; 28, swing frame; 29, rubber roller; 30, swing driver; 31, second lifting driving mechanism; 32, positioning block; 33, car locking mechanism; 34, base; 35, conveying belt group; 36, rotating driving module; 37, positioning hole; 38, car locking seat; 39, car locking driver; 40, lock tongue; 41, lock hole; 42, trolley; 43, plate; 44, inclined vertical material rack; 45, turnover seat; 46, turnover shaft; 47, rotating driver. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of those skilled in the art, the utility model is further explained below in combination with examples and drawings, and the content mentioned in the implementation manner is not a limitation of the utility model.

[0025] As Figures 1 to 6The utility model provides a kind of up and down plate machine, it includes machine table 1 and be equipped with in the up and down plate device 2 of machine table 1, up and down plate device 2 includes upper and lower rack mechanism 3, first lifting drive mechanism 4, translation drive mechanism 5, turnover drive mechanism 6, suction plate mechanism 7 and conveying mechanism 8, the middle part of upper and lower rack mechanism 3 is provided with avoiding space 9, first lifting drive mechanism 4 is correspondingly set with avoiding space 9 and is located below avoiding space 9, translation drive mechanism 5 is driven connection with the lifting end of first lifting drive mechanism 4 and is located in avoiding space 9, turnover drive mechanism 6 is driven connection with the translation end of translation drive mechanism 5, one end of suction plate mechanism 7 is equipped in the turnover end of turnover drive mechanism 6, conveying mechanism 8 is located in the discharging side of upper and lower rack mechanism 3, the middle part of conveying mechanism 8 is provided with turnover space 10, turnover drive mechanism 6 is used to drive suction plate mechanism 7 reciprocating turnover above upper and lower rack mechanism 3 and above conveying mechanism 8, suction plate mechanism 7 can be turned over to turnover space 10 inside. Specifically, turnover drive mechanism 6 is located above upper and lower rack mechanism 3. Specifically, board piece 43 can be circuit board or sheet metal plate etc.

[0026] The utility model discloses a board feeding and discharging device, which comprises a feeding and discharging mechanism 3, a first lifting driving mechanism 4, a translation driving mechanism 5, a turnover driving mechanism 6 and a suction plate mechanism 7.

[0027] In the embodiment, the plate suction mechanism 7 comprises a turnover frame 11 connected with the turnover end of the turnover driving mechanism 6, a plurality of suction cups 12 arranged on the turnover frame 11, and a translation stroke controller 13 arranged on the turnover frame 11 and electrically connected with the translation driving mechanism 5 and the first lifting driving mechanism 4. In the actual plate suction process, when the suction cups 12 are opposite to the plate pieces 43 on the inclined rack 44, the translation driving mechanism 5 drives the plate suction mechanism 7 to move close to the plate pieces 43, when the translation stroke controller 13 is in contact with the plate pieces 43, the translation stroke controller 13 feeds back signals to the translation driving mechanism 5 and the first lifting driving mechanism 4, so that the translation driving mechanism 5 stops driving the plate suction mechanism 7 to move close to the plate pieces 43, at this time, the plurality of suction cups 12 are just sucked to the plate pieces 43, then the first lifting driving mechanism 4 drives the translation driving mechanism 5, the turnover driving mechanism 6, the plate suction mechanism 7 and the sucked plate pieces 43 to rise, so that the plate pieces 43 are separated from the inclined rack 44, the translation driving mechanism 5 drives the plate suction mechanism 7 to move to the turnover position, then the turnover driving mechanism 6 drives the turnover frame 11, the plurality of suction cups 12 and the plate pieces 43 to turn over, so that the plate pieces 43 are turned over to above the conveying surface of the conveying mechanism 8, the turnover frame 11 is turned over to the turnover space 10, until the plate pieces 43 are parallel to the conveying surface of the conveying mechanism 8.

[0028] In the embodiment, the translation stroke controller 13 comprises a fixed sleeve 14 arranged on the turnover frame 11, a sensor 15 arranged on the middle part of the fixed sleeve 14, a guide sleeve 16 arranged on the fixed sleeve 14, a sliding rod 17 slidingly penetrating the inner hole of the guide sleeve 16, a cap 18 arranged on the inner end of the sliding rod 17 and located in the fixed sleeve 14, a contact block 19 arranged on the outer end of the sliding rod 17 and located outside the guide sleeve 16, an elastic member 20 clamped between the contact block 19 and the guide sleeve 16, and a trigger rod 21 arranged on the cap 18, the cap 18 is used to contact the inner end surface of the guide sleeve 16, the middle part of the fixed sleeve 14 is provided with a radial hole 22, the sensing end of the sensor 15 extends into the fixed sleeve 14 through the radial hole 22, the trigger rod 21 is used to trigger the sensor 15, and the sensor 15 is electrically connected with the translation driving mechanism 5; specifically, in the normal state, the contact block 19 extends out of the suction surface formed by the plurality of suction cups 12; the elastic member 20 is a spring, the spring is sleeved on the outside of the sliding rod 17, one end of the spring is arranged in the mounting hole, and the other end of the spring is in contact with the contact block 19.

[0029] In actual application, at the beginning, the elastic member 20 is in the stretched state, the trigger rod 21 is away from the sensor 15, and the cap 18 is in contact with the end surface of the guide sleeve 16. As the suction plate mechanism 7 moves close to the plate 43, the contact block 19 will first contact the plate 43, and the plate 43 will gradually press the contact block 19, so that the contact block 19 compresses the elastic member 20, thereby causing the sliding rod 17 to slide relative to the guide sleeve 16, until the trigger rod 21 on the sliding rod 17 triggers the sensor 15, the sensor 15 feeds back a signal to the translational driving mechanism 5, so that the translational driving mechanism 5 stops driving the suction plate mechanism 7 to move close to the plate 43, at this time the suction plate 12 just tightly sucks the plate 43. The translational stroke controller 13 controls the translational stroke of the suction plate mechanism 7 when taking the plate, the control precision is high, the moving precision of the suction plate mechanism 7 is high, and the suction plate mechanism 7 will not have a hard impact collision with the plate 43, thereby protecting the suction plate mechanism 7 and the plate 43.

[0030] In the embodiment, the turnover frame 11 is provided with a sensor 23. The sensor 23 is used to sense whether there is a plate 43. When the sensor 23 senses that there is a plate 43, the turnover driving mechanism 6 normally drives the turnover frame 11 and the plurality of suction plates 12 to turn over, so as to realize the turnover of the plate 43. When the sensor 23 cannot sense that there is a plate 43, the sensor 23 feeds back a signal to the control system of the machine, so that the control system issues an alarm to remind the operator that there is no plate 43 at this time.

[0031] In the embodiment, the feeding and discharging frame mechanism 3 includes two roller guide rail groups 24 which are arranged in parallel on the machine table 1, a front stop 25 which is arranged at the inner end of the roller guide rail groups 24 or / and the machine table 1, and a movable limiting mechanism 26 which is arranged on the machine table 1 and close to the outer end of the roller guide rail groups 24, and the avoiding space 9 is formed between the two roller guide rail groups 24.

[0032] In actual application, the inclined vertical rack 44 filled with the plates 43 is placed above the two roller guide rail groups 24, and the inclined vertical rack 44 can slide on the two roller guide rail groups 24 until the front end of the inclined vertical rack 44 contacts the front stop 25, and then the movable end of the movable limiting mechanism 26 contacts the rear end of the inclined vertical rack 44, so as to limit the front and rear positions of the inclined vertical rack 44 on the roller guide rail groups 24, thereby ensuring the position precision and stability of the inclined vertical rack 44 on the roller guide rail groups 24.

[0033] In the embodiment, the movable limiting mechanism 26 is located in the avoiding space 9, and the movable limiting mechanism 26 includes a fixed seat 27 arranged on the machine table 1, a swing frame 28 rotationally connected to the fixed seat 27, a rubber roller 29 rotationally connected to the free end of the swing frame 28, and a swing driver 30 arranged on the fixed seat 27 and used to drive the swing frame 28 to swing back and forth. Specifically, the swing driver 30 can be a pneumatic cylinder, the cylinder body of the pneumatic cylinder is hinged to the fixed seat 27, and the piston rod of the pneumatic cylinder is hinged to the swing frame 28.

[0034] At the beginning, the rubber roller 29 is below the top surface of the roller rail set 24, when the front end of the inclined rack 44 abuts against the front stopper 25, the swing driver 30 drives the swing frame 28 to swing, so that the swing frame 28 drives the rubber roller 29 to swing upward until the rubber roller 29 abuts against the rear end surface of the inclined rack 44, the front and rear positions of the inclined rack 44 are limited by the front stopper 25 and the rubber roller 29.

[0035] In the embodiment, the up-and-down machine further comprises a second lifting driving mechanism 31 arranged on the machine table 1, and the conveying mechanism 8 is arranged on the lifting end of the second lifting driving mechanism 31. In actual application, when the conveying mechanism 8 conveys the plate 43 to the external carrier, the external carrier is located in the turnover space 10, and the external carrier is located below the plate 43, at this time, the second lifting driving mechanism 31 drives the conveying mechanism 8 to descend until the plate 43 is placed on the external carrier, and then the external carrier conveys the plate 43 to the processing equipment. In addition, when the external carrier conveys the plate 43 above the conveying surface of the conveying mechanism 8, the second lifting driving mechanism 31 drives the conveying mechanism 8 to ascend until the conveying surface of the conveying mechanism 8 holds up the plate 43, and then the conveying mechanism 8 can output the plate 43.

[0036] In the embodiment, the outer side wall of the machine table 1 is arranged with a positioning block 32 and / or a locking mechanism 33. In actual application, the trolley or AGV trolley and the like trolley 42 conveys the inclined rack 44 to the feeding side of the up-and-down rack mechanism 3, at this time, the positioning block 32 positions the trolley 42, and the locking mechanism 33 locks the trolley 42, so as to ensure the position accuracy and stability of the trolley 42 and the up-and-down rack, and facilitate the reciprocating movement of the inclined rack 44 between the trolley 42 and the up-and-down rack mechanism 3.

[0037] Specifically, the positioning block 32 is provided with a positioning hole 37, the locking mechanism 33 comprises a locking seat 38 arranged on the machine table 1, a locking driver 39 arranged on the machine table 1 or the locking seat 38, and a locking tongue 40 arranged on the driving end of the locking driver 39, the locking seat 38 is provided with a locking hole 41, the locking tongue 40 is in sliding connection with the locking seat 38, and the locking tongue 40 can extend into the locking hole 41; specifically, the locking driver 39 can adopt a pneumatic cylinder.

[0038] In actual application, when the positioning block 32 positions the trolley 42, the positioning pin of the trolley 42 is inserted into the positioning hole 37 of the positioning block 32 to position the trolley 42, the locking ring of the trolley 42 is inserted into the locking hole 41, the locking driver 39 drives the locking tongue 40 to extend into the locking hole 41, and the locking tongue 40 passes through the locking ring to lock the trolley 42.

[0039] In the embodiment, the conveying mechanism 8 comprises a base 34, two sets of conveying belts 35 arranged in parallel on the base 34, and a rotating driving module 36 arranged on the base 34 and used for driving the rotation of the conveying belts of the two sets of conveying belts 35, and a turnover space 10 is formed between the two sets of conveying belts 35. In actual application, the rotating driving module 36 drives the synchronous rotation of the conveying belts of the two sets of conveying belts 35 to convey the plate 43.

[0040] Specifically, the discharge ends of the two sets of conveying belts 35 are cantilevered out of the machine table 1. With this structure, the conveying belt 35 can be connected with external equipment.

[0041] In the embodiment, the number of the upper and lower plate devices 2 is two, and the two upper and lower plate devices 2 are arranged side by side.

[0042] In actual application, the rotating driver 47 drives the turnover shaft 46 to rotate, and the rotating turnover shaft 46 drives the suction plate mechanism 7 to rotate. By controlling the reciprocating rotation angle of the turnover shaft 46, the suction plate mechanism 7 can reciprocate within a fixed angle range.

[0043] All the technical features in the embodiment can be freely combined according to actual needs.

[0044] The above embodiment is a preferred implementation scheme of the present application, and the present application can also be implemented in other ways. Any obvious replacement without departing from the technical scheme concept is within the protection scope of the present application.

Claims

1. A board stacker, characterized by comprising: The device comprises a machine table (1) and an upper and lower plate device (2) installed on the machine table (1), the upper and lower plate device (2) comprises an upper and lower rack mechanism (3), a first lifting driving mechanism (4), a translation driving mechanism (5), a turnover driving mechanism (6), a suction plate mechanism (7) and a conveying mechanism (8), the middle part of the upper and lower rack mechanism (3) is provided with an avoiding space (9), the first lifting driving mechanism (4) is correspondingly arranged below the avoiding space (9), the translation driving mechanism (5) is drivingly connected with the lifting end of the first lifting driving mechanism (4) and located in the avoiding space (9), the turnover driving mechanism (6) is drivingly connected with the translation end of the translation driving mechanism (5), one end of the suction plate mechanism (7) is installed on the turnover end of the turnover driving mechanism (6), the conveying mechanism (8) is located on the discharging side of the upper and lower rack mechanism (3), and the middle part of the conveying mechanism (8) is provided with a turnover space (10), the turnover driving mechanism (6) is used for driving the suction plate mechanism (7) to reciprocally turn over above the upper and lower rack mechanism (3) and above the conveying mechanism (8), and the suction plate mechanism (7) can turn over into the turnover space (10).

2. The up and down sheet machine according to claim 1, characterized in that: The suction plate mechanism (7) comprises a turnover rack (11) drivingly connected with the turnover end of the turnover driving mechanism (6), a plurality of suction discs (12) installed on the turnover rack (11) and a translation stroke controller (13) installed on the turnover rack (11), and the translation stroke controller (13) is electrically connected with the translation driving mechanism (5).

3. The up and down sheet machine according to claim 2, characterized in that: The translation stroke controller (13) comprises a fixed sleeve (14) installed on the turnover rack (11), a sensor (15) installed on the middle part of the fixed sleeve (14), a guide sleeve (16) installed on the fixed sleeve (14), a sliding rod (17) slidingly penetrating the inner hole of the guide sleeve (16), a cap (18) provided on the inner end of the sliding rod (17) and located in the fixed sleeve (14), a contact block (19) installed on the outer end of the sliding rod (17) and located outside the guide sleeve (16), an elastic member (20) clamped between the contact block (19) and the guide sleeve (16), and a trigger rod (21) installed on the cap (18), the cap (18) is used for abutting against the inner end surface of the guide sleeve (16), the middle part of the fixed sleeve (14) is provided with a radial hole (22), the sensing end of the sensor (15) extends into the fixed sleeve (14) through the radial hole (22), the trigger rod (21) is used for triggering the sensor (15), and the sensor (15) is electrically connected with the translation driving mechanism (5).

4. The up and down sheet machine according to claim 2, characterized in that: The turnover rack (11) is provided with a sensor (23).

5. The up and down sheet machine according to claim 1, characterized in that: The upper and lower rack mechanism (3) comprises two roller guide rail groups (24) installed in parallel on the machine table (1), a front stop block (25) installed on the inner end of the roller guide rail group (24) or / and the machine table (1), and a movable limiting mechanism (26) installed on the machine table (1) and close to the outer end of the roller guide rail group (24), and the avoiding space (9) is formed between the two roller guide rail groups (24).

6. The up and down sheet machine according to claim 5, characterized in that: The activity limiting mechanism (26) comprises a fixed seat (27) arranged on the machine table (1), a swing frame (28) rotatably connected to the fixed seat (27), a rubber roller (29) rotatably connected to a free end of the swing frame (28), and a swing driver (30) arranged on the fixed seat (27) and used for driving the swing frame (28) to swing back and forth.

7. The up and down sheet machine according to claim 1, characterized in that: The up-and-down plate machine further comprises a second lifting driving mechanism (31) arranged on the machine table (1), and the conveying mechanism (8) is arranged on a lifting end of the second lifting driving mechanism (31).

8. The up and down sheet machine according to claim 1, characterized in that: The outer side wall of the machine table (1) is provided with a positioning block (32) or / and a car locking mechanism (33).

9. The up and down sheet machine according to claim 1, characterized in that: The conveying mechanism (8) comprises a base (34), two groups of conveying belt groups (35) arranged in parallel on the base (34), and a rotation driving module (36) arranged on the base (34) and used for driving the rotation of the two groups of conveying belt groups (35), and a turnover space (10) is formed between the two groups of conveying belt groups (35).

10. The up and down sheet machine according to claim 1, characterized in that: The number of the up-and-down plate devices (2) is two, and the two up-and-down plate devices (2) are arranged side by side.

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