Workpiece temporary storage trolley

Abstract

The utility model relates to the technical field of material transfer devices, in particular to a workpiece temporary storage trolley which comprises a trolley body, a jacking device installed on the trolley body, a temporary storage device installed at the driving end of the jacking device and an extending device extending outwards from the side face of the trolley body. The extending device is provided with a conveying mechanism for conveying the trays, the jacking device conducts jacking and moving operation on the temporary storage devices in the vertical direction, the multiple temporary storage mechanisms are in butt joint with the conveying mechanism, and therefore the trays are conveyed. In conclusion, through the integrated design, the efficient conveying mechanism and the flexible adaptability, the workpiece transferring efficiency of an automatic production workshop is remarkably improved, the operation cost is reduced, the production safety is improved, and remarkable economic benefits and social benefits are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to material transfer device's technical field especially is a workpiece buffer trolley. BACKGROUND

[0002] In modern automated production workshop, efficient, accurate transfer of workpiece is the key link of improving production efficiency. At present, the commonly used workpiece transfer mode mainly depends on the tray as the bearing unit, and is carried through the moving trolley. However, the prior art has significant deficiencies in the integration and efficiency of workpiece transfer, which is specifically shown as follows:

[0003] Transportation capacity separation: the traditional moving trolley usually only has simple tray loading and moving function, lacks integrated transport capacity. This means that after the moving trolley reaches the designated position, it still needs to rely on additional transport equipment (such as roller line, belt conveyor, mechanical arm, etc.) to complete the transfer between the tray and the target device. This separated transport process not only increases the process steps, but also easily causes workpiece positioning error.

[0004] Equipment redundancy and cost increase: in order to realize complete workpiece transfer, enterprises have to purchase and maintain multiple transport equipment, which significantly increases equipment investment cost, maintenance cost and floor area. In addition, the multi-device collaborative work also increases the complexity of the control system and improves the integration difficulty.

[0005] Efficiency bottleneck: the connection between multiple transport equipment often has efficiency bottleneck. For example, the grabbing speed of the mechanical arm, the transport speed of the roller line and the moving speed of the moving trolley are difficult to perfectly match, which limits the overall transport efficiency and affects the production rhythm.

[0006] Therefore, it is necessary to improve the existing moving trolley. UTILITY MODEL CONTENT

[0007] The utility model aims at providing a technical scheme that can solve the above problems.

[0008] The utility model provides a workpiece buffer trolley, which comprises a vehicle body, a jacking device installed on the vehicle body, a buffer device installed on the driving end of the jacking device, and an extension device extending outward from the side surface of the vehicle body, the buffer device is provided with a plurality of buffer mechanisms for storing trays, the extension device is provided with a conveying mechanism for conveying trays, and the jacking device performs vertical jacking and moving operation on the buffer device, so that the plurality of buffer mechanisms are respectively connected with the conveying mechanism, thereby conveying the trays.

[0009] Further, the extension device is also provided with a transfer mechanism, one end of which is detachably connected to the conveying mechanism, and the other end is detachably connected to the buffer mechanism, so as to synchronously drive the buffer mechanism and the conveying mechanism, and make them run synchronously, and then synchronously convey the tray.

[0010] Further, the extension device is also provided with an extension support, the conveying mechanism is provided with a conveying motor fixed to the extension support, a conveying synchronous wheel rotatably connected to the extension support, and a conveying synchronous belt sleeved on the conveying synchronous wheel, and the conveying synchronous belt is also connected to the output end of the conveying motor, so that the conveying motor is driven to rotate, and the conveying synchronous belt is driven to rotate synchronously, and the tray placed on the conveying synchronous belt is conveyed.

[0011] Further, the transfer mechanism is provided with a first air cylinder, a gear frame and a transfer gear, the first air cylinder is installed on the extension support, the gear frame is installed on the slide table end of the first air cylinder, and the transfer gear is rotatably connected to the gear frame; the conveying mechanism is also provided with a conveying gear, the conveying gear is connected to the conveying synchronous wheel, and one side of the transfer gear is detachably meshed with the conveying gear, and the other side is detachably connected to the buffer mechanism.

[0012] Further, the transfer mechanism is also provided with a second air cylinder, the second air cylinder is installed on the extension support, and the first air cylinder is installed on the slide table end of the second air cylinder.

[0013] Further, the buffer mechanism is provided with a buffer synchronous wheel rotatably connected to the buffer device, a buffer synchronous belt sleeved on the buffer synchronous wheel, and a buffer gear connected to the buffer synchronous wheel, and the buffer gear is detachably meshed with the transfer gear.

[0014] Further, the buffer device is provided with a buffer support, the buffer support is installed on the driving end of the jacking device, and is driven by the jacking device to move vertically upward; a plurality of buffer mechanisms are uniformly installed on the buffer support and move vertically upward synchronously with the buffer support.

[0015] Further, the buffer device is also provided with a limiting mechanism, the limiting mechanism is installed on one end of the buffer support close to the extension device, and is used for limiting the tray; the extension device is also provided with an unlocking protrusion, the unlocking protrusion is installed on one end of the extension support close to the buffer device, and is used for unlocking the limiting mechanism.

[0016] Further, the limiting mechanism is provided with a limiting support, a limiting spring and an auxiliary wheel, the limiting support is slidingly connected to the buffer support, one end of the limiting support extends to the inner side of the buffer device and performs limiting blocking operation on the tray, the other end of the limiting support extends to the outer side of the buffer device and is provided with the auxiliary wheel, one end of the limiting spring is connected to the limiting support, the other end of the limiting spring is connected to the buffer support, and the elastic force of the limiting spring drives the limiting support to keep the limiting blocking operation on the tray, and the auxiliary wheel and the unlocking protrusion are matched with each other to release the limiting blocking operation of the limiting support on the tray.

[0017] Further, the jacking device is provided with a jacking motor, a jacking synchronous belt, a jacking synchronous wheel, a jacking screw and a jacking nut, the jacking synchronous belt is respectively drivingly connected to the jacking synchronous wheel and the output shaft of the jacking motor, the jacking screw is rotationally connected to the vehicle body, the jacking nut is fixedly connected to the buffer device and matched with the jacking screw to form a ball screw transmission system, and the jacking synchronous wheel is drivingly connected to the jacking screw.

[0018] Compared with the prior art, the workpiece buffer trolley has the following beneficial effects:

[0019] 1. High integration and simplified process: the buffer, movement and conveying are integrated by integrating the extension device on the mobile trolley.

[0020] 2. Reduce cost and save space: due to the reduction of dependence on other conveying equipment, the device procurement cost and maintenance cost are greatly reduced.

[0021] 3. Improve efficiency and optimize the beat: the synchronous transmission transfer mechanism ensures that the buffer mechanism and the conveying mechanism operate synchronously to realize the stable and rapid transfer of the tray.

[0022] 4. Flexible adaptation and improved flexibility: the extension device can be flexibly connected with different types of external equipment or installed through the supporting rod, and has high adaptability.

[0023] Therefore, the workpiece buffer trolley of the utility model significantly improves the workpiece transfer efficiency of the automatic production workshop, reduces the operating cost, improves the production safety, has significant economic benefits and social benefits.

[0024] Additional aspects and advantages of the utility model will be partially given in the following description, some will become apparent from the following description, or will be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0026] Figure 1 is a schematic structural view of the whole of the present application;

[0027] Figure 2 is a schematic structural view of the taking and placing window and the tray of the present application;

[0028] Figure 3 is a schematic structural view of the buffer device and the extension device of the present application;

[0029] Figure 4 is a schematic structural view of the jacking device and the buffer device of the present application;

[0030] Figure 5 is a schematic structural view of the conveying mechanism and the transfer mechanism of the present application;

[0031] Figure 6 is a schematic structural view of the transfer gear transmission connection to the conveying gear and the buffer gear of the present application;

[0032] Figure 7 is a schematic structural view of the Figure 6 partial enlarged structure of the middle A of the present application;

[0033] Figure 8 is a schematic structural view of the transfer gear disengaging from the conveying gear and the buffer gear of the present application;

[0034] Figure 9 is a schematic structural view of the Figure 8 partial enlarged structure of the middle B of the present application.

[0035] The reference signs and names in the drawings are as follows:

[0036] 10 car body; 11 tray; 12 pick-up window; 13 support rod; 14 drive shaft; 15 synchronous shaft; 20 buffer device; 21 buffer support; 22 buffer bottom plate; 23 buffer side plate; 24 buffer mechanism; 25 buffer synchronous wheel; 26 buffer synchronous belt; 27 buffer gear; 30 limiting mechanism; 31 limiting support; 32 buffer cushion; 33 auxiliary wheel; 40 jacking device; 41 jacking motor; 42 jacking synchronous belt; 43 jacking synchronous wheel; 44 jacking screw; 45 jacking nut; 46 cylindrical shaft; 47 linear bearing; 50 extension device; 51 extension support; 52 unlocking bump; 53 conveying mechanism; 54 conveying motor; 55 conveying synchronous wheel; 56 conveying synchronous belt; 57 conveying gear; 60 transfer mechanism; 61 first air cylinder; 62 gear frame; 63 transfer gear; 64 second air cylinder. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0038] Please refer to Figures 1 to 9 In the embodiments of the present application, a workpiece buffer trolley comprises a car body 10, a jacking device 40 mounted on the car body 10, a buffer device 20 mounted on the driving end of the jacking device 40, and an extension device 50 extending outward from the side of the car body 10. The buffer device 20 is provided with a plurality of buffer mechanisms 24 for storing trays 11, and the extension device 50 is provided with a conveying mechanism 53 for conveying the trays 11. The jacking device 40 performs vertical jacking movement operation on the buffer device 20, so that the plurality of buffer mechanisms 24 are respectively connected with the conveying mechanism 53, thereby conveying the trays 11.

[0039] Specifically, in an automated production workshop, it is often necessary to transfer workpieces. Usually, trays 11 are used to load and unload workpieces, and mobile trolleys are used to load and move the trays 11. The traditional mobile trolley only has the functions of loading and moving the trays 11, and does not have the conveying function. Therefore, after the mobile trolley loads the trays 11 and moves to the required position, it still needs to rely on other conveying equipment, such as translation equipment, grabbing equipment or mechanical arms, to transfer the trays 11 to the target equipment, or to transfer the trays 11 from the external equipment to the mobile trolley. This also leads to a relatively complex operation and conveying process of the trays 11, and increases the investment cost of the conveying equipment, which is not conducive to the efficient and low-cost operation of the factory.

[0040] The present patent sets the extension device 50 outwardly on the side of the vehicle body 10, so that it can carry out the conveying operation of the tray 11, and make the buffer trolley directly convey the tray 11 into the external equipment, or convey the tray 11 from the external equipment into the buffer trolley. That is, it reduces the investment of other conveying equipment, and improves the conveying efficiency of the whole tray 11.

[0041] In addition, the extension device 50 can be directly installed on the rack of the external equipment, so that the buffer trolley becomes part of the external equipment; or it can be directly installed on the side of the buffer trolley using the support rod 13, and the tray 11 is conveyed through the feeding and discharging window of the external equipment.

[0042] As shown in Figure 2 and Figure 3 , preferably, the extension device 50 is also provided with a transfer mechanism 60, one end of which is connected to the conveying mechanism 53 in a detachable manner, and the other end is connected to the buffer mechanism 24 in a detachable manner, so that the buffer mechanism 24 and the conveying mechanism 53 are synchronously driven, and the tray 11 is synchronously conveyed.

[0043] Specifically, in order to facilitate the synchronous conveying of the tray 11, it is preferred that the transfer mechanism 60 is provided between the conveying mechanism 53 and the buffer mechanism 24, and the synchronous transmission is realized by the transfer mechanism 60. Since the buffer device 20 is provided with a plurality of buffer mechanisms 24, the transfer mechanism 60 needs to be connected to different buffer mechanisms 24 respectively, so the transmission connection between the transfer mechanism 60 and the buffer mechanism 24 needs to be detachable, so that different buffer mechanisms 24 can move vertically under the drive of the jacking device 40, and form corresponding transmission connection with the transfer mechanism 60, and then complete the synchronous conveying of the tray 11 on different buffer mechanisms 24.

[0044] As shown in Figure 5 and Figure 6 , preferably, the extension device 50 is also provided with an extension bracket 51, the conveying mechanism 53 is provided with a conveying motor 54 fixed to the extension bracket 51, a conveying synchronous wheel 55 rotatably connected to the extension bracket 51, and a conveying synchronous belt 56 sleeved on the conveying synchronous wheel 55, the conveying synchronous belt 56 is also connected to the output end of the conveying motor 54, so that the conveying motor 54 drives the conveying synchronous belt 56 to move synchronously, and the tray 11 placed on the conveying synchronous belt 56 is conveyed.

[0045] Specifically, in order to convey the tray 11, it is preferred to set up a synchronous conveying system composed of synchronous wheel and synchronous belt, and the synchronous movement of the conveying synchronous belt 56 and the tray 11 is realized by the driving power provided by the conveying motor 54.

[0046] Secondly, in order to smoothly transport the tray 11, preferably, two sets of the synchronous conveying belts 56 and the synchronous conveying wheels 55 are arranged on both sides of the extension support 51, and the rotation power of the conveying motor 54 is evenly transmitted to the two sets of the synchronous conveying systems through the driving shaft 14, so that the synchronous conveying belts 56 on both sides simultaneously transport the two sides of the tray 11.

[0047] As shown in Figures 7 to 9 Preferably, the transfer mechanism 60 is provided with the first cylinder 61, the gear frame 62 and the transfer gear 63, the first cylinder 61 is installed on the extension support 51, the gear frame 62 is installed on the slide end of the first cylinder 61, and the transfer gear 63 is rotatably connected to the gear frame 62; the conveying mechanism 53 is also provided with the conveying gear 57, the conveying gear 57 is drivingly connected to the synchronous conveying wheel 55, one side of the transfer gear 63 is detachably meshingly connected to the conveying gear 57, and the other side is detachably drivingly connected to the buffering mechanism 24.

[0048] Specifically, the size of the transfer gear 63 is preferably greater than that of the conveying gear 57, and under the driving of the first cylinder 61, the transfer gear 63 is detachably drivingly connected to the conveying gear 57 and the buffering mechanism 24, so as to transmit the rotation power of the conveying gear 57 to the buffering mechanism 24, and the tray 11 can be synchronously transported between the buffering mechanism 24 and the conveying mechanism 53.

[0049] Secondly, when the conveying motor 54 operates, it can drive the synchronous conveying belts 56 to synchronously operate, and the synchronous conveying belts 56 can drive the synchronous conveying wheels 55 to synchronously rotate, so that the rotating synchronous conveying wheels 55 can drive the meshingly connected transfer gear 63 to rotate. Then, the rotation power is transmitted to the buffering mechanism 24 through the transfer gear 63, so as to realize the synchronous conveying operation of the tray 11.

[0050] Thirdly, when the jacking device 40 jacks the buffering device 20 to move to switch different buffering mechanisms 24, the first cylinder 61 can be used to change the position of the transfer gear 63, so that the driving connection between the transfer gear 63, the conveying gear 57 and the buffering mechanism 24 can be separated, thereby avoiding affecting the movement and replacement between different buffering mechanisms 24. Therefore, the first cylinder 61 is preferably arranged to drive the transfer gear 63 to move in a direction perpendicular to the axial direction of the transfer gear 63, so that the transfer gear 63 can be separated from the meshing connection.

[0051] As shown in Figures 7 to 9 Preferably, the transfer mechanism 60 is also provided with the second cylinder 64, the second cylinder 64 is installed on the extension support 51, and the first cylinder 61 is installed on the slide end of the second cylinder 64.

[0052] Specifically, the first cylinder 61 moves the transfer gear 63 in the direction perpendicular to the axial direction of the transfer gear 63, and thus can also interfere with the vertical movement stroke of the buffer mechanism 24. Therefore, the second cylinder 64 is arranged to move the transfer gear 63 in the direction perpendicular to the axial direction of the transfer gear 63, so that the transfer gear 63 changes the position in the transverse direction to avoid the buffer gear 27 of the buffer mechanism 24, and the buffer mechanism 24 can realize normal vertical movement.

[0053] Secondly, the first cylinder 61 and the second cylinder 64 are preferably arranged as a guide rail and a sliding table combined pneumatic sliding table cylinder, which enhances the movement accuracy of the transfer gear 63; and are arranged as a double piston rod structure, which further enhances the stability of the transfer gear 63.

[0054] As shown in Figures 4 to 9 Preferably, the buffer mechanism 24 is provided with a buffer synchronous wheel 25 rotatably connected to the buffer device 20, a buffer synchronous belt 26 sleeved on the buffer synchronous wheel 25, and a buffer gear 27 drivingly connected to the buffer synchronous wheel 25, and the buffer gear 27 and the transfer gear 63 are in separable meshing connection.

[0055] Specifically, in this way, the transfer gear 63 drives the buffer gear 27 to rotate synchronously, and then drives the buffer synchronous wheel 25 and the buffer synchronous belt 26 to rotate synchronously, so that the tray 11 placed on the buffer synchronous belt 26 can move synchronously with the buffer synchronous belt 26. In order to save the driving device for driving the operation of the buffer mechanism 24, preferably, the transfer gear 63 and the buffer gear 27 are in separable meshing connection, so that the rotation power of the conveying motor 54 can be transmitted to the buffer gear 27 through the conveying synchronous belt 56, the conveying synchronous wheel 55, the conveying gear 57 and the transfer gear 63, and then the buffer gear 27 is driven to rotate, and then the buffer synchronous wheel 25 and the buffer synchronous belt 26 are driven to start rotating, so as to realize synchronous conveying operation of the tray 11.

[0056] Secondly, in order to stably convey the tray 11, preferably, two groups of buffer synchronous belts 26, buffer synchronous wheels 25 and buffer gears 27 are arranged on both sides of the buffer support 21, and two groups of conveying synchronous belts 56, conveying synchronous wheels 55 and conveying gears 57 are arranged on both sides of the extension support 51, and the transfer mechanism 60 is also arranged as two groups, and the transfer gears 63 of the two groups of transfer mechanisms 60 are in separable meshing connection with the two groups of buffer gears 27 and the two groups of conveying gears 57, so that the rotation power of the conveying motor 54 is synchronously transmitted to the two groups of buffer gears 27, buffer synchronous wheels 25 and buffer synchronous belts 26, and the buffer synchronous belt 26 and the conveying synchronous belt 56 can rotate synchronously, so as to stably and synchronously convey the tray 11.

[0057] In addition, the two sets of conveying gears 57 and the two sets of buffering gears 27 can be connected by the synchronizing shaft 15, so that the two sets of gears can rotate synchronously.

[0058] As shown in the drawings, preferably, the buffering device 20 is provided with a buffering support 21, which is installed at the driving end of the jacking device 40 and is vertically moved by the jacking device 40. Figure 4

[0059] Specifically, the buffering support 21 is formed by a buffering bottom plate 22 and two buffering side plates 23, and the two buffering side plates 23 are spaced apart from each other to form a vertical space for installing the buffering mechanism 24. One side of the vertical space is connected to the tray 11 taking and placing window 12 arranged on one side of the vehicle body 10, and the other side of the vertical space is connected to the conveying mechanism 53 of the extending device 50, so that the tray 11 can enter or exit the conveying mechanism 53.

[0060] As shown in the drawings, preferably, the buffering device 20 is further provided with a limiting mechanism 30, which is installed at one end of the buffering support 21 close to the extending device 50, and is used for limiting the tray 11. The extending device 50 is further provided with an unlocking protrusion 52, which is installed at one end of the extending support 51 close to the buffering device 20, and is used for unlocking the limiting mechanism 30. Figures 3 to 4

[0061] Specifically, in order to prevent the tray 11 stored in the buffering mechanism 24 from moving towards the extending device 50, the limiting mechanism 30 is preferably provided to limit and block the tray 11, so that the tray 11 can be stably stored on the synchronous belt of the buffering mechanism 24. When the buffering mechanism 24 moves vertically by a certain distance under the jacking movement of the jacking device 40 and is connected to the conveying mechanism 53, the limiting mechanism 30 needs to be unlocked. The unlocking protrusion 52 can release the limiting operation of the limiting mechanism 30 on the tray 11, so that the tray 11 can be normally moved and conveyed.

[0062] As shown in the drawings, preferably, the buffering device 20 is further provided with a limiting mechanism 30, which is installed at one end of the buffering support 21 close to the extending device 50, and is used for limiting the tray 11. The extending device 50 is further provided with an unlocking protrusion 52, which is installed at one end of the extending support 51 close to the buffering device 20, and is used for unlocking the limiting mechanism 30. Figure 4 Figure 9 ​​​As shown, preferably, the limiting mechanism 30 is provided with a limiting support 31, a limiting spring and an auxiliary wheel 33. The limiting support 31 is slidingly connected to the buffer support 21, one end of which extends to the inside of the buffer device 20 and performs the limiting blocking operation on the tray 11, and the other end of which extends to the outside of the buffer device 20 and is provided with the auxiliary wheel 33. One end of the limiting spring is connected to the limiting support 31, and the other end of the limiting spring is connected to the buffer support 21. The spring force of the limiting spring drives the limiting support 31 to keep the limiting blocking operation on the tray 11. The auxiliary wheel 33 cooperates with the unlocking protrusion 52 to release the limiting blocking operation of the limiting support 31 on the tray 11.

[0063] Specifically, the end of the limiting support 31 extending to the inside of the buffer device 20 is provided with a buffer cushion 32, which can buffer the impact of the tray 11 and avoid the position deviation of the loaded workpiece caused by the direct impact of the tray 11 on the limiting support 31. The limiting spring can be a compression spring or a tension spring, as long as the spring force can keep the limiting support 31 moving towards the inside of the buffer device 20 to block the tray 11. The unlocking protrusion 52 can be provided in a trapezoidal protruding structure. The protrusion can drive the auxiliary wheel 33 to move to the outside of the buffer device 20, drive the limiting support 31 to move outwards by a certain distance synchronously, release the limiting of the tray 11, and make the tray 11 normally transportable.

[0064] Secondly, each group of buffer mechanisms 24 can be provided with a corresponding limiting mechanism 30. Only one group of unlocking protrusions 52 needs to be provided on the extension support 51. When the tray 11 needs to be transported, the jacking device 40 drives the corresponding buffer mechanism 24 to move upwards and be connected to the extension device 50. At this time, the unlocking protrusion 52 releases the limiting of the tray 11 by the limiting mechanism 30 of the currently connected buffer mechanism 24, so as to transport the tray 11.

[0065] As shown in Figure 3 and Figure 4 As shown, preferably, the jacking device 40 is provided with a jacking motor 41, a jacking synchronous belt 42, a jacking synchronous wheel 43, a jacking screw 44 and a jacking nut 45. The jacking synchronous belt 42 is respectively drivingly connected to the jacking synchronous wheel 43 and the output shaft of the jacking motor 41. The jacking screw 44 is rotatably connected to the vehicle body 10. The jacking nut 45 is fixedly connected to the buffer device 20 and cooperates with the jacking screw 44 to form a ball screw transmission system. The jacking synchronous wheel 43 is drivingly connected to the jacking screw 44.

[0066] Specifically, in order to perform the jacking operation on the buffer device 20 in the vertical direction, it is preferred to drive the buffer device 20 by using the ball screw transmission system, and to transmit the rotary power of the jacking motor 41 to the jacking screw 44 by using the jacking synchronous belt 42 and the jacking synchronous wheel 43, so that the jacking screw 44 rotates and drives the jacking nut 45 to move linearly along the axial direction of the jacking screw 44, thereby jacking the jacking nut 45 and the buffer device 20.

[0067] Secondly, in order to make the movement of the buffer device 20 more stable, preferably, a cylindrical shaft 46 is also installed in the vehicle body 10, a linear bearing 47 is installed on the buffer bottom plate 22 of the buffer device 20, the linear bearing 47 is sleeved on the cylindrical shaft 46 and forms a sliding connection, thereby forming a linear motion system, and the movement of the buffer device 20 is assisted.

[0068] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being defined by the appended claims rather than the above description, and it is intended to embrace all changes and modifications that fall within the meaning and scope of equivalents of the claims.

Claims

1. A workpiece buffer cart, comprising: The device comprises a vehicle body (10), a lifting device (40) mounted on the vehicle body (10), a buffer device (20) mounted on the driving end of the lifting device (40), and an extension device (50) extending outward from the side of the vehicle body (10), the buffer device (20) is provided with a plurality of buffer mechanisms (24) for storing trays (11), the extension device (50) is provided with a conveying mechanism (53) for conveying the trays (11), and the lifting device (40) performs vertical lifting movement operation on the buffer device (20), so that the plurality of buffer mechanisms (24) are respectively connected with the conveying mechanism (53), thereby conveying the trays (11).

2. The workpiece buffer cart of claim 1, wherein, The extension device (50) is further provided with a transfer mechanism (60), one end of which is connected to the conveying mechanism (53) in a detachable manner, and the other end is connected to the buffer mechanism (24) in a detachable manner, thereby synchronously driving the buffer mechanism (24) and the conveying mechanism (53) to make them operate synchronously, and then synchronously conveying the trays (11).

3. The workpiece buffer cart of claim 2, wherein, The extension device (50) is further provided with an extension support (51), the conveying mechanism (53) is provided with a conveying motor (54) fixed to the extension support (51), a conveying synchronous wheel (55) rotatably connected to the extension support (51), and a conveying synchronous belt (56) sleeved on the conveying synchronous wheel (55), the conveying synchronous belt (56) is further connected to the output end of the conveying motor (54), so that the conveying motor (54) operates to drive the conveying synchronous belt (56) to operate synchronously, and the trays (11) placed on the conveying synchronous belt (56) are conveyed.

4. The workpiece buffer cart of claim 3, wherein, The transfer mechanism (60) is provided with a first air cylinder (61), a gear frame (62) and a transfer gear (63), the first air cylinder (61) is mounted on the extension support (51), the gear frame (62) is mounted on the slide table end of the first air cylinder (61), and the transfer gear (63) is rotatably connected to the gear frame (62); the conveying mechanism (53) is further provided with a conveying gear (57), the conveying gear (57) is connected to the conveying synchronous wheel (55) in a transmission manner, one side of the transfer gear (63) is connected to the conveying gear (57) in a detachable meshing manner, and the other side is connected to the buffer mechanism (24) in a detachable transmission manner.

5. The workpiece buffer cart of claim 4, wherein, The transfer mechanism (60) is further provided with a second air cylinder (64), the second air cylinder (64) is mounted on the extension support (51), and the first air cylinder (61) is mounted on the slide table end of the second air cylinder (64).

6. The workpiece buffer cart of claim 1, wherein, The buffer mechanism (24) is provided with a buffer synchronous wheel (25) rotatably connected to the buffer device (20), a buffer synchronous belt (26) sleeved on the buffer synchronous wheel (25), and a buffer gear (27) connected to the buffer synchronous wheel (25) in a transmission manner, and the buffer gear (27) and the transfer gear (63) are connected in a detachable meshing manner.

7. The workpiece buffer cart of claim 6, wherein, The cache device (20) is provided with a cache support (21), which is installed at the driving end of the jacking device (40) and moves vertically under the driving of the jacking device (40); a plurality of cache mechanisms (24) are uniformly spaced and respectively installed on the cache support (21) and move vertically synchronously with the cache support (21).

8. The workpiece buffer cart of claim 1, wherein, The cache device (20) is also provided with a limiting mechanism (30), which is installed at one end of the cache support (21) close to the extension device (50) and is used for limiting operation of the tray (11); the extension device (50) is also provided with an unlocking protrusion (52), which is installed at one end of the extension support (51) close to the cache device (20) and is used for unlocking operation of the limiting mechanism (30).

9. The workpiece buffer cart of claim 8, wherein, The limiting mechanism (30) is provided with a limiting support (31), a limiting spring and an auxiliary wheel (33), the limiting support (31) is slidingly connected to the cache support (21), one end of which extends to the inside of the cache device (20) and performs limiting blocking operation on the tray (11); the other end of which extends to the outside of the cache device (20) and is provided with the auxiliary wheel (33); one end of the limiting spring is connected to the limiting support (31) and the other end is connected to the cache support (21), and the elastic force of the limiting spring drives the limiting support (31) to keep the limiting blocking operation on the tray (11); the auxiliary wheel (33) and the unlocking protrusion (52) cooperate with each other to release the limiting blocking operation of the limiting support (31) on the tray (11).

10. The workpiece buffer cart of claim 1, wherein, The jacking device (40) is provided with a jacking motor (41), a jacking synchronous belt (42), a jacking synchronous wheel (43), a jacking screw (44) and a jacking nut (45), the jacking synchronous belt (42) is respectively drivingly connected to the jacking synchronous wheel (43) and the output shaft of the jacking motor (41), the jacking screw (44) is rotatably connected to the vehicle body (10), the jacking nut (45) is fixedly connected to the cache device (20) and cooperates with the jacking screw (44) to form a ball screw transmission system, and the jacking synchronous wheel (43) is drivingly connected to the jacking screw (44).

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