Bar feeding and discharging device

Abstract

The utility model provides a bar feeding and discharging device, and belongs to the technical field of machining. The technical problem that feeding and discharging of existing bars need to be achieved through different devices is solved. The bar feeding and discharging device comprises a material preparing base and a stepped feeder arranged on the material preparing base, the stepped feeder comprises a plurality of push plates arranged in a stepped mode, the push plate located on the uppermost portion is a tail end push plate, the feeding and discharging device further comprises a feeding table and a discharging support, the feeding table is fixed to the lower side of the tail end push plate in the inclination direction, and the discharging support is fixed to the lower side of the tail end push plate in the inclination direction. When the tail end push plate moves to the high position, the table top of the feeding table is flush with the upper end face of the tail end push plate, a feeding mechanism capable of moving bars on the table top of the feeding table is arranged on the feeding table, the discharging support is fixedly connected with the tail end push plate, and a discharging gripper located above the feeding table is arranged on the discharging support in the inclination direction of the tail end push plate. The bar feeding and discharging device has the advantage that the bar feeding and discharging functions are integrated.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining and relates to a loading and unloading device for bar materials. Background Art

[0002] When machining bar materials, the loading and unloading of bar materials are divided into two processes, which are generally realized manually. At present, the loading of bar materials is mainly realized by a stepped feeder. For example, a stepped feeder [Application No. 201721164881.6], a bar material conveying system [Application No. 201721900606.6] and the like disclosed in Chinese patent documents. The existing stepped feeder can only complete the loading process, and the unloading process of bar materials needs to be realized by an independent device, which leads to the overall structure of the loading and unloading device for bar materials being very complex and the universality being low. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a loading and unloading device for bar materials aiming at the above problems existing in the prior art. The technical problem solved by the utility model is to integrate the loading and unloading functions of bar materials on the basis of a stepped feeder.

[0004] The purpose of the utility model can be realized by the following technical solutions:

[0005] A loading and unloading device for bar materials includes a stock preparation seat and a stepped feeder arranged on the stock preparation seat. The stepped feeder includes a plurality of push plates arranged in a stepped manner. The push plate at the uppermost position is the end push plate. The loading and unloading device is characterized in that it further includes a loading table and a unloading support. The loading table is fixed on the lower side of the inclined direction of the end push plate. When the end push plate moves to the high position, the tabletop of the loading table is aligned with the upper end face of the end push plate. The loading table is provided with a loading mechanism capable of moving the bar materials on the tabletop of the loading table. The unloading support is fixedly connected with the end push plate. The unloading support is provided with an unloading gripper above the loading table along the inclined direction of the end push plate. The displacement magnitude of the up-and-down movement of the end push plate is the same as the distance between the unloading gripper and the tabletop of the loading table.

[0006] When in use, the loading and unloading device for the bar stock is installed on one side of the machine tool. The bar stock to be processed is successively lifted by the push plate of the stepped feeder to the end push plate, and the bar stock on the end push plate will roll onto the tabletop of the loading table; when the end push plate is in the low position, the unloading gripper is aligned with the machining station of the machine tool, and the unloading gripper is in the unloading station. The unloading gripper grabs and unloads the bar stock that has been processed on the machine tool; after unloading, the push plate moves up to the high position, and the end push plate moves the loading table upward to align with the machining station of the machine tool. The bar stock on the tabletop of the loading table is moved to the machining station of the machine tool through the loading mechanism to complete the loading, and then the push plate moves down; the loading table is located on the lower side of the inclined direction of the end push plate, which enables the bar stock on the upper end face of the end push plate to automatically roll onto the tabletop of the loading table; the loading table and the unloading support fixedly installed on the end push plate are alternately aligned with the machining station of the machine tool when the end push plate moves up and down, so as to realize the alternate loading and unloading of the bar stock. The structure is compact and the versatility is improved.

[0007] In the above-mentioned loading and unloading device for the bar stock, the loading mechanism includes a loading cylinder and a loading push block. The loading cylinder is fixed on the side of the loading table, the loading push block is located on the tabletop of the loading table, the cylinder rod of the loading cylinder is fixedly connected with the loading push block, and the loading cylinder can push the loading block to move from the front end to the end of the loading table. The end push plate transports the bar stock to the tabletop of the loading table. When the end push plate moves up to the high position, the loading cylinder drives the loading push block to move from the front end to the end of the loading table, that is, to move the bar stock to one side of the machine tool. The loading push block pushes the bar stock to the machining station of the machine tool. After loading, the loading cylinder drives the loading push block to reset.

[0008] As another case, in the above-mentioned loading and unloading device for the bar stock, the loading mechanism includes a conveyor belt installed on the loading table. The upper belt body of the conveyor belt forms the tabletop of the above-mentioned loading table, and a number of baffles are fixedly spaced on the belt body of the conveyor belt. The distance between the baffles on the conveyor belt is greater than the length of the bar stock. The end push plate transports the bar stock to the upper belt body located above the conveyor belt. After the end push plate moves up, the conveyor belt rotates, and the bar stock moves towards the machine tool along with the conveyor belt. When the bar stock is blocked during the movement, the baffle will push the bar stock to continue moving forward. When the baffle rotates away from the bar stock, the bar stock completes the loading.

[0009] In the above-mentioned loading and unloading device for the bar stock, a baffle is provided on one side of the loading table away from the end push plate, and the baffle is higher than the tabletop of the loading table. The baffle blocks the bar stock so that the bar stock stays on the tabletop of the loading table.

[0010] In the above-mentioned loading and unloading device for bar materials, the unloading gripper includes an unloading air cylinder and a clamping air cylinder. The unloading air cylinder is fixed on the unloading support. The cylinder body of the clamping air cylinder is fixedly connected to the telescopic rod of the unloading air cylinder. The unloading air cylinder can drive the clamping air cylinder to move from the front end to the end of the loading table. Fixtures matching the bar materials are fixed on the two clamping hands of the clamping air cylinder. The clamping and releasing of the two clamping hands of the clamping air cylinder are used to achieve grasping and releasing. The unloading air cylinder drives the clamping air cylinder to move back and forth. During unloading, the end push plate is in the low position. The unloading air cylinder first moves the clamping air cylinder to the end of the loading table. At this time, the clamping air cylinder is aligned with the machining station of the machine tool. The clamping hands of the clamping air cylinder close to grasp the end of the bar material. After completion, the unloading air cylinder moves the clamping hands to the front end of the loading table to complete unloading.

[0011] In the above-mentioned loading and unloading device for bar materials, the unloading support is fixed with an unloading guide plate. The unloading guide plate is located between the loading table and the unloading gripper. The unloading guide plate is inclined downward, and the lower end of the unloading guide plate is located outside the stock preparation seat. After the unloading gripper completes the unloading of the bar material, it releases the bar material. The bar material falls onto the unloading guide plate and rolls along the unloading guide plate into the cost collection box outside the stock preparation seat.

[0012] In the above-mentioned loading and unloading device for bar materials, the stock preparation seat includes a bin bottom plate. The bin bottom plate is inclined downward. The stepped feeder is located at the lower end of the bin bottom plate. When the uppermost push plate is in the low position, its upper end surface is aligned with the bin bottom plate. The bar materials to be processed are stacked on the bin bottom plate. The inclined bin bottom plate causes the bar materials to move towards the stepped feeder side. The push plates are used to lift and convey the bar materials onto the loading table in sequence.

[0013] In the above-mentioned loading and unloading device for bar materials, a limit baffle is provided on one side of the front end of the bin bottom plate where it is located on the loading table. A number of fixing holes for fixing the limit baffle are provided on the bin bottom plate along the front-back direction of the loading table. One end of the bar material located on the bin bottom plate leans against the limit baffle. Thus, the initial position of the bar material entering the loading table can be limited, and the bar material can be accurately pushed into the machining station of the machine tool to complete loading. The position of the limit baffle is adjustable and can adapt to bar materials of different lengths.

[0014] In the above-mentioned loading and unloading device for bar materials, the stock preparation seat further includes connecting plates located between adjacent push plates. The adjacent connecting plates are arranged in a stepped shape. When the push plate is in the low position, the upper end surface of the push plate is flush with the upper end surface of the front connecting plate. When the push plate is in the high position, the upper end surface of the push plate is flush with the upper end surface of the rear connecting plate. The connecting plates play a transitional role and temporarily store the bar materials during the up and down movement of the push plate.

[0015] Compared with the prior art, the loading and unloading device for bar materials of the present invention integrates the loading and unloading functions of bar materials on the basis of a stepped feeder, and has the advantages of compact structure and high versatility. Description of the Drawings

[0016] Figure 1 It is a three-dimensional structural schematic diagram when the loading and unloading device of the bar stock is arranged on one side of the machine tool.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the loading and unloading device of the bar stock.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of another perspective of the loading and unloading device of the bar stock.

[0019] Figure 4 It is a sectional structural schematic diagram of the loading and unloading device of the bar stock.

[0020] Figure 5 It is a three-dimensional structural schematic diagram when the end push plate is assembled with the loading table and the unloading gripper.

[0021] In the figure, 1 is the stock preparation base; 11 is the bottom plate of the stock bin; 111 is the fixing hole; 12 is the limit baffle; 13 is the connecting plate; 14 is the loading table; 141 is the baffle; 142 is the loading cylinder; 143 is the loading push block; 2 is the unloading support; 21 is the unloading gripper; 22 is the unloading cylinder; 23 is the clamping cylinder; 24 is the unloading guide plate; 3 is the stepped feeder; 31 is the push plate; 32 is the end push plate; 33 is the driving cylinder; 34 is the lifting base; 4 is the machine tool; 41 is the processing station. Specific embodiments

[0022] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0023] Embodiment 1

[0024] As Figures 1 to 5 shown, the loading and unloading device of the bar stock is arranged on one side of the machine tool 4. A main shaft is rotatably connected to the machine tool 4, and the main shaft is of a hollow structure. The loading and unloading device of the bar stock includes a stock preparation base 1 and a stepped feeder 3 arranged on the stock preparation base 1. The stepped feeder 3 includes a plurality of push plates 31 arranged in a stepped manner and a driving cylinder 33. The push plates 31 are all inclined. The lower ends of the plurality of push plates 31 are fixed on the lifting base 34. The driving cylinder 33 is fixed on the stock preparation base 1, and the cylinder rod of the driving cylinder 33 is fixedly connected to the lifting base 34 to drive the push plates 31 to tilt up and down at one end.

[0025] The topmost push plate 31 is the end push plate 32. This loading and unloading device further includes a loading table 14 and a unloading support 2. The loading table 14 is fixed to the lower side in the inclined direction of the end push plate 32. When the end push plate 32 moves to the high position, the tabletop of the loading table 14 is aligned with the upper end face of the end push plate 32. The loading table 14 is provided with a loading mechanism capable of moving the bar stock on the tabletop of the loading table 14. The unloading support 2 is fixedly connected to the end push plate 32. Along the inclined direction of the end push plate 32 on the unloading support 2, there is an unloading gripper 21 located above the loading table 14. The displacement size of the up and down movement of the end push plate 32 is the same as the distance between the unloading gripper 21 and the tabletop of the loading table 14.

[0026] The loading mechanism includes a loading cylinder 142 and a loading push block 143. The loading cylinder 142 is fixed to the side of the loading table 14. The loading push block 143 is located on the tabletop of the loading table 14. The cylinder rod of the loading cylinder 142 is fixedly connected to the loading push block 143. The loading cylinder 142 can push the loading block to move from the front end of the loading table 14 to the end. On one side of the loading table 14 away from the end push plate 32, there is a baffle 141, and the baffle 141 is higher than the tabletop of the loading table 14. The end push plate 32 transports the bar stock to the tabletop of the loading table 14. When the end push plate 32 moves up to the high position, the loading cylinder 142 drives the loading push block 143 to move from the front end of the loading table 14 to the end, that is, to move the bar stock towards the machine tool 4. The loading push block 143 pushes the bar stock towards the machining station 41 of the machine tool 4. After the loading is completed, the loading cylinder 142 drives the loading push block 143 to reset.

[0027] The unloading gripper 21 includes an unloading cylinder 22 and a clamping cylinder 23. The unloading cylinder 22 is fixed to the unloading support 2. The cylinder block of the clamping cylinder 23 is fixedly connected to the telescopic rod of the unloading cylinder 22. The unloading cylinder 22 can drive the clamping cylinder 23 to move from the front end of the loading table 14 to the end; the unloading support 2 is fixed with an unloading guide plate 24. The unloading guide plate 24 is located between the loading table 14 and the unloading gripper 21. The unloading guide plate 24 is inclined downward and the lower end of the unloading guide plate 24 is located outside the stock preparation seat 1. Fixtures matching the bar stock are fixed on the two clamping hands of the clamping cylinder 23. The clamping and releasing of the bar stock are realized by the closing and opening of the two clamping hands of the clamping cylinder 23. The unloading cylinder 22 drives the clamping cylinder 23 to move back and forth; during unloading, the end push plate 32 is in the low position. The unloading cylinder 22 first moves the clamping cylinder 23 to the end of the loading table 14. At this time, the clamping cylinder 23 is aligned with the machining station 41 of the machine tool 4. The clamping hands of the clamping cylinder 23 close to grasp the end of the bar stock. After completion, the unloading cylinder 22 moves the clamping hands to the front end of the loading table 14 to complete the unloading.

[0028] The stock preparation base 1 includes a bin bottom plate 11 which is arranged obliquely downward. The stepped feeder 3 is located at the lower end of the bin bottom plate 11. When the upper end surface of the lowermost push plate 31 is at a low position, it is aligned with the bin bottom plate 11. A limit baffle 12 is provided on one side of the front end of the bin bottom plate located on the loading table 14. A number of fixing holes 111 for fixing the limit baffle 12 are provided on the bin bottom plate along the front-back direction of the loading table 14. The bar materials to be processed are stacked on the bin bottom plate 11. The inclined bin bottom plate 11 causes the bar materials to move towards the stepped feeder 3 side. The push plate 31 sequentially lifts and conveys the bar materials onto the loading table 14 one by one.

[0029] The stock preparation base 1 further includes a connecting plate 13 located between adjacent push plates 31. The adjacent connecting plates 13 are arranged in a stepped shape. When the push plate 31 is at a low position, the upper end surface of the push plate 31 is flush with the upper end surface of the front connecting plate 13. When the push plate 31 is at a high position, the upper end surface of the push plate 31 is flush with the upper end surface of the rear connecting plate 13. During the up and down movement of the push plate 31, the bar materials are temporarily stored.

[0030] During use, the loading and unloading device for the bar materials is installed on one side of the machine tool 4. The bar materials to be processed are sequentially lifted by the push plate 31 of the stepped feeder 3 and sent to the end push plate 32. The bar materials located on the end push plate 32 will roll onto the table surface of the loading table 14. When the end push plate 32 is at a low position, the unloading gripper 21 is aligned with the processing station 41 of the machine tool 4. The unloading gripper 21 is at the unloading station. The unloading gripper 21 grabs and unloads the bar materials processed on the machine tool 4. After unloading, the push plate 31 moves up to a high position. The end push plate 32 moves the loading table 14 upward to be aligned with the processing station 41 of the machine tool 4. The bar materials on the table surface of the loading table 14 are moved to the processing station 41 of the machine tool 4 through the loading mechanism to complete loading. After completion, the push plate 31 moves down. The loading table 14 being located on the lower side of the inclined direction of the end push plate 32 enables the bar materials located on the upper end surface of the end push plate 32 to automatically roll onto the table surface of the loading table 14. Through the loading table 14 fixedly installed on the end push plate 32 and the unloading support 2, they alternately align with the processing station 41 of the machine tool 4 when the end push plate 32 moves up and down, thereby realizing the alternate loading and unloading of the bar materials. The structure is compact and the versatility is improved.

[0031] Embodiment 2

[0032] The structure and principle of this embodiment are basically the same as those of the first embodiment. The differences are as follows: The feeding mechanism includes a conveyor belt installed on the feeding table. The belt body on the upper side of the conveyor belt forms the tabletop of the feeding table, and a number of baffles are fixedly spaced on the belt body of the conveyor belt. The spacing between the baffles on the conveyor belt is greater than the length of the bar stock. The end push plate transports the bar stock to the belt body on the upper side of the conveyor belt. After the end push plate moves upward, the conveyor belt rotates, and the bar stock moves towards the machine tool along with the conveyor belt. When the bar stock is blocked during the movement, the rear baffle will push the bar stock forward. When the baffle rotates and separates from the bar stock, the bar stock completes the feeding.

[0033] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar means for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A loading and unloading device for bar materials, comprising a material preparation seat (1) and a stepped feeder (3) arranged on the material preparation seat (1), wherein the stepped feeder (3) comprises a plurality of push plates (31) arranged in a stepped manner, wherein the push plate (31) located at the top is an end push plate (32), characterized in that: The loading and unloading device also includes a loading platform (14) and a unloading bracket (2), wherein the loading platform (14) is fixed on the lower side of the end push plate (32) in the inclined direction, and when the end push plate (32) moves to a high position, the table surface of the loading platform (14) is aligned with the upper end surface of the end push plate (32), and a loading mechanism capable of moving the rod material on the table surface of the loading platform (14) is provided on the loading platform (14), and the unloading bracket (2) is fixedly connected to the end push plate (32), and a unloading gripper (21) located above the loading platform (14) is provided on the unloading bracket (2) along the inclined direction of the end push plate (32), and the displacement size of the end push plate (32) moving up and down is the same as the distance between the unloading gripper (21) and the table surface of the loading platform (14).

2. The bar loading and unloading device according to claim 1, characterized in that: The feeding mechanism comprises a feeding cylinder (142) and a feeding push block (143); the feeding cylinder (142) is fixed on the side of the feeding platform (14); the feeding push block (143) is located on the table top of the feeding platform (14); the cylinder rod of the feeding cylinder (142) is fixedly connected to the feeding push block (143); the feeding cylinder (142) can push the feeding block to move from the front end of the feeding platform (14) to the end.

3. The bar loading and unloading device according to claim 1, characterized in that: The feeding mechanism comprises a conveyor belt installed on a feeding platform (14), the belt body of the conveyor belt located on the upper side forms the table surface of the feeding platform (14), and a plurality of baffles (141) are fixed at intervals on the belt body of the conveyor belt.

4. The bar loading and unloading device according to claim 1, 2 or 3, characterized in that: A baffle (141) is provided on the side of the loading platform (14) away from the end push plate (32), and the baffle (141) is higher than the surface of the loading platform (14).

5. The bar loading and unloading device according to claim 1, 2 or 3, characterized in that: The unloading gripper (21) comprises an unloading cylinder (22) and a gripping cylinder (23); the unloading cylinder (22) is fixed on the unloading bracket (2); the cylinder body of the gripping cylinder (23) is fixedly connected to the telescopic rod of the unloading cylinder (22); the unloading cylinder (22) can move the gripping cylinder (23) from the front end of the loading platform (14) to the end.

6. The bar loading and unloading device according to claim 1, 2 or 3, characterized in that: The unloading bracket (2) is fixed with an unloading guide plate (24), and the unloading guide plate (24) is located between the loading platform (14) and the unloading gripper (21). The unloading guide plate (24) is arranged to be inclined downward, and the lower end of the unloading guide plate (24) is located outside the material preparation seat (1).

7. The bar loading and unloading device according to claim 1, 2 or 3, characterized in that: The material preparation seat (1) comprises a silo bottom plate (11), the silo bottom plate (11) is arranged to be inclined downward, the stepped feeder (3) is located at the lower end of the silo bottom plate (11), and the upper end surface of the push plate (31) located at the bottom is aligned with the silo bottom plate (11) when it is in a low position.

8. The bar loading and unloading device according to claim 7, characterized in that: A limit baffle (12) is provided on one side of the warehouse bottom plate located at the front end of the loading platform (14), and a plurality of fixing holes (111) for fixing the limit baffle (12) are provided on the warehouse bottom plate along the front-rear direction of the loading platform (14).

9. The bar loading and unloading device according to claim 1, 2 or 3, characterized in that: The material preparation seat (1) further comprises a connecting plate (13) located between adjacent push plates (31), and the adjacent connecting plates (13) are arranged in a step-like manner. When the push plate (31) is located in a low position, the upper end surface of the push plate (31) is flush with the upper end surface of the connecting plate (13) on the front side, and when the push plate (31) is located in a high position, the upper end surface of the push plate (31) is flush with the upper end surface of the connecting plate (13) on the rear side.

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