CN116833260A - Automatic bending machine - Google Patents

Abstract

The application discloses an automatic bending machine, which comprises a frame, a workbench, a bending cutter, a pushing piece and a blocking piece, wherein the pushing piece is arranged on the frame; the workbench is arranged on the frame, and a V-shaped groove is formed in the upper end of the workbench along the left-right direction; the bending cutter can be arranged on the frame in an up-and-down movable way, and is positioned right above the V-shaped groove; the pushing piece and the blocking piece are respectively and movably arranged at the front and back sides of the V-shaped groove, the pushing piece is used for pushing the screen plate at the upper end of the workbench to move backwards, and the blocking piece is used for limiting the screen plate to move backwards; when the pushing piece pushes the screen plate to move backwards until the screen plate contacts with the blocking piece, the bending cutter moves downwards; when the bending cutter moves downwards to be in contact with the screen plate, the pushing piece moves forwards, the blocking piece moves backwards until the pushing piece and the blocking piece are separated from the screen plate respectively, and the bending cutter continues to move downwards so as to bend the screen plate to form a V-shaped structure. The automatic machine is high in automation degree, convenient to use, high in safety and high in working efficiency, only one worker is needed, and manual work load is small.

Description

Automatic bending machine

Technical Field

The application relates to the technical field of bending equipment, in particular to an automatic bending machine.

Background

Grid trays are commonly used for support and protection when laying electrical cables, optical communication cables or other long lengths of tubing. The existing grid bridge is generally a grid-shaped structure with a shape of , and the interior of the shape of is used for laying electric cables, communication optical cables or other long fiber pipes.

At present, when a grid bridge with a -shaped structure is processed, two workers are generally required to put a screen onto a bending machine, and the position of the screen is adjusted to start the bending machine to perform first bending operation; then, two workers horizontally rotate the screen plate by 180 degrees and readjust the position of the screen plate so as to start a bending machine to carry out a second bending operation, and the screen plate is processed to form a grid bridge; and finally, two workers lift the grid bridge frame away from the bending machine to finish blanking.

However, the existing bending machine has the following defects: 1. each bending machine needs to be provided with two workers, so that manpower is wasted, and the two workers are required to have good action coordination capability during operation, otherwise, once the two workers are improperly matched, the working efficiency is reduced, and safety accidents are easily caused; 2. the automatic degree is low, the dependence on manpower is strong, the workload of manual operation is large, the working efficiency is low, and the industrial processing production is not facilitated.

Disclosure of Invention

The application aims to provide an automatic bending machine which is high in automation degree, convenient to use, high in safety, high in working efficiency, less in manual work load and only needs to be provided with one worker.

In order to achieve the above purpose, the application adopts the following technical scheme: an automatic bending machine comprises a frame, a workbench, a bending cutter, a pushing piece and a blocking piece; the workbench is arranged on the rack, and a V-shaped groove is formed in the upper end of the workbench along the left-right direction; the bending cutter can be arranged on the frame in an up-and-down movable way, and is positioned right above the V-shaped groove; the pushing piece and the blocking piece are respectively and movably arranged at the front and rear sides of the V-shaped groove, the pushing piece is used for pushing the screen plate at the upper end of the workbench to move backwards, and the blocking piece is used for limiting the screen plate to move backwards; when the pushing piece pushes the screen plate to move backwards until the screen plate contacts the blocking piece, the bending cutter moves downwards; when the bending cutter moves downwards to be in contact with the screen plate, the pushing piece moves forwards, the blocking piece moves backwards until the pushing piece and the blocking piece are separated from the screen plate respectively, and the bending cutter continues to move downwards so as to bend the screen plate to form a V-shaped structure.

Preferably, the blocking member includes a blocking plate and a pressing rod; the blocking plate can be arranged on the frame in a front-back sliding way, the distance between the upper end of the blocking plate and the upper end of the workbench is greater than or equal to the thickness of the screen plate, and the distance between the lower end of the blocking plate and the upper end of the workbench is smaller than the thickness of the screen plate; the rear end of the compression bar is arranged on the blocking plate; after the first bending operation is finished, and the pushing piece pushes the screen plate to contact with the blocking piece again, the front end of the pressing rod is pressed on the longitudinal ribs of the screen plate. The advantages are that: after the first bending operation is finished, when the pushing piece pushes the screen plate to continuously move backwards until the rear end of the screen plate is contacted with the blocking piece again, the rear end of the screen plate is easy to push up, so that the positioning effect on the screen plate is lost, and further the second bending operation cannot be continued. However, under the effect of the blocking plate and the pressing rod, when the rear end of the screen plate is contacted with the blocking piece (namely the blocking plate) again, the front end of the pressing rod is just pressed on the longitudinal ribs, so that the rear end of the screen plate is prevented from tilting upwards, the stability of positioning the screen plate is ensured, and a foundation is provided for the subsequent stable second bending operation.

Preferably, the rear end of the pressing rod is arranged on the blocking plate in a manner of sliding up and down. The advantages are that: the height of the compression bar is adjusted by sliding up and down, so that the front end of the compression bar can be ensured to be pressed on the longitudinal ribs all the time when grid bridges of different models are processed, and the universality is stronger.

Preferably, a guiding inclined plane is arranged between the front end and the lower end of the pressure rod, and/or the front end of the pressure rod is arranged in an upward inclined way. The advantages are that: because the front end of the compression bar needs to be compressed on the longitudinal ribs, the lower part of the compression bar needs to be ensured to be just contacted with the longitudinal ribs; in the actual processing process, once errors occur in the size, the longitudinal ribs are very easy to abut against the front end of the compression bar, so that the screen plate cannot contact with the blocking plate, and positioning cannot be completed. However, under the action of the guide inclined plane, the longitudinal ribs are easy to deform, and when the longitudinal ribs are abutted on the guide inclined plane, the longitudinal ribs can finally move to the lower part of the compression bar under the thrust action of the pushing piece, so that the screen plate can normally contact with the blocking plate to complete positioning, and the fault tolerance rate can be improved. Similarly, when the front end of the pressing plate is obliquely arranged upwards, the same effect as that of the guide inclined plane can be achieved; of course, the front end of the compression bar is inclined upwards, and the guiding inclined plane can be arranged between the front end and the lower end of the compression bar, so that the fault tolerance is further improved.

Preferably, the blocking piece further comprises a sliding seat, and the sliding seat is slidably arranged on the frame back and forth; the number of the blocking plates is at least two, the rear ends of the blocking plates are provided with connecting arms backwards, and the rear ends of the connecting arms are arranged on the sliding seat in a left-right sliding mode. The advantages are that: the sliding seat can be slid back and forth to drive each connecting arm (namely each blocking plate) to move back and forth; the blocking plates are arranged at intervals, so that the volume of the blocking plates can be reduced on the premise of achieving the same effect. In addition, through the left and right sliding adjustment of the connecting arms, the interval between the blocking plates can be adjusted, so that the processing of different types of grid bridges can be adapted, and the universality is higher.

Preferably, the pushing member comprises a pushing plate, the pushing plate is slidably disposed on the frame, a distance between an upper end of the pushing plate and an upper end of the workbench is greater than or equal to a thickness of the screen plate, and a distance between a lower end of the pushing plate and an upper end of the workbench is smaller than the thickness of the screen plate. The advantages are that: the screen plate at the upper end of the workbench can be driven to move backwards by driving the push plate to slide backwards, so that the operation is simple and convenient.

Preferably, the pushing piece further comprises a guide post, a sliding block and a pushing cylinder; the guide post is fixed on the frame along the front-back direction, a sliding hole is formed in the front-back of the sliding block in a penetrating mode, and the sliding hole is connected to the guide post in a front-back sliding mode; the pushing cylinder is fixed on the frame and is used for pushing the sliding block to slide; the push plate is provided with a connecting plate extending forwards, and the connecting plate is fixed at the upper end of the sliding block. The advantages are that: the push plate can be driven to slide back and forth by controlling the expansion and contraction of the pushing cylinder, so that the operation is simple and convenient; through sliding fit between the guide post and the sliding hole, the movement precision of the push plate can be improved.

Preferably, the automatic bending machine further comprises a positioning piece, wherein the positioning piece is arranged at the left end and/or the right end of the frame, and the positioning piece is positioned at the front side of the V-shaped groove; the distance between the upper end of the locating piece and the upper end of the workbench is greater than or equal to the thickness of the screen plate, and the distance between the lower end of the locating piece and the upper end of the workbench is smaller than the thickness of the screen plate. The advantages are that: under the condition that the locating piece is arranged, a worker places the screen plate on the workbench, and simultaneously, one end of the screen plate is abutted against the locating piece, so that the screen plate can be located in the left-right direction, and the left end of the screen plate is prevented from being placed to the left of the bending cutter or the right end of the screen plate is prevented from being placed to the right of the bending cutter due to carelessness of the worker. In addition, be provided with under the condition of depression bar, more need in the left and right directions to the otter board is fixed a position, in order to prevent the front end of depression bar butt is received after buckling on the horizontal muscle, at this moment, through when fixing a position the setting element, can avoid the manual work with the depression bar with horizontal muscle staggers, and the operation is simpler and more convenient.

Preferably, the automatic bending machine further comprises a clamping piece, wherein the clamping piece comprises a supporting plate, a clamping bolt and a C-shaped clamping arm, and the supporting plate is fixed on the frame or the workbench; the clamping bolt is in threaded connection with the lower end of the clamping arm, and a clamping area for clamping the locating piece on the supporting plate is formed between the clamping bolt and the upper end of the clamping arm. The advantages are that: the positioning piece can be clamped and fixed on the supporting plate (namely the workbench or the rack) through the clamping area, so that the operation is simple and convenient; simultaneously, when unscrewing the clamping bolt, can adjust the setting element is in the position in the backup pad, make the one end of otter board with when the setting element contact, the other end of otter board can not surpass to the outside of cutter of bending, just the front end of depression bar with horizontal muscle staggers.

Preferably, the V-shaped groove is embedded with a V-shaped template, the front side and the rear side of the V-shaped template horizontally extend outwards to form an extension part, and the upper end face of the extension part is flush with the upper end face of the workbench. The advantages are that: when the screen plate is directly contacted with the V-shaped groove, once the abrasion of the V-shaped groove exceeds a standard value, the screen plate needs to be replaced integrally, and the cost is high; however, under the action of embedding the V-shaped template, when abrasion occurs, only the V-shaped template needs to be independently replaced, so that the cost is low.

Preferably, the workbench comprises a workbench body, a first supporting piece and a second supporting piece; the table body is of a strip-shaped structure, the table body is detachably arranged on the rack, and the V-shaped groove is formed at the upper end of the table body; the first support piece and the second support piece are fixed on the frame, the first support piece and the second support piece are distributed on the front side and the rear side of the table body, and the upper end face of the first support piece, the upper end face of the second support piece and the upper end face of the table body are mutually flush. The advantages are that: because the downward pressure of the bending cutter acts on the V-shaped groove through the screen plate in the bending process, and other areas on the workbench are mainly used for supporting the screen plate, the workbench body can effectively play a supporting role in bending when being arranged on a rack; when the first supporting piece and the second supporting piece are respectively arranged on the front side and the rear side of the table body, the table body can be assisted to support the screen plate, and the overall weight can be reduced. In addition, because the table body is detachably arranged, the table body is convenient to replace independently, and the table body is convenient to detach, so that the V-shaped template in the V-shaped groove is replaced.

Preferably, the bending tool comprises a tool rest and at least two tool bodies, wherein the tool rest can be connected to the frame in an up-down sliding manner; the cutter body detachably set up in the knife rest lower extreme, at least two connect gradually along left and right directions between the cutter body. The advantages are that: the cutter body can be driven to move up and down by controlling the up-and-down sliding of the cutter rest, so that bending operation is realized. In addition, the number of the cutter bodies is at least two, so that the overall length in the left-right direction can be adjusted by mutually splicing according to actual needs; simultaneously, both can reduce singly the processing degree of difficulty of cutter body again can change alone after damaging, the cost is lower.

Preferably, the lower end of the cutter body is bent to form a bending part, and an abdication groove for accommodating the longitudinal ribs on the screen plate is formed in the outer side surface of the bending part. The advantages are that: the bending part can play a role in buffering, so that the cutter body and the workbench are prevented from being damaged due to overlarge pressure during bending. In addition, because the otter board is taken out from the automatic welding equipment, after cutting, until the otter board is placed on the workbench, the longitudinal ribs on the otter board are always positioned above the transverse ribs, so that if the bending grooves are not used, the outer side faces of the bending parts are contacted with the longitudinal ribs, and therefore, the pressure is directly applied to the longitudinal ribs, the combination parts of the longitudinal ribs and the transverse ribs are extremely easy to flatten, and the effect on the appearance of the finished grid bridge is very large although the normal use of the finished grid bridge is not great, so that the market competitiveness is lacking in sales. After setting up the groove of stepping down, in the bending process, the inslot of stepping down has exactly the space that holds vertical muscle to avoid will horizontal muscle and the position that vertical muscle combines flattens.

Compared with the prior art, the application has the beneficial effects that: (1) During bending operation, the screen plate on the workbench is pushed to move backwards through the pushing piece until the rear end of the screen plate contacts with the blocking piece, and the position, needing bending, on the screen plate is located right above the V-shaped groove (namely right below the bending cutter), so that the screen plate can be automatically positioned; then, driving the bending cutter to move downwards until the lower end of the bending cutter contacts with the screen plate, and pressing the screen plate on the upper end of the workbench to avoid displacement of the screen plate on the workbench before bending begins; then, driving the blocking piece to move backwards to be separated from the screen plate, and driving the pushing piece to move forwards to be separated from the screen plate, so as to avoid mutual interference between the pushing piece and the blocking piece and between the pushing piece and the screen plate in the bending process; and finally, driving the bending cutter to continuously move downwards until the bending cutter presses the screen plate into the V-shaped groove so as to fold the screen plate into a V-shaped structure, and driving the bending cutter to move upwards to an initial position. The whole operation process is high in automation degree, the screen plate is placed on the workbench by a worker, the steps are automatically repeated for two times, the screen plate can be automatically bent to form a grid bridge frame with a -shaped structure, and finally the grid bridge frame is taken down by the worker; compared with the traditional bending machine, the automatic bending machine is high in automation degree, convenient to use, high in safety and working efficiency, and less in manual workload, and only needs to be provided with one worker.

(2) After the first bending operation is finished, when the pushing piece pushes the screen plate to continuously move backwards until the rear end of the screen plate is contacted with the blocking piece again, the rear end of the screen plate is easy to prop up, so that the positioning effect on the screen plate is lost, and further the second bending operation cannot be continued; however, when the blocking member includes the blocking plate and the pressing rod, the front end of the pressing rod is just pressed against the longitudinal rib when the rear end of the mesh plate is in contact with the blocking member (i.e., the blocking plate) again, so that the rear end of the mesh plate is prevented from tilting upward, the stability of positioning the mesh plate is ensured, and a foundation is provided for the subsequent stable second bending operation.

Drawings

Fig. 1 is a perspective view of an automatic bending machine provided by the application.

Fig. 2 is an enlarged view of a portion of the present application at I in fig. 1.

Fig. 3 is an enlarged view of part II in fig. 1 provided by the present application.

Fig. 4 is a perspective view of the automatic bending machine of fig. 1 in a rear view.

Fig. 5 is an enlarged view of a portion of fig. 4 at III, provided by the present application.

FIG. 6 is an enlarged view of a portion of the portion IV of FIG. 4 provided by the present application

FIG. 7 is an enlarged view of a portion of the V in FIG. 4 according to the present application

Fig. 8 is an enlarged view of the barrier of fig. 4 provided by the present application.

Fig. 9 is an enlarged view of the pushing member of fig. 1 provided by the present application.

Fig. 10 is an exploded view of the table of fig. 1 provided by the present application.

Fig. 11 is an enlarged view of a portion of VI in fig. 10 provided by the present application.

Fig. 12 is an exploded view of the bending tool of fig. 1 provided by the present application.

Fig. 13 is a cross-sectional view of the automatic bending machine of fig. 1 provided by the present application.

Fig. 14 is an enlarged view of a portion of VII in fig. 13 provided by the present application.

Fig. 15 is an enlarged view of a portion VIII in fig. 13 provided by the present application.

Fig. 16 is an enlarged view of a portion of the point IX of fig. 13 provided by the present application.

Fig. 17 is a partial enlarged view of the portion X in fig. 13 provided by the present application.

In the figure: 1. a frame; 11. a limit bar; 2. a work table; 21. a table body; 211. a V-shaped groove; 212. a convex strip; 22. a first support; 221. a mounting plate; 23. a second support; 231. a mounting part; 24. a first locking member; 241. a first fixing plate; 242. a first bolt; 243. a first hand screw; 244. a gasket; 25. a second locking member; 251. a second fixing plate; 252. a second bolt; 253. a second hand-screwed screw; 3. bending tools; 31. a tool holder; 32. a cutter body; 321. a bending part; 322. a relief groove; 323. a clamping groove; 33. a hydraulic cylinder; 34. a third locking member; 341. a first clamping plate; 342. a second clamping plate; 343. a third clamping plate; 344. a clamping part; 4. a pushing member; 41. a push plate; 411. a connecting plate; 412. rib plates; 42. a guide post; 43. a slide block; 431. a slide hole; 44. a pushing cylinder; 5. a blocking member; 51. a blocking plate; 510. a connecting arm; 511. a slit hole; 52. a compression bar; 521. a guide slope; 522. a mounting block; 523. a mounting hole; 53. a sliding seat; 54. a slide plate; 55. a guide groove; 56. a guide rail; 57. a driving cylinder; 6. a positioning piece; 7. a clamping member; 71. a clamp arm; 72. clamping a bolt; 73. a support plate; 8. a V-shaped template; 81. an extension; 100. a screen plate; 101. transverse ribs; 102. longitudinal ribs.

Detailed Description

The present application will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present application, it should be noted that, for the azimuth words such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present application that the device or element referred to must have a specific azimuth configuration and operation.

It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The terms "comprises" and "comprising," along with any variations thereof, in the description and claims, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1, 4 and 13, one embodiment of the present application provides an automatic bending machine comprising a frame 1, a table 2, a bending tool 3, a pusher 4 and a blocking member 5; the workbench 2 is arranged on the frame 1, and a V-shaped groove 211 is arranged at the upper end of the workbench 2 along the left-right direction; the bending cutter 3 is arranged on the frame 1 in a vertically movable manner, and the bending cutter 3 is positioned right above the V-shaped groove 211; the pushing piece 4 and the blocking piece 5 are respectively and movably arranged at the front and back sides of the V-shaped groove 211, the pushing piece 4 is used for pushing the screen plate 100 at the upper end of the workbench 2 to move backwards, and the blocking piece 5 is used for limiting the screen plate 100 to move backwards; when the pushing piece 4 pushes the screen plate 100 to move backwards to be in contact with the blocking piece 5, the bending cutter 3 moves downwards; when the bending cutter 3 moves downwards to be in contact with the screen plate 100, the pushing member 4 moves forwards, and the blocking member 5 moves backwards until the pushing member 4 and the blocking member 5 are separated from the screen plate 100 respectively, and then the bending cutter 3 continues to move downwards so as to bend the screen plate 100 to form a V-shaped structure. During bending operation, the screen plate 100 on the workbench 2 is pushed by the pushing piece 4 to move backwards until the rear end of the screen plate 100 contacts with the blocking piece 5, and the part, which is required to be bent, of the screen plate 100 is just above the V-shaped groove 211 (namely, right below the bending cutter 3), so that the positioning of the screen plate 100 can be automatically realized; then, the bending cutter 3 is driven to move downwards until the lower end of the bending cutter 3 contacts with the screen plate 100, so that the screen plate 100 can be pressed on the upper end of the workbench 2, and the screen plate 100 is prevented from being displaced on the workbench 2 before bending begins; then, the blocking piece 5 is driven to move backwards to be separated from the screen plate 100, and the pushing piece 4 is driven to move forwards to be separated from the screen plate 100, so that the pushing piece 4 and the blocking piece 5 are prevented from interfering with the screen plate 100 in the bending process; finally, the bending cutter 3 is driven to move downwards until the bending cutter 3 presses the screen plate 100 into the V-shaped groove 211 so as to fold the screen plate 100 into a V-shaped structure, and then the bending cutter 3 is driven to move upwards to an initial position. The whole operation process is high in automation degree, the screen plate 100 can be automatically bent to form a grid bridge frame with a structure by automatically repeating the steps for two times after one worker firstly places the screen plate 100 on the workbench 2, and finally the worker takes down the grid bridge frame; compared with the traditional bending machine, the automatic bending machine is high in automation degree, convenient to use, high in safety, high in working efficiency and less in manual workload, and only needs to be provided with one worker. It should be noted that, the included angle of the V-shaped groove 211 may be determined according to the type of the grid bridge to be processed, for example, when the "" grid bridge is processed, the included angle of the V-shaped groove 211 is 90 °.

Referring to fig. 6, 7 and 8, in some embodiments of the present application, the barrier 5 includes a barrier plate 51 and a compression bar 52; the blocking plate 51 is slidably arranged on the frame 1 back and forth, the distance between the upper end of the blocking plate 51 and the upper end of the workbench 2 is greater than or equal to the thickness of the screen 100, and the distance between the lower end of the blocking plate 51 and the upper end of the workbench 2 is smaller than the thickness of the screen 100; the rear end of the pressing rod 52 is arranged on the blocking plate 51; when the first bending operation is completed and the pushing member 4 pushes the net plate 100 to contact with the blocking member 5 again, the front end of the pressing rod 52 is pressed against the longitudinal rib 102 of the net plate 100. As shown in fig. 15, after the first bending operation is completed, when the pushing member 4 pushes the net plate 100 to continue to move backward until the rear end of the net plate 100 is contacted with the blocking member 5 (i.e., the blocking plate 51) again, the static friction force between the lateral surface of the transverse rib 101 and the blocking plate 51 (as shown in fig. 15) is much smaller than the static friction force between the end of the transverse rib 101 and the push plate 41 (as shown in fig. 14), so that the rear end of the net plate 100 is easily pushed up, thereby losing the positioning effect on the net plate 100 and further making it impossible to continue the second bending operation; in addition, when the included angle of the V-shaped groove 211 is greater than 90 °, after the mesh plate 100 is first folded, the included angle between the folded portion of the rear end and the upper end surface of the table 2 is smaller than 90 °, and at this time, the front end surface of the barrier plate 51 needs to be set to be in an inclined structure to ensure that the barrier plate 51 is fully contacted with the rear end of the mesh plate 100, in this case, the mesh plate 100 is pushed backward from the front end of the mesh plate 100, so that the mesh plate 100 slides (i.e. tilts) backward and upward along the front end surface of the barrier plate 51 more easily, and the positioning effect on the mesh plate 100 is lost. However, under the action of the blocking plate 51 and the pressing rod 52, when the rear end of the net plate 100 is contacted with the blocking member 5 (i.e., the blocking plate 51) again, the front end of the pressing rod 52 is just pressed against the longitudinal rib 102, so that the upward tilting of the rear end of the net plate 100 is limited, the stability of positioning the net plate 100 is ensured, and a foundation is provided for the subsequent stable second bending operation. It should be noted that, the lower end of the blocking plate 51 preferably extends below the upper end surface of the table 2, and in this case, the distance between the lower end of the blocking plate 51 and the upper end of the table 2 is a negative value, that is, less than the thickness of the mesh plate 100.

Referring to fig. 8 and 15, in some embodiments of the present application, the rear end of the pressing rod 52 is slidably disposed on the blocking plate 51. The height of the compression bar 52 is adjusted by sliding up and down, so that the front end of the compression bar 52 can be ensured to be pressed on the longitudinal ribs 102 all the time when grid bridges of different models are processed, and the universality is stronger. The present application is not limited to the vertical sliding mounting method of the pressing rod 52, and only one mounting method is provided below for reference: as shown in fig. 8, the rear end of the compression bar 52 is connected with a mounting block 522, two mounting holes 523 are penetrated through the mounting block 522, a strip hole 511 is formed in the blocking plate 51, and after a bolt passes through the mounting hole 523 and the strip hole 511 and is fastened and fixed by a nut, the mounting block 522 (i.e. the compression bar 52) can be limited to slide up and down; after unscrewing the nut, the height of the plunger 52 can be adjusted by sliding up and down.

Referring to fig. 6, 8 and 15, in some embodiments of the present application, a guide slope 521 is provided between the front end and the lower end of the pressing lever 52, and/or the front end of the pressing lever 52 is disposed to be inclined upward. As shown in fig. 15, since the front end of the pressing rod 52 needs to be pressed against the longitudinal rib 102, it is necessary to ensure that the lower portion of the pressing rod 52 is just in contact with the longitudinal rib 102; in the actual machining process, once errors occur in the dimension, the longitudinal ribs 102 are very easy to abut against the front end of the compression bar 52, so that the net plate 100 cannot contact with the blocking plate 51, and positioning cannot be completed. However, under the action of the guiding inclined plane 521, the longitudinal ribs 102 are easy to deform, and when the longitudinal ribs 102 are abutted against the guiding inclined plane 521, the longitudinal ribs 102 can also move to the lower part of the compression bar 52 under the thrust action of the pushing piece 4, so that the net plate 100 can normally contact with the blocking plate 51 to complete positioning, thereby improving the fault tolerance and ensuring that the subsequent automatic operation is stably performed. Similarly, when the front end of the pressing plate is inclined upward, the same function as the guide slope 521 can be achieved; of course, when the front end of the pressing rod 52 is disposed obliquely upward, a guiding inclined plane 521 may be disposed between the front end and the lower end of the pressing rod 52 to further improve the fault tolerance.

Referring to fig. 7 and 8, in some embodiments of the present application, the blocking member 5 further includes a sliding seat 53, and the sliding seat 53 is slidably disposed on the frame 1 back and forth; the number of the blocking plates 51 is at least two, the rear ends of the blocking plates 51 are provided with connecting arms 510 backwards, and the rear ends of the connecting arms 510 are arranged on the sliding seat 53 in a left-right sliding manner. By sliding the sliding seat 53 back and forth, each connecting arm 510 (i.e., each blocking plate 51) can be driven to move back and forth; by arranging at least two barrier plates 51 at a distance from each other, the volume of the barrier plates 51 can be reduced on the premise of achieving the same effect. In addition, the intervals between the blocking plates 51 can be adjusted by sliding the adjusting connecting arms 510 left and right so as to adapt to the processing of different types of grid bridges, and the universality is higher. It should be noted that, in the prior art, for example, one guide groove 55 is provided on each of the left and right sides of the frame 1, the left and right ends of the slide seat 53 are slidably connected to the two guide grooves 55, and the slide seat 53 is driven to slide back and forth by a driving cylinder 57 mounted on the frame 1. Similarly, the sliding installation manner between the connection arm 510 and the sliding seat 53 is also conventional, for example, a guide rail 56 is provided at the upper end of the sliding seat 53 along the left and right directions, a sliding plate 54 is installed at the rear end of the connection arm 510, the sliding plate 54 is connected to the guide rail 56 in a sliding manner, the sliding plate 54 (i.e. the connection arm 510) can be automatically driven to slide left and right by an installation cylinder, the sliding plate 54 (i.e. the connection arm 510) can be locked on the sliding seat 53 by a screw, and the sliding plate 54 can be manually driven to slide left and right by unscrewing the screw.

Referring to fig. 3 and 9, in some embodiments of the present application, the pushing member 4 includes a pushing plate 41, the pushing plate 41 is slidably disposed on the frame 1 back and forth, a distance between an upper end of the pushing plate 41 and an upper end of the table 2 is greater than or equal to a thickness of the net plate 100, and a distance between a lower end of the pushing plate 41 and an upper end of the table 2 is less than the thickness of the net plate 100. The screen plate 100 at the upper end of the workbench 2 can be driven to move backwards by driving the push plate 41 to slide backwards, so that the operation is simple. It should be noted that the sliding installation mode of the push plate 41 is not limited in the present application, for example, as shown in fig. 9, the pushing member 4 further includes a guide post 42, a slider 43, and a pushing cylinder 44; the guide post 42 is fixed on the frame 1 along the front-back direction, a sliding hole 431 is formed in the front-back of the sliding block 43 in a penetrating mode, and the sliding hole 431 is connected with the guide post 42 in a front-back sliding mode; a pushing cylinder 44 is fixed on the frame 1, and the pushing cylinder 44 is used for pushing the sliding block 43 to slide; the push plate 41 is extended forward with a connecting plate 411, and the connecting plate 411 is fixed on the upper end of the sliding block 43. The push plate 41 can be driven to slide back and forth by controlling the expansion and contraction of the pushing cylinder 44, so that the operation is simple and convenient; by the sliding fit between the guide post 42 and the slide hole 431, the movement accuracy of the push plate 41 can be improved. It should be noted that, the lower end of the pushing plate 41 preferably extends below the upper end surface of the table 2, and at this time, the distance between the lower end of the pushing plate 41 and the upper end of the table 2 is a negative value, that is, less than the thickness of the net plate 100. In addition, a rib plate 412 may be disposed between the push plate 41 and the connecting plate 411 to improve the overall strength.

Referring to fig. 3, in some embodiments of the present application, the automatic bending machine further includes a positioning member 6, where the positioning member 6 is disposed at the left end or the right end of the frame 1 (one positioning member 6 may be disposed at each of the left end and the right end of the frame 1), and the positioning member 6 is located at the front side of the V-shaped groove 211; the distance between the upper end of the positioning piece 6 and the upper end of the workbench 2 is larger than or equal to the thickness of the screen plate 100, and the distance between the lower end of the positioning piece 6 and the upper end of the workbench 2 is smaller than the thickness of the screen plate 100. In the case where the positioning member 6 is provided, a worker places the net plate 100 on the table 2 while abutting one end of the net plate 100 against the positioning member 6, so that positioning of the net plate 100 in the left-right direction can be achieved, to prevent the worker from carelessly placing the left end of the net plate 100 to the left of the bending cutter 3 or placing the right end of the net plate 100 to the right of the bending cutter 3. In addition, when the pressing rod 52 is provided, the screen plate 100 is required to be positioned in the left-right direction, so that the front end of the pressing rod 52 is prevented from abutting against the bent transverse rib 101, and at this time, when the positioning piece 6 is used for positioning, the pressing rod 52 and the transverse rib 101 can be prevented from being staggered manually, and the operation is simpler and more convenient. It should be noted that, the lower end of the positioning member 6 preferably extends below the upper end surface of the table 2, and in this case, the distance between the lower end of the positioning member 6 and the upper end of the table 2 is a negative value, that is, less than the thickness of the mesh plate 100.

Referring to fig. 3, 10 and 11, in some embodiments of the application, the automatic bending machine further comprises a clamping member 7, the clamping member 7 comprising a support plate 73, a clamping bolt 72 and a C-shaped clamping arm 71, the support plate 73 being fixed to the frame 1 or to the table 2; a clamping bolt 72 is screwed to the lower end of the clamp arm 71, and a clamping area for clamping the positioning member 6 on the support plate 73 is formed between the clamping bolt 72 and the upper end of the clamp arm 71. The positioning piece 6 can be clamped and fixed on the supporting plate 73 (namely the workbench 2 or the frame 1) through the clamping area, so that the operation is simple and convenient; meanwhile, after the clamping bolt 72 is loosened, the position of the positioning member 6 on the supporting plate 73 can be adjusted, so that when one end of the screen plate 100 contacts with the positioning member 6, the other end of the screen plate 100 does not exceed the outer side of the bending cutter 3, and the front end of the compression bar 52 is staggered with the transverse rib 101.

Referring to fig. 1 and 5, in some embodiments of the present application, V-shaped groove 211 is embedded with V-shaped die plate 8,V, and extending portions 81 extend horizontally and outwardly from the front and rear sides of die plate 8, and the upper end surface of extending portion 81 is flush with the upper end surface of table 2. When the net plate 100 is directly contacted with the V-shaped groove 211, once the abrasion of the V-shaped groove 211 exceeds a standard value, the whole net plate needs to be replaced, and the cost is high; however, under the action of embedding the V-shaped template 8, when abrasion occurs, only the V-shaped template 8 needs to be independently replaced, so that the cost is low. The V-shaped mold plate 8 may be embedded in the V-shaped groove 211 by welding, screwing, or the like.

Referring to fig. 2, 6 and 10, in some embodiments of the application, the table 2 includes a table body 21, a first support 22 and a second support 23; the table body 21 is of a strip-shaped structure, the table body 21 is detachably arranged on the frame 1, and the V-shaped groove 211 is formed at the upper end of the table body 21; the first supporting member 22 and the second supporting member 23 are fixed on the frame 1, the first supporting member 22 and the second supporting member 23 are distributed on the front side and the rear side of the table body 21, and the upper end face of the first supporting member 22, the upper end face of the second supporting member 23 and the upper end face of the table body 21 are mutually flush. Since the downward pressure of the bending tool 3 is applied to the V-shaped groove 211 through the net plate 100 during the bending process, and the other areas on the table 2 are mainly used for supporting the net plate 100, the supporting effect can be effectively achieved during bending when the table body 21 is mounted on the frame 1; when the first support 22 and the second support 23 are disposed on the front and rear sides of the table body 21, respectively, the table body 21 can be assisted to support the net plate 100 while reducing the overall weight. In addition, since the table body 21 is detachably arranged, the table body 21 is convenient to replace independently, and the table body 21 is convenient to detach, so that the V-shaped template 8 in the V-shaped groove 211 is convenient to replace. The first support 22 and the second support 23 may have a rod-like structure or a plate-like structure. In addition, the detachable mounting manner of the stand 21 is not limited in the present application, for example, as shown in fig. 4 and 5, a limit bar 11 is provided at the upper end of the stand 1 in the left-right direction, the stand 21 is directly placed at the upper end of the stand 1, and the stand 21 is clamped by the first locking member 24; the first locking member 24 includes a first fixing plate 241, a first bolt 242, and a first hand screw 243, wherein the first fixing plate 241 is fixed to the rear side of the frame 1 by the first bolt 242; the first hand-screwed screw 243 is screwed on the first fixing plate 241, and the threaded end of the first hand-screwed screw 243 is abutted on the table body 21 directly or through the gasket 244, thereby locking the table body 21 on the frame 1; when the first hand screw 243 is loosened, the table body 21 can be detached. In addition, the mounting manner of the first support 22 and the second support 23 is not limited, for example, in the case of a plate structure, as shown in fig. 2, the first support 22 has a plate structure, the rear end of the first support 22 extends downward to form a mounting plate 221, and the mounting plate 221 is locked on the frame 1 by the second locking member 25; as shown in fig. 2, the second locker 25 includes a second fixing plate 251, a second bolt 252, and a second hand screw 253, and the second fixing plate 251 is fixed to the front side of the frame 1 by the second bolt 252; the second hand-screw 253 is in threaded connection with the second fixing plate 251, and the threaded end of the second hand-screw 253 abuts the mounting plate 221 on the limit bar 11; in order to lower the height of the limit bar 11, a protruding bar 212 protrudes forward from the upper part of the front end of the table body 21, the protruding bar 212 is located right above the limit bar 11, and the front end face of the protruding bar 212 is aligned with the front end face of the limit bar 11. For example, in the case of a rod-like structure, as shown in fig. 4 and 6, the second support 23 has a rod-like structure, and the lower end of the second support 23 is provided with a mounting portion 231 downward, and the mounting portion 231 is fixed to the frame 1 by a screw.

Referring to fig. 12, in some embodiments of the present application, the bending tool 3 includes a tool rest 31 and at least two tool bodies 32, the tool rest 31 being slidably connected to the frame 1 up and down; the cutter bodies 32 are detachably disposed at the lower end of the cutter frame 31, and at least two cutter bodies 32 are sequentially connected in the left-right direction. By controlling the up-and-down sliding of the tool rest 31, the tool body 32 can be driven to move up and down, so as to realize bending operation. In addition, since the number of the cutter bodies 32 is at least two, the overall length in the left-right direction can be adjusted by mutually splicing according to actual needs; meanwhile, the machining difficulty of the single cutter body 32 can be reduced, and the cutter body can be independently replaced after being damaged, so that the cost is lower. In the present application, the manner of mounting the tool rest 31 to be slidable up and down is not limited, and for example, as shown in fig. 4, the tool rest 31 is slidably connected up and down to the frame 1 through a chute, and the tool rest 31 is driven to slide up and down by a hydraulic cylinder 33. In addition, the detachable mounting manner of the tool body 32 is not limited in the present application, for example, the tool body 32 may be detachably coupled to the lower end of the tool holder 31 through the third locking member 34, and as shown in fig. 17, the third locking member 34 includes a first clamping plate 341, a second clamping plate 342, and a third clamping plate 343, the first clamping plate 341 is fixed to the lower end of the tool holder 31 through a screw, the third clamping plate 343 is fixed to the rear side of the first clamping plate 341 through a screw, the second clamping plate 342 is fixed to the front side of the second clamping plate 342 through a screw, and a clamping area for clamping the upper end of the tool body 32 is formed between the second clamping plate 342 and the third clamping plate 343; meanwhile, the lower end of the second clamping plate 342 is provided with a clamping part 344, the upper end of the cutter body 32 is provided with a clamping groove 323, and the clamping part 344 is clamped in the clamping groove 323 to limit the cutter body 32 from falling off.

Referring to fig. 16, in some embodiments of the present application, a lower end of the cutter body 32 is bent to form a bent portion 321, and an outer side surface of the bent portion 321 is provided with a relief groove 322 for accommodating the longitudinal rib 102 on the mesh plate 100. The bending portion can play a role of buffering, and damage to the cutter body 32 and the workbench 2 due to excessive pressure during bending is prevented. In addition, since the net plate 100 is taken out from the automatic welding device, and then cut until the net plate is placed on the workbench 2, the longitudinal ribs 102 on the net plate 100 are positioned above the transverse ribs 101, so that if the effect of the yielding grooves 322 is not provided, the outer side surfaces of the bending parts are contacted with the longitudinal ribs 102, and thus the pressure is directly applied to the longitudinal ribs 102, the joint between the longitudinal ribs 102 and the transverse ribs 101 is extremely easy to flatten, and the normal use of the finished grid bridge is not greatly influenced, but the appearance of the finished grid bridge is greatly influenced, so that the market competitiveness is lacking in sales. After the relief groove 322 is formed, in the bending process, the relief groove 322 is provided with a space for accommodating the longitudinal ribs 102, so that the joint between the transverse ribs 101 and the longitudinal ribs 102 is prevented from being flattened.

The foregoing has outlined the basic principles, features, and advantages of the present application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present application, and various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of the application is defined by the appended claims and equivalents thereof.

Claims (10)

1. An automatic bending machine is characterized by comprising a frame, a workbench, a bending cutter, a pushing piece and a blocking piece; the workbench is arranged on the rack, and a V-shaped groove is formed in the upper end of the workbench along the left-right direction; the bending cutter can be arranged on the frame in an up-and-down movable way, and is positioned right above the V-shaped groove; the pushing piece and the blocking piece are respectively and movably arranged at the front and rear sides of the V-shaped groove, the pushing piece is used for pushing the screen plate at the upper end of the workbench to move backwards, and the blocking piece is used for limiting the screen plate to move backwards;

when the pushing piece pushes the screen plate to move backwards until the screen plate contacts the blocking piece, the bending cutter moves downwards; when the bending cutter moves downwards to be in contact with the screen plate, the pushing piece moves forwards, the blocking piece moves backwards until the pushing piece and the blocking piece are separated from the screen plate respectively, and the bending cutter continues to move downwards so as to bend the screen plate to form a V-shaped structure.

2. An automatic bending machine according to claim 1, wherein said blocking member comprises a blocking plate and a compression bar; the blocking plate can be arranged on the frame in a front-back sliding way, the distance between the upper end of the blocking plate and the upper end of the workbench is greater than or equal to the thickness of the screen plate, and the distance between the lower end of the blocking plate and the upper end of the workbench is smaller than the thickness of the screen plate; the rear end of the compression bar is arranged on the blocking plate; after the first bending operation is finished, and the pushing piece pushes the screen plate to contact with the blocking piece again, the front end of the pressing rod is pressed on the longitudinal ribs of the screen plate.

3. An automatic bending machine according to claim 2, wherein the rear end of the presser bar is slidably disposed up and down on the blocking plate.

4. An automatic bending machine according to claim 2, wherein a guiding ramp is provided between the front and lower ends of the press bar and/or the front end of the press bar is inclined upwardly.

5. An automatic bending machine according to claim 2, wherein said blocking member further comprises a sliding seat slidably disposed back and forth on said frame; the number of the blocking plates is at least two, the rear ends of the blocking plates are provided with connecting arms backwards, and the rear ends of the connecting arms are arranged on the sliding seat in a left-right sliding mode.

6. An automatic bending machine according to claim 1, wherein the pushing member comprises a push plate slidably disposed forwardly and backwardly on the frame, a distance between an upper end of the push plate and an upper end of the table being equal to or greater than a thickness of the mesh plate, and a distance between a lower end of the push plate and an upper end of the table being smaller than the thickness of the mesh plate.

7. The automated bending machine of claim 6, wherein the pusher further comprises a guide post, a slider, and a pushing cylinder; the guide post is fixed on the frame along the front-back direction, a sliding hole is formed in the front-back of the sliding block in a penetrating mode, and the sliding hole is connected to the guide post in a front-back sliding mode; the pushing cylinder is fixed on the frame and is used for pushing the sliding block to slide; the push plate is provided with a connecting plate extending forwards, and the connecting plate is fixed at the upper end of the sliding block.

8. An automatic bending machine according to any one of claims 1 to 7, further comprising a locating element provided at the left and/or right end of the frame, the locating element being located on the front side of the V-shaped slot; the distance between the upper end of the locating piece and the upper end of the workbench is greater than or equal to the thickness of the screen plate, and the distance between the lower end of the locating piece and the upper end of the workbench is smaller than the thickness of the screen plate.

9. An automatic bending machine according to claim 8, further comprising a clamping member comprising a support plate, a clamping bolt and a C-shaped clamping arm, the support plate being secured to the frame or the table; the clamping bolt is in threaded connection with the lower end of the clamping arm, and a clamping area for clamping the locating piece on the supporting plate is formed between the clamping bolt and the upper end of the clamping arm.

10. An automatic bending machine according to any one of claims 1 to 7, wherein a V-shaped die plate is embedded in the V-shaped groove, and extension parts horizontally extend outwards from the front side and the rear side of the V-shaped die plate, and the upper end surfaces of the extension parts are flush with the upper end surfaces of the workbench;

the workbench comprises a workbench body, a first supporting piece and a second supporting piece; the table body is of a strip-shaped structure, the table body is detachably arranged on the rack, and the V-shaped groove is formed at the upper end of the table body; the first supporting piece and the second supporting piece are fixed on the frame, the first supporting piece and the second supporting piece are distributed on the front side and the rear side of the table body, and the upper end face of the first supporting piece, the upper end face of the second supporting piece and the upper end face of the table body are mutually parallel and level;

the bending cutter comprises a cutter rest and at least two cutter bodies, and the cutter rest can be connected to the frame in an up-down sliding manner; the cutter bodies are detachably arranged at the lower end of the cutter rest, and at least two cutter bodies are sequentially connected in the left-right direction;

the lower extreme of cutter body is bent and is formed with the kink, the lateral surface of kink is equipped with and is used for holding the groove of stepping down of vertical muscle on the otter board.