CN104646552B - Material pulling mechanism of bending machine - Google Patents

Abstract

The invention relates to a material poking mechanism of a bending machine, which comprises: a feeding platform; a material stirring bracket; the material shifting guide mechanism is used for guiding the material shifting support to move horizontally; the material shifting driving mechanism is arranged between the feeding platform and the material shifting bracket and is used for driving the material shifting bracket to translate; the swinging frame is pivoted on the material shifting bracket and translates along with the material shifting bracket; the swing driving mechanism is arranged between the material shifting bracket and the swing frame and drives the swing frame to swing between an avoiding position and a pushing position; the pushing piece is arranged on the swing frame and swings along with the swing frame; when the swing frame is at the avoiding position, the pushing piece is far away from the feeding platform so that the pushing piece can avoid the workpiece to be bent during translation; when the swing frame is at the pushing position, the pushing piece is close to the feeding platform so that the pushing piece can resist the workpiece to be bent and push the workpiece to be bent to move horizontally when moving horizontally. The material poking mechanism disclosed by the invention is simple in structure, and can be used for automatically conveying workpieces to be bent so as to reduce the labor intensity and improve the working efficiency.

Description

Dial mechanism of bending machine

technical field

The invention relates to a material shifting mechanism of a bending machine.

Background technique

As a compact heat exchanger, the tube-fin heat exchanger has a wide range of applications in the refrigeration industry. The forming process of the heat exchanger mainly has the following three forming processes: tube bending forming (forming U-shaped tubes), mechanical expanding tube forming (realizing tube-fin connection), tube bundle bending forming (forming L-shaped or G-shaped heat exchangers) ). Tube bundle bending is one of the key processes in heat exchanger forming, which has an important impact on the performance of heat exchangers.

When the tube bundle is bent and formed, the heat exchanger is first transported to the specified position, so that the part to be bent is close to the bending die (roller) with a predetermined bending radius, and then clamped on both sides of the bending die The heat exchanger makes the clamping parts on one side or both sides rotate and move around the bending die, so the heat exchanger is extruded into a specified bending angle along the bending die. More specifically, the heat exchanger is fed into the bending machine longitudinally in a flat state, and then the part to be bent is placed against the bending die in the transverse direction, the bending die is placed above the part to be bent, and the front end of the heat exchanger is clamped Between the bending die and the clamping die (lower platen), while the tail end is supported by the bottom plate (follower plate), the actuator is driven to rotate the bending die and the clamping die at a specified angle as required, and the clamping die is lifted to make The front section of the heat exchanger rotates around the center of the bending die to form along the bending die.

In the traditional tube bundle bending forming process, most of the heat exchangers to be bent are manually transported to the bending die in the main machine of the bending machine through the input end of the main machine of the bending machine, and then bent and formed. The working efficiency of the method is low and the labor intensity is high.

Contents of the invention

The object of the present invention is to provide a material shifting mechanism of a bending machine with simple structure and reasonable design.

The above-mentioned purpose is achieved through the following technical solutions:

A material shifting mechanism of a bending machine, comprising: a feeding platform for supporting workpieces to be bent; a material shifting bracket; a material shifting guide mechanism set between the feeding platform and the shifting bracket for guiding the shifting of materials The bracket moves in translation; the material shifting drive mechanism is set between the feeding platform and the material shifting bracket to drive the material shifting bracket to move in translation; the swing frame is pivoted on the material shifting bracket and follows the material shifting bracket to move in translation; the swing driving mechanism is set Between the shifting bracket and the swing frame, the swing frame is driven to swing between an avoidance position and a push position; the push piece is arranged on the swing frame and swings with the swing frame, and the push piece can be moved away from or close to when the swing frame swings Feeding platform; when the swing frame is in the avoidance position, the push piece is far away from the loading platform so that the push piece avoids the workpiece to be bent during translation; when the swing frame is in the pushing position, the push piece is close to the loading platform so that the push piece is in translation It can resist the workpiece to be bent and push the workpiece to be bent to move in translation.

Compared with the prior art, the present invention has the following advantages: the material shifting mechanism disclosed by the present invention has a simple structure, and can automatically transport workpieces to be bent to reduce labor intensity and improve work efficiency.

Description of drawings

Fig. 1 shows the three-dimensional schematic view of the feeding assembly of the bending machine applied in the present invention;

Fig. 2 shows the three-dimensional exploded schematic view of the feeding assembly of the bending machine applied in the present invention;

Fig. 3 shows the three-dimensional schematic diagram after the feeding assembly of the bending machine applied in the present invention hides the feeding platform and the feeding mechanism;

Fig. 4 and Fig. 5 respectively show the three-dimensional schematic diagram of two different angles of the present invention;

Figure 6 shows a perspective exploded view of the present invention;

Fig. 7 shows the top view of the feeding assembly of the bending machine applied in the present invention;

Fig. 8 is a sectional view of A-A of Fig. 7, wherein the feeding platform is in the feeding position;

Fig. 9 is a sectional view of A-A of Fig. 7, wherein the loading platform is in the discharging position;

Fig. 10 is the B-B sectional view of Fig. 8;

Fig. 11 is the C-C sectional view of Fig. 9;

Fig. 12 shows a schematic diagram of the present invention in a pushing position;

Fig. 13 shows a schematic diagram of the present invention in an avoidance position;

Fig. 14, Fig. 15 and Fig. 16 show schematic diagrams of the working principle of the feeding assembly of the bending machine applied in the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

A feeding assembly of a bending machine as shown in FIGS. On the loading frame 1 and can push the loading and conveying component 3 of the workpiece to be bent carried on the loading platform;

A feeding elevating mechanism 4 is provided between the feeding frame 1 and the feeding platform 2, and the feeding elevating mechanism 4 drives the feeding platform 2 to rise or fall between a feeding position and a discharging position; lower than the discharge position;

The feeding platform 2 or the feeding frame 1 is provided with a material shifting mechanism 5 that can push the workpiece to be bent carried on the feeding platform 2;

The shifting mechanism 5 pushes the workpiece to be bent at the wrong time with the feeding and conveying assembly 3;

When the feeding platform 2 is at the feeding position, the workpiece to be bent is pushed by the feeding conveying assembly 3;

When the feeding platform 2 is in the discharging position, the workpiece to be bent is pushed by the material shifting mechanism 5 .

The material shifting mechanism 5 and the feeding and conveying assembly 3 push the workpiece to be bent at the wrong time, which means pushing the workpiece to be bent at a non-simultaneous time.

The workpiece to be bent may be, for example, a heat exchanger to be bent.

The feeding assembly of the bending machine according to the present invention carries the workpiece to be bent (for example, a heat exchanger to be bent) on the loading platform and is pushed by the material shifting mechanism or the feeding and conveying assembly to realize automation Transportation can reduce labor intensity and improve work efficiency; and the feeding platform is driven up or down by the feeding lifting mechanism to adjust the height of the feeding platform, so that the feeding platform can be accurately docked with the main machine of the external bending machine, so that the loading The whole process of conveying the workpiece to be bent from the material component to the main machine of the external bending machine and receiving materials from the main machine of the external bending machine is carried out stably and smoothly, which solves the problem that the loading platform cannot be connected with the external machine due to the existence of various errors such as assembly errors. The problem of accurate docking of the main machine of the bending machine; in addition, the use of independent material shifting mechanism and feeding and conveying components to realize that the feeding platform can still push the workpiece to be bent normally at different heights.

In order to overcome the problems existing in the manual feeding method, mechanical automatic feeding equipment has appeared, but due to the existence of various errors such as assembly errors, it is difficult for the output end of the existing mechanical automatic feeding equipment to be accurately connected with the main machine of the bending machine. After assembly, the output end of the existing mechanical automatic feeding equipment is always higher or lower than the input end of the main machine of the bending machine. heater.

The feeding platform 2 has a feeding conveying path 21, and the workpiece to be bent is pushed by the dial mechanism 5 or the feeding conveying assembly 3 to move along the feeding conveying path 21; the direction shown by the arrow in Figure 1 is the workpiece to be bent Along the pushing direction of the feeding conveying path 21.

When the loading platform 2 rises or falls, the loading platform 2 can be kept away from or close to the feeding conveying assembly 3; 3 Push the workpiece to be bent; when the loading platform 2 is in the discharging position, the loading platform 2 is far away from the loading and conveying component 3 .

The feeding conveyor assembly 3 includes a feeding conveyor belt 31, a feeding roller group 32 and a feeding roller driving motor 33, the feeding conveyor belt 31 is set on the feeding roller group 32, and the feeding roller group 32 is driven by the feeding roller The motor 33 drives the rotation;

This loading platform 2 is provided with the avoidance port 22 corresponding to the position of the feeding conveying assembly 3, when the feeding platform 2 is in the feeding position, the feeding conveyor belt 31 exposes the feeding platform 2 through the avoidance port 22 and can be connected with The workpieces to be bent carried on the loading platform 2 are frictionally contacted to drive the workpieces to be bent to be fed along the feeding conveying path 21. In this embodiment, when the loading platform 2 is at the feeding position, the feeding conveyor belt 31 The upper layer (that is, the load layer) is basically flat on the top surface of the loading platform 2 (that is, the bearing surface for carrying the workpiece to be bent). The feeding and conveying assembly described in the present invention has a simple structure. Since the feeding and conveying assembly will not follow the lifting of the feeding platform, the feeding platform will move relative to the feeding and conveying assembly during the process of rising or falling. To ensure that the feeding platform and the feeding and conveying The avoidance port is designed on the loading platform for the combination of components, the design is reasonable, the structure is simple, and the layout space of the whole machine is reduced.

A feeding conveyor belt 31, a feeding roller group 32 and a feeding roller driving motor 33 form a set of feeding conveying unit, the feeding conveying assembly 3 includes multiple sets of feeding conveying units, and multiple sets of feeding conveying units are arranged There are two rows at intervals, and the feeding and conveying units of each row are arranged at intervals along the feeding and conveying path 21 . In this embodiment, there are six sets of feeding and conveying units, three sets in each row, and six avoidance openings 22 are provided on the feeding platform 2, and one avoiding opening 22 corresponds to the position of a set of feeding conveying units for feeding the set of materials. The infeed belt of the conveyor unit is exposed. The multi-set feeding and conveying unit of the present invention can push the workpieces to be bent carried on the feeding platform more effectively and steadily.

The feeding lifting mechanism 4 includes four feeding turbine screw lifters 41 installed on the feeding frame and a feeding lifting motor 42 for driving the four feeding turbine screw lifters 41 to move synchronously, and the feeding platform 2 is square, and four feeding turbine screw lifts 41 are distributed on the four corners of the feeding platform 2. Between the feeding lifting motor 42 and the four feeding turbine screw lifts 41, four turbine screw lifts can be realized. Synchronous feeding transmission mechanism.

The liftable screw mandrels of four feeding turbine screw lifters 41 are pushed against the bottom of the feeding platform 2, and the feeding transmission mechanism includes three feeding lifting steering boxes 43 and seven feeding lifting transmission shafts 44, three upper The material lifting and turning boxes 43 are arranged at intervals along the line segment parallel to the feeding conveying path 21, and one of the feeding lifting and turning boxes 43 is located in the middle of the line segment, and the other two feeding lifting and turning boxes 43 are respectively located at the two ends of the line segment. The adjacent two feeding lifting steering boxes 43 are connected with a feeding lifting transmission shaft 44 respectively. The feeding lifting steering box 43 at the end cooperates with two feeding turbine screw elevators 41 respectively, and the worms that can input power of the feeding lifting steering box 43 at both ends and the corresponding two feeding turbine screw elevators 41 are respectively A feeding lifting transmission shaft 44 is connected.

The shifting mechanism 5 is located on the feeding platform 2;

The dialing mechanism 5 comprises a dialing bracket, a dialing guide mechanism arranged between the loading platform 2 and the dialing rack for guiding the translation of the dialing rack, and a dialing guide mechanism arranged between the feeding platform and the dialing rack for The dialing drive mechanism that drives the dialing bracket to move in translation, the swing frame that is pivotally arranged on the dialing rack and follows the shifting rack to translate, is arranged between the dialing bracket and the swinging frame to drive the swinging frame to an avoidance position (as shown in Figure 14 shown) and a push position (as shown in Figure 15), a swing drive mechanism that swings between the swing frame and a push piece 51 that is arranged on the swing frame and follows the swing frame. When the swing frame swings, the push piece 51 can be moved away from or close to the upper Material platform 2; the sliding direction of the material shifting bracket is parallel to the feeding conveying path;

When the swing frame is in the avoidance position, the push piece 51 is far away from the loading platform 2 so that the push piece 51 avoids the workpiece to be bent during translation;

When the swing frame is in the push position, the push piece 51 is close to the feeding platform 2 so that the push piece 51 can resist the workpiece to be bent and push the workpiece to be bent to translate when moving in translation.

The material shifting mechanism disclosed by the invention has a simple structure and can rise or fall together with the feeding platform. The material shifting mechanism cooperates with the feeding conveying assembly to realize that the feeding platform can still push the workpiece to be bent normally at different heights.

The swing driving mechanism includes a swing cylinder 52, and the cylinder body of the swing cylinder 52 is hinged to the material dialing bracket;

The swing frame includes a shifting shaft 53, a shifting arm 54 and a shifting link 55. The shifting shaft 53 is pivotally arranged on the shifting bracket. The shifting arm 54 includes a fixed end 541 and an extended end 542. The fixed end 541 of the dialing arm is fixed on the dialing shaft 53, the extended end 542 of the dialing arm is used to install the pusher 51, and one end of the dialing connecting rod 55 is fixed on the dialing shaft 53. The other end of material connecting rod 55 is hinged with the piston rod of swing cylinder 51. It is easy to control and adjust by adopting swing cylinder drive.

A swing frame, a swing driving mechanism and a push piece 51 form a set of material shifting unit, two sets of material shifting units are arranged on the material shifting bracket, and the two sets of material shifting units are symmetrically arranged on both sides of the material shifting bracket. Setting two sets of material pushing units can realize the pushing of workpieces to be bent with different lengths and sizes, which has a wide range of applications and strong flexibility.

When the swing frame is in the avoidance position, the distance 511 between the push piece 51 and the loading platform is greater than the thickness h of the workpiece to be bent;

When the swing frame is at the pushing position, the distance 512 between the push piece 51 and the loading platform is smaller than the thickness h of the workpiece to be bent.

There are two pusher arms 54, the two pusher arms are arranged in parallel and spaced apart, a push rod beam 56 is installed between the extended ends of the two pusher arms, and the push piece 51 is installed on the push rod crossbeam 56;

The material shifting bracket is in the shape of a gantry, and includes a material shifting horizontal frame 57 and two material shifting vertical frames 58 across both sides of the feeding platform, and a material pushing vertical frame 58 is respectively arranged at the two ends of the material shifting horizontal frame 57;

The material shifting guide mechanism includes two feeding guide rails 59 parallel to the feeding conveying path 21, a feeding guide rail 59 is respectively arranged on both sides of the feeding platform 2, a material shifting stand 58 cooperates with a feeding guide rail 59, each The bottom of the material shifting stand 58 is provided with a feeding slider 581 slidably nested on its corresponding feeding guide rail 59;

This swinging drive mechanism comprises a dialing drive motor 61, a first dialing speed reducer 62, a second dialing speed reducer 63, a dialing speed reducer connecting shaft 64, a first dialing drive shaft 65, a first dialing speed reducer Two dial drive shafts 66, a first dial gear 67, a second dial gear 68, a first dial rack 69 and a second dial rack 60;

The shifting drive motor 61, the first shifting speed reducer 62 and the second shifting speed reducer 63 are fixed on the shifting bracket, and the first shifting speed reducer 62 and the second shifting speed reducer 63 are respectively arranged on the shifting the two ends of the horizontal frame 57;

The first shifting rack 69 and the second shifting rack 60 are respectively fixed on both sides of the feeding platform 2, and the first shifting rack 69 and the second shifting rack 60 are parallel to the feeding conveying path 21 ;

This first material shifting reducer 62 has an input end, a first output end and a second output end, the input end of the first material shifting speed reducer is connected with the output shaft of the material shifting drive motor 61, the first material shifting deceleration The first output end of the machine is connected with one end of the first material shifting drive shaft 65, the first material shifting gear 67 is installed on the other end of the first material shifting drive shaft 65, the first material shifting gear 67 is connected with the first material shifting rack 69 engaged;

This second dialing speed reducer 63 has an input end and an output end, and the input end of the second dialing material speed reduction machine 63 is connected with the second output end of the first dialing material speed reduction machine 62 through the dialing material speed reduction machine connecting shaft 64 so that Transmission power, the output end of the second dialing gear reducer 63 is connected with an end of the second dialing drive shaft 66, the second dialing gear 68 is installed on the other end of the second dialing drive shaft 66, the second dialing gear 68 Engage with the second shifting rack 60 .

The loading platform 2 is provided with two spaced workpiece guide rods 23 to be bent, the length direction of the two workpiece guide rods 23 is parallel to the feeding conveying path 21, and the two workpiece guide rods to be bent limit the feeding conveyance The distance between the path 21 and the guide rods 23 of the two workpieces to be bent can be equal to the width of the workpiece to be bent.

The working principle of the present invention is as follows:

As shown in Figure 14, the loading platform is first lowered to the feeding position, at this time, the workpiece 8 to be bent carried on the loading platform is pushed by the loading and conveying assembly 3 in the direction indicated by the arrow in Figure 14;

As shown in Figure 15, the feeding platform is driven by the feeding lifting mechanism to rise to the discharge position. At this time, the feeding platform is level with the receiving part 71 of the external bending machine 7, and the material to be bent carried on the feeding platform The workpiece 8 is pushed toward the external bending machine 7 by the material shifting mechanism 5 along the direction indicated by the arrow in Figure 15, and the feeding is completed;

During the process of pushing the workpiece 8 to be bent by the feeding and conveying assembly 3, the swing frame of the shifting mechanism 5 can be placed in an avoidance position (as shown in Figure 14), so that the pusher can avoid the moving workpiece 8 to be bent; or , when the feeding and conveying assembly 3 pushes the workpiece 8 to be bent to the set position and does not reach the material shifting mechanism 5, at this time, the material shifting mechanism 5 can be moved in the direction opposite to the direction indicated by the arrow in Figure 14, and the material shifting Mechanism 5 swing frame is in avoidance position;

As shown in Figures 15 and 16, the workpiece 8 to be bent can be pushed by one set of two sets of material pushing units, wherein, Figure 15 shows that the workpiece 8 to be bent is pushed by a set of material pushing units positioned at the front side. Workpiece 8, Fig. 16 shows that the workpiece 8 to be bent is pushed by a set of material shifting unit positioned at the rear side, and when the workpiece 8 to be bent is pushed by a set of material shifting unit positioned at the rear side, the workpiece 8 positioned at the front side The swing frame of a set of material shifting unit is in the avoidance position.

Claims (7)

1. the material toggling mechanism of a bender, it is characterised in that including:

Material loading platform, treats bending workpieces for supporting；

Material toggling support；

Material toggling guiding mechanism, is located between material loading platform and material toggling support for guiding material toggling support to translate；

Material toggling drive mechanism, is located between material loading platform and material toggling support for ordering about the translation of material toggling support；

Swing span, is hubbed on material toggling support and follows the translation of material toggling support；

Swing driving mechanism, be located between material toggling support and swing span order about swing span one dodge position and One pushes swing between position；

Push piece, be located on swing span and follow swing span swing, swing span swing time can make push piece away from or Near material loading platform；

Swing span is in when dodging position, push piece away from material loading platform so that push piece translation time avoid treating bending Workpiece；

When swing span is in propelling movement position, push piece near material loading platform so that push piece can be kept out wait to roll over when translation Curved workpiece promotion treat that bending workpieces translates.

The material toggling mechanism of bender the most according to claim 1, it is characterised in that:

This swing driving mechanism includes oscillating cylinder, and the cylinder body of this oscillating cylinder is articulated with material toggling support；

This swing span includes material toggling rotating shaft, material toggling arm and material toggling connecting rod, and this material toggling rotating shaft is hubbed at material toggling support On, this material toggling arm includes fixing end and an overhanging end, and the fixing end of this material toggling arm is fixed in material toggling rotating shaft, The overhanging end of this material toggling arm is used for installing push piece, and one end of this material toggling connecting rod is fixed in material toggling rotating shaft, this group The other end of material connecting rod is hinged with the piston rod of oscillating cylinder.

The material toggling mechanism of bender the most according to claim 2, it is characterised in that:

This material toggling arm has two, and two material toggling arm parallel interval are arranged, pacify between the overhanging end of two material toggling arms Equipped with a push rod crossbeam, push piece is arranged on push rod crossbeam.

4. according to the material toggling mechanism of the bender described in claim 1 or 2 or 3, it is characterised in that: a pendulum Moving frame, a swing driving mechanism and a push piece form a set of material toggling unit, and material toggling support is provided with two set material togglings Unit, two set material toggling unit are symmetrically arranged in the both sides of material toggling support.

5. according to the material toggling mechanism of the bender described in claim 1 or 2 or 3, it is characterised in that:

When swing span is in and dodges position, push piece and material loading platform distance are more than treating bending workpieces Thickness；

When swing span is in propelling movement position, push piece and material loading platform distance are less than treating bending workpieces Thickness.

6. according to the material toggling mechanism of the bender described in claim 1 or 2 or 3, it is characterised in that:

There is on this material loading platform a feeding transport path, treat that bending workpieces is promoted along feeding transport road by push piece Move in footpath；

This material toggling support is gantry rack-like, including the material toggling crossbearer being across material loading platform both sides and two material togglings Stand, the two ends of material toggling crossbearer are respectively provided with a material toggling stand；

This material toggling guiding mechanism includes two loading guide being parallel to feeding transport path, the both sides of material loading platform Being respectively provided with a loading guide, a material toggling stand coordinates with a loading guide, and the bottom of each material toggling stand is provided with The feeding slide block being nested in slippingly on the loading guide of its correspondence.

The material toggling mechanism of bender the most according to claim 6, it is characterised in that:

This swing driving mechanism includes that a material toggling drives motor, one first material toggling reductor, one second material toggling to subtract Speed machine, a material toggling reductor connecting shaft, one first material toggling drive shaft, one second material toggling drive shaft, one first Material toggling gear, one second material toggling gear, one first material toggling tooth bar and one second material toggling tooth bar；

This material toggling drives motor, the first material toggling reductor and the second material toggling reductor to be fixed on material toggling support, And first material toggling reductor and the second material toggling reductor be respectively arranged in the two ends of material toggling crossbearer；

This first material toggling tooth bar and the second material toggling tooth bar are separately fixed at the both sides of material loading platform, and the first material toggling Tooth bar and the second material toggling tooth bar are parallel to feeding transport path；

This first material toggling reductor has an input, one first outfan and one second outfan, first group The input of material reductor drives the output shaft of motor to couple with material toggling, the first output of the first material toggling reductor End couples with one end of the first material toggling drive shaft, and the first material toggling gear is installed on another of the first material toggling drive shaft End, the first material toggling gear and the engagement of the first material toggling tooth bar；

This second material toggling reductor has an input and an outfan, the input of the second material toggling reductor with Second outfan of the first material toggling reductor is coupled by material toggling reductor connecting shaft to transmit power, second group The outfan of material reductor and one end of the second material toggling drive shaft couple, and the second material toggling gear is installed on second group The other end of material drive shaft, the second material toggling gear and the engagement of the second material toggling tooth bar.