CN111703687A

CN111703687A - Automatic change work or material rest assembly

Info

Publication number: CN111703687A
Application number: CN202010822858.1A
Authority: CN
Inventors: 桑逢男
Original assignee: Ningbo Shijia Intelligent Equipment Co ltd
Current assignee: Ningbo Shijia Intelligent Equipment Co ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2020-09-25

Abstract

The invention discloses an automatic material rack assembly, which comprises a material rack capable of horizontally and directionally moving; the material rack comprises a material rack chassis, the left end and the right end of the material rack chassis are respectively provided with a material rack left side wall and a material rack right side wall, and gravity reset type material holders are oppositely arranged on the material rack left side wall and the material rack right side wall; the gravity reset type material supporting device comprises a supporting piece and a fixing piece, wherein the outer side end of the supporting piece is connected with a lower material limiting piece, a positioning structure matched with the shape of the end part of the lower side surface of the material is arranged on the lower material limiting piece, the inner side end of the fixing piece is fixed, and a rotating pin hole is formed in the outer side end of the fixing piece in a penetrating mode; the middle part of the supporting piece is also provided with a rotating pin hole, and the fixing piece is rotatably connected with the supporting piece through a rotating pin of the supporting piece. The invention has the beneficial effects that: the gravity reset type material supporting device is adopted to realize the function of automatic reset, and the accurate alignment system is adopted to realize automatic positioning, so that the automatic assembly line has the characteristics of high automation and high precision.

Description

Automatic change work or material rest assembly

Technical Field

The invention relates to the field of production auxiliary facilities, in particular to an automatic material rack assembly.

Background

Chinese patent document CN205254960U discloses a "dust-proof material rack for storing automobile stamping plates" in 2016, 5, 26, which includes a rectangular frame body; the rectangular frame body is provided with a plurality of layers of brackets at intervals from top to bottom, and a plurality of zipper hooks are arranged on two long edges at the top of the rectangular frame body at intervals; the bracket is composed of a front supporting rod and a rear supporting rod which are arranged on the rectangular frame body in a front-back parallel mode, and a plurality of supporting rods which are arranged on the front supporting rod and the rear supporting rod in a parallel spaced mode; and a plurality of reinforcing ribs are arranged at the top of the rectangular frame body. The invention has the advantages of simple and practical three-dimensional structure and high space utilization rate. The zipper hook at the top can hang the pull curtain, so that the cleanliness of the plate can be greatly improved, and the plate which is not used up in one-time production can be put into a rack again for storage, thereby ensuring the cleanliness. The whole structure is welded by square steel, the support rods are arranged in the middle of each layer of the bracket to store the plates, different support rod densities are set according to the sizes of the plates, the storage of the plates with different specifications and sizes can be met, and the operation of taking and placing the plates by a forklift is facilitated. This type of traditional work or material rest has generally adopted multilayer structure in order to practice thrift area, and the material has all been placed to every layer. While the automotive industry has entered into automated manufacturing, the shortcomings of conventional stacks have emerged, importantly, the assembly robot is not able to manually and flexibly remove material from the stacks. In order to adapt to the requirement of automated production, can reform transform the work or material rest into the upper end open, the manipulator snatchs and takes out upwards behind the material of the top. The material is always placed on a bearing surface when placed on a material rack, small-sized materials can be a bearing platform, large-sized materials are generally supported by material supports, and horizontal projections of the material supports and the materials are partially overlapped when the material supports and the materials are in a working state, so that the material supports on the upper layer interfere with the materials on the lower layer in a multilayer material rack. Meanwhile, the position accuracy of the material rack beside the assembly line is not high, the grabbing points of the mechanical arms for grabbing materials on different material racks are different, and even different materials on the same material rack are different. Theoretically, when the arm snatched the material, it is the best to snatch the point and be located material focus department, and secondly the arm that specially establishes snatchs the point on the material also, in addition snatch the point, perhaps atress is inhomogeneous when leading to the material installation, perhaps leads to snatching and causes material surface defect, will all form into the quality defect or the quality hidden danger of assembly finally, causes the influence to the whole car quality. And the traditional material frame can not meet the requirement of position precision at all. Therefore, the existing traditional material rack cannot meet the requirements of high automation and high precision of the current automatic assembly production line.

Disclosure of Invention

Based on the problems, the invention provides an automatic material rack assembly, which adopts a gravity reset type material supporting device to realize the automatic reset function, adopts an accurate alignment system to realize automatic positioning, and has the characteristics of high automation and high precision in cooperation with an automatic assembly production line.

In order to realize the purpose of the invention, the invention adopts the following technical scheme: an automatic material rack assembly comprises a material rack capable of horizontally and directionally moving; the material rack comprises a material rack chassis, the left end and the right end of the material rack chassis are respectively provided with a material rack left side wall and a material rack right side wall, and gravity reset type material holders are oppositely arranged on the material rack left side wall and the material rack right side wall; the gravity reset type material supporting device comprises a supporting piece and a fixing piece, wherein the outer side end of the supporting piece is connected with a lower material limiting piece, a positioning structure matched with the shape of the end part of the lower side surface of the material is arranged on the lower material limiting piece, the inner side end of the fixing piece is fixed, and a rotating pin hole is formed in the outer side end of the fixing piece in a penetrating mode; the middle part of the supporting piece is also provided with a rotating pin hole, and the fixing piece is rotatably connected with the supporting piece through a rotating pin of the supporting piece; the inner side end of the supporting piece is connected with a balancing weight; the material rack tray is arranged on the moving part, a material rack limit stop is convexly arranged on the upper surface of the material rack tray along the left-right direction, and the rear side edge of the material rack chassis is tightly attached to the material rack limit stop; at least the gravity reset type material supporting device at the uppermost end is provided with a laser ranging sensor; the material rack is provided with a control center, and the control center is in signal connection with the laser ranging sensor and a mechanism for driving the material rack to move horizontally and directionally.

The automatic material rack assembly designed by the technical scheme comprises a material rack and also can comprise a material rack tray, wherein the material rack tray is horizontally arranged on a moving part, such as a conveying belt, a conveying track and the like, so that the material rack assembly can be ensured to directionally move along the horizontal direction. The material rack is placed on the material rack tray and is taken and placed through lifting or a forklift. The upper surface of work or material rest tray is equipped with work or material rest limit stop to bellied about following, and work or material rest limit stop is hugged closely to the back side on work or material rest chassis, consequently can ensure that the work or material rest moves along with the work or material rest tray orientation, and whenever, the position of the direction of depth of work or material rest is unchangeable all the time. If the moving part is integrated with the material rack, the material rack tray and the material rack limit stop can be omitted. The work or material rest includes the work or material rest chassis, like traditional structure, the work or material rest tray generally sets up to the rectangle, and both ends respectively are equipped with work or material rest left side wall and work or material rest right side wall about the work or material rest chassis to at work or material rest left side wall and work or material rest right side wall mounting have gravity reset formula to hold in the palm the glassware. The gravity reset type material supporting device usually takes a plurality of material supporting devices as a group, and the position layout is suitable for the material supporting state. For example, for long rod-shaped materials, two ends of the material in the length direction, i.e., the left side wall and the right side wall of the rack, are usually disposed one by one, and are arranged in opposite directions. The gravity reset type material supporting device comprises a supporting piece located in the outer side direction and a fixing piece located in the inner side direction. The inner ends of the fixing pieces are usually fixed and can be fixed on the upright columns at the end parts of the material rack as required if the fixing pieces are used on the material rack. The outer side end of the fixing piece is a free end, and a rotating pin hole is arranged along the horizontal direction; similarly, the middle part of the supporting part is also provided with a rotating pin hole along the horizontal direction. The rotating pin of the supporting piece simultaneously penetrates through the two rotating pin holes to rotatably connect the outer side end of the fixing piece with the middle part of the supporting piece. In order to adapt the shape of the end of the material, the outer end of the support member is usually provided with a lower material limiting member, and the end of the material is arranged in the positioning structure of the lower material limiting member in a gravity-adaptive manner. The inner end of the supporting piece is connected with a balancing weight. On the whole, the gravity reset type material supporting device forms a lever structure: the fulcrum of the lever is a support rotating pin; the support member between the support member rotating pin and the material lower limiting member forms a force arm at one side of the lever, and the force is the gravity of the material distributed on the gravity reset type material supporting device; the force arm on the other side of the lever is formed by the support piece between the support piece rotating pin and the balancing weight, and the force is the gravity borne by the balancing weight. When the moments on the left side and the right side of the fulcrum are balanced, the supporting piece is in a working state, and materials can be stably supported on the supporting piece; when the mechanical arm takes away the materials from bottom to top, the moment balance is broken, the force arm rotates, the outer side of the supporting piece rises upwards, the inner side falls downwards until the balancing weight is in a vertical state at the lowest position, the supporting piece is in a reset state at the moment, interference of the materials below in an ascending mode disappears, the mechanical arm can continue to grab the materials below, and finally all the materials on the multilayer material rack can be taken away in sequence from top to bottom. The parameters of the lever structure, such as the moment arm and the moment, are determined by self-calculation according to actual needs by technicians in the field, and can be changed in necessary adaptability according to different materials. The material rest is multilayer, and the material placement position of each layer is upwards the same about. Install laser rangefinder sensor on the gravity that the uppermost end resets formula holds in the palm the glassware, can install the downside at spacing piece under the material for example, can not disturb and place the material, and the signal of range finding laser also can not blockked the interference. The irradiation direction of the laser light is the direction of the laser distance measuring sensor facing the laser distance measuring sensor. And a control center is arranged on the material rack, and the signal of the laser ranging sensor can be transmitted to the control center. And the control center is also in signal connection with a mechanism for driving the material rack to horizontally and directionally move, such as a roller motor, a transmission belt motor and the like. When the mechanical arm extends out to grab a material, the laser ejection direction of the laser ranging sensor is firstly stopped below the material, the laser rangefinders on two sides can measure the distance from the laser rangefinder to the mechanical arm and transmit information to the control center, the control center compares the distance data on two sides, the accurate position parameter of the mechanical arm between a left gravity reset type material supporting device and a right gravity reset type material supporting device can be calculated, the accurate position parameter is compared with a target parameter, the direction to which the material rack needs to move is further calculated, the driving action data is transmitted to a mechanism for driving the material rack to move horizontally and directionally to be executed, the material rack is accurately positioned to a certain point, the mechanical arm does not need to move leftwards and rightwards, the material can be clamped at a standard position, and high-speed automation and high.

Preferably, the inner end of the support member is provided with a rotation pin hole, the upper part of the balancing weight is also provided with a rotation pin hole, and the balancing weight and the support member are rotatably connected through a balancing weight rotation pin. In order to enable the support piece to be in the best vertical state in the reset state, the counterweight block and the inner side end of the support piece are designed to be in rotating connection, so that the counterweight block is ensured to be in the lowest position necessarily when the support piece is in the reset state, and the support piece is necessarily in the vertical state.

Preferably, the support piece is fixed with a working posture limiting piece; when the supporting piece rotates to the working posture around the rotating pin of the supporting piece, the limiting part of the working posture is limited with the lower end of the fixing piece. Spacing that the lower extreme of working attitude locating part and mounting formed can help support piece to stabilize at the working attitude, need not to rely on lever structure's moment of force balance to realize stably, can show raise the efficiency.

Preferably, the working attitude limiting member is rod-shaped, and the axial direction of the working attitude limiting member is parallel to the axial direction of the rotating pin of the support member. From the manufacturing perspective, the design of the rod-shaped working posture limiting piece is most convenient and has the most obvious effect.

Preferably, the lower end of the fixing part is provided with an upper concave working posture limiting part matching groove, and the position and the size of the working posture limiting part matching groove are matched with the limiting part of the working posture limiting part. The scheme can ensure that the fixing piece in the working posture is stably limited by the matching groove.

Preferably, the support piece is fixed with a reset posture limiting piece; when the supporting piece rotates to a vertical posture around the rotating pin of the supporting piece, the upper ends of the reset posture limiting piece and the fixing piece are limited. On the other hand, the support piece can be designed with a reset posture limiting piece, when the material is taken away by the mechanical arm quickly, the support piece can rotate around the rotation pin of the support piece and swing in a reciprocating mode due to rotation inertia, and new interference can be caused to taking out of the lower-layer material. The swinging can be eliminated by adopting the reset attitude limiting part, so that the supporting part can be quickly positioned.

Preferably, the support member is 2 or more thin plates disposed oppositely, the length direction of the thin plates extends in a direction perpendicular to the axial direction of the support member rotation pin, and the thickness direction is parallel to the axial direction of the support member rotation pin. This scheme adopts the sheet metal structure for subtracting heavy design, under the similar prerequisite of atress intensity, has alleviateed the gravity of lever one side, and consequently the balancing weight of lever opposite side also can subtract thereupon and heavily, and the weight that whole gravity reset formula held in the palm the glassware will descend, finally can help the weight reduction of whole work or material rest.

Preferably, the upper parts of the left side wall and the right side wall of the material rack are connected with safety rods through rocker arms, and the axial directions of the safety rods are perpendicular to the material placing direction; the rocker arm drives the safety rod to swing between a horizontal position at a low position and a vertical position at a high position, and the safety rod stretches over the material when being at the low position. The scheme is a safety scheme. Before the safety rod is not designed, the upper part of the material rack is unprotected, and the uppermost material can be separated from the positioning structure of the gravity reset type material carrier and fall off due to bumping of the material rack in the moving process. By using the scheme, the safety rod stretches over the materials at the top, and the materials at the top are prevented by the safety rod when bumping, causing accidental separation and moving upwards by selecting the length of the proper rocker arm.

Preferably, the left side wall and the right side wall of the material rack are fixedly connected with snap lock mounting arms, and the snap lock mounting arms and the rocker arms are locked through snap lock pairs. In order to keep the safety rod in a continuous locking state, the scheme adopts a hasp lock pair, the hasp lock is buckled when the material rack moves, the hasp lock is opened when the material rack arrives at a destination and begins to feed, the safety rod is turned up, and the upper limit of the material is cancelled.

Preferably, a positioning structure matched with the shape of the end part of the upper side surface of the material is arranged below the bumper. This solution is used to protect the top of the uppermost material end.

Preferably, a material lower limiting piece is fixed at a corresponding position on the bottom plate; and a material upper limiting piece is fixed below the outer side end of each supporting piece of each gravity reset type material supporting device.

In conclusion, the beneficial effects of the invention are as follows: the gravity reset type material supporting device is adopted to realize the function of automatic reset, and the accurate alignment system is adopted to realize automatic positioning, so that the automatic assembly line has the characteristics of high automation and high precision.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic structural diagram of the gravity reset type material supporting device of the invention.

Fig. 3 is a schematic structural view of another view of the gravity reset type material tray of the present invention.

Wherein: 1 work or material rest tray, 2 work or material rest limit stop, 11 support piece, 12 material lower limit piece, 13 mountings, 14 support piece rotating pin, 15 balancing weights, 16 balancing weights rotating pin, 17 working attitude locating parts, 18 working attitude locating part cooperation grooves, 19 gesture locating parts that reset, 31 work or material rest chassis, 32 work or material rest left side wall, 33 work or material rest left side wall, 34 laser rangefinder sensor, 35 control center, 36 rocking arm, 37 bumper beams, 38 hasp lock installation arm, 39 hasp lock is vice, 40 material upper limit piece.

Detailed Description

The invention is further described with reference to the following detailed description and accompanying drawings.

The embodiment is an automatic material rack assembly which is applied to a certain automobile assembly workshop. The material rack assembly is used for bearing a side pedal of a certain off-road vehicle. The work or material rest has 4 layers, and near side, well side, distal side 3 are all placed to every layer, and a work or material rest can bear 12 side pedals, cooperates the arm feed by car assembly line.

As shown in fig. 1, the automated stack assembly of this example includes a stack tray 1 and stacks. The material rack tray 1 is horizontally fixed on a rail car, and the rail car is parallel to the advancing direction of an automobile assembly line, so that the material rack tray 1 also synchronously advances and retreats along with the rail car. The upper surface far side of the material rack tray 1 is provided with a material rack limit stop 2 along the left and right direction in a protruding mode. The material rack comprises a rectangular material rack chassis 31, and a left material rack side wall 32 and a right material rack side wall 33 are respectively arranged at the left end and the right end of the material rack chassis 31. The rack left side wall 32 and the rack right side wall 33 in this example are formed by a plurality of longitudinal bars that are longitudinally fixed. Four corners below the material rack chassis 31 are respectively fixed with a footing, so that a gap is formed between the material rack chassis 31 and the material rack tray 1, and the forklift can operate the material rack tray. The rack chassis 31, the rack left side wall 32, the rack right side wall 33 and the bottom feet are formed by firmly welding steel materials such as channel steel and angle steel. Work or material rest limit stop 2 is hugged closely to work or material rest chassis 31's back side, consequently can ensure: the work or material rest moves along with work or material rest tray 1 orientation, and the work or material rest is unchangeable all the time in the degree of depth direction of work or material rest tray 1. And a corresponding number of gravity reset type material holders are oppositely arranged on the left side wall 32 and the right side wall 33 of the material rack.

As shown in fig. 2 and 3, the gravity return type material supporting device of this embodiment includes a supporting member 11 and a fixing member 13. The fixing members 13 of this embodiment are designed in a left-right pair, and have fixed ends at their inner ends, which can be fixed to the vertical rods forming the left side wall 32 or the right side wall 33 of the rack, and free ends at their outer ends, which are provided with horizontal rotation pin holes. The supporting member 11 of this embodiment is also formed by stamping a left flat steel and a right flat steel, and the outer end of the supporting member is fixed with a material lower limiting member 12. The lower material limiting piece 12 is provided with a positioning structure matched with the shape of the end part of the lower side surface of the material, namely a groove with an upward and outward opening in the embodiment, and one end of the side pedal is embedded in the groove in a matched mode during working. The inner end of the supporting member 11 is connected to the weight block 15. The middle part of the supporting member 11 is also provided with a horizontal rotating pin hole, and the rotating pin 14 of the supporting member simultaneously passes through the two rotating pin holes to rotatably connect the outer side end of the fixing member 13 with the middle part of the supporting member 11, so that the supporting member 11, the fixing member 13 and the counterweight 15 form a lever structure: one side is that the support 11 outside the support rotation pin 14 is used as the arm of force, the weight of the material on the material lower limiting member 12 is used as the force, and the other side is that the support 11 inside the support rotation pin 14 is used as the arm of force, and the weight of the balancing weight 15 is used as the force.

The inner end of the support member 11 is also provided with a rotation pin hole, the upper part of the counterweight 15 is also provided with a rotation pin hole, and the fixing member and the support member are rotatably connected through a counterweight rotation pin 16, so that the support member can be rotated to a perfect vertical state.

To provide the necessary limit, a working attitude limit piece 17 and a reset attitude limit piece 19 are fixed to the support 11. In this example, the operation position limiting member 17 is a round steel bar welded between the bottoms of the two flat steels of the supporting member 11, the axial direction is parallel to the axial direction of the rotating pin 15 of the supporting member, and the length is slightly larger than the width of the two sides of the fixing member 13. The lower end of the fixing member 13 is provided with a concave working attitude limiting member fitting groove 18, and the position and size of the working attitude limiting member fitting groove 18 are adapted to the limiting portion of the working attitude limiting member 15. When the material is put on the outer end of the supporting member 11, the supporting member 11 is forced to rotate, and when the material is in a horizontal position, the working posture limiting member 17 is limited by the working posture limiting member matching groove 18, so that the supporting member 11 is kept in a working posture. The reset posture limiting part 19 is also a round steel bar, is welded between the tops of the two flat steels of the support part 11, is also axially parallel to the axial direction of the rotating pin 15 of the support part, and has a length slightly larger than the width of the two sides of the fixing part 13. When the material is taken away, the support piece 11 rotates reversely under the action of the gravity of the counterweight, and when the material is in an optimal vertical state, the reset posture limiting piece 19 is limited by the upper end face of the fixing piece 13, so that the support piece 11 is kept in a vertical reset posture, and the interference of the mechanical arm in grabbing the pedal on the lower layer upwards is eliminated.

The side treads of the stacks in this example are arranged in 4 tiers and 3 columns. The side pedal of the lowest layer does not adopt a gravity reset type material supporting device, but is directly overlapped on a bottom material frame, the bottom material frame is a fixed support welded and fixed above the material frame chassis 31, a gap is formed between the bottom material frame and the material frame chassis 31, and a mechanical arm can stretch into the gap. A material lower limiting piece 12 is also arranged at the corresponding position on the bottom layer material rack. Meanwhile, the outer side end of the supporting member 11 of each gravity reset type material supporting device above is also provided with a material upper limiting member 40 below the material lower limiting member 12. The lower end face of the material upper limiting piece 40 is provided with a positioning structure matched with the shape of the end part of the lower side face of the material, so that the material lower limiting piece 12 on the lower layer and the material upper limiting piece 40 on the upper layer form an upper and lower clamping state for the end part of the side pedal.

Wherein, the material upper limit piece 40 of the gravity reset type material supporting device at the uppermost layer is provided with a laser ranging sensor 34. As shown in fig. 2 and 3, the gravity reset type material supporting device is positioned at the uppermost end of the right side, and the left side is slightly away. The laser irradiation directions of the laser ranging sensors 34 on the two sides are parallel to the left and right directions of the material rack, namely, the laser ranging sensors face the opposite directions. The left lower corner of the feeding side of the material rack and the upper side of the material rack chassis 31 are fixedly provided with a control center, are controlled by a PLC and are in signal connection with the laser ranging sensors 34 and the driving motor of the rail car. The connection mode may be wired or wireless, and in this example, a wireless transmission mode is used.

And the material rack is also provided with a safety structure. Taking the right side wall 33 of the rack as an example, a pair of snap-lock mounting arms 38 fixedly extend out of the two longitudinal rods on the near side and the far side of the right side wall 33 of the rack and oppositely towards the left side, the root parts of the snap-lock mounting arms 38 are respectively connected with a rocker arm 36 in a rotating mode through a rotating pin, and a safety rod 37 is connected between the end parts of the two rocker arms 36. The axial direction of the safety rod 37 is perpendicular to the placing direction of the side pedals on the material rack. 3 material upper limiting pieces 40 are arranged on the corresponding positions of the bumper 37. The rocker arm 36 can rotate in the 9 o ' clock direction and 12 o ' clock direction, when rotating to 9 o ' clock direction, the safety lever 37 crosses over the side pedal of the uppermost layer, and realize the spacing through spacing 40 and side pedal on 3 supplies; when the pedal is rotated to the 12-point direction, the safety lever 37 is synchronously moved to the upper outer side, and the locking of the pedal on the uppermost layer is released. Manual locking and unlocking is achieved between the snap-lock mounting arm 38 and the same side rocker arm 36 by means of a snap-lock pair 39. The left side of the material rack is the same as the left side of the material rack.

In the automatic material rack assembly, the material rack tray 1 always reciprocates beside an automobile assembly line, and the material rack tray 1 is placed on and taken off in a forklift manner. When needing the material loading, fork truck will have placed the work or material rest tray 1 of side footboard, withstands work or material rest limit stop 2 and realizes the location of depth direction. Then, the operator opens the latch pair 39, swings the rocker arm, and unlocks the uppermost step by the safety lever 37. Then the mechanical arm stretches into the material rack, and stops slightly at the side pedal on the uppermost layer of the nearest side, so that the laser ranging sensors 34 on the two sides detect the distance of the mechanical arm at the moment, and transmit signals to the control center 35. The control center 35 calculates the distance between the current position of the mechanical arm and the set position, and immediately sends an instruction to the railcar motion motor to enable the railcar-mounted material rack to move in the left-right direction accurately, so that the set clamping position is opposite to the mechanical arm, the mechanical arm performs clamping action at the moment, and the side pedal on the uppermost layer of the nearest side is taken away upwards. After the side pedals are taken away, the gravity reset type material holders at the two ends are reset by gravity driving, and the side pedals below are exposed for the mechanical arm to continuously clamp. Because the left and right positions of the lower side pedals on the same row are completely consistent, the left and right directions of the lower side pedals do not need to be adjusted when the lower side pedals are clamped. After the last row of 4 side pedals are clamped, the middle row of side pedals needs to be clamped. Due to the fact that the shape of the materials is irregular, concave-convex structures needing to be avoided are arranged on the local parts, the side pedals in the nearest row, the middle row and the farthest row are different in left and right positions, and therefore when a new row of side pedals are grabbed, the mechanical arm can pass through the ranging process of the laser ranging sensor 34 on the uppermost layer and the repositioning process of the rail car. Until all the side pedals on the material rack are completely grabbed. And finally, taking the empty material rack off the material rack tray 1 by the forklift, putting a new material rack on the empty material rack, and continuously supplying materials for the assembly production line.

Claims

1. An automatic material rack assembly comprises a material rack capable of horizontally and directionally moving; the material rack comprises a material rack chassis (31), and a left material rack side wall (32) and a right material rack side wall (33) are respectively arranged at the left end and the right end of the material rack chassis (31), and the material rack is characterized in that gravity reset type material holders are oppositely arranged on the left material rack side wall (32) and the right material rack side wall (33); the gravity reset type material supporting device comprises a supporting piece (11) and a fixing piece (13), wherein the outer side end of the supporting piece (11) is connected with a lower material limiting piece (12), a positioning structure matched with the shape of the end part of the lower side surface of a material is arranged on the lower material limiting piece (12), the inner side end of the fixing piece (13) is fixed, and a rotating pin hole is formed in the outer side end in a penetrating manner; the middle part of the supporting piece (11) is also provided with a rotating pin hole, and the fixing piece (13) is rotatably connected with the supporting piece (11) through a rotating pin (14) of the supporting piece; the inner side end of the support (11) is connected with a balancing weight (15); a laser ranging sensor (34) is arranged on the gravity reset type material supporting device at the uppermost end; the material rack is provided with a control center (35), and the control center (35) is in signal connection with the laser ranging sensor (34) and a mechanism for driving the material rack to horizontally and directionally move.

2. An automated magazine assembly according to claim 1, wherein the support member (11) has a pivot pin hole through its inner end, and the counterweight (15) has a pivot pin hole in its upper portion, whereby the counterweight (15) is pivotally connected to the support member (11) by a counterweight pivot pin (16).

3. An automated magazine assembly according to claim 1 or 2, wherein the support member (11) is fixed with a working attitude limiter (17); when the supporting piece (11) rotates to a working posture around the supporting piece rotating pin (14), the working posture limiting piece (17) and the lower end of the fixing piece (13) realize limiting.

4. An automated magazine assembly according to claim 3, wherein the operation attitude retainer (17) is rod-shaped with an axial direction parallel to the axial direction of the support member rotation pin (14).

5. An automated magazine assembly according to claim 4, characterized in that the lower end of the fixing member (13) is provided with a concave working attitude retainer fitting groove (18), the position and size of the working attitude retainer fitting groove (18) being adapted to the retaining portion of the working attitude retainer (17).

6. An automated magazine assembly according to claim 1 or 2, wherein a reset attitude limiter (19) is fixed to the support member (11); when the supporting piece (11) rotates to a vertical posture around the supporting piece rotating pin (14), the reset posture limiting piece (19) is limited with the upper end of the fixing piece (13).

7. An automated magazine assembly according to claim 1 or 2, wherein the support members (11) are of 2 or more sheets arranged in opposition, the length of the sheets extending in a direction perpendicular to the axial direction of the support member pivot pins (14) and the thickness of the sheets being parallel to the axial direction of the support member pivot pins (14).

8. The automatic material rack assembly as claimed in claim 1 or 2, wherein a safety rod (37) is connected to the upper parts of the left side wall (32) and the right side wall (33) of the material rack through a rocker arm (36), and the axial direction of the safety rod (37) is perpendicular to the material placing direction; the rocker arm (36) drives the safety rod (37) to swing between a horizontal position at a low position and a vertical position at a high position, and the safety rod (37) stretches across above the material when being at the low position.

9. An automated rack assembly as claimed in claim 8, wherein a snap lock mounting arm (38) is further fixedly connected to the rack left side wall (32) and the rack right side wall (33), and the snap lock mounting arm (38) is locked with the rocker arm (36) by a snap lock pair (39).

10. An automated magazine assembly according to claim 8, wherein an upper material limit (40) is mounted below the safety bar (37); the lower end face of the material upper limiting piece (40) is provided with a positioning structure matched with the shape of the end part of the lower side face of the material.