Material conveying device for box folding machine

Abstract

The utility model discloses a material conveying device for a box folding machine, which comprises a material storage mechanism, a material conveying mechanism and a material conveying mechanism, the material control mechanism is used for positioning a second-layer paper board blank through an S-shaped elastic piece which slides up and down and is arranged on the side wall of the limiting rod in an overturning manner; the transferring mechanism and the bearing mechanism are matched with each other to be used for transferring and placing the paperboard blanks into the box folding and shaping mechanism one by one. The box folding and shaping mechanism comprises a plate folding assembly with an adjustable distance and a pressing piece which is arranged in a vertical moving manner; when the distance between the plate folding assemblies is increased, the output mechanism is used for receiving the paper boxes folded and formed in the box folding and shaping mechanism and conveying the paper boxes outwards. All stations of the box folding machine are effectively connected, the smoothness of box folding action is ensured, then the machining efficiency is promoted and improved, the labor cost and the labor intensity are reduced, and the box folding procedure is automatic.

Description

Technical Field

[0001] The utility model relates to box folding equipment, in particular to a material transmission device for a box folding machine. Background Art

[0002] At present, in the manufacturing process, most simple packaging boxes are folded manually, resulting in high labor costs and low work efficiency. In addition, folding packaging boxes is mechanical and repetitive work, which has high labor intensity for workers and uneven quality of packaging boxes. In the prior art, automatic box folding machines are used to replace manual box folding, effectively solving the problems of high labor costs and high labor intensity. Automatic box folding machines mainly realize the folding operation of cardboard through folding mechanisms and shaping mechanisms.

[0003] The speed of each step in the entire folding process determines the overall efficiency of the folding process. If one step is too slow, the remaining steps need to wait until the step is completed before they can continue. Material transmission is used to connect the various steps, and many folding machines also require semi-manual processing. For example, cardboard blanks are generally made by uniformly cutting and cutting large pieces of stacked cardboard according to specifications. During the production process, factors such as burrs will cause adhesion between cardboard blanks, especially for oily cardboard with strong electrostatic adsorption. After stacking, oily cardboard is easy to stick. It is difficult to ensure that the cardboard is transported one by one using a suction cup transfer mechanism, and it needs to be separated manually, which leads to stagnation in processing efficiency and cannot be improved now. Furthermore, the cardboard boxes need to be manually transferred out or require equipment with a more complex structure to move down and absorb them before transferring them out.

[0004] Therefore, on the basis of ensuring that the folding box action is completed smoothly, the research purpose of the utility model is to design a material transmission device for a folding box machine that can connect various folding box mechanisms to promote a significant improvement in processing efficiency. Utility Model Content

[0005] In view of the technical problems existing in the above-mentioned prior art, the utility model provides a material transmission device for a box folding machine, which can effectively solve the technical problems existing in the above-mentioned prior art.

[0006] The technical solution of the utility model is:

[0007] A material transmission device for a box folding machine, comprising:

[0008] The material storage mechanism comprises a support frame which can be moved left and right, and a storage area for stacking cardboard blanks is surrounded by a plurality of vertically fixed limiting rods on the support frame, and at least one limiting rod is arranged on the same side of the storage area;

[0009] A material control mechanism is used to position the second layer of paperboard blanks. The limiting rod slides up and down facing a side wall of the storage area and is turned over to be provided with a corresponding S-shaped elastic member. The upper end portion of the S-shaped elastic member is pressed against the top of the uppermost paperboard blank. The lower folded portion of the S-shaped elastic member abuts against or is spaced from the side wall of the second layer of paperboard blanks. The length of the upper bending portion of the S-shaped elastic member is greater than that of the lower bending portion, and the upper bending end extends forward and is placed on the front side of the S-shaped elastic member.

[0010] A transfer mechanism, installed at the front side of the upper end of the storage mechanism, used to transfer the cardboard blanks in the storage mechanism to the receiving mechanism one by one;

[0011] A receiving mechanism, installed at the rear side of the material storage mechanism and above the folding and box forming mechanism, for receiving the cardboard blanks transferred from the feeding mechanism and placing them in the folding and box forming mechanism;

[0012] The folding box shaping mechanism comprises a folding plate assembly with adjustable spacing and a pressing member that moves up and down, wherein the pressing member moves downward to push the paperboard blank and cooperates with the folding plate assembly to fold the paperboard blank tightly and press it into shape, wherein the folding plate assembly comprises a group of first folding plate pieces that can move up and down, and at least one group of second folding plate pieces that are arranged on both sides of the first folding plate pieces and can move left and right;

[0013] The output mechanism is used to receive the paper box folded and formed in the folding box forming mechanism and convey it outward, comprising two synchronously running conveying chains installed on the outside of the first folding plate and staggered with the second folding plate up and down, the ends of the conveying chains extend outward to the outside of the folding box forming mechanism; after the first folding plate moves downward, the upper surface of the conveying chain is higher than the first folding plate, and after the second folding plate moves outward in opposite directions, the second folding plate is respectively placed on the outside of the two conveying chains.

[0014] The material storage mechanism also includes a driving cylinder for driving the support frame to move left and right, and a group of limit guide rails arranged side by side in front and back with intervals. The driving cylinder is arranged side by side between two of the limit guide rails. A number of sliders compatible with the limit guide rails are fixedly connected at equal intervals on the left and right sides of the lower part of the support frame corresponding to the position of the limit guide rails. The support frame is movably installed on the limit guide rails through a sliding connection of the sliders.

[0015] The side wall of the limit rod facing the storage area is recessed inward and has an embedding groove extending upward to the top thereof. The material control mechanism includes a special-shaped part that can be slidably installed in the embedding groove up and down. The special-shaped part includes a cross bar in the middle and V-shaped rods that are integrally and symmetrically fixed to the two end portions of the cross bar. The S-shaped elastic part is rotatably installed in the middle of the cross bar.

[0016] The two ends of the V-shaped rod are fixedly connected with vertically arranged guide rollers, and the mounting groove is located at the position for installing the guide roller and is arranged as an arc-shaped surface adapted to the guide roller; the middle part of the S-shaped elastic member is fixedly connected with a sleeve for connecting the cross bar, and the cross bar is detachably fixed with limiting rings for limiting the sleeve on both side edges of the sleeve.

[0017] A plurality of storage areas are arranged side by side on the support frame through a plurality of limit rods, and two of the limit rods are installed side by side at intervals on the same side of the storage area; two limit rods are arranged side by side at intervals between two adjacent storage areas, and the limit rod arranged between the two storage areas faces corresponding embedding grooves on both side edges of the storage area, and S-shaped elastic parts are installed in the embedding grooves through corresponding special-shaped parts.

[0018] The transfer mechanism includes a plurality of first suction cups which are arranged to move up and down and forward and backward synchronously, the suction nozzles of the first suction cups are located on the same horizontal plane and are externally connected to a first vacuum pump through corresponding air pipes; the first suction cups are respectively connected to a first motor for driving the first suction cups to move up and down and a second motor for driving the first suction cups to move forward and backward through a screw drive.

[0019] The first suction cup on the same side of the transfer mechanism is fixedly connected to the corresponding sliding rod, and a buffer cone rod is fixedly connected to the end portion of the sliding rod facing the receiving mechanism. The transfer mechanism is provided with a limit block at the moving end of the first suction cup, and the side wall of the limit block is provided with a conical hole adapted to the buffer cone rod, and a buffer rubber layer on one side is evenly provided on the surface of the conical hole. When the first suction cup moves into place, the buffer cone rod is interference fit and inserted into the conical hole.

[0020] The receiving mechanism includes a group of second suction cups that are arranged to move up and down synchronously, the suction nozzles of the second suction cups are located on the same horizontal plane and are externally connected to a third vacuum pump through corresponding air pipes; the second suction cups are connected to the telescopic cylinder through corresponding connecting rods and connecting plates, and the piston rod of the telescopic cylinder is fixed to the middle part of the connecting plate; the pressing part is provided with an embedding hole for penetrating the second suction cup, and the second suction cup is placed in the embedding hole and moves up and down.

[0021] Advantages of the utility model:

[0022] 1) The utility model effectively connects various workstations of the box folding machine, ensures the smoothness of the box folding action, thereby promoting the improvement of processing efficiency, reducing labor costs and labor intensity, and automating the box folding process.

[0023] 2) The utility model limits and fixes the stacked cardboard blanks while rotating and installing S-shaped elastic parts on the sides of the limiting rods around them through special-shaped parts that slide up and down. The upper end of the S-shaped elastic part is pressed against the top of the top cardboard blank, and the lower bend of the S-shaped elastic part abuts or is spaced against the side wall of the second cardboard blank. When the suction cup of the transfer mechanism sucks the top cardboard blank upward, the S-shaped elastic parts all rotate outward to make way, and the lower bend of the S-shaped elastic part rotates toward the side wall of the second cardboard blank due to the outward movement of the upper bend, and abuts and presses against the side wall of the second cardboard blank. Multiple positioning points on the four sides cooperate to fully fix the second cardboard blank at the same time, thereby effectively preventing the second cardboard blank from moving up with the transfer of the upper cardboard blank due to sticking problems, ensuring that the materials are loaded and transferred one by one, and speeding up the operation.

[0024] However, such a setting can only ensure the transfer of the first layer of materials, and cannot achieve the loading of each layer of materials one by one. Therefore, the present invention sets the S-shaped elastic member to have elastic properties, the length of its upper side bending portion is greater than the length of the lower side bending portion, and the upper side bending end extends forward and is placed on the front side of the S-shaped elastic member to ensure that the center of gravity of the S-shaped elastic member is still biased towards one side of the cardboard blank during rotation, so that after the upper cardboard blank is removed, the S-shaped elastic member moves downward with the special-shaped member, and the S-shaped elastic member is reset and rotated to the upper side bending portion to be re-pressed against the second layer of cardboard blank, and such repeated actions effectively ensure that each layer of cardboard blank is loaded one by one; and the setting of the embedding groove can effectively control the outward rotation angle of the S-shaped elastic member to prevent it from over-turning, further promoting its reset.

[0025] 3) The utility model has a conveying chain disposed on the outside of the first folding plate of the folding box forming mechanism with adjustable spacing and staggered with the second folding plate up and down. The folding box forming mechanism is used to move and make way after the folding box is formed, so that the paper box can be smoothly and conveniently transferred directly to the conveying chain of the output mechanism for transportation, thereby improving the efficiency of transportation.

[0026] 4) Use the limit block to buffer the inertia of movement to effectively ensure the accuracy of transfer, avoid the offset of the cardboard blank, and further promote accurate box folding. The utility model cooperates with the buffer cone rod of the conical structure and the limit block provided with the tapered hole of the buffer rubber layer. When the buffer cone rod is completely interference-fitted and inserted into the tapered hole, the movement of the suction cup stops and is buffered, and the cardboard blank is prevented from inertial offset. When the suction cup is withdrawn, the buffer cone rod moves slightly to set the gap with the tapered hole, thereby effectively avoiding the excessive increase in the friction force of the suction cup moving backward due to the setting of the buffer rubber layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the utility model.

[0028] Figure 2 It is a structural schematic diagram of the storage mechanism.

[0029] Figure 3 It is a longitudinal section view of the storage mechanism.

[0030] Figure 4 for Figure 3 Enlarged schematic diagram of part A.

[0031] Figure 5 for Figure 4 Schematic diagram of usage status.

[0032] Figure 6 Schematic diagram of the installation of special-shaped parts and S-shaped elastic parts.

[0033] Figure 7 It is a schematic diagram of the status of the box folding shaping mechanism and the output mechanism when folding the box.

[0034] In the accompanying drawings: material storage mechanism 1, support frame 101, limit rod 102, limit guide rail 103, material control mechanism 2, special-shaped part 201, cross bar 2011, V-shaped rod 2012, guide roller 2013, limit collar 2014, S-shaped elastic part 202, transfer mechanism 3, first suction cup 301, first motor 302, second motor 303, buffer cone rod 304, limit block 305, receiving mechanism 4, second suction cup 401, telescopic cylinder 402, folding box shaping mechanism 5, pressing part 501, first folding plate 502, second folding plate 503, output mechanism 6, conveying chain 601. DETAILED DESCRIPTION

[0035] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the accompanying drawings:

[0036] Example 1

[0037] refer to Figure 1-7 , a material transmission device for a box folding machine, comprising:

[0038] The storage mechanism 1 comprises a support frame 101 which can be moved left and right, and a storage area for stacking cardboard blanks is surrounded by a plurality of vertically fixed limiting rods 102 on the support frame 101, and at least one limiting rod 102 is arranged on the same side of the storage area;

[0039] The material control mechanism 2 is used to position the second layer of paperboard blanks. The limiting rod 102 slides up and down and is turned over to be provided with a corresponding S-shaped elastic member 202 facing the side wall of the storage area. The upper end of the S-shaped elastic member 202 is pressed against the top of the uppermost paperboard blank. The lower folded part of the S-shaped elastic member 202 abuts against or is spaced from the side wall of the second layer of paperboard blanks. The length of the upper bending part of the S-shaped elastic member 202 is greater than that of the lower bending part, and the upper bending end extends forward and is placed on the front side of the S-shaped elastic member 202.

[0040] The transfer mechanism 3 is installed at the front side of the upper end of the storage mechanism 1 and is used to transfer the cardboard blanks in the storage mechanism 1 to the receiving mechanism 4 one by one;

[0041] The receiving mechanism 4 is installed at the rear side of the material storage mechanism 1 and above the folding and shaping mechanism 5, and is used to receive the cardboard blanks transferred from the feeding mechanism and place them in the folding and shaping mechanism 5;

[0042] The folding box shaping mechanism 5 comprises a folding plate assembly with adjustable spacing and a pressing member 501 which is arranged to move up and down. The pressing member 501 moves downward to push the cardboard blank and cooperates with the folding plate assembly to fold the cardboard blank tightly and press it into shape. The folding plate assembly comprises a group of first folding plate pieces 502 which can move up and down, and at least one group of second folding plate pieces 503 which are arranged on both sides of the first folding plate piece 502 and can move left and right.

[0043] The output mechanism 6 is used to receive the paper box folded and formed in the folding box forming mechanism 5 and convey it outward, and includes two synchronously running and installed on the outside of the first folding plate 502, and the second folding plate 503 is staggered up and down, and the ends of the conveying chains 601 extend outward to the outside of the folding box forming mechanism 5; after the first folding plate 502 moves downward, the upper surface of the conveying chain 601 is higher than the first folding plate 502, and after the second folding plate 503 moves outward in opposite directions, the second folding plate 503 is respectively placed on the outside of the two conveying chains 601.

[0044] The utility model effectively connects various workstations of the box folding machine, ensures the smoothness of the box folding action, thereby promoting the improvement of processing efficiency, reducing labor costs and labor intensity, and automating the box folding process.

[0045] The utility model provides a conveying chain 601 on the outside of the first folding plate 502 of the folding box shaping mechanism 5 with adjustable spacing and staggered with the second folding plate 503. The folding box shaping mechanism 5 is used to move and make way after the folding box is shaped, so that the paper box can be directly transferred to the conveying chain 601 of the output mechanism for transportation smoothly and conveniently, thereby improving the efficiency of transportation.

[0046] The material storage mechanism 1 also includes a driving cylinder 104 for driving the support frame 101 to move left and right, and a group of limit guide rails 103 arranged side by side in front and back. The driving cylinder 104 is arranged side by side between two of the limit guide rails 103. A plurality of sliders compatible with the limit guide rails 103 are fixedly connected at equal intervals on the left and right sides of the lower part of the support frame 101 corresponding to the position of the limit guide rails 103. The support frame 101 is movably installed on the limit guide rails 103 through the sliding connection of the sliders.

[0047] The side wall of the limiting rod 102 facing the storage area is recessed inward and has an embedding groove extending upward to the top thereof. The material control mechanism 2 includes a special-shaped part 201 that can be slidably installed in the embedding groove up and down. The special-shaped part 201 includes a middle cross bar 2011 and V-shaped rods 2012 that are integrally and symmetrically fixed to the two end parts of the cross bar 2011. The S-shaped elastic part 202 is rotatably installed in the middle of the cross bar 2011.

[0048] The two ends of the V-shaped rod 2012 are fixedly connected with vertically arranged guide rollers 2013, and the mounting groove is located at the position for installing the guide roller 2013 and is arranged as an arc-shaped surface adapted to the guide roller 2013; the middle part of the S-shaped elastic member 202 is fixedly connected with a sleeve for connecting the cross bar 2011, and the cross bar 2011 is detachably fixed with limiting rings 2014 for limiting the sleeve on both sides of the sleeve.

[0049] A plurality of storage areas are arranged side by side on the support frame 101 through a plurality of limit rods 102, and two limit rods 102 are installed side by side at intervals on the same side of the storage area; two limit rods 102 are arranged side by side at intervals between two adjacent storage areas, and the limit rod 102 arranged between the two storage areas is provided with corresponding embedding grooves on both sides facing the storage areas, and S-shaped elastic parts 202 are installed in the embedding grooves through corresponding special-shaped parts 201.

[0050] The utility model limits and fixes the stacked cardboard blanks, and at the same time, the side edges of the limiting rods 102 are rotatably installed with the special-shaped pieces 201 that are slid up and down, and the upper end of the S-shaped elastic piece 202 is pressed against the top of the top cardboard blank, and the lower side bend of the S-shaped elastic piece 202 abuts or is spaced against the side wall of the second cardboard blank. When the suction cup of the transfer mechanism 3 sucks the top cardboard blank upward, the S-shaped elastic piece 202 rotates outward to make way, and the lower side bend thereof rotates toward the side wall of the second cardboard blank due to the outward movement of the upper side bend and abuts and presses against the side wall of the second cardboard blank. The multiple positioning points on the four sides cooperate to fully fix the second cardboard blank at the same time, thereby effectively preventing the second cardboard blank from moving up with the transfer of the upper cardboard blank due to the problem of sticking, ensuring that the materials are loaded and transferred one by one, and speeding up the operation.

[0051] However, such a setting can only ensure the transfer of the first layer of materials, and cannot achieve the loading of each layer of materials one by one. Therefore, the present invention sets the S-shaped elastic member 202 to have elastic properties, the length of its upper side bending portion is greater than the length of the lower side bending portion, and the upper side bending end extends forward and is placed on the front side of the S-shaped elastic member 202 to ensure that the center of gravity of the S-shaped elastic member 202 is still biased to one side of the cardboard blank during rotation, so that after the upper cardboard blank is removed, the S-shaped elastic member 202 moves downward with the special-shaped member 201, and the S-shaped elastic member 202 is reset and rotated to the upper side bending portion to be re-pressed against the second layer of cardboard blank, and such repeated actions effectively ensure that each layer of cardboard blank is loaded one by one; and the setting of the embedding groove can effectively control the outward rotation angle of the S-shaped elastic member 202 to prevent it from over-turning, further promoting its reset.

[0052] The transfer mechanism 3 includes a plurality of first suction cups 301 which are synchronously arranged to move up and down and forward and backward, the suction nozzles of the first suction cups 301 are located on the same horizontal plane and are externally connected to a first vacuum pump through corresponding air pipes; the first suction cups 301 are respectively connected to a first motor 302 for driving the first suction cups 301 to move up and down, and a second motor 303 for driving the first suction cups 301 to move forward and backward through a screw drive.

[0053] The receiving mechanism 4 includes a group of second suction cups 401 that are synchronously moved up and down, the suction nozzles of the second suction cups 401 are located on the same horizontal plane and are externally connected to a third vacuum pump through corresponding air pipes; the second suction cups 401 are connected to the telescopic cylinder 402 through corresponding connecting rods and connecting plates, and the piston rod of the telescopic cylinder 402 is fixed to the middle part of the connecting plate; the pressing piece 501 is provided with an embedding hole for penetrating the second suction cup 401, and the second suction cup 401 is placed in the embedding hole and moves up and down.

[0054] Example 2

[0055] refer to Figure 1-2 The difference from Example 1 is that: the first suction cup 301 on the same side of the transfer mechanism 3 is fixedly connected to the corresponding sliding rod, and a buffer cone rod 304 is fixedly connected to the end of the sliding rod facing the receiving mechanism 4, and the transfer mechanism 3 is provided with a limit block 305 at the moving end of the first suction cup 301, and the side wall of the limit block 305 is provided with a conical hole adapted to the buffer cone rod 304, and a buffer rubber layer on one side is evenly provided on the surface of the conical hole. When the first suction cup 301 moves into place, the buffer cone rod 304 is inserted into the conical hole with an interference fit.

[0056] The limit block 305 is used to buffer the inertia of movement to effectively ensure the accuracy of transfer, avoid the offset of the cardboard blank, and further promote accurate box folding. The utility model cooperates the buffer cone rod 304 with a conical structure and the buffer rubber layer provided with a tapered hole. When the buffer cone rod 304 is completely interference-fitted and inserted into the tapered hole, the movement of the suction cup stops instantly, and the cardboard blank is prevented from inertial offset. When the suction cup is withdrawn, the buffer cone rod 304 moves slightly to set the gap with the tapered hole, thereby effectively avoiding the excessive increase in the friction force of the suction cup moving backward due to the setting of the buffer rubber layer.

[0057] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A material transmission device for a box folding machine, characterized in that: include: The material storage mechanism (1) comprises a support frame (101) which can be moved leftward and rightward, the support frame (101) being provided with a storage area for stacking cardboard blanks surrounded by a plurality of vertically fixed limiting rods (102), and at least one limiting rod (102) is arranged on the same side of the storage area; A material control mechanism (2) is used to position the second layer of paperboard blanks, the limiting rod (102) is slid up and down facing a side wall of the storage area and is turned over to be provided with a corresponding S-shaped elastic member (202), the upper end portion of the S-shaped elastic member (202) is pressed against the top of the uppermost paperboard blank, the lower folded portion of the S-shaped elastic member (202) is in contact with or spaced from the side wall of the second layer of paperboard blanks, the length of the upper bending portion of the S-shaped elastic member (202) is greater than the length of the lower bending portion, and the upper bending end extends forward and is placed on the front side of the S-shaped elastic member (202); A transfer mechanism (3) is installed on the front side of the upper end of the storage mechanism (1) and is used to transfer the cardboard blanks in the storage mechanism (1) to the receiving mechanism (4) one by one; A receiving mechanism (4) is installed at the rear side of the material storage mechanism (1) and above the folding and shaping mechanism (5), and is used to receive the cardboard blanks transferred from the feeding mechanism and place them in the folding and shaping mechanism (5); A folding box shaping mechanism (5) comprises a folding plate assembly with adjustable spacing and a pressing member (501) arranged to move up and down, wherein the pressing member (501) moves downward to push the paperboard blank and cooperates with the folding plate assembly to fold the paperboard blank tightly and press it to shape, wherein the folding plate assembly comprises a group of first folding plate pieces (502) that can move up and down, and at least one group of second folding plate pieces (503) that are arranged on both sides of the first folding plate piece (502) and can move left and right; The output mechanism (6) is used to receive the paper box folded and formed in the folding and shaping mechanism (5) and convey it outwards, and comprises two conveying chains (601) which run synchronously and are installed on the outside of the first folding plate (502) and are arranged in an upper and lower offset manner with the second folding plate (503). The ends of the conveying chains (601) extend outwards to the outside of the folding and shaping mechanism (5); after the first folding plate (502) moves downwards, the upper surface of the conveying chain (601) is higher than the first folding plate (502); after the second folding plate (503) moves outwards in opposite directions, the second folding plate (503) is respectively placed on the outside of the two conveying chains (601).

2. A material transmission device for a box folding machine according to claim 1, characterized in that: The material storage mechanism (1) further comprises a driving cylinder (104) for driving the support frame (101) to move left and right, and a group of limit guide rails (103) arranged side by side and spaced apart from each other. The driving cylinder (104) is arranged side by side between two limit guide rails (103). A plurality of sliders adapted to the limit guide rails (103) are fixedly connected at equal intervals to the left and right of the lower part of the support frame (101) corresponding to the position of the limit guide rails (103). The support frame (101) is movably mounted on the limit guide rails (103) through the sliding connection of the sliders.

3. A material transmission device for a box folding machine according to claim 1, characterized in that: The side wall of the limiting rod (102) facing the storage area is inwardly recessed and provided with an embedding groove extending upward to the top thereof; the material control mechanism (2) comprises a special-shaped part (201) slidably installed in the embedding groove; the special-shaped part (201) comprises a cross bar (2011) in the middle, and V-shaped rods (2012) integrally and symmetrically fixed to the two end portions of the cross bar (2011); the S-shaped elastic part (202) is rotatably installed in the middle of the cross bar (2011).

4. A material transmission device for a box folding machine according to claim 3, characterized in that: The two ends of the V-shaped rod (2012) are fixedly connected with vertically arranged guide rollers (2013), and the mounting groove is located at the position for installing the guide roller (2013) and is arranged as an arc-shaped surface adapted to the guide roller (2013); the middle part of the S-shaped elastic member (202) is fixedly connected with a sleeve for connecting the cross bar (2011), and the cross bar (2011) is detachably fixedly connected with limiting rings (2014) for limiting the sleeve on both sides of the sleeve.

5. A material transmission device for a box folding machine according to claim 3, characterized in that: A plurality of storage areas are arranged side by side on the support frame (101) via a plurality of limiting rods (102); two limiting rods (102) are installed side by side at intervals on the same side of the storage area; two limiting rods (102) are installed side by side at intervals between two adjacent storage areas; and the limiting rod (102) arranged between the two storage areas is provided with corresponding mounting grooves on both sides facing the storage area, and S-shaped elastic parts (202) are installed in the mounting grooves via corresponding special-shaped parts (201).

6. A material transmission device for a box folding machine according to claim 1, characterized in that: The transfer mechanism (3) comprises a plurality of first suction cups (301) which are arranged to move up and down and forward and backward synchronously, wherein the suction nozzles of the first suction cups (301) are located on the same horizontal plane and are externally connected to a first vacuum pump through corresponding air pipes; the first suction cups (301) are respectively connected to a first motor (302) for driving the first suction cups (301) to move up and down, and a second motor (303) for driving the first suction cups (301) to move forward and backward through a screw drive.

7. A material transmission device for a box folding machine according to claim 6, characterized in that: The first suction cup (301) on the same side of the transfer mechanism (3) is fixedly connected to the corresponding sliding rod, and a buffer cone rod (304) is fixedly connected to the end of the sliding rod facing the receiving mechanism (4). The transfer mechanism (3) is provided with a limit block (305) at the moving end of the first suction cup (301), and the side wall of the limit block (305) is provided with a conical hole matched with the buffer cone rod (304). A buffer rubber layer is evenly provided on one side of the surface of the conical hole. When the first suction cup (301) moves into place, the buffer cone rod (304) is inserted into the conical hole with an interference fit.

8. The material transmission device for a box folding machine according to claim 1, characterized in that: The receiving mechanism (4) comprises a group of second suction cups (401) which are arranged to move up and down synchronously, the suction nozzles of the second suction cups (401) are located on the same horizontal plane and are externally connected to a third vacuum pump through corresponding air pipes; the second suction cups (401) are connected to the telescopic cylinder (402) through corresponding connecting rods and connecting plates, and the piston rod of the telescopic cylinder (402) is fixed to the middle part of the connecting plate; the pressing piece (501) is provided with an embedding hole for penetrating the second suction cup (401), and the second suction cup (401) is placed in the embedding hole and moves up and down.

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