A multi-station carton unfolding device

Abstract

This invention relates to the field of cardboard box processing equipment technology, specifically a multi-station cardboard box unfolding device. It mainly includes a processing frame, an unfolding mechanism (located inside the processing frame for compressing and unfolding the cardboard box), and an anti-folding mechanism (located on one side of the unfolding plate) to prevent bending of the cardboard box's sides during unfolding. Simultaneously, the unfolding plate moves, causing the anti-folding plate to move and the T-block to move away from the support rod. Under the action of an elastic element, the T-block slides relative to the T-slot. The T-block moves two hinged rods, which in turn rotate one end of two rotating rods. The other ends of the rotating rods respectively rotate the fixed sleeve and the two anti-folding plates 90 degrees. Under the combined action of the two anti-folding plates and the anti-folding plate, one side of the cardboard box is limited and blocked, resulting in even force distribution on both sides and preventing excessive outward bending. Creases are less likely to appear on the sides of the cardboard box, ensuring structural strength and aesthetics, and improving the overall quality of the cardboard box.

Description

Technical Field

[0001] This invention relates to the field of cardboard box processing equipment technology, specifically a multi-station cardboard box unfolding device. Background Technology

[0002] Multi-station carton unfolding equipment, also known as multi-station carton opener, is an important piece of equipment in automated carton packaging production lines. It can automatically complete the unfolding, forming, and sealing of cartons according to a preset program, eliminating the need for manual operation and greatly improving packaging efficiency.

[0003] However, existing carton unfolding equipment mainly relies on the pressure applied by the extrusion plates on both sides to unfold the folded carton. While this method is effective to some extent, it also has some obvious problems. Because the other two sides of the carton lack sufficient restraint and support, when the carton is unfolded, these sides often bend excessively outward due to uneven force. This excessive bending not only causes unsightly creases on the sides of the carton, but may also affect the overall structural strength and aesthetics of the carton, thereby reducing the quality of the carton.

[0004] Therefore, a multi-station carton unfolding device is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-station carton unfolding device to solve the problem mentioned in the background art that the sides of the carton often bend excessively outward due to uneven force. This excessive bending not only causes unsightly creases on the sides of the carton, but may also affect the overall structural strength and aesthetics of the carton, thereby reducing the quality of the carton.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A multi-station carton unfolding device includes: a processing rack, a placement structure installed on one side of the processing rack, a suction structure installed inside the processing rack, a sealing structure, a handling structure, and a conveying structure;

[0008] An unfolding mechanism is provided inside the processing frame. The unfolding mechanism includes a rotating shaft located above the processing frame, an unfolding plate one fixedly installed on the outer wall of the rotating shaft, and an unfolding plate two provided on one side of the unfolding plate one, for squeezing and unfolding the carton.

[0009] An anti-folding mechanism is provided on one side of the second unfolding plate. The anti-folding mechanism includes an anti-folding plate one fixedly installed on the side of the second unfolding plate. A rotating rod is provided on one side of the anti-folding plate one. The anti-folding plate two is fixedly installed on the outer wall of one end of the rotating rod through a fixing sleeve. This mechanism is used to prevent the sides of the carton from bending during the unfolding process.

[0010] A smoothing mechanism is provided on both sides of the second unfolding plate. The smoothing mechanism includes smoothing plates provided on the upper and lower sides of the second unfolding plate, which are used to smooth the creases of the carton.

[0011] Preferably, a rotary cylinder is fixedly installed on the top surface of the processing frame, and a rotary plate is fixedly installed on the output end of the rotary cylinder. The rotary plate has an irregular shape, and the top surface of the rotary plate is fixedly connected to the bottom surface of the rotating shaft.

[0012] Preferably, a fixing block one and a fixing block two are fixedly installed on the top surface of the processing frame. The fixing block one and the fixing block two are in a vertical position. A stop post one and a stop post two are respectively fixedly installed through the side of the fixing block one and the side of the fixing block two.

[0013] Preferably, a support frame is fixedly installed on the top surface of the processing frame, a linear cylinder is fixedly installed on the side of the support frame, a connecting plate is fixedly installed on the output end of the linear cylinder, and the side of the connecting plate is fixedly connected to the two sides of the unfolding plate.

[0014] Preferably, a T-shaped groove is provided on one side of the anti-bend plate, a T-shaped block is slidably connected to the inner wall of the T-shaped groove, an elastic element is fixedly installed on one side of the T-shaped block, the other end of the elastic element is fixedly connected to the inner wall of one end of the T-shaped groove, and a support hole is provided on one side of the T-shaped block.

[0015] Preferably, a support plate is fixedly installed on the side of the support frame, an mounting plate is fixedly installed on the side of the support plate, and a support rod is fixedly installed on the side of the mounting plate. The outer wall of one end of the support rod is slidably connected to the inner wall of the support hole.

[0016] Preferably, one side of the T-shaped block is hinged with two hinge rods, there are two rotating rods, the other ends of the two hinge rods are respectively hinged to one end of the two rotating rods, the outer walls of the two rotating rods are hinged to one side of the anti-bend plate, and there are two anti-bend plates.

[0017] Preferably, a fixing rod is fixedly installed on the outer wall of one end of each of the two rotating rods, and a rotating block is fixedly installed on one end of each of the two fixing rods. Two arc-shaped grooves are opened on one side of the anti-bend plate. The inner walls of the two arc-shaped grooves are slidably connected to the outer walls of the two rotating blocks. Arc rods are fixedly installed on the inner walls of the two arc-shaped grooves, and the inner walls of the two rotating blocks are slidably connected to the outer walls of the two arc rods.

[0018] Preferably, the outer walls of the two rotating rods are respectively provided with adjustment grooves, the inner walls of the two adjustment grooves are respectively hinged with adjustment rods, and the other ends of the two adjustment rods are respectively hinged with T-shaped blocks II. Two T-shaped grooves II are provided on one side of the anti-bend plate, and the outer walls of the two T-shaped blocks II are respectively slidably connected to the inner walls of the two T-shaped grooves II.

[0019] Preferably, L-shaped rods are fixedly installed on the two T-shaped blocks away from their sides, and the other ends of the two L-shaped rods are fixedly connected to the sides of the two flat plates respectively.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This invention moves the unfolding plate 2, which in turn moves the anti-folding plate 1. The anti-folding plate 1 moves the T-shaped block 1 away from the support rod. Under the action of the elastic element, the T-shaped block 1 slides relative to the T-shaped groove 1. The T-shaped block 1 moves the two hinge rods, which in turn rotate one end of the two rotating rods. The other end of the two rotating rods respectively rotates the fixing sleeve and the two anti-folding plates 2 by 90 degrees. Under the combined action of the two anti-folding plates 2 and the anti-folding plate 1, one side of the carton is limited and blocked. The carton is evenly stressed on both sides and is not prone to excessive bending outward. Unsightly creases are not likely to appear on the sides of the carton, ensuring the overall structural strength and aesthetics of the carton, thereby improving the quality of the carton.

[0022] The rotation of the two rotating rods simultaneously drives the two adjusting rods to move. The two adjusting rods then drive the two T-shaped blocks to move, which in turn drive the two L-shaped rods to move away from each other. The two L-shaped rods then drive the two smoothing plates to move away from each other. As the two smoothing plates move, they simultaneously press and smooth the creases of the carton and further unfold the carton, ensuring that the sides of the carton unfold more smoothly and improving the quality of the unfolding.

[0023] The rotating cylinder drives the rotating plate and the rotating shaft to rotate, and the rotating shaft drives the unfolding plate one to rotate. At the same time, the linear cylinder drives the connecting plate and the unfolding plate two to move. Under the combined action of unfolding plate one and unfolding plate two, the carton is squeezed and unfolded, eliminating the need for manual unfolding of the carton and reducing the workload of workers. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the rear side of the three-dimensional structure of the present invention;

[0026] Figure 3 This is a partial three-dimensional structural diagram of the present invention;

[0027] Figure 4 This is a partial three-dimensional structural rear view of the present invention;

[0028] Figure 5 This is a schematic diagram of the two-dimensional structure of the unfolded plate of the present invention;

[0029] Figure 6 This is a three-dimensional structural diagram of the anti-bend plate of the present invention;

[0030] Figure 7 For the present invention Figure 4 Enlarged view of point A in the middle;

[0031] Figure 8 This is an exploded view of a three-dimensional structure of the T-shaped block of the present invention;

[0032] Figure 9 For the present invention Figure 5 Enlarged view at point B in the middle;

[0033] Figure 10 For the present invention Figure 8 Enlarged view of point C in the middle.

[0034] In the picture:

[0035] 1. Processing rack; 101. Placement structure; 102. Picking structure; 103. Enclosed structure; 104. Handling structure; 105. Conveying structure;

[0036] 2. Deployment mechanism; 201. Rotating cylinder; 202. Rotating plate; 203. Rotating shaft; 204. Deployment plate one; 205. Fixing block one; 206. Stop post one; 207. Fixing block two; 208. Stop post two; 209. Support frame; 210. Linear cylinder; 211. Deployment plate two; 212. Connecting plate;

[0037] 3. Anti-bending mechanism; 301. Anti-bending plate one; 302. T-block one; 303. T-slot one; 304. Elastic element; 305. Support hole; 306. Support plate; 307. Mounting plate; 308. Support rod; 309. Hinge rod; 310. Rotating rod; 311. Fixed rod; 312. Rotating block; 313. Arc groove; 314. Arc rod; 315. Anti-bending plate two; 316. Fixed sleeve;

[0038] 4. Smoothing mechanism; 401. Adjusting rod; 402. Adjusting groove; 403. T-block two; 404. T-groove two; 405. L-shaped rod; 406. Smoothing plate. Detailed Implementation

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0041] like Figure 1-10 As shown, this application provides a multi-station carton unfolding device, including: a processing rack 1, a placement structure 101 installed on one side of the processing rack 1, a suction structure 102 installed inside the processing rack 1, a sealing structure 103, a handling structure 104, and a conveying structure 105.

[0042] The unfolding mechanism 2 is located inside the processing frame 1. The unfolding mechanism 2 includes a rotating shaft 203 located above the processing frame 1, an unfolding plate 204 fixedly installed on the outer wall of the rotating shaft 203, and an unfolding plate 211 located on one side of the unfolding plate 204, which is used to squeeze and unfold the carton.

[0043] Specifically, such as Figure 1-8 As shown, a rotary cylinder 201 is fixedly installed on the top surface of the processing frame 1, and a rotary plate 202 is fixedly installed on the output end of the rotary cylinder 201. The rotary plate 202 is irregularly shaped, and the top surface of the rotary plate 202 is fixedly connected to the bottom surface of the rotating shaft 203.

[0044] In this embodiment: the rotating cylinder 201 drives the rotating plate 202 to rotate, and the rotating plate 202 drives the rotating shaft 203 and the unfolding plate 204 to rotate. The unfolding plate 204 and the unfolding plate 211 together squeeze the two sides of the carton, ensuring that the carton is quickly unfolded and the efficiency is high.

[0045] Specifically, such as Figure 1-8 As shown, a fixing block 1 205 and a fixing block 207 are fixedly installed on the top surface of the processing frame 1. The fixing block 1 205 and the fixing block 207 are in a vertical position. Stopping post 1 206 and the stopping post 208 are fixedly installed through the sides of fixing block 1 205 and the sides of fixing block 207, respectively.

[0046] In this embodiment: when the rotating plate 202 rotates, the rotating plate 202 comes into contact with the first stop post 206 and the second stop post 208. Since the first stop post 206 and the second stop post 208 are perpendicular, the rotating plate 202 is guaranteed to rotate 90 degrees under the joint limitation of the first stop post 206 and the second stop post 208, and the rotating plate 202 drives the upper unfolding plate 204 to rotate too much and cause the carton to bend, thereby improving the quality of the unfolding of the carton.

[0047] Specifically, such as Figure 1-8 As shown, a support frame 209 is fixedly installed on the top surface of the processing frame 1, a linear cylinder 210 is fixedly installed on the side of the support frame 209, a connecting plate 212 is fixedly installed on the output end of the linear cylinder 210, and the side of the connecting plate 212 is fixedly connected to the side of the unfolding plate 211.

[0048] In this embodiment: the linear cylinder 210 drives the connecting plate 212 to move, and the connecting plate 212 drives the unfolding plate 211 to move. The unfolding plate 211 and the unfolding plate 204 together squeeze and unfold the carton.

[0049] Anti-folding mechanism 3 is set on one side of unfolding plate 211. Anti-folding mechanism 3 includes anti-folding plate 301 fixedly installed on the side of unfolding plate 211. A rotating rod 310 is provided on one side of anti-folding plate 301. Anti-folding plate 315 is fixedly installed on the outer wall of one end of the rotating rod 310 through a fixing sleeve 316, which is used to prevent the side of the carton from bending during unfolding.

[0050] Specifically, such as Figure 1-10 As shown, the anti-bend plate 301 has a T-shaped groove 303 on its side, and a T-shaped block 302 is slidably connected to the inner wall of the T-shaped groove 303. An elastic element 304 is fixedly installed on the side of the T-shaped block 302, and the other end of the elastic element 304 is fixedly connected to the inner wall of one end of the T-shaped groove 303. A support hole 305 is provided on the side of the T-shaped block 302.

[0051] In this embodiment: the anti-folding plate 301 can limit and block the other side of the carton to prevent over-folding. The T-slot 303 limits the T-block 302 and ensures that the elastic element 304 can push the T-block 302 to move smoothly in a straight line without deviation, thus improving the subsequent transmission quality.

[0052] Specifically, such as Figure 1-10 As shown, a support plate 306 is fixedly installed on the side of the support frame 209, an mounting plate 307 is fixedly installed on the side of the support plate 306, and a support rod 308 is fixedly installed on the side of the mounting plate 307. The outer wall of one end of the support rod 308 is slidably connected to the inner wall of the support hole 305.

[0053] In this embodiment: by setting the support rod 308, when the anti-bend plate 301 drives the T-block 302 to move, the support rod 308 can cooperate with the support hole 305 on the T-block 302 to provide stable support for the T-block 302, ensuring that when the T-block 302 moves toward the support rod 308, the T-block 302 moves relative to the T-slot 303.

[0054] Specifically, such as Figure 1-10 As shown, the T-shaped block 302 has two hinge rods 309 hinged to its side, and two rotating rods 310. The other ends of the two hinge rods 309 are respectively hinged to one end of the two rotating rods 310. The outer walls of the two rotating rods 310 are hinged to the side of the anti-bend plate 301. There are two anti-bend plates 315.

[0055] In this embodiment: the T-block 302 drives the two hinge rods 309 to move, and the two hinge rods 309 respectively drive one end of the two rotating rods 310 to rotate. When the other end of the two rotating rods 310 rotates, it drives the two anti-folding plates 315 to rotate at a certain angle. The two anti-folding plates 315 cooperate with the anti-folding plate 301 to limit the side of the carton, ensuring that the carton is not easily over-folded and creases occur, thus improving the quality of the carton. Moreover, when the rotating rod 310 drives the anti-folding plate 315 to rotate to its original position, it can prevent the anti-folding plate 315 from blocking the carton feeding, ensuring the smooth progress of carton processing and improving efficiency.

[0056] Specifically, such as Figure 1-10 As shown, a fixed rod 311 is fixedly installed on the outer wall of one end of each of the two rotating rods 310, and a rotating block 312 is fixedly installed on one end of each of the two fixed rods 311. Two arc-shaped grooves 313 are opened on the side of the anti-bend plate 301. The inner walls of the two arc-shaped grooves 313 are slidably connected to the outer walls of the two rotating blocks 312, and arc-shaped rods 314 are fixedly installed on the inner walls of the two arc-shaped grooves 313. The inner walls of the two rotating blocks 312 are slidably connected to the outer walls of the two arc-shaped rods 314.

[0057] In this embodiment: when the rotating rod 310 rotates, it drives the fixed rod 311 and the rotating block 312 to rotate. The rotating block 312 rotates on the inner wall of the arc groove 313. By setting the arc rod 314, the rotating block 312 can be further limited, ensuring that the rotating block 312 rotates more smoothly, thereby ensuring that the rotating rod 310 rotates more smoothly and improving stability.

[0058] The smoothing mechanism 4 is disposed on both sides of the unfolding plate 211. The smoothing mechanism 4 includes smoothing plates 406 disposed on the upper and lower sides of the unfolding plate 211, which are used to smooth the creases of the carton.

[0059] Specifically, such as Figure 1-10 As shown, the outer walls of the two rotating rods 310 are respectively provided with adjustment grooves 402, the inner walls of the two adjustment grooves 402 are respectively hinged with adjustment rods 401, and the other ends of the two adjustment rods 401 are respectively hinged with T-shaped blocks 403. The side of the anti-bend plate 301 is provided with two T-shaped grooves 404, and the outer walls of the two T-shaped blocks 403 are respectively slidably connected to the inner walls of the two T-shaped grooves 404.

[0060] In this embodiment: the rotating rod 310 rotates, causing the adjusting rod 401 to move, and the adjusting rod 401 causes the T-shaped block 403 to move. The T-shaped groove 404 limits the T-shaped block 403 to ensure that the T-shaped block 403 can move smoothly in a straight line.

[0061] Specifically, such as Figure 1-10As shown, two T-shaped blocks 403 are respectively fixedly installed with L-shaped rods 405 away from the side, and the other ends of the two L-shaped rods 405 are respectively fixedly connected to the side of the two flat plates 406.

[0062] In this embodiment: when the T-shaped block 403 moves, it drives the L-shaped rod 405 to move, and the L-shaped rod 405 drives the smoothing plate 406 to move, thereby applying pressure to smooth the creases of the carton and further squeezing and unfolding the carton to ensure that the carton unfolds more smoothly.

[0063] The specific solution is as follows: The cardboard box is placed on the placement structure 101, and the suction structure 102 sucks the cardboard box to the unfolding position. The rotating cylinder 201 drives the rotating plate 202 and the rotating shaft 203 to rotate. The rotating shaft 203 drives the unfolding plate one 204 to rotate. At the same time, the linear cylinder 210 drives the connecting plate 212 and the unfolding plate two 211 to move. Under the combined action of the unfolding plate one 204 and the unfolding plate two 211, the cardboard box is squeezed and unfolded, eliminating the need for manual unfolding of the cardboard box and reducing the workload of workers. As the unfolding plate two 211 moves, it also drives the anti-folding plate one 301 to move. The anti-folding plate one 301... The movable T-block 302 moves away from the support rod 308. Under the action of the elastic element 304, it pushes the T-block 302 to slide relative to the support rod 308. The T-block 302 drives the two hinge rods 309 to move. The two hinge rods 309 drive one end of the two rotating rods 310 to rotate. The other end of the two rotating rods 310 respectively drives the fixed sleeve 316 and the two anti-bend plates 315 to rotate 90 degrees. Under the combined action of the two anti-bend plates 315 and the anti-bend plate 301, one side of the carton is limited and blocked, and the force on both sides of the carton is even, making it less likely to bend excessively outward. The folding mechanism prevents unsightly creases from forming on the sides of the cardboard box, ensuring its overall structural strength and aesthetics, thus improving its quality. Simultaneously, the rotation of the two rotating rods 310 moves the two adjusting rods 401, which in turn moves the two T-shaped blocks 403. These T-shaped blocks 403 then move the two L-shaped rods 405 away from each other, which in turn move the two smoothing plates 406 away from each other. The movement of the smoothing plates 406 simultaneously presses and smooths the creases in the cardboard box, further unfolding it and ensuring the sides of the box are properly unfolded. The opening is smoother, improving the quality of the unfolding. Then, unfolding plate 1 204 and unfolding plate 211 are returned to their original positions. The support hole 305 on T-block 1 302 contacts the support rod 308, causing T-block 1 302 to move in T-groove 1 303 and squeeze the elastic element 304. T-block 1 302 drives the rotating rod 310 and anti-folding plate 2 315 to rotate to a vertical state through the structure, so as not to block the next carton from entering. The bottom of the carton is sealed by the sealing structure 103, and the carton is transported to the conveying structure 105 by the handling structure 104 and transported to the required position.

[0064] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary; within the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

[0065] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A multi-station carton unfolding device, comprising: The processing rack (1), a placement structure (101) installed on one side of the processing rack (1), a suction structure (102), a closing structure (103), a handling structure (104), and a conveying structure (105) installed inside the processing rack (1), characterized in that, An unfolding mechanism (2) is provided inside the processing frame (1). The unfolding mechanism (2) includes a rotating shaft (203) located above the processing frame (1), an unfolding plate one (204) fixedly installed on the outer wall of the rotating shaft (203), and an unfolding plate two (211) provided on one side of the unfolding plate one (204). A support frame (209) is fixedly installed on the top surface of the processing frame (1). A linear cylinder (210) is fixedly installed on the side of the support frame (209). A connecting plate (212) is fixedly installed at the output end of the linear cylinder (210). The side of the connecting plate (212) is fixedly connected to the side of the unfolding plate two (211) for squeezing and unfolding the carton. An anti-folding mechanism (3) is provided on one side of the second unfolding plate (211). The anti-folding mechanism (3) includes an anti-folding plate (301) fixedly installed on the side of the second unfolding plate (211). A rotating rod (310) is provided on one side of the anti-folding plate (301). An anti-folding plate (315) is fixedly installed on the outer wall of one end of the rotating rod (310) through a fixing sleeve (316). A T-shaped groove (303) is provided on the side of the anti-folding plate (301). A T-shaped block (302) is slidably connected to the inner wall of the T-shaped groove (303). The side of the T-shaped block (302) is fixedly connected to the inner wall of the T-shaped groove (303). An elastic element (304) is fixedly installed, and the other end of the elastic element (304) is fixedly connected to the inner wall of one end of the T-shaped groove (303). A support hole (305) is opened on the side of the T-shaped block (302). A support plate (306) is fixedly installed on the side of the support frame (209). An installation plate (307) is fixedly installed on the side of the support plate (306). A support rod (308) is fixedly installed on the side of the installation plate (307). The outer wall of one end of the support rod (308) is slidably connected to the inner wall of the support hole (305) to prevent the side of the carton from bending during the unfolding process. A smoothing mechanism (4) is provided on both sides of the second unfolding plate (211). The smoothing mechanism (4) includes a smoothing plate (406) provided on the upper and lower sides of the second unfolding plate (211). The outer walls of the two rotating rods (310) are respectively provided with adjustment grooves (402). The inner walls of the two adjustment grooves (402) are respectively hinged with adjustment rods (401). The other ends of the two adjustment rods (401) are respectively hinged with T-shaped blocks (403). The side of the first anti-folding plate (301) is provided with two T-shaped grooves (404). The outer wall of the T-shaped block (403) is slidably connected to the inner wall of the T-shaped groove (404). L-shaped rods (405) are respectively fixedly installed on the two opposite sides of the two T-shaped blocks (403). The other end of the L-shaped rods (405) is fixedly connected to the side of the smoothing plate (406) for smoothing the creases of the carton.

2. The multi-station carton unfolding equipment according to claim 1, characterized in that, A rotating cylinder (201) is fixedly installed on the top surface of the processing frame (1). A rotating plate (202) is fixedly installed at the output end of the rotating cylinder (201). The rotating plate (202) is irregularly shaped, and the top surface of the rotating plate (202) is fixedly connected to the bottom surface of the rotating shaft (203).

3. The multi-station carton unfolding equipment according to claim 2, characterized in that, The top surface of the processing frame (1) is fixedly installed with a fixing block 1 (205) and a fixing block 2 (207). The fixing block 1 (205) and the fixing block 2 (207) are in a vertical position. The side of the fixing block 1 (205) and the side of the fixing block 2 (207) are respectively fixedly installed with a stop post 1 (206) and a stop post 2 (208).

4. The multi-station carton unfolding device according to claim 1, characterized in that, The T-shaped block (302) has two hinge rods (309) hinged to its side, and there are two rotating rods (310). The other end of the hinge rod (309) is hinged to one end of the rotating rod (310). The outer wall of the rotating rod (310) is hinged to the side of the anti-bend plate (301). There are two anti-bend plates (315).

5. A multi-station carton unfolding device according to claim 4, characterized in that, A fixing rod (311) is fixedly installed on the outer wall of one end of the rotating rod (310), and a rotating block (312) is fixedly installed on one end of the fixing rod (311). Two arc-shaped grooves (313) are opened on the side of the anti-bend plate (301). The inner wall of the arc-shaped groove (313) is slidably connected to the outer wall of the rotating block (312). An arc-shaped rod (314) is fixedly installed on the inner wall of the arc-shaped groove (313), and the inner wall of the rotating block (312) is slidably connected to the outer wall of the arc-shaped rod (314).

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