Paperboard feeding and forming device

Abstract

A paperboard feeding and forming device comprises a feeding unit and an automatic folding unit. The feeding unit comprises a feeding rack, a feeding belt conveyor, a guide rail assembly, a push plate and a feeding channel, the feeding belt conveyor, the guide rail assembly, the push plate and the feeding channel are arranged on the feeding rack, the feeding belt conveyor is arranged in the feeding channel, the push plate is connected with the guide rail assembly and synchronously moves along with the feeding belt conveyor in the conveying process of the feeding belt conveyor, and a plurality of paperboard blocking pieces are further arranged on the two sides of the outlet end of the feeding channel. The automatic folding unit comprises a folding rack, a suction cup assembly, a paperboard forming assembly and an overturning assembly, the paperboard forming assembly comprises a forming support, a top plate, a connecting rod mechanism and a folding pressing head. According to the device, automatic feeding and automatic folding forming of paperboards can be achieved, and the paperboard forming efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of packaging equipment, and particularly relates to a cardboard feeding and forming device. Background Art

[0002] In the production of paper packaging boxes, a liner or tray of a specific shape and size is often placed inside the box to secure and cushion the packaged contents. This liner or tray is typically made of cardboard that has undergone a certain amount of pre-processing to achieve a preliminary shape and size, and then is folded. Utility Model Content

[0003] The purpose of the utility model is to provide a cardboard feeding and forming device, which can realize automatic feeding and automatic folding and forming of cardboard, thereby greatly improving the efficiency of cardboard forming.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a cardboard feeding and forming device, including a feeding unit and an automatic folding unit; the feeding unit includes a feeding frame and a feeding belt conveyor, a guide rail assembly, a push plate and a feeding channel arranged on the feeding frame, the feeding belt conveyor is arranged in the feeding channel, and is used to carry and convey a cardboard stack to the outlet end of the feeding channel, the cardboard stack is formed by stacking a plurality of cardboards to be folded along the conveying direction, and the rear of the cardboard stack is supported by the push plate, the push plate is connected to the guide rail assembly, and moves synchronously with the feeding belt conveyor during the conveying process of the feeding belt conveyor, and a plurality of cardboard baffles are further provided on both sides of the outlet end of the feeding channel, the edges of the cardboard baffles extend into the feeding channel, and are used to block the cardboard stack from both sides of the cardboard stack, and an inclined surface is provided on the side of the edge of the cardboard baffle facing the cardboard stack;

[0005] The automatic folding unit includes a folding frame and a suction cup assembly, a cardboard forming assembly and a flipping assembly arranged on the folding frame; one side of the folding frame is fixedly connected to the unloading end of the feeding frame, and the cardboard forming assembly includes a forming bracket, a top plate, a connecting rod mechanism and a folding pressure head, the forming bracket is fixed on the folding frame, the top plate is connected to the jacking mechanism on the forming bracket, one end of the connecting rod mechanism is slidably connected to the top plate, and the other end is rotatably supported on the forming bracket and connected to the folding pressure head, and the top plate drives the folding pressure head to be retracted or extended inwardly through the connecting rod mechanism during the lifting process; the two folding pressure heads form a group to complete the folding of the two ends of the cardboard; the flip part in the flipping assembly is rotatably connected to the forming bracket and flips and switches between a horizontal position and a vertical position under the drive of the flipping drive mechanism, and a suction cup assembly is provided on the flipping part. When the flip part flips to the vertical position, the suction cup assembly sucks a cardboard from the outlet of the feeding channel.

[0006] The feeding belt conveyor is provided with a double-sided toothed synchronous belt, both sides of the double-sided toothed synchronous belt are provided with teeth, and the double-sided toothed synchronous belt is tensioned on two synchronous belt pulleys.

[0007] A one-way bearing is installed on one of the synchronous pulleys, the one-way bearing is connected to a rocker arm, and the rocker arm is connected to a piston rod of a feeding cylinder.

[0008] The unloading end of the feeder frame is provided with a unloading platform, which is connected to the outlet side of the feeder belt conveyor. A roller array is provided on the unloading platform, and the roller array includes a plurality of freely rotating rollers, and the rolling direction of the rollers is consistent with the conveying direction of the feeder belt conveyor; the feeding channel extends to the end of the unloading platform.

[0009] A slide groove is provided on the upper surface of the top plate, and the connecting rod mechanism includes a connecting rod and a swing arm. The lower end of the connecting rod is rotatably connected to the slider, and the slider is slidably arranged along the slide groove. The upper end of the connecting rod is rotatably connected to the first end of the swing arm, and the second end of the swing arm is rotatably connected to the forming bracket, and the folding pressure head is fixed to the second end of the swing arm.

[0010] The connecting rod mechanism is connected with the slider and the folding press head to form a set of folding mechanisms. In the paperboard forming assembly, two sets of folding mechanisms are arranged opposite to each other and are used to fold the two ends of the paperboard.

[0011] The suction cup assembly is located between the two groups of folding mechanisms.

[0012] The lifting mechanism includes a lifting cylinder or an electric push rod.

[0013] The folding frame includes a vertical frame body and a horizontal frame body, the vertical frame body is fixed to the unloading end of the feeding frame, the middle part of the vertical frame body is provided with a feeding port corresponding to the outlet of the feeding channel, a pressing plate assembly is provided above the feeding port, a pressing plate is provided at the bottom of the pressing plate assembly, the pressing plate is bent upward toward one side of the feeding channel to form a raised inclined surface; the cardboard forming assembly, the flipping assembly and the suction cup assembly are installed on the horizontal frame body.

[0014] The guide rail assembly includes a matching horizontal guide rail and a horizontal slider and a matching vertical guide rail and a vertical slider. The horizontal guide rail is arranged on one side of the feed frame and is parallel to the conveying direction of the feed belt conveyor. The horizontal slider slides along the horizontal guide rail. The vertical guide rail is fixed on the horizontal slider perpendicular to the horizontal guide rail. The vertical slider is slidably arranged along the vertical guide rail. One side of the push plate passes over the feeding channel and is fixedly connected to the vertical slider.

[0015] The beneficial effects of the utility model are: 1. The utility model can realize the step-by-step conveying of cardboards in the cardboard stack, the automatic negative pressure absorption one by one, and the automatic folding and forming of the cardboard ends by the folding pressure head, which greatly improves the processing efficiency of cardboard folding.

[0016] 2. The outer teeth of the double-toothed synchronous belt in the utility model can form tooth grooves for placing cardboard, preventing the cardboard from sliding during transportation; by setting a one-way bearing, it can be ensured that the double-sided toothed synchronous belt can only be transported in the conveying direction, and the telescopic range of the feeding cylinder controls the conveying distance each time to be the same.

[0017] 3. The push plate in the present invention can be supported behind the cardboard stack, and the first cardboard at the front of the cardboard stack is pressed against the inner sides of the cardboard baffles on both sides of the feeding channel, thereby clamping the cardboard stack from the front and back directions to prevent the cardboard stack from tipping over during the feeding process.

[0018] 4. The unloading end of the feeder frame in this invention is equipped with an unloading platform with a roller array to receive the cardboard stacks conveyed by the feed belt, reducing friction between the cardboard and the unloading platform. The unloading platform also facilitates the suction cup assembly to absorb the cardboard, preventing the teeth of the double-sided toothed synchronous belt from getting stuck.

[0019] 5. In the present invention, after a pressing plate is provided on the folding frame, the pressing plate is pressed on top of the cardboard stack, which can play the role of arranging the cardboard stack, so that the cardboard is sucked at a preset position, ensuring that the two ends of the cardboard can be accurately folded by the two folding pressure heads; the pressing plate is bent upward toward one side of the feeding channel to form a raised inclined surface to avoid blocking the feeding of the cardboard stack. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an axonometric view of the feeding end of the feeding unit described in the present utility model;

[0021] Figure 2 This is an axonometric view of the unloading end of the feeding unit described in the present invention;

[0022] Figure 3 for Figure 2 Partial view of the middle blanking end;

[0023] Figure 4 This is an axonometric view of the feeding belt conveyor of the feeding unit described in the present utility model;

[0024] Figure 5 This is a schematic structural diagram of the automatic folding unit in the present utility model;

[0025] Figure 6 This is a schematic diagram of the assembly structure of the flip assembly and the suction cup assembly in the present utility model;

[0026] Figure 7 This is an axonometric drawing of the paperboard forming assembly in the present invention;

[0027] Figure 8 It is a side view of the paperboard forming assembly in the present invention;

[0028] Figure 9 Schematic diagram of the cardboard to be folded in the present invention before and after folding;

[0029] Markings in the figure: 1. Feeding frame, 2. Feeding belt conveyor, 201. Double-sided toothed synchronous belt, 202. One-way bearing, 203. Rocker arm, 204. Feeding cylinder, 3. Guide rail assembly, 301. Horizontal guide rail, 302. Horizontal slider, 303. Vertical slider, 304. Vertical guide rail, 4. Push plate, 5. Feeding channel, 6. Unloading platform, 7. Roller array, 8. Cardboard baffle, 9. Folding bracket, 901. Vertical frame, 902. Horizontal frame, 903. Removal port, 10. Press plate assembly, 1001 , pressure plate, 11. Suction cup assembly, 12. Cardboard forming assembly, 1201. Forming bracket, 1202. Top plate, 1203. Connecting rod mechanism, 1203-1. Connecting rod, 1203-2. Swing arm, 1204. Folding pressure head, 1205. Slide, 1206. Slider, 1207. Lifting cylinder, 13. Flipping assembly, 1301. Flipping frame, 1302. Connecting seat, 1303. Flipping cylinder, 1304. Piston joint, 1305. Flipping axis, 14. Double-layer flat plate structure, 15. Hollow rectangular structure. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, but they are not intended to limit the present invention in any way.

[0031] A cardboard feeding and forming device includes a feeding unit and an automatic folding unit. The feeding unit is used to feed the cardboard to be folded and formed to a position where the automatic folding unit can grab it. The automatic folding unit is used to grab the cardboard one by one and fold it into shape. The folded product is then transferred to another conveyor line by a robot on the production line.

[0032] Refer to the attached Figure 1 、 2 As shown, the feeding unit includes a feeding frame 1, a feeding belt 2, a guide rail assembly 3, a push plate 4, a feeding channel 5, a feeding platform 6, a roller array 7 and a cardboard baffle 8.

[0033] The feed frame 1 is provided with a feed channel 5, formed by two vertical plates fixed face-to-face on the feed frame 1 with a spacing therebetween. The width of the feed channel 5 is slightly larger than the width of the cardboard. The feed belt 2 is mounted on the feed frame 1, with its conveying surface located within the feed channel 5. The cardboard sheets are stacked vertically on the feed belt 1 in the conveying direction. The push plate 4 is located within the feed channel 5 and is used to support the vertically positioned cardboard stack. It moves with the feed belt 2, pushing the cardboard stack forward. The push plate 4 slides relative to the feed frame 1 via the guide rail assembly 3. The guide rail assembly 3 includes a cooperating horizontal guide rail 301 and horizontal slider 302, as well as a cooperating vertical guide rail 304 and vertical slider 303. The horizontal guide rail 301 is arranged on one side of the feeder frame 1 and is parallel to the conveying direction of the feeder belt 2. The horizontal slider 302 slides along the horizontal guide rail 301. The vertical guide rail 304 is fixed to the horizontal slider 302 perpendicular to the horizontal guide rail 301. The vertical slider 303 slides along the vertical guide rail 304. One side of the push plate 4 passes over the feeding channel 5 and is fixedly connected to the vertical slider 303. As the push plate 4 moves with the feeder belt 2, the vertical guide rail 304 moves synchronously along the horizontal guide rail 301.

[0034] like Figure 2 、 3 As shown, the unloading end of the feeder frame 1 is provided with a unloading platform 6, which is connected to the outlet side of the feeder belt 2. The unloading platform 6 is provided with a roller array 7. The roller array 7 includes multiple freely rotating rollers, and the rollers rotate in the same direction as the conveying direction of the feeder belt 2. The rollers are used to receive the cardboard stacks conveyed by the feeder belt 2 and reduce friction between the cardboards and the unloading platform 6. The feed channel 5 extends to the end of the unloading platform 6. A plurality of cardboard baffles 8 are also provided on both sides of the outlet end of the feeder channel 5. The cardboard baffles 8 are fixed to the ends of the vertical plates forming the feeder channel 5. The edges of the cardboard baffles 8 extend into the feeder channel 5 to block the cardboard stack from both sides. The edges of the cardboard baffles 8 facing the cardboard stack are provided with an inclined surface so that the outermost cardboard can pass over the cardboard baffles 8 under the action of an external force (the thrust of the cardboard stack).

[0035] like Figure 4As shown, the feeder belt conveyor 2 includes a double-sided toothed synchronous belt 201, a one-way bearing 202, a rocker arm 203, and a feed cylinder 204. The double-sided toothed synchronous belt 201 is supported on two synchronous pulleys. The drive shaft of one of the synchronous pulleys is connected to the inner ring of the one-way bearing 202. The outer ring of the one-way bearing is fixed to one end of the rocker arm, and the other end of the rocker arm is hinged to the piston rod of the feed cylinder. The feed cylinder 204 is fixed to the frame of the feeder belt conveyor 2. This causes the double-sided toothed synchronous belt 201 to move in the conveying direction. The rocker arm 203 is connected to the one-way bearing 202, and the rocker arm 203 is hinged to the piston rod of the feed cylinder 204.

[0036] Each time the piston rod of the feeding cylinder 204 is extended or retracted, it pushes the rocker arm 203, which drives the one-way bearing 202 to rotate a certain angle in the specified direction, thereby conveying the double-sided toothed synchronous belt 201 forward a certain distance. Since the extension and retraction range of the feeding cylinder 204 is the same each time, the double-sided toothed synchronous belt 201 conveys the same distance each time.

[0037] Specifically, when the piston rod of the feeding cylinder 204 is extended, the outer ring of the one-way bearing 202 is driven to rotate by the rocker arm 203. At this time, the bearing function of the one-way bearing 202 is used (the inner and outer rings will not move together), so the double-sided toothed synchronous belt 201 does not move.

[0038] When the piston rod of the feeding cylinder 204 is retracted, the rocker arm 203 drives the outer ring of the one-way bearing 202 to rotate in the other direction. In this direction, the inner and outer rings of the bearing are locked, so the inner ring of the one-way bearing 202 will be driven to rotate together, and then the double-sided toothed synchronous belt 201 will move a certain distance in the conveying direction.

[0039] The double-sided toothed synchronous belt 201 means that both sides of the synchronous belt are provided with teeth. The teeth on the inner side of the synchronous belt engage with the synchronous belt wheel for transmission, and the teeth on the outer side of the synchronous belt are used to form tooth grooves for placing cardboard to prevent the cardboard from sliding during transportation.

[0040] The structure of the automatic folding unit is as follows Figure 5-8 As shown, it includes a folding frame, a pressing plate assembly, a suction cup assembly, a cardboard forming assembly and a flipping assembly.

[0041] The folding frame is an L-shaped frame, comprising a vertical frame 901 and a horizontal frame 902. The vertical frame 901 is fixed to the unloading end of the feed frame 1. A feed opening 903 is located in the middle of the vertical frame 901, corresponding to the outlet of the feed channel 5. A pressure plate assembly 10 is located above the feed opening 903. A pressure plate 1001 is located at the bottom of the pressure plate assembly 10. The pressure plate 1001 is bent upward toward one side of the feed channel 5, forming a tilted surface to avoid obstructing the feeding of the cardboard stack. The cardboard forming assembly and flipping assembly 13 are mounted on the horizontal frame 902. The flipping portion of the flipping assembly 13 is provided with a suction cup assembly 11, and the flipping portion of the flipping assembly 13 is mounted on the cardboard forming assembly 12. After the flipping part of the flipping assembly drives the suction cup assembly to flip 90°, the suction cup assembly 11 sucks the outermost cardboard in the cardboard stack from the feeding port 903, and then the flipping part flips back to the original horizontal position, and then the cardboard forming assembly 12 folds the cardboard into a preset shape.

[0042] The structure of the flip assembly 13 is as follows Figure 6 As shown, it includes a turning frame 1301 and a connecting seat 1302 arranged on one side of the turning frame 1301, an axis hole is provided on the connecting seat 1302, and the suction cup assembly 11 is fixedly arranged on the turning frame 1301. The suction cup assembly 11 is provided with a plurality of suction cups for sucking cardboard.

[0043] The cardboard forming assembly 12 includes a forming bracket 1201, a top plate 1202, a connecting rod mechanism 1203 and a folding pressure head 1204. The forming bracket 1201 is a rectangular structure. A flip shaft 1305 is provided on the side close to the material taking port 903. The connecting seat 1302 of the flip frame 1301 is rotatably connected to the flip shaft 1305. A flip cylinder 1303 is obliquely provided on the lower surface of the forming bracket 1201. The cylinder body of the flip cylinder 1303 is hinged to the cylinder seat on the lower surface of the forming bracket 1201. The end of the piston rod of the flip cylinder 1303 is connected to the piston joint 1304. The piston joint 1304 is hinged to the bottom of the flip frame 1301. The piston rod of the flip cylinder 1303 is extended and retracted to drive the flip frame 1301 to rotate around the flip shaft 1305.

[0044] The center of the lower surface of the top plate 1202 is fixedly connected to the piston rod end of the lifting cylinder 1207. The lifting cylinder 1207 is fixed to the lower surface of the forming bracket 1201. The lifting cylinder 1207 drives the top plate 1202 to rise and fall vertically. The connecting rod mechanism 1203 includes a connecting rod 1203-1 and a swing arm 1203-2. The lower end of the connecting rod 1203-1 is rotatably connected to a slider 1206. The slider 1206 is slidably disposed in a slide groove 1205 on the upper surface of the top plate 1202. The upper end of the connecting rod 1203-1 is rotatably connected to the first end of the swing arm 1203-2. The second end of the swing arm 1203-2 is rotatably connected to the forming bracket 1201. The folding press head 1204 is fixedly connected to the second end of the swing arm 1203-2.

[0045] After the linkage mechanism 1203 is connected to the slider 1206 and the folding head 1204, they form a set of folding structures. The two folding structures are arranged opposite each other to complete the folding of a cardboard. The suction cup assembly is located between the two folding structures. The cardboard sucked by the suction cup assembly is located between the two folding structures, facilitating the two folding heads to squeeze and fold the ends of the cardboard.

[0046] In other implementations of this embodiment, the lifting cylinder 1207 and the flipping cylinder 1303 can be replaced by electric push rods, which can also play the role of driving the top plate 1202 to rise and fall and the flip frame 1301 to rotate.

[0047] The structural changes of the paperboard before and after folding are as follows Figure 9 As shown, Figure 9 (a) represents the cardboard before forming, Figure 9 (b) shows the cardboard after forming. Figure 9 In (a), before forming, the two ends of the paperboard are prefabricated with double-layer flat structures 14, and the double-layer flat structures 14 are prefabricated with creases; after the double-layer flat structures 14 are squeezed by external force, the double-layer flat structures 14 can be formed Figure 9 The hollow rectangular parallelepiped structure 15 in (b) is formed by folding the cardboard into a structure with a low middle and high ends.

[0048] After the top plate 1202 is lifted up, the slider 1206 slides inward along the slide groove 1205, and drives the folding press head 1204 to rotate toward the outside of the forming bracket 1201 through the connecting rod mechanism 1203; after the top plate 1202 moves downward, the folding press head 1204 rotates toward the inside of the forming bracket 1201 through the cooperation of the slider 1206 and the connecting rod mechanism 1203, and at this time, the double-layer flat plate structure 14 at the end of the cardboard can be squeezed and folded.

[0049] In this embodiment, the feeding unit is provided with two feeding belts 2 and two feeding channels. The feeding port 903 in the automatic folding unit can cover the outlets of the two feeding channels 5. Two groups of suction cup assemblies 11 are provided on the turning frame 1301 to complete the simultaneous suction of the cardboards in the two feeding channels 5. The folding press heads 1204 are grouped into two and are used for folding the two ends of the cardboard. Four folding press heads 1204 are provided, two groups in total, corresponding to the two suction cup assemblies 11 respectively. Therefore, when the lifting cylinder 1207 is actuated once, the four folding press heads 1204 can complete the folding and forming of two cardboards.

[0050] In other embodiments, a feeding belt conveyor 2 may also be provided, and the corresponding feeding channel 5, push plate 4, suction cup assembly 44, etc. may also be provided as a single one. In this case, the cardboards in a cardboard stack may be automatically fed and folded.

[0051] The working process of the utility model is described below:

[0052] In step 1, the cardboard sheets to be folded are stacked vertically in the feeding channel 5, with the cardboard sheets in a vertical state. The cardboard sheets are located in the tooth grooves of the double-sided toothed synchronous belt 201, and the rear of the cardboard stack is supported on the push plate 4. The first cardboard sheet at the front of the cardboard stack is pressed against the inner side of the cardboard baffle 8 at the discharge port of the feeding channel 5, and the front of the cardboard stack is pressed against the lower surface of the pressing plate 1001.

[0053] Step 2: Start the flip cylinder 1303, and the flip frame 1301 drives the two suction cup assemblies 11 to suck the two outermost paperboards in the two feeding channels 5 through the material taking port 903. Then the flip frame 1301 is reset, and the paperboard on each suction cup assembly 11 is located between the corresponding two folding press heads 1204.

[0054] Step 3: The lifting cylinder 1207 is activated to pull down the top plate 1202, and the folding press head 1204 is flipped inward, squeezing the double-layer flat plate structure 14 at both ends of the folding paperboard to unfold it to form a hollow rectangular parallelepiped structure 15. Then, the lifting cylinder 1207 is reset, and the folding press head 1204 is flipped outward to the initial position.

[0055] In step 4, while step 3 is being carried out, the feeding cylinder 204 is extended and retracted, and the double-sided toothed synchronous belt 201 drives the cardboard stack to be fed forward to a position, and the push plate 4 moves synchronously to ensure that the cardboard stack does not fall backward. After the movement, the cardboard at the front end of the cardboard stack is against the inner side of the cardboard baffle 8, waiting to be sucked by the suction cup assembly 11;

[0056] Step 5: The cardboard folded in step 3 is grabbed by the robot on the production line and transferred to the next station;

[0057] Repeat steps 2 to 4 until all the cardboards in the cardboard stack in the feeding channel 5 are folded.

[0058] After the cardboards in the cardboard stack in the feeding channel 5 are folded, the push plate 4 is lifted along the vertical guide rail 304, and then the push plate 4 is moved along the horizontal guide rail 301 to the loading end of the feeding unit to place the cardboard stack to be folded into the feeding channel 5.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Those skilled in the art should understand that the specific implementation methods of the present invention can be modified or replaced with equivalents with reference to the above embodiments. Any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention are within the scope of protection of the pending claims.

Claims

1. A cardboard feeding and forming device, characterized in that: The present invention relates to a paperboard storage device and an automatic folding device. The paperboard storage device comprises a feeding unit and an automatic folding unit; the feeding unit comprises a feeding frame and a feeding belt conveyor, a guide rail assembly, a push plate and a feeding channel arranged on the feeding frame; the feeding belt conveyor is arranged in the feeding channel for carrying the cardboard stack and feeding the cardboard stack toward the outlet of the feeding channel; the cardboard stack is formed by stacking a plurality of cardboards to be folded along the conveying direction, and the rear of the cardboard stack is supported by the push plate, the push plate is connected to the guide rail assembly, and moves synchronously with the feeding belt conveyor during the conveying process of the feeding belt conveyor; a plurality of cardboard blocking pieces are further provided on both sides of the outlet end of the feeding channel, the edges of the cardboard blocking pieces extend into the feeding channel for blocking the cardboard stack from both sides of the cardboard stack, and an inclined surface is provided on the side of the edge of the cardboard blocking piece facing the cardboard stack; The automatic folding unit includes a folding frame and a suction cup assembly, a cardboard forming assembly and a flipping assembly arranged on the folding frame; one side of the folding frame is fixedly connected to the unloading end of the feeding frame, and the cardboard forming assembly includes a forming bracket, a top plate, a connecting rod mechanism and a folding pressure head, the forming bracket is fixed on the folding frame, the top plate is connected to the jacking mechanism on the forming bracket, one end of the connecting rod mechanism is slidably connected to the top plate, and the other end is rotatably supported on the forming bracket and connected to the folding pressure head, and the top plate drives the folding pressure head to be retracted or extended inwardly through the connecting rod mechanism during the lifting process; the two folding pressure heads form a group to complete the folding of the two ends of the cardboard; the flip part in the flipping assembly is rotatably connected to the forming bracket and flips and switches between a horizontal position and a vertical position under the drive of the flipping drive mechanism, and a suction cup assembly is provided on the flipping part. When the flip part flips to the vertical position, the suction cup assembly sucks a cardboard from the outlet of the feeding channel.

2. The cardboard feeding and forming device according to claim 1, characterized in that: The feeding belt conveyor is provided with a double-sided toothed synchronous belt, both sides of the double-sided toothed synchronous belt are provided with teeth, and the double-sided toothed synchronous belt is tensioned on two synchronous belt pulleys.

3. The cardboard feeding and forming device according to claim 2, characterized in that: A one-way bearing is installed on one of the synchronous pulleys, the one-way bearing is connected to a rocker arm, and the rocker arm is connected to a piston rod of a feeding cylinder.

4. The cardboard feeding and forming device according to claim 1, characterized in that: The unloading end of the feeder frame is provided with a unloading platform, which is connected to the outlet side of the feeder belt conveyor. A roller array is provided on the unloading platform, and the roller array includes a plurality of freely rotating rollers, and the rolling direction of the rollers is consistent with the conveying direction of the feeder belt conveyor; the feeding channel extends to the end of the unloading platform.

5. The cardboard feeding and forming device according to claim 1, characterized in that: A slide groove is provided on the upper surface of the top plate, and the connecting rod mechanism includes a connecting rod and a swing arm. The lower end of the connecting rod is rotatably connected to the slider, and the slider is slidably arranged along the slide groove. The upper end of the connecting rod is rotatably connected to the first end of the swing arm, and the second end of the swing arm is rotatably connected to the forming bracket, and the folding pressure head is fixed to the second end of the swing arm.

6. The cardboard feeding and forming device according to claim 5, characterized in that: The connecting rod mechanism is connected with the slider and the folding press head to form a set of folding mechanisms. In the paperboard forming assembly, two sets of folding mechanisms are arranged opposite to each other and are used to fold the two ends of the paperboard.

7. The cardboard feeding and forming device according to claim 6, characterized in that: The suction cup assembly is located between the two groups of folding mechanisms.

8. The cardboard feeding and forming device according to claim 1, characterized in that: The lifting mechanism includes a lifting cylinder or an electric push rod.

9. The cardboard feeding and forming device according to claim 1, characterized in that: The folding frame includes a vertical frame body and a horizontal frame body, the vertical frame body is fixed to the unloading end of the feeding frame, the middle part of the vertical frame body is provided with a feeding port corresponding to the outlet of the feeding channel, a pressing plate assembly is provided above the feeding port, a pressing plate is provided at the bottom of the pressing plate assembly, the pressing plate is bent upward toward one side of the feeding channel to form a raised inclined surface; the cardboard forming assembly, the flipping assembly and the suction cup assembly are installed on the horizontal frame body.

10. The cardboard feeding and forming device according to claim 1, characterized in that: The guide rail assembly includes a matching horizontal guide rail and a horizontal slider and a matching vertical guide rail and a vertical slider. The horizontal guide rail is arranged on one side of the feed frame and is parallel to the conveying direction of the feed belt conveyor. The horizontal slider slides along the horizontal guide rail. The vertical guide rail is fixed on the horizontal slider perpendicular to the horizontal guide rail. The vertical slider is slidably arranged along the vertical guide rail. One side of the push plate passes over the feeding channel and is fixedly connected to the vertical slider.

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