Corrugated board automatic forming and pressing device

Abstract

The invention belongs to the technical field of corrugated board forming, and discloses a corrugated board automatic forming and pressing device which comprises a shell, foot bases are installed at the bottom end of the shell, a limiting mechanism is installed in the shell, and through cooperation of structures such as a limiting block, a first limiting rod and a first limiting disc, the automatic forming and pressing device can achieve automatic forming and pressing of corrugated boards. By arranging the limiting block, the device can press the limiting block adapting to the height of the current corrugated board towards the slot, so that the limiting block is connected with the shell, the glue applying amount fluctuates due to uneven pressing pressure, the pressing gap is adjusted through the limiting block, the width of a glue line can be maintained within a process window, and the production efficiency is improved. And when the pressing process is replaced, the limiting heightening block is rapidly disassembled, assembled and replaced, so that the adaptability of the device during process replacement is conveniently improved, and the purposes that the pressing effect of the device is conveniently improved by installing the heightening block and the height of the heightening block is rapidly replaced to adapt to different pressing processes are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of corrugated cardboard forming, in particular to an automatic forming and pressing device for corrugated cardboard. Background Art

[0002] Corrugated cardboard is a multi-layer adhesive body, which is composed of at least a layer of wavy core paper interlayer and a layer of cardboard. Because packaging containers made of corrugated cardboard have unique properties and advantages in beautifying and protecting the goods inside, they have achieved great success in the competition with various packaging materials and have become one of the main materials for making packaging containers that has been used for a long time and is showing rapid development.

[0003] Patent No. CN221417599U discloses a corrugated cardboard pressing device, including a support frame, wherein transport shafts are installed at equal intervals between the inner walls of the support frame, a limit shaft is installed on the inner wall of the support frame above the transport shaft, support blocks are installed at equal intervals on the top of the support plate, and two groups of transmission rods are provided at the bottom of the support frame. The middle part of the transmission rod is rotatably connected to the rotating shaft, and a hydraulic cylinder is installed on the top of the pressing box. The bottom of the hydraulic cylinder passes through the pressing box and is connected to the hydraulic rod. The bottom of the hydraulic rod is fixedly connected to the pressing plate, and the right side of the pressing plate is fixedly connected to the connecting rod. The other end of the connecting rod is connected to the transmission shaft B. When the corrugated cardboard pressing device drives the pressing plate downward to press it by the hydraulic cylinder, the support block lifts the corrugated cardboard away from the surface of the transport shaft for pressing, so that the pressing plate will not squeeze the transport shaft during pressing, thereby preventing equipment damage caused by pressing, extending the life of the equipment, and achieving better pressing effect.

[0004] However, when using this device, it is impossible to adapt to different processes to freely select the padding blocks to adapt to the pressing height. It is also impossible to quickly adapt the corrugated cardboard to disassemble and assemble the padding blocks when changing the pressing process. In addition, when gluing the corrugated cardboard, the dust accumulated on the surface of the corrugated cardboard will affect the uniformity of the gluing. The corrugated cardboard needs to be cleaned and the bubbles generated in the glue layer after gluing need to be removed to improve the fit after pressing. Summary of the Invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides an automatic forming and pressing device for corrugated cardboard.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic corrugated cardboard forming and pressing device, comprising a housing, a footrest mounted on the bottom end of the housing, a first servo motor fixed to the outside of the housing, a blowing mechanism provided at the rotating end of the first servo motor, a gluing cylinder movably connected to one end of the housing, a delivery pump mounted on the outside of the gluing cylinder, one end of the delivery pump connected to a delivery pipe, and a limiting mechanism mounted inside the housing;

[0007] The air blowing mechanism includes a connecting rod, a cam and an air collecting seat, wherein the connecting rod is fixed to the rotating end of the first servo motor, the cam is fixed to the outside of the connecting rod, the air collecting seat is fixed to the inside of the housing, and the piston is movably connected to the inside of the air collecting seat;

[0008] The limiting mechanism includes a limiting pad, a first limiting rod and a first limiting plate. The limiting pad is movably connected to the inside of the shell, the first limiting rod is fixed to the outside of the limiting pad, the first limiting plate is fixed to the outside of the first limiting rod, and the second limiting plate is movably connected to the outside of the first limiting rod.

[0009] Preferably, a trigger block is fixed to the outside of the piston, an extension block is fixed to the outside of the trigger block, a first return spring is fixed to the outside of the extension block, a positioning block is fixed to the outside of the first return spring, one end of the gas collecting seat is connected to the first gas pipe, and the output end of the first gas pipe is connected to the second gas pipe.

[0010] Preferably, the gas collecting seat is provided with two groups symmetrically distributed about the central axis of the cam, the piston and the gas collecting seat are in abutting connection, the contact surface between the trigger block and the cam is arc-shaped, and the extension block and the gas collecting seat are in sliding connection.

[0011] Preferably, the extension block is provided with two groups symmetrically distributed about the central axis of the air collecting seat, the first return spring is provided with two groups symmetrically distributed about the central axis of the extension block, and the positioning block is fixed on the outside of the air collecting seat.

[0012] Preferably, the first return spring is used to squeeze the extension block and keep it moving inward, and the positioning blocks are provided in two groups and are symmetrically distributed about the central axis of the gas collecting seat.

[0013] Preferably, a slot is provided inside the shell, a second limiting rod is movably connected inside the shell, a second return spring is sleeved outside the second limiting rod, and a limiting block is fixed outside the second limiting rod.

[0014] The second limiting plate (804) fixedly connected to the limiting pad (801) is fixed on the top side of the limiting groove close to the shell (1); the depth of the slot (805) is equal to 2 to 3 times the total length of the second limiting plate (804), the first limiting rod (802) and the first limiting plate (803), and the end 5 / 11 of the length of the slot (805) is a star-shaped structure, the inner diameter of the star-shaped structure is slightly smaller than the diameter of the first limiting plate (803); the outer diameter of the star-shaped structure is the same as the outer diameter of the other section of the slot (805).

[0015] Preferably, the limiting pad block is provided with several groups of different heights, the limiting pad block is slidably connected to the shell, the diameter of the first limiting plate is smaller than the diameter of the second limiting plate, and the second limiting plate is slidably and fixedly connected to the first limiting rod.

[0016] Preferably, the diameter of the slot is larger than the diameter of the second limiting plate, the second limiting rod and the shell are slidably connected, two groups of the second limiting rods are provided, the second limiting rods are symmetrically distributed about the central axis of the slot, the second return spring is used to squeeze the second limiting rod and the limiting block and keep them moving inward, and the outer wall of the limiting block is a slope.

[0017] Preferably, a conveying mechanism is installed at one end of the shell, a processing groove is opened inside the shell, a hydraulic cylinder is fixed at the top of the shell, the hydraulic cylinder is provided with two groups symmetrically distributed about the central axis of the shell, a pressing plate is fixed at the bottom end of the hydraulic cylinder, four groups of positioning rods are fixed inside the shell, and a control panel is fixed on the outside of the shell.

[0018] Preferably, the conveying mechanism includes a second servo motor, a first transmission roller and a second transmission roller. The second servo motor is fixed to the outside of the shell, the first transmission roller is fixed to the outside of the second servo motor, the second transmission roller is rotatably connected to the inside of the shell, and the first transmission roller and the second transmission roller are covered with a conveyor belt.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention cooperates with structures such as a limit pad, a first limit rod, and a first limit plate to enable the device to press the limit pad that adapts to the current corrugated cardboard height toward the slot, so that the limit pad is connected to the shell, and then the device starts the hydraulic cylinder to push the pressing plate downward to perform lateral and top limit when pressing the core paper inside the processing groove, so that the bonding surface of the middle sandwich paper and the two layers of core paper obtains balanced pressure, avoids local stress concentration leading to loss of edge pressure strength, and uneven pressing pressure leads to fluctuation in glue application amount. By adjusting the pressing gap by the limit pad, the glue line width can be maintained within the process window, and the glue line breakage or excessive width caused by the decrease in bonding strength can be prevented. Furthermore, when changing the pressing process, in order to adapt to the forming of corrugated cardboards of different heights, the limit pad can be quickly disassembled and replaced, which facilitates the device to improve the adaptability during process change, thereby achieving the purpose of facilitating the device to improve the pressing effect by installing the pad and quickly changing the pad height to adapt to different pressing processes.

[0021] The present invention cooperates with structures such as connecting rods, cams, and air collecting seats, so that when the first servo motor is started to drive the glue coating cylinder to rotate to coat the raw paper with glue, the glue coating cylinder synchronously drives the connecting rod and cam to rotate, thereby driving the piston to move back and forth, thereby collecting gas, and transporting the gas to the glue coating front end and glue coating rear end of the raw paper through the first gas pipe and the second gas pipe. Blowing air to the glue coating front end of the raw paper can effectively remove dust and impurities on the surface of the raw paper, thereby ensuring the uniformity of the glue coating of the raw paper by the glue coating cylinder. Blowing air to the glue coating rear end of the raw paper can blow out and eliminate bubbles in the glue layer generated by the glue coating, thereby improving the subsequent lamination fit, thereby achieving the purpose of facilitating the cleaning of the raw paper and improving the lamination fit. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall rear view structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0025] Figure 4 Schematic diagram of the limiting mechanism structure of the present invention;

[0026] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure of the local section at point A in the middle;

[0027] Figure 6 Schematic diagram of the limiting and raising blocks of different heights according to the present invention;

[0028] Figure 7 It is a structural schematic diagram of the blowing mechanism of the present invention.

[0029] In the figure: 1. Housing; 2. Foot; 3. First servo motor; 4. Glue coating cylinder; 5. Delivery pump; 6. Delivery pipe; 7. Air blowing mechanism; 701. Connecting rod; 702. Cam; 703. Air collecting seat; 704. Piston; 705. Trigger block; 706. Extension block; 707. First return spring; 708. Positioning block; 709. First air pipe; 710. Second air pipe; 8. Limiting mechanism; 801. Limiting pad; 802, first limiting rod; 803, first limiting plate; 804, second limiting plate; 805, slot; 806, second limiting rod; 807, second return spring; 808, limiting block; 9, conveying mechanism; 901, second servo motor; 902, first transmission roller; 903, second transmission roller; 904, conveyor belt; 10, processing groove; 11, hydraulic cylinder; 12, pressing plate; 13, positioning rod; 14, control panel. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] like Figures 1 to 7 As shown, the present invention provides an automatic forming and pressing device for corrugated cardboard, comprising a shell 1, a foot base 2 is installed at the bottom end of the shell 1, a first servo motor 3 is fixed to the outside of the shell 1, a blowing mechanism 7 is provided at the rotating end of the first servo motor 3, a glue coating cylinder 4 is movably connected to one end of the shell 1, a delivery pump 5 is installed on the outside of the glue coating cylinder 4, one end of the delivery pump 5 is connected to a delivery pipe 6, a limiting mechanism 8 is installed inside the shell 1, a delivery mechanism 9 is installed at one end of the shell 1, a processing groove 10 is opened inside the shell 1, a hydraulic cylinder 11 is fixed at the top end of the shell 1, the hydraulic cylinder 11 is provided with two groups symmetrically distributed about the central axis of the shell 1, a pressing plate 12 is fixed to the bottom end of the hydraulic cylinder 11, four groups of positioning rods 13 are fixed inside the shell 1, and a control panel 14 is fixed to the outside of the shell 1.

[0032] The above scheme is adopted: the raw material paper is transported by the conveyor belt 904 so that it passes through the glue coating cylinder 4, and the first servo motor 3 is started to drive the glue coating cylinder 4 to rotate, so that the surface of the glue coating cylinder 4 allows the brush head to glue the raw material paper. The surface of the glue coating cylinder 4 is provided with a through hole. When the delivery pump 5 is started, the glue can be delivered to the inside of the glue coating cylinder 4 through the delivery pipe 6, and applied to the surface of the raw material paper through the through hole opened on the surface of the glue coating cylinder 4, and falls into the inside of the processing tank 10 after the gluing is completed. The hydraulic cylinder 11 is started to push the pressing plate 12 downward to press the raw material paper inside the processing tank 10.

[0033] like Figures 1 to 3 As shown, the conveying mechanism 9 includes a second servo motor 901, a first transmission roller 902 and a second transmission roller 903. The second servo motor 901 is fixed to the outside of the shell 1, the first transmission roller 902 is fixed to the outside of the second servo motor 901, the second transmission roller 903 is rotatably connected to the inside of the shell 1, and the outside of the first transmission roller 902 and the second transmission roller 903 is provided with a conveyor belt 904.

[0034] The above solution is adopted: by starting the second servo motor 901 to drive the first transmission roller 902 to rotate and then drive the conveyor belt 904 to move, so that the raw paper is conveyed.

[0035] like Figures 1 to 3 and Figure 7As shown, the blowing mechanism 7 includes a connecting rod 701, a cam 702 and an air collecting seat 703. The connecting rod 701 is fixed to the rotating end of the first servo motor 3. The cam 702 is fixed to the outside of the connecting rod 701, and the air collecting seat 703 is fixed to the inside of the shell 1. The internal movability of the air collecting seat 703 is connected to the piston 704, the outside of the piston 704 is fixed to the trigger block 705, and the outside of the trigger block 705 is fixed to the extension block 706. The air collecting seat 703 is provided with two groups of symmetrically distributed about the central axis of the cam 702. The piston 704 and the air collecting seat 703 are in abutting connection. The contact surface of the trigger block 705 and the cam 702 is arc-shaped. The extension block 706 and the air collecting seat 703 are slidably connected. The extension block 706 is provided with two groups of symmetrically distributed about the central axis of the air collecting seat 703. The first return spring 707 is provided with two groups of symmetrically distributed about the central axis of the extension block 706. The positioning block 708 is fixed to the outside of the air collecting seat 703.

[0036] like Figures 1 to 3 and Figure 7 As shown, a first return spring 707 is fixed to the outside of the extension block 706, a positioning block 708 is fixed to the outside of the first return spring 707, one end of the gas collecting seat 703 is connected to the first gas pipe 709, and the output end of the first gas pipe 709 is connected to the second gas pipe 710. The first return spring 707 is used to squeeze the extension block 706 and keep it moving inward. The positioning blocks 708 are provided with two groups that are symmetrically distributed about the central axis of the gas collecting seat 703.

[0037] The above scheme is adopted: the connecting rod 701 and the cam 702 are synchronously driven to rotate by the glue coating cylinder 4, and then the two sets of trigger blocks 705 are squeezed by the shape contact of the cam 702, so that the trigger blocks 705, the piston 704 and the extension block 706 are contracted. After the cam 702 is out of contact with the trigger block 705, the first return spring 707 resets the trigger block 705, the piston 704 and the extension block 706, so that the piston 704 moves back and forth, and then gas is collected and transported to the glue coating front end and the glue coating back end of the raw material paper through the first gas pipe 709 and the second gas pipe 710.

[0038] like Figures 1 to 6 As shown, the limiting mechanism 8 includes a limiting pad block 801, a first limiting rod 802 and a first limiting plate 803. The limiting pad block 801 is movably connected to the inside of the shell 1. The outside of the limiting pad block 801 is fixed with the first limiting rod 802. The outside of the first limiting rod 802 is fixed with the first limiting plate 803. The outside of the first limiting rod 802 is movably connected with the second limiting plate 804. The limiting pad block 801 is provided with several groups of different heights. The limiting pad block 801 is slidably connected to the shell 1. The diameter of the first limiting plate 803 is smaller than the diameter of the second limiting plate 804. The second limiting plate 804 is slidably connected to the first limiting rod 802.

[0039] like Figures 1 to 6 As shown, a slot 805 is provided inside the shell 1, and a second limiting rod 806 is movably connected inside the shell 1. A second return spring 807 is provided on the outside of the second limiting rod 806, and a limiting block 808 is fixed on the outside of the second limiting rod 806. The diameter of the slot 805 is larger than the diameter of the second limiting disk 804. The second limiting rod 806 is slidingly connected to the shell 1. Two groups of second limiting rods 806 are provided, and the second limiting rods 806 are symmetrically distributed about the central axis of the slot 805. The second return spring 807 is used to squeeze the second limiting rod 806 and the limiting block 808 and keep them moving inward. The outer wall of the limiting block 808 is a slope.

[0040] The above solution is adopted: by pressing the limit pad 801, the first limit plate 803 squeezes the limit block 808, and the limit block 808 contracts inward. After the first limit plate 803 passes, the second return spring 807 resets the limit block 808, so that the limit block 808 is located at the bottom end of the first limit plate 803, limiting the first limit plate 803, and then limiting the limit pad 801. When it is necessary to replace the limit pad 801 of a different height, press the limit pad 801 to allow the second limit plate 803 to be reset. The positioning plate 804 squeezes the limit block 808, and the limit block 808 contracts inward. After the second limit plate 804 passes, the second reset spring 807 resets the limit block 808, so that the limit block 808 is located at the bottom end of the second limit plate 804 and lifts the second limit plate 804, so that the second limit plate 804 and the first limit plate 803 are in contact. At this time, pulling the limit pad 801 can disconnect the limit pad 801 from the slot 805, and then quickly replace the limit pad 801.

[0041] The second limiting plate (804) fixedly connected to the limiting pad (801) is fixed on the top side of the limiting groove of the shell (1). This design scheme is mainly to prevent the first limiting rod (802) from being broken when the limiting pad (801) is subjected to external torsional torque. The principle is that the bottom side of the limiting pad (801) close to the limiting groove of the shell (1) serves as a support point, and the second limiting plate (804) serves as a fulcrum. The longer the distance between these two points, the greater the pulling force that the first limiting rod (802) can withstand, and the first limiting rod (802) is less likely to break. The depth of the slot (805) is equal to 2 to 3 times the total length of the second limiting plate (804), the first limiting rod (802) and the first limiting plate (803). The main purpose is that if the limiting pad (801) needs to be replaced, the first limiting rod (802) can be forcibly broken, and then the broken first limiting rod (802) and the first limiting plate (803) are pushed into the end 5 / 11 of the length of the slot (805), and then the new limiting pad (801) is installed. The inner diameter of the star-shaped structure is slightly smaller than the diameter of the first limiting plate (803) to avoid the first limiting rod (802) and the first limiting plate (803) remaining after being broken from jumping in the slot (805) and generating noise and other adverse effects.

[0042] The working principle and use process of the present invention are as follows: the second servo motor 901 is started to drive the first transmission roller 902 to rotate and then drive the conveyor belt 904 to move, so that the raw material paper is conveyed and passes through the glue coating cylinder 4. The first servo motor 3 is started to drive the glue coating cylinder 4 to rotate, so that the surface of the glue coating cylinder 4 allows the brush head to apply glue to the raw material paper. The surface of the glue coating cylinder 4 is provided with a through hole. The delivery pump 5 is started to deliver glue to the inside of the glue coating cylinder 4 through the delivery pipe 6, and smear it on the surface of the raw material paper through the through hole provided on the surface of the glue coating cylinder 4. The connecting rod 701 and the cam 702 are synchronously driven to rotate by the glue coating cylinder 4, and then the shape of the cam 702 contacts and squeezes the two sets of triggers. The first return spring 707 resets the trigger block 705, the piston 704 and the extension block 706 after the cam 702 is out of contact with the trigger block 705, so that the piston 704 moves back and forth, thereby collecting gas and delivering the gas to the front end and the back end of the glue coating of the raw paper through the first gas pipe 709 and the second gas pipe 710. Blowing air to the front end of the glue coating of the raw paper can effectively remove dust and impurities on the surface of the raw paper, thereby ensuring the uniformity of the glue coating of the raw paper by the glue coating cylinder 4, and blowing air to the back end of the glue coating of the raw paper can remove the glue layer produced by the glue coating. The bubbles are blown out and eliminated, thereby improving the fit of subsequent pressing, and after the glue coating is completed, it falls into the interior of the processing tank 10, and the hydraulic cylinder 11 is started to push the pressing plate 12 downward to press the raw material paper in the processing tank 10, and by pressing the limit pad block 801, the first limit plate 803 squeezes the limit block 808, and the limit block 808 shrinks inward. After the first limit plate 803 passes, the second return spring 807 resets the limit block 808, so that the limit block 808 is located at the bottom end of the first limit plate 803, limiting the first limit plate 803, and then limiting the limit pad block 801. It is necessary to replace the limit pad blocks 801 of different heights. When the second limit plate 804 is pushed, the limit block 808 is pressed, and the limit block 808 contracts inward. After the second limit plate 804 passes, the second return spring 807 resets the limit block 808, so that the limit block 808 is located at the bottom end of the second limit plate 804 and lifts the second limit plate 804, so that the second limit plate 804 and the first limit plate 803 are in contact. At this time, pulling the limit block 801 can disconnect the limit block 801 from the slot 805, and then quickly replace the limit block 801. By quickly disassembling and replacing the limit block 801, the adaptability of the device during process replacement is improved.

[0043] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A corrugated cardboard automatic forming and pressing device, comprising a housing (1), characterized in that: A foot seat (2) is installed at the bottom end of the shell (1), a first servo motor (3) is fixed to the outside of the shell (1), a blowing mechanism (7) is provided at the rotating end of the first servo motor (3), one end of the shell (1) is movably connected to a glue coating cylinder (4), a delivery pump (5) is installed on the outside of the glue coating cylinder (4), one end of the delivery pump (5) is connected to a delivery pipe (6), and a limiting mechanism (8) is installed inside the shell (1); The blowing mechanism (7) comprises a connecting rod (701), a cam (702) and an air collecting seat (703); the connecting rod (701) is fixed to the rotating end of the first servo motor (3); the cam (702) is fixed to the outside of the connecting rod (701); the air collecting seat (703) is fixed to the inside of the housing (1); and the inside of the air collecting seat (703) is movably connected to a piston (704); The limiting mechanism (8) comprises a limiting pad (801), a first limiting rod (802) and a first limiting plate (803); the limiting pad (801) is movably connected to the interior of the housing (1); the first limiting rod (802) is fixed to the exterior of the limiting pad (801); the first limiting plate (803) is fixed to the exterior of the first limiting rod (802); and the second limiting plate (804) is movably connected to the exterior of the first limiting rod (802).

2. The automatic corrugated cardboard forming and pressing device according to claim 1, characterized in that: A trigger block (705) is fixed to the outside of the piston (704), an extension block (706) is fixed to the outside of the trigger block (705), a first return spring (707) is fixed to the outside of the extension block (706), a positioning block (708) is fixed to the outside of the first return spring (707), one end of the gas collecting seat (703) is connected to a first gas pipe (709), and the output end of the first gas pipe (709) is connected to a second gas pipe (710).

3. The automatic corrugated cardboard forming and pressing device according to claim 2, characterized in that: The gas collecting seat (703) is provided with two groups symmetrically distributed about the central axis of the cam (702), the piston (704) and the gas collecting seat (703) are in abutting connection, the contact surface between the trigger block (705) and the cam (702) is arc-shaped, and the extension block (706) and the gas collecting seat (703) are in sliding connection.

4. The automatic corrugated cardboard forming and pressing device according to claim 2, characterized in that: The extension block (706) is provided with two groups symmetrically distributed about the central axis of the gas collecting seat (703), the first return spring (707) is provided with two groups symmetrically distributed about the central axis of the extension block (706), and the positioning block (708) is fixed on the outside of the gas collecting seat (703).

5. The automatic corrugated cardboard forming and pressing device according to claim 2, characterized in that: The first return spring (707) is used to squeeze the extension block (706) and keep it moving inwards. The positioning block (708) is provided with two groups symmetrically distributed about the central axis of the gas collecting seat (703).

6. The automatic corrugated cardboard forming and pressing device according to claim 1, characterized in that: A slot (805) is provided inside the shell (1), a second limiting rod (806) is movably connected inside the shell (1), a second return spring (807) is sleeved on the outside of the second limiting rod (806), and a limiting block (808) is fixed on the outside of the second limiting rod (806). The second limiting plate (804) fixedly connected to the limiting pad (801) is fixed on the top side of the limiting groove close to the shell (1); the depth of the slot (805) is equal to 2 to 3 times the total length of the second limiting plate (804), the first limiting rod (802) and the first limiting plate (803), and the end 5 / 11 of the length of the slot (805) is a star-shaped structure, the inner diameter of the star-shaped structure is slightly smaller than the diameter of the first limiting plate (803); the outer diameter of the star-shaped structure is the same as the outer diameter of the other section of the slot (805).

7. The automatic corrugated cardboard forming and pressing device according to claim 1, characterized in that: The limiting pad (801) is provided with a plurality of groups of different heights. The limiting pad (801) is slidably connected to the housing (1). The diameter of the first limiting plate (803) is smaller than the diameter of the second limiting plate (804). The second limiting plate (804) is slidably fixedly connected to the first limiting rod (802).

8. The automatic corrugated cardboard forming and pressing device according to claim 6, characterized in that: The diameter of the slot (805) is larger than the diameter of the second limiting plate (804); the second limiting rod (806) is slidably connected to the housing (1); two groups of the second limiting rods (806) are provided; the second limiting rods (806) are symmetrically distributed about the central axis of the slot (805); the second return spring (807) is used to squeeze the second limiting rod (806) and the limiting block (808) and keep them moving inward; the outer wall of the limiting block (808) is an inclined surface.

9. The automatic corrugated cardboard forming and pressing device according to claim 1, characterized in that: A conveying mechanism (9) is installed at one end of the shell (1), a processing groove (10) is opened inside the shell (1), a hydraulic cylinder (11) is fixed at the top end of the shell (1), the hydraulic cylinder (11) is provided with two groups symmetrically distributed about the central axis of the shell (1), a pressing plate (12) is fixed at the bottom end of the hydraulic cylinder (11), four groups of positioning rods (13) are fixed inside the shell (1), and a control panel (14) is fixed outside the shell (1).

10. The automatic corrugated cardboard forming and pressing device according to claim 9, characterized in that: The conveying mechanism (9) comprises a second servo motor (901), a first transmission roller (902) and a second transmission roller (903); the second servo motor (901) is fixed to the outside of the housing (1); the first transmission roller (902) is fixed to the outside of the second servo motor (901); the second transmission roller (903) is rotatably connected to the inside of the housing (1); and a conveyor belt (904) is provided on the outside of the first transmission roller (902) and the second transmission roller (903).

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