Box cover forming machine

Abstract

The utility model discloses a box cover forming machine which comprises an assembly conveying belt, a grey board feeding device, a plastic uptake part feeding device and a lining paper feeding device, the grey board feeding device is located at an inlet of the assembly conveying belt, and the plastic uptake part feeding device and the lining paper feeding device are both located in the middle section of the assembly conveying belt. The plastic uptake part feeding device and the lining paper feeding device are sequentially distributed in the advancing direction of the assembly conveying belt, the lining paper feeding device comprises a lining paper bin and further comprises a lining paper mechanical arm, the lining paper ejecting mechanism is located at the bin bottom, the top of the bin wall is provided with two poking pieces, and the two poking pieces are connected with the lining paper mechanical arm. The paper pressing mechanism presses the B side of the lining paper, when the lining paper is carried, the lining paper mechanical arm adsorbs and lifts the A side of the lining paper, the double-piece-preventing shifting piece scrapes and shifts the A side of the lining paper, and then the lining paper mechanical arm drags the B side of the lining paper away from the paper pressing mechanism. According to the utility model, the problem that two or more pieces of lining paper are taken out at the same time can be avoided.

Description

Technical Field

[0001] This utility model belongs to the field of packaging box technology, specifically relating to a box lid forming machine. Background Technology

[0002] Wine is a liquid commodity, and on today's dazzling array of supermarket shelves, what often catches people's eye first is the wine's outer packaging—the wine box. Wine packaging plays a crucial role in wine sales, especially in attracting consumers, increasing product value, satisfying consumers' emotional needs, and strengthening brand and corporate image—a role that is increasingly recognized.

[0003] Wine boxes generally consist of a box body and a lid. The lid includes a gray board, a blister tray, and a liner. During production, the blister tray and the liner are glued to the gray board in sequence, and then pressure is applied to ensure a firm bond.

[0004] The existing Chinese utility model patent, entitled "A Device for Processing and Forming Cylindrical Wine Box Lids" with publication number CN221623156U, automates the production of cylindrical wine box lids through a series of processes including gray board feeding, blister feeding, inner liner feeding, gluing, robotic handling, blister handling, conveying and assembly, and dual-position bubble pressing. This automates the blister forming of the wine box lid and the gluing and conveying of the inner liner, effectively achieving automated gluing of the lid and the inner liner. It boasts high work efficiency, low labor intensity, and ensures the overall packaging effect, thus meeting the needs of manufacturers and consumers and possessing good economic value.

[0005] However, the aforementioned patent cannot avoid the problem of taking out two or more sheets of inner lining paper at the same time during the process of taking out the inner lining paper. Utility Model Content

[0006] To solve the above problems, this utility model provides a box lid forming machine that can avoid the problem of taking out two or more inner lining papers at the same time.

[0007] The embodiments of this utility model are achieved through the following technical solutions:

[0008] A box lid forming machine includes an assembly conveyor belt, a gray board feeding device, a blister packing device, and an inner liner feeding device. The gray board feeding device is located at the entrance of the assembly conveyor belt. The blister packing device and the inner liner feeding device are both located in the middle section of the assembly conveyor belt and are distributed sequentially along the travel direction of the assembly conveyor belt. The inner liner feeding device includes an inner liner hopper and a liner manipulator. The inner liner hopper includes a hopper wall, a liner top feeding mechanism, and a pressing mechanism. The liner top feeding mechanism is located at the bottom of the hopper. The top of the hopper wall is provided with an anti-double-sheet flap. The pressing mechanism presses the B side of the inner liner. When handling the inner liner, the liner manipulator absorbs and lifts the A side of the inner liner. The anti-double-sheet flap scrapes the A side of the inner liner, and then the liner manipulator drags the B side of the inner liner away from the pressing mechanism.

[0009] In one embodiment of this utility model, the anti-double-sheet flap includes a first flap and a second flap, wherein the height of the first flap from the inner lining paper is less than the height of the second flap from the inner lining paper.

[0010] In one embodiment of this utility model, the paper pressing mechanism includes a pressing block, a fixing block, and a connecting member. The fixing block is fixed to the bin wall, the connecting member is hinged to the fixing block, and the pressing block is connected to the connecting member.

[0011] In one embodiment of this utility model, the connecting member is provided with a slide rail, and the pressure block is sleeved on the slide rail through a slide groove.

[0012] In one embodiment of the present invention, a paper liner positioning mechanism is further included. The paper liner positioning mechanism includes a first positioning side plate, a second positioning side plate, and a base plate. The first positioning side plate and the second positioning side plate are distributed at right angles and are both located on the side of the base plate. The base plate is provided with a first correction component and a second correction component. The first correction component drives the inner liner paper to abut against the first positioning side plate, and the second correction component drives the inner liner paper to abut against the second positioning side plate.

[0013] In one embodiment of this utility model, both the first correction component and the second correction component include a negative pressure suction plate and a driving component. The negative pressure suction plate adsorbs the inner lining paper, and the driving component drives the inner lining paper to move towards the first positioning side plate and the second positioning side plate through the negative pressure suction plate.

[0014] In one embodiment of the present invention, the inner liner paper feeding device further includes a liner paper transfer robot, which transfers the inner liner paper on the substrate to the gray board on the assembly conveyor belt.

[0015] In one embodiment of this utility model, the paper-retaining robot includes a lateral movement drive, a lifting drive, and a paper-picking arm. The lateral movement drive drives the lifting drive to move along a preset direction, and the lifting drive drives the paper-picking arm to rise and fall. The paper-picking arm is equipped with a negative pressure suction cup for absorbing the inner lining paper.

[0016] In one embodiment of the present invention, the liner paper top feeding mechanism includes a hopper bottom plate and a top feeding drive component. The inner liner paper is stacked on the hopper bottom plate, and the top feeding drive component drives the hopper bottom plate to rise and fall.

[0017] In one embodiment of the present invention, the gray board loading device includes a gray board feeding bin and a gray board loading robot, wherein the gray board loading robot grabs the gray board in the gray board feeding bin and places it on the assembly conveyor belt.

[0018] In one embodiment of the present invention, the blister packing device includes a blister packing conveyor belt and a blister packing robot. The blister packing robot grabs the blister packs in the blister packing conveyor belt and places them on the gray board on the assembly transfer belt.

[0019] In one embodiment of the present invention, a pressure holding device is provided at the outlet of the assembly conveyor belt. The pressure holding device includes a pressure holding drive and a pressure holding plate. The pressure holding drive fixes the assembly conveyor belt, and the pressure holding plate is provided with a clearance hole to avoid the blister pack. The pressure holding drive drives the pressure holding plate downward to cover the box.

[0020] The technical solution of this utility model has at least the following advantages and beneficial effects:

[0021] This invention features an anti-double-sheet pry bar and a paper-pressing mechanism on the inner liner paper hopper. The paper-pressing mechanism gently presses down on side B of the inner liner paper stack, while a paper-pressing robot absorbs and lifts side A of the inner liner paper. The anti-double-sheet pry bar scrapes side A of the inner liner paper to remove excess paper, preventing the paper-pressing robot from lifting two or more inner liner papers at a time. This ensures that the paper-pressing robot can only lift one inner liner paper at a time, thus completing the production of the box lid simultaneously. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the box lid forming machine of this utility model;

[0024] Figure 2This is a top view of the inner liner paper feeding device of this utility model;

[0025] Figure 3 This is a top view of the inner liner paper feeding device of this utility model;

[0026] Figure 4 This is a schematic diagram of the connecting components in the paper pressing mechanism of this utility model;

[0027] Figure 5 This is a schematic diagram of the first embodiment of the paper pressing mechanism of this utility model;

[0028] Figure 6 This is a schematic diagram of the second embodiment of the paper pressing mechanism of this utility model;

[0029] Figure 7 This is a schematic diagram of the pressure-holding device in this utility model;

[0030] Figure 8 This is a schematic diagram of the box lid in this utility model;

[0031] Figure 9 This is a top view of the box lid in this utility model.

[0032] Icons: 1-Assembly conveyor belt, 2-Gray board loading device, 21-Gray board feeding bin, 22-Gray board loading robot, 3-Blister part loading device, 31-Blister part feeding conveyor belt, 32-Blister part loading robot, 4-Inner liner paper loading device, 411-Bin wall, 412-Inner liner paper top-loading mechanism, 4131-Pressure block, 4132-Fixing block, 4133-Connector, 4134-Slide rail, 4141-First lever, 4142 - Second paddle, 421- Lateral movement drive, 422- Lifting cylinder, 423- Paper picking arm, 431- First positioning side plate, 432- Second positioning side plate, 433- Base plate, 434- First correction assembly, 435- Second correction assembly, 436- Negative pressure suction plate, 44- Liner paper transfer robot, 5- Glue roller, 6- Pressure holding device, 61- Pressure holding drive, 62- Pressure holding button, 7- Gray board, 8- Inner liner paper, 9- Blister part. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0036] In the description of this utility model, it should be noted that if terms such as "inner" or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0037] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "configure," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] A box lid forming machine includes an assembly conveyor belt 1, a gray board feeding device 2, a blister packing device 3, and an inner liner paper feeding device 4. The gray board feeding device 2 is located at the entrance of the assembly conveyor belt 1. The blister packing device 3 and the inner liner paper feeding device 8 are both located in the middle section of the assembly conveyor belt 1, and are sequentially distributed along the travel direction of the assembly conveyor belt 1. The inner liner paper feeding device 8 includes an inner liner paper hopper. The device also includes a liner paper manipulator. The inner liner paper bin includes a bin wall 411, a liner paper top feeding mechanism 412, and a paper pressing mechanism. The liner paper top feeding mechanism 412 is located at the bottom of the bin. The top of the bin wall 411 is equipped with anti-double-sheet scrapers. The paper pressing mechanism presses the B side of the inner liner paper 8. When the inner liner paper 8 is being transported, the liner paper manipulator absorbs and lifts the A side of the inner liner paper 8. The anti-double-sheet scrapers scrape the A side of the inner liner paper 8. Then, the liner paper manipulator drags the B side of the inner liner paper 8 away from the paper pressing mechanism.

[0039] The following embodiments are further elaborated based on the above solutions.

[0040] Example

[0041] Please refer to Figure 1-9 A box lid forming machine includes an assembly conveyor belt 1, a gray board feeding device 2, a blister packing device 3, an inner liner paper feeding device 4, and a glue applicator roller 5. The gray board feeding device 2 is located at the entrance of the assembly conveyor belt 1. The blister packing device 3 and the inner liner paper feeding device 4 are both located in the middle section of the assembly conveyor belt 1 and are distributed sequentially along the travel direction of the assembly conveyor belt 1. The glue applicator roller 5 is located between the blister packing device 3 and the inner liner paper feeding device 4 and is used to apply glue to the inner liner paper 8 and the blister packing 9. A pressure holding device 6 is provided at the exit of the assembly conveyor belt. The gray board feeding device 2 places gray boards 7 one by one on the assembly conveyor belt 1. Then, after the blister packing 9 and the inner liner paper 8 are applied with glue, they are placed on the gray boards 7 in sequence. Finally, the pressure holding device 6 presses and holds the box lid to ensure that the gray boards 7, the inner liner paper 8, and the blister packing 9 are firmly bonded together.

[0042] In this embodiment, the gray board loading device 2 includes a gray board feeding bin 21 and a gray board loading robot 22. The gray board loading robot 22 can be a multi-axis robot or a robot with the same structure as the liner paper transfer robot 44. In this embodiment, the gray board loading robot 22 adopts a robot with the same structure as the liner paper transfer robot 44. During production, the gray board loading robot 22 grabs the gray board 7 in the gray board feeding bin 21 and places it on the assembly conveyor belt. It should be noted that before the gray board 7 on the assembly conveyor belt reaches the corresponding position of the blister packing device 3, the assembly conveyor belt 1 can also be equipped with a gray board correction device. Two cylinders are used to drive two push plates to abut against the two right-angled edges of the gray board 7 to correct the posture of the gray board 7 on the assembly conveyor belt 1, ensuring that the subsequent blister pack 9 and inner liner paper 8 can be smoothly pasted with the gray board 7, while ensuring that the positional errors of the blister pack 9 and inner liner paper 8 relative to the gray board 7 are within the design range.

[0043] In this embodiment, the blister packing device 3 includes a blister packing conveyor belt 31 and a blister packing robot 32. The blister packing robot 32 can be a multi-axis robot or a robot with the same structure as the liner transfer robot 44. In this embodiment, the blister packing robot 32 has the same structure as the liner transfer robot 44. However, due to the shape characteristics of the blister pack 9, the blister packing robot 32 differs from the liner transfer robot 44 in that it only uses a single negative pressure suction cup to pick up the blister pack 9. The external blister pack 9 hopper places the blister pack 9 one by one onto the blister packing conveyor belt 31, or the blister pack 9 is placed one by one manually onto the blister packing conveyor belt 31. Then, the blister packing robot 32 grabs the blister pack 9 in the blister packing conveyor belt 31 and places it on the gray board 7 on the assembly transfer belt. During production, the lifting cylinder 422 of the blister packing robot 32 moves laterally to the blister packing conveyor belt 31. The lifting cylinder 422 drives the negative pressure suction cup to descend and pick up the blister pack 9. Then, the lifting cylinder 422 drives the negative pressure suction cup to rise and move laterally to the assembly conveyor belt 1. During the lateral movement, the blister pack 9 passes through the glue-coating roller 5, which is covered with glue, to achieve the purpose of applying glue to the blister pack 9. Finally, the lifting cylinder 422 drives the negative pressure suction cup to descend and pick up the glued blister pack 9 and place it on the corresponding gray board 7.

[0044] In this embodiment, the inner liner paper feeding device 4 includes an inner liner paper hopper, a liner paper robot, a liner paper positioning mechanism, and a liner paper transfer robot 44. The inner liner paper bin includes a bin wall 411, a liner paper top feeding mechanism 412, and a paper pressing mechanism. The liner paper top feeding mechanism 412 is located at the bottom of the bin. The liner paper top feeding mechanism 412 can adopt a lifting structure with a motor and a lead screw, or a lifting structure with a motor and a KK module. In this embodiment, the liner paper top feeding mechanism 412 adopts a motor and a KK module, that is, the liner paper top feeding mechanism 412 includes a bin bottom plate and a top feeding drive component. The top feeding drive component includes a motor-driven KK module. The bin bottom plate is installed on the slider of the KK module. The inner liner paper is stacked on the bin bottom plate. The motor drives the bin bottom plate to rise and fall through the KK module. At the same time, a sensor is also provided on the top of the bin to detect the position of the top of the inner liner paper stack. When the top of the inner liner paper stack cannot trigger the sensor, the controller starts the motor to raise the bin bottom plate until the sensor is triggered and the motor stops, ensuring that the inner liner paper 8 in the bin is always in a position that is convenient for the robot to pick up.

[0045] In this embodiment, the paper pressing mechanism includes a pressing block 4131 and a connecting assembly. The connecting assembly includes a fixing block 4132 and a connecting member 4133. The fixing block 4132 is fixed to the bin wall 411. The connecting member 4133 can be a rod or other structure. In this embodiment, the connecting member 4133 is a connecting rod, which is hinged to the fixing block 4132. At the same time, the pressing block 4131 is sleeved on the connecting rod. During the production process, the pressing block 4131 presses on the B side of the inner liner paper 8. Because the position of the top of the inner liner paper stack will change slightly, the connecting rod and the fixing block 4132 are hinged. At the same time, the pressing block 4131 is sleeved on the connecting rod to facilitate the free movement of the pressing block 4131 and the connecting rod. This achieves the purpose of using the weight of the pressing block 4131 to press the inner liner paper stack, avoiding the pressing block 4131 pressing too tightly, which would cause the inner liner paper 8 to fail to be picked up.

[0046] It should be noted that the connecting rod and the pressure block 4131 can also be connected by a slide rail 4134. That is, the connecting rod is equipped with a slide rail 4134, and the pressure block 4131 is fitted onto the slide rail 4134 through a groove. Moreover, there is a gap between the groove and the slide rail 4134 to ensure that the pressure block 4131 does not detach from the slide rail 4134 when it presses on the inner lining paper stack. At the same time, there can be a small relative movement distance between the pressure block 4131 and the slide rail 4134. The slide rail 4134 connection has a good tolerance for the height difference of the inner lining paper stack. When the inner lining paper stack is high, the pressure block 4131 can be manually adjusted along the slide rail 4134. When the inner lining paper stack is low, the pressure block 4131 can be manually lowered, or the pressure block 4131 can automatically slide down to adapt to the height of the inner lining paper stack.

[0047] In this embodiment, an anti-double-tensioning lever is also fixed to the top of the bin wall 411. The anti-double-tensioning lever includes a first lever 4141 and a second lever 4142, such as... Figure 3 As shown, in the inner liner paper bin, the height of the first paddle 4141 from the top of the first inner liner paper 8 of the inner liner paper stack is less than the height of the second paddle 4142 from the top of the first inner liner paper 8 of the inner liner paper stack. The anti-double-sheet paddle corresponds to the A side of the inner liner paper 8. When the inner liner paper robot handles the inner liner paper 8, the inner liner paper robot absorbs and lifts the A side of the inner liner paper 8. By scraping the A side of the inner liner paper 8 with the lower first paddle 4141 and the upper second paddle 4142, the excess inner liner paper 8 is removed from the inner liner paper 8 absorbed by the robot. Then the inner liner paper robot moves horizontally and drags the absorbed inner liner paper 8, so that the B side of the absorbed inner liner paper 8 is removed from the pressure block 4131. At the same time, due to the pressure of the pressure block 4131, the remaining inner liner paper 8 will not be carried away by the inner liner paper 8 that has been taken away.

[0048] This embodiment uses an anti-double-sheet pry bar and a paper-pressing mechanism on the inner liner paper hopper. The paper-pressing mechanism gently presses the B side of the inner liner paper stack, while the liner paper robot absorbs and lifts the A side of the inner liner paper 8. The anti-double-sheet pry bar scrapes the A side of the inner liner paper 8 to remove excess inner liner paper 8, thus preventing the liner paper robot from lifting two or more inner liner papers 8 at a time and ensuring that the liner paper robot can only lift one inner liner paper 8 at a time.

[0049] In this embodiment, the paper liner robot includes a transverse drive 421, a lifting drive, and a paper-picking arm 423. The transverse drive 421 can be a motor-driven KK module or other structures capable of linear reciprocating motion. The lifting drive can be a cylinder or other structures capable of lifting. In this embodiment, the transverse drive 421 is a motor-driven KK module, and the lifting drive is a lifting cylinder 422. The paper-picking arm 423 is connected to the lifting cylinder 422. The paper-picking arm 423 is equipped with a negative pressure suction cup capable of adsorbing the inner liner paper 8. The transverse drive 421 drives the lifting cylinder 422 to move along a preset direction, and the lifting cylinder 422 drives the paper-picking arm 423 to lift.

[0050] In this embodiment, the liner paper robot takes out the inner liner paper 8 from the hopper and places it on the liner paper positioning mechanism. Since the inner liner paper 8 is pasted to the gray board 7, it is necessary to ensure that the inner liner paper 8 and the gray board 7 have a relatively definite position. Therefore, before the inner liner paper 8 is pasted to the gray board 7, the position of the inner liner paper 8 needs to be positioned and calibrated. Therefore, the liner paper positioning mechanism is needed to position and calibrate the inner liner paper 8. Moreover, the liner paper positioning mechanism is located on one side of the inner liner paper hopper.

[0051] Specifically, the liner paper positioning mechanism includes a first positioning side plate 431, a second positioning side plate 432, and a base plate 433. The first positioning side plate 431 and the second positioning side plate 432 are distributed at right angles and are both located on the side of the base plate 433. The base plate 433 is provided with a first correction component 434 and a second correction component 435. The first correction component 434 drives the inner liner paper 8 to abut against the first positioning side plate 431, and the second correction component 435 drives the inner liner paper 8 to abut against the second positioning side plate 432. With the first positioning side plate 431 and the second positioning side plate 432 as references, the inner liner paper 8 is driven to move towards the references by the first correction component 434 and the second correction component 435 to achieve the positioning calibration of the inner liner paper 8.

[0052] In this embodiment, both the first correction component 434 and the second correction component 435 include a negative pressure suction plate 436 and a driving component. The upper surface of the negative pressure suction plate 436 is flush with the upper surface of the substrate 433, and the negative pressure suction plate 436 is connected to an external vacuum pump. The driving component can be a hydraulic cylinder, a pneumatic cylinder, or other mechanism capable of linear motion. In this embodiment, a pneumatic cylinder is used to push the negative pressure suction plate 436 closer to or further away from the positioning side plate. When the inner liner paper 8 is placed on the substrate 433, the negative pressure suction plate 436 corresponding to the first positioning side plate 431 adsorbs the inner liner paper 8 and moves toward the first positioning side plate 431, causing the inner liner paper 8 to move against the first positioning side plate 431. Then, the negative pressure suction plate 436 corresponding to the first positioning side plate 431 stops adsorbing, and the negative pressure suction plate 436 corresponding to the second positioning side plate 432 adsorbs the inner liner paper 8 and moves toward the second positioning side plate 432, causing the inner liner paper 8 to move against the second positioning side plate 432, thereby achieving the purpose of positioning and calibrating the inner liner paper 8.

[0053] The inner liner paper feeding device 4 also includes a liner paper transfer robot 44, which transfers the inner liner paper 8 on the substrate 433 to the gray board 7 on the assembly conveyor belt 1. The liner paper transfer robot 44 can be a multi-axis robot or a robot structure combining a gantry and a KK module. In this embodiment, a robot structure combining a gantry and a KK module is used. Specifically, the liner paper transfer robot 44 includes a gantry, a transverse drive 421, a lifting cylinder 422, and several negative pressure suction cups. The transverse drive 421 is fixed on the gantry, and the transverse drive uses a motor-driven KK module. The lifting cylinder 422 is mounted on... On the slider of the KK module, a connecting plate is installed on the lifting cylinder 422. Several negative pressure suction cups are installed on the connecting plate. During production, the lifting cylinder 422 of the paper liner transfer robot 44 moves laterally to the paper liner positioning mechanism. The lifting cylinder 422 drives the negative pressure suction cups to descend and pick up the inner liner paper 8 after the substrate 433 has been positioned and calibrated. Then, the lifting cylinder 422 drives the negative pressure suction cups to rise and move laterally to the assembly conveyor belt 1. During the lateral movement, the inner liner paper 8 passes through the glue-coating roller 5, which is covered with glue, to achieve the purpose of applying glue to the inner liner paper 8. Finally, the lifting cylinder 422 drives the negative pressure suction cups to descend and pick up the glued inner liner paper 8 and place it on the corresponding gray board 7.

[0054] The pressure holding device 6 includes a pressure holding drive 61 and a pressure holding plate 62. The pressure holding drive 61 can be a hydraulic cylinder, a pneumatic cylinder, or other structures that can achieve linear reciprocating motion. In this embodiment, the pressure holding drive 61 is a pressure holding pneumatic cylinder, which is fixed on the assembly conveyor belt 1. The pressure holding plate 62 is connected to the pressure holding pneumatic cylinder. The pressure holding pneumatic cylinder drives the pressure holding plate to rise and fall. The pressure holding plate 62 is provided with a clearance hole to avoid the blister pack 9. When the inner lining paper 8 is pasted on the gray board 7, the box cover assembly is completed. Then, when the assembly conveyor belt 1 sends the box cover to the pressure holding device 6, the assembly conveyor belt 1 stops, and the pressure holding pneumatic cylinder drives the pressure holding plate 62 to fall and press the box cover, ensuring that the inner lining paper 8 and the blister pack 9 are firmly pasted on the gray board 7. After the pressure holding time is predetermined, the pressure holding pneumatic cylinder drives the pressure holding plate 62 to rise, and the assembly conveyor belt 1 sends the box cover to the machine outlet.

[0055] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A box cover forming machine comprising an assembly conveyor, a grey board feeding device, a blister feeding device and an inner liner feeding device, characterized in that, The gray board feeding device is located at the entrance of the assembly conveying belt, the blister piece feeding device and the inner liner paper feeding device are both located at the middle section of the assembly conveying belt, and the blister piece feeding device and the inner liner paper feeding device are sequentially distributed along the running direction of the assembly conveying belt, The inner liner paper feeding device comprises an inner liner paper bin, and further comprises a liner paper mechanical arm, the inner liner paper bin comprises a bin wall, a liner paper top feeding mechanism and a paper pressing mechanism, the liner paper top feeding mechanism is located at the bottom of the bin, the top of the bin wall is provided with a double sheet preventing push piece, and the paper pressing mechanism presses the B side of the inner liner paper, When the inner liner paper is carried, the liner paper mechanical arm adsorbs and lifts the A side of the inner liner paper, the double sheet preventing push piece scrapes the A side of the inner liner paper, and then the liner paper mechanical arm drags the B side of the inner liner paper away from the paper pressing mechanism.

2. A box lid forming machine according to claim 1, wherein The double sheet preventing push piece comprises a first push piece and a second push piece, the height of the first push piece from the inner liner paper is less than the height of the second push piece from the inner liner paper.

3. A box lid forming machine according to claim 1, wherein The paper pressing mechanism is provided with a pressing block, a fixing block and a connecting piece, the fixing block is fixed to the bin wall, the connecting piece is hinged to the fixing block, and the pressing block is connected to the connecting piece.

4. A box lid forming machine according to claim 3, wherein The connecting piece is provided with a sliding rail, and the pressing block is sleeved on the sliding rail through a sliding groove.

5. A box cover forming machine according to claim 1, wherein Further comprising a liner paper positioning mechanism, the liner paper positioning mechanism comprises a first positioning side plate, a second positioning side plate and a base plate, the first positioning side plate and the second positioning side plate are distributed at a right angle and are both located at the side edges of the base plate, the base plate is provided with a first deviation correcting assembly and a second deviation correcting assembly, the first deviation correcting assembly drives the inner liner paper to abut against the first positioning side plate, and the second deviation correcting assembly drives the inner liner paper to abut against the second positioning side plate.

6. A box lid forming machine according to claim 5, wherein The first deviation correcting assembly and the second deviation correcting assembly both comprise a negative pressure suction plate and a driving piece, the negative pressure suction plate adsorbs the inner liner paper, and the driving piece drives the inner liner paper to move towards the first positioning side plate and the second positioning side plate through the negative pressure suction plate.

7. A box lid forming machine according to claim 6, wherein The inner liner paper feeding device further comprises a liner paper transfer mechanical arm, the liner paper transfer mechanical arm transfers the inner liner paper on the base plate to the gray board on the assembly conveying belt.

8. A box lid forming machine according to claim 1, wherein The gray board feeding device comprises a gray board feeding bin and a gray board feeding mechanical arm, the gray board feeding mechanical arm grabs the gray board in the gray board feeding bin and places it on the assembly conveying belt.

9. A box cover forming machine according to claim 1, wherein The blister piece feeding device comprises a blister piece feeding conveying belt and a blister piece feeding mechanical arm, the blister piece feeding mechanical arm grabs the blister piece in the blister piece feeding conveying belt and places it on the gray board on the assembly conveying belt.

10. A box lid forming machine according to claim 1, wherein The outlet of the assembly conveying belt is provided with a pressure maintaining device, the pressure maintaining device comprises a pressure maintaining driving piece and a pressure maintaining pressing plate, the pressure maintaining driving piece fixes the assembly conveying belt, the pressure maintaining pressing plate is provided with a position avoiding hole for avoiding the blister piece, and the pressure maintaining driving piece drives the pressure maintaining pressing plate to move downwards.

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