Opening mechanism

Abstract

The utility model belongs to the technical field of paper box opening, and mainly relates to an opening mechanism which comprises a mounting seat fixedly assembled on a machine frame, a linear driving piece is arranged on the mounting seat, a connecting piece is fixedly assembled at the telescopic end of the linear driving piece, and the linear driving piece drives the connecting piece to move. A plurality of tongue supporting pieces are hinged to the front side of the mounting base, the connecting piece is hinged to the tongue supporting pieces, the linear driving piece drives the tongue supporting pieces to rotate around the hinged axis, and each tongue supporting piece makes contact with the corresponding side page so as to open the carton. In the process that the linear driving piece drives the tongue supporting piece to be opened, the tongue supporting piece can make contact with the side page of the paper box so as to open the side page of the paper box, and articles can be conveniently put into an inner cavity of the paper box subsequently; meanwhile, along with driving of the linear driving piece to the tongue supporting piece, the opening area of the tongue supporting piece is larger and larger, so that the opening mechanism can adapt to paper boxes of different specifications and sizes and can be directly applied no matter how large the specifications of the paper boxes are, and the opening mechanism does not need to be adjusted.

Description

Technical Field

[0001] This utility model belongs to the field of paper box support technology, and mainly relates to a support mechanism. Background Technology

[0002] The cardboard box has a main body and a side panel on top of the main body. The side panel can be folded open or closed to open or close the cavity of the main body. In automated packaging processes, a flap-opening device is required to fold the side panel outwards first to prevent it from obstructing the product when it is subsequently loaded into the cavity of the main body.

[0003] Patent application CN115743765A discloses a spreading device and an automated packaging machine. The spreading device includes a first pressing member and a second pressing member. Driven by a mounting base, the first pressing member pushes the side panel of the carton from top to bottom, causing the side panel to flip outward relative to the main body of the carton to a first predetermined posture. The second pressing member pushes the side panel in the first predetermined posture from top to bottom, causing the side panel in the first predetermined posture to continue to flip outward relative to the main body to a second predetermined posture.

[0004] When the cardboard box that needs to be opened is large, the first and second pressing parts in the opening device cannot reach the corresponding side page. The first and second pressing parts will all enter the cavity of the cardboard box body, making it impossible to open the box. Therefore, the application range of this opening device is small and it is not suitable for opening the side pages of cardboard boxes of various sizes. Utility Model Content

[0005] This invention provides a support mechanism to solve the problem that the existing support devices have a limited range of applications.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] A mouth-opening mechanism is used to be installed on the frame of a mouth-opening device and is directly opposite the cavity of a carton. The mouth-opening mechanism includes a mounting base for fixed assembly on the frame. The mounting base is provided with a linear drive member that can extend and retract back and forth. A connecting member is fixedly assembled on the telescopic end of the linear drive member. The linear drive member drives the connecting member to move.

[0008] The front side of the mounting base is hinged with multiple support tongues, and the hinge axes of the multiple support tongues are located in the same plane. The connector is hinged to the multiple support tongues, so that the linear drive drives the support tongues to rotate around the hinge axis. Each support tongue contacts the corresponding side page to open the cardboard box.

[0009] It has the following beneficial effects: During the process of the linear drive unit driving the tongue to open, the tongue will contact the side of the cardboard box to open the side of the cardboard box, making it easier to put items into the inner cavity of the cardboard box; at the same time, as the linear drive unit drives the tongue, the opening area of ​​the tongue will become larger and larger, so it can adapt to cardboard boxes of different sizes, and can be directly used regardless of the size of the cardboard box, without the need to adjust the opening mechanism.

[0010] Furthermore, the mounting base is provided with a waist-shaped groove, and the connector has a connecting part that passes through the waist-shaped groove. The linear drive drives the connecting part on the connector to move in the waist-shaped groove.

[0011] One of the plurality of the support tongues is located on the side of the mounting base away from the linear drive member, and the support tongue is hinged to the connecting part.

[0012] It has the following beneficial effects: Since one of the support tongues is on the back of the mounting base, the linear drive cannot directly drive the support tongue to rotate. Therefore, a waist-shaped groove needs to be opened on the mounting base, and the connecting part extends out of the waist-shaped groove. The support tongue is hinged to the connecting part extending out of the waist-shaped groove to realize the rotation of the support tongue.

[0013] Furthermore, the mounting base includes a mounting plate for fixed assembly on the frame and a horizontal plate fixedly assembled with the mounting plate. The linear drive component is disposed on the mounting plate, the waist-shaped groove is disposed on the horizontal plate, and a plurality of the support tongues are disposed on the front side of the horizontal plate.

[0014] Furthermore, the connector includes a connecting block and a plurality of connecting rods hinged to the connecting block. The connecting block is connected to the telescopic end of the linear drive. The plurality of connecting rods are respectively hinged to corresponding support tongues. The connecting block has the connecting portion, and one of the connecting rods is hinged to the connecting portion.

[0015] Furthermore, the connecting rod is a telescopic rod with an adjustable length.

[0016] It has the following beneficial effects: the connecting rod is telescopic, which can change the telescopic distance of the linear drive component. When the opening angle of the cardboard box is constant, if the connecting rod is extended, the telescopic distance of the linear drive component will be shortened; if the opening angle of the cardboard box is constant, if the connecting rod is shortened, the telescopic distance of the linear drive component will be lengthened.

[0017] Furthermore, the connecting rod includes two connecting heads and a threaded rod that is threadedly connected to the two connecting heads respectively, and the two connecting heads are respectively hinged to a connecting block and a corresponding support tongue.

[0018] It has the following advantages: the threads of the two connectors on the threaded rod are in opposite directions, so the distance between the two connectors can be adjusted by turning the threaded rod.

[0019] Furthermore, the outer surface of the tongue is a plane, which is used to contact the side panels of the cardboard box to open the cardboard box.

[0020] Furthermore, the connector has a through hole, the mounting base passes through the through hole, and the linear drive drives the connector to slide on the mounting base. Attached Figure Description

[0021] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0022] Figure 1 This is a diagram showing the state of the cardboard box when the flap mechanism opens in Example 1;

[0023] Figure 2 This is a first-view structural schematic diagram of the support mechanism in Example 1;

[0024] Figure 3 This is a schematic diagram of the support mechanism from a second perspective in Example 1;

[0025] Figure 4 This is a structural schematic diagram of the support mechanism in Example 1 from a third-person perspective;

[0026] Figure 5 This is a structural schematic diagram of the support mechanism from a fourth perspective in Example 1;

[0027] Figure 6 This is a schematic diagram of the connecting rod in Example 1;

[0028] Figure 7 This is a diagram showing the state of the cardboard box when the two support mechanisms in Example 1 are opened;

[0029] Figure 8 This is a schematic diagram of the support mechanism, which omits a portion of the structure in Example 2.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Cardboard box; 2. Spreading mechanism; 3. Side panel; 4. Mounting base; 5. Linear drive; 6. Connector; 7. Support tongue; 8. Connecting rod; 9. Waist-shaped groove; 10. Connecting block; 11. Mounting plate; 12. Horizontal plate; 13. Reinforcing rib; 14. Connecting part; 15. Connecting head; 16. Threaded rod; 17. Through hole. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0033] The following describes various non-limiting embodiments of this utility model. Any number of elements in the accompanying drawings is for illustrative purposes only and not for limitation, and any naming is for distinction only and has no limiting meaning. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0034] Example 1

[0035] like Figure 1 , Figure 2 As shown, a flap opening mechanism is installed on the frame of a flap opening device, directly facing the cavity of the cardboard box 1. When the flap opening mechanism 2 is opened, it contacts the side page 3. The flap opening mechanism 2 includes a mounting base 4 for fixed assembly on the frame. The mounting base 4 is provided with a linear drive member 5 that can extend and retract back and forth. A connecting member 6 is fixedly assembled on the telescopic end of the linear drive member 5. The linear drive member 5 drives the connecting member 6 to move.

[0036] In this embodiment, the linear drive 5 is a cylinder. The fixed section of the cylinder is fixed on the mounting base 4, and the telescopic end of the cylinder is connected to the connector 6. The cylinder telescopically drives the connector 6 to move.

[0037] In other embodiments, the linear drive 5 is a hydraulic cylinder or an electric actuator.

[0038] like Figures 3-5 As shown, the front side of the mounting base 4 is hinged with multiple support tongues 7. The positions of the support tongues 7 correspond one-to-one with the positions of the side panels 3 of the cardboard box 1, and the number of support tongues 7 is the same as the number of side panels 3 of the cardboard box 1. The hinge axes of the multiple support tongues 7 are located in the same plane. The connecting member 6 is hinged to the multiple support tongues 7, so that the linear drive member 5 drives the support tongues 7 to rotate around the hinge axis. Each support tongue 7 contacts the corresponding side panel 3 to open the cardboard box 1. In this embodiment, the hinge axis of the same support tongue 7 and the hinge axis of the connecting rod 8 connected to it extend in the same direction.

[0039] In this embodiment, there are four tongue-support pieces 7, which is the same as the number of side pages 3 of the cardboard box 1.

[0040] In other embodiments, the number of tongue-supporting pieces 7 can be one, two, three, or more than five, depending on the number of side pages 3 of the cardboard box 1 or one's actual needs.

[0041] During the process of the linear drive 5 driving the tongue 7 to open, the tongue 7 will contact the side panel 3 of the cardboard box 1 to open the side panel 3 of the cardboard box 1, making it easier to put items into the inner cavity of the cardboard box 1. At the same time, as the linear drive 5 drives the tongue 7, the opening area of ​​the tongue 7 will become larger and larger, so that it can adapt to cardboard boxes 1 of different sizes. No matter how large the cardboard box 1 is, it can be used directly without adjusting the opening mechanism 2.

[0042] Specifically, such as Figures 2-4 As shown, in this embodiment, the mounting base 4 is provided with a waist-shaped groove 9, and the connector 6 has a connecting portion 14 that passes through the waist-shaped groove 9. The linear drive 5 drives the connecting portion 14 on the connector 6 to move in the waist-shaped groove 9. In this embodiment, the waist-shaped groove 9 is large enough for the connecting portion 14 to move in the moving direction of the connector 6, so that the waist-shaped groove 9 will not ultimately affect the opening of the cardboard box 1 by the supporting mechanism 2. One of the multiple support tongues 7 is located on the side of the mounting base 4 away from the linear drive 5. The support tongue 7 is hinged to the connecting portion 14 that extends out of the waist-shaped groove 9. Because one of the support tongues 7 is on the back of the mounting base 4, the linear drive 5 cannot directly drive the support tongue 7 to rotate. Therefore, a waist-shaped groove 9 needs to be opened on the mounting base 4, and the connecting portion 14 extends out of the waist-shaped groove 9. The support tongue 7 is hinged to the connecting portion 14 that extends out of the waist-shaped groove 9 to realize the rotation of the support tongue 7.

[0043] Specifically, such as Figure 4 As shown, the mounting base 4 includes a mounting plate 11 for fixed assembly on the frame and a horizontal plate 12 fixedly assembled with the mounting plate 11. The mounting plate 11 extends vertically, and the horizontal plate 12 extends horizontally. A linear drive member 5 is disposed on the mounting plate 11, a waist-shaped groove 9 is disposed on the horizontal plate 12, and multiple support tongues 7 are disposed on the front side of the horizontal plate 12. A reinforcing rib 13 is provided on the side of the horizontal plate 12 opposite to the linear drive member 5. The reinforcing rib 13 connects the mounting plate 11 and the horizontal plate 12 respectively to enhance the connection strength between the mounting plate 11 and the horizontal plate 12.

[0044] Specifically, the connector 6 includes a connecting block 10 and a plurality of connecting rods 8 hinged to the connecting block 10. The connecting block 10 is connected to the telescopic end of the linear drive 5. The plurality of connecting rods 8 are respectively hinged to the corresponding support tongue 7. The connecting block 10 has a connecting part 14, and one of the connecting rods 8 is hinged to the connecting part 14.

[0045] In this embodiment, the connecting rod 8 is a telescopic rod with an adjustable length, which can be changed as needed. The telescopic nature of the connecting rod 8 allows for adjustment of the telescopic distance of the linear drive component 5. When the opening angle of the cardboard box 1 is constant, extending the connecting rod 8 shortens the telescopic distance of the linear drive component 5; conversely, when the opening angle of the cardboard box 1 is constant, shortening the connecting rod 8 lengthens the telescopic distance of the linear drive component 5.

[0046] In other embodiments, the connecting rod 8 is non-retractable.

[0047] Specifically, such as Figure 6 As shown, the connecting rod 8 includes two connectors 15 and threaded rods 16 that are threadedly connected to the two connectors 15 respectively. The two connectors 15 are respectively hinged to the connecting block 10 and the corresponding support tongue 7. The threads of the two connectors 15 on the threaded rods 16 are in opposite directions, so the distance between the two connectors 15 can be adjusted by turning the threaded rods 16.

[0048] In this embodiment, the outer surface of the tongue 7 is a plane, which is used to contact the side page 3 of the paper box 1 to open the paper box 1.

[0049] like Figure 7 As shown, in this embodiment, there are two opening mechanisms 2, arranged facing each other at both ends of the opening of the cardboard box 1. Each end of the opening of the cardboard box 1 has a corresponding number of side panels 3. The frame of the opening mechanism 2 has a moving mechanism, on which the two opening mechanisms 2 are arranged. The moving mechanism can drive the two opening mechanisms 2 to move towards each other. When the side panels 3 of the cardboard box 1 need to be opened, the moving mechanism drives the two opening mechanisms 2 to approach the side panels 3 at both ends of the cardboard box 1 to open the side panels 3 at both ends. After opening, the moving mechanism drives the two opening mechanisms 2 away from the side panels 3 at both ends of the cardboard box 1.

[0050] The working process of this utility model is as follows:

[0051] The cardboard box 1 is transported to the opening device. After the cardboard box 1 reaches the set position, it is fixed to prevent it from moving during the opening process.

[0052] The moving mechanism drives the two support mechanisms 2 to move toward the side pages 3 at both ends of the paper box 1. During the overall movement of the support mechanisms 2, the linear drive 5 drives the connecting member 6 to move. Through the transmission of the connecting rod 8, multiple support tongues 7 gradually open to the set angle and contact the side pages 3. The linear drive 5 drives multiple support tongues 7 to move to the set position, thus completing the opening of the side pages 3 at both ends of the paper box 1.

[0053] After the opening is completed, the moving mechanism drives the two opening mechanisms 2 away from the paper box 1, thus completing the opening of the paper box 1. Then the opening device can drive the paper box 1, which has been opened, to leave.

[0054] Example 2

[0055] like Figure 8 As shown, the difference between this embodiment and embodiment 1 is that the connector 6 in this embodiment has a through hole 17, the mounting base 4 includes a mounting plate 11 and a horizontal plate 12, the horizontal plate 12 passes through the through hole 17, the linear drive 5 drives the connector 6 to slide on the horizontal plate 12, a plurality of support tongues 7 are hinged to the connector 6, and these support tongues 7 are also hinged to the front side of the horizontal plate 12.

Claims

1. A mouth-opening mechanism, which is mounted on the frame of a mouth-opening device and faces the cavity of a cardboard box, characterized in that, The support mechanism includes a mounting base for fixing it on the frame. The mounting base is provided with a linear drive that can extend and retract back and forth. A connecting member is fixedly mounted on the telescopic end of the linear drive. The linear drive drives the connecting member to move. The front side of the mounting base is hinged with multiple support tongues, and the hinge axes of the multiple support tongues are located in the same plane. The connector is hinged to the multiple support tongues, so that the linear drive drives the support tongues to rotate around the hinge axis. Each support tongue contacts the corresponding side page to open the cardboard box.

2. The support mechanism according to claim 1, characterized in that, The mounting base is provided with a waist-shaped groove, and the connector has a connecting part that passes through the waist-shaped groove. The linear drive drives the connecting part on the connector to move in the waist-shaped groove. One of the plurality of the support tongues is located on the side of the mounting base away from the linear drive member, and the support tongue is hinged to the connecting part.

3. The support mechanism according to claim 2, characterized in that, The mounting base includes a mounting plate for fixed assembly on the frame and a horizontal plate fixedly assembled with the mounting plate. The linear drive component is disposed on the mounting plate, the waist-shaped groove is disposed on the horizontal plate, and a plurality of the support tongues are disposed on the front side of the horizontal plate.

4. The support mechanism according to claim 3, characterized in that, The connector includes a connecting block and a plurality of connecting rods hinged to the connecting block. The connecting block is connected to the telescopic end of the linear drive. The plurality of connecting rods are respectively hinged to corresponding support tongues. The connecting block has a connecting part, and one of the connecting rods is hinged to the connecting part.

5. A splinting mechanism according to claim 4, characterized in that, The connecting rod is a telescopic rod with an adjustable length.

6. A splinting mechanism according to claim 5, characterized in that, The connecting rod includes two connectors and a threaded rod that is threadedly connected to the two connectors respectively. The two connectors are respectively hinged to a connecting block and a corresponding support tongue.

7. A splinting mechanism according to any one of claims 1-6, characterized in that, The outer surface of the tongue is a plane, which is used to contact the side of the cardboard box to open the cardboard box.

8. A splinting mechanism according to claim 1, characterized in that, The connector has a through hole, the mounting base passes through the through hole, and the linear drive drives the connector to slide on the mounting base.

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