A mechanism for automatically engaging a dovetail slot hinge

Abstract

This invention discloses an automatic fastening mechanism for dovetail hinges, which achieves mechanized fastening of dovetail hinges, improving production efficiency and packaging reliability. It includes: a crossbeam; a first servo motor; a pair of box-closing mechanisms, each including two side uprights with opposing rubber-coated rollers at the center of each upright; and a box-pulling mechanism including a first lifting cylinder, first left and right cylinders, and a rubber-coated pull rod. The first servo motor is fixed to one side of the upper part of the crossbeam, and a synchronous belt is disposed below the crossbeam. A synchronous driving wheel is sleeved on the lower output end of the first servo motor and connected to the synchronous belt through a synchronous driven wheel on the other side. The tops of the two uprights are respectively fixed to the synchronous belts on different sides via connecting blocks. The first servo motor drives the two uprights to move towards or away from each other.

Description

Technical Field

[0001] This invention relates to the technical field of cardboard packaging, specifically to an automatic fastening mechanism with dovetail hinges. Background Technology

[0002] To prevent mobile phones, tablets, and other electronic products from being bumped or crushed during transportation, they need to be packaged. High-end electronic products require packaging including both the product's own color box and corrugated cardboard packaging. Using corrugated cardboard for packaging is the most common form of packaging in the industry. Electronic products often use a combination of inner and outer cardboard boxes. To ensure the inner box is secure, a dovetail joint (see...) is usually added. Figure 6 This makes the inner box less likely to fall apart.

[0003] Currently, existing carton folding equipment can only fold flat, fixed inner cartons. Folding inner cartons with dovetail hinges is usually done manually, which leads to the following problems: 1. Production costs increase with rising labor costs; 2. Low production efficiency, as operator skill levels and short-term absences significantly impact efficiency. Furthermore, existing folding mechanisms cannot solve the problem of automatic snap-fitting of inner cartons with dovetail hinges. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides an automatic fastening mechanism for dovetail hinges, which enables mechanized fastening of dovetail hinges, improving production efficiency and packaging reliability.

[0005] A mechanism for automatically engaging dovetail hinges, characterized in that it comprises:

[0006] beam;

[0007] First servo motor;

[0008] A pair of box-closing mechanisms, each comprising two upright plates, with rubber-coated rollers facing each other at the center of each upright plate;

[0009] And a box-pulling mechanism, which includes a first lifting cylinder, a first left and right cylinder, and a rubber-coated pull rod;

[0010] A first servo motor is fixed on one side of the upper part of the crossbeam, and a synchronous belt is provided below the crossbeam. A synchronous driving wheel is sleeved on the lower output end of the first servo motor and connected to the synchronous belt through a synchronous driven wheel on the other side. The tops of the two vertical plates are respectively fixed to the synchronous belts on different sides through connecting blocks. The first servo motor drives the two vertical plates to move towards each other or away from each other.

[0011] The inner end faces of the two uprights are arranged facing each other, and two sets of rubber-coated rollers located on different uprights are arranged facing each other. One set of rubber-coated rollers is used to press the paper edge corresponding to the female head of the hinge, and the other set of rubber-coated rollers is used to press the paper edge corresponding to the male head of the hinge.

[0012] The two sets of upright plates are connected to the box-pulling mechanism through the first mounting bracket. Driven by the first lifting cylinder and the first left and right cylinders, the box-pulling mechanism causes the lower convex rubber head of the rubber-coated pull rod to penetrate into the center line of the hinge, and then pulls the female and male hinge heads outward by a certain distance, thereby preventing the male and female hinge heads from crossing and overlapping.

[0013] Its further features are:

[0014] It also includes a set of pressure box mechanism, which includes a second lifting cylinder, a second left and right cylinder, and a pressure head;

[0015] One of the upright plates is connected to the pressing mechanism via a second mounting bracket. The pressing head of the pressing mechanism presses down on the male and female hinge heads under the drive of the second lifting cylinder and the second left and right cylinders to complete reliable assembly.

[0016] The pressing mechanism includes two sets of pressing heads, which are respectively positioned at the front and rear to ensure stable and reliable pressing.

[0017] It also includes a positioning mechanism. Each upright plate has a front and rear moving cylinder on both sides of the middle of its height direction. The outer output end of each set of front and rear moving cylinders is fixed with a positioning pressure plate. The positioning pressure plate is used to reliably position the front and rear space of the box to ensure that the box is stable and reliable.

[0018] It also includes a fixed crossbeam frame, with lower convex plates on both sides of the crossbeam pivotally connected to the lower convex mounting rods of the crossbeam frame via rotating shafts. A second servo motor is fixed to the upper part of one of the lower convex mounting rods, and a rotating drive wheel is sleeved on the output end of the second servo motor. A rotating driven wheel is provided on the corresponding lower convex plate. A transmission belt connects the rotating drive wheel and the rotating driven wheel, which allows the entire crossbeam and the corresponding box closing mechanism, box pulling mechanism, box pressing mechanism and positioning mechanism to be adjusted in rotation angle as a whole, ensuring that the entire mechanism can be stably adjusted when the bottom box is not level.

[0019] After adopting this invention, the box without hinge flipping is placed between two sets of upright plates. Then, the two upright plates of the box closing mechanism move through the first servo motor, causing them to move towards each other. The upright plates are equipped with rubber-coated rollers. As the distance between the two upright plates 24 decreases, one set of rubber-coated rollers first contacts the female hinge head on the inner carton, folding the female head first. Then, the other set of rubber-coated rollers contacts the male hinge head on the inner carton, pressing the male hinge head into the female hinge head of the upper hinge, completing the fastening action. Afterward, the first lifting cylinder and the first left and right cylinders of the box pulling mechanism are activated, causing the lower convex rubber-coated head of the rubber-coated pull rod to penetrate into the center line of the hinge, and then pulling the female and male hinge heads outward a certain distance, thereby preventing the male and female hinge heads from crossing and overlapping, and making them fasten better. This achieves mechanized fastening of dovetail hinges, improving production efficiency and packaging reliability. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention. Figure 1 ;

[0021] Figure 2 This is a three-dimensional structural diagram of the present invention. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the main view structure of the present invention;

[0023] Figure 4 This is a bottom view structural diagram of the present invention;

[0024] Figure 5 This is a perspective view of the box-pulling mechanism of the present invention;

[0025] Figure 6 This is a schematic diagram of the male and female hinges for the inner cardboard box;

[0026] The names corresponding to the serial numbers in the diagram are as follows:

[0027] Crossbeam 10, synchronous belt 11, lower convex plate 12, guide rail 13, first servo motor 20, synchronous driving wheel 21, synchronous driven wheel 22, box closing mechanism 30, upright plate 31, rubber-coated roller 32, connecting block 33, box pulling mechanism 40, first lifting cylinder 41, first left and right cylinder 42, rubber-coated pull rod 43, lower convex rubber-coated head 431, box pressing mechanism 50, second lifting cylinder 51, second left and right cylinder 52, pressing head 53, positioning mechanism 60, positioning pressure plate 61, front and rear moving cylinder 62, first mounting bracket 70, second mounting bracket 80, fixed crossbeam frame 90, lower convex mounting rod 91, second servo motor 100, transmission belt 110. Detailed Implementation

[0028] A mechanism for automatically engaging dovetail hinges, see Figures 1-5 It includes a crossbeam 10, a first servo motor 20, a pair of box closing mechanisms 30, a box pulling mechanism 40, a set of box pressing mechanisms 50, and a positioning mechanism 60;

[0029] The box closing mechanism 30 includes two side uprights 31. Each upright 31 has a set of rubber-coated rollers 32 facing each other at the middle position. Each set of rubber-coated rollers includes two parallel rubber-coated rollers 32.

[0030] The luggage pulling mechanism 40 includes a first lifting cylinder 41, a first left and right cylinder 42, and a rubber-coated pull rod 43;

[0031] The pressing mechanism 50 includes a second lifting cylinder 51, a second left and right cylinder 52, and two sets of pressing heads 53;

[0032] A first servo motor 20 is fixedly mounted on one side of the upper part of the crossbeam 10. A synchronous belt 11 is provided below the crossbeam 10. A synchronous driving wheel 21 is sleeved on the lower output end of the first servo motor 20 and connected to the synchronous belt 11 through a synchronous driven wheel 22 on the other side. The tops of the two upright plates 31 are respectively fixed to the synchronous belts 11 on different sides through connecting blocks 33. The first servo motor 20 drives the two upright plates 31 to move towards or away from each other.

[0033] The inner end faces of the two upright plates 31 are arranged facing each other, and the two sets of rubber-coated rollers 32 located on different upright plates are arranged facing each other. One set of rubber-coated rollers 32 is used to press the paper edge corresponding to the female head of the hinge, and the other set of rubber-coated rollers 32 is used to press the paper edge corresponding to the male head of the hinge.

[0034] Two upright plates 31 are respectively connected to the box-pulling mechanism 40 through the first mounting bracket 70. The first lifting cylinder 41 is fixedly mounted on the outer side of the first mounting bracket 70. The lower output end of the first lifting cylinder 41 is connected to the first left and right cylinders 42. The inner output end of the first left and right cylinders 42 is fixedly connected to the rubber-coated pull rod 43. The inner end of the rubber-coated pull rod 43 is provided with a downwardly protruding rubber-coated head 431. Under the drive of the first lifting cylinder 41 and the first left and right cylinders 42, the box-pulling mechanism 40 causes the downwardly protruding rubber-coated head 431 of the rubber-coated pull rod 43 to penetrate into the center line of the hinge, and then pulls the female or male hinge head outward by a certain distance, thereby preventing the male and female hinge heads from crossing and overlapping.

[0035] One of the upright plates 32 is connected to the pressing mechanism 50 via a second mounting bracket 80. The pressing head 53 of the pressing mechanism 50 presses down on the male and female hinge heads under the drive of the second lifting cylinder 51 and the second left and right cylinders 52 to complete reliable assembly. The second left and right cylinders 52 are fixedly mounted on the upper surface of the second mounting bracket 80. The inner output end of the second left and right cylinders 52 is fixedly connected to the second lifting cylinder 51. The lower output end of the second lifting cylinder 51 is connected to the pressing heads 53 at both ends via a connecting bracket 54. The two sets of pressing heads are respectively set in the front and rear positions to ensure stable and reliable pressing.

[0036] The positioning mechanism 60 includes four positioning pressure plates 61. Each upright plate 32 has a front and rear moving cylinder 62 on both sides of the middle part in the height direction. The outer output end of each set of front and rear moving cylinders 62 is fixed with a positioning pressure plate 61. The positioning pressure plate 61 is used to reliably position the front and rear space of the box to ensure the stability and reliability of the box.

[0037] In specific implementation, it also includes a fixed crossbeam frame 90. The lower convex plates 12 on both sides of the crossbeam 10 are pivotally connected to the lower convex mounting rods 91 of the crossbeam frame 90 via rotating shafts. A second servo motor 100 is fixed on the upper part of the lower convex mounting rod 91. The output end of the second servo motor 100 is fitted with a rotating drive wheel. The lower convex plate at the corresponding position is provided with a rotating driven wheel. The transmission belt 110 connects the rotating drive wheel and the rotating driven wheel, which allows the entire crossbeam 10 and the corresponding box closing mechanism 30, box pulling mechanism 40, box pressing mechanism 50 and positioning mechanism 60 to be adjusted in rotation angle as a whole, ensuring that the entire mechanism can be stably adjusted when the bottom box is not horizontal.

[0038] The top of the upright plate 31 is also fitted with guide rails 13 on both sides of the bottom of the crossbeam 10 to ensure that the vertical plate 31 moves stably and reliably.

[0039] Its working principle is as follows: The box without hinge flipping is placed between two sets of upright plates. First, the position of the box is fixed by the positioning mechanism. Then, the two upright plates of the box closing mechanism move in opposite directions through the first servo motor. The upright plates are equipped with rubber-coated rollers. As the distance between the two upright plates 24 decreases, one set of rubber-coated rollers first contacts the female head of the hinge on the inner carton and folds the female head. Then, the other set of rubber-coated rollers contacts the male head of the hinge on the inner carton, so that the male head of the hinge on the inner carton presses into the female head of the upper hinge, completing the fastening action. After that, the first lifting cylinder and the first left and right cylinder of the box pulling mechanism are activated, so that the lower convex rubber-coated head of the rubber-coated pull rod penetrates into the center line of the hinge. Then, the female head and the male head of the hinge are pulled outward by a certain distance, thereby preventing the male head and the female head of the hinge from crossing and overlapping, so that they are better fastened. Finally, the pressing head of the box pressing mechanism presses the female head and the male head of the hinge together.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A mechanism for automatically engaging dovetail hinges, characterized in that, It includes: beam; First servo motor; A pair of box-closing mechanisms, each comprising two upright plates, with rubber-coated rollers facing each other at the center of each upright plate; And a box-pulling mechanism, which includes a first lifting cylinder, a first left and right cylinder, and a rubber-coated pull rod; A first servo motor is fixed on one side of the upper part of the crossbeam, and a synchronous belt is provided below the crossbeam. A synchronous driving wheel is sleeved on the lower output end of the first servo motor and connected to the synchronous belt through a synchronous driven wheel on the other side. The tops of the two vertical plates are respectively fixed to the synchronous belts on different sides through connecting blocks. The first servo motor drives the two vertical plates to move towards each other or away from each other. The inner end faces of the two uprights are arranged facing each other, and two sets of rubber-coated rollers located on different uprights are arranged facing each other. One set of rubber-coated rollers is used to press the paper edge corresponding to the female head of the hinge, and the other set of rubber-coated rollers is used to press the paper edge corresponding to the male head of the hinge. The two sets of upright plates are connected to the box-pulling mechanism via the first mounting bracket. The first lifting cylinder is fixed to the outer side of the first mounting bracket. The lower output end of the first lifting cylinder is connected to the first left and right cylinders. The inner output end of the first left and right cylinders is fixed to the rubber-coated pull rod. The inner end of the rubber-coated pull rod is provided with a downwardly protruding rubber head. Under the drive of the first lifting cylinder and the first left and right cylinders, the box-pulling mechanism causes the downwardly protruding rubber head of the rubber-coated pull rod to penetrate into the center line of the hinge, and then pulls the female or male hinge head outward by a certain distance, thereby preventing the male and female hinge heads from crossing and overlapping. It also includes a set of pressure box mechanism, which includes a second lifting cylinder, a second left and right cylinder, and a pressure head; One of the upright plates is connected to the pressing mechanism via a second mounting bracket. The pressing head of the pressing mechanism presses down on the male and female hinge heads under the drive of the second lifting cylinder and the second left and right cylinders to complete reliable assembly.

2. The mechanism for automatically engaging dovetail hinges according to claim 1, characterized in that: The pressing mechanism includes two sets of pressing heads, which are respectively located at the front and rear positions.

3. The mechanism for automatically engaging dovetail hinges according to claim 1, characterized in that: It also includes a positioning mechanism, with a front and rear moving cylinder installed on both sides of the middle of the height direction of each upright plate, and a positioning pressure plate fixed at the outer output end of each set of front and rear moving cylinders.

4. The mechanism for automatically engaging dovetail hinges according to claim 1, characterized in that: It also includes a fixed crossbeam frame, and the lower convex plates on both sides of the crossbeam are pivotally connected to the lower convex mounting rods of the crossbeam frame via rotating shafts. A second servo motor is fixed on the upper part of one of the lower convex mounting rods, and a rotating drive wheel is sleeved on the output end of the second servo motor. A rotating driven wheel is provided on the lower convex plate at the corresponding position, and a transmission belt connects the rotating drive wheel and the rotating driven wheel.

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