Automatic rectangular box sleeving machine and sleeving method

Abstract

The application discloses a kind of rectangular box automatic sleeve machine and sleeve method, and the quick unfolding of leather cover is realized by mechanical automation structure, positioning transportation and accurate sleeve, to meet the automation needs of rectangular box outer packaging.The equipment modular design mainly contains rack part, leather cover opening mechanism, horizontal frame, leather cover sleeve mechanism and installation mobile frame etc..Method is: first, the leather cover is opened by opening mechanism;Then horizontal frame moves to specified sleeve position;Box body is pushed into predetermined position again;Finally, drive sleeve mechanism to descend, and the unfolded leather cover is sleeved into box body.Motion execution mechanism is driven by mechanical engagement, pneumatic or vacuum suction etc..The machine realizes whole automatic process control, and also sets up quick change module, realizes the quick processing of different specifications box and leather cover, and takes into account versatility.Overall, the equipment effectively integrates accurate execution mechanism and quick response module, and can efficiently and automatically meet the needs of small batch production of rectangular box.

Description

Technical Field

[0001] This invention belongs to the technical field of mechanical automation and intelligent manufacturing devices, specifically relating to an automatic assembly machine for rectangular boxes and its control method. This device achieves automatic unfolding, precise positioning, and assembly of the covers through a modular structure, enabling automation of small-batch production of rectangular boxes. It has advantages such as strong versatility and easy, rapid changeover.

[0002] The main technical problem to be solved is: to design a versatile and easily interchangeable automatic rectangular box assembly machine to realize the entire automated process from flat leather sleeves to box assembly, meet the needs of flexible production and multi-variety small-batch production, and improve capacity and efficiency. Background Technology

[0003] Rectangular boxes are widely used in sports, medical, and other fields to enhance the safety and comfort of products during use. To ensure safety and comfort, a layer of sponge or other cushioning material is usually placed on the outer surface of the rectangular box. Currently, this placement process is mainly carried out manually, but manual operation is inefficient and cannot be automated.

[0004] Existing box-packing equipment is mainly suitable for simple packing of cylindrical or specific geometric shapes, and it is difficult to meet the automation needs of multi-variety, small-batch production of rectangular boxes. Such equipment is usually custom-made, with high equipment costs, complex changeover, and a lack of versatility.

[0005] Therefore, there is an urgent need for a versatile automatic rectangular box assembly machine that can quickly unfold, accurately position, and assemble the leather sleeves, automating the small-batch production of rectangular boxes and improving capacity and efficiency. This machine also needs a modular design for easy changeover, reducing user investment and expanding its applicability.

[0006] Overall, existing technologies cannot effectively solve the key difficulties in the automatic assembly process of rectangular boxes, nor can they simultaneously meet the combined requirements of versatility and rapid changeover. This inspired the design and implementation of this invention. Summary of the Invention

[0007] To address the aforementioned problems, this invention provides a fully automatic leather fitting device for Pilates core bed boxes. By incorporating an automatic leather supply mechanism, an opening mechanism, a spreading mechanism, a moving mechanism, a fitting mechanism, and a box conveying mechanism, the entire box-making process, from unfolding the leather to fitting it into the wooden box, is automated.

[0008] The objective of this invention is achieved through the following technical solution: an automatic rectangular box assembly machine, comprising: a frame part and a mechanism part, wherein the frame part includes: a supporting frame and a mounting frame, and the mechanism part includes: a leather sleeve opening mechanism, a horizontal moving frame, a leather sleeve assembly mechanism, and a mounting moving frame; the leather sleeve opening mechanism is used to open the leather sleeve into a three-dimensional unfolded state; the horizontal moving frame can drive the leather sleeve opening mechanism to move horizontally; the leather sleeve assembly mechanism can move the unfolded leather sleeve vertically and assemble it onto the box; the mounting moving frame assembles the leather sleeve assembly mechanism and drives its vertical movement.

[0009] Preferably, the holster opening mechanism includes: symmetrically arranged support rods on both sides and their rotation mechanism, the rotation of which can open or close the four corners of the holster; a transmission mechanism for driving the rotation of the support rods; and an installation structure for fixing or driving the holster opening mechanism. The beneficial effect is that it enables the holster to automatically unfold from a flat surface to a three-dimensional shape, preparing it for subsequent fitting work, thus achieving automation.

[0010] Preferably, the transverse frame includes: an actuator for driving its horizontal movement; and a drive mechanism for driving the actuator. The advantage is that the holstering unfolding mechanism can be moved smoothly, accurately delivering the unfolded holster to the designated fitting position, thus automating transportation and positioning.

[0011] Preferably, the case fitting mechanism includes: a lifting actuator for guiding the movement of the case; and a drive mechanism for raising and lowering the lifting actuator. The advantage is that it can precisely drive the case down and fit onto the box, thus automating the fitting process.

[0012] Preferably, a quick-change module is also included. This module enables rapid switching of key components and control logic through standardized interfaces, automatic identification, and parameterized control, accommodating the automated assembly of boxes and cases of different specifications. The beneficial effect is that the rapid switching of key components and control logic via standardized interfaces and automatic identification enables the automated assembly of boxes and cases of different specifications, improving versatility.

[0013] Preferably, the rotation mechanism of the strut includes: two symmetrically arranged strut arms, one end of each strut being fixed to the distal end of the strut arm and the other end being free; two movable guide rods, one end of each guide rod being fixed to the proximal end of the strut arm; a riding frame on which the guide rods are mounted, the riding frame driving the guide rods to rotate via a transmission mechanism to drive the strut to swing; and a fixed beam fixing the riding frame, the rotation of which drives the leather sleeve opening mechanism to rotate around a vertical axis. The beneficial effect is that the opening and closing movement of the strut can be controlled, driving the contraction and expansion of the leather sleeve, achieving precise control over the shape changes of the leather sleeve.

[0014] Preferably, the actuator of the transverse frame includes: a gear set; a rack set; a sliding block and a movable block connected by a sliding connection, wherein the gear set or rack set is fixed on the sliding block; and a threaded transmission mechanism that drives the movable block and the sliding block to move horizontally, wherein the gear set drives the fixed beam to rotate through the rotation of the gear shaft.

[0015] Preferably, the lifting actuator includes: two vertically arranged lifting units, which achieve lifting via vertically arranged lifting rails and side supports installed at the lower end; the side supports are provided with inwardly rotating pressing blocks at both ends and suction cups at the upper part; the pressing blocks are flipped and closed by air supply through a pneumatic interface; the suction cups are adsorbed by negative pressure supplied through a vacuum suction cup interface.

[0016] The present invention also provides an automatic assembly method for a rectangular box, comprising the following steps: A) using a sleeve-opening mechanism to open the sleeve from a planar shape into a three-dimensional unfolded state; B) using a horizontal moving frame to move the sleeve-opening mechanism in the horizontal direction to move the unfolded sleeve to a predetermined position; C) pushing the box upward to place it in the predetermined position opposite the sleeve; D) activating the sleeve assembly mechanism to drive it downward, thereby fitting the unfolded sleeve into the box to achieve assembly.

[0017] Preferably, in step A), the leather sleeve opening mechanism opens the four corners of the leather sleeve by rotating the telescopic support rod; in step B), the horizontal moving frame moves horizontally by gear and rack meshing and sliding; in step D), the leather sleeve fitting mechanism drives the side support to descend, and the inner side of the side support is also provided with a pressing and adsorption mechanism.

[0018] As a preferred option, it also includes: utilizing standardized quick-change modules to enable rapid switching of the main components and control logic of the equipment to adapt to automated kits of different sizes of boxes and cases.

[0019] Preferably, the opening and closing movement of the strut in the sheath spreading mechanism can control the switching between the sheath retracting and unfolding.

[0020] Preferably, the side support can make slight up-and-down movements during descent to search for the optimal engagement position. This improves the matching accuracy between the case and box during assembly, resulting in a more precise and reliable assembly.

[0021] In summary, the present invention has the following advantages compared with the prior art:

[0022] 1. It realizes the entire automated process from flat leather case to three-dimensional unfolding, positioning and transportation, and precise fitting onto a rectangular box, greatly improving the fitting efficiency.

[0023] 2. Its modular structural design and quick-change mechanism enable it to handle leather cases and boxes of different specifications and materials, giving it strong versatility and adaptability.

[0024] 3. Equipped with a precise opening mechanism for controlling the shape changes of the leather case, a transverse frame for precise positioning and transportation, and a high-precision assembly lifting mechanism, the entire line is automated and the quality is controllable.

[0025] 4. The kit is driven and assisted by pneumatic and vacuum adsorption methods, and is equipped with refined functions such as searching for the optimal bite position, resulting in higher kit quality.

[0026] 5. Modular design and digital control enable rapid changeover and adjustment, reducing equipment investment costs. It meets the automation needs of small-batch and multi-variety production.

[0027] In this way, the present invention integrates multiple automated mechanisms and control methods, which not only meet the requirements of accuracy and quality, but also take into account comprehensive indicators such as versatility and rapid response capability, and can significantly improve the automation level of the rectangular box kit. Attached Figure Description

[0028] Figure 1 This is a structural diagram of the box from a first-person perspective;

[0029] Figure 2 This is a schematic diagram of the box from a second-person perspective.

[0030] Figure 3 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 4 This is a structural diagram of the rack section;

[0032] Figure 5 This is a structural schematic diagram of the present invention from another angle;

[0033] Figure 6 This is a structural diagram of the leather sleeve opening mechanism and the transverse moving frame;

[0034] Figure 7 This is a structural diagram of the leather case assembly and the mounting frame;

[0035] Figure 8 This is a schematic diagram of the structure of the sheath-opening mechanism.

[0036] Figure 9 This is a structural diagram showing the handover of the leather case from the leather case opening mechanism.

[0037] Figure 10 This is a schematic diagram of the leather case assembly mechanism where the side support clamps the edge of the leather case, and the entire leather case is in a position where it is handed over from the leather case opening mechanism.

[0038] Figure 11 This is another angle showing the details of the holstering extension mechanism, the transverse frame, and the holstering assembly mechanism;

[0039] Figure 12 It shows the structure of components such as side supports and pressure blocks.

[0040] Marked in the image:

[0041] Support frame 10, mounting bracket 20, box 01, leather sleeve 011, wooden box 012, second motor 022, third motor 023, second cylinder 032, leather sleeve opening mechanism 14, support rod 141, support rod arm 142, guide rod 143, saddle frame 144, semi-circular tooth surface C1, fixed beam 145, conical gear tooth 146, beam plate 147, lead screw shaft 148, transverse frame 15, gear 151, gear shaft 152, rack 1 53. Gear seat 154. Slide seat 155. Moving block 156. Threaded shaft 157. Horizontal moving beam 158. Leather sleeve assembly mechanism 16. Lifting rail 161. Side support 162. Pressure block 163. Pneumatic interface 164. Suction cup 165. Lifting rail seat 166. Gear set 167. Mounting moving frame 17. Rack 171. Box body 172. Top plate 173. Mounting plate 174. Guide column 175. Slider 177. Slide rail 178. Detailed Implementation

[0042] The following is a combination of all the appendices Figures 1-12 The illustrated embodiments further illustrate the present invention:

[0043] Example 1

[0044] Appendix Figures 1-2 The image shows box 01, which is part of the Pilates core bed. Its main body is a hexagonal wooden box 012. To enhance user comfort and safety during training, the outer surface of this wooden box is covered with a layer of sponge. To protect this sponge, it is further wrapped in a leather cover 011.

[0045] like Figure 3 -4 represents an automatic rectangular box assembly machine, which can automatically assemble the aforementioned hexahedral wooden box 012 into a protective leather sleeve 011, thereby achieving automated packaging of the wooden box. Furthermore, considering the basic process flow and functional modules implemented by this equipment, it can also be applied to the automated assembly of other rectangular boxes with similar structures and sizes, such as the hexahedral leather sleeve protection devices used in sports, medical, and other related equipment, requiring only minor parameter adjustments.

[0046] Meanwhile, regarding the material of the leather case, this automatic packaging machine is also compatible with various soft protective case materials with good elasticity, such as EVA foam, polyurethane foam, rubber, and various plastic products. As long as the size of the leather case basically matches the wooden box and the material can withstand the unfolding, positioning, and packaging movements of the mechanism, automated production can be achieved.

[0047] Through modular and parametric design, this automatic rectangular box packing machine has strong versatility, enabling it to serve small-batch, multi-variety automated packing production, reducing equipment investment costs and improving production efficiency. It consists of a frame and a mechanism.

[0048] The frame consists of two parts: the lower support frame 10 forms the basic framework of the entire equipment, ensuring overall stability; the upper mounting frame 20 is used to install various mechanical components.

[0049] The mechanism contains key components that enable automated assembly:

[0050] The leather case unfolding mechanism 14 is used to mechanically unfold the flat leather case into a three-dimensional unfolded state;

[0051] The horizontal shifting frame 15 can drive the leather sleeve unfolding mechanism 14 to move horizontally and change its orientation, accurately moving the unfolded leather sleeve to the designated position;

[0052] The leather case fitting mechanism 16 allows the unfolded leather case to move vertically and fit onto the wooden box;

[0053] Install the movable frame 17, install and drive the leather case fitting mechanism 16 to move vertically to complete the fitting.

[0054] The workflow is:

[0055] 1. First, the leather case unfolding mechanism 14 is used to unfold the four corners of the leather case using mechanical struts, transforming it from its initial planar shape into a three-dimensional unfolded state. At the same time, the leather case is flipped to stand vertically from the horizontal plane.

[0056] 2. Then, the horizontal moving frame 15 horizontally moves the unfolding mechanism 14, bringing the unfolded leather case and support rod together to the predetermined fitting position, placing the leather case directly below the leather case fitting mechanism 16;

[0057] 3. At the same time, the wooden box has been positioned and placed directly below the assembly mechanism 16;

[0058] 4. Finally, the fitting mechanism 16 descends precisely to cover the wooden box with the unfolded leather sleeve, while the sleeve is secured by devices such as pressure blocks and suction cups, thus completing the automated fitting process.

[0059] The sling opening mechanism 14 is the key device for automatically opening the four corners of the sling. Typically, the sling is fed in by a conveyor belt or vertical conveyor. After the operator opens the sling on one side, the sling opening mechanism 14 immediately moves in to open the four corners. (Refer to...) Figure 3 The specific structure of the leather sheath opening mechanism 14 is as follows: Figure 6 As shown, the device includes two support rods 141 on each side and support arms 142, guide rods 143 for fixing the support arms 142, a frame 144 for rotating the support arms 142, a fixing beam 145 for mounting the frame 144, a bevel gear 146 for driving the frame 144, a beam plate 147 for fixing the two guide rods 143, a lead screw shaft 148 for driving the extension and retraction of the guide rods 143, and a second motor 022 for driving the lead screw shaft 148. One end of the support rod 141 is fixed to the outer end of the support arm 142, and the inner ends of the two support arms 142 are respectively fixed to the two guide rods 143. The guide rod 143 is a long... The cylindrical rod of the keyway is fixed at one end to the support arm 142 and at the other end to both ends of the beam plate 147. The middle section is movably installed in the corresponding shaft hole of the frame 144 through a key fit. The frame 144 is rotatably installed on the fixed beam 145 with the guide rod 143 as the mounting axis. On one of the upper and lower surfaces, a semi-circular tooth surface C1 is machined with the center of the mounting shaft hole as the center. The semi-circular tooth surface C1 meshes with the bevel gear tooth 146. In some embodiments, the semi-circular tooth surface C1 is provided on both the upper and lower surfaces to meet the separate meshing of the upper and lower frames 144, increase the meshing surface, and improve the fit stability. The rotation of the riding frame 144 causes the guide rod 143 to rotate, which in turn causes the support arm 142 to swing. The swinging of the support arm 142 causes the support rod 141 to flip. The two parallel support rods 141 flip towards each other. When they are close together, they are folded up; when they are far apart, they are spread out (when spread out, they correspond to the four corners of the leather cover being spread up). The forward and backward extension of the support rod 141 is driven by the lead screw shaft 148, which is driven by the second motor 022. The rotating lead screw shaft 148 pushes the support rod 141 to move back and forth via the beam plate 147 and the guide rod 143. The fixed beam 145 is fixed to the gear shaft 152 of the transverse frame 15. The conical gear tooth 146 is fixed non-rotatably on the gear seat 154 of the transverse frame 15. The conical gear tooth 146 is set in two halves, and each half of the tooth surface meshes with the corresponding half of the circular tooth surface C1 of the riding frame 144. The purpose of setting it in two halves is to adapt to the direction of the teeth. The leather sleeve spreading mechanism causes the riding frame to mesh with the conical gear 146 through the rotation of the fixed beam. The riding frame drives the support rod 141 to rotate. The forward and reverse rotation of the fixed beam allows the support rod 141 to switch between retracting and unfolding.

[0060] The motion actuator of the transverse frame 15 contains key components for realizing mechanical motion and force transmission:

[0061] 1. Gear 151 and gear shaft 152: Gear transmission assembly for outputting power;

[0062] 2. Rack 153 and gear seat 154: A rack assembly that meshes with gear 151 to achieve linear motion;

[0063] 3. Slide 155 and movable block 156: sliding connection, a sliding component capable of driving the upper mechanism to move;

[0064] 4. Threaded shaft 157 and transverse beam 158: The threaded shaft drives the slider to move horizontally.

[0065] These components are connected together through different mechanical force transmission principles, forming a mechanical transmission chain:

[0066] The motor drives the threaded shaft 157 to rotate → the threaded shaft drives the slide 155 to move horizontally through the moving block 156 → the gear seat 154 installed on the slide drives the gear 151 to rotate under the guidance of the rack 153 → the gear drives the entire leather sleeve opening mechanism 14 to move horizontally and rotate vertically through the shaft 152.

[0067] In this way, the actuator ultimately achieves the composite lateral movement of the sleeve opening mechanism on the transverse frame through mechanical motion methods such as meshing, threaded transmission, and sliding.

[0068] The drive mechanism includes a third motor 023 and its transmission, which drives the entire mechanism: motor 023 drives the threaded shaft 157 to rotate → the threaded shaft 157 drives the moving block 156 and the slide 155 to move → the slide drives the gear and rack to move → realizing the lateral displacement of the sleeve opening mechanism.

[0069] Compared to manual operation, this transverse frame, combined with automatic control, can quickly and continuously move and position the sleeve spreading mechanism in the horizontal direction, providing accurate component supply for subsequent assembly processes. It works seamlessly with the sleeve spreading mechanism and other mechanisms, forming a crucial component in achieving automated production.

[0070] Meanwhile, the gear seat 154 mounted on the slide 155 meshes with the fixed rack 153, forcing the gear 151 to rotate during movement. The gear 151 transmits motion through the gear shaft 152 and drives the coaxial fixed beam 145 to rotate, causing the entire sleeve spreading mechanism 14 to rotate around the vertical axis. In this way, vertical rotation of the posture is achieved while moving laterally.

[0071] Ultimately, the holstering unfolding mechanism can achieve a combination of lateral movement and vertical flipping on the transverse frame. This mechanism ensures that the holstering accurately reaches the designated assembly position and is adjusted to a vertically lowered state, seamlessly connecting with subsequent assembly stations and providing hardware support for automated production processes.

[0072] The leather case fitting mechanism 16 is the core component for achieving automatic leather case fitting. Its structure includes a precise lifting actuator and a drive mechanism for driving the lifting. A schematic diagram of its structure is shown below. Figures 7-10 As shown.

[0073] The mechanism mainly consists of a lifting actuator and a drive mechanism. The lifting actuator includes a vertically arranged lifting rail 161, a side support 162 with an open lower end, a pressing block 163 inside the side support, and a suction cup 165. The wooden box is placed under the side support. The pressing block applies pressure to fix the edge of the leather sleeve. The side support descends, causing the leather sleeve to move down and fit over the wooden box. Then, the suction cup stabilizes and positions the leather sleeve, completing the fitting process.

[0074] The leather suit mechanism 16 consists of a rectangular frame structure formed by four sets of mutually perpendicular lifting units. Each lifting unit includes:

[0075] 1. Lifting rail 161: The main track structure guiding the precise vertical movement of the side support;

[0076] 2. Side support 162: A frame with an open lower end, directly acting on the leather sleeve to lower it. Pneumatic pressure blocks 163 are installed on both the front and rear side supports;

[0077] 3. Pneumatic interface 164: Provides air supply to the pressure block, causing the pressure block to flip and press the edge of the sleeve;

[0078] 4. Lifting rail seat 166: The fixed support for the entire lifting structure, bearing the full weight.

[0079] The workflow is:

[0080] 1.4 sets of lifting units form a rectangular frame, with the wooden box placed in the center;

[0081] 2. Lower the side support and precisely slip it onto the upper edge of the leather sleeve; rotate the pressure block inward to apply pressure and tighten it.

[0082] 3. The side support moves the leather sleeve further down, completely securing the wooden box;

[0083] 4. The suction cups lift up and securely fasten the assembled wooden box and leather case.

[0084] Through modular design and the use of standard moving parts, this mechanism achieves precise control over the automatic fitting of the leather sleeve onto the wooden box. The key steps in the workflow are: the lifting mechanism drives the side support to descend, and just before contacting the upper edge of the leather sleeve, the side support moves slightly up and down to search for the optimal engagement position, and then continues to move down to stably place the upper edge of the leather sleeve into the side support; when the upper edge of the leather sleeve is fully embedded in the side support, the side support around it forms a rectangular frame, which completely covers the upper opening of the leather sleeve, precisely fitting it onto the wooden box; at the same time, the pneumatic pressure blocks at both ends flip inward under the action of the air source and press inward to firmly press the edge of the leather sleeve; finally, the suction cups and the threaded attachment rise, stably fixing the fitted leather sleeve and the wooden box together.

[0085] The precise up-and-down movement of the side support ensures accurate positioning and complete insertion of the leather case; the cooperation of the pressure block and suction cups reliably fastens the case, preventing loosening. This structure optimizes the stability and accuracy of the fitting process, achieving automatic and precise control.

[0086] In terms of drive, a gear set 167 is provided at the lower end of the lifting rail 161, which achieves precise control of vertical movement by meshing with the rack 171 on the side of the mounting frame 17. In addition, the pneumatic interface 164 and the vacuum suction cup interface 165 provide air source and negative pressure to the pressure block and suction cup respectively, driving them to complete the automated work of pressing and positioning the sleeve.

[0087] In this way, the device integrates three automated drive methods: mechanical transmission, pneumatic control, and vacuum adsorption. It also works with three actuators: side support, pressure block, and suction cup, forming a coordinated and complementary automatic fitting module that can accurately fit and stably fasten the leather case.

[0088] Compared to previous manual operations, this structure achieves automated driving and precise control of the entire kitting process. It works seamlessly with other modules such as conveyor belts and palletizing output, enabling the entire leather kitting production line to meet the requirements of automated production, significantly improving output and efficiency.

[0089] The mounting frame 17 consists of an actuator and a drive mechanism. The actuator includes:

[0090] 1) Rack 171: Connected to the cylinder piston rod, guiding the motion;

[0091] 2) Box body 172 and top plate 173: the main frame supporting the leather sleeve assembly mechanism 16;

[0092] 3) Mounting plate 174: Connects the cylinder and supports the housing;

[0093] 4) Guide post 175, slider 177, and slide rail 178: guide sliding to make the frame move stably.

[0094] The drive mechanism includes a second cylinder 032 and an external air source, enabling automatic and precise control.

[0095] 1) The second cylinder 032 is fixed on the frame, and the piston rod is hinged to the mounting plate 174 at the front end;

[0096] 2) The cylinder's extension and retraction drive the slider 177 and the sprocket to reciprocate horizontally on the slide rail 178;

[0097] 3) At the same time, the rack 171 drives the entire frame to move vertically.

[0098] In this way, the pneumatic drive mechanism drives the moving frame to complete the fixed-point supply and precise positioning of the leather sleeve assembly mechanism.

[0099] Referring to all the attached images, the assembly process is as follows:

[0100] 1. The operator aligns the leather sleeve material with the support rod in the correct sleeve opening direction. As the leather sleeve opening mechanism 14 moves, the four corners of the leather sleeve are opened to form a three-dimensional box and then flipped up and stood up.

[0101] 2. The moving frame moves the fitting mechanism above the unfolded leather sleeve and presses down to secure it. The pressure block and suction cups fix the shape of the leather sleeve. The moving frame retracts, and the support rod disengages.

[0102] 3. The wooden box can be accurately pushed into the leather case through an external upward pushing mechanism to complete the set.

[0103] Example 2

[0104] In the original sleeve spreading mechanism 14, the drive of the bevel gear 146 was achieved through fixed meshing with the gear seat 154 of the transverse frame 15. In this embodiment, in order to achieve independent control of the movement of the bevel gear, a new third motor was added to drive the bevel gear 146 independently.

[0105] Structurally, the fixed mechanical connection between the bevel gear 146 and the original gear seat 154 is eliminated, and the two are replaced by independent rotation via a rotary bearing. The output shaft of the third motor is directly connected to the bevel gear 146, so the speed, direction, and output torque of the bevel gear can be precisely controlled by the forward and reverse rotation of the motor.

[0106] This driver optimization has the following advantages:

[0107] 1. The motion parameters of the bevel gear teeth can be precisely controlled according to real-time control logic, improving transmission control accuracy and enabling better real-time adjustment of the composite opening and closing motion of the strut;

[0108] 2. Increased power source redundancy and independent motor drive ensure backup in case of failure, improving system reliability;

[0109] 3. By eliminating the friction effects of the original linkage, the movement is smoother, reducing noise and vibration of the mechanism.

[0110] As can be seen, the optimization and improvement of the drive mechanism in this embodiment enables more precise and reliable automated control of the sheath opening action.

[0111] Example 3

[0112] To further improve the stability and error prevention of the suit, the structure of the leather suit mechanism 16 has been upgraded:

[0113] 1. Linear clamping devices are installed on both sides of the inner wall of the side support 162. Each device includes a linear guide rail, a slider, and a pneumatic cylinder. The piston rod of the pneumatic cylinder drives the slider to reciprocate horizontally on the guide rail. A clamping wheel is located at the front end of the slider, which can apply pressure to the edge of the sleeve.

[0114] 2. Based on the vacuum suction cup 165, an additional mechanical clamping system has been added. It includes symmetrically arranged upper and lower clamping plates and a central pneumatic cylinder. The cylinder drives the upper clamping plate to move up and down, cooperating with the lower clamping plate to clamp the upper edge of the leather case like pliers.

[0115] The working principle is:

[0116] 1. During the descent of the side support 162, the linear clamping device elastically clamps the edge of the leather sleeve to ensure its precise positioning;

[0117] 2. The suction cup adheres to the upper part of the leather case, and the mechanical buckle clamps the upper edge of the leather case, achieving double anti-misalignment and fixation.

[0118] This makes the kit more reliable, avoids problems such as the leather case peeling and slipping, and greatly reduces rework and scrap.

[0119] Example 4

[0120] To expand the applicability of the equipment, a quick changeover module has been added:

[0121] 1. Design a standardized interface and matching tooling to enable quick assembly and disassembly of the leather sleeve opening mechanism 14, the transverse shift frame 15, and the side support 162;

[0122] 2. By utilizing parametric programming and digital control, in conjunction with an automatic identification system, flexible switching of control logic can be achieved.

[0123] These methods allow for the rapid replacement of key components and control logic of equipment, enabling them to be compatible with different specifications of casings and housings.

[0124] This modular and digital design optimization offers advantages such as rapid product switching and reduced changeover time, significantly improving equipment versatility and lowering user investment costs. Users can achieve automated assembly of various cases and cases through simple configuration and parameter adjustments, meeting the needs of small-batch and multi-variety production.

[0125] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. An automatic rectangular box packing machine, characterized in that... The device includes a frame section and a mechanism section. The frame section includes a support frame and a mounting frame. The mechanism section includes a leather sleeve opening mechanism, a horizontal moving frame, a leather sleeve fitting mechanism, and a mounting moving frame. The leather sleeve opening mechanism is used to open the leather sleeve into a three-dimensional unfolded state. The horizontal moving frame can drive the leather sleeve opening mechanism to move horizontally. The leather sleeve fitting mechanism can move the unfolded leather sleeve vertically and fit it onto the box. The mounting moving frame mounts the leather sleeve fitting mechanism and drives its vertical movement. The leather case opening mechanism includes: symmetrically arranged support rods on both sides and their rotation mechanism, wherein the rotation of the support rods can open or close the four corners of the leather case; a transmission mechanism for driving the rotation of the support rods; and an installation structure for fixing or driving the leather case opening mechanism. The transverse frame includes: an actuator for driving its horizontal movement; and a drive mechanism for driving the actuator to operate. The leather suit mechanism includes: a lifting actuator for guiding the movement of the suit; and a drive mechanism for driving the lifting actuator to move up and down. It also includes a quick-change module, which enables rapid switching of components and control logic through standardized interfaces, automatic identification and parameterized control to adapt to the automated assembly of boxes and cases of different specifications. The rotating mechanism of the strut includes: two symmetrically arranged strut arms, one end of each strut being fixed to the distal end of the strut arm and the other end being free; two movable guide rods, one end of each guide rod being fixed to the proximal end of the strut arm; a riding frame on which the guide rods are mounted, the riding frame driving the guide rods to rotate via a transmission mechanism to drive the strut to swing; and a fixed beam fixing the riding frame, the rotation of which can drive the leather sleeve opening mechanism to rotate around a vertical axis. The actuator of the transverse frame includes: a gear set; a rack set; a sliding block and a movable block connected by a sliding connection, wherein the gear set or rack set is fixed on the sliding block; and a threaded transmission mechanism that drives the movable block and the sliding block to move horizontally, wherein the gear set drives the fixed beam to rotate through the rotation of the gear shaft. The lifting actuator includes: two vertically arranged lifting units, which achieve lifting via vertically arranged lifting rails and side supports installed at the lower end; the side supports have inwardly rotating pressing blocks at both ends and suction cups at the upper part; the pressing blocks are flipped and closed by air supply through a pneumatic interface; the suction cups are adsorbed by negative pressure supplied through a vacuum suction cup interface.

2. An automatic assembly method for rectangular boxes, applied to the automatic assembly machine for rectangular boxes as described in claim 1, characterized in that... The process includes the following steps: A) Using a sleeve unfolding mechanism, the sleeve is unfolded from a planar shape into a three-dimensional unfolded state; B) The sleeve unfolding mechanism is moved horizontally by a transverse frame to move the unfolded sleeve to a predetermined position; C) The box is pushed upwards to place it in a predetermined position opposite the sleeve; D) The sleeve fitting mechanism is activated to drive it downwards, and the unfolded sleeve is fitted into the box to achieve fitting.

3. The automatic kitting method according to claim 2, characterized in that... In step A), the leather sleeve opening mechanism opens the four corners of the leather sleeve by rotating the telescopic support rod; in step B), the transverse frame moves horizontally by gear and rack meshing and sliding; in step D), the leather sleeve fitting mechanism drives the side support to descend, and the inner side of the side support is also provided with a pressing and adsorption mechanism.

4. The automatic packing method according to claim 2, characterized in that... It also includes: using standardized quick-change modules to enable rapid switching of equipment components and control logic to adapt to automated kits of different sizes of boxes and cases.

5. The automatic packing method according to any one of claims 2-4, characterized in that... The opening and closing movement of the strut in the leather sleeve spreading mechanism can control the switching between the sleeve retracting and unfolding.

6. The automatic kitting method according to claim 3, characterized in that... The side support can move slightly up and down during descent to search for the optimal engagement position.

Images