A push-pull mechanism for product packaging boxes

Abstract

The utility model discloses a kind of push-pull mechanisms for product packaging box, including packaging box, and packaging box is equipped with end door in front and back two sides;Two rows of fixed guide wheels are equipped in the bottom surface of packaging box along its front-back length direction. Support long bracket is placed in packaging box by push-pull mode, and two cylindrical guide rails are fixed in parallel in the bottom of support long bracket along its front-back length direction, and each cylindrical guide rail is located on the fixed guide wheel of corresponding row;One or more bracket assemblies for fixing product are equipped on support long bracket, walking wheel fixing seat is symmetrically equipped on the bottom left and right sides of each bracket assembly on support long bracket, and walking wheel assembly is movably connected with walking wheel fixing seat by big pin shaft;When push-pull mechanism is located in packaging box, walking wheel assembly is in half folding state. The utility model is compact in structure, economical and practical, and can realize the quick loading and unloading of product in cooperation with packaging box, improve the mobility, and have high popularization and application value and social benefit.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical design technology, specifically a push-pull mechanism for product packaging boxes. Background Technology

[0002] For cylindrical products, they need to be fixed in the packaging box during storage and transportation. When packing, a crane is used to first put one end of the product into the main box, and then external force is used to push the product inward so that the center of the product is aligned with the center of the packaging box. When transferring and unpacking, the above actions need to be reversed. The packing and unpacking process is complicated and has poor mobility.

[0003] Therefore, the existing technology has the following shortcomings: 1. The existing packaging boxes do not have a push-pull mechanism, resulting in greater frictional resistance between the product and the packaging box during loading and unloading, making the operation steps complicated and the operation time long; 2. The product requires the use of lifting machinery during use or transportation, making it impossible to quickly load and unload the box. Utility Model Content

[0004] To address the aforementioned issues, this invention presents a push-pull mechanism for product packaging boxes. This mechanism, used in conjunction with the packaging box, enables rapid loading and unloading of products and improves maneuverability.

[0005] This utility model is achieved using the following technical solution:

[0006] A push-pull mechanism for product packaging boxes includes a packaging box body, with end doors on the front and rear sides of the packaging box body; and two rows of fixed guide wheels are provided on the bottom surface of the inner side of the packaging box body along its front-rear length.

[0007] The packaging box contains a long support bracket placed by a push-pull mechanism. Two cylindrical guide rails are fixedly mounted parallel to each other along the bottom of the long support bracket, with each guide rail positioned on a corresponding row of fixed guide wheels. The long support bracket has one or more bracket assemblies for securing the product. Wheel mounting seats are symmetrically located on the left and right sides of the bottom of each bracket assembly, and these wheel mounting seats are movably connected to the wheel assembly via large pins. When the push-pull mechanism is inside the packaging box, the wheel assembly is in a semi-folded state.

[0008] In a further preferred embodiment, the long support bracket has end plates on the front and rear sides and multiple support ribs in the middle, and the end plates are provided with handles.

[0009] More preferably, the walking wheel assembly includes a walking wheel bracket, on which a walking wheel is mounted; the hinge seat at the upper part of the walking wheel bracket is hinged to the walking wheel fixing seat via a large pin, and a large torsion spring is fitted on the large pin. One end of the large torsion spring is connected to the large torsion spring mounting hole of the walking wheel fixing seat, and the other end is tightly connected to the walking wheel bracket, so that the walking wheel assembly is in a vertical state after the walking wheel is detached from the bottom surface of the packaging box.

[0010] In a further preferred embodiment, a small pin is inserted through a hook connection hole on one side of the walking wheel bracket and connected to the middle of the auxiliary clip, and a small torsion spring is fitted on the small pin; when the walking wheel assembly is in a vertical state, the small torsion spring causes the hook at the upper end of the auxiliary clip to be located in the hook fixing groove on one side of the walking wheel fixing seat.

[0011] More preferably, each fixed guide wheel has a small side guide wheel horizontally arranged on its inner side; two L-shaped guide rails are fixedly arranged parallel to each other along the front and rear length direction at the bottom center of the support bracket; the L-shaped guide rails cooperate with the small side guide wheels of the corresponding column.

[0012] More preferably, the supporting bracket is made of composite fiber material.

[0013] During use, the rolling friction between the cylindrical guide rail and the fixed guide wheel reduces frictional resistance as the support bracket is pulled out. When the bracket assembly is pulled out of the packaging box, under the action of the large torsion spring and the gravity of the traveling wheel assembly, the traveling wheel assembly swings downward and backward to be perpendicular to the ground. At the same time, the auxiliary clip is lifted by the small torsion spring and the hook enters the hook fixing groove of the traveling wheel fixing seat to complete the locking, preventing the traveling wheel from swinging forward during the pushing and pulling process. Gradually pull out the packaging box to complete the pull-out action of the support bracket (achieving product unpacking).

[0014] During the process of pushing the support frame in, when the auxiliary clip contacts the bottom of the packaging box, the small torsion spring is compressed under the action of horizontal thrust, and the hook is lifted and disengaged from the hook fixing groove. At this time, the traveling wheel assembly also gradually swings upward and forward as it contacts the bottom of the packaging box, gradually entering the packaging box and completing the pushing action of the support frame (realizing product packing).

[0015] The technical solution provided by this utility model has the following advantages compared with the prior art:

[0016] 1. This utility model adopts a roller structure and guide rail, which changes sliding friction to rolling friction, reducing the frictional resistance when loading and unloading products. The entire process does not require the use of lifting machinery, thus shortening the loading and unloading time of products.

[0017] 2. This utility model is designed with wheels, which enables rapid transfer of products;

[0018] 3. This utility model optimizes the structural design and reduces the structural weight by using composite materials without affecting the packing and unpacking functions;

[0019] 4. The optimized structural design of this utility model enables semi-automatic swinging of the walking wheel assembly.

[0020] This utility model is reasonably designed, compact in structure, economical and practical. When used with packaging boxes, it can realize the rapid loading and unloading of products, improve mobility, and has high promotion and application value and social benefits. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a front view of the present invention.

[0024] Figure 2 A schematic diagram showing the fixed guide wheel and the small side guide wheel.

[0025] Figure 3 express Figure 1 A schematic diagram of the FF cross section.

[0026] Figure 4 This is a longitudinal cross-sectional view of the present invention.

[0027] Figure 5 express Figure 4 GG cross-sectional view.

[0028] Figure 6 This is a cross-sectional view of the entire utility model.

[0029] Figure 7 This is a partial longitudinal cross-sectional view of the present invention.

[0030] Figure 8 This shows a front view of the supporting long bracket section.

[0031] Figure 9 This is a top view of the supporting long bracket section.

[0032] Figure 10 This shows a side view of the supporting long bracket.

[0033] Figure 11 This is a schematic diagram of the structure of the wheel mounting base.

[0034] Figure 12 This is a schematic diagram of the walking wheel assembly.

[0035] Figure 13 express Figure 12 Top view.

[0036] Figure 14 This is a schematic diagram of the auxiliary card structure.

[0037] In the diagram: 100-Packaging box body, 101-End door, 102-Fixed guide wheel, 103-Small side guide wheel; 200-Supporting long bracket, 201-End plate, 202-Handle, 203-Supporting rib, 204-Cylindrical guide rail, 205-L-shaped guide rail, 206-Bracket assembly, 207-Walking wheel fixing seat, 208-Hook fixing groove, 209-Large pin, 210-Walking wheel assembly, 211-Walking wheel bracket, 212-Walking wheel, 213-Hinge seat, 214-Large torsion spring, 215-Auxiliary clip, 216-Small pin, 217-Hook connection hole, 218-Small torsion spring, 219-Hook, 220-Large torsion spring mounting hole. Detailed Implementation

[0038] To better understand the above-mentioned objectives, features, and advantages of this utility model, the solution of this utility model will be further described below. It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other.

[0039] In this description, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. It should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0040] Many specific details are set forth in the following description in order to provide a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the present invention, and not all embodiments.

[0041] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0042] A push-pull mechanism for product packaging boxes is used to enable rapid packing, unpacking, and transfer of products. This mechanism is installed inside the original packaging box and is used in conjunction with the packaging box.

[0043] like Figure 1 As shown, the packaging box 100 has end doors 101 on both the front and rear sides; as Figure 6 As shown, the inner bottom surface of the packaging box 100 is provided with two rows of fixed guide wheels 102 along its front-to-back length. Each fixed guide wheel 102 has a horizontally arranged side guide wheel 103 on its inner side. Figure 2 As shown.

[0044] The push-pull mechanism is designed with a long support bracket for product installation and fixation. This support bracket is made of carbon fiber, which reduces product weight. For example... Figure 3 , Figure 4 As shown, a long support bracket 200 is placed inside the packaging box 100 via a push-pull mechanism. The long support bracket 200 has end plates 201 on both the front and rear sides, and multiple support ribs 203 in the middle. A handle 202 is provided on the end plates 201. Figure 6 As shown, it is used to pull out and push in the support frame to achieve quick loading and unloading.

[0045] like Figure 6 As shown, 11 sets of fixed guide wheel assemblies (i.e., 11 fixed guide wheels per row) are designed inside the packaging box. The fixed guide wheel assemblies are centered and at the same height. The fixed guide wheel assemblies are securely connected to the pre-embedded parts inside the packaging box using bolts. Figure 3 , Figure 5 , Figure 10 As shown, two cylindrical guide rails 204 are fixedly mounted parallel to each other along the front-to-back length of the bottom of the long support bracket 200, and each cylindrical guide rail 204 is supported on the fixed guide wheel 102 of the corresponding column. Two L-shaped guide rails 205 are fixedly mounted parallel to each other along the front-to-back length of the bottom of the long support bracket 200; the L-shaped guide rails 205 cooperate with the small side guide wheels 103 of the corresponding column to prevent excessive swaying of the long support bracket 200 during the pushing and pulling process.

[0046] like Figure 6 , Figure 8 , Figure 9 As shown, the support bracket 200 is provided with two sets of bracket assemblies 206, which are used to securely fix the product.

[0047] like Figure 5 , Figure 7 As shown, symmetrical wheel mounting seats 207 are provided on the left and right sides of the bottom of each bracket assembly 206 on the supporting long bracket 200. The wheel mounting seats 207 are firmly connected to the bottom of the bracket assembly 206 by bolts. The side plate of the wheel mounting seat 207 is designed with large torsion spring mounting holes 220, such as... Figure 11 As shown.

[0048] like Figure 7 As shown, the wheel mounting base 207 is movably connected to the wheel assembly 210 via a large pin 209; when the push-pull mechanism is inside the packaging box 100, the wheel assembly 210 is in a semi-folded state.

[0049] like Figure 12 As shown, the traveling wheel assembly 210 includes a traveling wheel bracket 211, on which a traveling wheel 212 is mounted; the hinge seat 213 on the upper part of the traveling wheel bracket 211 is hinged to the traveling wheel fixing seat 207 via a large pin 209, as shown. Figure 5 As shown, a large torsion spring 214 is coaxially mounted on the large pin shaft 209. One end of the large torsion spring 214 is connected to the large torsion spring mounting hole 220 of the traveling wheel fixing seat 207, and the other end is tightly connected to the traveling wheel bracket 211, providing torque to the traveling wheel assembly 210 at all times. When the push-pull mechanism is pulled out, under the action of the large torsion spring 214 and the gravity of the traveling wheel assembly 210, the traveling wheel assembly 210 swings downward and backward, so that the traveling wheel 212 is in a vertical state after it is separated from the bottom surface of the packaging box 100.

[0050] The wheel assembly is designed with a hook structure. For example... Figure 12 , Figure 13 and Figure 14 As shown, a small pin 216 is inserted through a hook connection hole 217 on one side of the walking wheel bracket 211 and connected to the middle of the auxiliary clip 215. A small torsion spring 218 is coaxially mounted on the small pin 216 (one end of the small torsion spring is mounted on the back plate of the walking wheel and the other end is mounted on the lower part of the auxiliary clip, providing continuous torque to the auxiliary clip). When the walking wheel assembly 210 is in a vertical state, the small torsion spring 218 causes the hook 219 at the upper end of the auxiliary clip 215 to be located in the hook fixing groove 208 on one side of the walking wheel fixing seat 207.

[0051] During the pulling out of the support bracket 200, the cylindrical guide rail 204 and the fixed guide wheel 102 roll and rub against each other, reducing frictional resistance. When the traveling wheel assembly 210 swings downward and backward to be perpendicular to the ground, the auxiliary latch 215 is lifted by the small torsion spring 218, and the latch 219 enters the latch fixing groove 208 of the traveling wheel fixing seat 207 to lock, preventing the traveling wheel 212 from swinging forward during the pushing and pulling process, gradually pulling out the packaging box, and completing the pulling out action of the support frame (realizing product unpacking). During the pushing in of the support frame, when the auxiliary latch 215 contacts the bottom of the packaging box, the small torsion spring 218 is compressed under the action of horizontal thrust, and the latch 219 is lifted and disengaged from the latch fixing groove 208. At this time, the traveling wheel assembly 210 gradually swings upward and forward, gradually entering the packaging box, and completing the pushing in action of the support frame (realizing product packing).

[0052] The above description is merely a specific embodiment of this utility model, enabling those skilled in the art to understand or implement it. Although detailed descriptions have been provided with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments, and all should be covered by the protection scope of the claims.

Claims

1. A push-pull mechanism for a product packaging box, comprising a packaging box body (100), wherein the packaging box body (100) is provided with end doors (101) on both the front and rear sides; characterized in that: The inner bottom surface of the packaging box (100) is provided with two rows of fixed guide wheels (102) along its front and rear length direction; The packaging box (100) contains a long support bracket (200) placed inside by a push-pull mechanism. The bottom of the long support bracket (200) is fixed with two cylindrical guide rails (204) parallel to its front-to-back length direction. Each cylindrical guide rail (204) is located on a fixed guide wheel (102) in the corresponding column. The long support bracket (200) has one or more bracket assemblies (206) for fixing products. The long support bracket (200) has symmetrically arranged wheel fixing seats (207) on the left and right sides of the bottom of each bracket assembly (206). The wheel fixing seats (207) are movably connected to the wheel assembly (210) through a large pin (209). When the push-pull mechanism is inside the packaging box (100), the wheel assembly (210) is in a semi-folded state.

2. The push-pull mechanism for product packaging boxes according to claim 1, characterized in that: The long support bracket (200) has end plates (201) on the front and rear sides and multiple support ribs (203) in the middle. The end plates (201) are equipped with handles (202).

3. A push-pull mechanism for product packaging boxes according to claim 1 or 2, characterized in that: The walking wheel assembly (210) includes a walking wheel bracket (211), on which a walking wheel (212) is mounted; the hinge seat (213) on the upper part of the walking wheel bracket (211) is hinged to the walking wheel fixing seat (207) through a large pin (209), and a large torsion spring (214) is fitted on the large pin (209). One end of the large torsion spring (214) is connected to the large torsion spring mounting hole (220) of the walking wheel fixing seat (207), and the other end is tightly connected to the walking wheel bracket (211), so that the walking wheel assembly (210) is in a vertical state after the walking wheel (212) is separated from the bottom surface of the packaging box (100).

4. A push-pull mechanism for product packaging boxes according to claim 3, characterized in that: The walking wheel bracket (211) has a small pin (216) inserted through a hook connection hole (217) on one side, which is connected to the middle of the auxiliary clip (215). A small torsion spring (218) is fitted on the small pin (216). When the walking wheel assembly (210) is in a vertical state, the small torsion spring (218) causes the hook (219) at the upper end of the auxiliary clip (215) to be located in the hook fixing groove (208) on one side of the walking wheel fixing seat (207).

5. A push-pull mechanism for product packaging boxes according to claim 4, characterized in that: Each fixed guide wheel (102) has a small side guide wheel (103) horizontally arranged on its inner side. The support bracket (200) has two L-shaped guide rails (205) fixedly installed at the bottom center along its front-to-back length direction; the L-shaped guide rails (205) cooperate with the small side guide wheels (103) of the corresponding column.

6. A push-pull mechanism for product packaging boxes according to claim 5, characterized in that: The supporting long bracket (200) is made of composite fiber material.

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