Transmission mechanism of automatic case nailing machine and automatic case nailing machine

Abstract

This invention discloses a transmission mechanism for an automatic box-stitching machine and the automatic box-stitching machine itself, relating to the field of automatic box-stitching machine technology. It includes a swing-type stapling head assembly, a leveling assembly, and a linkage arm. The leveling assembly includes a base plate, a swing structure, and a horizontal arm. The base plate and the swing-type stapling head assembly are on the same mounting surface. A pair of swing parts are rotatably connected to the base plate, and both ends of the horizontal arm are rotatably connected to the lower parts of the pair of swing structures. The linkage arm connects the swing end of the swing-type stapling head assembly to the swing structure. This invention connects the swing-type stapling head assembly and the leveling assembly, achieving absolute synchronous swinging between the leveling assembly and the stapling head assembly. This keeps the leveling plate and the carton relatively stationary throughout the stapling process. Furthermore, it automatically pushes the slider downwards as the swing arm swings with the stapling head, compensating for height changes caused by the swinging process.

Description

Technical Field

[0001] This invention relates to the field of automatic box-stitching machine technology, specifically to a transmission mechanism for an automatic box-stitching machine and the automatic box-stitching machine itself. Background Technology

[0002] Automatic carton staplers are core equipment in the post-processing of cartons, capable of automatically completing the conveying, positioning, and staplering operations of cartons.

[0003] To ensure the quality of carton stapling under high-speed conveying conditions, existing technologies widely employ oscillating stapling head assemblies. When the folded carton is conveyed to the stapling station via the conveyor line, the stapling head assembly oscillates at a certain angle with the direction of the carton's movement while stapling the carton with saddle stitches. This effectively improves the stapling quality and stability. In addition, to ensure that the saddle stitches can successfully and firmly staple multiple layers of cardboard together, a leveling mechanism is usually installed in front of the stapling head assembly. The leveling mechanism presses the carton before it enters the stapling station.

[0004] However, during high-speed operation, the leveling platen and the moving carton experience continuous relative sliding, which can damage the surface. If the clamping force is reduced to alleviate the damage, gaps may appear in the multiple layers of cardboard, leading to defects such as loose stapling and bent nails, which severely reduces the structural strength of the carton. Summary of the Invention

[0005] The purpose of this invention is to provide a transmission mechanism for an automatic box-stitching machine and an automatic box-stitching machine in order to overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a transmission mechanism for an automatic nailing machine, comprising a swing-type nail head assembly, a leveling assembly, and a linkage arm;

[0007] The leveling assembly includes a base plate, a swing structure, and a horizontal arm. The base plate and the swing nail head assembly are on the same mounting surface. A pair of swing parts are rotatably connected to the base plate, and the two ends of the horizontal arm are rotatably connected to the lower part of the pair of swing structures.

[0008] The linkage arm connects the swing end of the swing nail head assembly to the swing structure.

[0009] Preferably, the swing structure includes a mandrel, a swing arm, a first spring, an adaptive adjustment part, and a slider. The mandrel is fixedly connected to the substrate, and the swing arm is rotatably connected to the mandrel. The lower part of the swing arm has an inner cavity for accommodating the sliding of the slider. The first spring is located in the inner cavity and applies an upward thrust to the slider. A connecting shaft is provided on one side of the slider, and the other end of the connecting shaft is rotatably inserted into the horizontal arm. When the swing arm swings with the swing-type nail head assembly, the adaptive adjustment part applies a downward thrust to the slider, so that the first spring is compressed and the horizontal arm moves down to press the cardboard.

[0010] Preferably, the adaptive adjustment part includes an annular protrusion, a column, a second spring, and a pressure column. The annular protrusion is fixed on the spindle, the column is fixedly mounted on the slider, the pressure column is slidably disposed on the upper part of the rocker arm, and the second spring is disposed between the pressure column and the column.

[0011] Preferably, under the elastic force of the second spring, there is a gap between the upper surface of the slider and the upper part of the inner cavity of the rocker arm.

[0012] Preferably, a bending plate is provided on one side of the substrate, and a pre-pressing plate is provided on the bending plate.

[0013] Preferably, it also includes a clamping plate, which is fixedly installed on the lower part of the horizontal arm.

[0014] Preferably, it includes a counting component for recording the number of swings of the oscillating nail head assembly.

[0015] Preferably, the counting assembly includes a frame and a counting sensor. The frame is mounted on a base plate, and the counting sensor is mounted on the frame with its monitoring end facing the clamping plate.

[0016] An automatic box-napping machine, the automatic box-napping machine including a transmission mechanism.

[0017] Preferably, it also includes a roller line, an upper pressure plate, and a pressing line. The roller line is arranged along the swing direction of the swinging nail head assembly. The pressing plate is arranged above the roller line. The gap between the pressing plate and the roller line is used for the passage of the cardboard. The pressing line is used to press the edge of the cardboard and drive the cardboard forward.

[0018] In the above technical solution, the present invention provides a transmission mechanism for an automatic carton nailing machine and an automatic carton nailing machine, which connects the swing-type nail head assembly with the leveling assembly, realizing the absolute synchronous swing of the leveling assembly and the nail head assembly, so that the leveling pressure plate and the carton remain relatively stationary throughout the nailing process.

[0019] The self-adaptive adjustment unit built into the leveling component can automatically push the slider down as the swing arm swings with the nail head, compensating for the height change caused by the swing, so that the pressure plate can stably contact the carton surface. Moreover, the leveling mechanism of the present invention only reaches the maximum pressure at the moment of nailing, and presses down on the carton through the self-adaptive adjustment unit, and lifts up immediately after nailing is completed. The contact time with the carton is shortened compared with the fixed leveling mechanism, and the probability of crushing the carton is greatly reduced. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the transmission mechanism and overall structure of an automatic box-napping machine according to the present invention.

[0022] Figure 2 This is a schematic diagram of the transmission mechanism of an automatic box-pinning machine according to the present invention;

[0023] Figure 3 This is a schematic diagram of the swing arm of the transmission mechanism of an automatic nailing machine of the present invention in a vertical state;

[0024] Figure 4 This is a schematic diagram of the swing arm of the transmission mechanism of an automatic nailing machine of the present invention in an inclined state.

[0025] Figure 5 This is a partial sectional view of the transmission mechanism of an automatic box-pinning machine according to the present invention;

[0026] Figure 6 This is a schematic diagram of the annular protrusion of the transmission mechanism of an automatic box-making machine according to the present invention.

[0027] Explanation of reference numerals in the attached drawings: 1. Roller line; 2. Pressure plate; 3. Pressure line; 4. Swinging nail head assembly; 5. Leveling assembly; 6. Linkage arm; 7. Counting assembly; 51. Base plate; 52. Swinging structure; 53. Connecting shaft; 54. Horizontal arm; 55. Pressure plate; 56. Bending plate; 57. Pre-pressing plate; 521. Mandrel; 522. Swinging arm; 523. Ring protrusion; 524. First spring; 525. Slider; 526. Column; 527. Second spring; 528. Pressure column; 71. Frame; 72. Counting sensor. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Please see Figure 1-5 The transmission mechanism of an automatic nailing machine provided in this embodiment of the invention includes a swing nail head assembly 4, a leveling assembly 5, and a linkage arm 6.

[0030] The leveling assembly 5 includes a base plate 51, a swing structure 52, and a horizontal arm 54. The base plate 51 and the swing nail head assembly 4 are on the same mounting surface. A pair of swing structures 52 are rotatably connected to the base plate 51. The two ends of the horizontal arm 54 are respectively rotatably connected to the lower part of the pair of swing structures 522.

[0031] The linkage arm 6 connects the swing end of the swing nail head assembly 4 to the swing structure 52.

[0032] Specifically, the swing end of the swing-type staple head assembly 4 is directly connected to the swing structure 52 of the leveling assembly 5 via the linkage arm 6. When the carton reaches the stapleing station, the swing-type staple head assembly 4 moves downward to staple the carton into the carton, and simultaneously swings synchronously at a certain angle with the carton's forward direction (the swing-type staple head assembly 4 is existing technology, and its working principle will not be described in detail here). During this process, the linkage arm 6 transmits the swing power of the swing-type staple head assembly 4 to the leveling assembly 5, which can drive the leveling assembly 5 and the swing-type staple head assembly 4 to swing synchronously at the same angle and speed. This can reduce the relative sliding between the pressing end of the leveling assembly 5 and the carton during the entire stapleing process, ensuring the stability of the carton during stapleing. Furthermore, based on this, the present invention can use a sufficiently large pressing force to ensure the leveling effect without worrying about damaging the surface of the carton.

[0033] In another embodiment of the present invention, the swing structure 52 includes a spindle 521, a swing arm 522, a first spring 524, an adaptive adjustment part, a slider 525, and the spindle 521. The spindle 521 is fixedly connected to the base plate 51, and the swing arm 522 is rotatably connected to the spindle 521. The lower part of the swing arm 522 has an inner cavity for accommodating the sliding of the slider 525. The first spring 524 is located in the inner cavity and applies an upward pushing force to the slider 525. A connecting shaft 53 is provided on one side of the slider 525, and the other end of the connecting shaft 53 is rotatably inserted into the horizontal arm 54. When the swing arm 522 swings with the swing-type nail head assembly 4, the adaptive adjustment part applies a downward pushing force to the slider 525, so that the first spring 524 is compressed, and the horizontal arm 54 moves down to press the cardboard. The adaptive adjustment unit includes an annular protrusion 523, a column 526, a second spring 527, and a pressure column 528. The annular protrusion 523 is fixed on the spindle 521, the column 526 is fixedly installed on the slider 525, the pressure column 528 is slidably disposed on the upper part of the rocker arm 522, and the second spring 527 is disposed between the pressure column 528 and the column 526.

[0034] Specifically, in the non-working state, the first spring 524 pushes the slider 525 to remain in the upper position of the inner cavity, causing the pressure plate 55 to be raised, maintaining a sufficient gap between it and the roller line 1 for the carton to pass smoothly. When the rocker arm 522 swings forward with the rocker head assembly 4, the upper end of the pressure column 528 gradually contacts the annular protrusion 523 fixed on the spindle 521. The annular protrusion 523 applies a downward thrust to the pressure column 528, causing the pressure column 528 to slide downward along the upper part of the rocker arm 522, compressing the second spring 527. The elastic force of the second spring 527 is transmitted to the slider 525 through the column 526, overcoming the upward thrust of the first spring 524, and pushing the slider 525 downward along the lower inner cavity of the rocker arm 522. This, in turn, drives the horizontal arm 54 and the pressure plate 55 to move downward through the connecting shaft 53, compensating for the height change caused by the increase in the swing angle of the rocker arm 522, and causing the pressure plate 55 to move downward. During the oscillation process, the surface of the carton is pressed down. This setting eliminates the problem of the pressing plate 55 being tight at the beginning and loose at the end, improving the leveling effect. After the nailing is completed, the oscillating nail head assembly 4 drives the swing arm 522 to swing back and reset. The pressure column 528 gradually disengages from the action of the annular protrusion 523. This reduces the pressure on the first spring 524. The upward thrust of the first spring 524 pushes the slider 525 to slide upward along the inner cavity and reset, causing the pressing plate 55 to lift off the surface of the carton. Furthermore, the leveling mechanism of this invention applies the maximum pressing force to the carton only at the moment of nailing, and the contact time with the carton is significantly shortened compared to the fixed leveling mechanism, further reducing the risk of damage to the surface of the carton.

[0035] In another embodiment of the present invention, under the elastic force of the second spring 527, there is a gap between the upper surface of the slider 525 and the upper part of the inner cavity of the rocker arm 522.

[0036] Specifically, in the non-working state, the elastic force of the second spring 527 keeps the upper end of the pressure column 528 at its highest point (the ball bearing at the top of the pressure column 528 abuts against the spindle 521), while maintaining a certain gap between the upper surface of the slider 525 and the upper part of the inner cavity of the rocker arm 522. In this way, the gap between the upper and lower surfaces of the slider 525 is formed by the cooperation of the first spring 524 and the second spring 527. Without the need for an additional limiting structure, this gap structure can ensure that the slider 525 only contacts the inner walls of both sides of the inner cavity of the rocker arm 522 during the entire engagement and reset movement. Its upper and lower surfaces will not contact the inner cavity, which greatly reduces the generation of noise and vibration and improves the smoothness of the leveling assembly 5.

[0037] In an embodiment of the present invention, a bending plate 56 is provided on one side of the substrate 51, and a pre-pressing plate 57 is provided on the bending plate 56. A pressing plate 55 is also included, which is fixedly installed on the lower part of the horizontal arm 54.

[0038] Specifically, the pressing plate 55 is used to directly press the surface of the carton, and the pre-pressing plate 57 can pre-level the carton before it enters the leveling station, flattening any obvious warping.

[0039] In another embodiment of the present invention, a counting component 7 is included, which is used to record the number of swings of the oscillating nail head assembly 4. The counting component 7 includes a frame 71 and a counting sensor 72. The frame 71 is mounted on a base plate 51, and the counting sensor 72 is mounted on the frame 71, with the monitoring end of the counting sensor 72 facing the pressure plate 55.

[0040] Specifically, in this embodiment, the leveling component 5 can not only perform leveling, but also serve as a counting reference. Since each swing of the clamping plate 55 strictly corresponds to one nailing action, the leveling component 5 can not only be used for leveling, but the counting sensor 72 can accurately record the number of nail boxes by detecting the number of swings of the clamping plate 55. There is no need to set up an additional counting device at the swing-type nail head component 4, which effectively frees up the operating space around the swing-type nail head component 4, provides sufficient convenience for nail wire feeding and equipment maintenance, and further optimizes the overall layout of the equipment.

[0041] In another embodiment of the present invention, an automatic box-stitching machine includes a transmission mechanism. It also includes a roller line 1, an upper pressure plate 2, and a pressing line 3. The roller line 1 is arranged along the swing direction of the swing-type nail head assembly 4. The upper pressure plate 2 is disposed above the roller line 1, and the gap between the upper pressure plate 2 and the roller line 1 is used for the passage of cardboard. The pressing line 3 is used to press the edges of the cardboard and drive the cardboard forward.

[0042] In this embodiment, a gap is formed between the pressing plate 2 and the roller line 1 to allow the carton to pass through, which can be used to limit the carton's vertical movement. The pressing line 3 presses the edge of the carton and drives the carton to move forward continuously, accurately conveying the carton to the stapling station. The transmission mechanism, as the core component of the automatic stapling machine, includes a swing-type stapling head assembly 4, a leveling assembly 5, and a linkage arm 6, which are used to realize the synchronous action of stapling and leveling.

[0043] Furthermore, the entire transmission mechanism of this invention is mounted on the base plate 51. All leveling components 5, linkage arms 6, and counting components 7 are integrated and mounted on the base plate 51, forming an independent modular unit. This unit can be directly installed next to the nail head assembly of any existing swing-type nailing machine without any modification to the main structure of the equipment.

[0044] The linkage arm 6 is a rigid connecting rod, and its two ends are respectively hinged to the swing end of the swing nail head assembly 4 and the lower part of the swing arm 522.

[0045] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A drive mechanism of an automatic case nailing machine comprising a swinging nailing head assembly (4), characterized in that, Includes leveling components (5) and linkage arms (6); The leveling assembly (5) includes a base plate (51), a swing structure (52), and a horizontal arm (54). The base plate (51) and the swing nail head assembly (4) are on the same mounting surface. A pair of swing structures (52) are rotatably connected to the base plate (51), and the two ends of the horizontal arm (54) are rotatably connected to the lower part of the pair of swing structures (522). The linkage arm (6) connects the swing end of the swing nail head assembly (4) to the swing structure (52).

2. The transmission mechanism of an automatic box-stitching machine according to claim 1, characterized in that, The swing structure (52) includes a spindle (521), a swing arm (522), a first spring (524), an adaptive adjustment part, and a slider (525). The spindle (521) is fixedly connected to the base plate (51), and the swing arm (522) is rotatably connected to the spindle (521). The lower part of the swing arm (522) has an inner cavity for accommodating the sliding of the slider (525). The first spring (524) is located in the inner cavity and applies an upward thrust to the slider (525). A connecting shaft (53) is provided on one side of the slider (525). The other end of the connecting shaft (53) is rotatably inserted into the horizontal arm (54). When the swing arm (522) swings with the swing-type nail head assembly (4), the adaptive adjustment part applies a downward thrust to the slider (525) so that the first spring (524) is compressed and the horizontal arm (54) moves down to press the cardboard.

3. The transmission mechanism of an automatic box-stitching machine according to claim 2, characterized in that, The adaptive adjustment unit includes an annular protrusion (523), a column (526), ​​a second spring (527), and a pressure column (528). The annular protrusion (523) is fixed on the spindle (521), the column (526) is fixedly installed on the slider (525), the pressure column (528) is slidably disposed on the upper part of the rocker arm (522), and the second spring (527) is disposed between the pressure column (528) and the column (526).

4. The transmission mechanism of an automatic box-stitching machine according to claim 3, characterized in that, Under the elastic force of the second spring (527), there is a gap between the upper surface of the slider (525) and the upper part of the inner cavity of the rocker arm (522).

5. The transmission mechanism of an automatic box-stitching machine according to claim 1, characterized in that, A bending plate (56) is provided on one side of the substrate (51), and a pre-pressing plate (57) is provided on the bending plate (56).

6. The transmission mechanism of an automatic box-stitching machine according to claim 1, characterized in that, It also includes a clamping plate (55), which is fixedly installed on the lower part of the horizontal arm (54).

7. The transmission mechanism of an automatic box-stitching machine according to claim 6, characterized in that, Includes a counting component (7), which is used to record the number of swings of the oscillating nail head component (4).

8. The transmission mechanism of an automatic box-stitching machine according to claim 7, characterized in that, The counting assembly (7) includes a frame (71) and a counting sensor (72). The frame (71) is mounted on a base plate (51), and the counting sensor (72) is mounted on the frame (71). The monitoring end of the counting sensor (72) faces the pressure plate (55).

9. An automatic box-stitching machine, implemented based on the transmission mechanism according to any one of claims 1-8, characterized in that, The automatic box-nailing machine includes a transmission mechanism.

10. An automatic box-stitching machine according to claim 9, characterized in that, It also includes a roller line (1), an upper pressure plate (2), and a pressing line (3). The roller line (1) is set along the swing direction of the swing-type nail head assembly (4). The pressing plate (2) is set above the roller line (1). The gap between the pressing plate (2) and the roller line (1) is used for the passage of the cardboard. The pressing line (3) is used to press the edge of the cardboard and drive the cardboard forward.

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