A folding mechanism

Abstract

The present application provides a folding mechanism, comprising a frame, on which a transmission roller assembly, two guide rods, and a support platform are provided, wherein the frame further comprises a pressure plate assembly disposed on the guide rods and having an adjustable position, and a push rod, a smoothing sheet, a pressure roller, and a deviation correction mechanism disposed on the support platform. A conveying channel is formed between the pressure plate of the pressure plate assembly and the support platform. The fabric located on one side of the centerline moves along the conveying channel. The front end of the push rod presses against the back of the fabric located on the other side of the centerline to bend the fabric along the centerline. The smoothing sheet acts on the back of the bent fabric to achieve folding. The pressure roller performs a secondary pressing and shaping on the folded fabric. The deviation correction mechanism is used to ensure that the centerline of the fabric is in close contact with the side blocking surface of the pressure plate. The present application has a simple structure, good folding effect, and will not cause damage to the product.

Description

Technical Field

[0001] The invention relates to a folding mechanism. Background Art

[0002] Since some products such as packaging bags, garbage bags, and folding masks are usually made by folding flat plastic films or non-woven fabrics, a folding mechanism is set on the automatic production lines of these products. The core component of the common folding mechanism is the triangle plate, and the film or non-woven fabric is folded into a vertical plane through the triangle plate. In most cases, the folded film or non-woven fabric needs to be converted into a horizontal plane for subsequent processing. Therefore, a steering roller is set, which not only makes the structure complicated, but also lengthens the distance of the production line. In addition, the pointed end of the triangle plate may cause damage to the film or non-woven fabric. Summary of the Invention

[0003] The purpose of the present invention is to provide a folding mechanism which has a simple structure, good folding effect and will not cause damage to products.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] A folding mechanism includes a frame, wherein the frame is provided with a transmission roller assembly, two guide rods and a support platform, and further includes:

[0006] A pressure plate assembly is provided on the guide rod and is position-adjustable. The pressure plate assembly is located on one side of the transmission roller assembly. A conveying channel is formed between the pressure plate of the pressure plate assembly and the support platform. The fabric located on one side of the center line moves along the conveying channel.

[0007] A push rod is provided on the support platform, wherein the front end of the push rod presses against the back surface of the fabric located on the other side of the center line to bend the fabric along the center line;

[0008] A flattening sheet is horizontally arranged on the support platform, and acts on the back of the curved fabric to achieve folding;

[0009] A pressing roller is provided on the support platform, and the pressing roller performs secondary pressing and shaping on the folded fabric;

[0010] A deviation-correcting mechanism is provided on the support platform, and is used to make the center line of the fabric fit tightly with the side blocking surface of the pressing plate.

[0011] Furthermore, the pressure plate includes a flat plate portion and an arc plate portion connected to one end of the flat plate portion, the flat plate portion and the arc plate portion are respectively located on both sides of the guide rod, the flat plate portion is connected to a slider slidably arranged on the two guide rods through a connecting block, and one end of the position adjustment bolt threadedly connected to the frame is pivotally connected to the slider.

[0012] Furthermore, the push rod is located above the trowel blade, and the push rod and the trowel blade are arranged crosswise, and the front end of the trowel blade is close to the pressure roller.

[0013] Furthermore, the push rod includes a connecting rod and a pushing wheel arranged at the front end of the connecting rod, the rear end of the connecting rod is threadedly connected to an adjusting block, and the adjusting block is connected to the support platform through a fixing bolt.

[0014] Furthermore, the pushing wheel includes a retaining frame connected to the connecting rod and a ball installed in the retaining frame, and the retaining frame is in an arc shape.

[0015] Furthermore, a strip hole is provided on the trowel piece, and a fixing bolt passes through the strip hole and is connected to the support platform to fix the trowel piece.

[0016] Furthermore, the two end shafts of the pressure roller are respectively connected to corresponding bearing sliders, the bearing sliders are slidably arranged on the frame, and a pressure adjustment mechanism is provided between the top of the bearing slider and the frame.

[0017] Furthermore, the pressure regulating mechanism includes a buffer spring sleeved on the boss on the top of the bearing slider and a pressure regulating bolt threadedly connected to the frame, and the pressure regulating bolt presses against the end of the buffer spring.

[0018] Furthermore, the correction mechanism includes a rotating shaft pivotally connected to the frame and two circular plates coaxially fixed on the rotating shaft, and a plurality of annularly distributed mounting shafts with rectangular cross-sections are provided between the two circular plates. The mounting shafts are parallel to the rotating shaft, and rollers and reset springs are sequentially mounted on the mounting shafts, and the rollers drive the upper edge of the folded fabric to move to one side.

[0019] Furthermore, a buffer pad is sleeved on the mounting shaft, and the buffer pad is located at an end of the roller away from the return spring.

[0020] It can be seen from the above technical solution that the present invention has the following beneficial effects: since a pressure plate assembly is used to press one side of the fabric, the fabric is bent by the push rod, and the fabric is folded and pressed by the smoothing sheet, the structure is simple, and the folded fabric is in a horizontal plane, so the fabric will not be damaged during the folding process; since the front end of the push rod is a pushing wheel, the ball of the pushing wheel contacts the fabric, and while it plays a pushing role, it will not cause indentations on the fabric, and the pushing wheel runs smoothly and will not affect the running speed of the fabric; since a correction mechanism is provided, the center line of the fabric can be closely fitted with the side block surface of the pressure plate, so that the folding effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] Figure 2 It is a structural schematic diagram of the pushing wheel of the present invention.

[0024] Figure 3 It is a structural schematic diagram of the retaining frame of the pushing wheel of the present invention.

[0025] Figure 4 It is a structural schematic diagram of the correction mechanism of the present invention.

[0026] Figure 5 It is a structural schematic diagram of the pressure regulating mechanism of the present invention.

[0027] Explanation of the accompanying drawings: frame 1, guide rod 11, support platform 12, transmission roller assembly 2, pressure plate assembly 3, pressure plate 31, flat plate portion 311, arc plate portion 312, connecting block 32, slider 33, position adjustment bolt 34, push rod 4, pushing wheel 41, retaining frame 411, ball 412, connecting rod 42, adjustment block 43, smoothing plate 5, pressure roller 6, bearing slider 61, correction mechanism 7, rotating shaft 71, circular plate 72, mounting shaft 73, roller 74, buffer pad 75, return spring 76, pressure adjustment mechanism 8, buffer spring 81, pressure regulating bolt 82, fabric 9. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0029] Reference below Figures 1 to 5 To further explain this application, Figure 1The folding mechanism shown in the figure includes a frame 1, a pressure plate assembly 3, a push rod 4, a smoothing sheet 5, a pressure roller 6 and a correction mechanism 7. The frame 1 is provided with a transmission roller assembly 2, two guide rods 11 and a support platform 12. The pressure plate assembly 3 is adjustable on the guide rod 11. The push rod 4, the smoothing sheet 5, the pressure roller 6 and the correction mechanism 7 are all arranged on the support platform 12. The push rod 4 is located above the smoothing sheet 5, and the push rod 4 and the smoothing sheet 5 are arranged crosswise, and the front end of the smoothing sheet 5 is close to the pressure roller 6. The pressure plate assembly 3 is located on one side of the transmission roller assembly 2. The pressure plate A conveying channel is formed between the pressing plate 31 of the component 3 and the support platform 12. The fabric 9 located on one side of the center line moves along the conveying channel. The front end of the push rod 4 presses against the back of the fabric 9 located on the other side of the center line to bend the fabric 9 along the center line. The smoothing piece 5 acts on the back of the bent fabric 9 to achieve folding. The pressing roller 6 performs secondary pressing and shaping on the folded fabric 9. The correcting mechanism 7 is used to make the center line of the fabric 9 fit tightly with the side stop surface of the pressing plate 31. The folded fabric of this application is directly in a horizontal plane, which reduces the procedures, has a simple structure, and will not cause puncture or pulling to the fabric 9 during the production process.

[0030] The trowel piece 5 is provided with a strip hole, and a fixing bolt passes through the strip hole and is connected to the support platform 12 to fix the trowel piece 5.

[0031] The pressing plate 31 includes a flat plate portion 311 and an arc plate portion 312 connected to one end of the flat plate portion 311. The flat plate portion 311 and the arc plate portion 312 are respectively located on both sides of the guide rod 11. The arc plate portion 312 is used for the transition of the fabric 9 to avoid scratches caused by contact between the flat plate portion 311 and the fabric 9. The flat plate portion 311 is connected to a slider 33 slidably set on the two guide rods 11 through a connecting block 32, and the height of the connecting block 32 is adjustable. One end of the position adjustment bolt 34 threadedly connected to the frame 1 is pivotally connected to the slider 33. The position of the slider 33 is adjusted by rotating the adjusting bolt 34 so that the inner end surface of the pressing plate 31 is close to the center line position of the fabric 9.

[0032] like Figure 2 and Figure 3As shown, the push rod 4 includes a connecting rod 42 and a pushing wheel 41 arranged at the front end of the connecting rod 42, the rear end of the connecting rod 42 is threadedly connected to an adjusting block 43, and the adjusting block 43 is connected to the support platform 12 through a fixing bolt. The height of the adjusting block 43 is adjusted by screwing in or out the fixing bolt, and the position of the pushing wheel 41 is adjusted by rotating the connecting rod 42, wherein the pushing wheel 41 includes a retaining frame 411 connected to the connecting rod 42 and a ball 412 installed in the retaining frame 411, and the retaining frame 411 is arc-shaped to prevent the retaining frame 411 from contacting the fabric 9, and the ball 412 will not produce indentations on the fabric while playing a pushing role, and the ball 412 runs smoothly and will not affect the running speed of the fabric.

[0033] like Figure 4 The cam 73 is provided with a plurality of annular mounting shafts 73 and a plurality of cylindrical mounting shafts 73 connected to the frame 1, the plurality of cylindrical mounting shafts 73 are provided with a plurality of cylindrical mounting shafts 73 connected to the frame 1. The plurality of cylindrical mounting shafts 73 are provided with a plurality of cylindrical mounting shafts 73 connected to the frame 1.

[0034] The outer circumferential surface of the roller 74 is provided with friction protrusions.

[0035] like Figure 5 As shown, the two end shafts of the pressure roller 6 are respectively connected to the corresponding bearing sliders 61, the bearing slider 61 is slidably set on the frame 1, and a pressure adjustment mechanism 8 is provided between the top of the bearing slider 61 and the frame 1, the pressure roller 6 is located above the flat plate portion 311, and the distance between the pressure roller 6 and the flat plate portion 311 is less than the thickness of the fabric 9, and the pressure adjustment mechanism 8 adjusts the pressure of the pressure roller 6 on the fabric 9, wherein the pressure adjustment mechanism 8 includes a buffer spring 81 mounted on the boss on the top of the bearing slider 61 and a pressure-adjusting bolt 82 threadedly connected to the frame 1, and the pressure-adjusting bolt 82 presses on the end of the buffer spring 81.

[0036] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A folding mechanism, comprising a frame (1), wherein the frame (1) is provided with a transmission roller assembly (2), two guide rods (11) and a support platform (12), characterized in that: Also includes: A pressure plate assembly (3) is provided on the guide rod (11) and is position-adjustable. The pressure plate assembly (3) is located on one side of the transmission roller assembly (2). A conveying channel is formed between the pressure plate (31) of the pressure plate assembly (3) and the support platform (12). The fabric (9) located on one side of the center line moves along the conveying channel. A push rod (4) is arranged on the support platform (12), wherein the front end of the push rod (4) presses against the back surface of the fabric (9) located on the other side of the center line to cause the fabric (9) to bend along the center line; A smoothing sheet (5) is horizontally arranged on the support platform (12), the smoothing sheet (5) acts on the back of the curved fabric (9) to achieve folding, and the push rod (4) is located above the smoothing sheet (5), and the push rod (4) and the smoothing sheet (5) are arranged crosswise; A pressing roller (6) is provided on the support platform (12), the pressing roller (6) performs secondary pressing and shaping on the folded fabric (9), and the front end of the smoothing sheet (5) is close to the pressing roller (6); A deviation-correcting mechanism (7) is provided on the support platform (12), and the deviation-correcting mechanism (7) is used to make the center line of the fabric (9) fit tightly with the side stop surface of the pressing plate (31), wherein the deviation-correcting mechanism (7) comprises a rotating shaft (71) pivotally connected to the frame (1) and two circular plates (72) coaxially fixedly provided on the rotating shaft (71), and a plurality of annularly distributed mounting shafts (73) with rectangular cross sections are provided between the two circular plates (72), the mounting shafts (73) are parallel to the rotating shaft (71), and rollers (74) and return springs (76) are sequentially sleeved on the mounting shafts (73), and the rollers (74) drive the upper edge of the folded fabric (9) to move to one side; The push rod (4) includes a connecting rod (42) and a pushing wheel (41) arranged at the front end of the connecting rod (42); the rear end of the connecting rod (42) is threadedly connected to an adjusting block (43); and the adjusting block (43) is connected to the support platform (12) via a fixing bolt; The pushing wheel (41) comprises a retaining frame (411) connected to the connecting rod (42) and a ball (412) installed in the retaining frame (411), and the retaining frame (411) is in an arc shape; A buffer pad (75) is sleeved on the mounting shaft (73), and the buffer pad (75) is located at an end of the roller (74) away from the return spring (76).

2. The folding mechanism according to claim 1, characterized in that: The pressure plate (31) includes a flat plate portion (311) and an arc plate portion (312) connected to one end of the flat plate portion (311). The flat plate portion (311) and the arc plate portion (312) are respectively located on both sides of the guide rod (11). The flat plate portion (311) is connected to a slider (33) slidably arranged on the two guide rods (11) through a connecting block (32). One end of a position adjustment bolt (34) threadedly connected to the frame (1) is pivotally connected to the slider (33).

3. The folding mechanism according to claim 1, characterized in that: The trowel piece (5) is provided with a strip hole, and a fixing bolt passes through the strip hole and is connected to the support platform (12) to fix the trowel piece (5).

4. The folding mechanism according to claim 1, characterized in that: The shafts at both ends of the pressure roller (6) are respectively connected to corresponding bearing sliders (61), the bearing sliders (61) are slidably arranged on the frame (1), and a pressure adjustment mechanism (8) is provided between the top of the bearing slider (61) and the frame (1).

5. The folding mechanism according to claim 4, characterized in that: The pressure regulating mechanism (8) comprises a buffer spring (81) sleeved on a boss at the top of the bearing slider (61) and a pressure regulating bolt (82) threadedly connected to the frame (1), wherein the pressure regulating bolt (82) presses against the end of the buffer spring (81).

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