A folding device and a production line for sealing woven bags

Abstract

The present invention discloses a folding device, including a frame and a folding mechanism arranged on the frame, the frame including a support rod, a bearing plate connected to the side of the support rod and two sleeves fixed on the bottom of the bearing plate, the folding mechanism including a first clamping plate, a second clamping plate, a first folding plate, a second folding plate and a guide rod, one end of the first clamping plate is hinged on one sleeve, one end of the second clamping plate is fixed on the other sleeve, the first folding plate is uprightly arranged on the top surface of the first clamping plate, the second folding plate is uprightly arranged on the top surface of the second clamping plate, the guide rod is used to guide the bag opening in the gap to be bent to one side of the second folding plate, the first clamping plate and the second clamping plate are connected by an elastic member, the first clamping plate overcomes the elastic force of the elastic member and swings around the sleeve to adjust the size of the gap, and the bag opening is sealed through a woven bag sealing production line. The folding effect of the present invention is good, and it helps to improve the sealing quality of the bag opening of the woven bag after folding.

Description

Technical Field

[0001] The invention relates to the field of packaging machines, and in particular to a folding device and a production line for sealing woven bags having the folding device. Background Art

[0002] After the feed is processed into finished products, it is usually packed in plastic woven bags and other packaging bags before being sealed. During the sealing process, the mouth of the plastic woven bag filled with feed is usually folded before being sewn and sealed. The existing folding process is generally performed by a folding machine. After the folding machine folds the mouth of the woven bag in half, the bag mouth is clamped to the sewing machine for sealing. Due to equipment defects, the existing folding machine causes the gap of the woven bag mouth to become larger or smaller. When the gap becomes larger, the woven bag mouth becomes loose, making the folding effect worse or even failing, thereby affecting the sealing process; when the gap becomes smaller, the woven bag mouth is not easy to pass through, and even stuck in the clamping gap of the folding machine, and the bag mouth is prone to wrinkles, which greatly affects the folding and sealing process and quality of the woven bag. Summary of the invention

[0003] To solve the above problems, the present invention provides a folding device and a production line for sealing woven bags, which can timely adjust the folding process of the woven bag mouth, have good folding effect, and improve the sealing quality of the woven bag mouth.

[0004] The technical solution of the present invention is as follows: a folding device comprises a frame and a folding mechanism arranged on the frame, the frame comprises a support rod, a bearing plate connected to the side of the support rod and a sleeve fixed on the bottom surface of the bearing plate, the folding mechanism comprises a first clamping plate, a second clamping plate, a first folding plate, a second folding plate and a guide rod, one end of the first clamping plate is hinged on a sleeve thereof, one end of the second clamping plate is fixed on another sleeve, a feed port is formed between the other end of the first clamping plate and the other end of the second clamping plate, the first folding plate is uprightly arranged on the top surface of the first clamping plate, the second folding plate is uprightly arranged on the top surface of the second clamping plate, a gap is formed between the first folding plate and the second folding plate, one end of the guide rod is fixed on the first folding plate, and the other end crosses the second folding plate The top end extends obliquely downward to one side of the second folding plate. When the bag mouth of the woven bag enters the gap between the first folding plate and the second folding plate, the guide rod guides the bag mouth to bend to one side of the second folding plate. The first clamping plate and the second clamping plate are connected by an elastic structure. The elastic structure includes a first rod body, a second rod body and an elastic member. One end of the first rod body is uprightly arranged on the top surface of the first clamping plate, and the other end is connected to a roller. The roller is rotatably arranged on the top surface of the supporting plate. One end of the second rod body is uprightly fixed on the top of the second clamping plate, and the other end is connected to the supporting plate. The elastic member is connected between the first rod body and the second rod body, so that when the bag mouth enters the gap from the feed port, the first clamping plate overcomes the elastic force of the elastic member and swings around the sleeve, and the roller rolls on the top surface of the supporting plate.

[0005] Furthermore, the side of the first folding plate is connected to a top plate, the bottom side of the top plate is connected to a third folding plate, the third folding plate is arranged on the side of the second folding plate opposite to the gap, and one end of the third folding plate is arranged on the end side of the guide rod.

[0006] Furthermore, the first folding plate and the second folding plate are respectively bent to one side at one end of the feed inlet to guide the woven bag opening to enter.

[0007] Furthermore, a clamping and conveying mechanism is provided in the gap, and the clamping and conveying mechanism includes a plurality of first rollers, a plurality of second rollers and two conveyor belts, the first rollers and the second rollers are respectively arranged at the bottom ends of the first clamping plate and the second clamping plate, the conveyor belts are respectively wrapped around the first rollers and the second rollers, and the conveyor belts are used to clamp the bag opening.

[0008] Furthermore, the clamping and conveying mechanism includes a first motor, which is fixed on the top surface of the bearing plate, and the output end of the first motor passes through a sleeve and is respectively connected to the first roller and the second roller.

[0009] Furthermore, a placement box is provided on the top surface of the first clamping plate. The placement box is a box body with a side surface and a half-open top surface, and a plurality of cardboards are placed in the placement box.

[0010] Furthermore, a through hole is provided on the top surface of the placement box, and a pressing shaft is provided to pass through the through hole and press against the paperboard.

[0011] Furthermore, a feeding structure is provided below the folding mechanism, and the feeding structure includes a second motor, two rotating shafts and a conveyor belt. The output end of the second motor is drivingly connected to one of the rotating shafts, and the conveyor belt is wrapped around the two rotating shafts.

[0012] Furthermore, a baffle is provided on one side above the top surface of the conveyor belt, and the baffle is fixed on the support rod to prevent the woven bag from tipping over to the side.

[0013] In addition, a production line for sealing woven bags is provided, comprising the folding device and a bag sewing machine, wherein the bag sewing machine is arranged on a carrying plate, and the bag sewing machine comprises sealing ends arranged opposite to each other, wherein the sealing ends are arranged on both sides of the outlets of the first folding plate and the second folding plate, and are used for sealing the bag opening of the woven bag after folding.

[0014] Compared with the prior art: The present invention provides a folding device, which folds the bag mouth passing through the gap between the first folding plate and the second folding plate through a guide member, and adjusts the size of the gap through an elastic member to ensure that the folding process of the bag mouth is carried out smoothly, avoiding the folding of the bag mouth due to the gap being too large or too small, the folding effect is better, and the sealing quality of the bag mouth after folding is improved. After the bag mouth of the woven bag is folded, the bag mouth is sealed through a production line for sealing the woven bag, and the sealing effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a perspective view of the present invention.

[0016] Figure 2 The present invention Figure 1 Enlarged view of point A in the middle.

[0017] Figure 3 It is a stereogram from another viewing angle of the present invention. DETAILED DESCRIPTION

[0018] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0019] See also Figure 1 A folding device includes a frame 10 and a folding mechanism 20 arranged on the frame 10, the frame 10 includes a support rod 11, a carrier plate 12 connected to the side of the support rod 11, and a sleeve 13 fixed to the bottom surface of the carrier plate 12. The folding mechanism 20 includes a first clamping plate 21, a second clamping plate 22, a first folding plate 23, a second folding plate 24 and a guide rod 25, one end of the first clamping plate 21 is hinged on a sleeve 13 thereof, one end of the second clamping plate 22 is fixed on another sleeve 13, and a feed port is formed between the other ends of the first clamping plate 21 and the second clamping plate 22.

[0020] The first folding plate 23 is vertically arranged on the top surface of the first clamping plate 21, and the second folding plate 24 is vertically arranged on the top surface of the second clamping plate 22, and a gap is formed between the first folding plate 23 and the second folding plate 24. In this embodiment, the top of the second folding plate 24 is lower than the lower top of the first folding plate 23, and one end of the guide rod 25 is fixed on the first folding plate 23, and the end crosses the top of the second folding plate 24 and extends obliquely downward to one side of the second folding plate 24. When the bag mouth of the woven bag enters the gap between the first folding plate 23 and the second folding plate 24, the guide rod 25 guides the bag mouth to bend to one side of the second folding plate 24.

[0021] The first clamping plate 21 and the second clamping plate 22 are connected by an elastic structure 30, which includes a first rod 31, a second rod 32 and an elastic member 33. One end of the first rod 31 is upright on the top surface of the first clamping plate 21, and the other end is connected to a roller 34. The roller 34 is rollably arranged on the top surface of the carrier plate 12. One end of the second rod 32 is upright and fixed on the top of the second clamping plate 22, and the other end is connected to the carrier plate 12. The elastic member 33 is connected between the first rod 31 and the second rod 32. When the bag mouth enters the gap from the feed port, the first clamping plate 21 swings around the sleeve 13 to overcome the elastic force of the elastic member 33, and the roller 34 rolls on the top surface of the carrier plate 12 at the same time, so as to adjust the size of the gap between the first folding plate 23 and the second folding plate 24, so as to ensure that the folding process of the bag mouth proceeds smoothly.

[0022] The first folding plate 23 and the second folding plate 24 are respectively bent to one side at one end of the feed port to guide the woven bag opening to enter. The side of the first folding plate 23 is connected to the top plate 26, and the bottom side of the top plate 26 is connected to the third folding plate 27. The third folding plate 27 is arranged on the side of the second folding plate 24 relative to the gap, and one end of the third folding plate 27 is arranged on the end of the guide rod 25. The bag opening is bent through the guide rod 25, and the bent bag opening enters between the second folding plate 24 and the third folding plate 27 at the end of the guide rod 25. The third folding plate 27 prevents the belt surface from rising after bending, and further folds the bag opening, and the folding effect is good.

[0023] A clamping and conveying mechanism 40 is provided in the gap, and the clamping and conveying mechanism 40 includes a plurality of first rollers 41, a plurality of second rollers 42 and two conveyor belts 43. The first rollers 41 and the second rollers 42 are respectively arranged at the bottom ends of the first clamping plate 21 and the second clamping plate 22, and the conveyor belts 43 are respectively wrapped around the first rollers 41 and the second rollers 42, and the conveyor belts 43 are used to clamp and convey the bag opening. The clamping and conveying mechanism 40 includes a first motor 44, and the first motor 44 is fixed on the top surface of the carrier plate 12. The output end of the first motor 44 passes through the sleeve 13 and is respectively connected to the first roller 41 and the second roller 42 for transmission, so as to drive the conveyor belts 43 on the first roller 41 and the second roller 42 to clamp and convey the bag opening, so that the bag opening is folded when it continuously passes through the gap between the first folding plate 23 and the second folding plate 24.

[0024] See also Figure 2A placement box 50 is provided on the top surface of the first clamping plate 21. In this embodiment, the placement box 50 is a box body with a half-open side and top surface. A number of cardboards 51 are placed in the placement box 50. Because the woven bag material is relatively soft, when the bag mouth of the woven bag is bent, the cardboard 51 is used to fit on the soft side of the bag mouth, so that the bag mouth can be guided by the guide rod 25 to be bent more smoothly. A through hole is opened on the top surface of the placement box 50, and a pressing shaft 52 is provided to pass through the through hole and press against the cardboard 51 to prevent the cardboard 51 from moving and falling due to machine vibration or human factors.

[0025] See also Figure 1 A feeding structure 60 is provided below the folding mechanism 20, and the feeding structure 60 includes a second motor 61, two rotating shafts 62 and a conveyor belt 63. The output end of the second motor 61 is transmission-connected with one of the rotating shafts 62, and the conveyor belt 63 is wrapped around the two rotating shafts 62, so that when the second motor 61 drives the rotating shaft 62 to rotate, the conveyor belt 63 transports the woven bag, and at the same time, the bag opening of the woven bag enters into the gap between the first folding plate 23 and the second folding plate 24 through the feed port, and the bag opening is guided and bent to one side of the second folding plate 24 by the guide rod 25.

[0026] See also Figure 2 A baffle 70 is provided on one side above the top surface of the conveyor belt 63 , and the baffle 70 is fixed on the support rod 11 to prevent the woven bag from tipping over to the side.

[0027] In addition, a production line for sealing woven bags is provided, including the folding device and a sewing machine 80, wherein the sewing machine 80 is arranged on the supporting plate 12, and the sewing machine 80 includes relatively arranged sealing ends 81, wherein the sealing ends 81 are arranged on both sides of the outlets of the first folding plate 23 and the second folding plate 24, and are used to seal the bag mouth of the woven bag after folding.

[0028] The method of using the present invention is as follows: Please refer to Figure 1 , Figure 2 and Figure 3, start the second motor 61 to drive the conveyor belt 63 to rotate, place the bag body of the woven bag on the conveyor belt 63, and at the same time align the bag opening with the gap between the first folding plate 23 and the second folding plate 24; after the bag opening enters between the first clamping plate 21 and the second clamping plate 22 from the feed inlet, the first motor 44 is started to drive the first roller 41 and the second roller 42 to rotate, driving the bag opening to pass through the gap. In this process, take a piece of cardboard 51 and stick it to the side of the bag opening at the feed inlet. When the cardboard 51 and the bag opening pass through the gap together, the first clamping plate 21 overcomes the elastic force of the elastic member 33. The force swings around the sleeve 13, and the roller 34 rolls on the top surface of the carrying plate 12 at the same time to adjust the size of the gap between the first folding plate 23 and the second folding plate 24. At the same time, the guide rod 25 presses the cardboard 51 and the bag opening against the folding, and presses the folded bag opening against the side of the second folding plate 24 opposite to the gap; the bag opening continues to be transported forward and enters between the second folding plate 24 and the third folding plate 27 for further folding; when the folded bag opening is transported forward to between the two sealing ends 81 of the bag sewing machine 80, the two sealing ends 81 seal the folded woven bag opening.

[0029] In summary, the present invention folds the bag mouth passing through the gap between the first folding plate 23 and the second folding plate 24 through a guide member, and adjusts the size of the gap through an elastic member 33 to ensure that the folding process of the bag mouth is carried out smoothly, and avoids the folding of the bag mouth due to the gap being too large or too small. The folding effect is better and the sealing quality of the bag mouth after folding is improved; the bag mouth is then sealed through a production line for sealing woven bags, and the sealing effect is good.

[0030] As long as it does not violate the creative ideas of the present invention, any combination of the various embodiments of the present invention shall be regarded as the contents disclosed by the present invention; within the technical concept of the present invention, any combination of various simple modifications of the technical scheme and different embodiments that does not violate the creative ideas of the present invention shall be within the protection scope of the present invention.

Claims

1. A folding device, comprising a frame (10) and a folding mechanism (20) arranged on the frame (10), characterized in that: The frame (10) comprises a support rod (11), a bearing plate (12) connected to the side of the support rod (11) and two sleeves (13) fixed to the bottom surface of the bearing plate (12); the folding mechanism (20) comprises a first clamping plate (21), a second clamping plate (22), a first folding plate (23), a second folding plate (24) and a guide rod (25); one end of the first clamping plate (21) is hinged on one sleeve (13); one end of the second clamping plate (22) is fixed on the other sleeve (13); and the first folding plate (23) is hinged on the second sleeve (13). A feed port is formed between the other end of the first clamping plate (21) and the other end of the second clamping plate (22); a first folding plate (23) is vertically arranged on the top surface of the first clamping plate (21); a second folding plate (24) is vertically arranged on the top surface of the second clamping plate (22); a gap is formed between the first folding plate (23) and the second folding plate (24); one end of the guide rod (25) is fixed on the first folding plate (23); the other end crosses the top end of the second folding plate (24) and extends obliquely downward to the second folding plate (24). When the bag opening of the woven bag enters the gap between the first folding plate (23) and the second folding plate (24), the guide rod (25) guides the bag opening to bend to the side of the second folding plate (24). The first clamping plate (21) and the second clamping plate (22) are connected by an elastic structure (30). The elastic structure (30) includes a first rod body (31), a second rod body (32) and an elastic member (33). One end of the first rod body (31) is upright on the top surface of the first clamping plate (21), and the other end is connected to a roller ( 34), the roller (34) is rotatably arranged on the top surface of the carrier plate (12), one end of the second rod body (32) is upright and fixed on the top of the second clamping plate (22), and the other end is connected to the carrier plate (12), and the elastic member (33) is connected between the first rod body (31) and the second rod body (32), so that when the bag mouth enters the clamping gap from the feed port, the first clamping plate (21) overcomes the elastic force of the elastic member (33) and swings around the sleeve (13), and the roller (34) rolls on the top surface of the carrier plate (12); The top end of the second folding plate (24) is lower than the top end of the first folding plate (23); The side surface of the first folding plate (23) is connected to a top plate (26), and the bottom surface of the top plate (26) is connected to a third folding plate (27). The third folding plate (27) is arranged on a side of the second folding plate (24) opposite to the gap, and one end of the third folding plate (27) is arranged on a side of the end of the guide rod (25); A placement box (50) is provided on the top surface of the first clamping plate (21). The placement box (50) is a box body with a half-open side surface and a half-open top surface. A plurality of paperboards (51) are placed in the placement box (50).

2. The folding device according to claim 1, characterized in that: The first folding plate (23) and the second folding plate (24) are respectively bent to one side at one end of the feed inlet to guide the woven bag opening to enter.

3. The folding device according to claim 1, characterized in that: A clamping and conveying mechanism (40) is provided in the clamping gap. The clamping and conveying mechanism (40) comprises a plurality of first rollers (41), a plurality of second rollers (42) and two conveyor belts (43). The first rollers (41) and the second rollers (42) are respectively arranged at the bottom ends of the first clamping plate (21) and the second clamping plate (22). The conveyor belts (43) are respectively wrapped around the first rollers (41) and the second rollers (42). The conveyor belts (43) are used for clamping and conveying the bag opening.

4. The folding device according to claim 3, characterized in that: The clamping and conveying mechanism (40) comprises a first motor (44), which is fixed on the top surface of the bearing plate (12), and the output end of the first motor (44) passes through the sleeve (13) and is respectively connected to the first roller (41) and the second roller (42) for transmission.

5. The folding device according to claim 1, characterized in that: A through hole is provided on the top surface of the placement box (50), and a pressing shaft (52) is provided to pass through the through hole and press against the paperboard (51).

6. The folding device according to claim 1, characterized in that: A feeding structure (60) is provided below the folding mechanism (20), and the feeding structure (60) comprises a second motor (61), two rotating shafts (62) and a conveyor belt (63). The output end of the second motor (61) is drivingly connected to one of the rotating shafts (62), and the conveyor belt (63) is wound around the two rotating shafts (62).

7. The folding device according to claim 6, characterized in that: A baffle (70) is provided on one side above the top surface of the conveyor belt (63), and the baffle (70) is fixed on the support rod (11) to prevent the woven bag from tipping over to the side.

8. A production line for sealing woven bags, comprising the folding device according to any one of claims 1 to 7; and also comprising a bag sewing machine (80), characterized in that: The bag sewing machine (80) is arranged on the carrying plate (12), and comprises sealing ends (81) arranged opposite to each other. The sealing ends (81) are arranged on both sides of the outlets of the first folding plate (23) and the second folding plate (24), and are used to seal the bag mouth of the woven bag after folding.

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