Folding mechanism for handle part of plastic bag

Abstract

The utility model discloses a plastic bag handle folding mechanism, which relates to the field of plastic bag folding and comprises a bag supporting unit, a bag pressing unit, a lug folding unit and two parallel side plates, and a mounting plate and a connecting plate are sequentially mounted between the two side plates from left to right. The bag supporting unit comprises an overturning shell, a common base, a driving assembly and two third air cylinders. The inner portion of the overturning shell is hollow, the bottom of the overturning shell is open, swing arms are welded to the front side and the rear side of the overturning shell respectively, and one end of each swing arm is hinged to the corresponding side plate. And then the two lug folding plates in one group get close to each other, the hand lifting part of the plastic bag clamped between the bag pressing piece and the bag supporting plate is rapidly folded, the folding speed is high, and the production efficiency of the plastic bag is improved.

Description

Technical Field

[0001] The utility model belongs to the field of plastic bag folding, and particularly relates to a folding mechanism for the handle part of a plastic bag. Background Art

[0002] A plastic bag is a common household item used to hold other items.

[0003] A plastic bag is a bag made of a thin and combustible plastic film, and is widely used due to its advantages such as low cost, extremely light weight, large capacity, and convenient storage.

[0004] As disclosed in Chinese Patent CN 219905016U, a folding mechanism for the ear of a packaging bag includes a mounting frame, on which more than one group of support plates are adjustably arranged. At the end of each group of two support plates, inclined slopes are provided, and the two slopes form an outward-expanding eight-shaped structure; two folding plates are slidably arranged on the mounting frame below the support plates. Each folding plate has a U-shaped structure, and the two folding plates are arranged in a vertically staggered manner.

[0005] In the actual use process of this folding mechanism for the ear of a packaging bag, when folding the ear of the packaging bag, the folding speed is slow, which affects the production efficiency of plastic bags.

[0006] Therefore, we propose a folding mechanism for the handle part of a plastic bag to solve the above problems. Content of the Utility Model

[0007] Aiming at the problem that in the actual use process of this folding mechanism for the ear of a packaging bag, when folding the ear of the packaging bag, the folding speed is slow, which affects the production efficiency of plastic bags, the utility model provides a folding mechanism for the handle part of a plastic bag.

[0008] The solution adopted by the utility model to solve its technical problems is: a folding mechanism for the handle part of a plastic bag, including a bag supporting unit, a bag pressing unit, an ear folding unit, and two parallel side plates. An installation plate and a connecting plate are sequentially installed between the two side plates from left to right;

[0009] The bag supporting unit includes a flipping shell, a common seat, a driving component, and two groups of cylinder threes;

[0010] The inside of the flipping shell is hollow, and its bottom is open. Swing arms are welded on the front and back sides of the flipping shell, and one end of each swing arm is hinged to the side plate;

[0011] The two groups of cylinder threes are respectively arranged below the two swing arms, and the upper and lower ends of the cylinder three are respectively hinged to the swing arm and the side plate;

[0012] Two notches are formed in the right side wall of the flipping housing. A common seat is disposed in the flipping housing. Two bag supporting plates are mounted on one side of the common seat and are respectively disposed in the two notches.

[0013] A driving assembly is mounted at the bottom of the flipping housing and is connected to the common seat for driving the common seat and the two bag supporting plates to move left and right.

[0014] The bag pressing unit includes a multi-axis cylinder, an L-shaped seat and a first cylinder. One end of the multi-axis cylinder is hinged and mounted on the side surface of the connecting plate. The other end thereof is fixedly mounted with a mounting arm. Two bag pressing pieces are mounted on the left side surface of the mounting arm and are respectively arranged corresponding to the two bag supporting plates.

[0015] The top end of the L-shaped seat is fixedly mounted at the bottom of the mounting plate. The upper and lower ends of the first cylinder are respectively hinged to the multi-axis cylinder and the L-shaped seat.

[0016] The folding ear unit includes two swing rods, two groups of second cylinders and four support shafts. The four support shafts are symmetrically arranged in two groups, one in front of the other. A first bearing is sleeved at the bottom end of each support shaft, and the first bearing is mounted on the mounting plate. A swing block and a folding ear plate are sequentially mounted on each support shaft. The folding ear plate is located above the swing block and below the bag pressing piece.

[0017] The two swing rods are arranged in parallel on the left and right sides of the support shafts. The front and rear ends of each swing rod are respectively hinged to two corresponding swing blocks.

[0018] The two groups of second cylinders respectively correspond to the two swing rods and are arranged one in front of the other. One end of each second cylinder is hinged to the mounting plate through a second pin shaft, and the other end thereof is hinged to the swing block.

[0019] Preferably, the top view of the bag pressing piece is mountain-shaped.

[0020] Preferably, two through holes are formed in the common seat.

[0021] Preferably, two guide rods are further included. The guide rods pass through the through holes and are fixedly mounted in the flipping housing. A sliding sleeve is slidably arranged on each guide rod, and the sliding sleeve is fixedly mounted on the side surface of the common seat.

[0022] Preferably, the driving assembly includes two rotating shafts and a motor seat. Second bearings are respectively sleeved at the top ends of the two rotating shafts. The second bearings are mounted at the bottom of the flipping housing. Synchronous wheels are sleeved on the rotating shafts. The two synchronous wheels are connected by the same synchronous belt. The synchronous belt is connected to the common seat through a connecting block. The motor seat is mounted at the bottom of the flipping housing. A driving motor is mounted on the motor seat, and the output shaft of the driving motor is connected to the corresponding rotating shaft.

[0023] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0024] 1. By controlling the synchronous operation of two sets of cylinder two, under the connection action of the swing rod, the four folding ear plates move synchronously in pairs, and then the two folding ear plates in one group approach each other, quickly folding the plastic bag handle part clamped between the pressing bag piece and the bag supporting plate, with a fast folding speed and improved production efficiency of the plastic bag.

[0025] 2. By starting the driving motor, the driving motor drives the forward rotation of the rotating shaft and the synchronous pulley. During the rotation of the synchronous pulley, the synchronous belt is driven to rotate. The synchronous belt drives the common seat and two bag supporting plates to move to the right through the connecting block, and then the bag supporting plates extend out from the notch, so as to support the neatly arranged plastic bag.

[0026] 3. By controlling the elongation of the multi-axis cylinder, the two pressing bag pieces are respectively corresponding to two groups of plastic bags. By controlling the contraction of cylinder one, the multi-axis cylinder, the mounting arm and the two pressing bag pieces move downward, and then the pressing bag pieces press down and fix the plastic bag to ensure the stability of the plastic bag handle part during the folding process.

[0027] 4. By controlling the synchronous contraction of two sets of cylinder three, the flipping shell is flipped downward, so that the plastic bag grabbing mechanism can grab the folded plastic bag and perform the next folding of the plastic bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic top view structure diagram of the present utility model;

[0029] Figure 2 is a schematic top view structure diagram of the bag supporting unit of the present utility model;

[0030] Figure 3 is a schematic bottom view structure diagram of the flipping shell of the present utility model;

[0031] Figure 4 is a schematic front sectional view structure diagram of the bag supporting unit of the present utility model;

[0032] Figure 5 is a schematic top view structure diagram of the bag ear folding unit of the present utility model;

[0033] Figure 6 is a schematic top view structure diagram of the swing rod and the swing block of the present utility model;

[0034] Figure 7 is a schematic front sectional view structure diagram of the pressing bag unit of the present utility model.

[0035] In the figure: 1 side plate, 2 connecting plate, 3 mounting plate, 41 hinge seat, 42 fixed ear, 43 multi-axis cylinder, 44 mounting arm, 45 bag pressing piece, 46 L-shaped seat, 47 cylinder one, 48 hinge ear, 51 cylinder two, 52 swing block, 53 swing rod, 54 pin one, 55 pin two, 56 support shaft, 57 folding ear plate, 61 flipping housing, 62 bag supporting plate, 63 pin three, 64 pin four, 65 cylinder three, 66 swing arm, 67 pin five, 68 common seat, 71 synchronous pulley, 72 driving motor, 73 motor seat, 74 synchronous belt, 75 rotating shaft, 76 connecting block, 81 guide rod, 82 sliding sleeve. Detailed implementation manner

[0036] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] Please refer to Figures 1-7 , the present utility model provides a technical solution for a folding mechanism of the handle part of a plastic bag:

[0038] Embodiment 1:

[0039] According to Figures 1-7 shown, it includes a bag supporting unit, a bag pressing unit, a folding ear unit and two parallel side plates 1. An installation plate 3 and a connecting plate 2 are sequentially installed between the two side plates 1 from left to right.

[0040] The bag supporting unit includes a flipping housing 61, a common seat 68, a driving assembly and two groups of cylinders three 65;

[0041] The inside of the flipping housing 61 is hollow, and its bottom is open. Swing arms 66 are welded on the front and rear sides of the flipping housing 61 respectively. One end of the swing arm 66 is hinged and installed on the side plate 1 through a pin five 67, so that the flipping housing 61 can flip a certain angle.

[0042] The two groups of cylinders three 65 are respectively arranged below the two swing arms 66. The upper and lower ends of the cylinder three 65 are respectively hinged to the swing arm 66 and the side plate 1 through a pin three 63 and a pin four 64. By controlling the synchronous elongation of the two groups of cylinders three 65, the flipping angle of the flipping housing 61 is controlled.

[0043] Two notches are opened on the right side wall of the flipping housing 61. The common seat 68 is arranged inside the flipping housing 61. Two bag supporting plates 62 are installed on one side of the common seat 68, so that the common seat 68 can drive the two bag supporting plates 62 to move synchronously. The two bag supporting plates 62 are respectively arranged in the two notches, and two through holes are opened on the common seat 68.

[0044] It also includes two guide rods 81, which pass through the through holes and are fixedly installed in the flip shell 61. A sliding sleeve 82 is slidably arranged on the guide rod 81, and the sliding sleeve 82 is fixedly installed on the side of the common seat 68. The common seat 68 is supported and guided by the guide rod 81 and the sliding sleeve 82, thereby improving the stability of the common seat 68 during movement.

[0045] The driving assembly includes two rotating shafts 75 and a motor seat 73. The top ends of the two rotating shafts 75 are respectively provided with bearings 2, and the bearings 2 are installed at the bottom of the flip shell 61. The rotating shaft 75 is provided with a synchronous wheel 71. The two synchronous wheels 71 are connected through the same synchronous belt 74. The synchronous belt 74 is connected to the common seat 68 through a connecting block 76. The motor seat 73 is installed at the bottom of the flip shell 61. A driving motor 72 is installed on the motor seat 73. The output shaft of the driving motor 72 is connected to the corresponding rotating shaft 75. By starting the driving motor 72, the driving motor 72 drives the rotating shaft 75 and the synchronous wheel 71 to rotate. The synchronous wheel 71 drives the synchronous belt 74 to rotate during the rotation process. The synchronous belt 74 drives the common seat 68 and the two bag supporting plates 62 to move left or right through the connecting block 76.

[0046] The bag pressing unit includes a multi-axis cylinder 43, an L-shaped seat 46 and a cylinder 47. A fixing ear 42 is fixedly installed on one end of the multi-axis cylinder 43. The fixing ear 42 is hingedly installed in the hinge seat 41 through a pin shaft. The hinge seat 41 is fixedly installed on the side of the connecting plate 2. A mounting arm 44 is fixedly installed on the other end of the multi-axis cylinder 43. Two bag pressing plates 45 are installed on the left side of the mounting arm 44. The top view of the bag pressing plate 45 is in a mountain shape. The two bag pressing plates 45 are respectively arranged corresponding to the two bag supporting plates 62.

[0047] The top of the L-shaped seat 46 is fixedly mounted on the bottom of the mounting plate 3, and the upper and lower ends of the cylinder 47 are respectively hinged to the hinged ear 48 and the L-shaped seat 46 through the pin shaft 7. The hinged ear 48 is fixedly mounted on the bottom of the multi-axis cylinder 43. By controlling the contraction of the cylinder 47, the multi-axis cylinder 43, the mounting arm 44 and the two bag pressing sheets 45 move downward, and then the bag pressing sheets 45 press down and fix the plastic bag to ensure the stability of the handle of the plastic bag during the folding process.

[0048] The folding ear unit includes two rocker arms 53, two groups of cylinders 2 51 and four support shafts 56. The four support shafts 56 are symmetrically arranged in groups of two, one in front and one behind. The bottom end of the support shaft 56 is provided with a bearing 1, which is installed on the mounting plate 3 so that the support shaft 56 can rotate stably. The support shaft 56 is sequentially installed with a rocker block 52 and a folding ear plate 57. The folding ear plate 57 is located above the rocker block 52 and below the bag pressing sheet 45.

[0049] Two swing rods 53 are arranged in parallel on the left and right sides of the support shaft 56 , and the front and rear ends of the swing rod 53 are respectively hinged to the two corresponding swing blocks 52 through a pin 54 .

[0050] Two sets of the second cylinders 51 respectively correspond to two swing rods 53, and are arranged one in front and the other behind. One end of the second cylinder 51 is hinged to the mounting plate 3 through the second pin shaft 55, and the other end thereof is hinged to the swing block 52 through the first pin shaft 54. By controlling the synchronous operation of the two sets of the second cylinders 51, under the connection action of the swing rods 53, the four folding ear plates 57 move synchronously in pairs of two, and then the two folding ear plates 57 in one group approach each other, so as to quickly fold the plastic bag handle part clamped between the pressing bag piece 45 and the bag supporting plate 62. The folding speed is fast, and the production efficiency of the plastic bag is improved.

[0051] In specific use, for a folding mechanism of a plastic bag handle part of the present utility model, first, control the synchronous elongation of the two sets of the third cylinders 65 to turn the flipping housing 61 upwards. Then, start the driving motor 72, and the driving motor 72 drives the forward rotation of the rotating shaft 75 and the synchronous pulley 71. During the rotation of the synchronous pulley 71, the synchronous belt 74 is driven to rotate, and the synchronous belt 74 drives the common seat 68 and the two bag supporting plates 62 to move rightwards through the connecting block 76, and then the bag supporting plates 62 extend out from the notch.

[0052] After the bag supporting plates 62 extend out, the driving motor 72 stops working. The picking mechanism picks up a certain number of plastic bags sorted in the previous process onto the bag supporting plates 62, and then controls the elongation of the multi-axis cylinder 43 to make the two pressing bag pieces 45 respectively correspond to the two groups of plastic bags. Then, control the contraction of the first cylinder 47 to make the multi-axis cylinder 43, the mounting arm 44 and the two pressing bag pieces 45 move downwards, and then the pressing bag pieces 45 press down and fix the plastic bags.

[0053] Control the synchronous operation of the two sets of the second cylinders 51. Under the connection action of the swing rods 53, the four folding ear plates 57 move synchronously in pairs of two, and then the two folding ear plates 57 in one group approach each other, so as to quickly fold the plastic bag handle part clamped between the pressing bag piece 45 and the bag supporting plate 62.

[0054] Finally, after the folding is completed, control the reverse rotation of the driving motor 72 to retract the two bag supporting plates 62 into the flipping housing 61. At the same time, control the synchronous contraction of the two sets of the third cylinders 65 to turn the flipping housing 61 downwards, so that the plastic bag gripping mechanism can grab the folded plastic bags and perform the next folding of the plastic bags.

Claims

1. A folding mechanism for the handle part of a plastic bag, characterized in that: It includes a bag holding unit, a bag pressing unit, an ear folding unit and two parallel side panels, and a mounting plate and a connecting plate are sequentially installed between the two side panels from left to right; The bag holding unit comprises a flip shell, a common seat, a driving assembly and two sets of cylinders; The interior of the flip shell is hollow, and the bottom is open. Swing arms are welded on the front and rear sides of the flip shell, and one end of the swing arm is hingedly mounted on the side plate. Two groups of cylinders three are respectively arranged under the two swing arms, and the upper and lower ends of the cylinders three are respectively hinged to the swing arms and the side plates; The right side wall of the flip shell is provided with two notches, and a common seat is arranged in the flip shell. Two bag holding plates are installed on one side of the common seat, and the two bag holding plates are respectively arranged in the two notches; The driving assembly is installed at the bottom of the flip shell and connected to the common seat, and is used to drive the common seat and the two bag-carrying plates to move left and right; The bag pressing unit includes a multi-axis cylinder, an L-shaped seat and a cylinder 1. One end of the multi-axis cylinder is hingedly mounted on the side of the connecting plate, and the other end is fixedly mounted with a mounting arm. Two bag pressing sheets are mounted on the left side of the mounting arm, and the two bag pressing sheets are respectively arranged corresponding to the two bag supporting plates. The top of the L-shaped seat is fixedly mounted on the bottom of the mounting plate, and the upper and lower ends of the cylinder one are respectively hinged to the multi-axis cylinder and the L-shaped seat; The folding ear unit includes two swing rods, two groups of cylinders 2 and four supporting shafts. The four supporting shafts are arranged symmetrically in groups of two, one in front and one in the back. The bottom end of the supporting shaft is sleeved with a bearing 1, which is mounted on a mounting plate. The supporting shaft is sequentially mounted with a swing block and a folding ear plate, and the folding ear plate is located above the swing block and below the bag pressing sheet. Two swing rods are arranged in parallel on the left and right sides of the support shaft, and the front and rear ends of the swing rods are respectively hinged to two corresponding swing blocks; The two groups of cylinders 2 correspond to two swing rods respectively and are arranged one in front and one behind. One end of the cylinder 2 is hinged to the mounting plate through the pin shaft 2, and the other end is hinged to the swing block.

2. The folding mechanism for the plastic bag handle according to claim 1, characterized in that: The top view of the bag pressing sheet is in the shape of a mountain.

3. The plastic bag handle folding mechanism according to claim 1, characterized in that: The common seat is provided with two through holes.

4. The folding mechanism for the plastic bag handle part according to claim 3, characterized in that: The utility model also comprises two guide rods, which are passed through the through holes and fixedly installed in the flip shell body, and a sliding sleeve is slidably arranged on the guide rods, and the sliding sleeve is fixedly installed on the side of the common seat.

5. The folding mechanism of the plastic bag handle according to claim 4, characterized in that: The driving assembly includes two rotating shafts and a motor seat. The top ends of the two rotating shafts are respectively provided with bearings 2, and the bearings 2 are installed at the bottom of the flip shell. The rotating shafts are provided with synchronous wheels. The two synchronous wheels are connected through the same synchronous belt transmission. The synchronous belt is connected to the common seat through a connecting block. The motor seat is installed at the bottom of the flip shell. A driving motor is installed on the motor seat, and the output shaft of the driving motor is connected to the corresponding rotating shaft.

Images