Automatic edge folding device for polypropylene film ton bag production

Abstract

The utility model relates to the technical field of plastic product manufacturing, in particular to an automatic edge folding device for polypropylene film ton bag production, which comprises a bottom plate, supports are fixedly connected to the tops of four corners of the bottom plate, a top plate is fixedly connected to the tops of the supports, a hydraulic rod is mounted at the top of the top plate, and pressing assemblies are arranged on two sides of a pressing plate. Mounting plates are fixedly connected to the two sides of the bottom plate, electric push rods are mounted at the tops of the mounting plates, push plates are arranged on the sides, close to the center of the bottom plate, of the electric push rods, heating plates are fixedly connected to the sides, close to the center of the bottom plate, of the push plates, and adjusting assemblies are arranged between the push plates and the electric push rods. According to the ton bag edge folding device, the ton bag can be tightly pressed in the edge folding process, the situation that the edge folding effect is affected due to wrinkling of the ton bag is effectively avoided, the ton bag can be subjected to edge folding at different angles by adjusting the angles of the push plate and the heating plate, and the application range is wider.

Description

Technical Field

[0001] This utility model relates to the field of plastic product manufacturing technology, and in particular to an automatic folding device for producing polypropylene film ton bags. Background Technology

[0002] Polypropylene film ton bags are large packaging containers made primarily of polypropylene film. They are rectangular or cylindrical in shape and have a large capacity to hold one ton or more of goods. Their structure includes the bag body, lifting straps, inlet and outlet. The bag body is made of multiple layers of polypropylene film through extrusion and other processes to improve strength and toughness. They are widely used in the field of industrial product packaging and can be used to package various materials such as chemical raw materials, plastic granules, and fertilizers.

[0003] In the production of ton bags, a folding device is needed to fold the edges. National patent application CN218084468U discloses a folding device for producing ton bags. The device features a "base plate with a placement groove on its top surface. A placement plate is placed within the groove, and the bottom surface of the placement plate is connected to the groove by several evenly distributed springs. Connecting plates are installed on both sides of the top surface of the base plate. Each connecting plate has a connecting block installed on one side via a first telescopic rod. A heating plate is installed on the bottom surface of each connecting block, and vertical rods are installed at the four corners of the top surface of the base plate." The advantages of this invention are: simple structure, easy to use, and improved power through the first telescopic rod. The combination of the connecting block and the heating plate enables the folding of ton bags, thereby reducing the physical labor of operators, reducing folding time, improving folding efficiency, and making folding of ton bags more convenient. Although the prior art achieves automation of folding, its structure is relatively simple. During the folding process, it cannot press the part of the ton bag that needs to be folded, which will cause wrinkles in the ton bag and affect the folding effect. Moreover, it cannot adjust the angle of the connecting block and the heating plate, so the device cannot fold the ton bag at different angles. Therefore, this application proposes an automatic folding device for polypropylene film ton bag production to meet the requirements. Utility Model Content

[0004] In order to overcome the shortcomings of existing devices, such as wrinkling at the folded edge of the ton bag due to insufficient compression and inability to fold the ton bag at different angles, this utility model provides an automatic folding device for the production of polypropylene film ton bags.

[0005] The technical implementation scheme of this utility model is as follows: an automatic folding device for producing polypropylene film ton bags, comprising a base plate, brackets fixedly connected to the top of each of the four corners of the base plate, a top plate fixedly connected to the top of each bracket, a hydraulic rod installed on the top of the top plate, a pressure plate fixedly connected to the drive shaft of the hydraulic rod below the top plate, pressing components on both sides of the pressure plate, mounting plates fixedly connected to both sides of the base plate, an electric push rod installed on the top of the mounting plate, a push plate on the side of the electric push rod near the center of the base plate, a heating plate fixedly connected to the side of the push plate near the center of the base plate, and an adjustment component between the push plate and the electric push rod.

[0006] Optionally, the clamping assembly includes a pressure strip, a mounting base, an adjusting groove, a connecting plate, fixing holes, a through groove, and a fixing rod. The pressure strip is provided in two sets and is located on both sides of the pressure plate. The mounting base is fixedly connected to both sides of the top of the pressure plate. The connecting plate is L-shaped and fixedly connected to the inner side of the pressure strip. The adjusting groove passes through the mounting base and the connecting plate is slidably connected to the adjusting groove. The fixing holes are provided in several sets and pass through the connecting plate. The through groove passes through the inner wall of the top of the adjusting groove. The fixing rod is movably connected to the through groove and is adapted to the size of the fixing hole.

[0007] Optionally, the clamping assembly further includes a first slide groove, a first slider, a first spring, and a first pull block. The first slide groove is formed in the inner wall of the through groove. The first slider is fixedly connected to the outer periphery of the fixed rod and slidably connected to the first slide groove. The first spring is sleeved on the outer periphery of the fixed rod and its two ends are respectively fixedly connected to the top of the first slider and the inner wall of the top of the first slide groove. The first pull block is fixedly connected to the top of the fixed rod.

[0008] Optionally, the adjustment assembly includes a mounting block, a slot, a rotating block, a rotating groove, and a rotating shaft. The mounting block is fixedly connected to the drive shaft of the electric push rod. The slot is opened on the side surface of the mounting block near the push plate. The rotating block is fixedly connected to the side of the push plate near the mounting block and movably connected to the slot. The rotating groove is opened on the inner walls of both sides of the slot. The rotating shaft is fixedly connected to both sides of the rotating block and rotatably connected to the rotating groove.

[0009] Optionally, the adjustment assembly further includes a cavity, a second slide groove, a connecting groove, a pull rod, a second slider, and a second spring. The cavity is formed inside a set of rotating shafts. The second slide groove is formed on the inner walls of the top and bottom of the cavity. The connecting groove passes through the inner wall of the set of rotating grooves and communicates with the cavity. The pull rod is movably connected to the connecting groove and extends into the cavity. The second slider is fixedly connected to the inner end of the pull rod and slidably connected to the second slide groove. The second spring is sleeved on the outer periphery of the pull rod and its two ends are respectively fixedly connected to one side of the second slider and one side of the inner wall of the cavity.

[0010] Optionally, the adjustment assembly further includes a slot, a locking block, and a second pull block. The slot is formed on one side surface of the mounting block and is located on the outer periphery of the connecting groove. The locking block is fixedly connected to the outer periphery of the pull rod near the outer end and is adapted to the size of the slot. The second pull block is fixedly connected to the outer end of the pull rod.

[0011] This utility model has the following advantages:

[0012] 1. This utility model is equipped with a pressing component. Pulling the first pull block upward causes it to slide the first slider along the first groove through the fixed rod, thus compressing the first spring. When the fixed rod moves out of the fixed hole, the connecting plate slides along the adjusting groove, causing the pressure strip to move synchronously. When the two sets of pressure strips move to the required folding position of the ton bag, the first pull block is released, the first spring rebounds, and the fixed rod moves downward through the first slider. When the fixed rod is inserted into the fixed hole at the current position, the connecting plate and the pressure strip are fixed in the current position. This design allows the device to perform folding work at different positions of the ton bag by adjusting the position of the pressure strip.

[0013] 2. This utility model features an adjustment component. Pulling the second pull block outward causes it to slide the second slider outward along the second groove via a pull rod, compressing the second spring. When the locking block moves outward with the pull rod and exits the slot, rotating the pull rod causes the second slider to rotate synchronously. The second slider then drives the rotating shaft to rotate synchronously with the pull rod. The rotating shaft, in turn, drives the push plate and heating plate to rotate via a rotating block. When the push plate and heating plate rotate to a suitable angle, releasing the second pull block causes the second spring to rebound and, through the second slider, to move the pull rod inward. When the locking block moves inward with the pull rod and inserts into the slot, the pull rod is fixed at the current angle, thus fixing the push plate and heating plate at the current angle. This design allows the device to perform folding operations on ton bags at different angles by adjusting the angles of the push plate and heating plate. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the clamping component structure of this utility model. Figure 1 ;

[0016] Figure 3 This is a schematic diagram of the clamping component structure of this utility model. Figure 2 ;

[0017] Figure 4 This is a schematic diagram of the push plate connection structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the adjustment component structure of this utility model;

[0019] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0020] The meanings of the reference numerals in the figure are as follows: 1. Base plate; 2. Bracket; 3. Top plate; 4. Hydraulic rod; 5. Pressure plate; 6. Clamping assembly; 61. Pressure strip; 62. Mounting base; 63. Adjustment groove; 64. Connecting plate; 65. Fixing hole; 66. Through groove; 67. Fixing rod; 68. First slide groove; 69. First slider; 610. First spring; 611. First pull block; 7. Mounting plate; 8. Electric push rod; 9. Push plate; 10. Heating plate; 11. Adjustment assembly; 111. Mounting block; 112. Empty groove; 113. Rotating block; 114. Rotating groove; 115. Rotating shaft; 116. Cavity; 117. Second slide groove; 118. Connecting groove; 119. Pull rod; 1110. Second slider; 1111. Second spring; 1112. Slot; 1113. Slot; 1114. Second pull block. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings. It is hereby declared that the terms "up," "down," "left," "right," "front," "back," "inner," and "outer," etc., appearing or about to appear in this document, are based solely on the accompanying drawings and are not intended to specifically limit this utility model.

[0022] An automatic folding device for producing polypropylene film ton bags includes a base plate 1, with brackets 2 fixedly connected to the top of each of the four corners of the base plate 1. A top plate 3 is fixedly connected to the top of the brackets 2. A hydraulic rod 4 is installed on the top of the top plate 3. A pressure plate 5 is fixedly connected to the drive shaft of the hydraulic rod 4 below the top plate 3. A pressing assembly 6 is provided on both sides of the pressure plate 5. Mounting plates 7 are fixedly connected to both sides of the base plate 1. An electric push rod 8 is installed on the top of the mounting plate 7. A push plate 9 is provided on the side of the electric push rod 8 near the center of the base plate 1. A heating plate 10 is fixedly connected to the side of the push plate 9 near the center of the base plate 1. An adjustment assembly 11 is provided between the push plate 9 and the electric push rod 8.

[0023] It should be noted that the pressing component 6 enables the device to press the folded edge of the ton bag during the folding process, preventing wrinkles from affecting the folding effect. The adjusting component 11 enables the device to fold the ton bag at different angles, making it more widely applicable.

[0024] like Figure 2 and Figure 3As shown, the clamping assembly 6 includes a pressure strip 61, a mounting base 62, an adjusting groove 63, a connecting plate 64, fixing holes 65, a through groove 66, and a fixing rod 67. Two sets of pressure strips 61 are provided and are located on both sides of the pressure plate 5. The mounting base 62 is fixedly connected to the top two sides of the pressure plate 5. The connecting plate 64 is L-shaped and fixedly connected to the inner side of the pressure strip 61. The adjusting groove 63 passes through the mounting base 62 and the connecting plate 64 is slidably connected to the adjusting groove 63. Several sets of fixing holes 65 are provided and pass through the connecting plate 64. The through groove 66 passes through the top inner wall of the adjusting groove 63. The fixing rod 67 is movably connected to the through groove 66 and is adapted to the size of the fixing holes 65.

[0025] It should be noted that by removing the fixing rod 67 from the fixing hole 65, the connecting plate 64 can be slid along the adjusting groove 63 to adjust the position of the pressure strip 61. By inserting the fixing rod 67 into the fixing hole 65, the connecting plate 64 and the pressure strip 61 can be fixed in the current position.

[0026] like Figure 3 As shown, the clamping assembly 6 also includes a first slide groove 68, a first slider 69, a first spring 610, and a first pull block 611. The first slide groove 68 is formed in the inner wall of the through groove 66. The first slider 69 is fixedly connected to the outer periphery of the fixed rod 67 and slidably connected to the first slide groove 68. The first spring 610 is sleeved on the outer periphery of the fixed rod 67 and its two ends are respectively fixedly connected to the top of the first slider 69 and the top inner wall of the first slide groove 68. The first pull block 611 is fixedly connected to the top of the fixed rod 67.

[0027] It should be noted that pulling the first pull block 611 upward will cause the first slider 69 to slide upward along the first slide groove 68 via the fixed rod 67 and compress the first spring 610. Releasing the first pull block 611 will cause the first spring 610 to rebound and cause the fixed rod 67 to move downward via the first slider 69.

[0028] like Figure 4 and Figure 5 As shown, the adjustment assembly 11 includes a mounting block 111, a slot 112, a rotating block 113, a rotating groove 114, and a rotating shaft 115. The mounting block 111 is fixedly connected to the drive shaft of the electric push rod 8. The slot 112 is opened on the side surface of the mounting block 111 near the push plate 9. The rotating block 113 is fixedly connected to the side of the push plate 9 near the mounting block 111 and is movably connected to the slot 112. The rotating groove 114 is opened on the inner walls of both sides of the slot 112. The rotating shaft 115 is fixedly connected to both sides of the rotating block 113 and is rotatably connected to the rotating groove 114.

[0029] It should be noted that rotating the rotating shaft 115 along the rotating groove 114 will drive the rotating block 113 to rotate in the empty groove 112, thereby adjusting the angle of the push plate 9 and the heating plate 10.

[0030] like Figure 5 and Figure 6 As shown, the adjustment assembly 11 also includes a cavity 116, a second slide groove 117, a connecting groove 118, a pull rod 119, a second slider 1110, and a second spring 1111. The cavity 116 is opened inside a set of rotating shafts 115. The second slide groove 117 is opened on the inner walls of the top and bottom of the cavity 116. The connecting groove 118 passes through the inner wall of a set of rotating grooves 114 and communicates with the cavity 116. The pull rod 119 is movably connected to the connecting groove 118 and extends into the cavity 116. The second slider 1110 is fixedly connected to the inner end of the pull rod 119 and slidably connected to the second slide groove 117. The second spring 1111 is sleeved on the outer periphery of the pull rod 119 and its two ends are respectively fixedly connected to one side of the second slider 1110 and one side of the inner wall of the cavity 116.

[0031] It should be noted that rotating the pull rod 119 will drive the second slider 1110 to rotate. Since the second slider 1110 is slidably connected to the second slide groove 117 and the second slide groove 117 is opened on the top and bottom inner walls of the cavity 116, the second slider 1110 will drive the rotating shaft 115 to rotate synchronously with the pull rod 119.

[0032] like Figure 5 and Figure 6 As shown, the adjustment component 11 also includes a slot 1112, a block 1113, and a second pull block 1114. The slot 1112 is opened on one side surface of the mounting block 111 and is located on the outer periphery of the connecting groove 118. The block 1113 is fixedly connected to the outer periphery of the pull rod 119 near the outer end and is adapted to the size of the slot 1112. The second pull block 1114 is fixedly connected to the outer end of the pull rod 119.

[0033] It should be noted that the lever 119 can be rotated by removing the locking block 1113 from the slot 1112, and the lever 119 can be fixed at the current angle by inserting the locking block 1113 into the slot 1112.

[0034] In specific application scenarios, when it is necessary to fold the edges of the ton bag, place the ton bag on top of the base plate 1, and then activate the hydraulic rod 4 to move the pressure plate 5 downwards. When the pressure plate 5 contacts the ton bag, the pressure strip 61 will press the ton bag at the position where it needs to be folded. At this time, activate the electric push rod 8 to move the push plate 9 and the heating plate 10 towards the center of the base plate 1. When the push plate 9 and the heating plate 10 contact the ton bag, they will push it upwards. When the push plate 9 moves above the pressure strip 61, activate the heating plate 10, and the ton bag can then be folded. When it is necessary to fold the ton bag at different positions, pull upwards... A pull block 611 causes the first slider 69 to slide upward along the first groove 68 via the fixing rod 67, compressing the first spring 610. When the fixing rod 67 moves out of the fixing hole 65, the connecting plate 64 slides along the adjusting groove 63, causing the pressure strip 61 to move synchronously. When the two sets of pressure strips 61 move to the required folding position of the ton bag, the first pull block 611 is released, the first spring 610 rebounds and drives the fixing rod 67 downward through the first slider 69. When the fixing rod 67 is inserted into the fixing hole 65 at the current position, the connecting plate 64 and the pressure strip 61 are fixed in the current position. At this time, the ton bag can be adjusted. When the bag is being folded at a new position, and different angles are required for folding, the second pull block 1114 is pulled outward, causing it to slide outward along the second slide groove 117 via the pull rod 119, thus compressing the second spring 1111. When the locking block 1113 moves outward with the pull rod 119 and exits from the locking groove 1112, the pull rod 119 is rotated, causing the second sliding block 1110 to rotate synchronously. Since the second sliding block 1110 is slidably connected to the second slide groove 117, and the second slide groove 117 is opened on the top and bottom inner walls of the cavity 116, the second sliding block 1110... 110 will drive the rotating shaft 115 to rotate synchronously with the pull rod 119. The rotating shaft 115 will then drive the push plate 9 and the heating plate 10 to rotate through the rotating block 113. When the push plate 9 and the heating plate 10 rotate to the appropriate angle, the second pull block 1114 will be released. The second spring 1111 will rebound and drive the pull rod 119 to move inward through the second slider 1110. When the locking block 1113 moves inward with the pull rod 119 to the insertion slot 1112, the pull rod 119 can be fixed at the current angle, thereby fixing the push plate 9 and the heating plate 10 at the current angle. At this time, the ton bag can be folded at different angles.

[0035] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An automatic folding device for producing polypropylene film ton bags, comprising a base plate (1), characterized in that, The base plate (1) is fixedly connected to the top of each of its four corners with brackets (2). The top of the brackets (2) is fixedly connected to a top plate (3). A hydraulic rod (4) is installed on the top of the top plate (3). A pressure plate (5) is fixedly connected to the drive shaft of the hydraulic rod (4) below the top plate (3). A pressing assembly (6) is provided on both sides of the pressure plate (5). A mounting plate (7) is fixedly connected to both sides of the base plate (1). An electric push rod (8) is installed on the top of the mounting plate (7). A push plate (9) is provided on the side of the electric push rod (8) near the center of the base plate (1). A heating plate (10) is fixedly connected on the side of the push plate (9) near the center of the base plate (1). An adjustment assembly (11) is provided between the push plate (9) and the electric push rod (8).

2. An automatic folding device for producing polypropylene film ton bags according to claim 1, characterized in that, The clamping assembly (6) includes a pressure strip (61), a mounting base (62), an adjusting groove (63), a connecting plate (64), fixing holes (65), a through groove (66), and a fixing rod (67). The pressure strip (61) is provided in two sets and is located on both sides of the pressure plate (5). The mounting base (62) is fixedly connected to the top two sides of the pressure plate (5). The connecting plate (64) is L-shaped and fixedly connected to the inside of the pressure strip (61). The adjusting groove (63) passes through the mounting base (62) and the connecting plate (64) is slidably connected to the adjusting groove (63). The fixing holes (65) are provided in several sets and pass through the connecting plate (64). The through groove (66) passes through the top inner wall of the adjusting groove (63). The fixing rod (67) is movably connected to the through groove (66) and is adapted to the size of the fixing hole (65).

3. An automatic folding device for producing polypropylene film ton bags according to claim 2, characterized in that, The clamping assembly (6) further includes a first groove (68), a first slider (69), a first spring (610), and a first pull block (611). The first groove (68) is formed on the inner wall of the through groove (66). The first slider (69) is fixedly connected to the outer periphery of the fixed rod (67) and slidably connected to the first groove (68). The first spring (610) is sleeved on the outer periphery of the fixed rod (67) and its two ends are fixedly connected to the top of the first slider (69) and the top inner wall of the first groove (68), respectively. The first pull block (611) is fixedly connected to the top of the fixed rod (67).

4. An automatic folding device for producing polypropylene film ton bags according to claim 1, characterized in that, The adjustment assembly (11) includes a mounting block (111), a slot (112), a rotating block (113), a rotating groove (114), and a rotating shaft (115). The mounting block (111) is fixedly connected to the drive shaft of the electric push rod (8). The slot (112) is opened on the side surface of the mounting block (111) near the push plate (9). The rotating block (113) is fixedly connected to the side of the push plate (9) near the mounting block (111) and movably connected to the slot (112). The rotating groove (114) is opened on the inner walls of both sides of the slot (112). The rotating shaft (115) is fixedly connected to both sides of the rotating block (113) and rotatably connected to the rotating groove (114).

5. An automatic folding device for producing polypropylene film ton bags according to claim 4, characterized in that, The adjustment assembly (11) further includes a cavity (116), a second slide groove (117), a connecting groove (118), a pull rod (119), a second slider (1110), and a second spring (1111). The cavity (116) is opened inside a set of rotating shafts (115). The second slide groove (117) is opened on the inner wall of the top and bottom of the cavity (116). The connecting groove (118) passes through the inner wall of a set of rotating grooves (114) and communicates with the cavity (116). The pull rod (119) is movably connected to the connecting groove (118) and extends into the cavity (116). The second slider (1110) is fixedly connected to the inner end of the pull rod (119) and slidably connected to the second slide groove (117). The second spring (1111) is sleeved on the outer periphery of the pull rod (119) and its two ends are fixedly connected to one side of the second slider (1110) and one side of the inner wall of the cavity (116), respectively.

6. An automatic folding device for producing polypropylene film ton bags according to claim 5, characterized in that, The adjustment component (11) further includes a slot (1112), a block (1113), and a second pull block (1114). The slot (1112) is opened on one side surface of the mounting block (111) and is located on the outer periphery of the connecting groove (118). The block (1113) is fixedly connected to the outer periphery of the pull rod (119) near the outer end and is adapted to the size of the slot (1112). The second pull block (1114) is fixedly connected to the outer end of the pull rod (119).

Images