CN109334110B - Inward folding device for both sides of plastic three-dimensional bag sheets - Google Patents

Abstract

A device for inward folding of both sides of plastic three-dimensional bag sheets. One side of the side inward folding frame (40) is equipped with an edge sealing side pressure plate, and the other side is equipped with a side insert baffle. The upper air suction plate, the middle pressure plate, and the lower air suction plate are installed on the inner folding frame and between the side sealing side pressure plate and the side insert baffle. The socket of the board is equipped with a side insert plate. The side insert plate is connected to the side insert power source through the side insert plate longitudinal axis assembly, and the side insert baffle is connected to the side insert power source through the side insert baffle transverse axis assembly. The upper air suction plate is connected to the upper suction plate. The air plate lifting power source is connected to the upper air suction plate lifting power source, and the upper air suction plate lifting power source is connected to the upper air suction plate transverse power source through the upper air suction plate connecting rod. The invention sequentially completes the fully automatic forming processing work of single-side edge seaming, double-side edge folding, and bottom opening of plastic three-dimensional bag sheets. It enhances the bonding firmness and effective rapid prototyping for subsequent bag making, and improves the speed, stability and yield of three-dimensional bag making.

Description

Inward folding device for both sides of plastic three-dimensional bag sheets

Technical field

The invention relates to packaging machinery, and in particular to a square bottom three-dimensional bag making system.

Background technique

At present, non-woven packaging bags have developed various styles of bags: punch pockets, handbags, vest bags, zipper bags, three-dimensional bags, etc., most of which are produced in high-speed automation. Plastic bags also have square bottom three-dimensional bags, square bottom three-dimensional bags with patches, etc., but except for the semi-automatic operation of the handle and bottom hot-sealing, the rest are all made by hand folding and patching (hard paper patching), and the work The efficiency is low, the labor cost is high, and the molding quality of square bottom plastic three-dimensional bags cannot be guaranteed. It also does not involve the fully automatic processing of single-side positioning and ironing, folding inward folding of both sides, opening the square bottom, folding the square bottom patch in half, and square bottom ironing of plastic three-dimensional bags with patches at the square bottom, which affects the three-dimensional bags. Especially the molding firmness and production efficiency of square bottom plastic three-dimensional bags.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a two-side inward-folding device for plastic three-dimensional bag sheets that can complete the automatic forming process of the two-side inward folding of plastic three-dimensional bag sheets.

The object of the present invention is achieved through the following technical solution: a device for folding both sides of plastic three-dimensional bag sheets, including a side folding frame, and an edge sealing side pressure plate is installed on one side of the side folding frame. The other side is equipped with a side insert baffle, and an upper air suction plate and a middle pressure plate are installed in sequence on the side folding frame and between the side sealing side pressure plate and the side insert baffle. A lower suction plate is installed below the upper air suction plate and the middle pressure plate. A side insert plate is installed on the side folding frame and at the socket of the side insert baffle. The side insert plate passes through the side insert plate. The longitudinal axis assembly and the side insert baffle are respectively connected to the side insert power source through the side insert baffle transverse axis assembly, the side sealing side pressure plate is connected to the side sealing side pressure power source, and the middle pressure plate is connected to the middle pressure plate power source. , the upper suction plate is connected to the upper suction plate lifting power source, and the upper suction plate lifting power source is connected to the upper suction plate transverse power source through the upper suction plate connecting rod.

An auxiliary strip is installed on the side of the upper suction plate. A side pressure plate is installed on the side inward folding frame and above the side sealing side pressure plate, and the side pressure plate is connected to the side pressure plate power source. The upper suction plate, middle pressure plate, and side insert baffle are installed on the side folding frame through side insert transverse guide rails to adapt to plastic three-dimensional bags of different widths and transverse motion guides.

The side of the side folding frame is equipped with a bottom opening frame through the main frame. A feeding auxiliary shaping plate is installed at the front of the bottom opening frame. On both sides of the bottom opening frame A hinge slider is installed on the top. One end of the hinge slider is connected to the slider transverse movement mechanism, and the other end is connected to the hinge lifting power source. The hinge lifting power source is connected to the hinge bottom control mechanism. The hinge bottom control mechanism is equipped with a bottom hinge.

The slider transverse movement mechanism includes a connected transverse internal push synchronous transmission component connected to the transverse internal push force source; the hinge bottom control mechanism includes a hinge seat installed under the hinge lifting power source. The hinge seat is equipped with a power source for the bottom hinge, and a hinge rotating rack is installed under the power source for the bottom hinge. The hinge rotating rack is connected to the hinge rotating gear. The bottom hinge is equipped with a power source. On the hinge rotation axis in the hinge rotation gear.

After adopting the present invention, the fully automatic forming processing work such as folding inward folding of both sides of the plastic three-dimensional bag sheet, opening the bottom, and clamping and conveying by the robot can be completed in sequence. This enhances the bonding firmness and effective rapid prototyping for subsequent bag making, and produces a plastic three-dimensional bag with a piece of paper sandwiched at the bottom, which comprehensively improves the speed, stability and yield of three-dimensional bag making.

Description of the drawings

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

Figure 1 is a schematic structural diagram of an automatic bag making system for plastic three-dimensional bags applied in the present invention.

Figure 2 is a schematic diagram of the installation structure of the present invention.

FIG. 3 is a schematic structural diagram of the bottom opening device in FIG. 1 .

Figure 4 is a flow chart showing the steps of making a plastic three-dimensional bag with a square bottom and a patch made by the present invention.

Detailed ways

Referring to Figures 1 and 2 (with the front part of the side folding frame removed), the two side folding device 4 of the plastic three-dimensional bag sheet material of the present invention includes a side folding frame 40. One side (left side) of the side folding frame 40 is equipped with a side sealing side pressure plate 41, and the other side (right side) is equipped with a side insert baffle 42. On the side folding frame 40 , and an upper suction plate 43 (close to the side sealing side pressure plate) and a middle pressure plate 44 (close to the side insert baffle) are installed in sequence between the side sealing side pressure plate 41 and the side insert baffle 42. A lower suction plate 45 is installed below the plate 43 and the middle pressure plate 44. A side insert plate 46 is installed on the side folding frame 40 and at the socket of the side insert baffle 42. The side insert plate 46 The side inserting plate longitudinal axis assembly 47 and the side inserting baffle 42 are respectively connected to the side inserting power source 49 (which is a side inserting cylinder) through the side inserting baffle transverse axis assembly 48. The side sealing side pressure plate 41 is connected to the side sealing side. The pressure power source 24 (which is an edge seal side pressure lifting cylinder) is connected to the middle pressure plate 44 and the middle pressure plate power source 25 (which is a middle pressure plate lifting cylinder). The upper suction plate 43 is connected to the upper suction plate lifting power source. 26 is connected, and the upper suction plate lifting power source 26 is connected to the upper suction plate traverse power source 28 (which is the upper suction plate traverse cylinder) through the upper suction plate connecting rod 27.

An auxiliary bar 29 is installed on the side (left side) of the upper suction plate 43 . A side pressure plate 20 is installed on the side inward folding frame 40 and above the edge sealing side pressure plate 41 . The side pressure plate 20 is connected to the side pressure plate power source 19 . The upper suction plate 43, the middle pressure plate 44, and the side insert baffle 42 are installed on the side inward folding frame 40 through the side insert transverse guide rail 18 to adapt to plastic three-dimensional bags of different widths and transverse motion guides.

After the plastic three-dimensional bag sheet is hot-sealed (side-sealed) on one side, it is clamped by the robot sheet transmission device 8 to the two-side inward folding device. The edge-sealed side crease of the sheet is just below the edge-sealing side pressure plate 41 . The edge sealing side pressure power source 24 drives the edge sealing side pressure plate to press down for positioning. The lower air suction plate performs downward air suction to assist positioning of the other side of the piece of material. Then, the upper air suction plate lifting power source 26 drives the upper air suction. The plate 43 is pressed down to suck the upper layer of the piece of material and then rise. Then, the upper suction plate traverse power source 28 drives the upper suction plate lifting power source 26 and the upper suction plate through the upper suction plate connecting rod 27 , move the entire upper layer of the sheet material laterally toward the side sealing side pressure plate (i.e., move it to the left and be pressed by the auxiliary pressure strip); at the same time, the side plug-in power source 49 drives the side plug-in plate 46 through the side plug-in plate longitudinal axis 47. The horizontal axis 48 of the baffle drives the side insert baffle 42 to move to the other side of the sheet (i.e., to the left). When the side insert baffle is pushed to the side of the lower suction plate, it stops moving, and the side insert plate continues to move to move the sheet. The other side of the material is folded inward; at this time, the middle pressure plate power source 25 drives the middle pressure plate 44 to press down and press the side insert plate, and the side insert plate continues to press down to achieve the inward folding of the other side of the sheet material. The side pressure plate power source 19 drives the side pressure plate 20 to press down, and the side sealing sides of the sheet are also folded inward along the side creases of the side sealing, and finally the two sides of the sheet are folded inward to form a bellows bag state on both sides ( That is, the two sides of the inward fold of the flat bag are like closed vent leaves, also known as organ plastic bags), as shown in the sheet state d in Figure 4.

The automatic bag-making system for plastic three-dimensional bags with patches at the square bottom used in the present invention includes a main frame 9. The front part of the main frame 9 is equipped with a sheet positioning and feeding device 1 and a copy and folding device 2 in sequence. , on the main frame 9 and on the sides of the replica folding device 2, a single side ironing device 3, a two-side inward folding device 4 of the plastic three-dimensional bag sheet material, and a bottom opening device 5 are installed in sequence. On the main frame 9, and in the middle of the sheet material positioning and feeding device, the duplicate folding device, the single-side edge pressing device, the two-side inward folding device of the plastic three-dimensional bag sheet material, and the bottom opening device Robot sheet material transmission device 8 (circular rotation); a bottom patch folding device 6 and a bottom ironing device 7 are installed on the main frame 9 and on the side of the bottom opening device 5. The sheet material positioning and feeding device 1, the duplication and folding device 2, the single-side ironing device 3, the two-side inward folding device of the plastic three-dimensional bag sheet material 4, the bottom opening device 5, the bottom patch folding device 6, the bottom The ironing devices 7 are arranged horizontally in a straight line on the main frame 9. The sheet positioning and feeding device 1 is at the front, and the bottom ironing device 7 is at the rear.

The sheet material positioning and feeding device 1 positions and feeds the plastic three-dimensional bag sheet materials, as shown in the sheet state a in Figure 4; the replica and folding device 2 pairs the plastic three-dimensional bag sheet materials with the center line indentation. The reference axis is turned over and folded in half, so that the sheet material is in a state of one side being closed, the upper and lower layers and the other side (i.e. three sides) being open, as shown in sheet state b in Figure 4; the robot sheet transmission The device 8 clamps the plastic three-dimensional bag pieces at the middle position of the bottom of the lower layer, and gradually transfers the pieces from the piece positioning and feeding device 1 to the station of the bottom patch folding device 6 for release. After the plastic three-dimensional bag sheet is folded in half, it is clamped by the robot sheet transmission device 8 to the single-side ironing device 3, and the single-side ironing of the folded sheet is completed, as shown in the sheet state c in Figure 4 shown.

As shown in Figure 3, the bottom opening device 5, the side of the side folding frame 40 is equipped with a bottom opening frame 50 through the main frame 9, and the front part of the bottom opening frame 50 is installed There is a feeding auxiliary shaping plate 51 (the front side of the feeding is high and the rear side of the discharging is low in a downward slope from front to back). Hinge sliders 52 are installed on both sides of the bottom opening frame 50 (for the left and right sides). Two pieces on the right), one end of the hinge slider 52 (through the slider seat 53) is connected to the slider transverse movement mechanism (a shared set), and the other end is connected to the hinge lift power source 56 (which is a hinge lift cylinder). , two sets) are connected, the hinge lifting power source 56 is connected to the hinge bottom control mechanism, and the hinge bottom control mechanism (two sets) is equipped with a bottom hinge 57.

The slider transverse movement mechanism includes a connected transverse internal push synchronous transmission assembly 54 connected to a transverse internal push force source 55 (which is a transverse internal push cylinder). The slider seat 53 is mounted on the transverse push-in synchronous transmission assembly 54. The hinge bottom control mechanism includes a hinge base 58 installed under the hinge lifting power source 56. The hinge base 58 is equipped with a bottom hinge power source 59 (which is a bottom hinge cylinder). The bottom hinge power source 59 is equipped with a hinge rotating rack 17. The hinge rotating rack 17 is connected to the hinge rotating gear 16. The bottom hinge 57 is installed (inserted) in the hinge rotating gear 16. on the hinge rotation axis 15.

The front part of the bottom opening frame 50 is equipped with a bag pressure plate lifting power source 14 (a bag pressure plate lifting cylinder), and the rear part is equipped with a bag bottom pressure plate lifting power source 12 (a bag bottom pressure plate lifting cylinder). The bag opening pressure plate lifting power source 14 is equipped with a bag opening pressure plate 13, and the bag bottom pressure plate lifting power source 12 is equipped with a bag bottom pressure plate 11.

After the plastic three-dimensional bag sheet is folded inwards on both sides, it is clamped by the robot sheet transmission device 8 to the front of the bottom opening device 5 and passes through the inside of the feeding auxiliary shaping plate 51. The bottom of the sheet is in the feeding position. The rear low part of the auxiliary shaping plate 51 and the mouth of the piece are at the front high part of the feeding auxiliary shaping plate 51. The piece is shaped as a whole and clamped until its bottom is on the side of the bottom hinge, and then, The power source 14 for lifting and lowering the bag pressure plate drives the bag pressure plate 13 to press down and position the middle part of the piece of material; then, the lateral movement internal push force source 55 of the slider lateral movement mechanism drives the lateral movement internal push synchronous transmission assembly 54 to make the hinge The slider 52 and the slider seat 53 move closer from both sides to the middle. The bottom hinge 57 is inserted into the side of the piece of material by pushing inwardly in the merged state, and the hinge bottom is lifted by the hinge lift power source 56. The overall downward pressure of the control mechanism and the bottom hinge, and the bottom hinge power source 59 of the hinge bottom control mechanism drive the hinge rotation rack 17 to pull up to rotate the hinge rotation gear 16, and then through the hinge rotation axis The rotation of 15 makes the bottom hinge 57 open, and finally the bottom (including both sides) of the sheet is opened into an open state. As shown in the sheet state e in Figure 4. Then, the bag bottom pressure plate lifting power source 12 drives the bag bottom pressure plate 11 to press down to shape the open bottom of the sheet material.

The bottom patch folding device 6 completes the automatic processing of the bottom patch piece of plastic three-dimensional bag sheet material and the short and long sides of the bottom folding inward, as shown in the sheet state f in Figure 4. This makes full preparation for the subsequent bottom hot-sealing of plastic three-dimensional bag sheets. Finally, the manipulator on the side of the main frame transports it to the bottom ironing device 7 for bottom ironing processing of the plastic three-dimensional bag sheets to form a plastic three-dimensional bag with paper sheets at the bottom, as shown in the sheet status g in Figure 4 shown.

Claims (6)

1. A device for folding both sides of plastic three-dimensional bag sheets, including a side folding frame (40), which is characterized in that: a side sealing side is installed on one side of the side folding frame (40). The pressing plate (41) and the side inserting baffle (42) are installed on the other side of the side folding frame (40), and the side pressing plate (41) and the side inserting baffle (42) are sealed ) are installed in sequence between the upper air suction plate (43) and the middle pressure plate (44). A lower air suction plate (45) is installed below the upper air suction plate (43) and the middle pressure plate (44). The side folding frame (40) is equipped with a side insert plate (46) at the socket of the side insert baffle (42). The side insert plate (46) passes through the side insert plate longitudinal axis assembly (47). ), the side insert baffle (42) is respectively connected to the side insert power source (49) through the side insert baffle transverse axis assembly (48), and the side sealing side pressure plate (41) is connected to the side sealing side pressure power source (24). ) are connected, the medium pressure plate (44) is connected to the medium pressure plate power source (25), the upper suction plate (43) is connected to the upper suction plate lifting power source (26), the upper suction plate lifting power source (26) is connected to the upper suction plate transverse power source (28) through the upper suction plate connecting rod (27). 2. The inward folding device of both sides of the plastic three-dimensional bag sheet material according to claim 1, characterized in that: auxiliary pressure strips (29) are installed on the sides of the upper air suction plate (43). 3. The device for folding both sides of plastic three-dimensional bag sheets according to claim 1 or 2, characterized in that: on the side folding frame (40), and on the side sealing side pressure plate (41) ) is equipped with a side pressure plate (20) above, and the side pressure plate (20) is connected to the side pressure plate power source (19). 4. The inward folding device of both sides of plastic three-dimensional bag sheets according to claim 2, characterized in that: the upper suction plate (43), the middle pressure plate (44) and the side insert baffle (42) pass through The side insertion transverse guide rail (18) is installed on the side folding frame (40). 5. The device for folding two sides of plastic three-dimensional bag sheets according to claim 1 or 2, characterized in that: the sides of the side folding frame (40) are installed through the main frame (9). There is a bottom opening frame (50), a feeding auxiliary shaping plate (51) is installed at the front of the bottom opening frame (50), and hinges are installed on both sides of the bottom opening frame (50) Slider (52), one end of the hinge slider (52) is connected to the slider transverse movement mechanism, and the other end is connected to the hinge lifting power source (56). The hinge lifting power source (56) is connected to the hinge The page bottom control mechanism is connected, and a page bottom hinge (57) is installed on the hinge bottom control mechanism. 6. The inward folding device of both sides of the plastic three-dimensional bag sheet material according to claim 5, characterized in that: the slider transverse movement mechanism includes a connected transverse inward pushing synchronous transmission assembly (54) and a transverse inward pushing synchronous transmission assembly (54). Propulsion source (55); the hinge bottom control mechanism includes a hinge seat (58) installed under the hinge lifting power source (56), and a bottom hinge is installed on the hinge seat (58) Power source (59). A hinge rotating rack (17) is installed under the bottom hinge power source. The hinge rotating rack (17) is connected to the hinge rotating gear (16). The bottom hinge The page (57) is mounted on the hinge rotating shaft (15) in the hinge rotating gear.