CN210759499U - High-speed bag making machine - Google Patents

Abstract

A high-speed bag making machine comprises a finished product input unit, a product folding unit, a product transferring unit, a bundling unit and a product output unit, wherein the middle part of a middle pressing plate of the product folding unit is hollowed out. The utility model discloses a middle part fretwork of intermediate pressure board, can carry out the step of indentation when carrying out the folding of first step, shortened the time of whole folding process, can shorten nearly 20% of the time, obviously improved the work efficiency of machine; the two up-and-down driving cylinders are utilized, so that the middle pressing plate can move upwards to leave the plastic bag when being reset and then move backwards to reset, the phenomenon that the indentation is flattened in the process of moving backwards is effectively avoided, and the folding effect is ensured; the width of the plastic bag belt lifting supporting plate and the width of the middle pressing plate can be adjusted according to the width of a product by using the pressing plate width adjusting device and the supporting plate width adjusting device, so that the applicability of the machine is improved; the folding device can directly output products without folding or output folded products according to requirements, and has two functions.

Description

High-speed bag making machine

Technical Field

The utility model relates to a high-speed bag making machine belongs to plastic bag preparation equipment.

Background

The material bag making machine in the prior art generally comprises a front process, a finished product input unit, a product folding unit, a product transferring unit, a bundling unit and a product output unit, wherein the front process comprises a feeding unit, a heat seal cutting unit and a notching unit, the finished product input unit inputs a plastic bag finished product which is notched by the notching unit to form a vest shape onto the product folding unit, the plastic bag finished product is folded by the product input unit and is conveyed to the bundling unit by the product transferring unit to be bundled, and finally the plastic bag finished product is output by the product output unit to complete the whole bag making process. The product folding unit comprises: a front angle folding mechanism for folding the two lifting belts at the front end of the vest-shaped plastic bag finished product towards the middle; the middle part of the front end of the front folding plate is provided with a front folding plate gap for the bag pressing hook to pass through; a rear flap for folding the rear portion of the plastic bag product forward; the front corner folding mechanism is arranged in front of the front folding plate, the rear folding plate is arranged behind the front folding plate, two guide plates which are arranged in parallel are arranged below the front folding plate and the rear folding plate, and two side pressing plates which are provided with opposite openings and can move up and down and relatively are respectively arranged above two ends of each guide plate; an n-shaped bracket connected with the racks on the two sides is arranged above the guide plate, an inserting plate is arranged below the n-shaped bracket, a front indentation plate and a rear indentation plate are respectively arranged in front of and behind the inserting plate, and the inserting plate, the indentation plates and the rear indentation plates are respectively connected with the guide rod through a driving device arranged on the n-shaped bracket; a front creasing plate notch corresponding to the front folded plate notch is arranged in the middle of the lower side of the front creasing plate; the rear part of the middle pressure plate is connected with a middle pressure plate driving device which can drive the middle pressure plate to deflect and move back and forth along the guide rail.

The middle pressing plate is an integral plate with a trapezoidal front end, when the folding device works, after a finished product input unit conveys a stack of plastic bags onto the product folding unit, the middle pressing plate reaches the upper part of the plastic bags from the back and moves downwards to press the plastic bags, then the folding unit folds two lifting belts at the front end of the plastic bags towards the middle, then a bag pressing hook bends upwards and backwards to press the upper part of the front part of the plastic bags, and then the middle pressing plate is moved away and reset; then, the front and the rear indentation plates press the indentations downwards on the plastic bag and then reset; then the front folded plate is folded upwards and backwards; and finally, the rear folded plate is folded upwards and forwards to complete the whole folding process. In the folding process, each folding step is carried out in sequence, each step occupies certain time, the working efficiency is reduced, if two steps can be carried out simultaneously, the folding time can be saved, and the working efficiency of the machine is improved; in addition, if the middle pressing plate moves backwards after indentation and resets, the lower surface of the middle pressing plate rubs with the plastic bag, the indentation pressed by the indentation plate is flattened, and the folding effect is poor; moreover, the width of the plastic bag belt lifting supporting plate and the width of the middle pressing plate are fixed, the plastic bag with a certain width can be folded, the middle pressing plate and the plastic bag belt lifting supporting plate with proper width need to be replaced if the width difference between the plastic bag belt lifting supporting plate and the middle pressing plate is too large, and the applicability of the machine is poor; also, for the case where folding is not required or the size of the plastic bag is not suitable for folding, the conventional bag making machine cannot directly transfer the product that is not folded to the function of the product output unit, resulting in a single function of the machine.

Disclosure of Invention

The utility model aims at providing a high-speed bag making machine, which solves the problem of lower working efficiency in the prior art; the middle pressing plate moves backwards and can flatten the pressed indentation of the indentation plate in the resetting process, so that the folding effect is influenced; the middle pressure plate has a fixed width, so that the applicability of the machine is poor; and the problem of single function.

The technical scheme of the utility model is that: a high-speed bag making machine comprises a finished product input unit, a product folding unit, a product transferring unit, a bundling unit and a product output unit, wherein the finished product input unit inputs a stack of plastic bag finished products which are punched to form a vest shape onto the product folding unit, the plastic bag finished products are folded by the product input unit, conveyed to the bundling unit by the product transferring unit to be bundled, and finally output by the product output unit to finish the whole bag making process; the product folding unit comprises: the front angle folding mechanism is used for folding the two lifting belts at the front end of the vest-shaped plastic bag finished product towards the middle, the front folding plate is used for folding the front part of the plastic bag finished product backwards, the rear folding plate is used for folding the rear part of the plastic bag finished product forwards, and the front angle folding mechanism is arranged in front of the front folding plate; a rear folded plate is arranged behind the front folded plate, two guide plates arranged in parallel are arranged below the front folded plate and the rear folded plate, and two side pressing plates with opposite openings and capable of moving up and down and relatively are respectively arranged above two ends of each guide plate; an n-shaped bracket connected with the racks on the two sides is arranged above the guide plate, an inserting plate is arranged below the n-shaped bracket, a front indentation plate and a rear indentation plate are respectively arranged in front of and behind the inserting plate, and the inserting plate, the indentation plates and the rear indentation plates are respectively connected with the guide rod through a driving device arranged on the n-shaped bracket; a bag pressing hook capable of swinging upwards and backwards is arranged in the middle of the front end of the front folding plate, and a front folding plate gap for the bag pressing hook to pass through is arranged in the middle of the front end of the front folding plate; a front creasing plate notch corresponding to the front folded plate notch is arranged in the middle of the lower side of the front creasing plate; the middle pressing plate is characterized in that the middle of the middle pressing plate is hollowed, and the hollowed area is slightly larger than the outline range of the cross sections of the inserting plate, the indentation plate and the rear indentation plate.

The middle pressure plate consists of two half pressure plates which are bilaterally symmetrical, the two half pressure plates are connected to a base plate in a sliding way, and the base plate is connected to a guide rail which is longitudinally arranged in a sliding way; the rear end of the guide rail is hinged with the frame; the intermediate pressure plate driving device comprises: the two ends of the front and rear driving cylinders are respectively connected with the rack and the base plate; two ends of a first up-down driving cylinder are respectively connected between the lower surface of the front end of the guide rail and the frame; a pressure plate width adjusting device for adjusting the distance between the two half pressure plates is arranged between the two half pressure plates.

A second up-down driving cylinder is connected between the lower end of the first up-down driving cylinder and the rack; or the first air cylinder adopts a multi-position type air cylinder to realize the stepped lifting.

The front corner folding mechanism comprises: the plastic bag lifting belt supporting plate is arranged in front of the front folding plate, and the rear end of the plastic bag lifting belt supporting plate is provided with a trapezoidal groove matched with a 45-degree trapezoidal edge at the front end of the middle pressing plate; two front angle folding plates capable of moving left and right relatively are arranged below the plastic bag lifting belt supporting plate, and front angle folding plate notches corresponding to the bag pressing hook are arranged at the rear ends of the front angle folding plates.

The plastic bag belt lifting supporting plate consists of two trapezoidal plates which are oppositely arranged left and right, and the rear ends of the two trapezoidal plates are oblique edges of the trapezoidal grooves; two trapezoidal plates can be installed on a base plate in a left-back sliding mode, and a supporting plate width adjusting device for adjusting the distance between the two trapezoidal plates is installed.

The product transfer unit comprises a U-shaped transmission clamp and a transmission mechanism, the transmission clamp is connected to the transmission mechanism, and the transmission mechanism is used for conveying the transmission clamp to the bundling unit from the lower part of the product folding unit to the rear part of the product folding unit to bundle.

The unit of tying up include rubber band output device, rubber band transfer device, plastic bag transfer device and rubber band distraction device, this plastic bag transfer device includes: the binding machine comprises a binding driving cylinder, a turning driving cylinder, a movable cross beam, a binding mechanical arm cylinder, a binding mechanical arm and a binding track, wherein the horizontal binding track is arranged on a rack; the movable beam is slidably arranged on the bundling rail and can move back and forth under the driving of the bundling driving cylinder; the middle part of a cylinder body of a binding mechanical arm cylinder is hinged behind the movable cross beam, the front end of a turnover driving cylinder is hinged with the front end of a support, and the rear end of the support is connected with the front end of the movable cross beam; the rear end of the overturning driving cylinder is hinged with the lower end of the cylinder body of the bundling mechanical arm cylinder, and the top end of the bundling mechanical arm cylinder is provided with a bundling mechanical arm;

a product direct output mechanism is arranged below the movable beam and comprises: the direct output rail is connected with the rack through a cross beam, the slide block is installed on the direct output rail in a sliding mode, the withdrawing cylinder is connected below the slide block, and the top end of a piston rod at the rear end of the withdrawing cylinder is connected with the direct output manipulator; the front end of the direct output cylinder is connected with the frame, and the top end of a piston rod at the rear end of the direct output cylinder is connected with the sliding block.

A direct output platen, configured in the same shape as the intermediate platen, is provided for mounting on or replacing the intermediate platen when directly outputting an unfolded product.

The utility model has the advantages that: the middle part of the middle pressing plate is hollowed, so that the indentation step can be carried out while the first step of folding is carried out, the time of the whole folding process is shortened, the time can be shortened by nearly 20 percent, and the working efficiency of the machine is obviously improved; the upper and lower driving cylinders or the multi-position cylinders are utilized, so that the middle pressing plate can move upwards to leave the plastic bag when being reset and then move backwards to reset, the phenomenon that the indentation is leveled in the moving backwards process is effectively avoided, and the folding effect is ensured; the width of the plastic bag belt lifting supporting plate and the width of the middle pressing plate can be adjusted according to the product width by utilizing the pressing plate width adjusting device and the supporting plate width adjusting device, so that the size range of processed products is expanded, and the applicability of a machine is improved; the folding-free product or the folded product can be directly output according to the requirement, and the folding-free product or the folded product has two output functions.

Drawings

FIG. 1 is a schematic view of the general structure of the present invention (cross-sectional view B-B of FIG. 2, without the front process);

FIG. 2 is a cross-sectional view A-A of FIG. 1 (without the front creasing plate, insert plate, and rear creasing plate);

FIG. 3 is a schematic cross-sectional view C-C of FIG. 1;

FIG. 4 is a schematic structural view of an embodiment of the strapping unit and the product direct out mechanism of FIG. 1;

FIG. 5 is a top view of FIG. 4;

FIG. 6 is a cross-sectional view D-D of FIG. 4;

fig. 7 is a top view of the half (trapezoidal plate) of the plastic bag strap support plate of the present invention;

FIG. 8 is a right side view of FIG. 7;

fig. 9 is a top view of fig. 7.

Description of reference numerals: 1. a frame, 2, a plastic bag lifting belt supporting plate, 2-1, a trapezoidal plate, 2-2, a bevel edge, 2-3, a bent edge, 3, a front angle folding plate, 301, a front angle folding plate notch, 4, a driving cylinder (of the plastic bag lifting belt supporting plate), 5, a driving cylinder (of the lifting belt folding plate), 6, a bag pressing hook, 7, a hook driving cylinder, 8, a front folding plate, 81, a front folding plate notch, 9, a front folding plate shaft (one end is provided with a driving cylinder or a motor), 10, a front creasing plate, 101, a front creasing plate notch, 11, an inserting plate, 12, a rear creasing plate, 13, a cylinder, 131, a guide rod, 14, a cylinder, 15, a cylinder, 16, two side pressing plates, 17, a rear folding plate, 18, a middle pressing plate, 19, a base plate, 191, a pressing plate guide rail, 20, a bundling unit and a product direct output mechanism, 201, a bundling driving cylinder, 203. the device comprises a turnover driving cylinder, 204, a moving beam, 205, a bundling mechanical arm cylinder, 206, a bundling manipulator, 207, a bundling rail, 208, a rubber band expanding device, 209, a direct output cylinder, 210, an ejection cylinder, 211, a sliding block, 212, a direct output rail, 213, a direct output manipulator, 214, a manipulator lifting cylinder, 215, a beam (connected with a frame), 21, a longitudinal guide rail, 22, a hinge shaft, 23, a beam (connected with the frame), 24, a front and back driving cylinder, 25, a product output unit, 26, a first up and down driving cylinder, 27, a second up and down driving cylinder, 28, a transmission guide rail, 29, a transmission clamp, 30, a sliding block, 31, a guide plate, 32, a driving cylinder, 33, a base plate, 34, an n-shaped bracket, 35, a pressing plate width adjusting device, 36 and a supporting plate width adjusting device.

Detailed Description

Referring to fig. 1-9, the utility model relates to a high-speed bag making machine, which comprises a finished product input unit, a product folding unit, a product transferring unit, a bundling unit and a product output unit 25, wherein the finished product input unit inputs a plastic bag finished product which is shaped like a vest after being punched to the upper surface of the product folding unit, the plastic bag finished product is folded by the product folding unit, and the plastic bag finished product is conveyed to the bundling unit for bundling by the product transferring unit, and finally is output by the product output unit, so that the whole bag making process is completed; the product folding unit comprises: the front angle folding mechanism is used for folding two lifting belts at the front end of a vest-shaped plastic bag finished product towards the middle, and is used for folding a front folding plate 8 at the front part of the plastic bag finished product backwards, a bag pressing hook 6 capable of swinging upwards and backwards is arranged in the middle of the front end of the front folding plate 8, the bag pressing hook 6 is driven by a hook driving cylinder 7 arranged below the front end of the front folding plate 8, and a front folding plate notch 81 used for passing through the bag pressing hook 6 is arranged in the middle of the top edge; a rear flap 17 for folding the rear portion of the plastic bag product forward; the front corner folding mechanism is arranged in front of a front folding plate 8, a rear folding plate 17 is arranged behind the front folding plate 8, two guide plates 31 arranged in parallel are arranged below the space between the front folding plate and the rear folding plate, and two side pressing plates 16 with opposite openings and capable of moving up and down and relatively are respectively arranged above two ends of each guide plate 31; an n-shaped bracket 34 connected with the frames on two sides is arranged above the guide plate 31, an inserting plate 11 is arranged below the n-shaped bracket 34, a front indentation plate 10 and a rear indentation plate 12 are respectively arranged in front of and behind the inserting plate 11, and the inserting plate 11, the indentation plate 10 and the rear indentation plate 12 are respectively connected with a guide rod through a driving device arranged on the n-shaped bracket 34 (in the embodiment, the driving device of the front indentation plate 10 adopts a cylinder 13, two guide rods 131 are respectively arranged on two sides of the cylinder 13; the driving devices of the inserting plate 11 and the rear indentation plate 12 respectively adopt a cylinder 14 and a cylinder 15, and two guide rods are also arranged on two sides of the cylinder 14 and the cylinder 15). A front creasing plate notch 101 corresponding to the front flap notch 81 is provided in the middle of the lower side of the front creasing plate 10. An intermediate pressure plate 18 is arranged above the rear part of the frame 1, the front end of the intermediate pressure plate is in a 45-degree trapezoid shape (namely, two angles of the front end are in 45-degree chamfers), and the rear part of the intermediate pressure plate 18 is connected with an intermediate pressure plate driving device capable of driving the intermediate pressure plate to deflect and move back and forth along the longitudinal guide rail 21.

The front corner folding mechanism shown in fig. 1 and 2 comprises: the plastic bag lifting belt supporting plate 2 is arranged in front of the front folding plate 8, the plastic bag lifting belt supporting plate 2 is of an improved structure and consists of two trapezoidal plates 2-1 which are oppositely arranged left and right (detailed later), and the rear ends of the trapezoidal plates 2-1 are provided with bevel edges 2-2 matched with 45-degree trapezoidal bevel edges 182 at the front end of the middle pressing plate 18; two front angle folding plates 3 capable of moving left and right relatively are arranged below the plastic bag lifting belt supporting plate 2 (the plastic bag lifting belt is folded by matching with the plastic bag lifting belt supporting plate 2), and a front angle folding plate notch 301 corresponding to the bag pressing hook 6 is arranged at the rear end of the front angle folding plate 3 (a channel for the bag pressing hook 6 to turn upwards is provided). Two front angle folding plates 3 are respectively driven by a driving cylinder 5 to synchronously and relatively move; the driving cylinder 5 is installed on a base plate 33, and the base plate 33 is driven by the driving cylinder 4 to move forward and backward in synchronization with the plastic bag carrier strip supporting plate 2 and the front corner folding plate 3. The front corner folding mechanism can also be two triangular folding plates (not shown) hinged with two bevel edges of the front folding plate 8 of the isosceles trapezoid, and the front corner folding mechanism can be folded upwards during operation and has the same function.

The product transfer unit comprises a U-shaped conveying clamp 29 and a transmission mechanism, wherein the conveying clamp 29 is connected to the transmission mechanism, and the transmission mechanism is used for conveying the conveying clamp 29 to the bundling unit for bundling after going from the lower part of the product folding unit. The transmission mechanism for driving the transmission clamp 29 to move back and forth can adopt the transmission guide rail 28 and the driving air cylinder 32 (the transmission clamp 29 is slidably mounted on the transmission guide rail 28 through the slide block 30, the latter is connected with the frame 1, and the piston rod of the driving air cylinder 32 is connected with the slide block 30) which are illustrated in the figure. The transmission mechanism can also adopt a chain transmission mechanism (a plurality of drive transmission clamps 29 are connected on a chain at intervals).

The above (except where specifically noted) are prior art.

The utility model discloses an improve one the middle part of middle clamp plate 18 be fretwork 181, the region of fretwork (its front end can link up, also can be for sealing) slightly is greater than the profile scope of picture peg 11, preceding indentation board 10 and back indentation board 12 cross section. Therefore, the creasing step (the front creasing plate 10 and the rear creasing plate 12 move downwards to press folding marks on the plastic bag) can be carried out while the front first-step folding (the two front creasing plates 3 move towards the middle to fold the carrying belt of the plastic bag towards the middle) is carried out, so that the time of the whole folding process is shortened (from 11 seconds to 9 seconds through experiments), and the working efficiency of the machine is obviously improved.

The second improvement of the present invention is that the middle pressing plate 18 is composed of two half pressing plates which are arranged symmetrically left and right, the two half pressing plates are connected to the transverse pressing plate guide rail 191 on the base plate 19 in a sliding way, and the base plate 19 is connected to the longitudinal guide rail 21 in a sliding way; a pressure plate width adjusting device 35 for adjusting the distance between the two half pressure plates is arranged between the two half pressure plates. In cooperation with the above, the plastic bag lifting belt supporting plate 2 (see fig. 7-9) is composed of two trapezoidal plates 2-1 arranged oppositely left and right, and the rear ends of the two trapezoidal plates 2-1 are oblique edges 2-2 matched with the 45-degree trapezoidal oblique edge 182 at the front end of the middle pressing plate 18; two trapezoidal plates 2-1 are slidably mounted to a base plate 33 (identical in construction to the aforementioned two half-press plates slidably attached to a transverse press plate guide 191 on a base plate 19, not shown) to be left and rear, and are provided with support plate width adjusting means 36 for adjusting the spacing between the two trapezoidal plates 2-1.

The pressing plate width adjusting device 35 and the supporting plate width adjusting device 36 can adopt conventional technology, such as adopting screw rods with opposite spiral and two nuts installed on different spiral of the screw rods, wherein the two nuts are respectively connected with the two half supporting plates or the two half pressing plates, the distance between the two nuts can be adjusted by rotating the screw rods, and the screw rods can also be driven by a motor; the air cylinder can also be used for driving the adjusting object; or any device known in the art that can adjust the separation between two components.

The third improvement of the utility model is that the rear end of the longitudinal guide rail 21 is hinged with the frame 1; the intermediate pressure plate driving device comprises: a front and rear driving cylinder 24 and a first up and down driving cylinder 26, both ends of the front and rear driving cylinder 24 arranged in front and rear are respectively connected with the frame and the base plate 19; both ends of a first up-down driving cylinder 26 are connected between the lower surface of the front end of the guide rail 21 and the frame, respectively. A second up-down driving cylinder 27 is connected between the lower end of the first up-down driving cylinder 26 and the frame. Or (without the second up-down driving cylinder 27) the first up-down driving cylinder 26 adopts a multi-position type cylinder (two positions) to achieve the same object.

Utilize two to drive actuating cylinder or multiposition type cylinder from top to bottom, can utilize the second to drive actuating cylinder 27 from top to bottom when middle clamp plate 18 resets and upwards remove a distance (a plurality of millimeters) with the front end of guide rail 21, drive middle clamp plate 18 upwards synchronous motion and leave the plastic bag, then remove backward again and reset, effectively avoided middle clamp plate 18 to move the phenomenon that the indentation that preceding creasing plate 10 and back creasing plate 12 had been pushed out on the plastic bag was evened out in the back in-process, guaranteed folding effect (there is not the indentation to lead to folding time folding irregular arch appear).

The fourth improvement of the utility model is that, through the improvement to tying up the unit and increasing the direct output mechanism of product (both constitute and tie up unit and the direct output mechanism 20 of product), make the utility model discloses have direct output and do not have two kinds of functions of folding product or the product after the output is folding. The specific improvement scheme is as follows:

the unit of tying up include rubber band output device, rubber band transfer device, plastic bag transfer device and rubber band distraction device 208 (rubber band output device, rubber band transfer device and rubber band distraction device 208 wherein are conventional technique), this plastic bag transfer device includes: the device comprises a binding driving cylinder 201, an overturning driving cylinder 203, a movable beam 204, a binding mechanical arm cylinder 205, a binding manipulator 206 and a binding track 207, wherein the horizontal binding track 207 is arranged on a rack; the movable beam 204 is slidably arranged on the binding track 207, and the movable beam 204 is driven by the binding driving cylinder 201 to move back and forth; the middle part of the cylinder body of a binding mechanical arm cylinder 205 is hinged behind the movable beam 204, the front end of a turnover driving cylinder 203 is hinged with the front end of a bracket 202, and the rear end of the bracket 202 is connected with the front end of the movable beam 204; the rear end of the turning driving cylinder 203 is hinged to the lower end of the cylinder body of the binding robot arm cylinder 205, and the top end of the binding robot arm cylinder 205 is provided with a binding manipulator 206.

A product direct output mechanism is arranged below the moving beam 204 and comprises: the direct output device comprises a direct output cylinder 209, an ejection cylinder 210, a slide block 211, a direct output track 212, a direct output manipulator 213 and a manipulator lifting cylinder 214, wherein the direct output track 212 is connected with the frame through a cross beam 215, the slide block 211 is installed on the direct output track 212 in a sliding manner, the ejection cylinder 210 is connected below the slide block 211, and the top end of a piston rod at the rear end of the ejection cylinder 210 is connected with the direct output manipulator 213; the front end of the direct output cylinder 209 is connected with the frame, and the top end of the piston rod at the rear end of the direct output cylinder 209 is connected with the sliding block 211.

The operation of the two modes of operation of the strapping unit and the product direct-output mechanism 20 described above is explained as follows:

1. outputting the functions of the folded plastic bag product: the folded plastic bag is pressed downward by the insert plate 11 from the gap between the two guide plates 31 (the folded plastic bag is folded once while being pressed out), the plastic bag is pushed into the conveying clamp 29 waiting below, and the latter is driven by the driving cylinder 32 to move backward, conveyed to the bundling unit for bundling and then output by the product output unit. In the process of performing this function, the piston rod of the inversion driving cylinder 203 of the binding unit is in an extended state, and the binding robot arm cylinder 205 and the binding robot 206 are in a vertical state (indicated by solid lines in fig. 4).

2. Function of directly outputting plastic bags without folding: the inversion of the strapping unit drives the piston rod of the cylinder 203 to retract, bringing the strapping robot arm cylinder 205 and the strapping robot 206 into a horizontal position (shown in phantom in fig. 4, in order to clear the path for the forward and backward movement of the product direct out-feed mechanism below). Meanwhile, the piston rod of the manipulator lifting cylinder 214 extends out to drive the direct output manipulator 213 to move downwards until the height corresponds to the height of the intermediate pressing plate 18, and the direct output manipulator 213 opens; thereafter, the intermediate platen 18 is moved forward above the product folding unit, the stack of plastic bags output from the front process without being folded is conveyed onto the intermediate platen 18, the intermediate platen 18 is moved backward by a distance to convey the rear edge of the stack of plastic bags thereon into the mouth of the direct output robot 213 of the product direct output mechanism, which merges and grips the plastic bags; then, the direct output robot 213 moves backward to the front end of the product output unit 25 by the driving of the direct output cylinder 209, and the direct output robot 213 opens; then, the piston rod of the withdrawing cylinder 210 extends out to drive the direct output manipulator 213 to move backward for a certain distance (retreat), so that the plastic bag is separated from the direct output manipulator 213 and falls on the product output unit 25; subsequently, the piston rod of the manipulator elevating cylinder 214 contracts to drive the direct output manipulator 213 to move upwards, so as to leave the channel for outputting the product backwards, and finally, the product is output backwards by the product output unit 25.

The utility model discloses also can be with the embodiment of two diagrams and arrange for the double-line, the productivity doubles, under this condition, some parts can share one set (as n shape support 34, picture peg 11, preceding indentation board 10 and back indentation board 12 and their start-up cylinder and guide bar), belong to prior art, no longer describe repeatedly.

Claims (8)

1. A high-speed bag making machine comprises a finished product input unit, a product folding unit, a product transferring unit, a bundling unit and a product output unit, wherein the finished product input unit inputs a stack of plastic bag finished products which are punched to form a vest shape onto the product folding unit, the plastic bag finished products are folded by the product input unit, conveyed to the bundling unit by the product transferring unit to be bundled, and finally output by the product output unit to finish the whole bag making process; the product folding unit comprises: the front angle folding mechanism is used for folding the two lifting belts at the front end of the vest-shaped plastic bag finished product towards the middle, the front folding plate is used for folding the front part of the plastic bag finished product backwards, the rear folding plate is used for folding the rear part of the plastic bag finished product forwards, and the front angle folding mechanism is arranged in front of the front folding plate; a rear folded plate is arranged behind the front folded plate, two guide plates arranged in parallel are arranged below the front folded plate and the rear folded plate, and two side pressing plates with opposite openings and capable of moving up and down and relatively are respectively arranged above two ends of each guide plate; an n-shaped bracket connected with the racks on the two sides is arranged above the guide plate, an inserting plate is arranged below the n-shaped bracket, a front indentation plate and a rear indentation plate are respectively arranged in front of and behind the inserting plate, and the inserting plate, the indentation plates and the rear indentation plates are respectively connected with the guide rod through a driving device arranged on the n-shaped bracket; a bag pressing hook capable of swinging upwards and backwards is arranged in the middle of the front end of the front folding plate, and a front folding plate gap for the bag pressing hook to pass through is arranged in the middle of the front end of the front folding plate; a front creasing plate notch corresponding to the front folded plate notch is arranged in the middle of the lower side of the front creasing plate; the middle pressing plate is characterized in that the middle of the middle pressing plate is hollowed, and the hollowed area is slightly larger than the outline range of the cross sections of the inserting plate, the indentation plate and the rear indentation plate.

2. The high speed bag machine as recited in claim 1 wherein said intermediate press platen is comprised of two side-to-side symmetric half platens slidably attached to a base plate slidably attached to a longitudinally disposed guide rail; the rear end of the guide rail is hinged with the frame; the intermediate pressure plate driving device comprises: the two ends of the front and rear driving cylinders are respectively connected with the rack and the base plate; two ends of a first up-down driving cylinder are respectively connected between the lower surface of the front end of the guide rail and the frame; a pressure plate width adjusting device for adjusting the distance between the two half pressure plates is arranged between the two half pressure plates.

3. The high-speed bag machine according to claim 2, wherein a second up-down driving cylinder is connected between the lower end of said first up-down driving cylinder and the frame; or the first air cylinder adopts a multi-position type air cylinder to realize the stepped lifting.

4. The high speed bag machine as recited in claim 1 or 2 wherein said front corner folding mechanism comprises: the plastic bag lifting belt supporting plate is arranged in front of the front folding plate, and the rear end of the plastic bag lifting belt supporting plate is provided with a trapezoidal groove matched with a 45-degree trapezoidal edge at the front end of the middle pressing plate; two front angle folding plates capable of moving left and right relatively are arranged below the plastic bag lifting belt supporting plate, and front angle folding plate notches corresponding to the bag pressing hook are arranged at the rear ends of the front angle folding plates.

5. The high-speed bag machine as claimed in claim 4, wherein said plastic bag lifting belt support plate is composed of two trapezoidal plates disposed opposite to each other, the rear ends of the two trapezoidal plates being the oblique sides of said trapezoidal grooves; two trapezoidal plates can be installed on a base plate in a left-back sliding mode, and a supporting plate width adjusting device for adjusting the distance between the two trapezoidal plates is installed.

6. The high speed bag machine of claim 1, wherein said product transfer unit includes a U-shaped transport clamp and a drive mechanism, the transport clamp being connected to the drive mechanism for transporting the transport clamp from below said product folding unit to said strapping unit for strapping.

7. The high speed bag machine as recited in claim 1 wherein said strapping unit includes a web output, a web transfer, a plastic bag transfer and a web spreader, the plastic bag transfer including: the binding machine comprises a binding driving cylinder, a turning driving cylinder, a movable cross beam, a binding mechanical arm cylinder, a binding mechanical arm and a binding track, wherein the horizontal binding track is arranged on a rack; the movable beam is slidably arranged on the bundling rail and can move back and forth under the driving of the bundling driving cylinder; the middle part of a cylinder body of a binding mechanical arm cylinder is hinged behind the movable cross beam, the front end of a turnover driving cylinder is hinged with the front end of a support, and the rear end of the support is connected with the front end of the movable cross beam; the rear end of the overturning driving cylinder is hinged with the lower end of the cylinder body of the bundling mechanical arm cylinder, and the top end of the bundling mechanical arm cylinder is provided with a bundling mechanical arm;

a product direct output mechanism is arranged below the movable beam and comprises: the direct output rail is connected with the rack through a cross beam, the slide block is installed on the direct output rail in a sliding mode, the withdrawing cylinder is connected below the slide block, and the top end of a piston rod at the rear end of the withdrawing cylinder is connected with the direct output manipulator; the front end of the direct output cylinder is connected with the frame, and the top end of a piston rod at the rear end of the direct output cylinder is connected with the sliding block.

8. The high speed bag machine as recited in claim 1, further including a direct take-off platen of the same shape as said intermediate platen for mounting on or replacing the intermediate platen when directly taking off the unfolded product.

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