PE bag heat-sealing bag making machine

Abstract

The utility model relates to the technical field of heat-sealing bag making machines, and provides a PE bag heat-sealing bag making machine which comprises a bottom plate, a middle frame is fixedly connected to the top of the bottom plate, a top frame is fixedly connected to the top of the middle frame, a pressing plate is arranged at the bottom of the middle frame, and an upper heat-sealing plate is arranged in the pressing plate. The positioning mechanism is designed to be matched with the heat sealing mechanism, the pressing plate can press and position the PE bag through the positioning mechanism, the pressing plate can keep still in situ through the arrangement of the telescopic assembly after positioning the PE bag, the upper heat sealing plate can descend through the heat sealing mechanism, and the PE bag can be subjected to heat sealing through the hot ironing cutter. Positioning and heat sealing of the PE bag are more coherent, and the heat sealing efficiency of the PE bag is further improved; the PE bag is positioned, pressed and fixed through the positioning mechanism, the heat sealing plate can descend through the heat sealing mechanism to conduct heat sealing operation on the PE bag, and therefore it can be guaranteed that a hot iron cutter makes uniform contact with the bag, and the heat sealing process is more coherent and effective.

Description

Technical Field

[0001] The utility model relates to the technical field of heat-sealing bag-making machines, and in particular to a PE bag heat-sealing bag-making machine. Background Art

[0002] After searching, the patent with publication number CN216885470U discloses a heat-sealing and cold-cutting device for a PE shrink bag making machine. The device is transported through the feeding device of the bag making machine, and the heat-sealing and cutting speed is adjusted according to the feeding speed. Two oil cylinders are started, and the oil cylinder pushes the first support plate. The pressure plate is lowered through the spring guide column connected to the first support plate. The pressure strip and the cutting knife contact the PE shrink bag together, and the breakpoint cutting is performed while the pressure strip and the cutting knife remain stationary. When the pressure strip and the cutting knife remain stationary, multiple telescopic cylinders are started, and the telescopic cylinders push the upper heat sealing plate down, and the hot stamping knife heat-seals the PE shrink bag. After the heat sealing is completed, the upper heat sealing plate is reset, and then the pressure plate is reset.

[0003] The above-mentioned equipment needs to control multiple oil cylinders and multiple telescopic cylinders separately to achieve the positioning and heat sealing of PE bags. However, during the operation of multiple oil cylinders or multiple telescopic cylinders, once a certain oil cylinder or a certain telescopic cylinder moves too fast or too slow, the risk of equipment failure will increase, thereby affecting the heat sealing efficiency of the PE bag. Therefore, a PE bag heat sealing bag making machine is needed. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a PE bag heat-sealing bag-making machine to solve the technical problems mentioned in the above background technology.

[0005] The technical scheme of the utility model is as follows: a PE bag heat-sealing bag making machine comprises a bottom plate, a middle frame is fixedly connected to the top of the bottom plate, a top frame is fixedly connected to the top of the middle frame, a pressing plate is arranged at the bottom of the middle frame, an upper heat-sealing plate is arranged inside the pressing plate, a hot stamping knife is fixedly connected to the bottom of the upper heat-sealing plate, a lower heat-sealing plate is fixedly connected to the top of the bottom plate, a positioning mechanism is arranged at the top of the top frame for driving the pressing plate to move downward to press and position the PE bag, and a heat-sealing mechanism is arranged at the top of the top frame for driving the upper heat-sealing plate to move downward to cause the hot stamping knife to heat-seal the PE bag under the synchronous driving of the positioning mechanism;

[0006] The heat sealing mechanism includes a pressure plate arranged at the bottom of the top frame, a pressure plate is arranged at the bottom of the pressure plate, a groove is opened at the top of the pressure plate, the inner wall of the pressure plate is fixedly connected with a power plate, the inner wall of the power plate is threadedly connected with a threaded rod rotatably connected to the inner wall of the middle frame, the bottom end of the threaded rod is fixedly connected with a screw rod, and the outer wall of the screw rod is threadedly connected with a vertical moving cylinder fixedly connected to the top of the upper heat sealing plate.

[0007] Preferably, a columnar groove is formed at the top of the middle frame, a torsion spring is sleeved on the outer wall of the threaded rod, the torsion spring is arranged inside the columnar groove, and two ends of the torsion spring are respectively fixedly connected to the power plate and the threaded rod.

[0008] Preferably, a plurality of retaining rods are equidistantly and annularly fixedly connected to the bottom of the pressure plate, and a plurality of retaining grooves matching the plurality of retaining rods are equidistantly and annularly formed on the inner bottom wall of the groove.

[0009] Preferably, two limit blocks are symmetrically fixedly connected to both sides of the upper heat sealing plate, and two limit grooves for the two limit blocks to slide up and down are vertically symmetrically provided on the inner wall of the pressing plate.

[0010] Preferably, the positioning mechanism comprises a cylinder fixed on the top of the top frame, the telescopic end of the cylinder is fixedly connected to the n-shaped frame, the pressure plate is fixed on the top wall inside the n-shaped frame, and a telescopic component is arranged between the n-shaped frame and the pressure plate.

[0011] Preferably, the telescopic assembly includes an extension rod slidably sleeved inside the bottom end of the n-shaped frame, the bottom end of the extension rod is fixed to the top of the pressure plate, the outer wall of the extension rod is sleeved with a return spring, and the two ends of the return spring are respectively fixedly connected to the n-shaped frame and the pressure plate.

[0012] Preferably, a cutting knife and a pressure strip are symmetrically fixedly connected to the bottom of the pressing plate, the cutting knife is used to cut the PE bag at breakpoints, and the pressure strip is used to press and position the PE bag.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model is designed with a positioning mechanism that cooperates with a heat-sealing mechanism. The positioning mechanism can enable the pressing plate to press and position the PE bag. After the pressing plate positions the PE bag, it can remain in place through the setting of the telescopic component. The heat-sealing mechanism can cause the upper heat-sealing plate to descend so that the hot stamping knife can heat-seal the PE bag, making the positioning and heat-sealing of the PE bag more consistent, further improving the heat-sealing efficiency of the PE bag.

[0015] 2. The PE bag of the utility model is positioned, pressed and fixed by the positioning mechanism, and the heat sealing plate can be lowered through the heat sealing mechanism to perform heat sealing operation on the PE bag, thereby ensuring uniform contact between the hot stamping knife and the bag, thereby making the heat sealing process more consistent and effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure proposed by the utility model;

[0018] Figure 2This is a schematic diagram of the structure when viewed from above proposed by the utility model;

[0019] Figure 3 It is a partial cross-sectional view and an enlarged structural schematic diagram of the utility model;

[0020] Figure 4 This is a schematic diagram of the local structure proposed by the utility model.

[0021] In the figure: 1, bottom plate; 11, middle frame; 12, top frame; 2, pressure plate; 21, cutting knife; 22, pressure strip; 3, upper heat sealing plate; 4, hot stamping knife; 5, lower heat sealing plate; 6, positioning mechanism; 61, cylinder; 62, n-shaped frame; 621, telescopic assembly; 6211, extension rod; 6212, return spring; 7, heat sealing mechanism; 71, pressure plate; 72, pressure plate; 73, groove; 74, retaining rod; 75, retaining groove; 76, power plate; 77, threaded rod; 78, screw rod; 79, vertical moving cylinder; 710, limit block; 711, torsion spring; 712, limit groove. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] PE bag heat seal bag making machine is a kind of equipment used to produce and process polyethylene (PE) plastic bags. It is usually used to make various types of plastic bags, such as food bags, shopping bags, garbage bags, etc. The main function of this machine is to heat seal plastic film into bags of desired shape and size by heating and pressure.

[0024] Existing equipment needs to control multiple oil cylinders and multiple telescopic cylinders separately to achieve the positioning and heat sealing of PE bags. However, during the operation of multiple oil cylinders or multiple telescopic cylinders, once one of the oil cylinders or one of the telescopic cylinders moves too fast or too slow, it will increase the risk of equipment failure, thereby affecting the heat sealing efficiency of PE bags. Figure 1-Figure 4 The embodiment provides a PE bag heat-sealing bag making machine, including a bottom plate 1, a middle frame 11 is fixedly connected to the top of the bottom plate 1, a top frame 12 is fixedly connected to the top of the middle frame 11, a pressing plate 2 is provided at the bottom of the middle frame 11, a cutting knife 21 and a pressure strip 22 are symmetrically fixedly connected to the bottom of the pressing plate 2, the cutting knife 21 is used for breaking point cutting of the PE bag, and the pressure strip 22 is used for pressing and positioning the PE bag, an upper heat-sealing plate 3 is provided inside the pressing plate 2, a hot stamping knife 4 is fixedly connected to the bottom of the upper heat-sealing plate 3, and a lower heat-sealing plate 5 is fixedly connected to the top of the bottom plate 1.

[0025] refer to Figure 1-Figure 4 As shown, during the operation of multiple oil cylinders or multiple telescopic cylinders, once a certain oil cylinder or a certain telescopic cylinder moves too fast or too slow, the risk of equipment failure will increase, thereby affecting the heat sealing efficiency of the PE bag. In order to reduce the risk of equipment failure, the following settings are made: the top of the top frame 12 is provided with a positioning mechanism 6 for driving the pressing plate 2 to move downward to press and position the PE bag, and a heat sealing mechanism 7 for driving the upper heat sealing plate 3 to descend under the synchronous drive of the positioning mechanism 6 so that the hot knife 4 can heat seal the PE bag.

[0026] refer to Figure 2 As shown, the positioning mechanism 6 includes a cylinder 61 fixed on the top of the top frame 12, the telescopic end of the cylinder 61 is fixedly connected to the n-shaped frame 62, the pressure plate 71 is fixed to the inner top wall of the n-shaped frame 62, and a telescopic component 621 is arranged between the n-shaped frame 62 and the pressure plate 2. The cylinder 61 is started to make the telescopic end push the n-shaped frame 62 to move downward. According to the prior art, the pressure strip 22 and the cutting knife 21 contact the PE bag together, and the breakpoint cutting is performed while pressing. The n-shaped frame 62 continues to move downward, while the pressure strip 22 and the cutting knife 21 are kept in place by the setting of the telescopic component 621. The telescopic assembly 621 includes an extension rod 6211 slidably sleeved inside the bottom end of the n-shaped frame 62, the bottom end of the extension rod 6211 is fixed to the top of the pressure plate 2, and the outer wall of the extension rod 6211 is sleeved with a return spring 6212, and the two ends of the return spring 6212 are respectively fixedly connected to the n-shaped frame 62 and the pressure plate 2. When the n-shaped frame 62 continues to move downward, the pressure strip 22 and the cutting knife 21 remain stationary in place, causing the extension rod 6211 to gradually extend into the n-shaped frame 62 and squeeze the return spring 6212. When the n-shaped frame 62 moves upward, the extension rod 6211 is reset by the return spring 6212.

[0027] refer to Figure 2-Figure 4As shown, the heat sealing mechanism 7 includes a pressure plate 71 arranged at the bottom of the top frame 12, a pressure plate 72 is arranged at the bottom of the pressure plate 71, a groove 73 is opened at the top of the pressure plate 72, a plurality of retaining rods 74 are fixedly connected in an annular manner at equal intervals at the bottom of the pressure plate 71, a plurality of retaining grooves 75 which are matched with the plurality of retaining rods 74 are opened in an annular manner at equal intervals on the inner bottom wall of the groove 73, a power plate 76 is fixedly connected to the inner wall of the pressure plate 72, a threaded rod 77 which is rotatably connected to the inner wall of the middle frame 11 is threadedly connected to the inner wall of the power plate 76, and the threaded rod 77 is a special angle thread with a large spacing between the threads. A columnar groove is provided at the top of the middle frame 11, and a torsion spring 711 is sleeved on the outer wall of the threaded rod 77. The torsion spring 711 is arranged inside the columnar groove. The two ends of the torsion spring 711 are fixedly connected to the power plate 76 and the threaded rod 77 respectively. The bottom end of the threaded rod 77 is fixedly connected to a screw rod 78. The outer wall of the screw rod 78 is threadedly connected to a vertical moving cylinder 79 fixedly connected to the top of the upper heat sealing plate 3. Two limit blocks 710 are symmetrically fixedly connected on both sides of the upper heat sealing plate 3. The inner wall of the pressing plate 2 has two limit grooves 712 for the two limit blocks 710 to slide up and down. The n-shaped frame 62 continues to move downward so that the bottom end of the pressure plate 71 is placed in the top groove 73 of the pressure plate 72, and at the same time, a plurality of retaining rods 74 are inserted into a plurality of retaining grooves 75. As the n-shaped frame 62 moves downward, the power plate 76 is forced to move downward on the threaded rod 77, causing the threaded rod 77 to rotate and twist the torsion spring 711. The rotation of the threaded rod 77 drives the screw rod 78 to rotate, causing the vertical movement cylinder 79 to move downward on the outer wall of the screw rod 78. The downward movement of the vertical movement cylinder 79 simultaneously drives the upper heat sealing plate 3 to descend in the pressure plate 2, so that the hot stamping knife 4 heat-seals the PE bag. After the heat sealing is completed, the cylinder 61 is started to drive the n-shaped frame 62 to move upward. The upward movement of the n-shaped frame 62 causes the pressure plate 71 to move away from the pressure plate 72, and the power plate 76 is driven to return to its original position through the reset rotation of the torsion spring 711.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A PE bag heat-sealing bag making machine, comprising a bottom plate (1), a middle frame (11) fixedly connected to the top of the bottom plate (1), a top frame (12) fixedly connected to the top of the middle frame (11), characterized in that: A pressing plate (2) is provided at the bottom of the middle frame (11), an upper heat sealing plate (3) is provided inside the pressing plate (2), a hot stamping knife (4) is fixedly connected to the bottom of the upper heat sealing plate (3), a lower heat sealing plate (5) is fixedly connected to the top of the bottom plate (1), and a positioning mechanism (6) is provided at the top of the top frame (12) for driving the pressing plate (2) to move downward to press and position the PE bag, and a heat sealing mechanism (7) is provided for driving the upper heat sealing plate (3) to move downward to allow the hot stamping knife (4) to heat seal the PE bag under the synchronous drive of the positioning mechanism (6); The heat sealing mechanism (7) comprises a pressure plate (71) arranged at the bottom of the top frame (12), a pressure plate (72) is arranged at the bottom of the pressure plate (71), a groove (73) is arranged at the top of the pressure plate (72), the inner wall of the pressure plate (72) is fixedly connected with a power plate (76), the inner wall of the power plate (76) is threadedly connected with a threaded rod (77) rotatably connected to the inner wall of the middle frame (11), the bottom end of the threaded rod (77) is fixedly connected with a screw rod (78), and the outer wall of the screw rod (78) is threadedly connected with a vertical moving cylinder (79) fixedly connected to the top of the upper heat sealing plate (3).

2. A PE bag heat-sealing bag making machine according to claim 1, characterized in that: A columnar groove is formed on the top of the middle frame (11), a torsion spring (711) is sleeved on the outer wall of the threaded rod (77), the torsion spring (711) is arranged inside the columnar groove, and two ends of the torsion spring (711) are respectively fixedly connected to the power plate (76) and the threaded rod (77).

3. A PE bag heat-sealing bag making machine according to claim 1, characterized in that: The bottom of the pressure plate (71) is annularly and equidistantly fixedly connected with a plurality of retaining rods (74), and the inner bottom wall of the groove (73) is annularly and equidistantly provided with a plurality of retaining grooves (75) adapted to the plurality of retaining rods (74).

4. A PE bag heat-sealing bag making machine according to claim 1, characterized in that: Two limit blocks (710) are symmetrically fixedly connected to the two sides of the upper heat sealing plate (3), and two limit grooves (712) for the two limit blocks (710) to slide up and down are vertically symmetrically provided on the inner wall of the pressing plate (2).

5. A PE bag heat-sealing bag making machine according to claim 1, characterized in that: The positioning mechanism (6) comprises a cylinder (61) fixed on the top of the top frame (12); the telescopic end of the cylinder (61) is fixedly connected to an n-shaped frame (62); a pressure plate (71) is fixed to the inner top wall of the n-shaped frame (62); and a telescopic component (621) is provided between the n-shaped frame (62) and the pressure plate (2).

6. A PE bag heat-sealing bag making machine according to claim 5, characterized in that: The telescopic assembly (621) comprises an extension rod (6211) slidably sleeved inside the bottom end of the n-shaped frame (62); the bottom end of the extension rod (6211) is fixed to the top of the pressure plate (2); the outer wall of the extension rod (6211) is sleeved with a return spring (6212); the two ends of the return spring (6212) are respectively fixedly connected to the n-shaped frame (62) and the pressure plate (2).

7. A PE bag heat-sealing bag making machine according to claim 1, characterized in that: A cutting knife (21) and a pressure strip (22) are symmetrically fixedly connected to the bottom of the pressing plate (2), wherein the cutting knife (21) is used to perform breakpoint cutting on the PE bag, and the pressure strip (22) is used to press and position the PE bag.

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