Pillow packing machine end sealing device with corner inserting function

Abstract

The utility model relates to a pillow-packing machine end sealing device which adopts a cam as power and has a corner inserting function. The pillow packaging machine end sealing device with the corner inserting function comprises a machine base, an upper cutter assembly, a lower cutter assembly, a front belt conveying mechanism and a rear belt conveying mechanism, the upper cutter assembly is in transmission connection with an upper transmission shaft for driving the upper cutter assembly to move up and down, and the lower cutter assembly is in transmission connection with a lower transmission shaft for driving the lower cutter assembly to move up and down. The corner inserting device is characterized in that corner inserting pieces are arranged on the two sides of the front belt conveying mechanism and connected to corner inserting arms, the corner inserting arms are connected to corner inserting bases, and the corner inserting bases are arranged on corner inserting guide rails in a sliding mode; the upper transmission shaft is connected with a corner inserting cam, the corner inserting cam is provided with a cam guide groove, a guide wheel is arranged in the cam guide groove and connected with a cam upper swing arm, the cam upper swing arm is in transmission connection with the corner inserting base through a connecting rod transmission assembly, and the corner inserting cam rotates to drive the corner inserting piece to move left and right. According to the pillow-packing machine end sealing device with the corner inserting function, the cam is adopted as power, the corner inserting speed is not limited, the angle is determined according to the cam groove and does not need to be adjusted, the appearance size is uniform, debugging is convenient, and the appearance of finished products is uniform and attractive.

Description

Technical Field

[0001] The utility model relates to a pillow packing machine, in particular to an end sealing device of the pillow packing machine. Background Art

[0002] Pillow packaging machine is a device that uses film to package individual materials such as medicines, food, hardware, etc. The finished product of the pillow packaging machine is usually sealed twice by the middle sealing device and the end sealing device to form a bag similar to a pillow, such as Figure 7 The end-sealing device includes an upper blade assembly and a lower blade assembly, flanked by a front belt conveyor mechanism and a rear belt conveyor mechanism. The upper and lower blade assemblies work in a reciprocating motion to heat-seal and cut the film. The film is conveyed on the front and rear belt conveyor mechanisms. When the upper and lower blade assemblies are cutting, the front and rear belt conveyor mechanisms separate, allowing the cutter to sever the film in the middle. When the upper and lower blade assemblies separate, the front and rear belt conveyor mechanisms merge, allowing the film to continue to be conveyed forward (see the applicant's previously filed patent application, publication number CN106428813A).

[0003] When the packaging is relatively high, the ears on both sides of the finished product will expand too much, affecting the appearance. At the same time, it will be inconvenient to arrange and pack when the packaging is assembled. Therefore, when the packaging is relatively high, the pillow packaging bag is generally treated with an inset corner (such as Figure 6 (As shown, insert both the front and back ends of the bag inwards, improving aesthetics and facilitating subsequent collective packaging.) Traditional pillow packaging machines on the market typically use a pneumatic cylinder-type inset mechanism, which has several drawbacks that are difficult to improve. For example, speed is limited by air pressure and the response time of the solenoid valve, making it difficult to achieve high-speed and accurate insets. The noise generated by the cylinder's operation is difficult to eliminate. The uncontrollable speed and response time of the cylinder lead to inconsistent appearance of inset products, increasing the difficulty of debugging. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the utility model innovatively provides an end sealing device for a pillow packing machine which adopts a cam as a power source and has an inserting angle function.

[0005] This pillow packing machine end sealing device with an inserting angle function includes a machine base, an upper knife assembly and a lower knife assembly, a front belt conveyor mechanism and a rear belt conveyor mechanism, the upper knife assembly is connected to an upper transmission shaft that drives the upper knife assembly to move up and down, and the lower knife assembly is connected to a lower transmission shaft that moves the lower knife assembly up and down, and is characterized in that: both sides of the front belt conveyor mechanism are provided with inserting angle pieces, the inserting angle pieces are connected to the inserting angle arms, the inserting angle arms are connected to the inserting angle seats, and the inserting angle seats are slidably arranged on the inserting angle guide rails; the upper transmission shaft is connected to an inserting angle cam, the inserting angle cam has a cam guide groove, a guide wheel is provided in the cam guide groove, the guide wheel is connected to the cam upper swing arm, the cam upper swing arm is connected to the inserting angle seat through a connecting rod transmission assembly, and the rotation of the inserting angle cam can drive the inserting angle piece to move left and right.

[0006] The front belt conveying mechanism includes a front conveyor belt and a front sliding seat, a guide member extending in the left and right directions is installed on the front sliding seat, the angle arm is connected to the guide groove through the following slide, the guide member is located in the guide groove, the angle seat is connected to a following guide rail extending in the front and rear directions, and the following slide is slidably arranged on the following guide rail.

[0007] The connecting rod transmission assembly includes a connecting rod, a cam lower swing arm and a transmission connecting rod. The cam upper swing arm is connected to the cam lower swing arm through the connecting rod. The connecting rod is rotatably mounted on the swing seat. The cam lower swing arm is hinged to one end of the transmission connecting rod, and the other end of the transmission connecting rod is hinged to the angle seat.

[0008] The guide member is composed of a row of guide wheels.

[0009] The upper knife assembly also includes an upper knife die and a cutting knife; the lower knife assembly also includes a lower knife die.

[0010] The upper cutting die and the lower cutting die are both ultrasonic heat sealing cutting dies.

[0011] According to the utility model, an end sealing device for a pillow bag machine with an angle insertion function adopts a cam as a power source, the angle insertion speed is unlimited, the angle is determined by the cam groove and does not need to be adjusted, the appearance and size are uniform, debugging is convenient, and the appearance of the finished product is uniform and beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The three-dimensional Figure 1 ;

[0013] Figure 2 The three-dimensional Figure 2 ;

[0014] Figure 3 It is a structural diagram of the front belt conveying mechanism and the rear belt conveying mechanism;

[0015] Figure 4 This is the schematic diagram of the angle;

[0016] Figure 5 It is a structural diagram of the upper knife assembly and the lower knife assembly;

[0017] Figure 6 For the pillow bag after the corner is gusseted;

[0018] Figure 7 For un-gusseted pillowcase bags. DETAILED DESCRIPTION

[0019] like Figure 1 As shown, this pillow packing machine end sealing device with an inserting angle function includes a base, an upper knife assembly 3 and a lower knife assembly 4, a front belt conveyor mechanism 8 and a rear belt conveyor mechanism 9. The upper knife assembly 3 is connected to an upper transmission shaft 1 that drives the upper knife assembly 3 to move up and down, and the lower knife assembly 4 is connected to a lower transmission shaft 2 that moves the lower knife assembly 4 up and down; as for how the upper transmission shaft 1 and the lower transmission shaft 2 are transmitted, this is the prior art (see the patent with announcement number CN106428813A previously applied by the applicant), and will not be repeated here.

[0020] like Figure 2 As shown, on both sides of the front belt conveyor mechanism 8, there are plug-in pieces 5, which are connected to the plug-in arms 50, which are connected to the plug-in seats 51, and the plug-in seats 51 are slidably arranged on the plug-in guide rails 52. In order to utilize the upper transmission shaft 1 to synchronously drive the plug-in pieces 5 to move, an plug-in cam 6 is connected to the upper transmission shaft 1, and the plug-in cam 6 has a cam guide groove 60. A guide wheel 58 is arranged in the cam guide groove 60. The guide wheel 58 is connected to the cam upper swing arm 57, and the cam upper swing arm 57 is connected to the plug-in seat 51 through a connecting rod transmission assembly. When the upper transmission shaft 1 drives the plug-in cam 6 to rotate, the plug-in seat 51 is driven to slide on the plug-in guide rails 52 through the connecting rod transmission assembly, and the movable plug-in seat 51 drives the plug-in piece 5 to move left and right through the plug-in arm 50. Figure 4 As shown, when the left and right gussets 5 move relative to each other, the ends of the pillow bag 10 are forked inward, thus forming a Figure 6 The pillow bag.

[0021] Since the front belt conveying mechanism 8 moves forward and backward, in order to allow the insert 5 to move along with the front belt conveying mechanism 8, Figure 2 and Figure 3As shown, the front belt conveyor mechanism 8 includes a front conveyor belt 80 and a front sliding seat 81 (which is the prior art). A guide member 592 extending in the left-right direction is installed on the front sliding seat 81. The angle arm 50 is connected to the guide groove 591 through the following slide 59. The guide member 592 is located in the guide groove 591. The angle seat 51 is connected to a following guide rail 590 extending in the front-back direction. The following slide 59 is slidably arranged on the following guide rail 590. When the front sliding seat 81 moves back and forth, the guide member 592 mounted on the front sliding seat 81 also moves back and forth. This movement drives the guide slot 591 back and forth, which in turn drives the following slide 59 back and forth on the following guide rail 590. Since the gusset arm 50 is connected to the following slide 59, the gusset arm 50 also moves back and forth, and the gusset arm 50 also moves the gusset piece 5 back and forth. In other words, the forward and backward movement of the front sliding seat 81 synchronously drives the gusset piece 5 back and forth, allowing the gusset piece 5 to move back and forth along with the front belt conveyor mechanism 8. Since the pillow bag 10 is placed on the front belt conveyor mechanism 8, the gusset piece 5 is stationary relative to the pillow bag 10. When the gusset piece 5 moves left and right, it can accurately insert into the end of the pillow bag 10. Since the following guide rail 590 is connected to the gusset seat 51, when the gusset seat 51 moves left and right, it can also drive the gusset piece 5 left and right via the following guide rail 590, the following slide 59, and the gusset arm 50.

[0022] There are many kinds of transmission structures of the connecting rod transmission assembly, as long as it can drive the angle seat 51 to move left and right. An embodiment is specifically given below: Figure 2 As shown, the connecting rod transmission assembly includes a connecting rod 55, a cam lower swing arm 54, and a transmission connecting rod 53. The cam upper swing arm 57 is connected to the cam lower swing arm 54 via the connecting rod 55. The connecting rod 55 is rotatably mounted on a swing seat 56. The cam lower swing arm 54 is hinged to one end of the transmission connecting rod 53, and the other end of the transmission connecting rod 53 is hinged to the angle seat 51. When the angle cam 6 drives the cam upper swing arm 57 to swing via the guide wheel 58, the cam upper swing arm 57 drives the connecting rod 55 to rotate. The connecting rod 55 in turn drives the cam lower swing arm 54 to swing. The swinging of the cam lower swing arm 54 pulls the angle seat 51 to move left and right through the transmission connecting rod 53.

[0023] The guide member 592 may be a guide rail or may be composed of a row of guide wheels. Figure 2 As shown in the figure, a row of guide wheels is shown, and the guide member 592 guides the guide groove 591, allowing the guide groove 591 to move left and right together with the follower slide 59.

[0024] like Figure 5 As shown, the upper knife assembly 3 further includes an upper knife die 30 and a cutter 31; the lower knife assembly 4 further includes a lower knife die 40. The cutter 31 is used to cut the film, and the upper knife die 30 and the lower knife die 40 are used to heat seal the cut end of the film.

[0025] Finally, it's worth noting that both the upper and lower dies 30 and 40 are ultrasonic heat-sealing dies. Ultrasonic heat sealing offers the same ultra-fast sealing response, avoiding the drawback of conventional heat-sealing technologies, which suffers from a decrease in sealing speed with increasing film thickness. This compensates for sealing time and achieves leak-proof sealing. Furthermore, it has no effect on thermally sensitive products. Ultrasonic waves, operating at high frequencies within the inaudible range, create intramolecular friction within the film, breaking and reassembling molecular chains, resulting in a stronger, longer-lasting seal. Furthermore, when the machine is shut down or in standby mode, the ultrasonic waves cease immediately, generating no heat radiation and maintaining the product surface temperature at a constant level. This eliminates the thermal radiation impact of conventional high-frequency sealing techniques. Furthermore, ultrasonic sealing technology is well-suited to a wide range of available packaging films: single or complex layered, pre-printed, or simply plain with a registered trademark. Using ultrasonic technology can reduce film costs by over 30%.

Claims

1. An end sealing device for a pillow packing machine with an inserting angle function, comprising a base, an upper knife assembly (3) and a lower knife assembly (4), a front belt conveying mechanism (8) and a rear belt conveying mechanism (9), wherein the upper knife assembly (3) is in transmission connection with an upper transmission shaft (1) for driving the upper knife assembly (3) to move up and down, and the lower knife assembly (4) is in transmission connection with a lower transmission shaft (2) for driving the lower knife assembly (4) to move up and down, and is characterized in that: Both sides of the front belt conveying mechanism (8) are provided with an inserting angle piece (5), the inserting angle piece (5) is connected to the inserting angle arm (50), the inserting angle arm (50) is connected to the inserting angle seat (51), and the inserting angle seat (51) is slidably arranged on the inserting angle guide rail (52); the upper transmission shaft (1) is connected with an inserting angle cam (6), the inserting angle cam (6) has a cam guide groove (60), and a guide wheel (58) is provided in the cam guide groove (60), the guide wheel (58) is connected to the cam upper swing arm (57), and the cam upper swing arm (57) is connected to the inserting angle seat (51) through a connecting rod transmission assembly, and the rotation of the inserting angle cam (6) can drive the inserting angle piece (5) to move left and right.

2. The end sealing device of a pillow packing machine with an inserting function according to claim 1, characterized in that: The front belt conveying mechanism (8) includes a front conveying belt (80) and a front sliding seat (81), the front sliding seat (81) is provided with a guide member (592) extending in the left-right direction, the angled arm (50) is connected to the guide groove (591) through the following slide (59), the guide member (592) is located in the guide groove (591), the angled seat (51) is connected with a following guide rail (590) extending in the front-back direction, and the following slide (59) is slidably arranged on the following guide rail (590).

3. The end sealing device of a pillow packing machine with an inserting function according to claim 1, characterized in that: The connecting rod transmission assembly comprises a connecting rod (55), a cam lower swing arm (54) and a transmission connecting rod (53); the cam upper swing arm (57) is connected to the cam lower swing arm (54) via the connecting rod (55); the connecting rod (55) is rotatably mounted on a swing seat (56); the cam lower swing arm (54) is hinged to one end of the transmission connecting rod (53); and the other end of the transmission connecting rod (53) is hinged to the angle seat (51).

4. The end sealing device of a pillow packing machine with an inserting function according to claim 2, characterized in that: The guide member (592) is composed of a row of guide wheels.

5. The end sealing device of a pillow packing machine with an inserting function according to claim 1, characterized in that: The upper knife assembly (3) further comprises an upper knife die (30) and a cutting knife (31); the lower knife assembly (4) further comprises a lower knife die (40).

6. The end sealing device of a pillow packing machine with an inserting function according to claim 5, characterized in that: The upper knife die (30) and the lower knife die (40) are both ultrasonic heat sealing knife dies.

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