Heat sealing mechanism of packaging machine

Abstract

The utility model relates to the technical field of packaging machines, in particular to a heat sealing mechanism of a packaging machine, which comprises a support frame, a fixing plate and a mounting plate, the projection of the supporting frame is in a U shape, the supporting frame is located on one side of the installation plate, and two fixing plates are symmetrically installed on the installation plate in the width direction of the installation plate. The fixing plate is provided with a melting assembly used for melting the packaging bags to enable the packaging bags to be connected. The melting assembly is provided with a shearing assembly used for shearing the melted packaging bag. A driving assembly used for driving the melting assembly and the shearing assembly to work is arranged on the supporting frame. The two ends of the supporting frame are provided with the melting assemblies respectively, the two motors are started synchronously to drive the two-way lead screw to drive the first lead screw nut and the second lead screw nut to move towards or away from each other, and therefore the melting parts on the two sides get close to each other, and a packaging belt is sealed.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging machines, in particular to a heat-sealing mechanism of a packaging machine. Background Technique

[0002] A packaging machine is a type of machine that packages products, playing the roles of protection and aesthetics.

[0003] The utility model with the authorization公告号 of CN218142521U discloses a heat-sealing mechanism of a powder food packaging machine, including a housing and a pressing plate. A feeding pipe is installed at the top of the housing, and the bottom end of the feeding pipe is fixedly connected with a discharge pipe that penetrates into the interior of the housing and is located above the pressing plate. A heating plate is sleeved inside the pressing plate. One end of the housing is provided with a driving unit that penetrates into the interior of the housing and is connected to the pressing plate for driving the pressing plate to move. A protection unit for blocking the heating plate is arranged inside the pressing plate.

[0004] However, the above technical solution has the following defects: The device cannot cut the packaged object after heating and melting the packaging, increasing the workload of the staff and unable to effectively save labor. Content of the Utility Model

[0005] The purpose of the utility model is to propose a heat-sealing mechanism of a packaging machine for the problems existing in the background technique.

[0006] The technical solution of the utility model: A heat-sealing mechanism of a packaging machine includes a support frame, a fixing plate, and a mounting plate;

[0007] The projection of the support frame is in a U shape. The support frame is located on one side of the mounting plate, and two fixing plates are symmetrically installed on the mounting plate along the width direction of the mounting plate;

[0008] A melting assembly for melting and connecting the packaging bags is arranged on the fixing plate;

[0009] A shearing assembly for shearing the melted packaging bags is arranged on the melting assembly;

[0010] A driving assembly for driving the melting assembly and the shearing assembly to work is arranged on the support frame.

[0011] Preferably, the driving assembly includes a bidirectional lead screw, a first lead screw nut, a second lead screw nut, a first slide bar, a second slide bar, and a motor;

[0012] Two sections of equally spaced threads with opposite directions are arranged on the outer peripheral surface of the bidirectional lead screw, which are divided into a first thread portion and a second thread portion. The first lead screw nut and the second lead screw nut are symmetrically installed on the bidirectional lead screw and respectively mesh with the first thread portion and the second thread portion;

[0013] Two ends of the bidirectional screw rod are respectively rotated to connect one end of the support frame and one side of the fixed plate close to one end of the support frame;

[0014] The first slide bar and the second slide bar respectively penetrate the first screw nut and the second screw nut along the height direction of the mounting plate and are slidably connected, and the first slide bar and the second slide bar are in opposite directions;

[0015] The fixed end of the motor is connected to the outer peripheral surface of the support frame, and the output end of the motor is connected to one end of the bidirectional lead screw close to the support frame.

[0016] Preferably, the melting assembly comprises a first mounting seat, a first connecting rod, a rotating member and a melting portion;

[0017] The first sliding rod is connected to a first mounting seat, one end of the first mounting seat is rotatably connected to one end of the first connecting rod, and the other end of the first connecting rod is rotatably connected to one end of the rotating member;

[0018] The center of one side of the rotating part is rotatably connected to the center of the fixed plate, and a melting part is installed on the outer peripheral surface of the rotating part close to the fixed plate.

[0019] Preferably, the shearing assembly comprises a second mounting seat, a second connecting rod and a shearing portion;

[0020] The second mounting seat is connected to the outer circumference of the second sliding rod, and one side of the second mounting seat is rotatably connected to one end of the second connecting rod, and the other end of the second connecting rod is rotatably connected to the other end of the rotating member;

[0021] A shearing portion is installed on the outer peripheral surface of the rotating member close to the second connecting rod, the shearing portion and the melting portion are oriented in the same direction, and the second mounting seat and the first mounting seat are oriented in opposite directions.

[0022] Preferably, the driving assembly, the melting assembly and the shearing assembly form a heat sealing mechanism. There are two heat sealing mechanisms in total, and the two heat sealing mechanisms are symmetrically installed at both ends of the support frame.

[0023] Preferably, the projection of the fixing plate is L-shaped.

[0024] Compared with the prior art, the above-mentioned technical scheme of the utility model has the following beneficial technical effects: by respectively installing the melting components at both ends of the support frame, and by synchronously starting the two motors to drive the bidirectional screw to drive the first screw nut and the second screw nut to move toward or away, so that the melting parts on both sides are close to each other, so that the packaging tape is sealed.

[0025] By setting up a shear component on the melting component, the melting part and the shear part are connected by a rotating part. At the same time, the center of the rotating part is rotationally connected to the center of the fixed plate. Thus, when the driving component drives the two melting parts towards each other, the two shear parts move away from each other. When the two melting parts move away from each other, the two shear parts move closer to each other to shear the fitted packaging bags, thereby reducing manual re-shearing and saving labor. Description of the Drawings

[0026] Figure 1 It is a three-dimensional view of a heat-sealing mechanism of a packaging machine proposed by the present utility model.

[0027] Figure 2 It is Figure 1 a three-dimensional view of the cooperative installation of the driving component, the melting component and the shear component in

[0028] Figure 3 It is Figure 2 a three-dimensional view of the partial enlargement at position A in

[0029] Reference numerals: 1, support frame; 2, bidirectional lead screw; 3, first lead screw nut; 4, second lead screw nut; 5, fixed plate; 6, first slide bar; 7, second slide bar; 8, first mounting seat; 9, second mounting seat; 10, first connecting rod; 11, second connecting rod; 12, rotating part; 13, melting part; 14, shear part; 15, motor. Detailed Embodiments

[0030] Embodiment 1

[0031] As Figure 1-3 shown, a heat-sealing mechanism of a packaging machine proposed by the present utility model includes a support frame 1, a fixed plate 5 and a mounting plate;

[0032] The projection of the support frame 1 is U-shaped. The support frame 1 is located on one side of the mounting plate, and two fixed plates 5 are symmetrically mounted on the mounting plate along the width direction of the mounting plate;

[0033] A melting component for melting and connecting the packaging bags is arranged on the fixed plate 5;

[0034] A shear component for shearing the melted packaging bags is arranged on the melting component;

[0035] A driving component for driving the melting component and the shear component to work is arranged on the support frame 1.

[0036] The driving component includes a bidirectional lead screw 2, a first lead screw nut 3, a second lead screw nut 4, a first slide bar 6, a second slide bar 7 and a motor 15;

[0037] The outer circumference of the bidirectional screw 2 is provided with two sections of threads equidistantly and facing oppositely, which are divided into a first threaded portion and a second threaded portion. The first screw nut 3 and the second screw nut 4 are symmetrically mounted on the bidirectional screw 2 and mesh with the first threaded portion and the second threaded portion respectively.

[0038] The two ends of the bidirectional screw rod 2 are respectively rotatably connected to one end of the support frame 1 and one side of the fixed plate 5 close to one end of the support frame 1;

[0039] The first slide bar 6 and the second slide bar 7 respectively penetrate the first screw nut 3 and the second screw nut 4 along the height direction of the mounting plate and are slidably connected. The first slide bar 6 and the second slide bar 7 are in opposite directions.

[0040] The fixed end of the motor 15 is connected to the outer peripheral surface of the support frame 1 , and the output end of the motor 15 is connected to one end of the bidirectional lead screw 2 close to the support frame 1 .

[0041] The driving assembly, the melting assembly and the shearing assembly form a heat sealing mechanism. There are two heat sealing mechanisms in total, and the two heat sealing mechanisms are symmetrically installed at both ends of the support frame 1.

[0042] The projection of the fixing plate 5 is L-shaped, so that the fixing plate 5 will not interfere with the movement of the bidirectional screw rod 2 during the rotation of the rotating member 12 .

[0043] Embodiment 2

[0044] like Figure 1-3 As shown, the heat sealing mechanism of a packaging machine proposed by the utility model, compared with the first embodiment, this embodiment further specifically discloses the specific structure of the melting component and the shearing component.

[0045] In this embodiment, the melting assembly includes a first mounting seat 8, a first connecting rod 10, a rotating member 12 and a melting portion 13;

[0046] The first slide bar 6 is connected to a first mounting seat 8, one end of the first mounting seat 8 is rotatably connected to one end of a first connecting rod 10, and the other end of the first connecting rod 10 is rotatably connected to one end of a rotating member 12;

[0047] The center of one side of the rotating part 12 is rotated to connect the center of the fixed plate 5, and a melting part 13 is installed on the outer peripheral surface of the rotating part 12 close to the fixed plate 5. By installing the melting components at both ends of the support frame 1, the two motors 15 are synchronously turned on to drive the bidirectional screw 2 to drive the first screw nut 3 and the second screw nut 4 to move toward or away, so that the melting parts 13 on both sides are close to each other, so that the packaging tape is sealed.

[0048] The shearing assembly includes a second mounting seat 9, a second connecting rod 11 and a shearing portion 14;

[0049] The second mounting seat 9 is connected to the outer circumference of the second sliding rod 7, and one side of the second mounting seat 9 is rotatably connected to one end of the second connecting rod 11, and the other end of the second connecting rod 11 is rotatably connected to the other end of the rotating member 12;

[0050] A shearing portion 14 is installed on the outer peripheral surface of the rotating member 12 close to the second connecting rod 11. The shearing portion 14 and the melting portion 13 are oriented in the same direction, and the second mounting seat 9 and the first mounting seat 8 are oriented in opposite directions. The melting portion 13 is connected to the shearing portion 14 through the rotating member 12, and the center of the rotating member 12 is rotated to connect the center of the fixed plate 5, so that when the driving component drives the two melting portions 13 in the direction, the two shearing portions 14 move away from each other. When the two melting portions 13 move away from each other, the two shearing portions 14 move closer to each other to shear the fitted packaging bags, thereby reducing manual re-cutting and saving labor.

[0051] In summary, in the present invention, the packaging film is first dropped at a uniform speed between the two melting parts 13, and the two motors 15 are simultaneously turned on. The two motors 15 respectively drive the two bidirectional screws 2 to rotate. When the bidirectional screw 2 rotates, the first screw nut 3 and the second screw nut 4 move toward or away from each other, thereby driving the first connecting rod 10 to extend and the second connecting rod 11 to retract, or the first connecting rod 10 to retract and the second connecting rod 11 to extend, thereby driving the two melting parts 13 to move toward or the two shearing parts to move toward each other, achieving a reciprocating melting and shearing effect, and completing the entire process.

[0052] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A heat sealing mechanism of a packaging machine, characterized in that: It includes a support frame (1), a fixing plate (5) and a mounting plate; The projection of the support frame (1) is U-shaped. The support frame (1) is located on one side of the mounting plate, and two fixing plates (5) are symmetrically mounted on the mounting plate along the width direction of the mounting plate; The fixing plate (5) is provided with a melting assembly for melting and connecting the packaging bags; The melting assembly is provided with a shearing assembly for shearing the melted packaging bags; The support frame (1) is provided with a driving assembly for driving the melting assembly and the shearing assembly to work.

2. The heat sealing mechanism of a packaging machine according to claim 1, characterized in that: The driving assembly includes a bidirectional lead screw (2), a first lead screw nut (3), a second lead screw nut (4), a first slide bar (6), a second slide bar (7) and a motor (15); Two sections of equally spaced threads with opposite directions are provided on the outer peripheral surface of the bidirectional lead screw (2), which are divided into a first thread portion and a second thread portion. The first lead screw nut (3) and the second lead screw nut (4) are symmetrically mounted on the bidirectional lead screw (2) and respectively engage with the first thread portion and the second thread portion; The two ends of the bidirectional lead screw (2) are respectively rotatably connected to one end of the support frame (1) and one side of the fixing plate (5) close to one end of the support frame (1); The first slide bar (6) and the second slide bar (7) respectively penetrate and slidably connect the first lead screw nut (3) and the second lead screw nut (4) along the height direction of the mounting plate, and the directions of the first slide bar (6) and the second slide bar (7) are opposite; The fixed end of the motor (15) is connected to the outer peripheral surface of the support frame (1), and the output end of the motor (15) is connected to one end of the bidirectional lead screw (2) close to the support frame (1).

3. The heat sealing mechanism of a packaging machine according to claim 2, characterized in that: The melting assembly includes a first mounting seat (8), a first connecting rod (10), a rotating member (12) and a melting portion (13); The first slide bar (6) is connected with a first mounting seat (8). One end of the first mounting seat (8) is rotatably connected to one end of the first connecting rod (10), and the other end of the first connecting rod (10) is rotatably connected to one end of the rotating member (12); One side center of the rotating member (12) is rotatably connected to the center of the fixing plate (5), and a melting portion (13) is mounted on the outer peripheral surface of the rotating member (12) close to the fixing plate (5).

4. The heat sealing mechanism of a packaging machine according to claim 3, characterized in that: The shearing assembly includes a second mounting seat (9), a second connecting rod (11) and a shearing portion (14); The second mounting seat (9) is connected to the outer peripheral surface of the second slide bar (7), and one side of the second mounting seat (9) is rotatably connected to one end of the second connecting rod (11). The other end of the second connecting rod (11) is rotatably connected to the other end of the rotating member (12); A shearing portion (14) is mounted on the outer peripheral surface of the rotating member (12) close to the second connecting rod (11). The shearing portion (14) and the melting portion (13) have the same direction, and the directions of the second mounting seat (9) and the first mounting seat (8) are opposite.

5. The heat sealing mechanism of a packaging machine according to claim 4, characterized in that: The driving assembly, the melting assembly and the shearing assembly form a heat-sealing mechanism. There are two heat-sealing mechanisms, and the two heat-sealing mechanisms are symmetrically mounted at both ends of the support frame (1).

6. The heat sealing mechanism of a packaging machine according to claim 2, characterized in that: The projection of the fixing plate (5) is L-shaped.

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