Transverse sealing mechanism of multi-row strip bag back sealing packaging machine

Abstract

A transverse sealing mechanism of a multi-row strip bag back sealing packaging machine comprises a mounting plate, a front cross beam and a rear cross beam, a transverse sealing mold is arranged on the rear cross beam, and the transverse sealing mechanism is characterized in that a transmission shaft is mounted on the rear side of the mounting plate through a supporting plate frame, and a servo motor is arranged on the supporting plate frame and is in transmission connection with the transmission shaft; sliding seats are symmetrically fixed to the two ends of the mounting plate, an inner guide column and an outer guide column are slidably mounted in the sliding seats respectively, the two ends of the transmission shaft are connected with the inner guide column and the outer guide column through a double-crank-link mechanism respectively, and the rear cross beam and the front cross beam are connected between the inner guide column and the outer guide column respectively. A plurality of groups of transverse sealing molds are uniformly distributed and are respectively mounted on the rear cross beam in a sliding manner; a pressure spring is arranged between the middle part of each transverse sealing mold and the rear cross beam; a heating plate is fixed to the inner side of the front cross beam, a plurality of silica gel aluminum plates are evenly distributed and fixed to the heating plate, and the silica gel aluminum plates correspond to the transverse sealing pressing blocks on the transverse sealing molds in a one-to-one mode. The mechanism is stable in action, low in noise, high in speed, uniform in sealing pressure and low in processing cost.

Description

Technical Field

[0001] The utility model belongs to packaging machinery, in particular to a transverse sealing mechanism of a multi-row strip bag back-sealing packaging machine. Background Art

[0002] The multi-row strip bag back-seal packaging machine usually includes an unwinding mechanism, a feeding mechanism, a longitudinal cutting mechanism, a longitudinal sealing mechanism, a transverse sealing mechanism and a punching mechanism, and is widely used in strip bag packaging of various foods or medicines.

[0003] The existing transverse sealing mechanism is mainly composed of cylinders, linear bearings, guide columns, transverse sealing front beams, transverse sealing rear beams, transverse sealing front molds, transverse sealing rear molds and heating tubes. During operation, the transverse sealing front mold and the transverse sealing rear mold move towards each other after heating. The movement is driven by two groups of 4 transverse sealing cylinders to achieve the sealing of the bottom and mouth of multiple rows of strip bags. This transverse sealing mechanism is mainly driven by cylinders, with high gas consumption, high working noise, low action frequency, and the overall sealing effect is affected by the fluctuation of compressed air; and the rear sealing mold is an integrated structure composed of multiple rows of modules, which requires extremely high processing accuracy. The sealing mesh of each row is often different in depth, affecting the qualified rate of finished products. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a transverse sealing mechanism for a multi-row strip bag back-sealing packaging machine with stable action, low noise, high speed, uniform sealing pressure and low processing cost.

[0005] In order to solve the above problems, the utility model adopts the following technical solutions:

[0006] A transverse sealing mechanism of a multi-row strip bag back-seal packaging machine comprises a mounting plate, a front crossbeam and a rear crossbeam, wherein a transverse sealing mould is arranged on the rear crossbeam, and the special feature thereof is that a transmission shaft is rotatably mounted on the rear side of the mounting plate through a support plate frame, and a servo motor is arranged on the support plate frame located in the middle and is in transmission connection with the transmission shaft;

[0007] Two sliding seats are symmetrically fixed at both ends of the mounting plate, and inner guide pillars and outer guide pillars arranged in parallel are slidably mounted in the two sliding seats respectively. The two ends of the transmission shaft are respectively connected to the inner and outer guide pillars through a double crank connecting rod mechanism, and the crank eccentricity directions of the double crank connecting rod mechanism are opposite. The rear crossbeam and the front crossbeam are respectively connected between the inner guide pillars and the outer guide pillars arranged symmetrically;

[0008] The transverse sealing molds are evenly distributed in multiple groups and are slidably installed on the rear cross beam through two guide components respectively. A pressure spring is provided between the middle part of each group of transverse sealing molds and the rear cross beam. A heating plate is fixed on the inner side of the front cross beam, and a heating tube is inserted in the heating plate. A number of silicone aluminum plates are evenly fixed on the heating plate, and the silicone aluminum plates correspond one by one to the transverse sealing pressure blocks on each group of transverse sealing molds.

[0009] As a further preference, the double crank connecting rod mechanism includes an eccentric shaft connected to one end of the transmission shaft, an eccentric block is fixedly connected to the outer end of the eccentric section of the eccentric shaft, connecting rods are respectively connected to the eccentric sections of the eccentric shaft and the eccentric block through bearings, and clamping blocks are respectively hinged at the front ends of the two connecting rods, and the clamping blocks are respectively clamped at the rear ends of the corresponding inner guide column and outer guide column.

[0010] As a further preference, the eccentric distances of the axes of the eccentric sections of the eccentric shaft and the eccentric block relative to the axis of the transmission shaft are equal and the eccentric directions are opposite.

[0011] As a further preference, the guide assembly includes a guide column and a guide sleeve which are plugged into each other, the guide sleeve is inserted into and fixed by screws in a mounting hole provided on the rear cross beam, the guide column passes through the guide sleeve and is threadedly connected to the transverse sealing mold, and a limiting cover is connected at the rear end of the guide column by screws to achieve the limiting of the transverse sealing mold.

[0012] As a further preference, the transverse sealing mold comprises a heating block and a pressure cover fixed on the heating block, two transverse sealing pressure blocks are arranged in parallel on the pressure cover, and a short heating tube is inserted on the heating block for heating the transverse sealing mold.

[0013] As a further preference, the silica gel aluminum plate is pressed tightly against mounting grooves evenly distributed on the heating plate by two pressing sheets.

[0014] As a further preference, connecting blocks are connected to both ends of the front cross beam through pins, and the front end of the outer guide column is plugged into the connecting block and fixed by screws to facilitate the installation of the front cross beam.

[0015] As a further preference, guide blocks are fixed on the outer sides of the two sliding seats respectively, and two guide rods are inserted on the guide blocks through sliding fit, and the front ends of the two guide rods are respectively inserted into the connecting blocks and fixed by screws.

[0016] The beneficial effects of the utility model are:

[0017] 1. A transmission shaft driven by a servo motor is rotatably installed on the rear side of the mounting plate through a support plate frame, and both ends of the transmission shaft are connected to the inner and outer guide pillars through double crank connecting rod mechanisms with opposite crank eccentricity directions, and the rear crossbeam and the front crossbeam are respectively connected between the symmetrically arranged inner guide pillars and outer guide pillars. Therefore, by driving the driven shaft to rotate through a servo motor, the front and rear crossbeams can be driven to move relative to each other, so that the corresponding silicone aluminum plates and the transverse sealing blocks can be reciprocated with interference fit, thereby realizing the transverse sealing action of the packaging material, with stable action and fast speed, and it is easier to achieve action matching under high-speed state, and the sealing pressure is uniform.

[0018] 2. Since the transverse sealing molds are evenly distributed in multiple groups and are slidably installed on the rear cross beam through two guide components, a pressure spring is provided between the middle of each group of transverse sealing molds and the rear cross beam; a number of silicone aluminum plates are evenly fixed on the heating plate, and the silicone aluminum plates correspond one by one to the transverse sealing pressure blocks on each group of transverse sealing molds; it can not only ensure that the transverse sealing mesh depth of each column of packaging materials is consistent, thereby ensuring the sealing stability and improving the qualified rate of finished products; but also has low noise, can reduce the processing precision requirements and reduce the processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a top view of the utility model.

[0020] Figure 2 yes Figure 1 Left view of .

[0021] Figure 3 It is a three-dimensional structural diagram of the utility model.

[0022] Figure 4 yes Figure 1 AA section view.

[0023] Figure 5 yes Figure 1 BB cross-sectional view.

[0024] Figure 6 yes Figure 1 CC cross-sectional view.

[0025] Figure 7 yes Figure 1 DD cross-sectional view.

[0026] In the figure: transverse sealing mold 1, outer guide column 2, rear cross beam 3, inner guide column 4, sliding seat 5, mounting plate 6, support plate frame 7, double crank connecting rod mechanism 8, transmission shaft 9, synchronous belt mechanism 10, bearing seat 11, servo motor 12, connecting sleeve 13, slider 14, guide block 15, guide rod 16, connecting block 17, heating plate 18, front cross beam 19, heating tube 20, guide sleeve 21, guide column 22, limit cover 23, stud 24, silicone aluminum plate 25, pressure spring 26, pressing sheet 27. Eccentric shaft 801, eccentric block 802, connecting rod 803, clamping block 804. DETAILED DESCRIPTION

[0027] like Figure 1-Figure 7 As shown, the utility model relates to a transverse sealing mechanism of a multi-row strip bag back-sealing packaging machine, comprising a mounting plate 6, a front crossbeam 19 and a rear crossbeam 3 arranged in parallel, and sliders 14 are symmetrically fixed on both sides of the front of the mounting plate 6 for sliding installation on the body of the packaging machine;

[0028] Three support plate frames 7 are fixed to the rear side of the mounting plate 6 by screws, a transmission shaft 9 is rotatably mounted between the three support plate frames 7 via a bearing seat 11 and a bearing, a servo motor 12 is mounted on the support plate frame 7 located in the middle, and an output end of the servo motor 12 is connected to the transmission shaft 9 via a synchronous belt mechanism 10.

[0029] Two L-shaped sliding seats 5 are symmetrically fixed at both ends in front of the mounting plate 6, and inner guide columns 4 and outer guide columns 2 arranged in parallel are slidably installed in the two sliding seats 5 through linear bearings respectively. Both ends of the transmission shaft 9 are connected to the inner and outer guide columns respectively through a double crank connecting rod mechanism 8, and the crank eccentricity directions of the double crank connecting rod mechanism 8 are opposite. The rear cross beam 3 is connected between the symmetrically arranged inner guide columns 4; the front cross beam 19 is connected between the symmetrically arranged outer guide columns 2.

[0030] Connecting blocks 17 are respectively inserted at both ends of the front cross beam 19 and connected by pins, and the front end of the outer guide column 2 is inserted into the connecting block 17 and fixed by screws, so as to facilitate the installation of the front cross beam 19. Guide blocks 15 are respectively fixed by screws on the outsides of the two sliding seats 5, and two guide rods 16 are inserted on the guide blocks 15 by sliding fit. The front ends of the two guide rods 16 are respectively inserted into the connecting blocks 17 and fixed by screws, which are used to assist the sliding guide of the front cross beam 19.

[0031] A transverse sealing mold 1 is provided on the rear cross beam 3. The transverse sealing mold 1 is evenly distributed in multiple groups and is slidably installed on the rear cross beam 3 through two guide components respectively. A pressure spring 26 is provided between the middle part of each group of transverse sealing molds 1 and the rear cross beam 3; two heating plates 18 are fixed with screws on the inner side of the front cross beam 19 through multiple evenly distributed studs 24, and two heating tubes 20 are respectively inserted in the heating plates 18 along the longitudinal direction thereof. A plurality of silicone aluminum plates 25 are evenly distributed and fixed on the heating plates 18, and the silicone aluminum plates 25 are respectively pressed in the evenly distributed installation grooves on the heating plates 18 through two pressing sheets 27, and the silicone aluminum plates 25 correspond one by one to the transverse sealing pressing blocks on each group of transverse sealing molds 1.

[0032] The guide assembly includes a guide column 22 and a guide sleeve 21 which are plugged into each other. The guide sleeve 21 is inserted into and fixed in a mounting hole provided on the rear cross beam 3 by screws. The guide column 22 passes through the guide sleeve 21 and is threadedly connected to the transverse sealing mold 1. A limiting cover 23 is connected at the rear end of the guide column 22 by screws to achieve the limiting of the transverse sealing mold 1.

[0033] The transverse sealing mold 1 includes a heating block 101 and a grooved pressure cover 103 fixed on the heating block 101 by screws, and two transverse sealing pressure blocks 104 are arranged side by side on the outer end surface of the pressure cover 103. The outer end surface of the transverse sealing pressure block 104 is corrugated, and two short heating tubes 102 are inserted on the heating block 101 for heating the transverse sealing mold 1.

[0034] The double crank connecting rod mechanism 8 includes an eccentric shaft 801 connected to one end of the transmission shaft 9 through a connecting sleeve 13, an eccentric block 802 is fixedly connected to the outer end of the eccentric section of the eccentric shaft, connecting rods 803 are connected to the eccentric sections of the eccentric shaft and the eccentric block through bearings, and clamping blocks 804 are hinged at the front ends of the two connecting rods 803 through pins, respectively, and the clamping blocks 804 are clamped at the rear ends of the corresponding inner guide column 4 and outer guide column 2. The eccentric distances of the eccentric sections of the eccentric shaft 801 and the eccentric block 802 relative to the axis of the transmission shaft 9 are equal and the eccentric directions are opposite.

[0035] During installation, the transverse sealing mechanism is slidably mounted on the body of the packaging machine through sliders on both sides of the front of the mounting plate 6, and is connected to the body through an electric screw mechanism (not shown in the figure).

[0036] When working, the specific steps are as follows:

[0037] 1. The horizontal sealing mold 1 and the silicone aluminum plate 25 are heated by an external power supply through a heating tube and a short heating tube, and a plurality of packaging materials to be horizontally sealed pass through between the horizontal sealing mold 1 and the silicone aluminum plate 25 respectively;

[0038] 2. The controller of the packaging machine controls the servo motor 12 to start, and the synchronous belt mechanism 10 drives the transmission shaft 9 to rotate. When the transmission shaft 9 rotates, the double crank connecting rod mechanism 8 drives the inner guide column 4 and the outer guide column 2 to slide in the opposite direction, thereby driving the front crossbeam 19 and the rear crossbeam 3 to move toward each other, so that the silicone aluminum plate 25 is pressed with the corresponding cross-sealing block to achieve cross-sealing of the packaging material; at this time, the servo motor 12 stops rotating, and the electric screw mechanism is started at the same time to drive the cross-sealing mechanism to slide downward along the body of the packaging machine, thereby achieving traction of the packaging material while achieving cross-sealing;

[0039] 3. When the transverse sealing mechanism slides downward along the body of the packaging machine to the bottom dead point, the servo motor 12 is controlled to start, and the front crossbeam 19 and the rear crossbeam 3 are driven to move in the opposite direction through the transmission shaft 9 and the double crank connecting rod mechanism 8, so that the silicone aluminum plate 25 is separated from the corresponding transverse sealing block, and the transversely sealed packaging material is released;

[0040] 4. Control the electric screw mechanism to start in reverse, drive the horizontal sealing mechanism to slide upward along the body of the packaging machine, return to the initial position, and complete a horizontal sealing;

[0041] 5. Repeat steps 2 to 4 to achieve continuous horizontal sealing of the packaging material.

[0042] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A transverse sealing mechanism of a multi-row strip bag back-seal packaging machine, comprising a mounting plate, a front crossbeam and a rear crossbeam, wherein a transverse sealing mold is arranged on the rear crossbeam, and wherein: A transmission shaft is rotatably mounted on the rear side of the mounting plate through a support plate frame, and a servo motor is provided on the support plate frame located in the middle and is transmission-connected to the transmission shaft; Two sliding seats are symmetrically fixed at both ends of the mounting plate, and inner guide pillars and outer guide pillars arranged in parallel are slidably mounted in the two sliding seats respectively. The two ends of the transmission shaft are respectively connected to the inner and outer guide pillars through a double crank connecting rod mechanism, and the crank eccentricity directions of the double crank connecting rod mechanism are opposite. The rear crossbeam and the front crossbeam are respectively connected between the inner guide pillars and the outer guide pillars arranged symmetrically; The transverse sealing molds are evenly distributed in multiple groups and are slidably installed on the rear cross beam through two guide components respectively. A pressure spring is provided between the middle part of each group of transverse sealing molds and the rear cross beam. A heating plate is fixed on the inner side of the front cross beam, and a heating tube is inserted in the heating plate. A number of silicone aluminum plates are evenly fixed on the heating plate, and the silicone aluminum plates correspond one by one to the transverse sealing pressure blocks on each group of transverse sealing molds.

2. According to claim 1, the transverse sealing mechanism of the multi-row strip bag back-seal packaging machine is characterized by: The double crank connecting rod mechanism includes an eccentric shaft connected to one end of the transmission shaft, an eccentric block is fixedly connected to the outer end of the eccentric section of the eccentric shaft, connecting rods are respectively connected to the eccentric sections of the eccentric shaft and the eccentric block through bearings, and clamping blocks are respectively hinged at the front ends of the two connecting rods, and the clamping blocks are respectively clamped at the rear ends of the corresponding inner guide column and outer guide column.

3. The transverse sealing mechanism of the multi-row strip bag back-seal packaging machine according to claim 2 is characterized by: The eccentric distances of the eccentric sections of the eccentric shaft and the eccentric block relative to the axis of the transmission shaft are equal and the eccentric directions are opposite.

4. The transverse sealing mechanism of the multi-row strip bag back-seal packaging machine according to claim 1 is characterized by: The guide assembly includes a guide column and a guide sleeve which are plugged into each other. The guide sleeve is inserted into and fixed in a mounting hole provided on the rear cross beam by screws. The guide column passes through the guide sleeve and is threadedly connected to the transverse sealing mold. A limiting cover is connected to the rear end of the guide column by screws to achieve the limiting of the transverse sealing mold.

5. The transverse sealing mechanism of the multi-row strip bag back-seal packaging machine according to claim 1 or 4, characterized in that: The transverse sealing mold comprises a heating block and a pressure cover fixed on the heating block, two transverse sealing pressure blocks are arranged in parallel on the pressure cover, and a short heating tube is inserted on the heating block for heating the transverse sealing mold.

6. The transverse sealing mechanism of the multi-row strip bag back-seal packaging machine according to claim 1 is characterized by: The silica gel aluminum plates are respectively pressed tightly into the installation grooves evenly distributed on the heating plate through two pressing sheets.

7. The transverse sealing mechanism of the multi-row strip bag back-seal packaging machine according to claim 1 is characterized by: Connecting blocks are connected to both ends of the front cross beam through pins, and the front end of the outer guide column is plugged into the connecting block and fixed by screws, so as to facilitate the installation of the front cross beam.

8. The transverse sealing mechanism of the multi-row strip bag back-sealing packaging machine according to claim 7 is characterized in that: Guide blocks are fixed on the outer sides of the two sliding seats respectively, and two guide rods are inserted on the guide blocks through sliding cooperation. The front ends of the two guide rods are respectively inserted into the connecting blocks and fixed by screws.

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