Vertical packaging machine, film-drawing belt mechanism and film-drawing belt polishing device

Abstract

The utility model provides a film-drawing belt polishing device which comprises a telescopic mechanism and a polishing block support fixedly connected with the telescopic mechanism, the polishing block support is provided with a polishing block installation portion, and the polishing block installation portion is provided with a hole used for containing a polishing block. The utility model further provides a film-drawing belt mechanism provided with the polishing device. The utility model further provides a vertical packaging machine using the film-drawing belt mechanism. The film-drawing belt polishing device can be used for polishing the film-drawing belt regularly and automatically, and the polishing force can be adjusted. And when the grinding block is worn to a certain degree, replacement of the grinding block can be prompted.

Description

Technical Field

[0001] The present application relates to a vertical packaging machine, and in particular to a grinding device for a film-drawing belt of a packaging machine. Background Art

[0002] The automatic vertical packaging machine is suitable for the packaging of granular, short strips and powdered strips. During the packaging process, the plastic film passes through the film cylinder to form a cylinder, and the sides are sealed by the heat longitudinal sealing device. At the same time, the packaging material is injected into the bag, and the transverse sealing mechanism cuts the packaging length and position according to the color code photoelectric detection device.

[0003] Usually, a film-pulling belt is used to pull plastic film for packaging. After a long period of use, the film-pulling belt becomes worn and smooth, which reduces the friction between the belt and the film, resulting in slippage between the film-pulling belt and the packaging material. Therefore, the working surface of the film-pulling belt needs to be polished regularly.

[0004] Currently, the grinding operation is performed manually by operators, which requires production to be stopped during the grinding process, reducing production efficiency. Utility Model Content

[0005] The purpose of the present application is to provide a grinding device for a film-drawing belt of a vertical packaging machine.

[0006] According to one aspect of the present application, a film-pulling belt grinding device includes a telescopic mechanism and a grinding block bracket fixedly connected to the telescopic mechanism, wherein the grinding block bracket has a grinding block mounting portion, and the grinding block mounting portion is provided with a hole for accommodating a grinding block.

[0007] Wherein, a pushing mechanism for pushing the grinding block is provided at the rear side of the grinding block mounting portion, wherein the pushing mechanism comprises a grinding block mounting plate, an end plate fixed to the grinding block mounting portion, and a spring provided between the grinding block mounting plate and the end plate.

[0008] Furthermore, the rear side of the grinding block mounting plate has a guide column, the spring is sleeved on the guide column, and the end of the guide column is configured to pass through the hole on the end plate. In addition, the grinding block mounting plate has a limiting flange.

[0009] The pushing mechanism is also provided with at least one spring preload force adjusting screw rod, which connects the end plate and the grinding block mounting portion.

[0010] Furthermore, the telescopic mechanism is a multi-piston cylinder

[0011] According to another aspect of the present application, a film-drawing belt mechanism includes a film-drawing belt and the film-drawing belt polishing device, wherein the relative position between the telescopic mechanism and the film-drawing belt is fixed.

[0012] Wherein, an adjusting pad is provided between the telescopic mechanism and the grinding block bracket.

[0013] According to yet another aspect of the present application, a vertical packaging machine comprises the aforementioned film-drawing belt mechanism.

[0014] The grinding device provided by the present application can be used to perform regular and automatic grinding of the film-drawing belt, and the grinding intensity can be adjusted. When the grinding block is worn to a certain extent, it can prompt to replace the grinding block. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of a film pulling belt mechanism according to an embodiment of the present application.

[0016] Figure 2 yes Figure 1 Schematic diagram of the grinding device in the illustrated embodiment.

[0017] Figure 3 yes Figure 2 Schematic top view of the illustrated embodiment.

[0018] Figure 4 It is a schematic diagram of the telescopic mechanism and the grinding block bracket.

[0019] Figure 5 It is a schematic diagram of the grinding blocks and the push mechanism.

[0020] 10 grinding block, 20 film pulling belt, 30 fixed bracket, 100 grinding belt device, 110 telescopic mechanism, 120 grinding block bracket, 130 adjusting pad, 140 pushing mechanism, 112 piston rod, 122 grinding block mounting part, 124 hole, 142 grinding block mounting plate, 1422 limiting flange, 1424 guide column, 144 spring, 146 end plate. DETAILED DESCRIPTION

[0021] The specific implementation of the present application is described below with reference to the accompanying drawings.

[0022] In this application, the term "front" refers to the direction toward the film-pulling belt, the term "rear" refers to the direction away from the film-pulling belt, the term "thickness" refers to the dimension in the front-to-back direction, the term "pitch" refers to the distance in the front-to-back direction, and the term "stroke" refers to the stroke in the front-to-back direction.

[0023] Figure 1 A film-drawing belt mechanism with a grinding device is shown, which can be used in a vertical packaging machine.

[0024] Reference Figure 2 The grinding belt device 100 includes a telescopic mechanism 110 and a grinding block bracket 120 .

[0025] The telescopic mechanism 110 can be an electric, pneumatic or hydraulic mechanism, for example, an electric worm gear mechanism, an air cylinder, or a hydraulic cylinder, as long as it can provide a driving force to push the grinding block 120 to move. The grinding block bracket 120 is fixedly connected to the movable part of the telescopic mechanism 110, for example, the worm of the worm gear mechanism, the piston rod of the air cylinder, or the piston rod of the hydraulic cylinder. Figure 1-5 In the embodiment shown, the telescopic mechanism 110 is a cylinder, and the grinding block bracket 120 is fixedly connected to the piston rod 112 of the cylinder. Figure 3 The telescopic mechanism 110 is a multi-piston cylinder so as to evenly apply force to the grinding block 120. In one example, an adjustment pad 130 is provided between the grinding block 120 and the cylinder rod.

[0026] The grinding block bracket 120 has a grinding block mounting portion 122, on which a hole 124 for accommodating the grinding block 10 is provided. Figure 4 .

[0027] Further, a pushing mechanism 140 for pushing the grinding block 10 is provided at the rear side of the grinding block mounting portion 122. The pushing mechanism 140 includes a grinding block mounting plate 142, a spring 144 and an end plate 146. The end plate 146 is fixed to the grinding block mounting portion 122 by a screw (not shown in the figure), and the screw also serves as a spring preload adjustment screw.

[0028] The grinding block 10 is installed on the front side of the grinding block mounting plate 142, and its shape and size are configured to be compatible with the hole 124. The grinding block mounting plate 142 is provided with a limiting flange 1422, which is larger than the hole 124. The limiting flange 1422 is used to limit the position where the pushing mechanism pushes the grinding block forward.

[0029] The rear side of the grinding block mounting plate 142 has a guide post 1424, and the spring 144 is sleeved on the guide post 1424. The end of the guide post 1424 passes through a hole (not shown) on the end plate 146.

[0030] The telescopic mechanism 100 is fixedly connected to the fixed bracket 30. The fixed bracket 30 is fixed to the rotating shaft of the film-drawing belt, so that the relative position between the telescopic mechanism and the film-drawing belt is fixed, so that the piston rod stroke of the telescopic mechanism can be associated with the distance between the grinding block 10 and the film-drawing belt 20. The distance between the grinding block 10 and the film-drawing belt 20 can be adjusted by adjusting the thickness of the set adjustment pad 130.

[0031] In the non-working state, that is, when the film-drawing belt is not being polished, the piston rod 112 of the telescopic mechanism 110 is in an extended state, so that the polishing block 10 and the film-drawing belt 20 are in a disengaged state. At this time, under the action of the spring 144, the limiting flange 1422 of the polishing block mounting plate 142 abuts against the polishing block mounting portion. Figure 2 and 3 The distance between the end plate 146 and the grinding block mounting portion 122 can be adjusted by the spring preload adjustment screw, thereby adjusting the compression degree of the spring in the initial state, and further adjusting the spring preload.

[0032] In the working state, that is, when the film-drawing belt is being polished, the piston rod 112 of the telescopic mechanism 110 is in a contracted state, so that the polishing block 110 is in contact with the film-drawing belt 20 .

[0033] Since the telescopic mechanism 110 is fixed to the film-drawing belt bracket 30, when the stroke of its piston rod 112 is greater than the distance between the grinding block 10 and the film-drawing belt 20, in the working state, the film-drawing belt 20 will push the grinding block 10 backward, thereby compressing the spring 144. When the elastic force generated by the compression of the spring 144 is balanced with the force applied to the grinding block 10 by the film-drawing belt 20, the position of the grinding block 10 will remain stable. In this way, the elastic force of the spring is equivalent to pressing the grinding block 10 on the grinding belt 20, thereby performing grinding.

[0034] As mentioned above, the distance between the grinding block 10 and the film-drawing belt 20 can be adjusted by configuring the thickness of the adjustment pad 130, so that the degree of compression of the spring 144 in the working state can be adjusted.

[0035] At the same time, in the working state, since the grinding block 10 is pushed backward by the film-pulling belt 20 , the limiting flange 1422 of the grinding block mounting plate 142 is also pushed away from the grinding block mounting portion 122 .

[0036] When the grinding block 120 is worn, its thickness decreases, so that the distance of the spring 144 being compressed in the working state decreases, and the distance between the limit flange 1422 and the grinding block mounting portion 122 decreases. When the grinding block 10 is worn to a certain extent, so that the limit flange 1422 can still abut against the grinding block mounting portion 122 in the working state, the grinding block 10 needs to be replaced.

[0037] In the above description, the details of the technical solution of the present invention are explained. However, those skilled in the art can understand that the present invention is not limited to the specific details listed in the above embodiments, but can be changed within the scope defined by the claims.

Claims

1. A film-pulling belt polishing device, characterized in that: The device comprises a telescopic mechanism and a grinding block bracket fixedly connected to the telescopic mechanism, wherein the grinding block bracket has a grinding block mounting portion, the grinding block mounting portion is provided with a hole for accommodating the grinding block, wherein the rear side of the grinding block mounting portion is provided with a pushing mechanism for pushing the grinding block, and the pushing mechanism comprises a grinding block mounting plate, an end plate fixed to the grinding block mounting portion, and a spring arranged between the grinding block mounting plate and the end plate.

2. The film-drawing belt grinding device according to claim 1, characterized in that: The rear side of the grinding block mounting plate is provided with a guide column, the spring is sleeved on the guide column, and the end of the guide column is configured to pass through the hole on the end plate.

3. The film-drawing belt grinding device according to claim 1 or 2, characterized in that: The grinding block mounting plate has a limiting flange.

4. The film-drawing belt grinding device according to claim 1 or 2, characterized in that: The pushing mechanism is also provided with at least one spring preload force adjusting screw rod, which connects the end plate and the grinding block mounting portion.

5. The film-drawing belt grinding device according to claim 1, characterized in that: The telescopic mechanism is a multi-piston cylinder.

6. A film-drawing belt mechanism, comprising a film-drawing belt and a film-drawing belt polishing device according to any one of claims 1 to 5, characterized in that: The relative position between the telescopic mechanism and the film-drawing belt is fixed.

7. The film-pulling belt mechanism according to claim 6, characterized in that: An adjusting pad is provided between the telescopic mechanism and the grinding block bracket.

8. A vertical packaging machine, characterized in that: The vertical packaging machine includes the film-drawing belt mechanism according to claim 6 or 7.

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