A drum film output mechanism and a film winding vehicle

Abstract

The utility model discloses a kind of membrane exit mechanism and film winding vehicle of drum, it is related to packaging equipment technical field, including membrane exit drum, the drum support being set on frame body, membrane exit drum is set on the other end of frame body, the distance of the axis of membrane exit drum and the axis of the deceleration drum is 40% to 60% of film winding vehicle swing arm length. In the utility model, membrane exit drum is close to the middle position of swing arm, the turning radius of membrane exit drum is reduced, i.e. the turning radius of membrane exit point is reduced, the turning radius of membrane exit point is greatly reduced, the length of film pulled out can be significantly reduced when film winding vehicle turns.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment technology, and in particular to a roller film dispensing mechanism and a film wrapping cart. Background Technology

[0002] In the packaging industry, stretch wrapping carts are crucial equipment for wrapping products with thin films, and the performance of their film dispensing mechanism has a key impact on packaging effectiveness and efficiency. Currently, common stretch wrapping cart designs have many drawbacks.

[0003] Existing film dispensing mechanisms typically place the unwinding mechanism and the dispensing mechanism on opposite sides of the roller support, with the dispensing mechanism positioned closer to the unwinding mechanism. The roller support is hinged to the swing arm of the wrapping trolley. In practical use, this layout causes the roller support to rotate significantly when the wrapping trolley turns. During this process, the film is stretched excessively due to the swing arm's rotation, resulting in excessive film dispensing. Excessive film dispensing not only wastes film and increases packaging costs but can also lead to problems such as looseness and wrinkles during wrapping, affecting packaging quality. Utility Model Content

[0004] The purpose of this invention is to provide a roller film output mechanism and a film wrapping machine to solve the above-mentioned technical problems.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A film delivery mechanism includes a film delivery roller, a roller support mounted on a frame, a film placement support mounted on the roller support, and a reduction roller. The reduction roller is located at one end of the frame and close to the film placement support, while the film delivery roller is located at the other end of the frame. The distance between the axis of the film delivery roller and the axis of the reduction roller is 40% to 60% of the length of the wrapping machine's swing arm.

[0007] Preferably, a deceleration mechanism is provided at one end of the deceleration roller. The deceleration mechanism includes a support, a first friction plate, a second friction plate, and an elastic guide mechanism. The first friction plate is provided on the roller shaft at one end of the deceleration roller, the support is provided on the roller bracket, and the elastic guide mechanism is provided on the support. The elastic guide mechanism is connected to the second friction plate, and the first friction plate is in contact with the second friction plate.

[0008] As a further preferred embodiment, the elastic guiding mechanism includes a guide shaft and a first spring. One end of the guide shaft is detachably connected to the support, and the other end of the guide shaft is connected to the second friction plate. The first spring is provided on the guide shaft, and both ends of the first spring are in contact with the support and the second friction plate.

[0009] As a further preferred embodiment, the system also includes a fixed base through which the roller shaft passes, and the fixed base is connected to the roller support.

[0010] Preferably, the roller support includes a support body, a cover and side plates, the cover and the side plates are disposed on both sides of the support body, and the deceleration roller is connected to the side plates and the cover.

[0011] As a further preferred embodiment, the membrane placement bracket includes a support shaft and a base, the base being mounted on the side plate, and one end of the support shaft being connected to the base.

[0012] As a further preferred embodiment, the system also includes an elastic adjustment mechanism, which is provided on the support shaft.

[0013] As a further preferred embodiment, the elastic adjustment mechanism includes a second spring and a sliding block, the second spring and the sliding block being sleeved on the support shaft, one end of the second spring being connected to the base, and the other end of the second spring abutting against the sliding block.

[0014] A film-wrapping machine includes the aforementioned roller film-discharging mechanism.

[0015] The above technical solution has the following advantages or beneficial effects:

[0016] (1) In this utility model, the film placement bracket and the film delivery roller are placed at both ends of the roller bracket, and the roller bracket is hinged to the swing arm of the wrapping machine. At this time, the film delivery roller is close to the middle position of the swing arm, which reduces the turning radius of the film delivery roller, that is, reduces the turning radius of the film delivery point, greatly reduces the turning radius of the film delivery point, and the length of the film pulled out can be significantly reduced when the wrapping machine turns.

[0017] (2) In this utility model, by setting the deceleration mechanism and the deceleration roller, the rotation speed of the deceleration roller can be adjusted according to the operating state, effectively buffering the change of film tension.

[0018] (3) In this utility model, the elastic adjustment mechanism enables the film placement bracket to better adapt to different sizes of wound film rolls, making it more adaptable. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the roller film dispensing mechanism in this utility model;

[0020] Figure 2 This is a schematic diagram of the gear reduction mechanism and the gear reduction roller cooperating in the roller film dispensing mechanism of this utility model;

[0021] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a diagram showing the usage state of the roller film dispensing mechanism in this utility model.

[0023] In the diagram: 1. Roller support; 101. Support body; 102. Cover; 103. Side plate; 2. Film delivery roller; 3. Film placement support; 301. Support shaft; 302. Base; 303. Elastic adjustment mechanism; 304. Second spring; 305. Sliding block; 4. Deceleration roller; 5. Deceleration mechanism; 501. Support; 502. First friction plate; 503. Second friction plate; 504. Elastic guide mechanism; 505. Guide shaft; 506. First spring; 507. Fixed seat; 6. Roller shaft; 7. Film wrapping cart; 8. Swing arm; 9. Roller film delivery mechanism; 10. Frame. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Figure 1 This is a schematic diagram of the roller film dispensing mechanism in this utility model; Figure 2This is a schematic diagram of the gear reduction mechanism and the gear reduction roller cooperating in the roller film dispensing mechanism of this utility model; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 This is a diagram showing the usage state of the roller film dispensing mechanism in this utility model. Please refer to [link / reference]. Figures 1 to 4 The diagram illustrates a preferred embodiment of a film delivery mechanism, comprising a film delivery roller 2, a roller support 1 mounted on a frame 10, a film placement support 3 mounted on the roller support 1, and a reduction roller 4 disposed at one end of the roller support 1, close to the film placement support 3. The film delivery roller 2 is disposed at the other end of the roller support 1. The distance between the axis of the film delivery roller 2 and the axis of the reduction roller 4 is 40% to 60% of the length of the swing arm 8 of the wrapping cart. This dimensional proportion ensures that when the frame 10 is hinged to the end of the swing arm 8 of the wrapping cart 7, the film delivery roller 2 is positioned near the middle of the swing arm 8. In a preferred embodiment, the distance between the axis of the film delivery roller 2 and the axis of the reduction roller 4 is 600 mm, and the length of the swing arm 8 is 1050 mm. In another embodiment of this invention, the distance between the axis of the film delivery roller 2 and the axis of the reduction roller 4 is approximately 40% of the length of the swing arm 8.

[0028] See Figure 1 As shown, the film placement bracket 3 and the film delivery roller 2 are positioned at both ends of the roller bracket 1. The film on the film placement bracket 3 sequentially passes around the deceleration roller 4 and the film delivery roller 2. Compared to the traditional arrangement where the unwinding mechanism and the delivery mechanism are on the same side and close to each other, this layout fundamentally changes the film conveying path. When the wrapping cart 7 turns, because the film placement bracket 3 and the film delivery roller 2 are located at opposite ends, the turning radius of the film delivery point becomes smaller, and the length of the wrapping film pulled out by the rotation of the swing arm 8 is significantly reduced, thereby effectively controlling the amount of film delivered.

[0029] See Figure 1 As shown, the film delivery roller 2 is located at one end of the roller support 1, while the film placement bracket 3 and the deceleration roller 4 are located at the other end of the roller support 1 and distributed on both sides of the roller support 1. During installation, the other end of the roller support 1 is hinged to the swing arm 8 of the wrapping machine 7. See [link to details] for more information. Figure 4 As shown, Figure 4 The middle section shows the operational state of the film delivery mechanism 9 and the swing arm 8 of the wrapping cart 7. The film placement bracket 3 is used to place the wrapping film roll. The reduction mechanism 5 is used to reduce the speed of the reduction roller 4, so that the speed of the reduction roller 4 is lower than the speed of the film delivery roller 2, thus ensuring that the wrapping film is always in a stretched state.

[0030] Furthermore, as a preferred embodiment, a deceleration mechanism 5 is provided at one end of the deceleration roller 4. The deceleration mechanism 5 includes a support 501, a first friction plate 502, a second friction plate 503, and an elastic guide mechanism 504. The first friction plate 502 is provided on the roller shaft 6 at one end of the deceleration roller 4, and the support 501 is provided on the roller bracket 1. The elastic guide mechanism 504 is provided on the support 501 and connected to the second friction plate 503. The first friction plate 502 is in contact with the second friction plate 503. In this embodiment, the deceleration function is achieved by using the friction between the two friction plates. When the wrapping machine 7 turns, the swing arm 8 drives the roller bracket 1 to rotate, and the speed of the deceleration roller 4 increases. At this time, the friction between the first friction plate 502 and the second friction plate 503 increases, thereby slowing down the rotation speed of the deceleration roller 4 and further inhibiting the film from being overstretched.

[0031] Furthermore, as a preferred embodiment, the elastic guiding mechanism 504 includes a guide shaft 505 and a first spring 506. One end of the guide shaft 505 is detachably connected to the support 501, and the other end of the guide shaft 505 is connected to the second friction plate 503. The first spring 506 is mounted on the guide shaft 505, and both ends of the first spring 506 contact the support 501 and the second friction plate 503. In this embodiment, the elastic guiding mechanism 504 plays a role in adjusting the friction force. The elastic guiding mechanism 504 consists of a guide shaft 505 and a first spring 506. One end of the guide shaft 505 is detachably connected to the support 501, and the other end is connected to the second friction plate 503. The first spring 506 is sleeved on the guide shaft 505, and both ends contact the support 501 and the second friction plate 503, respectively. When the speed of the reduction roller 4 changes, the first spring 506 can elastically extend and retract according to the force, so that the friction force between the second friction plate 503 and the first friction plate 502 is kept within a suitable range, ensuring the stability of the deceleration effect. One end of the guide shaft 505 is provided with an external thread for installing a nut. See [link / reference]. Figure 3 As shown, the guide shaft 505 can be moved by tightening the nut. The guide shaft 505 drives the second friction plate 503 away from or closer to the first friction plate 502, adjusting the contact force between the two friction plates, which facilitates the adjustment of the speed of the reduction roller 4.

[0032] Furthermore, as a preferred embodiment, it also includes a fixing seat 507, through which the roller shaft 6 passes, and the fixing seat 507 is connected to the roller support 1. See also Figure 3 As shown, the fixed seat 507 has a threaded hole for installing bolts. The fixed seat 507 can be fixed to the inner wall of the cover 102 by bolts. This facilitates the limiting of the roller shaft 6 and prevents the roller shaft 6 from shaking, so that the first friction plate 502 can be aligned with the second friction plate 503.

[0033] Furthermore, as a preferred embodiment, the roller support 1 includes a support body 101, a cover 102, and side plates 103. The cover 102 and side plates 103 are disposed on both sides of the support body 101, and the reduction roller 4 is connected to the side plates 103 and the cover 102. See also Figure 1 As shown, the film-exit roller 2 is located at one end of the support body 101, while the cover 102 and side plates 103 are located on both sides of the other end of the support body 101, and the cover 102 and side plates 103 are welded to the support body 101 respectively. The two ends of the reduction roller 4 can be rotatably connected to the cover 102 and side plates 103 through the roller shaft 6. The support 501 in the reduction mechanism 5 is welded to the outer wall of the cover 102, and the fixing seat 507 is connected to the inner wall of the cover 102 by bolts.

[0034] Furthermore, as a preferred embodiment, the membrane placement bracket 3 includes a support shaft 301 and a base 302. The base 302 is mounted on the side plate 103, and one end of the support shaft 301 is connected to the base 302. See also Figure 1 As shown, it also includes an elastic adjustment mechanism 303, which is mounted on the support shaft 301. The elastic adjustment mechanism 303 includes a second spring 304 and a sliding block 305. The second spring 304 and the sliding block 305 are sleeved on the support shaft 301. One end of the second spring 304 is connected to the base 302, and the other end of the second spring 304 abuts against the sliding block 305. In this embodiment, the elastic adjustment mechanism 303 can automatically adjust the position of the slider according to the length of the wrapping film roll, so that the slider can always be in contact with the end face of the wrapping film roll. Since the second spring 304 and the slider abut against each other, it will not affect the normal rotation of the wrapping film roll. Because the slider is in contact with the wrapping film roll, the wrapping film roll can rotate normally when the wrapping film is pulled, and the wrapping film roll will not rotate due to inertia after the machine stops.

[0035] The above description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention. Based on the above embodiments, the present invention also provides a wrapping cart 7, which includes a roller film dispensing mechanism 9. See details. Figure 4 As shown, the frame 10 in the roller film delivery mechanism 9 can be hinged to the swing arm 8 of the wrapping cart 7 via a hinge structure. This hinge structure and the frame 10 can be connected by bolts.

[0036] In use, the film delivery roller 2 rotates under the action of an external motor, driving the stretching film to move. The stretching film passes around the reduction roller 4. Under the action of the reduction mechanism 5, the speed of the reduction roller 4 is lower than that of the film delivery roller 2, ensuring that the stretching film is always in a stretched state. The external motor can be bolted to the outer wall of the roller support 1. The motor can be connected to an external controller, which allows setting the motor's control parameters, such as controlling the motor speed.

[0037] During installation, the roller bracket 1 is hinged to the swing arm 8 of the wrapping cart 7 to ensure a firm connection between the roller bracket 1 and the swing arm 8 of the wrapping cart 7, and accurate relative positions of all components. After installation, debugging is performed. First, rotate the film delivery roller 2 and the reduction roller 4 to check for smooth rotation and to detect any interference between components. Then, place the wrapping film roll on the support shaft 301 of the film placement bracket 3 to simulate the working process of the wrapping cart 7 and observe the conveying of the wrapping film as it passes through the reduction roller 4 and the film delivery roller 2. Next, adjust the elastic guide mechanism 504 to achieve optimal deceleration and film tension. For example, by rotating the nut to adjust the pre-compression of the first spring 506, the friction between the first friction plate 502 and the second friction plate 503 is changed, thereby adjusting the deceleration degree of the reduction roller 4. After multiple adjustments, ensure that the roller film delivery mechanism 9 can work stably and efficiently to meet the film delivery requirements during the packaging process.

[0038] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drum film delivery mechanism comprising a film delivery drum, a drum support provided on a frame, a film placement support provided on the drum support, characterized in that, It also includes a reduction roller, which is disposed at one end of the roller bracket and close to the film placement bracket, and the film outlet roller is disposed at the other end of the roller bracket. The distance between the axis of the film outlet roller and the axis of the reduction roller is 40% to 60% of the length of the wrapping machine swing arm.

2. The roller film dispensing mechanism as described in claim 1, characterized in that, A deceleration mechanism is provided at one end of the deceleration roller. The deceleration mechanism includes a support, a first friction plate, a second friction plate, and an elastic guide mechanism. The first friction plate is provided on the roller shaft at one end of the deceleration roller. The support is provided on the roller bracket. The elastic guide mechanism is provided on the support. The elastic guide mechanism is connected to the second friction plate. The first friction plate is in contact with the second friction plate.

3. The drum film out mechanism of claim 2, wherein, The elastic guiding mechanism includes a guide shaft and a first spring. One end of the guide shaft is detachably connected to the support, and the other end of the guide shaft is connected to the second friction plate. The first spring is provided on the guide shaft, and both ends of the first spring are in contact with the support and the second friction plate.

4. The drum film out mechanism of claim 2, wherein, It also includes a fixed base, through which the roller shaft passes, and the fixed base is connected to the roller support.

5. The drum film out mechanism of claim 1, wherein, The roller support includes a support body, a cover, and side plates. The cover and the side plates are disposed on both sides of the support body, and the deceleration roller is connected to the side plates and the cover.

6. The drum film out mechanism of claim 5, wherein, The membrane placement bracket includes a support shaft and a base. The base is mounted on the side plate, and one end of the support shaft is connected to the base.

7. The drum film out mechanism of claim 6, wherein, It also includes an elastic adjustment mechanism, which is provided on the support shaft.

8. The drum film out mechanism of claim 7, wherein, The elastic adjustment mechanism includes a second spring and a sliding block. The second spring and the sliding block are sleeved on the support shaft. One end of the second spring is connected to the base, and the other end of the second spring abuts against the sliding block.

9. A film wrapping vehicle characterized by comprising: Includes the roller film dispensing mechanism as described in any one of claims 1 to 8.

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