A pre-stretching mechanism of a wrapping film for a reciprocating pillow packing machine

Abstract

The utility model relates to a kind of pre-stretching mechanism of packing film of reciprocating pillow packing machine, including base, pillow packing machine mechanism and packing film roll, pillow packing machine mechanism is set in the top of base, packing film roll is set in the top of base, the top of base is provided with the pre-stretching assembly for adjusting the damping strength of packing film roll, pre-stretching assembly includes first U-shaped frame, gear, toothed plate, square damping block, square plate, first spring, ring plate, knob frame, press plate, clamping plate and second spring, first U-shaped frame is fixedly installed in the top of base, first U-shaped frame bottom is provided with sliding slot, gear rotation is installed in sliding slot, toothed plate sliding is installed in sliding slot.The utility model is adjusted by the pre-stretching assembly of being set to the damping strength of packing film roll, to prevent the situation that square damping block cannot adjust the damping strength of packing film roll when packing film pre-stretching mechanism is used.

Description

Technical Field

[0001] This utility model relates to the field of pillow bag machine technology, and in particular to a pre-stretching mechanism for packaging film of a reciprocating pillow bag machine. Background Technology

[0002] Reciprocating pillow bag machines are a common type of packaging equipment, mainly used for product packaging in the food, pharmaceutical, and chemical industries. They form pillow-shaped packaging bags by wrapping the product with packaging film and then heat-sealing it. The packaging film pre-stretching mechanism is an important component of this type of machine. Its main function is to pre-stretch the packaging film to ensure the smooth progress of the packaging process and the good performance of the final packaging effect. During the use of the packaging film pre-stretching mechanism, the follower roller needs to be set on the support frame, and the packaging film is placed on the follower roller so that the packaging film passes between the drive rollers. The motor is started to drive the drive roller to rotate. The damping block on the support frame dampens and limits the follower roller, so that a speed difference is generated between the drive roller and the follower roller, and the packaging film is pre-stretched.

[0003] In actual use, this patent has the following drawbacks: Because the support frame cannot adjust the damping force of the damping block on the follower roller during the pre-stretching process of the packaging film by the drive roller and follower roller, and different packaging needs require different packaging film tightness, the drive roller and follower roller cannot fully adapt to the packaging film tightness required by different packaging needs, thereby reducing the pre-stretching effect of the packaging film pre-stretching mechanism on the packaging film. Utility Model Content

[0004] In view of the technical problem in the prior art that different packaging needs require different packaging film densities, resulting in the inability of the drive roller and follower roller to fully adapt to the different packaging needs for packaging film densities, this utility model provides a packaging film pre-stretching mechanism for a reciprocating pillow bag machine.

[0005] The technical solution adopted by this utility model is: a pre-stretching mechanism for packaging film of a reciprocating pillow wrapping machine, including a base, a pillow wrapping machine mechanism and a packaging film roller. The pillow wrapping machine mechanism is disposed on the top of the base, and the packaging film roller is disposed on the top of the base. A pre-stretching component for adjusting the damping force of the packaging film roller is disposed on the top of the base. The pre-stretching component includes a first U-shaped frame, a gear, a toothed plate, a square damping block, a square plate, a first spring, an annular plate, a knob frame, a button plate, a locking plate and a second spring. The first U-shaped frame is fixedly installed on the top of the base. A sliding groove is opened at the bottom of the first U-shaped frame. The gear is rotatably installed in the sliding groove, and the toothed plate is slidably installed in the sliding groove.

[0006] Furthermore, the packaging film roller is rotatably installed inside the first U-shaped frame, and square grooves are provided on both sides of the first U-shaped frame. The square damping block is slidably installed in the square groove, the square plate is slidably installed in the square groove, and the first spring is fixedly installed between the square plate and the square damping block.

[0007] Furthermore, the annular plate is fixedly installed on one side of the first U-shaped frame, the knob frame is rotatably installed on one side of the first U-shaped frame, the knob frame is connected to the gear, and a slot is provided on the inner side of the annular plate.

[0008] Furthermore, a first groove is provided on the outer side of the knob frame, and a second groove is provided on the outer side of the knob frame. The button is slidably installed in the first groove, and the locking plate is slidably installed in the second groove. The button and the locking plate are fixedly connected, and the second spring is fixedly installed between the locking plates.

[0009] Furthermore, the top of the base is provided with a moving component for moving packaging films of different sizes. The moving component includes a second U-shaped frame, a drive roller, a self-locking motor, a third U-shaped frame, a threaded rod, a moving block, a moving roller, a rotating shaft, a transmission belt, an adjustment knob, and a buckle. The second U-shaped frame is fixedly installed on the top of the base, the drive roller is rotatably installed inside the second U-shaped frame, the self-locking motor is fixedly installed on the front side of the second U-shaped frame, and the drive roller is connected to the output end of the self-locking motor.

[0010] Furthermore, the third U-shaped frame is fixedly installed on the top of the second U-shaped frame, the threaded rod is rotatably installed on the bottom of the third U-shaped frame, the movable blocks are all slidably installed on both sides of the inner wall of the third U-shaped frame, the movable blocks are threadedly connected to the threaded rod, and the movable roller is rotatably installed between the movable blocks.

[0011] Furthermore, the rotating shaft is rotatably mounted on the top of the third U-shaped frame, the rotating shaft is connected to the threaded rod, the transmission belt is sleeved between the rotating shafts, the adjusting knob is fixedly mounted on the top of the rotating shaft, and the buckle is fixedly mounted on the top of the third U-shaped frame.

[0012] The beneficial effects of this utility model are: 1. This utility model can adjust the damping force of the packaging film roller through the pre-stretching component, thereby preventing the situation where the square damping block cannot adjust the damping force of the packaging film roller when the packaging film pre-stretching mechanism is in use, thus increasing the pre-stretching effect of the packaging film pre-stretching mechanism on the packaging film.

[0013] 2. Furthermore, this utility model can limit and fix the knob frame through the locking block, thereby improving the stability of the packaging film pre-stretching mechanism during use.

[0014] 3. This utility model also improves the flexibility of the packaging film pre-stretching mechanism by enabling the movement of packaging films of different sizes through the moving component. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the mobile component of this utility model; Figure 3 This is a schematic diagram of the pre-stretching component structure of this utility model; Figure 4 This is a schematic diagram of the knob frame structure of this utility model.

[0016] The components in the diagram are labeled as follows: 1. Base; 2. Pillow bag machine mechanism; 3. Packaging film roller; 4. Pre-stretching assembly; 401. First U-shaped frame; 402. Gear; 403. Toothed plate; 404. Square damping block; 405. Square plate; 406. First spring; 407. Annular plate; 408. Knob frame; 409. Press plate; 410. Clamping plate; 411. Second spring; 412. Slide groove; 413. Square groove; 414. Clamping slot; 415. First groove; 416. Second groove; 5. Moving assembly; 501. Second U-shaped frame; 502. Drive roller; 503. Self-locking motor; 504. Third U-shaped frame; 505. Threaded rod; 506. Moving block; 507. Moving roller; 508. Rotating shaft; 509. Transmission belt; 510. Adjustment knob; 511. Buckle. Detailed Implementation

[0017] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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.

[0018] 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 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.

[0019] The following is in conjunction with the appendix Figures 1-4 The present invention will be further described below.

[0020] In order to solve the problems existing in the background art, this application proposes the following technical solution: a pre-stretching mechanism for packaging film of a reciprocating pillow bag machine.

[0021] The device includes a base 1, a pillow-packing machine mechanism 2, and a packaging film roller 3. The pillow-packing machine mechanism 2 is located on top of the base 1, and the packaging film roller 3 is located on top of the base 1. A pre-tensioning assembly 4 for adjusting the damping force of the packaging film roller 3 is provided on the top of the base 1. The pre-tensioning assembly 4 includes a first U-shaped frame 401, a gear 402, a toothed plate 403, a square damping block 404, a square plate 405, a first spring 406, an annular plate 407, a knob frame 408, a button plate 409, a locking plate 410, and a second spring 411. The first U-shaped frame 401 is fixedly installed on the top of the base 1. A sliding groove 412 is provided at the bottom of the first U-shaped frame 401. The gear 402 is rotatably installed in the sliding groove 412, and the toothed plate 403 is slidably installed in the sliding groove 412.

[0022] The pre-stretching component 4 can adjust the damping force of the packaging film roller 3, thereby preventing the packaging film pre-stretching mechanism from being unable to adjust the damping force of the square damping block 404 on the packaging film roller 3 during use, thus increasing the pre-stretching effect of the packaging film pre-stretching mechanism on the packaging film.

[0023] Reference Figure 3 In this embodiment, the packaging film roller 3 is rotatably installed in the first U-shaped frame 401. The first U-shaped frame 401 has square grooves 413 on both sides. The square damping block 404 is slidably installed in the square groove 413. The square plate 405 is slidably installed in the square groove 413. The first spring 406 is fixedly installed between the square plate 405 and the square damping block 404.

[0024] The annular plate 407 is fixedly installed on one side of the first U-shaped frame 401, and the knob frame 408 is rotatably installed on one side of the first U-shaped frame 401. The knob frame 408 is connected to the gear 402, and a slot 414 is provided on the inner side of the annular plate 407.

[0025] A first groove 415 is provided on the outer side of the knob frame 408, and a second groove 416 is provided on the outer side of the knob frame 408. The button plate 409 is slidably installed in the first groove 415, and the locking plate 410 is slidably installed in the second groove 416. The button plate 409 and the locking plate 410 are fixedly connected, and the second spring 411 is fixedly installed between the locking plates 410.

[0026] The set block 410 can limit and fix the knob frame 408, thereby improving the stability of the packaging film pre-stretching mechanism during use.

[0027] Reference Figure 2 In this embodiment, the top of the base 1 is provided with a moving component 5 for moving packaging films of different sizes. The moving component 5 includes a second U-shaped frame 501, a drive roller 502, a self-locking motor 503, a third U-shaped frame 504, a threaded rod 505, a moving block 506, a moving roller 507, a rotating shaft 508, a transmission belt 509, an adjustment knob 510, and a buckle 511. The second U-shaped frame 501 is fixedly installed on the top of the base 1, the drive roller 502 is rotatably installed inside the second U-shaped frame 501, the self-locking motor 503 is fixedly installed on the front side of the second U-shaped frame 501, and the drive roller 502 is connected to the output end of the self-locking motor 503.

[0028] The movable component 5 can move packaging films of different sizes, thereby improving the flexibility of the packaging film pre-stretching mechanism during use.

[0029] The third U-shaped frame 504 is fixedly installed on the top of the second U-shaped frame 501. The threaded rod 505 is rotatably installed at the bottom of the third U-shaped frame 504. The moving blocks 506 are slidably installed on both sides of the inner wall of the third U-shaped frame 504. The moving blocks 506 are threadedly connected to the threaded rod 505. The moving roller 507 is rotatably installed between the moving blocks 506.

[0030] The rotating shaft 508 is rotatably mounted on the top of the third U-shaped frame 504. The rotating shaft 508 is connected to the threaded rod 505. The transmission belt 509 is sleeved between the rotating shafts 508. The adjusting knob 510 is fixedly mounted on the top of the rotating shaft 508. The buckle 511 is fixedly mounted on the top of the third U-shaped frame 504.

[0031] To ensure that those skilled in the art can fully understand the technical solution, this application provides the following overall overview: When the packaging film pre-stretching mechanism is needed, first hold the knob frame 408 and press the button plate 409. The button plate 409 drives the clamping plate 410 to retract, and the clamping plate 410 presses the second spring 411, releasing it from the limiting fixation of the knob frame 408. Rotating the knob frame 408 drives the square plate 405 to move through the gear 402 and toothed plate 403. The square plate 405 presses the first spring 406, adjusting the damping force between the square damping block 404 and the packaging film roller 3. After the damping force between the square damping block 404 and the packaging film roller 3 is adjusted, refer to the above operation, release the button plate 409, and the second spring 411 will press the clamping plate 406. The plate 410 is pressed to insert the card plate 410 into the card slot 414 to limit and fix the knob frame 408. The packaging film is placed between the drive roller 502 and the moving roller 507. The adjustment knob 510 is rotated to drive the rotating shaft 508 to rotate. The rotating shaft 508 drives another rotating shaft 508 to rotate through the transmission belt 509. The rotating shaft 508 drives the moving roller 507 to move through the threaded rod 505 and the moving block 506, so that the drive roller 502 and the moving roller 507 clamp the packaging film. The adjustment knob 510 is limited and fixed using the buckle 511. The self-locking motor 503 is started to drive the drive roller 502 to rotate, so that it pre-stretches the packaging film.

[0032] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0033] Although embodiments of the present invention have been shown and described, the scope of the present invention will be defined by the appended claims and their equivalents for those skilled in the art.

Claims

1. A pre-stretching mechanism for the packaging film of a reciprocating pillow bag machine, characterized in that, The device includes a base (1), a pillow-packing machine mechanism (2), and a packaging film roller (3). The pillow-packing machine mechanism (2) is located on the top of the base (1), and the packaging film roller (3) is located on the top of the base (1). The top of the base (1) is provided with a pre-stretching assembly (4) for adjusting the damping force of the packaging film roller (3). The pre-stretching assembly (4) includes a first U-shaped frame (401), a gear (402), a toothed plate (403), a square damping block (404), a square plate (405), a first spring (406), an annular plate (407), a knob frame (408), a button plate (409), a locking plate (410), and a second spring (411). The first U-shaped frame (401) is fixedly installed on the top of the base (1). A groove (412) is provided at the bottom of the first U-shaped frame (401). The gear (402) is rotatably installed in the groove (412), and the toothed plate (403) is slidably installed in the groove (412).

2. The packaging film pre-stretching mechanism of a reciprocating pillow bag machine according to claim 1, characterized in that, The packaging film roller (3) is rotatably installed in the first U-shaped frame (401). The first U-shaped frame (401) has square grooves (413) on both sides. The square damping block (404) is slidably installed in the square groove (413). The square plate (405) is slidably installed in the square groove (413). The first spring (406) is fixedly installed between the square plate (405) and the square damping block (404).

3. The packaging film pre-stretching mechanism of a reciprocating pillow bag machine according to claim 1, characterized in that, The annular plate (407) is fixedly installed on one side of the first U-shaped frame (401), and the knob frame (408) is rotatably installed on one side of the first U-shaped frame (401). The knob frame (408) is connected to the gear (402), and a slot (414) is provided on the inner side of the annular plate (407).

4. The packaging film pre-stretching mechanism of a reciprocating pillow bag machine according to claim 1, characterized in that, The knob frame (408) has a first groove (415) on its outer side and a second groove (416) on its outer side. The button plate (409) is slidably installed in the first groove (415) and the retaining plate (410) is slidably installed in the second groove (416). The button plate (409) and the retaining plate (410) are fixedly connected. The second spring (411) is fixedly installed between the retaining plates (410).

5. The pre-stretching mechanism for the packaging film of a reciprocating pillow bag machine according to claim 1, characterized in that, The base (1) is provided with a moving component (5) for moving packaging films of different sizes. The moving component (5) includes a second U-shaped frame (501), a drive roller (502), a self-locking motor (503), a third U-shaped frame (504), a threaded rod (505), a moving block (506), a moving roller (507), a rotating shaft (508), a transmission belt (509), an adjustment knob (510), and a buckle (511). The second U-shaped frame (501) is fixedly installed on the top of the base (1). The drive roller (502) is rotatably installed inside the second U-shaped frame (501). The self-locking motor (503) is fixedly installed on the front side of the second U-shaped frame (501). The drive roller (502) is connected to the output end of the self-locking motor (503).

6. The packaging film pre-stretching mechanism of a reciprocating pillow bag machine according to claim 5, characterized in that, The third U-shaped frame (504) is fixedly installed on the top of the second U-shaped frame (501), the threaded rod (505) is rotatably installed on the bottom of the third U-shaped frame (504), the moving blocks (506) are all slidably installed on both sides of the inner wall of the third U-shaped frame (504), the moving blocks (506) are threadedly connected to the threaded rod (505), and the moving roller (507) is rotatably installed between the moving blocks (506).

7. The packaging film pre-stretching mechanism of a reciprocating pillow bag machine according to claim 5, characterized in that, The rotating shaft (508) is rotatably mounted on the top of the third U-shaped frame (504). The rotating shaft (508) is connected to the threaded rod (505). The transmission belt (509) is sleeved between the rotating shafts (508). The adjusting knob (510) is fixedly mounted on the top of the rotating shaft (508). The buckle (511) is fixedly mounted on the top of the third U-shaped frame (504).

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