Bag mouth forming device

Abstract

The utility model discloses a bag mouth forming device, which aims at utilizing one driving module to finish the functions of blocking, pressing and inserting a prefabricated bag, and adopts the technical scheme that the bag mouth forming device comprises two first guide rails, a second guide rail, a lifting plate and the driving module, the first guide rails are arranged at an interval along the horizontal direction, and the second guide rail is arranged at an interval along the horizontal direction; a feeding channel is formed between the two first guide rails, one end of the feeding channel is provided with a feeding port, the lifting plate is connected with the two first guide rails and can slide up and down along the first guide rails, and the driving module is connected with the lifting plate to drive the lifting plate to move up and down; a pressing plate used for pressing a prefabricated bag is arranged at the bottom of the lifting plate, and the end, away from the feeding port, of the pressing plate extends downwards to form a baffle; belongs to the technical field of bag prefabricating equipment.

Description

Technical Field

[0001] The utility model belongs to the technical field of prefabricated bag equipment, and more specifically relates to a bag opening forming device. Background Art

[0002] In the pre-made bag equipment, after the product is loaded into the pre-made bag, the bag mouth of the pre-made bag needs to be processed to shape the bag mouth and then sealed.

[0003] For example, patent CN201821345074.9 discloses a sealing device for a prefabricated bag packaging machine, including an external corner insertion mechanism, a sealing and cutting knife mechanism, and a bag-supporting mechanism. The bag-supporting mechanism includes a bag-supporting corner assembly I, a bag-supporting corner assembly II, a bag-supporting corner assembly III, and a bag-supporting corner assembly IV. The four bag-supporting assemblies all include a pin; the pin reciprocates under the drive of the bag-supporting corner driving assembly; the four pins of the four bag-supporting corner assemblies correspond to the four corners of the bag opening of the packaging bag respectively;

[0004] The above-mentioned sealing device uses an external angle plate mechanism to insert the bag, so that wrinkles appear on the bag opening to shape the bag opening, and a bag supporting mechanism is provided to support the prefabricated bag. The entire device has multiple driving sources, which are more complicated to arrange, and the control system is more cumbersome in the process of controlling the actions of each driving source. Utility Model Content

[0005] The main purpose of the utility model is to provide a bag opening forming device, which aims to use a driving module to complete the functions of blocking, pressing and inserting prefabricated bags.

[0006] According to a first aspect of the utility model, a bag mouth forming device is provided, comprising a first guide rail, a second guide rail, a lifting plate and a driving module, wherein the first guide rails are two and are arranged at intervals in the horizontal direction, a feeding channel is formed between the two first guide rails, one end of the feeding channel is a feeding port, the lifting plate is connected to the two first guide rails and can slide up and down along the first guide rails, and the driving module is connected to the lifting plate to drive the lifting plate to move up and down;

[0007] A pressing plate for pressing the prefabricated bag is provided at the bottom of the lifting plate, and a baffle extends downward from one end of the pressing plate away from the feed port;

[0008] There are two second guide rails corresponding to the first guide rails one by one, the second guide rails are located below the first guide rails, the second guide rails are horizontally slidably matched with a limit plate, the sliding direction of the limit plate is perpendicular to the feeding channel, and the end of the limit plate close to the feeding port is provided with a bag insertion head;

[0009] The lifting plate is connected to the limit plate through a linkage mechanism, and the lifting of the lifting plate drives the two limit plates to move away from or approach each other.

[0010] In the above-mentioned bag mouth forming device, the limiting plate includes a plate body and a rod body, the plate body is parallel to the feed channel, the rod body is located on the side of the plate body facing away from the feed channel, the rod body is slidingly matched with the second guide rail, and the bag insertion head is located at one end of the plate body close to the feed port.

[0011] In the above-mentioned bag mouth forming device, the linkage mechanism includes a linkage plate, the linkage plate is fixedly connected to the rod body, a guide groove is provided on the linkage plate, the guide groove includes a first vertical section, a transition section and a second vertical section which are connected in sequence from top to bottom, the spacing between the first vertical section and the plate body is smaller than the spacing between the second vertical section and the plate body; a guide wheel is provided on the lifting plate, and the guide wheel is located in the guide groove and can move along the guide groove.

[0012] In the above-mentioned bag mouth forming device, the driving module includes a motor and a cam mechanism, and the cam mechanism connects the motor and the lifting plate.

[0013] In the above-mentioned bag mouth forming device, the cam mechanism includes a cam and a follower, the cam is arranged at the output end of the motor, the follower is installed on the lifting plate in a height-adjustable manner, and the follower cooperates with the cam.

[0014] One of the above technical solutions of the utility model has at least one of the following advantages or beneficial effects:

[0015] In the utility model, the lifting plate and the limiting plate can be linked to each other. When the lifting plate moves downward, the pressing plate and the baffle plate gradually descend, and the prefabricated bag containing the product enters the feeding channel from the feeding port and is blocked by the baffle plate. Subsequently, the pressing plate can be pressed onto the prefabricated bag to limit the longitudinal position of the prefabricated bag. After the lifting plate descends to a certain height, it will drive the two limiting plates to move toward each other, so that the two limiting plates limit the transverse position of the prefabricated bag. At the same time, the bag insertion head will be inserted into the outer wall of the bag opening of the prefabricated bag, causing wrinkles to appear on the bag opening. The pressing plate continues to press down to compress and fold the wrinkles at the bag opening, and allows the prefabricated bag to separate from the bag insertion head, thereby completing the bag opening forming. Based on this, only one driving module is needed to complete the blocking, pressing and bag insertion functions of the prefabricated bag, without too many driving sources, and the overall structure is simpler and easier to control. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0017] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model;

[0018] Figure 2It is another structural schematic diagram of the first embodiment of the utility model;

[0019] Figure 3 It is a side view of the first embodiment of the utility model.

[0020] Among them, the reference numerals of each figure are:

[0021] 1. First guide rail; 2. Second guide rail; 3. Lifting plate; 31. Pressing plate; 32. Baffle plate; 33. Guide wheel; 4. Driving module; 41. Motor; 42. Cam mechanism; 421. Cam; 422. Follower; 5. Limiting plate; 51. Plate body; 52. Rod body; 6. Bag insertion head; 7. Linkage mechanism; 71. Linkage plate; 72. First vertical section; 73. Transition section; 74. Second vertical section. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] The following disclosure provides many different embodiments or examples for implementing different solutions of the present invention.

[0024] Reference Figures 1 to 3 As shown, in one embodiment of the utility model, a bag mouth forming device includes a first guide rail 1, a second guide rail 2, a lifting plate 3 and a driving module 4. The first guide rail 1 and the second guide rail 2 are fixed on the frame of the prefabricated bag equipment. There are two first guide rails 1 and they are arranged at intervals in the horizontal direction. A feeding channel is formed between the two first guide rails 1, and one end of the feeding channel is a feeding port.

[0025] The lifting plate 3 is connected to the two first guide rails 1 and can slide up and down along the first guide rails 1. The driving module 4 is connected to the lifting plate 3 to drive the lifting plate 3 to move up and down.

[0026] A pressing plate 31 for pressing the prefabricated bag is provided at the bottom of the lifting plate 3, and a baffle 32 extends downward from one end of the pressing plate 31 away from the feed port;

[0027] There are two second guide rails 2 corresponding to the first guide rails 1 one by one. The second guide rails 2 are located below the first guide rails 1. The second guide rails 2 are horizontally slidably matched with a limit plate 5. The sliding direction of the limit plate 5 is perpendicular to the feed channel. The end of the limit plate 5 close to the feed port is provided with a bag insertion head 6.

[0028] The lifting plate 3 is connected to the limit plate 5 through a linkage mechanism 7, and the lifting plate 3 moves up and down to drive the two limit plates 5 to move away from or approach each other;

[0029] The lifting plate 3 and the limiting plate 5 can be linked. When the lifting plate 3 moves down, the pressing plate 31 and the baffle plate 32 gradually descend, and the prefabricated bag containing the product enters the feeding channel from the feeding port and is blocked by the baffle plate 32. Then, the pressing plate 31 can be pressed onto the prefabricated bag to limit the longitudinal position of the prefabricated bag. After the lifting plate 3 descends to a certain height, it will drive the two limiting plates 5 to move toward each other, so that the two limiting plates 5 limit the transverse position of the prefabricated bag. At the same time, the bag insertion head 6 will be inserted into the outer wall of the bag opening of the prefabricated bag, causing wrinkles to appear on the bag opening. When the bag insertion head 6 is inserted into After being in position, the two limiting plates 5 also clamp the prefabricated bag and the product, and then the pressing plate 31 continues to press down to compress and fold the wrinkles at the bag opening, and allow the prefabricated bag to separate from the bag insertion head 6, completing the bag opening forming, and then it can be directly sealed. After the sealing is completed, the lifting plate 3 rises, the two limiting plates 5 move away from each other, the pressing plate 31 and the baffle plate 32 also rise, and the sealed prefabricated bag can be taken away; based on this, only one driving module 4 is needed to complete the blocking, pressing and bag insertion functions of the prefabricated bag, without too many driving sources, and the overall structure is simpler and easier to control.

[0030] In this embodiment, the limiting plate 5 includes a plate body 51 and a rod body 52. ​​The plate body 51 is parallel to the feed channel. The rod body 52 is located on the side of the plate body 51 facing away from the feed channel. The rod body 52 slides with the second guide rail 2 to provide support for the movement of the plate body 51. The bag insertion head 6 is located at one end of the plate body 51 close to the feed port, so that the bag insertion head 6, the plate body 51 and the rod body 52 can move synchronously.

[0031] In this embodiment, the linkage mechanism 7 includes a linkage plate 71, which is fixedly connected to the rod body 52. ​​The linkage plate 71 is provided with a guide groove, which includes a first vertical section 72, a transition section 73, and a second vertical section 74 that are connected in sequence from top to bottom. The distance between the first vertical section 72 and the plate body 51 is smaller than the distance between the second vertical section 74 and the plate body 51. The lifting plate 3 is provided with a guide wheel 33, which is located in the guide groove and can move along the guide groove.

[0032] Initially, the lifting plate 3 is at a high position, at which time the guide wheel 33 is located in the first vertical section 72, and the lifting plate 3 begins to descend, and the guide wheel 33 will move along the first vertical section 72, at which time the baffle 32 can be used to block the prefabricated bag; as the lifting plate 3 continues to descend, the guide wheel 33 enters the transition section 73, and since the spacing between the first vertical section 72 and the plate body 51 is smaller than the spacing between the second vertical section 74 and the plate body 51, at this time the linkage plate 71 moves in a direction close to the plate body 51, so that the plate body 51 and the bag insertion head 6 are close to the prefabricated bag, completing the bag insertion action; as the lifting plate 3 continues to descend, the guide wheel 33 then reaches the second vertical section 74, at which time the plate body 51 and the bag insertion head 6 will not move, and the pressing plate 31 continues to descend to press the prefabricated bag, allowing the prefabricated bag to separate from the bag insertion head 6, and compressing and folding the folds inserted by the bag insertion head 6 for subsequent sealing.

[0033] In this embodiment, the driving module 4 includes a motor 41 and a cam mechanism 42. The cam mechanism 42 connects the motor 41 and the lifting plate 3 to drive the lifting plate 3 to move up and down.

[0034] Specifically, the cam mechanism 42 includes a cam 421 and a follower 422. The cam 421 is arranged at the output end of the motor 41. The follower 422 is installed on the lifting plate 3 in a height-adjustable manner. The cam 421 is provided with a corresponding groove. A roller is provided at one end of the follower 422, and the roller is located in the groove. The follower 422 is height-adjustable, so the upper and lower limits of the pressing plate 31 can be adjusted, which is convenient for adjusting the machine.

[0035] Generally speaking, a screw nut structure may be provided on the lifting plate 3 to adjust the height of the driven member 422 .

[0036] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A bag mouth forming device, characterized in that: It includes a first guide rail, a second guide rail, a lifting plate and a driving module, wherein the first guide rails are two and are arranged at intervals in the horizontal direction, a feeding channel is formed between the two first guide rails, one end of the feeding channel is a feeding port, the lifting plate is connected to the two first guide rails and can slide up and down along the first guide rails, and the driving module is connected to the lifting plate to drive the lifting plate to move up and down; A pressing plate for pressing the prefabricated bag is provided at the bottom of the lifting plate, and a baffle extends downward from one end of the pressing plate away from the feed port; There are two second guide rails corresponding to the first guide rails one by one, the second guide rails are located below the first guide rails, the second guide rails are horizontally slidably matched with a limit plate, the sliding direction of the limit plate is perpendicular to the feeding channel, and the end of the limit plate close to the feeding port is provided with a bag insertion head; The lifting plate is connected to the limit plate through a linkage mechanism, and the lifting of the lifting plate drives the two limit plates to move away from or approach each other.

2. The bag mouth forming device according to claim 1, characterized in that: The limiting plate includes a plate body and a rod body, the plate body is parallel to the feed channel, the rod body is located on the side of the plate body facing away from the feed channel, the rod body is slidably matched with the second guide rail, and the bag insertion head is located at one end of the plate body close to the feed port.

3. The bag mouth forming device according to claim 2, characterized in that: The linkage mechanism includes a linkage plate, which is fixedly connected to the rod body. A guide groove is provided on the linkage plate, and the guide groove includes a first vertical section, a transition section and a second vertical section which are connected in sequence from top to bottom. The spacing between the first vertical section and the plate body is smaller than the spacing between the second vertical section and the plate body. A guide wheel is provided on the lifting plate, and the guide wheel is located in the guide groove and can move along the guide groove.

4. The bag mouth forming device according to claim 1, characterized in that: The driving module includes a motor and a cam mechanism, and the cam mechanism connects the motor and the lifting plate.

5. The bag mouth forming device according to claim 4, characterized in that: The cam mechanism comprises a cam and a follower, wherein the cam is arranged at the output end of the motor, and the follower is mounted on the lifting plate in a height-adjustable manner, and the follower cooperates with the cam.

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