Pre-clamping device for packaging machine

Abstract

The utility model relates to a pre-clamping device for a packaging machine. Comprising a supporting plate, a first clamping block used for pre-clamping one side of a packaging bag, a second clamping block used for pre-clamping the other side of the packaging bag and a telescopic mechanism used for driving the first clamping block and the second clamping block to slide close to or away from each other. The telescopic mechanisms are arranged at the two ends of the first clamping block and the two ends of the second clamping block correspondingly. The two sets of telescopic mechanisms are installed on the two corresponding sets of supporting plates correspondingly. The technical problems that in the prior art, due to the fact that a pre-clamping device is simple in structure and is simply driven by an air cylinder to conduct pre-clamping operation, the clamping force is difficult to control accurately, a packaging bag is prone to being damaged or sealing is not tight, meanwhile, the response speed of the pre-clamping device is low, and the packaging efficiency is affected are solved.

Description

Technical Field

[0001] This utility model relates to the field of packaging machines, and in particular to a pre-clamping device for packaging machines. Background Technology

[0002] Automatic packaging machines are increasingly mature automated production equipment in modern industry. People often come into contact with items in packaged bags in their daily lives. During the packaging process, automatic packaging machines involve a horizontal sealing process, which involves sealing and cutting the top and bottom edges of the bag to complete the automatic packaging process. In existing technologies, the horizontal sealing process can generally be completed using a horizontal sealing device. However, when horizontally sealing long packages or bags with a large amount of disposable packaging material, the bottom seal is prone to failure due to the strong squeezing force of the internal material on the sealed edges. Therefore, a pre-clamping device is needed to pre-clamp the bag. However, the pre-clamping device in the existing technology has a relatively simple structure, which simply uses a cylinder to drive the pre-clamping operation. This makes it difficult to accurately control the clamping force, which can easily lead to damage to the bag or incomplete sealing. At the same time, the response speed of the pre-clamping device is slow, which affects the packaging efficiency. Utility Model Content

[0003] This application provides a pre-clamping device for packaging machines, which solves the technical problems of existing pre-clamping devices, which have simple structures and are simply driven by cylinders for pre-clamping operations. This makes it difficult to accurately control the clamping force, which can easily lead to damage to the packaging bag or poor sealing. At the same time, the response speed of the pre-clamping device is slow, which affects the packaging efficiency.

[0004] The technical solution adopted in the embodiments of this application is as follows:

[0005] A pre-clamping device for a packaging machine includes a support plate, a first clamping block for pre-clamping one side of a packaging bag, a second clamping block for pre-clamping the other side of the packaging bag, and a telescopic mechanism for driving the first clamping block and the second clamping block to slide closer to or away from each other; the telescopic mechanism is respectively provided at both ends of the first clamping block and the second clamping block; two sets of the telescopic mechanism are respectively mounted on two corresponding sets of the support plate.

[0006] The telescopic mechanism includes a bending block disposed at the end of the first clamping block, a moving block disposed at the end of the second clamping block, a limiting block disposed on the support plate, a push rod for moving the moving block, a connecting plate disposed at one end of the push rod, a first driving device for driving the bending block to slide, and a second driving device for driving the connecting plate to move; the bending block is slidably connected to the push rod; the moving block is disposed at the other end of the push rod; the push rod is slidably connected to the limiting block; the driving end of the first driving device is drivenly connected to the bending block; the driving end of the second driving device is drivenly connected to the connecting plate; both the first driving device and the second driving device are mounted on the support plate.

[0007] A further technical solution is that both the first driving device and the second driving device are cylinders.

[0008] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0009] 1. By employing a support plate, a first clamping block, a second clamping block, and a telescopic mechanism, and by designing two sets of telescopic mechanisms respectively installed at the ends of the first and second clamping blocks, and through the coordinated action of the first and second driving devices (both cylinders), the first and second clamping blocks can simultaneously slide closer or further apart. This synchronous operation mechanism significantly improves the response speed of the pre-clamping device, thereby effectively enhancing packaging efficiency. In contrast, existing pre-clamping devices often have simple structures, driven by only a single cylinder, resulting in asynchronous clamping block movements, slow response speed, and severely impacting the smoothness and efficiency of the packaging process. The telescopic mechanism and driving device allow for precise control of the clamping force of the first and second clamping blocks. This precise control effectively avoids damage or incomplete sealing of the packaging bag due to improper force during pre-clamping, significantly improving packaging quality and product sealing. By using two independent telescopic mechanisms and driving devices to control the movement of the first and second clamping blocks respectively, the stability and reliability of the equipment are enhanced. This design avoids the failure risks that may occur with a single driving device, ensuring the continuity and stability of the pre-clamping operation. Attached Figure Description

[0010] Figure 1 This is a top view of the overall structure of a pre-clamping device for a packaging machine according to an embodiment of the present invention.

[0011] Figure 2 This is a bottom schematic diagram of the overall structure of a pre-clamping device for a packaging machine according to an embodiment of the present invention.

[0012] In the figure: 1. Support plate; 2. First clamping block; 3. Second clamping block; 4. Telescopic mechanism; 41. Bending block; 42. Moving block; 43. Limiting block; 44. Push rod; 45. Connecting plate; 46. First driving device; 47. Second driving device. Detailed Implementation

[0013] This application provides a pre-clamping device for packaging machines, which solves the technical problems of existing pre-clamping devices, which have simple structures and are simply driven by cylinders for pre-clamping operations. This makes it difficult to accurately control the clamping force, which can easily lead to damage to the packaging bag or poor sealing. At the same time, the response speed of the pre-clamping device is slow, which affects the packaging efficiency.

[0014] The technical solution in this application is to solve the above problems, and the overall approach is as follows:

[0015] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0016] A pre-clamping device for a packaging machine, such as Figure 1 and Figure 2 As shown, the device includes a support plate 1, a first clamping block 2 for pre-clamping one side of the packaging bag, a second clamping block 3 for pre-clamping the other side of the packaging bag, and a telescopic mechanism 4 for driving the first clamping block 2 and the second clamping block 3 to slide closer to or away from each other. Telescopic mechanisms 4 are respectively provided at both ends of the first clamping block 2 and the second clamping block 3. The two sets of telescopic mechanisms 4 are respectively installed on the corresponding two sets of support plates 1.

[0017] The telescopic mechanism 4 includes a bending block 41 disposed at the end of the first clamping block 2, a moving block 42 disposed at the end of the second clamping block 3, a limiting block 43 disposed on the support plate 1, a push rod 44 for moving the moving block 42, a connecting plate 45 disposed at one end of the push rod 44, a first driving device 46 for driving the bending block 41 to slide, and a second driving device 47 for driving the connecting plate 45 to move. The bending block 41 is slidably connected to the push rod 44. The moving block 42 is disposed at the other end of the push rod 44. The push rod 44 is slidably connected to the limiting block 43. The driving end of the first driving device 46 is driven by the bending block 41. The driving end of the second driving device 47 is driven by the connecting plate 45. Both the first driving device 46 and the second driving device 47 are mounted on the support plate 1.

[0018] Both the first drive unit 46 and the second drive unit 47 are cylinders.

[0019] The extension of the second driving device 47 allows the connecting plate 45 to move the push rod 44, which in turn moves the moving block 42 at its end towards the limiting block 43. The extension of the first driving device 46 allows the bending block 41 to slide along the push rod 44 and move towards the limiting block 43. Since the bending block 41 is connected to the end of the first clamping block 2 and the moving block 42 is connected to the end of the second clamping block 3, the simultaneous extension of the first driving device 46 and the second driving device 47 allows the first clamping block 2 and the second clamping block 3 to slide closer together simultaneously. The simultaneous retraction of the first driving device 46 and the second driving device 47 allows the first clamping block 2 and the second clamping block 3 to move away from each other, thus enabling the first clamping block 2 and the second clamping block 3 to pre-clamp the packaging bag. Because the first clamping block 2 and the second clamping block 3 operate synchronously, the pre-clamping device has a fast response speed, effectively improving packaging efficiency.

[0020] By employing a support plate 1, a first clamping block 2, a second clamping block 3, and a telescopic mechanism 4, and by designing two sets of telescopic mechanisms 4, respectively installed at the ends of the first clamping block 2 and the second clamping block 3, and through the coordinated action of the first driving device 46 and the second driving device 47 (both cylinders), the first clamping block 2 and the second clamping block 3 can simultaneously slide closer or further away. This synchronous operation mechanism significantly improves the response speed of the pre-clamping device, thereby effectively enhancing packaging efficiency. In contrast, existing pre-clamping devices often have simple structures, driven only by a single cylinder, resulting in asynchronous clamping block movements, slow response speed, and severely impacting the smoothness and efficiency of the packaging process. The telescopic mechanism 4 and the driving device allow for precise control of the clamping force of the first clamping block 2 and the second clamping block 3. This precise control effectively avoids damage or incomplete sealing of the packaging bag due to improper force during pre-clamping, significantly improving packaging quality and product sealing. By using two independent sets of telescopic mechanisms 4 and driving devices to control the movement of the first clamping block 2 and the second clamping block 3 respectively, the stability and reliability of the equipment are enhanced. This design avoids the risk of failure that may occur with a single drive unit, ensuring the continuity and stability of the pre-clamping operation.

[0021] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0022] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A pre-clamping device for a packaging machine, characterized in that, It includes a support plate (1), a first clamping block (2) for pre-clamping one side of the packaging bag, a second clamping block (3) for pre-clamping the other side of the packaging bag, and a telescopic mechanism (4) for driving the first clamping block (2) and the second clamping block (3) to slide closer or further away from each other; the telescopic mechanism (4) is provided at both ends of the first clamping block (2) and the second clamping block (3); the two sets of the telescopic mechanism (4) are respectively installed on the corresponding two sets of the support plate (1); The telescopic mechanism (4) includes a bending block (41) disposed at the end of the first clamping block (2), a moving block (42) disposed at the end of the second clamping block (3), a limiting block (43) disposed on the support plate (1), a push rod (44) for driving the moving block (42) to move, a connecting plate (45) disposed at one end of the push rod (44), a first driving device (46) for driving the bending block (41) to slide, and a second driving device (47) for driving the connecting plate (45) to move; the bending block (41) is slidably connected to the push rod (44); the moving block (42) is disposed at the other end of the push rod (44); the push rod (44) is slidably connected to the limiting block (43); the driving end of the first driving device (46) is drivenly connected to the bending block (41); the driving end of the second driving device (47) is drivenly connected to the connecting plate (45); the first driving device (46) and the second driving device (47) are both mounted on the support plate (1).

2. The pre-clamping device for a packaging machine as described in claim 1, characterized in that, Both the first drive device (46) and the second drive device (47) are cylinders.

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