Gate type cutting mechanism

Abstract

The utility model discloses a gate type cutting mechanism which comprises a cutter table and a cutter assembly, the cutter table and the cutter assembly are matched to form a structure capable of cutting off a product passing between the cutting end of the cutter assembly and the cutter table, and the cutter table comprises a rear side table top and a front side table top which are sequentially arranged in the moving direction of the product. The height of the rear side table top is larger than that of the front side table top, and the rear side table top and the front side table top are located on the two sides under the blade respectively. According to the utility model, jamming caused by downward bending deformation of the end part of a product can be reduced, so that the smoothness of equipment operation is improved.

Description

Technical Field

[0001] This utility model relates to the field of cutting machine technology, and in particular to a gate-type cutting mechanism. Background Technology

[0002] In the production process of pharmaceutical flexible packaging bags, the guillotine cutting device is a key processing equipment, and its cutting accuracy directly affects the forming quality of the packaging bag and the reliability of subsequent packaging processes. Existing typical guillotine cutting mechanisms usually consist of a moving blade assembly that reciprocates along a vertical guide rail and a fixed blade assembly or blade groove fixed on a base, forming a shearing pair. During continuous operation, the product to be cut is conveyed forward by a conveyor mechanism. When the front end of the product reaches the set cutting position, the moving blade performs a downward pressing action, forming a shearing closure with the fixed blade or blade groove, thereby completing the cutting and shaping of the product end.

[0003] However, traditional guillotine cutting mechanisms have significant technical drawbacks in practical applications:

[0004] First, during the instantaneous downward pressure of the moving blade, the lack of effective positioning and constraint devices on both sides of the product's cutting edge leaves the end of the product in a free state. This is particularly problematic when processing thin, flexible pharmaceutical packaging bags. Due to the low bending stiffness of the packaging material itself, the end of the bag is highly susceptible to unexpected downward bending deformation under the impact load of the moving blade. This deformation not only causes a shift in the shear line position but, more seriously, may cause the end of the bag to become embedded in the non-working gap area between the moving blade and the fixed blade or blade groove, resulting in incomplete cutting or burrs and other processing defects.

[0005] Secondly, after the cutting process is completed, the newly formed product end, having lost the pressure of the moving blade, will experience a certain downward displacement under the influence of gravity. When the conveyor mechanism restarts to transfer the product to the next station, this falling product end is very likely to collide with the guide structure of the worktable in front, easily causing jamming. This requires manual intervention and adjustment, severely affecting the smooth operation of the equipment.

[0006] How to solve the above problems has become an urgent technical issue. Utility Model Content

[0007] The purpose of this invention is to provide a gate-type cutting mechanism that can reduce jamming and improve the smoothness of equipment operation.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] This utility model provides a gate-type cutting mechanism, including a cutting board and a cutting blade assembly. The cutting board and the cutting blade assembly cooperate to form a structure that can cut off products passing between the cutting end of the cutting blade assembly and the cutting board. The cutting board includes a rear side table and a front side table arranged sequentially along the moving direction of the product. The height of the rear side table is greater than the height of the front side table, and the rear side table and the front side table are located on both sides directly below the blade.

[0010] Furthermore, the front of the knife table is provided with a sloping surface, which is located in front of the front side table surface.

[0011] Furthermore, the cutting knife assembly includes a guide assembly, which is disposed on the cutting table and has a blade holder slidably disposed on the guide assembly. The blade holder has a blade disposed on its bottom surface, and the blade holder cooperates with a driving device to form a structure that can drive the blade holder to reciprocate up and down along the guide assembly.

[0012] Furthermore, the guide assembly includes at least one guide rod, which is vertically disposed on the cutting board and slidably sleeved with the blade holder.

[0013] Furthermore, there are two guide rods, each of which is slidably sleeved with both ends of the blade fixing seat and its lower ends are fixedly connected to both ends of the blade holder, and the upper ends of the two guide rods are connected by a top plate.

[0014] Furthermore, the blade holder is provided with a buffer clamp mechanism for pressing the two sides of the product.

[0015] Furthermore, the buffer clamp mechanism includes a buffer clamp plate, the bottom surface of which is provided with a buffer rubber strip, and the top surface of the buffer clamp plate is connected to the bottom surface of the blade fixing seat through a plurality of spring pins.

[0016] Furthermore, both the buffer clamp and the buffer strip have a strip-shaped through hole in the middle, and the two strip-shaped through holes are connected to form a structure for accommodating and allowing the lower end of the blade to pass through.

[0017] Furthermore, the cutting board has a knife groove located directly below the blade, and the rear and front surfaces are located on either side of the knife groove.

[0018] Due to the adoption of the above structure, the beneficial effects of this utility model are as follows:

[0019] This invention features a rear table and a front table, with the rear table being higher than the front table. This design ensures that when a product is conveyed between the cutting assembly and the cutting board and is cut, even if the end of the new product after cutting has some bending and falling, it will not be blocked by the front table. This effectively prevents jamming, allowing the equipment to work continuously, smoothly, and at high speed, thus improving cutting efficiency.

[0020] The present invention will become clearer from the following description and in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0023] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0024] Figure 3 This is a front view of the present invention;

[0025] Figure 4 This is the left view of the present invention.

[0026] Attached reference numerals: 1-top plate, 2-guide rod, 3-blade fixing seat, 4-blade, 5-buffer clamp mechanism, 51-spring post, 52-buffer clamp plate, 53-buffer rubber strip, 6-blade table, 61-rear side table, 62-front side table, 7-sloping surface, 8-blade groove. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please refer to Figures 1 to 4The present invention provides a gate-type cutting mechanism, including a cutting table 6 and a cutting blade assembly. The cutting table 6 and the cutting blade assembly cooperate to form a structure capable of cutting products passing between the cutting end of the cutting blade assembly and the cutting table 6. The cutting table 6 includes a rear side table 61 and a front side table 62 arranged sequentially along the moving direction of the product. The height of the rear side table 61 is greater than the height of the front side table 62, and the rear side table 61 and the front side table 62 are located on both sides directly below the blade 4. The rear table 61 and the front table 62 form a height difference. During equipment operation, the product can pass between the cutting end of the cutter assembly and the cutting table 6. When the front end of the product passes the rear table 61 and the front table 62 and reaches the set cutting position, the cutting end of the cutter assembly and the cutting table 6 cooperate to cut the product. The cut part falls onto the front table 62 under the action of gravity, while the uncut remaining part is located on the rear table 61. This makes the height of the new product end formed after cutting greater than the height of the front table 62. Therefore, even if the new product end has a certain degree of bending and falls, it will not be blocked by the front table 62, effectively avoiding jamming. This allows the equipment to work continuously, smoothly and at high speed, improving cutting efficiency.

[0029] In this invention, the front of the cutting table 6 is provided with a ramp 7, which is located in front of the front platform 62. The cut part of the product can slide down the ramp 7 under the action of gravity; on the one hand, this further reduces the height of the cut part and avoids the cut part from blocking the end of the new product; on the other hand, it can better connect with the conveying mechanism used to transport the cut part to the next process, effectively avoiding the obstruction of the forward movement of the uncut part of the product due to the cut part of the product remaining on the cutting table 6, and further improving the smoothness of continuous operation of the equipment.

[0030] In this invention, the cutting assembly includes a guide assembly, which is mounted on the cutting table 6 and has a blade holder 3 slidably mounted thereon. A blade 4 is mounted on the bottom surface of the blade holder 3. The blade holder 3 cooperates with a driving device (not shown) to form a structure capable of driving the blade holder 3 to reciprocate up and down along the guide assembly. During operation, the product passes between the blade 4 and the cutting table 6. When the front end of the product reaches the set cutting position, the driving device drives the blade holder 3 to move downwards along the guide assembly, causing the blade 4 to move downwards synchronously until it forms a shearing closure with the cutting table 6, thereby completing the product cutting and shaping.

[0031] Specifically, the blade 4 is fixedly embedded in the bottom surface of the blade holder 3, and the bottom of the blade 4 is the cutting edge.

[0032] It is understood that the drive device can adopt existing technologies such as hydraulic cylinders or electric rods. The drive device is not the main improvement of this utility model. Its specific structure and corresponding matching relationship can be referred to the hydraulic cylinder disclosed in the packaging paper cutting equipment with application number CN202320946660.3, and will not be repeated here.

[0033] In this utility model, the guide assembly includes at least one guide rod 2, which is vertically arranged on the knife table 6 and slidably sleeved with the blade fixing seat 3, ensuring that the blade fixing seat 3 always remains perpendicular to the knife table 6 during its up-and-down reciprocating motion.

[0034] In this invention, there are two guide rods 2. The two guide rods 2 are slidably sleeved at both ends of the blade holder 3, and the lower ends of the two guide rods 2 are fixedly connected to both ends of the cutting board 6. The upper ends of the two guide rods 2 are connected via a top plate 1. The two ends of the two guide rods 2 are fixedly connected to the cutting board 6 and the top plate 1, thus forming a U-shaped structure. This allows the product to pass through while limiting the displacement distance of the blade holder 3, and also enhances the stability of the tops of the two guide rods 2 and the perpendicularity of the guide rods 2 to the cutting board 6. The top plate 1 can also be used to fixally connect to the driving device.

[0035] In this invention, the blade holder 3 is provided with a buffer clamping mechanism 5 for pressing down on both sides of the product. During cutting, the buffer clamping mechanism 5 presses down on the parts of the product located on both sides of the blade 4, fixing the ends of the product and effectively reducing the downward bending of the product as the blade 4 falls.

[0036] In this utility model, the buffer clamp mechanism 5 includes a buffer clamp plate 52, the bottom surface of the buffer clamp plate 52 is provided with a buffer rubber strip 53, and the top surface of the buffer clamp plate 52 is connected to the bottom surface of the blade fixing seat 3 through a plurality of spring pins 51.

[0037] Specifically, the buffer strip 53 is attached and fixed to the bottom surface of the buffer clamp 52; during the process of the blade 4 falling synchronously with the blade fixing seat 3 to cut the product, the buffer clamp mechanism 5 falls synchronously with the blade fixing seat 3 until the bottom surface of the buffer strip 53 abuts against the top surface of the cutting table 6, thereby pressing down the part of the product located on both sides of the blade 4. As the blade fixing seat 3 falls further, the spring column 51 is compressed. While the height of the buffer clamp 52 remains unchanged, the blade 4 can continue to fall until it cuts the product.

[0038] It should be noted that the spring post 51 includes a spring, and the two ends of the spring are fixedly connected to the buffer clamp 52 and the blade fixing seat 3, respectively. Furthermore, a sliding column is slidably sleeved on the inner side of the spring. One end of the sliding column is fixedly connected to the buffer clamp 52 and the other end of the sliding column is slidably sleeved to the blade fixing seat 3. Alternatively, one end of the sliding column is slidably sleeved to the buffer clamp 52 and the other end of the sliding column is fixedly connected to the blade fixing seat 3. This can effectively prevent radial twisting when the spring is compressed and deformed, and ensure that the extension and retraction direction of the spring post 51 is always perpendicular to the blade holder 6.

[0039] In this utility model, the buffer clamp 52 and the buffer rubber strip 53 are both provided with strip-shaped through holes in the middle position. The two strip-shaped through holes are connected to form a structure for accommodating and allowing the lower end of the blade 4 to pass through, so as to simultaneously press down the parts of the product located on both sides of the blade 4.

[0040] Preferably, the buffer strip 53 is a soft structure made of materials such as rubber or silicone, so that when pressed, the buffer strip 53 can undergo elastic deformation to overcome the height difference between the rear table surface 61 and the front table surface 62 and press down the parts of the product located on both sides of the blade 4.

[0041] Preferably, when the spring 51 is in an uncompressed state, the lower end of the blade 4 is accommodated in the strip-shaped through hole, that is, at this time the lowest height of the blade 4 is greater than the lowest height of the buffer strip 53. On the one hand, it can play the role of covering and protecting the cutting end of the blade 4. On the other hand, during cutting, the buffer strip 53 contacts the product before the blade 4, so that the product has been pressed and clamped by the buffer clamp mechanism 5 before the blade 4 cuts the product, which can better fix the product and reduce the downward bending of the product as the blade 4 falls.

[0042] It is understood that the buffer clamp 52 can also be a two-piece structure, with the two buffer clamps 52 located on both sides of the blade 4 and the bottom surface of both buffer clamps 52 being provided with buffer rubber strips 53. During cutting, the two buffer rubber strips 53 abut against the rear table surface 61 and the front table surface 62, respectively.

[0043] In this utility model, a knife groove 8 is provided on the cutting table 6. The knife groove 8 is located directly below the blade 4. The rear table surface 61 and the front table surface 62 are located on both sides of the knife groove 8, thereby providing sufficient displacement distance to ensure that the blade 4 can cut the product while effectively avoiding damage to the cutting end of the blade 4 caused by collision with the cutting table 6.

[0044] Optionally, the knife groove 8 penetrates the knife table 6.

[0045] In use, the product passes between the blade 4 and the cutting table 6. When the front end of the product passes the rear table 61 and the front table 62 to reach the set cutting position, the driving device drives the blade fixing seat 3 to slide downward along the guide rod 2, causing the blade 4 and the buffer clamp mechanism 5 to move downward synchronously until the buffer rubber strip 53 abuts against the cutting table 6. Subsequently, as the driving device drives the blade fixing seat 3 and the blade 4 to move further downward, the spring column 51 is compressed and the buffer rubber strip 53 undergoes elastic deformation, pressing down the parts of the product located on both sides of the blade 4. At the same time, the height of the lower end of the blade 4 is further reduced until it forms a shearing closure with the cutting table 6, thereby completing the cutting and shaping of the product. Therefore, before cutting the product, this invention can press down the two sides of the product, reducing the unexpected downward bending deformation of the product caused by the falling blade 4. Even if the end of the product undergoes downward bending deformation, it will not abut against the front table 62, thereby effectively reducing jamming and improving the smoothness of equipment operation.

[0046] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above. Devices and structures not described in detail herein should be understood as being implemented in a conventional manner within the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of this utility model using the disclosed methods and techniques, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. This does not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, still fall within the protection scope of the technical solution of this utility model.

Claims

1. A gate-type cutting mechanism, characterized in that: The device includes a cutting board (6) and a cutting blade assembly. The cutting board (6) and the cutting blade assembly cooperate to form a structure capable of cutting products passing between the cutting end of the cutting blade assembly and the cutting board (6). The cutting board (6) includes a rear side table (61) and a front side table (62) arranged sequentially along the product's movement direction. The height of the rear side table (61) is greater than the height of the front side table (62), and the rear side table (61) and the front side table (62) are located on both sides directly below the blade (4).

2. The gate-type cutting mechanism according to claim 1, characterized in that: The front of the knife table (6) is provided with a sloping surface (7), which is located in front of the front side table surface (62).

3. A gate-type cutting mechanism according to claim 1 or 2, characterized in that: The cutting knife assembly includes a guide assembly, which is disposed on the cutting table (6) and a blade holder (3) is slidably disposed on the guide assembly. A blade (4) is disposed on the bottom surface of the blade holder (3). Furthermore, the blade holder (3) cooperates with a driving device to form a structure that can drive the blade holder (3) to reciprocate up and down along the guide assembly.

4. The gate-type cutting mechanism according to claim 3, characterized in that: The guide assembly includes at least one guide rod (2), which is vertically disposed on the knife table (6) and is slidably sleeved with the blade holder (3).

5. A gate-type cutting mechanism according to claim 4, characterized in that: The number of guide rods (2) is two. The two guide rods (2) are slidably sleeved with the two ends of the blade fixing seat (3) and the lower ends of the two guide rods (2) are fixedly connected to the two ends of the blade table (6). The upper ends of the two guide rods (2) are connected by a top plate (1).

6. A gate-type cutting mechanism according to claim 4 or 5, characterized in that: The blade holder (3) is provided with a buffer clamp mechanism (5) for pressing the two sides of the product.

7. A gate-type cutting mechanism according to claim 6, characterized in that: The buffer clamp mechanism (5) includes a buffer clamp plate (52), the bottom surface of which is provided with a buffer rubber strip (53), and the top surface of the buffer clamp plate (52) is connected to the bottom surface of the blade fixing seat (3) through a number of spring pins (51).

8. A gate-type cutting mechanism according to claim 7, characterized in that: Both the buffer clamp (52) and the buffer strip (53) have a strip-shaped through hole in the middle position, and the two strip-shaped through holes are connected to form a structure for accommodating and allowing the lower end of the blade (4) to pass through.

9. A gate-type cutting mechanism according to claim 1 or 2, characterized in that: The cutting board (6) has a cutting groove (8) located directly below the blade (4), and the rear table surface (61) and the front table surface (62) are located on both sides of the cutting groove (8).

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