A cutting device for a packaging machine

Abstract

This utility model discloses a cutting device for a packaging machine, belonging to the technical field of packaging machinery and equipment. The device includes a sliding base and an L-shaped slider plate adjustablely connected to the sliding base. The L-shaped slider plate is equipped with a pressing cylinder for clamping the workpiece and a flexible pressure plate. The device also includes a transverse cutting assembly and a longitudinal cutting assembly. The transverse cutting assembly includes a second cylinder and a slide rail fixed to the L-shaped slider plate, and an L-shaped slider plate that slides on the slide rail and is connected to the lower blade. The longitudinal cutting assembly includes a first cylinder fixed to the L-shaped slider plate and an upper blade connected to the first cylinder. This utility model effectively solves the adhesion problem caused by incomplete single-cutting of flexible materials through a two-step cutting method of first clamping, then transverse cutting, and finally longitudinal cutting. It has the advantages of clean cuts, thorough separation, and wide applicability.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery and equipment technology, and in particular to a cutting device for a packaging machine. Background Technology

[0002] In automated packaging production lines, cutting devices are indispensable key components. They are widely used in processes such as cutting packaging films, bags, or boxes to a fixed length, opening seals, and stamping. The cutting efficiency and quality of these devices directly affect the stability of the entire packaging process and the quality of the final product.

[0003] Currently, many packaging machines use a single-pass punching operation with an integrated die to form cuts, such as cross-shaped cuts. This method is highly efficient for materials with good rigidity, such as cardboard.

[0004] However, with the development of the packaging industry, more and more products are beginning to use flexible packaging materials with good toughness and ductility, such as composite films and plastic bags. When traditional single-cutting dies are applied to these flexible materials, the materials will undergo tensile deformation at the moment of force rather than break rapidly. Especially at the intersection of multiple cutting edges, stress concentration will cause the material to be overstretched, forming only thin filament connections and failing to be completely cut, resulting in severe cut adhesion. This adhesion not only affects the aesthetics of the product, but may also cause jamming in subsequent automated gripping, separating or conveying processes, forcing the production line to stop and severely restricting production efficiency.

[0005] Therefore, this utility model proposes a cutting device for packaging machines to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problem that in the existing technology, a cutting device for a packaging machine can easily cause adhesion at the cut, especially at the corners, due to the stretching and deformation of the material during a single punching of flexible packaging material, which is difficult to completely cut off. The present invention aims to provide a cutting device for a packaging machine with an improved structure that can effectively solve the above-mentioned problem.

[0007] This utility model provides a cutting device for a packaging machine, including a sliding base and an L-shaped slider plate that is adjustablely slidably connected to the top of the sliding base. A pressing cylinder and a flexible pressure plate are integrated on the L-shaped slider plate. The cylinder body of the pressing cylinder is vertically fixedly connected to the L-shaped slider plate, and the flexible pressure plate is fixedly connected to the piston rod output end of the pressing cylinder.

[0008] The device further includes a transverse cutting assembly and a longitudinal cutting assembly, both of which are mounted and fixed on an L-shaped slider plate. The transverse cutting assembly consists of a second cylinder, a slide rail, an L-shaped slider plate, and a lower blade. The cylinder body of the second cylinder is horizontally and parallel to the slide rail, and is fixedly connected to one side of the outer wall of the L-shaped slider plate. The L-shaped slider plate slides against the slide rail, and is fixedly connected to the piston rod output end of the second cylinder. The lower blade extends vertically downward and is fixedly connected to the bottom of the L-shaped slider plate. The longitudinal cutting assembly consists of a first cylinder and an upper blade. The cylinder body of the first cylinder is vertically fixedly connected to the L-shaped slider plate, and the upper blade is fixedly connected to the piston rod output end of the first cylinder.

[0009] Preferably, in order to achieve position adjustment of the L-shaped slider plate, the top of the sliding base is provided with two parallel guide rails, and the bottom of the L-shaped slider plate is fixed with a slider, which forms a sliding fit relationship with the guide rails.

[0010] Preferably, in order to form a uniform clamping force on the workpiece, the number of pressing cylinders is at least two, and the at least two pressing cylinders are arranged in an array along the side of the L-shaped slider plate away from the transverse cutting assembly.

[0011] Preferably, the axis of the first cylinder is perpendicular to the surface of the L-shaped slider plate, so that the upper blade, driven by the first cylinder, can perform precise reciprocating lifting and lowering motion along a path perpendicular to the length direction of the slide rail.

[0012] Preferably, to ensure the stability and guiding accuracy of the transverse cutting motion, the cross section of the slide rail adopts a dovetail groove structure or a linear guide rail structure, and the L-shaped slider plate is provided with a matching sliding groove or slider.

[0013] Preferably, the lower blade adopts an integrally formed L-shaped blade structure, the horizontal section of which is used to fix the bottom of the L-shaped slider plate two, and the end of the vertical section forms a cutting edge, the extension direction of which is parallel to the extension direction of the slide rail.

[0014] Preferably, in order to form a complete cross-shaped cut, the projections of the longitudinal cutting trajectory of the upper blade and the transverse cutting trajectory of the lower blade onto the same working plane are orthogonal to each other.

[0015] Preferably, in order to improve the structural rigidity and cutting effect during the downward cutting process, the blade body of the upper blade is designed to have a cross-shaped structure, and the center of the cross-shaped structure is fixedly connected to the piston rod output end of the first cylinder.

[0016] This utility model has the following beneficial effects: 1. This utility model, by setting up mutually independent transverse cutting components and longitudinal cutting components, and driving them with their respective power sources, realizes a two-step segmentation of the workpiece by first cutting transversely and then cutting longitudinally. This solves the problem that the workpiece is prone to sticking at the cut edge due to incomplete cutting when using the single cutting method in the prior art. It achieves the technical effect of clean cut edge and thorough separation, effectively improving product quality and production efficiency.

[0017] 2. This utility model solves the problem of workpiece displacement and vibration caused by uneven force or its own thinness during the cutting process by using a downward pressure cylinder to drive a flexible pressure plate to pre-press and fix the workpiece before the cutting action is performed. This achieves the technical effect of ensuring accurate cutting position and improving cutting stability.

[0018] 3. This utility model solves the limitations of traditional cutting devices, which have a fixed structure and are difficult to adapt to the cutting needs of products of different specifications, by adjusting the entire cutting assembly (L-shaped slider plate one) to the sliding base. This achieves the technical effect of enabling the device to flexibly adjust the cutting position and enhancing the equipment's versatility and applicability. Attached Figure Description

[0019] Figure 1 This is a perspective view of a cutting device for a packaging machine according to the present invention; Figure 2 This is a partial structural exploded view of a cutting device for a packaging machine according to the present invention; Figure 3 This is a partial structural schematic diagram of a cutting device for a packaging machine proposed in this utility model; Figure 4 This is a partial structural diagram of a cutting device for a packaging machine proposed in this utility model.

[0020] Legend: 1. Sliding base; 2. L-shaped slider plate one; 3. Downward pressing cylinder; 4. Flexible pressing plate; 5. First cylinder; 6. Upper blade; 7. Lower blade; 8. Second cylinder; 9. Slide rail; 10. L-shaped slider plate two. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Example

[0022] Please refer to Figures 1 to 4 This utility model provides a cutting device for a packaging machine, which aims to solve the problem of cut adhesion caused by incomplete cutting when cutting flexible packaging materials in the prior art.

[0023] like Figure 1 and Figure 2 As shown, a cutting device for a packaging machine includes a sliding base 1 and an L-shaped slider plate 2 slidably connected to the top of the sliding base 1. The top of the sliding base 1 has two parallel guide rails, and the bottom of the L-shaped slider plate 2 has a corresponding slider fixedly attached. The slider slides in cooperation with the guide rails. The L-shaped slider plate 2 serves as a support platform, on which a pressing mechanism, a transverse cutting assembly, and a longitudinal cutting assembly are integrated. The pressing mechanism includes a pressing cylinder 3 and a flexible pressure plate 4. The cylinder body of the pressing cylinder 3 is vertically fixedly connected to the L-shaped slider plate 2, and the flexible pressure plate 4 is fixedly connected to the piston rod output end of the pressing cylinder 3. There are at least two pressing cylinders 3, and these at least two pressing cylinders 3 slide along the L-shaped slider plate 2. The blocks 2 are arranged in an array on the side away from the transverse cutting assembly. The transverse cutting assembly includes a second cylinder 8, a slide rail 9, an L-shaped slider plate 10, and a lower blade 7. The cylinder body of the second cylinder 8 is fixedly connected to the outer wall of one side of the L-shaped slider plate 2 in a horizontal direction parallel to the slide rail 9. One end of the L-shaped slider plate 10 is slidably fitted to the slide rail 9, and the other end of the L-shaped slider plate 10 is fixedly connected to the piston rod output end of the second cylinder 8. The lower blade 7 extends vertically downward and is fixedly connected to the bottom of the L-shaped slider plate 10. The longitudinal cutting assembly includes a first cylinder 5 and an upper blade 6. The cylinder body of the first cylinder 5 is fixedly connected vertically to the L-shaped slider plate 2, and the upper blade 6 is fixedly connected to the piston rod output end of the first cylinder 5.

[0024] To solve the above-mentioned technical problems, the technical solution of this embodiment is that the cutting device for a packaging machine is provided with a transverse cutting component and a longitudinal cutting component that cooperate with each other in structure, and the cutting is completed through sequential action, thereby ensuring complete separation of the cuts.

[0025] Please refer to the following carefully. Figure 2 and Figure 3 The structure of the transverse cutting component will be described in detail below: The transverse cutting assembly consists of a second cylinder 8, a slide rail 9, an L-shaped slider plate 10, and a lowering blade 7. The cylinder body of the second cylinder 8 is horizontally and parallel to the slide rail 9, which is fixedly connected to one side of the outer wall of the L-shaped slider plate 2. The slide rail 9 has a dovetail groove structure or a linear guide rail structure. The L-shaped slider plate 10 is provided with a matching sliding groove or slider. In the assembled state, the L-shaped slider plate 10 slides within the slide rail 9 through its sliding groove or slider. This sliding groove or slider and guide rail cooperation structure ensures the high stability of the L-shaped slider plate 10 during reciprocating motion. For guiding accuracy, the other end of the L-shaped slider plate 2 10 is fixedly connected to the piston rod output end of the second cylinder 8. Therefore, when the second cylinder 8 works, the extension or retraction of its piston rod can directly drive the L-shaped slider plate 2 10 to reciprocate linearly along the length of the slide rail 9. The lower cutter 7 is an integrally formed L-shaped cutter. Its horizontal section is fixed to the bottom of the L-shaped slider plate 2 10, and the end of its vertical section forms a cutting edge. The extension direction of the cutting edge is parallel to the extension direction of the slide rail 9, so that the lower cutter 7 can perform precise transverse cutting on the workpiece when it moves with the L-shaped slider plate 2 10.

[0026] Based on the above embodiments, the present invention may further include the following preferred technical solutions: As a preferred embodiment, please refer to Figure 2 and Figure 4 The longitudinal cutting assembly consists of a first cylinder 5 and an upper blade 6. The cylinder body of the first cylinder 5 is vertically fixed to the L-shaped slider plate 2, and its axis is perpendicular to the surface of the L-shaped slider plate 2. The upper blade 6 is fixedly connected to the piston rod output end of the first cylinder 5. When the first cylinder 5 is working, the extension and retraction of its piston rod drives the upper blade 6 to reciprocate up and down along a path perpendicular to the length direction of the slide rail 9. The blade body of the upper blade 6 has a cross-shaped structure, and the center of the cross-shaped structure is fixedly connected to the piston rod output end of the first cylinder 5. This structure not only enhances the structural rigidity during the downward cutting process, but also ensures the uniform transmission of cutting force.

[0027] As another preferred embodiment, the longitudinal cutting trajectory of the upper blade 6 and the transverse cutting trajectory of the lower blade 7 are orthogonal to each other in the same working plane. With this arrangement, when the transverse cutting component and the longitudinal cutting component move in sequence, a complete cross-shaped cut can be formed on the workpiece, thereby achieving effective division of the workpiece.

[0028] In another preferred embodiment, in order to achieve adaptability to workpieces of different specifications, the top of the sliding base 1 is provided with two parallel guide rails, and the bottom of the L-shaped slider plate 2 is fixed with a slider. The slider and the guide rails on the sliding base 1 form a sliding fit. By loosening the locking bolt, the operator can manually push the L-shaped slider plate 2 and all the cutting components on it to the sliding base 1 to adjust the overall position. After the adjustment is in place, it is fixed by locking the bolt. This process is convenient and greatly improves the applicability of the device.

[0029] Working principle: During the cutting process, firstly, the L-shaped slider plate 2 inside the sliding base 1 is adjusted, thereby adjusting the distance between the L-shaped slider plate 2 and the cutting tool at the top. After adjustment, the two downward pressure cylinders 3 are activated, driving the flexible pressure plate 4 at the bottom to press and fix the workpiece to be cut. Then, the second cylinder 8 is activated to push the L-shaped slider plate 10 to slide outside the slide rail 9. Since the bottom of the L-shaped slider plate 10 is connected to the lower blade 7, the horizontal cutting of the workpiece is completed during the movement of the lower blade 7. After the cutting is completed, the first cylinder 5 is activated to drive the upper blade 6 to make a vertical downward cut to complete the secondary division. Thus, the two-stage cutting avoids the phenomenon of workpiece sticking due to the tool not cutting in place.

Claims

1. A cutting device for a packaging machine, comprising: Sliding base (1); L-shaped slider plate (2), which is slidably connected to the top of the sliding base (1); The cylinder (3) is vertically fixed to the L-shaped slider plate (2). A flexible pressure plate (4) is fixedly connected to the piston rod output end of the lowering cylinder (3); The characteristic feature is that the cutting device for a packaging machine further includes a transverse cutting component and a longitudinal cutting component, both of which are disposed on the L-shaped slider plate (2); The transverse cutting assembly includes a second cylinder (8), a slide rail (9), an L-shaped slider plate two (10), and a lower blade (7). The cylinder body of the second cylinder (8) is fixedly connected to the slide rail (9) in a horizontal direction parallel to one side outer wall of the L-shaped slider plate one (2). One end of the L-shaped slider plate two (10) is slidably fitted to the slide rail (9), and the other end of the L-shaped slider plate two (10) is fixedly connected to the piston rod output end of the second cylinder (8). The lower blade (7) extends vertically downward and is fixedly connected to the bottom of the L-shaped slider plate two (10). The longitudinal cutting assembly includes a first cylinder (5) and an upper blade (6). The cylinder body of the first cylinder (5) is vertically fixedly connected to the L-shaped slider plate (2), and the upper blade (6) is fixedly connected to the piston rod output end of the first cylinder (5).

2. The cutting device for a packaging machine according to claim 1, characterized in that, The top of the sliding base (1) is provided with two parallel guide rails, and the bottom of the L-shaped slider plate (2) is fixed with a slider. The slider slides in cooperation with the guide rails to adjust the position of the L-shaped slider plate (2) on the sliding base (1).

3. The cutting device for a packaging machine according to claim 1, characterized in that, The number of the pressing cylinders (3) is at least two, and the at least two pressing cylinders (3) are arranged in an array along the side of the L-shaped slider plate (2) away from the transverse cutting assembly to form a uniform clamping force on the workpiece.

4. The cutting device for a packaging machine according to claim 1, characterized in that, The axis of the first cylinder (5) is perpendicular to the surface of the L-shaped slider plate (2). Under the drive of the first cylinder (5), the upper blade (6) can reciprocate up and down along a path perpendicular to the length direction of the slide rail (9).

5. A cutting device for a packaging machine according to claim 1, characterized in that, The slide rail (9) has a dovetail groove structure or a linear guide structure in cross section. The L-shaped slider plate (10) is provided with a matching sliding groove or slider to ensure the stability and guiding accuracy of the L-shaped slider plate (10) during reciprocating motion.

6. A cutting device for a packaging machine according to claim 1, characterized in that, The lower cutter (7) is an integrally formed L-shaped cutter. Its horizontal section is fixed to the bottom of the L-shaped slider plate (10), and the end of its vertical section forms a cutting edge. The extension direction of the cutting edge is parallel to the extension direction of the slide rail (9).

7. A cutting device for a packaging machine according to claim 1, characterized in that, The longitudinal cutting trajectory of the upper blade (6) and the transverse cutting trajectory of the lower blade (7) are orthogonal to each other in the same working plane, thereby forming a cross-shaped cut on the workpiece.

8. A cutting device for a packaging machine according to claim 4, characterized in that, The blade body of the upper blade (6) has a cross-shaped structure, and the center of the cross-shaped structure is fixedly connected to the piston rod output end of the first cylinder (5) to improve the structural rigidity and cutting effect during the downward cutting process.

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