Lifting mechanism of circular tool apron

Abstract

The utility model discloses a lifting mechanism of a circular knife holder, which comprises the circular knife holder and a heating roller component slidably arranged on the circular knife holder through a sliding seat, the circular knife holder comprises a horizontally arranged bottom plate and side plates respectively arranged on two sides of the top end of the bottom plate, and sliding grooves corresponding to the sliding seat are respectively arranged in the two side plates. The two ends of the heating roller assembly are rotationally connected to the corresponding sliding bases through bearings correspondingly, and air cylinders connected to the sliding bases are arranged at the top ends of the sliding grooves. The device is simple in structure, the heating roller assembly is lifted through the air cylinder, cooling and reheating are avoided, the production efficiency is improved, the heating roller assembly does not need to be manually lifted, and the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of die-cutting machines, in particular to a lifting mechanism of a circular knife seat. Background Art

[0002] The circular knife holder is a supporting device for precision cutting. A circular knife refers to a knife with an arc-shaped cutting edge, which is mostly used for circles and round indentations. It is used in circular knife die-cutting machines and continuously rotates in the form of a hob for die-cutting. It is one of the most efficient equipment in the die-cutting machine. With the continuous development of science and technology, people's requirements for the manufacturing process of circular knife holders are getting higher and higher.

[0003] The existing circular blade holder has certain drawbacks. The heated roller assembly needs to be kept at a temperature exceeding 140°C during operation, resulting in a very high temperature throughout the circular blade holder. This makes it impossible to manually lift the blade holder for material changes, and the blade holder cannot operate during the cooling process, impacting production progress. Reheating after material changes increases waiting time and reduces safety. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of the utility model is to provide a lifting mechanism for a circular knife seat to overcome the deficiencies in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The utility model discloses a lifting mechanism of a circular knife seat, comprising a circular knife seat and a heating roller assembly slidably arranged on the circular knife seat through a slide seat, the circular knife seat comprising a horizontally arranged bottom plate and side plates respectively arranged on both sides of the top end of the bottom plate, a slide groove corresponding to the slide seat is respectively arranged in the two side plates, the two ends of the heating roller assembly are respectively connected to the corresponding slide seat through bearings, and the top end of the slide groove is provided with a cylinder connected to the slide seat.

[0007] Furthermore, in the above-mentioned lifting mechanism of the circular knife holder, the cylinder is arranged at the top ends of the two side plates through a cylinder seat, and a first thermal insulation pad is arranged between the cylinder seat and the corresponding side plate.

[0008] Furthermore, in the lifting mechanism of the circular knife seat mentioned above, mounting bolts are respectively provided at both ends of the cylinder seat, and the mounting bolts pass through the cylinder seat and the first thermal insulation pad and are connected to the corresponding side plate. An insulation block is provided between the mounting bolts and the cylinder seat.

[0009] Furthermore, in the above-mentioned lifting mechanism of the circular knife holder, the piston rod of the cylinder is connected to the slide seat through a lifting block, and the lifting block is slidably arranged in the slide groove.

[0010] Furthermore, in the above-mentioned lifting mechanism of the circular knife holder, a second heat insulation pad is provided between the lifting block and the slide seat.

[0011] Furthermore, in the above-mentioned lifting mechanism of the circular knife holder, the piston rod of the cylinder is connected to the lifting block through a connecting block.

[0012] Furthermore, in the above-mentioned lifting mechanism of the circular knife holder, a pressure sensor is provided between the connecting block and the lifting block.

[0013] Furthermore, in the above-mentioned lifting mechanism of the circular knife holder, the cylinder is connected to an electric proportional valve.

[0014] Furthermore, in the lifting mechanism of the above-mentioned circular knife seat, an installation cavity for accommodating the pressure sensor is provided in the lifting block, the installation cavity is provided near one end opening of the cylinder, and the width of the opening is smaller than the width of the installation cavity, the connecting block includes a connecting boss slidably provided in the installation cavity and a connecting rod connected to the cylinder, the width of the connecting boss is larger than the width of the opening, and the pressure sensor is connected to the connecting boss.

[0015] Furthermore, in the above-mentioned lifting mechanism of the circular knife holder, a transition block is provided between the pressure sensor and the lifting block.

[0016] Furthermore, in the above-mentioned lifting mechanism of the circular knife holder, a positioning hole corresponding to the transition block is recessed in the bottom wall of the installation cavity.

[0017] Compared with the existing technology, the advantages of the present invention are: the present invention has a simple structure, and the heating roller assembly is raised and lowered by the cylinder to avoid cooling and reheating, thereby improving production efficiency. There is no need to manually lift the heating roller assembly, thereby improving safety of use; the force applied by the cylinder to the heating roller assembly is accurately controlled by the electrical proportional valve and the pressure sensor, that is, the force applied to the hot-pressed formed product is accurately controlled, thereby improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Shown is a structural schematic diagram of the lifting mechanism of the circular knife seat in a specific embodiment of the present utility model.

[0020] Figure 2Shown is a schematic diagram of the connection between the cylinder and the slide in a specific embodiment of the present utility model.

[0021] Figure 3 Shown is a cross-sectional view of the connection between the cylinder and the slide seat in a specific embodiment of the present utility model.

[0022] Figure 4 Shown is an exploded schematic diagram of the mounting bolts, the heat insulating block and the cylinder seat in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0023] The following is a detailed description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0026] For example, see Figures 1 to 4 As shown, a lifting mechanism of a circular knife seat includes a circular knife seat 1 and a heating roller assembly slidably set on the circular knife seat 1 through a slide 2. The circular knife seat 1 includes a horizontally arranged bottom plate and side plates respectively arranged on both sides of the top of the bottom plate. The two side plates are respectively provided with slide grooves corresponding to the slide 2. The two ends of the heating roller assembly are respectively connected to the corresponding slide 2 through bearings. The top of the slide groove is provided with a cylinder 3 connected to the slide 2.

[0027] In this technical solution, the circular knife holder composed of the bottom plate and the two side plates is set on the frame of the die-cutting machine through guide rails, etc., and the two ends of the heating roller assembly are respectively set in the slide grooves of the corresponding side plates through slides. The piston rod of the cylinder is connected to the slide. The slide is driven up and down by the extension and contraction of the cylinder piston rod, thereby driving the heating roller assembly up and down, avoiding cooling and reheating, improving production efficiency, eliminating the need for manual lifting of the heating roller assembly, and improving safety of use; a handle is also provided on the outside of the slide for assembly before production or disassembly and assembly for daily maintenance, and threaded holes are provided to cooperate with lifting rings, etc. for easy transportation.

[0028] For example, see Figures 1 to 4 As shown, the cylinder 3 is arranged at the top of the two side plates through the cylinder seat 4, and a first thermal insulation pad 5 is arranged between the cylinder seat 4 and the corresponding side plate.

[0029] In this technical solution, the cylinder is fixed to the cylinder seat by conventional bolts. The cylinder seat is a plate-like structure with a through hole in the center recessed to accommodate the sliding and extension of the cylinder piston rod. A first thermal insulation pad is arranged between the two sides of the top of the slide groove and the cylinder seat to prevent the heat of the heating roller assembly from being transferred to the cylinder, thereby extending the service life of the cylinder.

[0030] For example, see Figures 1 to 4 As shown, mounting bolts 41 are respectively provided at both ends of the cylinder seat 4 , and the mounting bolts 41 pass through the cylinder seat 4 and the first thermal insulation pad 5 and are connected to the corresponding side plates. A thermal insulation block 42 is provided between the mounting bolts 41 and the cylinder seat 4 .

[0031] In this technical solution, a first countersunk hole corresponding to the thermal insulation block is provided in the cylinder seat, the thermal insulation block is embedded in the first countersunk hole of the cylinder seat, and a second countersunk hole corresponding to the mounting bolt is provided. The mounting bolt is provided in the second countersunk hole and is connected to the top of the side plate after passing through the first thermal insulation pad, so that the cylinder seat and the first thermal insulation pad are installed on the top of the side plate. The thermal insulation block separates the mounting bolt and the cylinder seat to prevent the heat of the circular knife seat from being transferred to the cylinder seat through the mounting bolt.

[0032] For example, see Figures 1 to 4 As shown, the piston rod of the cylinder 3 is connected to the slide 2 through the lifting block 6, and the lifting block 6 is slidably arranged in the slide groove.

[0033] In this technical solution, the lifting block is set on the top of the slide by conventional bolts, etc., and the piston rod of the cylinder drives the lifting block to rise and fall, thereby driving the slide to rise and fall.

[0034] For example, see Figures 1 to 3 As shown, a second heat insulating pad 7 is provided between the lifting block 6 and the slide seat 2 .

[0035] In this technical solution, the width of the lifting block is smaller than the width of the slide, that is, the two side walls of the lifting block and the corresponding inner walls of the slide are spaced apart to reduce the heat transfer between the side plate and the lifting block. The second thermal insulation pad reduces the heat transfer between the slide and the lifting block, thereby reducing the heat transfer to the piston rod of the cylinder.

[0036] For example, see Figures 1 to 4 As shown, the piston rod of the cylinder 3 is connected to the lifting block 6 through the connecting block 8.

[0037] In this technical solution, the connecting block is connected to the piston rod of the cylinder by a threaded connection, which is convenient for disassembly and assembly, and the lifting block is connected to the piston rod of the cylinder, thereby driving the slide to rise and fall through the lifting block.

[0038] For example, see Figures 1 to 4 As shown, a pressure sensor 9 is provided between the connecting block 8 and the pulling block 6 .

[0039] In this technical solution, the pressure sensor is a conventional structure, which is used to monitor the pressure between the connecting block and the lifting block, that is, to monitor the force exerted by the heating roller assembly on the hot-pressed product, thereby improving the accuracy of applying pressure to the hot-pressed product; in addition, through the monitoring of the pressure sensor, the consistency of the pressure at both ends of the heating roller assembly is ensured, that is, the consistency of the pressure of the heating roller assembly on the hot-pressed product is improved.

[0040] For example, see Figure 1 As shown, the cylinder 3 is connected to an electric proportional valve 10 .

[0041] In this technical solution, the electric proportional valve and the pressure sensor are connected to an external conventional control device. The electric proportional valve is connected to the cylinder through a conventional air pipe. The force calculated by the feedback signal of the pressure sensor is compared with the preset force, and then the pressure of the cylinder is controlled by the electric proportional valve, thereby achieving automatic and precise control of the pressure of the heating roller assembly on the hot-pressed formed product.

[0042] For example, see Figures 1 to 4 As shown, an installation cavity for accommodating the pressure sensor 9 is provided in the lifting block 6. The installation cavity is set near the opening at one end of the cylinder 3, and the width of the opening is smaller than the width of the installation cavity. The connecting block 8 includes a connecting boss 81 slidably set in the installation cavity and a connecting rod 82 connected to the cylinder 3. The width of the connecting boss 81 is larger than the width of the opening, and the pressure sensor 9 is connected to the connecting boss 81.

[0043] In this technical solution, an opening groove with its opening facing the cylinder is provided in the lifting block, which serves as an installation cavity for accommodating the pressure sensor and the connecting table. The opening of the opening groove reduces its width by protruding a limiting boss. The connecting rod is connected to the piston rod of the cylinder by a threaded connection. The connecting boss and the connecting rod are integrally formed or assembled in parts. The piston rod of the cylinder drives the connecting block to move, and through the interaction between the connecting table and the limiting boss, drives the lifting block to rise, thereby driving the slide and the heating roller assembly to rise.

[0044] For example, see Figures 1 to 4 As shown, a transition block 20 is provided between the pressure sensor 9 and the pulling block 6 .

[0045] In this technical solution, both ends of the pressure sensor are provided with studs, which are respectively connected to the connecting boss and the transition block by threaded connection.

[0046] For example, see Figures 1 to 4 As shown, a positioning hole corresponding to the transition block 20 is recessed in the bottom wall of the installation cavity.

[0047] In this technical solution, the bottom end of the transition block is slidably arranged in the positioning hole. When the heating roller assembly needs to apply downward pressure, the piston rod of the cylinder extends and acts on the bottom wall of the positioning hole through the connecting block, the pressure sensor and the transition block, that is, acts on the lifting block, the slide and the heating roller assembly. The transition block increases the effective area of ​​the pressure sensor and the lifting block, improves the uniformity of the force on the lifting block, and limits the moving direction of the transition block through the positioning hole to ensure that it is always perpendicular to the lifting block.

[0048] To sum up, the utility model has a simple structure. The heating roller assembly is raised and lowered by the cylinder to avoid cooling and reheating, thereby improving production efficiency. There is no need to manually lift the heating roller assembly, thereby improving safety of use. The force applied by the cylinder to the heating roller assembly is precisely controlled by the electrical proportional valve and the pressure sensor, that is, the force applied to the hot-pressed formed product is precisely controlled, thereby improving product quality.

[0049] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0050] The above description is only a specific implementation of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A lifting mechanism for a circular knife holder, characterized in that: It includes a circular knife seat and a heating roller assembly slidably set on the circular knife seat through a slide. The circular knife seat includes a horizontally arranged bottom plate and side plates respectively arranged on both sides of the top of the bottom plate. The two side plates are respectively provided with a slide groove corresponding to the slide seat. The two ends of the heating roller assembly are respectively connected to the corresponding slide seat through bearings. The top of the slide groove is provided with a cylinder connected to the slide seat.

2. The lifting mechanism of the circular knife holder according to claim 1, characterized in that: The cylinder is arranged on the top ends of the two side plates through a cylinder seat, and a first heat insulation pad is arranged between the cylinder seat and the corresponding side plate.

3. The lifting mechanism of the circular knife holder according to claim 2, characterized in that: Mounting bolts are respectively provided at both ends of the cylinder seat. The mounting bolts pass through the cylinder seat and the first thermal insulation pad and are then connected to the corresponding side plates. A thermal insulation block is provided between the mounting bolts and the cylinder seat.

4. The lifting mechanism of the circular knife holder according to claim 1, characterized in that: The piston rod of the cylinder is connected to the slide seat through a lifting block, and the lifting block is slidably arranged in the sliding groove.

5. The lifting mechanism of the circular knife holder according to claim 4, characterized in that: A second heat insulation pad is provided between the lifting block and the sliding seat.

6. The lifting mechanism of the circular knife holder according to claim 4, characterized in that: The piston rod of the cylinder is connected to the lifting block through a connecting block.

7. The lifting mechanism of the circular knife holder according to claim 6, characterized in that: A pressure sensor is provided between the connecting block and the pulling block.

8. The lifting mechanism of the circular knife holder according to claim 7, characterized in that: The cylinder is connected with an electric proportional valve.

9. The lifting mechanism of the circular knife holder according to claim 7, characterized in that: An installation cavity for accommodating the pressure sensor is provided in the lifting block. The installation cavity is provided near an opening at one end of the cylinder, and the width of the opening is smaller than the width of the installation cavity. The connecting block includes a connecting boss slidably provided in the installation cavity and a connecting rod connected to the cylinder. The width of the connecting boss is larger than the width of the opening, and the pressure sensor is connected to the connecting boss.

10. The lifting mechanism of the circular knife holder according to claim 9, characterized in that: A transition block is provided between the pressure sensor and the pulling block.

11. The lifting mechanism of the circular knife holder according to claim 10, characterized in that: A positioning hole corresponding to the transition block is recessed in the bottom wall of the installation cavity.

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