Woven bag cold and hot knife switching device

Abstract

The utility model discloses a woven bag cold and hot knife switching device, which relates to the technical field of woven bag cutting equipment, and comprises a cutting table, a support frame arranged at the top of the cutting table, a lifting part arranged at the top of the support frame, a switching frame arranged at the bottom of the lifting part, and two turntables arranged inside the switching frame, the middle parts of the two turntables are rotationally connected with the side part of the conversion frame, the inner top part of the conversion frame is rotationally connected with a telescopic piece, the bottom part of the telescopic piece is rotationally connected with the side part of the turntable, a first knife rest and a second knife rest are arranged between the two turntables and are arranged along the radial direction of the turntables, and the first knife rest is connected with the cold knife; the second knife rest is connected with the hot knife. The cold and hot knife switching device can reduce energy consumption during cold and hot knife switching.

Description

TECHNICAL FIELD

[0001] The utility model relates to weaving bag cutting equipment technical field, concretely relates to a weaving bag cold and hot knife conversion device. BACKGROUND

[0002] In the process of processing woven bags, the woven bags that have not been sewn are cut to meet the size requirements of customers.

[0003] In the field of woven bag cutting, there are two ways of cold cutting and hot cutting. In the cold cutting method, a cold knife is used, which does not need to be heated and is suitable for cutting thin woven bags. In the hot cutting method, a hot knife is used, which not only realizes high-temperature cutting but also realizes sealing, suitable for cutting thick woven bags.

[0004] As known from the above introduction, when cutting different types of woven bags, cutting equipment with corresponding cold knives or hot knives is needed, so manufacturers usually need to have two types of cutting equipment, resulting in increased production costs and site area. Therefore, a cutting equipment that can be used for both purposes has been developed.

[0005] For example, in the patent with the announcement number CN220841678U, a "plastic woven bag cold and hot integrated cutter conversion device" is disclosed. In this patent, the upper part of the rack is provided with a hot knife assembly and an upper drive assembly for driving the hot knife assembly to feed, and the lower part of the rack is provided with a cold knife assembly and a lower drive assembly for driving the cold knife assembly to feed. When cutting woven bags with a hot knife, the overall height of the rack needs to be adjusted; when cutting woven bags with a cold knife, the overall height of the rack needs to be adjusted. By adjusting the overall height of the rack, the woven bag to be cut can be transmitted to the lower part of the cold knife or the hot knife, and the corresponding cutting tool can be used for cutting.

[0006] The above-mentioned patent can meet the use requirements of cold cutting and hot cutting on one machine, which is beneficial to save production costs and save site area. However, in the above-mentioned patent, since the hot knife assembly, the cold knife assembly, the upper drive assembly and the lower drive assembly are arranged on the rack, the rack bears the weight of all structures, so when the cold knife or the hot knife is converted by adjusting the overall height of the rack, the energy consumption is increased.

[0007] Therefore, how to reduce the energy consumption when converting the cold and hot knives is a technical problem that needs to be solved at present. UTILITY MODEL CONTENTS

[0008] The utility model discloses a woven bag cold and hot knife conversion device, which can reduce the energy consumption when converting the cold and hot knives.

[0009] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0010] The utility model provides a woven bag cold and hot knife conversion device, including cutting platform, the top of cutting platform is equipped with support frame, the top of support frame is equipped with elevating piece, the bottom of elevating piece is equipped with conversion frame, the inside of conversion frame is equipped with two rotating discs, the middle part of two rotating discs all is rotatably connected with the side of conversion frame, the inner top of conversion frame is rotatably connected with telescopic piece, the bottom of telescopic piece is rotatably connected with the side of rotating disc, be equipped with first knife rest and second knife rest between two rotating discs, first knife rest and second knife rest all are along the radial direction of rotating disc and set up, first knife rest is connected with cold knife, second knife rest is connected with hot knife.

[0011] Further, the included angle between the first knife rest and the second knife rest is 90°.

[0012] Further, the first knife rest and the cold knife are detachably connected, and the second knife rest and the hot knife are detachably connected.

[0013] Further, the elevating piece can be an oil cylinder or an air cylinder.

[0014] Further, the telescopic piece can be an oil cylinder, an air cylinder, or an electric push rod.

[0015] Further, the middle part of each of the two rotating discs is rotatably connected to the side of the conversion frame through a rotating shaft, and each of the two rotating discs is provided with a first radial slot and a second radial slot, the bottom of the first radial slot is provided with a first radial hole, and the bottom of the second radial slot is provided with a second radial hole.

[0016] The side of the conversion frame is provided with a first inclined slot and a second inclined slot, the lower end of the first inclined slot is communicated with the lower end of the second inclined slot, the distance between the lower end of the first inclined slot and the rotating shaft is greater than the distance between the upper end of the first inclined slot and the rotating shaft, the distance between the lower end of the second inclined slot and the rotating shaft is greater than the distance between the upper end of the second inclined slot and the rotating shaft, the conversion frame is further provided with a protective plate, and the upper end of the first inclined slot and the upper end of the second inclined slot are higher than the bottom of the protective plate.

[0017] The first knife rest is in radial sliding fit with the first radial slot, the first knife rest is provided with a first sliding pin, and the first sliding pin is in sliding fit with the first radial hole and the first inclined slot in sequence.

[0018] The second knife rest is in radial sliding fit with the second radial slot, the second knife rest is provided with a second sliding pin, and the second sliding pin is in sliding fit with the second radial hole and the second inclined slot in sequence.

[0019] The utility model has the beneficial effects that:

[0020] 1. In the background art, the conversion of the cold knife and the hot knife is achieved by adjusting the overall height of the rack, and the rack bears the weight of the hot knife assembly, the cold knife assembly, the upper driving assembly, and the lower driving assembly, thereby increasing the energy consumption during the conversion of the cold knife and the hot knife.

[0021] In the utility model, when the cold knife and the hot knife are converted, the length of the telescopic part is adjusted to drive the rotating disc to rotate, the rotating disc drives the first knife holder, the second knife holder, the cold knife and the hot knife to rotate together, when the cold knife rotates to the vertical state, the cold knife can carry out cutting operation, when the hot knife rotates to the vertical state, the hot knife can carry out cutting operation, so that the rotating disc only bears the weight of the first knife holder, the second knife holder, the cold knife and the hot knife.

[0022] Compared with the background art, the total weight of the first knife holder, the second knife holder, the cold knife and the hot knife is lighter than the total weight of the hot knife assembly, the cold knife assembly, the upper driving assembly and the lower driving assembly, and the utility model can reduce the energy consumption when the cold knife and the hot knife are converted.

[0023] 2, the first knife holder and the cold knife can be disassembled, the second knife holder and the hot knife can be disassembled, so when the cold knife or the hot knife is damaged, it can be replaced, and maintenance is convenient.

[0024] 3, by setting first radial groove, second radial groove, first radial hole, second radial hole, first inclined groove, second inclined groove, first sliding pin, second sliding pin and guard plate, the distance between the cold knife and the hot knife and the rotating shaft can be converted when the cold knife and the hot knife positions are converted, so that the unused cold knife or hot knife is sent into the protection range of the guard plate, to prevent the unused cold knife or hot knife from scratching the workers, and the use safety is improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a kind of woven bag cold hot knife conversion device after cutting table, support frame, lifting part, it is a three-dimensional Figure 1 ;

[0026] Figure 2 is a kind of woven bag cold hot knife conversion device after cutting table, support frame, lifting part, it is a three-dimensional Figure 2 ;

[0027] Figure 3 is a kind of woven bag cold hot knife conversion device after cutting table, support frame, lifting part, guard plate, it is a three-dimensional Figure 1 ;

[0028] Figure 4 is a kind of woven bag cold hot knife conversion device after cutting table, support frame, lifting part, guard plate, it is a three-dimensional Figure 2 ;

[0029] Figure 5 is a kind of woven bag cold hot knife conversion device after cutting table, support frame, lifting part, guard plate, it is a front view;

[0030] Figure 6 is Figure 5 sectional view of A-A in

[0031] Figure 7 is Figure 5 is a sectional view at B-B in FIG.

[0032] Figure 8 is Figure 5 is a sectional view at C-C in FIG.

[0033] Figure 9 is a perspective view of a woven bag cold-hot knife conversion device;

[0034] Figure 10 is a front view of a woven bag cold-hot knife conversion device.

[0035] BRIEF DESCRIPTION OF DRAWINGS

[0036] 1 - conversion frame, 11 - first inclined groove, 12 - second inclined groove, 13 - guard plate,

[0037] 2 - rotating disc, 21 - rotating shaft, 22 - first baffle, 23 - second baffle, 24 - first radial hole, 25 - second radial hole,

[0038] 3 - telescopic piece,

[0039] 4 - first knife holder, 41 - first knife groove, 42 - first bolt, 43 - first sliding pin,

[0040] 5 - second knife holder, 51 - second knife groove, 52 - second bolt, 53 - second sliding pin,

[0041] 6 - cold knife,

[0042] 7 - hot knife,

[0043] 8 - lifting piece,

[0044] 9 - support frame,

[0045] 10 - cutting table. DETAILED DESCRIPTION

[0046] In order to better understand the present application, the present application will be further described below in conjunction with the drawings. It should be noted that in the description of the present application, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0047] Example 1:

[0048] Referring to Figures 1 to 10The application discloses a woven bag cold-hot knife conversion device which comprises a conversion frame 1, rotating discs 2, telescopic members 3, first knife frames 4, second knife frames 5, a cold knife 6, a hot knife 7, lifting members 8, support frames 9 and cutting tables 10.

[0049] Referring to Figure 9 and Figure 10 , the top of the cutting table 10 is welded with the support frame 9, the lifting member 8 can be an oil cylinder or an air cylinder, the top of the lifting member 8 is fixedly installed on the top of the support frame 9, and the bottom of the lifting member 8 is fixedly installed with the conversion frame 1.

[0050] Referring to Figure 5 , the rotating disc 2 is provided with two rotating discs 2, and the two rotating discs 2 are arranged in the inside of the conversion frame 1. Figure 3 Referring to , the middle portions of the two rotating discs 2 are rotationally connected with rotating shafts 21 through bearings, and the rotating shafts 21 are welded with the side portions of the conversion frame 1.

[0051] Figures 1 to 5 Referring to , the first knife frame 4 and the second knife frame 5 are arranged between the two rotating discs 2, and the first knife frame 4 and the second knife frame 5 are arranged along the radial direction of the rotating disc 2. In the embodiment, the included angle between the first knife frame 4 and the second knife frame 5 is 90 degrees.

[0052] Figures 3 to 5 Referring to , the telescopic member 3 is an oil cylinder, an air cylinder or an electric push rod. The upper end of the telescopic member 3 is rotationally connected with the inner top of the conversion frame 1, and the bottom of the telescopic member 3 is rotationally connected with the side portion of the rotating disc 2.

[0053] Figure 4 Referring to , the cold knife 6 is installed on the first knife frame 4, and the hot knife 7 is installed on the second knife frame 5. The cold knife 6 is relative to the hot knife 7, and the cold knife 6 refers to a normal-temperature cutter. The hot knife 7 can be an electric hot knife, and the electric hot knife refers to a cutter which utilizes electric energy to heat and cut. The electric hot knife usually has two structural forms. The first structural form is that an electric heating wire is installed in the cutter, and the electric heating wire generates heat after being electrified, and the heat is transmitted to the cutter to heat the cutter. The second structural form is that an electric power source is directly connected to the cutter through a wire to directly heat the cutter to form the electric hot knife.

[0054] The working principle of the embodiment is as follows:

[0055] Figure 6 When the hot knife 7 is used to cut the woven bag, referring to , the telescopic member 3 is in an elongated state, the second knife frame 5 and the hot knife 7 on the second knife frame 5 are in a vertical state, the first knife frame 4 and the cold knife 6 on the first knife frame 4 are in a horizontal state, and the hot knife 7 can be used for cutting at this moment. In the process of cutting the woven bag by using the hot knife 7, the woven bag is first sent to the lower side of the hot knife 7, then the lifting member 8 drives the hot knife 7 to move downwards, the hot knife 7 moves downwards to cut the woven bag, and the woven bag is cut off.

[0056] When the woven bag is cut by the cold knife 6, the telescopic member 3 is shortened, the rotating disc 2 is rotated counterclockwise by 90°, the first knife holder 4 and the cold knife 6 on the first knife holder 4 are rotated to the vertical state, and the second knife holder 5 and the hot knife 7 on the second knife holder 5 are rotated to the horizontal state, so that the cold knife 6 can be used for cutting. During the cutting of the woven bag by the cold knife 6, the woven bag is first sent below the cold knife 6, and then the lifting member 8 drives the cold knife 6 to move downward, so that the cold knife 6 moves downward to cut the woven bag and cut the woven bag.

[0057] From the above introduction, it can be known that the embodiment 1 has the following effects:

[0058] In the background art, the conversion of the cold knife and the hot knife is realized by adjusting the overall height of the rack, and the rack is loaded with the weight of the hot knife assembly, the cold knife assembly, the upper driving assembly and the lower driving assembly, so that the energy consumption during the conversion of the cold knife and the hot knife is increased.

[0059] In the embodiment 1, when the cold knife 6 and the hot knife 7 are converted, the length of the telescopic member 3 is adjusted to drive the rotating disc 2 to rotate, the rotating disc 2 drives the first knife holder 4, the second knife holder 5, the cold knife 6 and the hot knife 7 to rotate together, the cold knife 6 can be used for cutting when the cold knife 6 is rotated to the vertical state, and the hot knife 7 can be used for cutting when the hot knife 7 is rotated to the vertical state, so that the rotating disc 2 is only loaded with the weight of the first knife holder 4, the second knife holder 5, the cold knife 6 and the hot knife 7.

[0060] The total weight of the first knife holder 4, the second knife holder 5, the cold knife 6 and the hot knife 7 is lighter than the total weight of the hot knife assembly, the cold knife assembly, the upper driving assembly and the lower driving assembly in the background art, and the energy consumption during the conversion of the cold knife and the hot knife can be reduced by the embodiment 1.

[0061] Embodiment 2:

[0062] The embodiment 2 is further improved on the basis of the embodiment 1:

[0063] Referring to Figures 3 to 6 In the embodiment 2, the first knife holder 4 is provided with a first knife groove 41, and the back end of the cold knife 6 is inserted and matched with the first knife groove 41. The first knife holder 4 is threadedly connected with a first bolt 42, when the one end of the first bolt 42 inserted into the first knife groove 41 abuts against the side of the cold knife 6, the cold knife 6 is clamped by the one end of the first bolt 42 inserted into the first knife groove 41 and the groove wall of the first knife groove 41, so that the cold knife 6 is assembled with the first knife holder 4; when the first bolt 42 is screwed outward to exit the first knife groove 41, the cold knife 6 can exit the first knife groove 41, and the cold knife 6 and the first knife holder 4 can be disassembled.

[0064] Referring to Figures 3 to 6The second knife groove 51 is provided on the second knife holder 5, and the back end of the hot knife 7 is inserted and matched with the second knife groove 51. The second bolt 52 is threadedly connected to the second knife holder 5. When the second bolt 52 is inserted into one end of the second knife groove 51 and abuts against the side of the hot knife 7, the hot knife 7 is clamped by the one end of the second knife groove 51 and the groove wall of the second knife groove 51, so that the hot knife 7 is assembled with the second knife holder 5. When the second bolt 52 is screwed outward and withdrawn from the second knife groove 51, the hot knife 7 can be withdrawn from the second knife groove 51, and the hot knife 7 and the second knife holder 5 can be disassembled.

[0065] As can be known from the above introduction, in the second embodiment, the first knife holder 4 and the cold knife 6 can be disassembled, and the second knife holder 5 and the hot knife 7 can be disassembled. Therefore, when the cold knife 6 or the hot knife 7 is damaged, it can be replaced, and maintenance is facilitated.

[0066] Embodiment 3

[0067] The third embodiment is further improved on the basis of the first embodiment or the second embodiment.

[0068] Referring to Figures 6 to 7 Two first baffles 22 and two second baffles 23 are welded and fixed to each rotating disc 2. The two first baffles 22 are spaced apart to form a first radial groove, and the two second baffles 23 are spaced apart to form a second radial groove. The bottom of the first radial groove is provided with a first radial hole 24, and the bottom of the second radial groove is provided with a second radial hole 25.

[0069] Referring to Figure 8 The left side and the right side of the conversion frame 1 are each provided with a first inclined groove 11 and a second inclined groove 12. The lower end of the first inclined groove 11 is in communication with the lower end of the second inclined groove 12. The distance between the lower end of the first inclined groove 11 and the rotating shaft 21 is greater than the distance between the upper end of the first inclined groove 11 and the rotating shaft 21, and the distance between the lower end of the second inclined groove 12 and the rotating shaft 21 is greater than the distance between the upper end of the second inclined groove 12 and the rotating shaft 21.

[0070] Referring to Figure 1 and Figure 2 The front side and the rear side of the conversion frame 1 are each provided with a protective plate 13 through screws. The upper end of the first inclined groove 11 and the upper end of the second inclined groove 12 are higher than the bottom of the protective plate 13.

[0071] Referring to Figures 6 to 8 The first knife holder 4 is slidably matched with the first radial groove in the radial direction. The first knife holder 4 is welded and fixed with a first sliding pin 43, and the first sliding pin 43 is slidably matched with the first radial hole 24 and the first inclined groove 11 in sequence.

[0072] Referring to Figures 6 to 8The second knife holder 5 is in radial sliding fit with the second radial slot, and the second sliding pin 53 is welded and fixed on the second knife holder 5 and sequentially in sliding fit with the second radial hole 25 and the second inclined slot 12.

[0073] The principles of the conversion of the hot knife 7 and the cold knife 6 in this embodiment 3 are as follows:

[0074] The initial state of this embodiment 3 is that the telescopic part 3 is in the elongated state, the second knife holder 5 and the hot knife 7 on the second knife holder 5 are in the vertical state, the second knife holder 5 and the hot knife 7 are away from the rotation shaft 21, the second sliding pin 53 on the second knife holder 5 is located at the end of the second radial hole 25 away from the rotation shaft 21, and the second sliding pin 53 is also located at the communication position of the second inclined slot 12 and the first inclined slot 11. The hot knife 7 away from the rotation shaft 21 and in the vertical state can be used for cutting work of the woven bag. In addition, the first knife holder 4 and the cold knife 6 on the first knife holder 4 are in the horizontal state, the first knife holder 4 and the cold knife 6 are close to the rotation shaft 21, the first sliding pin 43 on the first knife holder 4 is located at the end of the first radial hole 24 close to the rotation shaft 21, and the first sliding pin 43 is also located at the upper end of the first inclined slot 11. The cold knife 6 close to the rotation shaft 21 and in the horizontal state is located in the shielding range of the protective plate 13, which can prevent the cold knife 6 from scratching the workers.

[0075] When the positions of the cold knife 6 and the hot knife 7 are converted, the telescopic part 3 is gradually shortened, the telescopic part 3 pulls the rotating disc 2 to rotate counterclockwise with the rotation shaft 21 as the rotation center, and the rotating disc 2 drives the first knife holder 4 and the second knife holder 5 to rotate together. The first knife holder 4 and the cold knife 6 on the first knife holder 4 are gradually converted from the horizontal state to the vertical state, the first sliding pin 43 on the first knife holder 4 is guided by the first inclined slot 11 to move away from the rotation shaft 21, so that the first knife holder 4 and the cold knife 6 are converted from the state close to the rotation shaft 21 to the state away from the rotation shaft 21. The cold knife 6 away from the rotation shaft 21 and in the vertical state can be used for cutting work of the woven bag; at the same time, the second knife holder 5 and the hot knife 7 on the second knife holder 5 are gradually converted from the vertical state to the horizontal state, the second sliding pin 53 on the second knife holder 5 is guided by the second inclined slot 12 to move close to the rotation shaft 21, so that the second knife holder 5 and the hot knife 7 are converted from the state away from the rotation shaft 21 to the state close to the rotation shaft 21. The hot knife 7 close to the rotation shaft 21 and in the horizontal state enters the shielding range of the protective plate 13, which can prevent the hot knife 7 from scratching the workers.

[0076] Through the conversion process of the cold knife 6 and the hot knife 7, it can be known that by arranging the first radial groove, the second radial groove, the first radial hole 24, the second radial hole 25, the first inclined groove 11, the second inclined groove 12, the first sliding pin 43, the second sliding pin 53 and the protective plate 13, the distance between the cold knife 6 and the hot knife 7 and the rotating shaft 21 can be converted while the positions of the cold knife 6 and the hot knife 7 are converted, so that the cold knife 6 or the hot knife 7 which is not used can be sent into the protection range of the protective plate 13, the cold knife 6 or the hot knife 7 which is not used can be prevented from scratching the workers, and the use safety can be improved.

[0077] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and the equivalent technologies thereof, the present application also intends to include these modifications and variations.

Claims

1. A woven bag cold-hot knife switching device comprising a cutting table, a cold knife and a hot knife, characterized in that, The top of the cutting table is provided with a support frame, the top of the support frame is provided with a lifting piece, the bottom of the lifting piece is provided with a conversion frame, the inside of the conversion frame is provided with two rotating discs, the middle part of each of the two rotating discs is rotationally connected with the side of the conversion frame, the inner top of the conversion frame is rotationally connected with an extension piece, the bottom of the extension piece is rotationally connected with the side of the rotating disc, a first tool holder and a second tool holder are arranged between the two rotating discs, the first tool holder and the second tool holder are arranged along the radial direction of the rotating disc, the cold knife is connected with the first tool holder, and the hot knife is connected with the second tool holder.

2. A woven bag cold-hot knife switching device according to claim 1, characterized in that, The included angle between the first tool holder and the second tool holder is 90°.

3. A woven bag cold-hot knife changeover device according to claim 2, characterised in that, The first tool holder and the cold knife are detachably connected, and the second tool holder and the hot knife are detachably connected.

4. A woven bag cold-hot knife switching device according to claim 1, characterized in that, The lifting piece can be an oil cylinder or an air cylinder.

5. A woven bag cold-hot knife switching device according to claim 1, characterized in that, The extension piece can be an oil cylinder, an air cylinder or an electric push rod.

6. A woven bag cold-hot knife changeover device according to any one of claims 1 to 5, characterised in that, The middle part of each of the two rotating discs is rotationally connected with the side of the conversion frame through a rotating shaft, and each of the two rotating discs is provided with a first radial groove and a second radial groove, the groove bottom of the first radial groove is provided with a first radial hole, and the groove bottom of the second radial groove is provided with a second radial hole. The side of the conversion frame is provided with a first inclined groove and a second inclined groove, the lower end of the first inclined groove is communicated with the lower end of the second inclined groove, the distance between the lower end of the first inclined groove and the rotating shaft is greater than the distance between the upper end of the first inclined groove and the rotating shaft, the distance between the lower end of the second inclined groove and the rotating shaft is greater than the distance between the upper end of the second inclined groove and the rotating shaft, and the conversion frame is further provided with a protective plate, the upper end of the first inclined groove and the upper end of the second inclined groove are higher than the bottom of the protective plate. The first tool holder is in sliding fit with the first radial groove in the radial direction, the first tool holder is provided with a first sliding pin, and the first sliding pin is in sliding fit with the first radial hole and the first inclined groove in sequence. The second tool holder is in sliding fit with the second radial groove in the radial direction, the second tool holder is provided with a second sliding pin, and the second sliding pin is in sliding fit with the second radial hole and the second inclined groove in sequence.

Images