Cutting device, assembling machine and cutting method

Abstract

The invention relates to a cutting device, an assembling machine and a cutting method, the cutting device, the assembling machine and the cutting method are used for cutting strapping tapes of sheets, the assembling machine comprises the cutting device, the cutting device comprises a base, and the base further comprises a first guide rail extending in the first direction; the base is further provided with a retaining mechanism, and the retaining mechanism comprises a supporting plate and / or a clamping piece. The cutting mechanism comprises a cutting part, the cutting part comprises a cutting blade, the cutting blade is used for cutting off the strapping tape, and the cutting part is connected to the first guide rail in a sliding mode and located on the first side of the maintaining mechanism; the recycling mechanism is arranged on the base and comprises a recycling part, and the recycling part can move in the first direction and is located on the second side of the maintaining mechanism; therefore, the working efficiency of heat exchanger assembly is improved, the strapping tape is automatically recovered, and normal assembly of an assembly machine is not affected.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchangers, and in particular to a cutting device, an assembly machine and a cutting method. Background Art

[0002] In the field of heat exchangers, heat exchanger core assembly has always been a very important step. The existing heat exchanger core assembly needs to be completed by manpower, including manually removing the strapping tape on the surface of the bundled flat tube group, and placing the unpacked flat tubes on the assembly machine for automatic assembly with the collector and fins. The efficiency is relatively low, and the removed strapping tape may remain on the flat tube group, causing the assembly machine to jam. Summary of the invention

[0003] In order to solve the above technical problems, the present application provides a cutting device for cutting the strapping band of a sheet material, comprising: A base, wherein the base further comprises a first guide rail extending along a first direction; the base is further provided with a holding mechanism, wherein the holding mechanism comprises a support plate and / or a clamping member; A cutting mechanism, the cutting mechanism comprising a cutting portion, the cutting portion comprising a cutting blade, the cutting blade being used to cut the strapping band, the cutting portion being slidably connected to the first guide rail and being located on a first side of the holding mechanism; The recovery mechanism is arranged on the base and comprises a recovery part, which can move along the first direction and is located on the second side of the holding mechanism.

[0004] Optionally, the first side is an upper side of the retaining mechanism, and the second side is a lower side of the retaining structure.

[0005] Optionally, the cutting mechanism includes an auxiliary part, which moves synchronously with the cutting part in a first direction and can move along a second direction to approach or move away from a holding mechanism. The auxiliary part includes a vacuum part and an adsorption part. The adsorption part is arranged on a side of the vacuum part close to the holding mechanism, and the vacuum part is connected to a first vacuum generator.

[0006] Optionally, the cutting mechanism includes an auxiliary part, which is a hook capable of moving along the second direction, the bottom of the hook has a flat surface, and the upper part of the hook has an inclined surface.

[0007] Optionally, the cutting mechanism further includes a first driving member, the first driving member is slidably connected to the first guide rail, and the first driving member can drive the cutting part and / or the auxiliary part to move along the second direction.

[0008] Optionally, the cutting part includes a second driving member, which drives the cutting blade to move in a first direction; the second driving member includes at least two transmission wheels, at least two of the transmission wheels are provided with transmission belts, and the cutting blade is detachably connected to the transmission belt.

[0009] Optionally, the cutting mechanism further comprises a protective cover, which is arranged at the lower part of the cutting mechanism, and the protective cover is provided with notches at both ends along the third direction.

[0010] Optionally, the clamping member of the holding mechanism is connected to a third driving member, and the holding mechanism is provided with two groups, which are respectively provided at two ends of the base along the first direction.

[0011] Optionally, the device comprises a second vacuum generator, the recovery part is connected to the vacuum generator, and the recovery part can generate negative pressure.

[0012] The bundled flat tube group is clamped by a holding mechanism, and then the bundling tape on the flat tube group is cut off from one side by a cutting mechanism, and the bundling tape is recovered from the other side by a recovery mechanism to complete the automatic unpacking of the flat tube group, thereby improving the work efficiency of heat exchanger assembly, and automatically recovering the bundling tape will not affect the normal assembly of the assembly machine.

[0013] The present application also provides an assembly machine for assembling a heat exchanger core, comprising a cutting device, the cutting device comprising a base, the base further comprising a first guide rail extending along a first direction; the base is also provided with a holding mechanism, the holding mechanism comprising a support plate and / or a clamping member; the cutting mechanism also comprises a cutting mechanism, the cutting mechanism comprises a cutting part, the cutting part comprises a cutting blade, the cutting part is slidably connected to the first guide rail and is located on a first side of the holding mechanism; the cutting device also comprises a recovery mechanism, the recovery mechanism is provided on the base, comprises a recovery part, the recovery part can move along a first direction and is located on a second side of the holding mechanism; the recovery part can generate negative pressure; the cutting device is used to cut and recover the strapping on the workpiece.

[0014] A cutting device for automatically cutting the strapping tape is provided, thereby improving the efficiency of the assembly machine in assembling the heat exchanger core.

[0015] The present application also provides a cutting method for cutting a flat tube strapping tape of an assembly machine, comprising the following steps: A holding mechanism clamps the bundled sheets; The cutting mechanism moves along a first direction to the position of the strapping tape; The cutting portion moves from the first side of the holding mechanism along the second direction and approaches the strapping band; The cutting blade cuts off the strapping tape; The collecting unit moves from the second side of the holding mechanism to the position of the binding band and collects the cut binding band.

[0016] Optionally, the method further includes: the cutting part approaches the strapping belt from the upper side of the sheet downward, and the recovering part approaches the strapping belt from the lower side of the sheet and recovers the strapping belt, and the recovering part and the cutting part keep moving synchronously in the first direction.

[0017] Optionally, the cutting part is provided with an auxiliary part, the auxiliary part includes a vacuum part and an adsorption part, the vacuum part generates negative pressure, the adsorption part sucks up the strapping belt along the second direction, at least part of the strapping belt is distanced from the surface of the sheet, the cutting blade moves along the first direction to cut off the strapping belt, and the adsorption part stops adsorption.

[0018] Optionally, the method further includes: a positioning mechanism identifying the position of the strapping belt, wherein the positioning mechanism is a visual camera mechanism.

[0019] Optionally, the cutting mechanism is retracted to an initial position, and during the retraction process, it is detected whether there is any remaining strapping tape.

[0020] The present application clamps the bundled flat tube group through a holding mechanism, then cuts off the bundling tape on the flat tube group from one side through a cutting mechanism, and recycles the bundling tape from the other side through a recycling mechanism, thereby completing the automatic unpacking of the flat tube group, thereby improving the work efficiency of heat exchanger assembly, and automatically recycling the bundling tape will not affect the normal assembly of the assembly machine.

[0021] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional diagram of Example 1 of the present application; Figure 2 is a schematic diagram of the cutting mechanism; Figure 3 is a schematic diagram of the protective cover; Reference numerals: 1-base; 11-first guide rail; 2-holding mechanism; 21- support plate; 22- clamping member; 3-cutting part; 31-cutting blade; 32-transmission wheel; 33-transmission belt; 34-first driving member; 4-Recycling Department; 5- auxiliary part; 51- vacuum part; 52- adsorption part; 6-protective cover; 61- notch; 7- Positioning mechanism; 8-flat tube group; 81- strapping belt; The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0023] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0024] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0025] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0026] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0027] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0028] The sheet material in the present application is a sheet material including a flat tube of a heat exchanger, which is elongated and has a thickness smaller than its own length and width. Embodiment 1

[0029] like Figure 1-Figure 3 As shown, a cutting device is used for cutting the strapping band of a sheet material, comprising A base 1, the base 1 further comprising a first guide rail 11 extending along a first direction; the base 1 is further provided with a holding mechanism 2, the holding mechanism 2 comprising a support plate 21 and / or a clamping member 22; A cutting mechanism, the cutting mechanism includes a cutting portion 3, the cutting portion 3 includes a cutting blade 31, the cutting blade 31 is used to cut the strapping tape, the cutting portion 3 is slidably connected to the first guide rail 11, and is located on the first side of the holding mechanism 2; a recycling mechanism, the recycling mechanism is arranged on the base 1, includes a recycling portion 4, the recycling portion 4 can move along the first direction, and is located on the second side of the holding mechanism 2; in this embodiment, the sheet workpiece is a bundled flat tube group, and the strapping tape is a light-weight paper tape or plastic tape, etc. In this embodiment, the first direction is the length direction of the base 1, which is parallel to the length direction of the flat tube group. The first base 1 is provided with a first guide rail 11, and the holding mechanism 2 is arranged on both sides of the base 1 for clamping the flat tube group from both ends. The flat tube group is placed on the support plate 21, and the clamping member 22 clamps the flat tube group front and back from both ends; in other embodiments, the holding mechanism 2 can be provided with a plurality of clamping members 22 below the flat tube group, and a plurality of clamping members 22 can be provided along the front and back directions of the flat tube group Clamping; after the holding mechanism 2 clamps the flat tube group, the cutting mechanism is arranged on the upper side of the flat tube group and the holding mechanism 2, and the cutting part 3 can slide along the first guide rail 11. During the sliding process, the cutting blade 31 cuts off the strapping tape on the flat tube group, and the strapping tape is in a relaxed state. The recovery part 4 is arranged on the lower side of the holding mechanism 2 and the flat tube group, and the strapping tape in a relaxed state is recovered by negative pressure. In this embodiment, the recovery part 4 and the cutting part 3 maintain synchronous displacement in the first direction, that is, after the cutting part 3 cuts off the strapping tape, the recovery part 4 is just below the strapping tape; in other embodiments, the cutting part 3 and the recovery part 4 may not move at the same time, but may arrive one after another; in other embodiments, the cutting structure may be arranged at other positions of the flat group, such as in the front-to-back direction or below; the recovery part 4 may also be arranged at other positions; in this embodiment, the cutting mechanism and the recovery mechanism may be driven by one driving member, or may be driven separately by multiple driving members.

[0030] The first side is the upper side of the holding mechanism 2, and the second side is the lower side of the holding structure; after the strapping belt is cut, it will be in a loose state and is likely to fall off the flat tube group. The recovery part 4 is arranged at the bottom, and the strapping belt can be recovered in time, thereby realizing efficient automatic recovery of the strapping belt.

[0031] The cutting mechanism includes an auxiliary part 5. The auxiliary part 5 moves synchronously with the cutting part 3 in the first direction and can move in the second direction to approach or move away from the holding mechanism 2. The auxiliary part 5 includes a vacuum part 51 and an adsorption part 52. The adsorption part 52 is arranged on the side of the vacuum part 51 close to the holding mechanism 2. The vacuum part 51 is connected to the first vacuum generator. In this embodiment, the auxiliary part 5 is integrated with the cutting part 3, can slide along the first guide rail 11, and the second driving part can drive the auxiliary part 5 in the second direction, that is, the up and down direction, to approach the binding tape. The vacuum part 51 is generally in a "冂" shape and straddles both sides of the cutting part 3 in the third direction perpendicular to the first direction, that is, the front and back direction. There are two docking holes provided at the top of the vacuum part 51, and the docking holes are connected to the vacuum generator. The lower part of the vacuum part 51 is provided with an adsorption part 52. The adsorption part 52 includes two suction cups, which are respectively arranged at the lower parts of the two end feet at the lower part of the vacuum part 51. When the vacuum part 51 generates negative pressure, the binding tape can be sucked up from the surface of the flat tube group, so that the horizontal height of a part of the binding tape is higher than the horizontal height of the lower part of the cutting blade 31. By providing the auxiliary part 5, when the binding tape is cut, the cut part can be separated from the flat tube surface by a certain distance, thus avoiding the flat tube being scratched by the cutting blade 31 when cutting the binding tape.

[0032] The cutting mechanism further includes a first driving part 34. The first driving part 34 is slidably connected to the first guide rail 11, and the first driving part 34 can drive the cutting part 3 and / or the auxiliary part 5 to move in the second direction. In this embodiment, a first slider is slidably connected to the first guide rail 11. The first driving part 34 is an electric push rod or a cylinder and is fixedly connected to the first slider. The lower part of the first driving part 34 is fixedly connected to the cutting part 3 and the auxiliary part 5. When reaching the position of the binding tape, the first driving part drives the cutting part 3 and the auxiliary part 5 to move downward to approach the binding tape. When the binding tape reaches the working range of the adsorption part 52, the auxiliary part 5 sucks up the binding tape. Further, the first driving part 34 can move upward by a certain distance, the cutting part 3 cuts off the binding tape, and the adsorption part 52 stops adsorbing. The paper tape is in a slack state waiting to fall off. When approaching the binding tape, it approaches automatically and efficiently.

[0033] The cutting part 3 includes a second driving member, which drives the cutting blade 31 to move in the first direction; the second driving member includes at least two transmission wheels 32, at least two transmission wheels 32 are provided with transmission belts 33, and the cutting blade 31 is detachably connected to the transmission belt 33; in the present embodiment, when the adsorption part 52 sucks up the strapping tape, the horizontal height of part of the strapping tape is higher than the lower part of the cutting blade 31, the second driving member includes a driving motor, and two transmission wheels 32, the transmission wheels 32 are provided with transmission belts 33, the movement direction of the transmission belt 33 is perpendicular to the extension direction of the strapping tape and the vacuum part 51, the cutting blade 31 is fixed on the transmission belt 33, the blade is downward or obliquely downward, the cutting blade 31 passes through the strapping tape under the action of the transmission belt 33, and the strapping tape is cut; in other embodiments, the blade can be a rotating blade; a second driving member is provided, which can independently perform the task of cutting the strapping tape, and the cutting speed can be adjusted to achieve flexible adjustment.

[0034] The cutting mechanism further comprises a protective cover 6, which is arranged at the lower part of the cutting mechanism, and has slots 61 at both ends of the protective cover 6 along the third direction; in this embodiment, the protective cover 6 is used to control the distance between the cutting part 3, the auxiliary part 5 and the flat tube group in the second direction, and the protective cover 6 surrounds the cutting part 3 and the auxiliary part 5 on all sides and the top, and when the first driving member 34 drives the protective cover 6, the cutting part 3, and the auxiliary part 5 to gradually approach the flat tube group, the lower part of the protective cover 6 contacts the surface of the flat tube group, the first driving member 34 stops moving, the strapping belt is located in the slot 61, and the auxiliary part 5 sucks the strapping belt Furthermore, the first driving member 34 moves upward a certain distance, and the cutting part 3 performs the cutting task; by setting the protective cover 6, the cutting action can be protected to be performed safely without accidentally injuring the staff. At the same time, the protective cover 6 has the function of controlling the distance, preventing the cutting part 3 and the auxiliary part 5 from being too close or too far from the flat tube group, thereby improving the cutting efficiency. The notch 61 is used to avoid the strapping belt, so that the strapping belt can be easily sucked up; in other embodiments, after the auxiliary part 5 sucks up the strapping belt and the distance from the flat tube group is sufficient, the first driving member 34 may no longer move upward.

[0035] The clamping member 22 of the holding mechanism 2 is connected to the third driving member. The holding mechanism 2 is provided with two groups, which are respectively arranged at the two ends of the base 1 along the first direction. In this embodiment, the support plate 21 is arranged at the two ends of the base 1 and avoids the position of the strapping belt. The clamping member 22 is also arranged at the two ends of the flat tube group. Therefore, after the flat tube group is clamped, there is no obstruction on the strapping belt in the middle part, up and down, front and back, and the movement of the cutting mechanism and the recovery mechanism will not be affected in any way, and the strapping belt can be easily cut and recovered.

[0036] It includes a second vacuum generator, the recovery mechanism is connected to the vacuum generator, and the recovery part 4 can generate negative pressure; through the negative pressure recovery method, there is no need to contact the flat tube, which can avoid scratching the flat tube when collecting the strapping tape, and has a higher recovery efficiency; in other embodiments, other methods of recovering the strapping tape can be used.

[0037] In this embodiment, a positioning mechanism 7 is also included. The positioning mechanism is located on the auxiliary part 5 and is a specific position visual recognition mechanism for determining the position of the strapping belt. Embodiment 2

[0038] The difference from Example 1 is that the cutting mechanism includes an auxiliary part 5, which is a hook that can move along the second direction, the bottom of the hook has a flat surface, and the upper part of the hook has an inclined surface; in this embodiment, the strapping tape is no longer cut by vacuum adsorption, but by a hook. When the cutting mechanism moves along the first guide rail 11, the hook will intervene between the strapping tape and the flat tube, and support the strapping tape through the inclined surface. Further, the first drive room moves upward, and the hook moves upward to tear the strapping tape apart; the paper tape cutting process of this embodiment is relatively simple, which is conducive to reducing costs and improving efficiency. Embodiment 3

[0039] An assembly machine for assembling a heat exchanger core, comprising a cutting device, the cutting device comprising a base 1, the base 1 further comprising a first guide rail 11 extending along a first direction; the base 1 is further provided with a holding mechanism 2, the holding mechanism 2 comprising a support plate 21 and / or a clamping member 22; the cutting mechanism further comprises a cutting mechanism, the cutting mechanism comprising a cutting portion 3, the cutting portion 3 comprising a cutting blade 31, the cutting portion 3 being slidably connected to the first guide rail 11 and being located on a first side of the holding mechanism 2; the cutting device further comprises a recycling mechanism, the recycling mechanism being arranged on the base 1, comprising a recycling portion 4, the recycling portion 4 being able to extend along the first direction The assembling machine is provided with a mechanism for automatically cutting the strapping tape, thereby greatly improving the production efficiency. In this embodiment, the sheet workpiece is a bundled flat tube group, and the strapping tape is a light-weight paper tape or plastic tape, etc. In this embodiment, the first direction is the length direction of the base 1, which is parallel to the length direction of the flat tube group. The first base 1 is provided with a first guide rail 11. The holding mechanism 2 is provided on both sides of the base 1, and is used to clamp the flat tube group from both ends. The flat tube group is placed On the support plate 21, the clamping members 22 clamp the flat tube group front and back from both ends; in other embodiments, the holding mechanism 2 can be provided with a plurality of clamping members 22 below the flat tube group, and a plurality of clamping members 22 can be provided to clamp the flat tube group in the front and rear direction; after the holding mechanism 2 clamps the flat tube group, the cutting mechanism is provided on the upper side of the flat tube group and the holding mechanism 2, and the cutting part 3 can slide along the first guide rail 11. During the sliding process, the cutting blade 31 cuts off the strapping tape on the flat tube group, and the strapping tape is in a relaxed state. The recovery part 4 is provided on the lower side of the holding mechanism 2 and the flat tube group, and the strapping tape in a relaxed state is recovered. The strapping tape is recovered under negative pressure. In the present embodiment, the recovery portion 4 and the cutting portion 3 maintain synchronous displacement in the first direction, that is, after the cutting portion 3 cuts off the strapping tape, the recovery portion 4 is just below the strapping tape; in other embodiments, the cutting portion 3 and the recovery portion 4 may not move at the same time, but may arrive one after the other; in other embodiments, the cutting structure may be arranged at other positions of the flat group, such as in the front-to-back direction or below; the recovery portion 4 may also be arranged at other positions; in the present embodiment, the cutting mechanism and the recovery mechanism may be driven by one driving member, or may be driven separately by multiple driving members.

[0040] The first side is the upper side of the holding mechanism 2, and the second side is the lower side of the holding structure; after the strapping belt is cut, it will be in a loose state and is likely to fall off the flat tube group. The recovery part 4 is arranged at the bottom, and the strapping belt can be recovered in time, thereby realizing efficient automatic recovery of the strapping belt.

[0041] The cutting mechanism includes an auxiliary part 5. The auxiliary part 5 moves synchronously with the cutting part 3 in the first direction and can move in the second direction to approach or move away from the holding mechanism 2. The auxiliary part 5 includes a vacuum part 51 and an adsorption part 52. The adsorption part 52 is arranged on the side of the vacuum part 51 close to the holding mechanism 2. The vacuum part 51 is connected to the first vacuum generator. In this embodiment, the auxiliary part 5 is integrated with the cutting part 3, can slide along the first guide rail 11, and the second driving part can drive the auxiliary part 5 in the second direction, that is, the up and down direction, to approach the binding tape. The vacuum part 51 is generally in a "冂" shape and straddles both sides of the cutting part 3 in the third direction perpendicular to the first direction, that is, the front and back direction. There are two docking holes provided at the top of the vacuum part 51, and the docking holes are connected to the vacuum generator. The lower part of the vacuum part 51 is provided with the adsorption part 52. The adsorption part 52 includes two suction cups, which are respectively arranged at the lower parts of the two end feet at the lower part of the vacuum part 51. When the vacuum part 51 generates negative pressure, the binding tape can be sucked up from the surface of the flat tube group, so that the horizontal height of a part of the binding tape is higher than the horizontal height of the lower part of the cutting blade 31. By providing the auxiliary part 5, when the binding tape is cut, the cut part can be separated from the flat tube surface by a certain distance, thus avoiding the flat tube being scratched by the cutting blade 31 when cutting the binding tape.

[0042] The cutting mechanism further includes a first driving part 34. The first driving part 34 is slidably connected to the first guide rail 11. The first driving part 34 can drive the cutting part 3 and / or the auxiliary part 5 to move in the second direction. In this embodiment, a first slider is slidably connected to the first guide rail 11. The first driving part 34 is an electric push rod or a cylinder and is fixedly connected to the first slider. The lower part of the first driving part 34 is fixedly connected to the cutting part 3 and the auxiliary part 5. When reaching the position of the binding tape, the first driving part drives the cutting part 3 and the auxiliary part 5 to move downward to approach the binding tape. When the binding tape reaches the working range of the adsorption part 52, the auxiliary part 5 sucks up the binding tape. Further, the first driving part 34 can move upward by a certain distance, and the cutting part 3 cuts off the binding tape. The adsorption part 52 stops adsorbing, and the paper tape is in a slack state waiting to fall off. When approaching the binding tape, it approaches automatically and efficiently.

[0043] The cutting part 3 includes a second driving member, which drives the cutting blade 31 to move in the first direction; the second driving member includes at least two transmission wheels 32, at least two transmission wheels 32 are provided with transmission belts 33, and the cutting blade 31 is detachably connected to the transmission belt 33; in the present embodiment, when the adsorption part 52 sucks up the strapping tape, the horizontal height of part of the strapping tape is higher than the lower part of the cutting blade 31, the second driving member includes a driving motor, and two transmission wheels 32, the transmission wheels 32 are provided with transmission belts 33, the movement direction of the transmission belt 33 is perpendicular to the extension direction of the strapping tape and the vacuum part 51, the cutting blade 31 is fixed on the transmission belt 33, the blade is downward or obliquely downward, the cutting blade 31 passes through the strapping tape under the action of the transmission belt 33, and the strapping tape is cut; in other embodiments, the blade can be a rotating blade; a second driving member is provided, which can independently perform the task of cutting the strapping tape, and the cutting speed can be adjusted to achieve flexible adjustment.

[0044] The cutting mechanism further comprises a protective cover 6, which is arranged at the lower part of the cutting mechanism, and has slots 61 at both ends of the protective cover 6 along the third direction; in this embodiment, the protective cover 6 is used to control the distance between the cutting part 3, the auxiliary part 5 and the flat tube group in the second direction, and the protective cover 6 surrounds the cutting part 3 and the auxiliary part 5 on all sides and the top, and when the first driving member 34 drives the protective cover 6, the cutting part 3, and the auxiliary part 5 to gradually approach the flat tube group, the lower part of the protective cover 6 contacts the surface of the flat tube group, the first driving member 34 stops moving, the strapping belt is located in the slot 61, and the auxiliary part 5 sucks the strapping belt Furthermore, the first driving member 34 moves upward a certain distance, and the cutting part 3 performs the cutting task; by setting the protective cover 6, the cutting action can be protected to be performed safely without accidentally injuring the staff. At the same time, the protective cover 6 has the function of controlling the distance, preventing the cutting part 3 and the auxiliary part 5 from being too close or too far from the flat tube group, thereby improving the cutting efficiency. The notch 61 is used to avoid the strapping belt, so that the strapping belt can be easily sucked up; in other embodiments, after the auxiliary part 5 sucks up the strapping belt and the distance from the flat tube group is sufficient, the first driving member 34 may no longer move upward.

[0045] The clamping member 22 of the holding mechanism 2 is connected to the third driving member. The holding mechanism 2 is provided with two groups, which are respectively arranged at the two ends of the base 1 along the first direction. In this embodiment, the support plate 21 is arranged at the two ends of the base 1 and avoids the position of the strapping belt. The clamping member 22 is also arranged at the two ends of the flat tube group. Therefore, after the flat tube group is clamped, there is no obstruction on the strapping belt in the middle part, up and down, front and back, and the movement of the cutting mechanism and the recovery mechanism will not be affected in any way, and the strapping belt can be easily cut and recovered.

[0046] It includes a second vacuum generator, the recovery mechanism is connected to the vacuum generator, and the recovery part 4 can generate negative pressure; through the negative pressure recovery method, there is no need to contact the flat tube, which can avoid scratching the flat tube when collecting the strapping tape, and has a higher recovery efficiency; in other embodiments, other methods of recovering the strapping tape can be used. Embodiment 4

[0047] A cutting method for cutting a flat tube strapping tape of an assembly machine comprises the following steps: The bundled flat tubes are placed on the assembly machine; The holding mechanism 2 clamps the bundled sheets; The cutting mechanism moves along a first direction to the position of the strapping tape; The cutting portion 3 moves from the first side of the holding mechanism 2 along the second direction and approaches the strapping belt; The cutting blade 31 cuts the strapping tape; The recovery unit 4 moves from the second side of the holding mechanism 2 to the position of the strapping tape and recovers the cut strapping tape; In the present embodiment, the sheet workpiece is a bundled flat tube group, and the bundling belt is a light-textured paper belt or plastic belt, etc. In the present embodiment, the first direction is the length direction of the base 1, which is parallel to the length direction of the flat tube group. The first base 1 is provided with a first guide rail 11, and the holding mechanism 2 is arranged on both sides of the base 1 for clamping the flat tube group from both ends. The flat tube group is placed on a support plate 21, and the clamping member 22 clamps the flat tube group front and back from both ends; in other embodiments, the holding mechanism 2 can be arranged in plurality under the flat tube group, and the clamping member 22 can be arranged in plurality for clamping along the front and back direction of the flat tube group; after the holding mechanism 2 clamps the flat tube group, the cutting mechanism is arranged on the upper side of the flat tube group and the holding mechanism 2, and the cutting portion 3 can slide along the first guide rail 11, and during the sliding process, The cutting blade 31 cuts off the strapping tape on the flat tube group, and the strapping tape is in a relaxed state. The recovery part 4 is arranged at the lower side of the holding mechanism 2 and the flat tube group, and the strapping tape in a relaxed state is recovered by negative pressure. In this embodiment, the recovery part 4 and the cutting part 3 maintain synchronous displacement in the first direction, that is, after the cutting part 3 cuts off the strapping tape, the recovery part 4 is just below the strapping tape; in other embodiments, the cutting part 3 and the recovery part 4 may not move at the same time, but may arrive one after another; in other embodiments, the cutting structure may be arranged at other positions of the flat group, such as in the front-to-back direction or below; the recovery part 4 may also be arranged at other positions; in this embodiment, the cutting mechanism and the recovery mechanism may be driven by one driving member, or may be driven separately by multiple driving members.

[0048] Also includes the steps: The cutting part 3 approaches the binding band downward from the upper side of the sheet, and the recycling part 4 approaches the binding band from the lower side of the sheet and recycles it. The recycling part 4 and the cutting part 3 maintain synchronous movement in the first direction. After the binding band is cut, it will be in a slack state and is likely to fall off the flat tube group. The recycling part 4 is arranged below to timely recycle the binding band, thus realizing the high-efficiency automatic recycling of the binding band.

[0049] It also includes steps: An auxiliary part 5 is provided on the cutting part 3. The auxiliary part 5 includes a vacuum part 51 and an adsorption part 52. The vacuum part 51 generates negative pressure, and the adsorption part 52 sucks up the binding band along the second direction. At least part of the binding band is separated from the surface of the sheet. The cutting blade 31 moves along the first direction to cut the binding band, and the adsorption part 52 stops adsorbing. In this embodiment, the auxiliary part 5 is integrated with the cutting part 3 and can slide along the first guide rail 11. And the second driving part can drive the auxiliary part 5 to approach the binding band from the second direction, that is, the up and down direction. The vacuum part 51 is generally in a "冂" shape and straddles both sides of the cutting part 3 in the third direction perpendicular to the first direction, that is, the front and back direction. There are two docking holes at the top of the vacuum part 51, and the docking holes are connected to the vacuum generator. The lower part of the vacuum part 51 is provided with the adsorption part 52. The adsorption part 52 includes two suction cups, which are respectively arranged at the lower parts of the two end feet at the lower part of the vacuum part 51. When the vacuum part 51 generates negative pressure, it can suck up the binding band from the surface of the flat tube group, so that the horizontal height of a part of the binding band is higher than the horizontal height of the lower part of the cutting blade 31. By setting the auxiliary part 5, when the binding band is cut, the cut part can be separated from the surface of the flat tube by a certain distance, thus avoiding the flat tube being scratched by the cutting blade 31 when cutting the binding band.

[0050] It also includes that the positioning mechanism identifies the position of the binding band. The positioning mechanism is a visual photographing mechanism, which is used to judge the position of the binding band. It also includes steps The cutting mechanism retracts to the initial position and detects whether there is any residual binding band during the retraction process. After the cutting part 3 and the auxiliary part 5 complete the cutting task, they will retract to the initial position and continue to take pictures and identify using the visual photographing mechanism during the retraction process to ensure the residual binding band on the flat tube group.

[0051] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A cutting device for cutting strapping of sheet material, characterized in that: include A base (1), the base (1) further comprising a first guide rail (11) extending along a first direction; the base (1) is further provided with a retaining mechanism (2), the retaining mechanism (2) comprising a support plate (21) and / or a clamping member (22); A cutting mechanism, the cutting mechanism comprising a cutting portion (3), the cutting portion (3) comprising a cutting blade (31), the cutting blade (31) being used to cut the strapping belt, the cutting portion (3) being slidably connected to the first guide rail (11) and being located on a first side of the holding mechanism (2); A recovery mechanism, the recovery mechanism being arranged on the base (1) and comprising a recovery portion (4), the recovery portion (4) being movable along a first direction and being located on a second side of the holding mechanism (2).

2. The cutting device according to claim 1, characterized in that The first side is the upper side of the holding mechanism (2), and the second side is the lower side of the holding mechanism (2).

3. The cutting device according to claim 2, characterized in that: The cutting mechanism comprises an auxiliary part (5), the auxiliary part (5) moves synchronously with the cutting part (3) in a first direction, and is capable of moving in a second direction to approach or move away from a holding mechanism (2), the auxiliary part (5) comprises a vacuum part (51) and an adsorption part (52), the adsorption part (52) is arranged on a side of the vacuum part (51) close to the holding mechanism (2), and the vacuum part (51) is connected to a first vacuum generator.

4. The cutting device according to claim 2, characterized in that: The cutting mechanism comprises an auxiliary part (5), wherein the auxiliary part (5) is a hook capable of moving along a second direction, the bottom of the hook having a flat surface, and the upper part of the hook having an inclined surface.

5. The cutting device according to claim 3 or 4, characterized in that: The cutting mechanism further comprises a first driving member (34), the first driving member (34) being slidably connected to the first guide rail (11), and the first driving member (34) being capable of driving the cutting portion (3) and / or the auxiliary portion (5) to move along a second direction.

6. The cutting device according to claim 5, characterized in that The cutting portion (3) comprises a second driving member, the second driving member driving the cutting blade (31) to move in a first direction; the second driving member comprises at least two transmission wheels (32), at least two of the transmission wheels (32) being provided with a transmission belt (33), and the cutting blade (31) is detachably connected to the transmission belt (33).

7. The cutting device according to claim 1, characterized in that The cutting mechanism further comprises a protective cover (6), wherein the protective cover (6) is arranged at the lower part of the cutting mechanism, and notches (61) are arranged at two ends of the protective cover (6) along the third direction.

8. The cutting device according to claim 1, characterized in that: The clamping member (22) of the retaining mechanism (2) is connected to a third driving member, and the retaining mechanism (2) is provided with two groups, which are respectively provided at two ends of the base (1) along the first direction.

9. The cutting device according to claim 1, characterized in that: The recovery mechanism comprises a second vacuum generator, the recovery portion (4) is connected to the vacuum generator, and the recovery portion (4) is capable of generating negative pressure.

10. An assembly machine for assembling a heat exchanger core, characterized in that: The invention comprises a cutting device, the cutting device comprises a base (1), the base (1) further comprising a first guide rail (11) extending in a first direction; the base (1) is further provided with a holding mechanism (2), the holding mechanism (2) comprising a support plate (21) and / or a clamping member (22); the cutting mechanism further comprises a cutting mechanism, the cutting mechanism comprises a cutting portion (3), the cutting portion (3) comprises a cutting blade (31), the cutting portion (3) is slidably connected to the first guide rail (11) and is located on a first side of the holding mechanism (2); the cutting device further comprises a recovery mechanism, the recovery mechanism is provided on the base (1), comprises a recovery portion (4), the recovery portion (4) is movable in the first direction and is located on a second side of the holding mechanism (2); the recovery portion (4) is capable of generating negative pressure; the cutting device is used for cutting and recovering a strapping tape on a workpiece.

11. A cutting method for cutting a flat tube strapping tape of an assembly machine, characterized in that: The following steps are involved: The holding mechanism (2) clamps the bundled sheets; The cutting mechanism moves along a first direction to a position of the strapping tape; The cutting portion (3) moves from the first side of the holding mechanism (2) along the second direction and approaches the strapping belt; The cutting blade (31) cuts off the strapping tape; The recovery unit (4) moves from the second side of the holding mechanism (2) to the position of the strapping band and recovers the cut strapping band.

12. A cutting method according to claim 11, characterized in that: Also includes The cutting part (3) approaches the strapping belt from the upper side of the sheet downward, and the recovery part (4) approaches the strapping belt from the lower side of the sheet and recovers the strapping belt, and the recovery part (4) and the cutting part (3) keep moving synchronously in the first direction.

13. A cutting method according to claim 11, characterized in that: Also includes The cutting portion (3) is provided with an auxiliary portion (5), the auxiliary portion (5) comprising a vacuum portion (51) and an adsorption portion (52), the vacuum portion (51) generates negative pressure, the adsorption portion (52) absorbs the strapping tape along a second direction, at least a portion of the strapping tape is spaced from the surface of the sheet material, the cutting blade (31) moves along a first direction to cut the strapping tape, and the adsorption portion (52) stops adsorption.

14. The tape cutting method according to claim 11, characterized in that: It also includes a positioning mechanism that identifies the position of the strapping belt, and the positioning mechanism is a visual camera mechanism.

15. The tape cutting method according to any one of claims 11 to 14, characterized in that: Also includes The cutting mechanism retracts to the initial position and detects whether there is any remaining strapping tape during the retraction process.

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