Pressing shifting fork device and chamfering machine thereof

Abstract

According to the pressing shifting fork device and the chamfering machine thereof, the pressing shifting fork device is connected with a telescopic driving assembly through a telescopic adjusting mechanism, a guide pressing head and a cushion block are oppositely arranged, and when the telescopic driving assembly drives the guide pressing head to be close to the cushion block, the guide pressing head can enable a heat exchange pipe between the guide pressing head and the cushion block to be located at the preset position of the cushion block; and the heat exchange tube is clamped, so that the heat exchange tube can be chamfered subsequently. The preset position is the position where the heat exchange tube is located when the chamfering is qualified. When the telescopic driving assembly drives the guide pressing head to get close to the cushion block, the guide pressing head can enable the heat exchange pipe between the guide pressing head and the cushion block to be located at the preset position of the cushion block, so that the guide effect is achieved, it is guaranteed that the heat exchange pipe is located at the preset position of the cushion block, and deformation of a copper pipe opening at a chamfer due to deviation of the heat exchange pipe is prevented. In addition, the pressing shifting fork can guide the heat exchange pipes of different models, the production requirements of the heat exchange pipes of various models are met, the machine adjusting time for pipe type switching is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of chamfering machines, and in particular to a pressing fork device and a chamfering machine thereof. Background Art

[0002] High-efficiency heat exchange tubes are the core heat exchange components of air conditioners. They play the role of pressure bearing, heat exchange, and medium exchange isolation in the entire heat exchange system. For commercial shell and tube heat exchangers, the assembly of high-efficiency heat exchange tubes is to insert the heat exchange tubes into the tube holes of the shell and tube tube sheet, so that the bare tube sections at both ends of the heat exchange tubes are flush with the tube sheet, and then expand them to expand and thin the bare tube sections of the heat exchange tubes, so that they fit tightly with the tube sheet to achieve the effect of pressure bearing and sealing.

[0003] In order to make the expansion joint between the heat exchange tube and the tube sheet better and achieve a good pressure-bearing sealing effect, it is necessary to ensure the cleanliness of the bare tube sections at both ends of the high-efficiency tube, and remove the burrs and flash generated at both ends of the tube mouth during the production of the high-efficiency tube. In addition, a certain chamfer is required to facilitate the insertion of the heat exchange tube.

[0004] On the current chamfering equipment for heat exchange tubes, the copper tube is sent to the chamfering device through a material conveyor belt in cooperation with a heat exchange tube clamping device. The existing clamping device loads the material by clamping the upper clamping block and the lower clamping block. The side of the upper clamping block facing the lower clamping block and the side of the lower clamping block facing the upper clamping block are both constructed with semicircular clamping grooves that are compatible with the heat exchange tube. When the heat exchange tube is loaded, it is not easy to align with the semicircular clamping groove, which makes it easy to deviate and cause deformation of the copper tube mouth at the chamfer. Summary of the invention

[0005] The object of the present invention is to provide a clamping fork device and a chamfering machine thereof, aiming to solve the technical problem that the clamping device of the existing chamfering machine has no guiding function and easily causes the heat exchange tube to deviate.

[0006] In order to solve the above problems, according to one aspect of the present application, an embodiment of the present invention provides a clamping fork device for a chamfering machine, the chamfering machine comprising a conveying device and a clamping device, the clamping device comprising a pad and a telescopic driving assembly capable of approaching or moving away from the pad, the clamping fork device comprising a guide pressure head and a telescopic adjustment mechanism connected to the guide pressure head, the telescopic adjustment mechanism being connected to the telescopic driving assembly, the guide pressure head being arranged opposite to the pad, the guide pressure head being close to the pad so that the heat exchange tube therebetween can be located at a preset position of the pad.

[0007] In some embodiments, the guide pressure head includes a connecting rod and two guide heads connected to one end of the connecting rod, the two guide heads extend away from one end of the connecting rod toward the pad, and the two guide heads are symmetrically arranged with the connecting rod as the center line, so that the connecting rod and the two guide heads form a Y-shaped structure, and the other end of the connecting rod is connected to the telescopic adjustment mechanism.

[0008] In some embodiments, the telescopic adjustment mechanism includes an elastic member and a sleeve having a first opening at one end, the sleeve is connected to the telescopic drive assembly, the other end of the connecting rod is inserted into the sleeve via the first opening, and the elastic member is clamped between the inner wall of the other end of the sleeve and the other end of the connecting rod.

[0009] In some embodiments, the telescopic adjustment mechanism also includes a slider and a limit member, the slider is slidably arranged in the sleeve along the axial direction, the other end of the connecting rod is connected to the slider, the elastic member is clamped between the inner wall of the other end of the sleeve and the slider, the sleeve is provided with a guide groove extending along the axial direction, the limit member is arranged on the slider, and is passed through the guide groove.

[0010] In some embodiments, a connecting portion is configured on a side of the sliding block facing the connecting rod, and the connecting portion is connected to the other end of the connecting rod.

[0011] In some embodiments, the slider further includes a positioning portion, the positioning portion is configured on a side of the slider away from the connecting rod, and one end of the elastic member is sleeved on the positioning portion.

[0012] In some embodiments, the telescopic adjustment mechanism also includes an adjusting member, the other end of the sleeve has an insertion hole, the adjusting member is inserted into the insertion hole, and abuts against the end of the elastic member away from the connecting rod, the inner wall of the insertion hole is configured with an internal thread, and the outer wall of the adjusting member is configured with an external thread, and the internal thread matches the external thread.

[0013] In some embodiments, the telescopic adjustment mechanism also includes a gasket, which is clamped between the adjusting member and the elastic member. The outer periphery of the gasket is configured with a limiting ring extending away from the adjusting member, and the end of the elastic member away from the connecting rod is located in the limiting ring.

[0014] In some embodiments, the clamping fork device also includes a fixing plate, which is connected to the telescopic drive assembly, and a through hole is formed on the fixing plate. One end of the sleeve is disposed on the fixing plate, and the through hole is aligned with the first opening.

[0015] According to another aspect of the present application, an embodiment of the present invention further provides a chamfering machine, which includes a conveying device, a clamping device and the clamping fork device as described above, wherein the clamping fork device is arranged on the clamping device and is used to guide and clamp the heat exchange tube between the guide pressure head of the clamping fork device and the pad of the clamping device that is transported by the conveying device to the heat exchange tube.

[0016] Compared with the prior art, the clamping fork device of the present invention has at least the following beneficial effects:

[0017] The embodiment of the present invention discloses a pressing fork device, which is used for a chamfering machine. The chamfering machine includes a conveying device and a pressing device. The conveying device is used to convey the heat exchange tube to between the guide pressure head and the cushion block. The pressing device includes the cushion block and a telescopic driving assembly that can approach or move away from the cushion block. The pressing fork device includes a guide pressure head and a telescopic adjustment mechanism connected to the guide pressure head. The present invention is connected to the telescopic driving assembly through the telescopic adjustment mechanism, and the guide pressure head and the cushion block are arranged relative to each other. When the telescopic driving assembly drives the guide pressure head to approach the cushion block, the guide pressure head can make the heat exchange tube between the two be located at a preset position of the cushion block, and clamp the heat exchange tube for subsequent chamfering of the heat exchange tube. The preset position is the position where the heat exchange tube is located when the chamfering is qualified. When the telescopic driving assembly drives the guide pressure head to approach the cushion block, the guide pressure head can make the heat exchange tube between the two be located at the preset position of the cushion block, so it has a guiding effect, ensures that the heat exchange tube is located at the preset position of the cushion block, and prevents the heat exchange tube from being deformed due to deviation of the copper tube mouth at the chamfer. In addition, the clamping fork can guide different types of heat exchange tubes to meet the production needs of various types of heat exchange tubes, reduce the machine adjustment time for switching tube types, and improve production efficiency.

[0018] On the other hand, the chamfering machine provided by the present invention is manufactured based on the above-mentioned clamping fork device, and its beneficial effects can be found in the beneficial effects of the above-mentioned clamping fork device, which will not be described in detail here.

[0019] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of the three-dimensional structure of a pressing device provided in an embodiment of the present invention;

[0022] Figure 2 A three-dimensional cross-sectional view of a collar assembly provided in an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of the exploded structure of a clamping device provided in an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the exploded structure of the pressing device provided by an embodiment of the present invention from another perspective;

[0025] Figure 5 A schematic structural diagram of a slider of a clamping device provided in an embodiment of the present invention;

[0026] Figure 6 A schematic structural diagram of a sleeve of a pressing device provided in an embodiment of the present invention;

[0027] Figure 7 A schematic structural diagram of a guide pressure head of a clamping device provided in an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 2. Guide pressure head; 21. Connecting rod; 22. Guide head;

[0030] 3. Telescopic adjustment mechanism; 31. Elastic member; 32. Sleeve; 321. First opening; 322. Guide groove; 323. Insertion hole; 33. Slider; 331. Connecting part; 332. Positioning part; 34. Adjusting member; 35. Gasket; 351. Limiting ring; 4. Fixing plate; 41. Through hole. DETAILED DESCRIPTION

[0031] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention application are described in detail below in conjunction with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0032] In the description of the present invention, it should be clarified that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, but are not necessarily used to describe a specific order or sequence; the terms "vertical", "lateral", "longitudinal", "front", "rear", "left", "right", "up", "down", "horizontal", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention, and do not mean that the referred device or element must have a specific direction or position, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Example 1

[0035] like Figure 1-7 As shown, an embodiment of the present invention provides a clamping fork device for a chamfering machine, the chamfering machine comprising a conveying device and a clamping device, the clamping device comprising a pad and a telescopic driving assembly capable of approaching or moving away from the pad, the clamping fork device comprising a guide pressure head 2 and a telescopic adjustment mechanism 3 connected to the guide pressure head 2, the telescopic adjustment mechanism 3 being connected to the telescopic driving assembly, the guide pressure head 2 being arranged opposite to the pad, the guide pressure head 2 being close to the pad so that the heat exchange tube therebetween can be located at a preset position of the pad.

[0036] In this embodiment, the pressing fork device is used for the chamfering machine, which includes a conveying device and a pressing device. The conveying device is used to convey the heat exchange tube to between the guide pressure head 2 and the cushion block. The pressing device includes the cushion block and a telescopic driving assembly that can approach or move away from the cushion block. The pressing fork device includes the guide pressure head 2 and a telescopic adjustment mechanism 3 connected to the guide pressure head 2. This embodiment is connected to the telescopic driving assembly through the telescopic adjustment mechanism 3, and the guide pressure head 2 is arranged opposite to the cushion block. When the telescopic driving assembly drives the guide pressure head 2 to approach the cushion block, the guide pressure head 2 can make the heat exchange tube between the two be located at the preset position of the cushion block and clamp the heat exchange tube for subsequent chamfering of the heat exchange tube. The preset position is the position of the heat exchange tube when the chamfering is qualified.

[0037] In this embodiment, when the telescopic driving assembly drives the guide pressure head 2 to approach the pad, the guide pressure head 2 can make the heat exchange tube between the two be located at the preset position of the pad, thereby having a guiding effect, ensuring that the heat exchange tube is located at the preset position of the pad, and preventing the heat exchange tube from running off and causing deformation of the copper tube mouth at the chamfer.

[0038] In addition, since the existing clamping device loads materials by clamping the upper and lower clamping blocks, the side of the upper clamping block facing the lower clamping block and the side of the lower clamping block facing the upper clamping block are both constructed with semicircular clamping grooves that are compatible with the heat exchange tube. Different types of heat exchange tubes have different tube diameters, and it is necessary to design upper and lower clamping blocks with different clamping grooves for clamping. Each time a different type of heat exchange tube is switched, the corresponding upper and lower clamping blocks need to be adjusted and replaced, which increases the machine adjustment time for switching tube types.

[0039] The telescopic adjustment mechanism 3 enables the guide pressure head 2 to flexibly guide and press the heat exchange tube to prevent the heat exchange tube from being deformed due to excessive pressure.

[0040] The pressing fork of this embodiment can guide heat exchange tubes of different models to meet the production requirements of heat exchange tubes of various models, reduce the machine adjustment time for switching tube types, and improve production efficiency.

[0041] If the gasket uses the original lower clamp block, for different types of heat exchange tubes, only the lower clamp block needs to be replaced. When replacing the lower clamp block, the heat exchange tube can be placed on the clamping fork, and then the position of the lower clamp block can be located by the heat exchange tube. This also reduces the machine adjustment time for switching tube types and improves production efficiency.

[0042] In some embodiments, the guide pressure head 2 includes a connecting rod 21 and two guide heads 22 connected to one end of the connecting rod 21, the two guide heads 22 extend toward the pad away from one end of the connecting rod 21, and the two guide heads 22 are symmetrically arranged with the connecting rod 21 as the center line, so that the connecting rod 21 and the two guide heads 22 form a Y-shaped structure, and the other end of the connecting rod 21 is connected to the telescopic adjustment mechanism 3.

[0043] In this embodiment, the guide pressure head 2 includes a connecting rod 21 and two guide heads 22 connected to one end of the connecting rod 21. The two guide heads 22 extend toward the cushion block away from one end of the connecting rod 21. The two guide heads 22 and the connecting rod 21 are symmetrically arranged in the center line, so that the connecting rod 21 and the two guide heads 22 form a Y-shaped structure. When the telescopic drive assembly drives the guide pressure head 2 to approach the cushion block, the guide pressure head 2 guides the heat exchange tube through the two guide heads 22. Ensure that the heat exchange tube is located at the preset position of the cushion block to prevent the deformation of the copper tube mouth at the chamfer due to deviation of the heat exchange tube. At the same time, it can meet the production needs of various types of heat exchange tubes, reduce the machine adjustment time for switching tube types, and improve production efficiency.

[0044] In some embodiments, the telescopic adjustment mechanism 3 includes an elastic member 31 and a sleeve 32 having a first opening 321 at one end, the sleeve 32 is connected to the telescopic drive assembly, the other end of the connecting rod 21 is inserted into the sleeve 32 via the first opening 321, and the elastic member 31 is clamped between the inner wall of the other end of the sleeve 32 and the other end of the connecting rod 21.

[0045] In this embodiment, the sleeve 32 is connected to the telescopic drive assembly, the other end of the connecting rod 21 is inserted into the sleeve 32 through the first opening 321, and the elastic member 31 is clamped between the inner wall of the other end of the sleeve 32 and the other end of the connecting rod 21. This structure enables the guide pressure head 2 to flexibly guide and press the heat exchange tube to prevent deformation of the heat exchange tube due to excessive pressure.

[0046] In some embodiments, the telescopic adjustment mechanism 3 also includes a slider 33 and a limit member. The slider 33 is slidably arranged in the sleeve 32 along the axial direction. The other end of the connecting rod 21 is connected to the slider 33. The elastic member 31 is clamped between the inner wall of the other end of the sleeve 32 and the slider 33. The sleeve 32 is provided with a guide groove 322 extending along the axial direction. The limit member is arranged on the slider 33 and penetrates into the guide groove 322.

[0047] In this embodiment, a limiting member is disposed on the slider 33 , and the limiting member is penetrated into the guide groove 322 , so as to prevent the guide pressure head 2 from rotating in the sleeve 32 , thereby improving the accuracy of the guidance.

[0048] In some embodiments, a connecting portion 331 is configured on a side of the slider 33 facing the connecting rod 21 , and the connecting portion 331 is connected to the other end of the connecting rod 21 .

[0049] In some embodiments, the slider 33 further includes a positioning portion 332 , which is configured on a side of the slider 33 away from the connecting rod 21 , and one end of the elastic member 31 is sleeved on the positioning portion 332 .

[0050] In this embodiment, one end of the elastic member 31 is sleeved on the positioning portion 332 to prevent the elastic member 31 from being separated from the slider 33 .

[0051] In some embodiments, the telescopic adjustment mechanism 3 also includes an adjusting member 34, the other end of the sleeve 32 has an insertion hole 323, the adjusting member 34 is inserted into the insertion hole 323, and abuts against the end of the elastic member 31 away from the connecting rod 21, the inner wall of the insertion hole 323 is configured with an internal thread, and the outer wall of the adjusting member 34 is configured with an external thread, and the internal thread matches the external thread.

[0052] In this embodiment, the depth of the adjusting member 34 inserted into the sleeve 32 can be adjusted by rotating the adjusting member 34, and the elastic member 31 can be compressed by the adjusting member 34 to adjust the length of the elastic member 31 of the telescopic adjusting mechanism 3, thereby ensuring that the elastic member 31 is in a compressed state. This structure can be adjusted after assembly, which is convenient for debugging of the equipment.

[0053] In some embodiments, the telescopic adjustment mechanism 3 also includes a gasket 35, which is clamped between the adjustment member 34 and the elastic member 31. The outer periphery of the gasket 35 is configured with a limiting ring 351 extending away from the adjustment member 34, and the end of the elastic member 31 away from the connecting rod 21 is located in the limiting ring 351.

[0054] In this embodiment, the elastic member 31 is prevented from being separated from the adjusting member 34 by limiting the end of the elastic member 31 away from the connecting rod 21 in the limiting ring 351 .

[0055] In some embodiments, the clamping fork device further includes a fixing plate 4 , which is connected to the fixing plate 4 , and has a through hole 41 , one end of the sleeve 32 is disposed on the fixing plate 4 , and the through hole 41 is aligned with the first opening 321 .

[0056] In this embodiment, the telescopic drive assembly is connected to the sleeve 32 via the fixing plate 4. The fixing plate 4 is fitted with the reference plate on the telescopic drive assembly, which can improve the installation accuracy and ensure the accuracy of the guidance of the clamping fork device.

[0057] The inner diameter of the through hole 41 is smaller than the inner diameter of the first opening 321 , the outer diameters of the connecting portion 331 and the connecting rod 21 are no larger than the inner diameter of the through hole 41 , and the outer diameter of the slider 33 is larger than the inner diameter of the through hole 41 , preventing the slider 33 and the elastic member 31 from detaching from the sleeve 32 .

[0058] Example 2

[0059] An embodiment of the present invention also provides a chamfering machine, which includes a conveying device, a clamping device and the clamping fork device of Example 1, wherein the clamping fork device is arranged on the clamping device and is used to guide and clamp the heat exchange tube between the guide pressure head 2 of the clamping fork device and the pad of the clamping device that is transported by the conveying device to the clamping fork device.

[0060] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described equipment, devices and units can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0061] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A clamping fork device for a chamfering machine, the chamfering machine comprising a conveying device and a clamping device, the clamping device comprising a cushion block and a telescopic drive assembly capable of approaching or moving away from the cushion block, characterized in that: The clamping fork device includes a guide pressure head and a telescopic adjustment mechanism connected to the guide pressure head, the telescopic adjustment mechanism is connected to the telescopic drive assembly, the guide pressure head is arranged opposite to the cushion block, and the guide pressure head is close to the cushion block so that the heat exchange tube between the two can be located at a preset position of the cushion block.

2. The pressing fork device according to claim 1, characterized in that: The guide pressure head includes a connecting rod and two guide heads connected to one end of the connecting rod, the two guide heads extend toward the pad away from one end of the connecting rod, and the two guide heads are symmetrically arranged with the connecting rod as the center line, so that the connecting rod and the two guide heads form a Y-shaped structure, and the other end of the connecting rod is connected to the telescopic adjustment mechanism.

3. The pressing fork device according to claim 2, characterized in that: The telescopic adjustment mechanism includes an elastic member and a sleeve having a first opening at one end, the sleeve is connected to the telescopic drive assembly, the other end of the connecting rod is inserted into the sleeve via the first opening, and the elastic member is clamped between the inner wall of the other end of the sleeve and the other end of the connecting rod.

4. The pressing fork device according to claim 3, characterized in that: The telescopic adjustment mechanism also includes a slider and a limit piece. The slider is slidably arranged in the sleeve along the axial direction. The other end of the connecting rod is connected to the slider. The elastic member is clamped between the inner wall of the other end of the sleeve and the slider. The sleeve is provided with a guide groove extending along the axial direction. The limit piece is arranged on the slider and penetrates into the guide groove.

5. The pressing fork device according to claim 4, characterized in that: A connecting portion is configured on one side of the sliding block facing the connecting rod, and the connecting portion is connected to the other end of the connecting rod.

6. The pressing fork device according to claim 4, characterized in that: The slider further comprises a positioning portion, which is configured on a side of the slider away from the connecting rod, and one end of the elastic member is sleeved on the positioning portion.

7. The pressing fork device according to claim 4, characterized in that: The telescopic adjustment mechanism also includes an adjusting piece. The other end of the sleeve has an insertion hole. The adjusting piece is inserted into the insertion hole and abuts against the end of the elastic piece away from the connecting rod. The inner wall of the insertion hole is configured with an internal thread, and the outer wall of the adjusting piece is configured with an external thread, and the internal thread matches the external thread.

8. The pressing fork device according to claim 7, characterized in that: The telescopic adjustment mechanism also includes a gasket, which is clamped between the adjustment member and the elastic member. The outer periphery of the gasket is configured with a limiting ring extending away from the adjustment member, and one end of the elastic member away from the connecting rod is located in the limiting ring.

9. The pressing fork device according to claim 3, characterized in that: The clamping fork device also includes a fixing plate, which is connected to the telescopic drive assembly. A through hole is provided on the fixing plate, one end of the sleeve is arranged on the fixing plate, and the through hole is aligned with the first opening.

10. A chamfering machine, characterized in that: The chamfering machine includes a conveying device, a clamping device and a clamping fork device according to any one of claims 1 to 9, wherein the clamping fork device is arranged on the clamping device and is used to guide and clamp the heat exchange tube between the guide pressure head of the clamping fork device and the pad of the clamping device that is transported by the conveying device to the clamping fork device.

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