Pipe expanding equipment for heat exchanger

Abstract

The utility model discloses tube expanding equipment for a heat exchanger. The tube expanding equipment comprises a base, a positioning mechanism and a tube expanding mechanism, the base is provided with a positioning upper die, and the positioning upper die is provided with a plurality of vertically-through guide holes. The positioning mechanism comprises a positioning plate and a pressing plate. The positioning plate is provided with a clamping positioning groove. The pressing plate is arranged in the clamping positioning groove in an opening and closing mode. The pipe expanding mechanism is arranged on the upper side of the positioning upper die. The pipe expanding mechanism comprises a pipe expanding driving cylinder and a plurality of pipe expanding rods. The pipe expanding rods are arranged downwards and penetrate through the guide holes in a one-to-one correspondence mode. The pipe expanding driving cylinder is used for driving the pipe expanding rods to move up and down. According to the heat exchanger tube expanding equipment, a product is positioned through the positioning mechanism, tube expanding machining is conducted through the tube expanding mechanism, automatic machining of the heat exchanger module tube expanding procedure can be achieved, and machining stability, production efficiency and safety are high.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger production equipment technical field, especially in a kind of heat exchanger pipe expanding equipment. BACKGROUND

[0002] In the production and processing of heat exchanger tube plate, need to be expanded by pipe processing to make the diameter of heat exchange pipe expand, the heat dissipation fin of outside is tightened, realizes efficient heat conduction.In addition, the end of heat exchange metal pipe is also flared, realizes heat exchanger tube plate connecting part tight expansion, so that it will not leak water, gas leakage, and can withstand certain pressure.

[0003] Some small enterprises are mainly based on manpower when expanding heat exchanger pipe, and workers manually expand pipe by holding expansion gun against metal pipe, which is very laborious and inefficient, and cannot guarantee the same operation control standard.Although there are various expansion devices in the prior art, the functions are single, and the adaptability is weak. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of heat exchanger pipe expanding equipment to solve one or more technical problems existing in prior art, at least provide a kind of beneficial selection or create conditions.

[0005] To solve the above technical problems, the technical scheme adopted is:

[0006] A kind of heat exchanger pipe expanding equipment, including: pedestal, positioning mechanism and pipe expanding mechanism;

[0007] The pedestal is provided with positioning upper die, and the positioning upper die has multiple through holes;

[0008] The positioning mechanism is arranged below the positioning upper die, and the positioning mechanism includes positioning plate and pressing plate, the positioning plate has the clamping positioning groove extending up and down, and the pressing plate can be opened and closed in the clamping positioning groove;

[0009] The pipe expanding mechanism is arranged on the upper side of the positioning upper die, and the pipe expanding mechanism includes pipe expanding drive cylinder and multiple pipe expanding rods, multiple pipe expanding rods are arranged downward and correspondingly arranged in the through hole, and the pipe expanding drive cylinder is used to drive multiple pipe expanding rods to move up and down relative to the pedestal.

[0010] The heat exchanger pipe expanding equipment has the following beneficial effects: the heat exchange module needing pipe expanding is positioned by the clamping positioning groove, and the pressing plate can be pressed in the clamping positioning groove. The pipe expanding rod is inserted into the heat exchange pipe under the driving of the pipe expanding drive cylinder, so that the heat exchange pipe is expanded and deformed to be connected with the heat dissipation fins in interference. The guide hole position of the positioning upper die is set according to the pipe opening position of the heat exchange pipe, the pipe expanding rod can be positioned and guided through the guide hole, and the pipe expanding rod can be inserted into the heat exchange pipe one by one. The positioning mechanism can conveniently feed the heat exchanger module up and down through the opening and closing of the pressing plate, and the heat exchanger module can be fixed during pipe expanding. The heat exchanger pipe expanding equipment can realize automatic pipe expanding of the heat exchanger module, and has high processing stability, production efficiency and safety.

[0011] As a further improvement of the above technical solution, the base is further provided with a positioning lower die, the positioning lower die is arranged below the positioning mechanism, and the positioning lower die has an upwardly open profiling positioning groove.

[0012] As a further improvement of the above technical solution, the number of the positioning mechanisms is multiple, and the multiple positioning mechanisms are arranged in an up-down arrangement between the positioning upper die and the positioning lower die.

[0013] As a further improvement of the above technical solution, the heat exchanger pipe expanding equipment further comprises a lifting beam and a lifting drive member for driving the lifting beam to move up and down relative to the base, and the positioning upper die is installed on the lifting beam.

[0014] As a further improvement of the above technical solution, the lower end of the guide hole is provided with a flared cup, and the outer periphery of the flared cup is in the shape of a conical body widening upwards and narrowing downwards.

[0015] As a further improvement of the above technical solution, the base has a buckle part, the left and right sides of the lifting beam are each provided with a pressure maintaining member, the pressure maintaining member comprises a hook and a pressure maintaining drive cylinder, one end of the hook is rotationally connected with the lifting beam, the other end has a hook part buckled with the buckle part, and the pressure maintaining drive cylinder is used to drive the hook to rotate relative to the lifting beam.

[0016] As a further improvement of the above technical solution, the base is provided with a limiting block in the up-down direction, the limiting block is arranged on the lower side of the left and right ends of the lifting beam, and the buckle part is arranged on the limiting block.

[0017] As a further improvement of the above technical solution, the lower part of the base is provided with a positioning pin arranged upwardly, and the lifting beam has a pin sleeve aligned with the positioning pin in the up-down direction.

[0018] As a further improvement of the above technical solution, the positioning plate comprises a base plate and two positioning members, the two positioning members are arranged in left and right intervals, and the two positioning members are adjustably connected with the base plate in the left-right direction.

[0019] As a further improvement of the above technical solution, one end of the pressing plate is rotationally connected with the positioning plate, and the other end is provided with a locking member for connecting with the base plate. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model will be further described below in combination with the drawings and embodiments;

[0021] Fig. 1 is the front view of the positioning mechanism in the closed state in one embodiment of the heat exchanger pipe expanding equipment provided by the utility model;

[0022] Fig. 2 is the front view of the positioning mechanism in the open state in one embodiment of the heat exchanger pipe expanding equipment provided by the utility model.

[0023] In the drawing: 100, base; 110, positioning lower die; 111, profiling positioning groove; 120, limiting block; 200, lifting beam; 210, positioning upper die; 211, flared cup; 220, pressure maintaining member; 221, clamping hook; 222, pressure maintaining driving cylinder; 300, positioning mechanism; 310, positioning plate; 311, clamping positioning groove; 312, base plate; 313, positioning member; 314, mounting groove; 320, pressing plate; 321, locking member; 400, pipe expanding mechanism; 410, pipe expanding driving cylinder; 420, pipe expanding sliding seat; 430, pipe expanding rod. DETAILED DESCRIPTION

[0024] This part will describe the specific embodiments of the utility model in detail, the preferred embodiments of the utility model are shown in the drawings, the function of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0025] In the description of the utility model, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the utility model.

[0026] In the description of the utility model, if the word such as "several" has the meaning of one or more, the meaning of more than two, greater than, less than, more than, etc. Understand as not including the number, above, below, within, etc. Understand as including the number.

[0027] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection, etc. Should be broadly understood, and the person skilled in the art can determine the specific meaning of the above words in the utility model in combination with the specific content of the technical scheme.

[0028] Refer to Figs. 1-2 The heat exchanger pipe expanding equipment of the utility model makes the following embodiment:

[0029] A heat exchanger pipe expanding equipment, comprising: a base 100, a positioning mechanism 300 and a pipe expanding mechanism 400.

[0030] The base 100 is provided with a positioning upper die 210. The positioning upper die 210 has a plurality of through holes extending up and down. The pipe expanding mechanism 400 is arranged on the upper side of the positioning upper die 210, and the positioning mechanism 300 is arranged on the lower side of the positioning upper die 210.

[0031] The positioning mechanism 300 comprises a positioning plate 310 and a pressing plate 320. The front side of the positioning plate 310 has a clamping positioning groove 311 extending up and down. The pressing plate 320 is arranged on the front side of the positioning plate 310 in an openable and closable manner, so as to realize the opening and closing of the front side of the clamping positioning groove 311.

[0032] The pipe expanding mechanism 400 comprises a pipe expanding drive cylinder 410 and a pipe expanding rod 430. The number of the pipe expanding rod 430 is multiple. The multiple pipe expanding rods 430 all extend in the up-down direction and are correspondingly arranged in the through holes. The pipe expanding drive cylinder 410 is used to drive the multiple pipe expanding rods 430 to move up and down relative to the base 100.

[0033] In actual use, the heat exchange module needing tube expansion processing is positioned by the clamping positioning groove 311, and the pressing plate 320 can be pressed in the clamping positioning groove 311. The tube expansion rod 430 is inserted into the heat exchange tube under the drive of the tube expansion drive cylinder 410, so that the heat exchange tube is deformed and expanded to be connected with the heat dissipation fin in an interference fit. The guide hole position of the positioning upper die 210 is set according to the pipe opening position of the heat exchange tube, the tube expansion rod 430 can be positioned and guided through the guide hole, so that the tube expansion rod 430 can be inserted into the heat exchange tube one by one. The positioning mechanism 300 can facilitate the feeding and discharging of the heat exchanger module through the opening and closing of the pressing plate 320, and can fix the heat exchanger module during tube expansion processing. The heat exchanger tube expansion equipment can realize automatic tube expansion processing of the heat exchanger module, and has high processing stability, production efficiency and safety.

[0034] The lower end of the tube expansion rod 430 is a sharp end, which can be more easily inserted into the heat exchange tube and can reduce the tube expansion resistance.

[0035] Since the resistance during the process of inserting the tube expansion rod 430 into the heat exchange tube is large, in the embodiment, the tube expansion drive cylinder 410 is a downwardly arranged hydraulic cylinder. The base 100 is provided with a tube expansion sliding seat 420 which is slidingly installed in the up-down direction. The tube expansion rods 430 are all fixedly arranged on the lower side of the tube expansion sliding seat 420. The upper end of the tube expansion rod 430 is fixedly connected with the tube expansion sliding seat 420. The cylinder body of the tube expansion drive cylinder 410 is fixedly connected with the base 100, and the piston rod of the tube expansion drive cylinder 410 is drivingly connected with the tube expansion sliding seat 420. The tube expansion sliding seat 420 is moved up and down by the tube expansion drive cylinder 410, so that the tube expansion rod 430 is raised and lowered, and the tube expansion rod 430 is inserted into or pulled out of the heat exchange tube, so as to achieve the effect of tube expansion processing.

[0036] In the embodiment, the lower part of the base 100 is further provided with a positioning lower die 110. The positioning upper die 210 and the positioning lower die 110 are arranged in an up-down mode. The positioning mechanism 300 is arranged between the positioning upper die 210 and the positioning lower die 110. The positioning lower die 110 has an upwardly open profiled positioning groove 111.

[0037] For the tube expansion processing of the heat exchange tube extending in a U shape, the profiled positioning groove 111 is in the shape of a circular arc groove, and each profiled positioning groove 111 is aligned with two guide holes in an up-down mode. The profiled positioning groove 111 abuts against the elbow at the lower end of the heat exchange tube, and the two guide holes are aligned with the two pipe openings at the upper end of the heat exchange tube, respectively. The profiled positioning groove 111 can provide support for the elbow at the lower end of the heat exchange tube, so that the tube expansion rod 430 can be inserted into the heat exchange tube.

[0038] In some embodiments, the positioning mechanism 300 is provided in multiple numbers, and the multiple positioning mechanisms 300 are arranged in the up-down direction between the positioning upper die 210 and the positioning lower die 110. The height dimension of the multiple positioning mechanisms 300 can be set according to the common heat exchanger module height dimension specification. In actual use, the corresponding positioning mechanism 300 is activated according to the height dimension specification of the heat exchanger module. The positioning mechanism 300 in the present embodiment has two. The two positioning mechanisms 300 are arranged in the up-down direction. The height dimensions of the two positioning mechanisms 300 are inconsistent.

[0039] In the present embodiment, the heat exchanger tube expanding equipment further comprises a lifting beam 200 and a lifting driving member. The lifting beam 200 is slidingly installed in the base 100 in the up-down direction, and the positioning upper die 210 is installed on the lifting beam 200. The lifting driving member has a lifting driving end that is in transmission connection with the lifting beam 200 and moves the lifting beam 200 up and down relative to the base 100.

[0040] The lifting beam 200 is moved up and down by the lifting driving member, so that the positioning upper die 210 can be moved up and down, facilitating the installation and fixation of the heat exchanger module between the positioning upper die 210 and the positioning lower die 110. In actual use, the lifting beam 200 is lifted upward for avoidance, and after the heat exchanger module is clamped by the positioning mechanism 300, the lifting beam 200 is pressed downward, so that the positioning upper die 210 presses the heat exchanger module downward on the positioning lower die 110.

[0041] Further, the positioning upper die 210 is further provided with multiple flaring cups 211. The flaring cups 211 are coaxially arranged one by one at the lower ends of the guide holes. The middle part of the flaring cup 211 penetrates up and down and is in communication with the guide hole, and the outer periphery of the flaring cup 211 is in the shape of a cone that is wide at the top and narrow at the bottom.

[0042] When the positioning upper die 210 is pressed downward on the heat exchanger module, the flaring cup 211 can perform flaring processing on the upper end of the heat exchanger tube. Since a large pressure is required for the flaring cup 211 to be pressed into the heat exchanger tube, in the present embodiment, the lifting driving member is a downwardly arranged hydraulic cylinder. The cylinder body of the lifting driving member is fixedly connected with the base 100, and the piston rod of the lifting driving member is in transmission connection with the lifting beam 200.

[0043] In order to enhance the flaring stability and avoid flaring cracking, the left and right sides of the lifting beam 200 are provided with pressure maintaining members 220. The pressure maintaining member 220 comprises a hook 221 and a pressure maintaining driving cylinder 222. One end of the hook 221 is rotationally connected with the lifting beam 200, and the other end has a hook part which is buckled with the base 100. The pressure maintaining driving cylinder 222 has a pressure maintaining driving end which is transmissionally connected with the hook 221 and makes the hook 221 rotate relative to the lifting beam 200. In the embodiment, the pressure maintaining driving cylinder 222 is a hydraulic cylinder. In other embodiments, the pressure maintaining driving cylinder 222 can adopt driving elements such as air cylinder, electric push rod, hydraulic push rod and the like.

[0044] In the embodiment, the base 100 is provided with a limiting block 120 which is adjustably arranged along the up-down direction. The limiting block 120 has a buckle part. The upper end of the hook 221 is rotationally connected with the lifting beam 200, and the hook part is arranged at the lower end of the hook 221 and buckled with the buckle part. When the lifting driving member drives the lifting beam 200 to press downward, the hook part of the hook 221 is connected with the buckle part, so that the lifting beam 200 is prevented from resetting upward during the tube expanding and flaring processing. When the tube expanding and flaring processing is completed, the tube expanding driving cylinder 410 drives the tube expanding slide 420 to reset upward, and the pressure maintaining driving cylinder 222 drives the hook 221 to rotate, so that the hook part is deviated outward and separated from the buckle part, and the lifting driving member can drive the lifting beam 200 to reset upward.

[0045] Referring to the drawings Fig. 1 and Fig. 2 In the embodiment, the left and right sides of the front part of the base 100 are provided with guide columns which extend along the up-down direction. The two guide columns are slidably arranged at the left and right ends of the lifting beam 200. The limiting block 120 is arranged at the lower side of the lifting beam 200. The limiting block 120 is sleeved with the guide columns and is locked and connected with the guide columns through screws. In actual use, the limiting block 120 can limit the lower limit position of the lifting beam 200, and the buckle part can be buckled with the hook 221 to realize the pressure maintaining positioning of the lifting beam 200.

[0046] In further embodiments, the lower part of the base 100 is provided with a positioning pin which is arranged upward. The lifting beam 200 has a pin sleeve which is vertically aligned with the positioning pin. When the lifting driving member drives the lifting beam 200 to move downward, the pin sleeve is sleeved with the positioning pin, so that the lifting beam 200 is guided and positioned, the positioning accuracy of the positioning upper die 210 is improved, and the processed heat exchanger module is prevented from being damaged.

[0047] In the embodiment, the positioning plate 310 comprises a base plate 312 and two positioning members 313. The positioning members 313 are in the shape of long strips extending in the up-down direction. The up-down ends of the positioning members 313 are flush with the up-down ends of the base plate 312 respectively. The two positioning members 313 are arranged in the left-right direction to form the clamping positioning groove 311.

[0048] To adapt to the tube expansion processing of heat exchanger module with different width sizes, the two positioning members 313 in the embodiment are adjustably connected with the base plate 312 in the left-right direction. Specifically, the base plate 312 has two mounting grooves 314 extending in the left-right direction, and the two mounting grooves 314 are arranged in the up-down direction. A nut is clamped in the mounting groove 314, and the positioning member 313 is provided with a screw threadedly connected with the nut. The positioning member 313 is adjustably positioned in the left-right direction through the detachable connection of the screw and the nut.

[0049] The pressing plate 320 is arranged on the front side of the positioning plate 310 in an openable and closable manner. One end of the pressing plate 320 is rotationally connected with the positioning plate 310, and the other end is provided with a locking member 321 for connecting with the base plate 312. Referring to the accompanying drawings, Fig. 2 The left end of the pressing plate 320 is rotationally connected with the positioning plate 310, so that the pressing plate 320 has a rotation axis extending in the up-down direction. The right end of the pressing plate 320 is provided with the locking member 321.

[0050] The locking member 321 in the embodiment is a bolt extending in the left-right direction, and the right end of the positioning plate 310 is provided with a hole aligned with the bolt in the left-right direction. In some embodiments, the locking member 321 can also be a spring bolt, which is elastically arranged to lock and fix with the positioning plate 310. In some other embodiments, the locking member 321 can also be a quick clamp to drive the bolt on the pressing plate 320, so that the quick clamp can realize the plugging and unplugging actions, so that the bolt can realize self-locking to avoid connection failure.

[0051] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0052] Although the embodiments of the utility model have been shown and described, those of ordinary skill in the art can make various changes, modifications, replacements and variations to these embodiments without departing from the principles and purposes of the utility model, and these changes, modifications, equivalent variations or replacements are all included in the range defined by the claims of the present application, and the range of the utility model is defined by the claims and their equivalents.

Claims

1. A heat exchanger tube expanding apparatus characterized by: The utility model relates to a positioning and expanding device for pipe, including: The base is equipped with the positioning upper die, and the positioning upper die has a plurality of through guide holes; The positioning mechanism is arranged below the positioning upper die and includes a positioning plate and a pressing plate, the positioning plate has a clamping positioning groove extending upward and downward, and the pressing plate is arranged in the clamping positioning groove in an openable and closable manner; The pipe expanding mechanism is arranged on the upper side of the positioning upper die and includes a pipe expanding drive cylinder and a plurality of pipe expanding rods, the plurality of pipe expanding rods are arranged downward and correspondingly arranged in the guide holes, and the pipe expanding drive cylinder is used to drive the plurality of pipe expanding rods to move upward and downward relative to the base.

2. The heat exchanger tube expansion apparatus of claim 1, wherein: The base is also provided with a positioning lower die, which is arranged below the positioning mechanism, and the positioning lower die has an upwardly open profiling positioning groove.

3. The heat exchanger tube expansion apparatus of claim 2, wherein: The number of the positioning mechanism is multiple, and the multiple positioning mechanisms are arranged in an up-down arrangement between the positioning upper die and the positioning lower die.

4. The heat exchanger tube expansion apparatus of claim 1, wherein: It also includes a lifting beam and a lifting drive member for driving the lifting beam to move upward and downward relative to the base, and the positioning upper die is installed on the lifting beam.

5. The heat exchanger tube expansion apparatus of claim 4, wherein: The lower end of the guide hole is provided with a flared cup, and the outer periphery of the flared cup is in the shape of a conical body with a wide upper part and a narrow lower part.

6. The heat exchanger tube expansion apparatus of claim 4, wherein: The base has a buckle part, the left and right sides of the lifting beam are each provided with a pressure maintaining member, the pressure maintaining member includes a hook and a pressure maintaining drive cylinder, one end of the hook is rotationally connected with the lifting beam, the other end has a hook part for buckling with the buckle part, and the pressure maintaining drive cylinder is used to drive the hook to rotate relative to the lifting beam.

7. The heat exchanger tube expansion apparatus of claim 6, wherein: The base is provided with a limiting block in the up-down direction, the limiting block is arranged on the lower side of the left and right ends of the lifting beam, and the buckle part is arranged on the limiting block.

8. The heat exchanger tube expansion apparatus of claim 4, wherein: The lower part of the base is provided with a positioning pin arranged upward, and the lifting beam has a pin sleeve aligned upward and downward with the positioning pin.

9. The heat exchanger tube expansion apparatus of claim 1, wherein: The positioning plate includes a base plate and two positioning members, the two positioning members are arranged in a left-right interval, and the two positioning members are adjustably connected with the base plate in the left-right direction.

10. The heat exchanger tube expansion apparatus of claim 9, wherein: One end of the pressing plate is rotationally connected with the positioning plate, and the other end is provided with a locking member for connecting with the base plate.

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