Evaporation coil end necking device

Abstract

The utility model relates to an evaporation coil end necking device, and belongs to the technical field of evaporator machining, the evaporation coil end necking device comprises a box body, a clamping mechanism and a necking mechanism, the clamping mechanism and the necking mechanism are arranged in the box body, a feeding hole is formed in the side wall of the box body, and the clamping mechanism is arranged beside the feeding hole and used for clamping an evaporation coil; the necking mechanism comprises a necking assembly, a motor and a pneumatic rotating joint, the necking assembly is rotationally installed in the box body, one end of the pneumatic rotating joint is fixed in the box body, the necking assembly, the pneumatic rotating joint and the feeding hole are coaxially arranged, the motor is fixed in the box body, and the pneumatic rotating joint is fixed in the box body. And the driving assembly is used for driving the necking assembly to rotate. When the necking device is used, only one end of the coil needs to be inserted along the feeding hole, the clamping air cylinder and the necking assembly are controlled by the follow-up single-chip microcomputer controller to work, the extrusion roller on the sliding block gradually gets close to the coil and rotates around the coil, the horizontal section and the frustum section of the extrusion roller are pressed on the coil, and the necking action can be completed.

Description

Technical Field

[0001] The present application relates to the technical field of evaporator processing, and in particular to a necking device for the end of an evaporator coil. Background Art

[0002] Existing refrigerator evaporators are basically round tubes with fins, wire tubes, inflation type, plate tubes or microchannel structures, and a small section of copper pipe joints are welded and fixed at both ends of the round tube. This structure is for subsequent connection of the refrigerator evaporator. The copper pipe joints are connected to other parts by flame welding. Since the copper pipe joints and the round tubes are also fixed by flame welding, there is a potential risk of leakage as long as there are welding points. At the same time, the cost of using copper pipe joints is also high.

[0003] With the development of technology, the subsequent connection of the refrigerator evaporator can now be done through ring welding, without the need for flame welding of copper pipe joints.

[0004] In order to reduce production costs and reduce the risk of welding point leakage, our company has developed a new type of evaporation coil 01, such as Figure 1 As shown, the end portion is an integrally formed constriction.

[0005] Therefore, in order to adapt to the production and manufacturing of this type of evaporator, it is urgent to develop a shrinking device with good shrinking effect and high production efficiency. Utility Model Content

[0006] The purpose of the present application is to provide a necking device for the end of an evaporating coil to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above purpose, the present application provides an evaporator coil end necking device using the following technical solution:

[0008] An evaporating coil end shrinking device comprises a box body, a clamping mechanism and a shrinking mechanism arranged in the box body, a feeding hole is opened on the side wall of the box body, and the clamping mechanism is arranged beside the feeding hole and is used to clamp the evaporating coil;

[0009] The necking mechanism comprises a necking component, a motor and a pneumatic rotary joint, wherein the necking component is rotatably mounted in the box, one end of the pneumatic rotary joint is fixed in the box, and the necking component, the pneumatic rotary joint and the feed hole are coaxially arranged, and the motor is fixed in the box and is used to drive the necking component to rotate;

[0010] The necking assembly includes a cylinder rotatably connected in the housing, one end of the cylinder is fixed to the pneumatic rotary joint, a piston chamber and a transmission chamber are arranged in the cylinder, a plurality of guide grooves are evenly arranged in an annular manner at the end of the transmission chamber, a slider is slidably connected in the guide groove, a side of the slider away from the transmission chamber is detachably and rotatably connected to an extrusion roller, a piston is movably connected in the piston chamber, a transmission rod connected to the transmission chamber is fixed on one side of the piston, a plurality of connecting rods are hinged on the transmission rod, and one end of the connecting rod is hinged to the slider.

[0011] The box body comprises a bottom plate and a top cover fixed on the bottom plate, and the feed hole is arranged on the top cover.

[0012] The clamping mechanism includes a clamping cylinder and a clamping block. The clamping block is fixed on the box body and arranged next to the feed hole. The clamping cylinder is also fixed on the box body. A pressure block corresponding to the clamping block is fixed at the end of the output rod of the clamping cylinder. The clamping block and the surface of the pressure block are both provided with notches.

[0013] The extrusion roller includes a horizontal section and a frustum section, one end of the large circle of the frustum section is fixed to the horizontal section, and the diameter of the large circle of the frustum section is the same as the diameter of the horizontal section, and the connection between the frustum section and the horizontal section is a smooth transition.

[0014] Preferably, in order to facilitate replacement of the squeezing roller, an insertion rod is fixed on the sliding block, the squeezing roller is rotatably sleeved on the insertion rod, and a locking nut is connected to the end of the insertion rod.

[0015] A gear is fixed on the surface of the cylinder, and the motor drives the cylinder to rotate via the gear.

[0016] Preferably, in order to improve automated control, a single-chip microcomputer controller and a cylinder control valve connected to a pneumatic rotary joint are also provided in the box, and the clamping cylinder and the cylinder control valve are both electrically connected to the single-chip microcomputer controller.

[0017] To summarize, the present application includes at least one of the following beneficial technical effects: the shrinking device at the end of the evaporator coil has a novel and compact structure, is easy to manufacture, and is relatively convenient to use. The staff only needs to insert one end of the coil along the feed hole, and the subsequent single-chip microcomputer controller controls the clamping cylinder and the shrinking assembly to work, so that the extrusion roller on the slider gradually approaches the coil and rotates around the coil. The horizontal section and the conical section of the extrusion roller are pressed on the coil to complete the shrinking action. The operation is simple and the production efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram used to reflect the evaporator coil in the related art.

[0019] Figure 2It is a schematic diagram of the overall structure of an embodiment of the present application.

[0020] Figure 3 It is a schematic diagram of the structure of the top cover in the embodiment of the present application.

[0021] Figure 4 It is a schematic diagram of the internal structure in the embodiment of the present application when the top cover is hidden.

[0022] Figure 5 It is a structural schematic diagram used to reflect the necking component in the embodiment of the present application.

[0023] Figure 6 It is a schematic diagram of the cross-sectional structure used to illustrate the necking component in the embodiment of the present application.

[0024] Figure 7 It is a schematic diagram of the structure of the squeezing roller in the embodiment of the present application.

[0025] Explanation of the reference numerals in the accompanying drawings: 11. bottom plate; 12. top cover; 121. feed hole; 2. clamping cylinder; 21. pressure block; 3. clamping block; 4. necking assembly; 41. cylinder barrel; 411. piston chamber; 412. transmission chamber; 42. guide groove; 43. slider; 44. extrusion roller; 441. horizontal section; 442. frustum section; 45. piston; 46. transmission rod; 47. connecting rod; 5. motor; 6. pneumatic rotary joint; 7. insert rod; 8. anti-loosening nut; 9. gear. DETAILED DESCRIPTION

[0026] The following is combined with Figure 2-7 This application is described in further detail.

[0027] The present application discloses a device for shrinking the end of an evaporating coil, referring to Figure 2-7 , including a box body, a clamping mechanism and a shrinking mechanism arranged in the box body, a feed hole 121 is opened on the side wall of the box body, the box body includes a bottom plate 11 and a top cover 12 fixed on the bottom plate 11, the feed hole 121 is opened on the top cover 12, the clamping mechanism is arranged beside the feed hole 121 and is used to clamp the evaporating coil, the clamping mechanism includes a clamping cylinder 2 and a clamping block 3, the clamping block 3 is fixed on the box body and arranged beside the feed hole 121, the clamping cylinder 2 is also fixed on the box body, and a pressing block 21 corresponding to the clamping block 3 is fixed on the end of the output rod of the clamping cylinder 2, and the surfaces of the clamping block 3 and the pressing block 21 are both provided with notches, which are adapted to the coil;

[0028] The necking mechanism includes a necking component 4, a motor 5 and a pneumatic rotary joint 6. The necking component 4 is rotatably mounted in the box, one end of the pneumatic rotary joint 6 is fixed in the box, and the necking component 4, the pneumatic rotary joint 6 and the feed hole 121 are coaxially arranged. The motor 5 is fixed in the box and is used to drive the necking component 4 to rotate.

[0029] The shrinking assembly 4 includes a cylinder 41 rotatably connected in the housing, one end of the cylinder 41 is fixed to the pneumatic rotary joint 6, a piston chamber 411 and a transmission chamber 412 are arranged in the cylinder 41, a plurality of guide grooves 42 are evenly arranged in an annular shape at the end of the transmission chamber 412, a slider 43 is slidably connected in the guide groove 42, a side of the slider 43 away from the transmission chamber 412 is detachably and rotatably connected to an extrusion roller 44, the extrusion roller 44 includes a horizontal section 441 and a frustum section 442, one end of the large circle of the frustum section 442 is fixed to the horizontal section 441, and the diameter of the large circle of the frustum section 442 is the same as the diameter of the horizontal section 441, and the connection between the frustum section 442 and the horizontal section 441 is a smooth transition, a piston 45 is movably connected in the piston chamber 411, a transmission rod 46 connected to the transmission chamber 412 is fixed on one side of the piston 45, a plurality of connecting rods 47 are hinged on the transmission rod 46, and one end of the connecting rod 47 is hinged to the slider 43;

[0030] When the gas pushes the piston 45 to move toward the side away from the transmission chamber 412, the piston 45 pulls the transmission rod 46. The end of the transmission rod 46 controls the axial movement of the connecting rod 47. The other end of the connecting rod 47 is converted into radial movement of the slider 43, which can make the slider 43 move toward the middle. Conversely, when the gas pushes the piston 45 to move toward one side of the transmission chamber 412, the slider 43 can spread outward.

[0031] A single-chip microcomputer controller and a cylinder control valve connected to the pneumatic rotary joint 6 are also provided in the box (both the single-chip microcomputer controller and the cylinder control valve are shown in the figure), and the clamping cylinder and the cylinder control valve are both electrically connected to the single-chip microcomputer controller.

[0032] Reference Figure 6 and Figure 7 In order to facilitate the replacement of the squeezing roller 44, a plug rod 7 is fixed on the slider 43, and the squeezing roller 44 is rotatably sleeved on the plug rod 7. The end of the plug rod 7 is connected with a lock nut 8. In order to ensure the stable rotation of the squeezing roller 44, slewing bearings are installed at both ends of the squeezing roller 44.

[0033] Reference Figure 4 A gear 9 is fixed on the surface of the cylinder 41, and the motor 5 drives the cylinder 41 to rotate via the gear 9 (the motor 5 does not stop), and the transmission effect of the gear 9 is better.

[0034] The implementation principle of the evaporator coil end necking device in the embodiment of the present application is as follows:

[0035] The staff inserts one end of the coil along the feed hole 121, and the single-chip controller controls the clamping cylinder to work. The clamping cylinder drives the pressure block 21 to clamp the coil on the clamping block 3. After that, the cylinder control valve controls the gas to enter the piston chamber 411 and pushes the piston 45 to move to the side away from the transmission chamber 412. The piston 45 pulls the transmission rod 46, and the end of the transmission rod 46 controls the axial movement of the connecting rod 47. The other end of the connecting rod 47 is converted into radial movement of the slider 43 (the principle is similar to that of a chuck). During this process, the squeezing roller 44 on the slider 43 gradually approaches the coil and rotates around the coil. The horizontal section 441 and the conical section 442 of the squeezing roller 44 are pressed on the coil to complete the shrinking action.

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, principle and application direction of the present application should be included in the protection scope of the present application.

Claims

1. An evaporator coil end necking device, characterized in that: It comprises a box body, a clamping mechanism and a shrinking mechanism arranged in the box body, a side wall of the box body is provided with a feed hole (121), and the clamping mechanism is arranged beside the feed hole (121) and is used to clamp the evaporation coil. The necking mechanism comprises a necking component (4), a motor (5) and a pneumatic rotary joint (6); the necking component (4) is rotatably mounted in the housing; one end of the pneumatic rotary joint (6) is fixed in the housing; the necking component (4), the pneumatic rotary joint (6) and the feed hole (121) are coaxially arranged; the motor (5) is fixed in the housing and is used to drive the necking component (4) to rotate. The shrinking assembly (4) comprises a cylinder (41) rotatably connected in the housing, one end of the cylinder (41) is fixed to the pneumatic rotary joint (6), a piston chamber (411) and a transmission chamber (412) are arranged in the cylinder (41), a plurality of guide grooves (42) are evenly arranged in an annular shape at the end of the transmission chamber (412), a slider (43) is slidably connected in the guide groove (42), a side of the slider (43) away from the transmission chamber (412) is detachably rotatably connected to a squeezing roller (44), a piston (45) is movably connected in the piston chamber (411), a transmission rod (46) connected to the transmission chamber (412) is fixed to one side of the piston (45), a plurality of connecting rods (47) are hinged to the transmission rod (46), one end of the connecting rod (47) is hinged to the slider (43).

2. The evaporator coil end necking device according to claim 1, characterized in that: The box body comprises a bottom plate (11) and a top cover (12) fixed on the bottom plate (11), and the feed hole (121) is opened on the top cover (12).

3. The evaporator coil end necking device according to claim 1, characterized in that: The clamping mechanism comprises a clamping cylinder (2) and a clamping block (3); the clamping block (3) is fixed on the box body and arranged beside the feed hole (121); the clamping cylinder (2) is also fixed on the box body; a pressing block (21) corresponding to the clamping block (3) is fixed on the end of the output rod of the clamping cylinder (2); and recesses are provided on the surfaces of the clamping block (3) and the pressing block (21).

4. The evaporator coil end necking device according to claim 1, characterized in that: The squeezing roller (44) comprises a horizontal section (441) and a frustum section (442); one end of the large circle of the frustum section (442) is fixed to the horizontal section (441); the diameter of the large circle of the frustum section (442) is the same as the diameter of the horizontal section (441); and the connection between the frustum section (442) and the horizontal section (441) is a smooth transition.

5. The evaporator coil end necking device according to claim 4, characterized in that: An insertion rod (7) is fixed on the slider (43), the squeezing roller (44) is rotatably sleeved on the insertion rod (7), and a locking nut (8) is connected to the end of the insertion rod (7).

6. The evaporator coil end necking device according to claim 1, characterized in that: A gear (9) is fixed on the surface of the cylinder (41), and the motor (5) drives the cylinder (41) to rotate via the gear (9).

7. The evaporator coil end necking device according to claim 3, characterized in that: A single-chip microcomputer controller and a cylinder control valve connected to a pneumatic rotary joint (6) are also provided in the box, and the clamping cylinder (2) and the cylinder control valve are both electrically connected to the single-chip microcomputer controller.

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