A spiral forming device for built-in coils in an air source heat pump heating water tank

Abstract

The present invention discloses a spiral forming device for a built-in coil for a gas source heat pump heating water tank, comprising a movable column mold, wherein the movable state of the column mold includes axial movement and circumferential rotation; a positioning groove having an angle with the central axis is provided on the cylindrical surface of the column mold, the positioning groove corresponds to the straight-through pipe formed into the spiral coil by molding, one end of the straight-through pipe is embedded in the positioning groove and is pressed and positioned by a pipe pressing member matching the positioning groove, so that the straight-through pipe is cross-connected with the column mold; when the column mold is in an active state, the corresponding axial movement state and circumferential rotation state are carried out synchronously to pull the straight-through pipe to spirally wind along the cylindrical surface to form a spiral coil. By setting a column mold cross-connected with the straight-through pipe, the present invention can pull the straight-through pipe to spirally wind along the cylindrical surface to form a spiral coil when the column mold is synchronously axially and circumferentially, without causing damage to the pipe surface such as clamping depressions, top pressure creases, etc., thereby improving the quality and precision of the spiral forming process of the coil.

Description

Technical Field

[0001] The invention belongs to the technical field of coil forming and processing, and in particular relates to a spiral forming device for a coil built into a gas source heat pump heating water tank. Background Art

[0002] The spiral coils within the gas-source heat pump heating tank are formed by bending straight-through pipes. During this bending process, the pipes require both clamping and pulling with a clamping mechanism and pressure during the pulling process to achieve the desired result. However, because the spiral coils are made of copper, the bending process can easily cause clamping depressions and pressure damage to the pipe surface, compromising the quality and precision of the spiral forming process. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a device for spirally forming a built-in coil for a gas source heat pump heating water tank. By setting a column mold cross-connected with the straight-through pipe, the straight-through pipe can be pulled to spirally wrap along the cylindrical surface to form a spiral coil when the column mold is synchronously axially and rotated. It will not cause damage to the pipe surface such as clamping depressions, top pressure creases, etc., thereby improving the quality and precision of the spiral forming process of the coil.

[0004] Technical solution: To achieve the above-mentioned purpose, the present invention provides a spiral forming device for a built-in coil in a gas source heat pump heating water tank, comprising a movably arranged column mold, the movable state of which includes axial movement and circumferential rotation; a positioning groove having an angle with the central axis is provided on the cylindrical surface of the column mold, the positioning groove corresponds to the straight-through pipe formed into a spiral coil, one end of the straight-through pipe is embedded in the positioning groove and is pressed into position by a pipe pressing part matching the positioning groove, so that the straight-through pipe is cross-connected to the column mold; when the column mold is in an active state, the corresponding axial movement state and circumferential rotation state are carried out synchronously to pull the straight-through pipe to spirally wind along the cylindrical surface to form a spiral coil.

[0005] Furthermore, it includes a material guide channel corresponding to the straight-through tube, the material guide channel is arranged toward the column mold, and the straight-through tube passes through the material guide cavity of the material guide channel to feed toward the column mold; the material guide channel has a micro-motion support, and the material guide channel is arranged on the forming machine frame through the micro-motion support; when the tube pressing member presses the tube end of the straight-through tube to position the tube end, the material guide channel follows the straight-through tube and moves downward micro-motion relative to the forming machine frame through the micro-motion support.

[0006] Furthermore, the micro-motion support includes a micro-motion shaft and a micro-motion elastic part, and the micro-motion shaft connected to the material guiding channel is micro-movement-coordinated with the elastic shaft of the forming frame through the elastic support of the micro-motion elastic part.

[0007] Furthermore, the pipe pressing part includes a pressing plate, which is provided with a locking pin that is movably plugged into the column mold; the pressing plate has a plug corresponding to the socket opened on the column mold, and the locking cavity of the locking pin is set through the socket from one axial end of the column mold, and the plug is provided with a locking hole corresponding to the locking pin; when the plug is inserted into the socket until the locking hole and the lock cavity are in a coaxial state, the pressing plate is locked relative to the column mold by inserting the locking pin into the lock hole.

[0008] Furthermore, it includes a material pressing drive mechanism for driving the pipe pressing member to perform the material pressing action and a lock drive mechanism for driving the lock pin to feed and lock; an elastic pressure sensor is provided in at least one of the jacks, and the lock drive mechanism is interlocked with the elastic pressure sensor through a matching control system;

[0009] The interlock triggering state is: the material pressing drive mechanism drives the pipe pressing part to move downward to perform the material pressing action, so that the plug is inserted into the jack. When the plug touches the elastic pressure sensor, the lock hole is exactly coaxial with the lock cavity. The control system that receives the pressure detection signal generates a locking action signal sent to the lock drive mechanism, and the lock drive mechanism drives the lock pin to feed and lock.

[0010] Furthermore, it includes an axial driving part and a turnover driving part corresponding to the column mold; the axial driving part installed on the forming machine frame is provided with a stand, and the stand is rotatably connected with a driving shaft that is coaxially fixed to the column mold, and the turnover driving part installed on the stand is connected to the driving shaft.

[0011] Furthermore, a push ring is provided on the column mold for axial sliding cooperation, and the push ring is arranged close to the axial end of the column mold where the drive shaft is located; a pushing mechanism corresponding to the push ring is provided on the stand; the pushing mechanism drives the push ring to move along the axis of the column mold to push the spiral coil to be demolded.

[0012] Furthermore, the pushing ring is an iron ring, and a magnetic ring is provided on the column mold. In the non-pushing state, the magnetic ring and the iron ring are integrated; the pushing mechanism includes a pushing drive part installed on the stand and a magnetic block connected to the driving end of the pushing drive part; in the pushing state, the pushing drive part drives the magnetic block to push the pushing ring to overcome the magnetic attraction force of the magnetic ring and move along the axis of the column mold to push the spiral coil to be demolded; when the pushing ring is reset, the magnetic block brings the pushing ring back to the position of the magnetic ring through the magnetic attraction force.

[0013] Beneficial effect: The present invention, through the arrangement of a column mold cross-connected with the straight-through pipe, can pull the straight-through pipe to spirally wrap along the cylindrical surface to form a spiral coil when the column mold is synchronized axially and circumferentially, without causing damage to the pipe surface such as clamping depressions, top pressure creases, etc., thereby improving the quality and precision of the spiral forming of the coil. After the straight-through pipe is pressed and positioned, the structural shape of the column mold itself is utilized, combined with its axial and circumferential movement, to bend the straight straight-through pipe into a spiral coil. There is no clamping damage to the pipe surface, nor is there any top pressure damage to the pipe surface. The bending forming processing method is simply to utilize the active column mold to pull and shape, which greatly improves the quality and precision of the spiral forming of the coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attachment Figure 1 It is a structural schematic diagram of the present invention in a straight-through pipe pressure positioning state;

[0015] Attachment Figure 2 This is a schematic structural diagram of the present invention when the straight-through pipe is not pressed and positioned;

[0016] Attachment Figure 3 This is a schematic diagram of the cross-section structure of the column mold in the straight-through pipe pressure positioning state;

[0017] Attachment Figure 4 This is a structural diagram of the spiral coil being pushed off the column mold. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] The spiral coils within the gas-source heat pump heating tank are formed by bending straight-through pipes. During this bending process, the pipes require both clamping and pulling with a clamping mechanism and pressure during the pulling process to achieve the desired result. However, because the spiral coils are made of copper, the bending process can easily cause clamping depressions and pressure damage to the pipe surface, compromising the quality and precision of the spiral forming process.

[0020] In order to solve the above problems, the technical solution proposed by the present invention is as shown in the attached Figure 1 and attached Figure 2As shown, a spiral forming device for a built-in coil in an air source heat pump heating water tank comprises a movable column mold 1, the movable states of the column mold 1 including axial movement and circumferential rotation; a positioning groove 10 having an angle with the central axis is provided on the cylindrical surface of the column mold 1, the positioning groove 10 corresponds to the straight-through pipe 2 formed and processed to form a spiral coil 3, one end of the straight-through pipe 2 is embedded in the positioning groove 10 and is pressed and positioned by a pipe pressing member 4 matching the positioning groove 10, so that the straight-through pipe 2 is cross-connected to the column mold 1; when the column mold 1 is in the movable state, the corresponding axial movement state and circumferential rotation state are carried out simultaneously to pull the straight-through pipe 2 to spirally wind along the cylindrical surface to form a spiral coil 3. The present invention sets a column mold 1 cross-connected with the straight-through pipe 2, so that the straight-through pipe 2 can be pulled to spirally wrap along the cylindrical surface to form a spiral coil 4 when the column mold 1 is synchronized axially and circumferentially, without causing damage to the pipe surface such as clamping depressions and top pressure creases, thereby improving the quality and precision of the spiral forming of the coil. More specifically, after the straight-through pipe 2 is pressed and positioned, the structural shape of the column mold 1 itself is utilized, combined with its axial and circumferential movement, to bend the straight straight-through pipe 2 into a spiral coil 4. There is no clamping damage to the pipe surface, nor is there any top pressure damage to the pipe surface. The bending forming processing method is simply to use the active column mold 1 to pull and shape, which greatly improves the quality and precision of the spiral forming of the coil.

[0021] As attached Figure 2 As shown, the present invention includes a material guide channel 8 corresponding to the straight tube 2, the material guide channel 8 is arranged toward the column mold 1, and the straight tube 2 passes through the material guide cavity of the material guide channel 8 to feed toward the column mold 1; the material guide channel 8 has a micro-motion support 9, and the material guide channel 8 is arranged on the forming machine frame 11 through the micro-motion support 9; when the tube pressing member 4 presses the tube end of the straight tube 2, the material guide channel 8 follows the straight tube 2 and moves downward relative to the forming machine frame 11 through the micro-motion support 9. When the straight tube 2 is pressed and positioned, it will have a small downward displacement. If the material guide channel 8 does not use micro-motion technology, the straight tube 2 will bend inconspicuously when pressed and positioned. This bending does not belong to the molding process and obviously affects the processing quality and precision. When the material guide channel 8 uses micro-motion technology, the tube body will not bend when pressed and positioned, ensuring the processing quality and precision.

[0022] More specifically, as Figure 2 As shown, the micro-motion support 9 includes a micro-motion shaft 91 and a micro-motion elastic portion 92. The micro-motion shaft 91, which is connected to the material guide channel 8, is elastically supported by the micro-motion elastic portion 92 and finely axially moves with the forming frame 11. The micro-motion elastic portion 92 is a spring whose ultimate elastic compression is slightly greater than the micro-displacement of the straight tube 2 when pressed into position, thereby preventing any impact on the material conveying of the straight tube 2.

[0023] As attached Figure 2 and attached Figure 3 As shown, the pipe pressing member 4 includes a pressing plate, which is provided with a locking pin 17 that is movably inserted into the column mold 1; the pressing plate has a plug 15 corresponding to the socket 16 opened on the column mold 1, and the locking cavity 21 of the locking pin 17 is set from one axial end of the column mold 1 through the socket 16, and the plug 15 is provided with a locking hole 150 corresponding to the locking pin 17; when the plug 15 is inserted into the socket 16 until the locking hole 150 and the locking cavity 21 are in a coaxial state, the locking pin 17 is inserted into the locking hole 150 to lock the pressing plate relative to the column mold 1, which not only presses the straight-through pipe 2 into position, but also locks the pressing plate that has a press-positioning function, thereby ensuring the stability of the press-positioning.

[0024] More specifically, the present invention includes a material pressing drive mechanism 5 that drives the pipe pressing member 4 to perform the material pressing action and a lock drive mechanism 18 that drives the lock pin 17 to feed and lock; an elastic pressure sensor 22 is provided in at least one of the sockets 16, and the lock drive mechanism 18 is interlocked with the elastic pressure sensor 22 through a matching control system; the interlock triggering state is: the material pressing drive mechanism 5 drives the pipe pressing member 4 to move downward to perform the material pressing action, so that the plug 15 is inserted into the socket 16, and when the plug 15 touches the elastic pressure sensor 22, the lock hole 150 is exactly coaxial with the lock cavity 21, and the control system that receives the pressure detection signal generates a locking action signal sent to the lock drive mechanism 18, and the lock drive mechanism 18 drives the lock pin 17 to feed and lock, thereby realizing automatic locking control. The pressing drive mechanism 5 includes a screw 52 and a guide rod 53 mounted on a support plate 51. The support plate 51 is fixedly connected to the shaft end of the column mold 1. The screw 52 is connected to a servo motor 55 mounted on the support plate 51. A movable plate 54 is provided to threadably engage the screw 52 and slideably engage the guide rod 53. The tube pressing member 4 is mounted on this movable plate 54. The lock drive mechanism 18 is an electric push rod mounted on the shaft end of the column mold 1.

[0025] The present invention includes an axial drive unit 7 and a rotational drive unit 6 corresponding to the column mold 1; the axial drive unit 7, mounted on the forming machine frame 11, is provided with a stand 14, and a drive shaft 20 is rotatably connected to the stand 14 and fixedly connected to the column mold 1. The rotational drive unit 6, mounted on the stand 14, is connected to the drive shaft 20. The axial drive unit 7 is a linear servo slide module, the stand 14 is mounted on the slider of the linear servo slide module, and the rotational drive unit 6 is a drive motor. The drive shaft 20 connected to the drive motor is connected to the support plate 51 of the pressing drive mechanism 5.

[0026] After the primary forming process of the active column mold 1, the spiral coil 4 is cut. Figure 4As shown, a push ring 12 is provided on the column mold 1 for axial sliding cooperation, and the push ring 12 is arranged close to the axial end of the column mold 1 where the drive shaft 20 is located; a push mechanism 13 corresponding to the push ring 12 is provided on the stand 14; the push mechanism 13 drives the push ring 12 to move along the axis of the column mold 1 to push the spiral coil 3 to be demolded. More specifically, the push ring 12 is an iron ring, and a magnetic ring 19 is provided on the column mold 1. In the non-pushing state, the magnetic ring 19 and the iron ring are magnetically attracted to form a whole; the pushing mechanism 13 includes a pushing drive part 132 installed on the stand 14 and a magnetic block 131 connected to the driving end of the pushing drive part 132; in the pushing state, the pushing drive part 132 drives the magnetic block 131 to push the pushing ring 12 to overcome the magnetic attraction of the magnetic ring 19 and move along the axis of the column mold 1 to push the spiral coil 3 to be demolded; when the pushing ring 12 is reset, the magnetic block 131 brings the pushing ring 12 back to the position of the magnetic ring 19 through the magnetic attraction. It will not have any impact on the molding operation, and can also realize the pushing and unloading operation when demolding is required. Among them, the outer diameter of the pushing ring 12 is larger than the outer diameter of the magnetic ring 19.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A spiral forming device for a built-in coil in a gas source heat pump heating water tank, characterized by: The invention comprises a column mold (1) that is movably arranged, wherein the movable state of the column mold (1) includes axial movement and circumferential rotation; a positioning groove (10) having an angle with the central axis is provided on the cylindrical surface of the column mold (1); the positioning groove (10) corresponds to a straight-through pipe (2) that is formed and processed to form a spiral coil (3); one end of the straight-through pipe (2) is embedded in the positioning groove (10) and is pressed and positioned by a pipe pressing member (4) that matches the positioning groove (10), so that the straight-through pipe (2) is cross-connected with the column mold (1); when the column mold (1) is in the movable state, the corresponding axial movement state and circumferential rotation state are carried out synchronously, so as to pull the straight-through pipe (2) to be spirally wound along the cylindrical surface to form a spiral coil (3); The invention comprises a material guide channel (8) corresponding to the straight-through tube (2), the material guide channel (8) being arranged toward the column mold (1), and the straight-through tube (2) passing through the material guide cavity of the material guide channel (8) to feed material toward the column mold (1); the material guide channel (8) has a micro-motion support (9), and the material guide channel (8) is arranged on a molding machine frame (11) through the micro-motion support (9); when the tube pressing member (4) presses and positions the tube end of the straight-through tube (2), the material guide channel (8) follows the straight-through tube (2) and moves downward micro-movement relative to the molding machine frame (11) through the micro-motion support (9); The pipe pressing member (4) includes a pressing plate, which is provided with a locking pin (17) that is movably plugged into the column mold (1); the pressing plate has a plug (15) corresponding to the socket (16) provided on the column mold (1); a locking cavity (21) of the locking pin (17) is provided from one axial end of the column mold (1) through the socket (16); a locking hole (150) corresponding to the locking pin (17) is provided on the plug (15); when the plug (15) is inserted into the socket (16) until the locking hole (150) and the locking cavity (21) are in a coaxial state, the pressing plate is locked relative to the column mold (1) by inserting the locking pin (17) into the locking hole (150); The invention comprises a material pressing drive mechanism (5) for driving a pipe pressing member (4) to perform a material pressing action and a lock drive mechanism (18) for driving a lock pin (17) to feed and lock; an elastic pressure sensor (22) is provided in at least one of the jacks (16); the lock drive mechanism (18) is interlocked with the elastic pressure sensor (22) through a matching control system; The interlock triggering state is: the material pressing driving mechanism (5) drives the pipe pressing member (4) to move downward to perform the material pressing action, so that the plug (15) is inserted into the jack (16); when the plug (15) contacts the elastic pressure sensor (22), the lock hole (150) is exactly coaxial with the lock cavity (21); the control system that receives the pressure detection signal generates a locking action signal sent to the lock driving mechanism (18), and the lock driving mechanism (18) drives the lock pin (17) to feed and lock.

2. The device for forming a built-in coil of a gas source heat pump heating water tank according to claim 1, characterized in that: The micro-motion support (9) comprises a micro-motion shaft (91) and a micro-motion elastic portion (92); the micro-motion shaft (91) connected to the material guide channel (8) is elastically supported by the micro-motion elastic portion (92) and is in micro-motion coordination with the elastic axis of the forming machine frame (11).

3. The device for forming a built-in coil of a gas source heat pump heating water tank according to claim 1, characterized in that: The invention comprises an axial drive unit (7) and a rotation drive unit (6) corresponding to the column mold (1); the axial drive unit (7) mounted on the forming machine frame (11) is provided with a stand (14); the stand (14) is rotatably connected to a drive shaft (20) coaxially fixedly connected to the column mold (1); and the rotation drive unit (6) mounted on the stand (14) is connected to the drive shaft (20).

4. The device for forming a built-in coil of a gas source heat pump heating water tank according to claim 3, characterized in that: A push ring (12) is provided on the column mold (1) in an axially sliding manner, and the push ring (12) is provided close to the axial end of the column mold (1) where the drive shaft (20) is located; a push mechanism (13) corresponding to the push ring (12) is provided on the stand (14); the push mechanism (13) drives the push ring (12) to move along the axis of the column mold (1) to push the spiral coil (3) to be demoulded.

5. The device for forming a built-in coil of a gas source heat pump heating water tank according to claim 4, characterized in that: The pushing ring (12) is an iron ring, and a magnetic ring (19) is provided on the column mold (1). In the non-pushing state, the magnetic ring (19) and the iron ring are magnetically attracted to form a whole; the pushing mechanism (13) comprises a pushing driving part (132) installed on the stand (14) and a magnetic block (131) connected to the driving end of the pushing driving part (132); in the pushing state, the pushing driving part (132) drives the magnetic block (131) to push the pushing ring (12) to overcome the magnetic attraction of the magnetic ring (19) and move along the axis of the column mold (1) to push the spiral coil (3) to be demoulded; when the pushing ring (12) is reset, the magnetic block (131) brings the pushing ring (12) back to the position of the magnetic ring (19) through the magnetic attraction.

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