A rotary expanding machine

Abstract

The present invention is applicable to the technical field of air-conditioning component manufacturing, and provides a rotary expanding machine, including a bearing platform, an expanding mechanism, a hopper mechanism, a pushing mechanism, and a clamping mechanism. The clamping mechanism includes a clamping platform, a right clamping die, a driving cylinder, a left clamping die, a barb, and a sheet metal support. The die openings of the left clamping die and the right clamping die are arranged opposite to each other, and the die opening positions are both provided with semicircular pipe grooves. Under the drive of the driving cylinder, the left clamping die moves to the right until it contacts the right clamping die. During this process, the sheet metal support moves down to prevent the sheet metal support from hitting the right clamping die, and the right clamping die has a through groove corresponding to the barb position, so that the barb can move into the through groove, and the connecting pipe is tightly fixed in the semicircular pipe grooves of the left and right clamping die. After the expanding mechanism expands the connecting pipe, the left clamping die retreats, and the barb is released at the same time, and the connecting pipe is unloaded by free fall. The left clamping die retreats to the initial position and the sheet metal support moves up to the initial position for the next round of feeding. The whole process has a good degree of automation, and no manual loading and unloading is required, which improves work efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of air conditioner component manufacturing, and in particular relates to a rotary expanding machine. Background Art

[0002] Air conditioning refrigerant connecting pipes are generally made of copper. One end of the connecting pipe needs to be expanded using a flaring machine. The existing flaring machine has a low degree of automation, including a clamping mold and a flaring mold. First, the clamping mold is opened, and the connecting pipe is manually placed between the clamping molds. Then the clamping mold is clamped, and the flaring mold is aligned with the connecting pipe. The flaring mold is driven by the driving device to push into one end of the connecting pipe, so that the end of the connecting pipe is expanded. Then the flaring mold is retracted, the clamping mold is separated, the connecting pipe is removed, and then the next connecting pipe is expanded. This operation method is inefficient and requires continuous manual intervention, which also increases the risk of operation. Summary of the invention

[0003] In view of the above problems, the object of the present invention is to provide a rotary belling machine, aiming to solve the technical problem of low degree of automation in the operation of existing belling machines.

[0004] The present invention adopts the following technical solution:

[0005] The rotary expanding machine comprises a bearing platform and a expanding mechanism, the bearing platform is provided with a hopper mechanism, a pushing mechanism and a clamping mechanism, the clamping mechanism comprises a clamping platform, a right clamping platform, and a driving cylinder for driving the clamping platform to move left and right, a left clamping platform is installed on the right side of the clamping platform, a barb that can be moved left and right is provided on the top of the clamping platform, a sheet metal support that can be moved up and down is also provided under the left clamping platform, the sheet metal support protrudes upward toward the die opening of the left clamping module to form a blocking position, the die openings of the left clamping module and the right clamping module are arranged opposite to each other, and the die openings are both provided with semicircular pipe grooves, the right clamping module is provided with a through groove at the position corresponding to the barb, and the expanding mechanism comprises a expanding die, and the expanding die is coaxial with the semicircular pipe groove of the right clamping module.

[0006] Furthermore, the pushing mechanism includes a pushing cylinder and an inclined blanking plate, a baffle is provided at the rear end of the blanking plate, a transmission block is provided at the end of the pushing cylinder, a pushing rod is fixed on the transmission block, and the pushing rod is attached to the inner side of the baffle.

[0007] Furthermore, the silo mechanism includes front and rear side plates, and the front and rear side plates have a first slope and a second slope inclined from left to right, the left side of the second slope is higher than the right side of the first slope, and the right sides of the first slope and the second slope are both provided with fine slits, a U-shaped frame is fixed to the bottom of the bearing platform, and vertical slide rails are provided on the left and right inner sides of the U-shaped frame, and vertical sliders are provided on the vertical slide rails, and a vertical plate is fixed on the vertical slider, and a row of vertical rods on the left and right are provided on the top of the vertical plate, and the vertical rods are inserted into the fine slits on the corresponding sides, and two lifting cylinders are also installed at the bottom of the U-shaped frame, and the ends of the lifting cylinders are connected to the vertical plates on the corresponding sides.

[0008] Furthermore, a material plate rod is provided between the front and rear side plates, and an intermediate plate which can move along the material plate rod is passed through the material plate rod.

[0009] Furthermore, the supporting platform is provided with a horizontal rail, and the clamping platform includes an n-type slider installed on the horizontal rail, a connecting seat located on the n-type slider, and a fixed block installed on the connecting seat, and a cylinder is provided on the fixed block, and the end of the cylinder is connected to the barb, and the left clamping die is located on the right side of the fixed block.

[0010] Furthermore, there is a circular hole on the sheet metal support, and a guide rod on the connecting seat, the guide rod is inserted into the circular hole, and a 7-type plate is fixed to the front side of the connecting seat. An electromagnet and a support spring are installed on the connecting seat and directly below the sheet metal support, and the top of the support spring supports the sheet metal support.

[0011] Furthermore, a stopper fixed on the bearing platform is provided directly in front of the left clamping die.

[0012] Furthermore, the expanding mechanism includes parallel rails, a slide is installed on the parallel rails, a rotating shaft and a rotating motor driving the rotating shaft to rotate are installed on the slide, the expanding die is installed on the top of the rotating shaft, and an expanding cylinder for driving the slide is also fixed to the bottom of the supporting platform.

[0013] Furthermore, the bearing platform is provided with a material discharge port located just below the right clamping die opening, and a discharge hopper is provided below the material discharge port.

[0014] The beneficial effects of the present invention are as follows: the present invention delivers the connecting tube to the semicircular tube groove of the left clamping die opening through the pushing mechanism, and at the same time the connecting tube is supported by the shielding position of the sheet metal support, and then the barb retreats to hook the connecting tube, so that the connecting tube will not separate from the semicircular tube groove of the left clamping die, and the left clamping die moves to the right under the drive of the driving cylinder until it contacts the right clamping die. During this process, the sheet metal support moves down to prevent the sheet metal support from colliding with the right clamping die, and the right clamping die is provided with a through groove at the corresponding barb position, so that the barb can move into the through groove, so that the connecting tube is tightly fixed in the semicircular tube grooves of the left and right clamping die, and after the expanding mechanism expands the connecting tube, the left clamping die retreats, and at the same time the barb is released, the connecting tube is unloaded by free fall, the left clamping die retreats to the initial position, and at the same time the sheet metal support moves up to the initial position for the next round of feeding, the whole process has a high degree of automation, no manual loading and unloading is required, and work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural diagram of a rotary expanding machine provided by an embodiment of the present invention;

[0016] Figure 2 is a structural diagram of a clamping mechanism provided by an embodiment of the present invention;

[0017] Figure 3 It is the position relationship diagram of the left clamp, sheet metal support, barb and right clamp;

[0018] Figure 4 is a structural diagram of a silo mechanism provided by an embodiment of the present invention;

[0019] Figure 5 This is the structural diagram of the silo mechanism without the front and rear side panels;

[0020] Figure 6 is a structural diagram of a sheet metal support provided by an embodiment of the present invention;

[0021] Figure 7 It is the schematic diagram of the sheet metal support moving up and down. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] In order to illustrate the technical solution of the present invention, a specific embodiment is provided below for illustration.

[0024] like Figure 1-3As shown, the rotary expanding machine provided in this embodiment includes a carrying platform 1 and a expanding mechanism 2, the carrying platform 1 is provided with a hopper mechanism 3, a pushing mechanism 4, and a clamping mechanism 5, the clamping mechanism 5 includes a clamping platform 51, a right clamping platform 52, and a driving cylinder 53 for driving the clamping platform 51 to move left and right, a left clamping platform 54 is installed on the right side of the clamping platform 51, a barb 55 that can be moved left and right is provided on the top of the clamping platform 51, and a sheet metal support 56 that can move up and down is also provided under the left clamping platform 54, the sheet metal support 56 protrudes upward toward the die opening of the left clamping module to form a blocking position 561, the die openings of the left clamping module 54 and the right clamping module 52 are arranged opposite to each other, and the die opening positions are both provided with semicircular pipe grooves, the right clamping module 52 has a through groove 521 at the position corresponding to the barb, and the expanding mechanism 2 includes a expanding die 21, and the expanding die 21 is coaxial with the semicircular pipe groove of the right clamping module 52. In addition, the carrying platform 1 is provided with a material discharge opening 11 just below the right clamping die opening, and a discharge hopper 12 is provided below the material discharge opening 11 .

[0025] The working process of this device is as follows:

[0026] The connecting tube is placed in the hopper mechanism, and the connecting tube is sent to the pushing mechanism one by one through the hopper mechanism. The pushing mechanism sends the connecting tube to the semicircular tube groove of the left clamping die. Because there is a sheet metal support blocking position below the left clamping die, the connecting tube is supported by the sheet metal support blocking position during the pushing process and will not be separated from the semicircular tube groove. After being pushed into place, the barb retracts to hook the connecting tube, so that the connecting tube is firmly clamped and will not be separated from the semicircular tube groove of the left clamp. Driven by the driving cylinder, the left clamp moves to the right until it contacts the right clamp. During this process, the sheet metal support moves down to prevent the sheet metal support from hitting the right clamp, and the right clamp has a through groove corresponding to the barb position, so that the barb can move into the through groove to avoid colliding with the right clamp. The connecting tube is tightly fixed in the semicircular tube grooves of the left and right clamps, and the expanding mechanism pushes forward to expand the connecting tube. After the expansion is completed, the left clamp retreats and the barb is released, and the connecting tube is unloaded by free fall. Since the sheet metal support is a certain distance away from the connecting tube, during the free fall of the connecting tube, the connecting tube has not reached the position of the sheet metal support, and the sheet metal support has retreated together with the left clamp. Therefore, in the actual processing process, the free fall of the connecting tube will not touch the sheet metal support at all. The left clamp retreats to the initial position and the sheet metal support moves up to the initial position for the next round of feeding. The whole process has a high degree of automation. After the expansion, the connecting tube falls into the unloading hopper through the drop opening. There is no need for manual loading and unloading, which improves work efficiency.

[0027] In this device, the pushing mechanism is used to push the connecting tube to the semicircular tube groove of the left clamping die. As a specific structure of the pushing mechanism, the pushing mechanism 4 includes a pushing cylinder 41, an obliquely arranged blanking plate 42, a baffle 43 at the tail end of the blanking plate 42, a transmission block 44 at the end of the pushing cylinder 41, a pushing rod 45 fixed on the transmission block 44, and the pushing rod 45 is attached to the inner side of the baffle 43. The connecting tube slides from the silo mechanism to the blanking plate until it contacts the baffle, and the pushing cylinder drives the pushing rod forward, and the pushing rod pushes the connecting tube forward until it moves to the semicircular groove position of the left clamping die. In order to prevent the pushing rod from pushing the connecting tube too long, a stopper 13 fixed on the bearing platform is also provided in front of the left clamping die 54, and the front end of the connecting tube stops when it contacts the stopper.

[0028] As a specific structure of the silo mechanism, combined with Figure 4 , 5 As shown, the silo mechanism 3 includes front and rear side plates 31, and the front and rear side plates 31 have a first slope 32 and a second slope 33 inclined from left to right, the left side of the second slope 33 is higher than the right side of the first slope 32, and the right side of the first slope 32 and the right side of the second slope 33 are both provided with a slit 34, a U-shaped frame 6 is fixed to the bottom of the carrying platform 1, and vertical slide rails 61 are provided on the left and right inner sides of the U-shaped frame 6, a vertical slider 62 is provided on the vertical slide rail 61, and a vertical plate 63 is fixed on the vertical slider 62, a left and right row of vertical rods 64 are provided on the top of the vertical plate 63, and the vertical rods 64 are inserted into the slits 34 on the corresponding sides, and two lifting cylinders 65 are also installed at the bottom of the U-shaped frame 6, and the ends of the lifting cylinders 65 are connected to the vertical plates 63 on the corresponding sides. The connecting tube is placed on the first slope, and the width of the slit is slightly smaller than the diameter of the connecting tube. A row of vertical rods at the slit on the right side of the first slope pushes the connecting tube upward. When it reaches the highest point, the connecting tube slides down along the second slope to the slit position on the right side. A row of vertical rods at the slit position pushes the connecting tube upward. When it reaches the highest point, the connecting tube slides directly to the blanking plate until the baffle, and the subsequent pushing rod pushes the connecting tube. If only one slope is set, when there are too many connecting tubes in the slope, multiple connecting tubes may be pushed to the blanking plate at the same time, and a single tube cannot be loaded. In this structure, two-level slopes are set, and connecting tubes can be placed in batches in the first slope. Even if two or more connecting tubes are pushed to the second slope by accident, only one connecting tube will be pushed to the blanking plate in the second slope, and the machine operation will not be interrupted. In addition, a material plate rod 35 is also set between the front and rear side plates 31, and the material plate rod 35 is penetrated with an intermediate plate 36 that can move along the material plate rod. The connecting pipe is only placed on one side of the middle plate. The width of the front side plate and the middle plate is the width of the connecting pipe. For connecting pipes of other sizes, the position of the middle plate can be adjusted to make adaptive adjustments.

[0029] In this structure, the flaring mechanism 2 includes a parallel rail 22, a slide 23 is installed on the parallel rail 22, a rotating shaft 24 and a rotating motor 25 for driving the rotating shaft to rotate are installed on the slide 23, the flaring die 21 is installed on the top of the rotating shaft 24, and a flaring cylinder 26 for driving the slide is also fixed at the bottom of the carrying platform 1. The rotating motor drives the rotating shaft to rotate, and then drives the flaring die to rotate, which is more conducive to the flaring die being screwed into the port of the connecting pipe, and conveniently realizing flaring.

[0030] In this embodiment, the carrying platform 1 is provided with a horizontal rail 57, and the clamping platform 51 includes an n-shaped slider 511 installed on the horizontal rail, a connecting seat 512 located on the n-shaped slider, and a fixed block 513 installed on the connecting seat. The fixed block 513 has a cylinder 58, and the end of the cylinder 58 is connected to the barb 55. The left clamping mold 54 is located on the right side of the fixed block 513. The cylinder pushes the barb to move left and right, and the fixed block is located on the left side of the clamping mold to provide support for the clamping mold. Figure 6 , 7 As shown, the sheet metal support 56 has a round hole 562, the connecting seat 512 has a guide rod 517, the guide rod 517 penetrates the round hole 562, and the front side of the connecting seat 512 is also fixed with a 7-type plate 514. The electromagnet 515 and the support spring 516 are installed on the connecting seat 512 and directly below the sheet metal support, and the top of the support spring 516 supports the sheet metal support 56. When the electromagnet is energized, the sheet metal support is adsorbed and moves downward, and when the battery iron is de-energized, the sheet metal support moves upward under the action of the spring, and the guide rod plays a guiding role in the up and down movement of the sheet metal support.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary expanding machine, comprising a carrying platform and an expanding mechanism, characterized in that: The carrying platform is provided with a hopper mechanism, a pushing mechanism and a clamping mechanism, the clamping mechanism includes a clamping platform, a right clamping platform, and a driving cylinder for driving the clamping platform to move left and right, a left clamping platform is installed on the right side of the clamping platform, a barb that can move left and right is provided on the top of the clamping platform, and a sheet metal support that can move up and down is also provided under the left clamping platform, the sheet metal support protrudes upward toward one side of the die opening of the left clamping platform to form a blocking position, the die openings of the left and right clamping platforms are arranged opposite to each other, and the die opening positions are both provided with semicircular pipe grooves, the right clamping platform is provided with a through groove at the position corresponding to the barb, and the expanding mechanism includes an expanding die, and the expanding die is coaxial with the semicircular pipe groove of the right clamping die; The bearing platform is provided with a horizontal rail, the clamping die table comprises an n-shaped slider mounted on the horizontal rail, a connecting seat located on the n-shaped slider, a fixed block mounted on the connecting seat, a cylinder is provided on the fixed block, the end of the cylinder is connected to the barb, and the left clamping die is located on the right side of the fixed block; The sheet metal support is provided with a circular hole, the connecting seat is provided with a guide rod, the guide rod is inserted into the circular hole, a 7-type plate is also fixed to the front side of the connecting seat, an electromagnet and a support spring are installed on the connecting seat and directly below the sheet metal support, and the top of the support spring supports the sheet metal support.

2. The rotary expanding machine according to claim 1, characterized in that: The pushing mechanism comprises a pushing cylinder and an inclined blanking plate, a baffle is provided at the rear end of the blanking plate, a transmission block is provided at the end of the pushing cylinder, a pushing rod is fixed on the transmission block, and the pushing rod is attached to the inner side of the baffle.

3. The rotary expanding machine according to claim 1, characterized in that: The silo mechanism includes front and rear side plates, and the front and rear side plates have a first slope and a second slope inclined from left to right, the left side of the second slope is higher than the right side of the first slope, and the right sides of the first slope and the second slope are both provided with fine slits, a U-shaped frame is fixed to the bottom of the bearing platform, and vertical slide rails are provided on the left and right inner sides of the U-shaped frame, and vertical sliders are provided on the vertical slide rails, and a vertical plate is fixed on the vertical slider, and a row of left and right vertical rods are provided on the top of the vertical plate, and the vertical rods are inserted into the fine slits on the corresponding sides, and two lifting cylinders are also installed at the bottom of the U-shaped frame, and the ends of the lifting cylinders are connected to the vertical plates on the corresponding sides.

4. The rotary expanding machine according to claim 3, characterized in that: A material plate rod is also arranged between the front and rear side plates, and an intermediate plate which can move along the material plate rod is passed through the material plate rod.

5. The rotary expanding machine according to claim 1, characterized in that: A stopper fixed on the bearing platform is also provided in front of the left clamping die.

6. The rotary expanding machine according to claim 1, characterized in that: The expanding mechanism includes parallel rails, a slide is installed on the parallel rails, a rotating shaft and a rotating motor driving the rotating shaft are installed on the slide, the expanding die is installed on the top of the rotating shaft, and an expanding cylinder for driving the slide is also fixed at the bottom of the supporting platform.

7. The rotary expanding machine according to any one of claims 1 to 6, characterized in that: The bearing platform is provided with a material discharge opening located just below the right clamping die opening, and a discharge hopper is arranged below the material discharge opening.

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