Nail pulling machine for heat exchanger tube plate injection molding

Abstract

The utility model discloses a heat exchanger tube plate injection molding nail pulling machine which comprises a base, a machining table top, a first moving assembly, a second moving assembly and a pulling assembly, the machining table top is fixedly arranged at the top of the base, the first moving assembly is installed on the machining table top, and the second moving assembly is installed on the first moving assembly. The pulling assembly is installed on the second moving assembly, the first moving assembly drives the pulling assembly to move on the machining table face along the X axis, and the second moving assembly drives the pulling assembly to move on the machining table face along the Y axis. The utility model aims to provide the nail pulling machine for the injection molding of the heat exchanger tube plate, which has the advantages of high production efficiency, reduced labor capacity, small damage to the tube plate and reusable core nails.

Description

Technical Field

[0001] The utility model relates to the field of chemical machinery and equipment, and more particularly to a heat exchanger tube sheet injection molding nail pulling machine. Background Art

[0002] A heat exchanger is an energy-saving device that transfers heat between two or more fluids at different temperatures. It transfers heat from a higher-temperature fluid to a lower-temperature fluid, bringing the fluid temperature to the specified process temperature to meet process requirements. It is also a key device for improving energy efficiency. The heat exchanger industry is used in nearly 30 industries, including HVAC, pressure vessels, reclaimed water treatment equipment, chemicals, and petroleum.

[0003] For enameled tube heat exchangers or silicon carbide heat exchangers, tube sheets need to be installed at both ends of the tube body and several small holes are opened on the tube sheets. Seals are installed in the small holes to connect with the enameled tubes or silicon carbide tubes. Because tantalum alloy tube sheets have good corrosion resistance but are expensive, PTFE tube sheets are easily deformed under pressure and have poor sealing. As a result, the patent number 202020604052.0 was developed, and the patent name is reinforced composite tube sheet. The main structure is steel inside and PTFE injection molding outside, which can meet both strength and corrosion requirements.

[0004] During the production process of the above-mentioned tube sheet, a core nail needs to be placed in the mounting hole to prevent the injection-molded PTFE from closing the entire mounting hole. The core nail is then removed and the mounting hole is processed.

[0005] Due to the small market, the current existing technology still uses manual labor to remove the core nail. Since the PTFE shrinks and holds the core nail tightly, it is difficult to remove it. The core nail is shaken by hard hammering, which causes damage to the PTFE coating and the core nail. Utility Model Content

[0006] In order to solve the above problems, the purpose of the utility model is to provide a heat exchanger tube sheet injection nail removal machine with high production efficiency, reduced labor, little damage to the tube sheet, and reusable core nails.

[0007] According to one aspect of the present utility model, there is provided a heat exchanger tube sheet injection molding nail pulling machine, which includes: a base, a processing table, a first moving component, a second moving component and a pulling component. The top of the base is fixedly provided with the processing table. The first moving component is installed on the processing table. The second moving component is installed on the first moving component. The pulling component is installed on the second moving component. The first moving component drives the pulling component to move along the X-axis on the processing table, and the second moving component drives the pulling component to move along the Y-axis on the processing table. A relatively flat processing surface is provided for the tube sheet through the processing table. The first moving component and the second moving component drive the pulling component to move to any position on the processing table, and then the core nails are pulled out.

[0008] In some embodiments, the first moving component includes: two first linear guides, a first slider, a first rack, a first gear, a first motor and a first mounting seat. The two first linear guides are parallelly installed on both sides of the processing table. The first slider is sleeved on the first linear guide. The first rack is installed on the processing table and is arranged parallel to the first linear guide. There are two first mounting seats and they are fixedly connected to the first slider. The first motor is fixed on the first mounting seat. The output end of the first motor is connected to the first gear, and the first gear meshes with the first rack. The first motor drives the first gear to mesh with the first rack, thereby realizing the reciprocating movement of the first mounting seat on the first linear guide, and further realizing the movement of the pulling component along the X-axis on the processing table.

[0009] In some embodiments, the second moving component includes: a cross beam, two second linear guides, a second slider, a second rack, a second gear, a second motor and a second mounting seat. The two second linear guides are parallelly installed on the top of the cross beam. The second slider is sleeved on the second linear guide. The second rack is installed on the top of the cross beam and is arranged parallel to the second linear guide. The second mounting seat is fixedly connected to the second slider. The second motor is fixed on the second mounting seat. The output end of the second motor is connected to the second gear, and the second gear meshes with the second rack. The end of the cross beam is fixedly connected to the top of the first mounting seat. The second motor drives the second gear to mesh with the second rack, thereby realizing the reciprocating movement of the second mounting seat on the second linear guide, and further realizing the movement of the pulling component along the Y-axis on the processing table.

[0010] In some embodiments, the pulling component includes: a pressing part and a pulling-up part. The pressing part is fixedly arranged on one side of the second mounting seat, and the pulling-up part is installed on the pressing part. The pressing part realizes the up and down movement of the pulling-up part on the processing table to approach the tube sheet to a suitable height.

[0011] In some embodiments, the pressing portion includes a driving cylinder, a third linear rail, a third slider, a sliding plate, and a clamping block. The third slider is vertically mounted on the second mounting seat, the third linear rail is vertically mounted on the sliding plate, the third slider is sleeved on the third linear rail, and the sliding plate is mounted with the clamping block. The driving cylinder drives the sliding plate up and down, and the clamping block is used to mount the electric cylinder.

[0012] In some embodiments, the lifting unit includes a bracket, a third motor, an electric cylinder, a pressure block, and a clamping jaw. The bracket is mounted above the clamping block, the third motor is fixed to the bracket, the electric cylinder is fixedly connected to the clamping block, the pressure block is mounted on the bottom of the electric cylinder, the output end of the electric cylinder extends out of the pressure block, and the clamping jaw is fixed to the output end of the electric cylinder. The pressure block presses against the upper surface of the tube sheet, and the clamping jaw secures the core nail in the mounting hole. Simultaneously, the third motor drives the electric cylinder to lift the output end, thereby extracting the core nail from the mounting hole.

[0013] In some embodiments, the clamp is a pneumatic clamp, which facilitates the top fixation of the core nail.

[0014] In some embodiments, a material discharge port is provided on the processing table, and a channel is provided at the bottom of the material discharge port to communicate with the material receiving frame. The material discharge port and the channel facilitate collection of the extracted core nails for reuse.

[0015] The utility model discloses a heat exchanger tube sheet injection nail pulling machine, which has the beneficial effects of high production efficiency, reduced labor, little damage to the tube sheet, and reusable core nails. The processing table provides a relatively flat processing surface for the tube sheet, and the first moving assembly and the second moving assembly drive the extraction assembly to move to any position on the processing table to extract the core nail; the first motor drives the first gear to engage with the first rack to realize the reciprocating movement of the first mounting seat on the first linear rail, thereby realizing the movement of the extraction assembly along the X-axis on the processing table; the second motor drives the second gear to engage with the second rack to realize the reciprocating movement of the second mounting seat on the second linear rail, thereby realizing the movement of the extraction assembly along the Y-axis on the processing table; the lower pressing part enables the upper extraction part to move up and down on the processing table to approach the tube sheet to a suitable height; the sliding plate is driven up and down by the cylinder, and the electric cylinder is installed by the clamping block; the pressure block is pressed against the upper surface of the tube sheet, and the core nail in the mounting hole is fixed by the clamping claw, while the third motor drives the electric cylinder to lift the output end to extract the core nail from the mounting hole; the pneumatic clamp is used to facilitate the fixation of the top of the core nail; the discharge port and the channel facilitate the collection of the extracted core nail for reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of the utility model of a heat exchanger tube sheet injection molding nail removal machine;

[0017] Figure 2 It is a schematic structural diagram of the extraction component of the injection-molding nail extractor for the tube sheet of the heat exchanger of the present utility model;

[0018] Figure 3 It is a sectional view of the extraction component of the injection-molding nail extractor for the tube sheet of the heat exchanger of the present utility model. Specific embodiments

[0019] The present utility model will be described in detail below in conjunction with the various embodiments shown in the drawings. It should be noted, however, that these embodiments are not intended to limit the present utility model. Any equivalent transformation or substitution in terms of function, method, or structure made by those of ordinary skill in the art based on these embodiments shall fall within the protection scope of the present utility model.

[0020] In the description of the present utility model, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the communication inside two components. It can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] As Figure 1 shown, a heat exchanger tube sheet injection-molding nail extractor of the present utility model includes: a base 1, a processing table 2, a first moving component 3, a second moving component 4, and an extraction component 5. The processing table 2 is fixedly arranged on the top of the base 1. The first moving component 3 is installed on the processing table 2. The second moving component 4 is installed on the first moving component 3. The extraction component 5 is installed on the second moving component 4. The first moving component 3 drives the extraction component 5 to move along the X-axis on the processing table 2, and the second moving component 4 drives the extraction component 5 to move along the Y-axis on the processing table 2. A relatively flat processing surface is provided for the tube sheet by the processing table 2. The first moving component 3 and the second moving component 4 drive the extraction component 5 to move to any position on the processing table 2, so as to extract the core nails.

[0022] During the processing, the processing table 2 needs to ensure flatness and roughness to prevent damage to the tube sheet coated with tetrafluoroethylene. Further, one or several rows of mounting holes are provided on the processing table 2 to align with the flange holes at the edge of the tube sheet, so as to facilitate the PLC programming to set the moving positions of the first moving component 3 and the second moving component 4.

[0023] The first moving component 3 includes: a first linear guide 31, a first slider 32, a first rack 33, a first gear 34, a first motor 35 and a first mounting seat 36. There are two first linear guides 31, which are installed in parallel on both sides of the processing table 2. The first slider 32 is sleeved on the first linear guide 31. The first rack 33 is installed on the processing table 2 and is arranged parallel to the first linear guide 31. There are two first mounting seats 36, which are fixedly connected to the first slider 32. The first motor 35 is fixed on the first mounting seat 36. The output end of the first motor 35 is connected to the first gear 34, and the first gear 34 meshes with the first rack 33. By driving the first gear 34 to mesh with the first rack 33 by the first motor 35, the first mounting seat 36 reciprocates on the first linear guide 31, and then the extraction component 5 moves along the X-axis on the processing table 2. For stable movement, two sets of the first rack 33, the first motor 35 and the first gear 34 can be provided, but the starting positions of the first gear 34 and the first rack 33 need to be matched well.

[0024] The second moving component 4 includes: a cross beam 41, a second linear guide 42, a second slider 43, a second rack 44, a second gear 45, a second motor 46 and a second mounting seat 47. There are two second linear guides 42, which are installed in parallel on the top of the cross beam 41. The second slider 43 is sleeved on the second linear guide 42. The second rack 44 is installed on the top of the cross beam 41 and is arranged parallel to the second linear guide 42. The second mounting seat 47 is fixedly connected to the second slider 43. The second motor 46 is fixed on the second mounting seat 47. The output end of the second motor 46 is connected to the second gear 45, and the second gear 45 meshes with the second rack 44. The end of the cross beam 41 is fixedly connected to the top of the first mounting seat 36. By driving the second gear 45 to mesh with the second rack 44 by the second motor 46, the second mounting seat 47 reciprocates on the second linear guide 42, and then the extraction component 5 moves along the Y-axis on the processing table 2. In the actual production process, in order to make the structure more compact, the second rack 44 is arranged in the middle of the two second linear guides 42.

[0025] As Figure 2 shown, the extraction component 5 includes: a lower pressing part 51 and an upper pulling part 5,2. One side of the second mounting seat 47 is fixedly provided with the lower pressing part 51, and the upper pulling part 52 is installed on the lower pressing part 51. By means of the lower pressing part 51, the upper pulling part 52 moves up and down on the processing table 2 to approach the tube sheet to a suitable height.

[0026] The pressing portion 51 includes a driving cylinder 511, a third linear rail 512, a third slider 513, a sliding plate 514, and a clamping block 515. The third slider 513 is vertically mounted on the second mounting base 47, the third linear rail 512 is vertically mounted on the sliding plate 514, the third slider 513 is sleeved on the third linear rail 512, and the clamping block 515 is mounted on the sliding plate 514. The driving cylinder 511 drives the sliding plate 514 to move up and down, and the clamping block 515 is used to mount the electric cylinder 523.

[0027] The pull-up unit 52 comprises a bracket 521, a third motor 522, an electric cylinder 523, a pressure block 524, and a clamping jaw 525. The bracket 521 is mounted above the clamping block 515, the third motor 522 is fixed to the bracket 521, and the electric cylinder 523 is fixedly connected to the clamping block 515. The pressure block 524 is mounted at the bottom of the electric cylinder 523, and the output end of the electric cylinder 523 extends out of the pressure block 524. The clamping jaw 525 is fixed to the output end of the electric cylinder 523. The pressure block 524 presses against the upper surface of the tube sheet, and the clamping jaw 525 secures the core nail in the mounting hole. Simultaneously, the third motor 522 drives the electric cylinder 523 to lift the output end, thereby extracting the core nail from the mounting hole.

[0028] The pressing block 524 is an annular structure and is installed at the bottom of the electric cylinder 523. The output end of the electric cylinder 523 passes through the middle of the pressing block 524. During the implementation process, it is necessary to ensure that the outer diameter of the pressing block 524 is larger than the outer diameter of the mounting hole. At the same time, the hole diameter in the center of the pressing block 524 must be larger than the outer diameter of the core nail so that the core nail can move upward.

[0029] The clamping jaws 525 are pneumatic clamping jaws 525. The pneumatic clamping jaws 525 are utilized to facilitate fixing the top of the core nail.

[0030] The processing table 2 is provided with a feed opening 6, and a channel 61 is provided at the bottom of the feed opening 6 to be communicated with the material receiving frame. The feed opening 6 and the channel 61 are convenient for collecting the extracted core nails for reuse.

[0031] like Figure 3As shown in the figure, during use, the tube sheet is hoisted and placed at a predetermined position on the processing table 2. The first moving component 3 and the second moving component 4 drive the extraction component 5 to move to the upper part of the tube sheet according to a preset program and move to above the core pin according to the positioning coordinates. The pressing part 51 drives the clamping jaw 525 to move down to the outer wall of the core pin and the pressing block 524 abuts against the outer wall of the tube sheet. The third motor 522 drives the electric oil cylinder 523 to move to drive the clamping jaw 525 to move down, and then the clamping jaw 525 clamps the outer wall of the core pin. Next, the third motor 522 drives the electric oil cylinder 523 to move, and on the premise that the pressing block 524 does not move, the clamping jaw 525 is pulled up. Then the pressing part 51 drives the clamping jaw 525 and the core pin clamped by the clamping jaw 525 to move up. Finally, the first moving component 3 and the second moving component 4 drive the clamping jaw 525 and the core pin to move above the blanking port 6. Subsequently, the clamping jaw 525 releases the core pin, and the core pin is collected from the blanking port 6 into the receiving frame for reuse. The steps of extracting the core pins are repeated until all the core pins are removed, and then the tube sheet is hoisted and removed.

[0032] The above are only some embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the creative concept of the present invention, other deformations and improvements can be made, and these all belong to the protection scope of the present invention.

Claims

1. Injection nail puller for heat exchanger tube sheet, characterized in that, Including: A base, a processing tabletop, a first moving component, a second moving component, and a pulling component. The processing tabletop is fixedly arranged at the top of the base. The first moving component is installed on the processing tabletop. The second moving component is installed on the first moving component. The pulling component is installed on the second moving component. The first moving component drives the pulling component to move along the X-axis on the processing tabletop, and the second moving component drives the pulling component to move along the Y-axis on the processing tabletop.

2. The injection molding nail extractor for the heat exchanger tube sheet according to claim 1, wherein The first moving component includes: two first linear guides, first sliders, a first rack, a first gear, a first motor, and a first mounting seat. The two first linear guides are arranged in parallel on both sides of the processing tabletop. The first sliders are sleeved on the first linear guides. The first rack is installed on the processing tabletop and is arranged parallel to the first linear guides. The two first mounting seats are fixedly connected to the first sliders. The first motor is fixed on the first mounting seat. The output end of the first motor is connected to the first gear, and the first gear meshes with the first rack.

3. The injection molding nail puller for the heat exchanger tube sheet according to claim 2, characterized in that, The second moving component includes: a cross beam, two second linear guides, second sliders, a second rack, a second gear, a second motor, and a second mounting seat. The two second linear guides are arranged in parallel on the top of the cross beam. The second sliders are sleeved on the second linear guides. The second rack is installed on the top of the cross beam and is arranged parallel to the second linear guides. The second mounting seat is fixedly connected to the second slider. The second motor is fixed on the second mounting seat. The output end of the second motor is connected to the second gear, and the second gear meshes with the second rack. The end of the cross beam is fixedly connected to the top of the first mounting seat.

4. The injection molding nail extractor for the heat exchanger tube sheet according to claim 3, characterized in that, The pulling component includes: a pressing part and a pulling-up part. The pressing part is fixedly arranged on one side of the second mounting seat, and the pulling-up part is installed on the pressing part.

5. The injection molding nail puller for the heat exchanger tube sheet according to claim 4, characterized in that, The pressing part includes: a driving cylinder, a third linear guide, a third slider, a sliding plate, and a clamping block. The third slider is vertically installed on the second mounting seat. The third linear guide is vertically installed on the sliding plate. The third slider is sleeved on the third linear guide. The clamping block is installed on the sliding plate.

6. The injection molding nail puller for the heat exchanger tube sheet according to claim 5, wherein The pulling-up part includes: a bracket, a third motor, an electric oil cylinder, a pressing block, and a clamping jaw. The bracket is installed above the clamping block. The third motor is fixed on the bracket. The electric oil cylinder is fixedly connected to the clamping block. The pressing block is installed at the bottom of the electric oil cylinder. The output end of the electric oil cylinder extends out of the pressing block, and the clamping jaw is fixedly installed at the output end of the electric oil cylinder.

7. The injection molding nail extractor for the heat exchanger tube sheet according to claim 6, wherein, The clamping jaw is a pneumatic clamping jaw.

8. The injection molding nail pulling machine for heat exchanger tube sheets according to any one of claims 1-7, characterized in that, A blanking port is arranged on the processing tabletop, and a channel is arranged at the bottom of the blanking port and communicated with a receiving frame.

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