Gradient degreasing and sintering device for part blanks

Abstract

The utility model relates to the technical field of metal powder manufacturing, and particularly discloses a gradient degreasing and sintering device for part blanks, which comprises a kiln. The conveying mechanism is mounted on the kiln and comprises a conveying belt; the placing frame can be placed on the conveying belt and comprises a frame body and a groove formed in the inner wall of the frame body, two sets of symmetrically-arranged clamping frames are installed at the bottom of the frame body in a sliding mode, the ends of the clamping frames make contact with the outer wall of the conveying belt, and an adjusting piece used for adjusting the position between the two sets of placing frames is arranged at the bottom of the frame body; the green body tray is mounted on the frame body, and the two sides of the green body tray are arranged in the grooves in a sliding manner; the conveying belt penetrates through the furnace body to convey products such as part blanks on the blank tray, the blank tray can be stably placed on the placing frame, and the stability of the placing frame on the conveying belt is ensured through the cooperation of the clamping frame and the adjusting piece on the placing frame; product displacement or mutual collision caused by shaking and deviation in the conveying process is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal powder manufacturing technical field, concretely is a kind of gradient degreasing sintering device of spare part blank. BACKGROUND

[0002] Metal or ceramic powder is mixed with organic binder, and the initial shape of the part is obtained by compression molding or injection molding. At this time, the part has very low strength and is full of binder inside. The purpose of degreasing is to remove the binder from the part in advance to prevent the quality of the product from being affected by the release of a large amount of gas due to high-temperature decomposition of the polymer during sintering. Finally, a small amount of residual polymer will be completely removed during the subsequent sintering process. The final sintering purpose is to densify the powder and remove most of the pores, which are occupied by the binder before degreasing. If the blank is rapidly heated to a very high sintering temperature, the internal binder will instantly melt, vaporize and violently evaporate. This will generate a huge internal gas pressure, causing the part to appear bubbles, cracks, deformation and other fatal defects. Gradient degreasing sintering is a process that can obtain final products with fine grain size, uniform structure and excellent mechanical properties by precisely controlling the sintering temperature and atmosphere in the kiln. In the kiln sintering process, the product needs to be stably placed on the conveying part for conveying.

[0003] The existing patent No. CN220931747U discloses a kiln, which includes a furnace body and a roller way. The roller way penetrates the furnace body and the two ends of the roller way extend out of the furnace body. The roller way includes roller wheels arranged at intervals along a first direction, and the roller wheels are used for placing materials. An insertion port is formed in the side wall of the furnace body and is located below the roller way. The kiln also includes a push-pull device, which has an accommodation cavity with an opening facing upward. The push-pull device is configured to be inserted into the interior of the furnace body through the insertion port and placed below the roller way, and the accommodation cavity is in communication with the gap between adjacent two roller wheels. The roller wheels are used for placing materials.

[0004] In the kiln sintering process, the stability and uniformity of the temperature field in the furnace are required to be high. The above-mentioned kiln uses a roller way to convey the product, and the stability of the product conveying still needs to be improved. In view of the above problems, a gradient degreasing sintering device for spare part blank is proposed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a gradient degreasing sintering device for spare part blank to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The application discloses a gradient debinding and sintering device for part blanks, which comprises a kiln, a conveying mechanism installed on the kiln, a conveying belt, a placing rack placed on the conveying belt, a rack body and a groove arranged on the inner wall of the rack body, two groups of clamping racks symmetrically arranged and slidably installed on the bottom of the rack body, the end of the clamping rack in contact with the outer wall of the conveying belt, an adjusting part arranged on the bottom of the rack body and used for adjusting the distance between the two groups of placing racks, a blank tray installed on the rack body and slidably arranged in the groove, and a discharging alarm mechanism used for discharging detection after sintering.

[0008] In an optional solution, the kiln comprises a kiln body and a mounting rack, the discharging end and the feeding end of the kiln body are provided with the mounting rack, the mounting rack is provided with a driving part used for driving the conveying belt to rotate, and the top of the kiln body is connected with an air supply pipe and an exhaust treatment pipe.

[0009] In an optional solution, the bottom of the rack body is in contact with the surface of the conveying belt, and the bottom of the rack body is provided with a rectangular hole on each side.

[0010] In an optional solution, the clamping rack comprises a strip-shaped rod and a connecting rod connected to one side of the strip-shaped rod, the connecting rod is connected with a clamping block at the end away from the strip-shaped rod, the side wall of the clamping block close to the connecting rod is in contact with the side of the conveying belt, and the connecting rod is slidably matched with the rectangular hole.

[0011] In an optional solution, the adjusting part comprises a connecting rod, the side close to each other of the two groups of strip-shaped rods is rotationally connected with two groups of connecting rods, the two groups of connecting rods located between one end of the two groups of strip-shaped rods are rotationally connected with a first movable block, the two groups of connecting rods located between the other end of the two groups of strip-shaped rods are rotationally connected with a second movable block, the second movable block is rotationally connected with an adjusting rod, the end of the adjusting rod is provided with a threaded area, and the first movable block is provided with a threaded hole matched with the threaded area in a threaded mode.

[0012] In an optional solution, the two ends of the adjusting rod are connected with a rotating ring, and the bottom of the rack body is provided with a rotating hole used for supporting the rotation of the adjusting rod.

[0013] In an optional solution, the discharging alarm mechanism comprises two groups of infrared sensors arranged at the discharging end of the kiln body, the two groups of infrared sensors are arranged on the two sides of the conveying belt respectively, the mounting rack at the discharging end of the kiln body is provided with a supporting rack used for supporting the infrared sensors, the top of the kiln body close to the discharging end is provided with a mounting rod, and the mounting rod is provided with an alarm lamp and an alarm.

[0014] Compared with the prior art, the application has the following beneficial effects:

[0015] The utility model discloses a conveying belt penetrates the furnace body and conveys the product such as the blank body of spare part blank body on the blank body tray, and the blank body tray can be stably placed on the placing frame, and the cooperation of the clamping frame and the adjusting part on the placing frame ensures the stability of the placing frame on the conveying belt, prevents the product displacement or mutual collision due to shaking and deviation in the conveying process.

[0016] The adjusting part can flexibly adjust the spacing of the two sets of clamping frames, thereby adapting to the width of the conveying belt, and the placing frame is stably placed on the conveying belt.

[0017] The utility model discloses a discharging alarm mechanism automatically detects the product out of the furnace, and timely reminds the operator to take the material, avoids the product accumulation in the discharging end, excessive cooling or other problems that can occur due to no one supervises. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic drawing of the utility model.

[0019] Figure 2 It is the structure schematic drawing of the utility model kiln feeding end.

[0020] Figure 3 It is the structure schematic drawing of the utility model kiln discharging end.

[0021] Figure 4 It is the structure schematic drawing of the utility model placing frame and blank body tray.

[0022] Figure 5 It is the structure schematic drawing of the utility model placing frame.

[0023] Figure 6 It is the structure schematic drawing of the utility model placing frame and blank body tray.

[0024] In the drawing: 1, kiln; 2, conveying mechanism; 3, placing frame; 4, blank body tray; 5, discharging alarm mechanism; 11, kiln main body; 12, mounting frame; 13, air supply pipe; 14, tail gas treatment pipe; 21, conveying belt; 22, driving part; 31, frame body; 32, recess; 33, clamping frame; 34, adjusting part; 35, rectangular hole; 51, infrared inductor; 52, support frame; 53, mounting rod; 54, alarm lamp; 55, alarm; 331, strip rod; 332, link rod; 333, clamping block; 341, connecting rod; 342, first movable block; 343, second movable block; 344, adjusting rod; 345, screw thread area; 346, rotating ring. DETAILED DESCRIPTION

[0025] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication or the interaction of two elements, unless another definite limitation.For the ordinary skilled person in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled person in the art without making creative labor belong to the range of protection of the utility model.

[0027] Please refer to Figures 1-6 In the embodiment, a gradient degreasing and sintering device for a part blank includes a kiln 1;Conveying mechanism 2 is installed on the kiln 1, which includes a conveying belt 21;The conveying mechanism 2 drives the part blank into the kiln 1 to complete the gradient degreasing and sintering;A gradient temperature field can be formed inside the kiln main body 11, the temperature is different in different regions, which meets the gradient processing requirements of the blank from low-temperature degreasing to high-temperature sintering;

[0028] The placing rack 3 can be placed on the conveying belt 21, which includes a rack body 31 and a groove 32 arranged on the inner wall of the rack body 31, the rack body 31 is slidably installed with two groups of clamping racks 33 arranged symmetrically, the end of the clamping rack 33 is in contact with the outer wall of the conveying belt 21, and the bottom of the rack body 31 is provided with an adjusting member 34 for adjusting the distance between the two groups of placing racks 3;

[0029] The blank tray 4 is installed on the rack body 31, and the blank tray 4 is slidably arranged in the groove 32 on both sides, the blank tray 4 is slid into the groove 32 on both sides, which limits the transverse movement of the tray and prevents the displacement of the blank during conveying or sintering;The rack body 31 serves as a basic bearing structure, and the bottom is in contact with the conveying belt 21, and in actual production, the height of the rack body 31 can be set to be consistent with the height of the kiln 1, and the product into the furnace cannot exceed this limit;

[0030] And the discharge alarm mechanism 5 is used for discharge detection after sintering.

[0031] The placing rack 3 is placed on the surface of the conveying belt 21, and the placing rack 3 and the blank tray 4 are sent into the feeding end of the kiln 1 through continuous movement, and are sent out from the discharging end after sintering, so that the continuous processing of the blank is realized;

[0032] Please refer toFigure 1 and Figure 2 The kiln 1 comprises a kiln body 11 and a mounting frame 12, the kiln body 11 is provided with the mounting frame 12 at the discharge end and the feeding end, and the driving component 22 for driving the rotation of the conveying belt 21 is mounted on the mounting frame 12; the driving component 22 provides power to drive the circulating movement of the conveying belt 21.

[0033] The top of the kiln body 11 is connected with the air supply pipe 13 and the tail gas treatment pipe 14; the air supply pipe 13 supplies heat source, such as high-temperature gas, into the kiln body 11 to maintain the required temperature for sintering, and the tail gas treatment pipe 14 leads out and treats the waste gas, such as organic volatile matter, generated by the debinding in the kiln body 11 to avoid environmental pollution; the air supply can be stopped when the kiln body 11 is working.

[0034] Please refer to Figure 6 The bottom of the frame body 31 is in contact with the surface of the conveying belt 21, and the bottom of the frame body 31 is provided with the rectangular hole 35 on both sides.

[0035] Please refer to Figure 6 The clamping frame 33 comprises the strip-shaped rod 331 and the connecting rod 332 connected to one side of the strip-shaped rod 331, the connecting rod 332 is connected with the clamping block 333 at the end away from the strip-shaped rod 331, the side wall of the connecting rod 332 close to the strip-shaped rod 331 is in contact with the side of the conveying belt 21, and the connecting rod 332 is in sliding fit with the rectangular hole 35.

[0036] The connecting rod 332 can slide in the rectangular hole 35 to adjust the position, so as to adjust the position of the clamping block 333, and two sets of clamping frames 33 can assist the stable placement of the frame body 31 on the conveying belt 21.

[0037] Please refer to Figure 6 The adjusting piece 34 comprises the connecting rod 341, one side of the two sets of strip-shaped rods 331 close to each other is rotationally connected with the two sets of connecting rods 341, the two sets of connecting rods 341 located between one end of the two sets of strip-shaped rods 331 are rotationally connected with a set of first movable blocks 342, the two sets of connecting rods 341 located between the other end of the two sets of strip-shaped rods 331 are rotationally connected with a set of second movable blocks 343, the second movable block 343 is rotationally connected with the adjusting rod 344, the end of the adjusting rod 344 is provided with the threaded area 345, and the first movable block 342 is provided with the threaded hole in screw fit with the threaded area 345.

[0038] Specifically, the adjusting rod 344 is rotated, the threaded area 345 is in screw fit with the threaded hole of the first movable block 342, the first movable block 342 and the second movable block 343 are relatively moved, the distance between the first movable block 342 and the second movable block 343 is changed, the distance between the two sets of strip-shaped rods 331 is adjusted through the transmission of the two sets of connecting rods 341, and the clamping force of the clamping block 333 on the conveying belt 21 is adjusted.

[0039] Please refer to Figure 6 , the adjusting rod 344 is connected with the rotating ring 346 at both ends, and the bottom of the frame body 31 is provided with a rotating hole for supporting the rotation of the adjusting rod 344; the rotating ring 346 is convenient for operating the rotation of the adjusting rod 344.

[0040] Please refer to Figure 3 , the discharging alarm mechanism 5 includes two groups of infrared sensors 51 arranged at the discharging end of the kiln body 11, and the two groups of infrared sensors 51 are arranged on the two sides of the conveying belt 21, respectively, and the mounting frame 12 at the discharging end of the kiln body 11 is provided with a support frame 52 for supporting the infrared sensor 51, and the top of the discharging end of the kiln body 11 is provided with a mounting rod 53, and the mounting rod 53 is provided with an alarm lamp 54 and an alarm 55;

[0041] Specifically, one side of the infrared sensor 51 is a transmitter that continuously emits infrared rays; the other side is a receiver that continuously receives infrared rays, and the sintered body tray 4 is sent out of the kiln body 11 with the conveying belt 21, and when passing between the two groups of infrared sensors 51, the frame body 31 will block the infrared rays, causing the receiver to fail to receive the signal. After the receiver detects the interruption of the signal, it will transmit the electrical signal such as low level to high level to the control system of the device, and the mounting rod 53 is fixed at the top of the discharging end of the kiln body 11, so that it is in a position easy to be observed and heard by the operator. When the control system receives the "signal interruption" signal from the infrared sensor 51, i.e. detects that the sintered body tray 4 is sent out, it will immediately output a control signal to power on the alarm lamp 54, so that it emits a flickering light signal such as red light, and through visual prompting, power on the alarm 55, so that it emits a sound signal such as buzzing or voice prompt, and through auditory prompting, when the operator removes the sintered body tray 4 and the frame body 31, the infrared rays are no longer blocked, and the receiver resumes receiving the signal. The control system stops outputting the control signal, and the alarm lamp 54 and the alarm 55 stop working, waiting for the next discharging detection.

[0042] The working principle of the utility model is: the frame body 31 is placed at the feeding end of the kiln 1, is placed on the conveying belt 21, the rotary adjusting rod 344, the threaded area 345 and the threaded hole of the first movable block 342 are matched, the first movable block 342 and the second movable block 343 are relatively moved, the distance between the first movable block 342 and the second movable block 343 changes, thereby the transmission of the two groups of connecting rods 341, the distance between the two groups of strip rods 331 is adjusted, the clamping force of the clamping block 333 to the conveying belt 21 is adjusted, the two groups of clamping frames 33 cooperate, the frame body 31 can be stably placed on the conveying belt 21, according to the product height on the blank body tray 4, selectively placing one or two layers of blank body trays 4, the driving part 22 provides power, drives the conveying belt 21 to move in cycles, the product enters the kiln main body 11 to carry out gradient degreasing sintering, the sintered blank body tray 4 is sent out of the kiln main body 11 along with the conveying belt 21, after the detection and reminding of the discharging alarm mechanism 5, the personnel is reminded to take the material.

[0043] The above is only the preferred embodiment of the utility model, and is not other forms of the limitation of the utility model, any skilled person in the art can change or modify the above disclosed technology content to equivalent embodiment applied to other fields, but any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model still belongs to the protection scope of the utility model technical scheme.

Claims

1. A gradient degreasing and sintering device for component green bodies, characterized in that: The utility model provides a kind of sintering device, including Kiln (1); Conveying mechanism (2) installed on kiln (1), it includes conveying belt (21); Placement rack (3) can be placed on conveying belt (21), it includes rack body (31) and the recess (32) of setting in the inner wall of rack body (31), the bottom of rack body (31) is slidably installed with two groups of symmetrically arranged clamping frame (33), the end of clamping frame (33) is in contact with the outer wall of conveying belt (21), the bottom of rack body (31) is equipped with adjusting member (34) for adjusting between two groups of the placement rack (3); Blank tray (4) installed on rack body (31), blank tray (4) is slidably placed on both sides of recess (32); And discharge alarm mechanism (5) is used for discharge detection after sintering ends.

2. A device for gradient debinding and sintering of a green part according to claim 1, characterized in that: The kiln (1) includes kiln main body (11) and mounting bracket (12), the discharge end and the feeding end of the kiln main body (11) are provided with the mounting bracket (12), the mounting bracket (12) is provided with the driving component (22) for driving the conveying belt (21) to rotate, the top of the kiln main body (11) is connected with the air supply pipe (13) and the tail gas treatment pipe (14).

3. A device for gradient debinding and sintering of a green part according to claim 1, characterized in that: The bottom of the rack body (31) is in contact with the surface of the conveying belt (21), and the bottom of the rack body (31) is provided with a rectangular hole (35) on both sides.

4. A device for gradient debinding and sintering of a green part according to claim 3, characterized in that: The clamping frame (33) includes a bar (331) and a connecting rod (332) connected to one side of the bar (331), one end of the connecting rod (332) away from the bar (331) is connected to a clamping block (333), the side wall of the clamping block (333) close to the connecting rod (332) side is in contact with the side of the conveying belt (21), and the connecting rod (332) is slidably connected with the rectangular hole (35).

5. A device for gradient debinding and sintering of a green part according to claim 4, characterized in that: The adjusting member (34) includes a connecting rod (341), two groups of the bar (331) are rotatably connected with two groups of the connecting rod (341) on one side close to each other, two groups of the connecting rod (341) between one end of the two groups of the bar (331) are rotatably connected with a first movable block (342), two groups of the connecting rod (341) between the other end of the two groups of the bar (331) are rotatably connected with a second movable block (343), the second movable block (343) is rotatably connected with an adjusting rod (344), the end of the adjusting rod (344) is provided with a threaded area (345), and the first movable block (342) is provided with a threaded hole threadedly matched with the threaded area (345).

6. A device for gradient debinding and sintering of a green part according to claim 5, characterized in that: Both ends of the adjusting rod (344) are connected with a rotating ring (346), and the bottom of the rack body (31) is provided with a rotating hole for supporting the rotation of the adjusting rod (344).

7. A device for gradient debinding and sintering of a green part according to claim 2, characterized in that: The discharge alarm mechanism (5) includes two groups of infrared sensors (51) arranged at the discharge end of the kiln main body (11), two groups of infrared sensors (51) are respectively arranged on both sides of the conveying belt (21), the mounting bracket (12) at the discharge end of the kiln main body (11) is provided with a supporting frame (52) for supporting the infrared sensor (51), the top of the kiln main body (11) close to the discharge end is provided with a mounting rod (53), and the mounting rod (53) is provided with an alarm lamp (54) and an alarm (55).

Images