阅读说明：本技术 一种用于金属材料深冷加工的自动化减耗处理设备 (Automatic consumption reduction treatment equipment for cryogenic processing of metal material ) 是由 何进巧 于 2021-01-08 设计创作，主要内容包括：本发明公开了一种用于金属材料深冷加工的自动化减耗处理设备,包括冷却箱以及设置于所述冷却箱左侧的液氮机构,所述冷却箱右侧设有进出机构、封闭机构、切换机构、动力机构,本发明将反应区与外界完全隔开,在大幅减少液氮散逸浪费的同时,使深冷加工时不再需要苛刻的通风环境要求,在自动化的进出装置下,操作人员不需要再伸入液氮内取出金属件,降低了传统的安全风险,同时本发明使用了雾化喷射携带金属件在桶内反复运转的机构使得金属件能够均匀的降温,减少了不合格件的出现,同时本发明实现了处理过程自动化,大大提高了处理效率,节省了劳动力,降低了深冷加工成本。(The invention discloses automatic consumption-reducing treatment equipment for cryogenic processing of a metal material, which comprises a cooling box and a liquid nitrogen mechanism arranged on the left side of the cooling box, the right side of the cooling box is provided with an inlet and outlet mechanism, a sealing mechanism, a switching mechanism and a power mechanism, the invention completely separates a reaction zone from the outside, greatly reduces the waste of liquid nitrogen dissipation, avoids the strict requirement on ventilation environment during cryogenic processing, under the automatic in-out device, operators do not need to extend into liquid nitrogen to take out metal parts, the traditional safety risk is reduced, meanwhile, the invention uses the mechanism that the atomized spray carries the metal piece to repeatedly operate in the barrel, so that the metal piece can be uniformly cooled, the occurrence of unqualified pieces is reduced, meanwhile, the invention realizes the automation of the treatment process, greatly improves the treatment efficiency, saves the labor force and reduces the cryogenic processing cost.)

1. An automatic consumption reduction treatment equipment for cryogenic processing of metal materials is characterized in that: the cooling device comprises a cooling box and a liquid nitrogen mechanism arranged on the left side of the cooling box, wherein an inlet and outlet mechanism, a sealing mechanism, a switching mechanism and a power mechanism are arranged on the right side of the cooling box; the operation mechanism comprises a soft rack positioned in the inner wall of the cooling cavity, one end of the soft rack extends into the cooling cavity and is uniformly connected with a connecting block, an operation box is fixedly arranged on the inner side of the connecting block, an operation cavity is arranged in the operation box, three resistance blocks are uniformly arranged on the right wall of the operation cavity, two baffle plates which are bilaterally symmetrical are fixedly arranged on the front and back walls of the operation cavity, a sliding rod capable of sliding forwards, backwards, leftwards and rightwards is arranged on the sliding rod, the sliding rod is positioned on two sides, a limiting ring is arranged between the baffle plates to limit the range of the left and right movement of the baffle plates, the left side of the limiting ring is elastically connected with the right wall of the baffle plate on the left side through a spring, the front side of the sliding rod is elastically connected with the front wall of the operation cavity through a spring, the right end of the sliding rod is abutted against one side of the resistance blocks, and the front, when the right end of the sliding rod moves to the rearmost side, the resistance block is ejected out of the cooling cavity, a placing plate capable of rotating along the right end is arranged on the upper portion of the placing plate, the lower side of the placing plate is elastically connected with the bottom wall of the operation cavity through a spring, a fixing base is fixedly arranged on the bottom wall of the operation cavity, a rotatable lever is arranged on the upper side of the fixing base, a lever push rod is arranged at the left end of the lever, a rotating base is fixedly arranged on the rear wall of the operation cavity, a rotating hook claw is rotatably arranged at the front end of the rotating base, a fixing hook claw is connected to a protruding portion at the upper end of the rotating hook claw, the upper end of the fixing hook claw is fixedly connected with the placing plate, the lower end of the rotating hook claw is located at the rear side of the lever push rod, when the lever push rod moves backwards, connection of the fixing hook claw can be released through the rotating hook claw, the rear wall of the operation cavity is provided with a spring roll, the inner side of the spring roll is connected with the spring roll extending to the rear side of the operation cavity, the threaded rod is provided with a rotating gear at the rear side of the operation box, the left side of the rotating gear is meshed with a rack ring, the upper end of the rack ring is connected with the lower side of the placing plate, when the placing plate is opened, the threaded rod can move forwards to enable the blocking plate to return to the initial position, the sealing mechanism comprises an inlet pipe connected to the right side of the cooling cavity, a left-right through inlet and outlet cavity is arranged in the inlet and outlet pipe, two ends of the inlet and outlet cavity are provided with two sealing plates which are bilaterally symmetrical and can move up and down, the upper ends of the sealing plates are rotatably connected with two ends of a lifting rod, a base is fixedly arranged on the upper side of the inlet and outlet pipe, a rotating shaft is arranged on, one side of the closing plate is opened, and the other side of the closing plate is closed, so that leakage and waste of liquid nitrogen are greatly reduced when the metal piece enters and exits from the entering and exiting cavity.

2. An automatic consumption reduction processing plant for the cryogenic processing of metallic materials according to claim 1, characterized in that: the liquid nitrogen mechanism comprises a liquid nitrogen box positioned on the left side of the cooling box, a nitrogen spraying pipe extending into the cooling cavity is arranged at the upper end of the liquid nitrogen box, one end of the nitrogen spraying pipe, which is positioned in the cooling cavity, is connected with an atomizing pipe, the lower side of the liquid nitrogen box is provided with a nitrogen absorbing pipe which extends to the left wall of the cooling cavity, the bottom wall of the cooling cavity is provided with a bottom spraying pipe, when the device starts to operate, the liquid nitrogen box sprays atomized liquid nitrogen to the metal piece in the cooling cavity through the nitrogen spraying pipe and the atomizing pipe, the falling liquid nitrogen is sprayed upwards through the bottom spray pipe for the second time to uniformly cool the surface of the metal piece as much as possible, and when the liquid nitrogen is deposited more, the liquid nitrogen can be sucked through the nitrogen suction pipe for secondary spraying, the liquid nitrogen with a certain depth is reserved in the cooling cavity to keep the stability of the environmental temperature, and the phenomenon that the performance of the metal piece is influenced by sudden temperature rise when the liquid nitrogen in the liquid nitrogen box is insufficient is prevented.

3. An automatic consumption reduction processing plant for the cryogenic processing of metallic materials according to claim 1, characterized in that: power unit is including being located the backup pad that business turn over pipe lower side extended the rear side, the fixed motor that is equipped with in the backup pad, motor front side power is connected with the main shaft, be equipped with drive bevel gear on the main shaft, drive bevel gear left side meshing is connected with driven bevel gear, driven bevel gear left side is connected with the follower through the driven shaft, follower upside power is connected with the fifth wheel, spout nitrogen pipe fifth wheel left side and extend to the inboard meshing of cooler bin is connected soft rack, for the whole operation of running gear provides power, and only open one in the side by the loss of the liquid nitrogen that has significantly reduced of power mouth that soft rack covers.

4. An automatic consumption reduction processing plant for the cryogenic processing of metallic materials according to claim 1, characterized in that: the in-out mechanism comprises a bottom plate positioned on the bottom wall of the in-out cavity, two pushing blocks symmetrically extending inwards are arranged at two ends of the upper side of the bottom plate, a rotating power shaft is connected to the inner side of the middle part of the bottom plate, a rotating wheel is connected to the front end of the power shaft, a sliding plate capable of sliding on the upper surface of the bottom plate is meshed at the upper end of the rotating wheel, a vane European-shaped rotating plate is arranged at the middle part of the upper side of the sliding plate, a supporting block is rotatably connected to the upper end of the rotating plate, two sliding boxes are symmetrically and slidably arranged at two ends of the upper side of the sliding plate, a sliding cavity is arranged in each sliding box, a sliding core is slidably arranged in each sliding cavity, the lower side of each sliding core is elastically connected with the bottom wall of each sliding cavity through a spring, a sliding box rod extending to the, the inner sides of the sliding boxes on the two sides are elastically connected with one side of the rotating plate through a spring, when the rotating wheel rotates to drive the sliding plate to integrally move leftwards, the pushing block on the left side impacts the sliding box on the left side to enable the supporting block to incline leftwards, otherwise, the supporting block inclines rightwards, and the purpose of receiving and placing metal pieces is achieved.

5. An automatic consumption reduction processing plant for the cryogenic processing of metallic materials according to claim 1, characterized in that: the switching mechanism comprises an impact switch which is positioned on the right wall of the cooling cavity and positioned on the upper side of the connecting block, the right side of the impact switch is provided with a control line which extends to the lower side of the inlet and outlet pipe, the lower side of the inlet and outlet pipe is fixedly provided with an air pump, the left side of the air pump is connected with the control line, the right side of the air pump is connected with a press switch which is fixed on the lower side of the inlet and outlet pipe through a supporting plate, the rear side of the air pump is provided with an air inlet pipe, a push box is fixedly arranged in the supporting plate, a push cavity is arranged in the push box, a push sliding core is arranged in the push cavity in a sliding manner, the lower side of the push sliding core is elastically connected with the bottom wall of the push cavity through a push spring, one end of the air, the utility model discloses a motor, including main shaft, power shaft, belt pulley, belt bump switch, push rod, belt pulley, motor, sealing mechanism, power shaft position with the main shaft corresponds, the non-power of main shaft front end is connected with driving pulley, driving pulley front side is equipped with forward open-ended belt pulley chamber, be equipped with on the wall behind the belt pulley chamber with spline elastic connection's spline spring, belt pulley chamber upside passes through the belt and connects driven pulley, driven pulley front side power is connected the rotation axis is worked as impact switch perhaps just can pass through when push rod triggers thereby the spline gets into the belt pulley intracavity with to the meshing connection, make the motor drive the rotation axis with the running wheel is rotatory, make business turn over mechanism with the sealing mechanism begins.

Technical Field

The invention relates to automatic consumption-reducing treatment equipment for cryogenic processing of metal materials, and mainly relates to the technical field of cryogenic processing of metals.

Background

The cryogenic technology is a new process technology for transmitting the performance of metal workpieces, which is the most effective and economic technical means. In the cryogenic processing process, a large amount of residual austenite in the metal is converted into martensite, particularly, the supersaturation degree of supersaturated metastable martensite is reduced in the process of from minus one hundred ninety six ℃ to room temperature, dispersed ultra-fine carbide is precipitated, the lattice distortion of the martensite can be reduced, the micro stress is reduced, and the fine dispersed carbide can block dislocation motion when the material is plastically deformed, so that the matrix structure is strengthened;

meanwhile, because the ultra-fine carbide particles are uniformly distributed on the martensite matrix after being precipitated, the embrittlement effect of the grain boundary is weakened, and the refinement of the matrix structure not only weakens the segregation degree of impurity elements in the grain boundary, but also plays a role in strengthening the grain boundary, thereby improving the performance of the tool and the die and obviously improving the hardness, the impact toughness and the wear resistance;

the improvement effect of the deep cooling technology is not limited to the working surface, and the deep cooling technology permeates into the workpiece and reflects the integral effect, so that the workpiece can be reground and repeatedly used, and the deep cooling technology has the effects of reducing quenching stress and enhancing dimensional stability;

at present, the cryogenic processing of small workpieces is usually carried out by using liquid nitrogen for rapid cooling, and the main use mode is to put metal parts into a barrel with liquid nitrogen for cooling, but the mode has several problems, the most important is that the barrel cover needs to be frequently opened and closed to carry out the operation of placing and taking out the metal piece, this results in a large amount of liquid nitrogen being rapidly dissipated in contact with air, the cost of using liquid nitrogen is drastically increased, and because the liquid nitrogen has large fogging, the tool is inconvenient to clamp and is easy to scratch, the tool needs to be manually taken out with the protective tool, so that safety accidents such as frostbite and the like are easy to cause, secondly, the mode has higher requirements on the environment, suffocation is easy to occur in a sealed environment, ventilation is kept constantly, and finally the mode is easily immersed in liquid nitrogen, so that the bottom surface of the metal piece is not completely contacted, and the subsequent processing performance of the metal piece can be influenced; the operation efficiency is low, automation is difficult to realize, and the invention improves aiming at the defects.

Disclosure of Invention

The invention aims to solve the technical problem of providing automatic consumption reduction treatment equipment for cryogenic processing of metal materials, and overcomes the problems.

The invention is realized by the following technical scheme.

The invention relates to automatic consumption reduction treatment equipment for cryogenic processing of a metal material, which comprises a cooling box and a liquid nitrogen mechanism arranged on the left side of the cooling box, wherein the right side of the cooling box is provided with an inlet and outlet mechanism, a sealing mechanism, a switching mechanism and a power mechanism, a cooling cavity is arranged in the cooling box, and an operation mechanism is arranged in the cooling cavity;

the operation mechanism comprises a soft rack positioned in the inner wall of the cooling cavity, one end of the soft rack extends into the cooling cavity and is uniformly connected with a connecting block, an operation box is fixedly arranged on the inner side of the connecting block, an operation cavity is arranged in the operation box, three resistance blocks are uniformly arranged on the right wall of the operation cavity, two baffle plates which are bilaterally symmetrical are fixedly arranged on the front and back walls of the operation cavity, a sliding rod capable of sliding forwards, backwards, leftwards and rightwards is arranged on the sliding rod, the sliding rod is positioned on two sides, a limiting ring is arranged between the baffle plates to limit the range of the left and right movement of the baffle plates, the left side of the limiting ring is elastically connected with the right wall of the baffle plate on the left side through a spring, the front side of the sliding rod is elastically connected with the front wall of the operation cavity through a spring, the right end of the sliding rod is abutted against one side of the resistance blocks, and the front, when the right end of the sliding rod moves to the rearmost side, the resistance block is ejected out of the cooling cavity, a placing plate capable of rotating along the right end is arranged on the upper portion of the placing plate, the lower side of the placing plate is elastically connected with the bottom wall of the operation cavity through a spring, a fixing base is fixedly arranged on the bottom wall of the operation cavity, a rotatable lever is arranged on the upper side of the fixing base, a lever push rod is arranged at the left end of the lever, a rotating base is fixedly arranged on the rear wall of the operation cavity, a rotating hook claw is rotatably arranged at the front end of the rotating base, a fixing hook claw is connected to a protruding portion at the upper end of the rotating hook claw, the upper end of the fixing hook claw is fixedly connected with the placing plate, the lower end of the rotating hook claw is located at the rear side of the lever push rod, when the lever push rod moves backwards, connection of the fixing hook claw can be released through the rotating hook claw, the spring roll is arranged on the rear wall of the operation cavity, the spring roll extending to the rear side of the operation cavity is connected to the inner side of the spring roll, a rotating gear is arranged on the rear side of the operation box, a rack ring is meshed on the left side of the rotating gear, the upper end of the rack ring is connected with the lower side of the placement plate, and when the placement plate is opened, the threaded rod moves forwards to enable the blocking plate to return to the initial position.

The sealing mechanism comprises an inlet pipe connected to the right side of the cooling cavity, a left inlet pipe and a right outlet pipe which are communicated are arranged in the inlet pipe and the outlet pipe, two bilaterally symmetrical sealing plates which can move up and down are arranged at two ends of the inlet pipe and the outlet pipe, the upper ends of the sealing plates are rotatably connected with two ends of a lifting rod, a base is fixedly arranged on the upper side of the inlet pipe and the outlet pipe, a rotating shaft is arranged on the upper side of the base and connected with the lifting rod, when the rotating shaft rotates forwards or backwards, one side of the sealing plate is opened to close one side of the sealing plate, and therefore liquid nitrogen leakage and waste are greatly reduced when metal parts pass in and out of the inlet.

Furthermore, the liquid nitrogen mechanism comprises a liquid nitrogen box positioned on the left side of the cooling box, the upper end of the liquid nitrogen box is provided with a nitrogen spraying pipe extending into the cooling cavity, one end of the nitrogen spraying pipe positioned in the cooling cavity is connected with an atomizing pipe, the lower side of the liquid nitrogen box is provided with a nitrogen absorbing pipe extending to the left wall of the cooling cavity, the bottom wall of the cooling cavity is provided with a bottom spray pipe, when the device starts to operate, the liquid nitrogen box sprays atomized liquid nitrogen to the metal piece in the cooling cavity through the nitrogen spraying pipe and the atomizing pipe, the fallen liquid nitrogen can be sprayed upwards through the bottom spray pipe for the second time, the surface of the metal piece is uniformly cooled as far as possible, the liquid nitrogen can be sprayed through the nitrogen absorbing pipe when the liquid nitrogen is deposited more, the liquid nitrogen with a certain depth is reserved in the cooling cavity for keeping the stability of the ambient temperature, and when the liquid nitrogen in the liquid, the sudden temperature rise affects the properties of the metal part.

Further, power unit is including being located the backup pad that the business turn over pipe lower side extends the rear side, the fixed motor that is equipped with in the backup pad, motor front side power is connected with the main shaft, be equipped with drive bevel gear on the main shaft, drive bevel gear left side meshing is connected with driven bevel gear, driven bevel gear left side is connected with the follower through the driven shaft, follower upside power is connected with the fifth wheel, spout nitrogen pipe fifth wheel left side and extend to the inboard meshing of cooler bin is connected soft rack, for the whole operation of running gear provides power, and only open one in the side by the loss of the liquid nitrogen that has been reduced by a wide margin to the power port that soft rack covers.

Furthermore, the in-out mechanism comprises a bottom plate positioned on the bottom wall of the in-out cavity, two ends of the upper side of the bottom plate are provided with two push blocks which extend inwards and symmetrically, the inner side of the middle part of the bottom plate is connected with a rotating power shaft, the front end of the power shaft is connected with a rotating wheel, the upper end of the rotating wheel extends to the upper side of the bottom plate and is engaged with a sliding plate capable of sliding on the upper surface of the bottom plate, the middle part of the upper side of the sliding plate is provided with a fan blade European-shaped rotating plate, the upper end of the rotating plate is rotatably connected with a supporting block, two ends of the upper side of the sliding plate are symmetrically provided with two sliding boxes in a sliding manner, a sliding cavity is arranged in each sliding box, a sliding core is arranged in each sliding cavity in a sliding manner, the lower side of each sliding core is elastically connected with the bottom, the inner sides of the sliding boxes on the two sides are elastically connected with one side of the rotating plate through a spring, when the rotating wheel rotates to drive the sliding plate to integrally move leftwards, the pushing block on the left side impacts the sliding box on the left side to enable the supporting block to incline leftwards, otherwise, the supporting block inclines rightwards, and the purpose of receiving and placing metal pieces is achieved.

Further, the switching mechanism comprises an impact switch which is positioned on the right wall of the cooling cavity and positioned on the upper side of the connecting block, the right side of the impact switch is provided with a control line which extends to the lower side of the inlet and outlet pipe, the lower side of the inlet and outlet pipe is fixedly provided with an air pump, the left side of the air pump is connected with the control line, the right side of the air pump is connected with a press switch which is fixed on the lower side of the inlet and outlet pipe through a supporting plate, the rear side of the air pump is provided with an air inlet pipe, a push box is fixedly arranged in the supporting plate, a push cavity is arranged in the push box, a push sliding core is slidably arranged in the push cavity, the lower side of the push sliding core is elastically connected with the bottom wall of the push cavity through a push spring, one end of the air inlet pipe is connected with, the utility model discloses a motor, including main shaft, power shaft, belt pulley, belt bump switch, push rod, belt pulley, motor, sealing mechanism, power shaft position with the main shaft corresponds, the non-power of main shaft front end is connected with driving pulley, driving pulley front side is equipped with forward open-ended belt pulley chamber, be equipped with on the wall behind the belt pulley chamber with spline elastic connection's spline spring, belt pulley chamber upside passes through the belt and connects driven pulley, driven pulley front side power is connected the rotation axis is worked as impact switch perhaps just can pass through when push rod triggers thereby the spline gets into the belt pulley intracavity with to the meshing connection, make the motor drive the rotation axis with the running wheel is rotatory, make business turn over mechanism with the sealing mechanism begins.

The invention has the beneficial effects that: the invention completely separates the reaction area from the outside, greatly reduces the waste of liquid nitrogen dissipation, avoids the harsh requirement of ventilation environment during the cryogenic processing, reduces the traditional safety risk by using an automatic inlet and outlet device without an operator stretching into the liquid nitrogen to take out the metal piece, and simultaneously uses a mechanism for carrying the metal piece by atomization injection to repeatedly operate in a barrel to uniformly cool the metal piece, thereby reducing the occurrence of unqualified pieces.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the structure a-a in fig. 1.

Fig. 3 is an enlarged schematic view of B-B in fig. 2.

Fig. 4 is an enlarged schematic view of C-C in fig. 1.

Fig. 5 is a schematic diagram of the structure of D-D in fig. 4.

Fig. 6 is an enlarged schematic view of E in fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-6, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The automatic consumption reduction treatment equipment for the cryogenic processing of the metal material, which is described in conjunction with the attached drawings 1-6, comprises a cooling box 10 and a liquid nitrogen mechanism 100 arranged on the left side of the cooling box 10, wherein an in-out mechanism 101, a closing mechanism 102, a switching mechanism 103 and a power mechanism 104 are arranged on the right side of the cooling box 10, a cooling cavity 11 is arranged in the cooling box 10, and an operation mechanism 105 is arranged in the cooling cavity 11;

the operation mechanism 105 comprises a soft rack 26 located in the inner wall of the cooling cavity 11, one end of the soft rack 26 extends into the cooling cavity 11 and is uniformly connected with a connecting block 27, an operation box 28 is fixedly arranged on the inner side of the connecting block 27, an operation cavity 59 is arranged in the operation box 28, three resistance blocks 60 are uniformly arranged on the right wall of the operation cavity 59, two baffle plates 70 which are bilaterally symmetrical are fixedly arranged on the front and rear walls of the operation cavity 59, a sliding rod 71 which can slide back and forth and left and right is arranged on the operation box 7, a limiting ring 72 is arranged between the baffle plates 70 at two sides of the sliding rod 71 and limits the left and right movement range of the sliding rod, the left side of the limiting ring 72 is elastically connected with the right wall of the baffle plate 70 at the left side through a spring, the front side of the sliding rod 71 is elastically connected with the front wall of the operation cavity 59 through the spring, and the right end of the sliding rod 71, the right wall of the operation cavity 59 is provided with an opening communicated with the cooling cavity 11 at the front end of the resistance block 60 at the rearmost side, when the right end of the sliding rod 71 moves to the rearmost side, the resistance block 60 is popped out into the cooling cavity 11, the upper part of the placing plate 29 is provided with a placing plate 29 which can rotate along the right end, the lower side of the placing plate 29 is elastically connected with the bottom wall of the operation cavity 59 through a spring, the bottom wall of the operation cavity 59 is fixedly provided with a fixed base 81, the upper side of the fixed base 81 is provided with a rotatable lever 73, the left end of the lever 73 is provided with a lever push rod 80, the rear wall of the operation cavity 59 is fixedly provided with a rotating base 82, the front end of the rotating base 82 is rotatably provided with a rotating hook claw 79, the projection at the upper end of the rotating hook claw 79 is connected with a fixed hook claw 78, the upper end of the fixed hook claw 78 is fixedly connected with the placing plate, when the lever push rod 80 moves backwards, the connection of the fixed hook 78 can be released through the rotating hook 79, so that the placing plate 29 is sprung and rotated to the right side by the spring, the rear wall of the operating chamber 59 is provided with a spring roll 75, the inner side of the spring roll 75 is connected with the spring roll 75 extending to the rear side of the operating chamber 59, the threaded rod 74 is provided with a rotating gear 76 at the rear side of the operating box 28, the left side of the rotating gear 76 is engaged with a rack ring 77, the upper end of the rack ring 77 is connected with the lower side of the placing plate 29, and when the placing plate 29 is opened, the threaded rod 74 moves forwards to return the blocking plate 70 to the initial position.

The sealing mechanism 102 comprises an inlet pipe 16 connected to the right side of the cooling cavity 11, a left-right through inlet and outlet cavity 17 is arranged in the inlet pipe 16, two bilaterally symmetrical sealing plates 12 capable of moving up and down are arranged at two ends of the inlet and outlet cavity 17, the upper ends of the sealing plates 12 are rotatably connected with two ends of a lifting rod 13, a base 15 is fixedly arranged on the upper side of the inlet and outlet pipe 16, a rotating shaft 14 is arranged on the upper side of the base 15, the rotating shaft 14 is connected with the lifting rod 13, when the rotating shaft 14 rotates forwards or backwards, one side of the sealing plate 12 is opened to close one side, and therefore when a metal part enters and exits the inlet and outlet cavity 17, leakage and waste of liquid nitrogen are greatly reduced.

Beneficially, the liquid nitrogen mechanism 100 includes a liquid nitrogen box 32 located on the left side of the cooling box 10, a nitrogen spraying pipe 33 extending into the cooling chamber 11 is provided at the upper end of the liquid nitrogen box 32, an atomizing pipe 34 is connected to one end of the nitrogen spraying pipe 33 located in the cooling chamber 11, a nitrogen suction pipe 31 extending onto the left wall of the cooling chamber 11 is provided at the lower side of the liquid nitrogen box 32, a bottom spraying pipe 30 is provided on the bottom wall of the cooling chamber 11, when the device starts to operate, the liquid nitrogen box 32 sprays atomized liquid nitrogen to the metal parts in the cooling chamber 11 through the nitrogen spraying pipe 33 and the atomizing pipe 34, and the fallen liquid nitrogen is sprayed upwards through the bottom spraying pipe 30 for the second time, so as to cool the surface of the metal parts as uniformly as possible, and when the liquid nitrogen is deposited more, the liquid nitrogen is sucked through the nitrogen suction pipe 31 for the second spraying, and a certain depth of liquid nitrogen is left in the cooling chamber 11 in order to maintain the stability of, preventing sudden temperature increases from affecting the performance of the metal parts when insufficient liquid nitrogen is present in the liquid nitrogen tank 32.

Advantageously, the power mechanism 104 includes a support plate 22 extending from the lower side to the rear side of the inlet/outlet pipe 16, a motor 39 is fixedly disposed on the support plate 22, a main shaft 40 is dynamically connected to the front side of the motor 39, a driving bevel gear 43 is disposed on the main shaft 40, a driven bevel gear 38 is engaged and connected to the left side of the driving bevel gear 43, a driven wheel 36 is connected to the left side of the driven bevel gear 38 through a driven shaft 37, a connecting wheel 35 is dynamically connected to the upper side of the driven wheel 36, the left side of the connecting wheel 35 of the nitrogen injection pipe 3 extends to the inner side of the cooling box 10 and is engaged and connected to the soft rack 26, so as to provide power for the overall operation of the operation mechanism 105, and only one power port covered by the soft rack 26 is formed on the side.

Advantageously, the in-out mechanism 101 comprises a bottom plate 19 located on the bottom wall of the in-out chamber 17, two pushing blocks 18 symmetrically extending inward are provided at both ends of the upper side of the bottom plate 19, a rotating power shaft 87 is connected to the inner side of the middle portion of the bottom plate 19, a rotating wheel 55 is connected to the front end of the power shaft 87, a sliding plate 56 capable of sliding on the upper surface of the bottom plate 19 is engaged at the upper end of the rotating wheel 55, a vane European-rotating plate 58 is connected to the middle portion of the upper side of the sliding plate 56, a supporting block 57 is rotatably connected to the upper end of the rotating plate 58, two sliding boxes 83 symmetrically sliding on both ends of the upper side of the sliding plate 56, a sliding chamber 84 is provided in the sliding boxes 83, a sliding core 85 is slidably provided in the sliding chamber 84, the lower side of the sliding core 85 is elastically connected to the bottom wall of the sliding chamber 84 by a spring, a sliding, the upper ends of the sliding box rods 86 at two sides abut against two ends of the supporting block 57, the inner sides of the sliding boxes 83 at two sides are elastically connected with one side of the rotating plate 58 through springs, when the rotating wheel 55 rotates to drive the sliding plate 56 to move leftwards integrally, the pushing block 18 at the left side impacts the sliding box 83 at the left side to enable the supporting block 57 to incline leftwards, otherwise, the supporting block 57 inclines rightwards, and the purpose of receiving and placing metal parts is achieved.

Advantageously, the switching mechanism 103 includes an impact switch 25 located on the upper side of the connecting block 27 on the right wall of the cooling chamber 11, a control wire 24 extending to the lower side of the inlet/outlet pipe 16 is provided on the right side of the impact switch 25, an air pump 23 is fixedly provided on the lower side of the inlet/outlet pipe 16, the left side of the air pump 23 is connected to the control wire 24, a push switch 20 fixed to the lower side of the inlet/outlet pipe 16 is connected to the right side of the air pump 23 through a support plate 22, an air inlet pipe 54 is provided on the rear side of the air pump 23, a push box 49 is fixedly provided in the support plate 22, a push chamber 50 is provided in the push box 49, a push slide core 51 is slidably provided in the push chamber 50, the lower side of the push slide core 51 is elastically connected to the bottom wall of the push chamber 50 through a push spring 53, one end of the air inlet pipe 54, one end of the power shaft 87 extends to the upper side of the push rod 52 and is connected with a spline 48, the position of the power shaft 87 corresponds to the position of the main shaft 40, the front end of the main shaft 40 is connected with a driving belt pulley 41 without power, the front side of the driving belt pulley 41 is provided with a belt pulley cavity 46 with a forward opening, a spline spring 47 elastically connected with the spline 48 is arranged on the rear wall of the pulley cavity 46, the upper side of the belt pulley cavity 46 is connected with a driven belt pulley 44 through a belt 45, the front side of the driven belt pulley 44 is in power connection with the rotating shaft 14, when the bump switch 25 or the push switch 20 is triggered, the push rod 52 can be lifted to move the spline 48 into the pulley cavity 46 and into engagement with the pulley, so that the motor 39 rotates the rotating shaft 14 and the rotating wheel 55, and the access mechanism 101 and the closure mechanism 102 start to operate.

Sequence of mechanical actions of the whole device:

1. at the beginning, the operator triggers the push switch 20 to connect the spline 48 with the driving pulley 41 through the support plate 22, the air pump 23, the air inlet pipe 54, the push slide core 51 and the push rod 52;

2. at the moment, the motor 39 is started to open the right closing plate 12 through the main shaft 40, the driving belt pulley 41, the belt 45, the driven belt pulley 44, the rotating shaft 14 and the lifting rod 13, meanwhile, the driving belt pulley 41 integrally moves the sliding plate 56 rightwards through the spline 48, the power shaft 87 and the rotating wheel 55, the right sliding box 83 contacts the push block 18 to enable the supporting block 57 to incline rightwards, and metal parts are filled on the supporting block 57;

3. the motor 39 rotates reversely to transport the metal parts on the supporting block 57 to the upper side of the placing plate 29, at the moment, the motor 39 starts to operate in the cooling cavity 11 through the main shaft 40, the driving bevel gear 43, the driven bevel gear 38, the driven shaft 37, the driven wheel 36, the connecting wheel 35, the driving soft rack 26, the connecting block 27, the operation box 28, the placing plate 29 and the metal parts on the upper side integrally, and meanwhile, the filling step is continuously repeated to fill metal parts on the placing plate 29, so that an operator can be prevented from directly contacting liquid nitrogen;

4. at the moment, the liquid nitrogen tank 32 is started to spray liquid nitrogen to the metal piece in the cooling cavity 11 through the nitrogen spraying pipe 33 and the atomizing pipe 34, and cryogenic processing is started;

5. because the metal parts enter at different time, when the metal parts rotate for one circle, the sliding rod 71 in the operation box 28 with the front side cooled extends out of the operation cavity 59 through the opening at the front side of the resistance block 60, and when the sliding rod 71 in the operation box 28 at the rear side contacts and impacts the impact switch 25, the sliding rod 71 can move forwards by one under the driving of inertia until the sliding rod extends out of the resistance block 60 with the opening and extends to the right side of the operation box 28;

6. at the same time, the sliding rod 71 extends out of the running box 28 outside the running cavity 59, the cooling of the metal parts loaded on the upper side is completed, at this time, when the sliding rod 71 impacts the impact switch 25, the placing plate 29 is turned up to the right under the action of the spring through the lever 73, the lever push rod 80, the rotating hook 79 and the fixed hook 78, at the same time, the impact switch 25 triggers the air pump 23 through the control line 24, so that the sliding plate 56 comes to the leftmost side in advance, and the metal parts turned out by the placing plate 29 fall on the supporting block 57;

7. when the placing plate 29 is turned over, the sliding rod 71 is pushed back to the original position through the rack ring 77, the rotating gear 76, the spring roll 75 and the threaded rod 74, and the placing plate 29 is pulled down again through the rack ring 77 under the action of the spring roll 75, so that the rotating hook claw 79 is buckled on the rotating hook claw 79 and returns to the original position to wait for the entering of the next metal piece;

8. the metal piece cooled on the supporting block 57 is conveyed to the right side of the inlet and outlet pipe 16 through the operation of the motor 39 and is taken out, and the deep cooling processing of the metal piece is completed.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.