Pressurizing tempering furnace with hot air circulation

Abstract

The invention belongs to the technical field of tempering furnaces, and particularly relates to a pressurized tempering furnace with hot air circulation. Comprising a furnace body; a supporting frame plate is arranged in the furnace body, a heat-proof box is arranged at the top of the supporting frame plate, a lock clamp positioning device is arranged on the heat-proof box, and a workpiece is located at the top of the heat-proof box; the two sides of the heat-proof box are further provided with setting bottom plates, and workpieces are placed on the setting bottom plates. The lock clamp positioning device further comprises two sets of bent square rods located on the two sides of the workpiece, and the number of each set of bent square rods is two, and the bent square rods are symmetrically distributed. A locking base plate is installed at one end point of the bending square rod, a locking square barrel is arranged on the side, close to a workpiece, of the locking base plate, and a welt adaptation unit is further arranged on the locking square barrel. By means of the lock clamp positioning device, it is avoided that when tempering operation is conducted on different workpieces, clamps matched with the lock clamp positioning device need to be replaced for clamping, the working intensity of workers is reduced, the equipment can conduct clamping operation on the workpieces in different shapes, and the using effect of the equipment is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of tempering furnaces, in particular to a pressurized tempering furnace with hot air circulation. Background Art

[0002] Many metal parts such as hardware parts or auto parts need to be quenched to increase surface strength in order to improve their wear resistance and contact hardness to meet design requirements. After quenching, parts and other workpieces need to be tempered in a tempering furnace to eliminate the internal stress caused by quenching, reduce the hardness of the material, improve toughness and plasticity, and give the workpiece good comprehensive mechanical properties. The tempering furnace generates heat through heating elements (such as resistance wires) to increase the temperature in the furnace. The heated air exchanges heat with the workpiece in the furnace. After absorbing heat, the internal structure of the workpiece changes, thereby achieving the purpose of tempering.

[0003] During the tempering process, in order to ensure that all parts of the metal workpiece are heated evenly and to avoid thermal stress concentration, deformation or even cracking of the metal workpiece due to local temperature differences, it is necessary to set up hot air circulation in the tempering furnace, which can effectively avoid the occurrence of the above-mentioned phenomenon; however, the existing equipment has certain limitations during use. For some metal workpieces with more complex shapes, the original clamps are often unable to directly clamp them effectively. It is necessary to replace the special clamps that are compatible with them in order to properly fix the metal workpiece in the furnace for tempering operations. This process not only increases the workload of the operators, but also makes the equipment less flexible when dealing with metal workpieces of different shapes. If the metal workpiece is just placed randomly in the furnace, the heat wave in the furnace may easily cause the position of the metal workpiece to change or shake during tempering, which may easily have an adverse effect on the tempering quality of the metal workpiece, thereby reducing the use effect of the equipment. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a pressurized tempering furnace with hot air circulation, which effectively solves the problems in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pressurized tempering furnace with hot air circulation, comprising a furnace body; a support frame plate is provided in the furnace body, a heat-proof box is provided on the top of the support frame plate, a locking clamp positioning device is provided on the heat-proof box, and the locking clamp positioning device is used to position the four sides of the workpiece, and the workpiece is located on the top of the heat-proof box; positioning base plates are also installed on both sides of the heat-proof box, and the workpiece is placed on the positioning base plates; the locking clamp positioning device also includes two groups of bending square rods located on both sides of the workpiece, and the number of bending square rods in each group is two and symmetrically distributed; a locking substrate is installed at one end point of the bending square rod, and a locking square tube is provided on the side of the locking substrate close to the workpiece, and an edge-fitting adapter unit is also provided on the locking square tube, and the edge-fitting adapter unit is used to clamp workpieces with complex shapes; a U-shaped substrate is installed on the side of the locking substrate, and a bidirectional screw rod is provided on the inner opposite side of the U-shaped substrate, and a stop balancing structure is provided on the bidirectional screw rod, and the stop balancing structure is used to limit the position of the workpiece.

[0006] Preferably, the edge adaptation unit includes an air outlet cylinder arranged on the locking square cylinder, and the two are connected; the output ends of the two air outlet cylinders at the two bent square rods of each group are arranged opposite to each other; the output end of the air outlet cylinder is slidably connected with a guide cylinder, and a pressure U-seat is installed at the end of the guide cylinder away from the locking square cylinder, and a pressure round wheel is connected inside the pressure U-seat; a guide tooth column is also installed on the pressure U-seat, and a guide base is slidably connected to the guide tooth column, and the guide base is fixedly connected to the locking base plate; the guide tooth column is meshingly connected with a guide gear, and the guide gear is installed at the middle end position of the bidirectional screw rod; a guide spring is sleeved on the guide tooth column, one end of the guide spring is connected to the pressure U-seat, and the other end is connected to the guide base.

[0007] Preferably, an auxiliary U-seat is installed on the bent square rod, and the inner opposite surfaces of the auxiliary U-seat are commonly connected with an auxiliary sliding column, and an auxiliary base plate is slidably connected to the auxiliary sliding column, and a pressure-bearing inclined block is installed on the top of the auxiliary base plate, and the inclined surface on the pressure-bearing inclined block is away from the workpiece and toward the pressure wheel; the inclined surface of the pressure-bearing inclined block is located on the moving path of the pressure wheel; an auxiliary spring is sleeved on the auxiliary sliding column, one end of the auxiliary spring is fixedly connected to the auxiliary U-seat, and the other end is fixedly connected to the auxiliary base plate.

[0008] Preferably, a driving motor is provided in the heat-proof box, and the output end of the driving motor passes through the top of the heat-proof box and is connected to a driving gear; the driving gear is meshingly connected to two symmetrical positioning toothed discs, and a positioning column is provided on the side of the top of the positioning toothed disc away from the driving gear; a matrix cross block is also provided on the top of the positioning toothed disc, and a penetrating matrix cross groove is provided on the top of the matrix cross block, and the matrix cross groove slides with the positioning column; the opposite back surfaces of the two matrix cross blocks are respectively connected to two groups of bent square rods; a positioning shaft is installed on the positioning toothed disc, and a positioning base is installed on the positioning shaft, and the positioning base is fixedly connected to the heat-proof box.

[0009] Preferably, two symmetrical positioning slides are also installed on the side of the matrix cross block, and the positioning slide is slidably connected to the first substrate, and the first substrate is fixedly connected to the heat-proof box; a locking square column is slidably connected to the locking square cylinder, and a locking square block is installed at one end of the locking square column close to the workpiece, and a rubber buffer pad is also provided on the locking square block, and the side wall of the workpiece is located on the moving path of the rubber buffer pad; a locking spring is also provided in the locking square cylinder, one end of the locking spring is fixedly connected to the inner bottom surface of the locking square cylinder, and the other end is fixedly connected to the end point of the locking square column located in the locking square cylinder.

[0010] Preferably, a pressure-bearing base block is provided on the side of the pressure-bearing inclined block away from the pressure wheel, and a plurality of groups of deformable fitting parts are provided on the pressure-bearing base block; each group of deformable fitting parts includes a limiting cylinder, and the limiting cylinder is connected to a side of the pressure-bearing base block close to the workpiece, and the two are slidably matched; a fixing semi-ring block is installed at the end of the limiting cylinder close to the workpiece, and a rubber bag is provided in the fixing semi-ring block, and the side wall of the workpiece is located on the moving path of the rubber bag; a limiting spring is sleeved on the limiting cylinder, and one end of the limiting spring is fixedly connected to the fixing semi-ring block, and the other end is fixedly connected to the pressure-bearing base block.

[0011] Preferably, a pressure-driven gas-making mechanism is also provided on the pressure-bearing base block; the pressure-driven gas-making mechanism comprises a retaining frame fixedly arranged on the pressure-bearing base block, a gas-making square box is installed in the retaining frame, and the gas-making square box is located on the side of the pressure-bearing base block away from the workpiece; the opening of the gas-making square box faces the workpiece; a pressure-driven square plate is slidably connected in the gas-making square box, and a side of the pressure-driven square plate close to the workpiece is also equipped with pressure-driven square columns with the same number and position as the limiting cylinder, and the pressure-driven square columns are located on the moving path of the limiting cylinder.

[0012] Preferably, a plurality of brake springs are also provided in the gas making box, one end of the brake spring is fixedly connected to the side of the pressing square plate away from the workpiece, and the other end is fixedly connected to the inner bottom surface of the gas making box; two high-pressure gas pipes are also symmetrically installed on the side of the gas making box away from the workpiece, one high-pressure gas pipe is located at the top of the gas making box and the output end is facing the top of the workpiece; the other high-pressure gas pipe is located at the bottom of the gas making box and the output end is facing the bottom of the workpiece.

[0013] Preferably, the stop balancing structure includes two stop blocks symmetrically installed on the bidirectional screw rod, the two stop blocks are slidably connected to a stop slide column, and the two ends of the stop slide column are fixedly connected to the inner opposite surfaces of the U-shaped base plate; the two stop blocks are respectively located at the top and bottom of the workpiece.

[0014] Preferably, a second substrate is mounted on each of the two stop blocks, elastic columns are connected to the opposite surfaces of the two second substrates, stop rubber blocks are connected to the opposite ends of the two elastic columns, and the top and bottom of the workpiece are respectively located on the moving paths of the two stop rubber blocks.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The pressure-bearing base block moves, and under the action of the limit cylinder and the limit spring, the retaining semi-ring block is driven to move, so that the rubber bag on it contacts the irregular side wall of the workpiece. Through the continued movement of the pressure-bearing base block, the limit spring is in a buffering state, thereby continuously applying pressure to the rubber bag. Since the rubber bag has good flexibility, it changes its shape under a certain pressure, so that the side wall of the rubber bag fits the irregular side wall of the workpiece, and can bend and stretch according to the shape of the side wall, so that the rubber bag completely fits the side wall of the workpiece, that is, fits the contour of the workpiece, so that the workpiece can be effectively clamped, and the number of rubber bags is several, and they are distributed on the left and right side walls of the workpiece. In addition, the rubber bag completely fits the side wall of the irregular workpiece, so that the equipment can clamp some workpieces with more complex shapes and clamp them in the furnace for tempering operations, avoiding the need to replace the matching clamps for clamping different workpieces when tempering, reducing the work intensity of the staff, avoiding the lack of flexibility of the equipment in dealing with metal workpieces of different shapes, enabling the equipment to clamp workpieces of different shapes, reducing the limitations of the equipment when in use, thereby clamping the workpiece in the furnace for tempering to avoid factors such as shaking affecting the tempering effect, improving the tempering quality of the workpiece and the use effect of the equipment;

[0017] (2) The locking base plate is driven to move toward the workpiece under the action of the two sets of bent square rods, so that the locking block is driven to move under the action of the locking square tube, the locking square column and the locking spring, so that it approaches the side wall of the workpiece and contacts it, so that both ends of the left and right sides of the workpiece contact with the locking block, thereby positioning the workpiece at the current position, avoiding the shaking of the workpiece caused by the heat wave caused by the internal hot air circulation during the tempering process, improving the stability of the workpiece during tempering, and improving the tempering effect; the friction between the locking block and the workpiece is increased by the provided rubber buffer pad, avoiding the dislocation of the workpiece during the tempering process, and the elasticity of the rubber buffer pad can also absorb the impact force generated by the heat wave encountered by the workpiece during the tempering process, avoiding damage to the workpiece in the early tempering stage, and improving the tempering efficiency of the workpiece and the use effect of the equipment;

[0018] (3) Since the threads at both ends of the bidirectional screw are opposite, the two stop blocks connected by the threads are moved within the upper limit of the stop slide column, so that the two stop blocks move relative to each other. Under the action of the second substrate and the elastic column, the stop rubber block is driven to move, so that the stop rubber blocks around the bottom and top of the workpiece are moved toward the workpiece, thereby limiting the overall position of the workpiece, avoiding the workpiece from being dislocated or shaking during the tempering process, and improving the tempering effect of the workpiece. At the same time, this operation is performed after positioning both sides of the workpiece, so that the workpiece can be limited and positioned in multiple directions. The stop rubber blocks around the bottom of the workpiece can also support the workpiece, which improves the use effect of the equipment. Through the buffering brought by the plurality of elastic columns, workpieces of different thicknesses can be positioned, and the impact force on the workpiece during tempering can be reduced, thereby improving the tempering effect of the workpiece and reducing the limitations of the equipment during use.

[0019] (4) Since the shape of the workpiece is relatively complex, that is, the irregular edges, the contact time between the locking blocks on the four sides and the workpiece is different. When one of the locking blocks contacts the workpiece, the other three have not yet contacted the workpiece. At this time, the locking block can continue to move by continuing to operate the locking block, so that the locking block that contacts the workpiece cannot continue to move, and is thus limited there, so that the locking column on the locking block moves within the locking cylinder, so that the locking spring is in a buffering state until the remaining locking blocks contact the side wall of the workpiece, thereby limiting the four sides of the workpiece and effectively clamping workpieces of different shapes, reducing the workload of the staff and reducing the limitations of the equipment when in use;

[0020] (5) When the workpiece is tempered and the limit on the matrix horizontal block needs to be released, the drive motor is started again to continue to drive the drive gear to rotate, so that the positioning column continues to move on the matrix horizontal groove, so that the two matrix horizontal blocks move away from each other, that is, the positioning gear plate continues to rotate half a circle, that is, when the positioning gear plate rotates one circle, the two matrix horizontal blocks complete a relative and opposite movement. The previous half circle is to limit the workpiece, and the latter half circle is to release the limit on the workpiece, so as to drive the locking block to move away from the workpiece, thereby releasing the limit setting on the workpiece, so that the workpiece can be taken out of the furnace body normally, so that the drive motor only needs to rotate in one direction to allow the locking block to complete the operation of limiting or releasing the limit on the workpiece, avoiding the use of a complex motor that is easy to damage when clamping the workpiece and causing the workpiece to dislocate. The use of a unidirectional driving motor has a simple structure, not only low cost, but also high reliability, good stability and simple control, which improves the clamping effect of the workpiece, so that the workpiece can be tempered stably in the furnace body, thereby further reducing the limitations of the equipment during use and improving the tempering effect of the metal workpiece;

[0021] (6) The continued movement of the pressure-bearing base block drives the gas-making box to move. At this time, the limiting cylinder cannot move further, so that the distance between the limiting cylinder and the compressive square plate in the gas-making box becomes smaller and smaller and contacts, so that the compressive square plate moves within the gas-making box within a limited position, so that the brake spring is in a buffering state, so that the gas inside the gas-making box is pressurized and flows out through two high-pressure gas pipes, and the high-pressure gas acts on the top and bottom of the workpiece, so that the impurities adhering to the workpiece can be removed, and the impurities adhering to the workpiece are prevented from affecting the tempering effect of the workpiece, so that the tempering quality of the workpiece can be improved; it is worth mentioning that after the tempering operation of the workpiece is completed, the distance between the compressive square plates and the distance between the limiting cylinders in the gas-making box gradually increases, and the reset of the brake spring drives the compressive square plate to reset and move, so that it resets and moves within the gas-making box, thereby generating suction, so that the gas-making box can suck the external gas into the gas-making box through the high-pressure gas pipe, and can suck the heat around the workpiece into the gas-making box, which is used to accelerate the cooling operation of the workpiece, thereby improving the tempering effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0023] In the attached picture:

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the heat protection box of the present invention;

[0026] Figure 3 This is a schematic diagram of the matrix transverse groove structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the internal structure of the furnace body of the present invention;

[0028] Figure 5 This is a schematic diagram of the positioning column structure of the present invention;

[0029] Figure 6 This is a cross-sectional view of the gas-making square box of the present invention;

[0030] Figure 7 This is a schematic diagram of the supporting frame structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the guide tooth column structure of the present invention;

[0032] Fig. 9 This is a cross-sectional view of the high-pressure gas transmission pipe of the present invention;

[0033] Fig.10This is a schematic diagram of the pressure-bearing base block structure of the present invention;

[0034] Fig.11 This is a schematic diagram of the rubber bag structure of the present invention;

[0035] In the figure: 1. furnace body; 2. support frame plate; 3. heat-proof box; 4. positioning bottom plate; 5. bending square rod; 6. locking base plate; 7. locking square tube; 8. U-shaped base plate; 9. bidirectional screw rod; 10. exhaust cylinder; 11. guide cylinder; 12. pressure U seat; 13. pressure round wheel; 14. guide tooth column; 15. guide base; 16. guide gear; 17. guide spring; 18. auxiliary U seat; 19. auxiliary sliding column; 20. auxiliary base plate; 21. pressure inclined block; 22. auxiliary spring; 23. drive motor; 24. drive gear; 25. positioning toothed disc; 26. positioning column; 27. matrix Horizontal block; 28. Matrix horizontal groove; 29. ​​Positioning shaft; 30. Positioning base; 31. Positioning slide column; 32. First substrate; 33. Locking square column; 34. Locking block; 35. Rubber buffer pad; 36. Locking spring; 37. Pressure base block; 38. Limiting cylinder; 39. Retaining semi-ring block; 40. Rubber bag; 41. Limiting spring; 42. Retaining frame; 43. Gas box; 44. Pressing square plate; 45. Pressing square column; 46. Braking spring; 47. High-pressure gas transmission pipe; 48. Stopping block; 49. Stopping slide column; 50. Second substrate; 51. Elastic column; 52. Stopping rubber block. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] Example, by Figures 1 to 11The present invention comprises a furnace body 1; a support frame plate 2 is arranged inside the furnace body 1, a heat-proof box 3 is arranged on the top of the support frame plate 2, a locking clamp positioning device is arranged on the heat-proof box 3, and the locking clamp positioning device is used to position the four sides of the workpiece, and the workpiece is located on the top of the heat-proof box 3; positioning base plates 4 are also installed on both sides of the heat-proof box 3, and the workpiece is placed on the positioning base plates 4; the locking clamp positioning device also includes two groups of bending square rods 5 located on both sides of the workpiece, and the number of bending square rods 5 in each group is two and symmetrically distributed; a locking substrate 6 is installed at one end point of the bending square rod 5, and the locking substrate 6 is close to the workpiece A locking square tube 7 is provided on one side of the workpiece, and an edge-fitting unit is also provided on the locking square tube 7, which is used to clamp workpieces with complex shapes; a U-shaped base plate 8 is installed on the side of the locking base plate 6, and a bidirectional screw rod 9 is provided on the inner side of the U-shaped base plate 8, and a stop balance structure is provided on the bidirectional screw rod 9, which is used to limit the position of the workpiece; a driving motor 23 is provided in the heat-proof box 3, and the output end of the driving motor 23 passes through the top of the heat-proof box 3 and is connected to a driving gear 24; the driving gear 24 is meshed and connected to two symmetrical positioning toothed discs 25, and the positioning A positioning column 26 is provided on the side of the top of the toothed disc 25 away from the driving gear 24; a matrix cross block 27 is also provided on the top of the positioning toothed disc 25, and a matrix cross groove 28 is provided on the top of the matrix cross block 27, and the matrix cross groove 28 is slidably matched with the positioning column 26; the opposite back surfaces of the two matrix cross blocks 27 are respectively connected to the two groups of bent square rods 5; a positioning shaft 29 is installed on the positioning toothed disc 25, and a positioning base 30 is installed on the positioning shaft 29, and the positioning base 30 is fixedly connected to the heat protection box 3; two symmetrical positioning slides are also installed on the side of the matrix cross block 27 The first base plate 32 is slidably connected to the positioning slide column 31, and the first base plate 32 is fixedly connected to the heat protection box 3; the locking square cylinder 7 is slidably connected to the locking square column 33, and a locking square block 34 is installed at one end of the locking square column 33 close to the workpiece, and a rubber buffer pad 35 is also provided on the locking square block 34, and the side wall of the workpiece is located on the moving path of the rubber buffer pad 35; the locking square cylinder 7 is also provided with a locking spring 36, one end of the locking spring 36 is fixedly connected to the inner bottom surface of the locking square cylinder 7, and the other end is fixedly connected to the end point of the locking square column 33 located in the locking square cylinder 7;

[0038] The metal workpiece to be tempered is placed on the positioning bottom plate 4 in the furnace body 1 for tempering. At this time, the driving motor 23 is started, so that its output end drives the driving gear 24 to rotate, and then the two meshing positioning toothed discs 25 are rotated synchronously, so that they rotate half a circle, so that the positioning column 26 on it slides in the matrix transverse groove 28 on the matrix transverse block 27. The initial position of the positioning column 26 is in the middle of the matrix transverse groove 28, so that the two matrix transverse blocks 27 move relative to each other, and under the action of the two sets of bent square rods 5, the locking base plate 6 is driven to move toward the direction of the workpiece, so that under the action of the locking square tube 7, the locking square column 33 and the locking spring 36, the locking square block 34 is driven to move so that it is close to the side wall of the workpiece and contact with it, so that both ends of the left and right sides of the workpiece are in contact with the locking block 34, so that the workpiece is positioned at the current position, avoiding the shaking of the workpiece caused by the heat wave caused by the internal hot air circulation during the tempering process, improving the stability of the workpiece during tempering, and improving the tempering effect; the friction between the locking block 34 and the workpiece is increased by the rubber buffer pad 35, avoiding the dislocation of the workpiece during the tempering process, and the elasticity of the rubber buffer pad 35 can also absorb the impact force generated by the heat wave encountered by the workpiece during the tempering process, avoiding damage to the workpiece in the early tempering stage, and improving the tempering efficiency of the workpiece and the use effect of the equipment;

[0039] Since the shape of the workpiece is relatively complex, that is, the irregular edges, the time when the locking blocks 34 on the four sides contact the workpiece is different. When one of the locking blocks 34 contacts the workpiece, the other three have not yet contacted the workpiece. At this time, the locking block 34 that contacts the workpiece cannot continue to move by continuing to operate the locking block 34, so that it is limited here, so that the locking column 33 on the locking block 34 moves in a limited position in the locking square tube 7, so that the locking spring 36 is in a buffering state until the remaining locking blocks 34 contact the side wall of the workpiece, so that the four sides of the workpiece can be limited, and workpieces of different shapes can be effectively clamped, which reduces the work intensity of the staff and reduces the limitations of the equipment when in use;

[0040] It is worth mentioning that when the matrix cross block 27 moves to the maximum position, the drive motor 23 can be stopped, so that the locking block 34 can be maintained in the current position to avoid movement due to non-human factors. At the same time, the matrix cross block 27 also maintains the current position. At this time, the positioning column 26 is in the middle position of the matrix cross groove 28, and the positioning gear plate 25 rotates half a circle; when the workpiece tempering is completed and the limit of the matrix cross block 27 needs to be released, the drive motor 23 is started again to continue to drive the drive gear 24 to rotate, so that the positioning column 26 continues to move on the matrix cross groove 28, so that the two matrix cross blocks 27 move away from each other, that is, the positioning gear plate 25 continues to rotate half a circle, that is, when the positioning gear plate 25 rotates one circle, the two matrix cross blocks 27 complete a relative and relative movement. The back moves, the first half circle is to limit the workpiece, and the second half circle is to release the limit on the workpiece, so as to drive the locking block 34 to move away from the workpiece, thereby releasing the limit setting on the workpiece, so that the workpiece can be taken out of the furnace body 1 normally, so that the driving motor 23 only needs to rotate in one direction to make the locking block 34 complete the operation of limiting or releasing the limit on the workpiece, avoiding the use of a complex motor that is easy to be damaged when clamping the workpiece and causing the workpiece to dislocate, and using a unidirectional rotating driving motor 23, due to its simple structure, not only is the cost low, but also the reliability is high, the stability is good and the control is simple, which improves the clamping effect of the workpiece, so that the workpiece can be stably tempered in the furnace body 1, thereby further reducing the limitations of the equipment during use and improving the tempering effect of the metal workpiece.

[0041] The edge fitting unit of this embodiment includes an air outlet cylinder 10 arranged on the locking square cylinder 7, and the two are connected; the output ends of the two air outlet cylinders 10 at the two bent square rods 5 of each group are arranged opposite to each other; the output end of the air outlet cylinder 10 is slidably connected with a guide cylinder 11, and the end of the guide cylinder 11 away from the locking square cylinder 7 is installed with a pressure U seat 12, and the pressure U seat 12 is connected with a pressure round wheel 13; the pressure U seat 12 is also installed with a guide tooth column 14, and the guide tooth column 14 is slidably connected with a guide base The guide base 15 is fixedly connected to the locking base 6; the guide tooth column 14 is meshedly connected with a guide gear 16, and the guide gear 16 is installed at the middle end of the bidirectional screw rod 9; the guide tooth column 14 is sleeved with a guide spring 17, one end of the guide spring 17 is connected to the pressure U seat 12, and the other end is connected to the guide base 15; the bending square rod 5 is installed with an auxiliary U seat 18, and the inner opposite surfaces of the auxiliary U seat 18 are commonly connected with an auxiliary sliding column 19, and the auxiliary sliding column 19 is slidably connected with the auxiliary base The auxiliary base plate 20 is provided with a pressure-bearing inclined block 21 on the top of the auxiliary base plate 20, and the inclined surface of the pressure-bearing inclined block 21 is away from the workpiece and faces the pressure circular wheel 13; the inclined surface of the pressure-bearing inclined block 21 is located on the moving path of the pressure circular wheel 13; the auxiliary sliding column 19 is provided with an auxiliary spring 22, one end of the auxiliary spring 22 is fixedly connected to the auxiliary U seat 18, and the other end is fixedly connected to the auxiliary base plate 20; the pressure-bearing inclined block 21 is provided with a pressure base block 37 on the side away from the pressure circular wheel 13, and a plurality of groups of deformation Fitting parts; Each group of deformable fitting parts includes a limiting cylinder 38, which is connected to the side of the pressure-bearing base block 37 close to the workpiece, and the two are slidably matched; a retaining semi-ring block 39 is installed at the end of the limiting cylinder 38 close to the workpiece, and a rubber bag 40 is arranged in the retaining semi-ring block 39, and the side wall of the workpiece is located on the moving path of the rubber bag 40; a limiting spring 41 is sleeved on the limiting cylinder 38, one end of the limiting spring 41 is fixedly connected to the retaining semi-ring block 39, and the other end is fixedly connected to the pressure-bearing base block 37;

[0042] When the locking block 34 contacts the side wall of the workpiece, the matrix cross block 27 continues to move, so that the locking square column 33 moves within the locking square cylinder 7, so that the gas inside enters the gas outlet cylinder 10 through the locking square cylinder 7 and acts on the guide cylinder 11, so that the guide cylinder 11 drives the pressure U seat 12 to move, so that it moves within the guide base 15 through the guide tooth column 14, so that the guide spring 17 is in a buffering state, so that when it is reset, it can drive the locking block 34 to reset and move, so as to facilitate the next clamping operation of the workpiece; The moving pressure wheel 13 contacts the inclined surface of the pressure inclined block 21, so that it moves to the upper limit position on the auxiliary sliding column 19 through the auxiliary base plate 20, so that the auxiliary spring 22 is in a buffering state, thereby driving the pressure base block 37 to move, so that the several groups of deformable fittings on it all move close to the workpiece, that is, under the action of the limiting cylinder 38 and the limiting spring 41, the retaining semi-ring block 39 is driven to move, so that the rubber bag 40 on it contacts the irregular side wall of the workpiece, and the pressure base block 37 continues to move, so that the limiting spring 41 is in a buffering state. Thereby, pressure is continuously applied to the rubber bag 40. Since the rubber bag 40 has good flexibility, it changes its own shape under a certain pressure, so that the side wall of the rubber bag 40 fits the irregular side wall of the workpiece and can bend and stretch according to the shape of the side wall, so that the rubber bag 40 completely fits the side wall of the workpiece, that is, fits the contour of the workpiece, so that the workpiece can be effectively clamped. The number of rubber bags 40 is several, and they are distributed on the left and right side walls of the workpiece. In addition, the rubber bag 40 completely fits the side wall of the irregular workpiece, so that the equipment can clamp some workpieces with more complex shapes and clamp them in the furnace for tempering operations, avoiding the need to replace matching clamps for clamping when tempering different workpieces, reducing the work intensity of the staff, avoiding the lack of flexibility of the equipment in dealing with metal workpieces of different shapes, enabling the equipment to clamp workpieces of different shapes, reducing the limitations of the equipment when in use, thereby clamping the workpiece in the furnace for tempering to avoid factors such as shaking affecting the tempering effect, improving the tempering quality of the workpiece and the use effect of the equipment.

[0043] The pressure-bearing base block 37 of the present embodiment is also provided with a pressure-actuated gas-making mechanism; the pressure-actuated gas-making mechanism comprises a retaining frame 42 fixedly arranged on the pressure-bearing base block 37, a gas-making square box 43 is installed in the retaining frame 42, and the gas-making square box 43 is located on the side of the pressure-bearing base block 37 away from the workpiece; the opening of the gas-making square box 43 faces the workpiece; a pressure-actuated square plate 44 is slidably connected in the gas-making square box 43, and a pressure-actuated square column 45 with the same number and position as the limiting cylinder 38 is also installed on the side of the pressure-actuated square plate 44 close to the workpiece, and the pressure-actuated square column 45 is located on the side of the pressure-actuated square plate 44 close to the workpiece. On the moving path of the limiting cylinder 38; a plurality of brake springs 46 are also arranged in the gas making box 43, one end of the brake spring 46 is fixedly connected to the side of the pressing square plate 44 away from the workpiece, and the other end is fixedly connected to the inner bottom surface of the gas making box 43; two high-pressure gas pipes 47 are symmetrically installed on the side of the gas making box 43 away from the workpiece, one high-pressure gas pipe 47 is located at the top of the gas making box 43 and the output end is facing the top of the workpiece; the other high-pressure gas pipe 47 is located at the bottom of the gas making box 43 and the output end is facing the bottom of the workpiece;

[0044] When the rubber bag 40 on the retaining half ring block 39 contacts the workpiece, it indicates that the workpiece needs to be clamped. The pressure-bearing base block 37 continues to move, which drives the gas-making box 43 to move. At this time, the limiting cylinder 38 cannot move further, so that the distance between the limiting cylinder 38 and the pressing square plate 44 in the gas-making box 43 becomes smaller and smaller and contacts, so that the pressing square plate 44 moves within the gas-making box 43, so that the brake spring 46 is in a buffering state, so that the gas inside the gas-making box 43 is pressurized and flows out through two high-pressure gas pipes 47, and the high-pressure gas acts on the top and bottom of the workpiece, so that the impurities adhering to the workpiece can be removed. It is worth mentioning that after the workpiece tempering operation is completed, the spacing between the pressing square plate 44 and the limiting cylinder 38 in the gas making box 43 gradually increases, and the braking spring 46 is reset to drive the pressing square plate 44 to reset and move, so that it can reset and move in the gas making box 43, thereby generating suction, so that the gas making box 43 can suck the external gas into the gas making box 43 through the high-pressure gas pipe 47, and can suck the heat around the workpiece into the gas making box 43, which is used to accelerate the cooling operation of the workpiece and improve the tempering effect of the equipment.

[0045] The stop balancing structure of this embodiment includes two stop blocks 48 symmetrically mounted on the bidirectional screw 9, the two stop blocks 48 are slidably connected to a stop slide 49, and the two ends of the stop slide 49 are fixedly connected to the inner opposite surfaces of the U-shaped base plate 8; the two stop blocks 48 are respectively located at the top and bottom of the workpiece; the two stop blocks 48 are both mounted with a second base plate 50, the opposite surfaces of the two second base plates 50 are both connected with an elastic column 51, and the opposite ends of the two elastic columns 51 are both connected with a stop rubber block 52, and the top and bottom of the workpiece are respectively located on the moving paths of the two stop rubber blocks 52;

[0046] When the guide tooth column 14 moves, it will drive the meshing guide gear 16 to rotate, so that the bidirectional screw 9 on it rotates. Since the threads at both ends of the bidirectional screw 9 are opposite, the two stop blocks 48 connected by the thread are moved on the stop slide column 49 to the upper limit, so that the two stop blocks 48 move relative to each other. Under the action of the second base plate 50 and the elastic column 51, the stop rubber block 52 is driven to move, so that the stop rubber blocks 52 around the bottom and top of the workpiece are moved toward the workpiece, so that the overall position of the workpiece can be limited to avoid dislocation or shaking of the workpiece during the tempering process, thereby improving the tempering effect of the workpiece. At the same time, this operation is after positioning the two sides of the workpiece, so that the workpiece can be limited and positioned in multiple directions. The stop rubber blocks 52 around the bottom of the workpiece can also support the workpiece, thereby improving the use effect of the equipment. Through the buffering brought by the plurality of elastic columns 51, workpieces of different thicknesses can be positioned, and the impact force on the workpiece during tempering can be reduced, thereby improving the tempering effect of the workpiece and reducing the limitations of the equipment during use.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressurized tempering furnace with hot air circulation, comprising a furnace body (1); characterized in that: A support frame plate (2) is provided in the furnace body (1), a heat-proof box (3) is provided on the top of the support frame plate (2), a locking clamp positioning device is provided on the heat-proof box (3), and the locking clamp positioning device is used to position the four sides of the workpiece, and the workpiece is located on the top of the heat-proof box (3); positioning bottom plates (4) are also installed on both sides of the heat-proof box (3), and the workpiece is placed on the positioning bottom plates (4); the locking clamp positioning device also includes two groups of bent square rods (5) located on both sides of the workpiece, and the number of each group of bent square rods (5) is two and they are symmetrically distributed. A locking base plate (6) is installed at one end of the bent square rod (5), and a locking square tube (7) is provided on the side of the locking base plate (6) close to the workpiece, and an edge-fitting unit is also provided on the locking square tube (7), and the edge-fitting unit is used to clamp the workpiece with a complex shape; a U-shaped base plate (8) is installed on the side of the locking base plate (6), and a bidirectional screw rod (9) is provided on the inner side of the U-shaped base plate (8), and a stop balancing structure is provided on the bidirectional screw rod (9), and the stop balancing structure is used to limit the position of the workpiece.

2. A pressurized tempering furnace with hot air circulation according to claim 1, characterized in that: The edge fitting unit comprises an air outlet cylinder (10) arranged on the locking square cylinder (7), and the two are connected; the output ends of the two air outlet cylinders (10) at the two bent square rods (5) of each group are arranged opposite to each other; the output end of the air outlet cylinder (10) is slidably connected to a guide cylinder (11), and a pressure U seat (12) is installed at one end of the guide cylinder (11) away from the locking square cylinder (7), and a pressure round wheel (13) is connected inside the pressure U seat (12); the pressure U seat (12) is also provided with a pressure wheel (13) A guide tooth column (14) is installed, and a guide base (15) is slidably connected to the guide tooth column (14), and the guide base (15) is fixedly connected to the locking base (6); the guide tooth column (14) is meshingly connected with a guide gear (16), and the guide gear (16) is installed at the middle end position of the bidirectional screw rod (9); a guide spring (17) is sleeved on the guide tooth column (14), one end of the guide spring (17) is connected to the pressure U seat (12), and the other end is connected to the guide base (15).

3. A pressurized tempering furnace with hot air circulation according to claim 2, characterized in that: An auxiliary U-seat (18) is installed on the bent square rod (5), and the inner opposite surfaces of the auxiliary U-seat (18) are commonly connected to an auxiliary sliding column (19), and an auxiliary base plate (20) is slidably connected to the auxiliary sliding column (19), and a pressure-bearing inclined block (21) is installed on the top of the auxiliary base plate (20), and the inclined surface on the pressure-bearing inclined block (21) is away from the workpiece and faces the pressure circular wheel (13); the inclined surface of the pressure-bearing inclined block (21) is located on the moving path of the pressure circular wheel (13); an auxiliary spring (22) is sleeved on the auxiliary sliding column (19), and one end of the auxiliary spring (22) is fixedly connected to the auxiliary U-seat (18), and the other end is fixedly connected to the auxiliary base plate (20).

4. A pressurized tempering furnace with hot air circulation according to claim 1, characterized in that: A driving motor (23) is provided in the heat protection box (3), and the output end of the driving motor (23) passes through the top of the heat protection box (3) and is connected to a driving gear (24); the driving gear (24) is meshedly connected to two symmetrical positioning toothed discs (25), and a positioning column (26) is provided on the top of the positioning toothed disc (25) away from the driving gear (24); a matrix cross block (27) is also provided on the top of the positioning toothed disc (25), and a matrix cross groove (28) is provided on the top of the matrix cross block (27) to penetrate, and the matrix cross groove (28) is slidably matched with the positioning column (26); the opposite back surfaces of the two matrix cross blocks (27) are respectively connected to two groups of bent square rods (5); a positioning rotating shaft (29) is installed on the positioning toothed disc (25), and a positioning base (30) is installed on the positioning rotating shaft (29), and the positioning base (30) is fixedly connected to the heat protection box (3).

5. A pressurized tempering furnace with hot air circulation according to claim 4, characterized in that: The side of the matrix horizontal block (27) is also provided with two symmetrical positioning slides (31), and a first base plate (32) is slidably connected to the positioning slide (31), and the first base plate (32) is fixedly connected to the heat protection box (3); a locking square column (33) is slidably connected to the locking square cylinder (7), and a locking square block (34) is installed at one end of the locking square column (33) close to the workpiece, and a rubber buffer pad (35) is also provided on the locking square block (34), and the side wall of the workpiece is located on the moving path of the rubber buffer pad (35); a locking spring (36) is also provided in the locking square cylinder (7), and one end of the locking spring (36) is fixedly connected to the inner bottom surface of the locking square cylinder (7), and the other end is fixedly connected to the end point of the locking square column (33) located in the locking square cylinder (7).

6. A pressurized tempering furnace with hot air circulation according to claim 3, characterized in that: A pressure-bearing base block (37) is provided on the side of the pressure-bearing inclined block (21) away from the pressure wheel (13), and a plurality of groups of deformable fitting parts are provided on the pressure-bearing base block (37); each group of deformable fitting parts includes a limiting cylinder (38), and the limiting cylinder (38) is connected to the side of the pressure-bearing base block (37) close to the workpiece, and the two are slidably matched; a fixing semi-ring block (39) is installed on the end of the limiting cylinder (38) close to the workpiece, and a rubber bag (40) is provided in the fixing semi-ring block (39), and the side wall of the workpiece is located on the moving path of the rubber bag (40); a limiting spring (41) is sleeved on the limiting cylinder (38), and one end of the limiting spring (41) is fixedly connected to the fixing semi-ring block (39), and the other end is fixedly connected to the pressure-bearing base block (37).

7. A pressurized tempering furnace with hot air circulation according to claim 6, characterized in that: The pressure-bearing base block (37) is also provided with a pressure-driven gas-making mechanism; the pressure-driven gas-making mechanism comprises a retaining frame (42) fixedly arranged on the pressure-bearing base block (37), a gas-making square box (43) is installed in the retaining frame (42), and the gas-making square box (43) is located on the side of the pressure-bearing base block (37) away from the workpiece; the opening of the gas-making square box (43) faces the workpiece; a pressure-driven square plate (44) is slidably connected in the gas-making square box (43), and a pressure-driven square column (45) having the same number and position as the limiting cylinder (38) is also installed on the side of the pressure-driven square plate (44) close to the workpiece, and the pressure-driven square column (45) is located on the moving path of the limiting cylinder (38).

8. A pressurized tempering furnace with hot air circulation according to claim 7, characterized in that: The gas making box (43) is also provided with a plurality of brake springs (46), one end of the brake spring (46) is fixedly connected to the side of the pressing square plate (44) away from the workpiece, and the other end is fixedly connected to the inner bottom surface of the gas making box (43); two high-pressure gas supply pipes (47) are also symmetrically installed on the side of the gas making box (43) away from the workpiece, one high-pressure gas supply pipe (47) is located at the top of the gas making box (43) and its output end is facing the top of the workpiece; the other high-pressure gas supply pipe (47) is located at the bottom of the gas making box (43) and its output end is facing the bottom of the workpiece.

9. The pressurized tempering furnace with hot air circulation according to claim 1, characterized in that: The stop balancing structure comprises two stop blocks (48) symmetrically mounted on a bidirectional screw rod (9); the two stop blocks (48) are slidably connected to a stop slide column (49); the two ends of the stop slide column (49) are fixedly connected to opposite inner surfaces of the U-shaped base plate (8); the two stop blocks (48) are respectively located at the top and bottom of the workpiece.

10. A pressurized tempering furnace with hot air circulation according to claim 9, characterized in that: A second base plate (50) is mounted on each of the two stop blocks (48); opposite surfaces of the two second base plates (50) are connected to elastic columns (51); opposite ends of the two elastic columns (51) are connected to stop rubber blocks (52); and the top and bottom of the workpiece are respectively located on the moving paths of the two stop rubber blocks (52).

Images