A stamping device for a compressor housing

Abstract

The present invention relates to the technical field of stamping equipment, and specifically discloses a stamping device for a compressor casing, comprising: a fixed seat, a stamping head, a discharge table and a stamping die, the stamping die has a die cavity, the stamping head is fixed on the fixed seat, the discharge table is elastically connected to the fixed seat in vertical movement; a receiving groove for receiving a metal plate to be stamped is provided at the bottom of the die cavity, and a positioning module is also provided on the stamping die; a plurality of mounting cavities evenly spaced along the circumference of the die cavity are provided on the lower surface of the stamping die. The beneficial effects of the present invention are as follows: during the stamping process, the clamping member always abuts against the outer side of the metal plate to avoid the metal plate from shifting during the stamping process, after the stamping is completed, the stamping die rises, the guide block enters the vertical section, the push spring is released, the push protrusion enters the limit groove, the guide block moves downward along the vertical section, and during the downward movement of the bearing block, the formed workpiece is driven to move downward, helping the formed workpiece to escape from the die cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of stamping equipment, and particularly relates to a stamping device for a compressor housing. Background Art

[0002] An air compressor is a device used to compress gas. Generally, it is the main body in a gas source device. It is a device that converts the mechanical energy of a prime mover (usually an electric motor) into gas pressure energy and is a gas pressure generating device for compressed air. The air compressor is similar in structure to a water pump. Most air compressors are reciprocating piston type, rotary vane or rotary screw. Most common compressors are composed of components such as an oil circulation system, a gas circuit circulation system, a water circuit circulation system, and a power distribution system. During the production process, the above components need to be installed in a metal housing, which is generally welded by a housing body and a tail cover. The tail cover is formed by stamping a circular iron sheet (plate).

[0003] Chinese Patent with the authorization announcement number CN215391870U discloses a fixing device for positioning the processing of a compressor housing. The patent includes a stamping seat. A longitudinal groove is opened on the top surface of the stamping seat. The number of the longitudinal grooves is three, and the three longitudinal grooves are evenly distributed in a ring along the stamping seat. Horizontal retention grooves are opened on both sides of the inner wall of the longitudinal groove. A U-shaped frame is slidably clamped inside the horizontal retention groove. The side arms on both sides of the U-shaped frame are respectively slidably clamped in the corresponding horizontal retention grooves on the corresponding side. This device can use the tooth ends on the surface of the rotating ratchet disc to buckle on the surface of the iron sheet for clamping, effectively avoiding the offset of the iron sheet caused by machine vibration, ensuring the accuracy of stamping, and being able to control the ratchet disc to perform an inward gathering action, thereby automatically pushing the iron sheet on the surface of the stamping seat towards the middle of the stamping seat, eliminating the need for the user to specifically control the placement position of the iron sheet, making the operation simpler and faster, and ensuring the stamping quality and efficiency.

[0004] During the stamping process of the existing housing stamping device on a metal plate, it is unable to position the metal plate throughout the process, easily causing the raw material to shift during the stamping process, resulting in the stamped workpiece not meeting the standards, affecting the accuracy of the workpiece. Moreover, the stamped workpiece may get stuck in the mold, and when the stamping die is lifted, the stamped workpiece cannot automatically fall out of the stamping die, and workers are still required to take out the workpiece, reducing the work efficiency. Summary of the Invention

[0005] The present invention provides a stamping device for a compressor housing, aiming to solve the technical problems in the related art that during the stamping process of the existing housing stamping device on a metal plate, it is unable to position the metal plate throughout the process, easily causing the raw material to shift during the stamping process, resulting in the stamped workpiece not meeting the standards, affecting the accuracy of the workpiece, and the stamped workpiece may get stuck in the mold, and workers are still required to take out the workpiece, reducing the work efficiency.

[0006] A stamping device for a compressor casing of the present invention comprises: a fixed seat, a stamping head, a discharge platform and a stamping die, the stamping die is provided with a die cavity, the stamping head is fixed on the fixed seat, and the discharge platform is elastically connected to the fixed seat for vertical movement; a receiving groove for receiving a metal plate to be stamped is provided at the bottom of the die cavity, and a positioning module is also provided on the stamping die; a plurality of mounting cavities evenly spaced along the circumference of the die cavity are provided on the lower surface of the stamping die, each mounting cavity extends along the radial direction of the die cavity, and each mounting cavity is communicated with the receiving groove; the number of the positioning modules is the same as the mounting cavities, and each positioning module is arranged in each mounting cavity in a one-to-one correspondence; the positioning module comprises a transmission assembly and a clamping member, and the transmission assembly has a power input end and a power output end The output end is connected to the transmission member, the power input end is elastically slidably connected to the transmission member along the vertical direction, the power output end is elastically slidably connected to the power input end along the radial direction of the mold cavity, the power input end extends from the inside of the installation cavity toward the discharge table to the outside of the installation cavity, the clamping member is arranged at the power output end, the clamping member is used to push the metal plate to move toward the center of the mold cavity, and the clamping members are evenly spaced and distributed on the circumference of the mold cavity. In the process of the stamping die moving close to the stamping head, the upper surface of the discharge table can synchronously press the power input ends into the installation cavity to realize the input of driving force. At the same time, the power output ends can synchronously drive the clamping members to move in the radial direction of the mold cavity and toward the center of the mold cavity in the installation cavity, so as to push the metal plate to a position coaxial with the mold cavity.

[0007] Beneficial effect: During the process of the positioning frame moving inward, multiple positioning frames will abut against the outer wall of the metal plate until the guide block reaches the highest point of the inclined section. At this time, the bottom of the positioning frame will be flush with the bottom of the stamping die, and the bottom of the stamping die will abut against the discharge table, and the metal plate will enter the inner side of the receiving groove. Multiple clamps abut against the outer wall of the metal plate at the same time to complete the clamping and positioning of the metal plate. The stamping die will drive the discharge table to descend together, the punch head will pass through the through hole at the center of the discharge table upward, and then push the metal plate upward to squeeze the metal plate into the upper mold cavity. The metal plate will be formed on the inner wall of the mold cavity. During the stamping process, the clamps always abut against the outside of the metal plate to avoid the metal plate from shifting during the stamping process, thereby ensuring the quality of the stamping. After the stamping is completed, the stamping die begins to rise, and the discharge table will rise with the stamping die at the same time until the discharge table rises to the initial position. As the stamping die continues to rise, the bottom of the positioning frame is no longer restricted by the discharge table, and the tension spring begins to release. When the guide block reaches the highest point of the inclined section, the guide block enters the vertical section, the push spring is released, the push protrusion enters the limit groove, and the guide block moves downward along the vertical section. At this time, due to the elastic force of the clamping spring, the clamping part is still tightly clamped on the outside of the formed workpiece, so the tension spring is released, so that the support block moves downward, which will drive the formed workpiece to move downward, help the formed workpiece to leave the mold cavity, complete the forming of the metal plate and help the formed workpiece to leave the mold cavity.

[0008] Preferably, the power input end is a bearing block installed on the stamping die, the power output end is a positioning frame elastically and slidably connected to the bearing block along the radial direction of the die cavity, the transmission member includes a sliding block elastically and horizontally slidably connected in the installation cavity, a hollow connecting cylinder is fixedly provided at the bottom of the sliding block, the bearing block is slidably fitted outside the connecting cylinder, a tension spring is arranged inside the connecting cylinder, one end of the tension spring is connected to the connecting cylinder, the other end is connected to the bearing block, a guiding block is arranged on the bearing block, and a convex block is elastically and slidably connected along the axial direction thereof inside the guiding block. A guiding groove is further arranged on the installation cavity, and the guiding block is used for being in blocking fit with one side wall of the guiding groove to guide the bearing block.

[0009] The effect is that: the transmission member drives the bearing block to move on the positioning frame, so that during the process of the stamping die moving close to the stamping head, the upper surface of the blanking table can synchronously press each power input end into the installation cavity to realize the input of driving force, and at the same time, each power output end can synchronously drive each clamping member to move along the radial direction of the die cavity and towards the center of the die cavity in the installation cavity, so as to push the metal plate to the position coaxial with the die cavity.

[0010] Preferably, the guiding groove has an inclined section, a vertical section and a horizontal section which are communicated with each other. The inclined section inclines downward from the side close to the die cavity to the side far from the die cavity. A limiting groove is arranged in the vertical section, and a communicating groove is arranged in the horizontal section. The depth of the communicating groove gradually increases towards the vertical section and is communicated with the limiting groove. The convex block is used for being in blocking fit with one side wall of the limiting groove to guide the bearing block.

[0011] The effect is that: the guiding groove can play a guiding role in the movement of the bearing block.

[0012] Preferably, the bottom end of the communicating groove is flush with the bottom of the limiting groove, and the other end is flush with the bottom of the horizontal section, so that the convex block can transition from the limiting groove to the horizontal section.

[0013] The effect is that: it can enable the convex block to smoothly transition from the limiting groove to the horizontal section and complete the reset of the guiding block.

[0014] Preferably, a sliding rod is horizontally arranged on the positioning frame, the sliding rod is slidably fitted with the bearing block, and a clamping spring is sleeved outside the sliding rod. One end of the clamping spring is connected to the bearing block, and the other end is connected to the positioning frame. The clamping spring can expand and contract along the radial direction of the die cavity.

[0015] Preferably, the clamping member is a clamping wheel rotatably installed at the end of the positioning frame, and the rotation axis of the clamping wheel extends along the vertical direction.

[0016] Preferably, a fixing frame is horizontally and slidably mounted on the sliding block. A vertically arranged guide rod is fixedly mounted on the fixing frame, and a vertically arranged rack is also fixedly mounted on the fixing frame. A vertical plate is fixedly mounted on the positioning frame, and the vertical plate is slidably engaged with the guide rod up and down. A driving gear is rotatably mounted inside the vertical plate, and the driving gear is arranged corresponding to the rack up and down. A first transmission gear connected to the driving gear is also rotatably mounted on the vertical plate. A second transmission gear connected to the clamping member is rotatably mounted on the positioning frame, and the first transmission gear is in transmission cooperation with the second transmission gear.

[0017] The effect is that when the stamping is completed, during the downward movement of the bearing block, the positioning frame and the vertical plate will move downward, the driving gear will rotate, driving the clamping member to rotate, and the clamping member will apply a force to the formed workpiece to rotate around its own axis, which can help the workpiece better disengage from the mold cavity.

[0018] Preferably, the guiding groove is of a right triangle structure.

[0019] Preferably, a support column is fixedly mounted on the fixed seat, and a top plate is fixedly arranged at the upper end of the support column. The stamping die is slidably engaged with the top plate in the vertical direction.

[0020] Preferably, a vertically arranged sliding column is fixedly arranged on the fixed seat. The sliding column penetrates through the material feeding table and is slidably engaged with it, so that the material feeding table can slide up and down along the sliding column. A spring is sleeved outside the sliding column, with one end connected to the fixed seat and the other end connected to the material feeding table.

[0021] The effect is that after the material feeding table slides down along the sliding column to the bottom, the stamping and forming of the metal plate is completed, and the spring can help the material feeding table lift and reset.

[0022] By adopting the above technical solution, the beneficial effects of the present invention are as follows: during the process of the positioning frame moving inward, the positioning frame will abut against the outer wall of the metal plate until the guide block reaches the highest point of the inclined section. At this time, the bottom of the positioning frame will be flush with the bottom of the stamping die, and the bottom of the stamping die will abut against the discharge table, and the metal plate will enter the inner side of the receiving groove. Multiple clamps abut against the outer wall of the metal plate at the same time to complete the clamping and positioning of the metal plate. The stamping die will drive the discharge table to descend together, the punch head will pass through the through hole at the center of the discharge table upward, and then push the metal plate upward to squeeze the metal plate into the mold cavity above. The metal plate will be formed on the inner wall of the mold cavity. During the stamping process, the clamps will always abut against the outer side of the metal plate to avoid the metal plate from shifting during the stamping process, thereby ensuring the quality of the stamping. After the stamping is completed, the stamping die begins to rise, and the discharge table will simultaneously rise with the stamping die until the discharge table rises to the initial position. As the stamping die continues to rise, the bottom of the positioning frame is no longer restricted by the unloading table, and the tension spring begins to release. When the guide block reaches the highest point of the inclined section, the guide block enters the vertical section, the push spring is released, and the push protrusion enters the limit groove. The guide block moves downward along the vertical section. At this time, due to the elastic force of the clamping spring, the clamping piece is still tightly clamped on the outside of the formed workpiece, so the tension spring is released, so that the bearing block moves downward, which will drive the formed workpiece to move downward, helping the formed workpiece to leave the mold cavity, and finally the bearing block returns to the initial position. The forming of the metal plate is completed while helping the formed workpiece to leave the mold cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a cross-sectional view of the present invention.

[0025] Figure 3 It is a top view of the stamping die of the present invention.

[0026] Figure 4 It is a front view of the stamping die of the present invention.

[0027] Figure 5 It is an axonometric cross-sectional view of the stamping die of the present invention.

[0028] Figure 6 It is a schematic diagram of the guide groove of the present invention.

[0029] Figure 7 It is a schematic structural diagram of the bearing block of the present invention.

[0030] Figure 8 It is an exploded schematic diagram of the bearing block, the fixing frame and the positioning frame of the present invention.

[0031] Figure 9 It is a cross-sectional view of the bearing block of the present invention.

[0032] Figure 10 This is a schematic diagram of the metal plate after stamping according to the present invention.

[0033] Reference numerals:

[0034] 10, fixed seat; 11, support pillar; 12, top plate; 20, sliding column; 21, material placing table; 30, connecting rod; 31, stamping die; 32, die cavity; 33, receiving groove; 34, stamping head; 40, installation cavity; 41, sliding groove; 42, guiding groove; 421, inclined section; 422, vertical section; 423, horizontal section; 424, limiting groove; 425, communicating groove; 50, sliding block; 51, return spring; 52, connecting cylinder; 53, bearing block; 54, tension spring; 55, guiding block; 56, convex block; 57, pushing spring; 60, positioning frame; 61, sliding rod; 62, clamping spring; 63, clamping member; 70, fixing frame; 71, guide rod; 72, rack; 73, vertical plate; 74, driving gear; 75, first transmission gear; 76, second transmission gear. Detailed implementation manners

[0035] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0036] As Figures 1 to 10 shown, a specific embodiment of a stamping device for a compressor housing according to the present invention includes a fixing module, a material placing module, a stamping module, a positioning module, and a material transferring module.

[0037] As Figure 1 shown, the fixing module includes a fixed seat 10, support pillars 11, and a top plate 12. Both the fixed seat 10 and the top plate 12 are square structures. The support pillars 11 are vertically and fixedly installed on the upper surface of the fixed seat 10, and there are four support pillars 11, which are respectively arranged at the four corners of the fixed seat 10. The top plate 12 is fixedly installed at the upper ends of the support pillars 11.

[0038] The material placing module includes four sliding columns 20 fixedly installed on the fixed seat 10. The sliding columns 20 are all vertically arranged, and the four sliding columns 20 are respectively close to the four corners of the fixed seat 10. The material placing table 21 is used to place the metal plate to be processed, and a through hole penetrating up and down is provided at the center position of the material placing table 21. The four sliding columns 20 all penetrate the material placing table 21, and the sliding columns 20 are slidably matched with the material placing table 21, so that the material placing table 21 can slide up and down on the sliding columns 20.

[0039] A spring is sleeved outside the sliding column 20. One end of the spring is connected to the fixed seat 10, and the other end is connected to the bottom of the material placing table 21. Thus, when the material placing table 21 slides downward along the sliding column 20, the spring will be compressed, and when the spring is released, it can drive the material placing table 21 to rise and reset.

[0040] In this embodiment, the metal plate has a circular structure. The metal plate is placed on the upper surface of the material placing table 21, and the positioning module can position it, and the stamping module completes the stamping and forming of the metal plate.

[0041] Such as Figure 1 、 Figure 2 And Figure 3 As shown, the stamping module includes a stamping head 34 fixedly installed on the upper surface of the fixed seat 10. The stamping head 34 is vertically arranged and corresponds to the through hole at the center position of the material placing table 21. The upper end of the stamping head 34 has a shape matching the formed workpiece.

[0042] A connecting rod 30 is vertically and slidably installed on the top plate 12. The lower end of the connecting rod 30 is fixedly installed with a stamping die 31. A cylinder (not shown in the figure) is arranged on the connecting rod 30, and the connecting rod 30 is fixedly connected to the telescopic part of the cylinder. Thus, the cylinder can drive the connecting rod 30 and the stamping die 31 to lift.

[0043] A circular receiving groove 33 is formed at the bottom of the stamping die 31. The diameter of the receiving groove 33 is larger than the diameter of the metal plate. Thus, when the stamping die 31 descends to the upper surface of the material placing table 21, the metal plate is just located inside the receiving groove 33. The positioning module is arranged on the stamping die 31, and the stamping die 31 can position the metal plate.

[0044] A cavity 32 that is recessed upward is arranged at the center position of the receiving groove 33. The shape and position of the cavity 32 correspond to those of the lower stamping head 34.

[0045] The stamping die 31 will first descend to the upper surface of the material placing table 21. At this time, the bottom of the stamping die 31 abuts against the upper surface of the material placing table 21, and the metal plate will be located inside the receiving groove 33. Then the stamping die 31 will continue to descend for stamping. The stamping die 31 drives the material placing table 21 to descend together, and the material placing table 21 will slide downward along the sliding column 20, and the spring will be compressed. The stamping head 34 passes upward through the through hole at the center position of the material placing table 21, and then pushes the metal plate upward, extruding the metal plate into the upper cavity 32. The metal plate will be formed on the inner wall of the cavity 32, and the metal plate is stamped into the shape of a compressor housing, completing the stamping and forming of the metal plate.

[0046] Such as Figures 3 to 9 As shown, a plurality of installation cavities 40 are formed on the lower surface of the stamping die 31 and are evenly spaced circumferentially along the cavity 32. Each installation cavity 40 extends radially along the cavity 32, and each installation cavity 40 communicates with the receiving groove 33 (such asFigure 3 and Figure 5 ). In this embodiment, the number of the installation cavities 40 is 4. In other embodiments, the number can also be 6, 8 or even more.

[0047] The number of the positioning modules is the same as that of the installation cavities 40, and each positioning module is correspondingly arranged in each installation cavity 40 one by one. The positioning module includes a transmission assembly and a clamping member 63. The transmission assembly has a power input end, a power output end and a transmission member. The power input end is elastically slidably connected to the transmission member in the vertical direction. The power input end extends from inside the installation cavity 40 towards the material placing table 21 to the outside of the installation cavity 40. The power output end is elastically slidably connected to the power input end in the radial direction of the die cavity 32. The clamping member 63 is arranged at the power output end and is used to push the metal plate towards the center of the die cavity 32 to move. The clamping members 63 of each positioning module are evenly spaced in the circumferential direction of the die cavity 32. During the process of the stamping die 31 moving towards the material placing table 21, the upper surface of the material placing table 21 can simultaneously push the power input ends of each positioning module into the installation cavity 40 to realize the input of the driving force. At the same time, each power output end can simultaneously drive each clamping member 63 to move in the installation cavity 40 in the radial direction of the die cavity 32 and towards the center of the die cavity 32, so as to push the metal plate to the coaxial position with the die cavity 32 and clamp the metal plate.

[0048] Specifically, the power input end is a bearing block 53 installed on the stamping die 31, and the power output end is a positioning frame 60 elastically slidably connected to the bearing block 53 in the radial direction of the die cavity 32. The transmission member includes a sliding block 50, a return spring 51, a connecting cylinder 52, a tension spring 54, a guiding block 55, a convex block 56 and a guiding groove 42.

[0049] In each installation cavity 40, two opposite faces in the tangential direction of the die cavity 32 located on this installation cavity 40 are respectively provided with a sliding groove 41 and a guiding groove 42. The sliding groove 41 is located above the guiding groove 42, and the sliding groove 41 is horizontally arranged.

[0050] As Figure 5 shown, in this embodiment, the guiding groove 42 is a right triangle structure. The guiding grooves 42 all have an inclined section 421, a vertical section 422 and a horizontal section 423, and the inclined section 421, the vertical section 422 and the horizontal section 423 are all communicated with each other. Among them, the inclined section 421 gradually slopes downward from the side close to the die cavity 32 to the side far from the die cavity 32. The upper end of the vertical section 422 is connected to the higher end of the inclined section 421. One end of the horizontal section 423 is connected to the lower end of the inclined section 421, and the other end of the horizontal section 423 is connected to the lower end of the vertical section 422.

[0051] A limiting groove 424 is formed on the tangential surface of the vertical section 422 along the cavity 32, and a communicating groove 425 is formed on the tangential surface of the horizontal section 423 along the cavity 32. The communicating groove 425 is inclined, that is, the depth of the communicating groove 425 gradually increases towards the vertical section 422, and the end with the maximum depth of the communicating groove 425 communicates with the lower end of the limiting groove 424. One end of the bottom of the communicating groove 425 is flush with the bottom of the limiting groove 424, and the other end is flush with the bottom of the horizontal section 423, so that the limiting groove 424 can smoothly transition into the horizontal section 423.

[0052] A sliding block 50 is slidably installed in the chute 41. The two sides of the sliding block 50 are respectively slidably engaged in the opposite sides of the chute 41, so that the sliding block 50 can slide horizontally along the chute 41. A return spring 51 is arranged on the sliding block 50. One end of the return spring 51 is connected to the sliding block 50, and the other end of the return spring 51 is connected to the inner wall of the installation cavity 40. The return spring 51 can help the sliding block 50 to reset after moving.

[0053] A hollow connecting cylinder 52 is fixedly installed at the bottom of the sliding block 50. A bearing block 53 is slidably installed on the outer side of the connecting cylinder 52 along its axial direction. A cylindrical groove for accommodating the connecting cylinder 52 is formed on the inner side of the bearing block 53. When the bearing block 53 slides along the axial direction of the connecting cylinder 52, the connecting cylinder 52 can enter the inner side of the bearing block 53. A tension spring 54 is arranged inside the connecting cylinder 52. One end of the tension spring 54 is connected to the bearing block 53, and the other end of the tension spring 54 is connected to the connecting cylinder 52.

[0054] Guide blocks 55 are fixedly installed on the sides of the bearing block 53 opposite to the two guide grooves 42. The guide blocks 55 are of a cylindrical structure. The two guide blocks 55 are respectively located in the corresponding guide grooves 42. In the initial state, the guide blocks 55 are located at the lower end of the inclined section 421.

[0055] Convex blocks 56 are slidably installed on the inner sides of the guide blocks 55 along their axial directions. A push spring 57 is installed between the convex blocks 56 and the guide blocks 55. One end of the push spring 57 is connected to the convex block 56, and the other end of the push spring 57 is connected to the guide block 55. When the guide block 55 is located in the inclined section 421 of the guide groove 42, the convex block 56 is always received inside the guide block 55. At this time, the convex block 56 is flush with the end of the guide block 55.

[0056] The lower end of the bearing block 53 extends below the stamping die 31. A positioning frame 60 is horizontally slidably installed at a position near the bottom of the bearing block 53. In the initial state, the positioning frame 60 is located below the stamping die 31. The lower end surface of the positioning frame 60 is flush with the lower end surface of the bearing block 53. A sliding rod 61 is horizontally arranged inside the positioning frame 60. The sliding rod 61 is slidably matched with the bearing block 53, and a clamping spring 62 is sleeved outside the sliding rod 61. One end of the clamping spring 62 is connected to the bearing block 53, and the other end of the clamping spring 62 is connected to the positioning frame 60.

[0057] As Figure 7 , a clamping member 63 is installed at one end of the positioning frame 60 close to the mold cavity 32. In this embodiment, the clamping member 63 is a clamping wheel rotatably installed at the end of the positioning frame 60. The axis of the clamping wheel is vertically arranged, and the material of the clamping wheel can be rubber or metal. In other deformed embodiments, the structure of the clamping member 63 is not limited to this. It can be fixedly installed on the positioning frame 60, and the shape can be other shapes such as arc-shaped, circular, square, etc.

[0058] After the metal plate is placed on the feeding table 21, the stamping die 31 starts to descend. When the stamping die 31 approaches the feeding table 21, the bottom of the positioning frame 60 will first abut against the upper surface of the feeding table 21. As the stamping die 31 continues to descend, at this time, due to the large spring force outside the sliding column 20, the feeding table 21 will not be pressed down. Therefore, the positioning frame 60 is subjected to an upward pushing force, which will force the positioning frame 60 and the bearing block 53 to move upward. When the bearing block 53 rises, the guiding block 55 will move along the inclined section 421 of the guiding groove 42 from the lowest point to the highest point. Thus, while the bearing block 53 moves upward, it will also move toward the center of the mold cavity 32. As the bearing block 53 moves, the connecting cylinder 52 will gradually enter the inside of the bearing block 53, and the tension spring 54 is compressed. The bearing block 53 simultaneously drives the sliding block 50 and the positioning frame 60 to move toward the center of the mold cavity 32, and the return spring 51 on the sliding block 50 is compressed. When the positioning frame 60 moves inward, a plurality of positioning frames 60 in the circumferential direction start to abut against the outer wall of the metal plate. Then the positioning frame 60 will slide horizontally on the bearing block 53, and the clamping spring 62 is gradually compressed until the guiding block 55 reaches the highest point of the inclined section 421. At this time, the bottom of the positioning frame 60 will be flush with the bottom of the stamping die 31. The bottom of the stamping die 31 abuts against the feeding table 21, and the metal plate will enter the inside of the receiving groove 33. At this time, the positioning frame 60 and the clamping spring 62 will no longer move, and a plurality of clamping members 63 simultaneously abut against the outer wall of the metal plate to complete the clamping and positioning of the metal plate.

[0059] Then the stamping die 31 will continue to descend for stamping, and the stamping die 31 will drive the discharge platform 21 to descend together. The discharge platform 21 will slide downward along the slide column 20, and the spring will be compressed. The punch head 34 will pass upward through the through hole at the center of the discharge platform 21, and then push the metal plate upward to squeeze the metal plate into the upper mold cavity 32. The metal plate will be formed on the inner wall of the mold cavity 32, and the metal plate will be stamped into the shape of the compressor shell, completing the stamping of the metal plate. In the process of stamping the metal plate, the multiple clamping members 63 arranged circumferentially always abut against the outer side of the metal plate to prevent the metal plate from shifting during the stamping process, thereby ensuring the quality of the stamping.

[0060] After the stamping is completed, the stamping die 31 begins to rise, and the discharge platform 21 will rise with the stamping die 31 at the same time, until the discharge platform 21 is raised to the initial position. As the stamping die 31 continues to rise, the bottom of the positioning frame 60 is no longer restricted by the discharge platform 21, and the tension spring 54 begins to release. When the guide block 55 reaches the highest point of the inclined section 421, the guide block 55 also enters the vertical section 422, the push spring 57 is released, and the push protrusion 56 enters the limit groove 424, so the guide block 55 can only move downward along the vertical section 422. At this time, due to the elastic force of the clamping spring 62, the clamping member 63 is still tightly clamped on the outside of the formed workpiece, so the tension spring 54 is released, so that the bearing block 53 moves downward, which will drive the formed workpiece to move downward, helping the formed workpiece to escape from the mold cavity 32, until the guide block 55 drops to the lower end of the vertical section 422. At this time, the guide block 55 has reached the end of the horizontal section 423, and the elastic forces of the return spring 51 and the clamping spring 62 are released at the same time, so that the guide block 55 moves along the horizontal section 423 toward the side away from the die cavity 32, and the protrusion 56 just enters the horizontal section 423 along the connecting groove 425, and the protrusion 56 is squeezed into the guide block 55 again. After the return spring 51 is released, the bearing block 53 finally returns to the initial position, completing the forming of the metal plate and helping the formed workpiece to separate from the die cavity 32.

[0061] In order to better separate the formed workpiece from the mold cavity 32, the present invention also provides another embodiment, which is achieved by a material transfer module.

[0062] It is particularly noted that, in this embodiment, the clamping member 63 is a clamping wheel rotatably mounted on the end of the positioning frame 60 .

[0063] like Figure 7 and Figure 8 As shown, the material transfer module includes a fixed frame 70 horizontally slidably mounted on the sliding block 50, a vertically arranged guide rod 71 is fixedly mounted on the fixed frame 70, and a rack 72 is also fixedly mounted on the fixed frame 70, and the rack 72 is also vertically arranged.

[0064] A vertical plate 73 is fixedly installed on the positioning frame 60, and the vertical plate 73 is in vertical sliding fit with the guide rod 71.

[0065] A driving gear 74 is rotatably installed inside the vertical plate 73, and the driving gear 74 and the rack 72 are arranged corresponding to each other vertically. A first transmission gear 75 connected to the driving gear 74 is rotatably installed on the outer side surface of the vertical plate 73. A second transmission gear 76 fixedly connected to the clamping wheel is rotatably installed on the positioning frame 60. In this embodiment, both the first transmission gear 75 and the second transmission gear 76 are bevel gears and are in transmission cooperation with each other.

[0066] When stamping, the bearing block 53 drives the positioning frame 60 to rise. At this time, the vertical plate 73 will slide upward along the guide rod 71. When the positioning frame 60 slides horizontally on the bearing block 53, the fixing frame 70 will simultaneously slide horizontally on the sliding block 50. During the upward movement of the vertical plate 73, when the driving gear 74 gradually approaches the upper side, the driving gear 74 will engage with the rack 72, thereby driving the clamping member 63 to rotate through the first transmission gear 75 and the second transmission gear 76. At this time, it will not affect the metal plate during the stamping process.

[0067] After the stamping is completed, during the downward movement of the bearing block 53, the positioning frame 60 and the vertical plate 73 will move downward, and the driving gear 74 will rotate, driving the clamping member 63 to rotate. The clamping member 63 will give a formed workpiece a force to rotate around its own axis. Generally speaking, when the clamping member 63 pulls the workpiece downward, it will simultaneously give the workpiece a rotational force, which can help the workpiece better disengage from the mold cavity 32.

[0068] The working principle of the present invention is as follows: After placing the metal plate on the loading table 21, the stamping die 31 starts to descend. When the stamping die 31 approaches the loading table 21, the bottom of the positioning frame 60 will first abut against the upper surface of the loading table 21. As the stamping die 31 continues to descend, at this time, due to the relatively large elastic force of the spring outside the sliding column 20, the loading table 21 will not be pressed down. Therefore, the positioning frame 60 receives an upward pushing force, which will force the positioning frame 60 and the bearing block 53 to move upward. When the bearing block 53 rises, the guiding block 55 will move along the inclined section 421 of the guiding groove 42 from the lowest point to the highest point. As a result, while the bearing block 53 moves upward, it will also move toward the center of the mold cavity 32. As the bearing block 53 moves, the connecting cylinder 52 will gradually enter the inside of the bearing block 53, and the tension spring 54 will be compressed. The bearing block 53 will simultaneously drive the sliding block 50 and the positioning frame 60 to move toward the center of the mold cavity 32, and the return spring 51 on the sliding block 50 will be compressed. When the positioning frame 60 moves inward, multiple circumferential positioning frames 60 will start to abut against the outer wall of the metal plate, and then the positioning frame 60 will slide horizontally on the bearing block 53, and the clamping spring 62 will be gradually compressed. Until the guiding block 55 reaches the highest point of the inclined section 421, at this time, the bottom of the positioning frame 60 will be flush with the bottom of the stamping die 31, the bottom of the stamping die 31 will abut against the loading table 21, and the metal plate will enter the inside of the receiving groove 33. At this time, the positioning frame 60 and the clamping spring 62 will no longer move, and multiple clamping members 63 will simultaneously abut against the outer wall of the metal plate to complete the clamping and positioning of the metal plate.

[0069] Then the stamping die 31 will continue to descend for stamping. The stamping die 31 will drive the loading table 21 to descend together, and the loading table 21 will slide downward along the sliding column 20, and the spring will be compressed. The stamping head 34 will pass upward through the through hole at the center position of the loading table 21, and then push the metal plate upward to extrude the metal plate into the upper mold cavity 32. The metal plate will be formed on the inner wall of the mold cavity 32, and the metal plate will be stamped into the shape of a compressor housing to complete the stamping and forming of the metal plate. During the stamping process of the metal plate, multiple circumferentially arranged clamping members 63 always abut against the outer side of the metal plate to prevent the metal plate from shifting during the stamping process and ensure the quality of stamping.

[0070] After the stamping is completed, the stamping die 31 begins to rise, and the discharge platform 21 will rise with the stamping die 31 at the same time, until the discharge platform 21 is raised to the initial position. As the stamping die 31 continues to rise, the bottom of the positioning frame 60 is no longer restricted by the discharge platform 21, and the tension spring 54 begins to release. When the guide block 55 reaches the highest point of the inclined section 421, the guide block 55 also enters the vertical section 422, the push spring 57 is released, and the push protrusion 56 enters the limit groove 424, so the guide block 55 can only move downward along the vertical section 422. At this time, due to the elastic force of the clamping spring 62, the clamping member 63 is still tightly clamped on the outside of the formed workpiece, so the tension spring 54 is released, so that the bearing block 53 moves downward, which will drive the formed workpiece to move downward, helping the formed workpiece to escape from the mold cavity 32, until the guide block 55 drops to the lower end of the vertical section 422. At this time, the guide block 55 has reached the end of the horizontal section 423, and the elastic forces of the return spring 51 and the clamping spring 62 are released at the same time, so that the guide block 55 moves along the horizontal section 423 toward the side away from the die cavity 32, and the protrusion 56 just enters the horizontal section 423 along the connecting groove 425, and the protrusion 56 is squeezed into the guide block 55 again. After the return spring 51 is released, the bearing block 53 finally returns to the initial position, completing the forming of the metal plate and helping the formed workpiece to separate from the die cavity 32.

[0071] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A stamping device for a compressor housing, comprising: A fixed seat, a stamping head, a material feeding table and a stamping die. The stamping die has a die cavity. The stamping head is fixed on the fixed seat, and the material feeding table is elastically and vertically movably connected to the fixed seat. It is characterized in that a receiving groove for receiving the metal plate to be stamped is provided at the bottom of the die cavity, and a positioning module is also provided on the stamping die; A plurality of mounting cavities are formed on the lower surface of the stamping die and are evenly spaced along the circumferential direction of the die cavity. Each mounting cavity extends radially along the die cavity, and each mounting cavity communicates with the receiving groove. The number of positioning modules is the same as that of the mounting cavities, and each positioning module is correspondingly arranged in each mounting cavity; The positioning module includes a transmission component and a clamping member. The transmission component has a power input end, a power output end and a transmission member. The power input end is elastically and slidably connected to the transmission member in the vertical direction, and the power output end is elastically and slidably connected to the power input end in the radial direction of the die cavity. The power input end extends from the mounting cavity towards the material feeding table to the outside of the mounting cavity. The clamping member is arranged at the power output end. The clamping member is used to push the metal plate towards the center of the die cavity to move. Each clamping member is evenly spaced along the circumference of the die cavity. During the process of the stamping die moving closer to the stamping head, the upper surface of the material feeding table can synchronously push each power input end into the mounting cavity to realize the input of the driving force. At the same time, each power output end can synchronously drive each clamping member to move radially along the die cavity and towards the center of the die cavity in the mounting cavity, so as to push the metal plate to the coaxial position with the die cavity; The power input end is a bearing block installed on the stamping die, and the power output end is a positioning frame elastically and slidably connected to the bearing block in the radial direction of the die cavity. The transmission member includes a sliding block elastically and horizontally slidably connected in the mounting cavity. A hollow connecting cylinder is fixed at the bottom of the sliding block. The bearing block is slidably fitted outside the connecting cylinder. A tension spring is arranged inside the connecting cylinder. One end of the tension spring is connected to the connecting cylinder, and the other end is connected to the bearing block. A guiding block is arranged on the bearing block. A convex block is elastically and slidably connected along the axial direction inside the guiding block. A guiding groove is also arranged on the mounting cavity. The guiding block is used for blocking and cooperating with one side wall of the guiding groove to guide the bearing block; The guiding groove has an inclined section, a vertical section and a horizontal section that are communicated with each other. The inclined section slopes downward from the side close to the die cavity to the side away from the die cavity. A limiting groove is arranged in the vertical section, and a communicating groove is arranged in the horizontal section. The depth of the communicating groove gradually increases towards the vertical section and is communicated with the limiting groove. The convex block is used for blocking and cooperating with one side wall of the limiting groove to guide the bearing block; A fixed frame is horizontally slidably installed on the sliding block. A vertically arranged guide rod is fixedly installed on the fixed frame, and a vertically arranged rack is also fixedly installed on the fixed frame. A vertical plate is fixedly installed on the positioning frame, and the vertical plate is slidably matched with the guide rod up and down. A driving gear is rotatably installed inside the vertical plate, and the driving gear is arranged corresponding to the rack up and down. A first transmission gear connected to the driving gear is also rotatably installed on the vertical plate. A second transmission gear connected to the clamping member is rotatably installed on the positioning frame. The first transmission gear and the second transmission gear are in transmission cooperation.

2. The stamping device for a compressor housing according to claim 1, wherein, One end of the bottom of the communicating groove is flush with the bottom of the limiting groove, and the other end is flush with the bottom of the horizontal section, so that the convex block transitions from the limiting groove to the horizontal section.

3. The stamping device for a compressor housing according to claim 1, wherein, A sliding rod is horizontally arranged on the positioning frame. The sliding rod is in sliding fit with the bearing block, and a clamping spring is sleeved outside the sliding rod. One end of the clamping spring is connected to the bearing block, and the other end is connected to the positioning frame. The clamping spring can expand and contract along the radial direction of the mold cavity.

4. A stamping device for a compressor housing according to claim 2 or 3, characterized in that, The clamping member is a clamping wheel rotatably installed at the end of the positioning frame, and the rotation axis of the clamping wheel extends in the vertical direction.

5. A stamping device for a compressor housing according to claim 1, characterized in that, The guiding groove is of a right triangle structure.

6. A stamping device for a compressor housing according to claim 4, characterized in that A support column is fixedly installed on the fixed seat, and a top plate is fixedly arranged at the upper end of the support column. The stamping die is in sliding fit with the top plate in the vertical direction.

7. A stamping device for a compressor housing according to claim 4, characterized in that, A vertically arranged sliding column is fixedly arranged on the fixed seat. The sliding column penetrates through the blank feeding table and is in sliding fit with it, so that the blank feeding table can slide up and down along the sliding column. A spring is sleeved outside the sliding column. One end of the spring is connected to the fixed seat, and the other end is connected to the blank feeding table.

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