A gear pump dowel pin stamping device and method of use

Abstract

This invention relates to the field of stamping technology, specifically disclosing a gear pump positioning pin stamping device, including a support frame, a cylinder assembly at the top of the support frame, a lower die at the bottom of the support frame, and an upper die at the top of the support frame for cooperating with the lower die to complete the stamping. The cylinder assembly is used to drive the upper die to rise and fall. The stamping device is characterized by further including a falling assembly, a through groove, a clamping assembly, and a sweeping assembly. A sliding plate slides at the bottom of the upper die. The clamping assembly includes a circular tube disposed inside the upper die corresponding to the position outside the through groove. A rubber ring is disposed on the inner side of the circular tube, and a push plate is disposed inside the circular tube. The pressure of the medium changes when the push plate moves up and down. Through the cooperation of the above structures, the parts to be stamped can be automatically inserted into the die hole without manual insertion, improving stamping efficiency. At the same time, the operator's hands are not placed between the upper and lower dies when adding parts, reducing the possibility of operator hand injury.

Description

Technical Field

[0001] This invention relates to the field of stamping technology, and in particular to a stamping device for a gear pump positioning pin and its method of use. Background Technology

[0002] The pump body and front and rear pump covers of the gear pump need to be precisely positioned by locating pins to avoid misalignment during assembly. In the process of processing the locating pins of the gear pump, stamping is a high-speed repetitive process that is suitable for mass production of locating pins. Through one-time forming by mold, a large number of parts of the same specifications can be produced in a short time, which is far more efficient than traditional turning or milling. When stamping the locating pins, the cylindrical parts need to be stamped into flat-head locating pins with a larger end diameter.

[0003] To improve the efficiency of stamping parts, multiple stamping stations can be designed to increase the efficiency of stamping production. For example, the "Multi-station Stamping Device" with publication number "CN205183450U" completes the stamping of a workpiece in one go by setting several stamping heads at the lower end of the stamping plate, which greatly improves the stamping effect and the stamping quantity, and is conducive to improving production efficiency.

[0004] However, in actual use, the operator needs to manually place the part to be processed directly into the die hole below, and then remove the operator's hand from the stamping area before stamping. However, in the actual stamping process, in order to improve the processing accuracy and avoid deformation of the bottom of the cylindrical part during stamping, the die hole needs to be matched with the height of the part to be stamped. This makes it difficult for the part to be inserted into the die hole, thus affecting the processing efficiency. Moreover, if the stamping step is accidentally triggered by manually placing the part, it may cause injury to the operator's hand, thus affecting the safety of the operation. Summary of the Invention

[0005] The purpose of this invention is to provide a gear pump positioning pin stamping device and its usage method, which can automatically insert the parts to be stamped into the die hole without manual insertion, thereby improving stamping efficiency. At the same time, the operator's hands do not need to be placed between the upper and lower dies when adding parts, reducing the possibility of operator hand injury, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a gear pump positioning pin stamping device, comprising a support frame, a cylinder assembly disposed at the top of the support frame, a lower die disposed at the bottom of the support frame, and an upper die disposed at the top of the support frame for cooperating with the lower die to complete the stamping; the cylinder assembly is used to drive the upper die to rise and fall; characterized in that the stamping device further comprises:

[0007] The dropping assembly, located at the rear end of the upper die, is used to control the dropping of the stamped parts;

[0008] Through the slot, which is located inside the upper die, the stamped part passes through its interior after falling, and a sliding plate slides at the bottom of the upper die;

[0009] The clamping assembly is located inside the upper mold and is used to clamp the part. When the upper mold moves downward and inserts the bottom of the part into the mold hole opened in the lower mold, it plays a role in limiting the part. The clamping assembly includes a round tube located inside the upper mold corresponding to the position outside the groove. A rubber ring is arranged on the inner side of the round tube. The inside of the round tube is filled with a medium. A push plate is arranged inside the round tube. The pressure of the medium changes when the push plate moves up and down.

[0010] The sweeping component is configured outside the upper mold. The sweeping component includes a swing frame configured outside the upper mold. When the upper mold moves downward, the swing frame rotates. A blocking rod is configured below the groove corresponding to the rear end of the swing frame.

[0011] Preferably, the clamping assembly further includes:

[0012] The inner carriage is slidably connected to the upper mold, and the top of the carriage is equipped with a first electric telescopic rod for driving the carriage to move up and down;

[0013] A small rod is fixedly connected to the top of the push plate, and the top of the rod extends into the carriage and is rotatably connected to a ball bearing.

[0014] Preferably, O-rings are installed on both the inner and outer sides of the push plate, and the O-rings on both the inner and outer sides are in contact with the inner side of the round tube.

[0015] Preferably, the scanning component further includes:

[0016] A rotating shaft rotates on both sides of the upper mold, and a first gear is fixedly connected to the end of the rotating shaft;

[0017] The first rack has its bottom fixed to the lower mold, and teeth are arranged on the first rack, which mesh with the first gear.

[0018] Preferably, the scanning component further includes:

[0019] The motion frame is fixedly connected to the outer wall of the rotating shaft. The bottom of the motion frame slides with the top of the swing frame. A U-shaped spring is fixedly connected between the motion frame and the swing frame.

[0020] Preferably, a friction block is fixedly connected to the outer wall of the rotating shaft inside the upper mold.

[0021] Preferably, the stamping device further includes:

[0022] A rotating assembly, disposed inside the upper mold, is used to rotate the circular tube. The rotating assembly includes a toothed ring fixedly connected to the outer wall of the circular tube. A second rack is slidably connected to the front end of the toothed ring inside the upper mold. The teeth of the second rack mesh with the toothed ring. A concave frame is fixedly connected to the front end of the second rack. A vertical rod is fixedly connected to the front end of the support frame. The vertical rod passes through the inner side of the concave frame. Inclined blocks are fixedly connected to both sides of the vertical rod in an alternating manner. The top and bottom ends of the inclined blocks are both inclined. A circular shaft is rotatably connected to the inner side of the concave frame.

[0023] Preferably, the upper mold is characterized by: a sleeve fixedly connected to the front side of the upper mold, a T-shaped frame fixedly connected inside the sleeve, a circular plate movable inside the mold hole of the lower mold, a bent frame fixedly connected to the bottom of the circular plate, and a blocking plate fixedly connected to the bottom of the T-shaped frame extending into the bottom of the bent frame.

[0024] Preferably, the falling component includes a square groove inside the upper mold corresponding to the rear end of the through groove, an insertion cover is fixedly connected to the rear side of the upper mold corresponding to the square groove, an installation cover is snapped onto the rear end of the insertion cover, a second electric telescopic rod is fixedly connected to the rear end of the installation cover, an extrusion plate is fixedly connected to the output shaft of the second electric telescopic rod through the installation cover, and an elastic sheet is fixedly connected to the bottom inner side of the square groove near the through groove.

[0025] A method of using a gear pump positioning pin stamping device includes the following steps:

[0026] S1. Feeding: Place the part into the dropping assembly. The dropping assembly places the part into the passage groove. The clamping assembly clamps the part and moves the upper mold downward to place the part into the mold hole.

[0027] S2. Stamping: The moving plate blocks the passage through the slot, and the upper die moves downward to stamp the part.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. Through the cooperation of the dropping component and the clamping component, the parts to be stamped can be automatically inserted into the die hole without manual insertion, thus improving stamping efficiency. At the same time, the operator's hands do not need to be placed between the upper and lower dies when adding parts, reducing the possibility of operator hand injury.

[0030] 2. By utilizing the sweeping component, when the upper mold moves close to the lower mold, it can push out the obstruction between the upper and lower molds. If the operator's hand is accidentally placed in this position, the swing frame and the blocking bar will swing and push the operator's hand out of the area, further reducing the possibility of hand injury and thus further improving the safety of the device. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a structural view of the support frame and cylinder assembly of the present invention;

[0033] Figure 2 This is an overall structural view of the present invention;

[0034] Figure 3 This is a schematic diagram of the half-section structure of the present invention;

[0035] Figure 4 For the present invention Figure 3 Enlarged view of point A;

[0036] Figure 5 This is a partial structural schematic diagram of the scanning component of the present invention;

[0037] Figure 6 This is a partial cross-sectional view of the swing frame of the present invention;

[0038] Figure 7 This is a bottom view of the upper mold structure of the present invention;

[0039] Figure 8 This is a partial cross-sectional view of the clamping assembly of the present invention;

[0040] Figure 9 This is a partial side view of the extrusion plate of the present invention;

[0041] Figure 10 This is a partial side sectional view of the insertion cover of the present invention;

[0042] Figure 11 This is a schematic diagram of the cross-sectional structure of the upper mold of the present invention;

[0043] Figure 12 This is a half-sectional structural diagram of the sleeve of the present invention.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. Support frame; 2. Cylinder assembly; 3. Lower mold; 4. Upper mold; 5. Drop assembly; 51. Square channel; 52. Insertion cover; 53. Mounting cover; 54. Second electric telescopic rod; 55. Extrusion plate; 56. Elastic sheet; 6. Clamping assembly; 61. Round tube; 62. Rubber ring belt; 63. Push plate; 64. Slide carriage; 65. First electric telescopic rod; 66. Small rod; 67. Ball bearing; 68. O-ring seal; 7. Sweeping assembly; 1. Swing frame; 72. Blocking rod; 73. Rotating shaft; 74. Moving frame; 75. First gear; 76. First rack; 77. U-shaped spring; 78. Friction block; 8. Rotating assembly; 81. Gear ring; 82. Second rack; 83. Concave frame; 84. Vertical rod; 85. Inclined block; 86. Round shaft; 9. Blocking plate; 10. Through slot; 11. Moving plate; 12. Sleeve frame; 13. T-shaped frame; 14. Round plate; 15. Bending frame. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Example 1: Please refer to Figures 1 to 10This invention provides a technical solution: a gear pump positioning pin stamping device, including a support frame 1, a cylinder assembly 2 fixedly mounted on the top of the support frame 1, the cylinder assembly 2 including a cylinder and a configured air pressure passage (this technology is mature prior art, so it will not be described in detail), a lower die 3 mounted on the bottom of the support frame 1, and an upper die 4 configured on the top of the support frame 1 for cooperating with the lower die 3 to complete the stamping, the top of the upper die 4 being mounted to the output shaft of the cylinder assembly 2, the cylinder assembly 2 being used to drive the upper die 4 to rise and fall, the stamping device also includes a falling assembly 5 configured at the rear end of the upper die 4, the falling assembly 5 being used to control the falling of the part to be stamped, the stamping device also includes a through groove 10 opened inside the upper die 4, the stamped part passing through its interior after falling, a sliding plate 11 slidingly mounted on the bottom of the upper die 4, a third electric telescopic rod fixedly connected to the upper die 4, the output shaft of the third electric telescopic rod being fixedly connected to the sliding plate 11. The stamping device also includes a clamping assembly 6, which is disposed inside the upper die 4 and is used to clamp the part. When the upper die 4 moves downward and inserts the bottom of the part into the die hole opened in the lower die 3, it plays a role in limiting the part. The clamping assembly 6 includes a circular tube 61 that rotates inside the upper die 4 and corresponds to the position outside the through groove 10. A rubber ring belt 62 is disposed on the inner side of the circular tube 61. The inside of the circular tube 61 is filled with a medium. A push plate 63 is disposed inside the circular tube 61. The pressure of the medium changes when the push plate 63 moves up and down. The stamping device also includes a sweeping assembly 7, which is disposed outside the upper die 4. The sweeping assembly 7 includes a swing frame 71 disposed outside the upper die 4. When the upper die 4 moves downward, the swing frame 71 rotates. The rear end of the swing frame 71 corresponds to the lower fixed stop bar 72 of the through groove 10. The position of the through groove 10 corresponds to the die hole opened in the lower die 3. The bottom position of the through groove 10 is adapted to the part.

[0048] By adopting the above technical solution, when performing stamping, the cylindrical part is first cut into a suitable length and then heated for annealing and softening treatment. The annealed part is then stamped into shape by this device.

[0049] During stamping, the cylindrical part to be processed is first placed inside the insertion cover 52 and square groove 51 inside the falling assembly 5. Under the action of the falling assembly 5, the part falls into the passage groove 10 in sequence. Then, by controlling the movement of the push plate 63 to change the pressure of the medium inside the round tube 61, the rubber ring 62 can expand to squeeze and clamp the part. The design of the blocking rod 72 can block the bottom of the part, preventing the part from being discharged from the bottom of the passage groove 10 without being clamped and limited by the clamping assembly 6.

[0050] After the part is clamped, the output shaft of the cylinder assembly 2 drives the upper die 4 downward. At this time, the upper die 4 carries the clamped part downward, which facilitates the automatic insertion of the part into the die hole opened in the lower die 3. This realizes the automatic insertion of the part to be stamped into the die hole without manual insertion, improving stamping efficiency. At the same time, the operator's hand does not need to be placed between the upper die 4 and the lower die 3 when adding parts, reducing the possibility of the operator's hand being crushed.

[0051] It should be noted that when the bottom of the part is blocked by the blocking rod 72, the bottom of the part contacts the top surface of the blocking rod 72. At this time, the top height of the part is below the top of the rubber ring belt 62. When the rubber ring belt 62 expands, it can not only limit the part from the side, but also a part of the expanded rubber ring belt 62 is above the part. As the upper mold 4 moves downward with the clamped part, the part is inserted into the mold hole opened by the lower mold 3. This improves the limiting and clamping effect of the part, reduces the slippage of the part during the insertion of the part into the mold hole, and ensures that the part can be smoothly inserted into the mold hole opened by the lower mold 3.

[0052] After the part is placed into the die hole of the lower die 3, the clamping assembly 6 releases the clamping of the part. Then the cylinder assembly 2 moves the upper die 4 upward until the part is below the transfer plate 11. At this time, the output shaft of the third electric telescopic rod retracts, causing the transfer plate 11 to slide at the bottom of the upper die 4. At this time, the transfer plate 11 can block the passage groove 10. Then the output shaft of the cylinder assembly 2 moves the transfer plate 11 downward. The transfer plate 11 punches the top of the part, so that the top of the part is pressed into the wider part of the die hole, and the cylindrical part is punched into a flat-headed locating pin with a larger end diameter.

[0053] It should be noted that during the initial insertion of the part into the die hole of the lower die 3, the output shaft of the third electric telescopic rod is in the extended state, so that the moving plate 11 does not block the passage slot 10.

[0054] The clamping assembly 6 also includes an internal slide 64 slidably connected to the upper mold 4. The top of the slide 64 is equipped with a first electric telescopic rod 65 for driving the slide 64 to move up and down. The first electric telescopic rod 65 is fixed inside the upper mold 4. The output shaft of the first electric telescopic rod 65 is fixed to the slide 64. The clamping assembly 6 also includes a small rod 66 fixedly connected to the top of the push plate 63. The top of the small rod 66 extends into the slide 64 and is rotatably connected to a ball bearing 67. O-rings 68 are installed on both the inner and outer sides of the push plate 63. The O-rings 68 on both the inner and outer sides are in contact with the inner side of the round tube 61.

[0055] By adopting the above technical solution, when it is necessary to clamp the parts, the output shaft of the first electric telescopic rod 65 extends, causing the slide 64 to move downward. At this time, the bottom of the slide 64 squeezes the ball 67 and the small rod 66. The small rod 66 moves downward with the push plate 63, which increases the pressure of the medium inside the round tube 61 located below the push plate 63, thereby realizing the expansion of the rubber ring belt 62 to clamp the parts.

[0056] The rubber ring belt 62 has high elasticity and corrosion resistance. When it is necessary to release the clamping of the part, the output shaft of the first electric telescopic rod 65 retracts, causing the slide 64 to move upward. At this time, under the elastic force of the rubber ring belt 62 itself, the rubber ring belt 62 retracts and returns to its original position. At this time, the rubber ring belt 62 will not clamp the part. Under the action of the medium pressure, the push plate 63 moves upward with the small rod 66 to reset.

[0057] The design of the O-ring 68 ensures good sealing between the inner and outer sides of the push plate 63 and the inner side of the round tube 61.

[0058] The sweeping assembly 7 also includes a rotating shaft 73 rotating on both sides of the upper mold 4. The end of the rotating shaft 73 is fixedly connected to a first gear 75. The sweeping assembly 7 also includes a first rack 76. The bottom of the first rack 76 is fixed to the lower mold 3. The first rack 76 is provided with teeth. The teeth of the first rack 76 mesh with the first gear 75. The sweeping assembly 7 also includes a motion frame 74 fixedly connected to the outer wall of the rotating shaft 73. The bottom of the motion frame 74 slides against the top of the swing frame 71. A U-shaped spring piece 77 is fixedly connected between the motion frame 74 and the swing frame 71. A friction block 78 is fixedly connected to the outer wall of the rotating shaft 73 inside the upper mold 4.

[0059] By adopting the above technical solution, when the falling component 5 places the part inside the passage groove 10, the bottom position of the swing frame 71 is located in front of the upper mold 4, and the rear end of the blocking rod 72 is located below the passage groove 10. When the part is inserted into the die hole or stamped, the upper mold 4 moves downward. Under the meshing action of the first gear 75 and the first rack 76, the first gear 75 rotates with the rotating shaft 73. At this time, the moving frame 74 rotates the swing frame 71 towards the rear end, so that when the upper mold 4 moves close to the lower mold 3, the obstruction between the upper mold 4 and the lower mold 3 is pushed out. For example, if the operator's hand is accidentally placed in this position during this process, the swing frame 71 and the blocking rod 72 swing to push the operator's hand out of the area, further reducing the possibility of hand injury, thereby further improving the safety of the device.

[0060] When the upper mold 4 moves upward, the first gear 75 reaches the position of the first rack 76 tooth. Under the meshing action of the first gear 75 and the first rack 76, the rotating shaft 73 rotates and resets the motion frame 74 and the swing frame 71 towards the rear end.

[0061] After the part is clamped, the swing of the swing frame 71 and the blocking rod 72 may be hindered by the part. Therefore, this solution is provided with a U-shaped spring 77. When the swing of the swing frame 71 and the blocking rod 72 is hindered, the moving frame 74 slides relative to the swing frame 71, the U-shaped spring 77 deforms, and rotates to the rear end position of the upper mold 4. Under the elastic force of the U-shaped spring 77, the moving frame 74 and the swing frame 71 move relative to each other and reset.

[0062] It should be noted that the friction force provided by the friction block 78 is much greater than the sum of the weights of the swing frame 71, the blocking rod 72, and the moving frame 74. The friction force provided by the friction block 78 is large, which provides a limiting effect on the swing frame 71. As the upper mold 4 moves, the first gear 75 moves to the part where the teeth of the first rack 76 are opened. Under the action of the opened teeth, the first gear 75 drives the rotating shaft 73, the swing frame 71, and the blocking rod 72 to rotate. When the first gear 75 moves to the position where the teeth of the first rack 76 are arranged, the first gear 75 does not rotate, and the large friction force provided by the friction block 78 limits the rotating shaft 73, the swing frame 71, and the blocking rod 72.

[0063] It should be noted that the first rack 76 has fewer teeth, which results in a smaller rotation angle of the swing frame 71, less than 180 degrees.

[0064] The falling component 5 includes a square groove 51 inside the upper mold 4 corresponding to the rear end of the through groove 10. An insertion cover 52 is fixedly connected to the rear side of the upper mold 4 corresponding to the square groove 51. An installation cover 53 is snapped onto the rear end of the insertion cover 52. The snapping can be detached by means of a snap-fit ​​connection. A second electric telescopic rod 54 is fixedly connected to the rear end of the installation cover 53. An extrusion plate 55 is fixedly connected through the installation cover 53. An elastic piece 56 is fixedly connected to the bottom inner side of the square groove 51 near the through groove 10.

[0065] By adopting the above technical solution, in the stage of loading the parts into the falling assembly 5, the mounting cover 53 is disassembled, and then the cylindrical parts are arranged in the square groove 51 and the insertion cover 52. After placement, the mounting cover 53 is installed by snap-fit. By controlling the output shaft of the second electric telescopic rod 54 to extend gradually, the extrusion plate 55 can move gradually to push the parts, thereby gradually adding parts.

[0066] It should be noted that the elastic plate 56 plays a certain limiting role, reducing the possibility of parts falling into the passage groove 10 due to shaking. In the initial state, the elastic plate 56 is slightly raised. When the output shaft of the second electric telescopic rod 54 extends and pushes the extrusion plate 55, the elastic plate 56 deforms flat under the action of the thrust, making it easier for the parts to fall into the interior of the passage groove 10.

[0067] Example 2: The technical solution of this example differs from that of Example 1 in that: Figures 1 to 3 and Figures 11 to 12 The stamping device also includes a rotating assembly 8 disposed inside the upper die 4. The rotating assembly 8 is used to rotate the round tube 61. The rotating assembly 8 includes a toothed ring 81 fixedly connected to the outer wall of the round tube 61. A second rack 82 is slidably connected to the front end of the toothed ring 81 inside the upper die 4. The teeth of the second rack 82 mesh with the toothed ring 81. A concave frame 83 is fixedly connected to the front end of the second rack 82. A vertical rod 84 is fixedly connected to the front end of the support frame 1. The vertical rod 84 passes through the inner side of the concave frame 83. Inclined blocks 85 are fixedly connected to both sides of the vertical rod 84 in an alternating manner. The top and bottom ends of the inclined blocks 85 are both inclined. A round shaft 86 is rotatably connected to the inner side of the concave frame 83. The round shaft 86 is used to reduce the resistance when the inclined blocks 85 and the concave frame 83 move relative to each other.

[0068] By adopting the above technical solution, during the process of the upper mold 4 moving downward to insert the part into the mold hole, as the upper mold 4 moves downward, relative movement occurs between the vertical rod 84 and the concave frame 83, thereby causing relative movement between the tilting block 85 and the concave frame 83. During this process, when one of the cylindrical shafts 86 moves close to one of the tilting blocks 85, under the limiting action of the tilting block 85, the cylindrical shaft 86 and the concave frame 83, along with the second rack 82, move in the left and right directions. At this time, the concave frame 83 will move closer to the tilting block 85 on the other side. As the upper mold 4 continues to move, the cylindrical shaft 86 on the other side is limited by the tilting block 85 on the other side. The use of this mechanism causes the round shaft 86 and the concave bracket 83 to move along the second rack 82. This allows the second rack 82 to move in the left and right direction during the insertion of the part into the mold hole. Under the action of the teeth on the second rack 82 meshing with the toothed ring 81, the toothed ring 81 will rotate the round tube 61 and the part held by it as the second rack 82 moves left and right. When the height of the mold hole and the part is matched, the rotation can distribute the force more evenly, thus reducing the wear on the part. At the same time, compared with simply inserting the part vertically downward, it can effectively reduce the friction between the contact surfaces, thereby improving the efficiency of inserting the part into the mold hole.

[0069] A sleeve 12 is fixedly connected to the front side of the upper mold 4. A T-shaped frame 13 is fixedly connected inside the sleeve 12. A circular plate 14 is movable inside the mold hole of the lower mold 3. A bending frame 15 is fixedly connected to the bottom of the circular plate 14. A blocking plate 9 is fixedly connected to the bottom of the bending frame 15, which extends into the bottom of the T-shaped frame 13.

[0070] By adopting the above technical solution, the stamped parts may be difficult to demold. After one stamping is completed, the output shaft of the cylinder assembly 2 is retracted as much as possible, so that the upper die 4 moves upward and the sleeve 12 moves upward accordingly. When the top of the T-shaped frame 13 is at the bottom position of the sleeve 12, the output shaft of the cylinder assembly 2 continues to retract, so that the T-shaped frame 13 moves upward with the blocking plate 9. The blocking plate 9 can lift the bending frame 15 from the bottom, making it easier for the bending frame 15 to move upward. Thus, the round plate 14 moves upward to lift the stamped parts, making demolding easier and improving demolding efficiency, thereby further improving the efficiency of stamped parts.

[0071] It should be noted that when the part is placed into the die hole, the part is not fully inserted. During the stamping process, the part can be fully inserted.

[0072] When the rear end of the blocking rod 72 is located below the passage slot 10 in the initial state, both the sleeve 12 and the vertical rod 84 are located in front of the swing frame 71.

[0073] A method of using a gear pump positioning pin stamping device includes the following steps:

[0074] S1. The cylindrical parts are arranged inside the square groove 51 and the insertion cover 52. After placement, the mounting cover 53 is installed by snap-fit. By controlling the output shaft of the second electric telescopic rod 54 to extend gradually, the extrusion plate 55 can move gradually to push the parts, so that parts can be added gradually. The output shaft of the first electric telescopic rod 65 extends, causing the slide 64 to move downward. At this time, the bottom of the slide 64 extrudes the ball 67 and the small rod 66. At this time, the small rod 66 moves downward with the push plate 63, which increases the pressure of the medium inside the round tube 61 below the push plate 63, thereby expanding the rubber ring 62 to clamp the parts. Then the upper mold 4 moves downward with the clamped parts, so that the parts can be automatically inserted into the die hole opened in the lower mold 3, thereby realizing the automatic insertion of the parts to be stamped into the die hole.

[0075] S2. After the part is placed into the die hole of the lower die 3, the clamping assembly 6 releases the clamping of the part. Then the cylinder assembly 2 moves the upper die 4 upward until the part is below the transfer plate 11. At this time, the output shaft of the third electric telescopic rod retracts, so that the transfer plate 11 slides at the bottom of the upper die 4. At this time, the transfer plate 11 can block the passage groove 10. Then the output shaft of the cylinder assembly 2 moves the transfer plate 11 downward, and the transfer plate 11 punches the top of the part.

[0076] Working principle: When the falling assembly 5 places the part inside the through groove 10, the bottom of the swing frame 71 is located in front of the upper die 4, while the rear end of the blocking rod 72 is located below the through groove 10. When the part is inserted into the die hole or stamped, the upper die 4 moves downward. Under the meshing action of the first gear 75 and the first rack 76, the first gear 75 rotates the rotating shaft 73. At this time, the moving frame 74 rotates the swing frame 71 towards the rear end, so that when the upper die 4 moves close to the lower die 3, the obstruction between the upper die 4 and the lower die 3 is pushed out. For example, if the operator's hand is accidentally placed in this position during this process, the swing frame 71 and the blocking rod 72 swing to push the operator's hand out of this area, further reducing the possibility of hand injury.

[0077] During the downward movement of the upper mold 4 to insert the part into the mold hole, the vertical rod 84 and the concave frame 83 move relative to each other, causing relative movement between the tilting block 85 and the concave frame 83. During this process, when one of the cylindrical shafts 86 moves closer to one of the tilting blocks 85, the cylindrical shaft 86 and the concave frame 83, along with the second rack 82, move left and right under the limiting action of the tilting block 85. At this time, the concave frame 83 moves closer to the other tilting block 85. As the upper mold 4 continues to move, the cylindrical shaft 86 on the other side is limited by the tilting block 85 on the other side, causing the cylindrical shaft... The second rack 82 moves along with the concave frame 83, allowing it to move left and right during the insertion of the part into the mold hole. The teeth on the second rack 82 mesh with the toothed ring 81, causing the toothed ring 81 to rotate along with the round tube 61 and the part it holds. When the mold hole and the part are matched at the same height, the rotation can distribute the force more evenly, thus reducing wear on the part. At the same time, compared with simply inserting the part vertically downwards, it can effectively reduce the friction between the contact surfaces, thereby improving the efficiency of inserting the part into the mold hole.

[0078] The output shaft of cylinder assembly 2 continues to retract, causing T-shaped frame 13 to move upward with blocking plate 9. Blocking plate 9 can lift bending frame 15 from the bottom, making it easier for bending frame 15 to move upward. As a result, round plate 14 moves upward to lift the stamped part, making demolding easier and improving demolding efficiency.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gear pump positioning pin stamping device, comprising a support frame (1), a cylinder assembly (2) disposed on the top of the support frame (1), a lower die (3) disposed on the bottom of the support frame (1), and an upper die (4) disposed on the top of the support frame (1) for cooperating with the lower die (3) to complete the stamping, the cylinder assembly (2) being used to drive the upper die (4) to rise and fall, characterized in that, The stamping device also includes: The falling assembly (5) is located at the rear end of the upper die (4) and is used to control the falling of the stamped parts. The falling assembly (5) includes a square groove (51) opened inside the upper die (4) corresponding to the rear end of the through groove (10). An insertion cover (52) is fixedly connected to the rear side of the upper die (4) corresponding to the square groove (51). An installation cover (53) is snapped into the rear end of the insertion cover (52). A second electric telescopic rod (54) is fixedly connected to the rear end of the installation cover (53). An extrusion plate (55) is fixedly connected through the output shaft of the second electric telescopic rod (54) through the installation cover (53). An elastic piece (56) is fixedly connected to the bottom of the inner side of the square groove (51) near the through groove (10). Through the slot (10), which is located inside the upper die (4), the stamped part passes through its interior after falling down, and a sliding plate (11) slides at the bottom of the upper die (4). The clamping assembly (6) is disposed inside the upper mold (4) and is used to clamp the part. When the upper mold (4) moves downward and inserts the bottom of the part into the mold hole opened in the lower mold (3), it plays the role of limiting the part. The clamping assembly (6) includes a round tube (61) disposed inside the upper mold (4) corresponding to the position outside the through groove (10). A rubber ring belt (62) is disposed on the inner side of the round tube (61). The round tube (61) is filled with a medium. A push plate (63) is disposed inside the round tube (61). The pressure of the medium changes when the push plate (63) moves up and down. The clamping assembly (6) also includes an internal slide (64) slidably connected to the upper mold (4). A first electric telescopic rod (65) for driving the slide (64) to move up and down is disposed on the top of the slide (64). The clamping assembly (6) also includes a small rod (66) fixedly connected to the top of the push plate (63). A ball bearing (67) is rotatably connected to the top of the small rod (66) near the slide (64). The sweeping assembly (7) is disposed outside the upper mold (4). The sweeping assembly (7) includes a swing frame (71) disposed outside the upper mold (4). When the upper mold (4) moves downward, the swing frame (71) rotates. The rear end of the swing frame (71) is connected to a blocking rod (72) below the slot (10). The sweeping assembly (7) also includes a rotating shaft (73) rotating on both sides of the upper mold (4). The end of the rotating shaft (73) is fixedly connected to a first gear (75). The sweeping assembly (7) also includes a first rack (76), the bottom of which is fixed to the lower mold (3). The first rack (76) is provided with teeth. The teeth of the first rack (76) mesh with the first gear (75). The sweeping assembly (7) also includes a motion frame (74) fixedly connected to the outer wall of the rotating shaft (73). The bottom of the motion frame (74) slides with the top of the swing frame (71). A U-shaped spring piece (77) is fixedly connected between the motion frame (74) and the swing frame (71).

2. The gear pump positioning pin stamping device according to claim 1, characterized in that: O-rings (68) are installed on both the inner and outer sides of the push plate (63), and the O-rings (68) on both the inner and outer sides are in contact with the inner side of the round tube (61).

3. The gear pump positioning pin stamping device according to claim 2, characterized in that: The outer wall of the rotating shaft (73) is fixedly connected to the friction block (78) inside the upper mold (4).

4. The gear pump positioning pin stamping device according to claim 3, characterized in that, The stamping device also includes: A rotating assembly (8) is disposed inside the upper mold (4) for rotating the round tube (61). The rotating assembly (8) includes a toothed ring (81) fixedly connected to the outer wall of the round tube (61). A second rack (82) is slidably connected to the front end of the toothed ring (81) inside the upper mold (4). The teeth of the second rack (82) mesh with the toothed ring (81). A concave frame (83) is fixedly connected to the front end of the second rack (82). A vertical rod (84) is fixedly connected to the front end of the support frame (1). The vertical rod (84) passes through the inner side of the concave frame (83). Inclined blocks (85) are fixedly connected to both sides of the vertical rod (84). The top and bottom ends of the inclined blocks (85) are inclined. A round shaft (86) is rotatably connected to the inner side of the concave frame (83).

5. The gear pump positioning pin stamping device according to claim 4, characterized in that: The upper mold (4) is fixedly connected to the front side of the sleeve (12), and the sleeve (12) is fixedly connected to the inside of the T-shaped frame (13). The lower mold (3) has a circular plate (14) inside the mold hole, and the bottom of the circular plate (14) is fixedly connected to the bending frame (15). The bottom of the T-shaped frame (13) extends into the bottom of the bending frame (15) and is fixedly connected to the bottom of the bending frame (15) with a blocking plate (9).

6. A method of using a gear pump positioning pin stamping device, characterized in that: This method is applicable to the gear pump locating pin stamping device according to any one of claims 1-5, and includes the following steps: S1. Feeding: Place the part into the dropping assembly (5). The dropping assembly (5) places the part into the passage groove (10). The clamping assembly (6) clamps the part and moves the upper mold (4) downward to place the part into the mold hole. S2, stamping, the moving plate (11) moves to block the passage groove (10), and the upper die (4) moves downward to stamp the part.

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