Gear pump positioning pin stamping device and using method thereof

Abstract

The invention relates to the technical field of stamping, and particularly discloses a gear pump positioning pin stamping device which comprises a supporting frame, an air cylinder assembly is arranged at the top of the supporting frame, a lower die is arranged at the bottom of the supporting frame, an upper die used for being matched with the lower die to complete stamping is arranged at the top of the supporting frame, and the air cylinder assembly is used for driving the upper die to ascend and descend. The stamping device further comprises a falling assembly, a passing groove, a clamping assembly and a sweeping-out assembly, a moving plate slides at the bottom of the upper die, the clamping assembly comprises a round pipe arranged in the upper die and corresponding to the outer position of the passing groove, a rubber ring belt is arranged on the inner side of the round pipe, a push plate is arranged in the round pipe, and when the push plate moves up and down, the pressure of a medium changes. Through cooperation of the structures, parts needing to be punched can be automatically inserted into the die holes, the parts do not need to be manually inserted, the punching efficiency is improved, meanwhile, the hands of an operator do not need to be placed between the upper die and the lower die when the parts are added, and the possibility that the hands of the operator are crushed is reduced.

Description

Technical Field

[0001] The present invention relates to the field of stamping technology, in particular to a gear pump positioning pin stamping device and a use method thereof. Background Art

[0002] The pump body and front and rear pump covers of the gear pump need to be precisely positioned through 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 molding with a mold, a large number of parts of the same specifications can be produced in a short time, far exceeding the efficiency of 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] In order to improve the efficiency of parts stamping, multiple stamping stations can be designed to improve the efficiency of stamping production. For example, the "multi-station stamping device" with the publication number "CN205183450U" completes the one-time stamping of the workpiece through the design of several stamping heads arranged at the lower end of the stamping plate, which greatly improves the stamping effect and 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 move his hand out of the stamping area and then perform 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 and the part to be stamped need to be highly adapted. This makes it difficult to insert the part into the die hole, thereby affecting the processing efficiency. Moreover, if the part is placed manually and the stamping step is accidentally triggered, the operator's hand may be injured, thereby affecting the safety of the operation. Summary of the Invention

[0005] The purpose of the present invention is to provide a gear pump locating pin stamping device and a method of using the same, which can automatically insert the parts to be stamped into the die hole without manually inserting the parts, thereby improving the efficiency of stamping. At the same time, the operator's hands do not need to be placed between the upper die and the lower die when adding parts, reducing the possibility of the operator's hands being crushed, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a gear pump positioning pin stamping device, comprising a support frame, a cylinder assembly configured on the top of the support frame, a lower die configured on the bottom of the support frame, an upper die configured on the top of the support frame for cooperating with the lower die to complete stamping, the cylinder assembly being used to drive the upper die to rise and fall, and the stamping device further comprising:

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

[0008] The through slot is arranged inside the upper die, and the stamped parts pass through it after falling down. A shift plate is sliding at the bottom of the upper die;

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

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

[0011] Preferably, the clamping assembly further comprises:

[0012] An internal slide slidably connected to the upper mold, with a first electric telescopic rod configured on the top of the slide for driving the slide to move up and down;

[0013] A small rod is fixedly connected to the top of the push plate, and the top of the small rod extends into a position close to the slide 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 circular tube.

[0015] Preferably, the sweeping component further comprises:

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

[0017] The bottom of the first rack is fixed to the lower die. The first rack is provided with teeth, and the teeth of the first rack are meshed with the first gear.

[0018] Preferably, the sweeping component further comprises:

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

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

[0021] Preferably, the punching device further comprises:

[0022] The rotating assembly is arranged inside the upper mold and is used to rotate the circular tube. The rotating assembly includes a gear ring fixedly connected to the outer wall of the circular tube. The interior of the upper mold is located at the front end of the gear ring and is slidably connected to a second rack. The teeth set in the second rack are engaged with the gear ring. The front end of the second rack is fixedly connected to a concave frame. The front end of the support frame is fixedly connected to a vertical rod. The vertical rod passes through the inner side of the concave frame. The two sides of the vertical rod are staggered and fixedly connected with inclined blocks. The top and bottom ends of the inclined blocks are both inclined. The inner side of the concave frame is rotatably connected to a circular shaft.

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

[0024] Preferably, it is characterized in that: the falling assembly includes a square groove opened 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, the rear end of the insertion cover is clamped with a mounting cover, the rear end of the mounting cover is fixedly connected to the second electric telescopic rod, the output shaft of the second electric telescopic rod passes through the mounting cover and is fixedly connected to the extrusion plate, and an elastic sheet is fixedly connected to the inner bottom of the square groove near the through groove.

[0025] A method for using a gear pump positioning pin punching device, comprising the following steps:

[0026] S1. Loading: Place the part into the drop assembly, which then passes through the slot. The clamping assembly clamps the part and the upper die moves downward to place the part into the die hole.

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

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. Through the cooperation of the drop assembly and the clamping assembly, the parts to be stamped can be automatically inserted into the die hole, eliminating the need to manually insert the parts, 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 the operator's hands being crushed;

[0030] 2. Through the function of the sweep-out assembly, when the upper die moves close to the lower die, the obstruction between the upper die and the lower die can be pushed out. If the operator's hand is accidentally located in this position, the swing frame and the blocking rod will swing to push the operator's hand out of the area, further reducing the possibility of the hand being crushed, thereby further improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

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

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

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

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

[0036] Figure 5 A schematic diagram of the partial structure of the sweeping assembly of the present invention;

[0037] Figure 6 It is a partial cross-sectional structural schematic diagram of the swing frame of the present invention;

[0038] Figure 7 Schematic diagram of the structure of the upper mold of the present invention when viewed from above;

[0039] Figure 8 It is a partial cross-sectional structural schematic diagram of the clamping assembly of the present invention;

[0040] Figure 9 It is a partial side structural schematic diagram of the extruded plate of the present invention;

[0041] Figure 10 It is a partial side cross-sectional structural diagram of the insertion cover of the present invention;

[0042] Figure 11 Schematic diagram of the cross-sectional structure of the upper mold of the present invention;

[0043] Figure 12 It is a schematic diagram of the half-section structure of the sleeve frame of the present invention.

[0044] Description of reference numerals:

[0045] 1. Support frame; 2. Cylinder assembly; 3. Lower die; 4. Upper die; 5. Drop assembly; 51. Square groove; 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; 63. Push plate; 64. Slide; 65. First electric telescopic rod; 66. Small rod; 67. Ball bearing; 68. O-ring; 7. Sweep-out assembly; 7 1. Swing frame; 72. Blocking rod; 73. Rotating shaft; 74. Moving frame; 75. First gear; 76. First rack; 77. U-shaped spring piece; 78. Friction block; 8. Rotating assembly; 81. Gear ring; 82. Second rack; 83. Concave frame; 84. Vertical rod; 85. Tilting block; 86. Circular shaft; 9. Blocking plate; 10. Passing slot; 11. Shifting plate; 12. Sleeve frame; 13. T-shaped frame; 14. Circular plate; 15. Bending frame. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0047] Example 1: Please refer to Figures 1 to 10The present invention provides a technical solution: a gear pump positioning pin stamping device, comprising a support frame 1, a cylinder assembly 2 is fixedly installed on the top of the support frame 1, the cylinder assembly 2 includes a cylinder and an air pressure passage. The technology is a mature existing technology, so it will not be described in detail. The bottom of the support frame 1 is installed with a lower mold 3, and the top of the support frame 1 is provided with an upper mold 4 for cooperating with the lower mold 3 to complete stamping. The top of the upper mold 4 is installed with the output shaft of the cylinder assembly 2, and the cylinder assembly 2 is used to drive the upper mold 4 to rise and fall. The stamping device also includes a falling assembly 5 arranged at the rear end of the upper mold 4, and the falling assembly 5 is used to control the falling of the parts to be stamped. The stamping device also includes a through groove 10 opened inside the upper mold 4, and the stamped parts pass through it after falling. A moving plate 11 is sliding at the bottom of the upper mold 4, and the upper mold 4 is fixedly connected to a third electric telescopic rod, and the output shaft of the third electric telescopic rod is fixedly connected to the moving plate 11 The stamping device also includes a clamping assembly 6, which is arranged inside the upper mold 4 and is used to clamp the part. When the upper mold 4 moves downward to insert the bottom of the part into the mold hole opened in the lower mold 3, it plays a role in limiting the part. The clamping assembly 6 includes a circular tube 61 that rotates inside the upper mold 4 and corresponds to the external position of the groove 10. The inner side of the circular tube 61 is provided with a rubber ring belt 62. The interior of the circular tube 61 is filled with a medium. The interior of the circular tube 61 is provided with a push plate 63. 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 arranged outside the upper mold 4. The sweeping assembly 7 includes a swinging frame 71 arranged outside the upper mold 4. When the upper mold 4 moves downward, the swinging frame 71 rotates. The rear end of the swinging frame 71 corresponds to the fixed blocking rod 72 below the groove 10, and the position of the groove 10 corresponds to the mold hole opened in the lower mold 3, and the bottom position of the groove 10 is adapted to the part.

[0048] By adopting the above technical solution, when performing stamping processing, the cylindrical parts are first cut into appropriate lengths and heated to perform annealing and softening treatment. The annealed parts are then stamped into shape by the device.

[0049] During stamping, the cylindrical parts to be processed are first placed into the insertion cover 52 and the square groove 51 inside the falling assembly 5. Under the action of the falling assembly 5, the parts fall into the interior of the through groove 10 in turn. Then, by controlling the movement of the push plate 63 to change the pressure of the internal medium of the circular tube 61, the rubber ring belt 62 can be expanded to squeeze and clamp the parts. The design of the blocking rod 72 can block the bottom of the part to prevent the part from being discharged from the bottom of the through groove 10 without being clamped and limited by the clamping assembly 6.

[0050] After the part is clamped, the upper die 4 is moved downward by the output shaft of the cylinder assembly 2. At this time, the upper die 4 moves downward with the clamped part, so that the part is automatically inserted into the die hole opened by the lower die 3, thereby automatically inserting the part to be stamped into the die hole. There is no need to manually insert the part, which improves the efficiency of stamping. At the same time, the operator's hands do 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 hands 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 band 62. When the rubber ring band 62 expands, it can not only limit the part from the side, but also a part of the rubber ring band 62 is located above the part after expansion. When the upper mold 4 moves downward with the clamped part and the part is inserted into the mold hole opened by the lower mold 3, the limiting clamping effect of the part is improved, and the slippage of the part during the insertion of the part into the mold hole is reduced, ensuring 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 opened in the lower die 3, the clamping of the part is released by the clamping assembly 6, and then the cylinder assembly 2 moves the upper die 4 upward until the part is located under the shift plate 11. At this time, the output shaft of the third electric telescopic rod contracts, so that the shift plate 11 slides at the bottom of the upper die 4. At this time, the shift plate 11 can block the through slot 10, and then the output shaft of the cylinder assembly 2 moves the shift plate 11 downward. The shift plate 11 punches the top of the part, so that the position of the top of the part is pressed into the wider position of the top of the die hole, and the cylindrical part is punched into a flat-head locating pin with a larger end diameter.

[0053] It should be noted that, during the initial process of inserting the part into the die hole formed in the lower die 3 , the output shaft of the third electric telescopic rod is in an extended state, so that the moving plate 11 does not block the through 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 configured 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 to the inside of 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 a position near 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 the inner and outer sides are both 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 part, the output shaft of the first electric telescopic rod 65 is extended, 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. At this time, the small rod 66 moves downward with the push plate 63, causing the medium pressure inside the circular tube 61 below the push plate 63 to increase, thereby achieving the expansion of the rubber ring belt 62 to clamp the part.

[0056] The rubber ring belt 62 has high elasticity and corrosion resistance. When the parts need to be released, the output shaft of the first electric telescopic rod 65 is contracted, 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 contracts and recovers. At this time, the rubber ring belt 62 will not clamp the parts. At this time, 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 circular tube 61 .

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

[0059] By adopting the above technical solution, when the falling assembly 5 places the part inside the through slot 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 through slot 10. When the part is inserted into the mold 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 toward the rear end with the swing frame 71, 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, during this process, the operator's hand is accidentally located in this position, and 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 the hand being crushed, 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 teeth of the first rack 76. Under the action of the teeth meshing of the first gear 75 and the first rack 76, the rotating shaft 73 rotates and resets with the moving frame 74 and the swing frame 71 toward the rear end.

[0061] When the parts are clamped, the swinging of the swing frame 71 and the blocking rod 72 may be hindered by the parts. Therefore, this solution provides a U-shaped spring piece 77. When the swinging of the swing frame 71 and the blocking rod 72 is hindered, the moving frame 74 slides relative to the swing frame 71, and the U-shaped spring piece 77 is deformed. When it rotates to the rear end position of the upper mold 4, under the elastic force of the U-shaped spring piece 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 gravity of the swing frame 71, the blocking rod 72 and the moving frame 74. The friction force provided by the friction block 78 is relatively 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 of the tooth opened by the first rack 76. Under the action of the opened teeth, the first gear 75 rotates with the rotating shaft 73, the swing frame 71 and the blocking rod 72. When the first gear 75 moves to the position where the first rack 76 is equipped with teeth, the first gear 75 does not rotate at this time, 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 number of teeth on the first rack 76 is relatively small, so that the rotation angle of the swing frame 71 is relatively small, less than one hundred and eighty degrees.

[0064] The falling assembly 5 includes a square groove 51 opened inside the upper mold 4 corresponding to the rear end of the through groove 10, and an insertion cover 52 is fixedly connected to the rear side of the upper mold 4 corresponding to the square groove 51. The rear end of the insertion cover 52 is clamped with a mounting cover 53, and the clamping can be detachably connected by a snap connection. The rear end of the mounting cover 53 is fixedly connected to a second electric telescopic rod 54, and the output shaft of the second electric telescopic rod 54 passes through the mounting cover 53 and is fixedly connected to an extrusion plate 55, and the inner bottom of the square groove 51 is fixedly connected near the through groove 10 with an elastic sheet 56.

[0065] By adopting the above technical solution, when loading the parts into the falling assembly 5, the mounting cover 53 is disassembled, and then the cylindrical parts are arranged and placed inside the square groove 51 and the insertion cover 52. After the placement is completed, the mounting cover 53 is installed by snapping, and the output shaft of the second electric telescopic rod 54 is controlled to gradually extend, so that the extrusion plate 55 can be gradually moved to push the parts, so that the parts can be added gradually.

[0066] It should be noted that the elastic sheet 56 plays a certain limiting role, reducing the situation where parts fall into the through-slot 10 due to shaking. In the initial state, the elastic sheet 56 is slightly tilted. When the output shaft of the second electric telescopic rod 54 extends to push the extrusion plate 55, the elastic sheet 56 is deformed flat under the action of the thrust, making it easier for the parts to fall into the interior of the through-slot 10.

[0067] Embodiment 2: The technical solution of this embodiment is different from that of embodiment 1 in that: Figures 1 to 3 and Figures 11 to 12 The stamping device also includes a rotating assembly 8 arranged inside the upper mold 4, and the rotating assembly 8 is used to rotate the circular tube 61. The rotating assembly 8 includes a gear ring 81 fixedly connected to the outer wall of the circular tube 61. The interior of the upper mold 4 is located at the front end of the gear ring 81 and is slidably connected to a second rack 82. The teeth set in the second rack 82 are engaged with the gear ring 81. The front end of the second rack 82 is fixedly connected to a concave frame 83. The front end of the support frame 1 is fixedly connected to a vertical rod 84. The vertical rod 84 passes through the inner side of the concave frame 83. The two sides of the vertical rod 84 are staggered and fixedly connected with inclined blocks 85. The top and bottom ends of the inclined blocks 85 are inclined. The inner side of the concave frame 83 is rotatably connected with a circular shaft 86. The circular shaft 86 is used to reduce the resistance during the relative movement of the inclined block 85 and the concave frame 83.

[0068] By adopting the above technical solution, in the process of the upper mold 4 moving downward to insert the part into the mold hole, as the upper mold 4 moves downward, the vertical rod 84 and the concave frame 83 can generate relative movement, thereby generating relative movement between the tilting block 85 and the concave frame 83. In this process, when one of the circular shafts 86 moves close to one of the tilting blocks 85, under the limiting action of the tilting block 85, the circular shaft 86 and the concave frame 83 with the second rack 82 generate left and right movement. At this time, the concave frame 83 will approach the tilting block 85 on the other side. As the upper mold 4 continues to move, the circular shaft 86 on the other side is limited by the tilting block 85 on the other side. The circular shaft 86 and the concave frame 83 move with the second rack 82, so that in the process of inserting the part into the die hole, the second rack 82 will move in the left and right directions. Under the action of the engagement between the teeth set in the second rack 82 and the gear ring 81, when the second rack 82 moves left and right, the gear ring 81 will rotate with the circular tube 61 and the part clamped by it. When the die hole and the part are highly adapted, the rotation can make the force distribution more even, thereby reducing the wear on the part. At the same time, compared with the method of simply inserting the part vertically downward, the friction between the contact surfaces can be effectively reduced, thereby improving the efficiency of inserting the part into the die hole.

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

[0070] By adopting the above technical solution, the parts may be difficult to demold after stamping. After completing a stamping, the output shaft of the cylinder assembly 2 is contracted as much as possible, so that the upper mold 4 moves upward, and the sleeve 12 moves upward accordingly. When the top of the T-shaped frame 13 is located at the bottom position of the sleeve 12, the output shaft of the cylinder assembly 2 continues to contract, so that the T-shaped frame 13 moves upward with the blocking plate 9, which can lift the bent frame 15 from the bottom of the blocking plate 9 to facilitate the upward movement of the bent frame 15, so that the circular plate 14 moves upward to lift the stamped parts, making demolding easier, improving the efficiency of demolding, and further improving the efficiency of stamping parts.

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

[0072] In the initial state, when the rear end of the blocking rod 72 is located below the passing slot 10 , the sleeve frame 12 and the vertical rod 84 are both located at the front side of the swing frame 71 .

[0073] A method for using a gear pump positioning pin punching device, comprising the following steps:

[0074] S1. Arrange the cylindrical parts and place them inside the square groove 51 and the insertion cover 52. After placement, install the installation cover 53 by snapping. By controlling the output shaft of the second electric telescopic rod 54 to gradually extend, the extrusion plate 55 can be gradually moved to push the parts, so that parts can be added step by step. 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. At this time, the small rod 66 moves the push plate 63 downward, causing the medium pressure inside the circular tube 61 below the push plate 63 to increase, thereby achieving the expansion of the rubber ring 62 to clamp the parts. Then the upper mold 4 moves downward with the clamped parts, so that the parts are automatically inserted into the mold hole opened by the lower mold 3, thereby realizing the automatic insertion of the parts to be stamped into the mold hole.

[0075] S2. After the part is placed into the die hole opened in the lower die 3, the clamping of the part is released by the clamping assembly 6, and then the cylinder assembly 2 moves the upper die 4 upward until the part is located below the shift plate 11. At this time, the output shaft of the third electric telescopic rod contracts, causing the shift plate 11 to slide on the bottom of the upper die 4. At this time, the shift plate 11 can block the through slot 10, and then the output shaft of the cylinder assembly 2 moves the shift plate 11 downward, and the shift plate 11 punches the top of the part.

[0076] Working principle: When the falling assembly 5 places the part inside the through slot 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 through slot 10. When the part is inserted into the mold 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 toward the rear end with the swing frame 71, 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, during this process, the operator's hand is accidentally located in this position, and 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 the hand being crushed.

[0077] In the process of the upper mold 4 moving downward to insert the part into the mold hole, as the upper mold 4 moves downward, the vertical rod 84 and the concave frame 83 can generate relative movement, thereby generating relative movement between the tilting block 85 and the concave frame 83. In this process, when one of the circular shafts 86 moves close to one of the tilting blocks 85, under the limiting action of the tilting block 85, the circular shaft 86 and the concave frame 83 with the second rack 82 generate left and right movement. At this time, the concave frame 83 will approach the tilting block 85 on the other side. As the upper mold 4 continues to move, the circular shaft 86 on the other side is limited by the tilting block 85 on the other side, so that the circular shaft 86 and the concave frame 83 move with the second rack 82, so that in the process of inserting the part into the die hole, the second rack 82 will move in the left and right directions. Under the action of the engagement between the teeth set on the second rack 82 and the gear ring 81, when the second rack 82 moves left and right, the gear ring 81 will rotate with the round tube 61 and the part clamped by it. When the die hole and the part are highly adapted, the rotation can make the force distribution more even, thereby reducing the wear on the part. At the same time, compared with the method of simply inserting the part vertically downward, the friction between the contact surfaces can be effectively reduced, thereby improving the efficiency of inserting the part into the die hole.

[0078] The output shaft of the cylinder assembly 2 continues to contract, causing the T-shaped frame 13 to move upward with the blocking plate 9, which can lift the bent frame 15 from the bottom, making it easier for the bent frame 15 to move upward, so that the circular plate 14 moves upward to lift the stamped parts, making demoulding easier and improving demoulding efficiency.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements 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 punching device, comprising a support frame (1), a cylinder assembly (2) configured on the top of the support frame (1), a lower die (3) configured on the bottom of the support frame (1), an upper die (4) configured on the top of the support frame (1) for cooperating with the lower die (3) to complete the punching, the cylinder assembly (2) being used to drive the upper die (4) to rise and fall, characterized in that: The stamping device also includes: A drop assembly (5) is arranged at the rear end of the upper die (4) and is used to control the drop of the stamped parts; A through slot (10) is arranged inside the upper die (4), and the punched parts pass through the inside after falling down. A shift plate (11) is slidably provided at the bottom of the upper die (4); The clamping assembly (6) is arranged inside the upper mold (4) and is used to clamp the part. When the upper mold (4) moves downward to insert the bottom of the part into the mold hole opened in the lower mold (3), the clamping assembly (6) plays a role in limiting the part. The clamping assembly (6) includes a circular tube (61) arranged inside the upper mold (4) and corresponding to the outer position of the groove (10). The inner side of the circular tube (61) is provided with a rubber ring belt (62). The interior of the circular tube (61) is filled with a medium. The interior of the circular tube (61) is provided with a push plate (63). When the push plate (63) moves up and down, the pressure of the medium changes. The sweeping assembly (7) is arranged outside the upper mold (4). The sweeping assembly (7) includes a swing frame (71) arranged 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 correspondingly arranged below the groove (10).

2. A gear pump positioning pin punching device according to claim 1, characterized in that: The clamping assembly (6) further comprises: An internal slide (64) is slidably connected to the upper mold (4), and a first electric telescopic rod (65) is configured on the top of the slide (64) for driving the slide (64) to move up and down; A small rod (66) is fixedly connected to the top of the push plate (63), and the top of the small rod (66) extends into a position close to the slide (64) and is rotatably connected to a ball (67).

3. A gear pump positioning pin punching device according to claim 2, characterized in that: O-type sealing rings (68) are installed on both the inner and outer sides of the push plate (63), and the O-type sealing rings (68) on both the inner and outer sides are fitted with the inner side of the circular tube (61).

4. A gear pump positioning pin punching device according to claim 1, characterized in that: The sweeping assembly (7) further comprises: A rotating shaft (73) rotates on both sides of the upper mold (4), and the end of the rotating shaft (73) is fixedly connected to the first gear (75); The first rack (76) has a bottom portion fixed to the lower die (3). The first rack (76) is provided with teeth, and the teeth of the first rack (76) are meshed with the first gear (75).

5. A gear pump positioning pin punching device according to claim 4, characterized in that: The sweeping assembly (7) further comprises: The moving frame (74) is fixedly connected to the outer wall of the rotating shaft (73), the bottom of the moving frame (74) slides with the top of the swing frame (71), and a U-shaped spring piece (77) is fixedly connected between the moving frame (74) and the swing frame (71).

6. A gear pump positioning pin punching device according to claim 5, characterized in that: The outer wall of the rotating shaft (73) is located inside the upper mold (4) and is fixedly connected with a friction block (78).

7. A gear pump positioning pin punching device according to claim 1, characterized in that: The stamping device also includes: The rotating assembly (8) is arranged inside the upper mold (4) and is used to rotate the circular tube (61). The rotating assembly (8) includes a toothed ring (81) fixedly connected to the outer wall of the circular 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 provided on the second rack (82) are engaged with the toothed ring (81). The front end of the second rack (82) is fixedly connected to a concave frame (83). The front end of the support frame (1) is fixedly connected to a vertical rod (84). The vertical rod (84) passes through the inner side of the concave frame (83). The two sides of the vertical rod (84) are staggered and fixedly connected with tilting blocks (85). The top and bottom ends of the tilting blocks (85) are both tilted. The inner side of the concave frame (83) is rotatably connected to a circular shaft (86).

8. The gear pump positioning pin punching device according to claim 1, characterized in that: The front side of the upper mold (4) is fixedly connected to a sleeve frame (12), the interior of the sleeve frame (12) is fixedly connected to a T-shaped frame (13), a circular plate (14) is movably provided inside the mold hole of the lower mold (3), the bottom of the circular plate (14) is fixedly connected to a bent frame (15), and the bottom of the T-shaped frame (13) extends into the bottom of the bent frame (15) and is fixedly connected to a blocking plate (9).

9. The gear pump positioning pin punching device according to claim 1, characterized in that: The drop assembly (5) comprises a square groove (51) opened 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); a mounting cover (53) is clamped at the rear end of the insertion cover (52); a second electric telescopic rod (54) is fixedly connected to the rear end of the mounting cover (53); an output shaft of the second electric telescopic rod (54) passes through the mounting cover (53) and is fixedly connected to an extrusion plate (55); and an elastic sheet (56) is fixedly connected to the inner bottom of the square groove (51) near the through groove (10).

10. A method for using a gear pump positioning pin punching device, characterized in that: The method is applicable to the gear pump positioning pin punching device according to any one of claims 1 to 9, and comprises the following steps: S1, feeding, placing the parts into the drop assembly (5), placing the parts into the interior of the through slot (10) through the drop assembly (5), the clamping assembly (6) clamps the parts and cooperates with the upper die (4) to move downward to place the parts into the die hole; S2, stamping, the shift plate (11) moves to block the through slot (10), and cooperates with the upper die (4) to move downward to stamp the parts.

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