Synchronous adjusting structure of double-point press

Abstract

The utility model discloses a synchronous adjusting structure of double point press, including frame, driving gear wheel, driven gear wheel subassembly, crankshaft no.

Description

Technical Field

[0001] This utility model relates to the field of adjustment technology for presses, specifically to a synchronous adjustment structure for a two-point press. Background Technology

[0002] A two-point press is a common type of stamping equipment. It uses the synchronous, counter-rotating rotation of two crankshafts to drive a slide block, thereby forming the workpiece. This type of equipment can maintain balanced force on the worktable even at high tonnage and is suitable for stamping large sheet metal parts.

[0003] Currently, most existing dual-point presses use a pair of externally meshing gears to drive two crankshafts to rotate in opposite directions. However, during machining and assembly, it is difficult to keep the keyway positions and angular offsets of the eccentric parts of the two crankshafts completely consistent. This can easily lead to angular phase deviations when the crankshafts rotate in opposite directions, thus affecting the synchronization and stability of the equipment and making it difficult to fully meet the actual functional requirements. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a synchronous adjustment structure for a dual-point press, comprising a frame, a driving large gear, a driven large gear assembly, crankshaft I and crankshaft II. The driven gear assembly includes a driven gear ring and a connecting sleeve. The driven gear ring is connected to the connecting sleeve by fastening bolts. The through hole of the fastening bolt is a slotted hole. A pin is provided for positioning between the driven gear ring and the connecting sleeve. An angular phase adjustment assembly is installed in the slot of the connecting sleeve. The angular phase adjustment assembly includes a fixing block, a flat-end set screw, and a closing nut. One end of the fixing block has an external thread and is screwed into the threaded hole of the connecting sleeve. The other end of the fixing block has a threaded hole. The flat-end set screw is screwed into the threaded hole and abuts against the driven gear ring. The closing nut is sleeved on the threaded section of the fixing block.

[0006] Preferably, the tail end of crankshaft one is connected to the driving gear by key one, and a pressure cover one is provided between the driving gear and crankshaft one. The tail end of crankshaft two is connected to the connecting sleeve by key two, and a pressure cover two is provided between the driven gear assembly and crankshaft two.

[0007] Preferably, a bearing seat 1 and a bearing seat 2 are provided on the frame. A copper bushing 1 is installed inside the bearing seat 1, and a copper bushing 2 is installed inside the bearing seat 2. The front end support of crankshaft 1 is fitted inside the copper bushing 1, and the front end support of crankshaft 2 is fitted inside the copper bushing 2.

[0008] Preferably, the rear ends of crankshaft one and crankshaft two are respectively supported and fitted into two copper bushings three, and the two copper bushings three are fixed in the frame.

[0009] Preferably, the fixing block is cylindrical, and its external thread section mates with the threaded hole of the connecting sleeve.

[0010] Preferably, the closed nut is fitted onto the threaded section of the fixed block.

[0011] Preferably, a washer is provided between the fastening bolt and the driven large gear assembly.

[0012] Compared with the prior art, this utility model uses a combination of driven gear ring, connecting sleeve and angular phase adjustment component to achieve precise adjustment and reliable locking of the relative position of driven gear ring. It can compensate for the small angular offset between the crankshaft eccentric part and the keyway, and ensure the reverse phase synchronization of the crankshaft during meshing transmission. This improves the forming accuracy of stamped parts and equipment stability, reduces abnormal load and component wear caused by phase deviation, reduces the defect rate and extends the life of transmission components. At the same time, the adjustment operation is simple, the locking is reliable, and it is convenient for on-site maintenance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the synchronous adjustment structure of the dual-point press of this utility model; Figure 2 This is a schematic diagram of the angular phase adjustment component in the synchronous adjustment structure of the dual-point press of this utility model; Figure 3 This is a schematic diagram of the active large gear and the moving large gear assembly in the synchronous adjustment structure of the dual-point press of this utility model. Figure 4 This is a schematic diagram of the internal structure of the driven large gear assembly in the synchronous adjustment structure of the dual-point press of this utility model.

[0014] In the picture: 1. Driving large gear; 21. Shaft seat one; 22. Shaft seat two; 31. Copper bushing one; 32. Copper bushing two; 33. Copper bushing three; 41. Crankshaft one; 42. Crankshaft two; 61. Key one; 62. Key two; 71. Pressure cap one; 72. Pressure cap two; 80. Driven large gear assembly; 81. Driven gear ring; 82. Connecting sleeve; 83. Fastening bolt; 84. Washer; 85. Pin; 90. Angular phase adjustment assembly; 91. Fixing block; 92. Flat end set screw; 93. Closed nut. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1 An embodiment of this utility model provides a synchronous adjustment structure for a dual-point press, including a frame, a driving gear 1, a driven gear assembly 80, a crankshaft 1 41, and a crankshaft 2 42.

[0017] like Figure 1 , Figure 2 and Figure 4 As shown, the driven gear assembly 80 includes a driven gear ring 81 and a connecting sleeve 82. The driven gear ring 81 is connected to the connecting sleeve 82 by a fastening bolt 83. The through hole of the fastening bolt 83 is a waist-shaped hole. A pin 85 is provided between the driven gear ring 81 and the connecting sleeve 82 for positioning.

[0018] An angular phase adjustment component 90 is installed in the slot of the connecting sleeve 82. The angular phase adjustment component 90 includes a fixing block 91, a flat-end set screw 92, and a closing nut 93. One end of the fixing block 91 is provided with an external thread and screwed into the threaded hole of the connecting sleeve 82. The other end of the fixing block 91 is provided with a threaded hole. The flat-end set screw 92 is screwed into the threaded hole and abuts against the driven gear ring 81. The closing nut 93 is sleeved on the threaded section of the fixing block 91.

[0019] According to the above technical solution, by forming a waist-shaped hole structure on the connecting sleeve 82, a slight relative angular displacement can be generated between the driven gear ring 81 and the connecting sleeve 82. After being positioned by the mating pin 85, the stability of the adjusted position can be maintained. Furthermore, through the pressing action of the flat-end set screw 92 in the angular phase adjustment assembly 90, the driven gear ring 81 can be offset relative to the connecting sleeve 82 within a small range, realizing the fine adjustment of the angle between the gear ring and crankshaft 42. This ensures that crankshaft 41 and crankshaft 42 maintain reverse synchronization during gear meshing transmission, resulting in more stable operation.

[0020] In one embodiment, such as Figure 3 As shown, the tail end of crankshaft 1 41 is connected to the driving gear 1 via key 1 61, and a pressure cover 1 71 is provided between the driving gear 1 and crankshaft 1 41. The tail end of crankshaft 2 42 is connected to the connecting sleeve 82 via key 2 62, and a pressure cover 2 72 is provided between the driven gear assembly 80 and crankshaft 2 42.

[0021] According to the above technical solution, the driving gear 1 and crankshaft 1 41, and the connecting sleeve 82 and crankshaft 2 42 are reliably fixed together by key 1 61 and key 2 62 respectively, which can prevent relative slippage when transmitting torque. The setting of pressure cover 1 71 and pressure cover 2 72 ensures that the gear and crankshaft maintain a stable coaxial fit relationship during rotation, ensuring accurate angle transmission during gear transmission, thereby improving the synchronization of crankshaft reverse rotation.

[0022] In one embodiment, specifically, a shaft seat 1 21 and a shaft seat 22 are provided on the frame. A copper bushing 1 31 is installed inside the shaft seat 1 21, and a copper bushing 2 32 is installed inside the shaft seat 22. The front end support of crankshaft 1 41 is fitted inside the copper bushing 1 31, and the front end support of crankshaft 2 42 is fitted inside the copper bushing 2 32.

[0023] According to the above technical solution, copper bushing 1 31 and copper bushing 2 32 provide radial support for the front end of crankshaft 1 41 and crankshaft 2 42, so that the crankshaft can maintain stable operation during high-speed rotation, reduce axial wobble and wear, and ensure the concentricity of the front end support, thereby enabling the two crankshafts to maintain a stable motion trajectory when the transmission meshes, and improve the overall transmission accuracy.

[0024] In one embodiment, specifically, the rear ends of crankshaft 1 41 and crankshaft 2 42 are respectively supported and fitted inside two copper bushings 33, and the two copper bushings 33 are fixed inside the frame.

[0025] According to the above technical solution, by arranging two copper bushings 33 in the frame, the rear ends of crankshaft 1 41 and crankshaft 2 42 are reliably supported, so that the crankshaft is stably fixed at both ends, and can withstand the loads generated by gear meshing and eccentric motion, thereby improving the balance of crankshaft operation and ensuring the meshing accuracy and life of gear transmission.

[0026] In one embodiment, the fixing block 91 is cylindrical, and its external thread section mates with the threaded hole of the connecting sleeve 82.

[0027] According to the above technical solution, the cylindrical design of the fixing block 91 facilitates stable engagement with the threaded hole of the connecting sleeve 82, enabling the angular phase adjustment component 90 to be firmly installed in the designated position. This ensures that the structure is not easily loosened when subjected to force, and guarantees that the force generated by the flat-end set screw 92 during screwing in or out can reliably act on the driven gear ring 81, thereby achieving controllable adjustment of angular displacement.

[0028] In one embodiment, specifically, the closed nut 93 is sleeved on the threaded section of the fixing block 91 and abuts against the end face of the fixing block 91.

[0029] According to the above technical solution, the nut 93 engages with the threaded section of the fixing block 91 through a tightening mechanism. After locking, it abuts against the end face of the fixing block 91, thereby limiting the axial position change of the flat-end set screw 92. This prevents the screw from loosening or shifting during equipment operation after adjustment, ensuring the stability and long-term reliability of the angular phase adjustment.

[0030] In one embodiment, a washer 84 is provided between the fastening bolt 83 and the driven large gear assembly 80.

[0031] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A synchronous adjustment structure for a dual-point press, characterized in that, It includes a frame, a drive gear (1), a driven gear assembly (80), crankshaft I (41) and crankshaft II (42). The driven gear assembly (80) includes a driven gear ring (81) and a connecting sleeve (82). The driven gear ring (81) is connected to the connecting sleeve (82) by a fastening bolt (83). The through hole of the fastening bolt (83) is a waist-shaped hole. A pin (85) is provided between the driven gear ring (81) and the connecting sleeve (82) for positioning. An angular phase adjustment component (90) is installed in the slot of the connecting sleeve (82). The angular phase adjustment component (90) includes a fixing block (91), a flat-end set screw (92), and a closing nut (93). One end of the fixing block (91) is provided with an external thread and screwed into the threaded hole of the connecting sleeve (82). The other end of the fixing block (91) is provided with a threaded hole. The flat-end set screw (92) is screwed into the threaded hole and abuts against the driven gear ring (81). The closing nut (93) is sleeved on the threaded section of the fixing block (91).

2. The synchronous adjustment structure of a dual-point press according to claim 1, characterized in that, The tail end of crankshaft I (41) is connected to the driving gear (1) via key I (61). A pressure cap I (71) is provided between the driving gear (1) and crankshaft I (41). The tail end of crankshaft II (42) is connected to the connecting sleeve (82) via key II (62). A pressure cap II (72) is provided between the driven gear assembly (80) and crankshaft II (42).

3. The synchronous adjustment structure of a dual-point press according to claim 1, characterized in that, The frame is provided with a bearing seat 1 (21) and a bearing seat 2 (22). The bearing seat 1 (21) contains a copper bushing 1 (31), and the bearing seat 2 (22) contains a copper bushing 2 (32). The front end support of the crankshaft 1 (41) is fitted inside the copper bushing 1 (31), and the front end support of the crankshaft 2 (42) is fitted inside the copper bushing 2 (32).

4. The synchronous adjustment structure of a dual-point press according to claim 3, characterized in that, The rear ends of crankshaft I (41) and crankshaft II (42) are respectively supported and fitted in two copper bushings III (33), which are fixed in the frame.

5. The synchronous adjustment structure of a dual-point press according to claim 1, characterized in that, The fixing block (91) is cylindrical, and its external thread section mates with the threaded hole of the connecting sleeve (82).

6. The synchronous adjustment structure of a dual-point press according to claim 1, characterized in that, The closed nut (93) is sleeved on the threaded section of the fixed block (91).

7. The synchronous adjustment structure of a dual-point press according to claim 1, characterized in that, A washer (84) is provided between the fastening bolt (83) and the driven gear assembly (80).

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