Double-crankshaft press machine

Abstract

The utility model provides a double-crankshaft press machine which comprises a machine frame, a movable module and a fixed module are assembled on the machine frame, the movable module is connected with the machine frame through a double-crankshaft pressure mechanism, a table top is arranged on the machine frame, a sliding groove is formed in the table top, and the fixed module is assembled in the sliding groove. A plurality of positioning pins are assembled on the two sides of the sliding groove, and positioning holes matched with the positioning pins are formed in the fixed die set. And through cooperative use of the positioning pins and the positioning holes, the consistency and the stability of mold installation can be improved, and therefore the machining precision of products is guaranteed. The movable die set comprises a movable die and a mounting base, the mounting base is connected with the crankshaft through a connecting rod, and the movable die and the mounting base are assembled and fixed. By means of the design, the fixed die set and the driving die can be moved out of the working position together during maintenance or die replacement, maintenance and replacement are convenient, and the probability that the die collides with a rack during die moving is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of crankshaft press, specifically relates to a double crankshaft press. BACKGROUND

[0002] In modern manufacturing industry, the press is one of the important equipment for sheet metal forming, stamping and other processes. With the continuous improvement of production efficiency and product quality requirements, higher requirements are put forward for the design of the press. The press in the prior art usually adopts a fixed die assembly installation mode, that is, the movable die and the fixed die are fixedly installed on different parts of the machine. Although this fixed design can ensure certain processing stability, some problems are exposed in actual application process:

[0003] 1. Long installation time: the relative relationship between the movable die and the fixed die needs to be adjusted correctly every time the die is replaced. However, manual adjustment is difficult to complete at one time, and needs to be debugged repeatedly, resulting in long installation time.

[0004] 2. High collision risk: during the disassembly and reinstallation of the die, due to the lack of effective positioning and guiding device, the die is easy to collide with the rack or other parts. Such collision not only may cause damage to the die, but also may affect the normal operation of the equipment, increase the maintenance cost and downtime.

[0005] Therefore, based on the above some situations in the prior art, the present application is further designed and improved. CONTENT OF THE UTILITY MODEL

[0006] In order to solve the above technical problems, the utility model solves the problems through the following technical schemes.

[0007] A double crankshaft press, comprising a rack, the rack is assembled with a movable die assembly and a fixed die assembly, the movable die assembly is connected with the rack through a double crankshaft press mechanism, the rack is provided with a table top, the table top is provided with a sliding groove, and the fixed die assembly is assembled in the sliding groove. The sliding groove is assembled with a plurality of positioning pins on both sides, and the fixed die assembly is provided with positioning holes matched with the positioning pins. Through the cooperation of the positioning pins and the positioning holes, the consistency and stability of the die installation can be improved, so as to ensure the machining precision of the product. The movable die assembly comprises a movable die and a mounting seat, the mounting seat is connected with the crankshaft through a connecting rod, and the movable die is assembled and fixed with the mounting seat. This design can move the fixed die assembly together with the movable die from the working position when maintaining or replacing the die, which is convenient for maintenance and replacement, and reduces the probability of collision with the rack when moving the die.

[0008] As a preferred technical scheme of the double-crank press, the mounting seat is provided with a longitudinal assembly groove, the movable die is provided with a longitudinal assembly block corresponding to the longitudinal assembly groove, and the longitudinal assembly groove and the longitudinal assembly block are assembled and fixed through a longitudinal fixing pin. The longitudinal assembly groove, the assembly block and the fixing pin are used to strengthen the connection strength between the movable die and the mounting seat, increase the constraint in the transverse direction, and further ensure the safety and stability of the equipment during operation.

[0009] As a preferred technical scheme of the double-crank press, the mounting seat is provided with a longitudinal assembly groove, the movable die is provided with a longitudinal assembly block corresponding to the longitudinal assembly groove, and the longitudinal assembly groove and the longitudinal assembly block are assembled and fixed through a longitudinal fixing pin. The longitudinal assembly groove, the assembly block and the fixing pin are used to strengthen the connection strength between the movable die and the mounting seat, increase the constraint in the transverse direction, and further ensure the safety and stability of the equipment during operation.

[0010] As a preferred technical scheme of the double-crank press, the mounting seat is provided with a longitudinal assembly groove, the movable die is provided with a longitudinal assembly block corresponding to the longitudinal assembly groove, and the longitudinal assembly groove and the longitudinal assembly block are assembled and fixed through a longitudinal fixing pin. The longitudinal assembly groove, the assembly block and the fixing pin are used to strengthen the connection strength between the movable die and the mounting seat, increase the constraint in the transverse direction, and further ensure the safety and stability of the equipment during operation.

[0011] As a preferred technical scheme of the double-crank press, the mounting seat is provided with a longitudinal assembly groove, the movable die is provided with a longitudinal assembly block corresponding to the longitudinal assembly groove, and the longitudinal assembly groove and the longitudinal assembly block are assembled and fixed through a longitudinal fixing pin. The longitudinal assembly groove, the assembly block and the fixing pin are used to strengthen the connection strength between the movable die and the mounting seat, increase the constraint in the transverse direction, and further ensure the safety and stability of the equipment during operation.

[0012] Compared with the prior art, the application has the following beneficial effects: high disassembly and assembly efficiency, and avoidance of the problem that the mold is prone to collide with the rack during disassembly and assembly. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a perspective view of the double-crank press.

[0014] Fig. 2 It is an exploded view of the structure of the fixed die group, the movable die group and the table.

[0015] The following is a description of the markers in the drawings of the specification:

[0016] 10, rack; 11, sliding groove; 12, positioning pin; 13, main cleaning groove; 14, auxiliary cleaning groove;

[0017] 20, movable die group; 21, double-crank press; 22, movable die; 23, mounting seat; 24, longitudinal assembly groove; 25, longitudinal assembly block; 26, longitudinal fixing pin; 27, transverse assembly groove; 28, transverse assembly block; 29, transverse fixing pin;

[0018] 30, fixed die set; 31, positioning hole. DETAILED DESCRIPTION

[0019] The utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0020] In the following embodiments, the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout, and the embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model and cannot be understood as limiting the utility model.

[0021] In the description of the utility model, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, counterclockwise and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, therefore cannot be understood as limiting the utility model. In addition, the terms: first, second and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the shown technical features. In the description of the utility model, unless otherwise explicitly specified and limited, the terms: mounting, connecting, connecting and the like should be understood in a broad sense, and the person skilled in the art can understand the specific meaning of the above terms in the utility model according to the specific circumstances.

[0022] Referring to Figs. 1-2 A double-crank press machine, comprising a frame 10, a movable die set 20 and a fixed die set 30 are assembled on the frame 10, the movable die set 20 is connected with the frame 10 through a double-crank press mechanism 21, a table top is arranged on the frame 10, a sliding groove 11 is arranged on the table top, and the fixed die set 30 is assembled in the sliding groove 11. A plurality of positioning pins 12 are assembled on both sides of the sliding groove 11, and a positioning hole 31 matched with the positioning pin 12 is arranged on the fixed die set 30. Through the cooperation of the positioning pin 12 and the positioning hole 31, the consistency and stability of the die installation can be improved, so that the machining precision of the product is ensured. The movable die set 20 comprises a movable die 22 and a mounting seat 23, the mounting seat 23 is connected with the crank shaft through a connecting rod, and the movable die 22 is assembled and fixed with the mounting seat 23. This design can move the fixed die set 30 together with the movable die 22 from the working position when maintaining or replacing the die, which is convenient for maintenance and replacement, and reduces the probability of collision between the movable die 22 and the frame 10.

[0023] To ensure the assembly accuracy of the mounting seat 23 and the movable mold 22, the mounting seat 23 is provided with a longitudinal assembly groove 24, the movable mold 22 is provided with a longitudinal assembly block 25 corresponding to the longitudinal assembly groove 24, and the longitudinal assembly groove 24 and the longitudinal assembly block 25 are assembled and fixed by a longitudinal fixing pin 26. The use of the longitudinal assembly groove 24, the assembly block and the fixing pin strengthens the connection strength between the movable mold 22 and the mounting seat 23, increases the constraint in the transverse direction, and further ensures the safety and stability of the equipment during operation. The mounting seat 23 is provided with a transverse assembly groove 27, the movable mold 22 is provided with a transverse assembly block 28 corresponding to the transverse assembly groove 27, and the transverse assembly groove 27 and the transverse assembly block 28 are assembled and fixed by a transverse fixing pin 29. The constraint force in the longitudinal direction is increased, and under the joint action of the longitudinal assembly groove 24, the assembly accuracy of the overall structure is greatly improved, which plays an important role in improving product quality.

[0024] To ensure the smooth movement of the fixed mold group 30, a main cleaning groove 13 is arranged outside the sliding groove 11, and the width of the main cleaning groove 13 is smaller than the width of the sliding groove 11. This design is conducive to cleaning the waste or dust and other sundries generated during the cleaning process, keeping the inside of the sliding groove 11 clean, preventing foreign matter from being stuck to affect the normal operation of the sliding part, and prolonging the service life of the equipment. The two side walls of the sliding groove 11 near the inside are provided with a secondary cleaning groove 14. The design of the secondary cleaning groove 14 helps to further remove residual substances in the difficult-to-reach area, especially in the deep part of the sliding groove 11 which is not easy to clean, reducing the wear or other faults that may be caused by excessive accumulation of impurities.

[0025] To ensure that the fixed mold group 30 can smoothly slide in the sliding groove 11, while considering the wear problem during long-term use and the resistance to impurities, the bottom of the fixed mold group 30 (i.e. the part directly contacting the sliding groove 11) is treated by surface hardening technology such as carburizing, nitriding, etc. In this way, not only the surface hardness and wear resistance can be improved, but also the internal material can maintain good toughness. Alternatively, a special coating or plating layer can be applied to the bottom of the fixed mold group 30, such as a PTFE (polytetrafluoroethylene) coating. This material has extremely low friction coefficient and excellent corrosion resistance, which can effectively reduce the friction generated during sliding and prevent chemical erosion. In addition, a more wear-resistant metal alloy material is selected for the surface of the sliding groove 11, or the surface hardness is increased by heat treatment, etc., to prolong the service life. Through the above treatment of the surface of the fixed mold group 30 and the sliding groove 11, not only the overall performance and reliability of the equipment can be significantly improved, but also the service life can be greatly prolonged, and the maintenance cost can be reduced.

[0026] The protection scope of the utility model includes but is not limited to the above implementation manners, the protection scope of the utility model is subject to the claims, and any replacement, deformation, improvement of the technical personnel in the art for the present technology that is easily thought of falls into the protection scope of the utility model.

Claims

1. A double-crank press comprising a frame (10) to which a movable die set (20) and a fixed die set (30) are attached, the movable die set (20) being connected to the frame (10) by a double-crank press mechanism (21), characterized in that, The rack (10) is provided with a table top, the table top is provided with a sliding slot (11), the fixed mold group (30) is assembled in the sliding slot (11); the two sides of the sliding slot (11) are provided with a plurality of positioning pins (12), the fixed mold group (30) is provided with a positioning hole (31) matched with the positioning pin (12); the movable mold group (20) comprises a movable mold (22) and a mounting seat (23), the mounting seat (23) is connected with the crankshaft through a connecting rod, and the movable mold (22) is assembled and fixed with the mounting seat (23).

2. A double curved shaft press according to claim 1, characterized in that The mounting seat (23) is provided with a longitudinal assembly groove (24), the movable mold (22) is provided with a longitudinal assembly block (25) corresponding to the longitudinal assembly groove (24), and the longitudinal assembly groove (24) and the longitudinal assembly block (25) are assembled and fixed through a longitudinal fixing pin (26).

3. A double curved shaft press according to claim 2, characterized in that The mounting seat (23) is provided with a transverse assembly groove (27), the movable mold (22) is provided with a transverse assembly block (28) corresponding to the transverse assembly groove (27), and the transverse assembly groove (27) and the transverse assembly block (28) are assembled and fixed through a transverse fixing pin (29).

4. A double curved shaft press according to claim 1, characterized in that The outer side of the sliding slot (11) is provided with a main cleaning groove (13), and the width of the main cleaning groove (13) is smaller than the width of the sliding slot (11).

5. A double curved shaft press according to claim 1, characterized in that, The two side walls of the sliding slot (11) close to the inner side are provided with a secondary cleaning groove (14).

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