Press fitting device for press fitting of valve guide pipe

Abstract

The utility model discloses a press fitting device used for press fitting of a valve guide pipe, the press fitting device used for press fitting of the valve guide pipe comprises a press fitting mechanism arranged on a machine frame, the press fitting mechanism comprises a press fitting power piece which is vertically arranged, the fixed end of the press fitting power piece is installed on the machine frame, and the action end of the press fitting power piece is fixedly connected with a pressing head seat. Four pressing heads are arranged on the pressing head seat, and four screw screws are arranged on each pressing head in the circumferential direction. By using the press-fitting device for press-fitting the valve guide pipe, the press-fitting efficiency can be improved, the labor intensity of operators can be reduced, the production cost can be reduced, and the economic benefits of enterprises can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of engine cylinder head production equipment, and in particular relates to a press-fitting device for press-fitting a valve guide. Background Art

[0002] When assembling the cylinder head of the engine, the valve guide needs to be installed on the cylinder head of the engine. At present, the valve guide is taken manually, the cylinder head is moved manually, and then the valve guide is pressed on the cylinder head by a manual operation head. This installation method has a high labor intensity for the operator, low installation efficiency, high production cost, and low economic benefits for the enterprise. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a press-fitting device for press-fitting a valve guide tube, which can improve the press-fitting efficiency, reduce the labor intensity of the operator, reduce the production cost, and improve the economic benefits of the enterprise.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] A press-fitting device for press-fitting a valve guide, the press-fitting device comprising a press-fitting mechanism arranged on a frame, the press-fitting mechanism comprising a vertically arranged press-fitting power member, the fixed end of the press-fitting power member is installed on the frame, the action end of the press-fitting power member is fixedly connected to a press head seat, four press heads are arranged on the press head seat, and four ball screws are arranged on each of the press heads along the circumferential direction.

[0006] Furthermore, the press-fitting mechanism also includes a main shaft, one end of which is fixedly connected to the action end of the press-fitting power component, and the other end of which is fixedly connected to the press head seat.

[0007] Furthermore, the pressure head has an inner cavity, the opening of the inner cavity is on the lower surface of the pressure head, and a positioning core shaft is also arranged in the inner cavity.

[0008] Furthermore, the press-fitting device also includes a pressing mechanism for pressing and positioning the cylinder head, and the pressing mechanism is located below the press-fitting mechanism.

[0009] Furthermore, the holding mechanism includes a mounting base arranged on the frame, and the mounting base includes a horizontally arranged top plate; a support plate lifting power member is vertically arranged on the mounting base, and a lifting plate is fixedly arranged on the action end of the support plate lifting power member, and the lifting plate is located below the top plate, and the lifting plate is fixedly connected to a support plate, and the support plate is located above the top plate, and the support plate is used to support the cylinder head; a pressure plate assembly is also arranged on the upper surface of the top plate, and the pressure plate assembly is arranged on one side of the support plate.

[0010] Furthermore, the pressure plate assembly includes a pressure plate power member and a pressure plate. When pressing the cylinder head, the pressure plate is pressed onto the upper surface of the cylinder head under the action of the pressure plate power member.

[0011] Furthermore, the pressure plate assembly also includes two oppositely arranged vertical plates, namely vertical plate one and vertical plate two, the pressure plate is arranged between the vertical plate one and the vertical plate two, the pressure plate is rotatably connected to the action end of the pressure plate power member, and at the same time, the pressure plate is rotatably connected to the upper ends of the vertical plate one and the vertical plate two; the lower ends of the vertical plate one and the vertical plate two are rotatably connected to the fixed end of the pressure plate power member.

[0012] Furthermore, the support plate is provided with a through hole, the top plate is provided with a positioning block, and the positioning block is arranged in the through hole area.

[0013] Furthermore, two guide support strip plates are arranged in parallel on the upper surface of the support plate, the two guide support strip plates are respectively located on both sides of the positioning block, and guide support parts are arranged on both guide support strip plates, and the two guide support parts are arranged opposite to each other.

[0014] Furthermore, the pressing device is applied to a valve guide pressing machine, which is provided with a loading station, and a loading and conveying mechanism for loading the cylinder head is provided on the frame; a pressing station is provided downstream of the loading station, and the pressing device is provided at the pressing station; a transporting device for transporting the cylinder head from the loading station to the pressing station is also provided on the frame; the valve guide pressing machine also includes a valve guide loading device, and the valve guide loading device is used to transport the valve guide to the pressing station; a unloading station is provided downstream of the pressing station, and the unloading station is provided with a unloading and conveying mechanism; after the valve guide is pressed onto the cylinder head, the transporting device transports the cylinder head to the unloading and conveying mechanism.

[0015] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0016] The press-fitting device for press-fitting the valve guide comprises a press-fitting mechanism arranged on a frame, the press-fitting mechanism comprises a vertically arranged press-fitting power piece, the fixed end of the press-fitting power piece is installed on the frame, the action end of the press-fitting power piece is fixedly connected to a press head seat, four press heads are arranged on the press head seat, and four ball screws are arranged on the upper circumferential direction of each press head. The press-fitting device for press-fitting the valve guide of the utility model can improve the press-fitting efficiency, reduce the labor intensity of the operator, reduce the production cost, and improve the economic benefits of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a three-dimensional diagram of a press-fitting device for press-fitting a valve guide of the utility model;

[0018] Figure 2 yes Figure 1 A three-dimensional diagram of the middle pressure installation mechanism;

[0019] Figure 3 yes Figure 1 Structural diagram of the medium pressure installation mechanism;

[0020] Figure 4 yes Figure 3 A partial enlarged view of the middle A area;

[0021] Figure 5 yes Figure 1 A three-dimensional diagram of the medium pressure holding mechanism;

[0022] Figure 6 yes Figure 1 Structural diagram of the medium pressure holding mechanism;

[0023] Figure 7 yes Figure 6 A top view of

[0024] Figure 8 yes Figure 5 A perspective view of the medium pressure plate assembly;

[0025] Fig. 9 It is a three-dimensional diagram of a valve guide press machine using the press-fitting device for press-fitting a valve guide of the utility model;

[0026] In the figure, 1, cylinder head; 2, frame; 3, holding mechanism; 31, support plate lifting power member; 32, mounting seat; 321, top plate; 33, lifting plate; 34, support plate; 351, guide support strip plate 1; 352, guide support strip plate 2; 361, positioning pin 1; 362, positioning pin 2; 37, pressure plate power member; 38, vertical stop pin; 39, vertical stop pin power member; 310, positioning Block; 311, pressing plate; 312, vertical plate one; 313, vertical plate two; 4, pressing mechanism; 41, pressing power part; 42, main shaft; 43, pressing head seat; 44, pressing head; 45, positioning mandrel; 46, ball screw; 5, valve guide; 6, feeding mechanism; 7, loading mechanism; 8, handling device; 9, dividing mechanism; 10, loading and conveying mechanism; 11, unloading and conveying mechanism; 12, main nylon tube. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0028] Combination Fig. 9 As shown, the press-fitting device for press-fitting a valve guide of the utility model is applied to a valve guide press-fitting machine, and the valve guide press-fitting machine includes a frame 2 .

[0029] A loading station is provided on the valve guide press, and at the loading station, a loading and conveying mechanism 10 for loading the cylinder head 1 is provided on the frame 2; the loading and conveying mechanism 10 is a conventional conveying mechanism capable of conveying the cylinder head 1, and its specific structure and conveying process are common knowledge to those skilled in the art, and will not be repeated here.

[0030] A press-fitting station is arranged downstream of the loading station. A press-fitting device for press-fitting the valve guide 5 to the cylinder head 1 is also arranged on the frame 2 at the press-fitting station.

[0031] A transport device 8 for transporting the cylinder head 1 from the loading station to the pressing station is also provided on the frame 2 .

[0032] The valve guide press machine also includes a valve guide feeding device, which is used to feed the valve guide 5 to the press station. The valve guide feeding device can be a conventional feeding device in the prior art, and its working process and working principle are common knowledge to those skilled in the art, and will not be described here. Alternatively, the valve guide is directly picked up manually.

[0033] A material unloading station is provided downstream of the press-fitting station, and a material unloading conveying mechanism 11 is provided at the material unloading station; after the valve guide 5 is press-fitted to the cylinder head 1, the handling device 8 carries the cylinder head 1 to the material unloading conveying mechanism 11. The material unloading conveying mechanism 11 conveys the cylinder head 1 with the valve guide 5 off the production line. The material unloading conveying mechanism 11 is a conventional conveying mechanism capable of conveying the cylinder head 1, and its specific structure and conveying process are common knowledge to those skilled in the art, and will not be described in detail here.

[0034] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 ,as well as Fig. 9As shown in the figure, the pressing device includes a pressing mechanism 4, which includes a vertically arranged pressing power member 41. The pressing power member 41 preferably uses an oil cylinder. Of course, the pressing power member 41 can also choose to use a conventional power member that can provide power, such as an electric cylinder or a pneumatic cylinder, which will not be described in detail here. The upper end of the pressing power member 41 is a fixed end, and the lower end of the pressing power member 41 is an action end. The fixed end of the pressing power member 41 is installed on the frame 2. The action end of the pressing power member 41 is fixedly connected to one end of the main shaft 42, and the other end of the main shaft 42 is fixedly connected to a pressure head seat 43. Four pressure heads 44 are arranged on the pressure head seat 43, and four ball screws 46 are arranged on each pressure head 44 along the circumferential direction. When a valve guide 5 is placed on the pressure head 44, the four ball screws 46 press the valve guide 5 from the side of the valve guide 5 to prevent the valve guide 5 from falling. The ball screw 46 is a purchased part. The function and working process of the ball screw 46 are common knowledge to those skilled in the art and will not be described in detail here.

[0035] Preferably, the pressing head 44 has an inner cavity, the opening of which is on the lower surface of the pressing head 44 , and a positioning mandrel 45 is also provided in the inner cavity. When the valve guide 5 is transferred from the valve guide feeding device to the pressing head 44 , the positioning mandrel 45 guides the valve guide 5 , so that the valve guide 5 can be transferred smoothly.

[0036] Combination Figure 1 , Figure 5 , Figure 6 , Figure 7 , Figure 8 ,as well as Fig. 9 As shown together, preferably, the press-fitting device further comprises a press-fitting mechanism 3 for pressing and positioning the cylinder head 1, and the press-fitting mechanism 3 is located below the press-fitting mechanism 4. The press-fitting mechanism 3 comprises a mounting seat 32 fixedly arranged on the frame 2, and the mounting seat 32 comprises a horizontally arranged top plate 321. A support plate lifting power member 31 is vertically arranged on the mounting seat 32, and the support plate lifting power member 31 is preferably a cylinder. Of course, the support plate lifting power member 31 can also choose to use a conventional power member capable of providing power, such as an electric cylinder and an oil cylinder.

[0037] The lower end of the support plate lifting power member 31 is a fixed end, and the fixed end of the support plate lifting power member 31 is fixedly installed on the mounting seat 32. The upper end of the support plate lifting power member 31 is an action end. The action end of the support plate lifting power member 31 is fixedly provided with a lifting plate 33, and the lifting plate 33 is located below the top plate 321. The lifting plate 33 is fixedly connected to a support plate 34, and the support plate 34 is located above the top plate 321. The support plate 34 is used to support the cylinder head 1; the lifting plate 33 and the support plate 34 move reciprocatingly up and down under the action of the support plate lifting power member 31.

[0038] Preferably, a pressure plate assembly is also provided on the upper surface of the top plate 321, and the pressure plate assembly is arranged on one side of the support plate 34. The pressure plate assembly includes a pressure plate power member 37 and a pressure plate 311. The pressure plate power member 37 is arranged vertically, and the lower end of the pressure plate power member 37 is a fixed end, and the fixed end of the pressure plate power member 37 is fixedly connected to the upper surface of the top plate 321. The upper end of the pressure plate power member 37 is an action end, and the pressure plate 311 is rotatably connected to the action end of the pressure plate power member 37. When pressing the cylinder head 1, the pressure plate 311 is pressed on the upper surface of the cylinder head 1 under the action of the pressure plate power member 37; the pressure plate power member 37 preferably uses a cylinder. Of course, the pressure plate power member 37 can also choose to use conventional power members that can provide power, such as electric cylinders and oil cylinders, which will not be repeated here.

[0039] Further preferably, the pressure plate assembly also includes two oppositely arranged vertical plates, namely vertical plate one 312 and vertical plate two 313, and the pressure plate 311 is arranged between vertical plate one 312 and vertical plate two 313. The pressure plate 311 is rotatably connected to the action end of the pressure plate power member 37. At the same time, the pressure plate 311 is rotatably connected to the upper ends of vertical plate one 312 and vertical plate two 313; the lower ends of vertical plate one 312 and vertical plate two 313 are rotatably connected to the fixed end of the pressure plate power member 37.

[0040] Preferably, a through hole is provided on the support plate 34, and a positioning block 310 is fixedly provided on the top plate 321, and the positioning block 310 is provided in the through hole area. A positioning pin is provided on the upper surface of the positioning block 310, and a positioning hole is correspondingly provided on the lower surface of the cylinder head 1, and preferably two positioning pins are provided, namely, positioning pin 1 361 and positioning pin 2 362.

[0041] Preferably, two guide support strip plates are arranged in parallel on the upper surface of the support plate 34 , namely guide support strip plate 1 351 and guide support strip plate 2 352 , and guide support strip plate 1 351 and guide support strip plate 2 352 are respectively located on both sides of the positioning block 310 .

[0042] Further preferably, a strip plate one guiding support portion is provided on the guiding support strip plate one 351 , a strip plate two guiding support portion is provided on the guiding support strip plate two 352 , and the strip plate one guiding support portion and the strip plate two guiding support portion are arranged opposite to each other.

[0043] Located on the side of the incoming material, a vertical stop pin power member 39 is also provided on the mounting seat 32. The vertical stop pin power member 39 is vertically arranged, the lower end of the vertical stop pin power member 39 is a fixed end, the fixed end of the vertical stop pin power member 39 is fixedly installed on the mounting seat 32, and the upper end of the vertical stop pin power member 39 is an action end, and the action end of the vertical stop pin power member 39 is fixedly connected with a vertical stop pin 38. The vertical stop pin power member 39 is preferably a cylinder. Of course, the vertical stop pin power member 39 can also choose to use other conventional power members that can provide power, such as electric cylinders and oil cylinders, which will not be repeated here.

[0044] The following is a detailed description of the process of using the valve guide press-fitting machine of the present invention to press-fit the valve guide 5 onto the cylinder head 1:

[0045] The feeding mechanism 6 of the valve guide feeding device supplies the valve guide 5 to the distributing mechanism 9 through the main nylon tube 12. The valve guide coming out of the distributing mechanism enters the feeding mechanism 7 through two branch nylon tubes. The feeding mechanism 7 feeds the valve guide onto the pressing head 44 of the pressing mechanism 4.

[0046] The operator carries the cylinder head 1 to be assembled with the valve guide 5 to the loading and conveying mechanism 10 .

[0047] The transport device 8 transports the cylinder head to the pressing station, the action end of the support plate lifting power piece 31 of the pressing mechanism 3 extends out, the support plate 34 moves up, and the lower surface of the cylinder head 1 contacts the guide support parts of the guide support strip plate 1 351 and the guide support strip plate 2 352. The transport device 8 places the cylinder head 1 on the guide support parts of the guide support strip plate 1 351 and the guide support strip plate 2 352. Then, the action end of the support plate lifting power piece 31 is retracted, and the support plate 34 descends. After the support plate 34 descends to contact the upper surface of the top plate 321, the support plate lifting power piece 31 stops working. Since the height of the guide support parts of the guide support strip plate 1 351 and the guide support strip plate 2 352 is less than the height of the upper surface of the positioning block 310 at this time, the cylinder head 1 is placed on the positioning block 310 and is positioned using the positioning pin 1 361 and the positioning pin 2 362.

[0048] After the cylinder head 1 is placed on the positioning block 310, the action end of the pressing plate power member 37 of the pressing plate assembly extends out, and the free end of the pressing plate 311 turns down and presses on the upper surface of the cylinder head 1. Then, the action end of the pressing power member 41 of the pressing mechanism 4 extends out, and the four pressing heads 44 move down to press the four valve guides 5 on the cylinder head 1. After the pressing is completed, the action end of the pressing power member 41 is retracted, and the four pressing heads 44 move up. The action end of the pressing plate power member 37 is retracted, and the free end of the pressing plate 311 turns up and leaves the upper surface of the cylinder head 1 until it leaves the top of the cylinder head 1. The action end of the support plate lifting power member 31 extends out, and the support plate 34 moves up together with the cylinder head 1. After moving up to the right position, the cylinder head 1 is separated from the positioning pin 1 361 and the positioning pin 2 362. The transport device 8 transports the cylinder head 1 to the unloading conveying mechanism 11 and places the cylinder head 1 on the unloading conveying mechanism 11.

[0049] The technical features named with serial numbers involved in this specification (such as guide support strip plate 1, guide support strip plate 2, positioning pin 1, positioning pin 2, vertical plate 1, vertical plate 2, etc.) are only for distinguishing the various technical features and do not represent the positional relationship, installation sequence and working sequence between the various technical features.

[0050] In the description of this specification, it is necessary to understand that the orientations or positional relationships described as "upper end", "lower end", "top plate", "vertical stop pin", "vertical stop pin power member", "vertical plate one", "vertical plate two", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0051] Although the specific implementation methods of the utility model are described above, those skilled in the art should understand that the described embodiments are only part of the implementation methods of the utility model, rather than all the implementation methods, which are only examples, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementation methods without departing from the principle and essence of the utility model and without any creative work, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A press-fitting device for press-fitting a valve guide, characterized in that: The press-fitting device includes a press-fitting mechanism arranged on a frame, the press-fitting mechanism includes a vertically arranged press-fitting power part, the fixed end of the press-fitting power part is installed on the frame, the action end of the press-fitting power part is fixedly connected to a press head seat, four press heads are arranged on the press head seat, and four ball screws are arranged on each of the press heads along the circumferential direction.

2. The press-fitting device for press-fitting a valve guide according to claim 1, characterized in that: The press-fitting mechanism further comprises a main shaft, one end of which is fixedly connected to the action end of the press-fitting power member, and the other end of which is fixedly connected to the press head seat.

3. The press-fitting device for press-fitting a valve guide according to claim 1, characterized in that: The pressure head has an inner cavity, the opening of the inner cavity is on the lower surface of the pressure head, and a positioning core shaft is also arranged in the inner cavity.

4. The press-fitting device for press-fitting a valve guide according to claim 1, characterized in that: The press-fitting device also includes a pressing mechanism for pressing and positioning the cylinder cover, and the pressing mechanism is located below the press-fitting mechanism.

5. The press-fitting device for press-fitting a valve guide according to claim 4, characterized in that: The holding mechanism includes a mounting seat arranged on the frame, and the mounting seat includes a horizontally arranged top plate; a support plate lifting power member is vertically arranged on the mounting seat, and a lifting plate is fixedly arranged on the action end of the support plate lifting power member, and the lifting plate is located below the top plate, and the lifting plate is fixedly connected to a support plate, and the support plate is located above the top plate, and the support plate is used to support the cylinder head; a pressure plate assembly is also arranged on the upper surface of the top plate, and the pressure plate assembly is arranged on one side of the support plate.

6. The press-fitting device for press-fitting a valve guide according to claim 5, characterized in that: The pressure plate assembly comprises a pressure plate power member and a pressure plate. When pressing the cylinder head, the pressure plate is pressed onto the upper surface of the cylinder head under the action of the pressure plate power member.

7. The press-fitting device for press-fitting a valve guide according to claim 6, characterized in that: The pressure plate assembly also includes two oppositely arranged vertical plates, namely vertical plate one and vertical plate two. The pressure plate is arranged between the vertical plate one and the vertical plate two. The pressure plate is rotatably connected to the action end of the pressure plate power member. At the same time, the pressure plate is rotatably connected to the upper ends of the vertical plate one and the vertical plate two; the lower ends of the vertical plate one and the vertical plate two are rotatably connected to the fixed end of the pressure plate power member.

8. The press-fitting device for press-fitting a valve guide according to claim 7, characterized in that: The support plate is provided with a through hole, the top plate is provided with a positioning block, and the positioning block is arranged in the through hole area.

9. The press-fitting device for press-fitting a valve guide according to claim 8, characterized in that: Two guide support strip plates are arranged in parallel on the upper surface of the support plate, and the two guide support strip plates are respectively located on both sides of the positioning block. Guide support parts are arranged on both guide support strip plates, and the two guide support parts are arranged opposite to each other.

10. The press-fitting device for press-fitting a valve guide according to any one of claims 1 to 9, characterized in that: The press-fitting device is applied to a valve guide press-fitting machine, the valve guide press-fitting machine is provided with a loading station, and a loading and conveying mechanism for loading cylinder heads is provided on the machine frame; A press-fitting station is arranged downstream of the feeding station, and the press-fitting device is arranged at the press-fitting station; The frame is also provided with a transport device for transporting the cylinder head from the loading station to the pressing station; The valve guide press machine further comprises a valve guide feeding device, which is used to transport the valve guide to the press station; A material unloading station is arranged downstream of the press-fitting station, and the material unloading station is provided with a material unloading conveying mechanism; after the valve guide is press-fitted to the cylinder head, the transport device transports the cylinder head to the material unloading conveying mechanism.

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