Camshaft die

Abstract

The utility model relates to the technical field of dies, in particular to a camshaft die which comprises an upper die body moving up and down and a lower die body located below the upper die body. A floating sliding block is elastically arranged above the lower die body; an ejector rod is arranged in the middle of the lower die body; the bottom of the lower die body is provided with a supporting platform used for adjusting the position angle of the ejector rod. When the upper die body is pressed downwards to make contact with the floating sliding block, the floating sliding block can be synchronously driven to move, so that the periphery of the cam shaft can be shaped through the floating sliding block while the cam shaft is subjected to axial pressure, and then the unheated part of the cam shaft can be shaped; and meanwhile, the supporting platform arranged at the bottom of the lower die body can be used for conveniently adjusting the rotating effect of the cam shaft in the pressing forming process, so that the forming uniformity of the heating part of the cam shaft is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a camshaft mold. Background Art

[0002] At present, the camshaft forming method is to locally heat a bar material, and use a flat forging machine to partially upset and form it three times, and then shot blast and polish the workpiece to remove surface defects after cooling, and then heat it again for final forging. In the process of processing the camshaft bar material, the following problems usually occur, see the publication number CN219335620U discloses a camshaft mold, which involves the field of mold technology. The utility model includes a lower die base and an upper die base; the top of the lower die base is provided with a circular groove and a lower shaft groove for die-casting of the camshaft, the lower shaft groove is arranged at the center position of the bottom wall of the circular groove, and the bottom of the upper die base is provided with an upper shaft groove for die-casting of the camshaft, and the upper shaft groove and the lower shaft groove are located on the same axis; an arc-shaped slide groove is provided on the edge of the inner wall of the bottom of the circular groove, and an arc-shaped slide plate is slidably connected inside the arc-shaped slide groove, and the top of the arc-shaped slide plate is slidably connected with the bottom of the upper die base; a demolding mechanism for demolding is provided in the arc-shaped slide plate. Although this patent ensures the normal die-casting of the camshaft and can achieve the effect of automatic demolding by the rise of the support ring, there is still a problem of uneven heating of the part during the molding process, which affects the application of the camshaft after molding. Therefore, in the long-term research and development testing process: the camshaft bar material in the prior art is difficult to ensure the uniformity of the heating part of the bar material during the molding process. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a camshaft mold to solve the problem that it is difficult to ensure the uniformity of the heated part of the camshaft bar during the forming process.

[0004] Based on the above-mentioned purpose, the utility model provides a camshaft mold, including: an upper mold body that moves up and down, an upper mold seat is detachably installed on the top of the outer periphery of the upper mold body, and a lower mold body is located below the upper mold body; an upper mold groove for positioning the camshaft is opened in the center of the bottom of the upper mold body, a floating slider is elastically arranged above the lower mold body, at least two groups of guide rods are arranged above the lower mold body, and the floating slider slides up and down on the periphery of the guide rod; a ejection rod is arranged in the middle of the lower mold body, and a ejection groove for positioning the camshaft is opened in the center of the top of the ejection rod; a lifting platform for adjusting the position angle of the ejection rod is arranged at the bottom of the lower mold body.

[0005] Preferably, a first buffer groove is opened on both sides of the upper middle part of the lower mold body, a threaded groove is opened in the center of the bottom of the first buffer groove, and a second buffer groove matched with the first buffer groove is opened on both sides of the lower middle part of the floating slider, and plug screws are rotatably installed on both sides of the middle of the floating slider, and through holes for the plug screws to pass through are opened near both ends of the upper mold base, the bottom end of the plug screw passes through the second buffer groove and is inserted into the first buffer groove, and the bottom end of the outer periphery of the plug screw is threadably matched with the threaded groove, a spring is sleeved on the outer periphery of the plug screw, and both ends of the spring are respectively fixedly installed in the first buffer groove and the second buffer groove, and the matching and separation of the plug screw and the threaded groove are adjusted to limit the position of the floating slider; a clamping groove of the environmental structure is opened near the bottom end of the outer periphery of the lower mold body.

[0006] Preferably, the lifting platform includes: a fixed seat, fixedly installed on the bottom end of the lower mold body, a groove for inserting the ejecting rod is opened in the upper middle part of the fixed seat, symmetrically arranged through holes are opened on both sides of the outer periphery of the fixed seat, and a toggle frame is fixedly installed on the bottom end of the ejecting rod, and both ends of the toggle frame pass through the through holes respectively and extend to the outer periphery of the fixed seat.

[0007] Preferably, the lifting platform includes: a mounting seat, fixedly mounted on the bottom end of the lower mold body, a mounting groove is opened in the middle part above the mounting seat, an annular pad is fixedly mounted on the bottom edge of the mounting groove, a guide groove is fixedly mounted above the annular pad, the bottom end of the ejecting rod is inserted into the mounting groove and a limit block is fixedly mounted therein, symmetrically arranged guide columns are fixedly mounted on both sides of the outer periphery of the limit block, the guide columns slide on the guide groove, an elastic part is fixedly mounted on the bottom end of the limit block, a turntable is fixedly mounted on the bottom end of the elastic part, and the lower part of the turntable is rotatably connected to the mounting groove.

[0008] Preferably, the guide groove has a closed wave-shaped structure.

[0009] Preferably, the upper mold base is used to drive the upper mold body to move up and down.

[0010] The beneficial effects of the utility model are as follows: by providing a floating slider on the lower mold body with the help of a guide rod, when the upper mold body is pressed down and contacts the floating slider, the floating slider can be synchronously driven to move, so that the camshaft can be subjected to axial pressure while also being able to be peripherally shaped by the floating slider, thereby being able to shape the unheated portion of the camshaft, so that the heated portion of the camshaft can be well press-formed, and at the same time, by providing a lifting platform at the bottom of the lower mold body, the rotation effect of the camshaft during the press-forming process can be conveniently adjusted, thereby further improving the uniformity of the forming of the heated portion of the camshaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 This is a schematic diagram of the assembly position structure of the upper mold body and the lower mold body of the utility model;

[0013] Figure 2 This is a schematic diagram of the cross-sectional structure of the fixing seat of the utility model;

[0014] Figure 3 This is a schematic diagram of the cross-sectional structure of the mounting seat of the utility model;

[0015] Figure 4 This is a schematic diagram of the guide groove structure of the utility model.

[0016] Markings in the figure are: 1. upper die seat; 11. upper die body; 12. upper die groove; 13. through hole; 2. lower die body; 21. first buffer groove; 22. threaded groove; 23. ejector rod; 24. ejector groove; 25. clamping groove; 3. guide rod; 4. floating slider; 41. second buffer groove; 42. plug screw; 43. spring; 5. fixed seat; 51. groove; 52. through hole; 53. toggle frame; 6. mounting seat; 61. mounting groove; 62. annular gasket; 63. guide groove; 64. limit block; 65. guide column; 66. elastic member; 67. turntable. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments. Example

[0018] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a camshaft mold comprises: an upper mold body 11 that moves up and down, an upper mold base 1 is detachably installed on the top of the outer periphery of the upper mold body 11, the upper mold base 1 is used to drive the upper mold body 11 to move up and down, and a lower mold body 2 located below the upper mold body 11, the camshaft is arranged between the upper mold body 11 and the lower mold body 2, the end of the camshaft close to the upper mold body 11 is upset, and the camshaft close to the lower mold body 2 is heated; an upper mold groove 12 for positioning the camshaft is opened in the center of the bottom of the upper mold body 11, and the camshaft can be positioned by the upper mold groove 12 One end of the shaft is positioned after being upset, and a floating slider 4 is elastically arranged above the lower mold body 2. The floating slider 4 is composed of two detachable protrusions. The floating slider 4 is sleeved on the periphery of the camshaft, and at least two groups of guide rods 3 are arranged above the lower mold body 2. The floating slider 4 slides up and down on the periphery of the guide rods 3; a ejector rod 23 is arranged in the middle of the lower mold body 2, and a ejector groove 24 for positioning the camshaft is opened in the center of the top of the ejector rod 23; a lifting platform for adjusting the position angle of the ejector rod 23 is arranged at the bottom of the lower mold body 2.

[0019] The camshaft is placed between the upper mold body 11 and the lower mold body 2, and the bottom of the camshaft is positioned by a ejector rod 23 provided in the lower mold body 2 and an ejector groove 24 provided on the top of the ejector rod 23, and an upper mold groove 12 is provided below the upper mold groove 12 to match the top of the camshaft, so that the camshaft can be further positioned during processing and forming, so that when the upper mold body 11 is driven to move up and down, the local length of the camshaft placed between the upper mold body 11 and the lower mold body 2 can be formed, and the lower mold body 11 can be used to form the camshaft. 2 is provided with a floating slider 4 by means of the guide rod 3. When the upper mold body 11 is pressed down and contacts the floating slider 4, the floating slider 4 can be synchronously driven to move, so that the camshaft can be subjected to axial pressure while being peripherally shaped by the floating slider 4, and then the unheated part of the camshaft can be shaped, so that the heated part of the camshaft can be well press-formed. The support platform provided at the bottom of the lower mold body 2 can conveniently adjust the rotation effect of the camshaft during the press-forming process, thereby further improving the uniformity of the forming of the heated part of the camshaft.

[0020] Furthermore, a first buffer groove 21 is provided on both sides of the upper middle part of the lower mold body 2, a threaded groove 22 is provided at the center of the bottom of the first buffer groove 21, and a second buffer groove 41 matched with the first buffer groove 21 is provided on both sides of the lower middle part of the floating slider 4, and plug screws 42 are rotatably installed on both sides of the middle part of the floating slider 4, and through holes 13 for the plug screws 42 to pass through are provided near both ends of the upper mold base 1, the bottom end of the plug screw 42 passes through the second buffer groove 41 and is inserted into the first buffer groove 21, and the bottom end of the outer periphery of the plug screw 42 is threadedly matched with the threaded groove 22, and a spring 43 is provided on the outer periphery of the plug screw 42, and the two ends of the spring 43 are respectively fixed in the first buffer groove 21 and the second buffer groove 41 by bolts, and the matching and separation of the plug screw 42 and the threaded groove 22 are adjusted to limit the position of the floating slider 4; a clamping groove 25 of an environmental structure is provided near the bottom end of the outer periphery of the lower mold body 2.

[0021] Among them, through the spring 43 provided in the first buffer groove 21 and the second buffer groove 41, the upper mold body 11 can push the floating slider 4 upward with the help of the spring 43 after rising, so that the floating slider 4 can be maintained on the unheated part of the camshaft, so as to facilitate the cyclic processing and forming effect of the heated part of the camshaft by means of the periodically moving upper mold body 11. When the heated part of the camshaft is formed, the floating slider 4 is removed from the camshaft, and the plug screw 42 is turned at the same time, so that the floating slider 4 can be position-limited, thereby facilitating the user to remove the formed camshaft. Example

[0022] The difference from the previous embodiment is that the lifting platform includes: a fixed seat 5, which is fixed to the bottom end of the lower mold body 2 by bolts, a groove 51 for inserting the ejecting rod 23 is opened in the middle of the upper part of the fixed seat 5, and symmetrically arranged through holes 52 are opened on both sides of the outer periphery of the fixed seat 5, and a toggle frame 53 is fixed to the bottom end of the ejecting rod 23 by bolts, and both ends of the toggle frame 53 pass through the through holes 52 respectively and extend to the outer periphery of the fixed seat 5.

[0023] Among them, the bottom end of the camshaft is positioned in the ejection groove 24, and the ejection rod 23 can be synchronously driven to rotate by toggling the toggling frame 53, so that the placement angle of the camshaft during the molding process can be adjusted. At the same time, the floating slider 4 can further improve the molding uniformity of the heated part of the camshaft. The through hole 52 provided on the fixed seat 5 can limit the swing range of the toggling frame 53, which is convenient for users to manually adjust. Example

[0024] The difference from the first embodiment is that the lifting platform comprises: a mounting seat 6, which is fixedly installed on the bottom end of the lower mold body 2 by bolts, a mounting groove 61 is opened in the middle part above the mounting seat 6, an annular pad 62 is fixedly installed on the bottom edge of the mounting groove 61 by bolts, a guide groove 63 is fixedly installed above the annular pad 62 by bolts, and the guide groove 63 is a closed wavy structure, the bottom end of the ejecting rod 23 is inserted into the mounting groove 61 and a limit block 64 is fixedly installed by bolts, symmetrically arranged guide columns 65 are fixedly installed on both sides of the outer periphery of the limit block 64 by bolts, and the guide columns 65 slide on the guide groove 63, an elastic member 66 is fixedly installed on the bottom end of the limit block 64 by bolts, a turntable 67 is fixedly installed on the bottom end of the elastic member 66 by bolts, and the bottom of the turntable 67 is rotatably connected to the mounting groove 61.

[0025] Among them, the bottom end of the camshaft is positioned in the ejection groove 24. When the upper mold body 11 presses down the camshaft, the ejection rod 23 can be synchronously driven to move. When the guide column 65 contacts the guide groove 63, the inclined surface of the guide groove 63 can cooperate with the turntable 67 and the elastic member 66 to slightly adjust the swing angle of the limit block 64, so that the limit block 64 after being pressed down can drive the ejection rod 23 and the camshaft to adjust the angle during the up and down movement, so that the effect of guiding the camshaft to implement a slight swing can be achieved without manual adjustment, thereby eliminating the manual adjustment operation steps and improving the efficiency of the camshaft heating part during the uniform processing and molding process.

[0026] Working principle: When in use, one end of the bar used for processing and forming the camshaft is upset, and a certain length of the bar is locally heated, and the heated bar is put in from the top of the floating slider 4, and the bar falls into the ejection groove 24 of the ejection rod 23 in the lower mold body 2. The upper mold base 1 drives the upper mold body 11 to start pressing down as a whole. When the upper mold body 11 contacts the floating slider 4, the spring 43 begins to be stressed, and the upper mold body 11 and the floating slider 4 are pressed down at the same time. Due to the action of the guide rod 3, it can be ensured that the entire pressing process will not be eccentric. The floating slider 4 plays a role in protecting the bar from deformation caused by the downward pressure during the entire forming process. The downward position is completed until the floating slider 4 and the lower mold body 2 are closed; the return action is that the upper mold base 1 drives the upper mold body 11 as a whole to return to the opening height of the equipment, and the floating slider 4 is returned by the elastic force of the spring 43. The plug screw 42 plays the role of fixing the floating slider 4 during ejection. When the workpiece is ejected, the manipulator or the employee takes out the formed product, so that the entire forming process is completed.

Claims

1. A camshaft mold, comprising: An upper mold body (11) that moves up and down, an upper mold base (1) that is detachably installed on the top of the outer periphery of the upper mold body (11), and a lower mold body (2) located below the upper mold body (11); characterized in that: an upper mold groove (12) for positioning a camshaft is opened in the center of the bottom of the upper mold body (11), a floating slider (4) is elastically arranged above the lower mold body (2), at least two groups of guide rods (3) are arranged above the lower mold body (2), and the floating slider (4) slides up and down on the outer periphery of the guide rod (3); a ejector rod (23) is arranged in the middle of the lower mold body (2), and a ejector groove (24) for positioning the camshaft is opened in the center of the top of the ejector rod (23); and a lifting platform for adjusting the position angle of the ejector rod (23) is arranged at the bottom of the lower mold body (2).

2. A camshaft mold according to claim 1, characterized in that: The lower mold body (2) is provided with a first buffer groove (21) on both sides of the upper middle part, and a thread groove (22) is provided at the center of the bottom of the first buffer groove (21). The floating slider (4) is provided with a second buffer groove (41) adapted to the first buffer groove (21) on both sides of the lower middle part. The floating slider (4) is rotatably provided with a plug screw (42) on both sides of the middle part. The upper mold base (1) is provided with a through hole (13) near both ends for the plug screw (42) to pass through. The bottom end of the plug screw (42) passes through the second buffer groove. The groove (41) is inserted into the first buffer groove (21), and the bottom end of the outer periphery of the plug screw (42) is threadedly matched with the thread groove (22), and a spring (43) is sleeved on the outer periphery of the plug screw (42), and the two ends of the spring (43) are respectively fixedly installed in the first buffer groove (21) and the second buffer groove (41), and the matching and separation of the plug screw (42) and the thread groove (22) are adjusted to limit the position of the floating slider (4); the outer periphery of the lower mold body (2) is provided with a clamping groove (25) of an environmental structure near the bottom.

3. A camshaft mold according to claim 1, characterized in that: The lifting platform comprises: a fixed seat (5) fixedly mounted on the bottom end of the lower mold body (2); a groove (51) for inserting a material ejecting rod (23) is provided in the middle of the upper part of the fixed seat (5); symmetrically arranged through holes (52) are provided on both sides of the periphery of the fixed seat (5); a shifting frame (53) is fixedly mounted on the bottom end of the material ejecting rod (23); and two ends of the shifting frame (53) respectively pass through the through holes (52) and extend to the periphery of the fixed seat (5).

4. A camshaft mold according to claim 1, characterized in that: The lifting platform comprises: a mounting seat (6) fixedly mounted on the bottom end of the lower mold body (2); a mounting groove (61) is provided in the middle of the upper part of the mounting seat (6); a ring-shaped pad (62) is fixedly mounted on the bottom edge of the mounting groove (61); a guide groove (63) is fixedly mounted above the ring-shaped pad (62); a limit block (64) is fixedly mounted in the mounting groove (61) at the bottom end of the ejecting rod (23); symmetrically arranged guide pillars (65) are fixedly mounted on both sides of the outer periphery of the limit block (64); the guide pillars (65) slide on the guide groove (63); an elastic member (66) is fixedly mounted on the bottom end of the limit block (64); a turntable (67) is fixedly mounted on the bottom end of the elastic member (66); and the bottom of the turntable (67) is rotatably connected to the mounting groove (61).

5. A camshaft mold according to claim 4, characterized in that: The guide groove (63) has a closed wave-shaped structure.

6. The camshaft mold according to claim 1, characterized in that: The upper die seat (1) is used to drive the upper die body (11) to move up and down.

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