High-end bicycle chain outer chain plate integrated forming die

Abstract

An integral forming die for an outer chain plate of a high-end bicycle chain relates to the technical field of chain manufacturing and comprises an upper die and a lower die, and the upper die is sequentially connected with an upper die holder, a fixing plate and a guide plate from top to bottom; the lower die is sequentially connected with a lower die base, a discharging plate and a female die plate from bottom to top. A pre-punching station, an outer chain plate waist shape cutting station, a waist chamfering station, an outer chain plate head shape cutting station, a waist thinning station, a head chamfering station, a fine punching station, a bottom hole punching station, a blanking and blowing station and a waste cutting station are sequentially arranged between the upper die and the lower die in the advancing direction of strip steel. The production efficiency of the outer chain plate of the high-end bicycle chain can be greatly improved, the flatness of the outer chain plate is further improved in the mode of cutting the outer chain plate for multiple times and blowing air upwards for discharging, and then the quality of the outer chain plate is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the chain manufacturing technical field, and in particular to a high-end bicycle chain outer chain plate integrated forming die. BACKGROUND

[0002] Chain is a kind of transmission device composed of metal chain rings or rings, mainly used for mechanical transmission and traction. Chain is composed of rigid components, which is part of the flexible system, and is widely used in various mechanical basic parts.

[0003] Bicycle chain is a key component connecting the pedals and rear wheel, through the transmission of the chain, the power of the rider can drive the bicycle forward. The material of the chain is usually made of steel, which has certain strength and wear resistance. With the development of science and technology, some high-end bicycle chains also use more advanced and lightweight materials such as stainless steel and titanium alloy to improve the durability and transmission efficiency of the chain.

[0004] The outer chain plate is the main component of the bicycle chain, and the high-end bicycle chain outer chain plate needs good appearance and high quality. The production efficiency of the existing die is low, and the flatness deviation of the outer chain plate is large, so it is necessary to improve. CONTENT OF THE INVENTION

[0005] The present application discloses a high-end bicycle chain outer chain plate integrated forming die, which aims to overcome the shortcomings of the prior art. Through the improvement of the die, the present application can realize the efficient production of high-end bicycle outer chain plate and ensure the quality of the outer chain plate.

[0006] In order to achieve the above purpose, the technical scheme of the present application is as follows:

[0007] A high-end bicycle chain outer chain plate integrated forming die, comprising an upper die and a lower die, the upper die is sequentially connected with an upper die seat, a fixed plate and a guide plate from top to bottom; the lower die is sequentially connected with a lower die seat, a stripper plate and a concave die plate from bottom to top; the upper die and the lower die are sequentially provided with a pre-punching station, a chain plate waist shape cutting station, a waist chamfering station, a chain plate head shape cutting station, a waist thinning station, a head chamfering station, a fine punching station, a bottom hole punching station, a blanking and blowing station and a waste cutting station according to the running direction of the strip steel.

[0008] Preferably, the pre-punching station comprises a rough punching concave die provided on the concave die plate, and a rough punching punch provided on the upper die opposite to the rough punching concave die, the top of the rough punching punch is connected with the fixed plate, and the bottom penetrates through the guide plate.

[0009] Preferably, the waist portion cutting punch die on the die plate is provided with a waist portion cutting punch above, the upper end of the waist portion cutting punch is connected with the fixed plate, and the lower end penetrates through the guide plate.

[0010] Preferably, the waist portion chamfering station comprises a waist portion chamfering die provided on the die plate, a waist portion chamfering punch provided above the upper die where the waist portion chamfering die is located, the upper end of the waist portion chamfering punch is connected with the fixed plate, and the lower end penetrates through the guide plate.

[0011] Preferably, the head portion cutting station comprises a secondary cutting punch provided on the upper die, the upper end of the secondary cutting punch is connected with the fixed plate, and the lower end penetrates through the guide plate, and the die plate opposite to the secondary cutting punch is provided with a secondary cutting die.

[0012] Preferably, the waist portion thinning station comprises a waist portion thinning punch provided on the upper die, and the die plate opposite to the waist portion thinning punch is provided with a waist portion thinning punch die.

[0013] Preferably, the head portion chamfering station comprises a front head portion chamfering punch A and a front head portion chamfering punch B provided on the upper die, and the die plate opposite to the front head portion chamfering punch A and the front head portion chamfering punch B is provided with a front head portion chamfering die.

[0014] Preferably, the fine punching station comprises a fine punching die provided on the die plate, and a fine punching punch provided on the upper die opposite to the fine punching die, the upper end of the fine punching punch is connected with the fixed plate, and the lower end penetrates through the fine punching punch guide insert provided on the guide plate in advance.

[0015] Preferably, the blanking and blowing station comprises a waist portion waste material cutting die provided on the die plate, and a waist portion waste material cutting punch installed on the upper die where the waist portion waste material cutting die is located, further comprising a lower die waste material cutting die provided on the die plate on the front side of the waist portion waste material cutting die, a material cutting cutter insert is installed at the upper die opposite to the lower die waste material cutting die, and a blowing rod is provided on the edge of the lower die waste material cutting die in the longitudinal direction.

[0016] The high-end bicycle chain outer chain plate integrated forming die has the following beneficial effects:

[0017] The high-end bicycle chain outer chain plate integrated forming die can greatly improve the production efficiency of the high-end bicycle chain outer chain plate, and the stamping speed can reach 150 times per minute through the improvement of the die, and the number of stamping can reach 4 through the improved layout mode, which is doubled compared with the existing die; meanwhile, the flatness of the outer chain plate is further improved through the multiple cutting and upward blowing of the outer chain plate, thereby ensuring the quality of the outer chain plate. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the present application, the drawings used in the embodiments required below are briefly introduced, and constitute a part of the specification, together with the embodiments of the present application, for explaining the present application, and do not constitute a limitation on the present application.

[0019] Figure 1 The overall cross-sectional structure schematic diagram of the present application;

[0020] Figure 2 The discharging of the present application Figure 1 ;

[0021] Figure 3 The discharging of the present application Figure 2 .

[0022] 01, pre-punching station; 02, cutting outer chain plate waist shape station; 03, waist chamfer station; 04, cutting outer chain plate head shape station; 05, waist thinning station; 06, head chamfer station; 07, fine punching station; 08, bottom hole punching station; 09, blanking blowing station; 010, cutting waste station; 1, lower die plate; 2, upper die plate; 3, rough punching concave die; 4, waist part cutting punch concave die; 5, waist chamfer concave die; 6, secondary cutting punch; 7, fixed plate; 8, front head chamfer punch A; 9, fine punching concave die; 10, fine punching punch; 11, blowing rod; 12, lower die cutting waste concave die; 13, mesh cutting knife insert; 14, waist waste cutting concave die; 15, front head chamfer punch B; 16, concave die plate; 17, discharging plate; 18, guide plate. DETAILED DESCRIPTION

[0023] The technical solutions in the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] The following embodiments can be understood as explaining the partial structure of the present application individually, or as explaining the larger range of structure of the present application through the combination of multiple embodiments.

[0025] In the present embodiment, a high-end bicycle chain outer chain plate integrated forming die, such as Figures 1-3As shown, including the upper die, lower die, the upper die from top to bottom in turn connected with the upper die seat 2, fixed plate 7, guide plate 18; The lower die from bottom to top in turn connected with the lower die seat 1, stripper plate 17, die plate 16; The upper die and lower die according to the running direction of the strip steel in turn provided with pre-punching station 01, cutting outer chain plate waist shape station 02, waist chamfer station 03, cutting outer chain plate head shape station 04, waist thinning station 05, head chamfer station 06, fine punching station 07, punching bottom hole station 08, falling material blowing station 09, cutting waste station 010.

[0026] In this embodiment, as shown in Figure 1 , 2 As shown, the pre-punching station 01 includes a rough punching die 3 provided on the die plate 16, and a rough punching punch provided on the upper die opposite to the rough punching die 3. The top of the rough punching punch is connected with the fixed plate, and the bottom penetrates the guide plate 18. This station is used for rough punching of the chain plate hole.

[0027] In this embodiment, as shown in Figure 1 , 2 As shown, the waist part cutting punch die 4 is provided on the die plate 16, and the waist part cutting punch is provided on the upper die above the waist part cutting punch die 4. The upper end of the waist part cutting punch is connected with the fixed plate 7, and the lower end penetrates the guide plate 18. This station is used for rough cutting of the waist shape of the outer chain plate.

[0028] In this embodiment, as shown in Figure 1 , 2 As shown, the waist chamfer station 03 includes a waist chamfer die 5 provided on the die plate 16, and a waist chamfer punch provided on the upper die above the waist chamfer die 5. The upper end of the waist chamfer punch is connected with the fixed plate 7, and the lower end penetrates the guide plate 18. This station is used for pressing the strip steel material thin by chamfering the edge of the waist of the workpiece, preparing for the subsequent cutting of waste material in the waist.

[0029] In this embodiment, as shown in Figure 1 , 2 As shown, the cutting outer chain plate head shape station 04 includes a secondary cutting punch 6 provided on the upper die, and the upper end of the secondary cutting punch 6 is connected with the fixed plate 7, and the lower end penetrates the guide plate 18. The secondary cutting die is provided on the die plate 16 opposite to the secondary cutting punch 6.

[0030] In this embodiment, as shown in Figure 1 , 2As shown, the waist thinning station 05 includes a waist thinning punch provided on the upper die (a common structure, not shown in the figure), and a waist thinning punch recess provided on the recess die plate opposite to the waist thinning punch. When the upper die and the lower die are closed, the waist thinning punch and the waist thinning punch recess cooperate to realize the thinning of the waist of the workpiece.

[0031] In this embodiment, as shown in Figure 1 , 2 As shown, the head chamfering station 06 includes a front head chamfering punch A8 and a front head chamfering punch B15 provided on the upper die, and a front head chamfering recess provided on the recess die plate opposite to the front head chamfering punch A8 and the front head chamfering punch B15. As shown in Figure 3 The head chamfering station 06 is used to chamfer the edge of the head of the outer chain plate workpiece, and the installation mode of the front head chamfering punch A8 and the front head chamfering punch B15 is the same as above, that is, the upper ends are connected with the fixed plate, and the lower ends penetrate the guide plate.

[0032] In this embodiment, as shown in Figure 1 , 3 As shown, the fine blanking station 07 includes a fine blanking recess 9 provided on the recess die plate 16, and a fine blanking punch 10 provided on the upper die opposite to the fine blanking recess. The upper end of the fine blanking punch 10 is connected with the fixed plate 7, and the lower end penetrates the fine blanking punch guide insert pre-provided on the guide plate 18.

[0033] In this embodiment, as shown in Figure 1 , 3 As shown, the bottom hole punching station 08 includes a bottom hole punching punch provided on the upper die (not shown in the figure) and a bottom hole recess provided on the recess die plate (not shown in the figure). It should be noted that the bottom hole is a common term used in construction workshops, and in fact, the bottom hole is an annular boss coaxially arranged around the lower end of the outer chain plate hole and the edge of the chain plate hole. Its function is to strengthen the strength of the chain plate hole and facilitate assembly. When the annular boss is punched, the bottom hole punching punch is pressed down, penetrates the chain plate hole, extrudes the edge of the chain plate hole downward, and forms the annular boss under the cooperation of the bottom hole recess.

[0034] In this embodiment, as shown in Figure 1 , 3As shown, the blanking and blowing station 09 includes structure one: a waist scrap slitting die 14 provided on the die plate, and a waist scrap slitting punch is installed above the waist scrap slitting die 14; structure two: a lower die scrap cutting die 12 provided on the die plate on the front side of the waist scrap slitting die 14, and a mesh material cutting knife insert 13 is installed at the upper die opposite to the lower die scrap cutting die 12; structure three: a blowing rod 11 is provided on the edge of the lower die scrap cutting die 12 in the longitudinal direction. The outer link plate is cut off between the outer link plate and the strip steel through structure one; the strip steel mesh material around the four outer link plates in parallel is cut off through structure two (as shown in Figure 3 ), and the outer link plate is blown out from the upper side of the mold opening through structure three.

[0035] In addition, the new type also has a scrap cutting station 010, which is used to cut the whole strip steel scrap (as shown in Figure 3 ) output by the mold, and its implementation is the same as the existing technology, and details are not repeated.

[0036] It should be noted that various mold components involved in the new type, except for special instructions, are common components set according to the shape of the chain plate in chain plate manufacturing, and the installation method and use principle not mentioned are detailed in the existing technology.

[0037] The use principle of the new type:

[0038] (1) The three-time slitting method is used to ensure that the flatness of the outer chain plate meets the higher requirements: the first slitting is to thin the waist scrap of the outer chain plate at the waist chamfer die 5, the second slitting is to cut off the head scrap of the outer chain plate with the head chamfer punch, and the third slitting is to cut off the waist scrap of the outer chain plate at the waist scrap slitting die 14.

[0039] (2) As shown in Figure 1 , 2 , an upper die mesh material cutting knife insert 13 is provided at the tail end of the upper die plate: when the mold works, the mesh material cutting knife insert 13 and the lower die scrap cutting die 12 form a pair of scissors, effectively cutting off the scrap, avoiding the mold damage caused by the lower die scrap cutting die 12 being blocked and the scrap being unable to be discharged.

[0040] (3) The blowing material discharge method is used: as shown in Figure 1 , 3As shown, in order to improve the flatness of the outer chain plate, the gas blowing rod 11 blows gas from the lower mold, and the outer chain plate blows out from the upper side of the mold (the gas is blown when the mold is opened, in order to improve the convenience, the position of the waste cutting off at the top of the lower mold can be set as an inclined surface inclined to the outside and below, and the gas blowing angle of the blowing rod can be inclined to the outside, when blowing, the outer chain plate is blown out without flying to the inside of the mold), the strip waste is cut off and discharged from the mold opening, and the conventional way is to cut off the outer chain plate while the outer chain plate is blanked, but the present new type is to blow out the outer chain plate after cutting off the outer chain plate through the blowing rod, compared with the existing way, the outer chain plate cut part is not easy to deform, and the flatness difference is effectively reduced.

[0041] (4) There is also a way to blow out the outer chain plate downward in the prior art, because the direction of the gravity of the chain plate and the blowing force tends to be the same, in the case of insufficient air pressure and the chain plate blocking the discharge port, the mold is easy to be damaged, the present new type changes the blowing direction, the waste is discharged from the outlet of the lower mold, and the outer chain plate blows out from the upper side of the mold opening, which avoids the damage of the mold and reduces the maintenance and use cost.

Claims

1. A high-end bicycle chain outer chain plate integral molding mold, characterized in that: The device includes an upper die and a lower die. The upper die is connected from top to bottom to an upper die base, a fixing plate, and a guide plate. The lower die is connected from bottom to top to a lower die base, a stripper plate, and a concave die plate. The upper and lower dies are provided with the following stations in sequence according to the direction of the strip's travel: a pre-punching station, a station for cutting the outer chain plate waist shape, a station for chamfering the waist, a station for cutting the outer chain plate head shape, a station for thinning the waist, a station for chamfering the head, a fine punching station, a station for punching the bottom hole, a station for blanking and blowing material, and a station for cutting scrap.

2. The high-end bicycle chain outer chain plate integrated molding die as described in claim 1, characterized in that: The pre-punching station includes a rough punch die set on the die plate, and a rough punching pin is provided on the upper die that is vertically opposite to the rough punch die. The top of the rough punching pin is connected to the fixed plate, and the bottom of the rough punching pin passes through the guide plate.

3. The high-end bicycle chain outer chain plate integrated molding die as described in claim 2, characterized in that: The aforementioned cutting station for the waist shape of the outer chain plate includes a waist cutting punch die set on the concave template. A waist cutting punch is provided on the upper die above the waist cutting punch die. The upper end of the waist cutting punch is connected to the fixed plate, and the lower end passes through the guide plate.

4. The high-end bicycle chain outer chain plate integrated molding die as described in claim 3, characterized in that: The waist chamfering station includes a waist chamfering die set on the concave template, and a waist chamfering punch is provided on the upper die above the waist chamfering die. The upper end of the waist chamfering punch is connected to the fixed plate, and the lower end passes through the guide plate.

5. The high-end bicycle chain outer chain plate integrated molding die as described in claim 4, characterized in that: The aforementioned cutting station for the outer chain plate head includes a secondary cutting punch on the upper die. The upper end of the secondary cutting punch is connected to the fixed plate, and the lower end passes through the guide plate. A secondary cutting die is provided on the die plate opposite to the secondary cutting punch.

6. The high-end bicycle chain outer chain plate integrated molding die as described in claim 5, characterized in that: The waist thinning station includes a waist thinning punch on the upper die, and a waist thinning punch die on the die plate opposite to the waist thinning punch.

7. The high-end bicycle chain outer chain plate integrated molding die as described in claim 6, characterized in that: The head chamfering station includes a front head chamfering punch and a front head chamfering punch B on the upper die, and a front head chamfering die on the die plate opposite to the front head chamfering punch A and the front head chamfering punch B.

8. The high-end bicycle chain outer chain plate integrated molding die as described in claim 7, characterized in that: The fine blanking station includes a fine blanking die set on the die plate, and a fine blanking punch on the upper die opposite to the fine blanking die. The upper end of the fine blanking punch is connected to the fixed plate, and the lower end passes through a fine blanking punch guide insert preset on the guide plate.

9. The high-end bicycle chain outer chain plate integral molding mold as described in claim 8, characterized in that: The aforementioned blanking and blowing station includes a waist waste material cutting die set on a concave template, and a waist waste material cutting punch installed on an upper die above the waist waste material cutting die; it also includes a lower waste material cutting die set on a concave template on the front side of the waist waste material cutting die, and a mesh cutting insert installed on the upper die opposite to the lower waste material cutting die, and an air blowing rod arranged longitudinally on the edge of the lower waste material cutting die.

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