A molding die and molding method for a lock spring strip

Abstract

The present invention discloses a molding die and molding method for a lock buckle spring strip, the die comprises an upper die plate and a mounting seat and a support plate arranged on a workbench, wherein: a material pusher seat is arranged on the mounting seat, and a roller is arranged on the material pusher seat; a lower die pad is arranged on the support plate, and a profiling die and a lock buckle lower die are arranged on the lower die pad; an inclined push block and a heel end upper die are arranged on the upper die plate, and an upper die roller is arranged on the heel end upper die. Compared with the prior art, the present invention has the following positive effects: the present invention provides a molding die and molding method for a third-order product of a lock buckle spring strip, and the spring strip lock can be successfully molded by matching the profiling die with the lock buckle lower die, and the production of the lock buckle spring strip can be completed. At the same time, due to the molding method using the material pusher seat, the spring strip with an excessively long middle limb can be produced, which effectively solves the problem of the excessively long middle limb colliding with the mold forming a large arch height.

Description

Technical Field

[0001] The invention relates to a molding die and a molding method for a lock buckle spring strip. Background Art

[0002] The fastener system is an important component of the track structure. Its function is to fix the position of the rail, prevent the longitudinal and lateral displacement of the rail, and prevent the rail from tipping over. At the same time, it can also provide the necessary elasticity and insulation performance. The spring bar plays a vital role in the fastening pressure. The existing spring bars are loose, and the locking spring bar can solve this problem well. The current tooling is suitable for the production of ordinary E-type spring bars, but cannot produce locking spring bars. Therefore, it is necessary to design a mold suitable for the molding of locking spring bars.

[0003] The lock spring strip is produced through three processes, one of which is a molded product such as Figure 1 As shown, the two-stage molding product is Figure 2 As shown, the invention is mainly directed to the forming of third-order products. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the present invention proposes a molding die and a molding method for a lock buckle spring bar, which are used for molding a third-order product of the lock buckle spring bar.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a forming mold for a lock spring strip, including an upper mold plate and a mounting base and a support plate arranged on a workbench, wherein: a pusher seat is arranged on the mounting base, and a roller is arranged on the pusher seat; a lower mold pad is arranged on the support plate, and a contour mold and a lock lower mold are arranged on the lower mold pad; an inclined push block and a heel end upper mold are arranged on the upper mold plate, and an upper mold roller is arranged on the heel end upper mold.

[0006] Furthermore, positioning bolts and a stopper are respectively arranged on the outer side and the inner side of the pusher seat base, and a return spring is arranged between the pusher seat base and the stopper.

[0007] Furthermore, an oblong hole is provided on the upper template, and the oblique push block is connected to the upper template via bolts and the oblong hole.

[0008] Furthermore, two pressing plates are arranged on the pushing seat.

[0009] Furthermore, a side of the pusher seat in contact with the large arch height of the elastic bar is arranged as an arc surface.

[0010] Furthermore, the roller is connected to the material pushing seat via a shaft.

[0011] Furthermore, the upper die roller is connected to the heel end upper die via a shaft.

[0012] Furthermore, the profiling die and the locking lower die are both connected to the lower die pad via bolts.

[0013] Furthermore, a spring is arranged at the lower end of the supporting plate.

[0014] The present invention also provides a method for forming a locking spring strip, comprising the following steps:

[0015] Step 1: Install the molding die:

[0016] A mounting seat and a support plate are arranged on the workbench, a positioning bolt, a pusher seat and a stopper are arranged on the mounting seat in sequence, a reset spring is arranged between the pusher seat and the stopper, and a roller is arranged on the pusher seat; a lower die pad is arranged on the support plate, a profiling die and a locking lower die are arranged on the lower die pad; the oblique pusher block is installed on the upper die plate, and an upper die roller is arranged on the upper die at the heel end of the upper die plate;

[0017] Step 2: Place the second-order molding material in the profiling mold, and place the large arch side of the second-order molding material on the arc surface of the pusher seat;

[0018] Step 3: The press moves downward, driving the inclined push block to push the roller to move rightward to form a large arch height of the spring bar; as the press moves downward, the upper die roller presses the spring bar into the profiling die to form a small arch height of the spring bar, and at the same time forms a spring bar lock buckle at the lock buckle lower die;

[0019] Step 4: As the press moves downward, all the molds on the lower mold pad move downward together, so that the spring at the lower end of the support plate is in a compressed state;

[0020] Step 5. After the molding is completed, the press moves upward, and the lower die pad is reset and removed by the spring. At the same time, the pusher moves to the left by the reset spring until it stops at the positioning bolt.

[0021] Compared with the prior art, the present invention has the following positive effects:

[0022] The present invention provides a molding die and molding method for a third-order product of a lock buckle spring bar. The spring bar lock buckle can be successfully molded by matching the profiling die with the lock buckle lower die, thereby completing the production of the lock buckle spring bar. At the same time, due to the molding method using a pusher seat, spring bars with excessively long middle limbs can be produced, thereby effectively solving the problem of the excessively long middle limb colliding with the mold that forms a large arch height. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0024] Figure 1 It is a one-step molding product;

[0025] Figure 2 It is a two-step molding product;

[0026] Figure 3It is a structural schematic diagram of the molding die of the present invention;

[0027] Figure 4 A three-dimensional diagram of a molding die of the present invention;

[0028] Figure 5 It is the front view of the pusher seat 3;

[0029] Figure 6 It is a top view of the pusher seat 3;

[0030] Figure 7 It is a side view of the pusher seat 3;

[0031] Figure 8 It is a structural schematic diagram of the profiling mold 7;

[0032] Fig. 9 It is a structural schematic diagram of the lock lower mold 8. DETAILED DESCRIPTION

[0033] A molding die for a lock spring strip, such as Figure 3 and Figure 4 As shown, it includes: an oblique push block 1, a roller 2, a push seat 3, a positioning bolt 4, a return spring 5, an upper die roller 6, a contour die 7, a locking lower die 8, a lower die pad 9, a support plate 10, etc., wherein:

[0034] The oblique push block 1 is connected to the upper template through bolts and oblong holes and can be moved left and right for adjustment; the roller 2 is connected to the push seat through an axis and can be rolled.

[0035] The structure of the pusher seat 3 is as follows Figures 5 to 7 As shown, it includes: a first pressing plate 31, a second pressing plate 32, an arc surface 33, etc. The two pressing plates cover the pusher seat, and the contact surface between the pressing plate and the pusher seat is relatively smooth, and can slide left and right. The function of the pusher seat is to realize the initial positioning of the spring bar and the formation of the large arch height. The arc surface of the pusher seat plays a role in supporting the material while avoiding collision with the middle limb.

[0036] A positioning bolt 4 and a return spring 5 are respectively arranged on both sides of the base of the pusher seat, and a spring stopper is arranged at the right end of the return spring 5.

[0037] The upper die roller 6 is connected to the upper die at the heel end through a shaft, and can be rolled to prevent the elastic strip from being damaged.

[0038] The structure of the profiling die 7 is as follows: Figure 8 As shown, the profiling die 7 is connected to the lower die pad 9 by bolts, which plays a profiling role and forms a small arch height, leaving a position for locking the lower die 8 at the right end of the profiling die.

[0039] The structure of the lock lower mold 8 is as follows Fig. 9As shown, the lock buckle lower die 8 is connected to the lower die pad 9 by bolts. The lock buckle lower die is used to form the lock buckle of the elastic bar. The lock buckle can make the elastic bar achieve a self-locking effect to prevent loosening.

[0040] The lower die pad 9 and the support plate 10 are connected by bolts, and a spring is arranged at the lower end of the support plate 10 .

[0041] The base of the pusher seat, the positioning bolt 4 and the stopper of the return spring 5 are all arranged on the mounting seat, and the mounting seat and the supporting plate 10 are all arranged on the workbench.

[0042] Assembly of the forming mold: a pusher device mounting seat and a support plate 10 are set on the workbench, positioning bolts 4, a pusher seat 3 and a block are set on the mounting seat in sequence, a reset spring 5 is set between the pusher seat and the block, and a roller 2 is set on the pusher seat 3; a lower die pad 9 is set on the support plate 10, and a contour die 7 and a locking lower die 8 are set on the lower die pad 9. The oblique pusher block 1 is connected to the upper die plate through bolts and oblong holes, a heel end upper die is set on the upper die plate, and the upper die roller 6 is connected to the heel end upper die through a shaft.

[0043] Working principle of the present invention:

[0044] During assembly, the oblique push block 1 is connected to the upper template through bolts and oblong holes and can be adjusted left and right. Figure 2 The second-order molding material shown is placed in the profiling die 7, and the large arch height side of the second-order molding material is placed on the arc surface of the push seat 3. When the press moves downward, the oblique push block 1 pushes the roller 2 to the right to form a large arch height of the elastic bar, and the upper die roller 6 presses the elastic bar into the profiling die 7 to form a small arch height of the elastic bar, and forms an elastic bar lock at the lock lower die 8. The lower die pad 9 and the support plate 10 are connected by bolts, and a spring is placed at the lower end. During the downward pressing process, the spring is in a compressed state, and all the molds on the lower die pad 9 move downward together; when the equipment moves upward, the lower die pad 9 is reset and removed under the action of the spring, and the push seat 3 moves to the left under the action of the reset spring 5 until it stops at the positioning bolt 4.

Claims

1. A molding method based on a lock spring strip molding die, characterized in that: The forming mold comprises an upper template and a mounting seat and a support plate arranged on a workbench, wherein: a pusher seat is arranged on the mounting seat, and a roller is arranged on the pusher seat; a lower mold pad is arranged on the support plate, and a profiling mold and a locking lower mold are arranged on the lower mold pad; an oblique push block and a heel end upper mold are arranged on the upper template, and an upper mold roller is arranged on the heel end upper mold; the specific forming method comprises the following steps: Step 1: Install the molding die: A mounting seat and a support plate are arranged on the workbench, a positioning bolt, a pusher seat and a stopper are arranged on the mounting seat in sequence, a reset spring is arranged between the pusher seat and the stopper, and a roller is arranged on the pusher seat; a lower die pad is arranged on the support plate, a profiling die and a locking lower die are arranged on the lower die pad; the oblique pusher block is installed on the upper die plate, and an upper die roller is arranged on the upper die at the heel end of the upper die plate; Step 2: Place the second-order molding material in the profiling mold, and place the large arch side of the second-order molding material on the arc surface of the pusher seat; Step 3: The press moves downward, driving the inclined push block to push the roller to move rightward to form a large arch height of the spring bar; as the press moves downward, the upper die roller presses the spring bar into the profiling die to form a small arch height of the spring bar, and at the same time forms a spring bar lock buckle at the lock buckle lower die; Step 4: As the press moves downward, all the molds on the lower mold pad move downward together, so that the spring at the lower end of the support plate is in a compressed state; Step 5. After the molding is completed, the press moves upward, and the lower die pad is reset and removed by the spring. At the same time, the pusher moves to the left by the reset spring until it stops at the positioning bolt.

2. A molding method based on a locking spring strip molding die according to claim 1, characterized in that: Positioning bolts and a stopper are respectively arranged on the outer side and the inner side of the pusher seat base, and a return spring is arranged between the pusher seat base and the stopper.

3. The molding method based on the locking spring strip molding die according to claim 1 is characterized in that: An oblong hole is arranged on the upper template, and the oblique push block is connected with the upper template through bolts and the oblong hole.

4. A molding method based on a locking spring strip molding die according to claim 1, characterized in that: The roller is connected with the material pushing seat through a shaft.

5. The molding method based on the locking spring strip molding die according to claim 1 is characterized in that: The upper die roller is connected with the heel end upper die through a shaft.

6. A molding method based on a locking spring strip molding die according to claim 1, characterized in that: The profiling die and the locking lower die are both connected to the lower die pad through bolts.

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