Fastener cold heading device

Abstract

The utility model provides a fastener cold heading device, and relates to the technical field of fastener processing, the fastener cold heading device comprises a material placing part, the material placing part is used for placing bar materials; the transferring part is used for transferring the bars conveyed from the discharging part; the number of the driving parts is two, one of the driving parts is used for controlling movement of the bars in the discharging part, a forming head is arranged at the output end of the other driving part, and the driving parts extrude the bars in the transferring part by controlling movement of the forming head; when the device is used, the movable block filled with the bars can be moved to the fixed plate on one side of the fixed block, when the bars are subjected to extrusion forming at the position, other bars in the fixed block cannot affect forming of the bars, it is guaranteed that the thickness of the heads of the bars is uniform after the bars are formed, and the bars are not prone to deformation. The product quality is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of fastener processing, in particular to a cold heading device for fasteners. Background Art

[0002] Cold heading is a processing technology that, according to the metal plastic deformation theory, applies a certain pressure to a metal blank at normal temperature to cause plastic deformation in a die cavity and form it into a specified shape and size. In existing fasteners, the heads of the rod bodies are often processed by cold heading.

[0003] When the existing cold heading device is in use, all the bars to be cold headed are located in one channel. When extruding the bar at the front end, it will cause extrusion to the subsequent bars. Since there are tiny intervals between the bars, when the errors of multiple intervals accumulate together, it is easy to cause the thickness of the cold headed head of the rod body to be thinner than the thickness of the normal rod body head, affecting the product quality. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a cold heading device for fasteners, aiming to solve the problems mentioned in the above background art.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: The cold heading device for fasteners includes a feeding part for placing the bar; a transfer part for transferring the bar transported from the feeding part; a driving part, two driving parts are provided, one driving part is used to control the movement of the bar in the feeding part, and the output end of the other driving part is provided with a forming head, and this driving part extrudes the bar in the transfer part by controlling the movement of the forming head; and an installation table, and the above components are arranged on the installation table.

[0006] Preferably, the feeding part includes a fixed block arranged on the installation table, a through groove for accommodating the bar is arranged inside the fixed block, an inclined feeding groove is arranged on one side of the fixed block, and the feeding groove is connected to the through groove in a penetrating manner.

[0007] Preferably, the transfer part includes a movable block, a forming cavity for accommodating the bar is opened on the movable block, a fixed plate is arranged on one side of the fixed block, fixed rods are symmetrically arranged on both sides of the fixed plate and the fixed block, sliders slidably connected to the fixed rods are symmetrically arranged on both sides of the movable block, springs are sleeved on the fixed rods, and the springs are used to push the movable block to one side of the fixed block, and when the springs on the fixed rods are in the maximum extended state, the forming cavity on the movable block is in communication with the through groove on the fixed block. A vertical plate is arranged on the installation table, a rotating shaft is arranged on the vertical plate, an eccentric wheel is arranged at one end of the rotating shaft, and a first motor for driving the rotating shaft to rotate is arranged on one side of the vertical plate.

[0008] Preferably, the driving part includes a base arranged on the mounting table, a crankshaft rotatably connected to the base, a second motor for controlling the rotation of the crankshaft arranged on one side of the base, and further includes a push rod and a connecting rod. The two ends of the connecting rod are respectively rotatably connected to the push rod and the crankshaft. The push rod in one driving part is located inside the through groove of the fixed block, and the forming head is arranged on the push rod in the other driving part. A guiding platform is arranged on the mounting table, and the push rod installed with the forming head moves along the guiding platform.

[0009] Preferably, a material guiding plate is arranged on the mounting table.

[0010] The beneficial effects of the present utility model are as follows:

[0011] When the device is in use, the movable block loaded with the bar stock can be moved to the fixed plate on one side of the fixed block. When the bar stock is extruded and formed at this position, the remaining bar stocks in the fixed block will not affect the forming of this bar stock, ensuring that the thickness of the head of the bar stock is uniform after forming and guaranteeing the product quality. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of a specific embodiment of the present utility model.

[0013] Figure 2 is a schematic structural diagram of the material guiding plate of a specific embodiment of the present utility model.

[0014] Figure 3 is a cross-sectional view of the fixed block of a specific embodiment of the present utility model.

[0015] Figure 4 is a cross-sectional view of the blanking groove of a specific embodiment of the present utility model.

[0016] In the figure: 1, bar stock; 2, forming head; 3, mounting table; 4, fixed block; 5, blanking groove; 6, movable block; 7, fixed plate; 8, fixed rod; 9, slider; 10, spring; 11, vertical plate; 12, rotating shaft; 13, eccentric wheel; 14, first motor; 15, base; 16, crankshaft; 17, second motor; 18, push rod; 19, connecting rod; 20, guiding platform; 21, material guiding plate. Specific Embodiments

[0017] The following further describes the specific embodiments of the present utility model with reference to the drawings.

[0018] Such as Figures 1-4As shown in the figure, a cold heading device for fasteners includes a feeding part for placing the bar stock 1; a transfer part for transferring the bar stock 1 transported from the feeding part; a driving part, there are two driving parts, one of the driving parts is used to control the movement of the bar stock 1 in the feeding part, and the output end of the other driving part is provided with a forming head 2, and this driving part squeezes the bar stock 1 in the transfer part by controlling the movement of the forming head 2; an installation table 3, and the above-mentioned components are arranged on the installation table 3.

[0019] Furthermore, the feeding part includes a fixed block 4 arranged on the installation table 3. A through groove for accommodating the bar stock 1 is arranged inside the fixed block 4. An inclined feeding groove 5 is arranged on one side of the fixed block 4. The feeding groove 5 is connected to the through groove in a penetrating manner. When placing the bar stock 1 into the through groove of the fixed block 4, first place the bar stock 1 on the feeding groove 5 in sequence. The bar stock 1 slides along the feeding groove 5 and falls into the through groove of the fixed block 4. The driving part is used to push the bar stock 1 in the through groove to move. When the bar stock 1 at the junction of the feeding groove 5 and the through groove is pushed away by the driving part, a new bar stock 1 will enter the through groove of the fixed block 4 through the feeding groove 5, so as to realize that the bar stock 1 continuously enters the through groove of the fixed block 4 from the feeding groove 5.

[0020] Further, the transfer part includes a movable block 6. A forming cavity for accommodating the rod blank 1 is formed on the movable block 6. A fixing plate 7 is arranged on one side of the fixing block 4. Fixing rods 8 are symmetrically arranged on both sides of the fixing plate 7 and the fixing block 4. Sliders 9 slidably connected to the fixing rods 8 are symmetrically arranged on both sides of the movable block 6. A spring 10 is sleeved on the fixing rod 8. The spring 10 is used to push the movable block 6 to one side of the fixing block 4. When the spring 10 on the fixing rod 8 is in the maximum extended state, the forming cavity on the movable block 6 communicates with the through groove on the fixing block 4. A vertical plate 11 is arranged on the mounting table 3. A rotating shaft 12 is arranged on the vertical plate 11. An eccentric wheel 13 is arranged at one end of the rotating shaft 12. A first motor 14 for driving the rotating shaft 12 to rotate is arranged on one side of the vertical plate 11. After the rod blank 1 in the fixing block 4 is pushed into the forming cavity of the movable block 6 by the driving part, the first motor 14 is started. The output end of the first motor 14 drives the rotating shaft 12 and the eccentric wheel 13 to rotate. When the eccentric wheel 13 rotates, under the action of the spring 10, the outer surface of the eccentric wheel 13 continuously abuts against the outer surface of the movable block 6. When the movable block 6 is moved to the position aligned with the forming head 2 by the eccentric wheel 13, the first motor 14 stops working. Then, the forming head 2 is controlled to move by another driving part to extrude the rod blank 1 in the movable block 6 into a formed shape. After the extrusion of the rod blank 1 is completed, the first motor 14 is started and drives the eccentric wheel 13 to reset. Under the action of the spring 10, the movable block 6 is pushed to move by the slider 9. After the eccentric wheel 13 is reset, the spring 10 is at the maximum extended length on the fixing rod 8. At this time, the forming cavity on the movable block 6 is aligned with the through groove on the fixing block 4. The rod blank 1 in the fixing block 4 can directly enter the forming cavity of the movable block 6. Moreover, during the process of the movable block 6 leaving the through groove of the fixing block 4, the eccentric wheel 13 can block the opening of the through groove at one end of the fixing block 4 by itself to prevent the rod blank 1 in the fixing block 4 from protruding from the fixing block 4 during the cold heading extrusion process, which may affect the reset of the movable block 6.

[0021] Further, the driving part includes a base 15 arranged on the mounting table 3. A crankshaft 16 is rotatably connected to the base 15. A second motor 17 for controlling the rotation of the crankshaft 16 is arranged on one side of the base 15. The driving part further includes a push rod 18 and a connecting rod 19. The two ends of the connecting rod 19 are respectively rotatably connected to the push rod 18 and the crankshaft 16. The push rod 18 in one driving part is located inside the through groove of the fixed block 4. The forming head 2 is arranged on the push rod 18 in the other driving part. A guiding table 20 is arranged on the mounting table 3. The push rod 18 installed with the forming head 2 moves along the guiding table 20. When the driving part operates, the second motor 17 is started, and the second motor 17 drives the crankshaft 16 to rotate. When the crankshaft 16 rotates, the push rod 18 is driven to move through the connecting rod 19. Through the through groove in the fixed block 4 and the guiding table 20, the reciprocating linear movement of the push rod 18 can be controlled, so that the bar stock 1 in the fixed block 4 can be pushed into the forming cavity of the movable block 6, and the bar stock 1 in the forming cavity can be cold-heading extruded by the forming head 2.

[0022] Further, a material guiding plate 21 is arranged on the mounting table 3. After the movable block 6 is reset, as the driving part pushes a new bar stock 1 from the through groove of the fixed block 4 into the forming cavity of the movable block 6, the bar stock 1 that has been extruded in the forming cavity is pushed out, falls onto the material guiding plate 21, and rolls away along the material guiding plate 21, so as to prevent the bar stock 1 from accumulating directly below the movable block 6.

[0023] When the device is in use, the movable block 6 loaded with the bar stock 1 can be moved to the fixing plate 7 on one side of the fixed block 4. When the bar stock 1 is extruded and formed at this position, the remaining bar stocks 1 in the fixed block 4 will not affect the forming of this bar stock 1, ensuring that the thickness of the head of the bar stock 1 is uniform after forming and guaranteeing the product quality.

[0024] In the description of the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Claims

1. A cold heading device for fasteners, characterized in that, Including: Installation table; Feeding part, the feeding part is used for placing the bar stock. The feeding part includes a fixed block arranged on the installation table. A through groove for accommodating the bar stock is arranged inside the fixed block. An inclined feeding groove is arranged on one side of the fixed block. The feeding groove is connected to the through groove in a penetrating manner; Transfer part, the transfer part is used for transferring the bar stock transported from the feeding part. The transfer part includes a movable block. A forming cavity for accommodating the bar stock is arranged on the movable block. A fixing plate is arranged on one side of the fixed block. Fixing rods are symmetrically arranged on both sides of the fixing plate and the fixed block. Sliders slidably connected to the fixing rods are symmetrically arranged on both sides of the movable block. Springs are sleeved on the fixing rods. The springs are used to push the movable block to one side of the fixed block. When the springs on the fixing rods are in the maximum extended state, the forming cavity on the movable block is in communication with the through groove on the fixed block. A vertical plate is arranged on the installation table. A rotating shaft is arranged on the vertical plate. An eccentric wheel is arranged at one end of the rotating shaft. A first motor for driving the rotating shaft to rotate is arranged on one side of the vertical plate; Driving part, there are two driving parts. One driving part is used to control the movement of the bar stock in the feeding part. The output end of the other driving part is provided with a forming head. This driving part squeezes the bar stock in the transfer part by controlling the movement of the forming head. The driving part includes a base arranged on the installation table. A crankshaft is rotatably connected to the base. A second motor for controlling the rotation of the crankshaft is arranged on one side of the base. A push rod and a connecting rod are also included. The two ends of the connecting rod are respectively rotatably connected to the push rod and the crankshaft. The push rod in one driving part is located inside the through groove of the fixed block. The forming head is arranged on the push rod in the other driving part. A guiding table is arranged on the installation table. The push rod installed with the forming head moves along the guiding table.

2. The cold heading device for fasteners according to claim 1, characterized in that, A guiding plate is arranged on the installation table.

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