Fixing device for screw cold header

Abstract

The utility model discloses a fixing device for a screw cold header, and relates to the technical field of cold header die fixing. Comprising a cold heading machine pressing plate, a fixing sleeve and a cold heading die shank, an assembly hole is formed in the cold heading machine pressing plate, the fixing sleeve is fixed in the assembly hole through a hexagon socket screw, and a claw type steel sleeve is sleeved with the fixing sleeve. According to the fixing device for the screw cold header, a cold heading die handle is inserted into the claw-type steel sleeve in the fixing sleeve, the screwing gland is screwed, the gland can continuously descend due to matching of threads, claws of the claw-type steel sleeve are continuously tightened through matching of the outer conical surface of the top end of the claw-type steel sleeve and the inner conical surface of the bottom of the gland, and therefore the screw cold header is fixed. On the contrary, the screwing pressing cover is screwed to enable the screwing pressing cover to rise continuously, the petals of the petals and claw type steel sleeve bounce off automatically, the cold heading die handle can be taken out easily in the mode, and therefore a cold heading machine die can be replaced conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of cold heading machine die fixing, in particular to a fixing device for a screw cold heading machine. Background Art

[0002] Cold heading machine is a kind of stamping machine in mechanical manufacturing. It forms the material into the required shape without making any changes to the raw material (mainly softening or hardening and other similar treatments). It is often used to manufacture fasteners such as bolts and screws. It has the characteristics of low noise, stable forming standards and diverse forming varieties.

[0003] Cold heading machines need to use cold heading dies when stamping. In other words, the quality of the cold heading dies determines the final forming effect to a certain extent. However, machines often need to perform different types of mold processing, which requires frequent replacement of cold heading dies. Today's cold heading dies are generally fixed in sleeves, which makes replacement more troublesome. Utility Model Content

[0004] The utility model provides a fixing device for a screw cold heading machine to solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixing device for a screw cold heading machine, comprising a cold heading machine pressure plate, a fixed sleeve and a cold heading die handle, the cold heading machine pressure plate is provided with an assembly hole, the fixed sleeve is fixed in the assembly hole by a hexagon socket bolt, a flap-claw type steel sleeve is sleeved in the fixed sleeve, and the flap-claw type steel sleeve is fixed in the fixed sleeve by a hexagon socket bolt, the cold heading die handle is inserted into the flap-claw type steel sleeve, the upper part of the fixed sleeve is threadedly connected with a screw-on pressure cover, and a through hole is provided in the screw-on pressure cover, the tail of the cold heading die handle extends outward from the through hole, the bottom of the through hole is provided with an inner conical surface, the outer edge of the top end of the flap-claw type steel sleeve is provided with an outer conical surface, and the inner conical surface and the outer conical surface are movably connected to each other.

[0006] Furthermore, the cross-sections of the assembly hole and the fixing sleeve are both T-shaped, and the upper portion of the fixing sleeve extends from the assembly hole out of the cold heading machine platen.

[0007] Furthermore, the inner wall of the claw of the claw-type steel sleeve is provided with a flat key, and the head end of the cold heading die handle is provided with a keyway.

[0008] Furthermore, the flat keys are located on both sides of the claw-type steel sleeve, and the key slots are located on both sides of the head end of the cold heading die handle, and the positions of the key slots and the flat keys correspond to each other.

[0009] Furthermore, the inner upper portion of the fixing sleeve is provided with an internal thread, and the lower portion of the screw-on pressure cover is provided with an external thread, and is threadably connected to the fixing sleeve via the external thread and the internal thread.

[0010] Furthermore, the cross section of the screw-down cover is T-shaped, and an operating ear hole is provided on the outer side of the upper portion of the screw-down cover.

[0011] Compared with the prior art, the utility model provides a fixing device for a screw cold heading machine, which has the following beneficial effects:

[0012] The screw cold heading machine fixing device inserts the cold heading die handle into the flap-claw steel sleeve in the fixed sleeve, and the screw cover is turned. Due to the cooperation of the thread, the cover will continue to drop, and the outer cone surface at the top of the flap-claw steel sleeve and the inner cone surface at the bottom of the cover are matched, so that the flap claws of the flap-claw steel sleeve are continuously tightened, thereby clamping and fixing the cold heading die handle. Conversely, the screw cover is turned to make it rise continuously, and the flap claws of the flap-claw steel sleeve automatically pop open. In this way, the cold heading die handle can be easily taken out, thereby facilitating the replacement of the cold heading machine die. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] Figure 3 It is an exploded view of the utility model.

[0016] In the figure: 1. Cold heading machine pressure plate; 2. Fixed sleeve; 3. Cold heading die handle; 4. Assembly hole; 5. Flap-claw steel sleeve; 6. Screw-on pressure cover; 7. Through hole; 8. Inner cone surface; 9. Outer cone surface; 10. Flat key; 11. Keyway; 12. Internal thread; 13. External thread; 14. Operating ear hole. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-Figure 3The utility model discloses a fixing device for a screw cold heading machine, comprising a cold heading machine platen 1, a fixing sleeve 2 and a cold heading die handle 3. The cold heading machine platen 1 is provided with an assembly hole 4, the fixing sleeve 2 is fixed in the assembly hole 4 by a hexagon socket bolt, a flap-claw steel sleeve 5 is sleeved in the fixing sleeve 2, and the flap-claw steel sleeve 5 is fixed in the fixing sleeve 2 by a hexagon socket bolt, the cold heading die handle 3 is inserted in the flap-claw steel sleeve 5, the upper part of the fixing sleeve 2 is threadedly connected with a screwing cover 6, and a through hole 7 is provided in the screwing cover 6, the tail of the cold heading die handle 3 extends outward from the through hole 7, and the bottom of the through hole 7 is provided with an inner cone 8, An outer conical surface 9 is provided on the outer edge of the top end of the flap-claw steel sleeve 5, and the inner conical surface 8 and the outer conical surface 9 are movably connected to each other. The cold heading die handle 3 is inserted into the flap-claw steel sleeve 5 in the fixed sleeve 2, and the screw cover 6 is twisted. Due to the cooperation of the thread, the cover will continue to drop. Through the cooperation between the outer conical surface 9 at the top end of the flap-claw steel sleeve 5 and the inner conical surface 8 at the bottom of the cover, the flap claws of the flap-claw steel sleeve 5 are continuously tightened, thereby realizing the clamping and fixing of the cold heading die handle 3. Conversely, the screw cover 6 is twisted to make it rise continuously, and the flap claws of the flap-claw steel sleeve 5 automatically pop open. In this way, the cold heading die handle 3 can be easily taken out, thereby facilitating the replacement of the cold heading machine die.

[0019] Specifically, the cross sections of the assembly hole 4 and the fixing sleeve 2 are both T-shaped, and the upper portion of the fixing sleeve 2 extends from the assembly hole 4 to the outside of the cold heading machine platen 1 .

[0020] In this embodiment, the assembly hole 4 is used for positioning, and the fixing sleeve 2 is fixed to the cold heading machine platen 1 by means of hexagon socket bolts.

[0021] Specifically, a flat key 10 is provided on the inner wall of the claw of the claw-type steel sleeve 5 , and a keyway 11 is provided on the head end of the cold heading die handle 3 .

[0022] In this embodiment, the cooperation between the flat key 10 and the keyway 11 facilitates the stable connection between the flap-claw steel sleeve 5 and the cold heading die handle 3 .

[0023] Specifically, the flat keys 10 are located on both sides of the claw-type steel sleeve 5 , and the key slots 11 are located on both sides of the head end of the cold heading die handle 3 , and the positions of the key slots 11 and the flat keys 10 correspond to each other.

[0024] In this embodiment, when the cold heading die handle 3 is installed, the position needs to be adjusted so that the keyway 11 and the flat key 10 correspond to each other.

[0025] Specifically, an internal thread 12 is provided at the inner upper portion of the fixing sleeve 2 , and an external thread 13 is provided at the lower portion of the screw-on pressing cover 6 , and the screw-on pressing cover 6 is threadedly connected to the fixing sleeve 2 via the external thread 13 and the internal thread 12 .

[0026] In this embodiment, the outer thread 13 and the inner thread 12 cooperate with each other, so that the screw-on cover 6 and the fixed sleeve 2 are thread-matched.

[0027] Specifically, the cross section of the screw-on pressing cover 6 is T-shaped, and an operating ear hole 14 is provided on the outer side of the upper portion of the screw-on pressing cover 6 .

[0028] In this embodiment, when operating the screw-on pressing cover 6 , a tool (such as a round tool such as a screwdriver or a screwdriver) can be inserted into the operating ear hole 14 , and then force is applied to screw the screw-on pressing cover 6 .

[0029] When in use, insert the cold heading die handle 3 into the flap-claw type steel sleeve 5 in the fixed sleeve 2, and twist the screw cover 6. Due to the cooperation of the thread, the cover will continue to drop, and the outer conical surface 9 at the top of the flap-claw type steel sleeve 5 and the inner conical surface 8 at the bottom of the cover will cooperate to make the flap claws of the flap-claw type steel sleeve 5 continuously tightened, thereby achieving the clamping and fixing of the cold heading die handle 3. Conversely, twist the screw cover 6 to make it rise continuously, and the flap claws of the flap-claw type steel sleeve 5 will automatically pop open. In this way, the cold heading die handle 3 can be easily taken out, thereby facilitating the replacement of the cold heading machine die.

[0030] To sum up, the screw cold heading machine fixing device inserts the cold heading die handle 3 into the flap-claw type steel sleeve 5 in the fixed sleeve 2, and twists the screw cover 6. Due to the cooperation of the thread, the cover will continue to drop, and the outer conical surface 9 at the top of the flap-claw type steel sleeve 5 and the inner conical surface 8 at the bottom of the cover will cooperate to make the flap claws of the flap-claw type steel sleeve 5 continuously tightened, thereby achieving the clamping and fixing of the cold heading die handle 3. Conversely, the screw cover 6 is twisted to make it rise continuously, and the flap claws of the flap-claw type steel sleeve 5 automatically pop open. In this way, the cold heading die handle 3 can be easily taken out, thereby facilitating the replacement of the cold heading machine die.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixing device for a screw cold heading machine, comprising a cold heading machine pressing plate (1), a fixing sleeve (2) and a cold heading die handle (3), characterized in that: The cold heading machine pressure plate (1) is provided with an assembly hole (4), the fixed sleeve (2) is fixed in the assembly hole (4) by means of an inner hexagonal bolt, a flap-claw steel sleeve (5) is sleeved in the fixed sleeve (2), and the flap-claw steel sleeve (5) is fixed in the fixed sleeve (2) by means of an inner hexagonal bolt, the cold heading die handle (3) is inserted into the flap-claw steel sleeve (5), the upper part of the fixed sleeve (2) is threadedly connected with a screw-on pressure cover (6), and a through hole (7) is provided in the screw-on pressure cover (6), the tail of the cold heading die handle (3) extends outward from the through hole (7), the bottom of the through hole (7) is provided with an inner conical surface (8), the outer edge of the top end of the flap-claw steel sleeve (5) is provided with an outer conical surface (9), and the inner conical surface (8) and the outer conical surface (9) are movably connected to each other.

2. A fixing device for a screw cold heading machine according to claim 1, characterized in that: The cross sections of the assembly hole (4) and the fixed sleeve (2) are both T-shaped, and the upper part of the fixed sleeve (2) extends from the assembly hole (4) to the outside of the cold heading machine pressing plate (1).

3. A fixing device for a screw cold heading machine according to claim 1, characterized in that: The inner wall of the claw of the claw-type steel sleeve (5) is provided with a flat key (10), and the head end of the cold heading die handle (3) is provided with a keyway (11).

4. A fixing device for a screw cold heading machine according to claim 3, characterized in that: The flat keys (10) are located on both sides of the claw-type steel sleeve (5), and the key slots (11) are located on both sides of the head end of the cold heading die handle (3), and the positions of the key slots (11) and the flat keys (10) correspond to each other.

5. The fixing device for a screw cold heading machine according to claim 1, characterized in that: The upper inner portion of the fixed sleeve (2) is provided with an internal thread (12), and the lower portion of the screw-on cover (6) is provided with an external thread (13), and is threadedly connected to the fixed sleeve (2) via the external thread (13) and the internal thread (12).

6. A fixing device for a screw cold heading machine according to claim 1, characterized in that: The cross section of the screw-on pressing cover (6) is T-shaped, and an operating ear hole (14) is provided on the outer side of the upper part of the screw-on pressing cover (6).

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