Welding fixture for cold pressing die

Abstract

The invention relates to the technical field of cold pressing mold machining, and discloses a welding fixture for a cold pressing mold, which solves the problem that mold parts with different shapes are inconvenient to stably clamp at present, and comprises a bottom frame, a clamping mechanism is arranged on the bottom frame, and a shielding mechanism is arranged at the top of the bottom frame. The clamping mechanism comprises two inner rods symmetrically fixed to the inner side of the bottom frame, two inner plates are symmetrically and movably connected between the two inner rods in a sleeving mode, a containing table located between the two inner plates is fixedly connected between the two inner rods in a sleeving mode, supporting shafts are rotationally connected to the tops of the two inner plates, and vertical plates are fixedly connected to the top ends of the two supporting shafts. The sides, close to each other, of the two vertical plates are fixedly connected with square plates. According to the clamping device, through cooperation of the driving motor, the two-way lead screw, the nut, the inner plate and the inner rod, the two square plates or the two arc-shaped plates can get close to each other conveniently, and therefore mold parts of different shapes can be stably clamped conveniently.

Description

Technical Field

[0001] The invention belongs to the technical field of cold pressing die processing, and in particular relates to a welding fixture for a cold pressing die. Background Art

[0002] A cold pressing die is a non-cutting processing tool that uses high pressure at room temperature to plastically deform metal materials to obtain the required parts. It mainly includes two categories: cold extrusion dies and cold stamping dies. It has the characteristics of saving materials and improving production efficiency. The cold pressing die needs to be welded during the processing process. In order to ensure the stability of the cold pressing die, it needs to be clamped and fixed with a fixture.

[0003] In the existing cold stamping die welding fixture technology, two clamps are usually used to clamp and fix the mold. This fixture structure is relatively simple, and the mold is clamped by the relative movement of the two clamps. To a certain extent, it can meet the welding requirements of some conventional cold stamping molds. For example, for a mold part with a regular plane, it can be placed between two clamps. By adjusting the spacing between the clamps and applying appropriate clamping force, it can remain stable during the welding process, avoiding displacement due to vibration or external force generated by the welding operation, thereby ensuring the accuracy and quality of the welding.

[0004] However, this type of fixture has obvious limitations. When encountering a cold pressing mold for circular parts, due to the shape and structural characteristics of the clamp, it is difficult to achieve good fit and stable clamping with the circular parts. The clamp and the circular parts can often only form point contact or line contact, and cannot provide uniform clamping force, which can easily cause the circular parts to rotate or shift during the welding process, affecting the welding quality. In order to weld the circular parts, it is necessary to replace the clamp specifically used to clamp the circular parts. This operation of replacing the clamp not only increases the complexity and time cost of the workflow, but also the frequent replacement of the clamp may introduce new positioning errors, further affecting the accuracy and consistency of the welding, and reducing the work efficiency and quality stability of the cold pressing mold welding. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a welding fixture for cold pressing molds, which effectively solves the current problem of inconvenience in stably clamping mold parts of different shapes.

[0006] To achieve the above object, the present invention provides the following technical solution: a welding fixture for a cold pressing mold, comprising a bottom frame, a clamping mechanism provided on the bottom frame, and a shielding mechanism provided on the top of the bottom frame;

[0007] The clamping mechanism includes two inner rods symmetrically fixed to the inner side of the bottom frame, two inner plates symmetrically and movably sleeved between the two inner rods, a placing table located between the two inner plates fixedly sleeved between the two inner rods, the tops of the two inner plates are rotatably connected to support shafts, the tops of the two support shafts are fixedly connected to vertical plates, the sides of the two vertical plates close to each other are fixedly connected to square plates, and the sides of the two vertical plates away from each other are fixedly connected to arc plates, a U-shaped plate is fixedly installed on the bottom of the bottom frame, a driving motor is fixedly installed on the inner side of the U-shaped plate, a bidirectional screw rod is fixedly connected to the driving motor, and the end of the bidirectional screw rod away from the driving motor is rotatably connected to the U-shaped plate, the outer side of the bidirectional screw rod is symmetrically threaded with two nuts, the two inner plates are respectively fixed to the tops of the two nuts, and a protective component is provided on the outer side of the bidirectional screw rod.

[0008] Preferably, the top of the inner plate is fixedly connected to a top frame, an L-shaped round rod is fixedly connected between the top frame and the inner plate, an L-shaped plate is movably sleeved on the outer side of the L-shaped round rod, a toothed plate is fixedly connected to the L-shaped plate, a gear is fixedly installed on the outer side of the support shaft, the gear is meshed with the toothed plate, the outer side of the L-shaped plate is fixedly connected to a limiting block, a limiting groove is provided on the outer side of the inner plate, and the L-shaped plate is slidably connected to the limiting groove.

[0009] Preferably, the bottom of the inner plate is fixedly connected to a sliding rod, the outer side of the sliding rod is movably sleeved with a slide plate, the top of the slide plate is fixedly connected to a lifting plate, the lifting plate passes through the inner plate and is movably connected to the inner plate, and the top frame is sleeved on the outer side of the lifting plate, the outer side of the lifting plate is rotatably connected to a movable rod, and the bottom end of the movable rod is rotatably connected to the top of the L-shaped plate.

[0010] Preferably, the bottom end of the slide rod is fixedly connected to a bottom block, the outer side of the slide rod is fixedly sleeved with an abutment ring, and the slide plate abuts against the bottom of the abutment ring.

[0011] Preferably, a support block is fixedly installed on the inner side of the U-shaped plate, a bidirectional screw rod passes through the support block and does not contact the support block, a cylinder is fixedly connected to the top of the support block, a sleeve plate is fixedly connected to the output end of the cylinder, a cross plate is fixedly sleeved on the inner side of the sleeve plate, and the slide plate is movably sleeved on the outer side of the cross plate.

[0012] Preferably, the protective component includes two corrugated hoses 1, the two corrugated hoses 1 are respectively fixed between two nuts and the U-shaped plate, and a corrugated hose 2 is fixedly connected between the two nuts and the support block. The two corrugated hoses 1 and the corrugated hose 2 are both located on the outside of the bidirectional screw rod, and the drive motor is located on the inside of one of the corrugated hoses 1. A plurality of heat dissipation holes are provided at equal angles on the U-shaped plate, all of which are located between the drive motor and the corresponding corrugated hose 1.

[0013] Preferably, the shielding mechanism includes two top plates symmetrically fixed to the top of the bottom frame, and an L-shaped round rod is fixedly connected between the side of the two top plates close to each other and the bottom frame. The outer sides of the two L-shaped round rods are movably sleeved with a translation plate, and the tops of the two translation plates are fixedly connected with a semicircular protective cover. A spring is fixedly connected between the translation plate and the top plate, and the spring is sleeved on the outer side of the L-shaped round rod.

[0014] Preferably, the bottom of the semicircular protective cover is symmetrically fixedly connected to two support columns, and the bottom ends of the two support columns are provided with support balls located on the top of the bottom frame.

[0015] Preferably, a side of the inner plate close to the top plate is fixedly connected to an abutment frame, and the abutment frame abuts against a side of the translation plate away from the top plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention facilitates the rotation of the vertical plate to switch between the square plate and the arc plate through the cooperation between the cylinder, the sleeve plate, the cross plate, the slide plate, the slide rod, the bottom block, the abutment ring, the lifting plate, the movable rod, the L-shaped plate, the L-shaped round rod, the tooth plate, the gear and the support shaft, and facilitates the two square plates or the two arc plates to approach each other through the cooperation between the driving motor, the bidirectional screw rod, the nut, the inner plate and the inner rod, thereby facilitating the stable clamping of mold parts of different shapes.

[0018] 2. The invention provides a plurality of heat dissipation holes to facilitate heat dissipation of the driving motor, and through the cooperation between the corrugated hose and the support block, can shield and protect the bidirectional screw rod, preventing the spatter generated by welding from adhering to the threaded surface of the bidirectional screw rod, thereby ensuring that the bidirectional screw rod can transmit normally.

[0019] 3. The invention achieves this by coordinating the abutment frame, the translation plate, the second L-shaped round rod, the spring, the top plate, the semicircular protective cover, the support column and the support ball. When the two inner plates are brought close to each other to clamp the mold component, the two semicircular protective covers can be brought close to each other and fitted together, thereby facilitating shielding the welding area and thus blocking light radiation and splashes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0021] In the attached figure:

[0022] Figure 1 This is a schematic structural diagram of a welding fixture for a cold pressing die according to the present invention;

[0023] Figure 2 This is a schematic structural diagram of the clamping mechanism of the present invention;

[0024] Figure 3 This is a schematic diagram of the inner plate structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the support shaft structure of the present invention;

[0026] Figure 5 Schematic diagram of the nut structure of the present invention;

[0027] Figure 6 It is a schematic structural diagram of the protection mechanism of the present invention.

[0028] In the figure: 1. bottom frame; 2. clamping mechanism; 201. inner rod; 202. U-shaped plate; 203. heat dissipation hole; 204. corrugated hose 1; 205. corrugated hose 2; 206. support block; 207. cylinder; 208. nut; 209. horizontal plate; 2010. inner plate; 2011. sleeve plate; 2012. placement table; 2013. lifting plate; 2014. square plate; 2015. vertical plate; 2016. curved plate; 2017. support shaft; 2018. limit groove; 2019. slide plate; 2020 , bottom block; 2021, abutment ring; 2022, sliding rod; 2023, tooth plate; 2024, limit block; 2025, L-shaped plate; 2026, top frame; 2027, movable rod; 2028, L-shaped round rod one; 2029, gear; 2030, drive motor; 2031, two-way screw; 3, shielding mechanism; 301, top plate; 302, spring; 303, L-shaped round rod two; 304, semicircular protective cover; 305, abutment frame; 306, support column; 307, support ball; 308, translation plate. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] Embodiment 1, by Figures 1-6 The present invention relates to a welding fixture for a cold pressing mold, comprising a bottom frame 1, a clamping mechanism 2 is provided on the bottom frame 1, and a shielding mechanism 3 is provided on the top of the bottom frame 1.

[0031] Embodiment 2, on the basis of embodiment 1, the clamping mechanism 2 includes two inner rods 201 symmetrically fixed to the inner side of the bottom frame 1, two inner plates 2010 are symmetrically and movably sleeved between the two inner rods 201, a placement table 2012 located between the two inner plates 2010 is fixedly sleeved between the two inner rods 201, the tops of the two inner plates 2010 are rotatably connected to support shafts 2017, the tops of the two support shafts 2017 are fixedly connected to vertical plates 2015, the sides of the two vertical plates 2015 close to each other are fixedly connected to square plates 2014, the sides of the two vertical plates 2015 away from each other are fixedly connected to arc plates 2016, the bottom of the bottom frame 1 is fixedly installed with a U-shaped plate 202, the U-shaped plate 20 2 is fixedly installed on the inner side of the drive motor 2030, and a bidirectional screw rod 2031 is fixedly connected to the drive motor 2030. The end of the bidirectional screw rod 2031 away from the drive motor 2030 is rotatably connected to the U-shaped plate 202. The outer side of the bidirectional screw rod 2031 is symmetrically threaded with two screw nuts 208. The two inner plates 2010 are respectively fixed to the top of the two screw nuts 208. A protective component is provided on the outer side of the bidirectional screw rod 2031. The top of the inner plate 2010 is fixedly connected to the top frame 2026. An L-shaped round rod 2028 is fixedly connected between the top frame 2026 and the inner plate 2010. The outer side of the L-shaped round rod 2028 is movably sleeved with an L-shaped plate 2025. A gear is fixedly connected to the L-shaped plate 2025. Plate 2023, the outer side of the support shaft 2017 is fixedly installed with a gear 2029, the gear 2029 is meshed with the gear plate 2023, the outer side of the L-shaped plate 2025 is fixedly connected to the limit block 2024, the outer side of the inner plate 2010 is provided with a limit groove 2018, the L-shaped plate 2025 is slidably connected to the limit groove 2018, the bottom of the inner plate 2010 is fixedly connected with a slide bar 2022, the outer side of the slide bar 2022 is movably sleeved with a slide plate 2019, the top of the slide plate 2019 is fixedly connected with a lifting plate 2013, the lifting plate 2013 passes through the inner plate 2010 and is movably connected to the inner plate 2010, and the top frame 2026 is sleeved on the outer side of the lifting plate 2013, and the outer side of the lifting plate 2013 rotates The movable rod 2027 is rotatably connected to the top of the L-shaped plate 2025. The bottom end of the sliding rod 2022 is fixedly connected to the bottom block 2020. The outer side of the sliding rod 2022 is fixedly sleeved with an abutment ring 2021. The slide plate 2019 abuts against the bottom of the abutment ring 2021. The inner side of the U-shaped plate 202 is fixedly installed with a support block 206. The bidirectional screw rod 2031 passes through the support block 206 and does not contact the support block 206. The top of the support block 206 is fixedly connected to the cylinder 207. The output end of the cylinder 207 is fixedly connected to a sleeve plate 2011. The inner side of the sleeve plate 2011 is fixedly sleeved with a horizontal plate 209. The slide plate 2019 is movably sleeved on the outer side of the horizontal plate 209.

[0032] First, start the drive motor 2030 to drive the bidirectional screw rod 2031 to rotate, and drive the two inner plates 2010 to slide along the two inner rods 201 through the two screw nuts 208, and drive the two vertical plates 2015 to move through the two support shafts 2017. At the same time, the two square plates 2014 approach each other to clamp the mold parts with regular planes. When the cylinder 207 is started, the cross plate 209 is driven downward by the sleeve plate 2011, and the slide plate 2019 is driven to slide downward along the slide rod 2022. At the same time, the lifting plate 2013 is lowered, and then the L is driven by the movable rod 2027. The mold plate 2025 slides along the L-shaped round rod 2028, and the limit block 2024 slides along the limit groove 2018 to ensure the stability of the L-shaped plate 2025 when moving. Since the tooth plate 2023 is engaged with the gear 2029, the support shaft 2017 is driven to rotate, and the vertical plate 2015 is driven to rotate until the slide plate 2019 abuts against the bottom block 2020. At this time, the square plate 2014 and the arc plate 2016 are switched. When the two inner plates 2010 approach each other, the two arc plates 2016 can be driven to move to clamp the circular parts, and finally the mold parts of different shapes are stably clamped.

[0033] Example 3, based on Example 1, the protective assembly includes two corrugated hoses 204, the two corrugated hoses 204 are respectively fixed between two screw nuts 208 and the U-shaped plate 202, and the two screw nuts 208 and the support block 206 are fixedly connected with a corrugated hose 205, the two corrugated hoses 204 and the corrugated hose 205 are both located on the outside of the bidirectional screw rod 2031, the drive motor 2030 is located on the inside of one of the corrugated hoses 204, and a plurality of heat dissipation holes 203 are provided at equal angles on the U-shaped plate 202, all of which are located between the drive motor 2030 and the corresponding corrugated hose 204;

[0034] When the driving motor 2030 is started, heat can be dissipated through the heat dissipation holes 203 to ensure the normal movement of the driving motor 2030. When the bidirectional screw rod 2031 rotates and drives the two nuts 208 to move, it also drives the two corrugated hoses 1 204 and the two corrugated hoses 205 to expand and contract, so that the two corrugated hoses 1 204 and the two corrugated hoses 205 are always located on the outside of the bidirectional screw rod 2031, thereby achieving shielding and protection for the bidirectional screw rod 2031, preventing spatter generated by welding from adhering to the threaded surface of the bidirectional screw rod 2031, and finally ensuring that the bidirectional screw rod 2031 can transmit normally.

[0035] The fourth embodiment, on the basis of the first embodiment, the shielding mechanism 3 includes two top plates 301 symmetrically fixed to the top of the bottom frame 1, and an L-shaped round rod 2 303 is fixedly connected between the side of the two top plates 301 close to each other and the bottom frame 1, and a translation plate 308 is movably sleeved on the outer side of the two L-shaped round rods 303, and the top of the two translation plates 308 is fixedly connected to a semicircular protective cover 304, and a spring 302 is fixedly connected between the translation plate 308 and the top plate 301, and the spring 302 is sleeved on the outer side of the L-shaped round rod 2 303. The bottom of the semicircular protective cover 304 is symmetrically fixedly connected to two support columns 306, and the bottom ends of the two support columns 306 are provided with support balls 307 located at the top of the bottom frame 1. When the semicircular protective cover 304 moves, it drives the two support balls 307 to move on the bottom frame When the two inner plates 2010 are close to each other to clamp the mold parts, the two abutment frames 305 are respectively abutted with the two translation plates 308, and the two springs 302 are in a compressed state. When the two inner plates 2010 are close to each other to clamp the mold parts, the two abutment frames 305 are driven to move and approach each other. At the same time, the two springs 302 are reset to drive the two translation plates 308 to slide along the two L-shaped round rods 303 respectively. At the same time, the two semicircular protective covers 304 move and fit together to achieve shielding of the welding area, and finally block light radiation and splashes.

Claims

1. A welding fixture for a cold pressing mold, comprising a bottom frame (1), characterized in that: The bottom frame (1) is provided with a clamping mechanism (2), and the top of the bottom frame (1) is provided with a shielding mechanism (3); The clamping mechanism (2) comprises two inner rods (201) symmetrically fixed to the inner side of the bottom frame (1); two inner plates (2010) are symmetrically and movably sleeved between the two inner rods (201); a placement platform (2012) located between the two inner plates (2010) is fixedly sleeved between the two inner rods (201); the tops of the two inner plates (2010) are rotatably connected to support shafts (217); the tops of the two support shafts (2017) are fixedly connected to vertical plates (2015); the sides of the two vertical plates (2015) that are close to each other are fixedly connected to square plates (214); the sides of the two vertical plates (2015) that are far away from each other are fixedly connected to square plates (214). The sides are fixedly connected with an arc plate (2016), the bottom of the bottom frame (1) is fixedly installed with a U-shaped plate (202), the inner side of the U-shaped plate (202) is fixedly installed with a driving motor (2030), the driving motor (2030) is fixedly connected with a bidirectional screw rod (2031), one end of the bidirectional screw rod (2031) away from the driving motor (2030) is rotatably connected to the U-shaped plate (202), the outer side of the bidirectional screw rod (2031) is symmetrically threaded with two screw nuts (208), the two inner plates (2010) are respectively fixed to the top of the two screw nuts (208), and the outer side of the bidirectional screw rod (2031) is provided with a protective component.

2. A welding fixture for a cold pressing mold according to claim 1, characterized in that: The top of the inner plate (2010) is fixedly connected to a top frame (2026), an L-shaped round rod (2028) is fixedly connected between the top frame (2026) and the inner plate (2010), an L-shaped plate (2025) is movably sleeved on the outer side of the L-shaped round rod (2028), a toothed plate (2023) is fixedly connected to the L-shaped plate (2025), a gear (2029) is fixedly installed on the outer side of the support shaft (2017), the gear (2029) is meshedly connected to the toothed plate (2023), a limiting block (2024) is fixedly connected to the outer side of the L-shaped plate (2025), a limiting groove (2018) is provided on the outer side of the inner plate (2010), and the L-shaped plate (2025) is slidably connected to the limiting groove (2018).

3. The welding fixture for cold pressing mold according to claim 1, characterized in that: The bottom of the inner plate (2010) is fixedly connected to a sliding rod (2022), the outer side of the sliding rod (2022) is movably sleeved with a slide plate (2019), the top of the slide plate (2019) is fixedly connected to a lifting plate (2013), the lifting plate (2013) passes through the inner plate (2010) and is movably connected to the inner plate (2010), and the top frame (2026) is sleeved on the outer side of the lifting plate (2013), the outer side of the lifting plate (2013) is rotatably connected to a movable rod (2027), and the bottom end of the movable rod (2027) is rotatably connected to the top of the L-shaped plate (2025).

4. A welding fixture for a cold pressing mold according to claim 3, characterized in that: The bottom end of the slide bar (2022) is fixedly connected to a bottom block (2020), the outer side of the slide bar (2022) is fixedly sleeved with an abutment ring (2021), and the slide plate (2019) abuts against the bottom of the abutment ring (2021).

5. The welding fixture for cold pressing mold according to claim 1, characterized in that: A support block (206) is fixedly installed on the inner side of the U-shaped plate (202), a bidirectional screw rod (2031) passes through the support block (206) and does not contact the support block (206), a cylinder (207) is fixedly connected to the top of the support block (206), a sleeve plate (2011) is fixedly connected to the output end of the cylinder (207), a transverse plate (209) is fixedly sleeved on the inner side of the sleeve plate (2011), and a slide plate (219) is movably sleeved on the outer side of the transverse plate (209).

6. The welding fixture for cold pressing mold according to claim 1, characterized in that: The protective component comprises two corrugated hoses (204), the two corrugated hoses (204) are respectively fixed between two screw nuts (208) and the U-shaped plate (202), and the two corrugated hoses (205) are fixedly connected between the two screw nuts (208) and the support block (206), the two corrugated hoses (204) and the corrugated hoses (205) are both located outside the bidirectional screw rod (2031), the driving motor (2030) is located inside one of the corrugated hoses (204), and a plurality of heat dissipation holes (203) are provided on the U-shaped plate (202) at equal angles, all located between the driving motor (2030) and the corresponding corrugated hoses (204).

7. The welding fixture for cold pressing mold according to claim 1, characterized in that: The shielding mechanism (3) comprises two top plates (301) symmetrically fixed to the top of the bottom frame (1); a second L-shaped round rod (303) is fixedly connected between the sides of the two top plates (301) close to each other and the bottom frame (1); a translation plate (308) is movably sleeved on the outer sides of the two second L-shaped round rods (303); a semicircular protective cover (304) is fixedly connected to the top of the two translation plates (308); a spring (302) is fixedly connected between the translation plate (308) and the top plate (301); and the spring (302) is sleeved on the outer sides of the second L-shaped round rod (303).

8. The welding fixture for cold pressing mold according to claim 7, characterized in that: Two support columns (306) are symmetrically fixedly connected to the bottom of the semicircular protective cover (304), and the bottom ends of the two support columns (306) are each provided with a support ball (307) located on the top of the bottom frame (1).

9. The welding fixture for cold pressing mold according to claim 1, characterized in that: A side of the inner plate (2010) close to the top plate (301) is fixedly connected to an abutment frame (305), and the abutment frame (305) abuts against a side of the translation plate (308) away from the top plate (301).

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