A refrigerator door liner punching and trimming die
By designing a refrigerator door drum punching edge cutting die containing clamp strips and edge press cylinders, the problem of difficult cutting dies in the prior art is difficult to cut neatly and imprecisely punching the edge of the refrigerator door tube is realized. The neat edge cutting and precision punching ensure the stability and cleanliness of the mold.
Patent Information
- Application Number
- CN201810508018.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2018-05-24
- Publication Date
- 2024-12-06
- Estimated Expiration
- 2038-05-24
AI Technical Summary
The existing edge cutting molds are difficult to cut the fridge door inner edges at once, and the punching is not accurate enough.
A refrigerator door drum punching edge cutting mold is designed including a lower template, an upper template and a middle template. The edge edge of the refrigerator door tube is clamped with a clamp strip on the rotary shaft, and multiple clamps on the rotary shaft are driven by a press-side cylinder. The material strips are flipped, combining the upper and lower cutter strips and elastic parts to form a shear blade to ensure neat cutting edges and accurate punching.
The neat edge cutting and punching accuracy of the edges of the refrigerator door inner liner is achieved. The clamp strip is simple, stable and reliable in structure, and the movement is fast. The mold is clean and safe through the designed waste box and limit column.
Smart Images
Figure CN108515578B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a trimming die, in particular to a refrigerator door liner punching and trimming die. Background Art
[0002] The refrigerator door liner is usually formed by a polymer material mold. After the refrigerator door liner is formed, scraps are usually left on the edge to facilitate subsequent processing to ensure high dimensional accuracy of the refrigerator door liner after processing. After the refrigerator door liner is formed, a trimming die is usually used to trim and punch the refrigerator door liner. It is difficult to cut the edge of the existing trimming die neatly in one go. Summary of the invention
[0003] In view of the deficiencies in the prior art, the present invention aims to provide a refrigerator door liner punching and trimming die.
[0004] The technical solution adopted by the present invention to solve its technical problems is: a refrigerator door liner punching and trimming die, comprising a lower die plate, an upper die plate arranged above the lower die plate, a middle die plate arranged between the lower die plate and the upper die plate, a lower die rib plate arranged between the middle die plate and the lower die plate, a lower knife strip extending along the edge of the refrigerator door liner to be cut is arranged on the top of the middle die plate, an upper knife seat is arranged at the bottom of the upper die plate, the upper knife seat is provided with a pressure strip facing the lower knife strip, a yield groove is arranged at the top of the lower knife strip for accommodating the protrusion of the edge of the door liner, a protrusion is arranged at the bottom of the pressure strip that extends into the yield groove when the mold is closed, a vertical sliding pin is connected between the pressure strip and the upper knife seat, an elastic member is arranged between the pressure strip and the upper knife seat, the bottom of the elastic member abuts against the pressure strip, and the top of the elastic member abuts against the upper The knife seat, that is, the elastic member applies a downward elastic force to the pressure strip, and an upper knife strip is provided on the upper knife seat on the outside of the pressure strip, and the upper knife strip and the lower knife strip form a shearing blade in the mold closing state, that is, the inner side of the upper knife strip and the outer side of the lower knife strip are in contact with each other when the mold is closed; a pressure edge seat is provided on the outside of the upper knife seat, and a rotating shaft is horizontally rotatably connected to the pressure edge seat, and a control arm is provided on the rotating shaft, and the rotating shaft extends along the length direction of the upper knife strip; a pressure edge cylinder is rotatably connected to the upper template, and the end of the telescopic rod of the pressure edge cylinder is rotatably connected to the control arm, and a clamping strip is provided on the rotating shaft, one end of the clamping strip is connected to the rotating shaft, and the other end of the clamping strip is located directly below the pressure edge seat, a punching needle is provided at the bottom of the upper template, and a support platform facing the punching needle is provided at the top of the middle template.
[0005] In the above design, the clamping strips on the rotating shaft are used to clamp the edge of the formed refrigerator door liner to ensure that sufficient tension is formed on the edge of the refrigerator door liner. When cutting the edge, the edge of the refrigerator door liner is more neat and the punching is more precise. The clamping strips use a pressure cylinder to drive the rotating shaft, and the rotation of the rotating shaft drives multiple clamping strips on the rotating shaft to flip. The structure is simple, stable and reliable, and the action is fast.
[0006] As a further improvement of the present design, the clamping strip is L-shaped, and one side of the clamping strip is located below the edge pressing seat. The L-shaped clamping strip can better clamp the edge of the refrigerator door liner, and the edge pressing cylinder has a short stroke to prevent interference with the clamping strip when loading the refrigerator door liner.
[0007] As a further improvement of the present design, a waste box with an upward opening is provided on the top of the lower mold plate, and the opening of the waste box is located below the upper blade. The waste box helps to collect the fallen waste to ensure the cleanliness of the entire mold.
[0008] As a further improvement of the present design, an upper limit column is provided at the bottom of the upper template, a lower limit column is provided on the middle template directly below the upper limit column, a sliding guide column is provided at the bottom of the upper template, and a guide sleeve that cooperates with the sliding guide column is provided on the middle template. The upper limit column and the lower limit column prevent the upper and lower blades from being damaged, ensure the size of the punching hole, and prevent the punching needle from being damaged.
[0009] As a further improvement of the present design, the punching needle comprises a punching needle seat arranged at the bottom of the upper template, a punching needle body inserted into the punching needle seat and lifted along the punching needle seat, and a secondary punching spring exerting a downward elastic force on the punching needle body is provided on the top of the punching needle body. The secondary punching spring prevents the punching needle from tearing the punching edge due to excessive speed during trimming.
[0010] As a further improvement of the present design, the elastic member is a rectangular spring, and the rectangular spring is sleeved on the sliding pin, so as to have good guiding performance and long service life.
[0011] The beneficial effects of the present invention are as follows: the present invention utilizes the clamping strips on the rotating shaft to clamp the edge of the refrigerator door liner after forming, thereby ensuring that sufficient tension is formed on the edge of the refrigerator door liner. When trimming, the edge of the refrigerator door liner is more neat and the punching is more precise. The clamping strips utilize an edge pressing cylinder to drive the rotating shaft, and the rotation of the rotating shaft drives multiple clamping strips on the rotating shaft to flip. The structure is simple, stable and reliable, and the action is fast. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0013] Figure 1 It is an overall cross-sectional schematic diagram of the present invention.
[0014] Figure 2 It is a schematic bottom view of the upper mold of the present invention.
[0015] Figure 3 It is a partially enlarged schematic diagram of the trimming mechanism of the present invention.
[0016] In the figure, 1. lower template, 2. waste box, 3. lower mold rib plate, 4. lower knife strip, 5. make way groove, 6. middle template, 7. lower limit column, 8. upper limit column, 9. edge pressing cylinder, 10. edge pressing seat, 11. upper knife seat, 12. pressure strip, 13. support table, 14. upper template, 15. protrusion, 16. sliding guide column, 17. guide sleeve, 18. sliding pin, 19. elastic part, 20. upper knife strip, 21. rotating shaft, 22. operating arm, 23. clamping strip, 24. punch body, 25. punch seat, 26. secondary punching spring. DETAILED DESCRIPTION
[0017] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, wherein the illustrative embodiments and descriptions are only used to explain the present invention but are not intended to limit the present invention.
[0018] Embodiment: A refrigerator door liner punching and trimming die, comprising a lower template 1, an upper template 14 arranged above the lower template 1, a middle template 6 is arranged between the lower template 1 and the upper template 14, a lower mold rib plate 3 is arranged between the middle template 6 and the lower template 1, a lower knife strip 4 extending along the edge of the refrigerator door liner to be cut is arranged on the top of the middle template 6, an upper knife seat 11 is arranged at the bottom of the upper template 14, the upper knife seat 11 is provided with a pressure strip 12 facing the lower knife strip 4, a clearance groove 5 is arranged on the top of the lower knife strip 4 for accommodating a protrusion 15 on the edge of the door liner, a protrusion 15 is arranged at the bottom of the pressure strip 12 for extending into the clearance groove 5 when the mold is closed, a vertical sliding pin 18 is connected between the pressure strip 12 and the upper knife seat 11, an elastic member 19 is arranged between the pressure strip 12 and the upper knife seat 11, the bottom of the elastic member 19 abuts against the pressure strip 12, and the top of the elastic member 19 abuts against the upper knife seat 11, that is, the elastic member 1 9 exerts a downward elastic force on the pressure strip 12, and an upper blade 20 is provided on the upper knife seat 11 outside the pressure strip 12, and the upper blade 20 and the lower blade 4 form a shearing blade in the mold closing state, that is, the inner side of the upper blade 20 and the outer side of the lower blade 4 are in contact with each other during mold closing, and a pressure edge seat 10 is provided on the outer side of the upper knife seat 11, and a rotating shaft 21 is horizontally rotatably connected to the pressure edge seat 10, and a manipulation arm 22 is provided on the rotating shaft 21, and the rotating shaft 21 is arranged along the The upper knife strip 20 extends in the length direction, and the upper template 14 is rotatably connected to the edge holding cylinder 9. The end of the telescopic rod of the edge holding cylinder 9 is rotatably connected to the operating arm 22. A clamping strip 23 is provided on the rotating shaft 21. One end of the clamping strip 23 is connected to the rotating shaft 21, and the other end of the clamping strip 23 is located directly below the edge holding seat 10. A punching needle is provided at the bottom of the upper template 14, and a support platform 13 facing the punching needle is provided at the top of the middle template 6.
[0019] In the above design, the clamping strips 23 on the rotating shaft 21 are used to clamp the edge of the formed refrigerator door liner to ensure that sufficient tension is formed on the edge of the refrigerator door liner. When cutting the edge, the edge of the refrigerator door liner is more neat and the punching is more accurate. The clamping strips 23 use the edge pressing cylinder 9 to drive the rotating shaft 21. The rotation of the rotating shaft 21 drives multiple clamping strips 23 on the rotating shaft 21 to flip. The structure is simple, stable and reliable, and the action is fast.
[0020] As a further improvement of the present design, the clamping strip 23 is L-shaped, and one side of the clamping strip 23 is located below the edge pressing seat 10. The L-shaped clamping strip 23 can better clamp the edge of the refrigerator door liner. The edge pressing cylinder 9 has a short stroke to prevent interference with the clamping strip 23 when loading the refrigerator door liner.
[0021] As a further improvement of the present design, a waste box 2 with an opening facing upward is provided on the top of the lower mold plate 1, and the opening of the waste box 2 is located below the upper blade 20. The waste box 2 helps to collect the fallen waste to ensure the cleanliness of the entire mold.
[0022] As a further improvement of the present design, an upper limit column 8 is provided at the bottom of the upper template 14, a lower limit column 7 is provided on the middle template 6 directly below the upper limit column 8, a sliding guide column 16 is provided at the bottom of the upper template 14, and a guide sleeve 17 is provided on the middle template 6 to cooperate with the sliding guide column 16. The upper limit column 8 and the lower limit column 7 prevent the upper blade 20 and the lower blade 4 from being damaged, ensure the size of the punching hole, and prevent the punching needle from being damaged.
[0023] As a further improvement of the present design, the punching needle comprises a punching needle seat 25 arranged at the bottom of the upper template 14, a punching needle body 24 inserted into the punching needle seat 25 and lifted and lowered along the punching needle seat 25, and a secondary punching spring 26 exerting a downward elastic force on the punching needle body 24 is provided on the top of the punching needle body 24. The secondary punching spring 26 prevents the punching needle from tearing the edge of the punching hole due to excessive speed during trimming.
[0024] As a further improvement of the present design, the elastic member 19 is a rectangular spring, which is sleeved on the sliding pin 18 and has good guiding performance and long service life.
[0025] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A refrigerator door liner punching and trimming die, comprising a lower die plate and an upper die plate arranged above the lower die plate, characterized in that: The top of the middle template is provided with a lower mold rib plate, and the top of the middle template is provided with a lower knife strip extending along the edge of the refrigerator door to be cut, and the bottom of the upper template is provided with an upper knife seat, and the upper knife seat is provided with a pressure strip facing the lower knife strip, and the top of the lower knife strip is provided with a yield groove for accommodating the protrusion of the edge of the door liner when the mold is closed. The bottom of the pressure strip is provided with a protrusion that extends into the yield groove when the mold is closed. A vertical sliding pin is connected between the pressure strip and the upper knife seat, and an elastic member is provided between the pressure strip and the upper knife seat, and the bottom of the elastic member abuts the pressure strip, and the top of the elastic member abuts the upper knife seat, that is, the elastic member applies a downward elastic force to the pressure strip, and an upper knife strip is provided on the upper knife seat on the outer side of the pressure strip, and the upper knife strip and the lower knife strip form a shearing edge in the mold closing state, that is, the inner side of the upper knife strip is in contact with the outer side of the lower knife strip when the mold is closed, and the outer side of the upper knife seat The top end of the push rod is connected with the push rod, and the bottom end of the push rod is connected with the push rod, and the other end of the push rod is connected with the push rod.
2. A refrigerator door liner punching and trimming die according to claim 1, characterized in that: The punching needle comprises a punching needle seat arranged at the bottom of the upper template, a punching needle body inserted into the punching needle seat and lifted along the punching needle seat, and a secondary punching spring exerting downward elastic force on the punching needle body is provided on the top of the punching needle body.
3. A refrigerator door liner punching and trimming die according to claim 1, characterized in that: The elastic member is a rectangular spring, and the rectangular spring is sleeved on the sliding pin.