A condenser pre-punching pin structure

Abstract

The utility model discloses a condenser pre-punching ejector pin structure, which relates to the field of stamping dies, including a lower stamping die, an upper stamping die is arranged on the lower stamping die, a plurality of movable grooves are opened on the lower stamping die, a connecting plate is slidably installed in the movable groove, a plurality of fixed guide rods are slidably installed on the connecting plate, and the two ends of the fixed guide rods are respectively fixedly installed on the inner walls on both sides of the movable groove. The utility model, through the arrangement of structures such as connecting plates and threaded rods, the upper stamping die moves downward and squeezes the extrusion rods in the process of stamping the condenser side plate, so that the ejector pin is lowered into the lower stamping die, and when the upper stamping die rises, the ejector pin is ejected and the side plate is demoulded under the action of the ejector spring, and the height of the ejector pin can be adjusted by turning the knob, so that the ejection degree of the ejector pin can be adjusted according to the material removal situation of the side plate, and compensation can be made according to the wear degree of the ejector pin, and the adjustment process is simple and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a condenser pre-punching ejector pin structure. Background Art

[0002] Pre-stamping refers to the pre-stamping of a component or structure, which is usually carried out before product manufacturing or assembly. Its main purpose is to ensure that the subsequent processing or assembly process can proceed smoothly.

[0003] In the prior art, when pre-punching the side plate of the condenser, the upper mold of the punching machine will descend and merge with the lower mold. During the process, the condenser side plate will be punched into a suitable shape. In order to prevent the side plate from getting stuck on the lower mold, a push pin is usually used to push the side plate out of the lower mold. However, the push pin will generate friction with the side plate when ejecting. Long-term use will cause wear of the push pin, resulting in a decrease in its pushing force, making it difficult for the stamped side plate to fall off. Therefore, a condenser pre-punching push pin structure is needed to meet people's needs. Utility Model Content

[0004] The utility model aims to provide a condenser pre-punching ejector pin structure to solve the problem in the above-mentioned background technology that the ejector pin will generate friction with the side plate when ejecting, which will cause wear of the ejector pin over a long period of time, resulting in reduced ejection force and making it difficult for the stamped side plate to fall off.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a condenser pre-punching ejector pin structure, comprising a lower punching die, an upper punching die is arranged on the lower punching die, a plurality of movable grooves are opened on the lower punching die, a connecting plate is slidably installed in the movable groove, a plurality of fixed guide rods are slidably installed on the connecting plate, the two ends of the fixed guide rods are respectively fixedly installed on the inner walls of the two sides of the movable groove, an ejection spring is slidably sleeved on the fixed guide rod, one end of the ejection spring is fixedly installed on the inner wall of the movable groove, and the other end of the ejection spring is fixedly installed on one side of the connecting plate , one end of two extrusion rods is fixedly installed on the top side of the connecting plate, and the other ends of the two extrusion rods pass through the lower stamping die. Two threaded rods are slidably installed on the connecting plate, and the inner walls of the two threaded rods are movably installed with ejector pins, and one end of the two ejector pins passes through the lower stamping die. Two rotating shafts are rotatably installed on the connecting plate, and knobs and first bevel gears are fixedly installed at both ends of the two rotating shafts. Second bevel gears are threadedly sleeved on the two threaded rods, and the two second bevel gears are rotatably installed on the connecting plate, and the two second bevel gears are respectively meshed with the two first bevel gears.

[0006] Preferably, a plurality of fixing seats are fixedly installed on one side of the threaded rod, a same fixed shaft is fixedly installed on two fixing seats located on the same side, a movable rod is rotatably installed on the fixed shaft, an extrusion block and an arc-shaped plug block are fixedly installed on both sides of the movable rod respectively, a plurality of arc-shaped slots are provided on the top pin, the arc-shaped plug block is movably installed in a corresponding arc-shaped slot, a movable slide groove and a loose groove are provided on the inner wall of the connecting plate, the movable slide groove is communicated with the loose groove, the threaded rod is slidably installed in the movable slide groove, and the extrusion block contacts the inner wall of the movable slide groove.

[0007] Preferably, a rotating hole is opened on the inner wall of the movable rod, the fixed shaft is rotatably installed in the rotating hole, an auxiliary torsion spring is fixedly sleeved on the fixed shaft, one end of the auxiliary torsion spring is fixedly installed on the inner wall of the rotating hole, and the other end of the auxiliary torsion spring is fixedly installed on the fixed shaft.

[0008] Preferably, a positioning groove is formed on the inner wall of the ejector pin, a positioning block is movably installed in the positioning groove, and the positioning block is fixedly installed on the inner wall of the threaded rod.

[0009] Preferably, four fixing rods are fixedly mounted on the bottom side of the connecting plate, and the same guide slide plate is slidably mounted on two fixing rods on the same side, and the two guide slide plates are respectively fixedly mounted on the bottom sides of the two threaded rods.

[0010] Preferably, the inner wall of the connecting plate is provided with two annular grooves, and limiting swivels are rotatably installed in the two annular grooves, and the two limiting swivels are respectively fixedly installed on the bottom sides of the two second bevel gears.

[0011] Preferably, a threaded hole is formed on the inner wall of the second bevel gear, and the threaded rod is threadedly installed in the threaded hole.

[0012] The beneficial effects of the utility model are:

[0013] In the utility model, by setting structures such as connecting plates and threaded rods, the upper stamping die moves downward and squeezes the extrusion rod during the process of stamping the condenser side plate, so that the ejector pin drops into the lower stamping die. When the upper stamping die rises, the ejector pin is ejected and the side plate is demoulded under the action of the ejector spring, and the height of the ejector pin can be adjusted by turning the knob, so that the ejection degree of the ejector pin can be adjusted according to the stripping situation of the side plate, and compensation can be made according to the degree of wear of the ejector pin. The adjustment process is simple and quick.

[0014] In the utility model, through the arrangement of structures such as the movable rod and the arc-shaped insert block, the push pin can be ejected from the lower stamping die by continuously turning the knob to the bottom, and the movable rod can be moved to the loosening groove at the same time. At this time, the movable rod can be driven to flip under the action of the auxiliary torsion spring, and the movable rod can drive the arc-shaped insert block to disengage from the arc-shaped slot. At this time, the connection restriction on the push pin can be released, and the push pin can be pulled out of the threaded rod by simply pulling it. Conversely, the installation of the push pin can be achieved, thereby facilitating the replacement of the severely worn push pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a condenser pre-punching ejector pin structure proposed by the utility model;

[0016] Figure 2 A schematic cross-sectional view of a condenser pre-punching ejector pin structure proposed by the utility model;

[0017] Figure 3 This is a structural schematic diagram of a connecting plate portion of a condenser pre-punching ejector pin structure proposed by the utility model;

[0018] Figure 4 A structural schematic diagram of a guide slide plate portion of a condenser pre-punching ejector pin structure proposed by the utility model;

[0019] Figure 5 A schematic cross-sectional structure diagram of a threaded rod portion of a condenser pre-punching ejector pin structure proposed by the utility model;

[0020] Figure 6 A structural schematic diagram of a movable rod portion of a condenser pre-punching ejector pin structure proposed by the utility model;

[0021] Figure 7 The utility model provides a schematic structural diagram of a top pin portion of a condenser pre-punching top pin structure.

[0022] In the figure: 100, lower stamping die; 101, upper stamping die; 200, movable groove; 201, connecting plate; 202, fixed guide rod; 203, ejector spring; 204, extrusion rod; 205, threaded rod; 206, ejector pin; 207, positioning groove; 208, positioning block; 209, fixed rod; 210, guide slide; 300, rotating shaft; 301, knob; 302, first bevel gear; 303, second bevel gear; 304, annular groove; 305, limiting swivel; 306, threaded hole; 400, fixed seat; 401, fixed shaft; 402, movable rod; 403, extrusion block; 404, arc-shaped plug block; 405, arc-shaped slot; 406, movable slide groove; 407, loose groove; 408, rotating hole; 409, auxiliary torsion spring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely 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 of the embodiments.

[0024] Reference Figure 1-7A condenser pre-punching ejector pin structure includes a lower punching die 100, an upper punching die 101 is arranged on the lower punching die 100, a plurality of movable grooves 200 are opened on the lower punching die 100, a connecting plate 201 is slidably installed in the movable groove 200, a plurality of fixed guide rods 202 are slidably installed on the connecting plate 201, two ends of the fixed guide rods 202 are respectively fixedly installed on the inner walls of both sides of the movable groove 200, an ejection spring 203 is slidably sleeved on the fixed guide rods 202, one end of the ejection spring 203 is fixedly installed on the inner wall of the movable groove 200, and the other end of the ejection spring 203 is fixedly installed on one side of the connecting plate 201, one end of two extrusion rods 204 are fixedly installed on the top side of the connecting plate 201, and the two extrusion rods 204 are fixedly installed. The other end of each of them passes through the lower stamping die 100, two threaded rods 205 are slidably installed on the connecting plate 201, and the inner walls of the two threaded rods 205 are movably installed with ejector pins 206, and one end of the two ejector pins 206 passes through the lower stamping die 100, and two rotating shafts 300 are rotatably installed on the connecting plate 201, and knobs 301 and first bevel gears 302 are fixedly installed at both ends of the two rotating shafts 300, and second bevel gears 303 are threadedly sleeved on the two threaded rods 205, and the two second bevel gears 303 are rotatably installed on the connecting plate 201, and the two second bevel gears 303 are respectively meshed with the two first bevel gears 302. When the upper stamping die 101 moves downward to stamp the condenser side plate, it will squeeze the extrusion rod 204. The extrusion rod 204 is squeezed and drives the connecting plate 201 to slide in the movable groove 200. While the connecting plate 201 slides, it will slide on the multiple fixed guide rods 202 and squeeze the ejection spring 203. At the same time, the sliding connecting plate 201 will drive the threaded rod 205 to move downward through the second bevel gear 303, so that the moving threaded rod 205 drives the ejection pin 206 to move downward through the cooperation with the movable rod 402, so that the ejection pin 206 moves into the lower stamping die 100. After the stamping is completed, the upper stamping die 101 rises. At this time, the extrusion rod 204 is no longer squeezed, and the ejection spring 203 in the compressed state will release and push the connecting plate 201 to move and reset. The reset connecting plate 201 will drive the ejection pin 206 out of the lower stamping die 100. The ejector pin 206 can lift up the stamped side plate to realize demoulding, and the corresponding knob 301 can be rotated according to the actual processing situation. The knob 301 will drive the rotating shaft 300 to rotate. When the rotating shaft 300 rotates, it will drive the first bevel gear 302 to rotate. When the first bevel gear 302 rotates, it will drive the second bevel gear 303 to rotate by meshing with the second bevel gear 303. During the rotation of the second bevel gear 303, the limiting swivel 305 will be driven to rotate in the annular groove 304, thereby preventing the second bevel gear 303 from deviating or falling off during rotation. The continuously rotating second bevel gear 303 will drive the threaded rod 205 to slide vertically. The continuously moving threaded rod 205 will drive the ejector pin 206 to move.This facilitates the adjustment of the ejection degree of the ejector pin 206, so as to compensate for the wear of the ejector pin 206, and to adjust the ejection degree of the ejector pin 206 according to the stripping condition of the side plate.

[0025] Furthermore, a plurality of fixing seats 400 are fixedly installed on one side of the threaded rod 205, and a same fixing shaft 401 is fixedly installed on two fixing seats 400 on the same side, a movable rod 402 is rotatably installed on the fixed shaft 401, and an extrusion block 403 and an arc-shaped plug block 404 are fixedly installed on both sides of the movable rod 402, a plurality of arc-shaped slots 405 are opened on the top pin 206, and the arc-shaped plug block 404 is movably installed in a corresponding arc-shaped slot 405, and the inner wall of the connecting plate 201 is opened. There are movable slide grooves 406 and release grooves 407, which are connected to each other. The threaded rod 205 is slidably installed in the movable slide groove 406, and the extrusion block 403 contacts the inner wall of the movable slide groove 406. When the ejector pin 206 is seriously worn, the knob 301 can be continuously rotated to the bottom, so that the threaded rod 205 continues to rise and drives the ejector pin 206 to be ejected from the lower stamping die 100, and at the same time, the movable rod 402 and the extrusion block 403 are driven in the movable slide groove through the fixed seat 400. The movable rod 402 that continues to slide will move to the release groove 407. At this time, the extrusion block 403 is no longer blocked by the movable slide groove 406, and the auxiliary torsion spring 409 is in a compressed state. The compressed auxiliary torsion spring 409 will be released and drive the movable rod 402 to flip. The continuously flipped movable rod 402 will move to the release groove 407, and at the same time, it will drive the arc-shaped plug block 404 to slide out of the arc-shaped slot 405. At this time, the connection restriction on the ejector pin 206 can be released. Just pull the ejector pin 206 to release the ejector pin 206. 6 can be pulled out, and a new ejector pin 206 is only needed to be inserted into the threaded rod 205, and the positioning groove 207 is aligned with the positioning block 208 for positioning, and then the knob 301 is rotated in the opposite direction to make the threaded rod 205 descend. During the descending process of the threaded rod 205, the movable rod 402 is driven to descend, and during the descending process, the squeezing block 403 is squeezed by the movable slide groove 406 and drives the movable rod 402 to flip and reset, so that the arc-shaped insert block 404 is reinserted into the arc-shaped slot 405, and the replacement operation is completed.

[0026] Furthermore, a rotating hole 408 is opened on the inner wall of the movable rod 402, and the fixed shaft 401 is rotatably installed in the rotating hole 408. An auxiliary torsion spring 409 is fixedly sleeved on the fixed shaft 401, and one end of the auxiliary torsion spring 409 is fixedly installed on the inner wall of the rotating hole 408, and the other end of the auxiliary torsion spring 409 is fixedly installed on the fixed shaft 401. When the extrusion block 403 is no longer blocked by the movable slide groove 406, since the auxiliary torsion spring 409 is in a compressed state, the compressed auxiliary torsion spring 409 will be released and drive the movable rod 402 to flip over. The flipped movable rod 402 will rotate on the fixed shaft 401 through the rotating hole 408, so that the movable rod 402 can achieve the effect of flipping.

[0027] Furthermore, a positioning groove 207 is formed on the inner wall of the ejector pin 206, and a positioning block 208 is movably installed in the positioning groove 207. The positioning block 208 is fixedly installed on the inner wall of the threaded rod 205. The positioning groove 207 on the ejector pin 206 is aligned with the positioning block 208 to perform positioning, thereby preventing the ejector pin 206 from deflecting.

[0028] Furthermore, four fixed rods 209 are fixedly installed on the bottom side of the connecting plate 201, and the same guide slide 210 is slidably installed on the two fixed rods 209 located on the same side. The two guide slides 210 are respectively fixedly installed on the bottom sides of the two threaded rods 205. The sliding threaded rod 205 will drive the guide slide 210 to slide on the two fixed rods 209, thereby limiting the moving direction of the threaded rod 205.

[0029] Furthermore, two annular grooves 304 are provided on the inner wall of the connecting plate 201, and limiting swivels 305 are rotatably installed in the two annular grooves 304. The two limiting swivels 305 are respectively fixedly installed on the bottom sides of the two second bevel gears 303. During the rotation of the second bevel gears 303, the limiting swivels 305 will be driven to rotate in the annular grooves 304, thereby preventing the second bevel gears 303 from being offset or falling off during rotation.

[0030] Furthermore, a threaded hole 306 is formed on the inner wall of the second bevel gear 303 , and the threaded rod 205 is threadedly installed in the threaded hole 306 . The rotating second bevel gear 303 will drive the threaded rod 205 to slide vertically through the cooperation with the threaded hole 306 .

[0031] Working principle of this utility model:

[0032] When in use, the upper stamping die 101 moves downward to stamp the condenser side plate and squeezes the squeezing rod 204. The squeezing rod 204 is squeezed and drives the connecting plate 201 to slide in the movable groove 200. While the connecting plate 201 slides, it slides on multiple fixed guide rods 202 and squeezes the ejection spring 203. At the same time, the sliding connecting plate 201 drives the threaded rod 205 to move downward through the second bevel gear 303, so that the moving threaded rod 205 drives the ejection pin 206 to move downward through the cooperation with the movable rod 402, so that the ejection pin 206 moves into the lower stamping die 100. After the stamping is completed, the upper stamping die 101 rises. At this time, the squeezing rod 204 is no longer squeezed, and the ejection spring 203 in the compressed state will be released and push the connecting plate 201 to move downward. The plate 201 moves and resets, and the reset connecting plate 201 will drive the ejector pin 206 to be ejected from the lower stamping die 100, so that the ejector pin 206 can lift the stamped side plate to achieve demoulding, and the corresponding knob 301 can be rotated according to the actual processing situation, and the knob 301 will drive the rotating shaft 300 to rotate. When the rotating shaft 300 rotates, it will drive the first bevel gear 302 to rotate. When the first bevel gear 302 rotates, it will drive the second bevel gear 303 to rotate through meshing with the second bevel gear 303. During the rotation of the second bevel gear 303, it will drive the limiting swivel 305 to rotate in the annular groove 304, thereby preventing the second bevel gear 303 from deviating or falling off during rotation. The continuously rotating second bevel gear 303 will The threaded rod 205 is driven to slide vertically by cooperating with the threaded hole 306, and the sliding threaded rod 205 will drive the guide slide plate 210 to slide on the two fixed rods 209, thereby limiting the moving direction of the threaded rod 205. The continuously moving threaded rod 205 will drive the ejector pin 206 to move, thereby facilitating the adjustment of the ejection degree of the ejector pin 206, so as to compensate for the wear of the ejector pin 206, and at the same time, to adjust the ejection degree of the ejector pin 206 according to the stripping condition of the side plate. When the ejector pin 206 is severely worn, the knob 301 can be continuously turned to the bottom, so that the threaded rod 205 continues to rise and drives the ejector pin 206 to be ejected from the lower stamping die 100. During the upward process of the threaded rod 205, it will slide in the movable slide groove 406, and at the same time, it will pass The movable rod 402 and the extrusion block 403 are driven to slide in the movable slide groove 406 through the fixed seat 400. The movable rod 402 that continues to slide will move to the loosening groove 407. At this time, the extrusion block 403 is no longer blocked by the movable slide groove 406, and the auxiliary torsion spring 409 is in a compressed state. The compressed auxiliary torsion spring 409 will be released and drive the movable rod 402 to flip. The flipped movable rod 402 will rotate on the fixed shaft 401 through the rotating hole 408, so that the movable rod 402 can achieve the flipping effect. The continuously flipped movable rod 402 will move to the loosening groove 407, and at the same time, it will drive the arc-shaped plug block 404 to slide out of the arc-shaped slot 405. At this time, the connection restriction on the ejector pin 206 can be released, and the ejector pin 206 can be pulled out by simply pulling it.When replacing, it is only necessary to insert the new ejector pin 206 into the threaded rod 205, align the positioning slot 207 with the positioning block 208 for positioning, and then reversely rotate the knob 301 to make the threaded rod 205 descend. During the process of the threaded rod 205 descending, the movable rod 402 will be driven to descend. The continuously descending movable rod 402 will drive the extrusion block 403 to descend. During the process of the extrusion block 403 descending, it will be squeezed by the movable slide slot 406 and drive the movable rod 402 to flip and reset. The flipped and reset movable rod 402 will compress the auxiliary torsion spring 409 and drive the arc-shaped insert block 404 to reinsert into the arc-shaped slot 405, thus completing the replacement operation.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A condenser pre-punching ejector pin structure, comprising a lower punching die (100), wherein an upper punching die (101) is disposed on the lower punching die (100), characterized in that: The lower punching die (100) is provided with a plurality of movable grooves (200), a connecting plate (201) is slidably mounted in the movable grooves (200), a plurality of fixed guide rods (202) are slidably mounted on the connecting plate (201), two ends of the fixed guide rods (202) are respectively fixedly mounted on the inner walls of the movable grooves (200), an ejection spring (203) is slidably sleeved on the fixed guide rods (202), one end of the ejection spring (203) is fixedly mounted on the inner wall of the movable groove (200), and the other end of the ejection spring (203) is fixedly mounted on one side of the connecting plate (201), one end of two extrusion rods (204) is fixedly mounted on the top side of the connecting plate (201), and the other ends of the two extrusion rods (204) are fixedly mounted on the top side of the connecting plate (201). Both penetrate the lower stamping die (100); two threaded rods (205) are slidably mounted on the connecting plate (201); the inner walls of the two threaded rods (205) are movably mounted with ejector pins (206); one end of the two ejector pins (206) penetrates the lower stamping die (100); two rotating shafts (300) are rotatably mounted on the connecting plate (201); knobs (301) and first bevel gears (302) are fixedly mounted at both ends of the two rotating shafts (300); second bevel gears (303) are threadedly sleeved on the two threaded rods (205); the two second bevel gears (303) are rotatably mounted on the connecting plate (201); and the two second bevel gears (303) are respectively meshed with the two first bevel gears (302).

2. A condenser pre-punching pin structure according to claim 1, characterized in that: A plurality of fixed seats (400) are fixedly installed on one side of the threaded rod (205); a same fixed shaft (401) is fixedly installed on two fixed seats (400) located on the same side; a movable rod (402) is rotatably installed on the fixed shaft (401); an extrusion block (403) and an arc-shaped plug block (404) are respectively fixedly installed on both sides of the movable rod (402); a plurality of arc-shaped slots (405) are provided on the ejector pin (206); the arc-shaped plug block (404) is movably installed in a corresponding arc-shaped slot (405); a movable slide groove (406) and a release groove (407) are provided on the inner wall of the connecting plate (201); the movable slide groove (406) and the release groove (407) are communicated with each other; the threaded rod (205) is slidably installed in the movable slide groove (406); the extrusion block (403) contacts the inner wall of the movable slide groove (406).

3. A condenser pre-punching pin structure according to claim 2, characterized in that: The inner wall of the movable rod (402) is provided with a rotating hole (408), the fixed shaft (401) is rotatably mounted in the rotating hole (408), an auxiliary torsion spring (409) is fixedly sleeved on the fixed shaft (401), one end of the auxiliary torsion spring (409) is fixedly mounted on the inner wall of the rotating hole (408), and the other end of the auxiliary torsion spring (409) is fixedly mounted on the fixed shaft (401).

4. A condenser pre-punching pin structure according to claim 1, characterized in that: The inner wall of the ejector pin (206) is provided with a positioning groove (207), a positioning block (208) is movably installed in the positioning groove (207), and the positioning block (208) is fixedly installed on the inner wall of the threaded rod (205).

5. The condenser pre-punching pin structure according to claim 1, characterized in that: Four fixing rods (209) are fixedly mounted on the bottom side of the connecting plate (201), and a same guide slide plate (210) is slidably mounted on two fixing rods (209) on the same side. The two guide slide plates (210) are respectively fixedly mounted on the bottom sides of the two threaded rods (205).

6. A condenser pre-punching pin structure according to claim 1, characterized in that: The inner wall of the connecting plate (201) is provided with two annular grooves (304), and limiting swivels (305) are rotatably installed in the two annular grooves (304). The two limiting swivels (305) are respectively fixedly installed on the bottom sides of the two second bevel gears (303).

7. The condenser pre-punching pin structure according to claim 1, characterized in that: The inner wall of the second bevel gear (303) is provided with a threaded hole (306), and the threaded rod (205) is threadedly installed in the threaded hole (306).

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