Insert pin quick-changing structure of die-casting die

Abstract

The utility model belongs to the technical field of die-casting dies, and particularly discloses an insert pin quick-changing structure of a die-casting die, which comprises a base and notches, the notches are distributed on two sides of the center of the lower portion of the base, an assembly groove is arranged in the center of the upper portion of each notch, a sleeve block is clamped in each notch, a clamping groove is arranged inside each sleeve block, and the clamping grooves are matched with the assembly grooves. And an insert pin is longitudinally inserted between the clamping groove and the assembling groove, and an inner cavity is formed behind the notch. According to the insert pin quick-changing structure of the die-casting die, the inner cavity is formed behind the notch, the sleeve block is inserted into the notch firstly, the insert pin is inserted between the clamping groove and the assembling groove after the sleeve block is aligned with the clamping groove and the assembling groove, then any knob behind is twisted, and symmetrical connecting rods on the two sides are guided to be folded after the knob penetrates through the open groove; and if the insert pin needs to be taken out, the rotary knob is reversely rotated to open the stop block, and the problem that the insert pin is inconvenient to replace is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of die-casting molds, in particular to a quick-changing structure for inserting pins of a die-casting mold. Background Art

[0002] Die-casting molds are usually divided into two groups of modules, the upper and lower modules. The internal cavities are extremely precise and the channels are very coherent. During die-casting, hot molten metal needs to be injected into the cavity of the mold and the upper and lower modules are closed simultaneously. This allows the molten metal in the lower mold to contact the inner cavity of the upper mold. As the molten metal cools, it gradually takes shape.

[0003] The insert pin, also known as the ejector pin, can be installed in the hole of the mold to prevent the module from shaking during the die-casting process. It is used for positioning and reinforcement. However, in the past, the insert pin was often directly installed in the template and could not be easily removed. If the end of the insert pin was damaged, it would be difficult to replace it quickly, which was very inconvenient.

[0004] Now, a novel quick-change structure for inserting pins of a die-casting mold is proposed to solve the above problems. Utility Model Content

[0005] The purpose of the present invention is to provide a quick-change structure for inserting pins of a die-casting mold, so as to solve the problem of inconvenience in replacing inserting pins in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a quick-changing structure for an inlay pin of a die-casting mold, comprising a base and a slot, wherein the inlay pin is distributed on both sides of the lower center of the base, and an assembly slot is provided at the upper center of the slot, a sleeve block is clamped in the slot, and a clamping slot is provided inside the sleeve block, an inlay pin is longitudinally inserted between the clamping slot and the assembly slot, an inner chamber is provided behind the slot, and a slot is provided between the inner chamber and the slot, gear 1 is equipped on the left side of the inner side of the inner chamber, and gear 2 is equipped on the right side of the inner side of the inner chamber, connecting rods are respectively fixed at the centers of the bottoms of gear 1 and gear 2, and a stopper is fixed at the front end of the connecting rod, knobs are respectively equipped on both sides of the rear of the base, and side grooves are respectively provided on both sides of the slot.

[0007] Preferably, the top of the knob is fixedly connected to gear 1 and gear 2 respectively, and the rotation directions of gear 1 and gear 2 are opposite.

[0008] Preferably, the connecting rod can guide the stopper to rotate horizontally, and the stopper is attached to both sides of the bottom of the sleeve block.

[0009] Preferably, limiting grooves are respectively provided on both sides above the notch, and a transverse groove is provided on the inner side of the limiting groove, a short rod is fixed on the inner side of the transverse groove, and a rod body is sleeved on the outer side of the short rod, the end of the rod body is fixedly connected to a bracket, and a guide wheel is movably connected between the front and rear of the inner side of the bracket, a sliding groove is provided on the inner side of the bracket, and a spring is transversely welded between the bracket and the transverse groove.

[0010] Preferably, the outer side of the short rod is embedded in the sliding groove, and the rod body can move left and right along the short rod.

[0011] Preferably, the guide wheel can roll longitudinally inside the bracket, and the spring can be compressed and expanded by the rod.

[0012] Preferably, a collar is fixed around the top of the inner wall of the notch, the sleeve block is embedded in the collar, grooves are respectively provided on both sides of the bottom of the sleeve block, and a clamping block is fixed below the groove.

[0013] Preferably, the grooves are symmetrically arranged on both sides of the bottom of the sleeve block, and the sleeve block and the sleeve ring are arranged in concentric circles.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the quick-change structure of the insert pin of the die-casting mold not only realizes the rapid replacement of the insert pin and limits the sliding of the insert pin, but also makes it easy to remove the accessories;

[0015] By setting an inner chamber at the rear of the slot, the sleeve block is first inserted into the slot, and after aligning the card slot and the assembly slot, the inlay pin is inserted between the two. Then, any knob at the rear is turned to guide the connecting rods symmetrical on both sides to close after passing through the slot, so that the block can be taken out of the side slot and then overlapped under the sleeve block to prevent the sleeve block from slipping out of the slot, thus completing a single structural fixation. If it needs to be taken out, the knob is rotated in the opposite direction to open the block, allowing the staff to quickly remove the sleeve block and inlay pins.

[0016] By providing limiting grooves on both sides above the notch, guide wheels connected to the bracket are respectively installed in the limiting grooves on both sides of the assembly groove, and the side of the bracket is sleeved on the outside of the short rod by the rod body. Because a spring is installed between the rod body and the transverse groove, it can provide support force for the guide wheel, clamping the center pin from both sides, and providing lubrication assistance when the pin moves up and down, preventing the pin from getting stuck during assembly and disassembly;

[0017] By fixing a ring around the top of the inner wall of the slot, the block wrapped around the outside of the pin can be inserted into the ring in the slot. The inner wall of the ring is equipped with a silicone gasket to prevent the block from loosening. There are card blocks in the grooves on both sides of the bottom of the block, which can facilitate people to reach into the grooves to hook the card blocks, and then quickly disassemble the block. The same is true for assembly, so that the block has a fulcrum. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the notch in the present invention from a top view;

[0020] Figure 3 For the utility model Figure 1 A schematic diagram of the enlarged structure of the local section at point A in the middle;

[0021] Figure 4 This is a schematic diagram of the front cross-sectional structure of the notch of the present invention.

[0022] In the figure: 1. Base; 2. Notch; 3. Inlay pin; 4. Limiting groove; 5. Bushing; 6. Guide wheel; 7. Side groove; 8. Slot; 9. Knob; 10. Slot; 11. Inner chamber; 12. Gear 1; 13. Gear 2; 14. Stopper; 15. Connecting rod; 16. Bracket; 17. Rod body; 18. Spring; 19. Short rod; 20. Slide groove; 21. Horizontal groove; 22. Assembly groove; 23. Ring; 24. Groove; 25. Block. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1: Please refer to Figure 1-4 , a pin-changing structure for a die-casting mold, comprising a base 1 and a slot 2, with slots 2 distributed on both sides of the lower center of the base 1, an assembly slot 22 provided at the upper center of the slot 2, a sleeve block 5 clamped in the slot 2, and a slot 10 provided inside the sleeve block 5, a pin 3 longitudinally inserted between the slot 10 and the assembly slot 22, an inner chamber 11 provided behind the slot 2, and a slot 8 provided between the inner chamber 11 and the slot 2, a gear 12 provided on the left inside the inner chamber 11, a gear 2 13 provided on the right inside the inner chamber 11, connecting rods 15 fixed at the centers of the bottoms of the gears 12 and 13, and a stopper 14 fixed to the front end of the connecting rod 15, knobs 9 provided on both sides of the rear of the base 1, and side grooves 7 provided on both sides of the slot 2;

[0025] The top of the knob 9 is fixedly connected to the gear 1 12 and the gear 2 13 respectively. The rotation directions of the gear 12 and the gear 2 13 are opposite. The connecting rod 15 can guide the stopper 14 to rotate horizontally. The stopper 14 is attached to both sides of the bottom of the sleeve 5.

[0026] Specifically, if Figure 1 and Figure 2 As shown, first insert the sleeve block 5 into the slot 2, align the card slot 10 with the assembly slot 22, and insert the inlay pin 3 between the two. Then, turn any knob 9 at the rear, pass through the slot 8, and guide the connecting rods 15 symmetrical on both sides to retract, so that the stopper 14 can be taken out of the side slot 7 and then overlapped under the sleeve block 5 to prevent the sleeve block 5 from sliding out of the slot 2. This completes a single structural fixation. If you want to take it out, just rotate the knob 9 in the opposite direction to open the stopper 14.

[0027] Example 2: Limiting grooves 4 are respectively provided on both sides above the notch 2, and a transverse groove 21 is provided inside the limiting groove 4. A short rod 19 is fixed inside the transverse groove 21, and the outer portion of the short rod 19 is sleeved with a rod body 17. The end of the rod body 17 is fixedly connected to a bracket 16, and a guide wheel 6 is movably connected between the front and rear of the inner side of the bracket 16. A sliding groove 20 is provided on the inner side of the bracket 16, and a spring 18 is transversely welded between the bracket 16 and the transverse groove 21;

[0028] The outer side of the short rod 19 is embedded in the slide groove 20, the rod body 17 can move left and right along the short rod 19, the guide wheel 6 can roll longitudinally inside the bracket 16, and the spring 18 can be squeezed by the rod body 17 and expand and contract;

[0029] Specifically, if Figure 1 and Figure 3 As shown, the limiting grooves 4 on both sides of the assembly groove 22 are respectively equipped with guide wheels 6 connected to the bracket 16, and the side of the bracket 16 is connected to the outside of the short rod 19 by means of the rod body 17. Because a spring 18 is installed between the rod body 17 and the horizontal groove 21, it can provide support force for the guide wheel 6, clamp the center of the inlay pin 3 from both sides, and provide lubrication assistance when the inlay pin 3 moves up and down.

[0030] Example 3: A collar 23 is fixed around the top of the inner wall of the notch 2, and the sleeve 5 is embedded in the collar 23. Grooves 24 are provided on both sides of the bottom of the sleeve 5, and a clamping block 25 is fixed below the groove 24. The grooves 24 are symmetrically arranged on both sides of the bottom of the sleeve 5, and the sleeve 5 and the collar 23 are arranged concentrically;

[0031] Specifically, if Figure 1 and Figure 4 As shown, the sleeve block 5 wrapped around the outside of the inlay pin 3 can be inserted into the ring 23 in the slot 2. A silicone gasket is installed around the inner wall of the ring 23 to prevent the sleeve block 5 from loosening. The grooves 24 on both sides of the bottom of the sleeve block 5 are provided with clamping blocks 25, which can facilitate people to reach into the grooves 24 to hook the clamping blocks 25, and then quickly remove the sleeve block 5.

[0032] Working principle: When the utility model is in use, first, insert the sleeve block 5 into the slot 2, align the card slot 10 with the assembly slot 22, and insert the inlay pin 3 between the two, then twist any knob 9 at the rear, pass through the slot 8 and guide the connecting rods 15 symmetrical on both sides to close, so that the stopper 14 can be taken out from the side groove 7 and then overlapped under the sleeve block 5 to prevent the sleeve block 5 from sliding out of the slot 2, completing a single structural fixation. If it needs to be taken out, rotate the knob 9 in the opposite direction to open the stopper 14, so that the staff can quickly remove the sleeve block 5 and the inlay pin 3 and other objects, because the sleeve block 5 wrapped on the outside of the inlay pin 3 can be inserted into the collar 2 in the slot 2. 3, a silicone gasket is installed around the inner wall of the ring 23 to prevent the sleeve 5 from loosening, and a clamping block 25 is provided in the grooves 24 on both sides of the bottom of the sleeve 5, which can be easily reached into the groove 24 to hook the clamping block 25 for removal. The limiting grooves 4 on both sides of the assembly groove 22 are respectively equipped with guide wheels 6 connected to the bracket 16, and the side of the bracket 16 is connected to the outside of the short rod 19 by the rod body 17. Because a spring 18 is installed between the rod body 17 and the transverse groove 21, it can provide support for the guide wheel 6, clamp the center pin 3 from both sides, and provide lubrication assistance when the pin 3 moves up and down.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A quick-change pin structure for a die-casting mold, comprising a base (1) and a notch (2), characterized in that: The base (1) has slots (2) on both sides of the lower center, and an assembly slot (22) is provided at the upper center of the slot (2). A sleeve (5) is clamped in the slot (2), and a slot (10) is provided inside the sleeve (5). A pin (3) is longitudinally inserted between the slot (10) and the assembly slot (22). An inner chamber (11) is provided at the rear of the slot (2), and a slot (8) is provided between the inner chamber (11) and the slot (2). Gear 1 (12) is provided on the left side of the inner chamber (11), and gear 2 (13) is provided on the right side of the inner chamber (11). Connecting rods (15) are fixed at the centers of the bottoms of gear 1 (12) and gear 2 (13), and a stopper (14) is fixed at the front end of the connecting rod (15). Knobs (9) are provided on both sides of the rear of the base (1), and side grooves (7) are provided on both sides of the slot (2).

2. The quick-change pin structure for a die-casting mold according to claim 1, characterized in that: The top of the knob (9) is fixedly connected to gear one (12) and gear two (13), respectively, and the rotation directions of gear one (12) and gear two (13) are opposite.

3. The quick-change pin structure for a die-casting mold according to claim 1, characterized in that: The connecting rod (15) can guide the stopper (14) to rotate horizontally, and the stopper (14) is attached to both sides of the bottom of the sleeve block (5).

4. The quick-change pin structure for a die-casting mold according to claim 1, characterized in that: Limiting grooves (4) are respectively provided on both sides above the notch (2), and a transverse groove (21) is provided inside the limiting groove (4), a short rod (19) is fixed inside the transverse groove (21), and a rod body (17) is sleeved on the outside of the short rod (19), an end of the rod body (17) is fixedly connected to a bracket (16), and a guide wheel (6) is movably connected between the front and rear of the inner side of the bracket (16), a sliding groove (20) is provided on the inner side of the bracket (16), and a spring (18) is transversely welded between the bracket (16) and the transverse groove (21).

5. The quick-change pin structure for a die-casting mold according to claim 4, characterized in that: The outer side of the short rod (19) is embedded in the sliding groove (20), and the rod body (17) can move left and right along the short rod (19).

6. The quick-change pin structure for a die-casting mold according to claim 4, characterized in that: The guide wheel (6) can roll longitudinally inside the bracket (16), and the spring (18) can be compressed and extended by the rod (17).

7. The quick-change pin structure for a die-casting mold according to claim 1, characterized in that: A collar (23) is fixed around the top of the inner wall of the notch (2), and the sleeve (5) is embedded in the collar (23). Grooves (24) are provided on both sides of the bottom of the sleeve (5), and a clamping block (25) is fixed below the groove (24).

8. The quick-change pin structure for a die-casting mold according to claim 7, characterized in that: The grooves (24) are symmetrically arranged on both sides of the bottom of the sleeve block (5), and the sleeve block (5) and the sleeve ring (23) are arranged in concentric circles.

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