Motor support stamping die with quick demolding structure

Abstract

This utility model relates to the field of mold technology, specifically a stamping mold for a motor bracket with a quick demolding structure. It includes two symmetrical support seats; multiple ejector pins are arranged sequentially from back to front on the top of the lifting plate, passing through the lower mold and the cavity, with the height of the ejector pins decreasing sequentially from back to front; when the punch descends, the multiple ejector pins are compressed by the blank and retract synchronously downwards, avoiding the stamping space; after stamping, the elastic potential energy of the return spring drives the lifting plate to move the ejector pin group synchronously upwards, and the ejector pins use a uniform combined force to smoothly eject the formed workpiece from the cavity. The ejector pin layout design with different height parameters ensures complete separation of the workpiece from the lower mold surface, avoiding workpiece deformation or jamming caused by uneven demolding force. This design, through a multi-ejector pin coordinated linkage structure, achieves an integrated function of stamping and efficient demolding, improving the reliability of workpiece removal and processing continuity in automated production.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a stamping mold for a motor bracket with a quick demolding structure. Background Technology

[0002] As a critical structural component of motors, the motor bracket needs to provide mechanical support and vibration damping, and its machining accuracy directly affects the operational stability of the equipment. Stamping dies, with their high efficiency and precision, have become the core technological means for the mass production of motor brackets.

[0003] Utility model patent application number CN201921202363.8 discloses a motor bracket stamping forming device. This device includes a support platform, a support column at the center of the upper surface of the support platform, a stamping platform on the upper surface of the support column, a conveyor belt on one side of the stamping platform, a motor below the conveyor belt, an inclined platform on one side of the conveyor belt, baffles at the front and rear of the inclined platform, a frame collection box on one side of the inclined platform, a raw material hopper on one side of the upper surface of the support platform, a push plate on one side of the raw material hopper, a connecting plate on the other side of the raw material hopper, a display screen in the center of the other side of the stamping platform, a control panel behind the display screen, a push plate control button on the side of the control panel, and a stamping control button below the push plate control button. This utility model effectively solves the problem of the cumbersome step of removing the finished product during the stamping forming of the motor bracket.

[0004] Although the motor bracket stamping forming device solves the problem of inconvenience in removing the motor frame after stamping, the device still has the following problems in actual use: when removing the motor frame, the operator needs to separate the lower mold, which makes unloading very inconvenient. In view of this, we propose a motor bracket stamping die with a quick demolding structure. Utility Model Content

[0005] The purpose of this utility model is to provide a stamping die for a motor bracket with a quick demolding structure, so as to solve the problem mentioned in the background art that when removing the motor bracket, the lower die needs to be separated by the operator, which makes unloading very inconvenient.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A stamping die for a motor bracket with a quick-release structure, comprising:

[0008] Two symmetrical support seats; a sliding groove is provided on the lower support seat; a double-ended lead screw is rotatably installed in the sliding groove, and both ends of the double-ended lead screw are provided with threaded grooves; a connecting block is threadedly connected to each threaded groove.

[0009] A hydraulic cylinder is fixedly installed on the top of the upper support base; a punch is fixed at the end of the piston rod of the hydraulic cylinder.

[0010] The lower die is installed between two support bases; the bottom of the lower die has a cavity for placing the workpiece for stamping.

[0011] The ejection mechanism, installed below the lower die, is used to eject the stamped motor bracket from the cavity. It includes two symmetrical brackets, the bottom of which is fixed to a corresponding connecting block. Two guide rods are fixed at the opening of the brackets, and springs are sleeved on the outside of each guide rod. A lifting plate is provided between the two brackets, and two slots are opened at both ends of the lifting plate. The guide rods pass through the slots, and the top of the springs presses against the lifting plate. Multiple ejector rods are arranged sequentially from back to front on the top of the lifting plate. The ejector rods pass through the lower die and the cavity, and the height of the multiple ejector rods decreases sequentially from back to front.

[0012] Preferably, connecting rods are fixed at each of the four corners between the two support seats, and the ends of the connecting rods are fixedly connected to the support seats by bolts. The connecting rods at the four corners of the support seats are connected by bolts, which enhances the overall rigidity of the mold, reduces stamping vibration deformation, ensures the relative position stability of each component, and improves the service life and processing accuracy of the mold.

[0013] Preferably, the hydraulic cylinder is a double-piston rod hydraulic cylinder, which is fixedly connected to the upper support base by bolts. The bolted fixation of the double-piston rod hydraulic cylinder ensures smooth and symmetrical up-and-down movement of the punch, eliminates the risk of tilting due to unilateral force, and meets the requirements of pressure uniformity and movement accuracy for precision stamping of the motor bracket.

[0014] Preferably, support rods are fixed at the four corners of the bottom of the lower die, and the two ends of the support rods are fixedly connected to the lower die and the support base below by bolts. The four corner support rods of the lower die are bolted to the upper and lower support bases to form a stable overhead structure, which facilitates the loading and unloading of workpieces, is compatible with automated production lines, and ensures the positional accuracy of the lower die cavity during stamping.

[0015] Preferably, the bracket has an overall L-shaped shape and is fixedly connected to the connecting block by bolts. The L-shaped bracket and the connecting block are bolted together to form a composite system of horizontal support and vertical guidance. The compact layout saves space and is suitable for small and medium-sized molds, ensuring accurate installation and movement of the guide rod and lifting plate.

[0016] Preferably, the bottom of the bracket has two fixed guide rails, and the top of the lower support seat has two guide grooves at both ends. The guide rails are slidably connected to the corresponding guide grooves. The sliding fit between the bottom guide rails of the bracket and the guide grooves of the support seat strictly constrains the translation trajectory of the bracket, ensures the straightness of the movement, avoids the ejection mechanism from tilting, and improves the stability and reliability of the demolding process.

[0017] Preferably, the end of the slot is arc-shaped, and the width of the slot is equal to the diameter of the guide rod. The arc-shaped end of the slot precisely matches the guide rod, eliminating stress concentration, preventing the lifting plate from jamming, ensuring smooth operation of the guide rod throughout its stroke, reducing component wear, and improving the smoothness of the ejection mechanism's operation.

[0018] Preferably, a limiting ring is coaxially keyed to the outer wall of the ejector pin, and the limiting ring is pressed against the bottom of the lower mold. The limiting ring is connected to the ejector pin via a key and presses against the lower mold, precisely limiting the extension of the ejector pin, preventing excessive ejection deformation of the workpiece or collision with the mold, ensuring proper demolding without damaging the workpiece or the mold.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. When the punch descends to perform stamping, the blank of the motor support in the cavity undergoes plastic deformation under the pressure of the punch. At this time, multiple sets of ejector pins distributed in the lower die are squeezed downwards synchronously by the blank, avoiding the stamping space. After stamping, the elastic potential energy of the return spring drives the lifting plate to move the ejector pin group upwards synchronously. Each ejector pin exerts a uniform force to smoothly eject the formed workpiece from the cavity. With the ejector pin layout design with different height parameters, a stepped ejection force can be formed during demolding, which promotes complete separation of the workpiece from the lower die surface and avoids workpiece deformation or jamming caused by uneven demolding force. This design, through the multi-ejector pin coordinated linkage structure, realizes the integrated function of stamping and efficient demolding, improving the reliability of workpiece removal and processing continuity in automated production.

[0021] 2. Through the coordinated design of the detachable guide rod mounting structure and the double-ended lead screw transmission mechanism, when maintenance is required, the rotation of the drive screw synchronously moves the horizontal motion bracket, allowing the guide rod to quickly disengage from the slot of the lifting plate. This design enables rapid disassembly of the guide rod assembly, facilitating quick replacement of its externally mounted return spring. This effectively solves the problem of spring elasticity decay affecting demolding efficiency due to long-term use, ensuring stable operation of the demolding mechanism while improving the convenience of mold maintenance. Attached Figure Description

[0022] Figure 1 This is a side view of the overall structure of this utility model;

[0023] Figure 2 This is an exploded structural diagram of the lower mold in this utility model;

[0024] Figure 3 This is a partial structural schematic diagram of the present invention;

[0025] Figure 4 This is a schematic diagram of the ejection mechanism in this utility model;

[0026] Figure 5This is a schematic diagram of the lower mold structure of this utility model;

[0027] In the picture:

[0028] 1. Support base; 10. Connecting rod; 11. Slide groove; 12. Guide groove; 13. Double-ended lead screw; 130. Threaded groove; 14. Connecting block; 15. Adjusting screw;

[0029] 2. Hydraulic cylinder; 20. Punch;

[0030] 3. Lower mold; 30. Cavity; 31. Support rod;

[0031] 4. Ejection mechanism; 40. Bracket; 41. Guide rod; 42. Spring; 43. Guide rail; 44. Lifting plate; 440. Slot; 45. Ejector rod; 450. Limit ring. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] This embodiment provides a technical solution:

[0034] Please see Figure 1 and Figure 4 As shown, a stamping die for a motor bracket with a quick demolding structure includes two symmetrical support seats 1; a slide groove 11 is provided at the lower support seat 1; a double-ended lead screw 13 is rotatably installed in the slide groove 11, and threaded grooves 130 are provided at both ends of the double-ended lead screw 13; connecting blocks 14 are threadedly connected to the threaded grooves 130; through the cooperation of the slide groove 11 and the double-ended lead screw 13, the connecting blocks 14 can move synchronously in opposite directions, providing a horizontal driving foundation for the ejection mechanism 4.

[0035] In this embodiment, connecting rods 10 are fixed at the four corners between the two support bases 1, and the ends of the connecting rods 10 are fixedly connected to the support bases 1 by bolts.

[0036] In this embodiment, an adjusting screw 15 is coaxially keyed to the front end of the double-ended lead screw 13. The outer wall of the adjusting screw 15 is provided with multiple anti-slip grooves. Rotating the adjusting screw 15 makes it easy to rotate the double-ended lead screw 13, thus improving the convenience of operation.

[0037] It is understood that the threaded grooves 130 at both ends of the double-ended lead screw 13 in this embodiment adopt opposite spiral threads. This design is conducive to driving the connecting blocks 14 on both sides to move synchronously in opposite directions, ensuring that the two supports 40 move symmetrically at the same speed, avoiding tilting or jamming of the guide rod 41 caused by unilateral load, and ensuring the smoothness and coaxiality of the ejection mechanism 4.

[0038] Please see Figure 1 As shown, hydraulic cylinder 2 is fixedly installed on the top of the upper support base 1; a punch 20 is fixed at the end of the piston rod of hydraulic cylinder 2.

[0039] In this embodiment, the hydraulic cylinder 2 is a double-piston rod hydraulic cylinder, which is fixedly connected to the upper support base 1 by bolts. The hydraulic cylinder 2 is fixed to the upper support base 1 by a bolt group, forming a stable force transmission path, ensuring the alignment of the punch 20 and the lower die 3 during stamping, and avoiding forming deviations caused by loose connections. The double-piston rod structure ensures equal force-bearing areas on both sides of the piston, keeping the punch 20 moving smoothly and uniformly, eliminating the risk of tilting caused by unilateral loads. This design is suitable for stamping critical structures such as bearing holes and mounting holes in motor brackets with high precision requirements.

[0040] Please see Figure 1 , Figure 2 and Figure 5 As shown, the lower die 3 is installed between two support bases 1; the bottom of the lower die 3 has a cavity 30 for placing the workpiece for stamping.

[0041] In this embodiment, support rods 31 are fixed at the four corners of the bottom of the lower mold 3. The two ends of the support rods 31 are fixedly connected to the lower mold 3 and the support base 1 below by bolts. The lower mold 3 is supported between the two support bases 1 by the support rods 31, forming an open cavity 30 at the bottom, which facilitates the placement of blanks and the removal of finished products, and is especially suitable for the continuous feeding and unloading process of automated production lines.

[0042] Please see Figures 1-5 As shown, the ejection mechanism 4 is installed below the lower mold 3 and is used to eject the stamped motor bracket from the cavity 30. It includes two symmetrical brackets 40, the bottom of which is fixed to the corresponding connecting block 14. Two guide rods 41 are fixed at the opening of the bracket 40, and springs 42 are sleeved on the outside of each guide rod 41. A lifting plate 44 is provided between the two brackets 40. Two slots 440 are opened at both ends of the lifting plate 44. The guide rods 41 pass through the slots 440, and the top of the springs 42 abuts against the lifting plate 44. Multiple ejector rods 45 are arranged sequentially from back to front on the top of the lifting plate 44. The ejector rods 45 are fixedly connected to the lifting plate 44 by bolts. The ejector rods 45 pass through the lower mold 3 and the cavity 30, and the height of the multiple ejector rods 45 decreases sequentially from back to front.

[0043] In this embodiment, the bracket 40 has an overall L-shaped shape and is fixedly connected to the connecting block 14 by bolts. The L-shaped bracket 40 is fixed to the connecting block 14 by bolts, forming a composite structure of horizontal support and vertical guidance. This allows for the installation of the guide rod 41 and the movement guidance of the lifting plate 44 within a limited space, making it suitable for the integrated layout of small and medium-sized stamping dies.

[0044] In this embodiment, two guide rails 43 are fixed to the bottom of the bracket 40, and two guide grooves 12 are formed at both ends of the top of the support base 1 below. The guide rails 43 are slidably connected to the corresponding guide grooves 12. The guide rails 43 and the guide grooves 12 are precisely matched to ensure the straightness of the bracket 40 is stable when it moves.

[0045] In this embodiment, the end of the slot 440 is arc-shaped, and the width of the slot 440 is equal to the diameter of the guide rod 41. The arc-shaped transition at the end of the slot 440 eliminates stress concentration, prevents the lifting plate 44 from jamming, and ensures smooth movement of the guide rod 41 throughout its entire stroke.

[0046] In this embodiment, a limiting ring 450 is coaxially keyed to the outer wall of the ejector pin 45, and the limiting ring 450 abuts against the bottom of the lower mold 3. The limiting ring 450 is coaxially connected to the ejector pin 45 via a flat key, limiting the extension of the ejector pin 45, preventing workpiece deformation or mold collision, and ensuring complete demolding of the workpiece.

[0047] In practical use, firstly, the user places the motor bracket blank into the cavity 30 of the lower mold 3. Simultaneously, the user starts the double piston rod hydraulic cylinder 2, whose piston rod drives the punch 20 to move downward. The punch 20 presses down smoothly and evenly, stamping the blank in the cavity 30. At this time, the lifting plate 44 and ejector rod 45 of the ejection mechanism 4, under the pressure of the blank, overcome the elastic force of the spring 42 and contract downward, disengaging from the cavity 30. Subsequently, after the stamping is completed, the piston rod of the hydraulic cylinder 2 drives the punch 20 to move upward and reset. The elastic action of the spring 42 drives the lifting plate 44 and ejector rod 45 to move upward. Multiple ejector rods 45 with progressively decreasing heights from back to front use a stepped demolding force to eject the stamped motor bracket from the cavity 30, thus completing the demolding of the motor bracket.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A stamping die for a motor bracket with a quick-release structure, characterized in that, include: Two symmetrical support seats (1); a groove (11) is provided at the lower support seat (1); a double-ended screw (13) is rotatably installed in the groove (11), and threaded grooves (130) are provided at both ends of the double-ended screw (13); a connecting block (14) is threadedly connected to each of the threaded grooves (130). A hydraulic cylinder (2) is fixedly installed on the top of the upper support base (1); a punch (20) is fixed at the end of the piston rod of the hydraulic cylinder (2). The lower die (3) is installed between two support bases (1); the bottom of the lower die (3) has a cavity (30) for placing the workpiece for stamping. Ejection mechanism (4), installed below the lower mold (3), is used to eject the stamped motor bracket out of the cavity (30); includes two symmetrical brackets (40), the bottom end of the bracket (40) is fixed to the corresponding connecting block (14); two guide rods (41) are fixed at the opening of the bracket (40), and springs (42) are sleeved on the outside of the guide rods (41); a lifting plate (44) is provided between the two brackets (40), and two slots (440) are opened at both ends of the lifting plate (44), the guide rods (41) pass through the slots (440), and the top of the springs (42) abuts against the lifting plate (44); multiple push rods (45) are provided on the top of the lifting plate (44) from back to front, the push rods (45) pass through the lower mold (3) and the cavity (30), and the height of the multiple push rods (45) decreases from back to front.

2. The stamping die for a motor bracket with a quick-release structure according to claim 1, characterized in that: Each of the two support seats (1) is fixed with a connecting rod (10) at one of the four corners. The end of the connecting rod (10) is fixedly connected to the support seat (1) by bolts.

3. The stamping die for a motor bracket with a quick-release structure according to claim 1, characterized in that: The hydraulic cylinder (2) is a double piston rod hydraulic cylinder, and the hydraulic cylinder (2) is fixedly connected to the upper support seat (1) by bolts.

4. The stamping die for a motor bracket with a quick-release structure according to claim 1, characterized in that: The bottom four corners of the lower mold (3) are all fixed with support rods (31), and the two ends of the support rods (31) are fixedly connected to the lower mold (3) and the support base (1) below by bolts.

5. The stamping die for a motor bracket with a quick-release structure according to claim 1, characterized in that: The bracket (40) is L-shaped and is fixedly connected to the connecting block (14) by bolts.

6. The stamping die for a motor bracket with a quick-release structure according to claim 1, characterized in that: The bottom of the bracket (40) is fixed with two guide rails (43), and the top two ends of the support base (1) below are provided with two guide grooves (12). The guide rails (43) are slidably connected with the corresponding guide grooves (12).

7. The stamping die for a motor bracket with a quick-release structure according to claim 1, characterized in that: The end of the slot (440) is arc-shaped, and the width of the slot (440) is equal to the diameter of the guide rod (41).

8. The stamping die for a motor bracket with a quick-release structure according to claim 1, characterized in that: The outer wall of the push rod (45) is coaxially connected to a limiting ring (450), and the limiting ring (450) abuts against the bottom of the lower mold (3).

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