A mold anti-sticking protection mechanism

Abstract

The utility model relates to mould technical field, concretely is a kind of mould anti-jamming protection mechanism, including lower mould, linkage rack and driving mechanism are installed on lower mould, driving mechanism includes sleeve seat and power component, power component includes movable seat, worm and end plate, through opening is opened in sleeve seat, movable seat is sleeved in through opening, the tail end of movable seat is equipped with several hanging rods, spring is sleeved on the outside of hanging rod, threaded column is threadedly connected on end plate, the end of threaded column is in abutment with abutment plate. The mould anti-jamming protection mechanism, when worm gear occurs engagement jamming, the acting force produced by jamming can drive movable seat to slide along sleeve seat, to further drive worm synchronous away from worm gear, avoid worm to continuously bear the forced rotation force exerted by motor under jamming state, reduce the risk of further wear of tooth surface, also reduce the possibility of deformation of tooth body.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a mold anti-jamming protection mechanism. Background Technology

[0002] In the mold industry, gear and worm gear drives are a common power transmission method. They convert the rotational power output from the motor into speed reduction and direction conversion through the meshing of the worm gear and worm. Combined with gear transmission, this power is smoothly transmitted to the mold's actuators, such as driving the rack and pinion to move the mold core and complete the demolding of threaded products. This drive method, with its smooth transmission and compact structure, is widely used in various stamping dies, injection molds, and other mold equipment, providing power support for the orderly operation of the mold.

[0003] Utility model patent CN208810903U discloses a mold die device driven by a worm gear. This worm gear driven mold die device has a blanking die structure that can rotate around its axis. The blanking die is installed inside a rotating body, which is installed inside a fixed sleeve. A worm gear is provided on the outer ring of the rotating body, meshing with a worm. The worm is connected to a motor via a connecting rod, and the motor is fixed to the lower die base via a motor fixing plate. The motor is connected to a controller. By setting a rotatable blanking die, the processing of twisted and misaligned pieces can be completed efficiently without human intervention, improving the accuracy of the twisted and misaligned piece process and eliminating the potential dangers posed by human operation of the press.

[0004] The mold cavity device driven by the worm gear is characterized by a decrease in meshing accuracy due to tooth surface wear after long-term use. When the wear accumulates to a certain extent and causes meshing jamming, the motor driving the worm will continue to output power to drive the worm to rotate according to the preset program, so that the worm and the worm wheel in the jammed state maintain continuous rigid contact. This forced transmission not only fails to relieve the jamming state, but also aggravates the wear of the tooth surfaces of both, and may even cause tooth deformation, affecting the transmission stability and service life of the entire mold cavity device. In view of this, we propose a mold anti-jamming protection mechanism. Utility Model Content

[0005] The purpose of this utility model is to provide a mold anti-jamming protection mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A mold anti-jamming protection mechanism includes a lower mold with a linkage rack installed on it. A drive mechanism is installed at the outer end of the lower mold side. The drive mechanism is used to drive the linkage rack to move. The drive mechanism includes a sleeve and a power component sleeved at the side end of the sleeve. The power component includes a movable seat, a worm gear rotatably connected in the movable seat, and an end plate fixed to the side end face of the sleeve. A gap is formed between the movable seat and the end plate. A worm wheel is rotatably connected in the sleeve. The worm gear meshes with the worm wheel. The movable seat can move laterally on the sleeve. When the worm gear and the worm wheel mesh and jam, the movable seat drives the worm gear away from the worm wheel on the sleeve. An opening is provided at one end of the sleeve near the power component. The movable seat is fitted into the opening and slidably connected to the sleeve. Several hanging rods are installed at the tail end of the movable seat. The hanging rods pass through the end plate and are slidably connected to the end plate. A stop plate is also provided at the tail end of the movable seat. The hanging rods pass through the stop plate. A spring is fitted on the hanging rod between the movable seat and the stop plate. A threaded post is threadedly connected to the end plate. The end of the threaded post abuts against the stop plate.

[0007] Preferably, the sleeve has a cavity, and the end of the cavity away from the power component is open. The linkage rack extends into the cavity, and the worm gear is coaxially and fixedly connected to a gear, which meshes with the linkage rack. In this configuration, the cavity provides installation and movement space for the worm gear, gear, and rack. The gear can convert the rotational motion of the worm gear into the linear motion of the rack, thus achieving power transmission.

[0008] Preferably, both the top and bottom ends of the sleeve are fixed with connecting seats by bolts. The connecting seats are L-shaped plate structures, and the bottom end of the connecting seats is fixed to the side surface of the lower mold by bolts. In this configuration, the L-shaped connecting seat can securely connect the sleeve and the lower mold, ensuring the stability of the drive mechanism during operation and preventing vibration from causing transmission deviation.

[0009] Preferably, a cover plate is bolted to the end of the sleeve away from the power component, and the cover plate covers the opening of the cavity; In this configuration, the cover plate can prevent external dust and debris from entering the cavity, thus avoiding foreign objects from affecting the meshing transmission.

[0010] Preferably, a cavity is formed on the end face of the movable seat near the worm gear, the worm is rotatably connected in the cavity, and a motor is coaxially connected to the worm. The motor is installed on the outer end of the movable seat. In this configuration, the sleeve provides rotational support for the worm gear, ensuring the stability of the worm gear's axis during rotation. The motor can directly provide rotational power to the worm gear and moves synchronously with the movable seat.

[0011] Preferably, the front and rear edges of both ends of the top and bottom of the movable seat are provided with protruding limiting flanges. The limiting flanges are used to limit the movement of the movable seat along the opening while preventing the movable seat from coming out of the opening. In this setting, the limiting flange can restrict the movement distance of the movable seat along the opening, while preventing the movable seat from coming out of the opening and ensuring the integrity of the transmission link.

[0012] Preferably, the tail end of the hanging rod is provided with a baffle, which is a circular plate structure and the outer diameter of the baffle is larger than the diameter of the hanging rod. The baffle is used to prevent the hanging rod from coming out of the abutment plate. In this setup, the baffle limits the relative position of the hanging rod and the backing plate through size differences, preventing the hanging rod from separating from the backing plate during operation.

[0013] Preferably, a protruding post is provided on the outer end face of the end plate, a threaded post axially passes through the protruding post and is threadedly connected to the protruding post, a handle is fixed to the outer end of the threaded post, and a push plate is fixed to the inner end of the threaded post, with the push plate in contact with the abutment plate. In this configuration, the protruding post improves the installation stability of the threaded post, the handle facilitates the adjustment of the threaded post, and the push plate increases the contact area with the backing plate to avoid localized compression damage.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This mold anti-jamming protection mechanism prevents the worm gear from getting worn and jammed due to long-term use. While the motor continues to run, the force generated by the jamming will directly act on the movable seat connected to the worm. Driven by this force, the movable seat can slide laterally along the sleeve, thereby driving the worm to move away from the worm gear synchronously. This allows the meshing pair that was originally jammed to quickly disengage. Through the active response of this mechanical structure, the worm is prevented from continuously bearing the forced rotational force applied by the motor in the jammed state, reducing the risk of further wear on the tooth surface and also reducing the possibility of tooth deformation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the drive mechanism in this utility model; Figure 3 This is an exploded view of the sleeve in this utility model; Figure 4 This is an exploded view of the power component in this utility model; Figure 5 This is an exploded view of the movable seat in this utility model; Figure 6 This is a top view of the middle plate of this utility model; The meanings of the labels in the diagram are as follows: 100. Lower mold; 110. Linkage rack; 200. Drive mechanism; 210. Sleeve; 211. Cavity; 212. Worm gear; 213. Gear; 214. Through port; 215. Cover plate; 216. Connecting seat; 220. Power assembly; 221. Movable seat; 2211. Sleeve cavity; 2212. Limiting flange; 2213. Hanging rod; 2214. Spring; 2215. Support plate; 222. Worm; 2221. Motor; 223. End plate; 2231. Protruding post; 2232. Threaded post; 2233. Handle; 2234. Push plate. Detailed Implementation

[0016] 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. Please see Figures 1-6 A mold anti-jamming protection mechanism includes a lower mold 100, a linkage rack 110 mounted on the lower mold 100, and a drive mechanism 200 mounted at the outer side end of the lower mold 100. The drive mechanism 200 is used to drive the linkage rack 110 to move. The drive mechanism 200 includes a sleeve 210 and a power component 220 sleeved at the side end of the sleeve 210. The power component 220 includes a movable seat 221, a worm gear 222 rotatably connected in the movable seat 221, and an end plate 223 fixed to the side end face of the sleeve 210. The movable seat 221 provides a mounting base for the worm gear 222 and can drive the worm gear 222 to move laterally. The end plate 223 can limit the range of motion of the movable seat 221 and prevent the movable seat 221 from moving excessively and detaching from the sleeve 210.

[0017] like Figures 1-4As shown, in this utility model, a cavity 211 is provided inside the sleeve 210, and a worm gear 212 is rotatably connected inside the sleeve 210. The cavity 211 provides installation space for the worm gear 212 and also reserves space for the insertion and movement of the linkage rack 110, ensuring the transmission compatibility between the worm gear 212 and the linkage rack 110. The end of the cavity 211 away from the power component 220 is open, and the linkage rack 110 extends into the cavity 211. A gear 213 is coaxially fixedly connected to the worm gear 212. The gear 213 meshes with the linkage rack 110. The gear 213 can convert the rotational motion of the worm gear 212 into the linear motion of the linkage rack 110, realizing the power transmission of the drive mechanism 200 to the linkage rack 110. A cover plate 215 is bolted to the end of the sleeve 210 away from the power component 220. The cover plate 215 blocks the opening of the cavity 211, preventing external dust and debris from entering the cavity 211 and avoiding foreign objects from affecting the meshing transmission of the worm gear 212, gear 213 and linkage rack 110. Both the top and bottom ends of the sleeve 210 are bolted to connecting seats 216. The connecting seats 216 have an L-shaped plate structure. The bottom end of the connecting seat 216 is bolted to the side surface of the lower mold 100. The L-shaped connecting seat 216 can achieve a stable connection between the sleeve 210 and the lower mold 100, ensuring the stability of the drive mechanism 200 during operation and preventing transmission deviation due to vibration.

[0018] like Figures 2-4 As shown, specifically, the worm 222 meshes with the worm wheel 212. The worm 222 can transmit the power of the motor 2221 to the worm wheel 212, and the power deceleration and steering transmission are realized through the meshing of the worm wheel and worm. A sleeve cavity 2211 is opened on the end face of the movable seat 221 near the worm wheel 212. The worm 222 is rotatably connected in the sleeve cavity 2211. The sleeve cavity 2211 provides rotational support for the worm 222, ensuring the stability of the worm 222's axis during rotation and preventing the worm 222 from deviating and affecting the meshing accuracy with the worm wheel 212. The worm 222 is coaxially connected to the motor 2221, which is installed on the outer end of the movable seat 221. The motor 2221 provides rotational power to the worm 222, and the motor 2221 moves synchronously with the movable seat 221 to ensure the stability of the power transmission link.

[0019] like Figures 1-3As shown, a gap is formed between the movable seat 221 and the end plate 223. This gap provides lateral movement space for the movable seat 221, preventing rigid contact between the movable seat 221 and the end plate 223 from causing obstruction of movement. The movable seat 221 can move laterally on the sleeve 210. When the worm 222 and the worm wheel 212 mesh and jam, the movable seat 221 drives the worm 222 away from the worm wheel 212 on the sleeve 210, preventing the worm 222 from being forcibly rotated and causing damage to the worm wheel 212 and the worm 222. At the same time, it can disengage the jammed meshing pair, preventing the continuous drive of the motor 2221 from causing accelerated wear of the worm 222 and the worm wheel 212.

[0020] like Figures 2-5 As shown, in addition, a through-hole 214 is provided on the sleeve 210 near the end of the power component 220. The through-hole 214 provides an installation and movement channel for the movable seat 221, ensuring that the movable seat 221 can slide laterally along the sleeve 210. The front and rear edges of the top and bottom ends of the movable seat 221 are provided with protruding limiting flanges 2212. The limiting flanges 2212 are used to limit the movement direction of the movable seat 221 along the through-hole 214 while preventing the movable seat 221 from coming out of the through-hole 214. The limiting flanges 2212 can cooperate with the edge of the through-hole 214 of the sleeve 210 to limit the maximum movement distance of the movable seat 221 and prevent the movable seat 221 from coming out of the through-hole 214 and causing the transmission to be interrupted. The movable seat 221 is fitted into the opening 214 and slidably connected to the sleeve 210. The sliding connection ensures that the movable seat 221 has less resistance when moving laterally, and ensures that the movable seat 221 can move smoothly when stuck. The range of motion of the movable seat 221 is limited within the opening 214 by the end plate 223. The end plate 223 and the limiting protrusion 2212 cooperate to form a double limit, further ensuring the controllability of the range of motion of the movable seat 221.

[0021] like Figure 4 and Figure 5As shown, it is worth noting that several hanging rods 2213 are installed at the tail end of the movable seat 221. The hanging rods 2213 pass through the end plate 223 and are slidably connected to the end plate 223. The hanging rods 2213 can guide the movement direction of the movable seat 221, ensuring that the movable seat 221 moves laterally in a straight line and preventing the movable seat 221 from deviating. A baffle is provided at the tail end of the hanging rod 2213. The baffle has a circular plate structure and the outer diameter of the baffle is larger than the diameter of the hanging rod 2213. The baffle is used to prevent the hanging rod 2213 from coming out of the abutment plate 2215. The baffle can limit the relative position of the hanging rod 2213 and the abutment plate 2215, preventing the hanging rod 2213 from separating from the abutment plate 2215 during the movement. The rear of the movable seat 221 is also provided with a stop plate 2215, and a hanging rod 2213 passes through the stop plate 2215. A spring 2214 is sleeved on the hanging rod 2213 between the movable seat 221 and the stop plate 2215. The spring 2214 is in a compressed state. The compressed spring 2214 can apply a spring force to the movable seat 221 towards the worm gear 212, ensuring the stable meshing of the worm 222 and the worm gear 212 during normal operation. At the same time, it can absorb part of the overload force through compression deformation when jammed. A threaded post 2232 is threadedly connected to the end plate 223. The end of the threaded post 2232 abuts against the stop plate 2215. By rotating the threaded post 2232, the position of the stop plate 2215 can be adjusted, thereby adjusting the compression of the spring 2214 to adapt to the meshing preload requirements of the worm 222 and the worm gear 212 under different working conditions.

[0022] like Figure 5 and Figure 6 As shown, it is worth noting that a protruding post 2231 is provided on the outer end face of the end plate 223. A threaded post 2232 axially passes through the protruding post 2231 and is threadedly connected to the protruding post 2231. The protruding post 2231 can increase the installation length of the threaded post 2232, improve the stability of the connection between the threaded post 2232 and the end plate 223, and prevent the threaded post 2232 from tilting during adjustment. A handle 2233 is fixed to the outer end of the threaded post 2232. The handle 2233 can facilitate the operator to rotate the threaded post 2232 and reduce the difficulty of adjustment. A push plate 2234 is fixed to the inner end of the threaded post 2232. The push plate 2234 fits against the abutment plate 2215. The push plate 2234 can increase the contact area between the threaded post 2232 and the abutment plate 2215 and prevent the end of the threaded post 2232 from causing local compression damage to the abutment plate 2215.

[0023] It is worth noting that the motor 2221 involved in this utility model is existing conventional technology, and will not be described in detail in this utility model.

[0024] In this embodiment, the mold anti-jamming protection mechanism works as follows: First, rotating the handle 2233 drives the threaded column 2232 to rotate. The threaded column 2232 pushes the abutment plate 2215 to move along the hanging rod 2213. Adjusting the compression of the spring 2214 ensures that the movable seat 221 drives the worm 222 and worm wheel 212 to maintain stable engagement. Then, starting the motor 2221 drives the worm 222 to rotate. The worm 222 drives the worm wheel 212 to rotate. The worm wheel 212 drives the linkage rack 110 to move along the cavity 211 through the coaxial gear 213, thus enabling normal mold operation. Next, if the worm wheel 212 and worm 2215... 2. Due to wear and tear from long-term use, the meshing may become stuck. The force generated by the continued operation of the motor 2221 will push the movable seat 221 to move laterally along the through 214. The movable seat 221 compresses the spring 2214 and drives the worm 222 away from the worm wheel 212, causing the stuck meshing pair to disengage. Finally, after the stuck fault is cleared, the compressed spring 2214 returns to its original position, pushing the movable seat 221 and the worm 222 back to its initial position, re-engaging with the worm wheel 212, and the mold resumes normal operation. At the same time, the limiting flange 2212 and the end plate 223 always limit the range of motion of the movable seat 221 to prevent the movable seat 221 from disengaging from the sleeve 210.

[0025] 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 mold anti-jamming protection mechanism, comprising a lower mold (100), wherein a linkage rack (110) is mounted on the lower mold (100), characterized in that: A drive mechanism (200) is installed at the outer end of the lower mold (100). The drive mechanism (200) is used to drive the linkage rack (110) to move. The drive mechanism (200) includes a sleeve (210) and a power assembly (220) sleeved at the side end of the sleeve (210). The power assembly (220) includes a movable seat (221), a worm gear (222) rotatably connected in the movable seat (221), and a fixed end face of the sleeve (210). There is a gap between the end plate (223), the movable seat (221) and the end plate (223). The sleeve (210) is rotatably connected to the worm wheel (212). The worm (222) meshes with the worm wheel (212). The movable seat (221) can move laterally on the sleeve (210). When the worm (222) and the worm wheel (212) mesh and jam, the movable seat (221) drives the worm (222) away from the worm wheel (212) on the sleeve (210). The sleeve (210) has an opening (214) at one end near the power component (220). The movable seat (221) is fitted in the opening (214) and slidably connected to the sleeve (210). Several hanging rods (2213) are installed at the tail end of the movable seat (221). The hanging rods (2213) pass through the end plate (223) and are slidably connected to the end plate (223). The tail end of the movable seat (221) is also provided with a stop plate (2215). The hanging rods (2213) pass through the stop plate (2215). A spring (2214) is fitted on the hanging rods (2213) between the movable seat (221) and the stop plate (2215). A threaded post (2232) is threadedly connected to the end plate (223). The end of the threaded post (2232) abuts against the stop plate (2215).

2. The mold anti-jamming protection mechanism according to claim 1, characterized in that: The sleeve (210) has a cavity (211) inside. The end of the cavity (211) away from the power component (220) is open. The linkage rack (110) extends into the cavity (211). The worm gear (212) is coaxially fixedly connected to the gear (213), and the gear (213) meshes with the linkage rack (110).

3. The mold anti-jamming protection mechanism according to claim 1, characterized in that: The top and bottom ends of the sleeve (210) are both fixed with connecting seats (216) by bolts. The connecting seats (216) have an L-shaped plate structure, and the bottom end of the connecting seats (216) is fixed to the side surface of the lower mold (100) by bolts.

4. The mold anti-jamming protection mechanism according to claim 2, characterized in that: A cover plate (215) is bolted to one end of the sleeve (210) away from the power assembly (220), and the cover plate (215) covers the opening of the cavity (211).

5. The mold anti-jamming protection mechanism according to claim 1, characterized in that: A cavity (2211) is provided on the end face of the movable seat (221) near the worm gear (212). The worm (222) is rotatably connected in the cavity (2211). The worm (222) is coaxially connected to a motor (2221). The motor (2221) is installed on the outer end of the movable seat (221).

6. The mold anti-jamming protection mechanism according to claim 1, characterized in that: The movable seat (221) has protruding limiting flanges (2212) at both the front and rear edges of the top and bottom ends. The limiting flanges (2212) are used to limit the movable seat (221) along the movement direction of the opening (214) while preventing the movable seat (221) from coming out of the opening (214).

7. The mold anti-jamming protection mechanism according to claim 1, characterized in that: The tail end of the hanging rod (2213) is provided with a baffle. The baffle has a circular plate structure and the outer diameter of the baffle is larger than the diameter of the hanging rod (2213). The baffle is used to prevent the hanging rod (2213) from coming out of the abutment plate (2215).

8. The mold anti-jamming protection mechanism according to claim 1, characterized in that: The outer end face of the end plate (223) is provided with a protruding post (2231), and a threaded post (2232) axially passes through the protruding post (2231) and is threadedly connected to the protruding post (2231). A handle (2233) is fixed at the outer end of the threaded post (2232), and a push plate (2234) is fixed at the inner end of the threaded post (2232). The push plate (2234) is in contact with the abutment plate (2215).

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