A gold jewelry bead grinding machine

Abstract

This application relates to the field of bead grinding machine technology and discloses a gold jewelry bead grinding machine, including a machine casing and a worktable fixedly connected to its upper surface, and a lower mold set above the worktable. One end of the upper surface of the worktable has a material discharge groove penetrating the top wall of the machine casing. A support frame with a U-shaped structure is fixedly connected to the upper surface of the machine casing. This gold jewelry bead grinding machine achieves automatic unloading of beads through a lower mold flipping structure. Combined with the slope of the worktable and the guide of the inclined plate, an automatic discharge channel is formed, significantly improving unloading efficiency. The conveying mechanism adopts auger directional conveying, and with the internal self-lubricating coating, it ensures that the beads are transferred without damage. During material discharge, an infrared counting sensor counts the dropped beads in real time, facilitating comparison with the processed quantity by workers, enabling timely detection of abnormalities and handling of lost beads. Rubber pads buffer and blocking frames protect against collision damage and scattering risks, reducing precious metal loss.

Description

Technical Field

[0001] This application relates to the field of bead grinding machine technology, specifically a bead grinding machine for gold jewelry. Background Technology

[0002] Precious metals are considered valuable assets, so gold and other precious metals are made into jewelry, earrings and other ornaments. For example, gold is polished into beads using a bead grinder to make beaded gold jewelry.

[0003] An existing patent (publication number: CN219504130U) discloses a gold jewelry bead grinding machine, relating to the field of gold jewelry technology. It includes a fixed box with a processing mechanism inside. The processing mechanism includes an upper grinding disc, a lower grinding disc, a vibrating plate, and a first electric push rod fixedly connected to the bottom wall of the fixed box. A moving plate is fixedly connected to the top of the first electric push rod, and multiple first telescopic rods are fixedly connected to the upper surface of the moving plate. The top of each first telescopic rod is fixedly connected to the bottom surface of the vibrating plate, and multiple punching needles are fixedly connected to the upper surface of the vibrating plate. Through the arrangement of the fixed box and processing mechanism, it can grind gold into beads and then directly punch holes, avoiding the time wasted in existing bead grinding machines of transferring a large number of smaller gold beads from the grinding machine to the punching machine after grinding. This saves a significant amount of time in gold bead processing, thereby improving the production efficiency of gold jewelry and making it convenient to use.

[0004] The aforementioned bead grinding machine can grind gold into beads and then directly drill holes, avoiding the need for existing bead grinding machines to waste a lot of time moving a large number of smaller gold beads from the grinding machine to the drilling machine after grinding. This saves a lot of time in gold bead processing. However, after grinding, several beads are located inside the groove of the lower mold. When they are removed, workers often have to pick them out one by one, which is inconvenient. This not only increases labor intensity but also affects the grinding of subsequent beads and reduces production efficiency. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a gold jewelry bead grinding machine with advantages such as rapid material discharge and automatic counting, thus solving the problems mentioned in the background technology.

[0006] To achieve the above objectives, this application provides the following technical solution: a gold jewelry grinding machine, comprising a machine housing and a worktable fixedly connected to its upper surface and a lower mold disposed above the worktable. One end of the upper surface of the worktable is provided with a material discharge groove penetrating the inner top wall of the machine housing. A support frame is fixedly connected to the upper surface of the machine housing. The support frame has a U-shaped structure. A rotating shaft is rotatably connected to the front end and the rear end of the support frame. The two rotating shafts are located on the same axis. The adjacent ends of the two rotating shafts are fixedly connected to the outer surface of the lower mold for the purpose of flipping the lower mold to unload materials.

[0007] An inclined plate is installed between the two inner side walls of the chassis. The end of the inclined plate near the material discharge chute is higher than the other end. Two guide plates are fixedly connected to the upper surface of the inclined plate. The distance between the two guide plates near the material discharge chute is greater than the distance between the other ends. A through material discharge chute is opened on the upper surface of the bottom end of the inclined plate.

[0008] A conveying mechanism for conveying materials is provided below the inclined plate.

[0009] Furthermore, an upwardly extending blocking frame is fixedly connected to the edge of the upper surface of the workbench.

[0010] The above solution, through the setting of the blocking frame, can prevent the material from rolling to the sides and falling onto the ground after being poured out.

[0011] Furthermore, the upper surface of the workbench is lower at one end than at the other end near the material discharge chute.

[0012] The above scheme uses the slope of the workbench from high to low to allow the ground gold beads to automatically slide into the feeding trough under the action of gravity, reducing manual intervention.

[0013] Furthermore, one end of one of the rotating shafts is fixedly connected to a worm gear, and a shaft plate is fixedly connected to one side of the support frame adjacent to the worm gear. A worm is rotatably connected to the upper surface of the shaft plate and is perpendicular to the inner bottom wall of the support frame. The worm meshes with the worm gear, and a motor is installed at the bottom of the shaft plate. The output end of the motor is fixedly connected to one end of the worm.

[0014] The above scheme achieves tilting unloading of the lower mold by driving the worm gear with a worm wheel, and the self-locking feature prevents accidental return to the original position.

[0015] Furthermore, a rubber pad is fixedly connected to the upper surface of the inclined plate.

[0016] The above solution uses rubber pads to absorb the impact of the falling beads and prevent deformation.

[0017] Furthermore, the conveying mechanism includes a conveying frame, which is arranged along the length of the chassis and is fixedly connected to the chassis. One end of the conveying frame extends outside the chassis. The top of the conveying frame is funnel-shaped, and the bottom of the conveying frame is an arc-shaped inner wall. An auger shaft is rotatably connected between the inner side walls of the conveying frame. A conveying auger is fixedly connected to the outer surface of the auger shaft. A material drop pipe is fixedly connected to the bottom of the end of the conveying frame located outside the chassis. One end of the auger shaft is fixedly connected to the output end of an external power source.

[0018] The above solution enables the directional transport of gold beads from inside the machine to the discharge pipe, and the funnel-shaped structure can catch the gold beads falling from the discharge chute, preventing them from falling onto the bottom wall of the machine.

[0019] Furthermore, a monitoring frame is fixedly connected to the outer surface of the material discharge pipe, and a counting sensor is installed at the bottom of the monitoring frame.

[0020] The above method is used to count the dropped beads, so that it is easy to find them in time when the number of beads is inconsistent with the number processed in the lower mold.

[0021] Furthermore, a motor is fixedly installed on the upper surface of the workbench, and the output end of the motor is fixedly connected to the bottom of the support frame.

[0022] The above scheme uses a motor to drive the support frame to rotate, which in turn drives the lower mold to rotate, cooperating with the upper mold in the outside world to achieve reverse differential grinding between the lower mold and the upper mold.

[0023] Furthermore, an electric push rod is fixedly installed at the bottom of the lower mold, and a limit ring is fixedly connected to the inner bottom wall of the support frame. The limit ring and the electric push rod are on the same axis, and the output end of the electric push rod is slidably inserted into the limit ring.

[0024] With the above solution, after the lower mold is reset, the output end of the electric push rod is inserted into the limiting ring, which can ensure the horizontality of the lower mold and prevent the lower mold from flipping during the grinding process.

[0025] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0026] This gold jewelry bead grinding machine achieves automatic unloading of beads through a lower mold flipping structure. Combined with the slope of the worktable and the guide of the inclined plate, it forms an automatic discharge channel, which significantly improves the unloading efficiency. The conveying mechanism adopts auger directional conveying, and with the internal self-lubricating coating, it ensures that the beads are transferred without damage. During the dropping process, the infrared counting sensor counts the dropped beads in real time, which is convenient for workers to compare with the processed quantity and to promptly detect abnormalities and handle lost beads. Rubber pads buffer and blocking frames protect the beads, reducing the risk of collision damage and scattering, and reducing the loss of precious metals. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this application. Figure 1 ;

[0028] Figure 2 This is a three-dimensional schematic diagram of the overall structure of this application. Figure 2 ;

[0029] Figure 3 This is a cross-sectional view of the overall structure of this application;

[0030] Figure 4 This is a structural diagram of the support frame for this application;

[0031] Figure 5This is a diagram of the inclined plate structure of this application;

[0032] Figure 6 This is a structural diagram of the conveying mechanism in this application;

[0033] Figure 7 This is a structural diagram of the monitoring frame for this application.

[0034] In the picture:

[0035] 1. Chassis; 2. Worktable; 201. Material drop chute; 202. Blocking frame; 3. Lower mold; 4. Support frame; 5. Rotating shaft; 6. Inclined plate; 601. Material drop chute; 7. Guide plate;

[0036] 8. Conveying mechanism; 801. Conveying frame; 802. Screw shaft; 803. Conveying auger; 804. Discharge pipe;

[0037] 9. Worm gear; 10. Shaft plate; 11. Worm; 12. Motor; 13. Rubber pad; 14. Monitoring frame; 15. Counting sensor; 16. Motor; 17. Electric actuator; 18. Limit ring. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] Please see Figure 1 , Figure 2 and Figure 3 This embodiment of a gold jewelry bead grinding machine includes a machine housing 1 and a workbench 2 fixedly connected to its upper surface, and a lower mold 3 disposed above the workbench 2. One end of the upper surface of the workbench 2 is provided with a material discharge groove 201 that penetrates the inner top wall of the machine housing 1. A support frame 4 is fixedly connected to the upper surface of the machine housing 1. The support frame 4 has a U-shaped structure. A rotating shaft 5 is rotatably connected to the front end and the rear end of the support frame 4, respectively. The two rotating shafts 5 are located on the same axis. The adjacent ends of the two rotating shafts 5 are fixedly connected to the outer surface of the lower mold 3 for the purpose of flipping the lower mold 3 to unload materials. By flipping the lower mold 3, when the bead grinding work is completed, the internal materials can be poured out, avoiding the tedious process of workers taking them out one by one, and facilitating subsequent processing.

[0040] Please see Figure 1 , Figure 2 and Figure 3An upward-extending blocking frame 202 is fixedly connected to the edge of the upper surface of the workbench 2. The blocking frame 202 prevents the material from rolling to the sides and falling onto the ground after it is poured out. The upper surface of the workbench 2 is lower at one end than the other end, with a slope of 3° to 5°. The slope of the workbench 2 from high to low allows the ground gold beads to slide automatically into the dropping trough 201 under the action of gravity, reducing manual intervention.

[0041] Please see Figure 1 , Figure 2 and 4 One end of a rotating shaft 5 is fixedly connected to a worm gear 9. A shaft plate 10 is fixedly connected to one side of a support frame 4 adjacent to the worm gear 9. A worm 11, perpendicular to the inner bottom wall of the support frame 4, is rotatably connected to the upper surface of the shaft plate 10. The worm 11 meshes with the worm gear 9. A motor 12 is installed at the bottom of the shaft plate 10. The output end of the motor 12 is fixedly connected to one end of the worm 11. The worm gear 9 is driven by the worm 11 to achieve tilting unloading of the lower mold 3, and the self-locking feature prevents accidental return. A motor 16 is fixedly installed on the upper surface of the worktable 2. The output end of the motor 16 is fixedly connected to the bottom of the support frame 4. The drive support frame 4 rotates, which in turn drives the lower mold 3 to rotate, cooperating with the external upper mold to achieve reverse differential grinding between the lower mold 3 and the upper mold. An electric push rod 17 is fixedly installed at the bottom of the lower mold 3, and a limit ring 18 is fixedly connected to the inner bottom wall of the support frame 4. The limit ring 18 and the electric push rod 17 are on the same axis, and the output end of the electric push rod 17 is slidably inserted into the limit ring 18. After the lower mold 3 is reset, the output end of the electric push rod 17 is inserted into the limit ring 18, which can ensure the levelness of the lower mold 3 and prevent the lower mold 3 from flipping during the grinding process. Combined with the self-locking characteristics of the worm gear 9 and the worm 11, a double protection is formed.

[0042] Please see Figure 1 , Figure 2 and Figure 5 An inclined plate 6 is provided between the two inner side walls of the casing 1. The end of the inclined plate 6 near the material drop chute 201 is higher than the other end. Two guide plates 7 are fixedly connected to the upper surface of the inclined plate 6. The distance between the two guide plates 7 near the material drop chute 201 is greater than the distance between the other ends. A through drop chute 601 is opened on the upper surface of the bottom end of the inclined plate 6. The ball is guided to roll into the drop chute 601 by the inclination angle of the inclined plate 6 and the action of gravity. A rubber pad 13 is fixedly connected to the upper surface of the inclined plate 6. The rubber pad 13 absorbs the impact force of the ball falling and prevents deformation.

[0043] Please see Figure 1 , Figure 2 and Figure 6Below the inclined plate 6, a conveying mechanism 8 for conveying materials is provided. The conveying mechanism 8 includes a conveying frame 801, which is arranged along the length of the housing 1 and is fixedly connected to the housing 1. One end of the conveying frame 801 extends outside the housing 1, and the top of the conveying frame 801 is funnel-shaped. The conveying frame 801 and the auger are coated with PTFE (polytetrafluoroethylene), which reduces friction damage to the gold beads through self-lubricating properties and avoids metal contamination. The bottom of the conveying frame 801 is an arc-shaped inner end. A screw conveyor shaft 802 is rotatably connected between the inner wall of the conveyor frame 801 and the outer surface of the screw conveyor shaft 802. A conveying screw conveyor 803 is fixedly connected to the outer surface of the screw conveyor shaft 802. A material drop pipe 804 is fixedly connected to the bottom of one end of the conveyor frame 801 located outside the machine box 1. One end of the screw conveyor shaft 802 is fixedly connected to the output end of the external power source, so as to realize the directional conveying of gold beads from the inside of the machine box 1 to the material drop pipe 804. The funnel-shaped structure can receive the gold beads falling from the drop trough 601 and prevent them from falling onto the bottom wall of the machine box 1.

[0044] Please see Figure 1 , Figure 2 and Figure 7 A monitoring frame 14 is fixedly connected to the outer surface of the feeding tube 804. A counting sensor 15 is installed at the bottom of the monitoring frame 14, specifically an infrared photoelectric counter. By monitoring the number of times the light is blocked when the bead falls, the output is counted in real time and projected onto an external display screen through an external control system. This allows users to count and inventory whether the number of processed beads is consistent, facilitating timely processing. It is used to count the dropped beads and facilitates timely identification when the number of beads is inconsistent with the number processed in the lower mold 3.

[0045] The working principle of the above embodiment is as follows: The motor 16 on the upper surface of the workbench 2 is powered on and operates. Its output end drives the support frame 4 to rotate around its own axis. Since the lower mold 3 and the support frame 4 are fixedly connected through the rotating shaft 5, the rotation of the support frame 4 directly drives the lower mold 3 to rotate synchronously. The upper mold outside grinds the lower mold 3 in the opposite direction of rotation and at a different speed. Through the reverse differential motion, the gold raw material is repeatedly squeezed and rubbed between the contact surfaces of the lower mold 3 and the upper mold, gradually forming spherical beads. When the beads reach the preset size, the equipment receives a stop command, the motor 16 stops rotating, the lower mold 3 stops rotating, the electric push rod at the bottom of the lower mold 3 is powered on and retracts, and its output end is pulled out from the limiting ring 18 on the inner bottom wall of the support frame 4, releasing the horizontal limit on the lower mold 3. At this time, the lower mold 3 is only connected to the support frame 4 through the rotating shaft 5 and has the freedom to flip. The motor 12 at the bottom of the shaft plate 10 is powered on, and its output end drives the worm gear 11 to rotate. Because the worm 11 meshes with the worm wheel 9 at the end of the rotating shaft 5, the rotation of the worm 11 is converted into the rotational motion of the worm wheel 9 through gear transmission. The worm wheel 9 drives the rotating shaft 5 and the lower mold 3 to rotate around the axis. At this time, the ball in the lower mold 3 is released from the mold cavity under the action of gravity and tilts towards the material discharge groove 201 of the worktable 2. The transmission characteristics of the worm wheel 9 and the worm 11 have a one-way self-locking function, that is, the worm 11 can drive the worm wheel 9 to rotate, but the worm wheel 9 cannot drive the worm 11 in the opposite direction to ensure that the lower mold 3 will not accidentally return to its original position due to the weight of the ball or external disturbance during the unloading process, thus ensuring operational safety. The end of the upper surface of the worktable 2 closest to the material discharge groove 201 is lower than the other end. One end of the material trough 201 is lower than the other end. The upward-extending blocking frame 202 on the edge of the workbench 2 forms a shield to prevent the beads from scattering to both sides during the unloading process, thus avoiding the loss of precious metals. The beads that fall into the material trough 201 further fall onto the inclined plate 6 inside the machine box 1. The inclined plate 6 is set at an angle, and the two guide plates 7 on its upper surface form a "trumpet mouth" structure to gather the beads and guide them to the material trough 601 at the bottom of the inclined plate 6. The rubber pad 13 on the upper surface of the inclined plate 6 absorbs the impact force when the beads fall, preventing the gold from being deformed or scratched due to collision. The material trough 601 at the bottom of the inclined plate 6 is aligned with the funnel-shaped top of the conveying mechanism 8 below, and the beads fall into the conveying frame 801 through the material trough 601.The funnel-shaped structure expands the receiving area, preventing the beads from scattering onto the bottom wall of the housing 1. The auger shaft 802 inside the conveyor frame 801 is pushed to one end outside the housing 1 by an external power source. The surfaces of the conveyor frame 801 and the auger shaft 802 are coated with polytetrafluoroethylene (PTFE) to reduce friction between the beads and the metal surface and prevent metal contamination, utilizing its self-lubricating properties. The bottom of the end of the conveyor frame 801 located outside the housing 1 is connected to the discharge pipe 804. The beads are finally discharged to an external container through the discharge pipe 804, completing the directional transfer from inside the housing 1 to the outside. An infrared photoelectric counting sensor 15 is installed on the monitoring frame 14 on the outer surface of the discharge pipe 804. When the beads fall through the discharge pipe 804, the light path between the sensor's transmitter and receiver is blocked, and the sensor... The device detects the number of times the light path is blocked, counts the number of dropped beads in real time, and transmits the signal to the external control system. The external system projects the counting result onto the display screen, which allows the operator to check whether the processed quantity is consistent with the actual output. If the counting result does not match the preset processing quantity in the lower mold 3, the worker can find out and make corrections. After unloading and tilting, the motor 12 reverses to drive the worm gear 11, which drives the lower mold 3 to rotate to a horizontal position. The electric push rod 17 at the bottom of the lower mold 3 extends again, and its output end is inserted into the limiting ring 18 of the support frame 4 to form a mechanical limit. The self-locking characteristics of the electric push rod 17 and the worm gear 9 and worm gear 11 work together to ensure that the lower mold 3 is absolutely horizontal during the grinding process, and to avoid the mold tilting due to vibration or external force.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gold jewelry grinding machine, comprising a machine housing (1) and a worktable (2) fixedly connected to its upper surface, and a lower mold (3) disposed above the worktable (2), characterized in that: The upper surface of the workbench (2) is provided with a material drop groove (201) that penetrates the inner top wall of the machine box (1). A support frame (4) is fixedly connected to the upper surface of the machine box (1). The support frame (4) has a U-shaped structure. A rotating shaft (5) is rotatably connected to the front end and the rear end of the support frame (4). The two rotating shafts (5) are located on the same axis. The adjacent ends of the two rotating shafts (5) are fixedly connected to the outer surface of the lower mold (3) for the purpose of flipping the lower mold (3) to unload materials. An inclined plate (6) is provided between the two inner side walls of the chassis (1). The end of the inclined plate (6) near the material drop chute (201) is higher than the other end. Two guide plates (7) are fixedly connected to the upper surface of the inclined plate (6). The distance between the two guide plates (7) near the material drop chute (201) is greater than the distance between the other ends. A through drop chute (601) is provided on the upper surface of the bottom end of the inclined plate (6). A conveying mechanism (8) for conveying materials is provided below the inclined plate (6).

2. The gold jewelry bead grinding machine according to claim 1, characterized in that: An upwardly extending blocking frame (202) is fixedly connected to the edge of the upper surface of the workbench (2).

3. A gold jewelry bead grinding machine according to claim 2, characterized in that: The upper surface of the workbench (2) is lower at one end near the material drop chute (201) than at the other end.

4. A gold jewelry bead grinding machine according to claim 1, characterized in that: One end of one of the rotating shafts (5) is fixedly connected to a worm gear (9), and a shaft plate (10) is fixedly connected to one side of the support frame (4) adjacent to the worm gear (9). A worm (11) is rotatably connected to the upper surface of the shaft plate (10) and is perpendicular to the inner bottom wall of the support frame (4). The worm (11) meshes with the worm gear (9). A motor (12) is installed at the bottom of the shaft plate (10), and the output end of the motor (12) is fixedly connected to one end of the worm (11).

5. A gold jewelry bead grinding machine according to claim 1, characterized in that: A rubber pad (13) is fixedly connected to the upper surface of the inclined plate (6).

6. A gold jewelry bead grinding machine according to claim 1, characterized in that: The conveying mechanism (8) includes a conveying frame (801), which is arranged along the length of the housing (1). The conveying frame (801) is fixedly connected to the housing (1). One end of the conveying frame (801) extends outside the housing (1). The top of the conveying frame (801) is funnel-shaped, and the bottom of the conveying frame (801) is an arc-shaped inner wall. An auger shaft (802) is rotatably connected between the inner walls of the conveying frame (801). A conveying auger (803) is fixedly connected to the outer surface of the auger shaft (802). A material drop pipe (804) is fixedly connected to the bottom of the end of the conveying frame (801) located outside the housing (1). One end of the auger shaft (802) is fixedly connected to the output end of an external power source.

7. A gold jewelry bead grinding machine according to claim 6, characterized in that: A monitoring frame (14) is fixedly connected to the outer surface of the feed pipe (804), and a counting sensor (15) is installed at the bottom of the monitoring frame (14).

8. A gold jewelry bead grinding machine according to claim 1, characterized in that: A motor (16) is fixedly installed on the upper surface of the workbench (2), and the output end of the motor (16) is fixedly connected to the bottom of the support frame (4).

9. A gold jewelry bead grinding machine according to claim 1, characterized in that: An electric push rod (17) is fixedly installed at the bottom of the lower mold (3), and a limit ring (18) is fixedly connected to the inner bottom wall of the support frame (4). The limit ring (18) and the electric push rod (17) are on the same axis, and the output end of the electric push rod (17) is slidably inserted into the limit ring (18).

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