A parts quantification conveyor

Abstract

This invention discloses a quantitative conveying device for parts, belonging to the field of parts conveying equipment. The device includes a housing with open top and bottom. A movable weighing base is located inside the housing, and a weighing plate is positioned above it. A weighing sensor is located between the weighing plate and the weighing base. A retaining ring is slidably positioned at the top opening of the housing, and its downward movement is limited. A conical guide plate slides in contact with the inner wall of the retaining ring and is slidably mounted on the weighing plate. The diameters of both the weighing base and the weighing plate are smaller than the inner diameter of the housing. When the weighing plate moves upward and contacts the bottom of the retaining ring, a weighing cavity is formed; when the weighing plate moves downward and separates from the bottom of the retaining ring, a discharge channel is formed. This invention, through the combination of a movable weighing plate, a conical guide plate, and a floating retaining ring, facilitates the switching between weighing and discharge states. The overall structure of the device is simple, achieving quantitative weighing of parts before they enter the heat treatment process.

Description

Technical Field

[0001] This invention relates to the field of parts conveying equipment, and particularly to a parts quantitative conveying device. Background Technology

[0002] In the heat treatment process of mechanical parts, especially for sleeve-type parts of different specifications, they usually need to be fed into the heating furnace in batches and quantities to ensure the consistency of heat treatment effect and process stability.

[0003] In existing technologies, parts are mainly fed using belt conveyors and bucket elevators. For example, Chinese patent CN209973458U discloses a conveying device for parts to be quenched, which uses magnetic force to attract parts to a conveyor belt and lift them for automatic feeding. This type of device can effectively transport parts from a low position to the inlet of a high-level heating furnace, solving the problem of low efficiency in manual handling.

[0004] However, the aforementioned and current similar conveying devices typically focus on solving the "conveyance" problem and lack a quantitative conveying structure. In the actual production of heat-treated parts, upstream material is usually continuous, while heating furnaces typically require batch and quantitative feeding to ensure stable furnace temperature and uniform heating. If parts are directly fed into the heating furnace by a conveyor belt, it is difficult to control the amount of parts conveyed, which can easily lead to inconsistent quantities of parts entering the furnace in each batch. This may result in problems such as uneven hardness and large batch-to-batch quality differences during heat treatment. Summary of the Invention

[0005] This invention provides a quantitative conveying device for parts, which can solve the problem in the prior art that the lack of a quantitative conveying structure when conveying parts to a heating furnace can easily lead to inconsistent feeding quantities of parts, which may affect the heat treatment heat.

[0006] A part quantitative conveying device includes a housing with open top and bottom. A weighing base that can move up and down is provided inside the housing. A weighing plate is provided above the weighing base. A weighing sensor is provided between the weighing plate and the weighing base. A retaining ring is slidably provided at the top opening of the housing, and the downward movement of the retaining ring is limited. A conical guide plate slides in contact with the inner wall of the retaining ring. The guide plate is slidably positioned on the weighing plate. The diameters of the weighing base and the weighing plate are both smaller than the inner diameter of the housing, forming a feeding gap. When the weighing plate moves upward and contacts the bottom of the retaining ring, a weighing cavity is formed. When the weighing plate moves downward and separates from the bottom of the retaining ring, a feeding channel is formed.

[0007] Preferably, a mounting bracket is fixed on the inner wall of the housing, a first cylinder is fixed on the mounting bracket, and the weighing base is fixed on the drive shaft of the first cylinder.

[0008] Preferably, a plurality of second cylinders are uniformly fixed on the weighing plate, and the guide plate is fixed on the drive shaft of the second cylinders.

[0009] Preferably, a hopper is fixedly provided at the bottom of the housing, and a discharge pipe is fixedly provided at the bottom of the hopper.

[0010] Preferably, a plurality of guide rods are uniformly fixed on the top of the housing, a plurality of connecting plates are uniformly fixed on the retaining ring, the connecting plates are slidably connected with the corresponding guide rods, and a limiting block is fixed on each guide rod and below the connecting plate.

[0011] Preferably, it also includes a belt conveyor, the discharge port of which is located above the retaining ring.

[0012] Preferably, it also includes a vibrating feeder, the discharge port of which is located above the feed inlet of the belt elevator.

[0013] Preferably, a horizontally arranged baffle is inserted into the discharge pipe, and a fourth cylinder is provided on one side of the discharge pipe. The baffle is fixedly connected to the drive shaft of the fourth cylinder.

[0014] Preferably, a third cylinder is fixed on the mounting bracket, and a mounting rod extending to the discharge pipe is fixed on the drive shaft of the third cylinder, and a plurality of arch-breaking rods are fixed on the mounting rod.

[0015] Preferably, a soft pad is fixed on the top of the guide plate. This invention provides a quantitative conveying device for parts, which has the following advantages: 1. By incorporating a liftable weighing plate, a conical guide plate, and a floating retaining ring, the system allows for convenient switching between weighing and unloading modes within the housing. During weighing, the weighing plate rises and closes with the retaining ring to form a sealed weighing chamber; during unloading, the weighing plate descends and separates from the retaining ring, allowing the material to be discharged through the unloading channel and gap. The overall structure of the equipment is simple, efficiently achieving precise weighing of parts before they enter the heat treatment process. This avoids drastic fluctuations in furnace temperature caused by variations in the number of parts, thus ensuring the heat treatment quality of each batch of parts.

[0016] 2. By setting a conical guide plate and a soft pad, not only can the impact of the parts being dropped be buffered, but the conical surface can also be used to evenly distribute the material in all directions, effectively avoiding the eccentric load error caused by the accumulation of material on one side, while making it easier for the parts to slide down along the conical surface of the guide plate. 3. By setting up an openable and closable discharge pipe baffle, the weighing and discharging actions are coordinated. When the hopper baffle is closed, the weighing component can immediately reset for the next round of weighing, while the material temporarily stored in the hopper can be discharged as needed through the opening and closing of the baffle later. This graded processing method ensures continuous material supply and helps to support the continuous operation of the production line. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of a quantitative conveying device for parts provided by the present invention. Figure 1 ; Figure 2 A schematic diagram of the structure of a quantitative conveying device for parts provided by the present invention. Figure 2 ; Figure 3 A schematic diagram of the housing and retaining ring structure of a parts quantitative conveying device provided by the present invention; Figure 4 The present invention provides a quantitative conveying device for parts. Figure 3 Schematic diagram of cross-section structure; Figure 5 The present invention provides a quantitative conveying device for parts. Figure 4 Front view structural diagram; Figure 6 The present invention provides a quantitative conveying device for parts. Figure 2 Enlarged structural diagram at point A in the middle; Figure 7 The present invention provides a quantitative conveying device for parts. Figure 4 Enlarged structural diagram at point B.

[0018] Explanation of reference numerals in the attached figures: 100. Housing; 101. Mounting bracket; 102. First cylinder; 200. Weighing base; 201. Weighing sensor; 202. Weighing plate; 300. Second cylinder; 301. Guide plate; 3011. Soft pad; 400. Retaining ring; 401. Connecting plate; 402. Limiting block; 403. Guide rod; 500. Feed hopper; 501. Discharge pipe; 5011. Baffle; 600. Third cylinder; 601. Mounting rod; 6011. Arch breaking rod; 700. Belt elevator; 800. Vibrating feeder; 900. Fourth cylinder. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0020] like Figures 1 to 7As shown in the figure, the present invention provides a quantitative conveying device for parts, mainly used for quantitative weighing and conveying of sleeve-type parts before heat treatment. The device includes: a housing 100, a weighing assembly (weighing base 200, weighing sensor 201, weighing plate 202), a guiding assembly (second cylinder 300, guiding plate 301), a retaining ring 400, a feeding assembly (feeding hopper 500, discharge pipe 501, baffle 5011, fourth cylinder 900), an arch-breaking assembly (third cylinder 600, mounting rod 601, arch-breaking rod 6011), and a feeding assembly (belt elevator 700, vibrating feeder 800). This device is not only suitable for sleeve-type parts, but also for the quantitative conveying of other parts, such as ring-shaped and short shaft-type parts.

[0021] By utilizing the cooperation of a liftable weighing plate 202, a conical guide plate 301, and a floating retaining ring 400, convenient switching between weighing and unloading states is achieved within the housing 100. During weighing, the weighing plate 202 rises and closes with the retaining ring 400 to form a closed weighing chamber; during unloading, the weighing plate 202 descends and separates from the retaining ring 400, allowing the material to be discharged through the unloading channel and gap. The overall structure of the equipment is simple, efficiently achieving quantitative weighing of parts before they enter the heat treatment process, avoiding drastic fluctuations in furnace temperature caused by varying part quantities, and helping to ensure the heat treatment quality of each batch of parts.

[0022] In some specific implementation plans, such as Figure 4 and Figure 5 As shown. The top and bottom of the housing 100 are open structures. A mounting bracket 101 is fixed on the inner wall of the housing 100, and a first cylinder 102 is fixed on the mounting bracket 101. A weighing base 200 that can move up and down is provided inside the housing 100. The weighing base 200 is fixed on the drive shaft of the first cylinder 102 and can move up and down under the drive of the first cylinder 102. A weighing plate 202 is provided above the weighing base 200. A weighing sensor 201 is fixedly arranged between the weighing plate 202 and the weighing base 200. The diameters of the weighing base 200 and the weighing plate 202 are both smaller than the inner diameter of the housing 100, and an annular feeding gap is formed between them and the inner wall of the housing 100. To ensure the smooth up and down movement of the weighing base 200, multiple telescopic rods are evenly arranged between the mounting bracket 101 and the weighing base 200.

[0023] When the weighing plate 202 and the retaining ring 400 contact to form a weighing cavity, the total weight of the parts in the cavity is detected in real time by the weighing sensor 201. The external controller receives the signal from the weighing sensor 201 and calculates the total weight. When the total weight reaches the preset quantitative threshold, the controller issues a command to stop the belt elevator 700 and the vibrating feeder 800, thus completing the weighing stage.

[0024] During weighing, the weight of the second cylinder 300, the guide plate 301, and the retaining ring 400 is applied to the weighing plate 202. The zero-scale data of the weighing sensor 201 detected by the controller has already removed the tare weight of these components, ensuring that the weighing result is only the net weight of the parts.

[0025] After weighing is completed, the material is unloaded. The controller controls the first cylinder 102 to drive the weighing base 200 to move downward, and the weighing plate 202 descends accordingly. The weighing plate 202 separates from the bottom of the retaining ring 400, and at the same time, the annular unloading gap between the outer edge of the weighing plate 202 and the inner wall of the housing 100 and the unloading channel between the weighing plate 202 and the bottom of the retaining ring 400 are connected, forming an unloading path to fall into the unloading hopper 500.

[0026] In some specific implementation plans, such as Figure 4 , Figure 5 and Figure 7 As shown. A retaining ring 400 is slidably provided at the top opening of the housing 100, and the downward movement of the retaining ring 400 is limited. Specifically: a plurality of guide rods 403 are uniformly fixed at the top of the housing 100, and a plurality of connecting plates 401 are uniformly fixed on the retaining ring 400. The connecting plates 401 are slidably connected to the corresponding guide rods 403. A limiting block 402 is fixed on each guide rod 403 and below the connecting plate 401. The retaining ring 400 can slide up and down along the guide rods 403, but its downward movement is limited to a preset position by the limiting block 402. When the weighing plate 202 moves upward and contacts the bottom of the retaining ring 400, a weighing cavity is formed. When the weighing plate 202 moves downward and separates from the bottom of the retaining ring 400, a feeding channel is formed.

[0027] The first cylinder 102 drives the weighing base 200 to rise, causing the upper surface of the weighing plate 202 to contact the bottom of the retaining ring 400. The continuous upward movement of the weighing plate 202 separates the connecting plate 401 on the retaining ring 400 from the limiting block 402, preventing the limiting block 402 from supporting the connecting plate 401 and the retaining ring 400 and affecting the weighing accuracy of the load cell 201. At this time, the inner wall of the retaining ring 400 and the outer conical surface of the guide plate 301 together form a closed weighing cavity for receiving parts conveyed by the belt conveyor 700.

[0028] In some specific implementation plans, such as Figure 4 and Figure 5 As shown. A conical guide plate 301 slides in contact with the inner wall of the retaining ring 400. Multiple second cylinders 300 are evenly fixed on the weighing plate 202. The guide plate 301 is fixed on the drive shaft of the second cylinders 300, so that the guide plate 301 can move up and down. A soft pad 3011 is fixed on the top of the guide plate 301 to buffer the impact of falling material.

[0029] Because of the height difference between the discharge port of the belt elevator 700 and the guide plate 301, when the parts fall freely into the weighing chamber, to reduce impact damage during the fall and the influence of the weighing sensor 201, the second cylinder 300 drives the guide plate 301 to rise to a position slightly lower than the top of the retaining ring 400, thus reducing the height difference during the fall. As the material accumulates inside the weighing chamber, the second cylinder 300 controls the guide plate 301 to move downward synchronously. The vibrating feeder 800 and the belt elevator 700 are started, and the parts fall sequentially into the retaining ring 400 through the discharge port of the belt elevator 700. The parts first land on the soft pad 3011 on top of the guide plate 301, and after buffering the impact, they slide evenly around the perimeter along the outer conical surface of the conical guide plate 301, eventually accumulating in the weighing chamber. Utilizing the conical dispersing effect of the guide plate 301, the parts are evenly distributed on the weighing plate 202, which helps to effectively reduce the off-center weighing error.

[0030] In some specific implementation plans, such as Figure 2 , Figure 5 and Figure 6 As shown. A hopper 500 is fixedly installed at the bottom of the housing 100, and a discharge pipe 501 is fixedly installed at the bottom of the hopper 500. A horizontally arranged baffle 5011 is inserted into the discharge pipe 501. A sliding groove is opened on the discharge pipe 501 to cooperate with the baffle 5011. A fourth cylinder 900 is provided on one side of the discharge pipe 501. The fourth cylinder 900 is fixed on the frame of the belt elevator 700. The baffle 5011 is fixedly connected to the drive shaft of the fourth cylinder 900. The opening and closing of the discharge pipe 501 is achieved by the drive of the fourth cylinder 900.

[0031] The discharge pipe 501 is configured to be openable and closable. When the baffle 5011 closes the discharge pipe 501, the parts are temporarily stored in the hopper 500 before being conveyed to the heat treatment process. At this time, after the weighing plate 202 and other components are reset, the conveying and weighing operation can be resumed. Then, the fourth cylinder 900 drives the baffle 5011 to be pulled out, the discharge pipe 501 opens, and the parts temporarily stored in the hopper 500 are discharged before being fed into the hopper 500, ensuring continuous material supply. Alternatively, the discharge pipe 501 can be set to a normally open state, and the parts after a single weighing can be directly discharged into the heating furnace or the next conveying device.

[0032] In some specific implementation plans, such as Figure 1 As shown in the diagram, the device also includes a belt conveyor 700 and a vibrating feeder 800. The discharge port of the belt conveyor 700 is located above the retaining ring 400, and the discharge port of the vibrating feeder 800 is located above the inlet of the belt conveyor 700. The vibrating feeder 800 delivers the sleeve to the belt conveyor 700, which then lifts the sleeve to the inlet of the housing 100 at a higher position.

[0033] In some specific implementation plans, such as Figure 4 , Figure 5 and Figure 7 As shown. A third cylinder 600 is fixed on the mounting bracket 101. A mounting rod 601 extending to the discharge pipe 501 is fixed on the drive shaft of the third cylinder 600. Multiple arch-breaking rods 6011 are fixed on the mounting rod 601. The arch-breaking rods 6011 are branched.

[0034] If a part gets stuck in the hopper 500 or the discharge pipe 501, the third cylinder 600 drives the mounting rod 601 to move up and down reciprocally, and the arch-breaking rod 6011 stirs at this point, breaking the blockage structure.

[0035] To facilitate understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution will now be briefly explained in conjunction with specific application scenarios: The first cylinder 102 drives the weighing base 200 to rise, causing the upper surface of the weighing plate 202 to contact the bottom of the retaining ring 400. The weighing plate 202 continues to move upward, lifting the retaining ring 400 and separating the connecting plate 401 from the limiting block 402, preventing the limiting block 402 from supporting the retaining ring 400 and affecting weighing accuracy. At this time, the inner wall of the retaining ring 400 and the outer conical surface of the guide plate 301 together form a closed weighing cavity. To reduce the impact of falling material, the second cylinder 300 drives the guide plate 301 to rise to a position slightly lower than the top of the retaining ring 400. The vibrating feeder 800 and the belt elevator 700 are started. The parts fall into the weighing cavity through the outlet of the belt elevator 700, first touching the soft pad 3011 on the top of the guide plate 301. After buffering, they slide evenly around the perimeter along the conical outer surface, causing the parts to be evenly distributed in a ring on the weighing plate 202, reducing off-center loading errors.

[0036] During the weighing process, the second cylinder 300 controls the guide plate 301 to move downward synchronously according to the material accumulation height in the cavity, maintaining a stable drop height difference. The weighing sensor 201 detects the total weight in real time, and the controller receives the signal. When the total weight reaches a preset threshold, the controller stops the belt elevator 700 and the vibrating feeder 800, and the weighing stage is completed. The controller controls the first cylinder 102 to drive the weighing base 200 to move downward, and the weighing plate 202 descends accordingly. The weighing plate 202 separates from the bottom of the retaining ring 400, and at the same time, the annular discharge gap between the outer edge of the weighing plate 202 and the inner wall of the housing 100, as well as the channel between the weighing plate 202 and the bottom of the retaining ring 400, are connected, forming a continuous discharge path.

[0037] The parts slide down the conical surface of the guide plate 301, fall into the discharge hopper 500 through the discharge path, and are temporarily stored at the discharge pipe 501 (with the baffle 5011 in the closed state). If continuous feeding is required, the fourth cylinder 900 can drive the baffle 5011 to be pulled out, the discharge pipe 501 to be opened, and the parts are discharged to the heating furnace or the next conveying device. After the discharge is completed, the baffle 5011 is reset and closed, the first cylinder 102 drives the weighing plate 202 to rise, and the device enters the next weighing cycle.

[0038] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A part quantitative conveying device, comprising a housing (100), characterized in that, The housing (100) has an open structure at both the top and bottom. A weighing base (200) that can move up and down is provided inside the housing (100). A weighing plate (202) is provided above the weighing base (200). A weighing sensor (201) is provided between the weighing plate (202) and the weighing base (200). A retaining ring (400) is slidably provided at the top opening of the housing (100), and the downward movement of the retaining ring (400) is limited. 00) A conical guide plate (301) is slidably contacted on the inner wall. The guide plate (301) is movably mounted on the weighing plate (202). The diameters of the weighing base (200) and the weighing plate (202) are both smaller than the inner diameter of the shell (100) to form a material discharge gap. When the weighing plate (202) moves upward and contacts the bottom of the retaining ring (400), it forms a weighing cavity. When the weighing plate (202) moves downward and separates from the bottom of the retaining ring (400), it forms a material discharge channel.

2. The part quantitative conveying device as described in claim 1, characterized in that, A mounting bracket (101) is fixed on the inner wall of the housing (100), and a first cylinder (102) is fixed on the mounting bracket (101). The weighing base (200) is fixed on the drive shaft of the first cylinder (102).

3. The part quantitative conveying device as described in claim 2, characterized in that, Multiple second cylinders (300) are uniformly fixed on the weighing plate (202), and the guide plate (301) is fixed on the drive shaft of the second cylinders (300).

4. The part quantitative conveying device as described in claim 3, characterized in that, The bottom of the housing (100) is fixedly provided with a feeding hopper (500), and the bottom of the feeding hopper (500) is fixedly provided with a discharge pipe (501).

5. The part quantitative conveying device as described in claim 1, characterized in that, Multiple guide rods (403) are uniformly fixed on the top of the housing (100), and multiple connecting plates (401) are uniformly fixed on the retaining ring (400). The connecting plate (401) is slidably connected with the corresponding guide rod (403). A limiting block (402) is fixed on the guide rod (403) and below the connecting plate (401).

6. The part quantitative conveying device as described in claim 5, characterized in that, It also includes a belt elevator (700), the discharge port of which is located above the retaining ring (400).

7. The part quantitative conveying device as described in claim 6, characterized in that, It also includes a vibrating feeder (800), the discharge port of which is located above the inlet of the belt elevator (700).

8. The part quantitative conveying device as described in claim 4, characterized in that, A horizontally arranged baffle (5011) is inserted into the discharge pipe (501), and a fourth cylinder (900) is provided on one side of the discharge pipe (501). The baffle (5011) is fixedly connected to the drive shaft of the fourth cylinder (900).

9. The part quantitative conveying device as described in claim 8, characterized in that, A third cylinder (600) is fixed on the mounting bracket (101), and a mounting rod (601) extending to the discharge pipe (501) is fixed on the drive shaft of the third cylinder (600), and a plurality of arch-breaking rods (6011) are fixed on the mounting rod (601).

10. The part quantitative conveying device as described in claim 9, characterized in that, A soft pad (3011) is fixed on the top of the guide plate (301).

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