Automatic weighing and compensating mechanism of SMC sheet cutting machine

Abstract

The utility model relates to SMC weighing technical field, specifically speaking is SMC sheet cutting machine automatic weighing difference mechanism, including cutting machine, cutting machine one side is equipped with support frame, is equipped with conveying mechanism on the support frame, support frame bottom four corners are equipped with support seat respectively, is equipped with mounting seat on the support seat, mounting seat top is equipped with the installation groove, is equipped with the weighing sensor in the installation groove, support frame bottom four corners are equipped with the connecting seat respectively, the connecting seat bottom and the inside slide coupling of installation groove, the connecting seat bottom and weighing sensor top connection, support frame bottom four corners are equipped with the protection mechanism respectively, through conveying mechanism realizes material and conveys, the connecting seat of support frame bottom will extrude the weighing sensor installed on the support seat top at this time, four weighing sensors will signal transmission to the controller at this time, and the weight change of material on conveying mechanism is analyzed, realizes automatic difference, through protection mechanism installation, is used to realize the switching protection of weighing state and non - weighing state.

Description

Technical Field

[0001] This utility model relates to an automatic weighing compensation mechanism, specifically an automatic weighing compensation mechanism for an SMC sheet cutting machine, belonging to the field of SMC weighing technology. Background Technology

[0002] SMC (Sheet Molding Compound), as a high-performance composite material, is widely used in the automotive, construction, and electrical industries. During the production process, SMC sheets typically need to be cut according to product specifications. Traditional SMC sheet cutting machines usually employ a fixed-length cutting method, which controls the cutting action by measuring or setting the conveying length of the sheet to obtain a predetermined length of sheet.

[0003] However, in actual production, due to slight fluctuations in parameters such as density and thickness of SMC sheets, or minor thickness inconsistencies arising from extrusion, calendering, and other upstream processes, sheets of the same length may have different actual weights. This method of using length as the primary control criterion may, in subsequent processes such as molding, affect the quality stability and consistency of the final product due to deviations in raw material weight, and may even lead to waste of raw materials or substandard product performance.

[0004] In existing technologies, some equipment attempts to introduce a weighing feedback mechanism to address the aforementioned problems. For example, an independent weighing conveyor is set up behind the cutting station to weigh the cut sheets. If the weight is below standard, an alarm is triggered or manual intervention is required. However, this method is a "post-processing detection" approach, which cannot compensate in real time during the cutting process. It has low automation, low efficiency, and increases the cost of manual intervention and the probability of errors.

[0005] Therefore, existing SMC sheet slitting technologies suffer from low automation, limited efficiency, high cost, and complex control issues in ensuring accurate and consistent weight for each sheet segment. There is an urgent need for a mechanism that can be tightly integrated with the cutting machine to achieve dynamic and automatic weight compensation during the cutting process, with a simple and reliable structure, and easy switching between weighing and non-weighing states to protect precision sensors. Utility Model Content

[0006] The object of the present utility model is to provide an automatic weighing and compensation mechanism for an SMC sheet cutting machine to solve the above problems. Material receiving and conveying are implemented by a conveying mechanism, at this time, connecting seats at the bottom of a support frame will extrude weighing sensors installed at the top of a support base, the four weighing sensors will transmit signals to a controller, which analyzes the weight change of materials on the conveying mechanism. When the length of the material to be cut reaches a predetermined value but the weight does not reach the set value, the conveying mechanism and the cutting machine continue to operate to export the material until the weight reaches the set value, realizing automatic compensation. The installation through a protection mechanism is used to realize switching protection between a weighing state and a non-weighing state.

[0007] The present utility model achieves the above object through the following technical solution: an automatic weighing and compensation mechanism for an SMC sheet cutting machine, comprising a cutting machine, a support frame is installed on one side of the cutting machine, a conveying mechanism is installed on the support frame, weighing mechanisms are respectively installed at four corners of the bottom of the support frame, the weighing mechanism comprises a support base, the support base is respectively installed at four corners of the bottom of the support frame, a mounting seat is installed on the support base, a mounting groove is provided at the top of the mounting seat, a weighing sensor is installed inside the mounting groove, connecting seats are respectively installed at four corners of the bottom of the support frame, the bottom of the connecting seat is slidably connected inside the mounting groove, the bottom of the connecting seat is connected to the top of the weighing sensor, and protection mechanisms are respectively installed at four corners of the bottom of the support frame.

[0008] Preferably, the support base is a cylindrical "convex"-shaped structure, and the bottom of the support base is a tapered structure.

[0009] Preferably, the connecting seat is a "T"-shaped structure, and the connecting seat is slidably connected inside the mounting groove.

[0010] Preferably, the bottom area of the connecting seat is smaller than the bottom area of the mounting groove, and the area of the weighing sensor is equal to the bottom area of the connecting seat.

[0011] Preferably, a plurality of balls are respectively rollingly connected to the outer side wall of the bottom of the connecting seat, and the balls abut against the inner wall of the mounting groove.

[0012] Preferably, the protection mechanism comprises a protection sleeve, the protection sleeve is respectively slidably connected to four corners of the bottom of the support frame, and the protection sleeve is located outside the connecting seat and the mounting seat.

[0013] Preferably, bolts are respectively vertically threadedly connected to both sides of the top of the protection sleeve, two sets of symmetric limit holes are provided on the side wall of the bottom of the support frame, and one end of the bolt extends into the limit hole.

[0014] Preferably, the bolt is a "T"-shaped structure, and an end portion of the bolt is a quincuncial structure.

[0015] Preferably, the conveying mechanism includes rollers, and rollers are rotatably connected to both ends of the support frame. A conveyor belt is connected between the two rollers, and the conveyor belt is rotatably connected to the support frame through the rollers.

[0016] Preferably, a drive assembly is installed at one end of the top of the support frame, and the drive assembly is connected to one end of one of the roller shafts via a chain.

[0017] The beneficial effects of this utility model are as follows: the four support seats facilitate the stable support of the support frame. The conveying mechanism installed on the top of the support frame allows for the reception and conveying of materials exported during cutting. When the material enters the conveying mechanism, the support frame bears a certain weight, which is evenly distributed at the four corners. At this time, the connecting seat at the bottom of the support frame presses against the weighing sensor installed on the top of the support seat. The four weighing sensors then transmit signals to the controller, which analyzes the weight change of the material on the conveying mechanism. When the weight exported by the material is equal to the set value, the controller stops the conveying mechanism and controls the cutter to perform the cutting action, thereby cutting the material. When the length to be cut reaches the predetermined value, but the weight does not reach the set value, the conveying mechanism and the cutter continue to work to export the material to reach the set weight, achieving automatic compensation. The protective mechanism is installed to achieve switching protection between the weighing state and the non-weighing state. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure between the conveyor belt and the support frame of this utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the protective sleeve and the support frame of this utility model;

[0021] Figure 4 This is a schematic diagram of the connection structure between the connector and the mounting base of this utility model;

[0022] Figure 5 This is a schematic diagram of the connection structure between the weighing sensor, the connecting base, and the mounting base of this utility model.

[0023] In the diagram: 1. Cutting machine; 2. Support frame; 3. Conveying mechanism; 301. Conveyor belt; 302. Roller; 303. Chain; 304. Drive assembly; 4. Weighing mechanism; 401. Support base; 402. Mounting base; 403. Connecting base; 404. Weighing sensor; 405. Ball bearing; 406. Mounting groove; 5. Protective mechanism; 501. Protective sleeve; 502. Bolt; 503. Limiting hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0025] Please see Figures 1-5 As shown, the automatic weighing and differential compensation mechanism of the SMC sheet cutting machine includes a cutting machine 1, a support frame 2 installed on one side of the cutting machine 1, a conveying mechanism 3 installed on the support frame 2, and weighing mechanisms 4 installed at the four bottom corners of the support frame 2. The weighing mechanism 4 includes a support base 401, a mounting base 402 installed on the support base 401, a mounting groove 406 on the top of the mounting base 402, a weighing sensor 404 installed inside the mounting groove 406, a connecting base 403 installed at the four bottom corners of the support frame 2, the bottom of the connecting base 403 slidingly connected to the inside of the mounting groove 406, the bottom of the connecting base 403 connected to the top of the weighing sensor 404, and a protective mechanism 5 installed at the four bottom corners of the support frame 2.

[0026] As a technical optimization of this utility model, the support base 401 is a cylindrical "convex" shaped structure, and the bottom of the support base 401 is a conical structure, which is conducive to the support base 401 supporting the support frame 2 stably and preventing it from tilting.

[0027] As a technical optimization of this utility model, the connecting seat 403 has a "T" shaped structure. The connecting seat 403 is slidably connected to the inside of the mounting groove 406, which is conducive to the stable installation of the connecting seat 403 inside the mounting groove 406 and will not separate from the mounting seat 402.

[0028] As a technical optimization of this utility model, the bottom area of ​​the connecting seat 403 is smaller than the bottom area of ​​the mounting groove 406, and the area of ​​the weighing sensor 404 is equal to the bottom area of ​​the connecting seat 403. This is beneficial because the connecting seat 403 will not rub against the inner wall inside the mounting groove 406, thereby reducing the error during weighing.

[0029] As a technical optimization of this utility model, multiple balls 405 are rolledly connected to the bottom outer wall of the connecting seat 403. The balls 405 abut against the inner wall of the mounting groove 406. The installation of multiple balls 405 facilitates smooth sliding between the connecting seat 403 and the mounting groove 406, and does not cause friction, making the weighing more accurate.

[0030] As a technical optimization of this utility model, the protective mechanism 5 includes a protective sleeve 501. The protective sleeve 501 is slidably connected to the four corners of the bottom of the support frame 2. The protective sleeve 501 is located outside the connecting seat 403 and the mounting seat 402. The installation of the protective sleeve 501 is beneficial to shield and protect the outside of the connecting seat 403 and the mounting seat 402.

[0031] As a technical optimization of this utility model, bolts 502 are vertically threaded to both sides of the top of the protective sleeve 501. The bottom side wall of the support frame 2 is provided with two sets of symmetrical limiting holes 503. One end of the bolt 502 extends into the limiting hole 503. By installing the two bolts 502, it is convenient to connect with two of the limiting holes 503, so as to limit the lifting of the protective sleeve 501 and prevent the protective sleeve 501 from obstructing the sliding of the connecting seat 403. When the weighing is not in use, the protective sleeve 501 is slid down to abut against the mounting seat 402 by rotating the bolt 502. Finally, the bolt 502 is inserted into the other limiting hole 503 to limit the protective sleeve 501. The protective sleeve 501 abuts against the mounting seat 402, so that the connecting seat 403 and the mounting seat 402 cannot slide, thus preventing damage to the weighing sensor 404.

[0032] As a technical optimization of this utility model, the bolt 502 has a "T" shaped structure and the end of the bolt 502 has a plum blossom-shaped structure, which helps to prevent slippage when driving and controlling the bolt 502 and makes operation convenient.

[0033] As a technical optimization of this utility model, the conveying mechanism 3 includes rollers 302, and rollers 302 are rotatably connected to both ends of the support frame 2. A conveyor belt 301 is connected between the two rollers 302. The conveyor belt 301 is rotatably connected to the support frame 2 through the rollers 302. Through the cooperation of the two rollers 302, the conveyor belt 301 and the support frame 2 can rotate, so as to realize the discharge and conveying of materials.

[0034] As a technical optimization of this utility model, a drive component 304 is installed at one end of the top of the support frame 2. The drive component 304 is connected to the end of one of the roller shafts 302 through a chain 303. The installation of the drive component 304 facilitates the driving of the roller shaft 302 through the chain 303, thereby realizing the start and stop control of the conveyor belt 301.

[0035] In use, this utility model first installs the support frame 2 on one side of the cutting machine 1, ensuring the top of the conveyor belt 301 is flush with the platform of the cutting machine 1, and one end of the conveyor belt 301 is positioned on the side of the cutting machine 1's blade. Then, rotate the bolt 502 to allow the protective sleeve 501 to slide upwards, facilitating the release of the limiting positions of the connecting seat 403 and the mounting seat 402. By controlling the operation of the cutting machine 1 and the drive assembly 304, the conveyor belt 301 rotates, facilitating the collection of the discharged material. When the material moves on the conveyor belt 301, the support frame 2 bears a certain weight, which is evenly distributed at the four corners. At this time, the connecting seat 403 at the bottom of the support frame 2 will press against the load cell 404 installed on the top of the support seat 401 (the core working principle of the load cell is to convert the mass of the measured object into a measurable electrical signal; its technical basis is the deformation of the elastic body and the resistance change of the strain gauge (the mainstream is the resistance strain gauge load cell), and a few types will...). Using the principles of piezoelectric effect and capacitance change, the four weighing sensors 404 transmit signals to the corresponding controllers and analyze the weight change of the material on the conveying mechanism 3. When the weight of the material discharged is equal to the set value, the controller will control the conveying mechanism 3 to stop working and control the cutter 1 to perform a cutting action to cut the material. When the length of the material to be cut reaches the predetermined value, but the weight does not reach the set value, the conveying mechanism 3 and the cutter 1 continue to work to discharge the material to reach the set weight and achieve automatic compensation. When the weighing is not in use, the protective sleeve 501 is slid down and contacts the mounting base 402 by rotating the bolt 502. Finally, the bolt 502 is inserted into another limiting hole 503 to limit the protective sleeve 501. The protective sleeve 501 contacts the mounting base 402, preventing the connecting base 403 from sliding and preventing damage to the weighing sensors 404.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic weighing and differential compensation mechanism for an SMC sheet cutting machine, comprising a cutting machine (1), a support frame (2) mounted on one side of the cutting machine (1), and a conveying mechanism (3) mounted on the support frame (2), characterized in that: Weighing mechanisms (4) are installed at the four corners of the bottom of the support frame (2). The weighing mechanism (4) includes a support base (401). The support base (401) is installed at the four corners of the bottom of the support frame (2). An mounting base (402) is installed on the support base (401). An mounting groove (406) is provided on the top of the mounting base (402). A weighing sensor (404) is installed inside the mounting groove (406). A connecting base (403) is installed at the four corners of the bottom of the support frame (2). The bottom of the connecting base (403) is slidably connected to the inside of the mounting groove (406). The bottom of the connecting base (403) is connected to the top of the weighing sensor (404). A protective mechanism (5) is installed at the four corners of the bottom of the support frame (2).

2. The automatic weighing and differential compensation mechanism for the SMC sheet cutting machine according to claim 1, characterized in that: The support base (401) is a cylindrical "convex" shaped structure, and the bottom of the support base (401) is a conical structure.

3. The automatic weighing and differential compensation mechanism for the SMC sheet cutting machine according to claim 1, characterized in that: The connecting seat (403) has a "T" shaped structure and is slidably connected to the mounting groove (406).

4. The automatic weighing and differential compensation mechanism for the SMC sheet cutting machine according to claim 1, characterized in that: The bottom area of ​​the connecting seat (403) is smaller than the bottom area of ​​the mounting groove (406), and the area of ​​the weighing sensor (404) is equal to the bottom area of ​​the connecting seat (403).

5. The automatic weighing and compensation mechanism for the SMC sheet cutting machine according to claim 1, characterized in that: The bottom outer wall of the connecting seat (403) is respectively connected with a plurality of balls (405), and the balls (405) abut against the inner wall of the mounting groove (406).

6. The automatic weighing and differential compensation mechanism for the SMC sheet cutting machine according to claim 1, characterized in that: The protective mechanism (5) includes a protective sleeve (501), and the four corners of the bottom of the support frame (2) are slidably connected with protective sleeves (501), and the protective sleeves (501) are located outside the connecting seat (403) and the mounting seat (402).

7. The automatic weighing and differential compensation mechanism for the SMC sheet cutting machine according to claim 6, characterized in that: The protective sleeve (501) has bolts (502) vertically threaded on both sides of its top. The support frame (2) has two sets of symmetrical limiting holes (503) on its bottom sidewall. One end of the bolt (502) extends into the limiting hole (503).

8. The automatic weighing and differential compensation mechanism for the SMC sheet cutting machine according to claim 7, characterized in that: The bolt (502) has a "T" shaped structure, and the end of the bolt (502) has a plum blossom-shaped structure.

9. The automatic weighing and differential compensation mechanism for the SMC sheet cutting machine according to claim 1, characterized in that: The conveying mechanism (3) includes rollers (302), and rollers (302) are rotatably connected to both ends of the support frame (2). A conveyor belt (301) is connected between the two rollers (302), and the conveyor belt (301) is rotatably connected to the support frame (2) through the rollers (302).

10. The automatic weighing and differential compensation mechanism for the SMC sheet cutting machine according to claim 9, characterized in that: The support frame (2) has a drive assembly (304) installed at one end of its top. The drive assembly (304) is connected to the end of one of the rollers (302) via a chain (303).

Images