Forming-weighing all-in-one machine for rubber

Abstract

The utility model relates to the technical field of rubber extrusion and weighing, in particular to a forming-weighing all-in-one machine for rubber, which comprises an extrusion forming part I, a cutting part II and a weight adjusting part III, the extrusion forming part I is provided with an extrusion inner cavity in the left-right direction; a feed port is formed in the side surface of the right end of the extrusion inner cavity, and a discharge port is formed in the left end of the extrusion inner cavity; a piston plate is also adaptively arranged in the extrusion inner cavity; the cutting part II is arranged at a discharge hole in the left end of the extrusion forming part I; the weight adjusting part III is arranged on the left side of the cutting part II; the weight adjusting part III comprises a long conveying mechanism and a length measurer, and the length measurer is arranged on the outer side of the right end of the long conveying mechanism; a weighing machine is arranged at the left end of the length conveying mechanism; and the length measurer, the weighing machine and the cutting part II are electrically connected with the control panel. The rubber block cutting device has the advantages that the total weight of all cut rubber blocks can be accurately controlled, follow-up weight selection is facilitated, and stripping is not prone to occurring during transportation; the automation degree and the production efficiency are high.

Description

Technical Field

[0001] This utility model relates to the field of natural rubber extrusion molding-weighing technology, and in particular to an integrated molding-weighing machine for rubber. Background Technology

[0002] After natural rubber is collected, it needs to be broken up and then mixed with some auxiliary materials. After mixing, the rubber material needs to be extruded into blocks before transportation (on the one hand, to facilitate transportation, and on the other hand, to avoid the broken rubber material from coming into contact with air and undergoing certain quality changes).

[0003] In the current natural rubber industry (with a small number of Chinese companies, but mostly concentrated in Southeast Asia), the equipment used is increasingly inadequate for large-scale production. In current natural rubber extrusion and weighing methods, the extrusion and weighing mechanisms are separate. Rubber material easily sticks to the inner wall of the extrusion mechanism during extrusion, making it difficult to clean. Furthermore, the extrusion and weighing process is very simple: during extrusion, some rubber material is poured out and then extruded into a single rubber block; this extruded block is weighed; then the next block is extruded and weighed; this process is repeated for multiple blocks, and the total weight of all blocks is calculated and compared with the customer's required weight. If the weight does not meet the standard, a portion of the rubber material is manually cut to make up the difference.

[0004] The problems are as follows: 1. When the total weight of the rubber is insufficient, the supplementary rubber material is manually adhered to the rubber blocks. During repeated handling, this adhered rubber material is very easy to fall off (the rubber material is similar to dough), resulting in the final weight of the rubber material received by the customer being insufficient. 2. During the extrusion molding process, the weight difference between individual rubber blocks is large. When a customer needs a certain total weight of rubber blocks, multiple rubber blocks need to be selected from the warehouse, making it difficult to select multiple rubber blocks of suitable weight to perfectly match the customer's required rubber blocks. 3. Both the extrusion and weighing processes require a large amount of manual intervention, resulting in low automation and difficulty in meeting the needs of mass production. When customers have a need, the material selection and warehousing process also requires a large number of personnel, which may also lead to the customer receiving insufficient rubber material. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an integrated molding and weighing machine for rubber, which solves the calculation problem of rubber material easily falling off during transportation, as well as the technical problem of low automation in extrusion and weighing, and the problem of difficulty in selecting rubber blocks when a certain total weight of rubber material is required.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A molding-weighing integrated machine for rubber is disclosed, comprising an extrusion molding section I, a cutting section II, and a weight adjustment section III;

[0008] The extrusion molding section I has an extrusion cavity in the left-right direction; a feed port is provided at the front and rear walls at the right end of the extrusion cavity, and a discharge port is provided at the left end of the extrusion cavity; a piston plate is also adaptedly provided inside the extrusion cavity.

[0009] The cutting section II is located at the discharge port at the left end of the extrusion molding section I;

[0010] The weight adjustment unit III is located on the left side of the cutting unit II; the weight adjustment unit III includes a long conveying mechanism and a length measuring device, with the length measuring device located on the outer side of the right end of the long conveying mechanism; a weighing machine is located on the left end of the long conveying mechanism; the length measuring device, the weighing machine, and the cutting unit II are all electrically connected to the control panel.

[0011] Rubber material is fed into the extrusion chamber through the feed port and squeezed under the action of the piston plate, and then extruded from the discharge port. The extruded rubber moves to the left under the drive of the long conveyor mechanism, and the length measuring device can measure the length of the extruded rubber. The cutting part II can cut the extruded rubber to form a rectangular rubber block. After the rectangular rubber block is weighed, if it is overweight / underweight, the length measuring device will measure the length of the next cut to make more material cut / supplement the next cut, so that the sum of the weights of multiple rubber blocks is the set value.

[0012] As a preferred technical solution of this application, the extrusion molding section I includes a first compartment, a second compartment, and a third compartment connected sequentially from right to left. The first compartment is rectangular in shape, with a feed port on the front and rear walls at its right end, and a pushing cylinder is provided at its right end; the pushing cylinder is connected to a piston plate. The second compartment is rectangular in shape, and multiple nozzles are provided on its walls; the nozzles can spray anti-sticking oil. After the rubber material is placed in the first compartment, it can be pushed into the second compartment under the action of the piston plate, and the rubber material can be sprayed with anti-sticking oil in the second compartment. When the rubber material is pushed from the right end to the left end by the piston plate in the second compartment, it will press against the blade of the cutting section II to complete the extrusion and form a material with a rectangular cross-section.

[0013] As a preferred technical solution of this application, the extrusion molding section I further includes a third compartment; the right end of the third compartment is a large rectangular opening and the left end is a small rectangular opening, the small rectangular opening at the left end is the discharge port; the third compartment is provided at the left end of the second compartment; when the rubber moves from right to left in the third compartment, it is squeezed on the cross section.

[0014] Furthermore, each compartment has flanges at both ends, which are connected by bolts to form a detachable structure.

[0015] As a preferred technical solution of this application, in the weight adjustment part III: the long conveying mechanism includes multiple rollers spaced apart, and a conveyor belt is provided on the rollers.

[0016] As a preferred technical solution of this application, in the weight adjustment unit III: the length measuring device includes an elongated plate, on which a lead screw driven by a servo motor is disposed, and a laser sensor is adapted to be installed on the lead screw; the laser sensor and the elongated plate are also slidably engaged through a sliding groove. The servo motor controls the position of the laser sensor on the elongated plate by controlling the number of rotations of the lead screw, thereby controlling the length position between the laser sensor and the cutting unit II.

[0017] As a preferred technical solution of this application, in the weight adjustment part III: the weighing machine includes a material frame, and an electronic weighing scale is provided below the material frame.

[0018] As a preferred technical solution of this application, the cutting part II includes a gantry frame; vertical grooves are opened on the left and right walls of the gantry frame, and blades that can move up and down are installed in the vertical grooves; a cutting cylinder is installed on the crossbeam of the gantry frame.

[0019] Furthermore, the bottom of the blade is provided with a detachable carbide cutting edge.

[0020] This utility model has the following advantages:

[0021] (1) High degree of automation, which improves work efficiency and is suitable for mass production;

[0022] In this solution, the feeding of rubber material into the extrusion cavity can be automated through some feeding equipment, and extrusion, length measurement, cutting, and weighing can all be automated, thus improving production efficiency.

[0023] (2) It can control the total weight of all the cut rubber blocks more accurately, which is convenient for subsequent weight selection and less likely to cause material loss during transportation;

[0024] In this scheme, when a piece of rubber is cut off, it is compared with the standard weight. If the rubber piece does not meet the standard weight, the weight is supplemented (increased / decreased) when cutting the next piece of rubber.

[0025] This method allows customers to quickly find rubber blocks that can be assembled to form a certain total weight of rubber material when they need it (for example, assuming the standard weight of each rubber block is 0.5 tons, the first rubber block weighs 0.4 tons, the second rubber block weighs 0.6 tons - the extra 0.1 tons is to make up the weight of the first rubber block, the third rubber block weighs 0.55 tons, and the fourth rubber block weighs 0.45 tons - also to make up the weight of the third rubber block; when the customer needs 2 tons of rubber material, these 4 blocks can be selected; similarly, for 10 tons, 100 tons, etc., by using this method of making up the weight of adjacent rubber blocks, the corresponding rubber blocks can be quickly found in the factory warehouse for assembly).

[0026] In addition, since the next rubber block is used to make up for the previous rubber block, when the customer needs a certain total weight of rubber material, it is always easier and faster to find suitable rubber blocks to combine. There is no need to manually cut off an extra part of the material to stick to the rubber block, and there is no need to worry about the subsequent adhesive rubber material falling off. This allows the customer to receive materials with the correct weight.

[0027] (3) The nozzles installed in the second compartment allow the anti-sticking oil sprayed from the nozzles to be located on the surface of the rubber material, which can prevent the material from adhering to the inner wall of the compartment during the extrusion of the third compartment. In addition, the extrusion cavity formed can be penetrated from left to right. In particular, the front and rear walls of the right end of the extrusion cavity are provided with feed ports, so that if a small amount of material adheres to the inner wall, it can be cleaned in time. Furthermore, the compartments are detachable, so that when a lot of material is indeed adhered, it is easy to disassemble and clean it in time. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the structure between the extrusion molding section I and the cutting section II;

[0030] Figure 3 This is a schematic diagram of the structure between extrusion molding section I and cutting section II after the blade is removed.

[0031] Figure 4 This is a schematic diagram of the gantry frame structure;

[0032] Figure 5 This is a structural diagram of the gantry frame from another angle;

[0033] Figure 6 This is a schematic diagram of the long conveyor mechanism;

[0034] Figure 7 This is a schematic diagram of the length measuring device;

[0035] In the diagram: 101 - feed inlet, 102 - discharge outlet, 103 - piston plate, 104 - hydraulic cylinder;

[0036] 20-First compartment section, 30-Second compartment section, 50-Long conveyor mechanism, 60-Length measuring device, 61-Long strip plate, 62-Servo motor, 63-Lead screw, 64-Laser sensor, 80-Gantry frame, 801-Knife plate. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0038] It should be noted that the orientation or positional relationship indicated by terms such as "left" and "right" is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this utility model is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. Such terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0040] like Figures 1-4 As shown in the figure, this specific embodiment discloses a molding-weighing integrated machine for rubber, including an extrusion molding section I, a cutting section II, and a weight adjustment section III;

[0041] Among them, the extrusion molding part I has an extrusion cavity in the left and right direction. A feed port 101 is provided on the front and rear walls at the right end of the extrusion cavity 0, and a discharge port 102 is provided at the left end of the extrusion cavity. A piston plate 103 is also adaptedly provided in the extrusion cavity.

[0042] The cutting section II is located at the discharge port 102 at the left end of the extrusion molding section I;

[0043] The weight adjustment unit Ⅲ is located on the left side of the cutting unit Ⅱ; the weight adjustment unit Ⅲ includes a long conveying mechanism 50 and a length measuring device 60, with the length measuring device 60 located on the outer side of the right end of the long conveying mechanism 50; a weighing machine is located on the left end of the long conveying mechanism 50; the length measuring device 60, the weighing machine, and the cutting unit Ⅱ are all electrically connected to the control panel.

[0044] Rubber material is fed into the extrusion cavity through the feed port 101 and squeezed under the action of the piston plate 103, and then extruded from the discharge port 102. The extruded rubber moves to the left under the drive of the long conveyor mechanism 50, and the length measuring device 60 can measure the length of the extruded rubber. The cutting part II can cut the extruded rubber to form a rectangular rubber block. After the rectangular rubber block is weighed, if it is overweight / underweight, the length measuring device 60 will measure the length of the next cut to make more material cut / supplement the next cut, so that the sum of the weights of multiple rubber blocks is the set value.

[0045] The following is a further explanation of extrusion molding section I.

[0046] See Figure 2 The extrusion molding section I includes a first compartment 20 and a second compartment 30 connected sequentially from right to left. Both the first compartment 20 and the second compartment 30 extend through each other from left to right, and each compartment has flanges at both ends. Adjacent flanges are connected by bolts to form a detachable structure. A cutting section II is fixed to the flange at the left end of the second compartment 30. Both the first compartment 20 and the second compartment 30 are supported by brackets.

[0047] Optionally, the support frame can be provided with auxiliary sliding grooves in the left and right directions. The lower part of each compartment is adapted to the auxiliary sliding groove and connected by locking screws. When it is necessary to open each compartment, the bolts are removed and the locking screws are unloaded, so that the auxiliary sliding grooves can be slid in the left and right directions, thereby facilitating the cleaning of materials on the inner wall of each compartment.

[0048] The first compartment 20 is rectangular, with a feed inlet 101 on its side, and a feed bin welded to the feed inlet 101. A push cylinder 104 is provided at the right end of the first compartment 20, and a piston plate 103 is fixed at the end of the push cylinder 104. The piston plate 103 extends into the first compartment 20.

[0049] The second compartment 30 is also rectangular, with a cross-sectional size matching that of the first compartment 20. Multiple nozzles are installed on the upper, lower, front, and rear walls of the second compartment 30. These nozzles are connected via pipes to a tank containing anti-sticking oil, and a pump is installed on these pipes. When the pump operates, the anti-sticking oil is sprayed from the nozzles and applied to the surface of the rubber material.

[0050] During operation: Rubber material is placed into the first compartment 20 through the feed port 101, and then pushed into the second compartment 30 by the piston plate 103. Then, the nozzle sprays out anti-sticking oil. The piston plate 103 continues to move, so that the left end of the rubber material abuts against the blade of the cutting part II (at this time, the blade is in a downward state, which can close the discharge port 102). As the piston plate 103 continues to move, the rubber material is gradually squeezed. When the blade of the cutting part II is lifted (the blade rises, allowing the discharge port 102 to open), if the rubber material is squeezed by the piston plate 103, the rubber material will eventually be squeezed out from the discharge port 102, just like squeezing toothpaste, except that the cross-section of the squeezed rubber material is rectangular.

[0051] Of course, another design can be adopted for extrusion molding section I, by adding a third compartment based on the above-mentioned extrusion molding section I. The right end of the third compartment is a large rectangular opening, and the right end is the same size as the left end of the second compartment 30; the left end of the third compartment is a small rectangular opening, which is the discharge port 102. In the third compartment, the structure of the larger right side and the smaller left side can better complete the extrusion.

[0052] The cutting section II will be further explained below.

[0053] See Figure 3 The cutting section II includes a gantry frame 80, on which a cutting cylinder is fixed. A blade plate 801 is positioned below the gantry frame and connected to the output end of the cutting cylinder. Vertical slots are formed between the opposing walls of the side frames of the gantry frame 80, and the side edges of the blade plate 801 are fitted into these slots. A detachable carbide cutting edge is provided at the lower edge of the blade plate 801.

[0054] During operation, the cutting cylinder drives the blade 801 to move up and down, cutting the rubber material extruded from the outlet 101 into segments, thus turning the cut rubber material into rubber blocks. Because the blade is very prone to wear during rubber cutting, when wear occurs, the carbide blade should be disassembled and replaced with a new one.

[0055] The following is a further explanation of the weight adjustment section III.

[0056] See Figure 4 For the long conveying mechanism 50 in the weight adjustment section III, multiple rollers are arranged at intervals on the long frame, and a conveyor belt is arranged on the rollers.

[0057] Furthermore, the length measuring device 60 in the weight adjustment section III includes a long strip plate 61. A lead screw 63, driven by a servo motor 62, is mounted on the long strip plate (61). A laser sensor 64 is threadedly mounted on the lead screw 63. The bottom of the laser sensor 64 slides through grooves on the upper surface of the long strip plate 61. During operation, the servo motor 62 controls the position of the laser sensor 64 on the long strip plate 61 by controlling the number of rotations of the lead screw 63, thereby controlling the length position between the laser sensor 64 and the cutting section II.

[0058] Furthermore, the weighing machine in the weight adjustment unit III includes a material frame, and an electronic weighing scale is installed below the material frame.

[0059] Furthermore, the electronic weighing scale in the weighing machine, the cutting cylinder in the cutting section II, the servo motor in the length measuring device 60, and the laser sensor in the length measuring device 60 are all connected to the PLC control panel.

[0060] A molding-weighing integrated machine for rubber includes the following steps during molding and weighing operations:

[0061] S1. When the rubber material is squeezed out of the discharge port 102 like toothpaste, the cross-section of the squeezed rubber material is rectangular, and the size of the rectangle is consistent with the size of the discharge port 102.

[0062] S2. The extruded rubber gradually shifts to the left under the drive of the long conveyor mechanism 50, so that the displacement speed of the long conveyor mechanism 50 is consistent with the speed at which the rubber material is extruded.

[0063] S3. The servo motor drives the lead screw to rotate, thereby driving the laser sensor to move. The distance between the laser sensor and the cutting part II in the left and right directions is initially adjusted. This length is set manually. When the laser sensor senses the left end of the extruded rubber, the cutting cylinder in the cutting part II drives the blade plate 801 to move, cutting the extruded rubber material. The cut rubber material becomes a long rectangular rubber block.

[0064] S4. Then, the extrusion molding section I stops extruding the rubber material, and the long conveyor mechanism 50 moves the rubber block to the left. The rubber block falls into the material frame in the weighing machine, and then the weight of the rubber block is weighed by the electronic weighing scale.

[0065] S5. The electronic weighing scale transmits the weighed weight to the PLC control panel. The weight of each rubber block is preset with a certain calibration value in the PLC. After the PLC control panel obtains the actual weight of the cut rubber block, it compares it with the calibration value and calculates the weight difference. In addition, the PLC control panel can also calculate the density of the rubber block based on the actual weight, the size of the discharge port 102, and the length of the rubber block.

[0066] S6. Based on the weight difference, density, and size of the discharge port 102, the length of the next rubber block to be cut is calculated to make up for the difference. If the actual weight is greater than the calibrated value, the next cutting length is shortened. If the actual weight is less than the calibrated value, the next cutting length is increased. Then, the PLC controls the servo motor in the length measuring device 60 to adjust the position of the laser sensor.

[0067] S7. Then the extrusion molding section I continues to extrude, and when the rubber material is extruded to the corresponding length, it is cut again to form a second rubber block.

[0068] S8. This process is repeated to form the third, fourth, and subsequent rubber blocks. Since the weights of adjacent rubber blocks are related, any deviation in the weight of a rubber block can be adjusted by the weight of the next rubber block.

[0069] S9. After cutting multiple rubber blocks in this way, the PLC will accumulate the weight of these rubber blocks and compare it with the final required total weight of rubber. If there is an error, the weight will be adjusted for the last rubber block.

[0070] The above embodiments only illustrate preferred implementation methods, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A molding-weighing integrated machine for rubber, characterized in that: Includes extrusion molding section I, cutting section II, and weight adjustment section III; The extrusion molding section I has an extrusion cavity in the left-right direction; a feed port (101) is provided at the front and rear walls of the right end of the extrusion cavity, and a discharge port (102) is provided at the left end of the extrusion cavity; a piston plate (103) is also adaptedly provided in the extrusion cavity. The cutting section II is located at the discharge port (102) at the left end of the extrusion molding section I; The weight adjustment unit III is located on the left side of the cutting unit II; the weight adjustment unit III includes a long conveying mechanism (50) and a length measuring device (60), and the length measuring device (60) is located on the outer side of the right end of the long conveying mechanism (50); a weighing machine is located on the left end of the long conveying mechanism (50); the length measuring device (60), the weighing machine, and the cutting unit II are all electrically connected to the control panel; Rubber material is fed into the extrusion cavity through the feed port (101) and squeezed under the action of the piston plate (103), and then extruded from the discharge port (102). The extruded rubber moves to the left under the drive of the long conveying mechanism (50), and the length measuring device (60) can measure the length of the extruded rubber. The cutting part II can cut the extruded rubber to form a rectangular rubber block. When the rectangular rubber block is weighed, if it is overweight / underweight, the length measuring device (60) will measure the length of the next cut to make more material cut / supplement the next cut, so that the sum of the weights of multiple rubber blocks is the set value.

2. The molding-weighing integrated machine for rubber according to claim 1, characterized in that: The extrusion molding section I includes a first compartment (20) and a second compartment (30) connected sequentially from right to left. The first compartment (20) is rectangular in shape, with a feed inlet (101) on the front and rear walls at the right end, and a push cylinder (104) is provided at the right end; the push cylinder (104) is connected to the piston plate (103); The second compartment (30) is rectangular in shape, and multiple nozzles are provided on its walls; the nozzles can spray anti-sticking oil; After the rubber material is placed in the first compartment (20), it can be pushed into the second compartment (30) under the action of the piston plate (103). The rubber material can be sprayed with anti-sticking oil in the second compartment (30). When the rubber material is pushed from the right end to the left end in the second compartment (30) by the piston plate (103), it will press against the blade (801) of the cutting part II to complete the extrusion and form a material with a rectangular cross section.

3. The molding-weighing integrated machine for rubber according to claim 2, characterized in that: The extrusion molding section I further includes a third compartment; The right end of the third compartment is a large rectangular opening and the left end is a small rectangular opening. The small rectangular opening on the left end is the discharge port (102). The left end of the second compartment (30) is provided with the third compartment. When the rubber moves from right to left in the third compartment, it is squeezed on the cross section.

4. A molding-weighing integrated machine for rubber according to claim 2 or 3, characterized in that: Each compartment has flanges at both ends, and the flanges are connected by bolts to form a detachable structure.

5. The molding-weighing integrated machine for rubber according to claim 1, characterized in that: In the weight adjustment section III, the long conveying mechanism (50) includes multiple rollers spaced apart, and a conveyor belt is provided on the rollers.

6. A molding-weighing integrated machine for rubber according to claim 2 or 3, characterized in that: In the weight adjustment unit III: the length measuring device (60) includes a long strip plate (61), on which a lead screw (63) driven by a servo motor (62) is provided, and a laser sensor (64) is adapted to be installed on the lead screw (63); the laser sensor (64) and the long strip plate (61) are also slidably engaged through a groove; The servo motor (62) controls the position of the laser sensor (64) on the long strip plate (61) by controlling the number of rotations of the lead screw (63), thereby controlling the length position between the laser sensor (64) and the cutting part II.

7. The molding-weighing integrated machine for rubber according to claim 6, characterized in that: In the aforementioned weight adjustment unit III: the weighing machine includes a material frame, and an electronic weighing scale is installed below the material frame.

8. The molding-weighing integrated machine for rubber according to claim 1, characterized in that: The cutting section II includes a gantry frame (80); the left and right walls of the gantry frame (80) have vertical slots, and the vertical slots are equipped with blades (801) that can move up and down; a cutting cylinder is installed on the crossbeam of the gantry frame (80).

9. A molding-weighing integrated machine for rubber according to claim 7, characterized in that: The bottom of the blade (801) is provided with a detachable carbide cutting edge.

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