Automatic pressing equipment and forming method for multiple layers of arc-shaped rubber sheets with different diameters

Abstract

The invention discloses automatic press-fit equipment and a forming method for multiple layers of arc-shaped rubber sheets with different diameters, and relates to the field of press-fit forming of multiple layers of rubber, and the press-fit equipment comprises a suction cup mechanical arm, a pressing device and a conveying device; the conveying device is installed below the downward pressing device, and the conveying device and the downward pressing device are both within the contactable range of the mechanical arm. The pressing device comprises a clamping device and a pressing rod, the two ends of the pressing rod are fixedly clamped by the clamping device, and the two ends of the pressing rod deform along with the motion trail of the clamping device. The automatic press-fit equipment is simple in required equipment and low in cost, and automatic press-fit forming of multiple layers of arc-shaped rubber sheets can be achieved only through an integral device composed of the press-fit workbench, the suction cup mechanical arm, the downward pressing device and the like; and meanwhile, batch and large-scale production of the multi-layer arc-shaped rubber sheets can be achieved only by adjusting the rotating speed of the motor during starting, manual work is replaced with a machine, the production precision is greatly improved, and the high-precision multi-layer arc-shaped rubber sheets are obtained.

Description

Technical Field

[0001] The present invention relates to the field of multi-layer rubber compression molding, and in particular to an automatic compression device and molding method for multi-layer arc-shaped rubber sheets with different diameters. Background Art

[0002] The multi-layer rubber module commonly used in modular sealing systems is a product that can easily match penetrations of different diameters and is easy to install. The number and size of rubber sheets in the multi-layer rubber module vary according to different specifications.

[0003] At present, in the production process of laminating multi-layer arc-shaped rubber sheets, especially for rubber sheet layers of different quantities and sizes, a method of manually assembling each piece and then pressing them by hand is generally adopted. However, the above-mentioned traditional manual piece-by-piece assembly method has the disadvantages of low precision and low output; at the same time, the product has high requirements on dimensional precision. Since there are too many uncertainties in manual operation, manual assembly can no longer meet its precision requirements. At present, the existing technologies are mostly for the lamination of single rubber sheets or rubber rings, and the lamination of arc-shaped rubber sheets cannot be achieved; at the same time, the lamination of arc-shaped rubber sheets is more prone to warping during the lamination operation compared with rubber sheets of other shapes. At the same time, the contact area between the pressure roller or the rotating shaft and the rubber sheet during the lamination process is small, which is not conducive to the lamination of arc-shaped rubber sheets.

[0004] Utility model patent CN 212331921 U "Rubber diaphragm rapid pressing device" discloses a rubber diaphragm rapid pressing device, which realizes the pressing of the rubber diaphragm by driving the pressing plate down through a hydraulic telescopic rod. However, the above pressing device is only suitable for the flat pressing of rubber and cannot realize the unique arc pressing of rubber sheets. It is also only suitable for the pressing of rubber sheets of a single specification and size and is not universal. Summary of the invention

[0005] In view of this, the present invention provides automatic laminating equipment and a molding method for multi-layer arc-shaped rubber sheets of different diameters. The automatic laminating equipment is used to realize automatic laminating and molding of multi-layer arc-shaped rubber sheets, aiming to solve the problems in the prior art of small laminating contact area of ​​multi-layer arc-shaped rubber sheets and poor versatility of laminating equipment.

[0006] An automatic laminating device for multi-layer arc-shaped rubber sheets of different diameters, the laminating device comprising a suction cup mechanical arm, a pressing device and a conveying device; the conveying device is installed below the pressing device, and the conveying device and the pressing device are both within the contact range of the suction cup mechanical arm;

[0007] The pressing device comprises a clamping device and a pressing rod. Both ends of the pressing rod are fixedly clamped by the clamping device, and both ends of the pressing rod are deformed along the movement track of the clamping device.

[0008] Furthermore, the suction cup robot arm includes a robot arm and a suction device, the suction device is installed on the robot arm, and the robot arm drives the suction device to automatically grasp and move the rubber sheet.

[0009] Furthermore, the pressing device also includes a connecting plate, a pressure head bracket and a motion motor. The clamping device is connected to the motion motor through the connecting plate. The connecting plate and the motion motor are both fixed on the pressure head bracket. The motion motor drives the clamping device to move, thereby realizing the telescopic movement and rotational movement of the clamping tooling.

[0010] Furthermore, the pressure rod is made of rubber material or flexible material; wherein a spring is provided inside the pressure rod.

[0011] Furthermore, the clamping device includes a rotating shaft and a clamping tool, and the clamping tool is arranged on both sides of the rotating shaft; the pressure rod is fixed on the clamping tool, and when the pressing device performs a pressing operation, the clamping tool drives the pressure rod to press downward, fixing the rubber sheet in the middle position at the bottom of the arc groove of the pressed workpiece.

[0012] Furthermore, the motion motor includes a telescopic motor and a rotary motor, the telescopic motor is connected to the first clamping fixture to realize the telescopic movement of the first clamping fixture; the rotary motor is connected to the second clamping fixture to realize the rotary movement of the second clamping fixture.

[0013] Furthermore, the conveying device includes an electric device, a conveying part and a pressing tool; the electric device is connected to the pressing tool through the conveying part, driving the conveying part and the pressing tool to move along the direction of the slide rail.

[0014] The method for automatically forming multi-layer arc-shaped rubber sheets with different diameters comprises the following steps:

[0015] S1: The conveying device drives the pressed workpiece to move along the slide rail until the pressed workpiece is moved to the bottom of the pressing device. At this time, the axis of the pressing rod and the axis of the pressed workpiece are in the same plane.

[0016] S2: The suction cup robot arm absorbs and grabs the single-layer rubber sheet to the top of the pressed workpiece;

[0017] S3: The pressure head bracket drives the pressing device to perform the pressing operation, and the clamping device clamps the pressing rod and moves downward until the pressing rod squeezes the single-layer rubber sheet to the bottom of the pressed workpiece;

[0018] S4: The motion motor drives the first clamping fixture and the second clamping fixture to perform telescopic and rotational movements, so that the pressure rod 12 undergoes an "S-shaped" deformation;

[0019] S5: The press drives the press head support to move upward, the press rod returns to the normal position, and then continues to execute step S2;

[0020] S6: After the above steps are repeated until the lamination of the multiple layers of rubber sheets is completed, the conveying device drives the pressed workpiece to move along the direction of the slide rail, and then step S1 is continued.

[0021] Furthermore, in step S1, the length of the pressing rod exceeds the pressed workpiece by 1.5 to 2 times, and the diameter of the pressing rod is smaller than the arc diameter of the smallest rubber sheet in the multi-layer rubber sheets.

[0022] Furthermore, depending on the diameter and specifications of the rubber sheets, when each layer of rubber sheets is pressed, the required horizontal and vertical displacements of the pressing rod are different, and the required "S-shaped" deformation amount of the pressing rod is also different.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1) The equipment required by the present invention is simple and low in cost. The automatic pressing and forming of multi-layer arc-shaped rubber sheets can be achieved only by an integrated device consisting of a pressing workbench, a suction cup mechanical arm, a pressing device and other components. The operation is simple and easy to implement;

[0025] 2) The present invention realizes the lamination of the arc-shaped rubber sheet by laminating the pressing rod in cooperation with the laminating workpiece, and performs an "S-shaped" rotation deformation on the pressing rod to increase the contact area between the pressing rod and the rubber sheet, changing the original bottom axis contact to the current S-surface contact, thereby increasing the contact area between the self-adhesive rubber sheet and the laminating workpiece, and realizing the lamination of multiple layers of arc-shaped rubber sheets;

[0026] 3) The present invention is suitable for pressing rubber sheets with different arc diameters, sizes and specifications by adjusting the "S-shaped" deformation of the pressing rod, and has high versatility.

[0027] 4) The present invention can realize the mass production of multi-layer arc-shaped rubber sheets on a large scale by only adjusting the motor speed at the start-up before the pressing operation, thereby freeing up labor and increasing production efficiency. At the same time, machines are suitable for replacing manual labor, greatly improving production accuracy, and obtaining high-precision multi-layer arc-shaped rubber sheets. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of a multi-layer rubber module product of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the pressing device of the present invention;

[0030] Figure 3 It is a schematic diagram of the connection structure between the pressing rod and the clamping device of the present invention;

[0031] Figure 4 It is a schematic diagram of the structure of the conveying device of the present invention.

[0032] Reference numerals:

[0033] The pressing device 1, the clamping device 11, the rotating shaft 111, the clamping tool 112, the rotating part 1121, the clamping part 1122, the first clamping tool 1123, the second clamping tool 1124; the pressing rod 12, the connecting plate 13, the pressing head bracket 14, the motion motor 15; the conveying device 2, the electric device 21, the conveying motor 211, the screw rod 212; the conveying part 22, the slide rail bottom plate 221, the slide rail 222, the conveying plate 223, the buckle 2231; the pressing tool 23, the pressing workpiece 231, the tool bottom plate 232. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The descriptions of "first", "second", etc. mentioned in the embodiments of the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] Example

[0036] At present, in the production process of laminating multi-layer arc-shaped rubber sheets, especially for rubber sheets of different quantities and sizes, the method of manually assembling each piece and then pressing them together by hand is generally adopted. However, the above traditional manual piece-by-piece assembly method has the disadvantages of low precision and low output. At the same time, the product has high requirements on dimensional precision. Since manual operation has too many uncertainties, manual assembly can no longer meet its accuracy requirements.

[0037] In view of this, the present invention provides an automatic pressing device for multi-layer arc-shaped rubber sheets of different diameters, including a suction cup robot arm, a pressing device 1 and a conveying device 2, wherein the conveying device 2 is installed below the pressing device 1, and the suction cup robot arm is flexibly installed near the conveying device 2 and the pressing device 1, so that the conveying device 2 and the pressing device 1 are both within the contact range of the suction cup robot arm.

[0038] The suction cup robot arm includes a robot arm and a suction device, which is installed on the robot arm. The robot arm drives the suction device to absorb and move the rubber sheet. The suction device includes a metal rod and an air suction pipeline, wherein the metal rod is long and has multiple small holes. The suction generated by the small holes absorbs the sheet rubber onto the metal rod; then the robot arm drives the metal rod to move above the pressed workpiece 231 in the conveying device 2 to realize automatic grasping and moving of the rubber sheet; the above-mentioned suction cup robot arm has high versatility in absorbing and moving the rubber sheet, and is suitable for rubber sheets of various sizes and specifications.

[0039] The pressing device 1 includes a clamping device 11, a pressing rod 12, a connecting plate 13, a pressing head bracket 14 and a moving motor 15. The clamping device 11 is connected to the moving motor 15 through the connecting plate 13. The connecting plate 13 and the moving motor 15 are both fixed on the pressing head bracket 14.

[0040] The pressure head bracket 14 is connected to the press, and can drive the clamping device 11 and the motion motor 15 to move longitudinally to realize the pressing operation and return. The longitudinal movement of the pressure head bracket 14 is realized through the press. The structure and assembly of the pressure head bracket and the press can adopt the existing technology, which will not be elaborated here.

[0041] The two ends of the pressing rod 12 are fixedly clamped by the clamping device 11, and the two ends of the pressing rod 12 are deformed along the movement trajectory of the clamping tool 112; preferably, the pressing rod 12 is made of rubber material or other flexible material, and a spring is built into the pressing rod 12, that is, the pressing rod 12 is composed of a spring wrapped with rubber material or other flexible material, and the spring can be adjusted according to the actual pressing situation; the length of the pressing rod 12 exceeds 1.5 to 2 times the length of the pressed workpiece 231, and the diameter is selected to be the diameter of the smallest (top layer) arc in the multi-layer rubber sheet to be pressed, and the hardness of the pressing rod 12 is set between 55 and 60; in the process of the pressing rod 12 moving along the clamping tool 112, the built-in spring plays a buffering role to achieve the limitation of the opposite movement of the two ends of the pressing rod 12.

[0042] The clamping device 11 includes a rotating shaft 111 and a clamping fixture 112, and the clamping fixture 112 is arranged on both sides of the rotating shaft 111; the rotating shaft 111 is a hollow cylindrical shape, and the upper part of the clamping fixture 112 is a rotating part 1121, and the rotating part 1121 is an annular shape, and the outer diameter of the annular ring of the rotating part 1121 is larger than the outer diameter of the rotating shaft 111; the lower part of the rotating part 1121 is a clamping part 1122, and the clamping part 1122 is an "inverted U-shape", and a groove is opened in the middle part, and bolt holes are provided at both ends of the pressing rod 12, and the bolt holes run through the entire longitudinal height of the pressing rod 12, and the pressing rod 12 is fixed to the clamping fixture 112 by bolts. When the pressing device 1 performs the pressing operation, the clamping fixture 112 drives the pressing rod 12 to press downward, and under the action of static pressure, the sheet rubber sheet is fixed at the middle position of the bottom of the circular arc groove of the pressed workpiece 231;

[0043] The motion motor 15 drives the clamping device 11 to move, and can realize the telescopic and rotational movement of the clamping tool 112. The clamping tool 112 is divided into a first clamping tool 1123 and a second clamping tool 1124. The motion motor 15 includes a telescopic motor and a rotational motor, wherein the telescopic motor is connected to the first clamping tool 1123 to realize the telescopic movement of the first clamping tool 1123; the rotational motor is connected to the second clamping tool 1123 to realize the rotational movement of the second clamping tool 1124. When the first clamping tool 1123 performs the telescopic movement, since the pressure rod 12 is made of flexible materials such as rubber, the pressure rod 12 performs the telescopic movement with the first clamping tool 1123, and then the length and diameter of the pressure rod 12 are changed accordingly, thereby adjusting the adhesion of the rubber sheet. The rubber sheet is pressed against the bottom of the pressed workpiece 231, and the contact area between the pressing rod 12 and the rubber sheet increases, changing from the original bottom axis contact to the current S-surface contact, thereby increasing the contact area between the self-adhesive rubber sheet and the pressed workpiece 231, and realizing the assembly of the rubber sheet in the pressed workpiece 231. Since the circular arc diameter, size and specification of each layer of rubber sheet in the multi-layer rubber module are different, the horizontal and vertical displacements of the pressing rod 12 required for pressing each layer of rubber sheet are different when the pressing operation is carried out. The required "S-shaped" deformation amount of the pressing rod 12 is also different.

[0044] The conveying device 2 includes an electric device 21, a conveying part 22 and a pressing tool 23; the electric device 21 is connected to the pressing tool 23 through the conveying part 22, and the electric device 21 drives the conveying part 22 and the pressing tool 23 to move along the slide rail 222, thereby realizing mass production of multi-layer arc-shaped rubber sheets;

[0045] The electric device 21 includes a transmission motor 211 and a screw rod 212. The transmission motor 211 and the screw rod 212 are connected to convert the rotational motion of the magnetic coil inside the transmission motor 211 into a linear motion in the direction of the screw rod 212.

[0046] The conveying part 22 is arranged above the electric device 21, and the conveying part 22 is moved along the direction of the slide rail 222 by the electric device 21. The conveying part 22 includes a slide rail bottom plate 221, a slide rail 222 and a conveying plate 223. The bottom of the slide rail bottom plate 221 is used to fix the electric device 21, and the top is used to fix the slide rail 222. Buckles 2231 are arranged around the lower part of the conveying plate 223. The conveying plate 223 is fixedly connected to the slide rail 222 by the buckles 2231, so as to drive the conveying plate 223 to move along the slide rail 222.

[0047] The pressing tool 23 is fixed on the conveying plate 223, and the movement of the conveying plate 223 drives the pressing tool 23 to move along the slide rail 222. At the same time, the pressing tool 23 is located at a corresponding position below the pressing rod 12 to realize the pressing operation of the rubber sheet. The pressing tool 23 includes a pressing workpiece 231 and a tool base plate 232. The pressing workpiece 231 is evenly arranged on the tool base plate 232. The tool base plate 232 is fixed on the conveying plate 223. The pressing tool 23 and the conveying part 22 perform relative static motion, that is, the conveying plate 223 drives the pressing workpiece 231 to move along the slide rail 222, thereby realizing large-scale batch production of multi-layer arc-shaped rubber sheets.

[0048] The above automatic pressing equipment is then used to automatically press and form a multi-layer arc-shaped rubber sheet:

[0049] S1: During the pressing operation, the conveying device 2 drives the pressed workpiece 231 to move along the slide rail 222 until the pressed workpiece 231 is moved to the bottom of the pressing device 1. At this time, the axis of the pressing rod 12 and the axis of the pressed workpiece 231 are in the same plane;

[0050] S2: The suction cup robot arm grabs the single-layer rubber sheet to the top of the pressed workpiece 231;

[0051] S3: The pressing head support 14 drives the pressing device 1 to perform a pressing operation, and the clamping device 11 clamps the pressing rod 12 to move downward until the pressing rod 12 squeezes the single-layer rubber sheet to the bottom of the pressed workpiece 231;

[0052] S4: The motion motor 15 drives the first clamping fixture 1123 and the second clamping fixture 1124 to move in the opposite direction, so that the pressing rod is deformed into an "S-shape" to increase the contact area between the rubber sheet and the bottom of the pressed workpiece 231;

[0053] S5: The press drives the pressure head bracket 14 to move upward, and the pressure rod 12 returns to the normal position, and then continues to execute step S2; since the arc diameter, size and specification of each layer of rubber sheets pressed in the multi-layer rubber module are different, the horizontal and vertical displacements of the pressure rod 12 required for the pressing operation of each layer of rubber sheets are different, and the required "S-shaped" deformation amount of the pressure rod 12 is also different;

[0054] S6: After the above steps are repeated until the lamination of the multiple rubber sheets is completed, the conveying device 2 drives the laminating workpiece 231 to move along the slide rail 222 , and then step S1 is continued.

[0055] A rubber pressing rod 12 is used in combination with the previous pressing parameter adjustment to realize the assembly and pressing of multiple layers of arc-shaped rubber, wherein the pressing efficiency of the automatic pressing equipment is 2s / piece, and it only takes 20s to complete a product of 10 pieces;

[0056] Manual pressing of multiple layers of rubber sheets takes an average of about 2 minutes. The use of automatic pressing equipment can greatly improve production efficiency, which is about 6 times that of manual operation. The rubber sheets are grabbed and placed by a suction cup robot arm, and its matching accuracy with the pressed workpiece 231 is much higher than manual operation. The height difference of each layer of rubber sheet of the pressed product can be controlled within 0.5mm.

[0057] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. Automatic lamination equipment for multi-layer arc-shaped rubber sheets of different diameters. It is characterized in that The pressing device comprises a suction cup mechanical arm, a pressing device (1) and a conveying device (2); the conveying device (2) is installed below the pressing device (1), and both the conveying device (2) and the pressing device (1) are within the contact range of the suction cup mechanical arm; The pressing device (1) comprises a clamping device (11) and a pressing rod (12); both ends of the pressing rod (12) are fixedly clamped by the clamping device (11); and both ends of the pressing rod (12) are deformed along the movement trajectory of the clamping device (11).

2. The lamination device according to claim 1, It is characterized in that The suction cup mechanical arm comprises a mechanical arm and a suction device, wherein the suction device is mounted on the mechanical arm, and the mechanical arm drives the suction device to automatically grasp and move the rubber sheet.

3. The lamination device according to claim 1, It is characterized in that The pressing device (1) further comprises a connecting plate (13), a pressure head bracket (14) and a motion motor (15); the clamping device (11) is connected to the motion motor (15) via the connecting plate (13); the connecting plate (13) and the motion motor (15) are both fixed on the pressure head bracket (14); the motion motor (15) drives the clamping device (11) to move, thereby realizing the telescopic movement and rotational movement of the clamping tool (112).

4. The pressing device according to claim 3, It is characterized in that The pressing rod (12) is made of rubber material or flexible material; wherein a spring is arranged inside the pressing rod (12).

5. The pressing device according to claim 3, It is characterized in that The clamping device (11) comprises a rotating shaft (111) and a clamping tool (112), wherein the clamping tool (112) is arranged on both sides of the rotating shaft (111); the pressing rod (12) is fixed on the clamping tool (112), and when the pressing device (1) performs a pressing operation, the clamping tool (112) drives the pressing rod (12) to press downward, thereby fixing the rubber sheet at the middle position at the bottom of the circular arc groove of the pressed workpiece (231).

6. The lamination device according to claim 3, It is characterized in that The motion motor (15) comprises a telescopic motor and a rotary motor; the telescopic motor is connected to the first clamping fixture (1123) to achieve the telescopic movement of the first clamping fixture (1123); the rotary motor is connected to the second clamping fixture (1124) to achieve the rotary movement of the second clamping fixture (1124).

7. The lamination device according to claim 1, It is characterized in that The conveying device (2) comprises an electric device (21), a conveying part (22) and a pressing tool (23); the electric device (21) is connected to the pressing tool (23) via the conveying part (22), and drives the conveying part (22) and the pressing tool (23) to move along the direction of the slide rail (222).

8. A method for automatically forming multi-layer arc-shaped rubber sheets of different diameters, using the laminating device according to any one of claims 1 to 7, It is characterized in that The following steps are involved: S1: The conveying device (2) drives the pressed workpiece (231) to move along the slide rail (222) until the pressed workpiece (231) is moved to the bottom of the pressing device (1). At this time, the axis of the pressing rod (12) and the axis of the pressed workpiece (231) are in the same plane; S2: The suction cup robot arm sucks and grabs the single-layer rubber sheet to the top of the pressed workpiece (231); S3: The pressing head support (14) drives the pressing device (1) to perform a pressing operation, and the clamping device (11) clamps the pressing rod (12) to move downward, until the pressing rod (12) squeezes the single-layer rubber sheet to the bottom of the pressed workpiece (231); S4: the motion motor (15) drives the first clamping fixture (1123) and the second clamping fixture (1124) to perform telescopic and rotational movements, so that the pressing rod 12 undergoes an "S-shaped" deformation; S5: The press drives the press head support (14) to move upward, and the press rod (12) returns to the normal position, and then continues to execute step S2; S6: After the lamination of the multiple layers of rubber sheets is completed by repeating the above steps, the conveying device (2) drives the laminating workpiece (231) to move along the direction of the slide rail (222), and then continues to execute step S1.

9. The molding method according to claim 8, It is characterized in that In step S1, the length of the pressing rod (12) exceeds the length of the pressed workpiece (231) by 1.5 to 2 times, and the diameter of the pressing rod (12) is smaller than the arc diameter of the smallest rubber sheet in the multi-layer rubber sheet.

10. The molding method according to claim 8, It is characterized in that According to the different diameters and specifications of the rubber sheets, when each layer of rubber sheets is pressed, the required horizontal and vertical displacements of the pressing rod (12) are different, and the required "S-shaped" deformation amount of the pressing rod (12) is also different.

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