Feeding and discharging manipulator for plastic injection mold

Abstract

The utility model relates to the technical field of manipulators for injection molds, and discloses a feeding and discharging manipulator for a plastic injection mold, which comprises a base and a manipulator mounted on the base, a mounting plate is arranged at the clamping end of the manipulator, the mounting plate is hollow, a plurality of breather pipes are arranged on the mounting plate, and the breather pipes are communicated with the base. A suction cup is arranged on each ventilation pipe in a communicating mode, a connecting pipe is further arranged on each ventilation pipe in a communicating mode, a draught fan is fixed to the base, an air inlet pipe is arranged at the air inlet end of the draught fan, an air outlet pipe is arranged at the air outlet end of the draught fan, the air inlet pipe is communicated with the connecting pipe, and a connecting assembly is arranged on each ventilation pipe. The connecting assembly is used for connecting the breather pipe and the mounting plate, and the mounting plate is provided with a fixing assembly used for fixing the position of the breather pipe. When the feeding and discharging manipulator for the plastic injection mold works, the device can adapt to products with different sizes and shapes, the universality of the device and the flexibility of a production line are improved, the equipment investment cost is reduced, the acting force of the suction cups on the products can be more uniformly dispersed, and the production efficiency is improved. Product deformation or abrasion possibly caused by concentrated acting force is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of manipulators for injection molds, in particular to a loading and unloading manipulator for plastic injection molds. Background Art

[0002] An injection mold robot, also often called an injection molding robot or an injection molding automation robot, is an automated equipment specially designed for use in injection molding production lines. Its main function is to automatically complete tasks such as product removal, placement, and rapid mold replacement, thereby improving production efficiency, reducing labor costs, and improving product consistency and quality.

[0003] After searching, a material-taking manipulator for injection molds with a publication number of CN212097378U includes a vacuum suction cup, an adjusting column is arranged at the top of the vacuum suction cup, a sleeve is arranged on the outside of the adjusting column, a limit head is arranged at the top of the adjusting column, a connecting rod is arranged at the rear end of the sleeve, a screw slide is arranged at the rear end of the connecting rod, a driving motor system is arranged at the top of the screw slide, a reciprocating rotating cylinder is arranged at the bottom end of the screw slide, and a driving cylinder is arranged at the rear end of the reciprocating rotating cylinder. By arranging a vacuum suction cup to replace the grasping mechanism of the traditional manipulator, when grasping, the suction cup with a silicone texture adsorbs the injection molded part, effectively protects the surface of the injection molded part and prevents the injection molded part from being damaged due to excessive grasping force. However, the above technical solution still has the following shortcomings when actually used:

[0004] In the prior art, a suction cup made of silicone is provided to grasp the injection molded product. If only one suction cup is designed, there will be a problem of size matching. When the size of the suction cup is small, the contact area with the product is also reduced. This not only causes the suction cup to fail to firmly fix the product, but may also damage the product due to excessive concentration of force, such as causing deformation or wear of the product. On the contrary, when the size of the suction cup is too large, a large gap may be generated between it and the product, resulting in a decrease in adsorption force, which in turn affects the stability and grasping effect of the suction cup. The design and size of the suction cup must be closely matched with the specific size of the injection molded product, which greatly limits the versatility of the suction cup. On a diversified production line, the sizes and shapes of different products and components vary greatly. This size and shape dependence requires that the production line be equipped with suction cups of various specifications, which increases costs and reduces production efficiency.

[0005] Therefore, it is necessary to design plastic injection molds with loading and unloading robots to solve the above problems. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and provides a loading and unloading manipulator for a plastic injection mold.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A loading and unloading robot for a plastic injection mold comprises a base and a robot mounted on the base, a mounting plate is provided at the clamping end of the robot, the mounting plate is hollow, a plurality of ventilation pipes are provided on the mounting plate, the ventilation pipes are connected with suction cups, the ventilation pipes are also connected with connecting pipes, a fan is fixed on the base, an air inlet pipe is provided at the air inlet end of the fan, an air outlet pipe is provided at the air outlet end of the fan, the air inlet pipe is connected with the connecting pipe, each of the ventilation pipes is provided with a connecting component, the connecting component is used to connect the ventilation pipe and the mounting plate, and a fixing component for fixing the position of the ventilation pipe is provided on the mounting plate.

[0009] As a preferred technical solution of the utility model, the connecting assembly includes a moving rod that is arranged through the mounting plate, the moving rod is slidably connected to the mounting plate, one end of the moving rod is fixed to the ventilation pipe, a fixing plate is fixedly sleeved on the moving rod, and a spring is provided between the fixing plate and the outer surface of the mounting plate.

[0010] As a preferred technical solution of the utility model, the fixing assembly includes a heating wire arranged inside the mounting plate, a cooling pipe is also arranged inside the mounting plate, and the interior of the mounting plate is filled with plastic.

[0011] As a preferred technical solution of the utility model, each of the ventilation pipes is provided with a valve.

[0012] As a preferred technical solution of the utility model, a limiting plate is fixedly connected to one end of the moving rod away from the suction cup.

[0013] As a preferred technical solution of the utility model, the moving rod is fixedly connected to a plurality of protrusions on the side wall inside the mounting plate.

[0014] The utility model has the following beneficial effects:

[0015] 1. Improved flexibility and versatility of material handling: By using movable suction cups and adjustment mechanisms, the device can adapt to products of different sizes and shapes. This design reduces the need for matching the suction cups with the product size, allowing the same set of devices to be used for handling different products, improving the versatility of the device and the flexibility of the production line;

[0016] 2. Enhanced product fixation and material handling stability: Since multiple suction cups are evenly distributed on the product, the force exerted by the suction cups on the product can be more evenly dispersed, reducing product deformation or wear that may be caused by concentrated force. This uniform force helps to protect product quality and ensure the stability and safety of the material handling process;

[0017] 3. Reduced production costs and improved production efficiency: This solution reduces the unstable adsorption phenomenon caused by size mismatch by flexibly adjusting the use of suction cups and closing unnecessary suction cups, so there is no need to configure a special material suction cup for each product. This not only reduces the equipment investment cost, but also improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a loading and unloading manipulator for a plastic injection mold proposed by the utility model;

[0019] Figure 2 for Figure 1 A magnified view of the local structure;

[0020] Figure 3 It is a schematic diagram of the structure of the mounting plate and the connecting assembly, including an enlarged view of the local structure of the fixing plate and the spring;

[0021] Figure 4 It is a schematic diagram of the structure of the moving rod and the vent pipe;

[0022] Figure 5 Schematic diagram of the structure inside the mounting plate.

[0023] In the figure: 1 base, 2 manipulator, 3 mounting plate, 4 ventilation pipe, 5 valve, 6 suction cup, 7 connecting pipe, 8 fan, 9 air inlet pipe, 10 air outlet pipe, 11 moving rod, 12 fixing plate, 13 spring, 14 cooling pipe, 15 heating wire, 16 plastic, 17 limit plate, 18 bump. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Reference Figure 1-5, a loading and unloading manipulator for a plastic injection mold includes a base 1 and a manipulator 2 installed on the base 1. The specific structure and working principle of the manipulator 2 are not the innovative part of the present technical solution, and are not shown in the figure, and will not be described in detail here. A mounting plate 3 is provided at the clamping end of the manipulator 2, and the mounting plate 3 is hollow. A plurality of ventilation pipes 4 are provided on the mounting plate 3, and a suction cup 6 is connected to the ventilation pipe 4. The suction cup 6 is made of latex to ensure the fit between the product and the ventilation pipe 4. A connecting pipe 7 is also connected to the base 1. A fan 8 is provided, an air inlet pipe 9 is provided at the air inlet end of the fan 8, an air outlet pipe 10 is provided at the air outlet end of the fan 8, and the air outlet pipe 10 is connected with the inside of the lower mold, so that the air between the suction cup 6 and the product can pass into the space between the product and the lower mold, so that the product can be quickly demoulded smoothly, ensuring the efficiency of the injection molding operation, the air inlet pipe 9 is connected with the connecting pipe 7, and each ventilation pipe 4 is provided with a connecting component, which is used to connect the ventilation pipe 4 and the mounting plate 3, and the mounting plate 3 is provided with a fixing component for fixing the position of the ventilation pipe 4.

[0026] Reference Figure 3 and Figure 4 The connecting component includes a moving rod 11 that is penetrated and arranged on the mounting plate 3. The moving rod 11 is slidably connected to the mounting plate 3. One end of the moving rod 11 is fixed to the vent pipe 4. A fixing plate 12 is fixedly sleeved on the moving rod 11. A spring 13 is provided between the fixing plate 12 and the outer surface of the mounting plate 3. Under the action of the spring 13, the suction cup 6 can always be against the surface of the product, so that the suction cup 6 can be suitable for products of different shapes.

[0027] Reference Figure 5 The fixing component includes a heating wire 15 arranged inside the mounting plate 3, and a cooling pipe 14 is also arranged inside the mounting plate 3. The interior of the mounting plate 3 is filled with plastic 16. The heating wire 15 can heat the plastic 16 into a flowing state, so that the position of the moving rod 11 and the suction cup 6 can change according to the shape of the product. Cooling water for injection molding is passed into the cooling pipe 14, so that the plastic 16 can be cooled and formed, so that the position of the suction cup 6 is fixed, so that the device can be applied to products of different shapes, improves the practicality of the device, and reduces the production cost. In addition, the cooling pipe 14 is composed of multiple sections of U-shaped pipes, and the heating wire 15 is also composed of multiple sections of U-shaped nickel-chromium alloy, which can increase the contact area between the cooling pipe 14 and the plastic 16 and between the heating wire 15 and the plastic 16, and improve the efficiency of the shape change of the plastic 16. The plastic 16 and the cooling pipe 14 are both common materials in the injection molding process, and the use of these materials can save production costs.

[0028] Reference Figure 2 , Figure 3 and Figure 4Each vent pipe 4 is provided with a valve 5. When the size of the product is small, some suction cups 6 cannot contact the product. At this time, closing the valves 5 of these suction cups 6 can ensure that the other suction cups 6 can firmly adsorb the product.

[0029] Reference Figure 3 and Figure 4 A limit plate 17 is fixedly connected to one end of the moving rod 11 away from the suction cup 6. The limit plate 17 can prevent the moving rod 11 from being separated from the mounting plate 3, thereby ensuring the integrity of the device.

[0030] Reference Figure 4 The moving rod 11 is located on the side wall inside the mounting plate 3 and is fixedly connected with a plurality of protrusions 18. The protrusions 18 can increase the friction between the moving rod 11 and the plastic 16. In this way, when the plastic 16 cools and hardens, the moving rod 11 will not move when subjected to force, thereby ensuring the stability of the device structure.

[0031] The specific working principle of the utility model is as follows:

[0032] When unloading, the staff controls the manipulator 2 to make the suction cup 6 contact with the product. Under the action of the spring 13, the moving rod 11, the vent pipe 4 and the suction cup 6 will move together according to the shape of the product, so that all the suction cups 6 can contact with different positions of the product. Then, the cooling water for injection molding is passed into the cooling pipe 14, so that the molten plastic 16 in the mounting plate 3 is cooled and formed. In this way, the cooled plastic 16 hardens and can fix the position of the moving rod 11, so that the contact position of the suction cup 6 and the product is fixed. Then, the fan 8 is started, and the fan 8 sucks out the air between the suction cup 6 and the product, so that the suction cup 6 can adsorb the product. Then, the manipulator 2 is controlled to move the product to achieve the purpose of taking materials. In this way, under the action of multiple suction cups 6, the force of the suction cup 6 on the product can be dispersed. On the one hand, the product can be subjected to uniform force to ensure the firmness of the fixation. On the other hand, it prevents the concentrated force from causing deformation and wear of the product, thereby ensuring the injection molding production quality of the product.

[0033] In addition, when products of different sizes are adsorbed and fixed, part of the suction cup 6 can always be in contact with the product. When the product size is small, it is only necessary to close the valve 5 of the suction cup 6 that is not in contact. In this way, there is no need to consider the matching problem between the suction cup 6 and the product size, thereby ensuring the versatility of the device. When products of different shapes are taken, the heating wire 15 is energized so that the heating wire 15 can melt the solid plastic 16. At this time, the moving rod 11 is brought into contact with the product. The suction cup 6 will be displaced under the action of the spring 13 and will always be against the product. In this way, the device can be applied to products of different shapes, thereby improving the practicability and flexibility of the device and reducing the production cost.

[0034] It is worth mentioning that under the action of the fan 8, the air between the suction cup 6 and the product is sucked into the air outlet pipe 10. Since the air outlet pipe 10 is connected to the inside of the lower mold, the air will enter between the product and the lower mold, so that the product and the lower mold can be separated quickly, preventing the material from being stuck, thereby improving the material taking efficiency.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A loading and unloading robot for a plastic injection mold, comprising a base (1) and a robot (2) mounted on the base (1), characterized in that: The clamping end of the manipulator (2) is provided with a mounting plate (3), the mounting plate (3) is hollow, a plurality of ventilation pipes (4) are provided on the mounting plate (3), a suction cup (6) is connected to the ventilation pipe (4), and a connecting pipe (7) is also connected to the ventilation pipe (4). A fan (8) is fixed on the base (1), an air inlet pipe (9) is provided at the air inlet end of the fan (8), an air outlet pipe (10) is provided at the air outlet end of the fan (8), the air inlet pipe (9) is connected to the connecting pipe (7), each of the ventilation pipes (4) is provided with a connecting component, the connecting component is used to connect the ventilation pipe (4) and the mounting plate (3), and a fixing component for fixing the position of the ventilation pipe (4) is provided on the mounting plate (3).

2. The loading and unloading robot for plastic injection mold according to claim 1 is characterized in that: The connecting assembly comprises a moving rod (11) penetrating the mounting plate (3), the moving rod (11) being slidably connected to the mounting plate (3), one end of the moving rod (11) being fixed to the ventilation pipe (4), a fixing plate (12) being fixedly sleeved on the moving rod (11), and a spring (13) being provided between the fixing plate (12) and the outer surface of the mounting plate (3).

3. The loading and unloading robot for plastic injection mold according to claim 1 is characterized in that: The fixing assembly comprises a heating wire (15) arranged inside the mounting plate (3), a cooling pipe (14) is also arranged inside the mounting plate (3), and the interior of the mounting plate (3) is filled with plastic (16).

4. The loading and unloading robot for plastic injection mold according to claim 1, characterized in that: Each of the ventilation pipes (4) is provided with a valve (5).

5. The loading and unloading robot for plastic injection mold according to claim 2, characterized in that: The end of the moving rod (11) away from the suction cup (6) is fixedly connected to a limiting plate (17).

6. The loading and unloading robot for plastic injection mold according to claim 2, characterized in that: The moving rod (11) is fixedly connected to a plurality of protrusions (18) on a side wall located inside the mounting plate (3).

Images