Plastic product manufacturing device with automatic demolding function

Abstract

The utility model discloses a plastic product manufacturing device with an automatic demolding function, and relates to the technical field of mold demolding, the plastic product manufacturing device comprises a mold assembly and a material taking assembly, the material taking assembly comprises an adsorption unit, a linkage unit and a positioning unit; the adsorption unit is used for adsorbing and grabbing the demolded plastic finished product; the linkage unit is used for realizing rotation operation of the adsorption unit; the positioning unit provides positioning force for the initial position of the adsorption unit. By arranging the material taking assembly, a demolded plastic finished product can be driven to rotate to the outer side area of the mold assembly by utilizing the moving force of the movable mold, so that a worker can conveniently take away the plastic finished product in a contact manner, secondary injection molding cannot be interfered in the process, the high-efficiency production efficiency of injection molding production is ensured, and the labor intensity of the worker is reduced. And the driving force of the L-shaped material taking arm comes from the movable mold, additional driving force is not needed, and a material taking assembly can be conveniently and additionally arranged on an existing mold structure to achieve automatic material taking operation.

Description

A plastic product manufacturing apparatus with automatic demolding function Technical Field

[0001] This utility model relates to the field of mold demolding technology, specifically a plastic product manufacturing device with automatic demolding function. Background Technology

[0002] Plastic molds are tools used in the plastics processing industry in conjunction with plastic molding machines to give plastic products a complete shape and precise dimensions.

[0003] Injection molds are an indispensable core tool in the plastic injection molding process. When producing plastic products through injection molds, after the product solidifies, the mold's ejection system (ejector pins, push plates, etc.) can smoothly push the product out of the cavity, achieving automatic demolding. However, when producing some transparent plastic products (such as transparent plastic boxes), the product may fall directly after demolding, causing impact scratches on the appearance of the plastic product and increasing the defect rate. Therefore, manual material handling or robotic arm material handling is used. Manual material handling affects the working efficiency of the injection mold, while robotic arm material handling requires more drive units and has higher equipment costs. Based on this, a plastic product manufacturing device with automatic demolding function is provided. Summary of the Invention

[0004] The purpose of this utility model is to provide a plastic product manufacturing device with an automatic demolding function in order to solve the problems mentioned above.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a plastic product manufacturing device with automatic demolding function, comprising a mold assembly consisting of a fixed base, fixed guide rods, a fixed mold, a first pneumatic push rod, a moving mold, and a demolding unit. Four fixed guide rods are arranged in a matrix and fixed between two fixed bases. The fixed mold is fixed to one end of one fixed base. The first pneumatic push rod is located at the other end of the other fixed base, and its output end extends through the fixed base and is fixedly connected to the moving mold. The moving mold is distributed between the two fixed bases and slidably sleeved with the four fixed guide rods. The first pneumatic push rod drives the moving mold to move closer to the fixed mold for mold closing, providing a cavity structure for molding plastic products. The demolding unit is installed at both ends of the moving mold for demolding the molded plastic product. A material-grabbing component is provided on the outside of the fixed base and the moving mold, used for adsorbing and transferring the demolded plastic product.

[0006] The material handling assembly includes an adsorption unit, a linkage unit, and a positioning unit;

[0007] When the moving mold separates from the fixed mold, it rotates to the front end of the moving mold via the adsorption unit to adsorb and grasp the demolded plastic product.

[0008] The linkage unit is used to transmit the horizontal moving force of the moving mold to the adsorption unit, so as to realize the rotation operation of the adsorption unit.

[0009] The positioning unit provides a positioning force for the initial position of the adsorption unit.

[0010] As a further embodiment of this utility model: the adsorption unit includes a support arm, a rotating shaft, an L-shaped material picking arm, a third pneumatic push rod, and a pneumatic suction cup;

[0011] Two support arms are provided, and the two support arms are fixed vertically to the outside of the fixed seat near the first pneumatic push rod;

[0012] The rotating shaft is rotatably connected between the two support arms. The L-shaped material picking arm is fixed to the middle of the outer side of the rotating shaft. The third pneumatic push rod is installed at one end of the longitudinal plate of the L-shaped material picking arm. The output end of the third pneumatic push rod passes through to the other end of the longitudinal plate and is fixedly connected to the pneumatic suction cup.

[0013] When the moving mold separates from the fixed mold, the L-shaped material-grabbing arm rotates around the pivot shaft to position the third pneumatic push rod and the pneumatic suction cup at the front end of the moving mold. The third pneumatic push rod drives the pneumatic suction cup to approach the demolded plastic product, thereby achieving adsorption and gripping of the plastic product.

[0014] As a further improvement of this utility model: the linkage unit includes a linkage gear and a gear arm;

[0015] The linkage gear is fixed to the outside of the rotating shaft and distributed below the L-shaped material handling arm;

[0016] The toothed arm is fixed to the bottom of the moving mold and meshes with the side of the linkage gear. When the moving mold moves horizontally, the toothed arm pushes the linkage gear to provide power for the rotation of the shaft.

[0017] As a further embodiment of this utility model: the positioning unit includes a convex top block, a torsion spring, and a positioning baffle;

[0018] The top of the rotating shaft protrudes to the top of the upper support arm and is fixedly connected to the convex top block. The torsion spring is distributed between the top of the support arm and the bottom of the convex top block, and the two ends of the torsion spring are respectively connected to the support arm and the convex top block.

[0019] The positioning baffle is fixed to one side of the support arm and protrudes above the support arm, and the torsion spring continuously provides a deflection force to the convex top block toward the positioning baffle.

[0020] As a further improvement of this utility model: the maximum rotation angle of the gear driven by the toothed arm is 180 degrees, and when the moving mold is in the initial position, the included angle between the lateral part of the convex top block and the positioning baffle is 180 degrees.

[0021] As a further embodiment of this utility model: the demolding unit includes a demolding guide rod, a pusher rectangular plate, and a second pneumatic pusher;

[0022] The demolding guide rods are provided in four ways. The four demolding guide rods are fixed to the front end of the moving mold in a matrix distribution, and the four demolding guide rods are located on the outside of the moving mold protrusion module.

[0023] The pusher rectangular plate is sleeved on the outside of the moving mold protrusion module and is slidably connected to the four demolding guide rods;

[0024] The second pneumatic push rod is fixed to the rear end of the moving mold, and the output end of the second pneumatic push rod passes through the moving mold and is fixedly connected to the pusher rectangular plate.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] By setting up a material-grabbing component, the moving force of the moving mold can be used to rotate the demolded plastic product to the outer area of ​​the mold component, making it easy for workers to access and pick it up. During this process, it will not interfere with the secondary injection molding, which not only ensures the high production efficiency of injection molding, but also the driving force of the L-shaped material-grabbing arm comes from the moving mold, without the need for additional driving force. This makes it easy to add a material-grabbing component to the existing mold structure to achieve automatic material-grabbing operation. Attached Figure Description

[0027] Figure 1 is a schematic diagram of the structure of this utility model;

[0028] Figure 2 is a structural schematic diagram of this utility model from another perspective;

[0029] Figure 3 is a schematic diagram of the disassembled material handling component of this utility model.

[0030] In the diagram: 1. Mold assembly; 101. Fixed base; 102. Fixed guide rod; 103. Fixed mold; 104. First pneumatic push rod; 105. Moving mold; 106. Demolding guide rod; 107. Pushing rectangular plate; 108. Second pneumatic push rod; 2. Material handling assembly; 201. Support arm; 202. Rotating shaft; 203. L-shaped material handling arm; 204. Third pneumatic push rod; 205. Pneumatic suction cup; 206. Linkage gear; 207. Gear arm; 208. Convex ejector block; 209. Torsion spring; 210. Positioning baffle. Detailed Implementation

[0031] 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.

[0032] Please refer to Figures 1-3. In this embodiment of the present invention, a plastic product manufacturing device with an automatic demolding function includes a mold assembly 1 consisting of a fixed base 101, fixed guide rods 102, a fixed mold 103, a first pneumatic push rod 104, a moving mold 105, and a demolding unit. Four fixed guide rods 102 are arranged in a matrix and fixed between two fixed bases 101. The fixed mold 103 is fixed to one end of one fixed base 101. The first pneumatic push rod 104 is positioned at the other end of the other fixed base 101. The output end of the device passes through the fixed base 101 and is fixedly connected to the moving mold 105. The moving mold 105 is distributed between the two fixed bases 101 and is slidably sleeved with four fixed guide rods 102. The moving mold 105 is driven to move and close to the fixed mold 103 through the first pneumatic push rod 104 to close the mold, which is used to provide a cavity structure for molding plastic products. The demolding unit is installed at both ends of the moving mold 105 and is used to demold the molded plastic products. The fixed base 101 and the outside of the moving mold 105 are provided with a material picking component 2. The material picking component 2 is used to adsorb and transfer the demolded plastic products.

[0033] Material handling component 2 includes an adsorption unit, a linkage unit, and a positioning unit;

[0034] When the moving mold 105 separates from the fixed mold 103, it rotates to the front end of the moving mold 105 through the adsorption unit to adsorb and grasp the demolded plastic product.

[0035] The linkage unit is used to transmit the horizontal moving force of the moving mold 105 to the adsorption unit, so as to realize the rotation operation of the adsorption unit.

[0036] The positioning unit provides a positioning force for the initial position of the adsorption unit;

[0037] The adsorption unit includes a support arm 201, a rotating shaft 202, an L-shaped material picking arm 203, a third pneumatic push rod 204, and a pneumatic suction cup 205;

[0038] Two support arms 201 are provided, and the two support arms 201 are fixed vertically to the outside of the fixed seat 101 near the first pneumatic push rod 104;

[0039] The rotating shaft 202 is rotatably connected between the two support arms 201. The L-shaped material picking arm 203 is fixed to the middle of the outer side of the rotating shaft 202. The third pneumatic push rod 204 is installed at one end of the longitudinal plate of the L-shaped material picking arm 203. The output end of the third pneumatic push rod 204 passes through to the other end of the longitudinal plate and is fixedly connected to the pneumatic suction cup 205.

[0040] When the moving mold 105 separates from the fixed mold 103, the L-shaped picking arm 203 rotates around the rotating shaft 202 to make the third pneumatic push rod 204 and the pneumatic suction cup 205 located at the front end of the moving mold 105. The third pneumatic push rod 204 drives the pneumatic suction cup 205 to approach the demolded plastic product to achieve adsorption and gripping of the plastic product.

[0041] The linkage unit includes a linkage gear 206 and a gear arm 207;

[0042] The linkage gear 206 is fixed to the outside of the rotating shaft 202 and distributed below the L-shaped material handling arm 203;

[0043] The gear arm 207 is fixed to the bottom of the moving mold 105 and meshes with the side of the linkage gear 206. When the moving mold 105 moves horizontally, the gear arm 207 pushes the linkage gear 206 to provide power for the rotation of the rotating shaft 202.

[0044] The demolding unit includes a demolding guide rod 106, a pusher rectangular plate 107, and a second pneumatic pusher 108;

[0045] Four demolding guide rods 106 are provided. The four demolding guide rods 106 are fixed to the front end of the moving mold 105 in a matrix distribution, and the four demolding guide rods 106 are located on the outside of the convex module of the moving mold 105.

[0046] The pusher rectangular plate 107 is sleeved on the outside of the moving mold 105 convex module and is slidably connected to the four demolding guide rods 106;

[0047] The second pneumatic push rod 108 is fixed to the rear end of the moving mold 105, and the output end of the second pneumatic push rod 108 passes through the moving mold 105 and is fixedly connected to the pusher rectangular plate 107.

[0048] In this embodiment, it should be noted that the fixed base 101 connected to the fixed mold 103 is provided with an injection port that communicates with the inner cavity of the fixed mold 103. When producing plastic products, the moving mold 104 is pushed closer to the fixed mold 103 by the first pneumatic push rod 104, which can realize the mold closing operation between the moving mold 104 and the fixed mold 103, and then injection molding can be performed.

[0049] After the plastic product cools and solidifies, the first pneumatic push rod 104 reverses to achieve the separation operation between the moving mold 104 and the fixed mold 103, and then the demolding operation can be performed through the demolding assembly.

[0050] When the moving mold 104 is in the initial position (as shown in Figure 1 / 2), the longitudinal part of the L-shaped pick-up arm 203 is located at the front end of the moving mold 104. When the first pneumatic push rod 104 pushes the moving mold 104 closer to the fixed mold 103, the gear arm 207 provides a thrust to the linkage gear 206, causing the linkage gear 206, the rotating shaft 202, and the L-shaped pick-up arm 203 to rotate. When the gear arm 207 separates from the linkage gear 206, the linkage gear 206 rotates exactly 180 degrees, which in turn causes the L-shaped pick-up arm 203 to rotate outward by 180 degrees, so that the L-shaped pick-up arm 203 does not affect the mold closing operation of the moving mold 104.

[0051] When the first pneumatic push rod 104 reverses and drives the moving mold 104 to reset to its initial position, the L-shaped material handling arm 203 resets to its initial state again. At this time, the second pneumatic push rod 108 is activated to push the pusher rectangular plate 107 to move. The pusher rectangular plate 107 pushes the plastic product formed on the outside of the protrusion module of the moving mold 105, so that the plastic product is close to the pneumatic suction cup 205. At the same time, the third pneumatic push rod 204 moves synchronously to push the pneumatic suction cup 205 closer to the plastic product. Finally, the plastic product replaces the pneumatic suction cup 205, and the pneumatic suction cup 205 adsorbs and fixes the plastic product. Then, the third pneumatic push rod 204 and the second pneumatic push rod 108 reset and run. At this time, the pneumatic suction cup 205 drives the plastic product to completely separate from the protrusion module of the moving mold 105.

[0052] Subsequently, the first pneumatic push rod 104 operates to perform a secondary mold closing between the moving mold 105 and the fixed mold 103. During this process, the outwardly flipping L-shaped material-retrieving arm 203 drives the plastic finished product to rotate to the outer area of ​​the mold assembly 1, making it easy for workers to access and remove it. This process does not interfere with the secondary injection molding, ensuring high production efficiency in injection molding. Furthermore, the driving force of the L-shaped material-retrieving arm 203 comes from the moving mold 105, eliminating the need for additional driving force. This allows for the addition of the material-retrieving assembly 2 to the existing mold structure to achieve automatic material-retrieving operation.

[0053] Please refer to Figures 1-3 for details. The positioning unit includes a convex top block 208, a torsion spring 209, and a positioning baffle 210.

[0054] The top of the rotating shaft 202 protrudes to the top of the upper support arm 201 and is fixedly connected to the convex top block 208. The torsion spring 209 is distributed between the top of the support arm 201 and the bottom of the convex top block 208, and the two ends of the torsion spring 209 are respectively connected to the support arm 201 and the convex top block 208.

[0055] The positioning baffle 210 is fixed to one side of the support arm 201 and protrudes above the support arm 201. The torsion spring 209 always provides the convex top block 208 with a deflection force toward the positioning baffle 210.

[0056] The maximum rotation angle of the gear arm 207 driving the linkage gear 206 is 180 degrees. When the moving mold 105 is in the initial position, the angle between the lateral part of the convex top block 208 and the positioning baffle 210 is 180 degrees.

[0057] In this embodiment: when the moving mold 105 and the fixed mold 103 are in the closed state, the L-shaped material picking arm 203 flips to the outside of the mold assembly 1. At this time, the torsion spring 209 is still in a torsional deformation state, which makes the convex top block 208 and the positioning baffle 210 keep in close contact, thereby ensuring the position stability of the L-shaped material picking arm 203. At the same time, it provides a guarantee for the subsequent contact and meshing of the toothed arm and the linkage gear 206, so that when the moving mold 105 is reset, the rotation angle of the L-shaped material picking arm 203 is 180 degrees, realizing the stable operation of the material picking assembly 2.

[0058] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A plastic product manufacturing apparatus with an automatic demolding function, comprising a mold assembly (1) consisting of a fixed base (101), fixed guide rods (102), a fixed mold (103), a first pneumatic push rod (104), a moving mold (105), and a demolding unit, wherein four fixed guide rods (102) are arranged in a matrix and fixed between two fixed bases (101), the fixed mold (103) is fixed to one end of one fixed base (101), and the first pneumatic push rod (104) is positioned relative to the other fixed base (105). The other end of 01), and the output end of the first pneumatic push rod (104) passes through to the fixed seat (101) and is fixedly connected to the moving mold (105). The moving mold (105) is distributed between the two fixed seats (101) and is slidably sleeved with four fixed guide rods (102). The moving mold (105) is driven by the first pneumatic push rod (104) to move and approach the fixed mold (103) to close the mold, which is used to provide a cavity structure for the molding of plastic products. The demolding unit is installed at both ends of the moving mold (105) and is used to demold the molded plastic products. The feature is that, A material-grabbing component (2) is provided on the outside of the fixed base (101) and the moving mold (105). The material-grabbing component (2) is used to adsorb and transfer the demolded plastic product. The material-grabbing component (2) includes an adsorption unit, a linkage unit, and a positioning unit. When the moving mold (105) separates from the fixed mold (103), it rotates to the front end of the moving mold (105) through the adsorption unit to adsorb and grab the demolded plastic product. The linkage unit is used to transmit the horizontal movement force of the moving mold (105) to the adsorption unit to realize the rotation operation of the adsorption unit. The positioning unit provides positioning force for the initial position of the adsorption unit.

2. The plastic product manufacturing apparatus with automatic demolding function according to claim 1, characterized in that, The adsorption unit includes a support arm (201), a rotating shaft (202), an L-shaped material-collecting arm (203), a third pneumatic push rod (204), and a pneumatic suction cup (205). Two support arms (201) are provided, each fixed vertically to the outside of a mounting base (101) near the first pneumatic push rod (104). The rotating shaft (202) is rotatably connected between the two support arms (201). The L-shaped material-collecting arm (203) is fixed to the middle of the outer side of the rotating shaft (202). The third pneumatic push rod (204) is mounted on... At one end of the longitudinal plate of the L-shaped material handling arm (203), the output end of the third pneumatic push rod (204) extends through to the other end of the longitudinal plate and is fixedly connected to the pneumatic suction cup (205); when the moving mold (105) separates from the fixed mold (103), the L-shaped material handling arm (203) rotates around the pivot (202) so that the third pneumatic push rod (204) and the pneumatic suction cup (205) are located at the front end of the moving mold (105). The third pneumatic push rod (204) drives the pneumatic suction cup (205) to approach the demolded plastic product, thereby achieving adsorption and gripping of the plastic product.

3. The plastic product manufacturing apparatus with automatic demolding function according to claim 1, characterized in that, The linkage unit includes a linkage gear (206) and a gear arm (207); the linkage gear (206) is fixed to the outside of the rotating shaft (202) and distributed below the L-shaped material handling arm (203); the gear arm (207) is fixed to the bottom of the moving mold (105) and meshes with the side of the linkage gear (206). When the moving mold (105) moves horizontally, it pushes the linkage gear (206) through the gear arm (207) to provide power for the rotation of the rotating shaft (202).

4. A plastic product manufacturing apparatus with automatic demolding function according to claim 3, characterized in that, The positioning unit includes a convex top block (208), a torsion spring (209), and a positioning baffle (210); the top of the rotating shaft (202) protrudes to the top of the upper support arm (201) and is fixedly connected to the convex top block (208); the torsion spring (209) is distributed between the top of the support arm (201) and the bottom of the convex top block (208), and the two ends of the torsion spring (209) are respectively connected to the support arm (201) and the convex top block (208); the positioning baffle (210) is fixed to one side of the support arm (201) and protrudes above the support arm (201); the torsion spring (209) continuously provides the convex top block (208) with a deflection force toward the positioning baffle (210).

5. A plastic product manufacturing apparatus with automatic demolding function according to claim 4, characterized in that, The maximum rotation angle of the gear arm (207) driving the linkage gear (206) is 180 degrees. When the moving mold (105) is in the initial position, the angle between the lateral part of the convex top block (208) and the positioning baffle (210) is 180 degrees.

6. A plastic product manufacturing apparatus with automatic demolding function according to claim 1, characterized in that, The demolding unit includes demolding guide rods (106), a pusher rectangular plate (107), and a second pneumatic pusher (108). There are four demolding guide rods (106), which are fixed to the front end of the moving mold (105) in a matrix distribution, and the four demolding guide rods (106) are located on the outside of the convex module of the moving mold (105). The pusher rectangular plate (107) is sleeved on the outside of the convex module of the moving mold (105) and is slidably connected to the four demolding guide rods (106). The second pneumatic pusher (108) is fixed to the rear end of the moving mold (105), and the output end of the second pneumatic pusher (108) passes through the moving mold (105) and is fixedly connected to the pusher rectangular plate (107).

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