Needle mounting robot for injection molding

Abstract

The utility model discloses a kind of needle mounting manipulators for injection molding, including mounting seat, clamping jaw cylinder and front push cylinder;Clamping jaw cylinder includes the first cylinder body of hollow cylinder being set in mounting seat and for along front-back direction, limiting piece being connected on the front end surface of first cylinder body, clamping piece being slidably arranged on first cylinder body;Limiting piece is used to bear injection needle and pass out the bottom side of first cylinder body portion, clamping piece is used to cooperate limiting piece and hold injection needle, limiting piece is used to allow injection needle to float relative to it along up-down direction and / or left-right direction under external force when clamping piece loosens;Front push cylinder includes the second cylinder body being connected in mounting seat, push rod being telescopically arranged in second cylinder body, push rod and the center through-hole of first cylinder body coaxial line arrangement, push rod is used to push injection needle forward when extending out.The utility model needle mounting manipulator for injection molding, can solve the problem of insertion failure and collision due to different shafts during the insertion process of injection needle.

Description

Technical Field

[0001] This utility model relates to the field of injection molding product manufacturing, and in particular to a needle loading robot for injection molding. Background Technology

[0002] When a product is being injection molded, the injection needle needs to be inserted into the hole of the mold. When the injection needle is not coaxial with the hole of the mold, the injection needle may not be able to be inserted or may even be damaged because it is always clamped by the clamping cylinder during the insertion process.

[0003] In the prior art, by setting the clamping component to move along the X and Y axes on the carrier component, it can only solve the problem of eccentricity when the injection pin and the hole of the mold are coaxial, but it cannot solve the problem of difficult insertion when the two are not coaxial. Utility Model Content

[0004] The purpose of this invention is to provide a needle-loading robot for injection molding that can solve the problems of insertion failure and damage caused by misalignment of injection needles during the insertion process.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A needle-loading robot for injection molding, comprising: Mounting base, the mounting base being used to connect a connecting arm arranged in the left-right direction; A gripper cylinder includes a first cylinder body connected to the mounting base. The first cylinder body is a hollow cylinder arranged in a front-rear direction and used to accommodate an injection needle. The gripper cylinder also includes a limiting member connected to the front end face of the first cylinder body and a clamping member slidably disposed on the first cylinder body in a direction close to or away from the limiting member. The injection needle extends forward through the first cylinder body. The limiting member is used to support the bottom side of the protruding part of the injection needle. The clamping member is used to cooperate with the limiting member to clamp the injection needle. The limiting member is used to allow the injection needle to float relative to it in the up-down direction and / or left-right direction under the action of an external force when the clamping member is released. The front push cylinder includes a second cylinder connected to the mounting base and located behind the first cylinder, and a push rod that is telescopically disposed in the second cylinder. The push rod is coaxially arranged with the central through hole of the first cylinder and is used to push the injection needle in the central through hole forward when extended.

[0006] Preferably, the injection molding needle-loading robot has a first working state and a second working state: When the injection molding needle loading robot is in the first working state, the clamping member is used to cooperate with the limiting member to clamp the injection needle; When the injection molding needle loading robot is in the second working state, the clamping member is used to release the injection needle, the limiting member is used to support the bottom side of the injection needle, and allows the injection needle to float relative to the limiting member in the up-down and / or left-right directions under the action of external force when it is pushed out by the push rod.

[0007] More preferably, when the injection molding needle loading robot is in the second working state, the limiting member is located directly below the injection needle.

[0008] Preferably, the limiting member is arranged in the front-rear direction, and the limiting member is connected to the front end face of the first cylinder body through its rear end.

[0009] Preferably, the inner surface of the limiting member is an arc surface, and the limiting member fits the outer circumferential surface of the injection needle through its inner surface.

[0010] More preferably, the curvature of the inner surface of the limiting member is α, where 0 < α < 180°.

[0011] More preferably, α = 150°.

[0012] Preferably, the push rod includes a body that is telescopically disposed in the second cylinder along its own length extension direction, and a push rod connected to the body and passing through the central through hole of the first cylinder.

[0013] More preferably, the rear end of the push rod is provided with a limiting ring, the outer diameter of which is larger than the diameter of the central through hole.

[0014] Preferably, the mounting base includes a first mounting plate and a second mounting plate spaced apart in a front-rear direction, the first mounting plate being located in front of the second mounting plate, the connecting arm being connected between the first mounting plate and the second mounting plate, and the gripper cylinder and the forward push cylinder being respectively connected to the first mounting plate; the injection molding needle loading robot also includes a flexible gripper connected to the rear end face of the second mounting plate, the flexible gripper being used to grip the injection-molded product.

[0015] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: The injection molding needle-loading robot of this utility model, by setting a limiting member on the front end face of the first cylinder, supports the bottom side of the injection needle as it extends forward through the first cylinder. When the injection needle needs to be inserted into the hole of the mold, after the robot moves into position, the clamping member releases the injection needle. During the process of the front push cylinder pushing the injection needle forward to the insertion hole of the mold, the limiting member plays a supporting and guiding role. After the injection needle is inserted into the hole of the mold, under the action of the inner wall of the hole, the injection needle can adaptively float and adjust relative to the limiting member in the vertical and / or horizontal directions, thereby ensuring concentric insertion. This injection molding needle-loading robot has a simple structure and can solve the problems of insertion failure and damage caused by misalignment of the injection needle during the insertion process. Attached Figure Description

[0016] Appendix Figure 1 This is a schematic diagram of the structure of a needle-loading robot for injection molding according to a specific embodiment of the present invention; Appendix Figure 2 For the appendix Figure 1 Enlarged structural diagram at point A; Appendix Figure 3 This is a side view of a needle-loading robot for injection molding according to a specific embodiment of the present invention; Appendix Figure 4 This is a partial cross-sectional view of a needle-loading robot for injection molding according to a specific embodiment of the present invention.

[0017] The components are: 1. Mounting base; 11. First mounting plate; 12. Second mounting plate; 2. Connecting arm; 3. Gripper cylinder; 31. First cylinder body; 32. Limiting component; 33. Clamping component; 4. Injection needle; 5. Front push cylinder; 51. Second cylinder body; 52. Push rod; 521. Body; 522. Top rod; 523. Limiting ring; 6. Flexible gripper. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to specific embodiments and accompanying drawings.

[0019] See Figure 1 As shown, this embodiment provides a needle-loading robot for injection molding, including a mounting base 1, a gripper cylinder 3 and a pusher cylinder 5 respectively connected to the mounting base 1. In this embodiment, the gripper cylinder 3 and the pusher cylinder 5 are both cylinders. This needle-loading robot for injection molding is used to insert injection needles 4 into the holes of the mold.

[0020] The aforementioned mounting base 1 is used to connect the connecting arm 2, which is arranged in the left-right direction. The connecting arm 2 is connected to the mounting base 1 through one end and to the robotic arm (not shown in the figure) through the other end. The robotic arm drives the connecting arm 2 to rotate around its own axis. The robotic arm can also drive the mounting base 1 to move through the connecting arm 2.

[0021] See Figure 2 As shown, the gripper cylinder 3 includes a first cylinder body 31 connected to the mounting base 1. The first cylinder body 31 is a hollow cylinder arranged in the front-rear direction and used to mount the injection needle 4. The gripper cylinder 3 also includes a limiting member 32 connected to the front end face of the first cylinder body 31 and a clamping member 33 slidably disposed on the first cylinder body 31 in a direction close to or away from the limiting member 32. In this embodiment, the sliding direction of the clamping member 33 is parallel to the radial direction of the first cylinder body 31. The connection structure between the clamping member 33 and the first cylinder body 31 is similar to that of a three-jaw cylinder, which is prior art and will not be described in detail here.

[0022] The injection needle 4 extends forward through the first cylinder 31. The limiting member 32 is used to support the bottom side of the protruding part of the injection needle 4, and the clamping member 33 is used to cooperate with the limiting member 32 to clamp the injection needle 4. After the clamping member 33 releases the injection needle 4, the limiting member 32 allows the injection needle 4 to float relative to it in the vertical and / or horizontal directions under the action of external force.

[0023] The front push cylinder 5 includes a second cylinder 51 connected to the mounting base 1 and located behind the first cylinder 31, and a push rod 52 that is telescopically disposed in the second cylinder 51 in the front-rear direction. The push rod 52 is coaxially arranged with the central through hole of the first cylinder 31. The push rod 52 is used to push the injection needle 4 in the central through hole forward when it extends, thereby pushing the injection needle 4 into the hole of the mold.

[0024] In this embodiment, there are four sets of gripper cylinders 3 and four sets of front push cylinders 5, which are arranged on the mounting base 1 in a corresponding manner along the front-back direction.

[0025] Specifically, the limiting member 32 is arranged in the front-rear direction, and the length direction of the limiting member 32 is parallel to the axial direction of the central through hole of the first cylinder 31. The limiting member 32 is connected to the front end face of the first cylinder 31 through its rear end.

[0026] Specifically, the inner surface of the limiting member 32 is an arc surface. The limiting member 32 conforms to the outer circumference of the injection needle 4 through its inner surface, so as to cooperate with the clamping member 33 to stably clamp the injection needle 4. The curvature of the inner surface of the limiting member 32 is α, where 0 < α < 180°. In this embodiment, α = 150°. This setting can prevent the limiting member 32 from wrapping around the injection needle 4 circumferentially, so that the injection needle 4 can float relative to the limiting member 32 in the vertical and / or horizontal directions under the action of external force.

[0027] See Figure 4 As shown, the push rod 52 includes a body 521 that is telescopically disposed in the second cylinder 51 along its own length extension direction, and a push rod 522 connected to the body 521 and passing through the central through hole of the first cylinder 31. The push rod 522 is used to push the injection needle 4 outward.

[0028] In this embodiment, a limiting ring 523 is provided at the rear end of the push rod 522. The limiting ring 523 is radially protruding on the circumferential side of the push rod 522. The outer diameter of the limiting ring 523 is larger than the diameter of the central through hole. By setting the limiting ring 523, the entire push pin can be prevented from entering the central through hole of the first cylinder 31, thereby limiting the insertion stroke of the injection needle 4.

[0029] See Figure 3 As shown, the mounting base 1 includes a first mounting plate 11 and a second mounting plate 12 spaced apart in the front-rear direction. The first mounting plate 11 is located in front of the second mounting plate 12. The connecting arm 2 is connected between the first mounting plate 11 and the second mounting plate 12. The gripper cylinder 3 and the front push cylinder 5 are respectively connected to the first mounting plate 11.

[0030] The aforementioned injection molding manipulator also includes a flexible gripper 6 connected to the rear end face of the second mounting plate 12. This flexible gripper 6 is used to grip the injection-molded product. After injection molding is completed, the connecting arm 2 is driven by the robotic arm to rotate around its axis, aligning the flexible gripper 6 with the injection-molded product for clamping.

[0031] The aforementioned injection molding needle-loading robot has a first working state and a second working state: When the injection molding needle loading robot is in its first working state, the clamping member 33 is used to cooperate with the limiting member 32 to clamp the injection needle 4; When the injection molding needle-loading robot is in its second working state, the clamping member 33 is used to release the injection needle 4, and the limiting member 32 is used to support the bottom side of the injection needle 4, allowing the injection needle 4 to float relative to the limiting member 32 in the vertical and / or horizontal directions under the action of external force when it is pushed out by the push rod 52. The external force mentioned here refers to the force of the inner wall of the mold hole pressing the injection needle 4. Through compression, the injection needle 4 adaptively adjusts to be coaxial with the mold hole and is inserted into place under the action of the push rod 52.

[0032] Specifically, when the injection molding needle loading robot is in the second working state, the limiting member 32 is located directly below the injection needle 4. This limiting member 32 is used not only to clamp the injection needle 4 in conjunction with the clamping member 33 when the injection molding needle loading robot is in the first working state, but also to support the injection needle 4 when the injection molding needle loading robot switches from the first working state to the second working state, preventing it from falling out during the process of entering the mold hole.

[0033] The working process of this embodiment is described in detail below: First, insert the injection needle 4, then drive the clamping component 33 to cooperate with the limiting component 32 to clamp the injection needle 4; Next, the robotic arm drives the mounting base 1 to move, so that the injection needle 4 is aligned with the hole in the mold; Then drive the clamping member 33 to release the injection needle 4, and drive the push rod 52 to push the injection needle 4 into the hole of the mold; Under the guidance of the limiting member 32, the injection pin 4 enters the hole of the mold. Under the action of the inner wall of the hole, the injection pin 4 adaptively adjusts to be coaxial with the hole. After the injection pin 4 is inserted into the position, the push rod 52 is driven to retract and return to its original position.

[0034] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A needle-loading robot for injection molding, characterized in that, include: Mounting base (1), the mounting base (1) is used to connect the connecting arm (2) arranged in the left and right direction; The gripper cylinder (3) includes a first cylinder body (31) connected to the mounting base (1), the first cylinder body (31) being a hollow cylinder arranged in the front-rear direction and used to mount the injection needle (4); the gripper cylinder (3) also includes a limiting member (32) connected to the front end face of the first cylinder body (31) and a clamping member (33) slidably disposed on the first cylinder body (31) in a direction close to or away from the limiting member (32); the injection needle (4) extends forward through the first cylinder body (31), the limiting member (32) is used to support the bottom side of the protruding part of the injection needle (4), the clamping member (33) is used to cooperate with the limiting member (32) to clamp the injection needle (4), and the limiting member (32) is used to allow the injection needle (4) to float relative to it in the up-down direction and / or left-right direction under the action of external force when the clamping member (33) is released; The front push cylinder (5) includes a second cylinder (51) connected to the mounting base (1) and located behind the first cylinder (31), and a push rod (52) that is telescopically disposed in the second cylinder (51) in the front-rear direction. The push rod (52) is coaxially arranged with the central through hole of the first cylinder (31). The push rod (52) is used to push the injection needle (4) in the central through hole forward when extended.

2. The injection molding needle-loading robot according to claim 1, characterized in that: The injection molding needle-loading robot has a first working state and a second working state: When the injection molding needle loading robot is in the first working state, the clamping member (33) is used to cooperate with the limiting member (32) to clamp the injection needle (4). When the injection molding needle loading robot is in the second working state, the clamping member (33) is used to release the injection needle (4), the limiting member (32) is used to support the bottom side of the injection needle (4), and allows the injection needle (4) to float relative to the limiting member (32) in the up-down direction and / or left-right direction under the action of external force when it is pushed out by the push rod (52).

3. The injection molding needle-loading robot according to claim 2, characterized in that: When the injection molding needle loading robot is in the second working state, the limiting member (32) is located directly below the injection needle (4).

4. The injection molding needle-loading robot according to claim 1, characterized in that: The limiting member (32) is arranged in the front-rear direction, and the limiting member (32) is connected to the front end face of the first cylinder (31) through its rear end.

5. The injection molding needle-loading robot according to claim 1, characterized in that: The inner surface of the limiting member (32) is an arc surface, and the limiting member (32) fits the outer circumference of the injection needle (4) through its inner surface.

6. The injection molding needle-loading robot according to claim 5, characterized in that: The curvature of the inner surface of the limiting member (32) is α, where 0 < α < 180°.

7. The injection molding needle-loading robot according to claim 6, characterized in that: α=150°。 8. The injection molding needle-loading robot according to claim 1, characterized in that: The push rod (52) includes a body (521) that is telescopically disposed in the second cylinder (51) along its own length extension direction, and a push rod (522) connected to the body (521) and passing through the central through hole of the first cylinder (31).

9. The injection molding needle-loading robot according to claim 8, characterized in that: The rear end of the top rod (522) is provided with a limiting ring (523), the outer diameter of which is larger than the diameter of the central through hole.

10. The injection molding needle-loading robot according to claim 1, characterized in that: The mounting base (1) includes a first mounting plate (11) and a second mounting plate (12) spaced apart in the front-rear direction. The first mounting plate (11) is located in front of the second mounting plate (12). The connecting arm (2) is connected between the first mounting plate (11) and the second mounting plate (12). The gripper cylinder (3) and the front push cylinder (5) are respectively connected to the first mounting plate (11). The injection molding needle loading robot also includes a flexible gripper (6) connected to the rear end face of the second mounting plate (12). The flexible gripper (6) is used to grip the injection-molded product.

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