Manipulator discharging clamp for automatic injection molding machine

Abstract

The utility model discloses a manipulator blanking clamp for an automatic injection molding machine, which is matched with the injection molding machine and a manipulator for use, and comprises a top plate, a plurality of suction head components, two deflection plate components, a pushing component and a reset spring, the deflection plate assembly is rotatably connected to the lower portion of the top plate, and the end, close to the center line in the length direction of the top plate, of the deflection plate assembly is connected with a reset spring. The pushing assembly comprises a pushing cylinder and a pushing plate. According to the manipulator discharging clamp, a plurality of workpieces can be sucked at a time and placed on a temporary storage frame according to requirements, the discharging efficiency can be remarkably improved, and the overall operation takt is accelerated. According to the specific structure, the angles of the two suction cups on the outer side of the clamp can be adjusted through the pushing air cylinder, so that the clamp can meet the requirements of linear suction from injection molding equipment and arc placement on a temporary storage frame, the overall structure is simple, action and communication are achieved through a mechanical structure, and on-site adjustment can be facilitated.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, specifically to a robotic arm unloading clamp for an automated injection molding machine. Background Technology

[0002] Due to its lightweight and ease of molding, plastic is commonly used to manufacture grenade casings. The casings of China's Type 82-2 grenade and the German DM51 grenade are both made of plastic. Currently, injection molding is the most common process for casing molding, offering advantages such as high manufacturing precision, good consistency, high production efficiency, and cost-effectiveness for mass production. To improve the automation level of injection molding machine operations, robotic arms are widely used for automated loading and unloading. Further optimization and improvement of the fixtures are necessary to enhance work efficiency based on specific requirements.

[0003] In the applicant's production operations, due to the needs of subsequent processes, the robotic arm needs to arrange multiple batches of semi-finished shells in a circular pattern after taking them out of the injection molding machine. However, during injection molding production, multiple semi-finished shells are arranged in a straight line. In the past, the robotic arm used a vacuum suction cup clamp to take the shells out of the injection molding equipment one by one and place them on a temporary storage rack, resulting in low material unloading efficiency and affecting the work cycle. Summary of the Invention

[0004] The purpose of this invention is to provide a robotic arm unloading fixture for automated injection molding machines to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention provides an automated injection molding machine robotic unloading fixture, used in conjunction with an injection molding machine and a robotic arm, for transferring semi-finished grenade shells produced by the injection molding machine to a temporary storage rack. The unloading fixture includes a top plate, several suction head assemblies, two deflection plate assemblies, a pushing assembly, and a return spring. The deflection plate assemblies are rotatably connected to the lower part of the top plate, and the two deflection plate assemblies are symmetrically arranged along the centerline of the length direction of the top plate. A return spring is connected to the end of the deflection plate assembly near the centerline of the length direction of the top plate. The pushing assembly includes a pushing cylinder and a pushing plate. The pushing plate is fixed to the end of the piston rod of the pushing cylinder, and both sides of the pushing plate are in contact with the deflection plates.

[0006] Furthermore, the temporary storage rack includes an upper ring and several lower support feet, with the lower support feet fixed to the lower part of the upper ring, and the upper ring having an array of circular holes.

[0007] Furthermore, the deflection plate assembly includes a deflection plate and a rotating bearing. The deflection plate is a bent sheet material, and the bent part is rotatably connected to the lower part of the top plate through the rotating bearing. A return spring is connected to the end of the deflection plate near the centerline of the length direction of the top plate.

[0008] Furthermore, the pushing assembly also includes a pushing cylinder pushing bearing and a pushing limit rod; the pushing limit rod is fixedly mounted on the top plate, and a through hole is provided on the pushing plate through which the pushing limit rod passes.

[0009] Furthermore, the pushing assembly also includes a pushing cylinder pushing bearing; the pushing bearing is disposed on both sides of the pushing plate, the pushing bearing is rotatably disposed on the pushing plate, and the outer side of the pushing bearing is in contact with the deflection plate.

[0010] Furthermore, the unloading fixture includes two suction head assemblies, each comprising a suction cup head and a suction tube. Two of these are symmetrically arranged on either side of the centerline of the top plate along its length, while the other two are located at the end of the deflection plate near the centerline of the top plate along its length.

[0011] Furthermore, the suction head is larger than the size of the adsorption position of the grenade shell semi-finished product, and the suction tubes of the two suction head assemblies located in the middle are longer than those on both sides.

[0012] Furthermore, the difference in suction tube length is less than the longitudinal deformation of the suction head.

[0013] The robotic arm unloading fixture proposed in this utility model can pick up multiple materials at once and place them on a temporary storage rack as required, which can significantly improve unloading efficiency and speed up the overall operation cycle.

[0014] In terms of specific structure, the angle of the two suction cups on the outer side of the fixture can be adjusted by pushing the cylinder, so that it can adapt to the requirements of straight suction from the injection molding equipment and arc placement on the temporary storage rack. The overall structure is relatively simple, and the action and connection are realized through the mechanical structure, which can facilitate on-site adjustment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the material feeding fixture of this utility model.

[0016] Figure 2 This is a schematic diagram illustrating the application scenario of the material feeding fixture of this utility model.

[0017] Figure 3 This is a schematic diagram of the temporary storage rack used in the material unloading fixture of this utility model.

[0018] Figure 4 This is a schematic diagram of the material feeding fixture of this utility model from another perspective.

[0019] Figure 5 This is a schematic diagram of the material unloading clamp after the top plate has been removed. Detailed Implementation

[0020] 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.

[0021] As attached Figure 1-2 As shown, the present invention relates to an automated injection molding machine robotic arm unloading fixture, which is used in conjunction with injection molding machine a and robotic arm b to transfer semi-finished products produced by the injection molding machine to temporary storage rack c.

[0022] As attached Figure 1 , 2 As shown in Figure 3, the temporary storage rack c includes an upper ring c1 and several lower support feet c2. The lower support feet c2 are fixed to the lower part of the upper ring c1. The upper ring c1 is provided with an array of circular holes for placing semi-finished hand grenades.

[0023] As attached Figure 1 , 4 As shown in Figure 5, the unloading clamp 1 includes a top plate 11, several suction head assemblies 12, two sets of deflection plate assemblies 13, a pushing assembly 14, and a return spring 15.

[0024] The deflection plate assembly 13 includes a deflection plate 131 and a rotating bearing 132. The deflection plate 131 is a bent sheet material, and the bent part is rotatably connected to the lower part of the top plate 11 through the rotating bearing 132. The two deflection plates 131 are symmetrically arranged along the centerline of the length direction of the top plate 11. A return spring 15 is connected to the end of the deflection plate 131 near the centerline of the length direction of the top plate 11.

[0025] The push assembly 14 includes a push cylinder 141, a push plate 142, a push bearing 143, and a push limit rod 144.

[0026] The push cylinder 141 is fixed at the center of the top plate 11 along its length, and the push plate 142 is fixed at the end of the piston rod of the push cylinder 141. Both sides of the push plate 142 are in contact with the deflection plate 131. When the push cylinder 141 extends, the push plate 142 pushes the deflection plate 131 to deflect. When the push cylinder 141 retracts, the deflection plate 131 returns to its original position under the action of the return spring 15.

[0027] To improve the repeatability of the forward and backward movement of the push plate 142, the push limiting rod 144 is fixedly mounted on the top plate 11, and a through hole is provided on the push plate 142 through which the push limiting rod 144 passes.

[0028] To improve the smoothness of the push plate 142 pushing the deflection plate 131, push bearings 143 are provided on both sides of the push plate 142. The push bearings 143 are rotatably mounted on the push plate 142, and the outer side of the push bearings 143 contacts the deflection plate 131. The push bearings 143 push the deflection plate 131.

[0029] The suction head assembly 12 includes a suction head 121 and a suction tube 122. In one embodiment of this application, four suction head assemblies 12 are included, two of which are symmetrically arranged on both sides of the center line of the top plate 11 in the length direction, and the other two are arranged at the end of the deflection plate 131 near the center line of the top plate 11 in the length direction.

[0030] When the push plate 142 is in the initial position, the four suction head assemblies 12 are in the same straight line. When the push plate 142 moves forward / backward, the two outer suction head assemblies 12 are rotated on the deflection plate 131, thereby placing the grenade semi-finished product on the temporary storage rack.

[0031] The deflection angle between adjacent circular holes on the temporary storage rack is small, and the size of the circular holes is larger than the bottom size of the grenade shell semi-finished product. Therefore, even if the two suction head assemblies 12 in the center are arranged in a straight line, the grenades they have attracted can be placed into the central circular hole. In addition, to further improve flexibility, the size of the suction head 121 is larger than the size of the grenade shell semi-finished product's adsorption position, and the suction tubes of the two suction head assemblies in the middle are slightly longer than those on the sides. Position compensation is performed when placing the semi-finished product on the two central suction heads by the action of the robotic arm. The difference in suction tube length should be less than the longitudinal deformation of the suction head 121 so as not to affect the suction operation. In one embodiment of the applicant, this length is 0.8 cm. During placement, since the two central suction tubes are slightly longer, they first contact the circular holes on the temporary storage rack. Then, the robotic arm can move the two central semi-finished products into the circular holes at a slightly inclined angle, and then place the semi-finished products on the sides.

[0032] It should be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A mechanical hand unloading clamp for automatic injection molding machine, which is used in cooperation with injection molding machine and mechanical hand, and is used for transferring hand grenade shell semi-finished product produced by injection molding machine to temporary storage rack, characterized in that, The blanking clamp comprises a top plate, a plurality of suction head assemblies, two deflection plate assemblies, a pushing assembly and a return spring; the deflection plate assemblies are rotatably connected to the lower part of the top plate, and the two deflection plate assemblies are symmetrically arranged along the length direction center line of the top plate; the return spring is connected to the end of the deflection plate assembly close to the length direction center line of the top plate; the pushing assembly comprises a pushing cylinder and a pushing plate; the pushing plate is fixed to the end of the piston rod of the pushing cylinder, and the pushing plate is in contact with the deflection plates on both sides.

2. The mechanical hand unloading clamp for an automatic injection molding machine according to claim 1, wherein, The temporary storage rack comprises an upper ring and a plurality of lower supporting feet fixed to the lower part of the upper ring, and the upper ring is provided with a plurality of circular holes arranged in an array.

3. The mechanical hand stripper for an automated injection molding machine of claim 1, wherein, The deflection plate assembly comprises a deflection plate and a rotating bearing, the deflection plate is a bent plate, and the bending part is rotatably connected to the lower part of the top plate through the rotating bearing; the return spring is connected to the end of the deflection plate close to the length direction center line of the top plate.

4. The mechanical hand stripper for an automated injection molding machine of claim 1 wherein, The pushing assembly further comprises a pushing cylinder pushing bearing and a pushing limiting rod; the pushing limiting rod is fixedly arranged on the top plate, and the pushing limiting rod passes through the through hole arranged on the pushing plate.

5. The mechanical hand scrap stripper for an automated injection molding machine of claim 1 wherein, The pushing assembly further comprises a pushing cylinder pushing bearing; the pushing bearing is arranged on both sides of the pushing plate, and the pushing bearing is rotatably arranged on the pushing plate; the outer side of the pushing bearing is in contact with the deflection plate.

6. The mechanical hand blanking clamp for the automatic injection molding machine according to claim 1, characterized in that, The blanking clamp comprises two suction head assemblies, the suction head assembly comprises a suction disc head and a suction pipe, and the two suction head assemblies arranged symmetrically in the middle are arranged on both sides of the length direction center line of the top plate, and the other two are arranged at the ends of the deflection plates close to the length direction center line of the top plate.

7. The mechanical hand blanking clamp for the automatic injection molding machine according to claim 6, characterized in that, The size of the suction disc head is larger than that of the suction position of the grenade shell semi-finished product, and the suction pipes of the two suction head assemblies arranged in the middle are longer than those on both sides.

8. The mechanical hand blanking clamp for the automatic injection molding machine according to claim 7, characterized in that, The length difference of the suction pipes is smaller than the longitudinal deformation amount of the suction disc head.

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