Rapid clamping foot external pressing machine

Abstract

The utility model relates to a rapid clamping foot external pressing machine which comprises an upper die and a lower die, a die cavity matched with a workpiece with a clamping foot in appearance is formed in the upper surface of the center of the lower die, and the upper die can be controlled by a linear reciprocating power device to ascend and descend in the height direction. A plurality of protruding block sets used for bending the clamping feet towards the outer side of the workpiece are arranged on the lower portion of the upper die, and each protruding block set comprises a side sliding push rod and a positive pressure pressing rod which are arranged side by side. The clamping foot assembling efficiency is high, bending actions in two directions can be completed at the same time through single-time lifting of the linear reciprocating power devices to achieve external pressing of clamping feet, the number of the arranged linear reciprocating power devices can be reduced, and the device is simple in structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamping foot assembly equipment, in particular to a fast clamping foot external press machine. Background Art

[0002] Metal mesh covers are usually used for car door audio or household appliance surfaces. The existing metal mesh cover edges are designed with outward stamped feet, which are then assembled and fixed with the injection molded frame. Customized foot pressing machines are used for assembling most of the foot pressing machines. Conventional foot pressing machines include an upper mold and a lower mold, where the lower mold is used to fix the metal mesh cover and the injection molded frame, and the upper mold is pushed by a cylinder. The pressure rod at the bottom first pushes the foot to bend horizontally, and then another cylinder presses the pressure rod down to complete the foot bending after retraction.

[0003] However, due to the limitation of assembly method and installation space, the arrangement of the foot in the assembly design of some metal mesh covers and injection molded frames is not externally enclosed but internally embedded. This assembly method means that the tip of the foot is first embedded in the preset hole inside the injection molded frame and then bent outward to achieve fixation (here, outward refers to the direction away from the center of the workpiece). Due to the limitation of the bending direction and the structure of the injection molded frame, the large pressing structure of the conventional foot pressing machine makes it difficult to press the foot from the inside to the outside, so it is impossible to use a conventional foot pressing machine for automatic assembly. For this type of foot, it can only be manually bent horizontally first, and then the foot is bent and pressed by a pressure rod, which has low assembly efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a fast clamping foot external press machine, which can perform fast external press assembly on the clamping foot which is located in the middle of the workpiece and needs external press, thereby improving assembly efficiency.

[0005] The technical solution adopted by the utility model to solve its technical problems is: to provide a rapid foot-clamping external press machine, including an upper die and a lower die, the upper surface of the central part of the lower die is provided with a die cavity matching the shape of a workpiece with a foot, the upper die can be raised and lowered in a height direction by being controlled by a linear reciprocating power device, the lower part of the upper die is provided with a plurality of convex block groups for pressing and bending the foot toward the outside of the workpiece, the convex block groups include a side-sliding push rod and a positive pressure rod arranged side by side, the lower end of the side-sliding push rod is provided with an inclined surface with an inclination greater than the initial inclination of the foot, the upper end of the side-sliding push rod can be slidably installed up and down in the push rod cavity of the upper die, a compression spring is provided in the push rod cavity, the positive pressure rod is provided on the outside of the side-sliding push rod, the lower end of the positive pressure rod and a side close to the side-sliding push rod are provided with an introduction angle, and the lower edge of the positive pressure rod is lower than the lower edge of the side-sliding push rod.

[0006] Preferably, the linear reciprocating power device is a set of pneumatic cylinders, hydraulic cylinders or electric motors.

[0007] Preferably, a top column is provided at the lower part of the upper mold.

[0008] Preferably, the bottom surface of the positive pressure rod is a plane.

[0009] Preferably, a stop block is provided on one side of the open end of the push rod cavity to prevent the side-sliding push rod from falling out.

[0010] Preferably, guide columns are provided at the four corners of the upper die, guide holes are provided at the four corners of the lower die corresponding to the guide columns, and a limit block is provided between the upper die and the lower die.

[0011] Beneficial Effects

[0012] The utility model has high efficiency in assembling the clamping foot. The bending action in two directions can be completed simultaneously to realize the external pressure of the clamping foot through a single lifting of the linear reciprocating power device. The number of linear reciprocating power devices arranged can be reduced, and the device structure is simple. The simple mechanical structure ensures reliable functions. At the same time, the linear reciprocating power device is not limited to a punch press or a cylinder, but can also use an electric device or a hydraulic press. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the mold of a quick clamping foot external press.

[0014] Figure 2 for Figure 1 Enlarged cross-sectional view of the middle mold.

[0015] Among them, 1-upper die; 101-side sliding push rod; 102-positive pressure rod; 103-push rod cavity; 104-compression spring; 105-guide column; 106-stop block; 2-lower die; 201-die cavity; 3-clamping foot; 4-workpiece.

[0016] The same reference numerals in the various drawings represent the same components. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0018] like Figure 1As shown, the utility model provides a fast clamping foot external press machine, including an upper mold 1 and a lower mold 2, wherein the lower mold 2 is used as a fixed mold and is fixed on a machine platform or other fixed foundation, and the upper surface of the center of the lower mold 2 is provided with a detachable mold cavity 201 that matches the shape of the workpiece 4 with the clamping foot 3; the upper mold 1 is used as a movable mold and can be raised and lowered in the height direction by the control of a linear reciprocating power device. The lower part of the upper mold 1 is provided with a structure for externally pressing the clamping foot 3. The other structures of the upper mold 1 and the lower mold 2 are all conventional designs of molds, such as the four corners of the upper mold 1 are provided with guide columns 105, the four corners of the lower mold 2 are provided with guide holes corresponding to the guide columns 105, and the upper mold 1 and the lower mold 2 are provided with a limit block to prevent the upper mold 1 from over-pressing and crushing the product. The conventional design also includes a connection structure between the upper mold 1 and the linear reciprocating power device, a fixed connection structure between the lower mold 2 and the machine platform or desktop, and a top column provided at the lower part of the upper mold 1, which will not be repeated here.

[0019] like Figure 2 As shown, in a specific embodiment, the lower part of the upper die 1 is provided with a plurality of convex block groups for bending the clamping foot 3 toward the outside of the workpiece 4, and the convex block group includes a side sliding push rod 101 and a positive pressure rod 102 arranged side by side, and the lower end of the side sliding push rod 101 is provided with an inclined surface with an inclination greater than the initial inclination of the clamping foot 3, and the upper end of the side sliding push rod 101 can be slidably installed in the push rod cavity 103 of the upper die 1, and a compression spring 104 is provided in the push rod cavity 103, and the positive pressure rod 102 is arranged on the outside of the side sliding push rod 101, and the lower end of the positive pressure rod 102 and the side close to the side sliding push rod 101 are provided with an introduction angle, and the lower edge of the positive pressure rod 102 is lower than the lower edge of the side sliding push rod 101. The elastic force of the compression spring 104 should be greater than the pressure required to deform the clamping foot 3, and the compression stroke of the compression spring 104 should be greater than the compression stroke required by the side sliding push rod 101.

[0020] When the utility model is in use, the workpiece 4 with the clamping foot 3 to be externally pressed is first placed in the mold cavity 201 with the clamping foot 3 facing upward and fixed, and the side sliding push rod 101 and the positive pressure rod 102 at the lower part of the upper mold 1 are determined to correspond to the position of the clamping foot 3, and then the quick clamping foot 3 external press is started, and the upper mold 1 is driven to press down by the linear reciprocating power device; in the initial state, the side sliding push rod 101 maintains an extended state under the elastic force of the compression spring 104, and when contacting the clamping foot 3, the inclined surface of the side sliding push rod 101 first pushes the clamping foot 3 to tilt, and as the upper mold 1 continues to move downward, the side sliding push rod 101 forces the spring to retract after it resists the workpiece 4; and the positive pressure rod 102 continues to move downward, further pressing the clamping foot 3 that has been pushed and tilted downward until it is compacted; after the external pressure of the clamping foot 3 is completed, the upper mold 1 is driven back to the starting point by the linear reciprocating power device to prepare for the external pressure of the clamping foot 3 of the next workpiece 4.

[0021] Generally, the bottom surface of the positive pressure rod 102 is a plane. In other embodiments, the shape of the bottom surface should match the shape of the clamping foot 3 after compaction.

[0022] A stop block 106 is provided on one side of the open end of the push rod cavity 103 to prevent the side sliding push rod 101 from slipping out. In a specific embodiment, the stop block 106 is a bolt, and in other embodiments, the stop block 106 can be designed as a boss, and the size of the stop block 106 can limit the activity space of the planning push rod. In another specific embodiment, the positive pressure rod 102 is a detachable design, and a stop block 106 is provided on one side of the positive pressure rod 102 to prevent the positive pressure rod 102 from moving.

[0023] The linear reciprocating power device is a set of pneumatic cylinders, hydraulic cylinders or electric motors. Generally, a single linear reciprocating power device can provide the power required for bending all the clamping feet 3 at the same time.

[0024] In the present embodiment, the rapid clamping foot external press machine is mainly used for external pressing of the metal mesh cover clamping foot 3, and in actual application it can also be used for the assembly of other workpieces 4 that have clamping feet 3 that require external pressing (the external pressing here refers to bending the clamping foot 3 toward the periphery of the workpiece 4 or away from obstacles on the workpiece 4).

Claims

1. A fast clamping foot external press, comprising an upper die and a lower die, wherein the upper surface of the center portion of the lower die is provided with a die cavity matching the shape of a workpiece with a clamping foot, characterized in that: The upper die can be raised and lowered in height direction by a linear reciprocating power device, and a plurality of convex block groups are provided at the lower part of the upper die for bending the clamping pin toward the outside of the workpiece. The convex block group includes a side-sliding push rod and a positive pressure rod arranged side by side, the lower end of the side-sliding push rod is provided with an inclined surface with an inclination greater than the initial inclination of the clamping foot, the upper end of the side-sliding push rod is slidably installed in the push rod cavity of the upper mold, and a compression spring is provided in the push rod cavity. The positive pressure rod is arranged on the outer side of the side sliding push rod, and a lead-in angle is arranged at the lower end of the positive pressure rod and the side close to the side sliding push rod, and the lower edge of the positive pressure rod is lower than the lower edge of the side sliding push rod.

2. A fast foot clamping external press according to claim 1, characterized in that: The linear reciprocating power device is a set of pneumatic cylinders, hydraulic cylinders or electric motors.

3. A fast foot clamping external press according to claim 1, characterized in that: A top column is arranged at the lower part of the upper mold.

4. A fast foot clamping external press according to claim 1, characterized in that: The bottom surface of the positive pressure rod is a plane.

5. The fast clamping foot external press machine according to claim 1, characterized in that: A stop block is provided on one side of the open end of the push rod cavity to prevent the side-sliding push rod from falling out.

6. A fast foot clamping external press according to claim 1, characterized in that: The four corners of the upper die are provided with guide columns, the four corners of the lower die are provided with guide holes corresponding to the guide columns, and a limit block is provided between the upper die and the lower die.

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