Rapid clamping foot internal pressing machine

Abstract

The utility model relates to a rapid clamping foot internal 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 a side sliding block capable of stretching out and drawing back towards the surface of the tail end of the clamping foot is arranged on the periphery of the lower die. The upper die is controlled by a linear reciprocating power device to ascend and descend in the height direction, and the lower portion of the upper die is provided with a push rod capable of controlling the side sliding block to stretch out and draw back horizontally and a pressing rod capable of downwards bending the clamping foot which is pushed by the side sliding block to be primarily bent. The clamping pin assembling efficiency is high, simple and reliable functions are guaranteed through a pure mechanical structure, bending actions in two directions can be completed at the same time through single-time lifting of the linear reciprocating power devices, and the number of the arranged linear reciprocating power devices can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamping foot assembly equipment, in particular to a fast clamping foot internal 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 molding frame through the feet. A customized foot pressing machine is used to assemble these feet. 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 molding 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. However, some large mesh cover feet that need to be arranged around the injection molding frame are numerous and in different directions. When processing such mesh cover feet, a corresponding number of cylinders need to be arranged according to the direction of the feet, and the production efficiency is very low. In addition, when the cylinders are not synchronized, the feet or frame may be damaged, affecting the qualified product rate. And the use of cylinders also means that an air source must be used. In this case, if the air source is unstable, such as when the air pressure is reduced, it is more likely to fail. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a fast clamping foot internal pressing machine, which can quickly press clamping feet in different directions and in large numbers.

[0004] The utility model adopts the technical scheme to solve its technical problems: provide a fast clamping foot internal press machine, comprising an upper mold and a lower mold, the upper surface of the central part of the lower mold is provided with a mold cavity matching the shape of the workpiece with the clamping foot, the outer periphery of the lower mold is provided with a side slider which can be telescoped toward the end surface of the clamping foot, the upper mold is controlled to be lifted and lowered in the height direction by a linear reciprocating power device, the lower part of the upper mold is provided with a push rod which can control the horizontal telescope of the side slider and a pressure rod which can bend the clamping foot downward after being pushed by the side slider for initial folding. The bottom of the side slider can be slidably arranged on the upper surface of the lower mold, the end of the side slider away from the clamping foot is provided with a boss, the lower part of the end of the side slider close to the clamping foot is abutted with a compression spring, and the other end of the compression spring is abutted with the outer facade of the mold cavity, the lower part of the push rod is provided with an extension section which extends obliquely toward the workpiece side, and the end of the extension section is provided with a roller, the roller is tangent to the boss, and the lower edge of the roller is lower than the lower edge of the pressure rod.

[0005] Preferably, the linear reciprocating power device is a set of pneumatic cylinders, hydraulic cylinders or electric motors.

[0006] Preferably, a top column is provided at the lower part of the upper mold.

[0007] Preferably, a detachable push rod is provided on the top of the side slider, and when the side slider is in the withdrawn state, the end of the push rod is flush with the inner wall of the mold cavity; when the side slider is in the pushed-in state, the end of the push rod can push and fold the clamping foot from the horizontal direction.

[0008] Preferably, the boss is in the shape of an isosceles triangle or a semicircle.

[0009] Beneficial Effects

[0010] The utility model has high efficiency in assembling the clamping foot. The bending action in two directions can be completed simultaneously to realize the internal 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

[0011] Figure 1 It is a three-dimensional diagram of the mold of a fast clamping foot internal press machine.

[0012] Figure 2 for Figure 1 Enlarged cross-sectional view of the middle mold.

[0013] Among them, 1-upper mold; 101-push rod; 102-roller; 103-pressure rod; 104-top column; 105-guide column; 2-lower mold; 201-mold cavity; 202-side slider; 203-top rod; 204-compression spring; 205-boss; 3-clamping foot; 4-workpiece.

[0014] The same reference numerals in the various drawings represent the same components. DETAILED DESCRIPTION

[0015] 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.

[0016] like Figure 1As shown, the utility model provides a fast foot clamping internal press machine, including an upper die 1 and a lower die 2, wherein the lower die 2 is used as a fixed die, fixed on a machine platform or other fixed foundation, and the upper surface of the center of the lower die 2 is provided with a detachable die cavity 201 matching the shape of the workpiece 4 with the clamping foot 3; the upper die 1 is used as a movable die and can be raised and lowered in the height direction by a linear reciprocating power device (not shown in the figure). The lower part of the upper die 1 is provided with a structure for internally pressing the clamping foot 3. The other structures of the upper die 1 and the lower die 2 are all conventional designs of the mold, such as the four corners of the upper die are provided with guide columns 105, the four corners of the lower die are provided with guide holes corresponding to the guide columns 105, and the upper die 1 and the lower die 2 are provided with a limit block to prevent the upper die from over-pressing and crushing the product. The conventional design also includes a connection structure between the upper die 1 and the linear reciprocating power device, a fixed connection structure between the lower die 2 and the machine platform or desktop, and a top column 104 provided at the lower part of the upper die 1, which will not be repeated here.

[0017] In a specific embodiment, Figure 2 As shown, the outer periphery of the lower mold 2 is provided with a side slider 202 which can be extended and retracted toward the end surface of the clamping foot 3, the lower part of the upper mold 1 is provided with a push rod 101 which can control the horizontal extension and retraction of the side slider 202 and a pressure rod 103 which can bend the clamping foot 3 downward after being initially folded by the side slider 202, the bottom of the side slider 202 is slidably arranged on the upper surface of the lower mold 2, the end of the side slider 202 away from the clamping foot 3 is provided with a boss 205, the lower part of the end of the side slider 202 close to the clamping foot 3 is abutted against a compression spring 204, and the other end of the compression spring 204 is abutted against the outer facade of the mold cavity 201, the lower part of the push rod 101 has an extension section which extends obliquely toward the workpiece 4, the end of the extension section is provided with a roller 102, the roller 102 is tangent to the boss 205, and the lower edge of the roller 102 is lower than the lower edge of the pressure rod 103.

[0018] The shape of the boss 205 is an isosceles triangle or a semicircle, and the straight-line distance between the end of the extension section and the push rod 101 is greater than the height on the base of the isosceles triangle or the radius of the semicircle. When the roller 102 does not contact or just contacts the upper edge of the boss 205, the side slider 202 is in a withdrawn state; as the upper mold 1 drives the roller 102 to continue to move vertically downward, the boss 205 is pushed by the roller 102 to move toward the clamping foot 3, and when the roller 102 moves to the top of the boss 205, the side slider 202 is in a pushed-in state, and the end of the side slider 202 in the fully pushed-in state can push the clamping foot 3 to a horizontal state; as the roller 102 continues to move downward, after exceeding the top of the boss 205, the side slider 202 is gradually retracted under the elastic force of the compression spring 204 to avoid the pressure rod 103 pressed down at the same time as the push rod 101, and when the upper mold 1 is pressed to the lowermost end, the pressure rod 103 presses the clamping foot 3 against the workpiece 4 to complete the processing of the clamping foot 3.

[0019] A detachable push rod 203 is provided on the top of the side slider 202, and push rods 203 of different lengths can be replaced according to the distance between the clamping foot 3 on different workpieces 4 and the side slider 202, so as to ensure that when the side slider 202 is in the withdrawn state, the end of the push rod 203 is flush with the inner wall of the mold cavity 201; when the side slider 202 is in the pushed-in state, the end of the push rod 203 can push and fold the clamping foot 3 from the horizontal direction.

[0020] The linear reciprocating power device is a pneumatic cylinder, a hydraulic cylinder or an electric motor. Generally, a single linear reciprocating power device can provide the power required for bending all the clamping feet 3 at the same time.

[0021] In this embodiment, the rapid clamping foot internal press machine is mainly used for the internal pressure pressing of the metal mesh cover clamping feet, but in actual applications it can also be used for the assembly of other workpieces with clamping feet that require internal pressure (the internal pressure here refers to bending the clamping feet toward the center of the workpiece).

Claims

1. A fast foot clamping internal 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 foot clamp, characterized in that: The outer periphery of the lower mold is provided with a side slider that can be extended and retracted toward the end surface of the clamping foot. The upper mold can be raised and lowered in the height direction by a linear reciprocating power device. The lower part of the upper mold is provided with a push rod that can control the horizontal extension and retraction of the side slider and a pressure rod that can bend the clamping foot downward after being pushed by the side slider after the initial folding. The bottom of the side slider is slidably arranged on the upper surface of the lower mold, a boss is provided at the end of the side slider away from the clamping foot, the lower part of the end of the side slider close to the clamping foot abuts against a compression spring, and the other end of the compression spring abuts against the outer facade of the mold cavity, the lower part of the push rod has an extension section extending obliquely toward the workpiece side, a roller is provided at the end of the extension section, the roller is tangent to the boss, and the lower edge of the roller is lower than the lower edge of the push rod.

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

4. The fast foot clamping press according to claim 1, characterized in that: A detachable ejector rod is provided on the top of the side slider, and when the side slider is in the withdrawn state, the end of the ejector rod is flush with the inner wall of the mold cavity; When the side sliding block is in a pushed-in state, the end of the push rod can push and fold the clamping foot from a horizontal direction.

5. The fast foot clamping press according to claim 1, characterized in that: The shape of the boss is an isosceles triangle or a semicircle.

Images