Positioning device for positioning a mold

Abstract

This utility model discloses a positioning device for mold positioning, including a base plate, a first clamping positioning mechanism, a second clamping positioning mechanism, a third clamping positioning mechanism, and a fourth clamping positioning mechanism. A mounting plate is provided on the base plate, and the first, second, third, and fourth clamping positioning mechanisms are respectively positioned at the front, rear, left, and right sides of the mounting plate. A cross-shaped positioning part is provided on the mounting plate, and several suction components are provided on the sides of the cross-shaped positioning part. Thus, the design of the cross-shaped positioning part on the mounting plate allows for precise matching with the positioning structure of the bottom end face of the lower mold, avoiding reference offset. Furthermore, the first, second, third, and fourth clamping positioning mechanisms actively clamp the mold from four directions, eliminating radial clearance of the mold in the plane.

Description

Technical Field

[0001] This utility model relates to the field of mold processing technology, and in particular to a positioning fixture for mold positioning. Background Technology

[0002] In industrial production scenarios such as mold processing and injection molding, the precise positioning of molds (especially lower molds) is a core prerequisite for ensuring the accuracy of subsequent processing and the stability of product quality.

[0003] Traditional mold positioning methods often rely on manual alignment or a single mechanical stop for limiting. This positioning method has the following drawbacks: manual alignment is easily affected by operating experience and visual errors; a single stop can only restrict displacement in some directions and cannot achieve precise fixation of the mold in multiple dimensions in a plane. This can lead to slight displacement of the mold during processing or mold closing, which ultimately affects the dimensional accuracy of the product.

[0004] Secondly, molds that rely solely on simple mechanical stops for positioning are prone to loosening under high-frequency vibration and external impacts (such as processing impacts and clamping forces), increasing the risk of production failures. Furthermore, due to the differences in the external dimensions of molds of different specifications, the stops and limiting structures of traditional positioning devices are mostly designed with fixed dimensions. When changing molds, it is necessary to disassemble, adjust, or even replace the positioning components, which is cumbersome, significantly extends the equipment changeover time, and reduces production efficiency.

[0005] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0006] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a positioning fixture for mold positioning. Through the structural design of a cross positioning part, an adsorption component, a first clamping positioning mechanism, a second clamping positioning mechanism, a third clamping positioning mechanism, and a fourth clamping positioning mechanism, the present invention achieves positioning by adsorption from the top and bottom and clamping from all sides of the mold, thereby improving positioning accuracy and reducing product size deviation.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A positioning device for mold positioning includes a base plate, a first clamping positioning mechanism, a second clamping positioning mechanism, a third clamping positioning mechanism, and a fourth clamping positioning mechanism.

[0009] The base plate is provided with a mounting plate, and the first clamping and positioning mechanism, the second clamping and positioning mechanism, the third clamping and positioning mechanism and the fourth clamping and positioning mechanism are respectively provided in front, rear, left and right sides of the mounting plate; wherein, the mounting plate is provided with a cross positioning part for mounting and positioning with the bottom end face of the lower mold, and several suction members are provided on the sides of the cross positioning part for adsorbing the bottom end face of the lower mold.

[0010] The first, second, third, and fourth clamping and positioning mechanisms each include a clamping member and a driving device. The clamping surface of the clamping member faces the mounting plate, and the output end of the driving device is connected to the clamping member, so that the driving device controls the clamping member to move back and forth toward the mounting plate.

[0011] As a preferred embodiment, the cross-shaped positioning part includes a horizontal positioning part and a vertical positioning part, which are connected to each other, so that a plurality of mounting positions for positioning the adsorption component are formed between the sidewall of the horizontal positioning part and the sidewall of the vertical positioning part.

[0012] As a preferred embodiment, the mounting positions are defined as a first mounting position, a second mounting position, a third mounting position, and a fourth mounting position, respectively. The adsorption components are respectively disposed at the first mounting position, the second mounting position, the third mounting position, and the fourth mounting position. In this way, adsorption force can be applied simultaneously from four key areas at the bottom of the lower mold, avoiding uneven mold stress caused by adsorption force concentrated in a single area. Especially for lower molds with larger dimensions or easily shifted centers of gravity, uniform adsorption force can effectively prevent local warping of the mold, ensure a tight fit between the lower mold and the mounting plate, and further improve positioning stability.

[0013] As a preferred embodiment, during adsorption, the adsorption components deform inward to increase the gap volume between the lower mold and several adsorption components, thereby creating a negative pressure.

[0014] When the adsorption is released, the adsorption components revert outward to reduce the volume of the gap between the lower mold and several adsorption components. During adsorption, the adsorption components deform inward, which can actively fit the tiny uneven structure of the bottom surface of the lower mold, fill the gaps in the contact surface, and greatly improve the sealing performance of the negative pressure. Compared with rigid adsorption components that only rely on planar contact, the deformation and fitting can effectively avoid air leakage caused by uneven contact surfaces, ensure stable negative pressure, enhance adsorption reliability, and prevent the mold from shifting due to adsorption failure under vibration or external force.

[0015] As a preferred embodiment, the clamping member includes a clamping portion and a connecting portion. The clamping portion extends from the end of the connecting portion away from the driving device, and the end of the connecting portion near the driving device is connected to the driving device via a driving shaft.

[0016] As a preferred embodiment, the driving device is an electric motor or a cylinder.

[0017] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly achieves precise matching with the positioning structure of the bottom end face of the lower mold through the design of the cross positioning part on the mounting plate, thus avoiding reference offset.

[0018] Secondly, the first clamping and positioning mechanism, the second clamping and positioning mechanism, the third clamping and positioning mechanism and the fourth clamping and positioning mechanism form an active clamping mechanism for the mold from four directions, eliminating the radial clearance of the mold in the plane;

[0019] The adsorption components adhere to and fix the bottom surface of the mold, thus achieving positioning through vertical adsorption and lateral clamping, improving positioning accuracy and reducing product size deviation.

[0020] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0021] Figure 1 This is a top view of an embodiment of the present utility model;

[0022] Figure 2 This is a cross-sectional view of an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached diagram:

[0024] 1. Base plate 11. Mounting plate

[0025] 12. Cross-shaped positioning part; 13. Adsorption component

[0026] 121. Horizontal positioning part; 122. Vertical positioning part

[0027] 123. First mounting position; 124. Second mounting position

[0028] 125. Third mounting position; 126. Fourth mounting position

[0029] 2. First clamping and positioning mechanism; 3. Second clamping and positioning mechanism

[0030] 4. Third clamping and positioning mechanism; 5. Fourth clamping and positioning mechanism

[0031] 21. Clamping component 22. Drive unit

[0032] 211. Clamping part; 212. Connecting part

[0033] 6. Lower mold. Detailed Implementation

[0034] Please refer to Figures 1 to 2As shown, it illustrates the specific structure of an embodiment of the present invention.

[0035] In the description of this utility model, it should be noted that the directional terms such as "up", "down", "front", "back", "left", and "right" indicate the orientation and positional relationship based on the accompanying drawings or the orientation or positional relationship shown when wearing and using the device normally. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0036] A positioning device for mold positioning includes a base plate 1, a first clamping and positioning mechanism 2, a second clamping and positioning mechanism 3, a third clamping and positioning mechanism 4, and a fourth clamping and positioning mechanism 5.

[0037] The base plate 1 is provided with an installation plate 11, wherein the installation plate 11 is provided with a cross positioning part 12 for mounting and positioning with the bottom end face of the lower mold 6, and a number of adsorption parts 13 are provided on the sides of the cross positioning part 12 for adsorbing the bottom end face of the lower mold 6.

[0038] Preferably, the cross-shaped positioning part 12 includes a horizontal positioning part 121 and a vertical positioning part 122, which are connected to each other, so that a plurality of mounting positions for mounting and positioning the adsorption member 13 are formed between the side wall of the horizontal positioning part 121 and the side wall of the vertical positioning part 122.

[0039] Preferably, the mounting positions are defined as a first mounting position 123, a second mounting position 124, a third mounting position 125, and a fourth mounting position 126, respectively. The adsorption components 13 are respectively disposed at the first mounting position 123, the second mounting position 124, the third mounting position 125, and the fourth mounting position 126. In this way, adsorption force can be applied simultaneously from four key areas at the bottom of the lower mold 6, avoiding uneven mold stress caused by adsorption force concentrated in a single area. Especially for lower molds with larger dimensions or easily shifted centers of gravity, uniform adsorption force can effectively prevent local warping of the mold, ensuring that the lower mold 6 fits tightly with the mounting plate 11, further improving positioning stability. Through the dual positioning structure of the cross positioning part 12 and the adsorption component 13, a dual limit is formed on the lower end of the mold.

[0040] Preferably, during adsorption, the adsorption element 13 deforms inward to expand the gap volume between the lower mold and the adsorption elements 13, forming a negative pressure; during adsorption release, the adsorption element 13 reverts outward to reduce the gap volume between the lower mold and the adsorption elements 13. The inward deformation of the adsorption element 13 during adsorption can actively conform to the tiny uneven structure of the bottom surface of the lower mold, filling the gaps in the contact surface and significantly improving the sealing performance of the negative pressure. Compared with rigid adsorption elements 13 relying only on planar contact, deformation and conformation can effectively avoid air leakage caused by uneven contact surfaces, ensure stable negative pressure, enhance adsorption reliability, and prevent the mold from shifting due to adsorption failure under vibration or external force.

[0041] The first clamping and positioning mechanism 2, the second clamping and positioning mechanism 3, the third clamping and positioning mechanism 4 and the fourth clamping and positioning mechanism 5 are respectively disposed on the front, rear, left and right sides of the mounting plate 11;

[0042] The first clamping and positioning mechanism 2, the second clamping and positioning mechanism 3, the third clamping and positioning mechanism 4 and the fourth clamping and positioning mechanism 5 each include a clamping member 21 and a driving device 22. The clamping surface of the clamping member 21 is arranged facing the mounting plate 11. The output end of the driving device 22 is connected to the clamping member 21, so that the driving device 22 controls the clamping member 21 to move back and forth toward the mounting plate 11.

[0043] Preferably, the clamping member 21 includes a clamping portion 211 and a connecting portion 212. The clamping portion 211 extends from the end of the connecting portion 212 away from the driving device 22, and the end of the connecting portion 212 near the driving device 22 is connected to the driving device 22 via a driving shaft. Preferably, the driving device 22 is a motor or a cylinder.

[0044] The key design feature of this utility model is that the cross-shaped positioning part on the mounting plate can be directly and accurately matched with the positioning structure on the bottom end face of the lower mold, thus avoiding reference offset.

[0045] Secondly, the first clamping and positioning mechanism, the second clamping and positioning mechanism, the third clamping and positioning mechanism and the fourth clamping and positioning mechanism form an active clamping mechanism for the mold from four directions, eliminating the radial clearance of the mold in the plane;

[0046] The adsorption components adhere to and fix the bottom surface of the mold, thus achieving positioning through vertical adsorption and lateral clamping, improving positioning accuracy and reducing product size deviation.

[0047] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A positioning device for mold positioning, characterized in that: It includes a base plate, a first clamping and positioning mechanism, a second clamping and positioning mechanism, a third clamping and positioning mechanism, and a fourth clamping and positioning mechanism; The base plate is provided with a mounting plate, and the first clamping and positioning mechanism, the second clamping and positioning mechanism, the third clamping and positioning mechanism and the fourth clamping and positioning mechanism are respectively provided in front, rear, left and right sides of the mounting plate; wherein, the mounting plate is provided with a cross positioning part for mounting and positioning with the bottom end face of the lower mold, and several suction members are provided on the sides of the cross positioning part for adsorbing the bottom end face of the lower mold. The first, second, third, and fourth clamping and positioning mechanisms each include a clamping member and a driving device. The clamping surface of the clamping member faces the mounting plate, and the output end of the driving device is connected to the clamping member, so that the driving device controls the clamping member to move back and forth toward the mounting plate.

2. The positioning device for mold positioning according to claim 1, characterized in that: The cross-shaped positioning part includes a horizontal positioning part and a vertical positioning part, which are connected to each other, so that a number of mounting positions for the installation and positioning of the adsorption component are formed between the side wall of the horizontal positioning part and the side wall of the vertical positioning part.

3. The positioning device for mold positioning according to claim 2, characterized in that: The mounting positions are defined as a first mounting position, a second mounting position, a third mounting position, and a fourth mounting position, and the adsorption elements are respectively disposed at the first mounting position, the second mounting position, the third mounting position, and the fourth mounting position.

4. The positioning device for mold positioning according to claim 3, characterized in that: During adsorption, the adsorption components deform inward to increase the gap volume between the lower mold and several adsorption components, thereby creating negative pressure. When the adsorption is released, the adsorption components reposition outwards to reduce the volume of the gap between the lower mold and several adsorption components.

5. The positioning device for mold positioning according to claim 1, characterized in that: The clamping member includes a clamping part and a connecting part. The clamping part extends from the end of the connecting part away from the driving device, and the end of the connecting part near the driving device is connected to the driving device via a driving shaft.

6. The positioning device for mold positioning according to claim 1, characterized in that: The driving device is a motor or a cylinder.

Images