Positioning device for mold base of push-pull mold

Abstract

The utility model relates to the technical field of mold processing, in particular to a positioning device for a mold blank of a push-pull mold, which comprises a positioning table, a positioning component and two groups of moving components, a mounting groove is formed in the lower end surface of the positioning table, the positioning component comprises a telescopic part and positioning units positioned in four directions, and the two groups of moving components are arranged in the mounting groove. The telescopic part is installed in the installation groove with the output end facing downwards, a positioning block is arranged at the top end of each positioning unit, the four positioning units move synchronously through stretching and retracting of the telescopic part so that the four positioning blocks can get away from or get close to each other, and the moving assembly is used for making every two opposite positioning blocks get close to or get away from each other. The positioning assembly composed of the telescopic piece and the four-direction positioning units is arranged, when a die blank is positioned, the positioning blocks at the top ends of the four-direction positioning units move synchronously, the die blank can be positioned and fixed by moving the same distance in the four directions at the same time, large deviation is avoided, and the subsequent machining precision is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of mold processing, in particular to a positioning device for a push-pull mold base. Background Art

[0002] Molds are various molds and tools used in industrial production to obtain the desired products through methods such as injection molding, blow molding, extrusion, die-casting or forging, smelting, and stamping. Among them, push-pull molds are a special type of mold, mainly used in various processing technologies such as plastic injection molding, metal stamping, and vulcanization molding. The characteristic of this mold is its unique push-pull action. Through the special design of the internal structure of the mold, additional dynamic pressure can be applied to the material during the injection, stamping or vulcanization process to improve the quality and production efficiency of the product. The mold base is the basic structural part that is first processed in the mold manufacturing process. During the processing of the mold base, a positioning device is required to be used to position and fix it.

[0003] At present, two telescopic parts (cylinders or hydraulic rods) are generally used to drive the two positioning clamps on both sides to move relative to each other to clamp and position the mold base. However, in actual use, the elongation of the two telescopic parts is difficult to maintain consistency, resulting in asymmetrical positioning on both sides. Secondly, the positioning of the other two sides of the mold base is not good, which easily causes a large offset on the other two sides, thereby affecting the accuracy of subsequent processing. For this reason, we propose a positioning device for push-pull mold base. Utility Model Content

[0004] To solve the above technical problems, an embodiment of the present application provides a positioning device for a push-pull mold base, comprising a positioning platform, a mounting groove being formed on the lower end surface of the positioning platform, and further comprising:

[0005] A positioning assembly comprising a telescopic member and positioning units located in four directions. The output end of the telescopic member is installed in the installation slot with its output end facing downward. A positioning block is provided at the top of each positioning unit. The telescopic member is extended and retracted to achieve synchronous movement of the four positioning units, so that the four positioning blocks move away from or closer to each other.

[0006] There are two groups of moving components, each group of moving components corresponds to two opposite positioning units, and the moving components are used to achieve the two opposite positioning blocks to move closer to or farther away from each other.

[0007] In some embodiments, each of the positioning units includes a connecting strip and a first hinged seat, the first end of the connecting strip is fixedly mounted on the output end of the telescopic member through a mounting block, the connecting block is hinged on the first hinged seat, the outer end of the connecting block is fixed with a second hinged seat, and a hinged strip is hinged between the second hinged seat and the second end of the connecting strip.

[0008] In some embodiments, a convex strip is fixed to the upper end surface of the connecting block, and the positioning block is detachably arranged on the top end of the convex strip.

[0009] In some embodiments, a threaded groove is formed on the upper end surface of the convex strip, and a threaded rod is connected to the bottom end of the positioning block, and the threaded rod is screwed into the threaded groove.

[0010] In some embodiments, each group of the moving components includes a servo motor and a double-threaded screw, one end of the double-threaded screw is installed on the output end of the servo motor, a through slot is provided on the hinge bar, the double-threaded screw passes through the positioning platform and the through slot, the threads on both sides of the double-threaded screw are in opposite directions, and screw nut seats are installed at both ends of the outside of the double-threaded screw, and a bracket is fixed between the top of each screw nut seat and the corresponding first hinge seat.

[0011] In some embodiments, support bars are provided on the outside of the servo motor and on the end of the double-threaded lead screw away from the servo motor.

[0012] In some embodiments, support rods are symmetrically provided on the lower end surface of the positioning platform near the corners, and pads are fixed to the bottom ends of the support rods.

[0013] The utility model has at least the following beneficial effects:

[0014] 1. A positioning assembly consisting of a telescopic part and four-directional positioning units is set. When positioning the mold blank, the positioning blocks at the top of the four-directional positioning units move synchronously, and the mold blank can be positioned and fixed by the same distance from four directions at the same time, avoiding large offsets and ensuring the accuracy of subsequent processing. When the positioning block in a certain direction contacts the mold blank first, it can push the mold blank to move, so as to ensure that the mold blank is placed in the center of the positioning unit, thereby ensuring accurate positioning.

[0015] 2. Two sets of moving components are set up. The moving components are used to realize the closeness or distance between the two relative positioning blocks, so that larger-sized mold blanks can be positioned and fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 Another structural diagram;

[0018] Figure 3 This is a schematic structural diagram of the positioning assembly of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the mobile component of the utility model;

[0020] Figure 5 This is a structural diagram of the positioning platform of the utility model;

[0021] Figure 6 This is a structural diagram of the utility model in which the positioning block and the convex strip are separated.

[0022] In the figure: 1. Positioning platform;

[0023] 2. Positioning assembly; 21. Telescopic member; 22. Positioning unit; 221. Connecting strip; 222. Articulated strip; 223. First hinge seat; 224. Connecting block; 225. Second hinge seat; 226. Raised strip; 227. Through slot;

[0024] 3. Moving assembly; 31. Servo motor; 32. Double-threaded screw; 33. Screw nut seat; 34. Bracket;

[0025] 4. Support rod; 5. Support bar; 6. Positioning block; 7. Mounting slot; 8. Threaded slot; 9. Threaded rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example 1

[0028] See also Figure 1-Figure 5The utility model provides a technical solution: a positioning device for a push-pull mold base, comprising a positioning platform 1, a mounting groove 7 is provided on the lower end surface of the positioning platform 1, and the upper end surface of the positioning platform 1 is used to place the mold base to be positioned. Support rods 4 are symmetrically provided near the corners of the lower end surface of the positioning platform 1, and pads are fixed to the bottom ends of the support rods 4. If the positioning device is installed on a mold base processing device, the support rods 4 may not be required, and the positioning platform 1 may be embedded in the table of the mold base processing device. The positioning device also includes a positioning component 2 and two sets of moving components 3. The positioning component 2 includes a telescopic part 21 and positioning units 22 located in four directions. The telescopic part 21 may be an electric telescopic rod or a cylinder or a hydraulic cylinder. The telescopic part The output end 21 is installed downward in the installation groove 7, and a positioning block 6 is provided at the top of each positioning unit 22. The positioning block 6 is used to press against and position the mold blank to be processed. The four positioning units 22 are moved synchronously by the extension and contraction of the telescopic member 21, so that the four positioning blocks 6 are moved away from or close to each other. When the telescopic member 21 is extended downward, the four positioning units 22 drive the four positioning blocks 6 to turn outward to achieve separation. When the telescopic member 21 is retracted upward, the four positioning units 22 drive the four positioning blocks 6 to approach each other. Each group of moving components 3 corresponds to two relative positioning units 22, and the moving components 3 are used to achieve the two relative positioning blocks 6 to approach or move away from each other, so as to achieve positioning and fixation for larger-sized mold blanks.

[0029] Among them, in the specific implementation of the present utility model, refer to Figure 3 and Figure 4 As shown, each positioning unit 22 includes a connecting strip 221 and a first hinge seat 223. The first end of the connecting strip 221 is fixedly mounted on the output end of the telescopic member 21 through a mounting block. A connecting block 224 is hinged on the first hinge seat 223. A second hinge seat 225 is fixed to the outer end of the connecting block 224. A hinge strip 222 is hinged between the second hinge seat 225 and the second end of the connecting strip 221.

[0030] Through the above, during specific use, the initial state is that the telescopic part 21 extends downward, and the four positioning blocks 6 are in an outward-turned state. After the mold blank to be processed is placed on the upper end surface of the positioning platform 1, the telescopic part 21 can be retracted, and the connecting bar 221 can be used to drive the hinged bar 222 to move upward, so as to drive the hinged connecting block 224 to turn inward, so as to use the four positioning blocks 6 to clamp and position the mold blank to be processed from four directions.

[0031] In the specific implementation of the present invention, see Figure 3 and Figure 4As shown, each group of moving components 3 includes a servo motor 31 and a double-threaded screw 32. The servo motor 31 is a motor with a forward and reverse shaft. One end of the double-threaded screw 32 is installed at the output end of the servo motor 31. A through slot 227 is provided on the hinge bar 222. The double-threaded screw 32 passes through the positioning platform 1 and the through slot 227. The threads on both sides of the double-threaded screw 32 are in opposite directions, and screw nut seats 33 are installed at both ends of the outside of the double-threaded screw 32. A bracket 34 is fixed between the top of each screw nut seat 33 and the corresponding first hinge seat 223.

[0032] The outside of the servo motor 31 and the end of the double-threaded screw 32 away from the servo motor 31 are both provided with support bars 5. The support bar 5 can also be replaced with a tower structure to ensure the stable installation of the servo motor 31 and the double-threaded screw 32. Among them, the support bar 5 on which the end of the double-threaded screw 32 is installed is provided with a bearing seat. The end of the double-threaded screw 32 and the support bar 5 are installed through the bearing seat, which can ensure the subsequent stable rotation of the double-threaded screw 32.

[0033] As mentioned above, the servo motors 31 and double-threaded screws 32 of the two sets of moving components 3 are at different heights to avoid obstruction between each other, and when in use, the double-threaded screw 32 is driven to rotate by the output end of the servo motor 31, which can drive the two relative screw nut seats 33 to move away from or closer to each other, so that the two relative hinge bars 222 can be flipped at a certain angle to adjust for larger-sized mold blanks.

[0034] The outward expansion of the four positioning blocks 6 can be adjusted, and the outward expansion of two relative positioning blocks 6 can also be adjusted as needed.

[0035] Example 2

[0036] See Figure 6 As shown, this embodiment is extended on the basis of embodiment 1, and the above-mentioned positioning block 6 is detachably provided at the top end of the positioning unit 22, wherein a protrusion 226 is fixed on the upper end face of the connecting block 224, and the positioning block 6 is detachably installed at the top end of the protrusion 226. The detachable positioning block 6 is convenient for replacement, wherein the positioning block 6 can be set in a variety of widths and heights to adapt to different specifications of mold blanks for positioning and fixing, and the pressing positioning surface of each positioning block 6 can be set with a different curvature to adapt to the positioning and fixing of the mold blank with a curvature on the outer wall.

[0037] Specifically, a thread groove 8 is formed on the upper end surface of the protruding strip 226 , and a threaded rod 9 is connected to the bottom end of the positioning block 6 , and the threaded rod 9 is screwed into the thread groove 8 .

[0038] Through the above, when installing the positioning block 6, the threaded rod 9 is screwed into the threaded groove 8, and both installation and subsequent removal are quick and convenient.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning device for a push-pull mold base, comprising a positioning platform (1), wherein a mounting groove (7) is provided on the lower end surface of the positioning platform (1), characterized in that: Also included are: A positioning assembly (2), the positioning assembly (2) comprising a telescopic member (21) and positioning units (22) located in four directions, the output end of the telescopic member (21) being installed in a mounting groove (7) with its output end facing downward, a positioning block (6) being provided at the top of each positioning unit (22), and the four positioning units (22) being moved synchronously by the telescopic movement of the telescopic member (21), so that the four positioning blocks (6) are moved away from or closer to each other; Two groups of moving components (3), each group of the moving components (3) corresponds to two opposite positioning units (22), and the moving components (3) are used to achieve the approach or distance between the two opposite positioning blocks (6).

2. The positioning device for the push-pull mold base according to claim 1, characterized in that: Each positioning unit (22) comprises a connecting bar (221) and a first hinge seat (223); the first end of the connecting bar (221) is fixedly mounted on the output end of the telescopic member (21) via a mounting block; a connecting block (224) is hingedly mounted on the first hinge seat (223); a second hinge seat (225) is fixedly mounted on the outer end of the connecting block (224); and a hinge bar (222) is hingedly mounted between the second hinge seat (225) and the second end of the connecting bar (221).

3. The positioning device for the push-pull mold base according to claim 2, characterized in that: A convex strip (226) is fixed to the upper end surface of the connecting block (224), and the positioning block (6) is detachably arranged on the top end of the convex strip (226).

4. The positioning device for a push-pull mold base according to claim 3, characterized in that: The upper end surface of the convex strip (226) is provided with a threaded groove (8), and the bottom end of the positioning block (6) is connected to a threaded rod (9), and the threaded rod (9) is screwed into the threaded groove (8).

5. The positioning device for the push-pull mold base according to claim 2, characterized in that: Each group of the moving components (3) includes a servo motor (31) and a double-threaded screw (32), one end of the double-threaded screw (32) is installed on the output end of the servo motor (31), a through slot (227) is provided on the hinge bar (222), the double-threaded screw (32) passes through the positioning platform (1) and the through slot (227), the threads on both sides of the double-threaded screw (32) are in opposite directions, and screw nut seats (33) are installed at both ends of the outside of the double-threaded screw (32), and a bracket (34) is fixed between the top of each screw nut seat (33) and the corresponding first hinge seat (223).

6. The positioning device for the push-pull mold base according to claim 5, characterized in that: The outside of the servo motor (31) and one end of the double-threaded screw rod (32) away from the servo motor (31) are both provided with a support bar (5).

7. The positioning device for a push-pull mold base according to claim 1, characterized in that: The lower end surface of the positioning platform (1) is symmetrically provided with support rods (4) near the corners, and the bottom ends of the support rods (4) are fixed with pads.

Images