Turnover jig capable of rotating forwards and backwards and achieving double-floating positioning and implementation method of turnover jig

Abstract

The turnover jig comprises a jig base, two positioning pin sleeves are arranged on the jig base, a jig body is arranged above the jig base, the jig body comprises a jig seat, a positioning cavity is formed in the center of the jig seat, sliding grooves are formed in the four side edges of the jig seat, and the positioning pin sleeves are arranged in the sliding grooves. A first positioning piece, a second positioning piece, a third positioning piece and a fourth positioning piece are sequentially arranged in the four sliding grooves. The invention further discloses an implementation method of the turnover jig capable of rotating forwards and backwards and achieving double-floating positioning. A product is positioned through cooperation of the first positioning piece, the second positioning piece, the third positioning piece and the fourth positioning piece, after one end of the product is assembled, the jig body can be turned over by 180 degrees, the other end of the product continues to be assembled, secondary positioning of the product is not needed, and the turnover requirement for higher precision is met.

Description

Technical Field

[0001] The present invention belongs to the technical field of turnover fixtures, and in particular relates to a turnover fixture capable of forward and reverse rotation and double floating positioning, and a method for realizing the same. Background Art

[0002] In 3C automation equipment, since the products are relatively small, sophisticated, and have many production processes, there will be a large gap between each workstation. Directly positioning the product itself is likely to damage the product. Therefore, turnover fixtures are often used. The product is placed in a turnover fixture, and the fixture is positioned by a mechanism to ensure the consistency of each product.

[0003] Conventional turnover jigs can only position and assemble products from the front. For products with upper and lower symmetrical structures, the jig body needs to be flipped 180° after completing the front assembly before the product can be assembled. In the field of high-precision assembly, the product cannot be removed from the jig for re-positioning.

[0004] Therefore, a turnover fixture that can flip the product over and position it is needed to achieve higher precision turnover requirements. Summary of the Invention

[0005] The purpose of the present invention is to provide a turnover fixture that can rotate forward and backward and has double floating positioning to solve the problems raised in the above background technology. The present invention provides a turnover fixture that can rotate forward and backward and has double floating positioning, which has the characteristic of being able to flip the fixture 180°.

[0006] Another object of the present invention is to provide a method for realizing a turnover fixture that can rotate forward and backward and has double floating positioning.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a turnover jig that can rotate forward and backward and has double floating positioning, comprising a jig base, two positioning pin sleeves are provided on the jig base, a jig body is provided above the jig base, the jig body comprises a jig seat, a positioning cavity is provided at the center of the jig seat, slide grooves are provided on the four sides of the jig seat, and the interiors of the four slide grooves are provided with a first positioning member, a second positioning member, a third positioning member and a fourth positioning member in sequence, a positioning cover plate is connected to the opening of the slide groove, and positioning springs are provided between the first positioning member, the second positioning member, the third positioning member and the fourth positioning member and the positioning cover plate.

[0008] In order to achieve positioning between the jig body and the jig base, two diagonally distributed positioning pins are further connected to the top of the jig base, and positioning pin holes corresponding to the positioning pins are provided on the jig seat.

[0009] In order to reduce the precision required for alignment and facilitate rapid positioning between the jig body and the jig base, one positioning pin hole is a round hole structure and the other positioning pin hole is a waist hole structure.

[0010] In order to achieve positioning on the product, the first positioning member, the second positioning member, the third positioning member and the fourth positioning member further include a sliding block, which is connected to two first ejector pins, and the sliding blocks of the third positioning member and the fourth positioning member are also connected to a second ejector pin.

[0011] In order to avoid damage to the product, further, the first thimble and the sliding block on the first positioning member and the second positioning member are limited by the machine screw, and a thimble spring is provided between the first thimble and the second thimble on the third positioning member and the fourth positioning member and the machine screw.

[0012] In order to convert the vertical movement of the fixture opening mechanism into the horizontal movement of the sliding block, further, extension blocks are provided on both side surfaces of the sliding block, and guide slopes are provided on the end surfaces of the extension blocks.

[0013] In order to provide space for the jig opening mechanism, a through slot corresponding to the extension block is further provided on the jig seat.

[0014] To meet the product's 0.58mm lift requirement during assembly, a central top block corresponding to the positioning cavity slides on the fixture base. Side top blocks are located on either side of the central top block, each equipped with a top block spring. A corresponding base cover with a through hole is attached to the bottom surface of the fixture base.

[0015] Furthermore, in the present invention, a method for realizing a turnover fixture capable of forward and reverse rotation and dual floating positioning comprises the following steps:

[0016] (1) The fixture opening mechanism cooperates with the guide slope on the sliding block to push the first positioning member, the second positioning member, the third positioning member, and the fourth positioning member backward, so that the first ejector pin and the second ejector pin retract backward;

[0017] (2) Place the product into the positioning cavity, and the fixture opening mechanism retracts upward. The first positioning member, the second positioning member, the third positioning member, and the fourth positioning member, under the action of the restoring force of the positioning spring, drive the first ejector pin and the second ejector pin to extend, thereby positioning the product;

[0018] (3) Assemble the product;

[0019] (4) After assembly is completed, turn the fixture body 180° and continue assembly.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention positions the product through the cooperation of the first positioning member, the second positioning member, the third positioning member and the fourth positioning member. After the assembly of one end of the product is completed, the fixture body can be turned 180° to continue assembly at the other end. There is no need to perform secondary positioning of the product, ensuring higher precision turnover requirements.

[0022] 2. The first ejector pins on the first and second positioning members of the present invention are fixed to provide a positioning reference to ensure the accuracy of positioning. The first and second ejector pins on the third and fourth positioning members are provided with a force by the restoring force of the ejector spring, and then cooperate with the positioning springs on the sliding blocks of the third and fourth positioning members to realize a double floating positioning structure to avoid damage to the product.

[0023] 3. In the present invention, one positioning pin hole is a round hole structure, and the other positioning pin hole is a waist hole structure, which reduces the precision required for alignment and facilitates rapid positioning between the fixture body and the fixture base.

[0024] 4. When assembling the product, the lifting and compensating jacking mechanism lifts the center top block and the side top block upwards, meeting the requirement of lifting the product by 0.58mm during assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention.

[0026] Figure 2 It is a structural schematic diagram of the fixture base of the present invention.

[0027] Figure 3 It is a schematic cross-sectional structural diagram of the fixture base of the present invention.

[0028] Figure 4 It is a schematic diagram of the structural explosion of the fixture body of the present invention.

[0029] Figure 5 It is a structural schematic diagram of the fixture seat of the present invention.

[0030] Figure 6 Schematic diagram of the structure of the second positioning member of the present invention.

[0031] Figure 7 It is a schematic cross-sectional structural diagram of the second positioning member of the present invention.

[0032] Figure 8 Schematic diagram of the structure of the third positioning member of the present invention.

[0033] Figure 9 It is a schematic cross-sectional structural diagram of the third positioning member of the present invention.

[0034] In the figure: 1. fixture base; 101. positioning pin sleeve; 102. positioning pin; 103. center ejector block; 104. side ejector block; 105. ejector block spring; 106. base cover; 107. through hole; 2. fixture body; 3. fixture seat; 31. positioning cavity; 32. positioning pin hole; 33. through slot; 34. slide slot; 4. first positioning member; 5. second positioning member; 6. third positioning member; 7. fourth positioning member; 8. positioning spring; 9. positioning cover; 10. sliding block; 11. guide ramp; 12. first ejector pin; 13. machine screw; 14. second ejector pin; 15. ejector pin spring. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0036] Example 1

[0037] See also Figures 1-9 The present invention provides the following technical solutions: a turnover jig that can rotate forward and backward and has double floating positioning, including a jig base 1, two positioning pin sleeves 101 are provided on the jig base 1, which are used to position the jig base 1, a jig body 2 is provided above the jig base 1, the jig body 2 includes a jig seat 3, a positioning cavity 31 is provided at the center of the jig seat 3, and slide grooves 34 are provided on the four sides of the jig seat 3. The interior of the four slide grooves 34 is sequentially provided with a first positioning member 4, a second positioning member 5, a third positioning member 6 and a fourth positioning member 7, a positioning cover plate 9 is connected to the opening of the slide groove 34, and the first positioning member 4, the second positioning member 5, the third positioning member 6 and the fourth positioning member 7 are sequentially provided. A positioning spring 8 is provided between the positioning member 4, the second positioning member 5, the third positioning member 6 and the fourth positioning member 7 and the positioning cover plate 9. After the jig opening mechanism (not a necessary technical feature of this application, not shown in the accompanying drawings) retracts, the restoring force of the positioning spring 8 is used to extend the first positioning member 4, the second positioning member 5, the third positioning member 6 and the fourth positioning member 7. The elastic force of the positioning spring 8 on the side of the first positioning member 4 and the second positioning member 5 is greater than the elastic force of the positioning spring 8 on the side of the third positioning member 6 and the fourth positioning member 7, so that the first positioning member 4 and the second positioning member 5 are used as positioning references to ensure the accuracy of positioning.

[0038] By adopting the above technical solution, the present invention positions the product through the cooperation of the first positioning member 4, the second positioning member 5, the third positioning member 6 and the fourth positioning member 7. After the assembly of one end of the product is completed, the fixture body 2 can be flipped 180° and the other end can be assembled. There is no need to perform secondary positioning of the product, thereby ensuring higher precision turnover requirements.

[0039] Specifically, two diagonally distributed positioning pins 102 are connected to the top of the fixture base 1 , and the fixture seat 3 is provided with positioning pin holes 32 corresponding to the positioning pins 102 .

[0040] By adopting the above technical solution, the positioning between the fixture body 2 and the fixture base 1 is achieved through the cooperation between the positioning pin 102 and the positioning pin hole 32.

[0041] Specifically, the first positioning member 4 , the second positioning member 5 , the third positioning member 6 and the fourth positioning member 7 all include a sliding block 10 , to which two first ejector pins 12 are connected. The sliding blocks 10 of the third positioning member 6 and the fourth positioning member 7 are also connected to a second ejector pin 14 .

[0042] By adopting the above technical solution, positioning is achieved by the first ejector pin 12 and the second ejector pin 14 acting on the product.

[0043] Specifically, the first thimble 12 on the first positioning member 4 and the second positioning member 5 and the sliding block 10 are limited by the machine screw 13, the machine screw 13 is threadedly connected to the sliding block 10, and a thimble spring 15 is provided between the first thimble 12 and the second thimble 14 on the third positioning member 6 and the fourth positioning member 7 and the machine screw 13.

[0044] By adopting the above technical solution, the first ejector pin 12 on the first positioning member 4 and the second positioning member 5 of the present invention is fixed in a fixed manner to provide a positioning reference to ensure the accuracy of positioning. The first ejector pin 12 and the second ejector pin 14 on the third positioning member 6 and the fourth positioning member 7 are provided with a force by the restoring force of the ejector pin spring 15, and then cooperated with the positioning spring 8 on the sliding block 10 of the third positioning member 6 and the fourth positioning member 7 to realize a double floating positioning structure to avoid damage to the product.

[0045] Specifically, extension blocks are provided on both side surfaces of the sliding block 10 , and guide inclined surfaces 11 are provided on the end surfaces of the extension blocks.

[0046] By adopting the above technical solution and the jig opening mechanism (as shown in the attached figure), a guide slope corresponding to the guide slope 11 is provided on the jig opening mechanism. Through the cooperation of the two guide slopes, the vertical movement of the jig opening mechanism is converted into the horizontal movement of the sliding block 10.

[0047] Specifically, the fixture base 3 is provided with a through slot 33 corresponding to the extension block.

[0048] By adopting the above technical solution, space is provided for the fixture opening mechanism.

[0049] Example 2

[0050] The difference between this embodiment and the first embodiment is that: specifically, one positioning pin hole 32 is a round hole structure, and the other positioning pin hole 32 is a waist hole structure.

[0051] By adopting the above technical solution, the accuracy required for alignment is reduced, which facilitates rapid positioning between the fixture body 2 and the fixture base 1.

[0052] Example 3

[0053] The difference between this embodiment and Example 1 is that: specifically, a central top block 103 corresponding to the positioning cavity 31 is slid on the jig base 1, and side top blocks 104 are respectively provided on both sides of the central top block 103. Top block springs 105 are both provided on the central top block 103 and the side top blocks 104. A corresponding base cover plate 106 is connected to the bottom surface of the jig base 1, and a through hole 107 is provided on the base cover plate 106.

[0054] By adopting the above technical solution, when assembling the product, the center top block 103 and the side top block 104 are lifted upward by the lifting and compensating lifting mechanism (not a necessary technical feature of this application, not shown in the drawings), meeting the requirement that the product needs to be lifted and lowered by 0.58 mm during assembly.

[0055] Example 4

[0056] Furthermore, the method for realizing a turnover fixture capable of forward and reverse rotation and dual floating positioning according to the present invention comprises the following steps:

[0057] (1) The fixture opening mechanism cooperates with the guide slope 11 on the sliding block 10 to push the first positioning member 4, the second positioning member 5, the third positioning member 6, and the fourth positioning member 7 backward, so that the first ejector pin 12 and the second ejector pin 14 retract backward;

[0058] (2) Place the product into the positioning cavity 31, and the fixture opening mechanism retracts upward. The first positioning member 4, the second positioning member 5, the third positioning member 6, and the fourth positioning member 7, under the restoring force of the positioning spring 8, drive the first ejector pin 12 and the second ejector pin 14 to extend, thereby positioning the product;

[0059] (3) Assemble the product;

[0060] (4) After the assembly is completed, the fixture body 2 is turned 180 degrees and the assembly is continued.

[0061] In summary, the present invention positions the product through the cooperation of the first positioning member 4, the second positioning member 5, the third positioning member 6 and the fourth positioning member 7. After the assembly of one end of the product is completed, the fixture body 2 can be flipped 180° and the other end can be assembled. There is no need to perform secondary positioning on the product, ensuring a higher precision turnover requirement. The first ejector pin 12 on the first positioning member 4 and the second positioning member 5 of the present invention adopts a fixed manner to provide a positioning reference to ensure the accuracy of positioning. The first ejector pin 12 and the second ejector pin 14 on the third positioning member 6 and the fourth positioning member 7 are provided with a force by the restoring force of the ejector spring 15, and then cooperate with the positioning spring 8 on the sliding block 10 of the third positioning member 6 and the fourth positioning member 7 to realize a double floating positioning structure to avoid damage to the product. One positioning pin hole 32 of the present invention is a round hole structure, and the other positioning pin hole 32 is a waist hole structure, which reduces the precision required for alignment and facilitates the rapid positioning between the fixture body 2 and the fixture base 1. When assembling the product, the lifting and compensating lifting mechanism lifts the central top block 103 and the side top blocks 104 upwards, thereby meeting the requirement of lifting the product by 0.58 mm during assembly.

[0062] While embodiments of the present invention have been shown and described, it will be appreciated 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 invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A turnover fixture capable of forward and reverse rotation and double floating positioning, characterized by: It includes a jig base, two locating pin sleeves are provided on the jig base, a jig body is provided above the jig base, the jig body includes a jig seat, a positioning cavity is provided at the center of the jig seat, and slide grooves are provided on the four sides of the jig seat. The interiors of the four slide grooves are provided with a first locating member, a second locating member, a third locating member and a fourth locating member in sequence, a positioning cover plate is connected to the opening of the slide groove, and a positioning spring is provided between the first locating member, the second locating member, the third locating member and the fourth locating member and the positioning cover plate.

2. The turnover fixture capable of forward and reverse rotation and double floating positioning according to claim 1, characterized in that: Two diagonally distributed positioning pins are connected to the top of the fixture base, and positioning pin holes corresponding to the positioning pins are provided on the fixture base.

3. The turnover fixture capable of forward and reverse rotation and double floating positioning according to claim 2, characterized in that: One positioning pin hole is a round hole structure, and the other positioning pin hole is a waist hole structure.

4. The turnover fixture capable of forward and reverse rotation and double floating positioning according to claim 1, characterized in that: The first positioning member, the second positioning member, the third positioning member and the fourth positioning member all include a sliding block, the sliding block is connected to two first ejector pins, and the sliding blocks of the third positioning member and the fourth positioning member are further connected to a second ejector pin.

5. The turnover fixture capable of forward and reverse rotation and double floating positioning according to claim 4 is characterized in that: The first ejector pins and the sliding block on the first positioning member and the second positioning member are limited by the machine screws, and an ejector spring is provided between the first ejector pins and the second ejector pins on the third positioning member and the fourth positioning member and the machine screws.

6. The turnover fixture capable of forward and reverse rotation and double floating positioning according to claim 4, characterized in that: Extension blocks are provided on both side surfaces of the sliding block, and guide inclined surfaces are provided on the end surfaces of the extension blocks.

7. The turnover fixture capable of forward and reverse rotation and double floating positioning according to claim 6, characterized in that: The fixture seat is provided with a through slot corresponding to the extension block.

8. The turnover fixture capable of forward and reverse rotation and double floating positioning according to claim 1, characterized in that: A central top block corresponding to the positioning cavity is slidably provided on the fixture base, and side top blocks are respectively provided on both sides of the central top block. Top block springs are sleeved on the central top block and the side top blocks.

9. The turnover fixture capable of forward and reverse rotation and double floating positioning according to claim 8, characterized in that: A corresponding base cover is connected to the bottom surface of the fixture base, and a through hole is provided on the base cover.

10. A method for realizing a turnover fixture capable of forward and reverse rotation and double floating positioning according to any one of claims 1 to 9, characterized in that: The following steps are involved: (1) The fixture opening mechanism cooperates with the guide slope on the sliding block to push the first positioning member, the second positioning member, the third positioning member, and the fourth positioning member backward, so that the first ejector pin and the second ejector pin retract backward; (2) Place the product into the positioning cavity, and the fixture opening mechanism retracts upward. The first positioning member, the second positioning member, the third positioning member, and the fourth positioning member, under the action of the restoring force of the positioning spring, drive the first ejector pin and the second ejector pin to extend, thereby positioning the product; (3) Assemble the product; (4) After assembly is completed, turn the fixture body 180° and continue assembly.

Images