Negative pressure jig

Abstract

The utility model relates to the technical field of jigs, and discloses a negative pressure jig which comprises a machine body, and a negative pressure cavity which forms a set negative pressure state through air exhaust is formed in the machine body. The machine body is provided with a mold core insert core, the mold core insert core is provided with a mounting position for mounting a pole, the negative pressure cavity forms an adsorption opening at the mounting position, and after the pole is placed on the mounting position, the pole covers the adsorption opening and is fixed on the mold core insert core; after the pole is placed on the mold core insert core, the machine body is vacuumized, so that the negative pressure cavity is in a negative pressure state, the pole is stably adsorbed on the mold core insert core, the pole is effectively fixed, and the risk that the pole deviates or falls off in the moving process of the machine body is avoided; according to the invention, the pole can be transferred at each assembly station along with the vacuum holding jig, and the structural members such as a sealing ring, lower plastic, a top cover and a pole block can be assembled respectively, so that the assembly efficiency of the battery top cover is greatly improved.

Description

Technical Field

[0001] The utility model patent relates to the technical field of fixtures, and specifically, to a negative pressure fixture. Background Art

[0002] During the assembly process of the battery top cover, the pole needs to be riveted, and generally a pole riveting device is used to rivet the pole. That is, after the various components of the battery top cover are assembled, the pole is riveted using a pole riveting device.

[0003] In the actual assembly process, after installing the pole, sealing ring, lower plastic, top cover and pole block on the special jig, the special jig and the top cover components are transferred to the stamping machine. After positioning the special jig, the pole is stamped to rivet the pole and the pole block together.

[0004] In the prior art, due to the structure of the battery top cover, the step design of the pole position in the special jig is relatively low, and the special jig is not convenient for effectively fixing the pole. Moreover, in the process of assembling various components of the battery reformer, it is not convenient to move the special jig. When the special jig is moved, the pole is prone to displacement or even falling off.

[0005] In view of the problems existing in the prior art, the assembly of components such as poles, sealing rings, lower plastics, top covers, pole blocks, etc. can only be completed at the same workstation, which cannot meet the needs of step-by-step assembly on the assembly line, resulting in cumbersome and inefficient assembly operations of the battery top cover. Utility Model Content

[0006] The utility model aims to provide a negative pressure fixture, aiming to solve the problem of low battery top cover assembly efficiency in the prior art.

[0007] The utility model is implemented as follows: a negative pressure fixture comprises a body, wherein the body has a negative pressure cavity which is formed by vacuuming and maintains a set negative pressure state; the body has a core insert, the core insert has a mounting position for mounting a pole, the negative pressure cavity is formed with a suction port at the mounting position, and when the pole is placed on the mounting position, the pole covers the suction port, and the pole is fixed on the core insert.

[0008] Furthermore, a plurality of limit blocks for limiting the outer periphery of the top cover piece are protruding upward from the top of the body, and the plurality of limit blocks are arranged around the periphery of the mold core insert, and the plurality of limit blocks enclose an assembly area for assembling the battery top cover.

[0009] Furthermore, a support rod is provided in the negative pressure chamber, one end of the support rod is connected to the bottom wall of the negative pressure chamber, and the other end of the support rod is connected to the mold core insert.

[0010] Furthermore, the machine body is provided with an air suction port connected to the negative pressure chamber, and a blocking member is movably provided on the air suction port; the blocking member has a first state of opening the air suction port, or has a second state of automatically blocking the air suction port.

[0011] Furthermore, a spring-loaded part is provided on the blocking part, and the spring-loaded part has elastic pressure acting on the blocking part along a first direction, and the first direction is the direction from the side of the air suction port close to the negative pressure chamber to the side of the air suction port away from the negative pressure chamber.

[0012] Furthermore, the negative pressure fixture also includes a vacuum pumping mechanism, which includes a vacuum generator and an air pipe joint connected to the vacuum generator, and the air pipe joint is used to press the sealing member to a first state so that the vacuum generator can evacuate the negative pressure chamber to form a negative pressure.

[0013] Furthermore, the vacuum pumping mechanism includes a placement plate, the air pipe joint is connected to a support tube, the support tube is passed through the placement plate, and the support tube is inserted into the air suction port to press the blocking piece to move away from the air suction port so that the blocking piece is in the first state.

[0014] Furthermore, the placement plate is provided with a first positioning portion, and the bottom of the body is provided with a second positioning portion adapted to be connected with the first positioning portion.

[0015] Furthermore, the machine body includes a pad, a middle layer fixing plate and a core fixing plate which are connected in sequence, and the core insert is arranged on the core fixing plate; the bottom of the negative pressure cavity extends into the pad, the middle part of the negative pressure cavity passes through the middle layer fixing plate and the core fixing plate, and the top of the negative pressure cavity extends into the core insert.

[0016] Furthermore, a first sealing ring is provided between the pad and the middle fixed plate, and a second sealing ring is provided between the middle fixed plate and the core fixed plate; the first sealing ring and the second sealing ring both surround the outer circumference of the negative pressure cavity.

[0017] Compared with the prior art, the negative pressure fixture provided by the utility model, after placing the pole on the core insert, evacuates the body so that the negative pressure chamber is in a negative pressure state, and the pole is firmly adsorbed on the core insert, thereby achieving effective fixation of the pole. At this time, the negative pressure chamber maintains a negative pressure state, so that the risk of the pole being offset or falling off is avoided during the movement of the body, and the pole can be transferred to each assembly station with the vacuum holding fixture, and the sealing ring, lower plastic, top cover, pole block and other structural parts can be assembled respectively; compared with the existing assembly operation that can only be performed by the same assembly operator at the same station, it is easier to realize the automation of the assembly operation or to complete the assembly by multiple assembly operators, thereby greatly improving the assembly efficiency of the battery top cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the negative pressure fixture provided by the utility model;

[0019] Figure 2 It is an exploded three-dimensional schematic diagram of the negative pressure fixture provided by the utility model;

[0020] Figure 3 It is a cross-sectional schematic diagram of the negative pressure fixture provided by the utility model;

[0021] In the figure: a placement plate 100, a vacuum generator 101, a positioning block 102, an air pipe joint 103, a support tube 104; a pad 201, a middle layer fixing plate 202, a core fixing plate 203, a limit block 2031, a core insert 204; a support rod 300; a top cover piece 400, a pole 401; a blocking piece 500, and a spring-pressing piece 501. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] The implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0024] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] Reference Figure 1-3 As shown, it is a preferred embodiment provided by the utility model.

[0026] The negative pressure fixture includes a body, which has a negative pressure cavity formed by vacuuming and maintaining a set negative pressure state; the body has a core insert 204, the core insert 204 has an installation position for installing a pole 401, and the negative pressure cavity is formed with a suction port at the installation position. When the pole 401 is placed on the installation position, the pole 401 covers the suction port, and the pole 401 is fixed on the core insert 204.

[0027] The negative pressure fixture provided above, after placing the pole 401 on the core insert 204, evacuates the body to make the negative pressure chamber in a negative pressure state, and the pole 401 is firmly adsorbed on the core insert 204, thereby effectively fixing the pole 401. At this time, the negative pressure chamber maintains a negative pressure state, so that during the movement of the body, the risk of the pole 401 being offset or falling can be avoided, and the pole 401 can be transferred to each assembly station with the vacuum holding fixture, and the sealing ring, lower plastic, top cover, pole block and other structural parts can be assembled respectively. Compared with the existing assembly operation that can only be performed by the same assembly operator at the same station, it is easier to automate the assembly operation or can be completed by multiple assembly operators, thereby greatly improving the assembly efficiency of the battery top cover.

[0028] In some embodiments, a plurality of stoppers 2031 for limiting the outer periphery of the top cover sheet 400 are protruding upward from the top of the body, and the plurality of stoppers 2031 are arranged around the periphery of the mold core insert 204, and the plurality of stoppers 2031 enclose an assembly area for assembling the battery top cover. In the assembly area, the sealing ring, the lower plastic, the top cover, the pole block and other structural parts can be assembled respectively, and the stoppers 2031 can be used to limit the outer periphery of the top cover sheet 400.

[0029] In some embodiments, a support rod 300 is provided in the negative pressure chamber, one end of the support rod 300 is connected to the bottom wall of the negative pressure chamber, and the other end of the support rod 300 is connected to the core insert 204. The support rod 300 is provided in the negative pressure chamber to support the core insert 204 to reduce the risk of the core insert 204 being compressed and deformed during the riveting process.

[0030] The machine body is provided with an air extraction port connected to the negative pressure chamber, and a blocking member 500 is movably provided on the air extraction port. The blocking member 500 has a first state of opening the air extraction port, or a second state of automatically blocking the air extraction port. When the blocking member 500 is in the first state, the negative pressure chamber can be evacuated, and when the blocking member 500 is in the second state, the air extraction port can be automatically blocked, so that the negative pressure chamber maintains a negative pressure state, thereby meeting the use requirements of the assembly operation.

[0031] In some embodiments, a spring-loaded member 501 is provided on the blocking member 500, and the spring-loaded member 501 has elastic pressure acting on the blocking member 500 along a first direction, and the first direction is the direction from the side of the vacuum port close to the negative pressure chamber to the side of the vacuum port away from the negative pressure chamber.

[0032] In this embodiment, the sealing member 500 is driven by the spring-pressing member 501, so that the sealing member 500 can automatically block the exhaust port; in addition, when the sealing member 500 is pressed to the first state, the spring-pressing member 501 is compressed and deformed, and the spring-pressing member 501 is preferably a compression spring.

[0033] When the blocking member 500 is in the first state, the blocking member 500 is pressed to break away from blocking the air outlet, and the spring-pressing member 501 is compressed and deformed. When the blocking member 500 is in the second state, the blocking member 500 automatically blocks the air outlet under the action of the spring-pressing member 501.

[0034] By providing the elastic member 501, the elastic member 501 can be deformed after being squeezed, so as to facilitate opening the air extraction port, and the elastic member 501 always presses against the blocking member 500, so that the blocking member 500 can automatically block the air extraction port.

[0035] In some embodiments, the negative pressure fixture includes a vacuum pumping mechanism, which includes a vacuum generator 101 and an air pipe connector 103 connected to the vacuum generator 101, and the air pipe connector 103 is used to press the sealing member 500 to a first state so that the vacuum generator 101 can evacuate the negative pressure chamber to form negative pressure.

[0036] The vacuum pumping mechanism includes a placement plate 100, and a support tube 104 is connected to the air pipe joint 103. The support tube 104 is passed through the placement plate 100 and extends to the top of the placement plate 100; the support tube 104 is inserted into the air suction port, pressing the blocking piece 500 to move away from the air suction port so that the blocking piece 104 is in the first state.

[0037] When the machine body is placed on the placement plate 100, the support tube 104 is inserted into the air extraction port. By arranging the placement plate 100, it is convenient to perform air extraction operation on the negative pressure cavity of the machine body. The machine body can be directly placed on the placement plate 100, and the air extraction operation is convenient.

[0038] When the support tube 104 is inserted into the air extraction port, the support tube 104 presses the blocking piece 500 to disengage the blocking of the air extraction port, and the negative pressure chamber can be evacuated through the vacuum generator 101 to form a negative pressure state in the negative pressure chamber. That is, when the machine body is evacuated, the support tube 104 is inserted into the air extraction port, and the blocking piece 500 is lifted up by the support tube 104, so that the air extraction port is opened, and the negative pressure chamber can be evacuated by the vacuum generator 101. On the contrary, when the machine body is removed from the placement plate 100, the support tube 104 withdraws from the air extraction port and separates from the blocking piece 500. Then, under the elastic force of the spring-pressing piece 501, the blocking piece 500 can automatically block the air extraction port to meet the use requirements.

[0039] In some embodiments, in order to facilitate the accurate placement of the machine body at the designated position of the placement plate 100 to meet the vacuum requirements of the negative pressure chamber, a first positioning portion is provided on the placement plate 100, and a second positioning portion adapted to connect with the plurality of first positioning portions is provided at the bottom of the machine body. As a preferred embodiment, the first positioning portion is a positioning block 102, and the second positioning portion is a positioning hole. When the machine body is placed on the placement plate 100, the positioning block 102 is embedded in the positioning hole.

[0040] Through the cooperation between the positioning block 102 and the positioning hole, the machine body can be accurately placed on the placement plate 100, and the support tube 104 can be accurately inserted into the air suction port.

[0041] In some embodiments, the machine body includes a pad 201, a middle layer fixing plate 202 and a core fixing plate 203 connected in sequence. Along the first direction, the pad 201, the middle layer fixing plate 202 and the core fixing plate 203 are stacked in sequence, and the core insert 204 is set on the core fixing plate 203.

[0042] The bottom of the negative pressure cavity extends into the backing plate 201 , the middle of the negative pressure cavity penetrates the middle layer fixing plate 202 and the mold core fixing plate 203 , and the top of the negative pressure cavity extends into the mold core insert 204 .

[0043] The machine body is composed of a pad 201 , a middle fixing plate 202 and a core fixing plate 203 , which is convenient for the production and manufacture of the machine body, the placement of the core insert 204 , and the placement of the pole 401 in the core insert 204 .

[0044] The negative pressure chamber has a middle layer section located in the middle layer fixing plate 202 and a core section located in the core fixing plate 203. The outer circumference of the middle layer section is larger than that of the core section, which can facilitate the installation of the support rod 300 and improve the negative pressure performance.

[0045] In some embodiments, a first sealing ring is provided between the pad 201 and the middle fixing plate 202, and a second sealing ring is provided between the middle fixing plate 202 and the core fixing plate 203; the first sealing ring and the second sealing ring are both arranged around the outer circumference of the negative pressure cavity.

[0046] By arranging the first sealing ring and the second sealing ring, the sealing between the pad 201 and the middle fixed plate 202, and the sealing between the middle fixed plate 202 and the core fixed plate 203 are achieved to ensure the sealing performance of the negative pressure cavity, thereby facilitating the negative pressure cavity to remain in a negative pressure state.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Negative pressure fixture, characterized in that: The invention comprises a machine body, wherein the machine body has a negative pressure chamber which is formed by exhausting air and maintains a set negative pressure state; the machine body has a core insert (204), the core insert (204) has a mounting position for mounting a pole (401), the negative pressure chamber has a suction port formed at the mounting position, and when the pole (401) is placed on the mounting position, the pole (401) covers the suction port, and the pole (401) is fixed on the core insert (204).

2. The negative pressure fixture according to claim 1, characterized in that: A plurality of limit blocks (2031) for limiting the outer periphery of the top cover sheet (400) are protruding upward from the top of the body, and the plurality of limit blocks (2031) are arranged around the periphery of the mold core insert (204), and the plurality of limit blocks (2031) enclose an assembly area for assembling the battery top cover.

3. The negative pressure fixture according to claim 1, characterized in that: A support rod (300) is provided in the negative pressure chamber, one end of the support rod (300) is connected to the bottom wall of the negative pressure chamber, and the other end is connected to the mold core insert (204).

4. The negative pressure fixture according to any one of claims 1 to 3, characterized in that: The machine body is provided with an air suction port connected to the negative pressure chamber, and a blocking member (500) is movably provided on the air suction port; the blocking member (500) has a first state of opening the air suction port, or a second state of automatically blocking the air suction port.

5. The negative pressure fixture according to claim 4, characterized in that: The sealing member (500) is provided with an elastic pressure member (501), and the elastic pressure member (501) has an elastic pressure acting on the sealing member (500) along a first direction, and the first direction is the direction from the side of the air suction port close to the negative pressure chamber to the side of the air suction port away from the negative pressure chamber.

6. The negative pressure fixture according to claim 5, characterized in that: The negative pressure fixture also includes a vacuum pumping mechanism, which includes a vacuum generator (101) and an air pipe joint (103) connected to the vacuum generator (101), wherein the air pipe joint (103) is used to press the sealing member (500) to a first state so that the vacuum generator (101) can pump air into the negative pressure chamber to form a negative pressure.

7. The negative pressure fixture according to claim 6, characterized in that: The vacuum pumping mechanism comprises a placement plate (100), the air pipe joint (103) is connected to a support tube (104), the support tube (104) is passed through the placement plate (100), and the support tube (104) is inserted into the air suction port to press the blocking member (500) to move away from the air suction port, so that the blocking member (500) is in a first state.

8. The negative pressure fixture according to claim 7, characterized in that: The placement plate (100) is provided with a first positioning portion, and the bottom of the machine body is provided with a second positioning portion adapted to be connected with the first positioning portion.

9. The negative pressure fixture according to any one of claims 1 to 3, characterized in that: The machine body comprises a backing plate (201), a middle layer fixing plate (202) and a core fixing plate (203) which are connected in sequence, and the core insert (204) is arranged on the core fixing plate (203); the bottom of the negative pressure cavity extends into the backing plate (201), the middle of the negative pressure cavity penetrates the middle layer fixing plate (202) and the core fixing plate (203), and the top of the negative pressure cavity extends into the core insert (204).

10. The negative pressure fixture according to claim 9, characterized in that: A first sealing ring is provided between the pad (201) and the middle layer fixing plate (202), and a second sealing ring is provided between the middle layer fixing plate (202) and the core fixing plate (203); the first sealing ring and the second sealing ring both surround the outer circumference of the negative pressure cavity.

Images