Hot pressing tool for magnet assembly

Abstract

The hot pressing tool comprises a lifting mechanism, a guide frame, pressing heads, springs, guide rods and a jig plate, the guide frame is arranged on the lifting mechanism, a plurality of vertically-penetrating guide holes are formed in the lower portion of the guide frame, the pressing heads are arranged in the guide holes in an up-down moving mode, the springs are arranged on the guide holes, and the guide rods are arranged on the jig plate. A spring is connected between the top end of the pressing head and the guide frame in an abutting mode. A vertical limiting hole is formed in the middle of the pressure head, a fixing hole communicated with the guide hole is formed in the side wall of the guide frame, the fixing hole is horizontally aligned with the limiting hole, and the guide rod penetrates through the fixing hole and the limiting hole; the jig plate is arranged below the pressing head, a product is arranged in the jig plate, the lifting mechanism drives the guide frame to move downwards to enable the pressing head to make contact with the product so as to carry out hot pressing, the product can be automatically pressed downwards to be pressed, pressing can be stably carried out, the setting error of the pressing head can be made up, the working efficiency and the hot pressing qualification rate are improved, and the pressing head is convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnet production, in particular to a hot pressing tool for assembling magnets. Background Art

[0002] At present, in the enterprises producing NdFeB magnets, the method mostly used for bonding non-magnetic sheets to magnets is: first, glue is applied to one side of the magnet with a dispensing machine, and then the non-magnetic sheets are manually placed on the magnet for bonding. Then the bonded product is placed on a jig plate, and finally, the jig plate is manually placed under the hot pressing equipment, and the hot pressing equipment is controlled to press down for high-temperature pressing.

[0003] In the prior art, the pressing is done manually, and the pressure cannot be accurately guaranteed. In addition, the manual control of the pressing is not stable enough, and it is easy to cause shaking, which affects the pressing effect. Moreover, during hot pressing, it is necessary to control multiple pressing heads to press down multiple products at the same time. The products are inside the jig plate, and their surfaces are flush. Therefore, it is necessary to set the pressing end faces of all the pressing heads on the same horizontal plane. However, the setting of the pressing heads of the existing hot pressing equipment will have errors, making it difficult to contact the pressing end faces of all the pressing heads with the products. This will easily cause the hot pressing of some products to fail, affecting the yield rate. In addition, the existing pressing heads are fixed on the hot pressing tooling, which is difficult to disassemble or the disassembly steps are complicated, and the pressing heads cannot be quickly disassembled and replaced. Utility Model Content

[0004] The purpose of the utility model is to provide a hot pressing tool for assembling magnets, which automatically presses down the product for pressing, can stabilize the pressing and compensate for the setting error of the pressing head, improve the work efficiency and the hot pressing qualification rate, and is convenient for disassembling and assembling the pressing head.

[0005] To achieve the above-mentioned purpose, the solution of the present invention is: a hot pressing tooling for magnet assembly, comprising a lifting mechanism, a guide frame, a pressure head, a spring, a guide rod, and a jig plate, wherein the guide frame is arranged on the lifting mechanism, and the lower part of the guide frame is provided with a plurality of vertically penetrating guide holes, a pressure head is arranged in the guide hole so as to move up and down, and a spring is abutted between the top of the pressure head and the guide frame; a vertical limiting hole is provided in the middle part of the pressure head, and a fixing hole connected to the guide hole is provided on the side wall of the guide frame, the fixing hole is horizontally aligned with the limiting hole, and the guide rod is passed through the fixing hole and the limiting hole; the jig plate is arranged below the pressure head, and the product is installed in the jig plate, and the lifting mechanism drives the guide frame to move downward so that the pressure head contacts the product for hot pressing.

[0006] Furthermore, the guide hole is arranged inside the guide frame, and fixing holes are provided on the front and rear side walls of the guide frame. The two ends of the guide rod are respectively passed through the two fixing holes, and the middle part of the guide rod is passed through the limiting hole.

[0007] Furthermore, the guide frame includes a frame body and a cover plate, a guide hole passing through the frame body is provided inside, a fixing hole is provided on the side wall of the frame body, the cover plate is placed on the frame body, and both ends of the spring are respectively in contact with the pressure head and the cover plate.

[0008] Furthermore, a fixing hole is provided on the lower side wall of the frame body, and a window communicating with the guide hole is provided on the upper side wall of the frame body, wherein the top end of the pressure head and the spring are exposed through the window.

[0009] Furthermore, a mounting post is provided at the top of the pressure head, a fixing groove is provided at the bottom of the cover plate, the top of the spring is embedded in the fixing groove, and the bottom end of the spring is sleeved on the mounting post.

[0010] Furthermore, a receiving groove for placing the product is provided inside the jig plate, and a positioning plate is provided above the jig plate. A hot pressing hole and a positioning hole are provided on the positioning plate. The hot pressing hole is located above the receiving groove. When the product is placed in the receiving groove, the top of the product is higher than the receiving groove to extend into the hot pressing hole; there are two positioning holes and they are respectively arranged on both sides of the hot pressing hole. A hot pressing head and two positioning heads are provided at the bottom end of the pressing head. The length of the positioning head is greater than the length of the hot pressing head. The hot pressing head cooperates with the hot pressing hole to hot press the product, and the positioning head cooperates with the positioning hole to position the hot pressing head.

[0011] Furthermore, the two diagonal portions of the positioning plate are provided with connecting holes, the two diagonal portions of the jig plate are provided with connecting grooves corresponding to the connecting holes, a positioning column is passed through the connecting hole and the connecting groove, and the positioning plate is positioned on the jig plate through the positioning column.

[0012] Furthermore, a heat insulation block is provided between the lifting mechanism and the guide frame.

[0013] Furthermore, the hot pressing tooling also includes a frame, the frame includes a bottom plate and a back plate, the lifting mechanism is installed on the back plate, and the bottom plate is provided with a mounting groove for mounting the jig plate.

[0014] Furthermore, the lifting mechanism is a lifting cylinder, the cylinder body of the lifting cylinder is fixed on the back plate, the telescopic rod of the lifting cylinder is connected to the guide frame through a lifting plate, a first limit block is provided on the cylinder body, and a second limit block is provided on the lifting plate. When the telescopic rod is extended downward until the pressure head contacts the product, the first limit block and the second limit block abut against each other to limit the telescopic rod from continuing to move downward.

[0015] After adopting the above solution, the beneficial effects of the utility model are:

[0016] The utility model controls the downward movement of the pressure head by the lifting mechanism, which can avoid shaking of the pressure head when pressing down, realize stable downward pressing of the pressure head, and improve the qualified rate of hot pressing; and a spring is arranged between the guide frame and the pressure head. When the lifting cylinder drives the pressure head to move downward to contact the product, the elastic force of the spring enables the pressure head to better exert a certain pressure on the product, thereby making the non-magnetic sheet and the magnet close to ensure the accuracy of hot pressing, and the expansion and contraction of the spring can drive the expansion and contraction of the pressure head to compensate for the setting error of different pressure heads, ensuring that the pressing end face of the bottom of the pressure head can contact the corresponding product, further improving the qualified rate of hot pressing, in addition, the pressure head can also adapt to products of different heights, and has good adaptability.

[0017] The pressure head of the present invention is movably mounted in a guide hole by a guide rod. A vertical limiting hole is provided inside the pressure head. A fixing hole communicating with the guide hole is provided on the side wall of the guide frame. The fixing hole and the limiting hole are horizontally aligned. The guide rod is inserted into the fixing hole and the limiting hole to limit the pressure head in the guide hole and prevent the pressure head from being separated from the guide hole. Since the limiting hole is a vertical hole set vertically, the pressure head can be limited by the guide rod and can also move up and down. The cooperation between the guide rod and the limiting hole can also prevent the pressure head from rotating circumferentially and deflecting. When the pressure head needs to be disassembled, the guide rod only needs to be pulled out of the limiting hole and the fixing hole to remove the pressure head from the guide hole. Similarly, the pressure head is installed in the guide hole so that the limiting hole and the fixing hole are horizontally aligned. The guide rod is then inserted into the fixing hole and the limiting hole to install the pressure head. The disassembly and assembly of the pressure head is quick and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0020] Figure 3 This is an exploded view of the cooperation between the guide frame and the hot pressing head of the utility model;

[0021] Figure 4 This is a schematic structural diagram of the cover plate of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the frame of the utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the positioning plate and the fixture plate of the utility model;

[0024] Figure 7 This is an exploded view of the cooperation between the positioning plate and the fixture plate of the utility model.

[0025] Description of labels:

[0026] 1. Lifting mechanism; 11. Cylinder body; 12. Telescopic rod; 13. Lifting plate; 14. First limit block; 15. Second limit block; 2. Guide frame; 21. Frame body; 211. Guide hole; 212. Fixing hole; 213. Window; 22. Cover plate; 221. Fixing slot; 23. Connecting plate; 3. Press head; 31. Limit hole; 32. Mounting column; 33. Hot pressing head; 34. Positioning head; 4. Spring; 5. Guide rod; 6. Jig plate; 61. Receiving slot; 62. Connecting slot; 7. Insulation block; 8. Positioning plate; 81. Hot pressing hole; 82. Positioning hole; 83. Connecting hole; 9. Frame; 91. Bottom plate; 911. Mounting slot; 92. Back plate; 10. Positioning column. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1-7 As shown, the utility model provides a hot pressing tool for magnet assembly, including a lifting mechanism 1, a guide frame 2, a pressure head 3, a spring 4, a guide rod 5, and a fixture plate 6. The guide frame 2 is arranged on the lifting mechanism 1, and the lower part of the guide frame 2 is provided with a plurality of vertical guide holes 211. The pressure head 3 is arranged in the guide hole 211 for upward and downward movement. The top of the pressure head 3 is in contact with the guide frame 2 with a spring 4; the fixture plate 6 is arranged below the pressure head 3, and the product is installed in the fixture plate 6. 1 drives the guide frame 2 to move downward until the pressure head 3 contacts the product for hot pressing. The elastic force of the spring 4 enables the pressure head 3 to better apply a certain pressure to the product, thereby making the non-magnetic piece close to the magnet, ensuring the accuracy of hot pressing. In addition, multiple pressure heads 3 and guide holes 211 can be provided. The expansion and contraction of the spring 4 can drive the pressure head 3 to expand and contract to compensate for the setting errors of different pressure heads 3, ensuring that the pressing end surface of the bottom of the pressure head 3 can contact the corresponding product, improving the hot pressing qualification rate. In addition, the pressure head 3 can also be adapted to products of different heights, with good adaptability. In addition, the lifting mechanism 1 can be specifically a lifting cylinder. The lifting cylinder replaces manual driving to press the pressure head 3 downward, which can avoid shaking of the pressure head 3 when pressing downward, achieve stable downward pressing of the pressure head 3, and improve the hot pressing qualification rate.

[0029] Key references Figure 3A vertical limiting hole 31 is provided in the middle of the pressing head 3, and the limiting hole 31 is specifically a strip-shaped vertical hole structure. The side wall of the guide frame 2 is provided with a fixing hole 212 connected to the guide hole 211, and the fixing hole 212 is horizontally aligned with the limiting hole 31. The guide rod 5 is passed through the fixing hole 212 and the limiting hole 31, and the pressing head 3 can be limited and installed in the guide hole 211 to prevent the pressing head 3 from escaping from the guide hole 211. Since the limiting hole 31 is a vertical hole structure, the pressing head 3 can be limited by the guide rod 5 while also moving up and down. The cooperation between the guide rod 5 and the limiting hole 31 can also prevent the pressing head 3 from rotating circumferentially and deflecting. When the pressure head 3 needs to be disassembled, the guide rod 5 only needs to be pulled out from the limiting hole 31 and the fixing hole 212 to remove the pressure head 3 from the guide hole 211. Similarly, after the pressure head 3 is installed into the guide hole 211 so that the limiting hole 31 and the fixing hole 212 are horizontally aligned, the guide rod 5 can be inserted into the fixing hole 212 and the limiting hole 31 to install the pressure head 3. The disassembly and assembly of the pressure head 3 is quick and convenient.

[0030] Key references Figure 3 and Figure 5 The guide hole 211 is arranged inside the guide frame 2, and fixing holes 212 are provided on the front and rear side walls of the guide frame 2. The fixing holes 212 are aligned with the limiting holes 31 front and back. The two ends of the guide rod 5 are respectively passed through the two fixing holes 212, and the middle part of the guide rod 5 is passed through the limiting hole 31. Both ends of the guide rod 5 are located in the fixing holes 212, which can stably limit the pressure head 3, and the guide rod 5 and the pressure head 3 are not easy to detach.

[0031] Key references Figure 3-5 The guide frame 2 includes a frame body 21 and a cover plate 22. A guide hole 211 extending vertically through the frame body 21 is provided inside the frame body 21. A fixing hole 212 is provided on the side wall of the frame body 21. The cover plate 22 is placed on the frame body 21. The two ends of the spring 4 are respectively in contact with the pressure head 3 and the cover plate 22. The pressure head 3 and the cover plate 22 are detachably connected and fixed. When installing the pressure head 3, the pressure head 3 can be first limited and installed in the guide hole 211, and then the spring 4 is installed, and finally the cover plate 22 is installed. This arrangement facilitates the installation of the spring 4. Furthermore, a mounting post 32 can be provided at the top of the pressure head 3, and a fixing groove 221 is provided at the bottom of the cover plate 22. The top end of the spring 4 is embedded in the fixing groove 221, and the bottom end of the spring 4 is sleeved on the mounting post 32. The arrangement of the fixing groove 221 and the mounting post 32 makes it easy to position and install the spring 4. After the cover plate 22 is fixed, the pressure head 3 and the spring 4 can be installed or removed from the bottom of the frame body 21. In addition, the fixing hole 212 is specifically installed on the lower side wall of the frame 21, and the upper side wall of the frame 21 is provided with a window 213 connected to the guide hole 211. The window 213 exposes the top of the pressure head 3 and the spring 4. Through the window 213, it can be observed whether the spring 4 is offset or installed in place.

[0032] Key references Figure 1 and Figure 2 An insulation block 7 is provided between the lifting mechanism 1 and the guide frame 2. The insulation block 7 can isolate heat and prevent heat from being transferred from the pressure head 3 to the lifting mechanism 1 to affect the operation of the lifting mechanism 1. A connecting plate 23 is provided between the insulation block 7 and the cover plate 22. The connecting plate 23 is used to connect the insulation block 7 and the guide frame 2. The top of the connecting plate 23 is fixed to the insulation block 7, and the bottom plate 91 is connected and fixed to the connecting plate 23. The connecting plate 23, the cover plate 22 and the frame body 21 can be fixed by bolts for easy disassembly and assembly.

[0033] Key references Figure 3 、 Figure 6 and Figure 7 The interior of the jig plate 6 is provided with a receiving groove 61 for placing the product, and a positioning plate 8 is provided above the jig plate 6. The positioning plate 8 is provided with a hot pressing hole 81 and a positioning hole 82. The hot pressing hole 81 is located above the receiving groove 61. When the product is placed in the receiving groove 61, its top will be higher than the receiving groove 61 and extend into the hot pressing hole 81. There are two positioning holes 82 and they are respectively arranged on both sides of the hot pressing hole 81. The bottom end of the pressing head 3 is provided with a hot pressing head 33 and two positioning heads 34. The hot pressing head 3 3 is the pressing end surface, the length of the positioning head 34 is longer than the thickness of the positioning plate 8 or the same as the thickness of the positioning plate 8, the length of the hot pressing head 33 is less than the length of the positioning head 34, when the lifting mechanism 1 drives the pressure head 3 to press down, the positioning head 34 will be inserted into the positioning hole 82 until it contacts the top surface of the jig plate 6, at the same time, the hot pressing head 33 is inserted into the hot pressing hole 81 to contact the product to hot press the product, the cooperation between the positioning head 34 and the positioning hole 82 can make the hot pressing head 33 accurately inserted into the hot pressing hole 81, preventing the hot pressing head 33 from offset.

[0034] Furthermore, connecting holes 83 are provided at the two diagonal portions of the positioning plate 8, and connecting grooves 62 corresponding to the connecting holes 83 are provided at the two diagonal portions of the jig plate 6. A positioning column 10 is passed through the connecting hole 83 and the connecting groove 62. The positioning column 10 can position the positioning plate 8 on the jig plate 6 to prevent the positioning plate 8 from shifting relative to the jig plate 6, and one of the connecting holes 83 can be set into a transverse groove structure along the length direction of the jig plate 6. First, a positioning column 10 is installed in the transverse groove and the connecting groove 62 corresponding to the transverse groove. The positioning plate 8 can be moved to align the other connecting hole 83 with the connecting groove 62, and then another positioning column 10 is installed to position the positioning plate 8. The transverse groove structure can compensate for the deviation between the connecting hole 83 and the connecting groove 62.

[0035] Key references Figure 1 and Figure 2The hot pressing tooling also includes a frame 9, which includes a bottom plate 91 and a back plate 92. The lifting mechanism 1 is installed on the back plate 92. The bottom plate 91 is provided with a mounting groove 911 for mounting the jig plate 6. After the product is placed on the jig plate 6, the jig plate 6 is placed into the mounting groove 911 to perform hot pressing. The lifting mechanism 1 includes a cylinder body 11 and a telescopic rod 12. The cylinder body 11 is fixed on the back plate 92. The telescopic rod 12 is connected to the guide frame 2 through a lifting plate 13. The lifting plate 13 can be specifically connected to the insulation block 7. A first limit block 14 is provided on the cylinder body 11, and a second limit block 15 is provided on the lifting plate 13. When the telescopic rod 12 extends downward until the pressure head 3 contacts the product, the first limit block 14 and the second limit block 15 abut and cooperate to limit the telescopic rod 12 from continuing to move downward, thereby preventing the telescopic rod 12 from descending too far and crushing the pressure head 3 and the product.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the design of this case. Any equivalent changes made based on the key design of this case shall fall within the scope of protection of this case.

Claims

1. A hot pressing tool for magnet assembly, characterized by: It includes a lifting mechanism, a guide frame, a pressure head, a spring, a guide rod, and a jig plate. The guide frame is arranged on the lifting mechanism. The lower part of the guide frame is provided with a plurality of vertically penetrating guide holes. The pressure head is arranged in the guide hole so as to move up and down. A spring is abutted between the top of the pressure head and the guide frame. The middle part of the pressure head is provided with a vertical limiting hole. The side wall of the guide frame is provided with a fixing hole connected to the guide hole. The fixing hole is horizontally aligned with the limiting hole, and the guide rod is passed through the fixing hole and the limiting hole. The jig plate is arranged below the pressure head. The product is installed in the jig plate. The lifting mechanism drives the guide frame to move downward so that the pressure head contacts the product for hot pressing.

2. A hot pressing tool for magnet assembly according to claim 1, characterized in that: The guide hole is arranged inside the guide frame, and fixing holes are provided on the front and rear side walls of the guide frame. The two ends of the guide rod are respectively passed through the two fixing holes, and the middle part of the guide rod is passed through the limiting hole.

3. A hot pressing tool for magnet assembly according to claim 1 or 2, characterized in that: The guide frame includes a frame body and a cover plate. The frame body is provided with a guide hole running through the frame body, and the side wall of the frame body is provided with a fixing hole. The cover plate is placed on the frame body, and the two ends of the spring are respectively in contact with the pressure head and the cover plate.

4. A hot pressing tool for magnet assembly according to claim 3, characterized in that: A fixing hole is provided on the lower side wall of the frame body, and a window communicating with the guide hole is provided on the upper side wall of the frame body, wherein the top end of the pressure head and the spring are exposed through the window.

5. The hot pressing tool for magnet assembly according to claim 3, characterized in that: The top of the pressure head is provided with a mounting column, the bottom of the cover plate is provided with a fixing groove, the top of the spring is embedded in the fixing groove, and the bottom end of the spring is sleeved on the mounting column.

6. The hot pressing tool for magnet assembly according to claim 1, characterized in that: The inside of the jig plate is provided with a receiving groove for placing the product, and a positioning plate is provided above the jig plate. The positioning plate is provided with a hot pressing hole and a positioning hole. The hot pressing hole is located above the receiving groove. When the product is placed in the receiving groove, the top of the product is higher than the receiving groove to extend into the hot pressing hole; there are two positioning holes and they are respectively arranged on both sides of the hot pressing hole. A hot pressing head and two positioning heads are provided at the bottom end of the pressing head. The length of the positioning head is greater than the length of the hot pressing head. The hot pressing head cooperates with the hot pressing hole to hot press the product, and the positioning head cooperates with the positioning hole to position the hot pressing head.

7. The hot pressing tool for magnet assembly according to claim 6, characterized in that: The two diagonal portions of the positioning plate are provided with connecting holes, the two diagonal portions of the jig plate are provided with connecting grooves corresponding to the connecting holes, a positioning column is passed through the connecting hole and the connecting groove, and the positioning plate is positioned on the jig plate through the positioning column.

8. The hot pressing tool for magnet assembly according to claim 1, characterized in that: A heat insulation block is provided between the lifting mechanism and the guide frame.

9. The hot pressing tool for magnet assembly according to claim 1, characterized in that: The hot pressing tool further includes a frame, which includes a bottom plate and a back plate. The lifting mechanism is installed on the back plate, and the bottom plate is provided with a mounting groove for mounting a jig plate.

10. The hot pressing tool for magnet assembly according to claim 9, characterized in that: The lifting mechanism is a lifting cylinder, the cylinder body of the lifting cylinder is fixed on the back plate, the telescopic rod of the lifting cylinder is connected to the guide frame through a lifting plate, a first limit block is provided on the cylinder body, and a second limit block is provided on the lifting plate. When the telescopic rod is extended downward until the pressure head contacts the product, the first limit block and the second limit block abut against each other to limit the telescopic rod from continuing to move downward.

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