Hot melting mold

Abstract

The utility model discloses a hot melting mold, and relates to the technical field of integrated busbar processing. A lower cooling copper pipe joint is mounted on a melting head mounting plate through a cooling air pipe joint, a bent cooling copper pipe is hermetically clamped at the bottom of the lower cooling copper pipe joint, and an air outlet of the cooling copper pipe directly faces a hot melting cavity; the forming melting head and the bottom of the telescopic guide column are fixed into a whole through threads, and the upper side portion of the forming melting head is provided with a fixing screw used for abutting against the heating rod and a temperature sensor used for detecting the temperature of the forming melting head in real time. According to the utility model, the compression and sliding of the telescopic guide pillar and the molding fuse head are smoother by arranging the copper sleeve, so that the service life is prolonged; by installing the temperature sensor, the temperature condition can be monitored more accurately and effectively in real time, and the specific temperature value can be known at the first time; and the copper pipe which is improved into a bent shape is used as a cooling air blowing structure, so that the service life is longer.

Description

Technical Field

[0001] This utility model belongs to the field of integrated busbar processing technology, and in particular relates to a hot melt mold. Background Technology

[0002] Integrated busbars, also known as wire harness board integration components, are made up of model acquisition components, plastic structural parts, copper and aluminum busbars, etc., which are connected into a whole through processes such as hot pressing or riveting to realize functions such as high voltage series and parallel connection of battery cells, battery temperature sampling, battery cell voltage sampling, and short circuit protection of sampling lines.

[0003] In the production of integrated busbars, a hot-melt mold process is typically used. Specifically, the rivet head is fixed to a heating plate, and the entire heating plate is heated to raise the temperature of the rivet head. Once the rivet head reaches the required temperature, it is pressed down to hot-melt the conductive sheet and the busbar. However, this structure suffers from high heating energy consumption, long demolding and cooling time, and easy deformation of the heating plate. To address this, CN221793863U discloses a hot-riveting mold for integrated busbars. This solution uses a heating rod that passes through a through hole in the rivet head fixing rod and directly contacts the rivet head. The rivet is fixed to the busbar positioning plate and corresponds to the rivet head. When the mold is closed... The rivet and the air nozzle of the air blower are aligned with the rivet head to form a hot melt shaping cavity. However, the improved solution still has the following problems: (1) The rivet head fixing rod is directly installed on the rivet head fixing plate, and the smoothness, high temperature resistance and lubrication are relatively poor when the compression spring is compressed; (2) It does not have a temperature detection function. During hot melt connection, it is impossible to accurately monitor the temperature of the rivet head in real time. Once it is overheated or loses temperature, it cannot be known immediately; (3) The position of the universal air nozzle connection joint is often deflected, and it is easy to leak air after long-term use. Therefore, in view of the above problems, this technical solution proposes a hot melt mold. Utility Model Content

[0004] This utility model provides a hot melt mold. By adding a high-temperature resistant, self-lubricating copper sleeve, the compression and sliding of the telescopic guide post and the forming melting head are made smoother, thus improving service life. By installing a temperature sensor on the side of the forming melting head, the temperature can be monitored more accurately and in real time, allowing for immediate knowledge of the specific temperature value. By replacing the original universal air nozzle with a snap-fit ​​fitting and a bent copper tube as the cooling air blowing structure, air leakage is reduced, and the service life is extended. In summary, the problems in the background technology are solved.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model discloses a hot melt mold, comprising at least one set of hot melt components mounted on a melting head mounting plate, and a product fixing fixture located below the hot melt components and connected by a product hot melt inner support. The hot melt components include a forming melting head with a hot melt cavity at the bottom, a heating rod inserted into the hot melt cavity at the end, a telescopic guide post sleeved outside the heating rod, and a pre-compression rod with a pre-compression block at the bottom; a compression spring for buffering is sleeved outside the telescopic guide post, and the top of the forming melting head and the pre-compression block are both provided with a stepped surface formed by a boss;

[0007] The melting head mounting plate is equipped with a lower cooling copper pipe connector via a cooling air pipe connector. The cooling air pipe connector is a quick-connect type air pipe connector. The bottom of the lower cooling copper pipe connector is sealed and snapped with a bent cooling copper pipe. The air outlet of the cooling copper pipe is directly facing the hot melt cavity.

[0008] The forming head and the bottom of the telescopic guide post are fixed together by threads; a fixing screw for pressing the heating rod and a temperature sensor for real-time detection of the forming head temperature are installed on the upper part of the forming head. The fixing screw is screwed in from one side of the forming head and presses against the side of the heating rod. The temperature sensor is threaded into a pre-set threaded hole on the other side of the forming head.

[0009] The telescopic guide post is fitted with a wear-resistant and high-temperature resistant copper sleeve, which penetrates the fusion head mounting plate and is fixed by an adjusting nut at the top.

[0010] Furthermore, the cooling copper pipe and the preload rod are arranged on both sides of the copper sleeve.

[0011] Furthermore, the cooling gas pipe connector is threaded into a threaded hole on the upper surface of the fusion head mounting plate, and the cooling copper pipe connector is threaded into a threaded hole on the lower surface of the fusion head mounting plate; the two threaded holes are concentric.

[0012] Furthermore, the cooling copper pipe is installed in the cooling copper pipe joint with an airtight thread, and a sealing ring or sealing gasket is provided at the installation position.

[0013] Furthermore, the top of the compression spring is fixedly connected to the bottom of the melting head mounting plate, and the bottom of the compression spring is fixedly connected to the stepped surface of the top of the molding melting head.

[0014] Furthermore, a preload spring is sleeved on the outside of the preload rod, with the top of the preload spring fixedly connected to the bottom of the melting head mounting plate and the bottom of the preload spring fixedly connected to the top of the preload block.

[0015] Furthermore, the product's hot-melt internal support is a bolt structure, which connects to the product's fixing fixture.

[0016] Furthermore, the head of the pre-compression block is made of Teflon material.

[0017] Furthermore, the riveting head of the hot-melt cavity is a cross-shaped bidirectional air passage.

[0018] The present invention has the following advantages over the prior art:

[0019] (1) By adding a high-temperature resistant copper sleeve with self-lubricating effect, the compression and sliding of the telescopic guide post and the forming melting head are smoother, thus improving the service life.

[0020] (2) By installing a temperature sensor on the side of the forming melting head, the temperature can be monitored more accurately and in real time, and the specific temperature value can be known immediately.

[0021] (3) By changing the original universal nozzle to a snap-fit ​​fitting and a bent copper tube as the cooling air blowing structure, it is not easy to leak air and has a longer service life.

[0022] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a hot melt mold according to the present invention;

[0025] Figure 2 for Figure 1 A schematic diagram of the structure from the perspective of A;

[0026] Figure 3 A diagram showing the position and structural relationship between a single set of hot melt components and product fixing fixtures;

[0027] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1-Fusion head mounting plate, 2-Product fixing fixture, 21-Product hot melt inner support, 3-Cooling copper pipe, 31-Lower cooling copper pipe connector, 32-Cooling air pipe connector, 4-Heating rod, 41-Telescopic guide post, 42-Forming fusion head, 43-Hot melt cavity, 44-Compression spring, 45-Temperature sensor, 46-Adjusting nut, 47-Fixing screw, 48-Copper sleeve, 5-Preload rod, 51-Preload block, 52-Preload spring. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be understood that the terms "below", "bottom", "inner", "outer", "one side", "the other side", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Please see Figure 1-4 As shown, a hot melt mold of this utility model includes at least one set of hot melt components mounted on a melting head mounting plate 1, and a product fixing fixture 2 located below the hot melt components and connected by a product hot melt inner support 21. The hot melt components include a forming melting head 42 with a hot melt cavity 43 at the bottom, a heating rod 4 with its end inserted into the hot melt cavity 43, a telescopic guide post 41 sleeved outside the heating rod 4, and a pre-pressure rod 5 with a pre-pressure block 51 at the bottom; a compression spring 44 for buffering is sleeved outside the telescopic guide post 41, and the tops of the forming melting head 42 and the pre-pressure block 51 are both provided with stepped surfaces formed by bosses; the above structure is the same as the prior art in the background art, the difference being:

[0033] A lower cooling copper pipe connector 31 is installed on the fusion head mounting plate 1 via a cooling air pipe connector 32. The cooling air pipe connector 32 is a quick-connect air pipe connector, which has a larger flow rate than existing technologies and can greatly improve the cooling effect. The bottom of the lower cooling copper pipe connector 31 is sealed and snapped with a bent cooling copper pipe 3. The air outlet of the cooling copper pipe 3 is directly facing the hot melt cavity 43. The hot melt cavity 43 corresponds to the specific product fixing fixture, which is existing and its specific shape is not limited.

[0034] The forming head 42 and the bottom of the telescopic guide post 41 are fixed together by threads; a fixing screw 47 for pressing the heating rod 4 and a temperature sensor 45 for real-time detection of the temperature of the forming head 42 are installed on the upper side of the forming head 42. In this embodiment, the temperature sensor 45 is specifically a thermocouple. The fixing screw 47 is screwed into the side of the forming head 42 and presses against the side of the heating rod 4. The temperature sensor 45 is threaded into the pre-set threaded hole on the other side of the forming head 42.

[0035] The telescopic guide post 41 is fitted with a wear-resistant and high-temperature resistant copper sleeve 48, which passes through the fusion head mounting plate 1 and is fixed by the adjusting nut 46 at the top.

[0036] The cooling copper pipe 3 and the preload rod 5 are arranged on both sides of the copper sleeve 48.

[0037] The cooling air pipe connector 32 is threaded into the threaded hole on the upper surface of the fusion head mounting plate 1, and the cooling copper pipe connector 31 is threaded into the threaded hole on the lower surface of the fusion head mounting plate 1. The two threaded holes are concentric.

[0038] The cooling copper pipe 3 is installed in the cooling copper pipe joint 31 with an airtight thread, and a sealing ring or sealing gasket is provided at the installation position.

[0039] The compression spring 44 is fixedly connected at the top to the bottom of the melting head mounting plate 1, and the compression spring 44 is fixedly connected at the bottom to the stepped surface at the top of the forming melting head 42.

[0040] Among them, a preload spring 52 is sleeved on the outside of the preload rod 5. The top of the preload spring 52 is fixedly connected to the bottom of the melting head mounting plate 1, and the bottom of the preload spring 52 is fixedly connected to the top of the preload block 51.

[0041] Among them, the product hot-melt internal support 21 is a bolt structure, which is connected to the product fixing fixture 2.

[0042] The head of the pre-compression block is made of Teflon, which is more heat-resistant and will not damage the product when pressed compared to existing technologies.

[0043] Among them, the rivet head of the hot melt cavity 43 is a two-way air passage. Specifically, the air passage has been changed from no air passage to a cross shape with four air holes, which can quickly dissipate heat and greatly improve the cooling effect.

[0044] The working principle of this technical solution is as follows:

[0045] The equipment is powered on, and the product is placed on the product fixing fixture. The heating rod is powered on and heats up, reaching the set temperature through the temperature sensor. The equipment starts, driving the melting head mounting plate downward. The pre-compression block first contacts the product and is pressed down by the pre-compression spring (the pre-compression block is made of a high-temperature resistant material, such as graphite). The forming melting head contacts the product and begins to melt the protruding part of the product during the downward pressing process, filling the hot melt cavity. The forming melting head and the telescopic guide post are fixed together by threads. The compression spring can appropriately over-compress, and the internal support of the hot melt prevents the protruding part of the product from collapsing during the downward melting process. The equipment stops moving downward when it reaches the preset height value. Then, the cooling air pipe blows gas onto the forming melting head through the cooling copper pipe to cool the forming melting head and the product in the hot melt cavity, and to set the melted part of the forming cavity. Then the equipment moves upward. The forming melting head separates from the product first, and the pre-compression block continues to press down on the product. After reaching a certain height, the pre-compression block separates from the product, completing the hot melt process.

[0046] This technical solution improves service life by adding a high-temperature resistant, self-lubricating copper sleeve, which makes the compression and sliding of the telescopic guide post and the forming melting head smoother. By installing a temperature sensor on the side of the forming melting head, the temperature can be monitored more accurately and in real time, allowing for immediate knowledge of the specific temperature value. By replacing the original universal air nozzle with a snap-fit ​​fitting and a bent copper tube as the cooling air blowing structure, air leakage is reduced, and the service life is extended.

[0047] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A hot melting mold, comprising at least one set of hot melting components mounted on a melting head mounting plate (1), and a product fixing tool (2) connected by a product hot melting inner support (21) below the hot melting components, the hot melting components comprising a forming melting head (42) with a hot melting cavity (43) at the bottom, a heating rod (4) inserted into the hot melting cavity (43) at the end, a telescopic guide column (41) sleeved outside the heating rod (4), and a pre-pressing rod (5) with a pre-pressing block (51) at the bottom; a compression spring (44) for buffering is sleeved outside the telescopic guide column (41), and the top of the forming melting head (42) and the pre-pressing block (51) is provided with a stepped surface formed by a boss, characterized in that: the lower cooling copper pipe joint (31) is mounted on the melting head mounting plate (1) through a cooling air pipe joint (32), the cooling air pipe joint (32) is a quick plug-in air pipe joint, and the bottom of the lower cooling copper pipe joint (31) is sealingly connected with a bent cooling copper pipe (3), and the air outlet of the cooling copper pipe (3) is opposite to the hot melting cavity (43); the forming melting head (42) and the telescopic guide column (41) are integrally fixed at the bottom through threads, the forming melting head (42) is provided on the upper side with a fixing screw (47) for pressing the heating rod (4) and a temperature sensor (45) for detecting the temperature of the forming melting head (42) in real time, the fixing screw (47) is screwed into the side of the forming melting head (42) and presses the side of the heating rod (4), and the temperature sensor (45) is screw-mounted in a preset threaded hole in the other side of the forming melting head (42); the telescopic guide column (41) is sleeved outside with a copper sleeve (48) resistant to wear and high temperature, the copper sleeve (48) penetrates through the melting head mounting plate (1) and is fixed by an adjusting nut (46) at the top. The cooling copper pipe (3) and the pre-pressing rod (5) are arranged on both sides of the copper sleeve (48).

2. A hot runner mold according to claim 1, wherein The cooling air pipe joint (32) is screw-mounted in a threaded hole in the upper surface of the melting head mounting plate (1), and the lower cooling copper pipe joint (31) is screw-mounted in a threaded hole in the lower surface of the melting head mounting plate (1), and the two threaded holes are concentric holes.

3. A hot runner mold in accordance with claim 1 wherein, The cooling copper pipe (3) is airtightly screw-mounted in the cooling copper pipe joint (31), and a sealing ring or a sealing gasket is arranged at the mounting position.

4. A hot runner mold in accordance with claim 2 wherein, The top of the compression spring (44) is fixedly connected to the bottom of the melting head mounting plate (1), and the bottom of the compression spring (44) is fixedly connected to the stepped surface at the top of the forming melting head (42).

5. A hot runner mold in accordance with claim 1 wherein, The pre-pressing rod (5) is sleeved outside with a pre-pressing spring (52), the top of the pre-pressing spring (52) is fixedly connected to the bottom of the melting head mounting plate (1), and the bottom of the pre-pressing spring (52) is fixedly connected to the top of the pre-pressing block (51).

6. A hot runner mold in accordance with claim 1 wherein, The product hot melting inner support (21) is a bolt structure and connects the product fixing tool (2).

7. A hot runner mold in accordance with claim 1 wherein, The head of the pre-pressing block (51) is made of Teflon material.

8. A hot runner mold in accordance with claim 1 wherein, The rivet head of the hot melting cavity (43) is a bidirectional airway.

9. A hot runner mold in accordance with claim 1 wherein, ​

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