Steel sleeve structure of injection molding machine

Abstract

The utility model discloses a steel sleeve structure of an injection molding machine, which is characterized by comprising a cylindrical sleeve body and further comprising a detection cavity, a steel sleeve, a steel sleeve and a steel sleeve, the temperature sensor is arranged in the detection cavity; the elastic block is fixed to the temperature sensor and extrudes the temperature sensor to be attached to the detection face of the detection cavity, and the detection face is the face close to the inner ring of the sleeve body; the temperature sensor is provided with an electric wire, an elastic sealing ring is fixed to the outer wall of the electric wire, the elastic sealing ring is inserted into the detection cavity to achieve sealing, the temperature in the steel sleeve is monitored to detect that a signal is sent to the alarm when the temperature value is too high, and an overheat alarm caused by the too high temperature of the steel sleeve is sent out so that lubricating oil can be added to the steel sleeve in time; and the situation that the guide rod and the steel sleeve are burnt is reduced.

Description

Technical Field

[0001] This utility model relates to a steel sleeve structure, and more specifically, to a steel sleeve structure for an injection molding machine. Background Technology

[0002] The steel sleeve of an injection molding machine is one of the core components of the injection system. The steel sleeve is installed on the machine base and is used for the guide rod, allowing the machine base to move along the guide rod.

[0003] During long-term use of injection molding machines, users may forget to add lubricating oil to the steel sleeve. The lack of lubricating oil between the guide rod and the steel sleeve leads to increased friction temperature during operation. Overheating of the guide rod and the steel sleeve due to friction can cause the metal surfaces to stick together or seize up, which is also known as burning out. Utility Model Content

[0004] The purpose of this invention is to provide a steel sleeve structure for an injection molding machine, which uses temperature monitoring inside the steel sleeve to detect excessively high temperatures and send an alarm signal to the alarm device to detect overheating caused by excessively high steel sleeve temperature. This allows for timely addition of lubricating oil to the steel sleeve, reducing the occurrence of guide rod and steel sleeve burning out.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A steel sleeve structure for an injection molding machine includes a cylindrical sleeve body and a detection cavity extending downward from the end of the sleeve body; a temperature sensor placed inside the detection cavity; an elastic block fixed to the temperature sensor, the elastic block pressing the temperature sensor to fit against the detection surface of the detection cavity, the detection surface being the side closest to the inner ring of the sleeve body; the temperature sensor is provided with a wire, the outer wall of which is fixed with an elastic sealing ring, the elastic sealing ring being inserted into the detection cavity to achieve a seal.

[0007] Preferably, the elastic block is a sponge block.

[0008] Preferably, an annular groove is provided at the end of the sleeve, the opening of the detection chamber is located in the annular groove, and the wire is located in the annular groove.

[0009] Preferably, the sleeve body is provided with a cover ring that covers the annular groove, the cover ring is provided with a through hole for screw insertion, and the side of the cover ring facing the annular groove is provided with a wire groove for the power supply line to extend outward.

[0010] Preferably, the cover plate is provided with a positioning ring embedded in an annular groove.

[0011] Preferably, the cover plate is provided with positioning posts, and the annular groove is provided with positioning holes for the positioning posts to be inserted.

[0012] Preferably, there are multiple detection chambers.

[0013] Preferably, there are three detection chambers, which are arranged at equal intervals along the circumference of the sleeve.

[0014] Preferably, the detection positions of the three detection chambers are located at both ends and the middle of the sleeve, respectively.

[0015] Preferably, the outer wall of the sleeve is provided with an oil delivery groove, and the oil delivery groove is provided with a graphite block.

[0016] In summary, this utility model has at least one of the following beneficial effects:

[0017] (1) The temperature sensor detects the internal temperature of the sleeve. If the friction temperature between the guide rod and the sleeve is too high, the temperature sensor detects the temperature of the sleeve and sends an overheating signal to the external control unit. The control unit then sends an alarm signal to the alarm device. This allows for timely detection of overheating inside the steel sleeve, reducing the occurrence of the steel sleeve burning out.

[0018] (2) The elastic block exerts a squeezing force on the temperature sensor, which enables the temperature sensor to effectively and stably fit the detection surface, thereby improving the detection accuracy.

[0019] (3) The elastic sealing ring seals the detection chamber into an isolated cavity, reducing the negative impact of external foreign objects, hot air flow, oil and other substances on the temperature sensor and improving detection accuracy.

[0020] (4) Using graphite blocks improves the lubrication performance of the oil, resulting in better lubrication. Attached Figure Description

[0021] Figure 1 This is an exploded view of the sleeve, cover ring, and temperature sensor in the embodiment;

[0022] Figure 2 This is a schematic diagram of the lower surface structure of the cover ring in the embodiment;

[0023] Figure 3 This is a longitudinal sectional view of the sleeve and cover ring after assembly in the embodiment;

[0024] Figure 4 yes Figure 3 Enlarged view of part A in the image;

[0025] Figure 5 This is an exploded view of the three temperature sensors and the sleeve in the embodiment;

[0026] Figure 6 This is a schematic diagram showing the positions of the three detection chambers by unfolding the cylindrical sleeve into a rectangle in the embodiment.

[0027] Figure 7 This is a schematic diagram of the sliding seat of the injection molding machine mounted on the steel sleeve in the embodiment;

[0028] Figure 8 This is a schematic diagram illustrating the principle of the temperature sensor triggering the alarm in the embodiment.

[0029] In the picture:

[0030] 1. Sleeve body;

[0031] 2. Detection cavity; 21. Detection surface;

[0032] 31. Temperature sensor; 32. Elastic block; 33. Wire; 34. Elastic sealing ring;

[0033] 4. Cover ring; 41. Perforation; 42. Wire channel;

[0034] 51. Annular groove; 52. Positioning ring;

[0035] 61. Positioning pin; 62. Positioning hole;

[0036] 71. Oil tank; 72. Graphite block;

[0037] 81. Sliding seat; 82. Screw; 83. Oil nozzle; 84. Guide rod;

[0038] 91. Control module; 92. Alarm light. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to the accompanying drawings.

[0040] Example 1: A steel sleeve structure for an injection molding machine, referring to... Figure 1 It includes a sleeve 1, which is made of stainless steel and is cylindrical.

[0041] The outer wall of the sleeve 1 is provided with an oil delivery groove 71, which includes a vertical groove and an annular groove. The vertical groove and the annular groove are connected to each other, and the lubricating oil flows in the oil delivery groove 71. A graphite block 72 is provided in the annular groove of the oil delivery groove 71. The purpose of the graphite block 72 is to input lubricating oil into the inner wall of the sleeve 1.

[0042] The vertical groove of the oil tank 71 is provided with a detection chamber 2, the wall of which is made of stainless steel; the detection chamber 2 is opened downward from the end of the sleeve 1, and the opening of the detection chamber 2 is set upward.

[0043] The detection chamber 2 is equipped with a temperature sensor 31, which is a resistance sensor, such as a PT100 temperature sensor 31.

[0044] The temperature sensor 31 is shaped like a rectangular block. An elastic block 32, which is made of sponge, is glued to the back of the temperature sensor 31. The sponge is relatively soft and easy to compress. When the temperature sensor 31 is inserted into the detection cavity 2, the sponge is compressed and deformed by the side of the detection cavity 2, which pushes the detection surface of the temperature sensor 31 to adhere to the detection surface 21. This allows the temperature sensor 31 to quickly sense the temperature change of the sleeve 1.

[0045] The inspection surface 21 is the side closest to the inner ring of the sleeve body 1. Figure 1 It can be seen that the side facing the center of the sleeve 1 is closer to the center of the sleeve 1 than the other sides of the detection cavity 2;

[0046] The temperature sensor 31 is equipped with a wire 33, and an elastic sealing ring 34 is fixed to the outer wall of the wire 33. The elastic sealing ring 34 is inserted into the detection cavity 2 to achieve a seal. The elastic sealing ring 34 is a rubber ring, and the inner ring of the elastic sealing ring 34 and the wire 33 are heat-fused to achieve a seal and fixation.

[0047] The outer ring shape of the elastic sealing ring 34 is adapted to the opening of the detection chamber 2, so the elastic sealing ring 34 is inserted into the opening of the detection chamber 2 to seal the opening of the detection chamber 2.

[0048] The installation process of temperature sensor 31 is as follows;

[0049] The detection chamber 2 is a rectangular cavity with an opening at the top. The temperature sensor 31 is inserted from the opening and into the bottom of the cavity, and then the elastic sealing ring 34 seals the opening.

[0050] The end of the sleeve 1 is provided with an annular groove 51, which is a circular groove; the opening of the detection cavity 2 is located in the annular groove 51, and the part of the wire 33 extending out of the cavity is located in the annular groove 51. The annular groove 51 serves as a wire receiving groove.

[0051] Reference Figure 1 and Figure 2 The sleeve 1 is provided with a cover ring 4 that covers the annular groove 51. The cover ring 4 is pressed against the end of the sleeve 1 and plays a limiting role in the sleeve 1.

[0052] The cover ring 4 is provided with a through hole 41 for inserting a screw 82. The through hole 41 is used for the screw 82 to pass through and fix the cover ring 4 to the base of the injection molding machine.

[0053] The cover plate is provided with a positioning ring 52 embedded in the annular groove 51. The positioning ring 52 is a raised ring. The positioning ring 52 is used to position the embedded annular groove 51 and plays the role of positioning the cover plate and the sleeve 1.

[0054] Reference Figure 3 and Figure 4The cover ring 4 has a wire channel 42 on the side facing the annular groove 51, through which the power supply line 33 extends outward. The wire channel 42 is connected to the annular groove 51, so the wire 33 in the annular groove 51 can extend outward through the wire channel 42 and be connected to the external control components.

[0055] The cover plate is provided with a positioning post 61, and the annular groove 51 is provided with a positioning hole 62 for the positioning post 61 to be inserted. The positioning function of the positioning post 61 and the positioning hole 62 further enhances the positioning function of the two during installation.

[0056] Example 2, a steel sleeve structure for an injection molding machine, differs from Example 1 in that, see below. Figures 5-7 There are three detection cavities 2, which are evenly spaced along the circumference of the sleeve 1. The depths of the three detection cavities 2 are different, and the depths of the three cavities increase sequentially. Therefore, the detection positions of the three cavities are located at both ends and the middle of the sleeve 1, respectively. In this method, "both ends" and "middle" refer to their relative positions.

[0057] This design allows for temperature detection of the sleeve 1 at different depth positions, resulting in higher detection accuracy.

[0058] Reference Figures 7-8 In actual injection molding machine applications, the sliding seat 81 of the injection molding machine will have a mounting hole, into which the sleeve 1 is inserted. Then, the cover ring 4 is fixed on the surface of the machine base by screws 82, and the cover ring 4 limits and fixes the sleeve 1. After that, the guide rod 84 is inserted into the sleeve 1, so that the sliding seat 81 moves along the guide rod 84 under the drive of power components such as cylinders. The side of the sliding seat 81 will have an oil injection terminal to add lubricating oil to the sleeve 1.

[0059] The wire 33 on the sleeve 1 is connected to the control cabinet of the injection molding machine. The wire 33 is electrically connected to the control module 91 on the control cabinet. The control module 91 can be a PLC controller. The control module 91 is connected to an external alarm light 92.

[0060] When the temperature sensor 31 detects a value greater than the set value of the control module 91, the control module 91 will send a signal to the alarm light 92, and the alarm light 92 will sound an alarm.

[0061] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A steel sleeve structure for an injection molding machine, comprising a cylindrical sleeve (1), characterized in that, it further comprises... include: The detection cavity (2) is opened downward from the end of the sleeve (1); A temperature sensor (31) is placed inside the detection chamber (2); An elastic block (32) is fixed to the temperature sensor (31). The elastic block (32) squeezes the temperature sensor (31) so that it fits against the detection surface (21) of the detection cavity (2). The detection surface (21) is the side close to the inner ring of the sleeve (1). The temperature sensor (31) is equipped with a wire (33), and an elastic sealing ring (34) is fixed on the outer wall of the wire (33). The elastic sealing ring (34) is inserted into the detection cavity (2) to achieve sealing.

2. The steel sleeve structure of the injection molding machine according to claim 1, characterized in that: The elastic block (32) is a sponge block.

3. The steel sleeve structure of the injection molding machine according to claim 1, characterized in that: The end of the sleeve (1) is provided with an annular groove (51), the opening of the detection cavity (2) is located in the annular groove (51), and the wire (33) is located in the annular groove (51).

4. The steel sleeve structure of the injection molding machine according to claim 3, characterized in that: The sleeve (1) is provided with a cover ring (4) covering the annular groove (51), the cover ring (4) is provided with a through hole (41) for inserting screws (82), and the side of the cover ring (4) facing the annular groove (51) is provided with a wire groove (42) for the power supply line (33) to extend outward.

5. The steel sleeve structure of the injection molding machine according to claim 4, characterized in that: The cover plate is provided with a positioning ring (52) embedded in an annular groove (51).

6. The steel sleeve structure of the injection molding machine according to claim 4, characterized in that: The cover plate is provided with a positioning post (61), and the annular groove (51) is provided with a positioning hole (62) for the positioning post (61) to be inserted.

7. The steel sleeve structure of the injection molding machine according to claim 1, characterized in that: There are multiple detection chambers (2).

8. The steel sleeve structure of the injection molding machine according to claim 7, characterized in that: There are three detection cavities (2), which are arranged at equal intervals along the circumference of the sleeve (1).

9. The steel sleeve structure of the injection molding machine according to claim 8, characterized in that: The detection positions of the three detection chambers (2) are located at both ends and the middle of the sleeve (1), respectively.

10. The steel sleeve structure of the injection molding machine according to claim 1, characterized in that: The outer wall of the sleeve (1) is provided with an oil delivery groove (71), and a graphite block (72) is provided inside the oil delivery groove (71).

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