Pressure head structure and counterweight clamp

Abstract

The utility model relates to the technical field of clamps, and discloses a pressure head structure and a counterweight clamp, and the pressure head structure is applied to the counterweight clamp. Wherein the pressure head structure is used for pressing a workpiece. The pressing head structure comprises a balance weight piece, a pressing head and a fixing piece. The pressing head comprises a contact part and a connecting part, and the contact part is connected with the connecting part and is configured to abut against a workpiece. The fixing piece is connected to the balance weight piece, and the fixing piece and the balance weight piece abut against the two opposite sides of the connecting part respectively. The pressure head structure disclosed by the utility model has the effect of improving the connection stability of the pressure head.

Description

Technical Field

[0001] This application relates to the technical field of jigs, and more particularly, to a punch head structure and a counterweight jig. Background Art

[0002] When welding workpieces, a pressing block is usually used to press the workpiece to fix the workpiece and reduce the probability of defects such as void soldering and warping of the workpiece. The pressing block is generally made of a metal material. In some cases, the metal pressing block is prohibited from contacting the workpiece. Therefore, in this case, a plastic punch head needs to be bonded to the pressing block to abut against the workpiece through the plastic punch head. However, since the material of the plastic punch head is different from that of the pressing block, the deformation amounts during thermal expansion and contraction are different. After passing through the high-temperature reflow furnace multiple times, the bonded plastic punch head is likely to become loose, affecting normal use. Summary of the Utility Model

[0003] In view of this, this application provides a punch head structure to improve the connection stability of the punch head.

[0004] An embodiment of this application provides a punch head structure for pressing a workpiece. The punch head structure includes a counterweight, a punch head, and a fixing member. The punch head includes a contact portion and a connecting portion. The contact portion is connected to the connecting portion and is configured to abut against the workpiece. The fixing member is connected to the counterweight, and the fixing member and the counterweight respectively abut against opposite sides of the connecting portion.

[0005] In the above embodiment, the connecting portion is clamped by the fixing member and the counterweight respectively abutting against opposite sides of the connecting portion. Both the fixing member and the counterweight have a limiting effect on the connecting portion, so that the connecting portion will not be separated from the counterweight due to thermal expansion and contraction or passing through a high-temperature environment multiple times, thereby improving the connection stability between the contact portion and the counterweight, that is, improving the connection stability of the punch head.

[0006] In some embodiments of this application, the fixing member and the counterweight are detachably connected.

[0007] In the above embodiment, the fixing member and the counterweight are detachably connected, which is convenient for replacing the punch head and can also replace different specifications of counterweights according to needs.

[0008] In some embodiments of this application, the fixing member is provided with a connection hole and a relief hole. The relief hole communicates with the connection hole. The contact portion is inserted into the relief hole. The fixing member is provided with a stepped surface on the outer periphery at one end of the relief hole facing the connection hole. The counterweight is inserted into the connection hole, and the counterweight and the stepped surface respectively abut against opposite sides of the connecting portion.

[0009] In the above embodiment, when installing the pressure head, the contact part of the pressure head is inserted from the connection hole into the clearance hole, so that the connection part is inserted into the connection hole and the contact part protrudes from the clearance hole to the outside of the fixing part, and then the counterweight is inserted into the connection hole and the counterweight is connected to the fixing part, so that the counterweight abuts the connection part against the step surface, thereby fixing the connection part. The contact part is inserted into the clearance hole, and the inner wall of the clearance hole has a supporting and restraining effect on the contact part, which is conducive to improving the position accuracy of the contact part relative to the fixing part, thereby facilitating improving the accuracy of the abutment part abutting against the part to be pressed of the workpiece.

[0010] In some embodiments of the present application, the counterweight is provided with a connection hole, and the fixing member is inserted in the connection hole. The fixing member is provided with a clearance hole, the clearance hole is communicated with the connection hole, and the contact portion is inserted in the clearance hole. The fixing member is provided with a step surface at the periphery of one end of the clearance hole facing the connection hole, and the step surface and the counterweight are respectively abutted on opposite sides of the connection portion.

[0011] In the above embodiment, when installing the pressure head, the contact portion of the pressure head is inserted into the clearance hole, and the connecting portion is abutted against the step surface. At this time, the contact portion protrudes from the clearance hole to the outside of the fixing member, and then the end of the fixing member close to the connecting portion is inserted into the connecting hole, and the fixing member is connected to the counterweight member, so that the step surface of the fixing member abuts the connecting portion against the bottom wall of the connecting hole of the counterweight member to fix the connecting portion. The contact portion is inserted into the clearance hole, and the inner wall of the clearance hole has a supporting and restraining effect on the contact portion, which is conducive to improving the position accuracy of the contact portion relative to the fixing member, thereby facilitating improving the accuracy of the abutment between the abutment portion and the part to be pressed of the workpiece.

[0012] In some embodiments of the present application, the fixing member is provided with a positioning groove, the positioning groove is communicated with the clearance hole, and the connecting portion is inserted into the positioning groove. The inner wall of the positioning groove is provided with a step surface.

[0013] In the above embodiment, when the connecting portion is inserted into the positioning groove, the contact portion is aligned with the clearance hole. The positioning groove has a positioning and guiding function for the connecting portion, so that the contact portion is easily inserted into the clearance hole.

[0014] In some embodiments of the present application, the pressure head structure further includes an extension member, which is inserted into the positioning groove, and two ends of the extension member are respectively abutted against the connecting portion and the counterweight member.

[0015] In the above embodiment, the extension piece is inserted into the positioning groove, and the counterweight piece is in contact with the connecting part through the extension piece. The depth of the positioning groove can be increased to shorten the length of the clearance hole, thereby shortening the length of the contact part to improve the bending resistance of the contact part, thereby reducing the possibility of bending, deformation or fracture of the contact part of the pressure head during transportation. At the same time, by using extension pieces of different lengths, pressure heads of different length specifications can be adapted.

[0016] In some embodiments of the present application, the connecting portion has a first side and a second side that are oppositely arranged. The fixing member abuts against the first side, and the counterweight member abuts against the second side. The counterweight member is provided with an abutting portion, and the fixing member is provided with a cooperating portion. The cooperating portion is connected to the abutting portion to restrict the minimum interval between the counterweight member and the fixing member in the direction pointing from the second side to the first side.

[0017] In the above embodiments, during the process of installing the fixing member on the counterweight member, the distance between the fixing member and the counterweight member in the direction pointing from the second side to the first side gradually decreases. After the cooperating portion is connected to the abutting portion, the fixing member moves relative to the counterweight member to the limit position, thereby restricting the continuous movement of the fixing member relative to the counterweight member, which is beneficial to reducing the probability of the connecting portion being excessively compressed and cracking or deforming.

[0018] In some embodiments of the present application, the connecting portion has a first side and a second side that are oppositely arranged. The fixing member abuts against the first side, and the counterweight member abuts against the second side. The connecting portion is elastic and configured to provide an elastic force to the fixing member, and the direction of the elastic force is in the direction pointing from the second side to the first side.

[0019] In the above embodiments, after the fixing member is installed in place, the connecting portion undergoes elastic deformation due to the pressing of the counterweight member. The elastic deformation can compensate for the manufacturing tolerances of the connecting portion, the counterweight member, or the fixing member, so that the fixing member and the counterweight member can stably fix the connecting portion, which is beneficial to reducing the probability that the indenter moves relative to the counterweight member and causes insufficient pressing of the workpiece. At the same time, the connecting portion has an elastic force acting on the fixing member, and the direction of the elastic force is in the direction pointing from the second side to the first side, so that both the counterweight member and the fixing member have a pre-tightening force acting on the connecting portion, thereby generating a relative acting force between the fixing member and the counterweight member, which is beneficial to increasing the static friction force at the connecting part between the fixing member and the counterweight member, and thus beneficial to increasing the stability of the fixing member staying fixed relative to the counterweight member.

[0020] In some embodiments of the present application, the connecting portion has a first side and a second side that are oppositely arranged. The fixing member abuts against the first side, and the counterweight member abuts against the second side. The counterweight member is provided with a first stop portion, and the fixing member is provided with a second stop portion. An interval is formed between the first stop portion and the second stop portion in the direction pointing from the second side to the first side. The first stop portion and the second stop portion are configured to respectively abut against opposite sides of the mounting member for mounting the indenter structure to restrict the position of the indenter structure relative to the mounting member.

[0021] In the above embodiments, after the indenter structure is installed on the mounting member, the first stop portion and the second stop portion cooperate with each other to restrict the movement range of the indenter structure relative to the mounting member, which is beneficial to reducing the possibility of the counterweight member falling off, thereby improving the stability of the connection between the indenter structure and the corresponding mounting member.

[0022] An embodiment of the present application further provides a counterweight fixture, which includes a mounting member and the above-mentioned pressing head structure, and the pressing head structure is arranged on the mounting member.

[0023] In the above embodiment, during use, after aligning the contact portion with the workpiece to be pressed and mounting the mounting member on the carrier holding the product, the contact portion abuts against the workpiece to press and fix the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the pressing head structure in an embodiment of the present application.

[0025] Figure 2 It is along Figure 1 Partial cross-sectional schematic view taken along line A-A in

[0026] Figure 3 It is a schematic diagram of the structure of the pressing head in an embodiment of the present application.

[0027] Figure 4 It is a partial cross-sectional schematic view of the pressing head structure in another embodiment of the present application.

[0028] Figure 5 It is a partial cross-sectional schematic view of the pressing head structure in yet another embodiment of the present application.

[0029] Figure 6 It is a schematic diagram of the overall structure of the counterweight fixture in an embodiment of the present application.

[0030] Figure 7 It is along Figure 6 Partial cross-sectional schematic view taken along line B-B in

[0031] Figure 8 It is Figure 7 Local enlarged view of part C in

[0032] MAIN ELEMENT SYMBOL DESCRIPTION

[0033] Pressing head structure 100

[0034] Counterweight 1

[0035] Connection main body 11

[0036] Abutting portion 12

[0037] Counterweight main body 13

[0038] First stop portion 14

[0039] Pressing head 2

[0040] Contact portion 21

[0041] Connection portion 22

[0042] The first side 221

[0043] The second side 222

[0044] Fixing member 3

[0045] Relieving hole 31

[0046] Step surface 32

[0047] Positioning groove 33

[0048] Fitting portion 34

[0049] Limiting groove 35

[0050] Second stop portion 36

[0051] Connection hole 4

[0052] Extension member 5

[0053] Counterweight fixture 10

[0054] Mounting member 200

[0055] Mounting hole 2001

[0056] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. Specific embodiments

[0057] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0059] The term "and / or" used herein includes any and all combinations of one or more of the related listed items. The terms "first", "second", etc. are used only for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0060] The embodiments of the present application provide a punch structure and a counterweight fixture, and the punch structure is applied to the counterweight fixture.

[0061] The indenter structure includes a counterweight, an indenter, and a fixing member. The indenter includes a contact portion and a connecting portion. The contact portion is connected to the connecting portion and is configured to abut against a workpiece. The fixing member is connected to the counterweight, and the fixing member and the counterweight respectively abut against opposite sides of the connecting portion. By clamping the connecting portion with the fixing member and the counterweight respectively abutting against opposite sides of the connecting portion, both the fixing member and the counterweight have a limiting effect on the connecting portion, so that the connecting portion will not be separated from the counterweight due to thermal expansion and contraction or passing through a high-temperature environment multiple times, thereby improving the connection stability between the contact portion and the counterweight, that is, improving the connection stability of the indenter.

[0062] The following will describe in detail some embodiments of the present application with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0063] Refer to Figure 1 and Figure 2 In an embodiment of the present application, an indenter structure 100 is provided. The indenter structure 100 includes a counterweight 1, an indenter 2, and a fixing member 3. The indenter 2 includes a contact portion 21 and a connecting portion 22. The contact portion 21 is connected to the connecting portion 22 and is configured to abut against a workpiece (not shown in the figure). The fixing member 3 is connected to the counterweight 1, and the fixing member 3 and the counterweight 1 respectively abut against opposite sides of the connecting portion 22.

[0064] Refer to Figure 2 and Figure 3 Specifically, in some embodiments, the connecting portion 22 has a first side 221 and a second side 222 that are oppositely arranged. The fixing member 3 abuts against the first side 221, and the counterweight 1 abuts against the second side 222.

[0065] By clamping the connecting portion 22 with the fixing member 3 and the counterweight 1 respectively abutting against opposite sides of the connecting portion 22, both the fixing member 3 and the counterweight 1 have a limiting effect on the connecting portion 22, so that the connecting portion 22 will not be separated from the counterweight 1 due to thermal expansion and contraction or passing through a high-temperature environment multiple times, thereby improving the connection stability between the contact portion 21 and the counterweight 1, that is, improving the connection stability of the indenter 2, and further facilitating improving the product yield of the process using the indenter structure 100. Exemplarily, in a welding process, this indenter structure 100 can reduce the probability of defects such as void soldering or warping of the workpiece after welding; in a hot melt adhesive bonding process, this indenter structure 100 can improve the firmness of the workpiece bonding and reduce the probability of the workpiece falling off; in a film sticking process, this indenter structure 100 can improve the flatness of the film and reduce the probability of defects such as film bulging or warping. This indenter structure 100 can also be applied to other processes that require pressing the workpiece.

[0066] In some embodiments, both the counterweight 1 and the fixing member 3 are cylindrical. In some embodiments, the counterweight 1 and / or the fixing member 3 are in a block shape or other shapes.

[0067] In some embodiments, the weight member 1 and the fixing member 3 are both made of copper. In some embodiments, the weight member 1 and / or the fixing member 3 are made of steel or other types of metal or non-metal materials, for example, ceramic materials.

[0068] In some embodiments, the connecting portion 22 and the contact portion 21 are both cylindrical, the diameter of the connecting portion 22 is larger than the diameter of the contact portion 21, the contact portion 21 is coaxial with the connecting portion 22, and the contact portion 21 is integrally connected with the first side 221 of the connecting portion 22. In some embodiments, the connecting portion 22 and / or the contact portion 21 are block-shaped or other shapes. In some embodiments, the contact portion 21 and the connecting portion 22 are fixedly connected to each other by bonding or welding or other forms. In some embodiments, the side wall of the connecting portion 22 located between the first side 221 and the second side 222 is connected to the contact portion 21.

[0069] In some embodiments, the material of the contact portion 21 and the material of the connecting portion 22 are both polytetrafluoroethylene plastic materials. In some embodiments, the material of the contact portion 21 and / or the material of the connecting portion 22 can also be polyimide or polyaryletherketone or other types of plastic materials or rubber materials.

[0070] In some embodiments, the weight of the counterweight 1 is greater than the weight of the pressing head 2 .

[0071] In some embodiments, the hardness of the counterweight 1 is greater than the hardness of the pressing head 2 .

[0072] Reference Figure 2 In some embodiments, the fixing member 3 is detachably connected to the counterweight 1, so as to facilitate the replacement of the pressure head 2, and the counterweight 1 of different specifications can be replaced as needed. Specifically, the counterweight 1 includes a connecting body 11, and the fixing member 3 is detachably connected to the connecting body 11.

[0073] Reference Figure 2 and Figure 3 In some embodiments, the fixing member 3 is provided with a connection hole 4 and a clearance hole 31. The clearance hole 31 is communicated with the connection hole 4. The contact portion 21 is inserted into the clearance hole 31, and the fixing member 3 is provided with a step surface 32 at the periphery of one end of the clearance hole 31 facing the connection hole 4, and the step surface 32 and the connection body 11 are respectively abutted on opposite sides of the connection portion 22. It can be understood that the connection body 11 abuts against the second side 222, and the step surface 32 abuts against the first side 221.

[0074] Reference Figure 2 In some embodiments, the connecting hole 4 is formed on the end wall of one end of the fixing member 3 , the clearance hole 31 is formed on the end wall of the fixing member 3 away from the connecting hole 4 , and the clearance hole 31 passes through the bottom wall of the connecting hole 4 .

[0075] Referring to Figure 2 , in some embodiments, the inner diameter of the relief hole 31 is smaller than the inner diameter of the connection hole 4, so that the fixing member 3 forms a stepped surface 32 on the bottom wall of the connection hole 4. It can be understood that the "inner diameter" here is not intended to limit the cross-section of the relief hole 31 or the connection hole 4 to be circular, but to illustrate that when the relief hole 31 penetrates the bottom wall of the connection hole 4, a part of the bottom wall of the connection hole 4 is retained to form the stepped surface 32. Exemplarily, the cross-sections of the connection hole 4 and the relief hole 31 can both be circular; alternatively, the cross-section of the connection hole 4 is circular, the cross-section of the relief hole 31 is square, and the length of the diagonal of the cross-section of the relief hole 31 is smaller than the inner diameter of the connection hole 4; alternatively, the cross-sections of the connection hole 4 and the relief hole 31 are both square, and the length of the diagonal of the cross-section of the relief hole 31 is smaller than the length of the diagonal of the cross-section of the connection hole 4; alternatively, the cross-section of the connection hole 4 and / or the relief hole 31 is other regular or irregular shapes, as long as a stepped surface 32 can be formed on the outer periphery of one end of the relief hole 31 facing the connection hole 4, which will not be elaborated here.

[0076] In some embodiments, internal threads are provided on the inner peripheral wall of the connection hole 4, external threads are provided on the peripheral wall of the connection main body 11, and the connection main body 11 is in threaded cooperation with the connection hole 4 to achieve detachable connection between the connection main body 11 and the fixing member 3. When installing the pressing head 2, place the pressing head 2 in the connection hole 4, and insert the contact part 21 of the pressing head 2 into the relief hole 31, so that the contact part 21 protrudes from the relief hole 31 to the outside of the fixing member 3, and then insert the connection main body 11 into the connection hole 4 and rotate the fixing member 3 relative to the connection main body 11, so that the connection main body 11 moves towards the relief hole 31 relative to the inner wall of the connection hole 4, so that the connection main body 11 abuts the connection part 22 against the stepped surface 32, thereby fixing the connection part 22. The contact part 21 is inserted into the relief hole 31, and the inner wall of the relief hole 31 has a supporting and restraining effect on the contact part 21, which is beneficial to improving the position accuracy of the contact part 21 relative to the fixing member 3, and thus beneficial to improving the accuracy of the abutment between the abutting part 12 and the part to be pressed of the workpiece. The stepped surface 32 is used to stop the connection part 22 so that the connection part 22 cannot pass through the relief hole 31.

[0077] In some embodiments, the connection main body 11 and the connection hole 4 are in interference fit to achieve detachable connection between the connection main body 11 and the fixing member 3. In some embodiments, the connection main body 11 and the fixing member 3 are detachably connected by means of snap connection or magnetic attraction or by means of structures such as screws.

[0078] Referring to Figure 4, in some embodiments, the fixing member 3 is provided with a positioning groove 33 which communicates with the relief hole 31. The connecting portion 22 is inserted into the positioning groove 33, and the bottom wall of the positioning groove 33 forms a stepped surface 32. Specifically, the positioning groove 33 is axially opened on the bottom wall of the connecting hole 4 and communicates with the relief hole 31. The inner diameter of the relief hole 31 is smaller than that of the positioning groove 33. It can be understood that the opening at one end of the relief hole 31 facing the connecting hole 4 is located on the bottom wall of the positioning groove 33 to form a stepped surface 32 for stopping the connecting portion 22 on the bottom wall of the positioning groove 33. The "inner diameter" here is not intended to limit the cross-section of the relief hole 31 or the positioning groove 33 to be circular. For details, reference can be made to the description of the relief hole 31 and the connecting hole 4 in the above embodiments.

[0079] Refer to Figure 4 , the depth dimension (L1 in the figure) of the positioning groove 33 along the axis of the connecting hole 4 is greater than the length dimension (L2 in the figure) of the contact portion 21 along the axis of the connecting hole 4. When installing the indenter 2, after the connecting portion 22 is inserted into the positioning groove 33 from the connecting hole 4, the peripheral wall of the connecting portion 22 fits with the inner peripheral wall of the positioning groove 33, and the contact portion 21 is aligned with the relief hole 31. The positioning groove 33 has a positioning and guiding effect on the connecting portion 22, so as to facilitate inserting the contact portion 21 into the relief hole 31.

[0080] Refer to Figure 4 , in some embodiments, the indenter structure 100 further includes an extension member 5 which is inserted into the positioning groove 33. The two ends of the extension member 5 are respectively in contact with the connecting portion 22 and the counterweight member 1.

[0081] The extension member 5 is inserted into the positioning groove 33, and the connecting body 11 is in contact with the connecting portion 22 through the extension member 5. The depth of the positioning groove 33 can be increased to shorten the length of the relief hole 31, so as to shorten the length of the contact portion 21, thereby improving the bending resistance of the contact portion 21, which is beneficial to reducing the possibility of bending deformation or fracture of the contact portion 21 of the indenter 2 during transportation.

[0082] In some embodiments, the extension member 5 is columnar, and one end of the extension member 5 away from the connecting portion 22 is integrally formed with the end wall of the connecting body 11 of the counterweight member 1. In some embodiments, one end of the extension member 5 away from the connecting portion 22 is connected to the connecting body 11 of the counterweight member 1 by means of bonding or welding or clamping or magnetic attraction or screw fit or the like or by means of structures such as screws.

[0083] In some embodiments, the extension member 5 and the counterweight member 1 are in a separated state. By using extension members 5 with different lengths, indenter 2 with different length specifications can be adapted.

[0084] Exemplarily, in some embodiments, the relief hole 31 may be formed in the circumferential wall of the fixing member 3 along the radial direction of the connecting hole 4, the positioning groove 33 is formed in the inner circumferential wall of the connecting hole 4, and the positioning groove 33 communicates with the relief hole 31 to provide communication between the relief hole 31 and the connecting hole 4. When installing the pressing head 2, after the connecting portion 22 is inserted into the positioning groove 33 and the contact portion 21 is inserted into the relief hole 31, when the connecting body 11 of the counterweight member 1 is screwed into the connecting hole 4, the circumferential wall of the connecting body 11 can abut against the side of the connecting portion 22 facing away from the contact portion 21, so that the connecting portion 22 is stably connected to the fixing member 3, thereby improving the stability of the fixing of the pressing head 2.

[0085] Exemplarily, in some embodiments, the relief hole 31 may be formed in the circumferential wall of the fixing member 3 along the radial direction of the connecting hole 4, and the positioning groove 33 is omitted, and the stepped surface 32 is located on the inner circumferential wall of the connecting hole 4. The longitudinal section of the connecting body 11 is substantially in a "T" shape, the end with a larger cross-section of the connecting body 11 is connected to the inner wall of the connecting hole 4, and the end with a smaller cross-section of the connecting body 11 is inserted into the side of the connecting portion 22 facing away from the relief hole 31, so that the connecting body 11 can keep the connecting portion 22 in abutment with the stepped surface 32 to fix the connecting portion 22.

[0086] Referring to Figures 2 to 4 , in some embodiments, the counterweight member 1 is provided with an abutting portion 12, and the fixing member 3 is provided with a cooperating portion 34. The cooperating portion 34 is configured to be connected to the abutting portion 12 to restrict the minimum interval between the counterweight member 1 and the fixing member 3 in the direction (X direction in the figure) from the second side 222 to the first side 221. It can be understood that the abutting portion 12 is in a sleeve shape, and the abutting portion 12 is integrally formed on the outer circumferential wall of the connecting body 11. A limiting groove 35 is formed in the end wall of the fixing member 3 facing the abutting portion 12, and the limiting groove 35 communicates with the connecting hole 4, and the limiting groove 35 is the cooperating portion 34. In some embodiments, the abutting portion 12 is in a ring shape or a block shape. In some embodiments, the abutting portion 12 can be connected to the connecting body 11 by means of welding, bonding, clamping, screw fitting, etc.

[0087] During the process of installing the fixing member 3 on the connecting body 11, the connecting body 11 moves toward the relief hole 31, and the distance between the fixing member 3 and the abutting portion 12 in the depth direction of the connecting hole 4 gradually decreases. When the cooperating portion 34 is connected to the abutting portion 12, that is, when the abutting portion 12 is inserted into the limiting groove 35 and the abutting portion 12 abuts against the bottom wall of the limiting groove 35, the fixing member 3 moves to the limit position relative to the counterweight member 1, thereby restricting the fixing member 3 from further moving relative to the counterweight body 13 of the counterweight member 1, which is beneficial to reducing the probability of the connecting portion 22 being excessively compressed and cracked or deformed. In the embodiment where the connecting body 11 is in screw fit with the connecting hole 4, the abutting portion 12 and the cooperating portion 34 cooperate to reduce the possibility of the fixing member 3 being excessively rotated and slipping.

[0088] For example, in some embodiments, the limiting groove 35 can be omitted, and the end wall of the fixing member 3 facing the abutting portion 12 is the matching portion 34. In the process of connecting the fixing member 3 to the counterweight 1, when the matching portion 34 and the abutting portion 12 abut against each other, the fixing member 3 moves to the limit position relative to the counterweight 1, thereby limiting the continued movement of the fixing member 3 relative to the connecting body 11 of the counterweight 1.

[0089] Reference Figure 4 In some embodiments, the connection body 11 is provided with a connection hole 4, and the fixing member 3 is inserted into the connection hole 4. Specifically, in some embodiments, the inner peripheral wall of the connection hole 4 is provided with an internal thread, the fixing member 3 is cylindrical, and the peripheral wall of one end of the fixing member 3 is provided with an external thread, and the end of the fixing member 3 with the external thread is threadedly matched with the connection hole 4, so that the fixing member 3 and the connection body 11 can be detachably connected. In some embodiments, the fixing member 3 can be interference-fitted with the connection hole 4 to achieve a detachable connection between the connection body 11 and the fixing member 3. In some embodiments, the connection body 11 can be detachably connected to the fixing member 3 by snapping or magnetic attraction or by a structure such as screws.

[0090] A positioning groove 33 is formed on the end wall of the fixing member 3 close to the connecting body 11, and a clearance hole 31 is formed on the end wall of the fixing member 3 away from the connecting body 11. The clearance hole 31 passes through the bottom wall of the positioning groove 33 so that the clearance hole 31 communicates with the connecting hole 4. At the same time, the fixing member 3 forms a step surface 32 on the bottom wall of the positioning groove 33. The pressure head structure 100 also includes an extension member 5, which is inserted into the positioning groove 33, and the two ends of the extension member 5 are respectively in contact with the connecting portion 22 and the counterweight 1.

[0091] When installing the pressure head 2, first place the pressure head 2 in the positioning groove 33, insert the connecting portion 22 in the positioning groove 33 and insert the contact portion 21 in the clearance hole 31, so that the connecting portion 22 abuts against the step surface 32, and the contact portion 21 protrudes from the clearance hole 31 to the outside of the fixing member 3. Then, insert the extension member 5 in the positioning groove 33, so that one end of the extension member 5 abuts against the end wall of the connecting portion 22 away from the clearance hole 31. Then, connect the fixing member 3 to the connecting body 11, so that the extension member 5 abuts against the bottom wall of the connecting hole 4, so that the bottom wall of the connecting hole 4 abuts against the connecting portion 22 through the extension member 5, so that the end wall of the connecting portion 22 away from the extension member 5 can be tightly abutted against the step surface 32 to fix the connecting portion 22, thereby fixing the contact portion 21. The contact portion 21 is inserted into the clearance hole 31, and the inner wall of the clearance hole 31 has a supporting and restraining effect on the contact portion 21, which is beneficial to improve the position accuracy of the contact portion 21 relative to the fixing member 3, thereby facilitating the improvement of the accuracy of the abutment between the abutment portion 12 and the part to be pressed of the workpiece.

[0092] Exemplarily, in some embodiments, the extension member 5 may be omitted, and the depth dimension of the positioning groove 33 is less than or equal to the dimension of the connecting portion 22 along the depth direction of the positioning groove 33. After the connecting portion 22 is inserted into the positioning groove 33, the end wall of the connecting portion 22 away from the contact portion 21 protrudes outside the positioning groove 33, or the end wall of the connecting portion 22 is flush with the end wall of the fixing member 3 where the positioning groove 33 is opened; after the fixing member 3 is connected to the connecting body 11, the bottom wall of the connecting hole 4 abuts against the connecting portion 22, so that the connecting portion 22 abuts tightly against the bottom wall of the positioning groove 33 to fix the connecting portion 22.

[0093] Further, in some embodiments, the positioning groove 33 may be omitted, the relief hole 31 penetrates through the end wall of the fixing member 3 close to the connecting body 11, and the end wall of the fixing member 3 facing the connecting hole 4 forms a stepped surface 32. When installing the pressing head 2, after the contact portion 21 is inserted into the relief hole 31 and the fixing member 3 is connected to the connecting body 11, the bottom wall of the connecting hole 4 and the stepped surface 32 respectively abut against the opposite sides of the connecting portion 22 to fix the connecting portion 22.

[0094] Further, in some embodiments, the relief hole 31 may be omitted, the counterweight member 1 further includes a counterweight body 13, and the counterweight body 13 is connected to the end wall of one end of the connecting body 11. The cross-sectional area of the counterweight body 13 is larger than the cross-sectional area of the connecting body 11. After the connecting body 11 is connected to the fixing member 3, the end wall of the counterweight body 13 facing the fixing member 3 abuts against the second side 222, and the end wall of the fixing member 3 facing the counterweight body 13 abuts against the first side 221 to clamp the connecting portion 22. In the embodiment where the relief hole 31 is omitted, the counterweight body 13 may also be connected to the peripheral wall of the connecting body 11.

[0095] Referring to Figure 5 , the counterweight member 1 is provided with an abutting portion 12, and the fixing member 3 is provided with a mating portion 34. It can be understood that the end wall of the connecting body 11 where the connecting hole 4 is opened is the abutting portion 12. The mating portion 34 is in a sleeve shape, and the mating portion 34 is integrally formed and connected to the outer peripheral wall of the fixing member 3. In some embodiments, the mating portion 34 and the fixing member 3 are connected by welding or bonding or snap-fitting or threaded cooperation or other means.

[0096] During the process of installing the fixing member 3 on the counterweight member 1, the fixing member 3 moves relative to the connecting body 11, and the distance between the fixing member 3 and the connecting body 11 in the direction from the second side 222 to the first side 221 gradually decreases. After the fitting portion 34 abuts against the abutting portion 12, the fixing member 3 moves relative to the connecting body 11 to the extreme position, thereby restricting the further movement of the fixing member 3 relative to the connecting body 11, which is beneficial to reducing the probability of the connecting portion 22 being excessively compressed and cracking or deforming. In the embodiment where the fixing member 3 is in threaded fit with the connecting hole 4, the abutting portion 12 is connected to the fitting portion 34, which can reduce the possibility of the fixing member 3 being excessively rotated and slipping threads.

[0097] Referring to Figures 2 to 5 , in some embodiments, the connecting portion 22 is elastic and configured to provide an elastic force to the fixing member 3, and the direction of the elastic force is along the direction from the second side 222 to the first side 221. It can be understood that the material of the connecting portion 22 is plastic or rubber, so that the connecting portion 22 has a certain elasticity. After the fixing member 3 is installed in place, the connecting portion 22 is squeezed and elastically deformed, so that the connecting portion 22 has an elastic force on the fixing member 3, which can make the side wall of the internal thread of the connecting hole 4 abut against the side wall of the external thread of the corresponding connecting body 11 or the side wall of the external thread of the fixing member 3, thereby increasing the static friction between the side wall of the internal thread and the side wall of the corresponding external thread, so as to increase the stability of the fixing member 3 relative to the connecting body 11 to remain fixed. At the same time, the elastic deformation of the connecting portion 22 can compensate for the manufacturing tolerances of the connecting portion 22, the counterweight member 1 or the fixing member 3, so that the fixing member 3 and the counterweight member 1 can stably fix the connecting portion 22, which is beneficial to reducing the probability that the pressing head 2 moves relative to the counterweight member 1 and causes the workpiece to be not pressed in place.

[0098] In some embodiments, the fixing member 3 and the counterweight member 1 are connected by a snap connection, and the elastic force can increase the static friction between the fixing member 3 and the counterweight member 1 at the connection part, so as to increase the stability of the connection between the fixing member 3 and the counterweight member 1, thereby improving the stability of fixing the connecting portion 22.

[0099] In some embodiments, the fixing member 3 and the counterweight member 1 are connected to each other by welding, magnetic attraction or other means or by structures such as screws.

[0100] Referring to Figure 6 and Figure 7 , an embodiment of the present application provides a counterweight fixture 10, which includes a mounting member 200 and the above-mentioned pressing head structure 100. The pressing head structure 100 is disposed on the mounting member 200, and the counterweight member 1 can move relative to the mounting member 200. Further, the number of the pressing head structures 100 is multiple. In some embodiments, the number of the pressing head structures 100 can also be set to one only according to needs.

[0101] In use, during the process of aligning the contact portion 21 with the workpiece to be pressed and installing the mounting member 200 on the carrier for clamping the product, the contact portion 21 abuts against the workpiece. At the same time, the contact portion 21 drives the counterweight member 1 to move relative to the mounting member 200 through the connecting portion 22, so that the weight of the counterweight member 1 acts on the workpiece through the contact portion 21, thereby enabling the contact portion 21 to press against the workpiece.

[0102] Referring to Figure 8 , in some embodiments, the mounting member 200 is in the shape of a plate, and the mounting holes 2001 are formed through the mounting member 200 along its thickness direction. The number of the mounting holes 2001 is multiple, and the mounting holes 2001 correspond to the pressing head structures 100 one by one. One end of each counterweight member 1 is inserted into the corresponding mounting hole 2001, and the counterweight member 1 can move relative to the inner wall of the mounting hole 2001 along the thickness direction of the mounting member 200. It can be understood that the connecting body 11 of the counterweight member 1 is inserted into the mounting hole 2001, and the end of the connecting body 11 far from the counterweight body 13 passes through the mounting hole 2001.

[0103] Referring to Figure 7 and Figure 8 , in some embodiments, the counterweight member 1 is provided with a first stop portion 14, and the fixing member 3 is provided with a second stop portion 36. An interval is formed between the first stop portion 14 and the second stop portion 36 along the direction from the second side 222 to the first side 221 (the X direction in the figure). The first stop portion 14 and the second stop portion 36 are configured to abut against the opposite sides of the mounting member 200 respectively to restrict the position of the pressing head structure 100 relative to the mounting member 200. It can be understood that the end wall of the counterweight body 13 of the counterweight member 1 facing the fixing member 3 is the first stop portion 14, and the end wall of the fixing member 3 facing the counterweight body 13 is the second stop portion 36. After the fixing member 3 is connected to the connecting body 11, the distance between the first stop portion 14 and the second stop portion 36 is greater than the thickness of the mounting member 200 to allow the counterweight body 13 of the counterweight member 1 to move relative to the mounting member 200. After the pressing head structure 100 is installed on the mounting member 200, the first stop portion 14 and the second stop portion 36 cooperate with each other to restrict the movement range of the pressing head structure 100 relative to the mounting member 200, which is beneficial to reducing the possibility of the counterweight member 1 falling off.

[0104] Exemplarily, in some embodiments, the first stop portion 14 is an annular structure or a block structure provided on the connecting body 11 of the counterweight member 1.

[0105] Exemplarily, in some embodiments, the second stop portion 36 is an annular structure or a block structure provided on the fixing member 3.

[0106] For example, in some embodiments, the first stopper 14 and the second stopper 36 may be omitted, and the counterweight 1 is connected to the mounting member 200 by an iron chain or a chain or rope structure made of other materials to reduce the possibility of the counterweight 1 being separated from the mounting member 200 and lost.

[0107] Reference Figure 8 In some embodiments, the assembling method of the weight fixture 10 is as follows:

[0108] When installing the pressure head 2, first insert the connecting body 11 of the counterweight 1 into the mounting hole 2001 of the mounting member 200, then place the pressure head 2 into the connecting hole 4, insert the contact portion 21 into the clearance hole 31, then screw the fixing member 3 onto the connecting body 11 and tighten the fixing member 3.

[0109] When in use, after the mounting member 200 is connected to a carrier (not shown) clamping a product, the contact portion 21 is located above the corresponding workpiece and abuts against the workpiece, and the first stop portion 14 is separated from the mounting member 200, so that the weight of the counterweight 1 can be applied to the workpiece through the contact portion 21 to achieve the effect of pressing and fixing the workpiece. The fixing member 3 and the counterweight 1 cooperate with each other to clamp the connecting portion 22, which is conducive to improving the stability of the connection between the connecting portion 22 and the counterweight 1 or the fixing member 3, thereby helping to reduce the possibility of the pressure head 2 falling off and causing the pressure head structure 100 to fail.

[0110] In addition, those skilled in the art should recognize that the above embodiments are only used to illustrate the present application and are not intended to be limiting of the present application. As long as they are within the spirit and scope of the present application, appropriate changes and modifications to the above embodiments are within the scope of the present application.

Claims

1. A pressing head structure for pressing a workpiece, characterized in that: The pressure head structure comprises: Counterweight; a pressing head including a contact portion and a connecting portion, the contact portion being connected to the connecting portion and configured to abut against the workpiece; and A fixing member is connected to the counterweight member, and the fixing member and the counterweight member are respectively abutted against two opposite sides of the connecting portion.

2. The pressure head structure according to claim 1, characterized in that: The fixing member is detachably connected to the counterweight member.

3. The pressure head structure according to claim 1, characterized in that: The fixing member is provided with a connecting hole and a clearance hole, the clearance hole is communicated with the connecting hole, the contact portion is inserted in the clearance hole, the fixing member is provided with a step surface on the outer periphery of one end of the clearance hole facing the connecting hole, the counterweight member is inserted in the connecting hole, and the counterweight member and the step surface are respectively abutted against opposite sides of the connecting portion.

4. The pressure head structure according to claim 1, characterized in that: The counterweight member is provided with a connecting hole, the fixing member is inserted in the connecting hole, the fixing member is provided with a clearance hole, and the clearance hole is communicated with the connecting hole; the contact portion is inserted in the clearance hole, and the fixing member is provided with a step surface on the outer periphery of one end of the clearance hole facing the connecting hole, and the step surface and the counterweight member are respectively abutted against the opposite sides of the connecting portion.

5. The pressure head structure according to claim 3 or 4, characterized in that: The fixing member is provided with a positioning groove, the positioning groove is communicated with the clearance hole, the connecting portion is inserted into the positioning groove, and the inner wall of the positioning groove is provided with the step surface.

6. The pressure head structure according to claim 5, characterized in that: The pressure head structure also includes an extension piece, which is inserted into the positioning groove, and two ends of the extension piece are respectively in contact with the connecting portion and the counterweight piece.

7. The pressure head structure according to claim 1, characterized in that: The connecting portion has a first side and a second side that are arranged opposite to each other, the fixing member abuts against the first side, and the counterweight member abuts against the second side; the counterweight member is provided with an abutting portion, and the fixing member is provided with a matching portion, and the matching portion is connected to the abutting portion to constrain the minimum interval between the counterweight member and the fixing member along the direction from the second side to the first side.

8. The pressure head structure according to claim 1, characterized in that: The connecting portion has a first side and a second side that are arranged opposite to each other, the fixing member abuts against the first side, and the counterweight member abuts against the second side; the connecting portion is elastic and is configured to provide an elastic force to the fixing member, and the direction of the elastic force is along a direction from the second side to the first side.

9. The pressure head structure according to claim 1, characterized in that: The connecting portion has a first side and a second side that are arranged opposite to each other, the fixing member abuts against the first side, and the counterweight member abuts against the second side; the counterweight member is provided with a first stop portion, and the fixing member is provided with a second stop portion, and a gap is formed between the first stop portion and the second stop portion along the direction from the second side to the first side, and the first stop portion and the second stop portion are configured to abut against opposite sides of the mounting member for mounting the pressure head structure, respectively, so as to constrain the position of the pressure head structure relative to the mounting member.

10. A counterweight fixture, characterized in that: The counterweight fixture comprises a mounting member and a pressure head structure according to any one of claims 1 to 9, wherein the pressure head structure is arranged on the mounting member.

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